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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 [email protected], 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 [email protected] : 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 ([email protected])\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
9cc975e0
RB		 57#if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
58#include <asm/tx4938/rbtx4938.h>
59#endif
60
1da177e4
LT		 61#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 */
9cc975e0
RB		 118#if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
119 {"RBHMA4X00-RTL8019", "RBHMA4X00/RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
120#endif
1da177e4
LT		 121 {"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
44456d37 139#if defined(CONFIG_PLAT_MAPPI)
1da177e4 140# define DCR_VAL 0x4b
44456d37 141#elif defined(CONFIG_PLAT_OAKS32R)
1da177e4
LT		 142# 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\f
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
1da177e4
LT		 215#ifndef MODULE
216struct net_device * __init ne_probe(int unit)
217{
218 struct net_device *dev = alloc_ei_netdev();
219 int err;
220
221 if (!dev)
222 return ERR_PTR(-ENOMEM);
223
224 sprintf(dev->name, "eth%d", unit);
225 netdev_boot_setup_check(dev);
226
9cc975e0
RB		 227#ifdef CONFIG_TOSHIBA_RBTX4938
228 dev->base_addr = 0x07f20280;
229 dev->irq = RBTX4938_RTL_8019_IRQ;
230#endif
1da177e4
LT		 231 err = do_ne_probe(dev);
232 if (err)
233 goto out;
1da177e4 234 return dev;
1da177e4
LT		 235out:
236 free_netdev(dev);
237 return ERR_PTR(err);
238}
239#endif
240
241static int __init ne_probe_isapnp(struct net_device *dev)
242{
243 int i;
244
245 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
246 struct pnp_dev *idev = NULL;
247
248 while ((idev = pnp_find_dev(NULL,
249 isapnp_clone_list[i].vendor,
250 isapnp_clone_list[i].function,
251 idev))) {
252 /* Avoid already found cards from previous calls */
253 if (pnp_device_attach(idev) < 0)
254 continue;
255 if (pnp_activate_dev(idev) < 0) {
256 pnp_device_detach(idev);
257 continue;
258 }
259 /* if no io and irq, search for next */
260 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
261 pnp_device_detach(idev);
262 continue;
263 }
264 /* found it */
265 dev->base_addr = pnp_port_start(idev, 0);
266 dev->irq = pnp_irq(idev, 0);
267 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
268 (char *) isapnp_clone_list[i].driver_data,
269 dev->base_addr, dev->irq);
270 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
271 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
272 pnp_device_detach(idev);
273 return -ENXIO;
274 }
275 ei_status.priv = (unsigned long)idev;
276 break;
277 }
278 if (!idev)
279 continue;
280 return 0;
281 }
282
283 return -ENODEV;
284}
285
286static int __init ne_probe1(struct net_device *dev, int ioaddr)
287{
288 int i;
289 unsigned char SA_prom[32];
290 int wordlength = 2;
291 const char *name = NULL;
292 int start_page, stop_page;
293 int neX000, ctron, copam, bad_card;
294 int reg0, ret;
295 static unsigned version_printed;
296
297 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
298 return -EBUSY;
299
300 reg0 = inb_p(ioaddr);
301 if (reg0 == 0xFF) {
302 ret = -ENODEV;
303 goto err_out;
304 }
305
306 /* Do a preliminary verification that we have a 8390. */
307 {
308 int regd;
309 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
310 regd = inb_p(ioaddr + 0x0d);
311 outb_p(0xff, ioaddr + 0x0d);
312 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
313 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
314 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
315 outb_p(reg0, ioaddr);
316 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
317 ret = -ENODEV;
318 goto err_out;
319 }
320 }
321
322 if (ei_debug && version_printed++ == 0)
323 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
324
325 printk(KERN_INFO "NE*000 ethercard probe at %#3x:", ioaddr);
326
327 /* A user with a poor card that fails to ack the reset, or that
328 does not have a valid 0x57,0x57 signature can still use this
329 without having to recompile. Specifying an i/o address along
330 with an otherwise unused dev->mem_end value of "0xBAD" will
331 cause the driver to skip these parts of the probe. */
332
333 bad_card = ((dev->base_addr != 0) && (dev->mem_end == 0xbad));
334
335 /* Reset card. Who knows what dain-bramaged state it was left in. */
336
337 {
338 unsigned long reset_start_time = jiffies;
339
340 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
341 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
342
343 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
344 if (jiffies - reset_start_time > 2*HZ/100) {
345 if (bad_card) {
346 printk(" (warning: no reset ack)");
347 break;
348 } else {
349 printk(" not found (no reset ack).\n");
350 ret = -ENODEV;
351 goto err_out;
352 }
353 }
354
355 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
356 }
357
358 /* Read the 16 bytes of station address PROM.
359 We must first initialize registers, similar to NS8390_init(eifdev, 0).
360 We can't reliably read the SAPROM address without this.
361 (I learned the hard way!). */
362 {
363 struct {unsigned char value, offset; } program_seq[] =
364 {
365 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
366 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
367 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
368 {0x00, EN0_RCNTHI},
369 {0x00, EN0_IMR}, /* Mask completion irq. */
370 {0xFF, EN0_ISR},
371 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
372 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
373 {32, EN0_RCNTLO},
374 {0x00, EN0_RCNTHI},
375 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
376 {0x00, EN0_RSARHI},
377 {E8390_RREAD+E8390_START, E8390_CMD},
378 };
379
380 for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++)
381 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
382
383 }
384 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
385 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
386 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
387 if (SA_prom[i] != SA_prom[i+1])
388 wordlength = 1;
389 }
390
391 if (wordlength == 2)
392 {
393 for (i = 0; i < 16; i++)
394 SA_prom[i] = SA_prom[i+i];
395 /* We must set the 8390 for word mode. */
396 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
397 start_page = NESM_START_PG;
398 stop_page = NESM_STOP_PG;
399 } else {
400 start_page = NE1SM_START_PG;
401 stop_page = NE1SM_STOP_PG;
402 }
403
404#if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
405 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
406 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
407#else
408 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
409#endif
410 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
411 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
412
413 /* Set up the rest of the parameters. */
414 if (neX000 || bad_card || copam) {
415 name = (wordlength == 2) ? "NE2000" : "NE1000";
416 }
417 else if (ctron)
418 {
419 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
420 start_page = 0x01;
421 stop_page = (wordlength == 2) ? 0x40 : 0x20;
422 }
423 else
424 {
425#ifdef SUPPORT_NE_BAD_CLONES
426 /* Ack! Well, there might be a *bad* NE*000 clone there.
427 Check for total bogus addresses. */
428 for (i = 0; bad_clone_list[i].name8; i++)
429 {
430 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
431 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
432 SA_prom[2] == bad_clone_list[i].SAprefix[2])
433 {
434 if (wordlength == 2)
435 {
436 name = bad_clone_list[i].name16;
437 } else {
438 name = bad_clone_list[i].name8;
439 }
440 break;
441 }
442 }
443 if (bad_clone_list[i].name8 == NULL)
444 {
445 printk(" not found (invalid signature %2.2x %2.2x).\n",
446 SA_prom[14], SA_prom[15]);
447 ret = -ENXIO;
448 goto err_out;
449 }
450#else
451 printk(" not found.\n");
452 ret = -ENXIO;
453 goto err_out;
454#endif
455 }
456
457 if (dev->irq < 2)
458 {
459 unsigned long cookie = probe_irq_on();
460 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
461 outb_p(0x00, ioaddr + EN0_RCNTLO);
462 outb_p(0x00, ioaddr + EN0_RCNTHI);
463 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
464 mdelay(10); /* wait 10ms for interrupt to propagate */
465 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
466 dev->irq = probe_irq_off(cookie);
467 if (ei_debug > 2)
468 printk(" autoirq is %d\n", dev->irq);
469 } else if (dev->irq == 2)
470 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
471 or don't know which one to set. */
472 dev->irq = 9;
473
474 if (! dev->irq) {
475 printk(" failed to detect IRQ line.\n");
476 ret = -EAGAIN;
477 goto err_out;
478 }
479
480 /* Snarf the interrupt now. There's no point in waiting since we cannot
481 share and the board will usually be enabled. */
482 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
483 if (ret) {
484 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
485 goto err_out;
486 }
487
488 dev->base_addr = ioaddr;
489
490#ifdef CONFIG_PLAT_MAPPI
491 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
492 ioaddr + E8390_CMD); /* 0x61 */
493 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
494 dev->dev_addr[i] = SA_prom[i]
495 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
496 printk(" %2.2x", SA_prom[i]);
497 }
498#else
499 for(i = 0; i < ETHER_ADDR_LEN; i++) {
500 printk(" %2.2x", SA_prom[i]);
501 dev->dev_addr[i] = SA_prom[i];
502 }
503#endif
504
505 printk("\n%s: %s found at %#x, using IRQ %d.\n",
506 dev->name, name, ioaddr, dev->irq);
507
508 ei_status.name = name;
509 ei_status.tx_start_page = start_page;
510 ei_status.stop_page = stop_page;
9cc975e0
RB		 511#if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
512 wordlength = 1;
513#endif
514
1da177e4
LT		 515#ifdef CONFIG_PLAT_OAKS32R
516 ei_status.word16 = 0;
517#else
518 ei_status.word16 = (wordlength == 2);
519#endif
520
521 ei_status.rx_start_page = start_page + TX_PAGES;
522#ifdef PACKETBUF_MEMSIZE
523 /* Allow the packet buffer size to be overridden by know-it-alls. */
524 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
525#endif
526
527 ei_status.reset_8390 = &ne_reset_8390;
528 ei_status.block_input = &ne_block_input;
529 ei_status.block_output = &ne_block_output;
530 ei_status.get_8390_hdr = &ne_get_8390_hdr;
531 ei_status.priv = 0;
532 dev->open = &ne_open;
533 dev->stop = &ne_close;
534#ifdef CONFIG_NET_POLL_CONTROLLER
535 dev->poll_controller = ei_poll;
536#endif
537 NS8390_init(dev, 0);
b1fc5505
HX		 538
539 ret = register_netdev(dev);
540 if (ret)
541 goto out_irq;
1da177e4
LT		 542 return 0;
543
b1fc5505
HX		 544out_irq:
545 free_irq(dev->irq, dev);
1da177e4
LT		 546err_out:
547 release_region(ioaddr, NE_IO_EXTENT);
548 return ret;
549}
550
551static int ne_open(struct net_device *dev)
552{
553 ei_open(dev);
554 return 0;
555}
556
557static int ne_close(struct net_device *dev)
558{
559 if (ei_debug > 1)
560 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
561 ei_close(dev);
562 return 0;
563}
564
565/* Hard reset the card. This used to pause for the same period that a
566 8390 reset command required, but that shouldn't be necessary. */
567
568static void ne_reset_8390(struct net_device *dev)
569{
570 unsigned long reset_start_time = jiffies;
571
572 if (ei_debug > 1)
573 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
574
575 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
576 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
577
578 ei_status.txing = 0;
579 ei_status.dmaing = 0;
580
581 /* This check _should_not_ be necessary, omit eventually. */
582 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
583 if (jiffies - reset_start_time > 2*HZ/100) {
584 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
585 break;
586 }
587 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
588}
589
590/* Grab the 8390 specific header. Similar to the block_input routine, but
591 we don't need to be concerned with ring wrap as the header will be at
592 the start of a page, so we optimize accordingly. */
593
594static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
595{
596 int nic_base = dev->base_addr;
597
598 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
599
600 if (ei_status.dmaing)
601 {
602 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
603 "[DMAstat:%d][irqlock:%d].\n",
604 dev->name, ei_status.dmaing, ei_status.irqlock);
605 return;
606 }
607
608 ei_status.dmaing |= 0x01;
609 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
610 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
611 outb_p(0, nic_base + EN0_RCNTHI);
612 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
613 outb_p(ring_page, nic_base + EN0_RSARHI);
614 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
615
616 if (ei_status.word16)
617 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
618 else
619 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
620
621 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
622 ei_status.dmaing &= ~0x01;
623
624 le16_to_cpus(&hdr->count);
625}
626
627/* Block input and output, similar to the Crynwr packet driver. If you
628 are porting to a new ethercard, look at the packet driver source for hints.
629 The NEx000 doesn't share the on-board packet memory -- you have to put
630 the packet out through the "remote DMA" dataport using outb. */
631
632static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
633{
634#ifdef NE_SANITY_CHECK
635 int xfer_count = count;
636#endif
637 int nic_base = dev->base_addr;
638 char *buf = skb->data;
639
640 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
641 if (ei_status.dmaing)
642 {
643 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
644 "[DMAstat:%d][irqlock:%d].\n",
645 dev->name, ei_status.dmaing, ei_status.irqlock);
646 return;
647 }
648 ei_status.dmaing |= 0x01;
649 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
650 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
651 outb_p(count >> 8, nic_base + EN0_RCNTHI);
652 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
653 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
654 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
655 if (ei_status.word16)
656 {
657 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
658 if (count & 0x01)
659 {
660 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
661#ifdef NE_SANITY_CHECK
662 xfer_count++;
663#endif
664 }
665 } else {
666 insb(NE_BASE + NE_DATAPORT, buf, count);
667 }
668
669#ifdef NE_SANITY_CHECK
670 /* This was for the ALPHA version only, but enough people have
671 been encountering problems so it is still here. If you see
672 this message you either 1) have a slightly incompatible clone
673 or 2) have noise/speed problems with your bus. */
674
675 if (ei_debug > 1)
676 {
677 /* DMA termination address check... */
678 int addr, tries = 20;
679 do {
680 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
681 -- it's broken for Rx on some cards! */
682 int high = inb_p(nic_base + EN0_RSARHI);
683 int low = inb_p(nic_base + EN0_RSARLO);
684 addr = (high << 8) + low;
685 if (((ring_offset + xfer_count) & 0xff) == low)
686 break;
687 } while (--tries > 0);
688 if (tries <= 0)
689 printk(KERN_WARNING "%s: RX transfer address mismatch,"
690 "%#4.4x (expected) vs. %#4.4x (actual).\n",
691 dev->name, ring_offset + xfer_count, addr);
692 }
693#endif
694 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
695 ei_status.dmaing &= ~0x01;
696}
697
698static void ne_block_output(struct net_device *dev, int count,
699 const unsigned char *buf, const int start_page)
700{
701 int nic_base = NE_BASE;
702 unsigned long dma_start;
703#ifdef NE_SANITY_CHECK
704 int retries = 0;
705#endif
706
707 /* Round the count up for word writes. Do we need to do this?
708 What effect will an odd byte count have on the 8390?
709 I should check someday. */
710
711 if (ei_status.word16 && (count & 0x01))
712 count++;
713
714 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
715 if (ei_status.dmaing)
716 {
717 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
718 "[DMAstat:%d][irqlock:%d]\n",
719 dev->name, ei_status.dmaing, ei_status.irqlock);
720 return;
721 }
722 ei_status.dmaing |= 0x01;
723 /* We should already be in page 0, but to be safe... */
724 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
725
726#ifdef NE_SANITY_CHECK
727retry:
728#endif
729
730#ifdef NE8390_RW_BUGFIX
731 /* Handle the read-before-write bug the same way as the
732 Crynwr packet driver -- the NatSemi method doesn't work.
733 Actually this doesn't always work either, but if you have
734 problems with your NEx000 this is better than nothing! */
735
736 outb_p(0x42, nic_base + EN0_RCNTLO);
737 outb_p(0x00, nic_base + EN0_RCNTHI);
738 outb_p(0x42, nic_base + EN0_RSARLO);
739 outb_p(0x00, nic_base + EN0_RSARHI);
740 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
741 /* Make certain that the dummy read has occurred. */
742 udelay(6);
743#endif
744
745 outb_p(ENISR_RDC, nic_base + EN0_ISR);
746
747 /* Now the normal output. */
748 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
749 outb_p(count >> 8, nic_base + EN0_RCNTHI);
750 outb_p(0x00, nic_base + EN0_RSARLO);
751 outb_p(start_page, nic_base + EN0_RSARHI);
752
753 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
754 if (ei_status.word16) {
755 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
756 } else {
757 outsb(NE_BASE + NE_DATAPORT, buf, count);
758 }
759
760 dma_start = jiffies;
761
762#ifdef NE_SANITY_CHECK
763 /* This was for the ALPHA version only, but enough people have
764 been encountering problems so it is still here. */
765
766 if (ei_debug > 1)
767 {
768 /* DMA termination address check... */
769 int addr, tries = 20;
770 do {
771 int high = inb_p(nic_base + EN0_RSARHI);
772 int low = inb_p(nic_base + EN0_RSARLO);
773 addr = (high << 8) + low;
774 if ((start_page << 8) + count == addr)
775 break;
776 } while (--tries > 0);
777
778 if (tries <= 0)
779 {
780 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
781 "%#4.4x (expected) vs. %#4.4x (actual).\n",
782 dev->name, (start_page << 8) + count, addr);
783 if (retries++ == 0)
784 goto retry;
785 }
786 }
787#endif
788
789 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
790 if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
791 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
792 ne_reset_8390(dev);
793 NS8390_init(dev,1);
794 break;
795 }
796
797 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
798 ei_status.dmaing &= ~0x01;
799 return;
800}
801
802\f
803#ifdef MODULE
804#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
805static struct net_device *dev_ne[MAX_NE_CARDS];
806static int io[MAX_NE_CARDS];
807static int irq[MAX_NE_CARDS];
808static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
809
810module_param_array(io, int, NULL, 0);
811module_param_array(irq, int, NULL, 0);
812module_param_array(bad, int, NULL, 0);
813MODULE_PARM_DESC(io, "I/O base address(es),required");
814MODULE_PARM_DESC(irq, "IRQ number(s)");
815MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
816MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
817MODULE_LICENSE("GPL");
818
819/* This is set up so that no ISA autoprobe takes place. We can't guarantee
820that the ne2k probe is the last 8390 based probe to take place (as it
821is at boot) and so the probe will get confused by any other 8390 cards.
822ISA device autoprobes on a running machine are not recommended anyway. */
823
824int init_module(void)
825{
826 int this_dev, found = 0;
827
828 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
829 struct net_device *dev = alloc_ei_netdev();
830 if (!dev)
831 break;
832 dev->irq = irq[this_dev];
833 dev->mem_end = bad[this_dev];
834 dev->base_addr = io[this_dev];
835 if (do_ne_probe(dev) == 0) {
b1fc5505
HX		 836 dev_ne[found++] = dev;
837 continue;
1da177e4
LT		 838 }
839 free_netdev(dev);
840 if (found)
841 break;
842 if (io[this_dev] != 0)
843 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
844 else
845 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
846 return -ENXIO;
847 }
848 if (found)
849 return 0;
850 return -ENODEV;
851}
852
64916f1e
DV		 853static void cleanup_card(struct net_device *dev)
854{
855 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
856 if (idev)
857 pnp_device_detach(idev);
858 free_irq(dev->irq, dev);
859 release_region(dev->base_addr, NE_IO_EXTENT);
860}
861
1da177e4
LT		 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 */
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