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[PATCH] pcmcia: unify detach, REMOVAL_EVENT handlers into one remove callback
[deliverable/linux.git] / drivers / net / pcmcia / 3c574_cs.c
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1da177e4
LT		 1/* 3c574.c: A PCMCIA ethernet driver for the 3com 3c574 "RoadRunner".
2
3 Written 1993-1998 by
4 Donald Becker, becker@scyld.com, (driver core) and
5 David Hinds, dahinds@users.sourceforge.net (from his PC card code).
6 Locking fixes (C) Copyright 2003 Red Hat Inc
7
8 This software may be used and distributed according to the terms of
9 the GNU General Public License, incorporated herein by reference.
10
11 This driver derives from Donald Becker's 3c509 core, which has the
12 following copyright:
13 Copyright 1993 United States Government as represented by the
14 Director, National Security Agency.
15
16
17*/
18
19/*
20 Theory of Operation
21
22I. Board Compatibility
23
24This device driver is designed for the 3Com 3c574 PC card Fast Ethernet
25Adapter.
26
27II. Board-specific settings
28
29None -- PC cards are autoconfigured.
30
31III. Driver operation
32
33The 3c574 uses a Boomerang-style interface, without the bus-master capability.
34See the Boomerang driver and documentation for most details.
35
36IV. Notes and chip documentation.
37
38Two added registers are used to enhance PIO performance, RunnerRdCtrl and
39RunnerWrCtrl. These are 11 bit down-counters that are preloaded with the
40count of word (16 bits) reads or writes the driver is about to do to the Rx
41or Tx FIFO. The chip is then able to hide the internal-PCI-bus to PC-card
42translation latency by buffering the I/O operations with an 8 word FIFO.
43Note: No other chip accesses are permitted when this buffer is used.
44
45A second enhancement is that both attribute and common memory space
460x0800-0x0fff can translated to the PIO FIFO. Thus memory operations (faster
47with *some* PCcard bridges) may be used instead of I/O operations.
48This is enabled by setting the 0x10 bit in the PCMCIA LAN COR.
49
50Some slow PC card bridges work better if they never see a WAIT signal.
51This is configured by setting the 0x20 bit in the PCMCIA LAN COR.
52Only do this after testing that it is reliable and improves performance.
53
54The upper five bits of RunnerRdCtrl are used to window into PCcard
55configuration space registers. Window 0 is the regular Boomerang/Odie
56register set, 1-5 are various PC card control registers, and 16-31 are
57the (reversed!) CIS table.
58
59A final note: writing the InternalConfig register in window 3 with an
60invalid ramWidth is Very Bad.
61
62V. References
63
64http://www.scyld.com/expert/NWay.html
65http://www.national.com/pf/DP/DP83840.html
66
67Thanks to Terry Murphy of 3Com for providing development information for
68earlier 3Com products.
69
70*/
71
72#include <linux/module.h>
73#include <linux/kernel.h>
74#include <linux/init.h>
75#include <linux/slab.h>
76#include <linux/string.h>
77#include <linux/timer.h>
78#include <linux/interrupt.h>
79#include <linux/in.h>
80#include <linux/delay.h>
81#include <linux/netdevice.h>
82#include <linux/etherdevice.h>
83#include <linux/skbuff.h>
84#include <linux/if_arp.h>
85#include <linux/ioport.h>
86#include <linux/ethtool.h>
87#include <linux/bitops.h>
88
1da177e4
LT		 89#include <pcmcia/cs_types.h>
90#include <pcmcia/cs.h>
91#include <pcmcia/cistpl.h>
92#include <pcmcia/cisreg.h>
93#include <pcmcia/ciscode.h>
94#include <pcmcia/ds.h>
95#include <pcmcia/mem_op.h>
96
97#include <asm/uaccess.h>
98#include <asm/io.h>
99#include <asm/system.h>
100
101/*====================================================================*/
102
103/* Module parameters */
104
105MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
106MODULE_DESCRIPTION("3Com 3c574 series PCMCIA ethernet driver");
107MODULE_LICENSE("GPL");
108
109#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
110
111/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
112INT_MODULE_PARM(max_interrupt_work, 32);
113
114/* Force full duplex modes? */
115INT_MODULE_PARM(full_duplex, 0);
116
117/* Autodetect link polarity reversal? */
118INT_MODULE_PARM(auto_polarity, 1);
119
120#ifdef PCMCIA_DEBUG
121INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
122#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
123static char *version =
124"3c574_cs.c 1.65ac1 2003/04/07 Donald Becker/David Hinds, becker@scyld.com.\n";
125#else
126#define DEBUG(n, args...)
127#endif
128
129/*====================================================================*/
130
131/* Time in jiffies before concluding the transmitter is hung. */
132#define TX_TIMEOUT ((800*HZ)/1000)
133
134/* To minimize the size of the driver source and make the driver more
135 readable not all constants are symbolically defined.
136 You'll need the manual if you want to understand driver details anyway. */
137/* Offsets from base I/O address. */
138#define EL3_DATA 0x00
139#define EL3_CMD 0x0e
140#define EL3_STATUS 0x0e
141
142#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
143
144/* The top five bits written to EL3_CMD are a command, the lower
145 11 bits are the parameter, if applicable. */
146enum el3_cmds {
147 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
148 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
149 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
150 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
151 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
152 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
153 StatsDisable = 22<<11, StopCoax = 23<<11,
154};
155
156enum elxl_status {
157 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
158 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
159 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000 };
160
161/* The SetRxFilter command accepts the following classes: */
162enum RxFilter {
163 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8
164};
165
166enum Window0 {
167 Wn0EepromCmd = 10, Wn0EepromData = 12, /* EEPROM command/address, data. */
168 IntrStatus=0x0E, /* Valid in all windows. */
169};
170/* These assumes the larger EEPROM. */
171enum Win0_EEPROM_cmds {
172 EEPROM_Read = 0x200, EEPROM_WRITE = 0x100, EEPROM_ERASE = 0x300,
173 EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */
174 EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */
175};
176
177/* Register window 1 offsets, the window used in normal operation.
178 On the "Odie" this window is always mapped at offsets 0x10-0x1f.
179 Except for TxFree, which is overlapped by RunnerWrCtrl. */
180enum Window1 {
181 TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14,
182 RxStatus = 0x18, Timer=0x1A, TxStatus = 0x1B,
183 TxFree = 0x0C, /* Remaining free bytes in Tx buffer. */
184 RunnerRdCtrl = 0x16, RunnerWrCtrl = 0x1c,
185};
186
187enum Window3 { /* Window 3: MAC/config bits. */
188 Wn3_Config=0, Wn3_MAC_Ctrl=6, Wn3_Options=8,
189};
190union wn3_config {
191 int i;
192 struct w3_config_fields {
193 unsigned int ram_size:3, ram_width:1, ram_speed:2, rom_size:2;
194 int pad8:8;
195 unsigned int ram_split:2, pad18:2, xcvr:3, pad21:1, autoselect:1;
196 int pad24:7;
197 } u;
198};
199
200enum Window4 { /* Window 4: Xcvr/media bits. */
201 Wn4_FIFODiag = 4, Wn4_NetDiag = 6, Wn4_PhysicalMgmt=8, Wn4_Media = 10,
202};
203
204#define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
205
206struct el3_private {
207 dev_link_t link;
208 dev_node_t node;
209 struct net_device_stats stats;
210 u16 advertising, partner; /* NWay media advertisement */
211 unsigned char phys; /* MII device address */
212 unsigned int autoselect:1, default_media:3; /* Read from the EEPROM/Wn3_Config. */
213 /* for transceiver monitoring */
214 struct timer_list media;
215 unsigned short media_status;
216 unsigned short fast_poll;
217 unsigned long last_irq;
218 spinlock_t window_lock; /* Guards the Window selection */
219};
220
221/* Set iff a MII transceiver on any interface requires mdio preamble.
222 This only set with the original DP83840 on older 3c905 boards, so the extra
223 code size of a per-interface flag is not worthwhile. */
224static char mii_preamble_required = 0;
225
226/* Index of functions. */
227
228static void tc574_config(dev_link_t *link);
229static void tc574_release(dev_link_t *link);
230static int tc574_event(event_t event, int priority,
231 event_callback_args_t *args);
232
233static void mdio_sync(kio_addr_t ioaddr, int bits);
234static int mdio_read(kio_addr_t ioaddr, int phy_id, int location);
235static void mdio_write(kio_addr_t ioaddr, int phy_id, int location, int value);
236static unsigned short read_eeprom(kio_addr_t ioaddr, int index);
237static void tc574_wait_for_completion(struct net_device *dev, int cmd);
238
239static void tc574_reset(struct net_device *dev);
240static void media_check(unsigned long arg);
241static int el3_open(struct net_device *dev);
242static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
243static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs);
244static void update_stats(struct net_device *dev);
245static struct net_device_stats *el3_get_stats(struct net_device *dev);
246static int el3_rx(struct net_device *dev, int worklimit);
247static int el3_close(struct net_device *dev);
248static void el3_tx_timeout(struct net_device *dev);
249static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
250static struct ethtool_ops netdev_ethtool_ops;
251static void set_rx_mode(struct net_device *dev);
252
253static dev_info_t dev_info = "3c574_cs";
254
255static dev_link_t *tc574_attach(void);
cc3b4866 256static void tc574_detach(struct pcmcia_device *p_dev);
1da177e4
LT		 257
258static dev_link_t *dev_list;
259
260/*
261 tc574_attach() creates an "instance" of the driver, allocating
262 local data structures for one device. The device is registered
263 with Card Services.
264*/
265
266static dev_link_t *tc574_attach(void)
267{
268 struct el3_private *lp;
269 client_reg_t client_reg;
270 dev_link_t *link;
271 struct net_device *dev;
272 int ret;
273
274 DEBUG(0, "3c574_attach()\n");
275
276 /* Create the PC card device object. */
277 dev = alloc_etherdev(sizeof(struct el3_private));
278 if (!dev)
279 return NULL;
280 lp = netdev_priv(dev);
281 link = &lp->link;
282 link->priv = dev;
283
284 spin_lock_init(&lp->window_lock);
285 link->io.NumPorts1 = 32;
286 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
287 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
288 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
289 link->irq.Handler = &el3_interrupt;
290 link->irq.Instance = dev;
291 link->conf.Attributes = CONF_ENABLE_IRQ;
292 link->conf.Vcc = 50;
293 link->conf.IntType = INT_MEMORY_AND_IO;
294 link->conf.ConfigIndex = 1;
295 link->conf.Present = PRESENT_OPTION;
296
297 /* The EL3-specific entries in the device structure. */
298 dev->hard_start_xmit = &el3_start_xmit;
299 dev->get_stats = &el3_get_stats;
300 dev->do_ioctl = &el3_ioctl;
301 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
302 dev->set_multicast_list = &set_rx_mode;
303 dev->open = &el3_open;
304 dev->stop = &el3_close;
305#ifdef HAVE_TX_TIMEOUT
306 dev->tx_timeout = el3_tx_timeout;
307 dev->watchdog_timeo = TX_TIMEOUT;
308#endif
309
310 /* Register with Card Services */
311 link->next = dev_list;
312 dev_list = link;
313 client_reg.dev_info = &dev_info;
1da177e4
LT		 314 client_reg.Version = 0x0210;
315 client_reg.event_callback_args.client_data = link;
316 ret = pcmcia_register_client(&link->handle, &client_reg);
317 if (ret != 0) {
318 cs_error(link->handle, RegisterClient, ret);
cc3b4866 319 tc574_detach(link->handle);
1da177e4
LT		 320 return NULL;
321 }
322
323 return link;
324} /* tc574_attach */
325
326/*
327
328 This deletes a driver "instance". The device is de-registered
329 with Card Services. If it has been released, all local data
330 structures are freed. Otherwise, the structures will be freed
331 when the device is released.
332
333*/
334
cc3b4866 335static void tc574_detach(struct pcmcia_device *p_dev)
1da177e4 336{
cc3b4866 337 dev_link_t *link = dev_to_instance(p_dev);
1da177e4
LT		 338 struct net_device *dev = link->priv;
339 dev_link_t **linkp;
340
341 DEBUG(0, "3c574_detach(0x%p)\n", link);
342
343 /* Locate device structure */
344 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
345 if (*linkp == link) break;
346 if (*linkp == NULL)
347 return;
348
349 if (link->dev)
350 unregister_netdev(dev);
351
352 if (link->state & DEV_CONFIG)
353 tc574_release(link);
354
1da177e4
LT		 355 /* Unlink device structure, free bits */
356 *linkp = link->next;
357 free_netdev(dev);
358} /* tc574_detach */
359
360/*
361 tc574_config() is scheduled to run after a CARD_INSERTION event
362 is received, to configure the PCMCIA socket, and to make the
363 ethernet device available to the system.
364*/
365
366#define CS_CHECK(fn, ret) \
367 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
368
369static char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
370
371static void tc574_config(dev_link_t *link)
372{
373 client_handle_t handle = link->handle;
374 struct net_device *dev = link->priv;
375 struct el3_private *lp = netdev_priv(dev);
376 tuple_t tuple;
377 cisparse_t parse;
378 unsigned short buf[32];
379 int last_fn, last_ret, i, j;
380 kio_addr_t ioaddr;
381 u16 *phys_addr;
382 char *cardname;
383 union wn3_config config;
384
385 phys_addr = (u16 *)dev->dev_addr;
386
387 DEBUG(0, "3c574_config(0x%p)\n", link);
388
389 tuple.Attributes = 0;
390 tuple.DesiredTuple = CISTPL_CONFIG;
391 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
392 tuple.TupleData = (cisdata_t *)buf;
393 tuple.TupleDataMax = 64;
394 tuple.TupleOffset = 0;
395 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
396 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
397 link->conf.ConfigBase = parse.config.base;
398 link->conf.Present = parse.config.rmask[0];
399
400 /* Configure card */
401 link->state |= DEV_CONFIG;
402
403 link->io.IOAddrLines = 16;
404 for (i = j = 0; j < 0x400; j += 0x20) {
405 link->io.BasePort1 = j ^ 0x300;
406 i = pcmcia_request_io(link->handle, &link->io);
407 if (i == CS_SUCCESS) break;
408 }
409 if (i != CS_SUCCESS) {
410 cs_error(link->handle, RequestIO, i);
411 goto failed;
412 }
413 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
414 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
415
416 dev->irq = link->irq.AssignedIRQ;
417 dev->base_addr = link->io.BasePort1;
418
419 ioaddr = dev->base_addr;
420
421 /* The 3c574 normally uses an EEPROM for configuration info, including
422 the hardware address. The future products may include a modem chip
423 and put the address in the CIS. */
424 tuple.DesiredTuple = 0x88;
425 if (pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) {
426 pcmcia_get_tuple_data(handle, &tuple);
427 for (i = 0; i < 3; i++)
428 phys_addr[i] = htons(buf[i]);
429 } else {
430 EL3WINDOW(0);
431 for (i = 0; i < 3; i++)
432 phys_addr[i] = htons(read_eeprom(ioaddr, i + 10));
433 if (phys_addr[0] == 0x6060) {
434 printk(KERN_NOTICE "3c574_cs: IO port conflict at 0x%03lx"
435 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
436 goto failed;
437 }
438 }
439 tuple.DesiredTuple = CISTPL_VERS_1;
440 if (pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS &&
441 pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS &&
442 pcmcia_parse_tuple(handle, &tuple, &parse) == CS_SUCCESS) {
443 cardname = parse.version_1.str + parse.version_1.ofs[1];
444 } else
445 cardname = "3Com 3c574";
446
447 {
448 u_char mcr;
449 outw(2<<11, ioaddr + RunnerRdCtrl);
450 mcr = inb(ioaddr + 2);
451 outw(0<<11, ioaddr + RunnerRdCtrl);
452 printk(KERN_INFO " ASIC rev %d,", mcr>>3);
453 EL3WINDOW(3);
454 config.i = inl(ioaddr + Wn3_Config);
455 lp->default_media = config.u.xcvr;
456 lp->autoselect = config.u.autoselect;
457 }
458
459 init_timer(&lp->media);
460
461 {
462 int phy;
463
464 /* Roadrunner only: Turn on the MII transceiver */
465 outw(0x8040, ioaddr + Wn3_Options);
466 mdelay(1);
467 outw(0xc040, ioaddr + Wn3_Options);
468 tc574_wait_for_completion(dev, TxReset);
469 tc574_wait_for_completion(dev, RxReset);
470 mdelay(1);
471 outw(0x8040, ioaddr + Wn3_Options);
472
473 EL3WINDOW(4);
474 for (phy = 1; phy <= 32; phy++) {
475 int mii_status;
476 mdio_sync(ioaddr, 32);
477 mii_status = mdio_read(ioaddr, phy & 0x1f, 1);
478 if (mii_status != 0xffff) {
479 lp->phys = phy & 0x1f;
480 DEBUG(0, " MII transceiver at index %d, status %x.\n",
481 phy, mii_status);
482 if ((mii_status & 0x0040) == 0)
483 mii_preamble_required = 1;
484 break;
485 }
486 }
487 if (phy > 32) {
488 printk(KERN_NOTICE " No MII transceivers found!\n");
489 goto failed;
490 }
491 i = mdio_read(ioaddr, lp->phys, 16) | 0x40;
492 mdio_write(ioaddr, lp->phys, 16, i);
493 lp->advertising = mdio_read(ioaddr, lp->phys, 4);
494 if (full_duplex) {
495 /* Only advertise the FD media types. */
496 lp->advertising &= ~0x02a0;
497 mdio_write(ioaddr, lp->phys, 4, lp->advertising);
498 }
499 }
500
501 link->state &= ~DEV_CONFIG_PENDING;
502 link->dev = &lp->node;
503 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
504
505 if (register_netdev(dev) != 0) {
506 printk(KERN_NOTICE "3c574_cs: register_netdev() failed\n");
507 link->dev = NULL;
508 goto failed;
509 }
510
511 strcpy(lp->node.dev_name, dev->name);
512
513 printk(KERN_INFO "%s: %s at io %#3lx, irq %d, hw_addr ",
514 dev->name, cardname, dev->base_addr, dev->irq);
515 for (i = 0; i < 6; i++)
516 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : ".\n"));
517 printk(" %dK FIFO split %s Rx:Tx, %sMII interface.\n",
518 8 << config.u.ram_size, ram_split[config.u.ram_split],
519 config.u.autoselect ? "autoselect " : "");
520
521 return;
522
523cs_failed:
524 cs_error(link->handle, last_fn, last_ret);
525failed:
526 tc574_release(link);
527 return;
528
529} /* tc574_config */
530
531/*
532 After a card is removed, tc574_release() will unregister the net
533 device, and release the PCMCIA configuration. If the device is
534 still open, this will be postponed until it is closed.
535*/
536
537static void tc574_release(dev_link_t *link)
538{
539 DEBUG(0, "3c574_release(0x%p)\n", link);
540
541 pcmcia_release_configuration(link->handle);
542 pcmcia_release_io(link->handle, &link->io);
543 pcmcia_release_irq(link->handle, &link->irq);
544
545 link->state &= ~DEV_CONFIG;
546}
547
98e4c28b
DB		 548static int tc574_suspend(struct pcmcia_device *p_dev)
549{
550 dev_link_t *link = dev_to_instance(p_dev);
551 struct net_device *dev = link->priv;
552
553 link->state |= DEV_SUSPEND;
554 if (link->state & DEV_CONFIG) {
555 if (link->open)
556 netif_device_detach(dev);
557 pcmcia_release_configuration(link->handle);
558 }
559
560 return 0;
561}
562
563static int tc574_resume(struct pcmcia_device *p_dev)
564{
565 dev_link_t *link = dev_to_instance(p_dev);
566 struct net_device *dev = link->priv;
567
568 link->state &= ~DEV_SUSPEND;
569 if (link->state & DEV_CONFIG) {
570 pcmcia_request_configuration(link->handle, &link->conf);
571 if (link->open) {
572 tc574_reset(dev);
573 netif_device_attach(dev);
574 }
575 }
576
577 return 0;
578}
579
1da177e4
LT		 580/*
581 The card status event handler. Mostly, this schedules other
582 stuff to run after an event is received. A CARD_REMOVAL event
583 also sets some flags to discourage the net drivers from trying
584 to talk to the card any more.
585*/
586
587static int tc574_event(event_t event, int priority,
588 event_callback_args_t *args)
589{
590 dev_link_t *link = args->client_data;
1da177e4
LT		 591
592 DEBUG(1, "3c574_event(0x%06x)\n", event);
593
594 switch (event) {
1da177e4
LT		 595 case CS_EVENT_CARD_INSERTION:
596 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
597 tc574_config(link);
598 break;
1da177e4
LT		 599 }
600 return 0;
601} /* tc574_event */
602
603static void dump_status(struct net_device *dev)
604{
605 kio_addr_t ioaddr = dev->base_addr;
606 EL3WINDOW(1);
607 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
608 "%02x, tx free %04x\n", inw(ioaddr+EL3_STATUS),
609 inw(ioaddr+RxStatus), inb(ioaddr+TxStatus),
610 inw(ioaddr+TxFree));
611 EL3WINDOW(4);
612 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
613 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
614 inw(ioaddr+0x08), inw(ioaddr+0x0a));
615 EL3WINDOW(1);
616}
617
618/*
619 Use this for commands that may take time to finish
620*/
621static void tc574_wait_for_completion(struct net_device *dev, int cmd)
622{
623 int i = 1500;
624 outw(cmd, dev->base_addr + EL3_CMD);
625 while (--i > 0)
626 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
627 if (i == 0)
628 printk(KERN_NOTICE "%s: command 0x%04x did not complete!\n", dev->name, cmd);
629}
630
631/* Read a word from the EEPROM using the regular EEPROM access register.
632 Assume that we are in register window zero.
633 */
634static unsigned short read_eeprom(kio_addr_t ioaddr, int index)
635{
636 int timer;
637 outw(EEPROM_Read + index, ioaddr + Wn0EepromCmd);
638 /* Pause for at least 162 usec for the read to take place. */
639 for (timer = 1620; timer >= 0; timer--) {
640 if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0)
641 break;
642 }
643 return inw(ioaddr + Wn0EepromData);
644}
645
646/* MII transceiver control section.
647 Read and write the MII registers using software-generated serial
648 MDIO protocol. See the MII specifications or DP83840A data sheet
649 for details.
650 The maxium data clock rate is 2.5 Mhz. The timing is easily met by the
651 slow PC card interface. */
652
653#define MDIO_SHIFT_CLK 0x01
654#define MDIO_DIR_WRITE 0x04
655#define MDIO_DATA_WRITE0 (0x00 | MDIO_DIR_WRITE)
656#define MDIO_DATA_WRITE1 (0x02 | MDIO_DIR_WRITE)
657#define MDIO_DATA_READ 0x02
658#define MDIO_ENB_IN 0x00
659
660/* Generate the preamble required for initial synchronization and
661 a few older transceivers. */
662static void mdio_sync(kio_addr_t ioaddr, int bits)
663{
664 kio_addr_t mdio_addr = ioaddr + Wn4_PhysicalMgmt;
665
666 /* Establish sync by sending at least 32 logic ones. */
667 while (-- bits >= 0) {
668 outw(MDIO_DATA_WRITE1, mdio_addr);
669 outw(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr);
670 }
671}
672
673static int mdio_read(kio_addr_t ioaddr, int phy_id, int location)
674{
675 int i;
676 int read_cmd = (0xf6 << 10) | (phy_id << 5) | location;
677 unsigned int retval = 0;
678 kio_addr_t mdio_addr = ioaddr + Wn4_PhysicalMgmt;
679
680 if (mii_preamble_required)
681 mdio_sync(ioaddr, 32);
682
683 /* Shift the read command bits out. */
684 for (i = 14; i >= 0; i--) {
685 int dataval = (read_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
686 outw(dataval, mdio_addr);
687 outw(dataval | MDIO_SHIFT_CLK, mdio_addr);
688 }
689 /* Read the two transition, 16 data, and wire-idle bits. */
690 for (i = 19; i > 0; i--) {
691 outw(MDIO_ENB_IN, mdio_addr);
692 retval = (retval << 1) | ((inw(mdio_addr) & MDIO_DATA_READ) ? 1 : 0);
693 outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr);
694 }
695 return (retval>>1) & 0xffff;
696}
697
698static void mdio_write(kio_addr_t ioaddr, int phy_id, int location, int value)
699{
700 int write_cmd = 0x50020000 | (phy_id << 23) | (location << 18) | value;
701 kio_addr_t mdio_addr = ioaddr + Wn4_PhysicalMgmt;
702 int i;
703
704 if (mii_preamble_required)
705 mdio_sync(ioaddr, 32);
706
707 /* Shift the command bits out. */
708 for (i = 31; i >= 0; i--) {
709 int dataval = (write_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
710 outw(dataval, mdio_addr);
711 outw(dataval | MDIO_SHIFT_CLK, mdio_addr);
712 }
713 /* Leave the interface idle. */
714 for (i = 1; i >= 0; i--) {
715 outw(MDIO_ENB_IN, mdio_addr);
716 outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr);
717 }
718
719 return;
720}
721
722/* Reset and restore all of the 3c574 registers. */
723static void tc574_reset(struct net_device *dev)
724{
725 struct el3_private *lp = netdev_priv(dev);
726 int i;
727 kio_addr_t ioaddr = dev->base_addr;
728 unsigned long flags;
729
730 tc574_wait_for_completion(dev, TotalReset|0x10);
731
732 spin_lock_irqsave(&lp->window_lock, flags);
733 /* Clear any transactions in progress. */
734 outw(0, ioaddr + RunnerWrCtrl);
735 outw(0, ioaddr + RunnerRdCtrl);
736
737 /* Set the station address and mask. */
738 EL3WINDOW(2);
739 for (i = 0; i < 6; i++)
740 outb(dev->dev_addr[i], ioaddr + i);
741 for (; i < 12; i+=2)
742 outw(0, ioaddr + i);
743
744 /* Reset config options */
745 EL3WINDOW(3);
746 outb((dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl);
747 outl((lp->autoselect ? 0x01000000 : 0) | 0x0062001b,
748 ioaddr + Wn3_Config);
749 /* Roadrunner only: Turn on the MII transceiver. */
750 outw(0x8040, ioaddr + Wn3_Options);
751 mdelay(1);
752 outw(0xc040, ioaddr + Wn3_Options);
753 EL3WINDOW(1);
754 spin_unlock_irqrestore(&lp->window_lock, flags);
755
756 tc574_wait_for_completion(dev, TxReset);
757 tc574_wait_for_completion(dev, RxReset);
758 mdelay(1);
759 spin_lock_irqsave(&lp->window_lock, flags);
760 EL3WINDOW(3);
761 outw(0x8040, ioaddr + Wn3_Options);
762
763 /* Switch to the stats window, and clear all stats by reading. */
764 outw(StatsDisable, ioaddr + EL3_CMD);
765 EL3WINDOW(6);
766 for (i = 0; i < 10; i++)
767 inb(ioaddr + i);
768 inw(ioaddr + 10);
769 inw(ioaddr + 12);
770 EL3WINDOW(4);
771 inb(ioaddr + 12);
772 inb(ioaddr + 13);
773
774 /* .. enable any extra statistics bits.. */
775 outw(0x0040, ioaddr + Wn4_NetDiag);
776
777 EL3WINDOW(1);
778 spin_unlock_irqrestore(&lp->window_lock, flags);
779
780 /* .. re-sync MII and re-fill what NWay is advertising. */
781 mdio_sync(ioaddr, 32);
782 mdio_write(ioaddr, lp->phys, 4, lp->advertising);
783 if (!auto_polarity) {
784 /* works for TDK 78Q2120 series MII's */
785 int i = mdio_read(ioaddr, lp->phys, 16) | 0x20;
786 mdio_write(ioaddr, lp->phys, 16, i);
787 }
788
789 spin_lock_irqsave(&lp->window_lock, flags);
790 /* Switch to register set 1 for normal use, just for TxFree. */
791 set_rx_mode(dev);
792 spin_unlock_irqrestore(&lp->window_lock, flags);
793 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
794 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
795 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
796 /* Allow status bits to be seen. */
797 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
798 /* Ack all pending events, and set active indicator mask. */
799 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
800 ioaddr + EL3_CMD);
801 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
802 | AdapterFailure | RxEarly, ioaddr + EL3_CMD);
803}
804
805static int el3_open(struct net_device *dev)
806{
807 struct el3_private *lp = netdev_priv(dev);
808 dev_link_t *link = &lp->link;
809
810 if (!DEV_OK(link))
811 return -ENODEV;
812
813 link->open++;
814 netif_start_queue(dev);
815
816 tc574_reset(dev);
817 lp->media.function = &media_check;
818 lp->media.data = (unsigned long) dev;
819 lp->media.expires = jiffies + HZ;
820 add_timer(&lp->media);
821
822 DEBUG(2, "%s: opened, status %4.4x.\n",
823 dev->name, inw(dev->base_addr + EL3_STATUS));
824
825 return 0;
826}
827
828static void el3_tx_timeout(struct net_device *dev)
829{
830 struct el3_private *lp = netdev_priv(dev);
831 kio_addr_t ioaddr = dev->base_addr;
832
833 printk(KERN_NOTICE "%s: Transmit timed out!\n", dev->name);
834 dump_status(dev);
835 lp->stats.tx_errors++;
836 dev->trans_start = jiffies;
837 /* Issue TX_RESET and TX_START commands. */
838 tc574_wait_for_completion(dev, TxReset);
839 outw(TxEnable, ioaddr + EL3_CMD);
840 netif_wake_queue(dev);
841}
842
843static void pop_tx_status(struct net_device *dev)
844{
845 struct el3_private *lp = netdev_priv(dev);
846 kio_addr_t ioaddr = dev->base_addr;
847 int i;
848
849 /* Clear the Tx status stack. */
850 for (i = 32; i > 0; i--) {
851 u_char tx_status = inb(ioaddr + TxStatus);
852 if (!(tx_status & 0x84))
853 break;
854 /* reset transmitter on jabber error or underrun */
855 if (tx_status & 0x30)
856 tc574_wait_for_completion(dev, TxReset);
857 if (tx_status & 0x38) {
858 DEBUG(1, "%s: transmit error: status 0x%02x\n",
859 dev->name, tx_status);
860 outw(TxEnable, ioaddr + EL3_CMD);
861 lp->stats.tx_aborted_errors++;
862 }
863 outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */
864 }
865}
866
867static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
868{
869 kio_addr_t ioaddr = dev->base_addr;
870 struct el3_private *lp = netdev_priv(dev);
871 unsigned long flags;
872
873 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
874 "status %4.4x.\n", dev->name, (long)skb->len,
875 inw(ioaddr + EL3_STATUS));
876
877 spin_lock_irqsave(&lp->window_lock, flags);
878 outw(skb->len, ioaddr + TX_FIFO);
879 outw(0, ioaddr + TX_FIFO);
880 outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2);
881
882 dev->trans_start = jiffies;
883
884 /* TxFree appears only in Window 1, not offset 0x1c. */
885 if (inw(ioaddr + TxFree) <= 1536) {
886 netif_stop_queue(dev);
887 /* Interrupt us when the FIFO has room for max-sized packet.
888 The threshold is in units of dwords. */
889 outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD);
890 }
891
892 pop_tx_status(dev);
893 spin_unlock_irqrestore(&lp->window_lock, flags);
894 dev_kfree_skb(skb);
895 return 0;
896}
897
898/* The EL3 interrupt handler. */
899static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
900{
901 struct net_device *dev = (struct net_device *) dev_id;
902 struct el3_private *lp = netdev_priv(dev);
903 kio_addr_t ioaddr;
904 unsigned status;
905 int work_budget = max_interrupt_work;
906 int handled = 0;
907
908 if (!netif_device_present(dev))
909 return IRQ_NONE;
910 ioaddr = dev->base_addr;
911
912 DEBUG(3, "%s: interrupt, status %4.4x.\n",
913 dev->name, inw(ioaddr + EL3_STATUS));
914
915 spin_lock(&lp->window_lock);
916
917 while ((status = inw(ioaddr + EL3_STATUS)) &
918 (IntLatch | RxComplete | RxEarly | StatsFull)) {
919 if (!netif_device_present(dev) ||
920 ((status & 0xe000) != 0x2000)) {
921 DEBUG(1, "%s: Interrupt from dead card\n", dev->name);
922 break;
923 }
924
925 handled = 1;
926
927 if (status & RxComplete)
928 work_budget = el3_rx(dev, work_budget);
929
930 if (status & TxAvailable) {
931 DEBUG(3, " TX room bit was handled.\n");
932 /* There's room in the FIFO for a full-sized packet. */
933 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
934 netif_wake_queue(dev);
935 }
936
937 if (status & TxComplete)
938 pop_tx_status(dev);
939
940 if (status & (AdapterFailure | RxEarly | StatsFull)) {
941 /* Handle all uncommon interrupts. */
942 if (status & StatsFull)
943 update_stats(dev);
944 if (status & RxEarly) {
945 work_budget = el3_rx(dev, work_budget);
946 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
947 }
948 if (status & AdapterFailure) {
949 u16 fifo_diag;
950 EL3WINDOW(4);
951 fifo_diag = inw(ioaddr + Wn4_FIFODiag);
952 EL3WINDOW(1);
953 printk(KERN_NOTICE "%s: adapter failure, FIFO diagnostic"
954 " register %04x.\n", dev->name, fifo_diag);
955 if (fifo_diag & 0x0400) {
956 /* Tx overrun */
957 tc574_wait_for_completion(dev, TxReset);
958 outw(TxEnable, ioaddr + EL3_CMD);
959 }
960 if (fifo_diag & 0x2000) {
961 /* Rx underrun */
962 tc574_wait_for_completion(dev, RxReset);
963 set_rx_mode(dev);
964 outw(RxEnable, ioaddr + EL3_CMD);
965 }
966 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
967 }
968 }
969
970 if (--work_budget < 0) {
971 DEBUG(0, "%s: Too much work in interrupt, "
972 "status %4.4x.\n", dev->name, status);
973 /* Clear all interrupts */
974 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
975 break;
976 }
977 /* Acknowledge the IRQ. */
978 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
979 }
980
981 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
982 dev->name, inw(ioaddr + EL3_STATUS));
983
984 spin_unlock(&lp->window_lock);
985 return IRQ_RETVAL(handled);
986}
987
988/*
989 This timer serves two purposes: to check for missed interrupts
990 (and as a last resort, poll the NIC for events), and to monitor
991 the MII, reporting changes in cable status.
992*/
993static void media_check(unsigned long arg)
994{
995 struct net_device *dev = (struct net_device *) arg;
996 struct el3_private *lp = netdev_priv(dev);
997 kio_addr_t ioaddr = dev->base_addr;
998 unsigned long flags;
999 unsigned short /* cable, */ media, partner;
1000
1001 if (!netif_device_present(dev))
1002 goto reschedule;
1003
1004 /* Check for pending interrupt with expired latency timer: with
1005 this, we can limp along even if the interrupt is blocked */
1006 if ((inw(ioaddr + EL3_STATUS) & IntLatch) && (inb(ioaddr + Timer) == 0xff)) {
1007 if (!lp->fast_poll)
1008 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
1009 el3_interrupt(dev->irq, lp, NULL);
1010 lp->fast_poll = HZ;
1011 }
1012 if (lp->fast_poll) {
1013 lp->fast_poll--;
1014 lp->media.expires = jiffies + 2*HZ/100;
1015 add_timer(&lp->media);
1016 return;
1017 }
1018
1019 spin_lock_irqsave(&lp->window_lock, flags);
1020 EL3WINDOW(4);
1021 media = mdio_read(ioaddr, lp->phys, 1);
1022 partner = mdio_read(ioaddr, lp->phys, 5);
1023 EL3WINDOW(1);
1024
1025 if (media != lp->media_status) {
1026 if ((media ^ lp->media_status) & 0x0004)
1027 printk(KERN_INFO "%s: %s link beat\n", dev->name,
1028 (lp->media_status & 0x0004) ? "lost" : "found");
1029 if ((media ^ lp->media_status) & 0x0020) {
1030 lp->partner = 0;
1031 if (lp->media_status & 0x0020) {
1032 printk(KERN_INFO "%s: autonegotiation restarted\n",
1033 dev->name);
1034 } else if (partner) {
1035 partner &= lp->advertising;
1036 lp->partner = partner;
1037 printk(KERN_INFO "%s: autonegotiation complete: "
1038 "%sbaseT-%cD selected\n", dev->name,
1039 ((partner & 0x0180) ? "100" : "10"),
1040 ((partner & 0x0140) ? 'F' : 'H'));
1041 } else {
1042 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
1043 dev->name);
1044 }
1045
1046 EL3WINDOW(3);
1047 outb((partner & 0x0140 ? 0x20 : 0) |
1048 (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl);
1049 EL3WINDOW(1);
1050
1051 }
1052 if (media & 0x0010)
1053 printk(KERN_INFO "%s: remote fault detected\n",
1054 dev->name);
1055 if (media & 0x0002)
1056 printk(KERN_INFO "%s: jabber detected\n", dev->name);
1057 lp->media_status = media;
1058 }
1059 spin_unlock_irqrestore(&lp->window_lock, flags);
1060
1061reschedule:
1062 lp->media.expires = jiffies + HZ;
1063 add_timer(&lp->media);
1064}
1065
1066static struct net_device_stats *el3_get_stats(struct net_device *dev)
1067{
1068 struct el3_private *lp = netdev_priv(dev);
1069
1070 if (netif_device_present(dev)) {
1071 unsigned long flags;
1072 spin_lock_irqsave(&lp->window_lock, flags);
1073 update_stats(dev);
1074 spin_unlock_irqrestore(&lp->window_lock, flags);
1075 }
1076 return &lp->stats;
1077}
1078
1079/* Update statistics.
1080 Suprisingly this need not be run single-threaded, but it effectively is.
1081 The counters clear when read, so the adds must merely be atomic.
1082 */
1083static void update_stats(struct net_device *dev)
1084{
1085 struct el3_private *lp = netdev_priv(dev);
1086 kio_addr_t ioaddr = dev->base_addr;
1087 u8 rx, tx, up;
1088
1089 DEBUG(2, "%s: updating the statistics.\n", dev->name);
1090
1091 if (inw(ioaddr+EL3_STATUS) == 0xffff) /* No card. */
1092 return;
1093
1094 /* Unlike the 3c509 we need not turn off stats updates while reading. */
1095 /* Switch to the stats window, and read everything. */
1096 EL3WINDOW(6);
1097 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
1098 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
1099 /* Multiple collisions. */ inb(ioaddr + 2);
1100 lp->stats.collisions += inb(ioaddr + 3);
1101 lp->stats.tx_window_errors += inb(ioaddr + 4);
1102 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
1103 lp->stats.tx_packets += inb(ioaddr + 6);
1104 up = inb(ioaddr + 9);
1105 lp->stats.tx_packets += (up&0x30) << 4;
1106 /* Rx packets */ inb(ioaddr + 7);
1107 /* Tx deferrals */ inb(ioaddr + 8);
1108 rx = inw(ioaddr + 10);
1109 tx = inw(ioaddr + 12);
1110
1111 EL3WINDOW(4);
1112 /* BadSSD */ inb(ioaddr + 12);
1113 up = inb(ioaddr + 13);
1114
1115 lp->stats.tx_bytes += tx + ((up & 0xf0) << 12);
1116
1117 EL3WINDOW(1);
1118}
1119
1120static int el3_rx(struct net_device *dev, int worklimit)
1121{
1122 struct el3_private *lp = netdev_priv(dev);
1123 kio_addr_t ioaddr = dev->base_addr;
1124 short rx_status;
1125
1126 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
1127 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus));
1128 while (!((rx_status = inw(ioaddr + RxStatus)) & 0x8000) &&
1129 (--worklimit >= 0)) {
1130 if (rx_status & 0x4000) { /* Error, update stats. */
1131 short error = rx_status & 0x3800;
1132 lp->stats.rx_errors++;
1133 switch (error) {
1134 case 0x0000: lp->stats.rx_over_errors++; break;
1135 case 0x0800: lp->stats.rx_length_errors++; break;
1136 case 0x1000: lp->stats.rx_frame_errors++; break;
1137 case 0x1800: lp->stats.rx_length_errors++; break;
1138 case 0x2000: lp->stats.rx_frame_errors++; break;
1139 case 0x2800: lp->stats.rx_crc_errors++; break;
1140 }
1141 } else {
1142 short pkt_len = rx_status & 0x7ff;
1143 struct sk_buff *skb;
1144
1145 skb = dev_alloc_skb(pkt_len+5);
1146
1147 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
1148 pkt_len, rx_status);
1149 if (skb != NULL) {
1150 skb->dev = dev;
1151 skb_reserve(skb, 2);
1152 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
1153 ((pkt_len+3)>>2));
1154 skb->protocol = eth_type_trans(skb, dev);
1155 netif_rx(skb);
1156 dev->last_rx = jiffies;
1157 lp->stats.rx_packets++;
1158 lp->stats.rx_bytes += pkt_len;
1159 } else {
1160 DEBUG(1, "%s: couldn't allocate a sk_buff of"
1161 " size %d.\n", dev->name, pkt_len);
1162 lp->stats.rx_dropped++;
1163 }
1164 }
1165 tc574_wait_for_completion(dev, RxDiscard);
1166 }
1167
1168 return worklimit;
1169}
1170
1171static void netdev_get_drvinfo(struct net_device *dev,
1172 struct ethtool_drvinfo *info)
1173{
1174 strcpy(info->driver, "3c574_cs");
1175}
1176
1177static struct ethtool_ops netdev_ethtool_ops = {
1178 .get_drvinfo = netdev_get_drvinfo,
1179};
1180
1181/* Provide ioctl() calls to examine the MII xcvr state. */
1182static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1183{
1184 struct el3_private *lp = netdev_priv(dev);
1185 kio_addr_t ioaddr = dev->base_addr;
1186 u16 *data = (u16 *)&rq->ifr_ifru;
1187 int phy = lp->phys & 0x1f;
1188
1189 DEBUG(2, "%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.\n",
1190 dev->name, rq->ifr_ifrn.ifrn_name, cmd,
1191 data[0], data[1], data[2], data[3]);
1192
1193 switch(cmd) {
1194 case SIOCGMIIPHY: /* Get the address of the PHY in use. */
1195 data[0] = phy;
1196 case SIOCGMIIREG: /* Read the specified MII register. */
1197 {
1198 int saved_window;
1199 unsigned long flags;
1200
1201 spin_lock_irqsave(&lp->window_lock, flags);
1202 saved_window = inw(ioaddr + EL3_CMD) >> 13;
1203 EL3WINDOW(4);
1204 data[3] = mdio_read(ioaddr, data[0] & 0x1f, data[1] & 0x1f);
1205 EL3WINDOW(saved_window);
1206 spin_unlock_irqrestore(&lp->window_lock, flags);
1207 return 0;
1208 }
1209 case SIOCSMIIREG: /* Write the specified MII register */
1210 {
1211 int saved_window;
1212 unsigned long flags;
1213
1214 if (!capable(CAP_NET_ADMIN))
1215 return -EPERM;
1216 spin_lock_irqsave(&lp->window_lock, flags);
1217 saved_window = inw(ioaddr + EL3_CMD) >> 13;
1218 EL3WINDOW(4);
1219 mdio_write(ioaddr, data[0] & 0x1f, data[1] & 0x1f, data[2]);
1220 EL3WINDOW(saved_window);
1221 spin_unlock_irqrestore(&lp->window_lock, flags);
1222 return 0;
1223 }
1224 default:
1225 return -EOPNOTSUPP;
1226 }
1227}
1228
1229/* The Odie chip has a 64 bin multicast filter, but the bit layout is not
1230 documented. Until it is we revert to receiving all multicast frames when
1231 any multicast reception is desired.
1232 Note: My other drivers emit a log message whenever promiscuous mode is
1233 entered to help detect password sniffers. This is less desirable on
1234 typical PC card machines, so we omit the message.
1235 */
1236
1237static void set_rx_mode(struct net_device *dev)
1238{
1239 kio_addr_t ioaddr = dev->base_addr;
1240
1241 if (dev->flags & IFF_PROMISC)
1242 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
1243 ioaddr + EL3_CMD);
1244 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
1245 outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD);
1246 else
1247 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1248}
1249
1250static int el3_close(struct net_device *dev)
1251{
1252 kio_addr_t ioaddr = dev->base_addr;
1253 struct el3_private *lp = netdev_priv(dev);
1254 dev_link_t *link = &lp->link;
1255
1256 DEBUG(2, "%s: shutting down ethercard.\n", dev->name);
1257
1258 if (DEV_OK(link)) {
1259 unsigned long flags;
1260
1261 /* Turn off statistics ASAP. We update lp->stats below. */
1262 outw(StatsDisable, ioaddr + EL3_CMD);
1263
1264 /* Disable the receiver and transmitter. */
1265 outw(RxDisable, ioaddr + EL3_CMD);
1266 outw(TxDisable, ioaddr + EL3_CMD);
1267
1268 /* Note: Switching to window 0 may disable the IRQ. */
1269 EL3WINDOW(0);
1270 spin_lock_irqsave(&lp->window_lock, flags);
1271 update_stats(dev);
1272 spin_unlock_irqrestore(&lp->window_lock, flags);
b9a6eaff
DR		 1273
1274 /* force interrupts off */
1275 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1da177e4
LT		 1276 }
1277
1278 link->open--;
1279 netif_stop_queue(dev);
1280 del_timer_sync(&lp->media);
1281
1282 return 0;
1283}
1284
270b6e94
DB		 1285static struct pcmcia_device_id tc574_ids[] = {
1286 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0574),
1287 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0556, "3CCFEM556.cis"),
1288 PCMCIA_DEVICE_NULL,
1289};
1290MODULE_DEVICE_TABLE(pcmcia, tc574_ids);
1291
1da177e4
LT		 1292static struct pcmcia_driver tc574_driver = {
1293 .owner = THIS_MODULE,
1294 .drv = {
1295 .name = "3c574_cs",
1296 },
1297 .attach = tc574_attach,
1e212f36 1298 .event = tc574_event,
cc3b4866 1299 .remove = tc574_detach,
270b6e94 1300 .id_table = tc574_ids,
98e4c28b
DB		 1301 .suspend = tc574_suspend,
1302 .resume = tc574_resume,
1da177e4
LT		 1303};
1304
1305static int __init init_tc574(void)
1306{
1307 return pcmcia_register_driver(&tc574_driver);
1308}
1309
1310static void __exit exit_tc574(void)
1311{
1312 pcmcia_unregister_driver(&tc574_driver);
1313 BUG_ON(dev_list != NULL);
1314}
1315
1316module_init(init_tc574);
1317module_exit(exit_tc574);
Linux kernel - Deliverables
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