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[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / ne.c
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1da177e4
LT		 1/* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */
2/*
3 Written 1992-94 by Donald Becker.
4
5 Copyright 1993 United States Government as represented by the
6 Director, National Security Agency.
7
8 This software may be used and distributed according to the terms
9 of the GNU General Public License, incorporated herein by reference.
10
11 The author may be reached as becker@scyld.com, or C/O
12 Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
13
14 This driver should work with many programmed-I/O 8390-based ethernet
15 boards. Currently it supports the NE1000, NE2000, many clones,
16 and some Cabletron products.
17
18 Changelog:
19
20 Paul Gortmaker : use ENISR_RDC to monitor Tx PIO uploads, made
21 sanity checks and bad clone support optional.
22 Paul Gortmaker : new reset code, reset card after probe at boot.
23 Paul Gortmaker : multiple card support for module users.
24 Paul Gortmaker : Support for PCI ne2k clones, similar to lance.c
25 Paul Gortmaker : Allow users with bad cards to avoid full probe.
26 Paul Gortmaker : PCI probe changes, more PCI cards supported.
27 rjohnson@analogic.com : Changed init order so an interrupt will only
28 occur after memory is allocated for dev->priv. Deallocated memory
29 last in cleanup_modue()
30 Richard Guenther : Added support for ISAPnP cards
31 Paul Gortmaker : Discontinued PCI support - use ne2k-pci.c instead.
32 Hayato Fujiwara : Add m32r support.
33
34*/
35
36/* Routines for the NatSemi-based designs (NE[12]000). */
37
38static const char version1[] =
39"ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)\n";
40static const char version2[] =
41"Last modified Nov 1, 2000 by Paul Gortmaker\n";
42
43
44#include <linux/module.h>
45#include <linux/kernel.h>
46#include <linux/errno.h>
47#include <linux/isapnp.h>
48#include <linux/init.h>
49#include <linux/interrupt.h>
50#include <linux/delay.h>
51#include <linux/netdevice.h>
52#include <linux/etherdevice.h>
53
54#include <asm/system.h>
55#include <asm/io.h>
56
57#include "8390.h"
58
59#define DRV_NAME "ne"
60
61/* Some defines that people can play with if so inclined. */
62
63/* Do we support clones that don't adhere to 14,15 of the SAprom ? */
64#define SUPPORT_NE_BAD_CLONES
65
66/* Do we perform extra sanity checks on stuff ? */
67/* #define NE_SANITY_CHECK */
68
69/* Do we implement the read before write bugfix ? */
70/* #define NE_RW_BUGFIX */
71
72/* Do we have a non std. amount of memory? (in units of 256 byte pages) */
73/* #define PACKETBUF_MEMSIZE 0x40 */
74
75/* A zero-terminated list of I/O addresses to be probed at boot. */
76#ifndef MODULE
77static unsigned int netcard_portlist[] __initdata = {
78 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
79};
80#endif
81
82static struct isapnp_device_id isapnp_clone_list[] __initdata = {
83 { ISAPNP_CARD_ID('A','X','E',0x2011),
84 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
85 (long) "NetGear EA201" },
86 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
87 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
88 (long) "NN NE2000" },
89 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
90 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
91 (long) "Generic PNP" },
92 { } /* terminate list */
93};
94
95MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
96
97#ifdef SUPPORT_NE_BAD_CLONES
98/* A list of bad clones that we none-the-less recognize. */
99static struct { const char *name8, *name16; unsigned char SAprefix[4];}
100bad_clone_list[] __initdata = {
101 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
102 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
103 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
104 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
105 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
106 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
107 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
108 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
109 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
110 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
111 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
112 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
113 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
114 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
115 {NULL,}
116};
117#endif
118
119/* ---- No user-serviceable parts below ---- */
120
121#define NE_BASE (dev->base_addr)
122#define NE_CMD 0x00
123#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
124#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
125#define NE_IO_EXTENT 0x20
126
127#define NE1SM_START_PG 0x20 /* First page of TX buffer */
128#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
129#define NESM_START_PG 0x40 /* First page of TX buffer */
130#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
131
132#ifdef CONFIG_PLAT_MAPPI
133# define DCR_VAL 0x4b
134#elif CONFIG_PLAT_OAKS32R
135# define DCR_VAL 0x48
136#else
137# define DCR_VAL 0x49
138#endif
139
140static int ne_probe1(struct net_device *dev, int ioaddr);
141static int ne_probe_isapnp(struct net_device *dev);
142
143static int ne_open(struct net_device *dev);
144static int ne_close(struct net_device *dev);
145
146static void ne_reset_8390(struct net_device *dev);
147static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
148 int ring_page);
149static void ne_block_input(struct net_device *dev, int count,
150 struct sk_buff *skb, int ring_offset);
151static void ne_block_output(struct net_device *dev, const int count,
152 const unsigned char *buf, const int start_page);
153
154\f
155/* Probe for various non-shared-memory ethercards.
156
157 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
158 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
159 the SAPROM, while other supposed NE2000 clones must be detected by their
160 SA prefix.
161
162 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
163 mode results in doubled values, which can be detected and compensated for.
164
165 The probe is also responsible for initializing the card and filling
166 in the 'dev' and 'ei_status' structures.
167
168 We use the minimum memory size for some ethercard product lines, iff we can't
169 distinguish models. You can increase the packet buffer size by setting
170 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
171 E1010 starts at 0x100 and ends at 0x2000.
172 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
173 E2010 starts at 0x100 and ends at 0x4000.
174 E2010-x starts at 0x100 and ends at 0xffff. */
175
176static int __init do_ne_probe(struct net_device *dev)
177{
178 unsigned int base_addr = dev->base_addr;
179#ifndef MODULE
180 int orig_irq = dev->irq;
181#endif
182
183 SET_MODULE_OWNER(dev);
184
185 /* First check any supplied i/o locations. User knows best. <cough> */
186 if (base_addr > 0x1ff) /* Check a single specified location. */
187 return ne_probe1(dev, base_addr);
188 else if (base_addr != 0) /* Don't probe at all. */
189 return -ENXIO;
190
191 /* Then look for any installed ISAPnP clones */
192 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
193 return 0;
194
195#ifndef MODULE
196 /* Last resort. The semi-risky ISA auto-probe. */
197 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
198 int ioaddr = netcard_portlist[base_addr];
199 dev->irq = orig_irq;
200 if (ne_probe1(dev, ioaddr) == 0)
201 return 0;
202 }
203#endif
204
205 return -ENODEV;
206}
207
208static void cleanup_card(struct net_device *dev)
209{
210 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
211 if (idev)
212 pnp_device_detach(idev);
213 free_irq(dev->irq, dev);
214 release_region(dev->base_addr, NE_IO_EXTENT);
215}
216
217#ifndef MODULE
218struct net_device * __init ne_probe(int unit)
219{
220 struct net_device *dev = alloc_ei_netdev();
221 int err;
222
223 if (!dev)
224 return ERR_PTR(-ENOMEM);
225
226 sprintf(dev->name, "eth%d", unit);
227 netdev_boot_setup_check(dev);
228
229 err = do_ne_probe(dev);
230 if (err)
231 goto out;
1da177e4 232 return dev;
1da177e4
LT		 233out:
234 free_netdev(dev);
235 return ERR_PTR(err);
236}
237#endif
238
239static int __init ne_probe_isapnp(struct net_device *dev)
240{
241 int i;
242
243 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
244 struct pnp_dev *idev = NULL;
245
246 while ((idev = pnp_find_dev(NULL,
247 isapnp_clone_list[i].vendor,
248 isapnp_clone_list[i].function,
249 idev))) {
250 /* Avoid already found cards from previous calls */
251 if (pnp_device_attach(idev) < 0)
252 continue;
253 if (pnp_activate_dev(idev) < 0) {
254 pnp_device_detach(idev);
255 continue;
256 }
257 /* if no io and irq, search for next */
258 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
259 pnp_device_detach(idev);
260 continue;
261 }
262 /* found it */
263 dev->base_addr = pnp_port_start(idev, 0);
264 dev->irq = pnp_irq(idev, 0);
265 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
266 (char *) isapnp_clone_list[i].driver_data,
267 dev->base_addr, dev->irq);
268 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
269 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
270 pnp_device_detach(idev);
271 return -ENXIO;
272 }
273 ei_status.priv = (unsigned long)idev;
274 break;
275 }
276 if (!idev)
277 continue;
278 return 0;
279 }
280
281 return -ENODEV;
282}
283
284static int __init ne_probe1(struct net_device *dev, int ioaddr)
285{
286 int i;
287 unsigned char SA_prom[32];
288 int wordlength = 2;
289 const char *name = NULL;
290 int start_page, stop_page;
291 int neX000, ctron, copam, bad_card;
292 int reg0, ret;
293 static unsigned version_printed;
294
295 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
296 return -EBUSY;
297
298 reg0 = inb_p(ioaddr);
299 if (reg0 == 0xFF) {
300 ret = -ENODEV;
301 goto err_out;
302 }
303
304 /* Do a preliminary verification that we have a 8390. */
305 {
306 int regd;
307 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
308 regd = inb_p(ioaddr + 0x0d);
309 outb_p(0xff, ioaddr + 0x0d);
310 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
311 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
312 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
313 outb_p(reg0, ioaddr);
314 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
315 ret = -ENODEV;
316 goto err_out;
317 }
318 }
319
320 if (ei_debug && version_printed++ == 0)
321 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
322
323 printk(KERN_INFO "NE*000 ethercard probe at %#3x:", ioaddr);
324
325 /* A user with a poor card that fails to ack the reset, or that
326 does not have a valid 0x57,0x57 signature can still use this
327 without having to recompile. Specifying an i/o address along
328 with an otherwise unused dev->mem_end value of "0xBAD" will
329 cause the driver to skip these parts of the probe. */
330
331 bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad));
332
333 /* Reset card. Who knows what dain-bramaged state it was left in. */
334
335 {
336 unsigned long reset_start_time = jiffies;
337
338 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
339 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
340
341 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
342 if (jiffies - reset_start_time > 2*HZ/100) {
343 if (bad_card) {
344 printk(" (warning: no reset ack)");
345 break;
346 } else {
347 printk(" not found (no reset ack).\n");
348 ret = -ENODEV;
349 goto err_out;
350 }
351 }
352
353 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
354 }
355
356 /* Read the 16 bytes of station address PROM.
357 We must first initialize registers, similar to NS8390_init(eifdev, 0).
358 We can't reliably read the SAPROM address without this.
359 (I learned the hard way!). */
360 {
361 struct {unsigned char value, offset; } program_seq[] =
362 {
363 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
364 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
365 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
366 {0x00, EN0_RCNTHI},
367 {0x00, EN0_IMR}, /* Mask completion irq. */
368 {0xFF, EN0_ISR},
369 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
370 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
371 {32, EN0_RCNTLO},
372 {0x00, EN0_RCNTHI},
373 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
374 {0x00, EN0_RSARHI},
375 {E8390_RREAD+E8390_START, E8390_CMD},
376 };
377
378 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
379 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
380
381 }
382 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
383 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
384 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
385 if (SA_prom[i] != SA_prom[i+1])
386 wordlength = 1;
387 }
388
389 if (wordlength == 2)
390 {
391 for (i = 0; i < 16; i++)
392 SA_prom[i] = SA_prom[i+i];
393 /* We must set the 8390 for word mode. */
394 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
395 start_page = NESM_START_PG;
396 stop_page = NESM_STOP_PG;
397 } else {
398 start_page = NE1SM_START_PG;
399 stop_page = NE1SM_STOP_PG;
400 }
401
402#if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
403 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
404 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
405#else
406 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
407#endif
408 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
409 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
410
411 /* Set up the rest of the parameters. */
412 if (neX000 || bad_card || copam) {
413 name = (wordlength == 2) ? "NE2000" : "NE1000";
414 }
415 else if (ctron)
416 {
417 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
418 start_page = 0x01;
419 stop_page = (wordlength == 2) ? 0x40 : 0x20;
420 }
421 else
422 {
423#ifdef SUPPORT_NE_BAD_CLONES
424 /* Ack! Well, there might be a *bad* NE*000 clone there.
425 Check for total bogus addresses. */
426 for (i = 0; bad_clone_list[i].name8; i++)
427 {
428 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
429 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
430 SA_prom[2] == bad_clone_list[i].SAprefix[2])
431 {
432 if (wordlength == 2)
433 {
434 name = bad_clone_list[i].name16;
435 } else {
436 name = bad_clone_list[i].name8;
437 }
438 break;
439 }
440 }
441 if (bad_clone_list[i].name8 == NULL)
442 {
443 printk(" not found (invalid signature %2.2x %2.2x).\n",
444 SA_prom[14], SA_prom[15]);
445 ret = -ENXIO;
446 goto err_out;
447 }
448#else
449 printk(" not found.\n");
450 ret = -ENXIO;
451 goto err_out;
452#endif
453 }
454
455 if (dev->irq < 2)
456 {
457 unsigned long cookie = probe_irq_on();
458 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
459 outb_p(0x00, ioaddr + EN0_RCNTLO);
460 outb_p(0x00, ioaddr + EN0_RCNTHI);
461 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
462 mdelay(10); /* wait 10ms for interrupt to propagate */
463 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
464 dev->irq = probe_irq_off(cookie);
465 if (ei_debug > 2)
466 printk(" autoirq is %d\n", dev->irq);
467 } else if (dev->irq == 2)
468 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
469 or don't know which one to set. */
470 dev->irq = 9;
471
472 if (! dev->irq) {
473 printk(" failed to detect IRQ line.\n");
474 ret = -EAGAIN;
475 goto err_out;
476 }
477
478 /* Snarf the interrupt now. There's no point in waiting since we cannot
479 share and the board will usually be enabled. */
480 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
481 if (ret) {
482 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
483 goto err_out;
484 }
485
486 dev->base_addr = ioaddr;
487
488#ifdef CONFIG_PLAT_MAPPI
489 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
490 ioaddr + E8390_CMD); /* 0x61 */
491 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
492 dev->dev_addr[i] = SA_prom[i]
493 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
494 printk(" %2.2x", SA_prom[i]);
495 }
496#else
497 for(i = 0; i < ETHER_ADDR_LEN; i++) {
498 printk(" %2.2x", SA_prom[i]);
499 dev->dev_addr[i] = SA_prom[i];
500 }
501#endif
502
503 printk("\n%s: %s found at %#x, using IRQ %d.\n",
504 dev->name, name, ioaddr, dev->irq);
505
506 ei_status.name = name;
507 ei_status.tx_start_page = start_page;
508 ei_status.stop_page = stop_page;
509#ifdef CONFIG_PLAT_OAKS32R
510 ei_status.word16 = 0;
511#else
512 ei_status.word16 = (wordlength == 2);
513#endif
514
515 ei_status.rx_start_page = start_page + TX_PAGES;
516#ifdef PACKETBUF_MEMSIZE
517 /* Allow the packet buffer size to be overridden by know-it-alls. */
518 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
519#endif
520
521 ei_status.reset_8390 = &ne_reset_8390;
522 ei_status.block_input = &ne_block_input;
523 ei_status.block_output = &ne_block_output;
524 ei_status.get_8390_hdr = &ne_get_8390_hdr;
525 ei_status.priv = 0;
526 dev->open = &ne_open;
527 dev->stop = &ne_close;
528#ifdef CONFIG_NET_POLL_CONTROLLER
529 dev->poll_controller = ei_poll;
530#endif
531 NS8390_init(dev, 0);
b1fc5505
HX		 532
533 ret = register_netdev(dev);
534 if (ret)
535 goto out_irq;
1da177e4
LT		 536 return 0;
537
b1fc5505
HX		 538out_irq:
539 free_irq(dev->irq, dev);
1da177e4
LT		 540err_out:
541 release_region(ioaddr, NE_IO_EXTENT);
542 return ret;
543}
544
545static int ne_open(struct net_device *dev)
546{
547 ei_open(dev);
548 return 0;
549}
550
551static int ne_close(struct net_device *dev)
552{
553 if (ei_debug > 1)
554 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
555 ei_close(dev);
556 return 0;
557}
558
559/* Hard reset the card. This used to pause for the same period that a
560 8390 reset command required, but that shouldn't be necessary. */
561
562static void ne_reset_8390(struct net_device *dev)
563{
564 unsigned long reset_start_time = jiffies;
565
566 if (ei_debug > 1)
567 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
568
569 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
570 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
571
572 ei_status.txing = 0;
573 ei_status.dmaing = 0;
574
575 /* This check _should_not_ be necessary, omit eventually. */
576 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
577 if (jiffies - reset_start_time > 2*HZ/100) {
578 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
579 break;
580 }
581 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
582}
583
584/* Grab the 8390 specific header. Similar to the block_input routine, but
585 we don't need to be concerned with ring wrap as the header will be at
586 the start of a page, so we optimize accordingly. */
587
588static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
589{
590 int nic_base = dev->base_addr;
591
592 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
593
594 if (ei_status.dmaing)
595 {
596 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
597 "[DMAstat:%d][irqlock:%d].\n",
598 dev->name, ei_status.dmaing, ei_status.irqlock);
599 return;
600 }
601
602 ei_status.dmaing |= 0x01;
603 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
604 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
605 outb_p(0, nic_base + EN0_RCNTHI);
606 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
607 outb_p(ring_page, nic_base + EN0_RSARHI);
608 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
609
610 if (ei_status.word16)
611 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
612 else
613 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
614
615 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
616 ei_status.dmaing &= ~0x01;
617
618 le16_to_cpus(&hdr->count);
619}
620
621/* Block input and output, similar to the Crynwr packet driver. If you
622 are porting to a new ethercard, look at the packet driver source for hints.
623 The NEx000 doesn't share the on-board packet memory -- you have to put
624 the packet out through the "remote DMA" dataport using outb. */
625
626static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
627{
628#ifdef NE_SANITY_CHECK
629 int xfer_count = count;
630#endif
631 int nic_base = dev->base_addr;
632 char *buf = skb->data;
633
634 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
635 if (ei_status.dmaing)
636 {
637 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
638 "[DMAstat:%d][irqlock:%d].\n",
639 dev->name, ei_status.dmaing, ei_status.irqlock);
640 return;
641 }
642 ei_status.dmaing |= 0x01;
643 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
644 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
645 outb_p(count >> 8, nic_base + EN0_RCNTHI);
646 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
647 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
648 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
649 if (ei_status.word16)
650 {
651 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
652 if (count & 0x01)
653 {
654 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
655#ifdef NE_SANITY_CHECK
656 xfer_count++;
657#endif
658 }
659 } else {
660 insb(NE_BASE + NE_DATAPORT, buf, count);
661 }
662
663#ifdef NE_SANITY_CHECK
664 /* This was for the ALPHA version only, but enough people have
665 been encountering problems so it is still here. If you see
666 this message you either 1) have a slightly incompatible clone
667 or 2) have noise/speed problems with your bus. */
668
669 if (ei_debug > 1)
670 {
671 /* DMA termination address check... */
672 int addr, tries = 20;
673 do {
674 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
675 -- it's broken for Rx on some cards! */
676 int high = inb_p(nic_base + EN0_RSARHI);
677 int low = inb_p(nic_base + EN0_RSARLO);
678 addr = (high << 8) + low;
679 if (((ring_offset + xfer_count) & 0xff) == low)
680 break;
681 } while (--tries > 0);
682 if (tries <= 0)
683 printk(KERN_WARNING "%s: RX transfer address mismatch,"
684 "%#4.4x (expected) vs. %#4.4x (actual).\n",
685 dev->name, ring_offset + xfer_count, addr);
686 }
687#endif
688 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
689 ei_status.dmaing &= ~0x01;
690}
691
692static void ne_block_output(struct net_device *dev, int count,
693 const unsigned char *buf, const int start_page)
694{
695 int nic_base = NE_BASE;
696 unsigned long dma_start;
697#ifdef NE_SANITY_CHECK
698 int retries = 0;
699#endif
700
701 /* Round the count up for word writes. Do we need to do this?
702 What effect will an odd byte count have on the 8390?
703 I should check someday. */
704
705 if (ei_status.word16 && (count & 0x01))
706 count++;
707
708 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
709 if (ei_status.dmaing)
710 {
711 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
712 "[DMAstat:%d][irqlock:%d]\n",
713 dev->name, ei_status.dmaing, ei_status.irqlock);
714 return;
715 }
716 ei_status.dmaing |= 0x01;
717 /* We should already be in page 0, but to be safe... */
718 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
719
720#ifdef NE_SANITY_CHECK
721retry:
722#endif
723
724#ifdef NE8390_RW_BUGFIX
725 /* Handle the read-before-write bug the same way as the
726 Crynwr packet driver -- the NatSemi method doesn't work.
727 Actually this doesn't always work either, but if you have
728 problems with your NEx000 this is better than nothing! */
729
730 outb_p(0x42, nic_base + EN0_RCNTLO);
731 outb_p(0x00, nic_base + EN0_RCNTHI);
732 outb_p(0x42, nic_base + EN0_RSARLO);
733 outb_p(0x00, nic_base + EN0_RSARHI);
734 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
735 /* Make certain that the dummy read has occurred. */
736 udelay(6);
737#endif
738
739 outb_p(ENISR_RDC, nic_base + EN0_ISR);
740
741 /* Now the normal output. */
742 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
743 outb_p(count >> 8, nic_base + EN0_RCNTHI);
744 outb_p(0x00, nic_base + EN0_RSARLO);
745 outb_p(start_page, nic_base + EN0_RSARHI);
746
747 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
748 if (ei_status.word16) {
749 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
750 } else {
751 outsb(NE_BASE + NE_DATAPORT, buf, count);
752 }
753
754 dma_start = jiffies;
755
756#ifdef NE_SANITY_CHECK
757 /* This was for the ALPHA version only, but enough people have
758 been encountering problems so it is still here. */
759
760 if (ei_debug > 1)
761 {
762 /* DMA termination address check... */
763 int addr, tries = 20;
764 do {
765 int high = inb_p(nic_base + EN0_RSARHI);
766 int low = inb_p(nic_base + EN0_RSARLO);
767 addr = (high << 8) + low;
768 if ((start_page << 8) + count == addr)
769 break;
770 } while (--tries > 0);
771
772 if (tries <= 0)
773 {
774 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
775 "%#4.4x (expected) vs. %#4.4x (actual).\n",
776 dev->name, (start_page << 8) + count, addr);
777 if (retries++ == 0)
778 goto retry;
779 }
780 }
781#endif
782
783 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
784 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
785 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
786 ne_reset_8390(dev);
787 NS8390_init(dev,1);
788 break;
789 }
790
791 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
792 ei_status.dmaing &= ~0x01;
793 return;
794}
795
796\f
797#ifdef MODULE
798#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
799static struct net_device *dev_ne[MAX_NE_CARDS];
800static int io[MAX_NE_CARDS];
801static int irq[MAX_NE_CARDS];
802static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
803
804module_param_array(io, int, NULL, 0);
805module_param_array(irq, int, NULL, 0);
806module_param_array(bad, int, NULL, 0);
807MODULE_PARM_DESC(io, "I/O base address(es),required");
808MODULE_PARM_DESC(irq, "IRQ number(s)");
809MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
810MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
811MODULE_LICENSE("GPL");
812
813/* This is set up so that no ISA autoprobe takes place. We can't guarantee
814that the ne2k probe is the last 8390 based probe to take place (as it
815is at boot) and so the probe will get confused by any other 8390 cards.
816ISA device autoprobes on a running machine are not recommended anyway. */
817
818int init_module(void)
819{
820 int this_dev, found = 0;
821
822 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
823 struct net_device *dev = alloc_ei_netdev();
824 if (!dev)
825 break;
826 dev->irq = irq[this_dev];
827 dev->mem_end = bad[this_dev];
828 dev->base_addr = io[this_dev];
829 if (do_ne_probe(dev) == 0) {
b1fc5505
HX		 830 dev_ne[found++] = dev;
831 continue;
1da177e4
LT		 832 }
833 free_netdev(dev);
834 if (found)
835 break;
836 if (io[this_dev] != 0)
837 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
838 else
839 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
840 return -ENXIO;
841 }
842 if (found)
843 return 0;
844 return -ENODEV;
845}
846
847void cleanup_module(void)
848{
849 int this_dev;
850
851 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
852 struct net_device *dev = dev_ne[this_dev];
853 if (dev) {
854 unregister_netdev(dev);
855 cleanup_card(dev);
856 free_netdev(dev);
857 }
858 }
859}
860#endif /* MODULE */
kernel source for telekom puls (alcatel/mediatek)