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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
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 memcpy(dev->dev_addr, phys_addr, ETH_ALEN);
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 netdev_boot_setup_check(dev);
306
307 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-isa")) {
308 free_netdev(dev);
309 return 0;
310 }
311
312 /* Set the adaptor tag so that the next card can be found. */
313 outb(0xd0 + ++current_tag, id_port);
314
315 /* Activate the adaptor at the EEPROM location. */
316 outb((ioaddr >> 4) | 0xe0, id_port);
317
318 EL3WINDOW(0);
319 if (inw(ioaddr) != 0x6d50) {
320 free_netdev(dev);
321 return 0;
322 }
323
324 /* Free the interrupt so that some other card can use it. */
325 outw(0x0f00, ioaddr + WN0_IRQ);
326
327 el3_dev_fill(dev, phys_addr, ioaddr, isa_irq, if_port, EL3_ISA);
328 dev_set_drvdata(pdev, dev);
329 if (el3_common_init(dev)) {
330 free_netdev(dev);
331 return 0;
332 }
333
334 el3_devs[el3_cards++] = dev;
335 return 1;
336}
337
338static void el3_isa_remove(struct device *pdev,
339 unsigned int ndev)
340{
341 el3_device_remove(pdev);
342 dev_set_drvdata(pdev, NULL);
343}
344
345#ifdef CONFIG_PM
346static int el3_isa_suspend(struct device *dev, unsigned int n,
347 pm_message_t state)
348{
349 current_tag = 0;
350 return el3_suspend(dev, state);
351}
352
353static int el3_isa_resume(struct device *dev, unsigned int n)
354{
355 struct net_device *ndev = dev_get_drvdata(dev);
356 int ioaddr = ndev->base_addr, err;
357 __be16 phys_addr[3];
358
359 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
360 ; /* Skip to next card when PnP card found */
361 if (err == 1)
362 return 0;
363 /* Set the adaptor tag so that the next card can be found. */
364 outb(0xd0 + ++current_tag, id_port);
365 /* Enable the card */
366 outb((ioaddr >> 4) | 0xe0, id_port);
367 EL3WINDOW(0);
368 if (inw(ioaddr) != 0x6d50)
369 return 1;
370 /* Free the interrupt so that some other card can use it. */
371 outw(0x0f00, ioaddr + WN0_IRQ);
372 return el3_resume(dev);
373}
374#endif
375
376static struct isa_driver el3_isa_driver = {
377 .match = el3_isa_match,
378 .remove = el3_isa_remove,
379#ifdef CONFIG_PM
380 .suspend = el3_isa_suspend,
381 .resume = el3_isa_resume,
382#endif
383 .driver = {
384 .name = "3c509"
385 },
386};
387static int isa_registered;
388
389#ifdef CONFIG_PNP
390static const struct pnp_device_id el3_pnp_ids[] = {
391 { .id = "TCM5090" }, /* 3Com Etherlink III (TP) */
392 { .id = "TCM5091" }, /* 3Com Etherlink III */
393 { .id = "TCM5094" }, /* 3Com Etherlink III (combo) */
394 { .id = "TCM5095" }, /* 3Com Etherlink III (TPO) */
395 { .id = "TCM5098" }, /* 3Com Etherlink III (TPC) */
396 { .id = "PNP80f7" }, /* 3Com Etherlink III compatible */
397 { .id = "PNP80f8" }, /* 3Com Etherlink III compatible */
398 { .id = "" }
399};
400MODULE_DEVICE_TABLE(pnp, el3_pnp_ids);
401
402static int el3_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id)
403{
404 short i;
405 int ioaddr, irq, if_port;
406 __be16 phys_addr[3];
407 struct net_device *dev = NULL;
408 int err;
409
410 ioaddr = pnp_port_start(pdev, 0);
411 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-pnp"))
412 return -EBUSY;
413 irq = pnp_irq(pdev, 0);
414 EL3WINDOW(0);
415 for (i = 0; i < 3; i++)
416 phys_addr[i] = htons(read_eeprom(ioaddr, i));
417 if_port = read_eeprom(ioaddr, 8) >> 14;
418 dev = alloc_etherdev(sizeof(struct el3_private));
419 if (!dev) {
420 release_region(ioaddr, EL3_IO_EXTENT);
421 return -ENOMEM;
422 }
423 SET_NETDEV_DEV(dev, &pdev->dev);
424 netdev_boot_setup_check(dev);
425
426 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_PNP);
427 pnp_set_drvdata(pdev, dev);
428 err = el3_common_init(dev);
429
430 if (err) {
431 pnp_set_drvdata(pdev, NULL);
432 free_netdev(dev);
433 return err;
434 }
435
436 el3_devs[el3_cards++] = dev;
437 return 0;
438}
439
440static void el3_pnp_remove(struct pnp_dev *pdev)
441{
442 el3_common_remove(pnp_get_drvdata(pdev));
443 pnp_set_drvdata(pdev, NULL);
444}
445
446#ifdef CONFIG_PM
447static int el3_pnp_suspend(struct pnp_dev *pdev, pm_message_t state)
448{
449 return el3_suspend(&pdev->dev, state);
450}
451
452static int el3_pnp_resume(struct pnp_dev *pdev)
453{
454 return el3_resume(&pdev->dev);
455}
456#endif
457
458static struct pnp_driver el3_pnp_driver = {
459 .name = "3c509",
460 .id_table = el3_pnp_ids,
461 .probe = el3_pnp_probe,
462 .remove = el3_pnp_remove,
463#ifdef CONFIG_PM
464 .suspend = el3_pnp_suspend,
465 .resume = el3_pnp_resume,
466#endif
467};
468static int pnp_registered;
469#endif /* CONFIG_PNP */
470
471#ifdef CONFIG_EISA
472static const struct eisa_device_id el3_eisa_ids[] = {
473 { "TCM5090" },
474 { "TCM5091" },
475 { "TCM5092" },
476 { "TCM5093" },
477 { "TCM5094" },
478 { "TCM5095" },
479 { "TCM5098" },
480 { "" }
481};
482MODULE_DEVICE_TABLE(eisa, el3_eisa_ids);
483
484static int el3_eisa_probe (struct device *device);
485
486static struct eisa_driver el3_eisa_driver = {
487 .id_table = el3_eisa_ids,
488 .driver = {
489 .name = "3c579",
490 .probe = el3_eisa_probe,
491 .remove = el3_device_remove,
492 .suspend = el3_suspend,
493 .resume = el3_resume,
494 }
495};
496static int eisa_registered;
497#endif
498
499static const struct net_device_ops netdev_ops = {
500 .ndo_open = el3_open,
501 .ndo_stop = el3_close,
502 .ndo_start_xmit = el3_start_xmit,
503 .ndo_get_stats = el3_get_stats,
504 .ndo_set_rx_mode = set_multicast_list,
505 .ndo_tx_timeout = el3_tx_timeout,
506 .ndo_set_mac_address = eth_mac_addr,
507 .ndo_validate_addr = eth_validate_addr,
508#ifdef CONFIG_NET_POLL_CONTROLLER
509 .ndo_poll_controller = el3_poll_controller,
510#endif
511};
512
513static int el3_common_init(struct net_device *dev)
514{
515 struct el3_private *lp = netdev_priv(dev);
516 int err;
517 const char *if_names[] = {"10baseT", "AUI", "undefined", "BNC"};
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 netdev_boot_setup_check(dev);
592
593 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_EISA);
594 eisa_set_drvdata (edev, dev);
595 err = el3_common_init(dev);
596
597 if (err) {
598 eisa_set_drvdata (edev, NULL);
599 free_netdev(dev);
600 return err;
601 }
602
603 el3_devs[el3_cards++] = dev;
604 return 0;
605}
606#endif
607
608/* This remove works for all device types.
609 *
610 * The net dev must be stored in the driver data field */
611static int el3_device_remove(struct device *device)
612{
613 struct net_device *dev;
614
615 dev = dev_get_drvdata(device);
616
617 el3_common_remove (dev);
618 return 0;
619}
620
621/* Read a word from the EEPROM using the regular EEPROM access register.
622 Assume that we are in register window zero.
623 */
624static ushort read_eeprom(int ioaddr, int index)
625{
626 outw(EEPROM_READ + index, ioaddr + 10);
627 /* Pause for at least 162 us. for the read to take place.
628 Some chips seem to require much longer */
629 mdelay(2);
630 return inw(ioaddr + 12);
631}
632
633/* Read a word from the EEPROM when in the ISA ID probe state. */
634static ushort id_read_eeprom(int index)
635{
636 int bit, word = 0;
637
638 /* Issue read command, and pause for at least 162 us. for it to complete.
639 Assume extra-fast 16Mhz bus. */
640 outb(EEPROM_READ + index, id_port);
641
642 /* Pause for at least 162 us. for the read to take place. */
643 /* Some chips seem to require much longer */
644 mdelay(4);
645
646 for (bit = 15; bit >= 0; bit--)
647 word = (word << 1) + (inb(id_port) & 0x01);
648
649 if (el3_debug > 3)
650 pr_debug(" 3c509 EEPROM word %d %#4.4x.\n", index, word);
651
652 return word;
653}
654
655
656static int
657el3_open(struct net_device *dev)
658{
659 int ioaddr = dev->base_addr;
660 int i;
661
662 outw(TxReset, ioaddr + EL3_CMD);
663 outw(RxReset, ioaddr + EL3_CMD);
664 outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
665
666 i = request_irq(dev->irq, el3_interrupt, 0, dev->name, dev);
667 if (i)
668 return i;
669
670 EL3WINDOW(0);
671 if (el3_debug > 3)
672 pr_debug("%s: Opening, IRQ %d status@%x %4.4x.\n", dev->name,
673 dev->irq, ioaddr + EL3_STATUS, inw(ioaddr + EL3_STATUS));
674
675 el3_up(dev);
676
677 if (el3_debug > 3)
678 pr_debug("%s: Opened 3c509 IRQ %d status %4.4x.\n",
679 dev->name, dev->irq, inw(ioaddr + EL3_STATUS));
680
681 return 0;
682}
683
684static void
685el3_tx_timeout (struct net_device *dev, unsigned int txqueue)
686{
687 int ioaddr = dev->base_addr;
688
689 /* Transmitter timeout, serious problems. */
690 pr_warn("%s: transmit timed out, Tx_status %2.2x status %4.4x Tx FIFO room %d\n",
691 dev->name, inb(ioaddr + TX_STATUS), inw(ioaddr + EL3_STATUS),
692 inw(ioaddr + TX_FREE));
693 dev->stats.tx_errors++;
694 netif_trans_update(dev); /* prevent tx timeout */
695 /* Issue TX_RESET and TX_START commands. */
696 outw(TxReset, ioaddr + EL3_CMD);
697 outw(TxEnable, ioaddr + EL3_CMD);
698 netif_wake_queue(dev);
699}
700
701
702static netdev_tx_t
703el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
704{
705 struct el3_private *lp = netdev_priv(dev);
706 int ioaddr = dev->base_addr;
707 unsigned long flags;
708
709 netif_stop_queue (dev);
710
711 dev->stats.tx_bytes += skb->len;
712
713 if (el3_debug > 4) {
714 pr_debug("%s: el3_start_xmit(length = %u) called, status %4.4x.\n",
715 dev->name, skb->len, inw(ioaddr + EL3_STATUS));
716 }
717 /*
718 * We lock the driver against other processors. Note
719 * we don't need to lock versus the IRQ as we suspended
720 * that. This means that we lose the ability to take
721 * an RX during a TX upload. That sucks a bit with SMP
722 * on an original 3c509 (2K buffer)
723 *
724 * Using disable_irq stops us crapping on other
725 * time sensitive devices.
726 */
727
728 spin_lock_irqsave(&lp->lock, flags);
729
730 /* Put out the doubleword header... */
731 outw(skb->len, ioaddr + TX_FIFO);
732 outw(0x00, ioaddr + TX_FIFO);
733 /* ... and the packet rounded to a doubleword. */
734 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
735
736 if (inw(ioaddr + TX_FREE) > 1536)
737 netif_start_queue(dev);
738 else
739 /* Interrupt us when the FIFO has room for max-sized packet. */
740 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
741
742 spin_unlock_irqrestore(&lp->lock, flags);
743
744 dev_consume_skb_any (skb);
745
746 /* Clear the Tx status stack. */
747 {
748 short tx_status;
749 int i = 4;
750
751 while (--i > 0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
752 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
753 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
754 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
755 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
756 }
757 }
758 return NETDEV_TX_OK;
759}
760
761/* The EL3 interrupt handler. */
762static irqreturn_t
763el3_interrupt(int irq, void *dev_id)
764{
765 struct net_device *dev = dev_id;
766 struct el3_private *lp;
767 int ioaddr, status;
768 int i = max_interrupt_work;
769
770 lp = netdev_priv(dev);
771 spin_lock(&lp->lock);
772
773 ioaddr = dev->base_addr;
774
775 if (el3_debug > 4) {
776 status = inw(ioaddr + EL3_STATUS);
777 pr_debug("%s: interrupt, status %4.4x.\n", dev->name, status);
778 }
779
780 while ((status = inw(ioaddr + EL3_STATUS)) &
781 (IntLatch | RxComplete | StatsFull)) {
782
783 if (status & RxComplete)
784 el3_rx(dev);
785
786 if (status & TxAvailable) {
787 if (el3_debug > 5)
788 pr_debug(" TX room bit was handled.\n");
789 /* There's room in the FIFO for a full-sized packet. */
790 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
791 netif_wake_queue (dev);
792 }
793 if (status & (AdapterFailure | RxEarly | StatsFull | TxComplete)) {
794 /* Handle all uncommon interrupts. */
795 if (status & StatsFull) /* Empty statistics. */
796 update_stats(dev);
797 if (status & RxEarly) { /* Rx early is unused. */
798 el3_rx(dev);
799 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
800 }
801 if (status & TxComplete) { /* Really Tx error. */
802 short tx_status;
803 int i = 4;
804
805 while (--i>0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
806 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
807 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
808 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
809 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
810 }
811 }
812 if (status & AdapterFailure) {
813 /* Adapter failure requires Rx reset and reinit. */
814 outw(RxReset, ioaddr + EL3_CMD);
815 /* Set the Rx filter to the current state. */
816 outw(SetRxFilter | RxStation | RxBroadcast
817 | (dev->flags & IFF_ALLMULTI ? RxMulticast : 0)
818 | (dev->flags & IFF_PROMISC ? RxProm : 0),
819 ioaddr + EL3_CMD);
820 outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
821 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
822 }
823 }
824
825 if (--i < 0) {
826 pr_err("%s: Infinite loop in interrupt, status %4.4x.\n",
827 dev->name, status);
828 /* Clear all interrupts. */
829 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
830 break;
831 }
832 /* Acknowledge the IRQ. */
833 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); /* Ack IRQ */
834 }
835
836 if (el3_debug > 4) {
837 pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name,
838 inw(ioaddr + EL3_STATUS));
839 }
840 spin_unlock(&lp->lock);
841 return IRQ_HANDLED;
842}
843
844
845#ifdef CONFIG_NET_POLL_CONTROLLER
846/*
847 * Polling receive - used by netconsole and other diagnostic tools
848 * to allow network i/o with interrupts disabled.
849 */
850static void el3_poll_controller(struct net_device *dev)
851{
852 disable_irq(dev->irq);
853 el3_interrupt(dev->irq, dev);
854 enable_irq(dev->irq);
855}
856#endif
857
858static struct net_device_stats *
859el3_get_stats(struct net_device *dev)
860{
861 struct el3_private *lp = netdev_priv(dev);
862 unsigned long flags;
863
864 /*
865 * This is fast enough not to bother with disable IRQ
866 * stuff.
867 */
868
869 spin_lock_irqsave(&lp->lock, flags);
870 update_stats(dev);
871 spin_unlock_irqrestore(&lp->lock, flags);
872 return &dev->stats;
873}
874
875/* Update statistics. We change to register window 6, so this should be run
876 single-threaded if the device is active. This is expected to be a rare
877 operation, and it's simpler for the rest of the driver to assume that
878 window 1 is always valid rather than use a special window-state variable.
879 */
880static void update_stats(struct net_device *dev)
881{
882 int ioaddr = dev->base_addr;
883
884 if (el3_debug > 5)
885 pr_debug(" Updating the statistics.\n");
886 /* Turn off statistics updates while reading. */
887 outw(StatsDisable, ioaddr + EL3_CMD);
888 /* Switch to the stats window, and read everything. */
889 EL3WINDOW(6);
890 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
891 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
892 /* Multiple collisions. */ inb(ioaddr + 2);
893 dev->stats.collisions += inb(ioaddr + 3);
894 dev->stats.tx_window_errors += inb(ioaddr + 4);
895 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
896 dev->stats.tx_packets += inb(ioaddr + 6);
897 /* Rx packets */ inb(ioaddr + 7);
898 /* Tx deferrals */ inb(ioaddr + 8);
899 inw(ioaddr + 10); /* Total Rx and Tx octets. */
900 inw(ioaddr + 12);
901
902 /* Back to window 1, and turn statistics back on. */
903 EL3WINDOW(1);
904 outw(StatsEnable, ioaddr + EL3_CMD);
905}
906
907static int
908el3_rx(struct net_device *dev)
909{
910 int ioaddr = dev->base_addr;
911 short rx_status;
912
913 if (el3_debug > 5)
914 pr_debug(" In rx_packet(), status %4.4x, rx_status %4.4x.\n",
915 inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
916 while ((rx_status = inw(ioaddr + RX_STATUS)) > 0) {
917 if (rx_status & 0x4000) { /* Error, update stats. */
918 short error = rx_status & 0x3800;
919
920 outw(RxDiscard, ioaddr + EL3_CMD);
921 dev->stats.rx_errors++;
922 switch (error) {
923 case 0x0000: dev->stats.rx_over_errors++; break;
924 case 0x0800: dev->stats.rx_length_errors++; break;
925 case 0x1000: dev->stats.rx_frame_errors++; break;
926 case 0x1800: dev->stats.rx_length_errors++; break;
927 case 0x2000: dev->stats.rx_frame_errors++; break;
928 case 0x2800: dev->stats.rx_crc_errors++; break;
929 }
930 } else {
931 short pkt_len = rx_status & 0x7ff;
932 struct sk_buff *skb;
933
934 skb = netdev_alloc_skb(dev, pkt_len + 5);
935 if (el3_debug > 4)
936 pr_debug("Receiving packet size %d status %4.4x.\n",
937 pkt_len, rx_status);
938 if (skb != NULL) {
939 skb_reserve(skb, 2); /* Align IP on 16 byte */
940
941 /* 'skb->data' points to the start of sk_buff data area. */
942 insl(ioaddr + RX_FIFO, skb_put(skb,pkt_len),
943 (pkt_len + 3) >> 2);
944
945 outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */
946 skb->protocol = eth_type_trans(skb,dev);
947 netif_rx(skb);
948 dev->stats.rx_bytes += pkt_len;
949 dev->stats.rx_packets++;
950 continue;
951 }
952 outw(RxDiscard, ioaddr + EL3_CMD);
953 dev->stats.rx_dropped++;
954 if (el3_debug)
955 pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n",
956 dev->name, pkt_len);
957 }
958 inw(ioaddr + EL3_STATUS); /* Delay. */
959 while (inw(ioaddr + EL3_STATUS) & 0x1000)
960 pr_debug(" Waiting for 3c509 to discard packet, status %x.\n",
961 inw(ioaddr + EL3_STATUS) );
962 }
963
964 return 0;
965}
966
967/*
968 * Set or clear the multicast filter for this adaptor.
969 */
970static void
971set_multicast_list(struct net_device *dev)
972{
973 unsigned long flags;
974 struct el3_private *lp = netdev_priv(dev);
975 int ioaddr = dev->base_addr;
976 int mc_count = netdev_mc_count(dev);
977
978 if (el3_debug > 1) {
979 static int old;
980 if (old != mc_count) {
981 old = mc_count;
982 pr_debug("%s: Setting Rx mode to %d addresses.\n",
983 dev->name, mc_count);
984 }
985 }
986 spin_lock_irqsave(&lp->lock, flags);
987 if (dev->flags&IFF_PROMISC) {
988 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
989 ioaddr + EL3_CMD);
990 }
991 else if (mc_count || (dev->flags&IFF_ALLMULTI)) {
992 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast, ioaddr + EL3_CMD);
993 }
994 else
995 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
996 spin_unlock_irqrestore(&lp->lock, flags);
997}
998
999static int
1000el3_close(struct net_device *dev)
1001{
1002 int ioaddr = dev->base_addr;
1003 struct el3_private *lp = netdev_priv(dev);
1004
1005 if (el3_debug > 2)
1006 pr_debug("%s: Shutting down ethercard.\n", dev->name);
1007
1008 el3_down(dev);
1009
1010 free_irq(dev->irq, dev);
1011 /* Switching back to window 0 disables the IRQ. */
1012 EL3WINDOW(0);
1013 if (lp->type != EL3_EISA) {
1014 /* But we explicitly zero the IRQ line select anyway. Don't do
1015 * it on EISA cards, it prevents the module from getting an
1016 * IRQ after unload+reload... */
1017 outw(0x0f00, ioaddr + WN0_IRQ);
1018 }
1019
1020 return 0;
1021}
1022
1023static int
1024el3_link_ok(struct net_device *dev)
1025{
1026 int ioaddr = dev->base_addr;
1027 u16 tmp;
1028
1029 EL3WINDOW(4);
1030 tmp = inw(ioaddr + WN4_MEDIA);
1031 EL3WINDOW(1);
1032 return tmp & (1<<11);
1033}
1034
1035static void
1036el3_netdev_get_ecmd(struct net_device *dev, struct ethtool_link_ksettings *cmd)
1037{
1038 u16 tmp;
1039 int ioaddr = dev->base_addr;
1040 u32 supported;
1041
1042 EL3WINDOW(0);
1043 /* obtain current transceiver via WN4_MEDIA? */
1044 tmp = inw(ioaddr + WN0_ADDR_CONF);
1045 switch (tmp >> 14) {
1046 case 0:
1047 cmd->base.port = PORT_TP;
1048 break;
1049 case 1:
1050 cmd->base.port = PORT_AUI;
1051 break;
1052 case 3:
1053 cmd->base.port = PORT_BNC;
1054 break;
1055 default:
1056 break;
1057 }
1058
1059 cmd->base.duplex = DUPLEX_HALF;
1060 supported = 0;
1061 tmp = inw(ioaddr + WN0_CONF_CTRL);
1062 if (tmp & (1<<13))
1063 supported |= SUPPORTED_AUI;
1064 if (tmp & (1<<12))
1065 supported |= SUPPORTED_BNC;
1066 if (tmp & (1<<9)) {
1067 supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half |
1068 SUPPORTED_10baseT_Full; /* hmm... */
1069 EL3WINDOW(4);
1070 tmp = inw(ioaddr + WN4_NETDIAG);
1071 if (tmp & FD_ENABLE)
1072 cmd->base.duplex = DUPLEX_FULL;
1073 }
1074
1075 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
1076 supported);
1077 cmd->base.speed = SPEED_10;
1078 EL3WINDOW(1);
1079}
1080
1081static int
1082el3_netdev_set_ecmd(struct net_device *dev,
1083 const struct ethtool_link_ksettings *cmd)
1084{
1085 u16 tmp;
1086 int ioaddr = dev->base_addr;
1087
1088 if (cmd->base.speed != SPEED_10)
1089 return -EINVAL;
1090 if ((cmd->base.duplex != DUPLEX_HALF) &&
1091 (cmd->base.duplex != DUPLEX_FULL))
1092 return -EINVAL;
1093
1094 /* change XCVR type */
1095 EL3WINDOW(0);
1096 tmp = inw(ioaddr + WN0_ADDR_CONF);
1097 switch (cmd->base.port) {
1098 case PORT_TP:
1099 tmp &= ~(3<<14);
1100 dev->if_port = 0;
1101 break;
1102 case PORT_AUI:
1103 tmp |= (1<<14);
1104 dev->if_port = 1;
1105 break;
1106 case PORT_BNC:
1107 tmp |= (3<<14);
1108 dev->if_port = 3;
1109 break;
1110 default:
1111 return -EINVAL;
1112 }
1113
1114 outw(tmp, ioaddr + WN0_ADDR_CONF);
1115 if (dev->if_port == 3) {
1116 /* fire up the DC-DC convertor if BNC gets enabled */
1117 tmp = inw(ioaddr + WN0_ADDR_CONF);
1118 if (tmp & (3 << 14)) {
1119 outw(StartCoax, ioaddr + EL3_CMD);
1120 udelay(800);
1121 } else
1122 return -EIO;
1123 }
1124
1125 EL3WINDOW(4);
1126 tmp = inw(ioaddr + WN4_NETDIAG);
1127 if (cmd->base.duplex == DUPLEX_FULL)
1128 tmp |= FD_ENABLE;
1129 else
1130 tmp &= ~FD_ENABLE;
1131 outw(tmp, ioaddr + WN4_NETDIAG);
1132 EL3WINDOW(1);
1133
1134 return 0;
1135}
1136
1137static void el3_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1138{
1139 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
1140}
1141
1142static int el3_get_link_ksettings(struct net_device *dev,
1143 struct ethtool_link_ksettings *cmd)
1144{
1145 struct el3_private *lp = netdev_priv(dev);
1146
1147 spin_lock_irq(&lp->lock);
1148 el3_netdev_get_ecmd(dev, cmd);
1149 spin_unlock_irq(&lp->lock);
1150 return 0;
1151}
1152
1153static int el3_set_link_ksettings(struct net_device *dev,
1154 const struct ethtool_link_ksettings *cmd)
1155{
1156 struct el3_private *lp = netdev_priv(dev);
1157 int ret;
1158
1159 spin_lock_irq(&lp->lock);
1160 ret = el3_netdev_set_ecmd(dev, cmd);
1161 spin_unlock_irq(&lp->lock);
1162 return ret;
1163}
1164
1165static u32 el3_get_link(struct net_device *dev)
1166{
1167 struct el3_private *lp = netdev_priv(dev);
1168 u32 ret;
1169
1170 spin_lock_irq(&lp->lock);
1171 ret = el3_link_ok(dev);
1172 spin_unlock_irq(&lp->lock);
1173 return ret;
1174}
1175
1176static u32 el3_get_msglevel(struct net_device *dev)
1177{
1178 return el3_debug;
1179}
1180
1181static void el3_set_msglevel(struct net_device *dev, u32 v)
1182{
1183 el3_debug = v;
1184}
1185
1186static const struct ethtool_ops ethtool_ops = {
1187 .get_drvinfo = el3_get_drvinfo,
1188 .get_link = el3_get_link,
1189 .get_msglevel = el3_get_msglevel,
1190 .set_msglevel = el3_set_msglevel,
1191 .get_link_ksettings = el3_get_link_ksettings,
1192 .set_link_ksettings = el3_set_link_ksettings,
1193};
1194
1195static void
1196el3_down(struct net_device *dev)
1197{
1198 int ioaddr = dev->base_addr;
1199
1200 netif_stop_queue(dev);
1201
1202 /* Turn off statistics ASAP. We update lp->stats below. */
1203 outw(StatsDisable, ioaddr + EL3_CMD);
1204
1205 /* Disable the receiver and transmitter. */
1206 outw(RxDisable, ioaddr + EL3_CMD);
1207 outw(TxDisable, ioaddr + EL3_CMD);
1208
1209 if (dev->if_port == 3)
1210 /* Turn off thinnet power. Green! */
1211 outw(StopCoax, ioaddr + EL3_CMD);
1212 else if (dev->if_port == 0) {
1213 /* Disable link beat and jabber, if_port may change here next open(). */
1214 EL3WINDOW(4);
1215 outw(inw(ioaddr + WN4_MEDIA) & ~MEDIA_TP, ioaddr + WN4_MEDIA);
1216 }
1217
1218 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1219
1220 update_stats(dev);
1221}
1222
1223static void
1224el3_up(struct net_device *dev)
1225{
1226 int i, sw_info, net_diag;
1227 int ioaddr = dev->base_addr;
1228
1229 /* Activating the board required and does no harm otherwise */
1230 outw(0x0001, ioaddr + 4);
1231
1232 /* Set the IRQ line. */
1233 outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ);
1234
1235 /* Set the station address in window 2 each time opened. */
1236 EL3WINDOW(2);
1237
1238 for (i = 0; i < 6; i++)
1239 outb(dev->dev_addr[i], ioaddr + i);
1240
1241 if ((dev->if_port & 0x03) == 3) /* BNC interface */
1242 /* Start the thinnet transceiver. We should really wait 50ms...*/
1243 outw(StartCoax, ioaddr + EL3_CMD);
1244 else if ((dev->if_port & 0x03) == 0) { /* 10baseT interface */
1245 /* Combine secondary sw_info word (the adapter level) and primary
1246 sw_info word (duplex setting plus other useless bits) */
1247 EL3WINDOW(0);
1248 sw_info = (read_eeprom(ioaddr, 0x14) & 0x400f) |
1249 (read_eeprom(ioaddr, 0x0d) & 0xBff0);
1250
1251 EL3WINDOW(4);
1252 net_diag = inw(ioaddr + WN4_NETDIAG);
1253 net_diag = (net_diag | FD_ENABLE); /* temporarily assume full-duplex will be set */
1254 pr_info("%s: ", dev->name);
1255 switch (dev->if_port & 0x0c) {
1256 case 12:
1257 /* force full-duplex mode if 3c5x9b */
1258 if (sw_info & 0x000f) {
1259 pr_cont("Forcing 3c5x9b full-duplex mode");
1260 break;
1261 }
1262 fallthrough;
1263 case 8:
1264 /* set full-duplex mode based on eeprom config setting */
1265 if ((sw_info & 0x000f) && (sw_info & 0x8000)) {
1266 pr_cont("Setting 3c5x9b full-duplex mode (from EEPROM configuration bit)");
1267 break;
1268 }
1269 fallthrough;
1270 default:
1271 /* xcvr=(0 || 4) OR user has an old 3c5x9 non "B" model */
1272 pr_cont("Setting 3c5x9/3c5x9B half-duplex mode");
1273 net_diag = (net_diag & ~FD_ENABLE); /* disable full duplex */
1274 }
1275
1276 outw(net_diag, ioaddr + WN4_NETDIAG);
1277 pr_cont(" if_port: %d, sw_info: %4.4x\n", dev->if_port, sw_info);
1278 if (el3_debug > 3)
1279 pr_debug("%s: 3c5x9 net diag word is now: %4.4x.\n", dev->name, net_diag);
1280 /* Enable link beat and jabber check. */
1281 outw(inw(ioaddr + WN4_MEDIA) | MEDIA_TP, ioaddr + WN4_MEDIA);
1282 }
1283
1284 /* Switch to the stats window, and clear all stats by reading. */
1285 outw(StatsDisable, ioaddr + EL3_CMD);
1286 EL3WINDOW(6);
1287 for (i = 0; i < 9; i++)
1288 inb(ioaddr + i);
1289 inw(ioaddr + 10);
1290 inw(ioaddr + 12);
1291
1292 /* Switch to register set 1 for normal use. */
1293 EL3WINDOW(1);
1294
1295 /* Accept b-case and phys addr only. */
1296 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1297 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
1298
1299 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
1300 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
1301 /* Allow status bits to be seen. */
1302 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
1303 /* Ack all pending events, and set active indicator mask. */
1304 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
1305 ioaddr + EL3_CMD);
1306 outw(SetIntrEnb | IntLatch|TxAvailable|TxComplete|RxComplete|StatsFull,
1307 ioaddr + EL3_CMD);
1308
1309 netif_start_queue(dev);
1310}
1311
1312/* Power Management support functions */
1313#ifdef CONFIG_PM
1314
1315static int
1316el3_suspend(struct device *pdev, pm_message_t state)
1317{
1318 unsigned long flags;
1319 struct net_device *dev;
1320 struct el3_private *lp;
1321 int ioaddr;
1322
1323 dev = dev_get_drvdata(pdev);
1324 lp = netdev_priv(dev);
1325 ioaddr = dev->base_addr;
1326
1327 spin_lock_irqsave(&lp->lock, flags);
1328
1329 if (netif_running(dev))
1330 netif_device_detach(dev);
1331
1332 el3_down(dev);
1333 outw(PowerDown, ioaddr + EL3_CMD);
1334
1335 spin_unlock_irqrestore(&lp->lock, flags);
1336 return 0;
1337}
1338
1339static int
1340el3_resume(struct device *pdev)
1341{
1342 unsigned long flags;
1343 struct net_device *dev;
1344 struct el3_private *lp;
1345 int ioaddr;
1346
1347 dev = dev_get_drvdata(pdev);
1348 lp = netdev_priv(dev);
1349 ioaddr = dev->base_addr;
1350
1351 spin_lock_irqsave(&lp->lock, flags);
1352
1353 outw(PowerUp, ioaddr + EL3_CMD);
1354 EL3WINDOW(0);
1355 el3_up(dev);
1356
1357 if (netif_running(dev))
1358 netif_device_attach(dev);
1359
1360 spin_unlock_irqrestore(&lp->lock, flags);
1361 return 0;
1362}
1363
1364#endif /* CONFIG_PM */
1365
1366module_param(debug,int, 0);
1367module_param_hw_array(irq, int, irq, NULL, 0);
1368module_param(max_interrupt_work, int, 0);
1369MODULE_PARM_DESC(debug, "debug level (0-6)");
1370MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
1371MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt");
1372#ifdef CONFIG_PNP
1373module_param(nopnp, int, 0);
1374MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)");
1375#endif /* CONFIG_PNP */
1376MODULE_DESCRIPTION("3Com Etherlink III (3c509, 3c509B, 3c529, 3c579) ethernet driver");
1377MODULE_LICENSE("GPL");
1378
1379static int __init el3_init_module(void)
1380{
1381 int ret = 0;
1382
1383 if (debug >= 0)
1384 el3_debug = debug;
1385
1386#ifdef CONFIG_PNP
1387 if (!nopnp) {
1388 ret = pnp_register_driver(&el3_pnp_driver);
1389 if (!ret)
1390 pnp_registered = 1;
1391 }
1392#endif
1393 /* Select an open I/O location at 0x1*0 to do ISA contention select. */
1394 /* Start with 0x110 to avoid some sound cards.*/
1395 for (id_port = 0x110 ; id_port < 0x200; id_port += 0x10) {
1396 if (!request_region(id_port, 1, "3c509-control"))
1397 continue;
1398 outb(0x00, id_port);
1399 outb(0xff, id_port);
1400 if (inb(id_port) & 0x01)
1401 break;
1402 else
1403 release_region(id_port, 1);
1404 }
1405 if (id_port >= 0x200) {
1406 id_port = 0;
1407 pr_err("No I/O port available for 3c509 activation.\n");
1408 } else {
1409 ret = isa_register_driver(&el3_isa_driver, EL3_MAX_CARDS);
1410 if (!ret)
1411 isa_registered = 1;
1412 }
1413#ifdef CONFIG_EISA
1414 ret = eisa_driver_register(&el3_eisa_driver);
1415 if (!ret)
1416 eisa_registered = 1;
1417#endif
1418
1419#ifdef CONFIG_PNP
1420 if (pnp_registered)
1421 ret = 0;
1422#endif
1423 if (isa_registered)
1424 ret = 0;
1425#ifdef CONFIG_EISA
1426 if (eisa_registered)
1427 ret = 0;
1428#endif
1429 return ret;
1430}
1431
1432static void __exit el3_cleanup_module(void)
1433{
1434#ifdef CONFIG_PNP
1435 if (pnp_registered)
1436 pnp_unregister_driver(&el3_pnp_driver);
1437#endif
1438 if (isa_registered)
1439 isa_unregister_driver(&el3_isa_driver);
1440 if (id_port)
1441 release_region(id_port, 1);
1442#ifdef CONFIG_EISA
1443 if (eisa_registered)
1444 eisa_driver_unregister(&el3_eisa_driver);
1445#endif
1446}
1447
1448module_init (el3_init_module);
1449module_exit (el3_cleanup_module);