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Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[linux-2.6-block.git] / drivers / net / ne.c
CommitLineData
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>
ff5688ae 53#include <linux/jiffies.h>
a4d542b9 54#include <linux/platform_device.h>
1da177e4
LT		 55
56#include <asm/system.h>
57#include <asm/io.h>
58
59#include "8390.h"
60
61#define DRV_NAME "ne"
62
63/* Some defines that people can play with if so inclined. */
64
65/* Do we support clones that don't adhere to 14,15 of the SAprom ? */
66#define SUPPORT_NE_BAD_CLONES
67
68/* Do we perform extra sanity checks on stuff ? */
69/* #define NE_SANITY_CHECK */
70
71/* Do we implement the read before write bugfix ? */
72/* #define NE_RW_BUGFIX */
73
74/* Do we have a non std. amount of memory? (in units of 256 byte pages) */
75/* #define PACKETBUF_MEMSIZE 0x40 */
76
1c08bf10
AN		 77#if !defined(MODULE) && (defined(CONFIG_ISA) || defined(CONFIG_M32R))
78/* Do we need a portlist for the ISA auto-probe ? */
79#define NEEDS_PORTLIST
80#endif
81
1da177e4 82/* A zero-terminated list of I/O addresses to be probed at boot. */
1c08bf10 83#ifdef NEEDS_PORTLIST
1da177e4
LT		 84static unsigned int netcard_portlist[] __initdata = {
85 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
86};
87#endif
88
89static struct isapnp_device_id isapnp_clone_list[] __initdata = {
90 { ISAPNP_CARD_ID('A','X','E',0x2011),
91 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
92 (long) "NetGear EA201" },
93 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
94 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
95 (long) "NN NE2000" },
96 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
97 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
98 (long) "Generic PNP" },
99 { } /* terminate list */
100};
101
102MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
103
104#ifdef SUPPORT_NE_BAD_CLONES
105/* A list of bad clones that we none-the-less recognize. */
106static struct { const char *name8, *name16; unsigned char SAprefix[4];}
107bad_clone_list[] __initdata = {
108 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
109 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
110 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
111 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
112 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
113 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
114 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
115 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
116 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
117 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
118 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
119 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
120 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
9cc975e0
RB		 121#if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
122 {"RBHMA4X00-RTL8019", "RBHMA4X00/RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
123#endif
1da177e4
LT		 124 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
125 {NULL,}
126};
127#endif
128
129/* ---- No user-serviceable parts below ---- */
130
131#define NE_BASE (dev->base_addr)
132#define NE_CMD 0x00
133#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
134#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
135#define NE_IO_EXTENT 0x20
136
137#define NE1SM_START_PG 0x20 /* First page of TX buffer */
138#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
139#define NESM_START_PG 0x40 /* First page of TX buffer */
140#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
141
44456d37 142#if defined(CONFIG_PLAT_MAPPI)
1da177e4 143# define DCR_VAL 0x4b
aedc0e52
SS		 144#elif defined(CONFIG_PLAT_OAKS32R) || \
145 defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
146# define DCR_VAL 0x48 /* 8-bit mode */
1da177e4
LT		 147#else
148# define DCR_VAL 0x49
149#endif
150
f0e93c10 151static int ne_probe1(struct net_device *dev, unsigned long ioaddr);
1da177e4
LT		 152static int ne_probe_isapnp(struct net_device *dev);
153
154static int ne_open(struct net_device *dev);
155static int ne_close(struct net_device *dev);
156
157static void ne_reset_8390(struct net_device *dev);
158static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
159 int ring_page);
160static void ne_block_input(struct net_device *dev, int count,
161 struct sk_buff *skb, int ring_offset);
162static void ne_block_output(struct net_device *dev, const int count,
163 const unsigned char *buf, const int start_page);
164
6aa20a22 165
1da177e4
LT		 166/* Probe for various non-shared-memory ethercards.
167
168 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
169 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
170 the SAPROM, while other supposed NE2000 clones must be detected by their
171 SA prefix.
172
173 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
174 mode results in doubled values, which can be detected and compensated for.
175
176 The probe is also responsible for initializing the card and filling
177 in the 'dev' and 'ei_status' structures.
178
179 We use the minimum memory size for some ethercard product lines, iff we can't
180 distinguish models. You can increase the packet buffer size by setting
181 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
182 E1010 starts at 0x100 and ends at 0x2000.
183 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
184 E2010 starts at 0x100 and ends at 0x4000.
185 E2010-x starts at 0x100 and ends at 0xffff. */
186
187static int __init do_ne_probe(struct net_device *dev)
188{
f0e93c10 189 unsigned long base_addr = dev->base_addr;
1c08bf10 190#ifdef NEEDS_PORTLIST
1da177e4
LT		 191 int orig_irq = dev->irq;
192#endif
193
194 SET_MODULE_OWNER(dev);
195
196 /* First check any supplied i/o locations. User knows best. <cough> */
197 if (base_addr > 0x1ff) /* Check a single specified location. */
198 return ne_probe1(dev, base_addr);
199 else if (base_addr != 0) /* Don't probe at all. */
200 return -ENXIO;
201
202 /* Then look for any installed ISAPnP clones */
203 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
204 return 0;
205
1c08bf10 206#ifdef NEEDS_PORTLIST
1da177e4
LT		 207 /* Last resort. The semi-risky ISA auto-probe. */
208 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
209 int ioaddr = netcard_portlist[base_addr];
210 dev->irq = orig_irq;
211 if (ne_probe1(dev, ioaddr) == 0)
212 return 0;
213 }
214#endif
215
216 return -ENODEV;
217}
218
1da177e4
LT		 219#ifndef MODULE
220struct net_device * __init ne_probe(int unit)
221{
222 struct net_device *dev = alloc_ei_netdev();
223 int err;
224
225 if (!dev)
226 return ERR_PTR(-ENOMEM);
227
228 sprintf(dev->name, "eth%d", unit);
229 netdev_boot_setup_check(dev);
230
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
f0e93c10 286static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
1da177e4
LT		 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
f0e93c10 325 printk(KERN_INFO "NE*000 ethercard probe at %#3lx:", ioaddr);
1da177e4
LT		 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)
ff5688ae 344 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
1da177e4
LT		 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;
aedc0e52
SS		 398
399 /*
400 * Realtek RTL8019AS datasheet says that the PSTOP register
401 * shouldn't exceed 0x60 in 8-bit mode.
402 * This chip can be identified by reading the signature from
403 * the remote byte count registers (otherwise write-only)...
404 */
405 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
406 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
407 inb(ioaddr + EN0_RCNTHI) == 0x70)
408 stop_page = 0x60;
409 else
410 stop_page = NESM_STOP_PG;
1da177e4
LT		 411 } else {
412 start_page = NE1SM_START_PG;
aedc0e52 413 stop_page = NE1SM_STOP_PG;
1da177e4
LT		 414 }
415
416#if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
417 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
418 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
419#else
420 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
421#endif
422 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
423 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
424
425 /* Set up the rest of the parameters. */
426 if (neX000 || bad_card || copam) {
427 name = (wordlength == 2) ? "NE2000" : "NE1000";
428 }
429 else if (ctron)
430 {
431 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
432 start_page = 0x01;
433 stop_page = (wordlength == 2) ? 0x40 : 0x20;
434 }
435 else
436 {
437#ifdef SUPPORT_NE_BAD_CLONES
438 /* Ack! Well, there might be a *bad* NE*000 clone there.
439 Check for total bogus addresses. */
440 for (i = 0; bad_clone_list[i].name8; i++)
441 {
442 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
443 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
444 SA_prom[2] == bad_clone_list[i].SAprefix[2])
445 {
446 if (wordlength == 2)
447 {
448 name = bad_clone_list[i].name16;
449 } else {
450 name = bad_clone_list[i].name8;
451 }
452 break;
453 }
454 }
455 if (bad_clone_list[i].name8 == NULL)
456 {
457 printk(" not found (invalid signature %2.2x %2.2x).\n",
458 SA_prom[14], SA_prom[15]);
459 ret = -ENXIO;
460 goto err_out;
461 }
462#else
463 printk(" not found.\n");
464 ret = -ENXIO;
465 goto err_out;
466#endif
467 }
468
469 if (dev->irq < 2)
470 {
471 unsigned long cookie = probe_irq_on();
472 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
473 outb_p(0x00, ioaddr + EN0_RCNTLO);
474 outb_p(0x00, ioaddr + EN0_RCNTHI);
475 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
476 mdelay(10); /* wait 10ms for interrupt to propagate */
477 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
478 dev->irq = probe_irq_off(cookie);
479 if (ei_debug > 2)
480 printk(" autoirq is %d\n", dev->irq);
481 } else if (dev->irq == 2)
482 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
483 or don't know which one to set. */
484 dev->irq = 9;
485
486 if (! dev->irq) {
487 printk(" failed to detect IRQ line.\n");
488 ret = -EAGAIN;
489 goto err_out;
490 }
491
492 /* Snarf the interrupt now. There's no point in waiting since we cannot
493 share and the board will usually be enabled. */
494 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
495 if (ret) {
496 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
497 goto err_out;
498 }
499
500 dev->base_addr = ioaddr;
501
502#ifdef CONFIG_PLAT_MAPPI
503 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
504 ioaddr + E8390_CMD); /* 0x61 */
505 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
506 dev->dev_addr[i] = SA_prom[i]
507 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
508 printk(" %2.2x", SA_prom[i]);
509 }
510#else
511 for(i = 0; i < ETHER_ADDR_LEN; i++) {
512 printk(" %2.2x", SA_prom[i]);
513 dev->dev_addr[i] = SA_prom[i];
514 }
515#endif
516
f0e93c10 517 printk("\n");
1da177e4
LT		 518
519 ei_status.name = name;
520 ei_status.tx_start_page = start_page;
521 ei_status.stop_page = stop_page;
9cc975e0 522
aedc0e52
SS		 523 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
524 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
1da177e4
LT		 525
526 ei_status.rx_start_page = start_page + TX_PAGES;
527#ifdef PACKETBUF_MEMSIZE
528 /* Allow the packet buffer size to be overridden by know-it-alls. */
529 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
530#endif
531
532 ei_status.reset_8390 = &ne_reset_8390;
533 ei_status.block_input = &ne_block_input;
534 ei_status.block_output = &ne_block_output;
535 ei_status.get_8390_hdr = &ne_get_8390_hdr;
536 ei_status.priv = 0;
537 dev->open = &ne_open;
538 dev->stop = &ne_close;
539#ifdef CONFIG_NET_POLL_CONTROLLER
540 dev->poll_controller = ei_poll;
541#endif
542 NS8390_init(dev, 0);
b1fc5505 543
544 ret = register_netdev(dev);
545 if (ret)
546 goto out_irq;
f0e93c10
AN		 547 printk(KERN_INFO "%s: %s found at %#lx, using IRQ %d.\n",
548 dev->name, name, ioaddr, dev->irq);
1da177e4
LT		 549 return 0;
550
b1fc5505 551out_irq:
552 free_irq(dev->irq, dev);
1da177e4
LT		 553err_out:
554 release_region(ioaddr, NE_IO_EXTENT);
555 return ret;
556}
557
558static int ne_open(struct net_device *dev)
559{
560 ei_open(dev);
561 return 0;
562}
563
564static int ne_close(struct net_device *dev)
565{
566 if (ei_debug > 1)
567 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
568 ei_close(dev);
569 return 0;
570}
571
572/* Hard reset the card. This used to pause for the same period that a
573 8390 reset command required, but that shouldn't be necessary. */
574
575static void ne_reset_8390(struct net_device *dev)
576{
577 unsigned long reset_start_time = jiffies;
578
579 if (ei_debug > 1)
580 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
581
582 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
583 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
584
585 ei_status.txing = 0;
586 ei_status.dmaing = 0;
587
588 /* This check _should_not_ be necessary, omit eventually. */
589 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
ff5688ae 590 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
1da177e4
LT		 591 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
592 break;
593 }
594 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
595}
596
597/* Grab the 8390 specific header. Similar to the block_input routine, but
598 we don't need to be concerned with ring wrap as the header will be at
599 the start of a page, so we optimize accordingly. */
600
601static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
602{
603 int nic_base = dev->base_addr;
604
605 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
606
607 if (ei_status.dmaing)
608 {
609 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
610 "[DMAstat:%d][irqlock:%d].\n",
611 dev->name, ei_status.dmaing, ei_status.irqlock);
612 return;
613 }
614
615 ei_status.dmaing |= 0x01;
616 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
617 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
618 outb_p(0, nic_base + EN0_RCNTHI);
619 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
620 outb_p(ring_page, nic_base + EN0_RSARHI);
621 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
622
623 if (ei_status.word16)
624 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
625 else
626 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
627
628 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
629 ei_status.dmaing &= ~0x01;
630
631 le16_to_cpus(&hdr->count);
632}
633
634/* Block input and output, similar to the Crynwr packet driver. If you
635 are porting to a new ethercard, look at the packet driver source for hints.
636 The NEx000 doesn't share the on-board packet memory -- you have to put
637 the packet out through the "remote DMA" dataport using outb. */
638
639static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
640{
641#ifdef NE_SANITY_CHECK
642 int xfer_count = count;
643#endif
644 int nic_base = dev->base_addr;
645 char *buf = skb->data;
646
647 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
648 if (ei_status.dmaing)
649 {
650 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
651 "[DMAstat:%d][irqlock:%d].\n",
652 dev->name, ei_status.dmaing, ei_status.irqlock);
653 return;
654 }
655 ei_status.dmaing |= 0x01;
656 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
657 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
658 outb_p(count >> 8, nic_base + EN0_RCNTHI);
659 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
660 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
661 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
662 if (ei_status.word16)
663 {
664 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
665 if (count & 0x01)
666 {
667 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
668#ifdef NE_SANITY_CHECK
669 xfer_count++;
670#endif
671 }
672 } else {
673 insb(NE_BASE + NE_DATAPORT, buf, count);
674 }
675
676#ifdef NE_SANITY_CHECK
677 /* This was for the ALPHA version only, but enough people have
678 been encountering problems so it is still here. If you see
679 this message you either 1) have a slightly incompatible clone
680 or 2) have noise/speed problems with your bus. */
681
682 if (ei_debug > 1)
683 {
684 /* DMA termination address check... */
685 int addr, tries = 20;
686 do {
687 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
688 -- it's broken for Rx on some cards! */
689 int high = inb_p(nic_base + EN0_RSARHI);
690 int low = inb_p(nic_base + EN0_RSARLO);
691 addr = (high << 8) + low;
692 if (((ring_offset + xfer_count) & 0xff) == low)
693 break;
694 } while (--tries > 0);
695 if (tries <= 0)
696 printk(KERN_WARNING "%s: RX transfer address mismatch,"
697 "%#4.4x (expected) vs. %#4.4x (actual).\n",
698 dev->name, ring_offset + xfer_count, addr);
699 }
700#endif
701 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
702 ei_status.dmaing &= ~0x01;
703}
704
705static void ne_block_output(struct net_device *dev, int count,
706 const unsigned char *buf, const int start_page)
707{
708 int nic_base = NE_BASE;
709 unsigned long dma_start;
710#ifdef NE_SANITY_CHECK
711 int retries = 0;
712#endif
713
714 /* Round the count up for word writes. Do we need to do this?
715 What effect will an odd byte count have on the 8390?
716 I should check someday. */
717
718 if (ei_status.word16 && (count & 0x01))
719 count++;
720
721 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
722 if (ei_status.dmaing)
723 {
724 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
725 "[DMAstat:%d][irqlock:%d]\n",
726 dev->name, ei_status.dmaing, ei_status.irqlock);
727 return;
728 }
729 ei_status.dmaing |= 0x01;
730 /* We should already be in page 0, but to be safe... */
731 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
732
733#ifdef NE_SANITY_CHECK
734retry:
735#endif
736
737#ifdef NE8390_RW_BUGFIX
738 /* Handle the read-before-write bug the same way as the
739 Crynwr packet driver -- the NatSemi method doesn't work.
740 Actually this doesn't always work either, but if you have
741 problems with your NEx000 this is better than nothing! */
742
743 outb_p(0x42, nic_base + EN0_RCNTLO);
744 outb_p(0x00, nic_base + EN0_RCNTHI);
745 outb_p(0x42, nic_base + EN0_RSARLO);
746 outb_p(0x00, nic_base + EN0_RSARHI);
747 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
748 /* Make certain that the dummy read has occurred. */
749 udelay(6);
750#endif
751
752 outb_p(ENISR_RDC, nic_base + EN0_ISR);
753
754 /* Now the normal output. */
755 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
756 outb_p(count >> 8, nic_base + EN0_RCNTHI);
757 outb_p(0x00, nic_base + EN0_RSARLO);
758 outb_p(start_page, nic_base + EN0_RSARHI);
759
760 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
761 if (ei_status.word16) {
762 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
763 } else {
764 outsb(NE_BASE + NE_DATAPORT, buf, count);
765 }
766
767 dma_start = jiffies;
768
769#ifdef NE_SANITY_CHECK
770 /* This was for the ALPHA version only, but enough people have
771 been encountering problems so it is still here. */
772
773 if (ei_debug > 1)
774 {
775 /* DMA termination address check... */
776 int addr, tries = 20;
777 do {
778 int high = inb_p(nic_base + EN0_RSARHI);
779 int low = inb_p(nic_base + EN0_RSARLO);
780 addr = (high << 8) + low;
781 if ((start_page << 8) + count == addr)
782 break;
783 } while (--tries > 0);
784
785 if (tries <= 0)
786 {
787 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
788 "%#4.4x (expected) vs. %#4.4x (actual).\n",
789 dev->name, (start_page << 8) + count, addr);
790 if (retries++ == 0)
791 goto retry;
792 }
793 }
794#endif
795
796 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
ff5688ae 797 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
1da177e4
LT		 798 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
799 ne_reset_8390(dev);
800 NS8390_init(dev,1);
801 break;
802 }
803
804 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
805 ei_status.dmaing &= ~0x01;
806 return;
807}
808
a4d542b9
AN		 809static int __init ne_drv_probe(struct platform_device *pdev)
810{
811 struct net_device *dev;
812 struct resource *res;
813 int err, irq;
814
815 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
816 irq = platform_get_irq(pdev, 0);
817 if (!res || irq < 0)
818 return -ENODEV;
819
820 dev = alloc_ei_netdev();
821 if (!dev)
822 return -ENOMEM;
823 dev->irq = irq;
824 dev->base_addr = res->start;
825 err = do_ne_probe(dev);
826 if (err) {
827 free_netdev(dev);
828 return err;
829 }
830 platform_set_drvdata(pdev, dev);
831 return 0;
832}
833
834static int __exit ne_drv_remove(struct platform_device *pdev)
835{
836 struct net_device *dev = platform_get_drvdata(pdev);
837
838 unregister_netdev(dev);
839 free_irq(dev->irq, dev);
840 release_region(dev->base_addr, NE_IO_EXTENT);
841 free_netdev(dev);
842 return 0;
843}
844
845#ifdef CONFIG_PM
846static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
847{
848 struct net_device *dev = platform_get_drvdata(pdev);
849
850 if (netif_running(dev))
851 netif_device_detach(dev);
852 return 0;
853}
854
855static int ne_drv_resume(struct platform_device *pdev)
856{
857 struct net_device *dev = platform_get_drvdata(pdev);
858
859 if (netif_running(dev)) {
860 ne_reset_8390(dev);
861 NS8390_init(dev, 1);
862 netif_device_attach(dev);
863 }
864 return 0;
865}
866#else
867#define ne_drv_suspend NULL
868#define ne_drv_resume NULL
869#endif
870
871static struct platform_driver ne_driver = {
872 .remove = __exit_p(ne_drv_remove),
873 .suspend = ne_drv_suspend,
874 .resume = ne_drv_resume,
875 .driver = {
876 .name = DRV_NAME,
877 .owner = THIS_MODULE,
878 },
879};
880
881static int __init ne_init(void)
882{
883 return platform_driver_probe(&ne_driver, ne_drv_probe);
884}
885
886static void __exit ne_exit(void)
887{
888 platform_driver_unregister(&ne_driver);
889}
6aa20a22 890
1da177e4
LT		 891#ifdef MODULE
892#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
893static struct net_device *dev_ne[MAX_NE_CARDS];
894static int io[MAX_NE_CARDS];
895static int irq[MAX_NE_CARDS];
896static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
897
898module_param_array(io, int, NULL, 0);
899module_param_array(irq, int, NULL, 0);
900module_param_array(bad, int, NULL, 0);
901MODULE_PARM_DESC(io, "I/O base address(es),required");
902MODULE_PARM_DESC(irq, "IRQ number(s)");
903MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
904MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
905MODULE_LICENSE("GPL");
906
907/* This is set up so that no ISA autoprobe takes place. We can't guarantee
908that the ne2k probe is the last 8390 based probe to take place (as it
909is at boot) and so the probe will get confused by any other 8390 cards.
910ISA device autoprobes on a running machine are not recommended anyway. */
911
5d1f16c6 912int __init init_module(void)
1da177e4
LT		 913{
914 int this_dev, found = 0;
a4d542b9 915 int plat_found = !ne_init();
1da177e4
LT		 916
917 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
918 struct net_device *dev = alloc_ei_netdev();
919 if (!dev)
920 break;
921 dev->irq = irq[this_dev];
922 dev->mem_end = bad[this_dev];
923 dev->base_addr = io[this_dev];
924 if (do_ne_probe(dev) == 0) {
b1fc5505 925 dev_ne[found++] = dev;
926 continue;
1da177e4
LT		 927 }
928 free_netdev(dev);
a4d542b9 929 if (found || plat_found)
1da177e4
LT		 930 break;
931 if (io[this_dev] != 0)
932 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
933 else
934 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
935 return -ENXIO;
936 }
a4d542b9 937 if (found || plat_found)
1da177e4
LT		 938 return 0;
939 return -ENODEV;
940}
941
64916f1e
DV		 942static void cleanup_card(struct net_device *dev)
943{
944 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
945 if (idev)
946 pnp_device_detach(idev);
947 free_irq(dev->irq, dev);
948 release_region(dev->base_addr, NE_IO_EXTENT);
949}
950
afc8eb46 951void __exit cleanup_module(void)
1da177e4
LT		 952{
953 int this_dev;
954
a4d542b9 955 ne_exit();
1da177e4
LT		 956 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
957 struct net_device *dev = dev_ne[this_dev];
958 if (dev) {
959 unregister_netdev(dev);
960 cleanup_card(dev);
961 free_netdev(dev);
962 }
963 }
964}
a4d542b9
AN		 965#else /* MODULE */
966module_init(ne_init);
967module_exit(ne_exit);
1da177e4 968#endif /* MODULE */
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