1 /* ne2.c: A NE/2 Ethernet Driver for Linux. */
2 /*
3 Based on the NE2000 driver written by Donald Becker (1992-94).
4 modified by Wim Dumon (Apr 1996)
5
6 This software may be used and distributed according to the terms
7 of the GNU Public License, incorporated herein by reference.
8
9 The author may be reached as wimpie@linux.cc.kuleuven.ac.be
10
11 Currently supported: NE/2
12 This patch was never tested on other MCA-ethernet adapters, but it
13 might work. Just give it a try and let me know if you have problems.
14 Also mail me if it really works, please!
15
16 Changelog:
17 Mon Feb 3 16:26:02 MET 1997
18 - adapted the driver to work with the 2.1.25 kernel
19 - multiple ne2 support (untested)
20 - module support (untested)
21
22 Fri Aug 28 00:18:36 CET 1998 (David Weinehall)
23 - fixed a few minor typos
24 - made the MODULE_PARM conditional (it only works with the v2.1.x kernels)
25 - fixed the module support (Now it's working...)
26
27 Mon Sep 7 19:01:44 CET 1998 (David Weinehall)
28 - added support for Arco Electronics AE/2-card (experimental)
29
30 Mon Sep 14 09:53:42 CET 1998 (David Weinehall)
31 - added support for Compex ENET-16MC/P (experimental)
32
33 Tue Sep 15 16:21:12 CET 1998 (David Weinehall, Magnus Jonsson, Tomas Ogren)
34 - Miscellaneous bugfixes
35
36 Tue Sep 19 16:21:12 CET 1998 (Magnus Jonsson)
37 - Cleanup
38
39 Wed Sep 23 14:33:34 CET 1998 (David Weinehall)
40 - Restructuring and rewriting for v2.1.x compliance
41
42 Wed Oct 14 17:19:21 CET 1998 (David Weinehall)
43 - Added code that unregisters irq and proc-info
44 - Version# bump
45
46 Mon Nov 16 15:28:23 CET 1998 (Wim Dumon)
47 - pass 'dev' as last parameter of request_irq in stead of 'NULL'
48
49 * WARNING
50 -------
51 This is alpha-test software. It is not guaranteed to work. As a
52 matter of fact, I'm quite sure there are *LOTS* of bugs in here. I
53 would like to hear from you if you use this driver, even if it works.
54 If it doesn't work, be sure to send me a mail with the problems !
55 */
56
57 static const char *version = "ne2.c:v0.91 Nov 16 1998 Wim Dumon <wimpie@kotnet.org>\n";
58
59 #include <linux/module.h>
60 #include <linux/version.h>
61
62 #include <linux/kernel.h>
63 #include <linux/sched.h>
64 #include <linux/types.h>
65 #include <linux/fcntl.h>
66 #include <linux/interrupt.h>
67 #include <linux/ptrace.h>
68 #include <linux/ioport.h>
69 #include <linux/in.h>
70 #include <linux/malloc.h>
71 #include <linux/string.h>
72 #include <asm/system.h>
73 #include <asm/bitops.h>
74 #include <asm/io.h>
75 #include <asm/dma.h>
76 #include <linux/errno.h>
77 #include <linux/init.h>
78 #include <linux/mca.h>
79
80 #include <linux/netdevice.h>
81 #include <linux/etherdevice.h>
82 #include <linux/skbuff.h>
83 #include "8390.h"
84
85
86
87 /* Some defines that people can play with if so inclined. */
88
89 /* Do we perform extra sanity checks on stuff ? */
90 /* #define NE_SANITY_CHECK */
91
92 /* Do we implement the read before write bugfix ? */
93 /* #define NE_RW_BUGFIX */
94
95 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
96 /* #define PACKETBUF_MEMSIZE 0x40 */
97
98
99 /* ---- No user-serviceable parts below ---- */
100
101 #define NE_BASE (dev->base_addr)
102 #define NE_CMD 0x00
103 #define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
104 #define NE_RESET 0x20 /* Issue a read to reset, a write to clear. */
105 #define NE_IO_EXTENT 0x30
106
107 #define NE1SM_START_PG 0x20 /* First page of TX buffer */
108 #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
109 #define NESM_START_PG 0x40 /* First page of TX buffer */
110 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
111
112 /* From the .ADF file: */
113 static unsigned int addresses[7] __initdata =
114 {0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0};
115 static int irqs[4] __initdata = {3, 4, 5, 9};
116
117 struct ne2_adapters_t {
118 unsigned int id;
119 char *name;
120 };
121
122 static struct ne2_adapters_t ne2_adapters[] __initdata = {
123 { 0x6354, "Arco Ethernet Adapter AE/2" },
124 { 0x70DE, "Compex ENET-16 MC/P" },
125 { 0x7154, "Novell Ethernet Adapter NE/2" },
126 { 0x0000, NULL }
127 };
128
129 extern int netcard_probe(struct net_device *dev);
130
131 static int ne2_probe1(struct net_device *dev, int slot);
132
133 static int ne_open(struct net_device *dev);
134 static int ne_close(struct net_device *dev);
135
136 static void ne_reset_8390(struct net_device *dev);
137 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
138 int ring_page);
139 static void ne_block_input(struct net_device *dev, int count,
140 struct sk_buff *skb, int ring_offset);
141 static void ne_block_output(struct net_device *dev, const int count,
142 const unsigned char *buf, const int start_page);
143
144
145 /*
146 * Note that at boot, this probe only picks up one card at a time.
147 */
148
149 int __init ne2_probe(struct net_device *dev)
150 {
151 static int current_mca_slot = -1;
152 int i;
153 int adapter_found = 0;
154
155 SET_MODULE_OWNER(dev);
156
157 /* Do not check any supplied i/o locations.
158 POS registers usually don't fail :) */
159
160 /* MCA cards have POS registers.
161 Autodetecting MCA cards is extremely simple.
162 Just search for the card. */
163
164 for(i = 0; (ne2_adapters[i].name != NULL) && !adapter_found; i++) {
165 current_mca_slot =
166 mca_find_unused_adapter(ne2_adapters[i].id, 0);
167
168 if((current_mca_slot != MCA_NOTFOUND) && !adapter_found) {
169 mca_set_adapter_name(current_mca_slot,
170 ne2_adapters[i].name);
171 mca_mark_as_used(current_mca_slot);
172
173 return ne2_probe1(dev, current_mca_slot);
174 }
175 }
176 return -ENODEV;
177 }
178
179
180 static int ne2_procinfo(char *buf, int slot, struct net_device *dev)
181 {
182 int len=0;
183
184 len += sprintf(buf+len, "The NE/2 Ethernet Adapter\n" );
185 len += sprintf(buf+len, "Driver written by Wim Dumon ");
186 len += sprintf(buf+len, "<wimpie@kotnet.org>\n");
187 len += sprintf(buf+len, "Modified by ");
188 len += sprintf(buf+len, "David Weinehall <tao@acc.umu.se>\n");
189 len += sprintf(buf+len, "and by Magnus Jonsson <bigfoot@acc.umu.se>\n");
190 len += sprintf(buf+len, "Based on the original NE2000 drivers\n" );
191 len += sprintf(buf+len, "Base IO: %#x\n", (unsigned int)dev->base_addr);
192 len += sprintf(buf+len, "IRQ : %d\n", dev->irq);
193
194 #define HW_ADDR(i) dev->dev_addr[i]
195 len += sprintf(buf+len, "HW addr : %x:%x:%x:%x:%x:%x\n",
196 HW_ADDR(0), HW_ADDR(1), HW_ADDR(2),
197 HW_ADDR(3), HW_ADDR(4), HW_ADDR(5) );
198 #undef HW_ADDR
199
200 return len;
201 }
202
203 static int __init ne2_probe1(struct net_device *dev, int slot)
204 {
205 int i, base_addr, irq, retval;
206 unsigned char POS;
207 unsigned char SA_prom[32];
208 const char *name = "NE/2";
209 int start_page, stop_page;
210 static unsigned version_printed;
211
212 if (ei_debug && version_printed++ == 0)
213 printk(version);
214
215 printk("NE/2 ethercard found in slot %d:", slot);
216
217 /* Read base IO and IRQ from the POS-registers */
218 POS = mca_read_stored_pos(slot, 2);
219 if(!(POS % 2)) {
220 printk(" disabled.\n");
221 return -ENODEV;
222 }
223
224 i = (POS & 0xE)>>1;
225 /* printk("Halleluja sdog, als er na de pijl een 1 staat is 1 - 1 == 0"
226 " en zou het moeten werken -> %d\n", i);
227 The above line was for remote testing, thanx to sdog ... */
228 base_addr = addresses[i - 1];
229 irq = irqs[(POS & 0x60)>>5];
230
231 if (!request_region(base_addr, NE_IO_EXTENT, dev->name))
232 return -EBUSY;
233
234 #ifdef DEBUG
235 printk("POS info : pos 2 = %#x ; base = %#x ; irq = %ld\n", POS,
236 base_addr, irq);
237 #endif
238
239 #ifndef CRYNWR_WAY
240 /* Reset the card the way they do it in the Crynwr packet driver */
241 for (i=0; i<8; i++)
242 outb(0x0, base_addr + NE_RESET);
243 inb(base_addr + NE_RESET);
244 outb(0x21, base_addr + NE_CMD);
245 if (inb(base_addr + NE_CMD) != 0x21) {
246 printk("NE/2 adapter not responding\n");
247 retval = -ENODEV;
248 goto out;
249 }
250
251 /* In the crynwr sources they do a RAM-test here. I skip it. I suppose
252 my RAM is okay. Suppose your memory is broken. Then this test
253 should fail and you won't be able to use your card. But if I do not
254 test, you won't be able to use your card, neither. So this test
255 won't help you. */
256
257 #else /* _I_ never tested it this way .. Go ahead and try ...*/
258 /* Reset card. Who knows what dain-bramaged state it was left in. */
259 {
260 unsigned long reset_start_time = jiffies;
261
262 /* DON'T change these to inb_p/outb_p or reset will fail on
263 clones.. */
264 outb(inb(base_addr + NE_RESET), base_addr + NE_RESET);
265
266 while ((inb_p(base_addr + EN0_ISR) & ENISR_RESET) == 0)
267 if (jiffies - reset_start_time > 2*HZ/100) {
268 printk(" not found (no reset ack).\n");
269 retval = -ENODEV;
270 goto out;
271 }
272
273 outb_p(0xff, base_addr + EN0_ISR); /* Ack all intr. */
274 }
275 #endif
276
277
278 /* Read the 16 bytes of station address PROM.
279 We must first initialize registers, similar to
280 NS8390_init(eifdev, 0).
281 We can't reliably read the SAPROM address without this.
282 (I learned the hard way!). */
283 {
284 struct {
285 unsigned char value, offset;
286 } program_seq[] = {
287 /* Select page 0 */
288 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD},
289 {0x49, EN0_DCFG}, /* Set WORD-wide (0x49) access. */
290 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
291 {0x00, EN0_RCNTHI},
292 {0x00, EN0_IMR}, /* Mask completion irq. */
293 {0xFF, EN0_ISR},
294 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
295 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
296 {32, EN0_RCNTLO},
297 {0x00, EN0_RCNTHI},
298 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
299 {0x00, EN0_RSARHI},
300 {E8390_RREAD+E8390_START, E8390_CMD},
301 };
302
303 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
304 outb_p(program_seq[i].value, base_addr +
305 program_seq[i].offset);
306
307 }
308 for(i = 0; i < 6 /*sizeof(SA_prom)*/; i+=1) {
309 SA_prom[i] = inb(base_addr + NE_DATAPORT);
310 }
311
312 start_page = NESM_START_PG;
313 stop_page = NESM_STOP_PG;
314
315 dev->irq=irq;
316
317 /* Snarf the interrupt now. There's no point in waiting since we cannot
318 share and the board will usually be enabled. */
319 retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev);
320 if (retval) {
321 printk (" unable to get IRQ %d (irqval=%d).\n",
322 dev->irq, retval);
323 goto out;
324 }
325
326 dev->base_addr = base_addr;
327
328 /* Allocate dev->priv and fill in 8390 specific dev fields. */
329 if (ethdev_init(dev)) {
330 printk (" unable to get memory for dev->priv.\n");
331 free_irq(dev->irq, dev);
332 retval = -ENOMEM;
333 goto out;
334 }
335
336 for(i = 0; i < ETHER_ADDR_LEN; i++) {
337 printk(" %2.2x", SA_prom[i]);
338 dev->dev_addr[i] = SA_prom[i];
339 }
340
341 printk("\n%s: %s found at %#x, using IRQ %d.\n",
342 dev->name, name, base_addr, dev->irq);
343
344 mca_set_adapter_procfn(slot, (MCA_ProcFn) ne2_procinfo, dev);
345
346 ei_status.name = name;
347 ei_status.tx_start_page = start_page;
348 ei_status.stop_page = stop_page;
349 ei_status.word16 = (2 == 2);
350
351 ei_status.rx_start_page = start_page + TX_PAGES;
352 #ifdef PACKETBUF_MEMSIZE
353 /* Allow the packet buffer size to be overridden by know-it-alls. */
354 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
355 #endif
356
357 ei_status.reset_8390 = &ne_reset_8390;
358 ei_status.block_input = &ne_block_input;
359 ei_status.block_output = &ne_block_output;
360 ei_status.get_8390_hdr = &ne_get_8390_hdr;
361
362 ei_status.priv = slot;
363
364 dev->open = &ne_open;
365 dev->stop = &ne_close;
366 NS8390_init(dev, 0);
367 return 0;
368 out:
369 release_region(base_addr, NE_IO_EXTENT);
370 return retval;
371 }
372
373 static int ne_open(struct net_device *dev)
374 {
375 ei_open(dev);
376 return 0;
377 }
378
379 static int ne_close(struct net_device *dev)
380 {
381 if (ei_debug > 1)
382 printk("%s: Shutting down ethercard.\n", dev->name);
383 ei_close(dev);
384 return 0;
385 }
386
387 /* Hard reset the card. This used to pause for the same period that a
388 8390 reset command required, but that shouldn't be necessary. */
389 static void ne_reset_8390(struct net_device *dev)
390 {
391 unsigned long reset_start_time = jiffies;
392
393 if (ei_debug > 1)
394 printk("resetting the 8390 t=%ld...", jiffies);
395
396 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
397 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
398
399 ei_status.txing = 0;
400 ei_status.dmaing = 0;
401
402 /* This check _should_not_ be necessary, omit eventually. */
403 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
404 if (jiffies - reset_start_time > 2*HZ/100) {
405 printk("%s: ne_reset_8390() did not complete.\n",
406 dev->name);
407 break;
408 }
409 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
410 }
411
412 /* Grab the 8390 specific header. Similar to the block_input routine, but
413 we don't need to be concerned with ring wrap as the header will be at
414 the start of a page, so we optimize accordingly. */
415
416 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
417 int ring_page)
418 {
419
420 int nic_base = dev->base_addr;
421
422 /* This *shouldn't* happen.
423 If it does, it's the last thing you'll see */
424 if (ei_status.dmaing) {
425 printk("%s: DMAing conflict in ne_get_8390_hdr "
426 "[DMAstat:%d][irqlock:%d].\n",
427 dev->name, ei_status.dmaing, ei_status.irqlock);
428 return;
429 }
430
431 ei_status.dmaing |= 0x01;
432 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
433 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
434 outb_p(0, nic_base + EN0_RCNTHI);
435 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
436 outb_p(ring_page, nic_base + EN0_RSARHI);
437 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
438
439 if (ei_status.word16)
440 insw(NE_BASE + NE_DATAPORT, hdr,
441 sizeof(struct e8390_pkt_hdr)>>1);
442 else
443 insb(NE_BASE + NE_DATAPORT, hdr,
444 sizeof(struct e8390_pkt_hdr));
445
446 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
447 ei_status.dmaing &= ~0x01;
448 }
449
450 /* Block input and output, similar to the Crynwr packet driver. If you
451 are porting to a new ethercard, look at the packet driver source for
452 hints. The NEx000 doesn't share the on-board packet memory -- you have
453 to put the packet out through the "remote DMA" dataport using outb. */
454
455 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb,
456 int ring_offset)
457 {
458 #ifdef NE_SANITY_CHECK
459 int xfer_count = count;
460 #endif
461 int nic_base = dev->base_addr;
462 char *buf = skb->data;
463
464 /* This *shouldn't* happen.
465 If it does, it's the last thing you'll see */
466 if (ei_status.dmaing) {
467 printk("%s: DMAing conflict in ne_block_input "
468 "[DMAstat:%d][irqlock:%d].\n",
469 dev->name, ei_status.dmaing, ei_status.irqlock);
470 return;
471 }
472 ei_status.dmaing |= 0x01;
473 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
474 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
475 outb_p(count >> 8, nic_base + EN0_RCNTHI);
476 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
477 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
478 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
479 if (ei_status.word16) {
480 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
481 if (count & 0x01) {
482 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
483 #ifdef NE_SANITY_CHECK
484 xfer_count++;
485 #endif
486 }
487 } else {
488 insb(NE_BASE + NE_DATAPORT, buf, count);
489 }
490
491 #ifdef NE_SANITY_CHECK
492 /* This was for the ALPHA version only, but enough people have
493 been encountering problems so it is still here. If you see
494 this message you either 1) have a slightly incompatible clone
495 or 2) have noise/speed problems with your bus. */
496 if (ei_debug > 1) { /* DMA termination address check... */
497 int addr, tries = 20;
498 do {
499 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
500 -- it's broken for Rx on some cards! */
501 int high = inb_p(nic_base + EN0_RSARHI);
502 int low = inb_p(nic_base + EN0_RSARLO);
503 addr = (high << 8) + low;
504 if (((ring_offset + xfer_count) & 0xff) == low)
505 break;
506 } while (--tries > 0);
507 if (tries <= 0)
508 printk("%s: RX transfer address mismatch,"
509 "%#4.4x (expected) vs. %#4.4x (actual).\n",
510 dev->name, ring_offset + xfer_count, addr);
511 }
512 #endif
513 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
514 ei_status.dmaing &= ~0x01;
515 }
516
517 static void ne_block_output(struct net_device *dev, int count,
518 const unsigned char *buf, const int start_page)
519 {
520 int nic_base = NE_BASE;
521 unsigned long dma_start;
522 #ifdef NE_SANITY_CHECK
523 int retries = 0;
524 #endif
525
526 /* Round the count up for word writes. Do we need to do this?
527 What effect will an odd byte count have on the 8390?
528 I should check someday. */
529 if (ei_status.word16 && (count & 0x01))
530 count++;
531
532 /* This *shouldn't* happen.
533 If it does, it's the last thing you'll see */
534 if (ei_status.dmaing) {
535 printk("%s: DMAing conflict in ne_block_output."
536 "[DMAstat:%d][irqlock:%d]\n",
537 dev->name, ei_status.dmaing, ei_status.irqlock);
538 return;
539 }
540 ei_status.dmaing |= 0x01;
541 /* We should already be in page 0, but to be safe... */
542 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
543
544 #ifdef NE_SANITY_CHECK
545 retry:
546 #endif
547
548 #ifdef NE8390_RW_BUGFIX
549 /* Handle the read-before-write bug the same way as the
550 Crynwr packet driver -- the NatSemi method doesn't work.
551 Actually this doesn't always work either, but if you have
552 problems with your NEx000 this is better than nothing! */
553 outb_p(0x42, nic_base + EN0_RCNTLO);
554 outb_p(0x00, nic_base + EN0_RCNTHI);
555 outb_p(0x42, nic_base + EN0_RSARLO);
556 outb_p(0x00, nic_base + EN0_RSARHI);
557 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
558 /* Make certain that the dummy read has occurred. */
559 SLOW_DOWN_IO;
560 SLOW_DOWN_IO;
561 SLOW_DOWN_IO;
562 #endif
563
564 outb_p(ENISR_RDC, nic_base + EN0_ISR);
565
566 /* Now the normal output. */
567 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
568 outb_p(count >> 8, nic_base + EN0_RCNTHI);
569 outb_p(0x00, nic_base + EN0_RSARLO);
570 outb_p(start_page, nic_base + EN0_RSARHI);
571
572 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
573 if (ei_status.word16) {
574 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
575 } else {
576 outsb(NE_BASE + NE_DATAPORT, buf, count);
577 }
578
579 dma_start = jiffies;
580
581 #ifdef NE_SANITY_CHECK
582 /* This was for the ALPHA version only, but enough people have
583 been encountering problems so it is still here. */
584
585 if (ei_debug > 1) { /* DMA termination address check... */
586 int addr, tries = 20;
587 do {
588 int high = inb_p(nic_base + EN0_RSARHI);
589 int low = inb_p(nic_base + EN0_RSARLO);
590 addr = (high << 8) + low;
591 if ((start_page << 8) + count == addr)
592 break;
593 } while (--tries > 0);
594 if (tries <= 0) {
595 printk("%s: Tx packet transfer address mismatch,"
596 "%#4.4x (expected) vs. %#4.4x (actual).\n",
597 dev->name, (start_page << 8) + count, addr);
598 if (retries++ == 0)
599 goto retry;
600 }
601 }
602 #endif
603
604 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
605 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
606 printk("%s: timeout waiting for Tx RDC.\n", dev->name);
607 ne_reset_8390(dev);
608 NS8390_init(dev,1);
609 break;
610 }
611
612 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
613 ei_status.dmaing &= ~0x01;
614 return;
615 }
616
617
618 #ifdef MODULE
619 #define MAX_NE_CARDS 4 /* Max number of NE cards per module */
620 static struct net_device dev_ne[MAX_NE_CARDS];
621 static int io[MAX_NE_CARDS];
622 static int irq[MAX_NE_CARDS];
623 static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
624
625 #ifdef MODULE_PARM
626 MODULE_PARM(io, "1-" __MODULE_STRING(MAX_NE_CARDS) "i");
627 MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_NE_CARDS) "i");
628 MODULE_PARM(bad, "1-" __MODULE_STRING(MAX_NE_CARDS) "i");
629 #endif
630
631 /* Module code fixed by David Weinehall */
632
633 int init_module(void)
634 {
635 int this_dev, found = 0;
636
637 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
638 struct net_device *dev = &dev_ne[this_dev];
639 dev->irq = irq[this_dev];
640 dev->mem_end = bad[this_dev];
641 dev->base_addr = io[this_dev];
642 dev->init = ne2_probe;
643 if (register_netdev(dev) != 0) {
644 if (found != 0) return 0; /* Got at least one. */
645
646 printk(KERN_WARNING "ne2.c: No NE/2 card found.\n");
647 return -ENXIO;
648 }
649 found++;
650 }
651 return 0;
652 }
653
654 void cleanup_module(void)
655 {
656 int this_dev;
657
658 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
659 struct net_device *dev = &dev_ne[this_dev];
660 if (dev->priv != NULL) {
661 mca_mark_as_unused(ei_status.priv);
662 mca_set_adapter_procfn( ei_status.priv, NULL, NULL);
663 kfree(dev->priv);
664 free_irq(dev->irq, dev);
665 release_region(dev->base_addr, NE_IO_EXTENT);
666 unregister_netdev(dev);
667 }
668 }
669 }
670 #endif /* MODULE */
671
672 /*
673 * Local variables:
674 * compile-command: "gcc -DKERNEL -Wall -O6 -fomit-frame-pointer -I/usr/src/linux/net/tcp -c ne2.c"
675 * version-control: t
676 * kept-new-versions: 5
677 * End:
678 */
679
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