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[PATCH] pcmcia: merge suspend into device model
[linux-2.6-block.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);
256static void tc574_detach(dev_link_t *);
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);
319 tc574_detach(link);
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
335static void tc574_detach(dev_link_t *link)
336{
337 struct net_device *dev = link->priv;
338 dev_link_t **linkp;
339
340 DEBUG(0, "3c574_detach(0x%p)\n", link);
341
342 /* Locate device structure */
343 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
344 if (*linkp == link) break;
345 if (*linkp == NULL)
346 return;
347
348 if (link->dev)
349 unregister_netdev(dev);
350
351 if (link->state & DEV_CONFIG)
352 tc574_release(link);
353
354 if (link->handle)
355 pcmcia_deregister_client(link->handle);
356
357 /* Unlink device structure, free bits */
358 *linkp = link->next;
359 free_netdev(dev);
360} /* tc574_detach */
361
362/*
363 tc574_config() is scheduled to run after a CARD_INSERTION event
364 is received, to configure the PCMCIA socket, and to make the
365 ethernet device available to the system.
366*/
367
368#define CS_CHECK(fn, ret) \
369 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
370
371static char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
372
373static void tc574_config(dev_link_t *link)
374{
375 client_handle_t handle = link->handle;
376 struct net_device *dev = link->priv;
377 struct el3_private *lp = netdev_priv(dev);
378 tuple_t tuple;
379 cisparse_t parse;
380 unsigned short buf[32];
381 int last_fn, last_ret, i, j;
382 kio_addr_t ioaddr;
383 u16 *phys_addr;
384 char *cardname;
385 union wn3_config config;
386
387 phys_addr = (u16 *)dev->dev_addr;
388
389 DEBUG(0, "3c574_config(0x%p)\n", link);
390
391 tuple.Attributes = 0;
392 tuple.DesiredTuple = CISTPL_CONFIG;
393 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
394 tuple.TupleData = (cisdata_t *)buf;
395 tuple.TupleDataMax = 64;
396 tuple.TupleOffset = 0;
397 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
398 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
399 link->conf.ConfigBase = parse.config.base;
400 link->conf.Present = parse.config.rmask[0];
401
402 /* Configure card */
403 link->state |= DEV_CONFIG;
404
405 link->io.IOAddrLines = 16;
406 for (i = j = 0; j < 0x400; j += 0x20) {
407 link->io.BasePort1 = j ^ 0x300;
408 i = pcmcia_request_io(link->handle, &link->io);
409 if (i == CS_SUCCESS) break;
410 }
411 if (i != CS_SUCCESS) {
412 cs_error(link->handle, RequestIO, i);
413 goto failed;
414 }
415 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
416 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
417
418 dev->irq = link->irq.AssignedIRQ;
419 dev->base_addr = link->io.BasePort1;
420
421 ioaddr = dev->base_addr;
422
423 /* The 3c574 normally uses an EEPROM for configuration info, including
424 the hardware address. The future products may include a modem chip
425 and put the address in the CIS. */
426 tuple.DesiredTuple = 0x88;
427 if (pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) {
428 pcmcia_get_tuple_data(handle, &tuple);
429 for (i = 0; i < 3; i++)
430 phys_addr[i] = htons(buf[i]);
431 } else {
432 EL3WINDOW(0);
433 for (i = 0; i < 3; i++)
434 phys_addr[i] = htons(read_eeprom(ioaddr, i + 10));
435 if (phys_addr[0] == 0x6060) {
436 printk(KERN_NOTICE "3c574_cs: IO port conflict at 0x%03lx"
437 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
438 goto failed;
439 }
440 }
441 tuple.DesiredTuple = CISTPL_VERS_1;
442 if (pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS &&
443 pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS &&
444 pcmcia_parse_tuple(handle, &tuple, &parse) == CS_SUCCESS) {
445 cardname = parse.version_1.str + parse.version_1.ofs[1];
446 } else
447 cardname = "3Com 3c574";
448
449 {
450 u_char mcr;
451 outw(2<<11, ioaddr + RunnerRdCtrl);
452 mcr = inb(ioaddr + 2);
453 outw(0<<11, ioaddr + RunnerRdCtrl);
454 printk(KERN_INFO " ASIC rev %d,", mcr>>3);
455 EL3WINDOW(3);
456 config.i = inl(ioaddr + Wn3_Config);
457 lp->default_media = config.u.xcvr;
458 lp->autoselect = config.u.autoselect;
459 }
460
461 init_timer(&lp->media);
462
463 {
464 int phy;
465
466 /* Roadrunner only: Turn on the MII transceiver */
467 outw(0x8040, ioaddr + Wn3_Options);
468 mdelay(1);
469 outw(0xc040, ioaddr + Wn3_Options);
470 tc574_wait_for_completion(dev, TxReset);
471 tc574_wait_for_completion(dev, RxReset);
472 mdelay(1);
473 outw(0x8040, ioaddr + Wn3_Options);
474
475 EL3WINDOW(4);
476 for (phy = 1; phy <= 32; phy++) {
477 int mii_status;
478 mdio_sync(ioaddr, 32);
479 mii_status = mdio_read(ioaddr, phy & 0x1f, 1);
480 if (mii_status != 0xffff) {
481 lp->phys = phy & 0x1f;
482 DEBUG(0, " MII transceiver at index %d, status %x.\n",
483 phy, mii_status);
484 if ((mii_status & 0x0040) == 0)
485 mii_preamble_required = 1;
486 break;
487 }
488 }
489 if (phy > 32) {
490 printk(KERN_NOTICE " No MII transceivers found!\n");
491 goto failed;
492 }
493 i = mdio_read(ioaddr, lp->phys, 16) | 0x40;
494 mdio_write(ioaddr, lp->phys, 16, i);
495 lp->advertising = mdio_read(ioaddr, lp->phys, 4);
496 if (full_duplex) {
497 /* Only advertise the FD media types. */
498 lp->advertising &= ~0x02a0;
499 mdio_write(ioaddr, lp->phys, 4, lp->advertising);
500 }
501 }
502
503 link->state &= ~DEV_CONFIG_PENDING;
504 link->dev = &lp->node;
505 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
506
507 if (register_netdev(dev) != 0) {
508 printk(KERN_NOTICE "3c574_cs: register_netdev() failed\n");
509 link->dev = NULL;
510 goto failed;
511 }
512
513 strcpy(lp->node.dev_name, dev->name);
514
515 printk(KERN_INFO "%s: %s at io %#3lx, irq %d, hw_addr ",
516 dev->name, cardname, dev->base_addr, dev->irq);
517 for (i = 0; i < 6; i++)
518 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : ".\n"));
519 printk(" %dK FIFO split %s Rx:Tx, %sMII interface.\n",
520 8 << config.u.ram_size, ram_split[config.u.ram_split],
521 config.u.autoselect ? "autoselect " : "");
522
523 return;
524
525cs_failed:
526 cs_error(link->handle, last_fn, last_ret);
527failed:
528 tc574_release(link);
529 return;
530
531} /* tc574_config */
532
533/*
534 After a card is removed, tc574_release() will unregister the net
535 device, and release the PCMCIA configuration. If the device is
536 still open, this will be postponed until it is closed.
537*/
538
539static void tc574_release(dev_link_t *link)
540{
541 DEBUG(0, "3c574_release(0x%p)\n", link);
542
543 pcmcia_release_configuration(link->handle);
544 pcmcia_release_io(link->handle, &link->io);
545 pcmcia_release_irq(link->handle, &link->irq);
546
547 link->state &= ~DEV_CONFIG;
548}
549
98e4c28b
DB		 550static int tc574_suspend(struct pcmcia_device *p_dev)
551{
552 dev_link_t *link = dev_to_instance(p_dev);
553 struct net_device *dev = link->priv;
554
555 link->state |= DEV_SUSPEND;
556 if (link->state & DEV_CONFIG) {
557 if (link->open)
558 netif_device_detach(dev);
559 pcmcia_release_configuration(link->handle);
560 }
561
562 return 0;
563}
564
565static int tc574_resume(struct pcmcia_device *p_dev)
566{
567 dev_link_t *link = dev_to_instance(p_dev);
568 struct net_device *dev = link->priv;
569
570 link->state &= ~DEV_SUSPEND;
571 if (link->state & DEV_CONFIG) {
572 pcmcia_request_configuration(link->handle, &link->conf);
573 if (link->open) {
574 tc574_reset(dev);
575 netif_device_attach(dev);
576 }
577 }
578
579 return 0;
580}
581
1da177e4
LT		 582/*
583 The card status event handler. Mostly, this schedules other
584 stuff to run after an event is received. A CARD_REMOVAL event
585 also sets some flags to discourage the net drivers from trying
586 to talk to the card any more.
587*/
588
589static int tc574_event(event_t event, int priority,
590 event_callback_args_t *args)
591{
592 dev_link_t *link = args->client_data;
593 struct net_device *dev = link->priv;
594
595 DEBUG(1, "3c574_event(0x%06x)\n", event);
596
597 switch (event) {
598 case CS_EVENT_CARD_REMOVAL:
599 link->state &= ~DEV_PRESENT;
600 if (link->state & DEV_CONFIG)
601 netif_device_detach(dev);
602 break;
603 case CS_EVENT_CARD_INSERTION:
604 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
605 tc574_config(link);
606 break;
1da177e4
LT		 607 }
608 return 0;
609} /* tc574_event */
610
611static void dump_status(struct net_device *dev)
612{
613 kio_addr_t ioaddr = dev->base_addr;
614 EL3WINDOW(1);
615 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
616 "%02x, tx free %04x\n", inw(ioaddr+EL3_STATUS),
617 inw(ioaddr+RxStatus), inb(ioaddr+TxStatus),
618 inw(ioaddr+TxFree));
619 EL3WINDOW(4);
620 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
621 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
622 inw(ioaddr+0x08), inw(ioaddr+0x0a));
623 EL3WINDOW(1);
624}
625
626/*
627 Use this for commands that may take time to finish
628*/
629static void tc574_wait_for_completion(struct net_device *dev, int cmd)
630{
631 int i = 1500;
632 outw(cmd, dev->base_addr + EL3_CMD);
633 while (--i > 0)
634 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
635 if (i == 0)
636 printk(KERN_NOTICE "%s: command 0x%04x did not complete!\n", dev->name, cmd);
637}
638
639/* Read a word from the EEPROM using the regular EEPROM access register.
640 Assume that we are in register window zero.
641 */
642static unsigned short read_eeprom(kio_addr_t ioaddr, int index)
643{
644 int timer;
645 outw(EEPROM_Read + index, ioaddr + Wn0EepromCmd);
646 /* Pause for at least 162 usec for the read to take place. */
647 for (timer = 1620; timer >= 0; timer--) {
648 if ((inw(ioaddr + Wn0EepromCmd) & 0x8000) == 0)
649 break;
650 }
651 return inw(ioaddr + Wn0EepromData);
652}
653
654/* MII transceiver control section.
655 Read and write the MII registers using software-generated serial
656 MDIO protocol. See the MII specifications or DP83840A data sheet
657 for details.
658 The maxium data clock rate is 2.5 Mhz. The timing is easily met by the
659 slow PC card interface. */
660
661#define MDIO_SHIFT_CLK 0x01
662#define MDIO_DIR_WRITE 0x04
663#define MDIO_DATA_WRITE0 (0x00 | MDIO_DIR_WRITE)
664#define MDIO_DATA_WRITE1 (0x02 | MDIO_DIR_WRITE)
665#define MDIO_DATA_READ 0x02
666#define MDIO_ENB_IN 0x00
667
668/* Generate the preamble required for initial synchronization and
669 a few older transceivers. */
670static void mdio_sync(kio_addr_t ioaddr, int bits)
671{
672 kio_addr_t mdio_addr = ioaddr + Wn4_PhysicalMgmt;
673
674 /* Establish sync by sending at least 32 logic ones. */
675 while (-- bits >= 0) {
676 outw(MDIO_DATA_WRITE1, mdio_addr);
677 outw(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, mdio_addr);
678 }
679}
680
681static int mdio_read(kio_addr_t ioaddr, int phy_id, int location)
682{
683 int i;
684 int read_cmd = (0xf6 << 10) | (phy_id << 5) | location;
685 unsigned int retval = 0;
686 kio_addr_t mdio_addr = ioaddr + Wn4_PhysicalMgmt;
687
688 if (mii_preamble_required)
689 mdio_sync(ioaddr, 32);
690
691 /* Shift the read command bits out. */
692 for (i = 14; i >= 0; i--) {
693 int dataval = (read_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
694 outw(dataval, mdio_addr);
695 outw(dataval | MDIO_SHIFT_CLK, mdio_addr);
696 }
697 /* Read the two transition, 16 data, and wire-idle bits. */
698 for (i = 19; i > 0; i--) {
699 outw(MDIO_ENB_IN, mdio_addr);
700 retval = (retval << 1) | ((inw(mdio_addr) & MDIO_DATA_READ) ? 1 : 0);
701 outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr);
702 }
703 return (retval>>1) & 0xffff;
704}
705
706static void mdio_write(kio_addr_t ioaddr, int phy_id, int location, int value)
707{
708 int write_cmd = 0x50020000 | (phy_id << 23) | (location << 18) | value;
709 kio_addr_t mdio_addr = ioaddr + Wn4_PhysicalMgmt;
710 int i;
711
712 if (mii_preamble_required)
713 mdio_sync(ioaddr, 32);
714
715 /* Shift the command bits out. */
716 for (i = 31; i >= 0; i--) {
717 int dataval = (write_cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0;
718 outw(dataval, mdio_addr);
719 outw(dataval | MDIO_SHIFT_CLK, mdio_addr);
720 }
721 /* Leave the interface idle. */
722 for (i = 1; i >= 0; i--) {
723 outw(MDIO_ENB_IN, mdio_addr);
724 outw(MDIO_ENB_IN | MDIO_SHIFT_CLK, mdio_addr);
725 }
726
727 return;
728}
729
730/* Reset and restore all of the 3c574 registers. */
731static void tc574_reset(struct net_device *dev)
732{
733 struct el3_private *lp = netdev_priv(dev);
734 int i;
735 kio_addr_t ioaddr = dev->base_addr;
736 unsigned long flags;
737
738 tc574_wait_for_completion(dev, TotalReset|0x10);
739
740 spin_lock_irqsave(&lp->window_lock, flags);
741 /* Clear any transactions in progress. */
742 outw(0, ioaddr + RunnerWrCtrl);
743 outw(0, ioaddr + RunnerRdCtrl);
744
745 /* Set the station address and mask. */
746 EL3WINDOW(2);
747 for (i = 0; i < 6; i++)
748 outb(dev->dev_addr[i], ioaddr + i);
749 for (; i < 12; i+=2)
750 outw(0, ioaddr + i);
751
752 /* Reset config options */
753 EL3WINDOW(3);
754 outb((dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl);
755 outl((lp->autoselect ? 0x01000000 : 0) | 0x0062001b,
756 ioaddr + Wn3_Config);
757 /* Roadrunner only: Turn on the MII transceiver. */
758 outw(0x8040, ioaddr + Wn3_Options);
759 mdelay(1);
760 outw(0xc040, ioaddr + Wn3_Options);
761 EL3WINDOW(1);
762 spin_unlock_irqrestore(&lp->window_lock, flags);
763
764 tc574_wait_for_completion(dev, TxReset);
765 tc574_wait_for_completion(dev, RxReset);
766 mdelay(1);
767 spin_lock_irqsave(&lp->window_lock, flags);
768 EL3WINDOW(3);
769 outw(0x8040, ioaddr + Wn3_Options);
770
771 /* Switch to the stats window, and clear all stats by reading. */
772 outw(StatsDisable, ioaddr + EL3_CMD);
773 EL3WINDOW(6);
774 for (i = 0; i < 10; i++)
775 inb(ioaddr + i);
776 inw(ioaddr + 10);
777 inw(ioaddr + 12);
778 EL3WINDOW(4);
779 inb(ioaddr + 12);
780 inb(ioaddr + 13);
781
782 /* .. enable any extra statistics bits.. */
783 outw(0x0040, ioaddr + Wn4_NetDiag);
784
785 EL3WINDOW(1);
786 spin_unlock_irqrestore(&lp->window_lock, flags);
787
788 /* .. re-sync MII and re-fill what NWay is advertising. */
789 mdio_sync(ioaddr, 32);
790 mdio_write(ioaddr, lp->phys, 4, lp->advertising);
791 if (!auto_polarity) {
792 /* works for TDK 78Q2120 series MII's */
793 int i = mdio_read(ioaddr, lp->phys, 16) | 0x20;
794 mdio_write(ioaddr, lp->phys, 16, i);
795 }
796
797 spin_lock_irqsave(&lp->window_lock, flags);
798 /* Switch to register set 1 for normal use, just for TxFree. */
799 set_rx_mode(dev);
800 spin_unlock_irqrestore(&lp->window_lock, flags);
801 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
802 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
803 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
804 /* Allow status bits to be seen. */
805 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
806 /* Ack all pending events, and set active indicator mask. */
807 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
808 ioaddr + EL3_CMD);
809 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
810 | AdapterFailure | RxEarly, ioaddr + EL3_CMD);
811}
812
813static int el3_open(struct net_device *dev)
814{
815 struct el3_private *lp = netdev_priv(dev);
816 dev_link_t *link = &lp->link;
817
818 if (!DEV_OK(link))
819 return -ENODEV;
820
821 link->open++;
822 netif_start_queue(dev);
823
824 tc574_reset(dev);
825 lp->media.function = &media_check;
826 lp->media.data = (unsigned long) dev;
827 lp->media.expires = jiffies + HZ;
828 add_timer(&lp->media);
829
830 DEBUG(2, "%s: opened, status %4.4x.\n",
831 dev->name, inw(dev->base_addr + EL3_STATUS));
832
833 return 0;
834}
835
836static void el3_tx_timeout(struct net_device *dev)
837{
838 struct el3_private *lp = netdev_priv(dev);
839 kio_addr_t ioaddr = dev->base_addr;
840
841 printk(KERN_NOTICE "%s: Transmit timed out!\n", dev->name);
842 dump_status(dev);
843 lp->stats.tx_errors++;
844 dev->trans_start = jiffies;
845 /* Issue TX_RESET and TX_START commands. */
846 tc574_wait_for_completion(dev, TxReset);
847 outw(TxEnable, ioaddr + EL3_CMD);
848 netif_wake_queue(dev);
849}
850
851static void pop_tx_status(struct net_device *dev)
852{
853 struct el3_private *lp = netdev_priv(dev);
854 kio_addr_t ioaddr = dev->base_addr;
855 int i;
856
857 /* Clear the Tx status stack. */
858 for (i = 32; i > 0; i--) {
859 u_char tx_status = inb(ioaddr + TxStatus);
860 if (!(tx_status & 0x84))
861 break;
862 /* reset transmitter on jabber error or underrun */
863 if (tx_status & 0x30)
864 tc574_wait_for_completion(dev, TxReset);
865 if (tx_status & 0x38) {
866 DEBUG(1, "%s: transmit error: status 0x%02x\n",
867 dev->name, tx_status);
868 outw(TxEnable, ioaddr + EL3_CMD);
869 lp->stats.tx_aborted_errors++;
870 }
871 outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */
872 }
873}
874
875static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
876{
877 kio_addr_t ioaddr = dev->base_addr;
878 struct el3_private *lp = netdev_priv(dev);
879 unsigned long flags;
880
881 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
882 "status %4.4x.\n", dev->name, (long)skb->len,
883 inw(ioaddr + EL3_STATUS));
884
885 spin_lock_irqsave(&lp->window_lock, flags);
886 outw(skb->len, ioaddr + TX_FIFO);
887 outw(0, ioaddr + TX_FIFO);
888 outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2);
889
890 dev->trans_start = jiffies;
891
892 /* TxFree appears only in Window 1, not offset 0x1c. */
893 if (inw(ioaddr + TxFree) <= 1536) {
894 netif_stop_queue(dev);
895 /* Interrupt us when the FIFO has room for max-sized packet.
896 The threshold is in units of dwords. */
897 outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD);
898 }
899
900 pop_tx_status(dev);
901 spin_unlock_irqrestore(&lp->window_lock, flags);
902 dev_kfree_skb(skb);
903 return 0;
904}
905
906/* The EL3 interrupt handler. */
907static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
908{
909 struct net_device *dev = (struct net_device *) dev_id;
910 struct el3_private *lp = netdev_priv(dev);
911 kio_addr_t ioaddr;
912 unsigned status;
913 int work_budget = max_interrupt_work;
914 int handled = 0;
915
916 if (!netif_device_present(dev))
917 return IRQ_NONE;
918 ioaddr = dev->base_addr;
919
920 DEBUG(3, "%s: interrupt, status %4.4x.\n",
921 dev->name, inw(ioaddr + EL3_STATUS));
922
923 spin_lock(&lp->window_lock);
924
925 while ((status = inw(ioaddr + EL3_STATUS)) &
926 (IntLatch | RxComplete | RxEarly | StatsFull)) {
927 if (!netif_device_present(dev) ||
928 ((status & 0xe000) != 0x2000)) {
929 DEBUG(1, "%s: Interrupt from dead card\n", dev->name);
930 break;
931 }
932
933 handled = 1;
934
935 if (status & RxComplete)
936 work_budget = el3_rx(dev, work_budget);
937
938 if (status & TxAvailable) {
939 DEBUG(3, " TX room bit was handled.\n");
940 /* There's room in the FIFO for a full-sized packet. */
941 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
942 netif_wake_queue(dev);
943 }
944
945 if (status & TxComplete)
946 pop_tx_status(dev);
947
948 if (status & (AdapterFailure | RxEarly | StatsFull)) {
949 /* Handle all uncommon interrupts. */
950 if (status & StatsFull)
951 update_stats(dev);
952 if (status & RxEarly) {
953 work_budget = el3_rx(dev, work_budget);
954 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
955 }
956 if (status & AdapterFailure) {
957 u16 fifo_diag;
958 EL3WINDOW(4);
959 fifo_diag = inw(ioaddr + Wn4_FIFODiag);
960 EL3WINDOW(1);
961 printk(KERN_NOTICE "%s: adapter failure, FIFO diagnostic"
962 " register %04x.\n", dev->name, fifo_diag);
963 if (fifo_diag & 0x0400) {
964 /* Tx overrun */
965 tc574_wait_for_completion(dev, TxReset);
966 outw(TxEnable, ioaddr + EL3_CMD);
967 }
968 if (fifo_diag & 0x2000) {
969 /* Rx underrun */
970 tc574_wait_for_completion(dev, RxReset);
971 set_rx_mode(dev);
972 outw(RxEnable, ioaddr + EL3_CMD);
973 }
974 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
975 }
976 }
977
978 if (--work_budget < 0) {
979 DEBUG(0, "%s: Too much work in interrupt, "
980 "status %4.4x.\n", dev->name, status);
981 /* Clear all interrupts */
982 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
983 break;
984 }
985 /* Acknowledge the IRQ. */
986 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
987 }
988
989 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
990 dev->name, inw(ioaddr + EL3_STATUS));
991
992 spin_unlock(&lp->window_lock);
993 return IRQ_RETVAL(handled);
994}
995
996/*
997 This timer serves two purposes: to check for missed interrupts
998 (and as a last resort, poll the NIC for events), and to monitor
999 the MII, reporting changes in cable status.
1000*/
1001static void media_check(unsigned long arg)
1002{
1003 struct net_device *dev = (struct net_device *) arg;
1004 struct el3_private *lp = netdev_priv(dev);
1005 kio_addr_t ioaddr = dev->base_addr;
1006 unsigned long flags;
1007 unsigned short /* cable, */ media, partner;
1008
1009 if (!netif_device_present(dev))
1010 goto reschedule;
1011
1012 /* Check for pending interrupt with expired latency timer: with
1013 this, we can limp along even if the interrupt is blocked */
1014 if ((inw(ioaddr + EL3_STATUS) & IntLatch) && (inb(ioaddr + Timer) == 0xff)) {
1015 if (!lp->fast_poll)
1016 printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
1017 el3_interrupt(dev->irq, lp, NULL);
1018 lp->fast_poll = HZ;
1019 }
1020 if (lp->fast_poll) {
1021 lp->fast_poll--;
1022 lp->media.expires = jiffies + 2*HZ/100;
1023 add_timer(&lp->media);
1024 return;
1025 }
1026
1027 spin_lock_irqsave(&lp->window_lock, flags);
1028 EL3WINDOW(4);
1029 media = mdio_read(ioaddr, lp->phys, 1);
1030 partner = mdio_read(ioaddr, lp->phys, 5);
1031 EL3WINDOW(1);
1032
1033 if (media != lp->media_status) {
1034 if ((media ^ lp->media_status) & 0x0004)
1035 printk(KERN_INFO "%s: %s link beat\n", dev->name,
1036 (lp->media_status & 0x0004) ? "lost" : "found");
1037 if ((media ^ lp->media_status) & 0x0020) {
1038 lp->partner = 0;
1039 if (lp->media_status & 0x0020) {
1040 printk(KERN_INFO "%s: autonegotiation restarted\n",
1041 dev->name);
1042 } else if (partner) {
1043 partner &= lp->advertising;
1044 lp->partner = partner;
1045 printk(KERN_INFO "%s: autonegotiation complete: "
1046 "%sbaseT-%cD selected\n", dev->name,
1047 ((partner & 0x0180) ? "100" : "10"),
1048 ((partner & 0x0140) ? 'F' : 'H'));
1049 } else {
1050 printk(KERN_INFO "%s: link partner did not autonegotiate\n",
1051 dev->name);
1052 }
1053
1054 EL3WINDOW(3);
1055 outb((partner & 0x0140 ? 0x20 : 0) |
1056 (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl);
1057 EL3WINDOW(1);
1058
1059 }
1060 if (media & 0x0010)
1061 printk(KERN_INFO "%s: remote fault detected\n",
1062 dev->name);
1063 if (media & 0x0002)
1064 printk(KERN_INFO "%s: jabber detected\n", dev->name);
1065 lp->media_status = media;
1066 }
1067 spin_unlock_irqrestore(&lp->window_lock, flags);
1068
1069reschedule:
1070 lp->media.expires = jiffies + HZ;
1071 add_timer(&lp->media);
1072}
1073
1074static struct net_device_stats *el3_get_stats(struct net_device *dev)
1075{
1076 struct el3_private *lp = netdev_priv(dev);
1077
1078 if (netif_device_present(dev)) {
1079 unsigned long flags;
1080 spin_lock_irqsave(&lp->window_lock, flags);
1081 update_stats(dev);
1082 spin_unlock_irqrestore(&lp->window_lock, flags);
1083 }
1084 return &lp->stats;
1085}
1086
1087/* Update statistics.
1088 Suprisingly this need not be run single-threaded, but it effectively is.
1089 The counters clear when read, so the adds must merely be atomic.
1090 */
1091static void update_stats(struct net_device *dev)
1092{
1093 struct el3_private *lp = netdev_priv(dev);
1094 kio_addr_t ioaddr = dev->base_addr;
1095 u8 rx, tx, up;
1096
1097 DEBUG(2, "%s: updating the statistics.\n", dev->name);
1098
1099 if (inw(ioaddr+EL3_STATUS) == 0xffff) /* No card. */
1100 return;
1101
1102 /* Unlike the 3c509 we need not turn off stats updates while reading. */
1103 /* Switch to the stats window, and read everything. */
1104 EL3WINDOW(6);
1105 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
1106 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
1107 /* Multiple collisions. */ inb(ioaddr + 2);
1108 lp->stats.collisions += inb(ioaddr + 3);
1109 lp->stats.tx_window_errors += inb(ioaddr + 4);
1110 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
1111 lp->stats.tx_packets += inb(ioaddr + 6);
1112 up = inb(ioaddr + 9);
1113 lp->stats.tx_packets += (up&0x30) << 4;
1114 /* Rx packets */ inb(ioaddr + 7);
1115 /* Tx deferrals */ inb(ioaddr + 8);
1116 rx = inw(ioaddr + 10);
1117 tx = inw(ioaddr + 12);
1118
1119 EL3WINDOW(4);
1120 /* BadSSD */ inb(ioaddr + 12);
1121 up = inb(ioaddr + 13);
1122
1123 lp->stats.tx_bytes += tx + ((up & 0xf0) << 12);
1124
1125 EL3WINDOW(1);
1126}
1127
1128static int el3_rx(struct net_device *dev, int worklimit)
1129{
1130 struct el3_private *lp = netdev_priv(dev);
1131 kio_addr_t ioaddr = dev->base_addr;
1132 short rx_status;
1133
1134 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
1135 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus));
1136 while (!((rx_status = inw(ioaddr + RxStatus)) & 0x8000) &&
1137 (--worklimit >= 0)) {
1138 if (rx_status & 0x4000) { /* Error, update stats. */
1139 short error = rx_status & 0x3800;
1140 lp->stats.rx_errors++;
1141 switch (error) {
1142 case 0x0000: lp->stats.rx_over_errors++; break;
1143 case 0x0800: lp->stats.rx_length_errors++; break;
1144 case 0x1000: lp->stats.rx_frame_errors++; break;
1145 case 0x1800: lp->stats.rx_length_errors++; break;
1146 case 0x2000: lp->stats.rx_frame_errors++; break;
1147 case 0x2800: lp->stats.rx_crc_errors++; break;
1148 }
1149 } else {
1150 short pkt_len = rx_status & 0x7ff;
1151 struct sk_buff *skb;
1152
1153 skb = dev_alloc_skb(pkt_len+5);
1154
1155 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
1156 pkt_len, rx_status);
1157 if (skb != NULL) {
1158 skb->dev = dev;
1159 skb_reserve(skb, 2);
1160 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
1161 ((pkt_len+3)>>2));
1162 skb->protocol = eth_type_trans(skb, dev);
1163 netif_rx(skb);
1164 dev->last_rx = jiffies;
1165 lp->stats.rx_packets++;
1166 lp->stats.rx_bytes += pkt_len;
1167 } else {
1168 DEBUG(1, "%s: couldn't allocate a sk_buff of"
1169 " size %d.\n", dev->name, pkt_len);
1170 lp->stats.rx_dropped++;
1171 }
1172 }
1173 tc574_wait_for_completion(dev, RxDiscard);
1174 }
1175
1176 return worklimit;
1177}
1178
1179static void netdev_get_drvinfo(struct net_device *dev,
1180 struct ethtool_drvinfo *info)
1181{
1182 strcpy(info->driver, "3c574_cs");
1183}
1184
1185static struct ethtool_ops netdev_ethtool_ops = {
1186 .get_drvinfo = netdev_get_drvinfo,
1187};
1188
1189/* Provide ioctl() calls to examine the MII xcvr state. */
1190static int el3_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1191{
1192 struct el3_private *lp = netdev_priv(dev);
1193 kio_addr_t ioaddr = dev->base_addr;
1194 u16 *data = (u16 *)&rq->ifr_ifru;
1195 int phy = lp->phys & 0x1f;
1196
1197 DEBUG(2, "%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.\n",
1198 dev->name, rq->ifr_ifrn.ifrn_name, cmd,
1199 data[0], data[1], data[2], data[3]);
1200
1201 switch(cmd) {
1202 case SIOCGMIIPHY: /* Get the address of the PHY in use. */
1203 data[0] = phy;
1204 case SIOCGMIIREG: /* Read the specified MII register. */
1205 {
1206 int saved_window;
1207 unsigned long flags;
1208
1209 spin_lock_irqsave(&lp->window_lock, flags);
1210 saved_window = inw(ioaddr + EL3_CMD) >> 13;
1211 EL3WINDOW(4);
1212 data[3] = mdio_read(ioaddr, data[0] & 0x1f, data[1] & 0x1f);
1213 EL3WINDOW(saved_window);
1214 spin_unlock_irqrestore(&lp->window_lock, flags);
1215 return 0;
1216 }
1217 case SIOCSMIIREG: /* Write the specified MII register */
1218 {
1219 int saved_window;
1220 unsigned long flags;
1221
1222 if (!capable(CAP_NET_ADMIN))
1223 return -EPERM;
1224 spin_lock_irqsave(&lp->window_lock, flags);
1225 saved_window = inw(ioaddr + EL3_CMD) >> 13;
1226 EL3WINDOW(4);
1227 mdio_write(ioaddr, data[0] & 0x1f, data[1] & 0x1f, data[2]);
1228 EL3WINDOW(saved_window);
1229 spin_unlock_irqrestore(&lp->window_lock, flags);
1230 return 0;
1231 }
1232 default:
1233 return -EOPNOTSUPP;
1234 }
1235}
1236
1237/* The Odie chip has a 64 bin multicast filter, but the bit layout is not
1238 documented. Until it is we revert to receiving all multicast frames when
1239 any multicast reception is desired.
1240 Note: My other drivers emit a log message whenever promiscuous mode is
1241 entered to help detect password sniffers. This is less desirable on
1242 typical PC card machines, so we omit the message.
1243 */
1244
1245static void set_rx_mode(struct net_device *dev)
1246{
1247 kio_addr_t ioaddr = dev->base_addr;
1248
1249 if (dev->flags & IFF_PROMISC)
1250 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
1251 ioaddr + EL3_CMD);
1252 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
1253 outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD);
1254 else
1255 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1256}
1257
1258static int el3_close(struct net_device *dev)
1259{
1260 kio_addr_t ioaddr = dev->base_addr;
1261 struct el3_private *lp = netdev_priv(dev);
1262 dev_link_t *link = &lp->link;
1263
1264 DEBUG(2, "%s: shutting down ethercard.\n", dev->name);
1265
1266 if (DEV_OK(link)) {
1267 unsigned long flags;
1268
1269 /* Turn off statistics ASAP. We update lp->stats below. */
1270 outw(StatsDisable, ioaddr + EL3_CMD);
1271
1272 /* Disable the receiver and transmitter. */
1273 outw(RxDisable, ioaddr + EL3_CMD);
1274 outw(TxDisable, ioaddr + EL3_CMD);
1275
1276 /* Note: Switching to window 0 may disable the IRQ. */
1277 EL3WINDOW(0);
1278 spin_lock_irqsave(&lp->window_lock, flags);
1279 update_stats(dev);
1280 spin_unlock_irqrestore(&lp->window_lock, flags);
b9a6eaff
DR		 1281
1282 /* force interrupts off */
1283 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1da177e4
LT		 1284 }
1285
1286 link->open--;
1287 netif_stop_queue(dev);
1288 del_timer_sync(&lp->media);
1289
1290 return 0;
1291}
1292
270b6e94
DB		 1293static struct pcmcia_device_id tc574_ids[] = {
1294 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0574),
1295 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0556, "3CCFEM556.cis"),
1296 PCMCIA_DEVICE_NULL,
1297};
1298MODULE_DEVICE_TABLE(pcmcia, tc574_ids);
1299
1da177e4
LT		 1300static struct pcmcia_driver tc574_driver = {
1301 .owner = THIS_MODULE,
1302 .drv = {
1303 .name = "3c574_cs",
1304 },
1305 .attach = tc574_attach,
1e212f36 1306 .event = tc574_event,
1da177e4 1307 .detach = tc574_detach,
270b6e94 1308 .id_table = tc574_ids,
98e4c28b
DB		 1309 .suspend = tc574_suspend,
1310 .resume = tc574_resume,
1da177e4
LT		 1311};
1312
1313static int __init init_tc574(void)
1314{
1315 return pcmcia_register_driver(&tc574_driver);
1316}
1317
1318static void __exit exit_tc574(void)
1319{
1320 pcmcia_unregister_driver(&tc574_driver);
1321 BUG_ON(dev_list != NULL);
1322}
1323
1324module_init(init_tc574);
1325module_exit(exit_tc574);
Linux 6.x block layer and io_uring tree(s)