if_el.c revision 1.63
1 /* $NetBSD: if_el.c,v 1.63 2000/12/14 06:59:57 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 IFQ_SET_READY(&ifp->if_snd); 237 238 /* Now we can attach the interface. */ 239 DPRINTF(("Attaching interface...\n")); 240 if_attach(ifp); 241 ether_ifattach(ifp, myaddr); 242 243 /* Print out some information for the user. */ 244 printf("%s: address %s\n", self->dv_xname, ether_sprintf(myaddr)); 245 246 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 247 IPL_NET, elintr, sc); 248 249 #if NRND > 0 250 DPRINTF(("Attaching to random...\n")); 251 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 252 RND_TYPE_NET, 0); 253 #endif 254 255 DPRINTF(("elattach() finished.\n")); 256 } 257 258 /* 259 * Reset interface. 260 */ 261 void 262 elreset(sc) 263 struct el_softc *sc; 264 { 265 int s; 266 267 DPRINTF(("elreset()\n")); 268 s = splnet(); 269 elstop(sc); 270 elinit(sc); 271 splx(s); 272 } 273 274 /* 275 * Stop interface. 276 */ 277 void 278 elstop(sc) 279 struct el_softc *sc; 280 { 281 282 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EL_AC, 0); 283 } 284 285 /* 286 * Do a hardware reset of the board, and upload the ethernet address again in 287 * case the board forgets. 288 */ 289 static inline void 290 el_hardreset(sc) 291 struct el_softc *sc; 292 { 293 bus_space_tag_t iot = sc->sc_iot; 294 bus_space_handle_t ioh = sc->sc_ioh; 295 int i; 296 297 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RESET); 298 delay(5); 299 bus_space_write_1(iot, ioh, EL_AC, 0); 300 301 for (i = 0; i < ETHER_ADDR_LEN; i++) 302 bus_space_write_1(iot, ioh, i, 303 LLADDR(sc->sc_ethercom.ec_if.if_sadl)[i]); 304 } 305 306 /* 307 * Initialize interface. 308 */ 309 void 310 elinit(sc) 311 struct el_softc *sc; 312 { 313 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 314 bus_space_tag_t iot = sc->sc_iot; 315 bus_space_handle_t ioh = sc->sc_ioh; 316 317 /* First, reset the board. */ 318 el_hardreset(sc); 319 320 /* Configure rx. */ 321 DPRINTF(("Configuring rx...\n")); 322 if (ifp->if_flags & IFF_PROMISC) 323 bus_space_write_1(iot, ioh, EL_RXC, 324 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB | 325 EL_RXC_DOFLOW | EL_RXC_PROMISC); 326 else 327 bus_space_write_1(iot, ioh, EL_RXC, 328 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB | 329 EL_RXC_DOFLOW | EL_RXC_ABROAD); 330 bus_space_write_1(iot, ioh, EL_RBC, 0); 331 332 /* Configure TX. */ 333 DPRINTF(("Configuring tx...\n")); 334 bus_space_write_1(iot, ioh, EL_TXC, 0); 335 336 /* Start reception. */ 337 DPRINTF(("Starting reception...\n")); 338 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 339 340 /* Set flags appropriately. */ 341 ifp->if_flags |= IFF_RUNNING; 342 ifp->if_flags &= ~IFF_OACTIVE; 343 344 /* And start output. */ 345 elstart(ifp); 346 } 347 348 /* 349 * Start output on interface. Get datagrams from the queue and output them, 350 * giving the receiver a chance between datagrams. Call only from splnet or 351 * interrupt level! 352 */ 353 void 354 elstart(ifp) 355 struct ifnet *ifp; 356 { 357 struct el_softc *sc = ifp->if_softc; 358 bus_space_tag_t iot = sc->sc_iot; 359 bus_space_handle_t ioh = sc->sc_ioh; 360 struct mbuf *m, *m0; 361 int s, i, off, retries; 362 363 DPRINTF(("elstart()...\n")); 364 s = splnet(); 365 366 /* Don't do anything if output is active. */ 367 if ((ifp->if_flags & IFF_OACTIVE) != 0) { 368 splx(s); 369 return; 370 } 371 372 ifp->if_flags |= IFF_OACTIVE; 373 374 /* 375 * The main loop. They warned me against endless loops, but would I 376 * listen? NOOO.... 377 */ 378 for (;;) { 379 /* Dequeue the next datagram. */ 380 IFQ_DEQUEUE(&ifp->if_snd, m0); 381 382 /* If there's nothing to send, return. */ 383 if (m0 == 0) 384 break; 385 386 #if NBPFILTER > 0 387 /* Give the packet to the bpf, if any. */ 388 if (ifp->if_bpf) 389 bpf_mtap(ifp->if_bpf, m0); 390 #endif 391 392 /* Disable the receiver. */ 393 bus_space_write_1(iot, ioh, EL_AC, EL_AC_HOST); 394 bus_space_write_1(iot, ioh, EL_RBC, 0); 395 396 /* Transfer datagram to board. */ 397 DPRINTF(("el: xfr pkt length=%d...\n", m0->m_pkthdr.len)); 398 off = EL_BUFSIZ - max(m0->m_pkthdr.len, 399 ETHER_MIN_LEN - ETHER_CRC_LEN); 400 #ifdef DIAGNOSTIC 401 if ((off & 0xffff) != off) 402 printf("%s: bogus off 0x%x\n", 403 sc->sc_dev.dv_xname, off); 404 #endif 405 bus_space_write_1(iot, ioh, EL_GPBL, off & 0xff); 406 bus_space_write_1(iot, ioh, EL_GPBH, (off >> 8) & 0xff); 407 408 /* Copy the datagram to the buffer. */ 409 for (m = m0; m != 0; m = m->m_next) 410 bus_space_write_multi_1(iot, ioh, EL_BUF, 411 mtod(m, u_int8_t *), m->m_len); 412 413 m_freem(m0); 414 415 /* Now transmit the datagram. */ 416 retries = 0; 417 for (;;) { 418 bus_space_write_1(iot, ioh, EL_GPBL, off & 0xff); 419 bus_space_write_1(iot, ioh, EL_GPBH, (off >> 8) & 0xff); 420 if (el_xmit(sc)) { 421 ifp->if_oerrors++; 422 break; 423 } 424 /* Check out status. */ 425 i = bus_space_read_1(iot, ioh, EL_TXS); 426 DPRINTF(("tx status=0x%x\n", i)); 427 if ((i & EL_TXS_READY) == 0) { 428 DPRINTF(("el: err txs=%x\n", i)); 429 if (i & (EL_TXS_COLL | EL_TXS_COLL16)) { 430 ifp->if_collisions++; 431 if ((i & EL_TXC_DCOLL16) == 0 && 432 retries < 15) { 433 retries++; 434 bus_space_write_1(iot, ioh, 435 EL_AC, EL_AC_HOST); 436 } 437 } else { 438 ifp->if_oerrors++; 439 break; 440 } 441 } else { 442 ifp->if_opackets++; 443 break; 444 } 445 } 446 447 /* 448 * Now give the card a chance to receive. 449 * Gotta love 3c501s... 450 */ 451 (void)bus_space_read_1(iot, ioh, EL_AS); 452 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 453 splx(s); 454 /* Interrupt here. */ 455 s = splnet(); 456 } 457 458 (void)bus_space_read_1(iot, ioh, EL_AS); 459 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 460 ifp->if_flags &= ~IFF_OACTIVE; 461 splx(s); 462 } 463 464 /* 465 * This function actually attempts to transmit a datagram downloaded to the 466 * board. Call at splnet or interrupt, after downloading data! Returns 0 on 467 * success, non-0 on failure. 468 */ 469 static int 470 el_xmit(sc) 471 struct el_softc *sc; 472 { 473 bus_space_tag_t iot = sc->sc_iot; 474 bus_space_handle_t ioh = sc->sc_ioh; 475 int i; 476 477 /* 478 * XXX 479 * This busy-waits for the tx completion. Can we get an interrupt 480 * instead? 481 */ 482 483 DPRINTF(("el: xmit...")); 484 bus_space_write_1(iot, ioh, EL_AC, EL_AC_TXFRX); 485 i = 20000; 486 while ((bus_space_read_1(iot, ioh, EL_AS) & EL_AS_TXBUSY) && (i > 0)) 487 i--; 488 if (i == 0) { 489 DPRINTF(("tx not ready\n")); 490 return -1; 491 } 492 DPRINTF(("%d cycles.\n", 20000 - i)); 493 return 0; 494 } 495 496 /* 497 * Controller interrupt. 498 */ 499 int 500 elintr(arg) 501 void *arg; 502 { 503 struct el_softc *sc = arg; 504 bus_space_tag_t iot = sc->sc_iot; 505 bus_space_handle_t ioh = sc->sc_ioh; 506 u_int8_t rxstat; 507 int len; 508 509 DPRINTF(("elintr: ")); 510 511 /* Check board status. */ 512 if ((bus_space_read_1(iot, ioh, EL_AS) & EL_AS_RXBUSY) != 0) { 513 (void)bus_space_read_1(iot, ioh, EL_RXC); 514 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 515 return 0; 516 } 517 518 for (;;) { 519 rxstat = bus_space_read_1(iot, ioh, EL_RXS); 520 if (rxstat & EL_RXS_STALE) 521 break; 522 523 /* If there's an overflow, reinit the board. */ 524 if ((rxstat & EL_RXS_NOFLOW) == 0) { 525 DPRINTF(("overflow.\n")); 526 el_hardreset(sc); 527 /* Put board back into receive mode. */ 528 if (sc->sc_ethercom.ec_if.if_flags & IFF_PROMISC) 529 bus_space_write_1(iot, ioh, EL_RXC, 530 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB | 531 EL_RXC_DOFLOW | EL_RXC_PROMISC); 532 else 533 bus_space_write_1(iot, ioh, EL_RXC, 534 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB | 535 EL_RXC_DOFLOW | EL_RXC_ABROAD); 536 (void)bus_space_read_1(iot, ioh, EL_AS); 537 bus_space_write_1(iot, ioh, EL_RBC, 0); 538 break; 539 } 540 541 /* Incoming packet. */ 542 len = bus_space_read_1(iot, ioh, EL_RBL); 543 len |= bus_space_read_1(iot, ioh, EL_RBH) << 8; 544 DPRINTF(("receive len=%d rxstat=%x ", len, rxstat)); 545 bus_space_write_1(iot, ioh, EL_AC, EL_AC_HOST); 546 547 /* Pass data up to upper levels. */ 548 elread(sc, len); 549 550 /* Is there another packet? */ 551 if ((bus_space_read_1(iot, ioh, EL_AS) & EL_AS_RXBUSY) != 0) 552 break; 553 554 #if NRND > 0 555 rnd_add_uint32(&sc->rnd_source, rxstat); 556 #endif 557 558 DPRINTF(("<rescan> ")); 559 } 560 561 (void)bus_space_read_1(iot, ioh, EL_RXC); 562 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 563 return 1; 564 } 565 566 /* 567 * Pass a packet to the higher levels. 568 */ 569 void 570 elread(sc, len) 571 struct el_softc *sc; 572 int len; 573 { 574 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 575 struct mbuf *m; 576 577 if (len <= sizeof(struct ether_header) || 578 len > ETHER_MAX_LEN) { 579 printf("%s: invalid packet size %d; dropping\n", 580 sc->sc_dev.dv_xname, len); 581 ifp->if_ierrors++; 582 return; 583 } 584 585 /* Pull packet off interface. */ 586 m = elget(sc, len); 587 if (m == 0) { 588 ifp->if_ierrors++; 589 return; 590 } 591 592 ifp->if_ipackets++; 593 594 #if NBPFILTER > 0 595 /* 596 * Check if there's a BPF listener on this interface. 597 * If so, hand off the raw packet to BPF. 598 */ 599 if (ifp->if_bpf) 600 bpf_mtap(ifp->if_bpf, m); 601 #endif 602 603 (*ifp->if_input)(ifp, m); 604 } 605 606 /* 607 * Pull read data off a interface. Len is length of data, with local net 608 * header stripped. We copy the data into mbufs. When full cluster sized 609 * units are present we copy into clusters. 610 */ 611 struct mbuf * 612 elget(sc, totlen) 613 struct el_softc *sc; 614 int totlen; 615 { 616 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 617 bus_space_tag_t iot = sc->sc_iot; 618 bus_space_handle_t ioh = sc->sc_ioh; 619 struct mbuf *m, *m0, *newm; 620 int len; 621 622 MGETHDR(m0, M_DONTWAIT, MT_DATA); 623 if (m0 == 0) 624 return (0); 625 m0->m_pkthdr.rcvif = ifp; 626 m0->m_pkthdr.len = totlen; 627 len = MHLEN; 628 m = m0; 629 630 bus_space_write_1(iot, ioh, EL_GPBL, 0); 631 bus_space_write_1(iot, ioh, EL_GPBH, 0); 632 633 while (totlen > 0) { 634 if (totlen >= MINCLSIZE) { 635 MCLGET(m, M_DONTWAIT); 636 if ((m->m_flags & M_EXT) == 0) 637 goto bad; 638 len = MCLBYTES; 639 } 640 641 m->m_len = len = min(totlen, len); 642 bus_space_read_multi_1(iot, ioh, EL_BUF, mtod(m, u_int8_t *), len); 643 644 totlen -= len; 645 if (totlen > 0) { 646 MGET(newm, M_DONTWAIT, MT_DATA); 647 if (newm == 0) 648 goto bad; 649 len = MLEN; 650 m = m->m_next = newm; 651 } 652 } 653 654 bus_space_write_1(iot, ioh, EL_RBC, 0); 655 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RX); 656 657 return (m0); 658 659 bad: 660 m_freem(m0); 661 return (0); 662 } 663 664 /* 665 * Process an ioctl request. This code needs some work - it looks pretty ugly. 666 */ 667 int 668 elioctl(ifp, cmd, data) 669 struct ifnet *ifp; 670 u_long cmd; 671 caddr_t data; 672 { 673 struct el_softc *sc = ifp->if_softc; 674 struct ifaddr *ifa = (struct ifaddr *)data; 675 int s, error = 0; 676 677 s = splnet(); 678 679 switch (cmd) { 680 681 case SIOCSIFADDR: 682 ifp->if_flags |= IFF_UP; 683 684 switch (ifa->ifa_addr->sa_family) { 685 #ifdef INET 686 case AF_INET: 687 elinit(sc); 688 arp_ifinit(ifp, ifa); 689 break; 690 #endif 691 #ifdef NS 692 /* XXX - This code is probably wrong. */ 693 case AF_NS: 694 { 695 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 696 697 if (ns_nullhost(*ina)) 698 ina->x_host = 699 *(union ns_host *)LLADDR(ifp->if_sadl); 700 else 701 bcopy(ina->x_host.c_host, LLADDR(ifp->if_sadl), 702 ETHER_ADDR_LEN); 703 /* Set new address. */ 704 elinit(sc); 705 break; 706 } 707 #endif 708 default: 709 elinit(sc); 710 break; 711 } 712 break; 713 714 case SIOCSIFFLAGS: 715 if ((ifp->if_flags & IFF_UP) == 0 && 716 (ifp->if_flags & IFF_RUNNING) != 0) { 717 /* 718 * If interface is marked down and it is running, then 719 * stop it. 720 */ 721 elstop(sc); 722 ifp->if_flags &= ~IFF_RUNNING; 723 } else if ((ifp->if_flags & IFF_UP) != 0 && 724 (ifp->if_flags & IFF_RUNNING) == 0) { 725 /* 726 * If interface is marked up and it is stopped, then 727 * start it. 728 */ 729 elinit(sc); 730 } else { 731 /* 732 * Some other important flag might have changed, so 733 * reset. 734 */ 735 elreset(sc); 736 } 737 break; 738 739 default: 740 error = EINVAL; 741 break; 742 } 743 744 splx(s); 745 return error; 746 } 747 748 /* 749 * Device timeout routine. 750 */ 751 void 752 elwatchdog(ifp) 753 struct ifnet *ifp; 754 { 755 struct el_softc *sc = ifp->if_softc; 756 757 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 758 sc->sc_ethercom.ec_if.if_oerrors++; 759 760 elreset(sc); 761 } 762
Indexes created Fri Oct 03 02:09:57 GMT 2025