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[PATCH] pcmcia: remove unused p_dev->state flags
[linux-block.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);
154static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs);
155static void update_stats(struct net_device *dev);
156static struct net_device_stats *el3_get_stats(struct net_device *dev);
157static int el3_rx(struct net_device *dev);
158static int el3_close(struct net_device *dev);
159static void el3_tx_timeout(struct net_device *dev);
160static void set_multicast_list(struct net_device *dev);
161static struct ethtool_ops netdev_ethtool_ops;
162
cc3b4866 163static void tc589_detach(struct pcmcia_device *p_dev);
1da177e4 164
1da177e4
LT		 165/*======================================================================
166
167 tc589_attach() creates an "instance" of the driver, allocating
168 local data structures for one device. The device is registered
169 with Card Services.
170
171======================================================================*/
172
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;
198 link->conf.Present = PRESENT_OPTION;
f8cfa618 199
1da177e4
LT		 200 /* The EL3-specific entries in the device structure. */
201 SET_MODULE_OWNER(dev);
202 dev->hard_start_xmit = &el3_start_xmit;
203 dev->set_config = &el3_config;
204 dev->get_stats = &el3_get_stats;
205 dev->set_multicast_list = &set_multicast_list;
206 dev->open = &el3_open;
207 dev->stop = &el3_close;
208#ifdef HAVE_TX_TIMEOUT
209 dev->tx_timeout = el3_tx_timeout;
210 dev->watchdog_timeo = TX_TIMEOUT;
211#endif
212 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
213
f8cfa618 214 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
15b99ac1 215 return tc589_config(link);
1da177e4
LT		 216} /* tc589_attach */
217
218/*======================================================================
219
220 This deletes a driver "instance". The device is de-registered
221 with Card Services. If it has been released, all local data
222 structures are freed. Otherwise, the structures will be freed
223 when the device is released.
224
225======================================================================*/
226
fba395ee 227static void tc589_detach(struct pcmcia_device *link)
1da177e4
LT		 228{
229 struct net_device *dev = link->priv;
b4635811 230
1da177e4 231 DEBUG(0, "3c589_detach(0x%p)\n", link);
1da177e4 232
fd238232 233 if (link->dev_node)
1da177e4
LT		 234 unregister_netdev(dev);
235
236 if (link->state & DEV_CONFIG)
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;
258 cisparse_t parse;
259 u16 buf[32], *phys_addr;
260 int last_fn, last_ret, i, j, multi = 0, fifo;
261 kio_addr_t ioaddr;
262 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
263
264 DEBUG(0, "3c589_config(0x%p)\n", link);
265
266 phys_addr = (u16 *)dev->dev_addr;
267 tuple.Attributes = 0;
268 tuple.DesiredTuple = CISTPL_CONFIG;
fba395ee 269 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
1da177e4
LT		 270 tuple.TupleData = (cisdata_t *)buf;
271 tuple.TupleDataMax = sizeof(buf);
272 tuple.TupleOffset = 0;
fba395ee
DB		 273 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
274 CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
1da177e4
LT		 275 link->conf.ConfigBase = parse.config.base;
276 link->conf.Present = parse.config.rmask[0];
277
278 /* Is this a 3c562? */
279 tuple.DesiredTuple = CISTPL_MANFID;
280 tuple.Attributes = TUPLE_RETURN_COMMON;
fba395ee
DB		 281 if ((pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) &&
282 (pcmcia_get_tuple_data(link, &tuple) == CS_SUCCESS)) {
1da177e4
LT		 283 if (le16_to_cpu(buf[0]) != MANFID_3COM)
284 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
285 "3Com card??\n");
286 multi = (le16_to_cpu(buf[1]) == PRODID_3COM_3C562);
287 }
288
289 /* Configure card */
290 link->state |= DEV_CONFIG;
291
292 /* For the 3c562, the base address must be xx00-xx7f */
293 link->io.IOAddrLines = 16;
294 for (i = j = 0; j < 0x400; j += 0x10) {
295 if (multi && (j & 0x80)) continue;
296 link->io.BasePort1 = j ^ 0x300;
fba395ee 297 i = pcmcia_request_io(link, &link->io);
1da177e4
LT		 298 if (i == CS_SUCCESS) break;
299 }
300 if (i != CS_SUCCESS) {
fba395ee 301 cs_error(link, RequestIO, i);
1da177e4
LT		 302 goto failed;
303 }
fba395ee
DB		 304 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
305 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1da177e4
LT		 306
307 dev->irq = link->irq.AssignedIRQ;
308 dev->base_addr = link->io.BasePort1;
309 ioaddr = dev->base_addr;
310 EL3WINDOW(0);
311
312 /* The 3c589 has an extra EEPROM for configuration info, including
313 the hardware address. The 3c562 puts the address in the CIS. */
314 tuple.DesiredTuple = 0x88;
fba395ee
DB		 315 if (pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) {
316 pcmcia_get_tuple_data(link, &tuple);
1da177e4
LT		 317 for (i = 0; i < 3; i++)
318 phys_addr[i] = htons(buf[i]);
319 } else {
320 for (i = 0; i < 3; i++)
321 phys_addr[i] = htons(read_eeprom(ioaddr, i));
322 if (phys_addr[0] == 0x6060) {
323 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
324 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
325 goto failed;
326 }
327 }
328
329 /* The address and resource configuration register aren't loaded from
330 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
331 outw(0x3f00, ioaddr + 8);
332 fifo = inl(ioaddr);
333
334 /* The if_port symbol can be set when the module is loaded */
335 if ((if_port >= 0) && (if_port <= 3))
336 dev->if_port = if_port;
337 else
338 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
339
fd238232 340 link->dev_node = &lp->node;
1da177e4 341 link->state &= ~DEV_CONFIG_PENDING;
fba395ee 342 SET_NETDEV_DEV(dev, &handle_to_dev(link));
1da177e4
LT		 343
344 if (register_netdev(dev) != 0) {
345 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
fd238232 346 link->dev_node = NULL;
1da177e4
LT		 347 goto failed;
348 }
349
350 strcpy(lp->node.dev_name, dev->name);
351
352 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
353 dev->name, (multi ? "562" : "589"), dev->base_addr,
354 dev->irq);
355 for (i = 0; i < 6; i++)
356 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
357 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
358 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
359 if_names[dev->if_port]);
15b99ac1 360 return 0;
1da177e4
LT		 361
362cs_failed:
fba395ee 363 cs_error(link, last_fn, last_ret);
1da177e4
LT		 364failed:
365 tc589_release(link);
15b99ac1 366 return -ENODEV;
1da177e4
LT		 367} /* tc589_config */
368
369/*======================================================================
370
371 After a card is removed, tc589_release() will unregister the net
372 device, and release the PCMCIA configuration. If the device is
373 still open, this will be postponed until it is closed.
374
375======================================================================*/
376
fba395ee 377static void tc589_release(struct pcmcia_device *link)
1da177e4 378{
fba395ee 379 pcmcia_disable_device(link);
1da177e4
LT		 380}
381
fba395ee 382static int tc589_suspend(struct pcmcia_device *link)
98e4c28b 383{
98e4c28b
DB		 384 struct net_device *dev = link->priv;
385
8661bb5b
DB		 386 if ((link->state & DEV_CONFIG) && (link->open))
387 netif_device_detach(dev);
98e4c28b
DB		 388
389 return 0;
390}
391
fba395ee 392static int tc589_resume(struct pcmcia_device *link)
98e4c28b 393{
98e4c28b
DB		 394 struct net_device *dev = link->priv;
395
8661bb5b
DB		 396 if ((link->state & DEV_CONFIG) && (link->open)) {
397 tc589_reset(dev);
398 netif_device_attach(dev);
98e4c28b
DB		 399 }
400
401 return 0;
402}
403
1da177e4
LT		 404/*====================================================================*/
405
406/*
407 Use this for commands that may take time to finish
408*/
409static void tc589_wait_for_completion(struct net_device *dev, int cmd)
410{
411 int i = 100;
412 outw(cmd, dev->base_addr + EL3_CMD);
413 while (--i > 0)
414 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
415 if (i == 0)
416 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
417 dev->name, cmd);
418}
419
420/*
421 Read a word from the EEPROM using the regular EEPROM access register.
422 Assume that we are in register window zero.
423*/
424static u16 read_eeprom(kio_addr_t ioaddr, int index)
425{
426 int i;
427 outw(EEPROM_READ + index, ioaddr + 10);
428 /* Reading the eeprom takes 162 us */
429 for (i = 1620; i >= 0; i--)
430 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
431 break;
432 return inw(ioaddr + 12);
433}
434
435/*
436 Set transceiver type, perhaps to something other than what the user
437 specified in dev->if_port.
438*/
439static void tc589_set_xcvr(struct net_device *dev, int if_port)
440{
441 struct el3_private *lp = netdev_priv(dev);
442 kio_addr_t ioaddr = dev->base_addr;
443
444 EL3WINDOW(0);
445 switch (if_port) {
446 case 0: case 1: outw(0, ioaddr + 6); break;
447 case 2: outw(3<<14, ioaddr + 6); break;
448 case 3: outw(1<<14, ioaddr + 6); break;
449 }
450 /* On PCMCIA, this just turns on the LED */
451 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
452 /* 10baseT interface, enable link beat and jabber check. */
453 EL3WINDOW(4);
454 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
455 EL3WINDOW(1);
456 if (if_port == 2)
457 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
458 else
459 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
460}
461
462static void dump_status(struct net_device *dev)
463{
464 kio_addr_t ioaddr = dev->base_addr;
465 EL3WINDOW(1);
466 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
467 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
468 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
469 inw(ioaddr+TX_FREE));
470 EL3WINDOW(4);
471 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
472 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
473 inw(ioaddr+0x08), inw(ioaddr+0x0a));
474 EL3WINDOW(1);
475}
476
477/* Reset and restore all of the 3c589 registers. */
478static void tc589_reset(struct net_device *dev)
479{
480 kio_addr_t ioaddr = dev->base_addr;
481 int i;
482
483 EL3WINDOW(0);
484 outw(0x0001, ioaddr + 4); /* Activate board. */
485 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
486
487 /* Set the station address in window 2. */
488 EL3WINDOW(2);
489 for (i = 0; i < 6; i++)
490 outb(dev->dev_addr[i], ioaddr + i);
491
492 tc589_set_xcvr(dev, dev->if_port);
493
494 /* Switch to the stats window, and clear all stats by reading. */
495 outw(StatsDisable, ioaddr + EL3_CMD);
496 EL3WINDOW(6);
497 for (i = 0; i < 9; i++)
498 inb(ioaddr+i);
499 inw(ioaddr + 10);
500 inw(ioaddr + 12);
501
502 /* Switch to register set 1 for normal use. */
503 EL3WINDOW(1);
504
505 /* Accept b-cast and phys addr only. */
506 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
507 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
508 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
509 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
510 /* Allow status bits to be seen. */
511 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
512 /* Ack all pending events, and set active indicator mask. */
513 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
514 ioaddr + EL3_CMD);
515 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
516 | AdapterFailure, ioaddr + EL3_CMD);
517}
518
519static void netdev_get_drvinfo(struct net_device *dev,
520 struct ethtool_drvinfo *info)
521{
522 strcpy(info->driver, DRV_NAME);
523 strcpy(info->version, DRV_VERSION);
524 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
525}
526
527#ifdef PCMCIA_DEBUG
528static u32 netdev_get_msglevel(struct net_device *dev)
529{
530 return pc_debug;
531}
532
533static void netdev_set_msglevel(struct net_device *dev, u32 level)
534{
535 pc_debug = level;
536}
537#endif /* PCMCIA_DEBUG */
538
539static struct ethtool_ops netdev_ethtool_ops = {
540 .get_drvinfo = netdev_get_drvinfo,
541#ifdef PCMCIA_DEBUG
542 .get_msglevel = netdev_get_msglevel,
543 .set_msglevel = netdev_set_msglevel,
544#endif /* PCMCIA_DEBUG */
545};
546
547static int el3_config(struct net_device *dev, struct ifmap *map)
548{
549 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
550 if (map->port <= 3) {
551 dev->if_port = map->port;
552 printk(KERN_INFO "%s: switched to %s port\n",
553 dev->name, if_names[dev->if_port]);
554 tc589_set_xcvr(dev, dev->if_port);
555 } else
556 return -EINVAL;
557 }
558 return 0;
559}
560
561static int el3_open(struct net_device *dev)
562{
563 struct el3_private *lp = netdev_priv(dev);
fba395ee 564 struct pcmcia_device *link = lp->p_dev;
1da177e4
LT		 565
566 if (!DEV_OK(link))
567 return -ENODEV;
568
569 link->open++;
570 netif_start_queue(dev);
571
572 tc589_reset(dev);
573 init_timer(&lp->media);
574 lp->media.function = &media_check;
575 lp->media.data = (unsigned long) dev;
576 lp->media.expires = jiffies + HZ;
577 add_timer(&lp->media);
578
579 DEBUG(1, "%s: opened, status %4.4x.\n",
580 dev->name, inw(dev->base_addr + EL3_STATUS));
581
582 return 0;
583}
584
585static void el3_tx_timeout(struct net_device *dev)
586{
587 struct el3_private *lp = netdev_priv(dev);
588 kio_addr_t ioaddr = dev->base_addr;
589
590 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
591 dump_status(dev);
592 lp->stats.tx_errors++;
593 dev->trans_start = jiffies;
594 /* Issue TX_RESET and TX_START commands. */
595 tc589_wait_for_completion(dev, TxReset);
596 outw(TxEnable, ioaddr + EL3_CMD);
597 netif_wake_queue(dev);
598}
599
600static void pop_tx_status(struct net_device *dev)
601{
602 struct el3_private *lp = netdev_priv(dev);
603 kio_addr_t ioaddr = dev->base_addr;
604 int i;
605
606 /* Clear the Tx status stack. */
607 for (i = 32; i > 0; i--) {
608 u_char tx_status = inb(ioaddr + TX_STATUS);
609 if (!(tx_status & 0x84)) break;
610 /* reset transmitter on jabber error or underrun */
611 if (tx_status & 0x30)
612 tc589_wait_for_completion(dev, TxReset);
613 if (tx_status & 0x38) {
614 DEBUG(1, "%s: transmit error: status 0x%02x\n",
615 dev->name, tx_status);
616 outw(TxEnable, ioaddr + EL3_CMD);
617 lp->stats.tx_aborted_errors++;
618 }
619 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
620 }
621}
622
623static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
624{
625 kio_addr_t ioaddr = dev->base_addr;
626 struct el3_private *priv = netdev_priv(dev);
627
628 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
629 "status %4.4x.\n", dev->name, (long)skb->len,
630 inw(ioaddr + EL3_STATUS));
631
632 priv->stats.tx_bytes += skb->len;
633
634 /* Put out the doubleword header... */
635 outw(skb->len, ioaddr + TX_FIFO);
636 outw(0x00, ioaddr + TX_FIFO);
637 /* ... and the packet rounded to a doubleword. */
638 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
639
640 dev->trans_start = jiffies;
641 if (inw(ioaddr + TX_FREE) <= 1536) {
642 netif_stop_queue(dev);
643 /* Interrupt us when the FIFO has room for max-sized packet. */
644 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
645 }
646
647 dev_kfree_skb(skb);
648 pop_tx_status(dev);
649
650 return 0;
651}
652
653/* The EL3 interrupt handler. */
654static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
655{
656 struct net_device *dev = (struct net_device *) dev_id;
657 struct el3_private *lp = netdev_priv(dev);
658 kio_addr_t ioaddr;
659 __u16 status;
660 int i = 0, handled = 1;
661
662 if (!netif_device_present(dev))
663 return IRQ_NONE;
664
665 ioaddr = dev->base_addr;
666
667 DEBUG(3, "%s: interrupt, status %4.4x.\n",
668 dev->name, inw(ioaddr + EL3_STATUS));
669
670 spin_lock(&lp->lock);
671 while ((status = inw(ioaddr + EL3_STATUS)) &
672 (IntLatch | RxComplete | StatsFull)) {
673 if ((status & 0xe000) != 0x2000) {
674 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
675 handled = 0;
676 break;
677 }
678
679 if (status & RxComplete)
680 el3_rx(dev);
681
682 if (status & TxAvailable) {
683 DEBUG(3, " TX room bit was handled.\n");
684 /* There's room in the FIFO for a full-sized packet. */
685 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
686 netif_wake_queue(dev);
687 }
688
689 if (status & TxComplete)
690 pop_tx_status(dev);
691
692 if (status & (AdapterFailure | RxEarly | StatsFull)) {
693 /* Handle all uncommon interrupts. */
694 if (status & StatsFull) /* Empty statistics. */
695 update_stats(dev);
696 if (status & RxEarly) { /* Rx early is unused. */
697 el3_rx(dev);
698 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
699 }
700 if (status & AdapterFailure) {
701 u16 fifo_diag;
702 EL3WINDOW(4);
703 fifo_diag = inw(ioaddr + 4);
704 EL3WINDOW(1);
705 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
706 " register %04x.\n", dev->name, fifo_diag);
707 if (fifo_diag & 0x0400) {
708 /* Tx overrun */
709 tc589_wait_for_completion(dev, TxReset);
710 outw(TxEnable, ioaddr + EL3_CMD);
711 }
712 if (fifo_diag & 0x2000) {
713 /* Rx underrun */
714 tc589_wait_for_completion(dev, RxReset);
715 set_multicast_list(dev);
716 outw(RxEnable, ioaddr + EL3_CMD);
717 }
718 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
719 }
720 }
721
722 if (++i > 10) {
723 printk(KERN_ERR "%s: infinite loop in interrupt, "
724 "status %4.4x.\n", dev->name, status);
725 /* Clear all interrupts */
726 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
727 break;
728 }
729 /* Acknowledge the IRQ. */
730 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
731 }
732
733 lp->last_irq = jiffies;
734 spin_unlock(&lp->lock);
735 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
736 dev->name, inw(ioaddr + EL3_STATUS));
737 return IRQ_RETVAL(handled);
738}
739
740static void media_check(unsigned long arg)
741{
742 struct net_device *dev = (struct net_device *)(arg);
743 struct el3_private *lp = netdev_priv(dev);
744 kio_addr_t ioaddr = dev->base_addr;
745 u16 media, errs;
746 unsigned long flags;
747
748 if (!netif_device_present(dev)) goto reschedule;
749
750 EL3WINDOW(1);
751 /* Check for pending interrupt with expired latency timer: with
752 this, we can limp along even if the interrupt is blocked */
753 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
754 (inb(ioaddr + EL3_TIMER) == 0xff)) {
755 if (!lp->fast_poll)
756 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
757 el3_interrupt(dev->irq, lp, NULL);
758 lp->fast_poll = HZ;
759 }
760 if (lp->fast_poll) {
761 lp->fast_poll--;
762 lp->media.expires = jiffies + HZ/100;
763 add_timer(&lp->media);
764 return;
765 }
766
767 /* lp->lock guards the EL3 window. Window should always be 1 except
768 when the lock is held */
769 spin_lock_irqsave(&lp->lock, flags);
770 EL3WINDOW(4);
771 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
772
773 /* Ignore collisions unless we've had no irq's recently */
ff5688ae 774 if (time_before(jiffies, lp->last_irq + HZ)) {
1da177e4
LT		 775 media &= ~0x0010;
776 } else {
777 /* Try harder to detect carrier errors */
778 EL3WINDOW(6);
779 outw(StatsDisable, ioaddr + EL3_CMD);
780 errs = inb(ioaddr + 0);
781 outw(StatsEnable, ioaddr + EL3_CMD);
782 lp->stats.tx_carrier_errors += errs;
783 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
784 }
785
786 if (media != lp->media_status) {
787 if ((media & lp->media_status & 0x8000) &&
788 ((lp->media_status ^ media) & 0x0800))
789 printk(KERN_INFO "%s: %s link beat\n", dev->name,
790 (lp->media_status & 0x0800 ? "lost" : "found"));
791 else if ((media & lp->media_status & 0x4000) &&
792 ((lp->media_status ^ media) & 0x0010))
793 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
794 (lp->media_status & 0x0010 ? "ok" : "problem"));
795 if (dev->if_port == 0) {
796 if (media & 0x8000) {
797 if (media & 0x0800)
798 printk(KERN_INFO "%s: flipped to 10baseT\n",
799 dev->name);
800 else
801 tc589_set_xcvr(dev, 2);
802 } else if (media & 0x4000) {
803 if (media & 0x0010)
804 tc589_set_xcvr(dev, 1);
805 else
806 printk(KERN_INFO "%s: flipped to 10base2\n",
807 dev->name);
808 }
809 }
810 lp->media_status = media;
811 }
812
813 EL3WINDOW(1);
814 spin_unlock_irqrestore(&lp->lock, flags);
815
816reschedule:
817 lp->media.expires = jiffies + HZ;
818 add_timer(&lp->media);
819}
820
821static struct net_device_stats *el3_get_stats(struct net_device *dev)
822{
823 struct el3_private *lp = netdev_priv(dev);
824 unsigned long flags;
fba395ee 825 struct pcmcia_device *link = lp->p_dev;
1da177e4
LT		 826
827 if (DEV_OK(link)) {
828 spin_lock_irqsave(&lp->lock, flags);
829 update_stats(dev);
830 spin_unlock_irqrestore(&lp->lock, flags);
831 }
832 return &lp->stats;
833}
834
835/*
836 Update statistics. We change to register window 6, so this should be run
837 single-threaded if the device is active. This is expected to be a rare
838 operation, and it's simpler for the rest of the driver to assume that
839 window 1 is always valid rather than use a special window-state variable.
840
841 Caller must hold the lock for this
842*/
843static void update_stats(struct net_device *dev)
844{
845 struct el3_private *lp = netdev_priv(dev);
846 kio_addr_t ioaddr = dev->base_addr;
847
848 DEBUG(2, "%s: updating the statistics.\n", dev->name);
849 /* Turn off statistics updates while reading. */
850 outw(StatsDisable, ioaddr + EL3_CMD);
851 /* Switch to the stats window, and read everything. */
852 EL3WINDOW(6);
853 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
854 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
855 /* Multiple collisions. */ inb(ioaddr + 2);
856 lp->stats.collisions += inb(ioaddr + 3);
857 lp->stats.tx_window_errors += inb(ioaddr + 4);
858 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
859 lp->stats.tx_packets += inb(ioaddr + 6);
860 /* Rx packets */ inb(ioaddr + 7);
861 /* Tx deferrals */ inb(ioaddr + 8);
862 /* Rx octets */ inw(ioaddr + 10);
863 /* Tx octets */ inw(ioaddr + 12);
864
865 /* Back to window 1, and turn statistics back on. */
866 EL3WINDOW(1);
867 outw(StatsEnable, ioaddr + EL3_CMD);
868}
869
870static int el3_rx(struct net_device *dev)
871{
872 struct el3_private *lp = netdev_priv(dev);
873 kio_addr_t ioaddr = dev->base_addr;
874 int worklimit = 32;
875 short rx_status;
876
877 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
878 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
879 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
880 (--worklimit >= 0)) {
881 if (rx_status & 0x4000) { /* Error, update stats. */
882 short error = rx_status & 0x3800;
883 lp->stats.rx_errors++;
884 switch (error) {
885 case 0x0000: lp->stats.rx_over_errors++; break;
886 case 0x0800: lp->stats.rx_length_errors++; break;
887 case 0x1000: lp->stats.rx_frame_errors++; break;
888 case 0x1800: lp->stats.rx_length_errors++; break;
889 case 0x2000: lp->stats.rx_frame_errors++; break;
890 case 0x2800: lp->stats.rx_crc_errors++; break;
891 }
892 } else {
893 short pkt_len = rx_status & 0x7ff;
894 struct sk_buff *skb;
895
896 skb = dev_alloc_skb(pkt_len+5);
897
898 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
899 pkt_len, rx_status);
900 if (skb != NULL) {
901 skb->dev = dev;
902 skb_reserve(skb, 2);
903 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
904 (pkt_len+3)>>2);
905 skb->protocol = eth_type_trans(skb, dev);
906 netif_rx(skb);
907 dev->last_rx = jiffies;
908 lp->stats.rx_packets++;
909 lp->stats.rx_bytes += pkt_len;
910 } else {
911 DEBUG(1, "%s: couldn't allocate a sk_buff of"
912 " size %d.\n", dev->name, pkt_len);
913 lp->stats.rx_dropped++;
914 }
915 }
916 /* Pop the top of the Rx FIFO */
917 tc589_wait_for_completion(dev, RxDiscard);
918 }
919 if (worklimit == 0)
920 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
921 return 0;
922}
923
924static void set_multicast_list(struct net_device *dev)
925{
926 struct el3_private *lp = netdev_priv(dev);
fba395ee 927 struct pcmcia_device *link = lp->p_dev;
1da177e4
LT		 928 kio_addr_t ioaddr = dev->base_addr;
929 u16 opts = SetRxFilter | RxStation | RxBroadcast;
930
931 if (!(DEV_OK(link))) return;
932 if (dev->flags & IFF_PROMISC)
933 opts |= RxMulticast | RxProm;
934 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
935 opts |= RxMulticast;
936 outw(opts, ioaddr + EL3_CMD);
937}
938
939static int el3_close(struct net_device *dev)
940{
941 struct el3_private *lp = netdev_priv(dev);
fba395ee 942 struct pcmcia_device *link = lp->p_dev;
1da177e4
LT		 943 kio_addr_t ioaddr = dev->base_addr;
944
945 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
946
947 if (DEV_OK(link)) {
948 /* Turn off statistics ASAP. We update lp->stats below. */
949 outw(StatsDisable, ioaddr + EL3_CMD);
950
951 /* Disable the receiver and transmitter. */
952 outw(RxDisable, ioaddr + EL3_CMD);
953 outw(TxDisable, ioaddr + EL3_CMD);
954
955 if (dev->if_port == 2)
956 /* Turn off thinnet power. Green! */
957 outw(StopCoax, ioaddr + EL3_CMD);
958 else if (dev->if_port == 1) {
959 /* Disable link beat and jabber */
960 EL3WINDOW(4);
961 outw(0, ioaddr + WN4_MEDIA);
962 }
963
964 /* Switching back to window 0 disables the IRQ. */
965 EL3WINDOW(0);
966 /* But we explicitly zero the IRQ line select anyway. */
967 outw(0x0f00, ioaddr + WN0_IRQ);
968
969 /* Check if the card still exists */
970 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
971 update_stats(dev);
972 }
973
974 link->open--;
975 netif_stop_queue(dev);
976 del_timer_sync(&lp->media);
977
978 return 0;
979}
980
7ffec58c
DB		 981static struct pcmcia_device_id tc589_ids[] = {
982 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
983 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
984 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
985 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
986 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
987 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
988 PCMCIA_DEVICE_NULL,
989};
990MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
991
1da177e4
LT		 992static struct pcmcia_driver tc589_driver = {
993 .owner = THIS_MODULE,
994 .drv = {
995 .name = "3c589_cs",
996 },
15b99ac1 997 .probe = tc589_probe,
cc3b4866 998 .remove = tc589_detach,
7ffec58c 999 .id_table = tc589_ids,
98e4c28b
DB		 1000 .suspend = tc589_suspend,
1001 .resume = tc589_resume,
1da177e4
LT		 1002};
1003
1004static int __init init_tc589(void)
1005{
1006 return pcmcia_register_driver(&tc589_driver);
1007}
1008
1009static void __exit exit_tc589(void)
1010{
1011 pcmcia_unregister_driver(&tc589_driver);
1da177e4
LT		 1012}
1013
1014module_init(init_tc589);
1015module_exit(exit_tc589);
Linux 6.x block layer and io_uring tree(s)