?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
dt-bindings: mtd: ingenic: Use standard ecc-engine property
[linux/fpc-iii.git] / drivers / net / ethernet / seeq / ether3.c
blobd1bb73bf99148b2cd29aff4e8c2f943369b0ab4c
1 /*
2 * linux/drivers/acorn/net/ether3.c
3 *
4 * Copyright (C) 1995-2000 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * SEEQ nq8005 ethernet driver for Acorn/ANT Ether3 card
11 * for Acorn machines
12 *
13 * By Russell King, with some suggestions from borris@ant.co.uk
14 *
15 * Changelog:
16 * 1.04 RMK 29/02/1996 Won't pass packets that are from our ethernet
17 * address up to the higher levels - they're
18 * silently ignored. I/F can now be put into
19 * multicast mode. Receiver routine optimised.
20 * 1.05 RMK 30/02/1996 Now claims interrupt at open when part of
21 * the kernel rather than when a module.
22 * 1.06 RMK 02/03/1996 Various code cleanups
23 * 1.07 RMK 13/10/1996 Optimised interrupt routine and transmit
24 * routines.
25 * 1.08 RMK 14/10/1996 Fixed problem with too many packets,
26 * prevented the kernel message about dropped
27 * packets appearing too many times a second.
28 * Now does not disable all IRQs, only the IRQ
29 * used by this card.
30 * 1.09 RMK 10/11/1996 Only enables TX irq when buffer space is low,
31 * but we still service the TX queue if we get a
32 * RX interrupt.
33 * 1.10 RMK 15/07/1997 Fixed autoprobing of NQ8004.
34 * 1.11 RMK 16/11/1997 Fixed autoprobing of NQ8005A.
35 * 1.12 RMK 31/12/1997 Removed reference to dev_tint for Linux 2.1.
36 * RMK 27/06/1998 Changed asm/delay.h to linux/delay.h.
37 * 1.13 RMK 29/06/1998 Fixed problem with transmission of packets.
38 * Chip seems to have a bug in, whereby if the
39 * packet starts two bytes from the end of the
40 * buffer, it corrupts the receiver chain, and
41 * never updates the transmit status correctly.
42 * 1.14 RMK 07/01/1998 Added initial code for ETHERB addressing.
43 * 1.15 RMK 30/04/1999 More fixes to the transmit routine for buggy
44 * hardware.
45 * 1.16 RMK 10/02/2000 Updated for 2.3.43
46 * 1.17 RMK 13/05/2000 Updated for 2.3.99-pre8
47 */
48
49 #include <linux/module.h>
50 #include <linux/kernel.h>
51 #include <linux/types.h>
52 #include <linux/fcntl.h>
53 #include <linux/interrupt.h>
54 #include <linux/ioport.h>
55 #include <linux/in.h>
56 #include <linux/slab.h>
57 #include <linux/string.h>
58 #include <linux/errno.h>
59 #include <linux/netdevice.h>
60 #include <linux/etherdevice.h>
61 #include <linux/skbuff.h>
62 #include <linux/device.h>
63 #include <linux/init.h>
64 #include <linux/delay.h>
65 #include <linux/bitops.h>
66
67 #include <asm/ecard.h>
68 #include <asm/io.h>
69
70 static char version[] = "ether3 ethernet driver (c) 1995-2000 R.M.King v1.17\n";
71
72 #include "ether3.h"
73
74 static unsigned int net_debug = NET_DEBUG;
75
76 static void ether3_setmulticastlist(struct net_device *dev);
77 static int ether3_rx(struct net_device *dev, unsigned int maxcnt);
78 static void ether3_tx(struct net_device *dev);
79 static int ether3_open (struct net_device *dev);
80 static netdev_tx_t ether3_sendpacket(struct sk_buff *skb,
81 struct net_device *dev);
82 static irqreturn_t ether3_interrupt (int irq, void *dev_id);
83 static int ether3_close (struct net_device *dev);
84 static void ether3_setmulticastlist (struct net_device *dev);
85 static void ether3_timeout(struct net_device *dev);
86
87 #define BUS_16 2
88 #define BUS_8 1
89 #define BUS_UNKNOWN 0
90
91 /* --------------------------------------------------------------------------- */
92
93 typedef enum {
94 buffer_write,
95 buffer_read
96 } buffer_rw_t;
97
98 /*
99 * ether3 read/write. Slow things down a bit...
100 * The SEEQ8005 doesn't like us writing to its registers
101 * too quickly.
102 */
103 static inline void ether3_outb(int v, void __iomem *r)
104 {
105 writeb(v, r);
106 udelay(1);
107 }
108
109 static inline void ether3_outw(int v, void __iomem *r)
110 {
111 writew(v, r);
112 udelay(1);
113 }
114 #define ether3_inb(r) ({ unsigned int __v = readb((r)); udelay(1); __v; })
115 #define ether3_inw(r) ({ unsigned int __v = readw((r)); udelay(1); __v; })
116
117 static int
118 ether3_setbuffer(struct net_device *dev, buffer_rw_t read, int start)
119 {
120 int timeout = 1000;
121
122 ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
123 ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND);
124
125 while ((ether3_inw(REG_STATUS) & STAT_FIFOEMPTY) == 0) {
126 if (!timeout--) {
127 printk("%s: setbuffer broken\n", dev->name);
128 priv(dev)->broken = 1;
129 return 1;
130 }
131 udelay(1);
132 }
133
134 if (read == buffer_read) {
135 ether3_outw(start, REG_DMAADDR);
136 ether3_outw(priv(dev)->regs.command | CMD_FIFOREAD, REG_COMMAND);
137 } else {
138 ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND);
139 ether3_outw(start, REG_DMAADDR);
140 }
141 return 0;
142 }
143
144 /*
145 * write data to the buffer memory
146 */
147 #define ether3_writebuffer(dev,data,length) \
148 writesw(REG_BUFWIN, (data), (length) >> 1)
149
150 #define ether3_writeword(dev,data) \
151 writew((data), REG_BUFWIN)
152
153 #define ether3_writelong(dev,data) { \
154 void __iomem *reg_bufwin = REG_BUFWIN; \
155 writew((data), reg_bufwin); \
156 writew((data) >> 16, reg_bufwin); \
157 }
158
159 /*
160 * read data from the buffer memory
161 */
162 #define ether3_readbuffer(dev,data,length) \
163 readsw(REG_BUFWIN, (data), (length) >> 1)
164
165 #define ether3_readword(dev) \
166 readw(REG_BUFWIN)
167
168 #define ether3_readlong(dev) \
169 readw(REG_BUFWIN) | (readw(REG_BUFWIN) << 16)
170
171 /*
172 * Switch LED off...
173 */
174 static void ether3_ledoff(struct timer_list *t)
175 {
176 struct dev_priv *private = from_timer(private, t, timer);
177 struct net_device *dev = private->dev;
178
179 ether3_outw(priv(dev)->regs.config2 |= CFG2_CTRLO, REG_CONFIG2);
180 }
181
182 /*
183 * switch LED on...
184 */
185 static inline void ether3_ledon(struct net_device *dev)
186 {
187 del_timer(&priv(dev)->timer);
188 priv(dev)->timer.expires = jiffies + HZ / 50; /* leave on for 1/50th second */
189 add_timer(&priv(dev)->timer);
190 if (priv(dev)->regs.config2 & CFG2_CTRLO)
191 ether3_outw(priv(dev)->regs.config2 &= ~CFG2_CTRLO, REG_CONFIG2);
192 }
193
194 /*
195 * Read the ethernet address string from the on board rom.
196 * This is an ascii string!!!
197 */
198 static int
199 ether3_addr(char *addr, struct expansion_card *ec)
200 {
201 struct in_chunk_dir cd;
202 char *s;
203
204 if (ecard_readchunk(&cd, ec, 0xf5, 0) && (s = strchr(cd.d.string, '('))) {
205 int i;
206 for (i = 0; i<6; i++) {
207 addr[i] = simple_strtoul(s + 1, &s, 0x10);
208 if (*s != (i==5?')' : ':' ))
209 break;
210 }
211 if (i == 6)
212 return 0;
213 }
214 /* I wonder if we should even let the user continue in this case
215 * - no, it would be better to disable the device
216 */
217 printk(KERN_ERR "ether3: Couldn't read a valid MAC address from card.\n");
218 return -ENODEV;
219 }
220
221 /* --------------------------------------------------------------------------- */
222
223 static int
224 ether3_ramtest(struct net_device *dev, unsigned char byte)
225 {
226 unsigned char *buffer = kmalloc(RX_END, GFP_KERNEL);
227 int i,ret = 0;
228 int max_errors = 4;
229 int bad = -1;
230
231 if (!buffer)
232 return 1;
233
234 memset(buffer, byte, RX_END);
235 ether3_setbuffer(dev, buffer_write, 0);
236 ether3_writebuffer(dev, buffer, TX_END);
237 ether3_setbuffer(dev, buffer_write, RX_START);
238 ether3_writebuffer(dev, buffer + RX_START, RX_LEN);
239 memset(buffer, byte ^ 0xff, RX_END);
240 ether3_setbuffer(dev, buffer_read, 0);
241 ether3_readbuffer(dev, buffer, TX_END);
242 ether3_setbuffer(dev, buffer_read, RX_START);
243 ether3_readbuffer(dev, buffer + RX_START, RX_LEN);
244
245 for (i = 0; i < RX_END; i++) {
246 if (buffer[i] != byte) {
247 if (max_errors > 0 && bad != buffer[i]) {
248 printk("%s: RAM failed with (%02X instead of %02X) at 0x%04X",
249 dev->name, buffer[i], byte, i);
250 ret = 2;
251 max_errors--;
252 bad = i;
253 }
254 } else {
255 if (bad != -1) {
256 if (bad != i - 1)
257 printk(" - 0x%04X\n", i - 1);
258 printk("\n");
259 bad = -1;
260 }
261 }
262 }
263 if (bad != -1)
264 printk(" - 0xffff\n");
265 kfree(buffer);
266
267 return ret;
268 }
269
270 /* ------------------------------------------------------------------------------- */
271
272 static int ether3_init_2(struct net_device *dev)
273 {
274 int i;
275
276 priv(dev)->regs.config1 = CFG1_RECVCOMPSTAT0|CFG1_DMABURST8;
277 priv(dev)->regs.config2 = CFG2_CTRLO|CFG2_RECVCRC|CFG2_ERRENCRC;
278 priv(dev)->regs.command = 0;
279
280 /*
281 * Set up our hardware address
282 */
283 ether3_outw(priv(dev)->regs.config1 | CFG1_BUFSELSTAT0, REG_CONFIG1);
284 for (i = 0; i < 6; i++)
285 ether3_outb(dev->dev_addr[i], REG_BUFWIN);
286
287 if (dev->flags & IFF_PROMISC)
288 priv(dev)->regs.config1 |= CFG1_RECVPROMISC;
289 else if (dev->flags & IFF_MULTICAST)
290 priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI;
291 else
292 priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD;
293
294 /*
295 * There is a problem with the NQ8005 in that it occasionally loses the
296 * last two bytes. To get round this problem, we receive the CRC as
297 * well. That way, if we do lose the last two, then it doesn't matter.
298 */
299 ether3_outw(priv(dev)->regs.config1 | CFG1_TRANSEND, REG_CONFIG1);
300 ether3_outw((TX_END>>8) - 1, REG_BUFWIN);
301 ether3_outw(priv(dev)->rx_head, REG_RECVPTR);
302 ether3_outw(0, REG_TRANSMITPTR);
303 ether3_outw(priv(dev)->rx_head >> 8, REG_RECVEND);
304 ether3_outw(priv(dev)->regs.config2, REG_CONFIG2);
305 ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
306 ether3_outw(priv(dev)->regs.command, REG_COMMAND);
307
308 i = ether3_ramtest(dev, 0x5A);
309 if(i)
310 return i;
311 i = ether3_ramtest(dev, 0x1E);
312 if(i)
313 return i;
314
315 ether3_setbuffer(dev, buffer_write, 0);
316 ether3_writelong(dev, 0);
317 return 0;
318 }
319
320 static void
321 ether3_init_for_open(struct net_device *dev)
322 {
323 int i;
324
325 /* Reset the chip */
326 ether3_outw(CFG2_RESET, REG_CONFIG2);
327 udelay(4);
328
329 priv(dev)->regs.command = 0;
330 ether3_outw(CMD_RXOFF|CMD_TXOFF, REG_COMMAND);
331 while (ether3_inw(REG_STATUS) & (STAT_RXON|STAT_TXON))
332 barrier();
333
334 ether3_outw(priv(dev)->regs.config1 | CFG1_BUFSELSTAT0, REG_CONFIG1);
335 for (i = 0; i < 6; i++)
336 ether3_outb(dev->dev_addr[i], REG_BUFWIN);
337
338 priv(dev)->tx_head = 0;
339 priv(dev)->tx_tail = 0;
340 priv(dev)->regs.config2 |= CFG2_CTRLO;
341 priv(dev)->rx_head = RX_START;
342
343 ether3_outw(priv(dev)->regs.config1 | CFG1_TRANSEND, REG_CONFIG1);
344 ether3_outw((TX_END>>8) - 1, REG_BUFWIN);
345 ether3_outw(priv(dev)->rx_head, REG_RECVPTR);
346 ether3_outw(priv(dev)->rx_head >> 8, REG_RECVEND);
347 ether3_outw(0, REG_TRANSMITPTR);
348 ether3_outw(priv(dev)->regs.config2, REG_CONFIG2);
349 ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
350
351 ether3_setbuffer(dev, buffer_write, 0);
352 ether3_writelong(dev, 0);
353
354 priv(dev)->regs.command = CMD_ENINTRX | CMD_ENINTTX;
355 ether3_outw(priv(dev)->regs.command | CMD_RXON, REG_COMMAND);
356 }
357
358 static inline int
359 ether3_probe_bus_8(struct net_device *dev, int val)
360 {
361 int write_low, write_high, read_low, read_high;
362
363 write_low = val & 255;
364 write_high = val >> 8;
365
366 printk(KERN_DEBUG "ether3_probe: write8 [%02X:%02X]", write_high, write_low);
367
368 ether3_outb(write_low, REG_RECVPTR);
369 ether3_outb(write_high, REG_RECVPTR + 4);
370
371 read_low = ether3_inb(REG_RECVPTR);
372 read_high = ether3_inb(REG_RECVPTR + 4);
373
374 printk(", read8 [%02X:%02X]\n", read_high, read_low);
375
376 return read_low == write_low && read_high == write_high;
377 }
378
379 static inline int
380 ether3_probe_bus_16(struct net_device *dev, int val)
381 {
382 int read_val;
383
384 ether3_outw(val, REG_RECVPTR);
385 read_val = ether3_inw(REG_RECVPTR);
386
387 printk(KERN_DEBUG "ether3_probe: write16 [%04X], read16 [%04X]\n", val, read_val);
388
389 return read_val == val;
390 }
391
392 /*
393 * Open/initialize the board. This is called (in the current kernel)
394 * sometime after booting when the 'ifconfig' program is run.
395 *
396 * This routine should set everything up anew at each open, even
397 * registers that "should" only need to be set once at boot, so that
398 * there is non-reboot way to recover if something goes wrong.
399 */
400 static int
401 ether3_open(struct net_device *dev)
402 {
403 if (request_irq(dev->irq, ether3_interrupt, 0, "ether3", dev))
404 return -EAGAIN;
405
406 ether3_init_for_open(dev);
407
408 netif_start_queue(dev);
409
410 return 0;
411 }
412
413 /*
414 * The inverse routine to ether3_open().
415 */
416 static int
417 ether3_close(struct net_device *dev)
418 {
419 netif_stop_queue(dev);
420
421 disable_irq(dev->irq);
422
423 ether3_outw(CMD_RXOFF|CMD_TXOFF, REG_COMMAND);
424 priv(dev)->regs.command = 0;
425 while (ether3_inw(REG_STATUS) & (STAT_RXON|STAT_TXON))
426 barrier();
427 ether3_outb(0x80, REG_CONFIG2 + 4);
428 ether3_outw(0, REG_COMMAND);
429
430 free_irq(dev->irq, dev);
431
432 return 0;
433 }
434
435 /*
436 * Set or clear promiscuous/multicast mode filter for this adaptor.
437 *
438 * We don't attempt any packet filtering. The card may have a SEEQ 8004
439 * in which does not have the other ethernet address registers present...
440 */
441 static void ether3_setmulticastlist(struct net_device *dev)
442 {
443 priv(dev)->regs.config1 &= ~CFG1_RECVPROMISC;
444
445 if (dev->flags & IFF_PROMISC) {
446 /* promiscuous mode */
447 priv(dev)->regs.config1 |= CFG1_RECVPROMISC;
448 } else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) {
449 priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI;
450 } else
451 priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD;
452
453 ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1);
454 }
455
456 static void ether3_timeout(struct net_device *dev)
457 {
458 unsigned long flags;
459
460 del_timer(&priv(dev)->timer);
461
462 local_irq_save(flags);
463 printk(KERN_ERR "%s: transmit timed out, network cable problem?\n", dev->name);
464 printk(KERN_ERR "%s: state: { status=%04X cfg1=%04X cfg2=%04X }\n", dev->name,
465 ether3_inw(REG_STATUS), ether3_inw(REG_CONFIG1), ether3_inw(REG_CONFIG2));
466 printk(KERN_ERR "%s: { rpr=%04X rea=%04X tpr=%04X }\n", dev->name,
467 ether3_inw(REG_RECVPTR), ether3_inw(REG_RECVEND), ether3_inw(REG_TRANSMITPTR));
468 printk(KERN_ERR "%s: tx head=%X tx tail=%X\n", dev->name,
469 priv(dev)->tx_head, priv(dev)->tx_tail);
470 ether3_setbuffer(dev, buffer_read, priv(dev)->tx_tail);
471 printk(KERN_ERR "%s: packet status = %08X\n", dev->name, ether3_readlong(dev));
472 local_irq_restore(flags);
473
474 priv(dev)->regs.config2 |= CFG2_CTRLO;
475 dev->stats.tx_errors += 1;
476 ether3_outw(priv(dev)->regs.config2, REG_CONFIG2);
477 priv(dev)->tx_head = priv(dev)->tx_tail = 0;
478
479 netif_wake_queue(dev);
480 }
481
482 /*
483 * Transmit a packet
484 */
485 static netdev_tx_t
486 ether3_sendpacket(struct sk_buff *skb, struct net_device *dev)
487 {
488 unsigned long flags;
489 unsigned int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
490 unsigned int ptr, next_ptr;
491
492 if (priv(dev)->broken) {
493 dev_kfree_skb(skb);
494 dev->stats.tx_dropped++;
495 netif_start_queue(dev);
496 return NETDEV_TX_OK;
497 }
498
499 length = (length + 1) & ~1;
500 if (length != skb->len) {
501 if (skb_padto(skb, length))
502 goto out;
503 }
504
505 next_ptr = (priv(dev)->tx_head + 1) & 15;
506
507 local_irq_save(flags);
508
509 if (priv(dev)->tx_tail == next_ptr) {
510 local_irq_restore(flags);
511 return NETDEV_TX_BUSY; /* unable to queue */
512 }
513
514 ptr = 0x600 * priv(dev)->tx_head;
515 priv(dev)->tx_head = next_ptr;
516 next_ptr *= 0x600;
517
518 #define TXHDR_FLAGS (TXHDR_TRANSMIT|TXHDR_CHAINCONTINUE|TXHDR_DATAFOLLOWS|TXHDR_ENSUCCESS)
519
520 ether3_setbuffer(dev, buffer_write, next_ptr);
521 ether3_writelong(dev, 0);
522 ether3_setbuffer(dev, buffer_write, ptr);
523 ether3_writelong(dev, 0);
524 ether3_writebuffer(dev, skb->data, length);
525 ether3_writeword(dev, htons(next_ptr));
526 ether3_writeword(dev, TXHDR_CHAINCONTINUE >> 16);
527 ether3_setbuffer(dev, buffer_write, ptr);
528 ether3_writeword(dev, htons((ptr + length + 4)));
529 ether3_writeword(dev, TXHDR_FLAGS >> 16);
530 ether3_ledon(dev);
531
532 if (!(ether3_inw(REG_STATUS) & STAT_TXON)) {
533 ether3_outw(ptr, REG_TRANSMITPTR);
534 ether3_outw(priv(dev)->regs.command | CMD_TXON, REG_COMMAND);
535 }
536
537 next_ptr = (priv(dev)->tx_head + 1) & 15;
538 local_irq_restore(flags);
539
540 dev_kfree_skb(skb);
541
542 if (priv(dev)->tx_tail == next_ptr)
543 netif_stop_queue(dev);
544
545 out:
546 return NETDEV_TX_OK;
547 }
548
549 static irqreturn_t
550 ether3_interrupt(int irq, void *dev_id)
551 {
552 struct net_device *dev = (struct net_device *)dev_id;
553 unsigned int status, handled = IRQ_NONE;
554
555 #if NET_DEBUG > 1
556 if(net_debug & DEBUG_INT)
557 printk("eth3irq: %d ", irq);
558 #endif
559
560 status = ether3_inw(REG_STATUS);
561
562 if (status & STAT_INTRX) {
563 ether3_outw(CMD_ACKINTRX | priv(dev)->regs.command, REG_COMMAND);
564 ether3_rx(dev, 12);
565 handled = IRQ_HANDLED;
566 }
567
568 if (status & STAT_INTTX) {
569 ether3_outw(CMD_ACKINTTX | priv(dev)->regs.command, REG_COMMAND);
570 ether3_tx(dev);
571 handled = IRQ_HANDLED;
572 }
573
574 #if NET_DEBUG > 1
575 if(net_debug & DEBUG_INT)
576 printk("done\n");
577 #endif
578 return handled;
579 }
580
581 /*
582 * If we have a good packet(s), get it/them out of the buffers.
583 */
584 static int ether3_rx(struct net_device *dev, unsigned int maxcnt)
585 {
586 unsigned int next_ptr = priv(dev)->rx_head, received = 0;
587
588 ether3_ledon(dev);
589
590 do {
591 unsigned int this_ptr, status;
592 unsigned char addrs[16];
593
594 /*
595 * read the first 16 bytes from the buffer.
596 * This contains the status bytes etc and ethernet addresses,
597 * and we also check the source ethernet address to see if
598 * it originated from us.
599 */
600 {
601 unsigned int temp_ptr;
602 ether3_setbuffer(dev, buffer_read, next_ptr);
603 temp_ptr = ether3_readword(dev);
604 status = ether3_readword(dev);
605 if ((status & (RXSTAT_DONE | RXHDR_CHAINCONTINUE | RXHDR_RECEIVE)) !=
606 (RXSTAT_DONE | RXHDR_CHAINCONTINUE) || !temp_ptr)
607 break;
608
609 this_ptr = next_ptr + 4;
610 next_ptr = ntohs(temp_ptr);
611 }
612 ether3_setbuffer(dev, buffer_read, this_ptr);
613 ether3_readbuffer(dev, addrs+2, 12);
614
615 if (next_ptr < RX_START || next_ptr >= RX_END) {
616 int i;
617 printk("%s: bad next pointer @%04X: ", dev->name, priv(dev)->rx_head);
618 printk("%02X %02X %02X %02X ", next_ptr >> 8, next_ptr & 255, status & 255, status >> 8);
619 for (i = 2; i < 14; i++)
620 printk("%02X ", addrs[i]);
621 printk("\n");
622 next_ptr = priv(dev)->rx_head;
623 break;
624 }
625 /*
626 * ignore our own packets...
627 */
628 if (!(*(unsigned long *)&dev->dev_addr[0] ^ *(unsigned long *)&addrs[2+6]) &&
629 !(*(unsigned short *)&dev->dev_addr[4] ^ *(unsigned short *)&addrs[2+10])) {
630 maxcnt ++; /* compensate for loopedback packet */
631 ether3_outw(next_ptr >> 8, REG_RECVEND);
632 } else
633 if (!(status & (RXSTAT_OVERSIZE|RXSTAT_CRCERROR|RXSTAT_DRIBBLEERROR|RXSTAT_SHORTPACKET))) {
634 unsigned int length = next_ptr - this_ptr;
635 struct sk_buff *skb;
636
637 if (next_ptr <= this_ptr)
638 length += RX_END - RX_START;
639
640 skb = netdev_alloc_skb(dev, length + 2);
641 if (skb) {
642 unsigned char *buf;
643
644 skb_reserve(skb, 2);
645 buf = skb_put(skb, length);
646 ether3_readbuffer(dev, buf + 12, length - 12);
647 ether3_outw(next_ptr >> 8, REG_RECVEND);
648 *(unsigned short *)(buf + 0) = *(unsigned short *)(addrs + 2);
649 *(unsigned long *)(buf + 2) = *(unsigned long *)(addrs + 4);
650 *(unsigned long *)(buf + 6) = *(unsigned long *)(addrs + 8);
651 *(unsigned short *)(buf + 10) = *(unsigned short *)(addrs + 12);
652 skb->protocol = eth_type_trans(skb, dev);
653 netif_rx(skb);
654 received ++;
655 } else {
656 ether3_outw(next_ptr >> 8, REG_RECVEND);
657 dev->stats.rx_dropped++;
658 goto done;
659 }
660 } else {
661 struct net_device_stats *stats = &dev->stats;
662 ether3_outw(next_ptr >> 8, REG_RECVEND);
663 if (status & RXSTAT_OVERSIZE) stats->rx_over_errors ++;
664 if (status & RXSTAT_CRCERROR) stats->rx_crc_errors ++;
665 if (status & RXSTAT_DRIBBLEERROR) stats->rx_fifo_errors ++;
666 if (status & RXSTAT_SHORTPACKET) stats->rx_length_errors ++;
667 stats->rx_errors++;
668 }
669 }
670 while (-- maxcnt);
671
672 done:
673 dev->stats.rx_packets += received;
674 priv(dev)->rx_head = next_ptr;
675 /*
676 * If rx went off line, then that means that the buffer may be full. We
677 * have dropped at least one packet.
678 */
679 if (!(ether3_inw(REG_STATUS) & STAT_RXON)) {
680 dev->stats.rx_dropped++;
681 ether3_outw(next_ptr, REG_RECVPTR);
682 ether3_outw(priv(dev)->regs.command | CMD_RXON, REG_COMMAND);
683 }
684
685 return maxcnt;
686 }
687
688 /*
689 * Update stats for the transmitted packet(s)
690 */
691 static void ether3_tx(struct net_device *dev)
692 {
693 unsigned int tx_tail = priv(dev)->tx_tail;
694 int max_work = 14;
695
696 do {
697 unsigned long status;
698
699 /*
700 * Read the packet header
701 */
702 ether3_setbuffer(dev, buffer_read, tx_tail * 0x600);
703 status = ether3_readlong(dev);
704
705 /*
706 * Check to see if this packet has been transmitted
707 */
708 if ((status & (TXSTAT_DONE | TXHDR_TRANSMIT)) !=
709 (TXSTAT_DONE | TXHDR_TRANSMIT))
710 break;
711
712 /*
713 * Update errors
714 */
715 if (!(status & (TXSTAT_BABBLED | TXSTAT_16COLLISIONS)))
716 dev->stats.tx_packets++;
717 else {
718 dev->stats.tx_errors++;
719 if (status & TXSTAT_16COLLISIONS)
720 dev->stats.collisions += 16;
721 if (status & TXSTAT_BABBLED)
722 dev->stats.tx_fifo_errors++;
723 }
724
725 tx_tail = (tx_tail + 1) & 15;
726 } while (--max_work);
727
728 if (priv(dev)->tx_tail != tx_tail) {
729 priv(dev)->tx_tail = tx_tail;
730 netif_wake_queue(dev);
731 }
732 }
733
734 static void ether3_banner(void)
735 {
736 static unsigned version_printed = 0;
737
738 if (net_debug && version_printed++ == 0)
739 printk(KERN_INFO "%s", version);
740 }
741
742 static const struct net_device_ops ether3_netdev_ops = {
743 .ndo_open = ether3_open,
744 .ndo_stop = ether3_close,
745 .ndo_start_xmit = ether3_sendpacket,
746 .ndo_set_rx_mode = ether3_setmulticastlist,
747 .ndo_tx_timeout = ether3_timeout,
748 .ndo_validate_addr = eth_validate_addr,
749 .ndo_set_mac_address = eth_mac_addr,
750 };
751
752 static int
753 ether3_probe(struct expansion_card *ec, const struct ecard_id *id)
754 {
755 const struct ether3_data *data = id->data;
756 struct net_device *dev;
757 int bus_type, ret;
758
759 ether3_banner();
760
761 ret = ecard_request_resources(ec);
762 if (ret)
763 goto out;
764
765 dev = alloc_etherdev(sizeof(struct dev_priv));
766 if (!dev) {
767 ret = -ENOMEM;
768 goto release;
769 }
770
771 SET_NETDEV_DEV(dev, &ec->dev);
772
773 priv(dev)->base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
774 if (!priv(dev)->base) {
775 ret = -ENOMEM;
776 goto free;
777 }
778
779 ec->irqaddr = priv(dev)->base + data->base_offset;
780 ec->irqmask = 0xf0;
781
782 priv(dev)->seeq = priv(dev)->base + data->base_offset;
783 dev->irq = ec->irq;
784
785 ether3_addr(dev->dev_addr, ec);
786
787 priv(dev)->dev = dev;
788 timer_setup(&priv(dev)->timer, ether3_ledoff, 0);
789
790 /* Reset card...
791 */
792 ether3_outb(0x80, REG_CONFIG2 + 4);
793 bus_type = BUS_UNKNOWN;
794 udelay(4);
795
796 /* Test using Receive Pointer (16-bit register) to find out
797 * how the ether3 is connected to the bus...
798 */
799 if (ether3_probe_bus_8(dev, 0x100) &&
800 ether3_probe_bus_8(dev, 0x201))
801 bus_type = BUS_8;
802
803 if (bus_type == BUS_UNKNOWN &&
804 ether3_probe_bus_16(dev, 0x101) &&
805 ether3_probe_bus_16(dev, 0x201))
806 bus_type = BUS_16;
807
808 switch (bus_type) {
809 case BUS_UNKNOWN:
810 printk(KERN_ERR "%s: unable to identify bus width\n", dev->name);
811 ret = -ENODEV;
812 goto free;
813
814 case BUS_8:
815 printk(KERN_ERR "%s: %s found, but is an unsupported "
816 "8-bit card\n", dev->name, data->name);
817 ret = -ENODEV;
818 goto free;
819
820 default:
821 break;
822 }
823
824 if (ether3_init_2(dev)) {
825 ret = -ENODEV;
826 goto free;
827 }
828
829 dev->netdev_ops = &ether3_netdev_ops;
830 dev->watchdog_timeo = 5 * HZ / 100;
831
832 ret = register_netdev(dev);
833 if (ret)
834 goto free;
835
836 printk("%s: %s in slot %d, %pM\n",
837 dev->name, data->name, ec->slot_no, dev->dev_addr);
838
839 ecard_set_drvdata(ec, dev);
840 return 0;
841
842 free:
843 free_netdev(dev);
844 release:
845 ecard_release_resources(ec);
846 out:
847 return ret;
848 }
849
850 static void ether3_remove(struct expansion_card *ec)
851 {
852 struct net_device *dev = ecard_get_drvdata(ec);
853
854 ecard_set_drvdata(ec, NULL);
855
856 unregister_netdev(dev);
857 free_netdev(dev);
858 ecard_release_resources(ec);
859 }
860
861 static struct ether3_data ether3 = {
862 .name = "ether3",
863 .base_offset = 0,
864 };
865
866 static struct ether3_data etherb = {
867 .name = "etherb",
868 .base_offset = 0x800,
869 };
870
871 static const struct ecard_id ether3_ids[] = {
872 { MANU_ANT2, PROD_ANT_ETHER3, &ether3 },
873 { MANU_ANT, PROD_ANT_ETHER3, &ether3 },
874 { MANU_ANT, PROD_ANT_ETHERB, &etherb },
875 { 0xffff, 0xffff }
876 };
877
878 static struct ecard_driver ether3_driver = {
879 .probe = ether3_probe,
880 .remove = ether3_remove,
881 .id_table = ether3_ids,
882 .drv = {
883 .name = "ether3",
884 },
885 };
886
887 static int __init ether3_init(void)
888 {
889 return ecard_register_driver(&ether3_driver);
890 }
891
892 static void __exit ether3_exit(void)
893 {
894 ecard_remove_driver(&ether3_driver);
895 }
896
897 module_init(ether3_init);
898 module_exit(ether3_exit);
899
900 MODULE_LICENSE("GPL");
Linux with added FPC-III support