if_ep.c revision 129616
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 129616 2004-05-23 16:11:53Z mux $"); 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/param.h> 64#include <sys/systm.h> 65#include <sys/mbuf.h> 66#include <sys/socket.h> 67#include <sys/sockio.h> 68#include <sys/bus.h> 69 70#include <machine/bus.h> 71#include <machine/resource.h> 72#include <sys/rman.h> 73 74#include <net/if.h> 75#include <net/if_arp.h> 76#include <net/if_media.h> 77#include <net/ethernet.h> 78#include <net/bpf.h> 79 80#include <dev/ep/if_epreg.h> 81#include <dev/ep/if_epvar.h> 82 83/* Exported variables */ 84devclass_t ep_devclass; 85 86static int ep_media2if_media[] = 87{IFM_10_T, IFM_10_5, IFM_NONE, IFM_10_2, IFM_NONE}; 88 89/* if functions */ 90static void epinit(void *); 91static int epioctl(struct ifnet *, u_long, caddr_t); 92static void epstart(struct ifnet *); 93static void epwatchdog(struct ifnet *); 94 95static void epstart_locked(struct ifnet *); 96static void epinit_locked(struct ep_softc *); 97 98/* if_media functions */ 99static int ep_ifmedia_upd(struct ifnet *); 100static void ep_ifmedia_sts(struct ifnet *, struct ifmediareq *); 101 102static void epstop(struct ep_softc *); 103static void epread(struct ep_softc *); 104static int eeprom_rdy(struct ep_softc *); 105 106#define EP_FTST(sc, f) (sc->stat & (f)) 107#define EP_FSET(sc, f) (sc->stat |= (f)) 108#define EP_FRST(sc, f) (sc->stat &= ~(f)) 109 110static int 111eeprom_rdy(struct ep_softc *sc) 112{ 113 int i; 114 115 for (i = 0; is_eeprom_busy(sc) && i < MAX_EEPROMBUSY; i++) 116 DELAY(100); 117 118 if (i >= MAX_EEPROMBUSY) { 119 printf("ep%d: eeprom failed to come ready.\n", sc->unit); 120 return (ENXIO); 121 } 122 123 return (0); 124} 125 126/* 127 * get_e: gets a 16 bits word from the EEPROM. we must have set the window 128 * before 129 */ 130int 131get_e(struct ep_softc *sc, u_int16_t offset, u_int16_t *result) 132{ 133 134 if (eeprom_rdy(sc)) 135 return (ENXIO); 136 137 CSR_WRITE_2(sc, EP_W0_EEPROM_COMMAND, 138 (EEPROM_CMD_RD << sc->epb.cmd_off) | offset); 139 140 if (eeprom_rdy(sc)) 141 return (ENXIO); 142 143 (*result) = CSR_READ_2(sc, EP_W0_EEPROM_DATA); 144 145 return (0); 146} 147 148int 149ep_get_macaddr(struct ep_softc *sc, u_char *addr) 150{ 151 int i; 152 u_int16_t result; 153 int error; 154 u_int16_t *macaddr; 155 156 macaddr = (u_int16_t *) addr; 157 158 GO_WINDOW(sc, 0); 159 for (i = EEPROM_NODE_ADDR_0; i <= EEPROM_NODE_ADDR_2; i++) { 160 error = get_e(sc, i, &result); 161 if (error) 162 return (error); 163 macaddr[i] = htons(result); 164 } 165 166 return (0); 167} 168 169int 170ep_alloc(device_t dev) 171{ 172 struct ep_softc *sc = device_get_softc(dev); 173 int rid; 174 int error = 0; 175 u_int16_t result; 176 177 rid = 0; 178 sc->iobase = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, 179 RF_ACTIVE); 180 if (!sc->iobase) { 181 device_printf(dev, "No I/O space?!\n"); 182 error = ENXIO; 183 goto bad; 184 } 185 rid = 0; 186 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 187 if (!sc->irq) { 188 device_printf(dev, "No irq?!\n"); 189 error = ENXIO; 190 goto bad; 191 } 192 sc->dev = dev; 193 sc->unit = device_get_unit(dev); 194 sc->stat = 0; /* 16 bit access */ 195 196 sc->bst = rman_get_bustag(sc->iobase); 197 sc->bsh = rman_get_bushandle(sc->iobase); 198 199 sc->ep_connectors = 0; 200 sc->ep_connector = 0; 201 202 GO_WINDOW(sc, 0); 203 sc->epb.cmd_off = 0; 204 205 error = get_e(sc, EEPROM_PROD_ID, &result); 206 if (error) 207 goto bad; 208 sc->epb.prod_id = result; 209 210 error = get_e(sc, EEPROM_RESOURCE_CFG, &result); 211 if (error) 212 goto bad; 213 sc->epb.res_cfg = result; 214 215bad: 216 if (error != 0) 217 ep_free(dev); 218 return (error); 219} 220 221void 222ep_get_media(struct ep_softc *sc) 223{ 224 u_int16_t config; 225 226 GO_WINDOW(sc, 0); 227 config = CSR_READ_2(sc, EP_W0_CONFIG_CTRL); 228 if (config & IS_AUI) 229 sc->ep_connectors |= AUI; 230 if (config & IS_BNC) 231 sc->ep_connectors |= BNC; 232 if (config & IS_UTP) 233 sc->ep_connectors |= UTP; 234 235 if (!(sc->ep_connectors & 7)) 236 if (bootverbose) 237 device_printf(sc->dev, "no connectors!\n"); 238 239 /* 240 * This works for most of the cards so we'll do it here. 241 * The cards that require something different can override 242 * this later on. 243 */ 244 sc->ep_connector = CSR_READ_2(sc, EP_W0_ADDRESS_CFG) >> ACF_CONNECTOR_BITS; 245} 246 247void 248ep_free(device_t dev) 249{ 250 struct ep_softc *sc = device_get_softc(dev); 251 252 if (sc->ep_intrhand) 253 bus_teardown_intr(dev, sc->irq, sc->ep_intrhand); 254 if (sc->iobase) 255 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->iobase); 256 if (sc->irq) 257 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq); 258} 259 260int 261ep_attach(struct ep_softc *sc) 262{ 263 struct ifnet *ifp = NULL; 264 struct ifmedia *ifm = NULL; 265 u_short *p; 266 int i; 267 int attached; 268 int error; 269 270 sc->gone = 0; 271 EP_LOCK_INIT(sc); 272 error = ep_get_macaddr(sc, (u_char *)&sc->arpcom.ac_enaddr); 273 if (error) { 274 device_printf(sc->dev, "Unable to get Ethernet address!\n"); 275 EP_LOCK_DESTORY(sc); 276 return (ENXIO); 277 } 278 /* 279 * Setup the station address 280 */ 281 p = (u_short *)&sc->arpcom.ac_enaddr; 282 GO_WINDOW(sc, 2); 283 for (i = 0; i < 3; i++) 284 CSR_WRITE_2(sc, EP_W2_ADDR_0 + (i * 2), ntohs(p[i])); 285 286 ifp = &sc->arpcom.ac_if; 287 attached = (ifp->if_softc != 0); 288 289 ifp->if_softc = sc; 290 if_initname(ifp, device_get_name(sc->dev), device_get_unit(sc->dev)); 291 ifp->if_mtu = ETHERMTU; 292 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 293 ifp->if_start = epstart; 294 ifp->if_ioctl = epioctl; 295 ifp->if_watchdog = epwatchdog; 296 ifp->if_init = epinit; 297 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 298 299 if (!sc->epb.mii_trans) { 300 ifmedia_init(&sc->ifmedia, 0, ep_ifmedia_upd, ep_ifmedia_sts); 301 302 if (sc->ep_connectors & AUI) 303 ifmedia_add(&sc->ifmedia, 304 IFM_ETHER | IFM_10_5, 0, NULL); 305 if (sc->ep_connectors & UTP) 306 ifmedia_add(&sc->ifmedia, 307 IFM_ETHER | IFM_10_T, 0, NULL); 308 if (sc->ep_connectors & BNC) 309 ifmedia_add(&sc->ifmedia, 310 IFM_ETHER | IFM_10_2, 0, NULL); 311 if (!sc->ep_connectors) 312 ifmedia_add(&sc->ifmedia, 313 IFM_ETHER | IFM_NONE, 0, NULL); 314 315 ifmedia_set(&sc->ifmedia, 316 IFM_ETHER | ep_media2if_media[sc->ep_connector]); 317 318 ifm = &sc->ifmedia; 319 ifm->ifm_media = ifm->ifm_cur->ifm_media; 320 ep_ifmedia_upd(ifp); 321 } 322 if (!attached) 323 ether_ifattach(ifp, sc->arpcom.ac_enaddr); 324 325#ifdef EP_LOCAL_STATS 326 sc->rx_no_first = sc->rx_no_mbuf = sc->rx_bpf_disc = 327 sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0; 328#endif 329 EP_FSET(sc, F_RX_FIRST); 330 sc->top = sc->mcur = 0; 331 332 epstop(sc); 333 334 return (0); 335} 336 337int 338ep_detach(device_t dev) 339{ 340 struct ep_softc *sc; 341 struct ifnet *ifp; 342 343 sc = device_get_softc(dev); 344 EP_ASSERT_UNLOCKED(sc); 345 ifp = &sc->arpcom.ac_if; 346 347 if (sc->gone) { 348 device_printf(dev, "already unloaded\n"); 349 return (0); 350 } 351 if (bus_child_present(dev)) 352 epstop(sc); 353 354 ifp->if_flags &= ~IFF_RUNNING; 355 ether_ifdetach(ifp); 356 357 sc->gone = 1; 358 ep_free(dev); 359 EP_LOCK_DESTORY(sc); 360 361 return (0); 362} 363 364static void 365epinit(void *xsc) 366{ 367 struct ep_softc *sc = xsc; 368 EP_LOCK(sc); 369 epinit_locked(sc); 370 EP_UNLOCK(sc); 371} 372 373/* 374 * The order in here seems important. Otherwise we may not receive 375 * interrupts. ?! 376 */ 377static void 378epinit_locked(struct ep_softc *sc) 379{ 380 struct ifnet *ifp = &sc->arpcom.ac_if; 381 int i; 382 383 if (sc->gone) 384 return; 385 386 EP_ASSERT_LOCKED(sc); 387 EP_BUSY_WAIT(sc); 388 389 GO_WINDOW(sc, 0); 390 CSR_WRITE_2(sc, EP_COMMAND, STOP_TRANSCEIVER); 391 GO_WINDOW(sc, 4); 392 CSR_WRITE_2(sc, EP_W4_MEDIA_TYPE, DISABLE_UTP); 393 GO_WINDOW(sc, 0); 394 395 /* Disable the card */ 396 CSR_WRITE_2(sc, EP_W0_CONFIG_CTRL, 0); 397 398 /* Enable the card */ 399 CSR_WRITE_2(sc, EP_W0_CONFIG_CTRL, ENABLE_DRQ_IRQ); 400 401 GO_WINDOW(sc, 2); 402 403 /* Reload the ether_addr. */ 404 for (i = 0; i < 6; i++) 405 CSR_WRITE_1(sc, EP_W2_ADDR_0 + i, sc->arpcom.ac_enaddr[i]); 406 407 CSR_WRITE_2(sc, EP_COMMAND, RX_RESET); 408 CSR_WRITE_2(sc, EP_COMMAND, TX_RESET); 409 EP_BUSY_WAIT(sc); 410 411 /* Window 1 is operating window */ 412 GO_WINDOW(sc, 1); 413 for (i = 0; i < 31; i++) 414 CSR_READ_1(sc, EP_W1_TX_STATUS); 415 416 /* get rid of stray intr's */ 417 CSR_WRITE_2(sc, EP_COMMAND, ACK_INTR | 0xff); 418 419 CSR_WRITE_2(sc, EP_COMMAND, SET_RD_0_MASK | S_5_INTS); 420 421 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK | S_5_INTS); 422 423 if (ifp->if_flags & IFF_PROMISC) 424 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL | 425 FIL_MULTICAST | FIL_BRDCST | FIL_PROMISC); 426 else 427 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL | 428 FIL_MULTICAST | FIL_BRDCST); 429 430 if (!sc->epb.mii_trans) 431 ep_ifmedia_upd(ifp); 432 433 CSR_WRITE_2(sc, EP_COMMAND, RX_ENABLE); 434 CSR_WRITE_2(sc, EP_COMMAND, TX_ENABLE); 435 436 ifp->if_flags |= IFF_RUNNING; 437 ifp->if_flags &= ~IFF_OACTIVE; /* just in case */ 438 439#ifdef EP_LOCAL_STATS 440 sc->rx_no_first = sc->rx_no_mbuf = 441 sc->rx_overrunf = sc->rx_overrunl = sc->tx_underrun = 0; 442#endif 443 EP_FSET(sc, F_RX_FIRST); 444 if (sc->top) { 445 m_freem(sc->top); 446 sc->top = sc->mcur = 0; 447 } 448 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); 449 CSR_WRITE_2(sc, EP_COMMAND, SET_TX_START_THRESH | 16); 450 451 /* 452 * Store up a bunch of mbuf's for use later. (MAX_MBS). 453 * First we free up any that we had in case we're being 454 * called from intr or somewhere else. 455 */ 456 457 GO_WINDOW(sc, 1); 458 epstart_locked(ifp); 459} 460 461static void 462epstart(struct ifnet *ifp) 463{ 464 struct ep_softc *sc; 465 sc = ifp->if_softc; 466 EP_LOCK(sc); 467 epstart_locked(ifp); 468 EP_UNLOCK(sc); 469} 470 471static void 472epstart_locked(struct ifnet *ifp) 473{ 474 struct ep_softc *sc; 475 u_int len; 476 struct mbuf *m, *m0; 477 int pad; 478 479 sc = ifp->if_softc; 480 if (sc->gone) 481 return; 482 EP_ASSERT_LOCKED(sc); 483 EP_BUSY_WAIT(sc); 484 if (ifp->if_flags & IFF_OACTIVE) 485 return; 486startagain: 487 /* Sneak a peek at the next packet */ 488 IF_DEQUEUE(&ifp->if_snd, m0); 489 if (m0 == NULL) 490 return; 491 for (len = 0, m = m0; m != NULL; m = m->m_next) 492 len += m->m_len; 493 494 pad = (4 - len) & 3; 495 496 /* 497 * The 3c509 automatically pads short packets to minimum 498 * ethernet length, but we drop packets that are too large. 499 * Perhaps we should truncate them instead? 500 */ 501 if (len + pad > ETHER_MAX_LEN) { 502 /* packet is obviously too large: toss it */ 503 ifp->if_oerrors++; 504 m_freem(m0); 505 goto readcheck; 506 } 507 if (CSR_READ_2(sc, EP_W1_FREE_TX) < len + pad + 4) { 508 /* no room in FIFO */ 509 CSR_WRITE_2(sc, EP_COMMAND, SET_TX_AVAIL_THRESH | (len + pad + 4)); 510 /* make sure */ 511 if (CSR_READ_2(sc, EP_W1_FREE_TX) < len + pad + 4) { 512 ifp->if_flags |= IFF_OACTIVE; 513 IF_PREPEND(&ifp->if_snd, m0); 514 goto done; 515 } 516 } else 517 CSR_WRITE_2(sc, EP_COMMAND, 518 SET_TX_AVAIL_THRESH | EP_THRESH_DISABLE); 519 520 /* XXX 4.x and earlier would splhigh here */ 521 522 CSR_WRITE_2(sc, EP_W1_TX_PIO_WR_1, len); 523 /* Second dword meaningless */ 524 CSR_WRITE_2(sc, EP_W1_TX_PIO_WR_1, 0x0); 525 526 if (EP_FTST(sc, F_ACCESS_32_BITS)) { 527 for (m = m0; m != NULL; m = m->m_next) { 528 if (m->m_len > 3) 529 CSR_WRITE_MULTI_4(sc, EP_W1_TX_PIO_WR_1, 530 mtod(m, uint32_t *), m->m_len / 4); 531 if (m->m_len & 3) 532 CSR_WRITE_MULTI_1(sc, EP_W1_TX_PIO_WR_1, 533 mtod(m, uint8_t *)+(m->m_len & (~3)), 534 m->m_len & 3); 535 } 536 } else { 537 for (m = m0; m != NULL; m = m->m_next) { 538 if (m->m_len > 1) 539 CSR_WRITE_MULTI_2(sc, EP_W1_TX_PIO_WR_1, 540 mtod(m, uint16_t *), m->m_len / 2); 541 if (m->m_len & 1) 542 CSR_WRITE_1(sc, EP_W1_TX_PIO_WR_1, 543 *(mtod(m, uint8_t *)+m->m_len - 1)); 544 } 545 } 546 547 while (pad--) 548 CSR_WRITE_1(sc, EP_W1_TX_PIO_WR_1, 0); /* Padding */ 549 550 /* XXX and drop splhigh here */ 551 552 BPF_MTAP(ifp, m0); 553 554 ifp->if_timer = 2; 555 ifp->if_opackets++; 556 m_freem(m0); 557 558 /* 559 * Is another packet coming in? We don't want to overflow 560 * the tiny RX fifo. 561 */ 562readcheck: 563 if (CSR_READ_2(sc, EP_W1_RX_STATUS) & RX_BYTES_MASK) { 564 /* 565 * we check if we have packets left, in that case 566 * we prepare to come back later 567 */ 568 if (ifp->if_snd.ifq_head) 569 CSR_WRITE_2(sc, EP_COMMAND, SET_TX_AVAIL_THRESH | 8); 570 goto done; 571 } 572 goto startagain; 573done:; 574 return; 575} 576 577void 578ep_intr(void *arg) 579{ 580 struct ep_softc *sc; 581 int status; 582 struct ifnet *ifp; 583 584 sc = (struct ep_softc *) arg; 585 EP_LOCK(sc); 586 /* XXX 4.x splbio'd here to reduce interruptability */ 587 588 /* 589 * quick fix: Try to detect an interrupt when the card goes away. 590 */ 591 if (sc->gone || CSR_READ_2(sc, EP_STATUS) == 0xffff) { 592 EP_UNLOCK(sc); 593 return; 594 } 595 ifp = &sc->arpcom.ac_if; 596 597 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK); /* disable all Ints */ 598 599rescan: 600 601 while ((status = CSR_READ_2(sc, EP_STATUS)) & S_5_INTS) { 602 603 /* first acknowledge all interrupt sources */ 604 CSR_WRITE_2(sc, EP_COMMAND, ACK_INTR | (status & S_MASK)); 605 606 if (status & (S_RX_COMPLETE | S_RX_EARLY)) 607 epread(sc); 608 if (status & S_TX_AVAIL) { 609 /* we need ACK */ 610 ifp->if_timer = 0; 611 ifp->if_flags &= ~IFF_OACTIVE; 612 GO_WINDOW(sc, 1); 613 CSR_READ_2(sc, EP_W1_FREE_TX); 614 epstart_locked(ifp); 615 } 616 if (status & S_CARD_FAILURE) { 617 ifp->if_timer = 0; 618#ifdef EP_LOCAL_STATS 619 printf("\nep%d:\n\tStatus: %x\n", sc->unit, status); 620 GO_WINDOW(sc, 4); 621 printf("\tFIFO Diagnostic: %x\n", 622 CSR_READ_2(sc, EP_W4_FIFO_DIAG)); 623 printf("\tStat: %x\n", sc->stat); 624 printf("\tIpackets=%d, Opackets=%d\n", 625 ifp->if_ipackets, ifp->if_opackets); 626 printf("\tNOF=%d, NOMB=%d, RXOF=%d, RXOL=%d, TXU=%d\n", 627 sc->rx_no_first, sc->rx_no_mbuf, sc->rx_overrunf, 628 sc->rx_overrunl, sc->tx_underrun); 629#else 630 631#ifdef DIAGNOSTIC 632 printf("ep%d: Status: %x (input buffer overflow)\n", 633 sc->unit, status); 634#else 635 ++ifp->if_ierrors; 636#endif 637 638#endif 639 epinit_locked(sc); 640 EP_UNLOCK(sc); 641 return; 642 } 643 if (status & S_TX_COMPLETE) { 644 ifp->if_timer = 0; 645 /* 646 * We need ACK. We do it at the end. 647 * 648 * We need to read TX_STATUS until we get a 649 * 0 status in order to turn off the interrupt flag. 650 */ 651 while ((status = CSR_READ_1(sc, EP_W1_TX_STATUS)) & 652 TXS_COMPLETE) { 653 if (status & TXS_SUCCES_INTR_REQ); 654 else if (status & 655 (TXS_UNDERRUN | TXS_JABBER | 656 TXS_MAX_COLLISION)) { 657 CSR_WRITE_2(sc, EP_COMMAND, TX_RESET); 658 if (status & TXS_UNDERRUN) { 659#ifdef EP_LOCAL_STATS 660 sc->tx_underrun++; 661#endif 662 } else { 663 if (status & TXS_JABBER); 664 else 665 ++ifp->if_collisions; 666 /* TXS_MAX_COLLISION 667 * we shouldn't get 668 * here 669 */ 670 } 671 ++ifp->if_oerrors; 672 CSR_WRITE_2(sc, EP_COMMAND, TX_ENABLE); 673 /* 674 * To have a tx_avail_int but giving 675 * the chance to the Reception 676 */ 677 if (ifp->if_snd.ifq_head) 678 CSR_WRITE_2(sc, EP_COMMAND, 679 SET_TX_AVAIL_THRESH | 8); 680 } 681 /* pops up the next status */ 682 CSR_WRITE_1(sc, EP_W1_TX_STATUS, 0x0); 683 } /* while */ 684 ifp->if_flags &= ~IFF_OACTIVE; 685 GO_WINDOW(sc, 1); 686 CSR_READ_2(sc, EP_W1_FREE_TX); 687 epstart_locked(ifp); 688 } /* end TX_COMPLETE */ 689 } 690 691 CSR_WRITE_2(sc, EP_COMMAND, C_INTR_LATCH); /* ACK int Latch */ 692 693 if ((status = CSR_READ_2(sc, EP_STATUS)) & S_5_INTS) 694 goto rescan; 695 696 /* re-enable Ints */ 697 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK | S_5_INTS); 698 EP_UNLOCK(sc); 699} 700 701static void 702epread(struct ep_softc *sc) 703{ 704 struct mbuf *top, *mcur, *m; 705 struct ifnet *ifp; 706 int lenthisone; 707 short rx_fifo2, status; 708 short rx_fifo; 709 710/* XXX Must be called with sc locked */ 711 712 ifp = &sc->arpcom.ac_if; 713 status = CSR_READ_2(sc, EP_W1_RX_STATUS); 714 715read_again: 716 717 if (status & ERR_RX) { 718 ++ifp->if_ierrors; 719 if (status & ERR_RX_OVERRUN) { 720 /* 721 * We can think the rx latency is actually 722 * greather than we expect 723 */ 724#ifdef EP_LOCAL_STATS 725 if (EP_FTST(sc, F_RX_FIRST)) 726 sc->rx_overrunf++; 727 else 728 sc->rx_overrunl++; 729#endif 730 } 731 goto out; 732 } 733 rx_fifo = rx_fifo2 = status & RX_BYTES_MASK; 734 735 if (EP_FTST(sc, F_RX_FIRST)) { 736 MGETHDR(m, M_DONTWAIT, MT_DATA); 737 if (!m) 738 goto out; 739 if (rx_fifo >= MINCLSIZE) 740 MCLGET(m, M_DONTWAIT); 741 sc->top = sc->mcur = top = m; 742#define EROUND ((sizeof(struct ether_header) + 3) & ~3) 743#define EOFF (EROUND - sizeof(struct ether_header)) 744 top->m_data += EOFF; 745 746 /* Read what should be the header. */ 747 CSR_READ_MULTI_2(sc, EP_W1_RX_PIO_RD_1, 748 mtod(top, uint16_t *), sizeof(struct ether_header) / 2); 749 top->m_len = sizeof(struct ether_header); 750 rx_fifo -= sizeof(struct ether_header); 751 sc->cur_len = rx_fifo2; 752 } else { 753 /* come here if we didn't have a complete packet last time */ 754 top = sc->top; 755 m = sc->mcur; 756 sc->cur_len += rx_fifo2; 757 } 758 759 /* Reads what is left in the RX FIFO */ 760 while (rx_fifo > 0) { 761 lenthisone = min(rx_fifo, M_TRAILINGSPACE(m)); 762 if (lenthisone == 0) { /* no room in this one */ 763 mcur = m; 764 MGET(m, M_DONTWAIT, MT_DATA); 765 if (!m) 766 goto out; 767 if (rx_fifo >= MINCLSIZE) 768 MCLGET(m, M_DONTWAIT); 769 m->m_len = 0; 770 mcur->m_next = m; 771 lenthisone = min(rx_fifo, M_TRAILINGSPACE(m)); 772 } 773 if (EP_FTST(sc, F_ACCESS_32_BITS)) { 774 /* default for EISA configured cards */ 775 CSR_READ_MULTI_4(sc, EP_W1_RX_PIO_RD_1, 776 (uint32_t *)(mtod(m, caddr_t)+m->m_len), 777 lenthisone / 4); 778 m->m_len += (lenthisone & ~3); 779 if (lenthisone & 3) 780 CSR_READ_MULTI_1(sc, EP_W1_RX_PIO_RD_1, 781 mtod(m, caddr_t)+m->m_len, lenthisone & 3); 782 m->m_len += (lenthisone & 3); 783 } else { 784 CSR_READ_MULTI_2(sc, EP_W1_RX_PIO_RD_1, 785 (uint16_t *)(mtod(m, caddr_t)+m->m_len), 786 lenthisone / 2); 787 m->m_len += lenthisone; 788 if (lenthisone & 1) 789 *(mtod(m, caddr_t)+m->m_len - 1) = 790 CSR_READ_1(sc, EP_W1_RX_PIO_RD_1); 791 } 792 rx_fifo -= lenthisone; 793 } 794 795 if (status & ERR_RX_INCOMPLETE) { 796 /* we haven't received the complete packet */ 797 sc->mcur = m; 798#ifdef EP_LOCAL_STATS 799 /* to know how often we come here */ 800 sc->rx_no_first++; 801#endif 802 EP_FRST(sc, F_RX_FIRST); 803 status = CSR_READ_2(sc, EP_W1_RX_STATUS); 804 if (!status & ERR_RX_INCOMPLETE) { 805 /* 806 * We see if by now, the packet has completly 807 * arrived 808 */ 809 goto read_again; 810 } 811 CSR_WRITE_2(sc, EP_COMMAND, 812 SET_RX_EARLY_THRESH | RX_NEXT_EARLY_THRESH); 813 return; 814 } 815 CSR_WRITE_2(sc, EP_COMMAND, RX_DISCARD_TOP_PACK); 816 ++ifp->if_ipackets; 817 EP_FSET(sc, F_RX_FIRST); 818 top->m_pkthdr.rcvif = &sc->arpcom.ac_if; 819 top->m_pkthdr.len = sc->cur_len; 820 821 /* 822 * Drop locks before calling if_input() since it may re-enter 823 * ep_start() in the netisr case. This would result in a 824 * lock reversal. Better performance might be obtained by 825 * chaining all packets received, dropping the lock, and then 826 * calling if_input() on each one. 827 */ 828 EP_UNLOCK(sc); 829 (*ifp->if_input) (ifp, top); 830 EP_LOCK(sc); 831 sc->top = 0; 832 EP_BUSY_WAIT(sc); 833 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); 834 return; 835 836out: 837 CSR_WRITE_2(sc, EP_COMMAND, RX_DISCARD_TOP_PACK); 838 if (sc->top) { 839 m_freem(sc->top); 840 sc->top = 0; 841#ifdef EP_LOCAL_STATS 842 sc->rx_no_mbuf++; 843#endif 844 } 845 EP_FSET(sc, F_RX_FIRST); 846 EP_BUSY_WAIT(sc); 847 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH); 848} 849 850static int 851ep_ifmedia_upd(struct ifnet *ifp) 852{ 853 struct ep_softc *sc = ifp->if_softc; 854 int i = 0, j; 855 856 GO_WINDOW(sc, 0); 857 CSR_WRITE_2(sc, EP_COMMAND, STOP_TRANSCEIVER); 858 GO_WINDOW(sc, 4); 859 CSR_WRITE_2(sc, EP_W4_MEDIA_TYPE, DISABLE_UTP); 860 GO_WINDOW(sc, 0); 861 862 switch (IFM_SUBTYPE(sc->ifmedia.ifm_media)) { 863 case IFM_10_T: 864 if (sc->ep_connectors & UTP) { 865 i = ACF_CONNECTOR_UTP; 866 GO_WINDOW(sc, 4); 867 CSR_WRITE_2(sc, EP_W4_MEDIA_TYPE, ENABLE_UTP); 868 } 869 break; 870 case IFM_10_2: 871 if (sc->ep_connectors & BNC) { 872 i = ACF_CONNECTOR_BNC; 873 CSR_WRITE_2(sc, EP_COMMAND, START_TRANSCEIVER); 874 DELAY(DELAY_MULTIPLE * 1000); 875 } 876 break; 877 case IFM_10_5: 878 if (sc->ep_connectors & AUI) 879 i = ACF_CONNECTOR_AUI; 880 break; 881 default: 882 i = sc->ep_connector; 883 device_printf(sc->dev, 884 "strange connector type in EEPROM: assuming AUI\n"); 885 } 886 887 GO_WINDOW(sc, 0); 888 j = CSR_READ_2(sc, EP_W0_ADDRESS_CFG) & 0x3fff; 889 CSR_WRITE_2(sc, EP_W0_ADDRESS_CFG, j | (i << ACF_CONNECTOR_BITS)); 890 891 return (0); 892} 893 894static void 895ep_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 896{ 897 struct ep_softc *sc = ifp->if_softc; 898 899 ifmr->ifm_active = sc->ifmedia.ifm_media; 900} 901 902static int 903epioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 904{ 905 struct ep_softc *sc = ifp->if_softc; 906 struct ifreq *ifr = (struct ifreq *) data; 907 int error = 0; 908 909 switch (cmd) { 910 case SIOCSIFFLAGS: 911 EP_LOCK(sc); 912 if (((ifp->if_flags & IFF_UP) == 0) && 913 (ifp->if_flags & IFF_RUNNING)) { 914 ifp->if_flags &= ~IFF_RUNNING; 915 epstop(sc); 916 } else 917 /* reinitialize card on any parameter change */ 918 epinit_locked(sc); 919 EP_UNLOCK(sc); 920 break; 921#ifdef notdef 922 case SIOCGHWADDR: 923 bcopy((caddr_t)sc->sc_addr, (caddr_t)&ifr->ifr_data, 924 sizeof(sc->sc_addr)); 925 break; 926#endif 927 case SIOCADDMULTI: 928 case SIOCDELMULTI: 929 /* 930 * The Etherlink III has no programmable multicast 931 * filter. We always initialize the card to be 932 * promiscuous to multicast, since we're always a 933 * member of the ALL-SYSTEMS group, so there's no 934 * need to process SIOC*MULTI requests. 935 */ 936 error = 0; 937 break; 938 case SIOCSIFMEDIA: 939 case SIOCGIFMEDIA: 940 if (!sc->epb.mii_trans) 941 error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, cmd); 942 else 943 error = EINVAL; 944 break; 945 default: 946 error = ether_ioctl(ifp, cmd, data); 947 break; 948 } 949 return (error); 950} 951 952static void 953epwatchdog(struct ifnet *ifp) 954{ 955 struct ep_softc *sc = ifp->if_softc; 956 957 if (sc->gone) 958 return; 959 ifp->if_flags &= ~IFF_OACTIVE; 960 epstart(ifp); 961 ep_intr(ifp->if_softc); 962} 963 964static void 965epstop(struct ep_softc *sc) 966{ 967 if (sc->gone) 968 return; 969 CSR_WRITE_2(sc, EP_COMMAND, RX_DISABLE); 970 CSR_WRITE_2(sc, EP_COMMAND, RX_DISCARD_TOP_PACK); 971 EP_BUSY_WAIT(sc); 972 973 CSR_WRITE_2(sc, EP_COMMAND, TX_DISABLE); 974 CSR_WRITE_2(sc, EP_COMMAND, STOP_TRANSCEIVER); 975 DELAY(800); 976 977 CSR_WRITE_2(sc, EP_COMMAND, RX_RESET); 978 EP_BUSY_WAIT(sc); 979 CSR_WRITE_2(sc, EP_COMMAND, TX_RESET); 980 EP_BUSY_WAIT(sc); 981 982 CSR_WRITE_2(sc, EP_COMMAND, C_INTR_LATCH); 983 CSR_WRITE_2(sc, EP_COMMAND, SET_RD_0_MASK); 984 CSR_WRITE_2(sc, EP_COMMAND, SET_INTR_MASK); 985 CSR_WRITE_2(sc, EP_COMMAND, SET_RX_FILTER); 986} 987