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hdlc: convert to netdev_tx_t
[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);
e445bb4e 159static void set_rx_mode(struct net_device *dev);
1da177e4 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
97161d4b
SH		 173static const struct net_device_ops el3_netdev_ops = {
174 .ndo_open = el3_open,
175 .ndo_stop = el3_close,
176 .ndo_start_xmit = el3_start_xmit,
177 .ndo_tx_timeout = el3_tx_timeout,
178 .ndo_set_config = el3_config,
179 .ndo_get_stats = el3_get_stats,
180 .ndo_set_multicast_list = set_multicast_list,
181 .ndo_change_mtu = eth_change_mtu,
182 .ndo_set_mac_address = eth_mac_addr,
183 .ndo_validate_addr = eth_validate_addr,
184};
185
15b99ac1 186static int tc589_probe(struct pcmcia_device *link)
1da177e4
LT		 187{
188 struct el3_private *lp;
1da177e4 189 struct net_device *dev;
1da177e4
LT		 190
191 DEBUG(0, "3c589_attach()\n");
f8cfa618 192
1da177e4
LT		 193 /* Create new ethernet device */
194 dev = alloc_etherdev(sizeof(struct el3_private));
195 if (!dev)
f8cfa618 196 return -ENOMEM;
1da177e4 197 lp = netdev_priv(dev);
1da177e4 198 link->priv = dev;
fba395ee 199 lp->p_dev = link;
1da177e4
LT		 200
201 spin_lock_init(&lp->lock);
202 link->io.NumPorts1 = 16;
203 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
5e7bf8cc 204 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_HANDLE_PRESENT;
1da177e4
LT		 205 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
206 link->irq.Handler = &el3_interrupt;
207 link->irq.Instance = dev;
208 link->conf.Attributes = CONF_ENABLE_IRQ;
1da177e4
LT		 209 link->conf.IntType = INT_MEMORY_AND_IO;
210 link->conf.ConfigIndex = 1;
f8cfa618 211
97161d4b 212 dev->netdev_ops = &el3_netdev_ops;
1da177e4 213 dev->watchdog_timeo = TX_TIMEOUT;
97161d4b 214
1da177e4
LT		 215 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
216
15b99ac1 217 return tc589_config(link);
1da177e4
LT		 218} /* tc589_attach */
219
220/*======================================================================
221
222 This deletes a driver "instance". The device is de-registered
223 with Card Services. If it has been released, all local data
224 structures are freed. Otherwise, the structures will be freed
225 when the device is released.
226
227======================================================================*/
228
fba395ee 229static void tc589_detach(struct pcmcia_device *link)
1da177e4
LT		 230{
231 struct net_device *dev = link->priv;
b4635811 232
1da177e4 233 DEBUG(0, "3c589_detach(0x%p)\n", link);
1da177e4 234
fd238232 235 if (link->dev_node)
1da177e4
LT		 236 unregister_netdev(dev);
237
e2d40963 238 tc589_release(link);
cc3b4866 239
1da177e4
LT		 240 free_netdev(dev);
241} /* tc589_detach */
242
243/*======================================================================
244
245 tc589_config() is scheduled to run after a CARD_INSERTION event
246 is received, to configure the PCMCIA socket, and to make the
247 ethernet device available to the system.
248
249======================================================================*/
250
251#define CS_CHECK(fn, ret) \
252do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
253
15b99ac1 254static int tc589_config(struct pcmcia_device *link)
1da177e4 255{
1da177e4
LT		 256 struct net_device *dev = link->priv;
257 struct el3_private *lp = netdev_priv(dev);
258 tuple_t tuple;
b1e247ad
AV		 259 __le16 buf[32];
260 __be16 *phys_addr;
1da177e4 261 int last_fn, last_ret, i, j, multi = 0, fifo;
906da809 262 unsigned int ioaddr;
1da177e4
LT		 263 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
264
265 DEBUG(0, "3c589_config(0x%p)\n", link);
266
b1e247ad 267 phys_addr = (__be16 *)dev->dev_addr;
1da177e4 268 tuple.Attributes = 0;
1da177e4
LT		 269 tuple.TupleData = (cisdata_t *)buf;
270 tuple.TupleDataMax = sizeof(buf);
271 tuple.TupleOffset = 0;
1da177e4 272 tuple.Attributes = TUPLE_RETURN_COMMON;
efd50585
DB		 273
274 /* Is this a 3c562? */
275 if (link->manf_id != MANFID_3COM)
1da177e4
LT		 276 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
277 "3Com card??\n");
efd50585 278 multi = (link->card_id == PRODID_3COM_3C562);
1da177e4
LT		 279
280 /* For the 3c562, the base address must be xx00-xx7f */
281 link->io.IOAddrLines = 16;
282 for (i = j = 0; j < 0x400; j += 0x10) {
283 if (multi && (j & 0x80)) continue;
284 link->io.BasePort1 = j ^ 0x300;
fba395ee 285 i = pcmcia_request_io(link, &link->io);
4c89e88b
DB		 286 if (i == 0)
287 break;
1da177e4 288 }
4c89e88b 289 if (i != 0) {
fba395ee 290 cs_error(link, RequestIO, i);
1da177e4
LT		 291 goto failed;
292 }
fba395ee
DB		 293 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
294 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
1da177e4
LT		 295
296 dev->irq = link->irq.AssignedIRQ;
297 dev->base_addr = link->io.BasePort1;
298 ioaddr = dev->base_addr;
299 EL3WINDOW(0);
300
301 /* The 3c589 has an extra EEPROM for configuration info, including
302 the hardware address. The 3c562 puts the address in the CIS. */
303 tuple.DesiredTuple = 0x88;
4c89e88b 304 if (pcmcia_get_first_tuple(link, &tuple) == 0) {
fba395ee 305 pcmcia_get_tuple_data(link, &tuple);
1da177e4 306 for (i = 0; i < 3; i++)
b1e247ad 307 phys_addr[i] = htons(le16_to_cpu(buf[i]));
1da177e4
LT		 308 } else {
309 for (i = 0; i < 3; i++)
310 phys_addr[i] = htons(read_eeprom(ioaddr, i));
b1e247ad 311 if (phys_addr[0] == htons(0x6060)) {
1da177e4
LT		 312 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
313 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
314 goto failed;
315 }
316 }
317
318 /* The address and resource configuration register aren't loaded from
319 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
320 outw(0x3f00, ioaddr + 8);
321 fifo = inl(ioaddr);
322
323 /* The if_port symbol can be set when the module is loaded */
324 if ((if_port >= 0) && (if_port <= 3))
325 dev->if_port = if_port;
326 else
327 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
328
fd238232 329 link->dev_node = &lp->node;
fba395ee 330 SET_NETDEV_DEV(dev, &handle_to_dev(link));
1da177e4
LT		 331
332 if (register_netdev(dev) != 0) {
333 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
fd238232 334 link->dev_node = NULL;
1da177e4
LT		 335 goto failed;
336 }
337
338 strcpy(lp->node.dev_name, dev->name);
339
0795af57 340 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, "
e174961c 341 "hw_addr %pM\n",
0795af57 342 dev->name, (multi ? "562" : "589"), dev->base_addr, dev->irq,
e174961c 343 dev->dev_addr);
1da177e4
LT		 344 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
345 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
346 if_names[dev->if_port]);
15b99ac1 347 return 0;
1da177e4
LT		 348
349cs_failed:
fba395ee 350 cs_error(link, last_fn, last_ret);
1da177e4
LT		 351failed:
352 tc589_release(link);
15b99ac1 353 return -ENODEV;
1da177e4
LT		 354} /* tc589_config */
355
356/*======================================================================
357
358 After a card is removed, tc589_release() will unregister the net
359 device, and release the PCMCIA configuration. If the device is
360 still open, this will be postponed until it is closed.
361
362======================================================================*/
363
fba395ee 364static void tc589_release(struct pcmcia_device *link)
1da177e4 365{
fba395ee 366 pcmcia_disable_device(link);
1da177e4
LT		 367}
368
fba395ee 369static int tc589_suspend(struct pcmcia_device *link)
98e4c28b 370{
98e4c28b
DB		 371 struct net_device *dev = link->priv;
372
e2d40963 373 if (link->open)
8661bb5b 374 netif_device_detach(dev);
98e4c28b
DB		 375
376 return 0;
377}
378
fba395ee 379static int tc589_resume(struct pcmcia_device *link)
98e4c28b 380{
98e4c28b
DB		 381 struct net_device *dev = link->priv;
382
e2d40963 383 if (link->open) {
8661bb5b
DB		 384 tc589_reset(dev);
385 netif_device_attach(dev);
98e4c28b
DB		 386 }
387
388 return 0;
389}
390
1da177e4
LT		 391/*====================================================================*/
392
393/*
394 Use this for commands that may take time to finish
395*/
396static void tc589_wait_for_completion(struct net_device *dev, int cmd)
397{
398 int i = 100;
399 outw(cmd, dev->base_addr + EL3_CMD);
400 while (--i > 0)
401 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
402 if (i == 0)
403 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
404 dev->name, cmd);
405}
406
407/*
408 Read a word from the EEPROM using the regular EEPROM access register.
409 Assume that we are in register window zero.
410*/
906da809 411static u16 read_eeprom(unsigned int ioaddr, int index)
1da177e4
LT		 412{
413 int i;
414 outw(EEPROM_READ + index, ioaddr + 10);
415 /* Reading the eeprom takes 162 us */
416 for (i = 1620; i >= 0; i--)
417 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
418 break;
419 return inw(ioaddr + 12);
420}
421
422/*
423 Set transceiver type, perhaps to something other than what the user
424 specified in dev->if_port.
425*/
426static void tc589_set_xcvr(struct net_device *dev, int if_port)
427{
428 struct el3_private *lp = netdev_priv(dev);
906da809 429 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 430
431 EL3WINDOW(0);
432 switch (if_port) {
433 case 0: case 1: outw(0, ioaddr + 6); break;
434 case 2: outw(3<<14, ioaddr + 6); break;
435 case 3: outw(1<<14, ioaddr + 6); break;
436 }
437 /* On PCMCIA, this just turns on the LED */
438 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
439 /* 10baseT interface, enable link beat and jabber check. */
440 EL3WINDOW(4);
441 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
442 EL3WINDOW(1);
443 if (if_port == 2)
444 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
445 else
446 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
447}
448
449static void dump_status(struct net_device *dev)
450{
906da809 451 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 452 EL3WINDOW(1);
453 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
454 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
455 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
456 inw(ioaddr+TX_FREE));
457 EL3WINDOW(4);
458 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
459 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
460 inw(ioaddr+0x08), inw(ioaddr+0x0a));
461 EL3WINDOW(1);
462}
463
464/* Reset and restore all of the 3c589 registers. */
465static void tc589_reset(struct net_device *dev)
466{
906da809 467 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 468 int i;
469
470 EL3WINDOW(0);
471 outw(0x0001, ioaddr + 4); /* Activate board. */
472 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
473
474 /* Set the station address in window 2. */
475 EL3WINDOW(2);
476 for (i = 0; i < 6; i++)
477 outb(dev->dev_addr[i], ioaddr + i);
478
479 tc589_set_xcvr(dev, dev->if_port);
480
481 /* Switch to the stats window, and clear all stats by reading. */
482 outw(StatsDisable, ioaddr + EL3_CMD);
483 EL3WINDOW(6);
484 for (i = 0; i < 9; i++)
485 inb(ioaddr+i);
486 inw(ioaddr + 10);
487 inw(ioaddr + 12);
488
489 /* Switch to register set 1 for normal use. */
490 EL3WINDOW(1);
491
e445bb4e 492 set_rx_mode(dev);
1da177e4
LT		 493 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
494 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
495 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
496 /* Allow status bits to be seen. */
497 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
498 /* Ack all pending events, and set active indicator mask. */
499 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
500 ioaddr + EL3_CMD);
501 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
502 | AdapterFailure, ioaddr + EL3_CMD);
503}
504
505static void netdev_get_drvinfo(struct net_device *dev,
506 struct ethtool_drvinfo *info)
507{
508 strcpy(info->driver, DRV_NAME);
509 strcpy(info->version, DRV_VERSION);
510 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
511}
512
513#ifdef PCMCIA_DEBUG
514static u32 netdev_get_msglevel(struct net_device *dev)
515{
516 return pc_debug;
517}
518
519static void netdev_set_msglevel(struct net_device *dev, u32 level)
520{
521 pc_debug = level;
522}
523#endif /* PCMCIA_DEBUG */
524
7282d491 525static const struct ethtool_ops netdev_ethtool_ops = {
1da177e4
LT		 526 .get_drvinfo = netdev_get_drvinfo,
527#ifdef PCMCIA_DEBUG
528 .get_msglevel = netdev_get_msglevel,
529 .set_msglevel = netdev_set_msglevel,
530#endif /* PCMCIA_DEBUG */
531};
532
533static int el3_config(struct net_device *dev, struct ifmap *map)
534{
535 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
536 if (map->port <= 3) {
537 dev->if_port = map->port;
538 printk(KERN_INFO "%s: switched to %s port\n",
539 dev->name, if_names[dev->if_port]);
540 tc589_set_xcvr(dev, dev->if_port);
541 } else
542 return -EINVAL;
543 }
544 return 0;
545}
546
547static int el3_open(struct net_device *dev)
548{
549 struct el3_private *lp = netdev_priv(dev);
fba395ee 550 struct pcmcia_device *link = lp->p_dev;
1da177e4 551
9940ec36 552 if (!pcmcia_dev_present(link))
1da177e4
LT		 553 return -ENODEV;
554
555 link->open++;
556 netif_start_queue(dev);
557
558 tc589_reset(dev);
559 init_timer(&lp->media);
560 lp->media.function = &media_check;
561 lp->media.data = (unsigned long) dev;
562 lp->media.expires = jiffies + HZ;
563 add_timer(&lp->media);
564
565 DEBUG(1, "%s: opened, status %4.4x.\n",
566 dev->name, inw(dev->base_addr + EL3_STATUS));
567
568 return 0;
569}
570
571static void el3_tx_timeout(struct net_device *dev)
572{
906da809 573 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 574
575 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
576 dump_status(dev);
cd65284f 577 dev->stats.tx_errors++;
1da177e4
LT		 578 dev->trans_start = jiffies;
579 /* Issue TX_RESET and TX_START commands. */
580 tc589_wait_for_completion(dev, TxReset);
581 outw(TxEnable, ioaddr + EL3_CMD);
582 netif_wake_queue(dev);
583}
584
585static void pop_tx_status(struct net_device *dev)
586{
906da809 587 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 588 int i;
589
590 /* Clear the Tx status stack. */
591 for (i = 32; i > 0; i--) {
592 u_char tx_status = inb(ioaddr + TX_STATUS);
593 if (!(tx_status & 0x84)) break;
594 /* reset transmitter on jabber error or underrun */
595 if (tx_status & 0x30)
596 tc589_wait_for_completion(dev, TxReset);
597 if (tx_status & 0x38) {
598 DEBUG(1, "%s: transmit error: status 0x%02x\n",
599 dev->name, tx_status);
600 outw(TxEnable, ioaddr + EL3_CMD);
cd65284f 601 dev->stats.tx_aborted_errors++;
1da177e4
LT		 602 }
603 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
604 }
605}
606
607static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
608{
906da809 609 unsigned int ioaddr = dev->base_addr;
1da177e4 610 struct el3_private *priv = netdev_priv(dev);
d08d2839 611 unsigned long flags;
1da177e4
LT		 612
613 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
614 "status %4.4x.\n", dev->name, (long)skb->len,
615 inw(ioaddr + EL3_STATUS));
616
d08d2839
K		 617 spin_lock_irqsave(&priv->lock, flags);
618
cd65284f 619 dev->stats.tx_bytes += skb->len;
1da177e4
LT		 620
621 /* Put out the doubleword header... */
622 outw(skb->len, ioaddr + TX_FIFO);
623 outw(0x00, ioaddr + TX_FIFO);
624 /* ... and the packet rounded to a doubleword. */
625 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
626
627 dev->trans_start = jiffies;
628 if (inw(ioaddr + TX_FREE) <= 1536) {
629 netif_stop_queue(dev);
630 /* Interrupt us when the FIFO has room for max-sized packet. */
631 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
632 }
633
1da177e4 634 pop_tx_status(dev);
d08d2839 635 spin_unlock_irqrestore(&priv->lock, flags);
63ac9b91 636 dev_kfree_skb(skb);
1da177e4 637
6ed10654 638 return NETDEV_TX_OK;
1da177e4
LT		 639}
640
641/* The EL3 interrupt handler. */
7d12e780 642static irqreturn_t el3_interrupt(int irq, void *dev_id)
1da177e4
LT		 643{
644 struct net_device *dev = (struct net_device *) dev_id;
645 struct el3_private *lp = netdev_priv(dev);
906da809 646 unsigned int ioaddr;
1da177e4
LT		 647 __u16 status;
648 int i = 0, handled = 1;
649
650 if (!netif_device_present(dev))
651 return IRQ_NONE;
652
653 ioaddr = dev->base_addr;
654
655 DEBUG(3, "%s: interrupt, status %4.4x.\n",
656 dev->name, inw(ioaddr + EL3_STATUS));
657
658 spin_lock(&lp->lock);
659 while ((status = inw(ioaddr + EL3_STATUS)) &
660 (IntLatch | RxComplete | StatsFull)) {
661 if ((status & 0xe000) != 0x2000) {
662 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
663 handled = 0;
664 break;
665 }
666
667 if (status & RxComplete)
668 el3_rx(dev);
669
670 if (status & TxAvailable) {
671 DEBUG(3, " TX room bit was handled.\n");
672 /* There's room in the FIFO for a full-sized packet. */
673 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
674 netif_wake_queue(dev);
675 }
676
677 if (status & TxComplete)
678 pop_tx_status(dev);
679
680 if (status & (AdapterFailure | RxEarly | StatsFull)) {
681 /* Handle all uncommon interrupts. */
682 if (status & StatsFull) /* Empty statistics. */
683 update_stats(dev);
684 if (status & RxEarly) { /* Rx early is unused. */
685 el3_rx(dev);
686 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
687 }
688 if (status & AdapterFailure) {
689 u16 fifo_diag;
690 EL3WINDOW(4);
691 fifo_diag = inw(ioaddr + 4);
692 EL3WINDOW(1);
693 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
694 " register %04x.\n", dev->name, fifo_diag);
695 if (fifo_diag & 0x0400) {
696 /* Tx overrun */
697 tc589_wait_for_completion(dev, TxReset);
698 outw(TxEnable, ioaddr + EL3_CMD);
699 }
700 if (fifo_diag & 0x2000) {
701 /* Rx underrun */
702 tc589_wait_for_completion(dev, RxReset);
e445bb4e 703 set_rx_mode(dev);
1da177e4
LT		 704 outw(RxEnable, ioaddr + EL3_CMD);
705 }
706 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
707 }
708 }
709
710 if (++i > 10) {
711 printk(KERN_ERR "%s: infinite loop in interrupt, "
712 "status %4.4x.\n", dev->name, status);
713 /* Clear all interrupts */
714 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
715 break;
716 }
717 /* Acknowledge the IRQ. */
718 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
719 }
720
721 lp->last_irq = jiffies;
722 spin_unlock(&lp->lock);
723 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
724 dev->name, inw(ioaddr + EL3_STATUS));
725 return IRQ_RETVAL(handled);
726}
727
728static void media_check(unsigned long arg)
729{
730 struct net_device *dev = (struct net_device *)(arg);
731 struct el3_private *lp = netdev_priv(dev);
906da809 732 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 733 u16 media, errs;
734 unsigned long flags;
735
736 if (!netif_device_present(dev)) goto reschedule;
737
1da177e4
LT		 738 /* Check for pending interrupt with expired latency timer: with
739 this, we can limp along even if the interrupt is blocked */
740 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
741 (inb(ioaddr + EL3_TIMER) == 0xff)) {
742 if (!lp->fast_poll)
743 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
d08d2839 744 el3_interrupt(dev->irq, dev);
1da177e4
LT		 745 lp->fast_poll = HZ;
746 }
747 if (lp->fast_poll) {
748 lp->fast_poll--;
749 lp->media.expires = jiffies + HZ/100;
750 add_timer(&lp->media);
751 return;
752 }
753
754 /* lp->lock guards the EL3 window. Window should always be 1 except
755 when the lock is held */
756 spin_lock_irqsave(&lp->lock, flags);
757 EL3WINDOW(4);
758 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
759
760 /* Ignore collisions unless we've had no irq's recently */
ff5688ae 761 if (time_before(jiffies, lp->last_irq + HZ)) {
1da177e4
LT		 762 media &= ~0x0010;
763 } else {
764 /* Try harder to detect carrier errors */
765 EL3WINDOW(6);
766 outw(StatsDisable, ioaddr + EL3_CMD);
767 errs = inb(ioaddr + 0);
768 outw(StatsEnable, ioaddr + EL3_CMD);
cd65284f 769 dev->stats.tx_carrier_errors += errs;
1da177e4
LT		 770 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
771 }
772
773 if (media != lp->media_status) {
774 if ((media & lp->media_status & 0x8000) &&
775 ((lp->media_status ^ media) & 0x0800))
776 printk(KERN_INFO "%s: %s link beat\n", dev->name,
777 (lp->media_status & 0x0800 ? "lost" : "found"));
778 else if ((media & lp->media_status & 0x4000) &&
779 ((lp->media_status ^ media) & 0x0010))
780 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
781 (lp->media_status & 0x0010 ? "ok" : "problem"));
782 if (dev->if_port == 0) {
783 if (media & 0x8000) {
784 if (media & 0x0800)
785 printk(KERN_INFO "%s: flipped to 10baseT\n",
786 dev->name);
787 else
788 tc589_set_xcvr(dev, 2);
789 } else if (media & 0x4000) {
790 if (media & 0x0010)
791 tc589_set_xcvr(dev, 1);
792 else
793 printk(KERN_INFO "%s: flipped to 10base2\n",
794 dev->name);
795 }
796 }
797 lp->media_status = media;
798 }
799
800 EL3WINDOW(1);
801 spin_unlock_irqrestore(&lp->lock, flags);
802
803reschedule:
804 lp->media.expires = jiffies + HZ;
805 add_timer(&lp->media);
806}
807
808static struct net_device_stats *el3_get_stats(struct net_device *dev)
809{
810 struct el3_private *lp = netdev_priv(dev);
811 unsigned long flags;
fba395ee 812 struct pcmcia_device *link = lp->p_dev;
1da177e4 813
9940ec36 814 if (pcmcia_dev_present(link)) {
1da177e4
LT		 815 spin_lock_irqsave(&lp->lock, flags);
816 update_stats(dev);
817 spin_unlock_irqrestore(&lp->lock, flags);
818 }
cd65284f 819 return &dev->stats;
1da177e4
LT		 820}
821
822/*
823 Update statistics. We change to register window 6, so this should be run
824 single-threaded if the device is active. This is expected to be a rare
825 operation, and it's simpler for the rest of the driver to assume that
826 window 1 is always valid rather than use a special window-state variable.
827
828 Caller must hold the lock for this
829*/
830static void update_stats(struct net_device *dev)
831{
906da809 832 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 833
834 DEBUG(2, "%s: updating the statistics.\n", dev->name);
835 /* Turn off statistics updates while reading. */
836 outw(StatsDisable, ioaddr + EL3_CMD);
837 /* Switch to the stats window, and read everything. */
838 EL3WINDOW(6);
cd65284f
PZ		 839 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
840 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
1da177e4 841 /* Multiple collisions. */ inb(ioaddr + 2);
cd65284f
PZ		 842 dev->stats.collisions += inb(ioaddr + 3);
843 dev->stats.tx_window_errors += inb(ioaddr + 4);
844 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
845 dev->stats.tx_packets += inb(ioaddr + 6);
1da177e4
LT		 846 /* Rx packets */ inb(ioaddr + 7);
847 /* Tx deferrals */ inb(ioaddr + 8);
848 /* Rx octets */ inw(ioaddr + 10);
849 /* Tx octets */ inw(ioaddr + 12);
850
851 /* Back to window 1, and turn statistics back on. */
852 EL3WINDOW(1);
853 outw(StatsEnable, ioaddr + EL3_CMD);
854}
855
856static int el3_rx(struct net_device *dev)
857{
906da809 858 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 859 int worklimit = 32;
860 short rx_status;
861
862 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
863 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
864 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
b9bdcd9b
RK		 865 worklimit > 0) {
866 worklimit--;
1da177e4
LT		 867 if (rx_status & 0x4000) { /* Error, update stats. */
868 short error = rx_status & 0x3800;
cd65284f 869 dev->stats.rx_errors++;
1da177e4 870 switch (error) {
cd65284f
PZ		 871 case 0x0000: dev->stats.rx_over_errors++; break;
872 case 0x0800: dev->stats.rx_length_errors++; break;
873 case 0x1000: dev->stats.rx_frame_errors++; break;
874 case 0x1800: dev->stats.rx_length_errors++; break;
875 case 0x2000: dev->stats.rx_frame_errors++; break;
876 case 0x2800: dev->stats.rx_crc_errors++; break;
1da177e4
LT		 877 }
878 } else {
879 short pkt_len = rx_status & 0x7ff;
880 struct sk_buff *skb;
881
882 skb = dev_alloc_skb(pkt_len+5);
883
884 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
885 pkt_len, rx_status);
886 if (skb != NULL) {
1da177e4
LT		 887 skb_reserve(skb, 2);
888 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
889 (pkt_len+3)>>2);
890 skb->protocol = eth_type_trans(skb, dev);
891 netif_rx(skb);
cd65284f
PZ		 892 dev->stats.rx_packets++;
893 dev->stats.rx_bytes += pkt_len;
1da177e4
LT		 894 } else {
895 DEBUG(1, "%s: couldn't allocate a sk_buff of"
896 " size %d.\n", dev->name, pkt_len);
cd65284f 897 dev->stats.rx_dropped++;
1da177e4
LT		 898 }
899 }
900 /* Pop the top of the Rx FIFO */
901 tc589_wait_for_completion(dev, RxDiscard);
902 }
903 if (worklimit == 0)
904 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
905 return 0;
906}
907
e445bb4e 908static void set_rx_mode(struct net_device *dev)
1da177e4 909{
906da809 910 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 911 u16 opts = SetRxFilter | RxStation | RxBroadcast;
912
1da177e4
LT		 913 if (dev->flags & IFF_PROMISC)
914 opts |= RxMulticast | RxProm;
915 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
916 opts |= RxMulticast;
917 outw(opts, ioaddr + EL3_CMD);
918}
919
e445bb4e
KK		 920static void set_multicast_list(struct net_device *dev)
921{
922 struct el3_private *priv = netdev_priv(dev);
923 unsigned long flags;
924
925 spin_lock_irqsave(&priv->lock, flags);
926 set_rx_mode(dev);
927 spin_unlock_irqrestore(&priv->lock, flags);
928}
929
1da177e4
LT		 930static int el3_close(struct net_device *dev)
931{
932 struct el3_private *lp = netdev_priv(dev);
fba395ee 933 struct pcmcia_device *link = lp->p_dev;
906da809 934 unsigned int ioaddr = dev->base_addr;
1da177e4
LT		 935
936 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
937
9940ec36 938 if (pcmcia_dev_present(link)) {
cd65284f 939 /* Turn off statistics ASAP. We update dev->stats below. */
1da177e4
LT		 940 outw(StatsDisable, ioaddr + EL3_CMD);
941
942 /* Disable the receiver and transmitter. */
943 outw(RxDisable, ioaddr + EL3_CMD);
944 outw(TxDisable, ioaddr + EL3_CMD);
945
946 if (dev->if_port == 2)
947 /* Turn off thinnet power. Green! */
948 outw(StopCoax, ioaddr + EL3_CMD);
949 else if (dev->if_port == 1) {
950 /* Disable link beat and jabber */
951 EL3WINDOW(4);
952 outw(0, ioaddr + WN4_MEDIA);
953 }
954
955 /* Switching back to window 0 disables the IRQ. */
956 EL3WINDOW(0);
957 /* But we explicitly zero the IRQ line select anyway. */
958 outw(0x0f00, ioaddr + WN0_IRQ);
959
960 /* Check if the card still exists */
961 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
962 update_stats(dev);
963 }
964
965 link->open--;
966 netif_stop_queue(dev);
967 del_timer_sync(&lp->media);
968
969 return 0;
970}
971
7ffec58c
DB		 972static struct pcmcia_device_id tc589_ids[] = {
973 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
974 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
975 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
976 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
f0a3a153
KK		 977 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "cis/3CXEM556.cis"),
978 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "cis/3CXEM556.cis"),
7ffec58c
DB		 979 PCMCIA_DEVICE_NULL,
980};
981MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
982
1da177e4
LT		 983static struct pcmcia_driver tc589_driver = {
984 .owner = THIS_MODULE,
985 .drv = {
986 .name = "3c589_cs",
987 },
15b99ac1 988 .probe = tc589_probe,
cc3b4866 989 .remove = tc589_detach,
7ffec58c 990 .id_table = tc589_ids,
98e4c28b
DB		 991 .suspend = tc589_suspend,
992 .resume = tc589_resume,
1da177e4
LT		 993};
994
995static int __init init_tc589(void)
996{
997 return pcmcia_register_driver(&tc589_driver);
998}
999
1000static void __exit exit_tc589(void)
1001{
1002 pcmcia_unregister_driver(&tc589_driver);
1da177e4
LT		 1003}
1004
1005module_init(init_tc589);
1006module_exit(exit_tc589);
Linux kernel - Deliverables
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