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Merge branch 'drm-for-2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/airlie...
[deliverable/linux.git] / drivers / net / wd.c
CommitLineData
1da177e4
LT		 1/* wd.c: A WD80x3 ethernet driver for linux. */
2/*
3 Written 1993-94 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
13 410 Severn Ave., Suite 210
14 Annapolis MD 21403
15
16 This is a driver for WD8003 and WD8013 "compatible" ethercards.
17
18 Thanks to Russ Nelson (nelson@crnwyr.com) for loaning me a WD8013.
19
20 Changelog:
21
22 Paul Gortmaker : multiple card support for module users, support
23 for non-standard memory sizes.
24
25
26*/
27
28static const char version[] =
29 "wd.c:v1.10 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
30
31#include <linux/module.h>
32#include <linux/kernel.h>
33#include <linux/errno.h>
34#include <linux/string.h>
35#include <linux/init.h>
36#include <linux/interrupt.h>
37#include <linux/delay.h>
38#include <linux/netdevice.h>
39#include <linux/etherdevice.h>
40
41#include <asm/io.h>
42#include <asm/system.h>
43
44#include "8390.h"
45
46#define DRV_NAME "wd"
47
48/* A zero-terminated list of I/O addresses to be probed. */
49static unsigned int wd_portlist[] __initdata =
50{0x300, 0x280, 0x380, 0x240, 0};
51
52static int wd_probe1(struct net_device *dev, int ioaddr);
53
54static int wd_open(struct net_device *dev);
55static void wd_reset_8390(struct net_device *dev);
56static void wd_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
57 int ring_page);
58static void wd_block_input(struct net_device *dev, int count,
59 struct sk_buff *skb, int ring_offset);
60static void wd_block_output(struct net_device *dev, int count,
61 const unsigned char *buf, int start_page);
62static int wd_close(struct net_device *dev);
63
6aa20a22 64
1da177e4
LT		 65#define WD_START_PG 0x00 /* First page of TX buffer */
66#define WD03_STOP_PG 0x20 /* Last page +1 of RX ring */
67#define WD13_STOP_PG 0x40 /* Last page +1 of RX ring */
68
69#define WD_CMDREG 0 /* Offset to ASIC command register. */
70#define WD_RESET 0x80 /* Board reset, in WD_CMDREG. */
71#define WD_MEMENB 0x40 /* Enable the shared memory. */
72#define WD_CMDREG5 5 /* Offset to 16-bit-only ASIC register 5. */
73#define ISA16 0x80 /* Enable 16 bit access from the ISA bus. */
74#define NIC16 0x40 /* Enable 16 bit access from the 8390. */
75#define WD_NIC_OFFSET 16 /* Offset to the 8390 from the base_addr. */
76#define WD_IO_EXTENT 32
77
6aa20a22 78
1da177e4
LT		 79/* Probe for the WD8003 and WD8013. These cards have the station
80 address PROM at I/O ports <base>+8 to <base>+13, with a checksum
81 following. A Soundblaster can have the same checksum as an WDethercard,
82 so we have an extra exclusionary check for it.
83
84 The wd_probe1() routine initializes the card and fills the
85 station address field. */
86
87static int __init do_wd_probe(struct net_device *dev)
88{
89 int i;
90 struct resource *r;
91 int base_addr = dev->base_addr;
92 int irq = dev->irq;
93 int mem_start = dev->mem_start;
94 int mem_end = dev->mem_end;
95
1da177e4
LT		 96 if (base_addr > 0x1ff) { /* Check a user specified location. */
97 r = request_region(base_addr, WD_IO_EXTENT, "wd-probe");
98 if ( r == NULL)
99 return -EBUSY;
100 i = wd_probe1(dev, base_addr);
6aa20a22 101 if (i != 0)
1da177e4
LT		 102 release_region(base_addr, WD_IO_EXTENT);
103 else
104 r->name = dev->name;
105 return i;
106 }
107 else if (base_addr != 0) /* Don't probe at all. */
108 return -ENXIO;
109
110 for (i = 0; wd_portlist[i]; i++) {
111 int ioaddr = wd_portlist[i];
112 r = request_region(ioaddr, WD_IO_EXTENT, "wd-probe");
113 if (r == NULL)
114 continue;
115 if (wd_probe1(dev, ioaddr) == 0) {
116 r->name = dev->name;
117 return 0;
118 }
119 release_region(ioaddr, WD_IO_EXTENT);
120 dev->irq = irq;
121 dev->mem_start = mem_start;
122 dev->mem_end = mem_end;
123 }
124
125 return -ENODEV;
126}
127
1da177e4
LT		 128#ifndef MODULE
129struct net_device * __init wd_probe(int unit)
130{
131 struct net_device *dev = alloc_ei_netdev();
132 int err;
133
134 if (!dev)
135 return ERR_PTR(-ENOMEM);
136
137 sprintf(dev->name, "eth%d", unit);
138 netdev_boot_setup_check(dev);
139
140 err = do_wd_probe(dev);
141 if (err)
142 goto out;
1da177e4 143 return dev;
1da177e4
LT		 144out:
145 free_netdev(dev);
146 return ERR_PTR(err);
147}
148#endif
149
458228bc
SH		 150static const struct net_device_ops wd_netdev_ops = {
151 .ndo_open = wd_open,
152 .ndo_stop = wd_close,
153 .ndo_start_xmit = ei_start_xmit,
154 .ndo_tx_timeout = ei_tx_timeout,
155 .ndo_get_stats = ei_get_stats,
156 .ndo_set_multicast_list = ei_set_multicast_list,
157 .ndo_validate_addr = eth_validate_addr,
fe96aaa1 158 .ndo_set_mac_address = eth_mac_addr,
458228bc
SH		 159 .ndo_change_mtu = eth_change_mtu,
160#ifdef CONFIG_NET_POLL_CONTROLLER
161 .ndo_poll_controller = ei_poll,
162#endif
163};
164
1da177e4
LT		 165static int __init wd_probe1(struct net_device *dev, int ioaddr)
166{
167 int i;
b1fc5505 168 int err;
1da177e4
LT		 169 int checksum = 0;
170 int ancient = 0; /* An old card without config registers. */
171 int word16 = 0; /* 0 = 8 bit, 1 = 16 bit */
172 const char *model_name;
173 static unsigned version_printed;
174
175 for (i = 0; i < 8; i++)
176 checksum += inb(ioaddr + 8 + i);
177 if (inb(ioaddr + 8) == 0xff /* Extra check to avoid soundcard. */
178 || inb(ioaddr + 9) == 0xff
179 || (checksum & 0xff) != 0xFF)
180 return -ENODEV;
181
182 /* Check for semi-valid mem_start/end values if supplied. */
183 if ((dev->mem_start % 0x2000) || (dev->mem_end % 0x2000)) {
184 printk(KERN_WARNING "wd.c: user supplied mem_start or mem_end not on 8kB boundary - ignored.\n");
185 dev->mem_start = 0;
186 dev->mem_end = 0;
187 }
188
189 if (ei_debug && version_printed++ == 0)
190 printk(version);
191
1da177e4 192 for (i = 0; i < 6; i++)
0795af57
JP		 193 dev->dev_addr[i] = inb(ioaddr + 8 + i);
194
e174961c
JB		 195 printk("%s: WD80x3 at %#3x, %pM",
196 dev->name, ioaddr, dev->dev_addr);
1da177e4
LT		 197
198 /* The following PureData probe code was contributed by
199 Mike Jagdis <jaggy@purplet.demon.co.uk>. Puredata does software
200 configuration differently from others so we have to check for them.
201 This detects an 8 bit, 16 bit or dumb (Toshiba, jumpered) card.
202 */
203 if (inb(ioaddr+0) == 'P' && inb(ioaddr+1) == 'D') {
204 unsigned char reg5 = inb(ioaddr+5);
205
206 switch (inb(ioaddr+2)) {
207 case 0x03: word16 = 0; model_name = "PDI8023-8"; break;
208 case 0x05: word16 = 0; model_name = "PDUC8023"; break;
209 case 0x0a: word16 = 1; model_name = "PDI8023-16"; break;
210 /* Either 0x01 (dumb) or they've released a new version. */
211 default: word16 = 0; model_name = "PDI8023"; break;
212 }
213 dev->mem_start = ((reg5 & 0x1c) + 0xc0) << 12;
214 dev->irq = (reg5 & 0xe0) == 0xe0 ? 10 : (reg5 >> 5) + 1;
215 } else { /* End of PureData probe */
216 /* This method of checking for a 16-bit board is borrowed from the
217 we.c driver. A simpler method is just to look in ASIC reg. 0x03.
218 I'm comparing the two method in alpha test to make certain they
219 return the same result. */
220 /* Check for the old 8 bit board - it has register 0/8 aliasing.
221 Do NOT check i>=6 here -- it hangs the old 8003 boards! */
222 for (i = 0; i < 6; i++)
223 if (inb(ioaddr+i) != inb(ioaddr+8+i))
224 break;
225 if (i >= 6) {
226 ancient = 1;
227 model_name = "WD8003-old";
228 word16 = 0;
229 } else {
230 int tmp = inb(ioaddr+1); /* fiddle with 16bit bit */
231 outb( tmp ^ 0x01, ioaddr+1 ); /* attempt to clear 16bit bit */
232 if (((inb( ioaddr+1) & 0x01) == 0x01) /* A 16 bit card */
233 && (tmp & 0x01) == 0x01 ) { /* In a 16 slot. */
234 int asic_reg5 = inb(ioaddr+WD_CMDREG5);
235 /* Magic to set ASIC to word-wide mode. */
236 outb( NIC16 | (asic_reg5&0x1f), ioaddr+WD_CMDREG5);
237 outb(tmp, ioaddr+1);
238 model_name = "WD8013";
239 word16 = 1; /* We have a 16bit board here! */
240 } else {
241 model_name = "WD8003";
242 word16 = 0;
243 }
244 outb(tmp, ioaddr+1); /* Restore original reg1 value. */
245 }
246#ifndef final_version
247 if ( !ancient && (inb(ioaddr+1) & 0x01) != (word16 & 0x01))
248 printk("\nWD80?3: Bus width conflict, %d (probe) != %d (reg report).",
249 word16 ? 16 : 8, (inb(ioaddr+1) & 0x01) ? 16 : 8);
250#endif
251 }
252
253#if defined(WD_SHMEM) && WD_SHMEM > 0x80000
254 /* Allow a compile-time override. */
255 dev->mem_start = WD_SHMEM;
256#else
257 if (dev->mem_start == 0) {
258 /* Sanity and old 8003 check */
259 int reg0 = inb(ioaddr);
260 if (reg0 == 0xff || reg0 == 0) {
261 /* Future plan: this could check a few likely locations first. */
262 dev->mem_start = 0xd0000;
263 printk(" assigning address %#lx", dev->mem_start);
264 } else {
265 int high_addr_bits = inb(ioaddr+WD_CMDREG5) & 0x1f;
266 /* Some boards don't have the register 5 -- it returns 0xff. */
267 if (high_addr_bits == 0x1f || word16 == 0)
268 high_addr_bits = 0x01;
269 dev->mem_start = ((reg0&0x3f) << 13) + (high_addr_bits << 19);
270 }
271 }
272#endif
273
274 /* The 8390 isn't at the base address -- the ASIC regs are there! */
275 dev->base_addr = ioaddr+WD_NIC_OFFSET;
276
277 if (dev->irq < 2) {
278 int irqmap[] = {9,3,5,7,10,11,15,4};
279 int reg1 = inb(ioaddr+1);
280 int reg4 = inb(ioaddr+4);
281 if (ancient || reg1 == 0xff) { /* Ack!! No way to read the IRQ! */
282 short nic_addr = ioaddr+WD_NIC_OFFSET;
283 unsigned long irq_mask;
284
285 /* We have an old-style ethercard that doesn't report its IRQ
286 line. Do autoirq to find the IRQ line. Note that this IS NOT
287 a reliable way to trigger an interrupt. */
288 outb_p(E8390_NODMA + E8390_STOP, nic_addr);
289 outb(0x00, nic_addr+EN0_IMR); /* Disable all intrs. */
6aa20a22 290
1da177e4
LT		 291 irq_mask = probe_irq_on();
292 outb_p(0xff, nic_addr + EN0_IMR); /* Enable all interrupts. */
293 outb_p(0x00, nic_addr + EN0_RCNTLO);
294 outb_p(0x00, nic_addr + EN0_RCNTHI);
295 outb(E8390_RREAD+E8390_START, nic_addr); /* Trigger it... */
296 mdelay(20);
297 dev->irq = probe_irq_off(irq_mask);
6aa20a22 298
1da177e4
LT		 299 outb_p(0x00, nic_addr+EN0_IMR); /* Mask all intrs. again. */
300
301 if (ei_debug > 2)
302 printk(" autoirq is %d", dev->irq);
303 if (dev->irq < 2)
304 dev->irq = word16 ? 10 : 5;
305 } else
306 dev->irq = irqmap[((reg4 >> 5) & 0x03) + (reg1 & 0x04)];
307 } else if (dev->irq == 2) /* Fixup bogosity: IRQ2 is really IRQ9 */
308 dev->irq = 9;
309
310 /* Snarf the interrupt now. There's no point in waiting since we cannot
311 share and the board will usually be enabled. */
312 i = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
313 if (i) {
314 printk (" unable to get IRQ %d.\n", dev->irq);
315 return i;
316 }
317
318 /* OK, were are certain this is going to work. Setup the device. */
319 ei_status.name = model_name;
320 ei_status.word16 = word16;
321 ei_status.tx_start_page = WD_START_PG;
322 ei_status.rx_start_page = WD_START_PG + TX_PAGES;
323
324 /* Don't map in the shared memory until the board is actually opened. */
325
326 /* Some cards (eg WD8003EBT) can be jumpered for more (32k!) memory. */
327 if (dev->mem_end != 0) {
328 ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
329 ei_status.priv = dev->mem_end - dev->mem_start;
330 } else {
331 ei_status.stop_page = word16 ? WD13_STOP_PG : WD03_STOP_PG;
332 dev->mem_end = dev->mem_start + (ei_status.stop_page - WD_START_PG)*256;
333 ei_status.priv = (ei_status.stop_page - WD_START_PG)*256;
334 }
335
336 ei_status.mem = ioremap(dev->mem_start, ei_status.priv);
337 if (!ei_status.mem) {
338 free_irq(dev->irq, dev);
339 return -ENOMEM;
340 }
341
342 printk(" %s, IRQ %d, shared memory at %#lx-%#lx.\n",
343 model_name, dev->irq, dev->mem_start, dev->mem_end-1);
344
345 ei_status.reset_8390 = &wd_reset_8390;
346 ei_status.block_input = &wd_block_input;
347 ei_status.block_output = &wd_block_output;
348 ei_status.get_8390_hdr = &wd_get_8390_hdr;
458228bc
SH		 349
350 dev->netdev_ops = &wd_netdev_ops;
d3d7b53d 351 NS8390_init(dev, 0);
1da177e4
LT		 352
353#if 1
354 /* Enable interrupt generation on softconfig cards -- M.U */
355 /* .. but possibly potentially unsafe - Donald */
356 if (inb(ioaddr+14) & 0x20)
357 outb(inb(ioaddr+4)|0x80, ioaddr+4);
358#endif
359
b1fc5505 360 err = register_netdev(dev);
361 if (err)
362 free_irq(dev->irq, dev);
363 return err;
1da177e4
LT		 364}
365
366static int
367wd_open(struct net_device *dev)
368{
369 int ioaddr = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
370
371 /* Map in the shared memory. Always set register 0 last to remain
372 compatible with very old boards. */
373 ei_status.reg0 = ((dev->mem_start>>13) & 0x3f) | WD_MEMENB;
374 ei_status.reg5 = ((dev->mem_start>>19) & 0x1f) | NIC16;
375
376 if (ei_status.word16)
377 outb(ei_status.reg5, ioaddr+WD_CMDREG5);
378 outb(ei_status.reg0, ioaddr); /* WD_CMDREG */
379
458228bc 380 return ei_open(dev);
1da177e4
LT		 381}
382
383static void
384wd_reset_8390(struct net_device *dev)
385{
386 int wd_cmd_port = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
387
388 outb(WD_RESET, wd_cmd_port);
389 if (ei_debug > 1) printk("resetting the WD80x3 t=%lu...", jiffies);
390 ei_status.txing = 0;
391
392 /* Set up the ASIC registers, just in case something changed them. */
393 outb((((dev->mem_start>>13) & 0x3f)|WD_MEMENB), wd_cmd_port);
394 if (ei_status.word16)
395 outb(NIC16 | ((dev->mem_start>>19) & 0x1f), wd_cmd_port+WD_CMDREG5);
396
397 if (ei_debug > 1) printk("reset done\n");
1da177e4
LT		 398}
399
400/* Grab the 8390 specific header. Similar to the block_input routine, but
401 we don't need to be concerned with ring wrap as the header will be at
402 the start of a page, so we optimize accordingly. */
403
404static void
405wd_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
406{
407
408 int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
409 void __iomem *hdr_start = ei_status.mem + ((ring_page - WD_START_PG)<<8);
410
411 /* We'll always get a 4 byte header read followed by a packet read, so
412 we enable 16 bit mode before the header, and disable after the body. */
413 if (ei_status.word16)
414 outb(ISA16 | ei_status.reg5, wd_cmdreg+WD_CMDREG5);
415
416#ifdef __BIG_ENDIAN
417 /* Officially this is what we are doing, but the readl() is faster */
418 /* unfortunately it isn't endian aware of the struct */
419 memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
420 hdr->count = le16_to_cpu(hdr->count);
421#else
422 ((unsigned int*)hdr)[0] = readl(hdr_start);
423#endif
424}
425
426/* Block input and output are easy on shared memory ethercards, and trivial
427 on the Western digital card where there is no choice of how to do it.
428 The only complications are that the ring buffer wraps, and need to map
429 switch between 8- and 16-bit modes. */
430
431static void
432wd_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
433{
434 int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
435 unsigned long offset = ring_offset - (WD_START_PG<<8);
436 void __iomem *xfer_start = ei_status.mem + offset;
437
438 if (offset + count > ei_status.priv) {
439 /* We must wrap the input move. */
440 int semi_count = ei_status.priv - offset;
441 memcpy_fromio(skb->data, xfer_start, semi_count);
442 count -= semi_count;
443 memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
444 } else {
445 /* Packet is in one chunk -- we can copy + cksum. */
4ec03116 446 memcpy_fromio(skb->data, xfer_start, count);
1da177e4
LT		 447 }
448
449 /* Turn off 16 bit access so that reboot works. ISA brain-damage */
450 if (ei_status.word16)
451 outb(ei_status.reg5, wd_cmdreg+WD_CMDREG5);
452}
453
454static void
455wd_block_output(struct net_device *dev, int count, const unsigned char *buf,
456 int start_page)
457{
458 int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
459 void __iomem *shmem = ei_status.mem + ((start_page - WD_START_PG)<<8);
460
461
462 if (ei_status.word16) {
463 /* Turn on and off 16 bit access so that reboot works. */
464 outb(ISA16 | ei_status.reg5, wd_cmdreg+WD_CMDREG5);
465 memcpy_toio(shmem, buf, count);
466 outb(ei_status.reg5, wd_cmdreg+WD_CMDREG5);
467 } else
468 memcpy_toio(shmem, buf, count);
469}
470
471
472static int
473wd_close(struct net_device *dev)
474{
475 int wd_cmdreg = dev->base_addr - WD_NIC_OFFSET; /* WD_CMDREG */
476
477 if (ei_debug > 1)
478 printk("%s: Shutting down ethercard.\n", dev->name);
479 ei_close(dev);
480
481 /* Change from 16-bit to 8-bit shared memory so reboot works. */
482 if (ei_status.word16)
483 outb(ei_status.reg5, wd_cmdreg + WD_CMDREG5 );
484
485 /* And disable the shared memory. */
486 outb(ei_status.reg0 & ~WD_MEMENB, wd_cmdreg);
487
488 return 0;
489}
490
6aa20a22 491
1da177e4
LT		 492#ifdef MODULE
493#define MAX_WD_CARDS 4 /* Max number of wd cards per module */
494static struct net_device *dev_wd[MAX_WD_CARDS];
495static int io[MAX_WD_CARDS];
496static int irq[MAX_WD_CARDS];
497static int mem[MAX_WD_CARDS];
498static int mem_end[MAX_WD_CARDS]; /* for non std. mem size */
499
500module_param_array(io, int, NULL, 0);
501module_param_array(irq, int, NULL, 0);
502module_param_array(mem, int, NULL, 0);
503module_param_array(mem_end, int, NULL, 0);
504MODULE_PARM_DESC(io, "I/O base address(es)");
505MODULE_PARM_DESC(irq, "IRQ number(s) (ignored for PureData boards)");
506MODULE_PARM_DESC(mem, "memory base address(es)(ignored for PureData boards)");
507MODULE_PARM_DESC(mem_end, "memory end address(es)");
508MODULE_DESCRIPTION("ISA Western Digital wd8003/wd8013 ; SMC Elite, Elite16 ethernet driver");
509MODULE_LICENSE("GPL");
510
511/* This is set up so that only a single autoprobe takes place per call.
512ISA device autoprobes on a running machine are not recommended. */
5e5fa01d
AM		 513
514int __init init_module(void)
1da177e4
LT		 515{
516 struct net_device *dev;
517 int this_dev, found = 0;
518
519 for (this_dev = 0; this_dev < MAX_WD_CARDS; this_dev++) {
520 if (io[this_dev] == 0) {
521 if (this_dev != 0) break; /* only autoprobe 1st one */
522 printk(KERN_NOTICE "wd.c: Presently autoprobing (not recommended) for a single card.\n");
523 }
524 dev = alloc_ei_netdev();
525 if (!dev)
526 break;
527 dev->irq = irq[this_dev];
528 dev->base_addr = io[this_dev];
529 dev->mem_start = mem[this_dev];
530 dev->mem_end = mem_end[this_dev];
531 if (do_wd_probe(dev) == 0) {
b1fc5505 532 dev_wd[found++] = dev;
533 continue;
1da177e4
LT		 534 }
535 free_netdev(dev);
536 printk(KERN_WARNING "wd.c: No wd80x3 card found (i/o = 0x%x).\n", io[this_dev]);
537 break;
538 }
539 if (found)
540 return 0;
541 return -ENXIO;
542}
543
64916f1e
DV		 544static void cleanup_card(struct net_device *dev)
545{
546 free_irq(dev->irq, dev);
547 release_region(dev->base_addr - WD_NIC_OFFSET, WD_IO_EXTENT);
548 iounmap(ei_status.mem);
549}
550
afc8eb46 551void __exit
1da177e4
LT		 552cleanup_module(void)
553{
554 int this_dev;
555
556 for (this_dev = 0; this_dev < MAX_WD_CARDS; this_dev++) {
557 struct net_device *dev = dev_wd[this_dev];
558 if (dev) {
559 unregister_netdev(dev);
560 cleanup_card(dev);
561 free_netdev(dev);
562 }
563 }
564}
565#endif /* MODULE */
Linux kernel - Deliverables
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