blob: 0de8fdd2aa86f338fa026e7c308cb3ca6be2b13c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* 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
Ralf Baechle9cc975e2005-10-10 14:51:21 +010057#if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
58#include <asm/tx4938/rbtx4938.h>
59#endif
60
Linus Torvalds1da177e2005-04-16 15:20:36 -070061#include "8390.h"
62
63#define DRV_NAME "ne"
64
65/* Some defines that people can play with if so inclined. */
66
67/* Do we support clones that don't adhere to 14,15 of the SAprom ? */
68#define SUPPORT_NE_BAD_CLONES
69
70/* Do we perform extra sanity checks on stuff ? */
71/* #define NE_SANITY_CHECK */
72
73/* Do we implement the read before write bugfix ? */
74/* #define NE_RW_BUGFIX */
75
76/* Do we have a non std. amount of memory? (in units of 256 byte pages) */
77/* #define PACKETBUF_MEMSIZE 0x40 */
78
79/* A zero-terminated list of I/O addresses to be probed at boot. */
80#ifndef MODULE
81static unsigned int netcard_portlist[] __initdata = {
82 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
83};
84#endif
85
86static struct isapnp_device_id isapnp_clone_list[] __initdata = {
87 { ISAPNP_CARD_ID('A','X','E',0x2011),
88 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
89 (long) "NetGear EA201" },
90 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
91 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
92 (long) "NN NE2000" },
93 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
94 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
95 (long) "Generic PNP" },
96 { } /* terminate list */
97};
98
99MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
100
101#ifdef SUPPORT_NE_BAD_CLONES
102/* A list of bad clones that we none-the-less recognize. */
103static struct { const char *name8, *name16; unsigned char SAprefix[4];}
104bad_clone_list[] __initdata = {
105 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
106 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
107 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
108 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
109 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
110 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
111 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
112 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
113 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
114 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
115 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
116 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
117 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
Ralf Baechle9cc975e2005-10-10 14:51:21 +0100118#if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
119 {"RBHMA4X00-RTL8019", "RBHMA4X00/RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
120#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
122 {NULL,}
123};
124#endif
125
126/* ---- No user-serviceable parts below ---- */
127
128#define NE_BASE (dev->base_addr)
129#define NE_CMD 0x00
130#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
131#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
132#define NE_IO_EXTENT 0x20
133
134#define NE1SM_START_PG 0x20 /* First page of TX buffer */
135#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
136#define NESM_START_PG 0x40 /* First page of TX buffer */
137#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
138
Olaf Hering44456d32005-07-27 11:45:17 -0700139#if defined(CONFIG_PLAT_MAPPI)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140# define DCR_VAL 0x4b
Olaf Hering44456d32005-07-27 11:45:17 -0700141#elif defined(CONFIG_PLAT_OAKS32R)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142# define DCR_VAL 0x48
143#else
144# define DCR_VAL 0x49
145#endif
146
147static int ne_probe1(struct net_device *dev, int ioaddr);
148static int ne_probe_isapnp(struct net_device *dev);
149
150static int ne_open(struct net_device *dev);
151static int ne_close(struct net_device *dev);
152
153static void ne_reset_8390(struct net_device *dev);
154static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
155 int ring_page);
156static void ne_block_input(struct net_device *dev, int count,
157 struct sk_buff *skb, int ring_offset);
158static void ne_block_output(struct net_device *dev, const int count,
159 const unsigned char *buf, const int start_page);
160
161
162/* Probe for various non-shared-memory ethercards.
163
164 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
165 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
166 the SAPROM, while other supposed NE2000 clones must be detected by their
167 SA prefix.
168
169 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
170 mode results in doubled values, which can be detected and compensated for.
171
172 The probe is also responsible for initializing the card and filling
173 in the 'dev' and 'ei_status' structures.
174
175 We use the minimum memory size for some ethercard product lines, iff we can't
176 distinguish models. You can increase the packet buffer size by setting
177 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
178 E1010 starts at 0x100 and ends at 0x2000.
179 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
180 E2010 starts at 0x100 and ends at 0x4000.
181 E2010-x starts at 0x100 and ends at 0xffff. */
182
183static int __init do_ne_probe(struct net_device *dev)
184{
185 unsigned int base_addr = dev->base_addr;
186#ifndef MODULE
187 int orig_irq = dev->irq;
188#endif
189
190 SET_MODULE_OWNER(dev);
191
192 /* First check any supplied i/o locations. User knows best. <cough> */
193 if (base_addr > 0x1ff) /* Check a single specified location. */
194 return ne_probe1(dev, base_addr);
195 else if (base_addr != 0) /* Don't probe at all. */
196 return -ENXIO;
197
198 /* Then look for any installed ISAPnP clones */
199 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
200 return 0;
201
202#ifndef MODULE
203 /* Last resort. The semi-risky ISA auto-probe. */
204 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
205 int ioaddr = netcard_portlist[base_addr];
206 dev->irq = orig_irq;
207 if (ne_probe1(dev, ioaddr) == 0)
208 return 0;
209 }
210#endif
211
212 return -ENODEV;
213}
214
215static void cleanup_card(struct net_device *dev)
216{
217 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
218 if (idev)
219 pnp_device_detach(idev);
220 free_irq(dev->irq, dev);
221 release_region(dev->base_addr, NE_IO_EXTENT);
222}
223
224#ifndef MODULE
225struct net_device * __init ne_probe(int unit)
226{
227 struct net_device *dev = alloc_ei_netdev();
228 int err;
229
230 if (!dev)
231 return ERR_PTR(-ENOMEM);
232
233 sprintf(dev->name, "eth%d", unit);
234 netdev_boot_setup_check(dev);
235
Ralf Baechle9cc975e2005-10-10 14:51:21 +0100236#ifdef CONFIG_TOSHIBA_RBTX4938
237 dev->base_addr = 0x07f20280;
238 dev->irq = RBTX4938_RTL_8019_IRQ;
239#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 err = do_ne_probe(dev);
241 if (err)
242 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 return dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244out:
245 free_netdev(dev);
246 return ERR_PTR(err);
247}
248#endif
249
250static int __init ne_probe_isapnp(struct net_device *dev)
251{
252 int i;
253
254 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
255 struct pnp_dev *idev = NULL;
256
257 while ((idev = pnp_find_dev(NULL,
258 isapnp_clone_list[i].vendor,
259 isapnp_clone_list[i].function,
260 idev))) {
261 /* Avoid already found cards from previous calls */
262 if (pnp_device_attach(idev) < 0)
263 continue;
264 if (pnp_activate_dev(idev) < 0) {
265 pnp_device_detach(idev);
266 continue;
267 }
268 /* if no io and irq, search for next */
269 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
270 pnp_device_detach(idev);
271 continue;
272 }
273 /* found it */
274 dev->base_addr = pnp_port_start(idev, 0);
275 dev->irq = pnp_irq(idev, 0);
276 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
277 (char *) isapnp_clone_list[i].driver_data,
278 dev->base_addr, dev->irq);
279 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
280 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
281 pnp_device_detach(idev);
282 return -ENXIO;
283 }
284 ei_status.priv = (unsigned long)idev;
285 break;
286 }
287 if (!idev)
288 continue;
289 return 0;
290 }
291
292 return -ENODEV;
293}
294
295static int __init ne_probe1(struct net_device *dev, int ioaddr)
296{
297 int i;
298 unsigned char SA_prom[32];
299 int wordlength = 2;
300 const char *name = NULL;
301 int start_page, stop_page;
302 int neX000, ctron, copam, bad_card;
303 int reg0, ret;
304 static unsigned version_printed;
305
306 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
307 return -EBUSY;
308
309 reg0 = inb_p(ioaddr);
310 if (reg0 == 0xFF) {
311 ret = -ENODEV;
312 goto err_out;
313 }
314
315 /* Do a preliminary verification that we have a 8390. */
316 {
317 int regd;
318 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
319 regd = inb_p(ioaddr + 0x0d);
320 outb_p(0xff, ioaddr + 0x0d);
321 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
322 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
323 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
324 outb_p(reg0, ioaddr);
325 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
326 ret = -ENODEV;
327 goto err_out;
328 }
329 }
330
331 if (ei_debug && version_printed++ == 0)
332 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
333
334 printk(KERN_INFO "NE*000 ethercard probe at %#3x:", ioaddr);
335
336 /* A user with a poor card that fails to ack the reset, or that
337 does not have a valid 0x57,0x57 signature can still use this
338 without having to recompile. Specifying an i/o address along
339 with an otherwise unused dev->mem_end value of "0xBAD" will
340 cause the driver to skip these parts of the probe. */
341
342 bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad));
343
344 /* Reset card. Who knows what dain-bramaged state it was left in. */
345
346 {
347 unsigned long reset_start_time = jiffies;
348
349 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
350 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
351
352 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
353 if (jiffies - reset_start_time > 2*HZ/100) {
354 if (bad_card) {
355 printk(" (warning: no reset ack)");
356 break;
357 } else {
358 printk(" not found (no reset ack).\n");
359 ret = -ENODEV;
360 goto err_out;
361 }
362 }
363
364 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
365 }
366
367 /* Read the 16 bytes of station address PROM.
368 We must first initialize registers, similar to NS8390_init(eifdev, 0).
369 We can't reliably read the SAPROM address without this.
370 (I learned the hard way!). */
371 {
372 struct {unsigned char value, offset; } program_seq[] =
373 {
374 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
375 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
376 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
377 {0x00, EN0_RCNTHI},
378 {0x00, EN0_IMR}, /* Mask completion irq. */
379 {0xFF, EN0_ISR},
380 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
381 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
382 {32, EN0_RCNTLO},
383 {0x00, EN0_RCNTHI},
384 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
385 {0x00, EN0_RSARHI},
386 {E8390_RREAD+E8390_START, E8390_CMD},
387 };
388
389 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
390 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
391
392 }
393 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
394 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
395 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
396 if (SA_prom[i] != SA_prom[i+1])
397 wordlength = 1;
398 }
399
400 if (wordlength == 2)
401 {
402 for (i = 0; i < 16; i++)
403 SA_prom[i] = SA_prom[i+i];
404 /* We must set the 8390 for word mode. */
405 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
406 start_page = NESM_START_PG;
407 stop_page = NESM_STOP_PG;
408 } else {
409 start_page = NE1SM_START_PG;
410 stop_page = NE1SM_STOP_PG;
411 }
412
413#if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
414 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
415 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
416#else
417 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
418#endif
419 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
420 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
421
422 /* Set up the rest of the parameters. */
423 if (neX000 || bad_card || copam) {
424 name = (wordlength == 2) ? "NE2000" : "NE1000";
425 }
426 else if (ctron)
427 {
428 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
429 start_page = 0x01;
430 stop_page = (wordlength == 2) ? 0x40 : 0x20;
431 }
432 else
433 {
434#ifdef SUPPORT_NE_BAD_CLONES
435 /* Ack! Well, there might be a *bad* NE*000 clone there.
436 Check for total bogus addresses. */
437 for (i = 0; bad_clone_list[i].name8; i++)
438 {
439 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
440 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
441 SA_prom[2] == bad_clone_list[i].SAprefix[2])
442 {
443 if (wordlength == 2)
444 {
445 name = bad_clone_list[i].name16;
446 } else {
447 name = bad_clone_list[i].name8;
448 }
449 break;
450 }
451 }
452 if (bad_clone_list[i].name8 == NULL)
453 {
454 printk(" not found (invalid signature %2.2x %2.2x).\n",
455 SA_prom[14], SA_prom[15]);
456 ret = -ENXIO;
457 goto err_out;
458 }
459#else
460 printk(" not found.\n");
461 ret = -ENXIO;
462 goto err_out;
463#endif
464 }
465
466 if (dev->irq < 2)
467 {
468 unsigned long cookie = probe_irq_on();
469 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
470 outb_p(0x00, ioaddr + EN0_RCNTLO);
471 outb_p(0x00, ioaddr + EN0_RCNTHI);
472 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
473 mdelay(10); /* wait 10ms for interrupt to propagate */
474 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
475 dev->irq = probe_irq_off(cookie);
476 if (ei_debug > 2)
477 printk(" autoirq is %d\n", dev->irq);
478 } else if (dev->irq == 2)
479 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
480 or don't know which one to set. */
481 dev->irq = 9;
482
483 if (! dev->irq) {
484 printk(" failed to detect IRQ line.\n");
485 ret = -EAGAIN;
486 goto err_out;
487 }
488
489 /* Snarf the interrupt now. There's no point in waiting since we cannot
490 share and the board will usually be enabled. */
491 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
492 if (ret) {
493 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
494 goto err_out;
495 }
496
497 dev->base_addr = ioaddr;
498
499#ifdef CONFIG_PLAT_MAPPI
500 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
501 ioaddr + E8390_CMD); /* 0x61 */
502 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
503 dev->dev_addr[i] = SA_prom[i]
504 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
505 printk(" %2.2x", SA_prom[i]);
506 }
507#else
508 for(i = 0; i < ETHER_ADDR_LEN; i++) {
509 printk(" %2.2x", SA_prom[i]);
510 dev->dev_addr[i] = SA_prom[i];
511 }
512#endif
513
514 printk("\n%s: %s found at %#x, using IRQ %d.\n",
515 dev->name, name, ioaddr, dev->irq);
516
517 ei_status.name = name;
518 ei_status.tx_start_page = start_page;
519 ei_status.stop_page = stop_page;
Ralf Baechle9cc975e2005-10-10 14:51:21 +0100520#if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
521 wordlength = 1;
522#endif
523
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524#ifdef CONFIG_PLAT_OAKS32R
525 ei_status.word16 = 0;
526#else
527 ei_status.word16 = (wordlength == 2);
528#endif
529
530 ei_status.rx_start_page = start_page + TX_PAGES;
531#ifdef PACKETBUF_MEMSIZE
532 /* Allow the packet buffer size to be overridden by know-it-alls. */
533 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
534#endif
535
536 ei_status.reset_8390 = &ne_reset_8390;
537 ei_status.block_input = &ne_block_input;
538 ei_status.block_output = &ne_block_output;
539 ei_status.get_8390_hdr = &ne_get_8390_hdr;
540 ei_status.priv = 0;
541 dev->open = &ne_open;
542 dev->stop = &ne_close;
543#ifdef CONFIG_NET_POLL_CONTROLLER
544 dev->poll_controller = ei_poll;
545#endif
546 NS8390_init(dev, 0);
b1fc5502005-05-12 20:11:55 -0400547
548 ret = register_netdev(dev);
549 if (ret)
550 goto out_irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 return 0;
552
b1fc5502005-05-12 20:11:55 -0400553out_irq:
554 free_irq(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555err_out:
556 release_region(ioaddr, NE_IO_EXTENT);
557 return ret;
558}
559
560static int ne_open(struct net_device *dev)
561{
562 ei_open(dev);
563 return 0;
564}
565
566static int ne_close(struct net_device *dev)
567{
568 if (ei_debug > 1)
569 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
570 ei_close(dev);
571 return 0;
572}
573
574/* Hard reset the card. This used to pause for the same period that a
575 8390 reset command required, but that shouldn't be necessary. */
576
577static void ne_reset_8390(struct net_device *dev)
578{
579 unsigned long reset_start_time = jiffies;
580
581 if (ei_debug > 1)
582 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
583
584 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
585 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
586
587 ei_status.txing = 0;
588 ei_status.dmaing = 0;
589
590 /* This check _should_not_ be necessary, omit eventually. */
591 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
592 if (jiffies - reset_start_time > 2*HZ/100) {
593 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
594 break;
595 }
596 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
597}
598
599/* Grab the 8390 specific header. Similar to the block_input routine, but
600 we don't need to be concerned with ring wrap as the header will be at
601 the start of a page, so we optimize accordingly. */
602
603static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
604{
605 int nic_base = dev->base_addr;
606
607 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
608
609 if (ei_status.dmaing)
610 {
611 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
612 "[DMAstat:%d][irqlock:%d].\n",
613 dev->name, ei_status.dmaing, ei_status.irqlock);
614 return;
615 }
616
617 ei_status.dmaing |= 0x01;
618 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
619 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
620 outb_p(0, nic_base + EN0_RCNTHI);
621 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
622 outb_p(ring_page, nic_base + EN0_RSARHI);
623 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
624
625 if (ei_status.word16)
626 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
627 else
628 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
629
630 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
631 ei_status.dmaing &= ~0x01;
632
633 le16_to_cpus(&hdr->count);
634}
635
636/* Block input and output, similar to the Crynwr packet driver. If you
637 are porting to a new ethercard, look at the packet driver source for hints.
638 The NEx000 doesn't share the on-board packet memory -- you have to put
639 the packet out through the "remote DMA" dataport using outb. */
640
641static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
642{
643#ifdef NE_SANITY_CHECK
644 int xfer_count = count;
645#endif
646 int nic_base = dev->base_addr;
647 char *buf = skb->data;
648
649 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
650 if (ei_status.dmaing)
651 {
652 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
653 "[DMAstat:%d][irqlock:%d].\n",
654 dev->name, ei_status.dmaing, ei_status.irqlock);
655 return;
656 }
657 ei_status.dmaing |= 0x01;
658 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
659 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
660 outb_p(count >> 8, nic_base + EN0_RCNTHI);
661 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
662 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
663 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
664 if (ei_status.word16)
665 {
666 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
667 if (count & 0x01)
668 {
669 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
670#ifdef NE_SANITY_CHECK
671 xfer_count++;
672#endif
673 }
674 } else {
675 insb(NE_BASE + NE_DATAPORT, buf, count);
676 }
677
678#ifdef NE_SANITY_CHECK
679 /* This was for the ALPHA version only, but enough people have
680 been encountering problems so it is still here. If you see
681 this message you either 1) have a slightly incompatible clone
682 or 2) have noise/speed problems with your bus. */
683
684 if (ei_debug > 1)
685 {
686 /* DMA termination address check... */
687 int addr, tries = 20;
688 do {
689 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
690 -- it's broken for Rx on some cards! */
691 int high = inb_p(nic_base + EN0_RSARHI);
692 int low = inb_p(nic_base + EN0_RSARLO);
693 addr = (high << 8) + low;
694 if (((ring_offset + xfer_count) & 0xff) == low)
695 break;
696 } while (--tries > 0);
697 if (tries <= 0)
698 printk(KERN_WARNING "%s: RX transfer address mismatch,"
699 "%#4.4x (expected) vs. %#4.4x (actual).\n",
700 dev->name, ring_offset + xfer_count, addr);
701 }
702#endif
703 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
704 ei_status.dmaing &= ~0x01;
705}
706
707static void ne_block_output(struct net_device *dev, int count,
708 const unsigned char *buf, const int start_page)
709{
710 int nic_base = NE_BASE;
711 unsigned long dma_start;
712#ifdef NE_SANITY_CHECK
713 int retries = 0;
714#endif
715
716 /* Round the count up for word writes. Do we need to do this?
717 What effect will an odd byte count have on the 8390?
718 I should check someday. */
719
720 if (ei_status.word16 && (count & 0x01))
721 count++;
722
723 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
724 if (ei_status.dmaing)
725 {
726 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
727 "[DMAstat:%d][irqlock:%d]\n",
728 dev->name, ei_status.dmaing, ei_status.irqlock);
729 return;
730 }
731 ei_status.dmaing |= 0x01;
732 /* We should already be in page 0, but to be safe... */
733 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
734
735#ifdef NE_SANITY_CHECK
736retry:
737#endif
738
739#ifdef NE8390_RW_BUGFIX
740 /* Handle the read-before-write bug the same way as the
741 Crynwr packet driver -- the NatSemi method doesn't work.
742 Actually this doesn't always work either, but if you have
743 problems with your NEx000 this is better than nothing! */
744
745 outb_p(0x42, nic_base + EN0_RCNTLO);
746 outb_p(0x00, nic_base + EN0_RCNTHI);
747 outb_p(0x42, nic_base + EN0_RSARLO);
748 outb_p(0x00, nic_base + EN0_RSARHI);
749 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
750 /* Make certain that the dummy read has occurred. */
751 udelay(6);
752#endif
753
754 outb_p(ENISR_RDC, nic_base + EN0_ISR);
755
756 /* Now the normal output. */
757 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
758 outb_p(count >> 8, nic_base + EN0_RCNTHI);
759 outb_p(0x00, nic_base + EN0_RSARLO);
760 outb_p(start_page, nic_base + EN0_RSARHI);
761
762 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
763 if (ei_status.word16) {
764 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
765 } else {
766 outsb(NE_BASE + NE_DATAPORT, buf, count);
767 }
768
769 dma_start = jiffies;
770
771#ifdef NE_SANITY_CHECK
772 /* This was for the ALPHA version only, but enough people have
773 been encountering problems so it is still here. */
774
775 if (ei_debug > 1)
776 {
777 /* DMA termination address check... */
778 int addr, tries = 20;
779 do {
780 int high = inb_p(nic_base + EN0_RSARHI);
781 int low = inb_p(nic_base + EN0_RSARLO);
782 addr = (high << 8) + low;
783 if ((start_page << 8) + count == addr)
784 break;
785 } while (--tries > 0);
786
787 if (tries <= 0)
788 {
789 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
790 "%#4.4x (expected) vs. %#4.4x (actual).\n",
791 dev->name, (start_page << 8) + count, addr);
792 if (retries++ == 0)
793 goto retry;
794 }
795 }
796#endif
797
798 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
799 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
800 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
801 ne_reset_8390(dev);
802 NS8390_init(dev,1);
803 break;
804 }
805
806 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
807 ei_status.dmaing &= ~0x01;
808 return;
809}
810
811
812#ifdef MODULE
813#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
814static struct net_device *dev_ne[MAX_NE_CARDS];
815static int io[MAX_NE_CARDS];
816static int irq[MAX_NE_CARDS];
817static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
818
819module_param_array(io, int, NULL, 0);
820module_param_array(irq, int, NULL, 0);
821module_param_array(bad, int, NULL, 0);
822MODULE_PARM_DESC(io, "I/O base address(es),required");
823MODULE_PARM_DESC(irq, "IRQ number(s)");
824MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
825MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
826MODULE_LICENSE("GPL");
827
828/* This is set up so that no ISA autoprobe takes place. We can't guarantee
829that the ne2k probe is the last 8390 based probe to take place (as it
830is at boot) and so the probe will get confused by any other 8390 cards.
831ISA device autoprobes on a running machine are not recommended anyway. */
832
833int init_module(void)
834{
835 int this_dev, found = 0;
836
837 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
838 struct net_device *dev = alloc_ei_netdev();
839 if (!dev)
840 break;
841 dev->irq = irq[this_dev];
842 dev->mem_end = bad[this_dev];
843 dev->base_addr = io[this_dev];
844 if (do_ne_probe(dev) == 0) {
b1fc5502005-05-12 20:11:55 -0400845 dev_ne[found++] = dev;
846 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847 }
848 free_netdev(dev);
849 if (found)
850 break;
851 if (io[this_dev] != 0)
852 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
853 else
854 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
855 return -ENXIO;
856 }
857 if (found)
858 return 0;
859 return -ENODEV;
860}
861
862void cleanup_module(void)
863{
864 int this_dev;
865
866 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
867 struct net_device *dev = dev_ne[this_dev];
868 if (dev) {
869 unregister_netdev(dev);
870 cleanup_card(dev);
871 free_netdev(dev);
872 }
873 }
874}
875#endif /* MODULE */