if_ep.c revision 52549
1/* 2 * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Herb Peyerl. 16 * 4. The name of Herb Peyerl may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * if_ep.c,v 1.19 1995/01/24 20:53:45 davidg Exp 31 */ 32 33/* 34 * Modified from the FreeBSD 1.1.5.1 version by: 35 * Andres Vega Garcia 36 * INRIA - Sophia Antipolis, France 37 * avega@sophia.inria.fr 38 */ 39 40/* 41 * $FreeBSD: head/sys/dev/ep/if_ep.c 52549 1999-10-27 06:25:16Z mdodd $ 42 * 43 * Promiscuous mode added and interrupt logic slightly changed 44 * to reduce the number of adapter failures. Transceiver select 45 * logic changed to use value from EEPROM. Autoconfiguration 46 * features added. 47 * Done by: 48 * Serge Babkin 49 * Chelindbank (Chelyabinsk, Russia) 50 * babkin@hq.icb.chel.su 51 */ 52 53/* 54 * Pccard support for 3C589 by: 55 * HAMADA Naoki 56 * nao@tom-yam.or.jp 57 */ 58 59/* 60 * MAINTAINER: Matthew N. Dodd <winter@jurai.net> 61 * <mdodd@FreeBSD.org> 62 */ 63 64#include <sys/param.h> 65#include <sys/kernel.h> 66#include <sys/systm.h> 67#include <sys/malloc.h> 68#include <sys/mbuf.h> 69#include <sys/socket.h> 70#include <sys/sockio.h> 71 72#include <sys/module.h> 73#include <sys/bus.h> 74 75#include <machine/bus.h> 76#include <machine/resource.h> 77#include <sys/rman.h> 78 79#include <net/if.h> 80#include <net/if_arp.h> 81#include <net/if_media.h> 82#include <net/ethernet.h> 83#include <net/bpf.h> 84 85#include <netinet/in.h> 86#include <netinet/if_ether.h> 87 88#include <machine/clock.h> 89 90#include <dev/ep/if_epreg.h> 91#include <dev/ep/if_epvar.h> 92#include <i386/isa/elink.h> 93 94/* Exported variables */ 95devclass_t ep_devclass; 96 97#if 0 98static char * ep_conn_type[] = {"UTP", "AUI", "???", "BNC"}; 99static int if_media2ep_media[] = { 0, 0, 0, UTP, BNC, AUI }; 100#endif 101 102static int ep_media2if_media[] = 103 { IFM_10_T, IFM_10_5, IFM_NONE, IFM_10_2, IFM_NONE }; 104 105/* if functions */ 106static void ep_if_init __P((void *)); 107static int ep_if_ioctl __P((struct ifnet *, u_long, caddr_t)); 108static void ep_if_start __P((struct ifnet *)); 109static void ep_if_watchdog __P((struct ifnet *)); 110 111/* if_media functions */ 112static int ep_ifmedia_upd __P((struct ifnet *)); 113static void ep_ifmedia_sts __P((struct ifnet *, struct ifmediareq *)); 114 115static void ep_get_macaddr __P((struct ep_softc *, u_char *)); 116static void epstop __P((struct ep_softc *)); 117static void epread __P((struct ep_softc *)); 118static int eeprom_rdy __P((struct ep_softc *)); 119 120#define EP_FTST(sc, f) (sc->stat & (f)) 121#define EP_FSET(sc, f) (sc->stat |= (f)) 122#define EP_FRST(sc, f) (sc->stat &= ~(f)) 123 124static int 125eeprom_rdy(sc) 126 struct ep_softc *sc; 127{ 128 int i; 129 130 for (i = 0; is_eeprom_busy(BASE) && i < MAX_EEPROMBUSY; i++) 131 continue; 132 if (i >= MAX_EEPROMBUSY) { 133 printf("ep%d: eeprom failed to come ready.\n", sc->unit); 134 return (0); 135 } 136 return (1); 137} 138 139/* 140 * get_e: gets a 16 bits word from the EEPROM. we must have set the window 141 * before 142 */ 143u_int16_t 144get_e(sc, offset) 145 struct ep_softc *sc; 146 int offset; 147{ 148 if (!eeprom_rdy(sc)) 149 return (0xffff); 150 outw(BASE + EP_W0_EEPROM_COMMAND, (EEPROM_CMD_RD << sc->epb.cmd_off) | offset); 151 if (!eeprom_rdy(sc)) 152 return (0xffff); 153 return (inw(BASE + EP_W0_EEPROM_DATA)); 154} 155 156static void 157ep_get_macaddr(sc, addr) 158 struct ep_softc * sc; 159 u_char * addr; 160{ 161 int i; 162 u_int16_t * macaddr = (u_int16_t *)addr; 163 164 GO_WINDOW(0); 165 for(i = EEPROM_NODE_ADDR_0; i <= EEPROM_NODE_ADDR_2; i++) { 166 macaddr[i] = htons(get_e(sc, i)); 167 } 168 169 return; 170} 171 172int 173ep_alloc(device_t dev) 174{ 175 struct ep_softc * sc = device_get_softc(dev); 176 int rid; 177 int error = 0; 178 179 rid = 0; 180 sc->iobase = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 181 0, ~0, 1, RF_ACTIVE); 182 if (!sc->iobase) { 183 device_printf(dev, "No I/O space?!\n"); 184 error = ENXIO; 185 goto bad; 186 } 187 188 rid = 0; 189 sc->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 190 0, ~0, 1, RF_ACTIVE); 191 if (!sc->irq) { 192 device_printf(dev, "No irq?!\n"); 193 error = ENXIO; 194 goto bad; 195 } 196 197 sc->dev = dev; 198 sc->unit = device_get_unit(dev); 199 sc->stat = 0; /* 16 bit access */ 200 201 sc->ep_io_addr = rman_get_start(sc->iobase); 202 203 sc->ep_btag = rman_get_bustag(sc->iobase); 204 sc->ep_bhandle = rman_get_bushandle(sc->iobase); 205 206 sc->ep_connectors = 0; 207 sc->ep_connector = 0; 208 209 sc->epb.cmd_off = 0; 210 sc->epb.prod_id = get_e(sc, EEPROM_PROD_ID); 211 sc->epb.res_cfg = get_e(sc, EEPROM_RESOURCE_CFG); 212 213bad: 214 return (error); 215} 216 217void 218ep_get_media(sc) 219 struct ep_softc * sc; 220{ 221 u_int16_t config; 222 223 GO_WINDOW(0); 224 config = inw(BASE + EP_W0_CONFIG_CTRL); 225 if (config & IS_AUI) 226 sc->ep_connectors |= AUI; 227 if (config & IS_BNC) 228 sc->ep_connectors |= BNC; 229 if (config & IS_UTP) 230 sc->ep_connectors |= UTP; 231 232 if (!(sc->ep_connectors & 7)) { 233 if (bootverbose) 234 device_printf(sc->dev, "no connectors!\n"); 235 } 236 237 /* 238 * This works for most of the cards so we'll do it here. 239 * The cards that require something different can override 240 * this later on. 241 */ 242 sc->ep_connector = inw(BASE + EP_W0_ADDRESS_CFG) >> ACF_CONNECTOR_BITS; 243 244 return; 245} 246 247void 248ep_free(device_t dev) 249{ 250 struct ep_softc * sc = device_get_softc(dev); 251 252 if (sc->iobase) 253 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->iobase); 254 if (sc->irq) 255 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq); 256 257 return; 258} 259 260int 261ep_attach(sc) 262 struct ep_softc * sc; 263{ 264 struct ifnet * ifp = NULL; 265 struct ifmedia * ifm = NULL; 266 u_short * p; 267 int i; 268 int attached; 269 270 sc->gone = 0; 271 272 ep_get_macaddr(sc, (u_char *)&sc->arpcom.ac_enaddr); 273 274 /* 275 * Setup the station address 276 */ 277 p = (u_short *)&sc->arpcom.ac_enaddr; 278 GO_WINDOW(2); 279 for (i = 0; i < 3; i++) { 280 outw(BASE + EP_W2_ADDR_0 + (i * 2), ntohs(p[i])); 281 } 282 283 device_printf(sc->dev, "Ethernet address %6D\n", 284 sc->arpcom.ac_enaddr, ":"); 285 286 ifp = &sc->arpcom.ac_if; 287 attached = (ifp->if_softc != 0); 288 289 ifp->if_softc = sc; 290 ifp->if_unit = sc->unit; 291 ifp->if_name = "ep"; 292 ifp->if_mtu = ETHERMTU; 293 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 294 ifp->if_output = ether_output; 295 ifp->if_start = ep_if_start; 296 ifp->if_ioctl = ep_if_ioctl; 297 ifp->if_watchdog = ep_if_watchdog; 298 ifp->if_init = ep_if_init; 299 ifp->if_snd.ifq_maxlen = 8; 300 301 if (!sc->epb.mii_trans) { 302 ifmedia_init(&sc->ifmedia, 0, ep_ifmedia_upd, ep_ifmedia_sts); 303 304 if (sc->ep_connectors & AUI) 305 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_5, 0, NULL); 306 if (sc->ep_connectors & UTP) 307 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL); 308 if (sc->ep_connectors & BNC) 309 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_2, 0, NULL); 310 if (!sc->ep_connectors) 311 ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_NONE, 0, NULL); 312 313 ifmedia_set(&sc->ifmedia, IFM_ETHER|ep_media2if_media[sc->ep_connector]); 314 315 ifm = &sc->ifmedia; 316 ifm->ifm_media = ifm->ifm_cur->ifm_media; 317 ep_ifmedia_upd(ifp); 318 } 319 320 if (!attached) { 321 if_attach(ifp); 322 ether_ifattach(ifp); 323 bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header)); 324 } 325 326#ifdef EP_LOCAL_STATS 327 sc->rx_no_first = sc->rx_no_mbuf = sc->rx_bpf_disc = 328 sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0; 329#endif 330 EP_FSET(sc, F_RX_FIRST); 331 sc->top = sc->mcur = 0; 332 333 return 0; 334} 335 336/* 337 * The order in here seems important. Otherwise we may not receive 338 * interrupts. ?! 339 */ 340static void 341ep_if_init(xsc) 342 void *xsc; 343{ 344 struct ep_softc *sc = xsc; 345 register struct ifnet *ifp = &sc->arpcom.ac_if; 346 int s, i; 347 348 if (sc->gone) 349 return; 350 351 /* 352 if (ifp->if_addrlist == (struct ifaddr *) 0) 353 return; 354 */ 355 356 s = splimp(); 357 while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); 358 359 GO_WINDOW(0); 360 outw(BASE + EP_COMMAND, STOP_TRANSCEIVER); 361 GO_WINDOW(4); 362 outw(BASE + EP_W4_MEDIA_TYPE, DISABLE_UTP); 363 GO_WINDOW(0); 364 365 /* Disable the card */ 366 outw(BASE + EP_W0_CONFIG_CTRL, 0); 367 368 /* Enable the card */ 369 outw(BASE + EP_W0_CONFIG_CTRL, ENABLE_DRQ_IRQ); 370 371 GO_WINDOW(2); 372 373 /* Reload the ether_addr. */ 374 for (i = 0; i < 6; i++) 375 outb(BASE + EP_W2_ADDR_0 + i, sc->arpcom.ac_enaddr[i]); 376 377 outw(BASE + EP_COMMAND, RX_RESET); 378 outw(BASE + EP_COMMAND, TX_RESET); 379 while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); 380 381 /* Window 1 is operating window */ 382 GO_WINDOW(1); 383 for (i = 0; i < 31; i++) 384 inb(BASE + EP_W1_TX_STATUS); 385 386 /* get rid of stray intr's */ 387 outw(BASE + EP_COMMAND, ACK_INTR | 0xff); 388 389 outw(BASE + EP_COMMAND, SET_RD_0_MASK | S_5_INTS); 390 391 outw(BASE + EP_COMMAND, SET_INTR_MASK | S_5_INTS); 392 393 if (ifp->if_flags & IFF_PROMISC) 394 outw(BASE + EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL | 395 FIL_GROUP | FIL_BRDCST | FIL_ALL); 396 else 397 outw(BASE + EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL | 398 FIL_GROUP | FIL_BRDCST); 399 400 ep_ifmedia_upd(ifp); 401 402 outw(BASE + EP_COMMAND, RX_ENABLE); 403 outw(BASE + EP_COMMAND, TX_ENABLE); 404 405 ifp->if_flags |= IFF_RUNNING; 406 ifp->if_flags &= ~IFF_OACTIVE; /* just in case */ 407 408#ifdef EP_LOCAL_STATS 409 sc->rx_no_first = sc->rx_no_mbuf = 410 sc->rx_bpf_disc = sc->rx_overrunf = sc->rx_overrunl = 411 sc->tx_underrun = 0; 412#endif 413 EP_FSET(sc, F_RX_FIRST); 414 if (sc->top) { 415 m_freem(sc->top); 416 sc->top = sc->mcur = 0; 417 } 418 outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); 419 outw(BASE + EP_COMMAND, SET_TX_START_THRESH | 16); 420 421 /* 422 * Store up a bunch of mbuf's for use later. (MAX_MBS). First we free up 423 * any that we had in case we're being called from intr or somewhere 424 * else. 425 */ 426 427 GO_WINDOW(1); 428 ep_if_start(ifp); 429 430 splx(s); 431} 432 433static const char padmap[] = {0, 3, 2, 1}; 434 435static void 436ep_if_start(ifp) 437 struct ifnet *ifp; 438{ 439 register struct ep_softc *sc = ifp->if_softc; 440 register u_int len; 441 register struct mbuf *m; 442 struct mbuf *top; 443 int s, pad; 444 445 if (sc->gone) { 446 return; 447 } 448 449 s = splimp(); 450 while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); 451 if (ifp->if_flags & IFF_OACTIVE) { 452 splx(s); 453 return; 454 } 455startagain: 456 /* Sneak a peek at the next packet */ 457 m = ifp->if_snd.ifq_head; 458 if (m == 0) { 459 splx(s); 460 return; 461 } 462 for (len = 0, top = m; m; m = m->m_next) 463 len += m->m_len; 464 465 pad = padmap[len & 3]; 466 467 /* 468 * The 3c509 automatically pads short packets to minimum ethernet length, 469 * but we drop packets that are too large. Perhaps we should truncate 470 * them instead? 471 */ 472 if (len + pad > ETHER_MAX_LEN) { 473 /* packet is obviously too large: toss it */ 474 ++ifp->if_oerrors; 475 IF_DEQUEUE(&ifp->if_snd, m); 476 m_freem(m); 477 goto readcheck; 478 } 479 if (inw(BASE + EP_W1_FREE_TX) < len + pad + 4) { 480 /* no room in FIFO */ 481 outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | (len + pad + 4)); 482 /* make sure */ 483 if (inw(BASE + EP_W1_FREE_TX) < len + pad + 4) { 484 ifp->if_flags |= IFF_OACTIVE; 485 splx(s); 486 return; 487 } 488 } 489 IF_DEQUEUE(&ifp->if_snd, m); 490 491 outw(BASE + EP_W1_TX_PIO_WR_1, len); 492 outw(BASE + EP_W1_TX_PIO_WR_1, 0x0); /* Second dword meaningless */ 493 494 for (top = m; m != 0; m = m->m_next) 495 if (EP_FTST(sc, F_ACCESS_32_BITS)) { 496 outsl(BASE + EP_W1_TX_PIO_WR_1, mtod(m, caddr_t), 497 m->m_len / 4); 498 if (m->m_len & 3) 499 outsb(BASE + EP_W1_TX_PIO_WR_1, 500 mtod(m, caddr_t) + (m->m_len & (~3)), 501 m->m_len & 3); 502 } else { 503 outsw(BASE + EP_W1_TX_PIO_WR_1, mtod(m, caddr_t), m->m_len / 2); 504 if (m->m_len & 1) 505 outb(BASE + EP_W1_TX_PIO_WR_1, 506 *(mtod(m, caddr_t) + m->m_len - 1)); 507 } 508 509 while (pad--) 510 outb(BASE + EP_W1_TX_PIO_WR_1, 0); /* Padding */ 511 512 if (ifp->if_bpf) { 513 bpf_mtap(ifp, top); 514 } 515 516 ifp->if_timer = 2; 517 ifp->if_opackets++; 518 m_freem(top); 519 520 /* 521 * Is another packet coming in? We don't want to overflow the tiny RX 522 * fifo. 523 */ 524readcheck: 525 if (inw(BASE + EP_W1_RX_STATUS) & RX_BYTES_MASK) { 526 /* 527 * we check if we have packets left, in that case we prepare to come 528 * back later 529 */ 530 if (ifp->if_snd.ifq_head) { 531 outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | 8); 532 } 533 splx(s); 534 return; 535 } 536 goto startagain; 537} 538 539void 540ep_intr(arg) 541 void *arg; 542{ 543 struct ep_softc *sc; 544 register int status; 545 struct ifnet *ifp; 546 int x; 547 548 x = splbio(); 549 550 sc = (struct ep_softc *)arg; 551 552 if (sc->gone) 553 return; 554 555 ifp = &sc->arpcom.ac_if; 556 557 outw(BASE + EP_COMMAND, SET_INTR_MASK); /* disable all Ints */ 558 559rescan: 560 561 while ((status = inw(BASE + EP_STATUS)) & S_5_INTS) { 562 563 /* first acknowledge all interrupt sources */ 564 outw(BASE + EP_COMMAND, ACK_INTR | (status & S_MASK)); 565 566 if (status & (S_RX_COMPLETE | S_RX_EARLY)) { 567 epread(sc); 568 continue; 569 } 570 if (status & S_TX_AVAIL) { 571 /* we need ACK */ 572 ifp->if_timer = 0; 573 ifp->if_flags &= ~IFF_OACTIVE; 574 GO_WINDOW(1); 575 inw(BASE + EP_W1_FREE_TX); 576 ep_if_start(ifp); 577 } 578 if (status & S_CARD_FAILURE) { 579 ifp->if_timer = 0; 580#ifdef EP_LOCAL_STATS 581 printf("\nep%d:\n\tStatus: %x\n", sc->unit, status); 582 GO_WINDOW(4); 583 printf("\tFIFO Diagnostic: %x\n", inw(BASE + EP_W4_FIFO_DIAG)); 584 printf("\tStat: %x\n", sc->stat); 585 printf("\tIpackets=%d, Opackets=%d\n", 586 ifp->if_ipackets, ifp->if_opackets); 587 printf("\tNOF=%d, NOMB=%d, BPFD=%d, RXOF=%d, RXOL=%d, TXU=%d\n", 588 sc->rx_no_first, sc->rx_no_mbuf, sc->rx_bpf_disc, sc->rx_overrunf, 589 sc->rx_overrunl, sc->tx_underrun); 590#else 591 592#ifdef DIAGNOSTIC 593 printf("ep%d: Status: %x (input buffer overflow)\n", sc->unit, status); 594#else 595 ++ifp->if_ierrors; 596#endif 597 598#endif 599 ep_if_init(sc); 600 splx(x); 601 return; 602 } 603 if (status & S_TX_COMPLETE) { 604 ifp->if_timer = 0; 605 /* we need ACK. we do it at the end */ 606 /* 607 * We need to read TX_STATUS until we get a 0 status in order to 608 * turn off the interrupt flag. 609 */ 610 while ((status = inb(BASE + EP_W1_TX_STATUS)) & TXS_COMPLETE) { 611 if (status & TXS_SUCCES_INTR_REQ); 612 else if (status & (TXS_UNDERRUN | TXS_JABBER | TXS_MAX_COLLISION)) { 613 outw(BASE + EP_COMMAND, TX_RESET); 614 if (status & TXS_UNDERRUN) { 615#ifdef EP_LOCAL_STATS 616 sc->tx_underrun++; 617#endif 618 } else { 619 if (status & TXS_JABBER); 620 else /* TXS_MAX_COLLISION - we shouldn't get here */ 621 ++ifp->if_collisions; 622 } 623 ++ifp->if_oerrors; 624 outw(BASE + EP_COMMAND, TX_ENABLE); 625 /* 626 * To have a tx_avail_int but giving the chance to the 627 * Reception 628 */ 629 if (ifp->if_snd.ifq_head) { 630 outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | 8); 631 } 632 } 633 outb(BASE + EP_W1_TX_STATUS, 0x0); /* pops up the next 634 * status */ 635 } /* while */ 636 ifp->if_flags &= ~IFF_OACTIVE; 637 GO_WINDOW(1); 638 inw(BASE + EP_W1_FREE_TX); 639 ep_if_start(ifp); 640 } /* end TX_COMPLETE */ 641 } 642 643 outw(BASE + EP_COMMAND, C_INTR_LATCH); /* ACK int Latch */ 644 645 if ((status = inw(BASE + EP_STATUS)) & S_5_INTS) 646 goto rescan; 647 648 /* re-enable Ints */ 649 outw(BASE + EP_COMMAND, SET_INTR_MASK | S_5_INTS); 650 651 splx(x); 652} 653 654static void 655epread(sc) 656 register struct ep_softc *sc; 657{ 658 struct ether_header *eh; 659 struct mbuf *top, *mcur, *m; 660 struct ifnet *ifp; 661 int lenthisone; 662 663 short rx_fifo2, status; 664 register short rx_fifo; 665 666 ifp = &sc->arpcom.ac_if; 667 status = inw(BASE + EP_W1_RX_STATUS); 668 669read_again: 670 671 if (status & ERR_RX) { 672 ++ifp->if_ierrors; 673 if (status & ERR_RX_OVERRUN) { 674 /* 675 * we can think the rx latency is actually greather than we 676 * expect 677 */ 678#ifdef EP_LOCAL_STATS 679 if (EP_FTST(sc, F_RX_FIRST)) 680 sc->rx_overrunf++; 681 else 682 sc->rx_overrunl++; 683#endif 684 } 685 goto out; 686 } 687 rx_fifo = rx_fifo2 = status & RX_BYTES_MASK; 688 689 if (EP_FTST(sc, F_RX_FIRST)) { 690 MGETHDR(m, M_DONTWAIT, MT_DATA); 691 if (!m) 692 goto out; 693 if (rx_fifo >= MINCLSIZE) 694 MCLGET(m, M_DONTWAIT); 695 sc->top = sc->mcur = top = m; 696#define EROUND ((sizeof(struct ether_header) + 3) & ~3) 697#define EOFF (EROUND - sizeof(struct ether_header)) 698 top->m_data += EOFF; 699 700 /* Read what should be the header. */ 701 insw(BASE + EP_W1_RX_PIO_RD_1, 702 mtod(top, caddr_t), sizeof(struct ether_header) / 2); 703 top->m_len = sizeof(struct ether_header); 704 rx_fifo -= sizeof(struct ether_header); 705 sc->cur_len = rx_fifo2; 706 } else { 707 /* come here if we didn't have a complete packet last time */ 708 top = sc->top; 709 m = sc->mcur; 710 sc->cur_len += rx_fifo2; 711 } 712 713 /* Reads what is left in the RX FIFO */ 714 while (rx_fifo > 0) { 715 lenthisone = min(rx_fifo, M_TRAILINGSPACE(m)); 716 if (lenthisone == 0) { /* no room in this one */ 717 mcur = m; 718 MGET(m, M_DONTWAIT, MT_DATA); 719 if (!m) 720 goto out; 721 if (rx_fifo >= MINCLSIZE) 722 MCLGET(m, M_DONTWAIT); 723 m->m_len = 0; 724 mcur->m_next = m; 725 lenthisone = min(rx_fifo, M_TRAILINGSPACE(m)); 726 } 727 if (EP_FTST(sc, F_ACCESS_32_BITS)) { /* default for EISA configured cards*/ 728 insl(BASE + EP_W1_RX_PIO_RD_1, mtod(m, caddr_t) + m->m_len, 729 lenthisone / 4); 730 m->m_len += (lenthisone & ~3); 731 if (lenthisone & 3) 732 insb(BASE + EP_W1_RX_PIO_RD_1, 733 mtod(m, caddr_t) + m->m_len, 734 lenthisone & 3); 735 m->m_len += (lenthisone & 3); 736 } else { 737 insw(BASE + EP_W1_RX_PIO_RD_1, mtod(m, caddr_t) + m->m_len, 738 lenthisone / 2); 739 m->m_len += lenthisone; 740 if (lenthisone & 1) 741 *(mtod(m, caddr_t) + m->m_len - 1) = inb(BASE + EP_W1_RX_PIO_RD_1); 742 } 743 rx_fifo -= lenthisone; 744 } 745 746 if (status & ERR_RX_INCOMPLETE) { /* we haven't received the complete 747 * packet */ 748 sc->mcur = m; 749#ifdef EP_LOCAL_STATS 750 sc->rx_no_first++; /* to know how often we come here */ 751#endif 752 EP_FRST(sc, F_RX_FIRST); 753 if (!((status = inw(BASE + EP_W1_RX_STATUS)) & ERR_RX_INCOMPLETE)) { 754 /* we see if by now, the packet has completly arrived */ 755 goto read_again; 756 } 757 outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_NEXT_EARLY_THRESH); 758 return; 759 } 760 outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK); 761 ++ifp->if_ipackets; 762 EP_FSET(sc, F_RX_FIRST); 763 top->m_pkthdr.rcvif = &sc->arpcom.ac_if; 764 top->m_pkthdr.len = sc->cur_len; 765 766 if (ifp->if_bpf) { 767 bpf_mtap(ifp, top); 768 769 /* 770 * Note that the interface cannot be in promiscuous mode if there are 771 * no BPF listeners. And if we are in promiscuous mode, we have to 772 * check if this packet is really ours. 773 */ 774 eh = mtod(top, struct ether_header *); 775 if ((ifp->if_flags & IFF_PROMISC) && 776 (eh->ether_dhost[0] & 1) == 0 && 777 bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, 778 sizeof(eh->ether_dhost)) != 0 && 779 bcmp(eh->ether_dhost, etherbroadcastaddr, 780 sizeof(eh->ether_dhost)) != 0) { 781 if (sc->top) { 782 m_freem(sc->top); 783 sc->top = 0; 784 } 785 EP_FSET(sc, F_RX_FIRST); 786#ifdef EP_LOCAL_STATS 787 sc->rx_bpf_disc++; 788#endif 789 while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); 790 outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); 791 return; 792 } 793 } 794 795 eh = mtod(top, struct ether_header *); 796 m_adj(top, sizeof(struct ether_header)); 797 ether_input(ifp, eh, top); 798 sc->top = 0; 799 while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); 800 outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); 801 return; 802 803out: 804 outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK); 805 if (sc->top) { 806 m_freem(sc->top); 807 sc->top = 0; 808#ifdef EP_LOCAL_STATS 809 sc->rx_no_mbuf++; 810#endif 811 } 812 EP_FSET(sc, F_RX_FIRST); 813 while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); 814 outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); 815} 816 817static int 818ep_ifmedia_upd(ifp) 819 struct ifnet * ifp; 820{ 821 struct ep_softc * sc = ifp->if_softc; 822 int i = 0, j; 823 824 GO_WINDOW(0); 825 outw(BASE + EP_COMMAND, STOP_TRANSCEIVER); 826 GO_WINDOW(4); 827 outw(BASE + EP_W4_MEDIA_TYPE, DISABLE_UTP); 828 GO_WINDOW(0); 829 830 switch (IFM_SUBTYPE(sc->ifmedia.ifm_media)) { 831 case IFM_10_T: 832 if (sc->ep_connectors & UTP) { 833 i = ACF_CONNECTOR_UTP; 834 GO_WINDOW(4); 835 outw(BASE + EP_W4_MEDIA_TYPE, ENABLE_UTP); 836 } 837 break; 838 case IFM_10_2: 839 if (sc->ep_connectors & BNC) { 840 i = ACF_CONNECTOR_BNC; 841 outw(BASE + EP_COMMAND, START_TRANSCEIVER); 842 DELAY(DELAY_MULTIPLE * 1000); 843 } 844 break; 845 case IFM_10_5: 846 if (sc->ep_connectors & AUI) 847 i = ACF_CONNECTOR_AUI; 848 break; 849 default: 850 i = sc->ep_connector; 851 device_printf(sc->dev, 852 "strange connector type in EEPROM: assuming AUI\n"); 853 } 854 855 GO_WINDOW(0); 856 j = inw(BASE + EP_W0_ADDRESS_CFG) & 0x3fff; 857 outw(BASE + EP_W0_ADDRESS_CFG, j | (i << ACF_CONNECTOR_BITS)); 858 859 return (0); 860} 861 862static void 863ep_ifmedia_sts(ifp, ifmr) 864 struct ifnet * ifp; 865 struct ifmediareq * ifmr; 866{ 867 struct ep_softc * sc = ifp->if_softc; 868 869 ifmr->ifm_active = sc->ifmedia.ifm_media; 870 871 return; 872} 873 874static int 875ep_if_ioctl(ifp, cmd, data) 876 struct ifnet * ifp; 877 u_long cmd; 878 caddr_t data; 879{ 880 struct ep_softc * sc = ifp->if_softc; 881 struct ifreq * ifr = (struct ifreq *)data; 882 int s, error = 0; 883 884 s = splimp(); 885 886 switch (cmd) { 887 case SIOCSIFADDR: 888 case SIOCGIFADDR: 889 case SIOCSIFMTU: 890 error = ether_ioctl(ifp, cmd, data); 891 break; 892 893 case SIOCSIFFLAGS: 894 if (((ifp->if_flags & IFF_UP) == 0) && 895 (ifp->if_flags & IFF_RUNNING)) { 896 ifp->if_flags &= ~IFF_RUNNING; 897 epstop(sc); 898 } else { 899 /* reinitialize card on any parameter change */ 900 ep_if_init(sc); 901 } 902 break; 903#ifdef notdef 904 case SIOCGHWADDR: 905 bcopy((caddr_t) sc->sc_addr, (caddr_t) & ifr->ifr_data, 906 sizeof(sc->sc_addr)); 907 break; 908#endif 909 case SIOCADDMULTI: 910 case SIOCDELMULTI: 911 /* 912 * The Etherlink III has no programmable multicast 913 * filter. We always initialize the card to be 914 * promiscuous to multicast, since we're always a 915 * member of the ALL-SYSTEMS group, so there's no 916 * need to process SIOC*MULTI requests. 917 */ 918 error = 0; 919 break; 920 case SIOCSIFMEDIA: 921 case SIOCGIFMEDIA: 922 error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, cmd); 923 break; 924 default: 925 error = EINVAL; 926 break; 927 } 928 929 (void)splx(s); 930 931 return (error); 932} 933 934static void 935ep_if_watchdog(ifp) 936 struct ifnet *ifp; 937{ 938 struct ep_softc *sc = ifp->if_softc; 939 940 /* 941 printf("ep: watchdog\n"); 942 943 log(LOG_ERR, "ep%d: watchdog\n", ifp->if_unit); 944 ifp->if_oerrors++; 945 */ 946 947 if (sc->gone) { 948 return; 949 } 950 951 ifp->if_flags &= ~IFF_OACTIVE; 952 ep_if_start(ifp); 953 ep_intr(ifp->if_softc); 954} 955 956static void 957epstop(sc) 958 struct ep_softc *sc; 959{ 960 if (sc->gone) { 961 return; 962 } 963 964 outw(BASE + EP_COMMAND, RX_DISABLE); 965 outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK); 966 while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); 967 outw(BASE + EP_COMMAND, TX_DISABLE); 968 outw(BASE + EP_COMMAND, STOP_TRANSCEIVER); 969 outw(BASE + EP_COMMAND, RX_RESET); 970 outw(BASE + EP_COMMAND, TX_RESET); 971 while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS); 972 outw(BASE + EP_COMMAND, C_INTR_LATCH); 973 outw(BASE + EP_COMMAND, SET_RD_0_MASK); 974 outw(BASE + EP_COMMAND, SET_INTR_MASK); 975 outw(BASE + EP_COMMAND, SET_RX_FILTER); 976} 977