1 /* 3c509.c: A 3c509 EtherLink3 ethernet driver for linux. */
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
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.
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)
35 v1.10 4/21/97 Fixed module code so that multiple cards may be detected,
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 <andrewm@uow.edu.au>
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>
48 v1.18b 1Mar2002 Zwane Mwaikambo <zwane@commfireservices.com>
49 - Power Management support
50 v1.18c 1Mar2002 David Ruggiero <jdr@farfalle.com>
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.
60 #define DRV_NAME "3c509"
61 #define DRV_VERSION "1.19b"
62 #define DRV_RELDATE "08Nov2002"
64 /* A few values that may be tweaked. */
66 /* Time in jiffies before concluding the transmitter is hung. */
67 #define TX_TIMEOUT (400*HZ/1000)
68 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
69 static int max_interrupt_work = 10;
71 #include <linux/module.h>
73 #include <linux/mca.h>
75 #include <linux/isapnp.h>
76 #include <linux/string.h>
77 #include <linux/interrupt.h>
78 #include <linux/errno.h>
80 #include <linux/slab.h>
81 #include <linux/ioport.h>
82 #include <linux/init.h>
83 #include <linux/netdevice.h>
84 #include <linux/etherdevice.h>
86 #include <linux/skbuff.h>
87 #include <linux/delay.h> /* for udelay() */
88 #include <linux/spinlock.h>
89 #include <linux/ethtool.h>
90 #include <linux/device.h>
91 #include <linux/eisa.h>
92 #include <linux/bitops.h>
94 #include <asm/uaccess.h>
98 static char version[] __initdata = DRV_NAME ".c:" DRV_VERSION " " DRV_RELDATE " becker@scyld.com\n";
100 #if defined(CONFIG_PM) && (defined(CONFIG_MCA) || defined(CONFIG_EISA))
105 static int el3_debug = EL3_DEBUG;
107 static int el3_debug = 2;
110 /* Used to do a global count of all the cards in the system. Must be
111 * a global variable so that the mca/eisa probe routines can increment
113 static int el3_cards = 0;
115 /* To minimize the size of the driver source I only define operating
116 constants if they are used several times. You'll need the manual
117 anyway if you want to understand driver details. */
118 /* Offsets from base I/O address. */
119 #define EL3_DATA 0x00
121 #define EL3_STATUS 0x0e
122 #define EEPROM_READ 0x80
124 #define EL3_IO_EXTENT 16
126 #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
129 /* The top five bits written to EL3_CMD are a command, the lower
130 11 bits are the parameter, if applicable. */
132 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
133 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
134 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
135 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
136 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
137 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
138 StatsDisable = 22<<11, StopCoax = 23<<11, PowerUp = 27<<11,
139 PowerDown = 28<<11, PowerAuto = 29<<11};
142 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
143 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
144 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000, };
146 /* The SetRxFilter command accepts the following classes: */
148 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 };
150 /* Register window 1 offsets, the window used in normal operation. */
153 #define RX_STATUS 0x08
154 #define TX_STATUS 0x0B
155 #define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
157 #define WN0_CONF_CTRL 0x04 /* Window 0: Configuration control register */
158 #define WN0_ADDR_CONF 0x06 /* Window 0: Address configuration register */
159 #define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
160 #define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
161 #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
162 #define WN4_NETDIAG 0x06 /* Window 4: Net diagnostic */
163 #define FD_ENABLE 0x8000 /* Enable full-duplex ("external loopback") */
166 * Must be a power of two (we use a binary and in the
169 #define SKB_QUEUE_SIZE 64
172 struct net_device_stats stats;
173 struct net_device *next_dev;
177 struct sk_buff *queue[SKB_QUEUE_SIZE];
182 } type; /* type of device */
185 static int id_port __initdata = 0x110; /* Start with 0x110 to avoid new sound cards.*/
186 static struct net_device *el3_root_dev;
188 static ushort id_read_eeprom(int index);
189 static ushort read_eeprom(int ioaddr, int index);
190 static int el3_open(struct net_device *dev);
191 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
192 static irqreturn_t el3_interrupt(int irq, void *dev_id);
193 static void update_stats(struct net_device *dev);
194 static struct net_device_stats *el3_get_stats(struct net_device *dev);
195 static int el3_rx(struct net_device *dev);
196 static int el3_close(struct net_device *dev);
197 static void set_multicast_list(struct net_device *dev);
198 static void el3_tx_timeout (struct net_device *dev);
199 static void el3_down(struct net_device *dev);
200 static void el3_up(struct net_device *dev);
201 static const struct ethtool_ops ethtool_ops;
203 static int el3_suspend(struct device *, pm_message_t);
204 static int el3_resume(struct device *);
206 #define el3_suspend NULL
207 #define el3_resume NULL
211 /* generic device remove for all device types */
212 #if defined(CONFIG_EISA) || defined(CONFIG_MCA)
213 static int el3_device_remove (struct device *device);
215 #ifdef CONFIG_NET_POLL_CONTROLLER
216 static void el3_poll_controller(struct net_device *dev);
220 static struct eisa_device_id el3_eisa_ids[] = {
226 MODULE_DEVICE_TABLE(eisa, el3_eisa_ids);
228 static int el3_eisa_probe (struct device *device);
230 static struct eisa_driver el3_eisa_driver = {
231 .id_table = el3_eisa_ids,
234 .probe = el3_eisa_probe,
235 .remove = __devexit_p (el3_device_remove),
236 .suspend = el3_suspend,
237 .resume = el3_resume,
243 static int el3_mca_probe(struct device *dev);
245 static short el3_mca_adapter_ids[] __initdata = {
254 static char *el3_mca_adapter_names[] __initdata = {
255 "3Com 3c529 EtherLink III (10base2)",
256 "3Com 3c529 EtherLink III (10baseT)",
257 "3Com 3c529 EtherLink III (test mode)",
258 "3Com 3c529 EtherLink III (TP or coax)",
259 "3Com 3c529 EtherLink III (TP)",
263 static struct mca_driver el3_mca_driver = {
264 .id_table = el3_mca_adapter_ids,
267 .bus = &mca_bus_type,
268 .probe = el3_mca_probe,
269 .remove = __devexit_p(el3_device_remove),
270 .suspend = el3_suspend,
271 .resume = el3_resume,
274 #endif /* CONFIG_MCA */
276 #if defined(__ISAPNP__)
277 static struct isapnp_device_id el3_isapnp_adapters[] __initdata = {
278 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
279 ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5090),
280 (long) "3Com Etherlink III (TP)" },
281 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
282 ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5091),
283 (long) "3Com Etherlink III" },
284 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
285 ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5094),
286 (long) "3Com Etherlink III (combo)" },
287 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
288 ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5095),
289 (long) "3Com Etherlink III (TPO)" },
290 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
291 ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5098),
292 (long) "3Com Etherlink III (TPC)" },
293 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
294 ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_FUNCTION(0x80f7),
295 (long) "3Com Etherlink III compatible" },
296 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
297 ISAPNP_VENDOR('P', 'N', 'P'), ISAPNP_FUNCTION(0x80f8),
298 (long) "3Com Etherlink III compatible" },
299 { } /* terminate list */
302 static u16 el3_isapnp_phys_addr[8][3];
304 #endif /* __ISAPNP__ */
306 /* With the driver model introduction for EISA devices, both init
307 * and cleanup have been split :
308 * - EISA devices probe/remove starts in el3_eisa_probe/el3_device_remove
309 * - MCA/ISA still use el3_probe
311 * Both call el3_common_init/el3_common_remove. */
313 static int __init el3_common_init(struct net_device *dev)
315 struct el3_private *lp = netdev_priv(dev);
317 DECLARE_MAC_BUF(mac);
318 const char *if_names[] = {"10baseT", "AUI", "undefined", "BNC"};
320 spin_lock_init(&lp->lock);
322 if (dev->mem_start & 0x05) { /* xcvr codes 1/3/4/12 */
323 dev->if_port = (dev->mem_start & 0x0f);
324 } else { /* xcvr codes 0/8 */
325 /* use eeprom value, but save user's full-duplex selection */
326 dev->if_port |= (dev->mem_start & 0x08);
329 /* The EL3-specific entries in the device structure. */
330 dev->open = &el3_open;
331 dev->hard_start_xmit = &el3_start_xmit;
332 dev->stop = &el3_close;
333 dev->get_stats = &el3_get_stats;
334 dev->set_multicast_list = &set_multicast_list;
335 dev->tx_timeout = el3_tx_timeout;
336 dev->watchdog_timeo = TX_TIMEOUT;
337 #ifdef CONFIG_NET_POLL_CONTROLLER
338 dev->poll_controller = el3_poll_controller;
340 SET_ETHTOOL_OPS(dev, ðtool_ops);
342 err = register_netdev(dev);
344 printk(KERN_ERR "Failed to register 3c5x9 at %#3.3lx, IRQ %d.\n",
345 dev->base_addr, dev->irq);
346 release_region(dev->base_addr, EL3_IO_EXTENT);
350 printk(KERN_INFO "%s: 3c5x9 found at %#3.3lx, %s port, "
351 "address %s, IRQ %d.\n",
352 dev->name, dev->base_addr, if_names[(dev->if_port & 0x03)],
353 print_mac(mac, dev->dev_addr), dev->irq);
356 printk(KERN_INFO "%s", version);
361 static void el3_common_remove (struct net_device *dev)
363 struct el3_private *lp = netdev_priv(dev);
365 (void) lp; /* Keep gcc quiet... */
366 #if defined(__ISAPNP__)
367 if (lp->type == EL3_PNP)
368 pnp_device_detach(to_pnp_dev(lp->dev));
371 unregister_netdev (dev);
372 release_region(dev->base_addr, EL3_IO_EXTENT);
376 static int __init el3_probe(int card_idx)
378 struct net_device *dev;
379 struct el3_private *lp;
380 short lrs_state = 0xff, i;
381 int ioaddr, irq, if_port;
383 static int current_tag;
385 #if defined(__ISAPNP__)
386 static int pnp_cards;
387 struct pnp_dev *idev = NULL;
392 for (i=0; el3_isapnp_adapters[i].vendor != 0; i++) {
394 while ((idev = pnp_find_dev(NULL,
395 el3_isapnp_adapters[i].vendor,
396 el3_isapnp_adapters[i].function,
398 if (pnp_device_attach(idev) < 0)
400 if (pnp_activate_dev(idev) < 0) {
402 pnp_device_detach(idev);
405 if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0))
407 ioaddr = pnp_port_start(idev, 0);
408 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509 PnP")) {
409 pnp_device_detach(idev);
412 irq = pnp_irq(idev, 0);
414 printk ("ISAPnP reports %s at i/o 0x%x, irq %d\n",
415 (char*) el3_isapnp_adapters[i].driver_data, ioaddr, irq);
417 for (j = 0; j < 3; j++)
418 el3_isapnp_phys_addr[pnp_cards][j] =
420 htons(read_eeprom(ioaddr, j));
421 if_port = read_eeprom(ioaddr, 8) >> 14;
422 dev = alloc_etherdev(sizeof (struct el3_private));
424 release_region(ioaddr, EL3_IO_EXTENT);
425 pnp_device_detach(idev);
429 SET_NETDEV_DEV(dev, &idev->dev);
432 netdev_boot_setup_check(dev);
437 #endif /* __ISAPNP__ */
439 /* Select an open I/O location at 0x1*0 to do contention select. */
440 for ( ; id_port < 0x200; id_port += 0x10) {
441 if (!request_region(id_port, 1, "3c509"))
445 if (inb(id_port) & 0x01){
446 release_region(id_port, 1);
449 release_region(id_port, 1);
451 if (id_port >= 0x200) {
452 /* Rare -- do we really need a warning? */
453 printk(" WARNING: No I/O port available for 3c509 activation.\n");
457 /* Next check for all ISA bus boards by sending the ID sequence to the
458 ID_PORT. We find cards past the first by setting the 'current_tag'
459 on cards as they are found. Cards with their tag set will not
460 respond to subsequent ID sequences. */
464 for(i = 0; i < 255; i++) {
465 outb(lrs_state, id_port);
467 lrs_state = lrs_state & 0x100 ? lrs_state ^ 0xcf : lrs_state;
470 /* For the first probe, clear all board's tag registers. */
471 if (current_tag == 0)
473 else /* Otherwise kill off already-found boards. */
476 if (id_read_eeprom(7) != 0x6d50) {
480 /* Read in EEPROM data, which does contention-select.
481 Only the lowest address board will stay "on-line".
482 3Com got the byte order backwards. */
483 for (i = 0; i < 3; i++) {
484 phys_addr[i] = htons(id_read_eeprom(i));
487 #if defined(__ISAPNP__)
489 /* The ISA PnP 3c509 cards respond to the ID sequence.
490 This check is needed in order not to register them twice. */
491 for (i = 0; i < pnp_cards; i++) {
492 if (phys_addr[0] == el3_isapnp_phys_addr[i][0] &&
493 phys_addr[1] == el3_isapnp_phys_addr[i][1] &&
494 phys_addr[2] == el3_isapnp_phys_addr[i][2])
497 printk("3c509 with address %02x %02x %02x %02x %02x %02x was found by ISAPnP\n",
498 phys_addr[0] & 0xff, phys_addr[0] >> 8,
499 phys_addr[1] & 0xff, phys_addr[1] >> 8,
500 phys_addr[2] & 0xff, phys_addr[2] >> 8);
501 /* Set the adaptor tag so that the next card can be found. */
502 outb(0xd0 + ++current_tag, id_port);
507 #endif /* __ISAPNP__ */
510 unsigned int iobase = id_read_eeprom(8);
511 if_port = iobase >> 14;
512 ioaddr = 0x200 + ((iobase & 0x1f) << 4);
514 irq = id_read_eeprom(9) >> 12;
516 dev = alloc_etherdev(sizeof (struct el3_private));
520 netdev_boot_setup_check(dev);
522 /* Set passed-in IRQ or I/O Addr. */
523 if (dev->irq > 1 && dev->irq < 16)
526 if (dev->base_addr) {
527 if (dev->mem_end == 0x3c509 /* Magic key */
528 && dev->base_addr >= 0x200 && dev->base_addr <= 0x3e0)
529 ioaddr = dev->base_addr & 0x3f0;
530 else if (dev->base_addr != ioaddr)
534 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509")) {
539 /* Set the adaptor tag so that the next card can be found. */
540 outb(0xd0 + ++current_tag, id_port);
542 /* Activate the adaptor at the EEPROM location. */
543 outb((ioaddr >> 4) | 0xe0, id_port);
546 if (inw(ioaddr) != 0x6d50)
549 /* Free the interrupt so that some other card can use it. */
550 outw(0x0f00, ioaddr + WN0_IRQ);
552 #if defined(__ISAPNP__)
553 found: /* PNP jumps here... */
554 #endif /* __ISAPNP__ */
556 memcpy(dev->dev_addr, phys_addr, sizeof(phys_addr));
557 dev->base_addr = ioaddr;
559 dev->if_port = if_port;
560 lp = netdev_priv(dev);
561 #if defined(__ISAPNP__)
562 lp->dev = &idev->dev;
564 err = el3_common_init(dev);
570 lp->next_dev = el3_root_dev;
575 #if defined(__ISAPNP__)
577 pnp_device_detach(idev);
585 static int __init el3_mca_probe(struct device *device)
587 /* Based on Erik Nygren's (nygren@mit.edu) 3c529 patch,
588 * heavily modified by Chris Beauregard
589 * (cpbeaure@csclub.uwaterloo.ca) to support standard MCA
592 * redone for multi-card detection by ZP Gu (zpg@castle.net)
593 * now works as a module */
595 struct el3_private *lp;
597 int ioaddr, irq, if_port;
599 struct net_device *dev = NULL;
601 struct mca_device *mdev = to_mca_device(device);
602 int slot = mdev->slot;
605 pos4 = mca_device_read_stored_pos(mdev, 4);
606 pos5 = mca_device_read_stored_pos(mdev, 5);
608 ioaddr = ((short)((pos4&0xfc)|0x02)) << 8;
612 printk("3c529: found %s at slot %d\n",
613 el3_mca_adapter_names[mdev->index], slot + 1);
616 strncpy(mdev->name, el3_mca_adapter_names[mdev->index],
618 mca_device_set_claim(mdev, 1);
620 if_port = pos4 & 0x03;
622 irq = mca_device_transform_irq(mdev, irq);
623 ioaddr = mca_device_transform_ioport(mdev, ioaddr);
625 printk("3c529: irq %d ioaddr 0x%x ifport %d\n", irq, ioaddr, if_port);
628 for (i = 0; i < 3; i++) {
629 phys_addr[i] = htons(read_eeprom(ioaddr, i));
632 dev = alloc_etherdev(sizeof (struct el3_private));
634 release_region(ioaddr, EL3_IO_EXTENT);
638 netdev_boot_setup_check(dev);
640 memcpy(dev->dev_addr, phys_addr, sizeof(phys_addr));
641 dev->base_addr = ioaddr;
643 dev->if_port = if_port;
644 lp = netdev_priv(dev);
647 device->driver_data = dev;
648 err = el3_common_init(dev);
651 device->driver_data = NULL;
660 #endif /* CONFIG_MCA */
663 static int __init el3_eisa_probe (struct device *device)
665 struct el3_private *lp;
667 int ioaddr, irq, if_port;
669 struct net_device *dev = NULL;
670 struct eisa_device *edev;
673 /* Yeepee, The driver framework is calling us ! */
674 edev = to_eisa_device (device);
675 ioaddr = edev->base_addr;
677 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509"))
680 /* Change the register set to the configuration window 0. */
681 outw(SelectWindow | 0, ioaddr + 0xC80 + EL3_CMD);
683 irq = inw(ioaddr + WN0_IRQ) >> 12;
684 if_port = inw(ioaddr + 6)>>14;
685 for (i = 0; i < 3; i++)
686 phys_addr[i] = htons(read_eeprom(ioaddr, i));
688 /* Restore the "Product ID" to the EEPROM read register. */
689 read_eeprom(ioaddr, 3);
691 dev = alloc_etherdev(sizeof (struct el3_private));
693 release_region(ioaddr, EL3_IO_EXTENT);
697 netdev_boot_setup_check(dev);
699 memcpy(dev->dev_addr, phys_addr, sizeof(phys_addr));
700 dev->base_addr = ioaddr;
702 dev->if_port = if_port;
703 lp = netdev_priv(dev);
706 eisa_set_drvdata (edev, dev);
707 err = el3_common_init(dev);
710 eisa_set_drvdata (edev, NULL);
720 #if defined(CONFIG_EISA) || defined(CONFIG_MCA)
721 /* This remove works for all device types.
723 * The net dev must be stored in the driver_data field */
724 static int __devexit el3_device_remove (struct device *device)
726 struct net_device *dev;
728 dev = device->driver_data;
730 el3_common_remove (dev);
735 /* Read a word from the EEPROM using the regular EEPROM access register.
736 Assume that we are in register window zero.
738 static ushort read_eeprom(int ioaddr, int index)
740 outw(EEPROM_READ + index, ioaddr + 10);
741 /* Pause for at least 162 us. for the read to take place.
742 Some chips seem to require much longer */
744 return inw(ioaddr + 12);
747 /* Read a word from the EEPROM when in the ISA ID probe state. */
748 static ushort __init id_read_eeprom(int index)
752 /* Issue read command, and pause for at least 162 us. for it to complete.
753 Assume extra-fast 16Mhz bus. */
754 outb(EEPROM_READ + index, id_port);
756 /* Pause for at least 162 us. for the read to take place. */
757 /* Some chips seem to require much longer */
760 for (bit = 15; bit >= 0; bit--)
761 word = (word << 1) + (inb(id_port) & 0x01);
764 printk(" 3c509 EEPROM word %d %#4.4x.\n", index, word);
771 el3_open(struct net_device *dev)
773 int ioaddr = dev->base_addr;
776 outw(TxReset, ioaddr + EL3_CMD);
777 outw(RxReset, ioaddr + EL3_CMD);
778 outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
780 i = request_irq(dev->irq, &el3_interrupt, 0, dev->name, dev);
786 printk("%s: Opening, IRQ %d status@%x %4.4x.\n", dev->name,
787 dev->irq, ioaddr + EL3_STATUS, inw(ioaddr + EL3_STATUS));
792 printk("%s: Opened 3c509 IRQ %d status %4.4x.\n",
793 dev->name, dev->irq, inw(ioaddr + EL3_STATUS));
799 el3_tx_timeout (struct net_device *dev)
801 struct el3_private *lp = netdev_priv(dev);
802 int ioaddr = dev->base_addr;
804 /* Transmitter timeout, serious problems. */
805 printk("%s: transmit timed out, Tx_status %2.2x status %4.4x "
806 "Tx FIFO room %d.\n",
807 dev->name, inb(ioaddr + TX_STATUS), inw(ioaddr + EL3_STATUS),
808 inw(ioaddr + TX_FREE));
809 lp->stats.tx_errors++;
810 dev->trans_start = jiffies;
811 /* Issue TX_RESET and TX_START commands. */
812 outw(TxReset, ioaddr + EL3_CMD);
813 outw(TxEnable, ioaddr + EL3_CMD);
814 netif_wake_queue(dev);
819 el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
821 struct el3_private *lp = netdev_priv(dev);
822 int ioaddr = dev->base_addr;
825 netif_stop_queue (dev);
827 lp->stats.tx_bytes += skb->len;
830 printk("%s: el3_start_xmit(length = %u) called, status %4.4x.\n",
831 dev->name, skb->len, inw(ioaddr + EL3_STATUS));
834 #ifndef final_version
835 { /* Error-checking code, delete someday. */
836 ushort status = inw(ioaddr + EL3_STATUS);
837 if (status & 0x0001 /* IRQ line active, missed one. */
838 && inw(ioaddr + EL3_STATUS) & 1) { /* Make sure. */
839 printk("%s: Missed interrupt, status then %04x now %04x"
840 " Tx %2.2x Rx %4.4x.\n", dev->name, status,
841 inw(ioaddr + EL3_STATUS), inb(ioaddr + TX_STATUS),
842 inw(ioaddr + RX_STATUS));
843 /* Fake interrupt trigger by masking, acknowledge interrupts. */
844 outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
845 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
847 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
853 * We lock the driver against other processors. Note
854 * we don't need to lock versus the IRQ as we suspended
855 * that. This means that we lose the ability to take
856 * an RX during a TX upload. That sucks a bit with SMP
857 * on an original 3c509 (2K buffer)
859 * Using disable_irq stops us crapping on other
860 * time sensitive devices.
863 spin_lock_irqsave(&lp->lock, flags);
865 /* Put out the doubleword header... */
866 outw(skb->len, ioaddr + TX_FIFO);
867 outw(0x00, ioaddr + TX_FIFO);
868 /* ... and the packet rounded to a doubleword. */
869 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
871 dev->trans_start = jiffies;
872 if (inw(ioaddr + TX_FREE) > 1536)
873 netif_start_queue(dev);
875 /* Interrupt us when the FIFO has room for max-sized packet. */
876 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
878 spin_unlock_irqrestore(&lp->lock, flags);
882 /* Clear the Tx status stack. */
887 while (--i > 0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
888 if (tx_status & 0x38) lp->stats.tx_aborted_errors++;
889 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
890 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
891 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
897 /* The EL3 interrupt handler. */
899 el3_interrupt(int irq, void *dev_id)
901 struct net_device *dev = dev_id;
902 struct el3_private *lp;
904 int i = max_interrupt_work;
906 lp = netdev_priv(dev);
907 spin_lock(&lp->lock);
909 ioaddr = dev->base_addr;
912 status = inw(ioaddr + EL3_STATUS);
913 printk("%s: interrupt, status %4.4x.\n", dev->name, status);
916 while ((status = inw(ioaddr + EL3_STATUS)) &
917 (IntLatch | RxComplete | StatsFull)) {
919 if (status & RxComplete)
922 if (status & TxAvailable) {
924 printk(" TX room bit was handled.\n");
925 /* There's room in the FIFO for a full-sized packet. */
926 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
927 netif_wake_queue (dev);
929 if (status & (AdapterFailure | RxEarly | StatsFull | TxComplete)) {
930 /* Handle all uncommon interrupts. */
931 if (status & StatsFull) /* Empty statistics. */
933 if (status & RxEarly) { /* Rx early is unused. */
935 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
937 if (status & TxComplete) { /* Really Tx error. */
938 struct el3_private *lp = netdev_priv(dev);
942 while (--i>0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
943 if (tx_status & 0x38) lp->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),
957 outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
958 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
963 printk("%s: Infinite loop in interrupt, status %4.4x.\n",
965 /* Clear all interrupts. */
966 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
969 /* Acknowledge the IRQ. */
970 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); /* Ack IRQ */
974 printk("%s: exiting interrupt, status %4.4x.\n", dev->name,
975 inw(ioaddr + EL3_STATUS));
977 spin_unlock(&lp->lock);
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);
995 static struct net_device_stats *
996 el3_get_stats(struct net_device *dev)
998 struct el3_private *lp = netdev_priv(dev);
1002 * This is fast enough not to bother with disable IRQ
1006 spin_lock_irqsave(&lp->lock, flags);
1008 spin_unlock_irqrestore(&lp->lock, flags);
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 struct el3_private *lp = netdev_priv(dev);
1020 int ioaddr = dev->base_addr;
1023 printk(" Updating the statistics.\n");
1024 /* Turn off statistics updates while reading. */
1025 outw(StatsDisable, ioaddr + EL3_CMD);
1026 /* Switch to the stats window, and read everything. */
1028 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
1029 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
1030 /* Multiple collisions. */ inb(ioaddr + 2);
1031 lp->stats.collisions += inb(ioaddr + 3);
1032 lp->stats.tx_window_errors += inb(ioaddr + 4);
1033 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
1034 lp->stats.tx_packets += inb(ioaddr + 6);
1035 /* Rx packets */ inb(ioaddr + 7);
1036 /* Tx deferrals */ inb(ioaddr + 8);
1037 inw(ioaddr + 10); /* Total Rx and Tx octets. */
1040 /* Back to window 1, and turn statistics back on. */
1042 outw(StatsEnable, ioaddr + EL3_CMD);
1047 el3_rx(struct net_device *dev)
1049 struct el3_private *lp = netdev_priv(dev);
1050 int ioaddr = dev->base_addr;
1054 printk(" In rx_packet(), status %4.4x, rx_status %4.4x.\n",
1055 inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
1056 while ((rx_status = inw(ioaddr + RX_STATUS)) > 0) {
1057 if (rx_status & 0x4000) { /* Error, update stats. */
1058 short error = rx_status & 0x3800;
1060 outw(RxDiscard, ioaddr + EL3_CMD);
1061 lp->stats.rx_errors++;
1063 case 0x0000: lp->stats.rx_over_errors++; break;
1064 case 0x0800: lp->stats.rx_length_errors++; break;
1065 case 0x1000: lp->stats.rx_frame_errors++; break;
1066 case 0x1800: lp->stats.rx_length_errors++; break;
1067 case 0x2000: lp->stats.rx_frame_errors++; break;
1068 case 0x2800: lp->stats.rx_crc_errors++; break;
1071 short pkt_len = rx_status & 0x7ff;
1072 struct sk_buff *skb;
1074 skb = dev_alloc_skb(pkt_len+5);
1075 lp->stats.rx_bytes += pkt_len;
1077 printk("Receiving packet size %d status %4.4x.\n",
1078 pkt_len, rx_status);
1080 skb_reserve(skb, 2); /* Align IP on 16 byte */
1082 /* 'skb->data' points to the start of sk_buff data area. */
1083 insl(ioaddr + RX_FIFO, skb_put(skb,pkt_len),
1084 (pkt_len + 3) >> 2);
1086 outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */
1087 skb->protocol = eth_type_trans(skb,dev);
1089 dev->last_rx = jiffies;
1090 lp->stats.rx_packets++;
1093 outw(RxDiscard, ioaddr + EL3_CMD);
1094 lp->stats.rx_dropped++;
1096 printk("%s: Couldn't allocate a sk_buff of size %d.\n",
1097 dev->name, pkt_len);
1099 inw(ioaddr + EL3_STATUS); /* Delay. */
1100 while (inw(ioaddr + EL3_STATUS) & 0x1000)
1101 printk(KERN_DEBUG " Waiting for 3c509 to discard packet, status %x.\n",
1102 inw(ioaddr + EL3_STATUS) );
1109 * Set or clear the multicast filter for this adaptor.
1112 set_multicast_list(struct net_device *dev)
1114 unsigned long flags;
1115 struct el3_private *lp = netdev_priv(dev);
1116 int ioaddr = dev->base_addr;
1118 if (el3_debug > 1) {
1120 if (old != dev->mc_count) {
1121 old = dev->mc_count;
1122 printk("%s: Setting Rx mode to %d addresses.\n", dev->name, dev->mc_count);
1125 spin_lock_irqsave(&lp->lock, flags);
1126 if (dev->flags&IFF_PROMISC) {
1127 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
1130 else if (dev->mc_count || (dev->flags&IFF_ALLMULTI)) {
1131 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast, ioaddr + EL3_CMD);
1134 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1135 spin_unlock_irqrestore(&lp->lock, flags);
1139 el3_close(struct net_device *dev)
1141 int ioaddr = dev->base_addr;
1142 struct el3_private *lp = netdev_priv(dev);
1145 printk("%s: Shutting down ethercard.\n", dev->name);
1149 free_irq(dev->irq, dev);
1150 /* Switching back to window 0 disables the IRQ. */
1152 if (lp->type != EL3_EISA) {
1153 /* But we explicitly zero the IRQ line select anyway. Don't do
1154 * it on EISA cards, it prevents the module from getting an
1155 * IRQ after unload+reload... */
1156 outw(0x0f00, ioaddr + WN0_IRQ);
1163 el3_link_ok(struct net_device *dev)
1165 int ioaddr = dev->base_addr;
1169 tmp = inw(ioaddr + WN4_MEDIA);
1171 return tmp & (1<<11);
1175 el3_netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
1178 int ioaddr = dev->base_addr;
1181 /* obtain current transceiver via WN4_MEDIA? */
1182 tmp = inw(ioaddr + WN0_ADDR_CONF);
1183 ecmd->transceiver = XCVR_INTERNAL;
1184 switch (tmp >> 14) {
1186 ecmd->port = PORT_TP;
1189 ecmd->port = PORT_AUI;
1190 ecmd->transceiver = XCVR_EXTERNAL;
1193 ecmd->port = PORT_BNC;
1198 ecmd->duplex = DUPLEX_HALF;
1199 ecmd->supported = 0;
1200 tmp = inw(ioaddr + WN0_CONF_CTRL);
1202 ecmd->supported |= SUPPORTED_AUI;
1204 ecmd->supported |= SUPPORTED_BNC;
1206 ecmd->supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half |
1207 SUPPORTED_10baseT_Full; /* hmm... */
1209 tmp = inw(ioaddr + WN4_NETDIAG);
1210 if (tmp & FD_ENABLE)
1211 ecmd->duplex = DUPLEX_FULL;
1214 ecmd->speed = SPEED_10;
1220 el3_netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
1223 int ioaddr = dev->base_addr;
1225 if (ecmd->speed != SPEED_10)
1227 if ((ecmd->duplex != DUPLEX_HALF) && (ecmd->duplex != DUPLEX_FULL))
1229 if ((ecmd->transceiver != XCVR_INTERNAL) && (ecmd->transceiver != XCVR_EXTERNAL))
1232 /* change XCVR type */
1234 tmp = inw(ioaddr + WN0_ADDR_CONF);
1235 switch (ecmd->port) {
1252 outw(tmp, ioaddr + WN0_ADDR_CONF);
1253 if (dev->if_port == 3) {
1254 /* fire up the DC-DC convertor if BNC gets enabled */
1255 tmp = inw(ioaddr + WN0_ADDR_CONF);
1256 if (tmp & (3 << 14)) {
1257 outw(StartCoax, ioaddr + EL3_CMD);
1264 tmp = inw(ioaddr + WN4_NETDIAG);
1265 if (ecmd->duplex == DUPLEX_FULL)
1269 outw(tmp, ioaddr + WN4_NETDIAG);
1275 static void el3_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1277 strcpy(info->driver, DRV_NAME);
1278 strcpy(info->version, DRV_VERSION);
1281 static int el3_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1283 struct el3_private *lp = netdev_priv(dev);
1286 spin_lock_irq(&lp->lock);
1287 ret = el3_netdev_get_ecmd(dev, ecmd);
1288 spin_unlock_irq(&lp->lock);
1292 static int el3_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1294 struct el3_private *lp = netdev_priv(dev);
1297 spin_lock_irq(&lp->lock);
1298 ret = el3_netdev_set_ecmd(dev, ecmd);
1299 spin_unlock_irq(&lp->lock);
1303 static u32 el3_get_link(struct net_device *dev)
1305 struct el3_private *lp = netdev_priv(dev);
1308 spin_lock_irq(&lp->lock);
1309 ret = el3_link_ok(dev);
1310 spin_unlock_irq(&lp->lock);
1314 static u32 el3_get_msglevel(struct net_device *dev)
1319 static void el3_set_msglevel(struct net_device *dev, u32 v)
1324 static const struct ethtool_ops ethtool_ops = {
1325 .get_drvinfo = el3_get_drvinfo,
1326 .get_settings = el3_get_settings,
1327 .set_settings = el3_set_settings,
1328 .get_link = el3_get_link,
1329 .get_msglevel = el3_get_msglevel,
1330 .set_msglevel = el3_set_msglevel,
1334 el3_down(struct net_device *dev)
1336 int ioaddr = dev->base_addr;
1338 netif_stop_queue(dev);
1340 /* Turn off statistics ASAP. We update lp->stats below. */
1341 outw(StatsDisable, ioaddr + EL3_CMD);
1343 /* Disable the receiver and transmitter. */
1344 outw(RxDisable, ioaddr + EL3_CMD);
1345 outw(TxDisable, ioaddr + EL3_CMD);
1347 if (dev->if_port == 3)
1348 /* Turn off thinnet power. Green! */
1349 outw(StopCoax, ioaddr + EL3_CMD);
1350 else if (dev->if_port == 0) {
1351 /* Disable link beat and jabber, if_port may change here next open(). */
1353 outw(inw(ioaddr + WN4_MEDIA) & ~MEDIA_TP, ioaddr + WN4_MEDIA);
1356 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1362 el3_up(struct net_device *dev)
1364 int i, sw_info, net_diag;
1365 int ioaddr = dev->base_addr;
1367 /* Activating the board required and does no harm otherwise */
1368 outw(0x0001, ioaddr + 4);
1370 /* Set the IRQ line. */
1371 outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ);
1373 /* Set the station address in window 2 each time opened. */
1376 for (i = 0; i < 6; i++)
1377 outb(dev->dev_addr[i], ioaddr + i);
1379 if ((dev->if_port & 0x03) == 3) /* BNC interface */
1380 /* Start the thinnet transceiver. We should really wait 50ms...*/
1381 outw(StartCoax, ioaddr + EL3_CMD);
1382 else if ((dev->if_port & 0x03) == 0) { /* 10baseT interface */
1383 /* Combine secondary sw_info word (the adapter level) and primary
1384 sw_info word (duplex setting plus other useless bits) */
1386 sw_info = (read_eeprom(ioaddr, 0x14) & 0x400f) |
1387 (read_eeprom(ioaddr, 0x0d) & 0xBff0);
1390 net_diag = inw(ioaddr + WN4_NETDIAG);
1391 net_diag = (net_diag | FD_ENABLE); /* temporarily assume full-duplex will be set */
1392 printk("%s: ", dev->name);
1393 switch (dev->if_port & 0x0c) {
1395 /* force full-duplex mode if 3c5x9b */
1396 if (sw_info & 0x000f) {
1397 printk("Forcing 3c5x9b full-duplex mode");
1401 /* set full-duplex mode based on eeprom config setting */
1402 if ((sw_info & 0x000f) && (sw_info & 0x8000)) {
1403 printk("Setting 3c5x9b full-duplex mode (from EEPROM configuration bit)");
1407 /* xcvr=(0 || 4) OR user has an old 3c5x9 non "B" model */
1408 printk("Setting 3c5x9/3c5x9B half-duplex mode");
1409 net_diag = (net_diag & ~FD_ENABLE); /* disable full duplex */
1412 outw(net_diag, ioaddr + WN4_NETDIAG);
1413 printk(" if_port: %d, sw_info: %4.4x\n", dev->if_port, sw_info);
1415 printk("%s: 3c5x9 net diag word is now: %4.4x.\n", dev->name, net_diag);
1416 /* Enable link beat and jabber check. */
1417 outw(inw(ioaddr + WN4_MEDIA) | MEDIA_TP, ioaddr + WN4_MEDIA);
1420 /* Switch to the stats window, and clear all stats by reading. */
1421 outw(StatsDisable, ioaddr + EL3_CMD);
1423 for (i = 0; i < 9; i++)
1428 /* Switch to register set 1 for normal use. */
1431 /* Accept b-case and phys addr only. */
1432 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1433 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
1435 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
1436 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
1437 /* Allow status bits to be seen. */
1438 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
1439 /* Ack all pending events, and set active indicator mask. */
1440 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
1442 outw(SetIntrEnb | IntLatch|TxAvailable|TxComplete|RxComplete|StatsFull,
1445 netif_start_queue(dev);
1448 /* Power Management support functions */
1452 el3_suspend(struct device *pdev, pm_message_t state)
1454 unsigned long flags;
1455 struct net_device *dev;
1456 struct el3_private *lp;
1459 dev = pdev->driver_data;
1460 lp = netdev_priv(dev);
1461 ioaddr = dev->base_addr;
1463 spin_lock_irqsave(&lp->lock, flags);
1465 if (netif_running(dev))
1466 netif_device_detach(dev);
1469 outw(PowerDown, ioaddr + EL3_CMD);
1471 spin_unlock_irqrestore(&lp->lock, flags);
1476 el3_resume(struct device *pdev)
1478 unsigned long flags;
1479 struct net_device *dev;
1480 struct el3_private *lp;
1483 dev = pdev->driver_data;
1484 lp = netdev_priv(dev);
1485 ioaddr = dev->base_addr;
1487 spin_lock_irqsave(&lp->lock, flags);
1489 outw(PowerUp, ioaddr + EL3_CMD);
1492 if (netif_running(dev))
1493 netif_device_attach(dev);
1495 spin_unlock_irqrestore(&lp->lock, flags);
1499 #endif /* EL3_SUSPEND */
1501 /* Parameters that may be passed into the module. */
1502 static int debug = -1;
1503 static int irq[] = {-1, -1, -1, -1, -1, -1, -1, -1};
1504 static int xcvr[] = {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1};
1506 module_param(debug,int, 0);
1507 module_param_array(irq, int, NULL, 0);
1508 module_param_array(xcvr, int, NULL, 0);
1509 module_param(max_interrupt_work, int, 0);
1510 MODULE_PARM_DESC(debug, "debug level (0-6)");
1511 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
1512 MODULE_PARM_DESC(xcvr,"transceiver(s) (0=internal, 1=external)");
1513 MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt");
1514 #if defined(__ISAPNP__)
1515 module_param(nopnp, int, 0);
1516 MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)");
1517 MODULE_DEVICE_TABLE(isapnp, el3_isapnp_adapters);
1518 #endif /* __ISAPNP__ */
1519 MODULE_DESCRIPTION("3Com Etherlink III (3c509, 3c509B) ISA/PnP ethernet driver");
1520 MODULE_LICENSE("GPL");
1522 static int __init el3_init_module(void)
1530 el3_root_dev = NULL;
1531 while (el3_probe(el3_cards) == 0) {
1532 if (irq[el3_cards] > 1)
1533 el3_root_dev->irq = irq[el3_cards];
1534 if (xcvr[el3_cards] >= 0)
1535 el3_root_dev->if_port = xcvr[el3_cards];
1540 ret = eisa_driver_register(&el3_eisa_driver);
1544 int err = mca_register_driver(&el3_mca_driver);
1552 static void __exit el3_cleanup_module(void)
1554 struct net_device *next_dev;
1556 while (el3_root_dev) {
1557 struct el3_private *lp = netdev_priv(el3_root_dev);
1559 next_dev = lp->next_dev;
1560 el3_common_remove (el3_root_dev);
1561 el3_root_dev = next_dev;
1565 eisa_driver_unregister (&el3_eisa_driver);
1568 mca_unregister_driver(&el3_mca_driver);
1572 module_init (el3_init_module);
1573 module_exit (el3_cleanup_module);