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sys/dev/le/am79900.c
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1 /* $NetBSD: am79900.c,v 1.17 2005/12/24 20:27:29 perry Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 * Copyright (c) 1992, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Ralph Campbell and Rick Macklem. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 64 */ 65 66 /*- 67 * Copyright (c) 1998 68 * Matthias Drochner. All rights reserved. 69 * Copyright (c) 1995 Charles M. Hannum. All rights reserved. 70 * 71 * This code is derived from software contributed to Berkeley by 72 * Ralph Campbell and Rick Macklem. 73 * 74 * Redistribution and use in source and binary forms, with or without 75 * modification, are permitted provided that the following conditions 76 * are met: 77 * 1. Redistributions of source code must retain the above copyright 78 * notice, this list of conditions and the following disclaimer. 79 * 2. Redistributions in binary form must reproduce the above copyright 80 * notice, this list of conditions and the following disclaimer in the 81 * documentation and/or other materials provided with the distribution. 82 * 3. All advertising materials mentioning features or use of this software 83 * must display the following acknowledgement: 84 * This product includes software developed by the University of 85 * California, Berkeley and its contributors. 86 * 4. Neither the name of the University nor the names of its contributors 87 * may be used to endorse or promote products derived from this software 88 * without specific prior written permission. 89 * 90 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 91 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 92 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 93 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 94 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 95 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 96 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 97 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 98 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 99 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 100 * SUCH DAMAGE. 101 * 102 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 103 */ 104 105 #include <sys/cdefs.h> 106 __FBSDID("$FreeBSD$"); 107 108 #include <sys/param.h> 109 #include <sys/bus.h> 110 #include <sys/endian.h> 111 #include <sys/lock.h> 112 #include <sys/mbuf.h> 113 #include <sys/mutex.h> 114 #include <sys/socket.h> 115 116 #include <net/bpf.h> 117 #include <net/ethernet.h> 118 #include <net/if.h> 119 #include <net/if_arp.h> 120 #include <net/if_dl.h> 121 #include <net/if_media.h> 122 #include <net/if_var.h> 123 124 #include <machine/bus.h> 125 126 #include <dev/le/lancereg.h> 127 #include <dev/le/lancevar.h> 128 #include <dev/le/am79900reg.h> 129 #include <dev/le/am79900var.h> 130 131 static void am79900_meminit(struct lance_softc *); 132 static void am79900_rint(struct lance_softc *); 133 static void am79900_tint(struct lance_softc *); 134 static void am79900_start_locked(struct lance_softc *sc); 135 136 #ifdef LEDEBUG 137 static void am79900_recv_print(struct lance_softc *, int); 138 static void am79900_xmit_print(struct lance_softc *, int); 139 #endif 140 141 int 142 am79900_config(struct am79900_softc *sc, const char* name, int unit) 143 { 144 int error, mem; 145 146 sc->lsc.sc_meminit = am79900_meminit; 147 sc->lsc.sc_start_locked = am79900_start_locked; 148 149 error = lance_config(&sc->lsc, name, unit); 150 if (error != 0) 151 return (error); 152 153 mem = 0; 154 sc->lsc.sc_initaddr = mem; 155 mem += sizeof(struct leinit); 156 sc->lsc.sc_rmdaddr = mem; 157 mem += sizeof(struct lermd) * sc->lsc.sc_nrbuf; 158 sc->lsc.sc_tmdaddr = mem; 159 mem += sizeof(struct letmd) * sc->lsc.sc_ntbuf; 160 sc->lsc.sc_rbufaddr = mem; 161 mem += LEBLEN * sc->lsc.sc_nrbuf; 162 sc->lsc.sc_tbufaddr = mem; 163 mem += LEBLEN * sc->lsc.sc_ntbuf; 164 165 if (mem > sc->lsc.sc_memsize) 166 panic("%s: memsize", __func__); 167 168 lance_attach(&sc->lsc); 169 170 return (0); 171 } 172 173 void 174 am79900_detach(struct am79900_softc *sc) 175 { 176 177 lance_detach(&sc->lsc); 178 } 179 180 /* 181 * Set up the initialization block and the descriptor rings. 182 */ 183 static void 184 am79900_meminit(struct lance_softc *sc) 185 { 186 struct ifnet *ifp = sc->sc_ifp; 187 struct leinit init; 188 struct lermd rmd; 189 struct letmd tmd; 190 u_long a; 191 int bix; 192 193 LE_LOCK_ASSERT(sc, MA_OWNED); 194 195 if (ifp->if_flags & IFF_PROMISC) 196 init.init_mode = LE_HTOLE32(LE_MODE_NORMAL | LE_MODE_PROM); 197 else 198 init.init_mode = LE_HTOLE32(LE_MODE_NORMAL); 199 200 init.init_mode |= LE_HTOLE32(((ffs(sc->sc_ntbuf) - 1) << 28) | 201 ((ffs(sc->sc_nrbuf) - 1) << 20)); 202 203 init.init_padr[0] = LE_HTOLE32(sc->sc_enaddr[0] | 204 (sc->sc_enaddr[1] << 8) | (sc->sc_enaddr[2] << 16) | 205 (sc->sc_enaddr[3] << 24)); 206 init.init_padr[1] = LE_HTOLE32(sc->sc_enaddr[4] | 207 (sc->sc_enaddr[5] << 8)); 208 lance_setladrf(sc, init.init_ladrf); 209 210 sc->sc_last_rd = 0; 211 sc->sc_first_td = sc->sc_last_td = sc->sc_no_td = 0; 212 213 a = sc->sc_addr + LE_RMDADDR(sc, 0); 214 init.init_rdra = LE_HTOLE32(a); 215 216 a = sc->sc_addr + LE_TMDADDR(sc, 0); 217 init.init_tdra = LE_HTOLE32(a); 218 219 (*sc->sc_copytodesc)(sc, &init, LE_INITADDR(sc), sizeof(init)); 220 221 /* 222 * Set up receive ring descriptors. 223 */ 224 for (bix = 0; bix < sc->sc_nrbuf; bix++) { 225 a = sc->sc_addr + LE_RBUFADDR(sc, bix); 226 rmd.rmd0 = LE_HTOLE32(a); 227 rmd.rmd1 = LE_HTOLE32(LE_R1_OWN | LE_R1_ONES | 228 (-LEBLEN & 0xfff)); 229 rmd.rmd2 = 0; 230 rmd.rmd3 = 0; 231 (*sc->sc_copytodesc)(sc, &rmd, LE_RMDADDR(sc, bix), 232 sizeof(rmd)); 233 } 234 235 /* 236 * Set up transmit ring descriptors. 237 */ 238 for (bix = 0; bix < sc->sc_ntbuf; bix++) { 239 a = sc->sc_addr + LE_TBUFADDR(sc, bix); 240 tmd.tmd0 = LE_HTOLE32(a); 241 tmd.tmd1 = LE_HTOLE32(LE_T1_ONES); 242 tmd.tmd2 = 0; 243 tmd.tmd3 = 0; 244 (*sc->sc_copytodesc)(sc, &tmd, LE_TMDADDR(sc, bix), 245 sizeof(tmd)); 246 } 247 } 248 249 static inline void 250 am79900_rint(struct lance_softc *sc) 251 { 252 struct ifnet *ifp = sc->sc_ifp; 253 struct mbuf *m; 254 struct lermd rmd; 255 uint32_t rmd1; 256 int bix, rp; 257 #if defined(__i386__) && !defined(PC98) 258 struct ether_header *eh; 259 #endif 260 261 bix = sc->sc_last_rd; 262 263 /* Process all buffers with valid data. */ 264 for (;;) { 265 rp = LE_RMDADDR(sc, bix); 266 (*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd)); 267 268 rmd1 = LE_LE32TOH(rmd.rmd1); 269 if (rmd1 & LE_R1_OWN) 270 break; 271 272 m = NULL; 273 if ((rmd1 & (LE_R1_ERR | LE_R1_STP | LE_R1_ENP)) != 274 (LE_R1_STP | LE_R1_ENP)){ 275 if (rmd1 & LE_R1_ERR) { 276 #ifdef LEDEBUG 277 if (rmd1 & LE_R1_ENP) { 278 if ((rmd1 & LE_R1_OFLO) == 0) { 279 if (rmd1 & LE_R1_FRAM) 280 if_printf(ifp, 281 "framing error\n"); 282 if (rmd1 & LE_R1_CRC) 283 if_printf(ifp, 284 "crc mismatch\n"); 285 } 286 } else 287 if (rmd1 & LE_R1_OFLO) 288 if_printf(ifp, "overflow\n"); 289 #endif 290 if (rmd1 & LE_R1_BUFF) 291 if_printf(ifp, 292 "receive buffer error\n"); 293 } else if ((rmd1 & (LE_R1_STP | LE_R1_ENP)) != 294 (LE_R1_STP | LE_R1_ENP)) 295 if_printf(ifp, "dropping chained buffer\n"); 296 } else { 297 #ifdef LEDEBUG 298 if (sc->sc_flags & LE_DEBUG) 299 am79900_recv_print(sc, bix); 300 #endif 301 /* Pull the packet off the interface. */ 302 m = lance_get(sc, LE_RBUFADDR(sc, bix), 303 (LE_LE32TOH(rmd.rmd2) & 0xfff) - ETHER_CRC_LEN); 304 } 305 306 rmd.rmd1 = LE_HTOLE32(LE_R1_OWN | LE_R1_ONES | 307 (-LEBLEN & 0xfff)); 308 rmd.rmd2 = 0; 309 rmd.rmd3 = 0; 310 (*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd)); 311 312 if (++bix == sc->sc_nrbuf) 313 bix = 0; 314 315 if (m != NULL) { 316 ifp->if_ipackets++; 317 318 #if defined(__i386__) && !defined(PC98) 319 /* 320 * The VMware LANCE does not present IFF_SIMPLEX 321 * behavior on multicast packets. Thus drop the 322 * packet if it is from ourselves. 323 */ 324 eh = mtod(m, struct ether_header *); 325 if (!ether_cmp(eh->ether_shost, sc->sc_enaddr)) { 326 m_freem(m); 327 continue; 328 } 329 #endif 330 331 /* Pass the packet up. */ 332 LE_UNLOCK(sc); 333 (*ifp->if_input)(ifp, m); 334 LE_LOCK(sc); 335 } else 336 ifp->if_ierrors++; 337 } 338 339 sc->sc_last_rd = bix; 340 } 341 342 static inline void 343 am79900_tint(struct lance_softc *sc) 344 { 345 struct ifnet *ifp = sc->sc_ifp; 346 struct letmd tmd; 347 uint32_t tmd1, tmd2; 348 int bix; 349 350 bix = sc->sc_first_td; 351 352 for (;;) { 353 if (sc->sc_no_td <= 0) 354 break; 355 356 (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix), 357 sizeof(tmd)); 358 359 tmd1 = LE_LE32TOH(tmd.tmd1); 360 361 #ifdef LEDEBUG 362 if (sc->sc_flags & LE_DEBUG) 363 if_printf(ifp, "trans tmd: " 364 "adr %08x, flags/blen %08x\n", 365 LE_LE32TOH(tmd.tmd0), tmd1); 366 #endif 367 368 if (tmd1 & LE_T1_OWN) 369 break; 370 371 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 372 373 if (tmd1 & LE_T1_ERR) { 374 tmd2 = LE_LE32TOH(tmd.tmd2); 375 if (tmd2 & LE_T2_BUFF) 376 if_printf(ifp, "transmit buffer error\n"); 377 else if (tmd2 & LE_T2_UFLO) 378 if_printf(ifp, "underflow\n"); 379 if (tmd2 & (LE_T2_BUFF | LE_T2_UFLO)) { 380 lance_init_locked(sc); 381 return; 382 } 383 if (tmd2 & LE_T2_LCAR) { 384 if (sc->sc_flags & LE_CARRIER) 385 if_link_state_change(ifp, 386 LINK_STATE_DOWN); 387 sc->sc_flags &= ~LE_CARRIER; 388 if (sc->sc_nocarrier) 389 (*sc->sc_nocarrier)(sc); 390 else 391 if_printf(ifp, "lost carrier\n"); 392 } 393 if (tmd2 & LE_T2_LCOL) 394 ifp->if_collisions++; 395 if (tmd2 & LE_T2_RTRY) { 396 #ifdef LEDEBUG 397 if_printf(ifp, "excessive collisions\n"); 398 #endif 399 ifp->if_collisions += 16; 400 } 401 ifp->if_oerrors++; 402 } else { 403 if (tmd1 & LE_T1_ONE) 404 ifp->if_collisions++; 405 else if (tmd1 & LE_T1_MORE) 406 /* Real number is unknown. */ 407 ifp->if_collisions += 2; 408 ifp->if_opackets++; 409 } 410 411 if (++bix == sc->sc_ntbuf) 412 bix = 0; 413 414 --sc->sc_no_td; 415 } 416 417 sc->sc_first_td = bix; 418 419 sc->sc_wdog_timer = sc->sc_no_td > 0 ? 5 : 0; 420 } 421 422 /* 423 * Controller interrupt 424 */ 425 void 426 am79900_intr(void *arg) 427 { 428 struct lance_softc *sc = arg; 429 struct ifnet *ifp = sc->sc_ifp; 430 uint16_t isr; 431 432 LE_LOCK(sc); 433 434 if (sc->sc_hwintr && (*sc->sc_hwintr)(sc) == -1) { 435 ifp->if_ierrors++; 436 lance_init_locked(sc); 437 LE_UNLOCK(sc); 438 return; 439 } 440 441 isr = (*sc->sc_rdcsr)(sc, LE_CSR0); 442 #if defined(LEDEBUG) && LEDEBUG > 1 443 if (sc->sc_flags & LE_DEBUG) 444 if_printf(ifp, "%s: entering with isr=%04x\n", __func__, isr); 445 #endif 446 if ((isr & LE_C0_INTR) == 0) { 447 LE_UNLOCK(sc); 448 return; 449 } 450 451 /* 452 * Clear interrupt source flags and turn off interrupts. If we 453 * don't clear these flags before processing their sources we 454 * could completely miss some interrupt events as the NIC can 455 * change these flags while we're in this handler. We toggle 456 * the interrupt enable bit in order to keep receiving them 457 * (some chips work without this, some don't). 458 */ 459 (*sc->sc_wrcsr)(sc, LE_CSR0, isr & ~(LE_C0_INEA | LE_C0_TDMD | 460 LE_C0_STOP | LE_C0_STRT | LE_C0_INIT)); 461 462 if (isr & LE_C0_ERR) { 463 if (isr & LE_C0_BABL) { 464 #ifdef LEDEBUG 465 if_printf(ifp, "babble\n"); 466 #endif 467 ifp->if_oerrors++; 468 } 469 #if 0 470 if (isr & LE_C0_CERR) { 471 if_printf(ifp, "collision error\n"); 472 ifp->if_collisions++; 473 } 474 #endif 475 if (isr & LE_C0_MISS) { 476 #ifdef LEDEBUG 477 if_printf(ifp, "missed packet\n"); 478 #endif 479 ifp->if_ierrors++; 480 } 481 if (isr & LE_C0_MERR) { 482 if_printf(ifp, "memory error\n"); 483 lance_init_locked(sc); 484 LE_UNLOCK(sc); 485 return; 486 } 487 } 488 489 if ((isr & LE_C0_RXON) == 0) { 490 if_printf(ifp, "receiver disabled\n"); 491 ifp->if_ierrors++; 492 lance_init_locked(sc); 493 LE_UNLOCK(sc); 494 return; 495 } 496 if ((isr & LE_C0_TXON) == 0) { 497 if_printf(ifp, "transmitter disabled\n"); 498 ifp->if_oerrors++; 499 lance_init_locked(sc); 500 LE_UNLOCK(sc); 501 return; 502 } 503 504 /* 505 * Pretend we have carrier; if we don't this will be cleared shortly. 506 */ 507 if (!(sc->sc_flags & LE_CARRIER)) 508 if_link_state_change(ifp, LINK_STATE_UP); 509 sc->sc_flags |= LE_CARRIER; 510 511 if (isr & LE_C0_RINT) 512 am79900_rint(sc); 513 if (isr & LE_C0_TINT) 514 am79900_tint(sc); 515 516 /* Enable interrupts again. */ 517 (*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA); 518 519 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 520 am79900_start_locked(sc); 521 522 LE_UNLOCK(sc); 523 } 524 525 /* 526 * Set up output on interface. 527 * Get another datagram to send off of the interface queue, and map it to the 528 * interface before starting the output. 529 */ 530 static void 531 am79900_start_locked(struct lance_softc *sc) 532 { 533 struct ifnet *ifp = sc->sc_ifp; 534 struct letmd tmd; 535 struct mbuf *m; 536 int bix, enq, len, rp; 537 538 LE_LOCK_ASSERT(sc, MA_OWNED); 539 540 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 541 IFF_DRV_RUNNING) 542 return; 543 544 bix = sc->sc_last_td; 545 enq = 0; 546 547 for (; sc->sc_no_td < sc->sc_ntbuf && 548 !IFQ_DRV_IS_EMPTY(&ifp->if_snd);) { 549 rp = LE_TMDADDR(sc, bix); 550 (*sc->sc_copyfromdesc)(sc, &tmd, rp, sizeof(tmd)); 551 552 if (LE_LE32TOH(tmd.tmd1) & LE_T1_OWN) { 553 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 554 if_printf(ifp, 555 "missing buffer, no_td = %d, last_td = %d\n", 556 sc->sc_no_td, sc->sc_last_td); 557 } 558 559 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 560 if (m == 0) 561 break; 562 563 /* 564 * If BPF is listening on this interface, let it see the packet 565 * before we commit it to the wire. 566 */ 567 BPF_MTAP(ifp, m); 568 569 /* 570 * Copy the mbuf chain into the transmit buffer. 571 */ 572 len = lance_put(sc, LE_TBUFADDR(sc, bix), m); 573 574 #ifdef LEDEBUG 575 if (len > ETHERMTU + ETHER_HDR_LEN) 576 if_printf(ifp, "packet length %d\n", len); 577 #endif 578 579 /* 580 * Init transmit registers, and set transmit start flag. 581 */ 582 tmd.tmd1 = LE_HTOLE32(LE_T1_OWN | LE_T1_STP | LE_T1_ENP | 583 LE_T1_ONES | (-len & 0xfff)); 584 tmd.tmd2 = 0; 585 tmd.tmd3 = 0; 586 587 (*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd)); 588 589 #ifdef LEDEBUG 590 if (sc->sc_flags & LE_DEBUG) 591 am79900_xmit_print(sc, bix); 592 #endif 593 594 (*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA | LE_C0_TDMD); 595 enq++; 596 597 if (++bix == sc->sc_ntbuf) 598 bix = 0; 599 600 if (++sc->sc_no_td == sc->sc_ntbuf) { 601 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 602 break; 603 } 604 } 605 606 sc->sc_last_td = bix; 607 608 if (enq > 0) 609 sc->sc_wdog_timer = 5; 610 } 611 612 #ifdef LEDEBUG 613 static void 614 am79900_recv_print(struct lance_softc *sc, int no) 615 { 616 struct ifnet *ifp = sc->sc_ifp; 617 struct ether_header eh; 618 struct lermd rmd; 619 uint16_t len; 620 621 (*sc->sc_copyfromdesc)(sc, &rmd, LE_RMDADDR(sc, no), sizeof(rmd)); 622 len = LE_LE32TOH(rmd.rmd2) & 0xfff; 623 if_printf(ifp, "receive buffer %d, len = %d\n", no, len); 624 if_printf(ifp, "status %04x\n", (*sc->sc_rdcsr)(sc, LE_CSR0)); 625 if_printf(ifp, "adr %08x, flags/blen %08x\n", LE_LE32TOH(rmd.rmd0), 626 LE_LE32TOH(rmd.rmd1)); 627 if (len - ETHER_CRC_LEN >= sizeof(eh)) { 628 (*sc->sc_copyfrombuf)(sc, &eh, LE_RBUFADDR(sc, no), sizeof(eh)); 629 if_printf(ifp, "dst %s", ether_sprintf(eh.ether_dhost)); 630 printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost), 631 ntohs(eh.ether_type)); 632 } 633 } 634 635 static void 636 am79900_xmit_print(struct lance_softc *sc, int no) 637 { 638 struct ifnet *ifp = sc->sc_ifp; 639 struct ether_header eh; 640 struct letmd tmd; 641 uint16_t len; 642 643 (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, no), sizeof(tmd)); 644 len = -(LE_LE32TOH(tmd.tmd1) & 0xfff); 645 if_printf(ifp, "transmit buffer %d, len = %d\n", no, len); 646 if_printf(ifp, "status %04x\n", (*sc->sc_rdcsr)(sc, LE_CSR0)); 647 if_printf(ifp, "adr %08x, flags/blen %08x\n", LE_LE32TOH(tmd.tmd0), 648 LE_LE32TOH(tmd.tmd1)); 649 if (len >= sizeof(eh)) { 650 (*sc->sc_copyfrombuf)(sc, &eh, LE_TBUFADDR(sc, no), sizeof(eh)); 651 if_printf(ifp, "dst %s", ether_sprintf(eh.ether_dhost)); 652 printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost), 653 ntohs(eh.ether_type)); 654 } 655 } 656 #endif /* LEDEBUG */
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