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1// SPDX-License-Identifier: GPL-1.0+
2/* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */
3/*
4 Written 1992-94 by Donald Becker.
5
6 Copyright 1993 United States Government as represented by the
7 Director, National Security Agency.
8
9 The author may be reached as becker@scyld.com, or C/O
10 Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
11
12 This driver should work with many programmed-I/O 8390-based ethernet
13 boards. Currently it supports the NE1000, NE2000, many clones,
14 and some Cabletron products.
15
16 Changelog:
17
18 Paul Gortmaker : use ENISR_RDC to monitor Tx PIO uploads, made
19 sanity checks and bad clone support optional.
20 Paul Gortmaker : new reset code, reset card after probe at boot.
21 Paul Gortmaker : multiple card support for module users.
22 Paul Gortmaker : Support for PCI ne2k clones, similar to lance.c
23 Paul Gortmaker : Allow users with bad cards to avoid full probe.
24 Paul Gortmaker : PCI probe changes, more PCI cards supported.
25 rjohnson@analogic.com : Changed init order so an interrupt will only
26 occur after memory is allocated for dev->priv. Deallocated memory
27 last in cleanup_modue()
28 Richard Guenther : Added support for ISAPnP cards
29 Paul Gortmaker : Discontinued PCI support - use ne2k-pci.c instead.
30 Hayato Fujiwara : Add m32r support.
31
32*/
33
34/* Routines for the NatSemi-based designs (NE[12]000). */
35
36static const char version1[] =
37"ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)\n";
38static const char version2[] =
39"Last modified Nov 1, 2000 by Paul Gortmaker\n";
40
41
42#include <linux/module.h>
43#include <linux/kernel.h>
44#include <linux/errno.h>
45#include <linux/isapnp.h>
46#include <linux/init.h>
47#include <linux/interrupt.h>
48#include <linux/delay.h>
49#include <linux/netdevice.h>
50#include <linux/etherdevice.h>
51#include <linux/jiffies.h>
52#include <linux/platform_device.h>
53#include <net/Space.h>
54
55#include <asm/io.h>
56
57#include "8390.h"
58
59#define DRV_NAME "ne"
60
61/* Some defines that people can play with if so inclined. */
62
63/* Do we support clones that don't adhere to 14,15 of the SAprom ? */
64#define SUPPORT_NE_BAD_CLONES
65/* 0xbad = bad sig or no reset ack */
66#define BAD 0xbad
67
68#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
69static struct platform_device *pdev_ne[MAX_NE_CARDS];
70static int io[MAX_NE_CARDS];
71static int irq[MAX_NE_CARDS];
72static int bad[MAX_NE_CARDS];
73static u32 ne_msg_enable;
74
75#ifdef MODULE
76module_param_hw_array(io, int, ioport, NULL, 0);
77module_param_hw_array(irq, int, irq, NULL, 0);
78module_param_array(bad, int, NULL, 0);
79module_param_named(msg_enable, ne_msg_enable, uint, 0444);
80MODULE_PARM_DESC(io, "I/O base address(es),required");
81MODULE_PARM_DESC(irq, "IRQ number(s)");
82MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
83MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
84MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
85MODULE_LICENSE("GPL");
86#endif /* MODULE */
87
88/* Do we perform extra sanity checks on stuff ? */
89/* #define NE_SANITY_CHECK */
90
91/* Do we implement the read before write bugfix ? */
92/* #define NE_RW_BUGFIX */
93
94/* Do we have a non std. amount of memory? (in units of 256 byte pages) */
95/* #define PACKETBUF_MEMSIZE 0x40 */
96
97/* This is set up so that no ISA autoprobe takes place. We can't guarantee
98that the ne2k probe is the last 8390 based probe to take place (as it
99is at boot) and so the probe will get confused by any other 8390 cards.
100ISA device autoprobes on a running machine are not recommended anyway. */
101#if !defined(MODULE) && defined(CONFIG_ISA)
102/* Do we need a portlist for the ISA auto-probe ? */
103#define NEEDS_PORTLIST
104#endif
105
106/* A zero-terminated list of I/O addresses to be probed at boot. */
107#ifdef NEEDS_PORTLIST
108static unsigned int netcard_portlist[] __initdata = {
109 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
110};
111#endif
112
113static struct isapnp_device_id isapnp_clone_list[] __initdata = {
114 { ISAPNP_CARD_ID('A','X','E',0x2011),
115 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
116 (long) "NetGear EA201" },
117 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
118 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
119 (long) "NN NE2000" },
120 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
121 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
122 (long) "Generic PNP" },
123 { } /* terminate list */
124};
125
126MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
127
128#ifdef SUPPORT_NE_BAD_CLONES
129/* A list of bad clones that we none-the-less recognize. */
130static struct { const char *name8, *name16; unsigned char SAprefix[4];}
131bad_clone_list[] __initdata = {
132 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
133 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
134 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
135 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
136 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
137 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
138 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
139 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
140 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
141 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
142 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
143 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
144 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
145#ifdef CONFIG_MACH_TX49XX
146 {"RBHMA4X00-RTL8019", "RBHMA4X00-RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
147#endif
148 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
149 {NULL,}
150};
151#endif
152
153/* ---- No user-serviceable parts below ---- */
154
155#define NE_BASE (dev->base_addr)
156#define NE_CMD 0x00
157#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
158#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
159#define NE_IO_EXTENT 0x20
160
161#define NE1SM_START_PG 0x20 /* First page of TX buffer */
162#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
163#define NESM_START_PG 0x40 /* First page of TX buffer */
164#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
165
166#if defined(CONFIG_MACH_TX49XX)
167# define DCR_VAL 0x48 /* 8-bit mode */
168#elif defined(CONFIG_ATARI) /* 8-bit mode on Atari, normal on Q40 */
169# define DCR_VAL (MACH_IS_ATARI ? 0x48 : 0x49)
170#else
171# define DCR_VAL 0x49
172#endif
173
174static int ne_probe1(struct net_device *dev, unsigned long ioaddr);
175static int ne_probe_isapnp(struct net_device *dev);
176
177static void ne_reset_8390(struct net_device *dev);
178static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
179 int ring_page);
180static void ne_block_input(struct net_device *dev, int count,
181 struct sk_buff *skb, int ring_offset);
182static void ne_block_output(struct net_device *dev, const int count,
183 const unsigned char *buf, const int start_page);
184
185
186/* Probe for various non-shared-memory ethercards.
187
188 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
189 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
190 the SAPROM, while other supposed NE2000 clones must be detected by their
191 SA prefix.
192
193 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
194 mode results in doubled values, which can be detected and compensated for.
195
196 The probe is also responsible for initializing the card and filling
197 in the 'dev' and 'ei_status' structures.
198
199 We use the minimum memory size for some ethercard product lines, iff we can't
200 distinguish models. You can increase the packet buffer size by setting
201 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
202 E1010 starts at 0x100 and ends at 0x2000.
203 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
204 E2010 starts at 0x100 and ends at 0x4000.
205 E2010-x starts at 0x100 and ends at 0xffff. */
206
207static int __init do_ne_probe(struct net_device *dev)
208{
209 unsigned long base_addr = dev->base_addr;
210#ifdef NEEDS_PORTLIST
211 int orig_irq = dev->irq;
212#endif
213
214 /* First check any supplied i/o locations. User knows best. <cough> */
215 if (base_addr > 0x1ff) { /* Check a single specified location. */
216 int ret = ne_probe1(dev, base_addr);
217 if (ret)
218 netdev_warn(dev, "ne.c: No NE*000 card found at "
219 "i/o = %#lx\n", base_addr);
220 return ret;
221 }
222 else if (base_addr != 0) /* Don't probe at all. */
223 return -ENXIO;
224
225 /* Then look for any installed ISAPnP clones */
226 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
227 return 0;
228
229#ifdef NEEDS_PORTLIST
230 /* Last resort. The semi-risky ISA auto-probe. */
231 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
232 int ioaddr = netcard_portlist[base_addr];
233 dev->irq = orig_irq;
234 if (ne_probe1(dev, ioaddr) == 0)
235 return 0;
236 }
237#endif
238
239 return -ENODEV;
240}
241
242static int __init ne_probe_isapnp(struct net_device *dev)
243{
244 int i;
245
246 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
247 struct pnp_dev *idev = NULL;
248
249 while ((idev = pnp_find_dev(NULL,
250 isapnp_clone_list[i].vendor,
251 isapnp_clone_list[i].function,
252 idev))) {
253 /* Avoid already found cards from previous calls */
254 if (pnp_device_attach(idev) < 0)
255 continue;
256 if (pnp_activate_dev(idev) < 0) {
257 pnp_device_detach(idev);
258 continue;
259 }
260 /* if no io and irq, search for next */
261 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
262 pnp_device_detach(idev);
263 continue;
264 }
265 /* found it */
266 dev->base_addr = pnp_port_start(idev, 0);
267 dev->irq = pnp_irq(idev, 0);
268 netdev_info(dev,
269 "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
270 (char *) isapnp_clone_list[i].driver_data,
271 dev->base_addr, dev->irq);
272 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
273 netdev_err(dev,
274 "ne.c: Probe of ISAPnP card at %#lx failed.\n",
275 dev->base_addr);
276 pnp_device_detach(idev);
277 return -ENXIO;
278 }
279 ei_status.priv = (unsigned long)idev;
280 break;
281 }
282 if (!idev)
283 continue;
284 return 0;
285 }
286
287 return -ENODEV;
288}
289
290static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
291{
292 int i;
293 unsigned char SA_prom[32];
294 int wordlength = 2;
295 const char *name = NULL;
296 int start_page, stop_page;
297 int neX000, ctron, copam, bad_card;
298 int reg0, ret;
299 static unsigned version_printed;
300 struct ei_device *ei_local = netdev_priv(dev);
301
302 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
303 return -EBUSY;
304
305 reg0 = inb_p(ioaddr);
306 if (reg0 == 0xFF) {
307 ret = -ENODEV;
308 goto err_out;
309 }
310
311 /* Do a preliminary verification that we have a 8390. */
312 {
313 int regd;
314 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
315 regd = inb_p(ioaddr + 0x0d);
316 outb_p(0xff, ioaddr + 0x0d);
317 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
318 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
319 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
320 outb_p(reg0, ioaddr);
321 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
322 ret = -ENODEV;
323 goto err_out;
324 }
325 }
326
327 if ((ne_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0))
328 netdev_info(dev, "%s%s", version1, version2);
329
330 netdev_info(dev, "NE*000 ethercard probe at %#3lx:", ioaddr);
331
332 /* A user with a poor card that fails to ack the reset, or that
333 does not have a valid 0x57,0x57 signature can still use this
334 without having to recompile. Specifying an i/o address along
335 with an otherwise unused dev->mem_end value of "0xBAD" will
336 cause the driver to skip these parts of the probe. */
337
338 bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD));
339
340 /* Reset card. Who knows what dain-bramaged state it was left in. */
341
342 {
343 unsigned long reset_start_time = jiffies;
344
345 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
346 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
347
348 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
349 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
350 if (bad_card) {
351 pr_cont(" (warning: no reset ack)");
352 break;
353 } else {
354 pr_cont(" not found (no reset ack).\n");
355 ret = -ENODEV;
356 goto err_out;
357 }
358 }
359
360 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
361 }
362
363 /* Read the 16 bytes of station address PROM.
364 We must first initialize registers, similar to NS8390p_init(eifdev, 0).
365 We can't reliably read the SAPROM address without this.
366 (I learned the hard way!). */
367 {
368 struct {unsigned char value, offset; } program_seq[] =
369 {
370 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
371 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
372 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
373 {0x00, EN0_RCNTHI},
374 {0x00, EN0_IMR}, /* Mask completion irq. */
375 {0xFF, EN0_ISR},
376 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
377 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
378 {32, EN0_RCNTLO},
379 {0x00, EN0_RCNTHI},
380 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
381 {0x00, EN0_RSARHI},
382 {E8390_RREAD+E8390_START, E8390_CMD},
383 };
384
385 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
386 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
387
388 }
389 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
390 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
391 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
392 if (SA_prom[i] != SA_prom[i+1])
393 wordlength = 1;
394 }
395
396 if (wordlength == 2)
397 {
398 for (i = 0; i < 16; i++)
399 SA_prom[i] = SA_prom[i+i];
400 /* We must set the 8390 for word mode. */
401 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
402 start_page = NESM_START_PG;
403
404 /*
405 * Realtek RTL8019AS datasheet says that the PSTOP register
406 * shouldn't exceed 0x60 in 8-bit mode.
407 * This chip can be identified by reading the signature from
408 * the remote byte count registers (otherwise write-only)...
409 */
410 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
411 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
412 inb(ioaddr + EN0_RCNTHI) == 0x70)
413 stop_page = 0x60;
414 else
415 stop_page = NESM_STOP_PG;
416 } else {
417 start_page = NE1SM_START_PG;
418 stop_page = NE1SM_STOP_PG;
419 }
420
421 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
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 pr_cont(" 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 pr_cont(" 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 (ne_msg_enable & NETIF_MSG_PROBE)
480 pr_cont(" autoirq is %d", 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 pr_cont(" 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, eip_interrupt, 0, name, dev);
495 if (ret) {
496 pr_cont(" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
497 goto err_out;
498 }
499
500 dev->base_addr = ioaddr;
501
502 eth_hw_addr_set(dev, SA_prom);
503
504 pr_cont("%pM\n", dev->dev_addr);
505
506 ei_status.name = name;
507 ei_status.tx_start_page = start_page;
508 ei_status.stop_page = stop_page;
509
510 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
511 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
512
513 ei_status.rx_start_page = start_page + TX_PAGES;
514#ifdef PACKETBUF_MEMSIZE
515 /* Allow the packet buffer size to be overridden by know-it-alls. */
516 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
517#endif
518
519 ei_status.reset_8390 = &ne_reset_8390;
520 ei_status.block_input = &ne_block_input;
521 ei_status.block_output = &ne_block_output;
522 ei_status.get_8390_hdr = &ne_get_8390_hdr;
523 ei_status.priv = 0;
524
525 dev->netdev_ops = &eip_netdev_ops;
526 NS8390p_init(dev, 0);
527
528 ei_local->msg_enable = ne_msg_enable;
529 ret = register_netdev(dev);
530 if (ret)
531 goto out_irq;
532 netdev_info(dev, "%s found at %#lx, using IRQ %d.\n",
533 name, ioaddr, dev->irq);
534 return 0;
535
536out_irq:
537 free_irq(dev->irq, dev);
538err_out:
539 release_region(ioaddr, NE_IO_EXTENT);
540 return ret;
541}
542
543/* Hard reset the card. This used to pause for the same period that a
544 8390 reset command required, but that shouldn't be necessary. */
545
546static void ne_reset_8390(struct net_device *dev)
547{
548 unsigned long reset_start_time = jiffies;
549 struct ei_device *ei_local = netdev_priv(dev);
550
551 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies);
552
553 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
554 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
555
556 ei_status.txing = 0;
557 ei_status.dmaing = 0;
558
559 /* This check _should_not_ be necessary, omit eventually. */
560 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
561 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
562 netdev_err(dev, "ne_reset_8390() did not complete.\n");
563 break;
564 }
565 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
566}
567
568/* Grab the 8390 specific header. Similar to the block_input routine, but
569 we don't need to be concerned with ring wrap as the header will be at
570 the start of a page, so we optimize accordingly. */
571
572static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
573{
574 int nic_base = dev->base_addr;
575
576 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
577
578 if (ei_status.dmaing)
579 {
580 netdev_err(dev, "DMAing conflict in ne_get_8390_hdr "
581 "[DMAstat:%d][irqlock:%d].\n",
582 ei_status.dmaing, ei_status.irqlock);
583 return;
584 }
585
586 ei_status.dmaing |= 0x01;
587 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
588 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
589 outb_p(0, nic_base + EN0_RCNTHI);
590 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
591 outb_p(ring_page, nic_base + EN0_RSARHI);
592 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
593
594 if (ei_status.word16)
595 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
596 else
597 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
598
599 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
600 ei_status.dmaing &= ~0x01;
601
602 le16_to_cpus(&hdr->count);
603}
604
605/* Block input and output, similar to the Crynwr packet driver. If you
606 are porting to a new ethercard, look at the packet driver source for hints.
607 The NEx000 doesn't share the on-board packet memory -- you have to put
608 the packet out through the "remote DMA" dataport using outb. */
609
610static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
611{
612#ifdef NE_SANITY_CHECK
613 int xfer_count = count;
614 struct ei_device *ei_local = netdev_priv(dev);
615#endif
616 int nic_base = dev->base_addr;
617 char *buf = skb->data;
618
619 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
620 if (ei_status.dmaing)
621 {
622 netdev_err(dev, "DMAing conflict in ne_block_input "
623 "[DMAstat:%d][irqlock:%d].\n",
624 ei_status.dmaing, ei_status.irqlock);
625 return;
626 }
627 ei_status.dmaing |= 0x01;
628 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
629 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
630 outb_p(count >> 8, nic_base + EN0_RCNTHI);
631 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
632 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
633 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
634 if (ei_status.word16)
635 {
636 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
637 if (count & 0x01)
638 {
639 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
640#ifdef NE_SANITY_CHECK
641 xfer_count++;
642#endif
643 }
644 } else {
645 insb(NE_BASE + NE_DATAPORT, buf, count);
646 }
647
648#ifdef NE_SANITY_CHECK
649 /* This was for the ALPHA version only, but enough people have
650 been encountering problems so it is still here. If you see
651 this message you either 1) have a slightly incompatible clone
652 or 2) have noise/speed problems with your bus. */
653
654 if (netif_msg_rx_status(ei_local))
655 {
656 /* DMA termination address check... */
657 int addr, tries = 20;
658 do {
659 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
660 -- it's broken for Rx on some cards! */
661 int high = inb_p(nic_base + EN0_RSARHI);
662 int low = inb_p(nic_base + EN0_RSARLO);
663 addr = (high << 8) + low;
664 if (((ring_offset + xfer_count) & 0xff) == low)
665 break;
666 } while (--tries > 0);
667 if (tries <= 0)
668 netdev_warn(dev, "RX transfer address mismatch,"
669 "%#4.4x (expected) vs. %#4.4x (actual).\n",
670 ring_offset + xfer_count, addr);
671 }
672#endif
673 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
674 ei_status.dmaing &= ~0x01;
675}
676
677static void ne_block_output(struct net_device *dev, int count,
678 const unsigned char *buf, const int start_page)
679{
680 int nic_base = NE_BASE;
681 unsigned long dma_start;
682#ifdef NE_SANITY_CHECK
683 int retries = 0;
684 struct ei_device *ei_local = netdev_priv(dev);
685#endif
686
687 /* Round the count up for word writes. Do we need to do this?
688 What effect will an odd byte count have on the 8390?
689 I should check someday. */
690
691 if (ei_status.word16 && (count & 0x01))
692 count++;
693
694 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
695 if (ei_status.dmaing)
696 {
697 netdev_err(dev, "DMAing conflict in ne_block_output."
698 "[DMAstat:%d][irqlock:%d]\n",
699 ei_status.dmaing, ei_status.irqlock);
700 return;
701 }
702 ei_status.dmaing |= 0x01;
703 /* We should already be in page 0, but to be safe... */
704 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
705
706#ifdef NE_SANITY_CHECK
707retry:
708#endif
709
710#ifdef NE_RW_BUGFIX
711 /* Handle the read-before-write bug the same way as the
712 Crynwr packet driver -- the NatSemi method doesn't work.
713 Actually this doesn't always work either, but if you have
714 problems with your NEx000 this is better than nothing! */
715
716 outb_p(0x42, nic_base + EN0_RCNTLO);
717 outb_p(0x00, nic_base + EN0_RCNTHI);
718 outb_p(0x42, nic_base + EN0_RSARLO);
719 outb_p(0x00, nic_base + EN0_RSARHI);
720 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
721 /* Make certain that the dummy read has occurred. */
722 udelay(6);
723#endif
724
725 outb_p(ENISR_RDC, nic_base + EN0_ISR);
726
727 /* Now the normal output. */
728 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
729 outb_p(count >> 8, nic_base + EN0_RCNTHI);
730 outb_p(0x00, nic_base + EN0_RSARLO);
731 outb_p(start_page, nic_base + EN0_RSARHI);
732
733 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
734 if (ei_status.word16) {
735 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
736 } else {
737 outsb(NE_BASE + NE_DATAPORT, buf, count);
738 }
739
740 dma_start = jiffies;
741
742#ifdef NE_SANITY_CHECK
743 /* This was for the ALPHA version only, but enough people have
744 been encountering problems so it is still here. */
745
746 if (netif_msg_tx_queued(ei_local))
747 {
748 /* DMA termination address check... */
749 int addr, tries = 20;
750 do {
751 int high = inb_p(nic_base + EN0_RSARHI);
752 int low = inb_p(nic_base + EN0_RSARLO);
753 addr = (high << 8) + low;
754 if ((start_page << 8) + count == addr)
755 break;
756 } while (--tries > 0);
757
758 if (tries <= 0)
759 {
760 netdev_warn(dev, "Tx packet transfer address mismatch,"
761 "%#4.4x (expected) vs. %#4.4x (actual).\n",
762 (start_page << 8) + count, addr);
763 if (retries++ == 0)
764 goto retry;
765 }
766 }
767#endif
768
769 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
770 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
771 netdev_warn(dev, "timeout waiting for Tx RDC.\n");
772 ne_reset_8390(dev);
773 NS8390p_init(dev, 1);
774 break;
775 }
776
777 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
778 ei_status.dmaing &= ~0x01;
779}
780
781static int __init ne_drv_probe(struct platform_device *pdev)
782{
783 struct net_device *dev;
784 int err, this_dev = pdev->id;
785 struct resource *res;
786
787 dev = alloc_eip_netdev();
788 if (!dev)
789 return -ENOMEM;
790
791 /* ne.c doesn't populate resources in platform_device, but
792 * rbtx4927_ne_init and rbtx4938_ne_init do register devices
793 * with resources.
794 */
795 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
796 if (res) {
797 dev->base_addr = res->start;
798 dev->irq = platform_get_irq(pdev, 0);
799 } else {
800 if (this_dev < 0 || this_dev >= MAX_NE_CARDS) {
801 free_netdev(dev);
802 return -EINVAL;
803 }
804 dev->base_addr = io[this_dev];
805 dev->irq = irq[this_dev];
806 dev->mem_end = bad[this_dev];
807 }
808 SET_NETDEV_DEV(dev, &pdev->dev);
809 err = do_ne_probe(dev);
810 if (err) {
811 free_netdev(dev);
812 return err;
813 }
814 platform_set_drvdata(pdev, dev);
815
816 /* Update with any values found by probing, don't update if
817 * resources were specified.
818 */
819 if (!res) {
820 io[this_dev] = dev->base_addr;
821 irq[this_dev] = dev->irq;
822 }
823 return 0;
824}
825
826static void ne_drv_remove(struct platform_device *pdev)
827{
828 struct net_device *dev = platform_get_drvdata(pdev);
829
830 if (dev) {
831 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
832 netif_device_detach(dev);
833 unregister_netdev(dev);
834 if (idev)
835 pnp_device_detach(idev);
836 /* Careful ne_drv_remove can be called twice, once from
837 * the platform_driver.remove and again when the
838 * platform_device is being removed.
839 */
840 ei_status.priv = 0;
841 free_irq(dev->irq, dev);
842 release_region(dev->base_addr, NE_IO_EXTENT);
843 free_netdev(dev);
844 }
845}
846
847/* Remove unused devices or all if true. */
848static void ne_loop_rm_unreg(int all)
849{
850 int this_dev;
851 struct platform_device *pdev;
852 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
853 pdev = pdev_ne[this_dev];
854 /* No network device == unused */
855 if (pdev && (!platform_get_drvdata(pdev) || all)) {
856 ne_drv_remove(pdev);
857 platform_device_unregister(pdev);
858 pdev_ne[this_dev] = NULL;
859 }
860 }
861}
862
863#ifdef CONFIG_PM
864static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
865{
866 struct net_device *dev = platform_get_drvdata(pdev);
867
868 if (netif_running(dev)) {
869 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
870 netif_device_detach(dev);
871 if (idev)
872 pnp_stop_dev(idev);
873 }
874 return 0;
875}
876
877static int ne_drv_resume(struct platform_device *pdev)
878{
879 struct net_device *dev = platform_get_drvdata(pdev);
880
881 if (netif_running(dev)) {
882 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
883 if (idev)
884 pnp_start_dev(idev);
885 ne_reset_8390(dev);
886 NS8390p_init(dev, 1);
887 netif_device_attach(dev);
888 }
889 return 0;
890}
891#else
892#define ne_drv_suspend NULL
893#define ne_drv_resume NULL
894#endif
895
896static struct platform_driver ne_driver = {
897 .remove_new = ne_drv_remove,
898 .suspend = ne_drv_suspend,
899 .resume = ne_drv_resume,
900 .driver = {
901 .name = DRV_NAME,
902 },
903};
904
905static void __init ne_add_devices(void)
906{
907 int this_dev;
908 struct platform_device *pdev;
909
910 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
911 if (pdev_ne[this_dev])
912 continue;
913 pdev = platform_device_register_simple(
914 DRV_NAME, this_dev, NULL, 0);
915 if (IS_ERR(pdev))
916 continue;
917 pdev_ne[this_dev] = pdev;
918 }
919}
920
921static int __init ne_init(void)
922{
923 int retval;
924
925 if (IS_MODULE(CONFIG_NE2000))
926 ne_add_devices();
927
928 retval = platform_driver_probe(&ne_driver, ne_drv_probe);
929
930 if (IS_MODULE(CONFIG_NE2000) && retval) {
931 if (io[0] == 0)
932 pr_notice("ne.c: You must supply \"io=0xNNN\""
933 " value(s) for ISA cards.\n");
934 ne_loop_rm_unreg(1);
935 return retval;
936 }
937
938 /* Unregister unused platform_devices. */
939 ne_loop_rm_unreg(0);
940 return retval;
941}
942module_init(ne_init);
943
944#if !defined(MODULE) && defined(CONFIG_NETDEV_LEGACY_INIT)
945struct net_device * __init ne_probe(int unit)
946{
947 int this_dev;
948 struct net_device *dev;
949
950 /* Find an empty slot, that is no net_device and zero io port. */
951 this_dev = 0;
952 while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) ||
953 io[this_dev]) {
954 if (++this_dev == MAX_NE_CARDS)
955 return ERR_PTR(-ENOMEM);
956 }
957
958 /* Get irq, io from kernel command line */
959 dev = alloc_eip_netdev();
960 if (!dev)
961 return ERR_PTR(-ENOMEM);
962
963 sprintf(dev->name, "eth%d", unit);
964 netdev_boot_setup_check(dev);
965
966 io[this_dev] = dev->base_addr;
967 irq[this_dev] = dev->irq;
968 bad[this_dev] = dev->mem_end;
969
970 free_netdev(dev);
971
972 ne_add_devices();
973
974 /* return the first device found */
975 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
976 if (pdev_ne[this_dev]) {
977 dev = platform_get_drvdata(pdev_ne[this_dev]);
978 if (dev)
979 return dev;
980 }
981 }
982
983 return ERR_PTR(-ENODEV);
984}
985#endif
986
987static void __exit ne_exit(void)
988{
989 platform_driver_unregister(&ne_driver);
990 ne_loop_rm_unreg(1);
991}
992module_exit(ne_exit);
1/* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */
2/*
3 Written 1992-94 by Donald Becker.
4
5 Copyright 1993 United States Government as represented by the
6 Director, National Security Agency.
7
8 This software may be used and distributed according to the terms
9 of the GNU General Public License, incorporated herein by reference.
10
11 The author may be reached as becker@scyld.com, or C/O
12 Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
13
14 This driver should work with many programmed-I/O 8390-based ethernet
15 boards. Currently it supports the NE1000, NE2000, many clones,
16 and some Cabletron products.
17
18 Changelog:
19
20 Paul Gortmaker : use ENISR_RDC to monitor Tx PIO uploads, made
21 sanity checks and bad clone support optional.
22 Paul Gortmaker : new reset code, reset card after probe at boot.
23 Paul Gortmaker : multiple card support for module users.
24 Paul Gortmaker : Support for PCI ne2k clones, similar to lance.c
25 Paul Gortmaker : Allow users with bad cards to avoid full probe.
26 Paul Gortmaker : PCI probe changes, more PCI cards supported.
27 rjohnson@analogic.com : Changed init order so an interrupt will only
28 occur after memory is allocated for dev->priv. Deallocated memory
29 last in cleanup_modue()
30 Richard Guenther : Added support for ISAPnP cards
31 Paul Gortmaker : Discontinued PCI support - use ne2k-pci.c instead.
32 Hayato Fujiwara : Add m32r support.
33
34*/
35
36/* Routines for the NatSemi-based designs (NE[12]000). */
37
38static const char version1[] =
39"ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)\n";
40static const char version2[] =
41"Last modified Nov 1, 2000 by Paul Gortmaker\n";
42
43
44#include <linux/module.h>
45#include <linux/kernel.h>
46#include <linux/errno.h>
47#include <linux/isapnp.h>
48#include <linux/init.h>
49#include <linux/interrupt.h>
50#include <linux/delay.h>
51#include <linux/netdevice.h>
52#include <linux/etherdevice.h>
53#include <linux/jiffies.h>
54#include <linux/platform_device.h>
55
56#include <asm/io.h>
57
58#include "8390.h"
59
60#define DRV_NAME "ne"
61
62/* Some defines that people can play with if so inclined. */
63
64/* Do we support clones that don't adhere to 14,15 of the SAprom ? */
65#define SUPPORT_NE_BAD_CLONES
66/* 0xbad = bad sig or no reset ack */
67#define BAD 0xbad
68
69#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
70static struct platform_device *pdev_ne[MAX_NE_CARDS];
71static int io[MAX_NE_CARDS];
72static int irq[MAX_NE_CARDS];
73static int bad[MAX_NE_CARDS];
74static u32 ne_msg_enable;
75
76#ifdef MODULE
77module_param_array(io, int, NULL, 0);
78module_param_array(irq, int, NULL, 0);
79module_param_array(bad, int, NULL, 0);
80module_param_named(msg_enable, ne_msg_enable, uint, (S_IRUSR|S_IRGRP|S_IROTH));
81MODULE_PARM_DESC(io, "I/O base address(es),required");
82MODULE_PARM_DESC(irq, "IRQ number(s)");
83MODULE_PARM_DESC(bad, "Accept card(s) with bad signatures");
84MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
85MODULE_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
86MODULE_LICENSE("GPL");
87#endif /* MODULE */
88
89/* Do we perform extra sanity checks on stuff ? */
90/* #define NE_SANITY_CHECK */
91
92/* Do we implement the read before write bugfix ? */
93/* #define NE_RW_BUGFIX */
94
95/* Do we have a non std. amount of memory? (in units of 256 byte pages) */
96/* #define PACKETBUF_MEMSIZE 0x40 */
97
98/* This is set up so that no ISA autoprobe takes place. We can't guarantee
99that the ne2k probe is the last 8390 based probe to take place (as it
100is at boot) and so the probe will get confused by any other 8390 cards.
101ISA device autoprobes on a running machine are not recommended anyway. */
102#if !defined(MODULE) && (defined(CONFIG_ISA) || defined(CONFIG_M32R))
103/* Do we need a portlist for the ISA auto-probe ? */
104#define NEEDS_PORTLIST
105#endif
106
107/* A zero-terminated list of I/O addresses to be probed at boot. */
108#ifdef NEEDS_PORTLIST
109static unsigned int netcard_portlist[] __initdata = {
110 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
111};
112#endif
113
114static struct isapnp_device_id isapnp_clone_list[] __initdata = {
115 { ISAPNP_CARD_ID('A','X','E',0x2011),
116 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
117 (long) "NetGear EA201" },
118 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
119 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
120 (long) "NN NE2000" },
121 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
122 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
123 (long) "Generic PNP" },
124 { } /* terminate list */
125};
126
127MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
128
129#ifdef SUPPORT_NE_BAD_CLONES
130/* A list of bad clones that we none-the-less recognize. */
131static struct { const char *name8, *name16; unsigned char SAprefix[4];}
132bad_clone_list[] __initdata = {
133 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
134 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
135 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
136 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
137 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
138 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
139 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
140 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
141 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
142 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
143 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
144 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
145 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
146#ifdef CONFIG_MACH_TX49XX
147 {"RBHMA4X00-RTL8019", "RBHMA4X00-RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
148#endif
149 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
150 {NULL,}
151};
152#endif
153
154/* ---- No user-serviceable parts below ---- */
155
156#define NE_BASE (dev->base_addr)
157#define NE_CMD 0x00
158#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
159#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
160#define NE_IO_EXTENT 0x20
161
162#define NE1SM_START_PG 0x20 /* First page of TX buffer */
163#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
164#define NESM_START_PG 0x40 /* First page of TX buffer */
165#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
166
167#if defined(CONFIG_PLAT_MAPPI)
168# define DCR_VAL 0x4b
169#elif defined(CONFIG_PLAT_OAKS32R) || \
170 defined(CONFIG_MACH_TX49XX)
171# define DCR_VAL 0x48 /* 8-bit mode */
172#elif defined(CONFIG_ATARI) /* 8-bit mode on Atari, normal on Q40 */
173# define DCR_VAL (MACH_IS_ATARI ? 0x48 : 0x49)
174#else
175# define DCR_VAL 0x49
176#endif
177
178static int ne_probe1(struct net_device *dev, unsigned long ioaddr);
179static int ne_probe_isapnp(struct net_device *dev);
180
181static void ne_reset_8390(struct net_device *dev);
182static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
183 int ring_page);
184static void ne_block_input(struct net_device *dev, int count,
185 struct sk_buff *skb, int ring_offset);
186static void ne_block_output(struct net_device *dev, const int count,
187 const unsigned char *buf, const int start_page);
188
189
190/* Probe for various non-shared-memory ethercards.
191
192 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
193 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
194 the SAPROM, while other supposed NE2000 clones must be detected by their
195 SA prefix.
196
197 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
198 mode results in doubled values, which can be detected and compensated for.
199
200 The probe is also responsible for initializing the card and filling
201 in the 'dev' and 'ei_status' structures.
202
203 We use the minimum memory size for some ethercard product lines, iff we can't
204 distinguish models. You can increase the packet buffer size by setting
205 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
206 E1010 starts at 0x100 and ends at 0x2000.
207 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
208 E2010 starts at 0x100 and ends at 0x4000.
209 E2010-x starts at 0x100 and ends at 0xffff. */
210
211static int __init do_ne_probe(struct net_device *dev)
212{
213 unsigned long base_addr = dev->base_addr;
214#ifdef NEEDS_PORTLIST
215 int orig_irq = dev->irq;
216#endif
217
218 /* First check any supplied i/o locations. User knows best. <cough> */
219 if (base_addr > 0x1ff) { /* Check a single specified location. */
220 int ret = ne_probe1(dev, base_addr);
221 if (ret)
222 netdev_warn(dev, "ne.c: No NE*000 card found at "
223 "i/o = %#lx\n", base_addr);
224 return ret;
225 }
226 else if (base_addr != 0) /* Don't probe at all. */
227 return -ENXIO;
228
229 /* Then look for any installed ISAPnP clones */
230 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
231 return 0;
232
233#ifdef NEEDS_PORTLIST
234 /* Last resort. The semi-risky ISA auto-probe. */
235 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
236 int ioaddr = netcard_portlist[base_addr];
237 dev->irq = orig_irq;
238 if (ne_probe1(dev, ioaddr) == 0)
239 return 0;
240 }
241#endif
242
243 return -ENODEV;
244}
245
246static int __init ne_probe_isapnp(struct net_device *dev)
247{
248 int i;
249
250 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
251 struct pnp_dev *idev = NULL;
252
253 while ((idev = pnp_find_dev(NULL,
254 isapnp_clone_list[i].vendor,
255 isapnp_clone_list[i].function,
256 idev))) {
257 /* Avoid already found cards from previous calls */
258 if (pnp_device_attach(idev) < 0)
259 continue;
260 if (pnp_activate_dev(idev) < 0) {
261 pnp_device_detach(idev);
262 continue;
263 }
264 /* if no io and irq, search for next */
265 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
266 pnp_device_detach(idev);
267 continue;
268 }
269 /* found it */
270 dev->base_addr = pnp_port_start(idev, 0);
271 dev->irq = pnp_irq(idev, 0);
272 netdev_info(dev,
273 "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
274 (char *) isapnp_clone_list[i].driver_data,
275 dev->base_addr, dev->irq);
276 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
277 netdev_err(dev,
278 "ne.c: Probe of ISAPnP card at %#lx failed.\n",
279 dev->base_addr);
280 pnp_device_detach(idev);
281 return -ENXIO;
282 }
283 ei_status.priv = (unsigned long)idev;
284 break;
285 }
286 if (!idev)
287 continue;
288 return 0;
289 }
290
291 return -ENODEV;
292}
293
294static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
295{
296 int i;
297 unsigned char SA_prom[32];
298 int wordlength = 2;
299 const char *name = NULL;
300 int start_page, stop_page;
301 int neX000, ctron, copam, bad_card;
302 int reg0, ret;
303 static unsigned version_printed;
304 struct ei_device *ei_local = netdev_priv(dev);
305
306 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
307 return -EBUSY;
308
309 reg0 = inb_p(ioaddr);
310 if (reg0 == 0xFF) {
311 ret = -ENODEV;
312 goto err_out;
313 }
314
315 /* Do a preliminary verification that we have a 8390. */
316 {
317 int regd;
318 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
319 regd = inb_p(ioaddr + 0x0d);
320 outb_p(0xff, ioaddr + 0x0d);
321 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
322 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
323 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
324 outb_p(reg0, ioaddr);
325 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
326 ret = -ENODEV;
327 goto err_out;
328 }
329 }
330
331 if ((ne_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0))
332 netdev_info(dev, "%s%s", version1, version2);
333
334 netdev_info(dev, "NE*000 ethercard probe at %#3lx:", ioaddr);
335
336 /* A user with a poor card that fails to ack the reset, or that
337 does not have a valid 0x57,0x57 signature can still use this
338 without having to recompile. Specifying an i/o address along
339 with an otherwise unused dev->mem_end value of "0xBAD" will
340 cause the driver to skip these parts of the probe. */
341
342 bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD));
343
344 /* Reset card. Who knows what dain-bramaged state it was left in. */
345
346 {
347 unsigned long reset_start_time = jiffies;
348
349 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
350 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
351
352 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
353 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
354 if (bad_card) {
355 pr_cont(" (warning: no reset ack)");
356 break;
357 } else {
358 pr_cont(" not found (no reset ack).\n");
359 ret = -ENODEV;
360 goto err_out;
361 }
362 }
363
364 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
365 }
366
367 /* Read the 16 bytes of station address PROM.
368 We must first initialize registers, similar to NS8390p_init(eifdev, 0).
369 We can't reliably read the SAPROM address without this.
370 (I learned the hard way!). */
371 {
372 struct {unsigned char value, offset; } program_seq[] =
373 {
374 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
375 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
376 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
377 {0x00, EN0_RCNTHI},
378 {0x00, EN0_IMR}, /* Mask completion irq. */
379 {0xFF, EN0_ISR},
380 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
381 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
382 {32, EN0_RCNTLO},
383 {0x00, EN0_RCNTHI},
384 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
385 {0x00, EN0_RSARHI},
386 {E8390_RREAD+E8390_START, E8390_CMD},
387 };
388
389 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
390 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
391
392 }
393 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
394 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
395 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
396 if (SA_prom[i] != SA_prom[i+1])
397 wordlength = 1;
398 }
399
400 if (wordlength == 2)
401 {
402 for (i = 0; i < 16; i++)
403 SA_prom[i] = SA_prom[i+i];
404 /* We must set the 8390 for word mode. */
405 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
406 start_page = NESM_START_PG;
407
408 /*
409 * Realtek RTL8019AS datasheet says that the PSTOP register
410 * shouldn't exceed 0x60 in 8-bit mode.
411 * This chip can be identified by reading the signature from
412 * the remote byte count registers (otherwise write-only)...
413 */
414 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
415 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
416 inb(ioaddr + EN0_RCNTHI) == 0x70)
417 stop_page = 0x60;
418 else
419 stop_page = NESM_STOP_PG;
420 } else {
421 start_page = NE1SM_START_PG;
422 stop_page = NE1SM_STOP_PG;
423 }
424
425#if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
426 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
427 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
428#else
429 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
430#endif
431 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
432 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
433
434 /* Set up the rest of the parameters. */
435 if (neX000 || bad_card || copam) {
436 name = (wordlength == 2) ? "NE2000" : "NE1000";
437 }
438 else if (ctron)
439 {
440 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
441 start_page = 0x01;
442 stop_page = (wordlength == 2) ? 0x40 : 0x20;
443 }
444 else
445 {
446#ifdef SUPPORT_NE_BAD_CLONES
447 /* Ack! Well, there might be a *bad* NE*000 clone there.
448 Check for total bogus addresses. */
449 for (i = 0; bad_clone_list[i].name8; i++)
450 {
451 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
452 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
453 SA_prom[2] == bad_clone_list[i].SAprefix[2])
454 {
455 if (wordlength == 2)
456 {
457 name = bad_clone_list[i].name16;
458 } else {
459 name = bad_clone_list[i].name8;
460 }
461 break;
462 }
463 }
464 if (bad_clone_list[i].name8 == NULL)
465 {
466 pr_cont(" not found (invalid signature %2.2x %2.2x).\n",
467 SA_prom[14], SA_prom[15]);
468 ret = -ENXIO;
469 goto err_out;
470 }
471#else
472 pr_cont(" not found.\n");
473 ret = -ENXIO;
474 goto err_out;
475#endif
476 }
477
478 if (dev->irq < 2)
479 {
480 unsigned long cookie = probe_irq_on();
481 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
482 outb_p(0x00, ioaddr + EN0_RCNTLO);
483 outb_p(0x00, ioaddr + EN0_RCNTHI);
484 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
485 mdelay(10); /* wait 10ms for interrupt to propagate */
486 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
487 dev->irq = probe_irq_off(cookie);
488 if (netif_msg_probe(ei_local))
489 pr_cont(" autoirq is %d", dev->irq);
490 } else if (dev->irq == 2)
491 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
492 or don't know which one to set. */
493 dev->irq = 9;
494
495 if (! dev->irq) {
496 pr_cont(" failed to detect IRQ line.\n");
497 ret = -EAGAIN;
498 goto err_out;
499 }
500
501 /* Snarf the interrupt now. There's no point in waiting since we cannot
502 share and the board will usually be enabled. */
503 ret = request_irq(dev->irq, eip_interrupt, 0, name, dev);
504 if (ret) {
505 pr_cont(" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
506 goto err_out;
507 }
508
509 dev->base_addr = ioaddr;
510
511#ifdef CONFIG_PLAT_MAPPI
512 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
513 ioaddr + E8390_CMD); /* 0x61 */
514 for (i = 0; i < ETH_ALEN; i++) {
515 dev->dev_addr[i] = SA_prom[i]
516 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
517 }
518#else
519 for (i = 0; i < ETH_ALEN; i++) {
520 dev->dev_addr[i] = SA_prom[i];
521 }
522#endif
523
524 pr_cont("%pM\n", dev->dev_addr);
525
526 ei_status.name = name;
527 ei_status.tx_start_page = start_page;
528 ei_status.stop_page = stop_page;
529
530 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
531 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
532
533 ei_status.rx_start_page = start_page + TX_PAGES;
534#ifdef PACKETBUF_MEMSIZE
535 /* Allow the packet buffer size to be overridden by know-it-alls. */
536 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
537#endif
538
539 ei_status.reset_8390 = &ne_reset_8390;
540 ei_status.block_input = &ne_block_input;
541 ei_status.block_output = &ne_block_output;
542 ei_status.get_8390_hdr = &ne_get_8390_hdr;
543 ei_status.priv = 0;
544
545 dev->netdev_ops = &eip_netdev_ops;
546 NS8390p_init(dev, 0);
547
548 ei_local->msg_enable = ne_msg_enable;
549 ret = register_netdev(dev);
550 if (ret)
551 goto out_irq;
552 netdev_info(dev, "%s found at %#lx, using IRQ %d.\n",
553 name, ioaddr, dev->irq);
554 return 0;
555
556out_irq:
557 free_irq(dev->irq, dev);
558err_out:
559 release_region(ioaddr, NE_IO_EXTENT);
560 return ret;
561}
562
563/* Hard reset the card. This used to pause for the same period that a
564 8390 reset command required, but that shouldn't be necessary. */
565
566static void ne_reset_8390(struct net_device *dev)
567{
568 unsigned long reset_start_time = jiffies;
569 struct ei_device *ei_local = netdev_priv(dev);
570
571 netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies);
572
573 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
574 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
575
576 ei_status.txing = 0;
577 ei_status.dmaing = 0;
578
579 /* This check _should_not_ be necessary, omit eventually. */
580 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
581 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
582 netdev_err(dev, "ne_reset_8390() did not complete.\n");
583 break;
584 }
585 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
586}
587
588/* Grab the 8390 specific header. Similar to the block_input routine, but
589 we don't need to be concerned with ring wrap as the header will be at
590 the start of a page, so we optimize accordingly. */
591
592static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
593{
594 int nic_base = dev->base_addr;
595
596 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
597
598 if (ei_status.dmaing)
599 {
600 netdev_err(dev, "DMAing conflict in ne_get_8390_hdr "
601 "[DMAstat:%d][irqlock:%d].\n",
602 ei_status.dmaing, ei_status.irqlock);
603 return;
604 }
605
606 ei_status.dmaing |= 0x01;
607 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
608 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
609 outb_p(0, nic_base + EN0_RCNTHI);
610 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
611 outb_p(ring_page, nic_base + EN0_RSARHI);
612 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
613
614 if (ei_status.word16)
615 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
616 else
617 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
618
619 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
620 ei_status.dmaing &= ~0x01;
621
622 le16_to_cpus(&hdr->count);
623}
624
625/* Block input and output, similar to the Crynwr packet driver. If you
626 are porting to a new ethercard, look at the packet driver source for hints.
627 The NEx000 doesn't share the on-board packet memory -- you have to put
628 the packet out through the "remote DMA" dataport using outb. */
629
630static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
631{
632#ifdef NE_SANITY_CHECK
633 int xfer_count = count;
634 struct ei_device *ei_local = netdev_priv(dev);
635#endif
636 int nic_base = dev->base_addr;
637 char *buf = skb->data;
638
639 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
640 if (ei_status.dmaing)
641 {
642 netdev_err(dev, "DMAing conflict in ne_block_input "
643 "[DMAstat:%d][irqlock:%d].\n",
644 ei_status.dmaing, ei_status.irqlock);
645 return;
646 }
647 ei_status.dmaing |= 0x01;
648 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
649 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
650 outb_p(count >> 8, nic_base + EN0_RCNTHI);
651 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
652 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
653 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
654 if (ei_status.word16)
655 {
656 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
657 if (count & 0x01)
658 {
659 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
660#ifdef NE_SANITY_CHECK
661 xfer_count++;
662#endif
663 }
664 } else {
665 insb(NE_BASE + NE_DATAPORT, buf, count);
666 }
667
668#ifdef NE_SANITY_CHECK
669 /* This was for the ALPHA version only, but enough people have
670 been encountering problems so it is still here. If you see
671 this message you either 1) have a slightly incompatible clone
672 or 2) have noise/speed problems with your bus. */
673
674 if (netif_msg_rx_status(ei_local))
675 {
676 /* DMA termination address check... */
677 int addr, tries = 20;
678 do {
679 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
680 -- it's broken for Rx on some cards! */
681 int high = inb_p(nic_base + EN0_RSARHI);
682 int low = inb_p(nic_base + EN0_RSARLO);
683 addr = (high << 8) + low;
684 if (((ring_offset + xfer_count) & 0xff) == low)
685 break;
686 } while (--tries > 0);
687 if (tries <= 0)
688 netdev_warn(dev, "RX transfer address mismatch,"
689 "%#4.4x (expected) vs. %#4.4x (actual).\n",
690 ring_offset + xfer_count, addr);
691 }
692#endif
693 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
694 ei_status.dmaing &= ~0x01;
695}
696
697static void ne_block_output(struct net_device *dev, int count,
698 const unsigned char *buf, const int start_page)
699{
700 int nic_base = NE_BASE;
701 unsigned long dma_start;
702#ifdef NE_SANITY_CHECK
703 int retries = 0;
704 struct ei_device *ei_local = netdev_priv(dev);
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 netdev_err(dev, "DMAing conflict in ne_block_output."
718 "[DMAstat:%d][irqlock:%d]\n",
719 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 (netif_msg_tx_queued(ei_local))
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 netdev_warn(dev, "Tx packet transfer address mismatch,"
781 "%#4.4x (expected) vs. %#4.4x (actual).\n",
782 (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 (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
791 netdev_warn(dev, "timeout waiting for Tx RDC.\n");
792 ne_reset_8390(dev);
793 NS8390p_init(dev, 1);
794 break;
795 }
796
797 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
798 ei_status.dmaing &= ~0x01;
799}
800
801static int __init ne_drv_probe(struct platform_device *pdev)
802{
803 struct net_device *dev;
804 int err, this_dev = pdev->id;
805 struct resource *res;
806
807 dev = alloc_eip_netdev();
808 if (!dev)
809 return -ENOMEM;
810
811 /* ne.c doesn't populate resources in platform_device, but
812 * rbtx4927_ne_init and rbtx4938_ne_init do register devices
813 * with resources.
814 */
815 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
816 if (res) {
817 dev->base_addr = res->start;
818 dev->irq = platform_get_irq(pdev, 0);
819 } else {
820 if (this_dev < 0 || this_dev >= MAX_NE_CARDS) {
821 free_netdev(dev);
822 return -EINVAL;
823 }
824 dev->base_addr = io[this_dev];
825 dev->irq = irq[this_dev];
826 dev->mem_end = bad[this_dev];
827 }
828 SET_NETDEV_DEV(dev, &pdev->dev);
829 err = do_ne_probe(dev);
830 if (err) {
831 free_netdev(dev);
832 return err;
833 }
834 platform_set_drvdata(pdev, dev);
835
836 /* Update with any values found by probing, don't update if
837 * resources were specified.
838 */
839 if (!res) {
840 io[this_dev] = dev->base_addr;
841 irq[this_dev] = dev->irq;
842 }
843 return 0;
844}
845
846static int ne_drv_remove(struct platform_device *pdev)
847{
848 struct net_device *dev = platform_get_drvdata(pdev);
849
850 if (dev) {
851 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
852 netif_device_detach(dev);
853 unregister_netdev(dev);
854 if (idev)
855 pnp_device_detach(idev);
856 /* Careful ne_drv_remove can be called twice, once from
857 * the platform_driver.remove and again when the
858 * platform_device is being removed.
859 */
860 ei_status.priv = 0;
861 free_irq(dev->irq, dev);
862 release_region(dev->base_addr, NE_IO_EXTENT);
863 free_netdev(dev);
864 }
865 return 0;
866}
867
868/* Remove unused devices or all if true. */
869static void ne_loop_rm_unreg(int all)
870{
871 int this_dev;
872 struct platform_device *pdev;
873 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
874 pdev = pdev_ne[this_dev];
875 /* No network device == unused */
876 if (pdev && (!platform_get_drvdata(pdev) || all)) {
877 ne_drv_remove(pdev);
878 platform_device_unregister(pdev);
879 pdev_ne[this_dev] = NULL;
880 }
881 }
882}
883
884#ifdef CONFIG_PM
885static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
886{
887 struct net_device *dev = platform_get_drvdata(pdev);
888
889 if (netif_running(dev)) {
890 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
891 netif_device_detach(dev);
892 if (idev)
893 pnp_stop_dev(idev);
894 }
895 return 0;
896}
897
898static int ne_drv_resume(struct platform_device *pdev)
899{
900 struct net_device *dev = platform_get_drvdata(pdev);
901
902 if (netif_running(dev)) {
903 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
904 if (idev)
905 pnp_start_dev(idev);
906 ne_reset_8390(dev);
907 NS8390p_init(dev, 1);
908 netif_device_attach(dev);
909 }
910 return 0;
911}
912#else
913#define ne_drv_suspend NULL
914#define ne_drv_resume NULL
915#endif
916
917static struct platform_driver ne_driver = {
918 .remove = ne_drv_remove,
919 .suspend = ne_drv_suspend,
920 .resume = ne_drv_resume,
921 .driver = {
922 .name = DRV_NAME,
923 },
924};
925
926static void __init ne_add_devices(void)
927{
928 int this_dev;
929 struct platform_device *pdev;
930
931 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
932 if (pdev_ne[this_dev])
933 continue;
934 pdev = platform_device_register_simple(
935 DRV_NAME, this_dev, NULL, 0);
936 if (IS_ERR(pdev))
937 continue;
938 pdev_ne[this_dev] = pdev;
939 }
940}
941
942#ifdef MODULE
943int __init init_module(void)
944{
945 int retval;
946 ne_add_devices();
947 retval = platform_driver_probe(&ne_driver, ne_drv_probe);
948 if (retval) {
949 if (io[0] == 0)
950 pr_notice("ne.c: You must supply \"io=0xNNN\""
951 " value(s) for ISA cards.\n");
952 ne_loop_rm_unreg(1);
953 return retval;
954 }
955
956 /* Unregister unused platform_devices. */
957 ne_loop_rm_unreg(0);
958 return retval;
959}
960#else /* MODULE */
961static int __init ne_init(void)
962{
963 int retval = platform_driver_probe(&ne_driver, ne_drv_probe);
964
965 /* Unregister unused platform_devices. */
966 ne_loop_rm_unreg(0);
967 return retval;
968}
969module_init(ne_init);
970
971struct net_device * __init ne_probe(int unit)
972{
973 int this_dev;
974 struct net_device *dev;
975
976 /* Find an empty slot, that is no net_device and zero io port. */
977 this_dev = 0;
978 while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) ||
979 io[this_dev]) {
980 if (++this_dev == MAX_NE_CARDS)
981 return ERR_PTR(-ENOMEM);
982 }
983
984 /* Get irq, io from kernel command line */
985 dev = alloc_eip_netdev();
986 if (!dev)
987 return ERR_PTR(-ENOMEM);
988
989 sprintf(dev->name, "eth%d", unit);
990 netdev_boot_setup_check(dev);
991
992 io[this_dev] = dev->base_addr;
993 irq[this_dev] = dev->irq;
994 bad[this_dev] = dev->mem_end;
995
996 free_netdev(dev);
997
998 ne_add_devices();
999
1000 /* return the first device found */
1001 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
1002 if (pdev_ne[this_dev]) {
1003 dev = platform_get_drvdata(pdev_ne[this_dev]);
1004 if (dev)
1005 return dev;
1006 }
1007 }
1008
1009 return ERR_PTR(-ENODEV);
1010}
1011#endif /* MODULE */
1012
1013static void __exit ne_exit(void)
1014{
1015 platform_driver_unregister(&ne_driver);
1016 ne_loop_rm_unreg(1);
1017}
1018module_exit(ne_exit);