Loading...
1/* 3c509.c: A 3c509 EtherLink3 ethernet driver for linux. */
2/*
3 Written 1993-2000 by Donald Becker.
4
5 Copyright 1994-2000 by Donald Becker.
6 Copyright 1993 United States Government as represented by the
7 Director, National Security Agency. This software may be used and
8 distributed according to the terms of the GNU General Public License,
9 incorporated herein by reference.
10
11 This driver is for the 3Com EtherLinkIII series.
12
13 The author may be reached as becker@scyld.com, or C/O
14 Scyld Computing Corporation
15 410 Severn Ave., Suite 210
16 Annapolis MD 21403
17
18 Known limitations:
19 Because of the way 3c509 ISA detection works it's difficult to predict
20 a priori which of several ISA-mode cards will be detected first.
21
22 This driver does not use predictive interrupt mode, resulting in higher
23 packet latency but lower overhead. If interrupts are disabled for an
24 unusually long time it could also result in missed packets, but in
25 practice this rarely happens.
26
27
28 FIXES:
29 Alan Cox: Removed the 'Unexpected interrupt' bug.
30 Michael Meskes: Upgraded to Donald Becker's version 1.07.
31 Alan Cox: Increased the eeprom delay. Regardless of
32 what the docs say some people definitely
33 get problems with lower (but in card spec)
34 delays
35 v1.10 4/21/97 Fixed module code so that multiple cards may be detected,
36 other cleanups. -djb
37 Andrea Arcangeli: Upgraded to Donald Becker's version 1.12.
38 Rick Payne: Fixed SMP race condition
39 v1.13 9/8/97 Made 'max_interrupt_work' an insmod-settable variable -djb
40 v1.14 10/15/97 Avoided waiting..discard message for fast machines -djb
41 v1.15 1/31/98 Faster recovery for Tx errors. -djb
42 v1.16 2/3/98 Different ID port handling to avoid sound cards. -djb
43 v1.18 12Mar2001 Andrew Morton
44 - Avoid bogus detect of 3c590's (Andrzej Krzysztofowicz)
45 - Reviewed against 1.18 from scyld.com
46 v1.18a 17Nov2001 Jeff Garzik <jgarzik@pobox.com>
47 - ethtool support
48 v1.18b 1Mar2002 Zwane Mwaikambo <zwane@commfireservices.com>
49 - Power Management support
50 v1.18c 1Mar2002 David Ruggiero <jdr@farfalle.com>
51 - Full duplex support
52 v1.19 16Oct2002 Zwane Mwaikambo <zwane@linuxpower.ca>
53 - Additional ethtool features
54 v1.19a 28Oct2002 Davud Ruggiero <jdr@farfalle.com>
55 - Increase *read_eeprom udelay to workaround oops with 2 cards.
56 v1.19b 08Nov2002 Marc Zyngier <maz@wild-wind.fr.eu.org>
57 - Introduce driver model for EISA cards.
58 v1.20 04Feb2008 Ondrej Zary <linux@rainbow-software.org>
59 - convert to isa_driver and pnp_driver and some cleanups
60*/
61
62#define DRV_NAME "3c509"
63
64/* A few values that may be tweaked. */
65
66/* Time in jiffies before concluding the transmitter is hung. */
67#define TX_TIMEOUT (400*HZ/1000)
68
69#include <linux/module.h>
70#include <linux/isa.h>
71#include <linux/pnp.h>
72#include <linux/string.h>
73#include <linux/interrupt.h>
74#include <linux/errno.h>
75#include <linux/in.h>
76#include <linux/ioport.h>
77#include <linux/init.h>
78#include <linux/netdevice.h>
79#include <linux/etherdevice.h>
80#include <linux/pm.h>
81#include <linux/skbuff.h>
82#include <linux/delay.h> /* for udelay() */
83#include <linux/spinlock.h>
84#include <linux/ethtool.h>
85#include <linux/device.h>
86#include <linux/eisa.h>
87#include <linux/bitops.h>
88
89#include <linux/uaccess.h>
90#include <asm/io.h>
91#include <asm/irq.h>
92
93#ifdef EL3_DEBUG
94static int el3_debug = EL3_DEBUG;
95#else
96static int el3_debug = 2;
97#endif
98
99/* Used to do a global count of all the cards in the system. Must be
100 * a global variable so that the eisa probe routines can increment
101 * it */
102static int el3_cards = 0;
103#define EL3_MAX_CARDS 8
104
105/* To minimize the size of the driver source I only define operating
106 constants if they are used several times. You'll need the manual
107 anyway if you want to understand driver details. */
108/* Offsets from base I/O address. */
109#define EL3_DATA 0x00
110#define EL3_CMD 0x0e
111#define EL3_STATUS 0x0e
112#define EEPROM_READ 0x80
113
114#define EL3_IO_EXTENT 16
115
116#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
117
118
119/* The top five bits written to EL3_CMD are a command, the lower
120 11 bits are the parameter, if applicable. */
121enum c509cmd {
122 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
123 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
124 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
125 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
126 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
127 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
128 StatsDisable = 22<<11, StopCoax = 23<<11, PowerUp = 27<<11,
129 PowerDown = 28<<11, PowerAuto = 29<<11};
130
131enum c509status {
132 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
133 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
134 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000, };
135
136/* The SetRxFilter command accepts the following classes: */
137enum RxFilter {
138 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 };
139
140/* Register window 1 offsets, the window used in normal operation. */
141#define TX_FIFO 0x00
142#define RX_FIFO 0x00
143#define RX_STATUS 0x08
144#define TX_STATUS 0x0B
145#define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
146
147#define WN0_CONF_CTRL 0x04 /* Window 0: Configuration control register */
148#define WN0_ADDR_CONF 0x06 /* Window 0: Address configuration register */
149#define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
150#define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
151#define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
152#define WN4_NETDIAG 0x06 /* Window 4: Net diagnostic */
153#define FD_ENABLE 0x8000 /* Enable full-duplex ("external loopback") */
154
155/*
156 * Must be a power of two (we use a binary and in the
157 * circular queue)
158 */
159#define SKB_QUEUE_SIZE 64
160
161enum el3_cardtype { EL3_ISA, EL3_PNP, EL3_EISA };
162
163struct el3_private {
164 spinlock_t lock;
165 /* skb send-queue */
166 int head, size;
167 struct sk_buff *queue[SKB_QUEUE_SIZE];
168 enum el3_cardtype type;
169};
170static int id_port;
171static int current_tag;
172static struct net_device *el3_devs[EL3_MAX_CARDS];
173
174/* Parameters that may be passed into the module. */
175static int debug = -1;
176static int irq[] = {-1, -1, -1, -1, -1, -1, -1, -1};
177/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
178static int max_interrupt_work = 10;
179#ifdef CONFIG_PNP
180static int nopnp;
181#endif
182
183static int el3_common_init(struct net_device *dev);
184static void el3_common_remove(struct net_device *dev);
185static ushort id_read_eeprom(int index);
186static ushort read_eeprom(int ioaddr, int index);
187static int el3_open(struct net_device *dev);
188static netdev_tx_t el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
189static irqreturn_t el3_interrupt(int irq, void *dev_id);
190static void update_stats(struct net_device *dev);
191static struct net_device_stats *el3_get_stats(struct net_device *dev);
192static int el3_rx(struct net_device *dev);
193static int el3_close(struct net_device *dev);
194static void set_multicast_list(struct net_device *dev);
195static void el3_tx_timeout (struct net_device *dev, unsigned int txqueue);
196static void el3_down(struct net_device *dev);
197static void el3_up(struct net_device *dev);
198static const struct ethtool_ops ethtool_ops;
199#ifdef CONFIG_PM
200static int el3_suspend(struct device *, pm_message_t);
201static int el3_resume(struct device *);
202#else
203#define el3_suspend NULL
204#define el3_resume NULL
205#endif
206
207
208/* generic device remove for all device types */
209static int el3_device_remove (struct device *device);
210#ifdef CONFIG_NET_POLL_CONTROLLER
211static void el3_poll_controller(struct net_device *dev);
212#endif
213
214/* Return 0 on success, 1 on error, 2 when found already detected PnP card */
215static int el3_isa_id_sequence(__be16 *phys_addr)
216{
217 short lrs_state = 0xff;
218 int i;
219
220 /* ISA boards are detected by sending the ID sequence to the
221 ID_PORT. We find cards past the first by setting the 'current_tag'
222 on cards as they are found. Cards with their tag set will not
223 respond to subsequent ID sequences. */
224
225 outb(0x00, id_port);
226 outb(0x00, id_port);
227 for (i = 0; i < 255; i++) {
228 outb(lrs_state, id_port);
229 lrs_state <<= 1;
230 lrs_state = lrs_state & 0x100 ? lrs_state ^ 0xcf : lrs_state;
231 }
232 /* For the first probe, clear all board's tag registers. */
233 if (current_tag == 0)
234 outb(0xd0, id_port);
235 else /* Otherwise kill off already-found boards. */
236 outb(0xd8, id_port);
237 if (id_read_eeprom(7) != 0x6d50)
238 return 1;
239 /* Read in EEPROM data, which does contention-select.
240 Only the lowest address board will stay "on-line".
241 3Com got the byte order backwards. */
242 for (i = 0; i < 3; i++)
243 phys_addr[i] = htons(id_read_eeprom(i));
244#ifdef CONFIG_PNP
245 if (!nopnp) {
246 /* The ISA PnP 3c509 cards respond to the ID sequence too.
247 This check is needed in order not to register them twice. */
248 for (i = 0; i < el3_cards; i++) {
249 struct el3_private *lp = netdev_priv(el3_devs[i]);
250 if (lp->type == EL3_PNP &&
251 ether_addr_equal((u8 *)phys_addr, el3_devs[i]->dev_addr)) {
252 if (el3_debug > 3)
253 pr_debug("3c509 with address %02x %02x %02x %02x %02x %02x was found by ISAPnP\n",
254 phys_addr[0] & 0xff, phys_addr[0] >> 8,
255 phys_addr[1] & 0xff, phys_addr[1] >> 8,
256 phys_addr[2] & 0xff, phys_addr[2] >> 8);
257 /* Set the adaptor tag so that the next card can be found. */
258 outb(0xd0 + ++current_tag, id_port);
259 return 2;
260 }
261 }
262 }
263#endif /* CONFIG_PNP */
264 return 0;
265
266}
267
268static void el3_dev_fill(struct net_device *dev, __be16 *phys_addr, int ioaddr,
269 int irq, int if_port, enum el3_cardtype type)
270{
271 struct el3_private *lp = netdev_priv(dev);
272
273 eth_hw_addr_set(dev, (u8 *)phys_addr);
274 dev->base_addr = ioaddr;
275 dev->irq = irq;
276 dev->if_port = if_port;
277 lp->type = type;
278}
279
280static int el3_isa_match(struct device *pdev, unsigned int ndev)
281{
282 struct net_device *dev;
283 int ioaddr, isa_irq, if_port, err;
284 unsigned int iobase;
285 __be16 phys_addr[3];
286
287 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
288 ; /* Skip to next card when PnP card found */
289 if (err == 1)
290 return 0;
291
292 iobase = id_read_eeprom(8);
293 if_port = iobase >> 14;
294 ioaddr = 0x200 + ((iobase & 0x1f) << 4);
295 if (irq[el3_cards] > 1 && irq[el3_cards] < 16)
296 isa_irq = irq[el3_cards];
297 else
298 isa_irq = id_read_eeprom(9) >> 12;
299
300 dev = alloc_etherdev(sizeof(struct el3_private));
301 if (!dev)
302 return -ENOMEM;
303
304 SET_NETDEV_DEV(dev, pdev);
305
306 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-isa")) {
307 free_netdev(dev);
308 return 0;
309 }
310
311 /* Set the adaptor tag so that the next card can be found. */
312 outb(0xd0 + ++current_tag, id_port);
313
314 /* Activate the adaptor at the EEPROM location. */
315 outb((ioaddr >> 4) | 0xe0, id_port);
316
317 EL3WINDOW(0);
318 if (inw(ioaddr) != 0x6d50) {
319 free_netdev(dev);
320 return 0;
321 }
322
323 /* Free the interrupt so that some other card can use it. */
324 outw(0x0f00, ioaddr + WN0_IRQ);
325
326 el3_dev_fill(dev, phys_addr, ioaddr, isa_irq, if_port, EL3_ISA);
327 dev_set_drvdata(pdev, dev);
328 if (el3_common_init(dev)) {
329 free_netdev(dev);
330 return 0;
331 }
332
333 el3_devs[el3_cards++] = dev;
334 return 1;
335}
336
337static void el3_isa_remove(struct device *pdev,
338 unsigned int ndev)
339{
340 el3_device_remove(pdev);
341 dev_set_drvdata(pdev, NULL);
342}
343
344#ifdef CONFIG_PM
345static int el3_isa_suspend(struct device *dev, unsigned int n,
346 pm_message_t state)
347{
348 current_tag = 0;
349 return el3_suspend(dev, state);
350}
351
352static int el3_isa_resume(struct device *dev, unsigned int n)
353{
354 struct net_device *ndev = dev_get_drvdata(dev);
355 int ioaddr = ndev->base_addr, err;
356 __be16 phys_addr[3];
357
358 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
359 ; /* Skip to next card when PnP card found */
360 if (err == 1)
361 return 0;
362 /* Set the adaptor tag so that the next card can be found. */
363 outb(0xd0 + ++current_tag, id_port);
364 /* Enable the card */
365 outb((ioaddr >> 4) | 0xe0, id_port);
366 EL3WINDOW(0);
367 if (inw(ioaddr) != 0x6d50)
368 return 1;
369 /* Free the interrupt so that some other card can use it. */
370 outw(0x0f00, ioaddr + WN0_IRQ);
371 return el3_resume(dev);
372}
373#endif
374
375static struct isa_driver el3_isa_driver = {
376 .match = el3_isa_match,
377 .remove = el3_isa_remove,
378#ifdef CONFIG_PM
379 .suspend = el3_isa_suspend,
380 .resume = el3_isa_resume,
381#endif
382 .driver = {
383 .name = "3c509"
384 },
385};
386static int isa_registered;
387
388#ifdef CONFIG_PNP
389static const struct pnp_device_id el3_pnp_ids[] = {
390 { .id = "TCM5090" }, /* 3Com Etherlink III (TP) */
391 { .id = "TCM5091" }, /* 3Com Etherlink III */
392 { .id = "TCM5094" }, /* 3Com Etherlink III (combo) */
393 { .id = "TCM5095" }, /* 3Com Etherlink III (TPO) */
394 { .id = "TCM5098" }, /* 3Com Etherlink III (TPC) */
395 { .id = "PNP80f7" }, /* 3Com Etherlink III compatible */
396 { .id = "PNP80f8" }, /* 3Com Etherlink III compatible */
397 { .id = "" }
398};
399MODULE_DEVICE_TABLE(pnp, el3_pnp_ids);
400
401static int el3_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id)
402{
403 short i;
404 int ioaddr, irq, if_port;
405 __be16 phys_addr[3];
406 struct net_device *dev = NULL;
407 int err;
408
409 ioaddr = pnp_port_start(pdev, 0);
410 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-pnp"))
411 return -EBUSY;
412 irq = pnp_irq(pdev, 0);
413 EL3WINDOW(0);
414 for (i = 0; i < 3; i++)
415 phys_addr[i] = htons(read_eeprom(ioaddr, i));
416 if_port = read_eeprom(ioaddr, 8) >> 14;
417 dev = alloc_etherdev(sizeof(struct el3_private));
418 if (!dev) {
419 release_region(ioaddr, EL3_IO_EXTENT);
420 return -ENOMEM;
421 }
422 SET_NETDEV_DEV(dev, &pdev->dev);
423
424 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_PNP);
425 pnp_set_drvdata(pdev, dev);
426 err = el3_common_init(dev);
427
428 if (err) {
429 pnp_set_drvdata(pdev, NULL);
430 free_netdev(dev);
431 return err;
432 }
433
434 el3_devs[el3_cards++] = dev;
435 return 0;
436}
437
438static void el3_pnp_remove(struct pnp_dev *pdev)
439{
440 el3_common_remove(pnp_get_drvdata(pdev));
441 pnp_set_drvdata(pdev, NULL);
442}
443
444#ifdef CONFIG_PM
445static int el3_pnp_suspend(struct pnp_dev *pdev, pm_message_t state)
446{
447 return el3_suspend(&pdev->dev, state);
448}
449
450static int el3_pnp_resume(struct pnp_dev *pdev)
451{
452 return el3_resume(&pdev->dev);
453}
454#endif
455
456static struct pnp_driver el3_pnp_driver = {
457 .name = "3c509",
458 .id_table = el3_pnp_ids,
459 .probe = el3_pnp_probe,
460 .remove = el3_pnp_remove,
461#ifdef CONFIG_PM
462 .suspend = el3_pnp_suspend,
463 .resume = el3_pnp_resume,
464#endif
465};
466static int pnp_registered;
467#endif /* CONFIG_PNP */
468
469#ifdef CONFIG_EISA
470static const struct eisa_device_id el3_eisa_ids[] = {
471 { "TCM5090" },
472 { "TCM5091" },
473 { "TCM5092" },
474 { "TCM5093" },
475 { "TCM5094" },
476 { "TCM5095" },
477 { "TCM5098" },
478 { "" }
479};
480MODULE_DEVICE_TABLE(eisa, el3_eisa_ids);
481
482static int el3_eisa_probe (struct device *device);
483
484static struct eisa_driver el3_eisa_driver = {
485 .id_table = el3_eisa_ids,
486 .driver = {
487 .name = "3c579",
488 .probe = el3_eisa_probe,
489 .remove = el3_device_remove,
490 .suspend = el3_suspend,
491 .resume = el3_resume,
492 }
493};
494static int eisa_registered;
495#endif
496
497static const struct net_device_ops netdev_ops = {
498 .ndo_open = el3_open,
499 .ndo_stop = el3_close,
500 .ndo_start_xmit = el3_start_xmit,
501 .ndo_get_stats = el3_get_stats,
502 .ndo_set_rx_mode = set_multicast_list,
503 .ndo_tx_timeout = el3_tx_timeout,
504 .ndo_set_mac_address = eth_mac_addr,
505 .ndo_validate_addr = eth_validate_addr,
506#ifdef CONFIG_NET_POLL_CONTROLLER
507 .ndo_poll_controller = el3_poll_controller,
508#endif
509};
510
511static int el3_common_init(struct net_device *dev)
512{
513 struct el3_private *lp = netdev_priv(dev);
514 int err;
515 static const char * const if_names[] = {
516 "10baseT", "AUI", "undefined", "BNC"
517 };
518
519 spin_lock_init(&lp->lock);
520
521 if (dev->mem_start & 0x05) { /* xcvr codes 1/3/4/12 */
522 dev->if_port = (dev->mem_start & 0x0f);
523 } else { /* xcvr codes 0/8 */
524 /* use eeprom value, but save user's full-duplex selection */
525 dev->if_port |= (dev->mem_start & 0x08);
526 }
527
528 /* The EL3-specific entries in the device structure. */
529 dev->netdev_ops = &netdev_ops;
530 dev->watchdog_timeo = TX_TIMEOUT;
531 dev->ethtool_ops = ðtool_ops;
532
533 err = register_netdev(dev);
534 if (err) {
535 pr_err("Failed to register 3c5x9 at %#3.3lx, IRQ %d.\n",
536 dev->base_addr, dev->irq);
537 release_region(dev->base_addr, EL3_IO_EXTENT);
538 return err;
539 }
540
541 pr_info("%s: 3c5x9 found at %#3.3lx, %s port, address %pM, IRQ %d.\n",
542 dev->name, dev->base_addr, if_names[(dev->if_port & 0x03)],
543 dev->dev_addr, dev->irq);
544
545 return 0;
546
547}
548
549static void el3_common_remove (struct net_device *dev)
550{
551 unregister_netdev (dev);
552 release_region(dev->base_addr, EL3_IO_EXTENT);
553 free_netdev (dev);
554}
555
556#ifdef CONFIG_EISA
557static int el3_eisa_probe(struct device *device)
558{
559 short i;
560 int ioaddr, irq, if_port;
561 __be16 phys_addr[3];
562 struct net_device *dev = NULL;
563 struct eisa_device *edev;
564 int err;
565
566 /* Yeepee, The driver framework is calling us ! */
567 edev = to_eisa_device (device);
568 ioaddr = edev->base_addr;
569
570 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c579-eisa"))
571 return -EBUSY;
572
573 /* Change the register set to the configuration window 0. */
574 outw(SelectWindow | 0, ioaddr + 0xC80 + EL3_CMD);
575
576 irq = inw(ioaddr + WN0_IRQ) >> 12;
577 if_port = inw(ioaddr + 6)>>14;
578 for (i = 0; i < 3; i++)
579 phys_addr[i] = htons(read_eeprom(ioaddr, i));
580
581 /* Restore the "Product ID" to the EEPROM read register. */
582 read_eeprom(ioaddr, 3);
583
584 dev = alloc_etherdev(sizeof (struct el3_private));
585 if (dev == NULL) {
586 release_region(ioaddr, EL3_IO_EXTENT);
587 return -ENOMEM;
588 }
589
590 SET_NETDEV_DEV(dev, device);
591
592 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_EISA);
593 eisa_set_drvdata (edev, dev);
594 err = el3_common_init(dev);
595
596 if (err) {
597 eisa_set_drvdata (edev, NULL);
598 free_netdev(dev);
599 return err;
600 }
601
602 el3_devs[el3_cards++] = dev;
603 return 0;
604}
605#endif
606
607/* This remove works for all device types.
608 *
609 * The net dev must be stored in the driver data field */
610static int el3_device_remove(struct device *device)
611{
612 struct net_device *dev;
613
614 dev = dev_get_drvdata(device);
615
616 el3_common_remove (dev);
617 return 0;
618}
619
620/* Read a word from the EEPROM using the regular EEPROM access register.
621 Assume that we are in register window zero.
622 */
623static ushort read_eeprom(int ioaddr, int index)
624{
625 outw(EEPROM_READ + index, ioaddr + 10);
626 /* Pause for at least 162 us. for the read to take place.
627 Some chips seem to require much longer */
628 mdelay(2);
629 return inw(ioaddr + 12);
630}
631
632/* Read a word from the EEPROM when in the ISA ID probe state. */
633static ushort id_read_eeprom(int index)
634{
635 int bit, word = 0;
636
637 /* Issue read command, and pause for at least 162 us. for it to complete.
638 Assume extra-fast 16Mhz bus. */
639 outb(EEPROM_READ + index, id_port);
640
641 /* Pause for at least 162 us. for the read to take place. */
642 /* Some chips seem to require much longer */
643 mdelay(4);
644
645 for (bit = 15; bit >= 0; bit--)
646 word = (word << 1) + (inb(id_port) & 0x01);
647
648 if (el3_debug > 3)
649 pr_debug(" 3c509 EEPROM word %d %#4.4x.\n", index, word);
650
651 return word;
652}
653
654
655static int
656el3_open(struct net_device *dev)
657{
658 int ioaddr = dev->base_addr;
659 int i;
660
661 outw(TxReset, ioaddr + EL3_CMD);
662 outw(RxReset, ioaddr + EL3_CMD);
663 outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
664
665 i = request_irq(dev->irq, el3_interrupt, 0, dev->name, dev);
666 if (i)
667 return i;
668
669 EL3WINDOW(0);
670 if (el3_debug > 3)
671 pr_debug("%s: Opening, IRQ %d status@%x %4.4x.\n", dev->name,
672 dev->irq, ioaddr + EL3_STATUS, inw(ioaddr + EL3_STATUS));
673
674 el3_up(dev);
675
676 if (el3_debug > 3)
677 pr_debug("%s: Opened 3c509 IRQ %d status %4.4x.\n",
678 dev->name, dev->irq, inw(ioaddr + EL3_STATUS));
679
680 return 0;
681}
682
683static void
684el3_tx_timeout (struct net_device *dev, unsigned int txqueue)
685{
686 int ioaddr = dev->base_addr;
687
688 /* Transmitter timeout, serious problems. */
689 pr_warn("%s: transmit timed out, Tx_status %2.2x status %4.4x Tx FIFO room %d\n",
690 dev->name, inb(ioaddr + TX_STATUS), inw(ioaddr + EL3_STATUS),
691 inw(ioaddr + TX_FREE));
692 dev->stats.tx_errors++;
693 netif_trans_update(dev); /* prevent tx timeout */
694 /* Issue TX_RESET and TX_START commands. */
695 outw(TxReset, ioaddr + EL3_CMD);
696 outw(TxEnable, ioaddr + EL3_CMD);
697 netif_wake_queue(dev);
698}
699
700
701static netdev_tx_t
702el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
703{
704 struct el3_private *lp = netdev_priv(dev);
705 int ioaddr = dev->base_addr;
706 unsigned long flags;
707
708 netif_stop_queue (dev);
709
710 dev->stats.tx_bytes += skb->len;
711
712 if (el3_debug > 4) {
713 pr_debug("%s: el3_start_xmit(length = %u) called, status %4.4x.\n",
714 dev->name, skb->len, inw(ioaddr + EL3_STATUS));
715 }
716 /*
717 * We lock the driver against other processors. Note
718 * we don't need to lock versus the IRQ as we suspended
719 * that. This means that we lose the ability to take
720 * an RX during a TX upload. That sucks a bit with SMP
721 * on an original 3c509 (2K buffer)
722 *
723 * Using disable_irq stops us crapping on other
724 * time sensitive devices.
725 */
726
727 spin_lock_irqsave(&lp->lock, flags);
728
729 /* Put out the doubleword header... */
730 outw(skb->len, ioaddr + TX_FIFO);
731 outw(0x00, ioaddr + TX_FIFO);
732 /* ... and the packet rounded to a doubleword. */
733 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
734
735 if (inw(ioaddr + TX_FREE) > 1536)
736 netif_start_queue(dev);
737 else
738 /* Interrupt us when the FIFO has room for max-sized packet. */
739 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
740
741 spin_unlock_irqrestore(&lp->lock, flags);
742
743 dev_consume_skb_any (skb);
744
745 /* Clear the Tx status stack. */
746 {
747 short tx_status;
748 int i = 4;
749
750 while (--i > 0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
751 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
752 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
753 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
754 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
755 }
756 }
757 return NETDEV_TX_OK;
758}
759
760/* The EL3 interrupt handler. */
761static irqreturn_t
762el3_interrupt(int irq, void *dev_id)
763{
764 struct net_device *dev = dev_id;
765 struct el3_private *lp;
766 int ioaddr, status;
767 int i = max_interrupt_work;
768
769 lp = netdev_priv(dev);
770 spin_lock(&lp->lock);
771
772 ioaddr = dev->base_addr;
773
774 if (el3_debug > 4) {
775 status = inw(ioaddr + EL3_STATUS);
776 pr_debug("%s: interrupt, status %4.4x.\n", dev->name, status);
777 }
778
779 while ((status = inw(ioaddr + EL3_STATUS)) &
780 (IntLatch | RxComplete | StatsFull)) {
781
782 if (status & RxComplete)
783 el3_rx(dev);
784
785 if (status & TxAvailable) {
786 if (el3_debug > 5)
787 pr_debug(" TX room bit was handled.\n");
788 /* There's room in the FIFO for a full-sized packet. */
789 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
790 netif_wake_queue (dev);
791 }
792 if (status & (AdapterFailure | RxEarly | StatsFull | TxComplete)) {
793 /* Handle all uncommon interrupts. */
794 if (status & StatsFull) /* Empty statistics. */
795 update_stats(dev);
796 if (status & RxEarly) { /* Rx early is unused. */
797 el3_rx(dev);
798 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
799 }
800 if (status & TxComplete) { /* Really Tx error. */
801 short tx_status;
802 int i = 4;
803
804 while (--i>0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
805 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
806 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
807 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
808 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
809 }
810 }
811 if (status & AdapterFailure) {
812 /* Adapter failure requires Rx reset and reinit. */
813 outw(RxReset, ioaddr + EL3_CMD);
814 /* Set the Rx filter to the current state. */
815 outw(SetRxFilter | RxStation | RxBroadcast
816 | (dev->flags & IFF_ALLMULTI ? RxMulticast : 0)
817 | (dev->flags & IFF_PROMISC ? RxProm : 0),
818 ioaddr + EL3_CMD);
819 outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
820 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
821 }
822 }
823
824 if (--i < 0) {
825 pr_err("%s: Infinite loop in interrupt, status %4.4x.\n",
826 dev->name, status);
827 /* Clear all interrupts. */
828 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
829 break;
830 }
831 /* Acknowledge the IRQ. */
832 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); /* Ack IRQ */
833 }
834
835 if (el3_debug > 4) {
836 pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name,
837 inw(ioaddr + EL3_STATUS));
838 }
839 spin_unlock(&lp->lock);
840 return IRQ_HANDLED;
841}
842
843
844#ifdef CONFIG_NET_POLL_CONTROLLER
845/*
846 * Polling receive - used by netconsole and other diagnostic tools
847 * to allow network i/o with interrupts disabled.
848 */
849static void el3_poll_controller(struct net_device *dev)
850{
851 disable_irq(dev->irq);
852 el3_interrupt(dev->irq, dev);
853 enable_irq(dev->irq);
854}
855#endif
856
857static struct net_device_stats *
858el3_get_stats(struct net_device *dev)
859{
860 struct el3_private *lp = netdev_priv(dev);
861 unsigned long flags;
862
863 /*
864 * This is fast enough not to bother with disable IRQ
865 * stuff.
866 */
867
868 spin_lock_irqsave(&lp->lock, flags);
869 update_stats(dev);
870 spin_unlock_irqrestore(&lp->lock, flags);
871 return &dev->stats;
872}
873
874/* Update statistics. We change to register window 6, so this should be run
875 single-threaded if the device is active. This is expected to be a rare
876 operation, and it's simpler for the rest of the driver to assume that
877 window 1 is always valid rather than use a special window-state variable.
878 */
879static void update_stats(struct net_device *dev)
880{
881 int ioaddr = dev->base_addr;
882
883 if (el3_debug > 5)
884 pr_debug(" Updating the statistics.\n");
885 /* Turn off statistics updates while reading. */
886 outw(StatsDisable, ioaddr + EL3_CMD);
887 /* Switch to the stats window, and read everything. */
888 EL3WINDOW(6);
889 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
890 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
891 /* Multiple collisions. */ inb(ioaddr + 2);
892 dev->stats.collisions += inb(ioaddr + 3);
893 dev->stats.tx_window_errors += inb(ioaddr + 4);
894 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
895 dev->stats.tx_packets += inb(ioaddr + 6);
896 /* Rx packets */ inb(ioaddr + 7);
897 /* Tx deferrals */ inb(ioaddr + 8);
898 inw(ioaddr + 10); /* Total Rx and Tx octets. */
899 inw(ioaddr + 12);
900
901 /* Back to window 1, and turn statistics back on. */
902 EL3WINDOW(1);
903 outw(StatsEnable, ioaddr + EL3_CMD);
904}
905
906static int
907el3_rx(struct net_device *dev)
908{
909 int ioaddr = dev->base_addr;
910 short rx_status;
911
912 if (el3_debug > 5)
913 pr_debug(" In rx_packet(), status %4.4x, rx_status %4.4x.\n",
914 inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
915 while ((rx_status = inw(ioaddr + RX_STATUS)) > 0) {
916 if (rx_status & 0x4000) { /* Error, update stats. */
917 short error = rx_status & 0x3800;
918
919 outw(RxDiscard, ioaddr + EL3_CMD);
920 dev->stats.rx_errors++;
921 switch (error) {
922 case 0x0000: dev->stats.rx_over_errors++; break;
923 case 0x0800: dev->stats.rx_length_errors++; break;
924 case 0x1000: dev->stats.rx_frame_errors++; break;
925 case 0x1800: dev->stats.rx_length_errors++; break;
926 case 0x2000: dev->stats.rx_frame_errors++; break;
927 case 0x2800: dev->stats.rx_crc_errors++; break;
928 }
929 } else {
930 short pkt_len = rx_status & 0x7ff;
931 struct sk_buff *skb;
932
933 skb = netdev_alloc_skb(dev, pkt_len + 5);
934 if (el3_debug > 4)
935 pr_debug("Receiving packet size %d status %4.4x.\n",
936 pkt_len, rx_status);
937 if (skb != NULL) {
938 skb_reserve(skb, 2); /* Align IP on 16 byte */
939
940 /* 'skb->data' points to the start of sk_buff data area. */
941 insl(ioaddr + RX_FIFO, skb_put(skb,pkt_len),
942 (pkt_len + 3) >> 2);
943
944 outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */
945 skb->protocol = eth_type_trans(skb,dev);
946 netif_rx(skb);
947 dev->stats.rx_bytes += pkt_len;
948 dev->stats.rx_packets++;
949 continue;
950 }
951 outw(RxDiscard, ioaddr + EL3_CMD);
952 dev->stats.rx_dropped++;
953 if (el3_debug)
954 pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n",
955 dev->name, pkt_len);
956 }
957 inw(ioaddr + EL3_STATUS); /* Delay. */
958 while (inw(ioaddr + EL3_STATUS) & 0x1000)
959 pr_debug(" Waiting for 3c509 to discard packet, status %x.\n",
960 inw(ioaddr + EL3_STATUS) );
961 }
962
963 return 0;
964}
965
966/*
967 * Set or clear the multicast filter for this adaptor.
968 */
969static void
970set_multicast_list(struct net_device *dev)
971{
972 unsigned long flags;
973 struct el3_private *lp = netdev_priv(dev);
974 int ioaddr = dev->base_addr;
975 int mc_count = netdev_mc_count(dev);
976
977 if (el3_debug > 1) {
978 static int old;
979 if (old != mc_count) {
980 old = mc_count;
981 pr_debug("%s: Setting Rx mode to %d addresses.\n",
982 dev->name, mc_count);
983 }
984 }
985 spin_lock_irqsave(&lp->lock, flags);
986 if (dev->flags&IFF_PROMISC) {
987 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
988 ioaddr + EL3_CMD);
989 }
990 else if (mc_count || (dev->flags&IFF_ALLMULTI)) {
991 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast, ioaddr + EL3_CMD);
992 }
993 else
994 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
995 spin_unlock_irqrestore(&lp->lock, flags);
996}
997
998static int
999el3_close(struct net_device *dev)
1000{
1001 int ioaddr = dev->base_addr;
1002 struct el3_private *lp = netdev_priv(dev);
1003
1004 if (el3_debug > 2)
1005 pr_debug("%s: Shutting down ethercard.\n", dev->name);
1006
1007 el3_down(dev);
1008
1009 free_irq(dev->irq, dev);
1010 /* Switching back to window 0 disables the IRQ. */
1011 EL3WINDOW(0);
1012 if (lp->type != EL3_EISA) {
1013 /* But we explicitly zero the IRQ line select anyway. Don't do
1014 * it on EISA cards, it prevents the module from getting an
1015 * IRQ after unload+reload... */
1016 outw(0x0f00, ioaddr + WN0_IRQ);
1017 }
1018
1019 return 0;
1020}
1021
1022static int
1023el3_link_ok(struct net_device *dev)
1024{
1025 int ioaddr = dev->base_addr;
1026 u16 tmp;
1027
1028 EL3WINDOW(4);
1029 tmp = inw(ioaddr + WN4_MEDIA);
1030 EL3WINDOW(1);
1031 return tmp & (1<<11);
1032}
1033
1034static void
1035el3_netdev_get_ecmd(struct net_device *dev, struct ethtool_link_ksettings *cmd)
1036{
1037 u16 tmp;
1038 int ioaddr = dev->base_addr;
1039 u32 supported;
1040
1041 EL3WINDOW(0);
1042 /* obtain current transceiver via WN4_MEDIA? */
1043 tmp = inw(ioaddr + WN0_ADDR_CONF);
1044 switch (tmp >> 14) {
1045 case 0:
1046 cmd->base.port = PORT_TP;
1047 break;
1048 case 1:
1049 cmd->base.port = PORT_AUI;
1050 break;
1051 case 3:
1052 cmd->base.port = PORT_BNC;
1053 break;
1054 default:
1055 break;
1056 }
1057
1058 cmd->base.duplex = DUPLEX_HALF;
1059 supported = 0;
1060 tmp = inw(ioaddr + WN0_CONF_CTRL);
1061 if (tmp & (1<<13))
1062 supported |= SUPPORTED_AUI;
1063 if (tmp & (1<<12))
1064 supported |= SUPPORTED_BNC;
1065 if (tmp & (1<<9)) {
1066 supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half |
1067 SUPPORTED_10baseT_Full; /* hmm... */
1068 EL3WINDOW(4);
1069 tmp = inw(ioaddr + WN4_NETDIAG);
1070 if (tmp & FD_ENABLE)
1071 cmd->base.duplex = DUPLEX_FULL;
1072 }
1073
1074 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
1075 supported);
1076 cmd->base.speed = SPEED_10;
1077 EL3WINDOW(1);
1078}
1079
1080static int
1081el3_netdev_set_ecmd(struct net_device *dev,
1082 const struct ethtool_link_ksettings *cmd)
1083{
1084 u16 tmp;
1085 int ioaddr = dev->base_addr;
1086
1087 if (cmd->base.speed != SPEED_10)
1088 return -EINVAL;
1089 if ((cmd->base.duplex != DUPLEX_HALF) &&
1090 (cmd->base.duplex != DUPLEX_FULL))
1091 return -EINVAL;
1092
1093 /* change XCVR type */
1094 EL3WINDOW(0);
1095 tmp = inw(ioaddr + WN0_ADDR_CONF);
1096 switch (cmd->base.port) {
1097 case PORT_TP:
1098 tmp &= ~(3<<14);
1099 dev->if_port = 0;
1100 break;
1101 case PORT_AUI:
1102 tmp |= (1<<14);
1103 dev->if_port = 1;
1104 break;
1105 case PORT_BNC:
1106 tmp |= (3<<14);
1107 dev->if_port = 3;
1108 break;
1109 default:
1110 return -EINVAL;
1111 }
1112
1113 outw(tmp, ioaddr + WN0_ADDR_CONF);
1114 if (dev->if_port == 3) {
1115 /* fire up the DC-DC convertor if BNC gets enabled */
1116 tmp = inw(ioaddr + WN0_ADDR_CONF);
1117 if (tmp & (3 << 14)) {
1118 outw(StartCoax, ioaddr + EL3_CMD);
1119 udelay(800);
1120 } else
1121 return -EIO;
1122 }
1123
1124 EL3WINDOW(4);
1125 tmp = inw(ioaddr + WN4_NETDIAG);
1126 if (cmd->base.duplex == DUPLEX_FULL)
1127 tmp |= FD_ENABLE;
1128 else
1129 tmp &= ~FD_ENABLE;
1130 outw(tmp, ioaddr + WN4_NETDIAG);
1131 EL3WINDOW(1);
1132
1133 return 0;
1134}
1135
1136static void el3_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1137{
1138 strscpy(info->driver, DRV_NAME, sizeof(info->driver));
1139}
1140
1141static int el3_get_link_ksettings(struct net_device *dev,
1142 struct ethtool_link_ksettings *cmd)
1143{
1144 struct el3_private *lp = netdev_priv(dev);
1145
1146 spin_lock_irq(&lp->lock);
1147 el3_netdev_get_ecmd(dev, cmd);
1148 spin_unlock_irq(&lp->lock);
1149 return 0;
1150}
1151
1152static int el3_set_link_ksettings(struct net_device *dev,
1153 const struct ethtool_link_ksettings *cmd)
1154{
1155 struct el3_private *lp = netdev_priv(dev);
1156 int ret;
1157
1158 spin_lock_irq(&lp->lock);
1159 ret = el3_netdev_set_ecmd(dev, cmd);
1160 spin_unlock_irq(&lp->lock);
1161 return ret;
1162}
1163
1164static u32 el3_get_link(struct net_device *dev)
1165{
1166 struct el3_private *lp = netdev_priv(dev);
1167 u32 ret;
1168
1169 spin_lock_irq(&lp->lock);
1170 ret = el3_link_ok(dev);
1171 spin_unlock_irq(&lp->lock);
1172 return ret;
1173}
1174
1175static u32 el3_get_msglevel(struct net_device *dev)
1176{
1177 return el3_debug;
1178}
1179
1180static void el3_set_msglevel(struct net_device *dev, u32 v)
1181{
1182 el3_debug = v;
1183}
1184
1185static const struct ethtool_ops ethtool_ops = {
1186 .get_drvinfo = el3_get_drvinfo,
1187 .get_link = el3_get_link,
1188 .get_msglevel = el3_get_msglevel,
1189 .set_msglevel = el3_set_msglevel,
1190 .get_link_ksettings = el3_get_link_ksettings,
1191 .set_link_ksettings = el3_set_link_ksettings,
1192};
1193
1194static void
1195el3_down(struct net_device *dev)
1196{
1197 int ioaddr = dev->base_addr;
1198
1199 netif_stop_queue(dev);
1200
1201 /* Turn off statistics ASAP. We update lp->stats below. */
1202 outw(StatsDisable, ioaddr + EL3_CMD);
1203
1204 /* Disable the receiver and transmitter. */
1205 outw(RxDisable, ioaddr + EL3_CMD);
1206 outw(TxDisable, ioaddr + EL3_CMD);
1207
1208 if (dev->if_port == 3)
1209 /* Turn off thinnet power. Green! */
1210 outw(StopCoax, ioaddr + EL3_CMD);
1211 else if (dev->if_port == 0) {
1212 /* Disable link beat and jabber, if_port may change here next open(). */
1213 EL3WINDOW(4);
1214 outw(inw(ioaddr + WN4_MEDIA) & ~MEDIA_TP, ioaddr + WN4_MEDIA);
1215 }
1216
1217 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1218
1219 update_stats(dev);
1220}
1221
1222static void
1223el3_up(struct net_device *dev)
1224{
1225 int i, sw_info, net_diag;
1226 int ioaddr = dev->base_addr;
1227
1228 /* Activating the board required and does no harm otherwise */
1229 outw(0x0001, ioaddr + 4);
1230
1231 /* Set the IRQ line. */
1232 outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ);
1233
1234 /* Set the station address in window 2 each time opened. */
1235 EL3WINDOW(2);
1236
1237 for (i = 0; i < 6; i++)
1238 outb(dev->dev_addr[i], ioaddr + i);
1239
1240 if ((dev->if_port & 0x03) == 3) /* BNC interface */
1241 /* Start the thinnet transceiver. We should really wait 50ms...*/
1242 outw(StartCoax, ioaddr + EL3_CMD);
1243 else if ((dev->if_port & 0x03) == 0) { /* 10baseT interface */
1244 /* Combine secondary sw_info word (the adapter level) and primary
1245 sw_info word (duplex setting plus other useless bits) */
1246 EL3WINDOW(0);
1247 sw_info = (read_eeprom(ioaddr, 0x14) & 0x400f) |
1248 (read_eeprom(ioaddr, 0x0d) & 0xBff0);
1249
1250 EL3WINDOW(4);
1251 net_diag = inw(ioaddr + WN4_NETDIAG);
1252 net_diag = (net_diag | FD_ENABLE); /* temporarily assume full-duplex will be set */
1253 pr_info("%s: ", dev->name);
1254 switch (dev->if_port & 0x0c) {
1255 case 12:
1256 /* force full-duplex mode if 3c5x9b */
1257 if (sw_info & 0x000f) {
1258 pr_cont("Forcing 3c5x9b full-duplex mode");
1259 break;
1260 }
1261 fallthrough;
1262 case 8:
1263 /* set full-duplex mode based on eeprom config setting */
1264 if ((sw_info & 0x000f) && (sw_info & 0x8000)) {
1265 pr_cont("Setting 3c5x9b full-duplex mode (from EEPROM configuration bit)");
1266 break;
1267 }
1268 fallthrough;
1269 default:
1270 /* xcvr=(0 || 4) OR user has an old 3c5x9 non "B" model */
1271 pr_cont("Setting 3c5x9/3c5x9B half-duplex mode");
1272 net_diag = (net_diag & ~FD_ENABLE); /* disable full duplex */
1273 }
1274
1275 outw(net_diag, ioaddr + WN4_NETDIAG);
1276 pr_cont(" if_port: %d, sw_info: %4.4x\n", dev->if_port, sw_info);
1277 if (el3_debug > 3)
1278 pr_debug("%s: 3c5x9 net diag word is now: %4.4x.\n", dev->name, net_diag);
1279 /* Enable link beat and jabber check. */
1280 outw(inw(ioaddr + WN4_MEDIA) | MEDIA_TP, ioaddr + WN4_MEDIA);
1281 }
1282
1283 /* Switch to the stats window, and clear all stats by reading. */
1284 outw(StatsDisable, ioaddr + EL3_CMD);
1285 EL3WINDOW(6);
1286 for (i = 0; i < 9; i++)
1287 inb(ioaddr + i);
1288 inw(ioaddr + 10);
1289 inw(ioaddr + 12);
1290
1291 /* Switch to register set 1 for normal use. */
1292 EL3WINDOW(1);
1293
1294 /* Accept b-case and phys addr only. */
1295 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1296 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
1297
1298 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
1299 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
1300 /* Allow status bits to be seen. */
1301 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
1302 /* Ack all pending events, and set active indicator mask. */
1303 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
1304 ioaddr + EL3_CMD);
1305 outw(SetIntrEnb | IntLatch|TxAvailable|TxComplete|RxComplete|StatsFull,
1306 ioaddr + EL3_CMD);
1307
1308 netif_start_queue(dev);
1309}
1310
1311/* Power Management support functions */
1312#ifdef CONFIG_PM
1313
1314static int
1315el3_suspend(struct device *pdev, pm_message_t state)
1316{
1317 unsigned long flags;
1318 struct net_device *dev;
1319 struct el3_private *lp;
1320 int ioaddr;
1321
1322 dev = dev_get_drvdata(pdev);
1323 lp = netdev_priv(dev);
1324 ioaddr = dev->base_addr;
1325
1326 spin_lock_irqsave(&lp->lock, flags);
1327
1328 if (netif_running(dev))
1329 netif_device_detach(dev);
1330
1331 el3_down(dev);
1332 outw(PowerDown, ioaddr + EL3_CMD);
1333
1334 spin_unlock_irqrestore(&lp->lock, flags);
1335 return 0;
1336}
1337
1338static int
1339el3_resume(struct device *pdev)
1340{
1341 unsigned long flags;
1342 struct net_device *dev;
1343 struct el3_private *lp;
1344 int ioaddr;
1345
1346 dev = dev_get_drvdata(pdev);
1347 lp = netdev_priv(dev);
1348 ioaddr = dev->base_addr;
1349
1350 spin_lock_irqsave(&lp->lock, flags);
1351
1352 outw(PowerUp, ioaddr + EL3_CMD);
1353 EL3WINDOW(0);
1354 el3_up(dev);
1355
1356 if (netif_running(dev))
1357 netif_device_attach(dev);
1358
1359 spin_unlock_irqrestore(&lp->lock, flags);
1360 return 0;
1361}
1362
1363#endif /* CONFIG_PM */
1364
1365module_param(debug,int, 0);
1366module_param_hw_array(irq, int, irq, NULL, 0);
1367module_param(max_interrupt_work, int, 0);
1368MODULE_PARM_DESC(debug, "debug level (0-6)");
1369MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
1370MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt");
1371#ifdef CONFIG_PNP
1372module_param(nopnp, int, 0);
1373MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)");
1374#endif /* CONFIG_PNP */
1375MODULE_DESCRIPTION("3Com Etherlink III (3c509, 3c509B, 3c529, 3c579) ethernet driver");
1376MODULE_LICENSE("GPL");
1377
1378static int __init el3_init_module(void)
1379{
1380 int ret = 0;
1381
1382 if (debug >= 0)
1383 el3_debug = debug;
1384
1385#ifdef CONFIG_PNP
1386 if (!nopnp) {
1387 ret = pnp_register_driver(&el3_pnp_driver);
1388 if (!ret)
1389 pnp_registered = 1;
1390 }
1391#endif
1392 /* Select an open I/O location at 0x1*0 to do ISA contention select. */
1393 /* Start with 0x110 to avoid some sound cards.*/
1394 for (id_port = 0x110 ; id_port < 0x200; id_port += 0x10) {
1395 if (!request_region(id_port, 1, "3c509-control"))
1396 continue;
1397 outb(0x00, id_port);
1398 outb(0xff, id_port);
1399 if (inb(id_port) & 0x01)
1400 break;
1401 else
1402 release_region(id_port, 1);
1403 }
1404 if (id_port >= 0x200) {
1405 id_port = 0;
1406 pr_err("No I/O port available for 3c509 activation.\n");
1407 } else {
1408 ret = isa_register_driver(&el3_isa_driver, EL3_MAX_CARDS);
1409 if (!ret)
1410 isa_registered = 1;
1411 }
1412#ifdef CONFIG_EISA
1413 ret = eisa_driver_register(&el3_eisa_driver);
1414 if (!ret)
1415 eisa_registered = 1;
1416#endif
1417
1418#ifdef CONFIG_PNP
1419 if (pnp_registered)
1420 ret = 0;
1421#endif
1422 if (isa_registered)
1423 ret = 0;
1424#ifdef CONFIG_EISA
1425 if (eisa_registered)
1426 ret = 0;
1427#endif
1428 return ret;
1429}
1430
1431static void __exit el3_cleanup_module(void)
1432{
1433#ifdef CONFIG_PNP
1434 if (pnp_registered)
1435 pnp_unregister_driver(&el3_pnp_driver);
1436#endif
1437 if (isa_registered)
1438 isa_unregister_driver(&el3_isa_driver);
1439 if (id_port)
1440 release_region(id_port, 1);
1441#ifdef CONFIG_EISA
1442 if (eisa_registered)
1443 eisa_driver_unregister(&el3_eisa_driver);
1444#endif
1445}
1446
1447module_init (el3_init_module);
1448module_exit (el3_cleanup_module);
1/* 3c509.c: A 3c509 EtherLink3 ethernet driver for linux. */
2/*
3 Written 1993-2000 by Donald Becker.
4
5 Copyright 1994-2000 by Donald Becker.
6 Copyright 1993 United States Government as represented by the
7 Director, National Security Agency. This software may be used and
8 distributed according to the terms of the GNU General Public License,
9 incorporated herein by reference.
10
11 This driver is for the 3Com EtherLinkIII series.
12
13 The author may be reached as becker@scyld.com, or C/O
14 Scyld Computing Corporation
15 410 Severn Ave., Suite 210
16 Annapolis MD 21403
17
18 Known limitations:
19 Because of the way 3c509 ISA detection works it's difficult to predict
20 a priori which of several ISA-mode cards will be detected first.
21
22 This driver does not use predictive interrupt mode, resulting in higher
23 packet latency but lower overhead. If interrupts are disabled for an
24 unusually long time it could also result in missed packets, but in
25 practice this rarely happens.
26
27
28 FIXES:
29 Alan Cox: Removed the 'Unexpected interrupt' bug.
30 Michael Meskes: Upgraded to Donald Becker's version 1.07.
31 Alan Cox: Increased the eeprom delay. Regardless of
32 what the docs say some people definitely
33 get problems with lower (but in card spec)
34 delays
35 v1.10 4/21/97 Fixed module code so that multiple cards may be detected,
36 other cleanups. -djb
37 Andrea Arcangeli: Upgraded to Donald Becker's version 1.12.
38 Rick Payne: Fixed SMP race condition
39 v1.13 9/8/97 Made 'max_interrupt_work' an insmod-settable variable -djb
40 v1.14 10/15/97 Avoided waiting..discard message for fast machines -djb
41 v1.15 1/31/98 Faster recovery for Tx errors. -djb
42 v1.16 2/3/98 Different ID port handling to avoid sound cards. -djb
43 v1.18 12Mar2001 Andrew Morton
44 - Avoid bogus detect of 3c590's (Andrzej Krzysztofowicz)
45 - Reviewed against 1.18 from scyld.com
46 v1.18a 17Nov2001 Jeff Garzik <jgarzik@pobox.com>
47 - ethtool support
48 v1.18b 1Mar2002 Zwane Mwaikambo <zwane@commfireservices.com>
49 - Power Management support
50 v1.18c 1Mar2002 David Ruggiero <jdr@farfalle.com>
51 - Full duplex support
52 v1.19 16Oct2002 Zwane Mwaikambo <zwane@linuxpower.ca>
53 - Additional ethtool features
54 v1.19a 28Oct2002 Davud Ruggiero <jdr@farfalle.com>
55 - Increase *read_eeprom udelay to workaround oops with 2 cards.
56 v1.19b 08Nov2002 Marc Zyngier <maz@wild-wind.fr.eu.org>
57 - Introduce driver model for EISA cards.
58 v1.20 04Feb2008 Ondrej Zary <linux@rainbow-software.org>
59 - convert to isa_driver and pnp_driver and some cleanups
60*/
61
62#define DRV_NAME "3c509"
63#define DRV_VERSION "1.20"
64#define DRV_RELDATE "04Feb2008"
65
66/* A few values that may be tweaked. */
67
68/* Time in jiffies before concluding the transmitter is hung. */
69#define TX_TIMEOUT (400*HZ/1000)
70
71#include <linux/module.h>
72#include <linux/isa.h>
73#include <linux/pnp.h>
74#include <linux/string.h>
75#include <linux/interrupt.h>
76#include <linux/errno.h>
77#include <linux/in.h>
78#include <linux/ioport.h>
79#include <linux/init.h>
80#include <linux/netdevice.h>
81#include <linux/etherdevice.h>
82#include <linux/pm.h>
83#include <linux/skbuff.h>
84#include <linux/delay.h> /* for udelay() */
85#include <linux/spinlock.h>
86#include <linux/ethtool.h>
87#include <linux/device.h>
88#include <linux/eisa.h>
89#include <linux/bitops.h>
90
91#include <asm/uaccess.h>
92#include <asm/io.h>
93#include <asm/irq.h>
94
95static char version[] = DRV_NAME ".c:" DRV_VERSION " " DRV_RELDATE " becker@scyld.com\n";
96
97#ifdef EL3_DEBUG
98static int el3_debug = EL3_DEBUG;
99#else
100static int el3_debug = 2;
101#endif
102
103/* Used to do a global count of all the cards in the system. Must be
104 * a global variable so that the eisa probe routines can increment
105 * it */
106static int el3_cards = 0;
107#define EL3_MAX_CARDS 8
108
109/* To minimize the size of the driver source I only define operating
110 constants if they are used several times. You'll need the manual
111 anyway if you want to understand driver details. */
112/* Offsets from base I/O address. */
113#define EL3_DATA 0x00
114#define EL3_CMD 0x0e
115#define EL3_STATUS 0x0e
116#define EEPROM_READ 0x80
117
118#define EL3_IO_EXTENT 16
119
120#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
121
122
123/* The top five bits written to EL3_CMD are a command, the lower
124 11 bits are the parameter, if applicable. */
125enum c509cmd {
126 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
127 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
128 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
129 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
130 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
131 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
132 StatsDisable = 22<<11, StopCoax = 23<<11, PowerUp = 27<<11,
133 PowerDown = 28<<11, PowerAuto = 29<<11};
134
135enum c509status {
136 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
137 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
138 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000, };
139
140/* The SetRxFilter command accepts the following classes: */
141enum RxFilter {
142 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 };
143
144/* Register window 1 offsets, the window used in normal operation. */
145#define TX_FIFO 0x00
146#define RX_FIFO 0x00
147#define RX_STATUS 0x08
148#define TX_STATUS 0x0B
149#define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
150
151#define WN0_CONF_CTRL 0x04 /* Window 0: Configuration control register */
152#define WN0_ADDR_CONF 0x06 /* Window 0: Address configuration register */
153#define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
154#define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
155#define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
156#define WN4_NETDIAG 0x06 /* Window 4: Net diagnostic */
157#define FD_ENABLE 0x8000 /* Enable full-duplex ("external loopback") */
158
159/*
160 * Must be a power of two (we use a binary and in the
161 * circular queue)
162 */
163#define SKB_QUEUE_SIZE 64
164
165enum el3_cardtype { EL3_ISA, EL3_PNP, EL3_EISA };
166
167struct el3_private {
168 spinlock_t lock;
169 /* skb send-queue */
170 int head, size;
171 struct sk_buff *queue[SKB_QUEUE_SIZE];
172 enum el3_cardtype type;
173};
174static int id_port;
175static int current_tag;
176static struct net_device *el3_devs[EL3_MAX_CARDS];
177
178/* Parameters that may be passed into the module. */
179static int debug = -1;
180static int irq[] = {-1, -1, -1, -1, -1, -1, -1, -1};
181/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
182static int max_interrupt_work = 10;
183#ifdef CONFIG_PNP
184static int nopnp;
185#endif
186
187static int el3_common_init(struct net_device *dev);
188static void el3_common_remove(struct net_device *dev);
189static ushort id_read_eeprom(int index);
190static ushort read_eeprom(int ioaddr, int index);
191static int el3_open(struct net_device *dev);
192static netdev_tx_t el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
193static irqreturn_t el3_interrupt(int irq, void *dev_id);
194static void update_stats(struct net_device *dev);
195static struct net_device_stats *el3_get_stats(struct net_device *dev);
196static int el3_rx(struct net_device *dev);
197static int el3_close(struct net_device *dev);
198static void set_multicast_list(struct net_device *dev);
199static void el3_tx_timeout (struct net_device *dev);
200static void el3_down(struct net_device *dev);
201static void el3_up(struct net_device *dev);
202static const struct ethtool_ops ethtool_ops;
203#ifdef CONFIG_PM
204static int el3_suspend(struct device *, pm_message_t);
205static int el3_resume(struct device *);
206#else
207#define el3_suspend NULL
208#define el3_resume NULL
209#endif
210
211
212/* generic device remove for all device types */
213static int el3_device_remove (struct device *device);
214#ifdef CONFIG_NET_POLL_CONTROLLER
215static void el3_poll_controller(struct net_device *dev);
216#endif
217
218/* Return 0 on success, 1 on error, 2 when found already detected PnP card */
219static int el3_isa_id_sequence(__be16 *phys_addr)
220{
221 short lrs_state = 0xff;
222 int i;
223
224 /* ISA boards are detected by sending the ID sequence to the
225 ID_PORT. We find cards past the first by setting the 'current_tag'
226 on cards as they are found. Cards with their tag set will not
227 respond to subsequent ID sequences. */
228
229 outb(0x00, id_port);
230 outb(0x00, id_port);
231 for (i = 0; i < 255; i++) {
232 outb(lrs_state, id_port);
233 lrs_state <<= 1;
234 lrs_state = lrs_state & 0x100 ? lrs_state ^ 0xcf : lrs_state;
235 }
236 /* For the first probe, clear all board's tag registers. */
237 if (current_tag == 0)
238 outb(0xd0, id_port);
239 else /* Otherwise kill off already-found boards. */
240 outb(0xd8, id_port);
241 if (id_read_eeprom(7) != 0x6d50)
242 return 1;
243 /* Read in EEPROM data, which does contention-select.
244 Only the lowest address board will stay "on-line".
245 3Com got the byte order backwards. */
246 for (i = 0; i < 3; i++)
247 phys_addr[i] = htons(id_read_eeprom(i));
248#ifdef CONFIG_PNP
249 if (!nopnp) {
250 /* The ISA PnP 3c509 cards respond to the ID sequence too.
251 This check is needed in order not to register them twice. */
252 for (i = 0; i < el3_cards; i++) {
253 struct el3_private *lp = netdev_priv(el3_devs[i]);
254 if (lp->type == EL3_PNP &&
255 ether_addr_equal((u8 *)phys_addr, el3_devs[i]->dev_addr)) {
256 if (el3_debug > 3)
257 pr_debug("3c509 with address %02x %02x %02x %02x %02x %02x was found by ISAPnP\n",
258 phys_addr[0] & 0xff, phys_addr[0] >> 8,
259 phys_addr[1] & 0xff, phys_addr[1] >> 8,
260 phys_addr[2] & 0xff, phys_addr[2] >> 8);
261 /* Set the adaptor tag so that the next card can be found. */
262 outb(0xd0 + ++current_tag, id_port);
263 return 2;
264 }
265 }
266 }
267#endif /* CONFIG_PNP */
268 return 0;
269
270}
271
272static void el3_dev_fill(struct net_device *dev, __be16 *phys_addr, int ioaddr,
273 int irq, int if_port, enum el3_cardtype type)
274{
275 struct el3_private *lp = netdev_priv(dev);
276
277 memcpy(dev->dev_addr, phys_addr, ETH_ALEN);
278 dev->base_addr = ioaddr;
279 dev->irq = irq;
280 dev->if_port = if_port;
281 lp->type = type;
282}
283
284static int el3_isa_match(struct device *pdev, unsigned int ndev)
285{
286 struct net_device *dev;
287 int ioaddr, isa_irq, if_port, err;
288 unsigned int iobase;
289 __be16 phys_addr[3];
290
291 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
292 ; /* Skip to next card when PnP card found */
293 if (err == 1)
294 return 0;
295
296 iobase = id_read_eeprom(8);
297 if_port = iobase >> 14;
298 ioaddr = 0x200 + ((iobase & 0x1f) << 4);
299 if (irq[el3_cards] > 1 && irq[el3_cards] < 16)
300 isa_irq = irq[el3_cards];
301 else
302 isa_irq = id_read_eeprom(9) >> 12;
303
304 dev = alloc_etherdev(sizeof(struct el3_private));
305 if (!dev)
306 return -ENOMEM;
307
308 SET_NETDEV_DEV(dev, pdev);
309 netdev_boot_setup_check(dev);
310
311 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-isa")) {
312 free_netdev(dev);
313 return 0;
314 }
315
316 /* Set the adaptor tag so that the next card can be found. */
317 outb(0xd0 + ++current_tag, id_port);
318
319 /* Activate the adaptor at the EEPROM location. */
320 outb((ioaddr >> 4) | 0xe0, id_port);
321
322 EL3WINDOW(0);
323 if (inw(ioaddr) != 0x6d50) {
324 free_netdev(dev);
325 return 0;
326 }
327
328 /* Free the interrupt so that some other card can use it. */
329 outw(0x0f00, ioaddr + WN0_IRQ);
330
331 el3_dev_fill(dev, phys_addr, ioaddr, isa_irq, if_port, EL3_ISA);
332 dev_set_drvdata(pdev, dev);
333 if (el3_common_init(dev)) {
334 free_netdev(dev);
335 return 0;
336 }
337
338 el3_devs[el3_cards++] = dev;
339 return 1;
340}
341
342static int el3_isa_remove(struct device *pdev,
343 unsigned int ndev)
344{
345 el3_device_remove(pdev);
346 dev_set_drvdata(pdev, NULL);
347 return 0;
348}
349
350#ifdef CONFIG_PM
351static int el3_isa_suspend(struct device *dev, unsigned int n,
352 pm_message_t state)
353{
354 current_tag = 0;
355 return el3_suspend(dev, state);
356}
357
358static int el3_isa_resume(struct device *dev, unsigned int n)
359{
360 struct net_device *ndev = dev_get_drvdata(dev);
361 int ioaddr = ndev->base_addr, err;
362 __be16 phys_addr[3];
363
364 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
365 ; /* Skip to next card when PnP card found */
366 if (err == 1)
367 return 0;
368 /* Set the adaptor tag so that the next card can be found. */
369 outb(0xd0 + ++current_tag, id_port);
370 /* Enable the card */
371 outb((ioaddr >> 4) | 0xe0, id_port);
372 EL3WINDOW(0);
373 if (inw(ioaddr) != 0x6d50)
374 return 1;
375 /* Free the interrupt so that some other card can use it. */
376 outw(0x0f00, ioaddr + WN0_IRQ);
377 return el3_resume(dev);
378}
379#endif
380
381static struct isa_driver el3_isa_driver = {
382 .match = el3_isa_match,
383 .remove = el3_isa_remove,
384#ifdef CONFIG_PM
385 .suspend = el3_isa_suspend,
386 .resume = el3_isa_resume,
387#endif
388 .driver = {
389 .name = "3c509"
390 },
391};
392static int isa_registered;
393
394#ifdef CONFIG_PNP
395static struct pnp_device_id el3_pnp_ids[] = {
396 { .id = "TCM5090" }, /* 3Com Etherlink III (TP) */
397 { .id = "TCM5091" }, /* 3Com Etherlink III */
398 { .id = "TCM5094" }, /* 3Com Etherlink III (combo) */
399 { .id = "TCM5095" }, /* 3Com Etherlink III (TPO) */
400 { .id = "TCM5098" }, /* 3Com Etherlink III (TPC) */
401 { .id = "PNP80f7" }, /* 3Com Etherlink III compatible */
402 { .id = "PNP80f8" }, /* 3Com Etherlink III compatible */
403 { .id = "" }
404};
405MODULE_DEVICE_TABLE(pnp, el3_pnp_ids);
406
407static int el3_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id)
408{
409 short i;
410 int ioaddr, irq, if_port;
411 __be16 phys_addr[3];
412 struct net_device *dev = NULL;
413 int err;
414
415 ioaddr = pnp_port_start(pdev, 0);
416 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-pnp"))
417 return -EBUSY;
418 irq = pnp_irq(pdev, 0);
419 EL3WINDOW(0);
420 for (i = 0; i < 3; i++)
421 phys_addr[i] = htons(read_eeprom(ioaddr, i));
422 if_port = read_eeprom(ioaddr, 8) >> 14;
423 dev = alloc_etherdev(sizeof(struct el3_private));
424 if (!dev) {
425 release_region(ioaddr, EL3_IO_EXTENT);
426 return -ENOMEM;
427 }
428 SET_NETDEV_DEV(dev, &pdev->dev);
429 netdev_boot_setup_check(dev);
430
431 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_PNP);
432 pnp_set_drvdata(pdev, dev);
433 err = el3_common_init(dev);
434
435 if (err) {
436 pnp_set_drvdata(pdev, NULL);
437 free_netdev(dev);
438 return err;
439 }
440
441 el3_devs[el3_cards++] = dev;
442 return 0;
443}
444
445static void el3_pnp_remove(struct pnp_dev *pdev)
446{
447 el3_common_remove(pnp_get_drvdata(pdev));
448 pnp_set_drvdata(pdev, NULL);
449}
450
451#ifdef CONFIG_PM
452static int el3_pnp_suspend(struct pnp_dev *pdev, pm_message_t state)
453{
454 return el3_suspend(&pdev->dev, state);
455}
456
457static int el3_pnp_resume(struct pnp_dev *pdev)
458{
459 return el3_resume(&pdev->dev);
460}
461#endif
462
463static struct pnp_driver el3_pnp_driver = {
464 .name = "3c509",
465 .id_table = el3_pnp_ids,
466 .probe = el3_pnp_probe,
467 .remove = el3_pnp_remove,
468#ifdef CONFIG_PM
469 .suspend = el3_pnp_suspend,
470 .resume = el3_pnp_resume,
471#endif
472};
473static int pnp_registered;
474#endif /* CONFIG_PNP */
475
476#ifdef CONFIG_EISA
477static struct eisa_device_id el3_eisa_ids[] = {
478 { "TCM5090" },
479 { "TCM5091" },
480 { "TCM5092" },
481 { "TCM5093" },
482 { "TCM5094" },
483 { "TCM5095" },
484 { "TCM5098" },
485 { "" }
486};
487MODULE_DEVICE_TABLE(eisa, el3_eisa_ids);
488
489static int el3_eisa_probe (struct device *device);
490
491static struct eisa_driver el3_eisa_driver = {
492 .id_table = el3_eisa_ids,
493 .driver = {
494 .name = "3c579",
495 .probe = el3_eisa_probe,
496 .remove = el3_device_remove,
497 .suspend = el3_suspend,
498 .resume = el3_resume,
499 }
500};
501static int eisa_registered;
502#endif
503
504static const struct net_device_ops netdev_ops = {
505 .ndo_open = el3_open,
506 .ndo_stop = el3_close,
507 .ndo_start_xmit = el3_start_xmit,
508 .ndo_get_stats = el3_get_stats,
509 .ndo_set_rx_mode = set_multicast_list,
510 .ndo_tx_timeout = el3_tx_timeout,
511 .ndo_change_mtu = eth_change_mtu,
512 .ndo_set_mac_address = eth_mac_addr,
513 .ndo_validate_addr = eth_validate_addr,
514#ifdef CONFIG_NET_POLL_CONTROLLER
515 .ndo_poll_controller = el3_poll_controller,
516#endif
517};
518
519static int el3_common_init(struct net_device *dev)
520{
521 struct el3_private *lp = netdev_priv(dev);
522 int err;
523 const char *if_names[] = {"10baseT", "AUI", "undefined", "BNC"};
524
525 spin_lock_init(&lp->lock);
526
527 if (dev->mem_start & 0x05) { /* xcvr codes 1/3/4/12 */
528 dev->if_port = (dev->mem_start & 0x0f);
529 } else { /* xcvr codes 0/8 */
530 /* use eeprom value, but save user's full-duplex selection */
531 dev->if_port |= (dev->mem_start & 0x08);
532 }
533
534 /* The EL3-specific entries in the device structure. */
535 dev->netdev_ops = &netdev_ops;
536 dev->watchdog_timeo = TX_TIMEOUT;
537 dev->ethtool_ops = ðtool_ops;
538
539 err = register_netdev(dev);
540 if (err) {
541 pr_err("Failed to register 3c5x9 at %#3.3lx, IRQ %d.\n",
542 dev->base_addr, dev->irq);
543 release_region(dev->base_addr, EL3_IO_EXTENT);
544 return err;
545 }
546
547 pr_info("%s: 3c5x9 found at %#3.3lx, %s port, address %pM, IRQ %d.\n",
548 dev->name, dev->base_addr, if_names[(dev->if_port & 0x03)],
549 dev->dev_addr, dev->irq);
550
551 if (el3_debug > 0)
552 pr_info("%s", version);
553 return 0;
554
555}
556
557static void el3_common_remove (struct net_device *dev)
558{
559 unregister_netdev (dev);
560 release_region(dev->base_addr, EL3_IO_EXTENT);
561 free_netdev (dev);
562}
563
564#ifdef CONFIG_EISA
565static int el3_eisa_probe(struct device *device)
566{
567 short i;
568 int ioaddr, irq, if_port;
569 __be16 phys_addr[3];
570 struct net_device *dev = NULL;
571 struct eisa_device *edev;
572 int err;
573
574 /* Yeepee, The driver framework is calling us ! */
575 edev = to_eisa_device (device);
576 ioaddr = edev->base_addr;
577
578 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c579-eisa"))
579 return -EBUSY;
580
581 /* Change the register set to the configuration window 0. */
582 outw(SelectWindow | 0, ioaddr + 0xC80 + EL3_CMD);
583
584 irq = inw(ioaddr + WN0_IRQ) >> 12;
585 if_port = inw(ioaddr + 6)>>14;
586 for (i = 0; i < 3; i++)
587 phys_addr[i] = htons(read_eeprom(ioaddr, i));
588
589 /* Restore the "Product ID" to the EEPROM read register. */
590 read_eeprom(ioaddr, 3);
591
592 dev = alloc_etherdev(sizeof (struct el3_private));
593 if (dev == NULL) {
594 release_region(ioaddr, EL3_IO_EXTENT);
595 return -ENOMEM;
596 }
597
598 SET_NETDEV_DEV(dev, device);
599 netdev_boot_setup_check(dev);
600
601 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_EISA);
602 eisa_set_drvdata (edev, dev);
603 err = el3_common_init(dev);
604
605 if (err) {
606 eisa_set_drvdata (edev, NULL);
607 free_netdev(dev);
608 return err;
609 }
610
611 el3_devs[el3_cards++] = dev;
612 return 0;
613}
614#endif
615
616/* This remove works for all device types.
617 *
618 * The net dev must be stored in the driver data field */
619static int el3_device_remove(struct device *device)
620{
621 struct net_device *dev;
622
623 dev = dev_get_drvdata(device);
624
625 el3_common_remove (dev);
626 return 0;
627}
628
629/* Read a word from the EEPROM using the regular EEPROM access register.
630 Assume that we are in register window zero.
631 */
632static ushort read_eeprom(int ioaddr, int index)
633{
634 outw(EEPROM_READ + index, ioaddr + 10);
635 /* Pause for at least 162 us. for the read to take place.
636 Some chips seem to require much longer */
637 mdelay(2);
638 return inw(ioaddr + 12);
639}
640
641/* Read a word from the EEPROM when in the ISA ID probe state. */
642static ushort id_read_eeprom(int index)
643{
644 int bit, word = 0;
645
646 /* Issue read command, and pause for at least 162 us. for it to complete.
647 Assume extra-fast 16Mhz bus. */
648 outb(EEPROM_READ + index, id_port);
649
650 /* Pause for at least 162 us. for the read to take place. */
651 /* Some chips seem to require much longer */
652 mdelay(4);
653
654 for (bit = 15; bit >= 0; bit--)
655 word = (word << 1) + (inb(id_port) & 0x01);
656
657 if (el3_debug > 3)
658 pr_debug(" 3c509 EEPROM word %d %#4.4x.\n", index, word);
659
660 return word;
661}
662
663
664static int
665el3_open(struct net_device *dev)
666{
667 int ioaddr = dev->base_addr;
668 int i;
669
670 outw(TxReset, ioaddr + EL3_CMD);
671 outw(RxReset, ioaddr + EL3_CMD);
672 outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
673
674 i = request_irq(dev->irq, el3_interrupt, 0, dev->name, dev);
675 if (i)
676 return i;
677
678 EL3WINDOW(0);
679 if (el3_debug > 3)
680 pr_debug("%s: Opening, IRQ %d status@%x %4.4x.\n", dev->name,
681 dev->irq, ioaddr + EL3_STATUS, inw(ioaddr + EL3_STATUS));
682
683 el3_up(dev);
684
685 if (el3_debug > 3)
686 pr_debug("%s: Opened 3c509 IRQ %d status %4.4x.\n",
687 dev->name, dev->irq, inw(ioaddr + EL3_STATUS));
688
689 return 0;
690}
691
692static void
693el3_tx_timeout (struct net_device *dev)
694{
695 int ioaddr = dev->base_addr;
696
697 /* Transmitter timeout, serious problems. */
698 pr_warn("%s: transmit timed out, Tx_status %2.2x status %4.4x Tx FIFO room %d\n",
699 dev->name, inb(ioaddr + TX_STATUS), inw(ioaddr + EL3_STATUS),
700 inw(ioaddr + TX_FREE));
701 dev->stats.tx_errors++;
702 dev->trans_start = jiffies; /* prevent tx timeout */
703 /* Issue TX_RESET and TX_START commands. */
704 outw(TxReset, ioaddr + EL3_CMD);
705 outw(TxEnable, ioaddr + EL3_CMD);
706 netif_wake_queue(dev);
707}
708
709
710static netdev_tx_t
711el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
712{
713 struct el3_private *lp = netdev_priv(dev);
714 int ioaddr = dev->base_addr;
715 unsigned long flags;
716
717 netif_stop_queue (dev);
718
719 dev->stats.tx_bytes += skb->len;
720
721 if (el3_debug > 4) {
722 pr_debug("%s: el3_start_xmit(length = %u) called, status %4.4x.\n",
723 dev->name, skb->len, inw(ioaddr + EL3_STATUS));
724 }
725 /*
726 * We lock the driver against other processors. Note
727 * we don't need to lock versus the IRQ as we suspended
728 * that. This means that we lose the ability to take
729 * an RX during a TX upload. That sucks a bit with SMP
730 * on an original 3c509 (2K buffer)
731 *
732 * Using disable_irq stops us crapping on other
733 * time sensitive devices.
734 */
735
736 spin_lock_irqsave(&lp->lock, flags);
737
738 /* Put out the doubleword header... */
739 outw(skb->len, ioaddr + TX_FIFO);
740 outw(0x00, ioaddr + TX_FIFO);
741 /* ... and the packet rounded to a doubleword. */
742 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
743
744 if (inw(ioaddr + TX_FREE) > 1536)
745 netif_start_queue(dev);
746 else
747 /* Interrupt us when the FIFO has room for max-sized packet. */
748 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
749
750 spin_unlock_irqrestore(&lp->lock, flags);
751
752 dev_consume_skb_any (skb);
753
754 /* Clear the Tx status stack. */
755 {
756 short tx_status;
757 int i = 4;
758
759 while (--i > 0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
760 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
761 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
762 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
763 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
764 }
765 }
766 return NETDEV_TX_OK;
767}
768
769/* The EL3 interrupt handler. */
770static irqreturn_t
771el3_interrupt(int irq, void *dev_id)
772{
773 struct net_device *dev = dev_id;
774 struct el3_private *lp;
775 int ioaddr, status;
776 int i = max_interrupt_work;
777
778 lp = netdev_priv(dev);
779 spin_lock(&lp->lock);
780
781 ioaddr = dev->base_addr;
782
783 if (el3_debug > 4) {
784 status = inw(ioaddr + EL3_STATUS);
785 pr_debug("%s: interrupt, status %4.4x.\n", dev->name, status);
786 }
787
788 while ((status = inw(ioaddr + EL3_STATUS)) &
789 (IntLatch | RxComplete | StatsFull)) {
790
791 if (status & RxComplete)
792 el3_rx(dev);
793
794 if (status & TxAvailable) {
795 if (el3_debug > 5)
796 pr_debug(" TX room bit was handled.\n");
797 /* There's room in the FIFO for a full-sized packet. */
798 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
799 netif_wake_queue (dev);
800 }
801 if (status & (AdapterFailure | RxEarly | StatsFull | TxComplete)) {
802 /* Handle all uncommon interrupts. */
803 if (status & StatsFull) /* Empty statistics. */
804 update_stats(dev);
805 if (status & RxEarly) { /* Rx early is unused. */
806 el3_rx(dev);
807 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
808 }
809 if (status & TxComplete) { /* Really Tx error. */
810 short tx_status;
811 int i = 4;
812
813 while (--i>0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
814 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
815 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
816 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
817 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
818 }
819 }
820 if (status & AdapterFailure) {
821 /* Adapter failure requires Rx reset and reinit. */
822 outw(RxReset, ioaddr + EL3_CMD);
823 /* Set the Rx filter to the current state. */
824 outw(SetRxFilter | RxStation | RxBroadcast
825 | (dev->flags & IFF_ALLMULTI ? RxMulticast : 0)
826 | (dev->flags & IFF_PROMISC ? RxProm : 0),
827 ioaddr + EL3_CMD);
828 outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
829 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
830 }
831 }
832
833 if (--i < 0) {
834 pr_err("%s: Infinite loop in interrupt, status %4.4x.\n",
835 dev->name, status);
836 /* Clear all interrupts. */
837 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
838 break;
839 }
840 /* Acknowledge the IRQ. */
841 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); /* Ack IRQ */
842 }
843
844 if (el3_debug > 4) {
845 pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name,
846 inw(ioaddr + EL3_STATUS));
847 }
848 spin_unlock(&lp->lock);
849 return IRQ_HANDLED;
850}
851
852
853#ifdef CONFIG_NET_POLL_CONTROLLER
854/*
855 * Polling receive - used by netconsole and other diagnostic tools
856 * to allow network i/o with interrupts disabled.
857 */
858static void el3_poll_controller(struct net_device *dev)
859{
860 disable_irq(dev->irq);
861 el3_interrupt(dev->irq, dev);
862 enable_irq(dev->irq);
863}
864#endif
865
866static struct net_device_stats *
867el3_get_stats(struct net_device *dev)
868{
869 struct el3_private *lp = netdev_priv(dev);
870 unsigned long flags;
871
872 /*
873 * This is fast enough not to bother with disable IRQ
874 * stuff.
875 */
876
877 spin_lock_irqsave(&lp->lock, flags);
878 update_stats(dev);
879 spin_unlock_irqrestore(&lp->lock, flags);
880 return &dev->stats;
881}
882
883/* Update statistics. We change to register window 6, so this should be run
884 single-threaded if the device is active. This is expected to be a rare
885 operation, and it's simpler for the rest of the driver to assume that
886 window 1 is always valid rather than use a special window-state variable.
887 */
888static void update_stats(struct net_device *dev)
889{
890 int ioaddr = dev->base_addr;
891
892 if (el3_debug > 5)
893 pr_debug(" Updating the statistics.\n");
894 /* Turn off statistics updates while reading. */
895 outw(StatsDisable, ioaddr + EL3_CMD);
896 /* Switch to the stats window, and read everything. */
897 EL3WINDOW(6);
898 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
899 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
900 /* Multiple collisions. */ inb(ioaddr + 2);
901 dev->stats.collisions += inb(ioaddr + 3);
902 dev->stats.tx_window_errors += inb(ioaddr + 4);
903 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
904 dev->stats.tx_packets += inb(ioaddr + 6);
905 /* Rx packets */ inb(ioaddr + 7);
906 /* Tx deferrals */ inb(ioaddr + 8);
907 inw(ioaddr + 10); /* Total Rx and Tx octets. */
908 inw(ioaddr + 12);
909
910 /* Back to window 1, and turn statistics back on. */
911 EL3WINDOW(1);
912 outw(StatsEnable, ioaddr + EL3_CMD);
913}
914
915static int
916el3_rx(struct net_device *dev)
917{
918 int ioaddr = dev->base_addr;
919 short rx_status;
920
921 if (el3_debug > 5)
922 pr_debug(" In rx_packet(), status %4.4x, rx_status %4.4x.\n",
923 inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
924 while ((rx_status = inw(ioaddr + RX_STATUS)) > 0) {
925 if (rx_status & 0x4000) { /* Error, update stats. */
926 short error = rx_status & 0x3800;
927
928 outw(RxDiscard, ioaddr + EL3_CMD);
929 dev->stats.rx_errors++;
930 switch (error) {
931 case 0x0000: dev->stats.rx_over_errors++; break;
932 case 0x0800: dev->stats.rx_length_errors++; break;
933 case 0x1000: dev->stats.rx_frame_errors++; break;
934 case 0x1800: dev->stats.rx_length_errors++; break;
935 case 0x2000: dev->stats.rx_frame_errors++; break;
936 case 0x2800: dev->stats.rx_crc_errors++; break;
937 }
938 } else {
939 short pkt_len = rx_status & 0x7ff;
940 struct sk_buff *skb;
941
942 skb = netdev_alloc_skb(dev, pkt_len + 5);
943 if (el3_debug > 4)
944 pr_debug("Receiving packet size %d status %4.4x.\n",
945 pkt_len, rx_status);
946 if (skb != NULL) {
947 skb_reserve(skb, 2); /* Align IP on 16 byte */
948
949 /* 'skb->data' points to the start of sk_buff data area. */
950 insl(ioaddr + RX_FIFO, skb_put(skb,pkt_len),
951 (pkt_len + 3) >> 2);
952
953 outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */
954 skb->protocol = eth_type_trans(skb,dev);
955 netif_rx(skb);
956 dev->stats.rx_bytes += pkt_len;
957 dev->stats.rx_packets++;
958 continue;
959 }
960 outw(RxDiscard, ioaddr + EL3_CMD);
961 dev->stats.rx_dropped++;
962 if (el3_debug)
963 pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n",
964 dev->name, pkt_len);
965 }
966 inw(ioaddr + EL3_STATUS); /* Delay. */
967 while (inw(ioaddr + EL3_STATUS) & 0x1000)
968 pr_debug(" Waiting for 3c509 to discard packet, status %x.\n",
969 inw(ioaddr + EL3_STATUS) );
970 }
971
972 return 0;
973}
974
975/*
976 * Set or clear the multicast filter for this adaptor.
977 */
978static void
979set_multicast_list(struct net_device *dev)
980{
981 unsigned long flags;
982 struct el3_private *lp = netdev_priv(dev);
983 int ioaddr = dev->base_addr;
984 int mc_count = netdev_mc_count(dev);
985
986 if (el3_debug > 1) {
987 static int old;
988 if (old != mc_count) {
989 old = mc_count;
990 pr_debug("%s: Setting Rx mode to %d addresses.\n",
991 dev->name, mc_count);
992 }
993 }
994 spin_lock_irqsave(&lp->lock, flags);
995 if (dev->flags&IFF_PROMISC) {
996 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
997 ioaddr + EL3_CMD);
998 }
999 else if (mc_count || (dev->flags&IFF_ALLMULTI)) {
1000 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast, ioaddr + EL3_CMD);
1001 }
1002 else
1003 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1004 spin_unlock_irqrestore(&lp->lock, flags);
1005}
1006
1007static int
1008el3_close(struct net_device *dev)
1009{
1010 int ioaddr = dev->base_addr;
1011 struct el3_private *lp = netdev_priv(dev);
1012
1013 if (el3_debug > 2)
1014 pr_debug("%s: Shutting down ethercard.\n", dev->name);
1015
1016 el3_down(dev);
1017
1018 free_irq(dev->irq, dev);
1019 /* Switching back to window 0 disables the IRQ. */
1020 EL3WINDOW(0);
1021 if (lp->type != EL3_EISA) {
1022 /* But we explicitly zero the IRQ line select anyway. Don't do
1023 * it on EISA cards, it prevents the module from getting an
1024 * IRQ after unload+reload... */
1025 outw(0x0f00, ioaddr + WN0_IRQ);
1026 }
1027
1028 return 0;
1029}
1030
1031static int
1032el3_link_ok(struct net_device *dev)
1033{
1034 int ioaddr = dev->base_addr;
1035 u16 tmp;
1036
1037 EL3WINDOW(4);
1038 tmp = inw(ioaddr + WN4_MEDIA);
1039 EL3WINDOW(1);
1040 return tmp & (1<<11);
1041}
1042
1043static int
1044el3_netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
1045{
1046 u16 tmp;
1047 int ioaddr = dev->base_addr;
1048
1049 EL3WINDOW(0);
1050 /* obtain current transceiver via WN4_MEDIA? */
1051 tmp = inw(ioaddr + WN0_ADDR_CONF);
1052 ecmd->transceiver = XCVR_INTERNAL;
1053 switch (tmp >> 14) {
1054 case 0:
1055 ecmd->port = PORT_TP;
1056 break;
1057 case 1:
1058 ecmd->port = PORT_AUI;
1059 ecmd->transceiver = XCVR_EXTERNAL;
1060 break;
1061 case 3:
1062 ecmd->port = PORT_BNC;
1063 default:
1064 break;
1065 }
1066
1067 ecmd->duplex = DUPLEX_HALF;
1068 ecmd->supported = 0;
1069 tmp = inw(ioaddr + WN0_CONF_CTRL);
1070 if (tmp & (1<<13))
1071 ecmd->supported |= SUPPORTED_AUI;
1072 if (tmp & (1<<12))
1073 ecmd->supported |= SUPPORTED_BNC;
1074 if (tmp & (1<<9)) {
1075 ecmd->supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half |
1076 SUPPORTED_10baseT_Full; /* hmm... */
1077 EL3WINDOW(4);
1078 tmp = inw(ioaddr + WN4_NETDIAG);
1079 if (tmp & FD_ENABLE)
1080 ecmd->duplex = DUPLEX_FULL;
1081 }
1082
1083 ethtool_cmd_speed_set(ecmd, SPEED_10);
1084 EL3WINDOW(1);
1085 return 0;
1086}
1087
1088static int
1089el3_netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
1090{
1091 u16 tmp;
1092 int ioaddr = dev->base_addr;
1093
1094 if (ecmd->speed != SPEED_10)
1095 return -EINVAL;
1096 if ((ecmd->duplex != DUPLEX_HALF) && (ecmd->duplex != DUPLEX_FULL))
1097 return -EINVAL;
1098 if ((ecmd->transceiver != XCVR_INTERNAL) && (ecmd->transceiver != XCVR_EXTERNAL))
1099 return -EINVAL;
1100
1101 /* change XCVR type */
1102 EL3WINDOW(0);
1103 tmp = inw(ioaddr + WN0_ADDR_CONF);
1104 switch (ecmd->port) {
1105 case PORT_TP:
1106 tmp &= ~(3<<14);
1107 dev->if_port = 0;
1108 break;
1109 case PORT_AUI:
1110 tmp |= (1<<14);
1111 dev->if_port = 1;
1112 break;
1113 case PORT_BNC:
1114 tmp |= (3<<14);
1115 dev->if_port = 3;
1116 break;
1117 default:
1118 return -EINVAL;
1119 }
1120
1121 outw(tmp, ioaddr + WN0_ADDR_CONF);
1122 if (dev->if_port == 3) {
1123 /* fire up the DC-DC convertor if BNC gets enabled */
1124 tmp = inw(ioaddr + WN0_ADDR_CONF);
1125 if (tmp & (3 << 14)) {
1126 outw(StartCoax, ioaddr + EL3_CMD);
1127 udelay(800);
1128 } else
1129 return -EIO;
1130 }
1131
1132 EL3WINDOW(4);
1133 tmp = inw(ioaddr + WN4_NETDIAG);
1134 if (ecmd->duplex == DUPLEX_FULL)
1135 tmp |= FD_ENABLE;
1136 else
1137 tmp &= ~FD_ENABLE;
1138 outw(tmp, ioaddr + WN4_NETDIAG);
1139 EL3WINDOW(1);
1140
1141 return 0;
1142}
1143
1144static void el3_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1145{
1146 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
1147 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
1148}
1149
1150static int el3_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1151{
1152 struct el3_private *lp = netdev_priv(dev);
1153 int ret;
1154
1155 spin_lock_irq(&lp->lock);
1156 ret = el3_netdev_get_ecmd(dev, ecmd);
1157 spin_unlock_irq(&lp->lock);
1158 return ret;
1159}
1160
1161static int el3_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1162{
1163 struct el3_private *lp = netdev_priv(dev);
1164 int ret;
1165
1166 spin_lock_irq(&lp->lock);
1167 ret = el3_netdev_set_ecmd(dev, ecmd);
1168 spin_unlock_irq(&lp->lock);
1169 return ret;
1170}
1171
1172static u32 el3_get_link(struct net_device *dev)
1173{
1174 struct el3_private *lp = netdev_priv(dev);
1175 u32 ret;
1176
1177 spin_lock_irq(&lp->lock);
1178 ret = el3_link_ok(dev);
1179 spin_unlock_irq(&lp->lock);
1180 return ret;
1181}
1182
1183static u32 el3_get_msglevel(struct net_device *dev)
1184{
1185 return el3_debug;
1186}
1187
1188static void el3_set_msglevel(struct net_device *dev, u32 v)
1189{
1190 el3_debug = v;
1191}
1192
1193static const struct ethtool_ops ethtool_ops = {
1194 .get_drvinfo = el3_get_drvinfo,
1195 .get_settings = el3_get_settings,
1196 .set_settings = el3_set_settings,
1197 .get_link = el3_get_link,
1198 .get_msglevel = el3_get_msglevel,
1199 .set_msglevel = el3_set_msglevel,
1200};
1201
1202static void
1203el3_down(struct net_device *dev)
1204{
1205 int ioaddr = dev->base_addr;
1206
1207 netif_stop_queue(dev);
1208
1209 /* Turn off statistics ASAP. We update lp->stats below. */
1210 outw(StatsDisable, ioaddr + EL3_CMD);
1211
1212 /* Disable the receiver and transmitter. */
1213 outw(RxDisable, ioaddr + EL3_CMD);
1214 outw(TxDisable, ioaddr + EL3_CMD);
1215
1216 if (dev->if_port == 3)
1217 /* Turn off thinnet power. Green! */
1218 outw(StopCoax, ioaddr + EL3_CMD);
1219 else if (dev->if_port == 0) {
1220 /* Disable link beat and jabber, if_port may change here next open(). */
1221 EL3WINDOW(4);
1222 outw(inw(ioaddr + WN4_MEDIA) & ~MEDIA_TP, ioaddr + WN4_MEDIA);
1223 }
1224
1225 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1226
1227 update_stats(dev);
1228}
1229
1230static void
1231el3_up(struct net_device *dev)
1232{
1233 int i, sw_info, net_diag;
1234 int ioaddr = dev->base_addr;
1235
1236 /* Activating the board required and does no harm otherwise */
1237 outw(0x0001, ioaddr + 4);
1238
1239 /* Set the IRQ line. */
1240 outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ);
1241
1242 /* Set the station address in window 2 each time opened. */
1243 EL3WINDOW(2);
1244
1245 for (i = 0; i < 6; i++)
1246 outb(dev->dev_addr[i], ioaddr + i);
1247
1248 if ((dev->if_port & 0x03) == 3) /* BNC interface */
1249 /* Start the thinnet transceiver. We should really wait 50ms...*/
1250 outw(StartCoax, ioaddr + EL3_CMD);
1251 else if ((dev->if_port & 0x03) == 0) { /* 10baseT interface */
1252 /* Combine secondary sw_info word (the adapter level) and primary
1253 sw_info word (duplex setting plus other useless bits) */
1254 EL3WINDOW(0);
1255 sw_info = (read_eeprom(ioaddr, 0x14) & 0x400f) |
1256 (read_eeprom(ioaddr, 0x0d) & 0xBff0);
1257
1258 EL3WINDOW(4);
1259 net_diag = inw(ioaddr + WN4_NETDIAG);
1260 net_diag = (net_diag | FD_ENABLE); /* temporarily assume full-duplex will be set */
1261 pr_info("%s: ", dev->name);
1262 switch (dev->if_port & 0x0c) {
1263 case 12:
1264 /* force full-duplex mode if 3c5x9b */
1265 if (sw_info & 0x000f) {
1266 pr_cont("Forcing 3c5x9b full-duplex mode");
1267 break;
1268 }
1269 case 8:
1270 /* set full-duplex mode based on eeprom config setting */
1271 if ((sw_info & 0x000f) && (sw_info & 0x8000)) {
1272 pr_cont("Setting 3c5x9b full-duplex mode (from EEPROM configuration bit)");
1273 break;
1274 }
1275 default:
1276 /* xcvr=(0 || 4) OR user has an old 3c5x9 non "B" model */
1277 pr_cont("Setting 3c5x9/3c5x9B half-duplex mode");
1278 net_diag = (net_diag & ~FD_ENABLE); /* disable full duplex */
1279 }
1280
1281 outw(net_diag, ioaddr + WN4_NETDIAG);
1282 pr_cont(" if_port: %d, sw_info: %4.4x\n", dev->if_port, sw_info);
1283 if (el3_debug > 3)
1284 pr_debug("%s: 3c5x9 net diag word is now: %4.4x.\n", dev->name, net_diag);
1285 /* Enable link beat and jabber check. */
1286 outw(inw(ioaddr + WN4_MEDIA) | MEDIA_TP, ioaddr + WN4_MEDIA);
1287 }
1288
1289 /* Switch to the stats window, and clear all stats by reading. */
1290 outw(StatsDisable, ioaddr + EL3_CMD);
1291 EL3WINDOW(6);
1292 for (i = 0; i < 9; i++)
1293 inb(ioaddr + i);
1294 inw(ioaddr + 10);
1295 inw(ioaddr + 12);
1296
1297 /* Switch to register set 1 for normal use. */
1298 EL3WINDOW(1);
1299
1300 /* Accept b-case and phys addr only. */
1301 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1302 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
1303
1304 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
1305 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
1306 /* Allow status bits to be seen. */
1307 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
1308 /* Ack all pending events, and set active indicator mask. */
1309 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
1310 ioaddr + EL3_CMD);
1311 outw(SetIntrEnb | IntLatch|TxAvailable|TxComplete|RxComplete|StatsFull,
1312 ioaddr + EL3_CMD);
1313
1314 netif_start_queue(dev);
1315}
1316
1317/* Power Management support functions */
1318#ifdef CONFIG_PM
1319
1320static int
1321el3_suspend(struct device *pdev, pm_message_t state)
1322{
1323 unsigned long flags;
1324 struct net_device *dev;
1325 struct el3_private *lp;
1326 int ioaddr;
1327
1328 dev = dev_get_drvdata(pdev);
1329 lp = netdev_priv(dev);
1330 ioaddr = dev->base_addr;
1331
1332 spin_lock_irqsave(&lp->lock, flags);
1333
1334 if (netif_running(dev))
1335 netif_device_detach(dev);
1336
1337 el3_down(dev);
1338 outw(PowerDown, ioaddr + EL3_CMD);
1339
1340 spin_unlock_irqrestore(&lp->lock, flags);
1341 return 0;
1342}
1343
1344static int
1345el3_resume(struct device *pdev)
1346{
1347 unsigned long flags;
1348 struct net_device *dev;
1349 struct el3_private *lp;
1350 int ioaddr;
1351
1352 dev = dev_get_drvdata(pdev);
1353 lp = netdev_priv(dev);
1354 ioaddr = dev->base_addr;
1355
1356 spin_lock_irqsave(&lp->lock, flags);
1357
1358 outw(PowerUp, ioaddr + EL3_CMD);
1359 EL3WINDOW(0);
1360 el3_up(dev);
1361
1362 if (netif_running(dev))
1363 netif_device_attach(dev);
1364
1365 spin_unlock_irqrestore(&lp->lock, flags);
1366 return 0;
1367}
1368
1369#endif /* CONFIG_PM */
1370
1371module_param(debug,int, 0);
1372module_param_array(irq, int, NULL, 0);
1373module_param(max_interrupt_work, int, 0);
1374MODULE_PARM_DESC(debug, "debug level (0-6)");
1375MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
1376MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt");
1377#ifdef CONFIG_PNP
1378module_param(nopnp, int, 0);
1379MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)");
1380#endif /* CONFIG_PNP */
1381MODULE_DESCRIPTION("3Com Etherlink III (3c509, 3c509B, 3c529, 3c579) ethernet driver");
1382MODULE_LICENSE("GPL");
1383
1384static int __init el3_init_module(void)
1385{
1386 int ret = 0;
1387
1388 if (debug >= 0)
1389 el3_debug = debug;
1390
1391#ifdef CONFIG_PNP
1392 if (!nopnp) {
1393 ret = pnp_register_driver(&el3_pnp_driver);
1394 if (!ret)
1395 pnp_registered = 1;
1396 }
1397#endif
1398 /* Select an open I/O location at 0x1*0 to do ISA contention select. */
1399 /* Start with 0x110 to avoid some sound cards.*/
1400 for (id_port = 0x110 ; id_port < 0x200; id_port += 0x10) {
1401 if (!request_region(id_port, 1, "3c509-control"))
1402 continue;
1403 outb(0x00, id_port);
1404 outb(0xff, id_port);
1405 if (inb(id_port) & 0x01)
1406 break;
1407 else
1408 release_region(id_port, 1);
1409 }
1410 if (id_port >= 0x200) {
1411 id_port = 0;
1412 pr_err("No I/O port available for 3c509 activation.\n");
1413 } else {
1414 ret = isa_register_driver(&el3_isa_driver, EL3_MAX_CARDS);
1415 if (!ret)
1416 isa_registered = 1;
1417 }
1418#ifdef CONFIG_EISA
1419 ret = eisa_driver_register(&el3_eisa_driver);
1420 if (!ret)
1421 eisa_registered = 1;
1422#endif
1423
1424#ifdef CONFIG_PNP
1425 if (pnp_registered)
1426 ret = 0;
1427#endif
1428 if (isa_registered)
1429 ret = 0;
1430#ifdef CONFIG_EISA
1431 if (eisa_registered)
1432 ret = 0;
1433#endif
1434 return ret;
1435}
1436
1437static void __exit el3_cleanup_module(void)
1438{
1439#ifdef CONFIG_PNP
1440 if (pnp_registered)
1441 pnp_unregister_driver(&el3_pnp_driver);
1442#endif
1443 if (isa_registered)
1444 isa_unregister_driver(&el3_isa_driver);
1445 if (id_port)
1446 release_region(id_port, 1);
1447#ifdef CONFIG_EISA
1448 if (eisa_registered)
1449 eisa_driver_unregister(&el3_eisa_driver);
1450#endif
1451}
1452
1453module_init (el3_init_module);
1454module_exit (el3_cleanup_module);