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1/* 3c509.c: A 3c509 EtherLink3 ethernet driver for linux. */2/*3 Written 1993-2000 by Donald Becker.4 5 Copyright 1994-2000 by Donald Becker.6 Copyright 1993 United States Government as represented by the7 Director, National Security Agency. This software may be used and8 distributed according to the terms of the GNU General Public License,9 incorporated herein by reference.10 11 This driver is for the 3Com EtherLinkIII series.12 13 The author may be reached as becker@scyld.com, or C/O14 Scyld Computing Corporation15 410 Severn Ave., Suite 21016 Annapolis MD 2140317 18 Known limitations:19 Because of the way 3c509 ISA detection works it's difficult to predict20 a priori which of several ISA-mode cards will be detected first.21 22 This driver does not use predictive interrupt mode, resulting in higher23 packet latency but lower overhead. If interrupts are disabled for an24 unusually long time it could also result in missed packets, but in25 practice this rarely happens.26 27 28 FIXES:29 Alan Cox: Removed the 'Unexpected interrupt' bug.30 Michael Meskes: Upgraded to Donald Becker's version 1.07.31 Alan Cox: Increased the eeprom delay. Regardless of32 what the docs say some people definitely33 get problems with lower (but in card spec)34 delays35 v1.10 4/21/97 Fixed module code so that multiple cards may be detected,36 other cleanups. -djb37 Andrea Arcangeli: Upgraded to Donald Becker's version 1.12.38 Rick Payne: Fixed SMP race condition39 v1.13 9/8/97 Made 'max_interrupt_work' an insmod-settable variable -djb40 v1.14 10/15/97 Avoided waiting..discard message for fast machines -djb41 v1.15 1/31/98 Faster recovery for Tx errors. -djb42 v1.16 2/3/98 Different ID port handling to avoid sound cards. -djb43 v1.18 12Mar2001 Andrew Morton44 - Avoid bogus detect of 3c590's (Andrzej Krzysztofowicz)45 - Reviewed against 1.18 from scyld.com46 v1.18a 17Nov2001 Jeff Garzik <jgarzik@pobox.com>47 - ethtool support48 v1.18b 1Mar2002 Zwane Mwaikambo <zwane@commfireservices.com>49 - Power Management support50 v1.18c 1Mar2002 David Ruggiero <jdr@farfalle.com>51 - Full duplex support52 v1.19 16Oct2002 Zwane Mwaikambo <zwane@linuxpower.ca>53 - Additional ethtool features54 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 cleanups60*/61 62#define DRV_NAME "3c509"63 64/* A few values that may be tweaked. */65 66/* Time in jiffies before concluding the transmitter is hung. */67#define TX_TIMEOUT (400*HZ/1000)68 69#include <linux/module.h>70#include <linux/isa.h>71#include <linux/pnp.h>72#include <linux/string.h>73#include <linux/interrupt.h>74#include <linux/errno.h>75#include <linux/in.h>76#include <linux/ioport.h>77#include <linux/init.h>78#include <linux/netdevice.h>79#include <linux/etherdevice.h>80#include <linux/pm.h>81#include <linux/skbuff.h>82#include <linux/delay.h> /* for udelay() */83#include <linux/spinlock.h>84#include <linux/ethtool.h>85#include <linux/device.h>86#include <linux/eisa.h>87#include <linux/bitops.h>88 89#include <linux/uaccess.h>90#include <asm/io.h>91#include <asm/irq.h>92 93#ifdef EL3_DEBUG94static int el3_debug = EL3_DEBUG;95#else96static int el3_debug = 2;97#endif98 99/* Used to do a global count of all the cards in the system. Must be100 * a global variable so that the eisa probe routines can increment101 * it */102static int el3_cards = 0;103#define EL3_MAX_CARDS 8104 105/* To minimize the size of the driver source I only define operating106 constants if they are used several times. You'll need the manual107 anyway if you want to understand driver details. */108/* Offsets from base I/O address. */109#define EL3_DATA 0x00110#define EL3_CMD 0x0e111#define EL3_STATUS 0x0e112#define EEPROM_READ 0x80113 114#define EL3_IO_EXTENT 16115 116#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)117 118 119/* The top five bits written to EL3_CMD are a command, the lower120 11 bits are the parameter, if applicable. */121enum c509cmd {122 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,123 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,124 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,125 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,126 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,127 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,128 StatsDisable = 22<<11, StopCoax = 23<<11, PowerUp = 27<<11,129 PowerDown = 28<<11, PowerAuto = 29<<11};130 131enum c509status {132 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,133 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,134 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000, };135 136/* The SetRxFilter command accepts the following classes: */137enum RxFilter {138 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 };139 140/* Register window 1 offsets, the window used in normal operation. */141#define TX_FIFO 0x00142#define RX_FIFO 0x00143#define RX_STATUS 0x08144#define TX_STATUS 0x0B145#define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */146 147#define WN0_CONF_CTRL 0x04 /* Window 0: Configuration control register */148#define WN0_ADDR_CONF 0x06 /* Window 0: Address configuration register */149#define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */150#define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */151#define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */152#define WN4_NETDIAG 0x06 /* Window 4: Net diagnostic */153#define FD_ENABLE 0x8000 /* Enable full-duplex ("external loopback") */154 155/*156 * Must be a power of two (we use a binary and in the157 * circular queue)158 */159#define SKB_QUEUE_SIZE 64160 161enum el3_cardtype { EL3_ISA, EL3_PNP, EL3_EISA };162 163struct el3_private {164 spinlock_t lock;165 /* skb send-queue */166 int head, size;167 struct sk_buff *queue[SKB_QUEUE_SIZE];168 enum el3_cardtype type;169};170static int id_port;171static int current_tag;172static struct net_device *el3_devs[EL3_MAX_CARDS];173 174/* Parameters that may be passed into the module. */175static int debug = -1;176static int irq[] = {-1, -1, -1, -1, -1, -1, -1, -1};177/* Maximum events (Rx packets, etc.) to handle at each interrupt. */178static int max_interrupt_work = 10;179#ifdef CONFIG_PNP180static int nopnp;181#endif182 183static int el3_common_init(struct net_device *dev);184static void el3_common_remove(struct net_device *dev);185static ushort id_read_eeprom(int index);186static ushort read_eeprom(int ioaddr, int index);187static int el3_open(struct net_device *dev);188static netdev_tx_t el3_start_xmit(struct sk_buff *skb, struct net_device *dev);189static irqreturn_t el3_interrupt(int irq, void *dev_id);190static void update_stats(struct net_device *dev);191static struct net_device_stats *el3_get_stats(struct net_device *dev);192static int el3_rx(struct net_device *dev);193static int el3_close(struct net_device *dev);194static void set_multicast_list(struct net_device *dev);195static void el3_tx_timeout (struct net_device *dev, unsigned int txqueue);196static void el3_down(struct net_device *dev);197static void el3_up(struct net_device *dev);198static const struct ethtool_ops ethtool_ops;199#ifdef CONFIG_PM200static int el3_suspend(struct device *, pm_message_t);201static int el3_resume(struct device *);202#else203#define el3_suspend NULL204#define el3_resume NULL205#endif206 207 208/* generic device remove for all device types */209static int el3_device_remove (struct device *device);210#ifdef CONFIG_NET_POLL_CONTROLLER211static void el3_poll_controller(struct net_device *dev);212#endif213 214/* Return 0 on success, 1 on error, 2 when found already detected PnP card */215static int el3_isa_id_sequence(__be16 *phys_addr)216{217 short lrs_state = 0xff;218 int i;219 220 /* ISA boards are detected by sending the ID sequence to the221 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 not223 respond to subsequent ID sequences. */224 225 outb(0x00, id_port);226 outb(0x00, id_port);227 for (i = 0; i < 255; i++) {228 outb(lrs_state, id_port);229 lrs_state <<= 1;230 lrs_state = lrs_state & 0x100 ? lrs_state ^ 0xcf : lrs_state;231 }232 /* For the first probe, clear all board's tag registers. */233 if (current_tag == 0)234 outb(0xd0, id_port);235 else /* Otherwise kill off already-found boards. */236 outb(0xd8, id_port);237 if (id_read_eeprom(7) != 0x6d50)238 return 1;239 /* Read in EEPROM data, which does contention-select.240 Only the lowest address board will stay "on-line".241 3Com got the byte order backwards. */242 for (i = 0; i < 3; i++)243 phys_addr[i] = htons(id_read_eeprom(i));244#ifdef CONFIG_PNP245 if (!nopnp) {246 /* The ISA PnP 3c509 cards respond to the ID sequence too.247 This check is needed in order not to register them twice. */248 for (i = 0; i < el3_cards; i++) {249 struct el3_private *lp = netdev_priv(el3_devs[i]);250 if (lp->type == EL3_PNP &&251 ether_addr_equal((u8 *)phys_addr, el3_devs[i]->dev_addr)) {252 if (el3_debug > 3)253 pr_debug("3c509 with address %02x %02x %02x %02x %02x %02x was found by ISAPnP\n",254 phys_addr[0] & 0xff, phys_addr[0] >> 8,255 phys_addr[1] & 0xff, phys_addr[1] >> 8,256 phys_addr[2] & 0xff, phys_addr[2] >> 8);257 /* Set the adaptor tag so that the next card can be found. */258 outb(0xd0 + ++current_tag, id_port);259 return 2;260 }261 }262 }263#endif /* CONFIG_PNP */264 return 0;265 266}267 268static void el3_dev_fill(struct net_device *dev, __be16 *phys_addr, int ioaddr,269 int irq, int if_port, enum el3_cardtype type)270{271 struct el3_private *lp = netdev_priv(dev);272 273 eth_hw_addr_set(dev, (u8 *)phys_addr);274 dev->base_addr = ioaddr;275 dev->irq = irq;276 dev->if_port = if_port;277 lp->type = type;278}279 280static int el3_isa_match(struct device *pdev, unsigned int ndev)281{282 struct net_device *dev;283 int ioaddr, isa_irq, if_port, err;284 unsigned int iobase;285 __be16 phys_addr[3];286 287 while ((err = el3_isa_id_sequence(phys_addr)) == 2)288 ; /* Skip to next card when PnP card found */289 if (err == 1)290 return 0;291 292 iobase = id_read_eeprom(8);293 if_port = iobase >> 14;294 ioaddr = 0x200 + ((iobase & 0x1f) << 4);295 if (irq[el3_cards] > 1 && irq[el3_cards] < 16)296 isa_irq = irq[el3_cards];297 else298 isa_irq = id_read_eeprom(9) >> 12;299 300 dev = alloc_etherdev(sizeof(struct el3_private));301 if (!dev)302 return -ENOMEM;303 304 SET_NETDEV_DEV(dev, pdev);305 306 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-isa")) {307 free_netdev(dev);308 return 0;309 }310 311 /* Set the adaptor tag so that the next card can be found. */312 outb(0xd0 + ++current_tag, id_port);313 314 /* Activate the adaptor at the EEPROM location. */315 outb((ioaddr >> 4) | 0xe0, id_port);316 317 EL3WINDOW(0);318 if (inw(ioaddr) != 0x6d50) {319 free_netdev(dev);320 return 0;321 }322 323 /* Free the interrupt so that some other card can use it. */324 outw(0x0f00, ioaddr + WN0_IRQ);325 326 el3_dev_fill(dev, phys_addr, ioaddr, isa_irq, if_port, EL3_ISA);327 dev_set_drvdata(pdev, dev);328 if (el3_common_init(dev)) {329 free_netdev(dev);330 return 0;331 }332 333 el3_devs[el3_cards++] = dev;334 return 1;335}336 337static void el3_isa_remove(struct device *pdev,338 unsigned int ndev)339{340 el3_device_remove(pdev);341 dev_set_drvdata(pdev, NULL);342}343 344#ifdef CONFIG_PM345static int el3_isa_suspend(struct device *dev, unsigned int n,346 pm_message_t state)347{348 current_tag = 0;349 return el3_suspend(dev, state);350}351 352static int el3_isa_resume(struct device *dev, unsigned int n)353{354 struct net_device *ndev = dev_get_drvdata(dev);355 int ioaddr = ndev->base_addr, err;356 __be16 phys_addr[3];357 358 while ((err = el3_isa_id_sequence(phys_addr)) == 2)359 ; /* Skip to next card when PnP card found */360 if (err == 1)361 return 0;362 /* Set the adaptor tag so that the next card can be found. */363 outb(0xd0 + ++current_tag, id_port);364 /* Enable the card */365 outb((ioaddr >> 4) | 0xe0, id_port);366 EL3WINDOW(0);367 if (inw(ioaddr) != 0x6d50)368 return 1;369 /* Free the interrupt so that some other card can use it. */370 outw(0x0f00, ioaddr + WN0_IRQ);371 return el3_resume(dev);372}373#endif374 375static struct isa_driver el3_isa_driver = {376 .match = el3_isa_match,377 .remove = el3_isa_remove,378#ifdef CONFIG_PM379 .suspend = el3_isa_suspend,380 .resume = el3_isa_resume,381#endif382 .driver = {383 .name = "3c509"384 },385};386static int isa_registered;387 388#ifdef CONFIG_PNP389static const struct pnp_device_id el3_pnp_ids[] = {390 { .id = "TCM5090" }, /* 3Com Etherlink III (TP) */391 { .id = "TCM5091" }, /* 3Com Etherlink III */392 { .id = "TCM5094" }, /* 3Com Etherlink III (combo) */393 { .id = "TCM5095" }, /* 3Com Etherlink III (TPO) */394 { .id = "TCM5098" }, /* 3Com Etherlink III (TPC) */395 { .id = "PNP80f7" }, /* 3Com Etherlink III compatible */396 { .id = "PNP80f8" }, /* 3Com Etherlink III compatible */397 { .id = "" }398};399MODULE_DEVICE_TABLE(pnp, el3_pnp_ids);400 401static int el3_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id)402{403 short i;404 int ioaddr, irq, if_port;405 __be16 phys_addr[3];406 struct net_device *dev = NULL;407 int err;408 409 ioaddr = pnp_port_start(pdev, 0);410 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-pnp"))411 return -EBUSY;412 irq = pnp_irq(pdev, 0);413 EL3WINDOW(0);414 for (i = 0; i < 3; i++)415 phys_addr[i] = htons(read_eeprom(ioaddr, i));416 if_port = read_eeprom(ioaddr, 8) >> 14;417 dev = alloc_etherdev(sizeof(struct el3_private));418 if (!dev) {419 release_region(ioaddr, EL3_IO_EXTENT);420 return -ENOMEM;421 }422 SET_NETDEV_DEV(dev, &pdev->dev);423 424 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_PNP);425 pnp_set_drvdata(pdev, dev);426 err = el3_common_init(dev);427 428 if (err) {429 pnp_set_drvdata(pdev, NULL);430 free_netdev(dev);431 return err;432 }433 434 el3_devs[el3_cards++] = dev;435 return 0;436}437 438static void el3_pnp_remove(struct pnp_dev *pdev)439{440 el3_common_remove(pnp_get_drvdata(pdev));441 pnp_set_drvdata(pdev, NULL);442}443 444#ifdef CONFIG_PM445static int el3_pnp_suspend(struct pnp_dev *pdev, pm_message_t state)446{447 return el3_suspend(&pdev->dev, state);448}449 450static int el3_pnp_resume(struct pnp_dev *pdev)451{452 return el3_resume(&pdev->dev);453}454#endif455 456static struct pnp_driver el3_pnp_driver = {457 .name = "3c509",458 .id_table = el3_pnp_ids,459 .probe = el3_pnp_probe,460 .remove = el3_pnp_remove,461#ifdef CONFIG_PM462 .suspend = el3_pnp_suspend,463 .resume = el3_pnp_resume,464#endif465};466static int pnp_registered;467#endif /* CONFIG_PNP */468 469#ifdef CONFIG_EISA470static const struct eisa_device_id el3_eisa_ids[] = {471 { "TCM5090" },472 { "TCM5091" },473 { "TCM5092" },474 { "TCM5093" },475 { "TCM5094" },476 { "TCM5095" },477 { "TCM5098" },478 { "" }479};480MODULE_DEVICE_TABLE(eisa, el3_eisa_ids);481 482static int el3_eisa_probe (struct device *device);483 484static struct eisa_driver el3_eisa_driver = {485 .id_table = el3_eisa_ids,486 .driver = {487 .name = "3c579",488 .probe = el3_eisa_probe,489 .remove = el3_device_remove,490 .suspend = el3_suspend,491 .resume = el3_resume,492 }493};494static int eisa_registered;495#endif496 497static const struct net_device_ops netdev_ops = {498 .ndo_open = el3_open,499 .ndo_stop = el3_close,500 .ndo_start_xmit = el3_start_xmit,501 .ndo_get_stats = el3_get_stats,502 .ndo_set_rx_mode = set_multicast_list,503 .ndo_tx_timeout = el3_tx_timeout,504 .ndo_set_mac_address = eth_mac_addr,505 .ndo_validate_addr = eth_validate_addr,506#ifdef CONFIG_NET_POLL_CONTROLLER507 .ndo_poll_controller = el3_poll_controller,508#endif509};510 511static int el3_common_init(struct net_device *dev)512{513 struct el3_private *lp = netdev_priv(dev);514 int err;515 static const char * const if_names[] = {516 "10baseT", "AUI", "undefined", "BNC"517 };518 519 spin_lock_init(&lp->lock);520 521 if (dev->mem_start & 0x05) { /* xcvr codes 1/3/4/12 */522 dev->if_port = (dev->mem_start & 0x0f);523 } else { /* xcvr codes 0/8 */524 /* use eeprom value, but save user's full-duplex selection */525 dev->if_port |= (dev->mem_start & 0x08);526 }527 528 /* The EL3-specific entries in the device structure. */529 dev->netdev_ops = &netdev_ops;530 dev->watchdog_timeo = TX_TIMEOUT;531 dev->ethtool_ops = ðtool_ops;532 533 err = register_netdev(dev);534 if (err) {535 pr_err("Failed to register 3c5x9 at %#3.3lx, IRQ %d.\n",536 dev->base_addr, dev->irq);537 release_region(dev->base_addr, EL3_IO_EXTENT);538 return err;539 }540 541 pr_info("%s: 3c5x9 found at %#3.3lx, %s port, address %pM, IRQ %d.\n",542 dev->name, dev->base_addr, if_names[(dev->if_port & 0x03)],543 dev->dev_addr, dev->irq);544 545 return 0;546 547}548 549static void el3_common_remove (struct net_device *dev)550{551 unregister_netdev (dev);552 release_region(dev->base_addr, EL3_IO_EXTENT);553 free_netdev (dev);554}555 556#ifdef CONFIG_EISA557static int el3_eisa_probe(struct device *device)558{559 short i;560 int ioaddr, irq, if_port;561 __be16 phys_addr[3];562 struct net_device *dev = NULL;563 struct eisa_device *edev;564 int err;565 566 /* Yeepee, The driver framework is calling us ! */567 edev = to_eisa_device (device);568 ioaddr = edev->base_addr;569 570 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c579-eisa"))571 return -EBUSY;572 573 /* Change the register set to the configuration window 0. */574 outw(SelectWindow | 0, ioaddr + 0xC80 + EL3_CMD);575 576 irq = inw(ioaddr + WN0_IRQ) >> 12;577 if_port = inw(ioaddr + 6)>>14;578 for (i = 0; i < 3; i++)579 phys_addr[i] = htons(read_eeprom(ioaddr, i));580 581 /* Restore the "Product ID" to the EEPROM read register. */582 read_eeprom(ioaddr, 3);583 584 dev = alloc_etherdev(sizeof (struct el3_private));585 if (dev == NULL) {586 release_region(ioaddr, EL3_IO_EXTENT);587 return -ENOMEM;588 }589 590 SET_NETDEV_DEV(dev, device);591 592 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_EISA);593 eisa_set_drvdata (edev, dev);594 err = el3_common_init(dev);595 596 if (err) {597 eisa_set_drvdata (edev, NULL);598 free_netdev(dev);599 return err;600 }601 602 el3_devs[el3_cards++] = dev;603 return 0;604}605#endif606 607/* This remove works for all device types.608 *609 * The net dev must be stored in the driver data field */610static int el3_device_remove(struct device *device)611{612 struct net_device *dev;613 614 dev = dev_get_drvdata(device);615 616 el3_common_remove (dev);617 return 0;618}619 620/* Read a word from the EEPROM using the regular EEPROM access register.621 Assume that we are in register window zero.622 */623static ushort read_eeprom(int ioaddr, int index)624{625 outw(EEPROM_READ + index, ioaddr + 10);626 /* Pause for at least 162 us. for the read to take place.627 Some chips seem to require much longer */628 mdelay(2);629 return inw(ioaddr + 12);630}631 632/* Read a word from the EEPROM when in the ISA ID probe state. */633static ushort id_read_eeprom(int index)634{635 int bit, word = 0;636 637 /* Issue read command, and pause for at least 162 us. for it to complete.638 Assume extra-fast 16Mhz bus. */639 outb(EEPROM_READ + index, id_port);640 641 /* Pause for at least 162 us. for the read to take place. */642 /* Some chips seem to require much longer */643 mdelay(4);644 645 for (bit = 15; bit >= 0; bit--)646 word = (word << 1) + (inb(id_port) & 0x01);647 648 if (el3_debug > 3)649 pr_debug(" 3c509 EEPROM word %d %#4.4x.\n", index, word);650 651 return word;652}653 654 655static int656el3_open(struct net_device *dev)657{658 int ioaddr = dev->base_addr;659 int i;660 661 outw(TxReset, ioaddr + EL3_CMD);662 outw(RxReset, ioaddr + EL3_CMD);663 outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);664 665 i = request_irq(dev->irq, el3_interrupt, 0, dev->name, dev);666 if (i)667 return i;668 669 EL3WINDOW(0);670 if (el3_debug > 3)671 pr_debug("%s: Opening, IRQ %d status@%x %4.4x.\n", dev->name,672 dev->irq, ioaddr + EL3_STATUS, inw(ioaddr + EL3_STATUS));673 674 el3_up(dev);675 676 if (el3_debug > 3)677 pr_debug("%s: Opened 3c509 IRQ %d status %4.4x.\n",678 dev->name, dev->irq, inw(ioaddr + EL3_STATUS));679 680 return 0;681}682 683static void684el3_tx_timeout (struct net_device *dev, unsigned int txqueue)685{686 int ioaddr = dev->base_addr;687 688 /* Transmitter timeout, serious problems. */689 pr_warn("%s: transmit timed out, Tx_status %2.2x status %4.4x Tx FIFO room %d\n",690 dev->name, inb(ioaddr + TX_STATUS), inw(ioaddr + EL3_STATUS),691 inw(ioaddr + TX_FREE));692 dev->stats.tx_errors++;693 netif_trans_update(dev); /* prevent tx timeout */694 /* Issue TX_RESET and TX_START commands. */695 outw(TxReset, ioaddr + EL3_CMD);696 outw(TxEnable, ioaddr + EL3_CMD);697 netif_wake_queue(dev);698}699 700 701static netdev_tx_t702el3_start_xmit(struct sk_buff *skb, struct net_device *dev)703{704 struct el3_private *lp = netdev_priv(dev);705 int ioaddr = dev->base_addr;706 unsigned long flags;707 708 netif_stop_queue (dev);709 710 dev->stats.tx_bytes += skb->len;711 712 if (el3_debug > 4) {713 pr_debug("%s: el3_start_xmit(length = %u) called, status %4.4x.\n",714 dev->name, skb->len, inw(ioaddr + EL3_STATUS));715 }716 /*717 * We lock the driver against other processors. Note718 * we don't need to lock versus the IRQ as we suspended719 * that. This means that we lose the ability to take720 * an RX during a TX upload. That sucks a bit with SMP721 * on an original 3c509 (2K buffer)722 *723 * Using disable_irq stops us crapping on other724 * time sensitive devices.725 */726 727 spin_lock_irqsave(&lp->lock, flags);728 729 /* Put out the doubleword header... */730 outw(skb->len, ioaddr + TX_FIFO);731 outw(0x00, ioaddr + TX_FIFO);732 /* ... and the packet rounded to a doubleword. */733 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);734 735 if (inw(ioaddr + TX_FREE) > 1536)736 netif_start_queue(dev);737 else738 /* Interrupt us when the FIFO has room for max-sized packet. */739 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);740 741 spin_unlock_irqrestore(&lp->lock, flags);742 743 dev_consume_skb_any (skb);744 745 /* Clear the Tx status stack. */746 {747 short tx_status;748 int i = 4;749 750 while (--i > 0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {751 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;752 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);753 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);754 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */755 }756 }757 return NETDEV_TX_OK;758}759 760/* The EL3 interrupt handler. */761static irqreturn_t762el3_interrupt(int irq, void *dev_id)763{764 struct net_device *dev = dev_id;765 struct el3_private *lp;766 int ioaddr, status;767 int i = max_interrupt_work;768 769 lp = netdev_priv(dev);770 spin_lock(&lp->lock);771 772 ioaddr = dev->base_addr;773 774 if (el3_debug > 4) {775 status = inw(ioaddr + EL3_STATUS);776 pr_debug("%s: interrupt, status %4.4x.\n", dev->name, status);777 }778 779 while ((status = inw(ioaddr + EL3_STATUS)) &780 (IntLatch | RxComplete | StatsFull)) {781 782 if (status & RxComplete)783 el3_rx(dev);784 785 if (status & TxAvailable) {786 if (el3_debug > 5)787 pr_debug(" TX room bit was handled.\n");788 /* There's room in the FIFO for a full-sized packet. */789 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);790 netif_wake_queue (dev);791 }792 if (status & (AdapterFailure | RxEarly | StatsFull | TxComplete)) {793 /* Handle all uncommon interrupts. */794 if (status & StatsFull) /* Empty statistics. */795 update_stats(dev);796 if (status & RxEarly) { /* Rx early is unused. */797 el3_rx(dev);798 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);799 }800 if (status & TxComplete) { /* Really Tx error. */801 short tx_status;802 int i = 4;803 804 while (--i>0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {805 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;806 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);807 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);808 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */809 }810 }811 if (status & AdapterFailure) {812 /* Adapter failure requires Rx reset and reinit. */813 outw(RxReset, ioaddr + EL3_CMD);814 /* Set the Rx filter to the current state. */815 outw(SetRxFilter | RxStation | RxBroadcast816 | (dev->flags & IFF_ALLMULTI ? RxMulticast : 0)817 | (dev->flags & IFF_PROMISC ? RxProm : 0),818 ioaddr + EL3_CMD);819 outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */820 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);821 }822 }823 824 if (--i < 0) {825 pr_err("%s: Infinite loop in interrupt, status %4.4x.\n",826 dev->name, status);827 /* Clear all interrupts. */828 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);829 break;830 }831 /* Acknowledge the IRQ. */832 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); /* Ack IRQ */833 }834 835 if (el3_debug > 4) {836 pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name,837 inw(ioaddr + EL3_STATUS));838 }839 spin_unlock(&lp->lock);840 return IRQ_HANDLED;841}842 843 844#ifdef CONFIG_NET_POLL_CONTROLLER845/*846 * Polling receive - used by netconsole and other diagnostic tools847 * to allow network i/o with interrupts disabled.848 */849static void el3_poll_controller(struct net_device *dev)850{851 disable_irq(dev->irq);852 el3_interrupt(dev->irq, dev);853 enable_irq(dev->irq);854}855#endif856 857static struct net_device_stats *858el3_get_stats(struct net_device *dev)859{860 struct el3_private *lp = netdev_priv(dev);861 unsigned long flags;862 863 /*864 * This is fast enough not to bother with disable IRQ865 * stuff.866 */867 868 spin_lock_irqsave(&lp->lock, flags);869 update_stats(dev);870 spin_unlock_irqrestore(&lp->lock, flags);871 return &dev->stats;872}873 874/* Update statistics. We change to register window 6, so this should be run875 single-threaded if the device is active. This is expected to be a rare876 operation, and it's simpler for the rest of the driver to assume that877 window 1 is always valid rather than use a special window-state variable.878 */879static void update_stats(struct net_device *dev)880{881 int ioaddr = dev->base_addr;882 883 if (el3_debug > 5)884 pr_debug(" Updating the statistics.\n");885 /* Turn off statistics updates while reading. */886 outw(StatsDisable, ioaddr + EL3_CMD);887 /* Switch to the stats window, and read everything. */888 EL3WINDOW(6);889 dev->stats.tx_carrier_errors += inb(ioaddr + 0);890 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);891 /* Multiple collisions. */ inb(ioaddr + 2);892 dev->stats.collisions += inb(ioaddr + 3);893 dev->stats.tx_window_errors += inb(ioaddr + 4);894 dev->stats.rx_fifo_errors += inb(ioaddr + 5);895 dev->stats.tx_packets += inb(ioaddr + 6);896 /* Rx packets */ inb(ioaddr + 7);897 /* Tx deferrals */ inb(ioaddr + 8);898 inw(ioaddr + 10); /* Total Rx and Tx octets. */899 inw(ioaddr + 12);900 901 /* Back to window 1, and turn statistics back on. */902 EL3WINDOW(1);903 outw(StatsEnable, ioaddr + EL3_CMD);904}905 906static int907el3_rx(struct net_device *dev)908{909 int ioaddr = dev->base_addr;910 short rx_status;911 912 if (el3_debug > 5)913 pr_debug(" In rx_packet(), status %4.4x, rx_status %4.4x.\n",914 inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));915 while ((rx_status = inw(ioaddr + RX_STATUS)) > 0) {916 if (rx_status & 0x4000) { /* Error, update stats. */917 short error = rx_status & 0x3800;918 919 outw(RxDiscard, ioaddr + EL3_CMD);920 dev->stats.rx_errors++;921 switch (error) {922 case 0x0000: dev->stats.rx_over_errors++; break;923 case 0x0800: dev->stats.rx_length_errors++; break;924 case 0x1000: dev->stats.rx_frame_errors++; break;925 case 0x1800: dev->stats.rx_length_errors++; break;926 case 0x2000: dev->stats.rx_frame_errors++; break;927 case 0x2800: dev->stats.rx_crc_errors++; break;928 }929 } else {930 short pkt_len = rx_status & 0x7ff;931 struct sk_buff *skb;932 933 skb = netdev_alloc_skb(dev, pkt_len + 5);934 if (el3_debug > 4)935 pr_debug("Receiving packet size %d status %4.4x.\n",936 pkt_len, rx_status);937 if (skb != NULL) {938 skb_reserve(skb, 2); /* Align IP on 16 byte */939 940 /* 'skb->data' points to the start of sk_buff data area. */941 insl(ioaddr + RX_FIFO, skb_put(skb,pkt_len),942 (pkt_len + 3) >> 2);943 944 outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */945 skb->protocol = eth_type_trans(skb,dev);946 netif_rx(skb);947 dev->stats.rx_bytes += pkt_len;948 dev->stats.rx_packets++;949 continue;950 }951 outw(RxDiscard, ioaddr + EL3_CMD);952 dev->stats.rx_dropped++;953 if (el3_debug)954 pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n",955 dev->name, pkt_len);956 }957 inw(ioaddr + EL3_STATUS); /* Delay. */958 while (inw(ioaddr + EL3_STATUS) & 0x1000)959 pr_debug(" Waiting for 3c509 to discard packet, status %x.\n",960 inw(ioaddr + EL3_STATUS) );961 }962 963 return 0;964}965 966/*967 * Set or clear the multicast filter for this adaptor.968 */969static void970set_multicast_list(struct net_device *dev)971{972 unsigned long flags;973 struct el3_private *lp = netdev_priv(dev);974 int ioaddr = dev->base_addr;975 int mc_count = netdev_mc_count(dev);976 977 if (el3_debug > 1) {978 static int old;979 if (old != mc_count) {980 old = mc_count;981 pr_debug("%s: Setting Rx mode to %d addresses.\n",982 dev->name, mc_count);983 }984 }985 spin_lock_irqsave(&lp->lock, flags);986 if (dev->flags&IFF_PROMISC) {987 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,988 ioaddr + EL3_CMD);989 }990 else if (mc_count || (dev->flags&IFF_ALLMULTI)) {991 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast, ioaddr + EL3_CMD);992 }993 else994 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);995 spin_unlock_irqrestore(&lp->lock, flags);996}997 998static int999el3_close(struct net_device *dev)1000{1001 int ioaddr = dev->base_addr;1002 struct el3_private *lp = netdev_priv(dev);1003 1004 if (el3_debug > 2)1005 pr_debug("%s: Shutting down ethercard.\n", dev->name);1006 1007 el3_down(dev);1008 1009 free_irq(dev->irq, dev);1010 /* Switching back to window 0 disables the IRQ. */1011 EL3WINDOW(0);1012 if (lp->type != EL3_EISA) {1013 /* But we explicitly zero the IRQ line select anyway. Don't do1014 * it on EISA cards, it prevents the module from getting an1015 * IRQ after unload+reload... */1016 outw(0x0f00, ioaddr + WN0_IRQ);1017 }1018 1019 return 0;1020}1021 1022static int1023el3_link_ok(struct net_device *dev)1024{1025 int ioaddr = dev->base_addr;1026 u16 tmp;1027 1028 EL3WINDOW(4);1029 tmp = inw(ioaddr + WN4_MEDIA);1030 EL3WINDOW(1);1031 return tmp & (1<<11);1032}1033 1034static void1035el3_netdev_get_ecmd(struct net_device *dev, struct ethtool_link_ksettings *cmd)1036{1037 u16 tmp;1038 int ioaddr = dev->base_addr;1039 u32 supported;1040 1041 EL3WINDOW(0);1042 /* obtain current transceiver via WN4_MEDIA? */1043 tmp = inw(ioaddr + WN0_ADDR_CONF);1044 switch (tmp >> 14) {1045 case 0:1046 cmd->base.port = PORT_TP;1047 break;1048 case 1:1049 cmd->base.port = PORT_AUI;1050 break;1051 case 3:1052 cmd->base.port = PORT_BNC;1053 break;1054 default:1055 break;1056 }1057 1058 cmd->base.duplex = DUPLEX_HALF;1059 supported = 0;1060 tmp = inw(ioaddr + WN0_CONF_CTRL);1061 if (tmp & (1<<13))1062 supported |= SUPPORTED_AUI;1063 if (tmp & (1<<12))1064 supported |= SUPPORTED_BNC;1065 if (tmp & (1<<9)) {1066 supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half |1067 SUPPORTED_10baseT_Full; /* hmm... */1068 EL3WINDOW(4);1069 tmp = inw(ioaddr + WN4_NETDIAG);1070 if (tmp & FD_ENABLE)1071 cmd->base.duplex = DUPLEX_FULL;1072 }1073 1074 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,1075 supported);1076 cmd->base.speed = SPEED_10;1077 EL3WINDOW(1);1078}1079 1080static int1081el3_netdev_set_ecmd(struct net_device *dev,1082 const struct ethtool_link_ksettings *cmd)1083{1084 u16 tmp;1085 int ioaddr = dev->base_addr;1086 1087 if (cmd->base.speed != SPEED_10)1088 return -EINVAL;1089 if ((cmd->base.duplex != DUPLEX_HALF) &&1090 (cmd->base.duplex != DUPLEX_FULL))1091 return -EINVAL;1092 1093 /* change XCVR type */1094 EL3WINDOW(0);1095 tmp = inw(ioaddr + WN0_ADDR_CONF);1096 switch (cmd->base.port) {1097 case PORT_TP:1098 tmp &= ~(3<<14);1099 dev->if_port = 0;1100 break;1101 case PORT_AUI:1102 tmp |= (1<<14);1103 dev->if_port = 1;1104 break;1105 case PORT_BNC:1106 tmp |= (3<<14);1107 dev->if_port = 3;1108 break;1109 default:1110 return -EINVAL;1111 }1112 1113 outw(tmp, ioaddr + WN0_ADDR_CONF);1114 if (dev->if_port == 3) {1115 /* fire up the DC-DC convertor if BNC gets enabled */1116 tmp = inw(ioaddr + WN0_ADDR_CONF);1117 if (tmp & (3 << 14)) {1118 outw(StartCoax, ioaddr + EL3_CMD);1119 udelay(800);1120 } else1121 return -EIO;1122 }1123 1124 EL3WINDOW(4);1125 tmp = inw(ioaddr + WN4_NETDIAG);1126 if (cmd->base.duplex == DUPLEX_FULL)1127 tmp |= FD_ENABLE;1128 else1129 tmp &= ~FD_ENABLE;1130 outw(tmp, ioaddr + WN4_NETDIAG);1131 EL3WINDOW(1);1132 1133 return 0;1134}1135 1136static void el3_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)1137{1138 strscpy(info->driver, DRV_NAME, sizeof(info->driver));1139}1140 1141static int el3_get_link_ksettings(struct net_device *dev,1142 struct ethtool_link_ksettings *cmd)1143{1144 struct el3_private *lp = netdev_priv(dev);1145 1146 spin_lock_irq(&lp->lock);1147 el3_netdev_get_ecmd(dev, cmd);1148 spin_unlock_irq(&lp->lock);1149 return 0;1150}1151 1152static int el3_set_link_ksettings(struct net_device *dev,1153 const struct ethtool_link_ksettings *cmd)1154{1155 struct el3_private *lp = netdev_priv(dev);1156 int ret;1157 1158 spin_lock_irq(&lp->lock);1159 ret = el3_netdev_set_ecmd(dev, cmd);1160 spin_unlock_irq(&lp->lock);1161 return ret;1162}1163 1164static u32 el3_get_link(struct net_device *dev)1165{1166 struct el3_private *lp = netdev_priv(dev);1167 u32 ret;1168 1169 spin_lock_irq(&lp->lock);1170 ret = el3_link_ok(dev);1171 spin_unlock_irq(&lp->lock);1172 return ret;1173}1174 1175static u32 el3_get_msglevel(struct net_device *dev)1176{1177 return el3_debug;1178}1179 1180static void el3_set_msglevel(struct net_device *dev, u32 v)1181{1182 el3_debug = v;1183}1184 1185static const struct ethtool_ops ethtool_ops = {1186 .get_drvinfo = el3_get_drvinfo,1187 .get_link = el3_get_link,1188 .get_msglevel = el3_get_msglevel,1189 .set_msglevel = el3_set_msglevel,1190 .get_link_ksettings = el3_get_link_ksettings,1191 .set_link_ksettings = el3_set_link_ksettings,1192};1193 1194static void1195el3_down(struct net_device *dev)1196{1197 int ioaddr = dev->base_addr;1198 1199 netif_stop_queue(dev);1200 1201 /* Turn off statistics ASAP. We update lp->stats below. */1202 outw(StatsDisable, ioaddr + EL3_CMD);1203 1204 /* Disable the receiver and transmitter. */1205 outw(RxDisable, ioaddr + EL3_CMD);1206 outw(TxDisable, ioaddr + EL3_CMD);1207 1208 if (dev->if_port == 3)1209 /* Turn off thinnet power. Green! */1210 outw(StopCoax, ioaddr + EL3_CMD);1211 else if (dev->if_port == 0) {1212 /* Disable link beat and jabber, if_port may change here next open(). */1213 EL3WINDOW(4);1214 outw(inw(ioaddr + WN4_MEDIA) & ~MEDIA_TP, ioaddr + WN4_MEDIA);1215 }1216 1217 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);1218 1219 update_stats(dev);1220}1221 1222static void1223el3_up(struct net_device *dev)1224{1225 int i, sw_info, net_diag;1226 int ioaddr = dev->base_addr;1227 1228 /* Activating the board required and does no harm otherwise */1229 outw(0x0001, ioaddr + 4);1230 1231 /* Set the IRQ line. */1232 outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ);1233 1234 /* Set the station address in window 2 each time opened. */1235 EL3WINDOW(2);1236 1237 for (i = 0; i < 6; i++)1238 outb(dev->dev_addr[i], ioaddr + i);1239 1240 if ((dev->if_port & 0x03) == 3) /* BNC interface */1241 /* Start the thinnet transceiver. We should really wait 50ms...*/1242 outw(StartCoax, ioaddr + EL3_CMD);1243 else if ((dev->if_port & 0x03) == 0) { /* 10baseT interface */1244 /* Combine secondary sw_info word (the adapter level) and primary1245 sw_info word (duplex setting plus other useless bits) */1246 EL3WINDOW(0);1247 sw_info = (read_eeprom(ioaddr, 0x14) & 0x400f) |1248 (read_eeprom(ioaddr, 0x0d) & 0xBff0);1249 1250 EL3WINDOW(4);1251 net_diag = inw(ioaddr + WN4_NETDIAG);1252 net_diag = (net_diag | FD_ENABLE); /* temporarily assume full-duplex will be set */1253 pr_info("%s: ", dev->name);1254 switch (dev->if_port & 0x0c) {1255 case 12:1256 /* force full-duplex mode if 3c5x9b */1257 if (sw_info & 0x000f) {1258 pr_cont("Forcing 3c5x9b full-duplex mode");1259 break;1260 }1261 fallthrough;1262 case 8:1263 /* set full-duplex mode based on eeprom config setting */1264 if ((sw_info & 0x000f) && (sw_info & 0x8000)) {1265 pr_cont("Setting 3c5x9b full-duplex mode (from EEPROM configuration bit)");1266 break;1267 }1268 fallthrough;1269 default:1270 /* xcvr=(0 || 4) OR user has an old 3c5x9 non "B" model */1271 pr_cont("Setting 3c5x9/3c5x9B half-duplex mode");1272 net_diag = (net_diag & ~FD_ENABLE); /* disable full duplex */1273 }1274 1275 outw(net_diag, ioaddr + WN4_NETDIAG);1276 pr_cont(" if_port: %d, sw_info: %4.4x\n", dev->if_port, sw_info);1277 if (el3_debug > 3)1278 pr_debug("%s: 3c5x9 net diag word is now: %4.4x.\n", dev->name, net_diag);1279 /* Enable link beat and jabber check. */1280 outw(inw(ioaddr + WN4_MEDIA) | MEDIA_TP, ioaddr + WN4_MEDIA);1281 }1282 1283 /* Switch to the stats window, and clear all stats by reading. */1284 outw(StatsDisable, ioaddr + EL3_CMD);1285 EL3WINDOW(6);1286 for (i = 0; i < 9; i++)1287 inb(ioaddr + i);1288 inw(ioaddr + 10);1289 inw(ioaddr + 12);1290 1291 /* Switch to register set 1 for normal use. */1292 EL3WINDOW(1);1293 1294 /* Accept b-case and phys addr only. */1295 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);1296 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */1297 1298 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */1299 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */1300 /* Allow status bits to be seen. */1301 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);1302 /* Ack all pending events, and set active indicator mask. */1303 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,1304 ioaddr + EL3_CMD);1305 outw(SetIntrEnb | IntLatch|TxAvailable|TxComplete|RxComplete|StatsFull,1306 ioaddr + EL3_CMD);1307 1308 netif_start_queue(dev);1309}1310 1311/* Power Management support functions */1312#ifdef CONFIG_PM1313 1314static int1315el3_suspend(struct device *pdev, pm_message_t state)1316{1317 unsigned long flags;1318 struct net_device *dev;1319 struct el3_private *lp;1320 int ioaddr;1321 1322 dev = dev_get_drvdata(pdev);1323 lp = netdev_priv(dev);1324 ioaddr = dev->base_addr;1325 1326 spin_lock_irqsave(&lp->lock, flags);1327 1328 if (netif_running(dev))1329 netif_device_detach(dev);1330 1331 el3_down(dev);1332 outw(PowerDown, ioaddr + EL3_CMD);1333 1334 spin_unlock_irqrestore(&lp->lock, flags);1335 return 0;1336}1337 1338static int1339el3_resume(struct device *pdev)1340{1341 unsigned long flags;1342 struct net_device *dev;1343 struct el3_private *lp;1344 int ioaddr;1345 1346 dev = dev_get_drvdata(pdev);1347 lp = netdev_priv(dev);1348 ioaddr = dev->base_addr;1349 1350 spin_lock_irqsave(&lp->lock, flags);1351 1352 outw(PowerUp, ioaddr + EL3_CMD);1353 EL3WINDOW(0);1354 el3_up(dev);1355 1356 if (netif_running(dev))1357 netif_device_attach(dev);1358 1359 spin_unlock_irqrestore(&lp->lock, flags);1360 return 0;1361}1362 1363#endif /* CONFIG_PM */1364 1365module_param(debug,int, 0);1366module_param_hw_array(irq, int, irq, NULL, 0);1367module_param(max_interrupt_work, int, 0);1368MODULE_PARM_DESC(debug, "debug level (0-6)");1369MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");1370MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt");1371#ifdef CONFIG_PNP1372module_param(nopnp, int, 0);1373MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)");1374#endif /* CONFIG_PNP */1375MODULE_DESCRIPTION("3Com Etherlink III (3c509, 3c509B, 3c529, 3c579) ethernet driver");1376MODULE_LICENSE("GPL");1377 1378static int __init el3_init_module(void)1379{1380 int ret = 0;1381 1382 if (debug >= 0)1383 el3_debug = debug;1384 1385#ifdef CONFIG_PNP1386 if (!nopnp) {1387 ret = pnp_register_driver(&el3_pnp_driver);1388 if (!ret)1389 pnp_registered = 1;1390 }1391#endif1392 /* Select an open I/O location at 0x1*0 to do ISA contention select. */1393 /* Start with 0x110 to avoid some sound cards.*/1394 for (id_port = 0x110 ; id_port < 0x200; id_port += 0x10) {1395 if (!request_region(id_port, 1, "3c509-control"))1396 continue;1397 outb(0x00, id_port);1398 outb(0xff, id_port);1399 if (inb(id_port) & 0x01)1400 break;1401 else1402 release_region(id_port, 1);1403 }1404 if (id_port >= 0x200) {1405 id_port = 0;1406 pr_err("No I/O port available for 3c509 activation.\n");1407 } else {1408 ret = isa_register_driver(&el3_isa_driver, EL3_MAX_CARDS);1409 if (!ret)1410 isa_registered = 1;1411 }1412#ifdef CONFIG_EISA1413 ret = eisa_driver_register(&el3_eisa_driver);1414 if (!ret)1415 eisa_registered = 1;1416#endif1417 1418#ifdef CONFIG_PNP1419 if (pnp_registered)1420 ret = 0;1421#endif1422 if (isa_registered)1423 ret = 0;1424#ifdef CONFIG_EISA1425 if (eisa_registered)1426 ret = 0;1427#endif1428 return ret;1429}1430 1431static void __exit el3_cleanup_module(void)1432{1433#ifdef CONFIG_PNP1434 if (pnp_registered)1435 pnp_unregister_driver(&el3_pnp_driver);1436#endif1437 if (isa_registered)1438 isa_unregister_driver(&el3_isa_driver);1439 if (id_port)1440 release_region(id_port, 1);1441#ifdef CONFIG_EISA1442 if (eisa_registered)1443 eisa_driver_unregister(&el3_eisa_driver);1444#endif1445}1446 1447module_init (el3_init_module);1448module_exit (el3_cleanup_module);1449