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
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.
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>
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>
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>
97 static char version[] __devinitdata = DRV_NAME ".c:" DRV_VERSION " " DRV_RELDATE " becker@scyld.com\n";
100 static int el3_debug = EL3_DEBUG;
102 static int el3_debug = 2;
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
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
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. */
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};
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: */
144 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 };
146 /* Register window 1 offsets, the window used in normal operation. */
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
165 #define SKB_QUEUE_SIZE 64
167 enum el3_cardtype { EL3_ISA, EL3_PNP, EL3_MCA, EL3_EISA };
173 struct sk_buff *queue[SKB_QUEUE_SIZE];
174 enum el3_cardtype type;
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;
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 int 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;
206 static int el3_suspend(struct device *, pm_message_t);
207 static int el3_resume(struct device *);
209 #define el3_suspend NULL
210 #define el3_resume NULL
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);
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;
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. */
233 for (i = 0; i < 255; i++) {
234 outb(lrs_state, id_port);
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)
241 else /* Otherwise kill off already-found boards. */
243 if (id_read_eeprom(7) != 0x6d50)
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));
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,
260 printk(KERN_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);
270 #endif /* CONFIG_PNP */
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;
284 dev->if_port = if_port;
288 static int __devinit el3_isa_match(struct device *pdev,
291 struct net_device *dev;
292 int ioaddr, isa_irq, if_port, err;
296 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
297 ; /* Skip to next card when PnP card found */
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];
307 isa_irq = id_read_eeprom(9) >> 12;
309 dev = alloc_etherdev(sizeof(struct el3_private));
313 netdev_boot_setup_check(dev);
315 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-isa")) {
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);
327 if (inw(ioaddr) != 0x6d50) {
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)) {
342 el3_devs[el3_cards++] = dev;
346 static int __devexit el3_isa_remove(struct device *pdev,
349 el3_device_remove(pdev);
350 dev_set_drvdata(pdev, NULL);
355 static int el3_isa_suspend(struct device *dev, unsigned int n,
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;
368 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
369 ; /* Skip to next card when PnP card found */
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);
377 if (inw(ioaddr) != 0x6d50)
379 /* Free the interrupt so that some other card can use it. */
380 outw(0x0f00, ioaddr + WN0_IRQ);
381 return el3_resume(dev);
385 static struct isa_driver el3_isa_driver = {
386 .match = el3_isa_match,
387 .remove = __devexit_p(el3_isa_remove),
389 .suspend = el3_isa_suspend,
390 .resume = el3_isa_resume,
396 static int isa_registered;
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 */
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)
415 int ioaddr, irq, if_port;
417 struct net_device *dev = NULL;
420 ioaddr = pnp_port_start(pdev, 0);
421 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-pnp"))
423 irq = pnp_irq(pdev, 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));
430 release_region(ioaddr, EL3_IO_EXTENT);
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);
441 pnp_set_drvdata(pdev, NULL);
446 el3_devs[el3_cards++] = dev;
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);
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);
468 static struct pnp_driver el3_pnp_driver = {
470 .id_table = el3_pnp_ids,
471 .probe = el3_pnp_probe,
472 .remove = __devexit_p(el3_pnp_remove),
474 .suspend = el3_pnp_suspend,
475 .resume = el3_pnp_resume,
478 static int pnp_registered;
479 #endif /* CONFIG_PNP */
482 static struct eisa_device_id el3_eisa_ids[] = {
488 MODULE_DEVICE_TABLE(eisa, el3_eisa_ids);
490 static int el3_eisa_probe (struct device *device);
492 static struct eisa_driver el3_eisa_driver = {
493 .id_table = el3_eisa_ids,
496 .probe = el3_eisa_probe,
497 .remove = __devexit_p (el3_device_remove),
498 .suspend = el3_suspend,
499 .resume = el3_resume,
502 static int eisa_registered;
506 static int el3_mca_probe(struct device *dev);
508 static short el3_mca_adapter_ids[] __initdata = {
517 static char *el3_mca_adapter_names[] __initdata = {
518 "3Com 3c529 EtherLink III (10base2)",
519 "3Com 3c529 EtherLink III (10baseT)",
520 "3Com 3c529 EtherLink III (test mode)",
521 "3Com 3c529 EtherLink III (TP or coax)",
522 "3Com 3c529 EtherLink III (TP)",
526 static struct mca_driver el3_mca_driver = {
527 .id_table = el3_mca_adapter_ids,
530 .bus = &mca_bus_type,
531 .probe = el3_mca_probe,
532 .remove = __devexit_p(el3_device_remove),
533 .suspend = el3_suspend,
534 .resume = el3_resume,
537 static int mca_registered;
538 #endif /* CONFIG_MCA */
540 static const struct net_device_ops netdev_ops = {
541 .ndo_open = el3_open,
542 .ndo_stop = el3_close,
543 .ndo_start_xmit = el3_start_xmit,
544 .ndo_get_stats = el3_get_stats,
545 .ndo_set_multicast_list = set_multicast_list,
546 .ndo_tx_timeout = el3_tx_timeout,
547 .ndo_change_mtu = eth_change_mtu,
548 .ndo_set_mac_address = eth_mac_addr,
549 .ndo_validate_addr = eth_validate_addr,
550 #ifdef CONFIG_NET_POLL_CONTROLLER
551 .ndo_poll_controller = el3_poll_controller,
555 static int __devinit el3_common_init(struct net_device *dev)
557 struct el3_private *lp = netdev_priv(dev);
559 const char *if_names[] = {"10baseT", "AUI", "undefined", "BNC"};
561 spin_lock_init(&lp->lock);
563 if (dev->mem_start & 0x05) { /* xcvr codes 1/3/4/12 */
564 dev->if_port = (dev->mem_start & 0x0f);
565 } else { /* xcvr codes 0/8 */
566 /* use eeprom value, but save user's full-duplex selection */
567 dev->if_port |= (dev->mem_start & 0x08);
570 /* The EL3-specific entries in the device structure. */
571 dev->netdev_ops = &netdev_ops;
572 dev->watchdog_timeo = TX_TIMEOUT;
573 SET_ETHTOOL_OPS(dev, ðtool_ops);
575 err = register_netdev(dev);
577 printk(KERN_ERR "Failed to register 3c5x9 at %#3.3lx, IRQ %d.\n",
578 dev->base_addr, dev->irq);
579 release_region(dev->base_addr, EL3_IO_EXTENT);
583 printk(KERN_INFO "%s: 3c5x9 found at %#3.3lx, %s port, "
584 "address %pM, IRQ %d.\n",
585 dev->name, dev->base_addr, if_names[(dev->if_port & 0x03)],
586 dev->dev_addr, dev->irq);
589 printk(KERN_INFO "%s", version);
594 static void el3_common_remove (struct net_device *dev)
596 unregister_netdev (dev);
597 release_region(dev->base_addr, EL3_IO_EXTENT);
602 static int __init el3_mca_probe(struct device *device)
604 /* Based on Erik Nygren's (nygren@mit.edu) 3c529 patch,
605 * heavily modified by Chris Beauregard
606 * (cpbeaure@csclub.uwaterloo.ca) to support standard MCA
609 * redone for multi-card detection by ZP Gu (zpg@castle.net)
610 * now works as a module */
613 int ioaddr, irq, if_port;
615 struct net_device *dev = NULL;
617 struct mca_device *mdev = to_mca_device(device);
618 int slot = mdev->slot;
621 pos4 = mca_device_read_stored_pos(mdev, 4);
622 pos5 = mca_device_read_stored_pos(mdev, 5);
624 ioaddr = ((short)((pos4&0xfc)|0x02)) << 8;
628 printk(KERN_INFO "3c529: found %s at slot %d\n",
629 el3_mca_adapter_names[mdev->index], slot + 1);
632 strncpy(mdev->name, el3_mca_adapter_names[mdev->index],
634 mca_device_set_claim(mdev, 1);
636 if_port = pos4 & 0x03;
638 irq = mca_device_transform_irq(mdev, irq);
639 ioaddr = mca_device_transform_ioport(mdev, ioaddr);
641 printk(KERN_DEBUG "3c529: irq %d ioaddr 0x%x ifport %d\n", irq, ioaddr, if_port);
644 for (i = 0; i < 3; i++)
645 phys_addr[i] = htons(read_eeprom(ioaddr, i));
647 dev = alloc_etherdev(sizeof (struct el3_private));
649 release_region(ioaddr, EL3_IO_EXTENT);
653 netdev_boot_setup_check(dev);
655 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_MCA);
656 device->driver_data = dev;
657 err = el3_common_init(dev);
660 device->driver_data = NULL;
665 el3_devs[el3_cards++] = dev;
669 #endif /* CONFIG_MCA */
672 static int __init el3_eisa_probe (struct device *device)
675 int ioaddr, irq, if_port;
677 struct net_device *dev = NULL;
678 struct eisa_device *edev;
681 /* Yeepee, The driver framework is calling us ! */
682 edev = to_eisa_device (device);
683 ioaddr = edev->base_addr;
685 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c579-eisa"))
688 /* Change the register set to the configuration window 0. */
689 outw(SelectWindow | 0, ioaddr + 0xC80 + EL3_CMD);
691 irq = inw(ioaddr + WN0_IRQ) >> 12;
692 if_port = inw(ioaddr + 6)>>14;
693 for (i = 0; i < 3; i++)
694 phys_addr[i] = htons(read_eeprom(ioaddr, i));
696 /* Restore the "Product ID" to the EEPROM read register. */
697 read_eeprom(ioaddr, 3);
699 dev = alloc_etherdev(sizeof (struct el3_private));
701 release_region(ioaddr, EL3_IO_EXTENT);
705 netdev_boot_setup_check(dev);
707 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_EISA);
708 eisa_set_drvdata (edev, dev);
709 err = el3_common_init(dev);
712 eisa_set_drvdata (edev, NULL);
717 el3_devs[el3_cards++] = dev;
722 /* This remove works for all device types.
724 * The net dev must be stored in the driver_data field */
725 static int __devexit el3_device_remove (struct device *device)
727 struct net_device *dev;
729 dev = device->driver_data;
731 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 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(KERN_DEBUG " 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(KERN_DEBUG "%s: Opening, IRQ %d status@%x %4.4x.\n", dev->name,
787 dev->irq, ioaddr + EL3_STATUS, inw(ioaddr + EL3_STATUS));
792 printk(KERN_DEBUG "%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 int ioaddr = dev->base_addr;
803 /* Transmitter timeout, serious problems. */
804 printk(KERN_WARNING "%s: transmit timed out, Tx_status %2.2x status %4.4x "
805 "Tx FIFO room %d.\n",
806 dev->name, inb(ioaddr + TX_STATUS), inw(ioaddr + EL3_STATUS),
807 inw(ioaddr + TX_FREE));
808 dev->stats.tx_errors++;
809 dev->trans_start = jiffies;
810 /* Issue TX_RESET and TX_START commands. */
811 outw(TxReset, ioaddr + EL3_CMD);
812 outw(TxEnable, ioaddr + EL3_CMD);
813 netif_wake_queue(dev);
818 el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
820 struct el3_private *lp = netdev_priv(dev);
821 int ioaddr = dev->base_addr;
824 netif_stop_queue (dev);
826 dev->stats.tx_bytes += skb->len;
829 printk(KERN_DEBUG "%s: el3_start_xmit(length = %u) called, status %4.4x.\n",
830 dev->name, skb->len, inw(ioaddr + EL3_STATUS));
833 #ifndef final_version
834 { /* Error-checking code, delete someday. */
835 ushort status = inw(ioaddr + EL3_STATUS);
836 if (status & 0x0001 /* IRQ line active, missed one. */
837 && inw(ioaddr + EL3_STATUS) & 1) { /* Make sure. */
838 printk(KERN_DEBUG "%s: Missed interrupt, status then %04x now %04x"
839 " Tx %2.2x Rx %4.4x.\n", dev->name, status,
840 inw(ioaddr + EL3_STATUS), inb(ioaddr + TX_STATUS),
841 inw(ioaddr + RX_STATUS));
842 /* Fake interrupt trigger by masking, acknowledge interrupts. */
843 outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
844 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
846 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
852 * We lock the driver against other processors. Note
853 * we don't need to lock versus the IRQ as we suspended
854 * that. This means that we lose the ability to take
855 * an RX during a TX upload. That sucks a bit with SMP
856 * on an original 3c509 (2K buffer)
858 * Using disable_irq stops us crapping on other
859 * time sensitive devices.
862 spin_lock_irqsave(&lp->lock, flags);
864 /* Put out the doubleword header... */
865 outw(skb->len, ioaddr + TX_FIFO);
866 outw(0x00, ioaddr + TX_FIFO);
867 /* ... and the packet rounded to a doubleword. */
868 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
870 dev->trans_start = jiffies;
871 if (inw(ioaddr + TX_FREE) > 1536)
872 netif_start_queue(dev);
874 /* Interrupt us when the FIFO has room for max-sized packet. */
875 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
877 spin_unlock_irqrestore(&lp->lock, flags);
881 /* Clear the Tx status stack. */
886 while (--i > 0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
887 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
888 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
889 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
890 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
896 /* The EL3 interrupt handler. */
898 el3_interrupt(int irq, void *dev_id)
900 struct net_device *dev = dev_id;
901 struct el3_private *lp;
903 int i = max_interrupt_work;
905 lp = netdev_priv(dev);
906 spin_lock(&lp->lock);
908 ioaddr = dev->base_addr;
911 status = inw(ioaddr + EL3_STATUS);
912 printk(KERN_DEBUG "%s: interrupt, status %4.4x.\n", dev->name, status);
915 while ((status = inw(ioaddr + EL3_STATUS)) &
916 (IntLatch | RxComplete | StatsFull)) {
918 if (status & RxComplete)
921 if (status & TxAvailable) {
923 printk(KERN_DEBUG " TX room bit was handled.\n");
924 /* There's room in the FIFO for a full-sized packet. */
925 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
926 netif_wake_queue (dev);
928 if (status & (AdapterFailure | RxEarly | StatsFull | TxComplete)) {
929 /* Handle all uncommon interrupts. */
930 if (status & StatsFull) /* Empty statistics. */
932 if (status & RxEarly) { /* Rx early is unused. */
934 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
936 if (status & TxComplete) { /* Really Tx error. */
940 while (--i>0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
941 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
942 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
943 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
944 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
947 if (status & AdapterFailure) {
948 /* Adapter failure requires Rx reset and reinit. */
949 outw(RxReset, ioaddr + EL3_CMD);
950 /* Set the Rx filter to the current state. */
951 outw(SetRxFilter | RxStation | RxBroadcast
952 | (dev->flags & IFF_ALLMULTI ? RxMulticast : 0)
953 | (dev->flags & IFF_PROMISC ? RxProm : 0),
955 outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
956 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
961 printk(KERN_ERR "%s: Infinite loop in interrupt, status %4.4x.\n",
963 /* Clear all interrupts. */
964 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
967 /* Acknowledge the IRQ. */
968 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); /* Ack IRQ */
972 printk(KERN_DEBUG "%s: exiting interrupt, status %4.4x.\n", dev->name,
973 inw(ioaddr + EL3_STATUS));
975 spin_unlock(&lp->lock);
980 #ifdef CONFIG_NET_POLL_CONTROLLER
982 * Polling receive - used by netconsole and other diagnostic tools
983 * to allow network i/o with interrupts disabled.
985 static void el3_poll_controller(struct net_device *dev)
987 disable_irq(dev->irq);
988 el3_interrupt(dev->irq, dev);
989 enable_irq(dev->irq);
993 static struct net_device_stats *
994 el3_get_stats(struct net_device *dev)
996 struct el3_private *lp = netdev_priv(dev);
1000 * This is fast enough not to bother with disable IRQ
1004 spin_lock_irqsave(&lp->lock, flags);
1006 spin_unlock_irqrestore(&lp->lock, flags);
1010 /* Update statistics. We change to register window 6, so this should be run
1011 single-threaded if the device is active. This is expected to be a rare
1012 operation, and it's simpler for the rest of the driver to assume that
1013 window 1 is always valid rather than use a special window-state variable.
1015 static void update_stats(struct net_device *dev)
1017 int ioaddr = dev->base_addr;
1020 printk(" Updating the statistics.\n");
1021 /* Turn off statistics updates while reading. */
1022 outw(StatsDisable, ioaddr + EL3_CMD);
1023 /* Switch to the stats window, and read everything. */
1025 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
1026 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
1027 /* Multiple collisions. */ inb(ioaddr + 2);
1028 dev->stats.collisions += inb(ioaddr + 3);
1029 dev->stats.tx_window_errors += inb(ioaddr + 4);
1030 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
1031 dev->stats.tx_packets += inb(ioaddr + 6);
1032 /* Rx packets */ inb(ioaddr + 7);
1033 /* Tx deferrals */ inb(ioaddr + 8);
1034 inw(ioaddr + 10); /* Total Rx and Tx octets. */
1037 /* Back to window 1, and turn statistics back on. */
1039 outw(StatsEnable, ioaddr + EL3_CMD);
1044 el3_rx(struct net_device *dev)
1046 int ioaddr = dev->base_addr;
1050 printk(" In rx_packet(), status %4.4x, rx_status %4.4x.\n",
1051 inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
1052 while ((rx_status = inw(ioaddr + RX_STATUS)) > 0) {
1053 if (rx_status & 0x4000) { /* Error, update stats. */
1054 short error = rx_status & 0x3800;
1056 outw(RxDiscard, ioaddr + EL3_CMD);
1057 dev->stats.rx_errors++;
1059 case 0x0000: dev->stats.rx_over_errors++; break;
1060 case 0x0800: dev->stats.rx_length_errors++; break;
1061 case 0x1000: dev->stats.rx_frame_errors++; break;
1062 case 0x1800: dev->stats.rx_length_errors++; break;
1063 case 0x2000: dev->stats.rx_frame_errors++; break;
1064 case 0x2800: dev->stats.rx_crc_errors++; break;
1067 short pkt_len = rx_status & 0x7ff;
1068 struct sk_buff *skb;
1070 skb = dev_alloc_skb(pkt_len+5);
1072 printk("Receiving packet size %d status %4.4x.\n",
1073 pkt_len, rx_status);
1075 skb_reserve(skb, 2); /* Align IP on 16 byte */
1077 /* 'skb->data' points to the start of sk_buff data area. */
1078 insl(ioaddr + RX_FIFO, skb_put(skb,pkt_len),
1079 (pkt_len + 3) >> 2);
1081 outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */
1082 skb->protocol = eth_type_trans(skb,dev);
1084 dev->stats.rx_bytes += pkt_len;
1085 dev->stats.rx_packets++;
1088 outw(RxDiscard, ioaddr + EL3_CMD);
1089 dev->stats.rx_dropped++;
1091 printk("%s: Couldn't allocate a sk_buff of size %d.\n",
1092 dev->name, pkt_len);
1094 inw(ioaddr + EL3_STATUS); /* Delay. */
1095 while (inw(ioaddr + EL3_STATUS) & 0x1000)
1096 printk(KERN_DEBUG " Waiting for 3c509 to discard packet, status %x.\n",
1097 inw(ioaddr + EL3_STATUS) );
1104 * Set or clear the multicast filter for this adaptor.
1107 set_multicast_list(struct net_device *dev)
1109 unsigned long flags;
1110 struct el3_private *lp = netdev_priv(dev);
1111 int ioaddr = dev->base_addr;
1113 if (el3_debug > 1) {
1115 if (old != dev->mc_count) {
1116 old = dev->mc_count;
1117 printk("%s: Setting Rx mode to %d addresses.\n", dev->name, dev->mc_count);
1120 spin_lock_irqsave(&lp->lock, flags);
1121 if (dev->flags&IFF_PROMISC) {
1122 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
1125 else if (dev->mc_count || (dev->flags&IFF_ALLMULTI)) {
1126 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast, ioaddr + EL3_CMD);
1129 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1130 spin_unlock_irqrestore(&lp->lock, flags);
1134 el3_close(struct net_device *dev)
1136 int ioaddr = dev->base_addr;
1137 struct el3_private *lp = netdev_priv(dev);
1140 printk("%s: Shutting down ethercard.\n", dev->name);
1144 free_irq(dev->irq, dev);
1145 /* Switching back to window 0 disables the IRQ. */
1147 if (lp->type != EL3_EISA) {
1148 /* But we explicitly zero the IRQ line select anyway. Don't do
1149 * it on EISA cards, it prevents the module from getting an
1150 * IRQ after unload+reload... */
1151 outw(0x0f00, ioaddr + WN0_IRQ);
1158 el3_link_ok(struct net_device *dev)
1160 int ioaddr = dev->base_addr;
1164 tmp = inw(ioaddr + WN4_MEDIA);
1166 return tmp & (1<<11);
1170 el3_netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
1173 int ioaddr = dev->base_addr;
1176 /* obtain current transceiver via WN4_MEDIA? */
1177 tmp = inw(ioaddr + WN0_ADDR_CONF);
1178 ecmd->transceiver = XCVR_INTERNAL;
1179 switch (tmp >> 14) {
1181 ecmd->port = PORT_TP;
1184 ecmd->port = PORT_AUI;
1185 ecmd->transceiver = XCVR_EXTERNAL;
1188 ecmd->port = PORT_BNC;
1193 ecmd->duplex = DUPLEX_HALF;
1194 ecmd->supported = 0;
1195 tmp = inw(ioaddr + WN0_CONF_CTRL);
1197 ecmd->supported |= SUPPORTED_AUI;
1199 ecmd->supported |= SUPPORTED_BNC;
1201 ecmd->supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half |
1202 SUPPORTED_10baseT_Full; /* hmm... */
1204 tmp = inw(ioaddr + WN4_NETDIAG);
1205 if (tmp & FD_ENABLE)
1206 ecmd->duplex = DUPLEX_FULL;
1209 ecmd->speed = SPEED_10;
1215 el3_netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
1218 int ioaddr = dev->base_addr;
1220 if (ecmd->speed != SPEED_10)
1222 if ((ecmd->duplex != DUPLEX_HALF) && (ecmd->duplex != DUPLEX_FULL))
1224 if ((ecmd->transceiver != XCVR_INTERNAL) && (ecmd->transceiver != XCVR_EXTERNAL))
1227 /* change XCVR type */
1229 tmp = inw(ioaddr + WN0_ADDR_CONF);
1230 switch (ecmd->port) {
1247 outw(tmp, ioaddr + WN0_ADDR_CONF);
1248 if (dev->if_port == 3) {
1249 /* fire up the DC-DC convertor if BNC gets enabled */
1250 tmp = inw(ioaddr + WN0_ADDR_CONF);
1251 if (tmp & (3 << 14)) {
1252 outw(StartCoax, ioaddr + EL3_CMD);
1259 tmp = inw(ioaddr + WN4_NETDIAG);
1260 if (ecmd->duplex == DUPLEX_FULL)
1264 outw(tmp, ioaddr + WN4_NETDIAG);
1270 static void el3_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1272 strcpy(info->driver, DRV_NAME);
1273 strcpy(info->version, DRV_VERSION);
1276 static int el3_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1278 struct el3_private *lp = netdev_priv(dev);
1281 spin_lock_irq(&lp->lock);
1282 ret = el3_netdev_get_ecmd(dev, ecmd);
1283 spin_unlock_irq(&lp->lock);
1287 static int el3_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
1289 struct el3_private *lp = netdev_priv(dev);
1292 spin_lock_irq(&lp->lock);
1293 ret = el3_netdev_set_ecmd(dev, ecmd);
1294 spin_unlock_irq(&lp->lock);
1298 static u32 el3_get_link(struct net_device *dev)
1300 struct el3_private *lp = netdev_priv(dev);
1303 spin_lock_irq(&lp->lock);
1304 ret = el3_link_ok(dev);
1305 spin_unlock_irq(&lp->lock);
1309 static u32 el3_get_msglevel(struct net_device *dev)
1314 static void el3_set_msglevel(struct net_device *dev, u32 v)
1319 static const struct ethtool_ops ethtool_ops = {
1320 .get_drvinfo = el3_get_drvinfo,
1321 .get_settings = el3_get_settings,
1322 .set_settings = el3_set_settings,
1323 .get_link = el3_get_link,
1324 .get_msglevel = el3_get_msglevel,
1325 .set_msglevel = el3_set_msglevel,
1329 el3_down(struct net_device *dev)
1331 int ioaddr = dev->base_addr;
1333 netif_stop_queue(dev);
1335 /* Turn off statistics ASAP. We update lp->stats below. */
1336 outw(StatsDisable, ioaddr + EL3_CMD);
1338 /* Disable the receiver and transmitter. */
1339 outw(RxDisable, ioaddr + EL3_CMD);
1340 outw(TxDisable, ioaddr + EL3_CMD);
1342 if (dev->if_port == 3)
1343 /* Turn off thinnet power. Green! */
1344 outw(StopCoax, ioaddr + EL3_CMD);
1345 else if (dev->if_port == 0) {
1346 /* Disable link beat and jabber, if_port may change here next open(). */
1348 outw(inw(ioaddr + WN4_MEDIA) & ~MEDIA_TP, ioaddr + WN4_MEDIA);
1351 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1357 el3_up(struct net_device *dev)
1359 int i, sw_info, net_diag;
1360 int ioaddr = dev->base_addr;
1362 /* Activating the board required and does no harm otherwise */
1363 outw(0x0001, ioaddr + 4);
1365 /* Set the IRQ line. */
1366 outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ);
1368 /* Set the station address in window 2 each time opened. */
1371 for (i = 0; i < 6; i++)
1372 outb(dev->dev_addr[i], ioaddr + i);
1374 if ((dev->if_port & 0x03) == 3) /* BNC interface */
1375 /* Start the thinnet transceiver. We should really wait 50ms...*/
1376 outw(StartCoax, ioaddr + EL3_CMD);
1377 else if ((dev->if_port & 0x03) == 0) { /* 10baseT interface */
1378 /* Combine secondary sw_info word (the adapter level) and primary
1379 sw_info word (duplex setting plus other useless bits) */
1381 sw_info = (read_eeprom(ioaddr, 0x14) & 0x400f) |
1382 (read_eeprom(ioaddr, 0x0d) & 0xBff0);
1385 net_diag = inw(ioaddr + WN4_NETDIAG);
1386 net_diag = (net_diag | FD_ENABLE); /* temporarily assume full-duplex will be set */
1387 printk("%s: ", dev->name);
1388 switch (dev->if_port & 0x0c) {
1390 /* force full-duplex mode if 3c5x9b */
1391 if (sw_info & 0x000f) {
1392 printk("Forcing 3c5x9b full-duplex mode");
1396 /* set full-duplex mode based on eeprom config setting */
1397 if ((sw_info & 0x000f) && (sw_info & 0x8000)) {
1398 printk("Setting 3c5x9b full-duplex mode (from EEPROM configuration bit)");
1402 /* xcvr=(0 || 4) OR user has an old 3c5x9 non "B" model */
1403 printk("Setting 3c5x9/3c5x9B half-duplex mode");
1404 net_diag = (net_diag & ~FD_ENABLE); /* disable full duplex */
1407 outw(net_diag, ioaddr + WN4_NETDIAG);
1408 printk(" if_port: %d, sw_info: %4.4x\n", dev->if_port, sw_info);
1410 printk("%s: 3c5x9 net diag word is now: %4.4x.\n", dev->name, net_diag);
1411 /* Enable link beat and jabber check. */
1412 outw(inw(ioaddr + WN4_MEDIA) | MEDIA_TP, ioaddr + WN4_MEDIA);
1415 /* Switch to the stats window, and clear all stats by reading. */
1416 outw(StatsDisable, ioaddr + EL3_CMD);
1418 for (i = 0; i < 9; i++)
1423 /* Switch to register set 1 for normal use. */
1426 /* Accept b-case and phys addr only. */
1427 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1428 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
1430 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
1431 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
1432 /* Allow status bits to be seen. */
1433 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
1434 /* Ack all pending events, and set active indicator mask. */
1435 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
1437 outw(SetIntrEnb | IntLatch|TxAvailable|TxComplete|RxComplete|StatsFull,
1440 netif_start_queue(dev);
1443 /* Power Management support functions */
1447 el3_suspend(struct device *pdev, pm_message_t state)
1449 unsigned long flags;
1450 struct net_device *dev;
1451 struct el3_private *lp;
1454 dev = pdev->driver_data;
1455 lp = netdev_priv(dev);
1456 ioaddr = dev->base_addr;
1458 spin_lock_irqsave(&lp->lock, flags);
1460 if (netif_running(dev))
1461 netif_device_detach(dev);
1464 outw(PowerDown, ioaddr + EL3_CMD);
1466 spin_unlock_irqrestore(&lp->lock, flags);
1471 el3_resume(struct device *pdev)
1473 unsigned long flags;
1474 struct net_device *dev;
1475 struct el3_private *lp;
1478 dev = pdev->driver_data;
1479 lp = netdev_priv(dev);
1480 ioaddr = dev->base_addr;
1482 spin_lock_irqsave(&lp->lock, flags);
1484 outw(PowerUp, ioaddr + EL3_CMD);
1488 if (netif_running(dev))
1489 netif_device_attach(dev);
1491 spin_unlock_irqrestore(&lp->lock, flags);
1495 #endif /* CONFIG_PM */
1497 module_param(debug,int, 0);
1498 module_param_array(irq, int, NULL, 0);
1499 module_param(max_interrupt_work, int, 0);
1500 MODULE_PARM_DESC(debug, "debug level (0-6)");
1501 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
1502 MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt");
1504 module_param(nopnp, int, 0);
1505 MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)");
1506 #endif /* CONFIG_PNP */
1507 MODULE_DESCRIPTION("3Com Etherlink III (3c509, 3c509B, 3c529, 3c579) ethernet driver");
1508 MODULE_LICENSE("GPL");
1510 static int __init el3_init_module(void)
1519 ret = pnp_register_driver(&el3_pnp_driver);
1524 /* Select an open I/O location at 0x1*0 to do ISA contention select. */
1525 /* Start with 0x110 to avoid some sound cards.*/
1526 for (id_port = 0x110 ; id_port < 0x200; id_port += 0x10) {
1527 if (!request_region(id_port, 1, "3c509-control"))
1529 outb(0x00, id_port);
1530 outb(0xff, id_port);
1531 if (inb(id_port) & 0x01)
1534 release_region(id_port, 1);
1536 if (id_port >= 0x200) {
1538 printk(KERN_ERR "No I/O port available for 3c509 activation.\n");
1540 ret = isa_register_driver(&el3_isa_driver, EL3_MAX_CARDS);
1545 ret = eisa_driver_register(&el3_eisa_driver);
1547 eisa_registered = 1;
1550 ret = mca_register_driver(&el3_mca_driver);
1562 if (eisa_registered)
1572 static void __exit el3_cleanup_module(void)
1576 pnp_unregister_driver(&el3_pnp_driver);
1579 isa_unregister_driver(&el3_isa_driver);
1581 release_region(id_port, 1);
1583 if (eisa_registered)
1584 eisa_driver_unregister(&el3_eisa_driver);
1588 mca_unregister_driver(&el3_mca_driver);
1592 module_init (el3_init_module);
1593 module_exit (el3_cleanup_module);