1 // SPDX-License-Identifier: GPL-2.0 2 /* 3c509.c: A 3c509 EtherLink3 ethernet driver for linux. */ 3 /* 4 * Written 1993-2000 by Donald Becker. 5 * 6 * Copyright 1994-2000 by Donald Becker. 7 * Copyright 1993 United States Government as represented by the 8 * Director, National Security Agency. This software may be used and 9 * distributed according to the terms of the GNU General Public License, 10 * incorporated herein by reference. 11 * 12 * This driver is for the 3Com EtherLinkIII series. 13 * 14 * The author may be reached as becker@scyld.com, or C/O 15 * Scyld Computing Corporation 16 * 410 Severn Ave., Suite 210 17 * Annapolis MD 21403 18 * 19 * Known limitations: 20 * Because of the way 3c509 ISA detection works it's difficult to predict 21 * a priori which of several ISA-mode cards will be detected first. 22 * 23 * This driver does not use predictive interrupt mode, resulting in higher 24 * packet latency but lower overhead. If interrupts are disabled for an 25 * unusually long time it could also result in missed packets, but in 26 * practice this rarely happens. 27 * 28 * 29 * FIXES: 30 * Alan Cox: Removed the 'Unexpected interrupt' bug. 31 * Michael Meskes: Upgraded to Donald Becker's version 1.07. 32 * Alan Cox: Increased the eeprom delay. Regardless of 33 * what the docs say some people definitely 34 * get problems with lower (but in card spec) 35 * delays. 36 * v1.10 4/21/97 Fixed module code so that multiple cards may be 37 * detected, other cleanups. -djb 38 * Andrea Arcangeli: Upgraded to Donald Becker's version 1.12. 39 * Rick Payne: Fixed SMP race condition. 40 * v1.13 9/8/97 Made 'max_interrupt_work' an insmod-settable 41 * variable. -djb 42 * v1.14 10/15/97 Avoided waiting..discard message for fast 43 * machines. -djb 44 * v1.15 1/31/98 Faster recovery for Tx errors. -djb 45 * v1.16 2/3/98 Different ID port handling to avoid sound 46 * cards. -djb 47 * v1.18 12Mar2001 Andrew Morton 48 * - Avoid bogus detect of 3c590's (Andrzej Krzysztofowicz) 49 * - Reviewed against 1.18 from scyld.com 50 * v1.18a 17Nov2001 Jeff Garzik <jgarzik@pobox.com> 51 * - ethtool support. 52 * v1.18b 1Mar2002 Zwane Mwaikambo <zwane@commfireservices.com> 53 * - Power Management support. 54 * v1.18c 1Mar2002 David Ruggiero <jdr@farfalle.com> 55 * - Full duplex support. 56 * v1.19 16Oct2002 Zwane Mwaikambo <zwane@linuxpower.ca> 57 * - Additional ethtool features. 58 * v1.19a 28Oct2002 David Ruggiero <jdr@farfalle.com> 59 * - Increase *read_eeprom udelay to workaround oops with 60 * 2 cards. 61 * v1.19b 08Nov2002 Marc Zyngier <maz@wild-wind.fr.eu.org> 62 * - Introduce driver model for EISA cards. 63 * v1.20 04Feb2008 Ondrej Zary <linux@rainbow-software.org> 64 * - convert to isa_driver and pnp_driver and some 65 * cleanups. 66 */ 67 68 #define DRV_NAME "3c509" 69 70 /* A few values that may be tweaked. */ 71 72 /* Time in jiffies before concluding the transmitter is hung. */ 73 #define TX_TIMEOUT (400 * HZ / 1000) 74 75 #include <linux/bitops.h> 76 #include <linux/delay.h> /* for udelay() */ 77 #include <linux/device.h> 78 #include <linux/eisa.h> 79 #include <linux/errno.h> 80 #include <linux/etherdevice.h> 81 #include <linux/ethtool.h> 82 #include <linux/in.h> 83 #include <linux/init.h> 84 #include <linux/interrupt.h> 85 #include <linux/io.h> 86 #include <linux/ioport.h> 87 #include <linux/isa.h> 88 #include <linux/module.h> 89 #include <linux/netdevice.h> 90 #include <linux/pm.h> 91 #include <linux/pnp.h> 92 #include <linux/skbuff.h> 93 #include <linux/spinlock.h> 94 #include <linux/string.h> 95 #include <linux/uaccess.h> 96 97 #include <asm/irq.h> 98 99 #ifdef EL3_DEBUG 100 static int el3_debug = EL3_DEBUG; 101 #else 102 static int el3_debug = 2; 103 #endif 104 105 /* Used to do a global count of all the cards in the system. Must be 106 * a global variable so that the eisa probe routines can increment it. 107 */ 108 static int el3_cards; 109 #define EL3_MAX_CARDS 8 110 111 /* 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 */ 115 /* Offsets from base I/O address. */ 116 #define EL3_DATA 0x00 117 #define EL3_CMD 0x0e 118 #define EL3_STATUS 0x0e 119 #define EEPROM_READ 0x80 120 121 #define EL3_IO_EXTENT 16 122 123 #define EL3WINDOW(win_num) outw(SELECT_WINDOW + (win_num), ioaddr + EL3_CMD) 124 125 /* The top five bits written to EL3_CMD are a command, the lower 126 * 11 bits are the parameter, if applicable. 127 */ 128 enum c509cmd { 129 TOTAL_RESET = 0 << 11, 130 SELECT_WINDOW = 1 << 11, 131 START_COAX = 2 << 11, 132 RX_DISABLE = 3 << 11, 133 RX_ENABLE = 4 << 11, 134 RX_RESET = 5 << 11, 135 RX_DISCARD = 8 << 11, 136 TX_ENABLE = 9 << 11, 137 TX_DISABLE = 10 << 11, 138 TX_RESET = 11 << 11, 139 FAKE_INTR = 12 << 11, 140 ACK_INTR = 13 << 11, 141 SET_INTR_ENB = 14 << 11, 142 SET_STATUS_ENB = 15 << 11, 143 SET_RX_FILTER = 16 << 11, 144 SET_RX_THRESHOLD = 17 << 11, 145 SET_TX_THRESHOLD = 18 << 11, 146 SET_TX_START = 19 << 11, 147 STATS_ENABLE = 21 << 11, 148 STATS_DISABLE = 22 << 11, 149 STOP_COAX = 23 << 11, 150 POWER_UP = 27 << 11, 151 POWER_DOWN = 28 << 11, 152 POWER_AUTO = 29 << 11, 153 }; 154 155 enum c509status { 156 INT_LATCH = 0x0001, 157 ADAPTER_FAILURE = 0x0002, 158 TX_COMPLETE = 0x0004, 159 TX_AVAILABLE = 0x0008, 160 RX_COMPLETE = 0x0010, 161 RX_EARLY = 0x0020, 162 INT_REQ = 0x0040, 163 STATS_FULL = 0x0080, 164 CMD_BUSY = 0x1000, 165 }; 166 167 /* The SET_RX_FILTER command accepts the following classes: */ 168 enum rx_filter { 169 RX_STATION = 1, 170 RX_MULTICAST = 2, 171 RX_BROADCAST = 4, 172 RX_PROM = 8, 173 }; 174 175 /* Register window 1 offsets, the window used in normal operation. */ 176 #define TX_FIFO 0x00 177 #define RX_FIFO 0x00 178 #define RX_STATUS 0x08 179 #define TX_STATUS 0x0B 180 #define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */ 181 182 #define WN0_CONF_CTRL 0x04 /* Window 0: Configuration control register. */ 183 #define WN0_ADDR_CONF 0x06 /* Window 0: Address configuration register. */ 184 #define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */ 185 #define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */ 186 #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */ 187 #define WN4_NETDIAG 0x06 /* Window 4: Net diagnostic. */ 188 #define FD_ENABLE 0x8000 /* Enable full-duplex ("external loopback"). */ 189 190 /* 191 * Must be a power of two (we use a binary and in the 192 * circular queue). 193 */ 194 #define SKB_QUEUE_SIZE 64 195 196 enum el3_cardtype { EL3_ISA, EL3_PNP, EL3_EISA }; 197 198 struct el3_private { 199 /* for device access */ 200 spinlock_t lock; 201 /* skb send-queue */ 202 int head, size; 203 struct sk_buff *queue[SKB_QUEUE_SIZE]; 204 enum el3_cardtype type; 205 }; 206 207 static int id_port; 208 static int current_tag; 209 static struct net_device *el3_devs[EL3_MAX_CARDS]; 210 211 /* Parameters that may be passed into the module. */ 212 static int debug = -1; 213 static int irq[] = {-1, -1, -1, -1, -1, -1, -1, -1}; 214 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ 215 static int max_interrupt_work = 10; 216 #ifdef CONFIG_PNP 217 static int nopnp; 218 #endif 219 220 static int el3_common_init(struct net_device *dev); 221 static void el3_common_remove(struct net_device *dev); 222 static ushort id_read_eeprom(int index); 223 static ushort read_eeprom(int ioaddr, int index); 224 static int el3_open(struct net_device *dev); 225 static netdev_tx_t el3_start_xmit(struct sk_buff *skb, struct net_device *dev); 226 static irqreturn_t el3_interrupt(int irq, void *dev_id); 227 static void update_stats(struct net_device *dev); 228 static struct net_device_stats *el3_get_stats(struct net_device *dev); 229 static int el3_rx(struct net_device *dev); 230 static int el3_close(struct net_device *dev); 231 static void set_multicast_list(struct net_device *dev); 232 static void el3_tx_timeout(struct net_device *dev, unsigned int txqueue); 233 static void el3_down(struct net_device *dev); 234 static void el3_up(struct net_device *dev); 235 static const struct ethtool_ops ethtool_ops; 236 #ifdef CONFIG_PM 237 static int el3_suspend(struct device *, pm_message_t); 238 static int el3_resume(struct device *); 239 #else 240 #define el3_suspend NULL 241 #define el3_resume NULL 242 #endif 243 244 /* Generic device remove for all device types. */ 245 static int el3_device_remove(struct device *device); 246 #ifdef CONFIG_NET_POLL_CONTROLLER 247 static void el3_poll_controller(struct net_device *dev); 248 #endif 249 250 /* Return 0 on success, 1 on error, 2 when found already detected PnP card. */ 251 static int el3_isa_id_sequence(__be16 *phys_addr) 252 { 253 short lrs_state = 0xff; 254 int i; 255 256 /* ISA boards are detected by sending the ID sequence to the 257 * ID_PORT. We find cards past the first by setting the 'current_tag' 258 * on cards as they are found. Cards with their tag set will not 259 * respond to subsequent ID sequences. 260 */ 261 outb(0x00, id_port); 262 outb(0x00, id_port); 263 for (i = 0; i < 255; i++) { 264 outb(lrs_state, id_port); 265 lrs_state <<= 1; 266 lrs_state = lrs_state & 0x100 ? lrs_state ^ 0xcf : lrs_state; 267 } 268 /* For the first probe, clear all board's tag registers. */ 269 if (current_tag == 0) 270 outb(0xd0, id_port); 271 else /* Otherwise kill off already-found boards. */ 272 outb(0xd8, id_port); 273 if (id_read_eeprom(7) != 0x6d50) 274 return 1; 275 /* Read in EEPROM data, which does contention-select. 276 * Only the lowest address board will stay "on-line". 277 * 3Com got the byte order backwards. 278 */ 279 for (i = 0; i < 3; i++) 280 phys_addr[i] = htons(id_read_eeprom(i)); 281 #ifdef CONFIG_PNP 282 if (!nopnp) { 283 /* The ISA PnP 3c509 cards respond to the ID sequence too. 284 * This check is needed in order not to register them twice. 285 */ 286 for (i = 0; i < el3_cards; i++) { 287 struct el3_private *lp = netdev_priv(el3_devs[i]); 288 289 if (lp->type == EL3_PNP && 290 ether_addr_equal((u8 *)phys_addr, 291 el3_devs[i]->dev_addr)) { 292 if (el3_debug > 3) 293 pr_debug("3c509 with address %02x %02x %02x %02x %02x %02x was found by ISAPnP\n", 294 phys_addr[0] & 0xff, 295 phys_addr[0] >> 8, 296 phys_addr[1] & 0xff, 297 phys_addr[1] >> 8, 298 phys_addr[2] & 0xff, 299 phys_addr[2] >> 8); 300 /* Set the adaptor tag so that the next card 301 * can be found. 302 */ 303 outb(0xd0 + ++current_tag, id_port); 304 return 2; 305 } 306 } 307 } 308 #endif /* CONFIG_PNP */ 309 return 0; 310 } 311 312 static void el3_dev_fill(struct net_device *dev, __be16 *phys_addr, int ioaddr, 313 int irq, int if_port, enum el3_cardtype type) 314 { 315 struct el3_private *lp = netdev_priv(dev); 316 317 eth_hw_addr_set(dev, (u8 *)phys_addr); 318 dev->base_addr = ioaddr; 319 dev->irq = irq; 320 dev->if_port = if_port; 321 lp->type = type; 322 } 323 324 static int el3_isa_match(struct device *pdev, unsigned int ndev) 325 { 326 int ioaddr, isa_irq, if_port, err; 327 struct net_device *dev; 328 unsigned int iobase; 329 __be16 phys_addr[3]; 330 331 while ((err = el3_isa_id_sequence(phys_addr)) == 2) 332 ; /* Skip to next card when PnP card found */ 333 if (err == 1) 334 return 0; 335 336 iobase = id_read_eeprom(8); 337 if_port = iobase >> 14; 338 ioaddr = 0x200 + ((iobase & 0x1f) << 4); 339 if (irq[el3_cards] > 1 && irq[el3_cards] < 16) 340 isa_irq = irq[el3_cards]; 341 else 342 isa_irq = id_read_eeprom(9) >> 12; 343 344 dev = alloc_etherdev(sizeof(struct el3_private)); 345 if (!dev) 346 return -ENOMEM; 347 348 SET_NETDEV_DEV(dev, pdev); 349 350 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-isa")) { 351 free_netdev(dev); 352 return 0; 353 } 354 355 /* Set the adaptor tag so that the next card can be found. */ 356 outb(0xd0 + ++current_tag, id_port); 357 358 /* Activate the adaptor at the EEPROM location. */ 359 outb((ioaddr >> 4) | 0xe0, id_port); 360 361 EL3WINDOW(0); 362 if (inw(ioaddr) != 0x6d50) { 363 free_netdev(dev); 364 return 0; 365 } 366 367 /* Free the interrupt so that some other card can use it. */ 368 outw(0x0f00, ioaddr + WN0_IRQ); 369 370 el3_dev_fill(dev, phys_addr, ioaddr, isa_irq, if_port, EL3_ISA); 371 dev_set_drvdata(pdev, dev); 372 if (el3_common_init(dev)) { 373 free_netdev(dev); 374 return 0; 375 } 376 377 el3_devs[el3_cards++] = dev; 378 return 1; 379 } 380 381 static void el3_isa_remove(struct device *pdev, unsigned int ndev) 382 { 383 el3_device_remove(pdev); 384 dev_set_drvdata(pdev, NULL); 385 } 386 387 #ifdef CONFIG_PM 388 static int el3_isa_suspend(struct device *dev, unsigned int n, 389 pm_message_t state) 390 { 391 current_tag = 0; 392 return el3_suspend(dev, state); 393 } 394 395 static int el3_isa_resume(struct device *dev, unsigned int n) 396 { 397 struct net_device *ndev = dev_get_drvdata(dev); 398 int ioaddr = ndev->base_addr, err; 399 __be16 phys_addr[3]; 400 401 while ((err = el3_isa_id_sequence(phys_addr)) == 2) 402 ; /* Skip to next card when PnP card found */ 403 if (err == 1) 404 return 0; 405 /* Set the adaptor tag so that the next card can be found. */ 406 outb(0xd0 + ++current_tag, id_port); 407 /* Enable the card */ 408 outb((ioaddr >> 4) | 0xe0, id_port); 409 EL3WINDOW(0); 410 if (inw(ioaddr) != 0x6d50) 411 return 1; 412 /* Free the interrupt so that some other card can use it. */ 413 outw(0x0f00, ioaddr + WN0_IRQ); 414 return el3_resume(dev); 415 } 416 #endif 417 418 static struct isa_driver el3_isa_driver = { 419 .match = el3_isa_match, 420 .remove = el3_isa_remove, 421 #ifdef CONFIG_PM 422 .suspend = el3_isa_suspend, 423 .resume = el3_isa_resume, 424 #endif 425 .driver = { 426 .name = "3c509" 427 }, 428 }; 429 430 static int isa_registered; 431 432 #ifdef CONFIG_PNP 433 static const struct pnp_device_id el3_pnp_ids[] = { 434 { .id = "TCM5090" }, /* 3Com Etherlink III (TP) */ 435 { .id = "TCM5091" }, /* 3Com Etherlink III */ 436 { .id = "TCM5094" }, /* 3Com Etherlink III (combo) */ 437 { .id = "TCM5095" }, /* 3Com Etherlink III (TPO) */ 438 { .id = "TCM5098" }, /* 3Com Etherlink III (TPC) */ 439 { .id = "PNP80f7" }, /* 3Com Etherlink III compatible */ 440 { .id = "PNP80f8" }, /* 3Com Etherlink III compatible */ 441 { .id = "" } 442 }; 443 MODULE_DEVICE_TABLE(pnp, el3_pnp_ids); 444 445 static int el3_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) 446 { 447 struct net_device *dev = NULL; 448 int ioaddr, irq, if_port; 449 __be16 phys_addr[3]; 450 short i; 451 int err; 452 453 ioaddr = pnp_port_start(pdev, 0); 454 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-pnp")) 455 return -EBUSY; 456 irq = pnp_irq(pdev, 0); 457 EL3WINDOW(0); 458 for (i = 0; i < 3; i++) 459 phys_addr[i] = htons(read_eeprom(ioaddr, i)); 460 if_port = read_eeprom(ioaddr, 8) >> 14; 461 dev = alloc_etherdev(sizeof(struct el3_private)); 462 if (!dev) { 463 release_region(ioaddr, EL3_IO_EXTENT); 464 return -ENOMEM; 465 } 466 SET_NETDEV_DEV(dev, &pdev->dev); 467 468 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_PNP); 469 pnp_set_drvdata(pdev, dev); 470 err = el3_common_init(dev); 471 472 if (err) { 473 pnp_set_drvdata(pdev, NULL); 474 free_netdev(dev); 475 return err; 476 } 477 478 el3_devs[el3_cards++] = dev; 479 return 0; 480 } 481 482 static void el3_pnp_remove(struct pnp_dev *pdev) 483 { 484 el3_common_remove(pnp_get_drvdata(pdev)); 485 pnp_set_drvdata(pdev, NULL); 486 } 487 488 #ifdef CONFIG_PM 489 static int el3_pnp_suspend(struct pnp_dev *pdev, pm_message_t state) 490 { 491 return el3_suspend(&pdev->dev, state); 492 } 493 494 static int el3_pnp_resume(struct pnp_dev *pdev) 495 { 496 return el3_resume(&pdev->dev); 497 } 498 #endif 499 500 static struct pnp_driver el3_pnp_driver = { 501 .name = "3c509", 502 .id_table = el3_pnp_ids, 503 .probe = el3_pnp_probe, 504 .remove = el3_pnp_remove, 505 #ifdef CONFIG_PM 506 .suspend = el3_pnp_suspend, 507 .resume = el3_pnp_resume, 508 #endif 509 }; 510 511 static int pnp_registered; 512 #endif /* CONFIG_PNP */ 513 514 #ifdef CONFIG_EISA 515 static const struct eisa_device_id el3_eisa_ids[] = { 516 { "TCM5090" }, 517 { "TCM5091" }, 518 { "TCM5092" }, 519 { "TCM5093" }, 520 { "TCM5094" }, 521 { "TCM5095" }, 522 { "TCM5098" }, 523 { "" } 524 }; 525 MODULE_DEVICE_TABLE(eisa, el3_eisa_ids); 526 527 static int el3_eisa_probe(struct device *device); 528 529 static struct eisa_driver el3_eisa_driver = { 530 .id_table = el3_eisa_ids, 531 .driver = { 532 .name = "3c579", 533 .probe = el3_eisa_probe, 534 .remove = el3_device_remove, 535 .suspend = el3_suspend, 536 .resume = el3_resume, 537 } 538 }; 539 540 static int eisa_registered; 541 #endif 542 543 static const struct net_device_ops netdev_ops = { 544 .ndo_open = el3_open, 545 .ndo_stop = el3_close, 546 .ndo_start_xmit = el3_start_xmit, 547 .ndo_get_stats = el3_get_stats, 548 .ndo_set_rx_mode = set_multicast_list, 549 .ndo_tx_timeout = el3_tx_timeout, 550 .ndo_set_mac_address = eth_mac_addr, 551 .ndo_validate_addr = eth_validate_addr, 552 #ifdef CONFIG_NET_POLL_CONTROLLER 553 .ndo_poll_controller = el3_poll_controller, 554 #endif 555 }; 556 557 static int el3_common_init(struct net_device *dev) 558 { 559 static const char *const if_names[] = { 560 "10baseT", "AUI", "undefined", "BNC" 561 }; 562 struct el3_private *lp = netdev_priv(dev); 563 int err; 564 565 spin_lock_init(&lp->lock); 566 567 if (dev->mem_start & 0x05) { /* xcvr codes 1/3/4/12 */ 568 dev->if_port = (dev->mem_start & 0x0f); 569 } else { /* xcvr codes 0/8 */ 570 /* use eeprom value, but save user's full-duplex selection */ 571 dev->if_port |= (dev->mem_start & 0x08); 572 } 573 574 /* The EL3-specific entries in the device structure. */ 575 dev->netdev_ops = &netdev_ops; 576 dev->watchdog_timeo = TX_TIMEOUT; 577 dev->ethtool_ops = ðtool_ops; 578 579 err = register_netdev(dev); 580 if (err) { 581 pr_err("Failed to register 3c5x9 at %#3.3lx, IRQ %d.\n", 582 dev->base_addr, dev->irq); 583 release_region(dev->base_addr, EL3_IO_EXTENT); 584 return err; 585 } 586 587 pr_info("%s: 3c5x9 found at %#3.3lx, %s port, address %pM, IRQ %d.\n", 588 dev->name, dev->base_addr, if_names[(dev->if_port & 0x03)], 589 dev->dev_addr, dev->irq); 590 591 return 0; 592 } 593 594 static void el3_common_remove(struct net_device *dev) 595 { 596 unregister_netdev(dev); 597 release_region(dev->base_addr, EL3_IO_EXTENT); 598 free_netdev(dev); 599 } 600 601 #ifdef CONFIG_EISA 602 static int el3_eisa_probe(struct device *device) 603 { 604 struct net_device *dev = NULL; 605 struct eisa_device *edev; 606 int ioaddr, irq, if_port; 607 __be16 phys_addr[3]; 608 short i; 609 int err; 610 611 /* Yeepee, The driver framework is calling us ! */ 612 edev = to_eisa_device(device); 613 ioaddr = edev->base_addr; 614 615 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c579-eisa")) 616 return -EBUSY; 617 618 /* Change the register set to the configuration window 0. */ 619 outw(SELECT_WINDOW | 0, ioaddr + 0xC80 + EL3_CMD); 620 621 irq = inw(ioaddr + WN0_IRQ) >> 12; 622 if_port = inw(ioaddr + 6) >> 14; 623 for (i = 0; i < 3; i++) 624 phys_addr[i] = htons(read_eeprom(ioaddr, i)); 625 626 /* Restore the "Product ID" to the EEPROM read register. */ 627 read_eeprom(ioaddr, 3); 628 629 dev = alloc_etherdev(sizeof(struct el3_private)); 630 if (!dev) { 631 release_region(ioaddr, EL3_IO_EXTENT); 632 return -ENOMEM; 633 } 634 635 SET_NETDEV_DEV(dev, device); 636 637 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_EISA); 638 eisa_set_drvdata(edev, dev); 639 err = el3_common_init(dev); 640 641 if (err) { 642 eisa_set_drvdata(edev, NULL); 643 free_netdev(dev); 644 return err; 645 } 646 647 el3_devs[el3_cards++] = dev; 648 return 0; 649 } 650 #endif 651 652 /* This remove works for all device types. 653 * 654 * The net dev must be stored in the driver data field. 655 */ 656 static int el3_device_remove(struct device *device) 657 { 658 struct net_device *dev; 659 660 dev = dev_get_drvdata(device); 661 662 el3_common_remove(dev); 663 return 0; 664 } 665 666 /* Read a word from the EEPROM using the regular EEPROM access register. 667 * Assume that we are in register window zero. 668 */ 669 static ushort read_eeprom(int ioaddr, int index) 670 { 671 outw(EEPROM_READ + index, ioaddr + 10); 672 /* Pause for at least 162 us for the read to take place. 673 * Some chips seem to require much longer. 674 */ 675 mdelay(2); 676 return inw(ioaddr + 12); 677 } 678 679 /* Read a word from the EEPROM when in the ISA ID probe state. */ 680 static ushort id_read_eeprom(int index) 681 { 682 int bit, word = 0; 683 684 /* Issue read command, and pause for at least 162 us for it to 685 * complete. Assume extra-fast 16MHz bus. 686 */ 687 outb(EEPROM_READ + index, id_port); 688 689 /* Pause for at least 162 us for the read to take place. 690 * Some chips seem to require much longer. 691 */ 692 mdelay(4); 693 694 for (bit = 15; bit >= 0; bit--) 695 word = (word << 1) + (inb(id_port) & 0x01); 696 697 if (el3_debug > 3) 698 pr_debug(" 3c509 EEPROM word %d %#4.4x.\n", index, word); 699 700 return word; 701 } 702 703 static int el3_open(struct net_device *dev) 704 { 705 int ioaddr = dev->base_addr; 706 int i; 707 708 outw(TX_RESET, ioaddr + EL3_CMD); 709 outw(RX_RESET, ioaddr + EL3_CMD); 710 outw(SET_STATUS_ENB | 0x00, ioaddr + EL3_CMD); 711 712 i = request_irq(dev->irq, el3_interrupt, 0, dev->name, dev); 713 if (i) 714 return i; 715 716 EL3WINDOW(0); 717 if (el3_debug > 3) 718 pr_debug("%s: Opening, IRQ %d status@%x %4.4x.\n", 719 dev->name, dev->irq, 720 ioaddr + EL3_STATUS, inw(ioaddr + EL3_STATUS)); 721 722 el3_up(dev); 723 724 if (el3_debug > 3) 725 pr_debug("%s: Opened 3c509 IRQ %d status %4.4x.\n", 726 dev->name, dev->irq, inw(ioaddr + EL3_STATUS)); 727 728 return 0; 729 } 730 731 static void el3_tx_timeout(struct net_device *dev, unsigned int txqueue) 732 { 733 int ioaddr = dev->base_addr; 734 735 /* Transmitter timeout, serious problems. */ 736 pr_warn("%s: transmit timed out, Tx_status %2.2x status %4.4x Tx FIFO room %d\n", 737 dev->name, inb(ioaddr + TX_STATUS), inw(ioaddr + EL3_STATUS), 738 inw(ioaddr + TX_FREE)); 739 dev->stats.tx_errors++; 740 netif_trans_update(dev); /* prevent tx timeout */ 741 /* Issue TX_RESET and TX_START commands. */ 742 outw(TX_RESET, ioaddr + EL3_CMD); 743 outw(TX_ENABLE, ioaddr + EL3_CMD); 744 netif_wake_queue(dev); 745 } 746 747 static netdev_tx_t el3_start_xmit(struct sk_buff *skb, struct net_device *dev) 748 { 749 struct el3_private *lp = netdev_priv(dev); 750 int ioaddr = dev->base_addr; 751 unsigned long flags; 752 753 netif_stop_queue(dev); 754 755 dev->stats.tx_bytes += skb->len; 756 757 if (el3_debug > 4) { 758 pr_debug("%s: el3_start_xmit(length = %u) called, status %4.4x.\n", 759 dev->name, skb->len, inw(ioaddr + EL3_STATUS)); 760 } 761 /* 762 * We lock the driver against other processors. Note 763 * we don't need to lock versus the IRQ as we suspended 764 * that. This means that we lose the ability to take 765 * an RX during a TX upload. That sucks a bit with SMP 766 * on an original 3c509 (2K buffer). 767 * 768 * Using disable_irq stops us crapping on other 769 * time sensitive devices. 770 */ 771 772 spin_lock_irqsave(&lp->lock, flags); 773 774 /* Put out the doubleword header... */ 775 outw(skb->len, ioaddr + TX_FIFO); 776 outw(0x00, ioaddr + TX_FIFO); 777 /* ... and the packet rounded to a doubleword. */ 778 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2); 779 780 if (inw(ioaddr + TX_FREE) > 1536) { 781 netif_start_queue(dev); 782 } else { 783 /* Interrupt us when the FIFO has room for max-sized packet. */ 784 outw(SET_TX_THRESHOLD + 1536, ioaddr + EL3_CMD); 785 } 786 787 spin_unlock_irqrestore(&lp->lock, flags); 788 789 dev_consume_skb_any(skb); 790 791 /* Clear the Tx status stack. */ 792 { 793 short tx_status; 794 int i = 4; 795 796 while (--i > 0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) { 797 if (tx_status & 0x38) 798 dev->stats.tx_aborted_errors++; 799 if (tx_status & 0x30) 800 outw(TX_RESET, ioaddr + EL3_CMD); 801 if (tx_status & 0x3C) 802 outw(TX_ENABLE, ioaddr + EL3_CMD); 803 /* Pop the status stack. */ 804 outb(0x00, ioaddr + TX_STATUS); 805 } 806 } 807 return NETDEV_TX_OK; 808 } 809 810 /* The EL3 interrupt handler. */ 811 static irqreturn_t el3_interrupt(int irq, void *dev_id) 812 { 813 struct net_device *dev = dev_id; 814 int i = max_interrupt_work; 815 struct el3_private *lp; 816 int ioaddr, status; 817 818 lp = netdev_priv(dev); 819 spin_lock(&lp->lock); 820 821 ioaddr = dev->base_addr; 822 823 if (el3_debug > 4) { 824 status = inw(ioaddr + EL3_STATUS); 825 pr_debug("%s: interrupt, status %4.4x.\n", dev->name, status); 826 } 827 828 while ((status = inw(ioaddr + EL3_STATUS)) & 829 (INT_LATCH | RX_COMPLETE | STATS_FULL)) { 830 831 if (status & RX_COMPLETE) 832 el3_rx(dev); 833 834 if (status & TX_AVAILABLE) { 835 if (el3_debug > 5) 836 pr_debug(" TX room bit was handled.\n"); 837 /* There's room in the FIFO for a full-sized packet. */ 838 outw(ACK_INTR | TX_AVAILABLE, ioaddr + EL3_CMD); 839 netif_wake_queue(dev); 840 } 841 if (status & 842 (ADAPTER_FAILURE | RX_EARLY | STATS_FULL | TX_COMPLETE)) { 843 /* Handle all uncommon interrupts. */ 844 if (status & STATS_FULL) { 845 /* Empty statistics. */ 846 update_stats(dev); 847 } 848 if (status & RX_EARLY) { 849 /* Rx early is unused. */ 850 el3_rx(dev); 851 outw(ACK_INTR | RX_EARLY, ioaddr + EL3_CMD); 852 } 853 if (status & TX_COMPLETE) { 854 /* Really Tx error. */ 855 short tx_status; 856 int i = 4; 857 858 while (--i > 0 && 859 ((tx_status = inb(ioaddr + TX_STATUS)) 860 > 0)) { 861 if (tx_status & 0x38) 862 dev->stats.tx_aborted_errors++; 863 if (tx_status & 0x30) 864 outw(TX_RESET, 865 ioaddr + EL3_CMD); 866 if (tx_status & 0x3C) 867 outw(TX_ENABLE, 868 ioaddr + EL3_CMD); 869 /* Pop the status stack. */ 870 outb(0x00, ioaddr + TX_STATUS); 871 } 872 } 873 if (status & ADAPTER_FAILURE) { 874 /* Adapter failure requires Rx reset 875 * and reinit. 876 */ 877 outw(RX_RESET, ioaddr + EL3_CMD); 878 /* Set the Rx filter to the current state. */ 879 outw((SET_RX_FILTER | RX_STATION | 880 RX_BROADCAST | 881 (dev->flags & IFF_ALLMULTI ? 882 RX_MULTICAST : 0) | 883 (dev->flags & IFF_PROMISC ? 884 RX_PROM : 0)), 885 ioaddr + EL3_CMD); 886 /* Re-enable the receiver. */ 887 outw(RX_ENABLE, ioaddr + EL3_CMD); 888 outw(ACK_INTR | ADAPTER_FAILURE, 889 ioaddr + EL3_CMD); 890 } 891 } 892 893 if (--i < 0) { 894 pr_err("%s: Infinite loop in interrupt, status %4.4x.\n", 895 dev->name, status); 896 /* Clear all interrupts. */ 897 outw(ACK_INTR | 0xFF, ioaddr + EL3_CMD); 898 break; 899 } 900 /* Acknowledge the IRQ. */ 901 outw(ACK_INTR | INT_REQ | INT_LATCH, ioaddr + EL3_CMD); 902 } 903 904 if (el3_debug > 4) { 905 pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name, 906 inw(ioaddr + EL3_STATUS)); 907 } 908 spin_unlock(&lp->lock); 909 return IRQ_HANDLED; 910 } 911 912 #ifdef CONFIG_NET_POLL_CONTROLLER 913 /* 914 * Polling receive - used by netconsole and other diagnostic tools 915 * to allow network i/o with interrupts disabled. 916 */ 917 static void el3_poll_controller(struct net_device *dev) 918 { 919 disable_irq(dev->irq); 920 el3_interrupt(dev->irq, dev); 921 enable_irq(dev->irq); 922 } 923 #endif 924 925 static struct net_device_stats *el3_get_stats(struct net_device *dev) 926 { 927 struct el3_private *lp = netdev_priv(dev); 928 unsigned long flags; 929 930 /* This is fast enough not to bother with disable IRQ stuff. */ 931 spin_lock_irqsave(&lp->lock, flags); 932 update_stats(dev); 933 spin_unlock_irqrestore(&lp->lock, flags); 934 return &dev->stats; 935 } 936 937 /* Update statistics. We change to register window 6, so this should be run 938 * single-threaded if the device is active. This is expected to be a rare 939 * operation, and it's simpler for the rest of the driver to assume that 940 * window 1 is always valid rather than use a special window-state variable. 941 */ 942 static void update_stats(struct net_device *dev) 943 { 944 int ioaddr = dev->base_addr; 945 946 if (el3_debug > 5) 947 pr_debug(" Updating the statistics.\n"); 948 /* Turn off statistics updates while reading. */ 949 outw(STATS_DISABLE, ioaddr + EL3_CMD); 950 /* Switch to the stats window, and read everything. */ 951 EL3WINDOW(6); 952 dev->stats.tx_carrier_errors += inb(ioaddr + 0); 953 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1); 954 /* Multiple collisions. */ inb(ioaddr + 2); 955 dev->stats.collisions += inb(ioaddr + 3); 956 dev->stats.tx_window_errors += inb(ioaddr + 4); 957 dev->stats.rx_fifo_errors += inb(ioaddr + 5); 958 dev->stats.tx_packets += inb(ioaddr + 6); 959 /* Rx packets */ inb(ioaddr + 7); 960 /* Tx deferrals */ inb(ioaddr + 8); 961 inw(ioaddr + 10); /* Total Rx and Tx octets. */ 962 inw(ioaddr + 12); 963 964 /* Back to window 1, and turn statistics back on. */ 965 EL3WINDOW(1); 966 outw(STATS_ENABLE, ioaddr + EL3_CMD); 967 } 968 969 static int el3_rx(struct net_device *dev) 970 { 971 int ioaddr = dev->base_addr; 972 short rx_status; 973 974 if (el3_debug > 5) 975 pr_debug(" In rx_packet(), status %4.4x, rx_status %4.4x.\n", 976 inw(ioaddr + EL3_STATUS), inw(ioaddr + RX_STATUS)); 977 while ((rx_status = inw(ioaddr + RX_STATUS)) > 0) { 978 if (rx_status & 0x4000) { 979 /* Error, update stats. */ 980 short error = rx_status & 0x3800; 981 982 outw(RX_DISCARD, ioaddr + EL3_CMD); 983 dev->stats.rx_errors++; 984 switch (error) { 985 case 0x0000: 986 dev->stats.rx_over_errors++; 987 break; 988 case 0x0800: 989 dev->stats.rx_length_errors++; 990 break; 991 case 0x1000: 992 dev->stats.rx_frame_errors++; 993 break; 994 case 0x1800: 995 dev->stats.rx_length_errors++; 996 break; 997 case 0x2000: 998 dev->stats.rx_frame_errors++; 999 break; 1000 case 0x2800: 1001 dev->stats.rx_crc_errors++; break; 1002 } 1003 } else { 1004 short pkt_len = rx_status & 0x7ff; 1005 struct sk_buff *skb; 1006 1007 skb = netdev_alloc_skb(dev, pkt_len + 5); 1008 if (el3_debug > 4) 1009 pr_debug("Receiving packet size %d status %4.4x.\n", 1010 pkt_len, rx_status); 1011 if (skb) { 1012 /* Align IP on 16 byte. */ 1013 skb_reserve(skb, 2); 1014 1015 /* 'skb->data' points to the start of sk_buff 1016 * data area. 1017 */ 1018 insl(ioaddr + RX_FIFO, skb_put(skb, pkt_len), 1019 (pkt_len + 3) >> 2); 1020 1021 /* Pop top Rx packet. */ 1022 outw(RX_DISCARD, ioaddr + EL3_CMD); 1023 skb->protocol = eth_type_trans(skb, dev); 1024 netif_rx(skb); 1025 dev->stats.rx_bytes += pkt_len; 1026 dev->stats.rx_packets++; 1027 continue; 1028 } 1029 outw(RX_DISCARD, ioaddr + EL3_CMD); 1030 dev->stats.rx_dropped++; 1031 if (el3_debug) 1032 pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n", 1033 dev->name, pkt_len); 1034 } 1035 inw(ioaddr + EL3_STATUS); /* Delay. */ 1036 while (inw(ioaddr + EL3_STATUS) & 0x1000) 1037 pr_debug(" Waiting for 3c509 to discard packet, status %x.\n", 1038 inw(ioaddr + EL3_STATUS)); 1039 } 1040 1041 return 0; 1042 } 1043 1044 /* Set or clear the multicast filter for this adaptor. */ 1045 static void set_multicast_list(struct net_device *dev) 1046 { 1047 struct el3_private *lp = netdev_priv(dev); 1048 int ioaddr = dev->base_addr; 1049 int mc_count = netdev_mc_count(dev); 1050 unsigned long flags; 1051 1052 if (el3_debug > 1) { 1053 static int old; 1054 1055 if (old != mc_count) { 1056 old = mc_count; 1057 pr_debug("%s: Setting Rx mode to %d addresses.\n", 1058 dev->name, mc_count); 1059 } 1060 } 1061 spin_lock_irqsave(&lp->lock, flags); 1062 if (dev->flags & IFF_PROMISC) { 1063 outw((SET_RX_FILTER | RX_STATION | RX_MULTICAST | 1064 RX_BROADCAST | RX_PROM), 1065 ioaddr + EL3_CMD); 1066 } else if (mc_count || (dev->flags & IFF_ALLMULTI)) { 1067 outw(SET_RX_FILTER | RX_STATION | RX_MULTICAST | RX_BROADCAST, 1068 ioaddr + EL3_CMD); 1069 } else { 1070 outw(SET_RX_FILTER | RX_STATION | RX_BROADCAST, 1071 ioaddr + EL3_CMD); 1072 } 1073 spin_unlock_irqrestore(&lp->lock, flags); 1074 } 1075 1076 static int el3_close(struct net_device *dev) 1077 { 1078 struct el3_private *lp = netdev_priv(dev); 1079 int ioaddr = dev->base_addr; 1080 1081 if (el3_debug > 2) 1082 pr_debug("%s: Shutting down ethercard.\n", dev->name); 1083 1084 el3_down(dev); 1085 1086 free_irq(dev->irq, dev); 1087 /* Switching back to window 0 disables the IRQ. */ 1088 EL3WINDOW(0); 1089 if (lp->type != EL3_EISA) { 1090 /* But we explicitly zero the IRQ line select anyway. Don't do 1091 * it on EISA cards, it prevents the module from getting an 1092 * IRQ after unload+reload... 1093 */ 1094 outw(0x0f00, ioaddr + WN0_IRQ); 1095 } 1096 1097 return 0; 1098 } 1099 1100 static int el3_link_ok(struct net_device *dev) 1101 { 1102 int ioaddr = dev->base_addr; 1103 u16 tmp; 1104 1105 EL3WINDOW(4); 1106 tmp = inw(ioaddr + WN4_MEDIA); 1107 EL3WINDOW(1); 1108 return tmp & (1 << 11); 1109 } 1110 1111 static void el3_netdev_get_ecmd(struct net_device *dev, 1112 struct ethtool_link_ksettings *cmd) 1113 { 1114 int ioaddr = dev->base_addr; 1115 u32 supported; 1116 u16 tmp; 1117 1118 EL3WINDOW(0); 1119 /* Obtain current transceiver via WN4_MEDIA? */ 1120 tmp = inw(ioaddr + WN0_ADDR_CONF); 1121 switch (tmp >> 14) { 1122 case 0: 1123 cmd->base.port = PORT_TP; 1124 break; 1125 case 1: 1126 cmd->base.port = PORT_AUI; 1127 break; 1128 case 3: 1129 cmd->base.port = PORT_BNC; 1130 break; 1131 default: 1132 break; 1133 } 1134 1135 cmd->base.duplex = DUPLEX_HALF; 1136 supported = 0; 1137 tmp = inw(ioaddr + WN0_CONF_CTRL); 1138 if (tmp & (1 << 13)) 1139 supported |= SUPPORTED_AUI; 1140 if (tmp & (1 << 12)) 1141 supported |= SUPPORTED_BNC; 1142 if (tmp & (1 << 9)) { 1143 supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half | 1144 SUPPORTED_10baseT_Full; /* hmm... */ 1145 EL3WINDOW(4); 1146 tmp = inw(ioaddr + WN4_NETDIAG); 1147 if (tmp & FD_ENABLE) 1148 cmd->base.duplex = DUPLEX_FULL; 1149 } 1150 1151 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, 1152 supported); 1153 cmd->base.speed = SPEED_10; 1154 EL3WINDOW(1); 1155 } 1156 1157 static int el3_netdev_set_ecmd(struct net_device *dev, 1158 const struct ethtool_link_ksettings *cmd) 1159 { 1160 int ioaddr = dev->base_addr; 1161 u16 tmp; 1162 1163 if (cmd->base.speed != SPEED_10) 1164 return -EINVAL; 1165 if (cmd->base.duplex != DUPLEX_HALF && cmd->base.duplex != DUPLEX_FULL) 1166 return -EINVAL; 1167 1168 /* change XCVR type */ 1169 EL3WINDOW(0); 1170 tmp = inw(ioaddr + WN0_ADDR_CONF); 1171 switch (cmd->base.port) { 1172 case PORT_TP: 1173 tmp &= ~(3 << 14); 1174 dev->if_port = 0; 1175 break; 1176 case PORT_AUI: 1177 tmp &= ~(3 << 14); 1178 tmp |= 1 << 14; 1179 dev->if_port = 1; 1180 break; 1181 case PORT_BNC: 1182 tmp |= 3 << 14; 1183 dev->if_port = 3; 1184 break; 1185 default: 1186 return -EINVAL; 1187 } 1188 1189 outw(tmp, ioaddr + WN0_ADDR_CONF); 1190 if (dev->if_port == 3) { 1191 /* Fire up the DC-DC converter if BNC gets enabled. */ 1192 tmp = inw(ioaddr + WN0_ADDR_CONF); 1193 if (tmp & (3 << 14)) { 1194 outw(START_COAX, ioaddr + EL3_CMD); 1195 udelay(800); 1196 } else { 1197 return -EIO; 1198 } 1199 } 1200 1201 EL3WINDOW(4); 1202 tmp = inw(ioaddr + WN4_NETDIAG); 1203 if (cmd->base.duplex == DUPLEX_FULL) 1204 tmp |= FD_ENABLE; 1205 else 1206 tmp &= ~FD_ENABLE; 1207 outw(tmp, ioaddr + WN4_NETDIAG); 1208 EL3WINDOW(1); 1209 1210 return 0; 1211 } 1212 1213 static void el3_get_drvinfo(struct net_device *dev, 1214 struct ethtool_drvinfo *info) 1215 { 1216 strscpy(info->driver, DRV_NAME, sizeof(info->driver)); 1217 } 1218 1219 static int el3_get_link_ksettings(struct net_device *dev, 1220 struct ethtool_link_ksettings *cmd) 1221 { 1222 struct el3_private *lp = netdev_priv(dev); 1223 1224 spin_lock_irq(&lp->lock); 1225 el3_netdev_get_ecmd(dev, cmd); 1226 spin_unlock_irq(&lp->lock); 1227 return 0; 1228 } 1229 1230 static int el3_set_link_ksettings(struct net_device *dev, 1231 const struct ethtool_link_ksettings *cmd) 1232 { 1233 struct el3_private *lp = netdev_priv(dev); 1234 int ret; 1235 1236 spin_lock_irq(&lp->lock); 1237 ret = el3_netdev_set_ecmd(dev, cmd); 1238 spin_unlock_irq(&lp->lock); 1239 return ret; 1240 } 1241 1242 static u32 el3_get_link(struct net_device *dev) 1243 { 1244 struct el3_private *lp = netdev_priv(dev); 1245 u32 ret; 1246 1247 spin_lock_irq(&lp->lock); 1248 ret = el3_link_ok(dev); 1249 spin_unlock_irq(&lp->lock); 1250 return ret; 1251 } 1252 1253 static u32 el3_get_msglevel(struct net_device *dev) 1254 { 1255 return el3_debug; 1256 } 1257 1258 static void el3_set_msglevel(struct net_device *dev, u32 v) 1259 { 1260 el3_debug = v; 1261 } 1262 1263 static const struct ethtool_ops ethtool_ops = { 1264 .get_drvinfo = el3_get_drvinfo, 1265 .get_link = el3_get_link, 1266 .get_msglevel = el3_get_msglevel, 1267 .set_msglevel = el3_set_msglevel, 1268 .get_link_ksettings = el3_get_link_ksettings, 1269 .set_link_ksettings = el3_set_link_ksettings, 1270 }; 1271 1272 static void el3_down(struct net_device *dev) 1273 { 1274 int ioaddr = dev->base_addr; 1275 1276 netif_stop_queue(dev); 1277 1278 /* Turn off statistics ASAP. We update lp->stats below. */ 1279 outw(STATS_DISABLE, ioaddr + EL3_CMD); 1280 1281 /* Disable the receiver and transmitter. */ 1282 outw(RX_DISABLE, ioaddr + EL3_CMD); 1283 outw(TX_DISABLE, ioaddr + EL3_CMD); 1284 1285 if (dev->if_port == 3) { 1286 /* Turn off thinnet power. Green! */ 1287 outw(STOP_COAX, ioaddr + EL3_CMD); 1288 } else if (dev->if_port == 0) { 1289 /* Disable link beat and jabber, if_port may change here next 1290 * open(). 1291 */ 1292 EL3WINDOW(4); 1293 outw(inw(ioaddr + WN4_MEDIA) & ~MEDIA_TP, ioaddr + WN4_MEDIA); 1294 } 1295 1296 outw(SET_INTR_ENB | 0x0000, ioaddr + EL3_CMD); 1297 1298 update_stats(dev); 1299 } 1300 1301 static void el3_up(struct net_device *dev) 1302 { 1303 int ioaddr = dev->base_addr; 1304 int i, sw_info, net_diag; 1305 1306 /* Activating the board required and does no harm otherwise. */ 1307 outw(0x0001, ioaddr + 4); 1308 1309 /* Set the IRQ line. */ 1310 outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ); 1311 1312 /* Set the station address in window 2 each time opened. */ 1313 EL3WINDOW(2); 1314 1315 for (i = 0; i < 6; i++) 1316 outb(dev->dev_addr[i], ioaddr + i); 1317 1318 if ((dev->if_port & 0x03) == 3) { 1319 /* BNC interface */ 1320 1321 /* Start the thinnet transceiver. We should really wait 1322 * 50ms... 1323 */ 1324 outw(START_COAX, ioaddr + EL3_CMD); 1325 } else if ((dev->if_port & 0x03) == 0) { 1326 /* 10baseT interface */ 1327 1328 /* Combine secondary sw_info word (the adapter level) and 1329 * primary sw_info word (duplex setting plus other useless 1330 * bits). 1331 */ 1332 EL3WINDOW(0); 1333 sw_info = (read_eeprom(ioaddr, 0x14) & 0x400f) | 1334 (read_eeprom(ioaddr, 0x0d) & 0xBff0); 1335 1336 EL3WINDOW(4); 1337 net_diag = inw(ioaddr + WN4_NETDIAG); 1338 /* Temporarily assume full-duplex will be set. */ 1339 net_diag = (net_diag | FD_ENABLE); 1340 pr_info("%s: ", dev->name); 1341 switch (dev->if_port & 0x0c) { 1342 case 12: 1343 /* Force full-duplex mode if 3c5x9b. */ 1344 if (sw_info & 0x000f) { 1345 pr_cont("Forcing 3c5x9b full-duplex mode"); 1346 break; 1347 } 1348 fallthrough; 1349 case 8: 1350 /* Set full-duplex mode based on eeprom config 1351 * setting. 1352 */ 1353 if ((sw_info & 0x000f) && (sw_info & 0x8000)) { 1354 pr_cont("Setting 3c5x9b full-duplex mode (from EEPROM configuration bit)"); 1355 break; 1356 } 1357 fallthrough; 1358 default: 1359 /* xcvr = (0 || 4) OR user has an old 3c5x9 non "B" 1360 * model. 1361 */ 1362 pr_cont("Setting 3c5x9/3c5x9B half-duplex mode"); 1363 /* Disable full duplex. */ 1364 net_diag = (net_diag & ~FD_ENABLE); 1365 } 1366 1367 outw(net_diag, ioaddr + WN4_NETDIAG); 1368 pr_cont(" if_port: %d, sw_info: %4.4x\n", 1369 dev->if_port, sw_info); 1370 if (el3_debug > 3) 1371 pr_debug("%s: 3c5x9 net diag word is now: %4.4x.\n", 1372 dev->name, net_diag); 1373 /* Enable link beat and jabber check. */ 1374 outw(inw(ioaddr + WN4_MEDIA) | MEDIA_TP, ioaddr + WN4_MEDIA); 1375 } 1376 1377 /* Switch to the stats window, and clear all stats by reading. */ 1378 outw(STATS_DISABLE, ioaddr + EL3_CMD); 1379 EL3WINDOW(6); 1380 for (i = 0; i < 9; i++) 1381 inb(ioaddr + i); 1382 inw(ioaddr + 10); 1383 inw(ioaddr + 12); 1384 1385 /* Switch to register set 1 for normal use. */ 1386 EL3WINDOW(1); 1387 1388 /* Accept b-case and phys addr only. */ 1389 outw(SET_RX_FILTER | RX_STATION | RX_BROADCAST, ioaddr + EL3_CMD); 1390 /* Turn on statistics. */ 1391 outw(STATS_ENABLE, ioaddr + EL3_CMD); 1392 1393 /* Enable the receiver. */ 1394 outw(RX_ENABLE, ioaddr + EL3_CMD); 1395 /* Enable transmitter. */ 1396 outw(TX_ENABLE, ioaddr + EL3_CMD); 1397 /* Allow status bits to be seen. */ 1398 outw(SET_STATUS_ENB | 0xff, ioaddr + EL3_CMD); 1399 /* Ack all pending events, and set active indicator mask. */ 1400 outw(ACK_INTR | INT_LATCH | TX_AVAILABLE | RX_EARLY | INT_REQ, 1401 ioaddr + EL3_CMD); 1402 outw((SET_INTR_ENB | INT_LATCH | TX_AVAILABLE | TX_COMPLETE | 1403 RX_COMPLETE | STATS_FULL), 1404 ioaddr + EL3_CMD); 1405 1406 netif_start_queue(dev); 1407 } 1408 1409 /* Power Management support functions */ 1410 #ifdef CONFIG_PM 1411 1412 static int el3_suspend(struct device *pdev, pm_message_t state) 1413 { 1414 struct net_device *dev; 1415 struct el3_private *lp; 1416 unsigned long flags; 1417 int ioaddr; 1418 1419 dev = dev_get_drvdata(pdev); 1420 lp = netdev_priv(dev); 1421 ioaddr = dev->base_addr; 1422 1423 spin_lock_irqsave(&lp->lock, flags); 1424 1425 if (netif_running(dev)) 1426 netif_device_detach(dev); 1427 1428 el3_down(dev); 1429 outw(POWER_DOWN, ioaddr + EL3_CMD); 1430 1431 spin_unlock_irqrestore(&lp->lock, flags); 1432 return 0; 1433 } 1434 1435 static int el3_resume(struct device *pdev) 1436 { 1437 struct net_device *dev; 1438 struct el3_private *lp; 1439 unsigned long flags; 1440 int ioaddr; 1441 1442 dev = dev_get_drvdata(pdev); 1443 lp = netdev_priv(dev); 1444 ioaddr = dev->base_addr; 1445 1446 spin_lock_irqsave(&lp->lock, flags); 1447 1448 outw(POWER_UP, ioaddr + EL3_CMD); 1449 EL3WINDOW(0); 1450 el3_up(dev); 1451 1452 if (netif_running(dev)) 1453 netif_device_attach(dev); 1454 1455 spin_unlock_irqrestore(&lp->lock, flags); 1456 return 0; 1457 } 1458 1459 #endif /* CONFIG_PM */ 1460 1461 module_param(debug, int, 0); 1462 module_param_hw_array(irq, int, irq, NULL, 0); 1463 module_param(max_interrupt_work, int, 0); 1464 MODULE_PARM_DESC(debug, "debug level (0-6)"); 1465 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)"); 1466 MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt"); 1467 #ifdef CONFIG_PNP 1468 module_param(nopnp, int, 0); 1469 MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)"); 1470 #endif /* CONFIG_PNP */ 1471 MODULE_DESCRIPTION("3Com Etherlink III (3c509, 3c509B, 3c529, 3c579) ethernet driver"); 1472 MODULE_LICENSE("GPL"); 1473 1474 static int __init el3_init_module(void) 1475 { 1476 int ret = 0; 1477 1478 if (debug >= 0) 1479 el3_debug = debug; 1480 1481 #ifdef CONFIG_PNP 1482 if (!nopnp) { 1483 ret = pnp_register_driver(&el3_pnp_driver); 1484 if (!ret) 1485 pnp_registered = 1; 1486 } 1487 #endif 1488 /* Select an open I/O location at 0x1*0 to do ISA contention select. */ 1489 /* Start with 0x110 to avoid some sound cards.*/ 1490 for (id_port = 0x110; id_port < 0x200; id_port += 0x10) { 1491 if (!request_region(id_port, 1, "3c509-control")) 1492 continue; 1493 outb(0x00, id_port); 1494 outb(0xff, id_port); 1495 if (inb(id_port) & 0x01) 1496 break; 1497 release_region(id_port, 1); 1498 } 1499 if (id_port >= 0x200) { 1500 id_port = 0; 1501 pr_err("No I/O port available for 3c509 activation.\n"); 1502 } else { 1503 ret = isa_register_driver(&el3_isa_driver, EL3_MAX_CARDS); 1504 if (!ret) 1505 isa_registered = 1; 1506 } 1507 #ifdef CONFIG_EISA 1508 ret = eisa_driver_register(&el3_eisa_driver); 1509 if (!ret) 1510 eisa_registered = 1; 1511 #endif 1512 1513 #ifdef CONFIG_PNP 1514 if (pnp_registered) 1515 ret = 0; 1516 #endif 1517 if (isa_registered) 1518 ret = 0; 1519 #ifdef CONFIG_EISA 1520 if (eisa_registered) 1521 ret = 0; 1522 #endif 1523 return ret; 1524 } 1525 1526 static void __exit el3_cleanup_module(void) 1527 { 1528 #ifdef CONFIG_PNP 1529 if (pnp_registered) 1530 pnp_unregister_driver(&el3_pnp_driver); 1531 #endif 1532 if (isa_registered) 1533 isa_unregister_driver(&el3_isa_driver); 1534 if (id_port) 1535 release_region(id_port, 1); 1536 #ifdef CONFIG_EISA 1537 if (eisa_registered) 1538 eisa_driver_unregister(&el3_eisa_driver); 1539 #endif 1540 } 1541 1542 module_init(el3_init_module); 1543 module_exit(el3_cleanup_module); 1544