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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>
Marcelo Feitoza Parisiff5688a2006-01-09 18:37:15 -080053#include <linux/jiffies.h>
Atsushi Nemotoa4d542b2007-05-01 00:27:31 +090054#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
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
Atsushi Nemoto1c08bf12007-05-01 00:27:49 +090077#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
Linus Torvalds1da177e2005-04-16 15:20:36 -070082/* A zero-terminated list of I/O addresses to be probed at boot. */
Atsushi Nemoto1c08bf12007-05-01 00:27:49 +090083#ifdef NEEDS_PORTLIST
Linus Torvalds1da177e2005-04-16 15:20:36 -070084static 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 */
Ralf Baechle9cc975e2005-10-10 14:51:21 +0100121#if defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
122 {"RBHMA4X00-RTL8019", "RBHMA4X00/RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
123#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 {"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
Olaf Hering44456d32005-07-27 11:45:17 -0700142#if defined(CONFIG_PLAT_MAPPI)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143# define DCR_VAL 0x4b
Sergei Shtylyovaedc0e52006-05-09 00:58:28 +0400144#elif defined(CONFIG_PLAT_OAKS32R) || \
145 defined(CONFIG_TOSHIBA_RBTX4927) || defined(CONFIG_TOSHIBA_RBTX4938)
146# define DCR_VAL 0x48 /* 8-bit mode */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147#else
148# define DCR_VAL 0x49
149#endif
150
Atsushi Nemotof0e93c12007-05-01 00:27:39 +0900151static int ne_probe1(struct net_device *dev, unsigned long ioaddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152static 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
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400165
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166/* 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{
Atsushi Nemotof0e93c12007-05-01 00:27:39 +0900189 unsigned long base_addr = dev->base_addr;
Atsushi Nemoto1c08bf12007-05-01 00:27:49 +0900190#ifdef NEEDS_PORTLIST
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 int orig_irq = dev->irq;
192#endif
193
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 /* First check any supplied i/o locations. User knows best. <cough> */
195 if (base_addr > 0x1ff) /* Check a single specified location. */
196 return ne_probe1(dev, base_addr);
197 else if (base_addr != 0) /* Don't probe at all. */
198 return -ENXIO;
199
200 /* Then look for any installed ISAPnP clones */
201 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
202 return 0;
203
Atsushi Nemoto1c08bf12007-05-01 00:27:49 +0900204#ifdef NEEDS_PORTLIST
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205 /* Last resort. The semi-risky ISA auto-probe. */
206 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
207 int ioaddr = netcard_portlist[base_addr];
208 dev->irq = orig_irq;
209 if (ne_probe1(dev, ioaddr) == 0)
210 return 0;
211 }
212#endif
213
214 return -ENODEV;
215}
216
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217#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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 return dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233out:
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
Atsushi Nemotof0e93c12007-05-01 00:27:39 +0900284static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285{
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
Atsushi Nemotof0e93c12007-05-01 00:27:39 +0900323 printk(KERN_INFO "NE*000 ethercard probe at %#3lx:", ioaddr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324
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)
Marcelo Feitoza Parisiff5688a2006-01-09 18:37:15 -0800342 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 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
Denis Chengff8ac602007-09-02 18:30:18 +0800378 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 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;
Sergei Shtylyovaedc0e52006-05-09 00:58:28 +0400396
397 /*
398 * Realtek RTL8019AS datasheet says that the PSTOP register
399 * shouldn't exceed 0x60 in 8-bit mode.
400 * This chip can be identified by reading the signature from
401 * the remote byte count registers (otherwise write-only)...
402 */
403 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
404 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
405 inb(ioaddr + EN0_RCNTHI) == 0x70)
406 stop_page = 0x60;
407 else
408 stop_page = NESM_STOP_PG;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 } else {
410 start_page = NE1SM_START_PG;
Sergei Shtylyovaedc0e52006-05-09 00:58:28 +0400411 stop_page = NE1SM_STOP_PG;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 }
413
414#if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
415 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
416 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
417#else
418 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
419#endif
420 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
421 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
422
423 /* Set up the rest of the parameters. */
424 if (neX000 || bad_card || copam) {
425 name = (wordlength == 2) ? "NE2000" : "NE1000";
426 }
427 else if (ctron)
428 {
429 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
430 start_page = 0x01;
431 stop_page = (wordlength == 2) ? 0x40 : 0x20;
432 }
433 else
434 {
435#ifdef SUPPORT_NE_BAD_CLONES
436 /* Ack! Well, there might be a *bad* NE*000 clone there.
437 Check for total bogus addresses. */
438 for (i = 0; bad_clone_list[i].name8; i++)
439 {
440 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
441 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
442 SA_prom[2] == bad_clone_list[i].SAprefix[2])
443 {
444 if (wordlength == 2)
445 {
446 name = bad_clone_list[i].name16;
447 } else {
448 name = bad_clone_list[i].name8;
449 }
450 break;
451 }
452 }
453 if (bad_clone_list[i].name8 == NULL)
454 {
455 printk(" not found (invalid signature %2.2x %2.2x).\n",
456 SA_prom[14], SA_prom[15]);
457 ret = -ENXIO;
458 goto err_out;
459 }
460#else
461 printk(" not found.\n");
462 ret = -ENXIO;
463 goto err_out;
464#endif
465 }
466
467 if (dev->irq < 2)
468 {
469 unsigned long cookie = probe_irq_on();
470 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
471 outb_p(0x00, ioaddr + EN0_RCNTLO);
472 outb_p(0x00, ioaddr + EN0_RCNTHI);
473 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
474 mdelay(10); /* wait 10ms for interrupt to propagate */
475 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
476 dev->irq = probe_irq_off(cookie);
477 if (ei_debug > 2)
478 printk(" autoirq is %d\n", dev->irq);
479 } else if (dev->irq == 2)
480 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
481 or don't know which one to set. */
482 dev->irq = 9;
483
484 if (! dev->irq) {
485 printk(" failed to detect IRQ line.\n");
486 ret = -EAGAIN;
487 goto err_out;
488 }
489
490 /* Snarf the interrupt now. There's no point in waiting since we cannot
491 share and the board will usually be enabled. */
492 ret = request_irq(dev->irq, ei_interrupt, 0, name, dev);
493 if (ret) {
494 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
495 goto err_out;
496 }
497
498 dev->base_addr = ioaddr;
499
500#ifdef CONFIG_PLAT_MAPPI
501 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
502 ioaddr + E8390_CMD); /* 0x61 */
503 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
504 dev->dev_addr[i] = SA_prom[i]
505 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
506 printk(" %2.2x", SA_prom[i]);
507 }
508#else
509 for(i = 0; i < ETHER_ADDR_LEN; i++) {
510 printk(" %2.2x", SA_prom[i]);
511 dev->dev_addr[i] = SA_prom[i];
512 }
513#endif
514
Atsushi Nemotof0e93c12007-05-01 00:27:39 +0900515 printk("\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516
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
Sergei Shtylyovaedc0e52006-05-09 00:58:28 +0400521 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
522 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523
524 ei_status.rx_start_page = start_page + TX_PAGES;
525#ifdef PACKETBUF_MEMSIZE
526 /* Allow the packet buffer size to be overridden by know-it-alls. */
527 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
528#endif
529
530 ei_status.reset_8390 = &ne_reset_8390;
531 ei_status.block_input = &ne_block_input;
532 ei_status.block_output = &ne_block_output;
533 ei_status.get_8390_hdr = &ne_get_8390_hdr;
534 ei_status.priv = 0;
535 dev->open = &ne_open;
536 dev->stop = &ne_close;
537#ifdef CONFIG_NET_POLL_CONTROLLER
538 dev->poll_controller = ei_poll;
539#endif
540 NS8390_init(dev, 0);
b1fc5502005-05-12 20:11:55 -0400541
542 ret = register_netdev(dev);
543 if (ret)
544 goto out_irq;
Atsushi Nemotof0e93c12007-05-01 00:27:39 +0900545 printk(KERN_INFO "%s: %s found at %#lx, using IRQ %d.\n",
546 dev->name, name, ioaddr, dev->irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547 return 0;
548
b1fc5502005-05-12 20:11:55 -0400549out_irq:
550 free_irq(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551err_out:
552 release_region(ioaddr, NE_IO_EXTENT);
553 return ret;
554}
555
556static int ne_open(struct net_device *dev)
557{
558 ei_open(dev);
559 return 0;
560}
561
562static int ne_close(struct net_device *dev)
563{
564 if (ei_debug > 1)
565 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
566 ei_close(dev);
567 return 0;
568}
569
570/* Hard reset the card. This used to pause for the same period that a
571 8390 reset command required, but that shouldn't be necessary. */
572
573static void ne_reset_8390(struct net_device *dev)
574{
575 unsigned long reset_start_time = jiffies;
576
577 if (ei_debug > 1)
578 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
579
580 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
581 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
582
583 ei_status.txing = 0;
584 ei_status.dmaing = 0;
585
586 /* This check _should_not_ be necessary, omit eventually. */
587 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
Marcelo Feitoza Parisiff5688a2006-01-09 18:37:15 -0800588 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
590 break;
591 }
592 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
593}
594
595/* Grab the 8390 specific header. Similar to the block_input routine, but
596 we don't need to be concerned with ring wrap as the header will be at
597 the start of a page, so we optimize accordingly. */
598
599static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
600{
601 int nic_base = dev->base_addr;
602
603 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
604
605 if (ei_status.dmaing)
606 {
607 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
608 "[DMAstat:%d][irqlock:%d].\n",
609 dev->name, ei_status.dmaing, ei_status.irqlock);
610 return;
611 }
612
613 ei_status.dmaing |= 0x01;
614 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
615 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
616 outb_p(0, nic_base + EN0_RCNTHI);
617 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
618 outb_p(ring_page, nic_base + EN0_RSARHI);
619 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
620
621 if (ei_status.word16)
622 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
623 else
624 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
625
626 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
627 ei_status.dmaing &= ~0x01;
628
629 le16_to_cpus(&hdr->count);
630}
631
632/* Block input and output, similar to the Crynwr packet driver. If you
633 are porting to a new ethercard, look at the packet driver source for hints.
634 The NEx000 doesn't share the on-board packet memory -- you have to put
635 the packet out through the "remote DMA" dataport using outb. */
636
637static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
638{
639#ifdef NE_SANITY_CHECK
640 int xfer_count = count;
641#endif
642 int nic_base = dev->base_addr;
643 char *buf = skb->data;
644
645 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
646 if (ei_status.dmaing)
647 {
648 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
649 "[DMAstat:%d][irqlock:%d].\n",
650 dev->name, ei_status.dmaing, ei_status.irqlock);
651 return;
652 }
653 ei_status.dmaing |= 0x01;
654 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
655 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
656 outb_p(count >> 8, nic_base + EN0_RCNTHI);
657 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
658 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
659 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
660 if (ei_status.word16)
661 {
662 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
663 if (count & 0x01)
664 {
665 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
666#ifdef NE_SANITY_CHECK
667 xfer_count++;
668#endif
669 }
670 } else {
671 insb(NE_BASE + NE_DATAPORT, buf, count);
672 }
673
674#ifdef NE_SANITY_CHECK
675 /* This was for the ALPHA version only, but enough people have
676 been encountering problems so it is still here. If you see
677 this message you either 1) have a slightly incompatible clone
678 or 2) have noise/speed problems with your bus. */
679
680 if (ei_debug > 1)
681 {
682 /* DMA termination address check... */
683 int addr, tries = 20;
684 do {
685 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
686 -- it's broken for Rx on some cards! */
687 int high = inb_p(nic_base + EN0_RSARHI);
688 int low = inb_p(nic_base + EN0_RSARLO);
689 addr = (high << 8) + low;
690 if (((ring_offset + xfer_count) & 0xff) == low)
691 break;
692 } while (--tries > 0);
693 if (tries <= 0)
694 printk(KERN_WARNING "%s: RX transfer address mismatch,"
695 "%#4.4x (expected) vs. %#4.4x (actual).\n",
696 dev->name, ring_offset + xfer_count, addr);
697 }
698#endif
699 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
700 ei_status.dmaing &= ~0x01;
701}
702
703static void ne_block_output(struct net_device *dev, int count,
704 const unsigned char *buf, const int start_page)
705{
706 int nic_base = NE_BASE;
707 unsigned long dma_start;
708#ifdef NE_SANITY_CHECK
709 int retries = 0;
710#endif
711
712 /* Round the count up for word writes. Do we need to do this?
713 What effect will an odd byte count have on the 8390?
714 I should check someday. */
715
716 if (ei_status.word16 && (count & 0x01))
717 count++;
718
719 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
720 if (ei_status.dmaing)
721 {
722 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
723 "[DMAstat:%d][irqlock:%d]\n",
724 dev->name, ei_status.dmaing, ei_status.irqlock);
725 return;
726 }
727 ei_status.dmaing |= 0x01;
728 /* We should already be in page 0, but to be safe... */
729 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
730
731#ifdef NE_SANITY_CHECK
732retry:
733#endif
734
735#ifdef NE8390_RW_BUGFIX
736 /* Handle the read-before-write bug the same way as the
737 Crynwr packet driver -- the NatSemi method doesn't work.
738 Actually this doesn't always work either, but if you have
739 problems with your NEx000 this is better than nothing! */
740
741 outb_p(0x42, nic_base + EN0_RCNTLO);
742 outb_p(0x00, nic_base + EN0_RCNTHI);
743 outb_p(0x42, nic_base + EN0_RSARLO);
744 outb_p(0x00, nic_base + EN0_RSARHI);
745 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
746 /* Make certain that the dummy read has occurred. */
747 udelay(6);
748#endif
749
750 outb_p(ENISR_RDC, nic_base + EN0_ISR);
751
752 /* Now the normal output. */
753 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
754 outb_p(count >> 8, nic_base + EN0_RCNTHI);
755 outb_p(0x00, nic_base + EN0_RSARLO);
756 outb_p(start_page, nic_base + EN0_RSARHI);
757
758 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
759 if (ei_status.word16) {
760 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
761 } else {
762 outsb(NE_BASE + NE_DATAPORT, buf, count);
763 }
764
765 dma_start = jiffies;
766
767#ifdef NE_SANITY_CHECK
768 /* This was for the ALPHA version only, but enough people have
769 been encountering problems so it is still here. */
770
771 if (ei_debug > 1)
772 {
773 /* DMA termination address check... */
774 int addr, tries = 20;
775 do {
776 int high = inb_p(nic_base + EN0_RSARHI);
777 int low = inb_p(nic_base + EN0_RSARLO);
778 addr = (high << 8) + low;
779 if ((start_page << 8) + count == addr)
780 break;
781 } while (--tries > 0);
782
783 if (tries <= 0)
784 {
785 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
786 "%#4.4x (expected) vs. %#4.4x (actual).\n",
787 dev->name, (start_page << 8) + count, addr);
788 if (retries++ == 0)
789 goto retry;
790 }
791 }
792#endif
793
794 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
Marcelo Feitoza Parisiff5688a2006-01-09 18:37:15 -0800795 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
797 ne_reset_8390(dev);
798 NS8390_init(dev,1);
799 break;
800 }
801
802 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
803 ei_status.dmaing &= ~0x01;
804 return;
805}
806
Atsushi Nemotoa4d542b2007-05-01 00:27:31 +0900807static int __init ne_drv_probe(struct platform_device *pdev)
808{
809 struct net_device *dev;
810 struct resource *res;
811 int err, irq;
812
813 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
814 irq = platform_get_irq(pdev, 0);
815 if (!res || irq < 0)
816 return -ENODEV;
817
818 dev = alloc_ei_netdev();
819 if (!dev)
820 return -ENOMEM;
821 dev->irq = irq;
822 dev->base_addr = res->start;
823 err = do_ne_probe(dev);
824 if (err) {
825 free_netdev(dev);
826 return err;
827 }
828 platform_set_drvdata(pdev, dev);
829 return 0;
830}
831
832static int __exit ne_drv_remove(struct platform_device *pdev)
833{
834 struct net_device *dev = platform_get_drvdata(pdev);
835
836 unregister_netdev(dev);
837 free_irq(dev->irq, dev);
838 release_region(dev->base_addr, NE_IO_EXTENT);
839 free_netdev(dev);
840 return 0;
841}
842
843#ifdef CONFIG_PM
844static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
845{
846 struct net_device *dev = platform_get_drvdata(pdev);
847
848 if (netif_running(dev))
849 netif_device_detach(dev);
850 return 0;
851}
852
853static int ne_drv_resume(struct platform_device *pdev)
854{
855 struct net_device *dev = platform_get_drvdata(pdev);
856
857 if (netif_running(dev)) {
858 ne_reset_8390(dev);
859 NS8390_init(dev, 1);
860 netif_device_attach(dev);
861 }
862 return 0;
863}
864#else
865#define ne_drv_suspend NULL
866#define ne_drv_resume NULL
867#endif
868
869static struct platform_driver ne_driver = {
870 .remove = __exit_p(ne_drv_remove),
871 .suspend = ne_drv_suspend,
872 .resume = ne_drv_resume,
873 .driver = {
874 .name = DRV_NAME,
875 .owner = THIS_MODULE,
876 },
877};
878
879static int __init ne_init(void)
880{
881 return platform_driver_probe(&ne_driver, ne_drv_probe);
882}
883
884static void __exit ne_exit(void)
885{
886 platform_driver_unregister(&ne_driver);
887}
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400888
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889#ifdef MODULE
890#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
891static struct net_device *dev_ne[MAX_NE_CARDS];
892static int io[MAX_NE_CARDS];
893static int irq[MAX_NE_CARDS];
894static int bad[MAX_NE_CARDS]; /* 0xbad = bad sig or no reset ack */
895
896module_param_array(io, int, NULL, 0);
897module_param_array(irq, int, NULL, 0);
898module_param_array(bad, int, NULL, 0);
899MODULE_PARM_DESC(io, "I/O base address(es),required");
900MODULE_PARM_DESC(irq, "IRQ number(s)");
901MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
902MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
903MODULE_LICENSE("GPL");
904
905/* This is set up so that no ISA autoprobe takes place. We can't guarantee
906that the ne2k probe is the last 8390 based probe to take place (as it
907is at boot) and so the probe will get confused by any other 8390 cards.
908ISA device autoprobes on a running machine are not recommended anyway. */
909
Randy.Dunlap5d1f16c2006-06-10 12:13:35 -0700910int __init init_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911{
912 int this_dev, found = 0;
Atsushi Nemotoa4d542b2007-05-01 00:27:31 +0900913 int plat_found = !ne_init();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914
915 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
916 struct net_device *dev = alloc_ei_netdev();
917 if (!dev)
918 break;
919 dev->irq = irq[this_dev];
920 dev->mem_end = bad[this_dev];
921 dev->base_addr = io[this_dev];
922 if (do_ne_probe(dev) == 0) {
b1fc5502005-05-12 20:11:55 -0400923 dev_ne[found++] = dev;
924 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925 }
926 free_netdev(dev);
Atsushi Nemotoa4d542b2007-05-01 00:27:31 +0900927 if (found || plat_found)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928 break;
929 if (io[this_dev] != 0)
930 printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
931 else
932 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
933 return -ENXIO;
934 }
Atsushi Nemotoa4d542b2007-05-01 00:27:31 +0900935 if (found || plat_found)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936 return 0;
937 return -ENODEV;
938}
939
Denis Vlasenko64916f12006-01-05 22:45:47 -0800940static void cleanup_card(struct net_device *dev)
941{
942 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
943 if (idev)
944 pnp_device_detach(idev);
945 free_irq(dev->irq, dev);
946 release_region(dev->base_addr, NE_IO_EXTENT);
947}
948
Al Viroafc8eb42006-06-14 18:50:53 -0400949void __exit cleanup_module(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950{
951 int this_dev;
952
Atsushi Nemotoa4d542b2007-05-01 00:27:31 +0900953 ne_exit();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700954 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
955 struct net_device *dev = dev_ne[this_dev];
956 if (dev) {
957 unregister_netdev(dev);
958 cleanup_card(dev);
959 free_netdev(dev);
960 }
961 }
962}
Atsushi Nemotoa4d542b2007-05-01 00:27:31 +0900963#else /* MODULE */
964module_init(ne_init);
965module_exit(ne_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966#endif /* MODULE */