diff options
Diffstat (limited to 'linux/dev/drivers/scsi/aha152x.c')
| -rw-r--r-- | linux/dev/drivers/scsi/aha152x.c | 3281 |
1 files changed, 3281 insertions, 0 deletions
diff --git a/linux/dev/drivers/scsi/aha152x.c b/linux/dev/drivers/scsi/aha152x.c new file mode 100644 index 0000000..59ccea6 --- /dev/null +++ b/linux/dev/drivers/scsi/aha152x.c @@ -0,0 +1,3281 @@ +/* aha152x.c -- Adaptec AHA-152x driver + * Author: Jürgen E. Fischer, fischer@et-inf.fho-emden.de + * Copyright 1993, 1994, 1995, 1996 Jürgen E. Fischer + * + * + * This driver is based on + * fdomain.c -- Future Domain TMC-16x0 driver + * which is + * Copyright 1992, 1993 Rickard E. Faith (faith@cs.unc.edu) + * + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * + * $Id: aha152x.c,v 1.1 1999/04/26 05:44:22 tb Exp $ + * + * $Log: aha152x.c,v $ + * Revision 1.18 1996/09/07 20:10:40 fischer + * - fixed can_queue handling (multiple outstanding commands working again) + * + * Revision 1.17 1996/08/17 16:05:14 fischer + * - biosparam improved + * - interrupt verification + * - updated documentation + * - cleanups + * + * Revision 1.16 1996/06/09 00:04:56 root + * - added configuration symbols for insmod (aha152x/aha152x1) + * + * Revision 1.15 1996/04/30 14:52:06 fischer + * - proc info fixed + * - support for extended translation for >1GB disks + * + * Revision 1.14 1996/01/17 15:11:20 fischer + * - fixed lockup in MESSAGE IN phase after reconnection + * + * Revision 1.13 1996/01/09 02:15:53 fischer + * - some cleanups + * - moved request_irq behind controller initialization + * (to avoid spurious interrupts) + * + * Revision 1.12 1995/12/16 12:26:07 fischer + * - barrier()s added + * - configurable RESET delay added + * + * Revision 1.11 1995/12/06 21:18:35 fischer + * - some minor updates + * + * Revision 1.10 1995/07/22 19:18:45 fischer + * - support for 2 controllers + * - started synchronous data transfers (not working yet) + * + * Revision 1.9 1995/03/18 09:20:24 root + * - patches for PCMCIA and modules + * + * Revision 1.8 1995/01/21 22:07:19 root + * - snarf_region => request_region + * - aha152x_intr interface change + * + * Revision 1.7 1995/01/02 23:19:36 root + * - updated COMMAND_SIZE to cmd_len + * - changed sti() to restore_flags() + * - fixed some #ifdef which generated warnings + * + * Revision 1.6 1994/11/24 20:35:27 root + * - problem with odd number of bytes in fifo fixed + * + * Revision 1.5 1994/10/30 14:39:56 root + * - abort code fixed + * - debugging improved + * + * Revision 1.4 1994/09/12 11:33:01 root + * - irqaction to request_irq + * - abortion updated + * + * Revision 1.3 1994/08/04 13:53:05 root + * - updates for mid-level-driver changes + * - accept unexpected BUSFREE phase as error condition + * - parity check now configurable + * + * Revision 1.2 1994/07/03 12:56:36 root + * - cleaned up debugging code + * - more tweaking on reset delays + * - updated abort/reset code (pretty untested...) + * + * Revision 1.1 1994/05/28 21:18:49 root + * - update for mid-level interface change (abort-reset) + * - delays after resets adjusted for some slow devices + * + * Revision 1.0 1994/03/25 12:52:00 root + * - Fixed "more data than expected" problem + * - added new BIOS signatures + * + * Revision 0.102 1994/01/31 20:44:12 root + * - minor changes in insw/outsw handling + * + * Revision 0.101 1993/12/13 01:16:27 root + * - fixed STATUS phase (non-GOOD stati were dropped sometimes; + * fixes problems with CD-ROM sector size detection & media change) + * + * Revision 0.100 1993/12/10 16:58:47 root + * - fix for unsuccessful selections in case of non-continuous id assignments + * on the scsi bus. + * + * Revision 0.99 1993/10/24 16:19:59 root + * - fixed DATA IN (rare read errors gone) + * + * Revision 0.98 1993/10/17 12:54:44 root + * - fixed some recent fixes (shame on me) + * - moved initialization of scratch area to aha152x_queue + * + * Revision 0.97 1993/10/09 18:53:53 root + * - DATA IN fixed. Rarely left data in the fifo. + * + * Revision 0.96 1993/10/03 00:53:59 root + * - minor changes on DATA IN + * + * Revision 0.95 1993/09/24 10:36:01 root + * - change handling of MSGI after reselection + * - fixed sti/cli + * - minor changes + * + * Revision 0.94 1993/09/18 14:08:22 root + * - fixed bug in multiple outstanding command code + * - changed detection + * - support for kernel command line configuration + * - reset corrected + * - changed message handling + * + * Revision 0.93 1993/09/15 20:41:19 root + * - fixed bugs with multiple outstanding commands + * + * Revision 0.92 1993/09/13 02:46:33 root + * - multiple outstanding commands work (no problems with IBM drive) + * + * Revision 0.91 1993/09/12 20:51:46 root + * added multiple outstanding commands + * (some problem with this $%&? IBM device remain) + * + * Revision 0.9 1993/09/12 11:11:22 root + * - corrected auto-configuration + * - changed the auto-configuration (added some '#define's) + * - added support for dis-/reconnection + * + * Revision 0.8 1993/09/06 23:09:39 root + * - added support for the drive activity light + * - minor changes + * + * Revision 0.7 1993/09/05 14:30:15 root + * - improved phase detection + * - now using the new snarf_region code of 0.99pl13 + * + * Revision 0.6 1993/09/02 11:01:38 root + * first public release; added some signatures and biosparam() + * + * Revision 0.5 1993/08/30 10:23:30 root + * fixed timing problems with my IBM drive + * + * Revision 0.4 1993/08/29 14:06:52 root + * fixed some problems with timeouts due incomplete commands + * + * Revision 0.3 1993/08/28 15:55:03 root + * writing data works too. mounted and worked on a dos partition + * + * Revision 0.2 1993/08/27 22:42:07 root + * reading data works. Mounted a msdos partition. + * + * Revision 0.1 1993/08/25 13:38:30 root + * first "damn thing doesn't work" version + * + * Revision 0.0 1993/08/14 19:54:25 root + * empty function bodies; detect() works. + * + * + ************************************************************************** + + + + DESCRIPTION: + + This is the Linux low-level SCSI driver for Adaptec AHA-1520/1522 SCSI + host adapters. + + + CONFIGURATION ARGUMENTS: + + IOPORT base io address (0x340/0x140) + IRQ interrupt level (9-12; default 11) + SCSI_ID scsi id of controller (0-7; default 7) + RECONNECT allow targets to disconnect from the bus (0/1; default 1 [on]) + PARITY enable parity checking (0/1; default 1 [on]) + SYNCHRONOUS enable synchronous transfers (0/1; default 0 [off]) + (NOT WORKING YET) + DELAY: bus reset delay (default 100) + EXT_TRANS: enable extended translation (0/1: default 0 [off]) + (see NOTES below) + + COMPILE TIME CONFIGURATION (put into AHA152X in drivers/scsi/Makefile): + + -DAUTOCONF + use configuration the controller reports (AHA-152x only) + + -DSKIP_BIOSTEST + Don't test for BIOS signature (AHA-1510 or disabled BIOS) + + -DSETUP0="{ IOPORT, IRQ, SCSI_ID, RECONNECT, PARITY, SYNCHRONOUS, DELAY, EXT_TRANS }" + override for the first controller + + -DSETUP1="{ IOPORT, IRQ, SCSI_ID, RECONNECT, PARITY, SYNCHRONOUS, DELAY, EXT_TRANS }" + override for the second controller + + + LILO COMMAND LINE OPTIONS: + + aha152x=<IOPORT>[,<IRQ>[,<SCSI-ID>[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY> [,<EXT_TRANS]]]]]]] + + The normal configuration can be overridden by specifying a command line. + When you do this, the BIOS test is skipped. Entered values have to be + valid (known). Don't use values that aren't supported under normal + operation. If you think that you need other values: contact me. + For two controllers use the aha152x statement twice. + + + SYMBOLS FOR MODULE CONFIGURATION: + + aha152x=IOPORT,IRQ,SCSI_ID,RECONNECT,PARITY,SYNCHRONOUS,DELAY,EXT_TRANS + configuration override of first controller + + + aha152x1=IOPORT,IRQ,SCSI_ID,RECONNECT,PARITY,SYNCHRONOUS,DELAY,EXT_TRANS + configuration override of second controller + + + NOTES ON EXT_TRANS: + + SCSI uses block numbers to address blocks/sectors on a device. + The BIOS uses a cylinder/head/sector addressing scheme (C/H/S) + scheme instead. DOS expects a BIOS or driver that understands this + C/H/S addressing. + + The number of cylinders/heads/sectors is called geometry and is required + as base for requests in C/H/S adressing. SCSI only knows about the + total capacity of disks in blocks (sectors). + + Therefore the SCSI BIOS/DOS driver has to calculate a logical/virtual + geometry just to be able to support that addressing scheme. The geometry + returned by the SCSI BIOS is a pure calculation and has nothing to + do with the real/physical geometry of the disk (which is usually + irrelevant anyway). + + Basically this has no impact at all on Linux, because it also uses block + instead of C/H/S addressing. Unfortunately C/H/S addressing is also used + in the partition table and therefore every operating system has to know + the right geometry to be able to interpret it. + + Moreover there are certain limitations to the C/H/S addressing scheme, + namely the address space is limited to upto 255 heads, upto 63 sectors + and a maximum of 1023 cylinders. + + The AHA-1522 BIOS calculates the geometry by fixing the number of heads + to 64, the number of sectors to 32 and by calculating the number of + cylinders by dividing the capacity reported by the disk by 64*32 (1 MB). + This is considered to be the default translation. + + With respect to the limit of 1023 cylinders using C/H/S you can only + address the first GB of your disk in the partition table. Therefore + BIOSes of some newer controllers based on the AIC-6260/6360 support + extended translation. This means that the BIOS uses 255 for heads, + 63 for sectors and then divides the capacity of the disk by 255*63 + (about 8 MB), as soon it sees a disk greater than 1 GB. That results + in a maximum of about 8 GB adressable diskspace in the partition table + (but there are already bigger disks out there today). + + To make it even more complicated the translation mode might/might + not be configurable in certain BIOS setups. + + This driver does some more or less failsafe guessing to get the + geometry right in most cases: + + - for disks<1GB: use default translation (C/32/64) + - for disks>1GB: + - take current geometry from the partition table + (using scsicam_bios_param and accept only `valid' geometries, + ie. either (C/32/64) or (C/63/255)). This can be extended + translation even if it's not enabled in the driver. + - if that fails, take extended translation if enabled by override, + kernel or module parameter, otherwise take default translation and + ask the user for verification. This might on not yet partitioned + disks or + + + REFERENCES USED: + + "AIC-6260 SCSI Chip Specification", Adaptec Corporation. + + "SCSI COMPUTER SYSTEM INTERFACE - 2 (SCSI-2)", X3T9.2/86-109 rev. 10h + + "Writing a SCSI device driver for Linux", Rik Faith (faith@cs.unc.edu) + + "Kernel Hacker's Guide", Michael K. Johnson (johnsonm@sunsite.unc.edu) + + "Adaptec 1520/1522 User's Guide", Adaptec Corporation. + + Michael K. Johnson (johnsonm@sunsite.unc.edu) + + Drew Eckhardt (drew@cs.colorado.edu) + + Eric Youngdale (ericy@cais.com) + + special thanks to Eric Youngdale for the free(!) supplying the + documentation on the chip. + + **************************************************************************/ + +#ifdef MACH +#define AUTOCONF 1 +#endif + +#ifdef PCMCIA +#define MODULE +#endif + +#include <linux/module.h> + +#ifdef PCMCIA +#undef MODULE +#endif + +#include <linux/sched.h> +#include <asm/io.h> +#include <linux/blk.h> +#include "scsi.h" +#include "sd.h" +#include "hosts.h" +#include "constants.h" +#include <asm/system.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/wait.h> +#include <linux/ioport.h> +#include <linux/proc_fs.h> + +#include "aha152x.h" +#include <linux/stat.h> + +#include <scsi/scsicam.h> + +struct proc_dir_entry proc_scsi_aha152x = { + PROC_SCSI_AHA152X, 7, "aha152x", + S_IFDIR | S_IRUGO | S_IXUGO, 2 +}; + +/* DEFINES */ + +/* For PCMCIA cards, always use AUTOCONF */ +#if defined(PCMCIA) || defined(MODULE) +#if !defined(AUTOCONF) +#define AUTOCONF +#endif +#endif + +#if !defined(AUTOCONF) && !defined(SETUP0) +#error define AUTOCONF or SETUP0 +#endif + +#if defined(DEBUG_AHA152X) + +#undef SKIP_PORTS /* don't display ports */ + +#undef DEBUG_QUEUE /* debug queue() */ +#undef DEBUG_RESET /* debug reset() */ +#undef DEBUG_INTR /* debug intr() */ +#undef DEBUG_SELECTION /* debug selection part in intr() */ +#undef DEBUG_MSGO /* debug message out phase in intr() */ +#undef DEBUG_MSGI /* debug message in phase in intr() */ +#undef DEBUG_STATUS /* debug status phase in intr() */ +#undef DEBUG_CMD /* debug command phase in intr() */ +#undef DEBUG_DATAI /* debug data in phase in intr() */ +#undef DEBUG_DATAO /* debug data out phase in intr() */ +#undef DEBUG_ABORT /* debug abort() */ +#undef DEBUG_DONE /* debug done() */ +#undef DEBUG_BIOSPARAM /* debug biosparam() */ + +#undef DEBUG_RACE /* debug race conditions */ +#undef DEBUG_PHASES /* debug phases (useful to trace) */ +#undef DEBUG_QUEUES /* debug reselection */ + +/* recently used for debugging */ +#if 0 +#endif + +#define DEBUG_SELECTION +#define DEBUG_PHASES +#define DEBUG_RESET +#define DEBUG_ABORT + +#define DEBUG_DEFAULT (debug_reset|debug_abort) + +#endif + +/* END OF DEFINES */ + +extern unsigned long loops_per_sec; + +#define DELAY_DEFAULT 100 + +/* some additional "phases" for getphase() */ +#define P_BUSFREE 1 +#define P_PARITY 2 + +/* possible irq range */ +#define IRQ_MIN 9 +#define IRQ_MAX 12 +#define IRQS IRQ_MAX-IRQ_MIN+1 + +enum { + not_issued = 0x0001, + in_selection = 0x0002, + disconnected = 0x0004, + aborted = 0x0008, + sent_ident = 0x0010, + in_other = 0x0020, + in_sync = 0x0040, + sync_ok = 0x0080, +}; + +#if defined(MODULE) +#if defined(DEBUG_AHA152X) +int aha152x[] = { 0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0, DEBUG_DEFAULT }; +int aha152x1[] = { 0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0, DEBUG_DEFAULT }; +#else +int aha152x[] = { 0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0 }; +int aha152x1[] = { 0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0 }; +#endif +#endif + +/* set by aha152x_setup according to the command line */ +static int setup_count=0; +static struct aha152x_setup { + int io_port; + int irq; + int scsiid; + int reconnect; + int parity; + int synchronous; + int delay; + int ext_trans; +#ifdef DEBUG_AHA152X + int debug; +#endif + char *conf; +} setup[2]; + +static struct Scsi_Host *aha152x_host[IRQS]; + +#define HOSTDATA(shpnt) ((struct aha152x_hostdata *) &shpnt->hostdata) +#define CURRENT_SC (HOSTDATA(shpnt)->current_SC) +#define ISSUE_SC (HOSTDATA(shpnt)->issue_SC) +#define DISCONNECTED_SC (HOSTDATA(shpnt)->disconnected_SC) +#define DELAY (HOSTDATA(shpnt)->delay) +#define EXT_TRANS (HOSTDATA(shpnt)->ext_trans) +#define SYNCRATE (HOSTDATA(shpnt)->syncrate[CURRENT_SC->target]) +#define MSG(i) (HOSTDATA(shpnt)->message[i]) +#define MSGLEN (HOSTDATA(shpnt)->message_len) +#define ADDMSG(x) (MSG(MSGLEN++)=x) + +struct aha152x_hostdata { + Scsi_Cmnd *issue_SC; + Scsi_Cmnd *current_SC; + Scsi_Cmnd *disconnected_SC; + int aborting; + int abortion_complete; + int abort_result; + int commands; + + int reconnect; + int parity; + int synchronous; + int delay; + int ext_trans; + + int swint; + + unsigned char syncrate[8]; + + unsigned char message[256]; + int message_len; + +#ifdef DEBUG_AHA152X + int debug; +#endif +}; + +void aha152x_intr(int irq, void *dev_id, struct pt_regs *); +void aha152x_done(struct Scsi_Host *shpnt, int error); +void aha152x_setup(char *str, int *ints); +int aha152x_checksetup(struct aha152x_setup *setup); + +static void aha152x_reset_ports(struct Scsi_Host *shpnt); +static void aha152x_panic(struct Scsi_Host *shpnt, char *msg); + +static void disp_ports(struct Scsi_Host *shpnt); +static void show_command(Scsi_Cmnd *ptr); +static void show_queues(struct Scsi_Host *shpnt); +static void disp_enintr(struct Scsi_Host *shpnt); + +#if defined(DEBUG_RACE) +static void enter_driver(const char *); +static void leave_driver(const char *); +#endif + +/* possible i/o addresses for the AIC-6260 */ +static unsigned short ports[] = +{ + 0x340, /* default first */ + 0x140 +}; +#define PORT_COUNT (sizeof(ports) / sizeof(unsigned short)) + +#if !defined(SKIP_BIOSTEST) +/* possible locations for the Adaptec BIOS */ +static void *addresses[] = +{ + (void *) 0xdc000, /* default first */ + (void *) 0xc8000, + (void *) 0xcc000, + (void *) 0xd0000, + (void *) 0xd4000, + (void *) 0xd8000, + (void *) 0xe0000, + (void *) 0xeb800, /* VTech Platinum SMP */ + (void *) 0xf0000, +}; +#define ADDRESS_COUNT (sizeof(addresses) / sizeof(void *)) + +/* signatures for various AIC-6[23]60 based controllers. + The point in detecting signatures is to avoid useless and maybe + harmful probes on ports. I'm not sure that all listed boards pass + auto-configuration. For those which fail the BIOS signature is + obsolete, because user intervention to supply the configuration is + needed anyway. May be an information whether or not the BIOS supports + extended translation could be also useful here. */ +static struct signature { + char *signature; + int sig_offset; + int sig_length; +} signatures[] = +{ + { "Adaptec AHA-1520 BIOS", 0x102e, 21 }, /* Adaptec 152x */ + { "Adaptec AHA-1520B", 0x0b, 17 }, /* Adaptec 152x rev B */ + { "Adaptec AHA-1520B/1522B", 0x3e20, 23 }, /* Adaptec 1520B/1522B */ + { "Adaptec ASW-B626 BIOS", 0x1029, 21 }, /* on-board controller */ + { "Adaptec BIOS: ASW-B626", 0x0f, 22 }, /* on-board controller */ + { "Adaptec ASW-B626 S2", 0x2e6c, 19 }, /* on-board controller */ + { "Adaptec BIOS:AIC-6360", 0xc, 21 }, /* on-board controller */ + { "ScsiPro SP-360 BIOS", 0x2873, 19 }, /* ScsiPro-Controller */ + { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 }, /* Gigabyte Local-Bus-SCSI */ + { "Adaptec BIOS:AVA-282X", 0xc, 21 }, /* Adaptec 282x */ + { "Adaptec IBM Dock II SCSI", 0x2edd, 24 }, /* IBM Thinkpad Dock II */ + { "Adaptec BIOS:AHA-1532P", 0x1c, 22 }, /* IBM Thinkpad Dock II SCSI */ +}; +#define SIGNATURE_COUNT (sizeof(signatures) / sizeof(struct signature)) +#endif + + +static void do_pause(unsigned amount) /* Pause for amount*10 milliseconds */ +{ + unsigned long the_time = jiffies + amount; /* 0.01 seconds per jiffy */ + + while (jiffies < the_time) + barrier(); +} + +/* + * queue services: + */ +static inline void append_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC) +{ + Scsi_Cmnd *end; + + new_SC->host_scribble = (unsigned char *) NULL; + if(!*SC) + *SC=new_SC; + else { + for(end=*SC; end->host_scribble; end = (Scsi_Cmnd *) end->host_scribble) + ; + end->host_scribble = (unsigned char *) new_SC; + } +} + +static inline Scsi_Cmnd *remove_first_SC(Scsi_Cmnd **SC) +{ + Scsi_Cmnd *ptr; + + ptr=*SC; + if(ptr) + *SC= (Scsi_Cmnd *) (*SC)->host_scribble; + return ptr; +} + +static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, int target, int lun) +{ + Scsi_Cmnd *ptr, *prev; + + for(ptr=*SC, prev=NULL; + ptr && ((ptr->target!=target) || (ptr->lun!=lun)); + prev = ptr, ptr = (Scsi_Cmnd *) ptr->host_scribble) + ; + + if(ptr){ + if(prev) + prev->host_scribble = ptr->host_scribble; + else + *SC= (Scsi_Cmnd *) ptr->host_scribble; + } + + return ptr; +} + +/* + * read inbound byte and wait for ACK to get low + */ +static void make_acklow(struct Scsi_Host *shpnt) +{ + SETPORT(SXFRCTL0, CH1|SPIOEN); + GETPORT(SCSIDAT); + SETPORT(SXFRCTL0, CH1); + + while(TESTHI(SCSISIG, ACKI)) + barrier(); +} + +/* + * detect current phase more reliable: + * phase is valid, when the target asserts REQ after we've deasserted ACK. + * + * return value is a valid phase or an error code. + * + * errorcodes: + * P_BUSFREE BUS FREE phase detected + * P_PARITY parity error in DATA phase + */ +static int getphase(struct Scsi_Host *shpnt) +{ + int phase, sstat1; + + while(1) { + do { + while(!((sstat1 = GETPORT(SSTAT1)) & (BUSFREE|SCSIRSTI|REQINIT))) + barrier(); + if(sstat1 & BUSFREE) + return P_BUSFREE; + if(sstat1 & SCSIRSTI) { + printk("aha152x: RESET IN\n"); + SETPORT(SSTAT1, SCSIRSTI); + } + } while(TESTHI(SCSISIG, ACKI) || TESTLO(SSTAT1, REQINIT)); + + SETPORT(SSTAT1, CLRSCSIPERR); + + phase = GETPORT(SCSISIG) & P_MASK ; + + if(TESTHI(SSTAT1, SCSIPERR)) { + if((phase & (CDO|MSGO))==0) /* DATA phase */ + return P_PARITY; + + make_acklow(shpnt); + } else + return phase; + } +} + +/* called from init/main.c */ +void aha152x_setup(char *str, int *ints) +{ + if(setup_count>2) + panic("aha152x: you can only configure up to two controllers\n"); + + setup[setup_count].conf = str; + setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340; + setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11; + setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7; + setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1; + setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1; + setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 0 /* FIXME: 1 */; + setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT; + setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0; +#ifdef DEBUG_AHA152X + setup[setup_count].debug = ints[0] >= 9 ? ints[9] : DEBUG_DEFAULT; + if(ints[0]>9) { + printk("aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>" + "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>[,<DEBUG>]]]]]]]]\n"); +#else + if(ints[0]>8) { + printk("aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>" + "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n"); +#endif + } else + setup_count++; +} + +/* + * Test, if port_base is valid. + */ +static int aha152x_porttest(int io_port) +{ + int i; + + if(check_region(io_port, IO_RANGE)) + return 0; + + SETPORT(io_port+O_DMACNTRL1, 0); /* reset stack pointer */ + for(i=0; i<16; i++) + SETPORT(io_port+O_STACK, i); + + SETPORT(io_port+O_DMACNTRL1, 0); /* reset stack pointer */ + for(i=0; i<16 && GETPORT(io_port+O_STACK)==i; i++) + ; + + return(i==16); +} + +int aha152x_checksetup(struct aha152x_setup *setup) +{ + int i; + +#ifndef PCMCIA + for(i=0; i<PORT_COUNT && (setup->io_port != ports[i]); i++) + ; + + if(i==PORT_COUNT) + return 0; +#endif + + if(!aha152x_porttest(setup->io_port)) + return 0; + + if(setup->irq<IRQ_MIN && setup->irq>IRQ_MAX) + return 0; + + if((setup->scsiid < 0) || (setup->scsiid > 7)) + return 0; + + if((setup->reconnect < 0) || (setup->reconnect > 1)) + return 0; + + if((setup->parity < 0) || (setup->parity > 1)) + return 0; + + if((setup->synchronous < 0) || (setup->synchronous > 1)) + return 0; + + if((setup->ext_trans < 0) || (setup->ext_trans > 1)) + return 0; + + + return 1; +} + +void aha152x_swintr(int irqno, void *dev_id, struct pt_regs * regs) +{ + struct Scsi_Host *shpnt = aha152x_host[irqno-IRQ_MIN]; + + if(!shpnt) + panic("aha152x: catched software interrupt for unknown controller.\n"); + + HOSTDATA(shpnt)->swint++; +} + + +int aha152x_detect(Scsi_Host_Template * tpnt) +{ + int i, j, ok; +#if defined(AUTOCONF) + aha152x_config conf; +#endif + + tpnt->proc_dir = &proc_scsi_aha152x; + + for(i=0; i<IRQS; i++) + aha152x_host[i] = (struct Scsi_Host *) NULL; + + if(setup_count) { + printk("aha152x: processing commandline: "); + + for(i=0; i<setup_count; i++) + if(!aha152x_checksetup(&setup[i])) { + printk("\naha152x: %s\n", setup[i].conf); + printk("aha152x: invalid line (controller=%d)\n", i+1); + } + + printk("ok\n"); + } + +#ifdef SETUP0 + if(setup_count<2) { + struct aha152x_setup override = SETUP0; + + if(setup_count==0 || (override.io_port != setup[0].io_port)) + if(!aha152x_checksetup(&override)) { + printk("\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n", + override.io_port, + override.irq, + override.scsiid, + override.reconnect, + override.parity, + override.synchronous, + override.delay, + override.ext_trans); + } else + setup[setup_count++] = override; + } +#endif + +#ifdef SETUP1 + if(setup_count<2) { + struct aha152x_setup override = SETUP1; + + if(setup_count==0 || (override.io_port != setup[0].io_port)) + if(!aha152x_checksetup(&override)) { + printk("\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n", + override.io_port, + override.irq, + override.scsiid, + override.reconnect, + override.parity, + override.synchronous, + override.delay, + override.ext_trans); + } else + setup[setup_count++] = override; + } +#endif + +#if defined(MODULE) + if(setup_count<2 && aha152x[0]!=0) { + setup[setup_count].conf = ""; + setup[setup_count].io_port = aha152x[0]; + setup[setup_count].irq = aha152x[1]; + setup[setup_count].scsiid = aha152x[2]; + setup[setup_count].reconnect = aha152x[3]; + setup[setup_count].parity = aha152x[4]; + setup[setup_count].synchronous = aha152x[5]; + setup[setup_count].delay = aha152x[6]; + setup[setup_count].ext_trans = aha152x[7]; +#ifdef DEBUG_AHA152X + setup[setup_count].debug = aha152x[8]; +#endif + if(aha152x_checksetup(&setup[setup_count])) + setup_count++; + else + printk("\naha152x: invalid module argument aha152x=0x%x,%d,%d,%d,%d,%d,%d,%d\n", + setup[setup_count].io_port, + setup[setup_count].irq, + setup[setup_count].scsiid, + setup[setup_count].reconnect, + setup[setup_count].parity, + setup[setup_count].synchronous, + setup[setup_count].delay, + setup[setup_count].ext_trans); + } + + if(setup_count<2 && aha152x1[0]!=0) { + setup[setup_count].conf = ""; + setup[setup_count].io_port = aha152x1[0]; + setup[setup_count].irq = aha152x1[1]; + setup[setup_count].scsiid = aha152x1[2]; + setup[setup_count].reconnect = aha152x1[3]; + setup[setup_count].parity = aha152x1[4]; + setup[setup_count].synchronous = aha152x1[5]; + setup[setup_count].delay = aha152x1[6]; + setup[setup_count].ext_trans = aha152x1[7]; +#ifdef DEBUG_AHA152X + setup[setup_count].debug = aha152x1[8]; +#endif + if(aha152x_checksetup(&setup[setup_count])) + setup_count++; + else + printk("\naha152x: invalid module argument aha152x1=0x%x,%d,%d,%d,%d,%d,%d,%d\n", + setup[setup_count].io_port, + setup[setup_count].irq, + setup[setup_count].scsiid, + setup[setup_count].reconnect, + setup[setup_count].parity, + setup[setup_count].synchronous, + setup[setup_count].delay, + setup[setup_count].ext_trans); + } +#endif + +#if defined(AUTOCONF) + if(setup_count<2) { +#if !defined(SKIP_BIOSTEST) + ok=0; + for(i=0; i < ADDRESS_COUNT && !ok; i++) + for(j=0; (j < SIGNATURE_COUNT) && !ok; j++) + ok=!memcmp((void *) addresses[i]+signatures[j].sig_offset, + (void *) signatures[j].signature, + (int) signatures[j].sig_length); + + if(!ok && setup_count==0) + return 0; + + printk("aha152x: BIOS test: passed, "); +#else + printk("aha152x: "); +#endif /* !SKIP_BIOSTEST */ + + ok=0; + for(i=0; i<PORT_COUNT && setup_count<2; i++) { + if((setup_count==1) && (setup[0].io_port == ports[i])) + continue; + + if(aha152x_porttest(ports[i])) { + ok++; + setup[setup_count].io_port = ports[i]; + + conf.cf_port = + (GETPORT(ports[i]+O_PORTA)<<8) + GETPORT(ports[i]+O_PORTB); + + setup[setup_count].irq = IRQ_MIN + conf.cf_irq; + setup[setup_count].scsiid = conf.cf_id; + setup[setup_count].reconnect = conf.cf_tardisc; + setup[setup_count].parity = !conf.cf_parity; + setup[setup_count].synchronous = 0 /* FIXME: conf.cf_syncneg */; + setup[setup_count].delay = DELAY_DEFAULT; + setup[setup_count].ext_trans = 0; +#ifdef DEBUG_AHA152X + setup[setup_count].debug = DEBUG_DEFAULT; +#endif + setup_count++; + } + } + + if(ok) + printk("auto configuration: ok, "); + } +#endif + + printk("detected %d controller(s)\n", setup_count); + + for(i=0; i<setup_count; i++) { + struct Scsi_Host *shpnt; + unsigned long int the_time; + + shpnt = aha152x_host[setup[i].irq-IRQ_MIN] = + scsi_register(tpnt, sizeof(struct aha152x_hostdata)); + + shpnt->io_port = setup[i].io_port; + shpnt->n_io_port = IO_RANGE; + shpnt->irq = setup[i].irq; + + ISSUE_SC = (Scsi_Cmnd *) NULL; + CURRENT_SC = (Scsi_Cmnd *) NULL; + DISCONNECTED_SC = (Scsi_Cmnd *) NULL; + + HOSTDATA(shpnt)->reconnect = setup[i].reconnect; + HOSTDATA(shpnt)->parity = setup[i].parity; + HOSTDATA(shpnt)->synchronous = setup[i].synchronous; + HOSTDATA(shpnt)->delay = setup[i].delay; + HOSTDATA(shpnt)->ext_trans = setup[i].ext_trans; +#ifdef DEBUG_AHA152X + HOSTDATA(shpnt)->debug = setup[i].debug; +#endif + + HOSTDATA(shpnt)->aborting = 0; + HOSTDATA(shpnt)->abortion_complete = 0; + HOSTDATA(shpnt)->abort_result = 0; + HOSTDATA(shpnt)->commands = 0; + + HOSTDATA(shpnt)->message_len = 0; + + for(j=0; j<8; j++) + HOSTDATA(shpnt)->syncrate[j] = 0; + + SETPORT(SCSIID, setup[i].scsiid << 4); + shpnt->this_id=setup[i].scsiid; + + if(setup[i].reconnect) + shpnt->can_queue=AHA152X_MAXQUEUE; + + /* RESET OUT */ + SETBITS(SCSISEQ, SCSIRSTO); + do_pause(30); + CLRBITS(SCSISEQ, SCSIRSTO); + do_pause(setup[i].delay); + + aha152x_reset_ports(shpnt); + + printk("aha152x%d: vital data: PORTBASE=0x%03x, IRQ=%d, SCSI ID=%d," + " reconnect=%s, parity=%s, synchronous=%s, delay=%d, extended translation=%s\n", + i, + shpnt->io_port, + shpnt->irq, + shpnt->this_id, + HOSTDATA(shpnt)->reconnect ? "enabled" : "disabled", + HOSTDATA(shpnt)->parity ? "enabled" : "disabled", + HOSTDATA(shpnt)->synchronous ? "enabled" : "disabled", + HOSTDATA(shpnt)->delay, + HOSTDATA(shpnt)->ext_trans ? "enabled" : "disabled"); + + request_region(shpnt->io_port, IO_RANGE, "aha152x"); /* Register */ + + /* not expecting any interrupts */ + SETPORT(SIMODE0, 0); + SETPORT(SIMODE1, 0); + + SETBITS(DMACNTRL0, INTEN); + + ok = request_irq(shpnt->irq, aha152x_swintr, SA_INTERRUPT, "aha152x", NULL); + if(ok<0) { + if(ok == -EINVAL) + printk("aha152x%d: bad IRQ %d.\n", i, shpnt->irq); + else if(ok == -EBUSY) + printk("aha152x%d: IRQ %d already in use.\n", i, shpnt->irq); + else + printk("\naha152x%d: Unexpected error code %d on requesting IRQ %d.\n", i, ok, shpnt->irq); + printk("aha152x: driver needs an IRQ.\n"); + + scsi_unregister(shpnt); + shpnt=aha152x_host[shpnt->irq-IRQ_MIN]=0; + continue; + } + + HOSTDATA(shpnt)->swint=0; + + printk("aha152x: trying software interrupt, "); + SETBITS(DMACNTRL0, SWINT); + + the_time=jiffies+100; + while(!HOSTDATA(shpnt)->swint && jiffies<the_time) + barrier(); + + free_irq(shpnt->irq,0); + + if(!HOSTDATA(shpnt)->swint) { + if(TESTHI(DMASTAT, INTSTAT)) { + printk("lost.\n"); + } else { + printk("failed.\n"); + } + + printk("aha152x: IRQ %d possibly wrong. Please verify.\n", shpnt->irq); + + scsi_unregister(shpnt); + shpnt=aha152x_host[shpnt->irq-IRQ_MIN]=0; + continue; + } + + printk("ok.\n"); + + CLRBITS(DMACNTRL0, SWINT); + + /* clear interrupts */ + SETPORT(SSTAT0, 0x7f); + SETPORT(SSTAT1, 0xef); + + if(request_irq(shpnt->irq,aha152x_intr,SA_INTERRUPT,"aha152x",NULL)<0) { + printk("aha152x: failed to reassign interrupt.\n"); + } + } + + return (setup_count>0); +} + +/* + * Queue a command and setup interrupts for a free bus. + */ +int aha152x_queue(Scsi_Cmnd * SCpnt, void (*done)(Scsi_Cmnd *)) +{ + struct Scsi_Host *shpnt = SCpnt->host; + unsigned long flags; + +#if defined(DEBUG_RACE) + enter_driver("queue"); +#else +#if defined(DEBUG_QUEUE) + if(HOSTDATA(shpnt)->debug & debug_queue) + printk("aha152x: queue(), "); +#endif +#endif + +#if defined(DEBUG_QUEUE) + if(HOSTDATA(shpnt)->debug & debug_queue) { + printk("SCpnt (target = %d lun = %d cmnd = ", + SCpnt->target, SCpnt->lun); + print_command(SCpnt->cmnd); + printk(", cmd_len=%d, pieces = %d size = %u), ", + SCpnt->cmd_len, SCpnt->use_sg, SCpnt->request_bufflen); + disp_ports(shpnt); + } +#endif + + SCpnt->scsi_done = done; + + /* setup scratch area + SCp.ptr : buffer pointer + SCp.this_residual : buffer length + SCp.buffer : next buffer + SCp.buffers_residual : left buffers in list + SCp.phase : current state of the command */ + SCpnt->SCp.phase = not_issued; + if (SCpnt->use_sg) { + SCpnt->SCp.buffer = (struct scatterlist *) SCpnt->request_buffer; + SCpnt->SCp.ptr = SCpnt->SCp.buffer->address; + SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length; + SCpnt->SCp.buffers_residual = SCpnt->use_sg - 1; + } else { + SCpnt->SCp.ptr = (char *)SCpnt->request_buffer; + SCpnt->SCp.this_residual = SCpnt->request_bufflen; + SCpnt->SCp.buffer = NULL; + SCpnt->SCp.buffers_residual = 0; + } + + SCpnt->SCp.Status = CHECK_CONDITION; + SCpnt->SCp.Message = 0; + SCpnt->SCp.have_data_in = 0; + SCpnt->SCp.sent_command = 0; + + /* Turn led on, when this is the first command. */ + save_flags(flags); + cli(); + HOSTDATA(shpnt)->commands++; + if(HOSTDATA(shpnt)->commands==1) + SETPORT(PORTA, 1); + +#if defined(DEBUG_QUEUES) + if(HOSTDATA(shpnt)->debug & debug_queues) + printk("i+ (%d), ", HOSTDATA(shpnt)->commands); +#endif + append_SC(&ISSUE_SC, SCpnt); + + /* Enable bus free interrupt, when we aren't currently on the bus */ + if(!CURRENT_SC) { + SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0); + SETPORT(SIMODE1, ISSUE_SC ? ENBUSFREE : 0); + } + restore_flags(flags); + +#if defined(DEBUG_RACE) + leave_driver("queue"); +#endif + + return 0; +} + +/* + * We only support commands in interrupt-driven fashion + */ +int aha152x_command(Scsi_Cmnd *SCpnt) +{ + printk("aha152x: interrupt driven driver; use aha152x_queue()\n"); + return -1; +} + +/* + * Abort a queued command + * (commands that are on the bus can't be aborted easily) + */ +int aha152x_abort(Scsi_Cmnd *SCpnt) +{ + struct Scsi_Host *shpnt = SCpnt->host; + unsigned long flags; + Scsi_Cmnd *ptr, *prev; + + save_flags(flags); + cli(); + +#if defined(DEBUG_ABORT) + if(HOSTDATA(shpnt)->debug & debug_abort) { + printk("aha152x: abort(), SCpnt=0x%08x, ", (unsigned int) SCpnt); + show_queues(shpnt); + } +#endif + + /* look for command in issue queue */ + for(ptr=ISSUE_SC, prev=NULL; + ptr && ptr!=SCpnt; + prev=ptr, ptr=(Scsi_Cmnd *) ptr->host_scribble) + ; + + if(ptr) { + /* dequeue */ + if(prev) + prev->host_scribble = ptr->host_scribble; + else + ISSUE_SC = (Scsi_Cmnd *) ptr->host_scribble; + + HOSTDATA(shpnt)->commands--; + + restore_flags(flags); + + ptr->host_scribble = NULL; + ptr->result = DID_ABORT << 16; + ptr->scsi_done(ptr); + + return SCSI_ABORT_SUCCESS; + } + + /* if the bus is busy or a command is currently processed, + we can't do anything more */ + if (TESTLO(SSTAT1, BUSFREE) || (CURRENT_SC && CURRENT_SC!=SCpnt)) { + /* fail abortion, if bus is busy */ + + if(!CURRENT_SC) + printk("bus busy w/o current command, "); + + restore_flags(flags); + + return SCSI_ABORT_BUSY; + } + + /* bus is free */ + + if(CURRENT_SC) { + HOSTDATA(shpnt)->commands--; + + /* target entered bus free before COMMAND COMPLETE, nothing to abort */ + restore_flags(flags); + CURRENT_SC->result = DID_ERROR << 16; + CURRENT_SC->scsi_done(CURRENT_SC); + CURRENT_SC = (Scsi_Cmnd *) NULL; + + return SCSI_ABORT_SUCCESS; + } + + /* look for command in disconnected queue */ + for(ptr=DISCONNECTED_SC, prev=NULL; + ptr && ptr!=SCpnt; + prev=ptr, ptr=(Scsi_Cmnd *) ptr->host_scribble) + ; + + if(!ptr) { + /* command wasn't found */ + printk("command not found\n"); + restore_flags(flags); + + return SCSI_ABORT_NOT_RUNNING; + } + + if(!HOSTDATA(shpnt)->aborting) { + /* dequeue */ + if(prev) + prev->host_scribble = ptr->host_scribble; + else + DISCONNECTED_SC = (Scsi_Cmnd *) ptr->host_scribble; + + HOSTDATA(shpnt)->commands--; + + /* set command current and initiate selection, + let the interrupt routine take care of the abortion */ + CURRENT_SC = ptr; + ptr->SCp.phase = in_selection|aborted; + SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->target); + + ADDMSG(ABORT); + + /* enable interrupts for SELECTION OUT DONE and SELECTION TIME OUT */ + SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0)); + SETPORT(SIMODE1, ENSELTIMO); + + /* Enable SELECTION OUT sequence */ + SETBITS(SCSISEQ, ENSELO | ENAUTOATNO); + + SETBITS(DMACNTRL0, INTEN); + HOSTDATA(shpnt)->abort_result=SCSI_ABORT_SUCCESS; + HOSTDATA(shpnt)->aborting++; + HOSTDATA(shpnt)->abortion_complete=0; + + sti(); /* Hi Eric, guess what ;-) */ + + /* sleep until the abortion is complete */ + while(!HOSTDATA(shpnt)->abortion_complete) + barrier(); + HOSTDATA(shpnt)->aborting=0; + + return HOSTDATA(shpnt)->abort_result; + } else { + /* we're already aborting a command */ + restore_flags(flags); + + return SCSI_ABORT_BUSY; + } +} + +/* + * Restore default values to the AIC-6260 registers and reset the fifos + */ +static void aha152x_reset_ports(struct Scsi_Host *shpnt) +{ + /* disable interrupts */ + SETPORT(DMACNTRL0, RSTFIFO); + + SETPORT(SCSISEQ, 0); + + SETPORT(SXFRCTL1, 0); + SETPORT(SCSISIG, 0); + SETPORT(SCSIRATE, 0); + + /* clear all interrupt conditions */ + SETPORT(SSTAT0, 0x7f); + SETPORT(SSTAT1, 0xef); + + SETPORT(SSTAT4, SYNCERR|FWERR|FRERR); + + SETPORT(DMACNTRL0, 0); + SETPORT(DMACNTRL1, 0); + + SETPORT(BRSTCNTRL, 0xf1); + + /* clear SCSI fifo and transfer count */ + SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); + SETPORT(SXFRCTL0, CH1); + + /* enable interrupts */ + SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0); + SETPORT(SIMODE1, ISSUE_SC ? ENBUSFREE : 0); +} + +/* + * Reset registers, reset a hanging bus and + * kill active and disconnected commands for target w/o soft reset + */ +int aha152x_reset(Scsi_Cmnd *SCpnt, unsigned int unused) +{ + struct Scsi_Host *shpnt = SCpnt->host; + unsigned long flags; + Scsi_Cmnd *ptr, *prev, *next; + + aha152x_reset_ports(shpnt); + + /* Reset, if bus hangs */ + if(TESTLO(SSTAT1, BUSFREE)) { + CLRBITS(DMACNTRL0, INTEN); + +#if defined(DEBUG_RESET) + if(HOSTDATA(shpnt)->debug & debug_reset) { + printk("aha152x: reset(), bus not free: SCSI RESET OUT\n"); + show_queues(shpnt); + } +#endif + + ptr=CURRENT_SC; + if(ptr && !ptr->device->soft_reset) { + ptr->host_scribble = NULL; + ptr->result = DID_RESET << 16; + ptr->scsi_done(CURRENT_SC); + CURRENT_SC=NULL; + } + + save_flags(flags); + cli(); + prev=NULL; ptr=DISCONNECTED_SC; + while(ptr) { + if(!ptr->device->soft_reset) { + if(prev) + prev->host_scribble = ptr->host_scribble; + else + DISCONNECTED_SC = (Scsi_Cmnd *) ptr->host_scribble; + + next = (Scsi_Cmnd *) ptr->host_scribble; + + ptr->host_scribble = NULL; + ptr->result = DID_RESET << 16; + ptr->scsi_done(ptr); + + ptr = next; + } else { + prev=ptr; + ptr = (Scsi_Cmnd *) ptr->host_scribble; + } + } + restore_flags(flags); + +#if defined(DEBUG_RESET) + if(HOSTDATA(shpnt)->debug & debug_reset) { + printk("commands on targets w/ soft-resets:\n"); + show_queues(shpnt); + } +#endif + + /* RESET OUT */ + SETPORT(SCSISEQ, SCSIRSTO); + do_pause(30); + SETPORT(SCSISEQ, 0); + do_pause(DELAY); + + SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0); + SETPORT(SIMODE1, ISSUE_SC ? ENBUSFREE : 0); + + SETPORT(DMACNTRL0, INTEN); + } + + return SCSI_RESET_SUCCESS; +} + +/* + * Return the "logical geometry" + */ +int aha152x_biosparam(Scsi_Disk * disk, kdev_t dev, int *info_array) +{ + struct Scsi_Host *shpnt=disk->device->host; + +#if defined(DEBUG_BIOSPARAM) + if(HOSTDATA(shpnt)->debug & debug_biosparam) + printk("aha152x_biosparam: dev=%s, size=%d, ", + kdevname(dev), disk->capacity); +#endif + + /* try default translation */ + info_array[0]=64; + info_array[1]=32; + info_array[2]=disk->capacity / (64 * 32); + + /* for disks >1GB do some guessing */ + if(info_array[2]>=1024) { + int info[3]; + + /* try to figure out the geometry from the partition table */ + if(scsicam_bios_param(disk, dev, info)<0 || + !((info[0]==64 && info[1]==32) || (info[0]==255 && info[1]==63))) { + if(EXT_TRANS) { + printk("aha152x: unable to verify geometry for disk with >1GB.\n" + " using extended translation.\n"); + info_array[0] = 255; + info_array[1] = 63; + info_array[2] = disk->capacity / (255 * 63); + } else { + printk("aha152x: unable to verify geometry for disk with >1GB.\n" + " Using default translation. Please verify yourself.\n" + " Perhaps you need to enable extended translation in the driver.\n" + " See /usr/src/linux/drivers/scsi/aha152x.c for details.\n"); + } + } else { + info_array[0]=info[0]; + info_array[1]=info[1]; + info_array[2]=info[2]; + + if(info[0]==255 && !EXT_TRANS) { + printk("aha152x: current partition table is using extended translation.\n" + " using it also, although it's not explicty enabled.\n"); + } + } + } + +#if defined(DEBUG_BIOSPARAM) + if(HOSTDATA(shpnt)->debug & debug_biosparam) { + printk("bios geometry: head=%d, sec=%d, cyl=%d\n", + info_array[0], info_array[1], info_array[2]); + printk("WARNING: check, if the bios geometry is correct.\n"); + } +#endif + + return 0; +} + +/* + * Internal done function + */ +void aha152x_done(struct Scsi_Host *shpnt, int error) +{ + unsigned long flags; + Scsi_Cmnd *done_SC; + +#if defined(DEBUG_DONE) + if(HOSTDATA(shpnt)->debug & debug_done) { + printk("\naha152x: done(), "); + disp_ports(shpnt); + } +#endif + + if(CURRENT_SC) { +#if defined(DEBUG_DONE) + if(HOSTDATA(shpnt)->debug & debug_done) + printk("done(%x), ", error); +#endif + + save_flags(flags); + cli(); + + done_SC = CURRENT_SC; + CURRENT_SC = NULL; + + /* turn led off, when no commands are in the driver */ + HOSTDATA(shpnt)->commands--; + if(!HOSTDATA(shpnt)->commands) + SETPORT(PORTA, 0); /* turn led off */ + +#if defined(DEBUG_QUEUES) + if(HOSTDATA(shpnt)->debug & debug_queues) + printk("ok (%d), ", HOSTDATA(shpnt)->commands); +#endif + restore_flags(flags); + + SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0); + SETPORT(SIMODE1, ISSUE_SC ? ENBUSFREE : 0); + +#if 0 +/* Why poll for the BUS FREE phase, when we have setup the interrupt!? */ +#if defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & debug_phases) + printk("BUS FREE loop, "); +#endif + while(TESTLO(SSTAT1, BUSFREE)) + barrier(); +#if defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & debug_phases) + printk("BUS FREE\n"); +#endif +#endif + + done_SC->result = error; + if(done_SC->scsi_done) { +#if defined(DEBUG_DONE) + if(HOSTDATA(shpnt)->debug & debug_done) + printk("calling scsi_done, "); +#endif + done_SC->scsi_done(done_SC); +#if defined(DEBUG_DONE) + if(HOSTDATA(shpnt)->debug & debug_done) + printk("done returned, "); +#endif + } else + panic("aha152x: current_SC->scsi_done() == NULL"); + } else + aha152x_panic(shpnt, "done() called outside of command"); +} + +/* + * Interrupts handler (main routine of the driver) + */ +void aha152x_intr(int irqno, void *dev_id, struct pt_regs * regs) +{ + struct Scsi_Host *shpnt = aha152x_host[irqno-IRQ_MIN]; + unsigned int flags; + int done=0, phase; + +#if defined(DEBUG_RACE) + enter_driver("intr"); +#else +#if defined(DEBUG_INTR) + if(HOSTDATA(shpnt)->debug & debug_intr) + printk("\naha152x: intr(), "); +#endif +#endif + + if(!shpnt) + panic("aha152x: catched interrupt for unknown controller.\n"); + + /* no more interrupts from the controller, while we're busy. + INTEN has to be restored, when we're ready to leave + intr(). To avoid race conditions, we have to return + immediately afterwards. */ + CLRBITS(DMACNTRL0, INTEN); + sti(); /* Yes, sti() really needs to be here */ + + /* disconnected target is trying to reconnect. + Only possible, if we have disconnected nexuses and + nothing is occupying the bus. + */ + if(TESTHI(SSTAT0, SELDI) && + DISCONNECTED_SC && + (!CURRENT_SC || (CURRENT_SC->SCp.phase & in_selection)) ) { + int identify_msg, target, i; + + /* Avoid conflicts when a target reconnects + while we are trying to connect to another. */ + if(CURRENT_SC) { +#if defined(DEBUG_QUEUES) + if(HOSTDATA(shpnt)->debug & debug_queues) + printk("i+, "); +#endif + save_flags(flags); + cli(); + append_SC(&ISSUE_SC, CURRENT_SC); + CURRENT_SC=NULL; + restore_flags(flags); + } + + /* disable sequences */ + SETPORT(SCSISEQ, 0); + SETPORT(SSTAT0, CLRSELDI); + SETPORT(SSTAT1, CLRBUSFREE); + +#if defined(DEBUG_QUEUES) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_queues|debug_phases)) + printk("reselected, "); +#endif + + i = GETPORT(SELID) & ~(1 << shpnt->this_id); + target=0; + + if(i==0) + aha152x_panic(shpnt, "reconnecting target unknown"); + + for(; (i & 1)==0; target++, i>>=1) + ; + +#if defined(DEBUG_QUEUES) + if(HOSTDATA(shpnt)->debug & debug_queues) + printk("SELID=%02x, target=%d, ", GETPORT(SELID), target); +#endif + SETPORT(SCSIID, (shpnt->this_id << OID_) | target); + SETPORT(SCSISEQ, ENRESELI); + + if(TESTLO(SSTAT0, SELDI)) + aha152x_panic(shpnt, "RESELI failed"); + + SETPORT(SCSIRATE, HOSTDATA(shpnt)->syncrate[target]&0x7f); + + SETPORT(SCSISIG, P_MSGI); + + /* Get identify message */ + if((i=getphase(shpnt))!=P_MSGI) { + printk("target doesn't enter MSGI to identify (phase=%02x)\n", i); + aha152x_panic(shpnt, "unknown lun"); + } + SETPORT(SCSISEQ, 0); + + SETPORT(SXFRCTL0, CH1); + + identify_msg = GETPORT(SCSIBUS); + + if(!(identify_msg & IDENTIFY_BASE)) { + printk("target=%d, inbound message (%02x) != IDENTIFY\n", + target, identify_msg); + aha152x_panic(shpnt, "unknown lun"); + } + + +#if defined(DEBUG_QUEUES) + if(HOSTDATA(shpnt)->debug & debug_queues) + printk("identify=%02x, lun=%d, ", identify_msg, identify_msg & 0x3f); +#endif + + save_flags(flags); + cli(); + +#if defined(DEBUG_QUEUES) + if(HOSTDATA(shpnt)->debug & debug_queues) + printk("d-, "); +#endif + CURRENT_SC = remove_SC(&DISCONNECTED_SC, target, identify_msg & 0x3f); + + if(!CURRENT_SC) { + printk("lun=%d, ", identify_msg & 0x3f); + aha152x_panic(shpnt, "no disconnected command for that lun"); + } + + CURRENT_SC->SCp.phase &= ~disconnected; + restore_flags(flags); + + make_acklow(shpnt); + if(getphase(shpnt)!=P_MSGI) { + SETPORT(SIMODE0, 0); + SETPORT(SIMODE1, ENPHASEMIS|ENBUSFREE); +#if defined(DEBUG_RACE) + leave_driver("(reselected) intr"); +#endif + SETBITS(DMACNTRL0, INTEN); + return; + } + } + + /* Check, if we aren't busy with a command */ + if(!CURRENT_SC) { + /* bus is free to issue a queued command */ + if(TESTHI(SSTAT1, BUSFREE) && ISSUE_SC) { + save_flags(flags); + cli(); +#if defined(DEBUG_QUEUES) + if(HOSTDATA(shpnt)->debug & debug_queues) + printk("i-, "); +#endif + CURRENT_SC = remove_first_SC(&ISSUE_SC); + restore_flags(flags); + +#if defined(DEBUG_INTR) || defined(DEBUG_SELECTION) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_intr|debug_selection|debug_phases)) + printk("issuing command, "); +#endif + CURRENT_SC->SCp.phase = in_selection; + +#if defined(DEBUG_INTR) || defined(DEBUG_SELECTION) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_intr|debug_selection|debug_phases)) + printk("selecting %d, ", CURRENT_SC->target); +#endif + SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->target); + + /* Enable interrupts for SELECTION OUT DONE and SELECTION OUT INITIATED */ + SETPORT(SXFRCTL1, HOSTDATA(shpnt)->parity ? (ENSPCHK|ENSTIMER) : ENSTIMER); + + /* enable interrupts for SELECTION OUT DONE and SELECTION TIME OUT */ + SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0)); + SETPORT(SIMODE1, ENSELTIMO); + + /* Enable SELECTION OUT sequence */ + SETBITS(SCSISEQ, ENSELO | ENAUTOATNO); + + } else { + /* No command we are busy with and no new to issue */ + printk("aha152x: ignoring spurious interrupt, nothing to do\n"); + if(TESTHI(DMACNTRL0, SWINT)) { + printk("aha152x: SWINT is set! Why?\n"); + CLRBITS(DMACNTRL0, SWINT); + } + show_queues(shpnt); + } + +#if defined(DEBUG_RACE) + leave_driver("(selecting) intr"); +#endif + SETBITS(DMACNTRL0, INTEN); + return; + } + + /* the bus is busy with something */ + +#if defined(DEBUG_INTR) + if(HOSTDATA(shpnt)->debug & debug_intr) + disp_ports(shpnt); +#endif + + /* we are waiting for the result of a selection attempt */ + if(CURRENT_SC->SCp.phase & in_selection) { + if(TESTLO(SSTAT1, SELTO)) { + /* no timeout */ + if(TESTHI(SSTAT0, SELDO)) { + /* clear BUS FREE interrupt */ + SETPORT(SSTAT1, CLRBUSFREE); + + /* Disable SELECTION OUT sequence */ + CLRBITS(SCSISEQ, ENSELO|ENAUTOATNO); + + /* Disable SELECTION OUT DONE interrupt */ + CLRBITS(SIMODE0, ENSELDO); + CLRBITS(SIMODE1, ENSELTIMO); + + if(TESTLO(SSTAT0, SELDO)) { + printk("aha152x: passing bus free condition\n"); + +#if defined(DEBUG_RACE) + leave_driver("(passing bus free) intr"); +#endif + SETBITS(DMACNTRL0, INTEN); + + if(CURRENT_SC->SCp.phase & aborted) { + HOSTDATA(shpnt)->abort_result=SCSI_ABORT_ERROR; + HOSTDATA(shpnt)->abortion_complete++; + } + + aha152x_done(shpnt, DID_NO_CONNECT << 16); + + return; + } +#if defined(DEBUG_SELECTION) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_selection|debug_phases)) + printk("SELDO (SELID=%x), ", GETPORT(SELID)); +#endif + + /* selection was done */ + SETPORT(SSTAT0, CLRSELDO); + +#if defined(DEBUG_ABORT) + if((HOSTDATA(shpnt)->debug & debug_abort) && (CURRENT_SC->SCp.phase & aborted)) + printk("(ABORT) target selected, "); +#endif + + CURRENT_SC->SCp.phase &= ~in_selection; + CURRENT_SC->SCp.phase |= in_other; + + ADDMSG(IDENTIFY(HOSTDATA(shpnt)->reconnect,CURRENT_SC->lun)); + + if(!(SYNCRATE&0x80) && HOSTDATA(shpnt)->synchronous) { + ADDMSG(EXTENDED_MESSAGE); + ADDMSG(3); + ADDMSG(EXTENDED_SDTR); + ADDMSG(50); + ADDMSG(8); + + printk("outbound SDTR: "); + print_msg(&MSG(MSGLEN-5)); + + SYNCRATE=0x80; + CURRENT_SC->SCp.phase |= in_sync; + } + +#if defined(DEBUG_RACE) + leave_driver("(SELDO) intr"); +#endif + SETPORT(SCSIRATE, SYNCRATE&0x7f); + + SETPORT(SCSISIG, P_MSGO); + + SETPORT(SIMODE0, 0); + SETPORT(SIMODE1, ENREQINIT|ENBUSFREE); + SETBITS(DMACNTRL0, INTEN); + + return; + } else + aha152x_panic(shpnt, "neither timeout nor selection\007"); + } else { +#if defined(DEBUG_SELECTION) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_selection|debug_phases)) + printk("SELTO, "); +#endif + /* end selection attempt */ + CLRBITS(SCSISEQ, ENSELO|ENAUTOATNO); + + /* timeout */ + SETPORT(SSTAT1, CLRSELTIMO); + + SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0); + SETPORT(SIMODE1, ISSUE_SC ? ENBUSFREE : 0); + SETBITS(DMACNTRL0, INTEN); +#if defined(DEBUG_RACE) + leave_driver("(SELTO) intr"); +#endif + + if(CURRENT_SC->SCp.phase & aborted) { +#if defined(DEBUG_ABORT) + if(HOSTDATA(shpnt)->debug & debug_abort) + printk("(ABORT) selection timeout, "); +#endif + HOSTDATA(shpnt)->abort_result=SCSI_ABORT_ERROR; + HOSTDATA(shpnt)->abortion_complete++; + } + + if(TESTLO(SSTAT0, SELINGO)) + /* ARBITRATION not won */ + aha152x_done(shpnt, DID_BUS_BUSY << 16); + else + /* ARBITRATION won, but SELECTION failed */ + aha152x_done(shpnt, DID_NO_CONNECT << 16); + + return; + } + } + + /* enable interrupt, when target leaves current phase */ + phase = getphase(shpnt); + if(!(phase & ~P_MASK)) /* "real" phase */ + SETPORT(SCSISIG, phase); + SETPORT(SSTAT1, CLRPHASECHG); + CURRENT_SC->SCp.phase = + (CURRENT_SC->SCp.phase & ~((P_MASK|1)<<16)) | (phase << 16); + + /* information transfer phase */ + switch(phase) { + case P_MSGO: /* MESSAGE OUT */ + { + int i, identify=0, abort=0; + +#if defined(DEBUG_INTR) || defined(DEBUG_MSGO) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_intr|debug_msgo|debug_phases)) + printk("MESSAGE OUT, "); +#endif + if(MSGLEN==0) { + ADDMSG(MESSAGE_REJECT); +#if defined(DEBUG_MSGO) + if(HOSTDATA(shpnt)->debug & debug_msgo) + printk("unexpected MESSAGE OUT phase; rejecting, "); +#endif + } + + CLRBITS(SXFRCTL0, ENDMA); + + SETPORT(SIMODE0, 0); + SETPORT(SIMODE1, ENPHASEMIS|ENREQINIT|ENBUSFREE); + + /* wait for data latch to become ready or a phase change */ + while(TESTLO(DMASTAT, INTSTAT)) + barrier(); + +#if defined(DEBUG_MSGO) + if(HOSTDATA(shpnt)->debug & debug_msgo) { + int i; + + printk("messages ("); + for(i=0; i<MSGLEN; i+=print_msg(&MSG(i)), printk(" ")) + ; + printk("), "); + } +#endif + + for(i=0; i<MSGLEN && TESTLO(SSTAT1, PHASEMIS); i++) { +#if defined(DEBUG_MSGO) + if(HOSTDATA(shpnt)->debug & debug_msgo) + printk("%x ", MSG(i)); +#endif + if(i==MSGLEN-1) { + /* Leave MESSAGE OUT after transfer */ + SETPORT(SSTAT1, CLRATNO); + } + + SETPORT(SCSIDAT, MSG(i)); + + make_acklow(shpnt); + getphase(shpnt); + + if(MSG(i)==IDENTIFY(HOSTDATA(shpnt)->reconnect,CURRENT_SC->lun)) + identify++; + + if(MSG(i)==ABORT) + abort++; + + } + + MSGLEN=0; + + if(identify) + CURRENT_SC->SCp.phase |= sent_ident; + + if(abort) { + /* revive abort(); abort() enables interrupts */ + HOSTDATA(shpnt)->abort_result=SCSI_ABORT_SUCCESS; + HOSTDATA(shpnt)->abortion_complete++; + + CURRENT_SC->SCp.phase &= ~(P_MASK<<16); + + /* exit */ + SETBITS(DMACNTRL0, INTEN); +#if defined(DEBUG_RACE) + leave_driver("(ABORT) intr"); +#endif + aha152x_done(shpnt, DID_ABORT<<16); + + return; + } + } + break; + + case P_CMD: /* COMMAND phase */ +#if defined(DEBUG_INTR) || defined(DEBUG_CMD) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_intr|debug_cmd|debug_phases)) + printk("COMMAND, "); +#endif + if(!(CURRENT_SC->SCp.sent_command)) { + int i; + + CLRBITS(SXFRCTL0, ENDMA); + + SETPORT(SIMODE0, 0); + SETPORT(SIMODE1, ENPHASEMIS|ENREQINIT|ENBUSFREE); + + /* wait for data latch to become ready or a phase change */ + while(TESTLO(DMASTAT, INTSTAT)) + barrier(); + + for(i=0; i<CURRENT_SC->cmd_len && TESTLO(SSTAT1, PHASEMIS); i++) { + SETPORT(SCSIDAT, CURRENT_SC->cmnd[i]); + + make_acklow(shpnt); + getphase(shpnt); + } + + if(i<CURRENT_SC->cmd_len && TESTHI(SSTAT1, PHASEMIS)) + aha152x_panic(shpnt, "target left COMMAND"); + + CURRENT_SC->SCp.sent_command++; + } else + aha152x_panic(shpnt, "Nothing to send while in COMMAND"); + break; + + case P_MSGI: /* MESSAGE IN phase */ + { + int start_sync=0; + +#if defined(DEBUG_INTR) || defined(DEBUG_MSGI) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_intr|debug_msgi|debug_phases)) + printk("MESSAGE IN, "); +#endif + SETPORT(SXFRCTL0, CH1); + + SETPORT(SIMODE0, 0); + SETPORT(SIMODE1, ENBUSFREE); + + while(phase == P_MSGI) { + CURRENT_SC->SCp.Message = GETPORT(SCSIDAT); + switch(CURRENT_SC->SCp.Message) { + case DISCONNECT: +#if defined(DEBUG_MSGI) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_msgi|debug_phases)) + printk("target disconnected, "); +#endif + CURRENT_SC->SCp.Message = 0; + CURRENT_SC->SCp.phase |= disconnected; + if(!HOSTDATA(shpnt)->reconnect) + aha152x_panic(shpnt, "target was not allowed to disconnect"); + + break; + + case COMMAND_COMPLETE: +#if defined(DEBUG_MSGI) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_msgi|debug_phases)) + printk("inbound message (COMMAND COMPLETE), "); +#endif + done++; + break; + + case MESSAGE_REJECT: + if(CURRENT_SC->SCp.phase & in_sync) { + CURRENT_SC->SCp.phase &= ~in_sync; + SYNCRATE=0x80; + printk("synchronous rejected, "); + } else + printk("inbound message (MESSAGE REJECT), "); +#if defined(DEBUG_MSGI) + if(HOSTDATA(shpnt)->debug & debug_msgi) + printk("inbound message (MESSAGE REJECT), "); +#endif + break; + + case SAVE_POINTERS: +#if defined(DEBUG_MSGI) + if(HOSTDATA(shpnt)->debug & debug_msgi) + printk("inbound message (SAVE DATA POINTERS), "); +#endif + break; + + case RESTORE_POINTERS: +#if defined(DEBUG_MSGI) + if(HOSTDATA(shpnt)->debug & debug_msgi) + printk("inbound message (RESTORE DATA POINTERS), "); +#endif + break; + + case EXTENDED_MESSAGE: + { + char buffer[16]; + int i; + +#if defined(DEBUG_MSGI) + if(HOSTDATA(shpnt)->debug & debug_msgi) + printk("inbound message (EXTENDED MESSAGE), "); +#endif + make_acklow(shpnt); + if(getphase(shpnt)!=P_MSGI) + break; + + buffer[0]=EXTENDED_MESSAGE; + buffer[1]=GETPORT(SCSIDAT); + + for(i=0; i<buffer[1] && + (make_acklow(shpnt), getphase(shpnt)==P_MSGI); i++) + buffer[2+i]=GETPORT(SCSIDAT); + +#if defined(DEBUG_MSGI) + if(HOSTDATA(shpnt)->debug & debug_msgi) + print_msg(buffer); +#endif + + switch(buffer [2]) { + case EXTENDED_SDTR: + { + long ticks; + + if(buffer[1]!=3) + aha152x_panic(shpnt, "SDTR message length != 3"); + + if(!HOSTDATA(shpnt)->synchronous) + break; + + printk("inbound SDTR: "); print_msg(buffer); + + ticks=(buffer[3]*4+49)/50; + + if(CURRENT_SC->SCp.phase & in_sync) { + /* we initiated SDTR */ + if(ticks>9 || buffer[4]<1 || buffer[4]>8) + aha152x_panic(shpnt, "received SDTR invalid"); + + SYNCRATE |= ((ticks-2)<<4) + buffer[4]; + } else if(ticks<=9 && buffer[4]>=1) { + if(buffer[4]>8) + buffer[4]=8; + + ADDMSG(EXTENDED_MESSAGE); + ADDMSG(3); + ADDMSG(EXTENDED_SDTR); + if(ticks<4) { + ticks=4; + ADDMSG(50); + } else + ADDMSG(buffer[3]); + + ADDMSG(buffer[4]); + + printk("outbound SDTR: "); + print_msg(&MSG(MSGLEN-5)); + + CURRENT_SC->SCp.phase |= in_sync; + + SYNCRATE |= ((ticks-2)<<4) + buffer[4]; + + start_sync++; + } else { + /* requested SDTR is too slow, do it asynchronously */ + ADDMSG(MESSAGE_REJECT); + SYNCRATE = 0; + } + + SETPORT(SCSIRATE, SYNCRATE&0x7f); + } + break; + + case EXTENDED_MODIFY_DATA_POINTER: + case EXTENDED_EXTENDED_IDENTIFY: + case EXTENDED_WDTR: + default: + ADDMSG(MESSAGE_REJECT); + break; + } + } + break; + + default: + printk("unsupported inbound message %x, ", CURRENT_SC->SCp.Message); + break; + + } + + make_acklow(shpnt); + phase=getphase(shpnt); + } + + if(start_sync) + CURRENT_SC->SCp.phase |= in_sync; + else + CURRENT_SC->SCp.phase &= ~in_sync; + + if(MSGLEN>0) + SETPORT(SCSISIG, P_MSGI|ATNO); + + /* clear SCSI fifo on BUSFREE */ + if(phase==P_BUSFREE) + SETPORT(SXFRCTL0, CH1|CLRCH1); + + if(CURRENT_SC->SCp.phase & disconnected) { + save_flags(flags); + cli(); +#if defined(DEBUG_QUEUES) + if(HOSTDATA(shpnt)->debug & debug_queues) + printk("d+, "); +#endif + append_SC(&DISCONNECTED_SC, CURRENT_SC); + CURRENT_SC->SCp.phase |= 1<<16; + CURRENT_SC = NULL; + restore_flags(flags); + + SETBITS(SCSISEQ, ENRESELI); + + SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0); + SETPORT(SIMODE1, ISSUE_SC ? ENBUSFREE : 0); + + SETBITS(DMACNTRL0, INTEN); + + return; + } + } + break; + + case P_STATUS: /* STATUS IN phase */ +#if defined(DEBUG_STATUS) || defined(DEBUG_INTR) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_status|debug_intr|debug_phases)) + printk("STATUS, "); +#endif + SETPORT(SXFRCTL0, CH1); + + SETPORT(SIMODE0, 0); + SETPORT(SIMODE1, ENREQINIT|ENBUSFREE); + + if(TESTHI(SSTAT1, PHASEMIS)) + printk("aha152x: passing STATUS phase"); + + CURRENT_SC->SCp.Status = GETPORT(SCSIBUS); + make_acklow(shpnt); + getphase(shpnt); + +#if defined(DEBUG_STATUS) + if(HOSTDATA(shpnt)->debug & debug_status) { + printk("inbound status "); + print_status(CURRENT_SC->SCp.Status); + printk(", "); + } +#endif + break; + + case P_DATAI: /* DATA IN phase */ + { + int fifodata, data_count, done; + +#if defined(DEBUG_DATAI) || defined(DEBUG_INTR) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_datai|debug_intr|debug_phases)) + printk("DATA IN, "); +#endif + +#if 0 + if(GETPORT(FIFOSTAT) || GETPORT(SSTAT2) & (SFULL|SFCNT)) + printk("aha152x: P_DATAI: %d(%d) bytes left in FIFO, resetting\n", + GETPORT(FIFOSTAT), GETPORT(SSTAT2) & (SFULL|SFCNT)); +#endif + + /* reset host fifo */ + SETPORT(DMACNTRL0, RSTFIFO); + SETPORT(DMACNTRL0, RSTFIFO|ENDMA); + + SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN); + + SETPORT(SIMODE0, 0); + SETPORT(SIMODE1, ENPHASEMIS|ENBUSFREE); + + /* done is set when the FIFO is empty after the target left DATA IN */ + done=0; + + /* while the target stays in DATA to transfer data */ + while (!done) { +#if defined(DEBUG_DATAI) + if(HOSTDATA(shpnt)->debug & debug_datai) + printk("expecting data, "); +#endif + /* wait for PHASEMIS or full FIFO */ + while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) + barrier(); + +#if defined(DEBUG_DATAI) + if(HOSTDATA(shpnt)->debug & debug_datai) + printk("ok, "); +#endif + + if(TESTHI(DMASTAT, DFIFOFULL)) + fifodata=GETPORT(FIFOSTAT); + else { + /* wait for SCSI fifo to get empty */ + while(TESTLO(SSTAT2, SEMPTY)) + barrier(); + + /* rest of data in FIFO */ + fifodata=GETPORT(FIFOSTAT); +#if defined(DEBUG_DATAI) + if(HOSTDATA(shpnt)->debug & debug_datai) + printk("last transfer, "); +#endif + done=1; + } + +#if defined(DEBUG_DATAI) + if(HOSTDATA(shpnt)->debug & debug_datai) + printk("fifodata=%d, ", fifodata); +#endif + + while(fifodata && CURRENT_SC->SCp.this_residual) { + data_count=fifodata; + + /* limit data transfer to size of first sg buffer */ + if(data_count > CURRENT_SC->SCp.this_residual) + data_count = CURRENT_SC->SCp.this_residual; + + fifodata -= data_count; + +#if defined(DEBUG_DATAI) + if(HOSTDATA(shpnt)->debug & debug_datai) + printk("data_count=%d, ", data_count); +#endif + + if(data_count&1) { + /* get a single byte in byte mode */ + SETBITS(DMACNTRL0, _8BIT); + *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT); + CURRENT_SC->SCp.this_residual--; + } + + if(data_count>1) { + CLRBITS(DMACNTRL0, _8BIT); + data_count >>= 1; /* Number of words */ + insw(DATAPORT, CURRENT_SC->SCp.ptr, data_count); +#if defined(DEBUG_DATAI) + if(HOSTDATA(shpnt)->debug & debug_datai) + /* show what comes with the last transfer */ + if(done) { +#if 0 + int i; + unsigned char *data; +#endif + + printk("data on last transfer (%d bytes) ", + 2*data_count); +#if 0 + printk("data on last transfer (%d bytes: ", + 2*data_count); + data = (unsigned char *) CURRENT_SC->SCp.ptr; + for(i=0; i<2*data_count; i++) + printk("%2x ", *data++); + printk("), "); +#endif + } +#endif + CURRENT_SC->SCp.ptr += 2 * data_count; + CURRENT_SC->SCp.this_residual -= 2 * data_count; + } + + /* if this buffer is full and there are more buffers left */ + if(!CURRENT_SC->SCp.this_residual && + CURRENT_SC->SCp.buffers_residual) { + /* advance to next buffer */ + CURRENT_SC->SCp.buffers_residual--; + CURRENT_SC->SCp.buffer++; + CURRENT_SC->SCp.ptr = CURRENT_SC->SCp.buffer->address; + CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length; + } + } + + /* + * FIFO should be empty + */ + if(fifodata>0) { + printk("aha152x: more data than expected (%d bytes)\n", + GETPORT(FIFOSTAT)); + SETBITS(DMACNTRL0, _8BIT); + printk("aha152x: data ("); + while(fifodata--) + printk("%2x ", GETPORT(DATAPORT)); + printk(")\n"); + } + +#if defined(DEBUG_DATAI) + if(HOSTDATA(shpnt)->debug & debug_datai) + if(!fifodata) + printk("fifo empty, "); + else + printk("something left in fifo, "); +#endif + } + +#if defined(DEBUG_DATAI) + if((HOSTDATA(shpnt)->debug & debug_datai) && + (CURRENT_SC->SCp.buffers_residual || + CURRENT_SC->SCp.this_residual)) + printk("left buffers (buffers=%d, bytes=%d), ", + CURRENT_SC->SCp.buffers_residual, CURRENT_SC->SCp.this_residual); +#endif + /* transfer can be considered ended, when SCSIEN reads back zero */ + CLRBITS(SXFRCTL0, SCSIEN|DMAEN); + while(TESTHI(SXFRCTL0, SCSIEN)) + barrier(); + CLRBITS(DMACNTRL0, ENDMA); + +#if defined(DEBUG_DATAI) || defined(DEBUG_INTR) + if(HOSTDATA(shpnt)->debug & (debug_datai|debug_intr)) + printk("got %d bytes, ", GETSTCNT()); +#endif + + CURRENT_SC->SCp.have_data_in++; + } + break; + + case P_DATAO: /* DATA OUT phase */ + { + int data_count; + +#if defined(DEBUG_DATAO) || defined(DEBUG_INTR) || defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & (debug_datao|debug_intr|debug_phases)) + printk("DATA OUT, "); +#endif +#if defined(DEBUG_DATAO) + if(HOSTDATA(shpnt)->debug & debug_datao) + printk("got data to send (bytes=%d, buffers=%d), ", + CURRENT_SC->SCp.this_residual, + CURRENT_SC->SCp.buffers_residual); +#endif + + if(GETPORT(FIFOSTAT) || GETPORT(SSTAT2) & (SFULL|SFCNT)) { + printk("%d(%d) left in FIFO, ", + GETPORT(FIFOSTAT), GETPORT(SSTAT2) & (SFULL|SFCNT)); + aha152x_panic(shpnt, "FIFO should be empty"); + } + + SETPORT(SXFRCTL0, CH1|CLRSTCNT|CLRCH1); + SETPORT(SXFRCTL0, SCSIEN|DMAEN|CH1); + + SETPORT(DMACNTRL0, WRITE_READ|RSTFIFO); + SETPORT(DMACNTRL0, ENDMA|WRITE_READ); + + SETPORT(SIMODE0, 0); + SETPORT(SIMODE1, ENPHASEMIS|ENBUSFREE); + + /* while current buffer is not empty or + there are more buffers to transfer */ + while(TESTLO(SSTAT1, PHASEMIS) && + (CURRENT_SC->SCp.this_residual || + CURRENT_SC->SCp.buffers_residual)) { +#if defined(DEBUG_DATAO) + if(HOSTDATA(shpnt)->debug & debug_datao) + printk("sending data (left: bytes=%d, buffers=%d), waiting, ", + CURRENT_SC->SCp.this_residual, + CURRENT_SC->SCp.buffers_residual); +#endif + /* transfer rest of buffer, but max. 128 byte */ + data_count = + CURRENT_SC->SCp.this_residual > 128 ? + 128 : CURRENT_SC->SCp.this_residual ; + +#if defined(DEBUG_DATAO) + if(HOSTDATA(shpnt)->debug & debug_datao) + printk("data_count=%d, ", data_count); +#endif + + if(data_count&1) { + /* put a single byte in byte mode */ + SETBITS(DMACNTRL0, _8BIT); + SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++); + CURRENT_SC->SCp.this_residual--; + } + if(data_count>1) { + CLRBITS(DMACNTRL0, _8BIT); + data_count >>= 1; /* number of words */ + outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count); + CURRENT_SC->SCp.ptr += 2 * data_count; + CURRENT_SC->SCp.this_residual -= 2 * data_count; + } + + /* wait for FIFO to get empty */ + while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) + barrier(); + +#if defined(DEBUG_DATAO) + if(HOSTDATA(shpnt)->debug & debug_datao) + printk("fifo (%d bytes), transfered (%d bytes), ", + GETPORT(FIFOSTAT), GETSTCNT()); +#endif + + /* if this buffer is empty and there are more buffers left */ + if(TESTLO(SSTAT1, PHASEMIS) && + !CURRENT_SC->SCp.this_residual && + CURRENT_SC->SCp.buffers_residual) { + /* advance to next buffer */ + CURRENT_SC->SCp.buffers_residual--; + CURRENT_SC->SCp.buffer++; + CURRENT_SC->SCp.ptr = CURRENT_SC->SCp.buffer->address; + CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length; + } + } + + if(CURRENT_SC->SCp.this_residual || CURRENT_SC->SCp.buffers_residual) { + /* target leaves DATA OUT for an other phase (perhaps disconnect) */ + + /* data in fifos has to be resend */ + data_count = GETPORT(SSTAT2) & (SFULL|SFCNT); + + data_count += GETPORT(FIFOSTAT) ; + CURRENT_SC->SCp.ptr -= data_count; + CURRENT_SC->SCp.this_residual += data_count; +#if defined(DEBUG_DATAO) + if(HOSTDATA(shpnt)->debug & debug_datao) + printk("left data (bytes=%d, buffers=%d), fifos (bytes=%d), " + "transfer incomplete, resetting fifo, ", + CURRENT_SC->SCp.this_residual, + CURRENT_SC->SCp.buffers_residual, + data_count); +#endif + SETPORT(DMACNTRL0, WRITE_READ|RSTFIFO); + CLRBITS(SXFRCTL0, SCSIEN|DMAEN); + CLRBITS(DMACNTRL0, ENDMA); + } else { +#if defined(DEBUG_DATAO) + if(HOSTDATA(shpnt)->debug & debug_datao) + printk("waiting for SCSI fifo to get empty, "); +#endif + /* wait for SCSI fifo to get empty */ + while(TESTLO(SSTAT2, SEMPTY)) + barrier(); +#if defined(DEBUG_DATAO) + if(HOSTDATA(shpnt)->debug & debug_datao) + printk("ok, left data (bytes=%d, buffers=%d) ", + CURRENT_SC->SCp.this_residual, + CURRENT_SC->SCp.buffers_residual); +#endif + CLRBITS(SXFRCTL0, SCSIEN|DMAEN); + + /* transfer can be considered ended, when SCSIEN reads back zero */ + while(TESTHI(SXFRCTL0, SCSIEN)) + barrier(); + + CLRBITS(DMACNTRL0, ENDMA); + } + +#if defined(DEBUG_DATAO) || defined(DEBUG_INTR) + if(HOSTDATA(shpnt)->debug & (debug_datao|debug_intr)) + printk("sent %d data bytes, ", GETSTCNT()); +#endif + } + break; + + case P_BUSFREE: /* BUSFREE */ +#if defined(DEBUG_RACE) + leave_driver("(BUSFREE) intr"); +#endif +#if defined(DEBUG_PHASES) + if(HOSTDATA(shpnt)->debug & debug_phases) + printk("unexpected BUS FREE, "); +#endif + CURRENT_SC->SCp.phase &= ~(P_MASK<<16); + + aha152x_done(shpnt, DID_ERROR << 16); /* Don't know any better */ + return; + break; + + case P_PARITY: /* parity error in DATA phase */ +#if defined(DEBUG_RACE) + leave_driver("(DID_PARITY) intr"); +#endif + printk("PARITY error in DATA phase, "); + + CURRENT_SC->SCp.phase &= ~(P_MASK<<16); + + SETBITS(DMACNTRL0, INTEN); + aha152x_done(shpnt, DID_PARITY << 16); + return; + break; + + default: + printk("aha152x: unexpected phase\n"); + break; + } + + if(done) { +#if defined(DEBUG_INTR) + if(HOSTDATA(shpnt)->debug & debug_intr) + printk("command done.\n"); +#endif +#if defined(DEBUG_RACE) + leave_driver("(done) intr"); +#endif + + SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0); + SETPORT(SIMODE1, ISSUE_SC ? ENBUSFREE : 0); + SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0); + + SETBITS(DMACNTRL0, INTEN); + + aha152x_done(shpnt, + (CURRENT_SC->SCp.Status & 0xff) + | ((CURRENT_SC->SCp.Message & 0xff) << 8) + | (DID_OK << 16)); + +#if defined(DEBUG_RACE) + printk("done returned (DID_OK: Status=%x; Message=%x).\n", + CURRENT_SC->SCp.Status, CURRENT_SC->SCp.Message); +#endif + return; + } + + if(CURRENT_SC) + CURRENT_SC->SCp.phase |= 1<<16; + + SETPORT(SIMODE0, 0); + SETPORT(SIMODE1, ENPHASEMIS|ENBUSFREE); +#if defined(DEBUG_INTR) + if(HOSTDATA(shpnt)->debug & debug_intr) + disp_enintr(shpnt); +#endif +#if defined(DEBUG_RACE) + leave_driver("(PHASEEND) intr"); +#endif + + SETBITS(DMACNTRL0, INTEN); + return; +} + +/* + * Dump the current driver status and panic... + */ +static void aha152x_panic(struct Scsi_Host *shpnt, char *msg) +{ + printk("\naha152x: %s\n", msg); + show_queues(shpnt); + panic("aha152x panic"); +} + +/* + * Display registers of AIC-6260 + */ +static void disp_ports(struct Scsi_Host *shpnt) +{ +#ifdef DEBUG_AHA152X + int s; + +#ifdef SKIP_PORTS + if(HOSTDATA(shpnt)->debug & debug_skipports) + return; +#endif + + printk("\n%s: ", CURRENT_SC ? "on bus" : "waiting"); + + s=GETPORT(SCSISEQ); + printk("SCSISEQ ("); + if(s & TEMODEO) printk("TARGET MODE "); + if(s & ENSELO) printk("SELO "); + if(s & ENSELI) printk("SELI "); + if(s & ENRESELI) printk("RESELI "); + if(s & ENAUTOATNO) printk("AUTOATNO "); + if(s & ENAUTOATNI) printk("AUTOATNI "); + if(s & ENAUTOATNP) printk("AUTOATNP "); + if(s & SCSIRSTO) printk("SCSIRSTO "); + printk(");"); + + printk(" SCSISIG ("); + s=GETPORT(SCSISIG); + switch(s & P_MASK) { + case P_DATAO: + printk("DATA OUT"); + break; + case P_DATAI: + printk("DATA IN"); + break; + case P_CMD: + printk("COMMAND"); + break; + case P_STATUS: + printk("STATUS"); + break; + case P_MSGO: + printk("MESSAGE OUT"); + break; + case P_MSGI: + printk("MESSAGE IN"); + break; + default: + printk("*illegal*"); + break; + } + + printk("); "); + + printk("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo"); + + printk("SSTAT ("); + s=GETPORT(SSTAT0); + if(s & TARGET) printk("TARGET "); + if(s & SELDO) printk("SELDO "); + if(s & SELDI) printk("SELDI "); + if(s & SELINGO) printk("SELINGO "); + if(s & SWRAP) printk("SWRAP "); + if(s & SDONE) printk("SDONE "); + if(s & SPIORDY) printk("SPIORDY "); + if(s & DMADONE) printk("DMADONE "); + + s=GETPORT(SSTAT1); + if(s & SELTO) printk("SELTO "); + if(s & ATNTARG) printk("ATNTARG "); + if(s & SCSIRSTI) printk("SCSIRSTI "); + if(s & PHASEMIS) printk("PHASEMIS "); + if(s & BUSFREE) printk("BUSFREE "); + if(s & SCSIPERR) printk("SCSIPERR "); + if(s & PHASECHG) printk("PHASECHG "); + if(s & REQINIT) printk("REQINIT "); + printk("); "); + + + printk("SSTAT ("); + + s=GETPORT(SSTAT0) & GETPORT(SIMODE0); + + if(s & TARGET) printk("TARGET "); + if(s & SELDO) printk("SELDO "); + if(s & SELDI) printk("SELDI "); + if(s & SELINGO) printk("SELINGO "); + if(s & SWRAP) printk("SWRAP "); + if(s & SDONE) printk("SDONE "); + if(s & SPIORDY) printk("SPIORDY "); + if(s & DMADONE) printk("DMADONE "); + + s=GETPORT(SSTAT1) & GETPORT(SIMODE1); + + if(s & SELTO) printk("SELTO "); + if(s & ATNTARG) printk("ATNTARG "); + if(s & SCSIRSTI) printk("SCSIRSTI "); + if(s & PHASEMIS) printk("PHASEMIS "); + if(s & BUSFREE) printk("BUSFREE "); + if(s & SCSIPERR) printk("SCSIPERR "); + if(s & PHASECHG) printk("PHASECHG "); + if(s & REQINIT) printk("REQINIT "); + printk("); "); + + printk("SXFRCTL0 ("); + + s=GETPORT(SXFRCTL0); + if(s & SCSIEN) printk("SCSIEN "); + if(s & DMAEN) printk("DMAEN "); + if(s & CH1) printk("CH1 "); + if(s & CLRSTCNT) printk("CLRSTCNT "); + if(s & SPIOEN) printk("SPIOEN "); + if(s & CLRCH1) printk("CLRCH1 "); + printk("); "); + + printk("SIGNAL ("); + + s=GETPORT(SCSISIG); + if(s & ATNI) printk("ATNI "); + if(s & SELI) printk("SELI "); + if(s & BSYI) printk("BSYI "); + if(s & REQI) printk("REQI "); + if(s & ACKI) printk("ACKI "); + printk("); "); + + printk("SELID (%02x), ", GETPORT(SELID)); + + printk("SSTAT2 ("); + + s=GETPORT(SSTAT2); + if(s & SOFFSET) printk("SOFFSET "); + if(s & SEMPTY) printk("SEMPTY "); + if(s & SFULL) printk("SFULL "); + printk("); SFCNT (%d); ", s & (SFULL|SFCNT)); + + s=GETPORT(SSTAT3); + printk("SCSICNT (%d), OFFCNT(%d), ", (s&0xf0)>>4, s&0x0f); + + printk("SSTAT4 ("); + s=GETPORT(SSTAT4); + if(s & SYNCERR) printk("SYNCERR "); + if(s & FWERR) printk("FWERR "); + if(s & FRERR) printk("FRERR "); + printk("); "); + + printk("DMACNTRL0 ("); + s=GETPORT(DMACNTRL0); + printk("%s ", s & _8BIT ? "8BIT" : "16BIT"); + printk("%s ", s & DMA ? "DMA" : "PIO" ); + printk("%s ", s & WRITE_READ ? "WRITE" : "READ" ); + if(s & ENDMA) printk("ENDMA "); + if(s & INTEN) printk("INTEN "); + if(s & RSTFIFO) printk("RSTFIFO "); + if(s & SWINT) printk("SWINT "); + printk("); "); + + printk("DMASTAT ("); + s=GETPORT(DMASTAT); + if(s & ATDONE) printk("ATDONE "); + if(s & WORDRDY) printk("WORDRDY "); + if(s & DFIFOFULL) printk("DFIFOFULL "); + if(s & DFIFOEMP) printk("DFIFOEMP "); + printk(")"); + + printk("\n"); +#endif +} + +/* + * display enabled interrupts + */ +static void disp_enintr(struct Scsi_Host *shpnt) +{ + int s; + + printk("enabled interrupts ("); + + s=GETPORT(SIMODE0); + if(s & ENSELDO) printk("ENSELDO "); + if(s & ENSELDI) printk("ENSELDI "); + if(s & ENSELINGO) printk("ENSELINGO "); + if(s & ENSWRAP) printk("ENSWRAP "); + if(s & ENSDONE) printk("ENSDONE "); + if(s & ENSPIORDY) printk("ENSPIORDY "); + if(s & ENDMADONE) printk("ENDMADONE "); + + s=GETPORT(SIMODE1); + if(s & ENSELTIMO) printk("ENSELTIMO "); + if(s & ENATNTARG) printk("ENATNTARG "); + if(s & ENPHASEMIS) printk("ENPHASEMIS "); + if(s & ENBUSFREE) printk("ENBUSFREE "); + if(s & ENSCSIPERR) printk("ENSCSIPERR "); + if(s & ENPHASECHG) printk("ENPHASECHG "); + if(s & ENREQINIT) printk("ENREQINIT "); + printk(")\n"); +} + +#if defined(DEBUG_RACE) + +static const char *should_leave; +static int in_driver=0; + +/* + * Only one routine can be in the driver at once. + */ +static void enter_driver(const char *func) +{ + unsigned long flags; + + save_flags(flags); + cli(); + printk("aha152x: entering %s() (%x)\n", func, jiffies); + if(in_driver) { + printk("%s should leave first.\n", should_leave); + panic("aha152x: already in driver\n"); + } + + in_driver++; + should_leave=func; + restore_flags(flags); +} + +static void leave_driver(const char *func) +{ + unsigned long flags; + + save_flags(flags); + cli(); + printk("\naha152x: leaving %s() (%x)\n", func, jiffies); + if(!in_driver) { + printk("aha152x: %s already left.\n", should_leave); + panic("aha152x: %s already left driver.\n"); + } + + in_driver--; + should_leave=func; + restore_flags(flags); +} +#endif + +/* + * Show the command data of a command + */ +static void show_command(Scsi_Cmnd *ptr) +{ + printk("0x%08x: target=%d; lun=%d; cmnd=(", + (unsigned int) ptr, ptr->target, ptr->lun); + + print_command(ptr->cmnd); + + printk("); residual=%d; buffers=%d; phase |", + ptr->SCp.this_residual, ptr->SCp.buffers_residual); + + if(ptr->SCp.phase & not_issued ) printk("not issued|"); + if(ptr->SCp.phase & in_selection) printk("in selection|"); + if(ptr->SCp.phase & disconnected) printk("disconnected|"); + if(ptr->SCp.phase & aborted ) printk("aborted|"); + if(ptr->SCp.phase & sent_ident ) printk("send_ident|"); + if(ptr->SCp.phase & in_other) { + printk("; in other("); + switch((ptr->SCp.phase >> 16) & P_MASK) { + case P_DATAO: + printk("DATA OUT"); + break; + case P_DATAI: + printk("DATA IN"); + break; + case P_CMD: + printk("COMMAND"); + break; + case P_STATUS: + printk("STATUS"); + break; + case P_MSGO: + printk("MESSAGE OUT"); + break; + case P_MSGI: + printk("MESSAGE IN"); + break; + default: + printk("*illegal*"); + break; + } + printk(")"); + if(ptr->SCp.phase & (1<<16)) + printk("; phaseend"); + } + printk("; next=0x%08x\n", (unsigned int) ptr->host_scribble); +} + +/* + * Dump the queued data + */ +static void show_queues(struct Scsi_Host *shpnt) +{ + unsigned long flags; + Scsi_Cmnd *ptr; + + save_flags(flags); + cli(); + printk("QUEUE STATUS:\nissue_SC:\n"); + for(ptr=ISSUE_SC; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) + show_command(ptr); + + printk("current_SC:\n"); + if(CURRENT_SC) + show_command(CURRENT_SC); + else + printk("none\n"); + + printk("disconnected_SC:\n"); + for(ptr=DISCONNECTED_SC; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) + show_command(ptr); + + disp_ports(shpnt); + disp_enintr(shpnt); + restore_flags(flags); +} + +int aha152x_set_info(char *buffer, int length, struct Scsi_Host *shpnt) +{ + return(-ENOSYS); /* Currently this is a no-op */ +} + +#undef SPRINTF +#define SPRINTF(args...) pos += sprintf(pos, ## args) + +static int get_command(char *pos, Scsi_Cmnd *ptr) +{ + char *start = pos; + int i; + + SPRINTF("0x%08x: target=%d; lun=%d; cmnd=( ", + (unsigned int) ptr, ptr->target, ptr->lun); + + for(i=0; i<COMMAND_SIZE(ptr->cmnd[0]); i++) + SPRINTF("0x%02x ", ptr->cmnd[i]); + + SPRINTF("); residual=%d; buffers=%d; phase |", + ptr->SCp.this_residual, ptr->SCp.buffers_residual); + + if(ptr->SCp.phase & not_issued ) SPRINTF("not issued|"); + if(ptr->SCp.phase & in_selection) SPRINTF("in selection|"); + if(ptr->SCp.phase & disconnected) SPRINTF("disconnected|"); + if(ptr->SCp.phase & aborted ) SPRINTF("aborted|"); + if(ptr->SCp.phase & sent_ident ) SPRINTF("send_ident|"); + if(ptr->SCp.phase & in_other) { + SPRINTF("; in other("); + switch((ptr->SCp.phase >> 16) & P_MASK) { + case P_DATAO: + SPRINTF("DATA OUT"); + break; + case P_DATAI: + SPRINTF("DATA IN"); + break; + case P_CMD: + SPRINTF("COMMAND"); + break; + case P_STATUS: + SPRINTF("STATUS"); + break; + case P_MSGO: + SPRINTF("MESSAGE OUT"); + break; + case P_MSGI: + SPRINTF("MESSAGE IN"); + break; + default: + SPRINTF("*illegal*"); + break; + } + SPRINTF(")"); + if(ptr->SCp.phase & (1<<16)) + SPRINTF("; phaseend"); + } + SPRINTF("; next=0x%08x\n", (unsigned int) ptr->host_scribble); + + return(pos-start); +} + +static int get_ports(struct Scsi_Host *shpnt, char *pos) +{ + char *start = pos; + int s; + +#ifdef SKIP_PORTS + if(HOSTDATA(shpnt)->debug & debug_skipports) + return; +#endif + + SPRINTF("\n%s: ", CURRENT_SC ? "on bus" : "waiting"); + + s=GETPORT(SCSISEQ); + SPRINTF("SCSISEQ ("); + if(s & TEMODEO) SPRINTF("TARGET MODE "); + if(s & ENSELO) SPRINTF("SELO "); + if(s & ENSELI) SPRINTF("SELI "); + if(s & ENRESELI) SPRINTF("RESELI "); + if(s & ENAUTOATNO) SPRINTF("AUTOATNO "); + if(s & ENAUTOATNI) SPRINTF("AUTOATNI "); + if(s & ENAUTOATNP) SPRINTF("AUTOATNP "); + if(s & SCSIRSTO) SPRINTF("SCSIRSTO "); + SPRINTF(");"); + + SPRINTF(" SCSISIG ("); + s=GETPORT(SCSISIG); + switch(s & P_MASK) { + case P_DATAO: + SPRINTF("DATA OUT"); + break; + case P_DATAI: + SPRINTF("DATA IN"); + break; + case P_CMD: + SPRINTF("COMMAND"); + break; + case P_STATUS: + SPRINTF("STATUS"); + break; + case P_MSGO: + SPRINTF("MESSAGE OUT"); + break; + case P_MSGI: + SPRINTF("MESSAGE IN"); + break; + default: + SPRINTF("*illegal*"); + break; + } + + SPRINTF("); "); + + SPRINTF("INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo"); + + SPRINTF("SSTAT ("); + s=GETPORT(SSTAT0); + if(s & TARGET) SPRINTF("TARGET "); + if(s & SELDO) SPRINTF("SELDO "); + if(s & SELDI) SPRINTF("SELDI "); + if(s & SELINGO) SPRINTF("SELINGO "); + if(s & SWRAP) SPRINTF("SWRAP "); + if(s & SDONE) SPRINTF("SDONE "); + if(s & SPIORDY) SPRINTF("SPIORDY "); + if(s & DMADONE) SPRINTF("DMADONE "); + + s=GETPORT(SSTAT1); + if(s & SELTO) SPRINTF("SELTO "); + if(s & ATNTARG) SPRINTF("ATNTARG "); + if(s & SCSIRSTI) SPRINTF("SCSIRSTI "); + if(s & PHASEMIS) SPRINTF("PHASEMIS "); + if(s & BUSFREE) SPRINTF("BUSFREE "); + if(s & SCSIPERR) SPRINTF("SCSIPERR "); + if(s & PHASECHG) SPRINTF("PHASECHG "); + if(s & REQINIT) SPRINTF("REQINIT "); + SPRINTF("); "); + + + SPRINTF("SSTAT ("); + + s=GETPORT(SSTAT0) & GETPORT(SIMODE0); + + if(s & TARGET) SPRINTF("TARGET "); + if(s & SELDO) SPRINTF("SELDO "); + if(s & SELDI) SPRINTF("SELDI "); + if(s & SELINGO) SPRINTF("SELINGO "); + if(s & SWRAP) SPRINTF("SWRAP "); + if(s & SDONE) SPRINTF("SDONE "); + if(s & SPIORDY) SPRINTF("SPIORDY "); + if(s & DMADONE) SPRINTF("DMADONE "); + + s=GETPORT(SSTAT1) & GETPORT(SIMODE1); + + if(s & SELTO) SPRINTF("SELTO "); + if(s & ATNTARG) SPRINTF("ATNTARG "); + if(s & SCSIRSTI) SPRINTF("SCSIRSTI "); + if(s & PHASEMIS) SPRINTF("PHASEMIS "); + if(s & BUSFREE) SPRINTF("BUSFREE "); + if(s & SCSIPERR) SPRINTF("SCSIPERR "); + if(s & PHASECHG) SPRINTF("PHASECHG "); + if(s & REQINIT) SPRINTF("REQINIT "); + SPRINTF("); "); + + SPRINTF("SXFRCTL0 ("); + + s=GETPORT(SXFRCTL0); + if(s & SCSIEN) SPRINTF("SCSIEN "); + if(s & DMAEN) SPRINTF("DMAEN "); + if(s & CH1) SPRINTF("CH1 "); + if(s & CLRSTCNT) SPRINTF("CLRSTCNT "); + if(s & SPIOEN) SPRINTF("SPIOEN "); + if(s & CLRCH1) SPRINTF("CLRCH1 "); + SPRINTF("); "); + + SPRINTF("SIGNAL ("); + + s=GETPORT(SCSISIG); + if(s & ATNI) SPRINTF("ATNI "); + if(s & SELI) SPRINTF("SELI "); + if(s & BSYI) SPRINTF("BSYI "); + if(s & REQI) SPRINTF("REQI "); + if(s & ACKI) SPRINTF("ACKI "); + SPRINTF("); "); + + SPRINTF("SELID (%02x), ", GETPORT(SELID)); + + SPRINTF("SSTAT2 ("); + + s=GETPORT(SSTAT2); + if(s & SOFFSET) SPRINTF("SOFFSET "); + if(s & SEMPTY) SPRINTF("SEMPTY "); + if(s & SFULL) SPRINTF("SFULL "); + SPRINTF("); SFCNT (%d); ", s & (SFULL|SFCNT)); + + s=GETPORT(SSTAT3); + SPRINTF("SCSICNT (%d), OFFCNT(%d), ", (s&0xf0)>>4, s&0x0f); + + SPRINTF("SSTAT4 ("); + s=GETPORT(SSTAT4); + if(s & SYNCERR) SPRINTF("SYNCERR "); + if(s & FWERR) SPRINTF("FWERR "); + if(s & FRERR) SPRINTF("FRERR "); + SPRINTF("); "); + + SPRINTF("DMACNTRL0 ("); + s=GETPORT(DMACNTRL0); + SPRINTF("%s ", s & _8BIT ? "8BIT" : "16BIT"); + SPRINTF("%s ", s & DMA ? "DMA" : "PIO" ); + SPRINTF("%s ", s & WRITE_READ ? "WRITE" : "READ" ); + if(s & ENDMA) SPRINTF("ENDMA "); + if(s & INTEN) SPRINTF("INTEN "); + if(s & RSTFIFO) SPRINTF("RSTFIFO "); + if(s & SWINT) SPRINTF("SWINT "); + SPRINTF("); "); + + SPRINTF("DMASTAT ("); + s=GETPORT(DMASTAT); + if(s & ATDONE) SPRINTF("ATDONE "); + if(s & WORDRDY) SPRINTF("WORDRDY "); + if(s & DFIFOFULL) SPRINTF("DFIFOFULL "); + if(s & DFIFOEMP) SPRINTF("DFIFOEMP "); + SPRINTF(")\n\n"); + + SPRINTF("enabled interrupts ("); + + s=GETPORT(SIMODE0); + if(s & ENSELDO) SPRINTF("ENSELDO "); + if(s & ENSELDI) SPRINTF("ENSELDI "); + if(s & ENSELINGO) SPRINTF("ENSELINGO "); + if(s & ENSWRAP) SPRINTF("ENSWRAP "); + if(s & ENSDONE) SPRINTF("ENSDONE "); + if(s & ENSPIORDY) SPRINTF("ENSPIORDY "); + if(s & ENDMADONE) SPRINTF("ENDMADONE "); + + s=GETPORT(SIMODE1); + if(s & ENSELTIMO) SPRINTF("ENSELTIMO "); + if(s & ENATNTARG) SPRINTF("ENATNTARG "); + if(s & ENPHASEMIS) SPRINTF("ENPHASEMIS "); + if(s & ENBUSFREE) SPRINTF("ENBUSFREE "); + if(s & ENSCSIPERR) SPRINTF("ENSCSIPERR "); + if(s & ENPHASECHG) SPRINTF("ENPHASECHG "); + if(s & ENREQINIT) SPRINTF("ENREQINIT "); + SPRINTF(")\n"); + + return (pos-start); +} + +#undef SPRINTF +#define SPRINTF(args...) do { if(pos < buffer + length) pos += sprintf(pos, ## args); } while(0) + +int aha152x_proc_info(char *buffer, char **start, + off_t offset, int length, int hostno, int inout) +{ + int i; + char *pos = buffer; + struct Scsi_Host *shpnt; + unsigned long flags; + Scsi_Cmnd *ptr; + + for(i=0, shpnt= (struct Scsi_Host *) NULL; i<IRQS; i++) + if(aha152x_host[i] && aha152x_host[i]->host_no == hostno) + shpnt=aha152x_host[i]; + + if(!shpnt) + return(-ESRCH); + + if(inout) /* Has data been written to the file ? */ + return(aha152x_set_info(buffer, length, shpnt)); + + SPRINTF(AHA152X_REVID "\n"); + + save_flags(flags); + cli(); + + SPRINTF("ioports 0x%04x to 0x%04x\n", + shpnt->io_port, shpnt->io_port+shpnt->n_io_port-1); + SPRINTF("interrupt 0x%02x\n", shpnt->irq); + SPRINTF("disconnection/reconnection %s\n", + HOSTDATA(shpnt)->reconnect ? "enabled" : "disabled"); + SPRINTF("parity checking %s\n", + HOSTDATA(shpnt)->parity ? "enabled" : "disabled"); + SPRINTF("synchronous transfers %s\n", + HOSTDATA(shpnt)->synchronous ? "enabled" : "disabled"); + SPRINTF("%d commands currently queued\n", HOSTDATA(shpnt)->commands); + + if(HOSTDATA(shpnt)->synchronous) { +#if 0 + SPRINTF("synchronously operating targets (tick=%ld ns):\n", + 250000000/loops_per_sec); + for(i=0; i<8; i++) + if(HOSTDATA(shpnt)->syncrate[i]&0x7f) + SPRINTF("target %d: period %dT/%ldns; req/ack offset %d\n", + i, + (((HOSTDATA(shpnt)->syncrate[i]&0x70)>>4)+2), + (((HOSTDATA(shpnt)->syncrate[i]&0x70)>>4)+2)* + 250000000/loops_per_sec, + HOSTDATA(shpnt)->syncrate[i]&0x0f); +#else + SPRINTF("synchronously operating targets (tick=50 ns):\n"); + for(i=0; i<8; i++) + if(HOSTDATA(shpnt)->syncrate[i]&0x7f) + SPRINTF("target %d: period %dT/%dns; req/ack offset %d\n", + i, + (((HOSTDATA(shpnt)->syncrate[i]&0x70)>>4)+2), + (((HOSTDATA(shpnt)->syncrate[i]&0x70)>>4)+2)*50, + HOSTDATA(shpnt)->syncrate[i]&0x0f); +#endif + } + +#ifdef DEBUG_AHA152X +#define PDEBUG(flags,txt) if(HOSTDATA(shpnt)->debug & flags) SPRINTF("(%s) ", txt); + + SPRINTF("enabled debugging options: "); + + PDEBUG(debug_skipports, "skip ports"); + PDEBUG(debug_queue, "queue"); + PDEBUG(debug_intr, "interrupt"); + PDEBUG(debug_selection, "selection"); + PDEBUG(debug_msgo, "message out"); + PDEBUG(debug_msgi, "message in"); + PDEBUG(debug_status, "status"); + PDEBUG(debug_cmd, "command"); + PDEBUG(debug_datai, "data in"); + PDEBUG(debug_datao, "data out"); + PDEBUG(debug_abort, "abort"); + PDEBUG(debug_done, "done"); + PDEBUG(debug_biosparam, "bios parameters"); + PDEBUG(debug_phases, "phases"); + PDEBUG(debug_queues, "queues"); + PDEBUG(debug_reset, "reset"); + + SPRINTF("\n"); +#endif + + SPRINTF("\nqueue status:\n"); + if(ISSUE_SC) { + SPRINTF("not yet issued commands:\n"); + for(ptr=ISSUE_SC; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) + pos += get_command(pos, ptr); + } else + SPRINTF("no not yet issued commands\n"); + + if(CURRENT_SC) { + SPRINTF("current command:\n"); + pos += get_command(pos, CURRENT_SC); + } else + SPRINTF("no current command\n"); + + if(DISCONNECTED_SC) { + SPRINTF("disconnected commands:\n"); + for(ptr=DISCONNECTED_SC; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) + pos += get_command(pos, ptr); + } else + SPRINTF("no disconnected commands\n"); + + restore_flags(flags); + + pos += get_ports(shpnt, pos); + + *start=buffer+offset; + if (pos - buffer < offset) + return 0; + else if (pos - buffer - offset < length) + return pos - buffer - offset; + else + return length; +} + +#ifdef MODULE +/* Eventually this will go into an include file, but this will be later */ +Scsi_Host_Template driver_template = AHA152X; + +#include "scsi_module.c" +#endif |