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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 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);