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authorThomas Schwinge <tschwinge@gnu.org>2006-01-22 15:54:41 +0000
committerThomas Schwinge <tschwinge@gnu.org>2009-06-18 00:26:29 +0200
commit4ad86505c480b2964548328a959c662e8aef5422 (patch)
tree9cc9b8f80d561ae7d7451d95a26ff8c252e86504 /linux/src/drivers/net/epic100.c
parent656d6634de02862e837f3a7d80a49e9ca072398d (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).
Diffstat (limited to 'linux/src/drivers/net/epic100.c')
-rw-r--r--linux/src/drivers/net/epic100.c1431
1 files changed, 766 insertions, 665 deletions
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
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-28 22:11:57 +0000