jbd2: Annotate transaction start also for jbd2_journal_restart()
[linux/fpc-iii.git] / drivers / net / 3c509.c
blob3b00a4e927aa115187fa0b3f6dea35f4f406e7c5
1 /* 3c509.c: A 3c509 EtherLink3 ethernet driver for linux. */
2 /*
3 Written 1993-2000 by Donald Becker.
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.
11 This driver is for the 3Com EtherLinkIII series.
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
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.
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.
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
62 #define DRV_NAME "3c509"
63 #define DRV_VERSION "1.20"
64 #define DRV_RELDATE "04Feb2008"
66 /* A few values that may be tweaked. */
68 /* Time in jiffies before concluding the transmitter is hung. */
69 #define TX_TIMEOUT (400*HZ/1000)
71 #include <linux/module.h>
72 #include <linux/mca.h>
73 #include <linux/isa.h>
74 #include <linux/pnp.h>
75 #include <linux/string.h>
76 #include <linux/interrupt.h>
77 #include <linux/errno.h>
78 #include <linux/in.h>
79 #include <linux/slab.h>
80 #include <linux/ioport.h>
81 #include <linux/init.h>
82 #include <linux/netdevice.h>
83 #include <linux/etherdevice.h>
84 #include <linux/pm.h>
85 #include <linux/skbuff.h>
86 #include <linux/delay.h> /* for udelay() */
87 #include <linux/spinlock.h>
88 #include <linux/ethtool.h>
89 #include <linux/device.h>
90 #include <linux/eisa.h>
91 #include <linux/bitops.h>
93 #include <asm/uaccess.h>
94 #include <asm/io.h>
95 #include <asm/irq.h>
97 static char version[] __devinitdata = DRV_NAME ".c:" DRV_VERSION " " DRV_RELDATE " becker@scyld.com\n";
99 #ifdef EL3_DEBUG
100 static int el3_debug = EL3_DEBUG;
101 #else
102 static int el3_debug = 2;
103 #endif
105 /* Used to do a global count of all the cards in the system. Must be
106 * a global variable so that the mca/eisa probe routines can increment
107 * it */
108 static int el3_cards = 0;
109 #define EL3_MAX_CARDS 8
111 /* To minimize the size of the driver source I only define operating
112 constants if they are used several times. You'll need the manual
113 anyway if you want to understand driver details. */
114 /* Offsets from base I/O address. */
115 #define EL3_DATA 0x00
116 #define EL3_CMD 0x0e
117 #define EL3_STATUS 0x0e
118 #define EEPROM_READ 0x80
120 #define EL3_IO_EXTENT 16
122 #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
125 /* The top five bits written to EL3_CMD are a command, the lower
126 11 bits are the parameter, if applicable. */
127 enum c509cmd {
128 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
129 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
130 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
131 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
132 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
133 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
134 StatsDisable = 22<<11, StopCoax = 23<<11, PowerUp = 27<<11,
135 PowerDown = 28<<11, PowerAuto = 29<<11};
137 enum c509status {
138 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
139 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
140 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000, };
142 /* The SetRxFilter command accepts the following classes: */
143 enum RxFilter {
144 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 };
146 /* Register window 1 offsets, the window used in normal operation. */
147 #define TX_FIFO 0x00
148 #define RX_FIFO 0x00
149 #define RX_STATUS 0x08
150 #define TX_STATUS 0x0B
151 #define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
153 #define WN0_CONF_CTRL 0x04 /* Window 0: Configuration control register */
154 #define WN0_ADDR_CONF 0x06 /* Window 0: Address configuration register */
155 #define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
156 #define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
157 #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
158 #define WN4_NETDIAG 0x06 /* Window 4: Net diagnostic */
159 #define FD_ENABLE 0x8000 /* Enable full-duplex ("external loopback") */
162 * Must be a power of two (we use a binary and in the
163 * circular queue)
165 #define SKB_QUEUE_SIZE 64
167 enum el3_cardtype { EL3_ISA, EL3_PNP, EL3_MCA, EL3_EISA };
169 struct el3_private {
170 spinlock_t lock;
171 /* skb send-queue */
172 int head, size;
173 struct sk_buff *queue[SKB_QUEUE_SIZE];
174 enum el3_cardtype type;
176 static int id_port;
177 static int current_tag;
178 static struct net_device *el3_devs[EL3_MAX_CARDS];
180 /* Parameters that may be passed into the module. */
181 static int debug = -1;
182 static int irq[] = {-1, -1, -1, -1, -1, -1, -1, -1};
183 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
184 static int max_interrupt_work = 10;
185 #ifdef CONFIG_PNP
186 static int nopnp;
187 #endif
189 static int __devinit el3_common_init(struct net_device *dev);
190 static void el3_common_remove(struct net_device *dev);
191 static ushort id_read_eeprom(int index);
192 static ushort read_eeprom(int ioaddr, int index);
193 static int el3_open(struct net_device *dev);
194 static netdev_tx_t el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
195 static irqreturn_t el3_interrupt(int irq, void *dev_id);
196 static void update_stats(struct net_device *dev);
197 static struct net_device_stats *el3_get_stats(struct net_device *dev);
198 static int el3_rx(struct net_device *dev);
199 static int el3_close(struct net_device *dev);
200 static void set_multicast_list(struct net_device *dev);
201 static void el3_tx_timeout (struct net_device *dev);
202 static void el3_down(struct net_device *dev);
203 static void el3_up(struct net_device *dev);
204 static const struct ethtool_ops ethtool_ops;
205 #ifdef CONFIG_PM
206 static int el3_suspend(struct device *, pm_message_t);
207 static int el3_resume(struct device *);
208 #else
209 #define el3_suspend NULL
210 #define el3_resume NULL
211 #endif
214 /* generic device remove for all device types */
215 static int el3_device_remove (struct device *device);
216 #ifdef CONFIG_NET_POLL_CONTROLLER
217 static void el3_poll_controller(struct net_device *dev);
218 #endif
220 /* Return 0 on success, 1 on error, 2 when found already detected PnP card */
221 static int el3_isa_id_sequence(__be16 *phys_addr)
223 short lrs_state = 0xff;
224 int i;
226 /* ISA boards are detected by sending the ID sequence to the
227 ID_PORT. We find cards past the first by setting the 'current_tag'
228 on cards as they are found. Cards with their tag set will not
229 respond to subsequent ID sequences. */
231 outb(0x00, id_port);
232 outb(0x00, id_port);
233 for (i = 0; i < 255; i++) {
234 outb(lrs_state, id_port);
235 lrs_state <<= 1;
236 lrs_state = lrs_state & 0x100 ? lrs_state ^ 0xcf : lrs_state;
238 /* For the first probe, clear all board's tag registers. */
239 if (current_tag == 0)
240 outb(0xd0, id_port);
241 else /* Otherwise kill off already-found boards. */
242 outb(0xd8, id_port);
243 if (id_read_eeprom(7) != 0x6d50)
244 return 1;
245 /* Read in EEPROM data, which does contention-select.
246 Only the lowest address board will stay "on-line".
247 3Com got the byte order backwards. */
248 for (i = 0; i < 3; i++)
249 phys_addr[i] = htons(id_read_eeprom(i));
250 #ifdef CONFIG_PNP
251 if (!nopnp) {
252 /* The ISA PnP 3c509 cards respond to the ID sequence too.
253 This check is needed in order not to register them twice. */
254 for (i = 0; i < el3_cards; i++) {
255 struct el3_private *lp = netdev_priv(el3_devs[i]);
256 if (lp->type == EL3_PNP
257 && !memcmp(phys_addr, el3_devs[i]->dev_addr,
258 ETH_ALEN)) {
259 if (el3_debug > 3)
260 pr_debug("3c509 with address %02x %02x %02x %02x %02x %02x was found by ISAPnP\n",
261 phys_addr[0] & 0xff, phys_addr[0] >> 8,
262 phys_addr[1] & 0xff, phys_addr[1] >> 8,
263 phys_addr[2] & 0xff, phys_addr[2] >> 8);
264 /* Set the adaptor tag so that the next card can be found. */
265 outb(0xd0 + ++current_tag, id_port);
266 return 2;
270 #endif /* CONFIG_PNP */
271 return 0;
275 static void __devinit el3_dev_fill(struct net_device *dev, __be16 *phys_addr,
276 int ioaddr, int irq, int if_port,
277 enum el3_cardtype type)
279 struct el3_private *lp = netdev_priv(dev);
281 memcpy(dev->dev_addr, phys_addr, ETH_ALEN);
282 dev->base_addr = ioaddr;
283 dev->irq = irq;
284 dev->if_port = if_port;
285 lp->type = type;
288 static int __devinit el3_isa_match(struct device *pdev,
289 unsigned int ndev)
291 struct net_device *dev;
292 int ioaddr, isa_irq, if_port, err;
293 unsigned int iobase;
294 __be16 phys_addr[3];
296 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
297 ; /* Skip to next card when PnP card found */
298 if (err == 1)
299 return 0;
301 iobase = id_read_eeprom(8);
302 if_port = iobase >> 14;
303 ioaddr = 0x200 + ((iobase & 0x1f) << 4);
304 if (irq[el3_cards] > 1 && irq[el3_cards] < 16)
305 isa_irq = irq[el3_cards];
306 else
307 isa_irq = id_read_eeprom(9) >> 12;
309 dev = alloc_etherdev(sizeof(struct el3_private));
310 if (!dev)
311 return -ENOMEM;
313 netdev_boot_setup_check(dev);
315 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-isa")) {
316 free_netdev(dev);
317 return 0;
320 /* Set the adaptor tag so that the next card can be found. */
321 outb(0xd0 + ++current_tag, id_port);
323 /* Activate the adaptor at the EEPROM location. */
324 outb((ioaddr >> 4) | 0xe0, id_port);
326 EL3WINDOW(0);
327 if (inw(ioaddr) != 0x6d50) {
328 free_netdev(dev);
329 return 0;
332 /* Free the interrupt so that some other card can use it. */
333 outw(0x0f00, ioaddr + WN0_IRQ);
335 el3_dev_fill(dev, phys_addr, ioaddr, isa_irq, if_port, EL3_ISA);
336 dev_set_drvdata(pdev, dev);
337 if (el3_common_init(dev)) {
338 free_netdev(dev);
339 return 0;
342 el3_devs[el3_cards++] = dev;
343 return 1;
346 static int __devexit el3_isa_remove(struct device *pdev,
347 unsigned int ndev)
349 el3_device_remove(pdev);
350 dev_set_drvdata(pdev, NULL);
351 return 0;
354 #ifdef CONFIG_PM
355 static int el3_isa_suspend(struct device *dev, unsigned int n,
356 pm_message_t state)
358 current_tag = 0;
359 return el3_suspend(dev, state);
362 static int el3_isa_resume(struct device *dev, unsigned int n)
364 struct net_device *ndev = dev_get_drvdata(dev);
365 int ioaddr = ndev->base_addr, err;
366 __be16 phys_addr[3];
368 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
369 ; /* Skip to next card when PnP card found */
370 if (err == 1)
371 return 0;
372 /* Set the adaptor tag so that the next card can be found. */
373 outb(0xd0 + ++current_tag, id_port);
374 /* Enable the card */
375 outb((ioaddr >> 4) | 0xe0, id_port);
376 EL3WINDOW(0);
377 if (inw(ioaddr) != 0x6d50)
378 return 1;
379 /* Free the interrupt so that some other card can use it. */
380 outw(0x0f00, ioaddr + WN0_IRQ);
381 return el3_resume(dev);
383 #endif
385 static struct isa_driver el3_isa_driver = {
386 .match = el3_isa_match,
387 .remove = __devexit_p(el3_isa_remove),
388 #ifdef CONFIG_PM
389 .suspend = el3_isa_suspend,
390 .resume = el3_isa_resume,
391 #endif
392 .driver = {
393 .name = "3c509"
396 static int isa_registered;
398 #ifdef CONFIG_PNP
399 static struct pnp_device_id el3_pnp_ids[] = {
400 { .id = "TCM5090" }, /* 3Com Etherlink III (TP) */
401 { .id = "TCM5091" }, /* 3Com Etherlink III */
402 { .id = "TCM5094" }, /* 3Com Etherlink III (combo) */
403 { .id = "TCM5095" }, /* 3Com Etherlink III (TPO) */
404 { .id = "TCM5098" }, /* 3Com Etherlink III (TPC) */
405 { .id = "PNP80f7" }, /* 3Com Etherlink III compatible */
406 { .id = "PNP80f8" }, /* 3Com Etherlink III compatible */
407 { .id = "" }
409 MODULE_DEVICE_TABLE(pnp, el3_pnp_ids);
411 static int __devinit el3_pnp_probe(struct pnp_dev *pdev,
412 const struct pnp_device_id *id)
414 short i;
415 int ioaddr, irq, if_port;
416 __be16 phys_addr[3];
417 struct net_device *dev = NULL;
418 int err;
420 ioaddr = pnp_port_start(pdev, 0);
421 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-pnp"))
422 return -EBUSY;
423 irq = pnp_irq(pdev, 0);
424 EL3WINDOW(0);
425 for (i = 0; i < 3; i++)
426 phys_addr[i] = htons(read_eeprom(ioaddr, i));
427 if_port = read_eeprom(ioaddr, 8) >> 14;
428 dev = alloc_etherdev(sizeof(struct el3_private));
429 if (!dev) {
430 release_region(ioaddr, EL3_IO_EXTENT);
431 return -ENOMEM;
433 SET_NETDEV_DEV(dev, &pdev->dev);
434 netdev_boot_setup_check(dev);
436 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_PNP);
437 pnp_set_drvdata(pdev, dev);
438 err = el3_common_init(dev);
440 if (err) {
441 pnp_set_drvdata(pdev, NULL);
442 free_netdev(dev);
443 return err;
446 el3_devs[el3_cards++] = dev;
447 return 0;
450 static void __devexit el3_pnp_remove(struct pnp_dev *pdev)
452 el3_common_remove(pnp_get_drvdata(pdev));
453 pnp_set_drvdata(pdev, NULL);
456 #ifdef CONFIG_PM
457 static int el3_pnp_suspend(struct pnp_dev *pdev, pm_message_t state)
459 return el3_suspend(&pdev->dev, state);
462 static int el3_pnp_resume(struct pnp_dev *pdev)
464 return el3_resume(&pdev->dev);
466 #endif
468 static struct pnp_driver el3_pnp_driver = {
469 .name = "3c509",
470 .id_table = el3_pnp_ids,
471 .probe = el3_pnp_probe,
472 .remove = __devexit_p(el3_pnp_remove),
473 #ifdef CONFIG_PM
474 .suspend = el3_pnp_suspend,
475 .resume = el3_pnp_resume,
476 #endif
478 static int pnp_registered;
479 #endif /* CONFIG_PNP */
481 #ifdef CONFIG_EISA
482 static struct eisa_device_id el3_eisa_ids[] = {
483 { "TCM5090" },
484 { "TCM5091" },
485 { "TCM5092" },
486 { "TCM5093" },
487 { "TCM5094" },
488 { "TCM5095" },
489 { "TCM5098" },
490 { "" }
492 MODULE_DEVICE_TABLE(eisa, el3_eisa_ids);
494 static int el3_eisa_probe (struct device *device);
496 static struct eisa_driver el3_eisa_driver = {
497 .id_table = el3_eisa_ids,
498 .driver = {
499 .name = "3c579",
500 .probe = el3_eisa_probe,
501 .remove = __devexit_p (el3_device_remove),
502 .suspend = el3_suspend,
503 .resume = el3_resume,
506 static int eisa_registered;
507 #endif
509 #ifdef CONFIG_MCA
510 static int el3_mca_probe(struct device *dev);
512 static short el3_mca_adapter_ids[] __initdata = {
513 0x627c,
514 0x627d,
515 0x62db,
516 0x62f6,
517 0x62f7,
518 0x0000
521 static char *el3_mca_adapter_names[] __initdata = {
522 "3Com 3c529 EtherLink III (10base2)",
523 "3Com 3c529 EtherLink III (10baseT)",
524 "3Com 3c529 EtherLink III (test mode)",
525 "3Com 3c529 EtherLink III (TP or coax)",
526 "3Com 3c529 EtherLink III (TP)",
527 NULL
530 static struct mca_driver el3_mca_driver = {
531 .id_table = el3_mca_adapter_ids,
532 .driver = {
533 .name = "3c529",
534 .bus = &mca_bus_type,
535 .probe = el3_mca_probe,
536 .remove = __devexit_p(el3_device_remove),
537 .suspend = el3_suspend,
538 .resume = el3_resume,
541 static int mca_registered;
542 #endif /* CONFIG_MCA */
544 static const struct net_device_ops netdev_ops = {
545 .ndo_open = el3_open,
546 .ndo_stop = el3_close,
547 .ndo_start_xmit = el3_start_xmit,
548 .ndo_get_stats = el3_get_stats,
549 .ndo_set_multicast_list = set_multicast_list,
550 .ndo_tx_timeout = el3_tx_timeout,
551 .ndo_change_mtu = eth_change_mtu,
552 .ndo_set_mac_address = eth_mac_addr,
553 .ndo_validate_addr = eth_validate_addr,
554 #ifdef CONFIG_NET_POLL_CONTROLLER
555 .ndo_poll_controller = el3_poll_controller,
556 #endif
559 static int __devinit el3_common_init(struct net_device *dev)
561 struct el3_private *lp = netdev_priv(dev);
562 int err;
563 const char *if_names[] = {"10baseT", "AUI", "undefined", "BNC"};
565 spin_lock_init(&lp->lock);
567 if (dev->mem_start & 0x05) { /* xcvr codes 1/3/4/12 */
568 dev->if_port = (dev->mem_start & 0x0f);
569 } else { /* xcvr codes 0/8 */
570 /* use eeprom value, but save user's full-duplex selection */
571 dev->if_port |= (dev->mem_start & 0x08);
574 /* The EL3-specific entries in the device structure. */
575 dev->netdev_ops = &netdev_ops;
576 dev->watchdog_timeo = TX_TIMEOUT;
577 SET_ETHTOOL_OPS(dev, &ethtool_ops);
579 err = register_netdev(dev);
580 if (err) {
581 pr_err("Failed to register 3c5x9 at %#3.3lx, IRQ %d.\n",
582 dev->base_addr, dev->irq);
583 release_region(dev->base_addr, EL3_IO_EXTENT);
584 return err;
587 pr_info("%s: 3c5x9 found at %#3.3lx, %s port, address %pM, IRQ %d.\n",
588 dev->name, dev->base_addr, if_names[(dev->if_port & 0x03)],
589 dev->dev_addr, dev->irq);
591 if (el3_debug > 0)
592 pr_info("%s", version);
593 return 0;
597 static void el3_common_remove (struct net_device *dev)
599 unregister_netdev (dev);
600 release_region(dev->base_addr, EL3_IO_EXTENT);
601 free_netdev (dev);
604 #ifdef CONFIG_MCA
605 static int __init el3_mca_probe(struct device *device)
607 /* Based on Erik Nygren's (nygren@mit.edu) 3c529 patch,
608 * heavily modified by Chris Beauregard
609 * (cpbeaure@csclub.uwaterloo.ca) to support standard MCA
610 * probing.
612 * redone for multi-card detection by ZP Gu (zpg@castle.net)
613 * now works as a module */
615 short i;
616 int ioaddr, irq, if_port;
617 __be16 phys_addr[3];
618 struct net_device *dev = NULL;
619 u_char pos4, pos5;
620 struct mca_device *mdev = to_mca_device(device);
621 int slot = mdev->slot;
622 int err;
624 pos4 = mca_device_read_stored_pos(mdev, 4);
625 pos5 = mca_device_read_stored_pos(mdev, 5);
627 ioaddr = ((short)((pos4&0xfc)|0x02)) << 8;
628 irq = pos5 & 0x0f;
631 pr_info("3c529: found %s at slot %d\n",
632 el3_mca_adapter_names[mdev->index], slot + 1);
634 /* claim the slot */
635 strncpy(mdev->name, el3_mca_adapter_names[mdev->index],
636 sizeof(mdev->name));
637 mca_device_set_claim(mdev, 1);
639 if_port = pos4 & 0x03;
641 irq = mca_device_transform_irq(mdev, irq);
642 ioaddr = mca_device_transform_ioport(mdev, ioaddr);
643 if (el3_debug > 2) {
644 pr_debug("3c529: irq %d ioaddr 0x%x ifport %d\n", irq, ioaddr, if_port);
646 EL3WINDOW(0);
647 for (i = 0; i < 3; i++)
648 phys_addr[i] = htons(read_eeprom(ioaddr, i));
650 dev = alloc_etherdev(sizeof (struct el3_private));
651 if (dev == NULL) {
652 release_region(ioaddr, EL3_IO_EXTENT);
653 return -ENOMEM;
656 netdev_boot_setup_check(dev);
658 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_MCA);
659 dev_set_drvdata(device, dev);
660 err = el3_common_init(dev);
662 if (err) {
663 dev_set_drvdata(device, NULL);
664 free_netdev(dev);
665 return -ENOMEM;
668 el3_devs[el3_cards++] = dev;
669 return 0;
672 #endif /* CONFIG_MCA */
674 #ifdef CONFIG_EISA
675 static int __init el3_eisa_probe (struct device *device)
677 short i;
678 int ioaddr, irq, if_port;
679 __be16 phys_addr[3];
680 struct net_device *dev = NULL;
681 struct eisa_device *edev;
682 int err;
684 /* Yeepee, The driver framework is calling us ! */
685 edev = to_eisa_device (device);
686 ioaddr = edev->base_addr;
688 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c579-eisa"))
689 return -EBUSY;
691 /* Change the register set to the configuration window 0. */
692 outw(SelectWindow | 0, ioaddr + 0xC80 + EL3_CMD);
694 irq = inw(ioaddr + WN0_IRQ) >> 12;
695 if_port = inw(ioaddr + 6)>>14;
696 for (i = 0; i < 3; i++)
697 phys_addr[i] = htons(read_eeprom(ioaddr, i));
699 /* Restore the "Product ID" to the EEPROM read register. */
700 read_eeprom(ioaddr, 3);
702 dev = alloc_etherdev(sizeof (struct el3_private));
703 if (dev == NULL) {
704 release_region(ioaddr, EL3_IO_EXTENT);
705 return -ENOMEM;
708 netdev_boot_setup_check(dev);
710 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_EISA);
711 eisa_set_drvdata (edev, dev);
712 err = el3_common_init(dev);
714 if (err) {
715 eisa_set_drvdata (edev, NULL);
716 free_netdev(dev);
717 return err;
720 el3_devs[el3_cards++] = dev;
721 return 0;
723 #endif
725 /* This remove works for all device types.
727 * The net dev must be stored in the driver data field */
728 static int __devexit el3_device_remove (struct device *device)
730 struct net_device *dev;
732 dev = dev_get_drvdata(device);
734 el3_common_remove (dev);
735 return 0;
738 /* Read a word from the EEPROM using the regular EEPROM access register.
739 Assume that we are in register window zero.
741 static ushort read_eeprom(int ioaddr, int index)
743 outw(EEPROM_READ + index, ioaddr + 10);
744 /* Pause for at least 162 us. for the read to take place.
745 Some chips seem to require much longer */
746 mdelay(2);
747 return inw(ioaddr + 12);
750 /* Read a word from the EEPROM when in the ISA ID probe state. */
751 static ushort id_read_eeprom(int index)
753 int bit, word = 0;
755 /* Issue read command, and pause for at least 162 us. for it to complete.
756 Assume extra-fast 16Mhz bus. */
757 outb(EEPROM_READ + index, id_port);
759 /* Pause for at least 162 us. for the read to take place. */
760 /* Some chips seem to require much longer */
761 mdelay(4);
763 for (bit = 15; bit >= 0; bit--)
764 word = (word << 1) + (inb(id_port) & 0x01);
766 if (el3_debug > 3)
767 pr_debug(" 3c509 EEPROM word %d %#4.4x.\n", index, word);
769 return word;
773 static int
774 el3_open(struct net_device *dev)
776 int ioaddr = dev->base_addr;
777 int i;
779 outw(TxReset, ioaddr + EL3_CMD);
780 outw(RxReset, ioaddr + EL3_CMD);
781 outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
783 i = request_irq(dev->irq, &el3_interrupt, 0, dev->name, dev);
784 if (i)
785 return i;
787 EL3WINDOW(0);
788 if (el3_debug > 3)
789 pr_debug("%s: Opening, IRQ %d status@%x %4.4x.\n", dev->name,
790 dev->irq, ioaddr + EL3_STATUS, inw(ioaddr + EL3_STATUS));
792 el3_up(dev);
794 if (el3_debug > 3)
795 pr_debug("%s: Opened 3c509 IRQ %d status %4.4x.\n",
796 dev->name, dev->irq, inw(ioaddr + EL3_STATUS));
798 return 0;
801 static void
802 el3_tx_timeout (struct net_device *dev)
804 int ioaddr = dev->base_addr;
806 /* Transmitter timeout, serious problems. */
807 pr_warning("%s: transmit timed out, Tx_status %2.2x status %4.4x Tx FIFO room %d.\n",
808 dev->name, inb(ioaddr + TX_STATUS), inw(ioaddr + EL3_STATUS),
809 inw(ioaddr + TX_FREE));
810 dev->stats.tx_errors++;
811 dev->trans_start = jiffies;
812 /* Issue TX_RESET and TX_START commands. */
813 outw(TxReset, ioaddr + EL3_CMD);
814 outw(TxEnable, ioaddr + EL3_CMD);
815 netif_wake_queue(dev);
819 static netdev_tx_t
820 el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
822 struct el3_private *lp = netdev_priv(dev);
823 int ioaddr = dev->base_addr;
824 unsigned long flags;
826 netif_stop_queue (dev);
828 dev->stats.tx_bytes += skb->len;
830 if (el3_debug > 4) {
831 pr_debug("%s: el3_start_xmit(length = %u) called, status %4.4x.\n",
832 dev->name, skb->len, inw(ioaddr + EL3_STATUS));
834 #if 0
835 #ifndef final_version
836 { /* Error-checking code, delete someday. */
837 ushort status = inw(ioaddr + EL3_STATUS);
838 if (status & 0x0001 /* IRQ line active, missed one. */
839 && inw(ioaddr + EL3_STATUS) & 1) { /* Make sure. */
840 pr_debug("%s: Missed interrupt, status then %04x now %04x"
841 " Tx %2.2x Rx %4.4x.\n", dev->name, status,
842 inw(ioaddr + EL3_STATUS), inb(ioaddr + TX_STATUS),
843 inw(ioaddr + RX_STATUS));
844 /* Fake interrupt trigger by masking, acknowledge interrupts. */
845 outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
846 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
847 ioaddr + EL3_CMD);
848 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
851 #endif
852 #endif
854 * We lock the driver against other processors. Note
855 * we don't need to lock versus the IRQ as we suspended
856 * that. This means that we lose the ability to take
857 * an RX during a TX upload. That sucks a bit with SMP
858 * on an original 3c509 (2K buffer)
860 * Using disable_irq stops us crapping on other
861 * time sensitive devices.
864 spin_lock_irqsave(&lp->lock, flags);
866 /* Put out the doubleword header... */
867 outw(skb->len, ioaddr + TX_FIFO);
868 outw(0x00, ioaddr + TX_FIFO);
869 /* ... and the packet rounded to a doubleword. */
870 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
872 dev->trans_start = jiffies;
873 if (inw(ioaddr + TX_FREE) > 1536)
874 netif_start_queue(dev);
875 else
876 /* Interrupt us when the FIFO has room for max-sized packet. */
877 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
879 spin_unlock_irqrestore(&lp->lock, flags);
881 dev_kfree_skb (skb);
883 /* Clear the Tx status stack. */
885 short tx_status;
886 int i = 4;
888 while (--i > 0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
889 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
890 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
891 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
892 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
895 return NETDEV_TX_OK;
898 /* The EL3 interrupt handler. */
899 static irqreturn_t
900 el3_interrupt(int irq, void *dev_id)
902 struct net_device *dev = dev_id;
903 struct el3_private *lp;
904 int ioaddr, status;
905 int i = max_interrupt_work;
907 lp = netdev_priv(dev);
908 spin_lock(&lp->lock);
910 ioaddr = dev->base_addr;
912 if (el3_debug > 4) {
913 status = inw(ioaddr + EL3_STATUS);
914 pr_debug("%s: interrupt, status %4.4x.\n", dev->name, status);
917 while ((status = inw(ioaddr + EL3_STATUS)) &
918 (IntLatch | RxComplete | StatsFull)) {
920 if (status & RxComplete)
921 el3_rx(dev);
923 if (status & TxAvailable) {
924 if (el3_debug > 5)
925 pr_debug(" TX room bit was handled.\n");
926 /* There's room in the FIFO for a full-sized packet. */
927 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
928 netif_wake_queue (dev);
930 if (status & (AdapterFailure | RxEarly | StatsFull | TxComplete)) {
931 /* Handle all uncommon interrupts. */
932 if (status & StatsFull) /* Empty statistics. */
933 update_stats(dev);
934 if (status & RxEarly) { /* Rx early is unused. */
935 el3_rx(dev);
936 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
938 if (status & TxComplete) { /* Really Tx error. */
939 short tx_status;
940 int i = 4;
942 while (--i>0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
943 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
944 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
945 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
946 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
949 if (status & AdapterFailure) {
950 /* Adapter failure requires Rx reset and reinit. */
951 outw(RxReset, ioaddr + EL3_CMD);
952 /* Set the Rx filter to the current state. */
953 outw(SetRxFilter | RxStation | RxBroadcast
954 | (dev->flags & IFF_ALLMULTI ? RxMulticast : 0)
955 | (dev->flags & IFF_PROMISC ? RxProm : 0),
956 ioaddr + EL3_CMD);
957 outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
958 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
962 if (--i < 0) {
963 pr_err("%s: Infinite loop in interrupt, status %4.4x.\n",
964 dev->name, status);
965 /* Clear all interrupts. */
966 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
967 break;
969 /* Acknowledge the IRQ. */
970 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); /* Ack IRQ */
973 if (el3_debug > 4) {
974 pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name,
975 inw(ioaddr + EL3_STATUS));
977 spin_unlock(&lp->lock);
978 return IRQ_HANDLED;
982 #ifdef CONFIG_NET_POLL_CONTROLLER
984 * Polling receive - used by netconsole and other diagnostic tools
985 * to allow network i/o with interrupts disabled.
987 static void el3_poll_controller(struct net_device *dev)
989 disable_irq(dev->irq);
990 el3_interrupt(dev->irq, dev);
991 enable_irq(dev->irq);
993 #endif
995 static struct net_device_stats *
996 el3_get_stats(struct net_device *dev)
998 struct el3_private *lp = netdev_priv(dev);
999 unsigned long flags;
1002 * This is fast enough not to bother with disable IRQ
1003 * stuff.
1006 spin_lock_irqsave(&lp->lock, flags);
1007 update_stats(dev);
1008 spin_unlock_irqrestore(&lp->lock, flags);
1009 return &dev->stats;
1012 /* Update statistics. We change to register window 6, so this should be run
1013 single-threaded if the device is active. This is expected to be a rare
1014 operation, and it's simpler for the rest of the driver to assume that
1015 window 1 is always valid rather than use a special window-state variable.
1017 static void update_stats(struct net_device *dev)
1019 int ioaddr = dev->base_addr;
1021 if (el3_debug > 5)
1022 pr_debug(" Updating the statistics.\n");
1023 /* Turn off statistics updates while reading. */
1024 outw(StatsDisable, ioaddr + EL3_CMD);
1025 /* Switch to the stats window, and read everything. */
1026 EL3WINDOW(6);
1027 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
1028 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
1029 /* Multiple collisions. */ inb(ioaddr + 2);
1030 dev->stats.collisions += inb(ioaddr + 3);
1031 dev->stats.tx_window_errors += inb(ioaddr + 4);
1032 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
1033 dev->stats.tx_packets += inb(ioaddr + 6);
1034 /* Rx packets */ inb(ioaddr + 7);
1035 /* Tx deferrals */ inb(ioaddr + 8);
1036 inw(ioaddr + 10); /* Total Rx and Tx octets. */
1037 inw(ioaddr + 12);
1039 /* Back to window 1, and turn statistics back on. */
1040 EL3WINDOW(1);
1041 outw(StatsEnable, ioaddr + EL3_CMD);
1042 return;
1045 static int
1046 el3_rx(struct net_device *dev)
1048 int ioaddr = dev->base_addr;
1049 short rx_status;
1051 if (el3_debug > 5)
1052 pr_debug(" In rx_packet(), status %4.4x, rx_status %4.4x.\n",
1053 inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
1054 while ((rx_status = inw(ioaddr + RX_STATUS)) > 0) {
1055 if (rx_status & 0x4000) { /* Error, update stats. */
1056 short error = rx_status & 0x3800;
1058 outw(RxDiscard, ioaddr + EL3_CMD);
1059 dev->stats.rx_errors++;
1060 switch (error) {
1061 case 0x0000: dev->stats.rx_over_errors++; break;
1062 case 0x0800: dev->stats.rx_length_errors++; break;
1063 case 0x1000: dev->stats.rx_frame_errors++; break;
1064 case 0x1800: dev->stats.rx_length_errors++; break;
1065 case 0x2000: dev->stats.rx_frame_errors++; break;
1066 case 0x2800: dev->stats.rx_crc_errors++; break;
1068 } else {
1069 short pkt_len = rx_status & 0x7ff;
1070 struct sk_buff *skb;
1072 skb = dev_alloc_skb(pkt_len+5);
1073 if (el3_debug > 4)
1074 pr_debug("Receiving packet size %d status %4.4x.\n",
1075 pkt_len, rx_status);
1076 if (skb != NULL) {
1077 skb_reserve(skb, 2); /* Align IP on 16 byte */
1079 /* 'skb->data' points to the start of sk_buff data area. */
1080 insl(ioaddr + RX_FIFO, skb_put(skb,pkt_len),
1081 (pkt_len + 3) >> 2);
1083 outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */
1084 skb->protocol = eth_type_trans(skb,dev);
1085 netif_rx(skb);
1086 dev->stats.rx_bytes += pkt_len;
1087 dev->stats.rx_packets++;
1088 continue;
1090 outw(RxDiscard, ioaddr + EL3_CMD);
1091 dev->stats.rx_dropped++;
1092 if (el3_debug)
1093 pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n",
1094 dev->name, pkt_len);
1096 inw(ioaddr + EL3_STATUS); /* Delay. */
1097 while (inw(ioaddr + EL3_STATUS) & 0x1000)
1098 pr_debug(" Waiting for 3c509 to discard packet, status %x.\n",
1099 inw(ioaddr + EL3_STATUS) );
1102 return 0;
1106 * Set or clear the multicast filter for this adaptor.
1108 static void
1109 set_multicast_list(struct net_device *dev)
1111 unsigned long flags;
1112 struct el3_private *lp = netdev_priv(dev);
1113 int ioaddr = dev->base_addr;
1115 if (el3_debug > 1) {
1116 static int old;
1117 if (old != dev->mc_count) {
1118 old = dev->mc_count;
1119 pr_debug("%s: Setting Rx mode to %d addresses.\n", dev->name, dev->mc_count);
1122 spin_lock_irqsave(&lp->lock, flags);
1123 if (dev->flags&IFF_PROMISC) {
1124 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
1125 ioaddr + EL3_CMD);
1127 else if (dev->mc_count || (dev->flags&IFF_ALLMULTI)) {
1128 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast, ioaddr + EL3_CMD);
1130 else
1131 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1132 spin_unlock_irqrestore(&lp->lock, flags);
1135 static int
1136 el3_close(struct net_device *dev)
1138 int ioaddr = dev->base_addr;
1139 struct el3_private *lp = netdev_priv(dev);
1141 if (el3_debug > 2)
1142 pr_debug("%s: Shutting down ethercard.\n", dev->name);
1144 el3_down(dev);
1146 free_irq(dev->irq, dev);
1147 /* Switching back to window 0 disables the IRQ. */
1148 EL3WINDOW(0);
1149 if (lp->type != EL3_EISA) {
1150 /* But we explicitly zero the IRQ line select anyway. Don't do
1151 * it on EISA cards, it prevents the module from getting an
1152 * IRQ after unload+reload... */
1153 outw(0x0f00, ioaddr + WN0_IRQ);
1156 return 0;
1159 static int
1160 el3_link_ok(struct net_device *dev)
1162 int ioaddr = dev->base_addr;
1163 u16 tmp;
1165 EL3WINDOW(4);
1166 tmp = inw(ioaddr + WN4_MEDIA);
1167 EL3WINDOW(1);
1168 return tmp & (1<<11);
1171 static int
1172 el3_netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
1174 u16 tmp;
1175 int ioaddr = dev->base_addr;
1177 EL3WINDOW(0);
1178 /* obtain current transceiver via WN4_MEDIA? */
1179 tmp = inw(ioaddr + WN0_ADDR_CONF);
1180 ecmd->transceiver = XCVR_INTERNAL;
1181 switch (tmp >> 14) {
1182 case 0:
1183 ecmd->port = PORT_TP;
1184 break;
1185 case 1:
1186 ecmd->port = PORT_AUI;
1187 ecmd->transceiver = XCVR_EXTERNAL;
1188 break;
1189 case 3:
1190 ecmd->port = PORT_BNC;
1191 default:
1192 break;
1195 ecmd->duplex = DUPLEX_HALF;
1196 ecmd->supported = 0;
1197 tmp = inw(ioaddr + WN0_CONF_CTRL);
1198 if (tmp & (1<<13))
1199 ecmd->supported |= SUPPORTED_AUI;
1200 if (tmp & (1<<12))
1201 ecmd->supported |= SUPPORTED_BNC;
1202 if (tmp & (1<<9)) {
1203 ecmd->supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half |
1204 SUPPORTED_10baseT_Full; /* hmm... */
1205 EL3WINDOW(4);
1206 tmp = inw(ioaddr + WN4_NETDIAG);
1207 if (tmp & FD_ENABLE)
1208 ecmd->duplex = DUPLEX_FULL;
1211 ecmd->speed = SPEED_10;
1212 EL3WINDOW(1);
1213 return 0;
1216 static int
1217 el3_netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
1219 u16 tmp;
1220 int ioaddr = dev->base_addr;
1222 if (ecmd->speed != SPEED_10)
1223 return -EINVAL;
1224 if ((ecmd->duplex != DUPLEX_HALF) && (ecmd->duplex != DUPLEX_FULL))
1225 return -EINVAL;
1226 if ((ecmd->transceiver != XCVR_INTERNAL) && (ecmd->transceiver != XCVR_EXTERNAL))
1227 return -EINVAL;
1229 /* change XCVR type */
1230 EL3WINDOW(0);
1231 tmp = inw(ioaddr + WN0_ADDR_CONF);
1232 switch (ecmd->port) {
1233 case PORT_TP:
1234 tmp &= ~(3<<14);
1235 dev->if_port = 0;
1236 break;
1237 case PORT_AUI:
1238 tmp |= (1<<14);
1239 dev->if_port = 1;
1240 break;
1241 case PORT_BNC:
1242 tmp |= (3<<14);
1243 dev->if_port = 3;
1244 break;
1245 default:
1246 return -EINVAL;
1249 outw(tmp, ioaddr + WN0_ADDR_CONF);
1250 if (dev->if_port == 3) {
1251 /* fire up the DC-DC convertor if BNC gets enabled */
1252 tmp = inw(ioaddr + WN0_ADDR_CONF);
1253 if (tmp & (3 << 14)) {
1254 outw(StartCoax, ioaddr + EL3_CMD);
1255 udelay(800);
1256 } else
1257 return -EIO;
1260 EL3WINDOW(4);
1261 tmp = inw(ioaddr + WN4_NETDIAG);
1262 if (ecmd->duplex == DUPLEX_FULL)
1263 tmp |= FD_ENABLE;
1264 else
1265 tmp &= ~FD_ENABLE;
1266 outw(tmp, ioaddr + WN4_NETDIAG);
1267 EL3WINDOW(1);
1269 return 0;
1272 static void el3_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1274 strcpy(info->driver, DRV_NAME);
1275 strcpy(info->version, DRV_VERSION);
1278 static int el3_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1280 struct el3_private *lp = netdev_priv(dev);
1281 int ret;
1283 spin_lock_irq(&lp->lock);
1284 ret = el3_netdev_get_ecmd(dev, ecmd);
1285 spin_unlock_irq(&lp->lock);
1286 return ret;
1289 static int el3_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1291 struct el3_private *lp = netdev_priv(dev);
1292 int ret;
1294 spin_lock_irq(&lp->lock);
1295 ret = el3_netdev_set_ecmd(dev, ecmd);
1296 spin_unlock_irq(&lp->lock);
1297 return ret;
1300 static u32 el3_get_link(struct net_device *dev)
1302 struct el3_private *lp = netdev_priv(dev);
1303 u32 ret;
1305 spin_lock_irq(&lp->lock);
1306 ret = el3_link_ok(dev);
1307 spin_unlock_irq(&lp->lock);
1308 return ret;
1311 static u32 el3_get_msglevel(struct net_device *dev)
1313 return el3_debug;
1316 static void el3_set_msglevel(struct net_device *dev, u32 v)
1318 el3_debug = v;
1321 static const struct ethtool_ops ethtool_ops = {
1322 .get_drvinfo = el3_get_drvinfo,
1323 .get_settings = el3_get_settings,
1324 .set_settings = el3_set_settings,
1325 .get_link = el3_get_link,
1326 .get_msglevel = el3_get_msglevel,
1327 .set_msglevel = el3_set_msglevel,
1330 static void
1331 el3_down(struct net_device *dev)
1333 int ioaddr = dev->base_addr;
1335 netif_stop_queue(dev);
1337 /* Turn off statistics ASAP. We update lp->stats below. */
1338 outw(StatsDisable, ioaddr + EL3_CMD);
1340 /* Disable the receiver and transmitter. */
1341 outw(RxDisable, ioaddr + EL3_CMD);
1342 outw(TxDisable, ioaddr + EL3_CMD);
1344 if (dev->if_port == 3)
1345 /* Turn off thinnet power. Green! */
1346 outw(StopCoax, ioaddr + EL3_CMD);
1347 else if (dev->if_port == 0) {
1348 /* Disable link beat and jabber, if_port may change here next open(). */
1349 EL3WINDOW(4);
1350 outw(inw(ioaddr + WN4_MEDIA) & ~MEDIA_TP, ioaddr + WN4_MEDIA);
1353 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1355 update_stats(dev);
1358 static void
1359 el3_up(struct net_device *dev)
1361 int i, sw_info, net_diag;
1362 int ioaddr = dev->base_addr;
1364 /* Activating the board required and does no harm otherwise */
1365 outw(0x0001, ioaddr + 4);
1367 /* Set the IRQ line. */
1368 outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ);
1370 /* Set the station address in window 2 each time opened. */
1371 EL3WINDOW(2);
1373 for (i = 0; i < 6; i++)
1374 outb(dev->dev_addr[i], ioaddr + i);
1376 if ((dev->if_port & 0x03) == 3) /* BNC interface */
1377 /* Start the thinnet transceiver. We should really wait 50ms...*/
1378 outw(StartCoax, ioaddr + EL3_CMD);
1379 else if ((dev->if_port & 0x03) == 0) { /* 10baseT interface */
1380 /* Combine secondary sw_info word (the adapter level) and primary
1381 sw_info word (duplex setting plus other useless bits) */
1382 EL3WINDOW(0);
1383 sw_info = (read_eeprom(ioaddr, 0x14) & 0x400f) |
1384 (read_eeprom(ioaddr, 0x0d) & 0xBff0);
1386 EL3WINDOW(4);
1387 net_diag = inw(ioaddr + WN4_NETDIAG);
1388 net_diag = (net_diag | FD_ENABLE); /* temporarily assume full-duplex will be set */
1389 pr_info("%s: ", dev->name);
1390 switch (dev->if_port & 0x0c) {
1391 case 12:
1392 /* force full-duplex mode if 3c5x9b */
1393 if (sw_info & 0x000f) {
1394 pr_cont("Forcing 3c5x9b full-duplex mode");
1395 break;
1397 case 8:
1398 /* set full-duplex mode based on eeprom config setting */
1399 if ((sw_info & 0x000f) && (sw_info & 0x8000)) {
1400 pr_cont("Setting 3c5x9b full-duplex mode (from EEPROM configuration bit)");
1401 break;
1403 default:
1404 /* xcvr=(0 || 4) OR user has an old 3c5x9 non "B" model */
1405 pr_cont("Setting 3c5x9/3c5x9B half-duplex mode");
1406 net_diag = (net_diag & ~FD_ENABLE); /* disable full duplex */
1409 outw(net_diag, ioaddr + WN4_NETDIAG);
1410 pr_cont(" if_port: %d, sw_info: %4.4x\n", dev->if_port, sw_info);
1411 if (el3_debug > 3)
1412 pr_debug("%s: 3c5x9 net diag word is now: %4.4x.\n", dev->name, net_diag);
1413 /* Enable link beat and jabber check. */
1414 outw(inw(ioaddr + WN4_MEDIA) | MEDIA_TP, ioaddr + WN4_MEDIA);
1417 /* Switch to the stats window, and clear all stats by reading. */
1418 outw(StatsDisable, ioaddr + EL3_CMD);
1419 EL3WINDOW(6);
1420 for (i = 0; i < 9; i++)
1421 inb(ioaddr + i);
1422 inw(ioaddr + 10);
1423 inw(ioaddr + 12);
1425 /* Switch to register set 1 for normal use. */
1426 EL3WINDOW(1);
1428 /* Accept b-case and phys addr only. */
1429 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1430 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
1432 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
1433 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
1434 /* Allow status bits to be seen. */
1435 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
1436 /* Ack all pending events, and set active indicator mask. */
1437 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
1438 ioaddr + EL3_CMD);
1439 outw(SetIntrEnb | IntLatch|TxAvailable|TxComplete|RxComplete|StatsFull,
1440 ioaddr + EL3_CMD);
1442 netif_start_queue(dev);
1445 /* Power Management support functions */
1446 #ifdef CONFIG_PM
1448 static int
1449 el3_suspend(struct device *pdev, pm_message_t state)
1451 unsigned long flags;
1452 struct net_device *dev;
1453 struct el3_private *lp;
1454 int ioaddr;
1456 dev = dev_get_drvdata(pdev);
1457 lp = netdev_priv(dev);
1458 ioaddr = dev->base_addr;
1460 spin_lock_irqsave(&lp->lock, flags);
1462 if (netif_running(dev))
1463 netif_device_detach(dev);
1465 el3_down(dev);
1466 outw(PowerDown, ioaddr + EL3_CMD);
1468 spin_unlock_irqrestore(&lp->lock, flags);
1469 return 0;
1472 static int
1473 el3_resume(struct device *pdev)
1475 unsigned long flags;
1476 struct net_device *dev;
1477 struct el3_private *lp;
1478 int ioaddr;
1480 dev = dev_get_drvdata(pdev);
1481 lp = netdev_priv(dev);
1482 ioaddr = dev->base_addr;
1484 spin_lock_irqsave(&lp->lock, flags);
1486 outw(PowerUp, ioaddr + EL3_CMD);
1487 EL3WINDOW(0);
1488 el3_up(dev);
1490 if (netif_running(dev))
1491 netif_device_attach(dev);
1493 spin_unlock_irqrestore(&lp->lock, flags);
1494 return 0;
1497 #endif /* CONFIG_PM */
1499 module_param(debug,int, 0);
1500 module_param_array(irq, int, NULL, 0);
1501 module_param(max_interrupt_work, int, 0);
1502 MODULE_PARM_DESC(debug, "debug level (0-6)");
1503 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
1504 MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt");
1505 #ifdef CONFIG_PNP
1506 module_param(nopnp, int, 0);
1507 MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)");
1508 #endif /* CONFIG_PNP */
1509 MODULE_DESCRIPTION("3Com Etherlink III (3c509, 3c509B, 3c529, 3c579) ethernet driver");
1510 MODULE_LICENSE("GPL");
1512 static int __init el3_init_module(void)
1514 int ret = 0;
1516 if (debug >= 0)
1517 el3_debug = debug;
1519 #ifdef CONFIG_PNP
1520 if (!nopnp) {
1521 ret = pnp_register_driver(&el3_pnp_driver);
1522 if (!ret)
1523 pnp_registered = 1;
1525 #endif
1526 /* Select an open I/O location at 0x1*0 to do ISA contention select. */
1527 /* Start with 0x110 to avoid some sound cards.*/
1528 for (id_port = 0x110 ; id_port < 0x200; id_port += 0x10) {
1529 if (!request_region(id_port, 1, "3c509-control"))
1530 continue;
1531 outb(0x00, id_port);
1532 outb(0xff, id_port);
1533 if (inb(id_port) & 0x01)
1534 break;
1535 else
1536 release_region(id_port, 1);
1538 if (id_port >= 0x200) {
1539 id_port = 0;
1540 pr_err("No I/O port available for 3c509 activation.\n");
1541 } else {
1542 ret = isa_register_driver(&el3_isa_driver, EL3_MAX_CARDS);
1543 if (!ret)
1544 isa_registered = 1;
1546 #ifdef CONFIG_EISA
1547 ret = eisa_driver_register(&el3_eisa_driver);
1548 if (!ret)
1549 eisa_registered = 1;
1550 #endif
1551 #ifdef CONFIG_MCA
1552 ret = mca_register_driver(&el3_mca_driver);
1553 if (!ret)
1554 mca_registered = 1;
1555 #endif
1557 #ifdef CONFIG_PNP
1558 if (pnp_registered)
1559 ret = 0;
1560 #endif
1561 if (isa_registered)
1562 ret = 0;
1563 #ifdef CONFIG_EISA
1564 if (eisa_registered)
1565 ret = 0;
1566 #endif
1567 #ifdef CONFIG_MCA
1568 if (mca_registered)
1569 ret = 0;
1570 #endif
1571 return ret;
1574 static void __exit el3_cleanup_module(void)
1576 #ifdef CONFIG_PNP
1577 if (pnp_registered)
1578 pnp_unregister_driver(&el3_pnp_driver);
1579 #endif
1580 if (isa_registered)
1581 isa_unregister_driver(&el3_isa_driver);
1582 if (id_port)
1583 release_region(id_port, 1);
1584 #ifdef CONFIG_EISA
1585 if (eisa_registered)
1586 eisa_driver_unregister(&el3_eisa_driver);
1587 #endif
1588 #ifdef CONFIG_MCA
1589 if (mca_registered)
1590 mca_unregister_driver(&el3_mca_driver);
1591 #endif
1594 module_init (el3_init_module);
1595 module_exit (el3_cleanup_module);