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dm9000: Support MAC address setting through platform data.
[deliverable/linux.git] / drivers / net / 3c523.c
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1da177e4
LT		 1/*
2 net-3-driver for the 3c523 Etherlink/MC card (i82586 Ethernet chip)
3
4
5 This is an extension to the Linux operating system, and is covered by the
6 same GNU General Public License that covers that work.
7
8 Copyright 1995, 1996 by Chris Beauregard (cpbeaure@undergrad.math.uwaterloo.ca)
9
10 This is basically Michael Hipp's ni52 driver, with a new probing
11 algorithm and some minor changes to the 82586 CA and reset routines.
12 Thanks a lot Michael for a really clean i82586 implementation! Unless
13 otherwise documented in ni52.c, any bugs are mine.
14
15 Contrary to the Ethernet-HOWTO, this isn't based on the 3c507 driver in
16 any way. The ni52 is a lot easier to modify.
17
18 sources:
19 ni52.c
20
21 Crynwr packet driver collection was a great reference for my first
22 attempt at this sucker. The 3c507 driver also helped, until I noticed
23 that ni52.c was a lot nicer.
24
25 EtherLink/MC: Micro Channel Ethernet Adapter Technical Reference
26 Manual, courtesy of 3Com CardFacts, documents the 3c523-specific
27 stuff. Information on CardFacts is found in the Ethernet HOWTO.
28 Also see <a href="http://www.3com.com/">
29
30 Microprocessor Communications Support Chips, T.J. Byers, ISBN
31 0-444-01224-9, has a section on the i82586. It tells you just enough
32 to know that you really don't want to learn how to program the chip.
33
34 The original device probe code was stolen from ps2esdi.c
35
36 Known Problems:
37 Since most of the code was stolen from ni52.c, you'll run across the
38 same bugs in the 0.62 version of ni52.c, plus maybe a few because of
39 the 3c523 idiosynchacies. The 3c523 has 16K of RAM though, so there
40 shouldn't be the overrun problem that the 8K ni52 has.
41
42 This driver is for a 16K adapter. It should work fine on the 64K
43 adapters, but it will only use one of the 4 banks of RAM. Modifying
44 this for the 64K version would require a lot of heinous bank
45 switching, which I'm sure not interested in doing. If you try to
46 implement a bank switching version, you'll basically have to remember
47 what bank is enabled and do a switch everytime you access a memory
48 location that's not current. You'll also have to remap pointers on
49 the driver side, because it only knows about 16K of the memory.
50 Anyone desperate or masochistic enough to try?
51
52 It seems to be stable now when multiple transmit buffers are used. I
53 can't see any performance difference, but then I'm working on a 386SX.
54
55 Multicast doesn't work. It doesn't even pretend to work. Don't use
56 it. Don't compile your kernel with multicast support. I don't know
57 why.
58
59 Features:
60 This driver is useable as a loadable module. If you try to specify an
61 IRQ or a IO address (via insmod 3c523.o irq=xx io=0xyyy), it will
62 search the MCA slots until it finds a 3c523 with the specified
63 parameters.
64
65 This driver does support multiple ethernet cards when used as a module
66 (up to MAX_3C523_CARDS, the default being 4)
67
68 This has been tested with both BNC and TP versions, internal and
69 external transceivers. Haven't tested with the 64K version (that I
70 know of).
71
72 History:
73 Jan 1st, 1996
74 first public release
75 Feb 4th, 1996
76 update to 1.3.59, incorporated multicast diffs from ni52.c
77 Feb 15th, 1996
78 added shared irq support
79 Apr 1999
80 added support for multiple cards when used as a module
81 added option to disable multicast as is causes problems
82 Ganesh Sittampalam <ganesh.sittampalam@magdalen.oxford.ac.uk>
83 Stuart Adamson <stuart.adamson@compsoc.net>
84 Nov 2001
85 added support for ethtool (jgarzik)
6aa20a22 86
1da177e4
LT		 87 $Header: /fsys2/home/chrisb/linux-1.3.59-MCA/drivers/net/RCS/3c523.c,v 1.1 1996/02/05 01:53:46 chrisb Exp chrisb $
88 */
89
90#define DRV_NAME "3c523"
91#define DRV_VERSION "17-Nov-2001"
92
93#include <linux/init.h>
94#include <linux/netdevice.h>
95#include <linux/etherdevice.h>
96#include <linux/module.h>
97#include <linux/kernel.h>
98#include <linux/string.h>
99#include <linux/errno.h>
100#include <linux/ioport.h>
101#include <linux/skbuff.h>
102#include <linux/slab.h>
103#include <linux/interrupt.h>
104#include <linux/delay.h>
105#include <linux/mca-legacy.h>
106#include <linux/ethtool.h>
107#include <linux/bitops.h>
ff5688ae 108#include <linux/jiffies.h>
1da177e4
LT		 109
110#include <asm/uaccess.h>
111#include <asm/processor.h>
112#include <asm/io.h>
113
114#include "3c523.h"
115
116/*************************************************************************/
117#define DEBUG /* debug on */
118#define SYSBUSVAL 0 /* 1 = 8 Bit, 0 = 16 bit - 3c523 only does 16 bit */
119#undef ELMC_MULTICAST /* Disable multicast support as it is somewhat seriously broken at the moment */
120
121#define make32(ptr16) (p->memtop + (short) (ptr16) )
122#define make24(ptr32) ((char *) (ptr32) - p->base)
123#define make16(ptr32) ((unsigned short) ((unsigned long) (ptr32) - (unsigned long) p->memtop ))
124
125/*************************************************************************/
126/*
127 Tables to which we can map values in the configuration registers.
128 */
129static int irq_table[] __initdata = {
130 12, 7, 3, 9
131};
132
133static int csr_table[] __initdata = {
134 0x300, 0x1300, 0x2300, 0x3300
135};
136
137static int shm_table[] __initdata = {
138 0x0c0000, 0x0c8000, 0x0d0000, 0x0d8000
139};
140
141/******************* how to calculate the buffers *****************************
142
143
144 * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
145 * --------------- in a different (more stable?) mode. Only in this mode it's
146 * possible to configure the driver with 'NO_NOPCOMMANDS'
147
148sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
149sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
150sizeof(rfd) = 24; sizeof(rbd) = 12;
151sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
152sizeof(nop_cmd) = 8;
153
154 * if you don't know the driver, better do not change this values: */
155
156#define RECV_BUFF_SIZE 1524 /* slightly oversized */
157#define XMIT_BUFF_SIZE 1524 /* slightly oversized */
158#define NUM_XMIT_BUFFS 1 /* config for both, 8K and 16K shmem */
159#define NUM_RECV_BUFFS_8 4 /* config for 8K shared mem */
160#define NUM_RECV_BUFFS_16 9 /* config for 16K shared mem */
161
162#if (NUM_XMIT_BUFFS == 1)
163#define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
164#endif
165
166/**************************************************************************/
167
168#define DELAY(x) { mdelay(32 * x); }
169
170/* a much shorter delay: */
171#define DELAY_16(); { udelay(16) ; }
172
173/* wait for command with timeout: */
174#define WAIT_4_SCB_CMD() { int i; \
175 for(i=0;i<1024;i++) { \
176 if(!p->scb->cmd) break; \
177 DELAY_16(); \
178 if(i == 1023) { \
179 printk(KERN_WARNING "%s:%d: scb_cmd timed out .. resetting i82586\n",\
180 dev->name,__LINE__); \
181 elmc_id_reset586(); } } }
182
7d12e780 183static irqreturn_t elmc_interrupt(int irq, void *dev_id);
1da177e4
LT		 184static int elmc_open(struct net_device *dev);
185static int elmc_close(struct net_device *dev);
186static int elmc_send_packet(struct sk_buff *, struct net_device *);
187static struct net_device_stats *elmc_get_stats(struct net_device *dev);
188static void elmc_timeout(struct net_device *dev);
189#ifdef ELMC_MULTICAST
190static void set_multicast_list(struct net_device *dev);
191#endif
7282d491 192static const struct ethtool_ops netdev_ethtool_ops;
1da177e4
LT		 193
194/* helper-functions */
195static int init586(struct net_device *dev);
196static int check586(struct net_device *dev, unsigned long where, unsigned size);
197static void alloc586(struct net_device *dev);
198static void startrecv586(struct net_device *dev);
199static void *alloc_rfa(struct net_device *dev, void *ptr);
200static void elmc_rcv_int(struct net_device *dev);
201static void elmc_xmt_int(struct net_device *dev);
202static void elmc_rnr_int(struct net_device *dev);
203
204struct priv {
1da177e4
LT		 205 unsigned long base;
206 char *memtop;
207 unsigned long mapped_start; /* Start of ioremap */
208 volatile struct rfd_struct *rfd_last, *rfd_top, *rfd_first;
209 volatile struct scp_struct *scp; /* volatile is important */
210 volatile struct iscp_struct *iscp; /* volatile is important */
211 volatile struct scb_struct *scb; /* volatile is important */
212 volatile struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS];
213#if (NUM_XMIT_BUFFS == 1)
214 volatile struct transmit_cmd_struct *xmit_cmds[2];
215 volatile struct nop_cmd_struct *nop_cmds[2];
216#else
217 volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
218 volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
219#endif
220 volatile int nop_point, num_recv_buffs;
221 volatile char *xmit_cbuffs[NUM_XMIT_BUFFS];
222 volatile int xmit_count, xmit_last;
223 volatile int slot;
224};
225
226#define elmc_attn586() {elmc_do_attn586(dev->base_addr,ELMC_CTRL_INTE);}
227#define elmc_reset586() {elmc_do_reset586(dev->base_addr,ELMC_CTRL_INTE);}
228
229/* with interrupts disabled - this will clear the interrupt bit in the
230 3c523 control register, and won't put it back. This effectively
231 disables interrupts on the card. */
232#define elmc_id_attn586() {elmc_do_attn586(dev->base_addr,0);}
233#define elmc_id_reset586() {elmc_do_reset586(dev->base_addr,0);}
234
235/*************************************************************************/
236/*
237 Do a Channel Attention on the 3c523. This is extremely board dependent.
238 */
239static void elmc_do_attn586(int ioaddr, int ints)
240{
241 /* the 3c523 requires a minimum of 500 ns. The delays here might be
242 a little too large, and hence they may cut the performance of the
243 card slightly. If someone who knows a little more about Linux
244 timing would care to play with these, I'd appreciate it. */
245
246 /* this bit masking stuff is crap. I'd rather have separate
247 registers with strobe triggers for each of these functions. <sigh>
248 Ya take what ya got. */
249
250 outb(ELMC_CTRL_RST | 0x3 | ELMC_CTRL_CA | ints, ioaddr + ELMC_CTRL);
251 DELAY_16(); /* > 500 ns */
252 outb(ELMC_CTRL_RST | 0x3 | ints, ioaddr + ELMC_CTRL);
253}
254
255/*************************************************************************/
256/*
257 Reset the 82586 on the 3c523. Also very board dependent.
258 */
259static void elmc_do_reset586(int ioaddr, int ints)
260{
261 /* toggle the RST bit low then high */
262 outb(0x3 | ELMC_CTRL_LBK, ioaddr + ELMC_CTRL);
263 DELAY_16(); /* > 500 ns */
264 outb(ELMC_CTRL_RST | ELMC_CTRL_LBK | 0x3, ioaddr + ELMC_CTRL);
265
266 elmc_do_attn586(ioaddr, ints);
267}
268
269/**********************************************
270 * close device
271 */
272
273static int elmc_close(struct net_device *dev)
274{
275 netif_stop_queue(dev);
276 elmc_id_reset586(); /* the hard way to stop the receiver */
277 free_irq(dev->irq, dev);
278 return 0;
279}
280
281/**********************************************
282 * open device
283 */
284
285static int elmc_open(struct net_device *dev)
286{
287 int ret;
288
289 elmc_id_attn586(); /* disable interrupts */
290
1fb9df5d 291 ret = request_irq(dev->irq, &elmc_interrupt, IRQF_SHARED | IRQF_SAMPLE_RANDOM,
1da177e4
LT		 292 dev->name, dev);
293 if (ret) {
294 printk(KERN_ERR "%s: couldn't get irq %d\n", dev->name, dev->irq);
295 elmc_id_reset586();
296 return ret;
297 }
298 alloc586(dev);
299 init586(dev);
300 startrecv586(dev);
301 netif_start_queue(dev);
302 return 0; /* most done by init */
303}
304
305/**********************************************
306 * Check to see if there's an 82586 out there.
307 */
308
309static int __init check586(struct net_device *dev, unsigned long where, unsigned size)
310{
311 struct priv *p = (struct priv *) dev->priv;
312 char *iscp_addrs[2];
313 int i = 0;
314
315 p->base = (unsigned long) isa_bus_to_virt((unsigned long)where) + size - 0x01000000;
316 p->memtop = isa_bus_to_virt((unsigned long)where) + size;
317 p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
318 memset((char *) p->scp, 0, sizeof(struct scp_struct));
319 p->scp->sysbus = SYSBUSVAL; /* 1 = 8Bit-Bus, 0 = 16 Bit */
320
321 iscp_addrs[0] = isa_bus_to_virt((unsigned long)where);
322 iscp_addrs[1] = (char *) p->scp - sizeof(struct iscp_struct);
323
324 for (i = 0; i < 2; i++) {
325 p->iscp = (struct iscp_struct *) iscp_addrs[i];
326 memset((char *) p->iscp, 0, sizeof(struct iscp_struct));
327
328 p->scp->iscp = make24(p->iscp);
329 p->iscp->busy = 1;
330
331 elmc_id_reset586();
332
333 /* reset586 does an implicit CA */
334
335 /* apparently, you sometimes have to kick the 82586 twice... */
336 elmc_id_attn586();
337 DELAY(1);
338
339 if (p->iscp->busy) { /* i82586 clears 'busy' after successful init */
340 return 0;
341 }
342 }
343 return 1;
344}
345
346/******************************************************************
347 * set iscp at the right place, called by elmc_probe and open586.
348 */
349
350void alloc586(struct net_device *dev)
351{
352 struct priv *p = (struct priv *) dev->priv;
353
354 elmc_id_reset586();
355 DELAY(2);
356
357 p->scp = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);
358 p->scb = (struct scb_struct *) isa_bus_to_virt(dev->mem_start);
359 p->iscp = (struct iscp_struct *) ((char *) p->scp - sizeof(struct iscp_struct));
360
361 memset((char *) p->iscp, 0, sizeof(struct iscp_struct));
362 memset((char *) p->scp, 0, sizeof(struct scp_struct));
363
364 p->scp->iscp = make24(p->iscp);
365 p->scp->sysbus = SYSBUSVAL;
366 p->iscp->scb_offset = make16(p->scb);
367
368 p->iscp->busy = 1;
369 elmc_id_reset586();
370 elmc_id_attn586();
371
372 DELAY(2);
373
374 if (p->iscp->busy) {
375 printk(KERN_ERR "%s: Init-Problems (alloc).\n", dev->name);
376 }
377 memset((char *) p->scb, 0, sizeof(struct scb_struct));
378}
379
380/*****************************************************************/
381
382static int elmc_getinfo(char *buf, int slot, void *d)
383{
384 int len = 0;
0795af57
JP		 385 struct net_device *dev = d;
386 DECLARE_MAC_BUF(mac);
1da177e4
LT		 387
388 if (dev == NULL)
389 return len;
390
391 len += sprintf(buf + len, "Revision: 0x%x\n",
392 inb(dev->base_addr + ELMC_REVISION) & 0xf);
393 len += sprintf(buf + len, "IRQ: %d\n", dev->irq);
394 len += sprintf(buf + len, "IO Address: %#lx-%#lx\n", dev->base_addr,
395 dev->base_addr + ELMC_IO_EXTENT);
396 len += sprintf(buf + len, "Memory: %#lx-%#lx\n", dev->mem_start,
397 dev->mem_end - 1);
398 len += sprintf(buf + len, "Transceiver: %s\n", dev->if_port ?
399 "External" : "Internal");
400 len += sprintf(buf + len, "Device: %s\n", dev->name);
0795af57
JP		 401 len += sprintf(buf + len, "Hardware Address: %s\n",
402 print_mac(mac, dev->dev_addr));
1da177e4
LT		 403
404 return len;
405} /* elmc_getinfo() */
406
407/*****************************************************************/
408
409static int __init do_elmc_probe(struct net_device *dev)
410{
411 static int slot;
412 int base_addr = dev->base_addr;
413 int irq = dev->irq;
414 u_char status = 0;
415 u_char revision = 0;
416 int i = 0;
417 unsigned int size = 0;
418 int retval;
419 struct priv *pr = dev->priv;
0795af57 420 DECLARE_MAC_BUF(mac);
1da177e4 421
1da177e4
LT		 422 if (MCA_bus == 0) {
423 return -ENODEV;
424 }
425 /* search through the slots for the 3c523. */
426 slot = mca_find_adapter(ELMC_MCA_ID, 0);
427 while (slot != -1) {
428 status = mca_read_stored_pos(slot, 2);
429
430 dev->irq=irq_table[(status & ELMC_STATUS_IRQ_SELECT) >> 6];
431 dev->base_addr=csr_table[(status & ELMC_STATUS_CSR_SELECT) >> 1];
6aa20a22 432
1da177e4
LT		 433 /*
434 If we're trying to match a specified irq or IO address,
435 we'll reject a match unless it's what we're looking for.
436 Also reject it if the card is already in use.
437 */
438
6aa20a22 439 if ((irq && irq != dev->irq) ||
1da177e4
LT		 440 (base_addr && base_addr != dev->base_addr)) {
441 slot = mca_find_adapter(ELMC_MCA_ID, slot + 1);
442 continue;
443 }
444 if (!request_region(dev->base_addr, ELMC_IO_EXTENT, DRV_NAME)) {
445 slot = mca_find_adapter(ELMC_MCA_ID, slot + 1);
446 continue;
447 }
448
449 /* found what we're looking for... */
450 break;
451 }
452
453 /* we didn't find any 3c523 in the slots we checked for */
454 if (slot == MCA_NOTFOUND)
455 return ((base_addr || irq) ? -ENXIO : -ENODEV);
456
457 mca_set_adapter_name(slot, "3Com 3c523 Etherlink/MC");
458 mca_set_adapter_procfn(slot, (MCA_ProcFn) elmc_getinfo, dev);
459
460 /* if we get this far, adapter has been found - carry on */
461 printk(KERN_INFO "%s: 3c523 adapter found in slot %d\n", dev->name, slot + 1);
462
463 /* Now we extract configuration info from the card.
464 The 3c523 provides information in two of the POS registers, but
465 the second one is only needed if we want to tell the card what IRQ
466 to use. I suspect that whoever sets the thing up initially would
467 prefer we don't screw with those things.
468
469 Note that we read the status info when we found the card...
470
471 See 3c523.h for more details.
472 */
473
474 /* revision is stored in the first 4 bits of the revision register */
475 revision = inb(dev->base_addr + ELMC_REVISION) & 0xf;
476
477 /* according to docs, we read the interrupt and write it back to
478 the IRQ select register, since the POST might not configure the IRQ
479 properly. */
480 switch (dev->irq) {
481 case 3:
482 mca_write_pos(slot, 3, 0x04);
483 break;
484 case 7:
485 mca_write_pos(slot, 3, 0x02);
486 break;
487 case 9:
488 mca_write_pos(slot, 3, 0x08);
489 break;
490 case 12:
491 mca_write_pos(slot, 3, 0x01);
492 break;
493 }
494
495 memset(pr, 0, sizeof(struct priv));
496 pr->slot = slot;
497
498 printk(KERN_INFO "%s: 3Com 3c523 Rev 0x%x at %#lx\n", dev->name, (int) revision,
499 dev->base_addr);
500
501 /* Determine if we're using the on-board transceiver (i.e. coax) or
502 an external one. The information is pretty much useless, but I
503 guess it's worth brownie points. */
504 dev->if_port = (status & ELMC_STATUS_DISABLE_THIN);
505
506 /* The 3c523 has a 24K chunk of memory. The first 16K is the
507 shared memory, while the last 8K is for the EtherStart BIOS ROM.
508 Which we don't care much about here. We'll just tell Linux that
509 we're using 16K. MCA won't permit address space conflicts caused
510 by not mapping the other 8K. */
511 dev->mem_start = shm_table[(status & ELMC_STATUS_MEMORY_SELECT) >> 3];
512
513 /* We're using MCA, so it's a given that the information about memory
514 size is correct. The Crynwr drivers do something like this. */
515
516 elmc_id_reset586(); /* seems like a good idea before checking it... */
517
518 size = 0x4000; /* check for 16K mem */
519 if (!check586(dev, dev->mem_start, size)) {
520 printk(KERN_ERR "%s: memprobe, Can't find memory at 0x%lx!\n", dev->name,
521 dev->mem_start);
522 retval = -ENODEV;
523 goto err_out;
524 }
525 dev->mem_end = dev->mem_start + size; /* set mem_end showed by 'ifconfig' */
526
527 pr->memtop = isa_bus_to_virt(dev->mem_start) + size;
528 pr->base = (unsigned long) isa_bus_to_virt(dev->mem_start) + size - 0x01000000;
529 alloc586(dev);
530
531 elmc_id_reset586(); /* make sure it doesn't generate spurious ints */
532
533 /* set number of receive-buffs according to memsize */
534 pr->num_recv_buffs = NUM_RECV_BUFFS_16;
535
536 /* dump all the assorted information */
537 printk(KERN_INFO "%s: IRQ %d, %sternal xcvr, memory %#lx-%#lx.\n", dev->name,
6aa20a22 538 dev->irq, dev->if_port ? "ex" : "in",
1da177e4
LT		 539 dev->mem_start, dev->mem_end - 1);
540
541 /* The hardware address for the 3c523 is stored in the first six
542 bytes of the IO address. */
0795af57 543 for (i = 0; i < 6; i++)
1da177e4 544 dev->dev_addr[i] = inb(dev->base_addr + i);
0795af57
JP		 545
546 printk(KERN_INFO "%s: hardware address %s\n",
547 dev->name, print_mac(mac, dev->dev_addr));
1da177e4
LT		 548
549 dev->open = &elmc_open;
550 dev->stop = &elmc_close;
551 dev->get_stats = &elmc_get_stats;
552 dev->hard_start_xmit = &elmc_send_packet;
553 dev->tx_timeout = &elmc_timeout;
554 dev->watchdog_timeo = HZ;
555#ifdef ELMC_MULTICAST
556 dev->set_multicast_list = &set_multicast_list;
557#else
558 dev->set_multicast_list = NULL;
559#endif
560 dev->ethtool_ops = &netdev_ethtool_ops;
6aa20a22 561
1da177e4
LT		 562 /* note that we haven't actually requested the IRQ from the kernel.
563 That gets done in elmc_open(). I'm not sure that's such a good idea,
564 but it works, so I'll go with it. */
565
566#ifndef ELMC_MULTICAST
567 dev->flags&=~IFF_MULTICAST; /* Multicast doesn't work */
568#endif
569
b1fc5505 570 retval = register_netdev(dev);
571 if (retval)
572 goto err_out;
573
1da177e4
LT		 574 return 0;
575err_out:
576 mca_set_adapter_procfn(slot, NULL, NULL);
577 release_region(dev->base_addr, ELMC_IO_EXTENT);
578 return retval;
579}
6aa20a22 580
1da177e4
LT		 581static void cleanup_card(struct net_device *dev)
582{
583 mca_set_adapter_procfn(((struct priv *) (dev->priv))->slot, NULL, NULL);
584 release_region(dev->base_addr, ELMC_IO_EXTENT);
585}
586
587#ifndef MODULE
588struct net_device * __init elmc_probe(int unit)
589{
590 struct net_device *dev = alloc_etherdev(sizeof(struct priv));
591 int err;
592
593 if (!dev)
594 return ERR_PTR(-ENOMEM);
595
596 sprintf(dev->name, "eth%d", unit);
597 netdev_boot_setup_check(dev);
598
599 err = do_elmc_probe(dev);
600 if (err)
601 goto out;
1da177e4 602 return dev;
1da177e4
LT		 603out:
604 free_netdev(dev);
605 return ERR_PTR(err);
606}
607#endif
608
609/**********************************************
610 * init the chip (elmc-interrupt should be disabled?!)
611 * needs a correct 'allocated' memory
612 */
613
614static int init586(struct net_device *dev)
615{
616 void *ptr;
617 unsigned long s;
618 int i, result = 0;
619 struct priv *p = (struct priv *) dev->priv;
620 volatile struct configure_cmd_struct *cfg_cmd;
621 volatile struct iasetup_cmd_struct *ias_cmd;
622 volatile struct tdr_cmd_struct *tdr_cmd;
623 volatile struct mcsetup_cmd_struct *mc_cmd;
624 struct dev_mc_list *dmi = dev->mc_list;
625 int num_addrs = dev->mc_count;
626
627 ptr = (void *) ((char *) p->scb + sizeof(struct scb_struct));
628
629 cfg_cmd = (struct configure_cmd_struct *) ptr; /* configure-command */
630 cfg_cmd->cmd_status = 0;
631 cfg_cmd->cmd_cmd = CMD_CONFIGURE | CMD_LAST;
632 cfg_cmd->cmd_link = 0xffff;
633
634 cfg_cmd->byte_cnt = 0x0a; /* number of cfg bytes */
635 cfg_cmd->fifo = 0x08; /* fifo-limit (8=tx:32/rx:64) */
636 cfg_cmd->sav_bf = 0x40; /* hold or discard bad recv frames (bit 7) */
637 cfg_cmd->adr_len = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
638 cfg_cmd->priority = 0x00;
639 cfg_cmd->ifs = 0x60;
640 cfg_cmd->time_low = 0x00;
641 cfg_cmd->time_high = 0xf2;
642 cfg_cmd->promisc = 0;
643 if (dev->flags & (IFF_ALLMULTI | IFF_PROMISC)) {
644 cfg_cmd->promisc = 1;
645 dev->flags |= IFF_PROMISC;
646 }
647 cfg_cmd->carr_coll = 0x00;
648
649 p->scb->cbl_offset = make16(cfg_cmd);
650
651 p->scb->cmd = CUC_START; /* cmd.-unit start */
652 elmc_id_attn586();
653
654 s = jiffies; /* warning: only active with interrupts on !! */
655 while (!(cfg_cmd->cmd_status & STAT_COMPL)) {
ff5688ae 656 if (time_after(jiffies, s + 30*HZ/100))
1da177e4
LT		 657 break;
658 }
659
660 if ((cfg_cmd->cmd_status & (STAT_OK | STAT_COMPL)) != (STAT_COMPL | STAT_OK)) {
661 printk(KERN_WARNING "%s (elmc): configure command failed: %x\n", dev->name, cfg_cmd->cmd_status);
662 return 1;
663 }
664 /*
665 * individual address setup
666 */
667 ias_cmd = (struct iasetup_cmd_struct *) ptr;
668
669 ias_cmd->cmd_status = 0;
670 ias_cmd->cmd_cmd = CMD_IASETUP | CMD_LAST;
671 ias_cmd->cmd_link = 0xffff;
672
673 memcpy((char *) &ias_cmd->iaddr, (char *) dev->dev_addr, ETH_ALEN);
674
675 p->scb->cbl_offset = make16(ias_cmd);
676
677 p->scb->cmd = CUC_START; /* cmd.-unit start */
678 elmc_id_attn586();
679
680 s = jiffies;
681 while (!(ias_cmd->cmd_status & STAT_COMPL)) {
ff5688ae 682 if (time_after(jiffies, s + 30*HZ/100))
1da177e4
LT		 683 break;
684 }
685
686 if ((ias_cmd->cmd_status & (STAT_OK | STAT_COMPL)) != (STAT_OK | STAT_COMPL)) {
687 printk(KERN_WARNING "%s (elmc): individual address setup command failed: %04x\n", dev->name, ias_cmd->cmd_status);
688 return 1;
689 }
690 /*
691 * TDR, wire check .. e.g. no resistor e.t.c
692 */
693 tdr_cmd = (struct tdr_cmd_struct *) ptr;
694
695 tdr_cmd->cmd_status = 0;
696 tdr_cmd->cmd_cmd = CMD_TDR | CMD_LAST;
697 tdr_cmd->cmd_link = 0xffff;
698 tdr_cmd->status = 0;
699
700 p->scb->cbl_offset = make16(tdr_cmd);
701
702 p->scb->cmd = CUC_START; /* cmd.-unit start */
703 elmc_attn586();
704
705 s = jiffies;
706 while (!(tdr_cmd->cmd_status & STAT_COMPL)) {
ff5688ae 707 if (time_after(jiffies, s + 30*HZ/100)) {
1da177e4
LT		 708 printk(KERN_WARNING "%s: %d Problems while running the TDR.\n", dev->name, __LINE__);
709 result = 1;
710 break;
711 }
712 }
713
714 if (!result) {
715 DELAY(2); /* wait for result */
716 result = tdr_cmd->status;
717
718 p->scb->cmd = p->scb->status & STAT_MASK;
719 elmc_id_attn586(); /* ack the interrupts */
720
721 if (result & TDR_LNK_OK) {
722 /* empty */
723 } else if (result & TDR_XCVR_PRB) {
724 printk(KERN_WARNING "%s: TDR: Transceiver problem!\n", dev->name);
725 } else if (result & TDR_ET_OPN) {
726 printk(KERN_WARNING "%s: TDR: No correct termination %d clocks away.\n", dev->name, result & TDR_TIMEMASK);
727 } else if (result & TDR_ET_SRT) {
728 if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
729 printk(KERN_WARNING "%s: TDR: Detected a short circuit %d clocks away.\n", dev->name, result & TDR_TIMEMASK);
730 } else {
731 printk(KERN_WARNING "%s: TDR: Unknown status %04x\n", dev->name, result);
732 }
733 }
734 /*
735 * ack interrupts
736 */
737 p->scb->cmd = p->scb->status & STAT_MASK;
738 elmc_id_attn586();
739
740 /*
741 * alloc nop/xmit-cmds
742 */
743#if (NUM_XMIT_BUFFS == 1)
744 for (i = 0; i < 2; i++) {
745 p->nop_cmds[i] = (struct nop_cmd_struct *) ptr;
746 p->nop_cmds[i]->cmd_cmd = CMD_NOP;
747 p->nop_cmds[i]->cmd_status = 0;
748 p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
749 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
750 }
751 p->xmit_cmds[0] = (struct transmit_cmd_struct *) ptr; /* transmit cmd/buff 0 */
752 ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
753#else
754 for (i = 0; i < NUM_XMIT_BUFFS; i++) {
755 p->nop_cmds[i] = (struct nop_cmd_struct *) ptr;
756 p->nop_cmds[i]->cmd_cmd = CMD_NOP;
757 p->nop_cmds[i]->cmd_status = 0;
758 p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
759 ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
760 p->xmit_cmds[i] = (struct transmit_cmd_struct *) ptr; /*transmit cmd/buff 0 */
761 ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
762 }
763#endif
764
765 ptr = alloc_rfa(dev, (void *) ptr); /* init receive-frame-area */
766
767 /*
768 * Multicast setup
769 */
770
771 if (dev->mc_count) {
772 /* I don't understand this: do we really need memory after the init? */
773 int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
774 if (len <= 0) {
775 printk(KERN_ERR "%s: Ooooops, no memory for MC-Setup!\n", dev->name);
776 } else {
777 if (len < num_addrs) {
778 num_addrs = len;
779 printk(KERN_WARNING "%s: Sorry, can only apply %d MC-Address(es).\n",
780 dev->name, num_addrs);
781 }
782 mc_cmd = (struct mcsetup_cmd_struct *) ptr;
783 mc_cmd->cmd_status = 0;
784 mc_cmd->cmd_cmd = CMD_MCSETUP | CMD_LAST;
785 mc_cmd->cmd_link = 0xffff;
786 mc_cmd->mc_cnt = num_addrs * 6;
787 for (i = 0; i < num_addrs; i++) {
788 memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr, 6);
789 dmi = dmi->next;
790 }
791 p->scb->cbl_offset = make16(mc_cmd);
792 p->scb->cmd = CUC_START;
793 elmc_id_attn586();
794 s = jiffies;
795 while (!(mc_cmd->cmd_status & STAT_COMPL)) {
ff5688ae 796 if (time_after(jiffies, s + 30*HZ/100))
1da177e4
LT		 797 break;
798 }
799 if (!(mc_cmd->cmd_status & STAT_COMPL)) {
800 printk(KERN_WARNING "%s: Can't apply multicast-address-list.\n", dev->name);
801 }
802 }
803 }
804 /*
805 * alloc xmit-buffs / init xmit_cmds
806 */
807 for (i = 0; i < NUM_XMIT_BUFFS; i++) {
808 p->xmit_cbuffs[i] = (char *) ptr; /* char-buffs */
809 ptr = (char *) ptr + XMIT_BUFF_SIZE;
810 p->xmit_buffs[i] = (struct tbd_struct *) ptr; /* TBD */
811 ptr = (char *) ptr + sizeof(struct tbd_struct);
812 if ((void *) ptr > (void *) p->iscp) {
813 printk(KERN_ERR "%s: not enough shared-mem for your configuration!\n", dev->name);
814 return 1;
815 }
816 memset((char *) (p->xmit_cmds[i]), 0, sizeof(struct transmit_cmd_struct));
817 memset((char *) (p->xmit_buffs[i]), 0, sizeof(struct tbd_struct));
818 p->xmit_cmds[i]->cmd_status = STAT_COMPL;
819 p->xmit_cmds[i]->cmd_cmd = CMD_XMIT | CMD_INT;
820 p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
821 p->xmit_buffs[i]->next = 0xffff;
822 p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
823 }
824
825 p->xmit_count = 0;
826 p->xmit_last = 0;
827#ifndef NO_NOPCOMMANDS
828 p->nop_point = 0;
829#endif
830
831 /*
832 * 'start transmitter' (nop-loop)
833 */
834#ifndef NO_NOPCOMMANDS
835 p->scb->cbl_offset = make16(p->nop_cmds[0]);
836 p->scb->cmd = CUC_START;
837 elmc_id_attn586();
838 WAIT_4_SCB_CMD();
839#else
840 p->xmit_cmds[0]->cmd_link = 0xffff;
841 p->xmit_cmds[0]->cmd_cmd = CMD_XMIT | CMD_LAST | CMD_INT;
842#endif
843
844 return 0;
845}
846
847/******************************************************
848 * This is a helper routine for elmc_rnr_int() and init586().
849 * It sets up the Receive Frame Area (RFA).
850 */
851
852static void *alloc_rfa(struct net_device *dev, void *ptr)
853{
854 volatile struct rfd_struct *rfd = (struct rfd_struct *) ptr;
855 volatile struct rbd_struct *rbd;
856 int i;
857 struct priv *p = (struct priv *) dev->priv;
858
859 memset((char *) rfd, 0, sizeof(struct rfd_struct) * p->num_recv_buffs);
860 p->rfd_first = rfd;
861
862 for (i = 0; i < p->num_recv_buffs; i++) {
863 rfd[i].next = make16(rfd + (i + 1) % p->num_recv_buffs);
864 }
865 rfd[p->num_recv_buffs - 1].last = RFD_SUSP; /* RU suspend */
866
867 ptr = (void *) (rfd + p->num_recv_buffs);
868
869 rbd = (struct rbd_struct *) ptr;
870 ptr = (void *) (rbd + p->num_recv_buffs);
871
872 /* clr descriptors */
873 memset((char *) rbd, 0, sizeof(struct rbd_struct) * p->num_recv_buffs);
874
875 for (i = 0; i < p->num_recv_buffs; i++) {
876 rbd[i].next = make16((rbd + (i + 1) % p->num_recv_buffs));
877 rbd[i].size = RECV_BUFF_SIZE;
878 rbd[i].buffer = make24(ptr);
879 ptr = (char *) ptr + RECV_BUFF_SIZE;
880 }
881
882 p->rfd_top = p->rfd_first;
883 p->rfd_last = p->rfd_first + p->num_recv_buffs - 1;
884
885 p->scb->rfa_offset = make16(p->rfd_first);
886 p->rfd_first->rbd_offset = make16(rbd);
887
888 return ptr;
889}
890
891
892/**************************************************
893 * Interrupt Handler ...
894 */
895
896static irqreturn_t
7d12e780 897elmc_interrupt(int irq, void *dev_id)
1da177e4 898{
c31f28e7 899 struct net_device *dev = dev_id;
1da177e4
LT		 900 unsigned short stat;
901 struct priv *p;
902
c31f28e7 903 if (!netif_running(dev)) {
1da177e4
LT		 904 /* The 3c523 has this habit of generating interrupts during the
905 reset. I'm not sure if the ni52 has this same problem, but it's
906 really annoying if we haven't finished initializing it. I was
907 hoping all the elmc_id_* commands would disable this, but I
908 might have missed a few. */
909
910 elmc_id_attn586(); /* ack inter. and disable any more */
911 return IRQ_HANDLED;
912 } else if (!(ELMC_CTRL_INT & inb(dev->base_addr + ELMC_CTRL))) {
913 /* wasn't this device */
914 return IRQ_NONE;
915 }
916 /* reading ELMC_CTRL also clears the INT bit. */
917
918 p = (struct priv *) dev->priv;
919
6aa20a22 920 while ((stat = p->scb->status & STAT_MASK))
1da177e4
LT		 921 {
922 p->scb->cmd = stat;
923 elmc_attn586(); /* ack inter. */
924
925 if (stat & STAT_CX) {
926 /* command with I-bit set complete */
927 elmc_xmt_int(dev);
928 }
929 if (stat & STAT_FR) {
930 /* received a frame */
931 elmc_rcv_int(dev);
932 }
933#ifndef NO_NOPCOMMANDS
934 if (stat & STAT_CNA) {
935 /* CU went 'not ready' */
936 if (netif_running(dev)) {
937 printk(KERN_WARNING "%s: oops! CU has left active state. stat: %04x/%04x.\n", dev->name, (int) stat, (int) p->scb->status);
938 }
939 }
940#endif
941
942 if (stat & STAT_RNR) {
943 /* RU went 'not ready' */
944
945 if (p->scb->status & RU_SUSPEND) {
946 /* special case: RU_SUSPEND */
947
948 WAIT_4_SCB_CMD();
949 p->scb->cmd = RUC_RESUME;
950 elmc_attn586();
951 } else {
952 printk(KERN_WARNING "%s: Receiver-Unit went 'NOT READY': %04x/%04x.\n", dev->name, (int) stat, (int) p->scb->status);
953 elmc_rnr_int(dev);
954 }
955 }
956 WAIT_4_SCB_CMD(); /* wait for ack. (elmc_xmt_int can be faster than ack!!) */
957 if (p->scb->cmd) { /* timed out? */
958 break;
959 }
960 }
961 return IRQ_HANDLED;
962}
963
964/*******************************************************
965 * receive-interrupt
966 */
967
968static void elmc_rcv_int(struct net_device *dev)
969{
970 int status;
971 unsigned short totlen;
972 struct sk_buff *skb;
973 struct rbd_struct *rbd;
974 struct priv *p = (struct priv *) dev->priv;
975
976 for (; (status = p->rfd_top->status) & STAT_COMPL;) {
977 rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
978
979 if (status & STAT_OK) { /* frame received without error? */
980 if ((totlen = rbd->status) & RBD_LAST) { /* the first and the last buffer? */
981 totlen &= RBD_MASK; /* length of this frame */
982 rbd->status = 0;
983 skb = (struct sk_buff *) dev_alloc_skb(totlen + 2);
984 if (skb != NULL) {
1da177e4
LT		 985 skb_reserve(skb, 2); /* 16 byte alignment */
986 skb_put(skb,totlen);
8c7b7faa 987 skb_copy_to_linear_data(skb, (char *) p->base+(unsigned long) rbd->buffer,totlen);
1da177e4
LT		 988 skb->protocol = eth_type_trans(skb, dev);
989 netif_rx(skb);
990 dev->last_rx = jiffies;
aa50911a
PZ		 991 dev->stats.rx_packets++;
992 dev->stats.rx_bytes += totlen;
1da177e4 993 } else {
aa50911a 994 dev->stats.rx_dropped++;
1da177e4
LT		 995 }
996 } else {
997 printk(KERN_WARNING "%s: received oversized frame.\n", dev->name);
aa50911a 998 dev->stats.rx_dropped++;
1da177e4
LT		 999 }
1000 } else { /* frame !(ok), only with 'save-bad-frames' */
1001 printk(KERN_WARNING "%s: oops! rfd-error-status: %04x\n", dev->name, status);
aa50911a 1002 dev->stats.rx_errors++;
1da177e4
LT		 1003 }
1004 p->rfd_top->status = 0;
1005 p->rfd_top->last = RFD_SUSP;
1006 p->rfd_last->last = 0; /* delete RU_SUSP */
1007 p->rfd_last = p->rfd_top;
1008 p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
1009 }
1010}
1011
1012/**********************************************************
1013 * handle 'Receiver went not ready'.
1014 */
1015
1016static void elmc_rnr_int(struct net_device *dev)
1017{
1018 struct priv *p = (struct priv *) dev->priv;
1019
aa50911a 1020 dev->stats.rx_errors++;
1da177e4
LT		 1021
1022 WAIT_4_SCB_CMD(); /* wait for the last cmd */
1023 p->scb->cmd = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
1024 elmc_attn586();
1025 WAIT_4_SCB_CMD(); /* wait for accept cmd. */
1026
1027 alloc_rfa(dev, (char *) p->rfd_first);
1028 startrecv586(dev); /* restart RU */
1029
1030 printk(KERN_WARNING "%s: Receive-Unit restarted. Status: %04x\n", dev->name, p->scb->status);
1031
1032}
1033
1034/**********************************************************
1035 * handle xmit - interrupt
1036 */
1037
1038static void elmc_xmt_int(struct net_device *dev)
1039{
1040 int status;
1041 struct priv *p = (struct priv *) dev->priv;
1042
1043 status = p->xmit_cmds[p->xmit_last]->cmd_status;
1044 if (!(status & STAT_COMPL)) {
1045 printk(KERN_WARNING "%s: strange .. xmit-int without a 'COMPLETE'\n", dev->name);
1046 }
1047 if (status & STAT_OK) {
aa50911a
PZ		 1048 dev->stats.tx_packets++;
1049 dev->stats.collisions += (status & TCMD_MAXCOLLMASK);
1da177e4 1050 } else {
aa50911a 1051 dev->stats.tx_errors++;
1da177e4
LT		 1052 if (status & TCMD_LATECOLL) {
1053 printk(KERN_WARNING "%s: late collision detected.\n", dev->name);
aa50911a 1054 dev->stats.collisions++;
1da177e4 1055 } else if (status & TCMD_NOCARRIER) {
aa50911a 1056 dev->stats.tx_carrier_errors++;
1da177e4
LT		 1057 printk(KERN_WARNING "%s: no carrier detected.\n", dev->name);
1058 } else if (status & TCMD_LOSTCTS) {
1059 printk(KERN_WARNING "%s: loss of CTS detected.\n", dev->name);
1060 } else if (status & TCMD_UNDERRUN) {
aa50911a 1061 dev->stats.tx_fifo_errors++;
1da177e4
LT		 1062 printk(KERN_WARNING "%s: DMA underrun detected.\n", dev->name);
1063 } else if (status & TCMD_MAXCOLL) {
1064 printk(KERN_WARNING "%s: Max. collisions exceeded.\n", dev->name);
aa50911a 1065 dev->stats.collisions += 16;
1da177e4
LT		 1066 }
1067 }
1068
1069#if (NUM_XMIT_BUFFS != 1)
1070 if ((++p->xmit_last) == NUM_XMIT_BUFFS) {
1071 p->xmit_last = 0;
1072 }
1073#endif
1074
1075 netif_wake_queue(dev);
1076}
1077
1078/***********************************************************
1079 * (re)start the receiver
1080 */
1081
1082static void startrecv586(struct net_device *dev)
1083{
1084 struct priv *p = (struct priv *) dev->priv;
1085
1086 p->scb->rfa_offset = make16(p->rfd_first);
1087 p->scb->cmd = RUC_START;
1088 elmc_attn586(); /* start cmd. */
1089 WAIT_4_SCB_CMD(); /* wait for accept cmd. (no timeout!!) */
1090}
1091
1092/******************************************************
1093 * timeout
1094 */
6aa20a22 1095
1da177e4
LT		 1096static void elmc_timeout(struct net_device *dev)
1097{
1098 struct priv *p = (struct priv *) dev->priv;
1099 /* COMMAND-UNIT active? */
1100 if (p->scb->status & CU_ACTIVE) {
1101#ifdef DEBUG
1102 printk("%s: strange ... timeout with CU active?!?\n", dev->name);
1103 printk("%s: X0: %04x N0: %04x N1: %04x %d\n", dev->name, (int) p->xmit_cmds[0]->cmd_status, (int) p->nop_cmds[0]->cmd_status, (int) p->nop_cmds[1]->cmd_status, (int) p->nop_point);
1104#endif
1105 p->scb->cmd = CUC_ABORT;
1106 elmc_attn586();
1107 WAIT_4_SCB_CMD();
1108 p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
1109 p->scb->cmd = CUC_START;
1110 elmc_attn586();
1111 WAIT_4_SCB_CMD();
1112 netif_wake_queue(dev);
1113 } else {
1114#ifdef DEBUG
1115 printk("%s: xmitter timed out, try to restart! stat: %04x\n", dev->name, p->scb->status);
1116 printk("%s: command-stats: %04x %04x\n", dev->name, p->xmit_cmds[0]->cmd_status, p->xmit_cmds[1]->cmd_status);
1117#endif
1118 elmc_close(dev);
1119 elmc_open(dev);
1120 }
1121}
6aa20a22 1122
1da177e4
LT		 1123/******************************************************
1124 * send frame
1125 */
1126
1127static int elmc_send_packet(struct sk_buff *skb, struct net_device *dev)
1128{
1129 int len;
1130 int i;
1131#ifndef NO_NOPCOMMANDS
1132 int next_nop;
1133#endif
1134 struct priv *p = (struct priv *) dev->priv;
1135
1136 netif_stop_queue(dev);
1137
1138 len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
6aa20a22 1139
1da177e4
LT		 1140 if (len != skb->len)
1141 memset((char *) p->xmit_cbuffs[p->xmit_count], 0, ETH_ZLEN);
3dbad80a 1142 skb_copy_from_linear_data(skb, (char *) p->xmit_cbuffs[p->xmit_count], skb->len);
1da177e4
LT		 1143
1144#if (NUM_XMIT_BUFFS == 1)
1145#ifdef NO_NOPCOMMANDS
1146 p->xmit_buffs[0]->size = TBD_LAST | len;
1147 for (i = 0; i < 16; i++) {
1148 p->scb->cbl_offset = make16(p->xmit_cmds[0]);
1149 p->scb->cmd = CUC_START;
1150 p->xmit_cmds[0]->cmd_status = 0;
1151 elmc_attn586();
1152 dev->trans_start = jiffies;
1153 if (!i) {
1154 dev_kfree_skb(skb);
1155 }
1156 WAIT_4_SCB_CMD();
1157 if ((p->scb->status & CU_ACTIVE)) { /* test it, because CU sometimes doesn't start immediately */
1158 break;
1159 }
1160 if (p->xmit_cmds[0]->cmd_status) {
1161 break;
1162 }
1163 if (i == 15) {
1164 printk(KERN_WARNING "%s: Can't start transmit-command.\n", dev->name);
1165 }
1166 }
1167#else
1168 next_nop = (p->nop_point + 1) & 0x1;
1169 p->xmit_buffs[0]->size = TBD_LAST | len;
6aa20a22 1170
1da177e4
LT		 1171 p->xmit_cmds[0]->cmd_link = p->nop_cmds[next_nop]->cmd_link
1172 = make16((p->nop_cmds[next_nop]));
1173 p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
1174
1175 p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
1176 dev->trans_start = jiffies;
1177 p->nop_point = next_nop;
1178 dev_kfree_skb(skb);
1179#endif
1180#else
1181 p->xmit_buffs[p->xmit_count]->size = TBD_LAST | len;
1182 if ((next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS) {
1183 next_nop = 0;
1184 }
1185 p->xmit_cmds[p->xmit_count]->cmd_status = 0;
1186 p->xmit_cmds[p->xmit_count]->cmd_link = p->nop_cmds[next_nop]->cmd_link
1187 = make16((p->nop_cmds[next_nop]));
1188 p->nop_cmds[next_nop]->cmd_status = 0;
1189 p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
1190 dev->trans_start = jiffies;
1191 p->xmit_count = next_nop;
1192 if (p->xmit_count != p->xmit_last)
1193 netif_wake_queue(dev);
1194 dev_kfree_skb(skb);
1195#endif
1196 return 0;
1197}
1198
1199/*******************************************
1200 * Someone wanna have the statistics
1201 */
1202
1203static struct net_device_stats *elmc_get_stats(struct net_device *dev)
1204{
1205 struct priv *p = (struct priv *) dev->priv;
1206 unsigned short crc, aln, rsc, ovrn;
1207
1208 crc = p->scb->crc_errs; /* get error-statistic from the ni82586 */
1209 p->scb->crc_errs -= crc;
1210 aln = p->scb->aln_errs;
1211 p->scb->aln_errs -= aln;
1212 rsc = p->scb->rsc_errs;
1213 p->scb->rsc_errs -= rsc;
1214 ovrn = p->scb->ovrn_errs;
1215 p->scb->ovrn_errs -= ovrn;
1216
aa50911a
PZ		 1217 dev->stats.rx_crc_errors += crc;
1218 dev->stats.rx_fifo_errors += ovrn;
1219 dev->stats.rx_frame_errors += aln;
1220 dev->stats.rx_dropped += rsc;
1da177e4 1221
aa50911a 1222 return &dev->stats;
1da177e4
LT		 1223}
1224
1225/********************************************************
1226 * Set MC list ..
1227 */
1228
1229#ifdef ELMC_MULTICAST
1230static void set_multicast_list(struct net_device *dev)
1231{
1232 if (!dev->start) {
1233 /* without a running interface, promiscuous doesn't work */
1234 return;
1235 }
1236 dev->start = 0;
1237 alloc586(dev);
1238 init586(dev);
1239 startrecv586(dev);
1240 dev->start = 1;
1241}
1242#endif
1243
1244static void netdev_get_drvinfo(struct net_device *dev,
1245 struct ethtool_drvinfo *info)
1246{
1247 strcpy(info->driver, DRV_NAME);
1248 strcpy(info->version, DRV_VERSION);
1249 sprintf(info->bus_info, "MCA 0x%lx", dev->base_addr);
1250}
1251
7282d491 1252static const struct ethtool_ops netdev_ethtool_ops = {
1da177e4
LT		 1253 .get_drvinfo = netdev_get_drvinfo,
1254};
1255
1256#ifdef MODULE
1257
1258/* Increase if needed ;) */
1259#define MAX_3C523_CARDS 4
1260
1261static struct net_device *dev_elmc[MAX_3C523_CARDS];
1262static int irq[MAX_3C523_CARDS];
1263static int io[MAX_3C523_CARDS];
1264module_param_array(irq, int, NULL, 0);
1265module_param_array(io, int, NULL, 0);
1266MODULE_PARM_DESC(io, "EtherLink/MC I/O base address(es)");
1267MODULE_PARM_DESC(irq, "EtherLink/MC IRQ number(s)");
7b24017e 1268MODULE_LICENSE("GPL");
1da177e4 1269
96e672c7 1270int __init init_module(void)
1da177e4
LT		 1271{
1272 int this_dev,found = 0;
1273
6aa20a22 1274 /* Loop until we either can't find any more cards, or we have MAX_3C523_CARDS */
1da177e4
LT		 1275 for(this_dev=0; this_dev<MAX_3C523_CARDS; this_dev++) {
1276 struct net_device *dev = alloc_etherdev(sizeof(struct priv));
1277 if (!dev)
1278 break;
1279 dev->irq=irq[this_dev];
1280 dev->base_addr=io[this_dev];
1281 if (do_elmc_probe(dev) == 0) {
b1fc5505 1282 dev_elmc[this_dev] = dev;
1283 found++;
1284 continue;
1da177e4
LT		 1285 }
1286 free_netdev(dev);
1287 if (io[this_dev]==0)
1288 break;
1289 printk(KERN_WARNING "3c523.c: No 3c523 card found at io=%#x\n",io[this_dev]);
1290 }
1291
1292 if(found==0) {
1293 if(io[0]==0) printk(KERN_NOTICE "3c523.c: No 3c523 cards found\n");
1294 return -ENXIO;
1295 } else return 0;
1296}
1297
afc8eb46 1298void __exit cleanup_module(void)
1da177e4
LT		 1299{
1300 int this_dev;
1301 for (this_dev=0; this_dev<MAX_3C523_CARDS; this_dev++) {
1302 struct net_device *dev = dev_elmc[this_dev];
1303 if (dev) {
1304 unregister_netdev(dev);
1305 cleanup_card(dev);
1306 free_netdev(dev);
1307 }
1308 }
1309}
1310
1311#endif /* MODULE */
Linux kernel - Deliverables
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