?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / net / 82596.c
blobf91853073ace6dfc817e4a8b934931a4347a5f12
1 /* 82596.c: A generic 82596 ethernet driver for linux. */
2 /*
3 Based on Apricot.c
4 Written 1994 by Mark Evans.
5 This driver is for the Apricot 82596 bus-master interface
6
7 Modularised 12/94 Mark Evans
8
9
10 Modified to support the 82596 ethernet chips on 680x0 VME boards.
11 by Richard Hirst <richard@sleepie.demon.co.uk>
12 Renamed to be 82596.c
13
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.
18
19 TBD:
20 * look at deferring rx frames rather than discarding (as per tulip)
21 * handle tx ring full as per tulip
22 * performance test to tune rx_copybreak
23
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
29 i596.
30
31 Driver skeleton
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.
37
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
40
41 */
42
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
62 static char version[] __initdata =
63 "82596.c $Revision: 1.5 $\n";
64
65 #define DRV_NAME "82596"
66
67 /* DEBUG flags
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 * Define various macros for Channel Attention, word swapping etc., dependent
111 * on architecture. MVME and BVME are 680x0 based, otherwise it is Intel.
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 * 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.
141 */
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 */
146
147 static int i596_debug = (DEB_SERIOUS|DEB_PROBE);
148
149 MODULE_AUTHOR("Richard Hirst");
150 MODULE_DESCRIPTION("i82596 driver");
151 MODULE_LICENSE("GPL");
152
153 module_param(i596_debug, int, 0);
154 MODULE_PARM_DESC(i596_debug, "i82596 debug mask");
155
156
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).
159 */
160 static 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 /* 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. */
172
173 #define CMD_FLEX 0x0008 /* Enable flexible memory model */
174
175 enum 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 /* 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 */
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 5
195
196
197 struct 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
206 struct i596_tbd {
207 unsigned short size;
208 unsigned short pad;
209 struct i596_tbd *next;
210 char *data;
211 };
212
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
220 * type.
221 */
222
223 struct i596_cmd {
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 */
228 };
229
230 struct 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; /* So we can free it after tx */
236 };
237
238 struct tdr_cmd {
239 struct i596_cmd cmd;
240 unsigned short status;
241 unsigned short pad;
242 };
243
244 struct mc_cmd {
245 struct i596_cmd cmd;
246 short mc_cnt;
247 char mc_addrs[MAX_MC_CNT*6];
248 };
249
250 struct sa_cmd {
251 struct i596_cmd cmd;
252 char eth_addr[8];
253 };
254
255 struct cf_cmd {
256 struct i596_cmd cmd;
257 char i596_config[16];
258 };
259
260 struct i596_rfd {
261 unsigned short stat;
262 unsigned short cmd;
263 struct i596_rfd *b_next; /* Address from i596 viewpoint */
264 struct i596_rbd *rbd;
265 unsigned short count;
266 unsigned short size;
267 struct i596_rfd *v_next; /* Address from CPUs viewpoint */
268 struct i596_rfd *v_prev;
269 };
270
271 struct i596_rbd {
272 unsigned short count;
273 unsigned short zero1;
274 struct i596_rbd *b_next;
275 unsigned char *b_data; /* Address from i596 viewpoint */
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; /* This rbd addr from i596 view */
281 unsigned char *v_data; /* Address from CPUs viewpoint */
282 };
283
284 #define TX_RING_SIZE 64
285 #define RX_RING_SIZE 16
286
287 struct 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
302 struct i596_iscp {
303 unsigned long stat;
304 struct i596_scb *scb;
305 };
306
307 struct i596_scp {
308 unsigned long sysbus;
309 unsigned long pad;
310 struct i596_iscp *iscp;
311 };
312
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;
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
337 static char init_setup[] =
338 {
339 0x8E, /* length, prefetch on */
340 0xC8, /* fifo to 8, monitor off */
341 #ifdef CONFIG_VME
342 0xc0, /* don't save bad frames */
343 #else
344 0x80, /* don't save bad frames */
345 #endif
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 */
354 0xff,
355 0x00,
356 0x7f /* *multi IA */ };
357
358 static int i596_open(struct net_device *dev);
359 static netdev_tx_t 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);
366
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;
370
371
372 static 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
394 static 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
415 static 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
429 static 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
443 static 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
458 static 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)
503 static 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
528 static 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
542 static 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 /* First build the Receive Buffer Descriptor List */
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 /* Now build the Receive Frame Descriptor List */
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
599 static void rebuild_rx_bufs(struct net_device *dev)
600 {
601 struct i596_private *lp = dev->ml_priv;
602 int i;
603
604 /* Ensure rx frame/buffer descriptors are tidy */
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
618 static 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) || \
622 defined(ENABLE_APRICOT)
623 short ioaddr = dev->base_addr;
624 #endif
625 unsigned long flags;
626
627 MPU_PORT(dev, PORT_RESET, NULL);
628
629 udelay(100); /* Wait 100us - seems to help */
630
631 #if defined(ENABLE_MVME16x_NET) || defined(ENABLE_BVME6000_NET)
632 #ifdef ENABLE_MVME16x_NET
633 if (MACH_IS_MVME16x) {
634 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
635
636 /* Disable all ints for now */
637 pcc2[0x28] = 1;
638 pcc2[0x2a] = 0x48;
639 /* Following disables snooping. Snooping is not required
640 * as we make appropriate use of non-cached pages for
641 * shared data, and cache_push/cache_clear.
642 */
643 pcc2[0x2b] = 0x08;
644 }
645 #endif
646 #ifdef ENABLE_BVME6000_NET
647 if (MACH_IS_BVME6000) {
648 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
649
650 *ethirq = 1;
651 }
652 #endif
653
654 /* change the scp address */
655
656 MPU_PORT(dev, PORT_ALTSCP, (void *)virt_to_bus((void *)&lp->scp));
657
658 #elif defined(ENABLE_APRICOT)
659
660 {
661 u32 scp = virt_to_bus(&lp->scp);
662
663 /* change the scp address */
664 outw(0, ioaddr);
665 outw(0, ioaddr);
666 outb(4, ioaddr + 0xf);
667 outw(scp | 2, ioaddr);
668 outw(scp >> 16, ioaddr);
669 }
670 #endif
671
672 lp->last_cmd = jiffies;
673
674 #ifdef ENABLE_MVME16x_NET
675 if (MACH_IS_MVME16x)
676 lp->scp.sysbus = 0x00000054;
677 #endif
678 #ifdef ENABLE_BVME6000_NET
679 if (MACH_IS_BVME6000)
680 lp->scp.sysbus = 0x0000004c;
681 #endif
682 #ifdef ENABLE_APRICOT
683 if (MACH_IS_APRICOT)
684 lp->scp.sysbus = 0x00440000;
685 #endif
686
687 lp->scp.iscp = WSWAPiscp(virt_to_bus((void *)&lp->iscp));
688 lp->iscp.scb = WSWAPscb(virt_to_bus((void *)&lp->scb));
689 lp->iscp.stat = ISCP_BUSY;
690 lp->cmd_backlog = 0;
691
692 lp->cmd_head = lp->scb.cmd = I596_NULL;
693
694 #ifdef ENABLE_BVME6000_NET
695 if (MACH_IS_BVME6000) {
696 lp->scb.t_on = 7 * 25;
697 lp->scb.t_off = 1 * 25;
698 }
699 #endif
700
701 DEB(DEB_INIT,printk(KERN_DEBUG "%s: starting i82596.\n", dev->name));
702
703 #if defined(ENABLE_APRICOT)
704 (void) inb(ioaddr + 0x10);
705 outb(4, ioaddr + 0xf);
706 #endif
707 CA(dev);
708
709 if (wait_istat(dev,lp,1000,"initialization timed out"))
710 goto failed;
711 DEB(DEB_INIT,printk(KERN_DEBUG "%s: i82596 initialization successful\n", dev->name));
712
713 /* Ensure rx frame/buffer descriptors are tidy */
714 rebuild_rx_bufs(dev);
715 lp->scb.command = 0;
716
717 #ifdef ENABLE_MVME16x_NET
718 if (MACH_IS_MVME16x) {
719 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
720
721 /* Enable ints, etc. now */
722 pcc2[0x2a] = 0x55; /* Edge sensitive */
723 pcc2[0x2b] = 0x15;
724 }
725 #endif
726 #ifdef ENABLE_BVME6000_NET
727 if (MACH_IS_BVME6000) {
728 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
729
730 *ethirq = 3;
731 }
732 #endif
733
734
735 DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdConfigure\n", dev->name));
736 memcpy(lp->cf_cmd.i596_config, init_setup, 14);
737 lp->cf_cmd.cmd.command = CmdConfigure;
738 i596_add_cmd(dev, &lp->cf_cmd.cmd);
739
740 DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdSASetup\n", dev->name));
741 memcpy(lp->sa_cmd.eth_addr, dev->dev_addr, 6);
742 lp->sa_cmd.cmd.command = CmdSASetup;
743 i596_add_cmd(dev, &lp->sa_cmd.cmd);
744
745 DEB(DEB_INIT,printk(KERN_DEBUG "%s: queuing CmdTDR\n", dev->name));
746 lp->tdr_cmd.cmd.command = CmdTDR;
747 i596_add_cmd(dev, &lp->tdr_cmd.cmd);
748
749 spin_lock_irqsave (&lp->lock, flags);
750
751 if (wait_cmd(dev,lp,1000,"timed out waiting to issue RX_START")) {
752 spin_unlock_irqrestore (&lp->lock, flags);
753 goto failed;
754 }
755 DEB(DEB_INIT,printk(KERN_DEBUG "%s: Issuing RX_START\n", dev->name));
756 lp->scb.command = RX_START;
757 CA(dev);
758
759 spin_unlock_irqrestore (&lp->lock, flags);
760
761 if (wait_cmd(dev,lp,1000,"RX_START not processed"))
762 goto failed;
763 DEB(DEB_INIT,printk(KERN_DEBUG "%s: Receive unit started OK\n", dev->name));
764 return 0;
765
766 failed:
767 printk(KERN_CRIT "%s: Failed to initialise 82596\n", dev->name);
768 MPU_PORT(dev, PORT_RESET, NULL);
769 return -1;
770 }
771
772 static inline int i596_rx(struct net_device *dev)
773 {
774 struct i596_private *lp = dev->ml_priv;
775 struct i596_rfd *rfd;
776 struct i596_rbd *rbd;
777 int frames = 0;
778
779 DEB(DEB_RXFRAME,printk(KERN_DEBUG "i596_rx(), rfd_head %p, rbd_head %p\n",
780 lp->rfd_head, lp->rbd_head));
781
782 rfd = lp->rfd_head; /* Ref next frame to check */
783
784 while ((rfd->stat) & STAT_C) { /* Loop while complete frames */
785 if (rfd->rbd == I596_NULL)
786 rbd = I596_NULL;
787 else if (rfd->rbd == lp->rbd_head->b_addr)
788 rbd = lp->rbd_head;
789 else {
790 printk(KERN_CRIT "%s: rbd chain broken!\n", dev->name);
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 /* a good frame */
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 /* Check if the packet is long enough to just accept
806 * without copying to a properly sized skbuff.
807 */
808
809 if (pkt_len > rx_copybreak) {
810 struct sk_buff *newskb;
811
812 /* Get fresh skbuff to replace filled one. */
813 newskb = dev_alloc_skb(PKT_BUF_SZ);
814 if (newskb == NULL) {
815 skb = NULL; /* drop pkt */
816 goto memory_squeeze;
817 }
818 /* Pass up the skb already on the Rx ring. */
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);
831 memory_squeeze:
832 if (skb == NULL) {
833 printk(KERN_WARNING "%s: i596_rx Memory squeeze, dropping packet.\n", dev->name);
834 dev->stats.rx_dropped++;
835 }
836 else {
837 if (!rx_in_place) {
838 /* 16 byte align the data fields */
839 skb_reserve(skb, 2);
840 memcpy(skb_put(skb,pkt_len), rbd->v_data, pkt_len);
841 }
842 skb->protocol=eth_type_trans(skb,dev);
843 skb->len = pkt_len;
844 #ifdef __mc68000__
845 cache_clear(virt_to_phys(rbd->skb->data),
846 pkt_len);
847 #endif
848 netif_rx(skb);
849 dev->stats.rx_packets++;
850 dev->stats.rx_bytes+=pkt_len;
851 }
852 }
853 else {
854 DEB(DEB_ERRORS, printk(KERN_DEBUG "%s: Error, rfd.stat = 0x%04x\n",
855 dev->name, rfd->stat));
856 dev->stats.rx_errors++;
857 if ((rfd->stat) & 0x0001)
858 dev->stats.collisions++;
859 if ((rfd->stat) & 0x0080)
860 dev->stats.rx_length_errors++;
861 if ((rfd->stat) & 0x0100)
862 dev->stats.rx_over_errors++;
863 if ((rfd->stat) & 0x0200)
864 dev->stats.rx_fifo_errors++;
865 if ((rfd->stat) & 0x0400)
866 dev->stats.rx_frame_errors++;
867 if ((rfd->stat) & 0x0800)
868 dev->stats.rx_crc_errors++;
869 if ((rfd->stat) & 0x1000)
870 dev->stats.rx_length_errors++;
871 }
872
873 /* Clear the buffer descriptor count and EOF + F flags */
874
875 if (rbd != I596_NULL && (rbd->count & 0x4000)) {
876 rbd->count = 0;
877 lp->rbd_head = rbd->v_next;
878 }
879
880 /* Tidy the frame descriptor, marking it as end of list */
881
882 rfd->rbd = I596_NULL;
883 rfd->stat = 0;
884 rfd->cmd = CMD_EOL|CMD_FLEX;
885 rfd->count = 0;
886
887 /* Remove end-of-list from old end descriptor */
888
889 rfd->v_prev->cmd = CMD_FLEX;
890
891 /* Update record of next frame descriptor to process */
892
893 lp->scb.rfd = rfd->b_next;
894 lp->rfd_head = rfd->v_next;
895 rfd = lp->rfd_head;
896 }
897
898 DEB(DEB_RXFRAME,printk(KERN_DEBUG "frames %d\n", frames));
899
900 return 0;
901 }
902
903
904 static void i596_cleanup_cmd(struct net_device *dev, struct i596_private *lp)
905 {
906 struct i596_cmd *ptr;
907
908 while (lp->cmd_head != I596_NULL) {
909 ptr = lp->cmd_head;
910 lp->cmd_head = ptr->v_next;
911 lp->cmd_backlog--;
912
913 switch ((ptr->command) & 0x7) {
914 case CmdTx:
915 {
916 struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
917 struct sk_buff *skb = tx_cmd->skb;
918
919 dev_kfree_skb(skb);
920
921 dev->stats.tx_errors++;
922 dev->stats.tx_aborted_errors++;
923
924 ptr->v_next = ptr->b_next = I596_NULL;
925 tx_cmd->cmd.command = 0; /* Mark as free */
926 break;
927 }
928 default:
929 ptr->v_next = ptr->b_next = I596_NULL;
930 }
931 }
932
933 wait_cmd(dev,lp,100,"i596_cleanup_cmd timed out");
934 lp->scb.cmd = I596_NULL;
935 }
936
937 static void i596_reset(struct net_device *dev, struct i596_private *lp,
938 int ioaddr)
939 {
940 unsigned long flags;
941
942 DEB(DEB_RESET,printk(KERN_DEBUG "i596_reset\n"));
943
944 spin_lock_irqsave (&lp->lock, flags);
945
946 wait_cmd(dev,lp,100,"i596_reset timed out");
947
948 netif_stop_queue(dev);
949
950 lp->scb.command = CUC_ABORT | RX_ABORT;
951 CA(dev);
952
953 /* wait for shutdown */
954 wait_cmd(dev,lp,1000,"i596_reset 2 timed out");
955 spin_unlock_irqrestore (&lp->lock, flags);
956
957 i596_cleanup_cmd(dev,lp);
958 i596_rx(dev);
959
960 netif_start_queue(dev);
961 init_i596_mem(dev);
962 }
963
964 static void i596_add_cmd(struct net_device *dev, struct i596_cmd *cmd)
965 {
966 struct i596_private *lp = dev->ml_priv;
967 int ioaddr = dev->base_addr;
968 unsigned long flags;
969
970 DEB(DEB_ADDCMD,printk(KERN_DEBUG "i596_add_cmd\n"));
971
972 cmd->status = 0;
973 cmd->command |= (CMD_EOL | CMD_INTR);
974 cmd->v_next = cmd->b_next = I596_NULL;
975
976 spin_lock_irqsave (&lp->lock, flags);
977
978 if (lp->cmd_head != I596_NULL) {
979 lp->cmd_tail->v_next = cmd;
980 lp->cmd_tail->b_next = WSWAPcmd(virt_to_bus(&cmd->status));
981 } else {
982 lp->cmd_head = cmd;
983 wait_cmd(dev,lp,100,"i596_add_cmd timed out");
984 lp->scb.cmd = WSWAPcmd(virt_to_bus(&cmd->status));
985 lp->scb.command = CUC_START;
986 CA(dev);
987 }
988 lp->cmd_tail = cmd;
989 lp->cmd_backlog++;
990
991 spin_unlock_irqrestore (&lp->lock, flags);
992
993 if (lp->cmd_backlog > max_cmd_backlog) {
994 unsigned long tickssofar = jiffies - lp->last_cmd;
995
996 if (tickssofar < ticks_limit)
997 return;
998
999 printk(KERN_NOTICE "%s: command unit timed out, status resetting.\n", dev->name);
1000
1001 i596_reset(dev, lp, ioaddr);
1002 }
1003 }
1004
1005 static int i596_open(struct net_device *dev)
1006 {
1007 int res = 0;
1008
1009 DEB(DEB_OPEN,printk(KERN_DEBUG "%s: i596_open() irq %d.\n", dev->name, dev->irq));
1010
1011 if (request_irq(dev->irq, i596_interrupt, 0, "i82596", dev)) {
1012 printk(KERN_ERR "%s: IRQ %d not free\n", dev->name, dev->irq);
1013 return -EAGAIN;
1014 }
1015 #ifdef ENABLE_MVME16x_NET
1016 if (MACH_IS_MVME16x) {
1017 if (request_irq(0x56, i596_error, 0, "i82596_error", dev)) {
1018 res = -EAGAIN;
1019 goto err_irq_dev;
1020 }
1021 }
1022 #endif
1023 res = init_rx_bufs(dev);
1024 if (res)
1025 goto err_irq_56;
1026
1027 netif_start_queue(dev);
1028
1029 if (init_i596_mem(dev)) {
1030 res = -EAGAIN;
1031 goto err_queue;
1032 }
1033
1034 return 0;
1035
1036 err_queue:
1037 netif_stop_queue(dev);
1038 remove_rx_bufs(dev);
1039 err_irq_56:
1040 #ifdef ENABLE_MVME16x_NET
1041 free_irq(0x56, dev);
1042 err_irq_dev:
1043 #endif
1044 free_irq(dev->irq, dev);
1045
1046 return res;
1047 }
1048
1049 static void i596_tx_timeout (struct net_device *dev)
1050 {
1051 struct i596_private *lp = dev->ml_priv;
1052 int ioaddr = dev->base_addr;
1053
1054 /* Transmitter timeout, serious problems. */
1055 DEB(DEB_ERRORS,printk(KERN_ERR "%s: transmit timed out, status resetting.\n",
1056 dev->name));
1057
1058 dev->stats.tx_errors++;
1059
1060 /* Try to restart the adaptor */
1061 if (lp->last_restart == dev->stats.tx_packets) {
1062 DEB(DEB_ERRORS,printk(KERN_ERR "Resetting board.\n"));
1063 /* Shutdown and restart */
1064 i596_reset (dev, lp, ioaddr);
1065 } else {
1066 /* Issue a channel attention signal */
1067 DEB(DEB_ERRORS,printk(KERN_ERR "Kicking board.\n"));
1068 lp->scb.command = CUC_START | RX_START;
1069 CA (dev);
1070 lp->last_restart = dev->stats.tx_packets;
1071 }
1072
1073 dev->trans_start = jiffies; /* prevent tx timeout */
1074 netif_wake_queue (dev);
1075 }
1076
1077 static netdev_tx_t i596_start_xmit(struct sk_buff *skb, struct net_device *dev)
1078 {
1079 struct i596_private *lp = dev->ml_priv;
1080 struct tx_cmd *tx_cmd;
1081 struct i596_tbd *tbd;
1082 short length = skb->len;
1083
1084 DEB(DEB_STARTTX,printk(KERN_DEBUG "%s: i596_start_xmit(%x,%p) called\n",
1085 dev->name, skb->len, skb->data));
1086
1087 if (skb->len < ETH_ZLEN) {
1088 if (skb_padto(skb, ETH_ZLEN))
1089 return NETDEV_TX_OK;
1090 length = ETH_ZLEN;
1091 }
1092 netif_stop_queue(dev);
1093
1094 tx_cmd = lp->tx_cmds + lp->next_tx_cmd;
1095 tbd = lp->tbds + lp->next_tx_cmd;
1096
1097 if (tx_cmd->cmd.command) {
1098 printk(KERN_NOTICE "%s: xmit ring full, dropping packet.\n",
1099 dev->name);
1100 dev->stats.tx_dropped++;
1101
1102 dev_kfree_skb(skb);
1103 } else {
1104 if (++lp->next_tx_cmd == TX_RING_SIZE)
1105 lp->next_tx_cmd = 0;
1106 tx_cmd->tbd = WSWAPtbd(virt_to_bus(tbd));
1107 tbd->next = I596_NULL;
1108
1109 tx_cmd->cmd.command = CMD_FLEX | CmdTx;
1110 tx_cmd->skb = skb;
1111
1112 tx_cmd->pad = 0;
1113 tx_cmd->size = 0;
1114 tbd->pad = 0;
1115 tbd->size = EOF | length;
1116
1117 tbd->data = WSWAPchar(virt_to_bus(skb->data));
1118
1119 #ifdef __mc68000__
1120 cache_push(virt_to_phys(skb->data), length);
1121 #endif
1122 DEB(DEB_TXADDR,print_eth(skb->data, "tx-queued"));
1123 i596_add_cmd(dev, &tx_cmd->cmd);
1124
1125 dev->stats.tx_packets++;
1126 dev->stats.tx_bytes += length;
1127 }
1128
1129 netif_start_queue(dev);
1130
1131 return NETDEV_TX_OK;
1132 }
1133
1134 static void print_eth(unsigned char *add, char *str)
1135 {
1136 printk(KERN_DEBUG "i596 0x%p, %pM --> %pM %02X%02X, %s\n",
1137 add, add + 6, add, add[12], add[13], str);
1138 }
1139
1140 static int io = 0x300;
1141 static int irq = 10;
1142
1143 static const struct net_device_ops i596_netdev_ops = {
1144 .ndo_open = i596_open,
1145 .ndo_stop = i596_close,
1146 .ndo_start_xmit = i596_start_xmit,
1147 .ndo_set_multicast_list = set_multicast_list,
1148 .ndo_tx_timeout = i596_tx_timeout,
1149 .ndo_change_mtu = eth_change_mtu,
1150 .ndo_set_mac_address = eth_mac_addr,
1151 .ndo_validate_addr = eth_validate_addr,
1152 };
1153
1154 struct net_device * __init i82596_probe(int unit)
1155 {
1156 struct net_device *dev;
1157 int i;
1158 struct i596_private *lp;
1159 char eth_addr[8];
1160 static int probed;
1161 int err;
1162
1163 if (probed)
1164 return ERR_PTR(-ENODEV);
1165 probed++;
1166
1167 dev = alloc_etherdev(0);
1168 if (!dev)
1169 return ERR_PTR(-ENOMEM);
1170
1171 if (unit >= 0) {
1172 sprintf(dev->name, "eth%d", unit);
1173 netdev_boot_setup_check(dev);
1174 } else {
1175 dev->base_addr = io;
1176 dev->irq = irq;
1177 }
1178
1179 #ifdef ENABLE_MVME16x_NET
1180 if (MACH_IS_MVME16x) {
1181 if (mvme16x_config & MVME16x_CONFIG_NO_ETHERNET) {
1182 printk(KERN_NOTICE "Ethernet probe disabled - chip not present\n");
1183 err = -ENODEV;
1184 goto out;
1185 }
1186 memcpy(eth_addr, (void *) 0xfffc1f2c, 6); /* YUCK! Get addr from NOVRAM */
1187 dev->base_addr = MVME_I596_BASE;
1188 dev->irq = (unsigned) MVME16x_IRQ_I596;
1189 goto found;
1190 }
1191 #endif
1192 #ifdef ENABLE_BVME6000_NET
1193 if (MACH_IS_BVME6000) {
1194 volatile unsigned char *rtc = (unsigned char *) BVME_RTC_BASE;
1195 unsigned char msr = rtc[3];
1196 int i;
1197
1198 rtc[3] |= 0x80;
1199 for (i = 0; i < 6; i++)
1200 eth_addr[i] = rtc[i * 4 + 7]; /* Stored in RTC RAM at offset 1 */
1201 rtc[3] = msr;
1202 dev->base_addr = BVME_I596_BASE;
1203 dev->irq = (unsigned) BVME_IRQ_I596;
1204 goto found;
1205 }
1206 #endif
1207 #ifdef ENABLE_APRICOT
1208 {
1209 int checksum = 0;
1210 int ioaddr = 0x300;
1211
1212 /* this is easy the ethernet interface can only be at 0x300 */
1213 /* first check nothing is already registered here */
1214
1215 if (!request_region(ioaddr, I596_TOTAL_SIZE, DRV_NAME)) {
1216 printk(KERN_ERR "82596: IO address 0x%04x in use\n", ioaddr);
1217 err = -EBUSY;
1218 goto out;
1219 }
1220
1221 dev->base_addr = ioaddr;
1222
1223 for (i = 0; i < 8; i++) {
1224 eth_addr[i] = inb(ioaddr + 8 + i);
1225 checksum += eth_addr[i];
1226 }
1227
1228 /* checksum is a multiple of 0x100, got this wrong first time
1229 some machines have 0x100, some 0x200. The DOS driver doesn't
1230 even bother with the checksum.
1231 Some other boards trip the checksum.. but then appear as
1232 ether address 0. Trap these - AC */
1233
1234 if ((checksum % 0x100) ||
1235 (memcmp(eth_addr, "\x00\x00\x49", 3) != 0)) {
1236 err = -ENODEV;
1237 goto out1;
1238 }
1239
1240 dev->irq = 10;
1241 goto found;
1242 }
1243 #endif
1244 err = -ENODEV;
1245 goto out;
1246
1247 found:
1248 dev->mem_start = (int)__get_free_pages(GFP_ATOMIC, 0);
1249 if (!dev->mem_start) {
1250 err = -ENOMEM;
1251 goto out1;
1252 }
1253
1254 DEB(DEB_PROBE,printk(KERN_INFO "%s: 82596 at %#3lx,", dev->name, dev->base_addr));
1255
1256 for (i = 0; i < 6; i++)
1257 DEB(DEB_PROBE,printk(" %2.2X", dev->dev_addr[i] = eth_addr[i]));
1258
1259 DEB(DEB_PROBE,printk(" IRQ %d.\n", dev->irq));
1260
1261 DEB(DEB_PROBE,printk(KERN_INFO "%s", version));
1262
1263 /* The 82596-specific entries in the device structure. */
1264 dev->netdev_ops = &i596_netdev_ops;
1265 dev->watchdog_timeo = TX_TIMEOUT;
1266
1267 dev->ml_priv = (void *)(dev->mem_start);
1268
1269 lp = dev->ml_priv;
1270 DEB(DEB_INIT,printk(KERN_DEBUG "%s: lp at 0x%08lx (%zd bytes), "
1271 "lp->scb at 0x%08lx\n",
1272 dev->name, (unsigned long)lp,
1273 sizeof(struct i596_private), (unsigned long)&lp->scb));
1274 memset((void *) lp, 0, sizeof(struct i596_private));
1275
1276 #ifdef __mc68000__
1277 cache_push(virt_to_phys((void *)(dev->mem_start)), 4096);
1278 cache_clear(virt_to_phys((void *)(dev->mem_start)), 4096);
1279 kernel_set_cachemode((void *)(dev->mem_start), 4096, IOMAP_NOCACHE_SER);
1280 #endif
1281 lp->scb.command = 0;
1282 lp->scb.cmd = I596_NULL;
1283 lp->scb.rfd = I596_NULL;
1284 spin_lock_init(&lp->lock);
1285
1286 err = register_netdev(dev);
1287 if (err)
1288 goto out2;
1289 return dev;
1290 out2:
1291 #ifdef __mc68000__
1292 kernel_set_cachemode((void *)(dev->mem_start), 4096,
1293 IOMAP_FULL_CACHING);
1294 #endif
1295 free_page ((u32)(dev->mem_start));
1296 out1:
1297 #ifdef ENABLE_APRICOT
1298 release_region(dev->base_addr, I596_TOTAL_SIZE);
1299 #endif
1300 out:
1301 free_netdev(dev);
1302 return ERR_PTR(err);
1303 }
1304
1305 static irqreturn_t i596_interrupt(int irq, void *dev_id)
1306 {
1307 struct net_device *dev = dev_id;
1308 struct i596_private *lp;
1309 short ioaddr;
1310 unsigned short status, ack_cmd = 0;
1311 int handled = 0;
1312
1313 #ifdef ENABLE_BVME6000_NET
1314 if (MACH_IS_BVME6000) {
1315 if (*(char *) BVME_LOCAL_IRQ_STAT & BVME_ETHERR) {
1316 i596_error(irq, dev_id);
1317 return IRQ_HANDLED;
1318 }
1319 }
1320 #endif
1321 if (dev == NULL) {
1322 printk(KERN_ERR "i596_interrupt(): irq %d for unknown device.\n", irq);
1323 return IRQ_NONE;
1324 }
1325
1326 ioaddr = dev->base_addr;
1327 lp = dev->ml_priv;
1328
1329 spin_lock (&lp->lock);
1330
1331 wait_cmd(dev,lp,100,"i596 interrupt, timeout");
1332 status = lp->scb.status;
1333
1334 DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt, IRQ %d, status %4.4x.\n",
1335 dev->name, irq, status));
1336
1337 ack_cmd = status & 0xf000;
1338
1339 if ((status & 0x8000) || (status & 0x2000)) {
1340 struct i596_cmd *ptr;
1341
1342 handled = 1;
1343 if ((status & 0x8000))
1344 DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt completed command.\n", dev->name));
1345 if ((status & 0x2000))
1346 DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt command unit inactive %x.\n", dev->name, status & 0x0700));
1347
1348 while ((lp->cmd_head != I596_NULL) && (lp->cmd_head->status & STAT_C)) {
1349 ptr = lp->cmd_head;
1350
1351 DEB(DEB_STATUS,printk(KERN_DEBUG "cmd_head->status = %04x, ->command = %04x\n",
1352 lp->cmd_head->status, lp->cmd_head->command));
1353 lp->cmd_head = ptr->v_next;
1354 lp->cmd_backlog--;
1355
1356 switch ((ptr->command) & 0x7) {
1357 case CmdTx:
1358 {
1359 struct tx_cmd *tx_cmd = (struct tx_cmd *) ptr;
1360 struct sk_buff *skb = tx_cmd->skb;
1361
1362 if ((ptr->status) & STAT_OK) {
1363 DEB(DEB_TXADDR,print_eth(skb->data, "tx-done"));
1364 } else {
1365 dev->stats.tx_errors++;
1366 if ((ptr->status) & 0x0020)
1367 dev->stats.collisions++;
1368 if (!((ptr->status) & 0x0040))
1369 dev->stats.tx_heartbeat_errors++;
1370 if ((ptr->status) & 0x0400)
1371 dev->stats.tx_carrier_errors++;
1372 if ((ptr->status) & 0x0800)
1373 dev->stats.collisions++;
1374 if ((ptr->status) & 0x1000)
1375 dev->stats.tx_aborted_errors++;
1376 }
1377
1378 dev_kfree_skb_irq(skb);
1379
1380 tx_cmd->cmd.command = 0; /* Mark free */
1381 break;
1382 }
1383 case CmdTDR:
1384 {
1385 unsigned short status = ((struct tdr_cmd *)ptr)->status;
1386
1387 if (status & 0x8000) {
1388 DEB(DEB_TDR,printk(KERN_INFO "%s: link ok.\n", dev->name));
1389 } else {
1390 if (status & 0x4000)
1391 printk(KERN_ERR "%s: Transceiver problem.\n", dev->name);
1392 if (status & 0x2000)
1393 printk(KERN_ERR "%s: Termination problem.\n", dev->name);
1394 if (status & 0x1000)
1395 printk(KERN_ERR "%s: Short circuit.\n", dev->name);
1396
1397 DEB(DEB_TDR,printk(KERN_INFO "%s: Time %d.\n", dev->name, status & 0x07ff));
1398 }
1399 break;
1400 }
1401 case CmdConfigure:
1402 case CmdMulticastList:
1403 /* Zap command so set_multicast_list() knows it is free */
1404 ptr->command = 0;
1405 break;
1406 }
1407 ptr->v_next = ptr->b_next = I596_NULL;
1408 lp->last_cmd = jiffies;
1409 }
1410
1411 ptr = lp->cmd_head;
1412 while ((ptr != I596_NULL) && (ptr != lp->cmd_tail)) {
1413 ptr->command &= 0x1fff;
1414 ptr = ptr->v_next;
1415 }
1416
1417 if ((lp->cmd_head != I596_NULL))
1418 ack_cmd |= CUC_START;
1419 lp->scb.cmd = WSWAPcmd(virt_to_bus(&lp->cmd_head->status));
1420 }
1421 if ((status & 0x1000) || (status & 0x4000)) {
1422 if ((status & 0x4000))
1423 DEB(DEB_INTS,printk(KERN_DEBUG "%s: i596 interrupt received a frame.\n", dev->name));
1424 i596_rx(dev);
1425 /* Only RX_START if stopped - RGH 07-07-96 */
1426 if (status & 0x1000) {
1427 if (netif_running(dev)) {
1428 DEB(DEB_ERRORS,printk(KERN_ERR "%s: i596 interrupt receive unit inactive, status 0x%x\n", dev->name, status));
1429 ack_cmd |= RX_START;
1430 dev->stats.rx_errors++;
1431 dev->stats.rx_fifo_errors++;
1432 rebuild_rx_bufs(dev);
1433 }
1434 }
1435 }
1436 wait_cmd(dev,lp,100,"i596 interrupt, timeout");
1437 lp->scb.command = ack_cmd;
1438
1439 #ifdef ENABLE_MVME16x_NET
1440 if (MACH_IS_MVME16x) {
1441 /* Ack the interrupt */
1442
1443 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
1444
1445 pcc2[0x2a] |= 0x08;
1446 }
1447 #endif
1448 #ifdef ENABLE_BVME6000_NET
1449 if (MACH_IS_BVME6000) {
1450 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
1451
1452 *ethirq = 1;
1453 *ethirq = 3;
1454 }
1455 #endif
1456 #ifdef ENABLE_APRICOT
1457 (void) inb(ioaddr + 0x10);
1458 outb(4, ioaddr + 0xf);
1459 #endif
1460 CA(dev);
1461
1462 DEB(DEB_INTS,printk(KERN_DEBUG "%s: exiting interrupt.\n", dev->name));
1463
1464 spin_unlock (&lp->lock);
1465 return IRQ_RETVAL(handled);
1466 }
1467
1468 static int i596_close(struct net_device *dev)
1469 {
1470 struct i596_private *lp = dev->ml_priv;
1471 unsigned long flags;
1472
1473 netif_stop_queue(dev);
1474
1475 DEB(DEB_INIT,printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x.\n",
1476 dev->name, lp->scb.status));
1477
1478 spin_lock_irqsave(&lp->lock, flags);
1479
1480 wait_cmd(dev,lp,100,"close1 timed out");
1481 lp->scb.command = CUC_ABORT | RX_ABORT;
1482 CA(dev);
1483
1484 wait_cmd(dev,lp,100,"close2 timed out");
1485
1486 spin_unlock_irqrestore(&lp->lock, flags);
1487 DEB(DEB_STRUCT,i596_display_data(dev));
1488 i596_cleanup_cmd(dev,lp);
1489
1490 #ifdef ENABLE_MVME16x_NET
1491 if (MACH_IS_MVME16x) {
1492 volatile unsigned char *pcc2 = (unsigned char *) 0xfff42000;
1493
1494 /* Disable all ints */
1495 pcc2[0x28] = 1;
1496 pcc2[0x2a] = 0x40;
1497 pcc2[0x2b] = 0x40; /* Set snooping bits now! */
1498 }
1499 #endif
1500 #ifdef ENABLE_BVME6000_NET
1501 if (MACH_IS_BVME6000) {
1502 volatile unsigned char *ethirq = (unsigned char *) BVME_ETHIRQ_REG;
1503
1504 *ethirq = 1;
1505 }
1506 #endif
1507
1508 #ifdef ENABLE_MVME16x_NET
1509 free_irq(0x56, dev);
1510 #endif
1511 free_irq(dev->irq, dev);
1512 remove_rx_bufs(dev);
1513
1514 return 0;
1515 }
1516
1517 /*
1518 * Set or clear the multicast filter for this adaptor.
1519 */
1520
1521 static void set_multicast_list(struct net_device *dev)
1522 {
1523 struct i596_private *lp = dev->ml_priv;
1524 int config = 0, cnt;
1525
1526 DEB(DEB_MULTI,printk(KERN_DEBUG "%s: set multicast list, %d entries, promisc %s, allmulti %s\n",
1527 dev->name, netdev_mc_count(dev),
1528 dev->flags & IFF_PROMISC ? "ON" : "OFF",
1529 dev->flags & IFF_ALLMULTI ? "ON" : "OFF"));
1530
1531 if (wait_cfg(dev, &lp->cf_cmd.cmd, 1000, "config change request timed out"))
1532 return;
1533
1534 if ((dev->flags & IFF_PROMISC) && !(lp->cf_cmd.i596_config[8] & 0x01)) {
1535 lp->cf_cmd.i596_config[8] |= 0x01;
1536 config = 1;
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_ALLMULTI) && (lp->cf_cmd.i596_config[11] & 0x20)) {
1543 lp->cf_cmd.i596_config[11] &= ~0x20;
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 (config) {
1551 lp->cf_cmd.cmd.command = CmdConfigure;
1552 i596_add_cmd(dev, &lp->cf_cmd.cmd);
1553 }
1554
1555 cnt = netdev_mc_count(dev);
1556 if (cnt > MAX_MC_CNT)
1557 {
1558 cnt = MAX_MC_CNT;
1559 printk(KERN_ERR "%s: Only %d multicast addresses supported",
1560 dev->name, cnt);
1561 }
1562
1563 if (!netdev_mc_empty(dev)) {
1564 struct netdev_hw_addr *ha;
1565 unsigned char *cp;
1566 struct mc_cmd *cmd;
1567
1568 if (wait_cfg(dev, &lp->mc_cmd.cmd, 1000, "multicast list change request timed out"))
1569 return;
1570 cmd = &lp->mc_cmd;
1571 cmd->cmd.command = CmdMulticastList;
1572 cmd->mc_cnt = cnt * ETH_ALEN;
1573 cp = cmd->mc_addrs;
1574 netdev_for_each_mc_addr(ha, dev) {
1575 if (!cnt--)
1576 break;
1577 memcpy(cp, ha->addr, ETH_ALEN);
1578 if (i596_debug > 1)
1579 DEB(DEB_MULTI,printk(KERN_INFO "%s: Adding address %pM\n",
1580 dev->name, cp));
1581 cp += ETH_ALEN;
1582 }
1583 i596_add_cmd(dev, &cmd->cmd);
1584 }
1585 }
1586
1587 #ifdef MODULE
1588 static struct net_device *dev_82596;
1589
1590 #ifdef ENABLE_APRICOT
1591 module_param(irq, int, 0);
1592 MODULE_PARM_DESC(irq, "Apricot IRQ number");
1593 #endif
1594
1595 static int debug = -1;
1596 module_param(debug, int, 0);
1597 MODULE_PARM_DESC(debug, "i82596 debug mask");
1598
1599 int __init init_module(void)
1600 {
1601 if (debug >= 0)
1602 i596_debug = debug;
1603 dev_82596 = i82596_probe(-1);
1604 if (IS_ERR(dev_82596))
1605 return PTR_ERR(dev_82596);
1606 return 0;
1607 }
1608
1609 void __exit cleanup_module(void)
1610 {
1611 unregister_netdev(dev_82596);
1612 #ifdef __mc68000__
1613
1614 kernel_set_cachemode((void *)(dev_82596->mem_start), 4096,
1615 IOMAP_FULL_CACHING);
1616 #endif
1617 free_page ((u32)(dev_82596->mem_start));
1618 #ifdef ENABLE_APRICOT
1619 /* If we don't do this, we can't re-insmod it later. */
1620 release_region(dev_82596->base_addr, I596_TOTAL_SIZE);
1621 #endif
1622 free_netdev(dev_82596);
1623 }
1624
1625 #endif /* MODULE */
Tomato firmware and modifications.