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1da177e4
LT		 1/* ne.c: A general non-shared-memory NS8390 ethernet driver for linux. */
2/*
3 Written 1992-94 by Donald Becker.
4
5 Copyright 1993 United States Government as represented by the
6 Director, National Security Agency.
7
8 This software may be used and distributed according to the terms
9 of the GNU General Public License, incorporated herein by reference.
10
11 The author may be reached as becker@scyld.com, or C/O
12 Scyld Computing Corporation, 410 Severn Ave., Suite 210, Annapolis MD 21403
13
14 This driver should work with many programmed-I/O 8390-based ethernet
15 boards. Currently it supports the NE1000, NE2000, many clones,
16 and some Cabletron products.
17
18 Changelog:
19
20 Paul Gortmaker : use ENISR_RDC to monitor Tx PIO uploads, made
21 sanity checks and bad clone support optional.
22 Paul Gortmaker : new reset code, reset card after probe at boot.
23 Paul Gortmaker : multiple card support for module users.
24 Paul Gortmaker : Support for PCI ne2k clones, similar to lance.c
25 Paul Gortmaker : Allow users with bad cards to avoid full probe.
26 Paul Gortmaker : PCI probe changes, more PCI cards supported.
27 rjohnson@analogic.com : Changed init order so an interrupt will only
28 occur after memory is allocated for dev->priv. Deallocated memory
29 last in cleanup_modue()
30 Richard Guenther : Added support for ISAPnP cards
31 Paul Gortmaker : Discontinued PCI support - use ne2k-pci.c instead.
32 Hayato Fujiwara : Add m32r support.
33
34*/
35
36/* Routines for the NatSemi-based designs (NE[12]000). */
37
38static const char version1[] =
39"ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)\n";
40static const char version2[] =
41"Last modified Nov 1, 2000 by Paul Gortmaker\n";
42
43
44#include <linux/module.h>
45#include <linux/kernel.h>
46#include <linux/errno.h>
47#include <linux/isapnp.h>
48#include <linux/init.h>
49#include <linux/interrupt.h>
50#include <linux/delay.h>
51#include <linux/netdevice.h>
52#include <linux/etherdevice.h>
ff5688ae 53#include <linux/jiffies.h>
a4d542b9 54#include <linux/platform_device.h>
1da177e4
LT		 55
56#include <asm/system.h>
57#include <asm/io.h>
58
59#include "8390.h"
60
61#define DRV_NAME "ne"
62
63/* Some defines that people can play with if so inclined. */
64
65/* Do we support clones that don't adhere to 14,15 of the SAprom ? */
66#define SUPPORT_NE_BAD_CLONES
fbb80230
DF		 67/* 0xbad = bad sig or no reset ack */
68#define BAD 0xbad
69
70#define MAX_NE_CARDS 4 /* Max number of NE cards per module */
71static struct platform_device *pdev_ne[MAX_NE_CARDS];
72static int io[MAX_NE_CARDS];
73static int irq[MAX_NE_CARDS];
74static int bad[MAX_NE_CARDS];
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_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_DESCRIPTION("NE1000/NE2000 ISA/PnP Ethernet driver");
84MODULE_LICENSE("GPL");
85#endif /* MODULE */
1da177e4
LT		 86
87/* Do we perform extra sanity checks on stuff ? */
88/* #define NE_SANITY_CHECK */
89
90/* Do we implement the read before write bugfix ? */
91/* #define NE_RW_BUGFIX */
92
93/* Do we have a non std. amount of memory? (in units of 256 byte pages) */
94/* #define PACKETBUF_MEMSIZE 0x40 */
95
fbb80230
DF		 96/* This is set up so that no ISA autoprobe takes place. We can't guarantee
97that the ne2k probe is the last 8390 based probe to take place (as it
98is at boot) and so the probe will get confused by any other 8390 cards.
99ISA device autoprobes on a running machine are not recommended anyway. */
1c08bf10
AN		 100#if !defined(MODULE) && (defined(CONFIG_ISA) || defined(CONFIG_M32R))
101/* Do we need a portlist for the ISA auto-probe ? */
102#define NEEDS_PORTLIST
103#endif
104
1da177e4 105/* A zero-terminated list of I/O addresses to be probed at boot. */
1c08bf10 106#ifdef NEEDS_PORTLIST
1da177e4
LT		 107static unsigned int netcard_portlist[] __initdata = {
108 0x300, 0x280, 0x320, 0x340, 0x360, 0x380, 0
109};
110#endif
111
112static struct isapnp_device_id isapnp_clone_list[] __initdata = {
113 { ISAPNP_CARD_ID('A','X','E',0x2011),
114 ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
115 (long) "NetGear EA201" },
116 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
117 ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
118 (long) "NN NE2000" },
119 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
120 ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
121 (long) "Generic PNP" },
122 { } /* terminate list */
123};
124
125MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
126
127#ifdef SUPPORT_NE_BAD_CLONES
128/* A list of bad clones that we none-the-less recognize. */
129static struct { const char *name8, *name16; unsigned char SAprefix[4];}
130bad_clone_list[] __initdata = {
131 {"DE100", "DE200", {0x00, 0xDE, 0x01,}},
132 {"DE120", "DE220", {0x00, 0x80, 0xc8,}},
133 {"DFI1000", "DFI2000", {'D', 'F', 'I',}}, /* Original, eh? */
134 {"EtherNext UTP8", "EtherNext UTP16", {0x00, 0x00, 0x79}},
135 {"NE1000","NE2000-invalid", {0x00, 0x00, 0xd8}}, /* Ancient real NE1000. */
136 {"NN1000", "NN2000", {0x08, 0x03, 0x08}}, /* Outlaw no-name clone. */
137 {"4-DIM8","4-DIM16", {0x00,0x00,0x4d,}}, /* Outlaw 4-Dimension cards. */
138 {"Con-Intl_8", "Con-Intl_16", {0x00, 0x00, 0x24}}, /* Connect Int'nl */
139 {"ET-100","ET-200", {0x00, 0x45, 0x54}}, /* YANG and YA clone */
140 {"COMPEX","COMPEX16",{0x00,0x80,0x48}}, /* Broken ISA Compex cards */
141 {"E-LAN100", "E-LAN200", {0x00, 0x00, 0x5d}}, /* Broken ne1000 clones */
142 {"PCM-4823", "PCM-4823", {0x00, 0xc0, 0x6c}}, /* Broken Advantech MoBo */
143 {"REALTEK", "RTL8019", {0x00, 0x00, 0xe8}}, /* no-name with Realtek chip */
c7e65c17 144#ifdef CONFIG_MACH_TX49XX
9cc975e0
RB		 145 {"RBHMA4X00-RTL8019", "RBHMA4X00/RTL8019", {0x00, 0x60, 0x0a}}, /* Toshiba built-in */
146#endif
1da177e4
LT		 147 {"LCS-8834", "LCS-8836", {0x04, 0x04, 0x37}}, /* ShinyNet (SET) */
148 {NULL,}
149};
150#endif
151
152/* ---- No user-serviceable parts below ---- */
153
154#define NE_BASE (dev->base_addr)
155#define NE_CMD 0x00
156#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
157#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
158#define NE_IO_EXTENT 0x20
159
160#define NE1SM_START_PG 0x20 /* First page of TX buffer */
161#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
162#define NESM_START_PG 0x40 /* First page of TX buffer */
163#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
164
44456d37 165#if defined(CONFIG_PLAT_MAPPI)
1da177e4 166# define DCR_VAL 0x4b
aedc0e52 167#elif defined(CONFIG_PLAT_OAKS32R) || \
c7e65c17 168 defined(CONFIG_MACH_TX49XX)
aedc0e52 169# define DCR_VAL 0x48 /* 8-bit mode */
1da177e4
LT		 170#else
171# define DCR_VAL 0x49
172#endif
173
f0e93c10 174static int ne_probe1(struct net_device *dev, unsigned long ioaddr);
1da177e4
LT		 175static int ne_probe_isapnp(struct net_device *dev);
176
177static int ne_open(struct net_device *dev);
178static int ne_close(struct net_device *dev);
179
180static void ne_reset_8390(struct net_device *dev);
181static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
182 int ring_page);
183static void ne_block_input(struct net_device *dev, int count,
184 struct sk_buff *skb, int ring_offset);
185static void ne_block_output(struct net_device *dev, const int count,
186 const unsigned char *buf, const int start_page);
187
6aa20a22 188
1da177e4
LT		 189/* Probe for various non-shared-memory ethercards.
190
191 NEx000-clone boards have a Station Address PROM (SAPROM) in the packet
192 buffer memory space. NE2000 clones have 0x57,0x57 in bytes 0x0e,0x0f of
193 the SAPROM, while other supposed NE2000 clones must be detected by their
194 SA prefix.
195
196 Reading the SAPROM from a word-wide card with the 8390 set in byte-wide
197 mode results in doubled values, which can be detected and compensated for.
198
199 The probe is also responsible for initializing the card and filling
200 in the 'dev' and 'ei_status' structures.
201
202 We use the minimum memory size for some ethercard product lines, iff we can't
203 distinguish models. You can increase the packet buffer size by setting
204 PACKETBUF_MEMSIZE. Reported Cabletron packet buffer locations are:
205 E1010 starts at 0x100 and ends at 0x2000.
206 E1010-x starts at 0x100 and ends at 0x8000. ("-x" means "more memory")
207 E2010 starts at 0x100 and ends at 0x4000.
208 E2010-x starts at 0x100 and ends at 0xffff. */
209
210static int __init do_ne_probe(struct net_device *dev)
211{
f0e93c10 212 unsigned long base_addr = dev->base_addr;
1c08bf10 213#ifdef NEEDS_PORTLIST
1da177e4
LT		 214 int orig_irq = dev->irq;
215#endif
216
1da177e4 217 /* First check any supplied i/o locations. User knows best. <cough> */
fbb80230
DF		 218 if (base_addr > 0x1ff) { /* Check a single specified location. */
219 int ret = ne_probe1(dev, base_addr);
220 if (ret)
221 printk(KERN_WARNING "ne.c: No NE*000 card found at "
222 "i/o = %#lx\n", base_addr);
223 return ret;
224 }
1da177e4
LT		 225 else if (base_addr != 0) /* Don't probe at all. */
226 return -ENXIO;
227
228 /* Then look for any installed ISAPnP clones */
229 if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
230 return 0;
231
1c08bf10 232#ifdef NEEDS_PORTLIST
1da177e4
LT		 233 /* Last resort. The semi-risky ISA auto-probe. */
234 for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
235 int ioaddr = netcard_portlist[base_addr];
236 dev->irq = orig_irq;
237 if (ne_probe1(dev, ioaddr) == 0)
238 return 0;
239 }
240#endif
241
242 return -ENODEV;
243}
244
1da177e4
LT		 245static int __init ne_probe_isapnp(struct net_device *dev)
246{
247 int i;
248
249 for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
250 struct pnp_dev *idev = NULL;
251
252 while ((idev = pnp_find_dev(NULL,
253 isapnp_clone_list[i].vendor,
254 isapnp_clone_list[i].function,
255 idev))) {
256 /* Avoid already found cards from previous calls */
257 if (pnp_device_attach(idev) < 0)
258 continue;
259 if (pnp_activate_dev(idev) < 0) {
260 pnp_device_detach(idev);
261 continue;
262 }
263 /* if no io and irq, search for next */
264 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
265 pnp_device_detach(idev);
266 continue;
267 }
268 /* found it */
269 dev->base_addr = pnp_port_start(idev, 0);
270 dev->irq = pnp_irq(idev, 0);
271 printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
272 (char *) isapnp_clone_list[i].driver_data,
273 dev->base_addr, dev->irq);
274 if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
275 printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", 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
f0e93c10 290static int __init ne_probe1(struct net_device *dev, unsigned long ioaddr)
1da177e4
LT		 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
301 if (!request_region(ioaddr, NE_IO_EXTENT, DRV_NAME))
302 return -EBUSY;
303
304 reg0 = inb_p(ioaddr);
305 if (reg0 == 0xFF) {
306 ret = -ENODEV;
307 goto err_out;
308 }
309
310 /* Do a preliminary verification that we have a 8390. */
311 {
312 int regd;
313 outb_p(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
314 regd = inb_p(ioaddr + 0x0d);
315 outb_p(0xff, ioaddr + 0x0d);
316 outb_p(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
317 inb_p(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
318 if (inb_p(ioaddr + EN0_COUNTER0) != 0) {
319 outb_p(reg0, ioaddr);
320 outb_p(regd, ioaddr + 0x0d); /* Restore the old values. */
321 ret = -ENODEV;
322 goto err_out;
323 }
324 }
325
326 if (ei_debug && version_printed++ == 0)
327 printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
328
f0e93c10 329 printk(KERN_INFO "NE*000 ethercard probe at %#3lx:", ioaddr);
1da177e4
LT		 330
331 /* A user with a poor card that fails to ack the reset, or that
332 does not have a valid 0x57,0x57 signature can still use this
333 without having to recompile. Specifying an i/o address along
334 with an otherwise unused dev->mem_end value of "0xBAD" will
335 cause the driver to skip these parts of the probe. */
336
fbb80230 337 bad_card = ((dev->base_addr != 0) && (dev->mem_end == BAD));
1da177e4
LT		 338
339 /* Reset card. Who knows what dain-bramaged state it was left in. */
340
341 {
342 unsigned long reset_start_time = jiffies;
343
344 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
345 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
346
347 while ((inb_p(ioaddr + EN0_ISR) & ENISR_RESET) == 0)
ff5688ae 348 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
1da177e4
LT		 349 if (bad_card) {
350 printk(" (warning: no reset ack)");
351 break;
352 } else {
353 printk(" not found (no reset ack).\n");
354 ret = -ENODEV;
355 goto err_out;
356 }
357 }
358
359 outb_p(0xff, ioaddr + EN0_ISR); /* Ack all intr. */
360 }
361
362 /* Read the 16 bytes of station address PROM.
f0084a36 363 We must first initialize registers, similar to NS8390p_init(eifdev, 0).
1da177e4
LT		 364 We can't reliably read the SAPROM address without this.
365 (I learned the hard way!). */
366 {
367 struct {unsigned char value, offset; } program_seq[] =
368 {
369 {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/
370 {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */
371 {0x00, EN0_RCNTLO}, /* Clear the count regs. */
372 {0x00, EN0_RCNTHI},
373 {0x00, EN0_IMR}, /* Mask completion irq. */
374 {0xFF, EN0_ISR},
375 {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */
376 {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */
377 {32, EN0_RCNTLO},
378 {0x00, EN0_RCNTHI},
379 {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */
380 {0x00, EN0_RSARHI},
381 {E8390_RREAD+E8390_START, E8390_CMD},
382 };
383
ff8ac609 384 for (i = 0; i < ARRAY_SIZE(program_seq); i++)
1da177e4
LT		 385 outb_p(program_seq[i].value, ioaddr + program_seq[i].offset);
386
387 }
388 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
389 SA_prom[i] = inb(ioaddr + NE_DATAPORT);
390 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
391 if (SA_prom[i] != SA_prom[i+1])
392 wordlength = 1;
393 }
394
395 if (wordlength == 2)
396 {
397 for (i = 0; i < 16; i++)
398 SA_prom[i] = SA_prom[i+i];
399 /* We must set the 8390 for word mode. */
400 outb_p(DCR_VAL, ioaddr + EN0_DCFG);
401 start_page = NESM_START_PG;
aedc0e52
SS		 402
403 /*
404 * Realtek RTL8019AS datasheet says that the PSTOP register
405 * shouldn't exceed 0x60 in 8-bit mode.
406 * This chip can be identified by reading the signature from
407 * the remote byte count registers (otherwise write-only)...
408 */
409 if ((DCR_VAL & 0x01) == 0 && /* 8-bit mode */
410 inb(ioaddr + EN0_RCNTLO) == 0x50 &&
411 inb(ioaddr + EN0_RCNTHI) == 0x70)
412 stop_page = 0x60;
413 else
414 stop_page = NESM_STOP_PG;
1da177e4
LT		 415 } else {
416 start_page = NE1SM_START_PG;
aedc0e52 417 stop_page = NE1SM_STOP_PG;
1da177e4
LT		 418 }
419
420#if defined(CONFIG_PLAT_MAPPI) || defined(CONFIG_PLAT_OAKS32R)
421 neX000 = ((SA_prom[14] == 0x57 && SA_prom[15] == 0x57)
422 || (SA_prom[14] == 0x42 && SA_prom[15] == 0x42));
423#else
424 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
425#endif
426 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
427 copam = (SA_prom[14] == 0x49 && SA_prom[15] == 0x00);
428
429 /* Set up the rest of the parameters. */
430 if (neX000 || bad_card || copam) {
431 name = (wordlength == 2) ? "NE2000" : "NE1000";
432 }
433 else if (ctron)
434 {
435 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
436 start_page = 0x01;
437 stop_page = (wordlength == 2) ? 0x40 : 0x20;
438 }
439 else
440 {
441#ifdef SUPPORT_NE_BAD_CLONES
442 /* Ack! Well, there might be a *bad* NE*000 clone there.
443 Check for total bogus addresses. */
444 for (i = 0; bad_clone_list[i].name8; i++)
445 {
446 if (SA_prom[0] == bad_clone_list[i].SAprefix[0] &&
447 SA_prom[1] == bad_clone_list[i].SAprefix[1] &&
448 SA_prom[2] == bad_clone_list[i].SAprefix[2])
449 {
450 if (wordlength == 2)
451 {
452 name = bad_clone_list[i].name16;
453 } else {
454 name = bad_clone_list[i].name8;
455 }
456 break;
457 }
458 }
459 if (bad_clone_list[i].name8 == NULL)
460 {
461 printk(" not found (invalid signature %2.2x %2.2x).\n",
462 SA_prom[14], SA_prom[15]);
463 ret = -ENXIO;
464 goto err_out;
465 }
466#else
467 printk(" not found.\n");
468 ret = -ENXIO;
469 goto err_out;
470#endif
471 }
472
473 if (dev->irq < 2)
474 {
475 unsigned long cookie = probe_irq_on();
476 outb_p(0x50, ioaddr + EN0_IMR); /* Enable one interrupt. */
477 outb_p(0x00, ioaddr + EN0_RCNTLO);
478 outb_p(0x00, ioaddr + EN0_RCNTHI);
479 outb_p(E8390_RREAD+E8390_START, ioaddr); /* Trigger it... */
480 mdelay(10); /* wait 10ms for interrupt to propagate */
481 outb_p(0x00, ioaddr + EN0_IMR); /* Mask it again. */
482 dev->irq = probe_irq_off(cookie);
483 if (ei_debug > 2)
484 printk(" autoirq is %d\n", dev->irq);
485 } else if (dev->irq == 2)
486 /* Fixup for users that don't know that IRQ 2 is really IRQ 9,
487 or don't know which one to set. */
488 dev->irq = 9;
489
490 if (! dev->irq) {
491 printk(" failed to detect IRQ line.\n");
492 ret = -EAGAIN;
493 goto err_out;
494 }
495
496 /* Snarf the interrupt now. There's no point in waiting since we cannot
497 share and the board will usually be enabled. */
055e5110 498 ret = request_irq(dev->irq, eip_interrupt, 0, name, dev);
1da177e4
LT		 499 if (ret) {
500 printk (" unable to get IRQ %d (errno=%d).\n", dev->irq, ret);
501 goto err_out;
502 }
503
504 dev->base_addr = ioaddr;
505
506#ifdef CONFIG_PLAT_MAPPI
507 outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
508 ioaddr + E8390_CMD); /* 0x61 */
509 for (i = 0 ; i < ETHER_ADDR_LEN ; i++) {
510 dev->dev_addr[i] = SA_prom[i]
511 = inb_p(ioaddr + EN1_PHYS_SHIFT(i));
1da177e4
LT		 512 }
513#else
514 for(i = 0; i < ETHER_ADDR_LEN; i++) {
1da177e4
LT		 515 dev->dev_addr[i] = SA_prom[i];
516 }
517#endif
518
e174961c 519 printk("%pM\n", dev->dev_addr);
1da177e4
LT		 520
521 ei_status.name = name;
522 ei_status.tx_start_page = start_page;
523 ei_status.stop_page = stop_page;
9cc975e0 524
aedc0e52
SS		 525 /* Use 16-bit mode only if this wasn't overridden by DCR_VAL */
526 ei_status.word16 = (wordlength == 2 && (DCR_VAL & 0x01));
1da177e4
LT		 527
528 ei_status.rx_start_page = start_page + TX_PAGES;
529#ifdef PACKETBUF_MEMSIZE
530 /* Allow the packet buffer size to be overridden by know-it-alls. */
531 ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
532#endif
533
534 ei_status.reset_8390 = &ne_reset_8390;
535 ei_status.block_input = &ne_block_input;
536 ei_status.block_output = &ne_block_output;
537 ei_status.get_8390_hdr = &ne_get_8390_hdr;
538 ei_status.priv = 0;
539 dev->open = &ne_open;
540 dev->stop = &ne_close;
541#ifdef CONFIG_NET_POLL_CONTROLLER
055e5110 542 dev->poll_controller = eip_poll;
1da177e4 543#endif
d02a4e31 544 NS8390p_init(dev, 0);
b1fc5505
HX		 545
546 ret = register_netdev(dev);
547 if (ret)
548 goto out_irq;
f0e93c10
AN		 549 printk(KERN_INFO "%s: %s found at %#lx, using IRQ %d.\n",
550 dev->name, name, ioaddr, dev->irq);
1da177e4
LT		 551 return 0;
552
b1fc5505
HX		 553out_irq:
554 free_irq(dev->irq, dev);
1da177e4
LT		 555err_out:
556 release_region(ioaddr, NE_IO_EXTENT);
557 return ret;
558}
559
560static int ne_open(struct net_device *dev)
561{
055e5110 562 eip_open(dev);
1da177e4
LT		 563 return 0;
564}
565
566static int ne_close(struct net_device *dev)
567{
568 if (ei_debug > 1)
569 printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
055e5110 570 eip_close(dev);
1da177e4
LT		 571 return 0;
572}
573
574/* Hard reset the card. This used to pause for the same period that a
575 8390 reset command required, but that shouldn't be necessary. */
576
577static void ne_reset_8390(struct net_device *dev)
578{
579 unsigned long reset_start_time = jiffies;
580
581 if (ei_debug > 1)
582 printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
583
584 /* DON'T change these to inb_p/outb_p or reset will fail on clones. */
585 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
586
587 ei_status.txing = 0;
588 ei_status.dmaing = 0;
589
590 /* This check _should_not_ be necessary, omit eventually. */
591 while ((inb_p(NE_BASE+EN0_ISR) & ENISR_RESET) == 0)
ff5688ae 592 if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
1da177e4
LT		 593 printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", dev->name);
594 break;
595 }
596 outb_p(ENISR_RESET, NE_BASE + EN0_ISR); /* Ack intr. */
597}
598
599/* Grab the 8390 specific header. Similar to the block_input routine, but
600 we don't need to be concerned with ring wrap as the header will be at
601 the start of a page, so we optimize accordingly. */
602
603static void ne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
604{
605 int nic_base = dev->base_addr;
606
607 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
608
609 if (ei_status.dmaing)
610 {
611 printk(KERN_EMERG "%s: DMAing conflict in ne_get_8390_hdr "
612 "[DMAstat:%d][irqlock:%d].\n",
613 dev->name, ei_status.dmaing, ei_status.irqlock);
614 return;
615 }
616
617 ei_status.dmaing |= 0x01;
618 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
619 outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
620 outb_p(0, nic_base + EN0_RCNTHI);
621 outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
622 outb_p(ring_page, nic_base + EN0_RSARHI);
623 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
624
625 if (ei_status.word16)
626 insw(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
627 else
628 insb(NE_BASE + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
629
630 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
631 ei_status.dmaing &= ~0x01;
632
633 le16_to_cpus(&hdr->count);
634}
635
636/* Block input and output, similar to the Crynwr packet driver. If you
637 are porting to a new ethercard, look at the packet driver source for hints.
638 The NEx000 doesn't share the on-board packet memory -- you have to put
639 the packet out through the "remote DMA" dataport using outb. */
640
641static void ne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
642{
643#ifdef NE_SANITY_CHECK
644 int xfer_count = count;
645#endif
646 int nic_base = dev->base_addr;
647 char *buf = skb->data;
648
649 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
650 if (ei_status.dmaing)
651 {
652 printk(KERN_EMERG "%s: DMAing conflict in ne_block_input "
653 "[DMAstat:%d][irqlock:%d].\n",
654 dev->name, ei_status.dmaing, ei_status.irqlock);
655 return;
656 }
657 ei_status.dmaing |= 0x01;
658 outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
659 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
660 outb_p(count >> 8, nic_base + EN0_RCNTHI);
661 outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
662 outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
663 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
664 if (ei_status.word16)
665 {
666 insw(NE_BASE + NE_DATAPORT,buf,count>>1);
667 if (count & 0x01)
668 {
669 buf[count-1] = inb(NE_BASE + NE_DATAPORT);
670#ifdef NE_SANITY_CHECK
671 xfer_count++;
672#endif
673 }
674 } else {
675 insb(NE_BASE + NE_DATAPORT, buf, count);
676 }
677
678#ifdef NE_SANITY_CHECK
679 /* This was for the ALPHA version only, but enough people have
680 been encountering problems so it is still here. If you see
681 this message you either 1) have a slightly incompatible clone
682 or 2) have noise/speed problems with your bus. */
683
684 if (ei_debug > 1)
685 {
686 /* DMA termination address check... */
687 int addr, tries = 20;
688 do {
689 /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here
690 -- it's broken for Rx on some cards! */
691 int high = inb_p(nic_base + EN0_RSARHI);
692 int low = inb_p(nic_base + EN0_RSARLO);
693 addr = (high << 8) + low;
694 if (((ring_offset + xfer_count) & 0xff) == low)
695 break;
696 } while (--tries > 0);
697 if (tries <= 0)
698 printk(KERN_WARNING "%s: RX transfer address mismatch,"
699 "%#4.4x (expected) vs. %#4.4x (actual).\n",
700 dev->name, ring_offset + xfer_count, addr);
701 }
702#endif
703 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
704 ei_status.dmaing &= ~0x01;
705}
706
707static void ne_block_output(struct net_device *dev, int count,
708 const unsigned char *buf, const int start_page)
709{
710 int nic_base = NE_BASE;
711 unsigned long dma_start;
712#ifdef NE_SANITY_CHECK
713 int retries = 0;
714#endif
715
716 /* Round the count up for word writes. Do we need to do this?
717 What effect will an odd byte count have on the 8390?
718 I should check someday. */
719
720 if (ei_status.word16 && (count & 0x01))
721 count++;
722
723 /* This *shouldn't* happen. If it does, it's the last thing you'll see */
724 if (ei_status.dmaing)
725 {
726 printk(KERN_EMERG "%s: DMAing conflict in ne_block_output."
727 "[DMAstat:%d][irqlock:%d]\n",
728 dev->name, ei_status.dmaing, ei_status.irqlock);
729 return;
730 }
731 ei_status.dmaing |= 0x01;
732 /* We should already be in page 0, but to be safe... */
733 outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
734
735#ifdef NE_SANITY_CHECK
736retry:
737#endif
738
739#ifdef NE8390_RW_BUGFIX
740 /* Handle the read-before-write bug the same way as the
741 Crynwr packet driver -- the NatSemi method doesn't work.
742 Actually this doesn't always work either, but if you have
743 problems with your NEx000 this is better than nothing! */
744
745 outb_p(0x42, nic_base + EN0_RCNTLO);
746 outb_p(0x00, nic_base + EN0_RCNTHI);
747 outb_p(0x42, nic_base + EN0_RSARLO);
748 outb_p(0x00, nic_base + EN0_RSARHI);
749 outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
750 /* Make certain that the dummy read has occurred. */
751 udelay(6);
752#endif
753
754 outb_p(ENISR_RDC, nic_base + EN0_ISR);
755
756 /* Now the normal output. */
757 outb_p(count & 0xff, nic_base + EN0_RCNTLO);
758 outb_p(count >> 8, nic_base + EN0_RCNTHI);
759 outb_p(0x00, nic_base + EN0_RSARLO);
760 outb_p(start_page, nic_base + EN0_RSARHI);
761
762 outb_p(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
763 if (ei_status.word16) {
764 outsw(NE_BASE + NE_DATAPORT, buf, count>>1);
765 } else {
766 outsb(NE_BASE + NE_DATAPORT, buf, count);
767 }
768
769 dma_start = jiffies;
770
771#ifdef NE_SANITY_CHECK
772 /* This was for the ALPHA version only, but enough people have
773 been encountering problems so it is still here. */
774
775 if (ei_debug > 1)
776 {
777 /* DMA termination address check... */
778 int addr, tries = 20;
779 do {
780 int high = inb_p(nic_base + EN0_RSARHI);
781 int low = inb_p(nic_base + EN0_RSARLO);
782 addr = (high << 8) + low;
783 if ((start_page << 8) + count == addr)
784 break;
785 } while (--tries > 0);
786
787 if (tries <= 0)
788 {
789 printk(KERN_WARNING "%s: Tx packet transfer address mismatch,"
790 "%#4.4x (expected) vs. %#4.4x (actual).\n",
791 dev->name, (start_page << 8) + count, addr);
792 if (retries++ == 0)
793 goto retry;
794 }
795 }
796#endif
797
798 while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0)
ff5688ae 799 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
1da177e4
LT		 800 printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
801 ne_reset_8390(dev);
d02a4e31 802 NS8390p_init(dev, 1);
1da177e4
LT		 803 break;
804 }
805
806 outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
807 ei_status.dmaing &= ~0x01;
808 return;
809}
810
a4d542b9
AN		 811static int __init ne_drv_probe(struct platform_device *pdev)
812{
813 struct net_device *dev;
fbb80230 814 int err, this_dev = pdev->id;
a4d542b9 815 struct resource *res;
a4d542b9 816
055e5110 817 dev = alloc_eip_netdev();
a4d542b9
AN		 818 if (!dev)
819 return -ENOMEM;
fbb80230
DF		 820
821 /* ne.c doesn't populate resources in platform_device, but
822 * rbtx4927_ne_init and rbtx4938_ne_init do register devices
823 * with resources.
824 */
825 res = platform_get_resource(pdev, IORESOURCE_IO, 0);
826 if (res) {
827 dev->base_addr = res->start;
828 dev->irq = platform_get_irq(pdev, 0);
829 } else {
830 if (this_dev < 0 || this_dev >= MAX_NE_CARDS)
831 return -EINVAL;
832 dev->base_addr = io[this_dev];
833 dev->irq = irq[this_dev];
834 dev->mem_end = bad[this_dev];
835 }
a4d542b9
AN		 836 err = do_ne_probe(dev);
837 if (err) {
838 free_netdev(dev);
839 return err;
840 }
841 platform_set_drvdata(pdev, dev);
fbb80230
DF		 842
843 /* Update with any values found by probing, don't update if
844 * resources were specified.
845 */
846 if (!res) {
847 io[this_dev] = dev->base_addr;
848 irq[this_dev] = dev->irq;
849 }
a4d542b9
AN		 850 return 0;
851}
852
fbb80230 853static int ne_drv_remove(struct platform_device *pdev)
a4d542b9
AN		 854{
855 struct net_device *dev = platform_get_drvdata(pdev);
856
fbb80230
DF		 857 if (dev) {
858 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
859 netif_device_detach(dev);
860 unregister_netdev(dev);
861 if (idev)
862 pnp_device_detach(idev);
863 /* Careful ne_drv_remove can be called twice, once from
864 * the platform_driver.remove and again when the
865 * platform_device is being removed.
866 */
867 ei_status.priv = 0;
868 free_irq(dev->irq, dev);
869 release_region(dev->base_addr, NE_IO_EXTENT);
870 free_netdev(dev);
871 platform_set_drvdata(pdev, NULL);
872 }
a4d542b9
AN		 873 return 0;
874}
875
fbb80230
DF		 876/* Remove unused devices or all if true. */
877static void ne_loop_rm_unreg(int all)
878{
879 int this_dev;
880 struct platform_device *pdev;
881 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
882 pdev = pdev_ne[this_dev];
883 /* No network device == unused */
884 if (pdev && (!platform_get_drvdata(pdev) || all)) {
885 ne_drv_remove(pdev);
886 platform_device_unregister(pdev);
887 pdev_ne[this_dev] = NULL;
888 }
889 }
890}
891
a4d542b9
AN		 892#ifdef CONFIG_PM
893static int ne_drv_suspend(struct platform_device *pdev, pm_message_t state)
894{
895 struct net_device *dev = platform_get_drvdata(pdev);
896
539b06fc
DF		 897 if (netif_running(dev)) {
898 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
a4d542b9 899 netif_device_detach(dev);
539b06fc
DF		 900 if (idev)
901 pnp_stop_dev(idev);
902 }
a4d542b9
AN		 903 return 0;
904}
905
906static int ne_drv_resume(struct platform_device *pdev)
907{
908 struct net_device *dev = platform_get_drvdata(pdev);
909
910 if (netif_running(dev)) {
539b06fc
DF		 911 struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
912 if (idev)
913 pnp_start_dev(idev);
a4d542b9 914 ne_reset_8390(dev);
d02a4e31 915 NS8390p_init(dev, 1);
a4d542b9
AN		 916 netif_device_attach(dev);
917 }
918 return 0;
919}
920#else
921#define ne_drv_suspend NULL
922#define ne_drv_resume NULL
923#endif
924
925static struct platform_driver ne_driver = {
fbb80230 926 .remove = ne_drv_remove,
a4d542b9
AN		 927 .suspend = ne_drv_suspend,
928 .resume = ne_drv_resume,
929 .driver = {
930 .name = DRV_NAME,
931 .owner = THIS_MODULE,
932 },
933};
934
fbb80230 935static void __init ne_add_devices(void)
a4d542b9 936{
fbb80230
DF		 937 int this_dev;
938 struct platform_device *pdev;
a4d542b9 939
fbb80230
DF		 940 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
941 if (pdev_ne[this_dev])
942 continue;
943 pdev = platform_device_register_simple(
944 DRV_NAME, this_dev, NULL, 0);
945 if (IS_ERR(pdev))
946 continue;
947 pdev_ne[this_dev] = pdev;
948 }
a4d542b9 949}
6aa20a22 950
1da177e4 951#ifdef MODULE
fbb80230 952int __init init_module()
1da177e4 953{
fbb80230
DF		 954 int retval;
955 ne_add_devices();
956 retval = platform_driver_probe(&ne_driver, ne_drv_probe);
957 if (retval) {
958 if (io[0] == 0)
959 printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\""
960 " value(s) for ISA cards.\n");
961 ne_loop_rm_unreg(1);
962 return retval;
1da177e4 963 }
1da177e4 964
fbb80230
DF		 965 /* Unregister unused platform_devices. */
966 ne_loop_rm_unreg(0);
967 return retval;
968}
969#else /* MODULE */
970static int __init ne_init(void)
64916f1e 971{
fbb80230
DF		 972 int retval = platform_driver_probe(&ne_driver, ne_drv_probe);
973
974 /* Unregister unused platform_devices. */
975 ne_loop_rm_unreg(0);
976 return retval;
64916f1e 977}
fbb80230 978module_init(ne_init);
64916f1e 979
fbb80230 980struct net_device * __init ne_probe(int unit)
1da177e4
LT		 981{
982 int this_dev;
fbb80230
DF		 983 struct net_device *dev;
984
985 /* Find an empty slot, that is no net_device and zero io port. */
986 this_dev = 0;
987 while ((pdev_ne[this_dev] && platform_get_drvdata(pdev_ne[this_dev])) ||
988 io[this_dev]) {
989 if (++this_dev == MAX_NE_CARDS)
990 return ERR_PTR(-ENOMEM);
991 }
992
993 /* Get irq, io from kernel command line */
994 dev = alloc_eip_netdev();
995 if (!dev)
996 return ERR_PTR(-ENOMEM);
1da177e4 997
fbb80230
DF		 998 sprintf(dev->name, "eth%d", unit);
999 netdev_boot_setup_check(dev);
1000
1001 io[this_dev] = dev->base_addr;
1002 irq[this_dev] = dev->irq;
1003 bad[this_dev] = dev->mem_end;
1004
1005 free_netdev(dev);
1006
1007 ne_add_devices();
1008
1009 /* return the first device found */
1da177e4 1010 for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
fbb80230
DF		 1011 if (pdev_ne[this_dev]) {
1012 dev = platform_get_drvdata(pdev_ne[this_dev]);
1013 if (dev)
1014 return dev;
1da177e4
LT		 1015 }
1016 }
fbb80230
DF		 1017
1018 return ERR_PTR(-ENODEV);
1da177e4
LT		 1019}
1020#endif /* MODULE */
fbb80230
DF		 1021
1022static void __exit ne_exit(void)
1023{
1024 platform_driver_unregister(&ne_driver);
1025 ne_loop_rm_unreg(1);
1026}
1027module_exit(ne_exit);
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