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[PATCH] pcmcia: remove dev_link_t and client_handle_t indirection
[net-next-2.6.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
fba395ee
DB		 145static void tc589_config(struct pcmcia_device *link);
146static void tc589_release(struct pcmcia_device *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
fba395ee 173static int tc589_attach(struct pcmcia_device *link)
1da177e4
LT		 174{
175 struct el3_private *lp;
1da177e4 176 struct net_device *dev;
1da177e4
LT		 177
178 DEBUG(0, "3c589_attach()\n");
f8cfa618 179
1da177e4
LT		 180 /* Create new ethernet device */
181 dev = alloc_etherdev(sizeof(struct el3_private));
182 if (!dev)
f8cfa618 183 return -ENOMEM;
1da177e4 184 lp = netdev_priv(dev);
1da177e4 185 link->priv = dev;
fba395ee 186 lp->p_dev = link;
1da177e4
LT		 187
188 spin_lock_init(&lp->lock);
189 link->io.NumPorts1 = 16;
190 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
191 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
192 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
193 link->irq.Handler = &el3_interrupt;
194 link->irq.Instance = dev;
195 link->conf.Attributes = CONF_ENABLE_IRQ;
1da177e4
LT		 196 link->conf.IntType = INT_MEMORY_AND_IO;
197 link->conf.ConfigIndex = 1;
198 link->conf.Present = PRESENT_OPTION;
f8cfa618 199
1da177e4
LT		 200 /* The EL3-specific entries in the device structure. */
201 SET_MODULE_OWNER(dev);
202 dev->hard_start_xmit = &el3_start_xmit;
203 dev->set_config = &el3_config;
204 dev->get_stats = &el3_get_stats;
205 dev->set_multicast_list = &set_multicast_list;
206 dev->open = &el3_open;
207 dev->stop = &el3_close;
208#ifdef HAVE_TX_TIMEOUT
209 dev->tx_timeout = el3_tx_timeout;
210 dev->watchdog_timeo = TX_TIMEOUT;
211#endif
212 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
213
f8cfa618
DB		 214 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
215 tc589_config(link);
216
217 return 0;
1da177e4
LT		 218} /* tc589_attach */
219
220/*======================================================================
221
222 This deletes a driver "instance". The device is de-registered
223 with Card Services. If it has been released, all local data
224 structures are freed. Otherwise, the structures will be freed
225 when the device is released.
226
227======================================================================*/
228
fba395ee 229static void tc589_detach(struct pcmcia_device *link)
1da177e4
LT		 230{
231 struct net_device *dev = link->priv;
b4635811 232
1da177e4 233 DEBUG(0, "3c589_detach(0x%p)\n", link);
1da177e4 234
fd238232 235 if (link->dev_node)
1da177e4
LT		 236 unregister_netdev(dev);
237
238 if (link->state & DEV_CONFIG)
239 tc589_release(link);
cc3b4866 240
1da177e4
LT		 241 free_netdev(dev);
242} /* tc589_detach */
243
244/*======================================================================
245
246 tc589_config() is scheduled to run after a CARD_INSERTION event
247 is received, to configure the PCMCIA socket, and to make the
248 ethernet device available to the system.
249
250======================================================================*/
251
252#define CS_CHECK(fn, ret) \
253do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
254
fba395ee 255static void tc589_config(struct pcmcia_device *link)
1da177e4 256{
1da177e4
LT		 257 struct net_device *dev = link->priv;
258 struct el3_private *lp = netdev_priv(dev);
259 tuple_t tuple;
260 cisparse_t parse;
261 u16 buf[32], *phys_addr;
262 int last_fn, last_ret, i, j, multi = 0, fifo;
263 kio_addr_t ioaddr;
264 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
265
266 DEBUG(0, "3c589_config(0x%p)\n", link);
267
268 phys_addr = (u16 *)dev->dev_addr;
269 tuple.Attributes = 0;
270 tuple.DesiredTuple = CISTPL_CONFIG;
fba395ee 271 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
1da177e4
LT		 272 tuple.TupleData = (cisdata_t *)buf;
273 tuple.TupleDataMax = sizeof(buf);
274 tuple.TupleOffset = 0;
fba395ee
DB		 275 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
276 CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
1da177e4
LT		 277 link->conf.ConfigBase = parse.config.base;
278 link->conf.Present = parse.config.rmask[0];
279
280 /* Is this a 3c562? */
281 tuple.DesiredTuple = CISTPL_MANFID;
282 tuple.Attributes = TUPLE_RETURN_COMMON;
fba395ee
DB		 283 if ((pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) &&
284 (pcmcia_get_tuple_data(link, &tuple) == CS_SUCCESS)) {
1da177e4
LT		 285 if (le16_to_cpu(buf[0]) != MANFID_3COM)
286 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
287 "3Com card??\n");
288 multi = (le16_to_cpu(buf[1]) == PRODID_3COM_3C562);
289 }
290
291 /* Configure card */
292 link->state |= DEV_CONFIG;
293
294 /* For the 3c562, the base address must be xx00-xx7f */
295 link->io.IOAddrLines = 16;
296 for (i = j = 0; j < 0x400; j += 0x10) {
297 if (multi && (j & 0x80)) continue;
298 link->io.BasePort1 = j ^ 0x300;
fba395ee 299 i = pcmcia_request_io(link, &link->io);
1da177e4
LT		 300 if (i == CS_SUCCESS) break;
301 }
302 if (i != CS_SUCCESS) {
fba395ee 303 cs_error(link, RequestIO, i);
1da177e4
LT		 304 goto failed;
305 }
fba395ee
DB		 306 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
307 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1da177e4
LT		 308
309 dev->irq = link->irq.AssignedIRQ;
310 dev->base_addr = link->io.BasePort1;
311 ioaddr = dev->base_addr;
312 EL3WINDOW(0);
313
314 /* The 3c589 has an extra EEPROM for configuration info, including
315 the hardware address. The 3c562 puts the address in the CIS. */
316 tuple.DesiredTuple = 0x88;
fba395ee
DB		 317 if (pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) {
318 pcmcia_get_tuple_data(link, &tuple);
1da177e4
LT		 319 for (i = 0; i < 3; i++)
320 phys_addr[i] = htons(buf[i]);
321 } else {
322 for (i = 0; i < 3; i++)
323 phys_addr[i] = htons(read_eeprom(ioaddr, i));
324 if (phys_addr[0] == 0x6060) {
325 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
326 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
327 goto failed;
328 }
329 }
330
331 /* The address and resource configuration register aren't loaded from
332 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
333 outw(0x3f00, ioaddr + 8);
334 fifo = inl(ioaddr);
335
336 /* The if_port symbol can be set when the module is loaded */
337 if ((if_port >= 0) && (if_port <= 3))
338 dev->if_port = if_port;
339 else
340 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
341
fd238232 342 link->dev_node = &lp->node;
1da177e4 343 link->state &= ~DEV_CONFIG_PENDING;
fba395ee 344 SET_NETDEV_DEV(dev, &handle_to_dev(link));
1da177e4
LT		 345
346 if (register_netdev(dev) != 0) {
347 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
fd238232 348 link->dev_node = NULL;
1da177e4
LT		 349 goto failed;
350 }
351
352 strcpy(lp->node.dev_name, dev->name);
353
354 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
355 dev->name, (multi ? "562" : "589"), dev->base_addr,
356 dev->irq);
357 for (i = 0; i < 6; i++)
358 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
359 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
360 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
361 if_names[dev->if_port]);
362 return;
363
364cs_failed:
fba395ee 365 cs_error(link, last_fn, last_ret);
1da177e4
LT		 366failed:
367 tc589_release(link);
368 return;
369
370} /* tc589_config */
371
372/*======================================================================
373
374 After a card is removed, tc589_release() will unregister the net
375 device, and release the PCMCIA configuration. If the device is
376 still open, this will be postponed until it is closed.
377
378======================================================================*/
379
fba395ee 380static void tc589_release(struct pcmcia_device *link)
1da177e4 381{
fba395ee 382 pcmcia_disable_device(link);
1da177e4
LT		 383}
384
fba395ee 385static int tc589_suspend(struct pcmcia_device *link)
98e4c28b 386{
98e4c28b
DB		 387 struct net_device *dev = link->priv;
388
8661bb5b
DB		 389 if ((link->state & DEV_CONFIG) && (link->open))
390 netif_device_detach(dev);
98e4c28b
DB		 391
392 return 0;
393}
394
fba395ee 395static int tc589_resume(struct pcmcia_device *link)
98e4c28b 396{
98e4c28b
DB		 397 struct net_device *dev = link->priv;
398
8661bb5b
DB		 399 if ((link->state & DEV_CONFIG) && (link->open)) {
400 tc589_reset(dev);
401 netif_device_attach(dev);
98e4c28b
DB		 402 }
403
404 return 0;
405}
406
1da177e4
LT		 407/*====================================================================*/
408
409/*
410 Use this for commands that may take time to finish
411*/
412static void tc589_wait_for_completion(struct net_device *dev, int cmd)
413{
414 int i = 100;
415 outw(cmd, dev->base_addr + EL3_CMD);
416 while (--i > 0)
417 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
418 if (i == 0)
419 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
420 dev->name, cmd);
421}
422
423/*
424 Read a word from the EEPROM using the regular EEPROM access register.
425 Assume that we are in register window zero.
426*/
427static u16 read_eeprom(kio_addr_t ioaddr, int index)
428{
429 int i;
430 outw(EEPROM_READ + index, ioaddr + 10);
431 /* Reading the eeprom takes 162 us */
432 for (i = 1620; i >= 0; i--)
433 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
434 break;
435 return inw(ioaddr + 12);
436}
437
438/*
439 Set transceiver type, perhaps to something other than what the user
440 specified in dev->if_port.
441*/
442static void tc589_set_xcvr(struct net_device *dev, int if_port)
443{
444 struct el3_private *lp = netdev_priv(dev);
445 kio_addr_t ioaddr = dev->base_addr;
446
447 EL3WINDOW(0);
448 switch (if_port) {
449 case 0: case 1: outw(0, ioaddr + 6); break;
450 case 2: outw(3<<14, ioaddr + 6); break;
451 case 3: outw(1<<14, ioaddr + 6); break;
452 }
453 /* On PCMCIA, this just turns on the LED */
454 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
455 /* 10baseT interface, enable link beat and jabber check. */
456 EL3WINDOW(4);
457 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
458 EL3WINDOW(1);
459 if (if_port == 2)
460 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
461 else
462 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
463}
464
465static void dump_status(struct net_device *dev)
466{
467 kio_addr_t ioaddr = dev->base_addr;
468 EL3WINDOW(1);
469 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
470 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
471 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
472 inw(ioaddr+TX_FREE));
473 EL3WINDOW(4);
474 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
475 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
476 inw(ioaddr+0x08), inw(ioaddr+0x0a));
477 EL3WINDOW(1);
478}
479
480/* Reset and restore all of the 3c589 registers. */
481static void tc589_reset(struct net_device *dev)
482{
483 kio_addr_t ioaddr = dev->base_addr;
484 int i;
485
486 EL3WINDOW(0);
487 outw(0x0001, ioaddr + 4); /* Activate board. */
488 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
489
490 /* Set the station address in window 2. */
491 EL3WINDOW(2);
492 for (i = 0; i < 6; i++)
493 outb(dev->dev_addr[i], ioaddr + i);
494
495 tc589_set_xcvr(dev, dev->if_port);
496
497 /* Switch to the stats window, and clear all stats by reading. */
498 outw(StatsDisable, ioaddr + EL3_CMD);
499 EL3WINDOW(6);
500 for (i = 0; i < 9; i++)
501 inb(ioaddr+i);
502 inw(ioaddr + 10);
503 inw(ioaddr + 12);
504
505 /* Switch to register set 1 for normal use. */
506 EL3WINDOW(1);
507
508 /* Accept b-cast and phys addr only. */
509 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
510 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
511 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
512 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
513 /* Allow status bits to be seen. */
514 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
515 /* Ack all pending events, and set active indicator mask. */
516 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
517 ioaddr + EL3_CMD);
518 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
519 | AdapterFailure, ioaddr + EL3_CMD);
520}
521
522static void netdev_get_drvinfo(struct net_device *dev,
523 struct ethtool_drvinfo *info)
524{
525 strcpy(info->driver, DRV_NAME);
526 strcpy(info->version, DRV_VERSION);
527 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
528}
529
530#ifdef PCMCIA_DEBUG
531static u32 netdev_get_msglevel(struct net_device *dev)
532{
533 return pc_debug;
534}
535
536static void netdev_set_msglevel(struct net_device *dev, u32 level)
537{
538 pc_debug = level;
539}
540#endif /* PCMCIA_DEBUG */
541
542static struct ethtool_ops netdev_ethtool_ops = {
543 .get_drvinfo = netdev_get_drvinfo,
544#ifdef PCMCIA_DEBUG
545 .get_msglevel = netdev_get_msglevel,
546 .set_msglevel = netdev_set_msglevel,
547#endif /* PCMCIA_DEBUG */
548};
549
550static int el3_config(struct net_device *dev, struct ifmap *map)
551{
552 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
553 if (map->port <= 3) {
554 dev->if_port = map->port;
555 printk(KERN_INFO "%s: switched to %s port\n",
556 dev->name, if_names[dev->if_port]);
557 tc589_set_xcvr(dev, dev->if_port);
558 } else
559 return -EINVAL;
560 }
561 return 0;
562}
563
564static int el3_open(struct net_device *dev)
565{
566 struct el3_private *lp = netdev_priv(dev);
fba395ee 567 struct pcmcia_device *link = lp->p_dev;
1da177e4
LT		 568
569 if (!DEV_OK(link))
570 return -ENODEV;
571
572 link->open++;
573 netif_start_queue(dev);
574
575 tc589_reset(dev);
576 init_timer(&lp->media);
577 lp->media.function = &media_check;
578 lp->media.data = (unsigned long) dev;
579 lp->media.expires = jiffies + HZ;
580 add_timer(&lp->media);
581
582 DEBUG(1, "%s: opened, status %4.4x.\n",
583 dev->name, inw(dev->base_addr + EL3_STATUS));
584
585 return 0;
586}
587
588static void el3_tx_timeout(struct net_device *dev)
589{
590 struct el3_private *lp = netdev_priv(dev);
591 kio_addr_t ioaddr = dev->base_addr;
592
593 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
594 dump_status(dev);
595 lp->stats.tx_errors++;
596 dev->trans_start = jiffies;
597 /* Issue TX_RESET and TX_START commands. */
598 tc589_wait_for_completion(dev, TxReset);
599 outw(TxEnable, ioaddr + EL3_CMD);
600 netif_wake_queue(dev);
601}
602
603static void pop_tx_status(struct net_device *dev)
604{
605 struct el3_private *lp = netdev_priv(dev);
606 kio_addr_t ioaddr = dev->base_addr;
607 int i;
608
609 /* Clear the Tx status stack. */
610 for (i = 32; i > 0; i--) {
611 u_char tx_status = inb(ioaddr + TX_STATUS);
612 if (!(tx_status & 0x84)) break;
613 /* reset transmitter on jabber error or underrun */
614 if (tx_status & 0x30)
615 tc589_wait_for_completion(dev, TxReset);
616 if (tx_status & 0x38) {
617 DEBUG(1, "%s: transmit error: status 0x%02x\n",
618 dev->name, tx_status);
619 outw(TxEnable, ioaddr + EL3_CMD);
620 lp->stats.tx_aborted_errors++;
621 }
622 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
623 }
624}
625
626static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
627{
628 kio_addr_t ioaddr = dev->base_addr;
629 struct el3_private *priv = netdev_priv(dev);
630
631 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
632 "status %4.4x.\n", dev->name, (long)skb->len,
633 inw(ioaddr + EL3_STATUS));
634
635 priv->stats.tx_bytes += skb->len;
636
637 /* Put out the doubleword header... */
638 outw(skb->len, ioaddr + TX_FIFO);
639 outw(0x00, ioaddr + TX_FIFO);
640 /* ... and the packet rounded to a doubleword. */
641 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
642
643 dev->trans_start = jiffies;
644 if (inw(ioaddr + TX_FREE) <= 1536) {
645 netif_stop_queue(dev);
646 /* Interrupt us when the FIFO has room for max-sized packet. */
647 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
648 }
649
650 dev_kfree_skb(skb);
651 pop_tx_status(dev);
652
653 return 0;
654}
655
656/* The EL3 interrupt handler. */
657static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
658{
659 struct net_device *dev = (struct net_device *) dev_id;
660 struct el3_private *lp = netdev_priv(dev);
661 kio_addr_t ioaddr;
662 __u16 status;
663 int i = 0, handled = 1;
664
665 if (!netif_device_present(dev))
666 return IRQ_NONE;
667
668 ioaddr = dev->base_addr;
669
670 DEBUG(3, "%s: interrupt, status %4.4x.\n",
671 dev->name, inw(ioaddr + EL3_STATUS));
672
673 spin_lock(&lp->lock);
674 while ((status = inw(ioaddr + EL3_STATUS)) &
675 (IntLatch | RxComplete | StatsFull)) {
676 if ((status & 0xe000) != 0x2000) {
677 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
678 handled = 0;
679 break;
680 }
681
682 if (status & RxComplete)
683 el3_rx(dev);
684
685 if (status & TxAvailable) {
686 DEBUG(3, " TX room bit was handled.\n");
687 /* There's room in the FIFO for a full-sized packet. */
688 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
689 netif_wake_queue(dev);
690 }
691
692 if (status & TxComplete)
693 pop_tx_status(dev);
694
695 if (status & (AdapterFailure | RxEarly | StatsFull)) {
696 /* Handle all uncommon interrupts. */
697 if (status & StatsFull) /* Empty statistics. */
698 update_stats(dev);
699 if (status & RxEarly) { /* Rx early is unused. */
700 el3_rx(dev);
701 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
702 }
703 if (status & AdapterFailure) {
704 u16 fifo_diag;
705 EL3WINDOW(4);
706 fifo_diag = inw(ioaddr + 4);
707 EL3WINDOW(1);
708 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
709 " register %04x.\n", dev->name, fifo_diag);
710 if (fifo_diag & 0x0400) {
711 /* Tx overrun */
712 tc589_wait_for_completion(dev, TxReset);
713 outw(TxEnable, ioaddr + EL3_CMD);
714 }
715 if (fifo_diag & 0x2000) {
716 /* Rx underrun */
717 tc589_wait_for_completion(dev, RxReset);
718 set_multicast_list(dev);
719 outw(RxEnable, ioaddr + EL3_CMD);
720 }
721 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
722 }
723 }
724
725 if (++i > 10) {
726 printk(KERN_ERR "%s: infinite loop in interrupt, "
727 "status %4.4x.\n", dev->name, status);
728 /* Clear all interrupts */
729 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
730 break;
731 }
732 /* Acknowledge the IRQ. */
733 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
734 }
735
736 lp->last_irq = jiffies;
737 spin_unlock(&lp->lock);
738 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
739 dev->name, inw(ioaddr + EL3_STATUS));
740 return IRQ_RETVAL(handled);
741}
742
743static void media_check(unsigned long arg)
744{
745 struct net_device *dev = (struct net_device *)(arg);
746 struct el3_private *lp = netdev_priv(dev);
747 kio_addr_t ioaddr = dev->base_addr;
748 u16 media, errs;
749 unsigned long flags;
750
751 if (!netif_device_present(dev)) goto reschedule;
752
753 EL3WINDOW(1);
754 /* Check for pending interrupt with expired latency timer: with
755 this, we can limp along even if the interrupt is blocked */
756 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
757 (inb(ioaddr + EL3_TIMER) == 0xff)) {
758 if (!lp->fast_poll)
759 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
760 el3_interrupt(dev->irq, lp, NULL);
761 lp->fast_poll = HZ;
762 }
763 if (lp->fast_poll) {
764 lp->fast_poll--;
765 lp->media.expires = jiffies + HZ/100;
766 add_timer(&lp->media);
767 return;
768 }
769
770 /* lp->lock guards the EL3 window. Window should always be 1 except
771 when the lock is held */
772 spin_lock_irqsave(&lp->lock, flags);
773 EL3WINDOW(4);
774 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
775
776 /* Ignore collisions unless we've had no irq's recently */
ff5688ae 777 if (time_before(jiffies, lp->last_irq + HZ)) {
1da177e4
LT		 778 media &= ~0x0010;
779 } else {
780 /* Try harder to detect carrier errors */
781 EL3WINDOW(6);
782 outw(StatsDisable, ioaddr + EL3_CMD);
783 errs = inb(ioaddr + 0);
784 outw(StatsEnable, ioaddr + EL3_CMD);
785 lp->stats.tx_carrier_errors += errs;
786 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
787 }
788
789 if (media != lp->media_status) {
790 if ((media & lp->media_status & 0x8000) &&
791 ((lp->media_status ^ media) & 0x0800))
792 printk(KERN_INFO "%s: %s link beat\n", dev->name,
793 (lp->media_status & 0x0800 ? "lost" : "found"));
794 else if ((media & lp->media_status & 0x4000) &&
795 ((lp->media_status ^ media) & 0x0010))
796 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
797 (lp->media_status & 0x0010 ? "ok" : "problem"));
798 if (dev->if_port == 0) {
799 if (media & 0x8000) {
800 if (media & 0x0800)
801 printk(KERN_INFO "%s: flipped to 10baseT\n",
802 dev->name);
803 else
804 tc589_set_xcvr(dev, 2);
805 } else if (media & 0x4000) {
806 if (media & 0x0010)
807 tc589_set_xcvr(dev, 1);
808 else
809 printk(KERN_INFO "%s: flipped to 10base2\n",
810 dev->name);
811 }
812 }
813 lp->media_status = media;
814 }
815
816 EL3WINDOW(1);
817 spin_unlock_irqrestore(&lp->lock, flags);
818
819reschedule:
820 lp->media.expires = jiffies + HZ;
821 add_timer(&lp->media);
822}
823
824static struct net_device_stats *el3_get_stats(struct net_device *dev)
825{
826 struct el3_private *lp = netdev_priv(dev);
827 unsigned long flags;
fba395ee 828 struct pcmcia_device *link = lp->p_dev;
1da177e4
LT		 829
830 if (DEV_OK(link)) {
831 spin_lock_irqsave(&lp->lock, flags);
832 update_stats(dev);
833 spin_unlock_irqrestore(&lp->lock, flags);
834 }
835 return &lp->stats;
836}
837
838/*
839 Update statistics. We change to register window 6, so this should be run
840 single-threaded if the device is active. This is expected to be a rare
841 operation, and it's simpler for the rest of the driver to assume that
842 window 1 is always valid rather than use a special window-state variable.
843
844 Caller must hold the lock for this
845*/
846static void update_stats(struct net_device *dev)
847{
848 struct el3_private *lp = netdev_priv(dev);
849 kio_addr_t ioaddr = dev->base_addr;
850
851 DEBUG(2, "%s: updating the statistics.\n", dev->name);
852 /* Turn off statistics updates while reading. */
853 outw(StatsDisable, ioaddr + EL3_CMD);
854 /* Switch to the stats window, and read everything. */
855 EL3WINDOW(6);
856 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
857 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
858 /* Multiple collisions. */ inb(ioaddr + 2);
859 lp->stats.collisions += inb(ioaddr + 3);
860 lp->stats.tx_window_errors += inb(ioaddr + 4);
861 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
862 lp->stats.tx_packets += inb(ioaddr + 6);
863 /* Rx packets */ inb(ioaddr + 7);
864 /* Tx deferrals */ inb(ioaddr + 8);
865 /* Rx octets */ inw(ioaddr + 10);
866 /* Tx octets */ inw(ioaddr + 12);
867
868 /* Back to window 1, and turn statistics back on. */
869 EL3WINDOW(1);
870 outw(StatsEnable, ioaddr + EL3_CMD);
871}
872
873static int el3_rx(struct net_device *dev)
874{
875 struct el3_private *lp = netdev_priv(dev);
876 kio_addr_t ioaddr = dev->base_addr;
877 int worklimit = 32;
878 short rx_status;
879
880 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
881 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
882 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
883 (--worklimit >= 0)) {
884 if (rx_status & 0x4000) { /* Error, update stats. */
885 short error = rx_status & 0x3800;
886 lp->stats.rx_errors++;
887 switch (error) {
888 case 0x0000: lp->stats.rx_over_errors++; break;
889 case 0x0800: lp->stats.rx_length_errors++; break;
890 case 0x1000: lp->stats.rx_frame_errors++; break;
891 case 0x1800: lp->stats.rx_length_errors++; break;
892 case 0x2000: lp->stats.rx_frame_errors++; break;
893 case 0x2800: lp->stats.rx_crc_errors++; break;
894 }
895 } else {
896 short pkt_len = rx_status & 0x7ff;
897 struct sk_buff *skb;
898
899 skb = dev_alloc_skb(pkt_len+5);
900
901 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
902 pkt_len, rx_status);
903 if (skb != NULL) {
904 skb->dev = dev;
905 skb_reserve(skb, 2);
906 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
907 (pkt_len+3)>>2);
908 skb->protocol = eth_type_trans(skb, dev);
909 netif_rx(skb);
910 dev->last_rx = jiffies;
911 lp->stats.rx_packets++;
912 lp->stats.rx_bytes += pkt_len;
913 } else {
914 DEBUG(1, "%s: couldn't allocate a sk_buff of"
915 " size %d.\n", dev->name, pkt_len);
916 lp->stats.rx_dropped++;
917 }
918 }
919 /* Pop the top of the Rx FIFO */
920 tc589_wait_for_completion(dev, RxDiscard);
921 }
922 if (worklimit == 0)
923 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
924 return 0;
925}
926
927static void set_multicast_list(struct net_device *dev)
928{
929 struct el3_private *lp = netdev_priv(dev);
fba395ee 930 struct pcmcia_device *link = lp->p_dev;
1da177e4
LT		 931 kio_addr_t ioaddr = dev->base_addr;
932 u16 opts = SetRxFilter | RxStation | RxBroadcast;
933
934 if (!(DEV_OK(link))) return;
935 if (dev->flags & IFF_PROMISC)
936 opts |= RxMulticast | RxProm;
937 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
938 opts |= RxMulticast;
939 outw(opts, ioaddr + EL3_CMD);
940}
941
942static int el3_close(struct net_device *dev)
943{
944 struct el3_private *lp = netdev_priv(dev);
fba395ee 945 struct pcmcia_device *link = lp->p_dev;
1da177e4
LT		 946 kio_addr_t ioaddr = dev->base_addr;
947
948 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
949
950 if (DEV_OK(link)) {
951 /* Turn off statistics ASAP. We update lp->stats below. */
952 outw(StatsDisable, ioaddr + EL3_CMD);
953
954 /* Disable the receiver and transmitter. */
955 outw(RxDisable, ioaddr + EL3_CMD);
956 outw(TxDisable, ioaddr + EL3_CMD);
957
958 if (dev->if_port == 2)
959 /* Turn off thinnet power. Green! */
960 outw(StopCoax, ioaddr + EL3_CMD);
961 else if (dev->if_port == 1) {
962 /* Disable link beat and jabber */
963 EL3WINDOW(4);
964 outw(0, ioaddr + WN4_MEDIA);
965 }
966
967 /* Switching back to window 0 disables the IRQ. */
968 EL3WINDOW(0);
969 /* But we explicitly zero the IRQ line select anyway. */
970 outw(0x0f00, ioaddr + WN0_IRQ);
971
972 /* Check if the card still exists */
973 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
974 update_stats(dev);
975 }
976
977 link->open--;
978 netif_stop_queue(dev);
979 del_timer_sync(&lp->media);
980
981 return 0;
982}
983
7ffec58c
DB		 984static struct pcmcia_device_id tc589_ids[] = {
985 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
986 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
987 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
988 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
989 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
990 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
991 PCMCIA_DEVICE_NULL,
992};
993MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
994
1da177e4
LT		 995static struct pcmcia_driver tc589_driver = {
996 .owner = THIS_MODULE,
997 .drv = {
998 .name = "3c589_cs",
999 },
f8cfa618 1000 .probe = tc589_attach,
cc3b4866 1001 .remove = tc589_detach,
7ffec58c 1002 .id_table = tc589_ids,
98e4c28b
DB		 1003 .suspend = tc589_suspend,
1004 .resume = tc589_resume,
1da177e4
LT		 1005};
1006
1007static int __init init_tc589(void)
1008{
1009 return pcmcia_register_driver(&tc589_driver);
1010}
1011
1012static void __exit exit_tc589(void)
1013{
1014 pcmcia_unregister_driver(&tc589_driver);
1da177e4
LT		 1015}
1016
1017module_init(init_tc589);
1018module_exit(exit_tc589);
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