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[PATCH] PCMCIA: fix drivers broken by recent cleanup
[GitHub/mt8127/android_kernel_alcatel_ttab.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
15b99ac1 145static int tc589_config(struct pcmcia_device *link);
fba395ee 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);
7d12e780 154static irqreturn_t el3_interrupt(int irq, void *dev_id);
1da177e4
LT		 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);
7282d491 161static const struct ethtool_ops netdev_ethtool_ops;
1da177e4 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
15b99ac1 173static int tc589_probe(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;
f8cfa618 198
1da177e4
LT		 199 /* The EL3-specific entries in the device structure. */
200 SET_MODULE_OWNER(dev);
201 dev->hard_start_xmit = &el3_start_xmit;
202 dev->set_config = &el3_config;
203 dev->get_stats = &el3_get_stats;
204 dev->set_multicast_list = &set_multicast_list;
205 dev->open = &el3_open;
206 dev->stop = &el3_close;
207#ifdef HAVE_TX_TIMEOUT
208 dev->tx_timeout = el3_tx_timeout;
209 dev->watchdog_timeo = TX_TIMEOUT;
210#endif
211 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
212
15b99ac1 213 return tc589_config(link);
1da177e4
LT		 214} /* tc589_attach */
215
216/*======================================================================
217
218 This deletes a driver "instance". The device is de-registered
219 with Card Services. If it has been released, all local data
220 structures are freed. Otherwise, the structures will be freed
221 when the device is released.
222
223======================================================================*/
224
fba395ee 225static void tc589_detach(struct pcmcia_device *link)
1da177e4
LT		 226{
227 struct net_device *dev = link->priv;
b4635811 228
1da177e4 229 DEBUG(0, "3c589_detach(0x%p)\n", link);
1da177e4 230
fd238232 231 if (link->dev_node)
1da177e4
LT		 232 unregister_netdev(dev);
233
e2d40963 234 tc589_release(link);
cc3b4866 235
1da177e4
LT		 236 free_netdev(dev);
237} /* tc589_detach */
238
239/*======================================================================
240
241 tc589_config() is scheduled to run after a CARD_INSERTION event
242 is received, to configure the PCMCIA socket, and to make the
243 ethernet device available to the system.
244
245======================================================================*/
246
247#define CS_CHECK(fn, ret) \
248do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
249
15b99ac1 250static int tc589_config(struct pcmcia_device *link)
1da177e4 251{
1da177e4
LT		 252 struct net_device *dev = link->priv;
253 struct el3_private *lp = netdev_priv(dev);
254 tuple_t tuple;
1da177e4
LT		 255 u16 buf[32], *phys_addr;
256 int last_fn, last_ret, i, j, multi = 0, fifo;
257 kio_addr_t ioaddr;
258 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
259
260 DEBUG(0, "3c589_config(0x%p)\n", link);
261
262 phys_addr = (u16 *)dev->dev_addr;
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);
1da177e4
LT		 281 if (i == CS_SUCCESS) break;
282 }
283 if (i != CS_SUCCESS) {
fba395ee 284 cs_error(link, RequestIO, i);
1da177e4
LT		 285 goto failed;
286 }
fba395ee
DB		 287 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
288 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1da177e4
LT		 289
290 dev->irq = link->irq.AssignedIRQ;
291 dev->base_addr = link->io.BasePort1;
292 ioaddr = dev->base_addr;
293 EL3WINDOW(0);
294
295 /* The 3c589 has an extra EEPROM for configuration info, including
296 the hardware address. The 3c562 puts the address in the CIS. */
297 tuple.DesiredTuple = 0x88;
fba395ee
DB		 298 if (pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) {
299 pcmcia_get_tuple_data(link, &tuple);
1da177e4
LT		 300 for (i = 0; i < 3; i++)
301 phys_addr[i] = htons(buf[i]);
302 } else {
303 for (i = 0; i < 3; i++)
304 phys_addr[i] = htons(read_eeprom(ioaddr, i));
305 if (phys_addr[0] == 0x6060) {
306 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
307 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
308 goto failed;
309 }
310 }
311
312 /* The address and resource configuration register aren't loaded from
313 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
314 outw(0x3f00, ioaddr + 8);
315 fifo = inl(ioaddr);
316
317 /* The if_port symbol can be set when the module is loaded */
318 if ((if_port >= 0) && (if_port <= 3))
319 dev->if_port = if_port;
320 else
321 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
322
fd238232 323 link->dev_node = &lp->node;
fba395ee 324 SET_NETDEV_DEV(dev, &handle_to_dev(link));
1da177e4
LT		 325
326 if (register_netdev(dev) != 0) {
327 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
fd238232 328 link->dev_node = NULL;
1da177e4
LT		 329 goto failed;
330 }
331
332 strcpy(lp->node.dev_name, dev->name);
333
334 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
335 dev->name, (multi ? "562" : "589"), dev->base_addr,
336 dev->irq);
337 for (i = 0; i < 6; i++)
338 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
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*/
406static u16 read_eeprom(kio_addr_t ioaddr, int index)
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);
424 kio_addr_t ioaddr = dev->base_addr;
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{
446 kio_addr_t ioaddr = dev->base_addr;
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{
462 kio_addr_t ioaddr = dev->base_addr;
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{
569 struct el3_private *lp = netdev_priv(dev);
570 kio_addr_t ioaddr = dev->base_addr;
571
572 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
573 dump_status(dev);
574 lp->stats.tx_errors++;
575 dev->trans_start = jiffies;
576 /* Issue TX_RESET and TX_START commands. */
577 tc589_wait_for_completion(dev, TxReset);
578 outw(TxEnable, ioaddr + EL3_CMD);
579 netif_wake_queue(dev);
580}
581
582static void pop_tx_status(struct net_device *dev)
583{
584 struct el3_private *lp = netdev_priv(dev);
585 kio_addr_t ioaddr = dev->base_addr;
586 int i;
587
588 /* Clear the Tx status stack. */
589 for (i = 32; i > 0; i--) {
590 u_char tx_status = inb(ioaddr + TX_STATUS);
591 if (!(tx_status & 0x84)) break;
592 /* reset transmitter on jabber error or underrun */
593 if (tx_status & 0x30)
594 tc589_wait_for_completion(dev, TxReset);
595 if (tx_status & 0x38) {
596 DEBUG(1, "%s: transmit error: status 0x%02x\n",
597 dev->name, tx_status);
598 outw(TxEnable, ioaddr + EL3_CMD);
599 lp->stats.tx_aborted_errors++;
600 }
601 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
602 }
603}
604
605static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
606{
607 kio_addr_t ioaddr = dev->base_addr;
608 struct el3_private *priv = netdev_priv(dev);
609
610 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
611 "status %4.4x.\n", dev->name, (long)skb->len,
612 inw(ioaddr + EL3_STATUS));
613
614 priv->stats.tx_bytes += skb->len;
615
616 /* Put out the doubleword header... */
617 outw(skb->len, ioaddr + TX_FIFO);
618 outw(0x00, ioaddr + TX_FIFO);
619 /* ... and the packet rounded to a doubleword. */
620 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
621
622 dev->trans_start = jiffies;
623 if (inw(ioaddr + TX_FREE) <= 1536) {
624 netif_stop_queue(dev);
625 /* Interrupt us when the FIFO has room for max-sized packet. */
626 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
627 }
628
629 dev_kfree_skb(skb);
630 pop_tx_status(dev);
631
632 return 0;
633}
634
635/* The EL3 interrupt handler. */
7d12e780 636static irqreturn_t el3_interrupt(int irq, void *dev_id)
1da177e4
LT		 637{
638 struct net_device *dev = (struct net_device *) dev_id;
639 struct el3_private *lp = netdev_priv(dev);
640 kio_addr_t ioaddr;
641 __u16 status;
642 int i = 0, handled = 1;
643
644 if (!netif_device_present(dev))
645 return IRQ_NONE;
646
647 ioaddr = dev->base_addr;
648
649 DEBUG(3, "%s: interrupt, status %4.4x.\n",
650 dev->name, inw(ioaddr + EL3_STATUS));
651
652 spin_lock(&lp->lock);
653 while ((status = inw(ioaddr + EL3_STATUS)) &
654 (IntLatch | RxComplete | StatsFull)) {
655 if ((status & 0xe000) != 0x2000) {
656 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
657 handled = 0;
658 break;
659 }
660
661 if (status & RxComplete)
662 el3_rx(dev);
663
664 if (status & TxAvailable) {
665 DEBUG(3, " TX room bit was handled.\n");
666 /* There's room in the FIFO for a full-sized packet. */
667 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
668 netif_wake_queue(dev);
669 }
670
671 if (status & TxComplete)
672 pop_tx_status(dev);
673
674 if (status & (AdapterFailure | RxEarly | StatsFull)) {
675 /* Handle all uncommon interrupts. */
676 if (status & StatsFull) /* Empty statistics. */
677 update_stats(dev);
678 if (status & RxEarly) { /* Rx early is unused. */
679 el3_rx(dev);
680 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
681 }
682 if (status & AdapterFailure) {
683 u16 fifo_diag;
684 EL3WINDOW(4);
685 fifo_diag = inw(ioaddr + 4);
686 EL3WINDOW(1);
687 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
688 " register %04x.\n", dev->name, fifo_diag);
689 if (fifo_diag & 0x0400) {
690 /* Tx overrun */
691 tc589_wait_for_completion(dev, TxReset);
692 outw(TxEnable, ioaddr + EL3_CMD);
693 }
694 if (fifo_diag & 0x2000) {
695 /* Rx underrun */
696 tc589_wait_for_completion(dev, RxReset);
697 set_multicast_list(dev);
698 outw(RxEnable, ioaddr + EL3_CMD);
699 }
700 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
701 }
702 }
703
704 if (++i > 10) {
705 printk(KERN_ERR "%s: infinite loop in interrupt, "
706 "status %4.4x.\n", dev->name, status);
707 /* Clear all interrupts */
708 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
709 break;
710 }
711 /* Acknowledge the IRQ. */
712 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
713 }
714
715 lp->last_irq = jiffies;
716 spin_unlock(&lp->lock);
717 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
718 dev->name, inw(ioaddr + EL3_STATUS));
719 return IRQ_RETVAL(handled);
720}
721
722static void media_check(unsigned long arg)
723{
724 struct net_device *dev = (struct net_device *)(arg);
725 struct el3_private *lp = netdev_priv(dev);
726 kio_addr_t ioaddr = dev->base_addr;
727 u16 media, errs;
728 unsigned long flags;
729
730 if (!netif_device_present(dev)) goto reschedule;
731
732 EL3WINDOW(1);
733 /* Check for pending interrupt with expired latency timer: with
734 this, we can limp along even if the interrupt is blocked */
735 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
736 (inb(ioaddr + EL3_TIMER) == 0xff)) {
737 if (!lp->fast_poll)
738 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
7d12e780 739 el3_interrupt(dev->irq, lp);
1da177e4
LT		 740 lp->fast_poll = HZ;
741 }
742 if (lp->fast_poll) {
743 lp->fast_poll--;
744 lp->media.expires = jiffies + HZ/100;
745 add_timer(&lp->media);
746 return;
747 }
748
749 /* lp->lock guards the EL3 window. Window should always be 1 except
750 when the lock is held */
751 spin_lock_irqsave(&lp->lock, flags);
752 EL3WINDOW(4);
753 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
754
755 /* Ignore collisions unless we've had no irq's recently */
ff5688ae 756 if (time_before(jiffies, lp->last_irq + HZ)) {
1da177e4
LT		 757 media &= ~0x0010;
758 } else {
759 /* Try harder to detect carrier errors */
760 EL3WINDOW(6);
761 outw(StatsDisable, ioaddr + EL3_CMD);
762 errs = inb(ioaddr + 0);
763 outw(StatsEnable, ioaddr + EL3_CMD);
764 lp->stats.tx_carrier_errors += errs;
765 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
766 }
767
768 if (media != lp->media_status) {
769 if ((media & lp->media_status & 0x8000) &&
770 ((lp->media_status ^ media) & 0x0800))
771 printk(KERN_INFO "%s: %s link beat\n", dev->name,
772 (lp->media_status & 0x0800 ? "lost" : "found"));
773 else if ((media & lp->media_status & 0x4000) &&
774 ((lp->media_status ^ media) & 0x0010))
775 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
776 (lp->media_status & 0x0010 ? "ok" : "problem"));
777 if (dev->if_port == 0) {
778 if (media & 0x8000) {
779 if (media & 0x0800)
780 printk(KERN_INFO "%s: flipped to 10baseT\n",
781 dev->name);
782 else
783 tc589_set_xcvr(dev, 2);
784 } else if (media & 0x4000) {
785 if (media & 0x0010)
786 tc589_set_xcvr(dev, 1);
787 else
788 printk(KERN_INFO "%s: flipped to 10base2\n",
789 dev->name);
790 }
791 }
792 lp->media_status = media;
793 }
794
795 EL3WINDOW(1);
796 spin_unlock_irqrestore(&lp->lock, flags);
797
798reschedule:
799 lp->media.expires = jiffies + HZ;
800 add_timer(&lp->media);
801}
802
803static struct net_device_stats *el3_get_stats(struct net_device *dev)
804{
805 struct el3_private *lp = netdev_priv(dev);
806 unsigned long flags;
fba395ee 807 struct pcmcia_device *link = lp->p_dev;
1da177e4 808
9940ec36 809 if (pcmcia_dev_present(link)) {
1da177e4
LT		 810 spin_lock_irqsave(&lp->lock, flags);
811 update_stats(dev);
812 spin_unlock_irqrestore(&lp->lock, flags);
813 }
814 return &lp->stats;
815}
816
817/*
818 Update statistics. We change to register window 6, so this should be run
819 single-threaded if the device is active. This is expected to be a rare
820 operation, and it's simpler for the rest of the driver to assume that
821 window 1 is always valid rather than use a special window-state variable.
822
823 Caller must hold the lock for this
824*/
825static void update_stats(struct net_device *dev)
826{
827 struct el3_private *lp = netdev_priv(dev);
828 kio_addr_t ioaddr = dev->base_addr;
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);
835 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
836 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
837 /* Multiple collisions. */ inb(ioaddr + 2);
838 lp->stats.collisions += inb(ioaddr + 3);
839 lp->stats.tx_window_errors += inb(ioaddr + 4);
840 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
841 lp->stats.tx_packets += inb(ioaddr + 6);
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{
854 struct el3_private *lp = netdev_priv(dev);
855 kio_addr_t ioaddr = dev->base_addr;
856 int worklimit = 32;
857 short rx_status;
858
859 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
860 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
861 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
862 (--worklimit >= 0)) {
863 if (rx_status & 0x4000) { /* Error, update stats. */
864 short error = rx_status & 0x3800;
865 lp->stats.rx_errors++;
866 switch (error) {
867 case 0x0000: lp->stats.rx_over_errors++; break;
868 case 0x0800: lp->stats.rx_length_errors++; break;
869 case 0x1000: lp->stats.rx_frame_errors++; break;
870 case 0x1800: lp->stats.rx_length_errors++; break;
871 case 0x2000: lp->stats.rx_frame_errors++; break;
872 case 0x2800: lp->stats.rx_crc_errors++; break;
873 }
874 } else {
875 short pkt_len = rx_status & 0x7ff;
876 struct sk_buff *skb;
877
878 skb = dev_alloc_skb(pkt_len+5);
879
880 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
881 pkt_len, rx_status);
882 if (skb != NULL) {
883 skb->dev = dev;
884 skb_reserve(skb, 2);
885 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
886 (pkt_len+3)>>2);
887 skb->protocol = eth_type_trans(skb, dev);
888 netif_rx(skb);
889 dev->last_rx = jiffies;
890 lp->stats.rx_packets++;
891 lp->stats.rx_bytes += pkt_len;
892 } else {
893 DEBUG(1, "%s: couldn't allocate a sk_buff of"
894 " size %d.\n", dev->name, pkt_len);
895 lp->stats.rx_dropped++;
896 }
897 }
898 /* Pop the top of the Rx FIFO */
899 tc589_wait_for_completion(dev, RxDiscard);
900 }
901 if (worklimit == 0)
902 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
903 return 0;
904}
905
906static void set_multicast_list(struct net_device *dev)
907{
908 struct el3_private *lp = netdev_priv(dev);
fba395ee 909 struct pcmcia_device *link = lp->p_dev;
1da177e4
LT		 910 kio_addr_t ioaddr = dev->base_addr;
911 u16 opts = SetRxFilter | RxStation | RxBroadcast;
912
9940ec36 913 if (!pcmcia_dev_present(link)) return;
1da177e4
LT		 914 if (dev->flags & IFF_PROMISC)
915 opts |= RxMulticast | RxProm;
916 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
917 opts |= RxMulticast;
918 outw(opts, ioaddr + EL3_CMD);
919}
920
921static int el3_close(struct net_device *dev)
922{
923 struct el3_private *lp = netdev_priv(dev);
fba395ee 924 struct pcmcia_device *link = lp->p_dev;
1da177e4
LT		 925 kio_addr_t ioaddr = dev->base_addr;
926
927 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
928
9940ec36 929 if (pcmcia_dev_present(link)) {
1da177e4
LT		 930 /* Turn off statistics ASAP. We update lp->stats below. */
931 outw(StatsDisable, ioaddr + EL3_CMD);
932
933 /* Disable the receiver and transmitter. */
934 outw(RxDisable, ioaddr + EL3_CMD);
935 outw(TxDisable, ioaddr + EL3_CMD);
936
937 if (dev->if_port == 2)
938 /* Turn off thinnet power. Green! */
939 outw(StopCoax, ioaddr + EL3_CMD);
940 else if (dev->if_port == 1) {
941 /* Disable link beat and jabber */
942 EL3WINDOW(4);
943 outw(0, ioaddr + WN4_MEDIA);
944 }
945
946 /* Switching back to window 0 disables the IRQ. */
947 EL3WINDOW(0);
948 /* But we explicitly zero the IRQ line select anyway. */
949 outw(0x0f00, ioaddr + WN0_IRQ);
950
951 /* Check if the card still exists */
952 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
953 update_stats(dev);
954 }
955
956 link->open--;
957 netif_stop_queue(dev);
958 del_timer_sync(&lp->media);
959
960 return 0;
961}
962
7ffec58c
DB		 963static struct pcmcia_device_id tc589_ids[] = {
964 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
965 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
966 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
967 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
968 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
969 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
970 PCMCIA_DEVICE_NULL,
971};
972MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
973
1da177e4
LT		 974static struct pcmcia_driver tc589_driver = {
975 .owner = THIS_MODULE,
976 .drv = {
977 .name = "3c589_cs",
978 },
15b99ac1 979 .probe = tc589_probe,
cc3b4866 980 .remove = tc589_detach,
7ffec58c 981 .id_table = tc589_ids,
98e4c28b
DB		 982 .suspend = tc589_suspend,
983 .resume = tc589_resume,
1da177e4
LT		 984};
985
986static int __init init_tc589(void)
987{
988 return pcmcia_register_driver(&tc589_driver);
989}
990
991static void __exit exit_tc589(void)
992{
993 pcmcia_unregister_driver(&tc589_driver);
1da177e4
LT		 994}
995
996module_init(init_tc589);
997module_exit(exit_tc589);
kernel source for telekom puls (alcatel/mediatek)