diff options
| author | Thomas Schwinge <tschwinge@gnu.org> | 2006-01-22 15:54:41 +0000 |
|---|---|---|
| committer | Thomas Schwinge <tschwinge@gnu.org> | 2009-06-18 00:26:29 +0200 |
| commit | 4ad86505c480b2964548328a959c662e8aef5422 (patch) | |
| tree | 9cc9b8f80d561ae7d7451d95a26ff8c252e86504 | |
| parent | 656d6634de02862e837f3a7d80a49e9ca072398d (diff) | |
2006-01-22 Thomas Schwinge <tschwinge@gnu.org>
* configure, i386/configure, i386/linux/configure, linux/configure,
i386/linux/device-drivers.h.in: Regenerated.
* linux/src/drivers/net/ne2k-pci.c: Resolve conflicts.
2006-01-22 Guillem Jover <guillem@hadrons.org>
* i386/linux/configure.ac: Renamed winbond-840 driver to winbond_840.
Enable the starfire, intel_gige and natsemi network drivers. Remove
"CONFIG_" from cb_chim, starfire, sundance, winbond840, hamachi,
natsemi, myson803 and ns820 driver declarations. Replace INTER_GIGE
with INTEL_GIGE.
* linux/dev/drivers/net/Space.c: Add conditional probes for natsemi,
ns820, winbond840, hamachi, sundance, starfire, myson803 and intel-gige
drivers.
* linux/src/include/asm-i386/cache.h: New file from linux 2.2.26.
* linux/dev/include/linux/malloc.h: Include <asm/cache.h>.
* linux/src/drivers/net/ns820.c (netsami_drv_id): Renamed to ...
(ns820_drv_id): ... this. Fix all callers.
* linux/src/drivers/net/intel-gige.c
(skel_netdev_probe): Renamed to ...
(igige_probe): ... this.
* linux/dev/drivers/net/eepro100.c: Remove obsoleted file.
* linux/src/drivers/net/eepro100.c (pci_id_tbl): Add PCI ID's from
linux-2.6.14-rc4.
2006-01-22 Alfred M. Szmidt <ams@gnu.org>
* i386/linux/configure.ac: Added `pci-scan.o' to the network driver
class. (ns820, myson803, sundance, winbond-840, hamachi): New drivers.
* i386/linux/Makefile.in (linux-net-files): Added `cb_shim.c',
`hamachi.c', `intel-gige.c', `myson803.c', `natsemi.c', `ns820.c',
`starfire.c', `sundance.c', `winbond-840.c' and `pci-scan.c'.
* linux/dev/include/linux/modversions.h: New file.
* linux/src/drivers/net/cb_shim.c, linux/src/drivers/net/hamachi.c,
linux/src/drivers/net/intel-gige.c, linux/src/drivers/net/myson803.c,
linux/src/drivers/net/natsemi.c, linux/src/drivers/net/ns820.c,
linux/src/drivers/net/starfire.c, linux/src/drivers/net/sundance.c,
linux/src/drivers/net/winbond-840.c,
linux/src/drivers/net/kern_compat.h, linux/src/drivers/net/pci-scan.c,
linux/src/drivers/net/pci-scan.h: New files from netdrivers 3.5 package
(http://www.scyld.com/network).
* linux/src/drivers/net/3c59x.c, linux/src/drivers/net/eepro100.c,
linux/src/drivers/net/epic100.c, linux/src/drivers/net/ne2k-pci.c,
linux/src/drivers/net/rtl8139.c, linux/src/drivers/net/tulip.c,
linux/src/drivers/net/via-rhine.c, linux/src/drivers/net/yellowfin.c:
Updated files from netdrivers 3.5 (http://www.scyld.com/network).
33 files changed, 21067 insertions, 7992 deletions
@@ -1,5 +1,60 @@ 2006-01-22 Thomas Schwinge <tschwinge@gnu.org> + * configure, i386/configure, i386/linux/configure, linux/configure, + i386/linux/device-drivers.h.in: Regenerated. + + * linux/src/drivers/net/ne2k-pci.c: Resolve conflicts. + +2006-01-22 Guillem Jover <guillem@hadrons.org> + + * i386/linux/configure.ac: Renamed winbond-840 driver to winbond_840. + Enable the starfire, intel_gige and natsemi network drivers. Remove + "CONFIG_" from cb_chim, starfire, sundance, winbond840, hamachi, + natsemi, myson803 and ns820 driver declarations. Replace INTER_GIGE + with INTEL_GIGE. + * linux/dev/drivers/net/Space.c: Add conditional probes for natsemi, + ns820, winbond840, hamachi, sundance, starfire, myson803 and intel-gige + drivers. + + * linux/src/include/asm-i386/cache.h: New file from linux 2.2.26. + * linux/dev/include/linux/malloc.h: Include <asm/cache.h>. + + * linux/src/drivers/net/ns820.c (netsami_drv_id): Renamed to ... + (ns820_drv_id): ... this. Fix all callers. + * linux/src/drivers/net/intel-gige.c + (skel_netdev_probe): Renamed to ... + (igige_probe): ... this. + * linux/dev/drivers/net/eepro100.c: Remove obsoleted file. + * linux/src/drivers/net/eepro100.c (pci_id_tbl): Add PCI ID's from + linux-2.6.14-rc4. + +2006-01-22 Alfred M. Szmidt <ams@gnu.org> + + * i386/linux/configure.ac: Added `pci-scan.o' to the network driver + class. (ns820, myson803, sundance, winbond-840, hamachi): New drivers. + * i386/linux/Makefile.in (linux-net-files): Added `cb_shim.c', + `hamachi.c', `intel-gige.c', `myson803.c', `natsemi.c', `ns820.c', + `starfire.c', `sundance.c', `winbond-840.c' and `pci-scan.c'. + + * linux/dev/include/linux/modversions.h: New file. + + * linux/src/drivers/net/cb_shim.c, linux/src/drivers/net/hamachi.c, + linux/src/drivers/net/intel-gige.c, linux/src/drivers/net/myson803.c, + linux/src/drivers/net/natsemi.c, linux/src/drivers/net/ns820.c, + linux/src/drivers/net/starfire.c, linux/src/drivers/net/sundance.c, + linux/src/drivers/net/winbond-840.c, + linux/src/drivers/net/kern_compat.h, linux/src/drivers/net/pci-scan.c, + linux/src/drivers/net/pci-scan.h: New files from netdrivers 3.5 package + (http://www.scyld.com/network). + + * linux/src/drivers/net/3c59x.c, linux/src/drivers/net/eepro100.c, + linux/src/drivers/net/epic100.c, linux/src/drivers/net/ne2k-pci.c, + linux/src/drivers/net/rtl8139.c, linux/src/drivers/net/tulip.c, + linux/src/drivers/net/via-rhine.c, linux/src/drivers/net/yellowfin.c: + Updated files from netdrivers 3.5 (http://www.scyld.com/network). + +2006-01-22 Thomas Schwinge <tschwinge@gnu.org> + * linux/src/drivers/net/ne2k-pci.c (ne_block_input, ne_block_output): Fix previous patch. @@ -913,7 +913,7 @@ esac else echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2 fi - cd "$ac_popdir" + cd $ac_popdir done fi @@ -2089,7 +2089,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && - { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 (eval $ac_try) 2>&5 ac_status=$? @@ -2147,7 +2148,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && - { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 (eval $ac_try) 2>&5 ac_status=$? @@ -2263,7 +2265,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && - { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 (eval $ac_try) 2>&5 ac_status=$? @@ -2317,7 +2320,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && - { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 (eval $ac_try) 2>&5 ac_status=$? @@ -2362,7 +2366,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && - { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 (eval $ac_try) 2>&5 ac_status=$? @@ -2406,7 +2411,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && - { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 (eval $ac_try) 2>&5 ac_status=$? @@ -3545,6 +3551,11 @@ esac *) ac_INSTALL=$ac_top_builddir$INSTALL ;; esac + if test x"$ac_file" != x-; then + { echo "$as_me:$LINENO: creating $ac_file" >&5 +echo "$as_me: creating $ac_file" >&6;} + rm -f "$ac_file" + fi # Let's still pretend it is `configure' which instantiates (i.e., don't # use $as_me), people would be surprised to read: # /* config.h. Generated by config.status. */ @@ -3583,12 +3594,6 @@ echo "$as_me: error: cannot find input file: $f" >&2;} fi;; esac done` || { (exit 1); exit 1; } - - if test x"$ac_file" != x-; then - { echo "$as_me:$LINENO: creating $ac_file" >&5 -echo "$as_me: creating $ac_file" >&6;} - rm -f "$ac_file" - fi _ACEOF cat >>$CONFIG_STATUS <<_ACEOF sed "$ac_vpsub @@ -3959,7 +3964,7 @@ echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;} { (exit 1); exit 1; }; } fi - cd "$ac_popdir" + cd $ac_popdir done fi diff --git a/i386/configure b/i386/configure index 00a8f9d..fbaf7e3 100755 --- a/i386/configure +++ b/i386/configure @@ -876,7 +876,7 @@ esac else echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2 fi - cd "$ac_popdir" + cd $ac_popdir done fi @@ -2246,6 +2246,11 @@ esac + if test x"$ac_file" != x-; then + { echo "$as_me:$LINENO: creating $ac_file" >&5 +echo "$as_me: creating $ac_file" >&6;} + rm -f "$ac_file" + fi # Let's still pretend it is `configure' which instantiates (i.e., don't # use $as_me), people would be surprised to read: # /* config.h. Generated by config.status. */ @@ -2284,12 +2289,6 @@ echo "$as_me: error: cannot find input file: $f" >&2;} fi;; esac done` || { (exit 1); exit 1; } - - if test x"$ac_file" != x-; then - { echo "$as_me:$LINENO: creating $ac_file" >&5 -echo "$as_me: creating $ac_file" >&6;} - rm -f "$ac_file" - fi _ACEOF cat >>$CONFIG_STATUS <<_ACEOF sed "$ac_vpsub @@ -2521,7 +2520,7 @@ echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;} { (exit 1); exit 1; }; } fi - cd "$ac_popdir" + cd $ac_popdir done fi diff --git a/i386/linux/Makefile.in b/i386/linux/Makefile.in index b0494d9..ee02d86 100644 --- a/i386/linux/Makefile.in +++ b/i386/linux/Makefile.in @@ -1,5 +1,5 @@ # Makefile for Linux device drivers and the glue codes. -# Copyright 1998, 1999 Free Software Foundation, Inc. +# Copyright 1998, 1999, 2006 Free Software Foundation, Inc. # # Permission to use, copy, modify and distribute this software and its # documentation is hereby granted, provided that both the copyright @@ -68,7 +68,12 @@ linux-net-files = auto_irq.c 3c501.c 3c503.c 3c505.c 3c507.c 3c509.c \ eexpress.c epic100.c eth16i.c ewrk3.c fmv18x.c hp-plus.c hp.c hp100.c \ lance.c ne.c ne2k-pci.c net_init.c ni52.c ni65.c pcnet32.c rtl8139.c \ seeq8005.c sk_g16.c smc-ultra.c smc-ultra32.c tlan.c tulip.c \ - via-rhine.c wavelan.c wd.c yellowfin.c znet.c net.c + via-rhine.c wavelan.c wd.c yellowfin.c znet.c \ + cb_shim.c hamachi.c intel-gige.c myson803.c natsemi.c ns820.c \ + starfire.c sundance.c winbond-840.c \ + pci-scan.c \ + net.c + vpath %.c $(linuxsrcdir)/dev/drivers/net vpath %.c $(linuxsrcdir)/dev/net/core vpath %.c $(linuxsrcdir)/src/drivers/net diff --git a/i386/linux/configure b/i386/linux/configure index 0925037..dc3db67 100755 --- a/i386/linux/configure +++ b/i386/linux/configure @@ -910,6 +910,22 @@ Optional Features: --enable-gdth enable driver alias gdth for gdth --enable-gdth enable driver gdth --enable-flashpoint enable SCSI flashpoint [default=no] + --enable-starfire enable driver alias starfire for starfire + --enable-starfire enable driver starfire + --enable-sundance enable driver alias sundance for sundance + --enable-sundance enable driver sundance + --enable-winbond-840 enable driver alias winbond-840 for winbond_840 + --enable-winbond_840 enable driver winbond_840 + --enable-hamachi enable driver alias hamachi for hamachi + --enable-hamachi enable driver hamachi + --enable-intel-gige enable driver alias intel-gige for intel_gige + --enable-intel_gige enable driver intel_gige + --enable-natsemi enable driver alias natsemi for natsemi + --enable-natsemi enable driver natsemi + --enable-myson803 enable driver alias myson803 for myson803 + --enable-myson803 enable driver myson803 + --enable-ns820 enable driver alias ns820 for ns820 + --enable-ns820 enable driver ns820 --enable-ne2000 enable driver ne2000 --enable-el2 enable driver el2 --enable-el3 enable driver el3 @@ -1081,7 +1097,7 @@ esac else echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2 fi - cd "$ac_popdir" + cd $ac_popdir done fi @@ -2260,7 +2276,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && - { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 (eval $ac_try) 2>&5 ac_status=$? @@ -2318,7 +2335,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && - { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 (eval $ac_try) 2>&5 ac_status=$? @@ -2434,7 +2452,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && - { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 (eval $ac_try) 2>&5 ac_status=$? @@ -2488,7 +2507,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && - { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 (eval $ac_try) 2>&5 ac_status=$? @@ -2533,7 +2553,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && - { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 (eval $ac_try) 2>&5 ac_status=$? @@ -2577,7 +2598,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 cat conftest.err >&5 echo "$as_me:$LINENO: \$? = $ac_status" >&5 (exit $ac_status); } && - { ac_try='test -z "$ac_c_werror_flag" || test ! -s conftest.err' + { ac_try='test -z "$ac_c_werror_flag" + || test ! -s conftest.err' { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5 (eval $ac_try) 2>&5 ac_status=$? @@ -3085,7 +3107,7 @@ driver_class_scsi_files=" \ driver_class_net_option=CONFIG_INET driver_class_net_files=" \ - auto_irq.o net.o Space.o dev.o net_init.o" + auto_irq.o net.o Space.o dev.o net_init.o pci-scan.o" @@ -4111,6 +4133,280 @@ fi; + + +# Checking for alias starfire +# Check whether --enable-starfire or --disable-starfire was given. +if test "${enable_starfire+set}" = set; then + enableval="$enable_starfire" + enable_starfire="$enable_starfire" + +fi; + +# Checking for device driver option starfire +# Check whether --enable-starfire or --disable-starfire was given. +if test "${enable_starfire+set}" = set; then + enableval="$enable_starfire" + +if test "x$enableval" != xno; then + +cat >>confdefs.h <<\_ACEOF +#define CONFIG_STARFIRE 1 +_ACEOF + +device_drivers="$device_drivers starfire.o" +if test "${driver_class_net_selected+set}" != set; then + driver_class_net_selected=yes + cat >>confdefs.h <<_ACEOF +#define $driver_class_net_option 1 +_ACEOF + + device_drivers="$device_drivers $driver_class_net_files" +fi +fi + +fi; + + + +# Checking for alias sundance +# Check whether --enable-sundance or --disable-sundance was given. +if test "${enable_sundance+set}" = set; then + enableval="$enable_sundance" + enable_sundance="$enable_sundance" + +fi; + +# Checking for device driver option sundance +# Check whether --enable-sundance or --disable-sundance was given. +if test "${enable_sundance+set}" = set; then + enableval="$enable_sundance" + +if test "x$enableval" != xno; then + +cat >>confdefs.h <<\_ACEOF +#define CONFIG_SUNDANCE 1 +_ACEOF + +device_drivers="$device_drivers sundance.o" +if test "${driver_class_net_selected+set}" != set; then + driver_class_net_selected=yes + cat >>confdefs.h <<_ACEOF +#define $driver_class_net_option 1 +_ACEOF + + device_drivers="$device_drivers $driver_class_net_files" +fi +fi + +fi; + + + +# Checking for alias winbond-840 +# Check whether --enable-winbond-840 or --disable-winbond-840 was given. +if test "${enable_winbond_840+set}" = set; then + enableval="$enable_winbond_840" + enable_winbond_840="$enable_winbond-840" + +fi; + +# Checking for device driver option winbond_840 +# Check whether --enable-winbond_840 or --disable-winbond_840 was given. +if test "${enable_winbond_840+set}" = set; then + enableval="$enable_winbond_840" + +if test "x$enableval" != xno; then + +cat >>confdefs.h <<\_ACEOF +#define CONFIG_WINBOND840 1 +_ACEOF + +device_drivers="$device_drivers winbond-840.o" +if test "${driver_class_net_selected+set}" != set; then + driver_class_net_selected=yes + cat >>confdefs.h <<_ACEOF +#define $driver_class_net_option 1 +_ACEOF + + device_drivers="$device_drivers $driver_class_net_files" +fi +fi + +fi; + + + +# Checking for alias hamachi +# Check whether --enable-hamachi or --disable-hamachi was given. +if test "${enable_hamachi+set}" = set; then + enableval="$enable_hamachi" + enable_hamachi="$enable_hamachi" + +fi; + +# Checking for device driver option hamachi +# Check whether --enable-hamachi or --disable-hamachi was given. +if test "${enable_hamachi+set}" = set; then + enableval="$enable_hamachi" + +if test "x$enableval" != xno; then + +cat >>confdefs.h <<\_ACEOF +#define CONFIG_HAMACHI 1 +_ACEOF + +device_drivers="$device_drivers hamachi.o" +if test "${driver_class_net_selected+set}" != set; then + driver_class_net_selected=yes + cat >>confdefs.h <<_ACEOF +#define $driver_class_net_option 1 +_ACEOF + + device_drivers="$device_drivers $driver_class_net_files" +fi +fi + +fi; + + + +# Checking for alias intel-gige +# Check whether --enable-intel-gige or --disable-intel-gige was given. +if test "${enable_intel_gige+set}" = set; then + enableval="$enable_intel_gige" + enable_intel_gige="$enable_intel-gige" + +fi; + +# Checking for device driver option intel_gige +# Check whether --enable-intel_gige or --disable-intel_gige was given. +if test "${enable_intel_gige+set}" = set; then + enableval="$enable_intel_gige" + +if test "x$enableval" != xno; then + +cat >>confdefs.h <<\_ACEOF +#define CONFIG_INTEL_GIGE 1 +_ACEOF + +device_drivers="$device_drivers intel-gige.o" +if test "${driver_class_net_selected+set}" != set; then + driver_class_net_selected=yes + cat >>confdefs.h <<_ACEOF +#define $driver_class_net_option 1 +_ACEOF + + device_drivers="$device_drivers $driver_class_net_files" +fi +fi + +fi; + + + +# Checking for alias natsemi +# Check whether --enable-natsemi or --disable-natsemi was given. +if test "${enable_natsemi+set}" = set; then + enableval="$enable_natsemi" + enable_natsemi="$enable_natsemi" + +fi; + +# Checking for device driver option natsemi +# Check whether --enable-natsemi or --disable-natsemi was given. +if test "${enable_natsemi+set}" = set; then + enableval="$enable_natsemi" + +if test "x$enableval" != xno; then + +cat >>confdefs.h <<\_ACEOF +#define CONFIG_NATSEMI 1 +_ACEOF + +device_drivers="$device_drivers natsemi.o" +if test "${driver_class_net_selected+set}" != set; then + driver_class_net_selected=yes + cat >>confdefs.h <<_ACEOF +#define $driver_class_net_option 1 +_ACEOF + + device_drivers="$device_drivers $driver_class_net_files" +fi +fi + +fi; + + + +# Checking for alias myson803 +# Check whether --enable-myson803 or --disable-myson803 was given. +if test "${enable_myson803+set}" = set; then + enableval="$enable_myson803" + enable_myson803="$enable_myson803" + +fi; + +# Checking for device driver option myson803 +# Check whether --enable-myson803 or --disable-myson803 was given. +if test "${enable_myson803+set}" = set; then + enableval="$enable_myson803" + +if test "x$enableval" != xno; then + +cat >>confdefs.h <<\_ACEOF +#define CONFIG_MYSON803 1 +_ACEOF + +device_drivers="$device_drivers myson803.o" +if test "${driver_class_net_selected+set}" != set; then + driver_class_net_selected=yes + cat >>confdefs.h <<_ACEOF +#define $driver_class_net_option 1 +_ACEOF + + device_drivers="$device_drivers $driver_class_net_files" +fi +fi + +fi; + + + +# Checking for alias ns820 +# Check whether --enable-ns820 or --disable-ns820 was given. +if test "${enable_ns820+set}" = set; then + enableval="$enable_ns820" + enable_ns820="$enable_ns820" + +fi; + +# Checking for device driver option ns820 +# Check whether --enable-ns820 or --disable-ns820 was given. +if test "${enable_ns820+set}" = set; then + enableval="$enable_ns820" + +if test "x$enableval" != xno; then + +cat >>confdefs.h <<\_ACEOF +#define CONFIG_NS820 1 +_ACEOF + +device_drivers="$device_drivers ns820.o" +if test "${driver_class_net_selected+set}" != set; then + driver_class_net_selected=yes + cat >>confdefs.h <<_ACEOF +#define $driver_class_net_option 1 +_ACEOF + + device_drivers="$device_drivers $driver_class_net_files" +fi +fi + +fi; + + + # Checking for device driver option ne2000 # Check whether --enable-ne2000 or --disable-ne2000 was given. if test "${enable_ne2000+set}" = set; then @@ -6302,6 +6598,11 @@ esac + if test x"$ac_file" != x-; then + { echo "$as_me:$LINENO: creating $ac_file" >&5 +echo "$as_me: creating $ac_file" >&6;} + rm -f "$ac_file" + fi # Let's still pretend it is `configure' which instantiates (i.e., don't # use $as_me), people would be surprised to read: # /* config.h. Generated by config.status. */ @@ -6340,12 +6641,6 @@ echo "$as_me: error: cannot find input file: $f" >&2;} fi;; esac done` || { (exit 1); exit 1; } - - if test x"$ac_file" != x-; then - { echo "$as_me:$LINENO: creating $ac_file" >&5 -echo "$as_me: creating $ac_file" >&6;} - rm -f "$ac_file" - fi _ACEOF cat >>$CONFIG_STATUS <<_ACEOF sed "$ac_vpsub diff --git a/i386/linux/configure.ac b/i386/linux/configure.ac index 7fca47c..caebed7 100644 --- a/i386/linux/configure.ac +++ b/i386/linux/configure.ac @@ -1,5 +1,5 @@ dnl Device driver options for i386 -dnl Copyright 1997, 1999, 2004 Free Software Foundation, Inc. +dnl Copyright 1997, 1999, 2004, 2006 Free Software Foundation, Inc. dnl Permission to use, copy, modify and distribute this software and its dnl documentation is hereby granted, provided that both the copyright @@ -108,7 +108,7 @@ AC_DRIVER_CLASS([scsi], [CONFIG_SCSI], [ \ sd_ioctl.o sr.o sr_ioctl.o]) AC_DRIVER_CLASS([net], [CONFIG_INET], [ \ - auto_irq.o net.o Space.o dev.o net_init.o]) + auto_irq.o net.o Space.o dev.o net_init.o pci-scan.o]) dnl Strictly speaking, we could have a `linux' option too, but it's dnl not possible to built a useful kernel without at least one Linux @@ -170,6 +170,20 @@ AC_ARG_ENABLE([flashpoint], dnl Ethernet controllers +dnl FIXME: Can't be enabled since it is a pcmcia driver, and we don't +dnl have that kind of fluff. +dnl +dnl linux_DRIVER([cb_shim], [CB_SHIM], [cb_shim], [net]) + +linux_DRIVER([starfire], [STARFIRE], [starfire], [net]) +linux_DRIVER([sundance], [SUNDANCE], [sundance], [net]) +linux_DRIVER([winbond_840], [WINBOND840], [winbond-840], [net]) +linux_DRIVER([hamachi], [HAMACHI], [hamachi], [net]) +linux_DRIVER([intel_gige], [INTEL_GIGE], [intel-gige], [net]) +linux_DRIVER([natsemi], [NATSEMI], [natsemi], [net]) +linux_DRIVER([myson803], [MYSON803], [myson803], [net]) +linux_DRIVER([ns820], [NS820], [ns820], [net]) + AC_DRIVER([ne2000], [CONFIG_NE2000], [ne.o 8390.o], [net]) AC_DRIVER([el2], [CONFIG_EL2], [3c503.o 8390.o], [net]) linux_DRIVER([el3], [EL3], [3c509], [net]) diff --git a/i386/linux/device-drivers.h.in b/i386/linux/device-drivers.h.in index b4cb1bf..f7c1250 100644 --- a/i386/linux/device-drivers.h.in +++ b/i386/linux/device-drivers.h.in @@ -75,6 +75,9 @@ /* fmv18x */ #undef CONFIG_FMV18X +/* hamachi */ +#undef CONFIG_HAMACHI + /* hp100 */ #undef CONFIG_HP100 @@ -87,6 +90,9 @@ /* Driver Class net */ #undef CONFIG_INET +/* intel_gige */ +#undef CONFIG_INTEL_GIGE + /* lance */ #undef CONFIG_LANCE @@ -102,6 +108,12 @@ /* 686 */ #undef CONFIG_M686 +/* myson803 */ +#undef CONFIG_MYSON803 + +/* natsemi */ +#undef CONFIG_NATSEMI + /* ne2000 */ #undef CONFIG_NE2000 @@ -114,6 +126,9 @@ /* ni65 */ #undef CONFIG_NI65 +/* ns820 */ +#undef CONFIG_NS820 + /* pcnet32 */ #undef CONFIG_PCNET32 @@ -216,6 +231,12 @@ /* skg16 */ #undef CONFIG_SK_G16 +/* starfire */ +#undef CONFIG_STARFIRE + +/* sundance */ +#undef CONFIG_SUNDANCE + /* tlan */ #undef CONFIG_TLAN @@ -237,6 +258,9 @@ /* wd80x3 */ #undef CONFIG_WD80x3 +/* winbond_840 */ +#undef CONFIG_WINBOND840 + /* yellowfin */ #undef CONFIG_YELLOWFIN diff --git a/linux/configure b/linux/configure index 7de054a..02e486c 100755 --- a/linux/configure +++ b/linux/configure @@ -874,7 +874,7 @@ esac else echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2 fi - cd "$ac_popdir" + cd $ac_popdir done fi @@ -2144,6 +2144,11 @@ esac + if test x"$ac_file" != x-; then + { echo "$as_me:$LINENO: creating $ac_file" >&5 +echo "$as_me: creating $ac_file" >&6;} + rm -f "$ac_file" + fi # Let's still pretend it is `configure' which instantiates (i.e., don't # use $as_me), people would be surprised to read: # /* config.h. Generated by config.status. */ @@ -2182,12 +2187,6 @@ echo "$as_me: error: cannot find input file: $f" >&2;} fi;; esac done` || { (exit 1); exit 1; } - - if test x"$ac_file" != x-; then - { echo "$as_me:$LINENO: creating $ac_file" >&5 -echo "$as_me: creating $ac_file" >&6;} - rm -f "$ac_file" - fi _ACEOF cat >>$CONFIG_STATUS <<_ACEOF sed "$ac_vpsub diff --git a/linux/dev/drivers/net/Space.c b/linux/dev/drivers/net/Space.c index 0fb25bd..db40d0c 100644 --- a/linux/dev/drivers/net/Space.c +++ b/linux/dev/drivers/net/Space.c @@ -62,6 +62,14 @@ extern int ewrk3_probe(struct device *); extern int de4x5_probe(struct device *); extern int el1_probe(struct device *); extern int via_rhine_probe(struct device *); +extern int natsemi_probe(struct device *); +extern int ns820_probe(struct device *); +extern int winbond840_probe(struct device *); +extern int hamachi_probe(struct device *); +extern int sundance_probe(struct device *); +extern int starfire_probe(struct device *); +extern int myson803_probe(struct device *); +extern int igige_probe(struct device *); #if defined(CONFIG_WAVELAN) extern int wavelan_probe(struct device *); #endif /* defined(CONFIG_WAVELAN) */ @@ -132,6 +140,30 @@ ethif_probe(struct device *dev) #ifdef CONFIG_VIA_RHINE && via_rhine_probe(dev) #endif +#ifdef CONFIG_NATSEMI + && natsemi_probe(dev) +#endif +#ifdef CONFIG_NS820 + && ns820_probe(dev) +#endif +#ifdef CONFIG_WINBOND840 + && winbond840_probe(dev) +#endif +#ifdef CONFIG_HAMACHI + && hamachi_probe(dev) +#endif +#ifdef CONFIG_SUNDANCE + && sundance_probe(dev) +#endif +#ifdef CONFIG_STARFIRE + && starfire_probe(dev) +#endif +#ifdef CONFIG_MYSON803 + && myson803_probe(dev) +#endif +#ifdef CONFIG_INTEL_GIGE + && igige_probe(dev) +#endif #if defined(CONFIG_DEC_ELCP) && tulip_probe(dev) #endif diff --git a/linux/dev/drivers/net/eepro100.c b/linux/dev/drivers/net/eepro100.c deleted file mode 100644 index 802e7a4..0000000 --- a/linux/dev/drivers/net/eepro100.c +++ /dev/null @@ -1,2284 +0,0 @@ -/* drivers/net/eepro100.c: An Intel i82557-559 Ethernet driver for Linux. */ -/* - NOTICE: this version of the driver is supposed to work with 2.2 kernels. - Written 1996-1999 by Donald Becker. - - This software may be used and distributed according to the terms - of the GNU Public License, incorporated herein by reference. - - This driver is for the Intel EtherExpress Pro100 (Speedo3) design. - It should work with all i82557/558/559 boards. - - To use as a module, use the compile-command at the end of the file. - - The author may be reached as becker@CESDIS.usra.edu, or C/O - Center of Excellence in Space Data and Information Sciences - Code 930.5, NASA Goddard Space Flight Center, Greenbelt MD 20771 - For updates see - http://cesdis.gsfc.nasa.gov/linux/drivers/eepro100.html - For installation instructions - http://cesdis.gsfc.nasa.gov/linux/misc/modules.html - There is a Majordomo mailing list based at - linux-eepro100@cesdis.gsfc.nasa.gov - - The driver also contains updates by different kernel developers. - This driver clone is maintained by Andrey V. Savochkin <saw@saw.sw.com.sg>. - Please use this email address and linux-kernel mailing list for bug reports. - - Modification history: - 2000 Mar 24 Dragan Stancevic <visitor@valinux.com> - Disabled FC and ER, to avoid lockups when when we get FCP interrupts. - 2000 May 27 Andrey Moruga <moruga@sw.com.sg> - Code duplication for 82559ER support was removed. - Accurate handling of all supported chips was implemented. - Some fixes in 2.3 clone of the driver were ported. - 2000 May 30 Dragan Stancevic <visitor@valinux.com> and - Andrey Moruga <moruga@sw.com.sg> - Honor PortReset timing specification. - 2000 Jul 25 Dragan Stancevic <visitor@valinux.com> - Changed to MMIO, resized FIFOs, resized rings, changed ISR timeout - Problem reported by: - Marc MERLIN <merlin@valinux.com> - 2000 Nov 15 Dragan Stancevic <visitor@valinux.com> - Changed command completion time and added debug info as to which - CMD timed out. Problem reported by: - "Ulrich Windl" <Ulrich.Windl@rz.uni-regensburg.de> -*/ - -#define USE_IO -static const char *version = -"eepro100.c:v1.09j-t 9/29/99 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/eepro100.html\n" -"eepro100.c: $Revision: 1.1 $ 2000/05/31 Modified by Andrey V. Savochkin <saw@saw.sw.com.sg> and others\n" -"eepro100.c: VA Linux custom, Dragan Stancevic <visitor@valinux.com> 2000/11/15\n"; - -/* A few user-configurable values that apply to all boards. - First set is undocumented and spelled per Intel recommendations. */ - -static int congenb = 0; /* Enable congestion control in the DP83840. */ -static int txfifo = 0; /* Tx FIFO threshold in 4 byte units, 0-15 */ -static int rxfifo = 0xF; /* Rx FIFO threshold, default 32 bytes. */ -/* Tx/Rx DMA burst length, 0-127, 0 == no preemption, tx==128 -> disabled. */ -static int txdmacount = 128; -static int rxdmacount = 0; - -/* Set the copy breakpoint for the copy-only-tiny-buffer Rx method. - Lower values use more memory, but are faster. */ -#if defined(__alpha__) || defined(__sparc__) -/* force copying of all packets to avoid unaligned accesses on Alpha */ -static int rx_copybreak = 1518; -#else -static int rx_copybreak = 200; -#endif - -/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ -static int max_interrupt_work = 200; - -/* Maximum number of multicast addresses to filter (vs. rx-all-multicast) */ -static int multicast_filter_limit = 64; - -/* 'options' is used to pass a transceiver override or full-duplex flag - e.g. "options=16" for FD, "options=32" for 100mbps-only. */ -static int full_duplex[] = {-1, -1, -1, -1, -1, -1, -1, -1}; -static int options[] = {-1, -1, -1, -1, -1, -1, -1, -1}; -#ifdef MODULE -static int debug = -1; /* The debug level */ -#endif - -/* A few values that may be tweaked. */ -/* The ring sizes should be a power of two for efficiency. */ -#define TX_RING_SIZE 64 -#define RX_RING_SIZE 64 -/* How much slots multicast filter setup may take. - Do not descrease without changing set_rx_mode() implementaion. */ -#define TX_MULTICAST_SIZE 2 -#define TX_MULTICAST_RESERV (TX_MULTICAST_SIZE*2) -/* Actual number of TX packets queued, must be - <= TX_RING_SIZE-TX_MULTICAST_RESERV. */ -#define TX_QUEUE_LIMIT (TX_RING_SIZE-TX_MULTICAST_RESERV) -/* Hysteresis marking queue as no longer full. */ -#define TX_QUEUE_UNFULL (TX_QUEUE_LIMIT-4) - -/* Operational parameters that usually are not changed. */ - -/* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT (2*HZ) -/* Size of an pre-allocated Rx buffer: <Ethernet MTU> + slack.*/ -#define PKT_BUF_SZ 1536 - -#if !defined(__OPTIMIZE__) || !defined(__KERNEL__) -#warning You must compile this file with the correct options! -#warning See the last lines of the source file. -#error You must compile this driver with "-O". -#endif - -#include <linux/version.h> -#include <linux/module.h> -#if defined(MODVERSIONS) -#include <linux/modversions.h> -#endif - -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/timer.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/malloc.h> -#include <linux/interrupt.h> -#include <linux/pci.h> -#include <linux/compatmac.h> -#include <asm/spinlock.h> -#include <asm/processor.h> -#include <asm/bitops.h> -#include <asm/io.h> -/* #include <asm/unaligned.h> */ -/* #include <asm/byteorder.h> */ -#define __LITTLE_ENDIAN -#include <asm/hardirq.h> - -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/delay.h> - -#if defined(MODULE) && (LINUX_VERSION_CODE > 0x20115) -MODULE_AUTHOR("Maintainer: Andrey V. Savochkin <saw@saw.sw.com.sg>"); -MODULE_DESCRIPTION("Intel i82557/i82558 PCI EtherExpressPro driver"); -MODULE_PARM(debug, "i"); -MODULE_PARM(options, "1-" __MODULE_STRING(8) "i"); -MODULE_PARM(full_duplex, "1-" __MODULE_STRING(8) "i"); -MODULE_PARM(congenb, "i"); -MODULE_PARM(txfifo, "i"); -MODULE_PARM(rxfifo, "i"); -MODULE_PARM(txdmacount, "i"); -MODULE_PARM(rxdmacount, "i"); -MODULE_PARM(rx_copybreak, "i"); -MODULE_PARM(max_interrupt_work, "i"); -MODULE_PARM(multicast_filter_limit, "i"); -#endif - -#if (LINUX_VERSION_CODE >= 0x20100) -static char kernel_version[] = UTS_RELEASE; -#endif - -#if LINUX_VERSION_CODE < 0x20123 -#define hard_smp_processor_id() smp_processor_id() -#define test_and_set_bit(val, addr) set_bit(val, addr) -#define le16_to_cpu(val) (val) -#define le32_to_cpu(val) (val) -#define cpu_to_le32(val) (val) -#define cpu_to_le16(val) (val) -#endif -#if LINUX_VERSION_CODE <= 0x20139 -#define net_device_stats enet_statistics -#else -#define NETSTATS_VER2 -#endif -#if LINUX_VERSION_CODE < 0x20155 -/* Grrrr, the PCI code changed, but did not consider CardBus... */ -#include <linux/bios32.h> -#define PCI_SUPPORT_VER1 -#else -#define PCI_SUPPORT_VER2 -#endif -#if LINUX_VERSION_CODE < 0x20159 -#define dev_free_skb(skb) dev_kfree_skb(skb, FREE_WRITE); -#else -#define dev_free_skb(skb) dev_kfree_skb(skb); -#endif -#if ! defined(CAP_NET_ADMIN) -#define capable(CAP_XXX) (suser()) -#endif - -#define RUN_AT(x) (jiffies + (x)) -/* Condensed bus+endian portability operations. */ -#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) -#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) - -#define net_device device -#define pci_base_address(p, n) (p)->base_address[n] - -#define netif_wake_queue(dev) do { \ - clear_bit(0, (void*)&dev->tbusy); \ - mark_bh(NET_BH); \ - } while(0) -#define netif_start_queue(dev) clear_bit(0, (void*)&dev->tbusy) -#define netif_stop_queue(dev) set_bit(0, (void*)&dev->tbusy) -#ifndef PCI_DEVICE_ID_INTEL_82559ER -#define PCI_DEVICE_ID_INTEL_82559ER 0x1209 -#endif -#ifndef PCI_DEVICE_ID_INTEL_ID1029 -#define PCI_DEVICE_ID_INTEL_ID1029 0x1029 -#endif -#ifndef PCI_DEVICE_ID_INTEL_ID1030 -#define PCI_DEVICE_ID_INTEL_ID1030 0x1030 -#endif -#ifndef PCI_DEVICE_ID_INTEL_ID2449 -#define PCI_DEVICE_ID_INTEL_ID2449 0x2449 -#endif - -/* The total I/O port extent of the board. - The registers beyond 0x18 only exist on the i82558. */ -#define SPEEDO3_TOTAL_SIZE 0x20 - -int speedo_debug = 1; - -/* - Theory of Operation - -I. Board Compatibility - -This device driver is designed for the Intel i82557 "Speedo3" chip, Intel's -single-chip fast Ethernet controller for PCI, as used on the Intel -EtherExpress Pro 100 adapter. - -II. Board-specific settings - -PCI bus devices are configured by the system at boot time, so no jumpers -need to be set on the board. The system BIOS should be set to assign the -PCI INTA signal to an otherwise unused system IRQ line. While it's -possible to share PCI interrupt lines, it negatively impacts performance and -only recent kernels support it. - -III. Driver operation - -IIIA. General -The Speedo3 is very similar to other Intel network chips, that is to say -"apparently designed on a different planet". This chips retains the complex -Rx and Tx descriptors and multiple buffers pointers as previous chips, but -also has simplified Tx and Rx buffer modes. This driver uses the "flexible" -Tx mode, but in a simplified lower-overhead manner: it associates only a -single buffer descriptor with each frame descriptor. - -Despite the extra space overhead in each receive skbuff, the driver must use -the simplified Rx buffer mode to assure that only a single data buffer is -associated with each RxFD. The driver implements this by reserving space -for the Rx descriptor at the head of each Rx skbuff. - -The Speedo-3 has receive and command unit base addresses that are added to -almost all descriptor pointers. The driver sets these to zero, so that all -pointer fields are absolute addresses. - -The System Control Block (SCB) of some previous Intel chips exists on the -chip in both PCI I/O and memory space. This driver uses the I/O space -registers, but might switch to memory mapped mode to better support non-x86 -processors. - -IIIB. Transmit structure - -The driver must use the complex Tx command+descriptor mode in order to -have a indirect pointer to the skbuff data section. Each Tx command block -(TxCB) is associated with two immediately appended Tx Buffer Descriptor -(TxBD). A fixed ring of these TxCB+TxBD pairs are kept as part of the -speedo_private data structure for each adapter instance. - -The newer i82558 explicitly supports this structure, and can read the two -TxBDs in the same PCI burst as the TxCB. - -This ring structure is used for all normal transmit packets, but the -transmit packet descriptors aren't long enough for most non-Tx commands such -as CmdConfigure. This is complicated by the possibility that the chip has -already loaded the link address in the previous descriptor. So for these -commands we convert the next free descriptor on the ring to a NoOp, and point -that descriptor's link to the complex command. - -An additional complexity of these non-transmit commands are that they may be -added asynchronous to the normal transmit queue, so we disable interrupts -whenever the Tx descriptor ring is manipulated. - -A notable aspect of these special configure commands is that they do -work with the normal Tx ring entry scavenge method. The Tx ring scavenge -is done at interrupt time using the 'dirty_tx' index, and checking for the -command-complete bit. While the setup frames may have the NoOp command on the -Tx ring marked as complete, but not have completed the setup command, this -is not a problem. The tx_ring entry can be still safely reused, as the -tx_skbuff[] entry is always empty for config_cmd and mc_setup frames. - -Commands may have bits set e.g. CmdSuspend in the command word to either -suspend or stop the transmit/command unit. This driver always flags the last -command with CmdSuspend, erases the CmdSuspend in the previous command, and -then issues a CU_RESUME. -Note: Watch out for the potential race condition here: imagine - erasing the previous suspend - the chip processes the previous command - the chip processes the final command, and suspends - doing the CU_RESUME - the chip processes the next-yet-valid post-final-command. -So blindly sending a CU_RESUME is only safe if we do it immediately after -after erasing the previous CmdSuspend, without the possibility of an -intervening delay. Thus the resume command is always within the -interrupts-disabled region. This is a timing dependence, but handling this -condition in a timing-independent way would considerably complicate the code. - -Note: In previous generation Intel chips, restarting the command unit was a -notoriously slow process. This is presumably no longer true. - -IIIC. Receive structure - -Because of the bus-master support on the Speedo3 this driver uses the new -SKBUFF_RX_COPYBREAK scheme, rather than a fixed intermediate receive buffer. -This scheme allocates full-sized skbuffs as receive buffers. The value -SKBUFF_RX_COPYBREAK is used as the copying breakpoint: it is chosen to -trade-off the memory wasted by passing the full-sized skbuff to the queue -layer for all frames vs. the copying cost of copying a frame to a -correctly-sized skbuff. - -For small frames the copying cost is negligible (esp. considering that we -are pre-loading the cache with immediately useful header information), so we -allocate a new, minimally-sized skbuff. For large frames the copying cost -is non-trivial, and the larger copy might flush the cache of useful data, so -we pass up the skbuff the packet was received into. - -IV. Notes - -Thanks to Steve Williams of Intel for arranging the non-disclosure agreement -that stated that I could disclose the information. But I still resent -having to sign an Intel NDA when I'm helping Intel sell their own product! - -*/ - -/* This table drives the PCI probe routines. */ -static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, - int pci_devfn, long ioaddr, - int chip_idx, int card_idx); - -#ifdef USE_IO -#define SPEEDO_IOTYPE PCI_USES_MASTER|PCI_USES_IO|PCI_ADDR1 -#define SPEEDO_SIZE 32 -#else -#define SPEEDO_IOTYPE PCI_USES_MASTER|PCI_USES_MEM|PCI_ADDR0 -#define SPEEDO_SIZE 0x1000 -#endif - -enum pci_flags_bit { - PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4, - PCI_ADDR0=0x10<<0, PCI_ADDR1=0x10<<1, PCI_ADDR2=0x10<<2, PCI_ADDR3=0x10<<3, -}; -struct pci_id_info { - const char *name; - u16 vendor_id, device_id; - int pci_index; -} static pci_tbl[] = { - { "Intel PCI EtherExpress Pro100 82557", - PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82557, - 0 - }, - { "Intel PCI EtherExpress Pro100 82559ER", - PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82559ER, - 0 - }, - { "Intel PCI EtherExpress Pro100 ID1029", - PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ID1029, - 0 - }, - { "Intel Corporation 82559 InBusiness 10/100", - PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ID1030, - 0 - }, - { "Intel PCI EtherExpress Pro100 82562EM", - PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ID2449, - 0 - }, - {0,} /* 0 terminated list. */ -}; - -static inline unsigned int io_inw(unsigned long port) -{ - return inw(port); -} -static inline void io_outw(unsigned int val, unsigned long port) -{ - outw(val, port); -} - -#ifndef USE_IO -#undef inb -#undef inw -#undef inl -#undef outb -#undef outw -#undef outl -#define inb readb -#define inw readw -#define inl readl -#define outb writeb -#define outw writew -#define outl writel -#endif - -/* How to wait for the command unit to accept a command. - Typically this takes 0 ticks. */ -static inline void wait_for_cmd_done(long cmd_ioaddr) -{ - int wait = 20000; - char cmd_reg1, cmd_reg2; - do ; - while((cmd_reg1 = inb(cmd_ioaddr)) && (--wait >= 0)); - - /* Last chance to change your mind --Dragan*/ - if (wait < 0){ - cmd_reg2 = inb(cmd_ioaddr); - if(cmd_reg2){ - printk(KERN_ALERT "eepro100: cmd_wait for(%#2.2x) timedout with(%#2.2x)!\n", - cmd_reg1, cmd_reg2); - - } - } - -} - -/* Offsets to the various registers. - All accesses need not be longword aligned. */ -enum speedo_offsets { - SCBStatus = 0, SCBCmd = 2, /* Rx/Command Unit command and status. */ - SCBPointer = 4, /* General purpose pointer. */ - SCBPort = 8, /* Misc. commands and operands. */ - SCBflash = 12, SCBeeprom = 14, /* EEPROM and flash memory control. */ - SCBCtrlMDI = 16, /* MDI interface control. */ - SCBEarlyRx = 20, /* Early receive byte count. */ -}; -/* Commands that can be put in a command list entry. */ -enum commands { - CmdNOp = 0, CmdIASetup = 0x10000, CmdConfigure = 0x20000, - CmdMulticastList = 0x30000, CmdTx = 0x40000, CmdTDR = 0x50000, - CmdDump = 0x60000, CmdDiagnose = 0x70000, - CmdSuspend = 0x40000000, /* Suspend after completion. */ - CmdIntr = 0x20000000, /* Interrupt after completion. */ - CmdTxFlex = 0x00080000, /* Use "Flexible mode" for CmdTx command. */ -}; -/* Clear CmdSuspend (1<<30) avoiding interference with the card access to the - status bits. Previous driver versions used separate 16 bit fields for - commands and statuses. --SAW - */ -#if defined(__LITTLE_ENDIAN) -#define clear_suspend(cmd) ((__u16 *)&(cmd)->cmd_status)[1] &= ~0x4000 -#elif defined(__BIG_ENDIAN) -#define clear_suspend(cmd) ((__u16 *)&(cmd)->cmd_status)[1] &= ~0x0040 -#else -#error Unsupported byteorder -#endif - -enum SCBCmdBits { - SCBMaskCmdDone=0x8000, SCBMaskRxDone=0x4000, SCBMaskCmdIdle=0x2000, - SCBMaskRxSuspend=0x1000, SCBMaskEarlyRx=0x0800, SCBMaskFlowCtl=0x0400, - SCBTriggerIntr=0x0200, SCBMaskAll=0x0100, - /* The rest are Rx and Tx commands. */ - CUStart=0x0010, CUResume=0x0020, CUStatsAddr=0x0040, CUShowStats=0x0050, - CUCmdBase=0x0060, /* CU Base address (set to zero) . */ - CUDumpStats=0x0070, /* Dump then reset stats counters. */ - RxStart=0x0001, RxResume=0x0002, RxAbort=0x0004, RxAddrLoad=0x0006, - RxResumeNoResources=0x0007, -}; - -enum SCBPort_cmds { - PortReset=0, PortSelfTest=1, PortPartialReset=2, PortDump=3, -}; - -/* The Speedo3 Rx and Tx frame/buffer descriptors. */ -struct descriptor { /* A generic descriptor. */ - s32 cmd_status; /* All command and status fields. */ - u32 link; /* struct descriptor * */ - unsigned char params[0]; -}; - -/* The Speedo3 Rx and Tx buffer descriptors. */ -struct RxFD { /* Receive frame descriptor. */ - s32 status; - u32 link; /* struct RxFD * */ - u32 rx_buf_addr; /* void * */ - u32 count; -}; - -/* Selected elements of the Tx/RxFD.status word. */ -enum RxFD_bits { - RxComplete=0x8000, RxOK=0x2000, - RxErrCRC=0x0800, RxErrAlign=0x0400, RxErrTooBig=0x0200, RxErrSymbol=0x0010, - RxEth2Type=0x0020, RxNoMatch=0x0004, RxNoIAMatch=0x0002, - TxUnderrun=0x1000, StatusComplete=0x8000, -}; - -struct TxFD { /* Transmit frame descriptor set. */ - s32 status; - u32 link; /* void * */ - u32 tx_desc_addr; /* Always points to the tx_buf_addr element. */ - s32 count; /* # of TBD (=1), Tx start thresh., etc. */ - /* This constitutes two "TBD" entries -- we only use one. */ - u32 tx_buf_addr0; /* void *, frame to be transmitted. */ - s32 tx_buf_size0; /* Length of Tx frame. */ - u32 tx_buf_addr1; /* void *, frame to be transmitted. */ - s32 tx_buf_size1; /* Length of Tx frame. */ -}; - -/* Multicast filter setting block. --SAW */ -struct speedo_mc_block { - struct speedo_mc_block *next; - unsigned int tx; - struct descriptor frame __attribute__ ((__aligned__(16))); -}; - -/* Elements of the dump_statistics block. This block must be lword aligned. */ -struct speedo_stats { - u32 tx_good_frames; - u32 tx_coll16_errs; - u32 tx_late_colls; - u32 tx_underruns; - u32 tx_lost_carrier; - u32 tx_deferred; - u32 tx_one_colls; - u32 tx_multi_colls; - u32 tx_total_colls; - u32 rx_good_frames; - u32 rx_crc_errs; - u32 rx_align_errs; - u32 rx_resource_errs; - u32 rx_overrun_errs; - u32 rx_colls_errs; - u32 rx_runt_errs; - u32 done_marker; -}; - -enum Rx_ring_state_bits { - RrNoMem=1, RrPostponed=2, RrNoResources=4, RrOOMReported=8, -}; - -/* Do not change the position (alignment) of the first few elements! - The later elements are grouped for cache locality. */ -struct speedo_private { - struct TxFD tx_ring[TX_RING_SIZE]; /* Commands (usually CmdTxPacket). */ - struct RxFD *rx_ringp[RX_RING_SIZE]; /* Rx descriptor, used as ring. */ - /* The addresses of a Tx/Rx-in-place packets/buffers. */ - struct sk_buff* tx_skbuff[TX_RING_SIZE]; - struct sk_buff* rx_skbuff[RX_RING_SIZE]; - struct descriptor *last_cmd; /* Last command sent. */ - unsigned int cur_tx, dirty_tx; /* The ring entries to be free()ed. */ - spinlock_t lock; /* Group with Tx control cache line. */ - u32 tx_threshold; /* The value for txdesc.count. */ - struct RxFD *last_rxf; /* Last command sent. */ - unsigned int cur_rx, dirty_rx; /* The next free ring entry */ - long last_rx_time; /* Last Rx, in jiffies, to handle Rx hang. */ - const char *product_name; - struct net_device *next_module; - void *priv_addr; /* Unaligned address for kfree */ - struct enet_statistics stats; - struct speedo_stats lstats; - int chip_id; - unsigned char pci_bus, pci_devfn, acpi_pwr; - struct timer_list timer; /* Media selection timer. */ - struct speedo_mc_block *mc_setup_head;/* Multicast setup frame list head. */ - struct speedo_mc_block *mc_setup_tail;/* Multicast setup frame list tail. */ - int in_interrupt; /* Word-aligned dev->interrupt */ - char rx_mode; /* Current PROMISC/ALLMULTI setting. */ - unsigned int tx_full:1; /* The Tx queue is full. */ - unsigned int full_duplex:1; /* Full-duplex operation requested. */ - unsigned int flow_ctrl:1; /* Use 802.3x flow control. */ - unsigned int rx_bug:1; /* Work around receiver hang errata. */ - unsigned int rx_bug10:1; /* Receiver might hang at 10mbps. */ - unsigned int rx_bug100:1; /* Receiver might hang at 100mbps. */ - unsigned char default_port:8; /* Last dev->if_port value. */ - unsigned char rx_ring_state; /* RX ring status flags. */ - unsigned short phy[2]; /* PHY media interfaces available. */ - unsigned short advertising; /* Current PHY advertised caps. */ - unsigned short partner; /* Link partner caps. */ -}; - -/* The parameters for a CmdConfigure operation. - There are so many options that it would be difficult to document each bit. - We mostly use the default or recommended settings. */ -const char i82557_config_cmd[22] = { - 22, 0x08, 0, 0, 0, 0, 0x32, 0x03, 1, /* 1=Use MII 0=Use AUI */ - 0, 0x2E, 0, 0x60, 0, - 0xf2, 0x48, 0, 0x40, 0xf2, 0x80, /* 0x40=Force full-duplex */ - 0x3f, 0x05, }; -const char i82558_config_cmd[22] = { - 22, 0x08, 0, 1, 0, 0, 0x22, 0x03, 1, /* 1=Use MII 0=Use AUI */ - 0, 0x2E, 0, 0x60, 0x08, 0x88, - 0x68, 0, 0x40, 0xf2, 0x84, /* Disable FC */ - 0x31, 0x05, }; - -/* PHY media interface chips. */ -static const char *phys[] = { - "None", "i82553-A/B", "i82553-C", "i82503", - "DP83840", "80c240", "80c24", "i82555", - "unknown-8", "unknown-9", "DP83840A", "unknown-11", - "unknown-12", "unknown-13", "unknown-14", "unknown-15", }; -enum phy_chips { NonSuchPhy=0, I82553AB, I82553C, I82503, DP83840, S80C240, - S80C24, I82555, DP83840A=10, }; -static const char is_mii[] = { 0, 1, 1, 0, 1, 1, 0, 1 }; -#define EE_READ_CMD (6) - -static int do_eeprom_cmd(long ioaddr, int cmd, int cmd_len); -static int mdio_read(long ioaddr, int phy_id, int location); -static int mdio_write(long ioaddr, int phy_id, int location, int value); -static int speedo_open(struct net_device *dev); -static void speedo_resume(struct net_device *dev); -static void speedo_timer(unsigned long data); -static void speedo_init_rx_ring(struct net_device *dev); -static void speedo_tx_timeout(struct net_device *dev); -static int speedo_start_xmit(struct sk_buff *skb, struct net_device *dev); -static void speedo_refill_rx_buffers(struct net_device *dev, int force); -static int speedo_rx(struct net_device *dev); -static void speedo_tx_buffer_gc(struct net_device *dev); -static void speedo_interrupt(int irq, void *dev_instance, struct pt_regs *regs); -static int speedo_close(struct net_device *dev); -static struct enet_statistics *speedo_get_stats(struct net_device *dev); -static int speedo_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); -static void set_rx_mode(struct net_device *dev); -static void speedo_show_state(struct net_device *dev); - - - -#ifdef honor_default_port -/* Optional driver feature to allow forcing the transceiver setting. - Not recommended. */ -static int mii_ctrl[8] = { 0x3300, 0x3100, 0x0000, 0x0100, - 0x2000, 0x2100, 0x0400, 0x3100}; -#endif - -/* A list of all installed Speedo devices, for removing the driver module. */ -static struct net_device *root_speedo_dev = NULL; - -int eepro100_init(void) -{ - int cards_found = 0; - int chip_idx; - struct pci_dev *pdev; - struct pci_dev rdev; pdev = &rdev; - - if (! pcibios_present()) - return cards_found; - - for (chip_idx = 0; pci_tbl[chip_idx].name; chip_idx++) { - for (; pci_tbl[chip_idx].pci_index < 8; pci_tbl[chip_idx].pci_index++) { - unsigned char pci_bus, pci_device_fn, pci_latency; - unsigned long pciaddr; - long ioaddr; - int irq; - - u16 pci_command, new_command; - - if (pcibios_find_device(pci_tbl[chip_idx].vendor_id, - pci_tbl[chip_idx].device_id, - pci_tbl[chip_idx].pci_index, &pci_bus, - &pci_device_fn)) - break; - { -#if defined(PCI_SUPPORT_VER2) - pdev = pci_find_slot(pci_bus, pci_device_fn); -#ifdef USE_IO - pciaddr = pci_base_address(pdev, 1); /* Use [0] to mem-map */ -#else - pciaddr = pci_base_address(pdev, 0); -#endif - irq = pdev->irq; -#else - u32 pci_ioaddr; - u8 pci_irq_line; -#ifdef USE_IO - pcibios_read_config_dword(pci_bus, pci_device_fn, - PCI_BASE_ADDRESS_1, &pci_ioaddr); -#else - pcibios_read_config_dword(pci_bus, pci_device_fn, - PCI_BASE_ADDRESS_0, &pci_ioaddr); -#endif - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_INTERRUPT_LINE, &pci_irq_line); - pciaddr = pci_ioaddr; - irq = pci_irq_line; - pdev->irq = irq; -#endif - } - /* Remove I/O space marker in bit 0. */ - if (pciaddr & 1) { - ioaddr = pciaddr & ~3UL; - if (check_region(ioaddr, 32)) - continue; - } else { -#ifdef __sparc__ - /* ioremap is hosed in 2.2.x on Sparc. */ - ioaddr = pciaddr & ~0xfUL; -#else - if ((ioaddr = (long)ioremap(pciaddr & ~0xfUL, 0x1000)) == 0) { - printk(KERN_INFO "Failed to map PCI address %#lx.\n", - pciaddr); - continue; - } -#endif - } - if (speedo_debug > 2) - printk("Found Intel i82557 PCI Speedo at I/O %#lx, IRQ %d.\n", - ioaddr, irq); - - /* Get and check the bus-master and latency values. */ - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, &pci_command); - new_command = pci_command | PCI_COMMAND_MASTER|PCI_COMMAND_IO; - if (pci_command != new_command) { - printk(KERN_INFO " The PCI BIOS has not enabled this" - " device! Updating PCI command %4.4x->%4.4x.\n", - pci_command, new_command); - pcibios_write_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, new_command); - } - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, &pci_latency); - if (pci_latency < 32) { - printk(" PCI latency timer (CFLT) is unreasonably low at %d." - " Setting to 32 clocks.\n", pci_latency); - pcibios_write_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, 32); - } else if (speedo_debug > 1) - printk(" PCI latency timer (CFLT) is %#x.\n", pci_latency); - - if (speedo_found1(pdev, pci_bus, pci_device_fn, ioaddr, chip_idx, cards_found)) - cards_found++; - } - } - - return cards_found; -} - -static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, - int pci_devfn, long ioaddr, - int chip_idx, int card_idx) -{ - struct net_device *dev; - struct speedo_private *sp; - const char *product; - int i, option; - u16 eeprom[0x100]; - int acpi_idle_state = 0; -#ifndef MODULE - static int did_version = 0; /* Already printed version info. */ - if (speedo_debug > 0 && did_version++ == 0) - printk(version); -#endif - - dev = init_etherdev(NULL, sizeof(struct speedo_private)); - - if (dev->mem_start > 0) - option = dev->mem_start; - else if (card_idx >= 0 && options[card_idx] >= 0) - option = options[card_idx]; - else - option = 0; - - /* Read the station address EEPROM before doing the reset. - Nominally his should even be done before accepting the device, but - then we wouldn't have a device name with which to report the error. - The size test is for 6 bit vs. 8 bit address serial EEPROMs. - */ - { - unsigned long iobase; - int read_cmd, ee_size; - u16 sum; - int j; - - /* Use IO only to avoid postponed writes and satisfy EEPROM timing - requirements. */ -#if defined(PCI_SUPPORT_VER2) - iobase = pci_base_address(pdev, 1) & ~3UL; -#else - { - u32 pci_ioaddr; - pcibios_read_config_dword(pci_bus, pci_devfn, - PCI_BASE_ADDRESS_1, &pci_ioaddr); - iobase = pci_ioaddr & ~3UL; - } -#endif - if ((do_eeprom_cmd(iobase, EE_READ_CMD << 24, 27) & 0xffe0000) - == 0xffe0000) { - ee_size = 0x100; - read_cmd = EE_READ_CMD << 24; - } else { - ee_size = 0x40; - read_cmd = EE_READ_CMD << 22; - } - - for (j = 0, i = 0, sum = 0; i < ee_size; i++) { - u16 value = do_eeprom_cmd(iobase, read_cmd | (i << 16), 27); - eeprom[i] = value; - sum += value; - if (i < 3) { - dev->dev_addr[j++] = value; - dev->dev_addr[j++] = value >> 8; - } - } - if (sum != 0xBABA) - printk(KERN_WARNING "%s: Invalid EEPROM checksum %#4.4x, " - "check settings before activating this device!\n", - dev->name, sum); - /* Don't unregister_netdev(dev); as the EEPro may actually be - usable, especially if the MAC address is set later. - On the other hand, it may be unusable if MDI data is corrupted. */ - } - - /* Reset the chip: stop Tx and Rx processes and clear counters. - This takes less than 10usec and will easily finish before the next - action. */ - outl(PortReset, ioaddr + SCBPort); - inl(ioaddr + SCBPort); - /* Honor PortReset timing. */ - udelay(10); - - if (eeprom[3] & 0x0100) - product = "OEM i82557/i82558 10/100 Ethernet"; - else - product = pci_tbl[chip_idx].name; - - printk(KERN_INFO "%s: %s, ", dev->name, product); - - for (i = 0; i < 5; i++) - printk("%2.2X:", dev->dev_addr[i]); - printk("%2.2X, ", dev->dev_addr[i]); -#ifdef USE_IO - printk("I/O at %#3lx, ", ioaddr); -#endif - printk("IRQ %d.\n", pdev->irq); - -#if 1 || defined(kernel_bloat) - /* OK, this is pure kernel bloat. I don't like it when other drivers - waste non-pageable kernel space to emit similar messages, but I need - them for bug reports. */ - { - const char *connectors[] = {" RJ45", " BNC", " AUI", " MII"}; - /* The self-test results must be paragraph aligned. */ - s32 str[6], *volatile self_test_results; - int boguscnt = 16000; /* Timeout for set-test. */ - if ((eeprom[3] & 0x03) != 0x03) - printk(KERN_INFO " Receiver lock-up bug exists -- enabling" - " work-around.\n"); - printk(KERN_INFO " Board assembly %4.4x%2.2x-%3.3d, Physical" - " connectors present:", - eeprom[8], eeprom[9]>>8, eeprom[9] & 0xff); - for (i = 0; i < 4; i++) - if (eeprom[5] & (1<<i)) - printk(connectors[i]); - printk("\n"KERN_INFO" Primary interface chip %s PHY #%d.\n", - phys[(eeprom[6]>>8)&15], eeprom[6] & 0x1f); - if (eeprom[7] & 0x0700) - printk(KERN_INFO " Secondary interface chip %s.\n", - phys[(eeprom[7]>>8)&7]); - if (((eeprom[6]>>8) & 0x3f) == DP83840 - || ((eeprom[6]>>8) & 0x3f) == DP83840A) { - int mdi_reg23 = mdio_read(ioaddr, eeprom[6] & 0x1f, 23) | 0x0422; - if (congenb) - mdi_reg23 |= 0x0100; - printk(KERN_INFO" DP83840 specific setup, setting register 23 to %4.4x.\n", - mdi_reg23); - mdio_write(ioaddr, eeprom[6] & 0x1f, 23, mdi_reg23); - } - if ((option >= 0) && (option & 0x70)) { - printk(KERN_INFO " Forcing %dMbs %s-duplex operation.\n", - (option & 0x20 ? 100 : 10), - (option & 0x10 ? "full" : "half")); - mdio_write(ioaddr, eeprom[6] & 0x1f, 0, - ((option & 0x20) ? 0x2000 : 0) | /* 100mbps? */ - ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */ - } - - /* Perform a system self-test. */ - self_test_results = (s32*) ((((long) str) + 15) & ~0xf); - self_test_results[0] = 0; - self_test_results[1] = -1; - outl(virt_to_bus(self_test_results) | PortSelfTest, ioaddr + SCBPort); - do { - udelay(10); - } while (self_test_results[1] == -1 && --boguscnt >= 0); - - if (boguscnt < 0) { /* Test optimized out. */ - printk(KERN_ERR "Self test failed, status %8.8x:\n" - KERN_ERR " Failure to initialize the i82557.\n" - KERN_ERR " Verify that the card is a bus-master" - " capable slot.\n", - self_test_results[1]); - } else - printk(KERN_INFO " General self-test: %s.\n" - KERN_INFO " Serial sub-system self-test: %s.\n" - KERN_INFO " Internal registers self-test: %s.\n" - KERN_INFO " ROM checksum self-test: %s (%#8.8x).\n", - self_test_results[1] & 0x1000 ? "failed" : "passed", - self_test_results[1] & 0x0020 ? "failed" : "passed", - self_test_results[1] & 0x0008 ? "failed" : "passed", - self_test_results[1] & 0x0004 ? "failed" : "passed", - self_test_results[0]); - } -#endif /* kernel_bloat */ - - outl(PortReset, ioaddr + SCBPort); - inl(ioaddr + SCBPort); - /* Honor PortReset timing. */ - udelay(10); - - /* We do a request_region() only to register /proc/ioports info. */ - request_region(ioaddr, SPEEDO3_TOTAL_SIZE, "Intel Speedo3 Ethernet"); - - dev->base_addr = ioaddr; - dev->irq = pdev->irq; - - sp = dev->priv; - if (dev->priv == NULL) { - void *mem = kmalloc(sizeof(*sp), GFP_KERNEL); - dev->priv = sp = mem; /* Cache align here if kmalloc does not. */ - sp->priv_addr = mem; - } - memset(sp, 0, sizeof(*sp)); - sp->next_module = root_speedo_dev; - root_speedo_dev = dev; - - sp->pci_bus = pci_bus; - sp->pci_devfn = pci_devfn; - sp->chip_id = chip_idx; - sp->acpi_pwr = acpi_idle_state; - - sp->full_duplex = option >= 0 && (option & 0x10) ? 1 : 0; - if (card_idx >= 0) { - if (full_duplex[card_idx] >= 0) - sp->full_duplex = full_duplex[card_idx]; - } - sp->default_port = option >= 0 ? (option & 0x0f) : 0; - - sp->phy[0] = eeprom[6]; - sp->phy[1] = eeprom[7]; - sp->rx_bug = (eeprom[3] & 0x03) == 3 ? 0 : 1; - - if (sp->rx_bug) - printk(KERN_INFO " Receiver lock-up workaround activated.\n"); - - /* The Speedo-specific entries in the device structure. */ - dev->open = &speedo_open; - dev->hard_start_xmit = &speedo_start_xmit; -#if defined(HAS_NETIF_QUEUE) - dev->tx_timeout = &speedo_tx_timeout; - dev->watchdog_timeo = TX_TIMEOUT; -#endif - dev->stop = &speedo_close; - dev->get_stats = &speedo_get_stats; - dev->set_multicast_list = &set_rx_mode; - dev->do_ioctl = &speedo_ioctl; - - return dev; -} - -/* Serial EEPROM section. - A "bit" grungy, but we work our way through bit-by-bit :->. */ -/* EEPROM_Ctrl bits. */ -#define EE_SHIFT_CLK 0x01 /* EEPROM shift clock. */ -#define EE_CS 0x02 /* EEPROM chip select. */ -#define EE_DATA_WRITE 0x04 /* EEPROM chip data in. */ -#define EE_DATA_READ 0x08 /* EEPROM chip data out. */ -#define EE_ENB (0x4800 | EE_CS) -#define EE_WRITE_0 0x4802 -#define EE_WRITE_1 0x4806 -#define EE_OFFSET SCBeeprom - -/* The fixes for the code were kindly provided by Dragan Stancevic - <visitor@valinux.com> to strictly follow Intel specifications of EEPROM - access timing. - The publicly available sheet 64486302 (sec. 3.1) specifies 1us access - interval for serial EEPROM. However, it looks like that there is an - additional requirement dictating larger udelay's in the code below. - 2000/05/24 SAW */ -static int do_eeprom_cmd(long ioaddr, int cmd, int cmd_len) -{ - unsigned retval = 0; - long ee_addr = ioaddr + SCBeeprom; - - io_outw(EE_ENB, ee_addr); udelay(2); - io_outw(EE_ENB | EE_SHIFT_CLK, ee_addr); udelay(2); - - /* Shift the command bits out. */ - do { - short dataval = (cmd & (1 << cmd_len)) ? EE_WRITE_1 : EE_WRITE_0; - io_outw(dataval, ee_addr); udelay(2); - io_outw(dataval | EE_SHIFT_CLK, ee_addr); udelay(2); - retval = (retval << 1) | ((io_inw(ee_addr) & EE_DATA_READ) ? 1 : 0); - } while (--cmd_len >= 0); - io_outw(EE_ENB, ee_addr); udelay(2); - - /* Terminate the EEPROM access. */ - io_outw(EE_ENB & ~EE_CS, ee_addr); - return retval; -} - -static int mdio_read(long ioaddr, int phy_id, int location) -{ - int val, boguscnt = 64*10; /* <64 usec. to complete, typ 27 ticks */ - outl(0x08000000 | (location<<16) | (phy_id<<21), ioaddr + SCBCtrlMDI); - do { - val = inl(ioaddr + SCBCtrlMDI); - if (--boguscnt < 0) { - printk(KERN_ERR " mdio_read() timed out with val = %8.8x.\n", val); - break; - } - } while (! (val & 0x10000000)); - return val & 0xffff; -} - -static int mdio_write(long ioaddr, int phy_id, int location, int value) -{ - int val, boguscnt = 64*10; /* <64 usec. to complete, typ 27 ticks */ - outl(0x04000000 | (location<<16) | (phy_id<<21) | value, - ioaddr + SCBCtrlMDI); - do { - val = inl(ioaddr + SCBCtrlMDI); - if (--boguscnt < 0) { - printk(KERN_ERR" mdio_write() timed out with val = %8.8x.\n", val); - break; - } - } while (! (val & 0x10000000)); - return val & 0xffff; -} - - -static int -speedo_open(struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - long ioaddr = dev->base_addr; - - if (speedo_debug > 1) - printk(KERN_DEBUG "%s: speedo_open() irq %d.\n", dev->name, dev->irq); - - MOD_INC_USE_COUNT; - - /* Set up the Tx queue early.. */ - sp->cur_tx = 0; - sp->dirty_tx = 0; - sp->last_cmd = 0; - sp->tx_full = 0; - sp->lock = (spinlock_t) SPIN_LOCK_UNLOCKED; - sp->in_interrupt = 0; - - /* .. we can safely take handler calls during init. */ - if (request_irq(dev->irq, &speedo_interrupt, SA_SHIRQ, dev->name, dev)) { - MOD_DEC_USE_COUNT; - return -EAGAIN; - } - - dev->if_port = sp->default_port; - -#ifdef oh_no_you_dont_unless_you_honour_the_options_passed_in_to_us - /* Retrigger negotiation to reset previous errors. */ - if ((sp->phy[0] & 0x8000) == 0) { - int phy_addr = sp->phy[0] & 0x1f ; - /* Use 0x3300 for restarting NWay, other values to force xcvr: - 0x0000 10-HD - 0x0100 10-FD - 0x2000 100-HD - 0x2100 100-FD - */ -#ifdef honor_default_port - mdio_write(ioaddr, phy_addr, 0, mii_ctrl[dev->default_port & 7]); -#else - mdio_write(ioaddr, phy_addr, 0, 0x3300); -#endif - } -#endif - - speedo_init_rx_ring(dev); - - /* Fire up the hardware. */ - outw(SCBMaskAll, ioaddr + SCBCmd); - speedo_resume(dev); - - dev->interrupt = 0; - dev->start = 1; - netif_start_queue(dev); - - /* Setup the chip and configure the multicast list. */ - sp->mc_setup_head = NULL; - sp->mc_setup_tail = NULL; - sp->flow_ctrl = sp->partner = 0; - sp->rx_mode = -1; /* Invalid -> always reset the mode. */ - set_rx_mode(dev); - if ((sp->phy[0] & 0x8000) == 0) - sp->advertising = mdio_read(ioaddr, sp->phy[0] & 0x1f, 4); - - if (speedo_debug > 2) { - printk(KERN_DEBUG "%s: Done speedo_open(), status %8.8x.\n", - dev->name, inw(ioaddr + SCBStatus)); - } - - /* Set the timer. The timer serves a dual purpose: - 1) to monitor the media interface (e.g. link beat) and perhaps switch - to an alternate media type - 2) to monitor Rx activity, and restart the Rx process if the receiver - hangs. */ - init_timer(&sp->timer); - sp->timer.expires = RUN_AT((24*HZ)/10); /* 2.4 sec. */ - sp->timer.data = (unsigned long)dev; - sp->timer.function = &speedo_timer; /* timer handler */ - add_timer(&sp->timer); - - /* No need to wait for the command unit to accept here. */ - if ((sp->phy[0] & 0x8000) == 0) - mdio_read(ioaddr, sp->phy[0] & 0x1f, 0); - - return 0; -} - -/* Start the chip hardware after a full reset. */ -static void speedo_resume(struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - long ioaddr = dev->base_addr; - - /* Start with a Tx threshold of 256 (0x..20.... 8 byte units). */ - sp->tx_threshold = 0x01208000; - - /* Set the segment registers to '0'. */ - wait_for_cmd_done(ioaddr + SCBCmd); - outl(0, ioaddr + SCBPointer); - /* impose a delay to avoid a bug */ - inl(ioaddr + SCBPointer); - udelay(10); - outb(RxAddrLoad, ioaddr + SCBCmd); - wait_for_cmd_done(ioaddr + SCBCmd); - outb(CUCmdBase, ioaddr + SCBCmd); - wait_for_cmd_done(ioaddr + SCBCmd); - - /* Load the statistics block and rx ring addresses. */ - outl(virt_to_bus(&sp->lstats), ioaddr + SCBPointer); - outb(CUStatsAddr, ioaddr + SCBCmd); - sp->lstats.done_marker = 0; - wait_for_cmd_done(ioaddr + SCBCmd); - - if (sp->rx_ringp[sp->cur_rx % RX_RING_SIZE] == NULL) { - if (speedo_debug > 2) - printk(KERN_DEBUG "%s: NULL cur_rx in speedo_resume().\n", - dev->name); - } else { - outl(virt_to_bus(sp->rx_ringp[sp->cur_rx % RX_RING_SIZE]), - ioaddr + SCBPointer); - outb(RxStart, ioaddr + SCBCmd); - wait_for_cmd_done(ioaddr + SCBCmd); - } - - outb(CUDumpStats, ioaddr + SCBCmd); - - /* Fill the first command with our physical address. */ - { - struct descriptor *ias_cmd; - - ias_cmd = - (struct descriptor *)&sp->tx_ring[sp->cur_tx++ % TX_RING_SIZE]; - /* Avoid a bug(?!) here by marking the command already completed. */ - ias_cmd->cmd_status = cpu_to_le32((CmdSuspend | CmdIASetup) | 0xa000); - ias_cmd->link = - virt_to_le32desc(&sp->tx_ring[sp->cur_tx % TX_RING_SIZE]); - memcpy(ias_cmd->params, dev->dev_addr, 6); - sp->last_cmd = ias_cmd; - } - - /* Start the chip's Tx process and unmask interrupts. */ - wait_for_cmd_done(ioaddr + SCBCmd); - outl(virt_to_bus(&sp->tx_ring[sp->dirty_tx % TX_RING_SIZE]), - ioaddr + SCBPointer); - /* We are not ACK-ing FCP and ER in the interrupt handler yet so they should - remain masked --Dragan */ - outw(CUStart | SCBMaskEarlyRx | SCBMaskFlowCtl, ioaddr + SCBCmd); -} - -/* Media monitoring and control. */ -static void speedo_timer(unsigned long data) -{ - struct net_device *dev = (struct net_device *)data; - struct speedo_private *sp = (struct speedo_private *)dev->priv; - long ioaddr = dev->base_addr; - int phy_num = sp->phy[0] & 0x1f; - - /* We have MII and lost link beat. */ - if ((sp->phy[0] & 0x8000) == 0) { - int partner = mdio_read(ioaddr, phy_num, 5); - if (partner != sp->partner) { - int flow_ctrl = sp->advertising & partner & 0x0400 ? 1 : 0; - if (speedo_debug > 2) { - printk(KERN_DEBUG "%s: Link status change.\n", dev->name); - printk(KERN_DEBUG "%s: Old partner %x, new %x, adv %x.\n", - dev->name, sp->partner, partner, sp->advertising); - } - sp->partner = partner; - if (flow_ctrl != sp->flow_ctrl) { - sp->flow_ctrl = flow_ctrl; - sp->rx_mode = -1; /* Trigger a reload. */ - } - /* Clear sticky bit. */ - mdio_read(ioaddr, phy_num, 1); - /* If link beat has returned... */ - if (mdio_read(ioaddr, phy_num, 1) & 0x0004) - dev->flags |= IFF_RUNNING; - else - dev->flags &= ~IFF_RUNNING; - } - } - if (speedo_debug > 3) { - printk(KERN_DEBUG "%s: Media control tick, status %4.4x.\n", - dev->name, inw(ioaddr + SCBStatus)); - } - if (sp->rx_mode < 0 || - (sp->rx_bug && jiffies - sp->last_rx_time > 2*HZ)) { - /* We haven't received a packet in a Long Time. We might have been - bitten by the receiver hang bug. This can be cleared by sending - a set multicast list command. */ - if (speedo_debug > 2) - printk(KERN_DEBUG "%s: Sending a multicast list set command" - " from a timer routine.\n", dev->name); - set_rx_mode(dev); - } - /* We must continue to monitor the media. */ - sp->timer.expires = RUN_AT(2*HZ); /* 2.0 sec. */ - add_timer(&sp->timer); -} - -static void speedo_show_state(struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; -#if 0 - long ioaddr = dev->base_addr; - int phy_num = sp->phy[0] & 0x1f; -#endif - int i; - - /* Print a few items for debugging. */ - if (speedo_debug > 0) { - int i; - printk(KERN_DEBUG "%s: Tx ring dump, Tx queue %u / %u:\n", dev->name, - sp->cur_tx, sp->dirty_tx); - for (i = 0; i < TX_RING_SIZE; i++) - printk(KERN_DEBUG "%s: %c%c%2d %8.8x.\n", dev->name, - i == sp->dirty_tx % TX_RING_SIZE ? '*' : ' ', - i == sp->cur_tx % TX_RING_SIZE ? '=' : ' ', - i, sp->tx_ring[i].status); - } - printk(KERN_DEBUG "%s: Printing Rx ring" - " (next to receive into %u, dirty index %u).\n", - dev->name, sp->cur_rx, sp->dirty_rx); - - for (i = 0; i < RX_RING_SIZE; i++) - printk(KERN_DEBUG "%s: %c%c%c%2d %8.8x.\n", dev->name, - sp->rx_ringp[i] == sp->last_rxf ? 'l' : ' ', - i == sp->dirty_rx % RX_RING_SIZE ? '*' : ' ', - i == sp->cur_rx % RX_RING_SIZE ? '=' : ' ', - i, (sp->rx_ringp[i] != NULL) ? - (unsigned)sp->rx_ringp[i]->status : 0); - -#if 0 - for (i = 0; i < 16; i++) { - /* FIXME: what does it mean? --SAW */ - if (i == 6) i = 21; - printk(KERN_DEBUG "%s: PHY index %d register %d is %4.4x.\n", - dev->name, phy_num, i, mdio_read(ioaddr, phy_num, i)); - } -#endif - -} - -/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ -static void -speedo_init_rx_ring(struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - struct RxFD *rxf, *last_rxf = NULL; - int i; - - sp->cur_rx = 0; - - for (i = 0; i < RX_RING_SIZE; i++) { - struct sk_buff *skb; - skb = dev_alloc_skb(PKT_BUF_SZ + sizeof(struct RxFD)); - sp->rx_skbuff[i] = skb; - if (skb == NULL) - break; /* OK. Just initially short of Rx bufs. */ - skb->dev = dev; /* Mark as being used by this device. */ - rxf = (struct RxFD *)skb->tail; - sp->rx_ringp[i] = rxf; - skb_reserve(skb, sizeof(struct RxFD)); - if (last_rxf) - last_rxf->link = virt_to_le32desc(rxf); - last_rxf = rxf; - rxf->status = cpu_to_le32(0x00000001); /* '1' is flag value only. */ - rxf->link = 0; /* None yet. */ - /* This field unused by i82557. */ - rxf->rx_buf_addr = 0xffffffff; - rxf->count = cpu_to_le32(PKT_BUF_SZ << 16); - } - sp->dirty_rx = (unsigned int)(i - RX_RING_SIZE); - /* Mark the last entry as end-of-list. */ - last_rxf->status = cpu_to_le32(0xC0000002); /* '2' is flag value only. */ - sp->last_rxf = last_rxf; -} - -static void speedo_purge_tx(struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - int entry; - - while ((int)(sp->cur_tx - sp->dirty_tx) > 0) { - entry = sp->dirty_tx % TX_RING_SIZE; - if (sp->tx_skbuff[entry]) { - sp->stats.tx_errors++; - dev_free_skb(sp->tx_skbuff[entry]); - sp->tx_skbuff[entry] = 0; - } - sp->dirty_tx++; - } - while (sp->mc_setup_head != NULL) { - struct speedo_mc_block *t; - if (speedo_debug > 1) - printk(KERN_DEBUG "%s: freeing mc frame.\n", dev->name); - t = sp->mc_setup_head->next; - kfree(sp->mc_setup_head); - sp->mc_setup_head = t; - } - sp->mc_setup_tail = NULL; - sp->tx_full = 0; - netif_wake_queue(dev); -} - -static void reset_mii(struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - long ioaddr = dev->base_addr; - /* Reset the MII transceiver, suggested by Fred Young @ scalable.com. */ - if ((sp->phy[0] & 0x8000) == 0) { - int phy_addr = sp->phy[0] & 0x1f; - int advertising = mdio_read(ioaddr, phy_addr, 4); - int mii_bmcr = mdio_read(ioaddr, phy_addr, 0); - mdio_write(ioaddr, phy_addr, 0, 0x0400); - mdio_write(ioaddr, phy_addr, 1, 0x0000); - mdio_write(ioaddr, phy_addr, 4, 0x0000); - mdio_write(ioaddr, phy_addr, 0, 0x8000); -#ifdef honor_default_port - mdio_write(ioaddr, phy_addr, 0, mii_ctrl[dev->default_port & 7]); -#else - mdio_read(ioaddr, phy_addr, 0); - mdio_write(ioaddr, phy_addr, 0, mii_bmcr); - mdio_write(ioaddr, phy_addr, 4, advertising); -#endif - } -} - -static void speedo_tx_timeout(struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - long ioaddr = dev->base_addr; - int status = inw(ioaddr + SCBStatus); - unsigned long flags; - - printk(KERN_WARNING "%s: Transmit timed out: status %4.4x " - " %4.4x at %d/%d command %8.8x.\n", - dev->name, status, inw(ioaddr + SCBCmd), - sp->dirty_tx, sp->cur_tx, - sp->tx_ring[sp->dirty_tx % TX_RING_SIZE].status); - - /* Trigger a stats dump to give time before the reset. */ - speedo_get_stats(dev); - - speedo_show_state(dev); -#if 0 - if ((status & 0x00C0) != 0x0080 - && (status & 0x003C) == 0x0010) { - /* Only the command unit has stopped. */ - printk(KERN_WARNING "%s: Trying to restart the transmitter...\n", - dev->name); - outl(virt_to_bus(&sp->tx_ring[sp->dirty_tx % TX_RING_SIZE]), - ioaddr + SCBPointer); - outw(CUStart, ioaddr + SCBCmd); - reset_mii(dev); - } else { -#else - { -#endif - start_bh_atomic(); - /* Ensure that timer routine doesn't run! */ - del_timer(&sp->timer); - end_bh_atomic(); - /* Reset the Tx and Rx units. */ - outl(PortReset, ioaddr + SCBPort); - /* We may get spurious interrupts here. But I don't think that they - may do much harm. 1999/12/09 SAW */ - udelay(10); - /* Disable interrupts. */ - outw(SCBMaskAll, ioaddr + SCBCmd); - synchronize_irq(); - speedo_tx_buffer_gc(dev); - /* Free as much as possible. - It helps to recover from a hang because of out-of-memory. - It also simplifies speedo_resume() in case TX ring is full or - close-to-be full. */ - speedo_purge_tx(dev); - speedo_refill_rx_buffers(dev, 1); - spin_lock_irqsave(&sp->lock, flags); - speedo_resume(dev); - sp->rx_mode = -1; - dev->trans_start = jiffies; - spin_unlock_irqrestore(&sp->lock, flags); - set_rx_mode(dev); /* it takes the spinlock itself --SAW */ - /* Reset MII transceiver. Do it before starting the timer to serialize - mdio_xxx operations. Yes, it's a paranoya :-) 2000/05/09 SAW */ - reset_mii(dev); - sp->timer.expires = RUN_AT(2*HZ); - add_timer(&sp->timer); - } - return; -} - -static int -speedo_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - long ioaddr = dev->base_addr; - int entry; - -#if ! defined(HAS_NETIF_QUEUE) - if (test_bit(0, (void*)&dev->tbusy) != 0) { - int tickssofar = jiffies - dev->trans_start; - if (tickssofar < TX_TIMEOUT - 2) - return 1; - if (tickssofar < TX_TIMEOUT) { - /* Reap sent packets from the full Tx queue. */ - unsigned long flags; - /* Take a spinlock to make wait_for_cmd_done and sending the - command atomic. --SAW */ - spin_lock_irqsave(&sp->lock, flags); - wait_for_cmd_done(ioaddr + SCBCmd); - outw(SCBTriggerIntr, ioaddr + SCBCmd); - spin_unlock_irqrestore(&sp->lock, flags); - return 1; - } - speedo_tx_timeout(dev); - return 1; - } -#endif - - { /* Prevent interrupts from changing the Tx ring from underneath us. */ - unsigned long flags; - - spin_lock_irqsave(&sp->lock, flags); - - /* Check if there are enough space. */ - if ((int)(sp->cur_tx - sp->dirty_tx) >= TX_QUEUE_LIMIT) { - printk(KERN_ERR "%s: incorrect tbusy state, fixed.\n", dev->name); - netif_stop_queue(dev); - sp->tx_full = 1; - spin_unlock_irqrestore(&sp->lock, flags); - return 1; - } - - /* Calculate the Tx descriptor entry. */ - entry = sp->cur_tx++ % TX_RING_SIZE; - - sp->tx_skbuff[entry] = skb; - sp->tx_ring[entry].status = - cpu_to_le32(CmdSuspend | CmdTx | CmdTxFlex); - if (!(entry & ((TX_RING_SIZE>>2)-1))) - sp->tx_ring[entry].status |= cpu_to_le32(CmdIntr); - sp->tx_ring[entry].link = - virt_to_le32desc(&sp->tx_ring[sp->cur_tx % TX_RING_SIZE]); - sp->tx_ring[entry].tx_desc_addr = - virt_to_le32desc(&sp->tx_ring[entry].tx_buf_addr0); - /* The data region is always in one buffer descriptor. */ - sp->tx_ring[entry].count = cpu_to_le32(sp->tx_threshold); - sp->tx_ring[entry].tx_buf_addr0 = virt_to_le32desc(skb->data); - sp->tx_ring[entry].tx_buf_size0 = cpu_to_le32(skb->len); - /* Trigger the command unit resume. */ - wait_for_cmd_done(ioaddr + SCBCmd); - clear_suspend(sp->last_cmd); - /* We want the time window between clearing suspend flag on the previous - command and resuming CU to be as small as possible. - Interrupts in between are very undesired. --SAW */ - outb(CUResume, ioaddr + SCBCmd); - sp->last_cmd = (struct descriptor *)&sp->tx_ring[entry]; - - /* Leave room for set_rx_mode(). If there is no more space than reserved - for multicast filter mark the ring as full. */ - if ((int)(sp->cur_tx - sp->dirty_tx) >= TX_QUEUE_LIMIT) { - netif_stop_queue(dev); - sp->tx_full = 1; - } - - spin_unlock_irqrestore(&sp->lock, flags); - } - - dev->trans_start = jiffies; - - return 0; -} - -static void speedo_tx_buffer_gc(struct net_device *dev) -{ - unsigned int dirty_tx; - struct speedo_private *sp = (struct speedo_private *)dev->priv; - - dirty_tx = sp->dirty_tx; - while ((int)(sp->cur_tx - dirty_tx) > 0) { - int entry = dirty_tx % TX_RING_SIZE; - int status = le32_to_cpu(sp->tx_ring[entry].status); - - if (speedo_debug > 5) - printk(KERN_DEBUG " scavenge candidate %d status %4.4x.\n", - entry, status); - if ((status & StatusComplete) == 0) - break; /* It still hasn't been processed. */ - if (status & TxUnderrun) - if (sp->tx_threshold < 0x01e08000) { - if (speedo_debug > 2) - printk(KERN_DEBUG "%s: TX underrun, threshold adjusted.\n", - dev->name); - sp->tx_threshold += 0x00040000; - } - /* Free the original skb. */ - if (sp->tx_skbuff[entry]) { - sp->stats.tx_packets++; /* Count only user packets. */ - /* sp->stats.tx_bytes += sp->tx_skbuff[entry]->len; */ - dev_free_skb(sp->tx_skbuff[entry]); - sp->tx_skbuff[entry] = 0; - } - dirty_tx++; - } - - if (speedo_debug && (int)(sp->cur_tx - dirty_tx) > TX_RING_SIZE) { - printk(KERN_ERR "out-of-sync dirty pointer, %d vs. %d," - " full=%d.\n", - dirty_tx, sp->cur_tx, sp->tx_full); - dirty_tx += TX_RING_SIZE; - } - - while (sp->mc_setup_head != NULL - && (int)(dirty_tx - sp->mc_setup_head->tx - 1) > 0) { - struct speedo_mc_block *t; - if (speedo_debug > 1) - printk(KERN_DEBUG "%s: freeing mc frame.\n", dev->name); - t = sp->mc_setup_head->next; - kfree(sp->mc_setup_head); - sp->mc_setup_head = t; - } - if (sp->mc_setup_head == NULL) - sp->mc_setup_tail = NULL; - - sp->dirty_tx = dirty_tx; -} - -/* The interrupt handler does all of the Rx thread work and cleans up - after the Tx thread. */ -static void speedo_interrupt(int irq, void *dev_instance, struct pt_regs *regs) -{ - struct net_device *dev = (struct net_device *)dev_instance; - struct speedo_private *sp; - long ioaddr, boguscnt = max_interrupt_work; - unsigned short status; - -#ifndef final_version - if (dev == NULL) { - printk(KERN_ERR "speedo_interrupt(): irq %d for unknown device.\n", irq); - return; - } -#endif - - ioaddr = dev->base_addr; - sp = (struct speedo_private *)dev->priv; - -#ifndef final_version - /* A lock to prevent simultaneous entry on SMP machines. */ - if (test_and_set_bit(0, (void*)&sp->in_interrupt)) { - printk(KERN_ERR"%s: SMP simultaneous entry of an interrupt handler.\n", - dev->name); - sp->in_interrupt = 0; /* Avoid halting machine. */ - return; - } - dev->interrupt = 1; -#endif - - do { - status = inw(ioaddr + SCBStatus); - /* Acknowledge all of the current interrupt sources ASAP. */ - /* Will change from 0xfc00 to 0xff00 when we start handling - FCP and ER interrupts --Dragan */ - outw(status & 0xfc00, ioaddr + SCBStatus); - - if (speedo_debug > 3) - printk(KERN_DEBUG "%s: interrupt status=%#4.4x.\n", - dev->name, status); - - if ((status & 0xfc00) == 0) - break; - - /* Always check if all rx buffers are allocated. --SAW */ - speedo_refill_rx_buffers(dev, 0); - - if ((status & 0x5000) || /* Packet received, or Rx error. */ - (sp->rx_ring_state&(RrNoMem|RrPostponed)) == RrPostponed) - /* Need to gather the postponed packet. */ - speedo_rx(dev); - - if (status & 0x1000) { - spin_lock(&sp->lock); - if ((status & 0x003c) == 0x0028) { /* No more Rx buffers. */ - struct RxFD *rxf; - printk(KERN_WARNING "%s: card reports no RX buffers.\n", - dev->name); - rxf = sp->rx_ringp[sp->cur_rx % RX_RING_SIZE]; - if (rxf == NULL) { - if (speedo_debug > 2) - printk(KERN_DEBUG - "%s: NULL cur_rx in speedo_interrupt().\n", - dev->name); - sp->rx_ring_state |= RrNoMem|RrNoResources; - } else if (rxf == sp->last_rxf) { - if (speedo_debug > 2) - printk(KERN_DEBUG - "%s: cur_rx is last in speedo_interrupt().\n", - dev->name); - sp->rx_ring_state |= RrNoMem|RrNoResources; - } else - outb(RxResumeNoResources, ioaddr + SCBCmd); - } else if ((status & 0x003c) == 0x0008) { /* No resources. */ - struct RxFD *rxf; - printk(KERN_WARNING "%s: card reports no resources.\n", - dev->name); - rxf = sp->rx_ringp[sp->cur_rx % RX_RING_SIZE]; - if (rxf == NULL) { - if (speedo_debug > 2) - printk(KERN_DEBUG - "%s: NULL cur_rx in speedo_interrupt().\n", - dev->name); - sp->rx_ring_state |= RrNoMem|RrNoResources; - } else if (rxf == sp->last_rxf) { - if (speedo_debug > 2) - printk(KERN_DEBUG - "%s: cur_rx is last in speedo_interrupt().\n", - dev->name); - sp->rx_ring_state |= RrNoMem|RrNoResources; - } else { - /* Restart the receiver. */ - outl(virt_to_bus(sp->rx_ringp[sp->cur_rx % RX_RING_SIZE]), - ioaddr + SCBPointer); - outb(RxStart, ioaddr + SCBCmd); - } - } - sp->stats.rx_errors++; - spin_unlock(&sp->lock); - } - - if ((sp->rx_ring_state&(RrNoMem|RrNoResources)) == RrNoResources) { - printk(KERN_WARNING - "%s: restart the receiver after a possible hang.\n", - dev->name); - spin_lock(&sp->lock); - /* Restart the receiver. - I'm not sure if it's always right to restart the receiver - here but I don't know another way to prevent receiver hangs. - 1999/12/25 SAW */ - outl(virt_to_bus(sp->rx_ringp[sp->cur_rx % RX_RING_SIZE]), - ioaddr + SCBPointer); - outb(RxStart, ioaddr + SCBCmd); - sp->rx_ring_state &= ~RrNoResources; - spin_unlock(&sp->lock); - } - - /* User interrupt, Command/Tx unit interrupt or CU not active. */ - if (status & 0xA400) { - spin_lock(&sp->lock); - speedo_tx_buffer_gc(dev); - if (sp->tx_full - && (int)(sp->cur_tx - sp->dirty_tx) < TX_QUEUE_UNFULL) { - /* The ring is no longer full. */ - sp->tx_full = 0; - netif_wake_queue(dev); /* Attention: under a spinlock. --SAW */ - } - spin_unlock(&sp->lock); - } - - if (--boguscnt < 0) { - printk(KERN_ERR "%s: Too much work at interrupt, status=0x%4.4x.\n", - dev->name, status); - /* Clear all interrupt sources. */ - /* Will change from 0xfc00 to 0xff00 when we start handling - FCP and ER interrupts --Dragan */ - outl(0xfc00, ioaddr + SCBStatus); - break; - } - } while (1); - - if (speedo_debug > 3) - printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", - dev->name, inw(ioaddr + SCBStatus)); - - dev->interrupt = 0; - clear_bit(0, (void*)&sp->in_interrupt); - return; -} - -static inline struct RxFD *speedo_rx_alloc(struct net_device *dev, int entry) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - struct RxFD *rxf; - struct sk_buff *skb; - /* Get a fresh skbuff to replace the consumed one. */ - skb = dev_alloc_skb(PKT_BUF_SZ + sizeof(struct RxFD)); - sp->rx_skbuff[entry] = skb; - if (skb == NULL) { - sp->rx_ringp[entry] = NULL; - return NULL; - } - rxf = sp->rx_ringp[entry] = (struct RxFD *)skb->tail; - skb->dev = dev; - skb_reserve(skb, sizeof(struct RxFD)); - rxf->rx_buf_addr = virt_to_bus(skb->tail); - return rxf; -} - -static inline void speedo_rx_link(struct net_device *dev, int entry, - struct RxFD *rxf) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - rxf->status = cpu_to_le32(0xC0000001); /* '1' for driver use only. */ - rxf->link = 0; /* None yet. */ - rxf->count = cpu_to_le32(PKT_BUF_SZ << 16); - sp->last_rxf->link = virt_to_le32desc(rxf); - sp->last_rxf->status &= cpu_to_le32(~0xC0000000); - sp->last_rxf = rxf; -} - -static int speedo_refill_rx_buf(struct net_device *dev, int force) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - int entry; - struct RxFD *rxf; - - entry = sp->dirty_rx % RX_RING_SIZE; - if (sp->rx_skbuff[entry] == NULL) { - rxf = speedo_rx_alloc(dev, entry); - if (rxf == NULL) { - unsigned int forw; - int forw_entry; - if (speedo_debug > 2 || !(sp->rx_ring_state & RrOOMReported)) { - printk(KERN_WARNING "%s: can't fill rx buffer (force %d)!\n", - dev->name, force); - speedo_show_state(dev); - sp->rx_ring_state |= RrOOMReported; - } - if (!force) - return -1; /* Better luck next time! */ - /* Borrow an skb from one of next entries. */ - for (forw = sp->dirty_rx + 1; forw != sp->cur_rx; forw++) - if (sp->rx_skbuff[forw % RX_RING_SIZE] != NULL) - break; - if (forw == sp->cur_rx) - return -1; - forw_entry = forw % RX_RING_SIZE; - sp->rx_skbuff[entry] = sp->rx_skbuff[forw_entry]; - sp->rx_skbuff[forw_entry] = NULL; - rxf = sp->rx_ringp[forw_entry]; - sp->rx_ringp[forw_entry] = NULL; - sp->rx_ringp[entry] = rxf; - } - } else { - rxf = sp->rx_ringp[entry]; - } - speedo_rx_link(dev, entry, rxf); - sp->dirty_rx++; - sp->rx_ring_state &= ~(RrNoMem|RrOOMReported); /* Mark the progress. */ - return 0; -} - -static void speedo_refill_rx_buffers(struct net_device *dev, int force) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - - /* Refill the RX ring. */ - while ((int)(sp->cur_rx - sp->dirty_rx) > 0 && - speedo_refill_rx_buf(dev, force) != -1); -} - -static int -speedo_rx(struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - int entry = sp->cur_rx % RX_RING_SIZE; - int status; - int rx_work_limit = sp->dirty_rx + RX_RING_SIZE - sp->cur_rx; - int alloc_ok = 1; - - if (speedo_debug > 4) - printk(KERN_DEBUG " In speedo_rx().\n"); - /* If we own the next entry, it's a new packet. Send it up. */ - while (sp->rx_ringp[entry] != NULL && - (status = le32_to_cpu(sp->rx_ringp[entry]->status)) & RxComplete) { - int pkt_len = le32_to_cpu(sp->rx_ringp[entry]->count) & 0x3fff; - - if (--rx_work_limit < 0) - break; - - /* Check for a rare out-of-memory case: the current buffer is - the last buffer allocated in the RX ring. --SAW */ - if (sp->last_rxf == sp->rx_ringp[entry]) { - /* Postpone the packet. It'll be reaped at an interrupt when this - packet is no longer the last packet in the ring. */ - if (speedo_debug > 2) - printk(KERN_DEBUG "%s: RX packet postponed!\n", - dev->name); - sp->rx_ring_state |= RrPostponed; - break; - } - - if (speedo_debug > 4) - printk(KERN_DEBUG " speedo_rx() status %8.8x len %d.\n", status, - pkt_len); - if ((status & (RxErrTooBig|RxOK|0x0f90)) != RxOK) { - if (status & RxErrTooBig) - printk(KERN_ERR "%s: Ethernet frame overran the Rx buffer, " - "status %8.8x!\n", dev->name, status); - else if (! (status & RxOK)) { - /* There was a fatal error. This *should* be impossible. */ - sp->stats.rx_errors++; - printk(KERN_ERR "%s: Anomalous event in speedo_rx(), " - "status %8.8x.\n", - dev->name, status); - } - } else { - struct sk_buff *skb; - - /* Check if the packet is long enough to just accept without - copying to a properly sized skbuff. */ - if (pkt_len < rx_copybreak - && (skb = dev_alloc_skb(pkt_len + 2)) != 0) { - skb->dev = dev; - skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ - /* 'skb_put()' points to the start of sk_buff data area. */ -#if !defined(__alpha__) - /* Packet is in one chunk -- we can copy + cksum. */ - eth_copy_and_sum(skb, sp->rx_skbuff[entry]->tail, pkt_len, 0); - skb_put(skb, pkt_len); -#else - memcpy(skb_put(skb, pkt_len), sp->rx_skbuff[entry]->tail, - pkt_len); -#endif - } else { - /* Pass up the already-filled skbuff. */ - skb = sp->rx_skbuff[entry]; - if (skb == NULL) { - printk(KERN_ERR "%s: Inconsistent Rx descriptor chain.\n", - dev->name); - break; - } - sp->rx_skbuff[entry] = NULL; - skb_put(skb, pkt_len); - sp->rx_ringp[entry] = NULL; - } - skb->protocol = eth_type_trans(skb, dev); - netif_rx(skb); - sp->stats.rx_packets++; - /* sp->stats.rx_bytes += pkt_len; */ - } - entry = (++sp->cur_rx) % RX_RING_SIZE; - sp->rx_ring_state &= ~RrPostponed; - /* Refill the recently taken buffers. - Do it one-by-one to handle traffic bursts better. */ - if (alloc_ok && speedo_refill_rx_buf(dev, 0) == -1) - alloc_ok = 0; - } - - /* Try hard to refill the recently taken buffers. */ - speedo_refill_rx_buffers(dev, 1); - - sp->last_rx_time = jiffies; - - return 0; -} - -static int -speedo_close(struct net_device *dev) -{ - long ioaddr = dev->base_addr; - struct speedo_private *sp = (struct speedo_private *)dev->priv; - int i; - - dev->start = 0; - netif_stop_queue(dev); - - if (speedo_debug > 1) - printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x.\n", - dev->name, inw(ioaddr + SCBStatus)); - - /* Shut off the media monitoring timer. */ - start_bh_atomic(); - del_timer(&sp->timer); - end_bh_atomic(); - - /* Shutting down the chip nicely fails to disable flow control. So.. */ - outl(PortPartialReset, ioaddr + SCBPort); - - free_irq(dev->irq, dev); - - /* Print a few items for debugging. */ - if (speedo_debug > 3) - speedo_show_state(dev); - - /* Free all the skbuffs in the Rx and Tx queues. */ - for (i = 0; i < RX_RING_SIZE; i++) { - struct sk_buff *skb = sp->rx_skbuff[i]; - sp->rx_skbuff[i] = 0; - /* Clear the Rx descriptors. */ - if (skb) - dev_free_skb(skb); - } - - for (i = 0; i < TX_RING_SIZE; i++) { - struct sk_buff *skb = sp->tx_skbuff[i]; - sp->tx_skbuff[i] = 0; - /* Clear the Tx descriptors. */ - if (skb) - dev_free_skb(skb); - } - - /* Free multicast setting blocks. */ - for (i = 0; sp->mc_setup_head != NULL; i++) { - struct speedo_mc_block *t; - t = sp->mc_setup_head->next; - kfree(sp->mc_setup_head); - sp->mc_setup_head = t; - } - sp->mc_setup_tail = NULL; - if (speedo_debug > 0) - printk(KERN_DEBUG "%s: %d multicast blocks dropped.\n", dev->name, i); - - MOD_DEC_USE_COUNT; - - return 0; -} - -/* The Speedo-3 has an especially awkward and unusable method of getting - statistics out of the chip. It takes an unpredictable length of time - for the dump-stats command to complete. To avoid a busy-wait loop we - update the stats with the previous dump results, and then trigger a - new dump. - - These problems are mitigated by the current /proc implementation, which - calls this routine first to judge the output length, and then to emit the - output. - - Oh, and incoming frames are dropped while executing dump-stats! - */ -static struct enet_statistics * -speedo_get_stats(struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - long ioaddr = dev->base_addr; - - /* Update only if the previous dump finished. */ - if (sp->lstats.done_marker == le32_to_cpu(0xA007)) { - sp->stats.tx_aborted_errors += le32_to_cpu(sp->lstats.tx_coll16_errs); - sp->stats.tx_window_errors += le32_to_cpu(sp->lstats.tx_late_colls); - sp->stats.tx_fifo_errors += le32_to_cpu(sp->lstats.tx_underruns); - sp->stats.tx_fifo_errors += le32_to_cpu(sp->lstats.tx_lost_carrier); - /*sp->stats.tx_deferred += le32_to_cpu(sp->lstats.tx_deferred);*/ - sp->stats.collisions += le32_to_cpu(sp->lstats.tx_total_colls); - sp->stats.rx_crc_errors += le32_to_cpu(sp->lstats.rx_crc_errs); - sp->stats.rx_frame_errors += le32_to_cpu(sp->lstats.rx_align_errs); - sp->stats.rx_over_errors += le32_to_cpu(sp->lstats.rx_resource_errs); - sp->stats.rx_fifo_errors += le32_to_cpu(sp->lstats.rx_overrun_errs); - sp->stats.rx_length_errors += le32_to_cpu(sp->lstats.rx_runt_errs); - sp->lstats.done_marker = 0x0000; - if (dev->start) { - unsigned long flags; - /* Take a spinlock to make wait_for_cmd_done and sending the - command atomic. --SAW */ - spin_lock_irqsave(&sp->lock, flags); - wait_for_cmd_done(ioaddr + SCBCmd); - outb(CUDumpStats, ioaddr + SCBCmd); - spin_unlock_irqrestore(&sp->lock, flags); - } - } - return &sp->stats; -} - -static int speedo_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - long ioaddr = dev->base_addr; - u16 *data = (u16 *)&rq->ifr_data; - int phy = sp->phy[0] & 0x1f; - - switch(cmd) { - case SIOCDEVPRIVATE: /* Get the address of the PHY in use. */ - data[0] = phy; - case SIOCDEVPRIVATE+1: /* Read the specified MII register. */ - /* FIXME: these operations need to be serialized with MDIO - access from the timeout handler. - They are currently serialized only with MDIO access from the - timer routine. 2000/05/09 SAW */ - start_bh_atomic(); - data[3] = mdio_read(ioaddr, data[0], data[1]); - end_bh_atomic(); - return 0; - case SIOCDEVPRIVATE+2: /* Write the specified MII register */ - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - start_bh_atomic(); - mdio_write(ioaddr, data[0], data[1], data[2]); - end_bh_atomic(); - return 0; - default: - return -EOPNOTSUPP; - } -} - -/* Set or clear the multicast filter for this adaptor. - This is very ugly with Intel chips -- we usually have to execute an - entire configuration command, plus process a multicast command. - This is complicated. We must put a large configuration command and - an arbitrarily-sized multicast command in the transmit list. - To minimize the disruption -- the previous command might have already - loaded the link -- we convert the current command block, normally a Tx - command, into a no-op and link it to the new command. -*/ -static void set_rx_mode(struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - long ioaddr = dev->base_addr; - struct descriptor *last_cmd; - char new_rx_mode; - unsigned long flags; - int entry, i; - - if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ - new_rx_mode = 3; - } else if ((dev->flags & IFF_ALLMULTI) || - dev->mc_count > multicast_filter_limit) { - new_rx_mode = 1; - } else - new_rx_mode = 0; - - if (speedo_debug > 3) - printk(KERN_DEBUG "%s: set_rx_mode %d -> %d\n", dev->name, - sp->rx_mode, new_rx_mode); - - if ((int)(sp->cur_tx - sp->dirty_tx) > TX_RING_SIZE - TX_MULTICAST_SIZE) { - /* The Tx ring is full -- don't add anything! Hope the mode will be - * set again later. */ - sp->rx_mode = -1; - return; - } - - if (new_rx_mode != sp->rx_mode) { - u8 *config_cmd_data; - - spin_lock_irqsave(&sp->lock, flags); - entry = sp->cur_tx++ % TX_RING_SIZE; - last_cmd = sp->last_cmd; - sp->last_cmd = (struct descriptor *)&sp->tx_ring[entry]; - - sp->tx_skbuff[entry] = 0; /* Redundant. */ - sp->tx_ring[entry].status = cpu_to_le32(CmdSuspend | CmdConfigure); - sp->tx_ring[entry].link = - virt_to_le32desc(&sp->tx_ring[(entry + 1) % TX_RING_SIZE]); - config_cmd_data = (void *)&sp->tx_ring[entry].tx_desc_addr; - /* Construct a full CmdConfig frame. */ - memcpy(config_cmd_data, i82558_config_cmd, sizeof(i82558_config_cmd)); - config_cmd_data[1] = (txfifo << 4) | rxfifo; - config_cmd_data[4] = rxdmacount; - config_cmd_data[5] = txdmacount + 0x80; - config_cmd_data[15] |= (new_rx_mode & 2) ? 1 : 0; - /* 0x80 doesn't disable FC 0x84 does. - Disable Flow control since we are not ACK-ing any FC interrupts - for now. --Dragan */ - config_cmd_data[19] = 0x84; - config_cmd_data[19] |= sp->full_duplex ? 0x40 : 0; - config_cmd_data[21] = (new_rx_mode & 1) ? 0x0D : 0x05; - if (sp->phy[0] & 0x8000) { /* Use the AUI port instead. */ - config_cmd_data[15] |= 0x80; - config_cmd_data[8] = 0; - } - /* Trigger the command unit resume. */ - wait_for_cmd_done(ioaddr + SCBCmd); - clear_suspend(last_cmd); - outb(CUResume, ioaddr + SCBCmd); - if ((int)(sp->cur_tx - sp->dirty_tx) >= TX_QUEUE_LIMIT) { - netif_stop_queue(dev); - sp->tx_full = 1; - } - spin_unlock_irqrestore(&sp->lock, flags); - } - - if (new_rx_mode == 0 && dev->mc_count < 4) { - /* The simple case of 0-3 multicast list entries occurs often, and - fits within one tx_ring[] entry. */ - struct dev_mc_list *mclist; - u16 *setup_params, *eaddrs; - - spin_lock_irqsave(&sp->lock, flags); - entry = sp->cur_tx++ % TX_RING_SIZE; - last_cmd = sp->last_cmd; - sp->last_cmd = (struct descriptor *)&sp->tx_ring[entry]; - - sp->tx_skbuff[entry] = 0; - sp->tx_ring[entry].status = cpu_to_le32(CmdSuspend | CmdMulticastList); - sp->tx_ring[entry].link = - virt_to_le32desc(&sp->tx_ring[(entry + 1) % TX_RING_SIZE]); - sp->tx_ring[entry].tx_desc_addr = 0; /* Really MC list count. */ - setup_params = (u16 *)&sp->tx_ring[entry].tx_desc_addr; - *setup_params++ = cpu_to_le16(dev->mc_count*6); - /* Fill in the multicast addresses. */ - for (i = 0, mclist = dev->mc_list; i < dev->mc_count; - i++, mclist = mclist->next) { - eaddrs = (u16 *)mclist->dmi_addr; - *setup_params++ = *eaddrs++; - *setup_params++ = *eaddrs++; - *setup_params++ = *eaddrs++; - } - - wait_for_cmd_done(ioaddr + SCBCmd); - clear_suspend(last_cmd); - /* Immediately trigger the command unit resume. */ - outb(CUResume, ioaddr + SCBCmd); - - if ((int)(sp->cur_tx - sp->dirty_tx) >= TX_QUEUE_LIMIT) { - netif_stop_queue(dev); - sp->tx_full = 1; - } - spin_unlock_irqrestore(&sp->lock, flags); - } else if (new_rx_mode == 0) { - struct dev_mc_list *mclist; - u16 *setup_params, *eaddrs; - struct speedo_mc_block *mc_blk; - struct descriptor *mc_setup_frm; - int i; - - mc_blk = kmalloc(sizeof(*mc_blk) + 2 + multicast_filter_limit*6, - GFP_ATOMIC); - if (mc_blk == NULL) { - printk(KERN_ERR "%s: Failed to allocate a setup frame.\n", - dev->name); - sp->rx_mode = -1; /* We failed, try again. */ - return; - } - mc_blk->next = NULL; - mc_setup_frm = &mc_blk->frame; - - /* Fill the setup frame. */ - if (speedo_debug > 1) - printk(KERN_DEBUG "%s: Constructing a setup frame at %p.\n", - dev->name, mc_setup_frm); - mc_setup_frm->cmd_status = - cpu_to_le32(CmdSuspend | CmdIntr | CmdMulticastList); - /* Link set below. */ - setup_params = (u16 *)&mc_setup_frm->params; - *setup_params++ = cpu_to_le16(dev->mc_count*6); - /* Fill in the multicast addresses. */ - for (i = 0, mclist = dev->mc_list; i < dev->mc_count; - i++, mclist = mclist->next) { - eaddrs = (u16 *)mclist->dmi_addr; - *setup_params++ = *eaddrs++; - *setup_params++ = *eaddrs++; - *setup_params++ = *eaddrs++; - } - - /* Disable interrupts while playing with the Tx Cmd list. */ - spin_lock_irqsave(&sp->lock, flags); - - if (sp->mc_setup_tail) - sp->mc_setup_tail->next = mc_blk; - else - sp->mc_setup_head = mc_blk; - sp->mc_setup_tail = mc_blk; - mc_blk->tx = sp->cur_tx; - - entry = sp->cur_tx++ % TX_RING_SIZE; - last_cmd = sp->last_cmd; - sp->last_cmd = mc_setup_frm; - - /* Change the command to a NoOp, pointing to the CmdMulti command. */ - sp->tx_skbuff[entry] = 0; - sp->tx_ring[entry].status = cpu_to_le32(CmdNOp); - sp->tx_ring[entry].link = virt_to_le32desc(mc_setup_frm); - - /* Set the link in the setup frame. */ - mc_setup_frm->link = - virt_to_le32desc(&(sp->tx_ring[(entry+1) % TX_RING_SIZE])); - - wait_for_cmd_done(ioaddr + SCBCmd); - clear_suspend(last_cmd); - /* Immediately trigger the command unit resume. */ - outb(CUResume, ioaddr + SCBCmd); - - if ((int)(sp->cur_tx - sp->dirty_tx) >= TX_QUEUE_LIMIT) { - netif_stop_queue(dev); - sp->tx_full = 1; - } - spin_unlock_irqrestore(&sp->lock, flags); - - if (speedo_debug > 5) - printk(" CmdMCSetup frame length %d in entry %d.\n", - dev->mc_count, entry); - } - - sp->rx_mode = new_rx_mode; -} - -#ifdef MODULE - -int init_module(void) -{ - int cards_found; - - if (debug >= 0 && speedo_debug != debug) - printk(KERN_INFO "eepro100.c: Debug level is %d.\n", debug); - if (debug >= 0) - speedo_debug = debug; - /* Always emit the version message. */ - if (speedo_debug) - printk(KERN_INFO "%s", version); - - cards_found = eepro100_init(); - if (cards_found <= 0) { - printk(KERN_INFO "eepro100: No cards found, driver not installed.\n"); - return -ENODEV; - } - return 0; -} - -void -cleanup_module(void) -{ - struct net_device *next_dev; - - /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ - while (root_speedo_dev) { - struct speedo_private *sp = (void *)root_speedo_dev->priv; - unregister_netdev(root_speedo_dev); - release_region(root_speedo_dev->base_addr, SPEEDO3_TOTAL_SIZE); -#ifndef USE_IO - iounmap((char *)root_speedo_dev->base_addr); -#endif - next_dev = sp->next_module; - if (sp->priv_addr) - kfree(sp->priv_addr); - kfree(root_speedo_dev); - root_speedo_dev = next_dev; - } -} - -#else /* not MODULE */ - -int eepro100_probe(void) -{ - int cards_found = 0; - - cards_found = eepro100_init(); - - if (speedo_debug > 0 && cards_found) - printk(version); - - return cards_found ? 0 : -ENODEV; -} -#endif /* MODULE */ - -/* - * Local variables: - * compile-command: "gcc -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c eepro100.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" - * SMP-compile-command: "gcc -D__SMP__ -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c eepro100.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" - * c-indent-level: 4 - * c-basic-offset: 4 - * tab-width: 4 - * End: - */ diff --git a/linux/dev/include/linux/malloc.h b/linux/dev/include/linux/malloc.h index 084aa05..50d8114 100644 --- a/linux/dev/include/linux/malloc.h +++ b/linux/dev/include/linux/malloc.h @@ -2,6 +2,7 @@ #define _LINUX_MALLOC_H #include <linux/mm.h> +#include <asm/cache.h> #ifndef MACH_INCLUDE #define kmalloc linux_kmalloc diff --git a/linux/dev/include/linux/modversions.h b/linux/dev/include/linux/modversions.h new file mode 100644 index 0000000..9d841c9 --- /dev/null +++ b/linux/dev/include/linux/modversions.h @@ -0,0 +1 @@ +/* Dummy file. */ diff --git a/linux/src/drivers/net/3c59x.c b/linux/src/drivers/net/3c59x.c index da63188..a6b89cd 100644 --- a/linux/src/drivers/net/3c59x.c +++ b/linux/src/drivers/net/3c59x.c @@ -1,157 +1,181 @@ /* EtherLinkXL.c: A 3Com EtherLink PCI III/XL ethernet driver for linux. */ /* - Written 1996-1999 by Donald Becker. + Written 1996-2003 by Donald Becker. - This software may be used and distributed according to the terms - of the GNU Public License, incorporated herein by reference. + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. This driver is for the 3Com "Vortex" and "Boomerang" series ethercards. Members of the series include Fast EtherLink 3c590/3c592/3c595/3c597 and the EtherLink XL 3c900 and 3c905 cards. - The author may be reached as becker@CESDIS.gsfc.nasa.gov, or C/O - Center of Excellence in Space Data and Information Sciences - Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771 + The original author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 410 Severn Ave., Suite 210 + Annapolis MD 21403 + + Support information and updates are available at + http://www.scyld.com/network/vortex.html */ -static char *version = -"3c59x.c:v0.99L 5/28/99 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/vortex.html\n"; +static const char versionA[] = +"3c59x.c:v0.99Za 4/17/2003 Donald Becker, becker@scyld.com\n"; +static const char versionB[] = +" http://www.scyld.com/network/vortex.html\n"; + +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ + +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; + +/* This driver uses 'options' to pass the media type, full-duplex flag, etc. + See media_tbl[] and the web page for the possible types. + There is no limit on card count, MAX_UNITS limits only module options. */ +#define MAX_UNITS 8 +static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1,}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; + +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ +static int max_interrupt_work = 20; -/* "Knobs" that adjust features and parameters. */ /* Set the copy breakpoint for the copy-only-tiny-frames scheme. Setting to > 1512 effectively disables this feature. */ static const int rx_copybreak = 200; -/* Allow setting MTU to a larger size, bypassing the normal ethernet setup. */ -static const int mtu = 1500; -/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ -static int max_interrupt_work = 20; -/* Put out somewhat more debugging messages. (0: no msg, 1 minimal .. 6). */ -#define vortex_debug debug -#ifdef VORTEX_DEBUG -static int vortex_debug = VORTEX_DEBUG; -#else -static int vortex_debug = 1; -#endif +/* Allow setting MTU to a larger size, bypassing the normal Ethernet setup. */ +static const int mtu = 1500; -/* Some values here only for performance evaluation and path-coverage - debugging. */ -static int rx_nocopy = 0, rx_copy = 0, queued_packet = 0, rx_csumhits; +/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). + Cyclones and later have a 64 or 256 element hash table based on the + Ethernet CRC. */ +static int multicast_filter_limit = 64; + +/* Operational parameters that are set at compile time. */ + +/* Keep the ring sizes a power of two for compile efficiency. + The compiler will convert <unsigned>'%'<2^N> into a bit mask. + Making the Tx ring too large decreases the effectiveness of channel + bonding and packet priority. + Do not increase the Tx ring beyond 256. + Large receive rings waste memory and confound network buffer limits. + These values have been carefully studied: changing these might mask a + problem, it won't fix it. + */ +#define TX_RING_SIZE 16 +#define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */ +#define RX_RING_SIZE 32 -/* A few values that may be tweaked. */ +/* Operational parameters that usually are not changed. */ /* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT (2*HZ) +#define TX_TIMEOUT (6*HZ) -/* Keep the ring sizes a power of two for efficiency. */ -#define TX_RING_SIZE 16 -#define RX_RING_SIZE 32 -#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. The 1536 value is not + a limit, or directly related to MTU, but rather a way to keep a + consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 -#ifndef __OPTIMIZE__ +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) #warning You must compile this file with the correct options! #warning See the last lines of the source file. #error You must compile this driver with "-O". #endif #include <linux/config.h> -#include <linux/version.h> -#ifdef MODULE -#ifdef MODVERSIONS -#include <linux/modversions.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS #endif + +#include <linux/version.h> +#if LINUX_VERSION_CODE < 0x20300 && defined(MODVERSIONS) #include <linux/module.h> +#include <linux/modversions.h> #else -#define MOD_INC_USE_COUNT -#define MOD_DEC_USE_COUNT +#include <linux/modversions.h> +#include <linux/module.h> #endif #include <linux/kernel.h> -#include <linux/sched.h> #include <linux/string.h> #include <linux/timer.h> #include <linux/errno.h> -#include <linux/in.h> #include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else #include <linux/malloc.h> +#endif #include <linux/interrupt.h> #include <linux/pci.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> -#if LINUX_VERSION_CODE < 0x20155 -#include <linux/bios32.h> -#endif -#include <asm/irq.h> /* For NR_IRQS only. */ +#include <asm/irq.h> +#include <asm/byteorder.h> #include <asm/bitops.h> #include <asm/io.h> -/* Kernel compatibility defines, some common to David Hinds' PCMCIA package. - This is only in the support-all-kernels source code. */ +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif -#define RUN_AT(x) (jiffies + (x)) +/* Condensed operations for readability. + Compatibility defines are now in kern_compat.h */ -#include <linux/delay.h> +#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) +#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) -#if (LINUX_VERSION_CODE >= 0x20100) +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) char kernel_version[] = UTS_RELEASE; -#else -#ifndef __alpha__ -#define ioremap(a,b) \ - (((a)<0x100000) ? (void *)((u_long)(a)) : vremap(a,b)) -#define iounmap(v) \ - do { if ((u_long)(v) > 0x100000) vfree(v); } while (0) -#endif -#endif -#if LINUX_VERSION_CODE <= 0x20139 -#define net_device_stats enet_statistics -#define NETSTATS_VER2 -#endif -#if LINUX_VERSION_CODE < 0x20138 -#define test_and_set_bit(val, addr) set_bit(val, addr) -#define le32_to_cpu(val) (val) -#define cpu_to_le32(val) (val) -#endif -#if LINUX_VERSION_CODE < 0x20155 -#define PCI_SUPPORT_VER1 -#else -#define PCI_SUPPORT_VER2 -#endif -#if LINUX_VERSION_CODE < 0x20159 -#define DEV_FREE_SKB(skb) dev_kfree_skb (skb, FREE_WRITE); -#else /* Grrr, incompatible changes should change the name. */ -#define DEV_FREE_SKB(skb) dev_kfree_skb(skb); -#endif -#if ! defined(CAP_NET_ADMIN) -#define capable(CAP_XXX) (suser()) #endif -#if defined(MODULE) && LINUX_VERSION_CODE > 0x20115 -MODULE_AUTHOR("Donald Becker <becker@cesdis.gsfc.nasa.gov>"); -MODULE_DESCRIPTION("3Com 3c590/3c900 series Vortex/Boomerang driver"); +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); +MODULE_DESCRIPTION("3Com EtherLink XL (3c590/3c900 series) driver"); +MODULE_LICENSE("GPL"); MODULE_PARM(debug, "i"); -MODULE_PARM(options, "1-" __MODULE_STRING(8) "i"); -MODULE_PARM(full_duplex, "1-" __MODULE_STRING(8) "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); MODULE_PARM(rx_copybreak, "i"); MODULE_PARM(max_interrupt_work, "i"); -MODULE_PARM(compaq_ioaddr, "i"); -MODULE_PARM(compaq_irq, "i"); -MODULE_PARM(compaq_device_id, "i"); +MODULE_PARM(multicast_filter_limit, "i"); +#ifdef MODULE_PARM_DESC +MODULE_PARM_DESC(debug, "3c59x message level (0-31)"); +MODULE_PARM_DESC(options, "3c59x force fixed media type"); +MODULE_PARM_DESC(full_duplex, + "3c59x set to 1 to force full duplex (deprecated)"); +MODULE_PARM_DESC(rx_copybreak, + "3c59x copy breakpoint for copy-only-tiny-frames"); +MODULE_PARM_DESC(max_interrupt_work, + "3c59x maximum events handled per interrupt"); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast address count before switching to Rx-all-multicast"); #endif /* Operational parameter that usually are not changed. */ -/* The Vortex size is twice that of the original EtherLinkIII series: the - runtime register window, window 1, is now always mapped in. - The Boomerang size is twice as large as the Vortex -- it has additional - bus master control registers. */ -#define VORTEX_TOTAL_SIZE 0x20 -#define BOOMERANG_TOTAL_SIZE 0x40 - /* Set iff a MII transceiver on any interface requires mdio preamble. This only set with the original DP83840 on older 3c905 boards, so the extra code size of a per-interface flag is not worthwhile. */ static char mii_preamble_required = 0; +/* Performance and path-coverage information. */ +static int rx_nocopy = 0, rx_copy = 0, queued_packet = 0, rx_csumhits; + /* Theory of Operation @@ -160,11 +184,10 @@ I. Board Compatibility This device driver is designed for the 3Com FastEtherLink and FastEtherLink XL, 3Com's PCI to 10/100baseT adapters. It also works with the 10Mbs versions of the FastEtherLink cards. The supported product IDs are - 3c590, 3c592, 3c595, 3c597, 3c900, 3c905 +in the pci_tbl[] list. The related ISA 3c515 is supported with a separate driver, 3c515.c, included -with the kernel source or available from - cesdis.gsfc.nasa.gov:/pub/linux/drivers/3c515.html +with the kernel source. II. Board-specific settings @@ -224,83 +247,152 @@ The name "Vortex" is the internal 3Com project name for the PCI ASIC, and the EISA version is called "Demon". According to Terry these names come from rides at the local amusement park. -The new chips support both ethernet (1.5K) and FDDI (4.5K) packet sizes! -This driver only supports ethernet packets because of the skbuff allocation -limit of 4K. +The new chips support both ethernet (1.5K) and FDDI (4.5K) packet sizes. +This driver only supports ethernet packets on some kernels because of the +skbuff allocation limit of 4K. */ -/* This table drives the PCI probe routines. It's mostly boilerplate in all - of the drivers, and will likely be provided by some future kernel. -*/ -enum pci_flags_bit { - PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4, - PCI_ADDR0=0x10<<0, PCI_ADDR1=0x10<<1, PCI_ADDR2=0x10<<2, PCI_ADDR3=0x10<<3, -}; -struct pci_id_info { - const char *name; - u16 vendor_id, device_id, device_id_mask, flags; - int drv_flags, io_size; - struct device *(*probe1)(int pci_bus, int pci_devfn, struct device *dev, - long ioaddr, int irq, int chip_idx, int fnd_cnt); +/* The Vortex size is twice that of the original EtherLinkIII series: the + runtime register window, window 1, is now always mapped in. + The Boomerang size is twice as large as the Vortex -- it has additional + bus master control registers. */ +#define VORTEX_SIZE 0x20 +#define BOOMERANG_SIZE 0x40 +#define CYCLONE_SIZE 0x80 +enum { IS_VORTEX=1, IS_BOOMERANG=2, IS_CYCLONE=0x804, IS_TORNADO=0x08, + HAS_PWR_CTRL=0x10, HAS_MII=0x20, HAS_NWAY=0x40, HAS_CB_FNS=0x80, + EEPROM_8BIT=0x200, INVERT_LED_PWR=0x400, MII_XCVR_PWR=0x4000, + HAS_V2_TX=0x800, WN0_XCVR_PWR=0x1000, }; +/* Base feature sets for the generations. */ +#define FEATURE_BOOMERANG (HAS_MII) /* 905 */ +#define FEATURE_CYCLONE (IS_CYCLONE|HAS_V2_TX) /* 905B */ +#define FEATURE_TORNADO (IS_TORNADO|HAS_NWAY|HAS_V2_TX) /* 905C */ + +static void *vortex_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +static int pwr_event(void *dev_instance, int event); +#ifdef USE_MEM_OPS +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_MEM | PCI_ADDR1) +#else +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_IO | PCI_ADDR0) +#endif -enum { IS_VORTEX=1, IS_BOOMERANG=2, IS_CYCLONE=4, - HAS_PWR_CTRL=0x10, HAS_MII=0x20, HAS_NWAY=0x40, HAS_CB_FNS=0x80, }; -static struct device *vortex_probe1(int pci_bus, int pci_devfn, - struct device *dev, long ioaddr, - int irq, int dev_id, int card_idx); static struct pci_id_info pci_tbl[] = { - {"3c590 Vortex 10Mbps", 0x10B7, 0x5900, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_VORTEX, 32, vortex_probe1}, - {"3c595 Vortex 100baseTx", 0x10B7, 0x5950, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_VORTEX, 32, vortex_probe1}, - {"3c595 Vortex 100baseT4", 0x10B7, 0x5951, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_VORTEX, 32, vortex_probe1}, - {"3c595 Vortex 100base-MII", 0x10B7, 0x5952, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_VORTEX, 32, vortex_probe1}, - {"3Com Vortex", 0x10B7, 0x5900, 0xff00, - PCI_USES_IO|PCI_USES_MASTER, IS_BOOMERANG, 64, vortex_probe1}, - {"3c900 Boomerang 10baseT", 0x10B7, 0x9000, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_BOOMERANG, 64, vortex_probe1}, - {"3c900 Boomerang 10Mbps Combo", 0x10B7, 0x9001, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_BOOMERANG, 64, vortex_probe1}, - {"3c900 Cyclone 10Mbps Combo", 0x10B7, 0x9005, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE, 128, vortex_probe1}, - {"3c900B-FL Cyclone 10base-FL", 0x10B7, 0x900A, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE, 128, vortex_probe1}, - {"3c905 Boomerang 100baseTx", 0x10B7, 0x9050, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_BOOMERANG|HAS_MII, 64, vortex_probe1}, - {"3c905 Boomerang 100baseT4", 0x10B7, 0x9051, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_BOOMERANG|HAS_MII, 64, vortex_probe1}, - {"3c905B Cyclone 100baseTx", 0x10B7, 0x9055, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE|HAS_NWAY, 128, vortex_probe1}, - {"3c905B Cyclone 10/100/BNC", 0x10B7, 0x9058, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE|HAS_NWAY, 128, vortex_probe1}, - {"3c905B-FX Cyclone 100baseFx", 0x10B7, 0x905A, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE, 128, vortex_probe1}, - {"3c905C Tornado", 0x10B7, 0x9200, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE, 128, vortex_probe1}, - {"3c980 Cyclone", 0x10B7, 0x9800, 0xfff0, - PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE, 128, vortex_probe1}, - {"3cSOHO100-TX Hurricane", 0x10B7, 0x7646, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE, 128, vortex_probe1}, - {"3c555 Laptop Hurricane", 0x10B7, 0x5055, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE, 128, vortex_probe1}, - {"3c575 Boomerang CardBus", 0x10B7, 0x5057, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_BOOMERANG|HAS_MII, 64, vortex_probe1}, - {"3CCFE575 Cyclone CardBus", 0x10B7, 0x5157, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE|HAS_NWAY|HAS_CB_FNS, - 128, vortex_probe1}, - {"3CCFE656 Cyclone CardBus", 0x10B7, 0x6560, 0xffff, - PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE|HAS_NWAY|HAS_CB_FNS, - 128, vortex_probe1}, - {"3c575 series CardBus (unknown version)", 0x10B7, 0x5057, 0xf0ff, - PCI_USES_IO|PCI_USES_MASTER, IS_BOOMERANG|HAS_MII, 64, vortex_probe1}, - {"3Com Boomerang (unknown version)", 0x10B7, 0x9000, 0xff00, - PCI_USES_IO|PCI_USES_MASTER, IS_BOOMERANG, 64, vortex_probe1}, + {"3c590 Vortex 10Mbps", { 0x590010B7, 0xffffffff }, + PCI_IOTYPE, VORTEX_SIZE, IS_VORTEX, }, + {"3c595 Vortex 100baseTx", { 0x595010B7, 0xffffffff }, + PCI_IOTYPE, VORTEX_SIZE, IS_VORTEX, }, + {"3c595 Vortex 100baseT4", { 0x595110B7, 0xffffffff }, + PCI_IOTYPE, VORTEX_SIZE, IS_VORTEX, }, + {"3c595 Vortex 100base-MII",{ 0x595210B7, 0xffffffff }, + PCI_IOTYPE, VORTEX_SIZE, IS_VORTEX, }, + /* Change EISA_scan if these move from index 4 and 5. */ + {"3c592 EISA Vortex", { 0x592010B7, 0xffffffff }, + PCI_IOTYPE, VORTEX_SIZE, IS_VORTEX, }, + {"3c597 EISA Vortex", { 0x597010B7, 0xffffffff }, + PCI_IOTYPE, VORTEX_SIZE, IS_VORTEX, }, + {"Vortex (unknown)", { 0x590010B7, 0xff00ffff }, + PCI_IOTYPE, VORTEX_SIZE, IS_VORTEX, }, + {"3c900 Boomerang 10baseT", { 0x900010B7, 0xffffffff }, + PCI_IOTYPE, BOOMERANG_SIZE, IS_BOOMERANG, }, + {"3c900 Boomerang 10Mbps Combo", { 0x900110B7, 0xffffffff }, + PCI_IOTYPE,BOOMERANG_SIZE, IS_BOOMERANG, }, + {"3c900 Cyclone 10Mbps TPO", { 0x900410B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, IS_CYCLONE, }, + {"3c900 Cyclone 10Mbps Combo", { 0x900510B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, IS_CYCLONE, }, + {"3c900 Cyclone 10Mbps TPC", { 0x900610B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, IS_CYCLONE, }, + {"3c900B-FL Cyclone 10base-FL",{ 0x900A10B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, IS_CYCLONE, }, + {"3c905 Boomerang 100baseTx",{ 0x905010B7, 0xffffffff }, + PCI_IOTYPE,BOOMERANG_SIZE, IS_BOOMERANG|HAS_MII, }, + {"3c905 Boomerang 100baseT4",{ 0x905110B7, 0xffffffff }, + PCI_IOTYPE,BOOMERANG_SIZE, IS_BOOMERANG|HAS_MII, }, + {"3c905B Cyclone 100baseTx",{ 0x905510B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, IS_CYCLONE|HAS_NWAY, }, + {"3c905B Cyclone 10/100/BNC",{ 0x905810B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, IS_CYCLONE|HAS_NWAY, }, + {"3c905B-FX Cyclone 100baseFx",{ 0x905A10B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, IS_CYCLONE, }, + {"3c905C Tornado",{ 0x920010B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, FEATURE_TORNADO, }, + {"3c920 Tornado",{ 0x920110B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, FEATURE_TORNADO, }, + {"3c920 series Tornado",{ 0x920010B7, 0xfff0ffff }, + PCI_IOTYPE, CYCLONE_SIZE, FEATURE_TORNADO, }, + {"3c982 Server Tornado",{ 0x980510B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, FEATURE_TORNADO, }, + {"3c980 Cyclone",{ 0x980010B7, 0xfff0ffff }, + PCI_IOTYPE, CYCLONE_SIZE, FEATURE_CYCLONE|HAS_NWAY, }, + {"3cSOHO100-TX Hurricane", { 0x764610B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, FEATURE_CYCLONE, }, + {"3c555 Laptop Hurricane", { 0x505510B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, FEATURE_CYCLONE, }, + {"3c556 Laptop Tornado",{ 0x605510B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, FEATURE_TORNADO|EEPROM_8BIT, }, + {"3c556 series Laptop Tornado",{ 0x605510B7, 0xf0ffffff }, + PCI_IOTYPE, CYCLONE_SIZE, FEATURE_TORNADO|EEPROM_8BIT, }, + {"3c1556B-5 mini-PCI",{ 0x605610B7, 0xffffffff, 0x655610b7, 0xffffffff, }, + PCI_IOTYPE, CYCLONE_SIZE, + FEATURE_TORNADO|EEPROM_8BIT|INVERT_LED_PWR|WN0_XCVR_PWR, }, + {"3c1556B mini-PCI",{ 0x605610B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, + FEATURE_TORNADO|EEPROM_8BIT|HAS_CB_FNS|INVERT_LED_PWR|MII_XCVR_PWR, }, + {"3c1556B series mini-PCI",{ 0x605610B7, 0xf0ffffff }, + PCI_IOTYPE, CYCLONE_SIZE, + FEATURE_TORNADO|EEPROM_8BIT|HAS_CB_FNS|INVERT_LED_PWR|MII_XCVR_PWR, }, + {"3c575 Boomerang CardBus", { 0x505710B7, 0xffffffff }, + PCI_IOTYPE,BOOMERANG_SIZE, IS_BOOMERANG|HAS_MII|EEPROM_8BIT, }, + {"3CCFE575BT Cyclone CardBus",{ 0x515710B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, + FEATURE_CYCLONE | HAS_CB_FNS | EEPROM_8BIT | INVERT_LED_PWR, }, + {"3CCFE575CT Tornado CardBus",{ 0x525710B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, + FEATURE_TORNADO|HAS_CB_FNS|EEPROM_8BIT|MII_XCVR_PWR, }, + {"3CCFE656 Cyclone CardBus",{ 0x656010B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, + IS_CYCLONE|HAS_NWAY|HAS_CB_FNS| INVERT_LED_PWR | MII_XCVR_PWR, }, + {"3CCFE656B Cyclone+Winmodem CardBus",{ 0x656210B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, + FEATURE_CYCLONE/*|HAS_NWAY*/ |HAS_CB_FNS|EEPROM_8BIT|INVERT_LED_PWR|MII_XCVR_PWR, }, + {"3CCFE656C Tornado+Winmodem CardBus",{ 0x656410B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, + (FEATURE_TORNADO & ~HAS_NWAY)|HAS_CB_FNS|EEPROM_8BIT | MII_XCVR_PWR, }, + {"3c450 HomePNA Tornado",{ 0x450010B7, 0xffffffff }, + PCI_IOTYPE, CYCLONE_SIZE, FEATURE_TORNADO, }, + {"3c575 series CardBus (unknown version)", {0x505710B7, 0xf0ffffff }, + PCI_IOTYPE, BOOMERANG_SIZE, IS_BOOMERANG|HAS_MII, }, + {"3Com Boomerang (unknown version)",{ 0x900010B7, 0xff00ffff }, + PCI_IOTYPE, BOOMERANG_SIZE, IS_BOOMERANG, }, {0,}, /* 0 terminated list. */ }; +struct drv_id_info vortex_drv_id = { + "vortex", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_tbl, + vortex_probe1, pwr_event }; + +/* This driver was written to use I/O operations. + However there are performance benefits to using memory operations, so + that mode is now an options. + Compiling for memory ops turns off EISA support. +*/ +#ifdef USE_MEM_OPS +#undef inb +#undef inw +#undef inl +#undef outb +#undef outw +#undef outl +#define inb readb +#define inw readw +#define inl readl +#define outb writeb +#define outw writew +#define outl writel +#endif + /* Operational definitions. These are not used by other compilation units and thus are not exported in a ".h" file. @@ -332,7 +424,9 @@ enum vortex_cmd { /* The SetRxFilter command accepts the following classes: */ enum RxFilter { - RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 }; + RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8, + RxMulticastHash = 0x10, +}; /* Bits in the general status register. */ enum vortex_status { @@ -356,11 +450,7 @@ enum Window0 { Wn0EepromData = 12, /* Window 0: EEPROM results register. */ IntrStatus=0x0E, /* Valid in all windows. */ }; -enum Win0_EEPROM_bits { - EEPROM_Read = 0x80, EEPROM_WRITE = 0x40, EEPROM_ERASE = 0xC0, - EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */ - EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */ -}; + /* EEPROM locations. */ enum eeprom_offset { PhysAddr01=0, PhysAddr23=1, PhysAddr45=2, ModelID=3, @@ -372,34 +462,35 @@ enum Window2 { /* Window 2. */ Wn2_ResetOptions=12, }; enum Window3 { /* Window 3: MAC/config bits. */ - Wn3_Config=0, Wn3_MAC_Ctrl=6, Wn3_Options=8, -}; -union wn3_config { - int i; - struct w3_config_fields { - unsigned int ram_size:3, ram_width:1, ram_speed:2, rom_size:2; - int pad8:8; - unsigned int ram_split:2, pad18:2, xcvr:4, autoselect:1; - int pad24:7; - } u; + Wn3_Config=0, Wn3_MaxPktSize=4, Wn3_MAC_Ctrl=6, Wn3_Options=8, }; enum Window4 { /* Window 4: Xcvr/media bits. */ Wn4_FIFODiag = 4, Wn4_NetDiag = 6, Wn4_PhysicalMgmt=8, Wn4_Media = 10, }; +enum Window5 { + Wn5_TxThreshold = 0, Wn5_RxFilter = 8, +}; enum Win4_Media_bits { Media_SQE = 0x0008, /* Enable SQE error counting for AUI. */ Media_10TP = 0x00C0, /* Enable link beat and jabber for 10baseT. */ Media_Lnk = 0x0080, /* Enable just link beat for 100TX/100FX. */ Media_LnkBeat = 0x0800, }; -enum Window7 { /* Window 7: Bus Master control. */ +enum Window7 { + /* Bus Master control on Vortex. */ Wn7_MasterAddr = 0, Wn7_MasterLen = 6, Wn7_MasterStatus = 12, + /* On Cyclone and later, VLAN and PowerMgt control. */ + Wn7_VLAN_Mask = 0, Wn7_VLAN_EtherType = 4, Wn7_PwrMgmtEvent = 12, }; -/* Boomerang bus master control registers. */ + +/* Boomerang and Cyclone bus master control registers. */ enum MasterCtrl { PktStatus = 0x20, DownListPtr = 0x24, FragAddr = 0x28, FragLen = 0x2c, - TxFreeThreshold = 0x2f, UpPktStatus = 0x30, UpListPtr = 0x38, + DownPollRate = 0x2d, TxFreeThreshold = 0x2f, + UpPktStatus = 0x30, UpListPtr = 0x38, + /* Cyclone+. */ + TxPktID=0x18, RxPriorityThresh = 0x3c, }; /* The Rx and Tx descriptor lists. @@ -429,14 +520,16 @@ struct boom_tx_desc { /* Values for the Tx status entry. */ enum tx_desc_status { - CRCDisable=0x2000, TxDComplete=0x8000, + CRCDisable=0x2000, TxIntrDnComplete=0x8000, TxDownComplete=0x10000, AddIPChksum=0x02000000, AddTCPChksum=0x04000000, AddUDPChksum=0x08000000, + TxNoRoundup=0x10000000, /* HAS_V2_TX should not word-pad packet. */ TxIntrUploaded=0x80000000, /* IRQ when in FIFO, but maybe not sent. */ }; /* Chip features we care about in vp->capabilities, read from the EEPROM. */ -enum ChipCaps { CapBusMaster=0x20, CapPwrMgmt=0x2000 }; +enum ChipCaps { CapBusMaster=0x20, CapNoTxLength=0x0200, CapPwrMgmt=0x2000 }; +#define PRIV_ALIGN 15 /* Required alignment mask */ struct vortex_private { /* The Rx and Tx rings should be quad-word-aligned. */ struct boom_rx_desc rx_ring[RX_RING_SIZE]; @@ -444,32 +537,46 @@ struct vortex_private { /* The addresses of transmit- and receive-in-place skbuffs. */ struct sk_buff* rx_skbuff[RX_RING_SIZE]; struct sk_buff* tx_skbuff[TX_RING_SIZE]; - struct device *next_module; + struct net_device *next_module; void *priv_addr; - unsigned int cur_rx, cur_tx; /* The next free ring entry */ - unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */ - struct net_device_stats stats; + /* Keep the Rx and Tx variables grouped on their own cache lines. */ + struct boom_rx_desc *rx_head_desc; + unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ + unsigned int rx_buf_sz; /* Based on MTU+slack. */ + int rx_copybreak; + + struct boom_tx_desc *tx_desc_tail; struct sk_buff *tx_skb; /* Packet being eaten by bus master ctrl. */ + unsigned int cur_tx, dirty_tx; + unsigned int tx_full:1, restart_tx:1; - /* PCI configuration space information. */ - u8 pci_bus, pci_devfn; /* PCI bus location, for power management. */ + long last_reset; + spinlock_t window_lock; + struct net_device_stats stats; char *cb_fn_base; /* CardBus function status addr space. */ - int chip_id; + int msg_level; + int chip_id, drv_flags; + struct pci_dev *pci_dev; /* PCI configuration space information. */ /* The remainder are related to chip state, mostly media selection. */ - unsigned long in_interrupt; + int multicast_filter_limit; + u32 mc_filter[8]; + int max_interrupt_work; + int rx_mode; struct timer_list timer; /* Media selection timer. */ int options; /* User-settable misc. driver options. */ unsigned int media_override:4, /* Passed-in media type. */ default_media:4, /* Read from the EEPROM/Wn3_Config. */ - full_duplex:1, force_fd:1, autoselect:1, + full_duplex:1, medialock:1, autoselect:1, bus_master:1, /* Vortex can only do a fragment bus-m. */ full_bus_master_tx:1, full_bus_master_rx:2, /* Boomerang */ hw_csums:1, /* Has hardware checksums. */ - tx_full:1; + restore_intr_mask:1, + polling:1; u16 status_enable; u16 intr_enable; u16 available_media; /* From Wn3_Options. */ + u16 wn3_mac_ctrl; /* Current settings. */ u16 capabilities, info1, info2; /* Various, from EEPROM. */ u16 advertising; /* NWay media advertisement */ unsigned char phys[2]; /* MII device addresses. */ @@ -503,62 +610,60 @@ static struct media_table { { "Default", 0, 0xFF, XCVR_10baseT, 10000}, }; -#ifndef CARDBUS -static int vortex_scan(struct device *dev, struct pci_id_info pci_tbl[]); +#if ! defined(CARDBUS) && ! defined(USE_MEM_OPS) +static int eisa_scan(struct net_device *dev); #endif -static int vortex_open(struct device *dev); +static int vortex_open(struct net_device *dev); +static void set_media_type(struct net_device *dev); +static void activate_xcvr(struct net_device *dev); +static void start_operation(struct net_device *dev); +static void start_operation1(struct net_device *dev); static void mdio_sync(long ioaddr, int bits); static int mdio_read(long ioaddr, int phy_id, int location); static void mdio_write(long ioaddr, int phy_id, int location, int value); static void vortex_timer(unsigned long arg); -static int vortex_start_xmit(struct sk_buff *skb, struct device *dev); -static int boomerang_start_xmit(struct sk_buff *skb, struct device *dev); -static int vortex_rx(struct device *dev); -static int boomerang_rx(struct device *dev); +static void vortex_tx_timeout(struct net_device *dev); +static int vortex_start_xmit(struct sk_buff *skb, struct net_device *dev); +static int boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev); +static int vortex_rx(struct net_device *dev); +static int boomerang_rx(struct net_device *dev); static void vortex_interrupt(int irq, void *dev_id, struct pt_regs *regs); -static int vortex_close(struct device *dev); -static void update_stats(long ioaddr, struct device *dev); -static struct net_device_stats *vortex_get_stats(struct device *dev); -static void set_rx_mode(struct device *dev); -static int vortex_ioctl(struct device *dev, struct ifreq *rq, int cmd); -static void acpi_wake(int pci_bus, int pci_devfn); -static void acpi_set_WOL(struct device *dev); +static int vortex_close(struct net_device *dev); +static void update_stats(long ioaddr, struct net_device *dev); +static struct net_device_stats *vortex_get_stats(struct net_device *dev); +static void set_rx_mode(struct net_device *dev); +static int vortex_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +#if defined(NO_PCI) +#define acpi_set_WOL(dev) do {} while(0); +#define acpi_wake(pci_dev) do {} while(0); +#define acpi_set_pwr_state(pci_dev, state) do {} while(0); +#else +static void acpi_set_WOL(struct net_device *dev); +#endif -/* This driver uses 'options' to pass the media type, full-duplex flag, etc. */ -/* Option count limit only -- unlimited interfaces are supported. */ -#define MAX_UNITS 8 -static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1,}; -static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; /* A list of all installed Vortex devices, for removing the driver module. */ -static struct device *root_vortex_dev = NULL; +static struct net_device *root_vortex_dev = NULL; -#ifdef MODULE -#ifndef CARDBUS -/* Variables to work-around the Compaq PCI BIOS32 problem. */ -static int compaq_ioaddr = 0, compaq_irq = 0, compaq_device_id = 0x5900; -#endif -#ifdef CARDBUS +#if defined(MODULE) && defined(CARDBUS) #include <pcmcia/driver_ops.h> static dev_node_t *vortex_attach(dev_locator_t *loc) { - u16 dev_id, vendor_id; - u32 io; + u32 io, pci_id; u8 bus, devfn, irq; - struct device *dev; + struct net_device *dev; int chip_idx; if (loc->bus != LOC_PCI) return NULL; bus = loc->b.pci.bus; devfn = loc->b.pci.devfn; pcibios_read_config_dword(bus, devfn, PCI_BASE_ADDRESS_0, &io); pcibios_read_config_byte(bus, devfn, PCI_INTERRUPT_LINE, &irq); - pcibios_read_config_word(bus, devfn, PCI_VENDOR_ID, &vendor_id); - pcibios_read_config_word(bus, devfn, PCI_DEVICE_ID, &dev_id); - printk(KERN_INFO "vortex_attach(bus %d, function %d, device %4.4x)\n", - bus, devfn, dev_id); + pcibios_read_config_dword(bus, devfn, PCI_VENDOR_ID, &pci_id); + printk(KERN_INFO "vortex_attach(bus %d, function %d, device %8.8x)\n", + bus, devfn, pci_id); io &= ~3; if (io == 0 || irq == 0) { printk(KERN_ERR "The 3Com CardBus Ethernet interface was not " @@ -566,17 +671,16 @@ static dev_node_t *vortex_attach(dev_locator_t *loc) io == 0 ? "I/O address" : "IRQ"); return NULL; } - for (chip_idx = 0; pci_tbl[chip_idx].vendor_id; chip_idx++) - if (vendor_id == pci_tbl[chip_idx].vendor_id - && (dev_id & pci_tbl[chip_idx].device_id_mask) == - pci_tbl[chip_idx].device_id) + for (chip_idx = 0; pci_tbl[chip_idx].id.pci; chip_idx++) + if ((pci_id & pci_tbl[chip_idx].id.pci_mask) == + pci_tbl[chip_idx].id.pci) break; - if (pci_tbl[chip_idx].vendor_id == 0) { /* Compiled out! */ - printk(KERN_INFO "Unable to match chip type %4.4x %4.4x in " - "vortex_attach().\n", vendor_id, dev_id); + if (pci_tbl[chip_idx].id.pci == 0) { /* Compiled out! */ + printk(KERN_INFO "Unable to match chip type %8.8x in " + "vortex_attach().\n", pci_id); return NULL; } - dev = vortex_probe1(bus, devfn, NULL, io, irq, chip_idx, MAX_UNITS+1); + dev = vortex_probe1(pci_find_slot(bus, devfn), NULL, io, irq, chip_idx, MAX_UNITS+1); if (dev) { dev_node_t *node = kmalloc(sizeof(dev_node_t), GFP_KERNEL); strcpy(node->dev_name, dev->name); @@ -590,17 +694,17 @@ static dev_node_t *vortex_attach(dev_locator_t *loc) static void vortex_detach(dev_node_t *node) { - struct device **devp, **next; - printk(KERN_INFO "vortex_detach(%s)\n", node->dev_name); + struct net_device **devp, **next; + printk(KERN_DEBUG "vortex_detach(%s)\n", node->dev_name); for (devp = &root_vortex_dev; *devp; devp = next) { next = &((struct vortex_private *)(*devp)->priv)->next_module; if (strcmp((*devp)->name, node->dev_name) == 0) break; } if (*devp) { - struct device *dev = *devp; + struct net_device *dev = *devp; struct vortex_private *vp = dev->priv; if (dev->flags & IFF_UP) - vortex_close(dev); + dev_close(dev); dev->flags &= ~(IFF_UP|IFF_RUNNING); unregister_netdev(dev); if (vp->cb_fn_base) iounmap(vp->cb_fn_base); @@ -616,143 +720,68 @@ struct driver_operations vortex_ops = { "3c575_cb", vortex_attach, NULL, NULL, vortex_detach }; -#endif /* Cardbus support */ +#endif /* Old-style Cardbus module support */ + +#if defined(MODULE) || (LINUX_VERSION_CODE >= 0x020400) +#if ! defined(MODULE) /* Must be a 2.4 kernel */ +module_init(init_module); +module_exit(cleanup_module); +#endif int init_module(void) { - if (vortex_debug) - printk(KERN_INFO "%s", version); + printk(KERN_INFO "%s" KERN_INFO "%s", versionA, versionB); #ifdef CARDBUS register_driver(&vortex_ops); return 0; #else - return vortex_scan(0, pci_tbl); +#ifndef USE_MEM_OPS + /* This is not quite correct, but both EISA and PCI cards is unlikely. */ + if (eisa_scan(0) >= 0) + return 0; +#if defined(NO_PCI) + return 0; +#endif +#endif + + return pci_drv_register(&vortex_drv_id, NULL); #endif } #else -int tc59x_probe(struct device *dev) +int tc59x_probe(struct net_device *dev) { - static int did_version = -1; - if (++did_version <= 0) - printk(KERN_INFO "%s", version); - return vortex_scan(dev, pci_tbl); + int retval = -ENODEV; + + /* Allow an EISA-only driver. */ +#if ! defined(NO_PCI) + if (pci_drv_register(&vortex_drv_id, dev) >= 0) { + retval = 0; + dev = 0; + } +#endif +#ifndef USE_MEM_OPS + if (eisa_scan(dev) >= 0) + retval = 0; +#endif + if (retval >= 0) + printk(KERN_INFO "%s" KERN_INFO "%s", versionA, versionB); + return retval; } #endif /* not MODULE */ -#ifndef CARDBUS -static int vortex_scan(struct device *dev, struct pci_id_info pci_tbl[]) +#if ! defined(CARDBUS) && ! defined(USE_MEM_OPS) +static int eisa_scan(struct net_device *dev) { int cards_found = 0; - /* Allow an EISA-only driver. */ -#if defined(CONFIG_PCI) || (defined(MODULE) && !defined(NO_PCI)) - /* Ideally we would detect all cards in slot order. That would - be best done a central PCI probe dispatch, which wouldn't work - well with the current structure. So instead we detect 3Com cards - in slot order. */ - if (pcibios_present()) { - static int pci_index = 0; - unsigned char pci_bus, pci_device_fn; - - for (;pci_index < 0xff; pci_index++) { - u16 vendor, device, pci_command, new_command; - int chip_idx, irq; - long ioaddr; - - if (pcibios_find_class (PCI_CLASS_NETWORK_ETHERNET << 8, pci_index, - &pci_bus, &pci_device_fn) - != PCIBIOS_SUCCESSFUL) - break; - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_VENDOR_ID, &vendor); - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_DEVICE_ID, &device); - for (chip_idx = 0; pci_tbl[chip_idx].vendor_id; chip_idx++) - if (vendor == pci_tbl[chip_idx].vendor_id - && (device & pci_tbl[chip_idx].device_id_mask) == - pci_tbl[chip_idx].device_id) - break; - if (pci_tbl[chip_idx].vendor_id == 0) /* Compiled out! */ - continue; - - /* The Cyclone requires config space re-write if powered down. */ - acpi_wake(pci_bus, pci_device_fn); - - { -#if LINUX_VERSION_CODE >= 0x20155 - struct pci_dev *pdev = pci_find_slot(pci_bus, pci_device_fn); - ioaddr = pdev->base_address[0] & ~3; - irq = pdev->irq; -#else - u32 pci_ioaddr; - u8 pci_irq_line; - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_INTERRUPT_LINE, &pci_irq_line); - pcibios_read_config_dword(pci_bus, pci_device_fn, - PCI_BASE_ADDRESS_0, &pci_ioaddr); - ioaddr = pci_ioaddr & ~3;; - irq = pci_irq_line; -#endif - } - - if (ioaddr == 0) { - printk(KERN_WARNING " A 3Com network adapter has been found, " - "however it has not been assigned an I/O address.\n" - " You may need to power-cycle the machine for this " - "device to work!\n"); - continue; - } - - if (check_region(ioaddr, pci_tbl[chip_idx].io_size)) - continue; - - /* Activate the card. */ - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, &pci_command); - new_command = pci_command | PCI_COMMAND_MASTER|PCI_COMMAND_IO; - if (pci_command != new_command) { - printk(KERN_INFO " The PCI BIOS has not enabled the device " - "at %d/%d. Updating PCI command %4.4x->%4.4x.\n", - pci_bus, pci_device_fn, pci_command, new_command); - pcibios_write_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, new_command); - } - - dev = vortex_probe1(pci_bus, pci_device_fn, dev, ioaddr, irq, - chip_idx, cards_found); - - if (dev) { - /* Get and check the latency values. On the 3c590 series - the latency timer must be set to the maximum value to avoid - data corruption that occurs when the timer expires during - a transfer -- a bug in the Vortex chip only. */ - u8 pci_latency; - u8 new_latency = (device & 0xff00) == 0x5900 ? 248 : 32; - - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, &pci_latency); - if (pci_latency < new_latency) { - printk(KERN_INFO "%s: Overriding PCI latency" - " timer (CFLT) setting of %d, new value is %d.\n", - dev->name, pci_latency, new_latency); - pcibios_write_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, new_latency); - } - dev = 0; - cards_found++; - } - } - } -#endif /* NO_PCI */ - - /* Now check all slots of the EISA bus. */ + /* Check the slots of the EISA bus. */ if (EISA_bus) { static long ioaddr = 0x1000; for ( ; ioaddr < 0x9000; ioaddr += 0x1000) { int device_id; - if (check_region(ioaddr, VORTEX_TOTAL_SIZE)) + if (check_region(ioaddr, VORTEX_SIZE)) continue; /* Check the standard EISA ID register for an encoded '3Com'. */ if (inw(ioaddr + 0xC80) != 0x6d50) @@ -761,65 +790,100 @@ static int vortex_scan(struct device *dev, struct pci_id_info pci_tbl[]) device_id = (inb(ioaddr + 0xC82)<<8) + inb(ioaddr + 0xC83); if ((device_id & 0xFF00) != 0x5900) continue; - vortex_probe1(0, 0, dev, ioaddr, inw(ioaddr + 0xC88) >> 12, - 4, cards_found); + vortex_probe1(0, dev, ioaddr, inw(ioaddr + 0xC88) >> 12, + (device_id & 0xfff0) == 0x5970 ? 5 : 4, cards_found); dev = 0; cards_found++; } } -#ifdef MODULE - /* Special code to work-around the Compaq PCI BIOS32 problem. */ - if (compaq_ioaddr) { - vortex_probe1(0, 0, dev, compaq_ioaddr, compaq_irq, - compaq_device_id, cards_found++); - dev = 0; - } -#endif - return cards_found ? 0 : -ENODEV; } #endif /* ! Cardbus */ -static struct device *vortex_probe1(int pci_bus, int pci_devfn, - struct device *dev, long ioaddr, - int irq, int chip_idx, int card_idx) +static int do_eeprom_op(long ioaddr, int ee_cmd) +{ + int timer; + + outw(ee_cmd, ioaddr + Wn0EepromCmd); + /* Wait for the read to take place, worst-case 162 us. */ + for (timer = 1620; timer >= 0; timer--) { + if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0) + break; + } + return inw(ioaddr + Wn0EepromData); +} + +static void *vortex_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt) { + struct net_device *dev; struct vortex_private *vp; + void *priv_mem; int option; unsigned int eeprom[0x40], checksum = 0; /* EEPROM contents */ + int ee_read_cmd; + int drv_flags = pci_tbl[chip_idx].drv_flags; int i; - dev = init_etherdev(dev, 0); + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; + +#if ! defined(NO_PCI) + /* Check the PCI latency value. On the 3c590 series the latency timer + must be set to the maximum value to avoid data corruption that occurs + when the timer expires during a transfer. This bug exists the Vortex + chip only. */ + if (pdev) { + u8 pci_latency; + u8 new_latency = (drv_flags & IS_VORTEX) ? 248 : 32; + + pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency); + if (pci_latency < new_latency) { + printk(KERN_INFO "%s: Overriding PCI latency" + " timer (CFLT) setting of %d, new value is %d.\n", + dev->name, pci_latency, new_latency); + pci_write_config_byte(pdev, PCI_LATENCY_TIMER, new_latency); + } + } +#endif printk(KERN_INFO "%s: 3Com %s at 0x%lx, ", dev->name, pci_tbl[chip_idx].name, ioaddr); + /* Make certain elements e.g. descriptor lists are aligned. */ + priv_mem = kmalloc(sizeof(*vp) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) { + printk(" INTERFACE MEMORY ALLOCATION FAILURE.\n"); + return NULL; + } + dev->base_addr = ioaddr; dev->irq = irq; dev->mtu = mtu; - /* Make certain the descriptor lists are aligned. */ - { - void *mem = kmalloc(sizeof(*vp) + 15, GFP_KERNEL); - vp = (void *)(((long)mem + 15) & ~15); - vp->priv_addr = mem; - } + dev->priv = vp = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); memset(vp, 0, sizeof(*vp)); - dev->priv = vp; + vp->priv_addr = priv_mem; vp->next_module = root_vortex_dev; root_vortex_dev = dev; vp->chip_id = chip_idx; - vp->pci_bus = pci_bus; - vp->pci_devfn = pci_devfn; + vp->pci_dev = pdev; + vp->drv_flags = drv_flags; + vp->msg_level = (1 << debug) - 1; + vp->rx_copybreak = rx_copybreak; + vp->max_interrupt_work = max_interrupt_work; + vp->multicast_filter_limit = multicast_filter_limit; /* The lower four bits are the media type. */ if (dev->mem_start) option = dev->mem_start; - else if (card_idx < MAX_UNITS) - option = options[card_idx]; + else if (find_cnt < MAX_UNITS) + option = options[find_cnt]; else option = -1; @@ -832,28 +896,30 @@ static struct device *vortex_probe1(int pci_bus, int pci_devfn, vp->full_duplex = 0; vp->bus_master = 0; } - if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) + if (find_cnt < MAX_UNITS && full_duplex[find_cnt] > 0) vp->full_duplex = 1; - vp->force_fd = vp->full_duplex; vp->options = option; /* Read the station address from the EEPROM. */ EL3WINDOW(0); + /* Figure out the size and offset of the EEPROM table. + This is complicated by potential discontiguous address bits. */ + + /* Locate the opcode bits, 0xC0 or 0x300. */ + outw(0x5555, ioaddr + Wn0EepromData); + ee_read_cmd = do_eeprom_op(ioaddr, 0x80) == 0x5555 ? 0x200 : 0x80; + /* Locate the table base for CardBus cards. */ + if (do_eeprom_op(ioaddr, ee_read_cmd + 0x37) == 0x6d50) + ee_read_cmd += 0x30; + for (i = 0; i < 0x40; i++) { - int timer; -#ifdef CARDBUS - outw(0x230 + i, ioaddr + Wn0EepromCmd); -#else - outw(EEPROM_Read + i, ioaddr + Wn0EepromCmd); -#endif - /* Pause for at least 162 us. for the read to take place. */ - for (timer = 10; timer >= 0; timer--) { - udelay(162); - if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0) - break; + int cmd_and_addr = ee_read_cmd + i; + if (ee_read_cmd == 0xB0) { /* Correct for discontinuity. */ + int offset = 0x30 + i; + cmd_and_addr = 0x80 + (offset & 0x3f) + ((offset<<2) & 0x0f00); } - eeprom[i] = inw(ioaddr + Wn0EepromData); + eeprom[i] = do_eeprom_op(ioaddr, cmd_and_addr); } for (i = 0; i < 0x18; i++) checksum ^= eeprom[i]; @@ -863,7 +929,7 @@ static struct device *vortex_probe1(int pci_bus, int pci_devfn, checksum ^= eeprom[i++]; checksum = (checksum ^ (checksum >> 8)) & 0xff; } - if (checksum != 0x00) + if (checksum != 0x00 && !(drv_flags & IS_TORNADO)) printk(" ***INVALID CHECKSUM %4.4x*** ", checksum); for (i = 0; i < 3; i++) @@ -874,27 +940,22 @@ static struct device *vortex_probe1(int pci_bus, int pci_devfn, for (i = 0; i < 6; i++) outb(dev->dev_addr[i], ioaddr + i); -#ifdef __sparc__ - printk(", IRQ %s\n", __irq_itoa(dev->irq)); -#else printk(", IRQ %d\n", dev->irq); /* Tell them about an invalid IRQ. */ - if (vortex_debug && (dev->irq <= 0 || dev->irq >= NR_IRQS)) + if (dev->irq <= 0) printk(KERN_WARNING " *** Warning: IRQ %d is unlikely to work! ***\n", dev->irq); -#endif - if (pci_tbl[vp->chip_id].drv_flags & HAS_CB_FNS) { +#if ! defined(NO_PCI) + if (drv_flags & HAS_CB_FNS) { u32 fn_st_addr; /* Cardbus function status space */ - pcibios_read_config_dword(pci_bus, pci_devfn, PCI_BASE_ADDRESS_2, - &fn_st_addr); + pci_read_config_dword(pdev, PCI_BASE_ADDRESS_2, &fn_st_addr); if (fn_st_addr) vp->cb_fn_base = ioremap(fn_st_addr & ~3, 128); - printk("%s: CardBus functions mapped %8.8x->%p (PCMCIA committee" - " brain-damage).\n", dev->name, fn_st_addr, vp->cb_fn_base); - EL3WINDOW(2); - outw(0x10 | inw(ioaddr + Wn2_ResetOptions), ioaddr + Wn2_ResetOptions); + printk(KERN_INFO "%s: CardBus functions mapped %8.8x->%p.\n", + dev->name, fn_st_addr, vp->cb_fn_base); } +#endif /* Extract our information from the EEPROM data. */ vp->info1 = eeprom[13]; @@ -903,27 +964,31 @@ static struct device *vortex_probe1(int pci_bus, int pci_devfn, if (vp->info1 & 0x8000) vp->full_duplex = 1; + if (vp->full_duplex) + vp->medialock = 1; + + /* Turn on the transceiver. */ + activate_xcvr(dev); { char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"}; - union wn3_config config; + int i_cfg; EL3WINDOW(3); vp->available_media = inw(ioaddr + Wn3_Options); if ((vp->available_media & 0xff) == 0) /* Broken 3c916 */ vp->available_media = 0x40; - config.i = inl(ioaddr + Wn3_Config); - if (vortex_debug > 1) - printk(KERN_DEBUG " Internal config register is %4.4x, " - "transceivers %#x.\n", config.i, inw(ioaddr + Wn3_Options)); - printk(KERN_INFO " %dK %s-wide RAM %s Rx:Tx split, %s%s interface.\n", - 8 << config.u.ram_size, - config.u.ram_width ? "word" : "byte", - ram_split[config.u.ram_split], - config.u.autoselect ? "autoselect/" : "", - config.u.xcvr > XCVR_ExtMII ? "<invalid transceiver>" : - media_tbl[config.u.xcvr].name); - vp->default_media = config.u.xcvr; - vp->autoselect = config.u.autoselect; + i_cfg = inl(ioaddr + Wn3_Config); /* Internal Configuration */ + vp->default_media = (i_cfg >> 20) & 15; + if (vp->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG " Internal config register is %8.8x, " + "transceivers %#x.\n", i_cfg, inw(ioaddr + Wn3_Options)); + printk(KERN_INFO " %dK buffer %s Rx:Tx split, %s%s interface.\n", + 8 << (i_cfg & 7), + ram_split[(i_cfg >> 16) & 3], + i_cfg & 0x01000000 ? "autoselect/" : "", + vp->default_media > XCVR_ExtMII ? "<invalid transceiver>" : + media_tbl[vp->default_media].name); + vp->autoselect = i_cfg & 0x01000000 ? 1 : 0; } if (vp->media_override != 7) { @@ -933,16 +998,17 @@ static struct device *vortex_probe1(int pci_bus, int pci_devfn, } else dev->if_port = vp->default_media; - if (dev->if_port == XCVR_MII || dev->if_port == XCVR_NWAY) { + if ((vp->available_media & 0x41) || (drv_flags & HAS_NWAY) || + dev->if_port == XCVR_MII || dev->if_port == XCVR_NWAY) { int phy, phy_idx = 0; EL3WINDOW(4); mii_preamble_required++; - mii_preamble_required++; + mdio_sync(ioaddr, 32); mdio_read(ioaddr, 24, 1); for (phy = 1; phy <= 32 && phy_idx < sizeof(vp->phys); phy++) { int mii_status, phyx = phy & 0x1f; mii_status = mdio_read(ioaddr, phyx, 1); - if (mii_status && mii_status != 0xffff) { + if ((mii_status & 0xf800) && mii_status != 0xffff) { vp->phys[phy_idx++] = phyx; printk(KERN_INFO " MII transceiver found at address %d," " status %4x.\n", phyx, mii_status); @@ -955,6 +1021,12 @@ static struct device *vortex_probe1(int pci_bus, int pci_devfn, printk(KERN_WARNING" ***WARNING*** No MII transceivers found!\n"); vp->phys[0] = 24; } else { + if (mii_preamble_required == 0 && + mdio_read(ioaddr, vp->phys[0], 1) == 0) { + printk(KERN_INFO "%s: MII transceiver has preamble bug.\n", + dev->name); + mii_preamble_required = 1; + } vp->advertising = mdio_read(ioaddr, vp->phys[0], 4); if (vp->full_duplex) { /* Only advertise the FD media types. */ @@ -962,14 +1034,14 @@ static struct device *vortex_probe1(int pci_bus, int pci_devfn, mdio_write(ioaddr, vp->phys[0], 4, vp->advertising); } } + } else { + /* We will emulate MII management. */ + vp->phys[0] = 32; } - if (vp->capabilities & CapPwrMgmt) - acpi_set_WOL(dev); - if (vp->capabilities & CapBusMaster) { vp->full_bus_master_tx = 1; - printk(KERN_INFO" Enabling bus-master transmits and %s receives.\n", + printk(KERN_INFO" Using bus-master transmits and %s receives.\n", (vp->info2 & 1) ? "early" : "whole-frame" ); vp->full_bus_master_rx = (vp->info2 & 1) ? 1 : 2; } @@ -989,29 +1061,27 @@ static struct device *vortex_probe1(int pci_bus, int pci_devfn, } -static int -vortex_open(struct device *dev) +static int vortex_open(struct net_device *dev) { - long ioaddr = dev->base_addr; struct vortex_private *vp = (struct vortex_private *)dev->priv; - union wn3_config config; + long ioaddr = dev->base_addr; int i; - /* Should be if(HAS_ACPI) */ - acpi_wake(vp->pci_bus, vp->pci_devfn); + MOD_INC_USE_COUNT; - /* Before initializing select the active media port. */ - EL3WINDOW(3); - config.i = inl(ioaddr + Wn3_Config); + acpi_wake(vp->pci_dev); + vp->window_lock = SPIN_LOCK_UNLOCKED; + activate_xcvr(dev); + /* Before initializing select the active media port. */ if (vp->media_override != 7) { - if (vortex_debug > 1) + if (vp->msg_level & NETIF_MSG_LINK) printk(KERN_INFO "%s: Media override to transceiver %d (%s).\n", dev->name, vp->media_override, media_tbl[vp->media_override].name); dev->if_port = vp->media_override; } else if (vp->autoselect) { - if (pci_tbl[vp->chip_id].drv_flags & HAS_NWAY) + if (vp->drv_flags & HAS_NWAY) dev->if_port = XCVR_NWAY; else { /* Find first available media type, starting with 100baseTx. */ @@ -1022,88 +1092,39 @@ vortex_open(struct device *dev) } else dev->if_port = vp->default_media; - init_timer(&vp->timer); - vp->timer.expires = RUN_AT(media_tbl[dev->if_port].wait); - vp->timer.data = (unsigned long)dev; - vp->timer.function = &vortex_timer; /* timer handler */ - add_timer(&vp->timer); - - if (vortex_debug > 1) - printk(KERN_DEBUG "%s: Initial media type %s.\n", - dev->name, media_tbl[dev->if_port].name); - - vp->full_duplex = vp->force_fd; - config.u.xcvr = dev->if_port; - if ( ! (pci_tbl[vp->chip_id].drv_flags & HAS_NWAY)) - outl(config.i, ioaddr + Wn3_Config); - - if (dev->if_port == XCVR_MII || dev->if_port == XCVR_NWAY) { - int mii_reg1, mii_reg5; - EL3WINDOW(4); - /* Read BMSR (reg1) only to clear old status. */ - mii_reg1 = mdio_read(ioaddr, vp->phys[0], 1); - mii_reg5 = mdio_read(ioaddr, vp->phys[0], 5); - if (mii_reg5 == 0xffff || mii_reg5 == 0x0000) - ; /* No MII device or no link partner report */ - else if ((mii_reg5 & 0x0100) != 0 /* 100baseTx-FD */ - || (mii_reg5 & 0x00C0) == 0x0040) /* 10T-FD, but not 100-HD */ - vp->full_duplex = 1; - if (vortex_debug > 1) - printk(KERN_INFO "%s: MII #%d status %4.4x, link partner capability %4.4x," - " setting %s-duplex.\n", dev->name, vp->phys[0], - mii_reg1, mii_reg5, vp->full_duplex ? "full" : "half"); - EL3WINDOW(3); - } - - /* Set the full-duplex bit. */ - outb(((vp->info1 & 0x8000) || vp->full_duplex ? 0x20 : 0) | - (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl); - - if (vortex_debug > 1) { - printk(KERN_DEBUG "%s: vortex_open() InternalConfig %8.8x.\n", - dev->name, config.i); - } + if (! vp->medialock) + vp->full_duplex = 0; - outw(TxReset, ioaddr + EL3_CMD); - for (i = 2000; i >= 0 ; i--) - if ( ! (inw(ioaddr + EL3_STATUS) & CmdInProgress)) - break; + vp->status_enable = SetStatusEnb | HostError|IntReq|StatsFull|TxComplete| + (vp->full_bus_master_tx ? DownComplete : TxAvailable) | + (vp->full_bus_master_rx ? UpComplete : RxComplete) | + (vp->bus_master ? DMADone : 0); + vp->intr_enable = SetIntrEnb | IntLatch | TxAvailable | RxComplete | + StatsFull | HostError | TxComplete | IntReq + | (vp->bus_master ? DMADone : 0) | UpComplete | DownComplete; - outw(RxReset, ioaddr + EL3_CMD); - /* Wait a few ticks for the RxReset command to complete. */ - for (i = 2000; i >= 0 ; i--) - if ( ! (inw(ioaddr + EL3_STATUS) & CmdInProgress)) - break; + if (vp->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Initial media type %s %s-duplex.\n", + dev->name, media_tbl[dev->if_port].name, + vp->full_duplex ? "full":"half"); - outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD); + set_media_type(dev); + start_operation(dev); /* Use the now-standard shared IRQ implementation. */ if (request_irq(dev->irq, &vortex_interrupt, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; return -EAGAIN; } - if (vortex_debug > 1) { + spin_lock(&vp->window_lock); + + if (vp->msg_level & NETIF_MSG_IFUP) { EL3WINDOW(4); printk(KERN_DEBUG "%s: vortex_open() irq %d media status %4.4x.\n", dev->name, dev->irq, inw(ioaddr + Wn4_Media)); } - /* Set the station address and mask in window 2 each time opened. */ - EL3WINDOW(2); - for (i = 0; i < 6; i++) - outb(dev->dev_addr[i], ioaddr + i); - for (; i < 12; i+=2) - outw(0, ioaddr + i); - - if (dev->if_port == XCVR_10base2) - /* Start the thinnet transceiver. We should really wait 50ms...*/ - outw(StartCoax, ioaddr + EL3_CMD); - if (dev->if_port != XCVR_NWAY) { - EL3WINDOW(4); - outw((inw(ioaddr + Wn4_Media) & ~(Media_10TP|Media_SQE)) | - media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media); - } - /* Switch to the stats window, and clear all stats by reading. */ outw(StatsDisable, ioaddr + EL3_CMD); EL3WINDOW(6); @@ -1119,63 +1140,226 @@ vortex_open(struct device *dev) /* Switch to register set 7 for normal use. */ EL3WINDOW(7); +#if defined(CONFIG_VLAN) + /* If this value is set no MTU adjustment is needed for 802.1Q. */ + outw(0x8100, ioaddr + Wn7_VLAN_EtherType); +#endif + spin_unlock(&vp->window_lock); if (vp->full_bus_master_rx) { /* Boomerang bus master. */ vp->cur_rx = vp->dirty_rx = 0; + /* Use 1518/+18 if the CRC is transferred. */ + vp->rx_buf_sz = dev->mtu + 14; + if (vp->rx_buf_sz < PKT_BUF_SZ) + vp->rx_buf_sz = PKT_BUF_SZ; + /* Initialize the RxEarly register as recommended. */ outw(SetRxThreshold + (1536>>2), ioaddr + EL3_CMD); outl(0x0020, ioaddr + PktStatus); - if (vortex_debug > 2) - printk(KERN_DEBUG "%s: Filling in the Rx ring.\n", dev->name); for (i = 0; i < RX_RING_SIZE; i++) { - struct sk_buff *skb; - vp->rx_ring[i].next = cpu_to_le32(virt_to_bus(&vp->rx_ring[i+1])); - vp->rx_ring[i].status = 0; /* Clear complete bit. */ - vp->rx_ring[i].length = cpu_to_le32(PKT_BUF_SZ | LAST_FRAG); - skb = dev_alloc_skb(PKT_BUF_SZ); + vp->rx_ring[i].length = cpu_to_le32(vp->rx_buf_sz | LAST_FRAG); + vp->rx_ring[i].status = 0; + vp->rx_ring[i].next = virt_to_le32desc(&vp->rx_ring[i+1]); + vp->rx_skbuff[i] = 0; + } + /* Wrap the ring. */ + vp->rx_head_desc = &vp->rx_ring[0]; + vp->rx_ring[i-1].next = virt_to_le32desc(&vp->rx_ring[0]); + + for (i = 0; i < RX_RING_SIZE; i++) { + struct sk_buff *skb = dev_alloc_skb(vp->rx_buf_sz); vp->rx_skbuff[i] = skb; if (skb == NULL) break; /* Bad news! */ skb->dev = dev; /* Mark as being used by this device. */ -#if LINUX_VERSION_CODE >= 0x10300 skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ - vp->rx_ring[i].addr = cpu_to_le32(virt_to_bus(skb->tail)); -#else - vp->rx_ring[i].addr = virt_to_bus(skb->data); -#endif + vp->rx_ring[i].addr = virt_to_le32desc(skb->tail); } - /* Wrap the ring. */ - vp->rx_ring[i-1].next = cpu_to_le32(virt_to_bus(&vp->rx_ring[0])); - outl(virt_to_bus(&vp->rx_ring[0]), ioaddr + UpListPtr); + outl(virt_to_bus(vp->rx_head_desc), ioaddr + UpListPtr); } if (vp->full_bus_master_tx) { /* Boomerang bus master Tx. */ dev->hard_start_xmit = &boomerang_start_xmit; vp->cur_tx = vp->dirty_tx = 0; - outb(PKT_BUF_SZ>>8, ioaddr + TxFreeThreshold); /* Room for a packet. */ + vp->tx_desc_tail = &vp->tx_ring[TX_RING_SIZE - 1]; + if (vp->drv_flags & IS_BOOMERANG) { + /* Room for a packet, to avoid long DownStall delays. */ + outb(PKT_BUF_SZ>>8, ioaddr + TxFreeThreshold); + } else if (vp->drv_flags & HAS_V2_TX) + outb(20, ioaddr + DownPollRate); + /* Clear the Tx ring. */ for (i = 0; i < TX_RING_SIZE; i++) vp->tx_skbuff[i] = 0; outl(0, ioaddr + DownListPtr); + vp->tx_full = 0; + vp->restart_tx = 1; } - /* Set reciever mode: presumably accept b-case and phys addr only. */ + /* The multicast filter is an ill-considered, write-only design. + The semantics are not documented, so we assume but do not rely + on the table being cleared with an RxReset. + Here we do an explicit clear of the largest known table. + */ + if (vp->drv_flags & HAS_V2_TX) + for (i = 0; i < 0x100; i++) + outw(SetFilterBit | i, ioaddr + EL3_CMD); + memset(vp->mc_filter, 0, sizeof vp->mc_filter); + + /* Set receiver mode: presumably accept b-case and phys addr only. */ + vp->rx_mode = 0; set_rx_mode(dev); - outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ - vp->in_interrupt = 0; - dev->tbusy = 0; - dev->interrupt = 0; - dev->start = 1; + start_operation1(dev); + + init_timer(&vp->timer); + vp->timer.expires = jiffies + media_tbl[dev->if_port].wait; + vp->timer.data = (unsigned long)dev; + vp->timer.function = &vortex_timer; /* timer handler */ + add_timer(&vp->timer); + + return 0; +} + +static void set_media_type(struct net_device *dev) +{ + struct vortex_private *vp = (struct vortex_private *)dev->priv; + long ioaddr = dev->base_addr; + int i_cfg; + + EL3WINDOW(3); + i_cfg = inl(ioaddr + Wn3_Config); + i_cfg &= ~0x00f00000; + if (vp->drv_flags & HAS_NWAY) + outl(i_cfg | 0x00800000, ioaddr + Wn3_Config); + else + outl(i_cfg | (dev->if_port << 20), ioaddr + Wn3_Config); + + if (dev->if_port == XCVR_MII || dev->if_port == XCVR_NWAY) { + int mii_reg1, mii_reg5; + EL3WINDOW(4); + /* Read BMSR (reg1) only to clear old status. */ + mii_reg1 = mdio_read(ioaddr, vp->phys[0], 1); + mii_reg5 = mdio_read(ioaddr, vp->phys[0], 5); + if (mii_reg5 == 0xffff || mii_reg5 == 0x0000) + ; /* No MII device or no link partner report */ + else if ((mii_reg5 & 0x0100) != 0 /* 100baseTx-FD */ + || (mii_reg5 & 0x00C0) == 0x0040) /* 10T-FD, but not 100-HD */ + vp->full_duplex = 1; + if (vp->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO "%s: MII #%d status %4.4x, link partner capability %4.4x," + " setting %s-duplex.\n", dev->name, vp->phys[0], + mii_reg1, mii_reg5, vp->full_duplex ? "full" : "half"); + EL3WINDOW(3); + } + if (dev->if_port == XCVR_10base2) + /* Start the thinnet transceiver. We should really wait 50ms...*/ + outw(StartCoax, ioaddr + EL3_CMD); + EL3WINDOW(4); + if (dev->if_port != XCVR_NWAY) { + outw((inw(ioaddr + Wn4_Media) & ~(Media_10TP|Media_SQE)) | + media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media); + } + /* Do we require link beat to transmit? */ + if (vp->info1 & 0x4000) + outw(inw(ioaddr + Wn4_Media) & ~Media_Lnk, ioaddr + Wn4_Media); + + /* Set the full-duplex and oversized frame bits. */ + EL3WINDOW(3); + + vp->wn3_mac_ctrl = vp->full_duplex ? 0x0120 : 0; + if (dev->mtu > 1500) + vp->wn3_mac_ctrl |= (dev->mtu == 1504 ? 0x0400 : 0x0040); + outb(vp->wn3_mac_ctrl, ioaddr + Wn3_MAC_Ctrl); + + if (vp->drv_flags & HAS_V2_TX) + outw(dev->mtu + 14, ioaddr + Wn3_MaxPktSize); +} + +static void activate_xcvr(struct net_device *dev) +{ + struct vortex_private *vp = (struct vortex_private *)dev->priv; + long ioaddr = dev->base_addr; + int reset_opts; + + /* Correct some magic bits. */ + EL3WINDOW(2); + reset_opts = inw(ioaddr + Wn2_ResetOptions); + if (vp->drv_flags & INVERT_LED_PWR) + reset_opts |= 0x0010; + if (vp->drv_flags & MII_XCVR_PWR) + reset_opts |= 0x4000; + outw(reset_opts, ioaddr + Wn2_ResetOptions); + if (vp->drv_flags & WN0_XCVR_PWR) { + EL3WINDOW(0); + outw(0x0900, ioaddr); + } +} + +static void start_operation(struct net_device *dev) +{ + struct vortex_private *vp = (struct vortex_private *)dev->priv; + long ioaddr = dev->base_addr; + int i; + + outw(TxReset, ioaddr + EL3_CMD); + for (i = 2000; i >= 0 ; i--) + if ( ! (inw(ioaddr + EL3_STATUS) & CmdInProgress)) + break; + + outw(RxReset | 0x04, ioaddr + EL3_CMD); + /* Assume this cleared the filter. */ + memset(vp->mc_filter, 0, sizeof vp->mc_filter); + + /* Wait a few ticks for the RxReset command to complete. */ + for (i = 0; i < 200000; i++) + if ( ! (inw(ioaddr + EL3_STATUS) & CmdInProgress)) + break; + if (i >= 200 && (vp->msg_level & NETIF_MSG_DRV)) + printk(KERN_DEBUG "%s: Rx Reset took an unexpectedly long time" + " to finish, %d ticks.\n", + dev->name, i); + + outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD); + /* Handle VLANs and jumbo frames. */ + if ((vp->drv_flags & HAS_V2_TX) && dev->mtu > 1500) { + EL3WINDOW(3); + outw(dev->mtu + 14, ioaddr + Wn3_MaxPktSize); + if (dev->mtu > 2033) { + outl(inl(ioaddr + Wn3_Config) | 0x0000C000, ioaddr + Wn3_Config); + outw(SetTxStart + (2000>>2), ioaddr + EL3_CMD); + } + } + /* Reset the station address and mask. */ + EL3WINDOW(2); + for (i = 0; i < 6; i++) + outb(dev->dev_addr[i], ioaddr + i); + for (; i < 12; i+=2) + outw(0, ioaddr + i); + if (vp->drv_flags & IS_BOOMERANG) { + /* Room for a packet, to avoid long DownStall delays. */ + outb(PKT_BUF_SZ>>8, ioaddr + TxFreeThreshold); + } else if (vp->drv_flags & HAS_V2_TX) { + outb(20, ioaddr + DownPollRate); + vp->restart_tx = 1; + } +} +static void start_operation1(struct net_device *dev) +{ + struct vortex_private *vp = (struct vortex_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (vp->full_bus_master_rx) { /* post-Vortex bus master. */ + /* Initialize the RxEarly register as recommended. */ + outw(SetRxThreshold + (1536>>2), ioaddr + EL3_CMD); + outl(0x0020, ioaddr + PktStatus); + outl(virt_to_bus(&vp->rx_ring[vp->cur_rx % RX_RING_SIZE]), + ioaddr + UpListPtr); + } + + outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ /* Allow status bits to be seen. */ - vp->status_enable = SetStatusEnb | HostError|IntReq|StatsFull|TxComplete| - (vp->full_bus_master_tx ? DownComplete : TxAvailable) | - (vp->full_bus_master_rx ? UpComplete : RxComplete) | - (vp->bus_master ? DMADone : 0); - vp->intr_enable = SetIntrEnb | IntLatch | TxAvailable | RxComplete | - StatsFull | HostError | TxComplete | IntReq - | (vp->bus_master ? DMADone : 0) | UpComplete | DownComplete; outw(vp->status_enable, ioaddr + EL3_CMD); /* Ack all pending events, and set active indicator mask. */ outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, @@ -1183,24 +1367,47 @@ vortex_open(struct device *dev) outw(vp->intr_enable, ioaddr + EL3_CMD); if (vp->cb_fn_base) /* The PCMCIA people are idiots. */ writel(0x8000, vp->cb_fn_base + 4); - - MOD_INC_USE_COUNT; - - return 0; + netif_start_tx_queue(dev); } static void vortex_timer(unsigned long data) { - struct device *dev = (struct device *)data; + struct net_device *dev = (struct net_device *)data; struct vortex_private *vp = (struct vortex_private *)dev->priv; long ioaddr = dev->base_addr; int next_tick = 60*HZ; int ok = 0; - int media_status, mii_status, old_window; - - if (vortex_debug > 1) - printk(KERN_DEBUG "%s: Media selection timer tick happened, %s.\n", - dev->name, media_tbl[dev->if_port].name); + int media_status, old_window; + + if (vp->msg_level & NETIF_MSG_TIMER) + printk(KERN_DEBUG "%s: Media selection timer tick happened, " + "%s %s duplex.\n", + dev->name, media_tbl[dev->if_port].name, + vp->full_duplex ? "full" : "half"); + + /* This only works with bus-master (non-3c590) chips. */ + if (vp->cur_tx - vp->dirty_tx > 1 && + (jiffies - dev->trans_start) > TX_TIMEOUT) { + /* Check for blocked interrupts. */ + if (inw(ioaddr + EL3_STATUS) & IntLatch) { + /* We have a blocked IRQ line. This should never happen, but + we recover as best we can.*/ + if ( ! vp->polling) { + if (jiffies - vp->last_reset > 10*HZ) { + printk(KERN_ERR "%s: IRQ %d is physically blocked! " + "Failing back to low-rate polling.\n", + dev->name, dev->irq); + vp->last_reset = jiffies; + } + vp->polling = 1; + } + vortex_interrupt(dev->irq, dev, 0); + next_tick = jiffies + 2; + } else { + vortex_tx_timeout(dev); + vp->last_reset = jiffies; + } + } disable_irq(dev->irq); old_window = inw(ioaddr + EL3_CMD) >> 13; @@ -1210,59 +1417,66 @@ static void vortex_timer(unsigned long data) case XCVR_10baseT: case XCVR_100baseTx: case XCVR_100baseFx: if (media_status & Media_LnkBeat) { ok = 1; - if (vortex_debug > 1) + if (vp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: Media %s has link beat, %x.\n", dev->name, media_tbl[dev->if_port].name, media_status); - } else if (vortex_debug > 1) + } else if (vp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: Media %s is has no link beat, %x.\n", dev->name, media_tbl[dev->if_port].name, media_status); break; - case XCVR_MII: case XCVR_NWAY: - mii_status = mdio_read(ioaddr, vp->phys[0], 1); - ok = 1; - if (debug > 1) - printk(KERN_DEBUG "%s: MII transceiver has status %4.4x.\n", - dev->name, mii_status); - if (mii_status & 0x0004) { - int mii_reg5 = mdio_read(ioaddr, vp->phys[0], 5); - if (! vp->force_fd && mii_reg5 != 0xffff) { - int duplex = (mii_reg5&0x0100) || - (mii_reg5 & 0x01C0) == 0x0040; - if (vp->full_duplex != duplex) { - vp->full_duplex = duplex; - printk(KERN_INFO "%s: Setting %s-duplex based on MII " - "#%d link partner capability of %4.4x.\n", - dev->name, vp->full_duplex ? "full" : "half", - vp->phys[0], mii_reg5); - /* Set the full-duplex bit. */ - outb((vp->full_duplex ? 0x20 : 0) | - (dev->mtu > 1500 ? 0x40 : 0), - ioaddr + Wn3_MAC_Ctrl); - } - next_tick = 60*HZ; - } - } - break; - default: /* Other media types handled by Tx timeouts. */ - if (vortex_debug > 1) - printk(KERN_DEBUG "%s: Media %s is has no indication, %x.\n", - dev->name, media_tbl[dev->if_port].name, media_status); + case XCVR_MII: case XCVR_NWAY: { + int mii_status = mdio_read(ioaddr, vp->phys[0], 1); + int mii_reg5, negotiated, duplex; + ok = 1; + if (vp->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: MII transceiver has status %4.4x.\n", + dev->name, mii_status); + if (vp->medialock) + break; + if ((mii_status & 0x0004) == 0) { + next_tick = 5*HZ; + break; + } + mii_reg5 = mdio_read(ioaddr, vp->phys[0], 5); + negotiated = mii_reg5 & vp->advertising; + duplex = (negotiated & 0x0100) || (negotiated & 0x03C0) == 0x0040; + if (mii_reg5 == 0xffff || vp->full_duplex == duplex) + break; + if (vp->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO "%s: Setting %s-duplex based on " + "MII #%d link partner capability of %4.4x.\n", + dev->name, vp->full_duplex ? "full" : "half", + vp->phys[0], mii_reg5); + vp->full_duplex = duplex; + /* Set the full-duplex bit. */ + EL3WINDOW(3); + if (duplex) + vp->wn3_mac_ctrl |= 0x120; + else + vp->wn3_mac_ctrl &= ~0x120; + outb(vp->wn3_mac_ctrl, ioaddr + Wn3_MAC_Ctrl); + break; + } + default: /* Other media types handled by Tx timeouts. */ + if (vp->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Media %s is has no indication, %x.\n", + dev->name, media_tbl[dev->if_port].name, media_status); ok = 1; } if ( ! ok) { - union wn3_config config; + int i_cfg; do { dev->if_port = media_tbl[dev->if_port].next; } while ( ! (vp->available_media & media_tbl[dev->if_port].mask)); if (dev->if_port == XCVR_Default) { /* Go back to default. */ dev->if_port = vp->default_media; - if (vortex_debug > 1) + if (vp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: Media selection failing, using default " "%s port.\n", dev->name, media_tbl[dev->if_port].name); } else { - if (vortex_debug > 1) + if (vp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: Media selection failed, now trying " "%s port.\n", dev->name, media_tbl[dev->if_port].name); @@ -1272,54 +1486,60 @@ static void vortex_timer(unsigned long data) media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media); EL3WINDOW(3); - config.i = inl(ioaddr + Wn3_Config); - config.u.xcvr = dev->if_port; - outl(config.i, ioaddr + Wn3_Config); + i_cfg = inl(ioaddr + Wn3_Config); + i_cfg &= ~0x00f00000; + i_cfg |= (dev->if_port << 20); + outl(i_cfg, ioaddr + Wn3_Config); outw(dev->if_port == XCVR_10base2 ? StartCoax : StopCoax, ioaddr + EL3_CMD); } EL3WINDOW(old_window); enable_irq(dev->irq); + if (vp->restore_intr_mask) + outw(FakeIntr, ioaddr + EL3_CMD); - if (vortex_debug > 2) + if (vp->msg_level & NETIF_MSG_TIMER) printk(KERN_DEBUG "%s: Media selection timer finished, %s.\n", dev->name, media_tbl[dev->if_port].name); - vp->timer.expires = RUN_AT(next_tick); + vp->timer.expires = jiffies + next_tick; add_timer(&vp->timer); return; } -static void vortex_tx_timeout(struct device *dev) +static void vortex_tx_timeout(struct net_device *dev) { struct vortex_private *vp = (struct vortex_private *)dev->priv; long ioaddr = dev->base_addr; + int tx_status = inb(ioaddr + TxStatus); + int intr_status = inw(ioaddr + EL3_STATUS); int j; printk(KERN_ERR "%s: transmit timed out, tx_status %2.2x status %4.4x.\n", - dev->name, inb(ioaddr + TxStatus), - inw(ioaddr + EL3_STATUS)); + dev->name, tx_status, intr_status); /* Slight code bloat to be user friendly. */ - if ((inb(ioaddr + TxStatus) & 0x88) == 0x88) + if ((tx_status & 0x88) == 0x88) printk(KERN_ERR "%s: Transmitter encountered 16 collisions --" " network cable problem?\n", dev->name); - if (inw(ioaddr + EL3_STATUS) & IntLatch) { + if (intr_status & IntLatch) { printk(KERN_ERR "%s: Interrupt posted but not delivered --" " IRQ blocked by another device?\n", dev->name); - /* Bad idea here.. but we might as well handle a few events. */ + /* Race condition possible, but we handle a few events. */ vortex_interrupt(dev->irq, dev, 0); } #if ! defined(final_version) && LINUX_VERSION_CODE >= 0x10300 if (vp->full_bus_master_tx) { int i; - printk(KERN_DEBUG " Flags; bus-master %d, full %d; dirty %d " - "current %d.\n", - vp->full_bus_master_tx, vp->tx_full, vp->dirty_tx, vp->cur_tx); - printk(KERN_DEBUG " Transmit list %8.8x vs. %p.\n", - inl(ioaddr + DownListPtr), - &vp->tx_ring[vp->dirty_tx % TX_RING_SIZE]); + printk(KERN_DEBUG " Flags: bus-master %d full %d dirty %d " + "current %d restart_tx %d.\n", + vp->full_bus_master_tx, vp->tx_full, vp->dirty_tx, vp->cur_tx, + vp->restart_tx); + printk(KERN_DEBUG " Transmit list %8.8x vs. %p, packet ID %2.2x.\n", + (int)inl(ioaddr + DownListPtr), + &vp->tx_ring[vp->dirty_tx % TX_RING_SIZE], + inb(ioaddr + TxPktID)); for (i = 0; i < TX_RING_SIZE; i++) { printk(KERN_DEBUG " %d: @%p length %8.8x status %8.8x\n", i, &vp->tx_ring[i], @@ -1334,26 +1554,40 @@ static void vortex_tx_timeout(struct device *dev) break; vp->stats.tx_errors++; + if (vp->full_bus_master_tx) { - if (vortex_debug > 0) + if (vp->drv_flags & HAS_V2_TX) + outb(20, ioaddr + DownPollRate); + if (vp->msg_level & NETIF_MSG_TX_ERR) printk(KERN_DEBUG "%s: Resetting the Tx ring pointer.\n", dev->name); if (vp->cur_tx - vp->dirty_tx > 0 && inl(ioaddr + DownListPtr) == 0) outl(virt_to_bus(&vp->tx_ring[vp->dirty_tx % TX_RING_SIZE]), ioaddr + DownListPtr); - if (vp->tx_full && (vp->cur_tx - vp->dirty_tx <= TX_RING_SIZE - 1)) { + else + vp->restart_tx = 1; + if (vp->drv_flags & IS_BOOMERANG) { + /* Room for a packet, to avoid long DownStall delays. */ + outb(PKT_BUF_SZ>>8, ioaddr + TxFreeThreshold); + outw(DownUnstall, ioaddr + EL3_CMD); + } else { + if (dev->mtu > 2033) + outw(SetTxStart + (2000>>2), ioaddr + EL3_CMD); + } + + if (vp->tx_full && (vp->cur_tx - vp->dirty_tx <= TX_QUEUE_LEN - 1)) { vp->tx_full = 0; - clear_bit(0, (void*)&dev->tbusy); + netif_unpause_tx_queue(dev); } - outb(PKT_BUF_SZ>>8, ioaddr + TxFreeThreshold); - outw(DownUnstall, ioaddr + EL3_CMD); - } else + } else { + netif_unpause_tx_queue(dev); vp->stats.tx_dropped++; - + } + /* Issue Tx Enable */ outw(TxEnable, ioaddr + EL3_CMD); dev->trans_start = jiffies; - + /* Switch to register set 7 for normal use. */ EL3WINDOW(7); } @@ -1363,7 +1597,7 @@ static void vortex_tx_timeout(struct device *dev) * the cache impact. */ static void -vortex_error(struct device *dev, int status) +vortex_error(struct net_device *dev, int status) { struct vortex_private *vp = (struct vortex_private *)dev->priv; long ioaddr = dev->base_addr; @@ -1373,8 +1607,7 @@ vortex_error(struct device *dev, int status) if (status & TxComplete) { /* Really "TxError" for us. */ unsigned char tx_status = inb(ioaddr + TxStatus); /* Presumably a tx-timeout. We must merely re-enable. */ - if (vortex_debug > 2 - || (tx_status != 0x88 && vortex_debug > 0)) + if (vp->msg_level & NETIF_MSG_TX_ERR) printk(KERN_DEBUG"%s: Transmit error, Tx status register %2.2x.\n", dev->name, tx_status); if (tx_status & 0x14) vp->stats.tx_fifo_errors++; @@ -1382,8 +1615,10 @@ vortex_error(struct device *dev, int status) outb(0, ioaddr + TxStatus); if (tx_status & 0x30) do_tx_reset = 1; - else /* Merely re-enable the transmitter. */ + else { /* Merely re-enable the transmitter. */ outw(TxEnable, ioaddr + EL3_CMD); + vp->restart_tx = 1; + } } if (status & RxEarly) { /* Rx early is unused. */ vortex_rx(dev); @@ -1391,7 +1626,7 @@ vortex_error(struct device *dev, int status) } if (status & StatsFull) { /* Empty statistics. */ static int DoneDidThat = 0; - if (vortex_debug > 4) + if (vp->msg_level & NETIF_MSG_MISC) printk(KERN_DEBUG "%s: Updating stats.\n", dev->name); update_stats(ioaddr, dev); /* HACK: Disable statistics as an interrupt source. */ @@ -1409,31 +1644,47 @@ vortex_error(struct device *dev, int status) if (status & IntReq) { /* Restore all interrupt sources. */ outw(vp->status_enable, ioaddr + EL3_CMD); outw(vp->intr_enable, ioaddr + EL3_CMD); + vp->restore_intr_mask = 0; } if (status & HostError) { u16 fifo_diag; EL3WINDOW(4); fifo_diag = inw(ioaddr + Wn4_FIFODiag); - if (vortex_debug > 0) - printk(KERN_ERR "%s: Host error, FIFO diagnostic register %4.4x.\n", - dev->name, fifo_diag); + if (vp->msg_level & NETIF_MSG_DRV) + printk(KERN_ERR "%s: Host error, status %x, FIFO diagnostic " + "register %4.4x.\n", + dev->name, status, fifo_diag); /* Adapter failure requires Tx/Rx reset and reinit. */ if (vp->full_bus_master_tx) { + int bus_status = inl(ioaddr + PktStatus); + /* 0x80000000 PCI master abort. */ + /* 0x40000000 PCI target abort. */ outw(TotalReset | 0xff, ioaddr + EL3_CMD); for (i = 2000; i >= 0 ; i--) if ( ! (inw(ioaddr + EL3_STATUS) & CmdInProgress)) break; + if (vp->msg_level & NETIF_MSG_DRV) + printk(KERN_ERR "%s: PCI bus error, bus status %8.8x, reset " + "had %d tick left.\n", + dev->name, bus_status, i); /* Re-enable the receiver. */ outw(RxEnable, ioaddr + EL3_CMD); outw(TxEnable, ioaddr + EL3_CMD); + vp->restart_tx = 1; } else if (fifo_diag & 0x0400) do_tx_reset = 1; if (fifo_diag & 0x3000) { - outw(RxReset, ioaddr + EL3_CMD); - for (i = 2000; i >= 0 ; i--) + outw(RxReset | 7, ioaddr + EL3_CMD); + for (i = 200000; i >= 0 ; i--) if ( ! (inw(ioaddr + EL3_STATUS) & CmdInProgress)) break; + if ((vp->drv_flags & HAS_V2_TX) && dev->mtu > 1500) { + EL3WINDOW(3); + outw(dev->mtu + 14, ioaddr + Wn3_MaxPktSize); + } /* Set the Rx filter to the current state. */ + memset(vp->mc_filter, 0, sizeof vp->mc_filter); + vp->rx_mode = 0; set_rx_mode(dev); outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */ outw(AckIntr | HostError, ioaddr + EL3_CMD); @@ -1446,19 +1697,23 @@ vortex_error(struct device *dev, int status) if ( ! (inw(ioaddr + EL3_STATUS) & CmdInProgress)) break; outw(TxEnable, ioaddr + EL3_CMD); + vp->restart_tx = 1; } } static int -vortex_start_xmit(struct sk_buff *skb, struct device *dev) +vortex_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct vortex_private *vp = (struct vortex_private *)dev->priv; long ioaddr = dev->base_addr; - if (test_and_set_bit(0, (void*)&dev->tbusy) != 0) { - if (jiffies - dev->trans_start >= TX_TIMEOUT) + /* Block a timer-based transmit from overlapping. This happens when + packets are presumed lost, and we use this check the Tx status. */ + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) vortex_tx_timeout(dev); return 1; } @@ -1471,16 +1726,18 @@ vortex_start_xmit(struct sk_buff *skb, struct device *dev) outw((skb->len + 3) & ~3, ioaddr + Wn7_MasterLen); vp->tx_skb = skb; outw(StartDMADown, ioaddr + EL3_CMD); - /* dev->tbusy will be cleared at the DMADone interrupt. */ + netif_stop_tx_queue(dev); + /* Tx busy will be cleared at the DMADone interrupt. */ } else { /* ... and the packet rounded to a doubleword. */ outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2); - DEV_FREE_SKB(skb); - if (inw(ioaddr + TxFree) > 1536) { - clear_bit(0, (void*)&dev->tbusy); - } else + dev_free_skb(skb); + if (inw(ioaddr + TxFree) <= 1536) { /* Interrupt us when the FIFO has room for max-sized packet. */ outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD); + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); /* Typical path */ } dev->trans_start = jiffies; @@ -1492,7 +1749,7 @@ vortex_start_xmit(struct sk_buff *skb, struct device *dev) while (--i > 0 && (tx_status = inb(ioaddr + TxStatus)) > 0) { if (tx_status & 0x3C) { /* A Tx-disabling error occurred. */ - if (vortex_debug > 2) + if (vp->msg_level & NETIF_MSG_TX_ERR) printk(KERN_DEBUG "%s: Tx error, status %2.2x.\n", dev->name, tx_status); if (tx_status & 0x04) vp->stats.tx_fifo_errors++; @@ -1505,6 +1762,7 @@ vortex_start_xmit(struct sk_buff *skb, struct device *dev) break; } outw(TxEnable, ioaddr + EL3_CMD); + vp->restart_tx = 1; } outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */ } @@ -1513,38 +1771,46 @@ vortex_start_xmit(struct sk_buff *skb, struct device *dev) } static int -boomerang_start_xmit(struct sk_buff *skb, struct device *dev) +boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct vortex_private *vp = (struct vortex_private *)dev->priv; long ioaddr = dev->base_addr; + int entry; + struct boom_tx_desc *prev_entry; + unsigned long flags; + int i; - if (test_and_set_bit(0, (void*)&dev->tbusy) != 0) { - if (jiffies - dev->trans_start >= TX_TIMEOUT) + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) vortex_tx_timeout(dev); return 1; - } else { - /* Calculate the next Tx descriptor entry. */ - int entry = vp->cur_tx % TX_RING_SIZE; - struct boom_tx_desc *prev_entry = - &vp->tx_ring[(vp->cur_tx-1) % TX_RING_SIZE]; - unsigned long flags; - int i; + } - if (vortex_debug > 3) - printk(KERN_DEBUG "%s: Trying to send a packet, Tx index %d.\n", - dev->name, vp->cur_tx); - if (vp->tx_full) { - if (vortex_debug >0) - printk(KERN_WARNING "%s: Tx Ring full, refusing to send buffer.\n", - dev->name); - return 1; - } - vp->tx_skbuff[entry] = skb; - vp->tx_ring[entry].next = 0; - vp->tx_ring[entry].addr = cpu_to_le32(virt_to_bus(skb->data)); - vp->tx_ring[entry].length = cpu_to_le32(skb->len | LAST_FRAG); + /* Calculate the next Tx descriptor entry. */ + entry = vp->cur_tx % TX_RING_SIZE; + prev_entry = &vp->tx_ring[(vp->cur_tx-1) % TX_RING_SIZE]; + + if (vp->msg_level & NETIF_MSG_TX_QUEUED) + printk(KERN_DEBUG "%s: Queuing Tx packet, index %d.\n", + dev->name, vp->cur_tx); + /* Impossible error. */ + if (vp->tx_full) { + printk(KERN_WARNING "%s: Tx Ring full, refusing to send buffer.\n", + dev->name); + return 1; + } + vp->tx_skbuff[entry] = skb; + vp->tx_ring[entry].next = 0; + vp->tx_ring[entry].addr = virt_to_le32desc(skb->data); + vp->tx_ring[entry].length = cpu_to_le32(skb->len | LAST_FRAG); + if (vp->capabilities & CapNoTxLength) + vp->tx_ring[entry].status = + cpu_to_le32(TxNoRoundup | TxIntrUploaded | (entry << 2)); + else vp->tx_ring[entry].status = cpu_to_le32(skb->len | TxIntrUploaded); + if (vp->drv_flags & IS_BOOMERANG) { save_flags(flags); cli(); outw(DownStall, ioaddr + EL3_CMD); @@ -1552,66 +1818,64 @@ boomerang_start_xmit(struct sk_buff *skb, struct device *dev) for (i = 600; i >= 0 ; i--) if ( (inw(ioaddr + EL3_STATUS) & CmdInProgress) == 0) break; - prev_entry->next = cpu_to_le32(virt_to_bus(&vp->tx_ring[entry])); + vp->tx_desc_tail->next = virt_to_le32desc(&vp->tx_ring[entry]); + vp->tx_desc_tail = &vp->tx_ring[entry]; if (inl(ioaddr + DownListPtr) == 0) { outl(virt_to_bus(&vp->tx_ring[entry]), ioaddr + DownListPtr); queued_packet++; } outw(DownUnstall, ioaddr + EL3_CMD); restore_flags(flags); - - vp->cur_tx++; - if (vp->cur_tx - vp->dirty_tx > TX_RING_SIZE - 1) - vp->tx_full = 1; - else { /* Clear previous interrupt enable. */ + } else { + vp->tx_desc_tail->next = virt_to_le32desc(&vp->tx_ring[entry]); + vp->tx_desc_tail = &vp->tx_ring[entry]; + if (vp->restart_tx) { + outl(virt_to_bus(vp->tx_desc_tail), ioaddr + DownListPtr); + vp->restart_tx = 0; + queued_packet++; + } + } + vp->cur_tx++; + if (vp->cur_tx - vp->dirty_tx >= TX_QUEUE_LEN) { + vp->tx_full = 1; + /* Check for a just-cleared queue. */ + if (vp->cur_tx - (volatile unsigned int)vp->dirty_tx + < TX_QUEUE_LEN - 2) { + vp->tx_full = 0; + netif_unpause_tx_queue(dev); + } else + netif_stop_tx_queue(dev); + } else { /* Clear previous interrupt enable. */ #if defined(tx_interrupt_mitigation) - prev_entry->status &= cpu_to_le32(~TxIntrUploaded); + prev_entry->status &= cpu_to_le32(~TxIntrUploaded); #endif - clear_bit(0, (void*)&dev->tbusy); - } - dev->trans_start = jiffies; - return 0; + netif_unpause_tx_queue(dev); /* Typical path */ } + dev->trans_start = jiffies; + return 0; } /* The interrupt handler does all of the Rx thread work and cleans up after the Tx thread. */ static void vortex_interrupt(int irq, void *dev_id, struct pt_regs *regs) { - struct device *dev = dev_id; + struct net_device *dev = dev_id; struct vortex_private *vp = (struct vortex_private *)dev->priv; long ioaddr; int latency, status; - int work_done = max_interrupt_work; - -#if defined(__i386__) - /* A lock to prevent simultaneous entry bug on Intel SMP machines. */ - if (test_and_set_bit(0, (void*)&dev->interrupt)) { - printk(KERN_ERR"%s: SMP simultaneous entry of an interrupt handler.\n", - dev->name); - dev->interrupt = 0; /* Avoid halting machine. */ - return; - } -#else - if (dev->interrupt) { - printk(KERN_ERR "%s: Re-entering the interrupt handler.\n", dev->name); - return; - } - dev->interrupt = 1; -#endif + int work_done = vp->max_interrupt_work; - dev->interrupt = 1; ioaddr = dev->base_addr; latency = inb(ioaddr + Timer); status = inw(ioaddr + EL3_STATUS); if (status == 0xffff) goto handler_exit; - if (vortex_debug > 4) + if (vp->msg_level & NETIF_MSG_INTR) printk(KERN_DEBUG "%s: interrupt, status %4.4x, latency %d ticks.\n", dev->name, status, latency); do { - if (vortex_debug > 5) + if (vp->msg_level & NETIF_MSG_INTR) printk(KERN_DEBUG "%s: In interrupt loop, status %4.4x.\n", dev->name, status); if (status & RxComplete) @@ -1622,12 +1886,11 @@ static void vortex_interrupt(int irq, void *dev_id, struct pt_regs *regs) } if (status & TxAvailable) { - if (vortex_debug > 5) + if (vp->msg_level & NETIF_MSG_TX_DONE) printk(KERN_DEBUG " TX room bit was handled.\n"); /* There's room in the FIFO for a full-sized packet. */ outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); - clear_bit(0, (void*)&dev->tbusy); - mark_bh(NET_BH); + netif_resume_tx_queue(dev); } if (status & DownComplete) { @@ -1636,30 +1899,37 @@ static void vortex_interrupt(int irq, void *dev_id, struct pt_regs *regs) outw(AckIntr | DownComplete, ioaddr + EL3_CMD); while (vp->cur_tx - dirty_tx > 0) { int entry = dirty_tx % TX_RING_SIZE; - if (inl(ioaddr + DownListPtr) == - virt_to_bus(&vp->tx_ring[entry])) + int tx_status = le32_to_cpu(vp->tx_ring[entry].status); + if (vp->capabilities & CapNoTxLength) { + if ( ! (tx_status & TxDownComplete)) + break; + } else if (inl(ioaddr + DownListPtr) == + virt_to_bus(&vp->tx_ring[entry])) break; /* It still hasn't been processed. */ + if (vp->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG "%s: Transmit done, Tx status %8.8x.\n", + dev->name, tx_status); if (vp->tx_skbuff[entry]) { - DEV_FREE_SKB(vp->tx_skbuff[entry]); + dev_free_skb_irq(vp->tx_skbuff[entry]); vp->tx_skbuff[entry] = 0; } /* vp->stats.tx_packets++; Counted below. */ dirty_tx++; } vp->dirty_tx = dirty_tx; - if (vp->tx_full && (vp->cur_tx - dirty_tx <= TX_RING_SIZE - 1)) { + /* 4 entry hysteresis before marking the queue non-full. */ + if (vp->tx_full && (vp->cur_tx - dirty_tx < TX_QUEUE_LEN - 4)) { vp->tx_full = 0; - clear_bit(0, (void*)&dev->tbusy); - mark_bh(NET_BH); + netif_resume_tx_queue(dev); } } if (status & DMADone) { if (inw(ioaddr + Wn7_MasterStatus) & 0x1000) { outw(0x1000, ioaddr + Wn7_MasterStatus); /* Ack the event. */ - DEV_FREE_SKB(vp->tx_skb); /* Release the transfered buffer */ + /* Release the transfered buffer */ + dev_free_skb_irq(vp->tx_skb); if (inw(ioaddr + TxFree) > 1536) { - clear_bit(0, (void*)&dev->tbusy); - mark_bh(NET_BH); + netif_resume_tx_queue(dev); } else /* Interrupt when FIFO has room for max-sized packet. */ outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD); } @@ -1683,6 +1953,7 @@ static void vortex_interrupt(int irq, void *dev_id, struct pt_regs *regs) outw(SetStatusEnb | ((~status) & 0x7FE), ioaddr + EL3_CMD); outw(AckIntr | 0x7FF, ioaddr + EL3_CMD); /* The timer will reenable interrupts. */ + vp->restore_intr_mask = 1; break; } } @@ -1693,32 +1964,27 @@ static void vortex_interrupt(int irq, void *dev_id, struct pt_regs *regs) } while ((status = inw(ioaddr + EL3_STATUS)) & (IntLatch | RxComplete)); - if (vortex_debug > 4) + if (vp->msg_level & NETIF_MSG_INTR) printk(KERN_DEBUG "%s: exiting interrupt, status %4.4x.\n", dev->name, status); handler_exit: -#if defined(__i386__) - clear_bit(0, (void*)&dev->interrupt); -#else - dev->interrupt = 0; -#endif return; } -static int vortex_rx(struct device *dev) +static int vortex_rx(struct net_device *dev) { struct vortex_private *vp = (struct vortex_private *)dev->priv; long ioaddr = dev->base_addr; int i; short rx_status; - if (vortex_debug > 5) + if (vp->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG" In rx_packet(), status %4.4x, rx_status %4.4x.\n", inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus)); while ((rx_status = inw(ioaddr + RxStatus)) > 0) { if (rx_status & 0x4000) { /* Error, update stats. */ unsigned char rx_error = inb(ioaddr + RxErrors); - if (vortex_debug > 2) + if (vp->msg_level & NETIF_MSG_RX_ERR) printk(KERN_DEBUG " Rx error: status %2.2x.\n", rx_error); vp->stats.rx_errors++; if (rx_error & 0x01) vp->stats.rx_over_errors++; @@ -1732,7 +1998,7 @@ static int vortex_rx(struct device *dev) struct sk_buff *skb; skb = dev_alloc_skb(pkt_len + 5); - if (vortex_debug > 4) + if (vp->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG "Receiving packet size %d status %4.4x.\n", pkt_len, rx_status); if (skb != NULL) { @@ -1756,12 +2022,15 @@ static int vortex_rx(struct device *dev) netif_rx(skb); dev->last_rx = jiffies; vp->stats.rx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + vp->stats.rx_bytes += pkt_len; +#endif /* Wait a limited time to go to next packet. */ for (i = 200; i >= 0; i--) if ( ! (inw(ioaddr + EL3_STATUS) & CmdInProgress)) break; continue; - } else if (vortex_debug) + } else if (vp->msg_level & NETIF_MSG_RX_ERR) printk(KERN_NOTICE "%s: No memory to allocate a sk_buff of " "size %d.\n", dev->name, pkt_len); } @@ -1777,7 +2046,7 @@ static int vortex_rx(struct device *dev) } static int -boomerang_rx(struct device *dev) +boomerang_rx(struct net_device *dev) { struct vortex_private *vp = (struct vortex_private *)dev->priv; int entry = vp->cur_rx % RX_RING_SIZE; @@ -1785,42 +2054,51 @@ boomerang_rx(struct device *dev) int rx_status; int rx_work_limit = vp->dirty_rx + RX_RING_SIZE - vp->cur_rx; - if (vortex_debug > 5) + if (vp->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG " In boomerang_rx(), status %4.4x, rx_status " - "%4.4x.\n", - inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus)); + "%8.8x.\n", + inw(ioaddr+EL3_STATUS), (int)inl(ioaddr+UpPktStatus)); while ((rx_status = le32_to_cpu(vp->rx_ring[entry].status)) & RxDComplete){ if (--rx_work_limit < 0) break; if (rx_status & RxDError) { /* Error, update stats. */ unsigned char rx_error = rx_status >> 16; - if (vortex_debug > 2) + if (vp->msg_level & NETIF_MSG_RX_ERR) printk(KERN_DEBUG " Rx error: status %2.2x.\n", rx_error); vp->stats.rx_errors++; - if (rx_error & 0x01) vp->stats.rx_over_errors++; if (rx_error & 0x02) vp->stats.rx_length_errors++; + if (rx_error & 0x10) vp->stats.rx_length_errors++; if (rx_error & 0x04) vp->stats.rx_frame_errors++; if (rx_error & 0x08) vp->stats.rx_crc_errors++; - if (rx_error & 0x10) vp->stats.rx_length_errors++; + if (rx_error & 0x01) { + vp->stats.rx_over_errors++; + if (vp->drv_flags & HAS_V2_TX) { + int cur_rx_thresh = inb(ioaddr + RxPriorityThresh); + if (cur_rx_thresh < 0x20) + outb(cur_rx_thresh + 1, ioaddr + RxPriorityThresh); + else + printk(KERN_WARNING "%s: Excessive PCI latency causing" + " packet corruption.\n", dev->name); + } + } } else { /* The packet length: up to 4.5K!. */ int pkt_len = rx_status & 0x1fff; struct sk_buff *skb; - if (vortex_debug > 4) + if (vp->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG "Receiving packet size %d status %4.4x.\n", pkt_len, rx_status); /* Check if the packet is long enough to just accept without copying to a properly sized skbuff. */ - if (pkt_len < rx_copybreak + if (pkt_len < vp->rx_copybreak && (skb = dev_alloc_skb(pkt_len + 2)) != 0) { skb->dev = dev; skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ /* 'skb_put()' points to the start of sk_buff data area. */ memcpy(skb_put(skb, pkt_len), - bus_to_virt(le32_to_cpu(vp->rx_ring[entry].addr)), - pkt_len); + le32desc_to_virt(vp->rx_ring[entry].addr), pkt_len); rx_copy++; } else { void *temp; @@ -1829,7 +2107,7 @@ boomerang_rx(struct device *dev) vp->rx_skbuff[entry] = NULL; temp = skb_put(skb, pkt_len); /* Remove this checking code for final release. */ - if (bus_to_virt(le32_to_cpu(vp->rx_ring[entry].addr)) != temp) + if (le32desc_to_virt(vp->rx_ring[entry].addr) != temp) printk(KERN_ERR "%s: Warning -- the skbuff addresses do not match" " in boomerang_rx: %p vs. %p.\n", dev->name, bus_to_virt(le32_to_cpu(vp->rx_ring[entry].addr)), @@ -1849,20 +2127,23 @@ boomerang_rx(struct device *dev) netif_rx(skb); dev->last_rx = jiffies; vp->stats.rx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + vp->stats.rx_bytes += pkt_len; +#endif } entry = (++vp->cur_rx) % RX_RING_SIZE; } /* Refill the Rx ring buffers. */ - for (; vp->dirty_rx < vp->cur_rx; vp->dirty_rx++) { + for (; vp->cur_rx - vp->dirty_rx > 0; vp->dirty_rx++) { struct sk_buff *skb; entry = vp->dirty_rx % RX_RING_SIZE; if (vp->rx_skbuff[entry] == NULL) { - skb = dev_alloc_skb(PKT_BUF_SZ); + skb = dev_alloc_skb(vp->rx_buf_sz); if (skb == NULL) break; /* Bad news! */ skb->dev = dev; /* Mark as being used by this device. */ skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ - vp->rx_ring[entry].addr = cpu_to_le32(virt_to_bus(skb->tail)); + vp->rx_ring[entry].addr = virt_to_le32desc(skb->tail); vp->rx_skbuff[entry] = skb; } vp->rx_ring[entry].status = 0; /* Clear complete bit. */ @@ -1871,25 +2152,11 @@ boomerang_rx(struct device *dev) return 0; } -static int -vortex_close(struct device *dev) +static void +vortex_down(struct net_device *dev) { struct vortex_private *vp = (struct vortex_private *)dev->priv; long ioaddr = dev->base_addr; - int i; - - dev->start = 0; - dev->tbusy = 1; - - if (vortex_debug > 1) { - printk(KERN_DEBUG"%s: vortex_close() status %4.4x, Tx status %2.2x.\n", - dev->name, inw(ioaddr + EL3_STATUS), inb(ioaddr + TxStatus)); - printk(KERN_DEBUG "%s: vortex close stats: rx_nocopy %d rx_copy %d" - " tx_queued %d Rx pre-checksummed %d.\n", - dev->name, rx_nocopy, rx_copy, queued_packet, rx_csumhits); - } - - del_timer(&vp->timer); /* Turn off statistics ASAP. We update vp->stats below. */ outw(StatsDisable, ioaddr + EL3_CMD); @@ -1902,44 +2169,66 @@ vortex_close(struct device *dev) /* Turn off thinnet power. Green! */ outw(StopCoax, ioaddr + EL3_CMD); - free_irq(dev->irq, dev); - outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD); update_stats(ioaddr, dev); - if (vp->full_bus_master_rx) { /* Free Boomerang bus master Rx buffers. */ + if (vp->full_bus_master_rx) outl(0, ioaddr + UpListPtr); + if (vp->full_bus_master_tx) + outl(0, ioaddr + DownListPtr); +} + +static int +vortex_close(struct net_device *dev) +{ + struct vortex_private *vp = (struct vortex_private *)dev->priv; + long ioaddr = dev->base_addr; + int i; + + netif_stop_tx_queue(dev); + + if (vp->msg_level & NETIF_MSG_IFDOWN) { + printk(KERN_DEBUG"%s: vortex_close() status %4.4x, Tx status %2.2x.\n", + dev->name, inw(ioaddr + EL3_STATUS), inb(ioaddr + TxStatus)); + printk(KERN_DEBUG "%s: vortex close stats: rx_nocopy %d rx_copy %d" + " tx_queued %d Rx pre-checksummed %d.\n", + dev->name, rx_nocopy, rx_copy, queued_packet, rx_csumhits); + } + + del_timer(&vp->timer); + vortex_down(dev); + free_irq(dev->irq, dev); + outw(TotalReset | 0x34, ioaddr + EL3_CMD); + + if (vp->full_bus_master_rx) { /* Free Boomerang bus master Rx buffers. */ for (i = 0; i < RX_RING_SIZE; i++) if (vp->rx_skbuff[i]) { #if LINUX_VERSION_CODE < 0x20100 vp->rx_skbuff[i]->free = 1; #endif - DEV_FREE_SKB(vp->rx_skbuff[i]); + dev_free_skb(vp->rx_skbuff[i]); vp->rx_skbuff[i] = 0; } } if (vp->full_bus_master_tx) { /* Free Boomerang bus master Tx buffers. */ - outl(0, ioaddr + DownListPtr); for (i = 0; i < TX_RING_SIZE; i++) if (vp->tx_skbuff[i]) { - DEV_FREE_SKB(vp->tx_skbuff[i]); + dev_free_skb(vp->tx_skbuff[i]); vp->tx_skbuff[i] = 0; } } - if (vp->capabilities & CapPwrMgmt) - acpi_set_WOL(dev); MOD_DEC_USE_COUNT; return 0; } -static struct net_device_stats *vortex_get_stats(struct device *dev) +static struct net_device_stats *vortex_get_stats(struct net_device *dev) { struct vortex_private *vp = (struct vortex_private *)dev->priv; unsigned long flags; - if (dev->start) { + if (netif_running(dev)) { save_flags(flags); cli(); update_stats(dev->base_addr, dev); @@ -1955,7 +2244,7 @@ static struct net_device_stats *vortex_get_stats(struct device *dev) table. This is done by checking that the ASM (!) code generated uses atomic updates with '+='. */ -static void update_stats(long ioaddr, struct device *dev) +static void update_stats(long ioaddr, struct net_device *dev) { struct vortex_private *vp = (struct vortex_private *)dev->priv; int old_window = inw(ioaddr + EL3_CMD); @@ -1978,8 +2267,8 @@ static void update_stats(long ioaddr, struct device *dev) /* Don't bother with register 9, an extension of registers 6&7. If we do use the 6&7 values the atomic update assumption above is invalid. */ + /* Rx Bytes is unreliable */ inw(ioaddr + 10); #if LINUX_VERSION_CODE > 0x020119 - vp->stats.rx_bytes += inw(ioaddr + 10); vp->stats.tx_bytes += inw(ioaddr + 12); #else inw(ioaddr + 10); @@ -1994,49 +2283,151 @@ static void update_stats(long ioaddr, struct device *dev) return; } -static int vortex_ioctl(struct device *dev, struct ifreq *rq, int cmd) +static int vortex_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { struct vortex_private *vp = (struct vortex_private *)dev->priv; long ioaddr = dev->base_addr; u16 *data = (u16 *)&rq->ifr_data; - int phy = vp->phys[0] & 0x1f; + u32 *data32 = (void *)&rq->ifr_data; + int phy = vp->phys[0]; switch(cmd) { - case SIOCDEVPRIVATE: /* Get the address of the PHY in use. */ + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ data[0] = phy; - case SIOCDEVPRIVATE+1: /* Read the specified MII register. */ + /* Fall Through */ + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + if (data[0] == 32) { /* Emulate MII for 3c59*, 3c900. */ + data[3] = 0; + switch (data[1]) { + case 0: + if (dev->if_port == XCVR_100baseTx) data[3] |= 0x2000; + if (vp->full_duplex) data[3] |= 0x0100; + break; + case 1: + if (vp->available_media & 0x02) data[3] |= 0x6000; + if (vp->available_media & 0x08) data[3] |= 0x1800; + spin_lock(&vp->window_lock); + EL3WINDOW(4); + if (inw(ioaddr + Wn4_Media) & Media_LnkBeat) data[3] |= 0x0004; + spin_unlock(&vp->window_lock); + break; + case 2: data[3] = 0x0280; break; /* OUI 00:a0:24 */ + case 3: data[3] = 0x9000; break; + default: break; + } + return 0; + } + spin_lock(&vp->window_lock); EL3WINDOW(4); data[3] = mdio_read(ioaddr, data[0] & 0x1f, data[1] & 0x1f); + spin_unlock(&vp->window_lock); return 0; - case SIOCDEVPRIVATE+2: /* Write the specified MII register */ + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ if (!capable(CAP_NET_ADMIN)) return -EPERM; + if (data[0] == vp->phys[0]) { + u16 value = data[2]; + if (vp->phys[0] == 32) { + if (data[1] == 0) { + vp->media_override = (value & 0x2000) ? + XCVR_100baseTx : XCVR_10baseT; + vp->full_duplex = (value & 0x0100) ? 1 : 0; + vp->medialock = 1; + } + return 0; + } + switch (data[1]) { + case 0: + /* Check for autonegotiation on or reset. */ + vp->medialock = (value & 0x9000) ? 0 : 1; + if (vp->medialock) + vp->full_duplex = (value & 0x0100) ? 1 : 0; + break; + case 4: vp->advertising = value; break; + } + /* Perhaps check_duplex(dev), depending on chip semantics. */ + } + spin_lock(&vp->window_lock); EL3WINDOW(4); mdio_write(ioaddr, data[0] & 0x1f, data[1] & 0x1f, data[2]); + spin_unlock(&vp->window_lock); + return 0; + case SIOCGPARAMS: + data32[0] = vp->msg_level; + data32[1] = vp->multicast_filter_limit; + data32[2] = vp->max_interrupt_work; + data32[3] = vp->rx_copybreak; + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + vp->msg_level = data32[0]; + vp->multicast_filter_limit = data32[1]; + vp->max_interrupt_work = data32[2]; + vp->rx_copybreak = data32[3]; return 0; default: return -EOPNOTSUPP; } } +static unsigned const ethernet_polynomial = 0x04c11db7U; +static inline u32 ether_crc(int length, unsigned char *data) +{ + int crc = -1; + + while(--length >= 0) { + unsigned char current_octet = *data++; + int bit; + for (bit = 0; bit < 8; bit++, current_octet >>= 1) + crc = (crc << 1) ^ + ((crc < 0) ^ (current_octet & 1) ? ethernet_polynomial : 0); + } + return crc; +} + /* Pre-Cyclone chips have no documented multicast filter, so the only - multicast setting is to receive all multicast frames. At least - the chip has a very clean way to set the mode, unlike many others. */ -static void set_rx_mode(struct device *dev) + multicast setting is to receive all multicast frames. Cyclone and later + chips have a write-only table of unknown size. + At least the chip has a very clean way to set the other filter modes. */ +static void set_rx_mode(struct net_device *dev) { + struct vortex_private *vp = (void *)dev->priv; long ioaddr = dev->base_addr; int new_mode; if (dev->flags & IFF_PROMISC) { - if (vortex_debug > 0) - printk(KERN_NOTICE "%s: Setting promiscuous mode.\n", dev->name); + /* Unconditionally log a net tap. */ + printk(KERN_NOTICE "%s: Setting promiscuous mode.\n", dev->name); new_mode = SetRxFilter|RxStation|RxMulticast|RxBroadcast|RxProm; - } else if ((dev->mc_list) || (dev->flags & IFF_ALLMULTI)) { + } else if (dev->flags & IFF_ALLMULTI) { + new_mode = SetRxFilter|RxStation|RxMulticast|RxBroadcast; + } else if ((vp->drv_flags & HAS_V2_TX) && + dev->mc_count < vp->multicast_filter_limit) { + struct dev_mc_list *mclist; + int i; + for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; + i++, mclist = mclist->next) { + int filter_bit = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0xff; + if (test_bit(filter_bit, vp->mc_filter)) + continue; + outw(SetFilterBit | 0x0400 | filter_bit, ioaddr + EL3_CMD); + set_bit(filter_bit, vp->mc_filter); + } + + new_mode = SetRxFilter|RxStation|RxMulticastHash|RxBroadcast; + } else if (dev->mc_count) { new_mode = SetRxFilter|RxStation|RxMulticast|RxBroadcast; } else new_mode = SetRxFilter | RxStation | RxBroadcast; - outw(new_mode, ioaddr + EL3_CMD); + if (vp->rx_mode != new_mode) { + vp->rx_mode = new_mode; + outw(new_mode, ioaddr + EL3_CMD); + } } @@ -2090,19 +2481,15 @@ static int mdio_read(long ioaddr, int phy_id, int location) outw(dataval | MDIO_SHIFT_CLK, mdio_addr); mdio_delay(); } - /* Read the two transition, 16 data, and wire-idle bits. */ - for (i = 19; i > 0; i--) { + /* Read the two transition and 16 data bits. */ + for (i = 18; i > 0; i--) { outw(MDIO_ENB_IN, mdio_addr); mdio_delay(); retval = (retval << 1) | ((inw(mdio_addr) & MDIO_DATA_READ) ? 1 : 0); outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); mdio_delay(); } -#if 0 - return (retval>>1) & 0x1ffff; -#else - return retval & 0x20000 ? 0xffff : retval>>1 & 0xffff; -#endif + return retval & 0x10000 ? 0xffff : retval & 0xffff; } static void mdio_write(long ioaddr, int phy_id, int location, int value) @@ -2123,19 +2510,15 @@ static void mdio_write(long ioaddr, int phy_id, int location, int value) mdio_delay(); } /* Leave the interface idle. */ - for (i = 1; i >= 0; i--) { - outw(MDIO_ENB_IN, mdio_addr); - mdio_delay(); - outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); - mdio_delay(); - } + mdio_sync(ioaddr, 32); return; } +#if ! defined(NO_PCI) /* ACPI: Advanced Configuration and Power Interface. */ /* Set Wake-On-LAN mode and put the board into D3 (power-down) state. */ -static void acpi_set_WOL(struct device *dev) +static void acpi_set_WOL(struct net_device *dev) { struct vortex_private *vp = (struct vortex_private *)dev->priv; long ioaddr = dev->base_addr; @@ -2147,57 +2530,105 @@ static void acpi_set_WOL(struct device *dev) outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD); outw(RxEnable, ioaddr + EL3_CMD); /* Change the power state to D3; RxEnable doesn't take effect. */ - pcibios_write_config_word(vp->pci_bus, vp->pci_devfn, 0xe0, 0x8103); + pci_write_config_word(vp->pci_dev, 0xe0, 0x8103); } -/* Change from D3 (sleep) to D0 (active). - Problem: The Cyclone forgets all PCI config info during the transition! */ -static void acpi_wake(int bus, int devfn) +#endif + +static int pwr_event(void *dev_instance, int event) { - u32 base0, base1, romaddr; - u16 pci_command, pwr_command; - u8 pci_latency, pci_cacheline, irq; + struct net_device *dev = dev_instance; + struct vortex_private *np = (struct vortex_private *)dev->priv; + long ioaddr = dev->base_addr; - pcibios_read_config_word(bus, devfn, 0xe0, &pwr_command); - if ((pwr_command & 3) == 0) - return; - pcibios_read_config_word( bus, devfn, PCI_COMMAND, &pci_command); - pcibios_read_config_dword(bus, devfn, PCI_BASE_ADDRESS_0, &base0); - pcibios_read_config_dword(bus, devfn, PCI_BASE_ADDRESS_1, &base1); - pcibios_read_config_dword(bus, devfn, PCI_ROM_ADDRESS, &romaddr); - pcibios_read_config_byte( bus, devfn, PCI_LATENCY_TIMER, &pci_latency); - pcibios_read_config_byte( bus, devfn, PCI_CACHE_LINE_SIZE, &pci_cacheline); - pcibios_read_config_byte( bus, devfn, PCI_INTERRUPT_LINE, &irq); - - pcibios_write_config_word( bus, devfn, 0xe0, 0x0000); - pcibios_write_config_dword(bus, devfn, PCI_BASE_ADDRESS_0, base0); - pcibios_write_config_dword(bus, devfn, PCI_BASE_ADDRESS_1, base1); - pcibios_write_config_dword(bus, devfn, PCI_ROM_ADDRESS, romaddr); - pcibios_write_config_byte( bus, devfn, PCI_INTERRUPT_LINE, irq); - pcibios_write_config_byte( bus, devfn, PCI_LATENCY_TIMER, pci_latency); - pcibios_write_config_byte( bus, devfn, PCI_CACHE_LINE_SIZE, pci_cacheline); - pcibios_write_config_word( bus, devfn, PCI_COMMAND, pci_command | 5); + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_ATTACH: + MOD_INC_USE_COUNT; + break; + case DRV_SUSPEND: + vortex_down(dev); + netif_stop_tx_queue(dev); + if (np->capabilities & CapPwrMgmt) + acpi_set_WOL(dev); + break; + case DRV_RESUME: + /* This is incomplete: the actions are very chip specific. */ + activate_xcvr(dev); + set_media_type(dev); + start_operation(dev); + np->rx_mode = 0; + set_rx_mode(dev); + start_operation1(dev); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + unregister_netdev(dev); + release_region(dev->base_addr, pci_tbl[np->chip_id].io_size); +#ifndef USE_IO_OPS + iounmap((char *)dev->base_addr); +#endif + for (devp = &root_vortex_dev; *devp; devp = next) { + next = &((struct vortex_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (np->priv_addr) + kfree(np->priv_addr); + kfree(dev); + MOD_DEC_USE_COUNT; + break; + } + case DRV_PWR_WakeOn: + if ( ! (np->capabilities & CapPwrMgmt)) + return -1; + EL3WINDOW(7); + /* Power up on: 1=Downloaded Filter, 2=Magic Packets, 4=Link Status.*/ + outw(2, ioaddr + 12); + /* This RxEnable doesn't take effect if we immediately change to D3. */ + outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD); + outw(RxEnable, ioaddr + EL3_CMD); + acpi_set_pwr_state(np->pci_dev, ACPI_D3); + break; + } + return 0; } #ifdef MODULE void cleanup_module(void) { - struct device *next_dev; + struct net_device *next_dev; #ifdef CARDBUS unregister_driver(&vortex_ops); +#elif ! defined(NO_PCI) + pci_drv_unregister(&vortex_drv_id); #endif /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ while (root_vortex_dev) { struct vortex_private *vp=(void *)(root_vortex_dev->priv); - next_dev = vp->next_module; unregister_netdev(root_vortex_dev); - outw(TotalReset, root_vortex_dev->base_addr + EL3_CMD); + outw(TotalReset | 0x14, root_vortex_dev->base_addr + EL3_CMD); + if (vp->capabilities & CapPwrMgmt) + acpi_set_WOL(root_vortex_dev); +#ifdef USE_MEM_OPS + iounmap((char *)root_vortex_dev->base_addr); +#else release_region(root_vortex_dev->base_addr, pci_tbl[vp->chip_id].io_size); +#endif + next_dev = vp->next_module; + if (vp->priv_addr) + kfree(vp->priv_addr); kfree(root_vortex_dev); - kfree(vp->priv_addr); root_vortex_dev = next_dev; } } @@ -2206,9 +2637,10 @@ void cleanup_module(void) /* * Local variables: - * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c 3c59x.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" - * SMP-compile-command: "gcc -D__SMP__ -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c 3c59x.c" - * cardbus-compile-command: "gcc -DCARDBUS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c 3c59x.c -o 3c575_cb.o -I/usr/src/linux/pcmcia-cs-3.0.9/include/" + * compile-command: "make KERNVER=`uname -r` 3c59x.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c 3c59x.c" + * cardbus-compile-command: "gcc -DCARDBUS -DMODULE -Wall -Wstrict-prototypes -O6 -c 3c59x.c -o 3c575_cb.o -I/usr/src/pcmcia/include/" + * eisa-only-compile: "gcc -DNO_PCI -DMODULE -O6 -c 3c59x.c -o 3c597.o" * c-indent-level: 4 * c-basic-offset: 4 * tab-width: 4 diff --git a/linux/src/drivers/net/cb_shim.c b/linux/src/drivers/net/cb_shim.c new file mode 100644 index 0000000..599b5bb --- /dev/null +++ b/linux/src/drivers/net/cb_shim.c @@ -0,0 +1,296 @@ +/* cb_shim.c: Linux CardBus device support code. */ +/* + Written 1999-2002 by Donald Becker. + + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by + reference. This is not a documented interface. Drivers incorporating + or interacting with these functions are derivative works and thus + are covered the GPL. They must include an explicit GPL notice. + + This code provides a shim to allow newer drivers to interact with the + older Cardbus driver activation code. The functions supported are + attach, suspend, power-off, resume and eject. + + The author may be reached as becker@scyld.com, or + Donald Becker + Scyld Computing Corporation + 410 Severn Ave., Suite 210 + Annapolis MD 21403 + + Support and updates available at + http://www.scyld.com/network/drivers.html + + Other contributers: (none yet) +*/ + +static const char version1[] = +"cb_shim.c:v1.03 7/12/2002 Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/linux/drivers.html\n"; + +/* Module options. */ +static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ + +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + +#include <linux/version.h> +#if defined(MODVERSIONS) +#include <linux/modversions.h> +#endif +#include <linux/module.h> + +#include <linux/kernel.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else +#include <linux/malloc.h> +#endif +#include <linux/netdevice.h> +#include <linux/pci.h> +#include <asm/io.h> + +/* These might be awkward to locate. */ +#include <pcmcia/driver_ops.h> +#include "pci-scan.h" +#include "kern_compat.h" + +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); +MODULE_DESCRIPTION("Hot-swap-PCI and Cardbus event dispatch"); +MODULE_LICENSE("GPL"); +MODULE_PARM(debug, "i"); +MODULE_PARM_DESC(debug, "Enable additional status messages (0-7)"); + +/* Note: this is used in a slightly sleazy manner: it is passed to routines + that expect and return just dev_node_t. However using the too-simple + dev_node_t complicates devices management -- older drivers had to + look up dev_node_t.name in their private list. */ + +struct registered_pci_device { + struct dev_node_t node; + int magic; + struct registered_pci_device *next; + struct drv_id_info *drv_info; + struct pci_dev *pci_loc; + void *dev_instance; +} static *root_pci_devs = 0; + +struct drv_shim { + struct drv_id_info *did; + struct driver_operations drv_ops; + int magic; + struct drv_shim *next; +} static *root_drv_id = 0; + +static void drv_power_op(struct dev_node_t *node, enum drv_pwr_action action) +{ + struct registered_pci_device **devp, **next, *rpin = (void *)node, *rp; + if (debug > 1) + printk(KERN_DEBUG "power operation(%s, %d).\n", + rpin->drv_info->name, action); + /* With our wrapper structure we can almost do + rpin->drv_info->pwr_event(rpin->dev_instance, action); + But the detach operation requires us to remove the object from the + list, so we check for uncontrolled "ghost" devices. */ + for (devp = &root_pci_devs; *devp; devp = next) { + rp = *devp; + next = &rp->next; + if (rp == rpin) { + if (rp->drv_info->pwr_event) + rp->drv_info->pwr_event((*devp)->dev_instance, action); + else + printk(KERN_ERR "No power event hander for driver %s.\n", + rpin->drv_info->name); + if (action == DRV_DETACH) { + kfree(rp); + *devp = *next; + MOD_DEC_USE_COUNT; + } + return; + } + } + if (debug) + printk(KERN_WARNING "power operation(%s, %d) for a ghost device.\n", + node->dev_name, action); +} +/* Wrappers / static lambdas. */ +static void drv_suspend(struct dev_node_t *node) +{ + drv_power_op(node, DRV_SUSPEND); +} +static void drv_resume(struct dev_node_t *node) +{ + drv_power_op(node, DRV_RESUME); +} +static void drv_detach(struct dev_node_t *node) +{ + drv_power_op(node, DRV_DETACH); +} + +/* The CardBus interaction does not identify the driver the attach() is + for, thus we must search for the ID in all PCI device tables. + While ugly, we likely only have one driver loaded anyway. +*/ +static dev_node_t *drv_attach(struct dev_locator_t *loc) +{ + struct drv_shim *dp; + struct drv_id_info *drv_id = NULL; + struct pci_id_info *pci_tbl = NULL; + u32 pci_id, subsys_id, pci_rev, pciaddr; + u8 irq; + int chip_idx = 0, pci_flags, bus, devfn; + long ioaddr; + void *newdev; + + if (debug > 1) + printk(KERN_INFO "drv_attach()\n"); + if (loc->bus != LOC_PCI) return NULL; + bus = loc->b.pci.bus; devfn = loc->b.pci.devfn; + if (debug > 1) + printk(KERN_DEBUG "drv_attach(bus %d, function %d)\n", bus, devfn); + + pcibios_read_config_dword(bus, devfn, PCI_VENDOR_ID, &pci_id); + pcibios_read_config_dword(bus, devfn, PCI_SUBSYSTEM_ID, &subsys_id); + pcibios_read_config_dword(bus, devfn, PCI_REVISION_ID, &pci_rev); + pcibios_read_config_byte(bus, devfn, PCI_INTERRUPT_LINE, &irq); + for (dp = root_drv_id; dp; dp = dp->next) { + drv_id = dp->did; + pci_tbl = drv_id->pci_dev_tbl; + for (chip_idx = 0; pci_tbl[chip_idx].name; chip_idx++) { + struct pci_id_info *chip = &pci_tbl[chip_idx]; + if ((pci_id & chip->id.pci_mask) == chip->id.pci + && (subsys_id & chip->id.subsystem_mask) == chip->id.subsystem + && (pci_rev & chip->id.revision_mask) == chip->id.revision) + break; + } + if (pci_tbl[chip_idx].name) /* Compiled out! */ + break; + } + if (dp == 0) { + printk(KERN_WARNING "No driver match for device %8.8x at %d/%d.\n", + pci_id, bus, devfn); + return 0; + } + pci_flags = pci_tbl[chip_idx].pci_flags; + pcibios_read_config_dword(bus, devfn, ((pci_flags >> 2) & 0x1C) + 0x10, + &pciaddr); + if ((pciaddr & PCI_BASE_ADDRESS_SPACE_IO)) { + ioaddr = pciaddr & PCI_BASE_ADDRESS_IO_MASK; + } else + ioaddr = (long)ioremap(pciaddr & PCI_BASE_ADDRESS_MEM_MASK, + pci_tbl[chip_idx].io_size); + if (ioaddr == 0 || irq == 0) { + printk(KERN_ERR "The %s at %d/%d was not assigned an %s.\n" + KERN_ERR " It will not be activated.\n", + pci_tbl[chip_idx].name, bus, devfn, + ioaddr == 0 ? "address" : "IRQ"); + return NULL; + } + printk(KERN_INFO "Found a %s at %d/%d address 0x%x->0x%lx IRQ %d.\n", + pci_tbl[chip_idx].name, bus, devfn, pciaddr, ioaddr, irq); + { + u16 pci_command; + pcibios_read_config_word(bus, devfn, PCI_COMMAND, &pci_command); + printk(KERN_INFO "%s at %d/%d command 0x%x.\n", + pci_tbl[chip_idx].name, bus, devfn, pci_command); + } + + newdev = drv_id->probe1(pci_find_slot(bus, devfn), 0, + ioaddr, irq, chip_idx, 0); + if (newdev) { + struct registered_pci_device *hsdev = + kmalloc(sizeof(struct registered_pci_device), GFP_KERNEL); + if (drv_id->pci_class == PCI_CLASS_NETWORK_ETHERNET<<8) + strcpy(hsdev->node.dev_name, ((struct net_device *)newdev)->name); + hsdev->node.major = hsdev->node.minor = 0; + hsdev->node.next = NULL; + hsdev->drv_info = drv_id; + hsdev->dev_instance = newdev; + hsdev->next = root_pci_devs; + root_pci_devs = hsdev; + drv_id->pwr_event(newdev, DRV_ATTACH); + MOD_INC_USE_COUNT; + return &hsdev->node; + } + return NULL; +} + +/* Add/remove a driver ID structure to our private list of known drivers. */ +int do_cb_register(struct drv_id_info *did) +{ + struct driver_operations *dop; + struct drv_shim *dshim = kmalloc(sizeof(*dshim), GFP_KERNEL); + if (dshim == 0) + return 0; + if (debug > 1) + printk(KERN_INFO "Registering driver support for '%s'.\n", + did->name); + MOD_INC_USE_COUNT; + dshim->did = did; + dop = &dshim->drv_ops; + dop->name = (char *)did->name; + dop->attach = drv_attach; + dop->suspend = drv_suspend; + dop->resume = drv_resume; + dop->detach = drv_detach; + dshim->next = root_drv_id; + root_drv_id = dshim; + return register_driver(dop); +} + +void do_cb_unregister(struct drv_id_info *did) +{ + struct drv_shim **dp; + for (dp = &root_drv_id; *dp; dp = &(*dp)->next) + if ((*dp)->did == did) { + struct drv_shim *dshim = *dp; + unregister_driver(&dshim->drv_ops); + *dp = dshim->next; + kfree(dshim); + MOD_DEC_USE_COUNT; + return; + } +} + +extern int (*register_hotswap_hook)(struct drv_id_info *did); +extern void (*unregister_hotswap_hook)(struct drv_id_info *did); + +int (*old_cb_hook)(struct drv_id_info *did); +void (*old_un_cb_hook)(struct drv_id_info *did); + +int init_module(void) +{ + if (debug) + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + old_cb_hook = register_hotswap_hook; + old_un_cb_hook = unregister_hotswap_hook; + register_hotswap_hook = do_cb_register; + unregister_hotswap_hook = do_cb_unregister; + return 0; +} +void cleanup_module(void) +{ + register_hotswap_hook = old_cb_hook; + unregister_hotswap_hook = old_un_cb_hook; + return; +} + + +/* + * Local variables: + * compile-command: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c cb_shim.c -I/usr/include/ -I/usr/src/pcmcia/include/" + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ + diff --git a/linux/src/drivers/net/eepro100.c b/linux/src/drivers/net/eepro100.c index a2a6e30..6909cdc 100644 --- a/linux/src/drivers/net/eepro100.c +++ b/linux/src/drivers/net/eepro100.c @@ -1,146 +1,166 @@ /* drivers/net/eepro100.c: An Intel i82557-559 Ethernet driver for Linux. */ /* - NOTICE: this version of the driver is supposed to work with 2.2 kernels. - Written 1996-1999 by Donald Becker. + Written 1998-2003 by Donald Becker. - This software may be used and distributed according to the terms - of the GNU Public License, incorporated herein by reference. + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This driver is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. This driver is for the Intel EtherExpress Pro100 (Speedo3) design. It should work with all i82557/558/559 boards. To use as a module, use the compile-command at the end of the file. - The author may be reached as becker@CESDIS.usra.edu, or C/O - Center of Excellence in Space Data and Information Sciences - Code 930.5, NASA Goddard Space Flight Center, Greenbelt MD 20771 + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 914 Bay Ridge Road, Suite 220 + Annapolis MD 21403 + For updates see - http://cesdis.gsfc.nasa.gov/linux/drivers/eepro100.html + http://www.scyld.com/network/eepro100.html For installation instructions - http://cesdis.gsfc.nasa.gov/linux/misc/modules.html - There is a Majordomo mailing list based at - linux-eepro100@cesdis.gsfc.nasa.gov - - The driver also contains updates by different kernel developers. - This driver clone is maintained by Andrey V. Savochkin <saw@saw.sw.com.sg>. - Please use this email address and linux-kernel mailing list for bug reports. - - Modification history: - 2000 Mar 24 Dragan Stancevic <visitor@valinux.com> - Disabled FC and ER, to avoid lockups when when we get FCP interrupts. - 2000 May 27 Andrey Moruga <moruga@sw.com.sg> - Code duplication for 82559ER support was removed. - Accurate handling of all supported chips was implemented. - Some fixes in 2.3 clone of the driver were ported. - 2000 May 30 Dragan Stancevic <visitor@valinux.com> and - Andrey Moruga <moruga@sw.com.sg> - Honor PortReset timing specification. - 2000 Jul 25 Dragan Stancevic <visitor@valinux.com> - Changed to MMIO, resized FIFOs, resized rings, changed ISR timeout - Problem reported by: - Marc MERLIN <merlin@valinux.com> - 2000 Nov 15 Dragan Stancevic <visitor@valinux.com> - Changed command completion time and added debug info as to which - CMD timed out. Problem reported by: - "Ulrich Windl" <Ulrich.Windl@rz.uni-regensburg.de> + http://www.scyld.com/network/modules.html + The information and support mailing lists are based at + http://www.scyld.com/mailman/listinfo/ */ -/*#define USE_IO*/ -static const char *version = -"eepro100.c:v1.09j-t 9/29/99 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/eepro100.html\n" -"eepro100.c: $Revision: 1.2 $ 2000/05/31 Modified by Andrey V. Savochkin <saw@saw.sw.com.sg> and others\n" -"eepro100.c: VA Linux custom, Dragan Stancevic <visitor@valinux.com> 2000/11/15\n"; +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"eepro100.c:v1.28 7/22/2003 Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/network/eepro100.html\n"; + + +/* The user-configurable values. + These may be modified when a driver module is loaded. + The first five are undocumented and spelled per Intel recommendations. +*/ -/* A few user-configurable values that apply to all boards. - First set is undocumented and spelled per Intel recommendations. */ +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; static int congenb = 0; /* Enable congestion control in the DP83840. */ -static int txfifo = 0; /* Tx FIFO threshold in 4 byte units, 0-15 */ -static int rxfifo = 0xF; /* Rx FIFO threshold, default 32 bytes. */ +static int txfifo = 8; /* Tx FIFO threshold in 4 byte units, 0-15 */ +static int rxfifo = 8; /* Rx FIFO threshold, default 32 bytes. */ /* Tx/Rx DMA burst length, 0-127, 0 == no preemption, tx==128 -> disabled. */ static int txdmacount = 128; static int rxdmacount = 0; -/* Set the copy breakpoint for the copy-only-tiny-buffer Rx method. - Lower values use more memory, but are faster. */ -#if defined(__alpha__) || defined(__sparc__) -/* force copying of all packets to avoid unaligned accesses on Alpha */ -static int rx_copybreak = 1518; -#else +/* Set the copy breakpoint for the copy-only-tiny-frame Rx method. + Lower values use more memory, but are faster. + Setting to > 1518 disables this feature. */ static int rx_copybreak = 200; -#endif /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ -static int max_interrupt_work = 200; +static int max_interrupt_work = 20; /* Maximum number of multicast addresses to filter (vs. rx-all-multicast) */ static int multicast_filter_limit = 64; -/* 'options' is used to pass a transceiver override or full-duplex flag - e.g. "options=16" for FD, "options=32" for 100mbps-only. */ -static int full_duplex[] = {-1, -1, -1, -1, -1, -1, -1, -1}; -static int options[] = {-1, -1, -1, -1, -1, -1, -1, -1}; -#ifdef MODULE -static int debug = -1; /* The debug level */ -#endif +/* Used to pass the media type, etc. + Both 'options[]' and 'full_duplex[]' should exist for driver + interoperability, however setting full_duplex[] is deprecated. + The media type is usually passed in 'options[]'. + Use option values 0x10/0x20 for 10Mbps, 0x100,0x200 for 100Mbps. + Use option values 0x10 and 0x100 for forcing half duplex fixed speed. + Use option values 0x20 and 0x200 for forcing full duplex operation. +*/ +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; + +/* Operational parameters that are set at compile time. */ -/* A few values that may be tweaked. */ /* The ring sizes should be a power of two for efficiency. */ -#define TX_RING_SIZE 64 -#define RX_RING_SIZE 64 -/* How much slots multicast filter setup may take. - Do not descrease without changing set_rx_mode() implementaion. */ -#define TX_MULTICAST_SIZE 2 -#define TX_MULTICAST_RESERV (TX_MULTICAST_SIZE*2) -/* Actual number of TX packets queued, must be - <= TX_RING_SIZE-TX_MULTICAST_RESERV. */ -#define TX_QUEUE_LIMIT (TX_RING_SIZE-TX_MULTICAST_RESERV) -/* Hysteresis marking queue as no longer full. */ -#define TX_QUEUE_UNFULL (TX_QUEUE_LIMIT-4) +#define TX_RING_SIZE 32 /* Effectively 2 entries fewer. */ +#define RX_RING_SIZE 32 +/* Actual number of TX packets queued, must be <= TX_RING_SIZE-2. */ +#define TX_QUEUE_LIMIT 12 +#define TX_QUEUE_UNFULL 8 /* Hysteresis marking queue as no longer full. */ /* Operational parameters that usually are not changed. */ /* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT (2*HZ) -/* Size of an pre-allocated Rx buffer: <Ethernet MTU> + slack.*/ +#define TX_TIMEOUT (6*HZ) + +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. This is not a limit, + but a way to keep a consistent allocation size among drivers. + */ #define PKT_BUF_SZ 1536 -#if !defined(__OPTIMIZE__) || !defined(__KERNEL__) +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) #warning You must compile this file with the correct options! #warning See the last lines of the source file. #error You must compile this driver with "-O". #endif +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + #include <linux/version.h> -#include <linux/module.h> #if defined(MODVERSIONS) #include <linux/modversions.h> #endif +#include <linux/module.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/timer.h> #include <linux/errno.h> #include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else #include <linux/malloc.h> +#endif #include <linux/interrupt.h> #include <linux/pci.h> -#include <asm/spinlock.h> - -#include <asm/bitops.h> -#include <asm/io.h> - #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/delay.h> +#include <asm/bitops.h> +#include <asm/io.h> -#if defined(MODULE) -MODULE_AUTHOR("Maintainer: Andrey V. Savochkin <saw@saw.sw.com.sg>"); -MODULE_DESCRIPTION("Intel i82557/i82558 PCI EtherExpressPro driver"); +#if LINUX_VERSION_CODE >= 0x20300 +#include <linux/spinlock.h> +#elif LINUX_VERSION_CODE >= 0x20200 +#include <asm/spinlock.h> +#endif + +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif + +/* Condensed bus+endian portability operations. */ +#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) +#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) + +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif + +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); +MODULE_DESCRIPTION("Intel PCI EtherExpressPro 100 driver"); +MODULE_LICENSE("GPL"); MODULE_PARM(debug, "i"); -MODULE_PARM(options, "1-" __MODULE_STRING(8) "i"); -MODULE_PARM(full_duplex, "1-" __MODULE_STRING(8) "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); MODULE_PARM(congenb, "i"); MODULE_PARM(txfifo, "i"); MODULE_PARM(rxfifo, "i"); @@ -149,42 +169,21 @@ MODULE_PARM(rxdmacount, "i"); MODULE_PARM(rx_copybreak, "i"); MODULE_PARM(max_interrupt_work, "i"); MODULE_PARM(multicast_filter_limit, "i"); +#ifdef MODULE_PARM_DESC +MODULE_PARM_DESC(debug, "EEPro100 message level (0-31)"); +MODULE_PARM_DESC(options, + "EEPro100: force fixed speed+duplex 0x10 0x20 0x100 0x200"); +MODULE_PARM_DESC(max_interrupt_work, + "EEPro100 maximum events handled per interrupt"); +MODULE_PARM_DESC(full_duplex, "EEPro100 set to forced full duplex when not 0" + " (deprecated)"); +MODULE_PARM_DESC(rx_copybreak, + "EEPro100 copy breakpoint for copy-only-tiny-frames"); +MODULE_PARM_DESC(multicast_filter_limit, + "EEPro100 breakpoint for switching to Rx-all-multicast"); +/* Other settings are undocumented per Intel recommendation. */ #endif -#define RUN_AT(x) (jiffies + (x)) -/* Condensed bus+endian portability operations. */ -#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) -#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) - -#define net_device device -#define pci_base_address(p, n) (p)->base_address[n] - -#define dev_free_skb(skb) dev_kfree_skb(skb); -#define netif_wake_queue(dev) do { \ - clear_bit(0, (void*)&dev->tbusy); \ - mark_bh(NET_BH); \ - } while(0) -#define netif_start_queue(dev) clear_bit(0, (void*)&dev->tbusy) -#define netif_stop_queue(dev) set_bit(0, (void*)&dev->tbusy) -#ifndef PCI_DEVICE_ID_INTEL_82559ER -#define PCI_DEVICE_ID_INTEL_82559ER 0x1209 -#endif -#ifndef PCI_DEVICE_ID_INTEL_ID1029 -#define PCI_DEVICE_ID_INTEL_ID1029 0x1029 -#endif -#ifndef PCI_DEVICE_ID_INTEL_ID1030 -#define PCI_DEVICE_ID_INTEL_ID1030 0x1030 -#endif -#ifndef PCI_DEVICE_ID_INTEL_ID2449 -#define PCI_DEVICE_ID_INTEL_ID2449 0x2449 -#endif - -/* The total I/O port extent of the board. - The registers beyond 0x18 only exist on the i82558. */ -#define SPEEDO3_TOTAL_SIZE 0x20 - -int speedo_debug = 1; - /* Theory of Operation @@ -234,7 +233,7 @@ have a indirect pointer to the skbuff data section. Each Tx command block (TxBD). A fixed ring of these TxCB+TxBD pairs are kept as part of the speedo_private data structure for each adapter instance. -The newer i82558 explicitly supports this structure, and can read the two +The i82558 and later explicitly supports this structure, and can read the two TxBDs in the same PCI burst as the TxCB. This ring structure is used for all normal transmit packets, but the @@ -245,7 +244,7 @@ commands we convert the next free descriptor on the ring to a NoOp, and point that descriptor's link to the complex command. An additional complexity of these non-transmit commands are that they may be -added asynchronous to the normal transmit queue, so we disable interrupts +added asynchronous to the normal transmit queue, so we set a lock whenever the Tx descriptor ring is manipulated. A notable aspect of these special configure commands is that they do @@ -257,27 +256,16 @@ is not a problem. The tx_ring entry can be still safely reused, as the tx_skbuff[] entry is always empty for config_cmd and mc_setup frames. Commands may have bits set e.g. CmdSuspend in the command word to either -suspend or stop the transmit/command unit. This driver always flags the last -command with CmdSuspend, erases the CmdSuspend in the previous command, and -then issues a CU_RESUME. -Note: Watch out for the potential race condition here: imagine - erasing the previous suspend - the chip processes the previous command - the chip processes the final command, and suspends - doing the CU_RESUME - the chip processes the next-yet-valid post-final-command. -So blindly sending a CU_RESUME is only safe if we do it immediately after -after erasing the previous CmdSuspend, without the possibility of an -intervening delay. Thus the resume command is always within the -interrupts-disabled region. This is a timing dependence, but handling this -condition in a timing-independent way would considerably complicate the code. +suspend or stop the transmit/command unit. This driver always initializes +the current command with CmdSuspend before erasing the CmdSuspend in the +previous command, and only then issues a CU_RESUME. Note: In previous generation Intel chips, restarting the command unit was a notoriously slow process. This is presumably no longer true. IIIC. Receive structure -Because of the bus-master support on the Speedo3 this driver uses the new +Because of the bus-master support on the Speedo3 this driver uses the SKBUFF_RX_COPYBREAK scheme, rather than a fixed intermediate receive buffer. This scheme allocates full-sized skbuffs as receive buffers. The value SKBUFF_RX_COPYBREAK is used as the copying breakpoint: it is chosen to @@ -291,6 +279,24 @@ allocate a new, minimally-sized skbuff. For large frames the copying cost is non-trivial, and the larger copy might flush the cache of useful data, so we pass up the skbuff the packet was received into. +IIID. Synchronization +The driver runs as two independent, single-threaded flows of control. One +is the send-packet routine, which enforces single-threaded use by the +dev->tbusy flag. The other thread is the interrupt handler, which is single +threaded by the hardware and other software. + +The send packet thread has partial control over the Tx ring and 'dev->tbusy' +flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next +queue slot is empty, it clears the tbusy flag when finished otherwise it sets +the 'sp->tx_full' flag. + +The interrupt handler has exclusive control over the Rx ring and records stats +from the Tx ring. (The Tx-done interrupt can't be selectively turned off, so +we can't avoid the interrupt overhead by having the Tx routine reap the Tx +stats.) After reaping the stats, it marks the queue entry as empty by setting +the 'base' to zero. Iff the 'sp->tx_full' flag is set, it clears both the +tx_full and tbusy flags. + IV. Notes Thanks to Steve Williams of Intel for arranging the non-disclosure agreement @@ -300,11 +306,13 @@ having to sign an Intel NDA when I'm helping Intel sell their own product! */ /* This table drives the PCI probe routines. */ -static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, - int pci_devfn, long ioaddr, - int chip_idx, int card_idx); +static void *speedo_found1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int fnd_cnt); +static int speedo_pwr_event(void *dev_instance, int event); +enum chip_capability_flags { ResetMII=1, HasChksum=2}; -#ifdef USE_IO +/* I/O registers beyond 0x18 do not exist on the i82557. */ +#ifdef USE_IO_OPS #define SPEEDO_IOTYPE PCI_USES_MASTER|PCI_USES_IO|PCI_ADDR1 #define SPEEDO_SIZE 32 #else @@ -312,48 +320,70 @@ static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, #define SPEEDO_SIZE 0x1000 #endif -enum pci_flags_bit { - PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4, - PCI_ADDR0=0x10<<0, PCI_ADDR1=0x10<<1, PCI_ADDR2=0x10<<2, PCI_ADDR3=0x10<<3, -}; -struct pci_id_info { - const char *name; - u16 vendor_id, device_id; - int pci_index; -} static pci_tbl[] = { - { "Intel PCI EtherExpress Pro100 82557", - PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82557, - 0 - }, - { "Intel PCI EtherExpress Pro100 82559ER", - PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82559ER, - 0 - }, - { "Intel PCI EtherExpress Pro100 ID1029", - PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ID1029, - 0 - }, - { "Intel Corporation 82559 InBusiness 10/100", - PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ID1030, - 0 - }, - { "Intel PCI EtherExpress Pro100 82562EM", - PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ID2449, - 0 - }, - {0,} /* 0 terminated list. */ +struct pci_id_info static pci_id_tbl[] = { + {"Intel PCI EtherExpress Pro100 82865", { 0x12278086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel PCI EtherExpress Pro100 Smart (i960RP/RD)", + { 0x12288086, 0xffffffff,}, SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel i82559 rev 8", { 0x12298086, ~0, 0,0, 8,0xff}, + SPEEDO_IOTYPE, SPEEDO_SIZE, HasChksum, }, + {"Intel PCI EtherExpress Pro100", { 0x12298086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel EtherExpress Pro/100+ i82559ER", { 0x12098086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, ResetMII, }, + {"Intel EtherExpress Pro/100 type 1029", { 0x10298086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel EtherExpress Pro/100 type 1030", { 0x10308086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 V Network", { 0x24498086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel PCI LAN0 Controller 82801E", { 0x24598086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel PCI LAN1 Controller 82801E", { 0x245D8086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 VE (type 1031)", { 0x10318086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 VE (type 1032)", { 0x10328086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 VE (type 1033)", { 0x10338086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 VE (type 1034)", { 0x10348086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 VE (type 1035)", { 0x10358086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 VM (type 1038)", { 0x10388086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 VM (type 1039)", { 0x10398086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 VM (type 103a)", { 0x103a8086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"HP/Compaq D510 Intel Pro/100 VM", + { 0x103b8086, 0xffffffff, 0x00120e11, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 VM (type 103b)", { 0x103b8086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 VE (type 103D)", { 0x103d8086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 VE (type 103E)", { 0x103e8086, 0xffffffff,}, + SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel EtherExpress Pro/100 865G Northbridge type 1051", + { 0x10518086, 0xffffffff,}, SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel PCI to PCI Bridge EtherExpress Pro100 Server Adapter", + { 0x52008086, 0xffffffff,}, SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel PCI EtherExpress Pro100 Server Adapter", + { 0x52018086, 0xffffffff,}, SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 VM (unknown type series 1030)", + { 0x10308086, 0xfff0ffff,}, SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {"Intel Pro/100 (unknown type series 1050)", + { 0x10508086, 0xfff0ffff,}, SPEEDO_IOTYPE, SPEEDO_SIZE, 0, }, + {0,}, /* 0 terminated list. */ }; -static inline unsigned int io_inw(unsigned long port) -{ - return inw(port); -} -static inline void io_outw(unsigned int val, unsigned long port) -{ - outw(val, port); -} +struct drv_id_info eepro100_drv_id = { + "eepro100", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, + speedo_found1, speedo_pwr_event, }; -#ifndef USE_IO +#ifndef USE_IO_OPS #undef inb #undef inw #undef inl @@ -368,27 +398,6 @@ static inline void io_outw(unsigned int val, unsigned long port) #define outl writel #endif -/* How to wait for the command unit to accept a command. - Typically this takes 0 ticks. */ -static inline void wait_for_cmd_done(long cmd_ioaddr) -{ - int wait = 20000; - char cmd_reg1, cmd_reg2; - do ; - while((cmd_reg1 = inb(cmd_ioaddr)) && (--wait >= 0)); - - /* Last chance to change your mind --Dragan*/ - if (wait < 0){ - cmd_reg2 = inb(cmd_ioaddr); - if(cmd_reg2){ - printk(KERN_ALERT "eepro100: cmd_wait for(%#2.2x) timedout with(%#2.2x)!\n", - cmd_reg1, cmd_reg2); - - } - } - -} - /* Offsets to the various registers. All accesses need not be longword aligned. */ enum speedo_offsets { @@ -408,28 +417,36 @@ enum commands { CmdIntr = 0x20000000, /* Interrupt after completion. */ CmdTxFlex = 0x00080000, /* Use "Flexible mode" for CmdTx command. */ }; -/* Clear CmdSuspend (1<<30) avoiding interference with the card access to the - status bits. Previous driver versions used separate 16 bit fields for - commands and statuses. --SAW - */ -#if defined(__LITTLE_ENDIAN) -#define clear_suspend(cmd) ((__u16 *)&(cmd)->cmd_status)[1] &= ~0x4000 -#elif defined(__BIG_ENDIAN) -#define clear_suspend(cmd) ((__u16 *)&(cmd)->cmd_status)[1] &= ~0x0040 +/* Do atomically if possible. */ +#if defined(__i386__) +#define clear_suspend(cmd) ((char *)(&(cmd)->cmd_status))[3] &= ~0x40 +#elif defined(__alpha__) || defined(__x86_64) || defined(__ia64) +#define clear_suspend(cmd) clear_bit(30, &(cmd)->cmd_status) +#elif defined(__powerpc__) || defined(__sparc__) || (__BIG_ENDIAN) +#define clear_suspend(cmd) clear_bit(6, &(cmd)->cmd_status) #else -#error Unsupported byteorder +#warning Undefined architecture. +#define clear_suspend(cmd) (cmd)->cmd_status &= cpu_to_le32(~CmdSuspend) #endif enum SCBCmdBits { - SCBMaskCmdDone=0x8000, SCBMaskRxDone=0x4000, SCBMaskCmdIdle=0x2000, - SCBMaskRxSuspend=0x1000, SCBMaskEarlyRx=0x0800, SCBMaskFlowCtl=0x0400, - SCBTriggerIntr=0x0200, SCBMaskAll=0x0100, - /* The rest are Rx and Tx commands. */ - CUStart=0x0010, CUResume=0x0020, CUStatsAddr=0x0040, CUShowStats=0x0050, - CUCmdBase=0x0060, /* CU Base address (set to zero) . */ - CUDumpStats=0x0070, /* Dump then reset stats counters. */ - RxStart=0x0001, RxResume=0x0002, RxAbort=0x0004, RxAddrLoad=0x0006, - RxResumeNoResources=0x0007, + SCBMaskCmdDone=0x8000, SCBMaskRxDone=0x4000, SCBMaskCmdIdle=0x2000, + SCBMaskRxSuspend=0x1000, SCBMaskEarlyRx=0x0800, SCBMaskFlowCtl=0x0400, + SCBTriggerIntr=0x0200, SCBMaskAll=0x0100, + /* The rest are Rx and Tx commands. */ + CUStart=0x0010, CUResume=0x0020, CUHiPriStart=0x0030, CUStatsAddr=0x0040, + CUShowStats=0x0050, + CUCmdBase=0x0060, /* CU Base address (set to zero) . */ + CUDumpStats=0x0070, /* Dump then reset stats counters. */ + CUHiPriResume=0x00b0, /* Resume for the high priority Tx queue. */ + RxStart=0x0001, RxResume=0x0002, RxAbort=0x0004, RxAddrLoad=0x0006, + RxResumeNoResources=0x0007, +}; + +enum intr_status_bits { + IntrCmdDone=0x8000, IntrRxDone=0x4000, IntrCmdIdle=0x2000, + IntrRxSuspend=0x1000, IntrMIIDone=0x0800, IntrDrvrIntr=0x0400, + IntrAllNormal=0xfc00, }; enum SCBPort_cmds { @@ -437,9 +454,9 @@ enum SCBPort_cmds { }; /* The Speedo3 Rx and Tx frame/buffer descriptors. */ -struct descriptor { /* A generic descriptor. */ - s32 cmd_status; /* All command and status fields. */ - u32 link; /* struct descriptor * */ +struct descriptor { /* A generic descriptor. */ + s32 cmd_status; /* All command and status fields. */ + u32 link; /* struct descriptor * */ unsigned char params[0]; }; @@ -464,18 +481,11 @@ struct TxFD { /* Transmit frame descriptor set. */ u32 link; /* void * */ u32 tx_desc_addr; /* Always points to the tx_buf_addr element. */ s32 count; /* # of TBD (=1), Tx start thresh., etc. */ - /* This constitutes two "TBD" entries -- we only use one. */ + /* This constitutes two "TBD" entries. Non-zero-copy uses only one. */ u32 tx_buf_addr0; /* void *, frame to be transmitted. */ s32 tx_buf_size0; /* Length of Tx frame. */ - u32 tx_buf_addr1; /* void *, frame to be transmitted. */ - s32 tx_buf_size1; /* Length of Tx frame. */ -}; - -/* Multicast filter setting block. --SAW */ -struct speedo_mc_block { - struct speedo_mc_block *next; - unsigned int tx; - struct descriptor frame __attribute__ ((__aligned__(16))); + u32 tx_buf_addr1; /* Used only for zero-copy data section. */ + s32 tx_buf_size1; /* Length of second data buffer (0). */ }; /* Elements of the dump_statistics block. This block must be lword aligned. */ @@ -499,48 +509,70 @@ struct speedo_stats { u32 done_marker; }; -enum Rx_ring_state_bits { - RrNoMem=1, RrPostponed=2, RrNoResources=4, RrOOMReported=8, -}; - /* Do not change the position (alignment) of the first few elements! The later elements are grouped for cache locality. */ struct speedo_private { struct TxFD tx_ring[TX_RING_SIZE]; /* Commands (usually CmdTxPacket). */ struct RxFD *rx_ringp[RX_RING_SIZE]; /* Rx descriptor, used as ring. */ + struct speedo_stats lstats; /* Statistics and self-test region */ + /* The addresses of a Tx/Rx-in-place packets/buffers. */ struct sk_buff* tx_skbuff[TX_RING_SIZE]; struct sk_buff* rx_skbuff[RX_RING_SIZE]; + + /* Transmit and other commands control. */ struct descriptor *last_cmd; /* Last command sent. */ unsigned int cur_tx, dirty_tx; /* The ring entries to be free()ed. */ spinlock_t lock; /* Group with Tx control cache line. */ u32 tx_threshold; /* The value for txdesc.count. */ - struct RxFD *last_rxf; /* Last command sent. */ + unsigned long last_cmd_time; + + /* Rx control, one cache line. */ + struct RxFD *last_rxf; /* Most recent Rx frame. */ unsigned int cur_rx, dirty_rx; /* The next free ring entry */ + unsigned int rx_buf_sz; /* Based on MTU+slack. */ long last_rx_time; /* Last Rx, in jiffies, to handle Rx hang. */ - const char *product_name; + int rx_copybreak; + + int msg_level; + int max_interrupt_work; struct net_device *next_module; void *priv_addr; /* Unaligned address for kfree */ - struct enet_statistics stats; - struct speedo_stats lstats; - int chip_id; - unsigned char pci_bus, pci_devfn, acpi_pwr; + struct net_device_stats stats; + int alloc_failures; + int chip_id, drv_flags; + struct pci_dev *pci_dev; + unsigned char acpi_pwr; struct timer_list timer; /* Media selection timer. */ - struct speedo_mc_block *mc_setup_head;/* Multicast setup frame list head. */ - struct speedo_mc_block *mc_setup_tail;/* Multicast setup frame list tail. */ + /* Multicast filter command. */ + int mc_setup_frm_len; /* The length of an allocated.. */ + struct descriptor *mc_setup_frm; /* ..multicast setup frame. */ + int mc_setup_busy; /* Avoid double-use of setup frame. */ + int multicast_filter_limit; + int in_interrupt; /* Word-aligned dev->interrupt */ - char rx_mode; /* Current PROMISC/ALLMULTI setting. */ + int rx_mode; /* Current PROMISC/ALLMULTI setting. */ unsigned int tx_full:1; /* The Tx queue is full. */ unsigned int full_duplex:1; /* Full-duplex operation requested. */ unsigned int flow_ctrl:1; /* Use 802.3x flow control. */ unsigned int rx_bug:1; /* Work around receiver hang errata. */ unsigned int rx_bug10:1; /* Receiver might hang at 10mbps. */ unsigned int rx_bug100:1; /* Receiver might hang at 100mbps. */ - unsigned char default_port:8; /* Last dev->if_port value. */ - unsigned char rx_ring_state; /* RX ring status flags. */ + unsigned int polling:1; /* Hardware blocked interrupt line. */ + unsigned int medialock:1; /* The media speed/duplex is fixed. */ + unsigned char default_port; /* Last dev->if_port value. */ unsigned short phy[2]; /* PHY media interfaces available. */ unsigned short advertising; /* Current PHY advertised caps. */ unsigned short partner; /* Link partner caps. */ + long last_reset; +}; + +/* Our internal RxMode state, not tied to the hardware bits. */ +enum rx_mode_bits { + AcceptAllMulticast=0x01, AcceptAllPhys=0x02, + AcceptErr=0x80, AcceptRunt=0x10, + AcceptBroadcast=0x08, AcceptMulticast=0x04, + AcceptMyPhys=0x01, RxInvalidMode=0x7f }; /* The parameters for a CmdConfigure operation. @@ -554,10 +586,10 @@ const char i82557_config_cmd[22] = { const char i82558_config_cmd[22] = { 22, 0x08, 0, 1, 0, 0, 0x22, 0x03, 1, /* 1=Use MII 0=Use AUI */ 0, 0x2E, 0, 0x60, 0x08, 0x88, - 0x68, 0, 0x40, 0xf2, 0x84, /* Disable FC */ + 0x68, 0, 0x40, 0xf2, 0xBD, /* 0xBD->0xFD=Force full-duplex */ 0x31, 0x05, }; -/* PHY media interface chips. */ +/* PHY media interface chips, defined by the databook. */ static const char *phys[] = { "None", "i82553-A/B", "i82553-C", "i82503", "DP83840", "80c240", "80c24", "i82555", @@ -566,10 +598,12 @@ static const char *phys[] = { enum phy_chips { NonSuchPhy=0, I82553AB, I82553C, I82503, DP83840, S80C240, S80C24, I82555, DP83840A=10, }; static const char is_mii[] = { 0, 1, 1, 0, 1, 1, 0, 1 }; + +/* Standard serial configuration EEPROM commands. */ #define EE_READ_CMD (6) static int do_eeprom_cmd(long ioaddr, int cmd, int cmd_len); -static int mdio_read(long ioaddr, int phy_id, int location); +static int mdio_read(struct net_device *dev, int phy_id, int location); static int mdio_write(long ioaddr, int phy_id, int location, int value); static int speedo_open(struct net_device *dev); static void speedo_resume(struct net_device *dev); @@ -577,15 +611,12 @@ static void speedo_timer(unsigned long data); static void speedo_init_rx_ring(struct net_device *dev); static void speedo_tx_timeout(struct net_device *dev); static int speedo_start_xmit(struct sk_buff *skb, struct net_device *dev); -static void speedo_refill_rx_buffers(struct net_device *dev, int force); static int speedo_rx(struct net_device *dev); -static void speedo_tx_buffer_gc(struct net_device *dev); static void speedo_interrupt(int irq, void *dev_instance, struct pt_regs *regs); static int speedo_close(struct net_device *dev); -static struct enet_statistics *speedo_get_stats(struct net_device *dev); +static struct net_device_stats *speedo_get_stats(struct net_device *dev); static int speedo_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); static void set_rx_mode(struct net_device *dev); -static void speedo_show_state(struct net_device *dev); @@ -599,112 +630,28 @@ static int mii_ctrl[8] = { 0x3300, 0x3100, 0x0000, 0x0100, /* A list of all installed Speedo devices, for removing the driver module. */ static struct net_device *root_speedo_dev = NULL; -int eepro100_init(void) -{ - int cards_found = 0; - int chip_idx; - struct pci_dev *pdev; - - if (! pcibios_present()) - return cards_found; - - for (chip_idx = 0; pci_tbl[chip_idx].name; chip_idx++) { - for (; pci_tbl[chip_idx].pci_index < 8; pci_tbl[chip_idx].pci_index++) { - unsigned char pci_bus, pci_device_fn, pci_latency; - unsigned long pciaddr; - long ioaddr; - int irq; - - u16 pci_command, new_command; - - if (pcibios_find_device(pci_tbl[chip_idx].vendor_id, - pci_tbl[chip_idx].device_id, - pci_tbl[chip_idx].pci_index, &pci_bus, - &pci_device_fn)) - break; - { - pdev = pci_find_slot(pci_bus, pci_device_fn); -#ifdef USE_IO - pciaddr = pci_base_address(pdev, 1); /* Use [0] to mem-map */ -#else - pciaddr = pci_base_address(pdev, 0); -#endif - irq = pdev->irq; - } - /* Remove I/O space marker in bit 0. */ - if (pciaddr & 1) { - ioaddr = pciaddr & ~3UL; - if (check_region(ioaddr, 32)) - continue; - } else { -#ifdef __sparc__ - /* ioremap is hosed in 2.2.x on Sparc. */ - ioaddr = pciaddr & ~0xfUL; -#else - if ((ioaddr = (long)ioremap(pciaddr & ~0xfUL, 0x1000)) == 0) { - printk(KERN_INFO "Failed to map PCI address %#lx.\n", - pciaddr); - continue; - } -#endif - } - if (speedo_debug > 2) - printk("Found Intel i82557 PCI Speedo at I/O %#lx, IRQ %d.\n", - ioaddr, irq); - - /* Get and check the bus-master and latency values. */ - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, &pci_command); - new_command = pci_command | PCI_COMMAND_MASTER|PCI_COMMAND_IO; - if (pci_command != new_command) { - printk(KERN_INFO " The PCI BIOS has not enabled this" - " device! Updating PCI command %4.4x->%4.4x.\n", - pci_command, new_command); - pcibios_write_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, new_command); - } - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, &pci_latency); - if (pci_latency < 32) { - printk(" PCI latency timer (CFLT) is unreasonably low at %d." - " Setting to 32 clocks.\n", pci_latency); - pcibios_write_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, 32); - } else if (speedo_debug > 1) - printk(" PCI latency timer (CFLT) is %#x.\n", pci_latency); - - if (speedo_found1(pdev, pci_bus, pci_device_fn, ioaddr, chip_idx, cards_found)) - cards_found++; - } - } - - return cards_found; -} - -static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, - int pci_devfn, long ioaddr, - int chip_idx, int card_idx) +static void *speedo_found1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int card_idx) { struct net_device *dev; struct speedo_private *sp; - const char *product; + void *priv_mem; int i, option; u16 eeprom[0x100]; int acpi_idle_state = 0; -#ifndef MODULE - static int did_version = 0; /* Already printed version info. */ - if (speedo_debug > 0 && did_version++ == 0) - printk(version); -#endif - dev = init_etherdev(NULL, sizeof(struct speedo_private)); + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; if (dev->mem_start > 0) option = dev->mem_start; else if (card_idx >= 0 && options[card_idx] >= 0) option = options[card_idx]; else - option = 0; + option = -1; + + acpi_idle_state = acpi_set_pwr_state(pdev, ACPI_D0); /* Read the station address EEPROM before doing the reset. Nominally his should even be done before accepting the device, but @@ -712,15 +659,11 @@ static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, The size test is for 6 bit vs. 8 bit address serial EEPROMs. */ { - unsigned long iobase; - int read_cmd, ee_size; - u16 sum; + u16 sum = 0; int j; + int read_cmd, ee_size; - /* Use IO only to avoid postponed writes and satisfy EEPROM timing - requirements. */ - iobase = pci_base_address(pdev, 1) & ~3UL; - if ((do_eeprom_cmd(iobase, EE_READ_CMD << 24, 27) & 0xffe0000) + if ((do_eeprom_cmd(ioaddr, EE_READ_CMD << 24, 27) & 0xffe0000) == 0xffe0000) { ee_size = 0x100; read_cmd = EE_READ_CMD << 24; @@ -729,8 +672,8 @@ static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, read_cmd = EE_READ_CMD << 22; } - for (j = 0, i = 0, sum = 0; i < ee_size; i++) { - u16 value = do_eeprom_cmd(iobase, read_cmd | (i << 16), 27); + for (j = 0, i = 0; i < ee_size; i++) { + u16 value = do_eeprom_cmd(ioaddr, read_cmd | (i << 16), 27); eeprom[i] = value; sum += value; if (i < 3) { @@ -743,45 +686,41 @@ static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, "check settings before activating this device!\n", dev->name, sum); /* Don't unregister_netdev(dev); as the EEPro may actually be - usable, especially if the MAC address is set later. - On the other hand, it may be unusable if MDI data is corrupted. */ + usable, especially if the MAC address is set later. */ } /* Reset the chip: stop Tx and Rx processes and clear counters. This takes less than 10usec and will easily finish before the next action. */ outl(PortReset, ioaddr + SCBPort); - inl(ioaddr + SCBPort); - /* Honor PortReset timing. */ - udelay(10); - - if (eeprom[3] & 0x0100) - product = "OEM i82557/i82558 10/100 Ethernet"; - else - product = pci_tbl[chip_idx].name; - printk(KERN_INFO "%s: %s, ", dev->name, product); + printk(KERN_INFO "%s: %s%s at %#3lx, ", dev->name, + eeprom[3] & 0x0100 ? "OEM " : "", pci_id_tbl[chip_idx].name, + ioaddr); for (i = 0; i < 5; i++) printk("%2.2X:", dev->dev_addr[i]); - printk("%2.2X, ", dev->dev_addr[i]); -#ifdef USE_IO - printk("I/O at %#3lx, ", ioaddr); -#endif - printk("IRQ %d.\n", pdev->irq); + printk("%2.2X, IRQ %d.\n", dev->dev_addr[i], irq); + + /* We have decided to accept this device. */ + /* Allocate cached private storage. + The PCI coherent descriptor rings are allocated at each open. */ + sp = priv_mem = kmalloc(sizeof(*sp), GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; + dev->base_addr = ioaddr; + dev->irq = irq; -#if 1 || defined(kernel_bloat) +#ifndef kernel_bloat /* OK, this is pure kernel bloat. I don't like it when other drivers waste non-pageable kernel space to emit similar messages, but I need them for bug reports. */ { const char *connectors[] = {" RJ45", " BNC", " AUI", " MII"}; /* The self-test results must be paragraph aligned. */ - s32 str[6], *volatile self_test_results; + s32 *volatile self_test_results; int boguscnt = 16000; /* Timeout for set-test. */ - if ((eeprom[3] & 0x03) != 0x03) - printk(KERN_INFO " Receiver lock-up bug exists -- enabling" - " work-around.\n"); printk(KERN_INFO " Board assembly %4.4x%2.2x-%3.3d, Physical" " connectors present:", eeprom[8], eeprom[9]>>8, eeprom[9] & 0xff); @@ -795,24 +734,42 @@ static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, phys[(eeprom[7]>>8)&7]); if (((eeprom[6]>>8) & 0x3f) == DP83840 || ((eeprom[6]>>8) & 0x3f) == DP83840A) { - int mdi_reg23 = mdio_read(ioaddr, eeprom[6] & 0x1f, 23) | 0x0422; + int mdi_reg23 = mdio_read(dev, eeprom[6] & 0x1f, 23) | 0x0422; if (congenb) mdi_reg23 |= 0x0100; printk(KERN_INFO" DP83840 specific setup, setting register 23 to %4.4x.\n", mdi_reg23); mdio_write(ioaddr, eeprom[6] & 0x1f, 23, mdi_reg23); } - if ((option >= 0) && (option & 0x70)) { + if ((option >= 0) && (option & 0x330)) { printk(KERN_INFO " Forcing %dMbs %s-duplex operation.\n", - (option & 0x20 ? 100 : 10), - (option & 0x10 ? "full" : "half")); + (option & 0x300 ? 100 : 10), + (option & 0x220 ? "full" : "half")); mdio_write(ioaddr, eeprom[6] & 0x1f, 0, - ((option & 0x20) ? 0x2000 : 0) | /* 100mbps? */ - ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */ + ((option & 0x300) ? 0x2000 : 0) | /* 100mbps? */ + ((option & 0x220) ? 0x0100 : 0)); /* Full duplex? */ + } else { + int mii_bmcrctrl = mdio_read(dev, eeprom[6] & 0x1f, 0); + /* Reset out of a transceiver left in 10baseT-fixed mode. */ + if ((mii_bmcrctrl & 0x3100) == 0) + mdio_write(ioaddr, eeprom[6] & 0x1f, 0, 0x8000); } + if (eeprom[10] & 0x0002) + printk(KERN_INFO "\n" KERN_INFO " ** The configuration " + "EEPROM enables Sleep Mode.\n" KERN_INFO "\n" + " ** This will cause PCI bus errors!\n" + KERN_INFO " ** Update the configuration EEPROM " + "with the eepro100-diag program.\n" ); + if (eeprom[6] == 0) + printk(KERN_INFO " ** The configuration EEPROM does not have a " + "transceiver type set.\n" KERN_INFO "\n" + " ** This will cause configuration problems and prevent " + "monitoring the link!\n" + KERN_INFO " ** Update the configuration EEPROM " + "with the eepro100-diag program.\n" ); /* Perform a system self-test. */ - self_test_results = (s32*) ((((long) str) + 15) & ~0xf); + self_test_results = (s32*)(&sp->lstats); self_test_results[0] = 0; self_test_results[1] = -1; outl(virt_to_bus(self_test_results) | PortSelfTest, ioaddr + SCBPort); @@ -840,37 +797,36 @@ static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, #endif /* kernel_bloat */ outl(PortReset, ioaddr + SCBPort); - inl(ioaddr + SCBPort); - /* Honor PortReset timing. */ - udelay(10); - /* We do a request_region() only to register /proc/ioports info. */ - request_region(ioaddr, SPEEDO3_TOTAL_SIZE, "Intel Speedo3 Ethernet"); + /* Return the chip to its original power state. */ + acpi_set_pwr_state(pdev, acpi_idle_state); - dev->base_addr = ioaddr; - dev->irq = pdev->irq; + /* We do a request_region() only to register /proc/ioports info. */ + request_region(ioaddr, pci_id_tbl[chip_idx].io_size, dev->name); - sp = dev->priv; - if (dev->priv == NULL) { - void *mem = kmalloc(sizeof(*sp), GFP_KERNEL); - dev->priv = sp = mem; /* Cache align here if kmalloc does not. */ - sp->priv_addr = mem; - } + dev->priv = sp; /* Allocated above. */ memset(sp, 0, sizeof(*sp)); sp->next_module = root_speedo_dev; root_speedo_dev = dev; - sp->pci_bus = pci_bus; - sp->pci_devfn = pci_devfn; + sp->priv_addr = priv_mem; + sp->pci_dev = pdev; sp->chip_id = chip_idx; + sp->drv_flags = pci_id_tbl[chip_idx].drv_flags; sp->acpi_pwr = acpi_idle_state; + sp->msg_level = (1 << debug) - 1; + sp->rx_copybreak = rx_copybreak; + sp->max_interrupt_work = max_interrupt_work; + sp->multicast_filter_limit = multicast_filter_limit; - sp->full_duplex = option >= 0 && (option & 0x10) ? 1 : 0; + sp->full_duplex = option >= 0 && (option & 0x220) ? 1 : 0; if (card_idx >= 0) { if (full_duplex[card_idx] >= 0) sp->full_duplex = full_duplex[card_idx]; } sp->default_port = option >= 0 ? (option & 0x0f) : 0; + if (sp->full_duplex) + sp->medialock = 1; sp->phy[0] = eeprom[6]; sp->phy[1] = eeprom[7]; @@ -882,10 +838,6 @@ static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, /* The Speedo-specific entries in the device structure. */ dev->open = &speedo_open; dev->hard_start_xmit = &speedo_start_xmit; -#if defined(HAS_NETIF_QUEUE) - dev->tx_timeout = &speedo_tx_timeout; - dev->watchdog_timeo = TX_TIMEOUT; -#endif dev->stop = &speedo_close; dev->get_stats = &speedo_get_stats; dev->set_multicast_list = &set_rx_mode; @@ -893,6 +845,50 @@ static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, return dev; } + +/* How to wait for the command unit to accept a command. + Typically this takes 0 ticks. */ + +static inline void wait_for_cmd_done(struct net_device *dev) +{ + long cmd_ioaddr = dev->base_addr + SCBCmd; + int wait = 0; + int delayed_cmd; + do + if (inb(cmd_ioaddr) == 0) return; + while(++wait <= 100); + delayed_cmd = inb(cmd_ioaddr); + do + if (inb(cmd_ioaddr) == 0) break; + while(++wait <= 10000); + printk(KERN_ERR "%s: Command %2.2x was not immediately accepted, " + "%d ticks!\n", + dev->name, delayed_cmd, wait); +} + +/* Perform a SCB command known to be slow. + This function checks the status both before and after command execution. */ +static void do_slow_command(struct net_device *dev, int cmd) +{ + long cmd_ioaddr = dev->base_addr + SCBCmd; + int wait = 0; + do + if (inb(cmd_ioaddr) == 0) break; + while(++wait <= 200); + if (wait > 100) + printk(KERN_ERR "%s: Command %4.4x was never accepted (%d polls)!\n", + dev->name, inb(cmd_ioaddr), wait); + outb(cmd, cmd_ioaddr); + for (wait = 0; wait <= 100; wait++) + if (inb(cmd_ioaddr) == 0) return; + for (; wait <= 20000; wait++) + if (inb(cmd_ioaddr) == 0) return; + else udelay(1); + printk(KERN_ERR "%s: Command %4.4x was not accepted after %d polls!" + " Current status %8.8x.\n", + dev->name, cmd, wait, (int)inl(dev->base_addr + SCBStatus)); +} + /* Serial EEPROM section. A "bit" grungy, but we work our way through bit-by-bit :->. */ @@ -906,43 +902,48 @@ static struct net_device *speedo_found1(struct pci_dev *pdev, int pci_bus, #define EE_WRITE_1 0x4806 #define EE_OFFSET SCBeeprom -/* The fixes for the code were kindly provided by Dragan Stancevic - <visitor@valinux.com> to strictly follow Intel specifications of EEPROM - access timing. - The publicly available sheet 64486302 (sec. 3.1) specifies 1us access - interval for serial EEPROM. However, it looks like that there is an - additional requirement dictating larger udelay's in the code below. - 2000/05/24 SAW */ +/* Delay between EEPROM clock transitions. + The code works with no delay on 33Mhz PCI. */ +#ifndef USE_IO_OPS +#define eeprom_delay(ee_addr) writew(readw(ee_addr), ee_addr) +#else +#define eeprom_delay(ee_addr) inw(ee_addr) +#endif + static int do_eeprom_cmd(long ioaddr, int cmd, int cmd_len) { unsigned retval = 0; long ee_addr = ioaddr + SCBeeprom; - io_outw(EE_ENB, ee_addr); udelay(2); - io_outw(EE_ENB | EE_SHIFT_CLK, ee_addr); udelay(2); + outw(EE_ENB | EE_SHIFT_CLK, ee_addr); /* Shift the command bits out. */ do { short dataval = (cmd & (1 << cmd_len)) ? EE_WRITE_1 : EE_WRITE_0; - io_outw(dataval, ee_addr); udelay(2); - io_outw(dataval | EE_SHIFT_CLK, ee_addr); udelay(2); - retval = (retval << 1) | ((io_inw(ee_addr) & EE_DATA_READ) ? 1 : 0); + outw(dataval, ee_addr); + eeprom_delay(ee_addr); + outw(dataval | EE_SHIFT_CLK, ee_addr); + eeprom_delay(ee_addr); + retval = (retval << 1) | ((inw(ee_addr) & EE_DATA_READ) ? 1 : 0); } while (--cmd_len >= 0); - io_outw(EE_ENB, ee_addr); udelay(2); + outw(EE_ENB, ee_addr); /* Terminate the EEPROM access. */ - io_outw(EE_ENB & ~EE_CS, ee_addr); + outw(EE_ENB & ~EE_CS, ee_addr); return retval; } -static int mdio_read(long ioaddr, int phy_id, int location) +static int mdio_read(struct net_device *dev, int phy_id, int location) { + long ioaddr = dev->base_addr; int val, boguscnt = 64*10; /* <64 usec. to complete, typ 27 ticks */ + outl(0x08000000 | (location<<16) | (phy_id<<21), ioaddr + SCBCtrlMDI); do { val = inl(ioaddr + SCBCtrlMDI); if (--boguscnt < 0) { - printk(KERN_ERR " mdio_read() timed out with val = %8.8x.\n", val); + printk(KERN_ERR "%s: mdio_read() timed out with val = %8.8x.\n", + dev->name, val); break; } } while (! (val & 0x10000000)); @@ -971,10 +972,11 @@ speedo_open(struct net_device *dev) struct speedo_private *sp = (struct speedo_private *)dev->priv; long ioaddr = dev->base_addr; - if (speedo_debug > 1) - printk(KERN_DEBUG "%s: speedo_open() irq %d.\n", dev->name, dev->irq); - MOD_INC_USE_COUNT; + acpi_set_pwr_state(sp->pci_dev, ACPI_D0); + + if (sp->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: speedo_open() irq %d.\n", dev->name, dev->irq); /* Set up the Tx queue early.. */ sp->cur_tx = 0; @@ -982,19 +984,16 @@ speedo_open(struct net_device *dev) sp->last_cmd = 0; sp->tx_full = 0; sp->lock = (spinlock_t) SPIN_LOCK_UNLOCKED; - sp->in_interrupt = 0; - - /* .. we can safely take handler calls during init. */ - if (request_irq(dev->irq, &speedo_interrupt, SA_SHIRQ, dev->name, dev)) { - MOD_DEC_USE_COUNT; - return -EAGAIN; - } + sp->polling = sp->in_interrupt = 0; dev->if_port = sp->default_port; -#ifdef oh_no_you_dont_unless_you_honour_the_options_passed_in_to_us - /* Retrigger negotiation to reset previous errors. */ - if ((sp->phy[0] & 0x8000) == 0) { + if ((sp->phy[0] & 0x8000) == 0) + sp->advertising = mdio_read(dev, sp->phy[0] & 0x1f, 4); + /* With some transceivers we must retrigger negotiation to reset + power-up errors. */ + if ((sp->drv_flags & ResetMII) && + (sp->phy[0] & 0x8000) == 0) { int phy_addr = sp->phy[0] & 0x1f ; /* Use 0x3300 for restarting NWay, other values to force xcvr: 0x0000 10-HD @@ -1008,31 +1007,31 @@ speedo_open(struct net_device *dev) mdio_write(ioaddr, phy_addr, 0, 0x3300); #endif } -#endif + + /* We can safely take handler calls during init. + Doing this after speedo_init_rx_ring() results in a memory leak. */ + if (request_irq(dev->irq, &speedo_interrupt, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; + return -EAGAIN; + } speedo_init_rx_ring(dev); /* Fire up the hardware. */ - outw(SCBMaskAll, ioaddr + SCBCmd); speedo_resume(dev); - - dev->interrupt = 0; - dev->start = 1; - netif_start_queue(dev); + netif_start_tx_queue(dev); /* Setup the chip and configure the multicast list. */ - sp->mc_setup_head = NULL; - sp->mc_setup_tail = NULL; + sp->mc_setup_frm = NULL; + sp->mc_setup_frm_len = 0; + sp->mc_setup_busy = 0; + sp->rx_mode = RxInvalidMode; /* Invalid -> always reset the mode. */ sp->flow_ctrl = sp->partner = 0; - sp->rx_mode = -1; /* Invalid -> always reset the mode. */ set_rx_mode(dev); - if ((sp->phy[0] & 0x8000) == 0) - sp->advertising = mdio_read(ioaddr, sp->phy[0] & 0x1f, 4); - if (speedo_debug > 2) { + if (sp->msg_level & NETIF_MSG_IFUP) printk(KERN_DEBUG "%s: Done speedo_open(), status %8.8x.\n", - dev->name, inw(ioaddr + SCBStatus)); - } + dev->name, (int)inw(ioaddr + SCBStatus)); /* Set the timer. The timer serves a dual purpose: 1) to monitor the media interface (e.g. link beat) and perhaps switch @@ -1040,15 +1039,14 @@ speedo_open(struct net_device *dev) 2) to monitor Rx activity, and restart the Rx process if the receiver hangs. */ init_timer(&sp->timer); - sp->timer.expires = RUN_AT((24*HZ)/10); /* 2.4 sec. */ + sp->timer.expires = jiffies + 3*HZ; sp->timer.data = (unsigned long)dev; sp->timer.function = &speedo_timer; /* timer handler */ add_timer(&sp->timer); /* No need to wait for the command unit to accept here. */ if ((sp->phy[0] & 0x8000) == 0) - mdio_read(ioaddr, sp->phy[0] & 0x1f, 0); - + mdio_read(dev, sp->phy[0] & 0x1f, 0); return 0; } @@ -1058,60 +1056,57 @@ static void speedo_resume(struct net_device *dev) struct speedo_private *sp = (struct speedo_private *)dev->priv; long ioaddr = dev->base_addr; + outw(SCBMaskAll, ioaddr + SCBCmd); + /* Start with a Tx threshold of 256 (0x..20.... 8 byte units). */ sp->tx_threshold = 0x01208000; /* Set the segment registers to '0'. */ - wait_for_cmd_done(ioaddr + SCBCmd); + wait_for_cmd_done(dev); + if (inb(ioaddr + SCBCmd)) { + outl(PortPartialReset, ioaddr + SCBPort); + udelay(10); + } outl(0, ioaddr + SCBPointer); - /* impose a delay to avoid a bug */ - inl(ioaddr + SCBPointer); - udelay(10); - outb(RxAddrLoad, ioaddr + SCBCmd); - wait_for_cmd_done(ioaddr + SCBCmd); - outb(CUCmdBase, ioaddr + SCBCmd); - wait_for_cmd_done(ioaddr + SCBCmd); + inl(ioaddr + SCBPointer); /* Flush to PCI. */ + udelay(10); /* Bogus, but it avoids the bug. */ + /* Note: these next two operations can take a while. */ + do_slow_command(dev, RxAddrLoad); + do_slow_command(dev, CUCmdBase); /* Load the statistics block and rx ring addresses. */ outl(virt_to_bus(&sp->lstats), ioaddr + SCBPointer); + inl(ioaddr + SCBPointer); /* Flush to PCI. */ outb(CUStatsAddr, ioaddr + SCBCmd); sp->lstats.done_marker = 0; - wait_for_cmd_done(ioaddr + SCBCmd); + wait_for_cmd_done(dev); - if (sp->rx_ringp[sp->cur_rx % RX_RING_SIZE] == NULL) { - if (speedo_debug > 2) - printk(KERN_DEBUG "%s: NULL cur_rx in speedo_resume().\n", - dev->name); - } else { - outl(virt_to_bus(sp->rx_ringp[sp->cur_rx % RX_RING_SIZE]), - ioaddr + SCBPointer); - outb(RxStart, ioaddr + SCBCmd); - wait_for_cmd_done(ioaddr + SCBCmd); - } - - outb(CUDumpStats, ioaddr + SCBCmd); + outl(virt_to_bus(sp->rx_ringp[sp->cur_rx % RX_RING_SIZE]), + ioaddr + SCBPointer); + inl(ioaddr + SCBPointer); /* Flush to PCI. */ + /* Note: RxStart should complete instantly. */ + do_slow_command(dev, RxStart); + do_slow_command(dev, CUDumpStats); /* Fill the first command with our physical address. */ { - struct descriptor *ias_cmd; + int entry = sp->cur_tx++ % TX_RING_SIZE; + struct descriptor *cur_cmd = (struct descriptor *)&sp->tx_ring[entry]; - ias_cmd = - (struct descriptor *)&sp->tx_ring[sp->cur_tx++ % TX_RING_SIZE]; /* Avoid a bug(?!) here by marking the command already completed. */ - ias_cmd->cmd_status = cpu_to_le32((CmdSuspend | CmdIASetup) | 0xa000); - ias_cmd->link = + cur_cmd->cmd_status = cpu_to_le32((CmdSuspend | CmdIASetup) | 0xa000); + cur_cmd->link = virt_to_le32desc(&sp->tx_ring[sp->cur_tx % TX_RING_SIZE]); - memcpy(ias_cmd->params, dev->dev_addr, 6); - sp->last_cmd = ias_cmd; + memcpy(cur_cmd->params, dev->dev_addr, 6); + if (sp->last_cmd) + clear_suspend(sp->last_cmd); + sp->last_cmd = cur_cmd; } /* Start the chip's Tx process and unmask interrupts. */ - wait_for_cmd_done(ioaddr + SCBCmd); outl(virt_to_bus(&sp->tx_ring[sp->dirty_tx % TX_RING_SIZE]), ioaddr + SCBPointer); - /* We are not ACK-ing FCP and ER in the interrupt handler yet so they should - remain masked --Dragan */ - outw(CUStart | SCBMaskEarlyRx | SCBMaskFlowCtl, ioaddr + SCBCmd); + outw(CUStart, ioaddr + SCBCmd); } /* Media monitoring and control. */ @@ -1121,90 +1116,116 @@ static void speedo_timer(unsigned long data) struct speedo_private *sp = (struct speedo_private *)dev->priv; long ioaddr = dev->base_addr; int phy_num = sp->phy[0] & 0x1f; + int status = inw(ioaddr + SCBStatus); + if (sp->msg_level & NETIF_MSG_TIMER) + printk(KERN_DEBUG "%s: Interface monitor tick, chip status %4.4x.\n", + dev->name, status); + + /* Normally we check every two seconds. */ + sp->timer.expires = jiffies + 2*HZ; + + if (sp->polling) { + /* Continue to be annoying. */ + if (status & 0xfc00) { + speedo_interrupt(dev->irq, dev, 0); + if (jiffies - sp->last_reset > 10*HZ) { + printk(KERN_ERR "%s: IRQ %d is still blocked!\n", + dev->name, dev->irq); + sp->last_reset = jiffies; + } + } else if (jiffies - sp->last_reset > 10*HZ) + sp->polling = 0; + sp->timer.expires = jiffies + 2; + } /* We have MII and lost link beat. */ if ((sp->phy[0] & 0x8000) == 0) { - int partner = mdio_read(ioaddr, phy_num, 5); + int partner = mdio_read(dev, phy_num, 5); if (partner != sp->partner) { int flow_ctrl = sp->advertising & partner & 0x0400 ? 1 : 0; - if (speedo_debug > 2) { - printk(KERN_DEBUG "%s: Link status change.\n", dev->name); - printk(KERN_DEBUG "%s: Old partner %x, new %x, adv %x.\n", - dev->name, sp->partner, partner, sp->advertising); - } sp->partner = partner; if (flow_ctrl != sp->flow_ctrl) { sp->flow_ctrl = flow_ctrl; - sp->rx_mode = -1; /* Trigger a reload. */ + sp->rx_mode = RxInvalidMode; /* Trigger a reload. */ } /* Clear sticky bit. */ - mdio_read(ioaddr, phy_num, 1); + mdio_read(dev, phy_num, 1); /* If link beat has returned... */ - if (mdio_read(ioaddr, phy_num, 1) & 0x0004) - dev->flags |= IFF_RUNNING; + if (mdio_read(dev, phy_num, 1) & 0x0004) + netif_link_up(dev); else - dev->flags &= ~IFF_RUNNING; + netif_link_down(dev); } } - if (speedo_debug > 3) { - printk(KERN_DEBUG "%s: Media control tick, status %4.4x.\n", - dev->name, inw(ioaddr + SCBStatus)); + + /* This no longer has a false-trigger window. */ + if (sp->cur_tx - sp->dirty_tx > 1 && + (jiffies - dev->trans_start) > TX_TIMEOUT && + (jiffies - sp->last_cmd_time) > TX_TIMEOUT) { + if (status == 0xffff) { + if (jiffies - sp->last_reset > 10*HZ) { + sp->last_reset = jiffies; + printk(KERN_ERR "%s: The EEPro100 chip is missing!\n", + dev->name); + } + } else if (status & 0xfc00) { + /* We have a blocked IRQ line. This should never happen, but + we recover as best we can.*/ + if ( ! sp->polling) { + if (jiffies - sp->last_reset > 10*HZ) { + printk(KERN_ERR "%s: IRQ %d is physically blocked! (%4.4x)" + "Failing back to low-rate polling.\n", + dev->name, dev->irq, status); + sp->last_reset = jiffies; + } + sp->polling = 1; + } + speedo_interrupt(dev->irq, dev, 0); + sp->timer.expires = jiffies + 2; /* Avoid */ + } else { + speedo_tx_timeout(dev); + sp->last_reset = jiffies; + } } - if (sp->rx_mode < 0 || + if (sp->rx_mode == RxInvalidMode || (sp->rx_bug && jiffies - sp->last_rx_time > 2*HZ)) { /* We haven't received a packet in a Long Time. We might have been bitten by the receiver hang bug. This can be cleared by sending a set multicast list command. */ - if (speedo_debug > 2) - printk(KERN_DEBUG "%s: Sending a multicast list set command" - " from a timer routine.\n", dev->name); set_rx_mode(dev); } - /* We must continue to monitor the media. */ - sp->timer.expires = RUN_AT(2*HZ); /* 2.0 sec. */ add_timer(&sp->timer); } static void speedo_show_state(struct net_device *dev) { struct speedo_private *sp = (struct speedo_private *)dev->priv; -#if 0 - long ioaddr = dev->base_addr; int phy_num = sp->phy[0] & 0x1f; -#endif int i; /* Print a few items for debugging. */ - if (speedo_debug > 0) { + if (sp->msg_level & NETIF_MSG_DRV) { int i; - printk(KERN_DEBUG "%s: Tx ring dump, Tx queue %u / %u:\n", dev->name, + printk(KERN_DEBUG "%s: Tx ring dump, Tx queue %d / %d:\n", dev->name, sp->cur_tx, sp->dirty_tx); for (i = 0; i < TX_RING_SIZE; i++) - printk(KERN_DEBUG "%s: %c%c%2d %8.8x.\n", dev->name, + printk(KERN_DEBUG "%s: %c%c%d %8.8x.\n", dev->name, i == sp->dirty_tx % TX_RING_SIZE ? '*' : ' ', i == sp->cur_tx % TX_RING_SIZE ? '=' : ' ', i, sp->tx_ring[i].status); } - printk(KERN_DEBUG "%s: Printing Rx ring" - " (next to receive into %u, dirty index %u).\n", - dev->name, sp->cur_rx, sp->dirty_rx); + printk(KERN_DEBUG "%s:Printing Rx ring (next to receive into %d).\n", + dev->name, sp->cur_rx); for (i = 0; i < RX_RING_SIZE; i++) - printk(KERN_DEBUG "%s: %c%c%c%2d %8.8x.\n", dev->name, - sp->rx_ringp[i] == sp->last_rxf ? 'l' : ' ', - i == sp->dirty_rx % RX_RING_SIZE ? '*' : ' ', - i == sp->cur_rx % RX_RING_SIZE ? '=' : ' ', - i, (sp->rx_ringp[i] != NULL) ? - (unsigned)sp->rx_ringp[i]->status : 0); + printk(KERN_DEBUG " Rx ring entry %d %8.8x.\n", + i, sp->rx_ringp[i] ? (int)sp->rx_ringp[i]->status : 0); -#if 0 for (i = 0; i < 16; i++) { - /* FIXME: what does it mean? --SAW */ if (i == 6) i = 21; - printk(KERN_DEBUG "%s: PHY index %d register %d is %4.4x.\n", - dev->name, phy_num, i, mdio_read(ioaddr, phy_num, i)); + printk(KERN_DEBUG " PHY index %d register %d is %4.4x.\n", + phy_num, i, mdio_read(dev, phy_num, i)); } -#endif } @@ -1217,10 +1238,18 @@ speedo_init_rx_ring(struct net_device *dev) int i; sp->cur_rx = 0; +#if defined(CONFIG_VLAN) + /* Note that buffer sizing is not a run-time check! */ + sp->rx_buf_sz = dev->mtu + 14 + sizeof(struct RxFD) + 4; +#else + sp->rx_buf_sz = dev->mtu + 14 + sizeof(struct RxFD); +#endif + if (sp->rx_buf_sz < PKT_BUF_SZ) + sp->rx_buf_sz = PKT_BUF_SZ; for (i = 0; i < RX_RING_SIZE; i++) { struct sk_buff *skb; - skb = dev_alloc_skb(PKT_BUF_SZ + sizeof(struct RxFD)); + skb = dev_alloc_skb(sp->rx_buf_sz); sp->rx_skbuff[i] = skb; if (skb == NULL) break; /* OK. Just initially short of Rx bufs. */ @@ -1233,9 +1262,13 @@ speedo_init_rx_ring(struct net_device *dev) last_rxf = rxf; rxf->status = cpu_to_le32(0x00000001); /* '1' is flag value only. */ rxf->link = 0; /* None yet. */ - /* This field unused by i82557. */ + /* This field unused by i82557, we use it as a consistency check. */ +#ifdef final_version rxf->rx_buf_addr = 0xffffffff; - rxf->count = cpu_to_le32(PKT_BUF_SZ << 16); +#else + rxf->rx_buf_addr = virt_to_bus(skb->tail); +#endif + rxf->count = cpu_to_le32((sp->rx_buf_sz - sizeof(struct RxFD)) << 16); } sp->dirty_rx = (unsigned int)(i - RX_RING_SIZE); /* Mark the last entry as end-of-list. */ @@ -1243,121 +1276,86 @@ speedo_init_rx_ring(struct net_device *dev) sp->last_rxf = last_rxf; } -static void speedo_purge_tx(struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - int entry; - - while ((int)(sp->cur_tx - sp->dirty_tx) > 0) { - entry = sp->dirty_tx % TX_RING_SIZE; - if (sp->tx_skbuff[entry]) { - sp->stats.tx_errors++; - dev_free_skb(sp->tx_skbuff[entry]); - sp->tx_skbuff[entry] = 0; - } - sp->dirty_tx++; - } - while (sp->mc_setup_head != NULL) { - struct speedo_mc_block *t; - if (speedo_debug > 1) - printk(KERN_DEBUG "%s: freeing mc frame.\n", dev->name); - t = sp->mc_setup_head->next; - kfree(sp->mc_setup_head); - sp->mc_setup_head = t; - } - sp->mc_setup_tail = NULL; - sp->tx_full = 0; - netif_wake_queue(dev); -} - -static void reset_mii(struct net_device *dev) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - long ioaddr = dev->base_addr; - /* Reset the MII transceiver, suggested by Fred Young @ scalable.com. */ - if ((sp->phy[0] & 0x8000) == 0) { - int phy_addr = sp->phy[0] & 0x1f; - int advertising = mdio_read(ioaddr, phy_addr, 4); - int mii_bmcr = mdio_read(ioaddr, phy_addr, 0); - mdio_write(ioaddr, phy_addr, 0, 0x0400); - mdio_write(ioaddr, phy_addr, 1, 0x0000); - mdio_write(ioaddr, phy_addr, 4, 0x0000); - mdio_write(ioaddr, phy_addr, 0, 0x8000); -#ifdef honor_default_port - mdio_write(ioaddr, phy_addr, 0, mii_ctrl[dev->default_port & 7]); -#else - mdio_read(ioaddr, phy_addr, 0); - mdio_write(ioaddr, phy_addr, 0, mii_bmcr); - mdio_write(ioaddr, phy_addr, 4, advertising); -#endif - } -} - static void speedo_tx_timeout(struct net_device *dev) { struct speedo_private *sp = (struct speedo_private *)dev->priv; long ioaddr = dev->base_addr; int status = inw(ioaddr + SCBStatus); - unsigned long flags; printk(KERN_WARNING "%s: Transmit timed out: status %4.4x " - " %4.4x at %d/%d command %8.8x.\n", - dev->name, status, inw(ioaddr + SCBCmd), + " %4.4x at %d/%d commands %8.8x %8.8x %8.8x.\n", + dev->name, status, (int)inw(ioaddr + SCBCmd), sp->dirty_tx, sp->cur_tx, - sp->tx_ring[sp->dirty_tx % TX_RING_SIZE].status); + sp->tx_ring[(sp->dirty_tx+0) % TX_RING_SIZE].status, + sp->tx_ring[(sp->dirty_tx+1) % TX_RING_SIZE].status, + sp->tx_ring[(sp->dirty_tx+2) % TX_RING_SIZE].status); /* Trigger a stats dump to give time before the reset. */ speedo_get_stats(dev); speedo_show_state(dev); -#if 0 if ((status & 0x00C0) != 0x0080 - && (status & 0x003C) == 0x0010) { + && (status & 0x003C) == 0x0010 && 0) { /* Only the command unit has stopped. */ printk(KERN_WARNING "%s: Trying to restart the transmitter...\n", dev->name); outl(virt_to_bus(&sp->tx_ring[sp->dirty_tx % TX_RING_SIZE]), ioaddr + SCBPointer); outw(CUStart, ioaddr + SCBCmd); - reset_mii(dev); } else { -#else - { -#endif - start_bh_atomic(); - /* Ensure that timer routine doesn't run! */ - del_timer(&sp->timer); - end_bh_atomic(); + printk(KERN_WARNING "%s: Restarting the chip...\n", + dev->name); /* Reset the Tx and Rx units. */ outl(PortReset, ioaddr + SCBPort); - /* We may get spurious interrupts here. But I don't think that they - may do much harm. 1999/12/09 SAW */ + if (sp->msg_level & NETIF_MSG_TX_ERR) + speedo_show_state(dev); udelay(10); - /* Disable interrupts. */ - outw(SCBMaskAll, ioaddr + SCBCmd); - synchronize_irq(); - speedo_tx_buffer_gc(dev); - /* Free as much as possible. - It helps to recover from a hang because of out-of-memory. - It also simplifies speedo_resume() in case TX ring is full or - close-to-be full. */ - speedo_purge_tx(dev); - speedo_refill_rx_buffers(dev, 1); - spin_lock_irqsave(&sp->lock, flags); speedo_resume(dev); - sp->rx_mode = -1; - dev->trans_start = jiffies; - spin_unlock_irqrestore(&sp->lock, flags); - set_rx_mode(dev); /* it takes the spinlock itself --SAW */ - /* Reset MII transceiver. Do it before starting the timer to serialize - mdio_xxx operations. Yes, it's a paranoya :-) 2000/05/09 SAW */ - reset_mii(dev); - sp->timer.expires = RUN_AT(2*HZ); - add_timer(&sp->timer); } + /* Reset the MII transceiver, suggested by Fred Young @ scalable.com. */ + if ((sp->phy[0] & 0x8000) == 0) { + int phy_addr = sp->phy[0] & 0x1f; + int advertising = mdio_read(dev, phy_addr, 4); + int mii_bmcr = mdio_read(dev, phy_addr, 0); + mdio_write(ioaddr, phy_addr, 0, 0x0400); + mdio_write(ioaddr, phy_addr, 1, 0x0000); + mdio_write(ioaddr, phy_addr, 4, 0x0000); + mdio_write(ioaddr, phy_addr, 0, 0x8000); +#ifdef honor_default_port + mdio_write(ioaddr, phy_addr, 0, mii_ctrl[dev->default_port & 7]); +#else + mdio_read(dev, phy_addr, 0); + mdio_write(ioaddr, phy_addr, 0, mii_bmcr); + mdio_write(ioaddr, phy_addr, 4, advertising); +#endif + } + sp->stats.tx_errors++; + dev->trans_start = jiffies; return; } +/* Handle the interrupt cases when something unexpected happens. */ +static void speedo_intr_error(struct net_device *dev, int intr_status) +{ + long ioaddr = dev->base_addr; + struct speedo_private *sp = (struct speedo_private *)dev->priv; + + if (intr_status & IntrRxSuspend) { + if ((intr_status & 0x003c) == 0x0028) /* No more Rx buffers. */ + outb(RxResumeNoResources, ioaddr + SCBCmd); + else if ((intr_status & 0x003c) == 0x0008) { /* No resources (why?!) */ + printk(KERN_DEBUG "%s: Unknown receiver error, status=%#4.4x.\n", + dev->name, intr_status); + /* No idea of what went wrong. Restart the receiver. */ + outl(virt_to_bus(sp->rx_ringp[sp->cur_rx % RX_RING_SIZE]), + ioaddr + SCBPointer); + outb(RxStart, ioaddr + SCBCmd); + } + sp->stats.rx_errors++; + } +} + + static int speedo_start_xmit(struct sk_buff *skb, struct net_device *dev) { @@ -1365,154 +1363,82 @@ speedo_start_xmit(struct sk_buff *skb, struct net_device *dev) long ioaddr = dev->base_addr; int entry; -#if ! defined(HAS_NETIF_QUEUE) - if (test_bit(0, (void*)&dev->tbusy) != 0) { + /* Block a timer-based transmit from overlapping. This could better be + done with atomic_swap(1, dev->tbusy), but set_bit() works as well. + If this ever occurs the queue layer is doing something evil! */ + if (netif_pause_tx_queue(dev) != 0) { int tickssofar = jiffies - dev->trans_start; if (tickssofar < TX_TIMEOUT - 2) return 1; if (tickssofar < TX_TIMEOUT) { /* Reap sent packets from the full Tx queue. */ - unsigned long flags; - /* Take a spinlock to make wait_for_cmd_done and sending the - command atomic. --SAW */ - spin_lock_irqsave(&sp->lock, flags); - wait_for_cmd_done(ioaddr + SCBCmd); outw(SCBTriggerIntr, ioaddr + SCBCmd); - spin_unlock_irqrestore(&sp->lock, flags); return 1; } speedo_tx_timeout(dev); return 1; } -#endif + + /* Caution: the write order is important here, set the base address + with the "ownership" bits last. */ { /* Prevent interrupts from changing the Tx ring from underneath us. */ unsigned long flags; spin_lock_irqsave(&sp->lock, flags); - - /* Check if there are enough space. */ - if ((int)(sp->cur_tx - sp->dirty_tx) >= TX_QUEUE_LIMIT) { - printk(KERN_ERR "%s: incorrect tbusy state, fixed.\n", dev->name); - netif_stop_queue(dev); - sp->tx_full = 1; - spin_unlock_irqrestore(&sp->lock, flags); - return 1; - } - /* Calculate the Tx descriptor entry. */ - entry = sp->cur_tx++ % TX_RING_SIZE; + entry = sp->cur_tx % TX_RING_SIZE; sp->tx_skbuff[entry] = skb; + /* Todo: be a little more clever about setting the interrupt bit. */ sp->tx_ring[entry].status = cpu_to_le32(CmdSuspend | CmdTx | CmdTxFlex); - if (!(entry & ((TX_RING_SIZE>>2)-1))) - sp->tx_ring[entry].status |= cpu_to_le32(CmdIntr); + sp->cur_tx++; sp->tx_ring[entry].link = virt_to_le32desc(&sp->tx_ring[sp->cur_tx % TX_RING_SIZE]); + /* We may nominally release the lock here. */ sp->tx_ring[entry].tx_desc_addr = virt_to_le32desc(&sp->tx_ring[entry].tx_buf_addr0); /* The data region is always in one buffer descriptor. */ sp->tx_ring[entry].count = cpu_to_le32(sp->tx_threshold); sp->tx_ring[entry].tx_buf_addr0 = virt_to_le32desc(skb->data); sp->tx_ring[entry].tx_buf_size0 = cpu_to_le32(skb->len); - /* Trigger the command unit resume. */ - wait_for_cmd_done(ioaddr + SCBCmd); - clear_suspend(sp->last_cmd); - /* We want the time window between clearing suspend flag on the previous - command and resuming CU to be as small as possible. - Interrupts in between are very undesired. --SAW */ - outb(CUResume, ioaddr + SCBCmd); - sp->last_cmd = (struct descriptor *)&sp->tx_ring[entry]; - - /* Leave room for set_rx_mode(). If there is no more space than reserved - for multicast filter mark the ring as full. */ - if ((int)(sp->cur_tx - sp->dirty_tx) >= TX_QUEUE_LIMIT) { - netif_stop_queue(dev); - sp->tx_full = 1; + /* Todo: perhaps leave the interrupt bit set if the Tx queue is more + than half full. Argument against: we should be receiving packets + and scavenging the queue. Argument for: if so, it shouldn't + matter. */ + { + struct descriptor *last_cmd = sp->last_cmd; + sp->last_cmd = (struct descriptor *)&sp->tx_ring[entry]; + clear_suspend(last_cmd); } - + if (sp->cur_tx - sp->dirty_tx >= TX_QUEUE_LIMIT) { + sp->tx_full = 1; + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); spin_unlock_irqrestore(&sp->lock, flags); } - + wait_for_cmd_done(dev); + outb(CUResume, ioaddr + SCBCmd); dev->trans_start = jiffies; return 0; } -static void speedo_tx_buffer_gc(struct net_device *dev) -{ - unsigned int dirty_tx; - struct speedo_private *sp = (struct speedo_private *)dev->priv; - - dirty_tx = sp->dirty_tx; - while ((int)(sp->cur_tx - dirty_tx) > 0) { - int entry = dirty_tx % TX_RING_SIZE; - int status = le32_to_cpu(sp->tx_ring[entry].status); - - if (speedo_debug > 5) - printk(KERN_DEBUG " scavenge candidate %d status %4.4x.\n", - entry, status); - if ((status & StatusComplete) == 0) - break; /* It still hasn't been processed. */ - if (status & TxUnderrun) - if (sp->tx_threshold < 0x01e08000) { - if (speedo_debug > 2) - printk(KERN_DEBUG "%s: TX underrun, threshold adjusted.\n", - dev->name); - sp->tx_threshold += 0x00040000; - } - /* Free the original skb. */ - if (sp->tx_skbuff[entry]) { - sp->stats.tx_packets++; /* Count only user packets. */ - sp->stats.tx_bytes += sp->tx_skbuff[entry]->len; - dev_free_skb(sp->tx_skbuff[entry]); - sp->tx_skbuff[entry] = 0; - } - dirty_tx++; - } - - if (speedo_debug && (int)(sp->cur_tx - dirty_tx) > TX_RING_SIZE) { - printk(KERN_ERR "out-of-sync dirty pointer, %d vs. %d," - " full=%d.\n", - dirty_tx, sp->cur_tx, sp->tx_full); - dirty_tx += TX_RING_SIZE; - } - - while (sp->mc_setup_head != NULL - && (int)(dirty_tx - sp->mc_setup_head->tx - 1) > 0) { - struct speedo_mc_block *t; - if (speedo_debug > 1) - printk(KERN_DEBUG "%s: freeing mc frame.\n", dev->name); - t = sp->mc_setup_head->next; - kfree(sp->mc_setup_head); - sp->mc_setup_head = t; - } - if (sp->mc_setup_head == NULL) - sp->mc_setup_tail = NULL; - - sp->dirty_tx = dirty_tx; -} - /* The interrupt handler does all of the Rx thread work and cleans up after the Tx thread. */ static void speedo_interrupt(int irq, void *dev_instance, struct pt_regs *regs) { struct net_device *dev = (struct net_device *)dev_instance; struct speedo_private *sp; - long ioaddr, boguscnt = max_interrupt_work; - unsigned short status; - -#ifndef final_version - if (dev == NULL) { - printk(KERN_ERR "speedo_interrupt(): irq %d for unknown device.\n", irq); - return; - } -#endif + long ioaddr; + int work_limit; + u16 status; ioaddr = dev->base_addr; sp = (struct speedo_private *)dev->priv; - + work_limit = sp->max_interrupt_work; #ifndef final_version /* A lock to prevent simultaneous entry on SMP machines. */ if (test_and_set_bit(0, (void*)&sp->in_interrupt)) { @@ -1521,211 +1447,108 @@ static void speedo_interrupt(int irq, void *dev_instance, struct pt_regs *regs) sp->in_interrupt = 0; /* Avoid halting machine. */ return; } - dev->interrupt = 1; #endif do { status = inw(ioaddr + SCBStatus); + + if ((status & IntrAllNormal) == 0 || status == 0xffff) + break; /* Acknowledge all of the current interrupt sources ASAP. */ - /* Will change from 0xfc00 to 0xff00 when we start handling - FCP and ER interrupts --Dragan */ - outw(status & 0xfc00, ioaddr + SCBStatus); + outw(status & IntrAllNormal, ioaddr + SCBStatus); - if (speedo_debug > 3) + if (sp->msg_level & NETIF_MSG_INTR) printk(KERN_DEBUG "%s: interrupt status=%#4.4x.\n", dev->name, status); - if ((status & 0xfc00) == 0) - break; - - /* Always check if all rx buffers are allocated. --SAW */ - speedo_refill_rx_buffers(dev, 0); - - if ((status & 0x5000) || /* Packet received, or Rx error. */ - (sp->rx_ring_state&(RrNoMem|RrPostponed)) == RrPostponed) - /* Need to gather the postponed packet. */ + if (status & (IntrRxDone|IntrRxSuspend)) speedo_rx(dev); - if (status & 0x1000) { + /* The command unit did something, scavenge finished Tx entries. */ + if (status & (IntrCmdDone | IntrCmdIdle | IntrDrvrIntr)) { + unsigned int dirty_tx; + /* We should nominally not need this lock. */ spin_lock(&sp->lock); - if ((status & 0x003c) == 0x0028) { /* No more Rx buffers. */ - struct RxFD *rxf; - printk(KERN_WARNING "%s: card reports no RX buffers.\n", - dev->name); - rxf = sp->rx_ringp[sp->cur_rx % RX_RING_SIZE]; - if (rxf == NULL) { - if (speedo_debug > 2) - printk(KERN_DEBUG - "%s: NULL cur_rx in speedo_interrupt().\n", - dev->name); - sp->rx_ring_state |= RrNoMem|RrNoResources; - } else if (rxf == sp->last_rxf) { - if (speedo_debug > 2) - printk(KERN_DEBUG - "%s: cur_rx is last in speedo_interrupt().\n", - dev->name); - sp->rx_ring_state |= RrNoMem|RrNoResources; - } else - outb(RxResumeNoResources, ioaddr + SCBCmd); - } else if ((status & 0x003c) == 0x0008) { /* No resources. */ - struct RxFD *rxf; - printk(KERN_WARNING "%s: card reports no resources.\n", - dev->name); - rxf = sp->rx_ringp[sp->cur_rx % RX_RING_SIZE]; - if (rxf == NULL) { - if (speedo_debug > 2) - printk(KERN_DEBUG - "%s: NULL cur_rx in speedo_interrupt().\n", - dev->name); - sp->rx_ring_state |= RrNoMem|RrNoResources; - } else if (rxf == sp->last_rxf) { - if (speedo_debug > 2) - printk(KERN_DEBUG - "%s: cur_rx is last in speedo_interrupt().\n", - dev->name); - sp->rx_ring_state |= RrNoMem|RrNoResources; - } else { - /* Restart the receiver. */ - outl(virt_to_bus(sp->rx_ringp[sp->cur_rx % RX_RING_SIZE]), - ioaddr + SCBPointer); - outb(RxStart, ioaddr + SCBCmd); + + dirty_tx = sp->dirty_tx; + while (sp->cur_tx - dirty_tx > 0) { + int entry = dirty_tx % TX_RING_SIZE; + int status = le32_to_cpu(sp->tx_ring[entry].status); + + if (sp->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG " scavenge candidate %d status %4.4x.\n", + entry, status); + if ((status & StatusComplete) == 0) { + /* Special case error check: look for descriptor that the + chip skipped(?). */ + if (sp->cur_tx - dirty_tx > 2 && + (sp->tx_ring[(dirty_tx+1) % TX_RING_SIZE].status + & cpu_to_le32(StatusComplete))) { + printk(KERN_ERR "%s: Command unit failed to mark " + "command %8.8x as complete at %d.\n", + dev->name, status, dirty_tx); + } else + break; /* It still hasn't been processed. */ + } + if ((status & TxUnderrun) && + (sp->tx_threshold < 0x01e08000)) { + sp->tx_threshold += 0x00040000; + if (sp->msg_level & NETIF_MSG_TX_ERR) + printk(KERN_DEBUG "%s: Tx threshold increased, " + "%#8.8x.\n", dev->name, sp->tx_threshold); } + /* Free the original skb. */ + if (sp->tx_skbuff[entry]) { + sp->stats.tx_packets++; /* Count only user packets. */ +#if LINUX_VERSION_CODE > 0x20127 + sp->stats.tx_bytes += sp->tx_skbuff[entry]->len; +#endif + dev_free_skb_irq(sp->tx_skbuff[entry]); + sp->tx_skbuff[entry] = 0; + } else if ((status & 0x70000) == CmdNOp) + sp->mc_setup_busy = 0; + dirty_tx++; } - sp->stats.rx_errors++; - spin_unlock(&sp->lock); - } - if ((sp->rx_ring_state&(RrNoMem|RrNoResources)) == RrNoResources) { - printk(KERN_WARNING - "%s: restart the receiver after a possible hang.\n", - dev->name); - spin_lock(&sp->lock); - /* Restart the receiver. - I'm not sure if it's always right to restart the receiver - here but I don't know another way to prevent receiver hangs. - 1999/12/25 SAW */ - outl(virt_to_bus(sp->rx_ringp[sp->cur_rx % RX_RING_SIZE]), - ioaddr + SCBPointer); - outb(RxStart, ioaddr + SCBCmd); - sp->rx_ring_state &= ~RrNoResources; - spin_unlock(&sp->lock); - } +#ifndef final_version + if (sp->cur_tx - dirty_tx > TX_RING_SIZE) { + printk(KERN_ERR "out-of-sync dirty pointer, %d vs. %d," + " full=%d.\n", + dirty_tx, sp->cur_tx, sp->tx_full); + dirty_tx += TX_RING_SIZE; + } +#endif - /* User interrupt, Command/Tx unit interrupt or CU not active. */ - if (status & 0xA400) { - spin_lock(&sp->lock); - speedo_tx_buffer_gc(dev); + sp->dirty_tx = dirty_tx; if (sp->tx_full - && (int)(sp->cur_tx - sp->dirty_tx) < TX_QUEUE_UNFULL) { - /* The ring is no longer full. */ + && sp->cur_tx - dirty_tx < TX_QUEUE_UNFULL) { + /* The ring is no longer full, clear tbusy. */ sp->tx_full = 0; - netif_wake_queue(dev); /* Attention: under a spinlock. --SAW */ + netif_resume_tx_queue(dev); } spin_unlock(&sp->lock); } - if (--boguscnt < 0) { + if (status & IntrRxSuspend) + speedo_intr_error(dev, status); + + if (--work_limit < 0) { printk(KERN_ERR "%s: Too much work at interrupt, status=0x%4.4x.\n", dev->name, status); /* Clear all interrupt sources. */ - /* Will change from 0xfc00 to 0xff00 when we start handling - FCP and ER interrupts --Dragan */ outl(0xfc00, ioaddr + SCBStatus); break; } } while (1); - if (speedo_debug > 3) + if (sp->msg_level & NETIF_MSG_INTR) printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", - dev->name, inw(ioaddr + SCBStatus)); + dev->name, (int)inw(ioaddr + SCBStatus)); - dev->interrupt = 0; clear_bit(0, (void*)&sp->in_interrupt); return; } -static inline struct RxFD *speedo_rx_alloc(struct net_device *dev, int entry) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - struct RxFD *rxf; - struct sk_buff *skb; - /* Get a fresh skbuff to replace the consumed one. */ - skb = dev_alloc_skb(PKT_BUF_SZ + sizeof(struct RxFD)); - sp->rx_skbuff[entry] = skb; - if (skb == NULL) { - sp->rx_ringp[entry] = NULL; - return NULL; - } - rxf = sp->rx_ringp[entry] = (struct RxFD *)skb->tail; - skb->dev = dev; - skb_reserve(skb, sizeof(struct RxFD)); - rxf->rx_buf_addr = virt_to_bus(skb->tail); - return rxf; -} - -static inline void speedo_rx_link(struct net_device *dev, int entry, - struct RxFD *rxf) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - rxf->status = cpu_to_le32(0xC0000001); /* '1' for driver use only. */ - rxf->link = 0; /* None yet. */ - rxf->count = cpu_to_le32(PKT_BUF_SZ << 16); - sp->last_rxf->link = virt_to_le32desc(rxf); - sp->last_rxf->status &= cpu_to_le32(~0xC0000000); - sp->last_rxf = rxf; -} - -static int speedo_refill_rx_buf(struct net_device *dev, int force) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - int entry; - struct RxFD *rxf; - - entry = sp->dirty_rx % RX_RING_SIZE; - if (sp->rx_skbuff[entry] == NULL) { - rxf = speedo_rx_alloc(dev, entry); - if (rxf == NULL) { - unsigned int forw; - int forw_entry; - if (speedo_debug > 2 || !(sp->rx_ring_state & RrOOMReported)) { - printk(KERN_WARNING "%s: can't fill rx buffer (force %d)!\n", - dev->name, force); - speedo_show_state(dev); - sp->rx_ring_state |= RrOOMReported; - } - if (!force) - return -1; /* Better luck next time! */ - /* Borrow an skb from one of next entries. */ - for (forw = sp->dirty_rx + 1; forw != sp->cur_rx; forw++) - if (sp->rx_skbuff[forw % RX_RING_SIZE] != NULL) - break; - if (forw == sp->cur_rx) - return -1; - forw_entry = forw % RX_RING_SIZE; - sp->rx_skbuff[entry] = sp->rx_skbuff[forw_entry]; - sp->rx_skbuff[forw_entry] = NULL; - rxf = sp->rx_ringp[forw_entry]; - sp->rx_ringp[forw_entry] = NULL; - sp->rx_ringp[entry] = rxf; - } - } else { - rxf = sp->rx_ringp[entry]; - } - speedo_rx_link(dev, entry, rxf); - sp->dirty_rx++; - sp->rx_ring_state &= ~(RrNoMem|RrOOMReported); /* Mark the progress. */ - return 0; -} - -static void speedo_refill_rx_buffers(struct net_device *dev, int force) -{ - struct speedo_private *sp = (struct speedo_private *)dev->priv; - - /* Refill the RX ring. */ - while ((int)(sp->cur_rx - sp->dirty_rx) > 0 && - speedo_refill_rx_buf(dev, force) != -1); -} - static int speedo_rx(struct net_device *dev) { @@ -1733,63 +1556,48 @@ speedo_rx(struct net_device *dev) int entry = sp->cur_rx % RX_RING_SIZE; int status; int rx_work_limit = sp->dirty_rx + RX_RING_SIZE - sp->cur_rx; - int alloc_ok = 1; - if (speedo_debug > 4) + if (sp->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG " In speedo_rx().\n"); /* If we own the next entry, it's a new packet. Send it up. */ while (sp->rx_ringp[entry] != NULL && (status = le32_to_cpu(sp->rx_ringp[entry]->status)) & RxComplete) { - int pkt_len = le32_to_cpu(sp->rx_ringp[entry]->count) & 0x3fff; + int desc_count = le32_to_cpu(sp->rx_ringp[entry]->count); + int pkt_len = desc_count & 0x07ff; if (--rx_work_limit < 0) break; - - /* Check for a rare out-of-memory case: the current buffer is - the last buffer allocated in the RX ring. --SAW */ - if (sp->last_rxf == sp->rx_ringp[entry]) { - /* Postpone the packet. It'll be reaped at an interrupt when this - packet is no longer the last packet in the ring. */ - if (speedo_debug > 2) - printk(KERN_DEBUG "%s: RX packet postponed!\n", - dev->name); - sp->rx_ring_state |= RrPostponed; - break; - } - - if (speedo_debug > 4) + if (sp->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG " speedo_rx() status %8.8x len %d.\n", status, pkt_len); if ((status & (RxErrTooBig|RxOK|0x0f90)) != RxOK) { if (status & RxErrTooBig) printk(KERN_ERR "%s: Ethernet frame overran the Rx buffer, " "status %8.8x!\n", dev->name, status); - else if (! (status & RxOK)) { + else if ( ! (status & RxOK)) { /* There was a fatal error. This *should* be impossible. */ sp->stats.rx_errors++; printk(KERN_ERR "%s: Anomalous event in speedo_rx(), " - "status %8.8x.\n", - dev->name, status); + "status %8.8x.\n", dev->name, status); } } else { struct sk_buff *skb; + if (sp->drv_flags & HasChksum) + pkt_len -= 2; + /* Check if the packet is long enough to just accept without copying to a properly sized skbuff. */ - if (pkt_len < rx_copybreak + if (pkt_len < sp->rx_copybreak && (skb = dev_alloc_skb(pkt_len + 2)) != 0) { skb->dev = dev; skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ /* 'skb_put()' points to the start of sk_buff data area. */ -#if !defined(__alpha__) /* Packet is in one chunk -- we can copy + cksum. */ eth_copy_and_sum(skb, sp->rx_skbuff[entry]->tail, pkt_len, 0); skb_put(skb, pkt_len); -#else - memcpy(skb_put(skb, pkt_len), sp->rx_skbuff[entry]->tail, - pkt_len); -#endif } else { + void *temp; /* Pass up the already-filled skbuff. */ skb = sp->rx_skbuff[entry]; if (skb == NULL) { @@ -1798,27 +1606,64 @@ speedo_rx(struct net_device *dev) break; } sp->rx_skbuff[entry] = NULL; - skb_put(skb, pkt_len); + temp = skb_put(skb, pkt_len); +#if !defined(final_version) && !defined(__powerpc__) + if (bus_to_virt(sp->rx_ringp[entry]->rx_buf_addr) != temp) + printk(KERN_ERR "%s: Rx consistency error -- the skbuff " + "addresses do not match in speedo_rx: %p vs. %p " + "/ %p.\n", dev->name, + bus_to_virt(sp->rx_ringp[entry]->rx_buf_addr), + skb->head, temp); +#endif sp->rx_ringp[entry] = NULL; } skb->protocol = eth_type_trans(skb, dev); + if (sp->drv_flags & HasChksum) { +#if 0 + u16 csum = get_unaligned((u16*)(skb->head + pkt_len)) + if (desc_count & 0x8000) + skb->ip_summed = CHECKSUM_UNNECESSARY; +#endif + } netif_rx(skb); sp->stats.rx_packets++; +#if LINUX_VERSION_CODE > 0x20127 sp->stats.rx_bytes += pkt_len; +#endif } entry = (++sp->cur_rx) % RX_RING_SIZE; - sp->rx_ring_state &= ~RrPostponed; - /* Refill the recently taken buffers. - Do it one-by-one to handle traffic bursts better. */ - if (alloc_ok && speedo_refill_rx_buf(dev, 0) == -1) - alloc_ok = 0; } - /* Try hard to refill the recently taken buffers. */ - speedo_refill_rx_buffers(dev, 1); + /* Refill the Rx ring buffers. */ + for (; sp->cur_rx - sp->dirty_rx > 0; sp->dirty_rx++) { + struct RxFD *rxf; + entry = sp->dirty_rx % RX_RING_SIZE; + if (sp->rx_skbuff[entry] == NULL) { + struct sk_buff *skb; + /* Get a fresh skbuff to replace the consumed one. */ + skb = dev_alloc_skb(sp->rx_buf_sz); + sp->rx_skbuff[entry] = skb; + if (skb == NULL) { + sp->rx_ringp[entry] = NULL; + sp->alloc_failures++; + break; /* Better luck next time! */ + } + rxf = sp->rx_ringp[entry] = (struct RxFD *)skb->tail; + skb->dev = dev; + skb_reserve(skb, sizeof(struct RxFD)); + rxf->rx_buf_addr = virt_to_le32desc(skb->tail); + } else { + rxf = sp->rx_ringp[entry]; + } + rxf->status = cpu_to_le32(0xC0000001); /* '1' for driver use only. */ + rxf->link = 0; /* None yet. */ + rxf->count = cpu_to_le32((sp->rx_buf_sz - sizeof(struct RxFD)) << 16); + sp->last_rxf->link = virt_to_le32desc(rxf); + sp->last_rxf->status &= cpu_to_le32(~0xC0000000); + sp->last_rxf = rxf; + } sp->last_rx_time = jiffies; - return 0; } @@ -1829,34 +1674,33 @@ speedo_close(struct net_device *dev) struct speedo_private *sp = (struct speedo_private *)dev->priv; int i; - dev->start = 0; - netif_stop_queue(dev); + netif_stop_tx_queue(dev); - if (speedo_debug > 1) - printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x.\n", - dev->name, inw(ioaddr + SCBStatus)); + if (sp->msg_level & NETIF_MSG_IFDOWN) + printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x.\n" + KERN_DEBUG "%s: Cumlative allocation failures: %d.\n", + dev->name, (int)inw(ioaddr + SCBStatus), + dev->name, sp->alloc_failures); /* Shut off the media monitoring timer. */ - start_bh_atomic(); del_timer(&sp->timer); - end_bh_atomic(); /* Shutting down the chip nicely fails to disable flow control. So.. */ outl(PortPartialReset, ioaddr + SCBPort); free_irq(dev->irq, dev); - /* Print a few items for debugging. */ - if (speedo_debug > 3) - speedo_show_state(dev); - - /* Free all the skbuffs in the Rx and Tx queues. */ + /* Free all the skbuffs in the Rx and Tx queues. */ for (i = 0; i < RX_RING_SIZE; i++) { struct sk_buff *skb = sp->rx_skbuff[i]; sp->rx_skbuff[i] = 0; /* Clear the Rx descriptors. */ - if (skb) + if (skb) { +#if LINUX_VERSION_CODE < 0x20100 + skb->free = 1; +#endif dev_free_skb(skb); + } } for (i = 0; i < TX_RING_SIZE; i++) { @@ -1866,18 +1710,17 @@ speedo_close(struct net_device *dev) if (skb) dev_free_skb(skb); } - - /* Free multicast setting blocks. */ - for (i = 0; sp->mc_setup_head != NULL; i++) { - struct speedo_mc_block *t; - t = sp->mc_setup_head->next; - kfree(sp->mc_setup_head); - sp->mc_setup_head = t; + if (sp->mc_setup_frm) { + kfree(sp->mc_setup_frm); + sp->mc_setup_frm_len = 0; } - sp->mc_setup_tail = NULL; - if (speedo_debug > 0) - printk(KERN_DEBUG "%s: %d multicast blocks dropped.\n", dev->name, i); + /* Print a few items for debugging. */ + if (sp->msg_level & NETIF_MSG_IFDOWN) + speedo_show_state(dev); + + /* Alt: acpi_set_pwr_state(pdev, sp->acpi_pwr); */ + acpi_set_pwr_state(sp->pci_dev, ACPI_D2); MOD_DEC_USE_COUNT; return 0; @@ -1895,8 +1738,7 @@ speedo_close(struct net_device *dev) Oh, and incoming frames are dropped while executing dump-stats! */ -static struct enet_statistics * -speedo_get_stats(struct net_device *dev) +static struct net_device_stats *speedo_get_stats(struct net_device *dev) { struct speedo_private *sp = (struct speedo_private *)dev->priv; long ioaddr = dev->base_addr; @@ -1915,14 +1757,9 @@ speedo_get_stats(struct net_device *dev) sp->stats.rx_fifo_errors += le32_to_cpu(sp->lstats.rx_overrun_errs); sp->stats.rx_length_errors += le32_to_cpu(sp->lstats.rx_runt_errs); sp->lstats.done_marker = 0x0000; - if (dev->start) { - unsigned long flags; - /* Take a spinlock to make wait_for_cmd_done and sending the - command atomic. --SAW */ - spin_lock_irqsave(&sp->lock, flags); - wait_for_cmd_done(ioaddr + SCBCmd); + if (netif_running(dev)) { + wait_for_cmd_done(dev); outb(CUDumpStats, ioaddr + SCBCmd); - spin_unlock_irqrestore(&sp->lock, flags); } } return &sp->stats; @@ -1933,26 +1770,68 @@ static int speedo_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) struct speedo_private *sp = (struct speedo_private *)dev->priv; long ioaddr = dev->base_addr; u16 *data = (u16 *)&rq->ifr_data; + u32 *data32 = (void *)&rq->ifr_data; int phy = sp->phy[0] & 0x1f; + int saved_acpi; - switch(cmd) { - case SIOCDEVPRIVATE: /* Get the address of the PHY in use. */ + switch(cmd) { + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ data[0] = phy; - case SIOCDEVPRIVATE+1: /* Read the specified MII register. */ - /* FIXME: these operations need to be serialized with MDIO - access from the timeout handler. - They are currently serialized only with MDIO access from the - timer routine. 2000/05/09 SAW */ - start_bh_atomic(); - data[3] = mdio_read(ioaddr, data[0], data[1]); - end_bh_atomic(); + /* Fall Through */ + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + saved_acpi = acpi_set_pwr_state(sp->pci_dev, ACPI_D0); + data[3] = mdio_read(dev, data[0], data[1]); + acpi_set_pwr_state(sp->pci_dev, saved_acpi); return 0; - case SIOCDEVPRIVATE+2: /* Write the specified MII register */ + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ if (!capable(CAP_NET_ADMIN)) return -EPERM; - start_bh_atomic(); + if (data[0] == sp->phy[0]) { + u16 value = data[2]; + switch (data[1]) { + case 0: + /* Check for autonegotiation on or reset. */ + sp->medialock = (value & 0x9000) ? 0 : 1; + if (sp->medialock) { + sp->full_duplex = (value & 0x0100) ? 1 : 0; + sp->rx_mode = RxInvalidMode; + } + break; + case 4: sp->advertising = value; break; + } + } + saved_acpi = acpi_set_pwr_state(sp->pci_dev, ACPI_D0); mdio_write(ioaddr, data[0], data[1], data[2]); - end_bh_atomic(); + acpi_set_pwr_state(sp->pci_dev, saved_acpi); + return 0; + case SIOCGPARAMS: + data32[0] = sp->msg_level; + data32[1] = sp->multicast_filter_limit; + data32[2] = sp->max_interrupt_work; + data32[3] = sp->rx_copybreak; +#if 0 + /* No room in the ioctl() to set these. */ + data32[4] = txfifo; + data32[5] = rxfifo; +#endif + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + sp->msg_level = data32[0]; + sp->multicast_filter_limit = data32[1]; + sp->max_interrupt_work = data32[2]; + sp->rx_copybreak = data32[3]; +#if 0 + /* No room in the ioctl() to set these. */ + if (data32[4] < 16) + txfifo = data32[4]; + if (data32[5] < 16) + rxfifo = data32[5]; +#endif return 0; default: return -EOPNOTSUPP; @@ -1978,21 +1857,18 @@ static void set_rx_mode(struct net_device *dev) int entry, i; if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ - new_rx_mode = 3; + new_rx_mode = AcceptAllMulticast | AcceptAllPhys; } else if ((dev->flags & IFF_ALLMULTI) || - dev->mc_count > multicast_filter_limit) { - new_rx_mode = 1; + dev->mc_count > sp->multicast_filter_limit) { + new_rx_mode = AcceptAllMulticast; } else new_rx_mode = 0; - if (speedo_debug > 3) - printk(KERN_DEBUG "%s: set_rx_mode %d -> %d\n", dev->name, - sp->rx_mode, new_rx_mode); - - if ((int)(sp->cur_tx - sp->dirty_tx) > TX_RING_SIZE - TX_MULTICAST_SIZE) { - /* The Tx ring is full -- don't add anything! Hope the mode will be - * set again later. */ - sp->rx_mode = -1; + if (sp->cur_tx - sp->dirty_tx >= TX_RING_SIZE - 1) { + /* The Tx ring is full -- don't add anything! Presumably the new mode + is in config_cmd_data and will be added anyway, otherwise we wait + for a timer tick or the mode to change again. */ + sp->rx_mode = RxInvalidMode; return; } @@ -2000,40 +1876,41 @@ static void set_rx_mode(struct net_device *dev) u8 *config_cmd_data; spin_lock_irqsave(&sp->lock, flags); - entry = sp->cur_tx++ % TX_RING_SIZE; + entry = sp->cur_tx % TX_RING_SIZE; last_cmd = sp->last_cmd; sp->last_cmd = (struct descriptor *)&sp->tx_ring[entry]; sp->tx_skbuff[entry] = 0; /* Redundant. */ sp->tx_ring[entry].status = cpu_to_le32(CmdSuspend | CmdConfigure); + sp->cur_tx++; sp->tx_ring[entry].link = virt_to_le32desc(&sp->tx_ring[(entry + 1) % TX_RING_SIZE]); + /* We may nominally release the lock here. */ + config_cmd_data = (void *)&sp->tx_ring[entry].tx_desc_addr; /* Construct a full CmdConfig frame. */ memcpy(config_cmd_data, i82558_config_cmd, sizeof(i82558_config_cmd)); config_cmd_data[1] = (txfifo << 4) | rxfifo; config_cmd_data[4] = rxdmacount; config_cmd_data[5] = txdmacount + 0x80; - config_cmd_data[15] |= (new_rx_mode & 2) ? 1 : 0; - /* 0x80 doesn't disable FC 0x84 does. - Disable Flow control since we are not ACK-ing any FC interrupts - for now. --Dragan */ - config_cmd_data[19] = 0x84; + config_cmd_data[6] |= (new_rx_mode & AcceptErr) ? 0x80 : 0; + config_cmd_data[7] &= (new_rx_mode & AcceptRunt) ? ~0x01 : ~0; + if (sp->drv_flags & HasChksum) + config_cmd_data[9] |= 1; + config_cmd_data[15] |= (new_rx_mode & AcceptAllPhys) ? 1 : 0; + config_cmd_data[19] = sp->flow_ctrl ? 0xBD : 0x80; config_cmd_data[19] |= sp->full_duplex ? 0x40 : 0; - config_cmd_data[21] = (new_rx_mode & 1) ? 0x0D : 0x05; + config_cmd_data[21] = (new_rx_mode & AcceptAllMulticast) ? 0x0D : 0x05; if (sp->phy[0] & 0x8000) { /* Use the AUI port instead. */ config_cmd_data[15] |= 0x80; config_cmd_data[8] = 0; } /* Trigger the command unit resume. */ - wait_for_cmd_done(ioaddr + SCBCmd); + wait_for_cmd_done(dev); clear_suspend(last_cmd); outb(CUResume, ioaddr + SCBCmd); - if ((int)(sp->cur_tx - sp->dirty_tx) >= TX_QUEUE_LIMIT) { - netif_stop_queue(dev); - sp->tx_full = 1; - } spin_unlock_irqrestore(&sp->lock, flags); + sp->last_cmd_time = jiffies; } if (new_rx_mode == 0 && dev->mc_count < 4) { @@ -2043,14 +1920,16 @@ static void set_rx_mode(struct net_device *dev) u16 *setup_params, *eaddrs; spin_lock_irqsave(&sp->lock, flags); - entry = sp->cur_tx++ % TX_RING_SIZE; + entry = sp->cur_tx % TX_RING_SIZE; last_cmd = sp->last_cmd; sp->last_cmd = (struct descriptor *)&sp->tx_ring[entry]; sp->tx_skbuff[entry] = 0; sp->tx_ring[entry].status = cpu_to_le32(CmdSuspend | CmdMulticastList); + sp->cur_tx++; sp->tx_ring[entry].link = virt_to_le32desc(&sp->tx_ring[(entry + 1) % TX_RING_SIZE]); + /* We may nominally release the lock here. */ sp->tx_ring[entry].tx_desc_addr = 0; /* Really MC list count. */ setup_params = (u16 *)&sp->tx_ring[entry].tx_desc_addr; *setup_params++ = cpu_to_le16(dev->mc_count*6); @@ -2063,38 +1942,45 @@ static void set_rx_mode(struct net_device *dev) *setup_params++ = *eaddrs++; } - wait_for_cmd_done(ioaddr + SCBCmd); + wait_for_cmd_done(dev); clear_suspend(last_cmd); /* Immediately trigger the command unit resume. */ outb(CUResume, ioaddr + SCBCmd); - - if ((int)(sp->cur_tx - sp->dirty_tx) >= TX_QUEUE_LIMIT) { - netif_stop_queue(dev); - sp->tx_full = 1; - } spin_unlock_irqrestore(&sp->lock, flags); + sp->last_cmd_time = jiffies; } else if (new_rx_mode == 0) { struct dev_mc_list *mclist; u16 *setup_params, *eaddrs; - struct speedo_mc_block *mc_blk; - struct descriptor *mc_setup_frm; + struct descriptor *mc_setup_frm = sp->mc_setup_frm; int i; - mc_blk = kmalloc(sizeof(*mc_blk) + 2 + multicast_filter_limit*6, - GFP_ATOMIC); - if (mc_blk == NULL) { - printk(KERN_ERR "%s: Failed to allocate a setup frame.\n", - dev->name); - sp->rx_mode = -1; /* We failed, try again. */ + if (sp->mc_setup_frm_len < 10 + dev->mc_count*6 + || sp->mc_setup_frm == NULL) { + /* Allocate a full setup frame, 10bytes + <max addrs>. */ + if (sp->mc_setup_frm) + kfree(sp->mc_setup_frm); + sp->mc_setup_busy = 0; + sp->mc_setup_frm_len = 10 + sp->multicast_filter_limit*6; + sp->mc_setup_frm = kmalloc(sp->mc_setup_frm_len, GFP_ATOMIC); + if (sp->mc_setup_frm == NULL) { + printk(KERN_ERR "%s: Failed to allocate a setup frame.\n", + dev->name); + sp->rx_mode = RxInvalidMode; /* We failed, try again. */ + return; + } + } + /* If we are busy, someone might be quickly adding to the MC list. + Try again later when the list updates stop. */ + if (sp->mc_setup_busy) { + sp->rx_mode = RxInvalidMode; return; } - mc_blk->next = NULL; - mc_setup_frm = &mc_blk->frame; - + mc_setup_frm = sp->mc_setup_frm; /* Fill the setup frame. */ - if (speedo_debug > 1) - printk(KERN_DEBUG "%s: Constructing a setup frame at %p.\n", - dev->name, mc_setup_frm); + if (sp->msg_level & NETIF_MSG_RXFILTER) + printk(KERN_DEBUG "%s: Constructing a setup frame at %p, " + "%d bytes.\n", + dev->name, sp->mc_setup_frm, sp->mc_setup_frm_len); mc_setup_frm->cmd_status = cpu_to_le32(CmdSuspend | CmdIntr | CmdMulticastList); /* Link set below. */ @@ -2111,81 +1997,125 @@ static void set_rx_mode(struct net_device *dev) /* Disable interrupts while playing with the Tx Cmd list. */ spin_lock_irqsave(&sp->lock, flags); - - if (sp->mc_setup_tail) - sp->mc_setup_tail->next = mc_blk; - else - sp->mc_setup_head = mc_blk; - sp->mc_setup_tail = mc_blk; - mc_blk->tx = sp->cur_tx; - - entry = sp->cur_tx++ % TX_RING_SIZE; + entry = sp->cur_tx % TX_RING_SIZE; last_cmd = sp->last_cmd; sp->last_cmd = mc_setup_frm; + sp->mc_setup_busy++; /* Change the command to a NoOp, pointing to the CmdMulti command. */ sp->tx_skbuff[entry] = 0; sp->tx_ring[entry].status = cpu_to_le32(CmdNOp); + sp->cur_tx++; sp->tx_ring[entry].link = virt_to_le32desc(mc_setup_frm); + /* We may nominally release the lock here. */ /* Set the link in the setup frame. */ mc_setup_frm->link = virt_to_le32desc(&(sp->tx_ring[(entry+1) % TX_RING_SIZE])); - wait_for_cmd_done(ioaddr + SCBCmd); + wait_for_cmd_done(dev); clear_suspend(last_cmd); /* Immediately trigger the command unit resume. */ outb(CUResume, ioaddr + SCBCmd); - - if ((int)(sp->cur_tx - sp->dirty_tx) >= TX_QUEUE_LIMIT) { - netif_stop_queue(dev); - sp->tx_full = 1; - } spin_unlock_irqrestore(&sp->lock, flags); - - if (speedo_debug > 5) - printk(" CmdMCSetup frame length %d in entry %d.\n", + sp->last_cmd_time = jiffies; + if (sp->msg_level & NETIF_MSG_RXFILTER) + printk(KERN_DEBUG " CmdMCSetup frame length %d in entry %d.\n", dev->mc_count, entry); } sp->rx_mode = new_rx_mode; } + +static int speedo_pwr_event(void *dev_instance, int event) +{ + struct net_device *dev = dev_instance; + struct speedo_private *np = (struct speedo_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_ATTACH: + MOD_INC_USE_COUNT; + break; + case DRV_SUSPEND: + outl(PortPartialReset, ioaddr + SCBPort); + break; + case DRV_RESUME: + speedo_resume(dev); + np->rx_mode = RxInvalidMode; + np->flow_ctrl = np->partner = 0; + set_rx_mode(dev); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + unregister_netdev(dev); + release_region(dev->base_addr, pci_id_tbl[np->chip_id].io_size); +#ifndef USE_IO_OPS + iounmap((char *)dev->base_addr); +#endif + for (devp = &root_speedo_dev; *devp; devp = next) { + next = &((struct speedo_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (np->priv_addr) + kfree(np->priv_addr); + kfree(dev); + MOD_DEC_USE_COUNT; + break; + } + case DRV_PWR_DOWN: + case DRV_PWR_UP: + acpi_set_pwr_state(np->pci_dev, event==DRV_PWR_DOWN ? ACPI_D3:ACPI_D0); + break; + case DRV_PWR_WakeOn: + default: + return -1; + } + + return 0; +} -#ifdef MODULE + +#if defined(MODULE) || (LINUX_VERSION_CODE >= 0x020400) int init_module(void) { int cards_found; - if (debug >= 0 && speedo_debug != debug) - printk(KERN_INFO "eepro100.c: Debug level is %d.\n", debug); - if (debug >= 0) - speedo_debug = debug; - /* Always emit the version message. */ - if (speedo_debug) - printk(KERN_INFO "%s", version); - - cards_found = eepro100_init(); - if (cards_found <= 0) { + /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + cards_found = pci_drv_register(&eepro100_drv_id, NULL); + if (cards_found < 0) printk(KERN_INFO "eepro100: No cards found, driver not installed.\n"); - return -ENODEV; - } - return 0; + return cards_found; } -void -cleanup_module(void) +void cleanup_module(void) { struct net_device *next_dev; + pci_drv_unregister(&eepro100_drv_id); + /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ while (root_speedo_dev) { struct speedo_private *sp = (void *)root_speedo_dev->priv; unregister_netdev(root_speedo_dev); - release_region(root_speedo_dev->base_addr, SPEEDO3_TOTAL_SIZE); -#ifndef USE_IO +#ifdef USE_IO_OPS + release_region(root_speedo_dev->base_addr, + pci_id_tbl[sp->chip_id].io_size); +#else iounmap((char *)root_speedo_dev->base_addr); #endif + acpi_set_pwr_state(sp->pci_dev, sp->acpi_pwr); next_dev = sp->next_module; if (sp->priv_addr) kfree(sp->priv_addr); @@ -2194,25 +2124,30 @@ cleanup_module(void) } } +#if (LINUX_VERSION_CODE >= 0x020400) && 0 +module_init(init_module); +module_exit(cleanup_module); +#endif + #else /* not MODULE */ -int eepro100_probe(void) +int eepro100_probe(struct net_device *dev) { - int cards_found = 0; - - cards_found = eepro100_init(); + int cards_found = pci_drv_register(&eepro100_drv_id, dev); - if (speedo_debug > 0 && cards_found) - printk(version); + /* Only emit the version if the driver is being used. */ + if (cards_found >= 0) + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); - return cards_found ? 0 : -ENODEV; + return cards_found; } #endif /* MODULE */ /* * Local variables: - * compile-command: "gcc -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c eepro100.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" - * SMP-compile-command: "gcc -D__SMP__ -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c eepro100.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" + * compile-command: "make KERNVER=`uname -r` eepro100.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c eepro100.c" + * simple-compile-command: "gcc -DMODULE -O6 -c eepro100.c" * c-indent-level: 4 * c-basic-offset: 4 * tab-width: 4 diff --git a/linux/src/drivers/net/epic100.c b/linux/src/drivers/net/epic100.c index 1ff99fe..b44f291 100644 --- a/linux/src/drivers/net/epic100.c +++ b/linux/src/drivers/net/epic100.c @@ -1,135 +1,177 @@ /* epic100.c: A SMC 83c170 EPIC/100 Fast Ethernet driver for Linux. */ /* - Written 1997-1998 by Donald Becker. + Written/copyright 1997-2002 by Donald Becker. - This software may be used and distributed according to the terms - of the GNU Public License, incorporated herein by reference. - All other rights reserved. + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. This driver is for the SMC83c170/175 "EPIC" series, as used on the SMC EtherPower II 9432 PCI adapter, and several CardBus cards. - The author may be reached as becker@CESDIS.gsfc.nasa.gov, or C/O - Center of Excellence in Space Data and Information Sciences - Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771 + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 914 Bay Ridge Road, Suite 220 + Annapolis MD 21403 - Support and updates available at - http://cesdis.gsfc.nasa.gov/linux/drivers/epic100.html + Information and updates available at + http://www.scyld.com/network/epic100.html */ -static const char *version = -"epic100.c:v1.03 8/7/98 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/epic100.html\n"; +/* These identify the driver base version and may not be removed. */ +static const char version[] = +"epic100.c:v1.18 7/22/2003 Written by Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/network/epic100.html\n"; -/* A few user-configurable values. */ +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ -/* Keep the ring sizes a power of two for efficiency. - Making the Tx ring too large decreases the effectiveness of channel - bonding and packet priority. - There are no ill effects from too-large receive rings. */ -#define TX_RING_SIZE 16 -#define RX_RING_SIZE 32 +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; + +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ +static int max_interrupt_work = 32; + +/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). + This chip uses a 64 element hash table based on the Ethernet CRC. */ +static int multicast_filter_limit = 32; + +/* Used to set a special media speed or duplex. + Both 'options[]' and 'full_duplex[]' should exist for driver + interoperability. + The media type is usually passed in 'options[]'. + The default is autonegotation for speed and duplex. + This should rarely be overridden. + Use option values 0x10/0x20 for 10Mbps, 0x100,0x200 for 100Mbps. + Use option values 0x10 and 0x100 for forcing half duplex fixed speed. + Use option values 0x20 and 0x200 for forcing full duplex operation. +*/ +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; /* Set the copy breakpoint for the copy-only-tiny-frames scheme. Setting to > 1518 effectively disables this feature. */ -static int rx_copybreak = 200; +static int rx_copybreak = 0; -/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ -static int max_interrupt_work = 10; +/* Operational parameters that are set at compile time. */ + +/* Keep the ring sizes a power of two for operational efficiency. + The compiler will convert <unsigned>'%'<2^N> into a bit mask. + Making the Tx ring too large decreases the effectiveness of channel + bonding and packet priority. + Too-large receive rings only waste memory. */ +#define TX_RING_SIZE 16 +#define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */ +#define RX_RING_SIZE 32 /* Operational parameters that usually are not changed. */ /* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT ((2000*HZ)/1000) +#define TX_TIMEOUT (6*HZ) -#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. This is not a limit, + but a way to keep a consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 /* Bytes transferred to chip before transmission starts. */ -#define TX_FIFO_THRESH 256 /* Rounded down to 4 byte units. */ +/* Initial threshold, increased on underflow, rounded down to 4 byte units. */ +#define TX_FIFO_THRESH 256 #define RX_FIFO_THRESH 1 /* 0-3, 0==32, 64,96, or 3==128 bytes */ +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif + #include <linux/config.h> -#include <linux/version.h> /* Evil, but neccessary */ -#ifdef MODULE -#ifdef MODVERSIONS +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + +#include <linux/version.h> +#if defined(MODVERSIONS) #include <linux/modversions.h> #endif #include <linux/module.h> -#else -#define MOD_INC_USE_COUNT -#define MOD_DEC_USE_COUNT -#endif #include <linux/kernel.h> -#include <linux/sched.h> #include <linux/string.h> #include <linux/timer.h> -#include <linux/ptrace.h> #include <linux/errno.h> #include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else #include <linux/malloc.h> +#endif #include <linux/interrupt.h> #include <linux/pci.h> -#if LINUX_VERSION_CODE >= 0x20155 -#define PCI_SUPPORT_VER2 -#else -#include <linux/bios32.h> -#endif #include <linux/delay.h> - -#include <asm/processor.h> /* Processor type for cache alignment. */ -#include <asm/bitops.h> -#include <asm/io.h> -#include <asm/dma.h> - #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> +#include <asm/bitops.h> +#include <asm/io.h> -/* Kernel compatibility defines, common to David Hind's PCMCIA package. - This is only in the support-all-kernels source code. */ +#if LINUX_VERSION_CODE >= 0x20300 +#include <linux/spinlock.h> +#elif LINUX_VERSION_CODE >= 0x20200 +#include <asm/spinlock.h> +#endif -#if ! defined (LINUX_VERSION_CODE) || LINUX_VERSION_CODE < 0x20000 -#warning This driver version is only for kernel versions 2.0.0 and later. +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" #endif -#define RUN_AT(x) (jiffies + (x)) +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif -#if defined(MODULE) && (LINUX_VERSION_CODE >= 0x20115) -MODULE_AUTHOR("Donald Becker <becker@cesdis.gsfc.nasa.gov>"); +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); MODULE_DESCRIPTION("SMC 83c170 EPIC series Ethernet driver"); +MODULE_LICENSE("GPL"); MODULE_PARM(debug, "i"); -MODULE_PARM(options, "1-" __MODULE_STRING(8) "i"); -MODULE_PARM(full_duplex, "1-" __MODULE_STRING(8) "i"); -MODULE_PARM(rx_copybreak, "i"); MODULE_PARM(max_interrupt_work, "i"); -#endif -#if LINUX_VERSION_CODE < 0x20123 -#define test_and_set_bit(val, addr) set_bit(val, addr) -#endif -#if LINUX_VERSION_CODE <= 0x20139 -#define net_device_stats enet_statistics -#define NETSTATS_VER2 -#endif -#if LINUX_VERSION_CODE < 0x20159 -#define DEV_FREE_SKB(skb) dev_kfree_skb(skb, FREE_WRITE); -#else /* Grrr, unneeded incompatible change. */ -#define DEV_FREE_SKB(skb) dev_kfree_skb(skb); -#endif - -/* The I/O extent. */ -#define EPIC_TOTAL_SIZE 0x100 - -static int epic_debug = 1; +MODULE_PARM(rx_copybreak, "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(multicast_filter_limit, "i"); +MODULE_PARM_DESC(debug, "Driver message level (0-31)"); +MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex.\n" +"Values are 0x10/0x20/0x100/0x200."); +MODULE_PARM_DESC(max_interrupt_work, + "Driver maximum events handled per interrupt"); +MODULE_PARM_DESC(full_duplex, "Non-zero to set forced full duplex."); +MODULE_PARM_DESC(rx_copybreak, + "Breakpoint in bytes for copy-only-tiny-frames"); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast addresses before switching to Rx-all-multicast"); /* Theory of Operation I. Board Compatibility -This device driver is designed for the SMC "EPCI/100", the SMC +This device driver is designed for the SMC "EPIC/100", the SMC single-chip Ethernet controllers for PCI. This chip is used on the SMC EtherPower II boards. - II. Board-specific settings PCI bus devices are configured by the system at boot time, so no jumpers @@ -144,35 +186,61 @@ IIIa. Ring buffers IVb. References -http://www.smc.com/components/catalog/smc83c170.html -http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html -http://www.national.com/pf/DP/DP83840.html +http://www.smsc.com/main/datasheets/83c171.pdf +http://www.smsc.com/main/datasheets/83c175.pdf +http://scyld.com/expert/NWay.html +http://www.national.com/pf/DP/DP83840A.html IVc. Errata */ -/* The rest of these values should never change. */ +static void *epic_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +static int epic_pwr_event(void *dev_instance, int event); -static struct device *epic_probe1(int pci_bus, int pci_devfn, - struct device *dev, int card_idx); +enum chip_capability_flags { MII_PWRDWN=1, TYPE2_INTR=2, NO_MII=4 }; -enum pci_flags_bit { - PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4, - PCI_ADDR0=0x10<<0, PCI_ADDR1=0x10<<1, PCI_ADDR2=0x10<<2, PCI_ADDR3=0x10<<3, -}; -struct chip_info { - const char *name; - u16 vendor_id, device_id, device_id_mask, pci_flags; - int io_size, min_latency; - struct device *(*probe1)(int pci_bus, int pci_devfn, struct device *dev, - int chip_idx); -} chip_tbl[] = { - {"SMSC EPIC/100", 0x10B8, 0x0005, 0x7fff, - PCI_USES_IO|PCI_USES_MASTER|PCI_ADDR0, EPIC_TOTAL_SIZE, 32, epic_probe1}, +#define EPIC_TOTAL_SIZE 0x100 +#ifdef USE_IO_OPS +#define EPIC_IOTYPE PCI_USES_MASTER|PCI_USES_IO|PCI_ADDR0 +#else +#define EPIC_IOTYPE PCI_USES_MASTER|PCI_USES_MEM|PCI_ADDR1 +#endif + +static struct pci_id_info pci_id_tbl[] = { + {"SMSC EPIC 83c172", {0x000510B8, 0xffffffff, 0,0, 9,0xff}, + EPIC_IOTYPE, EPIC_TOTAL_SIZE, TYPE2_INTR | MII_PWRDWN, }, + {"SMSC EPIC 83c171", {0x000510B8, 0xffffffff, 0,0, 6,0xff}, + EPIC_IOTYPE, EPIC_TOTAL_SIZE, TYPE2_INTR | MII_PWRDWN, }, + {"SMSC EPIC/100 83c170", {0x000510B8, 0xffffffff, 0x0ab41092, 0xffffffff}, + EPIC_IOTYPE, EPIC_TOTAL_SIZE, TYPE2_INTR | NO_MII | MII_PWRDWN, }, + {"SMSC EPIC/100 83c170", {0x000510B8, 0xffffffff}, + EPIC_IOTYPE, EPIC_TOTAL_SIZE, TYPE2_INTR, }, + {"SMSC EPIC/C 83c175", {0x000610B8, 0xffffffff}, + EPIC_IOTYPE, EPIC_TOTAL_SIZE, TYPE2_INTR | MII_PWRDWN, }, {0,}, }; +struct drv_id_info epic_drv_id = { + "epic100", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, + epic_probe1, epic_pwr_event }; + +#ifndef USE_IO_OPS +#undef inb +#undef inw +#undef inl +#undef outb +#undef outw +#undef outl +#define inb readb +#define inw readw +#define inl readl +#define outb writeb +#define outw writew +#define outl writel +#endif + /* Offsets to registers, using the (ugh) SMC names. */ enum epic_registers { COMMAND=0, INTSTAT=4, INTMASK=8, GENCTL=0x0C, NVCTL=0x10, EECTL=0x14, @@ -187,38 +255,40 @@ enum epic_registers { /* Interrupt register bits, using my own meaningful names. */ enum IntrStatus { - TxIdle=0x40000, RxIdle=0x20000, IntrSummary=0x010000, - PCIBusErr170=0x7000, PCIBusErr175=0x1000, PhyEvent175=0x8000, - RxStarted=0x0800, RxEarlyWarn=0x0400, CntFull=0x0200, TxUnderrun=0x0100, - TxEmpty=0x0080, TxDone=0x0020, RxError=0x0010, - RxOverflow=0x0008, RxFull=0x0004, RxHeader=0x0002, RxDone=0x0001, + TxIdle=0x40000, RxIdle=0x20000, IntrSummary=0x010000, + PCIBusErr170=0x7000, PCIBusErr175=0x1000, PhyEvent175=0x8000, + RxStarted=0x0800, RxEarlyWarn=0x0400, CntFull=0x0200, TxUnderrun=0x0100, + TxEmpty=0x0080, TxDone=0x0020, RxError=0x0010, + RxOverflow=0x0008, RxFull=0x0004, RxHeader=0x0002, RxDone=0x0001, +}; +enum CommandBits { + StopRx=1, StartRx=2, TxQueued=4, RxQueued=8, + StopTxDMA=0x20, StopRxDMA=0x40, RestartTx=0x80, }; /* The EPIC100 Rx and Tx buffer descriptors. */ struct epic_tx_desc { - s16 status; - u16 txlength; + u32 txstatus; u32 bufaddr; - u16 buflength; - u16 control; + u32 buflength; u32 next; }; struct epic_rx_desc { - s16 status; - u16 rxlength; + u32 rxstatus; u32 bufaddr; u32 buflength; u32 next; }; -struct epic_private { - char devname[8]; /* Used only for kernel debugging. */ - const char *product_name; - struct device *next_module; +enum desc_status_bits { + DescOwn=0x8000, +}; - /* Rx and Rx rings here so that they remain paragraph aligned. */ +#define PRIV_ALIGN 15 /* Required alignment mask */ +struct epic_private { + /* Tx and Rx rings first so that they remain paragraph aligned. */ struct epic_rx_desc rx_ring[RX_RING_SIZE]; struct epic_tx_desc tx_ring[TX_RING_SIZE]; /* The saved address of a sent-in-place packet/buffer, for skfree(). */ @@ -226,168 +296,80 @@ struct epic_private { /* The addresses of receive-in-place skbuffs. */ struct sk_buff* rx_skbuff[RX_RING_SIZE]; + struct net_device *next_module; + void *priv_addr; /* Unaligned address for kfree */ + /* Ring pointers. */ - unsigned int cur_rx, cur_tx; /* The next free ring entry */ - unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */ + spinlock_t lock; /* Group with Tx control cache line. */ + unsigned int cur_tx, dirty_tx; + struct descriptor *last_tx_desc; + + unsigned int cur_rx, dirty_rx; + unsigned int rx_buf_sz; /* Based on MTU+slack. */ + struct descriptor *last_rx_desc; + long last_rx_time; /* Last Rx, in jiffies. */ + int rx_copybreak; - u8 pci_bus, pci_dev_fn; /* PCI bus location. */ - u16 chip_id; + int msg_level; + int max_interrupt_work; + struct pci_dev *pci_dev; /* PCI bus location. */ + int chip_id, chip_flags; struct net_device_stats stats; struct timer_list timer; /* Media selection timer. */ + int tx_threshold; + int genctl; /* Including Rx threshold. */ + u32 cur_rx_mode; unsigned char mc_filter[8]; + int multicast_filter_limit; + signed char phys[4]; /* MII device addresses. */ + u16 mii_bmcr; /* MII control register */ + u16 advertising; /* NWay media advertisement */ + int mii_phy_cnt; unsigned int tx_full:1; /* The Tx queue is full. */ unsigned int full_duplex:1; /* Current duplex setting. */ - unsigned int force_fd:1; /* Full-duplex operation requested. */ - unsigned int default_port:4; /* Last dev->if_port value. */ + unsigned int duplex_lock:1; /* Duplex forced by the user. */ + unsigned int default_port; /* Last dev->if_port value. */ unsigned int media2:4; /* Secondary monitored media port. */ unsigned int medialock:1; /* Don't sense media type. */ unsigned int mediasense:1; /* Media sensing in progress. */ - int pad0, pad1; /* Used for 8-byte alignment */ }; -/* Used to pass the full-duplex flag, etc. */ -#define MAX_UNITS 8 -static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; -static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; - -static int epic_open(struct device *dev); +static int epic_open(struct net_device *dev); static int read_eeprom(long ioaddr, int location); -static int mdio_read(long ioaddr, int phy_id, int location); -static void mdio_write(long ioaddr, int phy_id, int location, int value); -static void epic_restart(struct device *dev); +static int mdio_read(struct net_device *dev, int phy_id, int location); +static void mdio_write(struct net_device *dev, int phy_id, int loc, int val); +static void epic_start(struct net_device *dev, int restart); +static void check_media(struct net_device *dev); static void epic_timer(unsigned long data); -static void epic_tx_timeout(struct device *dev); -static void epic_init_ring(struct device *dev); -static int epic_start_xmit(struct sk_buff *skb, struct device *dev); -static int epic_rx(struct device *dev); +static void epic_tx_timeout(struct net_device *dev); +static void epic_init_ring(struct net_device *dev); +static int epic_start_xmit(struct sk_buff *skb, struct net_device *dev); +static int epic_rx(struct net_device *dev); static void epic_interrupt(int irq, void *dev_instance, struct pt_regs *regs); -static int mii_ioctl(struct device *dev, struct ifreq *rq, int cmd); -static int epic_close(struct device *dev); -static struct net_device_stats *epic_get_stats(struct device *dev); -static void set_rx_mode(struct device *dev); +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +static int epic_close(struct net_device *dev); +static struct net_device_stats *epic_get_stats(struct net_device *dev); +static void set_rx_mode(struct net_device *dev); /* A list of all installed EPIC devices, for removing the driver module. */ -static struct device *root_epic_dev = NULL; - -#ifndef CARDBUS -int epic100_probe(struct device *dev) -{ - int cards_found = 0; - int chip_idx; - u16 pci_command, new_command; - unsigned char pci_bus, pci_device_fn; - -#ifdef PCI_SUPPORT_VER2 - struct pci_dev *pcidev = NULL; - while ((pcidev = pci_find_class(PCI_CLASS_NETWORK_ETHERNET << 8, pcidev)) - != NULL) { - long pci_ioaddr = pcidev->base_address[0] & ~3; - int vendor = pcidev->vendor; - int device = pcidev->device; - - for (chip_idx = 0; chip_tbl[chip_idx].vendor_id; chip_idx++) - if (vendor == chip_tbl[chip_idx].vendor_id - && (device & chip_tbl[chip_idx].device_id_mask) == - chip_tbl[chip_idx].device_id) - break; - if (chip_tbl[chip_idx].vendor_id == 0 /* Compiled out! */ - || check_region(pci_ioaddr, chip_tbl[chip_idx].io_size)) - continue; - pci_bus = pcidev->bus->number; - pci_device_fn = pcidev->devfn; -#else - int pci_index; - - if ( ! pcibios_present()) - return -ENODEV; - - for (pci_index = 0; pci_index < 0xff; pci_index++) { - u16 vendor, device; - u32 pci_ioaddr; - - if (pcibios_find_class (PCI_CLASS_NETWORK_ETHERNET << 8, - pci_index, &pci_bus, &pci_device_fn) - != PCIBIOS_SUCCESSFUL) - break; - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_VENDOR_ID, &vendor); - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_DEVICE_ID, &device); - - for (chip_idx = 0; chip_tbl[chip_idx].vendor_id; chip_idx++) - if (vendor == chip_tbl[chip_idx].vendor_id - && (device & chip_tbl[chip_idx].device_id_mask) == - chip_tbl[chip_idx].device_id) - break; - if (chip_tbl[chip_idx].vendor_id == 0) /* Compiled out! */ - continue; - - pcibios_read_config_dword(pci_bus, pci_device_fn, - PCI_BASE_ADDRESS_0, &pci_ioaddr); - /* Remove I/O space marker in bit 0. */ - pci_ioaddr &= ~3; - - if (check_region(pci_ioaddr, chip_tbl[chip_idx].io_size)) - continue; -#endif - - /* EPIC-specific code: Soft-reset the chip ere setting as master. */ - outl(0x0001, pci_ioaddr + GENCTL); - - /* Activate the card: fix for brain-damaged Win98 BIOSes. */ - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, &pci_command); - new_command = pci_command | PCI_COMMAND_MASTER|PCI_COMMAND_IO; - if (pci_command != new_command) { - printk(KERN_INFO " The PCI BIOS has not enabled Ethernet" - " device %4.4x-%4.4x." - " Updating PCI command %4.4x->%4.4x.\n", - vendor, device, pci_command, new_command); - pcibios_write_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, new_command); - } - - dev = chip_tbl[chip_idx].probe1(pci_bus, pci_device_fn, - dev, cards_found); - - /* Check the latency timer. */ - if (dev) { - u8 pci_latency; - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, &pci_latency); - if (pci_latency < chip_tbl[chip_idx].min_latency) { - printk(KERN_INFO " PCI latency timer (CFLT) value of %d is " - "unreasonably low, setting to %d.\n", pci_latency, - chip_tbl[chip_idx].min_latency); - pcibios_write_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, - chip_tbl[chip_idx].min_latency); - } - dev = 0; - cards_found++; - } - } - - return cards_found ? 0 : -ENODEV; -} -#endif /* not CARDBUS */ +static struct net_device *root_epic_dev = NULL; -static struct device *epic_probe1(int bus, int devfn, struct device *dev, - int card_idx) +static void *epic_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int card_idx) { - static int did_version = 0; /* Already printed version info. */ + struct net_device *dev; struct epic_private *ep; + void *priv_mem; int i, option = 0, duplex = 0; - u16 chip_id; - u32 ioaddr; - if (epic_debug > 0 && did_version++ == 0) - printk(KERN_INFO "%s", version); + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; - if (dev && dev->mem_start) { + if (dev->mem_start) { option = dev->mem_start; duplex = (dev->mem_start & 16) ? 1 : 0; } else if (card_idx >= 0 && card_idx < MAX_UNITS) { @@ -397,108 +379,125 @@ static struct device *epic_probe1(int bus, int devfn, struct device *dev, duplex = full_duplex[card_idx]; } - dev = init_etherdev(dev, 0); - - { /* Grrrr, badly consider interface change. */ -#if defined(PCI_SUPPORT_VER2) - struct pci_dev *pdev = pci_find_slot(bus, devfn); - ioaddr = pdev->base_address[0] & ~3; - dev->irq = pdev->irq; - chip_id = pdev->device; -#else - u8 irq; - u32 ioaddr0; - pcibios_read_config_dword(bus, devfn, PCI_BASE_ADDRESS_0, &ioaddr0); - pcibios_read_config_byte(bus, devfn, PCI_INTERRUPT_LINE, &irq); - pcibios_read_config_word(bus, devfn, PCI_DEVICE_ID, &chip_id); - ioaddr = ioaddr0 & ~3; - dev->irq = irq; -#endif - } - dev->base_addr = ioaddr; - printk(KERN_INFO "%s: SMC EPIC/100 (chip ID %4.4x) at %#3x, IRQ %d, ", - dev->name, chip_id, ioaddr, dev->irq); + dev->irq = irq; + printk(KERN_INFO "%s: %s at %#lx, %2.2x:%2.2x IRQ %d, ", + dev->name, pci_id_tbl[chip_idx].name, ioaddr, + pci_bus_number(pdev), pci_devfn(pdev)>>3, dev->irq); /* Bring the chip out of low-power mode. */ outl(0x4200, ioaddr + GENCTL); - /* Magic?! If we don't set this bit the MII interface won't work. */ + /* Magic from SMSC app note 7.15 */ outl(0x0008, ioaddr + TEST1); /* Turn on the MII transceiver. */ outl(0x12, ioaddr + MIICfg); - if (chip_id == 6) + if (pci_id_tbl[chip_idx].drv_flags & NO_MII) outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); outl(0x0200, ioaddr + GENCTL); - /* This could also be read from the EEPROM. */ + if (((1 << debug) - 1) & NETIF_MSG_MISC) { + printk(KERN_DEBUG "%s: EEPROM contents\n", dev->name); + for (i = 0; i < 64; i++) + printk(" %4.4x%s", read_eeprom(ioaddr, i), + i % 16 == 15 ? "\n" : ""); + } + + /* Note: the '175 does not have a serial EEPROM. */ for (i = 0; i < 3; i++) - ((u16 *)dev->dev_addr)[i] = inw(ioaddr + LAN0 + i*4); + ((u16 *)dev->dev_addr)[i] = le16_to_cpu(inw(ioaddr + LAN0 + i*4)); for (i = 0; i < 5; i++) printk("%2.2x:", dev->dev_addr[i]); printk("%2.2x.\n", dev->dev_addr[i]); - if (epic_debug > 1) { - printk(KERN_DEBUG "%s: EEPROM contents\n", dev->name); - for (i = 0; i < 64; i++) - printk(" %4.4x%s", read_eeprom(ioaddr, i), - i % 16 == 15 ? "\n" : ""); - } + /* Make certain elements e.g. descriptor lists are aligned. */ + priv_mem = kmalloc(sizeof(*ep) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; /* We do a request_region() to register /proc/ioports info. */ - request_region(ioaddr, EPIC_TOTAL_SIZE, "SMC EPIC/100"); + request_region(ioaddr, pci_id_tbl[chip_idx].io_size, dev->name); - /* The data structures must be quadword aligned. */ - ep = kmalloc(sizeof(*ep), GFP_KERNEL | GFP_DMA); + dev->priv = ep = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); memset(ep, 0, sizeof(*ep)); - dev->priv = ep; + ep->priv_addr = priv_mem; ep->next_module = root_epic_dev; root_epic_dev = dev; - ep->pci_bus = bus; - ep->pci_dev_fn = devfn; - ep->chip_id = chip_id; + ep->pci_dev = pdev; + ep->chip_id = chip_idx; + ep->chip_flags = pci_id_tbl[chip_idx].drv_flags; + ep->msg_level = (1 << debug) - 1; + ep->rx_copybreak = rx_copybreak; + ep->max_interrupt_work = max_interrupt_work; + ep->multicast_filter_limit = multicast_filter_limit; + + /* The lower four bits are non-TP media types. */ + if (option > 0) { + if (option & 0x220) + ep->duplex_lock = ep->full_duplex = 1; + ep->default_port = option & 0xFFFF; + ep->medialock = 1; + } + if (duplex) { + ep->duplex_lock = ep->full_duplex = 1; + printk(KERN_INFO "%s: Forced full duplex operation requested.\n", + dev->name); + } + dev->if_port = ep->default_port; /* Find the connected MII xcvrs. Doing this in open() would allow detecting external xcvrs later, but - takes too much time. */ + takes much time and no cards have external MII. */ { - int phy, phy_idx; - for (phy = 1, phy_idx = 0; phy < 32 && phy_idx < sizeof(ep->phys); - phy++) { - int mii_status = mdio_read(ioaddr, phy, 1); - if (mii_status != 0xffff && mii_status != 0x0000) { + int phy, phy_idx = 0; + for (phy = 1; phy < 32 && phy_idx < sizeof(ep->phys); phy++) { + int mii_status = mdio_read(dev, phy, 1); + if (mii_status != 0xffff && mii_status != 0x0000) { ep->phys[phy_idx++] = phy; - printk(KERN_INFO "%s: MII transceiver #%d control " - "%4.4x status %4.4x.\n" - KERN_INFO "%s: Autonegotiation advertising %4.4x " - "link partner %4.4x.\n", - dev->name, phy, mdio_read(ioaddr, phy, 0), mii_status, - dev->name, mdio_read(ioaddr, phy, 4), - mdio_read(ioaddr, phy, 5)); + printk(KERN_INFO "%s: Located MII transceiver #%d control " + "%4.4x status %4.4x.\n", + dev->name, phy, mdio_read(dev, phy, 0), mii_status); } } - if (phy_idx == 0) { - printk(KERN_WARNING "%s: ***WARNING***: No MII transceiver found!\n", - dev->name); - /* Use the known PHY address of the EPII. */ - ep->phys[0] = 3; + ep->mii_phy_cnt = phy_idx; + } + if (ep->mii_phy_cnt == 0 && ! (ep->chip_flags & NO_MII)) { + printk(KERN_WARNING "%s: ***WARNING***: No MII transceiver found!\n", + dev->name); + /* Use the known PHY address of the EPII. */ + ep->phys[0] = 3; + } + + if (ep->mii_phy_cnt) { + int phy = ep->phys[0]; + int xcvr = ep->default_port & 0x330; + if (xcvr) { + printk(KERN_INFO " Forcing %dMbs %s-duplex operation.\n", + (xcvr & 0x300 ? 100 : 10), + (xcvr & 0x220 ? "full" : "half")); + ep->mii_bmcr = xcvr & 0x300 ? 0x2000 : 0; /* 10/100mbps? */ + ep->mii_bmcr |= xcvr & 0x220 ? 0x0100 : 0; /* duplex */ + mdio_write(dev, phy, 0, ep->mii_bmcr); + } else { + ep->mii_bmcr = 0x3000; + ep->advertising = mdio_read(dev, phy, 4); + printk(KERN_INFO "%s: Autonegotiation advertising %4.4x link " + "partner %4.4x.\n", + dev->name, ep->advertising, mdio_read(dev, phy, 5)); } } +#if EPIC_POWER_SAVE /* Turn off the MII xcvr (175 only!), leave the chip in low-power mode. */ - if (ep->chip_id == 6) + if (ep->chip_flags & MII_PWRDWN) outl(inl(ioaddr + NVCTL) & ~0x483C, ioaddr + NVCTL); +#endif outl(0x0008, ioaddr + GENCTL); - /* The lower four bits are the media type. */ - ep->force_fd = duplex; - ep->default_port = option; - if (ep->default_port) - ep->medialock = 1; - /* The Epic-specific entries in the device structure. */ dev->open = &epic_open; dev->hard_start_xmit = &epic_start_xmit; @@ -522,14 +521,10 @@ static struct device *epic_probe1(int bus, int devfn, struct device *dev, #define EE_ENB (0x0001 | EE_CS) /* Delay between EEPROM clock transitions. - No extra delay is needed with 33Mhz PCI, but 66Mhz is untested. + This serves to flush the operation to the PCI bus. */ -#ifdef _LINUX_DELAY_H -#define eeprom_delay(nanosec) udelay(1) -#else -#define eeprom_delay(nanosec) do { ; } while (0) -#endif +#define eeprom_delay() inl(ee_addr) /* The EEPROM commands include the alway-set leading bit. */ #define EE_WRITE_CMD (5 << 6) @@ -543,9 +538,8 @@ static int read_eeprom(long ioaddr, int location) int retval = 0; long ee_addr = ioaddr + EECTL; int read_cmd = location | - (inl(ee_addr) & 0x40) ? EE_READ64_CMD : EE_READ256_CMD; + (inl(ee_addr) & 0x40 ? EE_READ64_CMD : EE_READ256_CMD); - printk("EEctrl is %x.\n", inl(ee_addr)); outl(EE_ENB & ~EE_CS, ee_addr); outl(EE_ENB, ee_addr); @@ -553,18 +547,18 @@ static int read_eeprom(long ioaddr, int location) for (i = 12; i >= 0; i--) { short dataval = (read_cmd & (1 << i)) ? EE_WRITE_1 : EE_WRITE_0; outl(EE_ENB | dataval, ee_addr); - eeprom_delay(100); + eeprom_delay(); outl(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr); - eeprom_delay(150); + eeprom_delay(); } outl(EE_ENB, ee_addr); for (i = 16; i > 0; i--) { outl(EE_ENB | EE_SHIFT_CLK, ee_addr); - eeprom_delay(100); + eeprom_delay(); retval = (retval << 1) | ((inl(ee_addr) & EE_DATA_READ) ? 1 : 0); outl(EE_ENB, ee_addr); - eeprom_delay(100); + eeprom_delay(); } /* Terminate the EEPROM access. */ @@ -574,24 +568,34 @@ static int read_eeprom(long ioaddr, int location) #define MII_READOP 1 #define MII_WRITEOP 2 -static int mdio_read(long ioaddr, int phy_id, int location) +static int mdio_read(struct net_device *dev, int phy_id, int location) { + long ioaddr = dev->base_addr; + int read_cmd = (phy_id << 9) | (location << 4) | MII_READOP; int i; - outl((phy_id << 9) | (location << 4) | MII_READOP, ioaddr + MIICtrl); - /* Typical operation takes < 50 ticks. */ - for (i = 4000; i > 0; i--) - if ((inl(ioaddr + MIICtrl) & MII_READOP) == 0) + outl(read_cmd, ioaddr + MIICtrl); + /* Typical operation takes 25 loops. */ + for (i = 400; i > 0; i--) + if ((inl(ioaddr + MIICtrl) & MII_READOP) == 0) { + /* Work around read failure bug. */ + if (phy_id == 1 && location < 6 + && inw(ioaddr + MIIData) == 0xffff) { + outl(read_cmd, ioaddr + MIICtrl); + continue; + } return inw(ioaddr + MIIData); + } return 0xffff; } -static void mdio_write(long ioaddr, int phy_id, int location, int value) +static void mdio_write(struct net_device *dev, int phy_id, int loc, int value) { + long ioaddr = dev->base_addr; int i; outw(value, ioaddr + MIIData); - outl((phy_id << 9) | (location << 4) | MII_WRITEOP, ioaddr + MIICtrl); + outl((phy_id << 9) | (loc << 4) | MII_WRITEOP, ioaddr + MIICtrl); for (i = 10000; i > 0; i--) { if ((inl(ioaddr + MIICtrl) & MII_WRITEOP) == 0) break; @@ -600,89 +604,25 @@ static void mdio_write(long ioaddr, int phy_id, int location, int value) } -static int -epic_open(struct device *dev) +static int epic_open(struct net_device *dev) { struct epic_private *ep = (struct epic_private *)dev->priv; - long ioaddr = dev->base_addr; - int i; - int mii_reg5; - ep->full_duplex = ep->force_fd; - - /* Soft reset the chip. */ - outl(0x4001, ioaddr + GENCTL); - - if (request_irq(dev->irq, &epic_interrupt, SA_SHIRQ, "SMC EPIC/100", dev)) - return -EAGAIN; MOD_INC_USE_COUNT; - epic_init_ring(dev); - - outl(0x4000, ioaddr + GENCTL); - /* This next magic! line by Ken Yamaguchi.. ?? */ - outl(0x0008, ioaddr + TEST1); - - /* Pull the chip out of low-power mode, enable interrupts, and set for - PCI read multiple. The MIIcfg setting and strange write order are - required by the details of which bits are reset and the transceiver - wiring on the Ositech CardBus card. - */ - outl(0x12, ioaddr + MIICfg); - if (ep->chip_id == 6) - outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); - -#if defined(__powerpc__) || defined(__sparc__) /* Big endian */ - outl(0x0432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); -#else - outl(0x0412 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); -#endif - - for (i = 0; i < 3; i++) - outl(((u16*)dev->dev_addr)[i], ioaddr + LAN0 + i*4); - - outl(TX_FIFO_THRESH, ioaddr + TxThresh); - - mii_reg5 = mdio_read(ioaddr, ep->phys[0], 5); - if (mii_reg5 != 0xffff) { - if ((mii_reg5 & 0x0100) || (mii_reg5 & 0x01C0) == 0x0040) - ep->full_duplex = 1; - else if (! (mii_reg5 & 0x4000)) - mdio_write(ioaddr, ep->phys[0], 0, 0x1200); - if (epic_debug > 1) - printk(KERN_INFO "%s: Setting %s-duplex based on MII xcvr %d" - " register read of %4.4x.\n", dev->name, - ep->full_duplex ? "full" : "half", ep->phys[0], mii_reg5); + if (request_irq(dev->irq, &epic_interrupt, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; + return -EAGAIN; } - outl(ep->full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl); - outl(virt_to_bus(ep->rx_ring), ioaddr + PRxCDAR); - outl(virt_to_bus(ep->tx_ring), ioaddr + PTxCDAR); - - /* Start the chip's Rx process. */ - set_rx_mode(dev); - outl(0x000A, ioaddr + COMMAND); - - dev->tbusy = 0; - dev->interrupt = 0; - dev->start = 1; - - /* Enable interrupts by setting the interrupt mask. */ - outl((ep->chip_id == 6 ? PCIBusErr175 : PCIBusErr170) - | CntFull | TxUnderrun | TxDone - | RxError | RxOverflow | RxFull | RxHeader | RxDone, - ioaddr + INTMASK); - - if (epic_debug > 1) - printk(KERN_DEBUG "%s: epic_open() ioaddr %lx IRQ %d status %4.4x " - "%s-duplex.\n", - dev->name, ioaddr, dev->irq, inl(ioaddr + GENCTL), - ep->full_duplex ? "full" : "half"); + epic_init_ring(dev); + check_media(dev); + epic_start(dev, 0); /* Set the timer to switch to check for link beat and perhaps switch to an alternate media type. */ init_timer(&ep->timer); - ep->timer.expires = RUN_AT((24*HZ)/10); /* 2.4 sec. */ + ep->timer.expires = jiffies + 3*HZ; ep->timer.data = (unsigned long)dev; ep->timer.function = &epic_timer; /* timer handler */ add_timer(&ep->timer); @@ -692,7 +632,7 @@ epic_open(struct device *dev) /* Reset the chip to recover from a PCI transaction error. This may occur at interrupt time. */ -static void epic_pause(struct device *dev) +static void epic_pause(struct net_device *dev) { long ioaddr = dev->base_addr; struct epic_private *ep = (struct epic_private *)dev->priv; @@ -700,7 +640,7 @@ static void epic_pause(struct device *dev) /* Disable interrupts by clearing the interrupt mask. */ outl(0x00000000, ioaddr + INTMASK); /* Stop the chip's Tx and Rx DMA processes. */ - outw(0x0061, ioaddr + COMMAND); + outw(StopRx | StopTxDMA | StopRxDMA, ioaddr + COMMAND); /* Update the error counts. */ if (inw(ioaddr + COMMAND) != 0xffff) { @@ -713,214 +653,268 @@ static void epic_pause(struct device *dev) epic_rx(dev); } -static void epic_restart(struct device *dev) +static void epic_start(struct net_device *dev, int restart) { long ioaddr = dev->base_addr; struct epic_private *ep = (struct epic_private *)dev->priv; int i; - printk(KERN_DEBUG "%s: Restarting the EPIC chip, Rx %d/%d Tx %d/%d.\n", - dev->name, ep->cur_rx, ep->dirty_rx, ep->dirty_tx, ep->cur_tx); - /* Soft reset the chip. */ - outl(0x0001, ioaddr + GENCTL); + if (restart) { + /* Soft reset the chip. */ + outl(0x4001, ioaddr + GENCTL); + printk(KERN_DEBUG "%s: Restarting the EPIC chip, Rx %d/%d Tx %d/%d.\n", + dev->name, ep->cur_rx, ep->dirty_rx, ep->dirty_tx, ep->cur_tx); + udelay(1); - udelay(1); - /* Duplicate code from epic_open(). */ - outl(0x0008, ioaddr + TEST1); + /* This magic is documented in SMSC app note 7.15 */ + for (i = 16; i > 0; i--) + outl(0x0008, ioaddr + TEST1); + } -#if defined(__powerpc__) /* Big endian */ - outl(0x0432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); +#if defined(__powerpc__) || defined(__sparc__) || defined(__BIG_ENDIAN) + ep->genctl = 0x0432 | (RX_FIFO_THRESH<<8); +#elif defined(__LITTLE_ENDIAN) || defined(__i386__) + ep->genctl = 0x0412 | (RX_FIFO_THRESH<<8); #else - outl(0x0412 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); +#error The byte order of this architecture is not defined. #endif - outl(0x12, ioaddr + MIICfg); - if (ep->chip_id == 6) + + /* Power and reset the PHY. */ + if (ep->chip_flags & MII_PWRDWN) outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); + if (restart) { + outl(ep->genctl | 0x4000, ioaddr + GENCTL); + inl(ioaddr + GENCTL); + } + outl(ep->genctl, ioaddr + GENCTL); + + if (dev->if_port == 2 || dev->if_port == 5) { /* 10base2 or AUI */ + outl(0x13, ioaddr + MIICfg); + printk(KERN_INFO "%s: Disabling MII PHY to use 10base2/AUI.\n", + dev->name); + mdio_write(dev, ep->phys[0], 0, 0x0C00); + } else { + outl(0x12, ioaddr + MIICfg); + mdio_write(dev, ep->phys[0], 0, ep->advertising); + mdio_write(dev, ep->phys[0], 0, ep->mii_bmcr); + check_media(dev); + } for (i = 0; i < 3; i++) - outl(((u16*)dev->dev_addr)[i], ioaddr + LAN0 + i*4); + outl(cpu_to_le16(((u16*)dev->dev_addr)[i]), ioaddr + LAN0 + i*4); - outl(TX_FIFO_THRESH, ioaddr + TxThresh); + ep->tx_threshold = TX_FIFO_THRESH; + outl(ep->tx_threshold, ioaddr + TxThresh); outl(ep->full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl); - outl(virt_to_bus(&ep->rx_ring[ep->cur_rx%RX_RING_SIZE]), ioaddr + PRxCDAR); - outl(virt_to_bus(&ep->tx_ring[ep->dirty_tx%TX_RING_SIZE]), + outl(virt_to_bus(&ep->rx_ring[ep->cur_rx % RX_RING_SIZE]), + ioaddr + PRxCDAR); + outl(virt_to_bus(&ep->tx_ring[ep->dirty_tx % TX_RING_SIZE]), ioaddr + PTxCDAR); /* Start the chip's Rx process. */ set_rx_mode(dev); - outl(0x000A, ioaddr + COMMAND); + outl(StartRx | RxQueued, ioaddr + COMMAND); + + if ( ! restart) + netif_start_tx_queue(dev); /* Enable interrupts by setting the interrupt mask. */ - outl((ep->chip_id == 6 ? PCIBusErr175 : PCIBusErr170) - | CntFull | TxUnderrun | TxDone + outl((ep->chip_flags & TYPE2_INTR ? PCIBusErr175 : PCIBusErr170) + | CntFull | TxUnderrun | TxDone | TxEmpty | RxError | RxOverflow | RxFull | RxHeader | RxDone, ioaddr + INTMASK); - printk(KERN_DEBUG "%s: epic_restart() done, cmd status %4.4x, ctl %4.4x" - " interrupt %4.4x.\n", - dev->name, inl(ioaddr + COMMAND), inl(ioaddr + GENCTL), - inl(ioaddr + INTSTAT)); + if (ep->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: epic_start() done, cmd status %4.4x, " + "ctl %4.4x interrupt %4.4x.\n", + dev->name, (int)inl(ioaddr + COMMAND), + (int)inl(ioaddr + GENCTL), (int)inl(ioaddr + INTSTAT)); return; } +static void check_media(struct net_device *dev) +{ + struct epic_private *ep = (struct epic_private *)dev->priv; + long ioaddr = dev->base_addr; + int mii_reg5 = ep->mii_phy_cnt ? mdio_read(dev, ep->phys[0], 5) : 0; + int negotiated = mii_reg5 & ep->advertising; + int duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040; + + if (ep->duplex_lock) + return; + if (mii_reg5 == 0xffff) /* Bogus read */ + return; + if (ep->full_duplex != duplex) { + ep->full_duplex = duplex; + printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d link" + " partner capability of %4.4x.\n", dev->name, + ep->full_duplex ? "full" : "half", ep->phys[0], mii_reg5); + outl(ep->full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl); + } +} + static void epic_timer(unsigned long data) { - struct device *dev = (struct device *)data; + struct net_device *dev = (struct net_device *)data; struct epic_private *ep = (struct epic_private *)dev->priv; long ioaddr = dev->base_addr; - int next_tick = 0; - int mii_reg5 = mdio_read(ioaddr, ep->phys[0], 5); + int next_tick = 5*HZ; - if (epic_debug > 3) { - printk(KERN_DEBUG "%s: Media selection tick, Tx status %8.8x.\n", - dev->name, inl(ioaddr + TxSTAT)); + if (ep->msg_level & NETIF_MSG_TIMER) { + printk(KERN_DEBUG "%s: Media monitor tick, Tx status %8.8x.\n", + dev->name, (int)inl(ioaddr + TxSTAT)); printk(KERN_DEBUG "%s: Other registers are IntMask %4.4x " "IntStatus %4.4x RxStatus %4.4x.\n", - dev->name, inl(ioaddr + INTMASK), inl(ioaddr + INTSTAT), - inl(ioaddr + RxSTAT)); - } - if (! ep->force_fd && mii_reg5 != 0xffff) { - int duplex = (mii_reg5&0x0100) || (mii_reg5 & 0x01C0) == 0x0040; - if (ep->full_duplex != duplex) { - ep->full_duplex = duplex; - printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d link" - " partner capability of %4.4x.\n", dev->name, - ep->full_duplex ? "full" : "half", ep->phys[0], mii_reg5); - outl(ep->full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl); - } - next_tick = 60*HZ; + dev->name, (int)inl(ioaddr + INTMASK), + (int)inl(ioaddr + INTSTAT), (int)inl(ioaddr + RxSTAT)); } - if (next_tick) { - ep->timer.expires = RUN_AT(next_tick); - add_timer(&ep->timer); + if (ep->cur_tx - ep->dirty_tx > 1 && + jiffies - dev->trans_start > TX_TIMEOUT) { + printk(KERN_WARNING "%s: Tx hung, %d vs. %d.\n", + dev->name, ep->cur_tx, ep->dirty_tx); + epic_tx_timeout(dev); } + + check_media(dev); + + ep->timer.expires = jiffies + next_tick; + add_timer(&ep->timer); } -static void epic_tx_timeout(struct device *dev) +static void epic_tx_timeout(struct net_device *dev) { struct epic_private *ep = (struct epic_private *)dev->priv; long ioaddr = dev->base_addr; - - if (epic_debug > 0) { - printk(KERN_WARNING "%s: Transmit timeout using MII device, " - "Tx status %4.4x.\n", - dev->name, inw(ioaddr + TxSTAT)); - if (epic_debug > 1) { - printk(KERN_DEBUG "%s: Tx indices: dirty_tx %d, cur_tx %d.\n", - dev->name, ep->dirty_tx, ep->cur_tx); - } - } - if (inw(ioaddr + TxSTAT) & 0x10) { /* Tx FIFO underflow. */ + int tx_status = inw(ioaddr + TxSTAT); + + printk(KERN_WARNING "%s: EPIC transmit timeout, Tx status %4.4x.\n", + dev->name, tx_status); + if (ep->msg_level & NETIF_MSG_TX_ERR) + printk(KERN_DEBUG "%s: Tx indices: dirty_tx %d, cur_tx %d.\n", + dev->name, ep->dirty_tx, ep->cur_tx); + if (tx_status & 0x10) { /* Tx FIFO underflow. */ ep->stats.tx_fifo_errors++; - /* Restart the transmit process. */ - outl(0x0080, ioaddr + COMMAND); + outl(RestartTx, ioaddr + COMMAND); + } else { + epic_start(dev, 1); + outl(TxQueued, dev->base_addr + COMMAND); } - /* Perhaps stop and restart the chip's Tx processes . */ - /* Trigger a transmit demand. */ - outl(0x0004, dev->base_addr + COMMAND); - dev->trans_start = jiffies; ep->stats.tx_errors++; return; } /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ -static void -epic_init_ring(struct device *dev) +static void epic_init_ring(struct net_device *dev) { struct epic_private *ep = (struct epic_private *)dev->priv; int i; ep->tx_full = 0; - ep->cur_rx = ep->cur_tx = 0; - ep->dirty_rx = ep->dirty_tx = 0; + ep->lock = (spinlock_t) SPIN_LOCK_UNLOCKED; + ep->dirty_tx = ep->cur_tx = 0; + ep->cur_rx = ep->dirty_rx = 0; + ep->last_rx_time = jiffies; + ep->rx_buf_sz = (dev->mtu <= 1522 ? PKT_BUF_SZ : dev->mtu + 14); + /* Initialize all Rx descriptors. */ for (i = 0; i < RX_RING_SIZE; i++) { - ep->rx_ring[i].status = 0x8000; /* Owned by Epic chip */ - ep->rx_ring[i].buflength = PKT_BUF_SZ; - { - /* Note the receive buffer must be longword aligned. - dev_alloc_skb() provides 16 byte alignment. But do *not* - use skb_reserve() to align the IP header! */ - struct sk_buff *skb; - skb = dev_alloc_skb(PKT_BUF_SZ); - ep->rx_skbuff[i] = skb; - if (skb == NULL) - break; /* Bad news! */ - skb->dev = dev; /* Mark as being used by this device. */ - skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ - ep->rx_ring[i].bufaddr = virt_to_bus(skb->tail); - } + ep->rx_ring[i].rxstatus = 0; + ep->rx_ring[i].buflength = ep->rx_buf_sz; ep->rx_ring[i].next = virt_to_bus(&ep->rx_ring[i+1]); + ep->rx_skbuff[i] = 0; } /* Mark the last entry as wrapping the ring. */ ep->rx_ring[i-1].next = virt_to_bus(&ep->rx_ring[0]); + /* Fill in the Rx buffers. Handle allocation failure gracefully. */ + for (i = 0; i < RX_RING_SIZE; i++) { + struct sk_buff *skb = dev_alloc_skb(ep->rx_buf_sz); + ep->rx_skbuff[i] = skb; + if (skb == NULL) + break; + skb->dev = dev; /* Mark as being used by this device. */ + skb_reserve(skb, 2); /* 16 byte align the IP header. */ + ep->rx_ring[i].bufaddr = virt_to_bus(skb->tail); + ep->rx_ring[i].rxstatus = DescOwn; + } + ep->dirty_rx = (unsigned int)(i - RX_RING_SIZE); + /* The Tx buffer descriptor is filled in as needed, but we do need to clear the ownership bit. */ for (i = 0; i < TX_RING_SIZE; i++) { ep->tx_skbuff[i] = 0; - ep->tx_ring[i].status = 0x0000; + ep->tx_ring[i].txstatus = 0x0000; ep->tx_ring[i].next = virt_to_bus(&ep->tx_ring[i+1]); } ep->tx_ring[i-1].next = virt_to_bus(&ep->tx_ring[0]); + return; } -static int -epic_start_xmit(struct sk_buff *skb, struct device *dev) +static int epic_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct epic_private *ep = (struct epic_private *)dev->priv; - int entry; - u32 flag; - - /* Block a timer-based transmit from overlapping. This could better be - done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */ - if (test_and_set_bit(0, (void*)&dev->tbusy) != 0) { - if (jiffies - dev->trans_start < TX_TIMEOUT) - return 1; - epic_tx_timeout(dev); + int entry, free_count; + u32 ctrl_word; + unsigned long flags; + + /* Block a timer-based transmit from overlapping. */ + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + epic_tx_timeout(dev); return 1; } - /* Caution: the write order is important here, set the base address - with the "ownership" bits last. */ + /* Caution: the write order is important here, set the field with the + "ownership" bit last. */ /* Calculate the next Tx descriptor entry. */ + spin_lock_irqsave(&ep->lock, flags); + free_count = ep->cur_tx - ep->dirty_tx; entry = ep->cur_tx % TX_RING_SIZE; ep->tx_skbuff[entry] = skb; - ep->tx_ring[entry].txlength = (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN); ep->tx_ring[entry].bufaddr = virt_to_bus(skb->data); - ep->tx_ring[entry].buflength = skb->len; - - if (ep->cur_tx - ep->dirty_tx < TX_RING_SIZE/2) {/* Typical path */ - flag = 0x10; /* No interrupt */ - clear_bit(0, (void*)&dev->tbusy); - } else if (ep->cur_tx - ep->dirty_tx == TX_RING_SIZE/2) { - flag = 0x14; /* Tx-done intr. */ - clear_bit(0, (void*)&dev->tbusy); - } else if (ep->cur_tx - ep->dirty_tx < TX_RING_SIZE - 2) { - flag = 0x10; /* No Tx-done intr. */ - clear_bit(0, (void*)&dev->tbusy); + + if (free_count < TX_QUEUE_LEN/2) {/* Typical path */ + ctrl_word = 0x100000; /* No interrupt */ + } else if (free_count == TX_QUEUE_LEN/2) { + ctrl_word = 0x140000; /* Tx-done intr. */ + } else if (free_count < TX_QUEUE_LEN - 1) { + ctrl_word = 0x100000; /* No Tx-done intr. */ } else { - /* Leave room for two additional entries. */ - flag = 0x14; /* Tx-done intr. */ - ep->tx_full = 1; + /* Leave room for an additional entry. */ + ctrl_word = 0x140000; /* Tx-done intr. */ + ep->tx_full = 1; } + ep->tx_ring[entry].buflength = ctrl_word | skb->len; + ep->tx_ring[entry].txstatus = + ((skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN) << 16) + | DescOwn; - ep->tx_ring[entry].control = flag; - ep->tx_ring[entry].status = 0x8000; /* Pass ownership to the chip. */ ep->cur_tx++; + if (ep->tx_full) { + /* Check for a just-cleared queue. */ + if (ep->cur_tx - (volatile int)ep->dirty_tx < TX_QUEUE_LEN - 2) { + netif_unpause_tx_queue(dev); + ep->tx_full = 0; + } else + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); + + spin_unlock_irqrestore(&ep->lock, flags); /* Trigger an immediate transmit demand. */ - outl(0x0004, dev->base_addr + COMMAND); + outl(TxQueued, dev->base_addr + COMMAND); dev->trans_start = jiffies; - if (epic_debug > 4) + if (ep->msg_level & NETIF_MSG_TX_QUEUED) printk(KERN_DEBUG "%s: Queued Tx packet size %d to slot %d, " "flag %2.2x Tx status %8.8x.\n", - dev->name, (int)skb->len, entry, flag, - inl(dev->base_addr + TxSTAT)); + dev->name, (int)skb->len, entry, ctrl_word, + (int)inl(dev->base_addr + TxSTAT)); return 0; } @@ -929,59 +923,48 @@ epic_start_xmit(struct sk_buff *skb, struct device *dev) after the Tx thread. */ static void epic_interrupt(int irq, void *dev_instance, struct pt_regs *regs) { - struct device *dev = (struct device *)dev_instance; - struct epic_private *ep; - int status, ioaddr, boguscnt = max_interrupt_work; - - ioaddr = dev->base_addr; - ep = (struct epic_private *)dev->priv; - -#if defined(__i386__) - /* A lock to prevent simultaneous entry bug on Intel SMP machines. */ - if (test_and_set_bit(0, (void*)&dev->interrupt)) { - printk(KERN_ERR"%s: SMP simultaneous entry of an interrupt handler.\n", - dev->name); - dev->interrupt = 0; /* Avoid halting machine. */ - return; - } -#else - if (dev->interrupt) { - printk(KERN_ERR "%s: Re-entering the interrupt handler.\n", dev->name); - return; - } - dev->interrupt = 1; -#endif + struct net_device *dev = (struct net_device *)dev_instance; + struct epic_private *ep = (struct epic_private *)dev->priv; + long ioaddr = dev->base_addr; + int status, boguscnt = max_interrupt_work; do { status = inl(ioaddr + INTSTAT); /* Acknowledge all of the current interrupt sources ASAP. */ outl(status & 0x00007fff, ioaddr + INTSTAT); - if (epic_debug > 4) - printk("%s: interrupt interrupt=%#8.8x new intstat=%#8.8x.\n", - dev->name, status, inl(ioaddr + INTSTAT)); + if (ep->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Interrupt, status=%#8.8x new " + "intstat=%#8.8x.\n", + dev->name, status, (int)inl(ioaddr + INTSTAT)); if ((status & IntrSummary) == 0) break; - if (status & (RxDone | RxStarted | RxEarlyWarn)) + if (status & (RxDone | RxStarted | RxEarlyWarn | RxOverflow)) epic_rx(dev); if (status & (TxEmpty | TxDone)) { - int dirty_tx; - - for (dirty_tx = ep->dirty_tx; dirty_tx < ep->cur_tx; dirty_tx++) { + unsigned int dirty_tx, cur_tx; + + /* Note: if this lock becomes a problem we can narrow the locked + region at the cost of occasionally grabbing the lock more + times. */ + spin_lock(&ep->lock); + cur_tx = ep->cur_tx; + dirty_tx = ep->dirty_tx; + for (; cur_tx - dirty_tx > 0; dirty_tx++) { int entry = dirty_tx % TX_RING_SIZE; - int txstatus = ep->tx_ring[entry].status; + int txstatus = ep->tx_ring[entry].txstatus; - if (txstatus < 0) + if (txstatus & DescOwn) break; /* It still hasn't been Txed */ if ( ! (txstatus & 0x0001)) { /* There was an major error, log it. */ #ifndef final_version - if (epic_debug > 1) - printk("%s: Transmit error, Tx status %8.8x.\n", + if (ep->msg_level & NETIF_MSG_TX_ERR) + printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n", dev->name, txstatus); #endif ep->stats.tx_errors++; @@ -993,39 +976,44 @@ static void epic_interrupt(int irq, void *dev_instance, struct pt_regs *regs) if (txstatus & 0x1000) ep->stats.collisions16++; #endif } else { + if (ep->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG "%s: Transmit done, Tx status " + "%8.8x.\n", dev->name, txstatus); #ifdef ETHER_STATS if ((txstatus & 0x0002) != 0) ep->stats.tx_deferred++; #endif ep->stats.collisions += (txstatus >> 8) & 15; ep->stats.tx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + ep->stats.tx_bytes += ep->tx_skbuff[entry]->len; +#endif } /* Free the original skb. */ - DEV_FREE_SKB(ep->tx_skbuff[entry]); + dev_free_skb_irq(ep->tx_skbuff[entry]); ep->tx_skbuff[entry] = 0; } #ifndef final_version - if (ep->cur_tx - dirty_tx > TX_RING_SIZE) { - printk("%s: Out-of-sync dirty pointer, %d vs. %d, full=%d.\n", - dev->name, dirty_tx, ep->cur_tx, ep->tx_full); + if (cur_tx - dirty_tx > TX_RING_SIZE) { + printk(KERN_WARNING "%s: Out-of-sync dirty pointer, %d vs. %d, full=%d.\n", + dev->name, dirty_tx, cur_tx, ep->tx_full); dirty_tx += TX_RING_SIZE; } #endif - - if (ep->tx_full && dev->tbusy - && dirty_tx > ep->cur_tx - TX_RING_SIZE + 2) { - /* The ring is no longer full, clear tbusy. */ - ep->tx_full = 0; - clear_bit(0, (void*)&dev->tbusy); - mark_bh(NET_BH); - } - ep->dirty_tx = dirty_tx; + if (ep->tx_full + && cur_tx - dirty_tx < TX_QUEUE_LEN - 4) { + /* The ring is no longer full, allow new TX entries. */ + ep->tx_full = 0; + spin_unlock(&ep->lock); + netif_resume_tx_queue(dev); + } else + spin_unlock(&ep->lock); } /* Check uncommon events all at once. */ - if (status & (CntFull | TxUnderrun | RxOverflow | + if (status & (CntFull | TxUnderrun | RxOverflow | RxFull | PCIBusErr170 | PCIBusErr175)) { if (status == 0xffffffff) /* Chip failed or removed (CardBus). */ break; @@ -1036,60 +1024,65 @@ static void epic_interrupt(int irq, void *dev_instance, struct pt_regs *regs) if (status & TxUnderrun) { /* Tx FIFO underflow. */ ep->stats.tx_fifo_errors++; - outl(1536, ioaddr + TxThresh); + outl(ep->tx_threshold += 128, ioaddr + TxThresh); /* Restart the transmit process. */ - outl(0x0080, ioaddr + COMMAND); + outl(RestartTx, ioaddr + COMMAND); } if (status & RxOverflow) { /* Missed a Rx frame. */ ep->stats.rx_errors++; } + if (status & (RxOverflow | RxFull)) + outw(RxQueued, ioaddr + COMMAND); if (status & PCIBusErr170) { printk(KERN_ERR "%s: PCI Bus Error! EPIC status %4.4x.\n", dev->name, status); epic_pause(dev); - epic_restart(dev); + epic_start(dev, 1); } /* Clear all error sources. */ outl(status & 0x7f18, ioaddr + INTSTAT); } if (--boguscnt < 0) { - printk(KERN_ERR "%s: Too much work at interrupt, " + printk(KERN_WARNING "%s: Too much work at interrupt, " "IntrStatus=0x%8.8x.\n", dev->name, status); /* Clear all interrupt sources. */ outl(0x0001ffff, ioaddr + INTSTAT); + /* Ill-advised: Slowly stop emitting this message. */ + max_interrupt_work++; break; } } while (1); - if (epic_debug > 3) - printk(KERN_DEBUG "%s: exiting interrupt, intr_status=%#4.4x.\n", - dev->name, inl(ioaddr + INTSTAT)); + if (ep->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Exiting interrupt, intr_status=%#4.4x.\n", + dev->name, status); -#if defined(__i386__) - clear_bit(0, (void*)&dev->interrupt); -#else - dev->interrupt = 0; -#endif return; } -static int epic_rx(struct device *dev) +static int epic_rx(struct net_device *dev) { struct epic_private *ep = (struct epic_private *)dev->priv; int entry = ep->cur_rx % RX_RING_SIZE; + int rx_work_limit = ep->dirty_rx + RX_RING_SIZE - ep->cur_rx; int work_done = 0; - if (epic_debug > 4) + if (ep->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG " In epic_rx(), entry %d %8.8x.\n", entry, - ep->rx_ring[entry].status); + ep->rx_ring[entry].rxstatus); /* If we own the next entry, it's a new packet. Send it up. */ - while (ep->rx_ring[entry].status >= 0 && ep->rx_skbuff[entry]) { - int status = ep->rx_ring[entry].status; + while ((ep->rx_ring[entry].rxstatus & DescOwn) == 0) { + int status = ep->rx_ring[entry].rxstatus; - if (epic_debug > 4) + if (ep->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG " epic_rx() status was %8.8x.\n", status); + if (--rx_work_limit < 0) + break; if (status & 0x2006) { + if (ep->msg_level & NETIF_MSG_RX_ERR) + printk(KERN_DEBUG "%s: epic_rx() error status was %8.8x.\n", + dev->name, status); if (status & 0x2000) { printk(KERN_WARNING "%s: Oversized Ethernet frame spanned " "multiple buffers, status %4.4x!\n", dev->name, status); @@ -1100,22 +1093,30 @@ static int epic_rx(struct device *dev) } else { /* Malloc up new buffer, compatible with net-2e. */ /* Omit the four octet CRC from the length. */ - short pkt_len = ep->rx_ring[entry].rxlength - 4; + short pkt_len = (status >> 16) - 4; struct sk_buff *skb; + if (pkt_len > PKT_BUF_SZ - 4) { + printk(KERN_ERR "%s: Oversized Ethernet frame, status %x " + "%d bytes.\n", + dev->name, pkt_len, status); + pkt_len = 1514; + } + if (ep->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d" + ", bogus_cnt %d.\n", pkt_len, rx_work_limit); /* Check if the packet is long enough to accept without copying to a minimally-sized skbuff. */ if (pkt_len < rx_copybreak && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { skb->dev = dev; skb_reserve(skb, 2); /* 16 byte align the IP header */ -#if 1 /* USE_IP_COPYSUM */ - eth_copy_and_sum(skb, bus_to_virt(ep->rx_ring[entry].bufaddr), - pkt_len, 0); +#if 1 /* HAS_IP_COPYSUM */ + eth_copy_and_sum(skb, ep->rx_skbuff[entry]->tail, pkt_len, 0); skb_put(skb, pkt_len); #else - memcpy(skb_put(skb, pkt_len), - bus_to_virt(ep->rx_ring[entry].bufaddr), pkt_len); + memcpy(skb_put(skb, pkt_len), ep->rx_skbuff[entry]->tail, + pkt_len); #endif } else { skb_put(skb = ep->rx_skbuff[entry], pkt_len); @@ -1124,6 +1125,9 @@ static int epic_rx(struct device *dev) skb->protocol = eth_type_trans(skb, dev); netif_rx(skb); ep->stats.rx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + ep->stats.rx_bytes += pkt_len; +#endif } work_done++; entry = (++ep->cur_rx) % RX_RING_SIZE; @@ -1134,7 +1138,7 @@ static int epic_rx(struct device *dev) entry = ep->dirty_rx % RX_RING_SIZE; if (ep->rx_skbuff[entry] == NULL) { struct sk_buff *skb; - skb = ep->rx_skbuff[entry] = dev_alloc_skb(PKT_BUF_SZ); + skb = ep->rx_skbuff[entry] = dev_alloc_skb(ep->rx_buf_sz); if (skb == NULL) break; skb->dev = dev; /* Mark as being used by this device. */ @@ -1142,73 +1146,60 @@ static int epic_rx(struct device *dev) ep->rx_ring[entry].bufaddr = virt_to_bus(skb->tail); work_done++; } - ep->rx_ring[entry].status = 0x8000; + ep->rx_ring[entry].rxstatus = DescOwn; } return work_done; } -static int epic_close(struct device *dev) +static int epic_close(struct net_device *dev) { long ioaddr = dev->base_addr; struct epic_private *ep = (struct epic_private *)dev->priv; int i; - dev->start = 0; - dev->tbusy = 1; - - if (epic_debug > 1) - printk(KERN_DEBUG "%s: Shutting down ethercard, status was %2.2x.\n", - dev->name, inl(ioaddr + INTSTAT)); - - /* Disable interrupts by clearing the interrupt mask. */ - outl(0x00000000, ioaddr + INTMASK); - /* Stop the chip's Tx and Rx DMA processes. */ - outw(0x0061, ioaddr + COMMAND); + netif_stop_tx_queue(dev); - /* Update the error counts. */ - ep->stats.rx_missed_errors += inb(ioaddr + MPCNT); - ep->stats.rx_frame_errors += inb(ioaddr + ALICNT); - ep->stats.rx_crc_errors += inb(ioaddr + CRCCNT); + if (ep->msg_level & NETIF_MSG_IFDOWN) + printk(KERN_DEBUG "%s: Shutting down ethercard, status was %8.8x.\n", + dev->name, (int)inl(ioaddr + INTSTAT)); + epic_pause(dev); del_timer(&ep->timer); - free_irq(dev->irq, dev); /* Free all the skbuffs in the Rx queue. */ for (i = 0; i < RX_RING_SIZE; i++) { struct sk_buff *skb = ep->rx_skbuff[i]; ep->rx_skbuff[i] = 0; - ep->rx_ring[i].status = 0; /* Not owned by Epic chip. */ + ep->rx_ring[i].rxstatus = 0; /* Not owned by Epic chip. */ ep->rx_ring[i].buflength = 0; ep->rx_ring[i].bufaddr = 0xBADF00D0; /* An invalid address. */ if (skb) { #if LINUX_VERSION_CODE < 0x20100 skb->free = 1; #endif - DEV_FREE_SKB(skb); + dev_free_skb(skb); } } for (i = 0; i < TX_RING_SIZE; i++) { if (ep->tx_skbuff[i]) - DEV_FREE_SKB(ep->tx_skbuff[i]); + dev_free_skb(ep->tx_skbuff[i]); ep->tx_skbuff[i] = 0; } - /* Green! Leave the chip in low-power mode. */ - outl(0x0008, ioaddr + GENCTL); + outl(0x440008, ioaddr + GENCTL); MOD_DEC_USE_COUNT; - return 0; } -static struct net_device_stats *epic_get_stats(struct device *dev) +static struct net_device_stats *epic_get_stats(struct net_device *dev) { struct epic_private *ep = (struct epic_private *)dev->priv; long ioaddr = dev->base_addr; - if (dev->start) { + if (netif_running(dev)) { /* Update the error counts. */ ep->stats.rx_missed_errors += inb(ioaddr + MPCNT); ep->stats.rx_frame_errors += inb(ioaddr + ALICNT); @@ -1244,16 +1235,16 @@ static inline unsigned ether_crc_le(int length, unsigned char *data) return crc; } - -static void set_rx_mode(struct device *dev) +static void set_rx_mode(struct net_device *dev) { long ioaddr = dev->base_addr; struct epic_private *ep = (struct epic_private *)dev->priv; unsigned char mc_filter[8]; /* Multicast hash filter */ + u32 new_rx_mode; int i; if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ - outl(0x002C, ioaddr + RxCtrl); + new_rx_mode = 0x002C; /* Unconditionally log net taps. */ printk(KERN_INFO "%s: Promiscuous mode enabled.\n", dev->name); memset(mc_filter, 0xff, sizeof(mc_filter)); @@ -1262,10 +1253,10 @@ static void set_rx_mode(struct device *dev) is never enabled. */ /* Too many to filter perfectly -- accept all multicasts. */ memset(mc_filter, 0xff, sizeof(mc_filter)); - outl(0x000C, ioaddr + RxCtrl); + new_rx_mode = 0x000C; } else if (dev->mc_count == 0) { - outl(0x0004, ioaddr + RxCtrl); - return; + memset(mc_filter, 0, sizeof(mc_filter)); + new_rx_mode = 0x0004; } else { /* Never executed, for now. */ struct dev_mc_list *mclist; @@ -1274,6 +1265,11 @@ static void set_rx_mode(struct device *dev) i++, mclist = mclist->next) set_bit(ether_crc_le(ETH_ALEN, mclist->dmi_addr) & 0x3f, mc_filter); + new_rx_mode = 0x000C; + } + if (ep->cur_rx_mode != new_rx_mode) { + ep->cur_rx_mode = new_rx_mode; + outl(new_rx_mode, ioaddr + RxCtrl); } /* ToDo: perhaps we need to stop the Tx and Rx process here? */ if (memcmp(mc_filter, ep->mc_filter, sizeof(mc_filter))) { @@ -1284,48 +1280,125 @@ static void set_rx_mode(struct device *dev) return; } -static int mii_ioctl(struct device *dev, struct ifreq *rq, int cmd) +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { + struct epic_private *ep = (void *)dev->priv; long ioaddr = dev->base_addr; u16 *data = (u16 *)&rq->ifr_data; + u32 *data32 = (void *)&rq->ifr_data; switch(cmd) { - case SIOCDEVPRIVATE: /* Get the address of the PHY in use. */ - data[0] = ((struct epic_private *)dev->priv)->phys[0] & 0x1f; + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ + data[0] = ep->phys[0] & 0x1f; /* Fall Through */ - case SIOCDEVPRIVATE+1: /* Read the specified MII register. */ - if (! dev->start) { + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + if (! netif_running(dev)) { outl(0x0200, ioaddr + GENCTL); outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); } - data[3] = mdio_read(ioaddr, data[0] & 0x1f, data[1] & 0x1f); - if (! dev->start) { -#ifdef notdef + data[3] = mdio_read(dev, data[0] & 0x1f, data[1] & 0x1f); +#if defined(PWRDWN_AFTER_IOCTL) + if (! netif_running(dev)) { outl(0x0008, ioaddr + GENCTL); outl((inl(ioaddr + NVCTL) & ~0x483C) | 0x0000, ioaddr + NVCTL); -#endif } +#endif return 0; - case SIOCDEVPRIVATE+2: /* Write the specified MII register */ - if (!suser()) + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ + if (!capable(CAP_NET_ADMIN)) return -EPERM; - if (! dev->start) { + if (! netif_running(dev)) { outl(0x0200, ioaddr + GENCTL); outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); } - mdio_write(ioaddr, data[0] & 0x1f, data[1] & 0x1f, data[2]); - if (! dev->start) { -#ifdef notdef + if (data[0] == ep->phys[0]) { + u16 value = data[2]; + switch (data[1]) { + case 0: + /* Check for autonegotiation on or reset. */ + ep->duplex_lock = (value & 0x9000) ? 0 : 1; + if (ep->duplex_lock) + ep->full_duplex = (value & 0x0100) ? 1 : 0; + break; + case 4: ep->advertising = value; break; + } + /* Perhaps check_duplex(dev), depending on chip semantics. */ + } + mdio_write(dev, data[0] & 0x1f, data[1] & 0x1f, data[2]); +#if defined(PWRDWN_AFTER_IOCTL) + if (! netif_running(dev)) { outl(0x0008, ioaddr + GENCTL); outl((inl(ioaddr + NVCTL) & ~0x483C) | 0x0000, ioaddr + NVCTL); -#endif } +#endif + return 0; + case SIOCGPARAMS: + data32[0] = ep->msg_level; + data32[1] = ep->multicast_filter_limit; + data32[2] = ep->max_interrupt_work; + data32[3] = ep->rx_copybreak; + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + ep->msg_level = data32[0]; + ep->multicast_filter_limit = data32[1]; + ep->max_interrupt_work = data32[2]; + ep->rx_copybreak = data32[3]; return 0; default: return -EOPNOTSUPP; } } +static int epic_pwr_event(void *dev_instance, int event) +{ + struct net_device *dev = dev_instance; + struct epic_private *ep = (struct epic_private *)dev->priv; + long ioaddr = dev->base_addr; + if (ep->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_SUSPEND: + epic_pause(dev); + /* Put the chip into low-power mode. */ + outl(0x0008, ioaddr + GENCTL); + break; + case DRV_RESUME: + epic_start(dev, 1); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + unregister_netdev(dev); + release_region(dev->base_addr, pci_id_tbl[ep->chip_id].io_size); +#ifndef USE_IO_OPS + iounmap((char *)dev->base_addr); +#endif + for (devp = &root_epic_dev; *devp; devp = next) { + next = &((struct epic_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (ep->priv_addr) + kfree(ep->priv_addr); + kfree(dev); + /*MOD_DEC_USE_COUNT;*/ + break; + } + } + + return 0; +} + #ifdef CARDBUS @@ -1333,19 +1406,33 @@ static int mii_ioctl(struct device *dev, struct ifreq *rq, int cmd) static dev_node_t *epic_attach(dev_locator_t *loc) { - struct device *dev; + struct net_device *dev; u16 dev_id; - u32 io; + u32 pciaddr; u8 bus, devfn, irq; + long ioaddr; if (loc->bus != LOC_PCI) return NULL; bus = loc->b.pci.bus; devfn = loc->b.pci.devfn; - printk(KERN_INFO "epic_attach(bus %d, function %d)\n", bus, devfn); - pcibios_read_config_dword(bus, devfn, PCI_BASE_ADDRESS_0, &io); + printk(KERN_DEBUG "epic_attach(bus %d, function %d)\n", bus, devfn); +#ifdef USE_IO_OPS + pcibios_read_config_dword(bus, devfn, PCI_BASE_ADDRESS_0, &pciaddr); + ioaddr = pciaddr & PCI_BASE_ADDRESS_IO_MASK; +#else + pcibios_read_config_dword(bus, devfn, PCI_BASE_ADDRESS_1, &pciaddr); + ioaddr = (long)ioremap(pciaddr & PCI_BASE_ADDRESS_MEM_MASK, + pci_id_tbl[1].io_size); +#endif pcibios_read_config_byte(bus, devfn, PCI_INTERRUPT_LINE, &irq); pcibios_read_config_word(bus, devfn, PCI_DEVICE_ID, &dev_id); - io &= ~3; - dev = epic_probe1(bus, devfn, NULL, -1); + if (ioaddr == 0 || irq == 0) { + printk(KERN_ERR "The EPIC/C CardBus Ethernet interface at %d/%d was " + "not assigned an %s.\n" + KERN_ERR " It will not be activated.\n", + bus, devfn, ioaddr == 0 ? "address" : "IRQ"); + return NULL; + } + dev = epic_probe1(pci_find_slot(bus, devfn), NULL, ioaddr, irq, 1, 0); if (dev) { dev_node_t *node = kmalloc(sizeof(dev_node_t), GFP_KERNEL); strcpy(node->dev_name, dev->name); @@ -1359,7 +1446,7 @@ static dev_node_t *epic_attach(dev_locator_t *loc) static void epic_suspend(dev_node_t *node) { - struct device **devp, **next; + struct net_device **devp, **next; printk(KERN_INFO "epic_suspend(%s)\n", node->dev_name); for (devp = &root_epic_dev; *devp; devp = next) { next = &((struct epic_private *)(*devp)->priv)->next_module; @@ -1374,19 +1461,19 @@ static void epic_suspend(dev_node_t *node) } static void epic_resume(dev_node_t *node) { - struct device **devp, **next; + struct net_device **devp, **next; printk(KERN_INFO "epic_resume(%s)\n", node->dev_name); for (devp = &root_epic_dev; *devp; devp = next) { next = &((struct epic_private *)(*devp)->priv)->next_module; if (strcmp((*devp)->name, node->dev_name) == 0) break; } if (*devp) { - epic_restart(*devp); + epic_start(*devp, 1); } } static void epic_detach(dev_node_t *node) { - struct device **devp, **next; + struct net_device **devp, **next; printk(KERN_INFO "epic_detach(%s)\n", node->dev_name); for (devp = &root_epic_dev; *devp; devp = next) { next = &((struct epic_private *)(*devp)->priv)->next_module; @@ -1394,6 +1481,10 @@ static void epic_detach(dev_node_t *node) } if (*devp) { unregister_netdev(*devp); + release_region((*devp)->base_addr, EPIC_TOTAL_SIZE); +#ifndef USE_IO_OPS + iounmap((char *)(*devp)->base_addr); +#endif kfree(*devp); *devp = *next; kfree(node); @@ -1410,48 +1501,58 @@ struct driver_operations epic_ops = { #ifdef MODULE -/* An additional parameter that may be passed in... */ -static int debug = -1; - -int -init_module(void) +int init_module(void) { - if (debug >= 0) - epic_debug = debug; + /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s", version); #ifdef CARDBUS register_driver(&epic_ops); return 0; #else - return epic100_probe(0); + return pci_drv_register(&epic_drv_id, NULL); #endif } -void -cleanup_module(void) +void cleanup_module(void) { - struct device *next_dev; + struct net_device *next_dev; #ifdef CARDBUS unregister_driver(&epic_ops); +#else + pci_drv_unregister(&epic_drv_id); #endif /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ while (root_epic_dev) { - next_dev = ((struct epic_private *)root_epic_dev->priv)->next_module; + struct epic_private *ep = (struct epic_private *)root_epic_dev->priv; unregister_netdev(root_epic_dev); - release_region(root_epic_dev->base_addr, EPIC_TOTAL_SIZE); + release_region(root_epic_dev->base_addr, pci_id_tbl[ep->chip_id].io_size); +#ifndef USE_IO_OPS + iounmap((char *)root_epic_dev->base_addr); +#endif + next_dev = ep->next_module; + if (ep->priv_addr) + kfree(ep->priv_addr); kfree(root_epic_dev); root_epic_dev = next_dev; } } - +#else +int epic100_probe(struct net_device *dev) +{ + int retval = pci_drv_register(&epic_drv_id, dev); + if (retval >= 0) + printk(KERN_INFO "%s", version); + return retval; +} #endif /* MODULE */ /* * Local variables: - * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c epic100.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" - * cardbus-compile-command: "gcc -DCARDBUS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c epic100.c -o epic_cb.o -I/usr/src/pcmcia-cs-3.0.5/include/" + * compile-command: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c epic100.c" + * cardbus-compile-command: "gcc -DCARDBUS -DMODULE -Wall -Wstrict-prototypes -O6 -c epic100.c -o epic_cb.o -I/usr/src/pcmcia/include/" * c-indent-level: 4 * c-basic-offset: 4 * tab-width: 4 diff --git a/linux/src/drivers/net/hamachi.c b/linux/src/drivers/net/hamachi.c new file mode 100644 index 0000000..fdcf43d --- /dev/null +++ b/linux/src/drivers/net/hamachi.c @@ -0,0 +1,1315 @@ +/* hamachi.c: A Packet Engines GNIC-II Gigabit Ethernet driver for Linux. */ +/* + Written 1998-2002 by Donald Becker. + + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. + + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 410 Severn Ave., Suite 210 + Annapolis MD 21403 + + This driver is for the Packet Engines GNIC-II PCI Gigabit Ethernet + adapter. + + Support and updates available at + http://www.scyld.com/network/hamachi.html +*/ + +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"hamachi.c:v1.04 11/17/2002 Written by Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/network/hamachi.html\n"; + +/* Automatically extracted configuration info: +probe-func: hamachi_probe +config-in: tristate 'Packet Engines "Hamachi" PCI Gigabit Ethernet support' CONFIG_HAMACHI +c-help-name: Packet Engines "Hamachi" PCI Gigabit Ethernet support +c-help-symbol: CONFIG_HAMACHI +c-help: This driver is for the Packet Engines "Hamachi" GNIC-2 Gigabit Ethernet +c-help: adapter. +c-help: Usage information and updates are available from +c-help: http://www.scyld.com/network/hamachi.html +*/ + +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ + +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; + +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ +static int max_interrupt_work = 40; + +/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). + The Hamachi has a 64 element perfect filter. */ +static int multicast_filter_limit = 32; + +/* Set the copy breakpoint for the copy-only-tiny-frames scheme. + Setting to > 1518 effectively disables this feature. */ +static int rx_copybreak = 0; + +/* A override for the hardware detection of bus width. + Set to 1 to force 32 bit PCI bus detection. Set to 4 to force 64 bit. + Add 2 to disable parity detection. +*/ +static int force32 = 0; + +/* Used to pass the media type, etc. + These exist for driver interoperability. + Only 1 Gigabit is supported by the chip. +*/ +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; + +/* Operational parameters that are set at compile time. */ + +/* Keep the ring sizes a power of two for compile efficiency. + The compiler will convert <unsigned>'%'<2^N> into a bit mask. + Making the Tx ring too large decreases the effectiveness of channel + bonding and packet priority. + There are no ill effects from too-large receive rings. */ +#define TX_RING_SIZE 64 +#define TX_QUEUE_LEN 60 /* Limit ring entries actually used. */ +#define RX_RING_SIZE 128 + +/* Operational parameters that usually are not changed. */ +/* Time in jiffies before concluding the transmitter is hung. */ +#define TX_TIMEOUT (6*HZ) + +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. This is not a limit, + but a way to keep a consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 + +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif + +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + +#include <linux/version.h> +#if defined(MODVERSIONS) +#include <linux/modversions.h> +#endif +#include <linux/module.h> + +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else +#include <linux/malloc.h> +#endif +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <asm/processor.h> /* Processor type for cache alignment. */ +#include <asm/bitops.h> +#include <asm/io.h> +#include <asm/unaligned.h> + +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif + +/* Condensed operations for readability. */ +#if ADDRLEN == 64 +#define virt_to_desc(addr) cpu_to_le64(virt_to_bus(addr)) +#else +#define virt_to_desc(addr) cpu_to_le32(virt_to_bus(addr)) +#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) +#endif + +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif + +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); +MODULE_DESCRIPTION("Packet Engines 'Hamachi' GNIC-II Gigabit Ethernet driver"); +MODULE_LICENSE("GPL"); +MODULE_PARM(debug, "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(rx_copybreak, "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(multicast_filter_limit, "i"); +MODULE_PARM(max_interrupt_work, "i"); +MODULE_PARM(force32, "i"); +MODULE_PARM_DESC(debug, "Driver message level (0-31)"); +MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex"); +MODULE_PARM_DESC(max_interrupt_work, + "Driver maximum events handled per interrupt"); +MODULE_PARM_DESC(full_duplex, + "Non-zero to force full duplex, non-negotiated link " + "(unused, deprecated)."); +MODULE_PARM_DESC(rx_copybreak, + "Breakpoint in bytes for copy-only-tiny-frames"); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast addresses before switching to Rx-all-multicast"); +MODULE_PARM_DESC(force32, "Set to 1 to force 32 bit PCI bus use."); + +/* + Theory of Operation + +I. Board Compatibility + +This device driver is designed for the Packet Engines "Hamachi" +Gigabit Ethernet chip. The only PCA currently supported is the GNIC-II 64-bit +66Mhz PCI card. + +II. Board-specific settings + +No jumpers exist on the board. The chip supports software correction of +various motherboard wiring errors, however this driver does not support +that feature. + +III. Driver operation + +IIIa. Ring buffers + +The Hamachi uses a typical descriptor based bus-master architecture. +The descriptor list is similar to that used by the Digital Tulip. +This driver uses two statically allocated fixed-size descriptor lists +formed into rings by a branch from the final descriptor to the beginning of +the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. + +This driver uses a zero-copy receive and transmit scheme similar my other +network drivers. +The driver allocates full frame size skbuffs for the Rx ring buffers at +open() time and passes the skb->data field to the Hamachi as receive data +buffers. When an incoming frame is less than RX_COPYBREAK bytes long, +a fresh skbuff is allocated and the frame is copied to the new skbuff. +When the incoming frame is larger, the skbuff is passed directly up the +protocol stack and replaced by a newly allocated skbuff. + +The RX_COPYBREAK value is chosen to trade-off the memory wasted by +using a full-sized skbuff for small frames vs. the copying costs of larger +frames. Gigabit cards are typically used on generously configured machines +and the underfilled buffers have negligible impact compared to the benefit of +a single allocation size, so the default value of zero results in never +copying packets. + +IIIb/c. Transmit/Receive Structure + +The Rx and Tx descriptor structure are straight-forward, with no historical +baggage that must be explained. Unlike the awkward DBDMA structure, there +are no unused fields or option bits that had only one allowable setting. + +Two details should be noted about the descriptors: The chip supports both 32 +bit and 64 bit address structures, and the length field is overwritten on +the receive descriptors. The descriptor length is set in the control word +for each channel. The development driver uses 32 bit addresses only, however +64 bit addresses may be enabled for 64 bit architectures e.g. the Alpha. + +IIId. Synchronization + +This driver is very similar to my other network drivers. +The driver runs as two independent, single-threaded flows of control. One +is the send-packet routine, which enforces single-threaded use by the +dev->tbusy flag. The other thread is the interrupt handler, which is single +threaded by the hardware and other software. + +The send packet thread has partial control over the Tx ring and 'dev->tbusy' +flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next +queue slot is empty, it clears the tbusy flag when finished otherwise it sets +the 'hmp->tx_full' flag. + +The interrupt handler has exclusive control over the Rx ring and records stats +from the Tx ring. After reaping the stats, it marks the Tx queue entry as +empty by incrementing the dirty_tx mark. Iff the 'hmp->tx_full' flag is set, it +clears both the tx_full and tbusy flags. + +IV. Notes + +Thanks to Kim Stearns of Packet Engines for providing a pair of GNIC-II boards. + +IVb. References + +Hamachi Engineering Design Specification, 5/15/97 +(Note: This version was marked "Confidential".) + +IVc. Errata + +None noted. +*/ + + +/* The table for PCI detection and activation. */ + +static void *hamachi_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +enum chip_capability_flags { CanHaveMII=1, }; + +static struct pci_id_info pci_id_tbl[] = { + {"Packet Engines GNIC-II \"Hamachi\"", { 0x09111318, 0xffffffff,}, + PCI_USES_MEM | PCI_USES_MASTER | PCI_ADDR0 | PCI_ADDR_64BITS, 0x400, 0, }, + { 0,}, +}; + +struct drv_id_info hamachi_drv_id = { + "hamachi", 0, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, + hamachi_probe1, 0, +}; + +/* Offsets to the Hamachi registers. Various sizes. */ +enum hamachi_offsets { + TxDMACtrl=0x00, TxCmd=0x04, TxStatus=0x06, TxPtr=0x08, TxCurPtr=0x10, + RxDMACtrl=0x20, RxCmd=0x24, RxStatus=0x26, RxPtr=0x28, RxCurPtr=0x30, + PCIClkMeas=0x060, MiscStatus=0x066, ChipRev=0x68, ChipReset=0x06B, + LEDCtrl=0x06C, VirtualJumpers=0x06D, + TxChecksum=0x074, RxChecksum=0x076, + TxIntrCtrl=0x078, RxIntrCtrl=0x07C, + InterruptEnable=0x080, InterruptClear=0x084, IntrStatus=0x088, + EventStatus=0x08C, + MACCnfg=0x0A0, FrameGap0=0x0A2, FrameGap1=0x0A4, + /* See enum MII_offsets below. */ + MACCnfg2=0x0B0, RxDepth=0x0B8, FlowCtrl=0x0BC, MaxFrameSize=0x0CE, + AddrMode=0x0D0, StationAddr=0x0D2, + /* Gigabit AutoNegotiation. */ + ANCtrl=0x0E0, ANStatus=0x0E2, ANXchngCtrl=0x0E4, ANAdvertise=0x0E8, + ANLinkPartnerAbility=0x0EA, + EECmdStatus=0x0F0, EEData=0x0F1, EEAddr=0x0F2, + FIFOcfg=0x0F8, +}; + +/* Offsets to the MII-mode registers. */ +enum MII_offsets { + MII_Cmd=0xA6, MII_Addr=0xA8, MII_Wr_Data=0xAA, MII_Rd_Data=0xAC, + MII_Status=0xAE, +}; + +/* Bits in the interrupt status/mask registers. */ +enum intr_status_bits { + IntrRxDone=0x01, IntrRxPCIFault=0x02, IntrRxPCIErr=0x04, + IntrTxDone=0x100, IntrTxPCIFault=0x200, IntrTxPCIErr=0x400, + LinkChange=0x10000, NegotiationChange=0x20000, StatsMax=0x40000, }; + +/* The Hamachi Rx and Tx buffer descriptors. */ +struct hamachi_desc { + u32 status_n_length; +#if ADDRLEN == 64 + u32 pad; + u64 addr; +#else + u32 addr; +#endif +}; + +/* Bits in hamachi_desc.status */ +enum desc_status_bits { + DescOwn=0x80000000, DescEndPacket=0x40000000, DescEndRing=0x20000000, + DescIntr=0x10000000, +}; + +#define PRIV_ALIGN 15 /* Required alignment mask */ +struct hamachi_private { + /* Descriptor rings first for alignment. Tx requires a second descriptor + for status. */ + struct hamachi_desc rx_ring[RX_RING_SIZE]; + struct hamachi_desc tx_ring[TX_RING_SIZE]; + /* The addresses of receive-in-place skbuffs. */ + struct sk_buff* rx_skbuff[RX_RING_SIZE]; + /* The saved address of a sent-in-place packet/buffer, for skfree(). */ + struct sk_buff* tx_skbuff[TX_RING_SIZE]; + struct net_device *next_module; + void *priv_addr; /* Unaligned address for kfree */ + struct net_device_stats stats; + struct timer_list timer; /* Media monitoring timer. */ + int chip_id, drv_flags; + struct pci_dev *pci_dev; + + /* Frequently used and paired value: keep adjacent for cache effect. */ + int msg_level; + int max_interrupt_work; + long in_interrupt; + + struct hamachi_desc *rx_head_desc; + unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ + unsigned int rx_buf_sz; /* Based on MTU+slack. */ + int rx_copybreak; + int multicast_filter_limit; + int rx_mode; + + unsigned int cur_tx, dirty_tx; + unsigned int tx_full:1; /* The Tx queue is full. */ + unsigned int full_duplex:1; /* Full-duplex operation requested. */ + unsigned int duplex_lock:1; + unsigned int medialock:1; /* Do not sense media. */ + unsigned int default_port; /* Last dev->if_port value. */ + /* MII transceiver section. */ + int mii_cnt; /* MII device addresses. */ + u16 advertising; /* NWay media advertisement */ + unsigned char phys[2]; /* MII device addresses. */ +}; + +static int read_eeprom(struct net_device *dev, int location); +static int mdio_read(long ioaddr, int phy_id, int location); +static void mdio_write(long ioaddr, int phy_id, int location, int value); +static int hamachi_open(struct net_device *dev); +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +#ifdef HAVE_CHANGE_MTU +static int change_mtu(struct net_device *dev, int new_mtu); +#endif +static void hamachi_timer(unsigned long data); +static void hamachi_tx_timeout(struct net_device *dev); +static void hamachi_init_ring(struct net_device *dev); +static int hamachi_start_xmit(struct sk_buff *skb, struct net_device *dev); +static void hamachi_interrupt(int irq, void *dev_instance, struct pt_regs *regs); +static int hamachi_rx(struct net_device *dev); +static void hamachi_error(struct net_device *dev, int intr_status); +static int hamachi_close(struct net_device *dev); +static struct net_device_stats *hamachi_get_stats(struct net_device *dev); +static void set_rx_mode(struct net_device *dev); + + + +/* A list of our installed devices, for removing the driver module. */ +static struct net_device *root_hamachi_dev = NULL; + +#ifndef MODULE +int hamachi_probe(struct net_device *dev) +{ + if (pci_drv_register(&hamachi_drv_id, dev) < 0) + return -ENODEV; + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return 0; +} +#endif + +static void *hamachi_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int card_idx) +{ + struct net_device *dev; + struct hamachi_private *np; + void *priv_mem; + int i, option = card_idx < MAX_UNITS ? options[card_idx] : 0; + + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; + + printk(KERN_INFO "%s: %s type %x at 0x%lx, ", + dev->name, pci_id_tbl[chip_idx].name, (int)readl(ioaddr + ChipRev), + ioaddr); + + for (i = 0; i < 6; i++) + dev->dev_addr[i] = read_eeprom(dev, 4 + i); + /* Alternate: readb(ioaddr + StationAddr + i); */ + for (i = 0; i < 5; i++) + printk("%2.2x:", dev->dev_addr[i]); + printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq); + + i = readb(ioaddr + PCIClkMeas); + printk(KERN_INFO "%s: %d-bit %d Mhz PCI bus (%d), Virtual Jumpers " + "%2.2x, LPA %4.4x.\n", + dev->name, readw(ioaddr + MiscStatus) & 1 ? 64 : 32, + i ? 2000/(i&0x7f) : 0, i&0x7f, (int)readb(ioaddr + VirtualJumpers), + (int)readw(ioaddr + ANLinkPartnerAbility)); + + /* Hmmm, do we really need to reset the chip???. */ + writeb(1, ioaddr + ChipReset); + + /* If the bus size is misidentified, do the following. */ + if (force32) + writeb(force32, ioaddr + VirtualJumpers); + + /* Make certain elements e.g. descriptor lists are aligned. */ + priv_mem = kmalloc(sizeof(*np) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; + + dev->base_addr = ioaddr; + dev->irq = irq; + + dev->priv = np = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); + memset(np, 0, sizeof(*np)); + np->priv_addr = priv_mem; + + np->next_module = root_hamachi_dev; + root_hamachi_dev = dev; + + np->pci_dev = pdev; + np->chip_id = chip_idx; + np->drv_flags = pci_id_tbl[chip_idx].drv_flags; + np->msg_level = (1 << debug) - 1; + np->rx_copybreak = rx_copybreak; + np->max_interrupt_work = max_interrupt_work; + np->multicast_filter_limit = + multicast_filter_limit < 64 ? multicast_filter_limit : 64; + + if (dev->mem_start) + option = dev->mem_start; + + /* The lower four bits are the media type. */ + if (option > 0) { + if (option & 0x2220) + np->full_duplex = 1; + np->default_port = option & 15; + if (np->default_port & 0x3330) + np->medialock = 1; + } + if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) + np->full_duplex = 1; + + if (np->full_duplex) { + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO "%s: Set to forced full duplex, autonegotiation" + " disabled.\n", dev->name); + np->duplex_lock = 1; + } + + /* The Hamachi-specific entries in the device structure. */ + dev->open = &hamachi_open; + dev->hard_start_xmit = &hamachi_start_xmit; + dev->stop = &hamachi_close; + dev->get_stats = &hamachi_get_stats; + dev->set_multicast_list = &set_rx_mode; + dev->do_ioctl = &mii_ioctl; +#ifdef HAVE_CHANGE_MTU + dev->change_mtu = change_mtu; +#endif + + if (np->drv_flags & CanHaveMII) { + int phy, phy_idx = 0; + for (phy = 0; phy < 32 && phy_idx < 4; phy++) { + int mii_status = mdio_read(ioaddr, phy, 1); + if (mii_status != 0xffff && mii_status != 0x0000) { + np->phys[phy_idx++] = phy; + np->advertising = mdio_read(ioaddr, phy, 4); + printk(KERN_INFO "%s: MII PHY found at address %d, status " + "0x%4.4x advertising %4.4x.\n", + dev->name, phy, mii_status, np->advertising); + } + } + np->mii_cnt = phy_idx; + } +#ifdef notyet + /* Disable PCI Parity Error (0x02) or PCI 64 Bit (0x01) for miswired + motherboards. */ + if (readb(ioaddr + VirtualJumpers) != 0x30) + writeb(0x33, ioaddr + VirtualJumpers) +#endif + /* Configure gigabit autonegotiation. */ + writew(0x0400, ioaddr + ANXchngCtrl); /* Enable legacy links. */ + writew(0x08e0, ioaddr + ANAdvertise); /* Set our advertise word. */ + writew(0x1000, ioaddr + ANCtrl); /* Enable negotiation */ + + return dev; +} + +static int read_eeprom(struct net_device *dev, int location) +{ + struct hamachi_private *np = (void *)dev->priv; + long ioaddr = dev->base_addr; + int bogus_cnt = 1000; + + writew(location, ioaddr + EEAddr); + writeb(0x02, ioaddr + EECmdStatus); + while ((readb(ioaddr + EECmdStatus) & 0x40) && --bogus_cnt > 0) + ; + if (np->msg_level & NETIF_MSG_MISC) + printk(KERN_DEBUG " EEPROM status is %2.2x after %d ticks.\n", + (int)readb(ioaddr + EECmdStatus), 1000- bogus_cnt); + return readb(ioaddr + EEData); +} + +/* MII Managemen Data I/O accesses. + These routines assume the MDIO controller is idle, and do not exit until + the command is finished. */ + +static int mdio_read(long ioaddr, int phy_id, int location) +{ + int i; + + writew((phy_id<<8) + location, ioaddr + MII_Addr); + writew(1, ioaddr + MII_Cmd); + for (i = 10000; i >= 0; i--) + if ((readw(ioaddr + MII_Status) & 1) == 0) + break; + return readw(ioaddr + MII_Rd_Data); +} + +static void mdio_write(long ioaddr, int phy_id, int location, int value) +{ + int i; + + writew((phy_id<<8) + location, ioaddr + MII_Addr); + writew(value, ioaddr + MII_Wr_Data); + + /* Wait for the command to finish. */ + for (i = 10000; i >= 0; i--) + if ((readw(ioaddr + MII_Status) & 1) == 0) + break; + return; +} + + +static int hamachi_open(struct net_device *dev) +{ + struct hamachi_private *hmp = (struct hamachi_private *)dev->priv; + long ioaddr = dev->base_addr; + int i; + + /* Do we need to reset the chip??? */ + + MOD_INC_USE_COUNT; + + if (request_irq(dev->irq, &hamachi_interrupt, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; + return -EAGAIN; + } + + if (hmp->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: hamachi_open() irq %d.\n", + dev->name, dev->irq); + + hamachi_init_ring(dev); + +#if ADDRLEN == 64 + writel(virt_to_bus(hmp->rx_ring), ioaddr + RxPtr); + writel(virt_to_bus(hmp->rx_ring) >> 32, ioaddr + RxPtr + 4); + writel(virt_to_bus(hmp->tx_ring), ioaddr + TxPtr); + writel(virt_to_bus(hmp->tx_ring) >> 32, ioaddr + TxPtr + 4); +#else + writel(virt_to_bus(hmp->rx_ring), ioaddr + RxPtr); + writel(virt_to_bus(hmp->tx_ring), ioaddr + TxPtr); +#endif + + for (i = 0; i < 6; i++) + writeb(dev->dev_addr[i], ioaddr + StationAddr + i); + + /* Initialize other registers: with so many this eventually this will + converted to an offset/value list. */ + /* Configure the FIFO for 512K external, 16K used for Tx. */ + writew(0x0028, ioaddr + FIFOcfg); + + if (dev->if_port == 0) + dev->if_port = hmp->default_port; + hmp->in_interrupt = 0; + + /* Setting the Rx mode will start the Rx process. */ + /* We are always in full-duplex mode with gigabit! */ + hmp->full_duplex = 1; + writew(0x0001, ioaddr + RxChecksum); /* Enable Rx IP partial checksum. */ + writew(0x8000, ioaddr + MACCnfg); /* Soft reset the MAC */ + writew(0x215F, ioaddr + MACCnfg); + writew(0x000C, ioaddr + FrameGap0); /* 0060/4060 for non-MII 10baseT */ + writew(0x1018, ioaddr + FrameGap1); + writew(0x2780, ioaddr + MACCnfg2); /* Upper 16 bits control LEDs. */ + /* Enable automatic generation of flow control frames, period 0xffff. */ + writel(0x0030FFFF, ioaddr + FlowCtrl); + writew(dev->mtu+19, ioaddr + MaxFrameSize); /* hmp->rx_buf_sz ??? */ + + /* Enable legacy links. */ + writew(0x0400, ioaddr + ANXchngCtrl); /* Enable legacy links. */ + /* Initial Link LED to blinking red. */ + writeb(0x03, ioaddr + LEDCtrl); + + /* Configure interrupt mitigation. This has a great effect on + performance, so systems tuning should start here!. */ + writel(0x00080000, ioaddr + TxIntrCtrl); + writel(0x00000020, ioaddr + RxIntrCtrl); + + hmp->rx_mode = 0; /* Force Rx mode write. */ + set_rx_mode(dev); + netif_start_tx_queue(dev); + + /* Enable interrupts by setting the interrupt mask. */ + writel(0x80878787, ioaddr + InterruptEnable); + writew(0x0000, ioaddr + EventStatus); /* Clear non-interrupting events */ + + /* Configure and start the DMA channels. */ + /* Burst sizes are in the low three bits: size = 4<<(val&7) */ +#if ADDRLEN == 64 + writew(0x0055, ioaddr + RxDMACtrl); /* 128 dword bursts */ + writew(0x0055, ioaddr + TxDMACtrl); +#else + writew(0x0015, ioaddr + RxDMACtrl); + writew(0x0015, ioaddr + TxDMACtrl); +#endif + writew(1, dev->base_addr + RxCmd); + + if (hmp->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Done hamachi_open(), status: Rx %x Tx %x.\n", + dev->name, (int)readw(ioaddr + RxStatus), + (int)readw(ioaddr + TxStatus)); + + /* Set the timer to check for link beat. */ + init_timer(&hmp->timer); + hmp->timer.expires = jiffies + 3*HZ; + hmp->timer.data = (unsigned long)dev; + hmp->timer.function = &hamachi_timer; /* timer handler */ + add_timer(&hmp->timer); + + return 0; +} + +static void hamachi_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct hamachi_private *hmp = (struct hamachi_private *)dev->priv; + long ioaddr = dev->base_addr; + int next_tick = 10*HZ; + + if (hmp->msg_level & NETIF_MSG_TIMER) { + printk(KERN_INFO "%s: Hamachi Autonegotiation status %4.4x, LPA " + "%4.4x.\n", dev->name, (int)readw(ioaddr + ANStatus), + (int)readw(ioaddr + ANLinkPartnerAbility)); + printk(KERN_INFO "%s: Autonegotiation regs %4.4x %4.4x %4.4x " + "%4.4x %4.4x %4.4x.\n", dev->name, + (int)readw(ioaddr + 0x0e0), + (int)readw(ioaddr + 0x0e2), + (int)readw(ioaddr + 0x0e4), + (int)readw(ioaddr + 0x0e6), + (int)readw(ioaddr + 0x0e8), + (int)readw(ioaddr + 0x0eA)); + } + /* This has a small false-trigger window. */ + if (netif_queue_paused(dev) && + (jiffies - dev->trans_start) > TX_TIMEOUT + && hmp->cur_tx - hmp->dirty_tx > 1) { + hamachi_tx_timeout(dev); + } + /* We could do something here... nah. */ + hmp->timer.expires = jiffies + next_tick; + add_timer(&hmp->timer); +} + +static void hamachi_tx_timeout(struct net_device *dev) +{ + struct hamachi_private *hmp = (struct hamachi_private *)dev->priv; + long ioaddr = dev->base_addr; + + printk(KERN_WARNING "%s: Hamachi transmit timed out, status %8.8x," + " resetting...\n", dev->name, (int)readw(ioaddr + TxStatus)); + + if (hmp->msg_level & NETIF_MSG_TX_ERR) { + int i; + printk(KERN_DEBUG " Rx ring %p: ", hmp->rx_ring); + for (i = 0; i < RX_RING_SIZE; i++) + printk(" %8.8x", (unsigned int)hmp->rx_ring[i].status_n_length); + printk("\n"KERN_DEBUG" Tx ring %p: ", hmp->tx_ring); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" %4.4x", hmp->tx_ring[i].status_n_length); + printk("\n"); + } + + /* Perhaps we should reinitialize the hardware here. */ + dev->if_port = 0; + /* Stop and restart the chip's Tx processes . */ + + /* Trigger an immediate transmit demand. */ + writew(2, dev->base_addr + TxCmd); + writew(1, dev->base_addr + TxCmd); + writew(1, dev->base_addr + RxCmd); + + dev->trans_start = jiffies; + hmp->stats.tx_errors++; + return; +} + + +/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ +static void hamachi_init_ring(struct net_device *dev) +{ + struct hamachi_private *hmp = (struct hamachi_private *)dev->priv; + int i; + + hmp->tx_full = 0; + hmp->cur_rx = hmp->cur_tx = 0; + hmp->dirty_rx = hmp->dirty_tx = 0; + + /* Size of each temporary Rx buffer. Add 8 if you do Rx checksumming! */ + hmp->rx_buf_sz = dev->mtu + 18 + 8; + /* Match other driver's allocation size when possible. */ + if (hmp->rx_buf_sz < PKT_BUF_SZ) + hmp->rx_buf_sz = PKT_BUF_SZ; + hmp->rx_head_desc = &hmp->rx_ring[0]; + + /* Initialize all Rx descriptors. */ + for (i = 0; i < RX_RING_SIZE; i++) { + hmp->rx_ring[i].status_n_length = 0; + hmp->rx_skbuff[i] = 0; + } + /* Fill in the Rx buffers. Handle allocation failure gracefully. */ + for (i = 0; i < RX_RING_SIZE; i++) { + struct sk_buff *skb = dev_alloc_skb(hmp->rx_buf_sz); + hmp->rx_skbuff[i] = skb; + if (skb == NULL) + break; + skb->dev = dev; /* Mark as being used by this device. */ + skb_reserve(skb, 2); /* 16 byte align the IP header. */ + hmp->rx_ring[i].addr = virt_to_desc(skb->tail); + hmp->rx_ring[i].status_n_length = + cpu_to_le32(DescOwn | DescEndPacket | DescIntr | hmp->rx_buf_sz); + } + hmp->dirty_rx = (unsigned int)(i - RX_RING_SIZE); + /* Mark the last entry as wrapping the ring. */ + hmp->rx_ring[i-1].status_n_length |= cpu_to_le32(DescEndRing); + + for (i = 0; i < TX_RING_SIZE; i++) { + hmp->tx_skbuff[i] = 0; + hmp->tx_ring[i].status_n_length = 0; + } + return; +} + +static int hamachi_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct hamachi_private *hmp = (struct hamachi_private *)dev->priv; + unsigned entry; + + /* Block a timer-based transmit from overlapping. This could better be + done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */ + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + hamachi_tx_timeout(dev); + return 1; + } + + /* Note: Ordering is important here, set the field with the + "ownership" bit last, and only then increment cur_tx. */ + + /* Calculate the next Tx descriptor entry. */ + entry = hmp->cur_tx % TX_RING_SIZE; + + hmp->tx_skbuff[entry] = skb; + + hmp->tx_ring[entry].addr = virt_to_desc(skb->data); + if (entry >= TX_RING_SIZE-1) /* Wrap ring */ + hmp->tx_ring[entry].status_n_length = + cpu_to_le32(DescOwn|DescEndPacket|DescEndRing|DescIntr | skb->len); + else + hmp->tx_ring[entry].status_n_length = + cpu_to_le32(DescOwn|DescEndPacket | skb->len); + hmp->cur_tx++; + + /* Architecture-specific: explicitly flush cache lines here. */ + + /* Wake the potentially-idle transmit channel. */ + writew(1, dev->base_addr + TxCmd); + + if (hmp->cur_tx - hmp->dirty_tx >= TX_QUEUE_LEN - 1) { + hmp->tx_full = 1; + if (hmp->cur_tx - hmp->dirty_tx < TX_QUEUE_LEN - 1) { + netif_unpause_tx_queue(dev); + hmp->tx_full = 0; + } else + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); /* Typical path */ + dev->trans_start = jiffies; + + if (hmp->msg_level & NETIF_MSG_TX_QUEUED) { + printk(KERN_DEBUG "%s: Hamachi transmit frame #%d length %d queued " + "in slot %d.\n", dev->name, hmp->cur_tx, (int)skb->len, entry); + } + return 0; +} + +/* The interrupt handler does all of the Rx thread work and cleans up + after the Tx thread. */ +static void hamachi_interrupt(int irq, void *dev_instance, struct pt_regs *rgs) +{ + struct net_device *dev = (struct net_device *)dev_instance; + struct hamachi_private *hmp; + long ioaddr; + int boguscnt = max_interrupt_work; + +#ifndef final_version /* Can never occur. */ + if (dev == NULL) { + printk (KERN_ERR "hamachi_interrupt(): irq %d for unknown device.\n", irq); + return; + } +#endif + + ioaddr = dev->base_addr; + hmp = (struct hamachi_private *)dev->priv; + if (test_and_set_bit(0, (void*)&hmp->in_interrupt)) { + printk(KERN_ERR "%s: Re-entering the interrupt handler.\n", dev->name); + hmp->in_interrupt = 0; /* Avoid future hang on bug */ + return; + } + + do { + u32 intr_status = readl(ioaddr + InterruptClear); + + if (hmp->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Hamachi interrupt, status %4.4x.\n", + dev->name, intr_status); + + if (intr_status == 0) + break; + + if (intr_status & IntrRxDone) + hamachi_rx(dev); + + for (; hmp->cur_tx - hmp->dirty_tx > 0; hmp->dirty_tx++) { + int entry = hmp->dirty_tx % TX_RING_SIZE; + if (!(hmp->tx_ring[entry].status_n_length & cpu_to_le32(DescOwn))) + break; + if (hmp->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG "%s: Transmit done, Tx status %8.8x.\n", + dev->name, hmp->tx_ring[entry].status_n_length); + /* Free the original skb. */ + dev_free_skb_irq(hmp->tx_skbuff[entry]); + hmp->tx_skbuff[entry] = 0; + hmp->stats.tx_packets++; + } + if (hmp->tx_full + && hmp->cur_tx - hmp->dirty_tx < TX_QUEUE_LEN - 4) { + /* The ring is no longer full, clear tbusy. */ + hmp->tx_full = 0; + netif_resume_tx_queue(dev); + } + + /* Abnormal error summary/uncommon events handlers. */ + if (intr_status & + (IntrTxPCIFault | IntrTxPCIErr | IntrRxPCIFault | IntrRxPCIErr | + LinkChange | NegotiationChange | StatsMax)) + hamachi_error(dev, intr_status); + + if (--boguscnt < 0) { + printk(KERN_WARNING "%s: Too much work at interrupt, " + "status=0x%4.4x.\n", + dev->name, intr_status); + break; + } + } while (1); + + if (hmp->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", + dev->name, (int)readl(ioaddr + IntrStatus)); + clear_bit(0, (void*)&hmp->in_interrupt); + return; +} + +/* This routine is logically part of the interrupt handler, but separated + for clarity and better register allocation. */ +static int hamachi_rx(struct net_device *dev) +{ + struct hamachi_private *hmp = (struct hamachi_private *)dev->priv; + int entry = hmp->cur_rx % RX_RING_SIZE; + int boguscnt = hmp->dirty_rx + RX_RING_SIZE - hmp->cur_rx; + + if (hmp->msg_level & NETIF_MSG_RX_STATUS) { + printk(KERN_DEBUG " In hamachi_rx(), entry %d status %4.4x.\n", + entry, hmp->rx_ring[entry].status_n_length); + } + + /* If EOP is set on the next entry, it's a new packet. Send it up. */ + while ( ! (hmp->rx_head_desc->status_n_length & cpu_to_le32(DescOwn))) { + struct hamachi_desc *desc = hmp->rx_head_desc; + u32 desc_status = le32_to_cpu(desc->status_n_length); + u16 data_size = desc_status; /* Implicit truncate */ + u8 *buf_addr = hmp->rx_skbuff[entry]->tail; + s32 frame_status = + le32_to_cpu(get_unaligned((s32*)&(buf_addr[data_size - 12]))); + + if (hmp->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " hamachi_rx() status was %8.8x.\n", + frame_status); + if (--boguscnt < 0) + break; + if ( ! (desc_status & DescEndPacket)) { + printk(KERN_WARNING "%s: Oversized Ethernet frame spanned " + "multiple buffers, entry %#x length %d status %4.4x!\n", + dev->name, hmp->cur_rx, data_size, desc_status); + printk(KERN_WARNING "%s: Oversized Ethernet frame %p vs %p.\n", + dev->name, desc, &hmp->rx_ring[hmp->cur_rx % RX_RING_SIZE]); + printk(KERN_WARNING "%s: Oversized Ethernet frame -- next status" + " %x last status %x.\n", dev->name, + hmp->rx_ring[(hmp->cur_rx+1) % RX_RING_SIZE].status_n_length, + hmp->rx_ring[(hmp->cur_rx-1) % RX_RING_SIZE].status_n_length); + hmp->stats.rx_length_errors++; + } /* else Omit for prototype errata??? */ + if (frame_status & 0x00380000) { + /* There was a error. */ + if (hmp->msg_level & NETIF_MSG_RX_ERR) + printk(KERN_DEBUG " hamachi_rx() Rx error was %8.8x.\n", + frame_status); + hmp->stats.rx_errors++; + if (frame_status & 0x00600000) hmp->stats.rx_length_errors++; + if (frame_status & 0x00080000) hmp->stats.rx_frame_errors++; + if (frame_status & 0x00100000) hmp->stats.rx_crc_errors++; + if (frame_status < 0) hmp->stats.rx_dropped++; + } else { + struct sk_buff *skb; + u16 pkt_len = (frame_status & 0x07ff) - 4; /* Omit CRC */ + +#if ! defined(final_version) && 0 + if (hmp->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " hamachi_rx() normal Rx pkt length %d" + " of %d, bogus_cnt %d.\n", + pkt_len, data_size, boguscnt); + if (hmp->msg_level & NETIF_MSG_PKTDATA) + printk(KERN_DEBUG"%s: rx status %8.8x %8.8x %8.8x %8.8x %8.8x.\n", + dev->name, + *(s32*)&(buf_addr[data_size - 20]), + *(s32*)&(buf_addr[data_size - 16]), + *(s32*)&(buf_addr[data_size - 12]), + *(s32*)&(buf_addr[data_size - 8]), + *(s32*)&(buf_addr[data_size - 4])); +#endif + /* Check if the packet is long enough to accept without copying + to a minimally-sized skbuff. */ + if (pkt_len < rx_copybreak + && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { + skb->dev = dev; + skb_reserve(skb, 2); /* 16 byte align the IP header */ + eth_copy_and_sum(skb, hmp->rx_skbuff[entry]->tail, pkt_len, 0); + skb_put(skb, pkt_len); + } else { + char *temp = skb_put(skb = hmp->rx_skbuff[entry], pkt_len); + hmp->rx_skbuff[entry] = NULL; +#if ! defined(final_version) + if (bus_to_virt(desc->addr) != temp) + printk(KERN_ERR "%s: Internal fault: The skbuff addresses " + "do not match in hamachi_rx: %p vs. %p / %p.\n", + dev->name, bus_to_virt(desc->addr), + skb->head, temp); +#endif + } + skb->protocol = eth_type_trans(skb, dev); + /* Note: checksum -> skb->ip_summed = CHECKSUM_UNNECESSARY; */ + netif_rx(skb); + dev->last_rx = jiffies; + hmp->stats.rx_packets++; + } + entry = (++hmp->cur_rx) % RX_RING_SIZE; + hmp->rx_head_desc = &hmp->rx_ring[entry]; + } + + /* Refill the Rx ring buffers. */ + for (; hmp->cur_rx - hmp->dirty_rx > 0; hmp->dirty_rx++) { + struct sk_buff *skb; + entry = hmp->dirty_rx % RX_RING_SIZE; + if (hmp->rx_skbuff[entry] == NULL) { + skb = dev_alloc_skb(hmp->rx_buf_sz); + hmp->rx_skbuff[entry] = skb; + if (skb == NULL) + break; /* Better luck next round. */ + skb->dev = dev; /* Mark as being used by this device. */ + skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ + hmp->rx_ring[entry].addr = virt_to_desc(skb->tail); + } + if (entry >= RX_RING_SIZE-1) /* Wrap ring */ + hmp->rx_ring[entry].status_n_length = + cpu_to_le32(DescOwn|DescEndPacket|DescEndRing|DescIntr | hmp->rx_buf_sz); + else + hmp->rx_ring[entry].status_n_length = + cpu_to_le32(DescOwn|DescEndPacket|DescIntr | hmp->rx_buf_sz); + } + + /* Restart Rx engine if stopped. */ + writew(1, dev->base_addr + RxCmd); + return 0; +} + +/* This is more properly named "uncommon interrupt events", as it covers more + than just errors. */ +static void hamachi_error(struct net_device *dev, int intr_status) +{ + long ioaddr = dev->base_addr; + struct hamachi_private *hmp = (struct hamachi_private *)dev->priv; + + if (intr_status & (LinkChange|NegotiationChange)) { + if (hmp->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO "%s: Link changed: AutoNegotiation Ctrl" + " %4.4x, Status %4.4x %4.4x Intr status %4.4x.\n", + dev->name, (int)readw(ioaddr + 0x0E0), + (int)readw(ioaddr + 0x0E2), + (int)readw(ioaddr + ANLinkPartnerAbility), + (int)readl(ioaddr + IntrStatus)); + if (readw(ioaddr + ANStatus) & 0x20) { + writeb(0x01, ioaddr + LEDCtrl); + netif_link_up(dev); + } else { + writeb(0x03, ioaddr + LEDCtrl); + netif_link_down(dev); + } + } + if (intr_status & StatsMax) { + hamachi_get_stats(dev); + /* Read the overflow bits to clear. */ + readl(ioaddr + 0x36C); + readl(ioaddr + 0x3F0); + } + if ((intr_status & ~(LinkChange|StatsMax|NegotiationChange)) + && (hmp->msg_level & NETIF_MSG_DRV)) + printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n", + dev->name, intr_status); + /* Hmmmmm, it's not clear how to recover from PCI faults. */ + if (intr_status & (IntrTxPCIErr | IntrTxPCIFault)) + hmp->stats.tx_fifo_errors++; + if (intr_status & (IntrRxPCIErr | IntrRxPCIFault)) + hmp->stats.rx_fifo_errors++; +} + +static int hamachi_close(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct hamachi_private *hmp = (struct hamachi_private *)dev->priv; + int i; + + netif_stop_tx_queue(dev); + + if (hmp->msg_level & NETIF_MSG_IFDOWN) { + printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %4.4x " + "Rx %4.4x Int %2.2x.\n", + dev->name, (int)readw(ioaddr + TxStatus), + (int)readw(ioaddr + RxStatus), (int)readl(ioaddr + IntrStatus)); + printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", + dev->name, hmp->cur_tx, hmp->dirty_tx, hmp->cur_rx, + hmp->dirty_rx); + } + + /* Disable interrupts by clearing the interrupt mask. */ + writel(0x0000, ioaddr + InterruptEnable); + + /* Stop the chip's Tx and Rx processes. */ + writel(2, ioaddr + RxCmd); + writew(2, ioaddr + TxCmd); + + del_timer(&hmp->timer); + +#ifdef __i386__ + if (hmp->msg_level & NETIF_MSG_IFDOWN) { + printk("\n"KERN_DEBUG" Tx ring at %8.8x:\n", + (int)virt_to_bus(hmp->tx_ring)); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" %c #%d desc. %8.8x %8.8x.\n", + readl(ioaddr + TxCurPtr) == (long)&hmp->tx_ring[i] ? '>' : ' ', + i, hmp->tx_ring[i].status_n_length, hmp->tx_ring[i].addr); + printk("\n"KERN_DEBUG " Rx ring %8.8x:\n", + (int)virt_to_bus(hmp->rx_ring)); + for (i = 0; i < RX_RING_SIZE; i++) { + printk(KERN_DEBUG " %c #%d desc. %8.8x %8.8x\n", + readl(ioaddr + RxCurPtr) == (long)&hmp->rx_ring[i] ? '>' : ' ', + i, hmp->rx_ring[i].status_n_length, hmp->rx_ring[i].addr); + if (*(u8*)hmp->rx_ring[i].addr != 0x69) { + int j; + for (j = 0; j < 0x50; j++) + printk(" %4.4x", ((u16*)hmp->rx_ring[i].addr)[j]); + printk("\n"); + } + } + } +#endif /* __i386__ debugging only */ + + free_irq(dev->irq, dev); + + /* Free all the skbuffs in the Rx queue. */ + for (i = 0; i < RX_RING_SIZE; i++) { + hmp->rx_ring[i].status_n_length = 0; + hmp->rx_ring[i].addr = 0xBADF00D0; /* An invalid address. */ + if (hmp->rx_skbuff[i]) { +#if LINUX_VERSION_CODE < 0x20100 + hmp->rx_skbuff[i]->free = 1; +#endif + dev_free_skb(hmp->rx_skbuff[i]); + } + hmp->rx_skbuff[i] = 0; + } + for (i = 0; i < TX_RING_SIZE; i++) { + if (hmp->tx_skbuff[i]) + dev_free_skb(hmp->tx_skbuff[i]); + hmp->tx_skbuff[i] = 0; + } + + writeb(0x00, ioaddr + LEDCtrl); + + MOD_DEC_USE_COUNT; + + return 0; +} + +static struct net_device_stats *hamachi_get_stats(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct hamachi_private *hmp = (struct hamachi_private *)dev->priv; + + /* We should lock this segment of code for SMP eventually, although + the vulnerability window is very small and statistics are + non-critical. */ +#if LINUX_VERSION_CODE >= 0x20119 + hmp->stats.rx_bytes += readl(ioaddr + 0x330); /* Total Uni+Brd+Multi */ + hmp->stats.tx_bytes += readl(ioaddr + 0x3B0); /* Total Uni+Brd+Multi */ +#endif + hmp->stats.multicast += readl(ioaddr + 0x320); /* Multicast Rx */ + + hmp->stats.rx_length_errors += readl(ioaddr + 0x368); /* Over+Undersized */ + hmp->stats.rx_over_errors += readl(ioaddr + 0x35C); /* Jabber */ + hmp->stats.rx_crc_errors += readl(ioaddr + 0x360); + hmp->stats.rx_frame_errors += readl(ioaddr + 0x364); /* Symbol Errs */ + hmp->stats.rx_missed_errors += readl(ioaddr + 0x36C); /* Dropped */ + + return &hmp->stats; +} + +static void set_rx_mode(struct net_device *dev) +{ + struct hamachi_private *np = (void *)dev->priv; + long ioaddr = dev->base_addr; + int new_rx_mode; + + if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ + /* Unconditionally log net taps. */ + printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); + new_rx_mode = 0x000F; + } else if (dev->mc_count > np->multicast_filter_limit || + (dev->flags & IFF_ALLMULTI)) { + /* Too many to match, or accept all multicasts. */ + new_rx_mode = 0x000B; + } else if (dev->mc_count > 0) { /* Must use the CAM filter. */ + struct dev_mc_list *mclist; + int i; + for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; + i++, mclist = mclist->next) { + writel(*(u32*)(mclist->dmi_addr), ioaddr + 0x100 + i*8); + writel(0x20000 | (*(u16*)&mclist->dmi_addr[4]), + ioaddr + 0x104 + i*8); + } + /* Clear remaining entries. */ + for (; i < 64; i++) + writel(0, ioaddr + 0x104 + i*8); + new_rx_mode = 0x0003; + } else { /* Normal, unicast/broadcast-only mode. */ + new_rx_mode = 0x0001; + } + if (np->rx_mode != new_rx_mode) { + np->rx_mode = new_rx_mode; + writew(new_rx_mode, ioaddr + AddrMode); + } +} + +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct hamachi_private *np = (void *)dev->priv; + long ioaddr = dev->base_addr; + u16 *data = (u16 *)&rq->ifr_data; + u32 *data32 = (void *)&rq->ifr_data; + + switch(cmd) { + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ + data[0] = np->phys[0] & 0x1f; + /* Fall Through */ + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + data[3] = mdio_read(ioaddr, data[0] & 0x1f, data[1] & 0x1f); + return 0; + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + /* We are always full duplex. Skip recording the advertised value. */ + mdio_write(ioaddr, data[0] & 0x1f, data[1] & 0x1f, data[2]); + return 0; + case SIOCGPARAMS: + data32[0] = np->msg_level; + data32[1] = np->multicast_filter_limit; + data32[2] = np->max_interrupt_work; + data32[3] = np->rx_copybreak; + return 0; + case SIOCSPARAMS: { + /* Set rx,tx intr params, from Eric Kasten. */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + np->msg_level = data32[0]; + np->max_interrupt_work = data32[2]; + writel(data32[1], dev->base_addr + TxIntrCtrl); + writel(data32[3], dev->base_addr + RxIntrCtrl); + printk(KERN_INFO "%s: Set interrupt mitigate paramters tx %08x, " + "rx %08x.\n", dev->name, + (int) readl(dev->base_addr + TxIntrCtrl), + (int) readl(dev->base_addr + RxIntrCtrl)); + return 0; + } + default: + return -EOPNOTSUPP; + } +} + +#ifdef HAVE_CHANGE_MTU +static int change_mtu(struct net_device *dev, int new_mtu) +{ + if ((new_mtu < 68) || (new_mtu > 1536)) + return -EINVAL; + if (netif_running(dev)) + return -EBUSY; + printk(KERN_NOTICE "%s: Changing MTU to %d.\n", dev->name, new_mtu); + dev->mtu = new_mtu; + return 0; +} +#endif + + +#ifdef MODULE +int init_module(void) +{ + if (debug >= NETIF_MSG_DRV) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return pci_drv_register(&hamachi_drv_id, NULL); +} + +void cleanup_module(void) +{ + struct net_device *next_dev; + + pci_drv_unregister(&hamachi_drv_id); + + /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ + while (root_hamachi_dev) { + struct hamachi_private *hmp = (void *)(root_hamachi_dev->priv); + unregister_netdev(root_hamachi_dev); + iounmap((char *)root_hamachi_dev->base_addr); + next_dev = hmp->next_module; + if (hmp->priv_addr) + kfree(hmp->priv_addr); + kfree(root_hamachi_dev); + root_hamachi_dev = next_dev; + } +} + +#endif /* MODULE */ + +/* + * Local variables: + * compile-command: "make KERNVER=`uname -r` hamachi.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c hamachi.c" + * simple-compile-command: "gcc -DMODULE -O6 -c hamachi.c" + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ diff --git a/linux/src/drivers/net/intel-gige.c b/linux/src/drivers/net/intel-gige.c new file mode 100644 index 0000000..5884ffb --- /dev/null +++ b/linux/src/drivers/net/intel-gige.c @@ -0,0 +1,1450 @@ +/* intel-gige.c: A Linux device driver for Intel Gigabit Ethernet adapters. */ +/* + Written 2000-2002 by Donald Becker. + Copyright Scyld Computing Corporation. + + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + You should have received a copy of the GPL with this file. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. + + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 410 Severn Ave., Suite 210 + Annapolis MD 21403 + + Support information and updates available at + http://www.scyld.com/network/ethernet.html +*/ + +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"intel-gige.c:v0.14 11/17/2002 Written by Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/network/ethernet.html\n"; + +/* Automatically extracted configuration info: +probe-func: igige_probe +config-in: tristate 'Intel PCI Gigabit Ethernet support' CONFIG_IGIGE + +c-help-name: Intel PCI Gigabit Ethernet support +c-help-symbol: CONFIG_IGIGE +c-help: This driver is for the Intel PCI Gigabit Ethernet +c-help: adapter series. +c-help: More specific information and updates are available from +c-help: http://www.scyld.com/network/drivers.html +*/ + +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ + +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; + +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ +static int max_interrupt_work = 20; + +/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). + This chip has a 16 element perfect filter, and an unusual 4096 bit + hash filter based directly on address bits, not the Ethernet CRC. + It is costly to recalculate a large, frequently changing table. + However even a large table may useful in some nearly-static environments. +*/ +static int multicast_filter_limit = 15; + +/* Set the copy breakpoint for the copy-only-tiny-frames scheme. + Setting to > 1518 effectively disables this feature. */ +static int rx_copybreak = 0; + +/* Used to pass the media type, etc. + The media type is passed in 'options[]'. The full_duplex[] table only + allows the duplex to be forced on, implicitly disabling autonegotiation. + Setting the entry to zero still allows a link to autonegotiate to full + duplex. +*/ +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; + +/* The delay before announcing a Rx or Tx has completed. */ +static int rx_intr_holdoff = 0; +static int tx_intr_holdoff = 128; + +/* Operational parameters that are set at compile time. */ + +/* Keep the ring sizes a power of two to avoid divides. + The compiler will convert <unsigned>'%'<2^N> into a bit mask. + Making the Tx ring too large decreases the effectiveness of channel + bonding and packet priority. + There are no ill effects from too-large receive rings. */ +#if ! defined(final_version) /* Stress the driver. */ +#define TX_RING_SIZE 8 +#define TX_QUEUE_LEN 5 +#define RX_RING_SIZE 4 +#else +#define TX_RING_SIZE 16 +#define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */ +#define RX_RING_SIZE 32 +#endif + +/* Operational parameters that usually are not changed. */ +/* Time in jiffies before concluding the transmitter is hung. */ +#define TX_TIMEOUT (6*HZ) + +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. This is not a limit, + but a way to keep a consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 + +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif + +/* Include files, designed to support most kernel versions 2.0.0 and later. */ +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + +#include <linux/version.h> +#if defined(MODVERSIONS) +#include <linux/modversions.h> +#endif +#include <linux/module.h> + +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else +#include <linux/malloc.h> +#endif +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <asm/processor.h> /* Processor type for cache alignment. */ +#include <asm/bitops.h> +#include <asm/io.h> + +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif + +/* Condensed operations for readability. */ +#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) +#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) + +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif + +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); +MODULE_DESCRIPTION("Intel Gigabit Ethernet driver"); +MODULE_LICENSE("GPL"); +MODULE_PARM(debug, "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(rx_copybreak, "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(multicast_filter_limit, "i"); +MODULE_PARM(max_interrupt_work, "i"); +MODULE_PARM_DESC(debug, "Driver message level (0-31)"); +MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex"); +MODULE_PARM_DESC(max_interrupt_work, + "Driver maximum events handled per interrupt"); +MODULE_PARM_DESC(full_duplex, + "Non-zero to set forced full duplex (deprecated)."); +MODULE_PARM_DESC(rx_copybreak, + "Breakpoint in bytes for copy-only-tiny-frames"); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast addresses before switching to Rx-all-multicast"); + +/* + Theory of Operation + +I. Board Compatibility + +This driver is for the Intel Gigabit Ethernet adapter. + +II. Board-specific settings + +III. Driver operation + +IIIa. Descriptor Rings + +This driver uses two statically allocated fixed-size descriptor arrays +treated as rings by the hardware. The ring sizes are set at compile time +by RX/TX_RING_SIZE. + +IIIb/c. Transmit/Receive Structure + +This driver uses a zero-copy receive and transmit scheme. +The driver allocates full frame size skbuffs for the Rx ring buffers at +open() time and passes the skb->data field to the chip as receive data +buffers. When an incoming frame is less than RX_COPYBREAK bytes long, +a fresh skbuff is allocated and the frame is copied to the new skbuff. +When the incoming frame is larger, the skbuff is passed directly up the +protocol stack. Buffers consumed this way are replaced by newly allocated +skbuffs in a later phase of receives. + +The RX_COPYBREAK value is chosen to trade-off the memory wasted by +using a full-sized skbuff for small frames vs. the copying costs of larger +frames. New boards are typically used in generously configured machines +and the underfilled buffers have negligible impact compared to the benefit of +a single allocation size, so the default value of zero results in never +copying packets. When copying is done, the cost is usually mitigated by using +a combined copy/checksum routine. Copying also preloads the cache, which is +most useful with small frames. + +A subtle aspect of the operation is that the IP header at offset 14 in an +ethernet frame isn't longword aligned for further processing. +When unaligned buffers are permitted by the hardware (and always on copies) +frames are put into the skbuff at an offset of "+2", 16-byte aligning +the IP header. + +IIId. Synchronization + +The driver runs as two independent, single-threaded flows of control. +One is the send-packet routine which is single-threaded by the queue +layer. The other thread is the interrupt handler, which is single +threaded by the hardware and interrupt handling software. + +The send packet thread has partial control over the Tx ring. At the +start of a transmit attempt netif_pause_tx_queue(dev) is called. If the +transmit attempt fills the Tx queue controlled by the chip, the driver +informs the software queue layer by not calling +netif_unpause_tx_queue(dev) on exit. + +The interrupt handler has exclusive control over the Rx ring and records stats +from the Tx ring. After reaping the stats, it marks the Tx queue entry as +empty by incrementing the dirty_tx mark. Iff the 'lp->tx_full' flag is set, it +clears both the tx_full and tbusy flags. + +IIId. SMP semantics + +The following are serialized with respect to each other via the "xmit_lock". + dev->hard_start_xmit() Transmit a packet + dev->tx_timeout() Transmit watchdog for stuck Tx + dev->set_multicast_list() Set the recieve filter. +Note: The Tx timeout watchdog code is implemented by the timer routine in +kernels up to 2.2.*. In 2.4.* and later the timeout code is part of the +driver interface. + +The following fall under the global kernel lock. The module will not be +unloaded during the call, unless a call with a potential reschedule e.g. +kmalloc() is called. No other synchronization assertion is made. + dev->open() + dev->do_ioctl() + dev->get_stats() +Caution: The lock for dev->open() is commonly broken with request_irq() or +kmalloc(). It is best to avoid any lock-breaking call in do_ioctl() and +get_stats(), or additional module locking code must be implemented. + +The following is self-serialized (no simultaneous entry) + An handler registered with request_irq(). + +IV. Notes + +IVb. References + +Intel has also released a Linux driver for this product, "e1000". + +IVc. Errata + +*/ + + + +static void *igige_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +static int netdev_pwr_event(void *dev_instance, int event); +enum chip_capability_flags { CanHaveMII=1, }; +#define PCI_IOTYPE () + +static struct pci_id_info pci_id_tbl[] = { + {"Intel Gigabit Ethernet adapter", {0x10008086, 0xffffffff, }, + PCI_USES_MASTER | PCI_USES_MEM | PCI_ADDR0, 0x1ffff, 0}, + {0,}, /* 0 terminated list. */ +}; + +struct drv_id_info igige_drv_id = { + "intel-gige", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, + igige_probe1, netdev_pwr_event }; + +/* This hardware only has a PCI memory space BAR, not I/O space. */ +#ifdef USE_IO_OPS +#error This driver only works with PCI memory space access. +#endif + +/* Offsets to the device registers. +*/ +enum register_offsets { + ChipCtrl=0x00, ChipStatus=0x08, EECtrl=0x10, + FlowCtrlAddrLo=0x028, FlowCtrlAddrHi=0x02c, FlowCtrlType=0x030, + VLANetherType=0x38, + + RxAddrCAM=0x040, + IntrStatus=0x0C0, /* Interrupt, Clear on Read, AKA ICR */ + IntrEnable=0x0D0, /* Set enable mask when '1' AKA IMS */ + IntrDisable=0x0D8, /* Clear enable mask when '1' */ + + RxControl=0x100, + RxQ0IntrDelay=0x108, /* Rx list #0 interrupt delay timer. */ + RxRingPtr=0x110, /* Rx Desc. list #0 base address, 64bits */ + RxRingLen=0x118, /* Num bytes of Rx descriptors in ring. */ + RxDescHead=0x120, + RxDescTail=0x128, + + RxQ1IntrDelay=0x130, /* Rx list #1 interrupt delay timer. */ + RxRing1Ptr=0x138, /* Rx Desc. list #1 base address, 64bits */ + RxRing1Len=0x140, /* Num bytes of Rx descriptors in ring. */ + RxDesc1Head=0x148, + RxDesc1Tail=0x150, + + FlowCtrlTimer=0x170, FlowCtrlThrshHi=0x160, FlowCtrlThrshLo=0x168, + TxConfigReg=0x178, + RxConfigReg=0x180, + MulticastArray=0x200, + + TxControl=0x400, + TxQState=0x408, /* 64 bit queue state */ + TxIPG=0x410, /* Inter-Packet Gap */ + TxRingPtr=0x420, TxRingLen=0x428, + TxDescHead=0x430, TxDescTail=0x438, TxIntrDelay=0x440, + + RxCRCErrs=0x4000, RxMissed=0x4010, + + TxStatus=0x408, + RxStatus=0x180, +}; + +/* Bits in the interrupt status/mask registers. */ +enum intr_status_bits { + IntrTxDone=0x0001, /* Tx packet queued */ + IntrLinkChange=0x0004, /* Link Status Change */ + IntrRxSErr=0x0008, /* Rx Symbol/Sequence error */ + IntrRxEmpty=0x0010, /* Rx queue 0 Empty */ + IntrRxQ1Empty=0x0020, /* Rx queue 1 Empty */ + IntrRxDone=0x0080, /* Rx Done, Queue 0*/ + IntrRxDoneQ1=0x0100, /* Rx Done, Queue 0*/ + IntrPCIErr=0x0200, /* PCI Bus Error */ + + IntrTxEmpty=0x0002, /* Guess */ + StatsMax=0x1000, /* Unknown */ +}; + +/* Bits in the RxFilterMode register. */ +enum rx_mode_bits { + RxCtrlReset=0x01, RxCtrlEnable=0x02, RxCtrlAllUnicast=0x08, + RxCtrlAllMulticast=0x10, + RxCtrlLoopback=0xC0, /* We never configure loopback */ + RxCtrlAcceptBroadcast=0x8000, + /* Aliased names.*/ + AcceptAllPhys=0x08, AcceptAllMulticast=0x10, AcceptBroadcast=0x8000, + AcceptMyPhys=0, + AcceptMulticast=0, +}; + +/* The Rx and Tx buffer descriptors. */ +struct rx_desc { + u32 buf_addr; + u32 buf_addr_hi; + u32 csum_length; /* Checksum and length */ + u32 status; /* Errors and status. */ +}; + +struct tx_desc { + u32 buf_addr; + u32 buf_addr_hi; + u32 cmd_length; + u32 status; /* And errors */ +}; + +/* Bits in tx_desc.cmd_length */ +enum tx_cmd_bits { + TxDescEndPacket=0x02000000, TxCmdIntrDelay=0x80000000, + TxCmdAddCRC=0x02000000, TxCmdDoTx=0x13000000, +}; +enum tx_status_bits { + TxDescDone=0x0001, TxDescEndPkt=0x0002, +}; + +/* Bits in tx_desc.status */ +enum rx_status_bits { + RxDescDone=0x0001, RxDescEndPkt=0x0002, +}; + + +#define PRIV_ALIGN 15 /* Required alignment mask */ +/* Use __attribute__((aligned (L1_CACHE_BYTES))) to maintain alignment + within the structure. */ +struct netdev_private { + struct net_device *next_module; /* Link for devices of this type. */ + void *priv_addr; /* Unaligned address for kfree */ + const char *product_name; + /* The addresses of receive-in-place skbuffs. */ + struct sk_buff* rx_skbuff[RX_RING_SIZE]; + /* The saved address of a sent-in-place packet/buffer, for later free(). */ + struct sk_buff* tx_skbuff[TX_RING_SIZE]; + struct net_device_stats stats; + struct timer_list timer; /* Media monitoring timer. */ + /* Keep frequently used values adjacent for cache effect. */ + int msg_level; + int chip_id, drv_flags; + struct pci_dev *pci_dev; + int max_interrupt_work; + int intr_enable; + long in_interrupt; /* Word-long for SMP locks. */ + + struct rx_desc *rx_ring; + struct rx_desc *rx_head_desc; + unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ + unsigned int rx_buf_sz; /* Based on MTU+slack. */ + int rx_copybreak; + + struct tx_desc *tx_ring; + unsigned int cur_tx, dirty_tx; + unsigned int tx_full:1; /* The Tx queue is full. */ + + unsigned int rx_mode; + unsigned int tx_config; + int multicast_filter_limit; + /* These values track the transceiver/media in use. */ + unsigned int full_duplex:1; /* Full-duplex operation requested. */ + unsigned int duplex_lock:1; + unsigned int medialock:1; /* Do not sense media. */ + unsigned int default_port; /* Last dev->if_port value. */ +}; + +static int eeprom_read(long ioaddr, int location); +static int netdev_open(struct net_device *dev); +static int change_mtu(struct net_device *dev, int new_mtu); +static void check_duplex(struct net_device *dev); +static void netdev_timer(unsigned long data); +static void tx_timeout(struct net_device *dev); +static void init_ring(struct net_device *dev); +static int start_tx(struct sk_buff *skb, struct net_device *dev); +static void intr_handler(int irq, void *dev_instance, struct pt_regs *regs); +static void netdev_error(struct net_device *dev, int intr_status); +static int netdev_rx(struct net_device *dev); +static void netdev_error(struct net_device *dev, int intr_status); +static void set_rx_mode(struct net_device *dev); +static struct net_device_stats *get_stats(struct net_device *dev); +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +static int netdev_close(struct net_device *dev); + + + +/* A list of our installed devices, for removing the driver module. */ +static struct net_device *root_net_dev = NULL; + +#ifndef MODULE +int igige_probe(struct net_device *dev) +{ + if (pci_drv_register(&igige_drv_id, dev) < 0) + return -ENODEV; + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return 0; +} +#endif + +static void *igige_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int card_idx) +{ + struct net_device *dev; + struct netdev_private *np; + void *priv_mem; + int i, option = card_idx < MAX_UNITS ? options[card_idx] : 0; + + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; + + printk(KERN_INFO "%s: %s at 0x%lx, ", + dev->name, pci_id_tbl[chip_idx].name, ioaddr); + + for (i = 0; i < 3; i++) + ((u16*)dev->dev_addr)[i] = le16_to_cpu(eeprom_read(ioaddr, i)); + for (i = 0; i < 5; i++) + printk("%2.2x:", dev->dev_addr[i]); + printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq); + + /* Make certain elements e.g. descriptor lists are aligned. */ + priv_mem = kmalloc(sizeof(*np) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; + + /* Do bogusness checks before this point. + We do a request_region() only to register /proc/ioports info. */ + request_region(ioaddr, pci_id_tbl[chip_idx].io_size, dev->name); + + /* Reset the chip to erase previous misconfiguration. */ + writel(0x04000000, ioaddr + ChipCtrl); + + dev->base_addr = ioaddr; + dev->irq = irq; + + dev->priv = np = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); + memset(np, 0, sizeof(*np)); + np->priv_addr = priv_mem; + + np->next_module = root_net_dev; + root_net_dev = dev; + + np->pci_dev = pdev; + np->chip_id = chip_idx; + np->drv_flags = pci_id_tbl[chip_idx].drv_flags; + np->msg_level = (1 << debug) - 1; + np->rx_copybreak = rx_copybreak; + np->max_interrupt_work = max_interrupt_work; + np->multicast_filter_limit = multicast_filter_limit; + + if (dev->mem_start) + option = dev->mem_start; + + /* The lower four bits are the media type. */ + if (option > 0) { + if (option & 0x2220) + np->full_duplex = 1; + np->default_port = option & 0x3330; + if (np->default_port) + np->medialock = 1; + } + if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) + np->full_duplex = 1; + + if (np->full_duplex) + np->duplex_lock = 1; + +#if ! defined(final_version) /* Dump the EEPROM contents during development. */ + if (np->msg_level & NETIF_MSG_MISC) { + int sum = 0; + for (i = 0; i < 0x40; i++) { + int eeval = eeprom_read(ioaddr, i); + printk("%4.4x%s", eeval, i % 16 != 15 ? " " : "\n"); + sum += eeval; + } + printk(KERN_DEBUG "%s: EEPROM checksum %4.4X (expected value 0xBABA).\n", + dev->name, sum & 0xffff); + } +#endif + + /* The chip-specific entries in the device structure. */ + dev->open = &netdev_open; + dev->hard_start_xmit = &start_tx; + dev->stop = &netdev_close; + dev->get_stats = &get_stats; + dev->set_multicast_list = &set_rx_mode; + dev->do_ioctl = &mii_ioctl; + dev->change_mtu = &change_mtu; + + /* Turn off VLAN and clear the VLAN filter. */ + writel(0x04000000, ioaddr + VLANetherType); + for (i = 0x600; i < 0x800; i+=4) + writel(0, ioaddr + i); + np->tx_config = 0x80000020; + writel(np->tx_config, ioaddr + TxConfigReg); + { + int eeword10 = eeprom_read(ioaddr, 10); + writel(((eeword10 & 0x01e0) << 17) | ((eeword10 & 0x0010) << 3), + ioaddr + ChipCtrl); + } + + return dev; +} + + +/* Read the EEPROM interface with a serial bit streams generated by the + host processor. + The example below is for the common 93c46 EEPROM, 64 16 bit words. */ + +/* Delay between EEPROM clock transitions. + The effectivly flushes the write cache to prevent quick double-writes. +*/ +#define eeprom_delay(ee_addr) readl(ee_addr) + +enum EEPROM_Ctrl_Bits { + EE_ShiftClk=0x01, EE_ChipSelect=0x02, EE_DataIn=0x08, EE_DataOut=0x04, +}; +#define EE_Write0 (EE_ChipSelect) +#define EE_Write1 (EE_ChipSelect | EE_DataOut) + +/* The EEPROM commands include the alway-set leading bit. */ +enum EEPROM_Cmds { EE_WriteCmd=5, EE_ReadCmd=6, EE_EraseCmd=7, }; + +static int eeprom_read(long addr, int location) +{ + int i; + int retval = 0; + long ee_addr = addr + EECtrl; + int read_cmd = ((EE_ReadCmd<<6) | location) << 16 ; + int cmd_len = 2+6+16; + u32 baseval = readl(ee_addr) & ~0x0f; + + writel(EE_Write0 | baseval, ee_addr); + + /* Shift the read command bits out. */ + for (i = cmd_len; i >= 0; i--) { + int dataval = baseval | + ((read_cmd & (1 << i)) ? EE_Write1 : EE_Write0); + writel(dataval, ee_addr); + eeprom_delay(ee_addr); + writel(dataval | EE_ShiftClk, ee_addr); + eeprom_delay(ee_addr); + retval = (retval << 1) | ((readl(ee_addr) & EE_DataIn) ? 1 : 0); + } + + /* Terminate the EEPROM access. */ + writel(baseval | EE_Write0, ee_addr); + writel(baseval & ~EE_ChipSelect, ee_addr); + return retval; +} + + + +static int netdev_open(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + /* Some chips may need to be reset. */ + + MOD_INC_USE_COUNT; + + if (np->tx_ring == 0) + np->tx_ring = (void *)get_free_page(GFP_KERNEL); + if (np->tx_ring == 0) + return -ENOMEM; + if (np->rx_ring == 0) + np->rx_ring = (void *)get_free_page(GFP_KERNEL); + if (np->tx_ring == 0) { + free_page((long)np->tx_ring); + return -ENOMEM; + } + + /* Note that both request_irq() and init_ring() call kmalloc(), which + break the global kernel lock protecting this routine. */ + if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; + return -EAGAIN; + } + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: netdev_open() irq %d.\n", + dev->name, dev->irq); + + init_ring(dev); + + writel(0, ioaddr + RxControl); + writel(virt_to_bus(np->rx_ring), ioaddr + RxRingPtr); +#if ADDRLEN == 64 + writel(virt_to_bus(np->rx_ring) >> 32, ioaddr + RxRingPtr + 4); +#else + writel(0, ioaddr + RxRingPtr + 4); +#endif + + writel(RX_RING_SIZE * sizeof(struct rx_desc), ioaddr + RxRingLen); + writel(0x80000000 | rx_intr_holdoff, ioaddr + RxQ0IntrDelay); + writel(0, ioaddr + RxDescHead); + writel(np->dirty_rx + RX_RING_SIZE, ioaddr + RxDescTail); + + /* Zero the unused Rx ring #1. */ + writel(0, ioaddr + RxQ1IntrDelay); + writel(0, ioaddr + RxRing1Ptr); + writel(0, ioaddr + RxRing1Ptr + 4); + writel(0, ioaddr + RxRing1Len); + writel(0, ioaddr + RxDesc1Head); + writel(0, ioaddr + RxDesc1Tail); + + /* Use 0x002000FA for half duplex. */ + writel(0x000400FA, ioaddr + TxControl); + + writel(virt_to_bus(np->tx_ring), ioaddr + TxRingPtr); +#if ADDRLEN == 64 + writel(virt_to_bus(np->tx_ring) >> 32, ioaddr + TxRingPtr + 4); +#else + writel(0, ioaddr + TxRingPtr + 4); +#endif + + writel(TX_RING_SIZE * sizeof(struct tx_desc), ioaddr + TxRingLen); + writel(0, ioaddr + TxDescHead); + writel(0, ioaddr + TxDescTail); + writel(0, ioaddr + TxQState); + writel(0, ioaddr + TxQState + 4); + + /* Set IPG register with Ethernet standard values. */ + writel(0x00A0080A, ioaddr + TxIPG); + /* The delay before announcing a Tx has completed. */ + writel(tx_intr_holdoff, ioaddr + TxIntrDelay); + + writel(((u32*)dev->dev_addr)[0], ioaddr + RxAddrCAM); + writel(0x80000000 | ((((u32*)dev->dev_addr)[1]) & 0xffff), + ioaddr + RxAddrCAM + 4); + + /* Initialize other registers. */ + /* Configure the PCI bus bursts and FIFO thresholds. */ + + if (dev->if_port == 0) + dev->if_port = np->default_port; + + np->in_interrupt = 0; + + np->rx_mode = RxCtrlEnable; + set_rx_mode(dev); + + /* Tx mode */ + np->tx_config = 0x80000020; + writel(np->tx_config, ioaddr + TxConfigReg); + + /* Flow control */ + writel(0x00C28001, ioaddr + FlowCtrlAddrLo); + writel(0x00000100, ioaddr + FlowCtrlAddrHi); + writel(0x8808, ioaddr + FlowCtrlType); + writel(0x0100, ioaddr + FlowCtrlTimer); + writel(0x8000, ioaddr + FlowCtrlThrshHi); + writel(0x4000, ioaddr + FlowCtrlThrshLo); + + netif_start_tx_queue(dev); + + /* Enable interrupts by setting the interrupt mask. */ + writel(IntrTxDone | IntrLinkChange | IntrRxDone | IntrPCIErr + | IntrRxEmpty | IntrRxSErr, ioaddr + IntrEnable); + + /* writel(1, dev->base_addr + RxCmd);*/ + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Done netdev_open(), status: %x Rx %x Tx %x.\n", + dev->name, (int)readl(ioaddr + ChipStatus), + (int)readl(ioaddr + RxStatus), (int)readl(ioaddr + TxStatus)); + + /* Set the timer to check for link beat. */ + init_timer(&np->timer); + np->timer.expires = jiffies + 3*HZ; + np->timer.data = (unsigned long)dev; + np->timer.function = &netdev_timer; /* timer handler */ + add_timer(&np->timer); + + return 0; +} + +/* Update for jumbo frames... + Changing the MTU while active is not allowed. + */ +static int change_mtu(struct net_device *dev, int new_mtu) +{ + if ((new_mtu < 68) || (new_mtu > 1500)) + return -EINVAL; + if (netif_running(dev)) + return -EBUSY; + dev->mtu = new_mtu; + return 0; +} + +static void check_duplex(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int chip_ctrl = readl(ioaddr + ChipCtrl); + int rx_cfg = readl(ioaddr + RxConfigReg); + int tx_cfg = readl(ioaddr + TxConfigReg); +#if 0 + int chip_status = readl(ioaddr + ChipStatus); +#endif + + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Link changed status. Ctrl %x rxcfg %8.8x " + "txcfg %8.8x.\n", + dev->name, chip_ctrl, rx_cfg, tx_cfg); + if (np->medialock) { + if (np->full_duplex) + ; + } + /* writew(new_tx_mode, ioaddr + TxMode); */ +} + +static void netdev_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int next_tick = 10*HZ; + + if (np->msg_level & NETIF_MSG_TIMER) { + printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x, " + "Tx %x Rx %x.\n", + dev->name, (int)readl(ioaddr + ChipStatus), + (int)readl(ioaddr + TxStatus), (int)readl(ioaddr + RxStatus)); + } + /* This will either have a small false-trigger window or will not catch + tbusy incorrectly set when the queue is empty. */ + if ((jiffies - dev->trans_start) > TX_TIMEOUT && + (np->cur_tx - np->dirty_tx > 0 || + netif_queue_paused(dev)) ) { + tx_timeout(dev); + } + check_duplex(dev); + np->timer.expires = jiffies + next_tick; + add_timer(&np->timer); +} + +static void tx_timeout(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + printk(KERN_WARNING "%s: Transmit timed out, status %8.8x," + " resetting...\n", dev->name, (int)readl(ioaddr + ChipStatus)); + +#ifndef __alpha__ + if (np->msg_level & NETIF_MSG_TX_ERR) { + int i; + printk(KERN_DEBUG " Tx registers: "); + for (i = 0x400; i < 0x444; i += 8) + printk(" %8.8x", (int)readl(ioaddr + i)); + printk("\n"KERN_DEBUG " Rx ring %p: ", np->rx_ring); + for (i = 0; i < RX_RING_SIZE; i++) + printk(" %8.8x", (unsigned int)np->rx_ring[i].status); + printk("\n"KERN_DEBUG" Tx ring %p: ", np->tx_ring); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" %4.4x", np->tx_ring[i].status); + printk("\n"); + } +#endif + + /* Perhaps we should reinitialize the hardware here. */ + dev->if_port = 0; + /* Stop and restart the chip's Tx processes . */ + + /* Trigger an immediate transmit demand. */ + + dev->trans_start = jiffies; + np->stats.tx_errors++; + return; +} + + +/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ +static void init_ring(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + np->tx_full = 0; + np->cur_rx = np->cur_tx = 0; + np->dirty_rx = np->dirty_tx = 0; + + np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); + np->rx_head_desc = &np->rx_ring[0]; + + /* Initialize all Rx descriptors. */ + for (i = 0; i < RX_RING_SIZE; i++) { + np->rx_skbuff[i] = 0; + } + + /* The number of ring descriptors is set by the ring length register, + thus the chip does not use 'next_desc' chains. */ + + /* Fill in the Rx buffers. Allocation failures are acceptable. */ + for (i = 0; i < RX_RING_SIZE; i++) { + struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); + np->rx_skbuff[i] = skb; + if (skb == NULL) + break; + skb->dev = dev; /* Mark as being used by this device. */ + skb_reserve(skb, 2); /* 16 byte align the IP header. */ + np->rx_ring[i].buf_addr = virt_to_le32desc(skb->tail); + np->rx_ring[i].buf_addr_hi = 0; + np->rx_ring[i].status = 0; + } + np->dirty_rx = (unsigned int)(i - RX_RING_SIZE); + + for (i = 0; i < TX_RING_SIZE; i++) { + np->tx_skbuff[i] = 0; + np->tx_ring[i].status = 0; + } + return; +} + +static int start_tx(struct sk_buff *skb, struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + unsigned entry; + + /* Block a timer-based transmit from overlapping. This happens when + packets are presumed lost, and we use this check the Tx status. */ + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + tx_timeout(dev); + return 1; + } + + /* Calculate the next Tx descriptor entry. */ + entry = np->cur_tx % TX_RING_SIZE; + + np->tx_skbuff[entry] = skb; + + /* Note: Descriptors may be uncached. Write each field only once. */ + np->tx_ring[entry].buf_addr = virt_to_le32desc(skb->data); + np->tx_ring[entry].buf_addr_hi = 0; + np->tx_ring[entry].cmd_length = cpu_to_le32(TxCmdDoTx | skb->len); + np->tx_ring[entry].status = 0; + + /* Non-CC architectures: explicitly flush descriptor and packet. + cache_flush(np->tx_ring[entry], sizeof np->tx_ring[entry]); + cache_flush(skb->data, skb->len); + */ + + np->cur_tx++; + if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1) { + np->tx_full = 1; + /* Check for a just-cleared queue. */ + if (np->cur_tx - (volatile int)np->dirty_tx < TX_QUEUE_LEN - 2) { + netif_unpause_tx_queue(dev); + np->tx_full = 0; + } else + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); /* Typical path */ + + /* Inform the chip we have another Tx. */ + if (np->msg_level & NETIF_MSG_TX_QUEUED) + printk(KERN_DEBUG "%s: Tx queued to slot %d, desc tail now %d " + "writing %d.\n", + dev->name, entry, (int)readl(dev->base_addr + TxDescTail), + np->cur_tx % TX_RING_SIZE); + writel(np->cur_tx % TX_RING_SIZE, dev->base_addr + TxDescTail); + + dev->trans_start = jiffies; + + if (np->msg_level & NETIF_MSG_TX_QUEUED) { + printk(KERN_DEBUG "%s: Transmit frame #%d (%x) queued in slot %d.\n", + dev->name, np->cur_tx, (int)virt_to_bus(&np->tx_ring[entry]), + entry); + } + return 0; +} + +/* The interrupt handler does all of the Rx thread work and cleans up + after the Tx thread. */ +static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) +{ + struct net_device *dev = (struct net_device *)dev_instance; + struct netdev_private *np; + long ioaddr; + int work_limit; + + ioaddr = dev->base_addr; + np = (struct netdev_private *)dev->priv; + work_limit = np->max_interrupt_work; + +#if defined(__i386__) && LINUX_VERSION_CODE < 0x020300 + /* A lock to prevent simultaneous entry bug on Intel SMP machines. */ + if (test_and_set_bit(0, (void*)&dev->interrupt)) { + printk(KERN_ERR"%s: SMP simultaneous entry of an interrupt handler.\n", + dev->name); + dev->interrupt = 0; /* Avoid halting machine. */ + return; + } +#endif + + do { + u32 intr_status = readl(ioaddr + IntrStatus); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", + dev->name, intr_status); + + if (intr_status == 0 || intr_status == 0xffffffff) + break; + + if (intr_status & IntrRxDone) + netdev_rx(dev); + + for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { + int entry = np->dirty_tx % TX_RING_SIZE; + if (np->tx_ring[entry].status == 0) + break; + if (np->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG "%s: Transmit done, Tx status %8.8x.\n", + dev->name, np->tx_ring[entry].status); + np->stats.tx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + np->stats.tx_bytes += np->tx_skbuff[entry]->len; +#endif + /* Free the original skb. */ + dev_free_skb_irq(np->tx_skbuff[entry]); + np->tx_skbuff[entry] = 0; + } + /* Note the 4 slot hysteresis to mark the queue non-full. */ + if (np->tx_full && np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) { + /* The ring is no longer full, allow new TX entries. */ + np->tx_full = 0; + netif_resume_tx_queue(dev); + } + + /* Abnormal error summary/uncommon events handlers. */ + if (intr_status & (IntrPCIErr | IntrLinkChange | StatsMax)) + netdev_error(dev, intr_status); + + if (--work_limit < 0) { + printk(KERN_WARNING "%s: Too much work at interrupt, " + "status=0x%4.4x.\n", + dev->name, intr_status); + break; + } + } while (1); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", + dev->name, (int)readl(ioaddr + IntrStatus)); + +#if defined(__i386__) && LINUX_VERSION_CODE < 0x020300 + clear_bit(0, (void*)&dev->interrupt); +#endif + return; +} + +/* This routine is logically part of the interrupt handler, but separated + for clarity and better register allocation. */ +static int netdev_rx(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int entry = np->cur_rx % RX_RING_SIZE; + int boguscnt = np->dirty_rx + RX_RING_SIZE - np->cur_rx; + + if (np->msg_level & NETIF_MSG_RX_STATUS) { + printk(KERN_DEBUG " In netdev_rx(), entry %d status %4.4x.\n", + entry, np->rx_ring[entry].status); + } + + /* If EOP is set on the next entry, it's a new packet. Send it up. */ + while (np->rx_head_desc->status & cpu_to_le32(RxDescDone)) { + struct rx_desc *desc = np->rx_head_desc; + u32 desc_status = le32_to_cpu(desc->status); + int data_size = le32_to_cpu(desc->csum_length); + + if (np->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n", + desc_status); + if (--boguscnt < 0) + break; + if ( ! (desc_status & RxDescEndPkt)) { + printk(KERN_WARNING "%s: Oversized Ethernet frame spanned " + "multiple buffers, entry %#x length %d status %4.4x!\n", + dev->name, np->cur_rx, data_size, desc_status); + np->stats.rx_length_errors++; + } else { + struct sk_buff *skb; + /* Reported length should omit the CRC. */ + int pkt_len = (data_size & 0xffff) - 4; + +#ifndef final_version + if (np->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d" + " of %d, bogus_cnt %d.\n", + pkt_len, data_size, boguscnt); +#endif + /* Check if the packet is long enough to accept without copying + to a minimally-sized skbuff. */ + if (pkt_len < np->rx_copybreak + && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { + skb->dev = dev; + skb_reserve(skb, 2); /* 16 byte align the IP header */ +#if HAS_IP_COPYSUM /* Call copy + cksum if available. */ + eth_copy_and_sum(skb, np->rx_skbuff[entry]->tail, pkt_len, 0); + skb_put(skb, pkt_len); +#else + memcpy(skb_put(skb, pkt_len), np->rx_skbuff[entry]->tail, + pkt_len); +#endif + } else { + char *temp = skb_put(skb = np->rx_skbuff[entry], pkt_len); + np->rx_skbuff[entry] = NULL; +#ifndef final_version /* Remove after testing. */ + if (le32desc_to_virt(np->rx_ring[entry].buf_addr) != temp) + printk(KERN_ERR "%s: Internal fault: The skbuff addresses " + "do not match in netdev_rx: %p vs. %p / %p.\n", + dev->name, + le32desc_to_virt(np->rx_ring[entry].buf_addr), + skb->head, temp); +#endif + } +#ifndef final_version /* Remove after testing. */ + /* You will want this info for the initial debug. */ + if (np->msg_level & NETIF_MSG_PKTDATA) + printk(KERN_DEBUG " Rx data %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:" + "%2.2x %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x %2.2x%2.2x " + "%d.%d.%d.%d.\n", + skb->data[0], skb->data[1], skb->data[2], skb->data[3], + skb->data[4], skb->data[5], skb->data[6], skb->data[7], + skb->data[8], skb->data[9], skb->data[10], + skb->data[11], skb->data[12], skb->data[13], + skb->data[14], skb->data[15], skb->data[16], + skb->data[17]); +#endif + skb->protocol = eth_type_trans(skb, dev); + /* Note: checksum -> skb->ip_summed = CHECKSUM_UNNECESSARY; */ + netif_rx(skb); + dev->last_rx = jiffies; + np->stats.rx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + np->stats.rx_bytes += pkt_len; +#endif + } + entry = (++np->cur_rx) % RX_RING_SIZE; + np->rx_head_desc = &np->rx_ring[entry]; + } + + /* Refill the Rx ring buffers. */ + for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) { + struct sk_buff *skb; + entry = np->dirty_rx % RX_RING_SIZE; + if (np->rx_skbuff[entry] == NULL) { + skb = dev_alloc_skb(np->rx_buf_sz); + np->rx_skbuff[entry] = skb; + if (skb == NULL) + break; /* Better luck next round. */ + skb->dev = dev; /* Mark as being used by this device. */ + skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ + np->rx_ring[entry].buf_addr = virt_to_le32desc(skb->tail); + } + np->rx_ring[entry].status = 0; + } + + /* Restart Rx engine if stopped. */ + /* writel(1, dev->base_addr + RxCmd); */ + return 0; +} + +static void netdev_error(struct net_device *dev, int intr_status) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + + if (intr_status & IntrLinkChange) { + int chip_ctrl = readl(ioaddr + ChipCtrl); + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_ERR "%s: Link changed: Autonegotiation on-going.\n", + dev->name); + if (chip_ctrl & 1) + netif_link_up(dev); + else + netif_link_down(dev); + check_duplex(dev); + } + if (intr_status & StatsMax) { + get_stats(dev); + } + if ((intr_status & ~(IntrLinkChange|StatsMax)) + && (np->msg_level & NETIF_MSG_DRV)) + printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n", + dev->name, intr_status); + /* Hmmmmm, it's not clear how to recover from PCI faults. */ + if (intr_status & IntrPCIErr) + np->stats.tx_fifo_errors++; +} + +static struct net_device_stats *get_stats(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + int crc_errs = readl(ioaddr + RxCRCErrs); + + if (crc_errs != 0xffffffff) { + /* We need not lock this segment of code for SMP. + The non-atomic-add vulnerability is very small + and statistics are non-critical. */ + np->stats.rx_crc_errors += readl(ioaddr + RxCRCErrs); + np->stats.rx_missed_errors += readl(ioaddr + RxMissed); + } + + return &np->stats; +} + +/* The little-endian AUTODIN II ethernet CRC calculations. + A big-endian version is also available. + This is slow but compact code. Do not use this routine for bulk data, + use a table-based routine instead. + This is common code and should be moved to net/core/crc.c. + Chips may use the upper or lower CRC bits, and may reverse and/or invert + them. Select the endian-ness that results in minimal calculations. +*/ +static unsigned const ethernet_polynomial_le = 0xedb88320U; +static inline unsigned ether_crc_le(int length, unsigned char *data) +{ + unsigned int crc = 0xffffffff; /* Initial value. */ + while(--length >= 0) { + unsigned char current_octet = *data++; + int bit; + for (bit = 8; --bit >= 0; current_octet >>= 1) { + if ((crc ^ current_octet) & 1) { + crc >>= 1; + crc ^= ethernet_polynomial_le; + } else + crc >>= 1; + } + } + return crc; +} + +static void set_rx_mode(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + u32 new_mc_filter[128]; /* Multicast filter table */ + u32 new_rx_mode = np->rx_mode; + + if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ + /* Unconditionally log net taps. */ + printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); + new_rx_mode |= + RxCtrlAcceptBroadcast | RxCtrlAllMulticast | RxCtrlAllUnicast; + } else if ((dev->mc_count > np->multicast_filter_limit) + || (dev->flags & IFF_ALLMULTI)) { + /* Too many to match, or accept all multicasts. */ + new_rx_mode &= ~RxCtrlAllUnicast; + new_rx_mode |= RxCtrlAcceptBroadcast | RxCtrlAllMulticast; + } else { + struct dev_mc_list *mclist; + int i; + memset(new_mc_filter, 0, sizeof(new_mc_filter)); + for (i = 0, mclist = dev->mc_list; mclist && i < 15; + i++, mclist = mclist->next) { + writel(((u32*)mclist->dmi_addr)[0], ioaddr + RxAddrCAM + 8 + i*8); + writel((((u32*)mclist->dmi_addr)[1] & 0xffff) | 0x80000000, + ioaddr + RxAddrCAM + 12 + i*8); + } + for (; mclist && i < dev->mc_count; i++, mclist = mclist->next) { + set_bit(((u32*)mclist->dmi_addr)[1] & 0xfff, + new_mc_filter); + } + new_rx_mode &= ~RxCtrlAllUnicast | RxCtrlAllMulticast; + new_rx_mode |= RxCtrlAcceptBroadcast; + if (dev->mc_count > 15) + for (i = 0; i < 128; i++) + writel(new_mc_filter[i], ioaddr + MulticastArray + (i<<2)); + } + if (np->rx_mode != new_rx_mode) + writel(np->rx_mode = new_rx_mode, ioaddr + RxControl); +} + +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + u32 *data32 = (void *)&rq->ifr_data; + + switch(cmd) { + case SIOCGPARAMS: + data32[0] = np->msg_level; + data32[1] = np->multicast_filter_limit; + data32[2] = np->max_interrupt_work; + data32[3] = np->rx_copybreak; + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + np->msg_level = data32[0]; + np->multicast_filter_limit = data32[1]; + np->max_interrupt_work = data32[2]; + np->rx_copybreak = data32[3]; + return 0; + default: + return -EOPNOTSUPP; + } +} + +static int netdev_close(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + netif_stop_tx_queue(dev); + + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %4.4x " + "Rx %4.4x Int %2.2x.\n", + dev->name, (int)readl(ioaddr + TxStatus), + (int)readl(ioaddr + RxStatus), (int)readl(ioaddr + IntrStatus)); + printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", + dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx); + } + + /* Disable interrupts by clearing the interrupt mask. */ + writel(~0, ioaddr + IntrDisable); + readl(ioaddr + IntrStatus); + + /* Reset everything. */ + writel(0x04000000, ioaddr + ChipCtrl); + + del_timer(&np->timer); + +#ifdef __i386__ + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk("\n"KERN_DEBUG" Tx ring at %8.8x:\n", + (int)virt_to_bus(np->tx_ring)); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" #%d desc. buf %8.8x, length %8.8x, status %8.8x.\n", + i, np->tx_ring[i].buf_addr, np->tx_ring[i].cmd_length, + np->tx_ring[i].status); + printk("\n"KERN_DEBUG " Rx ring %8.8x:\n", + (int)virt_to_bus(np->rx_ring)); + for (i = 0; i < RX_RING_SIZE; i++) { + printk(KERN_DEBUG " #%d desc. %4.4x %4.4x %8.8x\n", + i, np->rx_ring[i].csum_length, + np->rx_ring[i].status, np->rx_ring[i].buf_addr); + if (np->rx_ring[i].buf_addr) { + if (*(u8*)np->rx_skbuff[i]->tail != 0x69) { + u16 *pkt_buf = (void *)np->rx_skbuff[i]->tail; + int j; + for (j = 0; j < 0x50; j++) + printk(" %4.4x", pkt_buf[j]); + printk("\n"); + } + } + } + } +#endif /* __i386__ debugging only */ + + free_irq(dev->irq, dev); + + /* Free all the skbuffs in the Rx queue. */ + for (i = 0; i < RX_RING_SIZE; i++) { + np->rx_ring[i].status = 0; + np->rx_ring[i].buf_addr = 0xBADF00D0; /* An invalid address. */ + if (np->rx_skbuff[i]) { +#if LINUX_VERSION_CODE < 0x20100 + np->rx_skbuff[i]->free = 1; +#endif + dev_free_skb(np->rx_skbuff[i]); + } + np->rx_skbuff[i] = 0; + } + for (i = 0; i < TX_RING_SIZE; i++) { + if (np->tx_skbuff[i]) + dev_free_skb(np->tx_skbuff[i]); + np->tx_skbuff[i] = 0; + } + + MOD_DEC_USE_COUNT; + + return 0; +} + +static int netdev_pwr_event(void *dev_instance, int event) +{ + struct net_device *dev = dev_instance; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_ATTACH: + MOD_INC_USE_COUNT; + break; + case DRV_SUSPEND: + /* Disable interrupts, stop Tx and Rx. */ + writel(~0, ioaddr + IntrDisable); + /* writel(2, ioaddr + RxCmd); */ + /* writew(2, ioaddr + TxCmd); */ + break; + case DRV_RESUME: + /* This is incomplete: the actions are very chip specific. */ + set_rx_mode(dev); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + /* Some, but not all, kernel versions close automatically. */ + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + unregister_netdev(dev); + release_region(dev->base_addr, pci_id_tbl[np->chip_id].io_size); + iounmap((char *)dev->base_addr); + for (devp = &root_net_dev; *devp; devp = next) { + next = &((struct netdev_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (np->priv_addr) + kfree(np->priv_addr); + kfree(dev); + MOD_DEC_USE_COUNT; + break; + } + } + + return 0; +} + + +#ifdef MODULE +int init_module(void) +{ + /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return pci_drv_register(&igige_drv_id, NULL); +} + +void cleanup_module(void) +{ + struct net_device *next_dev; + + pci_drv_unregister(&igige_drv_id); + + /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ + while (root_net_dev) { + struct netdev_private *np = (void *)(root_net_dev->priv); + unregister_netdev(root_net_dev); + release_region(root_net_dev->base_addr, + pci_id_tbl[np->chip_id].io_size); + iounmap((char *)(root_net_dev->base_addr)); + next_dev = np->next_module; + if (np->tx_ring == 0) + free_page((long)np->tx_ring); + if (np->rx_ring == 0) + free_page((long)np->rx_ring); + if (np->priv_addr) + kfree(np->priv_addr); + kfree(root_net_dev); + root_net_dev = next_dev; + } +} + +#endif /* MODULE */ + +/* + * Local variables: + * compile-command: "make KERNVER=`uname -r` intel-gige.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c intel-gige.c" + * simple-compile-command: "gcc -DMODULE -O6 -c intel-gige.c" + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ diff --git a/linux/src/drivers/net/kern_compat.h b/linux/src/drivers/net/kern_compat.h new file mode 100644 index 0000000..75c34b0 --- /dev/null +++ b/linux/src/drivers/net/kern_compat.h @@ -0,0 +1,285 @@ +#ifndef _KERN_COMPAT_H +#define _KERN_COMPAT_H +/* kern_compat.h: Linux PCI network adapter backward compatibility code. */ +/* + $Revision: 1.1.2.1 $ $Date: 2006/01/22 15:54:41 $ + + Kernel compatibility defines. + This file provides macros to mask the difference between kernel versions. + It is designed primarily to allow device drivers to be written so that + they work with a range of kernel versions. + + Written 1999-2003 Donald Becker, Scyld Computing Corporation + This software may be used and distributed according to the terms + of the GNU General Public License (GPL), incorporated herein by + reference. Drivers interacting with these functions are derivative + works and thus are covered the GPL. They must include an explicit + GPL notice. + + This code also provides inline scan and activate functions for PCI network + interfaces. It has an interface identical to pci-scan.c, but is + intended as an include file to simplify using updated drivers with older + kernel versions. + This code version matches pci-scan.c:v0.05 9/16/99 + + The author may be reached as becker@scyld.com, or + Donald Becker + Penguin Computing Corporation + 914 Bay Ridge Road, Suite 220 + Annapolis MD 21403 + + Other contributers: + <none> +*/ + +/* We try to use defined values to decide when an interface has changed or + added features, but we must have the kernel version number for a few. */ +#if ! defined(LINUX_VERSION_CODE) || (LINUX_VERSION_CODE < 0x10000) +#include <linux/version.h> +#endif +/* Older kernel versions didn't include modversions automatically. */ +#if LINUX_VERSION_CODE < 0x20300 && defined(MODVERSIONS) +#include <linux/modversions.h> +#endif + +/* There was no support for PCI address space mapping in 2.0, but the + Alpha needed it. See the 2.2 documentation. */ +#if LINUX_VERSION_CODE < 0x20100 && ! defined(__alpha__) +#define ioremap(a,b)\ + (((unsigned long)(a) >= 0x100000) ? vremap(a,b) : (void*)(a)) +#define iounmap(v)\ + do { if ((unsigned long)(v) >= 0x100000) vfree(v);} while (0) +#endif + +/* Support for adding info about the purpose of and parameters for kernel + modules was added in 2.1. */ +#if LINUX_VERSION_CODE < 0x20115 +#define MODULE_AUTHOR(name) extern int nonesuch +#define MODULE_DESCRIPTION(string) extern int nonesuch +#define MODULE_PARM(varname, typestring) extern int nonesuch +#define MODULE_PARM_DESC(var,desc) extern int nonesuch +#endif +#if !defined(MODULE_LICENSE) +#define MODULE_LICENSE(license) \ +static const char __module_license[] __attribute__((section(".modinfo"))) = \ +"license=" license +#endif +#if !defined(MODULE_PARM_DESC) +#define MODULE_PARM_DESC(var,desc) \ +const char __module_parm_desc_##var[] \ +__attribute__((section(".modinfo"))) = \ +"parm_desc_" __MODULE_STRING(var) "=" desc +#endif + +/* SMP and better multiarchitecture support were added. + Using an older kernel means we assume a little-endian uniprocessor. +*/ +#if LINUX_VERSION_CODE < 0x20123 +#define hard_smp_processor_id() smp_processor_id() +#define test_and_set_bit(val, addr) set_bit(val, addr) +#define cpu_to_le16(val) (val) +#define cpu_to_le32(val) (val) +#define le16_to_cpu(val) (val) +#define le16_to_cpus(val) /* In-place conversion. */ +#define le32_to_cpu(val) (val) +#define cpu_to_be16(val) ((((val) & 0xff) << 8) + (((val) >> 8) & 0xff)) +#define cpu_to_be32(val) ((cpu_to_be16(val) << 16) + cpu_to_be16((val) >> 16)) +typedef long spinlock_t; +#define SPIN_LOCK_UNLOCKED 0 +#define spin_lock(lock) +#define spin_unlock(lock) +#define spin_lock_irqsave(lock, flags) do {save_flags(flags); cli();} while(0) +#define spin_unlock_irqrestore(lock, flags) restore_flags(flags) +#endif + +#if LINUX_VERSION_CODE <= 0x20139 +#define net_device_stats enet_statistics +#else +#define NETSTATS_VER2 +#endif + +/* These are used by the netdrivers to report values from the + MII (Media Indpendent Interface) management registers. +*/ +#ifndef SIOCGMIIPHY +#define SIOCGMIIPHY (SIOCDEVPRIVATE) /* Get the PHY in use. */ +#define SIOCGMIIREG (SIOCDEVPRIVATE+1) /* Read a PHY register. */ +#define SIOCSMIIREG (SIOCDEVPRIVATE+2) /* Write a PHY register. */ +#endif +#ifndef SIOCGPARAMS +#define SIOCGPARAMS (SIOCDEVPRIVATE+3) /* Read operational parameters. */ +#define SIOCSPARAMS (SIOCDEVPRIVATE+4) /* Set operational parameters. */ +#endif + +#if !defined(HAVE_NETIF_MSG) +enum { + NETIF_MSG_DRV = 0x0001, + NETIF_MSG_PROBE = 0x0002, + NETIF_MSG_LINK = 0x0004, + NETIF_MSG_TIMER = 0x0008, + NETIF_MSG_IFDOWN = 0x0010, + NETIF_MSG_IFUP = 0x0020, + NETIF_MSG_RX_ERR = 0x0040, + NETIF_MSG_TX_ERR = 0x0080, + NETIF_MSG_TX_QUEUED = 0x0100, + NETIF_MSG_INTR = 0x0200, + NETIF_MSG_TX_DONE = 0x0400, + NETIF_MSG_RX_STATUS = 0x0800, + NETIF_MSG_PKTDATA = 0x1000, + /* 2000 is reserved. */ + NETIF_MSG_WOL = 0x4000, + NETIF_MSG_MISC = 0x8000, + NETIF_MSG_RXFILTER = 0x10000, +}; +#define NETIF_MSG_MAX 0x10000 +#endif + +#if !defined(NETIF_MSG_MAX) || NETIF_MSG_MAX < 0x8000 +#define NETIF_MSG_MISC 0x8000 +#endif +#if !defined(NETIF_MSG_MAX) || NETIF_MSG_MAX < 0x10000 +#define NETIF_MSG_RXFILTER 0x10000 +#endif + +#if LINUX_VERSION_CODE < 0x20155 +#include <linux/bios32.h> +#define PCI_SUPPORT_VER1 +/* A minimal version of the 2.2.* PCI support that handles configuration + space access. + Drivers that actually use pci_dev fields must do explicit compatibility. + Note that the struct pci_dev * "pointer" is actually a byte mapped integer! +*/ +#if LINUX_VERSION_CODE < 0x20014 +struct pci_dev { int not_used; }; +#endif + +#define pci_find_slot(bus, devfn) (struct pci_dev*)((bus<<8) | devfn | 0xf0000) +#define bus_number(pci_dev) ((((int)(pci_dev))>>8) & 0xff) +#define devfn_number(pci_dev) (((int)(pci_dev)) & 0xff) +#define pci_bus_number(pci_dev) ((((int)(pci_dev))>>8) & 0xff) +#define pci_devfn(pci_dev) (((int)(pci_dev)) & 0xff) + +#ifndef CONFIG_PCI +extern inline int pci_present(void) { return 0; } +#else +#define pci_present pcibios_present +#endif + +#define pci_read_config_byte(pdev, where, valp)\ + pcibios_read_config_byte(bus_number(pdev), devfn_number(pdev), where, valp) +#define pci_read_config_word(pdev, where, valp)\ + pcibios_read_config_word(bus_number(pdev), devfn_number(pdev), where, valp) +#define pci_read_config_dword(pdev, where, valp)\ + pcibios_read_config_dword(bus_number(pdev), devfn_number(pdev), where, valp) +#define pci_write_config_byte(pdev, where, val)\ + pcibios_write_config_byte(bus_number(pdev), devfn_number(pdev), where, val) +#define pci_write_config_word(pdev, where, val)\ + pcibios_write_config_word(bus_number(pdev), devfn_number(pdev), where, val) +#define pci_write_config_dword(pdev, where, val)\ + pcibios_write_config_dword(bus_number(pdev), devfn_number(pdev), where, val) +#else +#define PCI_SUPPORT_VER2 +#define pci_bus_number(pci_dev) ((pci_dev)->bus->number) +#define pci_devfn(pci_dev) ((pci_dev)->devfn) +#endif + +/* The arg count changed, but function name did not. + We cover that bad choice by defining a new name. +*/ +#if LINUX_VERSION_CODE < 0x20159 +#define dev_free_skb(skb) dev_kfree_skb(skb, FREE_WRITE) +#define dev_free_skb_irq(skb) dev_kfree_skb(skb, FREE_WRITE) +#elif LINUX_VERSION_CODE < 0x20400 +#define dev_free_skb(skb) dev_kfree_skb(skb) +#define dev_free_skb_irq(skb) dev_kfree_skb(skb) +#else +#define dev_free_skb(skb) dev_kfree_skb(skb) +#define dev_free_skb_irq(skb) dev_kfree_skb_irq(skb) +#endif + +/* Added at the suggestion of Jes Sorensen. */ +#if LINUX_VERSION_CODE > 0x20153 +#include <linux/init.h> +#else +#define __init +#define __initdata +#define __initfunc(__arginit) __arginit +#endif + +/* The old 'struct device' used a too-generic name. */ +#if LINUX_VERSION_CODE < 0x2030d +#define net_device device +#endif + +/* More changes for the 2.4 kernel, some in the zillion 2.3.99 releases. */ +#if LINUX_VERSION_CODE < 0x20363 +#define DECLARE_MUTEX(name) struct semaphore (name) = MUTEX; +#define down_write(semaphore_p) down(semaphore_p) +#define down_read(semaphore_p) down(semaphore_p) +#define up_write(semaphore_p) up(semaphore_p) +#define up_read(semaphore_p) up(semaphore_p) +/* Note that the kernel version has a broken time_before()! */ +#define time_after(a,b) ((long)(b) - (long)(a) < 0) +#define time_before(a,b) ((long)(a) - (long)(b) < 0) +#else +#define get_free_page get_zeroed_page +#endif + +/* The 2.2 kernels added the start of capability-based security for operations + that formerally could only be done by root. +*/ +#if ! defined(CAP_NET_ADMIN) +#define capable(CAP_XXX) (suser()) +#endif + +#if ! defined(HAVE_NETIF_QUEUE) +#define netif_wake_queue(dev) do { clear_bit( 0, (void*)&(dev)->tbusy); mark_bh(NET_BH); } while (0) +#define netif_start_tx_queue(dev) do { (dev)->tbusy = 0; dev->start = 1; } while (0) +#define netif_stop_tx_queue(dev) do { (dev)->tbusy = 1; dev->start = 0; } while (0) +#define netif_queue_paused(dev) ((dev)->tbusy != 0) +/* Splitting these lines exposes a bug in some preprocessors. */ +#define netif_pause_tx_queue(dev) (test_and_set_bit( 0, (void*)&(dev)->tbusy)) +#define netif_unpause_tx_queue(dev) do { clear_bit( 0, (void*)&(dev)->tbusy); } while (0) +#define netif_resume_tx_queue(dev) do { clear_bit( 0, (void*)&(dev)->tbusy); mark_bh(NET_BH); } while (0) + +#define netif_running(dev) ((dev)->start != 0) +#define netif_device_attach(dev) do {; } while (0) +#define netif_device_detach(dev) do {; } while (0) +#define netif_device_present(dev) (1) +#define netif_set_tx_timeout(dev, func, deltajiffs) do {; } while (0) +#define netif_link_down(dev) (dev)->flags &= ~IFF_RUNNING +#define netif_link_up(dev) (dev)->flags |= IFF_RUNNING + +#else + +#define netif_start_tx_queue(dev) netif_start_queue(dev) +#define netif_stop_tx_queue(dev) netif_stop_queue(dev) +#define netif_queue_paused(dev) netif_queue_stopped(dev) +#define netif_resume_tx_queue(dev) netif_wake_queue(dev) +/* Only used in transmit path. No function in 2.4. */ +#define netif_pause_tx_queue(dev) 0 +#define netif_unpause_tx_queue(dev) do {; } while (0) + +#ifdef __LINK_STATE_NOCARRIER +#define netif_link_down(dev) netif_carrier_off(dev) +#define netif_link_up(dev) netif_carrier_on(dev) +#else +#define netif_link_down(dev) (dev)->flags &= ~IFF_RUNNING +#define netif_link_up(dev) (dev)->flags |= IFF_RUNNING +#endif + +#endif +#ifndef PCI_DMA_BUS_IS_PHYS +#define pci_dma_sync_single(pci_dev, base_addr, extent, tofrom) do {; } while (0) +#define pci_map_single(pci_dev, base_addr, extent, dir) virt_to_bus(base_addr) +#define pci_unmap_single(pci_dev, base_addr, extent, dir) do {; } while (0) +#endif + +#endif +/* + * Local variables: + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ diff --git a/linux/src/drivers/net/myson803.c b/linux/src/drivers/net/myson803.c new file mode 100644 index 0000000..545d124 --- /dev/null +++ b/linux/src/drivers/net/myson803.c @@ -0,0 +1,1650 @@ +/* myson803.c: A Linux device driver for the Myson mtd803 Ethernet chip. */ +/* + Written 1998-2003 by Donald Becker. + + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. + + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 410 Severn Ave., Suite 210 + Annapolis MD 21403 + + Support information and updates available at + http://www.scyld.com/network/myson803.html +*/ + +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"myson803.c:v1.05 3/10/2003 Written by Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/network/drivers.html\n"; + +/* Automatically extracted configuration info: +probe-func: myson803_probe +config-in: tristate 'Myson MTD803 series Ethernet support' CONFIG_MYSON_ETHER + +c-help-name: Myson MTD803 PCI Ethernet support +c-help-symbol: CONFIG_MYSON_ETHER +c-help: This driver is for the Myson MTD803 Ethernet adapter series. +c-help: More specific information and updates are available from +c-help: http://www.scyld.com/network/drivers.html +*/ + +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ + +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; + +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ +static int max_interrupt_work = 40; + +/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). + This chip uses a 64 element hash table based on the Ethernet CRC. */ +static int multicast_filter_limit = 32; + +/* Set the copy breakpoint for the copy-only-tiny-frames scheme. + Setting to > 1518 effectively disables this feature. */ +static int rx_copybreak = 0; + +/* Used to pass the media type, etc. + Both 'options[]' and 'full_duplex[]' should exist for driver + interoperability. + The media type is usually passed in 'options[]'. + The default is autonegotation for speed and duplex. + This should rarely be overridden. + Use option values 0x10/0x20 for 10Mbps, 0x100,0x200 for 100Mbps. + Use option values 0x10 and 0x100 for forcing half duplex fixed speed. + Use option values 0x20 and 0x200 for forcing full duplex operation. +*/ +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; + +/* Operational parameters that are set at compile time. */ + +/* Keep the ring sizes a power of two for compile efficiency. + The compiler will convert <unsigned>'%'<2^N> into a bit mask. + Making the Tx ring too large decreases the effectiveness of channel + bonding and packet priority. + There are no ill effects from too-large receive rings. */ +#define TX_RING_SIZE 16 +#define TX_QUEUE_LEN 10 /* Limit Tx ring entries actually used. */ +#define RX_RING_SIZE 32 + +/* Operational parameters that usually are not changed. */ +/* Time in jiffies before concluding the transmitter is hung. */ +#define TX_TIMEOUT (6*HZ) + +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. This is not a limit, + but a way to keep a consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 + +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif + +/* Include files, designed to support most kernel versions 2.0.0 and later. */ +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + +#include <linux/version.h> +#if defined(MODVERSIONS) +#include <linux/modversions.h> +#endif +#include <linux/module.h> + +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else +#include <linux/malloc.h> +#endif +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/delay.h> +#include <asm/processor.h> /* Processor type for cache alignment. */ +#include <asm/bitops.h> +#include <asm/io.h> +#include <asm/unaligned.h> + +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif + +/* Condensed operations for readability. */ +#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) +#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) + +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif + +/* Kernels before 2.1.0 cannot map the high addrs assigned by some BIOSes. */ +#if (LINUX_VERSION_CODE < 0x20100) || ! defined(MODULE) +#define USE_IO_OPS +#endif + +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); +MODULE_DESCRIPTION("Myson mtd803 Ethernet driver"); +MODULE_LICENSE("GPL"); +/* List in order of common use. */ +MODULE_PARM(debug, "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(max_interrupt_work, "i"); +MODULE_PARM(rx_copybreak, "i"); +MODULE_PARM(multicast_filter_limit, "i"); +MODULE_PARM_DESC(debug, "Driver message level (0-31)"); +MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex"); +MODULE_PARM_DESC(full_duplex, "Non-zero to force full duplex, " + "non-negotiated link (deprecated)."); +MODULE_PARM_DESC(max_interrupt_work, + "Maximum events handled per interrupt"); +MODULE_PARM_DESC(rx_copybreak, + "Breakpoint in bytes for copy-only-tiny-frames"); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast addresses before switching to Rx-all-multicast"); + +/* + Theory of Operation + +I. Board Compatibility + +This driver is for the Myson mtd803 chip. +It should work with other Myson 800 series chips. + +II. Board-specific settings + +None. + +III. Driver operation + +IIIa. Ring buffers + +This driver uses two statically allocated fixed-size descriptor lists +formed into rings by a branch from the final descriptor to the beginning of +the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. +Some chips explicitly use only 2^N sized rings, while others use a +'next descriptor' pointer that the driver forms into rings. + +IIIb/c. Transmit/Receive Structure + +This driver uses a zero-copy receive and transmit scheme. +The driver allocates full frame size skbuffs for the Rx ring buffers at +open() time and passes the skb->data field to the chip as receive data +buffers. When an incoming frame is less than RX_COPYBREAK bytes long, +a fresh skbuff is allocated and the frame is copied to the new skbuff. +When the incoming frame is larger, the skbuff is passed directly up the +protocol stack. Buffers consumed this way are replaced by newly allocated +skbuffs in a later phase of receives. + +The RX_COPYBREAK value is chosen to trade-off the memory wasted by +using a full-sized skbuff for small frames vs. the copying costs of larger +frames. New boards are typically used in generously configured machines +and the underfilled buffers have negligible impact compared to the benefit of +a single allocation size, so the default value of zero results in never +copying packets. When copying is done, the cost is usually mitigated by using +a combined copy/checksum routine. Copying also preloads the cache, which is +most useful with small frames. + +A subtle aspect of the operation is that the IP header at offset 14 in an +ethernet frame isn't longword aligned for further processing. +When unaligned buffers are permitted by the hardware (and always on copies) +frames are put into the skbuff at an offset of "+2", 16-byte aligning +the IP header. + +IIId. Synchronization + +The driver runs as two independent, single-threaded flows of control. One +is the send-packet routine, which enforces single-threaded use by the +dev->tbusy flag. The other thread is the interrupt handler, which is single +threaded by the hardware and interrupt handling software. + +The send packet thread has partial control over the Tx ring and 'dev->tbusy' +flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next +queue slot is empty, it clears the tbusy flag when finished otherwise it sets +the 'lp->tx_full' flag. + +The interrupt handler has exclusive control over the Rx ring and records stats +from the Tx ring. After reaping the stats, it marks the Tx queue entry as +empty by incrementing the dirty_tx mark. Iff the 'lp->tx_full' flag is set, it +clears both the tx_full and tbusy flags. + +IIId. SMP semantics + +The following are serialized with respect to each other via the "xmit_lock". + dev->hard_start_xmit() Transmit a packet + dev->tx_timeout() Transmit watchdog for stuck Tx + dev->set_multicast_list() Set the recieve filter. +Note: The Tx timeout watchdog code is implemented by the timer routine in +kernels up to 2.2.*. In 2.4.* and later the timeout code is part of the +driver interface. + +The following fall under the global kernel lock. The module will not be +unloaded during the call, unless a call with a potential reschedule e.g. +kmalloc() is called. No other synchronization assertion is made. + dev->open() + dev->do_ioctl() + dev->get_stats() +Caution: The lock for dev->open() is commonly broken with request_irq() or +kmalloc(). It is best to avoid any lock-breaking call in do_ioctl() and +get_stats(), or additional module locking code must be implemented. + +The following is self-serialized (no simultaneous entry) + An handler registered with request_irq(). + +IV. Notes + +IVb. References + +http://www.scyld.com/expert/100mbps.html +http://scyld.com/expert/NWay.html +http://www.myson.com.hk/mtd/datasheet/mtd803.pdf + Myson does not require a NDA to read the datasheet. + +IVc. Errata + +No undocumented errata. +*/ + + + +/* PCI probe routines. */ + +static void *myson_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +static int netdev_pwr_event(void *dev_instance, int event); + +/* Chips prior to the 803 have an external MII transceiver. */ +enum chip_capability_flags { HasMIIXcvr=1, HasChipXcvr=2 }; + +#ifdef USE_IO_OPS +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_IO | PCI_ADDR0) +#define PCI_IOSIZE 256 +#else +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_MEM | PCI_ADDR1) +#define PCI_IOSIZE 1024 +#endif + +static struct pci_id_info pci_id_tbl[] = { + {"Myson mtd803 Fast Ethernet", {0x08031516, 0xffffffff, }, + PCI_IOTYPE, PCI_IOSIZE, HasChipXcvr}, + {"Myson mtd891 Gigabit Ethernet", {0x08911516, 0xffffffff, }, + PCI_IOTYPE, PCI_IOSIZE, HasChipXcvr}, + {0,}, /* 0 terminated list. */ +}; + +struct drv_id_info myson803_drv_id = { + "myson803", 0, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, myson_probe1, + netdev_pwr_event }; + +/* This driver was written to use PCI memory space, however x86-oriented + hardware sometimes works only with I/O space accesses. */ +#ifdef USE_IO_OPS +#undef readb +#undef readw +#undef readl +#undef writeb +#undef writew +#undef writel +#define readb inb +#define readw inw +#define readl inl +#define writeb outb +#define writew outw +#define writel outl +#endif + +/* Offsets to the various registers. + Most accesses must be longword aligned. */ +enum register_offsets { + StationAddr=0x00, MulticastFilter0=0x08, MulticastFilter1=0x0C, + FlowCtrlAddr=0x10, RxConfig=0x18, TxConfig=0x1a, PCIBusCfg=0x1c, + TxStartDemand=0x20, RxStartDemand=0x24, + RxCurrentPtr=0x28, TxRingPtr=0x2c, RxRingPtr=0x30, + IntrStatus=0x34, IntrEnable=0x38, + FlowCtrlThreshold=0x3c, + MIICtrl=0x40, EECtrl=0x40, RxErrCnts=0x44, TxErrCnts=0x48, + PHYMgmt=0x4c, +}; + +/* Bits in the interrupt status/mask registers. */ +enum intr_status_bits { + IntrRxErr=0x0002, IntrRxDone=0x0004, IntrTxDone=0x0008, + IntrTxEmpty=0x0010, IntrRxEmpty=0x0020, StatsMax=0x0040, RxEarly=0x0080, + TxEarly=0x0100, RxOverflow=0x0200, TxUnderrun=0x0400, + IntrPCIErr=0x2000, NWayDone=0x4000, LinkChange=0x8000, +}; + +/* Bits in the RxMode (np->txrx_config) register. */ +enum rx_mode_bits { + RxEnable=0x01, RxFilter=0xfe, + AcceptErr=0x02, AcceptRunt=0x08, AcceptBroadcast=0x40, + AcceptMulticast=0x20, AcceptAllPhys=0x80, AcceptMyPhys=0x00, + RxFlowCtrl=0x2000, + TxEnable=0x40000, TxModeFDX=0x00100000, TxThreshold=0x00e00000, +}; + +/* Misc. bits. */ +enum misc_bits { + BCR_Reset=1, /* PCIBusCfg */ + TxThresholdInc=0x200000, +}; + +/* The Rx and Tx buffer descriptors. */ +/* Note that using only 32 bit fields simplifies conversion to big-endian + architectures. */ +struct netdev_desc { + u32 status; + u32 ctrl_length; + u32 buf_addr; + u32 next_desc; +}; + +/* Bits in network_desc.status */ +enum desc_status_bits { + DescOwn=0x80000000, + RxDescStartPacket=0x0800, RxDescEndPacket=0x0400, RxDescWholePkt=0x0c00, + RxDescErrSum=0x80, RxErrRunt=0x40, RxErrLong=0x20, RxErrFrame=0x10, + RxErrCRC=0x08, RxErrCode=0x04, + TxErrAbort=0x2000, TxErrCarrier=0x1000, TxErrLate=0x0800, + TxErr16Colls=0x0400, TxErrDefer=0x0200, TxErrHeartbeat=0x0100, + TxColls=0x00ff, +}; +/* Bits in network_desc.ctrl_length */ +enum ctrl_length_bits { + TxIntrOnDone=0x80000000, TxIntrOnFIFO=0x40000000, + TxDescEndPacket=0x20000000, TxDescStartPacket=0x10000000, + TxAppendCRC=0x08000000, TxPadTo64=0x04000000, TxNormalPkt=0x3C000000, +}; + +#define PRIV_ALIGN 15 /* Required alignment mask */ +/* Use __attribute__((aligned (L1_CACHE_BYTES))) to maintain alignment + within the structure. */ +struct netdev_private { + /* Descriptor rings first for alignment. */ + struct netdev_desc rx_ring[RX_RING_SIZE]; + struct netdev_desc tx_ring[TX_RING_SIZE]; + struct net_device *next_module; /* Link for devices of this type. */ + void *priv_addr; /* Unaligned address for kfree */ + /* The addresses of receive-in-place skbuffs. */ + struct sk_buff* rx_skbuff[RX_RING_SIZE]; + /* The saved address of a sent-in-place packet/buffer, for later free(). */ + struct sk_buff* tx_skbuff[TX_RING_SIZE]; + struct net_device_stats stats; + struct timer_list timer; /* Media monitoring timer. */ + /* Frequently used values: keep some adjacent for cache effect. */ + int msg_level; + int max_interrupt_work; + int intr_enable; + int chip_id, drv_flags; + struct pci_dev *pci_dev; + + struct netdev_desc *rx_head_desc; + unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ + unsigned int rx_buf_sz; /* Based on MTU+slack. */ + int rx_copybreak; + + unsigned int cur_tx, dirty_tx; + unsigned int tx_full:1; /* The Tx queue is full. */ + unsigned int rx_died:1; + unsigned int txrx_config; + + /* These values keep track of the transceiver/media in use. */ + unsigned int full_duplex:1; /* Full-duplex operation requested. */ + unsigned int duplex_lock:1; + unsigned int medialock:1; /* Do not sense media. */ + unsigned int default_port; /* Last dev->if_port value. */ + + unsigned int mcast_filter[2]; + int multicast_filter_limit; + + /* MII transceiver section. */ + int mii_cnt; /* MII device addresses. */ + u16 advertising; /* NWay media advertisement */ + unsigned char phys[2]; /* MII device addresses. */ +}; + +static int eeprom_read(long ioaddr, int location); +static int mdio_read(struct net_device *dev, int phy_id, + unsigned int location); +static void mdio_write(struct net_device *dev, int phy_id, + unsigned int location, int value); +static int netdev_open(struct net_device *dev); +static void check_duplex(struct net_device *dev); +static void netdev_timer(unsigned long data); +static void tx_timeout(struct net_device *dev); +static void init_ring(struct net_device *dev); +static int start_tx(struct sk_buff *skb, struct net_device *dev); +static void intr_handler(int irq, void *dev_instance, struct pt_regs *regs); +static void netdev_error(struct net_device *dev, int intr_status); +static int netdev_rx(struct net_device *dev); +static void netdev_error(struct net_device *dev, int intr_status); +static void set_rx_mode(struct net_device *dev); +static struct net_device_stats *get_stats(struct net_device *dev); +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +static int netdev_close(struct net_device *dev); + + + +/* A list of our installed devices, for removing the driver module. */ +static struct net_device *root_net_dev = NULL; + +#ifndef MODULE +int myson803_probe(struct net_device *dev) +{ + if (pci_drv_register(&myson803_drv_id, dev) < 0) + return -ENODEV; + if (debug >= NETIF_MSG_DRV) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return 0; +} +#endif + +static void *myson_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int card_idx) +{ + struct net_device *dev; + struct netdev_private *np; + void *priv_mem; + int i, option = card_idx < MAX_UNITS ? options[card_idx] : 0; + + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; + + printk(KERN_INFO "%s: %s at 0x%lx, ", + dev->name, pci_id_tbl[chip_idx].name, ioaddr); + + for (i = 0; i < 3; i++) + ((u16 *)dev->dev_addr)[i] = le16_to_cpu(eeprom_read(ioaddr, i + 8)); + if (memcmp(dev->dev_addr, "\0\0\0\0\0", 6) == 0) { + /* Fill a temp addr with the "locally administered" bit set. */ + memcpy(dev->dev_addr, ">Linux", 6); + } + for (i = 0; i < 5; i++) + printk("%2.2x:", dev->dev_addr[i]); + printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq); + +#if ! defined(final_version) /* Dump the EEPROM contents during development. */ + if (debug > 4) + for (i = 0; i < 0x40; i++) + printk("%4.4x%s", + eeprom_read(ioaddr, i), i % 16 != 15 ? " " : "\n"); +#endif + + /* Make certain elements e.g. descriptor lists are aligned. */ + priv_mem = kmalloc(sizeof(*np) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; + + /* Do bogusness checks before this point. + We do a request_region() only to register /proc/ioports info. */ +#ifdef USE_IO_OPS + request_region(ioaddr, pci_id_tbl[chip_idx].io_size, dev->name); +#endif + + /* Reset the chip to erase previous misconfiguration. */ + writel(BCR_Reset, ioaddr + PCIBusCfg); + + dev->base_addr = ioaddr; + dev->irq = irq; + + dev->priv = np = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); + memset(np, 0, sizeof(*np)); + np->priv_addr = priv_mem; + + np->next_module = root_net_dev; + root_net_dev = dev; + + np->pci_dev = pdev; + np->chip_id = chip_idx; + np->drv_flags = pci_id_tbl[chip_idx].drv_flags; + np->msg_level = (1 << debug) - 1; + np->rx_copybreak = rx_copybreak; + np->max_interrupt_work = max_interrupt_work; + np->multicast_filter_limit = multicast_filter_limit; + + if (dev->mem_start) + option = dev->mem_start; + + /* The lower four bits are the media type. */ + if (option > 0) { + if (option & 0x220) + np->full_duplex = 1; + np->default_port = option & 0x3ff; + if (np->default_port) + np->medialock = 1; + } + if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) + np->full_duplex = 1; + + if (np->full_duplex) { + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO "%s: Set to forced full duplex, autonegotiation" + " disabled.\n", dev->name); + np->duplex_lock = 1; + } + + /* The chip-specific entries in the device structure. */ + dev->open = &netdev_open; + dev->hard_start_xmit = &start_tx; + dev->stop = &netdev_close; + dev->get_stats = &get_stats; + dev->set_multicast_list = &set_rx_mode; + dev->do_ioctl = &mii_ioctl; + + if (np->drv_flags & HasMIIXcvr) { + int phy, phy_idx = 0; + for (phy = 0; phy < 32 && phy_idx < 4; phy++) { + int mii_status = mdio_read(dev, phy, 1); + if (mii_status != 0xffff && mii_status != 0x0000) { + np->phys[phy_idx++] = phy; + np->advertising = mdio_read(dev, phy, 4); + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO "%s: MII PHY found at address %d, status " + "0x%4.4x advertising %4.4x.\n", + dev->name, phy, mii_status, np->advertising); + } + } + np->mii_cnt = phy_idx; + } + if (np->drv_flags & HasChipXcvr) { + np->phys[np->mii_cnt++] = 32; + printk(KERN_INFO "%s: Internal PHY status 0x%4.4x" + " advertising %4.4x.\n", + dev->name, mdio_read(dev, 32, 1), mdio_read(dev, 32, 4)); + } + /* Allow forcing the media type. */ + if (np->default_port & 0x330) { + np->medialock = 1; + if (option & 0x220) + np->full_duplex = 1; + printk(KERN_INFO " Forcing %dMbs %s-duplex operation.\n", + (option & 0x300 ? 100 : 10), + (np->full_duplex ? "full" : "half")); + if (np->mii_cnt) + mdio_write(dev, np->phys[0], 0, + ((option & 0x300) ? 0x2000 : 0) | /* 100mbps? */ + (np->full_duplex ? 0x0100 : 0)); /* Full duplex? */ + } + + return dev; +} + + +/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. These are + often serial bit streams generated by the host processor. + The example below is for the common 93c46 EEPROM, 64 16 bit words. */ + +/* This "delay" forces out buffered PCI writes. + The udelay() is unreliable for timing, but some Myson NICs shipped with + absurdly slow EEPROMs. + */ +#define eeprom_delay(ee_addr) readl(ee_addr); udelay(2); readl(ee_addr) + +enum EEPROM_Ctrl_Bits { + EE_ShiftClk=0x04<<16, EE_ChipSelect=0x88<<16, + EE_DataOut=0x02<<16, EE_DataIn=0x01<<16, + EE_Write0=0x88<<16, EE_Write1=0x8a<<16, +}; + +/* The EEPROM commands always start with 01.. preamble bits. + Commands are prepended to the variable-length address. */ +enum EEPROM_Cmds { EE_WriteCmd=5, EE_ReadCmd=6, EE_EraseCmd=7, }; + +static int eeprom_read(long addr, int location) +{ + int i; + int retval = 0; + long ee_addr = addr + EECtrl; + int read_cmd = location | (EE_ReadCmd<<6); + + writel(EE_ChipSelect, ee_addr); + + /* Shift the read command bits out. */ + for (i = 10; i >= 0; i--) { + int dataval = (read_cmd & (1 << i)) ? EE_Write1 : EE_Write0; + writel(dataval, ee_addr); + eeprom_delay(ee_addr); + writel(dataval | EE_ShiftClk, ee_addr); + eeprom_delay(ee_addr); + } + writel(EE_ChipSelect, ee_addr); + eeprom_delay(ee_addr); + + for (i = 16; i > 0; i--) { + writel(EE_ChipSelect | EE_ShiftClk, ee_addr); + eeprom_delay(ee_addr); + retval = (retval << 1) | ((readl(ee_addr) & EE_DataIn) ? 1 : 0); + writel(EE_ChipSelect, ee_addr); + eeprom_delay(ee_addr); + } + + /* Terminate the EEPROM access. */ + writel(EE_ChipSelect, ee_addr); + writel(0, ee_addr); + return retval; +} + +/* MII transceiver control section. + Read and write the MII registers using software-generated serial + MDIO protocol. See the MII specifications or DP83840A data sheet + for details. + + The maximum data clock rate is 2.5 Mhz. + The timing is decoupled from the processor clock by flushing the write + from the CPU write buffer with a following read, and using PCI + transaction timing. */ +#define mdio_in(mdio_addr) readl(mdio_addr) +#define mdio_out(value, mdio_addr) writel(value, mdio_addr) +#define mdio_delay(mdio_addr) readl(mdio_addr) + +/* Set iff a MII transceiver on any interface requires mdio preamble. + This only set with older tranceivers, so the extra + code size of a per-interface flag is not worthwhile. */ +static char mii_preamble_required = 0; + +enum mii_reg_bits { + MDIO_ShiftClk=0x0001, MDIO_Data=0x0002, MDIO_EnbOutput=0x0004, +}; +#define MDIO_EnbIn (0) +#define MDIO_WRITE0 (MDIO_EnbOutput) +#define MDIO_WRITE1 (MDIO_Data | MDIO_EnbOutput) + +/* Generate the preamble required for initial synchronization and + a few older transceivers. */ +static void mdio_sync(long mdio_addr) +{ + int bits = 32; + + /* Establish sync by sending at least 32 logic ones. */ + while (--bits >= 0) { + mdio_out(MDIO_WRITE1, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } +} + +static int mdio_read(struct net_device *dev, int phy_id, unsigned int location) +{ + long ioaddr = dev->base_addr; + long mdio_addr = ioaddr + MIICtrl; + int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location; + int i, retval = 0; + + if (location >= 32) + return 0xffff; + if (phy_id >= 32) { + if (location < 6) + return readw(ioaddr + PHYMgmt + location*2); + else if (location == 16) + return readw(ioaddr + PHYMgmt + 6*2); + else if (location == 17) + return readw(ioaddr + PHYMgmt + 7*2); + else if (location == 18) + return readw(ioaddr + PHYMgmt + 10*2); + else + return 0; + } + + if (mii_preamble_required) + mdio_sync(mdio_addr); + + /* Shift the read command bits out. */ + for (i = 15; i >= 0; i--) { + int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; + + mdio_out(dataval, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(dataval | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + /* Read the two transition, 16 data, and wire-idle bits. */ + for (i = 19; i > 0; i--) { + mdio_out(MDIO_EnbIn, mdio_addr); + mdio_delay(mdio_addr); + retval = (retval << 1) | ((mdio_in(mdio_addr) & MDIO_Data) ? 1 : 0); + mdio_out(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + return (retval>>1) & 0xffff; +} + +static void mdio_write(struct net_device *dev, int phy_id, + unsigned int location, int value) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + long mdio_addr = ioaddr + MIICtrl; + int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value; + int i; + + if (location == 4 && phy_id == np->phys[0]) + np->advertising = value; + else if (location >= 32) + return; + + if (phy_id == 32) { + if (location < 6) + writew(value, ioaddr + PHYMgmt + location*2); + else if (location == 16) + writew(value, ioaddr + PHYMgmt + 6*2); + else if (location == 17) + writew(value, ioaddr + PHYMgmt + 7*2); + return; + } + + if (mii_preamble_required) + mdio_sync(mdio_addr); + + /* Shift the command bits out. */ + for (i = 31; i >= 0; i--) { + int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; + + mdio_out(dataval, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(dataval | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + /* Clear out extra bits. */ + for (i = 2; i > 0; i--) { + mdio_out(MDIO_EnbIn, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + return; +} + + +static int netdev_open(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + /* Some chips may need to be reset. */ + + MOD_INC_USE_COUNT; + + writel(~0, ioaddr + IntrStatus); + + /* Note that both request_irq() and init_ring() call kmalloc(), which + break the global kernel lock protecting this routine. */ + if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; + return -EAGAIN; + } + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: netdev_open() irq %d.\n", + dev->name, dev->irq); + + init_ring(dev); + + writel(virt_to_bus(np->rx_ring), ioaddr + RxRingPtr); + writel(virt_to_bus(np->tx_ring), ioaddr + TxRingPtr); + + /* Address register must be written as words. */ + writel(cpu_to_le32(cpu_to_le32(get_unaligned((u32 *)dev->dev_addr))), + ioaddr + StationAddr); + writel(cpu_to_le16(cpu_to_le16(get_unaligned((u16 *)(dev->dev_addr+4)))), + ioaddr + StationAddr + 4); + /* Set the flow control address, 01:80:c2:00:00:01. */ + writel(0x00c28001, ioaddr + FlowCtrlAddr); + writel(0x00000100, ioaddr + FlowCtrlAddr + 4); + + /* Initialize other registers. */ + /* Configure the PCI bus bursts and FIFO thresholds. */ + writel(0x01f8, ioaddr + PCIBusCfg); + + if (dev->if_port == 0) + dev->if_port = np->default_port; + + np->txrx_config = TxEnable | RxEnable | RxFlowCtrl | 0x00600000; + np->mcast_filter[0] = np->mcast_filter[1] = 0; + np->rx_died = 0; + set_rx_mode(dev); + netif_start_tx_queue(dev); + + /* Enable interrupts by setting the interrupt mask. */ + np->intr_enable = IntrRxDone | IntrRxErr | IntrRxEmpty | IntrTxDone + | IntrTxEmpty | StatsMax | RxOverflow | TxUnderrun | IntrPCIErr + | NWayDone | LinkChange; + writel(np->intr_enable, ioaddr + IntrEnable); + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Done netdev_open(), PHY status: %x %x.\n", + dev->name, (int)readw(ioaddr + PHYMgmt), + (int)readw(ioaddr + PHYMgmt + 2)); + + /* Set the timer to check for link beat. */ + init_timer(&np->timer); + np->timer.expires = jiffies + 3*HZ; + np->timer.data = (unsigned long)dev; + np->timer.function = &netdev_timer; /* timer handler */ + add_timer(&np->timer); + + return 0; +} + +static void check_duplex(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int new_tx_mode = np->txrx_config; + + if (np->medialock) { + } else { + int mii_reg5 = mdio_read(dev, np->phys[0], 5); + int negotiated = mii_reg5 & np->advertising; + int duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040; + if (np->duplex_lock || mii_reg5 == 0xffff) + return; + if (duplex) + new_tx_mode |= TxModeFDX; + if (np->full_duplex != duplex) { + np->full_duplex = duplex; + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d" + " negotiated capability %4.4x.\n", dev->name, + duplex ? "full" : "half", np->phys[0], negotiated); + } + } + if (np->txrx_config != new_tx_mode) + writel(new_tx_mode, ioaddr + RxConfig); +} + +static void netdev_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int next_tick = 10*HZ; + + if (np->msg_level & NETIF_MSG_TIMER) { + printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x.\n", + dev->name, (int)readw(ioaddr + PHYMgmt + 10)); + } + /* This will either have a small false-trigger window or will not catch + tbusy incorrectly set when the queue is empty. */ + if (netif_queue_paused(dev) && + np->cur_tx - np->dirty_tx > 1 && + (jiffies - dev->trans_start) > TX_TIMEOUT) { + tx_timeout(dev); + } + /* It's dead Jim, no race condition. */ + if (np->rx_died) + netdev_rx(dev); + check_duplex(dev); + np->timer.expires = jiffies + next_tick; + add_timer(&np->timer); +} + +static void tx_timeout(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + printk(KERN_WARNING "%s: Transmit timed out, status %8.8x," + " resetting...\n", dev->name, (int)readl(ioaddr + IntrStatus)); + + if (np->msg_level & NETIF_MSG_TX_ERR) { + int i; + printk(KERN_DEBUG " Rx ring %p: ", np->rx_ring); + for (i = 0; i < RX_RING_SIZE; i++) + printk(" %8.8x", (unsigned int)np->rx_ring[i].status); + printk("\n"KERN_DEBUG" Tx ring %p: ", np->tx_ring); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" %8.8x", np->tx_ring[i].status); + printk("\n"); + } + + /* Stop and restart the chip's Tx processes . */ + writel(np->txrx_config & ~TxEnable, ioaddr + RxConfig); + writel(virt_to_bus(np->tx_ring + (np->dirty_tx%TX_RING_SIZE)), + ioaddr + TxRingPtr); + writel(np->txrx_config, ioaddr + RxConfig); + /* Trigger an immediate transmit demand. */ + writel(0, dev->base_addr + TxStartDemand); + + dev->trans_start = jiffies; + np->stats.tx_errors++; + return; +} + + +/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ +static void init_ring(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + np->tx_full = 0; + np->cur_rx = np->cur_tx = 0; + np->dirty_rx = np->dirty_tx = 0; + + np->rx_buf_sz = (dev->mtu <= 1532 ? PKT_BUF_SZ : dev->mtu + 4); + np->rx_head_desc = &np->rx_ring[0]; + + /* Initialize all Rx descriptors. */ + for (i = 0; i < RX_RING_SIZE; i++) { + np->rx_ring[i].ctrl_length = cpu_to_le32(np->rx_buf_sz); + np->rx_ring[i].status = 0; + np->rx_ring[i].next_desc = virt_to_le32desc(&np->rx_ring[i+1]); + np->rx_skbuff[i] = 0; + } + /* Mark the last entry as wrapping the ring. */ + np->rx_ring[i-1].next_desc = virt_to_le32desc(&np->rx_ring[0]); + + /* Fill in the Rx buffers. Handle allocation failure gracefully. */ + for (i = 0; i < RX_RING_SIZE; i++) { + struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); + np->rx_skbuff[i] = skb; + if (skb == NULL) + break; + skb->dev = dev; /* Mark as being used by this device. */ + np->rx_ring[i].buf_addr = virt_to_le32desc(skb->tail); + np->rx_ring[i].status = cpu_to_le32(DescOwn); + } + np->dirty_rx = (unsigned int)(i - RX_RING_SIZE); + + for (i = 0; i < TX_RING_SIZE; i++) { + np->tx_skbuff[i] = 0; + np->tx_ring[i].status = 0; + np->tx_ring[i].next_desc = virt_to_le32desc(&np->tx_ring[i+1]); + } + np->tx_ring[i-1].next_desc = virt_to_le32desc(&np->tx_ring[0]); + return; +} + +static int start_tx(struct sk_buff *skb, struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + unsigned entry; + + /* Block a timer-based transmit from overlapping. This happens when + packets are presumed lost, and we use this check the Tx status. */ + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + tx_timeout(dev); + return 1; + } + + /* Note: Ordering is important here, set the field with the + "ownership" bit last, and only then increment cur_tx. */ + + /* Calculate the next Tx descriptor entry. */ + entry = np->cur_tx % TX_RING_SIZE; + + np->tx_skbuff[entry] = skb; + + np->tx_ring[entry].buf_addr = virt_to_le32desc(skb->data); + np->tx_ring[entry].ctrl_length = + cpu_to_le32(TxIntrOnDone | TxNormalPkt | (skb->len << 11) | skb->len); + np->tx_ring[entry].status = cpu_to_le32(DescOwn); + np->cur_tx++; + + /* On some architectures: explicitly flushing cache lines here speeds + operation. */ + + if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1) { + np->tx_full = 1; + /* Check for a just-cleared queue. */ + if (np->cur_tx - (volatile unsigned int)np->dirty_tx + < TX_QUEUE_LEN - 2) { + np->tx_full = 0; + netif_unpause_tx_queue(dev); + } else + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); /* Typical path */ + /* Wake the potentially-idle transmit channel. */ + writel(0, dev->base_addr + TxStartDemand); + + dev->trans_start = jiffies; + + if (np->msg_level & NETIF_MSG_TX_QUEUED) { + printk(KERN_DEBUG "%s: Transmit frame #%d queued in slot %d.\n", + dev->name, np->cur_tx, entry); + } + return 0; +} + +/* The interrupt handler does all of the Rx thread work and cleans up + after the Tx thread. */ +static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) +{ + struct net_device *dev = (struct net_device *)dev_instance; + struct netdev_private *np; + long ioaddr; + int boguscnt; + +#ifndef final_version /* Can never occur. */ + if (dev == NULL) { + printk (KERN_ERR "Netdev interrupt handler(): IRQ %d for unknown " + "device.\n", irq); + return; + } +#endif + + ioaddr = dev->base_addr; + np = (struct netdev_private *)dev->priv; + boguscnt = np->max_interrupt_work; + +#if defined(__i386__) && LINUX_VERSION_CODE < 0x020300 + /* A lock to prevent simultaneous entry bug on Intel SMP machines. */ + if (test_and_set_bit(0, (void*)&dev->interrupt)) { + printk(KERN_ERR"%s: SMP simultaneous entry of an interrupt handler.\n", + dev->name); + dev->interrupt = 0; /* Avoid halting machine. */ + return; + } +#endif + + do { + u32 intr_status = readl(ioaddr + IntrStatus); + + /* Acknowledge all of the current interrupt sources ASAP. */ + writel(intr_status, ioaddr + IntrStatus); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", + dev->name, intr_status); + + if (intr_status == 0) + break; + + if (intr_status & IntrRxDone) + netdev_rx(dev); + + for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { + int entry = np->dirty_tx % TX_RING_SIZE; + int tx_status = le32_to_cpu(np->tx_ring[entry].status); + if (tx_status & DescOwn) + break; + if (np->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG "%s: Transmit done, Tx status %8.8x.\n", + dev->name, tx_status); + if (tx_status & (TxErrAbort | TxErrCarrier | TxErrLate + | TxErr16Colls | TxErrHeartbeat)) { + if (np->msg_level & NETIF_MSG_TX_ERR) + printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n", + dev->name, tx_status); + np->stats.tx_errors++; + if (tx_status & TxErrCarrier) np->stats.tx_carrier_errors++; + if (tx_status & TxErrLate) np->stats.tx_window_errors++; + if (tx_status & TxErrHeartbeat) np->stats.tx_heartbeat_errors++; +#ifdef ETHER_STATS + if (tx_status & TxErr16Colls) np->stats.collisions16++; + if (tx_status & TxErrAbort) np->stats.tx_aborted_errors++; +#else + if (tx_status & (TxErr16Colls|TxErrAbort)) + np->stats.tx_aborted_errors++; +#endif + } else { + np->stats.tx_packets++; + np->stats.collisions += tx_status & TxColls; +#if LINUX_VERSION_CODE > 0x20127 + np->stats.tx_bytes += np->tx_skbuff[entry]->len; +#endif +#ifdef ETHER_STATS + if (tx_status & TxErrDefer) np->stats.tx_deferred++; +#endif + } + /* Free the original skb. */ + dev_free_skb_irq(np->tx_skbuff[entry]); + np->tx_skbuff[entry] = 0; + } + /* Note the 4 slot hysteresis to mark the queue non-full. */ + if (np->tx_full && np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) { + /* The ring is no longer full, allow new TX entries. */ + np->tx_full = 0; + netif_resume_tx_queue(dev); + } + + /* Abnormal error summary/uncommon events handlers. */ + if (intr_status & (IntrRxErr | IntrRxEmpty | StatsMax | RxOverflow + | TxUnderrun | IntrPCIErr | NWayDone | LinkChange)) + netdev_error(dev, intr_status); + + if (--boguscnt < 0) { + printk(KERN_WARNING "%s: Too much work at interrupt, " + "status=0x%4.4x.\n", + dev->name, intr_status); + break; + } + } while (1); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", + dev->name, (int)readl(ioaddr + IntrStatus)); + +#if defined(__i386__) && LINUX_VERSION_CODE < 0x020300 + clear_bit(0, (void*)&dev->interrupt); +#endif + return; +} + +/* This routine is logically part of the interrupt handler, but separated + for clarity and better register allocation. */ +static int netdev_rx(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int entry = np->cur_rx % RX_RING_SIZE; + int boguscnt = np->dirty_rx + RX_RING_SIZE - np->cur_rx; + int refilled = 0; + + if (np->msg_level & NETIF_MSG_RX_STATUS) { + printk(KERN_DEBUG " In netdev_rx(), entry %d status %4.4x.\n", + entry, np->rx_ring[entry].status); + } + + /* If EOP is set on the next entry, it's a new packet. Send it up. */ + while ( ! (np->rx_head_desc->status & cpu_to_le32(DescOwn))) { + struct netdev_desc *desc = np->rx_head_desc; + u32 desc_status = le32_to_cpu(desc->status); + + if (np->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n", + desc_status); + if (--boguscnt < 0) + break; + if ((desc_status & RxDescWholePkt) != RxDescWholePkt) { + printk(KERN_WARNING "%s: Oversized Ethernet frame spanned " + "multiple buffers, entry %#x length %d status %4.4x!\n", + dev->name, np->cur_rx, desc_status >> 16, desc_status); + np->stats.rx_length_errors++; + } else if (desc_status & RxDescErrSum) { + /* There was a error. */ + if (np->msg_level & NETIF_MSG_RX_ERR) + printk(KERN_DEBUG " netdev_rx() Rx error was %8.8x.\n", + desc_status); + np->stats.rx_errors++; + if (desc_status & (RxErrLong|RxErrRunt)) + np->stats.rx_length_errors++; + if (desc_status & (RxErrFrame|RxErrCode)) + np->stats.rx_frame_errors++; + if (desc_status & RxErrCRC) + np->stats.rx_crc_errors++; + } else { + struct sk_buff *skb; + /* Reported length should omit the CRC. */ + u16 pkt_len = ((desc_status >> 16) & 0xfff) - 4; + +#ifndef final_version + if (np->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d" + " of %d, bogus_cnt %d.\n", + pkt_len, pkt_len, boguscnt); +#endif + /* Check if the packet is long enough to accept without copying + to a minimally-sized skbuff. */ + if (pkt_len < np->rx_copybreak + && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { + skb->dev = dev; + skb_reserve(skb, 2); /* 16 byte align the IP header */ + eth_copy_and_sum(skb, np->rx_skbuff[entry]->tail, pkt_len, 0); + skb_put(skb, pkt_len); + } else { + skb_put(skb = np->rx_skbuff[entry], pkt_len); + np->rx_skbuff[entry] = NULL; + } +#ifndef final_version /* Remove after testing. */ + /* You will want this info for the initial debug. */ + if (np->msg_level & NETIF_MSG_PKTDATA) + printk(KERN_DEBUG " Rx data %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:" + "%2.2x %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x %2.2x%2.2x " + "%d.%d.%d.%d.\n", + skb->data[0], skb->data[1], skb->data[2], skb->data[3], + skb->data[4], skb->data[5], skb->data[6], skb->data[7], + skb->data[8], skb->data[9], skb->data[10], + skb->data[11], skb->data[12], skb->data[13], + skb->data[14], skb->data[15], skb->data[16], + skb->data[17]); +#endif + skb->mac.raw = skb->data; + /* Protocol lookup disabled until verified with all kernels. */ + if (0 && ntohs(skb->mac.ethernet->h_proto) >= 0x0800) { + struct ethhdr *eth = skb->mac.ethernet; + skb->protocol = eth->h_proto; + if (desc_status & 0x1000) { + if ((dev->flags & IFF_PROMISC) && + memcmp(eth->h_dest, dev->dev_addr, ETH_ALEN)) + skb->pkt_type = PACKET_OTHERHOST; + } else if (desc_status & 0x2000) + skb->pkt_type = PACKET_BROADCAST; + else if (desc_status & 0x4000) + skb->pkt_type = PACKET_MULTICAST; + } else + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); + dev->last_rx = jiffies; + np->stats.rx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + np->stats.rx_bytes += pkt_len; +#endif + } + entry = (++np->cur_rx) % RX_RING_SIZE; + np->rx_head_desc = &np->rx_ring[entry]; + } + + /* Refill the Rx ring buffers. */ + for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) { + struct sk_buff *skb; + entry = np->dirty_rx % RX_RING_SIZE; + if (np->rx_skbuff[entry] == NULL) { + skb = dev_alloc_skb(np->rx_buf_sz); + np->rx_skbuff[entry] = skb; + if (skb == NULL) + break; /* Better luck next round. */ + skb->dev = dev; /* Mark as being used by this device. */ + np->rx_ring[entry].buf_addr = virt_to_le32desc(skb->tail); + } + np->rx_ring[entry].ctrl_length = cpu_to_le32(np->rx_buf_sz); + np->rx_ring[entry].status = cpu_to_le32(DescOwn); + refilled++; + } + + /* Restart Rx engine if stopped. */ + if (refilled) { /* Perhaps "&& np->rx_died" */ + writel(0, dev->base_addr + RxStartDemand); + np->rx_died = 0; + } + return refilled; +} + +static void netdev_error(struct net_device *dev, int intr_status) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (intr_status & (LinkChange | NWayDone)) { + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_NOTICE "%s: Link changed: Autonegotiation advertising" + " %4.4x partner %4.4x.\n", dev->name, + mdio_read(dev, np->phys[0], 4), + mdio_read(dev, np->phys[0], 5)); + /* Clear sticky bit first. */ + readw(ioaddr + PHYMgmt + 2); + if (readw(ioaddr + PHYMgmt + 2) & 0x0004) + netif_link_up(dev); + else + netif_link_down(dev); + check_duplex(dev); + } + if ((intr_status & TxUnderrun) + && (np->txrx_config & TxThreshold) != TxThreshold) { + np->txrx_config += TxThresholdInc; + writel(np->txrx_config, ioaddr + RxConfig); + np->stats.tx_fifo_errors++; + } + if (intr_status & IntrRxEmpty) { + printk(KERN_WARNING "%s: Out of receive buffers: no free memory.\n", + dev->name); + /* Refill Rx descriptors */ + np->rx_died = 1; + netdev_rx(dev); + } + if (intr_status & RxOverflow) { + printk(KERN_WARNING "%s: Receiver overflow.\n", dev->name); + np->stats.rx_over_errors++; + netdev_rx(dev); /* Refill Rx descriptors */ + get_stats(dev); /* Empty dropped counter. */ + } + if (intr_status & StatsMax) { + get_stats(dev); + } + if ((intr_status & ~(LinkChange|NWayDone|StatsMax|TxUnderrun|RxOverflow + |TxEarly|RxEarly|0x001e)) + && (np->msg_level & NETIF_MSG_DRV)) + printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n", + dev->name, intr_status); + /* Hmmmmm, it's not clear how to recover from PCI faults. */ + if (intr_status & IntrPCIErr) { + const char *const pcierr[4] = + { "Parity Error", "Master Abort", "Target Abort", "Unknown Error" }; + if (np->msg_level & NETIF_MSG_DRV) + printk(KERN_WARNING "%s: PCI Bus %s, %x.\n", + dev->name, pcierr[(intr_status>>11) & 3], intr_status); + } +} + +/* We do not bother to spinlock statistics. + A window only exists if we have non-atomic adds, the error counts are + typically zero, and statistics are non-critical. */ +static struct net_device_stats *get_stats(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + unsigned int rxerrs = readl(ioaddr + RxErrCnts); + unsigned int txerrs = readl(ioaddr + TxErrCnts); + + /* The chip only need report frames silently dropped. */ + np->stats.rx_crc_errors += rxerrs >> 16; + np->stats.rx_missed_errors += rxerrs & 0xffff; + + /* These stats are required when the descriptor is closed before Tx. */ + np->stats.tx_aborted_errors += txerrs >> 24; + np->stats.tx_window_errors += (txerrs >> 16) & 0xff; + np->stats.collisions += txerrs & 0xffff; + + return &np->stats; +} + +/* Big-endian AUTODIN II ethernet CRC calculations. + This is slow but compact code. Do not use this routine for bulk data, + use a table-based routine instead. + This is common code and may be in the kernel with Linux 2.5+. +*/ +static unsigned const ethernet_polynomial = 0x04c11db7U; +static inline u32 ether_crc(int length, unsigned char *data) +{ + u32 crc = ~0; + + while(--length >= 0) { + unsigned char current_octet = *data++; + int bit; + for (bit = 0; bit < 8; bit++, current_octet >>= 1) + crc = (crc << 1) ^ + ((crc < 0) ^ (current_octet & 1) ? ethernet_polynomial : 0); + } + return crc; +} + +static void set_rx_mode(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + u32 mc_filter[2]; /* Multicast hash filter */ + u32 rx_mode; + + if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ + /* Unconditionally log net taps. */ + printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); + mc_filter[1] = mc_filter[0] = ~0; + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptAllPhys + | AcceptMyPhys; + } else if ((dev->mc_count > np->multicast_filter_limit) + || (dev->flags & IFF_ALLMULTI)) { + /* Too many to match, or accept all multicasts. */ + mc_filter[1] = mc_filter[0] = ~0; + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; + } else { + struct dev_mc_list *mclist; + int i; + mc_filter[1] = mc_filter[0] = 0; + for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; + i++, mclist = mclist->next) { + set_bit((ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26) & 0x3f, + mc_filter); + } + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; + } + if (mc_filter[0] != np->mcast_filter[0] || + mc_filter[1] != np->mcast_filter[1]) { + writel(mc_filter[0], ioaddr + MulticastFilter0); + writel(mc_filter[1], ioaddr + MulticastFilter1); + np->mcast_filter[0] = mc_filter[0]; + np->mcast_filter[1] = mc_filter[1]; + } + if ((np->txrx_config & RxFilter) != rx_mode) { + np->txrx_config &= ~RxFilter; + np->txrx_config |= rx_mode; + writel(np->txrx_config, ioaddr + RxConfig); + } +} + +/* + Handle user-level ioctl() calls. + We must use two numeric constants as the key because some clueless person + changed the value for the symbolic name. +*/ +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + u16 *data = (u16 *)&rq->ifr_data; + u32 *data32 = (void *)&rq->ifr_data; + + switch(cmd) { + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ + data[0] = np->phys[0]; + /* Fall Through */ + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + data[3] = mdio_read(dev, data[0], data[1]); + return 0; + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (data[0] == np->phys[0]) { + u16 value = data[2]; + switch (data[1]) { + case 0: + /* Check for autonegotiation on or reset. */ + np->medialock = (value & 0x9000) ? 0 : 1; + if (np->medialock) + np->full_duplex = (value & 0x0100) ? 1 : 0; + break; + case 4: np->advertising = value; break; + } + /* Perhaps check_duplex(dev), depending on chip semantics. */ + } + mdio_write(dev, data[0], data[1], data[2]); + return 0; + case SIOCGPARAMS: + data32[0] = np->msg_level; + data32[1] = np->multicast_filter_limit; + data32[2] = np->max_interrupt_work; + data32[3] = np->rx_copybreak; + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + np->msg_level = data32[0]; + np->multicast_filter_limit = data32[1]; + np->max_interrupt_work = data32[2]; + np->rx_copybreak = data32[3]; + return 0; + default: + return -EOPNOTSUPP; + } +} + +static int netdev_close(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + netif_stop_tx_queue(dev); + + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk(KERN_DEBUG "%s: Shutting down ethercard, status was %8.8x.\n", + dev->name, (int)readl(ioaddr + RxConfig)); + printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", + dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx); + } + + /* Disable interrupts by clearing the interrupt mask. */ + writel(0x0000, ioaddr + IntrEnable); + + /* Stop the chip's Tx and Rx processes. */ + np->txrx_config = 0; + writel(0, ioaddr + RxConfig); + + del_timer(&np->timer); + +#ifdef __i386__ + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk("\n"KERN_DEBUG" Tx ring at %8.8x:\n", + (int)virt_to_bus(np->tx_ring)); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" #%d desc. %x %x %8.8x.\n", + i, np->tx_ring[i].status, np->tx_ring[i].ctrl_length, + np->tx_ring[i].buf_addr); + printk("\n"KERN_DEBUG " Rx ring %8.8x:\n", + (int)virt_to_bus(np->rx_ring)); + for (i = 0; i < RX_RING_SIZE; i++) { + printk(KERN_DEBUG " #%d desc. %4.4x %4.4x %8.8x\n", + i, np->rx_ring[i].status, np->rx_ring[i].ctrl_length, + np->rx_ring[i].buf_addr); + } + } +#endif /* __i386__ debugging only */ + + free_irq(dev->irq, dev); + + /* Free all the skbuffs in the Rx queue. */ + for (i = 0; i < RX_RING_SIZE; i++) { + np->rx_ring[i].status = 0; + np->rx_ring[i].buf_addr = 0xBADF00D0; /* An invalid address. */ + if (np->rx_skbuff[i]) { +#if LINUX_VERSION_CODE < 0x20100 + np->rx_skbuff[i]->free = 1; +#endif + dev_free_skb(np->rx_skbuff[i]); + } + np->rx_skbuff[i] = 0; + } + for (i = 0; i < TX_RING_SIZE; i++) { + if (np->tx_skbuff[i]) + dev_free_skb(np->tx_skbuff[i]); + np->tx_skbuff[i] = 0; + } + + MOD_DEC_USE_COUNT; + + return 0; +} + +static int netdev_pwr_event(void *dev_instance, int event) +{ + struct net_device *dev = dev_instance; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_ATTACH: + MOD_INC_USE_COUNT; + break; + case DRV_SUSPEND: + /* Disable interrupts, stop Tx and Rx. */ + writel(0, ioaddr + IntrEnable); + writel(0, ioaddr + RxConfig); + break; + case DRV_RESUME: + /* This is incomplete: the actions are very chip specific. */ + set_rx_mode(dev); + writel(np->intr_enable, ioaddr + IntrEnable); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + /* Some, but not all, kernel versions close automatically. */ + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + unregister_netdev(dev); + release_region(dev->base_addr, pci_id_tbl[np->chip_id].io_size); +#ifndef USE_IO_OPS + iounmap((char *)dev->base_addr); +#endif + for (devp = &root_net_dev; *devp; devp = next) { + next = &((struct netdev_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (np->priv_addr) + kfree(np->priv_addr); + kfree(dev); + MOD_DEC_USE_COUNT; + break; + } + } + + return 0; +} + + +#ifdef MODULE +int init_module(void) +{ + if (debug >= NETIF_MSG_DRV) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return pci_drv_register(&myson803_drv_id, NULL); +} + +void cleanup_module(void) +{ + struct net_device *next_dev; + + pci_drv_unregister(&myson803_drv_id); + + /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ + while (root_net_dev) { + struct netdev_private *np = (void *)(root_net_dev->priv); + unregister_netdev(root_net_dev); +#ifdef USE_IO_OPS + release_region(root_net_dev->base_addr, + pci_id_tbl[np->chip_id].io_size); +#else + iounmap((char *)(root_net_dev->base_addr)); +#endif + next_dev = np->next_module; + if (np->priv_addr) + kfree(np->priv_addr); + kfree(root_net_dev); + root_net_dev = next_dev; + } +} + +#endif /* MODULE */ + +/* + * Local variables: + * compile-command: "make KERNVER=`uname -r` myson803.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c myson803.c" + * simple-compile-command: "gcc -DMODULE -O6 -c myson803.c" + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ diff --git a/linux/src/drivers/net/natsemi.c b/linux/src/drivers/net/natsemi.c new file mode 100644 index 0000000..0d98bea --- /dev/null +++ b/linux/src/drivers/net/natsemi.c @@ -0,0 +1,1448 @@ +/* natsemi.c: A Linux PCI Ethernet driver for the NatSemi DP83810 series. */ +/* + Written/copyright 1999-2003 by Donald Becker. + + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. License for under other terms may be + available. Contact the original author for details. + + The original author may be reached as becker@scyld.com, or at + Scyld Computing Corporation + 914 Bay Ridge Road, Suite 220 + Annapolis MD 21403 + + Support information and updates available at + http://www.scyld.com/network/natsemi.html + The information and support mailing lists are based at + http://www.scyld.com/mailman/listinfo/ +*/ + +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"natsemi.c:v1.17a 8/09/2003 Written by Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/network/natsemi.html\n"; +/* Updated to recommendations in pci-skeleton v2.11. */ + +/* Automatically extracted configuration info: +probe-func: natsemi_probe +config-in: tristate 'National Semiconductor DP8381x series PCI Ethernet support' CONFIG_NATSEMI + +c-help-name: National Semiconductor DP8381x series PCI Ethernet support +c-help-symbol: CONFIG_NATSEMI +c-help: This driver is for the National Semiconductor DP83810 series, +c-help: including the 83815 chip. +c-help: Usage information and updates are available from +c-help: http://www.scyld.com/network/natsemi.html +*/ + +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ + +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; + +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ +static int max_interrupt_work = 20; + +/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). + This chip uses a 512 element hash table based on the Ethernet CRC. + Some chip versions are reported to have unreliable multicast filter + circuitry. To work around an observed problem set this value to '0', + which will immediately switch to Rx-all-multicast. +*/ +static int multicast_filter_limit = 100; + +/* Set the copy breakpoint for the copy-only-tiny-frames scheme. + Setting to > 1518 effectively disables this feature. + This chip can only receive into aligned buffers, so architectures such + as the Alpha AXP might benefit from a copy-align. +*/ +static int rx_copybreak = 0; + +/* Used to pass the media type, etc. + Both 'options[]' and 'full_duplex[]' should exist for driver + interoperability, however setting full_duplex[] is deprecated. + The media type is usually passed in 'options[]'. + The default is autonegotation for speed and duplex. + This should rarely be overridden. + Use option values 0x10/0x20 for 10Mbps, 0x100,0x200 for 100Mbps. + Use option values 0x10 and 0x100 for forcing half duplex fixed speed. + Use option values 0x20 and 0x200 for forcing full duplex operation. +*/ +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; + +/* Operational parameters that are set at compile time. */ + +/* Keep the ring sizes a power of two for compile efficiency. + Understand the implications before changing these settings! + The compiler will convert <unsigned>'%'<2^N> into a bit mask. + Making the Tx ring too large decreases the effectiveness of channel + bonding and packet priority. + Too-large receive rings waste memory and confound network buffer limits. */ +#define TX_RING_SIZE 16 +#define TX_QUEUE_LEN 10 /* Limit ring entries actually used, min 4. */ +#define RX_RING_SIZE 32 + +/* Operational parameters that usually are not changed. */ +/* Time in jiffies before concluding the transmitter is hung. + Re-autonegotiation may take up to 3 seconds. + */ +#define TX_TIMEOUT (6*HZ) + +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. This is not a limit, + but a way to keep a consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 + +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif + +/* Include files, designed to support most kernel versions 2.0.0 and later. */ +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + +#include <linux/version.h> +#if defined(MODVERSIONS) +#include <linux/modversions.h> +#endif +#include <linux/module.h> + +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else +#include <linux/malloc.h> +#endif +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <asm/processor.h> /* Processor type for cache alignment. */ +#include <asm/bitops.h> +#include <asm/io.h> + +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif + +/* Condensed operations for readability. */ +#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) +#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) + +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif + +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); +MODULE_DESCRIPTION("National Semiconductor DP83810 series PCI Ethernet driver"); +MODULE_LICENSE("GPL"); +MODULE_PARM(debug, "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(rx_copybreak, "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(multicast_filter_limit, "i"); +MODULE_PARM(max_interrupt_work, "i"); +MODULE_PARM_DESC(debug, "Driver message level (0-31)"); +MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex"); +MODULE_PARM_DESC(max_interrupt_work, + "Driver maximum events handled per interrupt"); +MODULE_PARM_DESC(full_duplex, + "Non-zero to force full duplex, non-negotiated link " + "(deprecated)."); +MODULE_PARM_DESC(rx_copybreak, + "Breakpoint in bytes for copy-only-tiny-frames"); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast addresses before switching to Rx-all-multicast"); + +/* + Theory of Operation + +I. Board Compatibility + +This driver is designed for National Semiconductor DP83815 PCI Ethernet NIC. +It also works with other chips in in the DP83810 series. +The most common board is the Netgear FA311 using the 83815. + +II. Board-specific settings + +This driver requires the PCI interrupt line to be valid. +It honors the EEPROM-set values. + +III. Driver operation + +IIIa. Ring buffers + +This driver uses two statically allocated fixed-size descriptor lists +formed into rings by a branch from the final descriptor to the beginning of +the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. +The NatSemi design uses a 'next descriptor' pointer that the driver forms +into a list, thus rings can be arbitrarily sized. Before changing the +ring sizes you should understand the flow and cache effects of the +full/available/empty hysteresis. + +IIIb/c. Transmit/Receive Structure + +This driver uses a zero-copy receive and transmit scheme. +The driver allocates full frame size skbuffs for the Rx ring buffers at +open() time and passes the skb->data field to the chip as receive data +buffers. When an incoming frame is less than RX_COPYBREAK bytes long, +a fresh skbuff is allocated and the frame is copied to the new skbuff. +When the incoming frame is larger, the skbuff is passed directly up the +protocol stack. Buffers consumed this way are replaced by newly allocated +skbuffs in a later phase of receives. + +The RX_COPYBREAK value is chosen to trade-off the memory wasted by +using a full-sized skbuff for small frames vs. the copying costs of larger +frames. New boards are typically used in generously configured machines +and the underfilled buffers have negligible impact compared to the benefit of +a single allocation size, so the default value of zero results in never +copying packets. When copying is done, the cost is usually mitigated by using +a combined copy/checksum routine. Copying also preloads the cache, which is +most useful with small frames. + +A subtle aspect of the operation is that unaligned buffers are not permitted +by the hardware. Thus the IP header at offset 14 in an ethernet frame isn't +longword aligned for further processing. On copies frames are put into the +skbuff at an offset of "+2", 16-byte aligning the IP header. + +IIId. Synchronization + +The driver runs as two independent, single-threaded flows of control. One +is the send-packet routine, which enforces single-threaded use by the +dev->tbusy flag. The other thread is the interrupt handler, which is single +threaded by the hardware and interrupt handling software. + +The send packet thread has partial control over the Tx ring and 'dev->tbusy' +flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next +queue slot is empty, it clears the tbusy flag when finished otherwise it sets +the 'lp->tx_full' flag. + +The interrupt handler has exclusive control over the Rx ring and records stats +from the Tx ring. After reaping the stats, it marks the Tx queue entry as +empty by incrementing the dirty_tx mark. Iff the 'lp->tx_full' flag is set, it +clears both the tx_full and tbusy flags. + +IV. Notes + +The older dp83810 chips are so uncommon that support is not relevant. +No NatSemi datasheet was publically available at the initial release date, +but the dp83815 has now been published. + +IVb. References + +http://www.scyld.com/expert/100mbps.html +http://www.scyld.com/expert/NWay.html + + +IVc. Errata + +Qustionable multicast filter implementation. +The EEPROM format is obviously the result of a chip bug. +*/ + + + +static void *natsemi_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +static int power_event(void *dev_instance, int event); +#ifdef USE_IO_OPS +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_IO | PCI_ADDR0) +#else +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_MEM | PCI_ADDR1) +#endif + +static struct pci_id_info pci_id_tbl[] = { + {"Netgear FA311 (NatSemi DP83815)", + { 0x0020100B, 0xffffffff, 0xf3111385, 0xffffffff, }, + PCI_IOTYPE, 256, 0}, + {"NatSemi DP83815", { 0x0020100B, 0xffffffff }, + PCI_IOTYPE, 256, 0}, + {0,}, /* 0 terminated list. */ +}; + +struct drv_id_info natsemi_drv_id = { + "natsemi", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, + natsemi_probe1, power_event }; + +/* Offsets to the device registers. + Unlike software-only systems, device drivers interact with complex hardware. + It's not useful to define symbolic names for every register bit in the + device. Please do not change these names without good reason. +*/ +enum register_offsets { + ChipCmd=0x00, ChipConfig=0x04, EECtrl=0x08, PCIBusCfg=0x0C, + IntrStatus=0x10, IntrMask=0x14, IntrEnable=0x18, + TxRingPtr=0x20, TxConfig=0x24, + RxRingPtr=0x30, RxConfig=0x34, ClkRunCtrl=0x3C, + WOLCmd=0x40, PauseCmd=0x44, RxFilterAddr=0x48, RxFilterData=0x4C, + BootRomAddr=0x50, BootRomData=0x54, ChipRevReg=0x58, + StatsCtrl=0x5C, StatsData=0x60, + RxPktErrs=0x60, RxMissed=0x68, RxCRCErrs=0x64, + NS_Xcvr_Mgmt = 0x80, NS_MII_BMCR=0x80, NS_MII_BMSR=0x84, + NS_MII_Advert=0x90, NS_MIILinkPartner=0x94, +}; + +/* Bits in ChipCmd. */ +enum ChipCmdBits { + ChipReset=0x100, SoftIntr=0x80, RxReset=0x20, TxReset=0x10, + RxOff=0x08, RxOn=0x04, TxOff=0x02, TxOn=0x01, +}; + +/* Bits in ChipConfig. */ +enum ChipConfigBits { + CfgLinkGood=0x80000000, CfgFDX=0x20000000, +}; + +/* Bits in the interrupt status/mask registers. */ +enum intr_status_bits { + IntrRxDone=0x0001, IntrRxIntr=0x0002, IntrRxErr=0x0004, IntrRxEarly=0x0008, + IntrRxIdle=0x0010, IntrRxOverrun=0x0020, + IntrTxDone=0x0040, IntrTxIntr=0x0080, IntrTxErr=0x0100, + IntrTxIdle=0x0200, IntrTxUnderrun=0x0400, + StatsMax=0x0800, IntrDrv=0x1000, WOLPkt=0x2000, LinkChange=0x4000, + RxStatusOverrun=0x10000, + RxResetDone=0x1000000, TxResetDone=0x2000000, + IntrPCIErr=0x00f00000, + IntrNormalSummary=0x0251, IntrAbnormalSummary=0xED20, +}; + +/* Bits in the RxMode register. */ +enum rx_mode_bits { + AcceptErr=0x20, AcceptRunt=0x10, + AcceptBroadcast=0xC0000000, + AcceptMulticast=0x00200000, AcceptAllMulticast=0x20000000, + AcceptAllPhys=0x10000000, AcceptMyPhys=0x08000000, +}; + +/* The Rx and Tx buffer descriptors. */ +/* Note that using only 32 bit fields simplifies conversion to big-endian + architectures. */ +struct netdev_desc { + u32 next_desc; + s32 cmd_status; + u32 buf_addr; + u32 software_use; +}; + +/* Bits in network_desc.status */ +enum desc_status_bits { + DescOwn=0x80000000, DescMore=0x40000000, DescIntr=0x20000000, + DescNoCRC=0x10000000, + DescPktOK=0x08000000, RxTooLong=0x00400000, +}; + +#define PRIV_ALIGN 15 /* Required alignment mask */ +struct netdev_private { + /* Descriptor rings first for alignment. */ + struct netdev_desc rx_ring[RX_RING_SIZE]; + struct netdev_desc tx_ring[TX_RING_SIZE]; + struct net_device *next_module; /* Link for devices of this type. */ + void *priv_addr; /* Unaligned address for kfree */ + const char *product_name; + /* The addresses of receive-in-place skbuffs. */ + struct sk_buff* rx_skbuff[RX_RING_SIZE]; + /* The saved address of a sent-in-place packet/buffer, for later free(). */ + struct sk_buff* tx_skbuff[TX_RING_SIZE]; + struct net_device_stats stats; + struct timer_list timer; /* Media monitoring timer. */ + /* Frequently used values: keep some adjacent for cache effect. */ + int msg_level; + int chip_id, drv_flags; + struct pci_dev *pci_dev; + long in_interrupt; /* Word-long for SMP locks. */ + int max_interrupt_work; + int intr_enable; + unsigned int restore_intr_enable:1; /* Set if temporarily masked. */ + unsigned int rx_q_empty:1; /* Set out-of-skbuffs. */ + + struct netdev_desc *rx_head_desc; + unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ + unsigned int rx_buf_sz; /* Based on MTU+slack. */ + int rx_copybreak; + + unsigned int cur_tx, dirty_tx; + unsigned int tx_full:1; /* The Tx queue is full. */ + /* These values keep track of the transceiver/media in use. */ + unsigned int full_duplex:1; /* Full-duplex operation requested. */ + unsigned int duplex_lock:1; + unsigned int medialock:1; /* Do not sense media. */ + unsigned int default_port; /* Last dev->if_port value. */ + /* Rx filter. */ + u32 cur_rx_mode; + u16 rx_filter[32]; + int multicast_filter_limit; + /* FIFO and PCI burst thresholds. */ + int tx_config, rx_config; + /* MII transceiver section. */ + u16 advertising; /* NWay media advertisement */ +}; + +static int eeprom_read(long ioaddr, int location); +static int mdio_read(struct net_device *dev, int phy_id, int location); +static void mdio_write(struct net_device *dev, int phy_id, int location, + int value); +static int netdev_open(struct net_device *dev); +static void check_duplex(struct net_device *dev); +static void netdev_timer(unsigned long data); +static void tx_timeout(struct net_device *dev); +static int rx_ring_fill(struct net_device *dev); +static void init_ring(struct net_device *dev); +static int start_tx(struct sk_buff *skb, struct net_device *dev); +static void intr_handler(int irq, void *dev_instance, struct pt_regs *regs); +static void netdev_error(struct net_device *dev, int intr_status); +static int netdev_rx(struct net_device *dev); +static void netdev_error(struct net_device *dev, int intr_status); +static void set_rx_mode(struct net_device *dev); +static struct net_device_stats *get_stats(struct net_device *dev); +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +static int netdev_close(struct net_device *dev); + + + +/* A list of our installed devices, for removing the driver module. */ +static struct net_device *root_net_dev = NULL; + +#ifndef MODULE +int natsemi_probe(struct net_device *dev) +{ + if (pci_drv_register(&natsemi_drv_id, dev) < 0) + return -ENODEV; + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return 0; +} +#endif + +static void *natsemi_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int card_idx) +{ + struct net_device *dev; + struct netdev_private *np; + void *priv_mem; + int i, option = card_idx < MAX_UNITS ? options[card_idx] : 0; + int prev_eedata; + + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; + + /* Perhaps NETIF_MSG_PROBE */ + printk(KERN_INFO "%s: %s at 0x%lx, ", + dev->name, pci_id_tbl[chip_idx].name, ioaddr); + + /* Work around the dropped serial bit. */ + prev_eedata = eeprom_read(ioaddr, 6); + for (i = 0; i < 3; i++) { + int eedata = eeprom_read(ioaddr, i + 7); + dev->dev_addr[i*2] = (eedata << 1) + (prev_eedata >> 15); + dev->dev_addr[i*2+1] = eedata >> 7; + prev_eedata = eedata; + } + for (i = 0; i < 5; i++) + printk("%2.2x:", dev->dev_addr[i]); + printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq); + + /* Reset the chip to erase previous misconfiguration. */ + writel(ChipReset, ioaddr + ChipCmd); + + /* Make certain elements e.g. descriptor lists are aligned. */ + priv_mem = kmalloc(sizeof(*np) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; + + dev->base_addr = ioaddr; + dev->irq = irq; + + dev->priv = np = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); + memset(np, 0, sizeof(*np)); + np->priv_addr = priv_mem; + + np->next_module = root_net_dev; + root_net_dev = dev; + + np->pci_dev = pdev; + np->chip_id = chip_idx; + np->drv_flags = pci_id_tbl[chip_idx].drv_flags; + np->msg_level = (1 << debug) - 1; + np->rx_copybreak = rx_copybreak; + np->max_interrupt_work = max_interrupt_work; + np->multicast_filter_limit = multicast_filter_limit; + + if (dev->mem_start) + option = dev->mem_start; + + /* 0x10/0x20/0x100/0x200 set forced speed&duplex modes. */ + if (option > 0) { + if (option & 0x220) + np->full_duplex = 1; + np->default_port = option & 0x3ff; + if (np->default_port & 0x330) { + np->medialock = 1; + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO " Forcing %dMbs %s-duplex operation.\n", + (option & 0x300 ? 100 : 10), + (np->full_duplex ? "full" : "half")); + writew(((option & 0x300) ? 0x2000 : 0) | /* 100mbps? */ + (np->full_duplex ? 0x0100 : 0), /* Full duplex? */ + ioaddr + NS_MII_BMCR); + } + } + if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) + np->full_duplex = 1; + + if (np->full_duplex) { + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO "%s: Set to forced full duplex, autonegotiation" + " disabled.\n", dev->name); + np->duplex_lock = 1; + } + + /* The chip-specific entries in the device structure. */ + dev->open = &netdev_open; + dev->hard_start_xmit = &start_tx; + dev->stop = &netdev_close; + dev->get_stats = &get_stats; + dev->set_multicast_list = &set_rx_mode; + dev->do_ioctl = &mii_ioctl; + + /* Override the PME enable from the EEPROM. */ + writel(0x8000, ioaddr + ClkRunCtrl); + + if ((readl(ioaddr + ChipConfig) & 0xe000) != 0xe000) { + u32 chip_config = readl(ioaddr + ChipConfig); + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO "%s: Transceiver default autonegotiation %s " + "10%s %s duplex.\n", + dev->name, chip_config & 0x2000 ? "enabled, advertise" + : "disabled, force", chip_config & 0x4000 ? "0" : "", + chip_config & 0x8000 ? "full" : "half"); + } + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO "%s: Transceiver status 0x%4.4x partner %4.4x.\n", + dev->name, (int)readl(ioaddr + NS_MII_BMSR), + (int)readl(ioaddr + NS_MIILinkPartner)); + + return dev; +} + + +/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. + The EEPROM code is for the common 93c06/46 EEPROMs with 6 bit addresses. + Update to the code in other drivers for 8/10 bit addresses. +*/ + +/* Delay between EEPROM clock transitions. + This "delay" forces out buffered PCI writes, which is sufficient to meet + the timing requirements of most EEPROMs. +*/ +#define eeprom_delay(ee_addr) readl(ee_addr) + +enum EEPROM_Ctrl_Bits { + EE_ShiftClk=0x04, EE_DataIn=0x01, EE_ChipSelect=0x08, EE_DataOut=0x02, +}; +#define EE_Write0 (EE_ChipSelect) +#define EE_Write1 (EE_ChipSelect | EE_DataIn) + +/* The EEPROM commands include the preamble. */ +enum EEPROM_Cmds { + EE_WriteCmd=(5 << 6), EE_ReadCmd=(6 << 6), EE_EraseCmd=(7 << 6), +}; + +static int eeprom_read(long addr, int location) +{ + int i; + int retval = 0; + long ee_addr = addr + EECtrl; + int read_cmd = location | EE_ReadCmd; + writel(EE_Write0, ee_addr); + + /* Shift the read command bits out. */ + for (i = 10; i >= 0; i--) { + short dataval = (read_cmd & (1 << i)) ? EE_Write1 : EE_Write0; + writel(dataval, ee_addr); + eeprom_delay(ee_addr); + writel(dataval | EE_ShiftClk, ee_addr); + eeprom_delay(ee_addr); + } + writel(EE_ChipSelect, ee_addr); + eeprom_delay(ee_addr); + + for (i = 0; i < 16; i++) { + writel(EE_ChipSelect | EE_ShiftClk, ee_addr); + eeprom_delay(ee_addr); + retval |= (readl(ee_addr) & EE_DataOut) ? 1 << i : 0; + writel(EE_ChipSelect, ee_addr); + eeprom_delay(ee_addr); + } + + /* Terminate the EEPROM access. */ + writel(EE_Write0, ee_addr); + writel(0, ee_addr); + return retval; +} + +/* MII transceiver control section. + The 83815 series has an internal, directly accessable transceiver. + We present the management registers as if they were MII connected. */ + +static int mdio_read(struct net_device *dev, int phy_id, int location) +{ + if (phy_id == 1 && location < 32) + return readw(dev->base_addr + NS_Xcvr_Mgmt + (location<<2)); + else + return 0xffff; +} + +static void mdio_write(struct net_device *dev, int phy_id, int location, + int value) +{ + if (phy_id == 1 && location < 32) + writew(value, dev->base_addr + NS_Xcvr_Mgmt + (location<<2)); +} + + +static int netdev_open(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int i; + + /* We do not need to reset the '815 chip. */ + + MOD_INC_USE_COUNT; + + if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; + return -EAGAIN; + } + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: netdev_open() irq %d.\n", + dev->name, dev->irq); + + init_ring(dev); + + writel(virt_to_bus(np->rx_ring), ioaddr + RxRingPtr); + writel(virt_to_bus(np->tx_ring), ioaddr + TxRingPtr); + + for (i = 0; i < 6; i += 2) { + writel(i, ioaddr + RxFilterAddr); + writel(dev->dev_addr[i] + (dev->dev_addr[i+1] << 8), + ioaddr + RxFilterData); + } + + /* Initialize other registers. */ + /* See the datasheet for this correction. */ + if (readl(ioaddr + ChipRevReg) == 0x0203) { + writew(0x0001, ioaddr + 0xCC); + writew(0x18C9, ioaddr + 0xE4); + writew(0x0000, ioaddr + 0xFC); + writew(0x5040, ioaddr + 0xF4); + writew(0x008C, ioaddr + 0xF8); + } + + /* Configure the PCI bus bursts and FIFO thresholds. */ + /* Configure for standard, in-spec Ethernet. */ + + if (readl(ioaddr + ChipConfig) & CfgFDX) { /* Full duplex */ + np->tx_config = 0xD0801002; + np->rx_config = 0x10000020; + } else { + np->tx_config = 0x10801002; + np->rx_config = 0x0020; + } + if (dev->mtu > 1500) + np->rx_config |= 0x08000000; + writel(np->tx_config, ioaddr + TxConfig); + writel(np->rx_config, ioaddr + RxConfig); + + if (dev->if_port == 0) + dev->if_port = np->default_port; + + np->in_interrupt = 0; + + check_duplex(dev); + set_rx_mode(dev); + netif_start_tx_queue(dev); + + /* Enable interrupts by setting the interrupt mask. */ + np->intr_enable = IntrNormalSummary | IntrAbnormalSummary | 0x1f; + writel(np->intr_enable, ioaddr + IntrMask); + writel(1, ioaddr + IntrEnable); + + writel(RxOn | TxOn, ioaddr + ChipCmd); + writel(4, ioaddr + StatsCtrl); /* Clear Stats */ + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Done netdev_open(), status: %x.\n", + dev->name, (int)readl(ioaddr + ChipCmd)); + + /* Set the timer to check for link beat. */ + init_timer(&np->timer); + np->timer.expires = jiffies + 3*HZ; + np->timer.data = (unsigned long)dev; + np->timer.function = &netdev_timer; /* timer handler */ + add_timer(&np->timer); + + return 0; +} + +static void check_duplex(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int duplex; + + if (np->duplex_lock) + return; + duplex = readl(ioaddr + ChipConfig) & 0x20000000 ? 1 : 0; + if (np->full_duplex != duplex) { + np->full_duplex = duplex; + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO "%s: Setting %s-duplex based on negotiated link" + " capability.\n", dev->name, + duplex ? "full" : "half"); + if (duplex) { + np->rx_config |= 0x10000000; + np->tx_config |= 0xC0000000; + } else { + np->rx_config &= ~0x10000000; + np->tx_config &= ~0xC0000000; + } + writel(np->tx_config, ioaddr + TxConfig); + writel(np->rx_config, ioaddr + RxConfig); + } +} + +static void netdev_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int next_tick = 10*HZ; + + if (np->msg_level & NETIF_MSG_TIMER) + printk(KERN_DEBUG "%s: Driver monitor timer tick, status %8.8x.\n", + dev->name, (int)readl(ioaddr + IntrStatus)); + if (np->rx_q_empty) { + /* Trigger an interrupt to refill. */ + writel(SoftIntr, ioaddr + ChipCmd); + } + /* This will either have a small false-trigger window or will not catch + tbusy incorrectly set when the queue is empty. */ + if (netif_queue_paused(dev) && + np->cur_tx - np->dirty_tx > 1 && + (jiffies - dev->trans_start) > TX_TIMEOUT) { + tx_timeout(dev); + } + check_duplex(dev); + np->timer.expires = jiffies + next_tick; + add_timer(&np->timer); +} + +static void tx_timeout(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + printk(KERN_WARNING "%s: Transmit timed out, status %8.8x," + " resetting...\n", dev->name, (int)readl(ioaddr + TxRingPtr)); + + if (np->msg_level & NETIF_MSG_TX_ERR) { + int i; + printk(KERN_DEBUG " Rx ring %p: ", np->rx_ring); + for (i = 0; i < RX_RING_SIZE; i++) + printk(" %8.8x", (unsigned int)np->rx_ring[i].cmd_status); + printk("\n"KERN_DEBUG" Tx ring %p: ", np->tx_ring); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" %4.4x", np->tx_ring[i].cmd_status); + printk("\n"); + } + + /* Reinitialize the hardware here. */ + /* Stop and restart the chip's Tx processes . */ + + /* Trigger an immediate transmit demand. */ + + dev->trans_start = jiffies; + np->stats.tx_errors++; + return; +} + +/* Refill the Rx ring buffers, returning non-zero if not full. */ +static int rx_ring_fill(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + unsigned int entry; + + for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) { + entry = np->dirty_rx % RX_RING_SIZE; + if (np->rx_skbuff[entry] == NULL) { + struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); + np->rx_skbuff[entry] = skb; + if (skb == NULL) + return 1; /* Better luck next time. */ + skb->dev = dev; /* Mark as being used by this device. */ + np->rx_ring[entry].buf_addr = virt_to_le32desc(skb->tail); + } + np->rx_ring[entry].cmd_status = cpu_to_le32(DescIntr | np->rx_buf_sz); + } + return 0; +} + +/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ +static void init_ring(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + np->tx_full = 0; + np->cur_rx = np->cur_tx = 0; + np->dirty_rx = np->dirty_tx = 0; + + /* MAX(PKT_BUF_SZ, dev->mtu + 8); */ + /* I know you _want_ to change this without understanding it. Don't. */ + np->rx_buf_sz = (dev->mtu <= 1532 ? PKT_BUF_SZ : dev->mtu + 8); + np->rx_head_desc = &np->rx_ring[0]; + + /* Initialize all Rx descriptors. */ + for (i = 0; i < RX_RING_SIZE; i++) { + np->rx_ring[i].next_desc = virt_to_le32desc(&np->rx_ring[i+1]); + np->rx_ring[i].cmd_status = cpu_to_le32(DescOwn); + np->rx_skbuff[i] = 0; + } + /* Mark the last entry as wrapping the ring. */ + np->rx_ring[i-1].next_desc = virt_to_le32desc(&np->rx_ring[0]); + + for (i = 0; i < TX_RING_SIZE; i++) { + np->tx_skbuff[i] = 0; + np->tx_ring[i].next_desc = virt_to_le32desc(&np->tx_ring[i+1]); + np->tx_ring[i].cmd_status = 0; + } + np->tx_ring[i-1].next_desc = virt_to_le32desc(&np->tx_ring[0]); + + /* Fill in the Rx buffers. + Allocation failure just leaves a "negative" np->dirty_rx. */ + np->dirty_rx = (unsigned int)(0 - RX_RING_SIZE); + rx_ring_fill(dev); + + return; +} + +static int start_tx(struct sk_buff *skb, struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + unsigned int entry; + + /* Block a timer-based transmit from overlapping. This happens when + packets are presumed lost, and we use this check the Tx status. */ + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + tx_timeout(dev); + return 1; + } + + /* Note: Ordering is important here, set the field with the + "ownership" bit last, and only then increment cur_tx. + No spinlock is needed for either Tx or Rx. + */ + + /* Calculate the next Tx descriptor entry. */ + entry = np->cur_tx % TX_RING_SIZE; + + np->tx_skbuff[entry] = skb; + + np->tx_ring[entry].buf_addr = virt_to_le32desc(skb->data); + np->tx_ring[entry].cmd_status = cpu_to_le32(DescOwn|DescIntr | skb->len); + np->cur_tx++; + + /* For some architectures explicitly flushing np->tx_ring,sizeof(tx_ring) + and skb->data,skb->len improves performance. */ + + if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1) { + np->tx_full = 1; + /* Check for a just-cleared queue. */ + if (np->cur_tx - (volatile unsigned int)np->dirty_tx + < TX_QUEUE_LEN - 4) { + np->tx_full = 0; + netif_unpause_tx_queue(dev); + } else + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); /* Typical path */ + /* Wake the potentially-idle transmit channel. */ + writel(TxOn, dev->base_addr + ChipCmd); + + dev->trans_start = jiffies; + + if (np->msg_level & NETIF_MSG_TX_QUEUED) { + printk(KERN_DEBUG "%s: Transmit frame #%d queued in slot %d.\n", + dev->name, np->cur_tx, entry); + } + return 0; +} + +/* The interrupt handler does all of the Rx thread work and cleans up + after the Tx thread. */ +static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) +{ + struct net_device *dev = (struct net_device *)dev_instance; + struct netdev_private *np; + long ioaddr; + int boguscnt; + +#ifndef final_version /* Can never occur. */ + if (dev == NULL) { + printk (KERN_ERR "Netdev interrupt handler(): IRQ %d for unknown " + "device.\n", irq); + return; + } +#endif + + ioaddr = dev->base_addr; + np = (struct netdev_private *)dev->priv; + boguscnt = np->max_interrupt_work; + + do { + u32 intr_status = readl(ioaddr + IntrStatus); + + if (intr_status == 0 || intr_status == 0xffffffff) + break; + + /* Acknowledge all of the current interrupt sources ASAP. + Nominally the read above accomplishes this, but... */ + writel(intr_status & 0x001ffff, ioaddr + IntrStatus); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Interrupt, status %8.8x.\n", + dev->name, intr_status); + + if (intr_status & (IntrRxDone | IntrRxIntr)) { + netdev_rx(dev); + np->rx_q_empty = rx_ring_fill(dev); + } + + if (intr_status & (IntrRxIdle | IntrDrv)) { + unsigned int old_dirty_rx = np->dirty_rx; + if (rx_ring_fill(dev) == 0) + np->rx_q_empty = 0; + /* Restart Rx engine iff we did add a buffer. */ + if (np->dirty_rx != old_dirty_rx) + writel(RxOn, dev->base_addr + ChipCmd); + } + + for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { + int entry = np->dirty_tx % TX_RING_SIZE; + int tx_status = le32_to_cpu(np->tx_ring[entry].cmd_status); + if (tx_status & DescOwn) + break; + if (np->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG "%s: Transmit done, Tx status %8.8x.\n", + dev->name, tx_status); + if (tx_status & 0x08000000) { + np->stats.tx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + np->stats.tx_bytes += np->tx_skbuff[entry]->len; +#endif + } else { /* Various Tx errors */ + if (np->msg_level & NETIF_MSG_TX_ERR) + printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n", + dev->name, tx_status); + if (tx_status & 0x04010000) np->stats.tx_aborted_errors++; + if (tx_status & 0x02000000) np->stats.tx_fifo_errors++; + if (tx_status & 0x01000000) np->stats.tx_carrier_errors++; + if (tx_status & 0x00200000) np->stats.tx_window_errors++; + np->stats.tx_errors++; + } + /* Free the original skb. */ + dev_free_skb_irq(np->tx_skbuff[entry]); + np->tx_skbuff[entry] = 0; + } + /* Note the 4 slot hysteresis to mark the queue non-full. */ + if (np->tx_full + && np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) { + /* The ring is no longer full, allow new TX entries. */ + np->tx_full = 0; + netif_resume_tx_queue(dev); + } + + /* Abnormal error summary/uncommon events handlers. */ + if (intr_status & IntrAbnormalSummary) + netdev_error(dev, intr_status); + + if (--boguscnt < 0) { + printk(KERN_WARNING "%s: Too much work at interrupt, " + "status=0x%4.4x.\n", + dev->name, intr_status); + np->restore_intr_enable = 1; + break; + } + } while (1); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", + dev->name, (int)readl(ioaddr + IntrStatus)); + + return; +} + +/* This routine is logically part of the interrupt handler, but separated + for clarity and better register allocation. */ +static int netdev_rx(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int entry = np->cur_rx % RX_RING_SIZE; + int boguscnt = np->dirty_rx + RX_RING_SIZE - np->cur_rx; + s32 desc_status = le32_to_cpu(np->rx_head_desc->cmd_status); + + /* If the driver owns the next entry it's a new packet. Send it up. */ + while (desc_status < 0) { /* e.g. & DescOwn */ + if (np->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " In netdev_rx() entry %d status was %8.8x.\n", + entry, desc_status); + if (--boguscnt < 0) + break; + if ((desc_status & (DescMore|DescPktOK|RxTooLong)) != DescPktOK) { + if (desc_status & DescMore) { + printk(KERN_WARNING "%s: Oversized(?) Ethernet frame spanned " + "multiple buffers, entry %#x status %x.\n", + dev->name, np->cur_rx, desc_status); + np->stats.rx_length_errors++; + } else { + /* There was a error. */ + if (np->msg_level & NETIF_MSG_RX_ERR) + printk(KERN_DEBUG " netdev_rx() Rx error was %8.8x.\n", + desc_status); + np->stats.rx_errors++; + if (desc_status & 0x06000000) np->stats.rx_over_errors++; + if (desc_status & 0x00600000) np->stats.rx_length_errors++; + if (desc_status & 0x00140000) np->stats.rx_frame_errors++; + if (desc_status & 0x00080000) np->stats.rx_crc_errors++; + } + } else { + struct sk_buff *skb; + int pkt_len = (desc_status & 0x0fff) - 4; /* Omit CRC size. */ + /* Check if the packet is long enough to accept without copying + to a minimally-sized skbuff. */ + if (pkt_len < np->rx_copybreak + && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { + skb->dev = dev; + skb_reserve(skb, 2); /* 16 byte align the IP header */ +#if defined(HAS_IP_COPYSUM) || (LINUX_VERSION_CODE >= 0x20100) + eth_copy_and_sum(skb, np->rx_skbuff[entry]->tail, pkt_len, 0); + skb_put(skb, pkt_len); +#else + memcpy(skb_put(skb, pkt_len), np->rx_skbuff[entry]->tail, + pkt_len); +#endif + } else { + skb_put(skb = np->rx_skbuff[entry], pkt_len); + np->rx_skbuff[entry] = NULL; + } + skb->protocol = eth_type_trans(skb, dev); + /* W/ hardware checksum: skb->ip_summed = CHECKSUM_UNNECESSARY; */ + netif_rx(skb); + dev->last_rx = jiffies; + np->stats.rx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + np->stats.rx_bytes += pkt_len; +#endif + } + entry = (++np->cur_rx) % RX_RING_SIZE; + np->rx_head_desc = &np->rx_ring[entry]; + desc_status = le32_to_cpu(np->rx_head_desc->cmd_status); + } + + /* Refill is now done in the main interrupt loop. */ + return 0; +} + +static void netdev_error(struct net_device *dev, int intr_status) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (intr_status & LinkChange) { + int chip_config = readl(ioaddr + ChipConfig); + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_NOTICE "%s: Link changed: Autonegotiation advertising" + " %4.4x partner %4.4x.\n", dev->name, + (int)readw(ioaddr + NS_MII_Advert), + (int)readw(ioaddr + NS_MIILinkPartner)); + if (chip_config & CfgLinkGood) + netif_link_up(dev); + else + netif_link_down(dev); + check_duplex(dev); + } + if (intr_status & StatsMax) { + get_stats(dev); + } + if (intr_status & IntrTxUnderrun) { + /* Increase the Tx threshold, 32 byte units. */ + if ((np->tx_config & 0x3f) < 62) + np->tx_config += 2; /* +64 bytes */ + writel(np->tx_config, ioaddr + TxConfig); + } + if (intr_status & WOLPkt) { + int wol_status = readl(ioaddr + WOLCmd); + printk(KERN_NOTICE "%s: Link wake-up event %8.8x", + dev->name, wol_status); + } + if (intr_status & (RxStatusOverrun | IntrRxOverrun)) { + if (np->msg_level & NETIF_MSG_DRV) + printk(KERN_ERR "%s: Rx overflow! ns815 %8.8x.\n", + dev->name, intr_status); + np->stats.rx_fifo_errors++; + } + if (intr_status & ~(LinkChange|StatsMax|RxResetDone|TxResetDone| + RxStatusOverrun|0xA7ff)) { + if (np->msg_level & NETIF_MSG_DRV) + printk(KERN_ERR "%s: Something Wicked happened! natsemi %8.8x.\n", + dev->name, intr_status); + } + /* Hmmmmm, it's not clear how to recover from PCI faults. */ + if (intr_status & IntrPCIErr) { + np->stats.tx_fifo_errors++; + np->stats.rx_fifo_errors++; + } +} + +static struct net_device_stats *get_stats(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + int crc_errs = readl(ioaddr + RxCRCErrs); + + if (crc_errs != 0xffffffff) { + /* We need not lock this segment of code for SMP. + There is no atomic-add vulnerability for most CPUs, + and statistics are non-critical. */ + /* The chip only need report frame silently dropped. */ + np->stats.rx_crc_errors += crc_errs; + np->stats.rx_missed_errors += readl(ioaddr + RxMissed); + } + + return &np->stats; +} + +/* The big-endian AUTODIN II ethernet CRC calculations. + See ns820.c for how to fill the table on new chips. + */ +static unsigned const ethernet_polynomial = 0x04c11db7U; +static inline u32 ether_crc(int length, unsigned char *data) +{ + int crc = -1; + + while(--length >= 0) { + unsigned char current_octet = *data++; + int bit; + for (bit = 0; bit < 8; bit++, current_octet >>= 1) + crc = (crc << 1) ^ + ((crc < 0) ^ (current_octet & 1) ? ethernet_polynomial : 0); + } + return crc; +} + +static void set_rx_mode(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + u8 mc_filter[64]; /* Multicast hash filter */ + u32 rx_mode; + + if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ + /* Unconditionally log net taps. */ + printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); + rx_mode = AcceptBroadcast | AcceptAllMulticast | AcceptAllPhys + | AcceptMyPhys; + } else if ((dev->mc_count > np->multicast_filter_limit) + || (dev->flags & IFF_ALLMULTI)) { + rx_mode = AcceptBroadcast | AcceptAllMulticast | AcceptMyPhys; + } else { + struct dev_mc_list *mclist; + int i; + memset(mc_filter, 0, sizeof(mc_filter)); + for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; + i++, mclist = mclist->next) { + int filterbit = ether_crc(ETH_ALEN, mclist->dmi_addr); + set_bit(filterbit & 0x1ff, mc_filter); + if (np->msg_level & NETIF_MSG_RXFILTER) + printk(KERN_INFO "%s: Added filter for %2.2x:%2.2x:%2.2x:" + "%2.2x:%2.2x:%2.2x crc %8.8x bit %d.\n", dev->name, + mclist->dmi_addr[0], mclist->dmi_addr[1], + mclist->dmi_addr[2], mclist->dmi_addr[3], + mclist->dmi_addr[4], mclist->dmi_addr[5], + filterbit, filterbit & 0x1ff); + } + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; + for (i = 0; i < 64; i += 2) { + u16 filterword = (mc_filter[i+1]<<8) + mc_filter[i]; + if (filterword != np->rx_filter[i>>2]) { + writel(0x200 + i, ioaddr + RxFilterAddr); + writel(filterword, ioaddr + RxFilterData); + np->rx_filter[i>>2] = filterword; + } + } + } + writel(rx_mode, ioaddr + RxFilterAddr); + np->cur_rx_mode = rx_mode; +} + +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + u16 *data = (u16 *)&rq->ifr_data; + u32 *data32 = (void *)&rq->ifr_data; + + switch(cmd) { + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ + data[0] = 1; + /* Fall Through */ + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + data[3] = mdio_read(dev, data[0] & 0x1f, data[1] & 0x1f); + return 0; + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (data[0] == 1) { + u16 miireg = data[1] & 0x1f; + u16 value = data[2]; + mdio_write(dev, 1, miireg, value); + switch (miireg) { + case 0: + /* Check for autonegotiation on or reset. */ + np->duplex_lock = (value & 0x9000) ? 0 : 1; + if (np->duplex_lock) + np->full_duplex = (value & 0x0100) ? 1 : 0; + break; + case 4: np->advertising = value; break; + } + } + return 0; + case SIOCGPARAMS: + data32[0] = np->msg_level; + data32[1] = np->multicast_filter_limit; + data32[2] = np->max_interrupt_work; + data32[3] = np->rx_copybreak; + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + np->msg_level = data32[0]; + np->multicast_filter_limit = data32[1]; + np->max_interrupt_work = data32[2]; + np->rx_copybreak = data32[3]; + return 0; + default: + return -EOPNOTSUPP; + } +} + +static int netdev_close(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + netif_stop_tx_queue(dev); + + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x " + "Int %2.2x.\n", + dev->name, (int)readl(ioaddr + ChipCmd), + (int)readl(ioaddr + IntrStatus)); + printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", + dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx); + } + + /* We don't want the timer to re-start anything. */ + del_timer(&np->timer); + + /* Disable interrupts using the mask. */ + writel(0, ioaddr + IntrMask); + writel(0, ioaddr + IntrEnable); + writel(2, ioaddr + StatsCtrl); /* Freeze Stats */ + + /* Stop the chip's Tx and Rx processes. */ + writel(RxOff | TxOff, ioaddr + ChipCmd); + + get_stats(dev); + +#ifdef __i386__ + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk("\n"KERN_DEBUG" Tx ring at %8.8x:\n", + (int)virt_to_bus(np->tx_ring)); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" #%d desc. %8.8x %8.8x.\n", + i, np->tx_ring[i].cmd_status, (u32)np->tx_ring[i].buf_addr); + printk("\n"KERN_DEBUG " Rx ring %8.8x:\n", + (int)virt_to_bus(np->rx_ring)); + for (i = 0; i < RX_RING_SIZE; i++) { + printk(KERN_DEBUG " #%d desc. %8.8x %8.8x\n", + i, np->rx_ring[i].cmd_status, (u32)np->rx_ring[i].buf_addr); + } + } +#endif /* __i386__ debugging only */ + + free_irq(dev->irq, dev); + + /* Free all the skbuffs in the Rx queue. */ + for (i = 0; i < RX_RING_SIZE; i++) { + np->rx_ring[i].cmd_status = 0; + np->rx_ring[i].buf_addr = 0xBADF00D0; /* An invalid address. */ + if (np->rx_skbuff[i]) { +#if LINUX_VERSION_CODE < 0x20100 + np->rx_skbuff[i]->free = 1; +#endif + dev_free_skb(np->rx_skbuff[i]); + } + np->rx_skbuff[i] = 0; + } + for (i = 0; i < TX_RING_SIZE; i++) { + if (np->tx_skbuff[i]) + dev_free_skb(np->tx_skbuff[i]); + np->tx_skbuff[i] = 0; + } + +#if 0 + writel(0x0200, ioaddr + ChipConfig); /* Power down Xcvr. */ +#endif + + MOD_DEC_USE_COUNT; + + return 0; +} + +static int power_event(void *dev_instance, int event) +{ + struct net_device *dev = dev_instance; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_ATTACH: + MOD_INC_USE_COUNT; + break; + case DRV_SUSPEND: + /* Disable interrupts, freeze stats, stop Tx and Rx. */ + writel(0, ioaddr + IntrEnable); + writel(2, ioaddr + StatsCtrl); + writel(RxOff | TxOff, ioaddr + ChipCmd); + break; + case DRV_RESUME: + /* This is incomplete: the open() actions should be repeated. */ + set_rx_mode(dev); + writel(np->intr_enable, ioaddr + IntrEnable); + writel(1, ioaddr + IntrEnable); + writel(RxOn | TxOn, ioaddr + ChipCmd); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + /* Some, but not all, kernel versions close automatically. */ + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + unregister_netdev(dev); + release_region(dev->base_addr, pci_id_tbl[np->chip_id].io_size); + for (devp = &root_net_dev; *devp; devp = next) { + next = &((struct netdev_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (np->priv_addr) + kfree(np->priv_addr); + kfree(dev); + MOD_DEC_USE_COUNT; + break; + } + } + + return 0; +} + + +#ifdef MODULE +int init_module(void) +{ + if (debug >= NETIF_MSG_DRV) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); +#ifdef CARDBUS + register_driver(ðerdev_ops); + return 0; +#else + return pci_drv_register(&natsemi_drv_id, NULL); +#endif +} + +void cleanup_module(void) +{ + struct net_device *next_dev; + +#ifdef CARDBUS + unregister_driver(ðerdev_ops); +#else + pci_drv_unregister(&natsemi_drv_id); +#endif + + /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ + while (root_net_dev) { + struct netdev_private *np = (void *)(root_net_dev->priv); + unregister_netdev(root_net_dev); + iounmap((char *)root_net_dev->base_addr); + next_dev = np->next_module; + if (np->priv_addr) + kfree(np->priv_addr); + kfree(root_net_dev); + root_net_dev = next_dev; + } +} + +#endif /* MODULE */ + +/* + * Local variables: + * compile-command: "make KERNVER=`uname -r` natsemi.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c natsemi.c" + * simple-compile-command: "gcc -DMODULE -O6 -c natsemi.c" + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ diff --git a/linux/src/drivers/net/ne2k-pci.c b/linux/src/drivers/net/ne2k-pci.c index 280fb72..2b2b1f4 100644 --- a/linux/src/drivers/net/ne2k-pci.c +++ b/linux/src/drivers/net/ne2k-pci.c @@ -2,39 +2,81 @@ /* A Linux device driver for PCI NE2000 clones. - Authorship and other copyrights: - 1992-1998 by Donald Becker, NE2000 core and various modifications. + Authors and other copyright holders: + 1992-2002 by Donald Becker, NE2000 core and various modifications. 1995-1998 by Paul Gortmaker, core modifications and PCI support. - Copyright 1993 assigned to the United States Government as represented by the Director, National Security Agency. - This software may be used and distributed according to the terms - of the GNU Public License, incorporated herein by reference. - - The author may be reached as becker@CESDIS.gsfc.nasa.gov, or C/O - Center of Excellence in Space Data and Information Sciences - Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771 + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. - People are making PCI ne2000 clones! Oh the horror, the horror... + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 410 Severn Ave., Suite 210 + Annapolis MD 21403 Issues remaining: - No full-duplex support. + People are making PCI ne2000 clones! Oh the horror, the horror... + Limited full-duplex support. */ -/* Our copyright info must remain in the binary. */ -static const char *version = -"ne2k-pci.c:v0.99L 2/7/98 D. Becker/P. Gortmaker http://cesdis.gsfc.nasa.gov/linux/drivers/ne2k-pci.html\n"; +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"ne2k-pci.c:v1.05 6/13/2002 D. Becker/P. Gortmaker\n"; +static const char version2[] = +" http://www.scyld.com/network/ne2k-pci.html\n"; -#ifdef MODVERSIONS -#include <linux/modversions.h> +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ + +static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ + +#define MAX_UNITS 8 /* More are supported, limit only on options */ +/* Used to pass the full-duplex flag, etc. */ +static int full_duplex[MAX_UNITS] = {0, }; +static int options[MAX_UNITS] = {0, }; + +/* Force a non std. amount of memory. Units are 256 byte pages. */ +/* #define PACKETBUF_MEMSIZE 0x40 */ + +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif + +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS #endif + +#include <linux/version.h> #include <linux/module.h> +#if LINUX_VERSION_CODE < 0x20300 && defined(MODVERSIONS) +#include <linux/modversions.h> +#endif + #include <linux/kernel.h> -#include <linux/sched.h> #include <linux/errno.h> #include <linux/pci.h> -#include <linux/bios32.h> +#if LINUX_VERSION_CODE < 0x20200 +#define lock_8390_module() +#define unlock_8390_module() +#else +#include <linux/init.h> +#endif + #include <asm/system.h> #include <asm/io.h> #include <asm/irq.h> @@ -43,8 +85,18 @@ static const char *version = #include <linux/etherdevice.h> #include "8390.h" -/* Set statically or when loading the driver module. */ -static int debug = 1; +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif + +MODULE_AUTHOR("Donald Becker / Paul Gortmaker"); +MODULE_DESCRIPTION("PCI NE2000 clone driver"); +MODULE_PARM(debug, "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); /* Some defines that people can play with if so inclined. */ @@ -52,27 +104,52 @@ static int debug = 1; #ifdef LOAD_8390_BY_KERNELD #include <linux/kerneld.h> #endif -/* Use 32 bit data-movement operations instead of 16 bit. */ -#define USE_LONGIO -/* Do we implement the read before write bugfix ? */ -/* #define NE_RW_BUGFIX */ +static void *ne2k_pci_probe1(struct pci_dev *pdev, void *dev, + long ioaddr, int irq, int chip_idx, int fnd_cnt); +/* Flags. We rename an existing ei_status field to store flags! */ +/* Thus only the low 8 bits are usable for non-init-time flags. */ +#define ne2k_flags reg0 +enum { + ONLY_16BIT_IO=8, ONLY_32BIT_IO=4, /* Chip can do only 16/32-bit xfers. */ + FORCE_FDX=0x20, /* User override. */ + REALTEK_FDX=0x40, HOLTEK_FDX=0x80, + STOP_PG_0x60=0x100, +}; +#define NE_IO_EXTENT 0x20 +#ifndef USE_MEMORY_OPS +#define PCI_IOTYPE (PCI_USES_IO | PCI_ADDR0) +#else +#warning When using PCI memory mode the 8390 core must be compiled for memory +#warning operations as well. +#warning Not all PCI NE2000 clones support memory mode access. +#define PCI_IOTYPE (PCI_USES_MEM | PCI_ADDR1) +#endif -/* Do we have a non std. amount of memory? (in units of 256 byte pages) */ -/* #define PACKETBUF_MEMSIZE 0x40 */ +static struct pci_id_info pci_id_tbl[] = { + {"RealTek RTL-8029",{ 0x802910ec, 0xffffffff}, PCI_IOTYPE, NE_IO_EXTENT, + REALTEK_FDX }, + {"Winbond 89C940", { 0x09401050, 0xffffffff}, PCI_IOTYPE, NE_IO_EXTENT, 0}, + {"Winbond w89c940", { 0x5a5a1050, 0xffffffff}, PCI_IOTYPE, NE_IO_EXTENT, 0}, + {"KTI ET32P2", { 0x30008e2e, 0xffffffff}, PCI_IOTYPE, NE_IO_EXTENT, 0}, + {"NetVin NV5000SC", { 0x50004a14, 0xffffffff}, PCI_IOTYPE, NE_IO_EXTENT, 0}, + {"Via 86C926", { 0x09261106, 0xffffffff}, + PCI_IOTYPE, NE_IO_EXTENT, ONLY_16BIT_IO}, + {"SureCom NE34", { 0x0e3410bd, 0xffffffff}, PCI_IOTYPE, NE_IO_EXTENT, 0}, + {"Holtek HT80232", { 0x005812c3, 0xffffffff}, + PCI_IOTYPE, NE_IO_EXTENT, ONLY_16BIT_IO | HOLTEK_FDX}, + {"Holtek HT80229", { 0x559812c3, 0xffffffff}, + PCI_IOTYPE, NE_IO_EXTENT, ONLY_32BIT_IO | HOLTEK_FDX | STOP_PG_0x60}, + {"Compex RL2000", + { 0x140111f6, 0xffffffff}, PCI_IOTYPE, NE_IO_EXTENT, 0}, + /* A mutant board: Winbond chip with a RTL format EEPROM. */ + {"Winbond w89c940 (misprogrammed type 0x1980)", { 0x19808c4a, 0xffffffff}, + PCI_IOTYPE, NE_IO_EXTENT, 0}, + {0,}, /* 0 terminated list. */ +}; -static struct { - unsigned short vendor, dev_id; - char *name; -} -pci_clone_list[] = { - {0x10ec, 0x8029, "RealTek RTL-8029"}, - {0x1050, 0x0940, "Winbond 89C940"}, - {0x11f6, 0x1401, "Compex RL2000"}, - {0x8e2e, 0x3000, "KTI ET32P2"}, - {0x4a14, 0x5000, "NetVin NV5000SC"}, - {0x1106, 0x0926, "Via 82C926"}, - {0,} +struct drv_id_info ne2k_pci_drv_id = { + "ne2k-pci", 0, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, ne2k_pci_probe1, }; /* ---- No user-serviceable parts below ---- */ @@ -81,41 +158,40 @@ pci_clone_list[] = { #define NE_CMD 0x00 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */ #define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */ -#define NE_IO_EXTENT 0x20 #define NESM_START_PG 0x40 /* First page of TX buffer */ #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ -int ne2k_pci_probe(struct device *dev); -static struct device *ne2k_pci_probe1(struct device *dev, int ioaddr, int irq); +int ne2k_pci_probe(struct net_device *dev); -static int ne_open(struct device *dev); -static int ne_close(struct device *dev); +static int ne2k_pci_open(struct net_device *dev); +static int ne2k_pci_close(struct net_device *dev); -static void ne_reset_8390(struct device *dev); -static void ne_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr, +static void ne2k_pci_reset_8390(struct net_device *dev); +static void ne2k_pci_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page); -static void ne_block_input(struct device *dev, int count, +static void ne2k_pci_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset); -static void ne_block_output(struct device *dev, const int count, +static void ne2k_pci_block_output(struct net_device *dev, const int count, const unsigned char *buf, const int start_page); -/* No room in the standard 8390 structure for extra info we need. */ +/* There is no room in the standard 8390 structure for extra info we need, + so we build a meta/outer-wrapper structure.. */ struct ne2k_pci_card { struct ne2k_pci_card *next; - struct device *dev; - unsigned char pci_bus, pci_device_fn; + struct net_device *dev; + struct pci_dev *pci_dev; }; /* A list of all installed devices, for removing the driver module. */ static struct ne2k_pci_card *ne2k_card_list = NULL; #ifdef LOAD_8390_BY_KERNELD -static int (*Lethdev_init)(struct device *dev); -static void (*LNS8390_init)(struct device *dev, int startp); -static int (*Lei_open)(struct device *dev); -static int (*Lei_close)(struct device *dev); +static int (*Lethdev_init)(struct net_device *dev); +static void (*LNS8390_init)(struct net_device *dev, int startp); +static int (*Lei_open)(struct net_device *dev); +static int (*Lei_close)(struct net_device *dev); static void (*Lei_interrupt)(int irq, void *dev_id, struct pt_regs *regs); #else #define Lethdev_init ethdev_init @@ -126,23 +202,28 @@ static void (*Lei_interrupt)(int irq, void *dev_id, struct pt_regs *regs); #endif #ifdef MODULE - -int -init_module(void) +int init_module(void) { - /* We must emit version information. */ - if (debug) - printk(KERN_INFO "%s", version); + int found_cnt; - return ne2k_pci_probe(0); + if (debug) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + found_cnt = pci_drv_register(&ne2k_pci_drv_id, NULL); + if (found_cnt < 0) { + printk(KERN_NOTICE "ne2k-pci.c: No useable cards found, driver NOT installed.\n"); + return -ENODEV; + } + lock_8390_module(); + return 0; } -void -cleanup_module(void) +void cleanup_module(void) { - struct device *dev; + struct net_device *dev; struct ne2k_pci_card *this_card; + pci_drv_unregister(&ne2k_pci_drv_id); + /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ while (ne2k_card_list) { dev = ne2k_card_list->dev; @@ -156,131 +237,32 @@ cleanup_module(void) #ifdef LOAD_8390_BY_KERNELD release_module("8390", 0); +#else + unlock_8390_module(); #endif } -#endif /* MODULE */ - -/* - NEx000-clone boards have a Station Address (SA) PROM (SAPROM) in the packet - buffer memory space. By-the-spec NE2000 clones have 0x57,0x57 in bytes - 0x0e,0x0f of the SAPROM, while other supposed NE2000 clones must be - detected by their SA prefix. - - Reading the SAPROM from a word-wide card with the 8390 set in byte-wide - mode results in doubled values, which can be detected and compensated for. - - The probe is also responsible for initializing the card and filling - in the 'dev' and 'ei_status' structures. -*/ - -#ifdef HAVE_DEVLIST -struct netdev_entry netcard_drv = -{"ne2k_pci", ne2k_pci_probe1, NE_IO_EXTENT, 0}; -#endif +#else -int ne2k_pci_probe(struct device *dev) +int ne2k_pci_probe(struct net_device *dev) { - static int pci_index = 0; /* Static, for multiple calls. */ - int cards_found = 0; - int i; - - if ( ! pcibios_present()) - return -ENODEV; - - for (;pci_index < 0xff; pci_index++) { - unsigned char pci_bus, pci_device_fn; - u8 pci_irq_line; - u16 pci_command, new_command, vendor, device; - u32 pci_ioaddr; - - if (pcibios_find_class (PCI_CLASS_NETWORK_ETHERNET << 8, pci_index, - &pci_bus, &pci_device_fn) - != PCIBIOS_SUCCESSFUL) - break; - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_VENDOR_ID, &vendor); - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_DEVICE_ID, &device); - - /* Note: some vendor IDs (RealTek) have non-NE2k cards as well. */ - for (i = 0; pci_clone_list[i].vendor != 0; i++) - if (pci_clone_list[i].vendor == vendor - && pci_clone_list[i].dev_id == device) - break; - if (pci_clone_list[i].vendor == 0) - continue; - -#ifndef MODULE - { - static unsigned version_printed = 0; - if (version_printed++ == 0) - printk(KERN_INFO "%s", version); - } -#endif - - pcibios_read_config_dword(pci_bus, pci_device_fn, - PCI_BASE_ADDRESS_0, &pci_ioaddr); - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_INTERRUPT_LINE, &pci_irq_line); - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, &pci_command); - - /* Remove I/O space marker in bit 0. */ - pci_ioaddr &= PCI_BASE_ADDRESS_IO_MASK; - - /* Avoid already found cards from previous calls */ - if (check_region(pci_ioaddr, NE_IO_EXTENT)) - continue; - - /* Activate the card: fix for brain-damaged Win98 BIOSes. */ - new_command = pci_command | PCI_COMMAND_IO; - if (pci_command != new_command) { - printk(KERN_INFO " The PCI BIOS has not enabled this" - " NE2k clone! Updating PCI command %4.4x->%4.4x.\n", - pci_command, new_command); - pcibios_write_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, new_command); - } - - if (pci_irq_line <= 0 || pci_irq_line >= NR_IRQS) - printk(KERN_WARNING " WARNING: The PCI BIOS assigned this PCI NE2k" - " card to IRQ %d, which is unlikely to work!.\n" - KERN_WARNING " You should use the PCI BIOS setup to assign" - " a valid IRQ line.\n", pci_irq_line); - - printk("ne2k-pci.c: PCI NE2000 clone '%s' at I/O %#x, IRQ %d.\n", - pci_clone_list[i].name, pci_ioaddr, pci_irq_line); - dev = ne2k_pci_probe1(dev, pci_ioaddr, pci_irq_line); - if (dev == 0) { - /* Should not happen. */ - printk(KERN_ERR "ne2k-pci: Probe of PCI card at %#x failed.\n", - pci_ioaddr); - continue; - } else { - struct ne2k_pci_card *ne2k_card = - kmalloc(sizeof(struct ne2k_pci_card), GFP_KERNEL); - ne2k_card->next = ne2k_card_list; - ne2k_card_list = ne2k_card; - ne2k_card->dev = dev; - ne2k_card->pci_bus = pci_bus; - ne2k_card->pci_device_fn = pci_device_fn; - } - dev = 0; - - cards_found++; - } - - return cards_found ? 0 : -ENODEV; + int found_cnt = pci_drv_register(&ne2k_pci_drv_id, NULL); + if (found_cnt >= 0 && debug) + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return found_cnt; } +#endif /* MODULE */ -static struct device *ne2k_pci_probe1(struct device *dev, int ioaddr, int irq) +static void *ne2k_pci_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int fnd_cnt) { + struct net_device *dev; int i; unsigned char SA_prom[32]; - const char *name = NULL; int start_page, stop_page; int reg0 = inb(ioaddr); + int flags = pci_id_tbl[chip_idx].drv_flags; + struct ne2k_pci_card *ne2k_card; if (reg0 == 0xFF) return 0; @@ -300,7 +282,18 @@ static struct device *ne2k_pci_probe1(struct device *dev, int ioaddr, int irq) } } - dev = init_etherdev(dev, 0); + dev = init_etherdev(init_dev, 0); + + if (dev == NULL) + return 0; + ne2k_card = kmalloc(sizeof(struct ne2k_pci_card), GFP_KERNEL); + if (ne2k_card == NULL) + return 0; + + ne2k_card->next = ne2k_card_list; + ne2k_card_list = ne2k_card; + ne2k_card->dev = dev; + ne2k_card->pci_dev = pdev; /* Reset card. Who knows what dain-bramaged state it was left in. */ { @@ -363,34 +356,23 @@ static struct device *ne2k_pci_probe1(struct device *dev, int ioaddr, int irq) } -#ifdef notdef - /* Some broken PCI cards don't respect the byte-wide - request in program_seq above, and hence don't have doubled up values. - */ - for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) { - SA_prom[i] = inb(ioaddr + NE_DATAPORT); - SA_prom[i+1] = inb(ioaddr + NE_DATAPORT); - if (SA_prom[i] != SA_prom[i+1]) - sa_prom_doubled = 0; - } - - if (sa_prom_doubled) - for (i = 0; i < 16; i++) - SA_prom[i] = SA_prom[i+i]; -#else - for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++) - SA_prom[i] = inb(ioaddr + NE_DATAPORT); + /* Note: all PCI cards have at least 16 bit access, so we don't have + to check for 8 bit cards. Most cards permit 32 bit access. */ -#endif + if (flags & ONLY_32BIT_IO) { + for (i = 0; i < 8; i++) + ((u32 *)SA_prom)[i] = le32_to_cpu(inl(ioaddr + NE_DATAPORT)); + } else + for(i = 0; i < 32 /*sizeof(SA_prom)*/; i++) + SA_prom[i] = inb(ioaddr + NE_DATAPORT); /* We always set the 8390 registers for word mode. */ outb(0x49, ioaddr + EN0_DCFG); start_page = NESM_START_PG; - stop_page = NESM_STOP_PG; - /* Set up the rest of the parameters. */ - name = "PCI NE2000"; + stop_page = flags & STOP_PG_0x60 ? 0x60 : NESM_STOP_PG; + /* Set up the rest of the parameters. */ dev->irq = irq; dev->base_addr = ioaddr; @@ -402,17 +384,24 @@ static struct device *ne2k_pci_probe1(struct device *dev, int ioaddr, int irq) request_region(ioaddr, NE_IO_EXTENT, dev->name); - printk("%s: %s found at %#x, IRQ %d, ", - dev->name, name, ioaddr, dev->irq); + printk("%s: %s found at %#lx, IRQ %d, ", + dev->name, pci_id_tbl[chip_idx].name, ioaddr, dev->irq); for(i = 0; i < 6; i++) { printk("%2.2X%s", SA_prom[i], i == 5 ? ".\n": ":"); dev->dev_addr[i] = SA_prom[i]; } - ei_status.name = name; + ei_status.name = pci_id_tbl[chip_idx].name; ei_status.tx_start_page = start_page; ei_status.stop_page = stop_page; ei_status.word16 = 1; + ei_status.ne2k_flags = flags; + if (fnd_cnt < MAX_UNITS) { + if (full_duplex[fnd_cnt] > 0 || (options[fnd_cnt] & FORCE_FDX)) { + printk("%s: Full duplex set by user option.\n", dev->name); + ei_status.ne2k_flags |= FORCE_FDX; + } + } ei_status.rx_start_page = start_page + TX_PAGES; #ifdef PACKETBUF_MEMSIZE @@ -420,28 +409,37 @@ static struct device *ne2k_pci_probe1(struct device *dev, int ioaddr, int irq) ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; #endif - ei_status.reset_8390 = &ne_reset_8390; - ei_status.block_input = &ne_block_input; - ei_status.block_output = &ne_block_output; - ei_status.get_8390_hdr = &ne_get_8390_hdr; - dev->open = &ne_open; - dev->stop = &ne_close; + ei_status.reset_8390 = &ne2k_pci_reset_8390; + ei_status.block_input = &ne2k_pci_block_input; + ei_status.block_output = &ne2k_pci_block_output; + ei_status.get_8390_hdr = &ne2k_pci_get_8390_hdr; + dev->open = &ne2k_pci_open; + dev->stop = &ne2k_pci_close; LNS8390_init(dev, 0); return dev; } -static int -ne_open(struct device *dev) +static int ne2k_pci_open(struct net_device *dev) { - if (request_irq(dev->irq, Lei_interrupt, SA_SHIRQ, dev->name, dev)) + MOD_INC_USE_COUNT; + if (request_irq(dev->irq, Lei_interrupt, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; return -EAGAIN; + } + /* Set full duplex for the chips that we know about. */ + if (ei_status.ne2k_flags & FORCE_FDX) { + long ioaddr = dev->base_addr; + if (ei_status.ne2k_flags & REALTEK_FDX) { + outb(0xC0 + E8390_NODMA, ioaddr + NE_CMD); /* Page 3 */ + outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20); + } else if (ei_status.ne2k_flags & HOLTEK_FDX) + outb(inb(ioaddr + 0x20) | 0x80, ioaddr + 0x20); + } Lei_open(dev); - MOD_INC_USE_COUNT; return 0; } -static int -ne_close(struct device *dev) +static int ne2k_pci_close(struct net_device *dev) { Lei_close(dev); free_irq(dev->irq, dev); @@ -451,8 +449,7 @@ ne_close(struct device *dev) /* Hard reset the card. This used to pause for the same period that a 8390 reset command required, but that shouldn't be necessary. */ -static void -ne_reset_8390(struct device *dev) +static void ne2k_pci_reset_8390(struct net_device *dev) { unsigned long reset_start_time = jiffies; @@ -467,7 +464,7 @@ ne_reset_8390(struct device *dev) /* This check _should_not_ be necessary, omit eventually. */ while ((inb(NE_BASE+EN0_ISR) & ENISR_RESET) == 0) if (jiffies - reset_start_time > 2) { - printk("%s: ne_reset_8390() did not complete.\n", dev->name); + printk("%s: ne2k_pci_reset_8390() did not complete.\n", dev->name); break; } outb(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */ @@ -477,18 +474,18 @@ ne_reset_8390(struct device *dev) we don't need to be concerned with ring wrap as the header will be at the start of a page, so we optimize accordingly. */ -static void -ne_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr, int ring_page) +static void ne2k_pci_get_8390_hdr(struct net_device *dev, + struct e8390_pkt_hdr *hdr, int ring_page) { - int nic_base = dev->base_addr; + long nic_base = dev->base_addr; /* This *shouldn't* happen. If it does, it's the last thing you'll see */ if (ei_status.dmaing) { - printk("%s: DMAing conflict in ne_get_8390_hdr " + printk("%s: DMAing conflict in ne2k_pci_get_8390_hdr " "[DMAstat:%d][irqlock:%d][intr:%d].\n", dev->name, ei_status.dmaing, ei_status.irqlock, - dev->interrupt); + (int)dev->interrupt); return; } @@ -500,11 +497,12 @@ ne_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr, int ring_page) outb(ring_page, nic_base + EN0_RSARHI); outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); -#if defined(USE_LONGIO) - *(u32*)hdr = inl(NE_BASE + NE_DATAPORT); -#else - insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); -#endif + if (ei_status.ne2k_flags & ONLY_16BIT_IO) { + insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); + } else { + *(u32*)hdr = le32_to_cpu(inl(NE_BASE + NE_DATAPORT)); + le16_to_cpus(&hdr->count); + } outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ ei_status.dmaing &= ~0x01; @@ -515,21 +513,23 @@ ne_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr, int ring_page) The NEx000 doesn't share the on-board packet memory -- you have to put the packet out through the "remote DMA" dataport using outb. */ -static void -ne_block_input(struct device *dev, int count, struct sk_buff *skb, int ring_offset) +static void ne2k_pci_block_input(struct net_device *dev, int count, + struct sk_buff *skb, int ring_offset) { - int nic_base = dev->base_addr; + long nic_base = dev->base_addr; char *buf = skb->data; /* This *shouldn't* happen. If it does, it's the last thing you'll see */ if (ei_status.dmaing) { - printk("%s: DMAing conflict in ne_block_input " + printk("%s: DMAing conflict in ne2k_pci_block_input " "[DMAstat:%d][irqlock:%d][intr:%d].\n", dev->name, ei_status.dmaing, ei_status.irqlock, - dev->interrupt); + (int)dev->interrupt); return; } ei_status.dmaing |= 0x01; + if (ei_status.ne2k_flags & ONLY_32BIT_IO) + count = (count + 3) & 0xFFFC; outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); outb(count & 0xff, nic_base + EN0_RCNTLO); outb(count >> 8, nic_base + EN0_RCNTHI); @@ -537,30 +537,30 @@ ne_block_input(struct device *dev, int count, struct sk_buff *skb, int ring_offs outb(ring_offset >> 8, nic_base + EN0_RSARHI); outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); -#if defined(USE_LONGIO) - insl(NE_BASE + NE_DATAPORT, buf, count>>2); - if (count & 3) { - buf += count & ~3; - if (count & 2) { - *((u16 *) buf) = inw(NE_BASE + NE_DATAPORT); - buf = (void *) buf + sizeof (u16); + if (ei_status.ne2k_flags & ONLY_16BIT_IO) { + insw(NE_BASE + NE_DATAPORT,buf,count>>1); + if (count & 0x01) { + buf[count-1] = inb(NE_BASE + NE_DATAPORT); + } + } else { + insl(NE_BASE + NE_DATAPORT, buf, count>>2); + if (count & 3) { + buf += count & ~3; + if (count & 2) { + *((u16 *) buf) = le16_to_cpu(inw(NE_BASE + NE_DATAPORT)); + buf = (void *) buf + sizeof (u16); + } + if (count & 1) + *buf = inb(NE_BASE + NE_DATAPORT); } - if (count & 1) - *buf = inb(NE_BASE + NE_DATAPORT); - } -#else - insw(NE_BASE + NE_DATAPORT,buf,count>>1); - if (count & 0x01) { - buf[count-1] = inb(NE_BASE + NE_DATAPORT); } -#endif outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ ei_status.dmaing &= ~0x01; } static void -ne_block_output(struct device *dev, int count, +ne2k_pci_block_output(struct net_device *dev, int count, const unsigned char *buf, const int start_page) { int nic_base = NE_BASE; @@ -568,15 +568,18 @@ ne_block_output(struct device *dev, int count, /* On little-endian it's always safe to round the count up for word writes. */ - if (count & 0x01) - count++; + if (ei_status.ne2k_flags & ONLY_32BIT_IO) + count = (count + 3) & 0xFFFC; + else + if (count & 0x01) + count++; /* This *shouldn't* happen. If it does, it's the last thing you'll see */ if (ei_status.dmaing) { - printk("%s: DMAing conflict in ne_block_output." + printk("%s: DMAing conflict in ne2k_pci_block_output." "[DMAstat:%d][irqlock:%d][intr:%d]\n", dev->name, ei_status.dmaing, ei_status.irqlock, - dev->interrupt); + (int)dev->interrupt); return; } ei_status.dmaing |= 0x01; @@ -602,26 +605,25 @@ ne_block_output(struct device *dev, int count, outb(0x00, nic_base + EN0_RSARLO); outb(start_page, nic_base + EN0_RSARHI); outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); -#if defined(USE_LONGIO) - outsl(NE_BASE + NE_DATAPORT, buf, count>>2); - if (count & 3) { - buf += count & ~3; - if (count & 2) { - outw(*((u16 *) buf), NE_BASE + NE_DATAPORT); - buf = (void *) buf + sizeof (u16); + if (ei_status.ne2k_flags & ONLY_16BIT_IO) { + outsw(NE_BASE + NE_DATAPORT, buf, count>>1); + } else { + outsl(NE_BASE + NE_DATAPORT, buf, count>>2); + if (count & 3) { + buf += count & ~3; + if (count & 2) { + outw(cpu_to_le16(*((u16 *) buf)), NE_BASE + NE_DATAPORT); + buf = (void *) buf + sizeof (u16); + } } - } -#else - outsw(NE_BASE + NE_DATAPORT, buf, count>>1); -#endif dma_start = jiffies; while ((inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) if (jiffies - dma_start > 2) { /* Avoid clock roll-over. */ printk("%s: timeout waiting for Tx RDC.\n", dev->name); - ne_reset_8390(dev); + ne2k_pci_reset_8390(dev); LNS8390_init(dev,1); break; } @@ -634,8 +636,8 @@ ne_block_output(struct device *dev, int count, /* * Local variables: - * compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/ -c ne2k-pci.c" - * alt-compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer -I/usr/src/linux/drivers/net/ -c ne2k-pci.c" + * compile-command: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c ne2k-pci.c -I/usr/src/linux/drivers/net/" + * alt-compile-command: "gcc -DMODULE -O6 -c ne2k-pci.c" * c-indent-level: 4 * c-basic-offset: 4 * tab-width: 4 diff --git a/linux/src/drivers/net/ns820.c b/linux/src/drivers/net/ns820.c new file mode 100644 index 0000000..968f3ac --- /dev/null +++ b/linux/src/drivers/net/ns820.c @@ -0,0 +1,1547 @@ +/* ns820.c: A Linux Gigabit Ethernet driver for the NatSemi DP83820 series. */ +/* + Written/copyright 1999-2003 by Donald Becker. + Copyright 2002-2003 by Scyld Computing Corporation. + + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. License for under other terms may be + available. Contact the original author for details. + + The original author may be reached as becker@scyld.com, or at + Scyld Computing Corporation + 914 Bay Ridge Road, Suite 220 + Annapolis MD 21403 + + Support information and updates available at + http://www.scyld.com/network/natsemi.html + The information and support mailing lists are based at + http://www.scyld.com/mailman/listinfo/ +*/ + +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"ns820.c:v1.03a 8/09/2003 Written by Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/network/natsemi.html\n"; +/* Updated to recommendations in pci-skeleton v2.13. */ + +/* Automatically extracted configuration info: +probe-func: ns820_probe +config-in: tristate 'National Semiconductor DP8382x series PCI Ethernet support' CONFIG_NATSEMI820 + +c-help-name: National Semiconductor DP8382x series PCI Ethernet support +c-help-symbol: CONFIG_NATSEMI820 +c-help: This driver is for the National Semiconductor DP83820 Gigabit Ethernet +c-help: adapter series. +c-help: More specific information and updates are available from +c-help: http://www.scyld.com/network/natsemi.html +*/ + +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ + +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; + +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ +static int max_interrupt_work = 20; + +/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). + This chip uses a 2048 element hash table based on the Ethernet CRC. + Previous natsemi chips had unreliable multicast filter circuitry. + To work around an observed problem set this value to '0', + which will immediately switch to Rx-all-multicast. + */ +static int multicast_filter_limit = 100; + +/* Set the copy breakpoint for the copy-only-tiny-frames scheme. + Setting to > 1518 effectively disables this feature. + This chip can only receive into aligned buffers, so architectures such + as the Alpha AXP might benefit from a copy-align. +*/ +static int rx_copybreak = 0; + +/* Used to pass the media type, etc. + Both 'options[]' and 'full_duplex[]' should exist for driver + interoperability, however setting full_duplex[] is deprecated. + The media type is usually passed in 'options[]'. + The default is autonegotation for speed and duplex. + This should rarely be overridden. + Use option values 0x10/0x20 for 10Mbps, 0x100,0x200 for 100Mbps. + Use option values 0x10 and 0x100 for forcing half duplex fixed speed. + Use option values 0x20 and 0x200 for forcing full duplex operation. + Use 0x1000 or 0x2000 for gigabit. +*/ +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; + +/* Operational parameters that are set at compile time. */ + +/* Keep the ring sizes a power of two for compile efficiency. + Understand the implications before changing these settings! + The compiler will convert <unsigned>'%'<2^N> into a bit mask. + Making the Tx ring too large decreases the effectiveness of channel + bonding and packet priority, confuses the system network buffer limits, + and wastes memory. + Too-large receive rings waste memory and confound network buffer limits. +*/ +#define TX_RING_SIZE 16 +#define TX_QUEUE_LEN 10 /* Limit ring entries actually used, min 4. */ +#define RX_RING_SIZE 64 + +/* Operational parameters that usually are not changed. */ +/* Time in jiffies before concluding the transmitter is hung. + Re-autonegotiation may take up to 3 seconds. + */ +#define TX_TIMEOUT (6*HZ) + +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. This is not a limit, + but a way to keep a consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 + +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif + +/* Include files, designed to support most kernel versions 2.0.0 and later. */ +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + +#include <linux/version.h> +#if defined(MODVERSIONS) +#include <linux/modversions.h> +#endif +#include <linux/module.h> + +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else +#include <linux/malloc.h> +#endif +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <asm/processor.h> /* Processor type for cache alignment. */ +#include <asm/bitops.h> +#include <asm/io.h> + +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif + +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif + +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); +MODULE_DESCRIPTION("National Semiconductor DP83820 series PCI Ethernet driver"); +MODULE_LICENSE("GPL"); +MODULE_PARM(debug, "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(max_interrupt_work, "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(rx_copybreak, "i"); +MODULE_PARM(multicast_filter_limit, "i"); +MODULE_PARM_DESC(debug, "Driver message level (0-31)"); +MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex"); +MODULE_PARM_DESC(max_interrupt_work, + "Driver maximum events handled per interrupt"); +MODULE_PARM_DESC(full_duplex, + "Non-zero to force full duplex, non-negotiated link " + "(deprecated)."); +MODULE_PARM_DESC(rx_copybreak, + "Breakpoint in bytes for copy-only-tiny-frames"); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast addresses before switching to Rx-all-multicast"); + +/* + Theory of Operation + +I. Board Compatibility + +This driver is designed for National Semiconductor DP83820 10/100/1000 +Ethernet NIC. It is superficially similar to the 810 series "natsemi.c" +driver, however the register layout, descriptor layout and element +length of the new chip series is different. + +II. Board-specific settings + +This driver requires the PCI interrupt line to be configured. +It honors the EEPROM-set values. + +III. Driver operation + +IIIa. Ring buffers + +This driver uses two statically allocated fixed-size descriptor lists +formed into rings by a branch from the final descriptor to the beginning of +the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. +The NatSemi design uses a 'next descriptor' pointer that the driver forms +into a list, thus rings can be arbitrarily sized. Before changing the +ring sizes you should understand the flow and cache effects of the +full/available/empty hysteresis. + +IIIb/c. Transmit/Receive Structure + +This driver uses a zero-copy receive and transmit scheme. +The driver allocates full frame size skbuffs for the Rx ring buffers at +open() time and passes the skb->data field to the chip as receive data +buffers. When an incoming frame is less than RX_COPYBREAK bytes long, +a fresh skbuff is allocated and the frame is copied to the new skbuff. +When the incoming frame is larger, the skbuff is passed directly up the +protocol stack. Buffers consumed this way are replaced by newly allocated +skbuffs in a later phase of receives. + +The RX_COPYBREAK value is chosen to trade-off the memory wasted by +using a full-sized skbuff for small frames vs. the copying costs of larger +frames. New boards are typically used in generously configured machines +and the underfilled buffers have negligible impact compared to the benefit of +a single allocation size, so the default value of zero results in never +copying packets. When copying is done, the cost is usually mitigated by using +a combined copy/checksum routine. Copying also preloads the cache, which is +most useful with small frames. + +A subtle aspect of the operation is that unaligned buffers are not permitted +by the hardware. Thus the IP header at offset 14 in an ethernet frame isn't +longword aligned for further processing. On copies frames are put into the +skbuff at an offset of "+2", 16-byte aligning the IP header. + +IIId. Synchronization + +The driver runs as two independent, single-threaded flows of control. One +is the send-packet routine, which enforces single-threaded use by the +dev->tbusy flag. The other thread is the interrupt handler, which is single +threaded by the hardware and interrupt handling software. + +The send packet thread has partial control over the Tx ring and 'dev->tbusy' +flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next +queue slot is empty, it clears the tbusy flag when finished otherwise it sets +the 'lp->tx_full' flag. + +The interrupt handler has exclusive control over the Rx ring and records stats +from the Tx ring. After reaping the stats, it marks the Tx queue entry as +empty by incrementing the dirty_tx mark. Iff the 'lp->tx_full' flag is set, it +clears both the tx_full and tbusy flags. + +IV. Notes + +The NatSemi 820 series PCI gigabit chips are very common on low-cost NICs. +The '821 appears to be the same as '820 chip, only with pins for the upper +32 bits marked "N/C". + +IVb. References + +http://www.scyld.com/expert/100mbps.html +http://www.scyld.com/expert/NWay.html +The NatSemi dp83820 datasheet is available: search www.natsemi.com + +IVc. Errata + +None characterised. + +*/ + + + +static void *ns820_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +static int power_event(void *dev_instance, int event); +enum chip_capability_flags {FDXActiveLow=1, InvertGbXcvrPwr=2, }; +#ifdef USE_IO_OPS +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_IO | PCI_ADDR0) +#else +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_MEM | PCI_ADDR1) +#endif + +static struct pci_id_info pci_id_tbl[] = { + { "D-Link DGE-500T (DP83820)", + { 0x0022100B, 0xffffffff, 0x49001186, 0xffffffff, }, + PCI_IOTYPE, 256, FDXActiveLow}, + {"NatSemi DP83820", { 0x0022100B, 0xffffffff }, + PCI_IOTYPE, 256, 0}, + {0,}, /* 0 terminated list. */ +}; + +struct drv_id_info ns820_drv_id = { + "ns820", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, + ns820_probe1, power_event }; + +/* Offsets to the device registers. + Unlike software-only systems, device drivers interact with complex hardware. + It's not useful to define symbolic names for every register bit in the + device. Please do not change these names without good reason. +*/ +enum register_offsets { + ChipCmd=0x00, ChipConfig=0x04, EECtrl=0x08, PCIBusCfg=0x0C, + IntrStatus=0x10, IntrMask=0x14, IntrEnable=0x18, IntrHoldoff=0x1C, + TxRingPtr=0x20, TxRingPtrHi=0x24, TxConfig=0x28, + RxRingPtr=0x30, RxRingPtrHi=0x34, RxConfig=0x38, + WOLCmd=0x40, PauseCmd=0x44, RxFilterAddr=0x48, RxFilterData=0x4C, + BootRomAddr=0x50, BootRomData=0x54, ChipRevReg=0x58, + StatsCtrl=0x5C, RxPktErrs=0x60, RxMissed=0x68, RxCRCErrs=0x64, +}; + +/* Bits in ChipCmd. */ +enum ChipCmdBits { + ChipReset=0x100, SoftIntr=0x80, RxReset=0x20, TxReset=0x10, + RxOff=0x08, RxOn=0x04, TxOff=0x02, TxOn=0x01, +}; + +/* Bits in ChipConfig. */ +enum ChipConfigBits { + CfgLinkGood=0x80000000, CfgFDX=0x10000000, + CfgXcrReset=0x0400, CfgXcrOff=0x0200, +}; + +/* Bits in the interrupt status/mask registers. */ +enum intr_status_bits { + IntrRxDone=0x0001, IntrRxIntr=0x0002, IntrRxErr=0x0004, IntrRxEarly=0x0008, + IntrRxIdle=0x0010, IntrRxOverrun=0x0020, + IntrTxDone=0x0040, IntrTxIntr=0x0080, IntrTxErr=0x0100, + IntrTxIdle=0x0200, IntrTxUnderrun=0x0400, + StatsMax=0x0800, IntrDrv=0x1000, WOLPkt=0x2000, LinkChange=0x4000, + RxStatusOverrun=0x10000, + RxResetDone=0x00200000, TxResetDone=0x00400000, + IntrPCIErr=0x001E0000, + IntrNormalSummary=0x0251, IntrAbnormalSummary=0xED20, +}; + +/* Bits in the RxMode register. */ +enum rx_mode_bits { + AcceptErr=0x20, AcceptRunt=0x10, + AcceptBroadcast=0xC0000000, + AcceptMulticast=0x00200000, AcceptAllMulticast=0x20000000, + AcceptAllPhys=0x10000000, AcceptMyPhys=0x08000000, +}; + +/* The Rx and Tx buffer descriptors. */ +/* Note that using only 32 bit fields simplifies conversion to big-endian + architectures. */ +struct netdev_desc { +#if ADDRLEN == 64 + u64 next_desc; + u64 buf_addr; +#endif + u32 next_desc; + u32 buf_addr; + s32 cmd_status; + u32 vlan_status; +}; + +/* Bits in network_desc.status */ +enum desc_status_bits { + DescOwn=0x80000000, DescMore=0x40000000, DescIntr=0x20000000, + DescNoCRC=0x10000000, + DescPktOK=0x08000000, RxTooLong=0x00400000, +}; + +#define PRIV_ALIGN 15 /* Required alignment mask */ +struct netdev_private { + /* Descriptor rings first for alignment. */ + struct netdev_desc rx_ring[RX_RING_SIZE]; + struct netdev_desc tx_ring[TX_RING_SIZE]; + struct net_device *next_module; /* Link for devices of this type. */ + void *priv_addr; /* Unaligned address for kfree */ + const char *product_name; + /* The addresses of receive-in-place skbuffs. */ + struct sk_buff* rx_skbuff[RX_RING_SIZE]; + /* The saved address of a sent-in-place packet/buffer, for later free(). */ + struct sk_buff* tx_skbuff[TX_RING_SIZE]; + struct net_device_stats stats; + struct timer_list timer; /* Media monitoring timer. */ + /* Frequently used values: keep some adjacent for cache effect. */ + int msg_level; + int chip_id, drv_flags; + struct pci_dev *pci_dev; + long in_interrupt; /* Word-long for SMP locks. */ + int max_interrupt_work; + int intr_enable; + unsigned int restore_intr_enable:1; /* Set if temporarily masked. */ + unsigned int rx_q_empty:1; /* Set out-of-skbuffs. */ + + struct netdev_desc *rx_head_desc; + unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ + unsigned int rx_buf_sz; /* Based on MTU+slack. */ + int rx_copybreak; + + unsigned int cur_tx, dirty_tx; + unsigned int tx_full:1; /* The Tx queue is full. */ + /* These values keep track of the transceiver/media in use. */ + unsigned int full_duplex:1; /* Full-duplex operation requested. */ + unsigned int duplex_lock:1; + unsigned int medialock:1; /* Do not sense media. */ + unsigned int default_port; /* Last dev->if_port value. */ + /* Rx filter. */ + u32 cur_rx_mode; + u32 rx_filter[16]; + int multicast_filter_limit; + /* FIFO and PCI burst thresholds. */ + int tx_config, rx_config; + /* MII transceiver section. */ + u16 advertising; /* NWay media advertisement */ +}; + +static int eeprom_read(long ioaddr, int location); +static void mdio_sync(long mdio_addr); +static int mdio_read(struct net_device *dev, int phy_id, int location); +static void mdio_write(struct net_device *dev, int phy_id, int location, int value); +static int netdev_open(struct net_device *dev); +static void check_duplex(struct net_device *dev); +static void netdev_timer(unsigned long data); +static void tx_timeout(struct net_device *dev); +static int rx_ring_fill(struct net_device *dev); +static void init_ring(struct net_device *dev); +static int start_tx(struct sk_buff *skb, struct net_device *dev); +static void intr_handler(int irq, void *dev_instance, struct pt_regs *regs); +static void netdev_error(struct net_device *dev, int intr_status); +static int netdev_rx(struct net_device *dev); +static void netdev_error(struct net_device *dev, int intr_status); +static void set_rx_mode(struct net_device *dev); +static struct net_device_stats *get_stats(struct net_device *dev); +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +static int netdev_close(struct net_device *dev); + + + +/* A list of our installed devices, for removing the driver module. */ +static struct net_device *root_net_dev = NULL; + +#ifndef MODULE +int ns820_probe(struct net_device *dev) +{ + if (pci_drv_register(&ns820_drv_id, dev) < 0) + return -ENODEV; + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return 0; +} +#endif + +static void *ns820_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int card_idx) +{ + struct net_device *dev; + struct netdev_private *np; + void *priv_mem; + int i, option = card_idx < MAX_UNITS ? options[card_idx] : 0; + + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; + + /* Perhaps NETIF_MSG_PROBE */ + printk(KERN_INFO "%s: %s at 0x%lx, ", + dev->name, pci_id_tbl[chip_idx].name, ioaddr); + + for (i = 0; i < 3; i++) + ((u16 *)dev->dev_addr)[i] = le16_to_cpu(eeprom_read(ioaddr, 12 - i)); + for (i = 0; i < 5; i++) + printk("%2.2x:", dev->dev_addr[i]); + printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq); + + /* Reset the chip to erase previous misconfiguration. */ + writel(ChipReset, ioaddr + ChipCmd); + /* Power up Xcvr. */ + writel(~CfgXcrOff & readl(ioaddr + ChipConfig), ioaddr + ChipConfig); + + /* Make certain elements e.g. descriptor lists are aligned. */ + priv_mem = kmalloc(sizeof(*np) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; + + dev->base_addr = ioaddr; + dev->irq = irq; + + dev->priv = np = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); + memset(np, 0, sizeof(*np)); + np->priv_addr = priv_mem; + + np->next_module = root_net_dev; + root_net_dev = dev; + + np->pci_dev = pdev; + np->chip_id = chip_idx; + np->drv_flags = pci_id_tbl[chip_idx].drv_flags; + np->msg_level = (1 << debug) - 1; + np->rx_copybreak = rx_copybreak; + np->max_interrupt_work = max_interrupt_work; + np->multicast_filter_limit = multicast_filter_limit; + + if (dev->mem_start) + option = dev->mem_start; + + /* The lower four bits are the media type. */ + if (option > 0) { + if (option & 0x220) + np->full_duplex = 1; + np->default_port = option & 0x33ff; + if (np->default_port & 0x330) + np->medialock = 1; + } + if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) + np->full_duplex = 1; + + if (np->full_duplex) { + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO "%s: Set to forced full duplex, autonegotiation" + " disabled.\n", dev->name); + np->duplex_lock = 1; + } + + /* The chip-specific entries in the device structure. */ + dev->open = &netdev_open; + dev->hard_start_xmit = &start_tx; + dev->stop = &netdev_close; + dev->get_stats = &get_stats; + dev->set_multicast_list = &set_rx_mode; + dev->do_ioctl = &mii_ioctl; + + /* Allow forcing the media type. */ + if (option > 0) { + if (option & 0x220) + np->full_duplex = 1; + np->default_port = option & 0x3ff; + if (np->default_port & 0x330) { + np->medialock = 1; + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO " Forcing %dMbs %s-duplex operation.\n", + (option & 0x300 ? 100 : 10), + (np->full_duplex ? "full" : "half")); + mdio_write(dev, 1, 0, + ((option & 0x300) ? 0x2000 : 0) | /* 100mbps? */ + (np->full_duplex ? 0x0100 : 0)); /* Full duplex? */ + } + } + + return dev; +} + + +/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. + The EEPROM code is for the common 93c06/46 EEPROMs with 6 bit addresses. + Update to the code in other drivers for 8/10 bit addresses. +*/ + +/* Delay between EEPROM clock transitions. + This "delay" forces out buffered PCI writes, which is sufficient to meet + the timing requirements of most EEPROMs. +*/ +#define eeprom_delay(ee_addr) readl(ee_addr) + +enum EEPROM_Ctrl_Bits { + EE_ShiftClk=0x04, EE_DataIn=0x01, EE_ChipSelect=0x08, EE_DataOut=0x02, +}; +#define EE_Write0 (EE_ChipSelect) +#define EE_Write1 (EE_ChipSelect | EE_DataIn) + +/* The EEPROM commands include the 01 preamble. */ +enum EEPROM_Cmds { + EE_WriteCmd=5, EE_ReadCmd=6, EE_EraseCmd=7, +}; + +static int eeprom_read(long addr, int location) +{ + long eeprom_addr = addr + EECtrl; + int read_cmd = (EE_ReadCmd << 6) | location; + int retval = 0; + int i; + + writel(EE_Write0, eeprom_addr); + + /* Shift the read command bits out. */ + for (i = 10; i >= 0; i--) { + int dataval = (read_cmd & (1 << i)) ? EE_Write1 : EE_Write0; + writel(dataval, eeprom_addr); + eeprom_delay(eeprom_addr); + writel(dataval | EE_ShiftClk, eeprom_addr); + eeprom_delay(eeprom_addr); + } + writel(EE_ChipSelect, eeprom_addr); + eeprom_delay(eeprom_addr); + + for (i = 15; i >= 0; i--) { + writel(EE_ChipSelect | EE_ShiftClk, eeprom_addr); + eeprom_delay(eeprom_addr); + retval |= (readl(eeprom_addr) & EE_DataOut) ? 1 << i : 0; + writel(EE_ChipSelect, eeprom_addr); + eeprom_delay(eeprom_addr); + } + + /* Terminate the EEPROM access. */ + writel(EE_Write0, eeprom_addr); + writel(0, eeprom_addr); + return retval; +} + +/* MII transceiver control section. + Read and write MII registers using software-generated serial MDIO + protocol. See the MII specifications or DP83840A data sheet for details. + + The maximum data clock rate is 2.5 Mhz. To meet minimum timing we + must flush writes to the PCI bus with a PCI read. */ +#define mdio_delay(mdio_addr) readl(mdio_addr) + +/* Set iff a MII transceiver on any interface requires mdio preamble. + This only set with older tranceivers, so the extra + code size of a per-interface flag is not worthwhile. */ +static char mii_preamble_required = 0; + +enum mii_reg_bits { + MDIO_ShiftClk=0x0040, MDIO_Data=0x0010, MDIO_EnbOutput=0x0020, +}; +#define MDIO_EnbIn (0) +#define MDIO_WRITE0 (MDIO_EnbOutput) +#define MDIO_WRITE1 (MDIO_Data | MDIO_EnbOutput) + +/* Generate the preamble required for initial synchronization and + a few older transceivers. */ +static void mdio_sync(long mdio_addr) +{ + int bits = 32; + + /* Establish sync by sending at least 32 logic ones. */ + while (--bits >= 0) { + writel(MDIO_WRITE1, mdio_addr); + mdio_delay(mdio_addr); + writel(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } +} + +static int mdio_read(struct net_device *dev, int phy_id, int location) +{ + long mdio_addr = dev->base_addr + EECtrl; + int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location; + int i, retval = 0; + + if (mii_preamble_required) + mdio_sync(mdio_addr); + + /* Shift the read command bits out. */ + for (i = 15; i >= 0; i--) { + int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; + + writel(dataval, mdio_addr); + mdio_delay(mdio_addr); + writel(dataval | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + /* Read the two transition, 16 data, and wire-idle bits. */ + for (i = 19; i > 0; i--) { + writel(MDIO_EnbIn, mdio_addr); + mdio_delay(mdio_addr); + retval = (retval << 1) | ((readl(mdio_addr) & MDIO_Data) ? 1 : 0); + writel(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + return (retval>>1) & 0xffff; +} + +static void mdio_write(struct net_device *dev, int phy_id, int location, int value) +{ + long mdio_addr = dev->base_addr + EECtrl; + int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value; + int i; + + if (mii_preamble_required) + mdio_sync(mdio_addr); + + /* Shift the command bits out. */ + for (i = 31; i >= 0; i--) { + int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; + + writel(dataval, mdio_addr); + mdio_delay(mdio_addr); + writel(dataval | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + /* Clear out extra bits. */ + for (i = 2; i > 0; i--) { + writel(MDIO_EnbIn, mdio_addr); + mdio_delay(mdio_addr); + writel(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + return; +} + +static int netdev_open(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int i; + u32 intr_status = readl(ioaddr + IntrStatus); + + /* We have not yet encountered a case where we need to reset the chip. */ + + MOD_INC_USE_COUNT; + + if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; + return -EAGAIN; + } + + /* Power up Xcvr. */ + writel((~CfgXcrOff & readl(ioaddr + ChipConfig)) | 0x00400000, + ioaddr + ChipConfig); + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: netdev_open() irq %d intr_status %8.8x.\n", + dev->name, dev->irq, intr_status); + + init_ring(dev); + +#if defined(ADDR_64BITS) && defined(__alpha__) + writel(virt_to_bus(np->rx_ring) >> 32, ioaddr + RxRingPtrHi); + writel(virt_to_bus(np->tx_ring) >> 32, ioaddr + TxRingPtrHi); +#else + writel(0, ioaddr + RxRingPtrHi); + writel(0, ioaddr + TxRingPtrHi); +#endif + writel(virt_to_bus(np->rx_ring), ioaddr + RxRingPtr); + writel(virt_to_bus(np->tx_ring), ioaddr + TxRingPtr); + + for (i = 0; i < 6; i += 2) { + writel(i, ioaddr + RxFilterAddr); + writel(dev->dev_addr[i] + (dev->dev_addr[i+1] << 8), + ioaddr + RxFilterData); + } + + /* Initialize other registers. */ + /* Configure the PCI bus bursts and FIFO thresholds. */ + /* Configure for standard, in-spec Ethernet. */ + + if (np->full_duplex || + ((readl(ioaddr + ChipConfig) & CfgFDX) == 0) ^ + ((np->drv_flags & FDXActiveLow) != 0)) { + np->tx_config = 0xD0801002; + np->rx_config = 0x10000020; + } else { + np->tx_config = 0x10801002; + np->rx_config = 0x0020; + } + if (dev->mtu > 1500) + np->rx_config |= 0x08000000; + writel(np->tx_config, ioaddr + TxConfig); + writel(np->rx_config, ioaddr + RxConfig); + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Setting TxConfig to %8.8x.\n", + dev->name, (int)readl(ioaddr + TxConfig)); + + if (dev->if_port == 0) + dev->if_port = np->default_port; + + np->in_interrupt = 0; + + check_duplex(dev); + set_rx_mode(dev); + netif_start_tx_queue(dev); + + /* Enable interrupts by setting the interrupt mask. */ + np->intr_enable = IntrNormalSummary | IntrAbnormalSummary | 0x1f; + writel(np->intr_enable, ioaddr + IntrMask); + writel(1, ioaddr + IntrEnable); + + writel(RxOn | TxOn, ioaddr + ChipCmd); + writel(4, ioaddr + StatsCtrl); /* Clear Stats */ + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Done netdev_open(), status: %x.\n", + dev->name, (int)readl(ioaddr + ChipCmd)); + + /* Set the timer to check for link beat. */ + init_timer(&np->timer); + np->timer.expires = jiffies + 3*HZ; + np->timer.data = (unsigned long)dev; + np->timer.function = &netdev_timer; /* timer handler */ + add_timer(&np->timer); + + return 0; +} + +static void check_duplex(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int duplex; + + if (np->duplex_lock) + return; + duplex = readl(ioaddr + ChipConfig) & CfgFDX ? 1 : 0; + if (np->full_duplex != duplex) { + np->full_duplex = duplex; + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO "%s: Setting %s-duplex based on negotiated link" + " capability.\n", dev->name, + duplex ? "full" : "half"); + if (duplex) { + np->rx_config |= 0x10000000; + np->tx_config |= 0xC0000000; + } else { + np->rx_config &= ~0x10000000; + np->tx_config &= ~0xC0000000; + } + writel(np->tx_config, ioaddr + TxConfig); + writel(np->rx_config, ioaddr + RxConfig); + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Setting TxConfig to %8.8x (%8.8x).\n", + dev->name, np->tx_config, (int)readl(ioaddr + TxConfig)); + } +} + +static void netdev_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int next_tick = 10*HZ; + + if (np->msg_level & NETIF_MSG_TIMER) + printk(KERN_DEBUG "%s: Driver monitor timer tick, status %8.8x.\n", + dev->name, (int)readl(ioaddr + ChipConfig)); + if (np->rx_q_empty) { + /* Trigger an interrupt to refill. */ + writel(SoftIntr, ioaddr + ChipCmd); + } + if (netif_queue_paused(dev) && + np->cur_tx - np->dirty_tx > 1 && + (jiffies - dev->trans_start) > TX_TIMEOUT) { + tx_timeout(dev); + } + check_duplex(dev); + np->timer.expires = jiffies + next_tick; + add_timer(&np->timer); +} + +static void tx_timeout(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + printk(KERN_WARNING "%s: Transmit timed out, status %8.8x," + " resetting...\n", dev->name, (int)readl(ioaddr + TxRingPtr)); + + if (np->msg_level & NETIF_MSG_TX_ERR) { + int i; + printk(KERN_DEBUG " Rx ring %p: ", np->rx_ring); + for (i = 0; i < RX_RING_SIZE; i++) + printk(" %8.8x", (unsigned int)np->rx_ring[i].cmd_status); + printk("\n"KERN_DEBUG" Tx ring %p: ", np->tx_ring); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" %4.4x", np->tx_ring[i].cmd_status); + printk("\n"); + } + + /* Perhaps we should reinitialize the hardware here. */ + dev->if_port = 0; + /* Stop and restart the chip's Tx processes . */ + + /* Trigger an immediate transmit demand. */ + + dev->trans_start = jiffies; + np->stats.tx_errors++; + return; +} + +/* Refill the Rx ring buffers, returning non-zero if not full. */ +static int rx_ring_fill(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + unsigned int entry; + + for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) { + entry = np->dirty_rx % RX_RING_SIZE; + if (np->rx_skbuff[entry] == NULL) { + struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); + np->rx_skbuff[entry] = skb; + if (skb == NULL) + return 1; /* Better luck next time. */ + skb->dev = dev; /* Mark as being used by this device. */ + np->rx_ring[entry].buf_addr = virt_to_bus(skb->tail); + } + np->rx_ring[entry].cmd_status = cpu_to_le32(DescIntr | np->rx_buf_sz); + } + return 0; +} + +/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ +static void init_ring(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + np->tx_full = 0; + np->cur_rx = np->cur_tx = 0; + np->dirty_rx = np->dirty_tx = 0; + + /* MAX(PKT_BUF_SZ, dev->mtu + 8); */ + /* I know you _want_ to change this without understanding it. Don't. */ + np->rx_buf_sz = (dev->mtu <= 1532 ? PKT_BUF_SZ : dev->mtu + 8); + np->rx_head_desc = &np->rx_ring[0]; + + /* Initialize all Rx descriptors. */ + for (i = 0; i < RX_RING_SIZE; i++) { + np->rx_ring[i].next_desc = virt_to_bus(&np->rx_ring[i+1]); + np->rx_ring[i].cmd_status = cpu_to_le32(DescOwn); + np->rx_skbuff[i] = 0; + } + /* Mark the last entry as wrapping the ring. */ + np->rx_ring[i-1].next_desc = virt_to_bus(&np->rx_ring[0]); + + for (i = 0; i < TX_RING_SIZE; i++) { + np->tx_skbuff[i] = 0; + np->tx_ring[i].next_desc = virt_to_bus(&np->tx_ring[i+1]); + np->tx_ring[i].cmd_status = 0; + } + np->tx_ring[i-1].next_desc = virt_to_bus(&np->tx_ring[0]); + + /* Fill in the Rx buffers. + Allocation failure just leaves a "negative" np->dirty_rx. */ + np->dirty_rx = (unsigned int)(0 - RX_RING_SIZE); + rx_ring_fill(dev); + + return; +} + +static int start_tx(struct sk_buff *skb, struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + unsigned int entry; + + /* Block a timer-based transmit from overlapping. This happens when + packets are presumed lost, and we use this check the Tx status. */ + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + tx_timeout(dev); + return 1; + } + + /* Note: Ordering is important here, set the field with the + "ownership" bit last, and only then increment cur_tx. + No spinlock is needed for either Tx or Rx. + */ + + /* Calculate the next Tx descriptor entry. */ + entry = np->cur_tx % TX_RING_SIZE; + + np->tx_skbuff[entry] = skb; + + np->tx_ring[entry].buf_addr = virt_to_bus(skb->data); + np->tx_ring[entry].cmd_status = cpu_to_le32(DescOwn|DescIntr | skb->len); + np->cur_tx++; + + /* StrongARM: Explicitly cache flush np->tx_ring and skb->data,skb->len. */ + + if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1) { + np->tx_full = 1; + /* Check for a just-cleared queue. */ + if (np->cur_tx - (volatile unsigned int)np->dirty_tx + < TX_QUEUE_LEN - 4) { + np->tx_full = 0; + netif_unpause_tx_queue(dev); + } else + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); /* Typical path */ + /* Wake the potentially-idle transmit channel. */ + writel(TxOn, dev->base_addr + ChipCmd); + + dev->trans_start = jiffies; + + if (np->msg_level & NETIF_MSG_TX_QUEUED) { + printk(KERN_DEBUG "%s: Transmit frame #%d queued in slot %d.\n", + dev->name, np->cur_tx, entry); + } + return 0; +} + +/* The interrupt handler does all of the Rx thread work and cleans up + after the Tx thread. */ +static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) +{ + struct net_device *dev = (struct net_device *)dev_instance; + struct netdev_private *np; + long ioaddr; + int boguscnt; + +#ifndef final_version /* Can never occur. */ + if (dev == NULL) { + printk (KERN_ERR "Netdev interrupt handler(): IRQ %d for unknown " + "device.\n", irq); + return; + } +#endif + + ioaddr = dev->base_addr; + np = (struct netdev_private *)dev->priv; + boguscnt = np->max_interrupt_work; + +#if defined(__i386__) && LINUX_VERSION_CODE < 0x020300 + /* A lock to prevent simultaneous entry bug on Intel SMP machines. */ + if (test_and_set_bit(0, (void*)&dev->interrupt)) { + printk(KERN_ERR"%s: SMP simultaneous entry of an interrupt handler.\n", + dev->name); + dev->interrupt = 0; /* Avoid halting machine. */ + return; + } +#endif + + do { + u32 intr_status = readl(ioaddr + IntrStatus); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Interrupt, status %8.8x.\n", + dev->name, intr_status); + + if (intr_status == 0 || intr_status == 0xffffffff) + break; + + /* Acknowledge all of the current interrupt sources ASAP. + Nominally the read above accomplishes this, but... */ + writel(intr_status & 0x001ffff, ioaddr + IntrStatus); + + if (intr_status & (IntrRxDone | IntrRxIntr)) { + netdev_rx(dev); + np->rx_q_empty = rx_ring_fill(dev); + } + + if (intr_status & (IntrRxIdle | IntrDrv)) { + unsigned int old_dirty_rx = np->dirty_rx; + if (rx_ring_fill(dev) == 0) + np->rx_q_empty = 0; + /* Restart Rx engine iff we did add a buffer. */ + if (np->dirty_rx != old_dirty_rx) + writel(RxOn, dev->base_addr + ChipCmd); + } + + for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { + int entry = np->dirty_tx % TX_RING_SIZE; + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Tx entry %d @%p status %8.8x.\n", + dev->name, entry, &np->tx_ring[entry], + np->tx_ring[entry].cmd_status); + if (np->tx_ring[entry].cmd_status & cpu_to_le32(DescOwn)) + break; + if (np->tx_ring[entry].cmd_status & cpu_to_le32(0x08000000)) { + if (np->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG "%s: Transmit done, Tx status %8.8x.\n", + dev->name, np->tx_ring[entry].cmd_status); + np->stats.tx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + np->stats.tx_bytes += np->tx_skbuff[entry]->len; +#endif + } else { /* Various Tx errors */ + int tx_status = le32_to_cpu(np->tx_ring[entry].cmd_status); + if (tx_status & 0x04010000) np->stats.tx_aborted_errors++; + if (tx_status & 0x02000000) np->stats.tx_fifo_errors++; + if (tx_status & 0x01000000) np->stats.tx_carrier_errors++; + if (tx_status & 0x00200000) np->stats.tx_window_errors++; + if (np->msg_level & NETIF_MSG_TX_ERR) + printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n", + dev->name, tx_status); + np->stats.tx_errors++; + } + /* Free the original skb. */ + dev_free_skb_irq(np->tx_skbuff[entry]); + np->tx_skbuff[entry] = 0; + } + /* Note the 4 slot hysteresis to mark the queue non-full. */ + if (np->tx_full + && np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) { + /* The ring is no longer full, allow new TX entries. */ + np->tx_full = 0; + netif_resume_tx_queue(dev); + } + + /* Abnormal error summary/uncommon events handlers. */ + if (intr_status & IntrAbnormalSummary) + netdev_error(dev, intr_status); + + if (--boguscnt < 0) { + printk(KERN_WARNING "%s: Too much work at interrupt, " + "status=0x%4.4x.\n", + dev->name, intr_status); + np->restore_intr_enable = 1; + break; + } + } while (1); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", + dev->name, (int)readl(ioaddr + IntrStatus)); + +#if defined(__i386__) && LINUX_VERSION_CODE < 0x020300 + clear_bit(0, (void*)&dev->interrupt); +#endif + return; +} + +/* This routine is logically part of the interrupt handler, but separated + for clarity and better register allocation. */ +static int netdev_rx(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int entry = np->cur_rx % RX_RING_SIZE; + int boguscnt = np->dirty_rx + RX_RING_SIZE - np->cur_rx; + s32 desc_status = le32_to_cpu(np->rx_head_desc->cmd_status); + + /* If the driver owns the next entry it's a new packet. Send it up. */ + while (desc_status < 0) { /* e.g. & DescOwn */ + if (np->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " In netdev_rx() entry %d status was %8.8x.\n", + entry, desc_status); + if (--boguscnt < 0) + break; + if ((desc_status & (DescMore|DescPktOK|RxTooLong)) != DescPktOK) { + if (desc_status & DescMore) { + printk(KERN_WARNING "%s: Oversized(?) Ethernet frame spanned " + "multiple buffers, entry %#x status %x.\n", + dev->name, np->cur_rx, desc_status); + np->stats.rx_length_errors++; + } else { + /* There was a error. */ + if (np->msg_level & NETIF_MSG_RX_ERR) + printk(KERN_DEBUG " netdev_rx() Rx error was %8.8x.\n", + desc_status); + np->stats.rx_errors++; + if (desc_status & 0x06000000) np->stats.rx_over_errors++; + if (desc_status & 0x00600000) np->stats.rx_length_errors++; + if (desc_status & 0x00140000) np->stats.rx_frame_errors++; + if (desc_status & 0x00080000) np->stats.rx_crc_errors++; + } + } else { + struct sk_buff *skb; + int pkt_len = (desc_status & 0x0fff) - 4; /* Omit CRC size. */ + /* Check if the packet is long enough to accept without copying + to a minimally-sized skbuff. */ + if (pkt_len < np->rx_copybreak + && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { + skb->dev = dev; + skb_reserve(skb, 2); /* 16 byte align the IP header */ +#if HAS_IP_COPYSUM + eth_copy_and_sum(skb, np->rx_skbuff[entry]->tail, pkt_len, 0); + skb_put(skb, pkt_len); +#else + memcpy(skb_put(skb, pkt_len), np->rx_skbuff[entry]->tail, + pkt_len); +#endif + } else { + skb_put(skb = np->rx_skbuff[entry], pkt_len); + np->rx_skbuff[entry] = NULL; + } +#ifndef final_version /* Remove after testing. */ + /* You will want this info for the initial debug. */ + if (np->msg_level & NETIF_MSG_PKTDATA) + printk(KERN_DEBUG " Rx data %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:" + "%2.2x %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x %2.2x%2.2x " + "%d.%d.%d.%d.\n", + skb->data[0], skb->data[1], skb->data[2], skb->data[3], + skb->data[4], skb->data[5], skb->data[6], skb->data[7], + skb->data[8], skb->data[9], skb->data[10], + skb->data[11], skb->data[12], skb->data[13], + skb->data[14], skb->data[15], skb->data[16], + skb->data[17]); +#endif + skb->protocol = eth_type_trans(skb, dev); + /* W/ hardware checksum: skb->ip_summed = CHECKSUM_UNNECESSARY; */ + netif_rx(skb); + dev->last_rx = jiffies; + np->stats.rx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + np->stats.rx_bytes += pkt_len; +#endif + } + entry = (++np->cur_rx) % RX_RING_SIZE; + np->rx_head_desc = &np->rx_ring[entry]; + desc_status = le32_to_cpu(np->rx_head_desc->cmd_status); + } + + /* Refill is now done in the main interrupt loop. */ + return 0; +} + +static void netdev_error(struct net_device *dev, int intr_status) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (intr_status & LinkChange) { + int chip_config = readl(ioaddr + ChipConfig); + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_NOTICE "%s: Link changed: Autonegotiation advertising" + " %4.4x partner %4.4x.\n", dev->name, + (int)readl(ioaddr + 0x90), (int)readl(ioaddr + 0x94)); + if (chip_config & CfgLinkGood) + netif_link_up(dev); + else + netif_link_down(dev); + check_duplex(dev); + } + if (intr_status & StatsMax) { + get_stats(dev); + } + if (intr_status & IntrTxUnderrun) { + /* Increase the Tx threshold, 32 byte units. */ + if ((np->tx_config & 0x3f) < 62) + np->tx_config += 2; /* +64 bytes */ + writel(np->tx_config, ioaddr + TxConfig); + } + if (intr_status & WOLPkt) { + int wol_status = readl(ioaddr + WOLCmd); + printk(KERN_NOTICE "%s: Link wake-up event %8.8x", + dev->name, wol_status); + } + if (intr_status & (RxStatusOverrun | IntrRxOverrun)) { + if (np->msg_level & NETIF_MSG_DRV) + printk(KERN_ERR "%s: Rx overflow! ns820 %8.8x.\n", + dev->name, intr_status); + np->stats.rx_fifo_errors++; + } + if (intr_status & ~(LinkChange|StatsMax|RxResetDone|TxResetDone| + RxStatusOverrun|0xA7ff)) { + if (np->msg_level & NETIF_MSG_DRV) + printk(KERN_ERR "%s: Something Wicked happened! ns820 %8.8x.\n", + dev->name, intr_status); + } + /* Hmmmmm, it's not clear how to recover from PCI faults. */ + if (intr_status & IntrPCIErr) { + np->stats.tx_fifo_errors++; + np->stats.rx_fifo_errors++; + } +} + +static struct net_device_stats *get_stats(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + int crc_errs = readl(ioaddr + RxCRCErrs); + + if (crc_errs != 0xffffffff) { + /* We need not lock this segment of code for SMP. + There is no atomic-add vulnerability for most CPUs, + and statistics are non-critical. */ + /* The chip only need report frame silently dropped. */ + np->stats.rx_crc_errors += crc_errs; + np->stats.rx_missed_errors += readl(ioaddr + RxMissed); + } + + return &np->stats; +} + +/* The little-endian AUTODIN II ethernet CRC calculations. + A big-endian version is also available. + This is slow but compact code. Do not use this routine for bulk data, + use a table-based routine instead. + This is common code and should be moved to net/core/crc.c. + Chips may use the upper or lower CRC bits, and may reverse and/or invert + them. Select the endian-ness that results in minimal calculations. +*/ +static unsigned const ethernet_polynomial_le = 0xedb88320U; +static inline unsigned ether_crc_le(int length, unsigned char *data) +{ + unsigned int crc = 0xffffffff; /* Initial value. */ + while(--length >= 0) { + unsigned char current_octet = *data++; + int bit; + for (bit = 8; --bit >= 0; current_octet >>= 1) { + if ((crc ^ current_octet) & 1) { + crc >>= 1; + crc ^= ethernet_polynomial_le; + } else + crc >>= 1; + } + } + return crc; +} + +static void set_rx_mode(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + u8 mc_filter[64]; /* Multicast hash filter */ + u32 rx_mode; + + if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ + /* Unconditionally log net taps. */ + printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); + rx_mode = AcceptBroadcast | AcceptAllMulticast | AcceptAllPhys + | AcceptMyPhys; + } else if ((dev->mc_count > np->multicast_filter_limit) + || (dev->flags & IFF_ALLMULTI)) { + rx_mode = AcceptBroadcast | AcceptAllMulticast | AcceptMyPhys; + } else { + struct dev_mc_list *mclist; + int i; + memset(mc_filter, 0, sizeof(mc_filter)); + for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; + i++, mclist = mclist->next) { + set_bit(ether_crc_le(ETH_ALEN, mclist->dmi_addr) & 0x7ff, + mc_filter); + } + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; + for (i = 0; i < 64; i += 2) { + writel(rx_mode + 0x200 + i, ioaddr + RxFilterAddr); + writel((mc_filter[i+1]<<8) + mc_filter[i], ioaddr + RxFilterData); + } + } + writel(rx_mode, ioaddr + RxFilterAddr); + np->cur_rx_mode = rx_mode; +} + +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + u16 *data = (u16 *)&rq->ifr_data; + u32 *data32 = (void *)&rq->ifr_data; + + switch(cmd) { + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ + data[0] = 1; + /* Fall Through */ + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + data[3] = mdio_read(dev, data[0] & 0x1f, data[1] & 0x1f); + return 0; + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (data[0] == 1) { + u16 miireg = data[1] & 0x1f; + u16 value = data[2]; + switch (miireg) { + case 0: + /* Check for autonegotiation on or reset. */ + np->duplex_lock = (value & 0x9000) ? 0 : 1; + if (np->duplex_lock) + np->full_duplex = (value & 0x0100) ? 1 : 0; + break; + case 4: np->advertising = value; break; + } + } + mdio_write(dev, data[0] & 0x1f, data[1] & 0x1f, data[2]); + return 0; + case SIOCGPARAMS: + data32[0] = np->msg_level; + data32[1] = np->multicast_filter_limit; + data32[2] = np->max_interrupt_work; + data32[3] = np->rx_copybreak; + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + np->msg_level = data32[0]; + np->multicast_filter_limit = data32[1]; + np->max_interrupt_work = data32[2]; + np->rx_copybreak = data32[3]; + return 0; + default: + return -EOPNOTSUPP; + } +} + +static int netdev_close(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + netif_stop_tx_queue(dev); + + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x " + "Int %2.2x.\n", + dev->name, (int)readl(ioaddr + ChipCmd), + (int)readl(ioaddr + IntrStatus)); + printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", + dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx); + } + + /* We don't want the timer to re-start anything. */ + del_timer(&np->timer); + + /* Disable interrupts using the mask. */ + writel(0, ioaddr + IntrMask); + writel(0, ioaddr + IntrEnable); + writel(2, ioaddr + StatsCtrl); /* Freeze Stats */ + + /* Stop the chip's Tx and Rx processes. */ + writel(RxOff | TxOff, ioaddr + ChipCmd); + + get_stats(dev); + +#ifdef __i386__ + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk("\n"KERN_DEBUG" Tx ring at %8.8x:\n", + (int)virt_to_bus(np->tx_ring)); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" #%d desc. %8.8x %8.8x.\n", + i, np->tx_ring[i].cmd_status, (u32)np->tx_ring[i].buf_addr); + printk("\n"KERN_DEBUG " Rx ring %8.8x:\n", + (int)virt_to_bus(np->rx_ring)); + for (i = 0; i < RX_RING_SIZE; i++) { + printk(KERN_DEBUG " #%d desc. %8.8x %8.8x\n", + i, np->rx_ring[i].cmd_status, (u32)np->rx_ring[i].buf_addr); + } + } +#endif /* __i386__ debugging only */ + + free_irq(dev->irq, dev); + + /* Free all the skbuffs in the Rx queue. */ + for (i = 0; i < RX_RING_SIZE; i++) { + np->rx_ring[i].cmd_status = 0; + np->rx_ring[i].buf_addr = 0xBADF00D0; /* An invalid address. */ + if (np->rx_skbuff[i]) { +#if LINUX_VERSION_CODE < 0x20100 + np->rx_skbuff[i]->free = 1; +#endif + dev_free_skb(np->rx_skbuff[i]); + } + np->rx_skbuff[i] = 0; + } + for (i = 0; i < TX_RING_SIZE; i++) { + if (np->tx_skbuff[i]) + dev_free_skb(np->tx_skbuff[i]); + np->tx_skbuff[i] = 0; + } + + /* Power down Xcvr. */ + writel(CfgXcrOff | readl(ioaddr + ChipConfig), ioaddr + ChipConfig); + + MOD_DEC_USE_COUNT; + + return 0; +} + +static int power_event(void *dev_instance, int event) +{ + struct net_device *dev = dev_instance; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_ATTACH: + MOD_INC_USE_COUNT; + break; + case DRV_SUSPEND: + /* Disable interrupts, freeze stats, stop Tx and Rx. */ + writel(0, ioaddr + IntrEnable); + writel(2, ioaddr + StatsCtrl); + writel(RxOff | TxOff, ioaddr + ChipCmd); + writel(CfgXcrOff | readl(ioaddr + ChipConfig), ioaddr + ChipConfig); + break; + case DRV_RESUME: + /* This is incomplete: the open() actions should be repeated. */ + writel(~CfgXcrOff & readl(ioaddr + ChipConfig), ioaddr + ChipConfig); + set_rx_mode(dev); + writel(np->intr_enable, ioaddr + IntrEnable); + writel(1, ioaddr + IntrEnable); + writel(RxOn | TxOn, ioaddr + ChipCmd); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + /* Some, but not all, kernel versions close automatically. */ + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + unregister_netdev(dev); + release_region(dev->base_addr, pci_id_tbl[np->chip_id].io_size); + for (devp = &root_net_dev; *devp; devp = next) { + next = &((struct netdev_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (np->priv_addr) + kfree(np->priv_addr); + kfree(dev); + MOD_DEC_USE_COUNT; + break; + } + } + + return 0; +} + + +#ifdef MODULE +int init_module(void) +{ + /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); +#ifdef CARDBUS + register_driver(ðerdev_ops); + return 0; +#else + return pci_drv_register(&ns820_drv_id, NULL); +#endif +} + +void cleanup_module(void) +{ + struct net_device *next_dev; + +#ifdef CARDBUS + unregister_driver(ðerdev_ops); +#else + pci_drv_unregister(&ns820_drv_id); +#endif + + /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ + while (root_net_dev) { + struct netdev_private *np = (void *)(root_net_dev->priv); + unregister_netdev(root_net_dev); + iounmap((char *)root_net_dev->base_addr); + next_dev = np->next_module; + if (np->priv_addr) + kfree(np->priv_addr); + kfree(root_net_dev); + root_net_dev = next_dev; + } +} + +#endif /* MODULE */ + +/* + * Local variables: + * compile-command: "make KERNVER=`uname -r` ns820.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c ns820.c" + * simple-compile-command: "gcc -DMODULE -O6 -c ns820.c" + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ diff --git a/linux/src/drivers/net/pci-scan.c b/linux/src/drivers/net/pci-scan.c new file mode 100644 index 0000000..6187d5d --- /dev/null +++ b/linux/src/drivers/net/pci-scan.c @@ -0,0 +1,659 @@ +/* pci-scan.c: Linux PCI network adapter support code. */ +/* + Originally written 1999-2003 by Donald Becker. + + This software may be used and distributed according to the terms + of the GNU General Public License (GPL), incorporated herein by + reference. Drivers interacting with these functions are derivative + works and thus also must be licensed under the GPL and include an explicit + GPL notice. + + This code provides common scan and activate functions for PCI network + interfaces. + + The author may be reached as becker@scyld.com, or + Donald Becker + Scyld Computing Corporation + 914 Bay Ridge Road, Suite 220 + Annapolis MD 21403 + + Other contributers: +*/ +static const char version[] = +"pci-scan.c:v1.12 7/30/2003 Donald Becker <becker@scyld.com>" +" http://www.scyld.com/linux/drivers.html\n"; + +/* A few user-configurable values that may be modified when a module. */ + +static int msg_level = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ +static int min_pci_latency = 32; + +#if ! defined(__KERNEL__) +#define __KERNEL__ 1 +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with the proper options, including "-O". +#endif + +#if defined(MODULE) && ! defined(EXPORT_SYMTAB) +#define EXPORT_SYMTAB +#endif + +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + +#include <linux/version.h> +#if defined(MODVERSIONS) +#include <linux/modversions.h> +#endif +#if LINUX_VERSION_CODE < 0x20500 && defined(MODVERSIONS) +/* Another interface semantics screw-up. */ +#include <linux/module.h> +#include <linux/modversions.h> +#else +#include <linux/module.h> +#endif + +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/errno.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20300 +/* Bogus change in the middle of a "stable" kernel series. + Also, in 2.4.7+ slab must come before interrupt.h to avoid breakage. */ +#include <linux/slab.h> +#else +#include <linux/malloc.h> +#endif +#include <asm/io.h> +#include "pci-scan.h" +#include "kern_compat.h" +#if defined(CONFIG_APM) && LINUX_VERSION_CODE < 0x20400 +#include <linux/apm_bios.h> +#endif +#ifdef CONFIG_PM +/* New in 2.4 kernels, pointlessly incompatible with earlier APM. */ +#include <linux/pm.h> +#endif + +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif +#if (LINUX_VERSION_CODE < 0x20100) +#define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */ +#define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */ +#define PCI_CAP_ID_PM 0x01 /* Power Management */ +#endif + +int (*register_hotswap_hook)(struct drv_id_info *did); +void (*unregister_hotswap_hook)(struct drv_id_info *did); + +#if LINUX_VERSION_CODE > 0x20118 && defined(MODULE) +MODULE_LICENSE("GPL"); +MODULE_PARM(msg_level, "i"); +MODULE_PARM(min_pci_latency, "i"); +MODULE_PARM_DESC(msg_level, "Enable additional status messages (0-7)"); +MODULE_PARM_DESC(min_pci_latency, + "Minimum value for the PCI Latency Timer settings"); +#if defined(EXPORT_SYMTAB) +EXPORT_SYMBOL_NOVERS(pci_drv_register); +EXPORT_SYMBOL_NOVERS(pci_drv_unregister); +EXPORT_SYMBOL_NOVERS(acpi_wake); +EXPORT_SYMBOL_NOVERS(acpi_set_pwr_state); +EXPORT_SYMBOL_NOVERS(register_hotswap_hook); +EXPORT_SYMBOL_NOVERS(unregister_hotswap_hook); +#endif +#endif + +/* List of registered drivers. */ +static struct drv_id_info *drv_list; +/* List of detected PCI devices, for APM events. */ +static struct dev_info { + struct dev_info *next; + void *dev; + struct drv_id_info *drv_id; + int flags; +} *dev_list; + +/* + This code is not intended to support every configuration. + It is intended to minimize duplicated code by providing the functions + needed in almost every PCI driver. + + The "no kitchen sink" policy: + Additional features and code will be added to this module only if more + than half of the drivers for common hardware would benefit from the feature. +*/ + +/* + Ideally we would detect and number all cards of a type (e.g. network) in + PCI slot order. + But that does not work with hot-swap card, CardBus cards and added drivers. + So instead we detect just the each chip table in slot order. + + This routine takes a PCI ID table, scans the PCI bus, and calls the + associated attach/probe1 routine with the hardware already activated and + single I/O or memory address already mapped. + + This routine will later be supplemented with CardBus and hot-swap PCI + support using the same table. Thus the pci_chip_tbl[] should not be + marked as __initdata. +*/ + +#if LINUX_VERSION_CODE >= 0x20200 +/* Grrrr.. complex abstaction layers with negative benefit. */ +int pci_drv_register(struct drv_id_info *drv_id, void *initial_device) +{ + int chip_idx, cards_found = 0; + struct pci_dev *pdev = NULL; + struct pci_id_info *pci_tbl = drv_id->pci_dev_tbl; + struct drv_id_info *drv; + void *newdev; + + + /* Ignore a double-register attempt. */ + for (drv = drv_list; drv; drv = drv->next) + if (drv == drv_id) + return -EBUSY; + + while ((pdev = pci_find_class(drv_id->pci_class, pdev)) != 0) { + u32 pci_id, pci_subsys_id, pci_class_rev; + u16 pci_command, new_command; + int pci_flags; + long pciaddr; /* Bus address. */ + long ioaddr; /* Mapped address for this processor. */ + + pci_read_config_dword(pdev, PCI_VENDOR_ID, &pci_id); + /* Offset 0x2c is PCI_SUBSYSTEM_ID aka PCI_SUBSYSTEM_VENDOR_ID. */ + pci_read_config_dword(pdev, 0x2c, &pci_subsys_id); + pci_read_config_dword(pdev, PCI_REVISION_ID, &pci_class_rev); + + if (msg_level > 3) + printk(KERN_DEBUG "PCI ID %8.8x subsystem ID is %8.8x.\n", + pci_id, pci_subsys_id); + for (chip_idx = 0; pci_tbl[chip_idx].name; chip_idx++) { + struct pci_id_info *chip = &pci_tbl[chip_idx]; + if ((pci_id & chip->id.pci_mask) == chip->id.pci + && (pci_subsys_id&chip->id.subsystem_mask) == chip->id.subsystem + && (pci_class_rev&chip->id.revision_mask) == chip->id.revision) + break; + } + if (pci_tbl[chip_idx].name == 0) /* Compiled out! */ + continue; + + pci_flags = pci_tbl[chip_idx].pci_flags; +#if LINUX_VERSION_CODE >= 0x2030C + /* Wow. A oversized, hard-to-use abstraction. Bogus. */ + pciaddr = pdev->resource[(pci_flags >> 4) & 7].start; +#else + pciaddr = pdev->base_address[(pci_flags >> 4) & 7]; +#if defined(__alpha__) /* Really any machine with 64 bit addressing. */ + if (pci_flags & PCI_ADDR_64BITS) + pciaddr |= ((long)pdev->base_address[((pci_flags>>4)&7)+ 1]) << 32; +#endif +#endif + if (msg_level > 2) + printk(KERN_INFO "Found %s at PCI address %#lx, mapped IRQ %d.\n", + pci_tbl[chip_idx].name, pciaddr, pdev->irq); + + if ( ! (pci_flags & PCI_UNUSED_IRQ) && + (pdev->irq == 0 || pdev->irq == 255)) { + if (pdev->bus->number == 32) /* Broken CardBus activation. */ + printk(KERN_WARNING "Resources for CardBus device '%s' have" + " not been allocated.\n" + KERN_WARNING "Activation has been delayed.\n", + pci_tbl[chip_idx].name); + else + printk(KERN_WARNING "PCI device '%s' was not assigned an " + "IRQ.\n" + KERN_WARNING "It will not be activated.\n", + pci_tbl[chip_idx].name); + continue; + } + if ((pci_flags & PCI_BASE_ADDRESS_SPACE_IO)) { + ioaddr = pciaddr & PCI_BASE_ADDRESS_IO_MASK; + if (check_region(ioaddr, pci_tbl[chip_idx].io_size)) + continue; + } else if ((ioaddr = (long)ioremap(pciaddr & PCI_BASE_ADDRESS_MEM_MASK, + pci_tbl[chip_idx].io_size)) == 0) { + printk(KERN_INFO "Failed to map PCI address %#lx for device " + "'%s'.\n", pciaddr, pci_tbl[chip_idx].name); + continue; + } + if ( ! (pci_flags & PCI_NO_ACPI_WAKE)) + acpi_wake(pdev); + pci_read_config_word(pdev, PCI_COMMAND, &pci_command); + new_command = pci_command | (pci_flags & 7); + if (pci_command != new_command) { + printk(KERN_INFO " The PCI BIOS has not enabled the" + " device at %d/%d! Updating PCI command %4.4x->%4.4x.\n", + pdev->bus->number, pdev->devfn, pci_command, new_command); + pci_write_config_word(pdev, PCI_COMMAND, new_command); + } + + newdev = drv_id->probe1(pdev, initial_device, + ioaddr, pdev->irq, chip_idx, cards_found); + if (newdev == NULL) + continue; + initial_device = 0; + cards_found++; + if (pci_flags & PCI_COMMAND_MASTER) { + pci_set_master(pdev); + if ( ! (pci_flags & PCI_NO_MIN_LATENCY)) { + u8 pci_latency; + pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency); + if (pci_latency < min_pci_latency) { + printk(KERN_INFO " PCI latency timer (CFLT) is " + "unreasonably low at %d. Setting to %d clocks.\n", + pci_latency, min_pci_latency); + pci_write_config_byte(pdev, PCI_LATENCY_TIMER, + min_pci_latency); + } + } + } + { + struct dev_info *devp = + kmalloc(sizeof(struct dev_info), GFP_KERNEL); + if (devp == 0) + continue; + devp->next = dev_list; + devp->dev = newdev; + devp->drv_id = drv_id; + dev_list = devp; + } + } + + if (((drv_id->flags & PCI_HOTSWAP) + && register_hotswap_hook && (*register_hotswap_hook)(drv_id) == 0) + || cards_found) { + MOD_INC_USE_COUNT; + drv_id->next = drv_list; + drv_list = drv_id; + return 0; + } else + return -ENODEV; +} +#else +int pci_drv_register(struct drv_id_info *drv_id, void *initial_device) +{ + int pci_index, cards_found = 0; + unsigned char pci_bus, pci_device_fn; + struct pci_dev *pdev; + struct pci_id_info *pci_tbl = drv_id->pci_dev_tbl; + void *newdev; + + if ( ! pcibios_present()) + return -ENODEV; + + for (pci_index = 0; pci_index < 0xff; pci_index++) { + u32 pci_id, subsys_id, pci_class_rev; + u16 pci_command, new_command; + int chip_idx, irq, pci_flags; + long pciaddr; + long ioaddr; + u32 pci_busaddr; + u8 pci_irq_line; + + if (pcibios_find_class (drv_id->pci_class, pci_index, + &pci_bus, &pci_device_fn) + != PCIBIOS_SUCCESSFUL) + break; + pcibios_read_config_dword(pci_bus, pci_device_fn, + PCI_VENDOR_ID, &pci_id); + /* Offset 0x2c is PCI_SUBSYSTEM_ID aka PCI_SUBSYSTEM_VENDOR_ID. */ + pcibios_read_config_dword(pci_bus, pci_device_fn, 0x2c, &subsys_id); + pcibios_read_config_dword(pci_bus, pci_device_fn, + PCI_REVISION_ID, &pci_class_rev); + + for (chip_idx = 0; pci_tbl[chip_idx].name; chip_idx++) { + struct pci_id_info *chip = &pci_tbl[chip_idx]; + if ((pci_id & chip->id.pci_mask) == chip->id.pci + && (subsys_id & chip->id.subsystem_mask) == chip->id.subsystem + && (pci_class_rev&chip->id.revision_mask) == chip->id.revision) + break; + } + if (pci_tbl[chip_idx].name == 0) /* Compiled out! */ + continue; + + pci_flags = pci_tbl[chip_idx].pci_flags; + pdev = pci_find_slot(pci_bus, pci_device_fn); + pcibios_read_config_byte(pci_bus, pci_device_fn, + PCI_INTERRUPT_LINE, &pci_irq_line); + irq = pci_irq_line; + pcibios_read_config_dword(pci_bus, pci_device_fn, + ((pci_flags >> 2) & 0x1C) + 0x10, + &pci_busaddr); + pciaddr = pci_busaddr; +#if defined(__alpha__) + if (pci_flags & PCI_ADDR_64BITS) { + pcibios_read_config_dword(pci_bus, pci_device_fn, + ((pci_flags >> 2) & 0x1C) + 0x14, + &pci_busaddr); + pciaddr |= ((long)pci_busaddr)<<32; + } +#endif + + if (msg_level > 2) + printk(KERN_INFO "Found %s at PCI address %#lx, IRQ %d.\n", + pci_tbl[chip_idx].name, pciaddr, irq); + + if ( ! (pci_flags & PCI_UNUSED_IRQ) && + (irq == 0 || irq == 255)) { + if (pci_bus == 32) /* Broken CardBus activation. */ + printk(KERN_WARNING "Resources for CardBus device '%s' have" + " not been allocated.\n" + KERN_WARNING "It will not be activated.\n", + pci_tbl[chip_idx].name); + else + printk(KERN_WARNING "PCI device '%s' was not assigned an " + "IRQ.\n" + KERN_WARNING "It will not be activated.\n", + pci_tbl[chip_idx].name); + continue; + } + + if ((pciaddr & PCI_BASE_ADDRESS_SPACE_IO)) { + ioaddr = pciaddr & PCI_BASE_ADDRESS_IO_MASK; + if (check_region(ioaddr, pci_tbl[chip_idx].io_size)) + continue; + } else if ((ioaddr = (long)ioremap(pciaddr & PCI_BASE_ADDRESS_MEM_MASK, + pci_tbl[chip_idx].io_size)) == 0) { + printk(KERN_INFO "Failed to map PCI address %#lx.\n", + pciaddr); + continue; + } + + if ( ! (pci_flags & PCI_NO_ACPI_WAKE)) + acpi_wake(pdev); + pcibios_read_config_word(pci_bus, pci_device_fn, + PCI_COMMAND, &pci_command); + new_command = pci_command | (pci_flags & 7); + if (pci_command != new_command) { + printk(KERN_INFO " The PCI BIOS has not enabled the" + " device at %d/%d! Updating PCI command %4.4x->%4.4x.\n", + pci_bus, pci_device_fn, pci_command, new_command); + pcibios_write_config_word(pci_bus, pci_device_fn, + PCI_COMMAND, new_command); + } + + newdev = drv_id->probe1(pdev, initial_device, + ioaddr, irq, chip_idx, cards_found); + + if (newdev && (pci_flags & PCI_COMMAND_MASTER) && + ! (pci_flags & PCI_NO_MIN_LATENCY)) { + u8 pci_latency; + pcibios_read_config_byte(pci_bus, pci_device_fn, + PCI_LATENCY_TIMER, &pci_latency); + if (pci_latency < min_pci_latency) { + printk(KERN_INFO " PCI latency timer (CFLT) is " + "unreasonably low at %d. Setting to %d clocks.\n", + pci_latency, min_pci_latency); + pcibios_write_config_byte(pci_bus, pci_device_fn, + PCI_LATENCY_TIMER, min_pci_latency); + } + } + if (newdev) { + struct dev_info *devp = + kmalloc(sizeof(struct dev_info), GFP_KERNEL); + if (devp) { + devp->next = dev_list; + devp->dev = newdev; + devp->drv_id = drv_id; + dev_list = devp; + } + } + initial_device = 0; + cards_found++; + } + + if (((drv_id->flags & PCI_HOTSWAP) + && register_hotswap_hook && (*register_hotswap_hook)(drv_id) == 0) + || cards_found) { + MOD_INC_USE_COUNT; + drv_id->next = drv_list; + drv_list = drv_id; + return 0; + } else + return cards_found ? 0 : -ENODEV; +} +#endif + +void pci_drv_unregister(struct drv_id_info *drv_id) +{ + struct drv_id_info **drvp; + struct dev_info **devip = &dev_list; + + if (unregister_hotswap_hook) + (*unregister_hotswap_hook)(drv_id); + + for (drvp = &drv_list; *drvp; drvp = &(*drvp)->next) + if (*drvp == drv_id) { + *drvp = (*drvp)->next; + MOD_DEC_USE_COUNT; + break; + } + while (*devip) { + struct dev_info *thisdevi = *devip; + if (thisdevi->drv_id == drv_id) { + *devip = thisdevi->next; + kfree(thisdevi); + } else + devip = &(*devip)->next; + } + + return; +} + +#if LINUX_VERSION_CODE < 0x20400 +/* + Search PCI configuration space for the specified capability registers. + Return the index, or 0 on failure. + The 2.4 kernel now includes this function. +*/ +int pci_find_capability(struct pci_dev *pdev, int findtype) +{ + u16 pci_status, cap_type; + u8 pci_cap_idx; + int cap_idx; + + pci_read_config_word(pdev, PCI_STATUS, &pci_status); + if ( ! (pci_status & PCI_STATUS_CAP_LIST)) + return 0; + pci_read_config_byte(pdev, PCI_CAPABILITY_LIST, &pci_cap_idx); + cap_idx = pci_cap_idx; + for (cap_idx = pci_cap_idx; cap_idx; cap_idx = (cap_type >> 8) & 0xff) { + pci_read_config_word(pdev, cap_idx, &cap_type); + if ((cap_type & 0xff) == findtype) + return cap_idx; + } + return 0; +} +#endif + +/* Change a device from D3 (sleep) to D0 (active). + Return the old power state. + This is more complicated than you might first expect since most cards + forget all PCI config info during the transition! */ +int acpi_wake(struct pci_dev *pdev) +{ + u32 base[5], romaddr; + u16 pci_command, pwr_command; + u8 pci_latency, pci_cacheline, irq; + int i, pwr_cmd_idx = pci_find_capability(pdev, PCI_CAP_ID_PM); + + if (pwr_cmd_idx == 0) + return 0; + pci_read_config_word(pdev, pwr_cmd_idx + 4, &pwr_command); + if ((pwr_command & 3) == 0) + return 0; + pci_read_config_word(pdev, PCI_COMMAND, &pci_command); + for (i = 0; i < 5; i++) + pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0 + i*4, + &base[i]); + pci_read_config_dword(pdev, PCI_ROM_ADDRESS, &romaddr); + pci_read_config_byte( pdev, PCI_LATENCY_TIMER, &pci_latency); + pci_read_config_byte( pdev, PCI_CACHE_LINE_SIZE, &pci_cacheline); + pci_read_config_byte( pdev, PCI_INTERRUPT_LINE, &irq); + + pci_write_config_word(pdev, pwr_cmd_idx + 4, 0x0000); + for (i = 0; i < 5; i++) + if (base[i]) + pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0 + i*4, + base[i]); + pci_write_config_dword(pdev, PCI_ROM_ADDRESS, romaddr); + pci_write_config_byte( pdev, PCI_INTERRUPT_LINE, irq); + pci_write_config_byte( pdev, PCI_CACHE_LINE_SIZE, pci_cacheline); + pci_write_config_byte( pdev, PCI_LATENCY_TIMER, pci_latency); + pci_write_config_word( pdev, PCI_COMMAND, pci_command | 5); + return pwr_command & 3; +} + +int acpi_set_pwr_state(struct pci_dev *pdev, enum acpi_pwr_state new_state) +{ + u16 pwr_command; + int pwr_cmd_idx = pci_find_capability(pdev, PCI_CAP_ID_PM); + + if (pwr_cmd_idx == 0) + return 0; + pci_read_config_word(pdev, pwr_cmd_idx + 4, &pwr_command); + if ((pwr_command & 3) == ACPI_D3 && new_state != ACPI_D3) + acpi_wake(pdev); /* The complicated sequence. */ + pci_write_config_word(pdev, pwr_cmd_idx + 4, + (pwr_command & ~3) | new_state); + return pwr_command & 3; +} + +#if defined(CONFIG_PM) +static int handle_pm_event(struct pm_dev *dev, int event, void *data) +{ + static int down = 0; + struct dev_info *devi; + int pwr_cmd = -1; + + if (msg_level > 1) + printk(KERN_DEBUG "pci-scan: Handling power event %d for driver " + "list %s...\n", + event, drv_list->name); + switch (event) { + case PM_SUSPEND: + if (down) { + printk(KERN_DEBUG "pci-scan: Received extra suspend event\n"); + break; + } + down = 1; + for (devi = dev_list; devi; devi = devi->next) + if (devi->drv_id->pwr_event) + devi->drv_id->pwr_event(devi->dev, DRV_SUSPEND); + break; + case PM_RESUME: + if (!down) { + printk(KERN_DEBUG "pci-scan: Received bogus resume event\n"); + break; + } + for (devi = dev_list; devi; devi = devi->next) { + if (devi->drv_id->pwr_event) { + if (msg_level > 3) + printk(KERN_DEBUG "pci-scan: Calling resume for %s " + "device.\n", devi->drv_id->name); + devi->drv_id->pwr_event(devi->dev, DRV_RESUME); + } + } + down = 0; + break; + case PM_SET_WAKEUP: pwr_cmd = DRV_PWR_WakeOn; break; + case PM_EJECT: pwr_cmd = DRV_DETACH; break; + default: + printk(KERN_DEBUG "pci-scan: Unknown power management event %d.\n", + event); + } + if (pwr_cmd >= 0) + for (devi = dev_list; devi; devi = devi->next) + if (devi->drv_id->pwr_event) + devi->drv_id->pwr_event(devi->dev, pwr_cmd); + + return 0; +} + +#elif defined(CONFIG_APM) && LINUX_VERSION_CODE < 0x20400 +static int handle_apm_event(apm_event_t event) +{ + static int down = 0; + struct dev_info *devi; + + if (msg_level > 1) + printk(KERN_DEBUG "pci-scan: Handling APM event %d for driver " + "list %s...\n", + event, drv_list->name); + return 0; + switch (event) { + case APM_SYS_SUSPEND: + case APM_USER_SUSPEND: + if (down) { + printk(KERN_DEBUG "pci-scan: Received extra suspend event\n"); + break; + } + down = 1; + for (devi = dev_list; devi; devi = devi->next) + if (devi->drv_id->pwr_event) + devi->drv_id->pwr_event(devi->dev, DRV_SUSPEND); + break; + case APM_NORMAL_RESUME: + case APM_CRITICAL_RESUME: + if (!down) { + printk(KERN_DEBUG "pci-scan: Received bogus resume event\n"); + break; + } + for (devi = dev_list; devi; devi = devi->next) + if (devi->drv_id->pwr_event) + devi->drv_id->pwr_event(devi->dev, DRV_RESUME); + down = 0; + break; + } + return 0; +} +#endif /* CONFIG_APM */ + +#ifdef MODULE +int init_module(void) +{ + if (msg_level) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s", version); + +#if defined(CONFIG_PM) + pm_register(PM_PCI_DEV, 0, &handle_pm_event); +#elif defined(CONFIG_APM) && LINUX_VERSION_CODE < 0x20400 + apm_register_callback(&handle_apm_event); +#endif + return 0; +} +void cleanup_module(void) +{ +#if defined(CONFIG_PM) + pm_unregister_all(&handle_pm_event); +#elif defined(CONFIG_APM) && LINUX_VERSION_CODE < 0x20400 + apm_unregister_callback(&handle_apm_event); +#endif + if (dev_list != NULL) + printk(KERN_WARNING "pci-scan: Unfreed device references.\n"); + return; +} +#endif + + +/* + * Local variables: + * compile-command: "gcc -DMODULE -D__KERNEL__ -DEXPORT_SYMTAB -Wall -Wstrict-prototypes -O6 -c pci-scan.c" + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ diff --git a/linux/src/drivers/net/pci-scan.h b/linux/src/drivers/net/pci-scan.h new file mode 100644 index 0000000..649b34b --- /dev/null +++ b/linux/src/drivers/net/pci-scan.h @@ -0,0 +1,90 @@ +#ifndef _PCI_SCAN_H +#define _PCI_SCAN_H +/* + version 1.02 $Version:$ $Date: 2006/01/22 15:54:41 $ + Copyright 1999-2001 Donald Becker / Scyld Computing Corporation + This software is part of the Linux kernel. It may be used and + distributed according to the terms of the GNU Public License, + incorporated herein by reference. +*/ + +/* + These are the structures in the table that drives the PCI probe routines. + Note the matching code uses a bitmask: more specific table entries should + be placed before "catch-all" entries. + + The table must be zero terminated. +*/ +enum pci_id_flags_bits { + /* Set PCI command register bits before calling probe1(). */ + PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4, + /* Read and map the single following PCI BAR. */ + PCI_ADDR0=0<<4, PCI_ADDR1=1<<4, PCI_ADDR2=2<<4, PCI_ADDR3=3<<4, + PCI_ADDR_64BITS=0x100, PCI_NO_ACPI_WAKE=0x200, PCI_NO_MIN_LATENCY=0x400, + PCI_UNUSED_IRQ=0x800, +}; + +struct pci_id_info { + const char *name; + struct match_info { + int pci, pci_mask, subsystem, subsystem_mask; + int revision, revision_mask; /* Only 8 bits. */ + } id; + enum pci_id_flags_bits pci_flags; + int io_size; /* Needed for I/O region check or ioremap(). */ + int drv_flags; /* Driver use, intended as capability flags. */ +}; + +enum drv_id_flags { + PCI_HOTSWAP=1, /* Leave module loaded for Cardbus-like chips. */ +}; +enum drv_pwr_action { + DRV_NOOP, /* No action. */ + DRV_ATTACH, /* The driver may expect power ops. */ + DRV_SUSPEND, /* Machine suspending, next event RESUME or DETACH. */ + DRV_RESUME, /* Resume from previous SUSPEND */ + DRV_DETACH, /* Card will-be/is gone. Valid from SUSPEND! */ + DRV_PWR_WakeOn, /* Put device in e.g. Wake-On-LAN mode. */ + DRV_PWR_DOWN, /* Go to lowest power mode. */ + DRV_PWR_UP, /* Go to normal power mode. */ +}; + +struct drv_id_info { + const char *name; /* Single-word driver name. */ + int flags; + int pci_class; /* Typically PCI_CLASS_NETWORK_ETHERNET<<8. */ + struct pci_id_info *pci_dev_tbl; + void *(*probe1)(struct pci_dev *pdev, void *dev_ptr, + long ioaddr, int irq, int table_idx, int fnd_cnt); + /* Optional, called for suspend, resume and detach. */ + int (*pwr_event)(void *dev, int event); + /* Internal values. */ + struct drv_id_info *next; + void *cb_ops; +}; + +/* PCI scan and activate. + Scan PCI-like hardware, calling probe1(..,dev,..) on devices that match. + Returns -ENODEV, a negative number, if no cards are found. */ + +extern int pci_drv_register(struct drv_id_info *drv_id, void *initial_device); +extern void pci_drv_unregister(struct drv_id_info *drv_id); + + +/* ACPI routines. + Wake (change to ACPI D0 state) or set the ACPI power level of a sleeping + ACPI device. Returns the old power state. */ + +int acpi_wake(struct pci_dev *pdev); +enum acpi_pwr_state {ACPI_D0, ACPI_D1, ACPI_D2, ACPI_D3}; +int acpi_set_pwr_state(struct pci_dev *pdev, enum acpi_pwr_state state); + + +/* + * Local variables: + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ +#endif diff --git a/linux/src/drivers/net/rtl8139.c b/linux/src/drivers/net/rtl8139.c index 0bd11a5..1d00f68 100644 --- a/linux/src/drivers/net/rtl8139.c +++ b/linux/src/drivers/net/rtl8139.c @@ -1,34 +1,62 @@ /* rtl8139.c: A RealTek RTL8129/8139 Fast Ethernet driver for Linux. */ /* - Written 1997-1998 by Donald Becker. - - This software may be used and distributed according to the terms - of the GNU Public License, incorporated herein by reference. - All other rights reserved. + Written and Copyright 1997-2003 by Donald Becker. + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. This driver is for boards based on the RTL8129 and RTL8139 PCI ethernet chips. - The author may be reached as becker@CESDIS.gsfc.nasa.gov, or C/O - Center of Excellence in Space Data and Information Sciences - Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771 + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 410 Severn Ave., Suite 210 + Annapolis MD 21403 Support and updates available at - http://cesdis.gsfc.nasa.gov/linux/drivers/rtl8139.html + http://www.scyld.com/network/rtl8139.html - Twister-tuning code contributed by Kinston <shangh@realtek.com.tw>. + Twister-tuning table provided by Kinston <shangh@realtek.com.tw>. */ -static const char *version = -"rtl8139.c:v0.99B 4/7/98 Donald Becker http://cesdis.gsfc.nasa.gov/linux/drivers/rtl8139.html\n"; +/* These identify the driver base version and may not be removed. */ +static const char versionA[] = +"rtl8139.c:v1.23a 8/24/2003 Donald Becker, becker@scyld.com.\n"; +static const char versionB[] = +" http://www.scyld.com/network/rtl8139.html\n"; + +#ifndef USE_MEM_OPS +/* Note: Register access width and timing restrictions apply in MMIO mode. + This updated driver should nominally work, but I/O mode is better tested. */ +#define USE_IO_OPS +#endif + +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; -/* A few user-configurable values. */ /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ -static int max_interrupt_work = 10; +static int max_interrupt_work = 20; + +/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). + The RTL chips use a 64 element hash table based on the Ethernet CRC. It + is efficient to update the hardware filter, but recalculating the table + for a long filter list is painful. */ +static int multicast_filter_limit = 32; -/* Size of the in-memory receive ring. */ +/* Used to pass the full-duplex flag, etc. */ +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; + +/* Operational parameters that are set at compile time. */ + +/* Maximum size of the in-memory receive ring (smaller if no memory). */ #define RX_BUF_LEN_IDX 2 /* 0==8K, 1==16K, 2==32K, 3==64K */ -#define RX_BUF_LEN (8192 << RX_BUF_LEN_IDX) /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */ #define TX_BUF_SIZE 1536 @@ -39,68 +67,86 @@ static int max_interrupt_work = 10; /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024. */ #define RX_FIFO_THRESH 4 /* Rx buffer level before first PCI xfer. */ #define RX_DMA_BURST 4 /* Maximum PCI burst, '4' is 256 bytes */ -#define TX_DMA_BURST 4 +#define TX_DMA_BURST 4 /* Calculate as 16<<val. */ /* Operational parameters that usually are not changed. */ /* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT ((4000*HZ)/1000) +#define TX_TIMEOUT (6*HZ) -#ifdef MODULE -#ifdef MODVERSIONS -#include <linux/modversions.h> +/* Allocation size of Rx buffers with full-sized Ethernet frames. + This is a cross-driver value that is not a limit, + but a way to keep a consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 + + +#ifndef __KERNEL__ +#define __KERNEL__ #endif -#include <linux/module.h> +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif + +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + #include <linux/version.h> -#else -#define MOD_INC_USE_COUNT -#define MOD_DEC_USE_COUNT +#if defined(MODVERSIONS) +#include <linux/modversions.h> #endif +#include <linux/module.h> #include <linux/kernel.h> -#include <linux/sched.h> #include <linux/string.h> #include <linux/timer.h> -#include <linux/ptrace.h> #include <linux/errno.h> #include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else #include <linux/malloc.h> +#endif #include <linux/interrupt.h> #include <linux/pci.h> -#include <linux/bios32.h> -#include <asm/processor.h> /* Processor type for cache alignment. */ -#include <asm/bitops.h> -#include <asm/io.h> -#include <asm/dma.h> - #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> +#include <asm/processor.h> /* Processor type for cache alignment. */ +#include <asm/bitops.h> +#include <asm/io.h> -#define RUN_AT(x) (jiffies + (x)) - -#include <linux/delay.h> - -#if (LINUX_VERSION_CODE < 0x20123) -#define test_and_set_bit(val, addr) set_bit(val, addr) +#if LINUX_VERSION_CODE >= 0x20300 +#include <linux/spinlock.h> +#elif LINUX_VERSION_CODE >= 0x20200 +#include <asm/spinlock.h> #endif -/* The I/O extent. */ -#define RTL8129_TOTAL_SIZE 0x80 - -#ifdef HAVE_DEVLIST -struct netdev_entry rtl8139_drv = -{"RTL8139", rtl8139_probe, RTL8129_TOTAL_SIZE, NULL}; +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" #endif -static int rtl8129_debug = 1; +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif /* Theory of Operation I. Board Compatibility -This device driver is designed for the RealTek RTL8129, the RealTek Fast -Ethernet controllers for PCI. This chip is used on a few clone boards. +This device driver is designed for the RealTek RTL8129 series, the RealTek +Fast Ethernet controllers for PCI and CardBus. This chip is used on many +low-end boards, sometimes with custom chip labels. II. Board-specific settings @@ -121,15 +167,17 @@ are sequentially stored into the Rx region, and the host copies them into skbuffs. Comment: While it is theoretically possible to process many frames in place, -any delay in Rx processing would cause us to drop frames. More importantly, -the Linux protocol stack is not designed to operate in this manner. +any delay in Rx processing would block the Rx ring and cause us to drop +frames. It would be difficult to design a protocol stack where the data +buffer could be recalled by the device driver. IIIb. Tx operation -The RTL8129 uses a fixed set of four Tx descriptors in register space. -In a stunningly bad design choice, Tx frames must be 32 bit aligned. Linux -aligns the IP header on word boundaries, and 14 byte ethernet header means -that almost all frames will need to be copied to an alignment buffer. +The RTL8129 uses a fixed set of four Tx descriptors in register space. Tx +frames must be 32 bit aligned. Linux aligns the IP header on word +boundaries, and 14 byte ethernet header means that almost all frames will +need to be copied to an alignment buffer. The driver statically allocates +alignment the four alignment buffers at open() time. IVb. References @@ -139,15 +187,74 @@ http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html IVc. Errata */ + -#ifndef PCI_VENDOR_ID_REALTEK -#define PCI_VENDOR_ID_REALTEK 0x10ec -#endif -#ifndef PCI_DEVICE_ID_REALTEK_8129 -#define PCI_DEVICE_ID_REALTEK_8129 0x8129 +static void *rtl8139_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +static int rtl_pwr_event(void *dev_instance, int event); + +enum chip_capability_flags {HAS_MII_XCVR=0x01, HAS_CHIP_XCVR=0x02, + HAS_LNK_CHNG=0x04, HAS_DESC=0x08}; +#ifdef USE_IO_OPS +#define RTL8139_IOTYPE PCI_USES_MASTER|PCI_USES_IO |PCI_ADDR0 +#else +#define RTL8139_IOTYPE PCI_USES_MASTER|PCI_USES_MEM|PCI_ADDR1 #endif -#ifndef PCI_DEVICE_ID_REALTEK_8139 -#define PCI_DEVICE_ID_REALTEK_8139 0x8139 +#define RTL8129_CAPS HAS_MII_XCVR +#define RTL8139_CAPS HAS_CHIP_XCVR|HAS_LNK_CHNG +#define RTL8139D_CAPS HAS_CHIP_XCVR|HAS_LNK_CHNG|HAS_DESC + +/* Note: Update the marked constant in _attach() if the RTL8139B entry moves.*/ +static struct pci_id_info pci_tbl[] = { + {"RealTek RTL8139C+, 64 bit high performance", + { 0x813910ec, 0xffffffff, 0,0, 0x20, 0xff}, + RTL8139_IOTYPE, 0x80, RTL8139D_CAPS, }, + {"RealTek RTL8139C Fast Ethernet", + { 0x813910ec, 0xffffffff, 0,0, 0x10, 0xff}, + RTL8139_IOTYPE, 0x80, RTL8139_CAPS, }, + {"RealTek RTL8129 Fast Ethernet", { 0x812910ec, 0xffffffff,}, + RTL8139_IOTYPE, 0x80, RTL8129_CAPS, }, + {"RealTek RTL8139 Fast Ethernet", { 0x813910ec, 0xffffffff,}, + RTL8139_IOTYPE, 0x80, RTL8139_CAPS, }, + {"RealTek RTL8139B PCI/CardBus", { 0x813810ec, 0xffffffff,}, + RTL8139_IOTYPE, 0x80, RTL8139_CAPS, }, + {"SMC1211TX EZCard 10/100 (RealTek RTL8139)", { 0x12111113, 0xffffffff,}, + RTL8139_IOTYPE, 0x80, RTL8139_CAPS, }, + {"Accton MPX5030 (RealTek RTL8139)", { 0x12111113, 0xffffffff,}, + RTL8139_IOTYPE, 0x80, RTL8139_CAPS, }, + {"D-Link DFE-530TX+ (RealTek RTL8139C)", + { 0x13001186, 0xffffffff, 0x13011186, 0xffffffff,}, + RTL8139_IOTYPE, 0x100, RTL8139_CAPS, }, + {"D-Link DFE-538TX (RealTek RTL8139)", { 0x13001186, 0xffffffff,}, + RTL8139_IOTYPE, 0x80, RTL8139_CAPS, }, + {"LevelOne FPC-0106Tx (RealTek RTL8139)", { 0x0106018a, 0xffffffff,}, + RTL8139_IOTYPE, 0x80, RTL8139_CAPS, }, + {"Compaq HNE-300 (RealTek RTL8139c)", { 0x8139021b, 0xffffffff,}, + RTL8139_IOTYPE, 0x80, RTL8139_CAPS, }, + {"Edimax EP-4103DL CardBus (RealTek RTL8139c)", { 0xab0613d1, 0xffffffff,}, + RTL8139_IOTYPE, 0x80, RTL8139_CAPS, }, + {"Siemens 1012v2 CardBus (RealTek RTL8139c)", { 0x101202ac, 0xffffffff,}, + RTL8139_IOTYPE, 0x80, RTL8139_CAPS, }, + {0,}, /* 0 terminated list. */ +}; + +struct drv_id_info rtl8139_drv_id = { + "realtek", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_tbl, + rtl8139_probe1, rtl_pwr_event }; + +#ifndef USE_IO_OPS +#undef inb +#undef inw +#undef inl +#undef outb +#undef outw +#undef outl +#define inb readb +#define inw readw +#define inl readl +#define outb writeb +#define outw writew +#define outl writel #endif /* The rest of these values should never change. */ @@ -157,7 +264,7 @@ IVc. Errata enum RTL8129_registers { MAC0=0, /* Ethernet hardware address. */ MAR0=8, /* Multicast filter. */ - TxStat0=0x10, /* Transmit status (Four 32bit registers). */ + TxStatus0=0x10, /* Transmit status (Four 32bit registers). */ TxAddr0=0x20, /* Tx descriptors (also four 32bit). */ RxBuf=0x30, RxEarlyCnt=0x34, RxEarlyStatus=0x36, ChipCmd=0x37, RxBufPtr=0x38, RxBufAddr=0x3A, @@ -168,9 +275,10 @@ enum RTL8129_registers { Cfg9346=0x50, Config0=0x51, Config1=0x52, FlashReg=0x54, GPPinData=0x58, GPPinDir=0x59, MII_SMI=0x5A, HltClk=0x5B, MultiIntr=0x5C, TxSummary=0x60, - BMCR=0x62, BMSR=0x64, NWayAdvert=0x66, NWayLPAR=0x68, NWayExpansion=0x6A, + MII_BMCR=0x62, MII_BMSR=0x64, NWayAdvert=0x66, NWayLPAR=0x68, + NWayExpansion=0x6A, /* Undocumented registers, but required for proper operation. */ - FIFOTMS=0x70, /* FIFO Test Mode Select */ + FIFOTMS=0x70, /* FIFO Control and test. */ CSCR=0x74, /* Chip Status and Configuration Register. */ PARA78=0x78, PARA7c=0x7c, /* Magic transceiver parameter register. */ }; @@ -194,281 +302,240 @@ enum RxStatusBits { RxBadAlign=0x0002, RxStatusOK=0x0001, }; +/* Twister tuning parameters from RealTek. + Completely undocumented, but required to tune bad links. */ enum CSCRBits { CSCR_LinkOKBit=0x0400, CSCR_LinkChangeBit=0x0800, CSCR_LinkStatusBits=0x0f000, CSCR_LinkDownOffCmd=0x003c0, CSCR_LinkDownCmd=0x0f3c0, -}; - -/* Twister tuning parameters from RealTek. Completely undocumented. */ +}; +#define PARA78_default 0x78fa8388 +#define PARA7c_default 0xcb38de43 /* param[0][3] */ +#define PARA7c_xxx 0xcb38de43 unsigned long param[4][4]={ - {0x0cb39de43,0x0cb39ce43,0x0fb38de03,0x0cb38de43}, - {0x0cb39de43,0x0cb39ce43,0x0cb39ce83,0x0cb39ce83}, - {0x0cb39de43,0x0cb39ce43,0x0cb39ce83,0x0cb39ce83}, - {0x0bb39de43,0x0bb39ce43,0x0bb39ce83,0x0bb39ce83} + {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43}, + {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83}, + {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83}, + {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83} }; +#define PRIV_ALIGN 15 /* Desired alignment mask */ struct rtl8129_private { - char devname[8]; /* Used only for kernel debugging. */ - const char *product_name; - struct device *next_module; - int chip_id; - int chip_revision; -#if LINUX_VERSION_CODE > 0x20139 + struct net_device *next_module; + void *priv_addr; /* Unaligned address for kfree */ + + int chip_id, drv_flags; + struct pci_dev *pci_dev; struct net_device_stats stats; -#else - struct enet_statistics stats; -#endif struct timer_list timer; /* Media selection timer. */ - unsigned int cur_rx, cur_tx; /* The next free and used entries */ - unsigned int dirty_rx, dirty_tx; + int msg_level; + int max_interrupt_work; + + /* Receive state. */ + unsigned char *rx_ring; + unsigned int cur_rx; /* Index into the Rx buffer of next Rx pkt. */ + unsigned int rx_buf_len; /* Size (8K 16K 32K or 64KB) of the Rx ring */ + + /* Transmit state. */ + unsigned int cur_tx, dirty_tx, tx_flag; + unsigned long tx_full; /* The Tx queue is full. */ /* The saved address of a sent-in-place packet/buffer, for skfree(). */ struct sk_buff* tx_skbuff[NUM_TX_DESC]; unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */ - unsigned char *rx_ring; unsigned char *tx_bufs; /* Tx bounce buffer region. */ - unsigned char mc_filter[8]; /* Current multicast filter. */ + + /* Receive filter state. */ + unsigned int rx_config; + u32 mc_filter[2]; /* Multicast hash filter */ + int cur_rx_mode; + int multicast_filter_limit; + + /* Transceiver state. */ char phys[4]; /* MII device addresses. */ - int in_interrupt; /* Alpha needs word-wide lock. */ - unsigned int tx_full:1; /* The Tx queue is full. */ + u16 advertising; /* NWay media advertisement */ + char twistie, twist_row, twist_col; /* Twister tune state. */ + u8 config1; unsigned int full_duplex:1; /* Full-duplex operation requested. */ - unsigned int default_port:4; /* Last dev->if_port value. */ + unsigned int duplex_lock:1; unsigned int media2:4; /* Secondary monitored media port. */ unsigned int medialock:1; /* Don't sense media type. */ unsigned int mediasense:1; /* Media sensing in progress. */ + unsigned int default_port; /* Last dev->if_port value. */ }; -#ifdef MODULE -/* Used to pass the full-duplex flag, etc. */ -static int options[] = {-1, -1, -1, -1, -1, -1, -1, -1}; -static int full_duplex[] = {-1, -1, -1, -1, -1, -1, -1, -1}; -#if LINUX_VERSION_CODE > 0x20118 -MODULE_AUTHOR("Donald Becker <becker@cesdis.gsfc.nasa.gov>"); +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); MODULE_DESCRIPTION("RealTek RTL8129/8139 Fast Ethernet driver"); -MODULE_PARM(debug, "i"); -MODULE_PARM(options, "1-" __MODULE_STRING(8) "i"); -MODULE_PARM(full_duplex, "1-" __MODULE_STRING(8) "i"); +MODULE_LICENSE("GPL"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(multicast_filter_limit, "i"); MODULE_PARM(max_interrupt_work, "i"); -#endif -#endif - -static struct device *rtl8129_probe1(struct device *dev, int ioaddr, int irq, - int chip_id, int options, int card_idx); -static int rtl8129_open(struct device *dev); -static int read_eeprom(int ioaddr, int location); -static int mdio_read(int ioaddr, int phy_id, int location); +MODULE_PARM(debug, "i"); +MODULE_PARM_DESC(debug, "Driver message level (0-31)"); +MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex"); +MODULE_PARM_DESC(full_duplex, "Non-zero to set forced full duplex."); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast addresses before switching to Rx-all-multicast"); +MODULE_PARM_DESC(max_interrupt_work, + "Driver maximum events handled per interrupt"); + +static int rtl8129_open(struct net_device *dev); +static void rtl_hw_start(struct net_device *dev); +static int read_eeprom(long ioaddr, int location, int addr_len); +static int mdio_read(struct net_device *dev, int phy_id, int location); +static void mdio_write(struct net_device *dev, int phy_id, int location, int val); static void rtl8129_timer(unsigned long data); -static void rtl8129_tx_timeout(struct device *dev); -static void rtl8129_init_ring(struct device *dev); -static int rtl8129_start_xmit(struct sk_buff *skb, struct device *dev); -static int rtl8129_rx(struct device *dev); +static void rtl8129_tx_timeout(struct net_device *dev); +static void rtl8129_init_ring(struct net_device *dev); +static int rtl8129_start_xmit(struct sk_buff *skb, struct net_device *dev); +static int rtl8129_rx(struct net_device *dev); static void rtl8129_interrupt(int irq, void *dev_instance, struct pt_regs *regs); -static int rtl8129_close(struct device *dev); -static struct enet_statistics *rtl8129_get_stats(struct device *dev); -static void set_rx_mode(struct device *dev); +static void rtl_error(struct net_device *dev, int status, int link_status); +static int rtl8129_close(struct net_device *dev); +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +static struct net_device_stats *rtl8129_get_stats(struct net_device *dev); +static inline u32 ether_crc(int length, unsigned char *data); +static void set_rx_mode(struct net_device *dev); -#ifdef MODULE /* A list of all installed RTL8129 devices, for removing the driver module. */ -static struct device *root_rtl8129_dev = NULL; -#endif +static struct net_device *root_rtl8129_dev = NULL; -int rtl8139_probe(struct device *dev) +#ifndef MODULE +int rtl8139_probe(struct net_device *dev) { - int cards_found = 0; - static int pci_index = 0; /* Static, for multiple probe calls. */ - - /* Ideally we would detect all network cards in slot order. That would - be best done a central PCI probe dispatch, which wouldn't work - well with the current structure. So instead we detect just the - Rtl81*9 cards in slot order. */ - - if (pcibios_present()) { - unsigned char pci_bus, pci_device_fn; - - for (;pci_index < 0xff; pci_index++) { - u8 pci_irq_line, pci_latency; - u16 pci_command, new_command, vendor, device; - u32 pci_ioaddr; - - if (pcibios_find_class (PCI_CLASS_NETWORK_ETHERNET << 8, -#ifdef REVERSE_PROBE_ORDER - 0xff - pci_index, -#else - pci_index, -#endif - &pci_bus, &pci_device_fn) - != PCIBIOS_SUCCESSFUL) - break; - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_VENDOR_ID, &vendor); - if (vendor != PCI_VENDOR_ID_REALTEK) - continue; - - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_DEVICE_ID, &device); - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_INTERRUPT_LINE, &pci_irq_line); - pcibios_read_config_dword(pci_bus, pci_device_fn, - PCI_BASE_ADDRESS_0, &pci_ioaddr); - /* Remove I/O space marker in bit 0. */ - pci_ioaddr &= ~3; - - if (device != PCI_DEVICE_ID_REALTEK_8129 - && device != PCI_DEVICE_ID_REALTEK_8139) { - printk(KERN_NOTICE "Unknown RealTek PCI ethernet chip type " - "%4.4x detected: not configured.\n", device); - continue; - } - if (check_region(pci_ioaddr, RTL8129_TOTAL_SIZE)) - continue; - - /* Activate the card: fix for brain-damaged Win98 BIOSes. */ - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, &pci_command); - new_command = pci_command | PCI_COMMAND_MASTER|PCI_COMMAND_IO; - if (pci_command != new_command) { - printk(KERN_INFO " The PCI BIOS has not enabled this" - " device! Updating PCI config %4.4x->%4.4x.\n", - pci_command, new_command); - pcibios_write_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, new_command); - } - -#ifdef MODULE - dev = rtl8129_probe1(dev, pci_ioaddr, pci_irq_line, device, - options[cards_found], cards_found); -#else - dev = rtl8129_probe1(dev, pci_ioaddr, pci_irq_line, device, - dev ? dev->mem_start : 0, -1); -#endif - - if (dev) { - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, &pci_latency); - if (pci_latency < 32) { - printk(KERN_NOTICE" PCI latency timer (CFLT) is " - "unreasonably low at %d. Setting to 64 clocks.\n", - pci_latency); - pcibios_write_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, 64); - } else if (rtl8129_debug > 1) - printk(KERN_INFO" PCI latency timer (CFLT) is %#x.\n", - pci_latency); - dev = 0; - cards_found++; - } - } - } + static int did_version = 0; /* Already printed version info. */ -#if defined (MODULE) - return cards_found; -#else - return cards_found ? 0 : -ENODEV; -#endif + if (debug >= NETIF_MSG_DRV /* Emit version even if no cards detected. */ + && did_version++ == 0) + printk(KERN_INFO "%s" KERN_INFO "%s", versionA, versionB); + return pci_drv_register(&rtl8139_drv_id, dev); } +#endif -static struct device *rtl8129_probe1(struct device *dev, int ioaddr, int irq, - int chip_id, int options, int card_idx) +static void *rtl8139_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int found_cnt) { - static int did_version = 0; /* Already printed version info. */ - struct rtl8129_private *tp; - int i; + struct net_device *dev; + struct rtl8129_private *np; + void *priv_mem; + int i, option = found_cnt < MAX_UNITS ? options[found_cnt] : 0; + int config1; - if (rtl8129_debug > 0 && did_version++ == 0) - printk(KERN_INFO "%s", version); + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; - dev = init_etherdev(dev, 0); - - printk(KERN_INFO "%s: RealTek RTL%x at %#3x, IRQ %d, ", - dev->name, chip_id, ioaddr, irq); + printk(KERN_INFO "%s: %s at %#lx, IRQ %d, ", + dev->name, pci_tbl[chip_idx].name, ioaddr, irq); /* Bring the chip out of low-power mode. */ - outb(0x00, ioaddr + Config1); - - /* Perhaps this should be read from the EEPROM? */ - for (i = 0; i < 6; i++) - dev->dev_addr[i] = inb(ioaddr + MAC0 + i); + config1 = inb(ioaddr + Config1); + if (pci_tbl[chip_idx].drv_flags & HAS_MII_XCVR) /* rtl8129 chip */ + outb(config1 & ~0x03, ioaddr + Config1); + + { + int addr_len = read_eeprom(ioaddr, 0, 8) == 0x8129 ? 8 : 6; + for (i = 0; i < 3; i++) + ((u16 *)(dev->dev_addr))[i] = + le16_to_cpu(read_eeprom(ioaddr, i+7, addr_len)); + } for (i = 0; i < 5; i++) printk("%2.2x:", dev->dev_addr[i]); printk("%2.2x.\n", dev->dev_addr[i]); - if (rtl8129_debug > 1) { - printk(KERN_INFO "%s: EEPROM contents\n", dev->name); - for (i = 0; i < 64; i++) - printk(" %4.4x%s", read_eeprom(ioaddr, i), - i%16 == 15 ? "\n"KERN_INFO : ""); - } + /* Make certain elements e.g. descriptor lists are aligned. */ + priv_mem = kmalloc(sizeof(*np) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; /* We do a request_region() to register /proc/ioports info. */ - request_region(ioaddr, RTL8129_TOTAL_SIZE, "RealTek RTL8129/39 Fast Ethernet"); + request_region(ioaddr, pci_tbl[chip_idx].io_size, dev->name); dev->base_addr = ioaddr; dev->irq = irq; - /* Some data structures must be quadword aligned. */ - tp = kmalloc(sizeof(*tp), GFP_KERNEL | GFP_DMA); - memset(tp, 0, sizeof(*tp)); - dev->priv = tp; + dev->priv = np = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); + memset(np, 0, sizeof(*np)); + np->priv_addr = priv_mem; -#ifdef MODULE - tp->next_module = root_rtl8129_dev; + np->next_module = root_rtl8129_dev; root_rtl8129_dev = dev; -#endif - tp->chip_id = chip_id; + np->pci_dev = pdev; + np->chip_id = chip_idx; + np->drv_flags = pci_tbl[chip_idx].drv_flags; + np->msg_level = (1 << debug) - 1; + np->max_interrupt_work = max_interrupt_work; + np->multicast_filter_limit = multicast_filter_limit; + + np->config1 = config1; /* Find the connected MII xcvrs. Doing this in open() would allow detecting external xcvrs later, but takes too much time. */ - if (chip_id == 0x8129) { - int phy, phy_idx; - for (phy = 0, phy_idx = 0; phy < 32 && phy_idx < sizeof(tp->phys); - phy++) { - int mii_status = mdio_read(ioaddr, phy, 1); - - if (mii_status != 0xffff && mii_status != 0x0000) { - tp->phys[phy_idx++] = phy; - printk(KERN_INFO "%s: MII transceiver found at address %d.\n", - dev->name, phy); + if (np->drv_flags & HAS_MII_XCVR) { + int phy, phy_idx = 0; + for (phy = 0; phy < 32 && phy_idx < sizeof(np->phys); phy++) { + int mii_status = mdio_read(dev, phy, 1); + if (mii_status != 0xffff && mii_status != 0x0000) { + np->phys[phy_idx++] = phy; + np->advertising = mdio_read(dev, phy, 4); + printk(KERN_INFO "%s: MII transceiver %d status 0x%4.4x " + "advertising %4.4x.\n", + dev->name, phy, mii_status, np->advertising); } } if (phy_idx == 0) { printk(KERN_INFO "%s: No MII transceivers found! Assuming SYM " "transceiver.\n", dev->name); - tp->phys[0] = -1; + np->phys[0] = 32; } - } else { - tp->phys[0] = -1; - } + } else + np->phys[0] = 32; /* Put the chip into low-power mode. */ outb(0xC0, ioaddr + Cfg9346); - outb(0x03, ioaddr + Config1); + if (np->drv_flags & HAS_MII_XCVR) /* rtl8129 chip */ + outb(0x03, ioaddr + Config1); + outb('H', ioaddr + HltClk); /* 'R' would leave the clock running. */ /* The lower four bits are the media type. */ - if (options > 0) { - tp->full_duplex = (options & 16) ? 1 : 0; - tp->default_port = options & 15; - if (tp->default_port) - tp->medialock = 1; + if (option > 0) { + np->full_duplex = (option & 0x220) ? 1 : 0; + np->default_port = option & 0x330; + if (np->default_port) + np->medialock = 1; } -#ifdef MODULE - if (card_idx >= 0) { - if (full_duplex[card_idx] >= 0) - tp->full_duplex = full_duplex[card_idx]; + + if (found_cnt < MAX_UNITS && full_duplex[found_cnt] > 0) + np->full_duplex = full_duplex[found_cnt]; + + if (np->full_duplex) { + printk(KERN_INFO "%s: Media type forced to Full Duplex.\n", dev->name); + /* Changing the MII-advertised media might prevent re-connection. */ + np->duplex_lock = 1; + } + if (np->default_port) { + printk(KERN_INFO " Forcing %dMbs %s-duplex operation.\n", + (option & 0x300 ? 100 : 10), + (option & 0x220 ? "full" : "half")); + mdio_write(dev, np->phys[0], 0, + ((option & 0x300) ? 0x2000 : 0) | /* 100mbps? */ + ((option & 0x220) ? 0x0100 : 0)); /* Full duplex? */ } -#endif - /* The Rtl8129-specific entries in the device structure. */ + /* The rtl81x9-specific entries in the device structure. */ dev->open = &rtl8129_open; dev->hard_start_xmit = &rtl8129_start_xmit; dev->stop = &rtl8129_close; dev->get_stats = &rtl8129_get_stats; dev->set_multicast_list = &set_rx_mode; + dev->do_ioctl = &mii_ioctl; return dev; } @@ -485,48 +552,43 @@ static struct device *rtl8129_probe1(struct device *dev, int ioaddr, int irq, #define EE_ENB (0x80 | EE_CS) /* Delay between EEPROM clock transitions. - No extra delay is needed with 33Mhz PCI, but 66Mhz is untested. + No extra delay is needed with 33Mhz PCI, but 66Mhz may change this. */ -#ifdef _LINUX_DELAY_H -#define eeprom_delay(nanosec) udelay(1) -#else -#define eeprom_delay(nanosec) do { ; } while (0) -#endif +#define eeprom_delay() inl(ee_addr) /* The EEPROM commands include the alway-set leading bit. */ -#define EE_WRITE_CMD (5 << 6) -#define EE_READ_CMD (6 << 6) -#define EE_ERASE_CMD (7 << 6) +#define EE_WRITE_CMD (5) +#define EE_READ_CMD (6) +#define EE_ERASE_CMD (7) -static int read_eeprom(int ioaddr, int location) +static int read_eeprom(long ioaddr, int location, int addr_len) { int i; unsigned retval = 0; - int ee_addr = ioaddr + Cfg9346; - int read_cmd = location | EE_READ_CMD; + long ee_addr = ioaddr + Cfg9346; + int read_cmd = location | (EE_READ_CMD << addr_len); outb(EE_ENB & ~EE_CS, ee_addr); outb(EE_ENB, ee_addr); /* Shift the read command bits out. */ - for (i = 10; i >= 0; i--) { + for (i = 4 + addr_len; i >= 0; i--) { int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0; outb(EE_ENB | dataval, ee_addr); - eeprom_delay(100); + eeprom_delay(); outb(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr); - eeprom_delay(150); - outb(EE_ENB | dataval, ee_addr); /* Finish EEPROM a clock tick. */ - eeprom_delay(250); + eeprom_delay(); } outb(EE_ENB, ee_addr); + eeprom_delay(); for (i = 16; i > 0; i--) { outb(EE_ENB | EE_SHIFT_CLK, ee_addr); - eeprom_delay(100); + eeprom_delay(); retval = (retval << 1) | ((inb(ee_addr) & EE_DATA_READ) ? 1 : 0); outb(EE_ENB, ee_addr); - eeprom_delay(100); + eeprom_delay(); } /* Terminate the EEPROM access. */ @@ -544,288 +606,402 @@ static int read_eeprom(int ioaddr, int location) #define MDIO_DATA_OUT 0x04 #define MDIO_DATA_IN 0x02 #define MDIO_CLK 0x01 -#ifdef _LINUX_DELAY_H -#define mdio_delay() udelay(1) /* Really 400ns. */ -#else -#define mdio_delay() do { ; } while (0) -#endif +#define MDIO_WRITE0 (MDIO_DIR) +#define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT) + +#define mdio_delay(mdio_addr) inb(mdio_addr) + +static char mii_2_8139_map[8] = {MII_BMCR, MII_BMSR, 0, 0, NWayAdvert, + NWayLPAR, NWayExpansion, 0 }; /* Syncronize the MII management interface by shifting 32 one bits out. */ -static void mdio_sync(int ioaddr) +static void mdio_sync(long mdio_addr) { int i; - int mdio_addr = ioaddr + MII_SMI; for (i = 32; i >= 0; i--) { - outb(MDIO_DIR | MDIO_DATA_OUT, mdio_addr); - mdio_delay(); - outb(MDIO_DIR | MDIO_DATA_OUT | MDIO_CLK, mdio_addr); - mdio_delay(); + outb(MDIO_WRITE1, mdio_addr); + mdio_delay(mdio_addr); + outb(MDIO_WRITE1 | MDIO_CLK, mdio_addr); + mdio_delay(mdio_addr); } return; } -static int mdio_read(int ioaddr, int phy_id, int location) +static int mdio_read(struct net_device *dev, int phy_id, int location) { - int i; - int read_cmd = (0xf6 << 10) | (phy_id << 5) | location; + long mdio_addr = dev->base_addr + MII_SMI; + int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location; int retval = 0; - int mdio_addr = ioaddr + MII_SMI; + int i; - mdio_sync(ioaddr); + if (phy_id > 31) { /* Really a 8139. Use internal registers. */ + return location < 8 && mii_2_8139_map[location] ? + inw(dev->base_addr + mii_2_8139_map[location]) : 0; + } + mdio_sync(mdio_addr); /* Shift the read command bits out. */ for (i = 15; i >= 0; i--) { - int dataval = - (read_cmd & (1 << i)) ? MDIO_DATA_OUT : 0; + int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0; outb(MDIO_DIR | dataval, mdio_addr); - mdio_delay(); + mdio_delay(mdio_addr); outb(MDIO_DIR | dataval | MDIO_CLK, mdio_addr); - mdio_delay(); + mdio_delay(mdio_addr); } /* Read the two transition, 16 data, and wire-idle bits. */ for (i = 19; i > 0; i--) { outb(0, mdio_addr); - mdio_delay(); + mdio_delay(mdio_addr); retval = (retval << 1) | ((inb(mdio_addr) & MDIO_DATA_IN) ? 1 : 0); outb(MDIO_CLK, mdio_addr); - mdio_delay(); + mdio_delay(mdio_addr); } return (retval>>1) & 0xffff; } - -static int -rtl8129_open(struct device *dev) + +static void mdio_write(struct net_device *dev, int phy_id, int location, + int value) { - struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv; - int ioaddr = dev->base_addr; + long mdio_addr = dev->base_addr + MII_SMI; + int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value; int i; - int full_duplex = 0; - /* Soft reset the chip. */ - outb(CmdReset, ioaddr + ChipCmd); + if (phy_id > 31) { /* Really a 8139. Use internal registers. */ + long ioaddr = dev->base_addr; + if (location == 0) { + outb(0xC0, ioaddr + Cfg9346); + outw(value, ioaddr + MII_BMCR); + outb(0x00, ioaddr + Cfg9346); + } else if (location < 8 && mii_2_8139_map[location]) + outw(value, ioaddr + mii_2_8139_map[location]); + return; + } + mdio_sync(mdio_addr); + + /* Shift the command bits out. */ + for (i = 31; i >= 0; i--) { + int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; + outb(dataval, mdio_addr); + mdio_delay(mdio_addr); + outb(dataval | MDIO_CLK, mdio_addr); + mdio_delay(mdio_addr); + } + /* Clear out extra bits. */ + for (i = 2; i > 0; i--) { + outb(0, mdio_addr); + mdio_delay(mdio_addr); + outb(MDIO_CLK, mdio_addr); + mdio_delay(mdio_addr); + } + return; +} + + +static int rtl8129_open(struct net_device *dev) +{ + struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv; + long ioaddr = dev->base_addr; + int rx_buf_len_idx; + MOD_INC_USE_COUNT; if (request_irq(dev->irq, &rtl8129_interrupt, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; return -EAGAIN; } - MOD_INC_USE_COUNT; + /* The Rx ring allocation size is 2^N + delta, which is worst-case for + the kernel binary-buddy allocation. We allocate the Tx bounce buffers + at the same time to use some of the otherwise wasted space. + The delta of +16 is required for dribble-over because the receiver does + not wrap when the packet terminates just beyond the end of the ring. */ + rx_buf_len_idx = RX_BUF_LEN_IDX; + do { + tp->rx_buf_len = 8192 << rx_buf_len_idx; + tp->rx_ring = kmalloc(tp->rx_buf_len + 16 + + (TX_BUF_SIZE * NUM_TX_DESC), GFP_KERNEL); + } while (tp->rx_ring == NULL && --rx_buf_len_idx >= 0); - tp->tx_bufs = kmalloc(TX_BUF_SIZE * NUM_TX_DESC, GFP_KERNEL); - tp->rx_ring = kmalloc(RX_BUF_LEN + 16, GFP_KERNEL); - if (tp->tx_bufs == NULL || tp->rx_ring == NULL) { - free_irq (dev->irq, dev); - if (tp->tx_bufs) - kfree(tp->tx_bufs); - if (rtl8129_debug > 0) + if (tp->rx_ring == NULL) { + if (debug > 0) printk(KERN_ERR "%s: Couldn't allocate a %d byte receive ring.\n", - dev->name, RX_BUF_LEN); + dev->name, tp->rx_buf_len); + MOD_DEC_USE_COUNT; return -ENOMEM; } + tp->tx_bufs = tp->rx_ring + tp->rx_buf_len + 16; + rtl8129_init_ring(dev); + tp->full_duplex = tp->duplex_lock; + tp->tx_flag = (TX_FIFO_THRESH<<11) & 0x003f0000; + tp->rx_config = + (RX_FIFO_THRESH << 13) | (rx_buf_len_idx << 11) | (RX_DMA_BURST<<8); + + rtl_hw_start(dev); + netif_start_tx_queue(dev); + + if (tp->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG"%s: rtl8129_open() ioaddr %#lx IRQ %d" + " GP Pins %2.2x %s-duplex.\n", + dev->name, ioaddr, dev->irq, inb(ioaddr + GPPinData), + tp->full_duplex ? "full" : "half"); + + /* Set the timer to switch to check for link beat and perhaps switch + to an alternate media type. */ + init_timer(&tp->timer); + tp->timer.expires = jiffies + 3*HZ; + tp->timer.data = (unsigned long)dev; + tp->timer.function = &rtl8129_timer; + add_timer(&tp->timer); + + return 0; +} +/* Start the hardware at open or resume. */ +static void rtl_hw_start(struct net_device *dev) +{ + struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv; + long ioaddr = dev->base_addr; + int i; + + /* Soft reset the chip. */ + outb(CmdReset, ioaddr + ChipCmd); /* Check that the chip has finished the reset. */ for (i = 1000; i > 0; i--) if ((inb(ioaddr + ChipCmd) & CmdReset) == 0) break; + /* Restore our idea of the MAC address. */ + outb(0xC0, ioaddr + Cfg9346); + outl(cpu_to_le32(*(u32*)(dev->dev_addr + 0)), ioaddr + MAC0 + 0); + outl(cpu_to_le32(*(u32*)(dev->dev_addr + 4)), ioaddr + MAC0 + 4); - for (i = 0; i < 6; i++) - outb(dev->dev_addr[i], ioaddr + MAC0 + i); + /* Hmmm, do these belong here? */ + tp->cur_rx = 0; /* Must enable Tx/Rx before setting transfer thresholds! */ outb(CmdRxEnb | CmdTxEnb, ioaddr + ChipCmd); - outl((RX_FIFO_THRESH << 13) | (RX_BUF_LEN_IDX << 11) | (RX_DMA_BURST<<8), - ioaddr + RxConfig); - outl((TX_DMA_BURST<<8)|0x03000000, ioaddr + TxConfig); - - full_duplex = tp->full_duplex; - if (tp->phys[0] >= 0 || tp->chip_id == 0x8139) { - u16 mii_reg5; - if (tp->chip_id == 0x8139) - mii_reg5 = inw(ioaddr + NWayLPAR); - else - mii_reg5 = mdio_read(ioaddr, tp->phys[0], 5); + outl(tp->rx_config, ioaddr + RxConfig); + /* Check this value: the documentation contradicts ifself. Is the + IFG correct with bit 28:27 zero, or with |0x03000000 ? */ + outl((TX_DMA_BURST<<8), ioaddr + TxConfig); + + /* This is check_duplex() */ + if (tp->phys[0] >= 0 || (tp->drv_flags & HAS_MII_XCVR)) { + u16 mii_reg5 = mdio_read(dev, tp->phys[0], 5); if (mii_reg5 == 0xffff) ; /* Not there */ else if ((mii_reg5 & 0x0100) == 0x0100 || (mii_reg5 & 0x00C0) == 0x0040) - full_duplex = 1; - if (rtl8129_debug > 1) + tp->full_duplex = 1; + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_INFO"%s: Setting %s%s-duplex based on" " auto-negotiated partner ability %4.4x.\n", dev->name, mii_reg5 == 0 ? "" : (mii_reg5 & 0x0180) ? "100mbps " : "10mbps ", - full_duplex ? "full" : "half", mii_reg5); + tp->full_duplex ? "full" : "half", mii_reg5); } - outb(0xC0, ioaddr + Cfg9346); - outb(full_duplex ? 0x60 : 0x20, ioaddr + Config1); + if (tp->drv_flags & HAS_MII_XCVR) /* rtl8129 chip */ + outb(tp->full_duplex ? 0x60 : 0x20, ioaddr + Config1); outb(0x00, ioaddr + Cfg9346); outl(virt_to_bus(tp->rx_ring), ioaddr + RxBuf); - /* Start the chip's Tx and Rx process. */ outl(0, ioaddr + RxMissed); set_rx_mode(dev); - outb(CmdRxEnb | CmdTxEnb, ioaddr + ChipCmd); - - dev->tbusy = 0; - dev->interrupt = 0; - dev->start = 1; - /* Enable all known interrupts by setting the interrupt mask. */ outw(PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver - | TxErr | TxOK | RxErr | RxOK, ioaddr + IntrMask); - - if (rtl8129_debug > 1) - printk(KERN_DEBUG"%s: rtl8129_open() ioaddr %4.4x IRQ %d" - " GP Pins %2.2x %s-duplex.\n", - dev->name, ioaddr, dev->irq, inb(ioaddr + GPPinData), - full_duplex ? "full" : "half"); - - /* Set the timer to switch to check for link beat and perhaps switch - to an alternate media type. */ - init_timer(&tp->timer); - tp->timer.expires = RUN_AT((24*HZ)/10); /* 2.4 sec. */ - tp->timer.data = (unsigned long)dev; - tp->timer.function = &rtl8129_timer; /* timer handler */ - add_timer(&tp->timer); + | TxErr | TxOK | RxErr | RxOK, ioaddr + IntrMask); - return 0; } static void rtl8129_timer(unsigned long data) { - struct device *dev = (struct device *)data; - struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv; - int ioaddr = dev->base_addr; - int next_tick = 0; - - if (tp->chip_id == 0x8139) { - u16 mii_reg5 = inw(ioaddr + NWayLPAR); - if ((mii_reg5 & 0x0100) == 0x0100 - || (mii_reg5 & 0x00C0) == 0x0040) - if ( ! tp->full_duplex) { - tp->full_duplex = 1; - if (rtl8129_debug > 0) - printk(KERN_INFO "%s: Switching to full-duplex based on " - "link partner ability of %4.4x.\n", - dev->name, mii_reg5); + struct net_device *dev = (struct net_device *)data; + struct rtl8129_private *np = (struct rtl8129_private *)dev->priv; + long ioaddr = dev->base_addr; + int next_tick = 60*HZ; + int mii_reg5 = mdio_read(dev, np->phys[0], 5); + + if (! np->duplex_lock && mii_reg5 != 0xffff) { + int duplex = (mii_reg5&0x0100) || (mii_reg5 & 0x01C0) == 0x0040; + if (np->full_duplex != duplex) { + np->full_duplex = duplex; + printk(KERN_INFO "%s: Using %s-duplex based on MII #%d link" + " partner ability of %4.4x.\n", dev->name, + np->full_duplex ? "full" : "half", np->phys[0], mii_reg5); + if (np->drv_flags & HAS_MII_XCVR) { outb(0xC0, ioaddr + Cfg9346); - outb(tp->full_duplex ? 0x60 : 0x20, ioaddr + Config1); + outb(np->full_duplex ? 0x60 : 0x20, ioaddr + Config1); outb(0x00, ioaddr + Cfg9346); } + } + } +#if LINUX_VERSION_CODE < 0x20300 + /* Check for bogusness. */ + if (inw(ioaddr + IntrStatus) & (TxOK | RxOK)) { + int status = inw(ioaddr + IntrStatus); /* Double check */ + if (status & (TxOK | RxOK) && ! dev->interrupt) { + printk(KERN_ERR "%s: RTL8139 Interrupt line blocked, status %x.\n", + dev->name, status); + rtl8129_interrupt(dev->irq, dev, 0); + } + } + if (dev->tbusy && jiffies - dev->trans_start >= 2*TX_TIMEOUT) + rtl8129_tx_timeout(dev); +#else + if (netif_queue_paused(dev) && + np->cur_tx - np->dirty_tx > 1 && + (jiffies - dev->trans_start) > TX_TIMEOUT) { + rtl8129_tx_timeout(dev); } - if (rtl8129_debug > 2) { - if (tp->chip_id == 0x8129) +#endif + +#if defined(RTL_TUNE_TWISTER) + /* This is a complicated state machine to configure the "twister" for + impedance/echos based on the cable length. + All of this is magic and undocumented. + */ + if (np->twistie) switch(np->twistie) { + case 1: { + if (inw(ioaddr + CSCR) & CSCR_LinkOKBit) { + /* We have link beat, let us tune the twister. */ + outw(CSCR_LinkDownOffCmd, ioaddr + CSCR); + np->twistie = 2; /* Change to state 2. */ + next_tick = HZ/10; + } else { + /* Just put in some reasonable defaults for when beat returns. */ + outw(CSCR_LinkDownCmd, ioaddr + CSCR); + outl(0x20,ioaddr + FIFOTMS); /* Turn on cable test mode. */ + outl(PARA78_default ,ioaddr + PARA78); + outl(PARA7c_default ,ioaddr + PARA7c); + np->twistie = 0; /* Bail from future actions. */ + } + } break; + case 2: { + /* Read how long it took to hear the echo. */ + int linkcase = inw(ioaddr + CSCR) & CSCR_LinkStatusBits; + if (linkcase == 0x7000) np->twist_row = 3; + else if (linkcase == 0x3000) np->twist_row = 2; + else if (linkcase == 0x1000) np->twist_row = 1; + else np->twist_row = 0; + np->twist_col = 0; + np->twistie = 3; /* Change to state 2. */ + next_tick = HZ/10; + } break; + case 3: { + /* Put out four tuning parameters, one per 100msec. */ + if (np->twist_col == 0) outw(0, ioaddr + FIFOTMS); + outl(param[(int)np->twist_row][(int)np->twist_col], ioaddr + PARA7c); + next_tick = HZ/10; + if (++np->twist_col >= 4) { + /* For short cables we are done. + For long cables (row == 3) check for mistune. */ + np->twistie = (np->twist_row == 3) ? 4 : 0; + } + } break; + case 4: { + /* Special case for long cables: check for mistune. */ + if ((inw(ioaddr + CSCR) & CSCR_LinkStatusBits) == 0x7000) { + np->twistie = 0; + break; + } else { + outl(0xfb38de03, ioaddr + PARA7c); + np->twistie = 5; + next_tick = HZ/10; + } + } break; + case 5: { + /* Retune for shorter cable (column 2). */ + outl(0x20,ioaddr + FIFOTMS); + outl(PARA78_default, ioaddr + PARA78); + outl(PARA7c_default, ioaddr + PARA7c); + outl(0x00,ioaddr + FIFOTMS); + np->twist_row = 2; + np->twist_col = 0; + np->twistie = 3; + next_tick = HZ/10; + } break; + } +#endif + + if (np->msg_level & NETIF_MSG_TIMER) { + if (np->drv_flags & HAS_MII_XCVR) printk(KERN_DEBUG"%s: Media selection tick, GP pins %2.2x.\n", dev->name, inb(ioaddr + GPPinData)); else printk(KERN_DEBUG"%s: Media selection tick, Link partner %4.4x.\n", dev->name, inw(ioaddr + NWayLPAR)); - printk(KERN_DEBUG"%s: Other registers are IntMask %4.4x IntStatus %4.4x" - " RxStatus %4.4x.\n", + printk(KERN_DEBUG"%s: Other registers are IntMask %4.4x " + "IntStatus %4.4x RxStatus %4.4x.\n", dev->name, inw(ioaddr + IntrMask), inw(ioaddr + IntrStatus), - inl(ioaddr + RxEarlyStatus)); + (int)inl(ioaddr + RxEarlyStatus)); printk(KERN_DEBUG"%s: Chip config %2.2x %2.2x.\n", dev->name, inb(ioaddr + Config0), inb(ioaddr + Config1)); } - if (next_tick) { - tp->timer.expires = RUN_AT(next_tick); - add_timer(&tp->timer); - } + np->timer.expires = jiffies + next_tick; + add_timer(&np->timer); } -static void rtl8129_tx_timeout(struct device *dev) +static void rtl8129_tx_timeout(struct net_device *dev) { struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv; - int ioaddr = dev->base_addr; - int i; + long ioaddr = dev->base_addr; + int status = inw(ioaddr + IntrStatus); + int mii_reg, i; + + /* Could be wrapped with if (tp->msg_level & NETIF_MSG_TX_ERR) */ + printk(KERN_ERR "%s: Transmit timeout, status %2.2x %4.4x " + "media %2.2x.\n", + dev->name, inb(ioaddr + ChipCmd), status, inb(ioaddr + GPPinData)); + + if (status & (TxOK | RxOK)) { + printk(KERN_ERR "%s: RTL8139 Interrupt line blocked, status %x.\n", + dev->name, status); + } /* Disable interrupts by clearing the interrupt mask. */ outw(0x0000, ioaddr + IntrMask); - - if (rtl8129_debug > 0) - printk(KERN_WARNING "%s: Transmit timeout, status %2.2x %4.4x.\n", - dev->name, inb(ioaddr + ChipCmd), inw(ioaddr + IntrStatus)); /* Emit info to figure out what went wrong. */ + printk(KERN_DEBUG "%s: Tx queue start entry %d dirty entry %d%s.\n", + dev->name, tp->cur_tx, tp->dirty_tx, tp->tx_full ? ", full" : ""); for (i = 0; i < NUM_TX_DESC; i++) - printk(KERN_DEBUG"%s: Tx descriptor %d is %8.8x.%s\n", - dev->name, i, inl(ioaddr + TxStat0 + i*4), + printk(KERN_DEBUG "%s: Tx descriptor %d is %8.8x.%s\n", + dev->name, i, (int)inl(ioaddr + TxStatus0 + i*4), i == tp->dirty_tx % NUM_TX_DESC ? " (queue head)" : ""); - if (tp->chip_id == 0x8129) { - int mii_reg; - printk(KERN_DEBUG"%s: MII #%d registers are:", dev->name, tp->phys[0]); - for (mii_reg = 0; mii_reg < 8; mii_reg++) - printk(" %4.4x", mdio_read(ioaddr, tp->phys[0], mii_reg)); - printk(".\n"); - } else { - printk(KERN_DEBUG"%s: MII status register is %4.4x.\n", - dev->name, inw(ioaddr + BMSR)); - } - - /* Soft reset the chip. */ - outb(CmdReset, ioaddr + ChipCmd); - for (i = 0; i < 6; i++) - outb(dev->dev_addr[i], ioaddr + MAC0 + i); - - { /* Save the unsent Tx packets. */ - struct sk_buff *saved_skb[NUM_TX_DESC], *skb; - int j = 0; - for (; tp->cur_tx - tp->dirty_tx > 0 ; tp->dirty_tx++) - saved_skb[j++] = tp->tx_skbuff[tp->dirty_tx % NUM_TX_DESC]; - tp->dirty_tx = tp->cur_tx = 0; - - for (i = 0; i < j; i++) { - skb = tp->tx_skbuff[i] = saved_skb[i]; - if ((long)skb->data & 3) { /* Must use alignment buffer. */ - memcpy(tp->tx_buf[i], skb->data, skb->len); - outl(virt_to_bus(tp->tx_buf[i]), ioaddr + TxAddr0 + i*4); - } else - outl(virt_to_bus(skb->data), ioaddr + TxAddr0 + i*4); - /* Note: the chip doesn't have auto-pad! */ - outl(((TX_FIFO_THRESH<<11) & 0x003f0000) | - (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN), - ioaddr + TxStat0 + i*4); - } - tp->cur_tx = i; - while (i < NUM_TX_DESC) + printk(KERN_DEBUG "%s: MII #%d registers are:", dev->name, tp->phys[0]); + for (mii_reg = 0; mii_reg < 8; mii_reg++) + printk(" %4.4x", mdio_read(dev, tp->phys[0], mii_reg)); + printk(".\n"); + + /* Stop a shared interrupt from scavenging while we are. */ + tp->dirty_tx = tp->cur_tx = 0; + /* Dump the unsent Tx packets. */ + for (i = 0; i < NUM_TX_DESC; i++) { + if (tp->tx_skbuff[i]) { + dev_free_skb(tp->tx_skbuff[i]); tp->tx_skbuff[i] = 0; - if (tp->cur_tx - tp->dirty_tx < NUM_TX_DESC) {/* Typical path */ - dev->tbusy = 0; - } else { - tp->tx_full = 1; + tp->stats.tx_dropped++; } } - - /* Must enable Tx/Rx before setting transfer thresholds! */ - set_rx_mode(dev); - outb(CmdRxEnb | CmdTxEnb, ioaddr + ChipCmd); - outl((RX_FIFO_THRESH << 13) | (RX_BUF_LEN_IDX << 11) | (RX_DMA_BURST<<8), - ioaddr + RxConfig); - outl((TX_DMA_BURST<<8), ioaddr + TxConfig); - - dev->trans_start = jiffies; - tp->stats.tx_errors++; - /* Enable all known interrupts by setting the interrupt mask. */ - outw(PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver - | TxErr | TxOK | RxErr | RxOK, ioaddr + IntrMask); + rtl_hw_start(dev); + netif_unpause_tx_queue(dev); + tp->tx_full = 0; return; } /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ static void -rtl8129_init_ring(struct device *dev) +rtl8129_init_ring(struct net_device *dev) { struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv; int i; tp->tx_full = 0; - tp->cur_rx = tp->cur_tx = 0; - tp->dirty_rx = tp->dirty_tx = 0; + tp->dirty_tx = tp->cur_tx = 0; for (i = 0; i < NUM_TX_DESC; i++) { tp->tx_skbuff[i] = 0; @@ -834,18 +1010,16 @@ rtl8129_init_ring(struct device *dev) } static int -rtl8129_start_xmit(struct sk_buff *skb, struct device *dev) +rtl8129_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv; - int ioaddr = dev->base_addr; + long ioaddr = dev->base_addr; int entry; - /* Block a timer-based transmit from overlapping. This could better be - done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */ - if (test_and_set_bit(0, (void*)&dev->tbusy) != 0) { - if (jiffies - dev->trans_start < TX_TIMEOUT) - return 1; - rtl8129_tx_timeout(dev); + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + rtl8129_tx_timeout(dev); return 1; } @@ -859,20 +1033,26 @@ rtl8129_start_xmit(struct sk_buff *skb, struct device *dev) } else outl(virt_to_bus(skb->data), ioaddr + TxAddr0 + entry*4); /* Note: the chip doesn't have auto-pad! */ - outl(((TX_FIFO_THRESH<<11) & 0x003f0000) | - (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN), - ioaddr + TxStat0 + entry*4); - - if (++tp->cur_tx - tp->dirty_tx < NUM_TX_DESC) {/* Typical path */ - dev->tbusy = 0; - } else { - tp->tx_full = 1; - } + outl(tp->tx_flag | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN), + ioaddr + TxStatus0 + entry*4); + + /* There is a race condition here -- we might read dirty_tx, take an + interrupt that clears the Tx queue, and only then set tx_full. + So we do this in two phases. */ + if (++tp->cur_tx - tp->dirty_tx >= NUM_TX_DESC) { + set_bit(0, &tp->tx_full); + if (tp->cur_tx - (volatile unsigned int)tp->dirty_tx < NUM_TX_DESC) { + clear_bit(0, &tp->tx_full); + netif_unpause_tx_queue(dev); + } else + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); dev->trans_start = jiffies; - if (rtl8129_debug > 4) - printk(KERN_DEBUG"%s: Queued Tx packet at %p size %ld to slot %d.\n", - dev->name, skb->data, skb->len, entry); + if (tp->msg_level & NETIF_MSG_TX_QUEUED) + printk(KERN_DEBUG"%s: Queued Tx packet at %p size %d to slot %d.\n", + dev->name, skb->data, (int)skb->len, entry); return 0; } @@ -881,31 +1061,32 @@ rtl8129_start_xmit(struct sk_buff *skb, struct device *dev) after the Tx thread. */ static void rtl8129_interrupt(int irq, void *dev_instance, struct pt_regs *regs) { - struct device *dev = (struct device *)dev_instance; - struct rtl8129_private *tp; - int ioaddr, boguscnt = max_interrupt_work; - int status; - - if (dev == NULL) { - printk (KERN_ERR"rtl8139_interrupt(): IRQ %d for unknown device.\n", - irq); + struct net_device *dev = (struct net_device *)dev_instance; + struct rtl8129_private *np = (struct rtl8129_private *)dev->priv; + struct rtl8129_private *tp = np; + int boguscnt = np->max_interrupt_work; + long ioaddr = dev->base_addr; + int link_changed = 0; /* Grrr, avoid bogus "uninitialized" warning */ + +#if defined(__i386__) && LINUX_VERSION_CODE < 0x20123 + /* A lock to prevent simultaneous entry bug on Intel SMP machines. */ + if (test_and_set_bit(0, (void*)&dev->interrupt)) { + printk(KERN_ERR"%s: SMP simultaneous entry of an interrupt handler.\n", + dev->name); + dev->interrupt = 0; /* Avoid halting machine. */ return; } - - ioaddr = dev->base_addr; - tp = (struct rtl8129_private *)dev->priv; - if (test_and_set_bit(0, (void*)&tp->in_interrupt)) { - printk(KERN_ERR "%s: Re-entering the interrupt handler.\n", dev->name); - return; - } - dev->interrupt = 1; +#endif do { - status = inw(ioaddr + IntrStatus); - /* Acknowledge all of the current interrupt sources ASAP. */ + int status = inw(ioaddr + IntrStatus); + /* Acknowledge all of the current interrupt sources ASAP, but + an first get an additional status bit from CSCR. */ + if (status & RxUnderrun) + link_changed = inw(ioaddr+CSCR) & CSCR_LinkChangeBit; outw(status, ioaddr + IntrStatus); - if (rtl8129_debug > 4) + if (tp->msg_level & NETIF_MSG_INTR) printk(KERN_DEBUG"%s: interrupt status=%#4.4x new intstat=%#4.4x.\n", dev->name, status, inw(ioaddr + IntrStatus)); @@ -917,27 +1098,25 @@ static void rtl8129_interrupt(int irq, void *dev_instance, struct pt_regs *regs) rtl8129_rx(dev); if (status & (TxOK | TxErr)) { - unsigned int dirty_tx; + unsigned int dirty_tx = tp->dirty_tx; - for (dirty_tx = tp->dirty_tx; dirty_tx < tp->cur_tx; dirty_tx++) { + while (tp->cur_tx - dirty_tx > 0) { int entry = dirty_tx % NUM_TX_DESC; - int txstatus = inl(ioaddr + TxStat0 + entry*4); + int txstatus = inl(ioaddr + TxStatus0 + entry*4); - if ( ! (txstatus & TxHostOwns)) + if ( ! (txstatus & (TxStatOK | TxUnderrun | TxAborted))) break; /* It still hasn't been Txed */ /* Note: TxCarrierLost is always asserted at 100mbps. */ if (txstatus & (TxOutOfWindow | TxAborted)) { /* There was an major error, log it. */ -#ifndef final_version - if (rtl8129_debug > 1) + if (tp->msg_level & NETIF_MSG_TX_ERR) printk(KERN_NOTICE"%s: Transmit error, Tx status %8.8x.\n", dev->name, txstatus); -#endif tp->stats.tx_errors++; if (txstatus&TxAborted) { tp->stats.tx_aborted_errors++; - outl((TX_DMA_BURST<<8)|0x03000001, ioaddr + TxConfig); + outl(TX_DMA_BURST << 8, ioaddr + TxConfig); } if (txstatus&TxCarrierLost) tp->stats.tx_carrier_errors++; if (txstatus&TxOutOfWindow) tp->stats.tx_window_errors++; @@ -946,11 +1125,13 @@ static void rtl8129_interrupt(int irq, void *dev_instance, struct pt_regs *regs) tp->stats.collisions16++; #endif } else { -#ifdef ETHER_STATS - /* No count for tp->stats.tx_deferred */ -#endif + if (tp->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG "%s: Transmit done, Tx status" + " %8.8x.\n", dev->name, txstatus); if (txstatus & TxUnderrun) { - /* Todo: increase the Tx FIFO threshold. */ + /* Add 64 to the Tx FIFO threshold. */ + if (tp->tx_flag < 0x00300000) + tp->tx_flag += 0x00020000; tp->stats.tx_fifo_errors++; } tp->stats.collisions += (txstatus >> 24) & 15; @@ -961,48 +1142,34 @@ static void rtl8129_interrupt(int irq, void *dev_instance, struct pt_regs *regs) } /* Free the original skb. */ - dev_kfree_skb(tp->tx_skbuff[entry], FREE_WRITE); + dev_free_skb_irq(tp->tx_skbuff[entry]); tp->tx_skbuff[entry] = 0; + if (test_bit(0, &tp->tx_full)) { + /* The ring is no longer full, clear tbusy. */ + clear_bit(0, &tp->tx_full); + netif_resume_tx_queue(dev); + } + dirty_tx++; } #ifndef final_version if (tp->cur_tx - dirty_tx > NUM_TX_DESC) { printk(KERN_ERR"%s: Out-of-sync dirty pointer, %d vs. %d, full=%d.\n", - dev->name, dirty_tx, tp->cur_tx, tp->tx_full); + dev->name, dirty_tx, tp->cur_tx, (int)tp->tx_full); dirty_tx += NUM_TX_DESC; } #endif - - if (tp->tx_full && dev->tbusy - && dirty_tx > tp->cur_tx - NUM_TX_DESC) { - /* The ring is no longer full, clear tbusy. */ - tp->tx_full = 0; - dev->tbusy = 0; - mark_bh(NET_BH); - } - tp->dirty_tx = dirty_tx; } /* Check uncommon events with one test. */ if (status & (PCIErr|PCSTimeout |RxUnderrun|RxOverflow|RxFIFOOver |TxErr|RxErr)) { - /* Update the error count. */ - tp->stats.rx_missed_errors += inl(ioaddr + RxMissed); - outl(0, ioaddr + RxMissed); - - if (status & (RxUnderrun | RxOverflow | RxErr | RxFIFOOver)) - tp->stats.rx_errors++; - - if (status & (PCSTimeout)) tp->stats.rx_length_errors++; - if (status & (RxUnderrun|RxFIFOOver)) tp->stats.rx_fifo_errors++; - if (status & RxOverflow) { - tp->stats.rx_over_errors++; - tp->cur_rx = inw(ioaddr + RxBufAddr) % RX_BUF_LEN; - outw(tp->cur_rx - 16, ioaddr + RxBufPtr); - } - /* Error sources cleared above. */ + if (status == 0xffff) /* Missing chip! */ + break; + rtl_error(dev, status, link_changed); } + if (--boguscnt < 0) { printk(KERN_WARNING"%s: Too much work at interrupt, " "IntrStatus=0x%4.4x.\n", @@ -1013,55 +1180,65 @@ static void rtl8129_interrupt(int irq, void *dev_instance, struct pt_regs *regs) } } while (1); - if (rtl8129_debug > 3) + if (tp->msg_level & NETIF_MSG_INTR) printk(KERN_DEBUG"%s: exiting interrupt, intr_status=%#4.4x.\n", - dev->name, inl(ioaddr + IntrStatus)); + dev->name, inw(ioaddr + IntrStatus)); - dev->interrupt = 0; - clear_bit(0, (void*)&tp->in_interrupt); +#if defined(__i386__) && LINUX_VERSION_CODE < 0x20123 + clear_bit(0, (void*)&dev->interrupt); +#endif return; } /* The data sheet doesn't describe the Rx ring at all, so I'm guessing at the field alignments and semantics. */ -static int -rtl8129_rx(struct device *dev) +static int rtl8129_rx(struct net_device *dev) { struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv; - int ioaddr = dev->base_addr; + long ioaddr = dev->base_addr; unsigned char *rx_ring = tp->rx_ring; u16 cur_rx = tp->cur_rx; - if (rtl8129_debug > 4) + if (tp->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG"%s: In rtl8129_rx(), current %4.4x BufAddr %4.4x," " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx, inw(ioaddr + RxBufAddr), inw(ioaddr + RxBufPtr), inb(ioaddr + ChipCmd)); - while ((inb(ioaddr + ChipCmd) & 1) == 0) { - int ring_offset = cur_rx % RX_BUF_LEN; - u32 rx_status = *(u32*)(rx_ring + ring_offset); - int rx_size = rx_status >> 16; + while ((inb(ioaddr + ChipCmd) & RxBufEmpty) == 0) { + int ring_offset = cur_rx % tp->rx_buf_len; + u32 rx_status = le32_to_cpu(*(u32*)(rx_ring + ring_offset)); + int rx_size = rx_status >> 16; /* Includes the CRC. */ - if (rtl8129_debug > 4) { + if (tp->msg_level & NETIF_MSG_RX_STATUS) { int i; - printk(KERN_DEBUG"%s: rtl8129_rx() status %4.4x, size %4.4x, cur %4.4x.\n", + printk(KERN_DEBUG"%s: rtl8129_rx() status %4.4x, size %4.4x," + " cur %4.4x.\n", dev->name, rx_status, rx_size, cur_rx); printk(KERN_DEBUG"%s: Frame contents ", dev->name); for (i = 0; i < 70; i++) printk(" %2.2x", rx_ring[ring_offset + i]); printk(".\n"); } - if (rx_status & RxTooLong) { - if (rtl8129_debug > 0) - printk(KERN_NOTICE"%s: Oversized Ethernet frame, status %4.4x!\n", - dev->name, rx_status); - tp->stats.rx_length_errors++; - } else if (rx_status & - (RxBadSymbol|RxRunt|RxTooLong|RxCRCErr|RxBadAlign)) { - if (rtl8129_debug > 1) + if (rx_status & (RxBadSymbol|RxRunt|RxTooLong|RxCRCErr|RxBadAlign)) { + if (tp->msg_level & NETIF_MSG_RX_ERR) printk(KERN_DEBUG"%s: Ethernet frame had errors," - " status %4.4x.\n", dev->name, rx_status); + " status %8.8x.\n", dev->name, rx_status); + if (rx_status == 0xffffffff) { + printk(KERN_NOTICE"%s: Invalid receive status at ring " + "offset %4.4x\n", dev->name, ring_offset); + rx_status = 0; + } + if (rx_status & RxTooLong) { + if (tp->msg_level & NETIF_MSG_DRV) + printk(KERN_NOTICE"%s: Oversized Ethernet frame, status" + " %4.4x!\n", + dev->name, rx_status); + /* A.C.: The chip hangs here. + This should never occur, which means that we are screwed + when it does. + */ + } tp->stats.rx_errors++; if (rx_status & (RxBadSymbol|RxBadAlign)) tp->stats.rx_frame_errors++; @@ -1070,15 +1247,18 @@ rtl8129_rx(struct device *dev) /* Reset the receiver, based on RealTek recommendation. (Bug?) */ tp->cur_rx = 0; outb(CmdTxEnb, ioaddr + ChipCmd); + /* A.C.: Reset the multicast list. */ + set_rx_mode(dev); outb(CmdRxEnb | CmdTxEnb, ioaddr + ChipCmd); - outl((RX_FIFO_THRESH << 13) | (RX_BUF_LEN_IDX << 11) | - (RX_DMA_BURST<<8), ioaddr + RxConfig); } else { /* Malloc up new buffer, compatible with net-2e. */ /* Omit the four octet CRC from the length. */ struct sk_buff *skb; + int pkt_size = rx_size - 4; - skb = dev_alloc_skb(rx_size + 2); + /* Allocate a common-sized skbuff if we are close. */ + skb = dev_alloc_skb(1400 < pkt_size && pkt_size < PKT_BUF_SZ-2 ? + PKT_BUF_SZ : pkt_size + 2); if (skb == NULL) { printk(KERN_WARNING"%s: Memory squeeze, deferring packet.\n", dev->name); @@ -1089,13 +1269,14 @@ rtl8129_rx(struct device *dev) } skb->dev = dev; skb_reserve(skb, 2); /* 16 byte align the IP fields. */ - if (ring_offset+rx_size+4 > RX_BUF_LEN) { - int semi_count = RX_BUF_LEN - ring_offset - 4; + if (ring_offset + rx_size > tp->rx_buf_len) { + int semi_count = tp->rx_buf_len - ring_offset - 4; + /* This could presumably use two calls to copy_and_sum()? */ memcpy(skb_put(skb, semi_count), &rx_ring[ring_offset + 4], semi_count); - memcpy(skb_put(skb, rx_size-semi_count), rx_ring, - rx_size-semi_count); - if (rtl8129_debug > 4) { + memcpy(skb_put(skb, pkt_size-semi_count), rx_ring, + pkt_size-semi_count); + if (tp->msg_level & NETIF_MSG_PKTDATA) { int i; printk(KERN_DEBUG"%s: Frame wrap @%d", dev->name, semi_count); @@ -1104,22 +1285,23 @@ rtl8129_rx(struct device *dev) printk(".\n"); memset(rx_ring, 0xcc, 16); } - } else - memcpy(skb_put(skb, rx_size), &rx_ring[ring_offset + 4], - rx_size); + } else { + eth_copy_and_sum(skb, &rx_ring[ring_offset + 4], + pkt_size, 0); + skb_put(skb, pkt_size); + } skb->protocol = eth_type_trans(skb, dev); netif_rx(skb); #if LINUX_VERSION_CODE > 0x20119 - tp->stats.rx_bytes += rx_size; + tp->stats.rx_bytes += pkt_size; #endif tp->stats.rx_packets++; } - cur_rx += rx_size + 4; - cur_rx = (cur_rx + 3) & ~3; + cur_rx = (cur_rx + rx_size + 4 + 3) & ~3; outw(cur_rx - 16, ioaddr + RxBufPtr); } - if (rtl8129_debug > 4) + if (tp->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG"%s: Done rtl8129_rx(), current %4.4x BufAddr %4.4x," " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx, inw(ioaddr + RxBufAddr), @@ -1128,17 +1310,77 @@ rtl8129_rx(struct device *dev) return 0; } +/* Error and abnormal or uncommon events handlers. */ +static void rtl_error(struct net_device *dev, int status, int link_changed) +{ + struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (tp->msg_level & NETIF_MSG_LINK) + printk(KERN_NOTICE"%s: Abnormal interrupt, status %8.8x.\n", + dev->name, status); + + /* Update the error count. */ + tp->stats.rx_missed_errors += inl(ioaddr + RxMissed); + outl(0, ioaddr + RxMissed); + + if (status & RxUnderrun){ + /* This might actually be a link change event. */ + if ((tp->drv_flags & HAS_LNK_CHNG) && link_changed) { + /* Really link-change on new chips. */ + int lpar = inw(ioaddr + NWayLPAR); + int duplex = (lpar&0x0100) || (lpar & 0x01C0) == 0x0040 + || tp->duplex_lock; + /* Do not use MII_BMSR as that clears sticky bit. */ + if (inw(ioaddr + GPPinData) & 0x0004) { + netif_link_down(dev); + } else + netif_link_up(dev); + if (tp->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Link changed, link partner " + "%4.4x new duplex %d.\n", + dev->name, lpar, duplex); + tp->full_duplex = duplex; + /* Only count as errors with no link change. */ + status &= ~RxUnderrun; + } else { + /* If this does not work, we will do rtl_hw_start(dev); */ + outb(CmdTxEnb, ioaddr + ChipCmd); + set_rx_mode(dev); /* Reset the multicast list. */ + outb(CmdRxEnb | CmdTxEnb, ioaddr + ChipCmd); + + tp->stats.rx_errors++; + tp->stats.rx_fifo_errors++; + } + } + + if (status & (RxOverflow | RxErr | RxFIFOOver)) tp->stats.rx_errors++; + if (status & (PCSTimeout)) tp->stats.rx_length_errors++; + if (status & RxFIFOOver) tp->stats.rx_fifo_errors++; + if (status & RxOverflow) { + tp->stats.rx_over_errors++; + tp->cur_rx = inw(ioaddr + RxBufAddr) % tp->rx_buf_len; + outw(tp->cur_rx - 16, ioaddr + RxBufPtr); + } + if (status & PCIErr) { + u32 pci_cmd_status; + pci_read_config_dword(tp->pci_dev, PCI_COMMAND, &pci_cmd_status); + + printk(KERN_ERR "%s: PCI Bus error %4.4x.\n", + dev->name, pci_cmd_status); + } +} + static int -rtl8129_close(struct device *dev) +rtl8129_close(struct net_device *dev) { - int ioaddr = dev->base_addr; + long ioaddr = dev->base_addr; struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv; int i; - dev->start = 0; - dev->tbusy = 1; + netif_stop_tx_queue(dev); - if (rtl8129_debug > 1) + if (tp->msg_level & NETIF_MSG_IFDOWN) printk(KERN_DEBUG"%s: Shutting down ethercard, status was 0x%4.4x.\n", dev->name, inw(ioaddr + IntrStatus)); @@ -1158,15 +1400,15 @@ rtl8129_close(struct device *dev) for (i = 0; i < NUM_TX_DESC; i++) { if (tp->tx_skbuff[i]) - dev_kfree_skb(tp->tx_skbuff[i], FREE_WRITE); + dev_free_skb(tp->tx_skbuff[i]); tp->tx_skbuff[i] = 0; } kfree(tp->rx_ring); - kfree(tp->tx_bufs); + tp->rx_ring = 0; /* Green! Put the chip in low-power mode. */ outb(0xC0, ioaddr + Cfg9346); - outb(0x03, ioaddr + Config1); + outb(tp->config1 | 0x03, ioaddr + Config1); outb('H', ioaddr + HltClk); /* 'R' would leave the clock running. */ MOD_DEC_USE_COUNT; @@ -1174,13 +1416,69 @@ rtl8129_close(struct device *dev) return 0; } -static struct enet_statistics * -rtl8129_get_stats(struct device *dev) +/* + Handle user-level ioctl() calls. + We must use two numeric constants as the key because some clueless person + changed value for the symbolic name. +*/ +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct rtl8129_private *np = (struct rtl8129_private *)dev->priv; + u16 *data = (u16 *)&rq->ifr_data; + u32 *data32 = (void *)&rq->ifr_data; + + switch(cmd) { + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ + data[0] = np->phys[0] & 0x3f; + /* Fall Through */ + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + data[3] = mdio_read(dev, data[0], data[1] & 0x1f); + return 0; + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (data[0] == np->phys[0]) { + u16 value = data[2]; + switch (data[1]) { + case 0: + /* Check for autonegotiation on or reset. */ + np->medialock = (value & 0x9000) ? 0 : 1; + if (np->medialock) + np->full_duplex = (value & 0x0100) ? 1 : 0; + break; + case 4: np->advertising = value; break; + } + } + mdio_write(dev, data[0], data[1] & 0x1f, data[2]); + return 0; + case SIOCGPARAMS: + data32[0] = np->msg_level; + data32[1] = np->multicast_filter_limit; + data32[2] = np->max_interrupt_work; + data32[3] = 0; /* No rx_copybreak, always copy. */ + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + np->msg_level = data32[0]; + np->multicast_filter_limit = data32[1]; + np->max_interrupt_work = data32[2]; + return 0; + default: + return -EOPNOTSUPP; + } +} + +static struct net_device_stats * +rtl8129_get_stats(struct net_device *dev) { struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv; - int ioaddr = dev->base_addr; + long ioaddr = dev->base_addr; - if (dev->start) { + if (netif_running(dev)) { tp->stats.rx_missed_errors += inl(ioaddr + RxMissed); outl(0, ioaddr + RxMissed); } @@ -1189,100 +1487,236 @@ rtl8129_get_stats(struct device *dev) } /* Set or clear the multicast filter for this adaptor. - Note that we only use exclusion around actually queueing the - new frame, not around filling tp->setup_frame. This is non-deterministic - when re-entered but still correct. */ - -/* The little-endian AUTODIN II ethernet CRC calculation. - N.B. Do not use for bulk data, use a table-based routine instead. - This is common code and should be moved to net/core/crc.c */ -static unsigned const ethernet_polynomial_le = 0xedb88320U; -static inline unsigned ether_crc_le(int length, unsigned char *data) + This routine is not state sensitive and need not be SMP locked. */ + +static unsigned const ethernet_polynomial = 0x04c11db7U; +static inline u32 ether_crc(int length, unsigned char *data) { - unsigned int crc = 0xffffffff; /* Initial value. */ - while(--length >= 0) { + int crc = -1; + + while (--length >= 0) { unsigned char current_octet = *data++; int bit; - for (bit = 8; --bit >= 0; current_octet >>= 1) { - if ((crc ^ current_octet) & 1) { - crc >>= 1; - crc ^= ethernet_polynomial_le; - } else - crc >>= 1; - } + for (bit = 0; bit < 8; bit++, current_octet >>= 1) + crc = (crc << 1) ^ + ((crc < 0) ^ (current_octet & 1) ? ethernet_polynomial : 0); } return crc; } -static void set_rx_mode(struct device *dev) +/* Bits in RxConfig. */ +enum rx_mode_bits { + AcceptErr=0x20, AcceptRunt=0x10, AcceptBroadcast=0x08, + AcceptMulticast=0x04, AcceptMyPhys=0x02, AcceptAllPhys=0x01, +}; + +static void set_rx_mode(struct net_device *dev) { - int ioaddr = dev->base_addr; struct rtl8129_private *tp = (struct rtl8129_private *)dev->priv; - unsigned char mc_filter[8]; /* Multicast hash filter */ - int i; + long ioaddr = dev->base_addr; + u32 mc_filter[2]; /* Multicast hash filter */ + int i, rx_mode; + + if (tp->msg_level & NETIF_MSG_RXFILTER) + printk(KERN_DEBUG"%s: set_rx_mode(%4.4x) done -- Rx config %8.8x.\n", + dev->name, dev->flags, (int)inl(ioaddr + RxConfig)); - if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ + /* Note: do not reorder, GCC is clever about common statements. */ + if (dev->flags & IFF_PROMISC) { /* Unconditionally log net taps. */ printk(KERN_NOTICE"%s: Promiscuous mode enabled.\n", dev->name); - memset(mc_filter, 0xff, sizeof(mc_filter)); - outb(0x0F, ioaddr + RxConfig); - } else if ((dev->mc_count > 1000) || (dev->flags & IFF_ALLMULTI)) { + rx_mode = AcceptBroadcast|AcceptMulticast|AcceptMyPhys|AcceptAllPhys; + mc_filter[1] = mc_filter[0] = 0xffffffff; + } else if ((dev->mc_count > tp->multicast_filter_limit) + || (dev->flags & IFF_ALLMULTI)) { /* Too many to filter perfectly -- accept all multicasts. */ - memset(mc_filter, 0xff, sizeof(mc_filter)); - outb(0x0E, ioaddr + RxConfig); - } else if (dev->mc_count == 0) { - outb(0x0A, ioaddr + RxConfig); - return; + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; + mc_filter[1] = mc_filter[0] = 0xffffffff; } else { struct dev_mc_list *mclist; - - memset(mc_filter, 0, sizeof(mc_filter)); + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; + mc_filter[1] = mc_filter[0] = 0; for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) - set_bit(ether_crc_le(ETH_ALEN, mclist->dmi_addr) & 0x3f, - mc_filter); - } - /* ToDo: perhaps we need to stop the Tx and Rx process here? */ - if (memcmp(mc_filter, tp->mc_filter, sizeof(mc_filter))) { - for (i = 0; i < 2; i++) - outl(((u32 *)mc_filter)[i], ioaddr + MAR0 + i*4); - memcpy(tp->mc_filter, mc_filter, sizeof(mc_filter)); + set_bit(ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26, mc_filter); } - if (rtl8129_debug > 3) - printk(KERN_DEBUG"%s: set_rx_mode(%4.4x) done -- Rx config %8.8x.\n", - dev->name, dev->flags, inl(ioaddr + RxConfig)); + /* We can safely update without stopping the chip. */ + outl(tp->rx_config | rx_mode, ioaddr + RxConfig); + tp->mc_filter[0] = mc_filter[0]; + tp->mc_filter[1] = mc_filter[1]; + outl(mc_filter[0], ioaddr + MAR0 + 0); + outl(mc_filter[1], ioaddr + MAR0 + 4); return; } -#ifdef MODULE -/* An additional parameter that may be passed in... */ -static int debug = -1; +static int rtl_pwr_event(void *dev_instance, int event) +{ + struct net_device *dev = dev_instance; + struct rtl8129_private *np = (struct rtl8129_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (np->msg_level & NETIF_MSG_LINK) + printk("%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_ATTACH: + MOD_INC_USE_COUNT; + break; + case DRV_SUSPEND: + netif_device_detach(dev); + /* Disable interrupts, stop Tx and Rx. */ + outw(0x0000, ioaddr + IntrMask); + outb(0x00, ioaddr + ChipCmd); + /* Update the error counts. */ + np->stats.rx_missed_errors += inl(ioaddr + RxMissed); + outl(0, ioaddr + RxMissed); + break; + case DRV_RESUME: + netif_device_attach(dev); + rtl_hw_start(dev); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + unregister_netdev(dev); + release_region(dev->base_addr, pci_tbl[np->chip_id].io_size); +#ifndef USE_IO_OPS + iounmap((char *)dev->base_addr); +#endif + for (devp = &root_rtl8129_dev; *devp; devp = next) { + next = &((struct rtl8129_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (np->priv_addr) + kfree(np->priv_addr); + kfree(dev); + MOD_DEC_USE_COUNT; + break; + } + } + + return 0; +} + +#ifdef CARDBUS -int -init_module(void) +#include <pcmcia/driver_ops.h> + +static dev_node_t *rtl8139_attach(dev_locator_t *loc) { - int cards_found; + struct net_device *dev; + u16 dev_id; + u32 pciaddr; + u8 bus, devfn, irq; + long hostaddr; + /* Note: the chip index should match the 8139B pci_tbl[] entry. */ + int chip_idx = 2; + + if (loc->bus != LOC_PCI) return NULL; + bus = loc->b.pci.bus; devfn = loc->b.pci.devfn; + printk(KERN_DEBUG "rtl8139_attach(bus %d, function %d)\n", bus, devfn); +#ifdef USE_IO_OPS + pcibios_read_config_dword(bus, devfn, PCI_BASE_ADDRESS_0, &pciaddr); + hostaddr = pciaddr & PCI_BASE_ADDRESS_IO_MASK; +#else + pcibios_read_config_dword(bus, devfn, PCI_BASE_ADDRESS_1, &pciaddr); + hostaddr = (long)ioremap(pciaddr & PCI_BASE_ADDRESS_MEM_MASK, + pci_tbl[chip_idx].io_size); +#endif + pcibios_read_config_byte(bus, devfn, PCI_INTERRUPT_LINE, &irq); + pcibios_read_config_word(bus, devfn, PCI_DEVICE_ID, &dev_id); + if (hostaddr == 0 || irq == 0) { + printk(KERN_ERR "The %s interface at %d/%d was not assigned an %s.\n" + KERN_ERR " It will not be activated.\n", + pci_tbl[chip_idx].name, bus, devfn, + hostaddr == 0 ? "address" : "IRQ"); + return NULL; + } + dev = rtl8139_probe1(pci_find_slot(bus, devfn), NULL, + hostaddr, irq, chip_idx, 0); + if (dev) { + dev_node_t *node = kmalloc(sizeof(dev_node_t), GFP_KERNEL); + strcpy(node->dev_name, dev->name); + node->major = node->minor = 0; + node->next = NULL; + MOD_INC_USE_COUNT; + return node; + } + return NULL; +} - if (debug >= 0) - rtl8129_debug = debug; +static void rtl8139_detach(dev_node_t *node) +{ + struct net_device **devp, **next; + printk(KERN_INFO "rtl8139_detach(%s)\n", node->dev_name); + for (devp = &root_rtl8129_dev; *devp; devp = next) { + next = &((struct rtl8129_private *)(*devp)->priv)->next_module; + if (strcmp((*devp)->name, node->dev_name) == 0) break; + } + if (*devp) { + struct rtl8129_private *np = + (struct rtl8129_private *)(*devp)->priv; + unregister_netdev(*devp); + release_region((*devp)->base_addr, pci_tbl[np->chip_id].io_size); +#ifndef USE_IO_OPS + iounmap((char *)(*devp)->base_addr); +#endif + kfree(*devp); + if (np->priv_addr) + kfree(np->priv_addr); + *devp = *next; + kfree(node); + MOD_DEC_USE_COUNT; + } +} - root_rtl8129_dev = NULL; - cards_found = rtl8139_probe(0); +struct driver_operations realtek_ops = { + "realtek_cb", + rtl8139_attach, /*rtl8139_suspend*/0, /*rtl8139_resume*/0, rtl8139_detach +}; - return cards_found ? 0 : -ENODEV; +#endif /* Cardbus support */ + +#ifdef MODULE +int init_module(void) +{ + if (debug >= NETIF_MSG_DRV) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", versionA, versionB); +#ifdef CARDBUS + register_driver(&realtek_ops); + return 0; +#else + return pci_drv_register(&rtl8139_drv_id, NULL); +#endif } -void -cleanup_module(void) +void cleanup_module(void) { - struct device *next_dev; + struct net_device *next_dev; + +#ifdef CARDBUS + unregister_driver(&realtek_ops); +#else + pci_drv_unregister(&rtl8139_drv_id); +#endif - /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ while (root_rtl8129_dev) { - next_dev = ((struct rtl8129_private *)root_rtl8129_dev->priv)->next_module; + struct rtl8129_private *np = (void *)(root_rtl8129_dev->priv); unregister_netdev(root_rtl8129_dev); - release_region(root_rtl8129_dev->base_addr, RTL8129_TOTAL_SIZE); + release_region(root_rtl8129_dev->base_addr, + pci_tbl[np->chip_id].io_size); +#ifndef USE_IO_OPS + iounmap((char *)(root_rtl8129_dev->base_addr)); +#endif + next_dev = np->next_module; + if (np->priv_addr) + kfree(np->priv_addr); kfree(root_rtl8129_dev); root_rtl8129_dev = next_dev; } @@ -1292,8 +1726,9 @@ cleanup_module(void) /* * Local variables: - * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c rtl8139.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" - * SMP-compile-command: "gcc -D__SMP__ -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c rtl8139.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" + * compile-command: "make KERNVER=`uname -r` rtl8139.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c rtl8139.c" + * cardbus-compile-command: "gcc -DCARDBUS -DMODULE -Wall -Wstrict-prototypes -O6 -c rtl8139.c -o realtek_cb.o -I/usr/src/pcmcia/include/" * c-indent-level: 4 * c-basic-offset: 4 * tab-width: 4 diff --git a/linux/src/drivers/net/starfire.c b/linux/src/drivers/net/starfire.c new file mode 100644 index 0000000..b8702a0 --- /dev/null +++ b/linux/src/drivers/net/starfire.c @@ -0,0 +1,1535 @@ +/* starfire.c: Linux device driver for the Adaptec Starfire network adapter. */ +/* + Written/Copyright 1998-2003 by Donald Becker. + + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. + + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 914 Bay Ridge Road, Suite 220 + Annapolis MD 21403 + + Support information and updates available at + http://www.scyld.com/network/starfire.html +*/ + +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"starfire.c:v1.09 7/22/2003 Copyright by Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" Updates and info at http://www.scyld.com/network/starfire.html\n"; + +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ + +/* Used for tuning interrupt latency vs. overhead. */ +static int interrupt_mitigation = 0x0; + +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; + +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ +static int max_interrupt_work = 20; + +/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). + The Starfire has a 512 element hash table based on the Ethernet CRC. */ +static int multicast_filter_limit = 32; + +/* Set the copy breakpoint for the copy-only-tiny-frames scheme. + Setting to > 1518 effectively disables this feature. */ +static int rx_copybreak = 0; + +/* Used to pass the media type, etc. + Both 'options[]' and 'full_duplex[]' exist for driver interoperability, + however full_duplex[] should never be used in new configurations. + The media type is usually passed in 'options[]'. + The default is autonegotation for speed and duplex. + This should rarely be overridden. + Use option values 0x10/0x20 for 10Mbps, 0x100,0x200 for 100Mbps. + Use option values 0x10 and 0x100 for forcing half duplex fixed speed. + Use option values 0x20 and 0x200 for forcing full duplex operation. +*/ +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; + +/* Automatically extracted configuration info: +probe-func: starfire_probe +config-in: tristate 'Adaptec DuraLAN ("starfire") series PCI Ethernet support' CONFIG_DURLAN + +c-help-name: Adaptec DuraLAN ("starfire") series PCI Ethernet support +c-help-symbol: CONFIG_DURALAN +c-help: This driver is for the Adaptec DuraLAN series, the 6915, 62022 +c-help: and 62044 boards. +c-help: Design information, usage details and updates are available from +c-help: http://www.scyld.com/network/starfire.html +*/ + +/* Operational parameters that are set at compile time. */ + +/* The "native" ring sizes are either 256 or 2048. + However in some modes a descriptor may be marked to wrap the ring earlier. + The driver allocates a single page for each descriptor ring, constraining + the maximum size in an architecture-dependent way. +*/ +#define RX_RING_SIZE 256 +#define TX_RING_SIZE 32 +/* The completion queues are fixed at 1024 entries i.e. 4K or 8KB. */ +#define DONE_Q_SIZE 1024 + +/* Operational parameters that usually are not changed. */ +/* Time in jiffies before concluding the transmitter is hung. */ +#define TX_TIMEOUT (6*HZ) + +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. This is not a limit, + but a way to keep a consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 + +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif + +/* Include files, designed to support most kernel versions 2.0.0 and later. */ +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + +#include <linux/version.h> +#if defined(MODVERSIONS) +#include <linux/modversions.h> +#endif +#include <linux/module.h> + +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else +#include <linux/malloc.h> +#endif +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <asm/processor.h> /* Processor type for cache alignment. */ +#include <asm/bitops.h> +#include <asm/io.h> + +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif + +/* Condensed operations for readability. + Compatibility defines are in kern_compat.h */ + +#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) +#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) + +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif + +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); +MODULE_DESCRIPTION("Adaptec Starfire Ethernet driver"); +MODULE_LICENSE("GPL"); +MODULE_PARM(debug, "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(rx_copybreak, "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(multicast_filter_limit, "i"); +MODULE_PARM(max_interrupt_work, "i"); +MODULE_PARM_DESC(debug, "Driver message enable level (0-31)"); +MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex"); +MODULE_PARM_DESC(max_interrupt_work, + "Driver maximum events handled per interrupt"); +MODULE_PARM_DESC(full_duplex, + "Non-zero to set forced full duplex (deprecated)."); +MODULE_PARM_DESC(rx_copybreak, + "Breakpoint in bytes for copy-only-tiny-frames"); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast addresses before switching to Rx-all-multicast"); + +/* + Theory of Operation + +I. Board Compatibility + +This driver is for the Adaptec 6915 DuraLAN "Starfire" 64 bit PCI Ethernet +adapter, and the multiport boards using the same chip. + +II. Board-specific settings + +III. Driver operation + +IIIa. Ring buffers + +The Starfire hardware uses multiple fixed-size descriptor queues/rings. The +ring sizes are set fixed by the hardware, but may optionally be wrapped +earlier by the END bit in the descriptor. +This driver uses that hardware queue size for the Rx ring, where a large +number of entries has no ill effect beyond increases the potential backlog. +The Tx ring is wrapped with the END bit, since a large hardware Tx queue +disables the queue layer priority ordering and we have no mechanism to +utilize the hardware two-level priority queue. When modifying the +RX/TX_RING_SIZE pay close attention to page sizes and the ring-empty warning +levels. + +IIIb/c. Transmit/Receive Structure + +See the Adaptec manual for the many possible structures, and options for +each structure. There are far too many to document here. + +For transmit this driver uses type 1 transmit descriptors, and relies on +automatic minimum-length padding. It does not use the completion queue +consumer index, but instead checks for non-zero status entries. + +For receive this driver uses type 0 receive descriptors. The driver +allocates full frame size skbuffs for the Rx ring buffers, so all frames +should fit in a single descriptor. The driver does not use the completion +queue consumer index, but instead checks for non-zero status entries. + +When an incoming frame is less than RX_COPYBREAK bytes long, a fresh skbuff +is allocated and the frame is copied to the new skbuff. When the incoming +frame is larger, the skbuff is passed directly up the protocol stack. +Buffers consumed this way are replaced by newly allocated skbuffs in a later +phase of receive. + +A notable aspect of operation is that unaligned buffers are not permitted by +the Starfire hardware. The IP header at offset 14 in an ethernet frame thus +isn't longword aligned, which may cause problems on some machine +e.g. Alphas. Copied frames are put into the skbuff at an offset of "+2", +16-byte aligning the IP header. + +IIId. Synchronization + +The driver runs as two independent, single-threaded flows of control. One +is the send-packet routine, which enforces single-threaded use by the +dev->tbusy flag. The other thread is the interrupt handler, which is single +threaded by the hardware and interrupt handling software. + +The send packet thread has partial control over the Tx ring and 'dev->tbusy' +flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next +queue slot is empty, it clears the tbusy flag when finished otherwise it sets +the 'lp->tx_full' flag. + +The interrupt handler has exclusive control over the Rx ring and records stats +from the Tx ring. After reaping the stats, it marks the Tx queue entry as +empty by incrementing the dirty_tx mark. Iff the 'lp->tx_full' flag is set, it +clears both the tx_full and tbusy flags. + +IV. Notes + +IVb. References + +The Adaptec Starfire manuals, available only from Adaptec. +http://www.scyld.com/expert/100mbps.html +http://www.scyld.com/expert/NWay.html + +IVc. Errata + +*/ + + + +static void *starfire_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +static int starfire_pwr_event(void *dev_instance, int event); +enum chip_capability_flags {CanHaveMII=1, }; +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_MEM | PCI_ADDR0) +/* And maps in 0.5MB(!) -- no I/O mapping here! */ +#define MEM_ADDR_SZ 0x80000 + +#if 0 && (defined(__x86_64) || defined(__alpha__)) +/* Enable 64 bit address modes. */ +#define STARFIRE_ADDR_64BITS 1 +#endif + +static struct pci_id_info pci_id_tbl[] = { + {"Adaptec Starfire 6915", { 0x69159004, 0xffffffff, }, + PCI_IOTYPE, MEM_ADDR_SZ, CanHaveMII}, + {0,}, /* 0 terminated list. */ +}; + +struct drv_id_info starfire_drv_id = { + "starfire", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, + starfire_probe1, starfire_pwr_event }; + +/* Offsets to the device registers. + Unlike software-only systems, device drivers interact with complex hardware. + It's not useful to define symbolic names for every register bit in the + device. The name can only partially document the semantics and make + the driver longer and more difficult to read. + In general, only the important configuration values or bits changed + multiple times should be defined symbolically. +*/ +enum register_offsets { + PCIDeviceConfig=0x50040, GenCtrl=0x50070, IntrTimerCtrl=0x50074, + IntrClear=0x50080, IntrStatus=0x50084, IntrEnable=0x50088, + MIICtrl=0x52000, StationAddr=0x50120, EEPROMCtrl=0x51000, + TxDescCtrl=0x50090, + TxRingPtr=0x50098, HiPriTxRingPtr=0x50094, /* Low and High priority. */ + TxRingHiAddr=0x5009C, /* 64 bit address extension. */ + TxProducerIdx=0x500A0, TxConsumerIdx=0x500A4, + TxThreshold=0x500B0, + CompletionHiAddr=0x500B4, TxCompletionAddr=0x500B8, + RxCompletionAddr=0x500BC, RxCompletionQ2Addr=0x500C0, + CompletionQConsumerIdx=0x500C4, + RxDescQCtrl=0x500D4, RxDescQHiAddr=0x500DC, RxDescQAddr=0x500E0, + RxDescQIdx=0x500E8, RxDMAStatus=0x500F0, RxFilterMode=0x500F4, + TxMode=0x55000, +}; + +/* Bits in the interrupt status/mask registers. */ +enum intr_status_bits { + IntrNormalSummary=0x8000, IntrAbnormalSummary=0x02000000, + IntrRxDone=0x0300, IntrRxEmpty=0x10040, IntrRxPCIErr=0x80000, + IntrTxDone=0x4000, IntrTxEmpty=0x1000, IntrTxPCIErr=0x80000, + StatsMax=0x08000000, LinkChange=0xf0000000, + IntrTxDataLow=0x00040000, + IntrPCIPin=0x01, +}; + +/* Bits in the RxFilterMode register. */ +enum rx_mode_bits { + AcceptBroadcast=0x04, AcceptAllMulticast=0x02, AcceptAll=0x01, + AcceptMulticast=0x10, AcceptMyPhys=0xE040, +}; + +/* Misc. bits. Symbolic names so that may be searched for. */ +enum misc_bits { + ChipResetCmd=1, /* PCIDeviceConfig */ + PCIIntEnb=0x00800000, /* PCIDeviceConfig */ + TxEnable=0x0A, RxEnable=0x05, SoftIntr=0x100, /* GenCtrl */ +}; + +/* The Rx and Tx buffer descriptors. */ +struct starfire_rx_desc { + u32 rxaddr; /* Optionally 64 bits. */ +#if defined(STARFIRE_ADDR_64BITS) + u32 rxaddr_hi; /* Optionally 64 bits. */ +#endif +}; +enum rx_desc_bits { + RxDescValid=1, RxDescEndRing=2, +}; + +/* Completion queue entry. + You must update the page allocation, init_ring and the shift count in rx() + if using a larger format. */ +struct rx_done_desc { + u32 status; /* Low 16 bits is length. */ +#ifdef full_rx_status + u32 status2; + u16 vlanid; + u16 csum; /* partial checksum */ + u32 timestamp; +#endif +}; +enum rx_done_bits { + RxOK=0x20000000, RxFIFOErr=0x10000000, RxBufQ2=0x08000000, +}; + +/* Type 1 Tx descriptor. */ +struct starfire_tx_desc { + u32 status; /* Upper bits are status, lower 16 length. */ + u32 addr; +}; +enum tx_desc_bits { + TxDescID=0xB1010000, /* Also marks single fragment, add CRC. */ + TxDescIntr=0x08000000, TxRingWrap=0x04000000, +}; +struct tx_done_report { + u32 status; /* timestamp, index. */ +#if 0 + u32 intrstatus; /* interrupt status */ +#endif +}; + +#define PRIV_ALIGN 15 /* Required alignment mask */ +struct netdev_private { + /* Descriptor rings first for alignment. */ + struct starfire_rx_desc *rx_ring; + struct starfire_tx_desc *tx_ring; + struct net_device *next_module; /* Link for devices of this type. */ + void *priv_addr; /* Unaligned address for kfree */ + const char *product_name; + /* The addresses of rx/tx-in-place skbuffs. */ + struct sk_buff* rx_skbuff[RX_RING_SIZE]; + struct sk_buff* tx_skbuff[TX_RING_SIZE]; + u8 pad0[100]; /* Impact padding */ + /* Pointers to completion queues (full pages). Cache line pad.. */ + struct rx_done_desc *rx_done_q __attribute__((aligned (L1_CACHE_BYTES))); + unsigned int rx_done; + struct tx_done_report *tx_done_q __attribute__((aligned (L1_CACHE_BYTES))); + unsigned int tx_done; + + struct net_device_stats stats; + struct timer_list timer; /* Media monitoring timer. */ + int msg_level; + int chip_id, drv_flags; + struct pci_dev *pci_dev; + /* Frequently used values: keep some adjacent for cache effect. */ + int max_interrupt_work; + int intr_enable; + unsigned int restore_intr_enable:1; /* Set if temporarily masked. */ + unsigned int polling:1; /* Erk, IRQ err. */ + + unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ + unsigned int rx_buf_sz; /* Based on MTU+slack. */ + int rx_copybreak; + + unsigned int cur_tx, dirty_tx; + unsigned int tx_full:1; /* The Tx queue is full. */ + /* These values keep track of the transceiver/media in use. */ + unsigned int full_duplex:1, /* Full-duplex operation requested. */ + medialock:1, /* Xcvr set to fixed speed/duplex. */ + rx_flowctrl:1, + tx_flowctrl:1; /* Use 802.3x flow control. */ + unsigned int default_port; /* Last dev->if_port value. */ + u32 tx_mode; + u8 tx_threshold; + u32 cur_rx_mode; + u16 mc_filter[32]; + int multicast_filter_limit; + + /* MII transceiver section. */ + int mii_cnt; /* MII device addresses. */ + u16 advertising; /* NWay media advertisement */ + unsigned char phys[2]; /* MII device addresses. */ +}; + +static int mdio_read(struct net_device *dev, int phy_id, int location); +static void mdio_write(struct net_device *dev, int phy_id, int location, + int value); +static int netdev_open(struct net_device *dev); +static int change_mtu(struct net_device *dev, int new_mtu); +static void check_duplex(struct net_device *dev); +static void netdev_timer(unsigned long data); +static void tx_timeout(struct net_device *dev); +static void init_ring(struct net_device *dev); +static int start_tx(struct sk_buff *skb, struct net_device *dev); +static void intr_handler(int irq, void *dev_instance, struct pt_regs *regs); +static void netdev_error(struct net_device *dev, int intr_status); +static int netdev_rx(struct net_device *dev); +static void netdev_error(struct net_device *dev, int intr_status); +static void set_rx_mode(struct net_device *dev); +static struct net_device_stats *get_stats(struct net_device *dev); +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +static int netdev_close(struct net_device *dev); + + + +/* A list of our installed devices, for removing the driver module. */ +static struct net_device *root_net_dev = NULL; + +#ifndef MODULE +int starfire_probe(struct net_device *dev) +{ + if (pci_drv_register(&starfire_drv_id, dev) < 0) + return -ENODEV; + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return 0; +} +#endif + +static void *starfire_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int card_idx) +{ + struct net_device *dev; + struct netdev_private *np; + void *priv_mem; + int i, option = card_idx < MAX_UNITS ? options[card_idx] : 0; + + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; + + printk(KERN_INFO "%s: %s at 0x%lx, ", + dev->name, pci_id_tbl[chip_idx].name, ioaddr); + + /* Serial EEPROM reads are hidden by the hardware. */ + for (i = 0; i < 6; i++) + dev->dev_addr[i] = readb(ioaddr + EEPROMCtrl + 20-i); + for (i = 0; i < 5; i++) + printk("%2.2x:", dev->dev_addr[i]); + printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq); + + /* Make certain elements e.g. descriptor lists are aligned. */ + priv_mem = kmalloc(sizeof(*np) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; + + /* Reset the chip to erase previous misconfiguration. */ + writel(ChipResetCmd, ioaddr + PCIDeviceConfig); + + dev->base_addr = ioaddr; + dev->irq = irq; + + dev->priv = np = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); + memset(np, 0, sizeof(*np)); + np->priv_addr = priv_mem; + + np->next_module = root_net_dev; + root_net_dev = dev; + + np->pci_dev = pdev; + np->chip_id = chip_idx; + np->drv_flags = pci_id_tbl[chip_idx].drv_flags; + np->msg_level = (1 << debug) - 1; + np->rx_copybreak = rx_copybreak; + np->max_interrupt_work = max_interrupt_work; + np->multicast_filter_limit = multicast_filter_limit; + + if (dev->mem_start) + option = dev->mem_start; + + if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) + np->full_duplex = 1; + + if (np->full_duplex) { + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO "%s: Set to forced full duplex, autonegotiation" + " disabled.\n", dev->name); + np->medialock = 1; + } + + /* The chip-specific entries in the device structure. */ + dev->open = &netdev_open; + dev->hard_start_xmit = &start_tx; + dev->stop = &netdev_close; + dev->get_stats = &get_stats; + dev->set_multicast_list = &set_rx_mode; + dev->do_ioctl = &mii_ioctl; + dev->change_mtu = &change_mtu; + + if (np->drv_flags & CanHaveMII) { + int phy, phy_idx = 0; + for (phy = 0; phy < 32 && phy_idx < 4; phy++) { + int mii_status = mdio_read(dev, phy, 1); + if (mii_status != 0xffff && mii_status != 0x0000) { + np->phys[phy_idx++] = phy; + np->advertising = mdio_read(dev, phy, 4); + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO "%s: MII PHY found at address %d, status " + "0x%4.4x advertising %4.4x.\n", + dev->name, phy, mii_status, np->advertising); + } + } + np->mii_cnt = phy_idx; + } + + /* Force the media type after detecting the transceiver. */ + if (option > 0) { + if (option & 0x220) + np->full_duplex = 1; + np->default_port = option & 0x3ff; + if (np->default_port & 0x330) { + np->medialock = 1; + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO " Forcing %dMbs %s-duplex operation.\n", + (option & 0x300 ? 100 : 10), + (np->full_duplex ? "full" : "half")); + mdio_write(dev, np->phys[0], 0, + ((option & 0x300) ? 0x2000 : 0) | /* 100mbps? */ + (np->full_duplex ? 0x0100 : 0)); /* Full duplex? */ + } + } + + return dev; +} + + +/* Read the MII Management Data I/O (MDIO) interfaces. */ + +static int mdio_read(struct net_device *dev, int phy_id, int location) +{ + long mdio_addr = dev->base_addr + MIICtrl + (phy_id<<7) + (location<<2); + int result, boguscnt=1000; + /* ??? Should we add a busy-wait here? */ + do + result = readl(mdio_addr); + while ((result & 0xC0000000) != 0x80000000 && --boguscnt >= 0); + return result & 0xffff; +} + +static void mdio_write(struct net_device *dev, int phy_id, int location, int value) +{ + long mdio_addr = dev->base_addr + MIICtrl + (phy_id<<7) + (location<<2); + writel(value, mdio_addr); + /* The busy-wait will occur before a read. */ + return; +} + + +static int netdev_open(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int i; + + MOD_INC_USE_COUNT; + + if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; + return -EAGAIN; + } + + /* We have no reports that indicate we need to reset the chip. + But to be on the safe side... */ + /* Disable the Rx and Tx, and reset the chip. */ + writel(0, ioaddr + GenCtrl); + writel(ChipResetCmd, ioaddr + PCIDeviceConfig); + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: netdev_open() irq %d.\n", + dev->name, dev->irq); + /* Allocate the various queues, failing gracefully. */ + if (np->tx_done_q == 0) + np->tx_done_q = (struct tx_done_report *)get_free_page(GFP_KERNEL); + if (np->rx_done_q == 0) + np->rx_done_q = (struct rx_done_desc *)get_free_page(GFP_KERNEL); + if (np->tx_ring == 0) + np->tx_ring = (struct starfire_tx_desc *)get_free_page(GFP_KERNEL); + if (np->rx_ring == 0) + np->rx_ring = (struct starfire_rx_desc *)get_free_page(GFP_KERNEL); + if (np->tx_done_q == 0 || np->rx_done_q == 0 + || np->rx_ring == 0 || np->tx_ring == 0) { + /* Retain the pages to increase our chances next time. */ + MOD_DEC_USE_COUNT; + return -ENOMEM; + } + + init_ring(dev); + /* Set the size of the Rx buffers. */ + writel((np->rx_buf_sz<<16) | 0xA000, ioaddr + RxDescQCtrl); + + /* Set Tx descriptor to type 1 and padding to 0 bytes. */ + writel(0x02000401, ioaddr + TxDescCtrl); + +#if defined(STARFIRE_ADDR_64BITS) + writel(virt_to_bus(np->rx_ring) >> 32, ioaddr + RxDescQHiAddr); + writel(virt_to_bus(np->tx_ring) >> 32, ioaddr + TxRingHiAddr); +#else + writel(0, ioaddr + RxDescQHiAddr); + writel(0, ioaddr + TxRingHiAddr); + writel(0, ioaddr + CompletionHiAddr); +#endif + writel(virt_to_bus(np->rx_ring), ioaddr + RxDescQAddr); + writel(virt_to_bus(np->tx_ring), ioaddr + TxRingPtr); + + writel(virt_to_bus(np->tx_done_q), ioaddr + TxCompletionAddr); + writel(virt_to_bus(np->rx_done_q), ioaddr + RxCompletionAddr); + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Filling in the station address.\n", dev->name); + + /* Fill both the unused Tx SA register and the Rx perfect filter. */ + for (i = 0; i < 6; i++) + writeb(dev->dev_addr[i], ioaddr + StationAddr + 5-i); + for (i = 0; i < 16; i++) { + u16 *eaddrs = (u16 *)dev->dev_addr; + long setup_frm = ioaddr + 0x56000 + i*16; + writew(cpu_to_be16(eaddrs[2]), setup_frm); setup_frm += 4; + writew(cpu_to_be16(eaddrs[1]), setup_frm); setup_frm += 4; + writew(cpu_to_be16(eaddrs[0]), setup_frm); setup_frm += 8; + } + + /* Initialize other registers. */ + /* Configure the PCI bus bursts and FIFO thresholds. */ + np->tx_mode = 0; /* Initialized when TxMode set. */ + np->tx_threshold = 4; + writel(np->tx_threshold, ioaddr + TxThreshold); + writel(interrupt_mitigation, ioaddr + IntrTimerCtrl); + + if (dev->if_port == 0) + dev->if_port = np->default_port; + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Setting the Rx and Tx modes.\n", dev->name); + set_rx_mode(dev); + + np->advertising = mdio_read(dev, np->phys[0], 4); + check_duplex(dev); + netif_start_tx_queue(dev); + + /* Set the interrupt mask and enable PCI interrupts. */ + np->intr_enable = IntrRxDone | IntrRxEmpty | IntrRxPCIErr | + IntrTxDone | IntrTxEmpty | IntrTxPCIErr | + StatsMax | LinkChange | IntrNormalSummary | IntrAbnormalSummary + | 0x0010; + writel(np->intr_enable, ioaddr + IntrEnable); + writel(PCIIntEnb | readl(ioaddr + PCIDeviceConfig), + ioaddr + PCIDeviceConfig); + + /* Enable the Rx and Tx units. */ + writel(TxEnable|RxEnable, ioaddr + GenCtrl); + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Done netdev_open().\n", + dev->name); + + /* Set the timer to check for link beat. */ + init_timer(&np->timer); + np->timer.expires = jiffies + 3*HZ; + np->timer.data = (unsigned long)dev; + np->timer.function = &netdev_timer; /* timer handler */ + add_timer(&np->timer); + + return 0; +} + +/* The starfire can handle frame sizes up to 64KB, but we arbitrarily + * limit the size. + */ +static int change_mtu(struct net_device *dev, int new_mtu) +{ + if ((new_mtu < 68) || (new_mtu > 17268)) + return -EINVAL; + if (netif_running(dev)) + return -EBUSY; + dev->mtu = new_mtu; + return 0; +} + +static void check_duplex(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int new_tx_mode; + + new_tx_mode = 0x0C04 | (np->tx_flowctrl ? 0x0800:0) + | (np->rx_flowctrl ? 0x0400:0); + if (np->medialock) { + if (np->full_duplex) + new_tx_mode |= 2; + } else { + int mii_reg5 = mdio_read(dev, np->phys[0], 5); + int negotiated = mii_reg5 & np->advertising; + int duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040; + if (duplex) + new_tx_mode |= 2; + if (np->full_duplex != duplex) { + np->full_duplex = duplex; + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d" + " negotiated capability %4.4x.\n", dev->name, + duplex ? "full" : "half", np->phys[0], negotiated); + } + } + if (new_tx_mode != np->tx_mode) { + np->tx_mode = new_tx_mode; + writel(np->tx_mode | 0x8000, ioaddr + TxMode); + writel(np->tx_mode, ioaddr + TxMode); + } +} + +/* Check for duplex changes, but mostly check for failures. */ +static void netdev_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int status = readl(ioaddr + IntrStatus); + static long last_msg = 0; + + /* Normally we check only every few seconds. */ + np->timer.expires = jiffies + 60*HZ; + + if (np->msg_level & NETIF_MSG_TIMER) { + printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x.\n", + dev->name, status); + } + + /* Check for a missing chip or failed interrupt line. + * The latter may be falsely triggered, so we check twice. */ + if (status == 0xffffffff) { + if (jiffies - last_msg > 10*HZ) { + last_msg = jiffies; + printk(KERN_ERR "%s: The Starfire chip is missing!\n", + dev->name); + } + } else if (np->polling) { + if (status & IntrPCIPin) { + intr_handler(dev->irq, dev, 0); + if (jiffies - last_msg > 10*HZ) { + printk(KERN_ERR "%s: IRQ %d is still blocked!\n", + dev->name, dev->irq); + last_msg = jiffies; + } + } else if (jiffies - last_msg > 10*HZ) + np->polling = 0; + np->timer.expires = jiffies + 2; + } else if (status & IntrPCIPin) { + int new_status = readl(ioaddr + IntrStatus); + /* Bogus hardware IRQ mapping: Fake an interrupt handler call. */ + if (new_status & IntrPCIPin) { + printk(KERN_ERR "%s: IRQ %d is not raising an interrupt! " + "Status %8.8x/%8.8x. \n", + dev->name, dev->irq, status, new_status); + intr_handler(dev->irq, dev, 0); + np->timer.expires = jiffies + 2; + np->polling = 1; + } + } else if (netif_queue_paused(dev) && + np->cur_tx - np->dirty_tx > 1 && + (jiffies - dev->trans_start) > TX_TIMEOUT) { + /* This will not catch tbusy incorrectly set when the queue is empty, + * but that state should never occur. */ + tx_timeout(dev); + } + + check_duplex(dev); + + add_timer(&np->timer); +} + +static void tx_timeout(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + printk(KERN_WARNING "%s: Transmit timed out, status %8.8x," + " resetting...\n", dev->name, (int)readl(ioaddr + IntrStatus)); + +#if defined(__i386__) + if (np->msg_level & NETIF_MSG_TX_ERR) { + int i; + printk("\n" KERN_DEBUG " Tx ring %p: ", np->tx_ring); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" %4.4x", np->tx_ring[i].status); + printk("\n" KERN_DEBUG " Rx ring %p: ", np->rx_ring); + for (i = 0; i < RX_RING_SIZE; i++) + printk(" %8.8x", (unsigned int)np->rx_ring[i].rxaddr); + printk("\n"); + } +#endif + + /* If a specific problem is reported, reinitialize the hardware here. */ + dev->if_port = 0; + /* Stop and restart the chip's Tx processes . */ + writel(0, ioaddr + GenCtrl); + /* Enable the Rx and Tx units. */ + writel(TxEnable|RxEnable, ioaddr + GenCtrl); + + dev->trans_start = jiffies; + np->stats.tx_errors++; + return; +} + + +/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ +static void init_ring(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + np->tx_full = 0; + np->cur_rx = np->cur_tx = 0; + np->dirty_rx = np->rx_done = np->dirty_tx = np->tx_done = 0; + + np->rx_buf_sz = (dev->mtu <= 1522 ? PKT_BUF_SZ : + (dev->mtu + 14 + 3) & ~3); /* Round to word. */ + + /* Fill in the Rx buffers. Handle allocation failure gracefully. */ + for (i = 0; i < RX_RING_SIZE; i++) { + struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); + np->rx_skbuff[i] = skb; + if (skb == NULL) + break; + skb->dev = dev; /* Mark as being used by this device. */ + /* Grrr, we cannot offset to correctly align the IP header. */ + np->rx_ring[i].rxaddr = + virt_to_le32desc(skb->tail) | cpu_to_le32(RxDescValid); + } + writew(i - 1, dev->base_addr + RxDescQIdx); + np->dirty_rx = (unsigned int)(i - RX_RING_SIZE); + + /* Clear the remainder of the Rx buffer ring. */ + for ( ; i < RX_RING_SIZE; i++) { + np->rx_ring[i].rxaddr = 0; + np->rx_skbuff[i] = 0; + } + /* Mark the last entry as wrapping the ring. */ + np->rx_ring[i-1].rxaddr |= cpu_to_le32(RxDescEndRing); + + /* Clear the completion rings. */ + for (i = 0; i < DONE_Q_SIZE; i++) { + np->rx_done_q[i].status = 0; + np->tx_done_q[i].status = 0; + } + + for (i = 0; i < TX_RING_SIZE; i++) { + np->tx_skbuff[i] = 0; + np->tx_ring[i].status = 0; + } + return; +} + +static int start_tx(struct sk_buff *skb, struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + unsigned entry; + + /* Block a timer-based transmit from overlapping. This happens when + packets are presumed lost, and we use this check the Tx status. */ + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + tx_timeout(dev); + return 1; + } + + /* Caution: the write order is important here, set the field + with the "ownership" bits last. */ + + /* Calculate the next Tx descriptor entry. */ + entry = np->cur_tx % TX_RING_SIZE; + + np->tx_skbuff[entry] = skb; + + np->tx_ring[entry].addr = virt_to_le32desc(skb->data); + /* Add "| TxDescIntr" to generate Tx-done interrupts. */ + np->tx_ring[entry].status = cpu_to_le32(skb->len | TxDescID); +#if 1 + if (entry >= TX_RING_SIZE-1) { /* Wrap ring */ + np->tx_ring[entry].status |= cpu_to_le32(TxRingWrap | TxDescIntr); + entry = -1; + } +#endif + + /* On some architectures better performance results by explicitly + flushing cache lines: pci_flush_virt(skb->data, skb->len); */ + + np->cur_tx++; + /* Update the producer index. */ + writel(++entry, dev->base_addr + TxProducerIdx); + + /* cf. using TX_QUEUE_LEN instead of TX_RING_SIZE here. */ + if (np->cur_tx - np->dirty_tx >= TX_RING_SIZE - 1) { + np->tx_full = 1; + /* Check for the rare case of a just-cleared queue. */ + if (np->cur_tx - (volatile unsigned int)np->dirty_tx + < TX_RING_SIZE - 2) { + np->tx_full = 0; + netif_unpause_tx_queue(dev); + } else + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); /* Typical path */ + + dev->trans_start = jiffies; + + if (np->msg_level & NETIF_MSG_TX_QUEUED) { + printk(KERN_DEBUG "%s: Tx frame #%d slot %d %8.8x %8.8x.\n", + dev->name, np->cur_tx, entry, + np->tx_ring[entry].status, np->tx_ring[entry].addr); + } + return 0; +} + +/* The interrupt handler does all of the Rx thread work and cleans up + after the Tx thread. */ +static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) +{ + struct net_device *dev = (struct net_device *)dev_instance; + struct netdev_private *np; + long ioaddr; + int boguscnt; + +#ifndef final_version /* Can never occur. */ + if (dev == NULL) { + printk (KERN_ERR "Netdev interrupt handler(): IRQ %d for unknown " + "device.\n", irq); + return; + } +#endif + + ioaddr = dev->base_addr; + np = (struct netdev_private *)dev->priv; + boguscnt = np->max_interrupt_work; + + do { + u32 intr_status = readl(ioaddr + IntrClear); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Interrupt status %4.4x.\n", + dev->name, intr_status); + + if (intr_status == 0 || intr_status == 0xffffffff) + break; + + if (intr_status & IntrRxDone) + netdev_rx(dev); + + /* Scavenge the skbuff list based on the Tx-done queue. + There are redundant checks here that may be cleaned up + after the driver has proven to be reliable. */ + { + int consumer = readl(ioaddr + TxConsumerIdx); + int tx_status; + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Tx Consumer index is %d.\n", + dev->name, consumer); +#if 0 + if (np->tx_done >= 250 || np->tx_done == 0) + printk(KERN_DEBUG "%s: Tx completion entry %d is %8.8x, " + "%d is %8.8x.\n", dev->name, + np->tx_done, np->tx_done_q[np->tx_done].status, + (np->tx_done+1) & (DONE_Q_SIZE-1), + np->tx_done_q[(np->tx_done+1)&(DONE_Q_SIZE-1)].status); +#endif + while ((tx_status = cpu_to_le32(np->tx_done_q[np->tx_done].status)) + != 0) { + if (np->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG "%s: Tx completion entry %d is %8.8x.\n", + dev->name, np->tx_done, tx_status); + if ((tx_status & 0xe0000000) == 0xa0000000) { + np->stats.tx_packets++; + } else if ((tx_status & 0xe0000000) == 0x80000000) { + u16 entry = tx_status; /* Implicit truncate */ + entry >>= 3; + /* Scavenge the descriptor. */ + if (np->tx_skbuff[entry]) { + dev_free_skb_irq(np->tx_skbuff[entry]); + } else + printk(KERN_WARNING "%s: Null skbuff at entry %d!!!\n", + dev->name, entry); + np->tx_skbuff[entry] = 0; + np->dirty_tx++; + } + np->tx_done_q[np->tx_done].status = 0; + np->tx_done = (np->tx_done+1) & (DONE_Q_SIZE-1); + } + writew(np->tx_done, ioaddr + CompletionQConsumerIdx + 2); + } + if (np->tx_full && np->cur_tx - np->dirty_tx < TX_RING_SIZE - 4) { + /* The ring is no longer full, allow new TX entries. */ + np->tx_full = 0; + netif_resume_tx_queue(dev); + } + + /* Abnormal error summary/uncommon events handlers. */ + if (intr_status & IntrAbnormalSummary) + netdev_error(dev, intr_status); + + if (--boguscnt < 0) { + printk(KERN_WARNING "%s: Too much work at interrupt, " + "status=0x%4.4x.\n", + dev->name, intr_status); + writel(0x0021, ioaddr + IntrTimerCtrl); + break; + } + } while (1); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", + dev->name, (int)readl(ioaddr + IntrStatus)); + + return; +} + +/* This routine is logically part of the interrupt handler, but separated + for clarity and better register allocation. */ +static int netdev_rx(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int boguscnt = np->dirty_rx + RX_RING_SIZE - np->cur_rx; + u32 desc_status; + + if (np->rx_done_q == 0) { + printk(KERN_ERR "%s: rx_done_q is NULL! rx_done is %d. %p.\n", + dev->name, np->rx_done, np->tx_done_q); + return 0; + } + + /* If EOP is set on the next entry, it's a new packet. Send it up. */ + while ((desc_status = le32_to_cpu(np->rx_done_q[np->rx_done].status)) != 0) { + if (np->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " netdev_rx() status of %d was %8.8x.\n", + np->rx_done, desc_status); + if (--boguscnt < 0) + break; + if ( ! (desc_status & RxOK)) { + /* There was a error. */ + if (np->msg_level & NETIF_MSG_RX_ERR) + printk(KERN_DEBUG " netdev_rx() Rx error was %8.8x.\n", + desc_status); + np->stats.rx_errors++; + if (desc_status & RxFIFOErr) + np->stats.rx_fifo_errors++; + } else { + struct sk_buff *skb; + u16 pkt_len = desc_status; /* Implicitly Truncate */ + int entry = (desc_status >> 16) & 0x7ff; + +#ifndef final_version + if (np->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d" + ", bogus_cnt %d.\n", + pkt_len, boguscnt); +#endif + /* Check if the packet is long enough to accept without copying + to a minimally-sized skbuff. */ + if (pkt_len < rx_copybreak + && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { + skb->dev = dev; + skb_reserve(skb, 2); /* 16 byte align the IP header */ +#if HAS_IP_COPYSUM /* Call copy + cksum if available. */ + eth_copy_and_sum(skb, np->rx_skbuff[entry]->tail, pkt_len, 0); + skb_put(skb, pkt_len); +#else + memcpy(skb_put(skb, pkt_len), np->rx_skbuff[entry]->tail, + pkt_len); +#endif + } else { + char *temp = skb_put(skb = np->rx_skbuff[entry], pkt_len); + np->rx_skbuff[entry] = NULL; +#ifndef final_version /* Remove after testing. */ + if (le32desc_to_virt(np->rx_ring[entry].rxaddr & ~3) != temp) + printk(KERN_ERR "%s: Internal fault: The skbuff addresses " + "do not match in netdev_rx: %p vs. %p / %p.\n", + dev->name, + le32desc_to_virt(np->rx_ring[entry].rxaddr), + skb->head, temp); +#endif + } + skb->protocol = eth_type_trans(skb, dev); +#ifdef full_rx_status + if (np->rx_done_q[np->rx_done].status2 & cpu_to_le32(0x01000000)) + skb->ip_summed = CHECKSUM_UNNECESSARY; +#endif + netif_rx(skb); + dev->last_rx = jiffies; + np->stats.rx_packets++; + } + np->cur_rx++; + np->rx_done_q[np->rx_done].status = 0; + np->rx_done = (np->rx_done + 1) & (DONE_Q_SIZE-1); + } + writew(np->rx_done, dev->base_addr + CompletionQConsumerIdx); + + /* Refill the Rx ring buffers. */ + for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) { + struct sk_buff *skb; + int entry = np->dirty_rx % RX_RING_SIZE; + if (np->rx_skbuff[entry] == NULL) { + skb = dev_alloc_skb(np->rx_buf_sz); + np->rx_skbuff[entry] = skb; + if (skb == NULL) + break; /* Better luck next round. */ + skb->dev = dev; /* Mark as being used by this device. */ + np->rx_ring[entry].rxaddr = + virt_to_le32desc(skb->tail) | cpu_to_le32(RxDescValid); + } + if (entry == RX_RING_SIZE - 1) + np->rx_ring[entry].rxaddr |= cpu_to_le32(RxDescEndRing); + /* We could defer this until later... */ + writew(entry, dev->base_addr + RxDescQIdx); + } + + if ((np->msg_level & NETIF_MSG_RX_STATUS) + || memcmp(np->pad0, np->pad0 + 1, sizeof(np->pad0) -1)) + printk(KERN_DEBUG " exiting netdev_rx() status of %d was %8.8x %d.\n", + np->rx_done, desc_status, + memcmp(np->pad0, np->pad0 + 1, sizeof(np->pad0) -1)); + + return 0; +} + +static void netdev_error(struct net_device *dev, int intr_status) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + + if (intr_status & LinkChange) { + int phy_num = np->phys[0]; + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_NOTICE "%s: Link changed: Autonegotiation advertising" + " %4.4x partner %4.4x.\n", dev->name, + mdio_read(dev, phy_num, 4), + mdio_read(dev, phy_num, 5)); + /* Clear sticky bit. */ + mdio_read(dev, phy_num, 1); + /* If link beat has returned... */ + if (mdio_read(dev, phy_num, 1) & 0x0004) + netif_link_up(dev); + else + netif_link_down(dev); + check_duplex(dev); + } + if (intr_status & StatsMax) { + get_stats(dev); + } + /* Came close to underrunning the Tx FIFO, increase threshold. */ + if (intr_status & IntrTxDataLow) + writel(++np->tx_threshold, dev->base_addr + TxThreshold); + /* Ingore expected normal events, and handled abnormal events. */ + if ((intr_status & + ~(IntrAbnormalSummary|LinkChange|StatsMax|IntrTxDataLow| 0xFF01)) + && (np->msg_level & NETIF_MSG_DRV)) + printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n", + dev->name, intr_status); + /* Hmmmmm, it's not clear how to recover from PCI faults. */ + if (intr_status & IntrTxPCIErr) + np->stats.tx_fifo_errors++; + if (intr_status & IntrRxPCIErr) + np->stats.rx_fifo_errors++; +} + +static struct net_device_stats *get_stats(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + + /* This adapter architecture needs no SMP locks. */ +#if LINUX_VERSION_CODE > 0x20119 + np->stats.tx_bytes = readl(ioaddr + 0x57010); + np->stats.rx_bytes = readl(ioaddr + 0x57044); +#endif + np->stats.tx_packets = readl(ioaddr + 0x57000); + np->stats.tx_aborted_errors = + readl(ioaddr + 0x57024) + readl(ioaddr + 0x57028); + np->stats.tx_window_errors = readl(ioaddr + 0x57018); + np->stats.collisions = readl(ioaddr + 0x57004) + readl(ioaddr + 0x57008); + + /* The chip only need report frame silently dropped. */ + np->stats.rx_dropped += readw(ioaddr + RxDMAStatus); + writew(0, ioaddr + RxDMAStatus); + np->stats.rx_crc_errors = readl(ioaddr + 0x5703C); + np->stats.rx_frame_errors = readl(ioaddr + 0x57040); + np->stats.rx_length_errors = readl(ioaddr + 0x57058); + np->stats.rx_missed_errors = readl(ioaddr + 0x5707C); + + return &np->stats; +} + +/* The little-endian AUTODIN II ethernet CRC calculations. + A big-endian version is also available. + This is slow but compact code. Do not use this routine for bulk data, + use a table-based routine instead. + This is common code and should be moved to net/core/crc.c. + Chips may use the upper or lower CRC bits, and may reverse and/or invert + them. Select the endian-ness that results in minimal calculations. +*/ +static unsigned const ethernet_polynomial_le = 0xedb88320U; +static inline unsigned ether_crc_le(int length, unsigned char *data) +{ + unsigned int crc = ~0; /* Initial value. */ + while(--length >= 0) { + unsigned char current_octet = *data++; + int bit; + for (bit = 8; --bit >= 0; current_octet >>= 1) { + if ((crc ^ current_octet) & 1) { + crc >>= 1; + crc ^= ethernet_polynomial_le; + } else + crc >>= 1; + } + } + return crc; +} + +static void set_rx_mode(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + u32 rx_mode; + struct dev_mc_list *mclist; + int i; + + if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ + /* Unconditionally log net taps. */ + printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); + rx_mode = AcceptBroadcast|AcceptAllMulticast|AcceptAll|AcceptMyPhys; + } else if ((dev->mc_count > np->multicast_filter_limit) + || (dev->flags & IFF_ALLMULTI)) { + /* Too many to match, or accept all multicasts. */ + rx_mode = AcceptBroadcast|AcceptAllMulticast|AcceptMyPhys; + } else if (dev->mc_count <= 15) { + /* Use the 16 element perfect filter. */ + long filter_addr = ioaddr + 0x56000 + 1*16; + for (i = 1, mclist = dev->mc_list; mclist && i <= dev->mc_count; + i++, mclist = mclist->next) { + u16 *eaddrs = (u16 *)mclist->dmi_addr; + writew(cpu_to_be16(eaddrs[2]), filter_addr); filter_addr += 4; + writew(cpu_to_be16(eaddrs[1]), filter_addr); filter_addr += 4; + writew(cpu_to_be16(eaddrs[0]), filter_addr); filter_addr += 8; + } + while (i++ < 16) { + writew(0xffff, filter_addr); filter_addr += 4; + writew(0xffff, filter_addr); filter_addr += 4; + writew(0xffff, filter_addr); filter_addr += 8; + } + rx_mode = AcceptBroadcast | AcceptMyPhys; + } else { + /* Must use a multicast hash table. */ + long filter_addr; + u16 mc_filter[32]; /* Multicast hash filter */ + + memset(mc_filter, 0, sizeof(mc_filter)); + for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; + i++, mclist = mclist->next) { + set_bit(ether_crc_le(ETH_ALEN, mclist->dmi_addr) >> 23, mc_filter); + } + /* Clear the perfect filter list. */ + filter_addr = ioaddr + 0x56000 + 1*16; + for (i = 1; i < 16; i++) { + writew(0xffff, filter_addr); filter_addr += 4; + writew(0xffff, filter_addr); filter_addr += 4; + writew(0xffff, filter_addr); filter_addr += 8; + } + for (filter_addr=ioaddr + 0x56100, i=0; i < 32; filter_addr+= 16, i++){ + np->mc_filter[i] = mc_filter[i]; + writew(mc_filter[i], filter_addr); + } + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; + } + writel(rx_mode, ioaddr + RxFilterMode); +} + +/* + Handle user-level ioctl() calls. + We must use two numeric constants as the key because some clueless person + changed the value for the symbolic name. +*/ +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + u16 *data = (u16 *)&rq->ifr_data; + u32 *data32 = (void *)&rq->ifr_data; + + switch(cmd) { + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ + data[0] = np->phys[0] & 0x1f; + /* Fall Through */ + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + data[3] = mdio_read(dev, data[0] & 0x1f, data[1] & 0x1f); + return 0; + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (data[0] == np->phys[0]) { + u16 value = data[2]; + switch (data[1]) { + case 0: + /* Check for autonegotiation on or reset. */ + np->medialock = (value & 0x9000) ? 0 : 1; + if (np->medialock) + np->full_duplex = (value & 0x0100) ? 1 : 0; + break; + case 4: np->advertising = value; break; + } + check_duplex(dev); + } + mdio_write(dev, data[0] & 0x1f, data[1] & 0x1f, data[2]); + return 0; + case SIOCGPARAMS: + data32[0] = np->msg_level; + data32[1] = np->multicast_filter_limit; + data32[2] = np->max_interrupt_work; + data32[3] = np->rx_copybreak; + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + np->msg_level = data32[0]; + np->multicast_filter_limit = data32[1]; + np->max_interrupt_work = data32[2]; + np->rx_copybreak = data32[3]; + return 0; + default: + return -EOPNOTSUPP; + } +} + +static int netdev_close(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + netif_stop_tx_queue(dev); + + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk(KERN_DEBUG "%s: Shutting down ethercard, Intr status %4.4x.\n", + dev->name, (int)readl(ioaddr + IntrStatus)); + printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", + dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx); + } + + /* Disable interrupts by clearing the interrupt mask. */ + writel(0, ioaddr + IntrEnable); + + /* Stop the chip's Tx and Rx processes. */ + writel(0, ioaddr + GenCtrl); + + del_timer(&np->timer); + +#ifdef __i386__ + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk("\n"KERN_DEBUG" Tx ring at %8.8x:\n", + (int)virt_to_bus(np->tx_ring)); + for (i = 0; i < 8 /* TX_RING_SIZE is huge! */; i++) + printk(KERN_DEBUG " #%d desc. %8.8x %8.8x -> %8.8x.\n", + i, np->tx_ring[i].status, np->tx_ring[i].addr, + np->tx_done_q[i].status); + printk(KERN_DEBUG " Rx ring at %8.8x -> %p:\n", + (int)virt_to_bus(np->rx_ring), np->rx_done_q); + if (np->rx_done_q) + for (i = 0; i < 8 /* RX_RING_SIZE */; i++) { + printk(KERN_DEBUG " #%d desc. %8.8x -> %8.8x\n", + i, np->rx_ring[i].rxaddr, np->rx_done_q[i].status); + } + } +#endif /* __i386__ debugging only */ + + free_irq(dev->irq, dev); + + /* Free all the skbuffs in the Rx queue. */ + for (i = 0; i < RX_RING_SIZE; i++) { + np->rx_ring[i].rxaddr = 0xBADF00D0; /* An invalid address. */ + if (np->rx_skbuff[i]) { +#if LINUX_VERSION_CODE < 0x20100 + np->rx_skbuff[i]->free = 1; +#endif + dev_free_skb(np->rx_skbuff[i]); + } + np->rx_skbuff[i] = 0; + } + for (i = 0; i < TX_RING_SIZE; i++) { + if (np->tx_skbuff[i]) + dev_free_skb(np->tx_skbuff[i]); + np->tx_skbuff[i] = 0; + } + + MOD_DEC_USE_COUNT; + + return 0; +} + + +static int starfire_pwr_event(void *dev_instance, int event) +{ + struct net_device *dev = dev_instance; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_ATTACH: + MOD_INC_USE_COUNT; + break; + case DRV_SUSPEND: + /* Disable interrupts, stop Tx and Rx. */ + writel(0x0000, ioaddr + IntrEnable); + writel(0, ioaddr + GenCtrl); + break; + case DRV_RESUME: + /* This is incomplete: we must factor start_chip() out of open(). */ + writel(np->tx_threshold, ioaddr + TxThreshold); + writel(interrupt_mitigation, ioaddr + IntrTimerCtrl); + set_rx_mode(dev); + writel(np->intr_enable, ioaddr + IntrEnable); + writel(TxEnable|RxEnable, ioaddr + GenCtrl); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + /* Some, but not all, kernel versions close automatically. */ + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + unregister_netdev(dev); + release_region(dev->base_addr, pci_id_tbl[np->chip_id].io_size); +#ifndef USE_IO_OPS + iounmap((char *)dev->base_addr); +#endif + for (devp = &root_net_dev; *devp; devp = next) { + next = &((struct netdev_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (np->priv_addr) + kfree(np->priv_addr); + kfree(dev); + MOD_DEC_USE_COUNT; + break; + } + } + + return 0; +} + + +#ifdef MODULE +int init_module(void) +{ + if (debug >= NETIF_MSG_DRV) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + if (pci_drv_register(&starfire_drv_id, NULL)) { + printk(KERN_INFO " No Starfire adapters detected, driver not loaded.\n"); + return -ENODEV; + } + return 0; +} + +void cleanup_module(void) +{ + struct net_device *next_dev; + + pci_drv_unregister(&starfire_drv_id); + + /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ + while (root_net_dev) { + struct netdev_private *np = (void *)(root_net_dev->priv); + unregister_netdev(root_net_dev); + iounmap((char *)(root_net_dev->base_addr)); + next_dev = np->next_module; + if (np->tx_done_q) free_page((long)np->tx_done_q); + if (np->rx_done_q) free_page((long)np->rx_done_q); + if (np->priv_addr) kfree(np->priv_addr); + kfree(root_net_dev); + root_net_dev = next_dev; + } +} + +#endif /* MODULE */ + +/* + * Local variables: + * compile-command: "make KERNVER=`uname -r` starfire.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c starfire.c" + * simple-compile-command: "gcc -DMODULE -O6 -c starfire.c" + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ diff --git a/linux/src/drivers/net/sundance.c b/linux/src/drivers/net/sundance.c new file mode 100644 index 0000000..cb8dfe5 --- /dev/null +++ b/linux/src/drivers/net/sundance.c @@ -0,0 +1,1556 @@ +/* sundance.c: A Linux device driver for the Sundance ST201 "Alta". */ +/* + Written 1999-2003 by Donald Becker. + + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. + + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 410 Severn Ave., Suite 210 + Annapolis MD 21403 + + Support information and updates available at + http://www.scyld.com/network/sundance.html +*/ + +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"sundance.c:v1.11 2/4/2003 Written by Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/network/sundance.html\n"; +/* Updated to recommendations in pci-skeleton v2.12. */ + +/* Automatically extracted configuration info: +probe-func: sundance_probe +config-in: tristate 'Sundance ST201 "Alta" PCI Ethernet support' CONFIG_SUNDANCE +c-help-name: Sundance ST201 "Alta" PCI Ethernet support +c-help-symbol: CONFIG_SUNDANCE +c-help: This driver is for the Sundance ST201 "Alta" and Kendin KS8723, as +c-help: used on the D-Link DFE-550 and DFE-580. +c-help: Design information, usage details and updates are available from +c-help: http://www.scyld.com/network/sundance.html +*/ + +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ + +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; + +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ +static int max_interrupt_work = 20; + +/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). + The sundance uses a 64 element hash table based on the Ethernet CRC. */ +static int multicast_filter_limit = 32; + +/* Set the copy breakpoint for the copy-only-tiny-frames scheme. + Setting to > 1518 effectively disables this feature. + This chip can receive into any byte alignment buffers, so word-oriented + archs do not need a copy-align of the IP header. */ +static int rx_copybreak = 0; + +/* Used to pass the media type, etc. + Both 'options[]' and 'full_duplex[]' should exist for driver + interoperability. + The media type is usually passed in 'options[]'. + The default is autonegotation for speed and duplex. + This should rarely be overridden. + Use option values 0x10/0x20 for 10Mbps, 0x100,0x200 for 100Mbps. + Use option values 0x10 and 0x100 for forcing half duplex fixed speed. + Use option values 0x20 and 0x200 for forcing full duplex operation. +*/ +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; + +/* Operational parameters that are set at compile time. */ + +/* Ring sizes are a power of two only for compile efficiency. + The compiler will convert <unsigned>'%'<2^N> into a bit mask. + There must be at least five Tx entries for the tx_full hysteresis, and + more than 31 requires modifying the Tx status handling error recovery. + Leave a inactive gap in the Tx ring for better cache behavior. + Making the Tx ring too large decreases the effectiveness of channel + bonding and packet priority. + Large receive rings waste memory and impact buffer accounting. + The driver need to protect against interrupt latency and the kernel + not reserving enough available memory. +*/ +#define TX_RING_SIZE 16 +#define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */ +#define RX_RING_SIZE 32 + +/* Operational parameters that usually are not changed. */ +/* Time in jiffies before concluding the transmitter is hung. */ +#define TX_TIMEOUT (6*HZ) + +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. This is not a limit, + but a way to keep a consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 + +/* Set iff a MII transceiver on any interface requires mdio preamble. + This only set with older tranceivers, so the extra + code size of a per-interface flag is not worthwhile. */ +static char mii_preamble_required = 0; + +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif + +/* Include files, designed to support most kernel versions 2.0.0 and later. */ +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + +#include <linux/version.h> +#if defined(MODVERSIONS) +#include <linux/modversions.h> +#endif +#include <linux/module.h> + +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else +#include <linux/malloc.h> +#endif +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <asm/bitops.h> +#include <asm/io.h> + +#if LINUX_VERSION_CODE >= 0x20300 +#include <linux/spinlock.h> +#elif LINUX_VERSION_CODE >= 0x20200 +#include <asm/spinlock.h> +#endif + +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif + +/* Condensed operations for readability. */ +#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) +#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) + +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif + +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); +MODULE_DESCRIPTION("Sundance Alta Ethernet driver"); +MODULE_LICENSE("GPL"); +MODULE_PARM(max_interrupt_work, "i"); +MODULE_PARM(debug, "i"); +MODULE_PARM(rx_copybreak, "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(multicast_filter_limit, "i"); + +MODULE_PARM_DESC(debug, "Driver message level (0-31)"); +MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex"); +MODULE_PARM_DESC(max_interrupt_work, + "Driver maximum events handled per interrupt"); +MODULE_PARM_DESC(full_duplex, + "Non-zero to set forced full duplex (deprecated)."); +MODULE_PARM_DESC(rx_copybreak, + "Breakpoint in bytes for copy-only-tiny-frames"); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast addresses before switching to Rx-all-multicast"); + +/* + Theory of Operation + +I. Board Compatibility + +This driver is designed for the Sundance Technologies "Alta" ST201 chip. +The Kendin KS8723 is the same design with an integrated transceiver and +new quirks. + +II. Board-specific settings + +This is an all-in-one chip, so there are no board-specific settings. + +III. Driver operation + +IIIa. Ring buffers + +This driver uses two statically allocated fixed-size descriptor lists +formed into rings by a branch from the final descriptor to the beginning of +the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. +Some chips explicitly use only 2^N sized rings, while others use a +'next descriptor' pointer that the driver forms into rings. + +IIIb/c. Transmit/Receive Structure + +This driver uses a zero-copy receive and transmit scheme. +The driver allocates full frame size skbuffs for the Rx ring buffers at +open() time and passes the skb->data field to the chip as receive data +buffers. When an incoming frame is less than RX_COPYBREAK bytes long, +a fresh skbuff is allocated and the frame is copied to the new skbuff. +When the incoming frame is larger, the skbuff is passed directly up the +protocol stack. Buffers consumed this way are replaced by newly allocated +skbuffs in a later phase of receives. + +The RX_COPYBREAK value is chosen to trade-off the memory wasted by +using a full-sized skbuff for small frames vs. the copying costs of larger +frames. New boards are typically used in generously configured machines +and the underfilled buffers have negligible impact compared to the benefit of +a single allocation size, so the default value of zero results in never +copying packets. When copying is done, the cost is usually mitigated by using +a combined copy/checksum routine. Copying also preloads the cache, which is +most useful with small frames. + +A subtle aspect of the operation is that the IP header at offset 14 in an +ethernet frame isn't longword aligned for further processing. +Unaligned buffers are permitted by the Sundance hardware, so +frames are received into the skbuff at an offset of "+2", 16-byte aligning +the IP header. + +IIId. Synchronization + +The driver runs as two independent, single-threaded flows of control. One +is the send-packet routine, which enforces single-threaded use by the +dev->tbusy flag. The other thread is the interrupt handler, which is single +threaded by the hardware and interrupt handling software. + +The send packet thread has partial control over the Tx ring and 'dev->tbusy' +flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next +queue slot is empty, it clears the tbusy flag when finished otherwise it sets +the 'lp->tx_full' flag. + +The interrupt handler has exclusive control over the Rx ring and records stats +from the Tx ring. After reaping the stats, it marks the Tx queue entry as +empty by incrementing the dirty_tx mark. Iff the 'lp->tx_full' flag is set, it +clears both the tx_full and tbusy flags. + +IV. Notes + +IVb. References + +The Sundance ST201 datasheet, preliminary version. +The Kendin KS8723 datasheet, preliminary version. +http://www.scyld.com/expert/100mbps.html +http://www.scyld.com/expert/NWay.html + +IVc. Errata + +*/ + + + +/* Work-around for Kendin chip bugs. This will be reversed after tracking + down all of the chip access quirks in memory mode. */ +#ifndef USE_MEM_OPS +#define USE_IO_OPS 1 +#endif + +static void *sundance_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +static int sundance_pwr_event(void *dev_instance, int event); + +enum chip_capability_flags {CanHaveMII=1, KendinPktDropBug=2, }; +#ifdef USE_IO_OPS +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_IO | PCI_ADDR0) +#else +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_MEM | PCI_ADDR1) +#endif + +static struct pci_id_info pci_id_tbl[] = { + {"D-Link DFE-580TX (Kendin/Sundance ST201 Alta)", + {0x10021186, 0xffffffff, 0x10121186, 0xffffffff, 0x14, 0xff}, + PCI_IOTYPE, 128, CanHaveMII|KendinPktDropBug}, + {"D-Link DFE-580TX (Sundance ST201)", + {0x10021186, 0xffffffff, 0x10121186, 0xffffffff, }, + PCI_IOTYPE, 128, CanHaveMII|KendinPktDropBug}, + {"D-Link DFE-550FX 100baseFx (Sundance ST201)", + {0x10031186, 0xffffffff, }, + PCI_IOTYPE, 128, CanHaveMII|KendinPktDropBug}, + {"OEM Sundance Technology ST201", {0x10021186, 0xffffffff, }, + PCI_IOTYPE, 128, CanHaveMII}, + {"Sundance Technology Alta", {0x020113F0, 0xffffffff, }, + PCI_IOTYPE, 128, CanHaveMII}, + {0,}, /* 0 terminated list. */ +}; + +struct drv_id_info sundance_drv_id = { + "sundance", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, + sundance_probe1, sundance_pwr_event }; + +/* This driver was written to use PCI memory space, however x86-oriented + hardware often uses I/O space accesses. */ +#ifdef USE_IO_OPS +#undef readb +#undef readw +#undef readl +#undef writeb +#undef writew +#undef writel +#define readb inb +#define readw inw +#define readl inl +#define writeb outb +#define writew outw +#define writel outl +#endif + +/* Offsets to the device registers. + Unlike software-only systems, device drivers interact with complex hardware. + It's not useful to define symbolic names for every register bit in the + device. The name can only partially document the semantics and make + the driver longer and more difficult to read. + In general, only the important configuration values or bits changed + multiple times should be defined symbolically. +*/ +enum alta_offsets { + DMACtrl=0x00, TxListPtr=0x04, TxDMACtrl=0x08, TxDescPoll=0x0a, + RxDMAStatus=0x0c, RxListPtr=0x10, RxDMACtrl=0x14, RxDescPoll=0x16, + LEDCtrl=0x1a, ASICCtrl=0x30, + EEData=0x34, EECtrl=0x36, TxThreshold=0x3c, + FlashAddr=0x40, FlashData=0x44, WakeEvent=0x45, TxStatus=0x46, + DownCounter=0x48, IntrClear=0x4a, IntrEnable=0x4c, IntrStatus=0x4e, + MACCtrl0=0x50, MACCtrl1=0x52, StationAddr=0x54, + MaxFrameSize=0x5A, RxMode=0x5c, MIICtrl=0x5e, + MulticastFilter0=0x60, MulticastFilter1=0x64, + RxOctetsLow=0x68, RxOctetsHigh=0x6a, TxOctetsLow=0x6c, TxOctetsHigh=0x6e, + TxFramesOK=0x70, RxFramesOK=0x72, StatsCarrierError=0x74, + StatsLateColl=0x75, StatsMultiColl=0x76, StatsOneColl=0x77, + StatsTxDefer=0x78, RxMissed=0x79, StatsTxXSDefer=0x7a, StatsTxAbort=0x7b, + StatsBcastTx=0x7c, StatsBcastRx=0x7d, StatsMcastTx=0x7e, StatsMcastRx=0x7f, + /* Aliased and bogus values! */ + RxStatus=0x0c, +}; + +/* Bits in the interrupt status/mask registers. */ +enum intr_status_bits { + IntrSummary=0x0001, IntrPCIErr=0x0002, IntrMACCtrl=0x0008, + IntrTxDone=0x0004, IntrRxDone=0x0010, IntrRxStart=0x0020, + IntrDrvRqst=0x0040, + StatsMax=0x0080, LinkChange=0x0100, + IntrTxDMADone=0x0200, IntrRxDMADone=0x0400, +}; + +/* Bits in the RxMode register. */ +enum rx_mode_bits { + AcceptAllIPMulti=0x20, AcceptMultiHash=0x10, AcceptAll=0x08, + AcceptBroadcast=0x04, AcceptMulticast=0x02, AcceptMyPhys=0x01, +}; +/* Bits in MACCtrl. */ +enum mac_ctrl0_bits { + EnbFullDuplex=0x20, EnbRcvLargeFrame=0x40, + EnbFlowCtrl=0x100, EnbPassRxCRC=0x200, +}; +enum mac_ctrl1_bits { + StatsEnable=0x0020, StatsDisable=0x0040, StatsEnabled=0x0080, + TxEnable=0x0100, TxDisable=0x0200, TxEnabled=0x0400, + RxEnable=0x0800, RxDisable=0x1000, RxEnabled=0x2000, +}; + +/* The Rx and Tx buffer descriptors. + Using only 32 bit fields simplifies software endian correction. + This structure must be aligned, and should avoid spanning cache lines. +*/ +struct netdev_desc { + u32 next_desc; + u32 status; + struct desc_frag { u32 addr, length; } frag[1]; +}; + +/* Bits in netdev_desc.status */ +enum desc_status_bits { + DescOwn=0x8000, DescEndPacket=0x4000, DescEndRing=0x2000, + DescTxDMADone=0x10000, + LastFrag=0x80000000, DescIntrOnTx=0x8000, DescIntrOnDMADone=0x80000000, +}; + +#define PRIV_ALIGN 15 /* Required alignment mask */ +/* Use __attribute__((aligned (L1_CACHE_BYTES))) to maintain alignment + within the structure. */ +struct netdev_private { + /* Descriptor rings first for alignment. */ + struct netdev_desc rx_ring[RX_RING_SIZE]; + struct netdev_desc tx_ring[TX_RING_SIZE]; + struct net_device *next_module; /* Link for devices of this type. */ + void *priv_addr; /* Unaligned address for kfree */ + const char *product_name; + /* The addresses of receive-in-place skbuffs. */ + struct sk_buff* rx_skbuff[RX_RING_SIZE]; + /* The saved address of a sent-in-place packet/buffer, for later free(). */ + struct sk_buff* tx_skbuff[TX_RING_SIZE]; + struct net_device_stats stats; + struct timer_list timer; /* Media monitoring timer. */ + /* Frequently used values: keep some adjacent for cache effect. */ + int msg_level; + int chip_id, drv_flags; + struct pci_dev *pci_dev; + int max_interrupt_work; + + /* Note: Group variables for cache line effect. */ + struct netdev_desc *rx_head_desc; + unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ + unsigned int rx_buf_sz; /* Based on MTU+slack. */ + int rx_copybreak; + + spinlock_t txlock; /* Group with Tx control cache line. */ + struct netdev_desc *last_tx; /* Last Tx descriptor used. */ + unsigned int cur_tx, dirty_tx; + unsigned int tx_full:1; /* The Tx queue is full. */ + + /* These values keep track of the transceiver/media in use. */ + unsigned int full_duplex:1; /* Full-duplex operation requested. */ + unsigned int duplex_lock:1; + unsigned int medialock:1; /* Do not sense media. */ + unsigned int default_port; /* Last dev->if_port value. */ + /* Multicast and receive mode. */ + spinlock_t mcastlock; /* SMP lock multicast updates. */ + u16 mcast_filter[4]; + int multicast_filter_limit; + + /* MII transceiver section. */ + int mii_cnt; /* MII device addresses. */ + int link_status; + u16 advertising; /* NWay media advertisement */ + unsigned char phys[2]; /* MII device addresses. */ +}; + +/* The station address location in the EEPROM. */ +#define EEPROM_SA_OFFSET 0x10 + +static int eeprom_read(long ioaddr, int location); +static int mdio_read(struct net_device *dev, int phy_id, + unsigned int location); +static void mdio_write(struct net_device *dev, int phy_id, + unsigned int location, int value); +static int netdev_open(struct net_device *dev); +static void sundance_start(struct net_device *dev); +static int change_mtu(struct net_device *dev, int new_mtu); +static void check_duplex(struct net_device *dev); +static void netdev_timer(unsigned long data); +static void tx_timeout(struct net_device *dev); +static void init_ring(struct net_device *dev); +static int start_tx(struct sk_buff *skb, struct net_device *dev); +static void intr_handler(int irq, void *dev_instance, struct pt_regs *regs); +static void netdev_error(struct net_device *dev, int intr_status); +static int netdev_rx(struct net_device *dev); +static void netdev_error(struct net_device *dev, int intr_status); +static void set_rx_mode(struct net_device *dev); +static struct net_device_stats *get_stats(struct net_device *dev); +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +static int netdev_close(struct net_device *dev); + + + +/* A list of our installed devices, for removing the driver module. */ +static struct net_device *root_net_dev = NULL; + +#ifndef MODULE +int sundance_probe(struct net_device *dev) +{ + if (pci_drv_register(&sundance_drv_id, dev) < 0) + return -ENODEV; + if (debug >= NETIF_MSG_DRV) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return 0; +} +#endif + +static void *sundance_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int card_idx) +{ + struct net_device *dev; + struct netdev_private *np; + void *priv_mem; + int i, option = card_idx < MAX_UNITS ? options[card_idx] : 0; + + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; + + /* Perhaps NETIF_MSG_PROBE */ + printk(KERN_INFO "%s: %s at 0x%lx, ", + dev->name, pci_id_tbl[chip_idx].name, ioaddr); + + for (i = 0; i < 3; i++) + ((u16 *)dev->dev_addr)[i] = + le16_to_cpu(eeprom_read(ioaddr, i + EEPROM_SA_OFFSET)); + for (i = 0; i < 5; i++) + printk("%2.2x:", dev->dev_addr[i]); + printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq); + + /* Make certain elements e.g. descriptor lists are aligned. */ + priv_mem = kmalloc(sizeof(*np) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; + + /* All failure checks before this point. + We do a request_region() only to register /proc/ioports info. */ +#ifdef USE_IO_OPS + request_region(ioaddr, pci_id_tbl[chip_idx].io_size, dev->name); +#endif + + dev->base_addr = ioaddr; + dev->irq = irq; + + dev->priv = np = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); + memset(np, 0, sizeof(*np)); + np->priv_addr = priv_mem; + + np->next_module = root_net_dev; + root_net_dev = dev; + + np->pci_dev = pdev; + np->chip_id = chip_idx; + np->drv_flags = pci_id_tbl[chip_idx].drv_flags; + np->msg_level = (1 << debug) - 1; + np->rx_copybreak = rx_copybreak; + np->max_interrupt_work = max_interrupt_work; + np->multicast_filter_limit = multicast_filter_limit; + + if (dev->mem_start) + option = dev->mem_start; + + if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) + np->full_duplex = 1; + + if (np->full_duplex) + np->medialock = 1; + + /* The chip-specific entries in the device structure. */ + dev->open = &netdev_open; + dev->hard_start_xmit = &start_tx; + dev->stop = &netdev_close; + dev->get_stats = &get_stats; + dev->set_multicast_list = &set_rx_mode; + dev->do_ioctl = &mii_ioctl; + dev->change_mtu = &change_mtu; + + if (1) { + int phy, phy_idx = 0; + np->phys[0] = 1; /* Default setting */ + mii_preamble_required++; + for (phy = 1; phy < 32 && phy_idx < 4; phy++) { + int mii_status = mdio_read(dev, phy, 1); + if (mii_status != 0xffff && mii_status != 0x0000) { + np->phys[phy_idx++] = phy; + np->advertising = mdio_read(dev, phy, 4); + if ((mii_status & 0x0040) == 0) + mii_preamble_required++; + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO "%s: MII PHY found at address %d, status " + "0x%4.4x advertising %4.4x.\n", + dev->name, phy, mii_status, np->advertising); + } + } + mii_preamble_required--; + np->mii_cnt = phy_idx; + if (phy_idx == 0) + printk(KERN_INFO "%s: No MII transceiver found!, ASIC status %x\n", + dev->name, (int)readl(ioaddr + ASICCtrl)); + } + + /* Allow forcing the media type. */ + if (option > 0) { + if (option & 0x220) + np->full_duplex = 1; + np->default_port = option & 0x3ff; + if (np->default_port & 0x330) { + np->medialock = 1; + if (np->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO " Forcing %dMbs %s-duplex operation.\n", + (option & 0x300 ? 100 : 10), + (np->full_duplex ? "full" : "half")); + if (np->mii_cnt) + mdio_write(dev, np->phys[0], 0, + ((option & 0x300) ? 0x2000 : 0) | /* 100mbps? */ + (np->full_duplex ? 0x0100 : 0)); /* Full duplex? */ + } + } + + /* Reset the chip to erase previous misconfiguration. */ + if (np->msg_level & NETIF_MSG_MISC) + printk("ASIC Control is %x.\n", (int)readl(ioaddr + ASICCtrl)); + writel(0x007f0000 | readl(ioaddr + ASICCtrl), ioaddr + ASICCtrl); + if (np->msg_level & NETIF_MSG_MISC) + printk("ASIC Control is now %x.\n", (int)readl(ioaddr + ASICCtrl)); + + return dev; +} + + + +static int change_mtu(struct net_device *dev, int new_mtu) +{ + if ((new_mtu < 68) || (new_mtu > 8191)) /* Limited by RxDMAFrameLen */ + return -EINVAL; + if (netif_running(dev)) + return -EBUSY; + dev->mtu = new_mtu; + return 0; +} + +/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. */ +static int eeprom_read(long ioaddr, int location) +{ + int boguscnt = 2000; /* Typical 190 ticks. */ + writew(0x0200 | (location & 0xff), ioaddr + EECtrl); + do { + if (! (readw(ioaddr + EECtrl) & 0x8000)) { + return readw(ioaddr + EEData); + } + } while (--boguscnt > 0); + return 0; +} + +/* MII transceiver control section. + Read and write the MII registers using software-generated serial + MDIO protocol. See the MII specifications or DP83840A data sheet + for details. + + The maximum data clock rate is 2.5 Mhz. + The timing is decoupled from the processor clock by flushing the write + from the CPU write buffer with a following read, and using PCI + transaction time. */ +#define mdio_in(mdio_addr) readb(mdio_addr) +#define mdio_out(value, mdio_addr) writeb(value, mdio_addr) +#define mdio_delay(mdio_addr) readb(mdio_addr) + +enum mii_reg_bits { + MDIO_ShiftClk=0x0001, MDIO_Data=0x0002, MDIO_EnbOutput=0x0004, +}; +#define MDIO_EnbIn (0) +#define MDIO_WRITE0 (MDIO_EnbOutput) +#define MDIO_WRITE1 (MDIO_Data | MDIO_EnbOutput) + +/* Generate the preamble required for initial synchronization and + a few older transceivers. */ +static void mdio_sync(long mdio_addr) +{ + int bits = 32; + + /* Establish sync by sending at least 32 logic ones. */ + while (--bits >= 0) { + mdio_out(MDIO_WRITE1, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } +} + +static int mdio_read(struct net_device *dev, int phy_id, unsigned int location) +{ + long mdio_addr = dev->base_addr + MIICtrl; + int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location; + int i, retval = 0; + + if (mii_preamble_required) + mdio_sync(mdio_addr); + + /* Shift the read command bits out. */ + for (i = 15; i >= 0; i--) { + int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; + + mdio_out(dataval, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(dataval | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + /* Read the two transition, 16 data, and wire-idle bits. */ + for (i = 19; i > 0; i--) { + mdio_out(MDIO_EnbIn, mdio_addr); + mdio_delay(mdio_addr); + retval = (retval << 1) | ((mdio_in(mdio_addr) & MDIO_Data) ? 1 : 0); + mdio_out(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + return (retval>>1) & 0xffff; +} + +static void mdio_write(struct net_device *dev, int phy_id, + unsigned int location, int value) +{ + long mdio_addr = dev->base_addr + MIICtrl; + int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value; + int i; + + if (mii_preamble_required) + mdio_sync(mdio_addr); + + /* Shift the command bits out. */ + for (i = 31; i >= 0; i--) { + int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; + + mdio_out(dataval, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(dataval | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + /* Clear out extra bits. */ + for (i = 2; i > 0; i--) { + mdio_out(MDIO_EnbIn, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + return; +} + + +static int netdev_open(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + MOD_INC_USE_COUNT; + + if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; + return -EAGAIN; + } + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: netdev_open() irq %d.\n", + dev->name, dev->irq); + + init_ring(dev); + + if (dev->if_port == 0) + dev->if_port = np->default_port; + + np->full_duplex = np->duplex_lock; + np->mcastlock = (spinlock_t) SPIN_LOCK_UNLOCKED; + + sundance_start(dev); + netif_start_tx_queue(dev); + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Done netdev_open(), status: Rx %x Tx %x " + "MAC Control %x, %4.4x %4.4x.\n", + dev->name, (int)readl(ioaddr + RxStatus), + (int)readw(ioaddr + TxStatus), (int)readl(ioaddr + MACCtrl0), + (int)readw(ioaddr + MACCtrl1), (int)readw(ioaddr + MACCtrl0)); + + /* Set the timer to check for link beat. */ + init_timer(&np->timer); + np->timer.expires = jiffies + 3*HZ; + np->timer.data = (unsigned long)dev; + np->timer.function = &netdev_timer; /* timer handler */ + add_timer(&np->timer); + + return 0; +} + +static void sundance_start(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int i; + + /* No reports have indicated that we need to reset the chip. */ + + writel(virt_to_bus(&np->rx_ring[np->cur_rx % RX_RING_SIZE]), + ioaddr + RxListPtr); + /* The Tx list pointer is written as packets are queued. */ + + /* Station address must be written as 16 bit words with the Kendin chip. */ + for (i = 0; i < 6; i += 2) + writew((dev->dev_addr[i + 1] << 8) + dev->dev_addr[i], + ioaddr + StationAddr + i); + + np->link_status = readb(ioaddr + MIICtrl) & 0xE0; + writew((np->full_duplex || (np->link_status & 0x20)) ? 0x120 : 0, + ioaddr + MACCtrl0); + writew(dev->mtu + 14, ioaddr + MaxFrameSize); + if (dev->mtu > 2047) + writel(readl(ioaddr + ASICCtrl) | 0x0C, ioaddr + ASICCtrl); + + set_rx_mode(dev); + writew(0, ioaddr + DownCounter); + /* Set the chip to poll every N*320nsec. */ + writeb(100, ioaddr + RxDescPoll); + writeb(127, ioaddr + TxDescPoll); +#if 0 + if (np->drv_flags & KendinPktDropBug) + writeb(0x01, ioaddr + DebugCtrl1); +#endif + + /* Enable interrupts by setting the interrupt mask. */ + writew(IntrRxDMADone | IntrPCIErr | IntrDrvRqst | IntrTxDone + | StatsMax | LinkChange, ioaddr + IntrEnable); + writew(StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1); +} + +static void check_duplex(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int mii_reg5 = mdio_read(dev, np->phys[0], 5); + int negotiated = mii_reg5 & np->advertising; + int duplex; + + if (np->duplex_lock || mii_reg5 == 0xffff) + return; + duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040; + if (np->full_duplex != duplex) { + np->full_duplex = duplex; + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d " + "negotiated capability %4.4x.\n", dev->name, + duplex ? "full" : "half", np->phys[0], negotiated); + writew(duplex ? 0x20 : 0, ioaddr + MACCtrl0); + } +} + +static void netdev_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int next_tick = 10*HZ; + + if (np->msg_level & NETIF_MSG_TIMER) { + printk(KERN_DEBUG "%s: Media selection timer tick, intr status %4.4x, " + "Tx %x Rx %x.\n", + dev->name, (int)readw(ioaddr + IntrEnable), + (int)readw(ioaddr + TxStatus), (int)readl(ioaddr + RxStatus)); + } + /* Note: This does not catch a 0 or 1 element stuck queue. */ + if (netif_queue_paused(dev) && + np->cur_tx - np->dirty_tx > 1 && + (jiffies - dev->trans_start) > TX_TIMEOUT) { + tx_timeout(dev); + } + check_duplex(dev); + np->timer.expires = jiffies + next_tick; + add_timer(&np->timer); +} + +static void tx_timeout(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + printk(KERN_WARNING "%s: Transmit timed out, status %4.4x," + " resetting...\n", dev->name, (int)readw(ioaddr + TxStatus)); + +#ifdef __i386__ + if (np->msg_level & NETIF_MSG_TX_ERR) { + int i; + printk(KERN_DEBUG " Rx ring %8.8x: ", (int)np->rx_ring); + for (i = 0; i < RX_RING_SIZE; i++) + printk(" %8.8x", (unsigned int)np->rx_ring[i].status); + printk("\n"KERN_DEBUG" Tx ring %8.8x: ", (int)np->tx_ring); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" %8.8x", np->tx_ring[i].status); + printk("\n"); + } +#endif + + /* Perhaps we should reinitialize the hardware here. */ + dev->if_port = 0; + /* Stop and restart the chip's Tx processes . */ + + /* Trigger an immediate transmit demand. */ + writew(IntrRxDMADone | IntrPCIErr | IntrDrvRqst | IntrTxDone + | StatsMax | LinkChange, ioaddr + IntrEnable); + + dev->trans_start = jiffies; + np->stats.tx_errors++; + return; +} + + +/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ +static void init_ring(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + np->tx_full = 0; + np->cur_rx = np->cur_tx = 0; + np->dirty_rx = np->dirty_tx = 0; + + np->rx_buf_sz = dev->mtu + 20; + if (np->rx_buf_sz < PKT_BUF_SZ) + np->rx_buf_sz = PKT_BUF_SZ; + np->rx_head_desc = &np->rx_ring[0]; + + /* Initialize all Rx descriptors. */ + for (i = 0; i < RX_RING_SIZE; i++) { + np->rx_ring[i].next_desc = virt_to_le32desc(&np->rx_ring[i+1]); + np->rx_ring[i].status = 0; + np->rx_ring[i].frag[0].length = 0; + np->rx_skbuff[i] = 0; + } + /* Wrap the ring. */ + np->rx_ring[i-1].next_desc = virt_to_le32desc(&np->rx_ring[0]); + + /* Fill in the Rx buffers. Handle allocation failure gracefully. */ + for (i = 0; i < RX_RING_SIZE; i++) { + struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); + np->rx_skbuff[i] = skb; + if (skb == NULL) + break; + skb->dev = dev; /* Mark as being used by this device. */ + skb_reserve(skb, 2); /* 16 byte align the IP header. */ + np->rx_ring[i].frag[0].addr = virt_to_le32desc(skb->tail); + np->rx_ring[i].frag[0].length = cpu_to_le32(np->rx_buf_sz | LastFrag); + } + np->dirty_rx = (unsigned int)(i - RX_RING_SIZE); + + for (i = 0; i < TX_RING_SIZE; i++) { + np->tx_skbuff[i] = 0; + np->tx_ring[i].status = 0; + } + return; +} + +static int start_tx(struct sk_buff *skb, struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + struct netdev_desc *txdesc; + unsigned entry; + + /* Block a timer-based transmit from overlapping. */ + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + tx_timeout(dev); + return 1; + } + + /* Note: Ordering is important here, set the field with the + "ownership" bit last, and only then increment cur_tx. */ + + /* Calculate the next Tx descriptor entry. */ + entry = np->cur_tx % TX_RING_SIZE; + np->tx_skbuff[entry] = skb; + txdesc = &np->tx_ring[entry]; + + txdesc->next_desc = 0; + /* Note: disable the interrupt generation here before releasing. */ + txdesc->status = + cpu_to_le32((entry<<2) | DescIntrOnDMADone | DescIntrOnTx | 1); + txdesc->frag[0].addr = virt_to_le32desc(skb->data); + txdesc->frag[0].length = cpu_to_le32(skb->len | LastFrag); + if (np->last_tx) + np->last_tx->next_desc = virt_to_le32desc(txdesc); + np->last_tx = txdesc; + np->cur_tx++; + + /* On some architectures: explicitly flush cache lines here. */ + + if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1) { + np->tx_full = 1; + /* Check for a just-cleared queue. */ + if (np->cur_tx - (volatile unsigned int)np->dirty_tx + < TX_QUEUE_LEN - 2) { + np->tx_full = 0; + netif_unpause_tx_queue(dev); + } else + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); /* Typical path */ + + /* Side effect: The read wakes the potentially-idle transmit channel. */ + if (readl(dev->base_addr + TxListPtr) == 0) + writel(virt_to_bus(&np->tx_ring[entry]), dev->base_addr + TxListPtr); + + dev->trans_start = jiffies; + + if (np->msg_level & NETIF_MSG_TX_QUEUED) { + printk(KERN_DEBUG "%s: Transmit frame #%d len %d queued in slot %d.\n", + dev->name, np->cur_tx, skb->len, entry); + } + return 0; +} + +/* The interrupt handler does all of the Rx thread work and cleans up + after the Tx thread. */ +static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) +{ + struct net_device *dev = (struct net_device *)dev_instance; + struct netdev_private *np; + long ioaddr; + int boguscnt; + + ioaddr = dev->base_addr; + np = (struct netdev_private *)dev->priv; + boguscnt = np->max_interrupt_work; + + do { + int intr_status = readw(ioaddr + IntrStatus); + if ((intr_status & ~IntrRxDone) == 0 || intr_status == 0xffff) + break; + + writew(intr_status & (IntrRxDMADone | IntrPCIErr | + IntrDrvRqst |IntrTxDone|IntrTxDMADone | + StatsMax | LinkChange), + ioaddr + IntrStatus); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", + dev->name, intr_status); + + if (intr_status & IntrRxDMADone) + netdev_rx(dev); + + if (intr_status & IntrTxDone) { + int txboguscnt = 32; + int tx_status = readw(ioaddr + TxStatus); + while (tx_status & 0x80) { + if (np->msg_level & NETIF_MSG_TX_DONE) + printk("%s: Transmit status is %4.4x.\n", + dev->name, tx_status); + if (tx_status & 0x1e) { + if (np->msg_level & NETIF_MSG_TX_ERR) + printk("%s: Transmit error status %4.4x.\n", + dev->name, tx_status); + np->stats.tx_errors++; + if (tx_status & 0x10) np->stats.tx_fifo_errors++; +#ifdef ETHER_STATS + if (tx_status & 0x08) np->stats.collisions16++; +#else + if (tx_status & 0x08) np->stats.collisions++; +#endif + if (tx_status & 0x04) np->stats.tx_fifo_errors++; + if (tx_status & 0x02) np->stats.tx_window_errors++; + /* This reset has not been verified!. */ + if (tx_status & 0x10) { /* Reset the Tx. */ + writel(0x001c0000 | readl(ioaddr + ASICCtrl), + ioaddr + ASICCtrl); +#if 0 /* Do we need to reset the Tx pointer here? */ + writel(virt_to_bus(&np->tx_ring[np->dirty_tx]), + dev->base_addr + TxListPtr); +#endif + } + if (tx_status & 0x1e) /* Restart the Tx. */ + writew(TxEnable, ioaddr + MACCtrl1); + } + /* Yup, this is a documentation bug. It cost me *hours*. */ + writew(0, ioaddr + TxStatus); + if (--txboguscnt < 0) + break; + tx_status = readw(ioaddr + TxStatus); + } + } + for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { + int entry = np->dirty_tx % TX_RING_SIZE; + if ( ! (np->tx_ring[entry].status & cpu_to_le32(DescTxDMADone))) + break; + /* Free the original skb. */ + dev_free_skb_irq(np->tx_skbuff[entry]); + np->tx_skbuff[entry] = 0; + } + if (np->tx_full && np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) { + /* The ring is no longer full, allow new TX entries. */ + np->tx_full = 0; + netif_resume_tx_queue(dev); + } + + /* Abnormal error summary/uncommon events handlers. */ + if (intr_status & (IntrDrvRqst | IntrPCIErr | LinkChange | StatsMax)) + netdev_error(dev, intr_status); + + if (--boguscnt < 0) { + int intr_clear = readw(ioaddr + IntrClear); + get_stats(dev); + printk(KERN_WARNING "%s: Too much work at interrupt, " + "status=0x%4.4x / 0x%4.4x .. 0x%4.4x.\n", + dev->name, intr_status, intr_clear, + (int)readw(ioaddr + IntrClear)); + /* Re-enable us in 3.2msec. */ + writew(1000, ioaddr + DownCounter); + writew(IntrDrvRqst, ioaddr + IntrEnable); + break; + } + } while (1); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", + dev->name, (int)readw(ioaddr + IntrStatus)); + + return; +} + +/* This routine is logically part of the interrupt handler, but separated + for clarity and better register allocation. */ +static int netdev_rx(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int entry = np->cur_rx % RX_RING_SIZE; + int boguscnt = np->dirty_rx + RX_RING_SIZE - np->cur_rx; + + if (np->msg_level & NETIF_MSG_RX_STATUS) { + printk(KERN_DEBUG " In netdev_rx(), entry %d status %4.4x.\n", + entry, np->rx_ring[entry].status); + } + + /* If EOP is set on the next entry, it's a new packet. Send it up. */ + while (np->rx_head_desc->status & cpu_to_le32(DescOwn)) { + struct netdev_desc *desc = np->rx_head_desc; + u32 frame_status = le32_to_cpu(desc->status); + int pkt_len = frame_status & 0x1fff; /* Chip omits the CRC. */ + + if (np->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n", + frame_status); + if (--boguscnt < 0) + break; + if (frame_status & 0x001f4000) { + /* There was a error. */ + if (np->msg_level & NETIF_MSG_RX_ERR) + printk(KERN_DEBUG " netdev_rx() Rx error was %8.8x.\n", + frame_status); + np->stats.rx_errors++; + if (frame_status & 0x00100000) np->stats.rx_length_errors++; + if (frame_status & 0x00010000) np->stats.rx_fifo_errors++; + if (frame_status & 0x00060000) np->stats.rx_frame_errors++; + if (frame_status & 0x00080000) np->stats.rx_crc_errors++; + if (frame_status & 0x00100000) { + printk(KERN_WARNING "%s: Oversized Ethernet frame," + " status %8.8x.\n", + dev->name, frame_status); + } + } else { + struct sk_buff *skb; + +#ifndef final_version + if (np->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d" + ", bogus_cnt %d.\n", + pkt_len, boguscnt); +#endif + /* Check if the packet is long enough to accept without copying + to a minimally-sized skbuff. */ + if (pkt_len < np->rx_copybreak + && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { + skb->dev = dev; + skb_reserve(skb, 2); /* 16 byte align the IP header */ + eth_copy_and_sum(skb, np->rx_skbuff[entry]->tail, pkt_len, 0); + skb_put(skb, pkt_len); + } else { + skb_put(skb = np->rx_skbuff[entry], pkt_len); + np->rx_skbuff[entry] = NULL; + } + skb->protocol = eth_type_trans(skb, dev); + /* Note: checksum -> skb->ip_summed = CHECKSUM_UNNECESSARY; */ + netif_rx(skb); + dev->last_rx = jiffies; + } + entry = (++np->cur_rx) % RX_RING_SIZE; + np->rx_head_desc = &np->rx_ring[entry]; + } + + /* Refill the Rx ring buffers. */ + for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) { + struct sk_buff *skb; + entry = np->dirty_rx % RX_RING_SIZE; + if (np->rx_skbuff[entry] == NULL) { + skb = dev_alloc_skb(np->rx_buf_sz); + np->rx_skbuff[entry] = skb; + if (skb == NULL) + break; /* Better luck next round. */ + skb->dev = dev; /* Mark as being used by this device. */ + skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ + np->rx_ring[entry].frag[0].addr = virt_to_le32desc(skb->tail); + } + /* Perhaps we need not reset this field. */ + np->rx_ring[entry].frag[0].length = + cpu_to_le32(np->rx_buf_sz | LastFrag); + np->rx_ring[entry].status = 0; + } + + /* No need to restart Rx engine, it will poll. */ + return 0; +} + +static void netdev_error(struct net_device *dev, int intr_status) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + + if (intr_status & IntrDrvRqst) { + /* Stop the down counter and turn interrupts back on. */ + printk(KERN_WARNING "%s: Turning interrupts back on.\n", dev->name); + writew(0, ioaddr + DownCounter); + writew(IntrRxDMADone | IntrPCIErr | IntrDrvRqst | + IntrTxDone | StatsMax | LinkChange, ioaddr + IntrEnable); + } + if (intr_status & LinkChange) { + int new_status = readb(ioaddr + MIICtrl) & 0xE0; + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_NOTICE "%s: Link changed: Autonegotiation advertising" + " %4.4x partner %4.4x.\n", dev->name, + mdio_read(dev, np->phys[0], 4), + mdio_read(dev, np->phys[0], 5)); + if ((np->link_status ^ new_status) & 0x80) { + if (new_status & 0x80) + netif_link_up(dev); + else + netif_link_down(dev); + } + np->link_status = new_status; + check_duplex(dev); + } + if (intr_status & StatsMax) { + get_stats(dev); + } + if (intr_status & IntrPCIErr) { + printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n", + dev->name, intr_status); + /* We must do a global reset of DMA to continue. */ + } +} + +static struct net_device_stats *get_stats(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + if (readw(ioaddr + StationAddr) == 0xffff) + return &np->stats; + + /* We do not spinlock statistics. + A window only exists if we have non-atomic adds, the error counts + are typically zero, and statistics are non-critical. */ + np->stats.rx_missed_errors += readb(ioaddr + RxMissed); + np->stats.tx_packets += readw(ioaddr + TxFramesOK); + np->stats.rx_packets += readw(ioaddr + RxFramesOK); + np->stats.collisions += readb(ioaddr + StatsLateColl); + np->stats.collisions += readb(ioaddr + StatsMultiColl); + np->stats.collisions += readb(ioaddr + StatsOneColl); + readb(ioaddr + StatsCarrierError); + readb(ioaddr + StatsTxDefer); + for (i = StatsTxXSDefer; i <= StatsMcastRx; i++) + readb(ioaddr + i); +#if LINUX_VERSION_CODE > 0x20127 + np->stats.tx_bytes += readw(ioaddr + TxOctetsLow); + np->stats.tx_bytes += readw(ioaddr + TxOctetsHigh) << 16; + np->stats.rx_bytes += readw(ioaddr + RxOctetsLow); + np->stats.rx_bytes += readw(ioaddr + RxOctetsHigh) << 16; +#else + readw(ioaddr + TxOctetsLow); + readw(ioaddr + TxOctetsHigh); + readw(ioaddr + RxOctetsLow); + readw(ioaddr + RxOctetsHigh); +#endif + + return &np->stats; +} + +/* The little-endian AUTODIN II ethernet CRC calculations. + A big-endian version is also available. + This is slow but compact code. Do not use this routine for bulk data, + use a table-based routine instead. + This is common code and should be moved to net/core/crc.c. + Chips may use the upper or lower CRC bits, and may reverse and/or invert + them. Select the endian-ness that results in minimal calculations. +*/ +static unsigned const ethernet_polynomial_le = 0xedb88320U; +static inline unsigned ether_crc_le(int length, unsigned char *data) +{ + unsigned int crc = ~0; /* Initial value. */ + while(--length >= 0) { + unsigned char current_octet = *data++; + int bit; + for (bit = 8; --bit >= 0; current_octet >>= 1) { + if ((crc ^ current_octet) & 1) { + crc >>= 1; + crc ^= ethernet_polynomial_le; + } else + crc >>= 1; + } + } + return crc; +} + +static void set_rx_mode(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + u16 mc_filter[4]; /* Multicast hash filter */ + u32 rx_mode; + int i; + + if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ + /* Unconditionally log net taps. */ + printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); + memset(mc_filter, ~0, sizeof(mc_filter)); + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptAll | AcceptMyPhys; + } else if ((dev->mc_count > np->multicast_filter_limit) + || (dev->flags & IFF_ALLMULTI)) { + /* Too many to match, or accept all multicasts. */ + memset(mc_filter, 0xff, sizeof(mc_filter)); + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; + } else if (dev->mc_count) { + struct dev_mc_list *mclist; + memset(mc_filter, 0, sizeof(mc_filter)); + for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; + i++, mclist = mclist->next) { + set_bit(ether_crc_le(ETH_ALEN, mclist->dmi_addr) & 0x3f, + mc_filter); + } + rx_mode = AcceptBroadcast | AcceptMultiHash | AcceptMyPhys; + } else { + writeb(AcceptBroadcast | AcceptMyPhys, ioaddr + RxMode); + return; + } + for (i = 0; i < 4; i++) + writew(mc_filter[i], ioaddr + MulticastFilter0 + i*2); + writeb(rx_mode, ioaddr + RxMode); +} + +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + u16 *data = (u16 *)&rq->ifr_data; + u32 *data32 = (void *)&rq->ifr_data; + + switch(cmd) { + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ + data[0] = np->phys[0] & 0x1f; + /* Fall Through */ + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + data[3] = mdio_read(dev, data[0] & 0x1f, data[1] & 0x1f); + return 0; + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (data[0] == np->phys[0]) { + u16 value = data[2]; + switch (data[1]) { + case 0: + /* Check for autonegotiation on or reset. */ + np->medialock = (value & 0x9000) ? 0 : 1; + if (np->medialock) + np->full_duplex = (value & 0x0100) ? 1 : 0; + break; + case 4: np->advertising = value; break; + } + /* Perhaps check_duplex(dev), depending on chip semantics. */ + } + mdio_write(dev, data[0] & 0x1f, data[1] & 0x1f, data[2]); + return 0; + case SIOCGPARAMS: + data32[0] = np->msg_level; + data32[1] = np->multicast_filter_limit; + data32[2] = np->max_interrupt_work; + data32[3] = np->rx_copybreak; + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + np->msg_level = data32[0]; + np->multicast_filter_limit = data32[1]; + np->max_interrupt_work = data32[2]; + np->rx_copybreak = data32[3]; + return 0; + default: + return -EOPNOTSUPP; + } +} + +static int sundance_pwr_event(void *dev_instance, int event) +{ + struct net_device *dev = dev_instance; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_ATTACH: + MOD_INC_USE_COUNT; + break; + case DRV_SUSPEND: + /* Disable interrupts, stop Tx and Rx. */ + writew(0x0000, ioaddr + IntrEnable); + writew(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1); + break; + case DRV_RESUME: + sundance_start(dev); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + /* Some, but not all, kernel versions close automatically. */ + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + unregister_netdev(dev); + release_region(dev->base_addr, pci_id_tbl[np->chip_id].io_size); +#ifndef USE_IO_OPS + iounmap((char *)dev->base_addr); +#endif + for (devp = &root_net_dev; *devp; devp = next) { + next = &((struct netdev_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (np->priv_addr) + kfree(np->priv_addr); + kfree(dev); + MOD_DEC_USE_COUNT; + break; + } + case DRV_PWR_WakeOn: + writeb(readb(ioaddr + WakeEvent) | 2, ioaddr + WakeEvent); + /* Fall through. */ + case DRV_PWR_DOWN: + case DRV_PWR_UP: + acpi_set_pwr_state(np->pci_dev, event==DRV_PWR_UP ? ACPI_D0:ACPI_D3); + break; + default: + return -1; + } + + return 0; +} + +static int netdev_close(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + netif_stop_tx_queue(dev); + + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %2.2x " + "Rx %4.4x Int %2.2x.\n", + dev->name, (int)readw(ioaddr + TxStatus), + (int)readl(ioaddr + RxStatus), (int)readw(ioaddr + IntrStatus)); + printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", + dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx); + } + + /* Disable interrupts by clearing the interrupt mask. */ + writew(0x0000, ioaddr + IntrEnable); + + /* Stop the chip's Tx and Rx processes. */ + writew(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1); + + del_timer(&np->timer); + +#ifdef __i386__ + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk("\n"KERN_DEBUG" Tx ring at %8.8x:\n", + (int)virt_to_bus(np->tx_ring)); + for (i = 0; i < TX_RING_SIZE; i++) + printk(" #%d desc. %4.4x %8.8x %8.8x.\n", + i, np->tx_ring[i].status, np->tx_ring[i].frag[0].addr, + np->tx_ring[i].frag[0].length); + printk("\n"KERN_DEBUG " Rx ring %8.8x:\n", + (int)virt_to_bus(np->rx_ring)); + for (i = 0; i < /*RX_RING_SIZE*/4 ; i++) { + printk(KERN_DEBUG " #%d desc. %4.4x %4.4x %8.8x\n", + i, np->rx_ring[i].status, np->rx_ring[i].frag[0].addr, + np->rx_ring[i].frag[0].length); + } + } +#endif /* __i386__ debugging only */ + + free_irq(dev->irq, dev); + + /* Free all the skbuffs in the Rx queue. */ + for (i = 0; i < RX_RING_SIZE; i++) { + np->rx_ring[i].status = 0; + np->rx_ring[i].frag[0].addr = 0xBADF00D0; /* An invalid address. */ + if (np->rx_skbuff[i]) { +#if LINUX_VERSION_CODE < 0x20100 + np->rx_skbuff[i]->free = 1; +#endif + dev_free_skb(np->rx_skbuff[i]); + } + np->rx_skbuff[i] = 0; + } + for (i = 0; i < TX_RING_SIZE; i++) { + if (np->tx_skbuff[i]) + dev_free_skb(np->tx_skbuff[i]); + np->tx_skbuff[i] = 0; + } + + MOD_DEC_USE_COUNT; + + return 0; +} + + +#ifdef MODULE +int init_module(void) +{ + if (debug >= NETIF_MSG_DRV) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return pci_drv_register(&sundance_drv_id, NULL); +} + +void cleanup_module(void) +{ + struct net_device *next_dev; + + pci_drv_unregister(&sundance_drv_id); + + /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ + while (root_net_dev) { + struct netdev_private *np = (void *)(root_net_dev->priv); + unregister_netdev(root_net_dev); +#ifdef USE_IO_OPS + release_region(root_net_dev->base_addr, + pci_id_tbl[np->chip_id].io_size); +#else + iounmap((char *)root_net_dev->base_addr); +#endif + next_dev = np->next_module; + if (np->priv_addr) + kfree(np->priv_addr); + kfree(root_net_dev); + root_net_dev = next_dev; + } +} + +#endif /* MODULE */ + +/* + * Local variables: + * compile-command: "make KERNVER=`uname -r` sundance.o" + * compile-cmd1: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c sundance.c" + * simple-compile-command: "gcc -DMODULE -O6 -c sundance.c" + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ diff --git a/linux/src/drivers/net/tulip.c b/linux/src/drivers/net/tulip.c index 4140350..2a20301 100644 --- a/linux/src/drivers/net/tulip.c +++ b/linux/src/drivers/net/tulip.c @@ -1,30 +1,39 @@ -/* tulip.c: A DEC 21040-family ethernet driver for Linux. */ +/* tulip.c: A DEC 21040 family ethernet driver for Linux. */ /* - Written/copyright 1994-1999 by Donald Becker. + Written/copyright 1994-2003 by Donald Becker. - This software may be used and distributed according to the terms - of the GNU Public License, incorporated herein by reference. + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. This driver is for the Digital "Tulip" Ethernet adapter interface. It should work with most DEC 21*4*-based chips/ethercards, as well as with work-alike chips from Lite-On (PNIC) and Macronix (MXIC) and ASIX. - The author may be reached as becker@CESDIS.gsfc.nasa.gov, or C/O - Center of Excellence in Space Data and Information Sciences - Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771 + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 914 Bay Ridge Road, Suite 220 + Annapolis MD 21403 Support and updates available at - http://cesdis.gsfc.nasa.gov/linux/drivers/tulip.html - - This driver also contains updates by Wolfgang Walter and others. - For this specific driver variant please use linux-kernel for - bug reports. + http://www.scyld.com/network/tulip.html */ +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"tulip.c:v0.97 7/22/2003 Written by Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/network/tulip.html\n"; + #define SMP_CHECK -static const char version[] = "tulip.c:v0.91g-ppc 7/16/99 becker@cesdis.gsfc.nasa.gov\n"; -/* A few user-configurable values. */ +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ + +static int debug = 2; /* Message enable: 0..31 = no..all messages. */ /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ static int max_interrupt_work = 25; @@ -36,11 +45,14 @@ static int options[MAX_UNITS] = {0, }; static int mtu[MAX_UNITS] = {0, }; /* Jumbo MTU for interfaces. */ /* The possible media types that can be set in options[] are: */ -static const char * const medianame[] = { +#define MEDIA_MASK 31 +static const char * const medianame[32] = { "10baseT", "10base2", "AUI", "100baseTx", - "10baseT-FD", "100baseTx-FD", "100baseT4", "100baseFx", - "100baseFx-FD", "MII 10baseT", "MII 10baseT-FD", "MII", - "10baseT(forced)", "MII 100baseTx", "MII 100baseTx-FD", "MII 100baseT4", + "10baseT-FDX", "100baseTx-FDX", "100baseT4", "100baseFx", + "100baseFx-FDX", "MII 10baseT", "MII 10baseT-FDX", "MII", + "10baseT(forced)", "MII 100baseTx", "MII 100baseTx-FDX", "MII 100baseT4", + "MII 100baseFx-HDX", "MII 100baseFx-FDX", "Home-PNA 1Mbps", "Invalid-19", + "","","","", "","","","", "","","","Transceiver reset", }; /* Set if the PCI BIOS detects the chips on a multiport board backwards. */ @@ -50,15 +62,8 @@ static int reverse_probe = 1; static int reverse_probe = 0; #endif -/* Keep the ring sizes a power of two for efficiency. - Making the Tx ring too large decreases the effectiveness of channel - bonding and packet priority. - There are no ill effects from too-large receive rings. */ -#define TX_RING_SIZE 16 -#define RX_RING_SIZE 32 - /* Set the copy breakpoint for the copy-only-tiny-buffer Rx structure. */ -#ifdef __alpha__ +#ifdef __alpha__ /* Always copy to aligned IP headers. */ static int rx_copybreak = 1518; #else static int rx_copybreak = 100; @@ -77,50 +82,85 @@ static int rx_copybreak = 100; ToDo: Non-Intel setting could be better. */ -#if defined(__alpha__) +#if defined(__alpha__) || defined(__x86_64) || defined(__ia64) static int csr0 = 0x01A00000 | 0xE000; #elif defined(__i386__) || defined(__powerpc__) || defined(__sparc__) +/* Do *not* rely on hardware endian correction for big-endian machines! */ static int csr0 = 0x01A00000 | 0x8000; #else #warning Processor architecture undefined! static int csr0 = 0x00A00000 | 0x4800; #endif +/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). + Typical is a 64 element hash table based on the Ethernet CRC. + This value does not apply to the 512 bit table chips. +*/ +static int multicast_filter_limit = 32; + +/* Operational parameters that are set at compile time. */ + +/* Keep the descriptor ring sizes a power of two for efficiency. + The Tx queue length limits transmit packets to a portion of the available + ring entries. It should be at least one element less to allow multicast + filter setup frames to be queued. It must be at least four for hysteresis. + Making the Tx queue too long decreases the effectiveness of channel + bonding and packet priority. + Large receive rings waste memory and confound network buffer limits. + These values have been carefully studied: changing these might mask a + problem, it won't fix it. +*/ +#define TX_RING_SIZE 16 +#define TX_QUEUE_LEN 10 +#define RX_RING_SIZE 32 + /* Operational parameters that usually are not changed. */ /* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT (4*HZ) -#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ +#define TX_TIMEOUT (6*HZ) +/* Preferred skbuff allocation size. */ +#define PKT_BUF_SZ 1536 /* This is a mysterious value that can be written to CSR11 in the 21040 (only) to support a pre-NWay full-duplex signaling mechanism using short frames. No one knows what it should be, but if left at its default value some 10base2(!) packets trigger a full-duplex-request interrupt. */ #define FULL_DUPLEX_MAGIC 0x6969 -#if !defined(__OPTIMIZE__) || !defined(__KERNEL__) +/* The include file section. We start by doing checks and fix-ups for + missing compile flags. */ +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) #warning You must compile this file with the correct options! #warning See the last lines of the source file. #error You must compile this driver with "-O". #endif #include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(CONFIG_MODVERSIONS) && defined(MODULE) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + #include <linux/version.h> -#ifdef MODULE -#ifdef MODVERSIONS +#if defined(MODVERSIONS) #include <linux/modversions.h> #endif #include <linux/module.h> -#else -#define MOD_INC_USE_COUNT -#define MOD_DEC_USE_COUNT -#endif + #include <linux/kernel.h> -#include <linux/sched.h> #include <linux/string.h> #include <linux/timer.h> #include <linux/errno.h> #include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else #include <linux/malloc.h> +#endif #include <linux/interrupt.h> #include <linux/pci.h> #include <linux/netdevice.h> @@ -131,12 +171,23 @@ static int csr0 = 0x00A00000 | 0x4800; #include <asm/io.h> #include <asm/unaligned.h> -/* Kernel compatibility defines, some common to David Hind's PCMCIA package. - This is only in the support-all-kernels source code. */ +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif -#if defined(MODULE) && LINUX_VERSION_CODE > 0x20115 -MODULE_AUTHOR("Donald Becker <becker@cesdis.gsfc.nasa.gov>"); +/* Condensed operations for readability. */ +#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) + +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif + +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); MODULE_DESCRIPTION("Digital 21*4* Tulip ethernet driver"); +MODULE_LICENSE("GPL"); MODULE_PARM(debug, "i"); MODULE_PARM(max_interrupt_work, "i"); MODULE_PARM(reverse_probe, "i"); @@ -144,54 +195,42 @@ MODULE_PARM(rx_copybreak, "i"); MODULE_PARM(csr0, "i"); MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(multicast_filter_limit, "i"); +#ifdef MODULE_PARM_DESC +MODULE_PARM_DESC(debug, "Tulip driver message level (0-31)"); +MODULE_PARM_DESC(options, + "Tulip: force transceiver type or fixed speed+duplex"); +MODULE_PARM_DESC(max_interrupt_work, + "Tulip driver maximum events handled per interrupt"); +MODULE_PARM_DESC(full_duplex, "Tulip: non-zero to set forced full duplex."); +MODULE_PARM_DESC(rx_copybreak, + "Tulip breakpoint in bytes for copy-only-tiny-frames"); +MODULE_PARM_DESC(multicast_filter_limit, + "Tulip breakpoint for switching to Rx-all-multicast"); +MODULE_PARM_DESC(reverse_probe, "Search PCI devices in reverse order to work " + "around misordered multiport NICS."); +MODULE_PARM_DESC(csr0, "Special setting for the CSR0 PCI bus parameter " + "register."); #endif -#define RUN_AT(x) (jiffies + (x)) - -#if (LINUX_VERSION_CODE >= 0x20100) -static char kernel_version[] = UTS_RELEASE; -#endif - -#if LINUX_VERSION_CODE < 0x20123 -#define hard_smp_processor_id() smp_processor_id() -#define test_and_set_bit(val, addr) set_bit(val, addr) -#define le16_to_cpu(val) (val) -#define le32_to_cpu(val) (val) -#define cpu_to_le32(val) (val) +/* This driver was originally written to use I/O space access, but now + uses memory space by default. Override this this with -DUSE_IO_OPS. */ +#if (LINUX_VERSION_CODE < 0x20100) || ! defined(MODULE) +#define USE_IO_OPS #endif -#if LINUX_VERSION_CODE <= 0x20139 -#define net_device_stats enet_statistics -#else -#define NETSTATS_VER2 -#endif -#if LINUX_VERSION_CODE < 0x20155 -/* Grrrr, the PCI code changed, but did not consider CardBus... */ -#include <linux/bios32.h> -#define PCI_SUPPORT_VER1 -#else -#define PCI_SUPPORT_VER2 -#endif -#if LINUX_VERSION_CODE < 0x20159 -#define dev_free_skb(skb) dev_kfree_skb(skb, FREE_WRITE); -#else -#define dev_free_skb(skb) dev_kfree_skb(skb); -#endif -#if ! defined(CAP_NET_ADMIN) -#define capable(CAP_XXX) (suser()) -#endif -#if ! defined(HAS_NETIF_QUEUE) -#define netif_wake_queue(dev) mark_bh(NET_BH); -#endif - -/* Condensed operations for readability. */ -#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) -#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) - -#define tulip_debug debug -#ifdef TULIP_DEBUG -static int tulip_debug = TULIP_DEBUG; -#else -static int tulip_debug = 1; +#ifndef USE_IO_OPS +#undef inb +#undef inw +#undef inl +#undef outb +#undef outw +#undef outl +#define inb readb +#define inw readw +#define inl readl +#define outb writeb +#define outw writew +#define outl writel #endif /* @@ -203,7 +242,7 @@ This device driver is designed for the DECchip "Tulip", Digital's single-chip ethernet controllers for PCI. Supported members of the family are the 21040, 21041, 21140, 21140A, 21142, and 21143. Similar work-alike chips from Lite-On, Macronics, ASIX, Compex and other listed below are also -supported. +supported. These chips are used on at least 140 unique PCI board designs. The great number of chips and board designs supported is the reason for the @@ -221,7 +260,7 @@ Some boards have EEPROMs tables with default media entry. The factory default is usually "autoselect". This should only be overridden when using transceiver connections without link beat e.g. 10base2 or AUI, or (rarely!) for forcing full-duplex when used with old link partners that do not do -autonegotiation. +autonegotiation. III. Driver operation @@ -244,7 +283,7 @@ that we are pre-loading the cache with immediately useful header information). For large frames the copying cost is non-trivial, and the larger copy might flush the cache of useful data. A subtle aspect of this choice is that the Tulip only receives into longword aligned buffers, thus -the IP header at offset 14 isn't longword aligned for further processing. +the IP header at offset 14 is not longword aligned for further processing. Copied frames are put into the new skbuff at an offset of "+2", thus copying has the beneficial effect of aligning the IP header and preloading the cache. @@ -256,13 +295,13 @@ dev->tbusy flag. The other thread is the interrupt handler, which is single threaded by the hardware and other software. The send packet thread has partial control over the Tx ring and 'dev->tbusy' -flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next +flag. It sets the tbusy flag whenever it is queuing a Tx packet. If the next queue slot is empty, it clears the tbusy flag when finished otherwise it sets the 'tp->tx_full' flag. The interrupt handler has exclusive control over the Rx ring and records stats -from the Tx ring. (The Tx-done interrupt can't be selectively turned off, so -we can't avoid the interrupt overhead by having the Tx routine reap the Tx +from the Tx ring. (The Tx-done interrupt can not be selectively turned off, so +we cannot avoid the interrupt overhead by having the Tx routine reap the Tx stats.) After reaping the stats, it marks the queue entry as empty by setting the 'base' to zero. Iff the 'tp->tx_full' flag is set, it clears both the tx_full and tbusy flags. @@ -275,7 +314,7 @@ Znyx provided a four-port card for testing. IVb. References -http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html +http://scyld.com/expert/NWay.html http://www.digital.com (search for current 21*4* datasheets and "21X4 SROM") http://www.national.com/pf/DP/DP83840A.html http://www.asix.com.tw/pmac.htm @@ -290,73 +329,138 @@ register of the set CSR12-15 written. Hmmm, now how is that possible? The DEC SROM format is very badly designed not precisely defined, leading to part of the media selection junkheap below. Some boards do not have EEPROM media tables and need to be patched up. Worse, other boards use the DEC -design kit media table when it isn't correct for their board. +design kit media table when it is not correct for their design. We cannot use MII interrupts because there is no defined GPIO pin to attach them. The MII transceiver status is polled using an kernel timer. */ -static struct device * -tulip_probe1(int pci_bus, int pci_devfn, struct device *dev, long ioaddr, - int irq, int chip_idx, int board_idx); +static void *tulip_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +static int tulip_pwr_event(void *dev_instance, int event); -/* This table drives the PCI probe routines. It's mostly boilerplate in all - of the drivers, and will likely be provided by some future kernel. - Note the matching code -- the first table entry matchs all 56** cards but - second only the 1234 card. -*/ -enum pci_flags_bit { - PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4, - PCI_ADDR0=0x10<<0, PCI_ADDR1=0x10<<1, PCI_ADDR2=0x10<<2, PCI_ADDR3=0x10<<3, -}; -#define PCI_ADDR0_IO (PCI_USES_IO|PCI_ADDR0) - -struct pci_id_info { - const char *name; - u16 vendor_id, device_id, device_id_mask, flags; - int io_size, min_latency; - struct device *(*probe1)(int pci_bus, int pci_devfn, struct device *dev, - long ioaddr, int irq, int chip_idx, int fnd_cnt); +#ifdef USE_IO_OPS +#define TULIP_IOTYPE PCI_USES_MASTER | PCI_USES_IO | PCI_ADDR0 +#define TULIP_SIZE 0x80 +#define TULIP_SIZE1 0x100 +#else +#define TULIP_IOTYPE PCI_USES_MASTER | PCI_USES_MEM | PCI_ADDR1 +#define TULIP_SIZE 0x400 /* New PCI v2.1 recommends 4K min mem size. */ +#define TULIP_SIZE1 0x400 /* New PCI v2.1 recommends 4K min mem size. */ +#endif + +/* This much match tulip_tbl[]! Note 21142 == 21143. */ +enum tulip_chips { + DC21040=0, DC21041=1, DC21140=2, DC21142=3, DC21143=3, + LC82C168, MX98713, MX98715, MX98725, AX88141, AX88140, PNIC2, COMET, + COMPEX9881, I21145, XIRCOM, CONEXANT, + /* These flags may be added to the chip type. */ + HAS_VLAN=0x100, }; -#ifndef CARDBUS -static struct pci_id_info pci_tbl[] = { - { "Digital DC21040 Tulip", - 0x1011, 0x0002, 0xffff, PCI_ADDR0_IO, 128, 32, tulip_probe1 }, - { "Digital DC21041 Tulip", - 0x1011, 0x0014, 0xffff, PCI_ADDR0_IO, 128, 32, tulip_probe1 }, - { "Digital DS21140 Tulip", - 0x1011, 0x0009, 0xffff, PCI_ADDR0_IO, 128, 32, tulip_probe1 }, - { "Digital DS21143 Tulip", - 0x1011, 0x0019, 0xffff, PCI_ADDR0_IO, 128, 32, tulip_probe1 }, - { "Lite-On 82c168 PNIC", - 0x11AD, 0x0002, 0xffff, PCI_ADDR0_IO, 256, 32, tulip_probe1 }, - { "Macronix 98713 PMAC", - 0x10d9, 0x0512, 0xffff, PCI_ADDR0_IO, 256, 32, tulip_probe1 }, - { "Macronix 98715 PMAC", - 0x10d9, 0x0531, 0xffff, PCI_ADDR0_IO, 256, 32, tulip_probe1 }, - { "Macronix 98725 PMAC", - 0x10d9, 0x0531, 0xffff, PCI_ADDR0_IO, 256, 32, tulip_probe1 }, - { "ASIX AX88140", - 0x125B, 0x1400, 0xffff, PCI_ADDR0_IO, 128, 32, tulip_probe1 }, - { "Lite-On LC82C115 PNIC-II", - 0x11AD, 0xc115, 0xffff, PCI_ADDR0_IO, 256, 32, tulip_probe1 }, - { "ADMtek AN981 Comet", - 0x1317, 0x0981, 0xffff, PCI_ADDR0_IO, 256, 32, tulip_probe1 }, - { "Compex RL100-TX", - 0x11F6, 0x9881, 0xffff, PCI_ADDR0_IO, 128, 32, tulip_probe1 }, - { "Intel 21145 Tulip", - 0x8086, 0x0039, 0xffff, PCI_ADDR0_IO, 128, 32, tulip_probe1 }, - { "Xircom Tulip clone", - 0x115d, 0x0003, 0xffff, PCI_ADDR0_IO, 128, 32, tulip_probe1 }, - {0}, + +static struct pci_id_info pci_id_tbl[] = { + { "Digital DC21040 Tulip", { 0x00021011, 0xffffffff }, + TULIP_IOTYPE, 0x80, DC21040 }, + { "Digital DC21041 Tulip", { 0x00141011, 0xffffffff }, + TULIP_IOTYPE, 0x80, DC21041 }, + { "Digital DS21140A Tulip", { 0x00091011, 0xffffffff, 0,0, 0x20,0xf0 }, + TULIP_IOTYPE, 0x80, DC21140 }, + { "Digital DS21140 Tulip", { 0x00091011, 0xffffffff }, + TULIP_IOTYPE, 0x80, DC21140 }, + { "Digital DS21143-xD Tulip", { 0x00191011, 0xffffffff, 0,0, 0x40,0xf0 }, + TULIP_IOTYPE, TULIP_SIZE, DC21142 | HAS_VLAN }, + { "Digital DS21143-xC Tulip", { 0x00191011, 0xffffffff, 0,0, 0x30,0xf0 }, + TULIP_IOTYPE, TULIP_SIZE, DC21142 }, + { "Digital DS21142 Tulip", { 0x00191011, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE, DC21142 }, + { "Kingston KNE110tx (PNIC)", + { 0x000211AD, 0xffffffff, 0xf0022646, 0xffffffff }, + TULIP_IOTYPE, 256, LC82C168 }, + { "Linksys LNE100TX (82c168 PNIC)", /* w/SYM */ + { 0x000211AD, 0xffffffff, 0xffff11ad, 0xffffffff, 17,0xff }, + TULIP_IOTYPE, 256, LC82C168 }, + { "Linksys LNE100TX (82c169 PNIC)", /* w/ MII */ + { 0x000211AD, 0xffffffff, 0xf00311ad, 0xffffffff, 32,0xff }, + TULIP_IOTYPE, 256, LC82C168 }, + { "Lite-On 82c168 PNIC", { 0x000211AD, 0xffffffff }, + TULIP_IOTYPE, 256, LC82C168 }, + { "Macronix 98713 PMAC", { 0x051210d9, 0xffffffff }, + TULIP_IOTYPE, 256, MX98713 }, + { "Macronix 98715 PMAC", { 0x053110d9, 0xffffffff }, + TULIP_IOTYPE, 256, MX98715 }, + { "Macronix 98725 PMAC", { 0x053110d9, 0xffffffff }, + TULIP_IOTYPE, 256, MX98725 }, + { "ASIX AX88141", { 0x1400125B, 0xffffffff, 0,0, 0x10, 0xf0 }, + TULIP_IOTYPE, 128, AX88141 }, + { "ASIX AX88140", { 0x1400125B, 0xffffffff }, + TULIP_IOTYPE, 128, AX88140 }, + { "Lite-On LC82C115 PNIC-II", { 0xc11511AD, 0xffffffff }, + TULIP_IOTYPE, 256, PNIC2 }, + { "ADMtek AN981 Comet", { 0x09811317, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "ADMtek Centaur-P", { 0x09851317, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "ADMtek Centaur-C", { 0x19851317, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "D-Link DFE-680TXD v1.0 (ADMtek Centaur-C)", { 0x15411186, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "ADMtek Centaur-C (Linksys v2)", { 0xab0213d1, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "ADMtek Centaur-C (Linksys)", { 0xab0313d1, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "ADMtek Centaur-C (Linksys)", { 0xab0813d1, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "ADMtek Centaur-C (Linksys PCM200 v3)", { 0xab081737, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "ADMtek Centaur-C (Linksys PCM200 v3)", { 0xab091737, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "STMicro STE10/100 Comet", { 0x0981104a, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "STMicro STE10/100A Comet", { 0x2774104a, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "ADMtek Comet-II", { 0x95111317, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "ADMtek Comet-II (9513)", { 0x95131317, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "SMC1255TX (ADMtek Comet)", + { 0x12161113, 0xffffffff, 0x125510b8, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "Accton EN1217/EN2242 (ADMtek Comet)", { 0x12161113, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "SMC1255TX (ADMtek Comet-II)", { 0x125510b8, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "ADMtek Comet-II (model 1020)", { 0x1020111a, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "Allied Telesyn A120 (ADMtek Comet)", { 0xa1201259, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { "Compex RL100-TX", { 0x988111F6, 0xffffffff }, + TULIP_IOTYPE, 128, COMPEX9881 }, + { "Intel 21145 Tulip", { 0x00398086, 0xffffffff }, + TULIP_IOTYPE, 128, I21145 }, + { "Xircom Tulip clone", { 0x0003115d, 0xffffffff }, + TULIP_IOTYPE, 128, XIRCOM }, + { "Davicom DM9102", { 0x91021282, 0xffffffff }, + TULIP_IOTYPE, 0x80, DC21140 }, + { "Davicom DM9100", { 0x91001282, 0xffffffff }, + TULIP_IOTYPE, 0x80, DC21140 }, + { "Macronix mxic-98715 (EN1217)", { 0x12171113, 0xffffffff }, + TULIP_IOTYPE, 256, MX98715 }, + { "Conexant LANfinity", { 0x180314f1, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, CONEXANT }, + { "3Com 3cSOHO100B-TX (ADMtek Centaur)", { 0x930010b7, 0xffffffff }, + TULIP_IOTYPE, TULIP_SIZE1, COMET }, + { 0}, }; -#endif /* !CARD_BUS */ -/* This table use during operation for capabilities and media timer. */ +struct drv_id_info tulip_drv_id = { + "tulip", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, + tulip_probe1, tulip_pwr_event }; + +/* This table is used during operation for capabilities and media timer. */ static void tulip_timer(unsigned long data); -static void t21142_timer(unsigned long data); +static void nway_timer(unsigned long data); static void mxic_timer(unsigned long data); static void pnic_timer(unsigned long data); static void comet_timer(unsigned long data); @@ -364,23 +468,27 @@ static void comet_timer(unsigned long data); enum tbl_flag { HAS_MII=1, HAS_MEDIA_TABLE=2, CSR12_IN_SROM=4, ALWAYS_CHECK_MII=8, HAS_PWRDWN=0x10, MC_HASH_ONLY=0x20, /* Hash-only multicast filter. */ - HAS_PNICNWAY=0x80, HAS_NWAY143=0x40, /* Uses internal NWay xcvr. */ - HAS_8023X=0x100, + HAS_PNICNWAY=0x80, HAS_NWAY=0x40, /* Uses internal NWay xcvr. */ + HAS_INTR_MITIGATION=0x100, IS_ASIX=0x200, HAS_8023X=0x400, + COMET_MAC_ADDR=0x0800, }; + +/* Note: this table must match enum tulip_chips above. */ static struct tulip_chip_table { char *chip_name; - int io_size; + int io_size; /* Unused */ int valid_intrs; /* CSR7 interrupt enable settings */ int flags; void (*media_timer)(unsigned long data); } tulip_tbl[] = { { "Digital DC21040 Tulip", 128, 0x0001ebef, 0, tulip_timer }, - { "Digital DC21041 Tulip", 128, 0x0001ebff, HAS_MEDIA_TABLE, tulip_timer }, + { "Digital DC21041 Tulip", 128, 0x0001ebff, + HAS_MEDIA_TABLE | HAS_NWAY, tulip_timer }, { "Digital DS21140 Tulip", 128, 0x0001ebef, HAS_MII | HAS_MEDIA_TABLE | CSR12_IN_SROM, tulip_timer }, { "Digital DS21143 Tulip", 128, 0x0801fbff, - HAS_MII | HAS_MEDIA_TABLE | ALWAYS_CHECK_MII | HAS_PWRDWN | HAS_NWAY143, - t21142_timer }, + HAS_MII | HAS_MEDIA_TABLE | ALWAYS_CHECK_MII | HAS_PWRDWN | HAS_NWAY + | HAS_INTR_MITIGATION, nway_timer }, { "Lite-On 82c168 PNIC", 256, 0x0001ebef, HAS_MII | HAS_PNICNWAY, pnic_timer }, { "Macronix 98713 PMAC", 128, 0x0001ebef, @@ -390,38 +498,37 @@ static struct tulip_chip_table { { "Macronix 98725 PMAC", 256, 0x0001ebef, HAS_MEDIA_TABLE, mxic_timer }, { "ASIX AX88140", 128, 0x0001fbff, - HAS_MII | HAS_MEDIA_TABLE | CSR12_IN_SROM | MC_HASH_ONLY, tulip_timer }, + HAS_MII | HAS_MEDIA_TABLE | CSR12_IN_SROM | MC_HASH_ONLY | IS_ASIX, tulip_timer }, + { "ASIX AX88141", 128, 0x0001fbff, + HAS_MII | HAS_MEDIA_TABLE | CSR12_IN_SROM | MC_HASH_ONLY | IS_ASIX, tulip_timer }, { "Lite-On PNIC-II", 256, 0x0801fbff, - HAS_MII | HAS_NWAY143 | HAS_8023X, t21142_timer }, + HAS_MII | HAS_NWAY | HAS_8023X, nway_timer }, { "ADMtek Comet", 256, 0x0001abef, - MC_HASH_ONLY, comet_timer }, + HAS_MII | MC_HASH_ONLY | COMET_MAC_ADDR, comet_timer }, { "Compex 9881 PMAC", 128, 0x0001ebef, HAS_MII | HAS_MEDIA_TABLE | CSR12_IN_SROM, mxic_timer }, { "Intel DS21145 Tulip", 128, 0x0801fbff, - HAS_MII | HAS_MEDIA_TABLE | ALWAYS_CHECK_MII | HAS_PWRDWN | HAS_NWAY143, - t21142_timer }, + HAS_MII | HAS_MEDIA_TABLE | ALWAYS_CHECK_MII | HAS_PWRDWN | HAS_NWAY, + nway_timer }, { "Xircom tulip work-alike", 128, 0x0801fbff, - HAS_MII | HAS_MEDIA_TABLE | ALWAYS_CHECK_MII | HAS_PWRDWN | HAS_NWAY143, - t21142_timer }, + HAS_MII | HAS_MEDIA_TABLE | ALWAYS_CHECK_MII | HAS_PWRDWN | HAS_NWAY, + nway_timer }, + { "Conexant LANfinity", 256, 0x0001ebef, + HAS_MII | HAS_PWRDWN, tulip_timer }, {0}, }; -/* This matches the table above. Note 21142 == 21143. */ -enum chips { - DC21040=0, DC21041=1, DC21140=2, DC21142=3, DC21143=3, - LC82C168, MX98713, MX98715, MX98725, AX88140, PNIC2, COMET, COMPEX9881, - I21145, -}; /* A full-duplex map for media types. */ enum MediaIs { MediaIsFD = 1, MediaAlwaysFD=2, MediaIsMII=4, MediaIsFx=8, MediaIs100=16}; -static const char media_cap[] = -{0,0,0,16, 3,19,16,24, 27,4,7,5, 0,20,23,20 }; +static const char media_cap[32] = +{0,0,0,16, 3,19,16,24, 27,4,7,5, 0,20,23,20, 28,31,0,0, }; static u8 t21040_csr13[] = {2,0x0C,8,4, 4,0,0,0, 0,0,0,0, 4,0,0,0}; + /* 21041 transceiver register settings: 10-T, 10-2, AUI, 10-T, 10T-FD*/ -static u16 t21041_csr13[] = { 0xEF05, 0xEF0D, 0xEF0D, 0xEF05, 0xEF05, }; -static u16 t21041_csr14[] = { 0xFFFF, 0xF7FD, 0xF7FD, 0x7F3F, 0x7F3D, }; +static u16 t21041_csr13[] = { 0xEF01, 0xEF09, 0xEF09, 0xEF01, 0xEF09, }; +static u16 t21041_csr14[] = { 0xFFFF, 0xF7FD, 0xF7FD, 0x6F3F, 0x6F3D, }; static u16 t21041_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, }; static u16 t21142_csr13[] = { 0x0001, 0x0009, 0x0009, 0x0000, 0x0001, }; @@ -437,12 +544,20 @@ enum tulip_offsets { /* The bits in the CSR5 status registers, mostly interrupt sources. */ enum status_bits { - TimerInt=0x800, SytemError=0x2000, TPLnkFail=0x1000, TPLnkPass=0x10, - NormalIntr=0x10000, AbnormalIntr=0x8000, - RxJabber=0x200, RxDied=0x100, RxNoBuf=0x80, RxIntr=0x40, + TimerInt=0x800, TPLnkFail=0x1000, TPLnkPass=0x10, + NormalIntr=0x10000, AbnormalIntr=0x8000, PCIBusError=0x2000, + RxJabber=0x200, RxStopped=0x100, RxNoBuf=0x80, RxIntr=0x40, TxFIFOUnderflow=0x20, TxJabber=0x08, TxNoBuf=0x04, TxDied=0x02, TxIntr=0x01, }; +/* The configuration bits in CSR6. */ +enum csr6_mode_bits { + TxOn=0x2000, RxOn=0x0002, FullDuplex=0x0200, + AcceptBroadcast=0x0100, AcceptAllMulticast=0x0080, + AcceptAllPhys=0x0040, AcceptRunt=0x0008, +}; + + /* The Tulip Rx and Tx buffer descriptors. */ struct tulip_rx_desc { s32 status; @@ -470,7 +585,7 @@ enum desc_status_bits { */ #define DESC_RING_WRAP 0x02000000 -#define EEPROM_SIZE 128 /* 2 << EEPROM_ADDRLEN */ +#define EEPROM_SIZE 512 /* support 256*16 EEPROMs */ struct medialeaf { u8 type; @@ -493,239 +608,147 @@ struct mediainfo { unsigned char *info; }; +#define PRIV_ALIGN 15 /* Required alignment mask */ struct tulip_private { - char devname[8]; /* Used only for kernel debugging. */ - const char *product_name; - struct device *next_module; struct tulip_rx_desc rx_ring[RX_RING_SIZE]; struct tulip_tx_desc tx_ring[TX_RING_SIZE]; - /* The saved address of a sent-in-place packet/buffer, for skfree(). */ + /* The saved addresses of Rx/Tx-in-place packet buffers. */ struct sk_buff* tx_skbuff[TX_RING_SIZE]; - /* The addresses of receive-in-place skbuffs. */ struct sk_buff* rx_skbuff[RX_RING_SIZE]; - char *rx_buffs; /* Address of temporary Rx buffers. */ + struct net_device *next_module; + void *priv_addr; /* Unaligned address of dev->priv for kfree */ + /* Multicast filter control. */ u16 setup_frame[96]; /* Pseudo-Tx frame to init address table. */ - int chip_id; - int revision; + u32 mc_filter[2]; /* Multicast hash filter */ + int multicast_filter_limit; + struct pci_dev *pci_dev; + int chip_id, revision; int flags; + int max_interrupt_work; + int msg_level; + unsigned int csr0, csr6; /* Current CSR0, CSR6 settings. */ + /* Note: cache line pairing and isolation of Rx vs. Tx indicies. */ + unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ + unsigned int rx_buf_sz; /* Based on MTU+slack. */ + int rx_copybreak; + unsigned int rx_dead:1; /* We have no Rx buffers. */ + struct net_device_stats stats; - struct timer_list timer; /* Media selection timer. */ - int interrupt; /* In-interrupt flag. */ - unsigned int cur_rx, cur_tx; /* The next free ring entry */ - unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */ + unsigned int cur_tx, dirty_tx; unsigned int tx_full:1; /* The Tx queue is full. */ + + /* Media selection state. */ unsigned int full_duplex:1; /* Full-duplex operation requested. */ unsigned int full_duplex_lock:1; unsigned int fake_addr:1; /* Multiport board faked address. */ - unsigned int default_port:4; /* Last dev->if_port value. */ unsigned int media2:4; /* Secondary monitored media port. */ - unsigned int medialock:1; /* Don't sense media type. */ + unsigned int medialock:1; /* Do not sense media type. */ unsigned int mediasense:1; /* Media sensing in progress. */ unsigned int nway:1, nwayset:1; /* 21143 internal NWay. */ - unsigned int csr0; /* CSR0 setting. */ - unsigned int csr6; /* Current CSR6 control settings. */ + unsigned int default_port; /* Last dev->if_port value. */ unsigned char eeprom[EEPROM_SIZE]; /* Serial EEPROM contents. */ - void (*link_change)(struct device *dev, int csr5); - u16 to_advertise; /* NWay capabilities advertised. */ + struct timer_list timer; /* Media selection timer. */ + void (*link_change)(struct net_device *dev, int csr5); u16 lpar; /* 21143 Link partner ability. */ - u16 advertising[4]; + u16 sym_advertise, mii_advertise; /* NWay to-advertise. */ + u16 advertising[4]; /* MII advertise, from SROM table. */ signed char phys[4], mii_cnt; /* MII device addresses. */ + spinlock_t mii_lock; struct mediatable *mtable; int cur_index; /* Current media index. */ int saved_if_port; - unsigned char pci_bus, pci_devfn; - int ttimer; - int susp_rx; - unsigned long nir; - int pad0, pad1; /* Used for 8-byte alignment */ }; -static void parse_eeprom(struct device *dev); +static void start_link(struct net_device *dev); +static void parse_eeprom(struct net_device *dev); static int read_eeprom(long ioaddr, int location, int addr_len); -static int mdio_read(struct device *dev, int phy_id, int location); -static void mdio_write(struct device *dev, int phy_id, int location, int value); -static void select_media(struct device *dev, int startup); -static int tulip_open(struct device *dev); +static int mdio_read(struct net_device *dev, int phy_id, int location); +static void mdio_write(struct net_device *dev, int phy_id, int location, int value); +static int tulip_open(struct net_device *dev); /* Chip-specific media selection (timer functions prototyped above). */ -static void t21142_lnk_change(struct device *dev, int csr5); -static void t21142_start_nway(struct device *dev); -static void pnic_lnk_change(struct device *dev, int csr5); -static void pnic_do_nway(struct device *dev); - -static void tulip_tx_timeout(struct device *dev); -static void tulip_init_ring(struct device *dev); -static int tulip_start_xmit(struct sk_buff *skb, struct device *dev); -static int tulip_refill_rx(struct device *dev); -static int tulip_rx(struct device *dev); +static int check_duplex(struct net_device *dev); +static void select_media(struct net_device *dev, int startup); +static void init_media(struct net_device *dev); +static void nway_lnk_change(struct net_device *dev, int csr5); +static void nway_start(struct net_device *dev); +static void pnic_lnk_change(struct net_device *dev, int csr5); +static void pnic_do_nway(struct net_device *dev); + +static void tulip_tx_timeout(struct net_device *dev); +static void tulip_init_ring(struct net_device *dev); +static int tulip_start_xmit(struct sk_buff *skb, struct net_device *dev); +static int tulip_rx(struct net_device *dev); static void tulip_interrupt(int irq, void *dev_instance, struct pt_regs *regs); -static int tulip_close(struct device *dev); -static struct net_device_stats *tulip_get_stats(struct device *dev); +static int tulip_close(struct net_device *dev); +static struct net_device_stats *tulip_get_stats(struct net_device *dev); #ifdef HAVE_PRIVATE_IOCTL -static int private_ioctl(struct device *dev, struct ifreq *rq, int cmd); +static int private_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); #endif -static void set_rx_mode(struct device *dev); +static void set_rx_mode(struct net_device *dev); /* A list of all installed Tulip devices. */ -static struct device *root_tulip_dev = NULL; +static struct net_device *root_tulip_dev = NULL; -#ifndef CARDBUS -int tulip_probe(struct device *dev) +static void *tulip_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int pci_tbl_idx, int find_cnt) { - int cards_found = 0; - int pci_index = 0; - unsigned char pci_bus, pci_device_fn; - - if ( ! pcibios_present()) - return -ENODEV; - - for (;pci_index < 0xff; pci_index++) { - u16 vendor, device, pci_command, new_command, subvendor; - int chip_idx; - int irq; - long ioaddr; - - if (pcibios_find_class - (PCI_CLASS_NETWORK_ETHERNET << 8, - reverse_probe ? 0xfe - pci_index : pci_index, - &pci_bus, &pci_device_fn) != PCIBIOS_SUCCESSFUL) { - if (reverse_probe) - continue; - else - break; - } - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_VENDOR_ID, &vendor); - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_DEVICE_ID, &device); - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_SUBSYSTEM_VENDOR_ID, &subvendor); - - if( subvendor == 0x1376 ){ - printk("tulip: skipping LMC card.\n"); - continue; - } - - for (chip_idx = 0; pci_tbl[chip_idx].vendor_id; chip_idx++) - if (vendor == pci_tbl[chip_idx].vendor_id - && (device & pci_tbl[chip_idx].device_id_mask) == - pci_tbl[chip_idx].device_id) - break; - if (pci_tbl[chip_idx].vendor_id == 0) - continue; - - { -#if defined(PCI_SUPPORT_VER2) - struct pci_dev *pdev = pci_find_slot(pci_bus, pci_device_fn); - ioaddr = pdev->base_address[0] & ~3; - irq = pdev->irq; -#else - u32 pci_ioaddr; - u8 pci_irq_line; - pcibios_read_config_dword(pci_bus, pci_device_fn, - PCI_BASE_ADDRESS_0, &pci_ioaddr); - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_INTERRUPT_LINE, &pci_irq_line); - ioaddr = pci_ioaddr & ~3; - irq = pci_irq_line; -#endif - } - - if (debug > 2) - printk(KERN_INFO "Found %s at PCI I/O address %#lx.\n", - pci_tbl[chip_idx].name, ioaddr); - - if (check_region(ioaddr, pci_tbl[chip_idx].io_size)) - continue; - - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, &pci_command); - new_command = pci_command | PCI_COMMAND_MASTER|PCI_COMMAND_IO; - if (pci_command != new_command) { - printk(KERN_INFO " The PCI BIOS has not enabled the" - " device at %d/%d! Updating PCI command %4.4x->%4.4x.\n", - pci_bus, pci_device_fn, pci_command, new_command); - pcibios_write_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, new_command); - } - - dev = pci_tbl[chip_idx].probe1(pci_bus, pci_device_fn, dev, ioaddr, - irq, chip_idx, cards_found); - - /* Get and check the bus-master and latency values. */ - if (dev) { - u8 pci_latency; - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, &pci_latency); - if (pci_latency < 10) { - printk(KERN_INFO " PCI latency timer (CFLT) is " - "unreasonably low at %d. Setting to 64 clocks.\n", - pci_latency); - pcibios_write_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, 64); - } - } - dev = 0; - cards_found++; - } - - return cards_found ? 0 : -ENODEV; -} -#endif /* not CARDBUS */ - -static struct device *tulip_probe1(int pci_bus, int pci_devfn, - struct device *dev, long ioaddr, int irq, - int chip_idx, int board_idx) -{ - static int did_version = 0; /* Already printed version info. */ + struct net_device *dev; struct tulip_private *tp; + void *priv_mem; /* See note below on the multiport cards. */ - static unsigned char last_phys_addr[6] = {0x00, 'L', 'i', 'n', 'u', 'x'}; + static unsigned char last_phys_addr[6] = {0x02, 'L', 'i', 'n', 'u', 'x'}; static int last_irq = 0; static int multiport_cnt = 0; /* For four-port boards w/one EEPROM */ u8 chip_rev; - int i; + int i, chip_idx = pci_id_tbl[pci_tbl_idx].drv_flags & 0xff; unsigned short sum; u8 ee_data[EEPROM_SIZE]; - if (tulip_debug > 0 && did_version++ == 0) - printk(KERN_INFO "%s", version); + /* Bring the 21041/21143 out of sleep mode. + Caution: Snooze mode does not work with some boards! */ + if (tulip_tbl[chip_idx].flags & HAS_PWRDWN) + pci_write_config_dword(pdev, 0x40, 0x00000000); - dev = init_etherdev(dev, 0); + if (inl(ioaddr + CSR5) == 0xffffffff) { + printk(KERN_ERR "The Tulip chip at %#lx is not functioning.\n", ioaddr); + return 0; + } + + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; /* Make certain the data structures are quadword aligned. */ - tp = (void *)(((long)kmalloc(sizeof(*tp), GFP_KERNEL | GFP_DMA) + 7) & ~7); + priv_mem = kmalloc(sizeof(*tp) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; + dev->priv = tp = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); memset(tp, 0, sizeof(*tp)); - dev->priv = tp; + tp->mii_lock = (spinlock_t) SPIN_LOCK_UNLOCKED; + tp->priv_addr = priv_mem; tp->next_module = root_tulip_dev; root_tulip_dev = dev; - pcibios_read_config_byte(pci_bus, pci_devfn, PCI_REVISION_ID, &chip_rev); - - /* Bring the 21041/21143 out of sleep mode. - Caution: Snooze mode does not work with some boards! */ - if (tulip_tbl[chip_idx].flags & HAS_PWRDWN) - pcibios_write_config_dword(pci_bus, pci_devfn, 0x40, 0x00000000); + pci_read_config_byte(pdev, PCI_REVISION_ID, &chip_rev); printk(KERN_INFO "%s: %s rev %d at %#3lx,", - dev->name, tulip_tbl[chip_idx].chip_name, chip_rev, ioaddr); + dev->name, pci_id_tbl[pci_tbl_idx].name, chip_rev, ioaddr); - /* Stop the chip's Tx and Rx processes. */ - outl(inl(ioaddr + CSR6) & ~0x2002, ioaddr + CSR6); + /* Stop the Tx and Rx processes. */ + outl(inl(ioaddr + CSR6) & ~TxOn & ~RxOn, ioaddr + CSR6); /* Clear the missed-packet counter. */ - (volatile int)inl(ioaddr + CSR8); + inl(ioaddr + CSR8); if (chip_idx == DC21041 && inl(ioaddr + CSR9) & 0x8000) { printk(" 21040 compatible mode,"); chip_idx = DC21040; } - /* The station address ROM is read byte serially. The register must - be polled, waiting for the value to be read bit serially from the - EEPROM. - */ + /* The SROM/EEPROM interface varies dramatically. */ sum = 0; if (chip_idx == DC21040) { outl(0, ioaddr + CSR9); /* Reset the pointer with a dummy write. */ @@ -749,16 +772,18 @@ static struct device *tulip_probe1(int pci_bus, int pci_devfn, } } else if (chip_idx == COMET) { /* No need to read the EEPROM. */ - put_unaligned(inl(ioaddr + 0xA4), (u32 *)dev->dev_addr); - put_unaligned(inl(ioaddr + 0xA8), (u16 *)(dev->dev_addr + 4)); + put_unaligned(le32_to_cpu(inl(ioaddr + 0xA4)), (u32 *)dev->dev_addr); + put_unaligned(le16_to_cpu(inl(ioaddr + 0xA8)), + (u16 *)(dev->dev_addr + 4)); for (i = 0; i < 6; i ++) sum += dev->dev_addr[i]; } else { /* A serial EEPROM interface, we read now and sort it out later. */ int sa_offset = 0; int ee_addr_size = read_eeprom(ioaddr, 0xff, 8) & 0x40000 ? 8 : 6; + int eeprom_word_cnt = 1 << ee_addr_size; - for (i = 0; i < sizeof(ee_data)/2; i++) + for (i = 0; i < eeprom_word_cnt; i++) ((u16 *)ee_data)[i] = le16_to_cpu(read_eeprom(ioaddr, i, ee_addr_size)); @@ -768,7 +793,12 @@ static struct device *tulip_probe1(int pci_bus, int pci_devfn, for (i = 0; i < 8; i ++) if (ee_data[i] != ee_data[16+i]) sa_offset = 20; - if (ee_data[0] == 0xff && ee_data[1] == 0xff && ee_data[2] == 0) { + if (chip_idx == CONEXANT) { + /* Check that the tuple type and length is correct. */ + if (ee_data[0x198] == 0x04 && ee_data[0x199] == 6) + sa_offset = 0x19A; + } else if (ee_data[0] == 0xff && ee_data[1] == 0xff && + ee_data[2] == 0) { sa_offset = 2; /* Grrr, damn Matrox boards. */ multiport_cnt = 4; } @@ -806,27 +836,33 @@ static struct device *tulip_probe1(int pci_bus, int pci_devfn, printk(", IRQ %d.\n", irq); last_irq = irq; - /* We do a request_region() only to register /proc/ioports info. */ - /* Note that proper size is tulip_tbl[chip_idx].chip_name, but... */ - request_region(ioaddr, tulip_tbl[chip_idx].io_size, dev->name); +#ifdef USE_IO_OPS + /* We do a request_region() to register /proc/ioports info. */ + request_region(ioaddr, pci_id_tbl[chip_idx].io_size, dev->name); +#endif dev->base_addr = ioaddr; dev->irq = irq; - tp->pci_bus = pci_bus; - tp->pci_devfn = pci_devfn; + tp->pci_dev = pdev; + tp->msg_level = (1 << debug) - 1; tp->chip_id = chip_idx; tp->revision = chip_rev; - tp->flags = tulip_tbl[chip_idx].flags; + tp->flags = tulip_tbl[chip_idx].flags + | (pci_id_tbl[pci_tbl_idx].drv_flags & 0xffffff00); + tp->rx_copybreak = rx_copybreak; + tp->max_interrupt_work = max_interrupt_work; + tp->multicast_filter_limit = multicast_filter_limit; tp->csr0 = csr0; /* BugFixes: The 21143-TD hangs with PCI Write-and-Invalidate cycles. And the ASIX must have a burst limit or horrible things happen. */ if (chip_idx == DC21143 && chip_rev == 65) tp->csr0 &= ~0x01000000; - else if (chip_idx == AX88140) + else if (tp->flags & IS_ASIX) tp->csr0 |= 0x2000; + /* We support a zillion ways to set the media type. */ #ifdef TULIP_FULL_DUPLEX tp->full_duplex = 1; tp->full_duplex_lock = 1; @@ -839,16 +875,19 @@ static struct device *tulip_probe1(int pci_bus, int pci_devfn, #endif /* The lower four bits are the media type. */ - if (board_idx >= 0 && board_idx < MAX_UNITS) { - tp->default_port = options[board_idx] & 15; - if ((options[board_idx] & 0x90) || full_duplex[board_idx] > 0) + if (find_cnt >= 0 && find_cnt < MAX_UNITS) { + if (options[find_cnt] & 0x1f) + tp->default_port = options[find_cnt] & 0x1f; + if ((options[find_cnt] & 0x200) || full_duplex[find_cnt] > 0) tp->full_duplex = 1; - if (mtu[board_idx] > 0) - dev->mtu = mtu[board_idx]; + if (mtu[find_cnt] > 0) + dev->mtu = mtu[find_cnt]; } if (dev->mem_start) - tp->default_port = dev->mem_start; + tp->default_port = dev->mem_start & 0x1f; if (tp->default_port) { + printk(KERN_INFO "%s: Transceiver selection forced to %s.\n", + dev->name, medianame[tp->default_port & MEDIA_MASK]); tp->medialock = 1; if (media_cap[tp->default_port] & MediaAlwaysFD) tp->full_duplex = 1; @@ -858,11 +897,9 @@ static struct device *tulip_probe1(int pci_bus, int pci_devfn, if (media_cap[tp->default_port] & MediaIsMII) { u16 media2advert[] = { 0x20, 0x40, 0x03e0, 0x60, 0x80, 0x100, 0x200 }; - tp->to_advertise = media2advert[tp->default_port - 9]; - } else if (tp->flags & HAS_8023X) - tp->to_advertise = 0x05e1; - else - tp->to_advertise = 0x01e1; + tp->mii_advertise = media2advert[tp->default_port - 9]; + tp->mii_advertise |= (tp->flags & HAS_8023X); /* Matching bits! */ + } /* This is logically part of probe1(), but too complex to write inline. */ if (tp->flags & HAS_MEDIA_TABLE) { @@ -870,16 +907,49 @@ static struct device *tulip_probe1(int pci_bus, int pci_devfn, parse_eeprom(dev); } + /* The Tulip-specific entries in the device structure. */ + dev->open = &tulip_open; + dev->hard_start_xmit = &tulip_start_xmit; + dev->stop = &tulip_close; + dev->get_stats = &tulip_get_stats; +#ifdef HAVE_PRIVATE_IOCTL + dev->do_ioctl = &private_ioctl; +#endif +#ifdef HAVE_MULTICAST + dev->set_multicast_list = &set_rx_mode; +#endif + + if (tp->flags & HAS_NWAY) + tp->link_change = nway_lnk_change; + else if (tp->flags & HAS_PNICNWAY) + tp->link_change = pnic_lnk_change; + start_link(dev); + if (chip_idx == COMET) { + /* Set the Comet LED configuration. */ + outl(0xf0000000, ioaddr + CSR9); + } + + return dev; +} + +/* Start the link, typically called at probe1() time but sometimes later with + multiport cards. */ +static void start_link(struct net_device *dev) +{ + struct tulip_private *tp = (struct tulip_private *)dev->priv; + long ioaddr = dev->base_addr; + int i; + if ((tp->flags & ALWAYS_CHECK_MII) || (tp->mtable && tp->mtable->has_mii) || ( ! tp->mtable && (tp->flags & HAS_MII))) { - int phy, phy_idx; + int phyn, phy_idx = 0; if (tp->mtable && tp->mtable->has_mii) { for (i = 0; i < tp->mtable->leafcount; i++) if (tp->mtable->mleaf[i].media == 11) { tp->cur_index = i; tp->saved_if_port = dev->if_port; - select_media(dev, 1); + select_media(dev, 2); dev->if_port = tp->saved_if_port; break; } @@ -887,33 +957,38 @@ static struct device *tulip_probe1(int pci_bus, int pci_devfn, /* Find the connected MII xcvrs. Doing this in open() would allow detecting external xcvrs later, but takes much time. */ - for (phy = 0, phy_idx = 0; phy < 32 && phy_idx < sizeof(tp->phys); - phy++) { + for (phyn = 1; phyn <= 32 && phy_idx < sizeof(tp->phys); phyn++) { + int phy = phyn & 0x1f; int mii_status = mdio_read(dev, phy, 1); if ((mii_status & 0x8301) == 0x8001 || ((mii_status & 0x8000) == 0 && (mii_status & 0x7800) != 0)) { int mii_reg0 = mdio_read(dev, phy, 0); int mii_advert = mdio_read(dev, phy, 4); - int reg4 = ((mii_status>>6) & tp->to_advertise) | 1; - tp->phys[phy_idx] = phy; - tp->advertising[phy_idx++] = reg4; + int to_advert; + + if (tp->mii_advertise) + to_advert = tp->mii_advertise; + else if (tp->advertising[phy_idx]) + to_advert = tp->advertising[phy_idx]; + else /* Leave unchanged. */ + tp->mii_advertise = to_advert = mii_advert; + + tp->phys[phy_idx++] = phy; printk(KERN_INFO "%s: MII transceiver #%d " "config %4.4x status %4.4x advertising %4.4x.\n", dev->name, phy, mii_reg0, mii_status, mii_advert); /* Fixup for DLink with miswired PHY. */ - if (mii_advert != reg4) { + if (mii_advert != to_advert) { printk(KERN_DEBUG "%s: Advertising %4.4x on PHY %d," " previously advertising %4.4x.\n", - dev->name, reg4, phy, mii_advert); - printk(KERN_DEBUG "%s: Advertising %4.4x (to advertise" - " is %4.4x).\n", - dev->name, reg4, tp->to_advertise); - mdio_write(dev, phy, 4, reg4); + dev->name, to_advert, phy, mii_advert); + mdio_write(dev, phy, 4, to_advert); } /* Enable autonegotiation: some boards default to off. */ - mdio_write(dev, phy, 0, mii_reg0 | - (tp->full_duplex ? 0x1100 : 0x1000) | - (media_cap[tp->default_port]&MediaIs100 ? 0x2000:0)); + mdio_write(dev, phy, 0, (mii_reg0 & ~0x3000) | + (tp->full_duplex ? 0x0100 : 0x0000) | + ((media_cap[tp->default_port] & MediaIs100) ? + 0x2000 : 0x1000)); } } tp->mii_cnt = phy_idx; @@ -924,36 +999,21 @@ static struct device *tulip_probe1(int pci_bus, int pci_devfn, } } - /* The Tulip-specific entries in the device structure. */ - dev->open = &tulip_open; - dev->hard_start_xmit = &tulip_start_xmit; - dev->stop = &tulip_close; - dev->get_stats = &tulip_get_stats; -#ifdef HAVE_PRIVATE_IOCTL - dev->do_ioctl = &private_ioctl; -#endif -#ifdef HAVE_MULTICAST - dev->set_multicast_list = &set_rx_mode; -#endif - - if ((tp->flags & HAS_NWAY143) || tp->chip_id == DC21041) - tp->link_change = t21142_lnk_change; - else if (tp->flags & HAS_PNICNWAY) - tp->link_change = pnic_lnk_change; - /* Reset the xcvr interface and turn on heartbeat. */ - switch (chip_idx) { + switch (tp->chip_id) { + case DC21040: + outl(0x00000000, ioaddr + CSR13); + outl(0x00000004, ioaddr + CSR13); + break; case DC21041: - tp->to_advertise = 0x0061; + /* This is nway_start(). */ + if (tp->sym_advertise == 0) + tp->sym_advertise = 0x0061; outl(0x00000000, ioaddr + CSR13); outl(0xFFFFFFFF, ioaddr + CSR14); outl(0x00000008, ioaddr + CSR15); /* Listen on AUI also. */ - outl(inl(ioaddr + CSR6) | 0x0200, ioaddr + CSR6); - outl(0x0000EF05, ioaddr + CSR13); - break; - case DC21040: - outl(0x00000000, ioaddr + CSR13); - outl(0x00000004, ioaddr + CSR13); + outl(inl(ioaddr + CSR6) | FullDuplex, ioaddr + CSR6); + outl(0x0000EF01, ioaddr + CSR13); break; case DC21140: default: if (tp->mtable) @@ -967,7 +1027,7 @@ static struct device *tulip_probe1(int pci_bus, int pci_devfn, outl(0x0000, ioaddr + CSR14); outl(0x820E0000, ioaddr + CSR6); } else - t21142_start_nway(dev); + nway_start(dev); break; case LC82C168: if ( ! tp->mii_cnt) { @@ -979,35 +1039,36 @@ static struct device *tulip_probe1(int pci_bus, int pci_devfn, outl(0x0201F078, ioaddr + 0xB8); /* Turn on autonegotiation. */ } break; - case MX98713: case COMPEX9881: + case COMPEX9881: outl(0x00000000, ioaddr + CSR6); outl(0x000711C0, ioaddr + CSR14); /* Turn on NWay. */ outl(0x00000001, ioaddr + CSR13); break; - case MX98715: case MX98725: + case MX98713: case MX98715: case MX98725: outl(0x01a80000, ioaddr + CSR6); outl(0xFFFFFFFF, ioaddr + CSR14); outl(0x00001000, ioaddr + CSR12); break; case COMET: - /* No initialization necessary. */ break; } - if (tulip_tbl[chip_idx].flags & HAS_PWRDWN) - pcibios_write_config_dword(pci_bus, pci_devfn, 0x40, 0x40000000); - - return dev; + if (tp->flags & HAS_PWRDWN) + pci_write_config_dword(tp->pci_dev, 0x40, 0x40000000); } + /* Serial EEPROM section. */ /* The main routine to parse the very complicated SROM structure. Search www.digital.com for "21X4 SROM" to get details. This code is very complex, and will require changes to support - additional cards, so I'll be verbose about what is going on. + additional cards, so I will be verbose about what is going on. */ -/* Known cards that have old-style EEPROMs. */ +/* Known cards that have old-style EEPROMs. + Writing this table is described at + http://www.scyld.com/network/tulip-media.html +*/ static struct fixups { char *name; unsigned char addr0, addr1, addr2; @@ -1051,14 +1112,15 @@ static const char * block_name[] = {"21140 non-MII", "21140 MII PHY", #define get_u16(ptr) (((u8*)(ptr))[0] + (((u8*)(ptr))[1]<<8)) #endif -static void parse_eeprom(struct device *dev) +static void parse_eeprom(struct net_device *dev) { /* The last media info list parsed, for multiport boards. */ static struct mediatable *last_mediatable = NULL; static unsigned char *last_ee_data = NULL; static int controller_index = 0; struct tulip_private *tp = (struct tulip_private *)dev->priv; - unsigned char *ee_data = tp->eeprom; + unsigned char *p, *ee_data = tp->eeprom; + int new_advertise = 0; int i; tp->mtable = 0; @@ -1079,59 +1141,76 @@ static void parse_eeprom(struct device *dev) } else printk(KERN_INFO "%s: Missing EEPROM, this interface may " "not work correctly!\n", - dev->name); + dev->name); return; } - /* Do a fix-up based on the vendor half of the station address prefix. */ - for (i = 0; eeprom_fixups[i].name; i++) { - if (dev->dev_addr[0] == eeprom_fixups[i].addr0 - && dev->dev_addr[1] == eeprom_fixups[i].addr1 - && dev->dev_addr[2] == eeprom_fixups[i].addr2) { - if (dev->dev_addr[2] == 0xE8 && ee_data[0x1a] == 0x55) - i++; /* An Accton EN1207, not an outlaw Maxtech. */ - memcpy(ee_data + 26, eeprom_fixups[i].newtable, - sizeof(eeprom_fixups[i].newtable)); - printk(KERN_INFO "%s: Old format EEPROM on '%s' board. Using" - " substitute media control info.\n", - dev->name, eeprom_fixups[i].name); - break; + /* Do a fix-up based on the vendor half of the station address. */ + for (i = 0; eeprom_fixups[i].name; i++) { + if (dev->dev_addr[0] == eeprom_fixups[i].addr0 + && dev->dev_addr[1] == eeprom_fixups[i].addr1 + && dev->dev_addr[2] == eeprom_fixups[i].addr2) { + if (dev->dev_addr[2] == 0xE8 && ee_data[0x1a] == 0x55) + i++; /* An Accton EN1207, not an outlaw Maxtech. */ + memcpy(ee_data + 26, eeprom_fixups[i].newtable, + sizeof(eeprom_fixups[i].newtable)); + printk(KERN_INFO "%s: Old format EEPROM on '%s' board.\n" + KERN_INFO "%s: Using substitute media control info.\n", + dev->name, eeprom_fixups[i].name, dev->name); + break; + } + } + if (eeprom_fixups[i].name == NULL) { /* No fixup found. */ + printk(KERN_INFO "%s: Old style EEPROM with no media selection " + "information.\n", + dev->name); + return; } - } - if (eeprom_fixups[i].name == NULL) { /* No fixup found. */ - printk(KERN_INFO "%s: Old style EEPROM with no media selection " - "information.\n", - dev->name); - return; - } } controller_index = 0; - if (ee_data[19] > 1) { /* Multiport board. */ + if (ee_data[19] > 1) { + struct net_device *prev_dev; + struct tulip_private *otp; + /* This is a multiport board. The probe order may be "backwards", so + we patch up already found devices. */ last_ee_data = ee_data; + for (prev_dev = tp->next_module; prev_dev; prev_dev = otp->next_module) { + otp = (struct tulip_private *)prev_dev->priv; + if (otp->eeprom[0] == 0xff && otp->mtable == 0) { + parse_eeprom(prev_dev); + start_link(prev_dev); + } else + break; + } + controller_index = 0; } subsequent_board: + p = (void *)ee_data + ee_data[27 + controller_index*3]; if (ee_data[27] == 0) { /* No valid media table. */ } else if (tp->chip_id == DC21041) { - unsigned char *p = (void *)ee_data + ee_data[27 + controller_index*3]; int media = get_u16(p); int count = p[2]; p += 3; printk(KERN_INFO "%s: 21041 Media table, default media %4.4x (%s).\n", dev->name, media, - media & 0x0800 ? "Autosense" : medianame[media & 15]); + media & 0x0800 ? "Autosense" : medianame[media & MEDIA_MASK]); for (i = 0; i < count; i++) { - unsigned char media_code = *p++; - if (media_code & 0x40) + unsigned char media_block = *p++; + int media_code = media_block & MEDIA_MASK; + if (media_block & 0x40) p += 6; + switch(media_code) { + case 0: new_advertise |= 0x0020; break; + case 4: new_advertise |= 0x0040; break; + } printk(KERN_INFO "%s: 21041 media #%d, %s.\n", - dev->name, media_code & 15, medianame[media_code & 15]); + dev->name, media_code, medianame[media_code]); } } else { - unsigned char *p = (void *)ee_data + ee_data[27]; unsigned char csr12dir = 0; - int count, new_advertise = 0; + int count; struct mediatable *mtable; u16 media = get_u16(p); @@ -1152,7 +1231,7 @@ subsequent_board: mtable->csr15dir = mtable->csr15val = 0; printk(KERN_INFO "%s: EEPROM default media type %s.\n", dev->name, - media & 0x0800 ? "Autosense" : medianame[media & 15]); + media & 0x0800 ? "Autosense" : medianame[media & MEDIA_MASK]); for (i = 0; i < count; i++) { struct medialeaf *leaf = &mtable->mleaf[i]; @@ -1164,16 +1243,28 @@ subsequent_board: mtable->has_mii = 1; p += 4; } else { - leaf->type = p[1]; - if (p[1] == 0x05) { - mtable->has_reset = i; - leaf->media = p[2] & 0x0f; - } else if (p[1] & 1) { + switch(leaf->type = p[1]) { + case 5: + mtable->has_reset = i + 1; /* Assure non-zero */ + /* Fall through */ + case 6: + leaf->media = 31; + break; + case 1: case 3: mtable->has_mii = 1; leaf->media = 11; - } else { + break; + case 2: + if ((p[2] & 0x3f) == 0) { + u32 base15 = (p[2] & 0x40) ? get_u16(p + 7) : 0x0008; + u16 *p1 = (u16 *)(p + (p[2] & 0x40 ? 9 : 3)); + mtable->csr15dir = (get_unaligned(p1 + 0)<<16) + base15; + mtable->csr15val = (get_unaligned(p1 + 1)<<16) + base15; + } + /* Fall through. */ + case 0: case 4: mtable->has_nonmii = 1; - leaf->media = p[2] & 0x0f; + leaf->media = p[2] & MEDIA_MASK; switch (leaf->media) { case 0: new_advertise |= 0x0020; break; case 4: new_advertise |= 0x0040; break; @@ -1181,36 +1272,30 @@ subsequent_board: case 5: new_advertise |= 0x0100; break; case 6: new_advertise |= 0x0200; break; } - if (p[1] == 2 && leaf->media == 0) { - if (p[2] & 0x40) { - u32 base15 = get_unaligned((u16*)&p[7]); - mtable->csr15dir = - (get_unaligned((u16*)&p[9])<<16) + base15; - mtable->csr15val = - (get_unaligned((u16*)&p[11])<<16) + base15; - } else { - mtable->csr15dir = get_unaligned((u16*)&p[3])<<16; - mtable->csr15val = get_unaligned((u16*)&p[5])<<16; - } - } + break; + default: + leaf->media = 19; } leaf->leafdata = p + 2; p += (p[0] & 0x3f) + 1; } - if (tulip_debug > 1 && leaf->media == 11) { + if ((tp->msg_level & NETIF_MSG_LINK) && + leaf->media == 11) { unsigned char *bp = leaf->leafdata; printk(KERN_INFO "%s: MII interface PHY %d, setup/reset " "sequences %d/%d long, capabilities %2.2x %2.2x.\n", dev->name, bp[0], bp[1], bp[2 + bp[1]*2], bp[5 + bp[2 + bp[1]*2]*2], bp[4 + bp[2 + bp[1]*2]*2]); } - printk(KERN_INFO "%s: Index #%d - Media %s (#%d) described " - "by a %s (%d) block.\n", - dev->name, i, medianame[leaf->media], leaf->media, - block_name[leaf->type], leaf->type); + if (tp->msg_level & NETIF_MSG_PROBE) + printk(KERN_INFO "%s: Index #%d - Media %s (#%d) described " + "by a %s (%d) block.\n", + dev->name, i, medianame[leaf->media], leaf->media, + leaf->type < 6 ? block_name[leaf->type] : "UNKNOWN", + leaf->type); } if (new_advertise) - tp->to_advertise = new_advertise; + tp->sym_advertise = new_advertise; } } /* Reading a serial EEPROM is a "bit" grungy, but we work our way through:->.*/ @@ -1225,7 +1310,7 @@ subsequent_board: #define EE_ENB (0x4800 | EE_CS) /* Delay between EEPROM clock transitions. - Even at 33Mhz current PCI implementations don't overrun the EEPROM clock. + Even at 33Mhz current PCI implementations do not overrun the EEPROM clock. We add a bus turn-around to insure that this remains true. */ #define eeprom_delay() inl(ee_addr) @@ -1253,6 +1338,7 @@ static int read_eeprom(long ioaddr, int location, int addr_len) retval = (retval << 1) | ((inl(ee_addr) & EE_DATA_READ) ? 1 : 0); } outl(EE_ENB, ee_addr); + eeprom_delay(); for (i = 16; i > 0; i--) { outl(EE_ENB | EE_SHIFT_CLK, ee_addr); @@ -1287,36 +1373,42 @@ static int read_eeprom(long ioaddr, int location, int addr_len) #define MDIO_ENB_IN 0x40000 #define MDIO_DATA_READ 0x80000 -static int mdio_read(struct device *dev, int phy_id, int location) +static const unsigned char comet_miireg2offset[32] = { + 0xB4, 0xB8, 0xBC, 0xC0, 0xC4, 0xC8, 0xCC, 0, 0,0,0,0, 0,0,0,0, + 0,0xD0,0,0, 0,0,0,0, 0,0,0,0, 0, 0xD4, 0xD8, 0xDC, }; + +static int mdio_read(struct net_device *dev, int phy_id, int location) { struct tulip_private *tp = (struct tulip_private *)dev->priv; int i; - int read_cmd = (0xf6 << 10) | (phy_id << 5) | location; + int read_cmd = (0xf6 << 10) | ((phy_id & 0x1f) << 5) | location; int retval = 0; long ioaddr = dev->base_addr; long mdio_addr = ioaddr + CSR9; + unsigned long flags; + + if (location & ~0x1f) + return 0xffff; + if (tp->chip_id == COMET && phy_id == 30) { + if (comet_miireg2offset[location]) + return inl(ioaddr + comet_miireg2offset[location]); + return 0xffff; + } + + spin_lock_irqsave(&tp->mii_lock, flags); if (tp->chip_id == LC82C168) { int i = 1000; outl(0x60020000 + (phy_id<<23) + (location<<18), ioaddr + 0xA0); inl(ioaddr + 0xA0); inl(ioaddr + 0xA0); + inl(ioaddr + 0xA0); + inl(ioaddr + 0xA0); while (--i > 0) if ( ! ((retval = inl(ioaddr + 0xA0)) & 0x80000000)) - return retval & 0xffff; - return 0xffff; - } - - if (tp->chip_id == COMET) { - if (phy_id == 1) { - if (location < 7) - return inl(ioaddr + 0xB4 + (location<<2)); - else if (location == 17) - return inl(ioaddr + 0xD0); - else if (location >= 29 && location <= 31) - return inl(ioaddr + 0xD4 + ((location-29)<<2)); - } - return 0xffff; + break; + spin_unlock_irqrestore(&tp->mii_lock, flags); + return retval & 0xffff; } /* Establish sync by sending at least 32 logic ones. */ @@ -1343,17 +1435,29 @@ static int mdio_read(struct device *dev, int phy_id, int location) outl(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); mdio_delay(); } + spin_unlock_irqrestore(&tp->mii_lock, flags); return (retval>>1) & 0xffff; } -static void mdio_write(struct device *dev, int phy_id, int location, int value) +static void mdio_write(struct net_device *dev, int phy_id, int location, int val) { struct tulip_private *tp = (struct tulip_private *)dev->priv; int i; - int cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value; + int cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | (val & 0xffff); long ioaddr = dev->base_addr; long mdio_addr = ioaddr + CSR9; + unsigned long flags; + + if (location & ~0x1f) + return; + + if (tp->chip_id == COMET && phy_id == 30) { + if (comet_miireg2offset[location]) + outl(val, ioaddr + comet_miireg2offset[location]); + return; + } + spin_lock_irqsave(&tp->mii_lock, flags); if (tp->chip_id == LC82C168) { int i = 1000; outl(cmd, ioaddr + 0xA0); @@ -1361,18 +1465,7 @@ static void mdio_write(struct device *dev, int phy_id, int location, int value) if ( ! (inl(ioaddr + 0xA0) & 0x80000000)) break; while (--i > 0); - return; - } - - if (tp->chip_id == COMET) { - if (phy_id != 1) - return; - if (location < 7) - outl(value, ioaddr + 0xB4 + (location<<2)); - else if (location == 17) - outl(value, ioaddr + 0xD0); - else if (location >= 29 && location <= 31) - outl(value, ioaddr + 0xD4 + ((location-29)<<2)); + spin_unlock_irqrestore(&tp->mii_lock, flags); return; } @@ -1398,21 +1491,21 @@ static void mdio_write(struct device *dev, int phy_id, int location, int value) outl(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr); mdio_delay(); } + spin_unlock_irqrestore(&tp->mii_lock, flags); return; } static int -tulip_open(struct device *dev) +tulip_open(struct net_device *dev) { struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; int next_tick = 3*HZ; - int i; /* Wake the chip from sleep/snooze mode. */ if (tp->flags & HAS_PWRDWN) - pcibios_write_config_dword(tp->pci_bus, tp->pci_devfn, 0x40, 0); + pci_write_config_dword(tp->pci_dev, 0x40, 0); /* On some chip revs we must set the MII/SYM port before the reset!? */ if (tp->mii_cnt || (tp->mtable && tp->mtable->has_mii)) @@ -1421,67 +1514,93 @@ tulip_open(struct device *dev) /* Reset the chip, holding bit 0 set at least 50 PCI cycles. */ outl(0x00000001, ioaddr + CSR0); - if (request_irq(dev->irq, &tulip_interrupt, SA_SHIRQ, dev->name, dev)) - return -EAGAIN; MOD_INC_USE_COUNT; + /* This would be done after interrupts are initialized, but we do not want + to frob the transceiver only to fail later. */ + if (request_irq(dev->irq, &tulip_interrupt, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; + return -EAGAIN; + } + /* Deassert reset. Wait the specified 50 PCI cycles after a reset by initializing Tx and Rx queues and the address filter list. */ outl(tp->csr0, ioaddr + CSR0); - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_IFUP) printk(KERN_DEBUG "%s: tulip_open() irq %d.\n", dev->name, dev->irq); tulip_init_ring(dev); -#if 0 if (tp->chip_id == PNIC2) { - u32 addr_low = cpu_to_le32(get_unaligned((u32 *)dev->dev_addr)); - u32 addr_high = cpu_to_le16(get_unaligned((u16 *)(dev->dev_addr+4))); - addr_high = (dev->dev_addr[4]<<8) + (dev->dev_addr[5]<<0); - outl((dev->dev_addr[0]<<8) + dev->dev_addr[1] + - (dev->dev_addr[2]<<24) + (dev->dev_addr[3]<<16), + u32 addr_high = (dev->dev_addr[1]<<8) + (dev->dev_addr[0]<<0); + /* This address setting does not appear to impact chip operation?? */ + outl((dev->dev_addr[5]<<8) + dev->dev_addr[4] + + (dev->dev_addr[3]<<24) + (dev->dev_addr[2]<<16), ioaddr + 0xB0); outl(addr_high + (addr_high<<16), ioaddr + 0xB8); } -#endif if (tp->flags & MC_HASH_ONLY) { u32 addr_low = cpu_to_le32(get_unaligned((u32 *)dev->dev_addr)); - u32 addr_high = cpu_to_le32(get_unaligned((u16 *)(dev->dev_addr+4))); - if (tp->chip_id == AX88140) { + u32 addr_high = cpu_to_le16(get_unaligned((u16 *)(dev->dev_addr+4))); + if (tp->flags & IS_ASIX) { outl(0, ioaddr + CSR13); outl(addr_low, ioaddr + CSR14); outl(1, ioaddr + CSR13); outl(addr_high, ioaddr + CSR14); - } else if (tp->chip_id == COMET) { + } else if (tp->flags & COMET_MAC_ADDR) { outl(addr_low, ioaddr + 0xA4); outl(addr_high, ioaddr + 0xA8); outl(0, ioaddr + 0xAC); outl(0, ioaddr + 0xB0); } - } else { - /* This is set_rx_mode(), but without starting the transmitter. */ - u16 *eaddrs = (u16 *)dev->dev_addr; - u16 *setup_frm = &tp->setup_frame[15*6]; - - /* 21140 bug: you must add the broadcast address. */ - memset(tp->setup_frame, 0xff, sizeof(tp->setup_frame)); - /* Fill the final entry of the table with our physical address. */ - *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0]; - *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1]; - *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2]; - /* Put the setup frame on the Tx list. */ - tp->tx_ring[0].length = cpu_to_le32(0x08000000 | 192); - tp->tx_ring[0].buffer1 = virt_to_le32desc(tp->setup_frame); - tp->tx_ring[0].status = cpu_to_le32(DescOwned); - - tp->cur_tx++; } outl(virt_to_bus(tp->rx_ring), ioaddr + CSR3); outl(virt_to_bus(tp->tx_ring), ioaddr + CSR4); + if ( ! tp->full_duplex_lock) + tp->full_duplex = 0; + init_media(dev); + if (media_cap[dev->if_port] & MediaIsMII) + check_duplex(dev); + set_rx_mode(dev); + + /* Start the Tx to process setup frame. */ + outl(tp->csr6, ioaddr + CSR6); + outl(tp->csr6 | TxOn, ioaddr + CSR6); + + netif_start_tx_queue(dev); + + /* Enable interrupts by setting the interrupt mask. */ + outl(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR5); + outl(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7); + outl(tp->csr6 | TxOn | RxOn, ioaddr + CSR6); + outl(0, ioaddr + CSR2); /* Rx poll demand */ + + if (tp->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Done tulip_open(), CSR0 %8.8x, CSR5 %8.8x CSR6 " + "%8.8x.\n", dev->name, (int)inl(ioaddr + CSR0), + (int)inl(ioaddr + CSR5), (int)inl(ioaddr + CSR6)); + + /* Set the timer to switch to check for link beat and perhaps switch + to an alternate media type. */ + init_timer(&tp->timer); + tp->timer.expires = jiffies + next_tick; + tp->timer.data = (unsigned long)dev; + tp->timer.function = tulip_tbl[tp->chip_id].media_timer; + add_timer(&tp->timer); + + return 0; +} + +static void init_media(struct net_device *dev) +{ + struct tulip_private *tp = (struct tulip_private *)dev->priv; + long ioaddr = dev->base_addr; + int i; + tp->saved_if_port = dev->if_port; if (dev->if_port == 0) dev->if_port = tp->default_port; @@ -1501,7 +1620,7 @@ tulip_open(struct device *dev) } } if ((tp->mtable->defaultmedia & 0x0800) == 0) { - int looking_for = tp->mtable->defaultmedia & 15; + int looking_for = tp->mtable->defaultmedia & MEDIA_MASK; for (i = 0; i < tp->mtable->leafcount; i++) if (tp->mtable->mleaf[i].media == looking_for) { printk(KERN_INFO "%s: Using EEPROM-set media %s.\n", @@ -1518,13 +1637,27 @@ media_picked: tp->csr6 = 0; tp->cur_index = i; tp->nwayset = 0; - if (dev->if_port == 0 && tp->chip_id == DC21041) { - tp->nway = 1; + + if (dev->if_port) { + if (tp->chip_id == DC21143 && + (media_cap[dev->if_port] & MediaIsMII)) { + /* We must reset the media CSRs when we force-select MII mode. */ + outl(0x0000, ioaddr + CSR13); + outl(0x0000, ioaddr + CSR14); + outl(0x0008, ioaddr + CSR15); + } + select_media(dev, 1); + return; } - if (dev->if_port == 0 && tp->chip_id == DC21142) { + switch(tp->chip_id) { + case DC21041: + /* tp->nway = 1;*/ + nway_start(dev); + break; + case DC21142: if (tp->mii_cnt) { select_media(dev, 1); - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_INFO "%s: Using MII transceiver %d, status " "%4.4x.\n", dev->name, tp->phys[0], mdio_read(dev, tp->phys[0], 1)); @@ -1534,13 +1667,15 @@ media_picked: outl(0x0000, ioaddr + CSR13); outl(0x0000, ioaddr + CSR14); } else - t21142_start_nway(dev); - } else if (tp->chip_id == PNIC2) { - t21142_start_nway(dev); - } else if (tp->chip_id == LC82C168 && ! tp->medialock) { + nway_start(dev); + break; + case PNIC2: + nway_start(dev); + break; + case LC82C168: if (tp->mii_cnt) { dev->if_port = 11; - tp->csr6 = 0x814C0000 | (tp->full_duplex ? 0x0200 : 0); + tp->csr6 = 0x814C0000 | (tp->full_duplex ? FullDuplex : 0); outl(0x0001, ioaddr + CSR15); } else if (inl(ioaddr + CSR5) & TPLnkPass) pnic_do_nway(dev); @@ -1550,65 +1685,39 @@ media_picked: tp->csr6 = 0x00420000; outl(0x0001B078, ioaddr + 0xB8); outl(0x0201B078, ioaddr + 0xB8); - next_tick = 1*HZ; } - } else if ((tp->chip_id == MX98713 || tp->chip_id == COMPEX9881) - && ! tp->medialock) { + break; + case MX98713: case COMPEX9881: dev->if_port = 0; - tp->csr6 = 0x01880000 | (tp->full_duplex ? 0x0200 : 0); + tp->csr6 = 0x01880000 | (tp->full_duplex ? FullDuplex : 0); outl(0x0f370000 | inw(ioaddr + 0x80), ioaddr + 0x80); - } else if (tp->chip_id == MX98715 || tp->chip_id == MX98725) { + break; + case MX98715: case MX98725: /* Provided by BOLO, Macronix - 12/10/1998. */ dev->if_port = 0; - tp->csr6 = 0x01a80200; + tp->csr6 = 0x01a80000 | FullDuplex; outl(0x0f370000 | inw(ioaddr + 0x80), ioaddr + 0x80); outl(0x11000 | inw(ioaddr + 0xa0), ioaddr + 0xa0); - } else if (tp->chip_id == DC21143 && - media_cap[dev->if_port] & MediaIsMII) { - /* We must reset the media CSRs when we force-select MII mode. */ - outl(0x0000, ioaddr + CSR13); - outl(0x0000, ioaddr + CSR14); - outl(0x0008, ioaddr + CSR15); - } else if (tp->chip_id == COMET) { - dev->if_port = 0; + break; + case COMET: case CONEXANT: + /* Enable automatic Tx underrun recovery. */ + outl(inl(ioaddr + 0x88) | 1, ioaddr + 0x88); + dev->if_port = tp->mii_cnt ? 11 : 0; tp->csr6 = 0x00040000; - } else if (tp->chip_id == AX88140) { + break; + case AX88140: case AX88141: tp->csr6 = tp->mii_cnt ? 0x00040100 : 0x00000100; - } else + break; + default: select_media(dev, 1); - - /* Start the chip's Tx to process setup frame. */ - outl(tp->csr6, ioaddr + CSR6); - outl(tp->csr6 | 0x2000, ioaddr + CSR6); - - dev->tbusy = 0; - tp->interrupt = 0; - dev->start = 1; - - /* Enable interrupts by setting the interrupt mask. */ - outl(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR5); - outl(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7); - outl(tp->csr6 | 0x2002, ioaddr + CSR6); - outl(0, ioaddr + CSR2); /* Rx poll demand */ - - if (tulip_debug > 2) { - printk(KERN_DEBUG "%s: Done tulip_open(), CSR0 %8.8x, CSR5 %8.8x CSR6 %8.8x.\n", - dev->name, inl(ioaddr + CSR0), inl(ioaddr + CSR5), - inl(ioaddr + CSR6)); } - /* Set the timer to switch to check for link beat and perhaps switch - to an alternate media type. */ - init_timer(&tp->timer); - tp->timer.expires = RUN_AT(next_tick); - tp->timer.data = (unsigned long)dev; - tp->timer.function = tulip_tbl[tp->chip_id].media_timer; - add_timer(&tp->timer); - - return 0; } -/* Set up the transceiver control registers for the selected media type. */ -static void select_media(struct device *dev, int startup) +/* Set up the transceiver control registers for the selected media type. + STARTUP indicates to reset the transceiver. It is set to '2' for + the initial card detection, and '1' during resume or open(). +*/ +static void select_media(struct net_device *dev, int startup) { long ioaddr = dev->base_addr; struct tulip_private *tp = (struct tulip_private *)dev->priv; @@ -1619,9 +1728,12 @@ static void select_media(struct device *dev, int startup) if (mtable) { struct medialeaf *mleaf = &mtable->mleaf[tp->cur_index]; unsigned char *p = mleaf->leafdata; + if (tp->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Media table type %d.\n", + dev->name, mleaf->type); switch (mleaf->type) { case 0: /* 21140 non-MII xcvr. */ - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: Using a 21140 non-MII transceiver" " with control setting %2.2x.\n", dev->name, p[1]); @@ -1637,20 +1749,20 @@ static void select_media(struct device *dev, int startup) for (i = 0; i < 5; i++) setup[i] = get_u16(&p[i*2 + 1]); - dev->if_port = p[0] & 15; + dev->if_port = p[0] & MEDIA_MASK; if (media_cap[dev->if_port] & MediaAlwaysFD) tp->full_duplex = 1; if (startup && mtable->has_reset) { - struct medialeaf *rleaf = &mtable->mleaf[mtable->has_reset]; + struct medialeaf *rleaf = &mtable->mleaf[mtable->has_reset-1]; unsigned char *rst = rleaf->leafdata; - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: Resetting the transceiver.\n", dev->name); for (i = 0; i < rst[0]; i++) outl(get_u16(rst + 1 + (i<<1)) << 16, ioaddr + CSR15); } - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: 21143 non-MII %s transceiver control " "%4.4x/%4.4x.\n", dev->name, medianame[dev->if_port], setup[0], setup[1]); @@ -1666,7 +1778,7 @@ static void select_media(struct device *dev, int startup) outl(csr13val, ioaddr + CSR13); } else { csr13val = 1; - csr14val = 0x0003FF7F; + csr14val = 0x0003FFFF; csr15dir = (setup[0]<<16) | 0x0008; csr15val = (setup[1]<<16) | 0x0008; if (dev->if_port <= 4) @@ -1679,11 +1791,11 @@ static void select_media(struct device *dev, int startup) outl(csr15val, ioaddr + CSR15); /* Data */ if (startup) outl(csr13val, ioaddr + CSR13); } - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: Setting CSR15 to %8.8x/%8.8x.\n", dev->name, csr15dir, csr15val); if (mleaf->type == 4) - new_csr6 = 0x82020000 | ((setup[2] & 0x71) << 18); + new_csr6 = 0x820A0000 | ((setup[2] & 0x71) << 18); else new_csr6 = 0x82420000; break; @@ -1692,7 +1804,6 @@ static void select_media(struct device *dev, int startup) int phy_num = p[0]; int init_length = p[1]; u16 *misc_info; - u16 to_advertise; dev->if_port = 11; new_csr6 = 0x020E0000; @@ -1719,13 +1830,15 @@ static void select_media(struct device *dev, int startup) for (i = 0; i < init_length; i++) outl(init_sequence[i], ioaddr + CSR12); } - to_advertise = (get_u16(&misc_info[1]) & tp->to_advertise) | 1; - tp->advertising[phy_num] = to_advertise; - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: Advertising %4.4x on PHY %d (%d).\n", - dev->name, to_advertise, phy_num, tp->phys[phy_num]); - /* Bogus: put in by a committee? */ - mdio_write(dev, tp->phys[phy_num], 4, to_advertise); + tp->advertising[phy_num] = get_u16(&misc_info[1]) | 1; + if (startup < 2) { + if (tp->mii_advertise == 0) + tp->mii_advertise = tp->advertising[phy_num]; + if (tp->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Advertising %4.4x on MII %d.\n", + dev->name, tp->mii_advertise, tp->phys[phy_num]); + mdio_write(dev, tp->phys[phy_num], 4, tp->mii_advertise); + } break; } default: @@ -1733,16 +1846,16 @@ static void select_media(struct device *dev, int startup) dev->name, mleaf->type); new_csr6 = 0x020E0000; } - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: Using media type %s, CSR12 is %2.2x.\n", dev->name, medianame[dev->if_port], - inl(ioaddr + CSR12) & 0xff); + (int)inl(ioaddr + CSR12) & 0xff); } else if (tp->chip_id == DC21041) { int port = dev->if_port <= 4 ? dev->if_port : 0; - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: 21041 using media %s, CSR12 is %4.4x.\n", dev->name, medianame[port == 3 ? 12: port], - inl(ioaddr + CSR12)); + (int)inl(ioaddr + CSR12)); outl(0x00000000, ioaddr + CSR13); /* Reset the serial interface */ outl(t21041_csr14[port], ioaddr + CSR14); outl(t21041_csr15[port], ioaddr + CSR15); @@ -1751,9 +1864,10 @@ static void select_media(struct device *dev, int startup) } else if (tp->chip_id == LC82C168) { if (startup && ! tp->medialock) dev->if_port = tp->mii_cnt ? 11 : 0; - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: PNIC PHY status is %3.3x, media %s.\n", - dev->name, inl(ioaddr + 0xB8), medianame[dev->if_port]); + dev->name, (int)inl(ioaddr + 0xB8), + medianame[dev->if_port]); if (tp->mii_cnt) { new_csr6 = 0x810C0000; outl(0x0001, ioaddr + CSR15); @@ -1777,7 +1891,7 @@ static void select_media(struct device *dev, int startup) } else if (tp->chip_id == DC21040) { /* 21040 */ /* Turn on the xcvr interface. */ int csr12 = inl(ioaddr + CSR12); - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: 21040 media type is %s, CSR12 is %2.2x.\n", dev->name, medianame[dev->if_port], csr12); if (media_cap[dev->if_port] & MediaAlwaysFD) @@ -1800,17 +1914,18 @@ static void select_media(struct device *dev, int startup) if (media_cap[dev->if_port] & MediaIsMII) { new_csr6 = 0x020E0000; } else if (media_cap[dev->if_port] & MediaIsFx) { - new_csr6 = 0x028600000; + new_csr6 = 0x02860000; } else - new_csr6 = 0x038600000; - if (tulip_debug > 1) + new_csr6 = 0x038E0000; + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: No media description table, assuming " "%s transceiver, CSR12 %2.2x.\n", dev->name, medianame[dev->if_port], - inl(ioaddr + CSR12)); + (int)inl(ioaddr + CSR12)); } - tp->csr6 = new_csr6 | (tp->csr6 & 0xfdff) | (tp->full_duplex ? 0x0200 : 0); + tp->csr6 = new_csr6 | (tp->csr6 & 0xfdff) | + (tp->full_duplex ? FullDuplex : 0); return; } @@ -1820,7 +1935,7 @@ static void select_media(struct device *dev, int startup) Return 0 if everything is OK. Return < 0 if the transceiver is missing or has no link beat. */ -static int check_duplex(struct device *dev) +static int check_duplex(struct net_device *dev) { long ioaddr = dev->base_addr; struct tulip_private *tp = (struct tulip_private *)dev->priv; @@ -1828,36 +1943,37 @@ static int check_duplex(struct device *dev) if (tp->full_duplex_lock) return 0; - mii_reg1 = mdio_read(dev, tp->phys[0], 1); mii_reg5 = mdio_read(dev, tp->phys[0], 5); - if (tulip_debug > 1) - printk(KERN_INFO "%s: MII status %4.4x, Link partner report " - "%4.4x.\n", dev->name, mii_reg1, mii_reg5); - if (mii_reg1 == 0xffff) + negotiated = mii_reg5 & tp->mii_advertise; + + if (tp->msg_level & NETIF_MSG_TIMER) + printk(KERN_INFO "%s: MII link partner %4.4x, negotiated %4.4x.\n", + dev->name, mii_reg5, negotiated); + if (mii_reg5 == 0xffff) return -2; - if ((mii_reg1 & 0x0004) == 0) { + if ((mii_reg5 & 0x4000) == 0 && /* No negotiation. */ + ((mii_reg1 = mdio_read(dev, tp->phys[0], 1)) & 0x0004) == 0) { int new_reg1 = mdio_read(dev, tp->phys[0], 1); if ((new_reg1 & 0x0004) == 0) { - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_TIMER) printk(KERN_INFO "%s: No link beat on the MII interface," " status %4.4x.\n", dev->name, new_reg1); return -1; } } - negotiated = mii_reg5 & tp->advertising[0]; duplex = ((negotiated & 0x0300) == 0x0100 || (negotiated & 0x00C0) == 0x0040); /* 100baseTx-FD or 10T-FD, but not 100-HD */ if (tp->full_duplex != duplex) { tp->full_duplex = duplex; - if (negotiated & 0x038) /* 100mbps. */ + if (negotiated & 0x0380) /* 100mbps. */ tp->csr6 &= ~0x00400000; - if (tp->full_duplex) tp->csr6 |= 0x0200; - else tp->csr6 &= ~0x0200; - outl(tp->csr6 | 0x0002, ioaddr + CSR6); - outl(tp->csr6 | 0x2002, ioaddr + CSR6); - if (tulip_debug > 0) - printk(KERN_INFO "%s: Setting %s-duplex based on MII" + if (tp->full_duplex) tp->csr6 |= FullDuplex; + else tp->csr6 &= ~FullDuplex; + outl(tp->csr6 | RxOn, ioaddr + CSR6); + outl(tp->csr6 | TxOn | RxOn, ioaddr + CSR6); + if (tp->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO "%s: Setting %s-duplex based on MII " "#%d link partner capability of %4.4x.\n", dev->name, tp->full_duplex ? "full" : "half", tp->phys[0], mii_reg5); @@ -1868,31 +1984,32 @@ static int check_duplex(struct device *dev) static void tulip_timer(unsigned long data) { - struct device *dev = (struct device *)data; + struct net_device *dev = (struct net_device *)data; struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; u32 csr12 = inl(ioaddr + CSR12); int next_tick = 2*HZ; - if (tulip_debug > 2) { + if (tp->msg_level & NETIF_MSG_TIMER) printk(KERN_DEBUG "%s: Media selection tick, %s, status %8.8x mode" " %8.8x SIA %8.8x %8.8x %8.8x %8.8x.\n", - dev->name, medianame[dev->if_port], inl(ioaddr + CSR5), - inl(ioaddr + CSR6), csr12, inl(ioaddr + CSR13), - inl(ioaddr + CSR14), inl(ioaddr + CSR15)); - } + dev->name, medianame[dev->if_port], (int)inl(ioaddr + CSR5), + (int)inl(ioaddr + CSR6), csr12, (int)inl(ioaddr + CSR13), + (int)inl(ioaddr + CSR14), (int)inl(ioaddr + CSR15)); + switch (tp->chip_id) { case DC21040: - if (!tp->medialock && csr12 & 0x0002) { /* Network error */ - printk(KERN_INFO "%s: No link beat found.\n", - dev->name); + if (!tp->medialock && (csr12 & 0x0002)) { /* Network error */ + if (tp->msg_level & NETIF_MSG_TIMER) + printk(KERN_INFO "%s: No link beat found.\n", + dev->name); dev->if_port = (dev->if_port == 2 ? 0 : 2); select_media(dev, 0); dev->trans_start = jiffies; } break; case DC21041: - if (tulip_debug > 2) + if (tp->msg_level & NETIF_MSG_TIMER) printk(KERN_DEBUG "%s: 21041 media tick CSR12 %8.8x.\n", dev->name, csr12); if (tp->medialock) break; @@ -1905,8 +2022,10 @@ static void tulip_timer(unsigned long data) dev->if_port = 2; else dev->if_port = 1; - printk(KERN_INFO "%s: No 21041 10baseT link beat, Media switched to %s.\n", - dev->name, medianame[dev->if_port]); + if (tp->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO "%s: No 21041 10baseT link beat, Media " + "switched to %s.\n", + dev->name, medianame[dev->if_port]); outl(0, ioaddr + CSR13); /* Reset */ outl(t21041_csr14[dev->if_port], ioaddr + CSR14); outl(t21041_csr15[dev->if_port], ioaddr + CSR15); @@ -1921,8 +2040,9 @@ static void tulip_timer(unsigned long data) next_tick = (30*HZ); /* 30 sec. */ tp->mediasense = 0; } else if ((csr12 & 0x0004) == 0) { - printk(KERN_INFO "%s: 21041 media switched to 10baseT.\n", - dev->name); + if (tp->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO "%s: 21041 media switched to 10baseT.\n", + dev->name); dev->if_port = 0; select_media(dev, 0); next_tick = (24*HZ)/10; /* 2.4 sec. */ @@ -1943,10 +2063,10 @@ static void tulip_timer(unsigned long data) /* Not much that can be done. Assume this a generic MII or SYM transceiver. */ next_tick = 60*HZ; - if (tulip_debug > 2) + if (tp->msg_level & NETIF_MSG_TIMER) printk(KERN_DEBUG "%s: network media monitor CSR6 %8.8x " "CSR12 0x%2.2x.\n", - dev->name, inl(ioaddr + CSR6), csr12 & 0xff); + dev->name, (int)inl(ioaddr + CSR6), csr12 & 0xff); break; } mleaf = &tp->mtable->mleaf[tp->cur_index]; @@ -1957,7 +2077,7 @@ static void tulip_timer(unsigned long data) int offset = mleaf->type == 4 ? 5 : 2; s8 bitnum = p[offset]; if (p[offset+1] & 0x80) { - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_TIMER) printk(KERN_DEBUG"%s: Transceiver monitor tick " "CSR12=%#2.2x, no media sense.\n", dev->name, csr12); @@ -1967,7 +2087,7 @@ static void tulip_timer(unsigned long data) } break; } - if (tulip_debug > 2) + if (tp->msg_level & NETIF_MSG_TIMER) printk(KERN_DEBUG "%s: Transceiver monitor tick: CSR12=%#2.2x" " bit %d is %d, expecting %d.\n", dev->name, csr12, (bitnum >> 1) & 7, @@ -1976,9 +2096,9 @@ static void tulip_timer(unsigned long data) /* Check that the specified bit has the proper value. */ if ((bitnum < 0) != ((csr12 & (1 << ((bitnum >> 1) & 7))) != 0)) { - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: Link beat detected for %s.\n", dev->name, - medianame[mleaf->media]); + if (tp->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Link beat detected for %s.\n", + dev->name, medianame[mleaf->media & MEDIA_MASK]); if ((p[2] & 0x61) == 0x01) /* Bogus Znyx board. */ goto actually_mii; break; @@ -1993,15 +2113,15 @@ static void tulip_timer(unsigned long data) dev->if_port = tp->mtable->mleaf[tp->cur_index].media; if (media_cap[dev->if_port] & MediaIsFD) goto select_next_media; /* Skip FD entries. */ - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: No link beat on media %s," " trying transceiver type %s.\n", - dev->name, medianame[mleaf->media & 15], + dev->name, medianame[mleaf->media & MEDIA_MASK], medianame[tp->mtable->mleaf[tp->cur_index].media]); select_media(dev, 0); /* Restart the transmit process. */ - outl(tp->csr6 | 0x0002, ioaddr + CSR6); - outl(tp->csr6 | 0x2002, ioaddr + CSR6); + outl(tp->csr6 | RxOn, ioaddr + CSR6); + outl(tp->csr6 | TxOn | RxOn, ioaddr + CSR6); next_tick = (24*HZ)/10; break; } @@ -2017,45 +2137,45 @@ static void tulip_timer(unsigned long data) } break; } - tp->timer.expires = RUN_AT(next_tick); + tp->timer.expires = jiffies + next_tick; add_timer(&tp->timer); } -/* Handle the 21143 uniquely: do autoselect with NWay, not the EEPROM list - of available transceivers. */ -static void t21142_timer(unsigned long data) +/* Handle internal NWay transceivers uniquely. + These exist on the 21041, 21143 (in SYM mode) and the PNIC2. + */ +static void nway_timer(unsigned long data) { - struct device *dev = (struct device *)data; + struct net_device *dev = (struct net_device *)data; struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; int csr12 = inl(ioaddr + CSR12); int next_tick = 60*HZ; int new_csr6 = 0; - if (tulip_debug > 2) - printk(KERN_INFO"%s: 21143 negotiation status %8.8x, %s.\n", + if (tp->msg_level & NETIF_MSG_TIMER) + printk(KERN_INFO"%s: N-Way autonegotiation status %8.8x, %s.\n", dev->name, csr12, medianame[dev->if_port]); if (media_cap[dev->if_port] & MediaIsMII) { check_duplex(dev); - next_tick = 60*HZ; } else if (tp->nwayset) { - /* Don't screw up a negotiated session! */ - if (tulip_debug > 1) + /* Do not screw up a negotiated session! */ + if (tp->msg_level & NETIF_MSG_TIMER) printk(KERN_INFO"%s: Using NWay-set %s media, csr12 %8.8x.\n", dev->name, medianame[dev->if_port], csr12); } else if (tp->medialock) { ; } else if (dev->if_port == 3) { if (csr12 & 2) { /* No 100mbps link beat, revert to 10mbps. */ - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_INFO"%s: No 21143 100baseTx link beat, %8.8x, " "trying NWay.\n", dev->name, csr12); - t21142_start_nway(dev); + nway_start(dev); next_tick = 3*HZ; } } else if ((csr12 & 0x7000) != 0x5000) { /* Negotiation failed. Search media types. */ - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_INFO"%s: 21143 negotiation failed, status %8.8x.\n", dev->name, csr12); if (!(csr12 & 4)) { /* 10mbps link beat good. */ @@ -2074,15 +2194,15 @@ static void t21142_timer(unsigned long data) outw(8, ioaddr + CSR15); outl(1, ioaddr + CSR13); } - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_INFO"%s: Testing new 21143 media %s.\n", dev->name, medianame[dev->if_port]); - if (new_csr6 != (tp->csr6 & ~0x00D5)) { - tp->csr6 &= 0x00D5; + if (new_csr6 != (tp->csr6 & ~0x20D7)) { + tp->csr6 &= 0x20D7; tp->csr6 |= new_csr6; outl(0x0301, ioaddr + CSR12); - outl(tp->csr6 | 0x0002, ioaddr + CSR6); - outl(tp->csr6 | 0x2002, ioaddr + CSR6); + outl(tp->csr6 | RxOn, ioaddr + CSR6); + outl(tp->csr6 | TxOn | RxOn, ioaddr + CSR6); } next_tick = 3*HZ; } @@ -2093,49 +2213,69 @@ static void t21142_timer(unsigned long data) tulip_tx_timeout(dev); } - tp->timer.expires = RUN_AT(next_tick); + tp->timer.expires = jiffies + next_tick; add_timer(&tp->timer); } -static void t21142_start_nway(struct device *dev) +static void nway_start(struct net_device *dev) { struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; - int csr14 = ((tp->to_advertise & 0x0780) << 9) | - ((tp->to_advertise&0x0020)<<1) | 0xffbf; + int csr14 = ((tp->sym_advertise & 0x0780) << 9) | + ((tp->sym_advertise&0x0020)<<1) | 0xffbf; dev->if_port = 0; tp->nway = tp->mediasense = 1; tp->nwayset = tp->lpar = 0; - if (debug > 1) - printk(KERN_DEBUG "%s: Restarting 21143 autonegotiation, %8.8x.\n", - dev->name, csr14); + if (tp->chip_id == PNIC2) { + tp->csr6 = 0x01000000 | (tp->sym_advertise & 0x0040 ? FullDuplex : 0); + return; + } + if (tp->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Restarting internal NWay autonegotiation, " + "%8.8x.\n", dev->name, csr14); outl(0x0001, ioaddr + CSR13); outl(csr14, ioaddr + CSR14); - tp->csr6 = 0x82420000 | (tp->to_advertise & 0x0040 ? 0x0200 : 0); + tp->csr6 = 0x82420000 | (tp->sym_advertise & 0x0040 ? FullDuplex : 0) + | (tp->csr6 & 0x20ff); outl(tp->csr6, ioaddr + CSR6); if (tp->mtable && tp->mtable->csr15dir) { outl(tp->mtable->csr15dir, ioaddr + CSR15); outl(tp->mtable->csr15val, ioaddr + CSR15); - } else + } else if (tp->chip_id != PNIC2) outw(0x0008, ioaddr + CSR15); - outl(0x1301, ioaddr + CSR12); /* Trigger NWAY. */ + if (tp->chip_id == DC21041) /* Trigger NWAY. */ + outl(0xEF01, ioaddr + CSR12); + else + outl(0x1301, ioaddr + CSR12); } -static void t21142_lnk_change(struct device *dev, int csr5) +static void nway_lnk_change(struct net_device *dev, int csr5) { struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; int csr12 = inl(ioaddr + CSR12); - if (tulip_debug > 1) + if (tp->chip_id == PNIC2) { + if (tp->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO"%s: PNIC-2 link status changed, CSR5/12/14 %8.8x" + " %8.8x, %8.8x.\n", + dev->name, csr12, csr5, (int)inl(ioaddr + CSR14)); + dev->if_port = 5; + tp->lpar = csr12 >> 16; + tp->nwayset = 1; + tp->csr6 = 0x01000000 | (tp->csr6 & 0xffff); + outl(tp->csr6, ioaddr + CSR6); + return; + } + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_INFO"%s: 21143 link status interrupt %8.8x, CSR5 %x, " - "%8.8x.\n", dev->name, csr12, csr5, inl(ioaddr + CSR14)); + "%8.8x.\n", dev->name, csr12, csr5, (int)inl(ioaddr + CSR14)); /* If NWay finished and we have a negotiated partner capability. */ if (tp->nway && !tp->nwayset && (csr12 & 0x7000) == 0x5000) { int setup_done = 0; - int negotiated = tp->to_advertise & (csr12 >> 16); + int negotiated = tp->sym_advertise & (csr12 >> 16); tp->lpar = csr12 >> 16; tp->nwayset = 1; if (negotiated & 0x0100) dev->if_port = 5; @@ -2144,16 +2284,16 @@ static void t21142_lnk_change(struct device *dev, int csr5) else if (negotiated & 0x0020) dev->if_port = 0; else { tp->nwayset = 0; - if ((csr12 & 2) == 0 && (tp->to_advertise & 0x0180)) + if ((csr12 & 2) == 0 && (tp->sym_advertise & 0x0180)) dev->if_port = 3; } tp->full_duplex = (media_cap[dev->if_port] & MediaAlwaysFD) ? 1:0; - if (tulip_debug > 1) { + if (tp->msg_level & NETIF_MSG_LINK) { if (tp->nwayset) printk(KERN_INFO "%s: Switching to %s based on link " "negotiation %4.4x & %4.4x = %4.4x.\n", - dev->name, medianame[dev->if_port], tp->to_advertise, + dev->name, medianame[dev->if_port], tp->sym_advertise, tp->lpar, negotiated); else printk(KERN_INFO "%s: Autonegotiation failed, using %s," @@ -2172,86 +2312,86 @@ static void t21142_lnk_change(struct device *dev, int csr5) } } if ( ! setup_done) { - tp->csr6 = dev->if_port & 1 ? 0x83860000 : 0x82420000; + tp->csr6 = (dev->if_port & 1 ? 0x838E0000 : 0x82420000) + | (tp->csr6 & 0x20ff); if (tp->full_duplex) - tp->csr6 |= 0x0200; + tp->csr6 |= FullDuplex; outl(1, ioaddr + CSR13); } -#if 0 /* Restart shouldn't be needed. */ +#if 0 /* Restart should not be needed. */ outl(tp->csr6 | 0x0000, ioaddr + CSR6); - if (debug > 2) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: Restarting Tx and Rx, CSR5 is %8.8x.\n", dev->name, inl(ioaddr + CSR5)); #endif - outl(tp->csr6 | 0x2002, ioaddr + CSR6); - if (debug > 2) + outl(tp->csr6 | TxOn | RxOn, ioaddr + CSR6); + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: Setting CSR6 %8.8x/%x CSR12 %8.8x.\n", - dev->name, tp->csr6, inl(ioaddr + CSR6), - inl(ioaddr + CSR12)); + dev->name, tp->csr6, (int)inl(ioaddr + CSR6), + (int)inl(ioaddr + CSR12)); } else if ((tp->nwayset && (csr5 & 0x08000000) && (dev->if_port == 3 || dev->if_port == 5) && (csr12 & 2) == 2) || (tp->nway && (csr5 & (TPLnkFail)))) { /* Link blew? Maybe restart NWay. */ del_timer(&tp->timer); - t21142_start_nway(dev); - tp->timer.expires = RUN_AT(3*HZ); + nway_start(dev); + tp->timer.expires = jiffies + 3*HZ; add_timer(&tp->timer); } else if (dev->if_port == 3 || dev->if_port == 5) { - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) /* TIMER? */ printk(KERN_INFO"%s: 21143 %s link beat %s.\n", dev->name, medianame[dev->if_port], (csr12 & 2) ? "failed" : "good"); if ((csr12 & 2) && ! tp->medialock) { del_timer(&tp->timer); - t21142_start_nway(dev); - tp->timer.expires = RUN_AT(3*HZ); + nway_start(dev); + tp->timer.expires = jiffies + 3*HZ; add_timer(&tp->timer); - } + } else if (dev->if_port == 5) + outl(inl(ioaddr + CSR14) & ~0x080, ioaddr + CSR14); } else if (dev->if_port == 0 || dev->if_port == 4) { if ((csr12 & 4) == 0) printk(KERN_INFO"%s: 21143 10baseT link beat good.\n", dev->name); } else if (!(csr12 & 4)) { /* 10mbps link beat good. */ - if (tulip_debug) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_INFO"%s: 21143 10mbps sensed media.\n", dev->name); dev->if_port = 0; } else if (tp->nwayset) { - if (tulip_debug) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_INFO"%s: 21143 using NWay-set %s, csr6 %8.8x.\n", dev->name, medianame[dev->if_port], tp->csr6); } else { /* 100mbps link beat good. */ - if (tulip_debug) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_INFO"%s: 21143 100baseTx sensed media.\n", dev->name); dev->if_port = 3; - tp->csr6 = 0x83860000; + tp->csr6 = 0x838E0000 | (tp->csr6 & 0x20ff); outl(0x0003FF7F, ioaddr + CSR14); outl(0x0301, ioaddr + CSR12); - outl(tp->csr6 | 0x0002, ioaddr + CSR6); - outl(tp->csr6 | 0x2002, ioaddr + CSR6); + outl(tp->csr6 | RxOn, ioaddr + CSR6); + outl(tp->csr6 | RxOn | TxOn, ioaddr + CSR6); } } static void mxic_timer(unsigned long data) { - struct device *dev = (struct device *)data; + struct net_device *dev = (struct net_device *)data; struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; int next_tick = 60*HZ; - if (tulip_debug > 3) { + if (tp->msg_level & NETIF_MSG_TIMER) { printk(KERN_INFO"%s: MXIC negotiation status %8.8x.\n", dev->name, - inl(ioaddr + CSR12)); - } - if (next_tick) { - tp->timer.expires = RUN_AT(next_tick); - add_timer(&tp->timer); + (int)inl(ioaddr + CSR12)); } + tp->timer.expires = jiffies + next_tick; + add_timer(&tp->timer); } -static void pnic_do_nway(struct device *dev) +static void pnic_do_nway(struct net_device *dev) { struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; @@ -2270,26 +2410,27 @@ static void pnic_do_nway(struct device *dev) outl(0x1F868, ioaddr + 0xB8); if (phy_reg & 0x30000000) { tp->full_duplex = 1; - new_csr6 |= 0x00000200; + new_csr6 |= FullDuplex; } - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: PNIC autonegotiated status %8.8x, %s.\n", dev->name, phy_reg, medianame[dev->if_port]); if (tp->csr6 != new_csr6) { tp->csr6 = new_csr6; - outl(tp->csr6 | 0x0002, ioaddr + CSR6); /* Restart Tx */ - outl(tp->csr6 | 0x2002, ioaddr + CSR6); + outl(tp->csr6 | RxOn, ioaddr + CSR6); /* Restart Tx */ + outl(tp->csr6 | TxOn | RxOn, ioaddr + CSR6); dev->trans_start = jiffies; } } } -static void pnic_lnk_change(struct device *dev, int csr5) + +static void pnic_lnk_change(struct net_device *dev, int csr5) { struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; int phy_reg = inl(ioaddr + 0xB8); - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: PNIC link changed state %8.8x, CSR5 %8.8x.\n", dev->name, phy_reg, csr5); if (inl(ioaddr + CSR5) & TPLnkFail) { @@ -2308,7 +2449,7 @@ static void pnic_lnk_change(struct device *dev, int csr5) } static void pnic_timer(unsigned long data) { - struct device *dev = (struct device *)data; + struct net_device *dev = (struct net_device *)data; struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; int next_tick = 60*HZ; @@ -2322,7 +2463,7 @@ static void pnic_timer(unsigned long data) int phy_reg = inl(ioaddr + 0xB8); int csr5 = inl(ioaddr + CSR5); - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_TIMER) printk(KERN_DEBUG "%s: PNIC timer PHY status %8.8x, %s " "CSR5 %8.8x.\n", dev->name, phy_reg, medianame[dev->if_port], csr5); @@ -2334,11 +2475,11 @@ static void pnic_timer(unsigned long data) pnic_do_nway(dev); next_tick = 60*HZ; } else if (csr5 & TPLnkFail) { /* 100baseTx link beat */ - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_DEBUG "%s: %s link beat failed, CSR12 %4.4x, " "CSR5 %8.8x, PHY %3.3x.\n", dev->name, medianame[dev->if_port], csr12, - inl(ioaddr + CSR5), inl(ioaddr + 0xB8)); + (int)inl(ioaddr + CSR5), (int)inl(ioaddr + 0xB8)); next_tick = 3*HZ; if (tp->medialock) { } else if (tp->nwayset && (dev->if_port & 1)) { @@ -2356,10 +2497,10 @@ static void pnic_timer(unsigned long data) } if (tp->csr6 != new_csr6) { tp->csr6 = new_csr6; - outl(tp->csr6 | 0x0002, ioaddr + CSR6); /* Restart Tx */ - outl(tp->csr6 | 0x2002, ioaddr + CSR6); + outl(tp->csr6 | RxOn, ioaddr + CSR6); /* Restart Tx */ + outl(tp->csr6 | RxOn | TxOn, ioaddr + CSR6); dev->trans_start = jiffies; - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_LINK) printk(KERN_INFO "%s: Changing PNIC configuration to %s " "%s-duplex, CSR6 %8.8x.\n", dev->name, medianame[dev->if_port], @@ -2367,36 +2508,45 @@ static void pnic_timer(unsigned long data) } } } - tp->timer.expires = RUN_AT(next_tick); + tp->timer.expires = jiffies + next_tick; add_timer(&tp->timer); } static void comet_timer(unsigned long data) { - struct device *dev = (struct device *)data; + struct net_device *dev = (struct net_device *)data; struct tulip_private *tp = (struct tulip_private *)dev->priv; - long ioaddr = dev->base_addr; int next_tick = 60*HZ; - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_TIMER) printk(KERN_DEBUG "%s: Comet link status %4.4x partner capability " "%4.4x.\n", - dev->name, inl(ioaddr + 0xB8), inl(ioaddr + 0xC8)); - tp->timer.expires = RUN_AT(next_tick); + dev->name, mdio_read(dev, tp->phys[0], 1), + mdio_read(dev, tp->phys[0], 5)); + check_duplex(dev); + tp->timer.expires = jiffies + next_tick; add_timer(&tp->timer); } -static void tulip_tx_timeout(struct device *dev) +static void tulip_tx_timeout(struct net_device *dev) { struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; if (media_cap[dev->if_port] & MediaIsMII) { /* Do nothing -- the media monitor should handle this. */ - if (tulip_debug > 1) - printk(KERN_WARNING "%s: Transmit timeout using MII device.\n", - dev->name); - } else if (tp->chip_id == DC21040) { + int mii_bmsr = mdio_read(dev, tp->phys[0], 1); + if (tp->msg_level & NETIF_MSG_LINK) + printk(KERN_WARNING "%s: Transmit timeout using MII device," + " status %4.4x.\n", + dev->name, mii_bmsr); + if ( ! (mii_bmsr & 0x0004)) { /* No link beat present */ + dev->trans_start = jiffies; + netif_link_down(dev); + return; + } + } else switch (tp->chip_id) { + case DC21040: if ( !tp->medialock && inl(ioaddr + CSR12) & 0x0002) { dev->if_port = (dev->if_port == 2 ? 0 : 2); printk(KERN_INFO "%s: transmit timed out, switching to " @@ -2405,38 +2555,49 @@ static void tulip_tx_timeout(struct device *dev) select_media(dev, 0); } dev->trans_start = jiffies; - return; - } else if (tp->chip_id == DC21041) { + return; /* Note: not break! */ + case DC21041: { int csr12 = inl(ioaddr + CSR12); printk(KERN_WARNING "%s: 21041 transmit timed out, status %8.8x, " "CSR12 %8.8x, CSR13 %8.8x, CSR14 %8.8x, resetting...\n", - dev->name, inl(ioaddr + CSR5), csr12, - inl(ioaddr + CSR13), inl(ioaddr + CSR14)); + dev->name, (int)inl(ioaddr + CSR5), csr12, + (int)inl(ioaddr + CSR13), (int)inl(ioaddr + CSR14)); tp->mediasense = 1; if ( ! tp->medialock) { if (dev->if_port == 1 || dev->if_port == 2) - if (csr12 & 0x0004) { - dev->if_port = 2 - dev->if_port; - } else - dev->if_port = 0; + dev->if_port = (csr12 & 0x0004) ? 2 - dev->if_port : 0; else dev->if_port = 1; select_media(dev, 0); } - } else if (tp->chip_id == DC21140 || tp->chip_id == DC21142 - || tp->chip_id == MX98713 || tp->chip_id == COMPEX9881) { - printk(KERN_WARNING "%s: 21140 transmit timed out, status %8.8x, " + break; + } + case DC21142: + if (tp->nwayset) { + printk(KERN_WARNING "%s: Transmit timed out, status %8.8x, " + "SIA %8.8x %8.8x %8.8x %8.8x, restarting NWay .\n", + dev->name, (int)inl(ioaddr + CSR5), + (int)inl(ioaddr + CSR12), (int)inl(ioaddr + CSR13), + (int)inl(ioaddr + CSR14), (int)inl(ioaddr + CSR15)); + nway_start(dev); + break; + } + /* Fall through. */ + case DC21140: case MX98713: case COMPEX9881: + printk(KERN_WARNING "%s: %s transmit timed out, status %8.8x, " "SIA %8.8x %8.8x %8.8x %8.8x, resetting...\n", - dev->name, inl(ioaddr + CSR5), inl(ioaddr + CSR12), - inl(ioaddr + CSR13), inl(ioaddr + CSR14), inl(ioaddr + CSR15)); + dev->name, tulip_tbl[tp->chip_id].chip_name, + (int)inl(ioaddr + CSR5), (int)inl(ioaddr + CSR12), + (int)inl(ioaddr + CSR13), (int)inl(ioaddr + CSR14), + (int)inl(ioaddr + CSR15)); if ( ! tp->medialock && tp->mtable) { do --tp->cur_index; while (tp->cur_index >= 0 && (media_cap[tp->mtable->mleaf[tp->cur_index].media] & MediaIsFD)); - if (--tp->cur_index < 0) { + if (tp->cur_index < 0) { /* We start again, but should instead look for default. */ tp->cur_index = tp->mtable->leafcount - 1; } @@ -2444,15 +2605,21 @@ static void tulip_tx_timeout(struct device *dev) printk(KERN_WARNING "%s: transmit timed out, switching to %s " "media.\n", dev->name, medianame[dev->if_port]); } - } else { + break; + case PNIC2: + printk(KERN_WARNING "%s: PNIC2 transmit timed out, status %8.8x, " + "CSR6/7 %8.8x / %8.8x CSR12 %8.8x, resetting...\n", + dev->name, (int)inl(ioaddr + CSR5), (int)inl(ioaddr + CSR6), + (int)inl(ioaddr + CSR7), (int)inl(ioaddr + CSR12)); + break; + default: printk(KERN_WARNING "%s: Transmit timed out, status %8.8x, CSR12 " "%8.8x, resetting...\n", - dev->name, inl(ioaddr + CSR5), inl(ioaddr + CSR12)); - dev->if_port = 0; + dev->name, (int)inl(ioaddr + CSR5), (int)inl(ioaddr + CSR12)); } -#if defined(way_too_many_messages) - if (tulip_debug > 3) { +#if defined(way_too_many_messages) && defined(__i386__) + if (tp->msg_level & NETIF_MSG_TXERR) { int i; for (i = 0; i < RX_RING_SIZE; i++) { u8 *buf = (u8 *)(tp->rx_ring[i].buffer1); @@ -2478,11 +2645,13 @@ static void tulip_tx_timeout(struct device *dev) } #endif - /* Stop and restart the chip's Tx processes . */ - outl(tp->csr6 | 0x0002, ioaddr + CSR6); - outl(tp->csr6 | 0x2002, ioaddr + CSR6); + /* Stop and restart the Tx process. + The pwr_event approach of empty/init_rings() may be better... */ + outl(tp->csr6 | RxOn, ioaddr + CSR6); + outl(tp->csr6 | RxOn | TxOn, ioaddr + CSR6); /* Trigger an immediate transmit demand. */ outl(0, ioaddr + CSR1); + outl(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7); dev->trans_start = jiffies; tp->stats.tx_errors++; @@ -2491,38 +2660,39 @@ static void tulip_tx_timeout(struct device *dev) /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ -static void tulip_init_ring(struct device *dev) +static void tulip_init_ring(struct net_device *dev) { struct tulip_private *tp = (struct tulip_private *)dev->priv; int i; - tp->tx_full = 0; + tp->rx_dead = tp->tx_full = 0; tp->cur_rx = tp->cur_tx = 0; tp->dirty_rx = tp->dirty_tx = 0; - tp->susp_rx = 0; - tp->ttimer = 0; - tp->nir = 0; + + tp->rx_buf_sz = dev->mtu + 18; + if (tp->rx_buf_sz < PKT_BUF_SZ) + tp->rx_buf_sz = PKT_BUF_SZ; for (i = 0; i < RX_RING_SIZE; i++) { tp->rx_ring[i].status = 0x00000000; - tp->rx_ring[i].length = cpu_to_le32(PKT_BUF_SZ); + tp->rx_ring[i].length = cpu_to_le32(tp->rx_buf_sz); tp->rx_ring[i].buffer2 = virt_to_le32desc(&tp->rx_ring[i+1]); tp->rx_skbuff[i] = NULL; } /* Mark the last entry as wrapping the ring. */ - tp->rx_ring[i-1].length = cpu_to_le32(PKT_BUF_SZ | DESC_RING_WRAP); + tp->rx_ring[i-1].length |= cpu_to_le32(DESC_RING_WRAP); tp->rx_ring[i-1].buffer2 = virt_to_le32desc(&tp->rx_ring[0]); for (i = 0; i < RX_RING_SIZE; i++) { /* Note the receive buffer must be longword aligned. dev_alloc_skb() provides 16 byte alignment. But do *not* use skb_reserve() to align the IP header! */ - struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ); + struct sk_buff *skb = dev_alloc_skb(tp->rx_buf_sz); tp->rx_skbuff[i] = skb; if (skb == NULL) break; skb->dev = dev; /* Mark as being used by this device. */ - tp->rx_ring[i].status = cpu_to_le32(DescOwned); /* Owned by Tulip chip */ + tp->rx_ring[i].status = cpu_to_le32(DescOwned); tp->rx_ring[i].buffer1 = virt_to_le32desc(skb->tail); } tp->dirty_rx = (unsigned int)(i - RX_RING_SIZE); @@ -2538,18 +2708,18 @@ static void tulip_init_ring(struct device *dev) } static int -tulip_start_xmit(struct sk_buff *skb, struct device *dev) +tulip_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct tulip_private *tp = (struct tulip_private *)dev->priv; - int entry; + int entry, q_used_cnt; u32 flag; - /* Block a timer-based transmit from overlapping. This could better be - done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */ - if (test_and_set_bit(0, (void*)&dev->tbusy) != 0) { - if (jiffies - dev->trans_start < TX_TIMEOUT) - return 1; - tulip_tx_timeout(dev); + /* Block a timer-based transmit from overlapping. This happens when + packets are presumed lost, and we use this check the Tx status. */ + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + tulip_tx_timeout(dev); return 1; } @@ -2558,15 +2728,16 @@ tulip_start_xmit(struct sk_buff *skb, struct device *dev) /* Calculate the next Tx descriptor entry. */ entry = tp->cur_tx % TX_RING_SIZE; + q_used_cnt = tp->cur_tx - tp->dirty_tx; tp->tx_skbuff[entry] = skb; tp->tx_ring[entry].buffer1 = virt_to_le32desc(skb->data); - if (tp->cur_tx - tp->dirty_tx < TX_RING_SIZE/2) {/* Typical path */ + if (q_used_cnt < TX_QUEUE_LEN/2) {/* Typical path */ flag = 0x60000000; /* No interrupt */ - } else if (tp->cur_tx - tp->dirty_tx == TX_RING_SIZE/2) { + } else if (q_used_cnt == TX_QUEUE_LEN/2) { flag = 0xe0000000; /* Tx-done intr. */ - } else if (tp->cur_tx - tp->dirty_tx < TX_RING_SIZE - 2) { + } else if (q_used_cnt < TX_QUEUE_LEN) { flag = 0x60000000; /* No Tx-done intr. */ } else { /* Leave room for set_rx_mode() to fill entries. */ tp->tx_full = 1; @@ -2579,7 +2750,15 @@ tulip_start_xmit(struct sk_buff *skb, struct device *dev) tp->tx_ring[entry].status = cpu_to_le32(DescOwned); tp->cur_tx++; if ( ! tp->tx_full) - clear_bit(0, (void*)&dev->tbusy); + netif_unpause_tx_queue(dev); + else { + netif_stop_tx_queue(dev); + /* Check for a just-cleared queue race. + Note that this code path differs from other drivers because we + set the tx_full flag early. */ + if ( ! tp->tx_full) + netif_resume_tx_queue(dev); + } dev->trans_start = jiffies; /* Trigger an immediate transmit demand. */ @@ -2592,55 +2771,26 @@ tulip_start_xmit(struct sk_buff *skb, struct device *dev) after the Tx thread. */ static void tulip_interrupt(int irq, void *dev_instance, struct pt_regs *regs) { - struct device *dev = (struct device *)dev_instance; + struct net_device *dev = (struct net_device *)dev_instance; struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; - int csr5; - int entry; - int missed; - int rx = 0; - int tx = 0; - int oi = 0; - int maxrx = RX_RING_SIZE; - int maxtx = TX_RING_SIZE; - int maxoi = TX_RING_SIZE; - -#if defined(__i386__) && defined(SMP_CHECK) - if (test_and_set_bit(0, (void*)&dev->interrupt)) { - printk(KERN_ERR "%s: Duplicate entry of the interrupt handler by " - "processor %d.\n", - dev->name, hard_smp_processor_id()); - dev->interrupt = 0; - return; - } -#else - if (dev->interrupt) { - printk(KERN_ERR "%s: Re-entering the interrupt handler.\n", dev->name); - return; - } - dev->interrupt = 1; -#endif - - tp->nir++; + int csr5, work_budget = tp->max_interrupt_work; do { csr5 = inl(ioaddr + CSR5); - /* Acknowledge all of the current interrupt sources ASAP. */ - outl(csr5 & 0x0001ffff, ioaddr + CSR5); - - if (tulip_debug > 4) - printk(KERN_DEBUG "%s: interrupt csr5=%#8.8x new csr5=%#8.8x.\n", - dev->name, csr5, inl(dev->base_addr + CSR5)); - if ((csr5 & (NormalIntr|AbnormalIntr)) == 0) break; - if (csr5 & (RxIntr | RxNoBuf)) { - rx += tulip_rx(dev); - tulip_refill_rx(dev); - } + if (tp->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: interrupt csr5=%#8.8x new csr5=%#8.8x.\n", + dev->name, csr5, (int)inl(dev->base_addr + CSR5)); + /* Acknowledge all of the current interrupt sources ASAP. */ + outl(csr5 & 0x0001ffff, ioaddr + CSR5); + + if (csr5 & (RxIntr | RxNoBuf)) + work_budget -= tulip_rx(dev); - if (csr5 & (TxNoBuf | TxDied | TxIntr | TimerInt)) { + if (csr5 & (TxNoBuf | TxDied | TxIntr)) { unsigned int dirty_tx; for (dirty_tx = tp->dirty_tx; tp->cur_tx - dirty_tx > 0; @@ -2653,14 +2803,12 @@ static void tulip_interrupt(int irq, void *dev_instance, struct pt_regs *regs) /* Check for Rx filter setup frames. */ if (tp->tx_skbuff[entry] == NULL) continue; - + if (status & 0x8000) { /* There was an major error, log it. */ -#ifndef final_version - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_TX_ERR) printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n", dev->name, status); -#endif tp->stats.tx_errors++; if (status & 0x4104) tp->stats.tx_aborted_errors++; if (status & 0x0C00) tp->stats.tx_carrier_errors++; @@ -2672,6 +2820,9 @@ static void tulip_interrupt(int irq, void *dev_instance, struct pt_regs *regs) if (status & 0x0100) tp->stats.collisions16++; #endif } else { + if (tp->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG "%s: Transmit complete, status " + "%8.8x.\n", dev->name, status); #ifdef ETHER_STATS if (status & 0x0001) tp->stats.tx_deferred++; #endif @@ -2683,9 +2834,8 @@ static void tulip_interrupt(int irq, void *dev_instance, struct pt_regs *regs) } /* Free the original skb. */ - dev_free_skb(tp->tx_skbuff[entry]); + dev_free_skb_irq(tp->tx_skbuff[entry]); tp->tx_skbuff[entry] = 0; - tx++; } #ifndef final_version @@ -2696,22 +2846,22 @@ static void tulip_interrupt(int irq, void *dev_instance, struct pt_regs *regs) } #endif - if (tp->tx_full && dev->tbusy - && tp->cur_tx - dirty_tx < TX_RING_SIZE - 2) { + if (tp->tx_full && tp->cur_tx - dirty_tx < TX_QUEUE_LEN - 4) { /* The ring is no longer full, clear tbusy. */ tp->tx_full = 0; - dev->tbusy = 0; - netif_wake_queue(dev); + netif_resume_tx_queue(dev); } tp->dirty_tx = dirty_tx; - if (csr5 & TxDied) { - if (tulip_debug > 2) - printk(KERN_WARNING "%s: The transmitter stopped." - " CSR5 is %x, CSR6 %x, new CSR6 %x.\n", - dev->name, csr5, inl(ioaddr + CSR6), tp->csr6); - outl(tp->csr6 | 0x0002, ioaddr + CSR6); - outl(tp->csr6 | 0x2002, ioaddr + CSR6); + } + + if (tp->rx_dead) { + tulip_rx(dev); + if (tp->cur_rx - tp->dirty_rx < RX_RING_SIZE - 3) { + printk(KERN_ERR "%s: Restarted Rx at %d / %d.\n", + dev->name, tp->cur_rx, tp->dirty_rx); + outl(0, ioaddr + CSR2); /* Rx poll demand */ + tp->rx_dead = 0; } } @@ -2720,130 +2870,98 @@ static void tulip_interrupt(int irq, void *dev_instance, struct pt_regs *regs) if (csr5 == 0xffffffff) break; if (csr5 & TxJabber) tp->stats.tx_errors++; + if (csr5 & PCIBusError) { + printk(KERN_ERR "%s: PCI Fatal Bus Error, %8.8x.\n", + dev->name, csr5); + } if (csr5 & TxFIFOUnderflow) { if ((tp->csr6 & 0xC000) != 0xC000) tp->csr6 += 0x4000; /* Bump up the Tx threshold */ else tp->csr6 |= 0x00200000; /* Store-n-forward. */ + if (tp->msg_level & NETIF_MSG_TX_ERR) + printk(KERN_WARNING "%s: Tx threshold increased, " + "new CSR6 %x.\n", dev->name, tp->csr6); + } + if (csr5 & TxDied) { + /* This is normal when changing Tx modes. */ + if (tp->msg_level & NETIF_MSG_LINK) + printk(KERN_WARNING "%s: The transmitter stopped." + " CSR5 is %x, CSR6 %x, new CSR6 %x.\n", + dev->name, csr5, (int)inl(ioaddr + CSR6), tp->csr6); + } + if (csr5 & (TxDied | TxFIFOUnderflow | PCIBusError)) { /* Restart the transmit process. */ - outl(tp->csr6 | 0x0002, ioaddr + CSR6); - outl(tp->csr6 | 0x2002, ioaddr + CSR6); - outl(0, ioaddr + CSR1); + outl(tp->csr6 | RxOn, ioaddr + CSR6); + outl(tp->csr6 | RxOn | TxOn, ioaddr + CSR6); } - if (csr5 & RxDied) { /* Missed a Rx frame. */ - tp->stats.rx_errors++; + if (csr5 & (RxStopped | RxNoBuf)) { + /* Missed a Rx frame or mode change. */ tp->stats.rx_missed_errors += inl(ioaddr + CSR8) & 0xffff; - outl(tp->csr6 | 0x2002, ioaddr + CSR6); + if (tp->flags & COMET_MAC_ADDR) { + outl(tp->mc_filter[0], ioaddr + 0xAC); + outl(tp->mc_filter[1], ioaddr + 0xB0); + } + tulip_rx(dev); + if (csr5 & RxNoBuf) + tp->rx_dead = 1; + outl(tp->csr6 | RxOn | TxOn, ioaddr + CSR6); + } + if (csr5 & TimerInt) { + if (tp->msg_level & NETIF_MSG_INTR) + printk(KERN_ERR "%s: Re-enabling interrupts, %8.8x.\n", + dev->name, csr5); + outl(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7); } if (csr5 & (TPLnkPass | TPLnkFail | 0x08000000)) { if (tp->link_change) (tp->link_change)(dev, csr5); } - if (csr5 & SytemError) { - printk(KERN_ERR "%s: (%lu) System Error occured\n", dev->name, tp->nir); - } /* Clear all error sources, included undocumented ones! */ outl(0x0800f7ba, ioaddr + CSR5); - oi++; } - if (csr5 & TimerInt) { -#if 0 - if (tulip_debug > 2) - printk(KERN_ERR "%s: Re-enabling interrupts, %8.8x.\n", - dev->name, csr5); - outl(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7); -#endif - tp->ttimer = 0; - oi++; - } - if (tx > maxtx || rx > maxrx || oi > maxoi) { - if (tulip_debug > 1) + if (--work_budget < 0) { + if (tp->msg_level & NETIF_MSG_DRV) printk(KERN_WARNING "%s: Too much work during an interrupt, " - "csr5=0x%8.8x. (%lu) (%d,%d,%d)\n", dev->name, csr5, tp->nir, tx, rx, oi); + "csr5=0x%8.8x.\n", dev->name, csr5); /* Acknowledge all interrupt sources. */ -#if 0 - /* Clear all interrupting sources, set timer to re-enable. */ - outl(((~csr5) & 0x0001ebef) | NormalIntr | AbnormalIntr | TimerInt, - ioaddr + CSR7); - outl(12, ioaddr + CSR11); - tp->ttimer = 1; -#endif + outl(0x8001ffff, ioaddr + CSR5); + if (tp->flags & HAS_INTR_MITIGATION) { + /* Josip Loncaric at ICASE did extensive experimentation + to develop a good interrupt mitigation setting.*/ + outl(0x8b240000, ioaddr + CSR11); + } else { + /* Mask all interrupting sources, set timer to re-enable. */ + outl(((~csr5) & 0x0001ebef) | AbnormalIntr | TimerInt, + ioaddr + CSR7); + outl(0x0012, ioaddr + CSR11); + } break; } } while (1); - tulip_refill_rx(dev); - - /* check if we card is in suspend mode */ - entry = tp->dirty_rx % RX_RING_SIZE; - if (tp->rx_skbuff[entry] == NULL) { - if (tulip_debug > 1) - printk(KERN_WARNING "%s: in rx suspend mode: (%lu) (tp->cur_rx = %u, ttimer = %d, rx = %d) go/stay in suspend mode\n", dev->name, tp->nir, tp->cur_rx, tp->ttimer, rx); - if (tp->ttimer == 0 || (inl(ioaddr + CSR11) & 0xffff) == 0) { - if (tulip_debug > 1) - printk(KERN_WARNING "%s: in rx suspend mode: (%lu) set timer\n", dev->name, tp->nir); - outl(tulip_tbl[tp->chip_id].valid_intrs | TimerInt, - ioaddr + CSR7); - outl(TimerInt, ioaddr + CSR5); - outl(12, ioaddr + CSR11); - tp->ttimer = 1; - } - } - - if ((missed = inl(ioaddr + CSR8) & 0x1ffff)) { - tp->stats.rx_dropped += missed & 0x10000 ? 0x10000 : missed; - } - - if (tulip_debug > 4) + if (tp->msg_level & NETIF_MSG_INTR) printk(KERN_DEBUG "%s: exiting interrupt, csr5=%#4.4x.\n", - dev->name, inl(ioaddr + CSR5)); + dev->name, (int)inl(ioaddr + CSR5)); -#if defined(__i386__) - clear_bit(0, (void*)&dev->interrupt); -#else - dev->interrupt = 0; -#endif return; } -static int tulip_refill_rx(struct device *dev) -{ - struct tulip_private *tp = (struct tulip_private *)dev->priv; - int entry; - int refilled = 0; - - /* Refill the Rx ring buffers. */ - for (; tp->cur_rx - tp->dirty_rx > 0; tp->dirty_rx++) { - entry = tp->dirty_rx % RX_RING_SIZE; - if (tp->rx_skbuff[entry] == NULL) { - struct sk_buff *skb; - skb = tp->rx_skbuff[entry] = dev_alloc_skb(PKT_BUF_SZ); - if (skb == NULL) - break; - skb->dev = dev; /* Mark as being used by this device. */ - tp->rx_ring[entry].buffer1 = virt_to_le32desc(skb->tail); - refilled++; - } - tp->rx_ring[entry].status = cpu_to_le32(DescOwned); - } - return refilled; -} - -static int tulip_rx(struct device *dev) +static int tulip_rx(struct net_device *dev) { struct tulip_private *tp = (struct tulip_private *)dev->priv; int entry = tp->cur_rx % RX_RING_SIZE; int rx_work_limit = tp->dirty_rx + RX_RING_SIZE - tp->cur_rx; - int received = 0; + int work_done = 0; - if (tulip_debug > 4) + if (tp->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG " In tulip_rx(), entry %d %8.8x.\n", entry, tp->rx_ring[entry].status); /* If we own the next entry, it is a new packet. Send it up. */ while ( ! (tp->rx_ring[entry].status & cpu_to_le32(DescOwned))) { s32 status = le32_to_cpu(tp->rx_ring[entry].status); - if (tulip_debug > 5) + if (tp->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG "%s: In tulip_rx(), entry %d %8.8x.\n", dev->name, entry, status); if (--rx_work_limit < 0) @@ -2852,7 +2970,7 @@ static int tulip_rx(struct device *dev) if ((status & 0x38000300) != 0x0300) { /* Ingore earlier buffers. */ if ((status & 0xffff) != 0x7fff) { - if (tulip_debug > 1) + if (tp->msg_level & NETIF_MSG_RX_ERR) printk(KERN_WARNING "%s: Oversized Ethernet frame " "spanned multiple buffers, status %8.8x!\n", dev->name, status); @@ -2860,7 +2978,7 @@ static int tulip_rx(struct device *dev) } } else if (status & RxDescFatalErr) { /* There was a fatal error. */ - if (tulip_debug > 2) + if (tp->msg_level & NETIF_MSG_RX_ERR) printk(KERN_DEBUG "%s: Receive error, Rx status %8.8x.\n", dev->name, status); tp->stats.rx_errors++; /* end of a packet.*/ @@ -2884,28 +3002,21 @@ static int tulip_rx(struct device *dev) #endif /* Check if the packet is long enough to accept without copying to a minimally-sized skbuff. */ - if (pkt_len < rx_copybreak + if (pkt_len < tp->rx_copybreak && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { skb->dev = dev; skb_reserve(skb, 2); /* 16 byte align the IP header */ -#if ! defined(__alpha__) +#if (LINUX_VERSION_CODE >= 0x20100) eth_copy_and_sum(skb, tp->rx_skbuff[entry]->tail, pkt_len, 0); skb_put(skb, pkt_len); #else memcpy(skb_put(skb, pkt_len), tp->rx_skbuff[entry]->tail, pkt_len); #endif - } else { /* Pass up the skb already on the Rx ring. */ - char *temp = skb_put(skb = tp->rx_skbuff[entry], pkt_len); + work_done++; + } else { /* Pass up the skb already on the Rx ring. */ + skb_put(skb = tp->rx_skbuff[entry], pkt_len); tp->rx_skbuff[entry] = NULL; -#ifndef final_version - if (le32desc_to_virt(tp->rx_ring[entry].buffer1) != temp) - printk(KERN_ERR "%s: Internal fault: The skbuff addresses " - "do not match in tulip_rx: %p vs. %p / %p.\n", - dev->name, - le32desc_to_virt(tp->rx_ring[entry].buffer1), - skb->head, temp); -#endif } skb->protocol = eth_type_trans(skb, dev); netif_rx(skb); @@ -2915,43 +3026,36 @@ static int tulip_rx(struct device *dev) tp->stats.rx_bytes += pkt_len; #endif } - received++; entry = (++tp->cur_rx) % RX_RING_SIZE; } - return received; + /* Refill the Rx ring buffers. */ + for (; tp->cur_rx - tp->dirty_rx > 0; tp->dirty_rx++) { + entry = tp->dirty_rx % RX_RING_SIZE; + if (tp->rx_skbuff[entry] == NULL) { + struct sk_buff *skb; + skb = tp->rx_skbuff[entry] = dev_alloc_skb(tp->rx_buf_sz); + if (skb == NULL) { + if (tp->cur_rx - tp->dirty_rx == RX_RING_SIZE) + printk(KERN_ERR "%s: No kernel memory to allocate " + "receive buffers.\n", dev->name); + break; + } + skb->dev = dev; /* Mark as being used by this device. */ + tp->rx_ring[entry].buffer1 = virt_to_le32desc(skb->tail); + work_done++; + } + tp->rx_ring[entry].status = cpu_to_le32(DescOwned); + } + + return work_done; } -static int tulip_close(struct device *dev) +static void empty_rings(struct net_device *dev) { - long ioaddr = dev->base_addr; struct tulip_private *tp = (struct tulip_private *)dev->priv; int i; - dev->start = 0; - dev->tbusy = 1; - - if (tulip_debug > 1) - printk(KERN_DEBUG "%s: Shutting down ethercard, status was %2.2x.\n", - dev->name, inl(ioaddr + CSR5)); - - /* Disable interrupts by clearing the interrupt mask. */ - outl(0x00000000, ioaddr + CSR7); - /* Stop the Tx and Rx processes. */ - outl(inl(ioaddr + CSR6) & ~0x2002, ioaddr + CSR6); - /* 21040 -- Leave the card in 10baseT state. */ - if (tp->chip_id == DC21040) - outl(0x00000004, ioaddr + CSR13); - - if (inl(ioaddr + CSR6) != 0xffffffff) - tp->stats.rx_missed_errors += inl(ioaddr + CSR8) & 0xffff; - - del_timer(&tp->timer); - - free_irq(dev->irq, dev); - - dev->if_port = tp->saved_if_port; - /* Free all the skbuffs in the Rx queue. */ for (i = 0; i < RX_RING_SIZE; i++) { struct sk_buff *skb = tp->rx_skbuff[i]; @@ -2971,86 +3075,165 @@ static int tulip_close(struct device *dev) dev_free_skb(tp->tx_skbuff[i]); tp->tx_skbuff[i] = 0; } +} + +static int tulip_close(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct tulip_private *tp = (struct tulip_private *)dev->priv; + + netif_stop_tx_queue(dev); + + if (tp->msg_level & NETIF_MSG_IFDOWN) + printk(KERN_DEBUG "%s: Shutting down ethercard, status was %2.2x.\n", + dev->name, (int)inl(ioaddr + CSR5)); + + /* Disable interrupts by clearing the interrupt mask. */ + outl(0x00000000, ioaddr + CSR7); + /* Stop the Tx and Rx processes. */ + outl(inl(ioaddr + CSR6) & ~TxOn & ~RxOn, ioaddr + CSR6); + /* 21040 -- Leave the card in 10baseT state. */ + if (tp->chip_id == DC21040) + outl(0x00000004, ioaddr + CSR13); + + if (inl(ioaddr + CSR6) != 0xffffffff) + tp->stats.rx_missed_errors += inl(ioaddr + CSR8) & 0xffff; + + del_timer(&tp->timer); + free_irq(dev->irq, dev); + + dev->if_port = tp->saved_if_port; + + empty_rings(dev); /* Leave the driver in snooze, not sleep, mode. */ if (tp->flags & HAS_PWRDWN) - pcibios_write_config_dword(tp->pci_bus, tp->pci_devfn, 0x40, - 0x40000000); + pci_write_config_dword(tp->pci_dev, 0x40, 0x40000000); MOD_DEC_USE_COUNT; return 0; } -static struct net_device_stats *tulip_get_stats(struct device *dev) +static struct net_device_stats *tulip_get_stats(struct net_device *dev) { struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; + int csr8 = inl(ioaddr + CSR8); - if (dev->start) - tp->stats.rx_missed_errors += inl(ioaddr + CSR8) & 0xffff; + if (netif_running(dev) && csr8 != 0xffffffff) + tp->stats.rx_missed_errors += (u16)csr8; return &tp->stats; } #ifdef HAVE_PRIVATE_IOCTL -/* Provide ioctl() calls to examine the MII xcvr state. */ -static int private_ioctl(struct device *dev, struct ifreq *rq, int cmd) +/* Provide ioctl() calls to examine the MII xcvr state. + We emulate a MII management registers for chips without MII. + The two numeric constants are because some clueless person + changed value for the symbolic name. + */ +static int private_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; u16 *data = (u16 *)&rq->ifr_data; - int phy = tp->phys[0] & 0x1f; - long flags; + u32 *data32 = (void *)&rq->ifr_data; + unsigned int phy = tp->phys[0]; + unsigned int regnum = data[1]; switch(cmd) { - case SIOCDEVPRIVATE: /* Get the address of the PHY in use. */ + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ if (tp->mii_cnt) data[0] = phy; - else if (tp->flags & HAS_NWAY143) + else if (tp->flags & HAS_NWAY) data[0] = 32; else if (tp->chip_id == COMET) data[0] = 1; else return -ENODEV; - case SIOCDEVPRIVATE+1: /* Read the specified MII register. */ - if (data[0] == 32 && (tp->flags & HAS_NWAY143)) { + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + if (data[0] == 32 && (tp->flags & HAS_NWAY)) { int csr12 = inl(ioaddr + CSR12); int csr14 = inl(ioaddr + CSR14); - switch (data[1]) { - case 0: { - data[3] = (csr14<<5) & 0x1000; - break; } + switch (regnum) { + case 0: + if (((csr14<<5) & 0x1000) || + (dev->if_port == 5 && tp->nwayset)) + data[3] = 0x1000; + else + data[3] = (media_cap[dev->if_port]&MediaIs100 ? 0x2000 : 0) + | (media_cap[dev->if_port]&MediaIsFD ? 0x0100 : 0); + break; case 1: - data[3] = 0x7848 + ((csr12&0x7000) == 0x5000 ? 0x20 : 0) - + (csr12&0x06 ? 0x04 : 0); + data[3] = 0x1848 + ((csr12&0x7000) == 0x5000 ? 0x20 : 0) + + ((csr12&0x06) == 6 ? 0 : 4); + if (tp->chip_id != DC21041) + data[3] |= 0x6048; break; case 4: { - data[3] = ((csr14>>9)&0x07C0) + - ((inl(ioaddr + CSR6)>>3)&0x0040) + ((csr14>>1)&0x20) + 1; + /* Advertised value, bogus 10baseTx-FD value from CSR6. */ + data[3] = ((inl(ioaddr + CSR6)>>3)&0x0040)+((csr14>>1)&0x20)+1; + if (tp->chip_id != DC21041) + data[3] |= ((csr14>>9)&0x03C0); break; } - case 5: data[3] = csr12 >> 16; break; + case 5: data[3] = tp->lpar; break; default: data[3] = 0; break; } } else { - save_flags(flags); - cli(); - data[3] = mdio_read(dev, data[0] & 0x1f, data[1] & 0x1f); - restore_flags(flags); + data[3] = mdio_read(dev, data[0] & 0x1f, regnum); } return 0; - case SIOCDEVPRIVATE+2: /* Write the specified MII register */ + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ if (!capable(CAP_NET_ADMIN)) return -EPERM; - if (data[0] == 32 && (tp->flags & HAS_NWAY143)) { - if (data[1] == 5) - tp->to_advertise = data[2]; + if (regnum & ~0x1f) + return -EINVAL; + if (data[0] == phy) { + u16 value = data[2]; + switch (regnum) { + case 0: /* Check for autonegotiation on or reset. */ + tp->full_duplex_lock = (value & 0x9000) ? 0 : 1; + if (tp->full_duplex_lock) + tp->full_duplex = (value & 0x0100) ? 1 : 0; + break; + case 4: tp->mii_advertise = data[2]; break; + } + } + if (data[0] == 32 && (tp->flags & HAS_NWAY)) { + u16 value = data[2]; + if (regnum == 0) { + if ((value & 0x1200) == 0x1200) + nway_start(dev); + } else if (regnum == 4) + tp->sym_advertise = value; } else { - save_flags(flags); - cli(); - mdio_write(dev, data[0] & 0x1f, data[1] & 0x1f, data[2]); - restore_flags(flags); + mdio_write(dev, data[0] & 0x1f, regnum, data[2]); + } + return 0; + case SIOCGPARAMS: + data32[0] = tp->msg_level; + data32[1] = tp->multicast_filter_limit; + data32[2] = tp->max_interrupt_work; + data32[3] = tp->rx_copybreak; + data32[4] = inl(ioaddr + CSR11); + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + tp->msg_level = data32[0]; + tp->multicast_filter_limit = data32[1]; + tp->max_interrupt_work = data32[2]; + tp->rx_copybreak = data32[3]; + if (tp->flags & HAS_INTR_MITIGATION) { + u32 *d = (u32 *)&rq->ifr_data; + outl(data32[4], ioaddr + CSR11); + printk(KERN_NOTICE "%s: Set interrupt mitigate paramters %8.8x.\n", + dev->name, d[0]); } return 0; default: @@ -3089,19 +3272,19 @@ static inline u32 ether_crc_le(int length, unsigned char *data) static unsigned const ethernet_polynomial = 0x04c11db7U; static inline u32 ether_crc(int length, unsigned char *data) { - int crc = -1; + int crc = -1; - while(--length >= 0) { + while(--length >= 0) { unsigned char current_octet = *data++; int bit; for (bit = 0; bit < 8; bit++, current_octet >>= 1) crc = (crc << 1) ^ ((crc < 0) ^ (current_octet & 1) ? ethernet_polynomial : 0); - } - return crc; + } + return crc; } -static void set_rx_mode(struct device *dev) +static void set_rx_mode(struct net_device *dev) { struct tulip_private *tp = (struct tulip_private *)dev->priv; long ioaddr = dev->base_addr; @@ -3109,37 +3292,56 @@ static void set_rx_mode(struct device *dev) tp->csr6 &= ~0x00D5; if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ - tp->csr6 |= 0x00C0; - csr6 |= 0x00C0; + tp->csr6 |= AcceptAllMulticast | AcceptAllPhys; + csr6 |= AcceptAllMulticast | AcceptAllPhys; /* Unconditionally log net taps. */ printk(KERN_INFO "%s: Promiscuous mode enabled.\n", dev->name); - } else if ((dev->mc_count > 1000) || (dev->flags & IFF_ALLMULTI)) { + } else if ((dev->mc_count > tp->multicast_filter_limit) || + (dev->flags & IFF_ALLMULTI)) { /* Too many to filter well -- accept all multicasts. */ - tp->csr6 |= 0x0080; - csr6 |= 0x0080; + tp->csr6 |= AcceptAllMulticast; + csr6 |= AcceptAllMulticast; } else if (tp->flags & MC_HASH_ONLY) { /* Some work-alikes have only a 64-entry hash filter table. */ /* Should verify correctness on big-endian/__powerpc__ */ struct dev_mc_list *mclist; int i; - u32 mc_filter[2]; /* Multicast hash filter */ - if (dev->mc_count > 64) { /* Arbitrary non-effective limit. */ - tp->csr6 |= 0x0080; - csr6 |= 0x0080; + if (dev->mc_count > tp->multicast_filter_limit) { + tp->csr6 |= AcceptAllMulticast; + csr6 |= AcceptAllMulticast; } else { - mc_filter[1] = mc_filter[0] = 0; + u32 mc_filter[2] = {0, 0}; /* Multicast hash filter */ + int filterbit; for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; - i++, mclist = mclist->next) - set_bit(ether_crc(ETH_ALEN, mclist->dmi_addr)>>26, mc_filter); - if (tp->chip_id == AX88140) { + i++, mclist = mclist->next) { + if (tp->flags & COMET_MAC_ADDR) + filterbit = ether_crc_le(ETH_ALEN, mclist->dmi_addr); + else + filterbit = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26; + filterbit &= 0x3f; + set_bit(filterbit, mc_filter); + if (tp->msg_level & NETIF_MSG_RXFILTER) + printk(KERN_INFO "%s: Added filter for %2.2x:%2.2x:%2.2x:" + "%2.2x:%2.2x:%2.2x %8.8x bit %d.\n", dev->name, + mclist->dmi_addr[0], mclist->dmi_addr[1], + mclist->dmi_addr[2], mclist->dmi_addr[3], + mclist->dmi_addr[4], mclist->dmi_addr[5], + ether_crc(ETH_ALEN, mclist->dmi_addr), filterbit); + } + if (mc_filter[0] == tp->mc_filter[0] && + mc_filter[1] == tp->mc_filter[1]) + ; /* No change. */ + else if (tp->flags & IS_ASIX) { outl(2, ioaddr + CSR13); outl(mc_filter[0], ioaddr + CSR14); outl(3, ioaddr + CSR13); outl(mc_filter[1], ioaddr + CSR14); - } else if (tp->chip_id == COMET) { /* Has a simple hash filter. */ + } else if (tp->flags & COMET_MAC_ADDR) { outl(mc_filter[0], ioaddr + 0xAC); outl(mc_filter[1], ioaddr + 0xB0); } + tp->mc_filter[0] = mc_filter[0]; + tp->mc_filter[1] = mc_filter[1]; } } else { u16 *eaddrs, *setup_frm = tp->setup_frame; @@ -3153,14 +3355,16 @@ static void set_rx_mode(struct device *dev) u16 hash_table[32]; tx_flags = 0x08400000 | 192; /* Use hash filter. */ memset(hash_table, 0, sizeof(hash_table)); - set_bit(255, hash_table); /* Broadcast entry */ + set_bit(255, hash_table); /* Broadcast entry */ /* This should work on big-endian machines as well. */ for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) set_bit(ether_crc_le(ETH_ALEN, mclist->dmi_addr) & 0x1ff, hash_table); - for (i = 0; i < 32; i++) - *setup_frm++ = *setup_frm++ = hash_table[i]; + for (i = 0; i < 32; i++) { + *setup_frm++ = hash_table[i]; + *setup_frm++ = hash_table[i]; + } setup_frm = &tp->setup_frame[13*6]; } else { /* We have <= 14 addresses so we can use the wonderful @@ -3168,9 +3372,9 @@ static void set_rx_mode(struct device *dev) for (i = 0, mclist = dev->mc_list; i < dev->mc_count; i++, mclist = mclist->next) { eaddrs = (u16 *)mclist->dmi_addr; - *setup_frm++ = *setup_frm++ = *eaddrs++; - *setup_frm++ = *setup_frm++ = *eaddrs++; - *setup_frm++ = *setup_frm++ = *eaddrs++; + *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++; + *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++; + *setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++; } /* Fill the unused entries with the broadcast address. */ memset(setup_frm, 0xff, (15-i)*12); @@ -3178,9 +3382,9 @@ static void set_rx_mode(struct device *dev) } /* Fill the final entry with our physical address. */ eaddrs = (u16 *)dev->dev_addr; - *setup_frm++ = *setup_frm++ = eaddrs[0]; - *setup_frm++ = *setup_frm++ = eaddrs[1]; - *setup_frm++ = *setup_frm++ = eaddrs[2]; + *setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0]; + *setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1]; + *setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2]; /* Now add this frame to the Tx list. */ if (tp->cur_tx - tp->dirty_tx > TX_RING_SIZE - 2) { /* Same setup recently queued, we need not add it. */ @@ -3188,14 +3392,14 @@ static void set_rx_mode(struct device *dev) unsigned long flags; unsigned int entry; - save_flags(flags); cli(); + spin_lock_irqsave(&tp->mii_lock, flags); entry = tp->cur_tx++ % TX_RING_SIZE; if (entry != 0) { /* Avoid a chip errata by prefixing a dummy entry. */ tp->tx_skbuff[entry] = 0; tp->tx_ring[entry].length = - (entry == TX_RING_SIZE-1) ? cpu_to_le32(DESC_RING_WRAP) : 0; + (entry == TX_RING_SIZE-1) ? cpu_to_le32(DESC_RING_WRAP):0; tp->tx_ring[entry].buffer1 = 0; tp->tx_ring[entry].status = cpu_to_le32(DescOwned); entry = tp->cur_tx++ % TX_RING_SIZE; @@ -3209,35 +3413,145 @@ static void set_rx_mode(struct device *dev) tp->tx_ring[entry].buffer1 = virt_to_le32desc(tp->setup_frame); tp->tx_ring[entry].status = cpu_to_le32(DescOwned); if (tp->cur_tx - tp->dirty_tx >= TX_RING_SIZE - 2) { - set_bit(0, (void*)&dev->tbusy); + netif_stop_tx_queue(dev); tp->tx_full = 1; } - restore_flags(flags); + spin_unlock_irqrestore(&tp->mii_lock, flags); /* Trigger an immediate transmit demand. */ outl(0, ioaddr + CSR1); } } - outl(csr6 | 0x0000, ioaddr + CSR6); + outl(csr6, ioaddr + CSR6); } + +static int tulip_pwr_event(void *dev_instance, int event) +{ + struct net_device *dev = dev_instance; + struct tulip_private *tp = (struct tulip_private *)dev->priv; + long ioaddr = dev->base_addr; + if (tp->msg_level & NETIF_MSG_LINK) + printk("%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_ATTACH: + MOD_INC_USE_COUNT; + break; + case DRV_SUSPEND: { + int csr6 = inl(ioaddr + CSR6); + /* Disable interrupts, stop the chip, gather stats. */ + if (csr6 != 0xffffffff) { + int csr8 = inl(ioaddr + CSR8); + outl(0x00000000, ioaddr + CSR7); + outl(csr6 & ~TxOn & ~RxOn, ioaddr + CSR6); + tp->stats.rx_missed_errors += (unsigned short)csr8; + } + empty_rings(dev); + /* Put the 21143 into sleep mode. */ + if (tp->flags & HAS_PWRDWN) + pci_write_config_dword(tp->pci_dev, 0x40,0x80000000); + break; + } + case DRV_RESUME: + if (tp->flags & HAS_PWRDWN) + pci_write_config_dword(tp->pci_dev, 0x40, 0x0000); + outl(tp->csr0, ioaddr + CSR0); + tulip_init_ring(dev); + outl(virt_to_bus(tp->rx_ring), ioaddr + CSR3); + outl(virt_to_bus(tp->tx_ring), ioaddr + CSR4); + if (tp->mii_cnt) { + dev->if_port = 11; + if (tp->mtable && tp->mtable->has_mii) + select_media(dev, 1); + tp->csr6 = 0x820E0000; + dev->if_port = 11; + outl(0x0000, ioaddr + CSR13); + outl(0x0000, ioaddr + CSR14); + } else if (! tp->medialock) + nway_start(dev); + else + select_media(dev, 1); + outl(tulip_tbl[tp->chip_id].valid_intrs, ioaddr + CSR7); + outl(tp->csr6 | TxOn | RxOn, ioaddr + CSR6); + outl(0, ioaddr + CSR2); /* Rx poll demand */ + set_rx_mode(dev); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + printk(KERN_ERR "%s: Tulip CardBus interface was detached while " + "still active.\n", dev->name); + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + if (tp->msg_level & NETIF_MSG_DRV) + printk(KERN_DEBUG "%s: Unregistering device.\n", dev->name); + unregister_netdev(dev); +#ifdef USE_IO_OPS + release_region(dev->base_addr, pci_id_tbl[tp->chip_id].io_size); +#else + iounmap((char *)dev->base_addr); +#endif + for (devp = &root_tulip_dev; *devp; devp = next) { + next = &((struct tulip_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (tp->priv_addr) + kfree(tp->priv_addr); + kfree(dev); + MOD_DEC_USE_COUNT; + break; + } + default: + break; + } + + return 0; +} + #ifdef CARDBUS #include <pcmcia/driver_ops.h> static dev_node_t *tulip_attach(dev_locator_t *loc) { - struct device *dev; - u16 dev_id; - u32 io; + struct net_device *dev; + long ioaddr; + struct pci_dev *pdev; u8 bus, devfn, irq; + u32 dev_id; + u32 pciaddr; + int i, chip_id = 4; /* DC21143 */ if (loc->bus != LOC_PCI) return NULL; bus = loc->b.pci.bus; devfn = loc->b.pci.devfn; printk(KERN_INFO "tulip_attach(bus %d, function %d)\n", bus, devfn); - pcibios_read_config_dword(bus, devfn, PCI_BASE_ADDRESS_0, &io); - pcibios_read_config_word(bus, devfn, PCI_DEVICE_ID, &dev_id); - pcibios_read_config_byte(bus, devfn, PCI_INTERRUPT_LINE, &irq); - dev = tulip_probe1(bus, devfn, NULL, io & ~3, irq, DC21142, 0); + pdev = pci_find_slot(bus, devfn); +#ifdef USE_IO_OPS + pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &pciaddr); + ioaddr = pciaddr & PCI_BASE_ADDRESS_IO_MASK; +#else + pci_read_config_dword(pdev, PCI_BASE_ADDRESS_1, &pciaddr); + ioaddr = (long)ioremap(pciaddr & PCI_BASE_ADDRESS_MEM_MASK, + pci_id_tbl[DC21142].io_size); +#endif + pci_read_config_dword(pdev, 0, &dev_id); + pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &irq); + if (ioaddr == 0 || irq == 0) { + printk(KERN_ERR "The Tulip CardBus Ethernet interface at %d/%d was " + "not assigned an %s.\n" + KERN_ERR " It will not be activated.\n", + bus, devfn, ioaddr == 0 ? "address" : "IRQ"); + return NULL; + } + for (i = 0; pci_id_tbl[i].id.pci; i++) { + if (pci_id_tbl[i].id.pci == (dev_id & pci_id_tbl[i].id.pci_mask)) { + chip_id = i; break; + } + } + dev = tulip_probe1(pdev, NULL, ioaddr, irq, chip_id, 0); if (dev) { dev_node_t *node = kmalloc(sizeof(dev_node_t), GFP_KERNEL); strcpy(node->dev_name, dev->name); @@ -3251,54 +3565,49 @@ static dev_node_t *tulip_attach(dev_locator_t *loc) static void tulip_suspend(dev_node_t *node) { - struct device **devp, **next; + struct net_device **devp, **next; printk(KERN_INFO "tulip_suspend(%s)\n", node->dev_name); for (devp = &root_tulip_dev; *devp; devp = next) { next = &((struct tulip_private *)(*devp)->priv)->next_module; - if (strcmp((*devp)->name, node->dev_name) == 0) break; - } - if (*devp) { - long ioaddr = (*devp)->base_addr; - struct tulip_private *tp = (struct tulip_private *)(*devp)->priv; - int csr6 = inl(ioaddr + CSR6); - /* Disable interrupts, stop the chip, gather stats. */ - if (csr6 != 0xffffffff) { - outl(0x00000000, ioaddr + CSR7); - outl(csr6 & ~0x2002, ioaddr + CSR6); - tp->stats.rx_missed_errors += inl(ioaddr + CSR8) & 0xffff; + if (strcmp((*devp)->name, node->dev_name) == 0) { + tulip_pwr_event(*devp, DRV_SUSPEND); + break; } - tulip_close(*devp); - /* Put the 21143 into sleep mode. */ - pcibios_write_config_dword(tp->pci_bus,tp->pci_devfn, 0x40,0x80000000); } } static void tulip_resume(dev_node_t *node) { - struct device **devp, **next; + struct net_device **devp, **next; printk(KERN_INFO "tulip_resume(%s)\n", node->dev_name); for (devp = &root_tulip_dev; *devp; devp = next) { next = &((struct tulip_private *)(*devp)->priv)->next_module; - if (strcmp((*devp)->name, node->dev_name) == 0) break; - } - if (*devp) { - struct tulip_private *tp = (struct tulip_private *)(*devp)->priv; - pcibios_write_config_dword(tp->pci_bus, tp->pci_devfn, 0x40, 0x0000); - tulip_open(*devp); + if (strcmp((*devp)->name, node->dev_name) == 0) { + tulip_pwr_event(*devp, DRV_RESUME); + break; + } } } static void tulip_detach(dev_node_t *node) { - struct device **devp, **next; + struct net_device **devp, **next; printk(KERN_INFO "tulip_detach(%s)\n", node->dev_name); for (devp = &root_tulip_dev; *devp; devp = next) { next = &((struct tulip_private *)(*devp)->priv)->next_module; if (strcmp((*devp)->name, node->dev_name) == 0) break; } if (*devp) { + struct tulip_private *tp = (struct tulip_private *)(*devp)->priv; unregister_netdev(*devp); +#ifdef USE_IO_OPS + release_region((*devp)->base_addr, pci_id_tbl[DC21142].io_size); +#else + iounmap((char *)(*devp)->base_addr); +#endif kfree(*devp); + if (tp->priv_addr) + kfree(tp->priv_addr); *devp = *next; kfree(node); MOD_DEC_USE_COUNT; @@ -3315,42 +3624,60 @@ struct driver_operations tulip_ops = { #ifdef MODULE int init_module(void) { + if (debug >= NETIF_MSG_DRV) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); #ifdef CARDBUS - reverse_probe = 0; /* Not used. */ register_driver(&tulip_ops); return 0; #else - return tulip_probe(NULL); + return pci_drv_register(&tulip_drv_id, NULL); #endif + reverse_probe = 0; /* Not used. */ } void cleanup_module(void) { - struct device *next_dev; + struct net_device *next_dev; #ifdef CARDBUS unregister_driver(&tulip_ops); +#else + pci_drv_unregister(&tulip_drv_id); #endif /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ while (root_tulip_dev) { - struct tulip_private *tp = (struct tulip_private *)root_tulip_dev->priv; - next_dev = tp->next_module; + struct tulip_private *tp = (struct tulip_private*)root_tulip_dev->priv; unregister_netdev(root_tulip_dev); +#ifdef USE_IO_OPS release_region(root_tulip_dev->base_addr, - tulip_tbl[tp->chip_id].io_size); + pci_id_tbl[tp->chip_id].io_size); +#else + iounmap((char *)root_tulip_dev->base_addr); +#endif + next_dev = tp->next_module; + if (tp->priv_addr) + kfree(tp->priv_addr); kfree(root_tulip_dev); root_tulip_dev = next_dev; } } - +#else +int tulip_probe(struct net_device *dev) +{ + if (pci_drv_register(&tulip_drv_id, dev) < 0) + return -ENODEV; + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return 0; + reverse_probe = 0; /* Not used. */ +} #endif /* MODULE */ /* * Local variables: - * SMP-compile-command: "gcc -D__SMP__ -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c tulip.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" - * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c tulip.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" - * cardbus-compile-command: "gcc -DCARDBUS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c tulip.c -o tulip_cb.o -I/usr/src/pcmcia-cs-3.0.9/include/" + * compile-command: "make KERNVER=`uname -r` tulip.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c tulip.c" + * cardbus-compile-command: "gcc -DCARDBUS -DMODULE -Wall -Wstrict-prototypes -O6 -c tulip.c -o tulip_cb.o -I/usr/src/pcmcia/include/" * c-indent-level: 4 * c-basic-offset: 4 * tab-width: 4 diff --git a/linux/src/drivers/net/via-rhine.c b/linux/src/drivers/net/via-rhine.c index 5dc9fe2..4d7fceb 100644 --- a/linux/src/drivers/net/via-rhine.c +++ b/linux/src/drivers/net/via-rhine.c @@ -1,35 +1,54 @@ /* via-rhine.c: A Linux Ethernet device driver for VIA Rhine family chips. */ /* - Written 1998 by Donald Becker. + Written 1998-2003 by Donald Becker. - This software may be used and distributed according to the terms - of the GNU Public License (GPL), incorporated herein by reference. - Drivers derived from this code also fall under the GPL and must retain - this authorship and copyright notice. + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. This driver is designed for the VIA VT86c100A Rhine-II PCI Fast Ethernet controller. It also works with the older 3043 Rhine-I chip. - The author may be reached as becker@cesdis.edu, or - Donald Becker - 312 Severn Ave. #W302 + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 914 Bay Ridge Road, Suite 220 Annapolis MD 21403 - Support and updates available at - http://cesdis.gsfc.nasa.gov/linux/drivers/via-rhine.html + Support information and updates available at + http://www.scyld.com/network/via-rhine.html + The information and support mailing lists are based at + http://www.scyld.com/mailman/listinfo/ */ -static const char *versionA = -"via-rhine.c:v1.00 9/5/98 Written by Donald Becker\n"; -static const char *versionB = -" http://cesdis.gsfc.nasa.gov/linux/drivers/via-rhine.html\n"; +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"via-rhine.c:v1.16 7/22/2003 Written by Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/network/via-rhine.html\n"; + +/* Automatically extracted configuration info: +probe-func: via_rhine_probe +config-in: tristate 'VIA "Rhine" vt86c100, vt3043, and vt3065 series PCI Ethernet support' CONFIG_VIA_RHINE + +c-help-name: VIA Rhine series PCI Ethernet support +c-help-symbol: CONFIG_VIA_RHINE +c-help: This driver is for the VIA Rhine (v3043) and Rhine-II +c-help: (vt3065 AKA vt86c100) network adapter chip series. +c-help: More specific information and updates are available from +c-help: http://www.scyld.com/network/via-rhine.html +*/ + +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ -/* A few user-configurable values. These may be modified when a driver - module is loaded.*/ +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; -static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ static int max_interrupt_work = 20; -static int min_pci_latency = 64; /* Set the copy breakpoint for the copy-only-tiny-frames scheme. Setting to > 1518 effectively disables this feature. */ @@ -39,6 +58,11 @@ static int rx_copybreak = 0; Both 'options[]' and 'full_duplex[]' should exist for driver interoperability. The media type is usually passed in 'options[]'. + The default is autonegotation for speed and duplex. + This should rarely be overridden. + Use option values 0x10/0x20 for 10Mbps, 0x100,0x200 for 100Mbps. + Use option values 0x10 and 0x100 for forcing half duplex fixed speed. + Use option values 0x20 and 0x200 for forcing full duplex operation. */ #define MAX_UNITS 8 /* More are supported, limit only on options */ static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; @@ -50,39 +74,57 @@ static const int multicast_filter_limit = 32; /* Operational parameters that are set at compile time. */ -/* Keep the ring sizes a power of two for compile efficiency. - The compiler will convert <unsigned>'%'<2^N> into a bit mask. - Making the Tx ring too large decreases the effectiveness of channel +/* Making the Tx ring too large decreases the effectiveness of channel bonding and packet priority. There are no ill effects from too-large receive rings. */ -#define TX_RING_SIZE 8 -#define RX_RING_SIZE 16 +#define TX_RING_SIZE 16 +#define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */ +#define RX_RING_SIZE 32 /* Operational parameters that usually are not changed. */ /* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT (2*HZ) +#define TX_TIMEOUT (6*HZ) -#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. This is not a limit, + but a way to keep a consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 + +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif /* Include files, designed to support most kernel versions 2.0.0 and later. */ #include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + #include <linux/version.h> -#ifdef MODULE -#ifdef MODVERSIONS +#if defined(MODVERSIONS) #include <linux/modversions.h> #endif #include <linux/module.h> -#else -#define MOD_INC_USE_COUNT -#define MOD_DEC_USE_COUNT -#endif #include <linux/kernel.h> #include <linux/string.h> #include <linux/timer.h> #include <linux/errno.h> #include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else #include <linux/malloc.h> +#endif #include <linux/interrupt.h> #include <linux/pci.h> #include <linux/netdevice.h> @@ -92,10 +134,24 @@ static const int multicast_filter_limit = 32; #include <asm/bitops.h> #include <asm/io.h> -/* This driver was written to use PCI memory space, however some boards - only work with I/O space accesses. */ -#define VIA_USE_IO -#ifdef VIA_USE_IO +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif + +/* Condensed bus+endian portability operations. */ +#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) +#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) + +/* This driver was written to use PCI memory space, however most versions + of the Rhine only work correctly with I/O space accesses. */ +#if defined(VIA_USE_MEMORY) +#warning Many adapters using the VIA Rhine chip are not configured to work +#warning with PCI memory space accesses. +#else +#define USE_IO_OPS #undef readb #undef readw #undef readl @@ -110,50 +166,29 @@ static const int multicast_filter_limit = 32; #define writel outl #endif -/* Kernel compatibility defines, some common to David Hind's PCMCIA package. - This is only in the support-all-kernels source code. */ - -#define RUN_AT(x) (jiffies + (x)) - -#if (LINUX_VERSION_CODE >= 0x20100) +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) char kernel_version[] = UTS_RELEASE; -#else -#ifndef __alpha__ -#define ioremap vremap -#define iounmap vfree -#endif #endif -#if defined(MODULE) && LINUX_VERSION_CODE > 0x20115 -MODULE_AUTHOR("Donald Becker <becker@cesdis.gsfc.nasa.gov>"); + +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); MODULE_DESCRIPTION("VIA Rhine PCI Fast Ethernet driver"); +MODULE_LICENSE("GPL"); MODULE_PARM(max_interrupt_work, "i"); -MODULE_PARM(min_pci_latency, "i"); MODULE_PARM(debug, "i"); MODULE_PARM(rx_copybreak, "i"); MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); -#endif -#if LINUX_VERSION_CODE < 0x20123 -#define test_and_set_bit(val, addr) set_bit(val, addr) -#endif -#if LINUX_VERSION_CODE <= 0x20139 -#define net_device_stats enet_statistics -#else -#define NETSTATS_VER2 -#endif -#if LINUX_VERSION_CODE < 0x20155 || defined(CARDBUS) -/* Grrrr, the PCI code changed, but did not consider CardBus... */ -#include <linux/bios32.h> -#define PCI_SUPPORT_VER1 -#else -#define PCI_SUPPORT_VER2 -#endif -#if LINUX_VERSION_CODE < 0x20159 -#define dev_free_skb(skb) dev_kfree_skb(skb, FREE_WRITE); -#else -#define dev_free_skb(skb) dev_kfree_skb(skb); -#endif - +MODULE_PARM(multicast_filter_limit, "i"); +MODULE_PARM_DESC(debug, "Driver message level (0-31)"); +MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex"); +MODULE_PARM_DESC(max_interrupt_work, + "Driver maximum events handled per interrupt"); +MODULE_PARM_DESC(full_duplex, "Non-zero to set forced full duplex " + "(deprecated, use options[] instead)."); +MODULE_PARM_DESC(rx_copybreak, + "Breakpoint in bytes for copy-only-tiny-frames"); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast addresses before switching to Rx-all-multicast"); /* Theory of Operation @@ -230,63 +265,72 @@ IV. Notes IVb. References -Preliminary VT86C100A manual from http://www.via.com.tw/ -http://cesdis.gsfc.nasa.gov/linux/misc/100mbps.html -http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html +This driver was originally written using a preliminary VT86C100A manual +from + http://www.via.com.tw/ +The usual background material was used: + http://www.scyld.com/expert/100mbps.html + http://scyld.com/expert/NWay.html + +Additional information is now available, especially for the newer chips. + http://www.via.com.tw/en/Networking/DS6105LOM100.pdf IVc. Errata The VT86C100A manual is not reliable information. -The chip does not handle unaligned transmit or receive buffers, resulting -in significant performance degradation for bounce buffer copies on transmit -and unaligned IP headers on receive. +The 3043 chip does not handle unaligned transmit or receive buffers, +resulting in significant performance degradation for bounce buffer +copies on transmit and unaligned IP headers on receive. The chip does not pad to minimum transmit length. +There is a bug with the transmit descriptor pointer handling when the +chip encounters a transmit error. + */ -/* This table drives the PCI probe routines. It's mostly boilerplate in all - of the drivers, and will likely be provided by some future kernel. - Note the matching code -- the first table entry matchs all 56** cards but - second only the 1234 card. -*/ -enum pci_flags_bit { - PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4, - PCI_ADDR0=0x10<<0, PCI_ADDR1=0x10<<1, PCI_ADDR2=0x10<<2, PCI_ADDR3=0x10<<3, -}; -struct pci_id_info { - const char *name; - u16 vendor_id, device_id, device_id_mask, flags; - int io_size; - struct device *(*probe1)(int pci_bus, int pci_devfn, struct device *dev, - long ioaddr, int irq, int chip_idx, int fnd_cnt); +static void *via_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +static int via_pwr_event(void *dev_instance, int event); +enum chip_capability_flags { + CanHaveMII=1, HasESIPhy=2, HasDavicomPhy=4, HasV1TxStat=8, + ReqTxAlign=0x10, HasWOL=0x20, HasIPChecksum=0x40, HasVLAN=0x80, + }; -static struct device *via_probe1(int pci_bus, int pci_devfn, - struct device *dev, long ioaddr, int irq, - int chp_idx, int fnd_cnt); +#if defined(VIA_USE_MEMORY) +#define RHINE_IOTYPE (PCI_USES_MEM | PCI_USES_MASTER | PCI_ADDR1) +#define RHINE_I_IOSIZE 128 +#define RHINEII_IOSIZE 4096 +#else +#define RHINE_IOTYPE (PCI_USES_IO | PCI_USES_MASTER | PCI_ADDR0) +#define RHINE_I_IOSIZE 128 +#define RHINEII_IOSIZE 256 +#endif static struct pci_id_info pci_tbl[] = { - { "VIA VT86C100A Rhine-II", 0x1106, 0x6100, 0xffff, - PCI_USES_MEM|PCI_USES_IO|PCI_USES_MEM|PCI_USES_MASTER, 128, via_probe1}, - { "VIA VT3043 Rhine", 0x1106, 0x3043, 0xffff, - PCI_USES_IO|PCI_USES_MEM|PCI_USES_MASTER, 128, via_probe1}, + { "VIA VT3043 Rhine", { 0x30431106, 0xffffffff,}, + RHINE_IOTYPE, RHINE_I_IOSIZE, CanHaveMII | ReqTxAlign | HasV1TxStat }, + { "VIA VT86C100A Rhine", { 0x61001106, 0xffffffff,}, + RHINE_IOTYPE, RHINE_I_IOSIZE, CanHaveMII | ReqTxAlign | HasV1TxStat }, + { "VIA VT6102 Rhine-II", { 0x30651106, 0xffffffff,}, + RHINE_IOTYPE, RHINEII_IOSIZE, CanHaveMII | HasWOL }, + { "VIA VT6105LOM Rhine-III (3106)", { 0x31061106, 0xffffffff,}, + RHINE_IOTYPE, RHINEII_IOSIZE, CanHaveMII | HasWOL }, + /* Duplicate entry, with 'M' features enabled. */ + { "VIA VT6105M Rhine-III (3106)", { 0x31061106, 0xffffffff,}, + RHINE_IOTYPE, RHINEII_IOSIZE, CanHaveMII|HasWOL|HasIPChecksum|HasVLAN}, + { "VIA VT6105M Rhine-III (3053 prototype)", { 0x30531106, 0xffffffff,}, + RHINE_IOTYPE, RHINEII_IOSIZE, CanHaveMII | HasWOL }, {0,}, /* 0 terminated list. */ }; - -/* A chip capabilities table, matching the entries in pci_tbl[] above. */ -enum chip_capability_flags {CanHaveMII=1, }; -struct chip_info { - int io_size; - int flags; -} static cap_tbl[] = { - {128, CanHaveMII, }, - {128, CanHaveMII, }, +struct drv_id_info via_rhine_drv_id = { + "via-rhine", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_tbl, + via_probe1, via_pwr_event }; - /* Offsets to the device registers. */ enum register_offsets { @@ -294,9 +338,10 @@ enum register_offsets { IntrStatus=0x0C, IntrEnable=0x0E, MulticastFilter0=0x10, MulticastFilter1=0x14, RxRingPtr=0x18, TxRingPtr=0x1C, - MIIPhyAddr=0x6C, MIIStatus=0x6D, PCIConfig=0x6E, - MIICmd=0x70, MIIRegAddr=0x71, MIIData=0x72, - Config=0x78, RxMissed=0x7C, RxCRCErrs=0x7E, + MIIPhyAddr=0x6C, MIIStatus=0x6D, PCIBusConfig=0x6E, + MIICmd=0x70, MIIRegAddr=0x71, MIIData=0x72, MACRegEEcsr=0x74, + Config=0x78, ConfigA=0x7A, RxMissed=0x7C, RxCRCErrs=0x7E, + StickyHW=0x83, WOLcrClr=0xA4, WOLcgClr=0xA7, PwrcsrClr=0xAC, }; /* Bits in the interrupt status/mask registers. */ @@ -308,21 +353,18 @@ enum intr_status_bits { IntrRxOverflow=0x0400, IntrRxDropped=0x0800, IntrRxNoBuf=0x1000, IntrTxAborted=0x2000, IntrLinkChange=0x4000, IntrRxWakeUp=0x8000, - IntrNormalSummary=0x0003, IntrAbnormalSummary=0x8260, + IntrNormalSummary=0x0003, IntrAbnormalSummary=0xC260, }; - /* The Rx and Tx buffer descriptors. */ struct rx_desc { - u16 rx_status; - u16 rx_length; + s32 rx_status; u32 desc_length; u32 addr; u32 next_desc; }; struct tx_desc { - u16 tx_status; - u16 tx_own; + s32 tx_status; u32 desc_length; u32 addr; u32 next_desc; @@ -330,9 +372,19 @@ struct tx_desc { /* Bits in *_desc.status */ enum rx_status_bits { - RxDescOwn=0x80000000, RxOK=0x8000, RxWholePkt=0x0300, RxErr=0x008F}; + RxOK=0x8000, RxWholePkt=0x0300, RxErr=0x008F}; enum desc_status_bits { - DescOwn=0x8000, DescEndPacket=0x4000, DescIntr=0x1000, + DescOwn=0x80000000, DescEndPacket=0x4000, DescIntr=0x1000, +}; + +/* Bits in rx.desc_length for extended status. */ +enum rx_info_bits { + RxTypeTag=0x00010000, + RxTypeUDP=0x00020000, RxTypeTCP=0x00040000, RxTypeIP=0x00080000, + RxTypeUTChksumOK=0x00100000, RxTypeIPChksumOK=0x00200000, + /* Summarized. */ + RxTypeCsumMask=0x003E0000, + RxTypeUDPSumOK=0x003A0000, RxTypeTCPSumOK=0x003C0000, }; /* Bits in ChipCmd. */ @@ -343,6 +395,9 @@ enum chip_cmd_bits { CmdNoTxPoll=0x0800, CmdReset=0x8000, }; +#define PRIV_ALIGN 15 /* Required alignment mask */ +/* Use __attribute__((aligned (L1_CACHE_BYTES))) to maintain alignment + within the structure. */ struct netdev_private { /* Descriptor rings first for alignment. */ struct rx_desc rx_ring[RX_RING_SIZE]; @@ -353,24 +408,34 @@ struct netdev_private { struct sk_buff* tx_skbuff[TX_RING_SIZE]; unsigned char *tx_buf[TX_RING_SIZE]; /* Tx bounce buffers */ unsigned char *tx_bufs; /* Tx bounce buffer region. */ - struct device *next_module; /* Link for devices of this type. */ + struct net_device *next_module; /* Link for devices of this type. */ + void *priv_addr; /* Unaligned address for kfree */ struct net_device_stats stats; struct timer_list timer; /* Media monitoring timer. */ - unsigned char pci_bus, pci_devfn; + int msg_level; + int max_interrupt_work; + int intr_enable; + int chip_id, drv_flags; + struct pci_dev *pci_dev; + /* Frequently used values: keep some adjacent for cache effect. */ - int chip_id; - long in_interrupt; /* Word-long for SMP locks. */ + struct rx_desc *rx_head_desc; unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ - unsigned int cur_tx, dirty_tx; unsigned int rx_buf_sz; /* Based on MTU+slack. */ + int rx_copybreak; + + unsigned int cur_tx, dirty_tx; u16 chip_cmd; /* Current setting for ChipCmd */ + int multicast_filter_limit; + u32 mc_filter[2]; + int rx_mode; unsigned int tx_full:1; /* The Tx queue is full. */ /* These values are keep track of the transceiver/media in use. */ unsigned int full_duplex:1; /* Full-duplex operation requested. */ unsigned int duplex_lock:1; unsigned int medialock:1; /* Do not sense media. */ - unsigned int default_port:4; /* Last dev->if_port value. */ + unsigned int default_port; /* Last dev->if_port value. */ u8 tx_thresh, rx_thresh; /* MII transceiver section. */ int mii_cnt; /* MII device addresses. */ @@ -378,171 +443,81 @@ struct netdev_private { unsigned char phys[2]; /* MII device addresses. */ }; -static int mdio_read(struct device *dev, int phy_id, int location); -static void mdio_write(struct device *dev, int phy_id, int location, int value); -static int netdev_open(struct device *dev); -static void check_duplex(struct device *dev); +static int mdio_read(struct net_device *dev, int phy_id, int location); +static void mdio_write(struct net_device *dev, int phy_id, int location, int value); +static int netdev_open(struct net_device *dev); +static void check_duplex(struct net_device *dev); static void netdev_timer(unsigned long data); -static void tx_timeout(struct device *dev); -static void init_ring(struct device *dev); -static int start_tx(struct sk_buff *skb, struct device *dev); +static void tx_timeout(struct net_device *dev); +static void init_ring(struct net_device *dev); +static int start_tx(struct sk_buff *skb, struct net_device *dev); static void intr_handler(int irq, void *dev_instance, struct pt_regs *regs); -static int netdev_rx(struct device *dev); -static void netdev_error(struct device *dev, int intr_status); -static void set_rx_mode(struct device *dev); -static struct net_device_stats *get_stats(struct device *dev); -static int mii_ioctl(struct device *dev, struct ifreq *rq, int cmd); -static int netdev_close(struct device *dev); +static int netdev_rx(struct net_device *dev); +static void netdev_error(struct net_device *dev, int intr_status); +static void set_rx_mode(struct net_device *dev); +static struct net_device_stats *get_stats(struct net_device *dev); +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +static int netdev_close(struct net_device *dev); /* A list of our installed devices, for removing the driver module. */ -static struct device *root_net_dev = NULL; - -/* Ideally we would detect all network cards in slot order. That would - be best done a central PCI probe dispatch, which wouldn't work - well when dynamically adding drivers. So instead we detect just the - cards we know about in slot order. */ - -static int pci_etherdev_probe(struct device *dev, struct pci_id_info pci_tbl[]) -{ - int cards_found = 0; - int pci_index = 0; - unsigned char pci_bus, pci_device_fn; - - if ( ! pcibios_present()) - return -ENODEV; - - for (;pci_index < 0xff; pci_index++) { - u16 vendor, device, pci_command, new_command; - int chip_idx, irq; - long pciaddr; - long ioaddr; - - if (pcibios_find_class (PCI_CLASS_NETWORK_ETHERNET << 8, pci_index, - &pci_bus, &pci_device_fn) - != PCIBIOS_SUCCESSFUL) - break; - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_VENDOR_ID, &vendor); - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_DEVICE_ID, &device); - - for (chip_idx = 0; pci_tbl[chip_idx].vendor_id; chip_idx++) - if (vendor == pci_tbl[chip_idx].vendor_id - && (device & pci_tbl[chip_idx].device_id_mask) == - pci_tbl[chip_idx].device_id) - break; - if (pci_tbl[chip_idx].vendor_id == 0) /* Compiled out! */ - continue; - - { -#if defined(PCI_SUPPORT_VER2) - struct pci_dev *pdev = pci_find_slot(pci_bus, pci_device_fn); -#ifdef VIA_USE_IO - pciaddr = pdev->base_address[0]; -#else - pciaddr = pdev->base_address[1]; -#endif - irq = pdev->irq; -#else - u32 pci_memaddr; - u8 pci_irq_line; - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_INTERRUPT_LINE, &pci_irq_line); -#ifdef VIA_USE_IO - pcibios_read_config_dword(pci_bus, pci_device_fn, - PCI_BASE_ADDRESS_0, &pci_memaddr); - pciaddr = pci_memaddr; -#else - pcibios_read_config_dword(pci_bus, pci_device_fn, - PCI_BASE_ADDRESS_1, &pci_memaddr); - pciaddr = pci_memaddr; -#endif - irq = pci_irq_line; -#endif - } - - if (debug > 2) - printk(KERN_INFO "Found %s at PCI address %#lx, IRQ %d.\n", - pci_tbl[chip_idx].name, pciaddr, irq); - - if (pci_tbl[chip_idx].flags & PCI_USES_IO) { - if (check_region(pciaddr, pci_tbl[chip_idx].io_size)) - continue; - ioaddr = pciaddr & ~3; - } else if ((ioaddr = (long)ioremap(pciaddr & ~0xf, - pci_tbl[chip_idx].io_size)) == 0) { - printk(KERN_INFO "Failed to map PCI address %#lx.\n", - pciaddr); - continue; - } - - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, &pci_command); - new_command = pci_command | (pci_tbl[chip_idx].flags & 7); - if (pci_command != new_command) { - printk(KERN_INFO " The PCI BIOS has not enabled the" - " device at %d/%d! Updating PCI command %4.4x->%4.4x.\n", - pci_bus, pci_device_fn, pci_command, new_command); - pcibios_write_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, new_command); - } - - dev = pci_tbl[chip_idx].probe1(pci_bus, pci_device_fn, dev, ioaddr, - irq, chip_idx, cards_found); - - if (dev && (pci_tbl[chip_idx].flags & PCI_COMMAND_MASTER)) { - u8 pci_latency; - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, &pci_latency); - if (pci_latency < min_pci_latency) { - printk(KERN_INFO " PCI latency timer (CFLT) is " - "unreasonably low at %d. Setting to %d clocks.\n", - pci_latency, min_pci_latency); - pcibios_write_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, min_pci_latency); - } - } - dev = 0; - cards_found++; - } - - return cards_found ? 0 : -ENODEV; -} +static struct net_device *root_net_dev = NULL; #ifndef MODULE -int via_rhine_probe(struct device *dev) +int via_rhine_probe(struct net_device *dev) { - return pci_etherdev_probe(dev, pci_tbl); + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return pci_drv_register(&via_rhine_drv_id, dev); } #endif -static struct device *via_probe1(int pci_bus, int pci_devfn, - struct device *dev, long ioaddr, int irq, - int chip_id, int card_idx) +static void *via_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int card_idx) { - static int did_version = 0; /* Already printed version info */ + struct net_device *dev; struct netdev_private *np; + void *priv_mem; int i, option = card_idx < MAX_UNITS ? options[card_idx] : 0; - if (debug > 0 && did_version++ == 0) - printk(KERN_INFO "%s" KERN_INFO "%s", versionA, versionB); - - dev = init_etherdev(dev, 0); + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; printk(KERN_INFO "%s: %s at 0x%lx, ", - dev->name, pci_tbl[chip_id].name, ioaddr); + dev->name, pci_tbl[chip_idx].name, ioaddr); - /* Ideally we would be read the EEPROM but access may be locked. */ - for (i = 0; i <6; i++) + /* We would prefer to directly read the EEPROM but access may be locked. */ + for (i = 0; i < 6; i++) dev->dev_addr[i] = readb(ioaddr + StationAddr + i); + if (memcmp(dev->dev_addr, "\0\0\0\0\0", 6) == 0) { + /* Reload the station address from the EEPROM. */ + writeb(0x20, ioaddr + MACRegEEcsr); + /* Typically 2 cycles to reload. */ + for (i = 0; i < 150; i++) + if (! (readb(ioaddr + MACRegEEcsr) & 0x20)) + break; + for (i = 0; i < 6; i++) + dev->dev_addr[i] = readb(ioaddr + StationAddr + i); + if (memcmp(dev->dev_addr, "\0\0\0\0\0", 6) == 0) { + printk(" (MISSING EEPROM ADDRESS)"); + /* Fill a temp addr with the "locally administered" bit set. */ + memcpy(dev->dev_addr, ">Linux", 6); + } + } + for (i = 0; i < 5; i++) - printk("%2.2x:", dev->dev_addr[i]); + printk("%2.2x:", dev->dev_addr[i]); printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq); -#ifdef VIA_USE_IO - request_region(ioaddr, pci_tbl[chip_id].io_size, dev->name); + /* Make certain the descriptor lists are cache-aligned. */ + priv_mem = kmalloc(sizeof(*np) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; + +#ifdef USE_IO_OPS + request_region(ioaddr, pci_tbl[chip_idx].io_size, dev->name); #endif /* Reset the chip to erase previous misconfiguration. */ @@ -551,24 +526,27 @@ static struct device *via_probe1(int pci_bus, int pci_devfn, dev->base_addr = ioaddr; dev->irq = irq; - /* Make certain the descriptor lists are cache-aligned. */ - np = (void *)(((long)kmalloc(sizeof(*np), GFP_KERNEL) + 31) & ~31); + dev->priv = np = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); memset(np, 0, sizeof(*np)); - dev->priv = np; + np->priv_addr = priv_mem; np->next_module = root_net_dev; root_net_dev = dev; - np->pci_bus = pci_bus; - np->pci_devfn = pci_devfn; - np->chip_id = chip_id; + np->pci_dev = pdev; + np->chip_id = chip_idx; + np->drv_flags = pci_tbl[chip_idx].drv_flags; + np->msg_level = (1 << debug) - 1; + np->rx_copybreak = rx_copybreak; + np->max_interrupt_work = max_interrupt_work; + np->multicast_filter_limit = multicast_filter_limit; if (dev->mem_start) option = dev->mem_start; /* The lower four bits are the media type. */ if (option > 0) { - if (option & 0x200) + if (option & 0x220) np->full_duplex = 1; np->default_port = option & 15; if (np->default_port) @@ -577,8 +555,11 @@ static struct device *via_probe1(int pci_bus, int pci_devfn, if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) np->full_duplex = 1; - if (np->full_duplex) + if (np->full_duplex) { + printk(KERN_INFO "%s: Set to forced full duplex, autonegotiation" + " disabled.\n", dev->name); np->duplex_lock = 1; + } /* The chip-specific entries in the device structure. */ dev->open = &netdev_open; @@ -588,7 +569,7 @@ static struct device *via_probe1(int pci_bus, int pci_devfn, dev->set_multicast_list = &set_rx_mode; dev->do_ioctl = &mii_ioctl; - if (cap_tbl[np->chip_id].flags & CanHaveMII) { + if (np->drv_flags & CanHaveMII) { int phy, phy_idx = 0; np->phys[0] = 1; /* Standard for this chip. */ for (phy = 1; phy < 32 && phy_idx < 4; phy++) { @@ -605,13 +586,30 @@ static struct device *via_probe1(int pci_bus, int pci_devfn, np->mii_cnt = phy_idx; } + /* Allow forcing the media type. */ + if (option > 0) { + if (option & 0x220) + np->full_duplex = 1; + np->default_port = option & 0x3ff; + if (np->default_port & 0x330) { + np->medialock = 1; + printk(KERN_INFO " Forcing %dMbs %s-duplex operation.\n", + (option & 0x300 ? 100 : 10), + (np->full_duplex ? "full" : "half")); + if (np->mii_cnt) + mdio_write(dev, np->phys[0], 0, + ((option & 0x300) ? 0x2000 : 0) | /* 100mbps? */ + (np->full_duplex ? 0x0100 : 0)); /* Full duplex? */ + } + } + return dev; } /* Read and write over the MII Management Data I/O (MDIO) interface. */ -static int mdio_read(struct device *dev, int phy_id, int regnum) +static int mdio_read(struct net_device *dev, int phy_id, int regnum) { long ioaddr = dev->base_addr; int boguscnt = 1024; @@ -629,11 +627,23 @@ static int mdio_read(struct device *dev, int phy_id, int regnum) return readw(ioaddr + MIIData); } -static void mdio_write(struct device *dev, int phy_id, int regnum, int value) +static void mdio_write(struct net_device *dev, int phy_id, int regnum, int value) { + struct netdev_private *np = (struct netdev_private *)dev->priv; long ioaddr = dev->base_addr; int boguscnt = 1024; + if (phy_id == np->phys[0]) { + switch (regnum) { + case 0: /* Is user forcing speed/duplex? */ + if (value & 0x9000) /* Autonegotiation. */ + np->duplex_lock = 0; + else + np->full_duplex = (value & 0x0100) ? 1 : 0; + break; + case 4: np->advertising = value; break; + } + } /* Wait for a previous command to complete. */ while ((readb(ioaddr + MIICmd) & 0x60) && --boguscnt > 0) ; @@ -646,7 +656,7 @@ static void mdio_write(struct device *dev, int phy_id, int regnum, int value) } -static int netdev_open(struct device *dev) +static int netdev_open(struct net_device *dev) { struct netdev_private *np = (struct netdev_private *)dev->priv; long ioaddr = dev->base_addr; @@ -655,15 +665,17 @@ static int netdev_open(struct device *dev) /* Reset the chip. */ writew(CmdReset, ioaddr + ChipCmd); - if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev)) + MOD_INC_USE_COUNT; + + if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; return -EAGAIN; + } - if (debug > 1) + if (np->msg_level & NETIF_MSG_IFUP) printk(KERN_DEBUG "%s: netdev_open() irq %d.\n", dev->name, dev->irq); - MOD_INC_USE_COUNT; - init_ring(dev); writel(virt_to_bus(np->rx_ring), ioaddr + RxRingPtr); @@ -673,7 +685,7 @@ static int netdev_open(struct device *dev) writeb(dev->dev_addr[i], ioaddr + StationAddr + i); /* Initialize other registers. */ - writew(0x0006, ioaddr + PCIConfig); /* Tune configuration??? */ + writew(0x0006, ioaddr + PCIBusConfig); /* Tune configuration??? */ /* Configure the FIFO thresholds. */ writeb(0x20, ioaddr + TxConfig); /* Initial threshold 32 bytes */ np->tx_thresh = 0x20; @@ -682,26 +694,29 @@ static int netdev_open(struct device *dev) if (dev->if_port == 0) dev->if_port = np->default_port; - dev->tbusy = 0; - dev->interrupt = 0; - np->in_interrupt = 0; - set_rx_mode(dev); + netif_start_tx_queue(dev); - dev->start = 1; - + np->intr_enable = IntrRxDone | IntrRxErr | IntrRxEmpty | + IntrRxOverflow| IntrRxDropped| IntrTxDone | IntrTxAbort | + IntrTxUnderrun | IntrPCIErr | IntrStatsMax | IntrLinkChange | + IntrMIIChange; /* Enable interrupts by setting the interrupt mask. */ - writew(IntrRxDone | IntrRxErr | IntrRxEmpty| IntrRxOverflow| IntrRxDropped| - IntrTxDone | IntrTxAbort | IntrTxUnderrun | - IntrPCIErr | IntrStatsMax | IntrLinkChange | IntrMIIChange, - ioaddr + IntrEnable); + writew(np->intr_enable, ioaddr + IntrEnable); np->chip_cmd = CmdStart|CmdTxOn|CmdRxOn|CmdNoTxPoll; + if (np->duplex_lock) + np->chip_cmd |= CmdFDuplex; writew(np->chip_cmd, ioaddr + ChipCmd); check_duplex(dev); + /* The LED outputs of various MII xcvrs should be configured. */ + /* For NS or Mison phys, turn on bit 1 in register 0x17 */ + /* For ESI phys, turn on bit 7 in register 0x17. */ + mdio_write(dev, np->phys[0], 0x17, mdio_read(dev, np->phys[0], 0x17) | + (np->drv_flags & HasESIPhy) ? 0x0080 : 0x0001); - if (debug > 2) + if (np->msg_level & NETIF_MSG_IFUP) printk(KERN_DEBUG "%s: Done netdev_open(), status %4.4x " "MII status: %4.4x.\n", dev->name, readw(ioaddr + ChipCmd), @@ -709,7 +724,7 @@ static int netdev_open(struct device *dev) /* Set the timer to check for link beat. */ init_timer(&np->timer); - np->timer.expires = RUN_AT(1); + np->timer.expires = jiffies + 2; np->timer.data = (unsigned long)dev; np->timer.function = &netdev_timer; /* timer handler */ add_timer(&np->timer); @@ -717,19 +732,20 @@ static int netdev_open(struct device *dev) return 0; } -static void check_duplex(struct device *dev) +static void check_duplex(struct net_device *dev) { struct netdev_private *np = (struct netdev_private *)dev->priv; long ioaddr = dev->base_addr; int mii_reg5 = mdio_read(dev, np->phys[0], 5); + int negotiated = mii_reg5 & np->advertising; int duplex; if (np->duplex_lock || mii_reg5 == 0xffff) return; - duplex = (mii_reg5 & 0x0100) || (mii_reg5 & 0x01C0) == 0x0040; + duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040; if (np->full_duplex != duplex) { np->full_duplex = duplex; - if (debug) + if (np->msg_level & NETIF_MSG_LINK) printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d link" " partner capability of %4.4x.\n", dev->name, duplex ? "full" : "half", np->phys[0], mii_reg5); @@ -743,22 +759,27 @@ static void check_duplex(struct device *dev) static void netdev_timer(unsigned long data) { - struct device *dev = (struct device *)data; + struct net_device *dev = (struct net_device *)data; struct netdev_private *np = (struct netdev_private *)dev->priv; long ioaddr = dev->base_addr; int next_tick = 10*HZ; - if (debug > 3) { + if (np->msg_level & NETIF_MSG_TIMER) { printk(KERN_DEBUG "%s: VIA Rhine monitor tick, status %4.4x.\n", dev->name, readw(ioaddr + IntrStatus)); } + if (netif_queue_paused(dev) + && np->cur_tx - np->dirty_tx > 1 + && jiffies - dev->trans_start > TX_TIMEOUT) + tx_timeout(dev); + check_duplex(dev); - np->timer.expires = RUN_AT(next_tick); + np->timer.expires = jiffies + next_tick; add_timer(&np->timer); } -static void tx_timeout(struct device *dev) +static void tx_timeout(struct net_device *dev) { struct netdev_private *np = (struct netdev_private *)dev->priv; long ioaddr = dev->base_addr; @@ -768,20 +789,23 @@ static void tx_timeout(struct device *dev) dev->name, readw(ioaddr + IntrStatus), mdio_read(dev, np->phys[0], 1)); - /* Perhaps we should reinitialize the hardware here. */ - dev->if_port = 0; - /* Stop and restart the chip's Tx processes . */ + /* Perhaps we should reinitialize the hardware here. */ + dev->if_port = 0; + /* Restart the chip's Tx processes . */ + writel(virt_to_bus(np->tx_ring + (np->dirty_tx % TX_RING_SIZE)), + ioaddr + TxRingPtr); + writew(CmdTxDemand | np->chip_cmd, dev->base_addr + ChipCmd); - /* Trigger an immediate transmit demand. */ + /* Trigger an immediate transmit demand. */ - dev->trans_start = jiffies; - np->stats.tx_errors++; - return; + dev->trans_start = jiffies; + np->stats.tx_errors++; + return; } /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ -static void init_ring(struct device *dev) +static void init_ring(struct net_device *dev) { struct netdev_private *np = (struct netdev_private *)dev->priv; int i; @@ -790,93 +814,105 @@ static void init_ring(struct device *dev) np->cur_rx = np->cur_tx = 0; np->dirty_rx = np->dirty_tx = 0; - np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); + /* Use 1518/+18 if the CRC is transferred. */ + np->rx_buf_sz = dev->mtu + 14; + if (np->rx_buf_sz < PKT_BUF_SZ) + np->rx_buf_sz = PKT_BUF_SZ; np->rx_head_desc = &np->rx_ring[0]; for (i = 0; i < RX_RING_SIZE; i++) { np->rx_ring[i].rx_status = 0; - np->rx_ring[i].rx_length = 0; - np->rx_ring[i].desc_length = np->rx_buf_sz; - np->rx_ring[i].next_desc = virt_to_bus(&np->rx_ring[i+1]); + np->rx_ring[i].desc_length = cpu_to_le32(np->rx_buf_sz); + np->rx_ring[i].next_desc = virt_to_le32desc(&np->rx_ring[i+1]); np->rx_skbuff[i] = 0; } /* Mark the last entry as wrapping the ring. */ - np->rx_ring[i-1].next_desc = virt_to_bus(&np->rx_ring[0]); + np->rx_ring[i-1].next_desc = virt_to_le32desc(&np->rx_ring[0]); - /* Fill in the Rx buffers. */ + /* Fill in the Rx buffers. Handle allocation failure gracefully. */ for (i = 0; i < RX_RING_SIZE; i++) { struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); np->rx_skbuff[i] = skb; if (skb == NULL) break; skb->dev = dev; /* Mark as being used by this device. */ - np->rx_ring[i].addr = virt_to_bus(skb->tail); - np->rx_ring[i].rx_status = 0; - np->rx_ring[i].rx_length = DescOwn; + np->rx_ring[i].addr = virt_to_le32desc(skb->tail); + np->rx_ring[i].rx_status = cpu_to_le32(DescOwn); } np->dirty_rx = (unsigned int)(i - RX_RING_SIZE); for (i = 0; i < TX_RING_SIZE; i++) { np->tx_skbuff[i] = 0; - np->tx_ring[i].tx_own = 0; - np->tx_ring[i].desc_length = 0x00e08000; - np->tx_ring[i].next_desc = virt_to_bus(&np->tx_ring[i+1]); - np->tx_buf[i] = kmalloc(PKT_BUF_SZ, GFP_KERNEL); + np->tx_ring[i].tx_status = 0; + np->tx_ring[i].desc_length = cpu_to_le32(0x00e08000); + np->tx_ring[i].next_desc = virt_to_le32desc(&np->tx_ring[i+1]); + np->tx_buf[i] = 0; /* Allocated as/if needed. */ } - np->tx_ring[i-1].next_desc = virt_to_bus(&np->tx_ring[0]); + np->tx_ring[i-1].next_desc = virt_to_le32desc(&np->tx_ring[0]); return; } -static int start_tx(struct sk_buff *skb, struct device *dev) +static int start_tx(struct sk_buff *skb, struct net_device *dev) { struct netdev_private *np = (struct netdev_private *)dev->priv; unsigned entry; - /* Block a timer-based transmit from overlapping. This could better be - done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */ - if (test_and_set_bit(0, (void*)&dev->tbusy) != 0) { - if (jiffies - dev->trans_start < TX_TIMEOUT) - return 1; - tx_timeout(dev); + /* Block a timer-based transmit from overlapping. This happens when + packets are presumed lost, and we use this check the Tx status. */ + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + tx_timeout(dev); return 1; } - /* Caution: the write order is important here, set the field - with the "ownership" bits last. */ + /* Caution: the write order is important here, set the descriptor word + with the "ownership" bit last. No SMP locking is needed if the + cur_tx is incremented after the descriptor is consistent. */ /* Calculate the next Tx descriptor entry. */ entry = np->cur_tx % TX_RING_SIZE; np->tx_skbuff[entry] = skb; - if ((long)skb->data & 3) { /* Must use alignment buffer. */ + if ((np->drv_flags & ReqTxAlign) && ((long)skb->data & 3)) { + /* Must use alignment buffer. */ if (np->tx_buf[entry] == NULL && (np->tx_buf[entry] = kmalloc(PKT_BUF_SZ, GFP_KERNEL)) == NULL) return 1; memcpy(np->tx_buf[entry], skb->data, skb->len); - np->tx_ring[entry].addr = virt_to_bus(np->tx_buf[entry]); + np->tx_ring[entry].addr = virt_to_le32desc(np->tx_buf[entry]); } else - np->tx_ring[entry].addr = virt_to_bus(skb->data); + np->tx_ring[entry].addr = virt_to_le32desc(skb->data); + /* Explicitly flush packet data cache lines here. */ - np->tx_ring[entry].desc_length = 0x00E08000 | - (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN); - np->tx_ring[entry].tx_own = DescOwn; + np->tx_ring[entry].desc_length = + cpu_to_le32(0x00E08000 | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN)); + np->tx_ring[entry].tx_status = cpu_to_le32(DescOwn); np->cur_tx++; - /* Non-x86 Todo: explicitly flush cache lines here. */ + /* Explicitly flush descriptor cache lines here. */ /* Wake the potentially-idle transmit channel. */ writew(CmdTxDemand | np->chip_cmd, dev->base_addr + ChipCmd); - if (np->cur_tx - np->dirty_tx < TX_RING_SIZE - 1) - clear_bit(0, (void*)&dev->tbusy); /* Typical path */ - else + if (np->cur_tx - np->dirty_tx >= TX_QUEUE_LEN - 1) { np->tx_full = 1; + /* Check for a just-cleared queue. */ + if (np->cur_tx - (volatile unsigned int)np->dirty_tx + < TX_QUEUE_LEN - 2) { + np->tx_full = 0; + netif_unpause_tx_queue(dev); + } else + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); /* Typical path */ + dev->trans_start = jiffies; - if (debug > 4) { + if (np->msg_level & NETIF_MSG_TX_QUEUED) { printk(KERN_DEBUG "%s: Transmit frame #%d queued in slot %d.\n", dev->name, np->cur_tx, entry); } @@ -887,27 +923,10 @@ static int start_tx(struct sk_buff *skb, struct device *dev) after the Tx thread. */ static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) { - struct device *dev = (struct device *)dev_instance; - struct netdev_private *np; - long ioaddr, boguscnt = max_interrupt_work; - - ioaddr = dev->base_addr; - np = (struct netdev_private *)dev->priv; -#if defined(__i386__) - /* A lock to prevent simultaneous entry bug on Intel SMP machines. */ - if (test_and_set_bit(0, (void*)&dev->interrupt)) { - printk(KERN_ERR"%s: SMP simultaneous entry of an interrupt handler.\n", - dev->name); - dev->interrupt = 0; /* Avoid halting machine. */ - return; - } -#else - if (dev->interrupt) { - printk(KERN_ERR "%s: Re-entering the interrupt handler.\n", dev->name); - return; - } - dev->interrupt = 1; -#endif + struct net_device *dev = (struct net_device *)dev_instance; + struct netdev_private *np = (void *)dev->priv; + long ioaddr = dev->base_addr; + int boguscnt = np->max_interrupt_work; do { u32 intr_status = readw(ioaddr + IntrStatus); @@ -915,7 +934,7 @@ static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) /* Acknowledge all of the current interrupt sources ASAP. */ writew(intr_status & 0xffff, ioaddr + IntrStatus); - if (debug > 4) + if (np->msg_level & NETIF_MSG_INTR) printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", dev->name, intr_status); @@ -928,15 +947,14 @@ static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { int entry = np->dirty_tx % TX_RING_SIZE; - int txstatus; - if (np->tx_ring[entry].tx_own) + int txstatus = le32_to_cpu(np->tx_ring[entry].tx_status); + if (txstatus & DescOwn) break; - txstatus = np->tx_ring[entry].tx_status; - if (debug > 6) - printk(KERN_DEBUG " Tx scavenge %d status %4.4x.\n", + if (np->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG " Tx scavenge %d status %4.4x.\n", entry, txstatus); if (txstatus & 0x8000) { - if (debug > 1) + if (np->msg_level & NETIF_MSG_TX_ERR) printk(KERN_DEBUG "%s: Transmit error, Tx status %4.4x.\n", dev->name, txstatus); np->stats.tx_errors++; @@ -953,22 +971,24 @@ static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) #ifdef ETHER_STATS if (txstatus & 0x0001) np->stats.tx_deferred++; #endif - np->stats.collisions += (txstatus >> 3) & 15; + if (np->drv_flags & HasV1TxStat) + np->stats.collisions += (txstatus >> 3) & 15; + else + np->stats.collisions += txstatus & 15; #if defined(NETSTATS_VER2) - np->stats.tx_bytes += np->tx_ring[entry].desc_length & 0x7ff; + np->stats.tx_bytes += np->tx_skbuff[entry]->len; #endif np->stats.tx_packets++; } /* Free the original skb. */ - dev_free_skb(np->tx_skbuff[entry]); + dev_free_skb_irq(np->tx_skbuff[entry]); np->tx_skbuff[entry] = 0; } - if (np->tx_full && dev->tbusy - && np->cur_tx - np->dirty_tx < TX_RING_SIZE - 4) { - /* The ring is no longer full, clear tbusy. */ + /* Note the 4 slot hysteresis in mark the queue non-full. */ + if (np->tx_full && np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) { + /* The ring is no longer full, allow new TX entries. */ np->tx_full = 0; - clear_bit(0, (void*)&dev->tbusy); - mark_bh(NET_BH); + netif_resume_tx_queue(dev); } /* Abnormal error summary/uncommon events handlers. */ @@ -984,38 +1004,33 @@ static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) } } while (1); - if (debug > 3) + if (np->msg_level & NETIF_MSG_INTR) printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", - dev->name, readw(ioaddr + IntrStatus)); + dev->name, (int)readw(ioaddr + IntrStatus)); -#if defined(__i386__) - clear_bit(0, (void*)&dev->interrupt); -#else - dev->interrupt = 0; -#endif return; } /* This routine is logically part of the interrupt handler, but isolated for clarity and better register allocation. */ -static int netdev_rx(struct device *dev) +static int netdev_rx(struct net_device *dev) { struct netdev_private *np = (struct netdev_private *)dev->priv; int entry = np->cur_rx % RX_RING_SIZE; int boguscnt = np->dirty_rx + RX_RING_SIZE - np->cur_rx; - if (debug > 4) { - printk(KERN_DEBUG " In netdev_rx(), entry %d status %4.4x.\n", - entry, np->rx_head_desc->rx_length); + if (np->msg_level & NETIF_MSG_RX_STATUS) { + printk(KERN_DEBUG " In netdev_rx(), entry %d status %8.8x.\n", + entry, np->rx_head_desc->rx_status); } /* If EOP is set on the next entry, it's a new packet. Send it up. */ - while ( ! (np->rx_head_desc->rx_length & DescOwn)) { + while ( ! (np->rx_head_desc->rx_status & cpu_to_le32(DescOwn))) { struct rx_desc *desc = np->rx_head_desc; - int data_size = desc->rx_length; - u16 desc_status = desc->rx_status; + u32 desc_status = le32_to_cpu(desc->rx_status); + int data_size = desc_status >> 16; - if (debug > 4) + if (np->msg_level & NETIF_MSG_RX_STATUS) printk(KERN_DEBUG " netdev_rx() status is %4.4x.\n", desc_status); if (--boguscnt < 0) @@ -1031,7 +1046,7 @@ static int netdev_rx(struct device *dev) np->stats.rx_length_errors++; } else if (desc_status & RxErr) { /* There was a error. */ - if (debug > 2) + if (np->msg_level & NETIF_MSG_RX_ERR) printk(KERN_DEBUG " netdev_rx() Rx error was %8.8x.\n", desc_status); np->stats.rx_errors++; @@ -1043,28 +1058,38 @@ static int netdev_rx(struct device *dev) } else { struct sk_buff *skb; /* Length should omit the CRC */ - u16 pkt_len = data_size - 4; + int pkt_len = data_size - 4; /* Check if the packet is long enough to accept without copying to a minimally-sized skbuff. */ - if (pkt_len < rx_copybreak + if (pkt_len < np->rx_copybreak && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { skb->dev = dev; skb_reserve(skb, 2); /* 16 byte align the IP header */ -#if ! defined(__alpha__) || USE_IP_COPYSUM /* Avoid misaligned on Alpha */ - eth_copy_and_sum(skb, bus_to_virt(desc->addr), - pkt_len, 0); +#if HAS_IP_COPYSUM /* Call copy + cksum if available. */ + eth_copy_and_sum(skb, np->rx_skbuff[entry]->tail, pkt_len, 0); skb_put(skb, pkt_len); #else - memcpy(skb_put(skb,pkt_len), bus_to_virt(desc->addr), pkt_len); + memcpy(skb_put(skb, pkt_len), np->rx_skbuff[entry]->tail, + pkt_len); #endif } else { skb_put(skb = np->rx_skbuff[entry], pkt_len); np->rx_skbuff[entry] = NULL; } skb->protocol = eth_type_trans(skb, dev); + { /* Use hardware checksum info. */ + int rxtype = le32_to_cpu(desc->desc_length); + int csum_bits = rxtype & RxTypeCsumMask; + if (csum_bits == RxTypeUDPSumOK || + csum_bits == RxTypeTCPSumOK) + skb->ip_summed = CHECKSUM_UNNECESSARY; + } netif_rx(skb); dev->last_rx = jiffies; +#if defined(NETSTATS_VER2) + np->stats.rx_bytes += pkt_len; +#endif np->stats.rx_packets++; } entry = (++np->cur_rx) % RX_RING_SIZE; @@ -1081,10 +1106,9 @@ static int netdev_rx(struct device *dev) if (skb == NULL) break; /* Better luck next round. */ skb->dev = dev; /* Mark as being used by this device. */ - np->rx_ring[entry].addr = virt_to_bus(skb->tail); + np->rx_ring[entry].addr = virt_to_le32desc(skb->tail); } - np->rx_ring[entry].rx_status = 0; - np->rx_ring[entry].rx_length = DescOwn; + np->rx_ring[entry].rx_status = cpu_to_le32(DescOwn); } /* Pre-emptively restart Rx engine. */ @@ -1092,18 +1116,22 @@ static int netdev_rx(struct device *dev) return 0; } -static void netdev_error(struct device *dev, int intr_status) +static void netdev_error(struct net_device *dev, int intr_status) { struct netdev_private *np = (struct netdev_private *)dev->priv; long ioaddr = dev->base_addr; if (intr_status & (IntrMIIChange | IntrLinkChange)) { - if (readb(ioaddr + MIIStatus) & 0x02) + if (readb(ioaddr + MIIStatus) & 0x02) { /* Link failed, restart autonegotiation. */ - mdio_write(dev, np->phys[0], 0, 0x3300); - else + if (np->drv_flags & HasDavicomPhy) + mdio_write(dev, np->phys[0], 0, 0x3300); + netif_link_down(dev); + } else { + netif_link_up(dev); check_duplex(dev); - if (debug) + } + if (np->msg_level & NETIF_MSG_LINK) printk(KERN_ERR "%s: MII status changed: Autonegotiation " "advertising %4.4x partner %4.4x.\n", dev->name, mdio_read(dev, np->phys[0], 4), @@ -1112,20 +1140,24 @@ static void netdev_error(struct device *dev, int intr_status) if (intr_status & IntrStatsMax) { np->stats.rx_crc_errors += readw(ioaddr + RxCRCErrs); np->stats.rx_missed_errors += readw(ioaddr + RxMissed); - writel(0, RxMissed); + writel(0, ioaddr + RxMissed); } if (intr_status & IntrTxAbort) { /* Stats counted in Tx-done handler, just restart Tx. */ + writel(virt_to_bus(&np->tx_ring[np->dirty_tx % TX_RING_SIZE]), + ioaddr + TxRingPtr); writew(CmdTxDemand | np->chip_cmd, dev->base_addr + ChipCmd); } if (intr_status & IntrTxUnderrun) { if (np->tx_thresh < 0xE0) writeb(np->tx_thresh += 0x20, ioaddr + TxConfig); - if (debug > 1) + if (np->msg_level & NETIF_MSG_TX_ERR) printk(KERN_INFO "%s: Transmitter underrun, increasing Tx " "threshold setting to %2.2x.\n", dev->name, np->tx_thresh); } - if ((intr_status & ~(IntrLinkChange|IntrStatsMax|IntrTxAbort)) && debug) { + if ((intr_status & ~(IntrLinkChange | IntrMIIChange | IntrStatsMax | + IntrTxAbort|IntrTxAborted | IntrNormalSummary)) + && (np->msg_level & NETIF_MSG_DRV)) { printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n", dev->name, intr_status); /* Recovery for other fault sources not known. */ @@ -1133,7 +1165,7 @@ static void netdev_error(struct device *dev, int intr_status) } } -static struct enet_statistics *get_stats(struct device *dev) +static struct net_device_stats *get_stats(struct net_device *dev) { struct netdev_private *np = (struct netdev_private *)dev->priv; long ioaddr = dev->base_addr; @@ -1143,7 +1175,7 @@ static struct enet_statistics *get_stats(struct device *dev) non-critical. */ np->stats.rx_crc_errors += readw(ioaddr + RxCRCErrs); np->stats.rx_missed_errors += readw(ioaddr + RxMissed); - writel(0, RxMissed); + writel(0, ioaddr + RxMissed); return &np->stats; } @@ -1154,20 +1186,20 @@ static struct enet_statistics *get_stats(struct device *dev) static unsigned const ethernet_polynomial = 0x04c11db7U; static inline u32 ether_crc(int length, unsigned char *data) { - int crc = -1; + int crc = -1; - while(--length >= 0) { + while(--length >= 0) { unsigned char current_octet = *data++; int bit; for (bit = 0; bit < 8; bit++, current_octet >>= 1) { crc = (crc << 1) ^ ((crc < 0) ^ (current_octet & 1) ? ethernet_polynomial : 0); } - } - return crc; + } + return crc; } -static void set_rx_mode(struct device *dev) +static void set_rx_mode(struct net_device *dev) { struct netdev_private *np = (struct netdev_private *)dev->priv; long ioaddr = dev->base_addr; @@ -1178,9 +1210,11 @@ static void set_rx_mode(struct device *dev) /* Unconditionally log net taps. */ printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); rx_mode = 0x1C; - } else if ((dev->mc_count > multicast_filter_limit) + } else if ((dev->mc_count > np->multicast_filter_limit) || (dev->flags & IFF_ALLMULTI)) { /* Too many to match, or accept all multicasts. */ + writel(0xffffffff, ioaddr + MulticastFilter0); + writel(0xffffffff, ioaddr + MulticastFilter1); rx_mode = 0x0C; } else { struct dev_mc_list *mclist; @@ -1198,44 +1232,67 @@ static void set_rx_mode(struct device *dev) writeb(np->rx_thresh | rx_mode, ioaddr + RxConfig); } -static int mii_ioctl(struct device *dev, struct ifreq *rq, int cmd) +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { + struct netdev_private *np = (struct netdev_private *)dev->priv; u16 *data = (u16 *)&rq->ifr_data; + u32 *data32 = (void *)&rq->ifr_data; switch(cmd) { - case SIOCDEVPRIVATE: /* Get the address of the PHY in use. */ - data[0] = ((struct netdev_private *)dev->priv)->phys[0] & 0x1f; + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ + data[0] = np->phys[0] & 0x1f; /* Fall Through */ - case SIOCDEVPRIVATE+1: /* Read the specified MII register. */ + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ data[3] = mdio_read(dev, data[0] & 0x1f, data[1] & 0x1f); return 0; - case SIOCDEVPRIVATE+2: /* Write the specified MII register */ - if (!suser()) + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ + if (!capable(CAP_NET_ADMIN)) return -EPERM; + /* Note: forced media tracking is done in mdio_write(). */ mdio_write(dev, data[0] & 0x1f, data[1] & 0x1f, data[2]); return 0; + case SIOCGPARAMS: + data32[0] = np->msg_level; + data32[1] = np->multicast_filter_limit; + data32[2] = np->max_interrupt_work; + data32[3] = np->rx_copybreak; + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + np->msg_level = data32[0]; + np->multicast_filter_limit = data32[1]; + np->max_interrupt_work = data32[2]; + np->rx_copybreak = data32[3]; + return 0; default: return -EOPNOTSUPP; } } -static int netdev_close(struct device *dev) +static int netdev_close(struct net_device *dev) { long ioaddr = dev->base_addr; struct netdev_private *np = (struct netdev_private *)dev->priv; int i; - dev->start = 0; - dev->tbusy = 1; + netif_stop_tx_queue(dev); - if (debug > 1) + if (np->msg_level & NETIF_MSG_IFDOWN) printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x.\n", dev->name, readw(ioaddr + ChipCmd)); + /* Switch to loopback mode to avoid hardware races. */ + writeb(np->tx_thresh | 0x01, ioaddr + TxConfig); + /* Disable interrupts by clearing the interrupt mask. */ writew(0x0000, ioaddr + IntrEnable); /* Stop the chip's Tx and Rx processes. */ + np->chip_cmd = CmdStop; writew(CmdStop, ioaddr + ChipCmd); del_timer(&np->timer); @@ -1244,7 +1301,7 @@ static int netdev_close(struct device *dev) /* Free all the skbuffs in the Rx queue. */ for (i = 0; i < RX_RING_SIZE; i++) { - np->rx_ring[i].rx_length = 0; + np->rx_ring[i].rx_status = 0; np->rx_ring[i].addr = 0xBADF00D0; /* An invalid address. */ if (np->rx_skbuff[i]) { #if LINUX_VERSION_CODE < 0x20100 @@ -1258,6 +1315,10 @@ static int netdev_close(struct device *dev) if (np->tx_skbuff[i]) dev_free_skb(np->tx_skbuff[i]); np->tx_skbuff[i] = 0; + if (np->tx_buf[i]) { + kfree(np->tx_buf[i]); + np->tx_buf[i] = 0; + } } MOD_DEC_USE_COUNT; @@ -1265,42 +1326,90 @@ static int netdev_close(struct device *dev) return 0; } +static int via_pwr_event(void *dev_instance, int event) +{ + struct net_device *dev = dev_instance; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_ATTACH: + MOD_INC_USE_COUNT; + break; + case DRV_SUSPEND: + /* Disable interrupts, stop Tx and Rx. */ + writew(0x0000, ioaddr + IntrEnable); + /* Stop the chip's Tx and Rx processes. */ + writew(CmdStop, ioaddr + ChipCmd); + break; + case DRV_RESUME: + /* This is incomplete: the actions are very chip specific. */ + set_rx_mode(dev); + netif_start_tx_queue(dev); + writew(np->chip_cmd, ioaddr + ChipCmd); + writew(np->intr_enable, ioaddr + IntrEnable); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + /* Some, but not all, kernel versions close automatically. */ + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + unregister_netdev(dev); + release_region(dev->base_addr, pci_tbl[np->chip_id].io_size); +#ifndef USE_IO_OPS + iounmap((char *)dev->base_addr); +#endif + for (devp = &root_net_dev; *devp; devp = next) { + next = &((struct netdev_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (np->priv_addr) + kfree(np->priv_addr); + kfree(dev); + MOD_DEC_USE_COUNT; + break; + } + } + + return 0; +} + #ifdef MODULE int init_module(void) { - if (debug) /* Emit version even if no cards detected. */ - printk(KERN_INFO "%s" KERN_INFO "%s", versionA, versionB); -#ifdef CARDBUS - register_driver(ðerdev_ops); - return 0; -#else - return pci_etherdev_probe(NULL, pci_tbl); -#endif + if (debug >= NETIF_MSG_DRV) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return pci_drv_register(&via_rhine_drv_id, NULL); } void cleanup_module(void) { + struct net_device *next_dev; -#ifdef CARDBUS - unregister_driver(ðerdev_ops); -#endif + pci_drv_unregister(&via_rhine_drv_id); /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ while (root_net_dev) { - struct netdev_private *np = - (struct netdev_private *)(root_net_dev->priv); + struct netdev_private *np = (void *)(root_net_dev->priv); unregister_netdev(root_net_dev); -#ifdef VIA_USE_IO +#ifdef USE_IO_OPS release_region(root_net_dev->base_addr, pci_tbl[np->chip_id].io_size); #else iounmap((char *)(root_net_dev->base_addr)); #endif + next_dev = np->next_module; + if (np->priv_addr) + kfree(np->priv_addr); kfree(root_net_dev); - root_net_dev = np->next_module; -#if 0 - kfree(np); /* Assumption: no struct realignment. */ -#endif + root_net_dev = next_dev; } } @@ -1308,8 +1417,9 @@ void cleanup_module(void) /* * Local variables: - * compile-command: "gcc -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c via-rhine.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" - * SMP-compile-command: "gcc -D__SMP__ -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c via-rhine.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" + * compile-command: "make KERNVER=`uname -r` via-rhine.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c via-rhine.c" + * simple-compile-command: "gcc -DMODULE -O6 -c via-rhine.c" * c-indent-level: 4 * c-basic-offset: 4 * tab-width: 4 diff --git a/linux/src/drivers/net/winbond-840.c b/linux/src/drivers/net/winbond-840.c new file mode 100644 index 0000000..556d8ad --- /dev/null +++ b/linux/src/drivers/net/winbond-840.c @@ -0,0 +1,1558 @@ +/* winbond-840.c: A Linux network device driver for the Winbond W89c840. */ +/* + Written 1998-2003 by Donald Becker. + + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. + + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 914 Bay Ridge Road, Suite 220 + Annapolis MD 21403 + + Support information and updates available at + http://www.scyld.com/network/drivers.html + The information and support mailing lists are based at + http://www.scyld.com/mailman/listinfo/ + + Do not remove the copyright infomation. + Do not change the version information unless an improvement has been made. + Merely removing my name, as Compex has done in the past, does not count + as an improvement. +*/ + +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"winbond-840.c:v1.10 7/22/2003 Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/network/drivers.html\n"; + +/* Automatically extracted configuration info: +probe-func: winbond840_probe +config-in: tristate 'Winbond W89c840 Ethernet support' CONFIG_WINBOND_840 + +c-help-name: Winbond W89c840 PCI Ethernet support +c-help-symbol: CONFIG_WINBOND_840 +c-help: The winbond-840.c driver is for the Winbond W89c840 chip. +c-help: This chip is named TX9882 on the Compex RL100-ATX board. +c-help: More specific information and updates are available from +c-help: http://www.scyld.com/network/drivers.html +*/ + +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ + +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; + +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ +static int max_interrupt_work = 20; + +/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). + The '840 uses a 64 element hash table based on the Ethernet CRC. */ +static int multicast_filter_limit = 32; + +/* Set the copy breakpoint for the copy-only-tiny-frames scheme. + Setting to > 1518 effectively disables this feature. */ +static int rx_copybreak = 0; + +/* Used to pass the media type, etc. + Both 'options[]' and 'full_duplex[]' should exist for driver + interoperability, however setting full_duplex[] is deprecated. + The media type is usually passed in 'options[]'. + The default is autonegotation for speed and duplex. + This should rarely be overridden. + Use option values 0x10/0x20 for 10Mbps, 0x100,0x200 for 100Mbps. + Use option values 0x10 and 0x100 for forcing half duplex fixed speed. + Use option values 0x20 and 0x200 for forcing full duplex operation. +*/ +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; + +/* Operational parameters that are set at compile time. */ + +/* Keep the ring sizes a power of two for compile efficiency. + The compiler will convert <unsigned>'%'<2^N> into a bit mask. + Making the Tx ring too large decreases the effectiveness of channel + bonding and packet priority, confuses the system network buffer limits, + and wastes memory. + Larger receive rings merely waste memory. +*/ +#define TX_RING_SIZE 16 +#define TX_QUEUE_LEN 10 /* Limit ring entries actually used, min 4. */ +#define RX_RING_SIZE 32 + +/* The presumed FIFO size for working around the Tx-FIFO-overflow bug. + To avoid overflowing we don't queue again until we have room for a + full-size packet. + */ +#define TX_FIFO_SIZE (2048) +#define TX_BUG_FIFO_LIMIT (TX_FIFO_SIZE-1514-16) + +/* Operational parameters that usually are not changed. */ +/* Time in jiffies before concluding the transmitter is hung. + Re-autonegotiation may take up to 3 seconds. + */ +#define TX_TIMEOUT (6*HZ) + +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. This is not a limit, + but a way to keep a consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 + +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif + +/* Include files, designed to support most kernel versions 2.0.0 and later. */ +#include <linux/config.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ +#endif +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + +#include <linux/version.h> +#if defined(MODVERSIONS) +#include <linux/modversions.h> +#endif +#include <linux/module.h> + +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else +#include <linux/malloc.h> +#endif +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <asm/processor.h> /* Processor type for cache alignment. */ +#include <asm/bitops.h> +#include <asm/io.h> + +#ifdef INLINE_PCISCAN +#include "k_compat.h" +#else +#include "pci-scan.h" +#include "kern_compat.h" +#endif + +/* Configure the PCI bus bursts and FIFO thresholds. + 486: Set 8 longword cache alignment, 8 longword burst. + 586: Set 16 longword cache alignment, no burst limit. + Cache alignment bits 15:14 Burst length 13:8 + 0000 <not allowed> 0000 align to cache 0800 8 longwords + 4000 8 longwords 0100 1 longword 1000 16 longwords + 8000 16 longwords 0200 2 longwords 2000 32 longwords + C000 32 longwords 0400 4 longwords + Wait the specified 50 PCI cycles after a reset by initializing + Tx and Rx queues and the address filter list. */ +#define TX_DESC_SIZE 16 +#if defined(__powerpc__) || defined(__sparc__) /* Big endian */ +static int csr0 = 0x00100000 | 0xE000 | TX_DESC_SIZE; +#elif defined(__alpha__) || defined(__x86_64) || defined(__ia64) +static int csr0 = 0xE000 | TX_DESC_SIZE; +#elif defined(__i386__) +static int csr0 = 0xE000 | TX_DESC_SIZE; +#else +static int csr0 = 0xE000 | TX_DESC_SIZE; +#warning Processor architecture unknown! +#endif + + + +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; +#endif + +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); +MODULE_DESCRIPTION("Winbond W89c840 Ethernet driver"); +MODULE_LICENSE("GPL"); +MODULE_PARM(max_interrupt_work, "i"); +MODULE_PARM(debug, "i"); +MODULE_PARM(rx_copybreak, "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(multicast_filter_limit, "i"); +MODULE_PARM_DESC(debug, "Driver message level (0-31)"); +MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex"); +MODULE_PARM_DESC(max_interrupt_work, + "Driver maximum events handled per interrupt"); +MODULE_PARM_DESC(full_duplex, "Non-zero to set forced full duplex."); +MODULE_PARM_DESC(rx_copybreak, + "Breakpoint in bytes for copy-only-tiny-frames"); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast addresses before switching to Rx-all-multicast"); + +/* + Theory of Operation + +I. Board Compatibility + +This driver is for the Winbond w89c840 chip. + +II. Board-specific settings + +None. + +III. Driver operation + +This chip is very similar to the Digital 21*4* "Tulip" family. The first +twelve registers and the descriptor format are nearly identical. Read a +Tulip manual for operational details. + +A significant difference is that the multicast filter and station address are +stored in registers rather than loaded through a pseudo-transmit packet. + +Unlike the Tulip, transmit buffers are limited to 1KB. To transmit a +full-sized packet we must use both data buffers in a descriptor. Thus the +driver uses ring mode where descriptors are implicitly sequential in memory, +rather than using the second descriptor address as a chain pointer to +subsequent descriptors. + +IV. Notes + +If you are going to almost clone a Tulip, why not go all the way and avoid +the need for a new driver? + +IVb. References + +http://www.scyld.com/expert/100mbps.html +http://www.scyld.com/expert/NWay.html +http://www.winbond.com.tw/ + +IVc. Errata + +A horrible bug exists in the transmit FIFO. Apparently the chip doesn't +correctly detect a full FIFO, and queuing more than 2048 bytes may result in +silent data corruption. + +*/ + + + +/* + PCI probe table. +*/ +static void *w840_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt); +static int winbond_pwr_event(void *dev_instance, int event); +enum chip_capability_flags { + CanHaveMII=1, HasBrokenTx=2, AlwaysFDX=4, FDXOnNoMII=8,}; +#ifdef USE_IO_OPS +#define W840_FLAGS (PCI_USES_IO | PCI_ADDR0 | PCI_USES_MASTER) +#else +#define W840_FLAGS (PCI_USES_MEM | PCI_ADDR1 | PCI_USES_MASTER) +#endif + +static struct pci_id_info pci_id_tbl[] = { + {"Winbond W89c840", /* Sometime a Level-One switch card. */ + { 0x08401050, 0xffffffff, 0x81530000, 0xffff0000 }, + W840_FLAGS, 128, CanHaveMII | HasBrokenTx | FDXOnNoMII}, + {"Winbond W89c840", { 0x08401050, 0xffffffff, }, + W840_FLAGS, 128, CanHaveMII | HasBrokenTx}, + {"Compex RL100-ATX", { 0x201111F6, 0xffffffff,}, + W840_FLAGS, 128, CanHaveMII | HasBrokenTx}, + {0,}, /* 0 terminated list. */ +}; + +struct drv_id_info winbond840_drv_id = { + "winbond-840", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, + w840_probe1, winbond_pwr_event }; + +/* This driver was written to use PCI memory space, however some x86 systems + work only with I/O space accesses. Pass -DUSE_IO_OPS to use PCI I/O space + accesses instead of memory space. */ + +#ifdef USE_IO_OPS +#undef readb +#undef readw +#undef readl +#undef writeb +#undef writew +#undef writel +#define readb inb +#define readw inw +#define readl inl +#define writeb outb +#define writew outw +#define writel outl +#endif + +/* Offsets to the Command and Status Registers, "CSRs". + While similar to the Tulip, these registers are longword aligned. + Note: It's not useful to define symbolic names for every register bit in + the device. The name can only partially document the semantics and make + the driver longer and more difficult to read. +*/ +enum w840_offsets { + PCIBusCfg=0x00, TxStartDemand=0x04, RxStartDemand=0x08, + RxRingPtr=0x0C, TxRingPtr=0x10, + IntrStatus=0x14, NetworkConfig=0x18, IntrEnable=0x1C, + RxMissed=0x20, EECtrl=0x24, MIICtrl=0x24, BootRom=0x28, GPTimer=0x2C, + CurRxDescAddr=0x30, CurRxBufAddr=0x34, /* Debug use */ + MulticastFilter0=0x38, MulticastFilter1=0x3C, StationAddr=0x40, + CurTxDescAddr=0x4C, CurTxBufAddr=0x50, +}; + +/* Bits in the interrupt status/enable registers. */ +/* The bits in the Intr Status/Enable registers, mostly interrupt sources. */ +enum intr_status_bits { + NormalIntr=0x10000, AbnormalIntr=0x8000, + IntrPCIErr=0x2000, TimerInt=0x800, + IntrRxDied=0x100, RxNoBuf=0x80, IntrRxDone=0x40, + TxFIFOUnderflow=0x20, RxErrIntr=0x10, + TxIdle=0x04, IntrTxStopped=0x02, IntrTxDone=0x01, +}; + +/* Bits in the NetworkConfig register. */ +enum rx_mode_bits { + TxOn=0x2000, RxOn=0x0002, FullDuplex=0x0200, + AcceptErr=0x80, AcceptRunt=0x40, /* Not used */ + AcceptBroadcast=0x20, AcceptMulticast=0x10, AcceptAllPhys=0x08, +}; + +enum mii_reg_bits { + MDIO_ShiftClk=0x10000, MDIO_DataIn=0x80000, MDIO_DataOut=0x20000, + MDIO_EnbOutput=0x40000, MDIO_EnbIn = 0x00000, +}; + +/* The Tulip-like Rx and Tx buffer descriptors. */ +struct w840_rx_desc { + s32 status; + s32 length; + u32 buffer1; + u32 next_desc; +}; + +struct w840_tx_desc { + s32 status; + s32 length; + u32 buffer1, buffer2; /* We use only buffer 1. */ + char pad[TX_DESC_SIZE - 16]; +}; + +/* Bits in network_desc.status */ +enum desc_status_bits { + DescOwn=0x80000000, DescEndRing=0x02000000, DescUseLink=0x01000000, + DescWholePkt=0x60000000, DescStartPkt=0x20000000, DescEndPkt=0x40000000, + DescIntr=0x80000000, +}; + +#define PRIV_ALIGN 15 /* Required alignment mask */ +struct netdev_private { + /* Descriptor rings first for alignment. */ + struct w840_rx_desc rx_ring[RX_RING_SIZE]; + struct w840_tx_desc tx_ring[TX_RING_SIZE]; + struct net_device *next_module; /* Link for devices of this type. */ + void *priv_addr; /* Unaligned address for kfree */ + const char *product_name; + /* The addresses of receive-in-place skbuffs. */ + struct sk_buff* rx_skbuff[RX_RING_SIZE]; + /* The saved address of a sent-in-place packet/buffer, for later free(). */ + struct sk_buff* tx_skbuff[TX_RING_SIZE]; + struct net_device_stats stats; + struct timer_list timer; /* Media monitoring timer. */ + /* Frequently used values: keep some adjacent for cache effect. */ + int msg_level; + int chip_id, drv_flags; + struct pci_dev *pci_dev; + int csr0, csr6; + unsigned int polling; /* Switched to polling mode. */ + int max_interrupt_work; + + struct w840_rx_desc *rx_head_desc; + unsigned int rx_ring_size; + unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ + unsigned int rx_buf_sz; /* Based on MTU+slack. */ + int rx_copybreak; + + unsigned int tx_ring_size; + unsigned int cur_tx, dirty_tx; + unsigned int tx_q_bytes, tx_unq_bytes; + unsigned int tx_full:1; /* The Tx queue is full. */ + + /* These values track of the transceiver/media in use. */ + unsigned int full_duplex:1; /* Full-duplex operation requested. */ + unsigned int duplex_lock:1; + unsigned int medialock:1; /* Do not sense media. */ + unsigned int default_port; /* Last dev->if_port value. */ + /* Rx filter. */ + u32 cur_rx_mode; + u32 rx_filter[2]; + int multicast_filter_limit; + + /* MII transceiver section. */ + int mii_cnt; /* MII device addresses. */ + u16 advertising; /* NWay media advertisement */ + unsigned char phys[2]; /* MII device addresses. */ +}; + +static int eeprom_read(long ioaddr, int location); +static int mdio_read(struct net_device *dev, int phy_id, int location); +static void mdio_write(struct net_device *dev, int phy_id, int location, int value); +static int netdev_open(struct net_device *dev); +static void check_duplex(struct net_device *dev); +static void netdev_timer(unsigned long data); +static void tx_timeout(struct net_device *dev); +static void init_ring(struct net_device *dev); +static int start_tx(struct sk_buff *skb, struct net_device *dev); +static void intr_handler(int irq, void *dev_instance, struct pt_regs *regs); +static void netdev_error(struct net_device *dev, int intr_status); +static int netdev_rx(struct net_device *dev); +static void netdev_error(struct net_device *dev, int intr_status); +static inline unsigned ether_crc(int length, unsigned char *data); +static void set_rx_mode(struct net_device *dev); +static struct net_device_stats *get_stats(struct net_device *dev); +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +static int netdev_close(struct net_device *dev); + + + +/* A list of our installed devices, for removing the driver module. */ +static struct net_device *root_net_dev = NULL; + +static void *w840_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int card_idx) +{ + struct net_device *dev; + struct netdev_private *np; + void *priv_mem; + int i, option = card_idx < MAX_UNITS ? options[card_idx] : 0; + + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; + +#if LINUX_VERSION_CODE < 0x20155 + printk(KERN_INFO "%s: %s at 0x%lx, %2.2x:%2.2x", + dev->name, pci_id_tbl[chip_idx].name, ioaddr, + pci_bus_number(pdev), pci_devfn(pdev)>>3); +#else + printk(KERN_INFO "%s: %s at 0x%lx, %2.2x:%2.2x", + dev->name, pci_id_tbl[chip_idx].name, ioaddr, + pdev->bus->number, pdev->devfn>>3); +#endif + + /* Warning: validate for big-endian machines. */ + for (i = 0; i < 3; i++) + ((u16 *)dev->dev_addr)[i] = le16_to_cpu(eeprom_read(ioaddr, i)); + + for (i = 0; i < 5; i++) + printk("%2.2x:", dev->dev_addr[i]); + printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq); + + priv_mem = kmalloc(sizeof(*np) + PRIV_ALIGN, GFP_KERNEL); + /* Out of memory is very unlikely. */ + if (priv_mem == NULL) + return NULL; + +#ifdef USE_IO_OPS + request_region(ioaddr, pci_id_tbl[chip_idx].io_size, dev->name); +#endif + + /* Reset the chip to erase previous misconfiguration. + No hold time required! */ + writel(0x00000001, ioaddr + PCIBusCfg); + + dev->base_addr = ioaddr; + dev->irq = irq; + + /* The descriptor lists must be aligned. */ + dev->priv = np = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); + memset(np, 0, sizeof(*np)); + np->priv_addr = priv_mem; + + np->next_module = root_net_dev; + root_net_dev = dev; + + np->pci_dev = pdev; + np->chip_id = chip_idx; + np->drv_flags = pci_id_tbl[chip_idx].drv_flags; + np->msg_level = (1 << debug) - 1; + np->rx_copybreak = rx_copybreak; + np->max_interrupt_work = max_interrupt_work; + np->multicast_filter_limit = multicast_filter_limit; + np->tx_ring_size = TX_RING_SIZE; + np->rx_ring_size = RX_RING_SIZE; + + if (dev->mem_start) + option = dev->mem_start; + + if ((card_idx < MAX_UNITS && full_duplex[card_idx] > 0) + || (np->drv_flags & AlwaysFDX)) + np->full_duplex = 1; + + /* The chip-specific entries in the device structure. */ + dev->open = &netdev_open; + dev->hard_start_xmit = &start_tx; + dev->stop = &netdev_close; + dev->get_stats = &get_stats; + dev->set_multicast_list = &set_rx_mode; + dev->do_ioctl = &mii_ioctl; + + if (np->drv_flags & CanHaveMII) { + int phy, phy_idx = 0; + for (phy = 1; phy < 32 && phy_idx < 4; phy++) { + int mii_status = mdio_read(dev, phy, 1); + if (mii_status != 0xffff && mii_status != 0x0000) { + np->phys[phy_idx++] = phy; + np->advertising = mdio_read(dev, phy, 4); + printk(KERN_INFO "%s: MII PHY found at address %d, status " + "0x%4.4x advertising %4.4x.\n", + dev->name, phy, mii_status, np->advertising); + } + } + np->mii_cnt = phy_idx; + if (phy_idx == 0) { + printk(KERN_WARNING "%s: MII PHY not found -- this device may " + "not operate correctly.\n" + KERN_WARNING "%s: If this is a switch card, explicitly " + "force full duplex on this interface.\n", + dev->name, dev->name); + if (np->drv_flags & FDXOnNoMII) { + printk(KERN_INFO "%s: Assuming a switch card, forcing full " + "duplex.\n", dev->name); + np->full_duplex = np->duplex_lock = 1; + } + } + } + /* Allow forcing the media type. */ + if (np->full_duplex) { + printk(KERN_INFO "%s: Set to forced full duplex, autonegotiation" + " disabled.\n", dev->name); + np->duplex_lock = 1; + } + if (option > 0) { + if (option & 0x220) + np->full_duplex = 1; + np->default_port = option & 0x3ff; + if (np->default_port & 0x330) { + np->medialock = 1; + printk(KERN_INFO " Forcing %dMbs %s-duplex operation.\n", + (option & 0x300 ? 100 : 10), + (np->full_duplex ? "full" : "half")); + if (np->mii_cnt) + mdio_write(dev, np->phys[0], 0, + ((option & 0x300) ? 0x2000 : 0) | /* 100mbps? */ + (np->full_duplex ? 0x0100 : 0)); /* Full duplex? */ + } + } + + return dev; +} + + +/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. + The Winbond NIC uses serial bit streams generated by the host processor. */ + +/* Delay between EEPROM clock transitions. + This "delay" is to force out buffered PCI writes. */ +#define eeprom_delay(ee_addr) readl(ee_addr) + +enum EEPROM_Ctrl_Bits { + EE_ShiftClk=0x02, EE_Write0=0x801, EE_Write1=0x805, + EE_ChipSelect=0x801, EE_DataIn=0x08, +}; + +/* The EEPROM commands always start with 01.. preamble bits. + Commands are prepended to the variable-length address. */ +enum EEPROM_Cmds { + EE_WriteCmd=(5 << 6), EE_ReadCmd=(6 << 6), EE_EraseCmd=(7 << 6), +}; + +static int eeprom_read(long addr, int location) +{ + int i; + int retval = 0; + long ee_addr = addr + EECtrl; + int read_cmd = location | EE_ReadCmd; + + writel(EE_ChipSelect, ee_addr); + /* Shift the read command bits out. */ + for (i = 10; i >= 0; i--) { + short dataval = (read_cmd & (1 << i)) ? EE_Write1 : EE_Write0; + writel(dataval, ee_addr); + eeprom_delay(ee_addr); + writel(dataval | EE_ShiftClk, ee_addr); + eeprom_delay(ee_addr); + } + writel(EE_ChipSelect, ee_addr); + eeprom_delay(ee_addr); + + for (i = 16; i > 0; i--) { + writel(EE_ChipSelect | EE_ShiftClk, ee_addr); + eeprom_delay(ee_addr); + retval = (retval << 1) | ((readl(ee_addr) & EE_DataIn) ? 1 : 0); + writel(EE_ChipSelect, ee_addr); + eeprom_delay(ee_addr); + } + + /* Terminate the EEPROM access. */ + writel(0, ee_addr); + return retval; +} + +/* MII transceiver control section. + Read and write the MII registers using software-generated serial + MDIO protocol. See the MII specifications or DP83840A data sheet + for details. + + The maximum data clock rate is 2.5 Mhz. + The timing is decoupled from the processor clock by flushing the write + from the CPU write buffer with a following read, and using PCI + transaction time. */ +#define mdio_in(mdio_addr) readl(mdio_addr) +#define mdio_out(value, mdio_addr) writel(value, mdio_addr) +#define mdio_delay(mdio_addr) readl(mdio_addr) + +/* Set iff a MII transceiver on any interface requires mdio preamble. + This only set with older tranceivers, so the extra + code size of a per-interface flag is not worthwhile. */ +static char mii_preamble_required = 1; + +#define MDIO_WRITE0 (MDIO_EnbOutput) +#define MDIO_WRITE1 (MDIO_DataOut | MDIO_EnbOutput) + +/* Generate the preamble required for initial synchronization and + a few older transceivers. */ +static void mdio_sync(long mdio_addr) +{ + int bits = 32; + + /* Establish sync by sending at least 32 logic ones. */ + while (--bits >= 0) { + mdio_out(MDIO_WRITE1, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } +} + +static int mdio_read(struct net_device *dev, int phy_id, int location) +{ + long mdio_addr = dev->base_addr + MIICtrl; + int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location; + int i, retval = 0; + + if (mii_preamble_required) + mdio_sync(mdio_addr); + + /* Shift the read command bits out. */ + for (i = 15; i >= 0; i--) { + int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; + + mdio_out(dataval, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(dataval | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + /* Read the two transition, 16 data, and wire-idle bits. */ + for (i = 20; i > 0; i--) { + mdio_out(MDIO_EnbIn, mdio_addr); + mdio_delay(mdio_addr); + retval = (retval << 1) | ((mdio_in(mdio_addr) & MDIO_DataIn) ? 1 : 0); + mdio_out(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + return (retval>>1) & 0xffff; +} + +static void mdio_write(struct net_device *dev, int phy_id, int reg, int value) +{ + long mdio_addr = dev->base_addr + MIICtrl; + int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (reg<<18) | value; + int i; + + if (mii_preamble_required) + mdio_sync(mdio_addr); + + /* Shift the command bits out. */ + for (i = 31; i >= 0; i--) { + int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; + + mdio_out(dataval, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(dataval | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + /* Clear out extra bits. */ + for (i = 2; i > 0; i--) { + mdio_out(MDIO_EnbIn, mdio_addr); + mdio_delay(mdio_addr); + mdio_out(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); + mdio_delay(mdio_addr); + } + return; +} + + +static int netdev_open(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int i; + + writel(0x00000001, ioaddr + PCIBusCfg); /* Reset */ + + MOD_INC_USE_COUNT; + + if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev)) { + MOD_DEC_USE_COUNT; + return -EAGAIN; + } + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: w89c840_open() irq %d.\n", + dev->name, dev->irq); + + init_ring(dev); + + writel(virt_to_bus(np->rx_ring), ioaddr + RxRingPtr); + writel(virt_to_bus(np->tx_ring), ioaddr + TxRingPtr); + + for (i = 0; i < 6; i++) + writeb(dev->dev_addr[i], ioaddr + StationAddr + i); + + /* Initialize other registers. */ + np->csr0 = csr0; + writel(np->csr0, ioaddr + PCIBusCfg); + + if (dev->if_port == 0) + dev->if_port = np->default_port; + + writel(0, ioaddr + RxStartDemand); + np->csr6 = np->full_duplex ? 0x20022202 : 0x20022002; + check_duplex(dev); + set_rx_mode(dev); + + netif_start_tx_queue(dev); + + /* Clear and Enable interrupts by setting the interrupt mask. + See enum intr_status_bits above for bit guide. + We omit: TimerInt, IntrRxDied, IntrTxStopped + */ + writel(0x1A0F5, ioaddr + IntrStatus); + writel(0x1A0F5, ioaddr + IntrEnable); + + if (np->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Done netdev_open().\n", dev->name); + + /* Set the timer to check for link beat. */ + init_timer(&np->timer); + np->timer.expires = jiffies + 3*HZ; + np->timer.data = (unsigned long)dev; + np->timer.function = &netdev_timer; /* timer handler */ + add_timer(&np->timer); + + return 0; +} + +static void check_duplex(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int mii_reg5 = mdio_read(dev, np->phys[0], 5); + int negotiated = mii_reg5 & np->advertising; + int duplex; + + if (np->duplex_lock || mii_reg5 == 0xffff) + return; + duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040; + if (np->full_duplex != duplex) { + np->full_duplex = duplex; + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d " + "negotiated capability %4.4x.\n", dev->name, + duplex ? "full" : "half", np->phys[0], negotiated); + np->csr6 &= ~0x200; + np->csr6 |= duplex ? 0x200 : 0; + } +} + +static void netdev_timer(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int next_tick = 10*HZ; + int old_csr6 = np->csr6; + u32 intr_status = readl(ioaddr + IntrStatus); + + if (np->msg_level & NETIF_MSG_TIMER) + printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x " + "config %8.8x.\n", + dev->name, intr_status, (int)readl(ioaddr + NetworkConfig)); + /* Check for blocked interrupts. */ + if (np->polling) { + if (intr_status & 0x1ffff) { + intr_handler(dev->irq, dev, 0); + next_tick = 1; + np->polling = 1; + } else if (++np->polling > 10*HZ) + np->polling = 0; + else + next_tick = 2; + } else if ((intr_status & 0x1ffff)) { + np->polling = 1; + } + + if (netif_queue_paused(dev) && + np->cur_tx - np->dirty_tx > 1 && + (jiffies - dev->trans_start) > TX_TIMEOUT) { + tx_timeout(dev); + } + check_duplex(dev); + if (np->csr6 != old_csr6) { + writel(np->csr6 & ~0x0002, ioaddr + NetworkConfig); + writel(np->csr6 | 0x2002, ioaddr + NetworkConfig); + } + np->timer.expires = jiffies + next_tick; + add_timer(&np->timer); +} + +static void tx_timeout(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + printk(KERN_WARNING "%s: Transmit timed out, status %8.8x," + " resetting...\n", dev->name, (int)readl(ioaddr + IntrStatus)); + +#ifndef __alpha__ + if (np->msg_level & NETIF_MSG_TX_ERR) { + int i; + printk(KERN_DEBUG " Rx ring %p: ", np->rx_ring); + for (i = 0; i < np->rx_ring_size; i++) + printk(" %8.8x", (unsigned int)np->rx_ring[i].status); + printk("\n"KERN_DEBUG" Tx ring %p: ", np->tx_ring); + for (i = 0; i < np->tx_ring_size; i++) + printk(" %8.8x", np->tx_ring[i].status); + printk("\n"); + } +#endif + + /* Perhaps we should reinitialize the hardware here. Just trigger a + Tx demand for now. */ + writel(0, ioaddr + TxStartDemand); + dev->if_port = 0; + /* Stop and restart the chip's Tx processes . */ + + dev->trans_start = jiffies; + np->stats.tx_errors++; + return; +} + + +/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ +static void init_ring(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int i; + + np->tx_full = 0; + np->cur_tx = np->dirty_tx = 0; + np->tx_q_bytes = np->tx_unq_bytes = 0; + + np->cur_rx = np->dirty_rx = 0; + np->rx_buf_sz = (dev->mtu <= 1522 ? PKT_BUF_SZ : dev->mtu + 14); + np->rx_head_desc = &np->rx_ring[0]; + + /* Initialize all Rx descriptors. */ + for (i = 0; i < np->rx_ring_size; i++) { + np->rx_ring[i].length = np->rx_buf_sz; + np->rx_ring[i].status = 0; + np->rx_ring[i].next_desc = virt_to_bus(&np->rx_ring[i+1]); + np->rx_skbuff[i] = 0; + } + /* Mark the last entry as wrapping the ring. */ + np->rx_ring[i-1].length |= DescEndRing; + np->rx_ring[i-1].next_desc = virt_to_bus(&np->rx_ring[0]); + + /* Fill in the Rx buffers. Handle allocation failure gracefully. */ + for (i = 0; i < np->rx_ring_size; i++) { + struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); + np->rx_skbuff[i] = skb; + if (skb == NULL) + break; + skb->dev = dev; /* Mark as being used by this device. */ + np->rx_ring[i].buffer1 = virt_to_bus(skb->tail); + np->rx_ring[i].status = DescOwn | DescIntr; + } + np->dirty_rx = (unsigned int)(i - np->rx_ring_size); + + for (i = 0; i < np->tx_ring_size; i++) { + np->tx_skbuff[i] = 0; + np->tx_ring[i].status = 0; + } + return; +} + +static int start_tx(struct sk_buff *skb, struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + unsigned entry; + + /* Block a timer-based transmit from overlapping. */ + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + tx_timeout(dev); + return 1; + } + + /* Note: Ordering is important here, set the field with the + "ownership" bit last, and only then increment cur_tx. */ + + /* Calculate the next Tx descriptor entry. */ + entry = np->cur_tx % np->tx_ring_size; + + np->tx_skbuff[entry] = skb; + np->tx_ring[entry].buffer1 = virt_to_bus(skb->data); + +#define one_buffer +#define BPT 1022 +#if defined(one_buffer) + np->tx_ring[entry].length = DescWholePkt | skb->len; + if (entry >= np->tx_ring_size-1) /* Wrap ring */ + np->tx_ring[entry].length |= DescIntr | DescEndRing; + np->tx_ring[entry].status = DescOwn; + np->cur_tx++; +#elif defined(two_buffer) + if (skb->len > BPT) { + unsigned int entry1 = ++np->cur_tx % np->tx_ring_size; + np->tx_ring[entry].length = DescStartPkt | BPT; + np->tx_ring[entry1].length = DescEndPkt | (skb->len - BPT); + np->tx_ring[entry1].buffer1 = virt_to_bus((skb->data) + BPT); + np->tx_ring[entry1].status = DescOwn; + np->tx_ring[entry].status = DescOwn; + if (entry >= np->tx_ring_size-1) + np->tx_ring[entry].length |= DescIntr|DescEndRing; + else if (entry1 >= np->tx_ring_size-1) + np->tx_ring[entry1].length |= DescIntr|DescEndRing; + np->cur_tx++; + } else { + np->tx_ring[entry].length = DescWholePkt | skb->len; + if (entry >= np->tx_ring_size-1) /* Wrap ring */ + np->tx_ring[entry].length |= DescIntr | DescEndRing; + np->tx_ring[entry].status = DescOwn; + np->cur_tx++; + } +#elif defined(split_buffer) + { + /* Work around the Tx-FIFO-full bug by splitting our transmit packet + into two pieces, the first which may be loaded without overflowing + the FIFO, and the second which contains the remainder of the + packet. When we get a Tx-done interrupt that frees enough room + in the FIFO we mark the remainder of the packet as loadable. + + This has the problem that the Tx descriptors are written both + here and in the interrupt handler. + */ + + int buf1size = TX_FIFO_SIZE - (np->tx_q_bytes - np->tx_unq_bytes); + int buf2size = skb->len - buf1size; + + if (buf2size <= 0) { /* We fit into one descriptor. */ + np->tx_ring[entry].length = DescWholePkt | skb->len; + } else { /* We must use two descriptors. */ + unsigned int entry2; + np->tx_ring[entry].length = DescIntr | DescStartPkt | buf1size; + if (entry >= np->tx_ring_size-1) { /* Wrap ring */ + np->tx_ring[entry].length |= DescEndRing; + entry2 = 0; + } else + entry2 = entry + 1; + np->cur_tx++; + np->tx_ring[entry2].buffer1 = + virt_to_bus(skb->data + buf1size); + np->tx_ring[entry2].length = DescEndPkt | buf2size; + if (entry2 >= np->tx_ring_size-1) /* Wrap ring */ + np->tx_ring[entry2].length |= DescEndRing; + } + np->tx_ring[entry].status = DescOwn; + np->cur_tx++; + } +#endif + np->tx_q_bytes += skb->len; + writel(0, dev->base_addr + TxStartDemand); + + /* Work around horrible bug in the chip by marking the queue as full + when we do not have FIFO room for a maximum sized packet. */ + if (np->cur_tx - np->dirty_tx > TX_QUEUE_LEN) { + np->tx_full = 1; + netif_stop_tx_queue(dev); + } else if ((np->drv_flags & HasBrokenTx) + && np->tx_q_bytes - np->tx_unq_bytes > TX_BUG_FIFO_LIMIT) { + np->tx_full = 1; + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); /* Typical path */ + + dev->trans_start = jiffies; + + if (np->msg_level & NETIF_MSG_TX_QUEUED) { + printk(KERN_DEBUG "%s: Transmit frame #%d queued in slot %d.\n", + dev->name, np->cur_tx, entry); + } + return 0; +} + +/* The interrupt handler does all of the Rx thread work and cleans up + after the Tx thread. */ +static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) +{ + struct net_device *dev = (struct net_device *)dev_instance; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + int work_limit = np->max_interrupt_work; + + do { + u32 intr_status = readl(ioaddr + IntrStatus); + + /* Acknowledge all of the current interrupt sources ASAP. */ + writel(intr_status & 0x0001ffff, ioaddr + IntrStatus); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", + dev->name, intr_status); + + if ((intr_status & (NormalIntr|AbnormalIntr)) == 0 + || intr_status == 0xffffffff) + break; + + if (intr_status & (IntrRxDone | RxNoBuf)) + netdev_rx(dev); + + for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { + int entry = np->dirty_tx % np->tx_ring_size; + int tx_status = np->tx_ring[entry].status; + + if (tx_status < 0) + break; + if (np->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG "%s: Transmit done, Tx status %8.8x.\n", + dev->name, tx_status); + if (tx_status & 0x8000) { /* There was an error, log it. */ + if (np->msg_level & NETIF_MSG_TX_ERR) + printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n", + dev->name, tx_status); + np->stats.tx_errors++; + if (tx_status & 0x0104) np->stats.tx_aborted_errors++; + if (tx_status & 0x0C80) np->stats.tx_carrier_errors++; + if (tx_status & 0x0200) np->stats.tx_window_errors++; + if (tx_status & 0x0002) np->stats.tx_fifo_errors++; + if ((tx_status & 0x0080) && np->full_duplex == 0) + np->stats.tx_heartbeat_errors++; +#ifdef ETHER_STATS + if (tx_status & 0x0100) np->stats.collisions16++; +#endif + } else { +#ifdef ETHER_STATS + if (tx_status & 0x0001) np->stats.tx_deferred++; +#endif +#if LINUX_VERSION_CODE > 0x20127 + np->stats.tx_bytes += np->tx_skbuff[entry]->len; +#endif + np->stats.collisions += (tx_status >> 3) & 15; + np->stats.tx_packets++; + } + /* Free the original skb. */ + np->tx_unq_bytes += np->tx_skbuff[entry]->len; + dev_free_skb_irq(np->tx_skbuff[entry]); + np->tx_skbuff[entry] = 0; + } + if (np->tx_full && + np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4 + && np->tx_q_bytes - np->tx_unq_bytes < TX_BUG_FIFO_LIMIT) { + /* The ring is no longer full, allow new TX entries. */ + np->tx_full = 0; + netif_resume_tx_queue(dev); + } + + /* Abnormal error summary/uncommon events handlers. */ + if (intr_status & (AbnormalIntr | TxFIFOUnderflow | IntrPCIErr | + TimerInt | IntrTxStopped)) + netdev_error(dev, intr_status); + + if (--work_limit < 0) { + printk(KERN_WARNING "%s: Too much work at interrupt, " + "status=0x%4.4x.\n", dev->name, intr_status); + /* Set the timer to re-enable the other interrupts after + 10*82usec ticks. */ + writel(AbnormalIntr | TimerInt, ioaddr + IntrEnable); + writel(10, ioaddr + GPTimer); + break; + } + } while (1); + + if (np->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", + dev->name, (int)readl(ioaddr + IntrStatus)); + + return; +} + +/* This routine is logically part of the interrupt handler, but separated + for clarity and better register allocation. */ +static int netdev_rx(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + int entry = np->cur_rx % np->rx_ring_size; + int work_limit = np->dirty_rx + np->rx_ring_size - np->cur_rx; + + if (np->msg_level & NETIF_MSG_RX_STATUS) { + printk(KERN_DEBUG " In netdev_rx(), entry %d status %4.4x.\n", + entry, np->rx_ring[entry].status); + } + + /* If EOP is set on the next entry, it's a new packet. Send it up. */ + while (--work_limit >= 0) { + struct w840_rx_desc *desc = np->rx_head_desc; + s32 status = desc->status; + + if (np->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n", + status); + if (status < 0) + break; + if ((status & 0x38008300) != 0x0300) { + if ((status & 0x38000300) != 0x0300) { + /* Ingore earlier buffers. */ + if ((status & 0xffff) != 0x7fff) { + printk(KERN_WARNING "%s: Oversized Ethernet frame spanned " + "multiple buffers, entry %#x status %4.4x!\n", + dev->name, np->cur_rx, status); + np->stats.rx_length_errors++; + } + } else if (status & 0x8000) { + /* There was a fatal error. */ + if (np->msg_level & NETIF_MSG_RX_ERR) + printk(KERN_DEBUG "%s: Receive error, Rx status %8.8x.\n", + dev->name, status); + np->stats.rx_errors++; /* end of a packet.*/ + if (status & 0x0890) np->stats.rx_length_errors++; + if (status & 0x004C) np->stats.rx_frame_errors++; + if (status & 0x0002) np->stats.rx_crc_errors++; + } + } else { + struct sk_buff *skb; + /* Omit the four octet CRC from the length. */ + int pkt_len = ((status >> 16) & 0x7ff) - 4; + + if (np->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d" + " status %x.\n", pkt_len, status); + /* Check if the packet is long enough to accept without copying + to a minimally-sized skbuff. */ + if (pkt_len < np->rx_copybreak + && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { + skb->dev = dev; + skb_reserve(skb, 2); /* 16 byte align the IP header */ + /* Call copy + cksum if available. */ +#if HAS_IP_COPYSUM + eth_copy_and_sum(skb, np->rx_skbuff[entry]->tail, pkt_len, 0); + skb_put(skb, pkt_len); +#else + memcpy(skb_put(skb, pkt_len), np->rx_skbuff[entry]->tail, + pkt_len); +#endif + } else { + char *temp = skb_put(skb = np->rx_skbuff[entry], pkt_len); + np->rx_skbuff[entry] = NULL; +#ifndef final_version /* Remove after testing. */ + if (bus_to_virt(desc->buffer1) != temp) + printk(KERN_ERR "%s: Internal fault: The skbuff addresses " + "do not match in netdev_rx: %p vs. %p / %p.\n", + dev->name, bus_to_virt(desc->buffer1), + skb->head, temp); +#endif + } + skb->protocol = eth_type_trans(skb, dev); + netif_rx(skb); + dev->last_rx = jiffies; + np->stats.rx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + np->stats.rx_bytes += pkt_len; +#endif + } + entry = (++np->cur_rx) % np->rx_ring_size; + np->rx_head_desc = &np->rx_ring[entry]; + } + + /* Refill the Rx ring buffers. */ + for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) { + struct sk_buff *skb; + entry = np->dirty_rx % np->rx_ring_size; + if (np->rx_skbuff[entry] == NULL) { + skb = dev_alloc_skb(np->rx_buf_sz); + np->rx_skbuff[entry] = skb; + if (skb == NULL) + break; /* Better luck next round. */ + skb->dev = dev; /* Mark as being used by this device. */ + np->rx_ring[entry].buffer1 = virt_to_bus(skb->tail); + } + np->rx_ring[entry].status = DescOwn; + } + + return 0; +} + +static void netdev_error(struct net_device *dev, int intr_status) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + + if (np->msg_level & NETIF_MSG_MISC) + printk(KERN_DEBUG "%s: Abnormal event, %8.8x.\n", + dev->name, intr_status); + if (intr_status == 0xffffffff) + return; + if (intr_status & TxFIFOUnderflow) { + np->csr6 += 0x4000; /* Bump up the Tx threshold */ + if (np->msg_level & NETIF_MSG_TX_ERR) + printk(KERN_DEBUG "%s: Tx underflow, increasing threshold to " + "%8.8x.\n", dev->name, np->csr6); + writel(np->csr6, ioaddr + NetworkConfig); + } + if (intr_status & IntrRxDied) { /* Missed a Rx frame. */ + np->stats.rx_errors++; + } + if (intr_status & TimerInt) { + /* Re-enable other interrupts. */ + writel(0x1A0F5, ioaddr + IntrEnable); + } + np->stats.rx_missed_errors += readl(ioaddr + RxMissed) & 0xffff; + writel(0, ioaddr + RxStartDemand); +} + +static struct net_device_stats *get_stats(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + + /* The chip only need report frame silently dropped. */ + if (netif_running(dev)) + np->stats.rx_missed_errors += readl(ioaddr + RxMissed) & 0xffff; + + return &np->stats; +} + +static unsigned const ethernet_polynomial = 0x04c11db7U; +static inline u32 ether_crc(int length, unsigned char *data) +{ + int crc = -1; + + while(--length >= 0) { + unsigned char current_octet = *data++; + int bit; + for (bit = 0; bit < 8; bit++, current_octet >>= 1) { + crc = (crc << 1) ^ + ((crc < 0) ^ (current_octet & 1) ? ethernet_polynomial : 0); + } + } + return crc; +} + +static void set_rx_mode(struct net_device *dev) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + u32 mc_filter[2]; /* Multicast hash filter */ + u32 rx_mode; + + if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ + /* Unconditionally log net taps. */ + printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); + memset(mc_filter, ~0, sizeof(mc_filter)); + rx_mode = AcceptBroadcast | AcceptMulticast | AcceptAllPhys; + } else if ((dev->mc_count > np->multicast_filter_limit) + || (dev->flags & IFF_ALLMULTI)) { + /* Too many to match, or accept all multicasts. */ + memset(mc_filter, 0xff, sizeof(mc_filter)); + rx_mode = AcceptBroadcast | AcceptMulticast; + } else { + struct dev_mc_list *mclist; + int i; + memset(mc_filter, 0, sizeof(mc_filter)); + for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; + i++, mclist = mclist->next) { + set_bit((ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26) ^ 0x3F, + mc_filter); + } + rx_mode = AcceptBroadcast | AcceptMulticast; + } + writel(mc_filter[0], ioaddr + MulticastFilter0); + writel(mc_filter[1], ioaddr + MulticastFilter1); + np->csr6 &= ~0x00F8; + np->csr6 |= rx_mode; + writel(np->csr6, ioaddr + NetworkConfig); +} + +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct netdev_private *np = (struct netdev_private *)dev->priv; + u16 *data = (u16 *)&rq->ifr_data; + u32 *data32 = (void *)&rq->ifr_data; + + switch(cmd) { + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ + data[0] = np->phys[0] & 0x1f; + /* Fall Through */ + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + data[3] = mdio_read(dev, data[0] & 0x1f, data[1] & 0x1f); + return 0; + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (data[0] == np->phys[0]) { + u16 value = data[2]; + switch (data[1]) { + case 0: + /* Check for autonegotiation on or reset. */ + np->medialock = (value & 0x9000) ? 0 : 1; + if (np->medialock) + np->full_duplex = (value & 0x0100) ? 1 : 0; + break; + case 4: np->advertising = value; break; + } + /* Perhaps check_duplex(dev), depending on chip semantics. */ + } + mdio_write(dev, data[0] & 0x1f, data[1] & 0x1f, data[2]); + return 0; + case SIOCGPARAMS: + data32[0] = np->msg_level; + data32[1] = np->multicast_filter_limit; + data32[2] = np->max_interrupt_work; + data32[3] = np->rx_copybreak; + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + np->msg_level = data32[0]; + np->multicast_filter_limit = data32[1]; + np->max_interrupt_work = data32[2]; + np->rx_copybreak = data32[3]; + return 0; + default: + return -EOPNOTSUPP; + } +} + + +static void empty_rings(struct net_device *dev) +{ + struct netdev_private *np = (void *)dev->priv; + int i; + + /* Free all the skbuffs in the Rx queue. */ + for (i = 0; i < np->rx_ring_size; i++) { + np->rx_ring[i].status = 0; + if (np->rx_skbuff[i]) { +#if LINUX_VERSION_CODE < 0x20100 + np->rx_skbuff[i]->free = 1; +#endif + dev_free_skb(np->rx_skbuff[i]); + } + np->rx_skbuff[i] = 0; + } + for (i = 0; i < np->tx_ring_size; i++) { + if (np->tx_skbuff[i]) + dev_free_skb(np->tx_skbuff[i]); + np->tx_skbuff[i] = 0; + } +} + +static int netdev_close(struct net_device *dev) +{ + long ioaddr = dev->base_addr; + struct netdev_private *np = (struct netdev_private *)dev->priv; + + netif_stop_tx_queue(dev); + + if (np->msg_level & NETIF_MSG_IFDOWN) { + printk(KERN_DEBUG "%s: Shutting down ethercard, status was %8.8x " + "Config %8.8x.\n", dev->name, (int)readl(ioaddr + IntrStatus), + (int)readl(ioaddr + NetworkConfig)); + printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", + dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx); + } + + /* Disable interrupts by clearing the interrupt mask. */ + writel(0x0000, ioaddr + IntrEnable); + + /* Stop the chip's Tx and Rx processes. */ + writel(np->csr6 &= ~0x20FA, ioaddr + NetworkConfig); + + del_timer(&np->timer); + if (readl(ioaddr + NetworkConfig) != 0xffffffff) + np->stats.rx_missed_errors += readl(ioaddr + RxMissed) & 0xffff; + +#ifdef __i386__ + if (np->msg_level & NETIF_MSG_IFDOWN) { + int i; + printk("\n"KERN_DEBUG" Tx ring at %8.8x:\n", + (int)virt_to_bus(np->tx_ring)); + for (i = 0; i < np->tx_ring_size; i++) + printk(KERN_DEBUG " #%d desc. %4.4x %8.8x %8.8x.\n", + i, np->tx_ring[i].length, + np->tx_ring[i].status, np->tx_ring[i].buffer1); + printk(KERN_DEBUG "\n" KERN_DEBUG " Rx ring %8.8x:\n", + (int)virt_to_bus(np->rx_ring)); + for (i = 0; i < np->rx_ring_size; i++) { + printk(KERN_DEBUG " #%d desc. %4.4x %4.4x %8.8x\n", + i, np->rx_ring[i].length, + np->rx_ring[i].status, np->rx_ring[i].buffer1); + } + } +#endif /* __i386__ debugging only */ + + free_irq(dev->irq, dev); + empty_rings(dev); + + MOD_DEC_USE_COUNT; + + return 0; +} + +static int winbond_pwr_event(void *dev_instance, int event) +{ + struct net_device *dev = dev_instance; + struct netdev_private *np = (struct netdev_private *)dev->priv; + long ioaddr = dev->base_addr; + + if (np->msg_level & NETIF_MSG_LINK) + printk(KERN_DEBUG "%s: Handling power event %d.\n", dev->name, event); + switch(event) { + case DRV_ATTACH: + MOD_INC_USE_COUNT; + break; + case DRV_SUSPEND: { + int csr6 = readl(ioaddr + NetworkConfig); + /* Disable interrupts, stop the chip, gather stats. */ + if (csr6 != 0xffffffff) { + int csr8 = readl(ioaddr + RxMissed); + writel(0x00000000, ioaddr + IntrEnable); + writel(csr6 & ~TxOn & ~RxOn, ioaddr + NetworkConfig); + np->stats.rx_missed_errors += (unsigned short)csr8; + } + empty_rings(dev); + break; + } + case DRV_RESUME: + writel(np->csr0, ioaddr + PCIBusCfg); + init_ring(dev); + writel(virt_to_bus(np->rx_ring), ioaddr + RxRingPtr); + writel(virt_to_bus(np->tx_ring), ioaddr + TxRingPtr); + writel(0x1A0F5, ioaddr + IntrStatus); + writel(0x1A0F5, ioaddr + IntrEnable); + writel(np->csr6 | TxOn | RxOn, ioaddr + NetworkConfig); + writel(0, ioaddr + RxStartDemand); /* Rx poll demand */ + set_rx_mode(dev); + break; + case DRV_DETACH: { + struct net_device **devp, **next; + if (dev->flags & IFF_UP) { + printk(KERN_ERR "%s: Winbond-840 NIC removed while still " + "active.\n", dev->name); + dev_close(dev); + dev->flags &= ~(IFF_UP|IFF_RUNNING); + } + unregister_netdev(dev); + release_region(dev->base_addr, pci_id_tbl[np->chip_id].io_size); +#ifndef USE_IO_OPS + iounmap((char *)dev->base_addr); +#endif + for (devp = &root_net_dev; *devp; devp = next) { + next = &((struct netdev_private *)(*devp)->priv)->next_module; + if (*devp == dev) { + *devp = *next; + break; + } + } + if (np->priv_addr) + kfree(np->priv_addr); + kfree(dev); + MOD_DEC_USE_COUNT; + break; + } + default: + break; + } + + return 0; +} + + +#ifdef MODULE +int init_module(void) +{ + if (debug >= NETIF_MSG_DRV) /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return pci_drv_register(&winbond840_drv_id, NULL); +} + +void cleanup_module(void) +{ + struct net_device *next_dev; + + pci_drv_unregister(&winbond840_drv_id); + + /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ + while (root_net_dev) { + struct netdev_private *np = (void *)(root_net_dev->priv); + unregister_netdev(root_net_dev); +#ifdef USE_IO_OPS + release_region(root_net_dev->base_addr, + pci_id_tbl[np->chip_id].io_size); +#else + iounmap((char *)(root_net_dev->base_addr)); +#endif + next_dev = np->next_module; + if (np->priv_addr) + kfree(np->priv_addr); + kfree(root_net_dev); + root_net_dev = next_dev; + } +} +#else +int winbond840_probe(struct net_device *dev) +{ + if (pci_drv_register(&winbond840_drv_id, dev) < 0) + return -ENODEV; + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return 0; +} +#endif /* MODULE */ + + +/* + * Local variables: + * compile-command: "make KERNVER=`uname -r` winbond-840.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c winbond-840.c" + * c-indent-level: 4 + * c-basic-offset: 4 + * tab-width: 4 + * End: + */ diff --git a/linux/src/drivers/net/yellowfin.c b/linux/src/drivers/net/yellowfin.c index 8c2b5df..9d7ace8 100644 --- a/linux/src/drivers/net/yellowfin.c +++ b/linux/src/drivers/net/yellowfin.c @@ -1,28 +1,47 @@ /* yellowfin.c: A Packet Engines G-NIC ethernet driver for linux. */ /* - Written 1997-1998 by Donald Becker. + Written 1997-2003 by Donald Becker. - This software may be used and distributed according to the terms - of the GNU Public License, incorporated herein by reference. + This software may be used and distributed according to the terms of + the GNU General Public License (GPL), incorporated herein by reference. + Drivers based on or derived from this code fall under the GPL and must + retain the authorship, copyright and license notice. This file is not + a complete program and may only be used when the entire operating + system is licensed under the GPL. This driver is for the Packet Engines G-NIC PCI Gigabit Ethernet adapter. It also supports the Symbios Logic version of the same chip core. - The author may be reached as becker@CESDIS.gsfc.nasa.gov, or C/O - Center of Excellence in Space Data and Information Sciences - Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771 + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 914 Bay Ridge Road, Suite 220 + Annapolis MD 21403 - Support and updates available at - http://cesdis.gsfc.nasa.gov/linux/drivers/yellowfin.html + Support information and updates available at + http://www.scyld.com/network/yellowfin.html + The information and support mailing lists are based at + http://www.scyld.com/mailman/listinfo/ */ -static const char *version = "yellowfin.c:v0.99A 4/7/98 becker@cesdis.gsfc.nasa.gov\n"; +/* These identify the driver base version and may not be removed. */ +static const char version1[] = +"yellowfin.c:v1.10 7/22/2003 Written by Donald Becker <becker@scyld.com>\n"; +static const char version2[] = +" http://www.scyld.com/network/yellowfin.html\n"; -/* A few user-configurable values. */ +/* The user-configurable values. + These may be modified when a driver module is loaded.*/ +/* Message enable level: 0..31 = no..all messages. See NETIF_MSG docs. */ +static int debug = 2; + +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ static int max_interrupt_work = 20; -static int min_pci_latency = 64; -static int mtu = 0; + +/* Maximum number of multicast addresses to filter (vs. rx-all-multicast). + Typical is a 64 element hash table based on the Ethernet CRC. */ +static int multicast_filter_limit = 64; + #ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ /* System-wide count of bogus-rx frames. */ static int bogus_rx = 0; @@ -38,109 +57,121 @@ static int fifo_cfg = 0x0020; /* Bypass external Tx FIFO. */ /* Set the copy breakpoint for the copy-only-tiny-frames scheme. Setting to > 1518 effectively disables this feature. */ -static const int rx_copybreak = 100; +static int rx_copybreak = 0; + +/* Used to pass the media type, etc. + No media types are currently defined. These options exist only for + compatibility with other drivers. +*/ +#define MAX_UNITS 8 /* More are supported, limit only on options */ +static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; +static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; + +/* Do ugly workaround for GX server chipset errata. */ +static int gx_fix = 0; + +/* Operational parameters that are set at compile time. */ /* Keep the ring sizes a power of two for efficiency. Making the Tx ring too large decreases the effectiveness of channel - bonding and packet priority. - There are no ill effects from too-large receive rings. */ + bonding and packet priority, confuses the system network buffer limits, + and wastes memory. + Too-large receive rings waste memory and confound network buffer limits. +*/ #define TX_RING_SIZE 16 -#define RX_RING_SIZE 32 +#define TX_QUEUE_SIZE 12 /* Must be > 4 && <= TX_RING_SIZE */ +#define RX_RING_SIZE 64 /* Operational parameters that usually are not changed. */ /* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT ((2000*HZ)/1000) +#define TX_TIMEOUT (6*HZ) + +/* Allocation size of Rx buffers with normal sized Ethernet frames. + Do not change this value without good reason. This is not a limit, + but a way to keep a consistent allocation size among drivers. + */ +#define PKT_BUF_SZ 1536 + +#ifndef __KERNEL__ +#define __KERNEL__ +#endif +#if !defined(__OPTIMIZE__) +#warning You must compile this file with the correct options! +#warning See the last lines of the source file. +#error You must compile this driver with "-O". +#endif #include <linux/config.h> -#ifdef MODULE -#ifdef MODVERSIONS -#include <linux/modversions.h> +#if defined(CONFIG_SMP) && ! defined(__SMP__) +#define __SMP__ #endif -#include <linux/module.h> +#if defined(MODULE) && defined(CONFIG_MODVERSIONS) && ! defined(MODVERSIONS) +#define MODVERSIONS +#endif + #include <linux/version.h> -#else -#define MOD_INC_USE_COUNT -#define MOD_DEC_USE_COUNT +#if defined(MODVERSIONS) +#include <linux/modversions.h> #endif +#include <linux/module.h> #include <linux/kernel.h> -#include <linux/sched.h> #include <linux/string.h> #include <linux/timer.h> -#include <linux/ptrace.h> #include <linux/errno.h> #include <linux/ioport.h> +#if LINUX_VERSION_CODE >= 0x20400 +#include <linux/slab.h> +#else #include <linux/malloc.h> +#endif #include <linux/interrupt.h> #include <linux/pci.h> -#include <linux/bios32.h> -#include <asm/processor.h> /* Processor type for cache alignment. */ -#include <asm/bitops.h> -#include <asm/io.h> - #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> +#include <asm/processor.h> /* Processor type for cache alignment. */ +#include <asm/unaligned.h> +#include <asm/bitops.h> +#include <asm/io.h> -/* Kernel compatibility defines, common to David Hind's PCMCIA package. - This is only in the support-all-kernels source code. */ -#include <linux/version.h> /* Evil, but neccessary */ - -#if defined (LINUX_VERSION_CODE) && LINUX_VERSION_CODE < 0x10300 -#define RUN_AT(x) (x) /* What to put in timer->expires. */ -#define DEV_ALLOC_SKB(len) alloc_skb(len, GFP_ATOMIC) -#define virt_to_bus(addr) ((unsigned long)addr) -#define bus_to_virt(addr) ((void*)addr) - -#else /* 1.3.0 and later */ -#define RUN_AT(x) (jiffies + (x)) -#define DEV_ALLOC_SKB(len) dev_alloc_skb(len + 2) -#endif - -#if defined (LINUX_VERSION_CODE) && LINUX_VERSION_CODE < 0x10338 -#ifdef MODULE -#if !defined(CONFIG_MODVERSIONS) && !defined(__NO_VERSION__) -char kernel_version[] = UTS_RELEASE; -#endif -#else -#undef MOD_INC_USE_COUNT -#define MOD_INC_USE_COUNT -#undef MOD_DEC_USE_COUNT -#define MOD_DEC_USE_COUNT -#endif -#endif /* 1.3.38 */ - -#if (LINUX_VERSION_CODE >= 0x10344) -#define NEW_MULTICAST -#include <linux/delay.h> -#endif -#if (LINUX_VERSION_CODE >= 0x20100) -char kernel_version[] = UTS_RELEASE; -#endif -#ifdef SA_SHIRQ -#define IRQ(irq, dev_id, pt_regs) (irq, dev_id, pt_regs) +#ifdef INLINE_PCISCAN +#include "k_compat.h" #else -#define IRQ(irq, dev_id, pt_regs) (irq, pt_regs) -#endif -#if (LINUX_VERSION_CODE < 0x20123) -#define test_and_set_bit(val, addr) set_bit(val, addr) +#include "pci-scan.h" +#include "kern_compat.h" #endif -static const char *card_name = "Yellowfin G-NIC Gbit Ethernet"; - -/* The PCI I/O space extent. */ -#define YELLOWFIN_TOTAL_SIZE 0x100 +/* Condensed operations for readability. */ +#define virt_to_le32desc(addr) cpu_to_le32(virt_to_bus(addr)) +#define le32desc_to_virt(addr) bus_to_virt(le32_to_cpu(addr)) -#ifdef HAVE_DEVLIST -struct netdev_entry yellowfin_drv = -{card_name, yellowfin_pci_probe, YELLOWFIN_TOTAL_SIZE, NULL}; +#if (LINUX_VERSION_CODE >= 0x20100) && defined(MODULE) +char kernel_version[] = UTS_RELEASE; #endif -#ifdef YELLOWFIN_DEBUG -int yellowfin_debug = YELLOWFIN_DEBUG; -#else -int yellowfin_debug = 1; -#endif +MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); +MODULE_DESCRIPTION("Packet Engines Yellowfin G-NIC Gigabit Ethernet driver"); +MODULE_LICENSE("GPL"); +MODULE_PARM(debug, "i"); +MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(rx_copybreak, "i"); +MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); +MODULE_PARM(multicast_filter_limit, "i"); +MODULE_PARM(max_interrupt_work, "i"); +MODULE_PARM(gx_fix, "i"); +MODULE_PARM_DESC(debug, "Driver message level enable (0-31)"); +MODULE_PARM_DESC(options, "Force transceiver type or fixed speed+duplex"); +MODULE_PARM_DESC(rx_copybreak, + "Breakpoint in bytes for copy-only-tiny-frames"); +MODULE_PARM_DESC(full_duplex, + "Non-zero to force full duplex, non-negotiated link " + "(deprecated)."); +MODULE_PARM_DESC(max_interrupt_work, + "Driver maximum events handled per interrupt"); +MODULE_PARM_DESC(multicast_filter_limit, + "Multicast addresses before switching to Rx-all-multicast"); +MODULE_PARM_DESC(gx_fix, "Set to work around old GX chipset errata"); /* Theory of Operation @@ -203,29 +234,50 @@ clears both the tx_full and tbusy flags. IV. Notes Thanks to Kim Stearns of Packet Engines for providing a pair of G-NIC boards. +Thanks to Bruce Faust of Digitalscape for providing both their SYM53C885 board +and an AlphaStation to verifty the Alpha port! IVb. References Yellowfin Engineering Design Specification, 4/23/97 Preliminary/Confidential +Symbios SYM53C885 PCI-SCSI/Fast Ethernet Multifunction Controller Preliminary + Data Manual v3.0 +http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html http://cesdis.gsfc.nasa.gov/linux/misc/100mbps.html IVc. Errata -See Packet Engines confidential appendix. - +See Packet Engines confidential appendix (prototype chips only). */ + -/* A few values that may be tweaked. */ -#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ -#ifndef PCI_VENDOR_ID_PKT_ENG /* To be defined in linux/pci.h */ -#define PCI_VENDOR_ID_PKT_ENG 0x1000 /* Hmm, likely number.. */ -#define PCI_DEVICE_ID_YELLOWFIN 0x0702 +static void *yellowfin_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int fnd_cnt); +enum capability_flags { + HasMII=1, FullTxStatus=2, IsGigabit=4, HasMulticastBug=8, FullRxStatus=16, + HasMACAddrBug=32, /* Only on early revs. */ +}; +/* The PCI I/O space extent. */ +#define YELLOWFIN_SIZE 0x100 +#ifdef USE_IO_OPS +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_IO | PCI_ADDR0) +#else +#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_MEM | PCI_ADDR1) #endif -/* The rest of these values should never change. */ +static struct pci_id_info pci_id_tbl[] = { + {"Yellowfin G-NIC Gigabit Ethernet", { 0x07021000, 0xffffffff}, + PCI_IOTYPE, YELLOWFIN_SIZE, + FullTxStatus | IsGigabit | HasMulticastBug | HasMACAddrBug}, + {"Symbios SYM83C885", { 0x07011000, 0xffffffff}, + PCI_IOTYPE, YELLOWFIN_SIZE, HasMII }, + {0,}, +}; -static void yellowfin_timer(unsigned long data); +struct drv_id_info yellowfin_drv_id = { + "yellowfin", PCI_HOTSWAP, PCI_CLASS_NETWORK_ETHERNET<<8, pci_id_tbl, + yellowfin_probe1, }; /* Offsets to the Yellowfin registers. Various sizes and alignments. */ enum yellowfin_offsets { @@ -234,33 +286,45 @@ enum yellowfin_offsets { RxCtrl=0x40, RxStatus=0x44, RxPtr=0x4C, RxIntrSel=0x50, RxBranchSel=0x54, RxWaitSel=0x58, EventStatus=0x80, IntrEnb=0x82, IntrClear=0x84, IntrStatus=0x86, - ChipRev=0x8C, DMACtrl=0x90, Cnfg=0xA0, RxDepth=0xB8, FlowCtrl=0xBC, + ChipRev=0x8C, DMACtrl=0x90, TxThreshold=0x94, + Cnfg=0xA0, FrameGap0=0xA2, FrameGap1=0xA4, + MII_Cmd=0xA6, MII_Addr=0xA8, MII_Wr_Data=0xAA, MII_Rd_Data=0xAC, + MII_Status=0xAE, + RxDepth=0xB8, FlowCtrl=0xBC, AddrMode=0xD0, StnAddr=0xD2, HashTbl=0xD8, FIFOcfg=0xF8, + EEStatus=0xF0, EECtrl=0xF1, EEAddr=0xF2, EERead=0xF3, EEWrite=0xF4, + EEFeature=0xF5, }; -/* The Yellowfin Rx and Tx buffer descriptors. */ +/* The Yellowfin Rx and Tx buffer descriptors. + Elements are written as 32 bit for endian portability. */ struct yellowfin_desc { - u16 request_cnt; - u16 cmd; + u32 dbdma_cmd; u32 addr; u32 branch_addr; - u16 result_cnt; - u16 status; + u32 result_status; }; struct tx_status_words { +#if defined(__powerpc__) + u16 tx_errs; + u16 tx_cnt; + u16 paused; + u16 total_tx_cnt; +#else /* Little endian chips. */ u16 tx_cnt; u16 tx_errs; u16 total_tx_cnt; u16 paused; +#endif }; /* Bits in yellowfin_desc.cmd */ enum desc_cmd_bits { - CMD_TX_PKT=0x1000, CMD_RX_BUF=0x2000, CMD_TXSTATUS=0x3000, - CMD_NOP=0x6000, CMD_STOP=0x7000, - BRANCH_ALWAYS=0x0C, INTR_ALWAYS=0x30, WAIT_ALWAYS=0x03, - BRANCH_IFTRUE=0x04, + CMD_TX_PKT=0x10000000, CMD_RX_BUF=0x20000000, CMD_TXSTATUS=0x30000000, + CMD_NOP=0x60000000, CMD_STOP=0x70000000, + BRANCH_ALWAYS=0x0C0000, INTR_ALWAYS=0x300000, WAIT_ALWAYS=0x030000, + BRANCH_IFTRUE=0x040000, }; /* Bits in yellowfin_desc.status */ @@ -272,227 +336,159 @@ enum intr_status_bits { IntrTxDone=0x10, IntrTxInvalid=0x20, IntrTxPCIFault=0x40,IntrTxPCIErr=0x80, IntrEarlyRx=0x100, IntrWakeup=0x200, }; +#define PRIV_ALIGN 31 /* Required alignment mask */ struct yellowfin_private { - /* Descriptor rings first for alignment. Tx requires a second descriptor - for status. */ + /* Descriptor rings first for alignment. + Tx requires a second descriptor for status. */ struct yellowfin_desc rx_ring[RX_RING_SIZE]; struct yellowfin_desc tx_ring[TX_RING_SIZE*2]; - const char *product_name; - struct device *next_module; - /* The saved address of a sent-in-place packet/buffer, for skfree(). */ - struct sk_buff* tx_skbuff[TX_RING_SIZE]; - struct tx_status_words tx_status[TX_RING_SIZE]; + struct net_device *next_module; + void *priv_addr; /* Unaligned address for kfree */ /* The addresses of receive-in-place skbuffs. */ struct sk_buff* rx_skbuff[RX_RING_SIZE]; - int chip_id; - struct enet_statistics stats; + /* The saved address of a sent-in-place packet/buffer, for later free(). */ + struct sk_buff* tx_skbuff[TX_RING_SIZE]; + struct tx_status_words tx_status[TX_RING_SIZE]; struct timer_list timer; /* Media selection timer. */ - int in_interrupt; - unsigned int cur_rx, cur_tx; /* The next free ring entry */ - unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */ + struct net_device_stats stats; + /* Frequently used and paired value: keep adjacent for cache effect. */ + int msg_level; + int chip_id, drv_flags; + struct pci_dev *pci_dev; + long in_interrupt; + int max_interrupt_work; + + struct yellowfin_desc *rx_head_desc; + unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ + unsigned int rx_buf_sz; /* Based on MTU+slack. */ + int rx_copybreak; + + struct tx_status_words *tx_tail_desc; + unsigned int cur_tx, dirty_tx; + int tx_threshold; unsigned int tx_full:1; /* The Tx queue is full. */ unsigned int full_duplex:1; /* Full-duplex operation requested. */ + unsigned int duplex_lock:1; unsigned int medialock:1; /* Do not sense media. */ - unsigned int default_port:4; /* Last dev->if_port value. */ - u32 pad[4]; /* Used for 32-byte alignment */ + unsigned int default_port; /* Last dev->if_port value. */ + /* MII transceiver section. */ + int mii_cnt; /* MII device addresses. */ + u16 advertising; /* NWay media advertisement */ + unsigned char phys[2]; /* MII device addresses. */ + /* Rx multicast filter. */ + u16 mc_filter[4]; + int rx_mode; + int multicast_filter_limit; }; -#ifdef MODULE -/* Used to pass the media type, etc. */ -#define MAX_UNITS 8 /* More are supported, limit only on options */ -static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; - -#if LINUX_VERSION_CODE > 0x20115 -MODULE_AUTHOR("Donald Becker <becker@cesdis.gsfc.nasa.gov>"); -MODULE_DESCRIPTION("Packet Engines Yellowfin G-NIC Gigabit Ethernet driver"); -MODULE_PARM(max_interrupt_work, "i"); -MODULE_PARM(min_pci_latency, "i"); -MODULE_PARM(mtu, "i"); -MODULE_PARM(debug, "i"); -MODULE_PARM(rx_copybreak, "i"); -MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); -#endif - +static int read_eeprom(long ioaddr, int location); +static int mdio_read(long ioaddr, int phy_id, int location); +static void mdio_write(long ioaddr, int phy_id, int location, int value); +#ifdef HAVE_PRIVATE_IOCTL +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); #endif - -static struct device *yellowfin_probe1(struct device *dev, int ioaddr, int irq, - int chip_id, int options); -static int yellowfin_open(struct device *dev); +static int yellowfin_open(struct net_device *dev); static void yellowfin_timer(unsigned long data); -static void yellowfin_tx_timeout(struct device *dev); -static void yellowfin_init_ring(struct device *dev); -static int yellowfin_start_xmit(struct sk_buff *skb, struct device *dev); -static int yellowfin_rx(struct device *dev); -static void yellowfin_interrupt IRQ(int irq, void *dev_instance, struct pt_regs *regs); -static int yellowfin_close(struct device *dev); -static struct enet_statistics *yellowfin_get_stats(struct device *dev); -#ifdef NEW_MULTICAST -static void set_rx_mode(struct device *dev); -#else -static void set_rx_mode(struct device *dev, int num_addrs, void *addrs); -#endif +static void yellowfin_tx_timeout(struct net_device *dev); +static void yellowfin_init_ring(struct net_device *dev); +static int yellowfin_start_xmit(struct sk_buff *skb, struct net_device *dev); +static void yellowfin_interrupt(int irq, void *dev_instance, struct pt_regs *regs); +static int yellowfin_rx(struct net_device *dev); +static void yellowfin_error(struct net_device *dev, int intr_status); +static int yellowfin_close(struct net_device *dev); +static struct net_device_stats *yellowfin_get_stats(struct net_device *dev); +static void set_rx_mode(struct net_device *dev); -#ifdef MODULE -/* A list of all installed Yellowfin devices, for removing the driver module. */ -static struct device *root_yellowfin_dev = NULL; -#endif +/* A list of installed Yellowfin devices, for removing the driver module. */ +static struct net_device *root_yellowfin_dev = NULL; -int yellowfin_probe(struct device *dev) +#ifndef MODULE +int yellowfin_probe(struct net_device *dev) { - int cards_found = 0; - static int pci_index = 0; /* Static, for multiple probe calls. */ - - /* Ideally we would detect all network cards in slot order. That would - be best done a central PCI probe dispatch, which wouldn't work - well with the current structure. So instead we detect just the - Yellowfin cards in slot order. */ - - if (pcibios_present()) { - unsigned char pci_bus, pci_device_fn; - - for (;pci_index < 0xff; pci_index++) { - u8 pci_irq_line, pci_latency; - u16 pci_command, vendor, device; - u32 pci_ioaddr, chip_idx = 0; - -#ifdef REVERSE_PROBE_ORDER - if (pcibios_find_class (PCI_CLASS_NETWORK_ETHERNET << 8, - 0xfe - pci_index, - &pci_bus, &pci_device_fn) - != PCIBIOS_SUCCESSFUL) - continue; -#else - if (pcibios_find_class (PCI_CLASS_NETWORK_ETHERNET << 8, - pci_index, - &pci_bus, &pci_device_fn) - != PCIBIOS_SUCCESSFUL) - break; -#endif - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_VENDOR_ID, &vendor); - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_DEVICE_ID, &device); - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_INTERRUPT_LINE, &pci_irq_line); - pcibios_read_config_dword(pci_bus, pci_device_fn, - PCI_BASE_ADDRESS_0, &pci_ioaddr); - /* Remove I/O space marker in bit 0. */ - pci_ioaddr &= ~3; - - if (vendor != PCI_VENDOR_ID_PKT_ENG) - continue; - - if (device != PCI_DEVICE_ID_YELLOWFIN) - continue; - - if (yellowfin_debug > 2) - printk("Found Packet Engines Yellowfin G-NIC at I/O %#x, IRQ %d.\n", - pci_ioaddr, pci_irq_line); - - if (check_region(pci_ioaddr, YELLOWFIN_TOTAL_SIZE)) - continue; - -#ifdef MODULE - dev = yellowfin_probe1(dev, pci_ioaddr, pci_irq_line, chip_idx, - cards_found < MAX_UNITS ? options[cards_found] : 0); -#else - dev = yellowfin_probe1(dev, pci_ioaddr, pci_irq_line, chip_idx, - dev ? dev->mem_start : 0); -#endif - - if (dev) { - /* Get and check the bus-master and latency values. */ - pcibios_read_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, &pci_command); - if ( ! (pci_command & PCI_COMMAND_MASTER)) { - printk(" PCI Master Bit has not been set! Setting...\n"); - pci_command |= PCI_COMMAND_MASTER; - pcibios_write_config_word(pci_bus, pci_device_fn, - PCI_COMMAND, pci_command); - } - pcibios_read_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, &pci_latency); - if (pci_latency < min_pci_latency) { - printk(" PCI latency timer (CFLT) is unreasonably low at %d." - " Setting to %d clocks.\n", - pci_latency, min_pci_latency); - pcibios_write_config_byte(pci_bus, pci_device_fn, - PCI_LATENCY_TIMER, min_pci_latency); - } else if (yellowfin_debug > 1) - printk(" PCI latency timer (CFLT) is %#x.\n", pci_latency); - dev = 0; - cards_found++; - } - } - } - -#if defined (MODULE) - return cards_found; -#else - return cards_found ? 0 : -ENODEV; -#endif + if (pci_drv_register(&yellowfin_drv_id, dev) < 0) + return -ENODEV; + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return 0; } +#endif -static struct device *yellowfin_probe1(struct device *dev, int ioaddr, int irq, - int chip_id, int options) +static void *yellowfin_probe1(struct pci_dev *pdev, void *init_dev, + long ioaddr, int irq, int chip_idx, int find_cnt) { - static int did_version = 0; /* Already printed version info. */ - struct yellowfin_private *yp; - int i; - - if (yellowfin_debug > 0 && did_version++ == 0) - printk(version); - - dev = init_etherdev(dev, sizeof(struct yellowfin_private)); - - printk("%s: P-E Yellowfin type %8x at %#3x, ", - dev->name, inl(ioaddr + ChipRev), ioaddr); - + struct net_device *dev; + struct yellowfin_private *np; + void *priv_mem; + int i, option = find_cnt < MAX_UNITS ? options[find_cnt] : 0; + int drv_flags = pci_id_tbl[chip_idx].drv_flags; + + dev = init_etherdev(init_dev, 0); + if (!dev) + return NULL; + + printk(KERN_INFO "%s: %s type %8x at 0x%lx, ", + dev->name, pci_id_tbl[chip_idx].name, (int)inl(ioaddr + ChipRev), + ioaddr); + + if (drv_flags & IsGigabit) + for (i = 0; i < 6; i++) + dev->dev_addr[i] = inb(ioaddr + StnAddr + i); + else { + int ee_offset = (read_eeprom(ioaddr, 6) == 0xff ? 0x100 : 0); + for (i = 0; i < 6; i++) + dev->dev_addr[i] = read_eeprom(ioaddr, ee_offset + i); + } for (i = 0; i < 5; i++) - printk("%2.2x:", inb(ioaddr + StnAddr + i)); - printk("%2.2x, IRQ %d.\n", inb(ioaddr + StnAddr + i), irq); - for (i = 0; i < 6; i++) - dev->dev_addr[i] = inb(ioaddr + StnAddr + i); + printk("%2.2x:", dev->dev_addr[i]); + printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq); /* Reset the chip. */ outl(0x80000000, ioaddr + DMACtrl); + /* Make certain elements e.g. descriptor lists are aligned. */ + priv_mem = kmalloc(sizeof(*np) + PRIV_ALIGN, GFP_KERNEL); + /* Check for the very unlikely case of no memory. */ + if (priv_mem == NULL) + return NULL; /* We do a request_region() only to register /proc/ioports info. */ - request_region(ioaddr, YELLOWFIN_TOTAL_SIZE, card_name); + request_region(ioaddr, pci_id_tbl[chip_idx].io_size, dev->name); dev->base_addr = ioaddr; dev->irq = irq; - /* Make certain the descriptor lists are aligned. */ - yp = (void *)(((long)kmalloc(sizeof(*yp), GFP_KERNEL) + 31) & ~31); - memset(yp, 0, sizeof(*yp)); - dev->priv = yp; + dev->priv = np = (void *)(((long)priv_mem + PRIV_ALIGN) & ~PRIV_ALIGN); + memset(np, 0, sizeof(*np)); + np->priv_addr = priv_mem; -#ifdef MODULE - yp->next_module = root_yellowfin_dev; + np->next_module = root_yellowfin_dev; root_yellowfin_dev = dev; -#endif - yp->chip_id = chip_id; + np->pci_dev = pdev; + np->chip_id = chip_idx; + np->drv_flags = drv_flags; + np->msg_level = (1 << debug) - 1; + np->rx_copybreak = rx_copybreak; + np->max_interrupt_work = max_interrupt_work; + np->multicast_filter_limit = multicast_filter_limit; - yp->full_duplex = 1; -#ifdef YELLOWFIN_DEFAULT_MEDIA - yp->default_port = YELLOWFIN_DEFAULT_MEDIA; -#endif -#ifdef YELLOWFIN_NO_MEDIA_SWITCH - yp->medialock = 1; -#endif + if (dev->mem_start) + option = dev->mem_start; /* The lower four bits are the media type. */ - if (options > 0) { - yp->full_duplex = (options & 16) ? 1 : 0; - yp->default_port = options & 15; - if (yp->default_port) - yp->medialock = 1; + if (option > 0) { + if (option & 0x220) + np->full_duplex = 1; + np->default_port = option & 15; + if (np->default_port) + np->medialock = 1; } + if (find_cnt < MAX_UNITS && full_duplex[find_cnt] > 0) + np->full_duplex = 1; + + if (np->full_duplex) + np->duplex_lock = 1; /* The Yellowfin-specific entries in the device structure. */ dev->open = &yellowfin_open; @@ -500,48 +496,97 @@ static struct device *yellowfin_probe1(struct device *dev, int ioaddr, int irq, dev->stop = &yellowfin_close; dev->get_stats = &yellowfin_get_stats; dev->set_multicast_list = &set_rx_mode; - if (mtu) - dev->mtu = mtu; - - /* todo: Reset the xcvr interface and turn on heartbeat. */ + dev->do_ioctl = &mii_ioctl; + + if (np->drv_flags & HasMII) { + int phy, phy_idx = 0; + for (phy = 0; phy < 32 && phy_idx < 4; phy++) { + int mii_status = mdio_read(ioaddr, phy, 1); + if (mii_status != 0xffff && mii_status != 0x0000) { + np->phys[phy_idx++] = phy; + np->advertising = mdio_read(ioaddr, phy, 4); + printk(KERN_INFO "%s: MII PHY found at address %d, status " + "0x%4.4x advertising %4.4x.\n", + dev->name, phy, mii_status, np->advertising); + } + } + np->mii_cnt = phy_idx; + } return dev; } +static int read_eeprom(long ioaddr, int location) +{ + int bogus_cnt = 10000; /* Typical 33Mhz: 1050 ticks */ + + outb(location, ioaddr + EEAddr); + outb(0x30 | ((location >> 8) & 7), ioaddr + EECtrl); + while ((inb(ioaddr + EEStatus) & 0x80) && --bogus_cnt > 0) + ; + return inb(ioaddr + EERead); +} + +/* MII Managemen Data I/O accesses. + These routines assume the MDIO controller is idle, and do not exit until + the command is finished. */ + +static int mdio_read(long ioaddr, int phy_id, int location) +{ + int i; + + outw((phy_id<<8) + location, ioaddr + MII_Addr); + outw(1, ioaddr + MII_Cmd); + for (i = 10000; i >= 0; i--) + if ((inw(ioaddr + MII_Status) & 1) == 0) + break; + return inw(ioaddr + MII_Rd_Data); +} + +static void mdio_write(long ioaddr, int phy_id, int location, int value) +{ + int i; + + outw((phy_id<<8) + location, ioaddr + MII_Addr); + outw(value, ioaddr + MII_Wr_Data); + + /* Wait for the command to finish. */ + for (i = 10000; i >= 0; i--) + if ((inw(ioaddr + MII_Status) & 1) == 0) + break; + return; +} + -static int -yellowfin_open(struct device *dev) +static int yellowfin_open(struct net_device *dev) { struct yellowfin_private *yp = (struct yellowfin_private *)dev->priv; - int ioaddr = dev->base_addr; + long ioaddr = dev->base_addr; + int i; /* Reset the chip. */ outl(0x80000000, ioaddr + DMACtrl); -#ifdef SA_SHIRQ - if (request_irq(dev->irq, &yellowfin_interrupt, SA_SHIRQ, - card_name, dev)) { - return -EAGAIN; - } -#else - if (irq2dev_map[dev->irq] != NULL - || (irq2dev_map[dev->irq] = dev) == NULL - || dev->irq == 0 - || request_irq(dev->irq, &yellowfin_interrupt, 0, card_name)) { + MOD_INC_USE_COUNT; + + if (request_irq(dev->irq, &yellowfin_interrupt, SA_SHIRQ, dev->name, + dev)) { + MOD_DEC_USE_COUNT; return -EAGAIN; } -#endif - if (yellowfin_debug > 1) - printk("%s: yellowfin_open() irq %d.\n", dev->name, dev->irq); - - MOD_INC_USE_COUNT; + if (yp->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: yellowfin_open() irq %d.\n", + dev->name, dev->irq); yellowfin_init_ring(dev); outl(virt_to_bus(yp->rx_ring), ioaddr + RxPtr); outl(virt_to_bus(yp->tx_ring), ioaddr + TxPtr); + for (i = 0; i < 6; i++) + outb(dev->dev_addr[i], ioaddr + StnAddr + i); + /* Set up various condition 'select' registers. There are no options here. */ outl(0x00800080, ioaddr + TxIntrSel); /* Interrupt on Tx abort */ @@ -558,25 +603,27 @@ yellowfin_open(struct device *dev) /* Enable automatic generation of flow control frames, period 0xffff. */ outl(0x0030FFFF, ioaddr + FlowCtrl); + yp->tx_threshold = 32; + outl(yp->tx_threshold, ioaddr + TxThreshold); + if (dev->if_port == 0) dev->if_port = yp->default_port; - dev->tbusy = 0; - dev->interrupt = 0; yp->in_interrupt = 0; - /* We are always in full-duplex mode with the current chip! */ - yp->full_duplex = 1; - /* Setting the Rx mode will start the Rx process. */ - outw(0x01CD | (yp->full_duplex ? 2 : 0), ioaddr + Cnfg); -#ifdef NEW_MULTICAST + if (yp->drv_flags & IsGigabit) { + /* We are always in full-duplex mode with gigabit! */ + yp->full_duplex = 1; + outw(0x01CF, ioaddr + Cnfg); + } else { + outw(0x0018, ioaddr + FrameGap0); /* 0060/4060 for non-MII 10baseT */ + outw(0x1018, ioaddr + FrameGap1); + outw(0x101C | (yp->full_duplex ? 2 : 0), ioaddr + Cnfg); + } + yp->rx_mode = 0; set_rx_mode(dev); -#else - set_rx_mode(dev, 0, 0); -#endif - - dev->start = 1; + netif_start_tx_queue(dev); /* Enable interrupts by setting the interrupt mask. */ outw(0x81ff, ioaddr + IntrEnb); /* See enum intr_status_bits */ @@ -584,13 +631,13 @@ yellowfin_open(struct device *dev) outl(0x80008000, ioaddr + RxCtrl); /* Start Rx and Tx channels. */ outl(0x80008000, ioaddr + TxCtrl); - if (yellowfin_debug > 2) { - printk("%s: Done yellowfin_open().\n", + if (yp->msg_level & NETIF_MSG_IFUP) + printk(KERN_DEBUG "%s: Done yellowfin_open().\n", dev->name); - } + /* Set the timer to check for link beat. */ init_timer(&yp->timer); - yp->timer.expires = RUN_AT((24*HZ)/10); /* 2.4 sec. */ + yp->timer.expires = jiffies + 3*HZ; yp->timer.data = (unsigned long)dev; yp->timer.function = &yellowfin_timer; /* timer handler */ add_timer(&yp->timer); @@ -600,183 +647,240 @@ yellowfin_open(struct device *dev) static void yellowfin_timer(unsigned long data) { - struct device *dev = (struct device *)data; + struct net_device *dev = (struct net_device *)data; struct yellowfin_private *yp = (struct yellowfin_private *)dev->priv; - int ioaddr = dev->base_addr; - int next_tick = 0; + long ioaddr = dev->base_addr; + int next_tick = 60*HZ; - if (yellowfin_debug > 3) { - printk("%s: Yellowfin timer tick, status %8.8x.\n", - dev->name, inl(ioaddr + IntrStatus)); - } - if (next_tick) { - yp->timer.expires = RUN_AT(next_tick); - add_timer(&yp->timer); + if (yp->msg_level & NETIF_MSG_TIMER) + printk(KERN_DEBUG "%s: Yellowfin timer tick, status %8.8x.\n", + dev->name, inw(ioaddr + IntrStatus)); + + if (jiffies - dev->trans_start > TX_TIMEOUT + && yp->cur_tx - yp->dirty_tx > 1 + && netif_queue_paused(dev)) + yellowfin_tx_timeout(dev); + + if (yp->mii_cnt) { + int mii_reg1 = mdio_read(ioaddr, yp->phys[0], 1); + int mii_reg5 = mdio_read(ioaddr, yp->phys[0], 5); + int negotiated = mii_reg5 & yp->advertising; + if (yp->msg_level & NETIF_MSG_TIMER) + printk(KERN_DEBUG "%s: MII #%d status register is %4.4x, " + "link partner capability %4.4x.\n", + dev->name, yp->phys[0], mii_reg1, mii_reg5); + + if ( ! yp->duplex_lock && + ((negotiated & 0x0300) == 0x0100 + || (negotiated & 0x00C0) == 0x0040)) { + yp->full_duplex = 1; + } + outw(0x101C | (yp->full_duplex ? 2 : 0), ioaddr + Cnfg); + + if (mii_reg1 & 0x0004) + next_tick = 60*HZ; + else + next_tick = 3*HZ; } + + yp->timer.expires = jiffies + next_tick; + add_timer(&yp->timer); } -static void yellowfin_tx_timeout(struct device *dev) +static void yellowfin_tx_timeout(struct net_device *dev) { struct yellowfin_private *yp = (struct yellowfin_private *)dev->priv; - int ioaddr = dev->base_addr; + long ioaddr = dev->base_addr; - printk("%s: Yellowfin transmit timed out, status %8.8x, resetting...\n", - dev->name, inl(ioaddr)); + printk(KERN_WARNING "%s: Yellowfin transmit timed out at %d/%d Tx " + "status %4.4x, Rx status %4.4x, resetting...\n", + dev->name, yp->cur_tx, yp->dirty_tx, + (int)inl(ioaddr + TxStatus), (int)inl(ioaddr + RxStatus)); -#ifndef __alpha__ - { + /* Note: these should be KERN_DEBUG. */ + if (yp->msg_level & NETIF_MSG_TX_ERR) { int i; - printk(" Rx ring %8.8x: ", (int)yp->rx_ring); + printk(KERN_DEBUG " Rx ring %p: ", yp->rx_ring); for (i = 0; i < RX_RING_SIZE; i++) - printk(" %8.8x", (unsigned int)yp->rx_ring[i].status); - printk("\n Tx ring %8.8x: ", (int)yp->tx_ring); + printk(" %8.8x", yp->rx_ring[i].result_status); + printk("\n"KERN_DEBUG" Tx ring %p: ", yp->tx_ring); for (i = 0; i < TX_RING_SIZE; i++) - printk(" %4.4x /%4.4x", yp->tx_status[i].tx_errs, yp->tx_ring[i].status); + printk(" %4.4x /%8.8x", yp->tx_status[i].tx_errs, + yp->tx_ring[i].result_status); printk("\n"); } -#endif - /* Perhaps we should reinitialize the hardware here. */ - dev->if_port = 0; - /* Stop and restart the chip's Tx processes . */ + /* If the hardware is found to hang regularly, we will update the code + to reinitialize the chip here. */ + dev->if_port = 0; - /* Trigger an immediate transmit demand. */ + /* Wake the potentially-idle transmit channel. */ + outl(0x10001000, dev->base_addr + TxCtrl); + if (yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE) + netif_unpause_tx_queue(dev); - dev->trans_start = jiffies; - yp->stats.tx_errors++; - return; + dev->trans_start = jiffies; + yp->stats.tx_errors++; + return; } - /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ -static void -yellowfin_init_ring(struct device *dev) +static void yellowfin_init_ring(struct net_device *dev) { struct yellowfin_private *yp = (struct yellowfin_private *)dev->priv; int i; yp->tx_full = 0; yp->cur_rx = yp->cur_tx = 0; - yp->dirty_rx = yp->dirty_tx = 0; + yp->dirty_tx = 0; - for (i = 0; i < RX_RING_SIZE; i++) { - struct sk_buff *skb; - int pkt_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); + yp->rx_buf_sz = dev->mtu + 18 + 15; + /* Match other driver's allocation size when possible. */ + if (yp->rx_buf_sz < PKT_BUF_SZ) + yp->rx_buf_sz = PKT_BUF_SZ; + yp->rx_head_desc = &yp->rx_ring[0]; - yp->rx_ring[i].request_cnt = pkt_buf_sz; - yp->rx_ring[i].cmd = CMD_RX_BUF | INTR_ALWAYS; + for (i = 0; i < RX_RING_SIZE; i++) { + yp->rx_ring[i].dbdma_cmd = + cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | yp->rx_buf_sz); + yp->rx_ring[i].branch_addr = virt_to_le32desc(&yp->rx_ring[i+1]); + } + /* Mark the last entry as wrapping the ring. */ + yp->rx_ring[i-1].branch_addr = virt_to_le32desc(&yp->rx_ring[0]); - skb = DEV_ALLOC_SKB(pkt_buf_sz); - skb_reserve(skb, 2); /* 16 byte align the IP header. */ + for (i = 0; i < RX_RING_SIZE; i++) { + struct sk_buff *skb = dev_alloc_skb(yp->rx_buf_sz); yp->rx_skbuff[i] = skb; if (skb == NULL) - break; /* Bad news! */ + break; skb->dev = dev; /* Mark as being used by this device. */ -#if LINUX_VERSION_CODE > 0x10300 - yp->rx_ring[i].addr = virt_to_bus(skb->tail); -#else - yp->rx_ring[i].addr = virt_to_bus(skb->data); -#endif - yp->rx_ring[i].branch_addr = virt_to_bus(&yp->rx_ring[i+1]); + skb_reserve(skb, 2); /* 16 byte align the IP header. */ + yp->rx_ring[i].addr = virt_to_le32desc(skb->tail); } - /* Mark the last entry as wrapping the ring. */ - yp->rx_ring[i-1].cmd = CMD_RX_BUF | INTR_ALWAYS | BRANCH_ALWAYS; - yp->rx_ring[i-1].branch_addr = virt_to_bus(&yp->rx_ring[0]); + yp->rx_ring[i-1].dbdma_cmd = cpu_to_le32(CMD_STOP); + yp->dirty_rx = (unsigned int)(i - RX_RING_SIZE); -/*#define NO_TXSTATS*/ +#define NO_TXSTATS #ifdef NO_TXSTATS /* In this mode the Tx ring needs only a single descriptor. */ for (i = 0; i < TX_RING_SIZE; i++) { yp->tx_skbuff[i] = 0; - yp->tx_ring[i].cmd = CMD_STOP; - yp->tx_ring[i].branch_addr = virt_to_bus(&yp->tx_ring[i+1]); + yp->tx_ring[i].dbdma_cmd = cpu_to_le32(CMD_STOP); + yp->tx_ring[i].branch_addr = virt_to_le32desc(&yp->tx_ring[i+1]); } - yp->tx_ring[--i].cmd = CMD_STOP | BRANCH_ALWAYS; /* Wrap ring */ - yp->tx_ring[i].branch_addr = virt_to_bus(&yp->tx_ring[0]); + /* Wrap ring */ + yp->tx_ring[--i].dbdma_cmd = cpu_to_le32(CMD_STOP | BRANCH_ALWAYS); + yp->tx_ring[i].branch_addr = virt_to_le32desc(&yp->tx_ring[0]); #else /* Tx ring needs a pair of descriptors, the second for the status. */ for (i = 0; i < TX_RING_SIZE*2; i++) { yp->tx_skbuff[i/2] = 0; - yp->tx_ring[i].cmd = CMD_STOP; /* Branch on Tx error. */ - yp->tx_ring[i].branch_addr = virt_to_bus(&yp->tx_ring[i+1]); + /* Branch on Tx error. */ + yp->tx_ring[i].dbdma_cmd = cpu_to_le32(CMD_STOP); + yp->tx_ring[i].branch_addr = virt_to_le32desc(&yp->tx_ring[i+1]); i++; - yp->tx_ring[i].cmd = CMD_TXSTATUS; /* Interrupt, no wait. */ - yp->tx_ring[i].request_cnt = sizeof(yp->tx_status[i]); - yp->tx_ring[i].addr = virt_to_bus(&yp->tx_status[i/2]); - yp->tx_ring[i].branch_addr = virt_to_bus(&yp->tx_ring[i+1]); + if (yp->flags & FullTxStatus) { + yp->tx_ring[i].dbdma_cmd = + cpu_to_le32(CMD_TXSTATUS | sizeof(yp->tx_status[i])); + yp->tx_ring[i].request_cnt = sizeof(yp->tx_status[i]); + yp->tx_ring[i].addr = virt_to_le32desc(&yp->tx_status[i/2]); + } else { /* Symbios chips write only tx_errs word. */ + yp->tx_ring[i].dbdma_cmd = + cpu_to_le32(CMD_TXSTATUS | INTR_ALWAYS | 2); + yp->tx_ring[i].request_cnt = 2; + yp->tx_ring[i].addr = virt_to_le32desc(&yp->tx_status[i/2].tx_errs); + } + yp->tx_ring[i].branch_addr = virt_to_le32desc(&yp->tx_ring[i+1]); } /* Wrap ring */ - yp->tx_ring[--i].cmd = CMD_TXSTATUS | BRANCH_ALWAYS | INTR_ALWAYS; - yp->tx_ring[i].branch_addr = virt_to_bus(&yp->tx_ring[0]); + yp->tx_ring[--i].dbdma_cmd |= cpu_to_le32(BRANCH_ALWAYS | INTR_ALWAYS); + yp->tx_ring[i].branch_addr = virt_to_le32desc(&yp->tx_ring[0]); #endif + yp->tx_tail_desc = &yp->tx_status[0]; + return; } -static int -yellowfin_start_xmit(struct sk_buff *skb, struct device *dev) +static int yellowfin_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct yellowfin_private *yp = (struct yellowfin_private *)dev->priv; unsigned entry; +#if LINUX_VERSION_CODE < 0x20323 /* Block a timer-based transmit from overlapping. This could better be done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */ - if (test_and_set_bit(0, (void*)&dev->tbusy) != 0) { - if (jiffies - dev->trans_start < TX_TIMEOUT) - return 1; - yellowfin_tx_timeout(dev); + if (netif_pause_tx_queue(dev) != 0) { + /* This watchdog code is redundant with the media monitor timer. */ + if (jiffies - dev->trans_start > TX_TIMEOUT) + yellowfin_tx_timeout(dev); return 1; } +#endif - /* Caution: the write order is important here, set the base address - with the "ownership" bits last. */ + /* Note: Ordering is important here, set the field with the + "ownership" bit last, and only then increment cur_tx. */ /* Calculate the next Tx descriptor entry. */ entry = yp->cur_tx % TX_RING_SIZE; yp->tx_skbuff[entry] = skb; + if (gx_fix) { /* Note: only works for paddable protocols e.g. IP. */ + int cacheline_end = (virt_to_bus(skb->data) + skb->len) % 32; + /* Fix GX chipset errata. */ + if (cacheline_end > 24 || cacheline_end == 0) + skb->len += 32 - cacheline_end + 1; + } #ifdef NO_TXSTATS - yp->tx_ring[entry].request_cnt = skb->len; - yp->tx_ring[entry].addr = virt_to_bus(skb->data); - yp->tx_ring[entry].status = 0; + yp->tx_ring[entry].addr = virt_to_le32desc(skb->data); + yp->tx_ring[entry].result_status = 0; if (entry >= TX_RING_SIZE-1) { - yp->tx_ring[0].cmd = CMD_STOP; /* New stop command. */ - yp->tx_ring[TX_RING_SIZE-1].cmd = CMD_TX_PKT | BRANCH_ALWAYS; + /* New stop command. */ + yp->tx_ring[0].dbdma_cmd = cpu_to_le32(CMD_STOP); + yp->tx_ring[TX_RING_SIZE-1].dbdma_cmd = + cpu_to_le32(CMD_TX_PKT|BRANCH_ALWAYS | skb->len); } else { - yp->tx_ring[entry+1].cmd = CMD_STOP; /* New stop command. */ - yp->tx_ring[entry].cmd = CMD_TX_PKT | BRANCH_IFTRUE; + yp->tx_ring[entry+1].dbdma_cmd = cpu_to_le32(CMD_STOP); + yp->tx_ring[entry].dbdma_cmd = + cpu_to_le32(CMD_TX_PKT | BRANCH_IFTRUE | skb->len); } yp->cur_tx++; #else yp->tx_ring[entry<<1].request_cnt = skb->len; - yp->tx_ring[entry<<1].addr = virt_to_bus(skb->data); + yp->tx_ring[entry<<1].addr = virt_to_le32desc(skb->data); /* The input_last (status-write) command is constant, but we must rewrite the subsequent 'stop' command. */ yp->cur_tx++; { unsigned next_entry = yp->cur_tx % TX_RING_SIZE; - yp->tx_ring[next_entry<<1].cmd = CMD_STOP; + yp->tx_ring[next_entry<<1].dbdma_cmd = cpu_to_le32(CMD_STOP); } /* Final step -- overwrite the old 'stop' command. */ - yp->tx_ring[entry<<1].cmd = - (entry % 6) == 0 ? CMD_TX_PKT | INTR_ALWAYS | BRANCH_IFTRUE : - CMD_TX_PKT | BRANCH_IFTRUE; + yp->tx_ring[entry<<1].dbdma_cmd = + cpu_to_le32( ((entry % 6) == 0 ? CMD_TX_PKT|INTR_ALWAYS|BRANCH_IFTRUE : + CMD_TX_PKT | BRANCH_IFTRUE) | skb->len); #endif - /* Todo: explicitly flush cache lines here. */ + /* Non-x86 Todo: explicitly flush cache lines here. */ /* Wake the potentially-idle transmit channel. */ outl(0x10001000, dev->base_addr + TxCtrl); - if (yp->cur_tx - yp->dirty_tx < TX_RING_SIZE - 1) - clear_bit(0, (void*)&dev->tbusy); /* Typical path */ - else + if (yp->cur_tx - yp->dirty_tx >= TX_QUEUE_SIZE) { + netif_stop_tx_queue(dev); yp->tx_full = 1; + if (yp->cur_tx - (volatile int)yp->dirty_tx < TX_QUEUE_SIZE) { + netif_unpause_tx_queue(dev); + yp->tx_full = 0; + } else + netif_stop_tx_queue(dev); + } else + netif_unpause_tx_queue(dev); /* Typical path */ dev->trans_start = jiffies; - if (yellowfin_debug > 4) { - printk("%s: Yellowfin transmit frame #%d queued in slot %d.\n", + if (yp->msg_level & NETIF_MSG_TX_QUEUED) { + printk(KERN_DEBUG "%s: Yellowfin transmit frame #%d queued in slot %d.\n", dev->name, yp->cur_tx, entry); } return 0; @@ -784,316 +888,331 @@ yellowfin_start_xmit(struct sk_buff *skb, struct device *dev) /* The interrupt handler does all of the Rx thread work and cleans up after the Tx thread. */ -static void yellowfin_interrupt IRQ(int irq, void *dev_instance, struct pt_regs *regs) +static void yellowfin_interrupt(int irq, void *dev_instance, struct pt_regs *regs) { -#ifdef SA_SHIRQ /* Use the now-standard shared IRQ implementation. */ - struct device *dev = (struct device *)dev_instance; -#else - struct device *dev = (struct device *)(irq2dev_map[irq]); -#endif - - struct yellowfin_private *lp; - int ioaddr, boguscnt = max_interrupt_work; + struct net_device *dev = (struct net_device *)dev_instance; + struct yellowfin_private *yp; + long ioaddr; + int boguscnt = max_interrupt_work; +#ifndef final_version /* Can never occur. */ if (dev == NULL) { - printk ("yellowfin_interrupt(): irq %d for unknown device.\n", irq); + printk (KERN_ERR "yellowfin_interrupt(): irq %d for unknown device.\n", irq); return; } +#endif ioaddr = dev->base_addr; - lp = (struct yellowfin_private *)dev->priv; - if (test_and_set_bit(0, (void*)&lp->in_interrupt)) { - dev->interrupt = 1; + yp = (struct yellowfin_private *)dev->priv; + if (test_and_set_bit(0, (void*)&yp->in_interrupt)) { printk(KERN_ERR "%s: Re-entering the interrupt handler.\n", dev->name); return; } do { u16 intr_status = inw(ioaddr + IntrClear); - unsigned dirty_tx = lp->dirty_tx; - if (yellowfin_debug > 4) - printk("%s: Yellowfin interrupt, status %4.4x.\n", + if (yp->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Yellowfin interrupt, status %4.4x.\n", dev->name, intr_status); if (intr_status == 0) break; - if (intr_status & (IntrRxDone | IntrEarlyRx)) + if (intr_status & (IntrRxDone | IntrEarlyRx)) { yellowfin_rx(dev); + outl(0x10001000, ioaddr + RxCtrl); /* Wake Rx engine. */ + } #ifdef NO_TXSTATS - for (; lp->cur_tx - dirty_tx > 0; dirty_tx++) { - int entry = dirty_tx % TX_RING_SIZE; - if (lp->tx_ring[entry].status == 0) + for (; yp->cur_tx - yp->dirty_tx > 0; yp->dirty_tx++) { + int entry = yp->dirty_tx % TX_RING_SIZE; + if (yp->tx_ring[entry].result_status == 0) break; + yp->stats.tx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + yp->stats.tx_bytes += yp->tx_skbuff[entry]->len; +#endif /* Free the original skb. */ - dev_kfree_skb(lp->tx_skbuff[entry], FREE_WRITE); - lp->tx_skbuff[entry] = 0; - lp->stats.tx_packets++; + dev_free_skb_irq(yp->tx_skbuff[entry]); + yp->tx_skbuff[entry] = 0; } - if (lp->tx_full && dev->tbusy - && lp->cur_tx - dirty_tx < TX_RING_SIZE - 4) { + if (yp->tx_full + && yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE - 4) { /* The ring is no longer full, clear tbusy. */ - lp->tx_full = 0; - clear_bit(0, (void*)&dev->tbusy); - mark_bh(NET_BH); + yp->tx_full = 0; + netif_resume_tx_queue(dev); } - lp->dirty_tx = dirty_tx; #else if (intr_status & IntrTxDone - || lp->tx_status[dirty_tx % TX_RING_SIZE].tx_errs) { + || yp->tx_tail_desc->tx_errs) { + unsigned dirty_tx = yp->dirty_tx; - for (dirty_tx = lp->dirty_tx; lp->cur_tx - dirty_tx > 0; + for (dirty_tx = yp->dirty_tx; yp->cur_tx - dirty_tx > 0; dirty_tx++) { /* Todo: optimize this. */ int entry = dirty_tx % TX_RING_SIZE; - u16 tx_errs = lp->tx_status[entry].tx_errs; + u16 tx_errs = yp->tx_status[entry].tx_errs; +#ifndef final_version + if (yp->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: Tx queue %d check, Tx status " + "%4.4x %4.4x %4.4x %4.4x.\n", + dev->name, entry, + yp->tx_status[entry].tx_cnt, + yp->tx_status[entry].tx_errs, + yp->tx_status[entry].total_tx_cnt, + yp->tx_status[entry].paused); +#endif if (tx_errs == 0) break; /* It still hasn't been Txed */ - if (tx_errs & 0xF8100000) { + if (tx_errs & 0xF810) { /* There was an major error, log it. */ #ifndef final_version - if (yellowfin_debug > 1) - printk("%s: Transmit error, Tx status %4.4x.\n", + if (yp->msg_level & NETIF_MSG_TX_ERR) + printk(KERN_DEBUG "%s: Transmit error, Tx status %4.4x.\n", dev->name, tx_errs); #endif - lp->stats.tx_errors++; - if (tx_errs & 0xF800) lp->stats.tx_aborted_errors++; - if (tx_errs & 0x0800) lp->stats.tx_carrier_errors++; - if (tx_errs & 0x2000) lp->stats.tx_window_errors++; - if (tx_errs & 0x8000) lp->stats.tx_fifo_errors++; + yp->stats.tx_errors++; + if (tx_errs & 0xF800) yp->stats.tx_aborted_errors++; + if (tx_errs & 0x0800) yp->stats.tx_carrier_errors++; + if (tx_errs & 0x2000) yp->stats.tx_window_errors++; + if (tx_errs & 0x8000) yp->stats.tx_fifo_errors++; #ifdef ETHER_STATS - if (tx_errs & 0x1000) lp->stats.collisions16++; + if (tx_errs & 0x1000) yp->stats.collisions16++; #endif } else { +#ifndef final_version + if (yp->msg_level & NETIF_MSG_TX_DONE) + printk(KERN_DEBUG "%s: Normal transmit, Tx status %4.4x.\n", + dev->name, tx_errs); +#endif #ifdef ETHER_STATS - if (status & 0x0400) lp->stats.tx_deferred++; + if (tx_errs & 0x0400) yp->stats.tx_deferred++; +#endif +#if LINUX_VERSION_CODE > 0x20127 + yp->stats.tx_bytes += yp->tx_skbuff[entry]->len; #endif - lp->stats.collisions += tx_errs & 15; - lp->stats.tx_packets++; + yp->stats.collisions += tx_errs & 15; + yp->stats.tx_packets++; } - /* Free the original skb. */ - dev_kfree_skb(lp->tx_skbuff[entry], FREE_WRITE); - lp->tx_skbuff[entry] = 0; + dev_free_skb_irq(yp->tx_skbuff[entry]); + yp->tx_skbuff[entry] = 0; /* Mark status as empty. */ - lp->tx_status[entry].tx_errs = 0; + yp->tx_status[entry].tx_errs = 0; } #ifndef final_version - if (lp->cur_tx - dirty_tx > TX_RING_SIZE) { - printk("%s: Out-of-sync dirty pointer, %d vs. %d, full=%d.\n", - dev->name, dirty_tx, lp->cur_tx, lp->tx_full); + if (yp->cur_tx - dirty_tx > TX_RING_SIZE) { + printk(KERN_ERR "%s: Out-of-sync dirty pointer, %d vs. %d, full=%d.\n", + dev->name, dirty_tx, yp->cur_tx, yp->tx_full); dirty_tx += TX_RING_SIZE; } #endif - if (lp->tx_full && dev->tbusy - && lp->cur_tx - dirty_tx < TX_RING_SIZE - 2) { + if (yp->tx_full + && yp->cur_tx - dirty_tx < TX_QUEUE_SIZE - 2) { /* The ring is no longer full, clear tbusy. */ - lp->tx_full = 0; - clear_bit(0, (void*)&dev->tbusy); - mark_bh(NET_BH); + yp->tx_full = 0; + netif_resume_tx_queue(dev); } - lp->dirty_tx = dirty_tx; + yp->dirty_tx = dirty_tx; + yp->tx_tail_desc = &yp->tx_status[dirty_tx % TX_RING_SIZE]; } #endif - /* Log errors and other events. */ - if (intr_status & 0x2ee) { /* Abnormal error summary. */ - printk("%s: Something Wicked happened! %4.4x.\n", - dev->name, intr_status); - /* Hmmmmm, it's not clear what to do here. */ - if (intr_status & (IntrTxPCIErr | IntrTxPCIFault)) - lp->stats.tx_errors++; - if (intr_status & (IntrRxPCIErr | IntrRxPCIFault)) - lp->stats.rx_errors++; - } + /* Log errors and other uncommon events. */ + if (intr_status & 0x2ee) /* Abnormal error summary. */ + yellowfin_error(dev, intr_status); + if (--boguscnt < 0) { - printk("%s: Too much work at interrupt, status=0x%4.4x.\n", + printk(KERN_WARNING "%s: Too much work at interrupt, " + "status=0x%4.4x.\n", dev->name, intr_status); break; } } while (1); - if (yellowfin_debug > 3) - printk("%s: exiting interrupt, status=%#4.4x.\n", + if (yp->msg_level & NETIF_MSG_INTR) + printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", dev->name, inw(ioaddr + IntrStatus)); - /* Code that should never be run! Perhaps remove after testing.. */ - { - static int stopit = 10; - if (dev->start == 0 && --stopit < 0) { - printk("%s: Emergency stop, looping startup interrupt.\n", - dev->name); -#ifdef SA_SHIRQ - free_irq(irq, dev); -#else - free_irq(irq); -#endif - } - } - - dev->interrupt = 0; - clear_bit(0, (void*)&lp->in_interrupt); + clear_bit(0, (void*)&yp->in_interrupt); return; } /* This routine is logically part of the interrupt handler, but separated for clarity and better register allocation. */ -static int -yellowfin_rx(struct device *dev) +static int yellowfin_rx(struct net_device *dev) { - struct yellowfin_private *lp = (struct yellowfin_private *)dev->priv; struct yellowfin_private *yp = (struct yellowfin_private *)dev->priv; - int entry = lp->cur_rx % RX_RING_SIZE; - int boguscnt = 20; - - if (yellowfin_debug > 4) { - printk(" In yellowfin_rx(), entry %d status %4.4x.\n", entry, - yp->rx_ring[entry].status); - printk(" #%d desc. %4.4x %4.4x %8.8x %4.4x %4.4x.\n", - entry, yp->rx_ring[entry].cmd, - yp->rx_ring[entry].request_cnt, yp->rx_ring[entry].addr, - yp->rx_ring[entry].result_cnt, yp->rx_ring[entry].status); + int entry = yp->cur_rx % RX_RING_SIZE; + int boguscnt = yp->dirty_rx + RX_RING_SIZE - yp->cur_rx; + + if (yp->msg_level & NETIF_MSG_RX_STATUS) { + printk(KERN_DEBUG " In yellowfin_rx(), entry %d status %8.8x.\n", + entry, yp->rx_ring[entry].result_status); + printk(KERN_DEBUG " #%d desc. %8.8x %8.8x %8.8x.\n", + entry, yp->rx_ring[entry].dbdma_cmd, yp->rx_ring[entry].addr, + yp->rx_ring[entry].result_status); } - /* If EOP is set on the next entry, it's a new packet. Send it up. */ - while (yp->rx_ring[entry].status) { - /* Todo: optimize this mess. */ - u16 desc_status = yp->rx_ring[entry].status; - struct yellowfin_desc *desc = &lp->rx_ring[entry]; - int frm_size = desc->request_cnt - desc->result_cnt; - u8 *buf_addr = bus_to_virt(lp->rx_ring[entry].addr); - s16 frame_status = *(s16*)&(buf_addr[frm_size - 2]); - - if (yellowfin_debug > 4) - printk(" yellowfin_rx() status was %4.4x.\n", frame_status); + while (yp->rx_head_desc->result_status) { + struct yellowfin_desc *desc = yp->rx_head_desc; + u16 desc_status = le32_to_cpu(desc->result_status) >> 16; + int data_size = + (le32_to_cpu(desc->dbdma_cmd) - le32_to_cpu(desc->result_status)) + & 0xffff; + u8 *buf_addr = le32desc_to_virt(desc->addr); + s16 frame_status = get_unaligned((s16*)&(buf_addr[data_size - 2])); + + if (yp->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " yellowfin_rx() status was %4.4x.\n", + frame_status); if (--boguscnt < 0) break; if ( ! (desc_status & RX_EOP)) { - printk("%s: Oversized Ethernet frame spanned multiple buffers," + printk(KERN_WARNING "%s: Oversized Ethernet frame spanned multiple buffers," " status %4.4x!\n", dev->name, desc_status); - lp->stats.rx_length_errors++; - } else if (frame_status & 0x0038) { + yp->stats.rx_length_errors++; + } else if ((yp->drv_flags & IsGigabit) && (frame_status & 0x0038)) { /* There was a error. */ - if (yellowfin_debug > 3) - printk(" yellowfin_rx() Rx error was %4.4x.\n", frame_status); - lp->stats.rx_errors++; - if (frame_status & 0x0060) lp->stats.rx_length_errors++; - if (frame_status & 0x0008) lp->stats.rx_frame_errors++; - if (frame_status & 0x0010) lp->stats.rx_crc_errors++; - if (frame_status < 0) lp->stats.rx_dropped++; + if (yp->msg_level & NETIF_MSG_RX_ERR) + printk(KERN_DEBUG " yellowfin_rx() Rx error was %4.4x.\n", + frame_status); + yp->stats.rx_errors++; + if (frame_status & 0x0060) yp->stats.rx_length_errors++; + if (frame_status & 0x0008) yp->stats.rx_frame_errors++; + if (frame_status & 0x0010) yp->stats.rx_crc_errors++; + if (frame_status < 0) yp->stats.rx_dropped++; + } else if ( !(yp->drv_flags & IsGigabit) && + ((buf_addr[data_size-1] & 0x85) || buf_addr[data_size-2] & 0xC0)) { + u8 status1 = buf_addr[data_size-2]; + u8 status2 = buf_addr[data_size-1]; + yp->stats.rx_errors++; + if (status1 & 0xC0) yp->stats.rx_length_errors++; + if (status2 & 0x03) yp->stats.rx_frame_errors++; + if (status2 & 0x04) yp->stats.rx_crc_errors++; + if (status2 & 0x80) yp->stats.rx_dropped++; #ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ - } else if (memcmp(bus_to_virt(lp->rx_ring[entry].addr), + } else if ((yp->flags & HasMACAddrBug) && + memcmp(le32desc_to_virt(yp->rx_ring[entry].addr), dev->dev_addr, 6) != 0 - && memcmp(bus_to_virt(lp->rx_ring[entry].addr), + && memcmp(le32desc_to_virt(yp->rx_ring[entry].addr), "\377\377\377\377\377\377", 6) != 0) { - printk("%s: Bad frame to %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x.\n", - dev->name, - ((char *)bus_to_virt(lp->rx_ring[entry].addr))[0], - ((char *)bus_to_virt(lp->rx_ring[entry].addr))[1], - ((char *)bus_to_virt(lp->rx_ring[entry].addr))[2], - ((char *)bus_to_virt(lp->rx_ring[entry].addr))[3], - ((char *)bus_to_virt(lp->rx_ring[entry].addr))[4], - ((char *)bus_to_virt(lp->rx_ring[entry].addr))[5]); - bogus_rx++; + if (bogus_rx++ == 0) + printk(KERN_WARNING "%s: Bad frame to %2.2x:%2.2x:%2.2x:%2.2x:" + "%2.2x:%2.2x.\n", + dev->name, buf_addr[0], buf_addr[1], buf_addr[2], + buf_addr[3], buf_addr[4], buf_addr[5]); #endif } else { - u8 bogus_cnt = buf_addr[frm_size - 8]; - int pkt_len = frm_size - 8 - bogus_cnt; struct sk_buff *skb; - int rx_in_place = 0; - - /* Check if the packet is long enough to just accept without - copying to a properly sized skbuff. */ - if (pkt_len > rx_copybreak) { - struct sk_buff *newskb; - char *temp; - - /* Get a fresh skbuff to replace the filled one. */ - newskb = DEV_ALLOC_SKB(dev->mtu <= 1500 ? PKT_BUF_SZ - : dev->mtu + 32); - if (newskb == NULL) { - skb = 0; /* No memory, drop the packet. */ - goto memory_squeeze; - } - /* Pass up the skb already on the Rx ring. */ - skb = lp->rx_skbuff[entry]; - temp = skb_put(skb, pkt_len); - if (bus_to_virt(lp->rx_ring[entry].addr) != temp) - printk("%s: Warning -- the skbuff addresses do not match" - " in yellowfin_rx: %p vs. %p / %p.\n", dev->name, - bus_to_virt(lp->rx_ring[entry].addr), + int pkt_len = data_size - + (yp->chip_id ? 7 : 8 + buf_addr[data_size - 8]); + /* To verify: Yellowfin Length should omit the CRC! */ + +#ifndef final_version + if (yp->msg_level & NETIF_MSG_RX_STATUS) + printk(KERN_DEBUG " yellowfin_rx() normal Rx pkt length %d" + " of %d, bogus_cnt %d.\n", + pkt_len, data_size, boguscnt); +#endif + /* Check if the packet is long enough to just pass up the skbuff + without copying to a properly sized skbuff. */ + if (pkt_len > yp->rx_copybreak) { + char *temp = skb_put(skb = yp->rx_skbuff[entry], pkt_len); + yp->rx_skbuff[entry] = NULL; +#ifndef final_version /* Remove after testing. */ + if (le32desc_to_virt(yp->rx_ring[entry].addr) != temp) + printk(KERN_ERR "%s: Internal fault: The skbuff addresses " + "do not match in yellowfin_rx: %p vs. %p / %p.\n", + dev->name, + le32desc_to_virt(yp->rx_ring[entry].addr), skb->head, temp); - rx_in_place = 1; - lp->rx_skbuff[entry] = newskb; - newskb->dev = dev; - skb_reserve(newskb, 2); /* 16 byte align IP header */ - lp->rx_ring[entry].addr = virt_to_bus(newskb->tail); - } else - skb = DEV_ALLOC_SKB(pkt_len + 2); - memory_squeeze: - if (skb == NULL) { - printk("%s: Memory squeeze, deferring packet.\n", dev->name); - /* todo: Check that at least two ring entries are free. - If not, free one and mark stats->rx_dropped++. */ - break; - } - skb->dev = dev; - if (! rx_in_place) { - skb_reserve(skb, 2); /* 16 byte align the data fields */ - memcpy(skb_put(skb, pkt_len), - bus_to_virt(lp->rx_ring[entry].addr), pkt_len); - } -#if LINUX_VERSION_CODE > 0x10300 - skb->protocol = eth_type_trans(skb, dev); +#endif + } else { + skb = dev_alloc_skb(pkt_len + 2); + if (skb == NULL) + break; + skb->dev = dev; + skb_reserve(skb, 2); /* 16 byte align the IP header */ +#if HAS_IP_COPYSUM + eth_copy_and_sum(skb, yp->rx_skbuff[entry]->tail, pkt_len, 0); + skb_put(skb, pkt_len); #else - skb->len = pkt_len; + memcpy(skb_put(skb, pkt_len), yp->rx_skbuff[entry]->tail, + pkt_len); #endif + } + skb->protocol = eth_type_trans(skb, dev); netif_rx(skb); - lp->stats.rx_packets++; + dev->last_rx = jiffies; + yp->stats.rx_packets++; +#if LINUX_VERSION_CODE > 0x20127 + yp->stats.rx_bytes += pkt_len; +#endif } + entry = (++yp->cur_rx) % RX_RING_SIZE; + yp->rx_head_desc = &yp->rx_ring[entry]; + } - /* Mark this entry as being the end-of-list, and the prior entry - as now valid. */ - lp->rx_ring[entry].cmd = CMD_STOP; - yp->rx_ring[entry].status = 0; - { - int prev_entry = entry - 1; - if (prev_entry < 0) - lp->rx_ring[RX_RING_SIZE - 1].cmd = - CMD_RX_BUF | INTR_ALWAYS | BRANCH_ALWAYS; - else - lp->rx_ring[prev_entry].cmd = CMD_RX_BUF | INTR_ALWAYS; + /* Refill the Rx ring buffers. */ + for (; yp->cur_rx - yp->dirty_rx > 0; yp->dirty_rx++) { + entry = yp->dirty_rx % RX_RING_SIZE; + if (yp->rx_skbuff[entry] == NULL) { + struct sk_buff *skb = dev_alloc_skb(yp->rx_buf_sz); + yp->rx_skbuff[entry] = skb; + if (skb == NULL) + break; /* Better luck next round. */ + skb->dev = dev; /* Mark as being used by this device. */ + skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ + yp->rx_ring[entry].addr = virt_to_le32desc(skb->tail); } - entry = (++lp->cur_rx) % RX_RING_SIZE; + yp->rx_ring[entry].dbdma_cmd = cpu_to_le32(CMD_STOP); + yp->rx_ring[entry].result_status = 0; /* Clear complete bit. */ + if (entry != 0) + yp->rx_ring[entry - 1].dbdma_cmd = + cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | yp->rx_buf_sz); + else + yp->rx_ring[RX_RING_SIZE - 1].dbdma_cmd = + cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | BRANCH_ALWAYS + | yp->rx_buf_sz); } - /* todo: restart Rx engine if stopped. For now we just make the Rx ring - large enough to avoid this. */ return 0; } -static int -yellowfin_close(struct device *dev) +static void yellowfin_error(struct net_device *dev, int intr_status) { - int ioaddr = dev->base_addr; + struct yellowfin_private *yp = (struct yellowfin_private *)dev->priv; + + printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n", + dev->name, intr_status); + /* Hmmmmm, it's not clear what to do here. */ + if (intr_status & (IntrTxPCIErr | IntrTxPCIFault)) + yp->stats.tx_errors++; + if (intr_status & (IntrRxPCIErr | IntrRxPCIFault)) + yp->stats.rx_errors++; +} + +static int yellowfin_close(struct net_device *dev) +{ + long ioaddr = dev->base_addr; struct yellowfin_private *yp = (struct yellowfin_private *)dev->priv; int i; - dev->start = 0; - dev->tbusy = 1; + netif_stop_tx_queue(dev); - if (yellowfin_debug > 1) { - printk("%s: Shutting down ethercard, status was Tx %4.4x Rx %4.4x Int %2.2x.\n", + if (yp->msg_level & NETIF_MSG_IFDOWN) { + printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %4.4x " + "Rx %4.4x Int %2.2x.\n", dev->name, inw(ioaddr + TxStatus), - inw(ioaddr + RxStatus), inl(ioaddr + IntrStatus)); - printk("%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", + inw(ioaddr + RxStatus), inw(ioaddr + IntrStatus)); + printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", dev->name, yp->cur_tx, yp->dirty_tx, yp->cur_rx, yp->dirty_rx); } @@ -1106,34 +1225,34 @@ yellowfin_close(struct device *dev) del_timer(&yp->timer); -#ifdef __i386__ - if (yellowfin_debug > 2) { - printk("\n Tx ring at %8.8x:\n", (int)virt_to_bus(yp->tx_ring)); +#if defined(__i386__) + if (yp->msg_level & NETIF_MSG_IFDOWN) { + printk("\n"KERN_DEBUG" Tx ring at %8.8x:\n", + (int)virt_to_bus(yp->tx_ring)); for (i = 0; i < TX_RING_SIZE*2; i++) - printk(" %c #%d desc. %4.4x %4.4x %8.8x %8.8x %4.4x %4.4x.\n", + printk(" %c #%d desc. %8.8x %8.8x %8.8x %8.8x.\n", inl(ioaddr + TxPtr) == (long)&yp->tx_ring[i] ? '>' : ' ', - i, yp->tx_ring[i].cmd, - yp->tx_ring[i].request_cnt, yp->tx_ring[i].addr, - yp->tx_ring[i].branch_addr, - yp->tx_ring[i].result_cnt, yp->tx_ring[i].status); - printk(" Tx status %p:\n", yp->tx_status); + i, yp->tx_ring[i].dbdma_cmd, yp->tx_ring[i].addr, + yp->tx_ring[i].branch_addr, yp->tx_ring[i].result_status); + printk(KERN_DEBUG " Tx status %p:\n", yp->tx_status); for (i = 0; i < TX_RING_SIZE; i++) - printk(" #%d status %4.4x %4.4x %4.4x %4.4x.\n", + printk(KERN_DEBUG " #%d status %4.4x %4.4x %4.4x %4.4x.\n", i, yp->tx_status[i].tx_cnt, yp->tx_status[i].tx_errs, yp->tx_status[i].total_tx_cnt, yp->tx_status[i].paused); - printk("\n Rx ring %8.8x:\n", (int)virt_to_bus(yp->rx_ring)); + printk("\n"KERN_DEBUG " Rx ring %8.8x:\n", + (int)virt_to_bus(yp->rx_ring)); for (i = 0; i < RX_RING_SIZE; i++) { - printk(" %c #%d desc. %4.4x %4.4x %8.8x %4.4x %4.4x\n", + printk(KERN_DEBUG " %c #%d desc. %8.8x %8.8x %8.8x\n", inl(ioaddr + RxPtr) == (long)&yp->rx_ring[i] ? '>' : ' ', - i, yp->rx_ring[i].cmd, - yp->rx_ring[i].request_cnt, yp->rx_ring[i].addr, - yp->rx_ring[i].result_cnt, yp->rx_ring[i].status); - if (yellowfin_debug > 5) { - if (*(u8*)yp->rx_ring[i].addr != 0x69) { + i, yp->rx_ring[i].dbdma_cmd, yp->rx_ring[i].addr, + yp->rx_ring[i].result_status); + if (yp->msg_level & NETIF_MSG_PKTDATA) { + if (get_unaligned((u8*)yp->rx_ring[i].addr) != 0x69) { int j; for (j = 0; j < 0x50; j++) - printk(" %4.4x", ((u16*)yp->rx_ring[i].addr)[j]); + printk(" %4.4x", + get_unaligned(((u16*)yp->rx_ring[i].addr) + j)); printk("\n"); } } @@ -1141,34 +1260,29 @@ yellowfin_close(struct device *dev) } #endif /* __i386__ debugging only */ -#ifdef SA_SHIRQ free_irq(dev->irq, dev); -#else - free_irq(dev->irq); - irq2dev_map[dev->irq] = 0; -#endif /* Free all the skbuffs in the Rx queue. */ for (i = 0; i < RX_RING_SIZE; i++) { - yp->rx_ring[i].cmd = CMD_STOP; + yp->rx_ring[i].dbdma_cmd = cpu_to_le32(CMD_STOP); yp->rx_ring[i].addr = 0xBADF00D0; /* An invalid address. */ if (yp->rx_skbuff[i]) { #if LINUX_VERSION_CODE < 0x20100 yp->rx_skbuff[i]->free = 1; #endif - dev_kfree_skb(yp->rx_skbuff[i], FREE_WRITE); + dev_free_skb(yp->rx_skbuff[i]); } yp->rx_skbuff[i] = 0; } for (i = 0; i < TX_RING_SIZE; i++) { if (yp->tx_skbuff[i]) - dev_kfree_skb(yp->tx_skbuff[i], FREE_WRITE); + dev_free_skb(yp->tx_skbuff[i]); yp->tx_skbuff[i] = 0; } #ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ - if (yellowfin_debug > 0) { - printk("%s: Received %d frames that we should not have.\n", + if (yp->msg_level & NETIF_MSG_IFDOWN) { + printk(KERN_DEBUG "%s: Received %d frames that we should not have.\n", dev->name, bogus_rx); } #endif @@ -1177,8 +1291,7 @@ yellowfin_close(struct device *dev) return 0; } -static struct enet_statistics * -yellowfin_get_stats(struct device *dev) +static struct net_device_stats *yellowfin_get_stats(struct net_device *dev) { struct yellowfin_private *yp = (struct yellowfin_private *)dev->priv; return &yp->stats; @@ -1190,6 +1303,7 @@ yellowfin_get_stats(struct device *dev) N.B. Do not use for bulk data, use a table-based routine instead. This is common code and should be moved to net/core/crc.c */ static unsigned const ethernet_polynomial_le = 0xedb88320U; + static inline unsigned ether_crc_le(int length, unsigned char *data) { unsigned int crc = 0xffffffff; /* Initial value. */ @@ -1208,82 +1322,147 @@ static inline unsigned ether_crc_le(int length, unsigned char *data) } -#ifdef NEW_MULTICAST -static void set_rx_mode(struct device *dev) -#else -static void set_rx_mode(struct device *dev, int num_addrs, void *addrs); -#endif +static void set_rx_mode(struct net_device *dev) { - int ioaddr = dev->base_addr; - u16 cfg_value = inw(ioaddr + Cnfg); + struct yellowfin_private *yp = (struct yellowfin_private *)dev->priv; + u16 hash_table[4] = {0, 0, 0, 0}; + int mc_change = 0; + int new_rx_mode, i; - /* Stop the Rx process to change any value. */ - outw(cfg_value & ~0x1000, ioaddr + Cnfg); if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ /* Unconditionally log net taps. */ - printk("%s: Promiscuous mode enabled.\n", dev->name); - outw(0x000F, ioaddr + AddrMode); - } else if ((dev->mc_count > 64) || (dev->flags & IFF_ALLMULTI)) { + printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); + new_rx_mode = 0x000F; + } else if (dev->mc_count > yp->multicast_filter_limit + || (dev->flags & IFF_ALLMULTI)) { /* Too many to filter well, or accept all multicasts. */ - outw(0x000B, ioaddr + AddrMode); + new_rx_mode = 0x000B; } else if (dev->mc_count > 0) { /* Must use the multicast hash table. */ struct dev_mc_list *mclist; - u16 hash_table[4]; - int i; - memset(hash_table, 0, sizeof(hash_table)); + for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) { /* Due to a bug in the early chip versions, multiple filter slots must be set for each address. */ - set_bit((ether_crc_le(3, mclist->dmi_addr) >> 3) & 0x3f, - hash_table); - set_bit((ether_crc_le(4, mclist->dmi_addr) >> 3) & 0x3f, - hash_table); - set_bit((ether_crc_le(5, mclist->dmi_addr) >> 3) & 0x3f, - hash_table); + if (yp->drv_flags & HasMulticastBug) { + set_bit((ether_crc_le(3, mclist->dmi_addr) >> 3) & 0x3f, + hash_table); + set_bit((ether_crc_le(4, mclist->dmi_addr) >> 3) & 0x3f, + hash_table); + set_bit((ether_crc_le(5, mclist->dmi_addr) >> 3) & 0x3f, + hash_table); + } set_bit((ether_crc_le(6, mclist->dmi_addr) >> 3) & 0x3f, hash_table); } + if (memcmp(hash_table, yp->mc_filter, sizeof hash_table) != 0) + mc_change = 1; + new_rx_mode = 0x0003; + } else { /* Normal, unicast/broadcast-only mode. */ + new_rx_mode = 0x0001; + } + + /* Stop the Rx process to change any value. */ + if (yp->rx_mode != new_rx_mode || mc_change) { + long ioaddr = dev->base_addr; + u16 cfg_value = inw(ioaddr + Cnfg); + + outw(cfg_value & ~0x1000, ioaddr + Cnfg); + + yp->rx_mode = new_rx_mode; + outw(new_rx_mode, ioaddr + AddrMode); + memcpy(yp->mc_filter, hash_table, sizeof hash_table); /* Copy the hash table to the chip. */ for (i = 0; i < 4; i++) outw(hash_table[i], ioaddr + HashTbl + i*2); - outw(0x0003, ioaddr + AddrMode); - } else { /* Normal, unicast/broadcast-only mode. */ - outw(0x0001, ioaddr + AddrMode); + + /* Restart the Rx process. */ + outw(cfg_value | 0x1000, ioaddr + Cnfg); } - /* Restart the Rx process. */ - outw(cfg_value | 0x1000, ioaddr + Cnfg); } - -#ifdef MODULE -/* An additional parameter that may be passed in... */ -static int debug = -1; - -int -init_module(void) +static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { - int cards_found; - - if (debug >= 0) - yellowfin_debug = debug; - - root_yellowfin_dev = NULL; - cards_found = yellowfin_probe(0); + struct yellowfin_private *np = (void *)dev->priv; + long ioaddr = dev->base_addr; + u16 *data = (u16 *)&rq->ifr_data; + u32 *data32 = (void *)&rq->ifr_data; + + switch(cmd) { + case 0x8947: case 0x89F0: + /* SIOCGMIIPHY: Get the address of the PHY in use. */ + data[0] = np->phys[0] & 0x1f; + /* Fall Through */ + case 0x8948: case 0x89F1: + /* SIOCGMIIREG: Read the specified MII register. */ + data[3] = mdio_read(ioaddr, data[0] & 0x1f, data[1] & 0x1f); + return 0; + case 0x8949: case 0x89F2: + /* SIOCSMIIREG: Write the specified MII register */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + if (data[0] == np->phys[0]) { + u16 value = data[2]; + switch (data[1]) { + case 0: + /* Check for autonegotiation on or reset. */ + np->medialock = (value & 0x9000) ? 0 : 1; + if (np->medialock) + np->full_duplex = (value & 0x0100) ? 1 : 0; + break; + case 4: np->advertising = value; break; + } + /* Perhaps check_duplex(dev), depending on chip semantics. */ + } + mdio_write(ioaddr, data[0] & 0x1f, data[1] & 0x1f, data[2]); + return 0; + case SIOCGPARAMS: + data32[0] = np->msg_level; + data32[1] = np->multicast_filter_limit; + data32[2] = np->max_interrupt_work; + data32[3] = np->rx_copybreak; + return 0; + case SIOCSPARAMS: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + np->msg_level = data32[0]; + np->multicast_filter_limit = data32[1]; + np->max_interrupt_work = data32[2]; + np->rx_copybreak = data32[3]; + return 0; + default: + return -EOPNOTSUPP; + } +} - return cards_found ? 0 : -ENODEV; + +#ifdef MODULE +int init_module(void) +{ + /* Emit version even if no cards detected. */ + printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2); + return pci_drv_register(&yellowfin_drv_id, NULL); } -void -cleanup_module(void) +void cleanup_module(void) { - struct device *next_dev; + struct net_device *next_dev; + + pci_drv_unregister(&yellowfin_drv_id); /* No need to check MOD_IN_USE, as sys_delete_module() checks. */ while (root_yellowfin_dev) { - next_dev = ((struct yellowfin_private *)root_yellowfin_dev->priv)->next_module; + struct yellowfin_private *np = (void *)(root_yellowfin_dev->priv); unregister_netdev(root_yellowfin_dev); - release_region(root_yellowfin_dev->base_addr, YELLOWFIN_TOTAL_SIZE); +#ifdef USE_IO_OPS + release_region(root_yellowfin_dev->base_addr, + pci_id_tbl[np->chip_id].io_size); +#else + iounmap((char *)root_yellowfin_dev->base_addr); +#endif + next_dev = np->next_module; + if (np->priv_addr) + kfree(np->priv_addr); kfree(root_yellowfin_dev); root_yellowfin_dev = next_dev; } @@ -1293,8 +1472,9 @@ cleanup_module(void) /* * Local variables: - * compile-command: "gcc -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c yellowfin.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" - * SMP-compile-command: "gcc -D__SMP__ -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c yellowfin.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" + * compile-command: "make KERNVER=`uname -r` yellowfin.o" + * compile-cmd: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c yellowfin.c" + * simple-compile-command: "gcc -DMODULE -O6 -c yellowfin.c" * c-indent-level: 4 * c-basic-offset: 4 * tab-width: 4 diff --git a/linux/src/include/asm-i386/cache.h b/linux/src/include/asm-i386/cache.h new file mode 100644 index 0000000..cea6c85 --- /dev/null +++ b/linux/src/include/asm-i386/cache.h @@ -0,0 +1,18 @@ +/* + * include/asm-i386/cache.h + */ +#ifndef __ARCH_I386_CACHE_H +#define __ARCH_I386_CACHE_H + +/* bytes per L1 cache line */ +#if CPU==586 || CPU==686 +#define L1_CACHE_BYTES 32 +#else +#define L1_CACHE_BYTES 16 +#endif + +#define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1)) + +#define SMP_CACHE_BYTES L1_CACHE_BYTES + +#endif |