82596.c
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上传日期:2013-04-10
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文件大小:40k
- /* 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
- * performace 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/config.h>
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/string.h>
- #include <linux/ptrace.h>
- #include <linux/errno.h>
- #include <linux/ioport.h>
- #include <linux/slab.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 <asm/bitops.h>
- #include <asm/io.h>
- #include <asm/dma.h>
- #include <asm/pgtable.h>
- #include <asm/pgalloc.h>
- static char version[] __initdata =
- "82596.c $Revision: 1.5 $n";
- /* 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
- #if defined(CONFIG_MVME16x_NET) || defined(CONFIG_MVME16x_NET_MODULE)
- #define ENABLE_MVME16x_NET
- #endif
- #if defined(CONFIG_BVME6000_NET) || defined(CONFIG_BVME6000_NET_MODULE)
- #define ENABLE_BVME6000_NET
- #endif
- #if defined(CONFIG_APRICOT) || defined(CONFIG_APRICOT_MODULE)
- #define ENABLE_APRICOT
- #endif
- #ifdef ENABLE_MVME16x_NET
- #include <asm/mvme16xhw.h>
- #endif
- #ifdef ENABLE_BVME6000_NET
- #include <asm/bvme6000hw.h>
- #endif
- /*
- * Define various macros for Channel Attention, word swapping etc., dependent
- * on architecture. MVME and BVME are 680x0 based, otherwise it is Intel.
- */
- #ifdef __mc68000__
- #define WSWAPrfd(x) ((struct i596_rfd *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
- #define WSWAPrbd(x) ((struct i596_rbd *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
- #define WSWAPiscp(x) ((struct i596_iscp *)(((u32)(x)<<16) | ((((u32)(x)))>>16)))
- #define WSWAPscb(x) ((struct i596_scb *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
- #define WSWAPcmd(x) ((struct i596_cmd *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
- #define WSWAPtbd(x) ((struct i596_tbd *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
- #define WSWAPchar(x) ((char *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
- #define ISCP_BUSY 0x00010000
- #define MACH_IS_APRICOT 0
- #else
- #define WSWAPrfd(x) ((struct i596_rfd *)(x))
- #define WSWAPrbd(x) ((struct i596_rbd *)(x))
- #define WSWAPiscp(x) ((struct i596_iscp *)(x))
- #define WSWAPscb(x) ((struct i596_scb *)(x))
- #define WSWAPcmd(x) ((struct i596_cmd *)(x))
- #define WSWAPtbd(x) ((struct i596_tbd *)(x))
- #define WSWAPchar(x) ((char *)(x))
- #define ISCP_BUSY 0x0001
- #define MACH_IS_APRICOT 1
- #endif
- /*
- * 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);
- MODULE_AUTHOR("Richard Hirst");
- MODULE_DESCRIPTION("i82596 driver");
- MODULE_LICENSE("GPL");
- MODULE_PARM(i596_debug, "i");
- MODULE_PARM_DESC(i596_debug, "i82596 debug mask");
- /* 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 I596_TOTAL_SIZE 17
- #define I596_NULL ((void *)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 5
- struct i596_reg {
- unsigned short porthi;
- unsigned short portlo;
- unsigned long ca;
- };
- #define EOF 0x8000
- #define SIZE_MASK 0x3fff
- struct i596_tbd {
- unsigned short size;
- unsigned short pad;
- struct i596_tbd *next;
- char *data;
- };
- /* 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;
- struct i596_cmd *b_next; /* Address from i596 viewpoint */
- };
- struct tx_cmd {
- struct i596_cmd cmd;
- struct i596_tbd *tbd;
- unsigned short size;
- unsigned short pad;
- struct sk_buff *skb; /* So we can free it after tx */
- };
- 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;
- struct i596_rfd *b_next; /* Address from i596 viewpoint */
- struct i596_rbd *rbd;
- unsigned short count;
- unsigned short size;
- struct i596_rfd *v_next; /* Address from CPUs viewpoint */
- struct i596_rfd *v_prev;
- };
- struct i596_rbd {
- unsigned short count;
- unsigned short zero1;
- struct i596_rbd *b_next;
- unsigned char *b_data; /* Address from i596 viewpoint */
- unsigned short size;
- unsigned short zero2;
- struct sk_buff *skb;
- struct i596_rbd *v_next;
- struct i596_rbd *b_addr; /* This rbd addr from i596 view */
- unsigned char *v_data; /* Address from CPUs viewpoint */
- };
- #define TX_RING_SIZE 64
- #define RX_RING_SIZE 16
- struct i596_scb {
- unsigned short status;
- unsigned short command;
- struct i596_cmd *cmd;
- struct i596_rfd *rfd;
- unsigned long crc_err;
- unsigned long align_err;
- unsigned long resource_err;
- unsigned long over_err;
- unsigned long rcvdt_err;
- unsigned long short_err;
- unsigned short t_on;
- unsigned short t_off;
- };
- struct i596_iscp {
- unsigned long stat;
- struct i596_scb *scb;
- };
- struct i596_scp {
- unsigned long sysbus;
- unsigned long pad;
- struct i596_iscp *iscp;
- };
- struct i596_private {
- volatile struct i596_scp scp;
- volatile struct i596_iscp iscp;
- volatile struct i596_scb scb;
- struct sa_cmd sa_cmd;
- struct cf_cmd cf_cmd;
- struct tdr_cmd tdr_cmd;
- struct mc_cmd mc_cmd;
- unsigned long stat;
- int last_restart __attribute__((aligned(4)));
- struct i596_rfd *rfd_head;
- struct i596_rbd *rbd_head;
- struct i596_cmd *cmd_tail;
- struct i596_cmd *cmd_head;
- int cmd_backlog;
- unsigned long last_cmd;
- struct net_device_stats stats;
- struct i596_rfd rfds[RX_RING_SIZE];
- struct i596_rbd rbds[RX_RING_SIZE];
- struct tx_cmd tx_cmds[TX_RING_SIZE];
- struct i596_tbd tbds[TX_RING_SIZE];
- int next_tx_cmd;
- spinlock_t lock;
- };
- static char init_setup[] =
- {
- 0x8E, /* length, prefetch on */
- 0xC8, /* fifo to 8, monitor off */
- #ifdef CONFIG_VME
- 0xc0, /* don't save bad frames */
- #else
- 0x80, /* don't save bad frames */
- #endif
- 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 void i596_interrupt(int irq, void *dev_id, struct pt_regs *regs);
- static int i596_close(struct net_device *dev);
- static struct net_device_stats *i596_get_stats(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 int rx_ring_size = RX_RING_SIZE;
- static int ticks_limit = 25;
- static int max_cmd_backlog = TX_RING_SIZE-1;
- static inline void CA(struct net_device *dev)
- {
- #ifdef ENABLE_MVME16x_NET
- if (MACH_IS_MVME16x) {
- ((struct i596_reg *) dev->base_addr)->ca = 1;
- }
- #endif
- #ifdef ENABLE_BVME6000_NET
- if (MACH_IS_BVME6000) {
- volatile u32 i;
- i = *(volatile u32 *) (dev->base_addr);
- }
- #endif
- #ifdef ENABLE_APRICOT
- if (MACH_IS_APRICOT) {
- outw(0, (short) (dev->base_addr) + 4);
- }
- #endif
- }
- static inline void MPU_PORT(struct net_device *dev, int c, volatile void *x)
- {
- #ifdef ENABLE_MVME16x_NET
- if (MACH_IS_MVME16x) {
- struct i596_reg *p = (struct i596_reg *) (dev->base_addr);
- p->porthi = ((c) | (u32) (x)) & 0xffff;
- p->portlo = ((c) | (u32) (x)) >> 16;
- }
- #endif
- #ifdef ENABLE_BVME6000_NET
- if (MACH_IS_BVME6000) {
- u32 v = (u32) (c) | (u32) (x);
- v = ((u32) (v) << 16) | ((u32) (v) >> 16);
- *(volatile u32 *) dev->base_addr = v;
- udelay(1);
- *(volatile u32 *) dev->base_addr = v;
- }
- #endif
- }
- static inline int wait_istat(struct net_device *dev, struct i596_private *lp, int delcnt, char *str)
- {
- while (--delcnt && lp->iscp.stat)
- udelay(10);
- if (!delcnt) {
- printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.n",
- dev->name, str, lp->scb.status, lp->scb.command);
- return -1;
- }
- else
- return 0;
- }
- static inline int wait_cmd(struct net_device *dev, struct i596_private *lp, int delcnt, char *str)
- {
- while (--delcnt && lp->scb.command)
- udelay(10);
- if (!delcnt) {
- printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.n",
- dev->name, str, lp->scb.status, lp->scb.command);
- return -1;
- }
- else
- return 0;
- }
- static inline int wait_cfg(struct net_device *dev, struct i596_cmd *cmd, int delcnt, char *str)
- {
- volatile struct i596_cmd *c = cmd;
-
- while (--delcnt && c->command)
- udelay(10);
- if (!delcnt) {
- printk(KERN_ERR "%s: %s.n", dev->name, str);
- return -1;
- }
- else
- return 0;
- }
-
- static void i596_display_data(struct net_device *dev)
- {
- struct i596_private *lp = (struct i596_private *) dev->priv;
- struct i596_cmd *cmd;
- struct i596_rfd *rfd;
- struct i596_rbd *rbd;
- printk(KERN_ERR "lp and scp at %p, .sysbus = %08lx, .iscp = %pn",
- &lp->scp, lp->scp.sysbus, lp->scp.iscp);
- printk(KERN_ERR "iscp at %p, iscp.stat = %08lx, .scb = %pn",
- &lp->iscp, lp->iscp.stat, lp->iscp.scb);
- printk(KERN_ERR "scb at %p, scb.status = %04x, .command = %04x,"
- " .cmd = %p, .rfd = %pn",
- &lp->scb, lp->scb.status, lp->scb.command,
- lp->scb.cmd, lp->scb.rfd);
- printk(KERN_ERR " errors: crc %lx, align %lx, resource %lx,"
- " over %lx, rcvdt %lx, short %lxn",
- lp->scb.crc_err, lp->scb.align_err, lp->scb.resource_err,
- lp->scb.over_err, lp->scb.rcvdt_err, lp->scb.short_err);
- cmd = lp->cmd_head;
- while (cmd != I596_NULL) {
- printk(KERN_ERR "cmd at %p, .status = %04x, .command = %04x, .b_next = %pn",
- cmd, cmd->status, cmd->command, cmd->b_next);
- cmd = cmd->v_next;
- }
- rfd = lp->rfd_head;
- printk(KERN_ERR "rfd_head = %pn", rfd);
- do {
- printk(KERN_ERR " %p .stat %04x, .cmd %04x, b_next %p, rbd %p,"
- " count %04xn",
- rfd, rfd->stat, rfd->cmd, rfd->b_next, rfd->rbd,
- rfd->count);
- rfd = rfd->v_next;
- } while (rfd != lp->rfd_head);
- rbd = lp->rbd_head;
- printk(KERN_ERR "rbd_head = %pn", rbd);
- do {
- printk(KERN_ERR " %p .count %04x, b_next %p, b_data %p, size %04xn",
- rbd, rbd->count, rbd->b_next, rbd->b_data, rbd->size);
- rbd = rbd->v_next;
- } while (rbd != lp->rbd_head);
- }
- #if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
- static void i596_error(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct net_device *dev = dev_id;
- #ifdef ENABLE_MVME16x_NET
- if (MACH_IS_MVME16x) {
- volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
- pcc2[0x28] = 1;
- pcc2[0x2b] = 0x1d;
- }
- #endif
- #ifdef ENABLE_BVME6000_NET
- if (MACH_IS_BVME6000) {
- volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
- *ethirq = 1;
- *ethirq = 3;
- }
- #endif
- printk(KERN_ERR "%s: Error interruptn", dev->name);
- i596_display_data(dev);
- }
- #endif
- static inline void init_rx_bufs(struct net_device *dev)
- {
- struct i596_private *lp = (struct i596_private *)dev->priv;
- int i;
- struct i596_rfd *rfd;
- struct i596_rbd *rbd;
- /* First build the Receive Buffer Descriptor List */
- for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
- struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ);
- if (skb == NULL)
- panic("82596: alloc_skb() failed");
- skb->dev = dev;
- rbd->v_next = rbd+1;
- rbd->b_next = WSWAPrbd(virt_to_bus(rbd+1));
- rbd->b_addr = WSWAPrbd(virt_to_bus(rbd));
- rbd->skb = skb;
- rbd->v_data = skb->tail;
- rbd->b_data = WSWAPchar(virt_to_bus(skb->tail));
- rbd->size = PKT_BUF_SZ;
- #ifdef __mc68000__
- cache_clear(virt_to_phys(skb->tail), PKT_BUF_SZ);
- #endif
- }
- lp->rbd_head = lp->rbds;
- rbd = lp->rbds + rx_ring_size - 1;
- rbd->v_next = lp->rbds;
- rbd->b_next = WSWAPrbd(virt_to_bus(lp->rbds));
- /* Now build the Receive Frame Descriptor List */
- for (i = 0, rfd = lp->rfds; i < rx_ring_size; i++, rfd++) {
- rfd->rbd = I596_NULL;
- rfd->v_next = rfd+1;
- rfd->v_prev = rfd-1;
- rfd->b_next = WSWAPrfd(virt_to_bus(rfd+1));
- rfd->cmd = CMD_FLEX;
- }
- lp->rfd_head = lp->rfds;
- lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds));
- rfd = lp->rfds;
- rfd->rbd = lp->rbd_head;
- rfd->v_prev = lp->rfds + rx_ring_size - 1;
- rfd = lp->rfds + rx_ring_size - 1;
- rfd->v_next = lp->rfds;
- rfd->b_next = WSWAPrfd(virt_to_bus(lp->rfds));
- rfd->cmd = CMD_EOL|CMD_FLEX;
- }
- static inline void remove_rx_bufs(struct net_device *dev)
- {
- struct i596_private *lp = (struct i596_private *)dev->priv;
- struct i596_rbd *rbd;
- int i;
- for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
- if (rbd->skb == NULL)
- break;
- dev_kfree_skb(rbd->skb);
- }
- }
- static void rebuild_rx_bufs(struct net_device *dev)
- {
- struct i596_private *lp = (struct i596_private *) dev->priv;
- int i;
- /* Ensure rx frame/buffer descriptors are tidy */
- for (i = 0; i < rx_ring_size; i++) {
- lp->rfds[i].rbd = I596_NULL;
- lp->rfds[i].cmd = CMD_FLEX;
- }
- lp->rfds[rx_ring_size-1].cmd = CMD_EOL|CMD_FLEX;
- lp->rfd_head = lp->rfds;
- lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds));
- lp->rbd_head = lp->rbds;
- lp->rfds[0].rbd = WSWAPrbd(virt_to_bus(lp->rbds));
- }
- static int init_i596_mem(struct net_device *dev)
- {
- struct i596_private *lp = (struct i596_private *) dev->priv;
- #if !defined(ENABLE_MVME16x_NET) && !defined(ENABLE_BVME6000_NET)
- short ioaddr = dev->base_addr;
- #endif
- unsigned long flags;
- MPU_PORT(dev, PORT_RESET, 0);
- udelay(100); /* Wait 100us - seems to help */
- #if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
- #ifdef ENABLE_MVME16x_NET
- if (MACH_IS_MVME16x) {
- volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
- /* Disable all ints for now */
- pcc2[0x28] = 1;
- pcc2[0x2a] = 0x48;
- /* Following disables snooping. Snooping is not required
- * as we make appropriate use of non-cached pages for
- * shared data, and cache_push/cache_clear.
- */
- pcc2[0x2b] = 0x08;
- }
- #endif
- #ifdef ENABLE_BVME6000_NET
- if (MACH_IS_BVME6000) {
- volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
- *ethirq = 1;
- }
- #endif
- /* change the scp address */
- MPU_PORT(dev, PORT_ALTSCP, (void *)virt_to_bus(&lp->scp));
- #elif defined(ENABLE_APRICOT)
- {
- u32 scp = virt_to_bus(&lp->scp);
- /* change the scp address */
- outw(0, ioaddr);
- outw(0, ioaddr);
- outb(4, ioaddr + 0xf);
- outw(scp | 2, ioaddr);
- outw(scp >> 16, ioaddr);
- }
- #endif
- lp->last_cmd = jiffies;
- #ifdef ENABLE_MVME16x_NET
- if (MACH_IS_MVME16x)
- lp->scp.sysbus = 0x00000054;
- #endif
- #ifdef ENABLE_BVME6000_NET
- if (MACH_IS_BVME6000)
- lp->scp.sysbus = 0x0000004c;
- #endif
- #ifdef ENABLE_APRICOT
- if (MACH_IS_APRICOT)
- lp->scp.sysbus = 0x00440000;
- #endif
- lp->scp.iscp = WSWAPiscp(virt_to_bus(&(lp->iscp)));
- lp->iscp.scb = WSWAPscb(virt_to_bus(&(lp->scb)));
- lp->iscp.stat = ISCP_BUSY;
- lp->cmd_backlog = 0;
- lp->cmd_head = lp->scb.cmd = I596_NULL;
- #ifdef ENABLE_BVME6000_NET
- if (MACH_IS_BVME6000) {
- lp->scb.t_on = 7 * 25;
- lp->scb.t_off = 1 * 25;
- }
- #endif
- DEB(DEB_INIT,printk(KERN_DEBUG "%s: starting i82596.n", dev->name));
- #if defined(ENABLE_APRICOT)
- (void) inb(ioaddr + 0x10);
- outb(4, ioaddr + 0xf);
- #endif
- CA(dev);
- if (wait_istat(dev,lp,1000,"initialization timed out"))
- goto failed;
- DEB(DEB_INIT,printk(KERN_DEBUG "%s: i82596 initialization successfuln", dev->name));
- /* Ensure rx frame/buffer descriptors are tidy */
- rebuild_rx_bufs(dev);
- lp->scb.command = 0;
- #ifdef ENABLE_MVME16x_NET
- if (MACH_IS_MVME16x) {
- volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
- /* Enable ints, etc. now */
- pcc2[0x2a] = 0x55; /* Edge sensitive */
- pcc2[0x2b] = 0x15;
- }
- #endif
- #ifdef ENABLE_BVME6000_NET
- if (MACH_IS_BVME6000) {
- volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
- *ethirq = 3;
- }
- #endif
- DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdConfiguren", dev->name));
- memcpy(lp->cf_cmd.i596_config, init_setup, 14);
- lp->cf_cmd.cmd.command = CmdConfigure;
- i596_add_cmd(dev, &lp->cf_cmd.cmd);
- DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdSASetupn", dev->name));
- memcpy(lp->sa_cmd.eth_addr, dev->dev_addr, 6);
- lp->sa_cmd.cmd.command = CmdSASetup;
- i596_add_cmd(dev, &lp->sa_cmd.cmd);
- DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdTDRn", dev->name));
- lp->tdr_cmd.cmd.command = CmdTDR;
- i596_add_cmd(dev, &lp->tdr_cmd.cmd);
- spin_lock_irqsave (&lp->lock, flags);
- if (wait_cmd(dev,lp,1000,"timed out waiting to issue RX_START")) {
- spin_unlock_irqrestore (&lp->lock, flags);
- goto failed;
- }
- DEB(DEB_INIT,printk(KERN_DEBUG "%s: Issuing RX_STARTn", dev->name));
- lp->scb.command = RX_START;
- CA(dev);
- spin_unlock_irqrestore (&lp->lock, flags);
- if (wait_cmd(dev,lp,1000,"RX_START not processed"))
- goto failed;
- DEB(DEB_INIT,printk(KERN_DEBUG "%s: Receive unit started OKn", dev->name));
- return 0;
- failed:
- printk(KERN_CRIT "%s: Failed to initialise 82596n", dev->name);
- MPU_PORT(dev, PORT_RESET, 0);
- return -1;
- }
- static inline int i596_rx(struct net_device *dev)
- {
- struct i596_private *lp = (struct i596_private *)dev->priv;
- struct i596_rfd *rfd;
- struct i596_rbd *rbd;
- int frames = 0;
- DEB(DEB_RXFRAME,printk(KERN_DEBUG "i596_rx(), rfd_head %p, rbd_head %pn",
- lp->rfd_head, lp->rbd_head));
- rfd = lp->rfd_head; /* Ref next frame to check */
- while ((rfd->stat) & STAT_C) { /* Loop while complete frames */
- if (rfd->rbd == I596_NULL)
- rbd = I596_NULL;
- else if (rfd->rbd == lp->rbd_head->b_addr)
- rbd = lp->rbd_head;
- else {
- printk(KERN_CRIT "%s: rbd chain broken!n", dev->name);
- /* XXX Now what? */
- rbd = I596_NULL;
- }
- DEB(DEB_RXFRAME, printk(KERN_DEBUG " rfd %p, rfd.rbd %p, rfd.stat %04xn",
- rfd, rfd->rbd, rfd->stat));
-
- if (rbd != I596_NULL && ((rfd->stat) & STAT_OK)) {
- /* a good frame */
- int pkt_len = 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;
- /* Get fresh skbuff to replace filled one. */
- newskb = dev_alloc_skb(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;
- newskb->dev = dev;
- rbd->v_data = newskb->tail;
- rbd->b_data = WSWAPchar(virt_to_bus(newskb->tail));
- #ifdef __mc68000__
- cache_clear(virt_to_phys(newskb->tail), PKT_BUF_SZ);
- #endif
- }
- else
- skb = dev_alloc_skb(pkt_len + 2);
- memory_squeeze:
- if (skb == NULL) {
- /* XXX tulip.c can defer packets here!! */
- printk(KERN_WARNING "%s: i596_rx Memory squeeze, dropping packet.n", dev->name);
- lp->stats.rx_dropped++;
- }
- else {
- skb->dev = dev;
- if (!rx_in_place) {
- /* 16 byte align the data fields */
- skb_reserve(skb, 2);
- memcpy(skb_put(skb,pkt_len), rbd->v_data, pkt_len);
- }
- skb->protocol=eth_type_trans(skb,dev);
- skb->len = pkt_len;
- #ifdef __mc68000__
- cache_clear(virt_to_phys(rbd->skb->tail),
- pkt_len);
- #endif
- netif_rx(skb);
- dev->last_rx = jiffies;
- lp->stats.rx_packets++;
- lp->stats.rx_bytes+=pkt_len;
- }
- }
- else {
- DEB(DEB_ERRORS, printk(KERN_DEBUG "%s: Error, rfd.stat = 0x%04xn",
- dev->name, rfd->stat));
- lp->stats.rx_errors++;
- if ((rfd->stat) & 0x0001)
- lp->stats.collisions++;
- if ((rfd->stat) & 0x0080)
- lp->stats.rx_length_errors++;
- if ((rfd->stat) & 0x0100)
- lp->stats.rx_over_errors++;
- if ((rfd->stat) & 0x0200)
- lp->stats.rx_fifo_errors++;
- if ((rfd->stat) & 0x0400)
- lp->stats.rx_frame_errors++;
- if ((rfd->stat) & 0x0800)
- lp->stats.rx_crc_errors++;
- if ((rfd->stat) & 0x1000)
- lp->stats.rx_length_errors++;
- }
- /* Clear the buffer descriptor count and EOF + F flags */
- if (rbd != I596_NULL && (rbd->count & 0x4000)) {
- rbd->count = 0;
- lp->rbd_head = rbd->v_next;
- }
- /* Tidy the frame descriptor, marking it as end of list */
- rfd->rbd = I596_NULL;
- rfd->stat = 0;
- rfd->cmd = CMD_EOL|CMD_FLEX;
- rfd->count = 0;
- /* Remove end-of-list from old end descriptor */
- rfd->v_prev->cmd = CMD_FLEX;
- /* Update record of next frame descriptor to process */
- lp->scb.rfd = rfd->b_next;
- lp->rfd_head = rfd->v_next;
- rfd = lp->rfd_head;
- }
- DEB(DEB_RXFRAME,printk(KERN_DEBUG "frames %dn", 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 != I596_NULL) {
- ptr = lp->cmd_head;
- lp->cmd_head = ptr->v_next;
- lp->cmd_backlog--;
- switch ((ptr->command) & 0x7) {
- case CmdTx:
- {
- struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
- struct sk_buff *skb = tx_cmd->skb;
- dev_kfree_skb(skb);
- lp->stats.tx_errors++;
- lp->stats.tx_aborted_errors++;
- ptr->v_next = ptr->b_next = I596_NULL;
- tx_cmd->cmd.command = 0; /* Mark as free */
- break;
- }
- default:
- ptr->v_next = ptr->b_next = I596_NULL;
- }
- }
- wait_cmd(dev,lp,100,"i596_cleanup_cmd timed out");
- lp->scb.cmd = I596_NULL;
- }
- static inline void i596_reset(struct net_device *dev, struct i596_private *lp, int ioaddr)
- {
- unsigned long flags;
- DEB(DEB_RESET,printk(KERN_DEBUG "i596_resetn"));
- spin_lock_irqsave (&lp->lock, flags);
- wait_cmd(dev,lp,100,"i596_reset timed out");
- netif_stop_queue(dev);
- lp->scb.command = CUC_ABORT | RX_ABORT;
- CA(dev);
- /* wait for shutdown */
- wait_cmd(dev,lp,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 = (struct i596_private *) dev->priv;
- int ioaddr = dev->base_addr;
- unsigned long flags;
- DEB(DEB_ADDCMD,printk(KERN_DEBUG "i596_add_cmdn"));
- cmd->status = 0;
- cmd->command |= (CMD_EOL | CMD_INTR);
- cmd->v_next = cmd->b_next = I596_NULL;
- spin_lock_irqsave (&lp->lock, flags);
- if (lp->cmd_head != I596_NULL) {
- lp->cmd_tail->v_next = cmd;
- lp->cmd_tail->b_next = WSWAPcmd(virt_to_bus(&cmd->status));
- } else {
- lp->cmd_head = cmd;
- wait_cmd(dev,lp,100,"i596_add_cmd timed out");
- lp->scb.cmd = WSWAPcmd(virt_to_bus(&cmd->status));
- lp->scb.command = CUC_START;
- 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_NOTICE "%s: command unit timed out, status resetting.n", dev->name);
- i596_reset(dev, lp, ioaddr);
- }
- }
- static int i596_open(struct net_device *dev)
- {
- int res = 0;
- DEB(DEB_OPEN,printk(KERN_DEBUG "%s: i596_open() irq %d.n", dev->name, dev->irq));
- if (request_irq(dev->irq, &i596_interrupt, 0, "i82596", dev)) {
- printk(KERN_ERR "%s: IRQ %d not freen", dev->name, dev->irq);
- return -EAGAIN;
- }
- #ifdef ENABLE_MVME16x_NET
- if (MACH_IS_MVME16x) {
- if (request_irq(0x56, &i596_error, 0, "i82596_error", dev))
- return -EAGAIN;
- }
- #endif
- init_rx_bufs(dev);
- netif_start_queue(dev);
- MOD_INC_USE_COUNT;
- /* Initialize the 82596 memory */
- if (init_i596_mem(dev)) {
- res = -EAGAIN;
- free_irq(dev->irq, dev);
- }
- return res;
- }
- static void i596_tx_timeout (struct net_device *dev)
- {
- struct i596_private *lp = (struct i596_private *) dev->priv;
- int ioaddr = dev->base_addr;
- /* Transmitter timeout, serious problems. */
- DEB(DEB_ERRORS,printk(KERN_ERR "%s: transmit timed out, status resetting.n",
- dev->name));
- lp->stats.tx_errors++;
- /* Try to restart the adaptor */
- if (lp->last_restart == lp->stats.tx_packets) {
- DEB(DEB_ERRORS,printk(KERN_ERR "Resetting board.n"));
- /* Shutdown and restart */
- i596_reset (dev, lp, ioaddr);
- } else {
- /* Issue a channel attention signal */
- DEB(DEB_ERRORS,printk(KERN_ERR "Kicking board.n"));
- lp->scb.command = CUC_START | RX_START;
- CA (dev);
- lp->last_restart = lp->stats.tx_packets;
- }
- dev->trans_start = jiffies;
- netif_wake_queue (dev);
- }
- static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev)
- {
- struct i596_private *lp = (struct i596_private *) dev->priv;
- struct tx_cmd *tx_cmd;
- struct i596_tbd *tbd;
- short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
- dev->trans_start = jiffies;
- DEB(DEB_STARTTX,printk(KERN_DEBUG "%s: i596_start_xmit(%x,%x) calledn", dev->name,
- skb->len, (unsigned int)skb->data));
- netif_stop_queue(dev);
- tx_cmd = lp->tx_cmds + lp->next_tx_cmd;
- tbd = lp->tbds + lp->next_tx_cmd;
- if (tx_cmd->cmd.command) {
- printk(KERN_NOTICE "%s: xmit ring full, dropping packet.n",
- dev->name);
- lp->stats.tx_dropped++;
- dev_kfree_skb(skb);
- } else {
- if (++lp->next_tx_cmd == TX_RING_SIZE)
- lp->next_tx_cmd = 0;
- tx_cmd->tbd = WSWAPtbd(virt_to_bus(tbd));
- tbd->next = I596_NULL;
- tx_cmd->cmd.command = CMD_FLEX | CmdTx;
- tx_cmd->skb = skb;
- tx_cmd->pad = 0;
- tx_cmd->size = 0;
- tbd->pad = 0;
- tbd->size = EOF | length;
- tbd->data = WSWAPchar(virt_to_bus(skb->data));
- #ifdef __mc68000__
- cache_push(virt_to_phys(skb->data), length);
- #endif
- DEB(DEB_TXADDR,print_eth(skb->data, "tx-queued"));
- i596_add_cmd(dev, &tx_cmd->cmd);
- lp->stats.tx_packets++;
- lp->stats.tx_bytes += length;
- }
- netif_start_queue(dev);
- return 0;
- }
- static void print_eth(unsigned char *add, char *str)
- {
- int i;
- printk(KERN_DEBUG "i596 0x%p, ", add);
- for (i = 0; i < 6; i++)
- printk(" %02X", add[i + 6]);
- printk(" -->");
- for (i = 0; i < 6; i++)
- printk(" %02X", add[i]);
- printk(" %02X%02X, %sn", add[12], add[13], str);
- }
- int __init i82596_probe(struct net_device *dev)
- {
- int i;
- struct i596_private *lp;
- char eth_addr[8];
- static int probed;
- if (probed)
- return -ENODEV;
- probed++;
- #ifdef ENABLE_MVME16x_NET
- if (MACH_IS_MVME16x) {
- if (mvme16x_config & MVME16x_CONFIG_NO_ETHERNET) {
- printk(KERN_NOTICE "Ethernet probe disabled - chip not presentn");
- return -ENODEV;
- }
- memcpy(eth_addr, (void *) 0xfffc1f2c, 6); /* YUCK! Get addr from NOVRAM */
- dev->base_addr = MVME_I596_BASE;
- dev->irq = (unsigned) MVME16x_IRQ_I596;
- }
- #endif
- #ifdef ENABLE_BVME6000_NET
- if (MACH_IS_BVME6000) {
- volatile unsigned char *rtc = (unsigned char *) BVME_RTC_BASE;
- unsigned char msr = rtc[3];
- int i;
- rtc[3] |= 0x80;
- for (i = 0; i < 6; i++)
- eth_addr[i] = rtc[i * 4 + 7]; /* Stored in RTC RAM at offset 1 */
- rtc[3] = msr;
- dev->base_addr = BVME_I596_BASE;
- dev->irq = (unsigned) BVME_IRQ_I596;
- }
- #endif
- #ifdef ENABLE_APRICOT
- {
- int checksum = 0;
- int ioaddr = 0x300;
- /* this is easy the ethernet interface can only be at 0x300 */
- /* first check nothing is already registered here */
- if (!request_region(ioaddr, I596_TOTAL_SIZE, dev->name)) {
- printk(KERN_ERR "82596: IO address 0x%04x in usen", ioaddr);
- return -EBUSY;
- }
- for (i = 0; i < 8; i++) {
- eth_addr[i] = inb(ioaddr + 8 + i);
- checksum += eth_addr[i];
- }
- /* checksum is a multiple of 0x100, got this wrong first time
- some machines have 0x100, some 0x200. The DOS driver doesn't
- even bother with the checksum.
- Some other boards trip the checksum.. but then appear as
- ether address 0. Trap these - AC */
- if ((checksum % 0x100) ||
- (memcmp(eth_addr, "x00x00x49", 3) != 0)) {
- release_region(ioaddr, I596_TOTAL_SIZE);
- return -ENODEV;
- }
- dev->base_addr = ioaddr;
- dev->irq = 10;
- }
- #endif
- dev->mem_start = (int)__get_free_pages(GFP_ATOMIC, 0);
- if (!dev->mem_start) {
- #ifdef ENABLE_APRICOT
- release_region(dev->base_addr, I596_TOTAL_SIZE);
- #endif
- return -ENOMEM;
- }
- ether_setup(dev);
- DEB(DEB_PROBE,printk(KERN_INFO "%s: 82596 at %#3lx,", dev->name, dev->base_addr));
- for (i = 0; i < 6; i++)
- DEB(DEB_PROBE,printk(" %2.2X", dev->dev_addr[i] = eth_addr[i]));
- DEB(DEB_PROBE,printk(" IRQ %d.n", dev->irq));
- DEB(DEB_PROBE,printk(KERN_INFO "%s", version));
- /* The 82596-specific entries in the device structure. */
- dev->open = i596_open;
- dev->stop = i596_close;
- dev->hard_start_xmit = i596_start_xmit;
- dev->get_stats = i596_get_stats;
- dev->set_multicast_list = set_multicast_list;
- dev->tx_timeout = i596_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
- dev->priv = (void *)(dev->mem_start);
- lp = (struct i596_private *) dev->priv;
- DEB(DEB_INIT,printk(KERN_DEBUG "%s: lp at 0x%08lx (%d bytes), lp->scb at 0x%08lxn",
- dev->name, (unsigned long)lp,
- sizeof(struct i596_private), (unsigned long)&lp->scb));
- memset((void *) lp, 0, sizeof(struct i596_private));
- #ifdef __mc68000__
- cache_push(virt_to_phys((void *)(dev->mem_start)), 4096);
- cache_clear(virt_to_phys((void *)(dev->mem_start)), 4096);
- kernel_set_cachemode((void *)(dev->mem_start), 4096, IOMAP_NOCACHE_SER);
- #endif
- lp->scb.command = 0;
- lp->scb.cmd = I596_NULL;
- lp->scb.rfd = I596_NULL;
- lp->lock = SPIN_LOCK_UNLOCKED;
- return 0;
- }
- static void i596_interrupt(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct net_device *dev = dev_id;
- struct i596_private *lp;
- short ioaddr;
- unsigned short status, ack_cmd = 0;
- #ifdef ENABLE_BVME6000_NET
- if (MACH_IS_BVME6000) {
- if (*(char *) BVME_LOCAL_IRQ_STAT & BVME_ETHERR) {
- i596_error(irq, dev_id, regs);
- return;
- }
- }
- #endif
- if (dev == NULL) {
- printk(KERN_ERR "i596_interrupt(): irq %d for unknown device.n", irq);
- return;
- }
- ioaddr = dev->base_addr;
- lp = (struct i596_private *) dev->priv;
- spin_lock (&lp->lock);
- wait_cmd(dev,lp,100,"i596 interrupt, timeout");
- status = lp->scb.status;
- DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt, IRQ %d, status %4.4x.n",
- dev->name, irq, status));
- ack_cmd = status & 0xf000;
- 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 != I596_NULL) && (lp->cmd_head->status & STAT_C)) {
- ptr = lp->cmd_head;
- DEB(DEB_STATUS,printk(KERN_DEBUG "cmd_head->status = %04x, ->command = %04xn",
- lp->cmd_head->status, lp->cmd_head->command));
- lp->cmd_head = ptr->v_next;
- lp->cmd_backlog--;
- switch ((ptr->command) & 0x7) {
- case CmdTx:
- {
- struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
- struct sk_buff *skb = tx_cmd->skb;
- if ((ptr->status) & STAT_OK) {
- DEB(DEB_TXADDR,print_eth(skb->data, "tx-done"));
- } else {
- lp->stats.tx_errors++;
- if ((ptr->status) & 0x0020)
- lp->stats.collisions++;
- if (!((ptr->status) & 0x0040))
- lp->stats.tx_heartbeat_errors++;
- if ((ptr->status) & 0x0400)
- lp->stats.tx_carrier_errors++;
- if ((ptr->status) & 0x0800)
- lp->stats.collisions++;
- if ((ptr->status) & 0x1000)
- lp->stats.tx_aborted_errors++;
- }
- dev_kfree_skb_irq(skb);
- tx_cmd->cmd.command = 0; /* Mark free */
- break;
- }
- case CmdTDR:
- {
- unsigned short status = ((struct tdr_cmd *)ptr)->status;
- if (status & 0x8000) {
- DEB(DEB_TDR,printk(KERN_INFO "%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_INFO "%s: Time %d.n", dev->name, status & 0x07ff));
- }
- break;
- }
- case CmdConfigure:
- case CmdMulticastList:
- /* Zap command so set_multicast_list() knows it is free */
- ptr->command = 0;
- break;
- }
- ptr->v_next = ptr->b_next = I596_NULL;
- lp->last_cmd = jiffies;
- }
- ptr = lp->cmd_head;
- while ((ptr != I596_NULL) && (ptr != lp->cmd_tail)) {
- ptr->command &= 0x1fff;
- ptr = ptr->v_next;
- }
- if ((lp->cmd_head != I596_NULL))
- ack_cmd |= CUC_START;
- lp->scb.cmd = WSWAPcmd(virt_to_bus(&lp->cmd_head->status));
- }
- 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_ERR "%s: i596 interrupt receive unit inactive, status 0x%xn", dev->name, status));
- ack_cmd |= RX_START;
- lp->stats.rx_errors++;
- lp->stats.rx_fifo_errors++;
- rebuild_rx_bufs(dev);
- }
- }
- }
- wait_cmd(dev,lp,100,"i596 interrupt, timeout");
- lp->scb.command = ack_cmd;
- #ifdef ENABLE_MVME16x_NET
- if (MACH_IS_MVME16x) {
- /* Ack the interrupt */
- volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
- pcc2[0x2a] |= 0x08;
- }
- #endif
- #ifdef ENABLE_BVME6000_NET
- if (MACH_IS_BVME6000) {
- volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
- *ethirq = 1;
- *ethirq = 3;
- }
- #endif
- #ifdef ENABLE_APRICOT
- (void) inb(ioaddr + 0x10);
- outb(4, ioaddr + 0xf);
- #endif
- CA(dev);
- DEB(DEB_INTS,printk(KERN_DEBUG "%s: exiting interrupt.n", dev->name));
- spin_unlock (&lp->lock);
- return;
- }
- static int i596_close(struct net_device *dev)
- {
- struct i596_private *lp = (struct i596_private *) dev->priv;
- unsigned long flags;
- netif_stop_queue(dev);
- DEB(DEB_INIT,printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x.n",
- dev->name, lp->scb.status));
- save_flags(flags);
- cli();
- wait_cmd(dev,lp,100,"close1 timed out");
- lp->scb.command = CUC_ABORT | RX_ABORT;
- CA(dev);
- wait_cmd(dev,lp,100,"close2 timed out");
- restore_flags(flags);
- DEB(DEB_STRUCT,i596_display_data(dev));
- i596_cleanup_cmd(dev,lp);
- #ifdef ENABLE_MVME16x_NET
- if (MACH_IS_MVME16x) {
- volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
- /* Disable all ints */
- pcc2[0x28] = 1;
- pcc2[0x2a] = 0x40;
- pcc2[0x2b] = 0x40; /* Set snooping bits now! */
- }
- #endif
- #ifdef ENABLE_BVME6000_NET
- if (MACH_IS_BVME6000) {
- volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
- *ethirq = 1;
- }
- #endif
- free_irq(dev->irq, dev);
- remove_rx_bufs(dev);
- MOD_DEC_USE_COUNT;
- return 0;
- }
- static struct net_device_stats *
- i596_get_stats(struct net_device *dev)
- {
- struct i596_private *lp = (struct i596_private *) dev->priv;
- return &lp->stats;
- }
- /*
- * Set or clear the multicast filter for this adaptor.
- */
- static void set_multicast_list(struct net_device *dev)
- {
- struct i596_private *lp = (struct i596_private *) dev->priv;
- int config = 0, cnt;
- DEB(DEB_MULTI,printk(KERN_DEBUG "%s: set multicast list, %d entries, promisc %s, allmulti %sn",
- dev->name, dev->mc_count,
- dev->flags & IFF_PROMISC ? "ON" : "OFF",
- dev->flags & IFF_ALLMULTI ? "ON" : "OFF"));
- if (wait_cfg(dev, &lp->cf_cmd.cmd, 1000, "config change request timed out"))
- return;
- if ((dev->flags & IFF_PROMISC) && !(lp->cf_cmd.i596_config[8] & 0x01)) {
- lp->cf_cmd.i596_config[8] |= 0x01;
- config = 1;
- }
- if (!(dev->flags & IFF_PROMISC) && (lp->cf_cmd.i596_config[8] & 0x01)) {
- lp->cf_cmd.i596_config[8] &= ~0x01;
- config = 1;
- }
- if ((dev->flags & IFF_ALLMULTI) && (lp->cf_cmd.i596_config[11] & 0x20)) {
- lp->cf_cmd.i596_config[11] &= ~0x20;
- config = 1;
- }
- if (!(dev->flags & IFF_ALLMULTI) && !(lp->cf_cmd.i596_config[11] & 0x20)) {
- lp->cf_cmd.i596_config[11] |= 0x20;
- config = 1;
- }
- if (config) {
- lp->cf_cmd.cmd.command = CmdConfigure;
- i596_add_cmd(dev, &lp->cf_cmd.cmd);
- }
- cnt = dev->mc_count;
- if (cnt > MAX_MC_CNT)
- {
- cnt = MAX_MC_CNT;
- printk(KERN_ERR "%s: Only %d multicast addresses supported",
- dev->name, cnt);
- }
-
- if (dev->mc_count > 0) {
- struct dev_mc_list *dmi;
- unsigned char *cp;
- struct mc_cmd *cmd;
- if (wait_cfg(dev, &lp->mc_cmd.cmd, 1000, "multicast list change request timed out"))
- return;
- cmd = &lp->mc_cmd;
- cmd->cmd.command = CmdMulticastList;
- cmd->mc_cnt = dev->mc_count * 6;
- cp = cmd->mc_addrs;
- for (dmi = dev->mc_list; cnt && dmi != NULL; dmi = dmi->next, cnt--, cp += 6) {
- memcpy(cp, dmi->dmi_addr, 6);
- if (i596_debug > 1)
- DEB(DEB_MULTI,printk(KERN_INFO "%s: Adding address %02x:%02x:%02x:%02x:%02x:%02xn",
- dev->name, cp[0],cp[1],cp[2],cp[3],cp[4],cp[5]));
- }
- i596_add_cmd(dev, &cmd->cmd);
- }
- }
- #ifdef MODULE
- static struct net_device dev_82596 = { init: i82596_probe };
- #ifdef ENABLE_APRICOT
- static int io = 0x300;
- static int irq = 10;
- MODULE_PARM(irq, "i");
- MODULE_PARM_DESC(irq, "Apricot IRQ number");
- #endif
- MODULE_PARM(debug, "i");
- MODULE_PARM_DESC(debug, "i82596 debug mask");
- static int debug = -1;
- int init_module(void)
- {
- #ifdef ENABLE_APRICOT
- dev_82596.base_addr = io;
- dev_82596.irq = irq;
- #endif
- if (debug >= 0)
- i596_debug = debug;
- if (register_netdev(&dev_82596) != 0)
- return -EIO;
- return 0;
- }
- void cleanup_module(void)
- {
- unregister_netdev(&dev_82596);
- #ifdef __mc68000__
- /* XXX This assumes default cache mode to be IOMAP_FULL_CACHING,
- * XXX which may be invalid (CONFIG_060_WRITETHROUGH)
- */
- kernel_set_cachemode((void *)(dev_82596.mem_start), 4096,
- IOMAP_FULL_CACHING);
- #endif
- free_page ((u32)(dev_82596.mem_start));
- dev_82596.priv = NULL;
- #ifdef ENABLE_APRICOT
- /* If we don't do this, we can't re-insmod it later. */
- release_region(dev_82596.base_addr, I596_TOTAL_SIZE);
- #endif
- }
- #endif /* MODULE */
- /*
- * Local variables:
- * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c 82596.c"
- * End:
- */