if_el.c revision 1.62
1 /* $NetBSD: if_el.c,v 1.62 2000/11/15 01:02:18 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1994, Matthew E. Kimmel. Permission is hereby granted 5 * to use, copy, modify and distribute this software provided that both 6 * the copyright notice and this permission notice appear in all copies 7 * of the software, derivative works or modified versions, and any 8 * portions thereof. 9 */ 10 11 /* 12 * 3COM Etherlink 3C501 device driver 13 */ 14 15 /* 16 * Bugs/possible improvements: 17 * - Does not currently support DMA 18 * - Does not currently support multicasts 19 */ 20 21 #include "opt_inet.h" 22 #include "opt_ns.h" 23 #include "bpfilter.h" 24 #include "rnd.h" 25 26 #include <sys/param.h> 27 #include <sys/systm.h> 28 #include <sys/errno.h> 29 #include <sys/ioctl.h> 30 #include <sys/mbuf.h> 31 #include <sys/socket.h> 32 #include <sys/syslog.h> 33 #include <sys/device.h> 34 #if NRND > 0 35 #include <sys/rnd.h> 36 #endif 37 38 #include <net/if.h> 39 #include <net/if_dl.h> 40 #include <net/if_types.h> 41 42 #include <net/if_ether.h> 43 44 #ifdef INET 45 #include <netinet/in.h> 46 #include <netinet/in_systm.h> 47 #include <netinet/in_var.h> 48 #include <netinet/ip.h> 49 #include <netinet/if_inarp.h> 50 #endif 51 52 #ifdef NS 53 #include <netns/ns.h> 54 #include <netns/ns_if.h> 55 #endif 56 57 #if NBPFILTER > 0 58 #include <net/bpf.h> 59 #include <net/bpfdesc.h> 60 #endif 61 62 #include <machine/cpu.h> 63 #include <machine/intr.h> 64 #include <machine/bus.h> 65 66 #include <dev/isa/isavar.h> 67 #include <dev/isa/if_elreg.h> 68 69 /* for debugging convenience */ 70 #ifdef EL_DEBUG 71 #define DPRINTF(x) printf x 72 #else 73 #define DPRINTF(x) 74 #endif 75 76 /* 77 * per-line info and status 78 */ 79 struct el_softc { 80 struct device sc_dev; 81 void *sc_ih; 82 83 struct ethercom sc_ethercom; /* ethernet common */ 84 bus_space_tag_t sc_iot; /* bus space identifier */ 85 bus_space_handle_t sc_ioh; /* i/o handle */ 86 87 #if NRND > 0 88 rndsource_element_t rnd_source; 89 #endif 90 }; 91 92 /* 93 * prototypes 94 */ 95 int elintr __P((void *)); 96 void elinit __P((struct el_softc *)); 97 int elioctl __P((struct ifnet *, u_long, caddr_t)); 98 void elstart __P((struct ifnet *)); 99 void elwatchdog __P((struct ifnet *)); 100 void elreset __P((struct el_softc *)); 101 void elstop __P((struct el_softc *)); 102 static int el_xmit __P((struct el_softc *)); 103 void elread __P((struct el_softc *, int)); 104 struct mbuf *elget __P((struct el_softc *sc, int)); 105 static inline void el_hardreset __P((struct el_softc *)); 106 107 int elprobe __P((struct device *, struct cfdata *, void *)); 108 void elattach __P((struct device *, struct device *, void *)); 109 110 struct cfattach el_ca = { 111 sizeof(struct el_softc), elprobe, elattach 112 }; 113 114 /* 115 * Probe routine. 116 * 117 * See if the card is there and at the right place. 118 * (XXX - cgd -- needs help) 119 */ 120 int 121 elprobe(parent, match, aux) 122 struct device *parent; 123 struct cfdata *match; 124 void *aux; 125 { 126 struct isa_attach_args *ia = aux; 127 bus_space_tag_t iot = ia->ia_iot; 128 bus_space_handle_t ioh; 129 int iobase = ia->ia_iobase; 130 u_int8_t station_addr[ETHER_ADDR_LEN]; 131 u_int8_t i; 132 int rval; 133 134 rval = 0; 135 136 /* First check the base. */ 137 if (iobase < 0x200 || iobase > 0x3f0) 138 return 0; 139 140 /* Map i/o space. */ 141 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 142 return 0; 143 144 /* 145 * Now attempt to grab the station address from the PROM and see if it 146 * contains the 3com vendor code. 147 */ 148 DPRINTF(("Probing 3c501 at 0x%x...\n", iobase)); 149 150 /* Reset the board. */ 151 DPRINTF(("Resetting board...\n")); 152 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RESET); 153 delay(5); 154 bus_space_write_1(iot, ioh, EL_AC, 0); 155 156 /* Now read the address. */ 157 DPRINTF(("Reading station address...\n")); 158 for (i = 0; i < ETHER_ADDR_LEN; i++) { 159 bus_space_write_1(iot, ioh, EL_GPBL, i); 160 station_addr[i] = bus_space_read_1(iot, ioh, EL_EAW); 161 } 162 DPRINTF(("Address is %s\n", ether_sprintf(station_addr))); 163 164 /* 165 * If the vendor code is ok, return a 1. We'll assume that whoever 166 * configured this system is right about the IRQ. 167 */ 168 if (station_addr[0] != 0x02 || station_addr[1] != 0x60 || 169 station_addr[2] != 0x8c) { 170 DPRINTF(("Bad vendor code.\n")); 171 goto out; 172 } 173 DPRINTF(("Vendor code ok.\n")); 174 175 ia->ia_iosize = 16; 176 ia->ia_msize = 0; 177 rval = 1; 178 179 out: 180 bus_space_unmap(iot, ioh, 16); 181 return rval; 182 } 183 184 /* 185 * Attach the interface to the kernel data structures. By the time this is 186 * called, we know that the card exists at the given I/O address. We still 187 * assume that the IRQ given is correct. 188 */ 189 void 190 elattach(parent, self, aux) 191 struct device *parent, *self; 192 void *aux; 193 { 194 struct el_softc *sc = (void *)self; 195 struct isa_attach_args *ia = aux; 196 bus_space_tag_t iot = ia->ia_iot; 197 bus_space_handle_t ioh; 198 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 199 u_int8_t myaddr[ETHER_ADDR_LEN]; 200 u_int8_t i; 201 202 printf("\n"); 203 204 DPRINTF(("Attaching %s...\n", sc->sc_dev.dv_xname)); 205 206 /* Map i/o space. */ 207 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) { 208 printf("%s: can't map i/o space\n", self->dv_xname); 209 return; 210 } 211 212 sc->sc_iot = iot; 213 sc->sc_ioh = ioh; 214 215 /* Reset the board. */ 216 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RESET); 217 delay(5); 218 bus_space_write_1(iot, ioh, EL_AC, 0); 219 220 /* Now read the address. */ 221 for (i = 0; i < ETHER_ADDR_LEN; i++) { 222 bus_space_write_1(iot, ioh, EL_GPBL, i); 223 myaddr[i] = bus_space_read_1(iot, ioh, EL_EAW); 224 } 225 226 /* Stop the board. */ 227 elstop(sc); 228 229 /* Initialize ifnet structure. */ 230 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 231 ifp->if_softc = sc; 232 ifp->if_start = elstart; 233 ifp->if_ioctl = elioctl; 234 ifp->if_watchdog = elwatchdog; 235 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 236 237 /* Now we can attach the interface. */ 238 DPRINTF(("Attaching interface...\n")); 239 if_attach(ifp); 240 ether_ifattach(ifp, myaddr); 241 242 /* Print out some information for the user. */ 243 printf("%s: address %s\n", self->dv_xname, ether_sprintf(myaddr)); 244 245 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 246 IPL_NET, elintr, sc); 247 248 #if NRND > 0 249 DPRINTF(("Attaching to random...\n")); 250 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 251 RND_TYPE_NET, 0); 252 #endif 253 254 DPRINTF(("elattach() finished.\n")); 255 } 256 257 /* 258 * Reset interface. 259 */ 260 void 261 elreset(sc) 262 struct el_softc *sc; 263 { 264 int s; 265 266 DPRINTF(("elreset()\n")); 267 s = splnet(); 268 elstop(sc); 269 elinit(sc); 270 splx(s); 271 } 272 273 /* 274 * Stop interface. 275 */ 276 void 277 elstop(sc) 278 struct el_softc *sc; 279 { 280 281 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EL_AC, 0); 282 } 283 284 /* 285 * Do a hardware reset of the board, and upload the ethernet address again in 286 * case the board forgets. 287 */ 288 static inline void 289 el_hardreset(sc) 290 struct el_softc *sc; 291 { 292 bus_space_tag_t iot = sc->sc_iot; 293 bus_space_handle_t ioh = sc->sc_ioh; 294 int i; 295 296 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RESET); 297 delay(5); 298 bus_space_write_1(iot, ioh, EL_AC, 0); 299 300 for (i = 0; i < ETHER_ADDR_LEN; i++) 301 bus_space_write_1(iot, ioh, i, 302 LLADDR(sc->sc_ethercom.ec_if.if_sadl)[i]); 303 } 304 305 /* 306 * Initialize interface. 307 */ 308 void 309 elinit(sc) 310 struct el_softc *sc; 311 { 312 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 313 bus_space_tag_t iot = sc->sc_iot; 314 bus_space_handle_t ioh = sc->sc_ioh; 315 316 /* First, reset the board. */ 317 el_hardreset(sc); 318 319 /* Configure rx. */ 320 DPRINTF(("Configuring rx...\n")); 321 if (ifp->if_flags & IFF_PROMISC) 322 bus_space_write_1(iot, ioh, EL_RXC, 323 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB | 324 EL_RXC_DOFLOW | EL_RXC_PROMISC); 325 else 326 bus_space_write_1(iot, ioh, EL_RXC, 327 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB | 328 EL_RXC_DOFLOW | EL_RXC_ABROAD); 329 bus_space_write_1(iot, ioh, EL_RBC, 0); 330 331 /* Configure TX. */ 332 DPRINTF(("Configuring tx...\n")); 333 bus_space_write_1(iot, ioh, EL_TXC, 0); 334 335 /* Start reception. */ 336 DPRINTF(("Starting reception...\n")); 337 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 338 339 /* Set flags appropriately. */ 340 ifp->if_flags |= IFF_RUNNING; 341 ifp->if_flags &= ~IFF_OACTIVE; 342 343 /* And start output. */ 344 elstart(ifp); 345 } 346 347 /* 348 * Start output on interface. Get datagrams from the queue and output them, 349 * giving the receiver a chance between datagrams. Call only from splnet or 350 * interrupt level! 351 */ 352 void 353 elstart(ifp) 354 struct ifnet *ifp; 355 { 356 struct el_softc *sc = ifp->if_softc; 357 bus_space_tag_t iot = sc->sc_iot; 358 bus_space_handle_t ioh = sc->sc_ioh; 359 struct mbuf *m, *m0; 360 int s, i, off, retries; 361 362 DPRINTF(("elstart()...\n")); 363 s = splnet(); 364 365 /* Don't do anything if output is active. */ 366 if ((ifp->if_flags & IFF_OACTIVE) != 0) { 367 splx(s); 368 return; 369 } 370 371 ifp->if_flags |= IFF_OACTIVE; 372 373 /* 374 * The main loop. They warned me against endless loops, but would I 375 * listen? NOOO.... 376 */ 377 for (;;) { 378 /* Dequeue the next datagram. */ 379 IF_DEQUEUE(&ifp->if_snd, m0); 380 381 /* If there's nothing to send, return. */ 382 if (m0 == 0) 383 break; 384 385 #if NBPFILTER > 0 386 /* Give the packet to the bpf, if any. */ 387 if (ifp->if_bpf) 388 bpf_mtap(ifp->if_bpf, m0); 389 #endif 390 391 /* Disable the receiver. */ 392 bus_space_write_1(iot, ioh, EL_AC, EL_AC_HOST); 393 bus_space_write_1(iot, ioh, EL_RBC, 0); 394 395 /* Transfer datagram to board. */ 396 DPRINTF(("el: xfr pkt length=%d...\n", m0->m_pkthdr.len)); 397 off = EL_BUFSIZ - max(m0->m_pkthdr.len, 398 ETHER_MIN_LEN - ETHER_CRC_LEN); 399 #ifdef DIAGNOSTIC 400 if ((off & 0xffff) != off) 401 printf("%s: bogus off 0x%x\n", 402 sc->sc_dev.dv_xname, off); 403 #endif 404 bus_space_write_1(iot, ioh, EL_GPBL, off & 0xff); 405 bus_space_write_1(iot, ioh, EL_GPBH, (off >> 8) & 0xff); 406 407 /* Copy the datagram to the buffer. */ 408 for (m = m0; m != 0; m = m->m_next) 409 bus_space_write_multi_1(iot, ioh, EL_BUF, 410 mtod(m, u_int8_t *), m->m_len); 411 412 m_freem(m0); 413 414 /* Now transmit the datagram. */ 415 retries = 0; 416 for (;;) { 417 bus_space_write_1(iot, ioh, EL_GPBL, off & 0xff); 418 bus_space_write_1(iot, ioh, EL_GPBH, (off >> 8) & 0xff); 419 if (el_xmit(sc)) { 420 ifp->if_oerrors++; 421 break; 422 } 423 /* Check out status. */ 424 i = bus_space_read_1(iot, ioh, EL_TXS); 425 DPRINTF(("tx status=0x%x\n", i)); 426 if ((i & EL_TXS_READY) == 0) { 427 DPRINTF(("el: err txs=%x\n", i)); 428 if (i & (EL_TXS_COLL | EL_TXS_COLL16)) { 429 ifp->if_collisions++; 430 if ((i & EL_TXC_DCOLL16) == 0 && 431 retries < 15) { 432 retries++; 433 bus_space_write_1(iot, ioh, 434 EL_AC, EL_AC_HOST); 435 } 436 } else { 437 ifp->if_oerrors++; 438 break; 439 } 440 } else { 441 ifp->if_opackets++; 442 break; 443 } 444 } 445 446 /* 447 * Now give the card a chance to receive. 448 * Gotta love 3c501s... 449 */ 450 (void)bus_space_read_1(iot, ioh, EL_AS); 451 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 452 splx(s); 453 /* Interrupt here. */ 454 s = splnet(); 455 } 456 457 (void)bus_space_read_1(iot, ioh, EL_AS); 458 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 459 ifp->if_flags &= ~IFF_OACTIVE; 460 splx(s); 461 } 462 463 /* 464 * This function actually attempts to transmit a datagram downloaded to the 465 * board. Call at splnet or interrupt, after downloading data! Returns 0 on 466 * success, non-0 on failure. 467 */ 468 static int 469 el_xmit(sc) 470 struct el_softc *sc; 471 { 472 bus_space_tag_t iot = sc->sc_iot; 473 bus_space_handle_t ioh = sc->sc_ioh; 474 int i; 475 476 /* 477 * XXX 478 * This busy-waits for the tx completion. Can we get an interrupt 479 * instead? 480 */ 481 482 DPRINTF(("el: xmit...")); 483 bus_space_write_1(iot, ioh, EL_AC, EL_AC_TXFRX); 484 i = 20000; 485 while ((bus_space_read_1(iot, ioh, EL_AS) & EL_AS_TXBUSY) && (i > 0)) 486 i--; 487 if (i == 0) { 488 DPRINTF(("tx not ready\n")); 489 return -1; 490 } 491 DPRINTF(("%d cycles.\n", 20000 - i)); 492 return 0; 493 } 494 495 /* 496 * Controller interrupt. 497 */ 498 int 499 elintr(arg) 500 void *arg; 501 { 502 struct el_softc *sc = arg; 503 bus_space_tag_t iot = sc->sc_iot; 504 bus_space_handle_t ioh = sc->sc_ioh; 505 u_int8_t rxstat; 506 int len; 507 508 DPRINTF(("elintr: ")); 509 510 /* Check board status. */ 511 if ((bus_space_read_1(iot, ioh, EL_AS) & EL_AS_RXBUSY) != 0) { 512 (void)bus_space_read_1(iot, ioh, EL_RXC); 513 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 514 return 0; 515 } 516 517 for (;;) { 518 rxstat = bus_space_read_1(iot, ioh, EL_RXS); 519 if (rxstat & EL_RXS_STALE) 520 break; 521 522 /* If there's an overflow, reinit the board. */ 523 if ((rxstat & EL_RXS_NOFLOW) == 0) { 524 DPRINTF(("overflow.\n")); 525 el_hardreset(sc); 526 /* Put board back into receive mode. */ 527 if (sc->sc_ethercom.ec_if.if_flags & IFF_PROMISC) 528 bus_space_write_1(iot, ioh, EL_RXC, 529 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB | 530 EL_RXC_DOFLOW | EL_RXC_PROMISC); 531 else 532 bus_space_write_1(iot, ioh, EL_RXC, 533 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB | 534 EL_RXC_DOFLOW | EL_RXC_ABROAD); 535 (void)bus_space_read_1(iot, ioh, EL_AS); 536 bus_space_write_1(iot, ioh, EL_RBC, 0); 537 break; 538 } 539 540 /* Incoming packet. */ 541 len = bus_space_read_1(iot, ioh, EL_RBL); 542 len |= bus_space_read_1(iot, ioh, EL_RBH) << 8; 543 DPRINTF(("receive len=%d rxstat=%x ", len, rxstat)); 544 bus_space_write_1(iot, ioh, EL_AC, EL_AC_HOST); 545 546 /* Pass data up to upper levels. */ 547 elread(sc, len); 548 549 /* Is there another packet? */ 550 if ((bus_space_read_1(iot, ioh, EL_AS) & EL_AS_RXBUSY) != 0) 551 break; 552 553 #if NRND > 0 554 rnd_add_uint32(&sc->rnd_source, rxstat); 555 #endif 556 557 DPRINTF(("<rescan> ")); 558 } 559 560 (void)bus_space_read_1(iot, ioh, EL_RXC); 561 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 562 return 1; 563 } 564 565 /* 566 * Pass a packet to the higher levels. 567 */ 568 void 569 elread(sc, len) 570 struct el_softc *sc; 571 int len; 572 { 573 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 574 struct mbuf *m; 575 576 if (len <= sizeof(struct ether_header) || 577 len > ETHER_MAX_LEN) { 578 printf("%s: invalid packet size %d; dropping\n", 579 sc->sc_dev.dv_xname, len); 580 ifp->if_ierrors++; 581 return; 582 } 583 584 /* Pull packet off interface. */ 585 m = elget(sc, len); 586 if (m == 0) { 587 ifp->if_ierrors++; 588 return; 589 } 590 591 ifp->if_ipackets++; 592 593 #if NBPFILTER > 0 594 /* 595 * Check if there's a BPF listener on this interface. 596 * If so, hand off the raw packet to BPF. 597 */ 598 if (ifp->if_bpf) 599 bpf_mtap(ifp->if_bpf, m); 600 #endif 601 602 (*ifp->if_input)(ifp, m); 603 } 604 605 /* 606 * Pull read data off a interface. Len is length of data, with local net 607 * header stripped. We copy the data into mbufs. When full cluster sized 608 * units are present we copy into clusters. 609 */ 610 struct mbuf * 611 elget(sc, totlen) 612 struct el_softc *sc; 613 int totlen; 614 { 615 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 616 bus_space_tag_t iot = sc->sc_iot; 617 bus_space_handle_t ioh = sc->sc_ioh; 618 struct mbuf *m, *m0, *newm; 619 int len; 620 621 MGETHDR(m0, M_DONTWAIT, MT_DATA); 622 if (m0 == 0) 623 return (0); 624 m0->m_pkthdr.rcvif = ifp; 625 m0->m_pkthdr.len = totlen; 626 len = MHLEN; 627 m = m0; 628 629 bus_space_write_1(iot, ioh, EL_GPBL, 0); 630 bus_space_write_1(iot, ioh, EL_GPBH, 0); 631 632 while (totlen > 0) { 633 if (totlen >= MINCLSIZE) { 634 MCLGET(m, M_DONTWAIT); 635 if ((m->m_flags & M_EXT) == 0) 636 goto bad; 637 len = MCLBYTES; 638 } 639 640 m->m_len = len = min(totlen, len); 641 bus_space_read_multi_1(iot, ioh, EL_BUF, mtod(m, u_int8_t *), len); 642 643 totlen -= len; 644 if (totlen > 0) { 645 MGET(newm, M_DONTWAIT, MT_DATA); 646 if (newm == 0) 647 goto bad; 648 len = MLEN; 649 m = m->m_next = newm; 650 } 651 } 652 653 bus_space_write_1(iot, ioh, EL_RBC, 0); 654 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RX); 655 656 return (m0); 657 658 bad: 659 m_freem(m0); 660 return (0); 661 } 662 663 /* 664 * Process an ioctl request. This code needs some work - it looks pretty ugly. 665 */ 666 int 667 elioctl(ifp, cmd, data) 668 struct ifnet *ifp; 669 u_long cmd; 670 caddr_t data; 671 { 672 struct el_softc *sc = ifp->if_softc; 673 struct ifaddr *ifa = (struct ifaddr *)data; 674 int s, error = 0; 675 676 s = splnet(); 677 678 switch (cmd) { 679 680 case SIOCSIFADDR: 681 ifp->if_flags |= IFF_UP; 682 683 switch (ifa->ifa_addr->sa_family) { 684 #ifdef INET 685 case AF_INET: 686 elinit(sc); 687 arp_ifinit(ifp, ifa); 688 break; 689 #endif 690 #ifdef NS 691 /* XXX - This code is probably wrong. */ 692 case AF_NS: 693 { 694 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 695 696 if (ns_nullhost(*ina)) 697 ina->x_host = 698 *(union ns_host *)LLADDR(ifp->if_sadl); 699 else 700 bcopy(ina->x_host.c_host, LLADDR(ifp->if_sadl), 701 ETHER_ADDR_LEN); 702 /* Set new address. */ 703 elinit(sc); 704 break; 705 } 706 #endif 707 default: 708 elinit(sc); 709 break; 710 } 711 break; 712 713 case SIOCSIFFLAGS: 714 if ((ifp->if_flags & IFF_UP) == 0 && 715 (ifp->if_flags & IFF_RUNNING) != 0) { 716 /* 717 * If interface is marked down and it is running, then 718 * stop it. 719 */ 720 elstop(sc); 721 ifp->if_flags &= ~IFF_RUNNING; 722 } else if ((ifp->if_flags & IFF_UP) != 0 && 723 (ifp->if_flags & IFF_RUNNING) == 0) { 724 /* 725 * If interface is marked up and it is stopped, then 726 * start it. 727 */ 728 elinit(sc); 729 } else { 730 /* 731 * Some other important flag might have changed, so 732 * reset. 733 */ 734 elreset(sc); 735 } 736 break; 737 738 default: 739 error = EINVAL; 740 break; 741 } 742 743 splx(s); 744 return error; 745 } 746 747 /* 748 * Device timeout routine. 749 */ 750 void 751 elwatchdog(ifp) 752 struct ifnet *ifp; 753 { 754 struct el_softc *sc = ifp->if_softc; 755 756 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 757 sc->sc_ethercom.ec_if.if_oerrors++; 758 759 elreset(sc); 760 } 761
Indexes created Tue Oct 14 06:10:07 GMT 2025