1 /* 82596.c: A generic 82596 ethernet driver for linux. */
4 Written 1994 by Mark Evans.
5 This driver is for the Apricot 82596 bus-master interface
7 Modularised 12/94 Mark Evans
10 Modified to support the 82596 ethernet chips on 680x0 VME boards.
11 by Richard Hirst <richard@sleepie.demon.co.uk>
14 980825: Changed to receive directly in to sk_buffs which are
15 allocated at open() time. Eliminates copy on incoming frames
16 (small ones are still copied). Shared data now held in a
17 non-cached page, so we can run on 68060 in copyback mode.
20 * look at deferring rx frames rather than discarding (as per tulip)
21 * handle tx ring full as per tulip
22 * performace test to tune rx_copybreak
24 Most of my modifications relate to the braindead big-endian
25 implementation by Intel. When the i596 is operating in
26 'big-endian' mode, it thinks a 32 bit value of 0x12345678
27 should be stored as 0x56781234. This is a real pain, when
28 you have linked lists which are shared by the 680x0 and the
32 Written 1993 by Donald Becker.
33 Copyright 1993 United States Government as represented by the Director,
34 National Security Agency. This software may only be used and distributed
35 according to the terms of the GNU General Public License as modified by SRC,
36 incorporated herein by reference.
38 The author may be reached as becker@scyld.com, or C/O
39 Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
43 #include <linux/module.h>
44 #include <linux/kernel.h>
45 #include <linux/string.h>
46 #include <linux/errno.h>
47 #include <linux/ioport.h>
48 #include <linux/slab.h>
49 #include <linux/interrupt.h>
50 #include <linux/delay.h>
51 #include <linux/netdevice.h>
52 #include <linux/etherdevice.h>
53 #include <linux/skbuff.h>
54 #include <linux/init.h>
55 #include <linux/bitops.h>
59 #include <asm/pgtable.h>
60 #include <asm/cacheflush.h>
62 static char version[] __initdata =
63 "82596.c $Revision: 1.5 $\n";
65 #define DRV_NAME "82596"
70 #define DEB_INIT 0x0001
71 #define DEB_PROBE 0x0002
72 #define DEB_SERIOUS 0x0004
73 #define DEB_ERRORS 0x0008
74 #define DEB_MULTI 0x0010
75 #define DEB_TDR 0x0020
76 #define DEB_OPEN 0x0040
77 #define DEB_RESET 0x0080
78 #define DEB_ADDCMD 0x0100
79 #define DEB_STATUS 0x0200
80 #define DEB_STARTTX 0x0400
81 #define DEB_RXADDR 0x0800
82 #define DEB_TXADDR 0x1000
83 #define DEB_RXFRAME 0x2000
84 #define DEB_INTS 0x4000
85 #define DEB_STRUCT 0x8000
86 #define DEB_ANY 0xffff
89 #define DEB(x,y) if (i596_debug & (x)) y
92 #if defined(CONFIG_MVME16x_NET) || defined(CONFIG_MVME16x_NET_MODULE)
93 #define ENABLE_MVME16x_NET
95 #if defined(CONFIG_BVME6000_NET) || defined(CONFIG_BVME6000_NET_MODULE)
96 #define ENABLE_BVME6000_NET
98 #if defined(CONFIG_APRICOT) || defined(CONFIG_APRICOT_MODULE)
99 #define ENABLE_APRICOT
102 #ifdef ENABLE_MVME16x_NET
103 #include <asm/mvme16xhw.h>
105 #ifdef ENABLE_BVME6000_NET
106 #include <asm/bvme6000hw.h>
110 * Define various macros for Channel Attention, word swapping etc., dependent
111 * on architecture. MVME and BVME are 680x0 based, otherwise it is Intel.
115 #define WSWAPrfd(x) ((struct i596_rfd *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
116 #define WSWAPrbd(x) ((struct i596_rbd *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
117 #define WSWAPiscp(x) ((struct i596_iscp *)(((u32)(x)<<16) | ((((u32)(x)))>>16)))
118 #define WSWAPscb(x) ((struct i596_scb *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
119 #define WSWAPcmd(x) ((struct i596_cmd *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
120 #define WSWAPtbd(x) ((struct i596_tbd *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
121 #define WSWAPchar(x) ((char *) (((u32)(x)<<16) | ((((u32)(x)))>>16)))
122 #define ISCP_BUSY 0x00010000
123 #define MACH_IS_APRICOT 0
125 #define WSWAPrfd(x) ((struct i596_rfd *)(x))
126 #define WSWAPrbd(x) ((struct i596_rbd *)(x))
127 #define WSWAPiscp(x) ((struct i596_iscp *)(x))
128 #define WSWAPscb(x) ((struct i596_scb *)(x))
129 #define WSWAPcmd(x) ((struct i596_cmd *)(x))
130 #define WSWAPtbd(x) ((struct i596_tbd *)(x))
131 #define WSWAPchar(x) ((char *)(x))
132 #define ISCP_BUSY 0x0001
133 #define MACH_IS_APRICOT 1
137 * The MPU_PORT command allows direct access to the 82596. With PORT access
138 * the following commands are available (p5-18). The 32-bit port command
139 * must be word-swapped with the most significant word written first.
140 * This only applies to VME boards.
142 #define PORT_RESET 0x00 /* reset 82596 */
143 #define PORT_SELFTEST 0x01 /* selftest */
144 #define PORT_ALTSCP 0x02 /* alternate SCB address */
145 #define PORT_ALTDUMP 0x03 /* Alternate DUMP address */
147 static int i596_debug = (DEB_SERIOUS|DEB_PROBE);
149 MODULE_AUTHOR("Richard Hirst");
150 MODULE_DESCRIPTION("i82596 driver");
151 MODULE_LICENSE("GPL");
153 module_param(i596_debug, int, 0);
154 MODULE_PARM_DESC(i596_debug, "i82596 debug mask");
157 /* Copy frames shorter than rx_copybreak, otherwise pass on up in
158 * a full sized sk_buff. Value of 100 stolen from tulip.c (!alpha).
160 static int rx_copybreak = 100;
162 #define PKT_BUF_SZ 1536
163 #define MAX_MC_CNT 64
165 #define I596_TOTAL_SIZE 17
167 #define I596_NULL ((void *)0xffffffff)
169 #define CMD_EOL 0x8000 /* The last command of the list, stop. */
170 #define CMD_SUSP 0x4000 /* Suspend after doing cmd. */
171 #define CMD_INTR 0x2000 /* Interrupt after doing cmd. */
173 #define CMD_FLEX 0x0008 /* Enable flexible memory model */
176 CmdNOp = 0, CmdSASetup = 1, CmdConfigure = 2, CmdMulticastList = 3,
177 CmdTx = 4, CmdTDR = 5, CmdDump = 6, CmdDiagnose = 7
180 #define STAT_C 0x8000 /* Set to 0 after execution */
181 #define STAT_B 0x4000 /* Command being executed */
182 #define STAT_OK 0x2000 /* Command executed ok */
183 #define STAT_A 0x1000 /* Command aborted */
185 #define CUC_START 0x0100
186 #define CUC_RESUME 0x0200
187 #define CUC_SUSPEND 0x0300
188 #define CUC_ABORT 0x0400
189 #define RX_START 0x0010
190 #define RX_RESUME 0x0020
191 #define RX_SUSPEND 0x0030
192 #define RX_ABORT 0x0040
198 unsigned short porthi;
199 unsigned short portlo;
204 #define SIZE_MASK 0x3fff
209 struct i596_tbd *next;
213 /* The command structure has two 'next' pointers; v_next is the address of
214 * the next command as seen by the CPU, b_next is the address of the next
215 * command as seen by the 82596. The b_next pointer, as used by the 82596
216 * always references the status field of the next command, rather than the
217 * v_next field, because the 82596 is unaware of v_next. It may seem more
218 * logical to put v_next at the end of the structure, but we cannot do that
219 * because the 82596 expects other fields to be there, depending on command
224 struct i596_cmd *v_next; /* Address from CPUs viewpoint */
225 unsigned short status;
226 unsigned short command;
227 struct i596_cmd *b_next; /* Address from i596 viewpoint */
232 struct i596_tbd *tbd;
235 struct sk_buff *skb; /* So we can free it after tx */
240 unsigned short status;
247 char mc_addrs[MAX_MC_CNT*6];
257 char i596_config[16];
263 struct i596_rfd *b_next; /* Address from i596 viewpoint */
264 struct i596_rbd *rbd;
265 unsigned short count;
267 struct i596_rfd *v_next; /* Address from CPUs viewpoint */
268 struct i596_rfd *v_prev;
272 unsigned short count;
273 unsigned short zero1;
274 struct i596_rbd *b_next;
275 unsigned char *b_data; /* Address from i596 viewpoint */
277 unsigned short zero2;
279 struct i596_rbd *v_next;
280 struct i596_rbd *b_addr; /* This rbd addr from i596 view */
281 unsigned char *v_data; /* Address from CPUs viewpoint */
284 #define TX_RING_SIZE 64
285 #define RX_RING_SIZE 16
288 unsigned short status;
289 unsigned short command;
290 struct i596_cmd *cmd;
291 struct i596_rfd *rfd;
292 unsigned long crc_err;
293 unsigned long align_err;
294 unsigned long resource_err;
295 unsigned long over_err;
296 unsigned long rcvdt_err;
297 unsigned long short_err;
299 unsigned short t_off;
304 struct i596_scb *scb;
308 unsigned long sysbus;
310 struct i596_iscp *iscp;
313 struct i596_private {
314 volatile struct i596_scp scp;
315 volatile struct i596_iscp iscp;
316 volatile struct i596_scb scb;
317 struct sa_cmd sa_cmd;
318 struct cf_cmd cf_cmd;
319 struct tdr_cmd tdr_cmd;
320 struct mc_cmd mc_cmd;
322 int last_restart __attribute__((aligned(4)));
323 struct i596_rfd *rfd_head;
324 struct i596_rbd *rbd_head;
325 struct i596_cmd *cmd_tail;
326 struct i596_cmd *cmd_head;
328 unsigned long last_cmd;
329 struct i596_rfd rfds[RX_RING_SIZE];
330 struct i596_rbd rbds[RX_RING_SIZE];
331 struct tx_cmd tx_cmds[TX_RING_SIZE];
332 struct i596_tbd tbds[TX_RING_SIZE];
337 static char init_setup[] =
339 0x8E, /* length, prefetch on */
340 0xC8, /* fifo to 8, monitor off */
342 0xc0, /* don't save bad frames */
344 0x80, /* don't save bad frames */
346 0x2E, /* No source address insertion, 8 byte preamble */
347 0x00, /* priority and backoff defaults */
348 0x60, /* interframe spacing */
349 0x00, /* slot time LSB */
350 0xf2, /* slot time and retries */
351 0x00, /* promiscuous mode */
352 0x00, /* collision detect */
353 0x40, /* minimum frame length */
356 0x7f /* *multi IA */ };
358 static int i596_open(struct net_device *dev);
359 static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev);
360 static irqreturn_t i596_interrupt(int irq, void *dev_id);
361 static int i596_close(struct net_device *dev);
362 static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd);
363 static void i596_tx_timeout (struct net_device *dev);
364 static void print_eth(unsigned char *buf, char *str);
365 static void set_multicast_list(struct net_device *dev);
367 static int rx_ring_size = RX_RING_SIZE;
368 static int ticks_limit = 25;
369 static int max_cmd_backlog = TX_RING_SIZE-1;
372 static inline void CA(struct net_device *dev)
374 #ifdef ENABLE_MVME16x_NET
375 if (MACH_IS_MVME16x) {
376 ((struct i596_reg *) dev->base_addr)->ca = 1;
379 #ifdef ENABLE_BVME6000_NET
380 if (MACH_IS_BVME6000) {
383 i = *(volatile u32 *) (dev->base_addr);
386 #ifdef ENABLE_APRICOT
387 if (MACH_IS_APRICOT) {
388 outw(0, (short) (dev->base_addr) + 4);
394 static inline void MPU_PORT(struct net_device *dev, int c, volatile void *x)
396 #ifdef ENABLE_MVME16x_NET
397 if (MACH_IS_MVME16x) {
398 struct i596_reg *p = (struct i596_reg *) (dev->base_addr);
399 p->porthi = ((c) | (u32) (x)) & 0xffff;
400 p->portlo = ((c) | (u32) (x)) >> 16;
403 #ifdef ENABLE_BVME6000_NET
404 if (MACH_IS_BVME6000) {
405 u32 v = (u32) (c) | (u32) (x);
406 v = ((u32) (v) << 16) | ((u32) (v) >> 16);
407 *(volatile u32 *) dev->base_addr = v;
409 *(volatile u32 *) dev->base_addr = v;
415 static inline int wait_istat(struct net_device *dev, struct i596_private *lp, int delcnt, char *str)
417 while (--delcnt && lp->iscp.stat)
420 printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n",
421 dev->name, str, lp->scb.status, lp->scb.command);
429 static inline int wait_cmd(struct net_device *dev, struct i596_private *lp, int delcnt, char *str)
431 while (--delcnt && lp->scb.command)
434 printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n",
435 dev->name, str, lp->scb.status, lp->scb.command);
443 static inline int wait_cfg(struct net_device *dev, struct i596_cmd *cmd, int delcnt, char *str)
445 volatile struct i596_cmd *c = cmd;
447 while (--delcnt && c->command)
450 printk(KERN_ERR "%s: %s.\n", dev->name, str);
458 static void i596_display_data(struct net_device *dev)
460 struct i596_private *lp = dev->priv;
461 struct i596_cmd *cmd;
462 struct i596_rfd *rfd;
463 struct i596_rbd *rbd;
465 printk(KERN_ERR "lp and scp at %p, .sysbus = %08lx, .iscp = %p\n",
466 &lp->scp, lp->scp.sysbus, lp->scp.iscp);
467 printk(KERN_ERR "iscp at %p, iscp.stat = %08lx, .scb = %p\n",
468 &lp->iscp, lp->iscp.stat, lp->iscp.scb);
469 printk(KERN_ERR "scb at %p, scb.status = %04x, .command = %04x,"
470 " .cmd = %p, .rfd = %p\n",
471 &lp->scb, lp->scb.status, lp->scb.command,
472 lp->scb.cmd, lp->scb.rfd);
473 printk(KERN_ERR " errors: crc %lx, align %lx, resource %lx,"
474 " over %lx, rcvdt %lx, short %lx\n",
475 lp->scb.crc_err, lp->scb.align_err, lp->scb.resource_err,
476 lp->scb.over_err, lp->scb.rcvdt_err, lp->scb.short_err);
478 while (cmd != I596_NULL) {
479 printk(KERN_ERR "cmd at %p, .status = %04x, .command = %04x, .b_next = %p\n",
480 cmd, cmd->status, cmd->command, cmd->b_next);
484 printk(KERN_ERR "rfd_head = %p\n", rfd);
486 printk(KERN_ERR " %p .stat %04x, .cmd %04x, b_next %p, rbd %p,"
488 rfd, rfd->stat, rfd->cmd, rfd->b_next, rfd->rbd,
491 } while (rfd != lp->rfd_head);
493 printk(KERN_ERR "rbd_head = %p\n", rbd);
495 printk(KERN_ERR " %p .count %04x, b_next %p, b_data %p, size %04x\n",
496 rbd, rbd->count, rbd->b_next, rbd->b_data, rbd->size);
498 } while (rbd != lp->rbd_head);
502 #if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
503 static irqreturn_t i596_error(int irq, void *dev_id)
505 struct net_device *dev = dev_id;
506 #ifdef ENABLE_MVME16x_NET
507 if (MACH_IS_MVME16x) {
508 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
514 #ifdef ENABLE_BVME6000_NET
515 if (MACH_IS_BVME6000) {
516 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
522 printk(KERN_ERR "%s: Error interrupt\n", dev->name);
523 i596_display_data(dev);
528 static inline void init_rx_bufs(struct net_device *dev)
530 struct i596_private *lp = dev->priv;
532 struct i596_rfd *rfd;
533 struct i596_rbd *rbd;
535 /* First build the Receive Buffer Descriptor List */
537 for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
538 struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ);
541 panic("82596: alloc_skb() failed");
544 rbd->b_next = WSWAPrbd(virt_to_bus(rbd+1));
545 rbd->b_addr = WSWAPrbd(virt_to_bus(rbd));
547 rbd->v_data = skb->data;
548 rbd->b_data = WSWAPchar(virt_to_bus(skb->data));
549 rbd->size = PKT_BUF_SZ;
551 cache_clear(virt_to_phys(skb->data), PKT_BUF_SZ);
554 lp->rbd_head = lp->rbds;
555 rbd = lp->rbds + rx_ring_size - 1;
556 rbd->v_next = lp->rbds;
557 rbd->b_next = WSWAPrbd(virt_to_bus(lp->rbds));
559 /* Now build the Receive Frame Descriptor List */
561 for (i = 0, rfd = lp->rfds; i < rx_ring_size; i++, rfd++) {
562 rfd->rbd = I596_NULL;
565 rfd->b_next = WSWAPrfd(virt_to_bus(rfd+1));
568 lp->rfd_head = lp->rfds;
569 lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds));
571 rfd->rbd = lp->rbd_head;
572 rfd->v_prev = lp->rfds + rx_ring_size - 1;
573 rfd = lp->rfds + rx_ring_size - 1;
574 rfd->v_next = lp->rfds;
575 rfd->b_next = WSWAPrfd(virt_to_bus(lp->rfds));
576 rfd->cmd = CMD_EOL|CMD_FLEX;
579 static inline void remove_rx_bufs(struct net_device *dev)
581 struct i596_private *lp = dev->priv;
582 struct i596_rbd *rbd;
585 for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
586 if (rbd->skb == NULL)
588 dev_kfree_skb(rbd->skb);
593 static void rebuild_rx_bufs(struct net_device *dev)
595 struct i596_private *lp = dev->priv;
598 /* Ensure rx frame/buffer descriptors are tidy */
600 for (i = 0; i < rx_ring_size; i++) {
601 lp->rfds[i].rbd = I596_NULL;
602 lp->rfds[i].cmd = CMD_FLEX;
604 lp->rfds[rx_ring_size-1].cmd = CMD_EOL|CMD_FLEX;
605 lp->rfd_head = lp->rfds;
606 lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds));
607 lp->rbd_head = lp->rbds;
608 lp->rfds[0].rbd = WSWAPrbd(virt_to_bus(lp->rbds));
612 static int init_i596_mem(struct net_device *dev)
614 struct i596_private *lp = dev->priv;
615 #if !defined(ENABLE_MVME16x_NET) && !defined(ENABLE_BVME6000_NET) || defined(ENABLE_APRICOT)
616 short ioaddr = dev->base_addr;
620 MPU_PORT(dev, PORT_RESET, NULL);
622 udelay(100); /* Wait 100us - seems to help */
624 #if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
625 #ifdef ENABLE_MVME16x_NET
626 if (MACH_IS_MVME16x) {
627 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
629 /* Disable all ints for now */
632 /* Following disables snooping. Snooping is not required
633 * as we make appropriate use of non-cached pages for
634 * shared data, and cache_push/cache_clear.
639 #ifdef ENABLE_BVME6000_NET
640 if (MACH_IS_BVME6000) {
641 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
647 /* change the scp address */
649 MPU_PORT(dev, PORT_ALTSCP, (void *)virt_to_bus((void *)&lp->scp));
651 #elif defined(ENABLE_APRICOT)
654 u32 scp = virt_to_bus(&lp->scp);
656 /* change the scp address */
659 outb(4, ioaddr + 0xf);
660 outw(scp | 2, ioaddr);
661 outw(scp >> 16, ioaddr);
665 lp->last_cmd = jiffies;
667 #ifdef ENABLE_MVME16x_NET
669 lp->scp.sysbus = 0x00000054;
671 #ifdef ENABLE_BVME6000_NET
672 if (MACH_IS_BVME6000)
673 lp->scp.sysbus = 0x0000004c;
675 #ifdef ENABLE_APRICOT
677 lp->scp.sysbus = 0x00440000;
680 lp->scp.iscp = WSWAPiscp(virt_to_bus((void *)&lp->iscp));
681 lp->iscp.scb = WSWAPscb(virt_to_bus((void *)&lp->scb));
682 lp->iscp.stat = ISCP_BUSY;
685 lp->cmd_head = lp->scb.cmd = I596_NULL;
687 #ifdef ENABLE_BVME6000_NET
688 if (MACH_IS_BVME6000) {
689 lp->scb.t_on = 7 * 25;
690 lp->scb.t_off = 1 * 25;
694 DEB(DEB_INIT,printk(KERN_DEBUG "%s: starting i82596.\n", dev->name));
696 #if defined(ENABLE_APRICOT)
697 (void) inb(ioaddr + 0x10);
698 outb(4, ioaddr + 0xf);
702 if (wait_istat(dev,lp,1000,"initialization timed out"))
704 DEB(DEB_INIT,printk(KERN_DEBUG "%s: i82596 initialization successful\n", dev->name));
706 /* Ensure rx frame/buffer descriptors are tidy */
707 rebuild_rx_bufs(dev);
710 #ifdef ENABLE_MVME16x_NET
711 if (MACH_IS_MVME16x) {
712 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
714 /* Enable ints, etc. now */
715 pcc2[0x2a] = 0x55; /* Edge sensitive */
719 #ifdef ENABLE_BVME6000_NET
720 if (MACH_IS_BVME6000) {
721 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
728 DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdConfigure\n", dev->name));
729 memcpy(lp->cf_cmd.i596_config, init_setup, 14);
730 lp->cf_cmd.cmd.command = CmdConfigure;
731 i596_add_cmd(dev, &lp->cf_cmd.cmd);
733 DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdSASetup\n", dev->name));
734 memcpy(lp->sa_cmd.eth_addr, dev->dev_addr, 6);
735 lp->sa_cmd.cmd.command = CmdSASetup;
736 i596_add_cmd(dev, &lp->sa_cmd.cmd);
738 DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdTDR\n", dev->name));
739 lp->tdr_cmd.cmd.command = CmdTDR;
740 i596_add_cmd(dev, &lp->tdr_cmd.cmd);
742 spin_lock_irqsave (&lp->lock, flags);
744 if (wait_cmd(dev,lp,1000,"timed out waiting to issue RX_START")) {
745 spin_unlock_irqrestore (&lp->lock, flags);
748 DEB(DEB_INIT,printk(KERN_DEBUG "%s: Issuing RX_START\n", dev->name));
749 lp->scb.command = RX_START;
752 spin_unlock_irqrestore (&lp->lock, flags);
754 if (wait_cmd(dev,lp,1000,"RX_START not processed"))
756 DEB(DEB_INIT,printk(KERN_DEBUG "%s: Receive unit started OK\n", dev->name));
760 printk(KERN_CRIT "%s: Failed to initialise 82596\n", dev->name);
761 MPU_PORT(dev, PORT_RESET, NULL);
765 static inline int i596_rx(struct net_device *dev)
767 struct i596_private *lp = dev->priv;
768 struct i596_rfd *rfd;
769 struct i596_rbd *rbd;
772 DEB(DEB_RXFRAME,printk(KERN_DEBUG "i596_rx(), rfd_head %p, rbd_head %p\n",
773 lp->rfd_head, lp->rbd_head));
775 rfd = lp->rfd_head; /* Ref next frame to check */
777 while ((rfd->stat) & STAT_C) { /* Loop while complete frames */
778 if (rfd->rbd == I596_NULL)
780 else if (rfd->rbd == lp->rbd_head->b_addr)
783 printk(KERN_CRIT "%s: rbd chain broken!\n", dev->name);
787 DEB(DEB_RXFRAME, printk(KERN_DEBUG " rfd %p, rfd.rbd %p, rfd.stat %04x\n",
788 rfd, rfd->rbd, rfd->stat));
790 if (rbd != I596_NULL && ((rfd->stat) & STAT_OK)) {
792 int pkt_len = rbd->count & 0x3fff;
793 struct sk_buff *skb = rbd->skb;
796 DEB(DEB_RXADDR,print_eth(rbd->v_data, "received"));
799 /* Check if the packet is long enough to just accept
800 * without copying to a properly sized skbuff.
803 if (pkt_len > rx_copybreak) {
804 struct sk_buff *newskb;
806 /* Get fresh skbuff to replace filled one. */
807 newskb = dev_alloc_skb(PKT_BUF_SZ);
808 if (newskb == NULL) {
809 skb = NULL; /* drop pkt */
812 /* Pass up the skb already on the Rx ring. */
813 skb_put(skb, pkt_len);
817 rbd->v_data = newskb->data;
818 rbd->b_data = WSWAPchar(virt_to_bus(newskb->data));
820 cache_clear(virt_to_phys(newskb->data), PKT_BUF_SZ);
824 skb = dev_alloc_skb(pkt_len + 2);
827 /* XXX tulip.c can defer packets here!! */
828 printk(KERN_WARNING "%s: i596_rx Memory squeeze, dropping packet.\n", dev->name);
829 dev->stats.rx_dropped++;
833 /* 16 byte align the data fields */
835 memcpy(skb_put(skb,pkt_len), rbd->v_data, pkt_len);
837 skb->protocol=eth_type_trans(skb,dev);
840 cache_clear(virt_to_phys(rbd->skb->data),
844 dev->last_rx = jiffies;
845 dev->stats.rx_packets++;
846 dev->stats.rx_bytes+=pkt_len;
850 DEB(DEB_ERRORS, printk(KERN_DEBUG "%s: Error, rfd.stat = 0x%04x\n",
851 dev->name, rfd->stat));
852 dev->stats.rx_errors++;
853 if ((rfd->stat) & 0x0001)
854 dev->stats.collisions++;
855 if ((rfd->stat) & 0x0080)
856 dev->stats.rx_length_errors++;
857 if ((rfd->stat) & 0x0100)
858 dev->stats.rx_over_errors++;
859 if ((rfd->stat) & 0x0200)
860 dev->stats.rx_fifo_errors++;
861 if ((rfd->stat) & 0x0400)
862 dev->stats.rx_frame_errors++;
863 if ((rfd->stat) & 0x0800)
864 dev->stats.rx_crc_errors++;
865 if ((rfd->stat) & 0x1000)
866 dev->stats.rx_length_errors++;
869 /* Clear the buffer descriptor count and EOF + F flags */
871 if (rbd != I596_NULL && (rbd->count & 0x4000)) {
873 lp->rbd_head = rbd->v_next;
876 /* Tidy the frame descriptor, marking it as end of list */
878 rfd->rbd = I596_NULL;
880 rfd->cmd = CMD_EOL|CMD_FLEX;
883 /* Remove end-of-list from old end descriptor */
885 rfd->v_prev->cmd = CMD_FLEX;
887 /* Update record of next frame descriptor to process */
889 lp->scb.rfd = rfd->b_next;
890 lp->rfd_head = rfd->v_next;
894 DEB(DEB_RXFRAME,printk(KERN_DEBUG "frames %d\n", frames));
900 static void i596_cleanup_cmd(struct net_device *dev, struct i596_private *lp)
902 struct i596_cmd *ptr;
904 while (lp->cmd_head != I596_NULL) {
906 lp->cmd_head = ptr->v_next;
909 switch ((ptr->command) & 0x7) {
912 struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
913 struct sk_buff *skb = tx_cmd->skb;
917 dev->stats.tx_errors++;
918 dev->stats.tx_aborted_errors++;
920 ptr->v_next = ptr->b_next = I596_NULL;
921 tx_cmd->cmd.command = 0; /* Mark as free */
925 ptr->v_next = ptr->b_next = I596_NULL;
929 wait_cmd(dev,lp,100,"i596_cleanup_cmd timed out");
930 lp->scb.cmd = I596_NULL;
933 static void i596_reset(struct net_device *dev, struct i596_private *lp,
938 DEB(DEB_RESET,printk(KERN_DEBUG "i596_reset\n"));
940 spin_lock_irqsave (&lp->lock, flags);
942 wait_cmd(dev,lp,100,"i596_reset timed out");
944 netif_stop_queue(dev);
946 lp->scb.command = CUC_ABORT | RX_ABORT;
949 /* wait for shutdown */
950 wait_cmd(dev,lp,1000,"i596_reset 2 timed out");
951 spin_unlock_irqrestore (&lp->lock, flags);
953 i596_cleanup_cmd(dev,lp);
956 netif_start_queue(dev);
960 static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd)
962 struct i596_private *lp = dev->priv;
963 int ioaddr = dev->base_addr;
966 DEB(DEB_ADDCMD,printk(KERN_DEBUG "i596_add_cmd\n"));
969 cmd->command |= (CMD_EOL | CMD_INTR);
970 cmd->v_next = cmd->b_next = I596_NULL;
972 spin_lock_irqsave (&lp->lock, flags);
974 if (lp->cmd_head != I596_NULL) {
975 lp->cmd_tail->v_next = cmd;
976 lp->cmd_tail->b_next = WSWAPcmd(virt_to_bus(&cmd->status));
979 wait_cmd(dev,lp,100,"i596_add_cmd timed out");
980 lp->scb.cmd = WSWAPcmd(virt_to_bus(&cmd->status));
981 lp->scb.command = CUC_START;
987 spin_unlock_irqrestore (&lp->lock, flags);
989 if (lp->cmd_backlog > max_cmd_backlog) {
990 unsigned long tickssofar = jiffies - lp->last_cmd;
992 if (tickssofar < ticks_limit)
995 printk(KERN_NOTICE "%s: command unit timed out, status resetting.\n", dev->name);
997 i596_reset(dev, lp, ioaddr);
1001 static int i596_open(struct net_device *dev)
1005 DEB(DEB_OPEN,printk(KERN_DEBUG "%s: i596_open() irq %d.\n", dev->name, dev->irq));
1007 if (request_irq(dev->irq, i596_interrupt, 0, "i82596", dev)) {
1008 printk(KERN_ERR "%s: IRQ %d not free\n", dev->name, dev->irq);
1011 #ifdef ENABLE_MVME16x_NET
1012 if (MACH_IS_MVME16x) {
1013 if (request_irq(0x56, i596_error, 0, "i82596_error", dev))
1019 netif_start_queue(dev);
1021 /* Initialize the 82596 memory */
1022 if (init_i596_mem(dev)) {
1024 free_irq(dev->irq, dev);
1030 static void i596_tx_timeout (struct net_device *dev)
1032 struct i596_private *lp = dev->priv;
1033 int ioaddr = dev->base_addr;
1035 /* Transmitter timeout, serious problems. */
1036 DEB(DEB_ERRORS,printk(KERN_ERR "%s: transmit timed out, status resetting.\n",
1039 dev->stats.tx_errors++;
1041 /* Try to restart the adaptor */
1042 if (lp->last_restart == dev->stats.tx_packets) {
1043 DEB(DEB_ERRORS,printk(KERN_ERR "Resetting board.\n"));
1044 /* Shutdown and restart */
1045 i596_reset (dev, lp, ioaddr);
1047 /* Issue a channel attention signal */
1048 DEB(DEB_ERRORS,printk(KERN_ERR "Kicking board.\n"));
1049 lp->scb.command = CUC_START | RX_START;
1051 lp->last_restart = dev->stats.tx_packets;
1054 dev->trans_start = jiffies;
1055 netif_wake_queue (dev);
1059 static int i596_start_xmit(struct sk_buff *skb, struct net_device *dev)
1061 struct i596_private *lp = dev->priv;
1062 struct tx_cmd *tx_cmd;
1063 struct i596_tbd *tbd;
1064 short length = skb->len;
1065 dev->trans_start = jiffies;
1067 DEB(DEB_STARTTX,printk(KERN_DEBUG "%s: i596_start_xmit(%x,%p) called\n",
1068 dev->name, skb->len, skb->data));
1070 if (skb->len < ETH_ZLEN) {
1071 if (skb_padto(skb, ETH_ZLEN))
1075 netif_stop_queue(dev);
1077 tx_cmd = lp->tx_cmds + lp->next_tx_cmd;
1078 tbd = lp->tbds + lp->next_tx_cmd;
1080 if (tx_cmd->cmd.command) {
1081 printk(KERN_NOTICE "%s: xmit ring full, dropping packet.\n",
1083 dev->stats.tx_dropped++;
1087 if (++lp->next_tx_cmd == TX_RING_SIZE)
1088 lp->next_tx_cmd = 0;
1089 tx_cmd->tbd = WSWAPtbd(virt_to_bus(tbd));
1090 tbd->next = I596_NULL;
1092 tx_cmd->cmd.command = CMD_FLEX | CmdTx;
1098 tbd->size = EOF | length;
1100 tbd->data = WSWAPchar(virt_to_bus(skb->data));
1103 cache_push(virt_to_phys(skb->data), length);
1105 DEB(DEB_TXADDR,print_eth(skb->data, "tx-queued"));
1106 i596_add_cmd(dev, &tx_cmd->cmd);
1108 dev->stats.tx_packets++;
1109 dev->stats.tx_bytes += length;
1112 netif_start_queue(dev);
1117 static void print_eth(unsigned char *add, char *str)
1119 DECLARE_MAC_BUF(mac);
1120 DECLARE_MAC_BUF(mac2);
1122 printk(KERN_DEBUG "i596 0x%p, %s --> %s %02X%02X, %s\n",
1123 add, print_mac(mac, add + 6), print_mac(mac2, add),
1124 add[12], add[13], str);
1127 static int io = 0x300;
1128 static int irq = 10;
1130 struct net_device * __init i82596_probe(int unit)
1132 struct net_device *dev;
1134 struct i596_private *lp;
1140 return ERR_PTR(-ENODEV);
1143 dev = alloc_etherdev(0);
1145 return ERR_PTR(-ENOMEM);
1148 sprintf(dev->name, "eth%d", unit);
1149 netdev_boot_setup_check(dev);
1151 dev->base_addr = io;
1155 #ifdef ENABLE_MVME16x_NET
1156 if (MACH_IS_MVME16x) {
1157 if (mvme16x_config & MVME16x_CONFIG_NO_ETHERNET) {
1158 printk(KERN_NOTICE "Ethernet probe disabled - chip not present\n");
1162 memcpy(eth_addr, (void *) 0xfffc1f2c, 6); /* YUCK! Get addr from NOVRAM */
1163 dev->base_addr = MVME_I596_BASE;
1164 dev->irq = (unsigned) MVME16x_IRQ_I596;
1168 #ifdef ENABLE_BVME6000_NET
1169 if (MACH_IS_BVME6000) {
1170 volatile unsigned char *rtc = (unsigned char *) BVME_RTC_BASE;
1171 unsigned char msr = rtc[3];
1175 for (i = 0; i < 6; i++)
1176 eth_addr[i] = rtc[i * 4 + 7]; /* Stored in RTC RAM at offset 1 */
1178 dev->base_addr = BVME_I596_BASE;
1179 dev->irq = (unsigned) BVME_IRQ_I596;
1183 #ifdef ENABLE_APRICOT
1188 /* this is easy the ethernet interface can only be at 0x300 */
1189 /* first check nothing is already registered here */
1191 if (!request_region(ioaddr, I596_TOTAL_SIZE, DRV_NAME)) {
1192 printk(KERN_ERR "82596: IO address 0x%04x in use\n", ioaddr);
1197 dev->base_addr = ioaddr;
1199 for (i = 0; i < 8; i++) {
1200 eth_addr[i] = inb(ioaddr + 8 + i);
1201 checksum += eth_addr[i];
1204 /* checksum is a multiple of 0x100, got this wrong first time
1205 some machines have 0x100, some 0x200. The DOS driver doesn't
1206 even bother with the checksum.
1207 Some other boards trip the checksum.. but then appear as
1208 ether address 0. Trap these - AC */
1210 if ((checksum % 0x100) ||
1211 (memcmp(eth_addr, "\x00\x00\x49", 3) != 0)) {
1224 dev->mem_start = (int)__get_free_pages(GFP_ATOMIC, 0);
1225 if (!dev->mem_start) {
1230 DEB(DEB_PROBE,printk(KERN_INFO "%s: 82596 at %#3lx,", dev->name, dev->base_addr));
1232 for (i = 0; i < 6; i++)
1233 DEB(DEB_PROBE,printk(" %2.2X", dev->dev_addr[i] = eth_addr[i]));
1235 DEB(DEB_PROBE,printk(" IRQ %d.\n", dev->irq));
1237 DEB(DEB_PROBE,printk(KERN_INFO "%s", version));
1239 /* The 82596-specific entries in the device structure. */
1240 dev->open = i596_open;
1241 dev->stop = i596_close;
1242 dev->hard_start_xmit = i596_start_xmit;
1243 dev->set_multicast_list = set_multicast_list;
1244 dev->tx_timeout = i596_tx_timeout;
1245 dev->watchdog_timeo = TX_TIMEOUT;
1247 dev->priv = (void *)(dev->mem_start);
1250 DEB(DEB_INIT,printk(KERN_DEBUG "%s: lp at 0x%08lx (%zd bytes), "
1251 "lp->scb at 0x%08lx\n",
1252 dev->name, (unsigned long)lp,
1253 sizeof(struct i596_private), (unsigned long)&lp->scb));
1254 memset((void *) lp, 0, sizeof(struct i596_private));
1257 cache_push(virt_to_phys((void *)(dev->mem_start)), 4096);
1258 cache_clear(virt_to_phys((void *)(dev->mem_start)), 4096);
1259 kernel_set_cachemode((void *)(dev->mem_start), 4096, IOMAP_NOCACHE_SER);
1261 lp->scb.command = 0;
1262 lp->scb.cmd = I596_NULL;
1263 lp->scb.rfd = I596_NULL;
1264 spin_lock_init(&lp->lock);
1266 err = register_netdev(dev);
1272 /* XXX This assumes default cache mode to be IOMAP_FULL_CACHING,
1273 * XXX which may be invalid (CONFIG_060_WRITETHROUGH)
1275 kernel_set_cachemode((void *)(dev->mem_start), 4096,
1276 IOMAP_FULL_CACHING);
1278 free_page ((u32)(dev->mem_start));
1280 #ifdef ENABLE_APRICOT
1281 release_region(dev->base_addr, I596_TOTAL_SIZE);
1285 return ERR_PTR(err);
1288 static irqreturn_t i596_interrupt(int irq, void *dev_id)
1290 struct net_device *dev = dev_id;
1291 struct i596_private *lp;
1293 unsigned short status, ack_cmd = 0;
1296 #ifdef ENABLE_BVME6000_NET
1297 if (MACH_IS_BVME6000) {
1298 if (*(char *) BVME_LOCAL_IRQ_STAT & BVME_ETHERR) {
1299 i596_error(irq, dev_id);
1305 printk(KERN_ERR "i596_interrupt(): irq %d for unknown device.\n", irq);
1309 ioaddr = dev->base_addr;
1312 spin_lock (&lp->lock);
1314 wait_cmd(dev,lp,100,"i596 interrupt, timeout");
1315 status = lp->scb.status;
1317 DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt, IRQ %d, status %4.4x.\n",
1318 dev->name, irq, status));
1320 ack_cmd = status & 0xf000;
1322 if ((status & 0x8000) || (status & 0x2000)) {
1323 struct i596_cmd *ptr;
1326 if ((status & 0x8000))
1327 DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt completed command.\n", dev->name));
1328 if ((status & 0x2000))
1329 DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt command unit inactive %x.\n", dev->name, status & 0x0700));
1331 while ((lp->cmd_head != I596_NULL) && (lp->cmd_head->status & STAT_C)) {
1334 DEB(DEB_STATUS,printk(KERN_DEBUG "cmd_head->status = %04x, ->command = %04x\n",
1335 lp->cmd_head->status, lp->cmd_head->command));
1336 lp->cmd_head = ptr->v_next;
1339 switch ((ptr->command) & 0x7) {
1342 struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
1343 struct sk_buff *skb = tx_cmd->skb;
1345 if ((ptr->status) & STAT_OK) {
1346 DEB(DEB_TXADDR,print_eth(skb->data, "tx-done"));
1348 dev->stats.tx_errors++;
1349 if ((ptr->status) & 0x0020)
1350 dev->stats.collisions++;
1351 if (!((ptr->status) & 0x0040))
1352 dev->stats.tx_heartbeat_errors++;
1353 if ((ptr->status) & 0x0400)
1354 dev->stats.tx_carrier_errors++;
1355 if ((ptr->status) & 0x0800)
1356 dev->stats.collisions++;
1357 if ((ptr->status) & 0x1000)
1358 dev->stats.tx_aborted_errors++;
1361 dev_kfree_skb_irq(skb);
1363 tx_cmd->cmd.command = 0; /* Mark free */
1368 unsigned short status = ((struct tdr_cmd *)ptr)->status;
1370 if (status & 0x8000) {
1371 DEB(DEB_TDR,printk(KERN_INFO "%s: link ok.\n", dev->name));
1373 if (status & 0x4000)
1374 printk(KERN_ERR "%s: Transceiver problem.\n", dev->name);
1375 if (status & 0x2000)
1376 printk(KERN_ERR "%s: Termination problem.\n", dev->name);
1377 if (status & 0x1000)
1378 printk(KERN_ERR "%s: Short circuit.\n", dev->name);
1380 DEB(DEB_TDR,printk(KERN_INFO "%s: Time %d.\n", dev->name, status & 0x07ff));
1385 case CmdMulticastList:
1386 /* Zap command so set_multicast_list() knows it is free */
1390 ptr->v_next = ptr->b_next = I596_NULL;
1391 lp->last_cmd = jiffies;
1395 while ((ptr != I596_NULL) && (ptr != lp->cmd_tail)) {
1396 ptr->command &= 0x1fff;
1400 if ((lp->cmd_head != I596_NULL))
1401 ack_cmd |= CUC_START;
1402 lp->scb.cmd = WSWAPcmd(virt_to_bus(&lp->cmd_head->status));
1404 if ((status & 0x1000) || (status & 0x4000)) {
1405 if ((status & 0x4000))
1406 DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt received a frame.\n", dev->name));
1408 /* Only RX_START if stopped - RGH 07-07-96 */
1409 if (status & 0x1000) {
1410 if (netif_running(dev)) {
1411 DEB(DEB_ERRORS,printk(KERN_ERR "%s: i596 interrupt receive unit inactive, status 0x%x\n", dev->name, status));
1412 ack_cmd |= RX_START;
1413 dev->stats.rx_errors++;
1414 dev->stats.rx_fifo_errors++;
1415 rebuild_rx_bufs(dev);
1419 wait_cmd(dev,lp,100,"i596 interrupt, timeout");
1420 lp->scb.command = ack_cmd;
1422 #ifdef ENABLE_MVME16x_NET
1423 if (MACH_IS_MVME16x) {
1424 /* Ack the interrupt */
1426 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
1431 #ifdef ENABLE_BVME6000_NET
1432 if (MACH_IS_BVME6000) {
1433 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
1439 #ifdef ENABLE_APRICOT
1440 (void) inb(ioaddr + 0x10);
1441 outb(4, ioaddr + 0xf);
1445 DEB(DEB_INTS,printk(KERN_DEBUG "%s: exiting interrupt.\n", dev->name));
1447 spin_unlock (&lp->lock);
1448 return IRQ_RETVAL(handled);
1451 static int i596_close(struct net_device *dev)
1453 struct i596_private *lp = dev->priv;
1454 unsigned long flags;
1456 netif_stop_queue(dev);
1458 DEB(DEB_INIT,printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x.\n",
1459 dev->name, lp->scb.status));
1461 spin_lock_irqsave(&lp->lock, flags);
1463 wait_cmd(dev,lp,100,"close1 timed out");
1464 lp->scb.command = CUC_ABORT | RX_ABORT;
1467 wait_cmd(dev,lp,100,"close2 timed out");
1469 spin_unlock_irqrestore(&lp->lock, flags);
1470 DEB(DEB_STRUCT,i596_display_data(dev));
1471 i596_cleanup_cmd(dev,lp);
1473 #ifdef ENABLE_MVME16x_NET
1474 if (MACH_IS_MVME16x) {
1475 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
1477 /* Disable all ints */
1480 pcc2[0x2b] = 0x40; /* Set snooping bits now! */
1483 #ifdef ENABLE_BVME6000_NET
1484 if (MACH_IS_BVME6000) {
1485 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
1491 free_irq(dev->irq, dev);
1492 remove_rx_bufs(dev);
1498 * Set or clear the multicast filter for this adaptor.
1501 static void set_multicast_list(struct net_device *dev)
1503 struct i596_private *lp = dev->priv;
1504 int config = 0, cnt;
1506 DEB(DEB_MULTI,printk(KERN_DEBUG "%s: set multicast list, %d entries, promisc %s, allmulti %s\n",
1507 dev->name, dev->mc_count,
1508 dev->flags & IFF_PROMISC ? "ON" : "OFF",
1509 dev->flags & IFF_ALLMULTI ? "ON" : "OFF"));
1511 if (wait_cfg(dev, &lp->cf_cmd.cmd, 1000, "config change request timed out"))
1514 if ((dev->flags & IFF_PROMISC) && !(lp->cf_cmd.i596_config[8] & 0x01)) {
1515 lp->cf_cmd.i596_config[8] |= 0x01;
1518 if (!(dev->flags & IFF_PROMISC) && (lp->cf_cmd.i596_config[8] & 0x01)) {
1519 lp->cf_cmd.i596_config[8] &= ~0x01;
1522 if ((dev->flags & IFF_ALLMULTI) && (lp->cf_cmd.i596_config[11] & 0x20)) {
1523 lp->cf_cmd.i596_config[11] &= ~0x20;
1526 if (!(dev->flags & IFF_ALLMULTI) && !(lp->cf_cmd.i596_config[11] & 0x20)) {
1527 lp->cf_cmd.i596_config[11] |= 0x20;
1531 lp->cf_cmd.cmd.command = CmdConfigure;
1532 i596_add_cmd(dev, &lp->cf_cmd.cmd);
1535 cnt = dev->mc_count;
1536 if (cnt > MAX_MC_CNT)
1539 printk(KERN_ERR "%s: Only %d multicast addresses supported",
1543 if (dev->mc_count > 0) {
1544 struct dev_mc_list *dmi;
1547 DECLARE_MAC_BUF(mac);
1549 if (wait_cfg(dev, &lp->mc_cmd.cmd, 1000, "multicast list change request timed out"))
1552 cmd->cmd.command = CmdMulticastList;
1553 cmd->mc_cnt = dev->mc_count * 6;
1555 for (dmi = dev->mc_list; cnt && dmi != NULL; dmi = dmi->next, cnt--, cp += 6) {
1556 memcpy(cp, dmi->dmi_addr, 6);
1558 DEB(DEB_MULTI,printk(KERN_INFO "%s: Adding address %s\n",
1559 dev->name, print_mac(mac, cp)));
1561 i596_add_cmd(dev, &cmd->cmd);
1566 static struct net_device *dev_82596;
1568 #ifdef ENABLE_APRICOT
1569 module_param(irq, int, 0);
1570 MODULE_PARM_DESC(irq, "Apricot IRQ number");
1573 static int debug = -1;
1574 module_param(debug, int, 0);
1575 MODULE_PARM_DESC(debug, "i82596 debug mask");
1577 int __init init_module(void)
1581 dev_82596 = i82596_probe(-1);
1582 if (IS_ERR(dev_82596))
1583 return PTR_ERR(dev_82596);
1587 void __exit cleanup_module(void)
1589 unregister_netdev(dev_82596);
1591 /* XXX This assumes default cache mode to be IOMAP_FULL_CACHING,
1592 * XXX which may be invalid (CONFIG_060_WRITETHROUGH)
1595 kernel_set_cachemode((void *)(dev_82596->mem_start), 4096,
1596 IOMAP_FULL_CACHING);
1598 free_page ((u32)(dev_82596->mem_start));
1599 #ifdef ENABLE_APRICOT
1600 /* If we don't do this, we can't re-insmod it later. */
1601 release_region(dev_82596->base_addr, I596_TOTAL_SIZE);
1603 free_netdev(dev_82596);
1610 * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c 82596.c"