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[PATCH] pcmcia: embed dev_link_t into struct pcmcia_device
[deliverable/linux.git] / drivers / net / pcmcia / 3c589_cs.c
CommitLineData
1da177e4
LT		 1/*======================================================================
2
3 A PCMCIA ethernet driver for the 3com 3c589 card.
4
5 Copyright (C) 1999 David A. Hinds -- dahinds@users.sourceforge.net
6
7 3c589_cs.c 1.162 2001/10/13 00:08:50
8
9 The network driver code is based on Donald Becker's 3c589 code:
10
11 Written 1994 by Donald Becker.
12 Copyright 1993 United States Government as represented by the
13 Director, National Security Agency. This software may be used and
14 distributed according to the terms of the GNU General Public License,
15 incorporated herein by reference.
16 Donald Becker may be reached at becker@scyld.com
17
18 Updated for 2.5.x by Alan Cox <alan@redhat.com>
19
20======================================================================*/
21
22#define DRV_NAME "3c589_cs"
23#define DRV_VERSION "1.162-ac"
24
25#include <linux/module.h>
26#include <linux/init.h>
27#include <linux/kernel.h>
28#include <linux/ptrace.h>
29#include <linux/slab.h>
30#include <linux/string.h>
31#include <linux/timer.h>
32#include <linux/interrupt.h>
33#include <linux/in.h>
34#include <linux/delay.h>
35#include <linux/ethtool.h>
36#include <linux/netdevice.h>
37#include <linux/etherdevice.h>
38#include <linux/skbuff.h>
39#include <linux/if_arp.h>
40#include <linux/ioport.h>
41#include <linux/bitops.h>
ff5688ae 42#include <linux/jiffies.h>
1da177e4 43
1da177e4
LT		 44#include <pcmcia/cs_types.h>
45#include <pcmcia/cs.h>
46#include <pcmcia/cistpl.h>
47#include <pcmcia/cisreg.h>
48#include <pcmcia/ciscode.h>
49#include <pcmcia/ds.h>
50
51#include <asm/uaccess.h>
52#include <asm/io.h>
53#include <asm/system.h>
54
55/* To minimize the size of the driver source I only define operating
56 constants if they are used several times. You'll need the manual
57 if you want to understand driver details. */
58/* Offsets from base I/O address. */
59#define EL3_DATA 0x00
60#define EL3_TIMER 0x0a
61#define EL3_CMD 0x0e
62#define EL3_STATUS 0x0e
63
64#define EEPROM_READ 0x0080
65#define EEPROM_BUSY 0x8000
66
67#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
68
69/* The top five bits written to EL3_CMD are a command, the lower
70 11 bits are the parameter, if applicable. */
71enum c509cmd {
72 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
73 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
74 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
75 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
76 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
77 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
78 StatsDisable = 22<<11, StopCoax = 23<<11,
79};
80
81enum c509status {
82 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
83 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
84 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000
85};
86
87/* The SetRxFilter command accepts the following classes: */
88enum RxFilter {
89 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8
90};
91
92/* Register window 1 offsets, the window used in normal operation. */
93#define TX_FIFO 0x00
94#define RX_FIFO 0x00
95#define RX_STATUS 0x08
96#define TX_STATUS 0x0B
97#define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
98
99#define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
100#define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
101#define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
102#define MEDIA_LED 0x0001 /* Enable link light on 3C589E cards. */
103
104/* Time in jiffies before concluding Tx hung */
105#define TX_TIMEOUT ((400*HZ)/1000)
106
107struct el3_private {
fd238232 108 struct pcmcia_device *p_dev;
1da177e4
LT		 109 dev_node_t node;
110 struct net_device_stats stats;
111 /* For transceiver monitoring */
112 struct timer_list media;
113 u16 media_status;
114 u16 fast_poll;
115 unsigned long last_irq;
116 spinlock_t lock;
117};
118
f71e1309 119static const char *if_names[] = { "auto", "10baseT", "10base2", "AUI" };
1da177e4
LT		 120
121/*====================================================================*/
122
123/* Module parameters */
124
125MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
126MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver");
127MODULE_LICENSE("GPL");
128
129#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
130
131/* Special hook for setting if_port when module is loaded */
132INT_MODULE_PARM(if_port, 0);
133
134#ifdef PCMCIA_DEBUG
135INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
136#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
137static char *version =
138DRV_NAME ".c " DRV_VERSION " 2001/10/13 00:08:50 (David Hinds)";
139#else
140#define DEBUG(n, args...)
141#endif
142
143/*====================================================================*/
144
145static void tc589_config(dev_link_t *link);
146static void tc589_release(dev_link_t *link);
1da177e4
LT		 147
148static u16 read_eeprom(kio_addr_t ioaddr, int index);
149static void tc589_reset(struct net_device *dev);
150static void media_check(unsigned long arg);
151static int el3_config(struct net_device *dev, struct ifmap *map);
152static int el3_open(struct net_device *dev);
153static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
154static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs);
155static void update_stats(struct net_device *dev);
156static struct net_device_stats *el3_get_stats(struct net_device *dev);
157static int el3_rx(struct net_device *dev);
158static int el3_close(struct net_device *dev);
159static void el3_tx_timeout(struct net_device *dev);
160static void set_multicast_list(struct net_device *dev);
161static struct ethtool_ops netdev_ethtool_ops;
162
cc3b4866 163static void tc589_detach(struct pcmcia_device *p_dev);
1da177e4 164
1da177e4
LT		 165/*======================================================================
166
167 tc589_attach() creates an "instance" of the driver, allocating
168 local data structures for one device. The device is registered
169 with Card Services.
170
171======================================================================*/
172
f8cfa618 173static int tc589_attach(struct pcmcia_device *p_dev)
1da177e4
LT		 174{
175 struct el3_private *lp;
1da177e4 176 struct net_device *dev;
fd238232 177 dev_link_t *link = dev_to_instance(p_dev);
1da177e4
LT		 178
179 DEBUG(0, "3c589_attach()\n");
f8cfa618 180
1da177e4
LT		 181 /* Create new ethernet device */
182 dev = alloc_etherdev(sizeof(struct el3_private));
183 if (!dev)
f8cfa618 184 return -ENOMEM;
1da177e4 185 lp = netdev_priv(dev);
1da177e4 186 link->priv = dev;
fd238232 187 lp->p_dev = p_dev;
1da177e4
LT		 188
189 spin_lock_init(&lp->lock);
190 link->io.NumPorts1 = 16;
191 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
192 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
193 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
194 link->irq.Handler = &el3_interrupt;
195 link->irq.Instance = dev;
196 link->conf.Attributes = CONF_ENABLE_IRQ;
1da177e4
LT		 197 link->conf.IntType = INT_MEMORY_AND_IO;
198 link->conf.ConfigIndex = 1;
199 link->conf.Present = PRESENT_OPTION;
f8cfa618 200
1da177e4
LT		 201 /* The EL3-specific entries in the device structure. */
202 SET_MODULE_OWNER(dev);
203 dev->hard_start_xmit = &el3_start_xmit;
204 dev->set_config = &el3_config;
205 dev->get_stats = &el3_get_stats;
206 dev->set_multicast_list = &set_multicast_list;
207 dev->open = &el3_open;
208 dev->stop = &el3_close;
209#ifdef HAVE_TX_TIMEOUT
210 dev->tx_timeout = el3_tx_timeout;
211 dev->watchdog_timeo = TX_TIMEOUT;
212#endif
213 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
214
f8cfa618
DB		 215 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
216 tc589_config(link);
217
218 return 0;
1da177e4
LT		 219} /* tc589_attach */
220
221/*======================================================================
222
223 This deletes a driver "instance". The device is de-registered
224 with Card Services. If it has been released, all local data
225 structures are freed. Otherwise, the structures will be freed
226 when the device is released.
227
228======================================================================*/
229
cc3b4866 230static void tc589_detach(struct pcmcia_device *p_dev)
1da177e4 231{
cc3b4866 232 dev_link_t *link = dev_to_instance(p_dev);
1da177e4 233 struct net_device *dev = link->priv;
b4635811 234
1da177e4 235 DEBUG(0, "3c589_detach(0x%p)\n", link);
1da177e4 236
fd238232 237 if (link->dev_node)
1da177e4
LT		 238 unregister_netdev(dev);
239
240 if (link->state & DEV_CONFIG)
241 tc589_release(link);
cc3b4866 242
1da177e4
LT		 243 free_netdev(dev);
244} /* tc589_detach */
245
246/*======================================================================
247
248 tc589_config() is scheduled to run after a CARD_INSERTION event
249 is received, to configure the PCMCIA socket, and to make the
250 ethernet device available to the system.
251
252======================================================================*/
253
254#define CS_CHECK(fn, ret) \
255do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
256
257static void tc589_config(dev_link_t *link)
258{
259 client_handle_t handle = link->handle;
260 struct net_device *dev = link->priv;
261 struct el3_private *lp = netdev_priv(dev);
262 tuple_t tuple;
263 cisparse_t parse;
264 u16 buf[32], *phys_addr;
265 int last_fn, last_ret, i, j, multi = 0, fifo;
266 kio_addr_t ioaddr;
267 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
268
269 DEBUG(0, "3c589_config(0x%p)\n", link);
270
271 phys_addr = (u16 *)dev->dev_addr;
272 tuple.Attributes = 0;
273 tuple.DesiredTuple = CISTPL_CONFIG;
274 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
275 tuple.TupleData = (cisdata_t *)buf;
276 tuple.TupleDataMax = sizeof(buf);
277 tuple.TupleOffset = 0;
278 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
279 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
280 link->conf.ConfigBase = parse.config.base;
281 link->conf.Present = parse.config.rmask[0];
282
283 /* Is this a 3c562? */
284 tuple.DesiredTuple = CISTPL_MANFID;
285 tuple.Attributes = TUPLE_RETURN_COMMON;
286 if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) &&
287 (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS)) {
288 if (le16_to_cpu(buf[0]) != MANFID_3COM)
289 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
290 "3Com card??\n");
291 multi = (le16_to_cpu(buf[1]) == PRODID_3COM_3C562);
292 }
293
294 /* Configure card */
295 link->state |= DEV_CONFIG;
296
297 /* For the 3c562, the base address must be xx00-xx7f */
298 link->io.IOAddrLines = 16;
299 for (i = j = 0; j < 0x400; j += 0x10) {
300 if (multi && (j & 0x80)) continue;
301 link->io.BasePort1 = j ^ 0x300;
302 i = pcmcia_request_io(link->handle, &link->io);
303 if (i == CS_SUCCESS) break;
304 }
305 if (i != CS_SUCCESS) {
306 cs_error(link->handle, RequestIO, i);
307 goto failed;
308 }
309 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
310 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
311
312 dev->irq = link->irq.AssignedIRQ;
313 dev->base_addr = link->io.BasePort1;
314 ioaddr = dev->base_addr;
315 EL3WINDOW(0);
316
317 /* The 3c589 has an extra EEPROM for configuration info, including
318 the hardware address. The 3c562 puts the address in the CIS. */
319 tuple.DesiredTuple = 0x88;
320 if (pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) {
321 pcmcia_get_tuple_data(handle, &tuple);
322 for (i = 0; i < 3; i++)
323 phys_addr[i] = htons(buf[i]);
324 } else {
325 for (i = 0; i < 3; i++)
326 phys_addr[i] = htons(read_eeprom(ioaddr, i));
327 if (phys_addr[0] == 0x6060) {
328 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
329 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
330 goto failed;
331 }
332 }
333
334 /* The address and resource configuration register aren't loaded from
335 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
336 outw(0x3f00, ioaddr + 8);
337 fifo = inl(ioaddr);
338
339 /* The if_port symbol can be set when the module is loaded */
340 if ((if_port >= 0) && (if_port <= 3))
341 dev->if_port = if_port;
342 else
343 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
344
fd238232 345 link->dev_node = &lp->node;
1da177e4
LT		 346 link->state &= ~DEV_CONFIG_PENDING;
347 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
348
349 if (register_netdev(dev) != 0) {
350 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
fd238232 351 link->dev_node = NULL;
1da177e4
LT		 352 goto failed;
353 }
354
355 strcpy(lp->node.dev_name, dev->name);
356
357 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
358 dev->name, (multi ? "562" : "589"), dev->base_addr,
359 dev->irq);
360 for (i = 0; i < 6; i++)
361 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
362 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
363 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
364 if_names[dev->if_port]);
365 return;
366
367cs_failed:
368 cs_error(link->handle, last_fn, last_ret);
369failed:
370 tc589_release(link);
371 return;
372
373} /* tc589_config */
374
375/*======================================================================
376
377 After a card is removed, tc589_release() will unregister the net
378 device, and release the PCMCIA configuration. If the device is
379 still open, this will be postponed until it is closed.
380
381======================================================================*/
382
383static void tc589_release(dev_link_t *link)
384{
5f2a71fc 385 pcmcia_disable_device(link->handle);
1da177e4
LT		 386}
387
98e4c28b
DB		 388static int tc589_suspend(struct pcmcia_device *p_dev)
389{
390 dev_link_t *link = dev_to_instance(p_dev);
391 struct net_device *dev = link->priv;
392
8661bb5b
DB		 393 if ((link->state & DEV_CONFIG) && (link->open))
394 netif_device_detach(dev);
98e4c28b
DB		 395
396 return 0;
397}
398
399static int tc589_resume(struct pcmcia_device *p_dev)
400{
401 dev_link_t *link = dev_to_instance(p_dev);
402 struct net_device *dev = link->priv;
403
8661bb5b
DB		 404 if ((link->state & DEV_CONFIG) && (link->open)) {
405 tc589_reset(dev);
406 netif_device_attach(dev);
98e4c28b
DB		 407 }
408
409 return 0;
410}
411
1da177e4
LT		 412/*====================================================================*/
413
414/*
415 Use this for commands that may take time to finish
416*/
417static void tc589_wait_for_completion(struct net_device *dev, int cmd)
418{
419 int i = 100;
420 outw(cmd, dev->base_addr + EL3_CMD);
421 while (--i > 0)
422 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
423 if (i == 0)
424 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
425 dev->name, cmd);
426}
427
428/*
429 Read a word from the EEPROM using the regular EEPROM access register.
430 Assume that we are in register window zero.
431*/
432static u16 read_eeprom(kio_addr_t ioaddr, int index)
433{
434 int i;
435 outw(EEPROM_READ + index, ioaddr + 10);
436 /* Reading the eeprom takes 162 us */
437 for (i = 1620; i >= 0; i--)
438 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
439 break;
440 return inw(ioaddr + 12);
441}
442
443/*
444 Set transceiver type, perhaps to something other than what the user
445 specified in dev->if_port.
446*/
447static void tc589_set_xcvr(struct net_device *dev, int if_port)
448{
449 struct el3_private *lp = netdev_priv(dev);
450 kio_addr_t ioaddr = dev->base_addr;
451
452 EL3WINDOW(0);
453 switch (if_port) {
454 case 0: case 1: outw(0, ioaddr + 6); break;
455 case 2: outw(3<<14, ioaddr + 6); break;
456 case 3: outw(1<<14, ioaddr + 6); break;
457 }
458 /* On PCMCIA, this just turns on the LED */
459 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
460 /* 10baseT interface, enable link beat and jabber check. */
461 EL3WINDOW(4);
462 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
463 EL3WINDOW(1);
464 if (if_port == 2)
465 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
466 else
467 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
468}
469
470static void dump_status(struct net_device *dev)
471{
472 kio_addr_t ioaddr = dev->base_addr;
473 EL3WINDOW(1);
474 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
475 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
476 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
477 inw(ioaddr+TX_FREE));
478 EL3WINDOW(4);
479 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
480 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
481 inw(ioaddr+0x08), inw(ioaddr+0x0a));
482 EL3WINDOW(1);
483}
484
485/* Reset and restore all of the 3c589 registers. */
486static void tc589_reset(struct net_device *dev)
487{
488 kio_addr_t ioaddr = dev->base_addr;
489 int i;
490
491 EL3WINDOW(0);
492 outw(0x0001, ioaddr + 4); /* Activate board. */
493 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
494
495 /* Set the station address in window 2. */
496 EL3WINDOW(2);
497 for (i = 0; i < 6; i++)
498 outb(dev->dev_addr[i], ioaddr + i);
499
500 tc589_set_xcvr(dev, dev->if_port);
501
502 /* Switch to the stats window, and clear all stats by reading. */
503 outw(StatsDisable, ioaddr + EL3_CMD);
504 EL3WINDOW(6);
505 for (i = 0; i < 9; i++)
506 inb(ioaddr+i);
507 inw(ioaddr + 10);
508 inw(ioaddr + 12);
509
510 /* Switch to register set 1 for normal use. */
511 EL3WINDOW(1);
512
513 /* Accept b-cast and phys addr only. */
514 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
515 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
516 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
517 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
518 /* Allow status bits to be seen. */
519 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
520 /* Ack all pending events, and set active indicator mask. */
521 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
522 ioaddr + EL3_CMD);
523 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
524 | AdapterFailure, ioaddr + EL3_CMD);
525}
526
527static void netdev_get_drvinfo(struct net_device *dev,
528 struct ethtool_drvinfo *info)
529{
530 strcpy(info->driver, DRV_NAME);
531 strcpy(info->version, DRV_VERSION);
532 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
533}
534
535#ifdef PCMCIA_DEBUG
536static u32 netdev_get_msglevel(struct net_device *dev)
537{
538 return pc_debug;
539}
540
541static void netdev_set_msglevel(struct net_device *dev, u32 level)
542{
543 pc_debug = level;
544}
545#endif /* PCMCIA_DEBUG */
546
547static struct ethtool_ops netdev_ethtool_ops = {
548 .get_drvinfo = netdev_get_drvinfo,
549#ifdef PCMCIA_DEBUG
550 .get_msglevel = netdev_get_msglevel,
551 .set_msglevel = netdev_set_msglevel,
552#endif /* PCMCIA_DEBUG */
553};
554
555static int el3_config(struct net_device *dev, struct ifmap *map)
556{
557 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
558 if (map->port <= 3) {
559 dev->if_port = map->port;
560 printk(KERN_INFO "%s: switched to %s port\n",
561 dev->name, if_names[dev->if_port]);
562 tc589_set_xcvr(dev, dev->if_port);
563 } else
564 return -EINVAL;
565 }
566 return 0;
567}
568
569static int el3_open(struct net_device *dev)
570{
571 struct el3_private *lp = netdev_priv(dev);
fd238232 572 dev_link_t *link = lp->p_dev;
1da177e4
LT		 573
574 if (!DEV_OK(link))
575 return -ENODEV;
576
577 link->open++;
578 netif_start_queue(dev);
579
580 tc589_reset(dev);
581 init_timer(&lp->media);
582 lp->media.function = &media_check;
583 lp->media.data = (unsigned long) dev;
584 lp->media.expires = jiffies + HZ;
585 add_timer(&lp->media);
586
587 DEBUG(1, "%s: opened, status %4.4x.\n",
588 dev->name, inw(dev->base_addr + EL3_STATUS));
589
590 return 0;
591}
592
593static void el3_tx_timeout(struct net_device *dev)
594{
595 struct el3_private *lp = netdev_priv(dev);
596 kio_addr_t ioaddr = dev->base_addr;
597
598 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
599 dump_status(dev);
600 lp->stats.tx_errors++;
601 dev->trans_start = jiffies;
602 /* Issue TX_RESET and TX_START commands. */
603 tc589_wait_for_completion(dev, TxReset);
604 outw(TxEnable, ioaddr + EL3_CMD);
605 netif_wake_queue(dev);
606}
607
608static void pop_tx_status(struct net_device *dev)
609{
610 struct el3_private *lp = netdev_priv(dev);
611 kio_addr_t ioaddr = dev->base_addr;
612 int i;
613
614 /* Clear the Tx status stack. */
615 for (i = 32; i > 0; i--) {
616 u_char tx_status = inb(ioaddr + TX_STATUS);
617 if (!(tx_status & 0x84)) break;
618 /* reset transmitter on jabber error or underrun */
619 if (tx_status & 0x30)
620 tc589_wait_for_completion(dev, TxReset);
621 if (tx_status & 0x38) {
622 DEBUG(1, "%s: transmit error: status 0x%02x\n",
623 dev->name, tx_status);
624 outw(TxEnable, ioaddr + EL3_CMD);
625 lp->stats.tx_aborted_errors++;
626 }
627 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
628 }
629}
630
631static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
632{
633 kio_addr_t ioaddr = dev->base_addr;
634 struct el3_private *priv = netdev_priv(dev);
635
636 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
637 "status %4.4x.\n", dev->name, (long)skb->len,
638 inw(ioaddr + EL3_STATUS));
639
640 priv->stats.tx_bytes += skb->len;
641
642 /* Put out the doubleword header... */
643 outw(skb->len, ioaddr + TX_FIFO);
644 outw(0x00, ioaddr + TX_FIFO);
645 /* ... and the packet rounded to a doubleword. */
646 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
647
648 dev->trans_start = jiffies;
649 if (inw(ioaddr + TX_FREE) <= 1536) {
650 netif_stop_queue(dev);
651 /* Interrupt us when the FIFO has room for max-sized packet. */
652 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
653 }
654
655 dev_kfree_skb(skb);
656 pop_tx_status(dev);
657
658 return 0;
659}
660
661/* The EL3 interrupt handler. */
662static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
663{
664 struct net_device *dev = (struct net_device *) dev_id;
665 struct el3_private *lp = netdev_priv(dev);
666 kio_addr_t ioaddr;
667 __u16 status;
668 int i = 0, handled = 1;
669
670 if (!netif_device_present(dev))
671 return IRQ_NONE;
672
673 ioaddr = dev->base_addr;
674
675 DEBUG(3, "%s: interrupt, status %4.4x.\n",
676 dev->name, inw(ioaddr + EL3_STATUS));
677
678 spin_lock(&lp->lock);
679 while ((status = inw(ioaddr + EL3_STATUS)) &
680 (IntLatch | RxComplete | StatsFull)) {
681 if ((status & 0xe000) != 0x2000) {
682 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
683 handled = 0;
684 break;
685 }
686
687 if (status & RxComplete)
688 el3_rx(dev);
689
690 if (status & TxAvailable) {
691 DEBUG(3, " TX room bit was handled.\n");
692 /* There's room in the FIFO for a full-sized packet. */
693 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
694 netif_wake_queue(dev);
695 }
696
697 if (status & TxComplete)
698 pop_tx_status(dev);
699
700 if (status & (AdapterFailure | RxEarly | StatsFull)) {
701 /* Handle all uncommon interrupts. */
702 if (status & StatsFull) /* Empty statistics. */
703 update_stats(dev);
704 if (status & RxEarly) { /* Rx early is unused. */
705 el3_rx(dev);
706 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
707 }
708 if (status & AdapterFailure) {
709 u16 fifo_diag;
710 EL3WINDOW(4);
711 fifo_diag = inw(ioaddr + 4);
712 EL3WINDOW(1);
713 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
714 " register %04x.\n", dev->name, fifo_diag);
715 if (fifo_diag & 0x0400) {
716 /* Tx overrun */
717 tc589_wait_for_completion(dev, TxReset);
718 outw(TxEnable, ioaddr + EL3_CMD);
719 }
720 if (fifo_diag & 0x2000) {
721 /* Rx underrun */
722 tc589_wait_for_completion(dev, RxReset);
723 set_multicast_list(dev);
724 outw(RxEnable, ioaddr + EL3_CMD);
725 }
726 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
727 }
728 }
729
730 if (++i > 10) {
731 printk(KERN_ERR "%s: infinite loop in interrupt, "
732 "status %4.4x.\n", dev->name, status);
733 /* Clear all interrupts */
734 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
735 break;
736 }
737 /* Acknowledge the IRQ. */
738 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
739 }
740
741 lp->last_irq = jiffies;
742 spin_unlock(&lp->lock);
743 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
744 dev->name, inw(ioaddr + EL3_STATUS));
745 return IRQ_RETVAL(handled);
746}
747
748static void media_check(unsigned long arg)
749{
750 struct net_device *dev = (struct net_device *)(arg);
751 struct el3_private *lp = netdev_priv(dev);
752 kio_addr_t ioaddr = dev->base_addr;
753 u16 media, errs;
754 unsigned long flags;
755
756 if (!netif_device_present(dev)) goto reschedule;
757
758 EL3WINDOW(1);
759 /* Check for pending interrupt with expired latency timer: with
760 this, we can limp along even if the interrupt is blocked */
761 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
762 (inb(ioaddr + EL3_TIMER) == 0xff)) {
763 if (!lp->fast_poll)
764 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
765 el3_interrupt(dev->irq, lp, NULL);
766 lp->fast_poll = HZ;
767 }
768 if (lp->fast_poll) {
769 lp->fast_poll--;
770 lp->media.expires = jiffies + HZ/100;
771 add_timer(&lp->media);
772 return;
773 }
774
775 /* lp->lock guards the EL3 window. Window should always be 1 except
776 when the lock is held */
777 spin_lock_irqsave(&lp->lock, flags);
778 EL3WINDOW(4);
779 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
780
781 /* Ignore collisions unless we've had no irq's recently */
ff5688ae 782 if (time_before(jiffies, lp->last_irq + HZ)) {
1da177e4
LT		 783 media &= ~0x0010;
784 } else {
785 /* Try harder to detect carrier errors */
786 EL3WINDOW(6);
787 outw(StatsDisable, ioaddr + EL3_CMD);
788 errs = inb(ioaddr + 0);
789 outw(StatsEnable, ioaddr + EL3_CMD);
790 lp->stats.tx_carrier_errors += errs;
791 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
792 }
793
794 if (media != lp->media_status) {
795 if ((media & lp->media_status & 0x8000) &&
796 ((lp->media_status ^ media) & 0x0800))
797 printk(KERN_INFO "%s: %s link beat\n", dev->name,
798 (lp->media_status & 0x0800 ? "lost" : "found"));
799 else if ((media & lp->media_status & 0x4000) &&
800 ((lp->media_status ^ media) & 0x0010))
801 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
802 (lp->media_status & 0x0010 ? "ok" : "problem"));
803 if (dev->if_port == 0) {
804 if (media & 0x8000) {
805 if (media & 0x0800)
806 printk(KERN_INFO "%s: flipped to 10baseT\n",
807 dev->name);
808 else
809 tc589_set_xcvr(dev, 2);
810 } else if (media & 0x4000) {
811 if (media & 0x0010)
812 tc589_set_xcvr(dev, 1);
813 else
814 printk(KERN_INFO "%s: flipped to 10base2\n",
815 dev->name);
816 }
817 }
818 lp->media_status = media;
819 }
820
821 EL3WINDOW(1);
822 spin_unlock_irqrestore(&lp->lock, flags);
823
824reschedule:
825 lp->media.expires = jiffies + HZ;
826 add_timer(&lp->media);
827}
828
829static struct net_device_stats *el3_get_stats(struct net_device *dev)
830{
831 struct el3_private *lp = netdev_priv(dev);
832 unsigned long flags;
fd238232 833 dev_link_t *link = lp->p_dev;
1da177e4
LT		 834
835 if (DEV_OK(link)) {
836 spin_lock_irqsave(&lp->lock, flags);
837 update_stats(dev);
838 spin_unlock_irqrestore(&lp->lock, flags);
839 }
840 return &lp->stats;
841}
842
843/*
844 Update statistics. We change to register window 6, so this should be run
845 single-threaded if the device is active. This is expected to be a rare
846 operation, and it's simpler for the rest of the driver to assume that
847 window 1 is always valid rather than use a special window-state variable.
848
849 Caller must hold the lock for this
850*/
851static void update_stats(struct net_device *dev)
852{
853 struct el3_private *lp = netdev_priv(dev);
854 kio_addr_t ioaddr = dev->base_addr;
855
856 DEBUG(2, "%s: updating the statistics.\n", dev->name);
857 /* Turn off statistics updates while reading. */
858 outw(StatsDisable, ioaddr + EL3_CMD);
859 /* Switch to the stats window, and read everything. */
860 EL3WINDOW(6);
861 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
862 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
863 /* Multiple collisions. */ inb(ioaddr + 2);
864 lp->stats.collisions += inb(ioaddr + 3);
865 lp->stats.tx_window_errors += inb(ioaddr + 4);
866 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
867 lp->stats.tx_packets += inb(ioaddr + 6);
868 /* Rx packets */ inb(ioaddr + 7);
869 /* Tx deferrals */ inb(ioaddr + 8);
870 /* Rx octets */ inw(ioaddr + 10);
871 /* Tx octets */ inw(ioaddr + 12);
872
873 /* Back to window 1, and turn statistics back on. */
874 EL3WINDOW(1);
875 outw(StatsEnable, ioaddr + EL3_CMD);
876}
877
878static int el3_rx(struct net_device *dev)
879{
880 struct el3_private *lp = netdev_priv(dev);
881 kio_addr_t ioaddr = dev->base_addr;
882 int worklimit = 32;
883 short rx_status;
884
885 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
886 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
887 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
888 (--worklimit >= 0)) {
889 if (rx_status & 0x4000) { /* Error, update stats. */
890 short error = rx_status & 0x3800;
891 lp->stats.rx_errors++;
892 switch (error) {
893 case 0x0000: lp->stats.rx_over_errors++; break;
894 case 0x0800: lp->stats.rx_length_errors++; break;
895 case 0x1000: lp->stats.rx_frame_errors++; break;
896 case 0x1800: lp->stats.rx_length_errors++; break;
897 case 0x2000: lp->stats.rx_frame_errors++; break;
898 case 0x2800: lp->stats.rx_crc_errors++; break;
899 }
900 } else {
901 short pkt_len = rx_status & 0x7ff;
902 struct sk_buff *skb;
903
904 skb = dev_alloc_skb(pkt_len+5);
905
906 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
907 pkt_len, rx_status);
908 if (skb != NULL) {
909 skb->dev = dev;
910 skb_reserve(skb, 2);
911 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
912 (pkt_len+3)>>2);
913 skb->protocol = eth_type_trans(skb, dev);
914 netif_rx(skb);
915 dev->last_rx = jiffies;
916 lp->stats.rx_packets++;
917 lp->stats.rx_bytes += pkt_len;
918 } else {
919 DEBUG(1, "%s: couldn't allocate a sk_buff of"
920 " size %d.\n", dev->name, pkt_len);
921 lp->stats.rx_dropped++;
922 }
923 }
924 /* Pop the top of the Rx FIFO */
925 tc589_wait_for_completion(dev, RxDiscard);
926 }
927 if (worklimit == 0)
928 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
929 return 0;
930}
931
932static void set_multicast_list(struct net_device *dev)
933{
934 struct el3_private *lp = netdev_priv(dev);
fd238232 935 dev_link_t *link = lp->p_dev;
1da177e4
LT		 936 kio_addr_t ioaddr = dev->base_addr;
937 u16 opts = SetRxFilter | RxStation | RxBroadcast;
938
939 if (!(DEV_OK(link))) return;
940 if (dev->flags & IFF_PROMISC)
941 opts |= RxMulticast | RxProm;
942 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
943 opts |= RxMulticast;
944 outw(opts, ioaddr + EL3_CMD);
945}
946
947static int el3_close(struct net_device *dev)
948{
949 struct el3_private *lp = netdev_priv(dev);
fd238232 950 dev_link_t *link = lp->p_dev;
1da177e4
LT		 951 kio_addr_t ioaddr = dev->base_addr;
952
953 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
954
955 if (DEV_OK(link)) {
956 /* Turn off statistics ASAP. We update lp->stats below. */
957 outw(StatsDisable, ioaddr + EL3_CMD);
958
959 /* Disable the receiver and transmitter. */
960 outw(RxDisable, ioaddr + EL3_CMD);
961 outw(TxDisable, ioaddr + EL3_CMD);
962
963 if (dev->if_port == 2)
964 /* Turn off thinnet power. Green! */
965 outw(StopCoax, ioaddr + EL3_CMD);
966 else if (dev->if_port == 1) {
967 /* Disable link beat and jabber */
968 EL3WINDOW(4);
969 outw(0, ioaddr + WN4_MEDIA);
970 }
971
972 /* Switching back to window 0 disables the IRQ. */
973 EL3WINDOW(0);
974 /* But we explicitly zero the IRQ line select anyway. */
975 outw(0x0f00, ioaddr + WN0_IRQ);
976
977 /* Check if the card still exists */
978 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
979 update_stats(dev);
980 }
981
982 link->open--;
983 netif_stop_queue(dev);
984 del_timer_sync(&lp->media);
985
986 return 0;
987}
988
7ffec58c
DB		 989static struct pcmcia_device_id tc589_ids[] = {
990 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
991 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
992 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
993 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
994 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
995 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
996 PCMCIA_DEVICE_NULL,
997};
998MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
999
1da177e4
LT		 1000static struct pcmcia_driver tc589_driver = {
1001 .owner = THIS_MODULE,
1002 .drv = {
1003 .name = "3c589_cs",
1004 },
f8cfa618 1005 .probe = tc589_attach,
cc3b4866 1006 .remove = tc589_detach,
7ffec58c 1007 .id_table = tc589_ids,
98e4c28b
DB		 1008 .suspend = tc589_suspend,
1009 .resume = tc589_resume,
1da177e4
LT		 1010};
1011
1012static int __init init_tc589(void)
1013{
1014 return pcmcia_register_driver(&tc589_driver);
1015}
1016
1017static void __exit exit_tc589(void)
1018{
1019 pcmcia_unregister_driver(&tc589_driver);
1da177e4
LT		 1020}
1021
1022module_init(init_tc589);
1023module_exit(exit_tc589);
Linux kernel - Deliverables
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