if_ec.c revision 1.26
1 /* $NetBSD: if_ec.c,v 1.26 2016/12/08 01:12:01 ozaki-r Exp $ */ 2 3 /* 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matthew Fredette. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * 3Com 3C400 device driver 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: if_ec.c,v 1.26 2016/12/08 01:12:01 ozaki-r Exp $"); 38 39 #include "opt_inet.h" 40 #include "opt_ns.h" 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/errno.h> 45 #include <sys/ioctl.h> 46 #include <sys/mbuf.h> 47 #include <sys/socket.h> 48 #include <sys/syslog.h> 49 #include <sys/device.h> 50 #include <sys/endian.h> 51 #include <sys/rndsource.h> 52 53 #include <net/if.h> 54 #include <net/if_dl.h> 55 #include <net/if_types.h> 56 57 #include <net/if_ether.h> 58 #include <net/if_media.h> 59 60 #ifdef INET 61 #include <netinet/in.h> 62 #include <netinet/in_systm.h> 63 #include <netinet/in_var.h> 64 #include <netinet/ip.h> 65 #include <netinet/if_inarp.h> 66 #endif 67 68 #include <net/bpf.h> 69 #include <net/bpfdesc.h> 70 71 #include <machine/cpu.h> 72 #include <machine/autoconf.h> 73 #include <machine/idprom.h> 74 #include <machine/bus.h> 75 #include <machine/intr.h> 76 77 #include <sun2/dev/if_ecreg.h> 78 79 /* 80 * Interface softc. 81 */ 82 struct ec_softc { 83 device_t sc_dev; 84 void *sc_ih; 85 86 struct ethercom sc_ethercom; /* ethernet common */ 87 struct ifmedia sc_media; /* our supported media */ 88 89 bus_space_tag_t sc_iot; /* bus space tag */ 90 bus_space_handle_t sc_ioh; /* bus space handle */ 91 92 u_char sc_jammed; /* nonzero if the net is jammed */ 93 u_char sc_colliding; /* nonzero if the net is colliding */ 94 uint32_t sc_backoff_seed; /* seed for the backoff PRNG */ 95 96 krndsource_t rnd_source; 97 }; 98 99 /* Macros to read and write the CSR. */ 100 #define ECREG_CSR_RD bus_space_read_2(sc->sc_iot, sc->sc_ioh, ECREG_CSR) 101 #define ECREG_CSR_WR(val) bus_space_write_2(sc->sc_iot, sc->sc_ioh, ECREG_CSR, val) 102 103 /* After this many collisions, the packet is dropped. */ 104 #define EC_COLLISIONS_JAMMED 16 105 106 /* 107 * Various constants used in the backoff pseudorandom 108 * number generator. 109 */ 110 #define EC_BACKOFF_PRNG_COLL_MAX 10 111 #define EC_BACKOFF_PRNG_MUL 1103515245 112 #define EC_BACKOFF_PRNG_ADD 12345 113 #define EC_BACKOFF_PRNG_MASK 0x7fffffff 114 115 /* 116 * Prototypes 117 */ 118 int ec_intr(void *); 119 void ec_reset(struct ifnet *); 120 int ec_init(struct ifnet *); 121 int ec_ioctl(struct ifnet *, u_long, void *); 122 void ec_watchdog(struct ifnet *); 123 void ec_start(struct ifnet *); 124 125 void ec_recv(struct ec_softc *, int); 126 void ec_coll(struct ec_softc *); 127 void ec_copyin(struct ec_softc *, void *, int, size_t); 128 void ec_copyout(struct ec_softc *, const void *, int, size_t); 129 130 int ec_mediachange(struct ifnet *); 131 void ec_mediastatus(struct ifnet *, struct ifmediareq *); 132 133 int ec_match(device_t, cfdata_t, void *); 134 void ec_attach(device_t, device_t, void *); 135 136 CFATTACH_DECL_NEW(ec, sizeof(struct ec_softc), 137 ec_match, ec_attach, NULL, NULL); 138 139 /* 140 * Copy board memory to kernel. 141 */ 142 void 143 ec_copyin(struct ec_softc *sc, void *p, int offset, size_t size) 144 { 145 146 bus_space_copyin(sc->sc_iot, sc->sc_ioh, offset, p, size); 147 } 148 149 /* 150 * Copy from kernel space to board memory. 151 */ 152 void 153 ec_copyout(struct ec_softc *sc, const void *p, int offset, size_t size) 154 { 155 156 bus_space_copyout(sc->sc_iot, sc->sc_ioh, offset, p, size); 157 } 158 159 int 160 ec_match(device_t parent, cfdata_t cf, void *aux) 161 { 162 struct mbmem_attach_args *mbma = aux; 163 bus_space_handle_t bh; 164 bool matched; 165 166 /* No default Multibus address. */ 167 if (mbma->mbma_paddr == -1) 168 return 0; 169 170 /* Make sure there is something there... */ 171 if (bus_space_map(mbma->mbma_bustag, mbma->mbma_paddr, ECREG_BANK_SZ, 172 0, &bh)) 173 return 0; 174 matched = (bus_space_peek_2(mbma->mbma_bustag, bh, 0, NULL) == 0); 175 bus_space_unmap(mbma->mbma_bustag, bh, ECREG_BANK_SZ); 176 if (!matched) 177 return 0; 178 179 /* Default interrupt priority. */ 180 if (mbma->mbma_pri == -1) 181 mbma->mbma_pri = 3; 182 183 return 1; 184 } 185 186 void 187 ec_attach(device_t parent, device_t self, void *aux) 188 { 189 struct ec_softc *sc = device_private(self); 190 struct mbmem_attach_args *mbma = aux; 191 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 192 uint8_t myaddr[ETHER_ADDR_LEN]; 193 194 sc->sc_dev = self; 195 196 aprint_normal("\n"); 197 198 /* Map in the board control regs. */ 199 sc->sc_iot = mbma->mbma_bustag; 200 if (bus_space_map(mbma->mbma_bustag, mbma->mbma_paddr, ECREG_BANK_SZ, 201 0, &sc->sc_ioh)) 202 panic("%s: can't map regs", __func__); 203 204 /* Reset the board. */ 205 ECREG_CSR_WR(EC_CSR_RESET); 206 delay(160); 207 208 /* 209 * Copy out the board ROM Ethernet address, 210 * and use the non-vendor-ID part to seed 211 * our backoff pseudorandom number generator. 212 */ 213 bus_space_read_region_1(sc->sc_iot, sc->sc_ioh, 214 ECREG_AROM, myaddr, ETHER_ADDR_LEN); 215 sc->sc_backoff_seed = 216 (myaddr[3] << 16) | (myaddr[4] << 8) | (myaddr[5]) | 1; 217 218 /* Initialize ifnet structure. */ 219 strcpy(ifp->if_xname, device_xname(self)); 220 ifp->if_softc = sc; 221 ifp->if_start = ec_start; 222 ifp->if_ioctl = ec_ioctl; 223 ifp->if_init = ec_init; 224 ifp->if_watchdog = ec_watchdog; 225 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 226 IFQ_SET_READY(&ifp->if_snd); 227 228 /* Initialize ifmedia structures. */ 229 ifmedia_init(&sc->sc_media, 0, ec_mediachange, ec_mediastatus); 230 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL); 231 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL); 232 233 /* Now we can attach the interface. */ 234 if_attach(ifp); 235 if_deferred_start_init(ifp, NULL); 236 idprom_etheraddr(myaddr); 237 ether_ifattach(ifp, myaddr); 238 aprint_normal_dev(self, "address %s\n", ether_sprintf(myaddr)); 239 240 bus_intr_establish(mbma->mbma_bustag, mbma->mbma_pri, IPL_NET, 0, 241 ec_intr, sc); 242 243 rnd_attach_source(&sc->rnd_source, device_xname(self), 244 RND_TYPE_NET, RND_FLAG_DEFAULT); 245 } 246 247 /* 248 * Reset interface. 249 */ 250 void 251 ec_reset(struct ifnet *ifp) 252 { 253 int s; 254 255 s = splnet(); 256 ec_init(ifp); 257 splx(s); 258 } 259 260 261 /* 262 * Initialize interface. 263 */ 264 int 265 ec_init(struct ifnet *ifp) 266 { 267 struct ec_softc *sc = ifp->if_softc; 268 269 /* Reset the board. */ 270 ECREG_CSR_WR(EC_CSR_RESET); 271 delay(160); 272 273 /* Set the Ethernet address. */ 274 bus_space_write_region_1(sc->sc_iot, sc->sc_ioh, 275 ECREG_ARAM, CLLADDR(sc->sc_ethercom.ec_if.if_sadl), ETHER_ADDR_LEN); 276 ECREG_CSR_WR((ECREG_CSR_RD & EC_CSR_INTPA) | EC_CSR_AMSW); 277 ECREG_CSR_WR(ECREG_CSR_RD & 0); 278 279 /* Enable interrupts. */ 280 ECREG_CSR_WR((ECREG_CSR_RD & EC_CSR_INTPA) | 281 EC_CSR_BBSW | EC_CSR_ABSW | EC_CSR_BINT | EC_CSR_AINT | 282 (ifp->if_flags & IFF_PROMISC ? EC_CSR_PROMISC : EC_CSR_PA)); 283 284 /* Set flags appropriately. */ 285 ifp->if_flags |= IFF_RUNNING; 286 ifp->if_flags &= ~IFF_OACTIVE; 287 288 /* Start output. */ 289 ec_start(ifp); 290 291 return 0; 292 } 293 294 /* 295 * Start output on interface. 296 */ 297 void 298 ec_start(struct ifnet *ifp) 299 { 300 struct ec_softc *sc = ifp->if_softc; 301 struct mbuf *m, *m0; 302 int s; 303 u_int count, realcount; 304 bus_size_t off; 305 static uint8_t padding[ETHER_MIN_LEN - ETHER_CRC_LEN] = {0}; 306 307 s = splnet(); 308 309 /* Don't do anything if output is active. */ 310 if ((ifp->if_flags & IFF_OACTIVE) != 0) { 311 splx(s); 312 return; 313 } 314 /* Don't do anything if the output queue is empty. */ 315 IFQ_DEQUEUE(&ifp->if_snd, m0); 316 if (m0 == NULL) { 317 splx(s); 318 return; 319 } 320 321 /* The BPF tap. */ 322 bpf_mtap(ifp, m0); 323 324 /* Size the packet. */ 325 count = EC_BUF_SZ - m0->m_pkthdr.len; 326 327 /* Copy the packet into the xmit buffer. */ 328 realcount = MIN(count, EC_PKT_MAXTDOFF); 329 bus_space_write_2(sc->sc_iot, sc->sc_ioh, ECREG_TBUF, realcount); 330 for (off = realcount, m = m0; m != 0; off += m->m_len, m = m->m_next) 331 ec_copyout(sc, mtod(m, uint8_t *), ECREG_TBUF + off, m->m_len); 332 m_freem(m0); 333 if (count - realcount) 334 ec_copyout(sc, padding, ECREG_TBUF + off, count - realcount); 335 336 /* Enable the transmitter. */ 337 ECREG_CSR_WR((ECREG_CSR_RD & EC_CSR_PA) | 338 EC_CSR_TBSW | EC_CSR_TINT | EC_CSR_JINT); 339 ifp->if_flags |= IFF_OACTIVE; 340 341 /* Done. */ 342 splx(s); 343 } 344 345 /* 346 * Controller interrupt. 347 */ 348 int 349 ec_intr(void *arg) 350 { 351 struct ec_softc *sc = arg; 352 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 353 int recv_first; 354 int recv_second; 355 int retval; 356 357 retval = 0; 358 359 /* Check for received packet(s). */ 360 recv_first = recv_second = 0; 361 switch (ECREG_CSR_RD & (EC_CSR_BBSW | EC_CSR_ABSW | EC_CSR_RBBA)) { 362 363 case (EC_CSR_BBSW | EC_CSR_ABSW): 364 case (EC_CSR_BBSW | EC_CSR_ABSW | EC_CSR_RBBA): 365 /* Neither buffer is full. Is this a transmit interrupt? 366 * Acknowledge the interrupt ourselves. */ 367 ECREG_CSR_WR(ECREG_CSR_RD & 368 (EC_CSR_TINT | EC_CSR_JINT | EC_CSR_PAMASK)); 369 ECREG_CSR_WR((ECREG_CSR_RD & EC_CSR_INTPA) | 370 EC_CSR_BINT | EC_CSR_AINT); 371 break; 372 373 case EC_CSR_BBSW: 374 case (EC_CSR_BBSW | EC_CSR_RBBA): 375 /* Only the A buffer is full. */ 376 recv_first = EC_CSR_AINT; 377 break; 378 379 case EC_CSR_ABSW: 380 case (EC_CSR_ABSW | EC_CSR_RBBA): 381 /* Only the B buffer is full. */ 382 recv_first = EC_CSR_BINT; 383 break; 384 385 case 0: 386 /* Both the A buffer and the B buffer are full, and the A 387 * buffer is older than the B buffer. */ 388 recv_first = EC_CSR_AINT; 389 recv_second = EC_CSR_BINT; 390 break; 391 392 case EC_CSR_RBBA: 393 /* Both the A buffer and the B buffer are full, and the B 394 * buffer is older than the A buffer. */ 395 recv_first = EC_CSR_BINT; 396 recv_second = EC_CSR_AINT; 397 break; 398 } 399 400 /* Receive packets. */ 401 if (recv_first) { 402 403 /* Acknowledge the interrupt. */ 404 ECREG_CSR_WR(ECREG_CSR_RD & 405 ((EC_CSR_BINT | EC_CSR_AINT | EC_CSR_TINT | EC_CSR_JINT | 406 EC_CSR_PAMASK) ^ (recv_first | recv_second))); 407 408 /* Receive a packet. */ 409 ec_recv(sc, recv_first); 410 411 /* Receive a packet. */ 412 if (recv_second) 413 ec_recv(sc, recv_second); 414 415 retval++; 416 } 417 /* Check for a transmitted packet. */ 418 if (ifp->if_flags & IFF_OACTIVE) { 419 420 /* If we got a collision. */ 421 if (ECREG_CSR_RD & EC_CSR_JAM) { 422 ECREG_CSR_WR(ECREG_CSR_RD & 423 (EC_CSR_BINT | EC_CSR_AINT | EC_CSR_PAMASK)); 424 sc->sc_ethercom.ec_if.if_collisions++; 425 retval++; 426 ec_coll(sc); 427 428 } 429 /* If we transmitted a packet. */ 430 else if ((ECREG_CSR_RD & EC_CSR_TBSW) == 0) { 431 ECREG_CSR_WR(ECREG_CSR_RD & 432 (EC_CSR_BINT | EC_CSR_AINT | EC_CSR_PAMASK)); 433 retval++; 434 sc->sc_ethercom.ec_if.if_opackets++; 435 sc->sc_jammed = 0; 436 ifp->if_flags &= ~IFF_OACTIVE; 437 if_schedule_deferred_start(ifp); 438 } 439 } else { 440 441 /* Make sure we disable transmitter interrupts. */ 442 ECREG_CSR_WR(ECREG_CSR_RD & 443 (EC_CSR_BINT | EC_CSR_AINT | EC_CSR_PAMASK)); 444 } 445 446 return retval; 447 } 448 449 /* 450 * Read in a packet from the board. 451 */ 452 void 453 ec_recv(struct ec_softc *sc, int intbit) 454 { 455 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 456 struct mbuf *m0, *m, *newm; 457 bus_size_t buf; 458 uint16_t status; 459 uint16_t doff; 460 int length, total_length; 461 462 buf = EC_CSR_INT_BUF(intbit); 463 464 /* Read in the packet status. */ 465 status = bus_space_read_2(sc->sc_iot, sc->sc_ioh, buf); 466 doff = status & EC_PKT_DOFF; 467 468 for (total_length = -1, m0 = NULL;;) { 469 470 /* Check for an error. */ 471 if (status & (EC_PKT_FCSERR | EC_PKT_RGERR | EC_PKT_FRERR) || 472 doff < EC_PKT_MINRDOFF || 473 doff > EC_PKT_MAXRDOFF) { 474 printf("%s: garbled packet, status 0x%04x; dropping\n", 475 device_xname(sc->sc_dev), (unsigned int)status); 476 break; 477 } 478 479 /* Adjust for the header. */ 480 total_length = doff - EC_PKT_RDOFF; 481 buf += EC_PKT_RDOFF; 482 483 /* XXX - sometimes the card reports a large data offset. */ 484 if (total_length > (ETHER_MAX_LEN - ETHER_CRC_LEN)) { 485 #ifdef DEBUG 486 printf("%s: fixing too-large length of %d\n", 487 device_xname(sc->sc_dev), total_length); 488 #endif 489 total_length = (ETHER_MAX_LEN - ETHER_CRC_LEN); 490 } 491 492 MGETHDR(m0, M_DONTWAIT, MT_DATA); 493 if (m0 == NULL) 494 break; 495 m_set_rcvif(m0, ifp); 496 m0->m_pkthdr.len = total_length; 497 length = MHLEN; 498 m = m0; 499 500 while (total_length > 0) { 501 if (total_length >= MINCLSIZE) { 502 MCLGET(m, M_DONTWAIT); 503 if ((m->m_flags & M_EXT) == 0) 504 break; 505 length = MCLBYTES; 506 } 507 m->m_len = length = min(total_length, length); 508 ec_copyin(sc, mtod(m, uint8_t *), buf, length); 509 total_length -= length; 510 buf += length; 511 512 if (total_length > 0) { 513 MGET(newm, M_DONTWAIT, MT_DATA); 514 if (newm == NULL) 515 break; 516 length = MLEN; 517 m = m->m_next = newm; 518 } 519 } 520 break; 521 } 522 523 if (total_length == 0) { 524 ifp->if_ipackets++; 525 526 /* 527 * Check if there's a BPF listener on this interface. 528 * If so, hand off the raw packet to BPF. 529 */ 530 bpf_mtap(ifp, m0); 531 532 /* Pass the packet up. */ 533 if_percpuq_enqueue(ifp->if_percpuq, m0); 534 535 } else { 536 /* Something went wrong. */ 537 if (m0 != NULL) 538 m_freem(m0); 539 ifp->if_ierrors++; 540 } 541 542 /* Give the receive buffer back to the card. */ 543 buf = EC_CSR_INT_BUF(intbit); 544 bus_space_write_2(sc->sc_iot, sc->sc_ioh, buf, 0); 545 ECREG_CSR_WR((ECREG_CSR_RD & EC_CSR_INTPA) | 546 EC_CSR_INT_BSW(intbit) | intbit); 547 } 548 549 int 550 ec_mediachange(struct ifnet *ifp) 551 { 552 553 return 0; 554 } 555 556 void 557 ec_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 558 { 559 560 if ((ifp->if_flags & IFF_UP) == 0) 561 return; 562 563 ifmr->ifm_status = IFM_AVALID | IFM_ACTIVE; 564 } 565 566 /* 567 * Process an ioctl request. This code needs some work - it looks pretty ugly. 568 */ 569 int 570 ec_ioctl(struct ifnet *ifp, u_long cmd, void *data) 571 { 572 struct ifaddr *ifa = (struct ifaddr *)data; 573 struct ifreq *ifr = (struct ifreq *)data; 574 struct ec_softc *sc = ifp->if_softc; 575 int s, error = 0; 576 577 s = splnet(); 578 579 switch (cmd) { 580 581 case SIOCINITIFADDR: 582 ifp->if_flags |= IFF_UP; 583 584 switch (ifa->ifa_addr->sa_family) { 585 #ifdef INET 586 case AF_INET: 587 ec_init(ifp); 588 arp_ifinit(ifp, ifa); 589 break; 590 #endif 591 default: 592 ec_init(ifp); 593 break; 594 } 595 break; 596 597 case SIOCSIFFLAGS: 598 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 599 break; 600 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 601 case IFF_RUNNING: 602 /* 603 * If interface is marked down and it is running, then 604 * stop it. 605 */ 606 ifp->if_flags &= ~IFF_RUNNING; 607 break; 608 case IFF_UP: 609 /* 610 * If interface is marked up and it is stopped, then 611 * start it. 612 */ 613 ec_init(ifp); 614 break; 615 default: 616 /* 617 * Some other important flag might have changed, so 618 * reset. 619 */ 620 ec_reset(ifp); 621 break; 622 } 623 break; 624 625 case SIOCGIFMEDIA: 626 case SIOCSIFMEDIA: 627 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 628 break; 629 630 default: 631 error = ether_ioctl(ifp, cmd, data); 632 break; 633 } 634 635 splx(s); 636 return error; 637 } 638 639 /* 640 * Collision routine. 641 */ 642 void 643 ec_coll(struct ec_softc *sc) 644 { 645 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 646 u_short jams; 647 648 if ((++sc->sc_colliding) >= EC_COLLISIONS_JAMMED) { 649 sc->sc_ethercom.ec_if.if_oerrors++; 650 if (!sc->sc_jammed) 651 printf("%s: ethernet jammed\n", 652 device_xname(sc->sc_dev)); 653 sc->sc_jammed = 1; 654 sc->sc_colliding = 0; 655 ifp->if_flags &= ~IFF_OACTIVE; 656 if_schedule_deferred_start(ifp); 657 } else { 658 jams = MAX(sc->sc_colliding, EC_BACKOFF_PRNG_COLL_MAX); 659 sc->sc_backoff_seed = 660 ((sc->sc_backoff_seed * EC_BACKOFF_PRNG_MUL) + 661 EC_BACKOFF_PRNG_ADD) & EC_BACKOFF_PRNG_MASK; 662 bus_space_write_2(sc->sc_iot, sc->sc_ioh, ECREG_BACKOFF, 663 -(((sc->sc_backoff_seed >> 8) & ~(-1 << jams)) + 1)); 664 ECREG_CSR_WR((ECREG_CSR_RD & EC_CSR_INTPA) | 665 EC_CSR_JAM | EC_CSR_TINT | EC_CSR_JINT); 666 } 667 } 668 669 /* 670 * Device timeout routine. 671 */ 672 void 673 ec_watchdog(struct ifnet *ifp) 674 { 675 struct ec_softc *sc = ifp->if_softc; 676 677 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 678 sc->sc_ethercom.ec_if.if_oerrors++; 679 680 ec_reset(ifp); 681 } 682
Indexes created Tue Sep 30 11:09:46 GMT 2025