if_ep.c revision 121816
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 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD: head/sys/dev/ep/if_ep.c 121816 2003-10-31 18:32:15Z brooks $"); 33 34/* 35 * Modified from the FreeBSD 1.1.5.1 version by: 36 * Andres Vega Garcia 37 * INRIA - Sophia Antipolis, France 38 * avega@sophia.inria.fr 39 */ 40 41/* 42 * Promiscuous mode added and interrupt logic slightly changed 43 * to reduce the number of adapter failures. Transceiver select 44 * logic changed to use value from EEPROM. Autoconfiguration 45 * features added. 46 * Done by: 47 * Serge Babkin 48 * Chelindbank (Chelyabinsk, Russia) 49 * babkin@hq.icb.chel.su 50 */ 51 52/* 53 * Pccard support for 3C589 by: 54 * HAMADA Naoki 55 * nao@tom-yam.or.jp 56 */ 57 58/* 59 * MAINTAINER: Matthew N. Dodd <winter@jurai.net> 60 * <mdodd@FreeBSD.org> 61 */ 62 63#include <sys/cdefs.h> 64__FBSDID("$FreeBSD: head/sys/dev/ep/if_ep.c 121816 2003-10-31 18:32:15Z brooks $"); 65 66#include <sys/param.h> 67#include <sys/systm.h> 68#include <sys/mbuf.h> 69#include <sys/socket.h> 70#include <sys/sockio.h> 71#include <sys/bus.h> 72 73#include <machine/bus.h> 74#include <machine/resource.h> 75#include <sys/rman.h> 76 77#include <net/if.h> 78#include <net/if_arp.h> 79#include <net/if_media.h> 80#include <net/ethernet.h> 81#include <net/bpf.h> 82 83#include <dev/ep/if_epreg.h> 84#include <dev/ep/if_epvar.h> 85 86/* Exported variables */ 87devclass_t ep_devclass; 88 89static int ep_media2if_media[] = 90{IFM_10_T, IFM_10_5, IFM_NONE, IFM_10_2, IFM_NONE}; 91 92/* if functions */ 93static void epinit(void *); 94static int epioctl(struct ifnet *, u_long, caddr_t); 95static void epstart(struct ifnet *); 96static void epwatchdog(struct ifnet *); 97 98static void epstart_locked(struct ifnet *); 99static void epinit_locked(struct ep_softc *); 100 101/* if_media functions */ 102static int ep_ifmedia_upd(struct ifnet *); 103static void ep_ifmedia_sts(struct ifnet *, struct ifmediareq *); 104 105static void epstop(struct ep_softc *); 106static void epread(struct ep_softc *); 107static int eeprom_rdy(struct ep_softc *); 108 109#define EP_FTST(sc, f) (sc->stat & (f)) 110#define EP_FSET(sc, f) (sc->stat |= (f)) 111#define EP_FRST(sc, f) (sc->stat &= ~(f)) 112 113static int 114eeprom_rdy(struct ep_softc *sc) 115{ 116 int i; 117 118 for (i = 0; is_eeprom_busy(sc) && i < MAX_EEPROMBUSY; i++) 119 DELAY(100); 120 121 if (i >= MAX_EEPROMBUSY) { 122 printf("ep%d: eeprom failed to come ready.\n", sc->unit); 123 return (ENXIO); 124 } 125 126 return (0); 127} 128 129/* 130 * get_e: gets a 16 bits word from the EEPROM. we must have set the window 131 * before 132 */ 133int 134get_e(struct ep_softc *sc, u_int16_t offset, u_int16_t *result) 135{ 136 137 if (eeprom_rdy(sc)) 138 return (ENXIO); 139 140 CSR_WRITE_2(sc, EP_W0_EEPROM_COMMAND, 141 (EEPROM_CMD_RD << sc->epb.cmd_off) | offset); 142 143 if (eeprom_rdy(sc)) 144 return (ENXIO); 145 146 (*result) = CSR_READ_2(sc, EP_W0_EEPROM_DATA); 147 148 return (0); 149} 150 151int 152ep_get_macaddr(struct ep_softc *sc, u_char *addr) 153{ 154 int i; 155 u_int16_t result; 156 int error; 157 u_int16_t *macaddr; 158 159 macaddr = (u_int16_t *) addr; 160 161 GO_WINDOW(sc, 0); 162 for (i = EEPROM_NODE_ADDR_0; i <= EEPROM_NODE_ADDR_2; i++) { 163 error = get_e(sc, i, &result); 164 if (error) 165 return (error); 166 macaddr[i] = htons(result); 167 } 168 169 return (0); 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 u_int16_t result; 179 180 rid = 0; 181 sc->iobase = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 182 0, ~0, 1, RF_ACTIVE); 183 if (!sc->iobase) { 184 device_printf(dev, "No I/O space?!\n"); 185 error = ENXIO; 186 goto bad; 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 sc->dev = dev; 197 sc->unit = device_get_unit(dev); 198 sc->stat = 0; /* 16 bit access */ 199 200 sc->bst = rman_get_bustag(sc->iobase); 201 sc->bsh = rman_get_bushandle(sc->iobase); 202 203 sc->ep_connectors = 0; 204 sc->ep_connector = 0; 205 206 GO_WINDOW(sc, 0); 207 sc->epb.cmd_off = 0; 208 209 error = get_e(sc, EEPROM_PROD_ID, &result); 210 if (error) 211 goto bad; 212 sc->epb.prod_id = result; 213 214 error = get_e(sc, EEPROM_RESOURCE_CFG, &result); 215 if (error) 216 goto bad; 217 sc->epb.res_cfg = result; 218 219bad: 220 return (error); 221} 222 223void 224ep_get_media(struct ep_softc *sc) 225{ 226 u_int16_t config; 227 228 GO_WINDOW(sc, 0); 229 config = CSR_READ_2(sc, EP_W0_CONFIG_CTRL); 230 if (config & IS_AUI) 231 sc->ep_connectors |= AUI; 232 if (config & IS_BNC) 233 sc->ep_connectors |= BNC; 234 if (config & IS_UTP) 235 sc->ep_connectors |= UTP; 236 237 if (!(sc->ep_connectors & 7)) 238 if (bootverbose) 239 device_printf(sc->dev, "no connectors!\n"); 240 241 /* 242 * This works for most of the cards so we'll do it here. 243 * The cards that require something different can override 244 * this later on. 245 */ 246 sc->ep_connector = CSR_READ_2(sc, EP_W0_ADDRESS_CFG) >> ACF_CONNECTOR_BITS; 247} 248 249void 250ep_free(device_t dev) 251{ 252 struct ep_softc *sc = device_get_softc(dev); 253 254 if (sc->ep_intrhand) 255 bus_teardown_intr(dev, sc->irq, sc->ep_intrhand); 256 if (sc->iobase) 257 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->iobase); 258 if (sc->irq) 259 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq); 260} 261 262int 263ep_attach(struct ep_softc *sc) 264{ 265 struct ifnet *ifp = NULL; 266 struct ifmedia *ifm = NULL; 267 u_short *p; 268 int i; 269 int attached; 270 int error; 271 272 sc->gone = 0; 273 EP_LOCK_INIT(sc); 274 error = ep_get_macaddr(sc, (u_char *)&sc->arpcom.ac_enaddr); 275 if (error) { 276 device_printf(sc->dev, "Unable to get Ethernet address!\n"); 277 EP_LOCK_DESTORY(sc); 278 return (ENXIO); 279 } 280 /* 281 * Setup the station address 282 */ 283 p = (u_short *)&sc->arpcom.ac_enaddr; 284 GO_WINDOW(sc, 2); 285 for (i = 0; i < 3; i++) 286 CSR_WRITE_2(sc, EP_W2_ADDR_0 + (i * 2), ntohs(p[i])); 287 288 device_printf(sc->dev, "Ethernet address %6D\n", 289 sc->arpcom.ac_enaddr, ":"); 290 291 ifp = &sc->arpcom.ac_if; 292 attached = (ifp->if_softc != 0); 293 294 ifp->if_softc = sc; 295 if_initname(ifp, device_get_name(sc->dev), device_get_unit(sc->dev)); 296 ifp->if_mtu = ETHERMTU; 297 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 298 ifp->if_output = ether_output; 299 ifp->if_start = epstart; 300 ifp->if_ioctl = epioctl; 301 ifp->if_watchdog = epwatchdog; 302 ifp->if_init = epinit; 303 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 304 305 if (!sc->epb.mii_trans) { 306 ifmedia_init(&sc->ifmedia, 0, ep_ifmedia_upd, ep_ifmedia_sts); 307 308 if (sc->ep_connectors & AUI) 309 ifmedia_add(&sc->ifmedia, 310 IFM_ETHER | IFM_10_5, 0, NULL); 311 if (sc->ep_connectors & UTP) 312 ifmedia_add(&sc->ifmedia, 313 IFM_ETHER | IFM_10_T, 0, NULL); 314 if (sc->ep_connectors & BNC) 315 ifmedia_add(&sc->ifmedia, 316 IFM_ETHER | IFM_10_2, 0, NULL); 317 if (!sc->ep_connectors) 318 ifmedia_add(&sc->ifmedia, 319 IFM_ETHER | IFM_NONE, 0, NULL); 320 321 ifmedia_set(&sc->ifmedia, 322 IFM_ETHER | ep_media2if_media[sc->ep_connector]); 323 324 ifm = &sc->ifmedia; 325 ifm->ifm_media = ifm->ifm_cur->ifm_media; 326 ep_ifmedia_upd(ifp); 327 } 328 if (!attached) 329 ether_ifattach(ifp, sc->arpcom.ac_enaddr); 330 331#ifdef EP_LOCAL_STATS 332 sc->rx_no_first = sc->rx_no_mbuf = sc->rx_bpf_disc = 333 sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0; 334#endif 335 EP_FSET(sc, F_RX_FIRST); 336 sc->top = sc->mcur = 0; 337 338 epstop(sc); 339 340 return (0); 341} 342 343int 344ep_detach(device_t dev) 345{ 346 struct ep_softc *sc; 347 struct ifnet *ifp; 348 349 sc = device_get_softc(dev); 350 EP_ASSERT_UNLOCKED(sc); 351 ifp = &sc->arpcom.ac_if; 352 353 if (sc->gone) { 354 device_printf(dev, "already unloaded\n"); 355 return (0); 356 } 357 if (bus_child_present(dev)) 358 epstop(sc); 359 360 ifp->if_flags &= ~IFF_RUNNING; 361 ether_ifdetach(ifp); 362 363 sc->gone = 1; 364 ep_free(dev); 365 EP_LOCK_DESTORY(sc); 366 367 return (0); 368} 369 370static void 371epinit(void *xsc) 372{ 373 struct ep_softc *sc = xsc; 374 EP_LOCK(sc); 375 epinit_locked(sc); 376 EP_UNLOCK(sc); 377} 378 379/* 380 * The order in here seems important. Otherwise we may not receive 381 * interrupts. ?! 382 */ 383static void 384epinit_locked(struct ep_softc *sc) 385{ 386 struct ifnet *ifp = &sc->arpcom.ac_if; 387 int i; 388 389 if (sc->gone) 390 return; 391 392 EP_ASSERT_LOCKED(sc); 393 EP_BUSY_WAIT(sc); 394 395 GO_WINDOW(sc, 0); 396 CSR_WRITE_2(sc, EP_COMMAND, STOP_TRANSCEIVER); 397 GO_WINDOW(sc, 4); 398 CSR_WRITE_2(sc, EP_W4_MEDIA_TYPE, DISABLE_UTP); 399 GO_WINDOW(sc, 0); 400 401 /* Disable the card */ 402 CSR_WRITE_2(sc, EP_W0_CONFIG_CTRL, 0); 403 404 /* Enable the card */ 405 CSR_WRITE_2(sc, EP_W0_CONFIG_CTRL, ENABLE_DRQ_IRQ); 406 407 GO_WINDOW(sc, 2); 408 409 /* Reload the ether_addr. */ 410 for (i = 0; i < 6; i++) 411 CSR_WRITE_1(sc, EP_W2_ADDR_0 + i, sc->arpcom.ac_enaddr[i]); 412 413 CSR_WRITE_2(sc, EP_COMMAND, RX_RESET); 414 CSR_WRITE_2(sc, EP_COMMAND, TX_RESET); 415 EP_BUSY_WAIT(sc); 416 417 /* Window 1 is operating window */ 418 GO_WINDOW(sc, 1); 419 for (i = 0; i < 31; i++) 420 CSR_READ_1(sc, EP_W1_TX_STATUS); 421 422 /* get rid of stray intr's */ 423 CSR_WRITE_2(sc, EP_COMMAND, ACK_INTR | 0xff); 424 425 CSR_WRITE_2(sc, EP_COMMAND, SET_RD_0_MASK | S_5_INTS); 426 427 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK | S_5_INTS); 428 429 if (ifp->if_flags & IFF_PROMISC) 430 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL | 431 FIL_MULTICAST | FIL_BRDCST | FIL_PROMISC); 432 else 433 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL | 434 FIL_MULTICAST | FIL_BRDCST); 435 436 if (!sc->epb.mii_trans) 437 ep_ifmedia_upd(ifp); 438 439 CSR_WRITE_2(sc, EP_COMMAND, RX_ENABLE); 440 CSR_WRITE_2(sc, EP_COMMAND, TX_ENABLE); 441 442 ifp->if_flags |= IFF_RUNNING; 443 ifp->if_flags &= ~IFF_OACTIVE; /* just in case */ 444 445#ifdef EP_LOCAL_STATS 446 sc->rx_no_first = sc->rx_no_mbuf = 447 sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0; 448#endif 449 EP_FSET(sc, F_RX_FIRST); 450 if (sc->top) { 451 m_freem(sc->top); 452 sc->top = sc->mcur = 0; 453 } 454 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); 455 CSR_WRITE_2(sc, EP_COMMAND, SET_TX_START_THRESH | 16); 456 457 /* 458 * Store up a bunch of mbuf's for use later. (MAX_MBS). 459 * First we free up any that we had in case we're being 460 * called from intr or somewhere else. 461 */ 462 463 GO_WINDOW(sc, 1); 464 epstart_locked(ifp); 465} 466 467static void 468epstart(struct ifnet *ifp) 469{ 470 struct ep_softc *sc; 471 sc = ifp->if_softc; 472 EP_LOCK(sc); 473 epstart_locked(ifp); 474 EP_UNLOCK(sc); 475} 476 477static void 478epstart_locked(struct ifnet *ifp) 479{ 480 struct ep_softc *sc; 481 u_int len; 482 struct mbuf *m, *m0; 483 int pad; 484 485 sc = ifp->if_softc; 486 if (sc->gone) 487 return; 488 EP_ASSERT_LOCKED(sc); 489 EP_BUSY_WAIT(sc); 490 if (ifp->if_flags & IFF_OACTIVE) 491 return; 492startagain: 493 /* Sneak a peek at the next packet */ 494 IF_DEQUEUE(&ifp->if_snd, m0); 495 if (m0 == NULL) 496 return; 497 for (len = 0, m = m0; m != NULL; m = m->m_next) 498 len += m->m_len; 499 500 pad = (4 - len) & 3; 501 502 /* 503 * The 3c509 automatically pads short packets to minimum 504 * ethernet length, but we drop packets that are too large. 505 * Perhaps we should truncate them instead? 506 */ 507 if (len + pad > ETHER_MAX_LEN) { 508 /* packet is obviously too large: toss it */ 509 ifp->if_oerrors++; 510 m_freem(m0); 511 goto readcheck; 512 } 513 if (CSR_READ_2(sc, EP_W1_FREE_TX) < len + pad + 4) { 514 /* no room in FIFO */ 515 CSR_WRITE_2(sc, EP_COMMAND, SET_TX_AVAIL_THRESH | (len + pad + 4)); 516 /* make sure */ 517 if (CSR_READ_2(sc, EP_W1_FREE_TX) < len + pad + 4) { 518 ifp->if_flags |= IFF_OACTIVE; 519 IF_PREPEND(&ifp->if_snd, m0); 520 goto done; 521 } 522 } else 523 CSR_WRITE_2(sc, EP_COMMAND, 524 SET_TX_AVAIL_THRESH | EP_THRESH_DISABLE); 525 526 /* XXX 4.x and earlier would splhigh here */ 527 528 CSR_WRITE_2(sc, EP_W1_TX_PIO_WR_1, len); 529 /* Second dword meaningless */ 530 CSR_WRITE_2(sc, EP_W1_TX_PIO_WR_1, 0x0); 531 532 if (EP_FTST(sc, F_ACCESS_32_BITS)) { 533 for (m = m0; m != NULL; m = m->m_next) { 534 if (m->m_len > 3) 535 CSR_WRITE_MULTI_4(sc, EP_W1_TX_PIO_WR_1, 536 mtod(m, uint32_t *), m->m_len / 4); 537 if (m->m_len & 3) 538 CSR_WRITE_MULTI_1(sc, EP_W1_TX_PIO_WR_1, 539 mtod(m, uint8_t *)+(m->m_len & (~3)), 540 m->m_len & 3); 541 } 542 } else { 543 for (m = m0; m != NULL; m = m->m_next) { 544 if (m->m_len > 1) 545 CSR_WRITE_MULTI_2(sc, EP_W1_TX_PIO_WR_1, 546 mtod(m, uint16_t *), m->m_len / 2); 547 if (m->m_len & 1) 548 CSR_WRITE_1(sc, EP_W1_TX_PIO_WR_1, 549 *(mtod(m, uint8_t *)+m->m_len - 1)); 550 } 551 } 552 553 while (pad--) 554 CSR_WRITE_1(sc, EP_W1_TX_PIO_WR_1, 0); /* Padding */ 555 556 /* XXX and drop splhigh here */ 557 558 BPF_MTAP(ifp, m0); 559 560 ifp->if_timer = 2; 561 ifp->if_opackets++; 562 m_freem(m0); 563 564 /* 565 * Is another packet coming in? We don't want to overflow 566 * the tiny RX fifo. 567 */ 568readcheck: 569 if (CSR_READ_2(sc, EP_W1_RX_STATUS) & RX_BYTES_MASK) { 570 /* 571 * we check if we have packets left, in that case 572 * we prepare to come back later 573 */ 574 if (ifp->if_snd.ifq_head) 575 CSR_WRITE_2(sc, EP_COMMAND, SET_TX_AVAIL_THRESH | 8); 576 goto done; 577 } 578 goto startagain; 579done:; 580 return; 581} 582 583void 584ep_intr(void *arg) 585{ 586 struct ep_softc *sc; 587 int status; 588 struct ifnet *ifp; 589 590 sc = (struct ep_softc *) arg; 591 EP_LOCK(sc); 592 /* XXX 4.x splbio'd here to reduce interruptability */ 593 594 /* 595 * quick fix: Try to detect an interrupt when the card goes away. 596 */ 597 if (sc->gone || CSR_READ_2(sc, EP_STATUS) == 0xffff) { 598 EP_UNLOCK(sc); 599 return; 600 } 601 ifp = &sc->arpcom.ac_if; 602 603 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK); /* disable all Ints */ 604 605rescan: 606 607 while ((status = CSR_READ_2(sc, EP_STATUS)) & S_5_INTS) { 608 609 /* first acknowledge all interrupt sources */ 610 CSR_WRITE_2(sc, EP_COMMAND, ACK_INTR | (status & S_MASK)); 611 612 if (status & (S_RX_COMPLETE | S_RX_EARLY)) 613 epread(sc); 614 if (status & S_TX_AVAIL) { 615 /* we need ACK */ 616 ifp->if_timer = 0; 617 ifp->if_flags &= ~IFF_OACTIVE; 618 GO_WINDOW(sc, 1); 619 CSR_READ_2(sc, EP_W1_FREE_TX); 620 epstart_locked(ifp); 621 } 622 if (status & S_CARD_FAILURE) { 623 ifp->if_timer = 0; 624#ifdef EP_LOCAL_STATS 625 printf("\nep%d:\n\tStatus: %x\n", sc->unit, status); 626 GO_WINDOW(sc, 4); 627 printf("\tFIFO Diagnostic: %x\n", 628 CSR_READ_2(sc, EP_W4_FIFO_DIAG)); 629 printf("\tStat: %x\n", sc->stat); 630 printf("\tIpackets=%d, Opackets=%d\n", 631 ifp->if_ipackets, ifp->if_opackets); 632 printf("\tNOF=%d, NOMB=%d, RXOF=%d, RXOL=%d, TXU=%d\n", 633 sc->rx_no_first, sc->rx_no_mbuf, sc->rx_overrunf, 634 sc->rx_overrunl, sc->tx_underrun); 635#else 636 637#ifdef DIAGNOSTIC 638 printf("ep%d: Status: %x (input buffer overflow)\n", 639 sc->unit, status); 640#else 641 ++ifp->if_ierrors; 642#endif 643 644#endif 645 epinit_locked(sc); 646 EP_UNLOCK(sc); 647 return; 648 } 649 if (status & S_TX_COMPLETE) { 650 ifp->if_timer = 0; 651 /* 652 * We need ACK. We do it at the end. 653 * 654 * We need to read TX_STATUS until we get a 655 * 0 status in order to turn off the interrupt flag. 656 */ 657 while ((status = CSR_READ_1(sc, EP_W1_TX_STATUS)) & 658 TXS_COMPLETE) { 659 if (status & TXS_SUCCES_INTR_REQ); 660 else if (status & 661 (TXS_UNDERRUN | TXS_JABBER | 662 TXS_MAX_COLLISION)) { 663 CSR_WRITE_2(sc, EP_COMMAND, TX_RESET); 664 if (status & TXS_UNDERRUN) { 665#ifdef EP_LOCAL_STATS 666 sc->tx_underrun++; 667#endif 668 } else { 669 if (status & TXS_JABBER); 670 else 671 ++ifp->if_collisions; 672 /* TXS_MAX_COLLISION 673 * we shouldn't get 674 * here 675 */ 676 } 677 ++ifp->if_oerrors; 678 CSR_WRITE_2(sc, EP_COMMAND, TX_ENABLE); 679 /* 680 * To have a tx_avail_int but giving 681 * the chance to the Reception 682 */ 683 if (ifp->if_snd.ifq_head) 684 CSR_WRITE_2(sc, EP_COMMAND, 685 SET_TX_AVAIL_THRESH | 8); 686 } 687 /* pops up the next status */ 688 CSR_WRITE_1(sc, EP_W1_TX_STATUS, 0x0); 689 } /* while */ 690 ifp->if_flags &= ~IFF_OACTIVE; 691 GO_WINDOW(sc, 1); 692 CSR_READ_2(sc, EP_W1_FREE_TX); 693 epstart_locked(ifp); 694 } /* end TX_COMPLETE */ 695 } 696 697 CSR_WRITE_2(sc, EP_COMMAND, C_INTR_LATCH); /* ACK int Latch */ 698 699 if ((status = CSR_READ_2(sc, EP_STATUS)) & S_5_INTS) 700 goto rescan; 701 702 /* re-enable Ints */ 703 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK | S_5_INTS); 704 EP_UNLOCK(sc); 705} 706 707static void 708epread(struct ep_softc *sc) 709{ 710 struct mbuf *top, *mcur, *m; 711 struct ifnet *ifp; 712 int lenthisone; 713 short rx_fifo2, status; 714 short rx_fifo; 715 716/* XXX Must be called with sc locked */ 717 718 ifp = &sc->arpcom.ac_if; 719 status = CSR_READ_2(sc, EP_W1_RX_STATUS); 720 721read_again: 722 723 if (status & ERR_RX) { 724 ++ifp->if_ierrors; 725 if (status & ERR_RX_OVERRUN) { 726 /* 727 * We can think the rx latency is actually 728 * greather than we expect 729 */ 730#ifdef EP_LOCAL_STATS 731 if (EP_FTST(sc, F_RX_FIRST)) 732 sc->rx_overrunf++; 733 else 734 sc->rx_overrunl++; 735#endif 736 } 737 goto out; 738 } 739 rx_fifo = rx_fifo2 = status & RX_BYTES_MASK; 740 741 if (EP_FTST(sc, F_RX_FIRST)) { 742 MGETHDR(m, M_DONTWAIT, MT_DATA); 743 if (!m) 744 goto out; 745 if (rx_fifo >= MINCLSIZE) 746 MCLGET(m, M_DONTWAIT); 747 sc->top = sc->mcur = top = m; 748#define EROUND ((sizeof(struct ether_header) + 3) & ~3) 749#define EOFF (EROUND - sizeof(struct ether_header)) 750 top->m_data += EOFF; 751 752 /* Read what should be the header. */ 753 CSR_READ_MULTI_2(sc, EP_W1_RX_PIO_RD_1, 754 mtod(top, uint16_t *), sizeof(struct ether_header) / 2); 755 top->m_len = sizeof(struct ether_header); 756 rx_fifo -= sizeof(struct ether_header); 757 sc->cur_len = rx_fifo2; 758 } else { 759 /* come here if we didn't have a complete packet last time */ 760 top = sc->top; 761 m = sc->mcur; 762 sc->cur_len += rx_fifo2; 763 } 764 765 /* Reads what is left in the RX FIFO */ 766 while (rx_fifo > 0) { 767 lenthisone = min(rx_fifo, M_TRAILINGSPACE(m)); 768 if (lenthisone == 0) { /* no room in this one */ 769 mcur = m; 770 MGET(m, M_DONTWAIT, MT_DATA); 771 if (!m) 772 goto out; 773 if (rx_fifo >= MINCLSIZE) 774 MCLGET(m, M_DONTWAIT); 775 m->m_len = 0; 776 mcur->m_next = m; 777 lenthisone = min(rx_fifo, M_TRAILINGSPACE(m)); 778 } 779 if (EP_FTST(sc, F_ACCESS_32_BITS)) { 780 /* default for EISA configured cards */ 781 CSR_READ_MULTI_4(sc, EP_W1_RX_PIO_RD_1, 782 (uint32_t *)(mtod(m, caddr_t)+m->m_len), 783 lenthisone / 4); 784 m->m_len += (lenthisone & ~3); 785 if (lenthisone & 3) 786 CSR_READ_MULTI_1(sc, EP_W1_RX_PIO_RD_1, 787 mtod(m, caddr_t)+m->m_len, lenthisone & 3); 788 m->m_len += (lenthisone & 3); 789 } else { 790 CSR_READ_MULTI_2(sc, EP_W1_RX_PIO_RD_1, 791 (uint16_t *)(mtod(m, caddr_t)+m->m_len), 792 lenthisone / 2); 793 m->m_len += lenthisone; 794 if (lenthisone & 1) 795 *(mtod(m, caddr_t)+m->m_len - 1) = 796 CSR_READ_1(sc, EP_W1_RX_PIO_RD_1); 797 } 798 rx_fifo -= lenthisone; 799 } 800 801 if (status & ERR_RX_INCOMPLETE) { 802 /* we haven't received the complete packet */ 803 sc->mcur = m; 804#ifdef EP_LOCAL_STATS 805 /* to know how often we come here */ 806 sc->rx_no_first++; 807#endif 808 EP_FRST(sc, F_RX_FIRST); 809 status = CSR_READ_2(sc, EP_W1_RX_STATUS); 810 if (!status & ERR_RX_INCOMPLETE) { 811 /* 812 * We see if by now, the packet has completly 813 * arrived 814 */ 815 goto read_again; 816 } 817 CSR_WRITE_2(sc, EP_COMMAND, 818 SET_RX_EARLY_THRESH | RX_NEXT_EARLY_THRESH); 819 return; 820 } 821 CSR_WRITE_2(sc, EP_COMMAND, RX_DISCARD_TOP_PACK); 822 ++ifp->if_ipackets; 823 EP_FSET(sc, F_RX_FIRST); 824 top->m_pkthdr.rcvif = &sc->arpcom.ac_if; 825 top->m_pkthdr.len = sc->cur_len; 826 827 /* 828 * Drop locks before calling if_input() since it may re-enter 829 * ep_start() in the netisr case. This would result in a 830 * lock reversal. Better performance might be obtained by 831 * chaining all packets received, dropping the lock, and then 832 * calling if_input() on each one. 833 */ 834 EP_UNLOCK(sc); 835 (*ifp->if_input) (ifp, top); 836 EP_LOCK(sc); 837 sc->top = 0; 838 EP_BUSY_WAIT(sc); 839 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); 840 return; 841 842out: 843 CSR_WRITE_2(sc, EP_COMMAND, RX_DISCARD_TOP_PACK); 844 if (sc->top) { 845 m_freem(sc->top); 846 sc->top = 0; 847#ifdef EP_LOCAL_STATS 848 sc->rx_no_mbuf++; 849#endif 850 } 851 EP_FSET(sc, F_RX_FIRST); 852 EP_BUSY_WAIT(sc); 853 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); 854} 855 856static int 857ep_ifmedia_upd(struct ifnet *ifp) 858{ 859 struct ep_softc *sc = ifp->if_softc; 860 int i = 0, j; 861 862 GO_WINDOW(sc, 0); 863 CSR_WRITE_2(sc, EP_COMMAND, STOP_TRANSCEIVER); 864 GO_WINDOW(sc, 4); 865 CSR_WRITE_2(sc, EP_W4_MEDIA_TYPE, DISABLE_UTP); 866 GO_WINDOW(sc, 0); 867 868 switch (IFM_SUBTYPE(sc->ifmedia.ifm_media)) { 869 case IFM_10_T: 870 if (sc->ep_connectors & UTP) { 871 i = ACF_CONNECTOR_UTP; 872 GO_WINDOW(sc, 4); 873 CSR_WRITE_2(sc, EP_W4_MEDIA_TYPE, ENABLE_UTP); 874 } 875 break; 876 case IFM_10_2: 877 if (sc->ep_connectors & BNC) { 878 i = ACF_CONNECTOR_BNC; 879 CSR_WRITE_2(sc, EP_COMMAND, START_TRANSCEIVER); 880 DELAY(DELAY_MULTIPLE * 1000); 881 } 882 break; 883 case IFM_10_5: 884 if (sc->ep_connectors & AUI) 885 i = ACF_CONNECTOR_AUI; 886 break; 887 default: 888 i = sc->ep_connector; 889 device_printf(sc->dev, 890 "strange connector type in EEPROM: assuming AUI\n"); 891 } 892 893 GO_WINDOW(sc, 0); 894 j = CSR_READ_2(sc, EP_W0_ADDRESS_CFG) & 0x3fff; 895 CSR_WRITE_2(sc, EP_W0_ADDRESS_CFG, j | (i << ACF_CONNECTOR_BITS)); 896 897 return (0); 898} 899 900static void 901ep_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 902{ 903 struct ep_softc *sc = ifp->if_softc; 904 905 ifmr->ifm_active = sc->ifmedia.ifm_media; 906} 907 908static int 909epioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 910{ 911 struct ep_softc *sc = ifp->if_softc; 912 struct ifreq *ifr = (struct ifreq *) data; 913 int error = 0; 914 915 switch (cmd) { 916 case SIOCSIFFLAGS: 917 EP_LOCK(sc); 918 if (((ifp->if_flags & IFF_UP) == 0) && 919 (ifp->if_flags & IFF_RUNNING)) { 920 ifp->if_flags &= ~IFF_RUNNING; 921 epstop(sc); 922 } else 923 /* reinitialize card on any parameter change */ 924 epinit_locked(sc); 925 EP_UNLOCK(sc); 926 break; 927#ifdef notdef 928 case SIOCGHWADDR: 929 bcopy((caddr_t)sc->sc_addr, (caddr_t)&ifr->ifr_data, 930 sizeof(sc->sc_addr)); 931 break; 932#endif 933 case SIOCADDMULTI: 934 case SIOCDELMULTI: 935 /* 936 * The Etherlink III has no programmable multicast 937 * filter. We always initialize the card to be 938 * promiscuous to multicast, since we're always a 939 * member of the ALL-SYSTEMS group, so there's no 940 * need to process SIOC*MULTI requests. 941 */ 942 error = 0; 943 break; 944 case SIOCSIFMEDIA: 945 case SIOCGIFMEDIA: 946 if (!sc->epb.mii_trans) 947 error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, cmd); 948 else 949 error = EINVAL; 950 break; 951 default: 952 error = ether_ioctl(ifp, cmd, data); 953 break; 954 } 955 return (error); 956} 957 958static void 959epwatchdog(struct ifnet *ifp) 960{ 961 struct ep_softc *sc = ifp->if_softc; 962 963 if (sc->gone) 964 return; 965 ifp->if_flags &= ~IFF_OACTIVE; 966 epstart(ifp); 967 ep_intr(ifp->if_softc); 968} 969 970static void 971epstop(struct ep_softc *sc) 972{ 973 if (sc->gone) 974 return; 975 CSR_WRITE_2(sc, EP_COMMAND, RX_DISABLE); 976 CSR_WRITE_2(sc, EP_COMMAND, RX_DISCARD_TOP_PACK); 977 EP_BUSY_WAIT(sc); 978 979 CSR_WRITE_2(sc, EP_COMMAND, TX_DISABLE); 980 CSR_WRITE_2(sc, EP_COMMAND, STOP_TRANSCEIVER); 981 DELAY(800); 982 983 CSR_WRITE_2(sc, EP_COMMAND, RX_RESET); 984 EP_BUSY_WAIT(sc); 985 CSR_WRITE_2(sc, EP_COMMAND, TX_RESET); 986 EP_BUSY_WAIT(sc); 987 988 CSR_WRITE_2(sc, EP_COMMAND, C_INTR_LATCH); 989 CSR_WRITE_2(sc, EP_COMMAND, SET_RD_0_MASK); 990 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK); 991 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_FILTER); 992} 993