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3c589_cs: add cis(firmware) of 3Com multifunction pcmcia card
[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
113aa838 18 Updated for 2.5.x by Alan Cox <alan@lxorguk.ukuu.org.uk>
1da177e4
LT		 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 109 dev_node_t node;
1da177e4
LT		 110 /* For transceiver monitoring */
111 struct timer_list media;
112 u16 media_status;
113 u16 fast_poll;
114 unsigned long last_irq;
115 spinlock_t lock;
116};
117
21c0f275 118static const char *if_names[] = { "auto", "10baseT", "10base2", "AUI" };
1da177e4
LT		 119
120/*====================================================================*/
121
122/* Module parameters */
123
124MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
125MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver");
126MODULE_LICENSE("GPL");
127
128#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
129
130/* Special hook for setting if_port when module is loaded */
131INT_MODULE_PARM(if_port, 0);
132
133#ifdef PCMCIA_DEBUG
134INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
135#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
136static char *version =
137DRV_NAME ".c " DRV_VERSION " 2001/10/13 00:08:50 (David Hinds)";
138#else
139#define DEBUG(n, args...)
140#endif
141
142/*====================================================================*/
143
15b99ac1 144static int tc589_config(struct pcmcia_device *link);
fba395ee 145static void tc589_release(struct pcmcia_device *link);
1da177e4 146
906da809 147static u16 read_eeprom(unsigned int ioaddr, int index);
1da177e4
LT		 148static void tc589_reset(struct net_device *dev);
149static void media_check(unsigned long arg);
150static int el3_config(struct net_device *dev, struct ifmap *map);
151static int el3_open(struct net_device *dev);
152static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
7d12e780 153static irqreturn_t el3_interrupt(int irq, void *dev_id);
1da177e4
LT		 154static void update_stats(struct net_device *dev);
155static struct net_device_stats *el3_get_stats(struct net_device *dev);
156static int el3_rx(struct net_device *dev);
157static int el3_close(struct net_device *dev);
158static void el3_tx_timeout(struct net_device *dev);
159static void set_multicast_list(struct net_device *dev);
7282d491 160static const struct ethtool_ops netdev_ethtool_ops;
1da177e4 161
cc3b4866 162static void tc589_detach(struct pcmcia_device *p_dev);
1da177e4 163
1da177e4
LT		 164/*======================================================================
165
166 tc589_attach() creates an "instance" of the driver, allocating
167 local data structures for one device. The device is registered
168 with Card Services.
169
170======================================================================*/
171
97161d4b
SH		 172static const struct net_device_ops el3_netdev_ops = {
173 .ndo_open = el3_open,
174 .ndo_stop = el3_close,
175 .ndo_start_xmit = el3_start_xmit,
176 .ndo_tx_timeout = el3_tx_timeout,
177 .ndo_set_config = el3_config,
178 .ndo_get_stats = el3_get_stats,
179 .ndo_set_multicast_list = set_multicast_list,
180 .ndo_change_mtu = eth_change_mtu,
181 .ndo_set_mac_address = eth_mac_addr,
182 .ndo_validate_addr = eth_validate_addr,
183};
184
15b99ac1 185static int tc589_probe(struct pcmcia_device *link)
1da177e4
LT		 186{
187 struct el3_private *lp;
1da177e4 188 struct net_device *dev;
1da177e4
LT		 189
190 DEBUG(0, "3c589_attach()\n");
f8cfa618 191
1da177e4
LT		 192 /* Create new ethernet device */
193 dev = alloc_etherdev(sizeof(struct el3_private));
194 if (!dev)
f8cfa618 195 return -ENOMEM;
1da177e4 196 lp = netdev_priv(dev);
1da177e4 197 link->priv = dev;
fba395ee 198 lp->p_dev = link;
1da177e4
LT		 199
200 spin_lock_init(&lp->lock);
201 link->io.NumPorts1 = 16;
202 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
5e7bf8cc 203 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_HANDLE_PRESENT;
1da177e4
LT		 204 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
205 link->irq.Handler = &el3_interrupt;
206 link->irq.Instance = dev;
207 link->conf.Attributes = CONF_ENABLE_IRQ;
1da177e4
LT		 208 link->conf.IntType = INT_MEMORY_AND_IO;
209 link->conf.ConfigIndex = 1;
f8cfa618 210
97161d4b 211 dev->netdev_ops = &el3_netdev_ops;
1da177e4 212 dev->watchdog_timeo = TX_TIMEOUT;
97161d4b 213
1da177e4
LT		 214 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
215
15b99ac1 216 return tc589_config(link);
1da177e4
LT		 217} /* tc589_attach */
218
219/*======================================================================
220
221 This deletes a driver "instance". The device is de-registered
222 with Card Services. If it has been released, all local data
223 structures are freed. Otherwise, the structures will be freed
224 when the device is released.
225
226======================================================================*/
227
fba395ee 228static void tc589_detach(struct pcmcia_device *link)
1da177e4
LT		 229{
230 struct net_device *dev = link->priv;
b4635811 231
1da177e4 232 DEBUG(0, "3c589_detach(0x%p)\n", link);
1da177e4 233
fd238232 234 if (link->dev_node)
1da177e4
LT		 235 unregister_netdev(dev);
236
e2d40963 237 tc589_release(link);
cc3b4866 238
1da177e4
LT		 239 free_netdev(dev);
240} /* tc589_detach */
241
242/*======================================================================
243
244 tc589_config() is scheduled to run after a CARD_INSERTION event
245 is received, to configure the PCMCIA socket, and to make the
246 ethernet device available to the system.
247
248======================================================================*/
249
250#define CS_CHECK(fn, ret) \
251do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
252
15b99ac1 253static int tc589_config(struct pcmcia_device *link)
1da177e4 254{
1da177e4
LT		 255 struct net_device *dev = link->priv;
256 struct el3_private *lp = netdev_priv(dev);
257 tuple_t tuple;
b1e247ad
AV		 258 __le16 buf[32];
259 __be16 *phys_addr;
1da177e4 260 int last_fn, last_ret, i, j, multi = 0, fifo;
906da809 261 unsigned int ioaddr;
1da177e4
LT		 262 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
263
264 DEBUG(0, "3c589_config(0x%p)\n", link);
265
b1e247ad 266 phys_addr = (__be16 *)dev->dev_addr;
1da177e4 267 tuple.Attributes = 0;
1da177e4
LT		 268 tuple.TupleData = (cisdata_t *)buf;
269 tuple.TupleDataMax = sizeof(buf);
270 tuple.TupleOffset = 0;
1da177e4 271 tuple.Attributes = TUPLE_RETURN_COMMON;
efd50585
DB		 272
273 /* Is this a 3c562? */
274 if (link->manf_id != MANFID_3COM)
1da177e4
LT		 275 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
276 "3Com card??\n");
efd50585 277 multi = (link->card_id == PRODID_3COM_3C562);
1da177e4
LT		 278
279 /* For the 3c562, the base address must be xx00-xx7f */
280 link->io.IOAddrLines = 16;
281 for (i = j = 0; j < 0x400; j += 0x10) {
282 if (multi && (j & 0x80)) continue;
283 link->io.BasePort1 = j ^ 0x300;
fba395ee 284 i = pcmcia_request_io(link, &link->io);
4c89e88b
DB		 285 if (i == 0)
286 break;
1da177e4 287 }
4c89e88b 288 if (i != 0) {
fba395ee 289 cs_error(link, RequestIO, i);
1da177e4
LT		 290 goto failed;
291 }
fba395ee
DB		 292 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
293 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1da177e4
LT		 294
295 dev->irq = link->irq.AssignedIRQ;
296 dev->base_addr = link->io.BasePort1;
297 ioaddr = dev->base_addr;
298 EL3WINDOW(0);
299
300 /* The 3c589 has an extra EEPROM for configuration info, including
301 the hardware address. The 3c562 puts the address in the CIS. */
302 tuple.DesiredTuple = 0x88;
4c89e88b 303 if (pcmcia_get_first_tuple(link, &tuple) == 0) {
fba395ee 304 pcmcia_get_tuple_data(link, &tuple);
1da177e4 305 for (i = 0; i < 3; i++)
b1e247ad 306 phys_addr[i] = htons(le16_to_cpu(buf[i]));
1da177e4
LT		 307 } else {
308 for (i = 0; i < 3; i++)
309 phys_addr[i] = htons(read_eeprom(ioaddr, i));
b1e247ad 310 if (phys_addr[0] == htons(0x6060)) {
1da177e4
LT		 311 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
312 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
313 goto failed;
314 }
315 }
316
317 /* The address and resource configuration register aren't loaded from
318 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
319 outw(0x3f00, ioaddr + 8);
320 fifo = inl(ioaddr);
321
322 /* The if_port symbol can be set when the module is loaded */
323 if ((if_port >= 0) && (if_port <= 3))
324 dev->if_port = if_port;
325 else
326 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
327
fd238232 328 link->dev_node = &lp->node;
fba395ee 329 SET_NETDEV_DEV(dev, &handle_to_dev(link));
1da177e4
LT		 330
331 if (register_netdev(dev) != 0) {
332 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
fd238232 333 link->dev_node = NULL;
1da177e4
LT		 334 goto failed;
335 }
336
337 strcpy(lp->node.dev_name, dev->name);
338
0795af57 339 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, "
e174961c 340 "hw_addr %pM\n",
0795af57 341 dev->name, (multi ? "562" : "589"), dev->base_addr, dev->irq,
e174961c 342 dev->dev_addr);
1da177e4
LT		 343 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
344 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
345 if_names[dev->if_port]);
15b99ac1 346 return 0;
1da177e4
LT		 347
348cs_failed:
fba395ee 349 cs_error(link, last_fn, last_ret);
1da177e4
LT		 350failed:
351 tc589_release(link);
15b99ac1 352 return -ENODEV;
1da177e4
LT		 353} /* tc589_config */
354
355/*======================================================================
356
357 After a card is removed, tc589_release() will unregister the net
358 device, and release the PCMCIA configuration. If the device is
359 still open, this will be postponed until it is closed.
360
361======================================================================*/
362
fba395ee 363static void tc589_release(struct pcmcia_device *link)
1da177e4 364{
fba395ee 365 pcmcia_disable_device(link);
1da177e4
LT		 366}
367
fba395ee 368static int tc589_suspend(struct pcmcia_device *link)
98e4c28b 369{
98e4c28b
DB		 370 struct net_device *dev = link->priv;
371
e2d40963 372 if (link->open)
8661bb5b 373 netif_device_detach(dev);
98e4c28b
DB		 374
375 return 0;
376}
377
fba395ee 378static int tc589_resume(struct pcmcia_device *link)
98e4c28b 379{
98e4c28b
DB		 380 struct net_device *dev = link->priv;
381
e2d40963 382 if (link->open) {
8661bb5b
DB		 383 tc589_reset(dev);
384 netif_device_attach(dev);
98e4c28b
DB		 385 }
386
387 return 0;
388}
389
1da177e4
LT		 390/*====================================================================*/
391
392/*
393 Use this for commands that may take time to finish
394*/
395static void tc589_wait_for_completion(struct net_device *dev, int cmd)
396{
397 int i = 100;
398 outw(cmd, dev->base_addr + EL3_CMD);
399 while (--i > 0)
400 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
401 if (i == 0)
402 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
403 dev->name, cmd);
404}
405
406/*
407 Read a word from the EEPROM using the regular EEPROM access register.
408 Assume that we are in register window zero.
409*/
906da809 410static u16 read_eeprom(unsigned int ioaddr, int index)
1da177e4
LT		 411{
412 int i;
413 outw(EEPROM_READ + index, ioaddr + 10);
414 /* Reading the eeprom takes 162 us */
415 for (i = 1620; i >= 0; i--)
416 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
417 break;
418 return inw(ioaddr + 12);
419}
420
421/*
422 Set transceiver type, perhaps to something other than what the user
423 specified in dev->if_port.
424*/
425static void tc589_set_xcvr(struct net_device *dev, int if_port)
426{
427 struct el3_private *lp = netdev_priv(dev);
906da809 428 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 429
430 EL3WINDOW(0);
431 switch (if_port) {
432 case 0: case 1: outw(0, ioaddr + 6); break;
433 case 2: outw(3<<14, ioaddr + 6); break;
434 case 3: outw(1<<14, ioaddr + 6); break;
435 }
436 /* On PCMCIA, this just turns on the LED */
437 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
438 /* 10baseT interface, enable link beat and jabber check. */
439 EL3WINDOW(4);
440 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
441 EL3WINDOW(1);
442 if (if_port == 2)
443 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
444 else
445 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
446}
447
448static void dump_status(struct net_device *dev)
449{
906da809 450 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 451 EL3WINDOW(1);
452 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
453 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
454 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
455 inw(ioaddr+TX_FREE));
456 EL3WINDOW(4);
457 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
458 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
459 inw(ioaddr+0x08), inw(ioaddr+0x0a));
460 EL3WINDOW(1);
461}
462
463/* Reset and restore all of the 3c589 registers. */
464static void tc589_reset(struct net_device *dev)
465{
906da809 466 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 467 int i;
468
469 EL3WINDOW(0);
470 outw(0x0001, ioaddr + 4); /* Activate board. */
471 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
472
473 /* Set the station address in window 2. */
474 EL3WINDOW(2);
475 for (i = 0; i < 6; i++)
476 outb(dev->dev_addr[i], ioaddr + i);
477
478 tc589_set_xcvr(dev, dev->if_port);
479
480 /* Switch to the stats window, and clear all stats by reading. */
481 outw(StatsDisable, ioaddr + EL3_CMD);
482 EL3WINDOW(6);
483 for (i = 0; i < 9; i++)
484 inb(ioaddr+i);
485 inw(ioaddr + 10);
486 inw(ioaddr + 12);
487
488 /* Switch to register set 1 for normal use. */
489 EL3WINDOW(1);
490
491 /* Accept b-cast and phys addr only. */
492 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
493 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
494 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
495 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
496 /* Allow status bits to be seen. */
497 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
498 /* Ack all pending events, and set active indicator mask. */
499 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
500 ioaddr + EL3_CMD);
501 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
502 | AdapterFailure, ioaddr + EL3_CMD);
503}
504
505static void netdev_get_drvinfo(struct net_device *dev,
506 struct ethtool_drvinfo *info)
507{
508 strcpy(info->driver, DRV_NAME);
509 strcpy(info->version, DRV_VERSION);
510 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
511}
512
513#ifdef PCMCIA_DEBUG
514static u32 netdev_get_msglevel(struct net_device *dev)
515{
516 return pc_debug;
517}
518
519static void netdev_set_msglevel(struct net_device *dev, u32 level)
520{
521 pc_debug = level;
522}
523#endif /* PCMCIA_DEBUG */
524
7282d491 525static const struct ethtool_ops netdev_ethtool_ops = {
1da177e4
LT		 526 .get_drvinfo = netdev_get_drvinfo,
527#ifdef PCMCIA_DEBUG
528 .get_msglevel = netdev_get_msglevel,
529 .set_msglevel = netdev_set_msglevel,
530#endif /* PCMCIA_DEBUG */
531};
532
533static int el3_config(struct net_device *dev, struct ifmap *map)
534{
535 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
536 if (map->port <= 3) {
537 dev->if_port = map->port;
538 printk(KERN_INFO "%s: switched to %s port\n",
539 dev->name, if_names[dev->if_port]);
540 tc589_set_xcvr(dev, dev->if_port);
541 } else
542 return -EINVAL;
543 }
544 return 0;
545}
546
547static int el3_open(struct net_device *dev)
548{
549 struct el3_private *lp = netdev_priv(dev);
fba395ee 550 struct pcmcia_device *link = lp->p_dev;
1da177e4 551
9940ec36 552 if (!pcmcia_dev_present(link))
1da177e4
LT		 553 return -ENODEV;
554
555 link->open++;
556 netif_start_queue(dev);
557
558 tc589_reset(dev);
559 init_timer(&lp->media);
560 lp->media.function = &media_check;
561 lp->media.data = (unsigned long) dev;
562 lp->media.expires = jiffies + HZ;
563 add_timer(&lp->media);
564
565 DEBUG(1, "%s: opened, status %4.4x.\n",
566 dev->name, inw(dev->base_addr + EL3_STATUS));
567
568 return 0;
569}
570
571static void el3_tx_timeout(struct net_device *dev)
572{
906da809 573 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 574
575 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
576 dump_status(dev);
cd65284f 577 dev->stats.tx_errors++;
1da177e4
LT		 578 dev->trans_start = jiffies;
579 /* Issue TX_RESET and TX_START commands. */
580 tc589_wait_for_completion(dev, TxReset);
581 outw(TxEnable, ioaddr + EL3_CMD);
582 netif_wake_queue(dev);
583}
584
585static void pop_tx_status(struct net_device *dev)
586{
906da809 587 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 588 int i;
589
590 /* Clear the Tx status stack. */
591 for (i = 32; i > 0; i--) {
592 u_char tx_status = inb(ioaddr + TX_STATUS);
593 if (!(tx_status & 0x84)) break;
594 /* reset transmitter on jabber error or underrun */
595 if (tx_status & 0x30)
596 tc589_wait_for_completion(dev, TxReset);
597 if (tx_status & 0x38) {
598 DEBUG(1, "%s: transmit error: status 0x%02x\n",
599 dev->name, tx_status);
600 outw(TxEnable, ioaddr + EL3_CMD);
cd65284f 601 dev->stats.tx_aborted_errors++;
1da177e4
LT		 602 }
603 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
604 }
605}
606
607static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
608{
906da809 609 unsigned int ioaddr = dev->base_addr;
1da177e4 610 struct el3_private *priv = netdev_priv(dev);
d08d2839 611 unsigned long flags;
1da177e4
LT		 612
613 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
614 "status %4.4x.\n", dev->name, (long)skb->len,
615 inw(ioaddr + EL3_STATUS));
616
d08d2839
K		 617 spin_lock_irqsave(&priv->lock, flags);
618
cd65284f 619 dev->stats.tx_bytes += skb->len;
1da177e4
LT		 620
621 /* Put out the doubleword header... */
622 outw(skb->len, ioaddr + TX_FIFO);
623 outw(0x00, ioaddr + TX_FIFO);
624 /* ... and the packet rounded to a doubleword. */
625 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
626
627 dev->trans_start = jiffies;
628 if (inw(ioaddr + TX_FREE) <= 1536) {
629 netif_stop_queue(dev);
630 /* Interrupt us when the FIFO has room for max-sized packet. */
631 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
632 }
633
1da177e4 634 pop_tx_status(dev);
d08d2839 635 spin_unlock_irqrestore(&priv->lock, flags);
63ac9b91 636 dev_kfree_skb(skb);
1da177e4
LT		 637
638 return 0;
639}
640
641/* The EL3 interrupt handler. */
7d12e780 642static irqreturn_t el3_interrupt(int irq, void *dev_id)
1da177e4
LT		 643{
644 struct net_device *dev = (struct net_device *) dev_id;
645 struct el3_private *lp = netdev_priv(dev);
906da809 646 unsigned int ioaddr;
1da177e4
LT		 647 __u16 status;
648 int i = 0, handled = 1;
649
650 if (!netif_device_present(dev))
651 return IRQ_NONE;
652
653 ioaddr = dev->base_addr;
654
655 DEBUG(3, "%s: interrupt, status %4.4x.\n",
656 dev->name, inw(ioaddr + EL3_STATUS));
657
658 spin_lock(&lp->lock);
659 while ((status = inw(ioaddr + EL3_STATUS)) &
660 (IntLatch | RxComplete | StatsFull)) {
661 if ((status & 0xe000) != 0x2000) {
662 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
663 handled = 0;
664 break;
665 }
666
667 if (status & RxComplete)
668 el3_rx(dev);
669
670 if (status & TxAvailable) {
671 DEBUG(3, " TX room bit was handled.\n");
672 /* There's room in the FIFO for a full-sized packet. */
673 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
674 netif_wake_queue(dev);
675 }
676
677 if (status & TxComplete)
678 pop_tx_status(dev);
679
680 if (status & (AdapterFailure | RxEarly | StatsFull)) {
681 /* Handle all uncommon interrupts. */
682 if (status & StatsFull) /* Empty statistics. */
683 update_stats(dev);
684 if (status & RxEarly) { /* Rx early is unused. */
685 el3_rx(dev);
686 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
687 }
688 if (status & AdapterFailure) {
689 u16 fifo_diag;
690 EL3WINDOW(4);
691 fifo_diag = inw(ioaddr + 4);
692 EL3WINDOW(1);
693 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
694 " register %04x.\n", dev->name, fifo_diag);
695 if (fifo_diag & 0x0400) {
696 /* Tx overrun */
697 tc589_wait_for_completion(dev, TxReset);
698 outw(TxEnable, ioaddr + EL3_CMD);
699 }
700 if (fifo_diag & 0x2000) {
701 /* Rx underrun */
702 tc589_wait_for_completion(dev, RxReset);
703 set_multicast_list(dev);
704 outw(RxEnable, ioaddr + EL3_CMD);
705 }
706 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
707 }
708 }
709
710 if (++i > 10) {
711 printk(KERN_ERR "%s: infinite loop in interrupt, "
712 "status %4.4x.\n", dev->name, status);
713 /* Clear all interrupts */
714 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
715 break;
716 }
717 /* Acknowledge the IRQ. */
718 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
719 }
720
721 lp->last_irq = jiffies;
722 spin_unlock(&lp->lock);
723 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
724 dev->name, inw(ioaddr + EL3_STATUS));
725 return IRQ_RETVAL(handled);
726}
727
728static void media_check(unsigned long arg)
729{
730 struct net_device *dev = (struct net_device *)(arg);
731 struct el3_private *lp = netdev_priv(dev);
906da809 732 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 733 u16 media, errs;
734 unsigned long flags;
735
736 if (!netif_device_present(dev)) goto reschedule;
737
1da177e4
LT		 738 /* Check for pending interrupt with expired latency timer: with
739 this, we can limp along even if the interrupt is blocked */
740 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
741 (inb(ioaddr + EL3_TIMER) == 0xff)) {
742 if (!lp->fast_poll)
743 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
d08d2839 744 el3_interrupt(dev->irq, dev);
1da177e4
LT		 745 lp->fast_poll = HZ;
746 }
747 if (lp->fast_poll) {
748 lp->fast_poll--;
749 lp->media.expires = jiffies + HZ/100;
750 add_timer(&lp->media);
751 return;
752 }
753
754 /* lp->lock guards the EL3 window. Window should always be 1 except
755 when the lock is held */
756 spin_lock_irqsave(&lp->lock, flags);
757 EL3WINDOW(4);
758 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
759
760 /* Ignore collisions unless we've had no irq's recently */
ff5688ae 761 if (time_before(jiffies, lp->last_irq + HZ)) {
1da177e4
LT		 762 media &= ~0x0010;
763 } else {
764 /* Try harder to detect carrier errors */
765 EL3WINDOW(6);
766 outw(StatsDisable, ioaddr + EL3_CMD);
767 errs = inb(ioaddr + 0);
768 outw(StatsEnable, ioaddr + EL3_CMD);
cd65284f 769 dev->stats.tx_carrier_errors += errs;
1da177e4
LT		 770 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
771 }
772
773 if (media != lp->media_status) {
774 if ((media & lp->media_status & 0x8000) &&
775 ((lp->media_status ^ media) & 0x0800))
776 printk(KERN_INFO "%s: %s link beat\n", dev->name,
777 (lp->media_status & 0x0800 ? "lost" : "found"));
778 else if ((media & lp->media_status & 0x4000) &&
779 ((lp->media_status ^ media) & 0x0010))
780 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
781 (lp->media_status & 0x0010 ? "ok" : "problem"));
782 if (dev->if_port == 0) {
783 if (media & 0x8000) {
784 if (media & 0x0800)
785 printk(KERN_INFO "%s: flipped to 10baseT\n",
786 dev->name);
787 else
788 tc589_set_xcvr(dev, 2);
789 } else if (media & 0x4000) {
790 if (media & 0x0010)
791 tc589_set_xcvr(dev, 1);
792 else
793 printk(KERN_INFO "%s: flipped to 10base2\n",
794 dev->name);
795 }
796 }
797 lp->media_status = media;
798 }
799
800 EL3WINDOW(1);
801 spin_unlock_irqrestore(&lp->lock, flags);
802
803reschedule:
804 lp->media.expires = jiffies + HZ;
805 add_timer(&lp->media);
806}
807
808static struct net_device_stats *el3_get_stats(struct net_device *dev)
809{
810 struct el3_private *lp = netdev_priv(dev);
811 unsigned long flags;
fba395ee 812 struct pcmcia_device *link = lp->p_dev;
1da177e4 813
9940ec36 814 if (pcmcia_dev_present(link)) {
1da177e4
LT		 815 spin_lock_irqsave(&lp->lock, flags);
816 update_stats(dev);
817 spin_unlock_irqrestore(&lp->lock, flags);
818 }
cd65284f 819 return &dev->stats;
1da177e4
LT		 820}
821
822/*
823 Update statistics. We change to register window 6, so this should be run
824 single-threaded if the device is active. This is expected to be a rare
825 operation, and it's simpler for the rest of the driver to assume that
826 window 1 is always valid rather than use a special window-state variable.
827
828 Caller must hold the lock for this
829*/
830static void update_stats(struct net_device *dev)
831{
906da809 832 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 833
834 DEBUG(2, "%s: updating the statistics.\n", dev->name);
835 /* Turn off statistics updates while reading. */
836 outw(StatsDisable, ioaddr + EL3_CMD);
837 /* Switch to the stats window, and read everything. */
838 EL3WINDOW(6);
cd65284f
PZ		 839 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
840 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
1da177e4 841 /* Multiple collisions. */ inb(ioaddr + 2);
cd65284f
PZ		 842 dev->stats.collisions += inb(ioaddr + 3);
843 dev->stats.tx_window_errors += inb(ioaddr + 4);
844 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
845 dev->stats.tx_packets += inb(ioaddr + 6);
1da177e4
LT		 846 /* Rx packets */ inb(ioaddr + 7);
847 /* Tx deferrals */ inb(ioaddr + 8);
848 /* Rx octets */ inw(ioaddr + 10);
849 /* Tx octets */ inw(ioaddr + 12);
850
851 /* Back to window 1, and turn statistics back on. */
852 EL3WINDOW(1);
853 outw(StatsEnable, ioaddr + EL3_CMD);
854}
855
856static int el3_rx(struct net_device *dev)
857{
906da809 858 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 859 int worklimit = 32;
860 short rx_status;
861
862 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
863 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
864 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
b9bdcd9b
RK		 865 worklimit > 0) {
866 worklimit--;
1da177e4
LT		 867 if (rx_status & 0x4000) { /* Error, update stats. */
868 short error = rx_status & 0x3800;
cd65284f 869 dev->stats.rx_errors++;
1da177e4 870 switch (error) {
cd65284f
PZ		 871 case 0x0000: dev->stats.rx_over_errors++; break;
872 case 0x0800: dev->stats.rx_length_errors++; break;
873 case 0x1000: dev->stats.rx_frame_errors++; break;
874 case 0x1800: dev->stats.rx_length_errors++; break;
875 case 0x2000: dev->stats.rx_frame_errors++; break;
876 case 0x2800: dev->stats.rx_crc_errors++; break;
1da177e4
LT		 877 }
878 } else {
879 short pkt_len = rx_status & 0x7ff;
880 struct sk_buff *skb;
881
882 skb = dev_alloc_skb(pkt_len+5);
883
884 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
885 pkt_len, rx_status);
886 if (skb != NULL) {
1da177e4
LT		 887 skb_reserve(skb, 2);
888 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
889 (pkt_len+3)>>2);
890 skb->protocol = eth_type_trans(skb, dev);
891 netif_rx(skb);
cd65284f
PZ		 892 dev->stats.rx_packets++;
893 dev->stats.rx_bytes += pkt_len;
1da177e4
LT		 894 } else {
895 DEBUG(1, "%s: couldn't allocate a sk_buff of"
896 " size %d.\n", dev->name, pkt_len);
cd65284f 897 dev->stats.rx_dropped++;
1da177e4
LT		 898 }
899 }
900 /* Pop the top of the Rx FIFO */
901 tc589_wait_for_completion(dev, RxDiscard);
902 }
903 if (worklimit == 0)
904 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
905 return 0;
906}
907
908static void set_multicast_list(struct net_device *dev)
909{
910 struct el3_private *lp = netdev_priv(dev);
fba395ee 911 struct pcmcia_device *link = lp->p_dev;
906da809 912 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 913 u16 opts = SetRxFilter | RxStation | RxBroadcast;
914
9940ec36 915 if (!pcmcia_dev_present(link)) return;
1da177e4
LT		 916 if (dev->flags & IFF_PROMISC)
917 opts |= RxMulticast | RxProm;
918 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
919 opts |= RxMulticast;
920 outw(opts, ioaddr + EL3_CMD);
921}
922
923static int el3_close(struct net_device *dev)
924{
925 struct el3_private *lp = netdev_priv(dev);
fba395ee 926 struct pcmcia_device *link = lp->p_dev;
906da809 927 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 928
929 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
930
9940ec36 931 if (pcmcia_dev_present(link)) {
cd65284f 932 /* Turn off statistics ASAP. We update dev->stats below. */
1da177e4
LT		 933 outw(StatsDisable, ioaddr + EL3_CMD);
934
935 /* Disable the receiver and transmitter. */
936 outw(RxDisable, ioaddr + EL3_CMD);
937 outw(TxDisable, ioaddr + EL3_CMD);
938
939 if (dev->if_port == 2)
940 /* Turn off thinnet power. Green! */
941 outw(StopCoax, ioaddr + EL3_CMD);
942 else if (dev->if_port == 1) {
943 /* Disable link beat and jabber */
944 EL3WINDOW(4);
945 outw(0, ioaddr + WN4_MEDIA);
946 }
947
948 /* Switching back to window 0 disables the IRQ. */
949 EL3WINDOW(0);
950 /* But we explicitly zero the IRQ line select anyway. */
951 outw(0x0f00, ioaddr + WN0_IRQ);
952
953 /* Check if the card still exists */
954 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
955 update_stats(dev);
956 }
957
958 link->open--;
959 netif_stop_queue(dev);
960 del_timer_sync(&lp->media);
961
962 return 0;
963}
964
7ffec58c
DB		 965static struct pcmcia_device_id tc589_ids[] = {
966 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
967 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
968 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
969 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
f0a3a153
KK		 970 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "cis/3CXEM556.cis"),
971 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "cis/3CXEM556.cis"),
7ffec58c
DB		 972 PCMCIA_DEVICE_NULL,
973};
974MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
975
1da177e4
LT		 976static struct pcmcia_driver tc589_driver = {
977 .owner = THIS_MODULE,
978 .drv = {
979 .name = "3c589_cs",
980 },
15b99ac1 981 .probe = tc589_probe,
cc3b4866 982 .remove = tc589_detach,
7ffec58c 983 .id_table = tc589_ids,
98e4c28b
DB		 984 .suspend = tc589_suspend,
985 .resume = tc589_resume,
1da177e4
LT		 986};
987
988static int __init init_tc589(void)
989{
990 return pcmcia_register_driver(&tc589_driver);
991}
992
993static void __exit exit_tc589(void)
994{
995 pcmcia_unregister_driver(&tc589_driver);
1da177e4
LT		 996}
997
998module_init(init_tc589);
999module_exit(exit_tc589);
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