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.
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
49 - Power Management support
53 - Additional ethtool features
55 - Increase *read_eeprom udelay to workaround oops with 2 cards.
57 - Introduce driver model for EISA cards.
59 - convert to isa_driver and pnp_driver and some cleanups
62 #define DRV_NAME "3c509"
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)
69 #include <linux/module.h>
70 #include <linux/isa.h>
71 #include <linux/pnp.h>
72 #include <linux/string.h>
73 #include <linux/interrupt.h>
74 #include <linux/errno.h>
76 #include <linux/ioport.h>
77 #include <linux/init.h>
78 #include <linux/netdevice.h>
79 #include <linux/etherdevice.h>
81 #include <linux/skbuff.h>
82 #include <linux/delay.h> /* for udelay() */
83 #include <linux/spinlock.h>
84 #include <linux/ethtool.h>
85 #include <linux/device.h>
86 #include <linux/eisa.h>
87 #include <linux/bitops.h>
89 #include <linux/uaccess.h>
94 static int el3_debug = EL3_DEBUG;
96 static int el3_debug = 2;
99 /* Used to do a global count of all the cards in the system. Must be
100 * a global variable so that the eisa probe routines can increment
102 static int el3_cards = 0;
103 #define EL3_MAX_CARDS 8
105 /* To minimize the size of the driver source I only define operating
106 constants if they are used several times. You'll need the manual
107 anyway if you want to understand driver details. */
108 /* Offsets from base I/O address. */
109 #define EL3_DATA 0x00
111 #define EL3_STATUS 0x0e
112 #define EEPROM_READ 0x80
114 #define EL3_IO_EXTENT 16
116 #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
119 /* The top five bits written to EL3_CMD are a command, the lower
120 11 bits are the parameter, if applicable. */
122 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
123 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
124 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
125 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
126 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
127 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
128 StatsDisable = 22<<11, StopCoax = 23<<11, PowerUp = 27<<11,
129 PowerDown = 28<<11, PowerAuto = 29<<11};
132 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
133 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
134 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000, };
136 /* The SetRxFilter command accepts the following classes: */
138 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 };
140 /* Register window 1 offsets, the window used in normal operation. */
143 #define RX_STATUS 0x08
144 #define TX_STATUS 0x0B
145 #define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
147 #define WN0_CONF_CTRL 0x04 /* Window 0: Configuration control register */
148 #define WN0_ADDR_CONF 0x06 /* Window 0: Address configuration register */
149 #define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
150 #define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
151 #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
152 #define WN4_NETDIAG 0x06 /* Window 4: Net diagnostic */
153 #define FD_ENABLE 0x8000 /* Enable full-duplex ("external loopback") */
156 * Must be a power of two (we use a binary and in the
159 #define SKB_QUEUE_SIZE 64
161 enum el3_cardtype { EL3_ISA, EL3_PNP, EL3_EISA };
167 struct sk_buff *queue[SKB_QUEUE_SIZE];
168 enum el3_cardtype type;
171 static int current_tag;
172 static struct net_device *el3_devs[EL3_MAX_CARDS];
174 /* Parameters that may be passed into the module. */
175 static int debug = -1;
176 static int irq[] = {-1, -1, -1, -1, -1, -1, -1, -1};
177 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
178 static int max_interrupt_work = 10;
183 static int el3_common_init(struct net_device *dev);
184 static void el3_common_remove(struct net_device *dev);
185 static ushort id_read_eeprom(int index);
186 static ushort read_eeprom(int ioaddr, int index);
187 static int el3_open(struct net_device *dev);
188 static netdev_tx_t el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
189 static irqreturn_t el3_interrupt(int irq, void *dev_id);
190 static void update_stats(struct net_device *dev);
191 static struct net_device_stats *el3_get_stats(struct net_device *dev);
192 static int el3_rx(struct net_device *dev);
193 static int el3_close(struct net_device *dev);
194 static void set_multicast_list(struct net_device *dev);
195 static void el3_tx_timeout (struct net_device *dev, unsigned int txqueue);
196 static void el3_down(struct net_device *dev);
197 static void el3_up(struct net_device *dev);
198 static const struct ethtool_ops ethtool_ops;
200 static int el3_suspend(struct device *, pm_message_t);
201 static int el3_resume(struct device *);
203 #define el3_suspend NULL
204 #define el3_resume NULL
208 /* generic device remove for all device types */
209 static int el3_device_remove (struct device *device);
210 #ifdef CONFIG_NET_POLL_CONTROLLER
211 static void el3_poll_controller(struct net_device *dev);
214 /* Return 0 on success, 1 on error, 2 when found already detected PnP card */
215 static int el3_isa_id_sequence(__be16 *phys_addr)
217 short lrs_state = 0xff;
220 /* ISA boards are detected by sending the ID sequence to the
221 ID_PORT. We find cards past the first by setting the 'current_tag'
222 on cards as they are found. Cards with their tag set will not
223 respond to subsequent ID sequences. */
227 for (i = 0; i < 255; i++) {
228 outb(lrs_state, id_port);
230 lrs_state = lrs_state & 0x100 ? lrs_state ^ 0xcf : lrs_state;
232 /* For the first probe, clear all board's tag registers. */
233 if (current_tag == 0)
235 else /* Otherwise kill off already-found boards. */
237 if (id_read_eeprom(7) != 0x6d50)
239 /* Read in EEPROM data, which does contention-select.
240 Only the lowest address board will stay "on-line".
241 3Com got the byte order backwards. */
242 for (i = 0; i < 3; i++)
243 phys_addr[i] = htons(id_read_eeprom(i));
246 /* The ISA PnP 3c509 cards respond to the ID sequence too.
247 This check is needed in order not to register them twice. */
248 for (i = 0; i < el3_cards; i++) {
249 struct el3_private *lp = netdev_priv(el3_devs[i]);
250 if (lp->type == EL3_PNP &&
251 ether_addr_equal((u8 *)phys_addr, el3_devs[i]->dev_addr)) {
253 pr_debug("3c509 with address %02x %02x %02x %02x %02x %02x was found by ISAPnP\n",
254 phys_addr[0] & 0xff, phys_addr[0] >> 8,
255 phys_addr[1] & 0xff, phys_addr[1] >> 8,
256 phys_addr[2] & 0xff, phys_addr[2] >> 8);
257 /* Set the adaptor tag so that the next card can be found. */
258 outb(0xd0 + ++current_tag, id_port);
263 #endif /* CONFIG_PNP */
268 static void el3_dev_fill(struct net_device *dev, __be16 *phys_addr, int ioaddr,
269 int irq, int if_port, enum el3_cardtype type)
271 struct el3_private *lp = netdev_priv(dev);
273 memcpy(dev->dev_addr, phys_addr, ETH_ALEN);
274 dev->base_addr = ioaddr;
276 dev->if_port = if_port;
280 static int el3_isa_match(struct device *pdev, unsigned int ndev)
282 struct net_device *dev;
283 int ioaddr, isa_irq, if_port, err;
287 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
288 ; /* Skip to next card when PnP card found */
292 iobase = id_read_eeprom(8);
293 if_port = iobase >> 14;
294 ioaddr = 0x200 + ((iobase & 0x1f) << 4);
295 if (irq[el3_cards] > 1 && irq[el3_cards] < 16)
296 isa_irq = irq[el3_cards];
298 isa_irq = id_read_eeprom(9) >> 12;
300 dev = alloc_etherdev(sizeof(struct el3_private));
304 SET_NETDEV_DEV(dev, pdev);
305 netdev_boot_setup_check(dev);
307 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-isa")) {
312 /* Set the adaptor tag so that the next card can be found. */
313 outb(0xd0 + ++current_tag, id_port);
315 /* Activate the adaptor at the EEPROM location. */
316 outb((ioaddr >> 4) | 0xe0, id_port);
319 if (inw(ioaddr) != 0x6d50) {
324 /* Free the interrupt so that some other card can use it. */
325 outw(0x0f00, ioaddr + WN0_IRQ);
327 el3_dev_fill(dev, phys_addr, ioaddr, isa_irq, if_port, EL3_ISA);
328 dev_set_drvdata(pdev, dev);
329 if (el3_common_init(dev)) {
334 el3_devs[el3_cards++] = dev;
338 static void el3_isa_remove(struct device *pdev,
341 el3_device_remove(pdev);
342 dev_set_drvdata(pdev, NULL);
346 static int el3_isa_suspend(struct device *dev, unsigned int n,
350 return el3_suspend(dev, state);
353 static int el3_isa_resume(struct device *dev, unsigned int n)
355 struct net_device *ndev = dev_get_drvdata(dev);
356 int ioaddr = ndev->base_addr, err;
359 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
360 ; /* Skip to next card when PnP card found */
363 /* Set the adaptor tag so that the next card can be found. */
364 outb(0xd0 + ++current_tag, id_port);
365 /* Enable the card */
366 outb((ioaddr >> 4) | 0xe0, id_port);
368 if (inw(ioaddr) != 0x6d50)
370 /* Free the interrupt so that some other card can use it. */
371 outw(0x0f00, ioaddr + WN0_IRQ);
372 return el3_resume(dev);
376 static struct isa_driver el3_isa_driver = {
377 .match = el3_isa_match,
378 .remove = el3_isa_remove,
380 .suspend = el3_isa_suspend,
381 .resume = el3_isa_resume,
387 static int isa_registered;
390 static const struct pnp_device_id el3_pnp_ids[] = {
391 { .id = "TCM5090" }, /* 3Com Etherlink III (TP) */
392 { .id = "TCM5091" }, /* 3Com Etherlink III */
393 { .id = "TCM5094" }, /* 3Com Etherlink III (combo) */
394 { .id = "TCM5095" }, /* 3Com Etherlink III (TPO) */
395 { .id = "TCM5098" }, /* 3Com Etherlink III (TPC) */
396 { .id = "PNP80f7" }, /* 3Com Etherlink III compatible */
397 { .id = "PNP80f8" }, /* 3Com Etherlink III compatible */
400 MODULE_DEVICE_TABLE(pnp, el3_pnp_ids);
402 static int el3_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id)
405 int ioaddr, irq, if_port;
407 struct net_device *dev = NULL;
410 ioaddr = pnp_port_start(pdev, 0);
411 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-pnp"))
413 irq = pnp_irq(pdev, 0);
415 for (i = 0; i < 3; i++)
416 phys_addr[i] = htons(read_eeprom(ioaddr, i));
417 if_port = read_eeprom(ioaddr, 8) >> 14;
418 dev = alloc_etherdev(sizeof(struct el3_private));
420 release_region(ioaddr, EL3_IO_EXTENT);
423 SET_NETDEV_DEV(dev, &pdev->dev);
424 netdev_boot_setup_check(dev);
426 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_PNP);
427 pnp_set_drvdata(pdev, dev);
428 err = el3_common_init(dev);
431 pnp_set_drvdata(pdev, NULL);
436 el3_devs[el3_cards++] = dev;
440 static void el3_pnp_remove(struct pnp_dev *pdev)
442 el3_common_remove(pnp_get_drvdata(pdev));
443 pnp_set_drvdata(pdev, NULL);
447 static int el3_pnp_suspend(struct pnp_dev *pdev, pm_message_t state)
449 return el3_suspend(&pdev->dev, state);
452 static int el3_pnp_resume(struct pnp_dev *pdev)
454 return el3_resume(&pdev->dev);
458 static struct pnp_driver el3_pnp_driver = {
460 .id_table = el3_pnp_ids,
461 .probe = el3_pnp_probe,
462 .remove = el3_pnp_remove,
464 .suspend = el3_pnp_suspend,
465 .resume = el3_pnp_resume,
468 static int pnp_registered;
469 #endif /* CONFIG_PNP */
472 static const struct eisa_device_id el3_eisa_ids[] = {
482 MODULE_DEVICE_TABLE(eisa, el3_eisa_ids);
484 static int el3_eisa_probe (struct device *device);
486 static struct eisa_driver el3_eisa_driver = {
487 .id_table = el3_eisa_ids,
490 .probe = el3_eisa_probe,
491 .remove = el3_device_remove,
492 .suspend = el3_suspend,
493 .resume = el3_resume,
496 static int eisa_registered;
499 static const struct net_device_ops netdev_ops = {
500 .ndo_open = el3_open,
501 .ndo_stop = el3_close,
502 .ndo_start_xmit = el3_start_xmit,
503 .ndo_get_stats = el3_get_stats,
504 .ndo_set_rx_mode = set_multicast_list,
505 .ndo_tx_timeout = el3_tx_timeout,
506 .ndo_set_mac_address = eth_mac_addr,
507 .ndo_validate_addr = eth_validate_addr,
508 #ifdef CONFIG_NET_POLL_CONTROLLER
509 .ndo_poll_controller = el3_poll_controller,
513 static int el3_common_init(struct net_device *dev)
515 struct el3_private *lp = netdev_priv(dev);
517 const char *if_names[] = {"10baseT", "AUI", "undefined", "BNC"};
519 spin_lock_init(&lp->lock);
521 if (dev->mem_start & 0x05) { /* xcvr codes 1/3/4/12 */
522 dev->if_port = (dev->mem_start & 0x0f);
523 } else { /* xcvr codes 0/8 */
524 /* use eeprom value, but save user's full-duplex selection */
525 dev->if_port |= (dev->mem_start & 0x08);
528 /* The EL3-specific entries in the device structure. */
529 dev->netdev_ops = &netdev_ops;
530 dev->watchdog_timeo = TX_TIMEOUT;
531 dev->ethtool_ops = ðtool_ops;
533 err = register_netdev(dev);
535 pr_err("Failed to register 3c5x9 at %#3.3lx, IRQ %d.\n",
536 dev->base_addr, dev->irq);
537 release_region(dev->base_addr, EL3_IO_EXTENT);
541 pr_info("%s: 3c5x9 found at %#3.3lx, %s port, address %pM, IRQ %d.\n",
542 dev->name, dev->base_addr, if_names[(dev->if_port & 0x03)],
543 dev->dev_addr, dev->irq);
549 static void el3_common_remove (struct net_device *dev)
551 unregister_netdev (dev);
552 release_region(dev->base_addr, EL3_IO_EXTENT);
557 static int el3_eisa_probe(struct device *device)
560 int ioaddr, irq, if_port;
562 struct net_device *dev = NULL;
563 struct eisa_device *edev;
566 /* Yeepee, The driver framework is calling us ! */
567 edev = to_eisa_device (device);
568 ioaddr = edev->base_addr;
570 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c579-eisa"))
573 /* Change the register set to the configuration window 0. */
574 outw(SelectWindow | 0, ioaddr + 0xC80 + EL3_CMD);
576 irq = inw(ioaddr + WN0_IRQ) >> 12;
577 if_port = inw(ioaddr + 6)>>14;
578 for (i = 0; i < 3; i++)
579 phys_addr[i] = htons(read_eeprom(ioaddr, i));
581 /* Restore the "Product ID" to the EEPROM read register. */
582 read_eeprom(ioaddr, 3);
584 dev = alloc_etherdev(sizeof (struct el3_private));
586 release_region(ioaddr, EL3_IO_EXTENT);
590 SET_NETDEV_DEV(dev, device);
591 netdev_boot_setup_check(dev);
593 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_EISA);
594 eisa_set_drvdata (edev, dev);
595 err = el3_common_init(dev);
598 eisa_set_drvdata (edev, NULL);
603 el3_devs[el3_cards++] = dev;
608 /* This remove works for all device types.
610 * The net dev must be stored in the driver data field */
611 static int el3_device_remove(struct device *device)
613 struct net_device *dev;
615 dev = dev_get_drvdata(device);
617 el3_common_remove (dev);
621 /* Read a word from the EEPROM using the regular EEPROM access register.
622 Assume that we are in register window zero.
624 static ushort read_eeprom(int ioaddr, int index)
626 outw(EEPROM_READ + index, ioaddr + 10);
627 /* Pause for at least 162 us. for the read to take place.
628 Some chips seem to require much longer */
630 return inw(ioaddr + 12);
633 /* Read a word from the EEPROM when in the ISA ID probe state. */
634 static ushort id_read_eeprom(int index)
638 /* Issue read command, and pause for at least 162 us. for it to complete.
639 Assume extra-fast 16Mhz bus. */
640 outb(EEPROM_READ + index, id_port);
642 /* Pause for at least 162 us. for the read to take place. */
643 /* Some chips seem to require much longer */
646 for (bit = 15; bit >= 0; bit--)
647 word = (word << 1) + (inb(id_port) & 0x01);
650 pr_debug(" 3c509 EEPROM word %d %#4.4x.\n", index, word);
657 el3_open(struct net_device *dev)
659 int ioaddr = dev->base_addr;
662 outw(TxReset, ioaddr + EL3_CMD);
663 outw(RxReset, ioaddr + EL3_CMD);
664 outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
666 i = request_irq(dev->irq, el3_interrupt, 0, dev->name, dev);
672 pr_debug("%s: Opening, IRQ %d status@%x %4.4x.\n", dev->name,
673 dev->irq, ioaddr + EL3_STATUS, inw(ioaddr + EL3_STATUS));
678 pr_debug("%s: Opened 3c509 IRQ %d status %4.4x.\n",
679 dev->name, dev->irq, inw(ioaddr + EL3_STATUS));
685 el3_tx_timeout (struct net_device *dev, unsigned int txqueue)
687 int ioaddr = dev->base_addr;
689 /* Transmitter timeout, serious problems. */
690 pr_warn("%s: transmit timed out, Tx_status %2.2x status %4.4x Tx FIFO room %d\n",
691 dev->name, inb(ioaddr + TX_STATUS), inw(ioaddr + EL3_STATUS),
692 inw(ioaddr + TX_FREE));
693 dev->stats.tx_errors++;
694 netif_trans_update(dev); /* prevent tx timeout */
695 /* Issue TX_RESET and TX_START commands. */
696 outw(TxReset, ioaddr + EL3_CMD);
697 outw(TxEnable, ioaddr + EL3_CMD);
698 netif_wake_queue(dev);
703 el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
705 struct el3_private *lp = netdev_priv(dev);
706 int ioaddr = dev->base_addr;
709 netif_stop_queue (dev);
711 dev->stats.tx_bytes += skb->len;
714 pr_debug("%s: el3_start_xmit(length = %u) called, status %4.4x.\n",
715 dev->name, skb->len, inw(ioaddr + EL3_STATUS));
718 * We lock the driver against other processors. Note
719 * we don't need to lock versus the IRQ as we suspended
720 * that. This means that we lose the ability to take
721 * an RX during a TX upload. That sucks a bit with SMP
722 * on an original 3c509 (2K buffer)
724 * Using disable_irq stops us crapping on other
725 * time sensitive devices.
728 spin_lock_irqsave(&lp->lock, flags);
730 /* Put out the doubleword header... */
731 outw(skb->len, ioaddr + TX_FIFO);
732 outw(0x00, ioaddr + TX_FIFO);
733 /* ... and the packet rounded to a doubleword. */
734 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
736 if (inw(ioaddr + TX_FREE) > 1536)
737 netif_start_queue(dev);
739 /* Interrupt us when the FIFO has room for max-sized packet. */
740 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
742 spin_unlock_irqrestore(&lp->lock, flags);
744 dev_consume_skb_any (skb);
746 /* Clear the Tx status stack. */
751 while (--i > 0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
752 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
753 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
754 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
755 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
761 /* The EL3 interrupt handler. */
763 el3_interrupt(int irq, void *dev_id)
765 struct net_device *dev = dev_id;
766 struct el3_private *lp;
768 int i = max_interrupt_work;
770 lp = netdev_priv(dev);
771 spin_lock(&lp->lock);
773 ioaddr = dev->base_addr;
776 status = inw(ioaddr + EL3_STATUS);
777 pr_debug("%s: interrupt, status %4.4x.\n", dev->name, status);
780 while ((status = inw(ioaddr + EL3_STATUS)) &
781 (IntLatch | RxComplete | StatsFull)) {
783 if (status & RxComplete)
786 if (status & TxAvailable) {
788 pr_debug(" TX room bit was handled.\n");
789 /* There's room in the FIFO for a full-sized packet. */
790 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
791 netif_wake_queue (dev);
793 if (status & (AdapterFailure | RxEarly | StatsFull | TxComplete)) {
794 /* Handle all uncommon interrupts. */
795 if (status & StatsFull) /* Empty statistics. */
797 if (status & RxEarly) { /* Rx early is unused. */
799 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
801 if (status & TxComplete) { /* Really Tx error. */
805 while (--i>0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
806 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
807 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
808 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
809 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
812 if (status & AdapterFailure) {
813 /* Adapter failure requires Rx reset and reinit. */
814 outw(RxReset, ioaddr + EL3_CMD);
815 /* Set the Rx filter to the current state. */
816 outw(SetRxFilter | RxStation | RxBroadcast
817 | (dev->flags & IFF_ALLMULTI ? RxMulticast : 0)
818 | (dev->flags & IFF_PROMISC ? RxProm : 0),
820 outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
821 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
826 pr_err("%s: Infinite loop in interrupt, status %4.4x.\n",
828 /* Clear all interrupts. */
829 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
832 /* Acknowledge the IRQ. */
833 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); /* Ack IRQ */
837 pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name,
838 inw(ioaddr + EL3_STATUS));
840 spin_unlock(&lp->lock);
845 #ifdef CONFIG_NET_POLL_CONTROLLER
847 * Polling receive - used by netconsole and other diagnostic tools
848 * to allow network i/o with interrupts disabled.
850 static void el3_poll_controller(struct net_device *dev)
852 disable_irq(dev->irq);
853 el3_interrupt(dev->irq, dev);
854 enable_irq(dev->irq);
858 static struct net_device_stats *
859 el3_get_stats(struct net_device *dev)
861 struct el3_private *lp = netdev_priv(dev);
865 * This is fast enough not to bother with disable IRQ
869 spin_lock_irqsave(&lp->lock, flags);
871 spin_unlock_irqrestore(&lp->lock, flags);
875 /* Update statistics. We change to register window 6, so this should be run
876 single-threaded if the device is active. This is expected to be a rare
877 operation, and it's simpler for the rest of the driver to assume that
878 window 1 is always valid rather than use a special window-state variable.
880 static void update_stats(struct net_device *dev)
882 int ioaddr = dev->base_addr;
885 pr_debug(" Updating the statistics.\n");
886 /* Turn off statistics updates while reading. */
887 outw(StatsDisable, ioaddr + EL3_CMD);
888 /* Switch to the stats window, and read everything. */
890 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
891 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
892 /* Multiple collisions. */ inb(ioaddr + 2);
893 dev->stats.collisions += inb(ioaddr + 3);
894 dev->stats.tx_window_errors += inb(ioaddr + 4);
895 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
896 dev->stats.tx_packets += inb(ioaddr + 6);
897 /* Rx packets */ inb(ioaddr + 7);
898 /* Tx deferrals */ inb(ioaddr + 8);
899 inw(ioaddr + 10); /* Total Rx and Tx octets. */
902 /* Back to window 1, and turn statistics back on. */
904 outw(StatsEnable, ioaddr + EL3_CMD);
908 el3_rx(struct net_device *dev)
910 int ioaddr = dev->base_addr;
914 pr_debug(" In rx_packet(), status %4.4x, rx_status %4.4x.\n",
915 inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
916 while ((rx_status = inw(ioaddr + RX_STATUS)) > 0) {
917 if (rx_status & 0x4000) { /* Error, update stats. */
918 short error = rx_status & 0x3800;
920 outw(RxDiscard, ioaddr + EL3_CMD);
921 dev->stats.rx_errors++;
923 case 0x0000: dev->stats.rx_over_errors++; break;
924 case 0x0800: dev->stats.rx_length_errors++; break;
925 case 0x1000: dev->stats.rx_frame_errors++; break;
926 case 0x1800: dev->stats.rx_length_errors++; break;
927 case 0x2000: dev->stats.rx_frame_errors++; break;
928 case 0x2800: dev->stats.rx_crc_errors++; break;
931 short pkt_len = rx_status & 0x7ff;
934 skb = netdev_alloc_skb(dev, pkt_len + 5);
936 pr_debug("Receiving packet size %d status %4.4x.\n",
939 skb_reserve(skb, 2); /* Align IP on 16 byte */
941 /* 'skb->data' points to the start of sk_buff data area. */
942 insl(ioaddr + RX_FIFO, skb_put(skb,pkt_len),
945 outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */
946 skb->protocol = eth_type_trans(skb,dev);
948 dev->stats.rx_bytes += pkt_len;
949 dev->stats.rx_packets++;
952 outw(RxDiscard, ioaddr + EL3_CMD);
953 dev->stats.rx_dropped++;
955 pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n",
958 inw(ioaddr + EL3_STATUS); /* Delay. */
959 while (inw(ioaddr + EL3_STATUS) & 0x1000)
960 pr_debug(" Waiting for 3c509 to discard packet, status %x.\n",
961 inw(ioaddr + EL3_STATUS) );
968 * Set or clear the multicast filter for this adaptor.
971 set_multicast_list(struct net_device *dev)
974 struct el3_private *lp = netdev_priv(dev);
975 int ioaddr = dev->base_addr;
976 int mc_count = netdev_mc_count(dev);
980 if (old != mc_count) {
982 pr_debug("%s: Setting Rx mode to %d addresses.\n",
983 dev->name, mc_count);
986 spin_lock_irqsave(&lp->lock, flags);
987 if (dev->flags&IFF_PROMISC) {
988 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
991 else if (mc_count || (dev->flags&IFF_ALLMULTI)) {
992 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast, ioaddr + EL3_CMD);
995 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
996 spin_unlock_irqrestore(&lp->lock, flags);
1000 el3_close(struct net_device *dev)
1002 int ioaddr = dev->base_addr;
1003 struct el3_private *lp = netdev_priv(dev);
1006 pr_debug("%s: Shutting down ethercard.\n", dev->name);
1010 free_irq(dev->irq, dev);
1011 /* Switching back to window 0 disables the IRQ. */
1013 if (lp->type != EL3_EISA) {
1014 /* But we explicitly zero the IRQ line select anyway. Don't do
1015 * it on EISA cards, it prevents the module from getting an
1016 * IRQ after unload+reload... */
1017 outw(0x0f00, ioaddr + WN0_IRQ);
1024 el3_link_ok(struct net_device *dev)
1026 int ioaddr = dev->base_addr;
1030 tmp = inw(ioaddr + WN4_MEDIA);
1032 return tmp & (1<<11);
1036 el3_netdev_get_ecmd(struct net_device *dev, struct ethtool_link_ksettings *cmd)
1039 int ioaddr = dev->base_addr;
1043 /* obtain current transceiver via WN4_MEDIA? */
1044 tmp = inw(ioaddr + WN0_ADDR_CONF);
1045 switch (tmp >> 14) {
1047 cmd->base.port = PORT_TP;
1050 cmd->base.port = PORT_AUI;
1053 cmd->base.port = PORT_BNC;
1059 cmd->base.duplex = DUPLEX_HALF;
1061 tmp = inw(ioaddr + WN0_CONF_CTRL);
1063 supported |= SUPPORTED_AUI;
1065 supported |= SUPPORTED_BNC;
1067 supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half |
1068 SUPPORTED_10baseT_Full; /* hmm... */
1070 tmp = inw(ioaddr + WN4_NETDIAG);
1071 if (tmp & FD_ENABLE)
1072 cmd->base.duplex = DUPLEX_FULL;
1075 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
1077 cmd->base.speed = SPEED_10;
1082 el3_netdev_set_ecmd(struct net_device *dev,
1083 const struct ethtool_link_ksettings *cmd)
1086 int ioaddr = dev->base_addr;
1088 if (cmd->base.speed != SPEED_10)
1090 if ((cmd->base.duplex != DUPLEX_HALF) &&
1091 (cmd->base.duplex != DUPLEX_FULL))
1094 /* change XCVR type */
1096 tmp = inw(ioaddr + WN0_ADDR_CONF);
1097 switch (cmd->base.port) {
1114 outw(tmp, ioaddr + WN0_ADDR_CONF);
1115 if (dev->if_port == 3) {
1116 /* fire up the DC-DC convertor if BNC gets enabled */
1117 tmp = inw(ioaddr + WN0_ADDR_CONF);
1118 if (tmp & (3 << 14)) {
1119 outw(StartCoax, ioaddr + EL3_CMD);
1126 tmp = inw(ioaddr + WN4_NETDIAG);
1127 if (cmd->base.duplex == DUPLEX_FULL)
1131 outw(tmp, ioaddr + WN4_NETDIAG);
1137 static void el3_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1139 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
1142 static int el3_get_link_ksettings(struct net_device *dev,
1143 struct ethtool_link_ksettings *cmd)
1145 struct el3_private *lp = netdev_priv(dev);
1147 spin_lock_irq(&lp->lock);
1148 el3_netdev_get_ecmd(dev, cmd);
1149 spin_unlock_irq(&lp->lock);
1153 static int el3_set_link_ksettings(struct net_device *dev,
1154 const struct ethtool_link_ksettings *cmd)
1156 struct el3_private *lp = netdev_priv(dev);
1159 spin_lock_irq(&lp->lock);
1160 ret = el3_netdev_set_ecmd(dev, cmd);
1161 spin_unlock_irq(&lp->lock);
1165 static u32 el3_get_link(struct net_device *dev)
1167 struct el3_private *lp = netdev_priv(dev);
1170 spin_lock_irq(&lp->lock);
1171 ret = el3_link_ok(dev);
1172 spin_unlock_irq(&lp->lock);
1176 static u32 el3_get_msglevel(struct net_device *dev)
1181 static void el3_set_msglevel(struct net_device *dev, u32 v)
1186 static const struct ethtool_ops ethtool_ops = {
1187 .get_drvinfo = el3_get_drvinfo,
1188 .get_link = el3_get_link,
1189 .get_msglevel = el3_get_msglevel,
1190 .set_msglevel = el3_set_msglevel,
1191 .get_link_ksettings = el3_get_link_ksettings,
1192 .set_link_ksettings = el3_set_link_ksettings,
1196 el3_down(struct net_device *dev)
1198 int ioaddr = dev->base_addr;
1200 netif_stop_queue(dev);
1202 /* Turn off statistics ASAP. We update lp->stats below. */
1203 outw(StatsDisable, ioaddr + EL3_CMD);
1205 /* Disable the receiver and transmitter. */
1206 outw(RxDisable, ioaddr + EL3_CMD);
1207 outw(TxDisable, ioaddr + EL3_CMD);
1209 if (dev->if_port == 3)
1210 /* Turn off thinnet power. Green! */
1211 outw(StopCoax, ioaddr + EL3_CMD);
1212 else if (dev->if_port == 0) {
1213 /* Disable link beat and jabber, if_port may change here next open(). */
1215 outw(inw(ioaddr + WN4_MEDIA) & ~MEDIA_TP, ioaddr + WN4_MEDIA);
1218 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1224 el3_up(struct net_device *dev)
1226 int i, sw_info, net_diag;
1227 int ioaddr = dev->base_addr;
1229 /* Activating the board required and does no harm otherwise */
1230 outw(0x0001, ioaddr + 4);
1232 /* Set the IRQ line. */
1233 outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ);
1235 /* Set the station address in window 2 each time opened. */
1238 for (i = 0; i < 6; i++)
1239 outb(dev->dev_addr[i], ioaddr + i);
1241 if ((dev->if_port & 0x03) == 3) /* BNC interface */
1242 /* Start the thinnet transceiver. We should really wait 50ms...*/
1243 outw(StartCoax, ioaddr + EL3_CMD);
1244 else if ((dev->if_port & 0x03) == 0) { /* 10baseT interface */
1245 /* Combine secondary sw_info word (the adapter level) and primary
1246 sw_info word (duplex setting plus other useless bits) */
1248 sw_info = (read_eeprom(ioaddr, 0x14) & 0x400f) |
1249 (read_eeprom(ioaddr, 0x0d) & 0xBff0);
1252 net_diag = inw(ioaddr + WN4_NETDIAG);
1253 net_diag = (net_diag | FD_ENABLE); /* temporarily assume full-duplex will be set */
1254 pr_info("%s: ", dev->name);
1255 switch (dev->if_port & 0x0c) {
1257 /* force full-duplex mode if 3c5x9b */
1258 if (sw_info & 0x000f) {
1259 pr_cont("Forcing 3c5x9b full-duplex mode");
1264 /* set full-duplex mode based on eeprom config setting */
1265 if ((sw_info & 0x000f) && (sw_info & 0x8000)) {
1266 pr_cont("Setting 3c5x9b full-duplex mode (from EEPROM configuration bit)");
1271 /* xcvr=(0 || 4) OR user has an old 3c5x9 non "B" model */
1272 pr_cont("Setting 3c5x9/3c5x9B half-duplex mode");
1273 net_diag = (net_diag & ~FD_ENABLE); /* disable full duplex */
1276 outw(net_diag, ioaddr + WN4_NETDIAG);
1277 pr_cont(" if_port: %d, sw_info: %4.4x\n", dev->if_port, sw_info);
1279 pr_debug("%s: 3c5x9 net diag word is now: %4.4x.\n", dev->name, net_diag);
1280 /* Enable link beat and jabber check. */
1281 outw(inw(ioaddr + WN4_MEDIA) | MEDIA_TP, ioaddr + WN4_MEDIA);
1284 /* Switch to the stats window, and clear all stats by reading. */
1285 outw(StatsDisable, ioaddr + EL3_CMD);
1287 for (i = 0; i < 9; i++)
1292 /* Switch to register set 1 for normal use. */
1295 /* Accept b-case and phys addr only. */
1296 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1297 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
1299 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
1300 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
1301 /* Allow status bits to be seen. */
1302 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
1303 /* Ack all pending events, and set active indicator mask. */
1304 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
1306 outw(SetIntrEnb | IntLatch|TxAvailable|TxComplete|RxComplete|StatsFull,
1309 netif_start_queue(dev);
1312 /* Power Management support functions */
1316 el3_suspend(struct device *pdev, pm_message_t state)
1318 unsigned long flags;
1319 struct net_device *dev;
1320 struct el3_private *lp;
1323 dev = dev_get_drvdata(pdev);
1324 lp = netdev_priv(dev);
1325 ioaddr = dev->base_addr;
1327 spin_lock_irqsave(&lp->lock, flags);
1329 if (netif_running(dev))
1330 netif_device_detach(dev);
1333 outw(PowerDown, ioaddr + EL3_CMD);
1335 spin_unlock_irqrestore(&lp->lock, flags);
1340 el3_resume(struct device *pdev)
1342 unsigned long flags;
1343 struct net_device *dev;
1344 struct el3_private *lp;
1347 dev = dev_get_drvdata(pdev);
1348 lp = netdev_priv(dev);
1349 ioaddr = dev->base_addr;
1351 spin_lock_irqsave(&lp->lock, flags);
1353 outw(PowerUp, ioaddr + EL3_CMD);
1357 if (netif_running(dev))
1358 netif_device_attach(dev);
1360 spin_unlock_irqrestore(&lp->lock, flags);
1364 #endif /* CONFIG_PM */
1366 module_param(debug,int, 0);
1367 module_param_hw_array(irq, int, irq, NULL, 0);
1368 module_param(max_interrupt_work, int, 0);
1369 MODULE_PARM_DESC(debug, "debug level (0-6)");
1370 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
1371 MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt");
1373 module_param(nopnp, int, 0);
1374 MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)");
1375 #endif /* CONFIG_PNP */
1376 MODULE_DESCRIPTION("3Com Etherlink III (3c509, 3c509B, 3c529, 3c579) ethernet driver");
1377 MODULE_LICENSE("GPL");
1379 static int __init el3_init_module(void)
1388 ret = pnp_register_driver(&el3_pnp_driver);
1393 /* Select an open I/O location at 0x1*0 to do ISA contention select. */
1394 /* Start with 0x110 to avoid some sound cards.*/
1395 for (id_port = 0x110 ; id_port < 0x200; id_port += 0x10) {
1396 if (!request_region(id_port, 1, "3c509-control"))
1398 outb(0x00, id_port);
1399 outb(0xff, id_port);
1400 if (inb(id_port) & 0x01)
1403 release_region(id_port, 1);
1405 if (id_port >= 0x200) {
1407 pr_err("No I/O port available for 3c509 activation.\n");
1409 ret = isa_register_driver(&el3_isa_driver, EL3_MAX_CARDS);
1414 ret = eisa_driver_register(&el3_eisa_driver);
1416 eisa_registered = 1;
1426 if (eisa_registered)
1432 static void __exit el3_cleanup_module(void)
1436 pnp_unregister_driver(&el3_pnp_driver);
1439 isa_unregister_driver(&el3_isa_driver);
1441 release_region(id_port, 1);
1443 if (eisa_registered)
1444 eisa_driver_unregister(&el3_eisa_driver);
1448 module_init (el3_init_module);
1449 module_exit (el3_cleanup_module);