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