1 /* ne-h8300.c: A NE2000 clone on H8/300 driver for linux. */
2 /*
3 original ne.c
4 Written 1992-94 by Donald Becker.
5
6 Copyright 1993 United States Government as represented by the
7 Director, National Security Agency.
8
9 This software may be used and distributed according to the terms
10 of the GNU General Public License, incorporated herein by reference.
11
12 The author may be reached as becker@scyld.com, or C/O
13 Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
14
15 H8/300 modified
16 Yoshinori Sato <ysato@users.sourceforge.jp>
17 */
18
19 static const char version1[] =
20 "ne-h8300.c:v1.00 2004/04/11 ysato\n";
21
22 #include <linux/module.h>
23 #include <linux/kernel.h>
24 #include <linux/errno.h>
25 #include <linux/init.h>
26 #include <linux/interrupt.h>
27 #include <linux/delay.h>
28 #include <linux/netdevice.h>
29 #include <linux/etherdevice.h>
30 #include <linux/jiffies.h>
31
32 #include <asm/system.h>
33 #include <asm/io.h>
34 #include <asm/irq.h>
35
36 #define EI_SHIFT(x) (ei_local->reg_offset[x])
37
38 #include "8390.h"
39
40 #define DRV_NAME "ne-h8300"
41
42 /* Some defines that people can play with if so inclined. */
43
44 /* Do we perform extra sanity checks on stuff ? */
45 /* #define NE_SANITY_CHECK */
46
47 /* Do we implement the read before write bugfix ? */
48 /* #define NE_RW_BUGFIX */
49
50 /* Do we have a non std. amount of memory? (in units of 256 byte pages) */
51 /* #define PACKETBUF_MEMSIZE 0x40 */
52
53 /* A zero-terminated list of I/O addresses to be probed at boot. */
54
55 /* ---- No user-serviceable parts below ---- */
56
57 static const char version[] =
58 "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
59
60 #include "lib8390.c"
61
62 #define NE_BASE (dev->base_addr)
63 #define NE_CMD 0x00
64 #define NE_DATAPORT (ei_status.word16?0x20:0x10) /* NatSemi-defined port window offset. */
65 #define NE_RESET (ei_status.word16?0x3f:0x1f) /* Issue a read to reset, a write to clear. */
66 #define NE_IO_EXTENT (ei_status.word16?0x40:0x20)
67
68 #define NESM_START_PG 0x40 /* First page of TX buffer */
69 #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
70
71 static int ne_probe1(struct net_device *dev, int ioaddr);
72
73 static int ne_open(struct net_device *dev);
74 static int ne_close(struct net_device *dev);
75
76 static void ne_reset_8390(struct net_device *dev);
77 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
78 int ring_page);
79 static void ne_block_input(struct net_device *dev, int count,
80 struct sk_buff *skb, int ring_offset);
81 static void ne_block_output(struct net_device *dev, const int count,
82 const unsigned char *buf, const int start_page);
83
84
85 static u32 reg_offset[16];
86
init_reg_offset(struct net_device * dev,unsigned long base_addr)87 static int __init init_reg_offset(struct net_device *dev,unsigned long base_addr)
88 {
89 struct ei_device *ei_local = netdev_priv(dev);
90 int i;
91 unsigned char bus_width;
92
93 bus_width = *(volatile unsigned char *)ABWCR;
94 bus_width &= 1 << ((base_addr >> 21) & 7);
95
96 for (i = 0; i < ARRAY_SIZE(reg_offset); i++)
97 if (bus_width == 0)
98 reg_offset[i] = i * 2 + 1;
99 else
100 reg_offset[i] = i;
101
102 ei_local->reg_offset = reg_offset;
103 return 0;
104 }
105
106 static int __initdata h8300_ne_count = 0;
107 #ifdef CONFIG_H8300H_H8MAX
108 static unsigned long __initdata h8300_ne_base[] = { 0x800600 };
109 static int h8300_ne_irq[] = {EXT_IRQ4};
110 #endif
111 #ifdef CONFIG_H8300H_AKI3068NET
112 static unsigned long __initdata h8300_ne_base[] = { 0x200000 };
113 static int h8300_ne_irq[] = {EXT_IRQ5};
114 #endif
115
init_dev(struct net_device * dev)116 static inline int init_dev(struct net_device *dev)
117 {
118 if (h8300_ne_count < ARRAY_SIZE(h8300_ne_base)) {
119 dev->base_addr = h8300_ne_base[h8300_ne_count];
120 dev->irq = h8300_ne_irq[h8300_ne_count];
121 h8300_ne_count++;
122 return 0;
123 } else
124 return -ENODEV;
125 }
126
127 /* Probe for various non-shared-memory ethercards.
128
129 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
130 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
131 the SAPROM, while other supposed NE2000 clones must be detected by their
132 SA prefix.
133
134 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
135 mode results in doubled values, which can be detected and compensated for.
136
137 The probe is also responsible for initializing the card and filling
138 in the 'dev' and 'ei_status' structures.
139
140 We use the minimum memory size for some ethercard product lines, iff we can't
141 distinguish models. You can increase the packet buffer size by setting
142 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
143 E1010 starts at 0x100 and ends at 0x2000.
144 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
145 E2010 starts at 0x100 and ends at 0x4000.
146 E2010-x starts at 0x100 and ends at 0xffff. */
147
do_ne_probe(struct net_device * dev)148 static int __init do_ne_probe(struct net_device *dev)
149 {
150 unsigned int base_addr = dev->base_addr;
151
152 /* First check any supplied i/o locations. User knows best. <cough> */
153 if (base_addr > 0x1ff) /* Check a single specified location. */
154 return ne_probe1(dev, base_addr);
155 else if (base_addr != 0) /* Don't probe at all. */
156 return -ENXIO;
157
158 return -ENODEV;
159 }
160
cleanup_card(struct net_device * dev)161 static void cleanup_card(struct net_device *dev)
162 {
163 free_irq(dev->irq, dev);
164 release_region(dev->base_addr, NE_IO_EXTENT);
165 }
166
167 #ifndef MODULE
ne_probe(int unit)168 struct net_device * __init ne_probe(int unit)
169 {
170 struct net_device *dev = ____alloc_ei_netdev(0);
171 int err;
172
173 if (!dev)
174 return ERR_PTR(-ENOMEM);
175
176 if (init_dev(dev))
177 return ERR_PTR(-ENODEV);
178
179 sprintf(dev->name, "eth%d", unit);
180 netdev_boot_setup_check(dev);
181
182 err = init_reg_offset(dev, dev->base_addr);
183 if (err)
184 goto out;
185
186 err = do_ne_probe(dev);
187 if (err)
188 goto out;
189 return dev;
190 out:
191 free_netdev(dev);
192 return ERR_PTR(err);
193 }
194 #endif
195
196 static const struct net_device_ops ne_netdev_ops = {
197 .ndo_open = ne_open,
198 .ndo_stop = ne_close,
199
200 .ndo_start_xmit = __ei_start_xmit,
201 .ndo_tx_timeout = __ei_tx_timeout,
202 .ndo_get_stats = __ei_get_stats,
203 .ndo_set_multicast_list = __ei_set_multicast_list,
204 .ndo_validate_addr = eth_validate_addr,
205 .ndo_set_mac_address = eth_mac_addr,
206 .ndo_change_mtu = eth_change_mtu,
207 #ifdef CONFIG_NET_POLL_CONTROLLER
208 .ndo_poll_controller = __ei_poll,
209 #endif
210 };
211
ne_probe1(struct net_device * dev,int ioaddr)212 static int __init ne_probe1(struct net_device *dev, int ioaddr)
213 {
214 int i;
215 unsigned char SA_prom[16];
216 int wordlength = 2;
217 const char *name = NULL;
218 int start_page, stop_page;
219 int reg0, ret;
220 static unsigned version_printed;
221 struct ei_device *ei_local = netdev_priv(dev);
222 unsigned char bus_width;
223
224 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
225 return -EBUSY;
226
227 reg0 = inb_p(ioaddr);
228 if (reg0 == 0xFF) {
229 ret = -ENODEV;
230 goto err_out;
231 }
232
233 /* Do a preliminary verification that we have a 8390. */
234 {
235 int regd;
236 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
237 regd = inb_p(ioaddr + EI_SHIFT(0x0d));
238 outb_p(0xff, ioaddr + EI_SHIFT(0x0d));
239 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
240 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
241 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
242 outb_p(reg0, ioaddr + EI_SHIFT(0));
243 outb_p(regd, ioaddr + EI_SHIFT(0x0d)); /* Restore the old values. */
244 ret = -ENODEV;
245 goto err_out;
246 }
247 }
248
249 if (ei_debug && version_printed++ == 0)
250 printk(KERN_INFO "%s", version1);
251
252 printk(KERN_INFO "NE*000 ethercard probe at %08x:", ioaddr);
253
254 /* Read the 16 bytes of station address PROM.
255 We must first initialize registers, similar to NS8390_init(eifdev, 0).
256 We can't reliably read the SAPROM address without this.
257 (I learned the hard way!). */
258 {
259 struct {unsigned char value, offset; } program_seq[] =
260 {
261 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
262 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
263 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
264 {0x00, EN0_RCNTHI},
265 {0x00, EN0_IMR}, /* Mask completion irq. */
266 {0xFF, EN0_ISR},
267 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
268 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
269 {32, EN0_RCNTLO},
270 {0x00, EN0_RCNTHI},
271 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
272 {0x00, EN0_RSARHI},
273 {E8390_RREAD+E8390_START, E8390_CMD},
274 };
275
276 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
277 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
278
279 }
280 bus_width = *(volatile unsigned char *)ABWCR;
281 bus_width &= 1 << ((ioaddr >> 21) & 7);
282 ei_status.word16 = (bus_width == 0); /* temporary setting */
283 for(i = 0; i < 16 /*sizeof(SA_prom)*/; i++) {
284 SA_prom[i] = inb_p(ioaddr + NE_DATAPORT);
285 inb_p(ioaddr + NE_DATAPORT); /* dummy read */
286 }
287
288 start_page = NESM_START_PG;
289 stop_page = NESM_STOP_PG;
290
291 if (bus_width)
292 wordlength = 1;
293 else
294 outb_p(0x49, ioaddr + EN0_DCFG);
295
296 /* Set up the rest of the parameters. */
297 name = (wordlength == 2) ? "NE2000" : "NE1000";
298
299 if (! dev->irq) {
300 printk(" failed to detect IRQ line.\n");
301 ret = -EAGAIN;
302 goto err_out;
303 }
304
305 /* Snarf the interrupt now. There's no point in waiting since we cannot
306 share and the board will usually be enabled. */
307 ret = request_irq(dev->irq, __ei_interrupt, 0, name, dev);
308 if (ret) {
309 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
310 goto err_out;
311 }
312
313 dev->base_addr = ioaddr;
314
315 for(i = 0; i < ETHER_ADDR_LEN; i++)
316 dev->dev_addr[i] = SA_prom[i];
317 printk(" %pM\n", dev->dev_addr);
318
319 printk("%s: %s found at %#x, using IRQ %d.\n",
320 dev->name, name, ioaddr, dev->irq);
321
322 ei_status.name = name;
323 ei_status.tx_start_page = start_page;
324 ei_status.stop_page = stop_page;
325 ei_status.word16 = (wordlength == 2);
326
327 ei_status.rx_start_page = start_page + TX_PAGES;
328 #ifdef PACKETBUF_MEMSIZE
329 /* Allow the packet buffer size to be overridden by know-it-alls. */
330 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
331 #endif
332
333 ei_status.reset_8390 = &ne_reset_8390;
334 ei_status.block_input = &ne_block_input;
335 ei_status.block_output = &ne_block_output;
336 ei_status.get_8390_hdr = &ne_get_8390_hdr;
337 ei_status.priv = 0;
338
339 dev->netdev_ops = &ne_netdev_ops;
340
341 __NS8390_init(dev, 0);
342
343 ret = register_netdev(dev);
344 if (ret)
345 goto out_irq;
346 return 0;
347 out_irq:
348 free_irq(dev->irq, dev);
349 err_out:
350 release_region(ioaddr, NE_IO_EXTENT);
351 return ret;
352 }
353
ne_open(struct net_device * dev)354 static int ne_open(struct net_device *dev)
355 {
356 __ei_open(dev);
357 return 0;
358 }
359
ne_close(struct net_device * dev)360 static int ne_close(struct net_device *dev)
361 {
362 if (ei_debug > 1)
363 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
364 __ei_close(dev);
365 return 0;
366 }
367
368 /* Hard reset the card. This used to pause for the same period that a
369 8390 reset command required, but that shouldn't be necessary. */
370
ne_reset_8390(struct net_device * dev)371 static void ne_reset_8390(struct net_device *dev)
372 {
373 unsigned long reset_start_time = jiffies;
374 struct ei_device *ei_local = netdev_priv(dev);
375
376 if (ei_debug > 1)
377 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
378
379 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
380 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
381
382 ei_status.txing = 0;
383 ei_status.dmaing = 0;
384
385 /* This check _should_not_ be necessary, omit eventually. */
386 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
387 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
388 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
389 break;
390 }
391 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
392 }
393
394 /* Grab the 8390 specific header. Similar to the block_input routine, but
395 we don't need to be concerned with ring wrap as the header will be at
396 the start of a page, so we optimize accordingly. */
397
ne_get_8390_hdr(struct net_device * dev,struct e8390_pkt_hdr * hdr,int ring_page)398 static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
399 {
400 struct ei_device *ei_local = netdev_priv(dev);
401 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
402
403 if (ei_status.dmaing)
404 {
405 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
406 "[DMAstat:%d][irqlock:%d].\n",
407 dev->name, ei_status.dmaing, ei_status.irqlock);
408 return;
409 }
410
411 ei_status.dmaing |= 0x01;
412 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, NE_BASE + NE_CMD);
413 outb_p(sizeof(struct e8390_pkt_hdr), NE_BASE + EN0_RCNTLO);
414 outb_p(0, NE_BASE + EN0_RCNTHI);
415 outb_p(0, NE_BASE + EN0_RSARLO); /* On page boundary */
416 outb_p(ring_page, NE_BASE + EN0_RSARHI);
417 outb_p(E8390_RREAD+E8390_START, NE_BASE + NE_CMD);
418
419 if (ei_status.word16) {
420 int len;
421 unsigned short *p = (unsigned short *)hdr;
422 for (len = sizeof(struct e8390_pkt_hdr)>>1; len > 0; len--)
423 *p++ = inw(NE_BASE + NE_DATAPORT);
424 } else
425 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
426
427 outb_p(ENISR_RDC, NE_BASE + EN0_ISR); /* Ack intr. */
428 ei_status.dmaing &= ~0x01;
429
430 le16_to_cpus(&hdr->count);
431 }
432
433 /* Block input and output, similar to the Crynwr packet driver. If you
434 are porting to a new ethercard, look at the packet driver source for hints.
435 The NEx000 doesn't share the on-board packet memory -- you have to put
436 the packet out through the "remote DMA" dataport using outb. */
437
ne_block_input(struct net_device * dev,int count,struct sk_buff * skb,int ring_offset)438 static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
439 {
440 struct ei_device *ei_local = netdev_priv(dev);
441 #ifdef NE_SANITY_CHECK
442 int xfer_count = count;
443 #endif
444 char *buf = skb->data;
445
446 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
447 if (ei_status.dmaing)
448 {
449 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
450 "[DMAstat:%d][irqlock:%d].\n",
451 dev->name, ei_status.dmaing, ei_status.irqlock);
452 return;
453 }
454 ei_status.dmaing |= 0x01;
455 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, NE_BASE + NE_CMD);
456 outb_p(count & 0xff, NE_BASE + EN0_RCNTLO);
457 outb_p(count >> 8, NE_BASE + EN0_RCNTHI);
458 outb_p(ring_offset & 0xff, NE_BASE + EN0_RSARLO);
459 outb_p(ring_offset >> 8, NE_BASE + EN0_RSARHI);
460 outb_p(E8390_RREAD+E8390_START, NE_BASE + NE_CMD);
461 if (ei_status.word16)
462 {
463 int len;
464 unsigned short *p = (unsigned short *)buf;
465 for (len = count>>1; len > 0; len--)
466 *p++ = inw(NE_BASE + NE_DATAPORT);
467 if (count & 0x01)
468 {
469 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
470 #ifdef NE_SANITY_CHECK
471 xfer_count++;
472 #endif
473 }
474 } else {
475 insb(NE_BASE + NE_DATAPORT, buf, count);
476 }
477
478 #ifdef NE_SANITY_CHECK
479 /* This was for the ALPHA version only, but enough people have
480 been encountering problems so it is still here. If you see
481 this message you either 1) have a slightly incompatible clone
482 or 2) have noise/speed problems with your bus. */
483
484 if (ei_debug > 1)
485 {
486 /* DMA termination address check... */
487 int addr, tries = 20;
488 do {
489 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
490 -- it's broken for Rx on some cards! */
491 int high = inb_p(NE_BASE + EN0_RSARHI);
492 int low = inb_p(NE_BASE + EN0_RSARLO);
493 addr = (high << 8) + low;
494 if (((ring_offset + xfer_count) & 0xff) == low)
495 break;
496 } while (--tries > 0);
497 if (tries <= 0)
498 printk(KERN_WARNING "%s: RX transfer address mismatch,"
499 "%#4.4x (expected) vs. %#4.4x (actual).\n",
500 dev->name, ring_offset + xfer_count, addr);
501 }
502 #endif
503 outb_p(ENISR_RDC, NE_BASE + EN0_ISR); /* Ack intr. */
504 ei_status.dmaing &= ~0x01;
505 }
506
ne_block_output(struct net_device * dev,int count,const unsigned char * buf,const int start_page)507 static void ne_block_output(struct net_device *dev, int count,
508 const unsigned char *buf, const int start_page)
509 {
510 struct ei_device *ei_local = netdev_priv(dev);
511 unsigned long dma_start;
512 #ifdef NE_SANITY_CHECK
513 int retries = 0;
514 #endif
515
516 /* Round the count up for word writes. Do we need to do this?
517 What effect will an odd byte count have on the 8390?
518 I should check someday. */
519
520 if (ei_status.word16 && (count & 0x01))
521 count++;
522
523 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
524 if (ei_status.dmaing)
525 {
526 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
527 "[DMAstat:%d][irqlock:%d]\n",
528 dev->name, ei_status.dmaing, ei_status.irqlock);
529 return;
530 }
531 ei_status.dmaing |= 0x01;
532 /* We should already be in page 0, but to be safe... */
533 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, NE_BASE + NE_CMD);
534
535 #ifdef NE_SANITY_CHECK
536 retry:
537 #endif
538
539 #ifdef NE8390_RW_BUGFIX
540 /* Handle the read-before-write bug the same way as the
541 Crynwr packet driver -- the NatSemi method doesn't work.
542 Actually this doesn't always work either, but if you have
543 problems with your NEx000 this is better than nothing! */
544
545 outb_p(0x42, NE_BASE + EN0_RCNTLO);
546 outb_p(0x00, NE_BASE + EN0_RCNTHI);
547 outb_p(0x42, NE_BASE + EN0_RSARLO);
548 outb_p(0x00, NE_BASE + EN0_RSARHI);
549 outb_p(E8390_RREAD+E8390_START, NE_BASE + NE_CMD);
550 /* Make certain that the dummy read has occurred. */
551 udelay(6);
552 #endif
553
554 outb_p(ENISR_RDC, NE_BASE + EN0_ISR);
555
556 /* Now the normal output. */
557 outb_p(count & 0xff, NE_BASE + EN0_RCNTLO);
558 outb_p(count >> 8, NE_BASE + EN0_RCNTHI);
559 outb_p(0x00, NE_BASE + EN0_RSARLO);
560 outb_p(start_page, NE_BASE + EN0_RSARHI);
561
562 outb_p(E8390_RWRITE+E8390_START, NE_BASE + NE_CMD);
563 if (ei_status.word16) {
564 int len;
565 unsigned short *p = (unsigned short *)buf;
566 for (len = count>>1; len > 0; len--)
567 outw(*p++, NE_BASE + NE_DATAPORT);
568 } else {
569 outsb(NE_BASE + NE_DATAPORT, buf, count);
570 }
571
572 dma_start = jiffies;
573
574 #ifdef NE_SANITY_CHECK
575 /* This was for the ALPHA version only, but enough people have
576 been encountering problems so it is still here. */
577
578 if (ei_debug > 1)
579 {
580 /* DMA termination address check... */
581 int addr, tries = 20;
582 do {
583 int high = inb_p(NE_BASE + EN0_RSARHI);
584 int low = inb_p(NE_BASE + EN0_RSARLO);
585 addr = (high << 8) + low;
586 if ((start_page << 8) + count == addr)
587 break;
588 } while (--tries > 0);
589
590 if (tries <= 0)
591 {
592 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
593 "%#4.4x (expected) vs. %#4.4x (actual).\n",
594 dev->name, (start_page << 8) + count, addr);
595 if (retries++ == 0)
596 goto retry;
597 }
598 }
599 #endif
600
601 while ((inb_p(NE_BASE + EN0_ISR) & ENISR_RDC) == 0)
602 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
603 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
604 ne_reset_8390(dev);
605 __NS8390_init(dev,1);
606 break;
607 }
608
609 outb_p(ENISR_RDC, NE_BASE + EN0_ISR); /* Ack intr. */
610 ei_status.dmaing &= ~0x01;
611 }
612
613
614 #ifdef MODULE
615 #define MAX_NE_CARDS 1 /* Max number of NE cards per module */
616 static struct net_device *dev_ne[MAX_NE_CARDS];
617 static int io[MAX_NE_CARDS];
618 static int irq[MAX_NE_CARDS];
619 static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
620
621 module_param_array(io, int, NULL, 0);
622 module_param_array(irq, int, NULL, 0);
623 module_param_array(bad, int, NULL, 0);
624 MODULE_PARM_DESC(io, "I/O base address(es)");
625 MODULE_PARM_DESC(irq, "IRQ number(s)");
626 MODULE_DESCRIPTION("H8/300 NE2000 Ethernet driver");
627 MODULE_LICENSE("GPL");
628
629 /* This is set up so that no ISA autoprobe takes place. We can't guarantee
630 that the ne2k probe is the last 8390 based probe to take place (as it
631 is at boot) and so the probe will get confused by any other 8390 cards.
632 ISA device autoprobes on a running machine are not recommended anyway. */
633
init_module(void)634 int init_module(void)
635 {
636 int this_dev, found = 0;
637 int err;
638
639 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
640 struct net_device *dev = ____alloc_ei_netdev(0);
641 if (!dev)
642 break;
643 if (io[this_dev]) {
644 dev->irq = irq[this_dev];
645 dev->mem_end = bad[this_dev];
646 dev->base_addr = io[this_dev];
647 } else {
648 dev->base_addr = h8300_ne_base[this_dev];
649 dev->irq = h8300_ne_irq[this_dev];
650 }
651 err = init_reg_offset(dev, dev->base_addr);
652 if (!err) {
653 if (do_ne_probe(dev) == 0) {
654 dev_ne[found++] = dev;
655 continue;
656 }
657 }
658 free_netdev(dev);
659 if (found)
660 break;
661 if (io[this_dev] != 0)
662 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", dev->base_addr);
663 else
664 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
665 return -ENXIO;
666 }
667 if (found)
668 return 0;
669 return -ENODEV;
670 }
671
cleanup_module(void)672 void cleanup_module(void)
673 {
674 int this_dev;
675
676 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
677 struct net_device *dev = dev_ne[this_dev];
678 if (dev) {
679 unregister_netdev(dev);
680 cleanup_card(dev);
681 free_netdev(dev);
682 }
683 }
684 }
685 #endif /* MODULE */
686