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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
[deliverable/linux.git] / drivers / net / ne-h8300.c
CommitLineData
1da177e4
LT		 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
19static 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>
ff5688ae 30#include <linux/jiffies.h>
1da177e4
LT		 31
32#include <asm/system.h>
33#include <asm/io.h>
34#include <asm/irq.h>
35
3470cb1d
AV		 36#define EI_SHIFT(x) (ei_local->reg_offset[x])
37
1da177e4
LT		 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
3470cb1d
AV		 57static 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
1da177e4
LT		 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
71static int ne_probe1(struct net_device *dev, int ioaddr);
72
73static int ne_open(struct net_device *dev);
74static int ne_close(struct net_device *dev);
75
76static void ne_reset_8390(struct net_device *dev);
77static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
78 int ring_page);
79static void ne_block_input(struct net_device *dev, int count,
80 struct sk_buff *skb, int ring_offset);
81static void ne_block_output(struct net_device *dev, const int count,
82 const unsigned char *buf, const int start_page);
83
84
85static u32 reg_offset[16];
86
87static int __init init_reg_offset(struct net_device *dev,unsigned long base_addr)
88{
89 struct ei_device *ei_local = (struct ei_device *) 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
e9edda69 96 for (i = 0; i < ARRAY_SIZE(reg_offset); i++)
1da177e4
LT		 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
106static int __initdata h8300_ne_count = 0;
107#ifdef CONFIG_H8300H_H8MAX
108static unsigned long __initdata h8300_ne_base[] = { 0x800600 };
109static int h8300_ne_irq[] = {EXT_IRQ4};
110#endif
111#ifdef CONFIG_H8300H_AKI3068NET
112static unsigned long __initdata h8300_ne_base[] = { 0x200000 };
113static int h8300_ne_irq[] = {EXT_IRQ5};
114#endif
115
116static inline int init_dev(struct net_device *dev)
117{
e9edda69 118 if (h8300_ne_count < ARRAY_SIZE(h8300_ne_base)) {
1da177e4
LT		 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
148static int __init do_ne_probe(struct net_device *dev)
149{
150 unsigned int base_addr = dev->base_addr;
151
1da177e4
LT		 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
161static 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
168struct net_device * __init ne_probe(int unit)
169{
dcd39c90 170 struct net_device *dev = alloc_ei_netdev();
1da177e4
LT		 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;
1da177e4 189 return dev;
1da177e4
LT		 190out:
191 free_netdev(dev);
192 return ERR_PTR(err);
193}
194#endif
195
dcd39c90
SH		 196static 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_change_mtu = eth_change_mtu,
206#ifdef CONFIG_NET_POLL_CONTROLLER
207 .ndo_poll_controller = ei_poll,
208#endif
209};
210
1da177e4
LT		 211static int __init ne_probe1(struct net_device *dev, int ioaddr)
212{
213 int i;
214 unsigned char SA_prom[16];
215 int wordlength = 2;
216 const char *name = NULL;
217 int start_page, stop_page;
218 int reg0, ret;
219 static unsigned version_printed;
220 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
221 unsigned char bus_width;
222
223 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
224 return -EBUSY;
225
226 reg0 = inb_p(ioaddr);
227 if (reg0 == 0xFF) {
228 ret = -ENODEV;
229 goto err_out;
230 }
231
232 /* Do a preliminary verification that we have a 8390. */
233 {
234 int regd;
235 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
236 regd = inb_p(ioaddr + EI_SHIFT(0x0d));
237 outb_p(0xff, ioaddr + EI_SHIFT(0x0d));
238 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
239 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
240 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
241 outb_p(reg0, ioaddr + EI_SHIFT(0));
242 outb_p(regd, ioaddr + EI_SHIFT(0x0d)); /* Restore the old values. */
243 ret = -ENODEV;
244 goto err_out;
245 }
246 }
247
248 if (ei_debug && version_printed++ == 0)
249 printk(KERN_INFO "%s", version1);
250
251 printk(KERN_INFO "NE*000 ethercard probe at %08x:", ioaddr);
252
253 /* Read the 16 bytes of station address PROM.
254 We must first initialize registers, similar to NS8390_init(eifdev, 0).
255 We can't reliably read the SAPROM address without this.
256 (I learned the hard way!). */
257 {
258 struct {unsigned char value, offset; } program_seq[] =
259 {
260 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
261 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
262 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
263 {0x00, EN0_RCNTHI},
264 {0x00, EN0_IMR}, /* Mask completion irq. */
265 {0xFF, EN0_ISR},
266 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
267 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
268 {32, EN0_RCNTLO},
269 {0x00, EN0_RCNTHI},
270 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
271 {0x00, EN0_RSARHI},
272 {E8390_RREAD+E8390_START, E8390_CMD},
273 };
274
ff8ac609 275 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
1da177e4
LT		 276 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
277
278 }
279 bus_width = *(volatile unsigned char *)ABWCR;
280 bus_width &= 1 << ((ioaddr >> 21) & 7);
281 ei_status.word16 = (bus_width == 0); /* temporary setting */
282 for(i = 0; i < 16 /*sizeof(SA_prom)*/; i++) {
283 SA_prom[i] = inb_p(ioaddr + NE_DATAPORT);
284 inb_p(ioaddr + NE_DATAPORT); /* dummy read */
285 }
286
287 start_page = NESM_START_PG;
288 stop_page = NESM_STOP_PG;
289
290 if (bus_width)
291 wordlength = 1;
292 else
293 outb_p(0x49, ioaddr + EN0_DCFG);
294
295 /* Set up the rest of the parameters. */
296 name = (wordlength == 2) ? "NE2000" : "NE1000";
297
298 if (! dev->irq) {
299 printk(" failed to detect IRQ line.\n");
300 ret = -EAGAIN;
301 goto err_out;
302 }
303
304 /* Snarf the interrupt now. There's no point in waiting since we cannot
305 share and the board will usually be enabled. */
3470cb1d 306 ret = request_irq(dev->irq, __ei_interrupt, 0, name, dev);
1da177e4
LT		 307 if (ret) {
308 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
309 goto err_out;
310 }
311
312 dev->base_addr = ioaddr;
313
0795af57 314 for(i = 0; i < ETHER_ADDR_LEN; i++)
1da177e4 315 dev->dev_addr[i] = SA_prom[i];
e174961c 316 printk(" %pM\n", dev->dev_addr);
1da177e4 317
0795af57 318 printk("%s: %s found at %#x, using IRQ %d.\n",
1da177e4
LT		 319 dev->name, name, ioaddr, dev->irq);
320
321 ei_status.name = name;
322 ei_status.tx_start_page = start_page;
323 ei_status.stop_page = stop_page;
324 ei_status.word16 = (wordlength == 2);
325
326 ei_status.rx_start_page = start_page + TX_PAGES;
327#ifdef PACKETBUF_MEMSIZE
328 /* Allow the packet buffer size to be overridden by know-it-alls. */
329 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
330#endif
331
332 ei_status.reset_8390 = &ne_reset_8390;
333 ei_status.block_input = &ne_block_input;
334 ei_status.block_output = &ne_block_output;
335 ei_status.get_8390_hdr = &ne_get_8390_hdr;
336 ei_status.priv = 0;
dcd39c90
SH		 337
338 dev->netdev_ops = &ne_netdev_ops;
339
3470cb1d 340 __NS8390_init(dev, 0);
1da177e4 341
b1fc5505 342 ret = register_netdev(dev);
343 if (ret)
344 goto out_irq;
345 return 0;
346out_irq:
347 free_irq(dev->irq, dev);
1da177e4
LT		 348err_out:
349 release_region(ioaddr, NE_IO_EXTENT);
350 return ret;
351}
352
353static int ne_open(struct net_device *dev)
354{
3470cb1d 355 __ei_open(dev);
1da177e4
LT		 356 return 0;
357}
358
359static int ne_close(struct net_device *dev)
360{
361 if (ei_debug > 1)
362 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
3470cb1d 363 __ei_close(dev);
1da177e4
LT		 364 return 0;
365}
366
367/* Hard reset the card. This used to pause for the same period that a
368 8390 reset command required, but that shouldn't be necessary. */
369
370static void ne_reset_8390(struct net_device *dev)
371{
372 unsigned long reset_start_time = jiffies;
373 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
374
375 if (ei_debug > 1)
376 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
377
378 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
379 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
380
381 ei_status.txing = 0;
382 ei_status.dmaing = 0;
383
384 /* This check _should_not_ be necessary, omit eventually. */
385 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
ff5688ae 386 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
1da177e4
LT		 387 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
388 break;
389 }
390 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
391}
392
393/* Grab the 8390 specific header. Similar to the block_input routine, but
394 we don't need to be concerned with ring wrap as the header will be at
395 the start of a page, so we optimize accordingly. */
396
397static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
398{
399 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
400 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
401
402 if (ei_status.dmaing)
403 {
404 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
405 "[DMAstat:%d][irqlock:%d].\n",
406 dev->name, ei_status.dmaing, ei_status.irqlock);
407 return;
408 }
409
410 ei_status.dmaing |= 0x01;
411 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, NE_BASE + NE_CMD);
412 outb_p(sizeof(struct e8390_pkt_hdr), NE_BASE + EN0_RCNTLO);
413 outb_p(0, NE_BASE + EN0_RCNTHI);
414 outb_p(0, NE_BASE + EN0_RSARLO); /* On page boundary */
415 outb_p(ring_page, NE_BASE + EN0_RSARHI);
416 outb_p(E8390_RREAD+E8390_START, NE_BASE + NE_CMD);
417
418 if (ei_status.word16) {
419 int len;
420 unsigned short *p = (unsigned short *)hdr;
421 for (len = sizeof(struct e8390_pkt_hdr)>>1; len > 0; len--)
422 *p++ = inw(NE_BASE + NE_DATAPORT);
423 } else
424 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
425
426 outb_p(ENISR_RDC, NE_BASE + EN0_ISR); /* Ack intr. */
427 ei_status.dmaing &= ~0x01;
428
429 le16_to_cpus(&hdr->count);
430}
431
432/* Block input and output, similar to the Crynwr packet driver. If you
433 are porting to a new ethercard, look at the packet driver source for hints.
434 The NEx000 doesn't share the on-board packet memory -- you have to put
435 the packet out through the "remote DMA" dataport using outb. */
436
437static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
438{
439 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
440#ifdef NE_SANITY_CHECK
441 int xfer_count = count;
442#endif
443 char *buf = skb->data;
444
445 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
446 if (ei_status.dmaing)
447 {
448 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
449 "[DMAstat:%d][irqlock:%d].\n",
450 dev->name, ei_status.dmaing, ei_status.irqlock);
451 return;
452 }
453 ei_status.dmaing |= 0x01;
454 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, NE_BASE + NE_CMD);
455 outb_p(count & 0xff, NE_BASE + EN0_RCNTLO);
456 outb_p(count >> 8, NE_BASE + EN0_RCNTHI);
457 outb_p(ring_offset & 0xff, NE_BASE + EN0_RSARLO);
458 outb_p(ring_offset >> 8, NE_BASE + EN0_RSARHI);
459 outb_p(E8390_RREAD+E8390_START, NE_BASE + NE_CMD);
460 if (ei_status.word16)
461 {
462 int len;
463 unsigned short *p = (unsigned short *)buf;
464 for (len = count>>1; len > 0; len--)
465 *p++ = inw(NE_BASE + NE_DATAPORT);
466 if (count & 0x01)
467 {
468 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
469#ifdef NE_SANITY_CHECK
470 xfer_count++;
471#endif
472 }
473 } else {
474 insb(NE_BASE + NE_DATAPORT, buf, count);
475 }
476
477#ifdef NE_SANITY_CHECK
478 /* This was for the ALPHA version only, but enough people have
479 been encountering problems so it is still here. If you see
480 this message you either 1) have a slightly incompatible clone
481 or 2) have noise/speed problems with your bus. */
482
483 if (ei_debug > 1)
484 {
485 /* DMA termination address check... */
486 int addr, tries = 20;
487 do {
488 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
489 -- it's broken for Rx on some cards! */
490 int high = inb_p(NE_BASE + EN0_RSARHI);
491 int low = inb_p(NE_BASE + EN0_RSARLO);
492 addr = (high << 8) + low;
493 if (((ring_offset + xfer_count) & 0xff) == low)
494 break;
495 } while (--tries > 0);
496 if (tries <= 0)
497 printk(KERN_WARNING "%s: RX transfer address mismatch,"
498 "%#4.4x (expected) vs. %#4.4x (actual).\n",
499 dev->name, ring_offset + xfer_count, addr);
500 }
501#endif
502 outb_p(ENISR_RDC, NE_BASE + EN0_ISR); /* Ack intr. */
503 ei_status.dmaing &= ~0x01;
504}
505
506static void ne_block_output(struct net_device *dev, int count,
507 const unsigned char *buf, const int start_page)
508{
509 struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
510 unsigned long dma_start;
511#ifdef NE_SANITY_CHECK
512 int retries = 0;
513#endif
514
515 /* Round the count up for word writes. Do we need to do this?
516 What effect will an odd byte count have on the 8390?
517 I should check someday. */
518
519 if (ei_status.word16 && (count & 0x01))
520 count++;
521
522 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
523 if (ei_status.dmaing)
524 {
525 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
526 "[DMAstat:%d][irqlock:%d]\n",
527 dev->name, ei_status.dmaing, ei_status.irqlock);
528 return;
529 }
530 ei_status.dmaing |= 0x01;
531 /* We should already be in page 0, but to be safe... */
532 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, NE_BASE + NE_CMD);
533
534#ifdef NE_SANITY_CHECK
535retry:
536#endif
537
538#ifdef NE8390_RW_BUGFIX
539 /* Handle the read-before-write bug the same way as the
540 Crynwr packet driver -- the NatSemi method doesn't work.
541 Actually this doesn't always work either, but if you have
542 problems with your NEx000 this is better than nothing! */
543
544 outb_p(0x42, NE_BASE + EN0_RCNTLO);
545 outb_p(0x00, NE_BASE + EN0_RCNTHI);
546 outb_p(0x42, NE_BASE + EN0_RSARLO);
547 outb_p(0x00, NE_BASE + EN0_RSARHI);
548 outb_p(E8390_RREAD+E8390_START, NE_BASE + NE_CMD);
549 /* Make certain that the dummy read has occurred. */
550 udelay(6);
551#endif
552
553 outb_p(ENISR_RDC, NE_BASE + EN0_ISR);
554
555 /* Now the normal output. */
556 outb_p(count & 0xff, NE_BASE + EN0_RCNTLO);
557 outb_p(count >> 8, NE_BASE + EN0_RCNTHI);
558 outb_p(0x00, NE_BASE + EN0_RSARLO);
559 outb_p(start_page, NE_BASE + EN0_RSARHI);
560
561 outb_p(E8390_RWRITE+E8390_START, NE_BASE + NE_CMD);
562 if (ei_status.word16) {
563 int len;
564 unsigned short *p = (unsigned short *)buf;
565 for (len = count>>1; len > 0; len--)
566 outw(*p++, NE_BASE + NE_DATAPORT);
567 } else {
568 outsb(NE_BASE + NE_DATAPORT, buf, count);
569 }
570
571 dma_start = jiffies;
572
573#ifdef NE_SANITY_CHECK
574 /* This was for the ALPHA version only, but enough people have
575 been encountering problems so it is still here. */
576
577 if (ei_debug > 1)
578 {
579 /* DMA termination address check... */
580 int addr, tries = 20;
581 do {
582 int high = inb_p(NE_BASE + EN0_RSARHI);
583 int low = inb_p(NE_BASE + EN0_RSARLO);
584 addr = (high << 8) + low;
585 if ((start_page << 8) + count == addr)
586 break;
587 } while (--tries > 0);
588
589 if (tries <= 0)
590 {
591 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
592 "%#4.4x (expected) vs. %#4.4x (actual).\n",
593 dev->name, (start_page << 8) + count, addr);
594 if (retries++ == 0)
595 goto retry;
596 }
597 }
598#endif
599
600 while ((inb_p(NE_BASE + EN0_ISR) & ENISR_RDC) == 0)
ff5688ae 601 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
1da177e4
LT		 602 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
603 ne_reset_8390(dev);
3470cb1d 604 __NS8390_init(dev,1);
1da177e4
LT		 605 break;
606 }
607
608 outb_p(ENISR_RDC, NE_BASE + EN0_ISR); /* Ack intr. */
609 ei_status.dmaing &= ~0x01;
610 return;
611}
612
6aa20a22 613
1da177e4
LT		 614#ifdef MODULE
615#define MAX_NE_CARDS 1 /* Max number of NE cards per module */
616static struct net_device *dev_ne[MAX_NE_CARDS];
617static int io[MAX_NE_CARDS];
618static int irq[MAX_NE_CARDS];
619static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
620
8d3b33f6
RR		 621module_param_array(io, int, NULL, 0);
622module_param_array(irq, int, NULL, 0);
623module_param_array(bad, int, NULL, 0);
1da177e4
LT		 624MODULE_PARM_DESC(io, "I/O base address(es)");
625MODULE_PARM_DESC(irq, "IRQ number(s)");
626MODULE_DESCRIPTION("H8/300 NE2000 Ethernet driver");
627MODULE_LICENSE("GPL");
628
629/* This is set up so that no ISA autoprobe takes place. We can't guarantee
630that the ne2k probe is the last 8390 based probe to take place (as it
631is at boot) and so the probe will get confused by any other 8390 cards.
632ISA device autoprobes on a running machine are not recommended anyway. */
633
634int 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++) {
dcd39c90 640 struct net_device *dev = alloc_ei_netdev();
1da177e4
LT		 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) {
b1fc5505 654 dev_ne[found++] = dev;
655 continue;
1da177e4
LT		 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
672void 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 */
Linux kernel - Deliverables
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