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path: root/drivers/net/lib82596.c
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Diffstat (limited to 'drivers/net/lib82596.c')
-rw-r--r--drivers/net/lib82596.c1412
1 files changed, 0 insertions, 1412 deletions
diff --git a/drivers/net/lib82596.c b/drivers/net/lib82596.c
deleted file mode 100644
index 9e042894479..00000000000
--- a/drivers/net/lib82596.c
+++ /dev/null
@@ -1,1412 +0,0 @@
-/* lasi_82596.c -- driver for the intel 82596 ethernet controller, as
- munged into HPPA boxen .
-
- This driver is based upon 82596.c, original credits are below...
- but there were too many hoops which HP wants jumped through to
- keep this code in there in a sane manner.
-
- 3 primary sources of the mess --
- 1) hppa needs *lots* of cacheline flushing to keep this kind of
- MMIO running.
-
- 2) The 82596 needs to see all of its pointers as their physical
- address. Thus virt_to_bus/bus_to_virt are *everywhere*.
-
- 3) The implementation HP is using seems to be significantly pickier
- about when and how the command and RX units are started. some
- command ordering was changed.
-
- Examination of the mach driver leads one to believe that there
- might be a saner way to pull this off... anyone who feels like a
- full rewrite can be my guest.
-
- Split 02/13/2000 Sam Creasey (sammy@oh.verio.com)
-
- 02/01/2000 Initial modifications for parisc by Helge Deller (deller@gmx.de)
- 03/02/2000 changes for better/correct(?) cache-flushing (deller)
-*/
-
-/* 82596.c: A generic 82596 ethernet driver for linux. */
-/*
- Based on Apricot.c
- Written 1994 by Mark Evans.
- This driver is for the Apricot 82596 bus-master interface
-
- Modularised 12/94 Mark Evans
-
-
- Modified to support the 82596 ethernet chips on 680x0 VME boards.
- by Richard Hirst <richard@sleepie.demon.co.uk>
- Renamed to be 82596.c
-
- 980825: Changed to receive directly in to sk_buffs which are
- allocated at open() time. Eliminates copy on incoming frames
- (small ones are still copied). Shared data now held in a
- non-cached page, so we can run on 68060 in copyback mode.
-
- TBD:
- * look at deferring rx frames rather than discarding (as per tulip)
- * handle tx ring full as per tulip
- * performance test to tune rx_copybreak
-
- Most of my modifications relate to the braindead big-endian
- implementation by Intel. When the i596 is operating in
- 'big-endian' mode, it thinks a 32 bit value of 0x12345678
- should be stored as 0x56781234. This is a real pain, when
- you have linked lists which are shared by the 680x0 and the
- i596.
-
- Driver skeleton
- Written 1993 by Donald Becker.
- Copyright 1993 United States Government as represented by the Director,
- National Security Agency. This software may only be used and distributed
- according to the terms of the GNU General Public License as modified by SRC,
- incorporated herein by reference.
-
- The author may be reached as becker@scyld.com, or C/O
- Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
-
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/bitops.h>
-#include <linux/dma-mapping.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/gfp.h>
-
-/* DEBUG flags
- */
-
-#define DEB_INIT 0x0001
-#define DEB_PROBE 0x0002
-#define DEB_SERIOUS 0x0004
-#define DEB_ERRORS 0x0008
-#define DEB_MULTI 0x0010
-#define DEB_TDR 0x0020
-#define DEB_OPEN 0x0040
-#define DEB_RESET 0x0080
-#define DEB_ADDCMD 0x0100
-#define DEB_STATUS 0x0200
-#define DEB_STARTTX 0x0400
-#define DEB_RXADDR 0x0800
-#define DEB_TXADDR 0x1000
-#define DEB_RXFRAME 0x2000
-#define DEB_INTS 0x4000
-#define DEB_STRUCT 0x8000
-#define DEB_ANY 0xffff
-
-
-#define DEB(x, y) if (i596_debug & (x)) { y; }
-
-
-/*
- * The MPU_PORT command allows direct access to the 82596. With PORT access
- * the following commands are available (p5-18). The 32-bit port command
- * must be word-swapped with the most significant word written first.
- * This only applies to VME boards.
- */
-#define PORT_RESET 0x00 /* reset 82596 */
-#define PORT_SELFTEST 0x01 /* selftest */
-#define PORT_ALTSCP 0x02 /* alternate SCB address */
-#define PORT_ALTDUMP 0x03 /* Alternate DUMP address */
-
-static int i596_debug = (DEB_SERIOUS|DEB_PROBE);
-
-/* Copy frames shorter than rx_copybreak, otherwise pass on up in
- * a full sized sk_buff. Value of 100 stolen from tulip.c (!alpha).
- */
-static int rx_copybreak = 100;
-
-#define PKT_BUF_SZ 1536
-#define MAX_MC_CNT 64
-
-#define ISCP_BUSY 0x0001
-
-#define I596_NULL ((u32)0xffffffff)
-
-#define CMD_EOL 0x8000 /* The last command of the list, stop. */
-#define CMD_SUSP 0x4000 /* Suspend after doing cmd. */
-#define CMD_INTR 0x2000 /* Interrupt after doing cmd. */
-
-#define CMD_FLEX 0x0008 /* Enable flexible memory model */
-
-enum commands {
- CmdNOp = 0, CmdSASetup = 1, CmdConfigure = 2, CmdMulticastList = 3,
- CmdTx = 4, CmdTDR = 5, CmdDump = 6, CmdDiagnose = 7
-};
-
-#define STAT_C 0x8000 /* Set to 0 after execution */
-#define STAT_B 0x4000 /* Command being executed */
-#define STAT_OK 0x2000 /* Command executed ok */
-#define STAT_A 0x1000 /* Command aborted */
-
-#define CUC_START 0x0100
-#define CUC_RESUME 0x0200
-#define CUC_SUSPEND 0x0300
-#define CUC_ABORT 0x0400
-#define RX_START 0x0010
-#define RX_RESUME 0x0020
-#define RX_SUSPEND 0x0030
-#define RX_ABORT 0x0040
-
-#define TX_TIMEOUT (HZ/20)
-
-
-struct i596_reg {
- unsigned short porthi;
- unsigned short portlo;
- u32 ca;
-};
-
-#define EOF 0x8000
-#define SIZE_MASK 0x3fff
-
-struct i596_tbd {
- unsigned short size;
- unsigned short pad;
- u32 next;
- u32 data;
- u32 cache_pad[5]; /* Total 32 bytes... */
-};
-
-/* The command structure has two 'next' pointers; v_next is the address of
- * the next command as seen by the CPU, b_next is the address of the next
- * command as seen by the 82596. The b_next pointer, as used by the 82596
- * always references the status field of the next command, rather than the
- * v_next field, because the 82596 is unaware of v_next. It may seem more
- * logical to put v_next at the end of the structure, but we cannot do that
- * because the 82596 expects other fields to be there, depending on command
- * type.
- */
-
-struct i596_cmd {
- struct i596_cmd *v_next; /* Address from CPUs viewpoint */
- unsigned short status;
- unsigned short command;
- u32 b_next; /* Address from i596 viewpoint */
-};
-
-struct tx_cmd {
- struct i596_cmd cmd;
- u32 tbd;
- unsigned short size;
- unsigned short pad;
- struct sk_buff *skb; /* So we can free it after tx */
- dma_addr_t dma_addr;
-#ifdef __LP64__
- u32 cache_pad[6]; /* Total 64 bytes... */
-#else
- u32 cache_pad[1]; /* Total 32 bytes... */
-#endif
-};
-
-struct tdr_cmd {
- struct i596_cmd cmd;
- unsigned short status;
- unsigned short pad;
-};
-
-struct mc_cmd {
- struct i596_cmd cmd;
- short mc_cnt;
- char mc_addrs[MAX_MC_CNT*6];
-};
-
-struct sa_cmd {
- struct i596_cmd cmd;
- char eth_addr[8];
-};
-
-struct cf_cmd {
- struct i596_cmd cmd;
- char i596_config[16];
-};
-
-struct i596_rfd {
- unsigned short stat;
- unsigned short cmd;
- u32 b_next; /* Address from i596 viewpoint */
- u32 rbd;
- unsigned short count;
- unsigned short size;
- struct i596_rfd *v_next; /* Address from CPUs viewpoint */
- struct i596_rfd *v_prev;
-#ifndef __LP64__
- u32 cache_pad[2]; /* Total 32 bytes... */
-#endif
-};
-
-struct i596_rbd {
- /* hardware data */
- unsigned short count;
- unsigned short zero1;
- u32 b_next;
- u32 b_data; /* Address from i596 viewpoint */
- unsigned short size;
- unsigned short zero2;
- /* driver data */
- struct sk_buff *skb;
- struct i596_rbd *v_next;
- u32 b_addr; /* This rbd addr from i596 view */
- unsigned char *v_data; /* Address from CPUs viewpoint */
- /* Total 32 bytes... */
-#ifdef __LP64__
- u32 cache_pad[4];
-#endif
-};
-
-/* These values as chosen so struct i596_dma fits in one page... */
-
-#define TX_RING_SIZE 32
-#define RX_RING_SIZE 16
-
-struct i596_scb {
- unsigned short status;
- unsigned short command;
- u32 cmd;
- u32 rfd;
- u32 crc_err;
- u32 align_err;
- u32 resource_err;
- u32 over_err;
- u32 rcvdt_err;
- u32 short_err;
- unsigned short t_on;
- unsigned short t_off;
-};
-
-struct i596_iscp {
- u32 stat;
- u32 scb;
-};
-
-struct i596_scp {
- u32 sysbus;
- u32 pad;
- u32 iscp;
-};
-
-struct i596_dma {
- struct i596_scp scp __attribute__((aligned(32)));
- volatile struct i596_iscp iscp __attribute__((aligned(32)));
- volatile struct i596_scb scb __attribute__((aligned(32)));
- struct sa_cmd sa_cmd __attribute__((aligned(32)));
- struct cf_cmd cf_cmd __attribute__((aligned(32)));
- struct tdr_cmd tdr_cmd __attribute__((aligned(32)));
- struct mc_cmd mc_cmd __attribute__((aligned(32)));
- struct i596_rfd rfds[RX_RING_SIZE] __attribute__((aligned(32)));
- struct i596_rbd rbds[RX_RING_SIZE] __attribute__((aligned(32)));
- struct tx_cmd tx_cmds[TX_RING_SIZE] __attribute__((aligned(32)));
- struct i596_tbd tbds[TX_RING_SIZE] __attribute__((aligned(32)));
-};
-
-struct i596_private {
- struct i596_dma *dma;
- u32 stat;
- int last_restart;
- struct i596_rfd *rfd_head;
- struct i596_rbd *rbd_head;
- struct i596_cmd *cmd_tail;
- struct i596_cmd *cmd_head;
- int cmd_backlog;
- u32 last_cmd;
- int next_tx_cmd;
- int options;
- spinlock_t lock; /* serialize access to chip */
- dma_addr_t dma_addr;
- void __iomem *mpu_port;
- void __iomem *ca;
-};
-
-static const char init_setup[] =
-{
- 0x8E, /* length, prefetch on */
- 0xC8, /* fifo to 8, monitor off */
- 0x80, /* don't save bad frames */
- 0x2E, /* No source address insertion, 8 byte preamble */
- 0x00, /* priority and backoff defaults */
- 0x60, /* interframe spacing */
- 0x00, /* slot time LSB */
- 0xf2, /* slot time and retries */
- 0x00, /* promiscuous mode */
- 0x00, /* collision detect */
- 0x40, /* minimum frame length */
- 0xff,
- 0x00,
- 0x7f /* *multi IA */ };
-
-static int i596_open(struct net_device *dev);
-static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev);
-static irqreturn_t i596_interrupt(int irq, void *dev_id);
-static int i596_close(struct net_device *dev);
-static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd);
-static void i596_tx_timeout (struct net_device *dev);
-static void print_eth(unsigned char *buf, char *str);
-static void set_multicast_list(struct net_device *dev);
-static inline void ca(struct net_device *dev);
-static void mpu_port(struct net_device *dev, int c, dma_addr_t x);
-
-static int rx_ring_size = RX_RING_SIZE;
-static int ticks_limit = 100;
-static int max_cmd_backlog = TX_RING_SIZE-1;
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void i596_poll_controller(struct net_device *dev);
-#endif
-
-
-static inline int wait_istat(struct net_device *dev, struct i596_dma *dma, int delcnt, char *str)
-{
- DMA_INV(dev, &(dma->iscp), sizeof(struct i596_iscp));
- while (--delcnt && dma->iscp.stat) {
- udelay(10);
- DMA_INV(dev, &(dma->iscp), sizeof(struct i596_iscp));
- }
- if (!delcnt) {
- printk(KERN_ERR "%s: %s, iscp.stat %04x, didn't clear\n",
- dev->name, str, SWAP16(dma->iscp.stat));
- return -1;
- } else
- return 0;
-}
-
-
-static inline int wait_cmd(struct net_device *dev, struct i596_dma *dma, int delcnt, char *str)
-{
- DMA_INV(dev, &(dma->scb), sizeof(struct i596_scb));
- while (--delcnt && dma->scb.command) {
- udelay(10);
- DMA_INV(dev, &(dma->scb), sizeof(struct i596_scb));
- }
- if (!delcnt) {
- printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n",
- dev->name, str,
- SWAP16(dma->scb.status),
- SWAP16(dma->scb.command));
- return -1;
- } else
- return 0;
-}
-
-
-static void i596_display_data(struct net_device *dev)
-{
- struct i596_private *lp = netdev_priv(dev);
- struct i596_dma *dma = lp->dma;
- struct i596_cmd *cmd;
- struct i596_rfd *rfd;
- struct i596_rbd *rbd;
-
- printk(KERN_DEBUG "lp and scp at %p, .sysbus = %08x, .iscp = %08x\n",
- &dma->scp, dma->scp.sysbus, SWAP32(dma->scp.iscp));
- printk(KERN_DEBUG "iscp at %p, iscp.stat = %08x, .scb = %08x\n",
- &dma->iscp, SWAP32(dma->iscp.stat), SWAP32(dma->iscp.scb));
- printk(KERN_DEBUG "scb at %p, scb.status = %04x, .command = %04x,"
- " .cmd = %08x, .rfd = %08x\n",
- &dma->scb, SWAP16(dma->scb.status), SWAP16(dma->scb.command),
- SWAP16(dma->scb.cmd), SWAP32(dma->scb.rfd));
- printk(KERN_DEBUG " errors: crc %x, align %x, resource %x,"
- " over %x, rcvdt %x, short %x\n",
- SWAP32(dma->scb.crc_err), SWAP32(dma->scb.align_err),
- SWAP32(dma->scb.resource_err), SWAP32(dma->scb.over_err),
- SWAP32(dma->scb.rcvdt_err), SWAP32(dma->scb.short_err));
- cmd = lp->cmd_head;
- while (cmd != NULL) {
- printk(KERN_DEBUG
- "cmd at %p, .status = %04x, .command = %04x,"
- " .b_next = %08x\n",
- cmd, SWAP16(cmd->status), SWAP16(cmd->command),
- SWAP32(cmd->b_next));
- cmd = cmd->v_next;
- }
- rfd = lp->rfd_head;
- printk(KERN_DEBUG "rfd_head = %p\n", rfd);
- do {
- printk(KERN_DEBUG
- " %p .stat %04x, .cmd %04x, b_next %08x, rbd %08x,"
- " count %04x\n",
- rfd, SWAP16(rfd->stat), SWAP16(rfd->cmd),
- SWAP32(rfd->b_next), SWAP32(rfd->rbd),
- SWAP16(rfd->count));
- rfd = rfd->v_next;
- } while (rfd != lp->rfd_head);
- rbd = lp->rbd_head;
- printk(KERN_DEBUG "rbd_head = %p\n", rbd);
- do {
- printk(KERN_DEBUG
- " %p .count %04x, b_next %08x, b_data %08x,"
- " size %04x\n",
- rbd, SWAP16(rbd->count), SWAP32(rbd->b_next),
- SWAP32(rbd->b_data), SWAP16(rbd->size));
- rbd = rbd->v_next;
- } while (rbd != lp->rbd_head);
- DMA_INV(dev, dma, sizeof(struct i596_dma));
-}
-
-
-#define virt_to_dma(lp, v) ((lp)->dma_addr + (dma_addr_t)((unsigned long)(v)-(unsigned long)((lp)->dma)))
-
-static inline int init_rx_bufs(struct net_device *dev)
-{
- struct i596_private *lp = netdev_priv(dev);
- struct i596_dma *dma = lp->dma;
- int i;
- struct i596_rfd *rfd;
- struct i596_rbd *rbd;
-
- /* First build the Receive Buffer Descriptor List */
-
- for (i = 0, rbd = dma->rbds; i < rx_ring_size; i++, rbd++) {
- dma_addr_t dma_addr;
- struct sk_buff *skb;
-
- skb = netdev_alloc_skb_ip_align(dev, PKT_BUF_SZ);
- if (skb == NULL)
- return -1;
- dma_addr = dma_map_single(dev->dev.parent, skb->data,
- PKT_BUF_SZ, DMA_FROM_DEVICE);
- rbd->v_next = rbd+1;
- rbd->b_next = SWAP32(virt_to_dma(lp, rbd+1));
- rbd->b_addr = SWAP32(virt_to_dma(lp, rbd));
- rbd->skb = skb;
- rbd->v_data = skb->data;
- rbd->b_data = SWAP32(dma_addr);
- rbd->size = SWAP16(PKT_BUF_SZ);
- }
- lp->rbd_head = dma->rbds;
- rbd = dma->rbds + rx_ring_size - 1;
- rbd->v_next = dma->rbds;
- rbd->b_next = SWAP32(virt_to_dma(lp, dma->rbds));
-
- /* Now build the Receive Frame Descriptor List */
-
- for (i = 0, rfd = dma->rfds; i < rx_ring_size; i++, rfd++) {
- rfd->rbd = I596_NULL;
- rfd->v_next = rfd+1;
- rfd->v_prev = rfd-1;
- rfd->b_next = SWAP32(virt_to_dma(lp, rfd+1));
- rfd->cmd = SWAP16(CMD_FLEX);
- }
- lp->rfd_head = dma->rfds;
- dma->scb.rfd = SWAP32(virt_to_dma(lp, dma->rfds));
- rfd = dma->rfds;
- rfd->rbd = SWAP32(virt_to_dma(lp, lp->rbd_head));
- rfd->v_prev = dma->rfds + rx_ring_size - 1;
- rfd = dma->rfds + rx_ring_size - 1;
- rfd->v_next = dma->rfds;
- rfd->b_next = SWAP32(virt_to_dma(lp, dma->rfds));
- rfd->cmd = SWAP16(CMD_EOL|CMD_FLEX);
-
- DMA_WBACK_INV(dev, dma, sizeof(struct i596_dma));
- return 0;
-}
-
-static inline void remove_rx_bufs(struct net_device *dev)
-{
- struct i596_private *lp = netdev_priv(dev);
- struct i596_rbd *rbd;
- int i;
-
- for (i = 0, rbd = lp->dma->rbds; i < rx_ring_size; i++, rbd++) {
- if (rbd->skb == NULL)
- break;
- dma_unmap_single(dev->dev.parent,
- (dma_addr_t)SWAP32(rbd->b_data),
- PKT_BUF_SZ, DMA_FROM_DEVICE);
- dev_kfree_skb(rbd->skb);
- }
-}
-
-
-static void rebuild_rx_bufs(struct net_device *dev)
-{
- struct i596_private *lp = netdev_priv(dev);
- struct i596_dma *dma = lp->dma;
- int i;
-
- /* Ensure rx frame/buffer descriptors are tidy */
-
- for (i = 0; i < rx_ring_size; i++) {
- dma->rfds[i].rbd = I596_NULL;
- dma->rfds[i].cmd = SWAP16(CMD_FLEX);
- }
- dma->rfds[rx_ring_size-1].cmd = SWAP16(CMD_EOL|CMD_FLEX);
- lp->rfd_head = dma->rfds;
- dma->scb.rfd = SWAP32(virt_to_dma(lp, dma->rfds));
- lp->rbd_head = dma->rbds;
- dma->rfds[0].rbd = SWAP32(virt_to_dma(lp, dma->rbds));
-
- DMA_WBACK_INV(dev, dma, sizeof(struct i596_dma));
-}
-
-
-static int init_i596_mem(struct net_device *dev)
-{
- struct i596_private *lp = netdev_priv(dev);
- struct i596_dma *dma = lp->dma;
- unsigned long flags;
-
- mpu_port(dev, PORT_RESET, 0);
- udelay(100); /* Wait 100us - seems to help */
-
- /* change the scp address */
-
- lp->last_cmd = jiffies;
-
- dma->scp.sysbus = SYSBUS;
- dma->scp.iscp = SWAP32(virt_to_dma(lp, &(dma->iscp)));
- dma->iscp.scb = SWAP32(virt_to_dma(lp, &(dma->scb)));
- dma->iscp.stat = SWAP32(ISCP_BUSY);
- lp->cmd_backlog = 0;
-
- lp->cmd_head = NULL;
- dma->scb.cmd = I596_NULL;
-
- DEB(DEB_INIT, printk(KERN_DEBUG "%s: starting i82596.\n", dev->name));
-
- DMA_WBACK(dev, &(dma->scp), sizeof(struct i596_scp));
- DMA_WBACK(dev, &(dma->iscp), sizeof(struct i596_iscp));
- DMA_WBACK(dev, &(dma->scb), sizeof(struct i596_scb));
-
- mpu_port(dev, PORT_ALTSCP, virt_to_dma(lp, &dma->scp));
- ca(dev);
- if (wait_istat(dev, dma, 1000, "initialization timed out"))
- goto failed;
- DEB(DEB_INIT, printk(KERN_DEBUG
- "%s: i82596 initialization successful\n",
- dev->name));
-
- if (request_irq(dev->irq, i596_interrupt, 0, "i82596", dev)) {
- printk(KERN_ERR "%s: IRQ %d not free\n", dev->name, dev->irq);
- goto failed;
- }
-
- /* Ensure rx frame/buffer descriptors are tidy */
- rebuild_rx_bufs(dev);
-
- dma->scb.command = 0;
- DMA_WBACK(dev, &(dma->scb), sizeof(struct i596_scb));
-
- DEB(DEB_INIT, printk(KERN_DEBUG
- "%s: queuing CmdConfigure\n", dev->name));
- memcpy(dma->cf_cmd.i596_config, init_setup, 14);
- dma->cf_cmd.cmd.command = SWAP16(CmdConfigure);
- DMA_WBACK(dev, &(dma->cf_cmd), sizeof(struct cf_cmd));
- i596_add_cmd(dev, &dma->cf_cmd.cmd);
-
- DEB(DEB_INIT, printk(KERN_DEBUG "%s: queuing CmdSASetup\n", dev->name));
- memcpy(dma->sa_cmd.eth_addr, dev->dev_addr, 6);
- dma->sa_cmd.cmd.command = SWAP16(CmdSASetup);
- DMA_WBACK(dev, &(dma->sa_cmd), sizeof(struct sa_cmd));
- i596_add_cmd(dev, &dma->sa_cmd.cmd);
-
- DEB(DEB_INIT, printk(KERN_DEBUG "%s: queuing CmdTDR\n", dev->name));
- dma->tdr_cmd.cmd.command = SWAP16(CmdTDR);
- DMA_WBACK(dev, &(dma->tdr_cmd), sizeof(struct tdr_cmd));
- i596_add_cmd(dev, &dma->tdr_cmd.cmd);
-
- spin_lock_irqsave (&lp->lock, flags);
-
- if (wait_cmd(dev, dma, 1000, "timed out waiting to issue RX_START")) {
- spin_unlock_irqrestore (&lp->lock, flags);
- goto failed_free_irq;
- }
- DEB(DEB_INIT, printk(KERN_DEBUG "%s: Issuing RX_START\n", dev->name));
- dma->scb.command = SWAP16(RX_START);
- dma->scb.rfd = SWAP32(virt_to_dma(lp, dma->rfds));
- DMA_WBACK(dev, &(dma->scb), sizeof(struct i596_scb));
-
- ca(dev);
-
- spin_unlock_irqrestore (&lp->lock, flags);
- if (wait_cmd(dev, dma, 1000, "RX_START not processed"))
- goto failed_free_irq;
- DEB(DEB_INIT, printk(KERN_DEBUG
- "%s: Receive unit started OK\n", dev->name));
- return 0;
-
-failed_free_irq:
- free_irq(dev->irq, dev);
-failed:
- printk(KERN_ERR "%s: Failed to initialise 82596\n", dev->name);
- mpu_port(dev, PORT_RESET, 0);
- return -1;
-}
-
-
-static inline int i596_rx(struct net_device *dev)
-{
- struct i596_private *lp = netdev_priv(dev);
- struct i596_rfd *rfd;
- struct i596_rbd *rbd;
- int frames = 0;
-
- DEB(DEB_RXFRAME, printk(KERN_DEBUG
- "i596_rx(), rfd_head %p, rbd_head %p\n",
- lp->rfd_head, lp->rbd_head));
-
-
- rfd = lp->rfd_head; /* Ref next frame to check */
-
- DMA_INV(dev, rfd, sizeof(struct i596_rfd));
- while (rfd->stat & SWAP16(STAT_C)) { /* Loop while complete frames */
- if (rfd->rbd == I596_NULL)
- rbd = NULL;
- else if (rfd->rbd == lp->rbd_head->b_addr) {
- rbd = lp->rbd_head;
- DMA_INV(dev, rbd, sizeof(struct i596_rbd));
- } else {
- printk(KERN_ERR "%s: rbd chain broken!\n", dev->name);
- /* XXX Now what? */
- rbd = NULL;
- }
- DEB(DEB_RXFRAME, printk(KERN_DEBUG
- " rfd %p, rfd.rbd %08x, rfd.stat %04x\n",
- rfd, rfd->rbd, rfd->stat));
-
- if (rbd != NULL && (rfd->stat & SWAP16(STAT_OK))) {
- /* a good frame */
- int pkt_len = SWAP16(rbd->count) & 0x3fff;
- struct sk_buff *skb = rbd->skb;
- int rx_in_place = 0;
-
- DEB(DEB_RXADDR, print_eth(rbd->v_data, "received"));
- frames++;
-
- /* Check if the packet is long enough to just accept
- * without copying to a properly sized skbuff.
- */
-
- if (pkt_len > rx_copybreak) {
- struct sk_buff *newskb;
- dma_addr_t dma_addr;
-
- dma_unmap_single(dev->dev.parent,
- (dma_addr_t)SWAP32(rbd->b_data),
- PKT_BUF_SZ, DMA_FROM_DEVICE);
- /* Get fresh skbuff to replace filled one. */
- newskb = netdev_alloc_skb_ip_align(dev,
- PKT_BUF_SZ);
- if (newskb == NULL) {
- skb = NULL; /* drop pkt */
- goto memory_squeeze;
- }
-
- /* Pass up the skb already on the Rx ring. */
- skb_put(skb, pkt_len);
- rx_in_place = 1;
- rbd->skb = newskb;
- dma_addr = dma_map_single(dev->dev.parent,
- newskb->data,
- PKT_BUF_SZ,
- DMA_FROM_DEVICE);
- rbd->v_data = newskb->data;
- rbd->b_data = SWAP32(dma_addr);
- DMA_WBACK_INV(dev, rbd, sizeof(struct i596_rbd));
- } else
- skb = netdev_alloc_skb_ip_align(dev, pkt_len);
-memory_squeeze:
- if (skb == NULL) {
- /* XXX tulip.c can defer packets here!! */
- printk(KERN_ERR
- "%s: i596_rx Memory squeeze, dropping packet.\n",
- dev->name);
- dev->stats.rx_dropped++;
- } else {
- if (!rx_in_place) {
- /* 16 byte align the data fields */
- dma_sync_single_for_cpu(dev->dev.parent,
- (dma_addr_t)SWAP32(rbd->b_data),
- PKT_BUF_SZ, DMA_FROM_DEVICE);
- memcpy(skb_put(skb, pkt_len), rbd->v_data, pkt_len);
- dma_sync_single_for_device(dev->dev.parent,
- (dma_addr_t)SWAP32(rbd->b_data),
- PKT_BUF_SZ, DMA_FROM_DEVICE);
- }
- skb->len = pkt_len;
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += pkt_len;
- }
- } else {
- DEB(DEB_ERRORS, printk(KERN_DEBUG
- "%s: Error, rfd.stat = 0x%04x\n",
- dev->name, rfd->stat));
- dev->stats.rx_errors++;
- if (rfd->stat & SWAP16(0x0100))
- dev->stats.collisions++;
- if (rfd->stat & SWAP16(0x8000))
- dev->stats.rx_length_errors++;
- if (rfd->stat & SWAP16(0x0001))
- dev->stats.rx_over_errors++;
- if (rfd->stat & SWAP16(0x0002))
- dev->stats.rx_fifo_errors++;
- if (rfd->stat & SWAP16(0x0004))
- dev->stats.rx_frame_errors++;
- if (rfd->stat & SWAP16(0x0008))
- dev->stats.rx_crc_errors++;
- if (rfd->stat & SWAP16(0x0010))
- dev->stats.rx_length_errors++;
- }
-
- /* Clear the buffer descriptor count and EOF + F flags */
-
- if (rbd != NULL && (rbd->count & SWAP16(0x4000))) {
- rbd->count = 0;
- lp->rbd_head = rbd->v_next;
- DMA_WBACK_INV(dev, rbd, sizeof(struct i596_rbd));
- }
-
- /* Tidy the frame descriptor, marking it as end of list */
-
- rfd->rbd = I596_NULL;
- rfd->stat = 0;
- rfd->cmd = SWAP16(CMD_EOL|CMD_FLEX);
- rfd->count = 0;
-
- /* Update record of next frame descriptor to process */
-
- lp->dma->scb.rfd = rfd->b_next;
- lp->rfd_head = rfd->v_next;
- DMA_WBACK_INV(dev, rfd, sizeof(struct i596_rfd));
-
- /* Remove end-of-list from old end descriptor */
-
- rfd->v_prev->cmd = SWAP16(CMD_FLEX);
- DMA_WBACK_INV(dev, rfd->v_prev, sizeof(struct i596_rfd));
- rfd = lp->rfd_head;
- DMA_INV(dev, rfd, sizeof(struct i596_rfd));
- }
-
- DEB(DEB_RXFRAME, printk(KERN_DEBUG "frames %d\n", frames));
-
- return 0;
-}
-
-
-static inline void i596_cleanup_cmd(struct net_device *dev, struct i596_private *lp)
-{
- struct i596_cmd *ptr;
-
- while (lp->cmd_head != NULL) {
- ptr = lp->cmd_head;
- lp->cmd_head = ptr->v_next;
- lp->cmd_backlog--;
-
- switch (SWAP16(ptr->command) & 0x7) {
- case CmdTx:
- {
- struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
- struct sk_buff *skb = tx_cmd->skb;
- dma_unmap_single(dev->dev.parent,
- tx_cmd->dma_addr,
- skb->len, DMA_TO_DEVICE);
-
- dev_kfree_skb(skb);
-
- dev->stats.tx_errors++;
- dev->stats.tx_aborted_errors++;
-
- ptr->v_next = NULL;
- ptr->b_next = I596_NULL;
- tx_cmd->cmd.command = 0; /* Mark as free */
- break;
- }
- default:
- ptr->v_next = NULL;
- ptr->b_next = I596_NULL;
- }
- DMA_WBACK_INV(dev, ptr, sizeof(struct i596_cmd));
- }
-
- wait_cmd(dev, lp->dma, 100, "i596_cleanup_cmd timed out");
- lp->dma->scb.cmd = I596_NULL;
- DMA_WBACK(dev, &(lp->dma->scb), sizeof(struct i596_scb));
-}
-
-
-static inline void i596_reset(struct net_device *dev, struct i596_private *lp)
-{
- unsigned long flags;
-
- DEB(DEB_RESET, printk(KERN_DEBUG "i596_reset\n"));
-
- spin_lock_irqsave (&lp->lock, flags);
-
- wait_cmd(dev, lp->dma, 100, "i596_reset timed out");
-
- netif_stop_queue(dev);
-
- /* FIXME: this command might cause an lpmc */
- lp->dma->scb.command = SWAP16(CUC_ABORT | RX_ABORT);
- DMA_WBACK(dev, &(lp->dma->scb), sizeof(struct i596_scb));
- ca(dev);
-
- /* wait for shutdown */
- wait_cmd(dev, lp->dma, 1000, "i596_reset 2 timed out");
- spin_unlock_irqrestore (&lp->lock, flags);
-
- i596_cleanup_cmd(dev, lp);
- i596_rx(dev);
-
- netif_start_queue(dev);
- init_i596_mem(dev);
-}
-
-
-static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd)
-{
- struct i596_private *lp = netdev_priv(dev);
- struct i596_dma *dma = lp->dma;
- unsigned long flags;
-
- DEB(DEB_ADDCMD, printk(KERN_DEBUG "i596_add_cmd cmd_head %p\n",
- lp->cmd_head));
-
- cmd->status = 0;
- cmd->command |= SWAP16(CMD_EOL | CMD_INTR);
- cmd->v_next = NULL;
- cmd->b_next = I596_NULL;
- DMA_WBACK(dev, cmd, sizeof(struct i596_cmd));
-
- spin_lock_irqsave (&lp->lock, flags);
-
- if (lp->cmd_head != NULL) {
- lp->cmd_tail->v_next = cmd;
- lp->cmd_tail->b_next = SWAP32(virt_to_dma(lp, &cmd->status));
- DMA_WBACK(dev, lp->cmd_tail, sizeof(struct i596_cmd));
- } else {
- lp->cmd_head = cmd;
- wait_cmd(dev, dma, 100, "i596_add_cmd timed out");
- dma->scb.cmd = SWAP32(virt_to_dma(lp, &cmd->status));
- dma->scb.command = SWAP16(CUC_START);
- DMA_WBACK(dev, &(dma->scb), sizeof(struct i596_scb));
- ca(dev);
- }
- lp->cmd_tail = cmd;
- lp->cmd_backlog++;
-
- spin_unlock_irqrestore (&lp->lock, flags);
-
- if (lp->cmd_backlog > max_cmd_backlog) {
- unsigned long tickssofar = jiffies - lp->last_cmd;
-
- if (tickssofar < ticks_limit)
- return;
-
- printk(KERN_ERR
- "%s: command unit timed out, status resetting.\n",
- dev->name);
-#if 1
- i596_reset(dev, lp);
-#endif
- }
-}
-
-static int i596_open(struct net_device *dev)
-{
- DEB(DEB_OPEN, printk(KERN_DEBUG
- "%s: i596_open() irq %d.\n", dev->name, dev->irq));
-
- if (init_rx_bufs(dev)) {
- printk(KERN_ERR "%s: Failed to init rx bufs\n", dev->name);
- return -EAGAIN;
- }
- if (init_i596_mem(dev)) {
- printk(KERN_ERR "%s: Failed to init memory\n", dev->name);
- goto out_remove_rx_bufs;
- }
- netif_start_queue(dev);
-
- return 0;
-
-out_remove_rx_bufs:
- remove_rx_bufs(dev);
- return -EAGAIN;
-}
-
-static void i596_tx_timeout (struct net_device *dev)
-{
- struct i596_private *lp = netdev_priv(dev);
-
- /* Transmitter timeout, serious problems. */
- DEB(DEB_ERRORS, printk(KERN_DEBUG
- "%s: transmit timed out, status resetting.\n",
- dev->name));
-
- dev->stats.tx_errors++;
-
- /* Try to restart the adaptor */
- if (lp->last_restart == dev->stats.tx_packets) {
- DEB(DEB_ERRORS, printk(KERN_DEBUG "Resetting board.\n"));
- /* Shutdown and restart */
- i596_reset (dev, lp);
- } else {
- /* Issue a channel attention signal */
- DEB(DEB_ERRORS, printk(KERN_DEBUG "Kicking board.\n"));
- lp->dma->scb.command = SWAP16(CUC_START | RX_START);
- DMA_WBACK_INV(dev, &(lp->dma->scb), sizeof(struct i596_scb));
- ca (dev);
- lp->last_restart = dev->stats.tx_packets;
- }
-
- dev->trans_start = jiffies; /* prevent tx timeout */
- netif_wake_queue (dev);
-}
-
-
-static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct i596_private *lp = netdev_priv(dev);
- struct tx_cmd *tx_cmd;
- struct i596_tbd *tbd;
- short length = skb->len;
-
- DEB(DEB_STARTTX, printk(KERN_DEBUG
- "%s: i596_start_xmit(%x,%p) called\n",
- dev->name, skb->len, skb->data));
-
- if (length < ETH_ZLEN) {
- if (skb_padto(skb, ETH_ZLEN))
- return NETDEV_TX_OK;
- length = ETH_ZLEN;
- }
-
- netif_stop_queue(dev);
-
- tx_cmd = lp->dma->tx_cmds + lp->next_tx_cmd;
- tbd = lp->dma->tbds + lp->next_tx_cmd;
-
- if (tx_cmd->cmd.command) {
- DEB(DEB_ERRORS, printk(KERN_DEBUG
- "%s: xmit ring full, dropping packet.\n",
- dev->name));
- dev->stats.tx_dropped++;
-
- dev_kfree_skb(skb);
- } else {
- if (++lp->next_tx_cmd == TX_RING_SIZE)
- lp->next_tx_cmd = 0;
- tx_cmd->tbd = SWAP32(virt_to_dma(lp, tbd));
- tbd->next = I596_NULL;
-
- tx_cmd->cmd.command = SWAP16(CMD_FLEX | CmdTx);
- tx_cmd->skb = skb;
-
- tx_cmd->pad = 0;
- tx_cmd->size = 0;
- tbd->pad = 0;
- tbd->size = SWAP16(EOF | length);
-
- tx_cmd->dma_addr = dma_map_single(dev->dev.parent, skb->data,
- skb->len, DMA_TO_DEVICE);
- tbd->data = SWAP32(tx_cmd->dma_addr);
-
- DEB(DEB_TXADDR, print_eth(skb->data, "tx-queued"));
- DMA_WBACK_INV(dev, tx_cmd, sizeof(struct tx_cmd));
- DMA_WBACK_INV(dev, tbd, sizeof(struct i596_tbd));
- i596_add_cmd(dev, &tx_cmd->cmd);
-
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += length;
- }
-
- netif_start_queue(dev);
-
- return NETDEV_TX_OK;
-}
-
-static void print_eth(unsigned char *add, char *str)
-{
- printk(KERN_DEBUG "i596 0x%p, %pM --> %pM %02X%02X, %s\n",
- add, add + 6, add, add[12], add[13], str);
-}
-static const struct net_device_ops i596_netdev_ops = {
- .ndo_open = i596_open,
- .ndo_stop = i596_close,
- .ndo_start_xmit = i596_start_xmit,
- .ndo_set_multicast_list = set_multicast_list,
- .ndo_tx_timeout = i596_tx_timeout,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = i596_poll_controller,
-#endif
-};
-
-static int __devinit i82596_probe(struct net_device *dev)
-{
- int i;
- struct i596_private *lp = netdev_priv(dev);
- struct i596_dma *dma;
-
- /* This lot is ensure things have been cache line aligned. */
- BUILD_BUG_ON(sizeof(struct i596_rfd) != 32);
- BUILD_BUG_ON(sizeof(struct i596_rbd) & 31);
- BUILD_BUG_ON(sizeof(struct tx_cmd) & 31);
- BUILD_BUG_ON(sizeof(struct i596_tbd) != 32);
-#ifndef __LP64__
- BUILD_BUG_ON(sizeof(struct i596_dma) > 4096);
-#endif
-
- if (!dev->base_addr || !dev->irq)
- return -ENODEV;
-
- dma = (struct i596_dma *) DMA_ALLOC(dev->dev.parent,
- sizeof(struct i596_dma), &lp->dma_addr, GFP_KERNEL);
- if (!dma) {
- printk(KERN_ERR "%s: Couldn't get shared memory\n", __FILE__);
- return -ENOMEM;
- }
-
- dev->netdev_ops = &i596_netdev_ops;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- memset(dma, 0, sizeof(struct i596_dma));
- lp->dma = dma;
-
- dma->scb.command = 0;
- dma->scb.cmd = I596_NULL;
- dma->scb.rfd = I596_NULL;
- spin_lock_init(&lp->lock);
-
- DMA_WBACK_INV(dev, dma, sizeof(struct i596_dma));
-
- i = register_netdev(dev);
- if (i) {
- DMA_FREE(dev->dev.parent, sizeof(struct i596_dma),
- (void *)dma, lp->dma_addr);
- return i;
- }
-
- DEB(DEB_PROBE, printk(KERN_INFO "%s: 82596 at %#3lx, %pM IRQ %d.\n",
- dev->name, dev->base_addr, dev->dev_addr,
- dev->irq));
- DEB(DEB_INIT, printk(KERN_INFO
- "%s: dma at 0x%p (%d bytes), lp->scb at 0x%p\n",
- dev->name, dma, (int)sizeof(struct i596_dma),
- &dma->scb));
-
- return 0;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void i596_poll_controller(struct net_device *dev)
-{
- disable_irq(dev->irq);
- i596_interrupt(dev->irq, dev);
- enable_irq(dev->irq);
-}
-#endif
-
-static irqreturn_t i596_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct i596_private *lp;
- struct i596_dma *dma;
- unsigned short status, ack_cmd = 0;
-
- lp = netdev_priv(dev);
- dma = lp->dma;
-
- spin_lock (&lp->lock);
-
- wait_cmd(dev, dma, 100, "i596 interrupt, timeout");
- status = SWAP16(dma->scb.status);
-
- DEB(DEB_INTS, printk(KERN_DEBUG
- "%s: i596 interrupt, IRQ %d, status %4.4x.\n",
- dev->name, dev->irq, status));
-
- ack_cmd = status & 0xf000;
-
- if (!ack_cmd) {
- DEB(DEB_ERRORS, printk(KERN_DEBUG
- "%s: interrupt with no events\n",
- dev->name));
- spin_unlock (&lp->lock);
- return IRQ_NONE;
- }
-
- if ((status & 0x8000) || (status & 0x2000)) {
- struct i596_cmd *ptr;
-
- if ((status & 0x8000))
- DEB(DEB_INTS,
- printk(KERN_DEBUG
- "%s: i596 interrupt completed command.\n",
- dev->name));
- if ((status & 0x2000))
- DEB(DEB_INTS,
- printk(KERN_DEBUG
- "%s: i596 interrupt command unit inactive %x.\n",
- dev->name, status & 0x0700));
-
- while (lp->cmd_head != NULL) {
- DMA_INV(dev, lp->cmd_head, sizeof(struct i596_cmd));
- if (!(lp->cmd_head->status & SWAP16(STAT_C)))
- break;
-
- ptr = lp->cmd_head;
-
- DEB(DEB_STATUS,
- printk(KERN_DEBUG
- "cmd_head->status = %04x, ->command = %04x\n",
- SWAP16(lp->cmd_head->status),
- SWAP16(lp->cmd_head->command)));
- lp->cmd_head = ptr->v_next;
- lp->cmd_backlog--;
-
- switch (SWAP16(ptr->command) & 0x7) {
- case CmdTx:
- {
- struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
- struct sk_buff *skb = tx_cmd->skb;
-
- if (ptr->status & SWAP16(STAT_OK)) {
- DEB(DEB_TXADDR,
- print_eth(skb->data, "tx-done"));
- } else {
- dev->stats.tx_errors++;
- if (ptr->status & SWAP16(0x0020))
- dev->stats.collisions++;
- if (!(ptr->status & SWAP16(0x0040)))
- dev->stats.tx_heartbeat_errors++;
- if (ptr->status & SWAP16(0x0400))
- dev->stats.tx_carrier_errors++;
- if (ptr->status & SWAP16(0x0800))
- dev->stats.collisions++;
- if (ptr->status & SWAP16(0x1000))
- dev->stats.tx_aborted_errors++;
- }
- dma_unmap_single(dev->dev.parent,
- tx_cmd->dma_addr,
- skb->len, DMA_TO_DEVICE);
- dev_kfree_skb_irq(skb);
-
- tx_cmd->cmd.command = 0; /* Mark free */
- break;
- }
- case CmdTDR:
- {
- unsigned short status = SWAP16(((struct tdr_cmd *)ptr)->status);
-
- if (status & 0x8000) {
- DEB(DEB_ANY,
- printk(KERN_DEBUG "%s: link ok.\n",
- dev->name));
- } else {
- if (status & 0x4000)
- printk(KERN_ERR
- "%s: Transceiver problem.\n",
- dev->name);
- if (status & 0x2000)
- printk(KERN_ERR
- "%s: Termination problem.\n",
- dev->name);
- if (status & 0x1000)
- printk(KERN_ERR
- "%s: Short circuit.\n",
- dev->name);
-
- DEB(DEB_TDR,
- printk(KERN_DEBUG "%s: Time %d.\n",
- dev->name, status & 0x07ff));
- }
- break;
- }
- case CmdConfigure:
- /*
- * Zap command so set_multicast_list() know
- * it is free
- */
- ptr->command = 0;
- break;
- }
- ptr->v_next = NULL;
- ptr->b_next = I596_NULL;
- DMA_WBACK(dev, ptr, sizeof(struct i596_cmd));
- lp->last_cmd = jiffies;
- }
-
- /* This mess is arranging that only the last of any outstanding
- * commands has the interrupt bit set. Should probably really
- * only add to the cmd queue when the CU is stopped.
- */
- ptr = lp->cmd_head;
- while ((ptr != NULL) && (ptr != lp->cmd_tail)) {
- struct i596_cmd *prev = ptr;
-
- ptr->command &= SWAP16(0x1fff);
- ptr = ptr->v_next;
- DMA_WBACK_INV(dev, prev, sizeof(struct i596_cmd));
- }
-
- if (lp->cmd_head != NULL)
- ack_cmd |= CUC_START;
- dma->scb.cmd = SWAP32(virt_to_dma(lp, &lp->cmd_head->status));
- DMA_WBACK_INV(dev, &dma->scb, sizeof(struct i596_scb));
- }
- if ((status & 0x1000) || (status & 0x4000)) {
- if ((status & 0x4000))
- DEB(DEB_INTS,
- printk(KERN_DEBUG
- "%s: i596 interrupt received a frame.\n",
- dev->name));
- i596_rx(dev);
- /* Only RX_START if stopped - RGH 07-07-96 */
- if (status & 0x1000) {
- if (netif_running(dev)) {
- DEB(DEB_ERRORS,
- printk(KERN_DEBUG
- "%s: i596 interrupt receive unit inactive, status 0x%x\n",
- dev->name, status));
- ack_cmd |= RX_START;
- dev->stats.rx_errors++;
- dev->stats.rx_fifo_errors++;
- rebuild_rx_bufs(dev);
- }
- }
- }
- wait_cmd(dev, dma, 100, "i596 interrupt, timeout");
- dma->scb.command = SWAP16(ack_cmd);
- DMA_WBACK(dev, &dma->scb, sizeof(struct i596_scb));
-
- /* DANGER: I suspect that some kind of interrupt
- acknowledgement aside from acking the 82596 might be needed
- here... but it's running acceptably without */
-
- ca(dev);
-
- wait_cmd(dev, dma, 100, "i596 interrupt, exit timeout");
- DEB(DEB_INTS, printk(KERN_DEBUG "%s: exiting interrupt.\n", dev->name));
-
- spin_unlock (&lp->lock);
- return IRQ_HANDLED;
-}
-
-static int i596_close(struct net_device *dev)
-{
- struct i596_private *lp = netdev_priv(dev);
- unsigned long flags;
-
- netif_stop_queue(dev);
-
- DEB(DEB_INIT,
- printk(KERN_DEBUG
- "%s: Shutting down ethercard, status was %4.4x.\n",
- dev->name, SWAP16(lp->dma->scb.status)));
-
- spin_lock_irqsave(&lp->lock, flags);
-
- wait_cmd(dev, lp->dma, 100, "close1 timed out");
- lp->dma->scb.command = SWAP16(CUC_ABORT | RX_ABORT);
- DMA_WBACK(dev, &lp->dma->scb, sizeof(struct i596_scb));
-
- ca(dev);
-
- wait_cmd(dev, lp->dma, 100, "close2 timed out");
- spin_unlock_irqrestore(&lp->lock, flags);
- DEB(DEB_STRUCT, i596_display_data(dev));
- i596_cleanup_cmd(dev, lp);
-
- free_irq(dev->irq, dev);
- remove_rx_bufs(dev);
-
- return 0;
-}
-
-/*
- * Set or clear the multicast filter for this adaptor.
- */
-
-static void set_multicast_list(struct net_device *dev)
-{
- struct i596_private *lp = netdev_priv(dev);
- struct i596_dma *dma = lp->dma;
- int config = 0, cnt;
-
- DEB(DEB_MULTI,
- printk(KERN_DEBUG
- "%s: set multicast list, %d entries, promisc %s, allmulti %s\n",
- dev->name, netdev_mc_count(dev),
- dev->flags & IFF_PROMISC ? "ON" : "OFF",
- dev->flags & IFF_ALLMULTI ? "ON" : "OFF"));
-
- if ((dev->flags & IFF_PROMISC) &&
- !(dma->cf_cmd.i596_config[8] & 0x01)) {
- dma->cf_cmd.i596_config[8] |= 0x01;
- config = 1;
- }
- if (!(dev->flags & IFF_PROMISC) &&
- (dma->cf_cmd.i596_config[8] & 0x01)) {
- dma->cf_cmd.i596_config[8] &= ~0x01;
- config = 1;
- }
- if ((dev->flags & IFF_ALLMULTI) &&
- (dma->cf_cmd.i596_config[11] & 0x20)) {
- dma->cf_cmd.i596_config[11] &= ~0x20;
- config = 1;
- }
- if (!(dev->flags & IFF_ALLMULTI) &&
- !(dma->cf_cmd.i596_config[11] & 0x20)) {
- dma->cf_cmd.i596_config[11] |= 0x20;
- config = 1;
- }
- if (config) {
- if (dma->cf_cmd.cmd.command)
- printk(KERN_INFO
- "%s: config change request already queued\n",
- dev->name);
- else {
- dma->cf_cmd.cmd.command = SWAP16(CmdConfigure);
- DMA_WBACK_INV(dev, &dma->cf_cmd, sizeof(struct cf_cmd));
- i596_add_cmd(dev, &dma->cf_cmd.cmd);
- }
- }
-
- cnt = netdev_mc_count(dev);
- if (cnt > MAX_MC_CNT) {
- cnt = MAX_MC_CNT;
- printk(KERN_NOTICE "%s: Only %d multicast addresses supported",
- dev->name, cnt);
- }
-
- if (!netdev_mc_empty(dev)) {
- struct netdev_hw_addr *ha;
- unsigned char *cp;
- struct mc_cmd *cmd;
-
- cmd = &dma->mc_cmd;
- cmd->cmd.command = SWAP16(CmdMulticastList);
- cmd->mc_cnt = SWAP16(netdev_mc_count(dev) * 6);
- cp = cmd->mc_addrs;
- netdev_for_each_mc_addr(ha, dev) {
- if (!cnt--)
- break;
- memcpy(cp, ha->addr, 6);
- if (i596_debug > 1)
- DEB(DEB_MULTI,
- printk(KERN_DEBUG
- "%s: Adding address %pM\n",
- dev->name, cp));
- cp += 6;
- }
- DMA_WBACK_INV(dev, &dma->mc_cmd, sizeof(struct mc_cmd));
- i596_add_cmd(dev, &cmd->cmd);
- }
-}