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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/interrupt.h>
49#include <linux/delay.h>
50#include <linux/netdevice.h>
51#include <linux/etherdevice.h>
52#include <linux/skbuff.h>
53#include <linux/init.h>
54#include <linux/bitops.h>
55#include <linux/gfp.h>
56
57#include <asm/io.h>
58#include <asm/dma.h>
59#include <asm/pgtable.h>
60#include <asm/cacheflush.h>
61
62static char version[] __initdata =
63 "82596.c $Revision: 1.5 $\n";
64
65#define DRV_NAME "82596"
66
67
68
69
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
87
88
89#define DEB(x,y) if (i596_debug & (x)) y
90
91
92#if defined(CONFIG_MVME16x_NET) || defined(CONFIG_MVME16x_NET_MODULE)
93#define ENABLE_MVME16x_NET
94#endif
95#if defined(CONFIG_BVME6000_NET) || defined(CONFIG_BVME6000_NET_MODULE)
96#define ENABLE_BVME6000_NET
97#endif
98#if defined(CONFIG_APRICOT) || defined(CONFIG_APRICOT_MODULE)
99#define ENABLE_APRICOT
100#endif
101
102#ifdef ENABLE_MVME16x_NET
103#include <asm/mvme16xhw.h>
104#endif
105#ifdef ENABLE_BVME6000_NET
106#include <asm/bvme6000hw.h>
107#endif
108
109
110
111
112
113
114#ifdef __mc68000__
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
124#else
125#define WSWAPrfd(x) ((struct i596_rfd *)((long)x))
126#define WSWAPrbd(x) ((struct i596_rbd *)((long)x))
127#define WSWAPiscp(x) ((struct i596_iscp *)((long)x))
128#define WSWAPscb(x) ((struct i596_scb *)((long)x))
129#define WSWAPcmd(x) ((struct i596_cmd *)((long)x))
130#define WSWAPtbd(x) ((struct i596_tbd *)((long)x))
131#define WSWAPchar(x) ((char *)((long)x))
132#define ISCP_BUSY 0x0001
133#define MACH_IS_APRICOT 1
134#endif
135
136
137
138
139
140
141
142#define PORT_RESET 0x00
143#define PORT_SELFTEST 0x01
144#define PORT_ALTSCP 0x02
145#define PORT_ALTDUMP 0x03
146
147static int i596_debug = (DEB_SERIOUS|DEB_PROBE);
148
149MODULE_AUTHOR("Richard Hirst");
150MODULE_DESCRIPTION("i82596 driver");
151MODULE_LICENSE("GPL");
152
153module_param(i596_debug, int, 0);
154MODULE_PARM_DESC(i596_debug, "i82596 debug mask");
155
156
157
158
159
160static int rx_copybreak = 100;
161
162#define PKT_BUF_SZ 1536
163#define MAX_MC_CNT 64
164
165#define I596_TOTAL_SIZE 17
166
167#define I596_NULL ((void *)0xffffffff)
168
169#define CMD_EOL 0x8000
170#define CMD_SUSP 0x4000
171#define CMD_INTR 0x2000
172
173#define CMD_FLEX 0x0008
174
175enum commands {
176 CmdNOp = 0, CmdSASetup = 1, CmdConfigure = 2, CmdMulticastList = 3,
177 CmdTx = 4, CmdTDR = 5, CmdDump = 6, CmdDiagnose = 7
178};
179
180#define STAT_C 0x8000
181#define STAT_B 0x4000
182#define STAT_OK 0x2000
183#define STAT_A 0x1000
184
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
193
194#define TX_TIMEOUT (HZ/20)
195
196
197struct i596_reg {
198 unsigned short porthi;
199 unsigned short portlo;
200 unsigned long ca;
201};
202
203#define EOF 0x8000
204#define SIZE_MASK 0x3fff
205
206struct i596_tbd {
207 unsigned short size;
208 unsigned short pad;
209 struct i596_tbd *next;
210 char *data;
211};
212
213
214
215
216
217
218
219
220
221
222
223struct i596_cmd {
224 struct i596_cmd *v_next;
225 unsigned short status;
226 unsigned short command;
227 struct i596_cmd *b_next;
228};
229
230struct tx_cmd {
231 struct i596_cmd cmd;
232 struct i596_tbd *tbd;
233 unsigned short size;
234 unsigned short pad;
235 struct sk_buff *skb;
236};
237
238struct tdr_cmd {
239 struct i596_cmd cmd;
240 unsigned short status;
241 unsigned short pad;
242};
243
244struct mc_cmd {
245 struct i596_cmd cmd;
246 short mc_cnt;
247 char mc_addrs[MAX_MC_CNT*6];
248};
249
250struct sa_cmd {
251 struct i596_cmd cmd;
252 char eth_addr[8];
253};
254
255struct cf_cmd {
256 struct i596_cmd cmd;
257 char i596_config[16];
258};
259
260struct i596_rfd {
261 unsigned short stat;
262 unsigned short cmd;
263 struct i596_rfd *b_next;
264 struct i596_rbd *rbd;
265 unsigned short count;
266 unsigned short size;
267 struct i596_rfd *v_next;
268 struct i596_rfd *v_prev;
269};
270
271struct i596_rbd {
272 unsigned short count;
273 unsigned short zero1;
274 struct i596_rbd *b_next;
275 unsigned char *b_data;
276 unsigned short size;
277 unsigned short zero2;
278 struct sk_buff *skb;
279 struct i596_rbd *v_next;
280 struct i596_rbd *b_addr;
281 unsigned char *v_data;
282};
283
284#define TX_RING_SIZE 64
285#define RX_RING_SIZE 16
286
287struct i596_scb {
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;
298 unsigned short t_on;
299 unsigned short t_off;
300};
301
302struct i596_iscp {
303 unsigned long stat;
304 struct i596_scb *scb;
305};
306
307struct i596_scp {
308 unsigned long sysbus;
309 unsigned long pad;
310 struct i596_iscp *iscp;
311};
312
313struct 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;
321 unsigned long stat;
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;
327 int cmd_backlog;
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];
333 int next_tx_cmd;
334 spinlock_t lock;
335};
336
337static char init_setup[] =
338{
339 0x8E,
340 0xC8,
341#ifdef CONFIG_VME
342 0xc0,
343#else
344 0x80,
345#endif
346 0x2E,
347 0x00,
348 0x60,
349 0x00,
350 0xf2,
351 0x00,
352 0x00,
353 0x40,
354 0xff,
355 0x00,
356 0x7f };
357
358static int i596_open(struct net_device *dev);
359static netdev_tx_t i596_start_xmit(struct sk_buff *skb, struct net_device *dev);
360static irqreturn_t i596_interrupt(int irq, void *dev_id);
361static int i596_close(struct net_device *dev);
362static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd);
363static void i596_tx_timeout (struct net_device *dev);
364static void print_eth(unsigned char *buf, char *str);
365static void set_multicast_list(struct net_device *dev);
366
367static int rx_ring_size = RX_RING_SIZE;
368static int ticks_limit = 25;
369static int max_cmd_backlog = TX_RING_SIZE-1;
370
371
372static inline void CA(struct net_device *dev)
373{
374#ifdef ENABLE_MVME16x_NET
375 if (MACH_IS_MVME16x) {
376 ((struct i596_reg *) dev->base_addr)->ca = 1;
377 }
378#endif
379#ifdef ENABLE_BVME6000_NET
380 if (MACH_IS_BVME6000) {
381 volatile u32 i;
382
383 i = *(volatile u32 *) (dev->base_addr);
384 }
385#endif
386#ifdef ENABLE_APRICOT
387 if (MACH_IS_APRICOT) {
388 outw(0, (short) (dev->base_addr) + 4);
389 }
390#endif
391}
392
393
394static inline void MPU_PORT(struct net_device *dev, int c, volatile void *x)
395{
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;
401 }
402#endif
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;
408 udelay(1);
409 *(volatile u32 *) dev->base_addr = v;
410 }
411#endif
412}
413
414
415static inline int wait_istat(struct net_device *dev, struct i596_private *lp, int delcnt, char *str)
416{
417 while (--delcnt && lp->iscp.stat)
418 udelay(10);
419 if (!delcnt) {
420 printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n",
421 dev->name, str, lp->scb.status, lp->scb.command);
422 return -1;
423 }
424 else
425 return 0;
426}
427
428
429static inline int wait_cmd(struct net_device *dev, struct i596_private *lp, int delcnt, char *str)
430{
431 while (--delcnt && lp->scb.command)
432 udelay(10);
433 if (!delcnt) {
434 printk(KERN_ERR "%s: %s, status %4.4x, cmd %4.4x.\n",
435 dev->name, str, lp->scb.status, lp->scb.command);
436 return -1;
437 }
438 else
439 return 0;
440}
441
442
443static inline int wait_cfg(struct net_device *dev, struct i596_cmd *cmd, int delcnt, char *str)
444{
445 volatile struct i596_cmd *c = cmd;
446
447 while (--delcnt && c->command)
448 udelay(10);
449 if (!delcnt) {
450 printk(KERN_ERR "%s: %s.\n", dev->name, str);
451 return -1;
452 }
453 else
454 return 0;
455}
456
457
458static void i596_display_data(struct net_device *dev)
459{
460 struct i596_private *lp = dev->ml_priv;
461 struct i596_cmd *cmd;
462 struct i596_rfd *rfd;
463 struct i596_rbd *rbd;
464
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);
477 cmd = lp->cmd_head;
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);
481 cmd = cmd->v_next;
482 }
483 rfd = lp->rfd_head;
484 printk(KERN_ERR "rfd_head = %p\n", rfd);
485 do {
486 printk(KERN_ERR " %p .stat %04x, .cmd %04x, b_next %p, rbd %p,"
487 " count %04x\n",
488 rfd, rfd->stat, rfd->cmd, rfd->b_next, rfd->rbd,
489 rfd->count);
490 rfd = rfd->v_next;
491 } while (rfd != lp->rfd_head);
492 rbd = lp->rbd_head;
493 printk(KERN_ERR "rbd_head = %p\n", rbd);
494 do {
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);
497 rbd = rbd->v_next;
498 } while (rbd != lp->rbd_head);
499}
500
501
502#if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
503static irqreturn_t i596_error(int irq, void *dev_id)
504{
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;
509
510 pcc2[0x28] = 1;
511 pcc2[0x2b] = 0x1d;
512 }
513#endif
514#ifdef ENABLE_BVME6000_NET
515 if (MACH_IS_BVME6000) {
516 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
517
518 *ethirq = 1;
519 *ethirq = 3;
520 }
521#endif
522 printk(KERN_ERR "%s: Error interrupt\n", dev->name);
523 i596_display_data(dev);
524 return IRQ_HANDLED;
525}
526#endif
527
528static inline void remove_rx_bufs(struct net_device *dev)
529{
530 struct i596_private *lp = dev->ml_priv;
531 struct i596_rbd *rbd;
532 int i;
533
534 for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
535 if (rbd->skb == NULL)
536 break;
537 dev_kfree_skb(rbd->skb);
538 rbd->skb = NULL;
539 }
540}
541
542static inline int init_rx_bufs(struct net_device *dev)
543{
544 struct i596_private *lp = dev->ml_priv;
545 int i;
546 struct i596_rfd *rfd;
547 struct i596_rbd *rbd;
548
549
550
551 for (i = 0, rbd = lp->rbds; i < rx_ring_size; i++, rbd++) {
552 struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ);
553
554 if (skb == NULL) {
555 remove_rx_bufs(dev);
556 return -ENOMEM;
557 }
558
559 skb->dev = dev;
560 rbd->v_next = rbd+1;
561 rbd->b_next = WSWAPrbd(virt_to_bus(rbd+1));
562 rbd->b_addr = WSWAPrbd(virt_to_bus(rbd));
563 rbd->skb = skb;
564 rbd->v_data = skb->data;
565 rbd->b_data = WSWAPchar(virt_to_bus(skb->data));
566 rbd->size = PKT_BUF_SZ;
567#ifdef __mc68000__
568 cache_clear(virt_to_phys(skb->data), PKT_BUF_SZ);
569#endif
570 }
571 lp->rbd_head = lp->rbds;
572 rbd = lp->rbds + rx_ring_size - 1;
573 rbd->v_next = lp->rbds;
574 rbd->b_next = WSWAPrbd(virt_to_bus(lp->rbds));
575
576
577
578 for (i = 0, rfd = lp->rfds; i < rx_ring_size; i++, rfd++) {
579 rfd->rbd = I596_NULL;
580 rfd->v_next = rfd+1;
581 rfd->v_prev = rfd-1;
582 rfd->b_next = WSWAPrfd(virt_to_bus(rfd+1));
583 rfd->cmd = CMD_FLEX;
584 }
585 lp->rfd_head = lp->rfds;
586 lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds));
587 rfd = lp->rfds;
588 rfd->rbd = lp->rbd_head;
589 rfd->v_prev = lp->rfds + rx_ring_size - 1;
590 rfd = lp->rfds + rx_ring_size - 1;
591 rfd->v_next = lp->rfds;
592 rfd->b_next = WSWAPrfd(virt_to_bus(lp->rfds));
593 rfd->cmd = CMD_EOL|CMD_FLEX;
594
595 return 0;
596}
597
598
599static void rebuild_rx_bufs(struct net_device *dev)
600{
601 struct i596_private *lp = dev->ml_priv;
602 int i;
603
604
605
606 for (i = 0; i < rx_ring_size; i++) {
607 lp->rfds[i].rbd = I596_NULL;
608 lp->rfds[i].cmd = CMD_FLEX;
609 }
610 lp->rfds[rx_ring_size-1].cmd = CMD_EOL|CMD_FLEX;
611 lp->rfd_head = lp->rfds;
612 lp->scb.rfd = WSWAPrfd(virt_to_bus(lp->rfds));
613 lp->rbd_head = lp->rbds;
614 lp->rfds[0].rbd = WSWAPrbd(virt_to_bus(lp->rbds));
615}
616
617
618static int init_i596_mem(struct net_device *dev)
619{
620 struct i596_private *lp = dev->ml_priv;
621#if !defined(ENABLE_MVME16x_NET) && !defined(ENABLE_BVME6000_NET) || defined(ENABLE_APRICOT)
622 short ioaddr = dev->base_addr;
623#endif
624 unsigned long flags;
625
626 MPU_PORT(dev, PORT_RESET, NULL);
627
628 udelay(100);
629
630#if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
631#ifdef ENABLE_MVME16x_NET
632 if (MACH_IS_MVME16x) {
633 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
634
635
636 pcc2[0x28] = 1;
637 pcc2[0x2a] = 0x48;
638
639
640
641
642 pcc2[0x2b] = 0x08;
643 }
644#endif
645#ifdef ENABLE_BVME6000_NET
646 if (MACH_IS_BVME6000) {
647 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
648
649 *ethirq = 1;
650 }
651#endif
652
653
654
655 MPU_PORT(dev, PORT_ALTSCP, (void *)virt_to_bus((void *)&lp->scp));
656
657#elif defined(ENABLE_APRICOT)
658
659 {
660 u32 scp = virt_to_bus(&lp->scp);
661
662
663 outw(0, ioaddr);
664 outw(0, ioaddr);
665 outb(4, ioaddr + 0xf);
666 outw(scp | 2, ioaddr);
667 outw(scp >> 16, ioaddr);
668 }
669#endif
670
671 lp->last_cmd = jiffies;
672
673#ifdef ENABLE_MVME16x_NET
674 if (MACH_IS_MVME16x)
675 lp->scp.sysbus = 0x00000054;
676#endif
677#ifdef ENABLE_BVME6000_NET
678 if (MACH_IS_BVME6000)
679 lp->scp.sysbus = 0x0000004c;
680#endif
681#ifdef ENABLE_APRICOT
682 if (MACH_IS_APRICOT)
683 lp->scp.sysbus = 0x00440000;
684#endif
685
686 lp->scp.iscp = WSWAPiscp(virt_to_bus((void *)&lp->iscp));
687 lp->iscp.scb = WSWAPscb(virt_to_bus((void *)&lp->scb));
688 lp->iscp.stat = ISCP_BUSY;
689 lp->cmd_backlog = 0;
690
691 lp->cmd_head = lp->scb.cmd = I596_NULL;
692
693#ifdef ENABLE_BVME6000_NET
694 if (MACH_IS_BVME6000) {
695 lp->scb.t_on = 7 * 25;
696 lp->scb.t_off = 1 * 25;
697 }
698#endif
699
700 DEB(DEB_INIT,printk(KERN_DEBUG "%s: starting i82596.\n", dev->name));
701
702#if defined(ENABLE_APRICOT)
703 (void) inb(ioaddr + 0x10);
704 outb(4, ioaddr + 0xf);
705#endif
706 CA(dev);
707
708 if (wait_istat(dev,lp,1000,"initialization timed out"))
709 goto failed;
710 DEB(DEB_INIT,printk(KERN_DEBUG "%s: i82596 initialization successful\n", dev->name));
711
712
713 rebuild_rx_bufs(dev);
714 lp->scb.command = 0;
715
716#ifdef ENABLE_MVME16x_NET
717 if (MACH_IS_MVME16x) {
718 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
719
720
721 pcc2[0x2a] = 0x55;
722 pcc2[0x2b] = 0x15;
723 }
724#endif
725#ifdef ENABLE_BVME6000_NET
726 if (MACH_IS_BVME6000) {
727 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
728
729 *ethirq = 3;
730 }
731#endif
732
733
734 DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdConfigure\n", dev->name));
735 memcpy(lp->cf_cmd.i596_config, init_setup, 14);
736 lp->cf_cmd.cmd.command = CmdConfigure;
737 i596_add_cmd(dev, &lp->cf_cmd.cmd);
738
739 DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdSASetup\n", dev->name));
740 memcpy(lp->sa_cmd.eth_addr, dev->dev_addr, 6);
741 lp->sa_cmd.cmd.command = CmdSASetup;
742 i596_add_cmd(dev, &lp->sa_cmd.cmd);
743
744 DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdTDR\n", dev->name));
745 lp->tdr_cmd.cmd.command = CmdTDR;
746 i596_add_cmd(dev, &lp->tdr_cmd.cmd);
747
748 spin_lock_irqsave (&lp->lock, flags);
749
750 if (wait_cmd(dev,lp,1000,"timed out waiting to issue RX_START")) {
751 spin_unlock_irqrestore (&lp->lock, flags);
752 goto failed;
753 }
754 DEB(DEB_INIT,printk(KERN_DEBUG "%s: Issuing RX_START\n", dev->name));
755 lp->scb.command = RX_START;
756 CA(dev);
757
758 spin_unlock_irqrestore (&lp->lock, flags);
759
760 if (wait_cmd(dev,lp,1000,"RX_START not processed"))
761 goto failed;
762 DEB(DEB_INIT,printk(KERN_DEBUG "%s: Receive unit started OK\n", dev->name));
763 return 0;
764
765failed:
766 printk(KERN_CRIT "%s: Failed to initialise 82596\n", dev->name);
767 MPU_PORT(dev, PORT_RESET, NULL);
768 return -1;
769}
770
771static inline int i596_rx(struct net_device *dev)
772{
773 struct i596_private *lp = dev->ml_priv;
774 struct i596_rfd *rfd;
775 struct i596_rbd *rbd;
776 int frames = 0;
777
778 DEB(DEB_RXFRAME,printk(KERN_DEBUG "i596_rx(), rfd_head %p, rbd_head %p\n",
779 lp->rfd_head, lp->rbd_head));
780
781 rfd = lp->rfd_head;
782
783 while ((rfd->stat) & STAT_C) {
784 if (rfd->rbd == I596_NULL)
785 rbd = I596_NULL;
786 else if (rfd->rbd == lp->rbd_head->b_addr)
787 rbd = lp->rbd_head;
788 else {
789 printk(KERN_CRIT "%s: rbd chain broken!\n", dev->name);
790
791 rbd = I596_NULL;
792 }
793 DEB(DEB_RXFRAME, printk(KERN_DEBUG " rfd %p, rfd.rbd %p, rfd.stat %04x\n",
794 rfd, rfd->rbd, rfd->stat));
795
796 if (rbd != I596_NULL && ((rfd->stat) & STAT_OK)) {
797
798 int pkt_len = rbd->count & 0x3fff;
799 struct sk_buff *skb = rbd->skb;
800 int rx_in_place = 0;
801
802 DEB(DEB_RXADDR,print_eth(rbd->v_data, "received"));
803 frames++;
804
805
806
807
808
809 if (pkt_len > rx_copybreak) {
810 struct sk_buff *newskb;
811
812
813 newskb = dev_alloc_skb(PKT_BUF_SZ);
814 if (newskb == NULL) {
815 skb = NULL;
816 goto memory_squeeze;
817 }
818
819 skb_put(skb, pkt_len);
820 rx_in_place = 1;
821 rbd->skb = newskb;
822 newskb->dev = dev;
823 rbd->v_data = newskb->data;
824 rbd->b_data = WSWAPchar(virt_to_bus(newskb->data));
825#ifdef __mc68000__
826 cache_clear(virt_to_phys(newskb->data), PKT_BUF_SZ);
827#endif
828 }
829 else
830 skb = dev_alloc_skb(pkt_len + 2);
831memory_squeeze:
832 if (skb == NULL) {
833
834 printk(KERN_WARNING "%s: i596_rx Memory squeeze, dropping packet.\n", dev->name);
835 dev->stats.rx_dropped++;
836 }
837 else {
838 if (!rx_in_place) {
839
840 skb_reserve(skb, 2);
841 memcpy(skb_put(skb,pkt_len), rbd->v_data, pkt_len);
842 }
843 skb->protocol=eth_type_trans(skb,dev);
844 skb->len = pkt_len;
845#ifdef __mc68000__
846 cache_clear(virt_to_phys(rbd->skb->data),
847 pkt_len);
848#endif
849 netif_rx(skb);
850 dev->stats.rx_packets++;
851 dev->stats.rx_bytes+=pkt_len;
852 }
853 }
854 else {
855 DEB(DEB_ERRORS, printk(KERN_DEBUG "%s: Error, rfd.stat = 0x%04x\n",
856 dev->name, rfd->stat));
857 dev->stats.rx_errors++;
858 if ((rfd->stat) & 0x0001)
859 dev->stats.collisions++;
860 if ((rfd->stat) & 0x0080)
861 dev->stats.rx_length_errors++;
862 if ((rfd->stat) & 0x0100)
863 dev->stats.rx_over_errors++;
864 if ((rfd->stat) & 0x0200)
865 dev->stats.rx_fifo_errors++;
866 if ((rfd->stat) & 0x0400)
867 dev->stats.rx_frame_errors++;
868 if ((rfd->stat) & 0x0800)
869 dev->stats.rx_crc_errors++;
870 if ((rfd->stat) & 0x1000)
871 dev->stats.rx_length_errors++;
872 }
873
874
875
876 if (rbd != I596_NULL && (rbd->count & 0x4000)) {
877 rbd->count = 0;
878 lp->rbd_head = rbd->v_next;
879 }
880
881
882
883 rfd->rbd = I596_NULL;
884 rfd->stat = 0;
885 rfd->cmd = CMD_EOL|CMD_FLEX;
886 rfd->count = 0;
887
888
889
890 rfd->v_prev->cmd = CMD_FLEX;
891
892
893
894 lp->scb.rfd = rfd->b_next;
895 lp->rfd_head = rfd->v_next;
896 rfd = lp->rfd_head;
897 }
898
899 DEB(DEB_RXFRAME,printk(KERN_DEBUG "frames %d\n", frames));
900
901 return 0;
902}
903
904
905static void i596_cleanup_cmd(struct net_device *dev, struct i596_private *lp)
906{
907 struct i596_cmd *ptr;
908
909 while (lp->cmd_head != I596_NULL) {
910 ptr = lp->cmd_head;
911 lp->cmd_head = ptr->v_next;
912 lp->cmd_backlog--;
913
914 switch ((ptr->command) & 0x7) {
915 case CmdTx:
916 {
917 struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
918 struct sk_buff *skb = tx_cmd->skb;
919
920 dev_kfree_skb(skb);
921
922 dev->stats.tx_errors++;
923 dev->stats.tx_aborted_errors++;
924
925 ptr->v_next = ptr->b_next = I596_NULL;
926 tx_cmd->cmd.command = 0;
927 break;
928 }
929 default:
930 ptr->v_next = ptr->b_next = I596_NULL;
931 }
932 }
933
934 wait_cmd(dev,lp,100,"i596_cleanup_cmd timed out");
935 lp->scb.cmd = I596_NULL;
936}
937
938static void i596_reset(struct net_device *dev, struct i596_private *lp,
939 int ioaddr)
940{
941 unsigned long flags;
942
943 DEB(DEB_RESET,printk(KERN_DEBUG "i596_reset\n"));
944
945 spin_lock_irqsave (&lp->lock, flags);
946
947 wait_cmd(dev,lp,100,"i596_reset timed out");
948
949 netif_stop_queue(dev);
950
951 lp->scb.command = CUC_ABORT | RX_ABORT;
952 CA(dev);
953
954
955 wait_cmd(dev,lp,1000,"i596_reset 2 timed out");
956 spin_unlock_irqrestore (&lp->lock, flags);
957
958 i596_cleanup_cmd(dev,lp);
959 i596_rx(dev);
960
961 netif_start_queue(dev);
962 init_i596_mem(dev);
963}
964
965static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd)
966{
967 struct i596_private *lp = dev->ml_priv;
968 int ioaddr = dev->base_addr;
969 unsigned long flags;
970
971 DEB(DEB_ADDCMD,printk(KERN_DEBUG "i596_add_cmd\n"));
972
973 cmd->status = 0;
974 cmd->command |= (CMD_EOL | CMD_INTR);
975 cmd->v_next = cmd->b_next = I596_NULL;
976
977 spin_lock_irqsave (&lp->lock, flags);
978
979 if (lp->cmd_head != I596_NULL) {
980 lp->cmd_tail->v_next = cmd;
981 lp->cmd_tail->b_next = WSWAPcmd(virt_to_bus(&cmd->status));
982 } else {
983 lp->cmd_head = cmd;
984 wait_cmd(dev,lp,100,"i596_add_cmd timed out");
985 lp->scb.cmd = WSWAPcmd(virt_to_bus(&cmd->status));
986 lp->scb.command = CUC_START;
987 CA(dev);
988 }
989 lp->cmd_tail = cmd;
990 lp->cmd_backlog++;
991
992 spin_unlock_irqrestore (&lp->lock, flags);
993
994 if (lp->cmd_backlog > max_cmd_backlog) {
995 unsigned long tickssofar = jiffies - lp->last_cmd;
996
997 if (tickssofar < ticks_limit)
998 return;
999
1000 printk(KERN_NOTICE "%s: command unit timed out, status resetting.\n", dev->name);
1001
1002 i596_reset(dev, lp, ioaddr);
1003 }
1004}
1005
1006static int i596_open(struct net_device *dev)
1007{
1008 int res = 0;
1009
1010 DEB(DEB_OPEN,printk(KERN_DEBUG "%s: i596_open() irq %d.\n", dev->name, dev->irq));
1011
1012 if (request_irq(dev->irq, i596_interrupt, 0, "i82596", dev)) {
1013 printk(KERN_ERR "%s: IRQ %d not free\n", dev->name, dev->irq);
1014 return -EAGAIN;
1015 }
1016#ifdef ENABLE_MVME16x_NET
1017 if (MACH_IS_MVME16x) {
1018 if (request_irq(0x56, i596_error, 0, "i82596_error", dev)) {
1019 res = -EAGAIN;
1020 goto err_irq_dev;
1021 }
1022 }
1023#endif
1024 res = init_rx_bufs(dev);
1025 if (res)
1026 goto err_irq_56;
1027
1028 netif_start_queue(dev);
1029
1030 if (init_i596_mem(dev)) {
1031 res = -EAGAIN;
1032 goto err_queue;
1033 }
1034
1035 return 0;
1036
1037err_queue:
1038 netif_stop_queue(dev);
1039 remove_rx_bufs(dev);
1040err_irq_56:
1041#ifdef ENABLE_MVME16x_NET
1042 free_irq(0x56, dev);
1043err_irq_dev:
1044#endif
1045 free_irq(dev->irq, dev);
1046
1047 return res;
1048}
1049
1050static void i596_tx_timeout (struct net_device *dev)
1051{
1052 struct i596_private *lp = dev->ml_priv;
1053 int ioaddr = dev->base_addr;
1054
1055
1056 DEB(DEB_ERRORS,printk(KERN_ERR "%s: transmit timed out, status resetting.\n",
1057 dev->name));
1058
1059 dev->stats.tx_errors++;
1060
1061
1062 if (lp->last_restart == dev->stats.tx_packets) {
1063 DEB(DEB_ERRORS,printk(KERN_ERR "Resetting board.\n"));
1064
1065 i596_reset (dev, lp, ioaddr);
1066 } else {
1067
1068 DEB(DEB_ERRORS,printk(KERN_ERR "Kicking board.\n"));
1069 lp->scb.command = CUC_START | RX_START;
1070 CA (dev);
1071 lp->last_restart = dev->stats.tx_packets;
1072 }
1073
1074 dev->trans_start = jiffies;
1075 netif_wake_queue (dev);
1076}
1077
1078static netdev_tx_t i596_start_xmit(struct sk_buff *skb, struct net_device *dev)
1079{
1080 struct i596_private *lp = dev->ml_priv;
1081 struct tx_cmd *tx_cmd;
1082 struct i596_tbd *tbd;
1083 short length = skb->len;
1084
1085 DEB(DEB_STARTTX,printk(KERN_DEBUG "%s: i596_start_xmit(%x,%p) called\n",
1086 dev->name, skb->len, skb->data));
1087
1088 if (skb->len < ETH_ZLEN) {
1089 if (skb_padto(skb, ETH_ZLEN))
1090 return NETDEV_TX_OK;
1091 length = ETH_ZLEN;
1092 }
1093 netif_stop_queue(dev);
1094
1095 tx_cmd = lp->tx_cmds + lp->next_tx_cmd;
1096 tbd = lp->tbds + lp->next_tx_cmd;
1097
1098 if (tx_cmd->cmd.command) {
1099 printk(KERN_NOTICE "%s: xmit ring full, dropping packet.\n",
1100 dev->name);
1101 dev->stats.tx_dropped++;
1102
1103 dev_kfree_skb(skb);
1104 } else {
1105 if (++lp->next_tx_cmd == TX_RING_SIZE)
1106 lp->next_tx_cmd = 0;
1107 tx_cmd->tbd = WSWAPtbd(virt_to_bus(tbd));
1108 tbd->next = I596_NULL;
1109
1110 tx_cmd->cmd.command = CMD_FLEX | CmdTx;
1111 tx_cmd->skb = skb;
1112
1113 tx_cmd->pad = 0;
1114 tx_cmd->size = 0;
1115 tbd->pad = 0;
1116 tbd->size = EOF | length;
1117
1118 tbd->data = WSWAPchar(virt_to_bus(skb->data));
1119
1120#ifdef __mc68000__
1121 cache_push(virt_to_phys(skb->data), length);
1122#endif
1123 DEB(DEB_TXADDR,print_eth(skb->data, "tx-queued"));
1124 i596_add_cmd(dev, &tx_cmd->cmd);
1125
1126 dev->stats.tx_packets++;
1127 dev->stats.tx_bytes += length;
1128 }
1129
1130 netif_start_queue(dev);
1131
1132 return NETDEV_TX_OK;
1133}
1134
1135static void print_eth(unsigned char *add, char *str)
1136{
1137 printk(KERN_DEBUG "i596 0x%p, %pM --> %pM %02X%02X, %s\n",
1138 add, add + 6, add, add[12], add[13], str);
1139}
1140
1141static int io = 0x300;
1142static int irq = 10;
1143
1144static const struct net_device_ops i596_netdev_ops = {
1145 .ndo_open = i596_open,
1146 .ndo_stop = i596_close,
1147 .ndo_start_xmit = i596_start_xmit,
1148 .ndo_set_multicast_list = set_multicast_list,
1149 .ndo_tx_timeout = i596_tx_timeout,
1150 .ndo_change_mtu = eth_change_mtu,
1151 .ndo_set_mac_address = eth_mac_addr,
1152 .ndo_validate_addr = eth_validate_addr,
1153};
1154
1155struct net_device * __init i82596_probe(int unit)
1156{
1157 struct net_device *dev;
1158 int i;
1159 struct i596_private *lp;
1160 char eth_addr[8];
1161 static int probed;
1162 int err;
1163
1164 if (probed)
1165 return ERR_PTR(-ENODEV);
1166 probed++;
1167
1168 dev = alloc_etherdev(0);
1169 if (!dev)
1170 return ERR_PTR(-ENOMEM);
1171
1172 if (unit >= 0) {
1173 sprintf(dev->name, "eth%d", unit);
1174 netdev_boot_setup_check(dev);
1175 } else {
1176 dev->base_addr = io;
1177 dev->irq = irq;
1178 }
1179
1180#ifdef ENABLE_MVME16x_NET
1181 if (MACH_IS_MVME16x) {
1182 if (mvme16x_config & MVME16x_CONFIG_NO_ETHERNET) {
1183 printk(KERN_NOTICE "Ethernet probe disabled - chip not present\n");
1184 err = -ENODEV;
1185 goto out;
1186 }
1187 memcpy(eth_addr, (void *) 0xfffc1f2c, 6);
1188 dev->base_addr = MVME_I596_BASE;
1189 dev->irq = (unsigned) MVME16x_IRQ_I596;
1190 goto found;
1191 }
1192#endif
1193#ifdef ENABLE_BVME6000_NET
1194 if (MACH_IS_BVME6000) {
1195 volatile unsigned char *rtc = (unsigned char *) BVME_RTC_BASE;
1196 unsigned char msr = rtc[3];
1197 int i;
1198
1199 rtc[3] |= 0x80;
1200 for (i = 0; i < 6; i++)
1201 eth_addr[i] = rtc[i * 4 + 7];
1202 rtc[3] = msr;
1203 dev->base_addr = BVME_I596_BASE;
1204 dev->irq = (unsigned) BVME_IRQ_I596;
1205 goto found;
1206 }
1207#endif
1208#ifdef ENABLE_APRICOT
1209 {
1210 int checksum = 0;
1211 int ioaddr = 0x300;
1212
1213
1214
1215
1216 if (!request_region(ioaddr, I596_TOTAL_SIZE, DRV_NAME)) {
1217 printk(KERN_ERR "82596: IO address 0x%04x in use\n", ioaddr);
1218 err = -EBUSY;
1219 goto out;
1220 }
1221
1222 dev->base_addr = ioaddr;
1223
1224 for (i = 0; i < 8; i++) {
1225 eth_addr[i] = inb(ioaddr + 8 + i);
1226 checksum += eth_addr[i];
1227 }
1228
1229
1230
1231
1232
1233
1234
1235 if ((checksum % 0x100) ||
1236 (memcmp(eth_addr, "\x00\x00\x49", 3) != 0)) {
1237 err = -ENODEV;
1238 goto out1;
1239 }
1240
1241 dev->irq = 10;
1242 goto found;
1243 }
1244#endif
1245 err = -ENODEV;
1246 goto out;
1247
1248found:
1249 dev->mem_start = (int)__get_free_pages(GFP_ATOMIC, 0);
1250 if (!dev->mem_start) {
1251 err = -ENOMEM;
1252 goto out1;
1253 }
1254
1255 DEB(DEB_PROBE,printk(KERN_INFO "%s: 82596 at %#3lx,", dev->name, dev->base_addr));
1256
1257 for (i = 0; i < 6; i++)
1258 DEB(DEB_PROBE,printk(" %2.2X", dev->dev_addr[i] = eth_addr[i]));
1259
1260 DEB(DEB_PROBE,printk(" IRQ %d.\n", dev->irq));
1261
1262 DEB(DEB_PROBE,printk(KERN_INFO "%s", version));
1263
1264
1265 dev->netdev_ops = &i596_netdev_ops;
1266 dev->watchdog_timeo = TX_TIMEOUT;
1267
1268 dev->ml_priv = (void *)(dev->mem_start);
1269
1270 lp = dev->ml_priv;
1271 DEB(DEB_INIT,printk(KERN_DEBUG "%s: lp at 0x%08lx (%zd bytes), "
1272 "lp->scb at 0x%08lx\n",
1273 dev->name, (unsigned long)lp,
1274 sizeof(struct i596_private), (unsigned long)&lp->scb));
1275 memset((void *) lp, 0, sizeof(struct i596_private));
1276
1277#ifdef __mc68000__
1278 cache_push(virt_to_phys((void *)(dev->mem_start)), 4096);
1279 cache_clear(virt_to_phys((void *)(dev->mem_start)), 4096);
1280 kernel_set_cachemode((void *)(dev->mem_start), 4096, IOMAP_NOCACHE_SER);
1281#endif
1282 lp->scb.command = 0;
1283 lp->scb.cmd = I596_NULL;
1284 lp->scb.rfd = I596_NULL;
1285 spin_lock_init(&lp->lock);
1286
1287 err = register_netdev(dev);
1288 if (err)
1289 goto out2;
1290 return dev;
1291out2:
1292#ifdef __mc68000__
1293
1294
1295
1296 kernel_set_cachemode((void *)(dev->mem_start), 4096,
1297 IOMAP_FULL_CACHING);
1298#endif
1299 free_page ((u32)(dev->mem_start));
1300out1:
1301#ifdef ENABLE_APRICOT
1302 release_region(dev->base_addr, I596_TOTAL_SIZE);
1303#endif
1304out:
1305 free_netdev(dev);
1306 return ERR_PTR(err);
1307}
1308
1309static irqreturn_t i596_interrupt(int irq, void *dev_id)
1310{
1311 struct net_device *dev = dev_id;
1312 struct i596_private *lp;
1313 short ioaddr;
1314 unsigned short status, ack_cmd = 0;
1315 int handled = 0;
1316
1317#ifdef ENABLE_BVME6000_NET
1318 if (MACH_IS_BVME6000) {
1319 if (*(char *) BVME_LOCAL_IRQ_STAT & BVME_ETHERR) {
1320 i596_error(irq, dev_id);
1321 return IRQ_HANDLED;
1322 }
1323 }
1324#endif
1325 if (dev == NULL) {
1326 printk(KERN_ERR "i596_interrupt(): irq %d for unknown device.\n", irq);
1327 return IRQ_NONE;
1328 }
1329
1330 ioaddr = dev->base_addr;
1331 lp = dev->ml_priv;
1332
1333 spin_lock (&lp->lock);
1334
1335 wait_cmd(dev,lp,100,"i596 interrupt, timeout");
1336 status = lp->scb.status;
1337
1338 DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt, IRQ %d, status %4.4x.\n",
1339 dev->name, irq, status));
1340
1341 ack_cmd = status & 0xf000;
1342
1343 if ((status & 0x8000) || (status & 0x2000)) {
1344 struct i596_cmd *ptr;
1345
1346 handled = 1;
1347 if ((status & 0x8000))
1348 DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt completed command.\n", dev->name));
1349 if ((status & 0x2000))
1350 DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt command unit inactive %x.\n", dev->name, status & 0x0700));
1351
1352 while ((lp->cmd_head != I596_NULL) && (lp->cmd_head->status & STAT_C)) {
1353 ptr = lp->cmd_head;
1354
1355 DEB(DEB_STATUS,printk(KERN_DEBUG "cmd_head->status = %04x, ->command = %04x\n",
1356 lp->cmd_head->status, lp->cmd_head->command));
1357 lp->cmd_head = ptr->v_next;
1358 lp->cmd_backlog--;
1359
1360 switch ((ptr->command) & 0x7) {
1361 case CmdTx:
1362 {
1363 struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
1364 struct sk_buff *skb = tx_cmd->skb;
1365
1366 if ((ptr->status) & STAT_OK) {
1367 DEB(DEB_TXADDR,print_eth(skb->data, "tx-done"));
1368 } else {
1369 dev->stats.tx_errors++;
1370 if ((ptr->status) & 0x0020)
1371 dev->stats.collisions++;
1372 if (!((ptr->status) & 0x0040))
1373 dev->stats.tx_heartbeat_errors++;
1374 if ((ptr->status) & 0x0400)
1375 dev->stats.tx_carrier_errors++;
1376 if ((ptr->status) & 0x0800)
1377 dev->stats.collisions++;
1378 if ((ptr->status) & 0x1000)
1379 dev->stats.tx_aborted_errors++;
1380 }
1381
1382 dev_kfree_skb_irq(skb);
1383
1384 tx_cmd->cmd.command = 0;
1385 break;
1386 }
1387 case CmdTDR:
1388 {
1389 unsigned short status = ((struct tdr_cmd *)ptr)->status;
1390
1391 if (status & 0x8000) {
1392 DEB(DEB_TDR,printk(KERN_INFO "%s: link ok.\n", dev->name));
1393 } else {
1394 if (status & 0x4000)
1395 printk(KERN_ERR "%s: Transceiver problem.\n", dev->name);
1396 if (status & 0x2000)
1397 printk(KERN_ERR "%s: Termination problem.\n", dev->name);
1398 if (status & 0x1000)
1399 printk(KERN_ERR "%s: Short circuit.\n", dev->name);
1400
1401 DEB(DEB_TDR,printk(KERN_INFO "%s: Time %d.\n", dev->name, status & 0x07ff));
1402 }
1403 break;
1404 }
1405 case CmdConfigure:
1406 case CmdMulticastList:
1407
1408 ptr->command = 0;
1409 break;
1410 }
1411 ptr->v_next = ptr->b_next = I596_NULL;
1412 lp->last_cmd = jiffies;
1413 }
1414
1415 ptr = lp->cmd_head;
1416 while ((ptr != I596_NULL) && (ptr != lp->cmd_tail)) {
1417 ptr->command &= 0x1fff;
1418 ptr = ptr->v_next;
1419 }
1420
1421 if ((lp->cmd_head != I596_NULL))
1422 ack_cmd |= CUC_START;
1423 lp->scb.cmd = WSWAPcmd(virt_to_bus(&lp->cmd_head->status));
1424 }
1425 if ((status & 0x1000) || (status & 0x4000)) {
1426 if ((status & 0x4000))
1427 DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt received a frame.\n", dev->name));
1428 i596_rx(dev);
1429
1430 if (status & 0x1000) {
1431 if (netif_running(dev)) {
1432 DEB(DEB_ERRORS,printk(KERN_ERR "%s: i596 interrupt receive unit inactive, status 0x%x\n", dev->name, status));
1433 ack_cmd |= RX_START;
1434 dev->stats.rx_errors++;
1435 dev->stats.rx_fifo_errors++;
1436 rebuild_rx_bufs(dev);
1437 }
1438 }
1439 }
1440 wait_cmd(dev,lp,100,"i596 interrupt, timeout");
1441 lp->scb.command = ack_cmd;
1442
1443#ifdef ENABLE_MVME16x_NET
1444 if (MACH_IS_MVME16x) {
1445
1446
1447 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
1448
1449 pcc2[0x2a] |= 0x08;
1450 }
1451#endif
1452#ifdef ENABLE_BVME6000_NET
1453 if (MACH_IS_BVME6000) {
1454 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
1455
1456 *ethirq = 1;
1457 *ethirq = 3;
1458 }
1459#endif
1460#ifdef ENABLE_APRICOT
1461 (void) inb(ioaddr + 0x10);
1462 outb(4, ioaddr + 0xf);
1463#endif
1464 CA(dev);
1465
1466 DEB(DEB_INTS,printk(KERN_DEBUG "%s: exiting interrupt.\n", dev->name));
1467
1468 spin_unlock (&lp->lock);
1469 return IRQ_RETVAL(handled);
1470}
1471
1472static int i596_close(struct net_device *dev)
1473{
1474 struct i596_private *lp = dev->ml_priv;
1475 unsigned long flags;
1476
1477 netif_stop_queue(dev);
1478
1479 DEB(DEB_INIT,printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x.\n",
1480 dev->name, lp->scb.status));
1481
1482 spin_lock_irqsave(&lp->lock, flags);
1483
1484 wait_cmd(dev,lp,100,"close1 timed out");
1485 lp->scb.command = CUC_ABORT | RX_ABORT;
1486 CA(dev);
1487
1488 wait_cmd(dev,lp,100,"close2 timed out");
1489
1490 spin_unlock_irqrestore(&lp->lock, flags);
1491 DEB(DEB_STRUCT,i596_display_data(dev));
1492 i596_cleanup_cmd(dev,lp);
1493
1494#ifdef ENABLE_MVME16x_NET
1495 if (MACH_IS_MVME16x) {
1496 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
1497
1498
1499 pcc2[0x28] = 1;
1500 pcc2[0x2a] = 0x40;
1501 pcc2[0x2b] = 0x40;
1502 }
1503#endif
1504#ifdef ENABLE_BVME6000_NET
1505 if (MACH_IS_BVME6000) {
1506 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
1507
1508 *ethirq = 1;
1509 }
1510#endif
1511
1512#ifdef ENABLE_MVME16x_NET
1513 free_irq(0x56, dev);
1514#endif
1515 free_irq(dev->irq, dev);
1516 remove_rx_bufs(dev);
1517
1518 return 0;
1519}
1520
1521
1522
1523
1524
1525static void set_multicast_list(struct net_device *dev)
1526{
1527 struct i596_private *lp = dev->ml_priv;
1528 int config = 0, cnt;
1529
1530 DEB(DEB_MULTI,printk(KERN_DEBUG "%s: set multicast list, %d entries, promisc %s, allmulti %s\n",
1531 dev->name, netdev_mc_count(dev),
1532 dev->flags & IFF_PROMISC ? "ON" : "OFF",
1533 dev->flags & IFF_ALLMULTI ? "ON" : "OFF"));
1534
1535 if (wait_cfg(dev, &lp->cf_cmd.cmd, 1000, "config change request timed out"))
1536 return;
1537
1538 if ((dev->flags & IFF_PROMISC) && !(lp->cf_cmd.i596_config[8] & 0x01)) {
1539 lp->cf_cmd.i596_config[8] |= 0x01;
1540 config = 1;
1541 }
1542 if (!(dev->flags & IFF_PROMISC) && (lp->cf_cmd.i596_config[8] & 0x01)) {
1543 lp->cf_cmd.i596_config[8] &= ~0x01;
1544 config = 1;
1545 }
1546 if ((dev->flags & IFF_ALLMULTI) && (lp->cf_cmd.i596_config[11] & 0x20)) {
1547 lp->cf_cmd.i596_config[11] &= ~0x20;
1548 config = 1;
1549 }
1550 if (!(dev->flags & IFF_ALLMULTI) && !(lp->cf_cmd.i596_config[11] & 0x20)) {
1551 lp->cf_cmd.i596_config[11] |= 0x20;
1552 config = 1;
1553 }
1554 if (config) {
1555 lp->cf_cmd.cmd.command = CmdConfigure;
1556 i596_add_cmd(dev, &lp->cf_cmd.cmd);
1557 }
1558
1559 cnt = netdev_mc_count(dev);
1560 if (cnt > MAX_MC_CNT)
1561 {
1562 cnt = MAX_MC_CNT;
1563 printk(KERN_ERR "%s: Only %d multicast addresses supported",
1564 dev->name, cnt);
1565 }
1566
1567 if (!netdev_mc_empty(dev)) {
1568 struct netdev_hw_addr *ha;
1569 unsigned char *cp;
1570 struct mc_cmd *cmd;
1571
1572 if (wait_cfg(dev, &lp->mc_cmd.cmd, 1000, "multicast list change request timed out"))
1573 return;
1574 cmd = &lp->mc_cmd;
1575 cmd->cmd.command = CmdMulticastList;
1576 cmd->mc_cnt = cnt * ETH_ALEN;
1577 cp = cmd->mc_addrs;
1578 netdev_for_each_mc_addr(ha, dev) {
1579 if (!cnt--)
1580 break;
1581 memcpy(cp, ha->addr, ETH_ALEN);
1582 if (i596_debug > 1)
1583 DEB(DEB_MULTI,printk(KERN_INFO "%s: Adding address %pM\n",
1584 dev->name, cp));
1585 cp += ETH_ALEN;
1586 }
1587 i596_add_cmd(dev, &cmd->cmd);
1588 }
1589}
1590
1591#ifdef MODULE
1592static struct net_device *dev_82596;
1593
1594#ifdef ENABLE_APRICOT
1595module_param(irq, int, 0);
1596MODULE_PARM_DESC(irq, "Apricot IRQ number");
1597#endif
1598
1599static int debug = -1;
1600module_param(debug, int, 0);
1601MODULE_PARM_DESC(debug, "i82596 debug mask");
1602
1603int __init init_module(void)
1604{
1605 if (debug >= 0)
1606 i596_debug = debug;
1607 dev_82596 = i82596_probe(-1);
1608 if (IS_ERR(dev_82596))
1609 return PTR_ERR(dev_82596);
1610 return 0;
1611}
1612
1613void __exit cleanup_module(void)
1614{
1615 unregister_netdev(dev_82596);
1616#ifdef __mc68000__
1617
1618
1619
1620
1621 kernel_set_cachemode((void *)(dev_82596->mem_start), 4096,
1622 IOMAP_FULL_CACHING);
1623#endif
1624 free_page ((u32)(dev_82596->mem_start));
1625#ifdef ENABLE_APRICOT
1626
1627 release_region(dev_82596->base_addr, I596_TOTAL_SIZE);
1628#endif
1629 free_netdev(dev_82596);
1630}
1631
1632#endif
1633
