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