am79900.c revision 1.12
1 /* $NetBSD: am79900.c,v 1.12 2003/08/07 16:30:58 agc Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell and Rick Macklem. 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 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 35 */ 36 37 /*- 38 * Copyright (c) 1998 39 * Matthias Drochner. All rights reserved. 40 * Copyright (c) 1997 Jason R. Thorpe. All rights reserved. 41 * Copyright (c) 1995 Charles M. Hannum. All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Ralph Campbell and Rick Macklem. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 75 */ 76 77 #include <sys/cdefs.h> 78 __KERNEL_RCSID(0, "$NetBSD: am79900.c,v 1.12 2003/08/07 16:30:58 agc Exp $"); 79 80 #include "bpfilter.h" 81 #include "rnd.h" 82 83 #include <sys/param.h> 84 #include <sys/systm.h> 85 #include <sys/mbuf.h> 86 #include <sys/syslog.h> 87 #include <sys/socket.h> 88 #include <sys/device.h> 89 #include <sys/malloc.h> 90 #include <sys/ioctl.h> 91 #include <sys/errno.h> 92 #if NRND > 0 93 #include <sys/rnd.h> 94 #endif 95 96 #include <net/if.h> 97 #include <net/if_dl.h> 98 #include <net/if_ether.h> 99 #include <net/if_media.h> 100 101 #if NBPFILTER > 0 102 #include <net/bpf.h> 103 #include <net/bpfdesc.h> 104 #endif 105 106 #include <dev/ic/lancereg.h> 107 #include <dev/ic/lancevar.h> 108 #include <dev/ic/am79900reg.h> 109 #include <dev/ic/am79900var.h> 110 111 void am79900_meminit __P((struct lance_softc *)); 112 void am79900_start __P((struct ifnet *)); 113 114 #if defined(_KERNEL_OPT) 115 #include "opt_ddb.h" 116 #endif 117 118 #ifdef DDB 119 #define integrate 120 #define hide 121 #else 122 #define integrate static __inline 123 #define hide static 124 #endif 125 126 integrate void am79900_rint __P((struct lance_softc *)); 127 integrate void am79900_tint __P((struct lance_softc *)); 128 129 #ifdef LEDEBUG 130 void am79900_recv_print __P((struct lance_softc *, int)); 131 void am79900_xmit_print __P((struct lance_softc *, int)); 132 #endif 133 134 #define ifp (&sc->sc_ethercom.ec_if) 135 136 void 137 am79900_config(sc) 138 struct am79900_softc *sc; 139 { 140 int mem, i; 141 142 sc->lsc.sc_meminit = am79900_meminit; 143 sc->lsc.sc_start = am79900_start; 144 145 lance_config(&sc->lsc); 146 147 mem = 0; 148 sc->lsc.sc_initaddr = mem; 149 mem += sizeof(struct leinit); 150 sc->lsc.sc_rmdaddr = mem; 151 mem += sizeof(struct lermd) * sc->lsc.sc_nrbuf; 152 sc->lsc.sc_tmdaddr = mem; 153 mem += sizeof(struct letmd) * sc->lsc.sc_ntbuf; 154 for (i = 0; i < sc->lsc.sc_nrbuf; i++, mem += LEBLEN) 155 sc->lsc.sc_rbufaddr[i] = mem; 156 for (i = 0; i < sc->lsc.sc_ntbuf; i++, mem += LEBLEN) 157 sc->lsc.sc_tbufaddr[i] = mem; 158 159 if (mem > sc->lsc.sc_memsize) 160 panic("%s: memsize", sc->lsc.sc_dev.dv_xname); 161 } 162 163 /* 164 * Set up the initialization block and the descriptor rings. 165 */ 166 void 167 am79900_meminit(sc) 168 struct lance_softc *sc; 169 { 170 u_long a; 171 int bix; 172 struct leinit init; 173 struct lermd rmd; 174 struct letmd tmd; 175 u_int8_t *myaddr; 176 177 #if NBPFILTER > 0 178 if (ifp->if_flags & IFF_PROMISC) 179 init.init_mode = LE_MODE_NORMAL | LE_MODE_PROM; 180 else 181 #endif 182 init.init_mode = LE_MODE_NORMAL; 183 if (sc->sc_initmodemedia == 1) 184 init.init_mode |= LE_MODE_PSEL0; 185 186 init.init_mode |= ((ffs(sc->sc_ntbuf) - 1) << 28) 187 | ((ffs(sc->sc_nrbuf) - 1) << 20); 188 189 /* 190 * Update our private copy of the Ethernet address. 191 * We NEED the copy so we can ensure its alignment! 192 */ 193 memcpy(sc->sc_enaddr, LLADDR(ifp->if_sadl), ETHER_ADDR_LEN); 194 myaddr = sc->sc_enaddr; 195 196 init.init_padr[0] = myaddr[0] | (myaddr[1] << 8) 197 | (myaddr[2] << 16) | (myaddr[3] << 24); 198 init.init_padr[1] = myaddr[4] | (myaddr[5] << 8); 199 lance_setladrf(&sc->sc_ethercom, init.init_ladrf); 200 201 sc->sc_last_rd = 0; 202 sc->sc_first_td = sc->sc_last_td = sc->sc_no_td = 0; 203 204 a = sc->sc_addr + LE_RMDADDR(sc, 0); 205 init.init_rdra = a; 206 207 a = sc->sc_addr + LE_TMDADDR(sc, 0); 208 init.init_tdra = a; 209 210 (*sc->sc_copytodesc)(sc, &init, LE_INITADDR(sc), sizeof(init)); 211 212 /* 213 * Set up receive ring descriptors. 214 */ 215 for (bix = 0; bix < sc->sc_nrbuf; bix++) { 216 a = sc->sc_addr + LE_RBUFADDR(sc, bix); 217 rmd.rmd0 = a; 218 rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff); 219 rmd.rmd2 = 0; 220 rmd.rmd3 = 0; 221 (*sc->sc_copytodesc)(sc, &rmd, LE_RMDADDR(sc, bix), 222 sizeof(rmd)); 223 } 224 225 /* 226 * Set up transmit ring descriptors. 227 */ 228 for (bix = 0; bix < sc->sc_ntbuf; bix++) { 229 a = sc->sc_addr + LE_TBUFADDR(sc, bix); 230 tmd.tmd0 = a; 231 tmd.tmd1 = LE_T1_ONES; 232 tmd.tmd2 = 0; 233 tmd.tmd3 = 0; 234 (*sc->sc_copytodesc)(sc, &tmd, LE_TMDADDR(sc, bix), 235 sizeof(tmd)); 236 } 237 } 238 239 integrate void 240 am79900_rint(sc) 241 struct lance_softc *sc; 242 { 243 int bix; 244 int rp; 245 struct lermd rmd; 246 247 bix = sc->sc_last_rd; 248 249 /* Process all buffers with valid data. */ 250 for (;;) { 251 rp = LE_RMDADDR(sc, bix); 252 (*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd)); 253 254 if (rmd.rmd1 & LE_R1_OWN) 255 break; 256 257 if (rmd.rmd1 & LE_R1_ERR) { 258 if (rmd.rmd1 & LE_R1_ENP) { 259 #ifdef LEDEBUG 260 if ((rmd.rmd1 & LE_R1_OFLO) == 0) { 261 if (rmd.rmd1 & LE_R1_FRAM) 262 printf("%s: framing error\n", 263 sc->sc_dev.dv_xname); 264 if (rmd.rmd1 & LE_R1_CRC) 265 printf("%s: crc mismatch\n", 266 sc->sc_dev.dv_xname); 267 } 268 #endif 269 } else { 270 if (rmd.rmd1 & LE_R1_OFLO) 271 printf("%s: overflow\n", 272 sc->sc_dev.dv_xname); 273 } 274 if (rmd.rmd1 & LE_R1_BUFF) 275 printf("%s: receive buffer error\n", 276 sc->sc_dev.dv_xname); 277 ifp->if_ierrors++; 278 } else if ((rmd.rmd1 & (LE_R1_STP | LE_R1_ENP)) != 279 (LE_R1_STP | LE_R1_ENP)) { 280 printf("%s: dropping chained buffer\n", 281 sc->sc_dev.dv_xname); 282 ifp->if_ierrors++; 283 } else { 284 #ifdef LEDEBUG 285 if (sc->sc_debug) 286 am79900_recv_print(sc, sc->sc_last_rd); 287 #endif 288 lance_read(sc, LE_RBUFADDR(sc, bix), 289 (rmd.rmd2 & 0xfff) - 4); 290 } 291 292 rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff); 293 rmd.rmd2 = 0; 294 rmd.rmd3 = 0; 295 (*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd)); 296 297 #ifdef LEDEBUG 298 if (sc->sc_debug) 299 printf("sc->sc_last_rd = %x, rmd: " 300 "adr %08x, flags/blen %08x\n", 301 sc->sc_last_rd, 302 rmd.rmd0, rmd.rmd1); 303 #endif 304 305 if (++bix == sc->sc_nrbuf) 306 bix = 0; 307 } 308 309 sc->sc_last_rd = bix; 310 } 311 312 integrate void 313 am79900_tint(sc) 314 struct lance_softc *sc; 315 { 316 int bix; 317 struct letmd tmd; 318 319 bix = sc->sc_first_td; 320 321 for (;;) { 322 if (sc->sc_no_td <= 0) 323 break; 324 325 (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix), 326 sizeof(tmd)); 327 328 #ifdef LEDEBUG 329 if (sc->sc_debug) 330 printf("trans tmd: " 331 "adr %08x, flags/blen %08x\n", 332 tmd.tmd0, tmd.tmd1); 333 #endif 334 335 if (tmd.tmd1 & LE_T1_OWN) 336 break; 337 338 ifp->if_flags &= ~IFF_OACTIVE; 339 340 if (tmd.tmd1 & LE_T1_ERR) { 341 if (tmd.tmd2 & LE_T2_BUFF) 342 printf("%s: transmit buffer error\n", 343 sc->sc_dev.dv_xname); 344 else if (tmd.tmd2 & LE_T2_UFLO) 345 printf("%s: underflow\n", sc->sc_dev.dv_xname); 346 if (tmd.tmd2 & (LE_T2_BUFF | LE_T2_UFLO)) { 347 lance_reset(sc); 348 return; 349 } 350 if (tmd.tmd2 & LE_T2_LCAR) { 351 sc->sc_havecarrier = 0; 352 if (sc->sc_nocarrier) 353 (*sc->sc_nocarrier)(sc); 354 else 355 printf("%s: lost carrier\n", 356 sc->sc_dev.dv_xname); 357 } 358 if (tmd.tmd2 & LE_T2_LCOL) 359 ifp->if_collisions++; 360 if (tmd.tmd2 & LE_T2_RTRY) { 361 #ifdef LEDEBUG 362 printf("%s: excessive collisions\n", 363 sc->sc_dev.dv_xname); 364 #endif 365 ifp->if_collisions += 16; 366 } 367 ifp->if_oerrors++; 368 } else { 369 if (tmd.tmd1 & LE_T1_ONE) 370 ifp->if_collisions++; 371 else if (tmd.tmd1 & LE_T1_MORE) 372 /* Real number is unknown. */ 373 ifp->if_collisions += 2; 374 ifp->if_opackets++; 375 } 376 377 if (++bix == sc->sc_ntbuf) 378 bix = 0; 379 380 --sc->sc_no_td; 381 } 382 383 sc->sc_first_td = bix; 384 385 am79900_start(ifp); 386 387 if (sc->sc_no_td == 0) 388 ifp->if_timer = 0; 389 } 390 391 /* 392 * Controller interrupt. 393 */ 394 int 395 am79900_intr(arg) 396 void *arg; 397 { 398 struct lance_softc *sc = arg; 399 u_int16_t isr; 400 401 isr = (*sc->sc_rdcsr)(sc, LE_CSR0) | sc->sc_saved_csr0; 402 sc->sc_saved_csr0 = 0; 403 #if defined(LEDEBUG) && LEDEBUG > 1 404 if (sc->sc_debug) 405 printf("%s: am79900_intr entering with isr=%04x\n", 406 sc->sc_dev.dv_xname, isr); 407 #endif 408 if ((isr & LE_C0_INTR) == 0) 409 return (0); 410 411 (*sc->sc_wrcsr)(sc, LE_CSR0, 412 isr & (LE_C0_INEA | LE_C0_BABL | LE_C0_MISS | LE_C0_MERR | 413 LE_C0_RINT | LE_C0_TINT | LE_C0_IDON)); 414 if (isr & LE_C0_ERR) { 415 if (isr & LE_C0_BABL) { 416 #ifdef LEDEBUG 417 printf("%s: babble\n", sc->sc_dev.dv_xname); 418 #endif 419 ifp->if_oerrors++; 420 } 421 #if 0 422 if (isr & LE_C0_CERR) { 423 printf("%s: collision error\n", sc->sc_dev.dv_xname); 424 ifp->if_collisions++; 425 } 426 #endif 427 if (isr & LE_C0_MISS) { 428 #ifdef LEDEBUG 429 printf("%s: missed packet\n", sc->sc_dev.dv_xname); 430 #endif 431 ifp->if_ierrors++; 432 } 433 if (isr & LE_C0_MERR) { 434 printf("%s: memory error\n", sc->sc_dev.dv_xname); 435 lance_reset(sc); 436 return (1); 437 } 438 } 439 440 if ((isr & LE_C0_RXON) == 0) { 441 printf("%s: receiver disabled\n", sc->sc_dev.dv_xname); 442 ifp->if_ierrors++; 443 lance_reset(sc); 444 return (1); 445 } 446 if ((isr & LE_C0_TXON) == 0) { 447 printf("%s: transmitter disabled\n", sc->sc_dev.dv_xname); 448 ifp->if_oerrors++; 449 lance_reset(sc); 450 return (1); 451 } 452 453 /* 454 * Pretend we have carrier; if we don't this will be cleared 455 * shortly. 456 */ 457 sc->sc_havecarrier = 1; 458 459 if (isr & LE_C0_RINT) 460 am79900_rint(sc); 461 if (isr & LE_C0_TINT) 462 am79900_tint(sc); 463 464 #if NRND > 0 465 rnd_add_uint32(&sc->rnd_source, isr); 466 #endif 467 468 return (1); 469 } 470 471 #undef ifp 472 473 /* 474 * Setup output on interface. 475 * Get another datagram to send off of the interface queue, and map it to the 476 * interface before starting the output. 477 * Called only at splnet or interrupt level. 478 */ 479 void 480 am79900_start(ifp) 481 struct ifnet *ifp; 482 { 483 struct lance_softc *sc = ifp->if_softc; 484 int bix; 485 struct mbuf *m; 486 struct letmd tmd; 487 int rp; 488 int len; 489 490 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 491 return; 492 493 bix = sc->sc_last_td; 494 495 for (;;) { 496 rp = LE_TMDADDR(sc, bix); 497 (*sc->sc_copyfromdesc)(sc, &tmd, rp, sizeof(tmd)); 498 499 if (tmd.tmd1 & LE_T1_OWN) { 500 ifp->if_flags |= IFF_OACTIVE; 501 printf("missing buffer, no_td = %d, last_td = %d\n", 502 sc->sc_no_td, sc->sc_last_td); 503 } 504 505 IFQ_DEQUEUE(&ifp->if_snd, m); 506 if (m == 0) 507 break; 508 509 #if NBPFILTER > 0 510 /* 511 * If BPF is listening on this interface, let it see the packet 512 * before we commit it to the wire. 513 */ 514 if (ifp->if_bpf) 515 bpf_mtap(ifp->if_bpf, m); 516 #endif 517 518 /* 519 * Copy the mbuf chain into the transmit buffer. 520 */ 521 len = lance_put(sc, LE_TBUFADDR(sc, bix), m); 522 523 #ifdef LEDEBUG 524 if (len > ETHERMTU + sizeof(struct ether_header)) 525 printf("packet length %d\n", len); 526 #endif 527 528 ifp->if_timer = 5; 529 530 /* 531 * Init transmit registers, and set transmit start flag. 532 */ 533 tmd.tmd1 = LE_T1_OWN | LE_T1_STP | LE_T1_ENP | LE_T1_ONES | (-len & 0xfff); 534 tmd.tmd2 = 0; 535 tmd.tmd3 = 0; 536 537 (*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd)); 538 539 #ifdef LEDEBUG 540 if (sc->sc_debug) 541 am79900_xmit_print(sc, sc->sc_last_td); 542 #endif 543 544 (*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA | LE_C0_TDMD); 545 546 if (++bix == sc->sc_ntbuf) 547 bix = 0; 548 549 if (++sc->sc_no_td == sc->sc_ntbuf) { 550 ifp->if_flags |= IFF_OACTIVE; 551 break; 552 } 553 554 } 555 556 sc->sc_last_td = bix; 557 } 558 559 #ifdef LEDEBUG 560 void 561 am79900_recv_print(sc, no) 562 struct lance_softc *sc; 563 int no; 564 { 565 struct lermd rmd; 566 u_int16_t len; 567 struct ether_header eh; 568 569 (*sc->sc_copyfromdesc)(sc, &rmd, LE_RMDADDR(sc, no), sizeof(rmd)); 570 len = (rmd.rmd2 & 0xfff) - 4; 571 printf("%s: receive buffer %d, len = %d\n", sc->sc_dev.dv_xname, no, 572 len); 573 printf("%s: status %04x\n", sc->sc_dev.dv_xname, 574 (*sc->sc_rdcsr)(sc, LE_CSR0)); 575 printf("%s: adr %08x, flags/blen %08x\n", 576 sc->sc_dev.dv_xname, rmd.rmd0, rmd.rmd1); 577 if (len >= sizeof(eh)) { 578 (*sc->sc_copyfrombuf)(sc, &eh, LE_RBUFADDR(sc, no), sizeof(eh)); 579 printf("%s: dst %s", sc->sc_dev.dv_xname, 580 ether_sprintf(eh.ether_dhost)); 581 printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost), 582 ntohs(eh.ether_type)); 583 } 584 } 585 586 void 587 am79900_xmit_print(sc, no) 588 struct lance_softc *sc; 589 int no; 590 { 591 struct letmd tmd; 592 u_int16_t len; 593 struct ether_header eh; 594 595 (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, no), sizeof(tmd)); 596 len = -(tmd.tmd1 & 0xfff); 597 printf("%s: transmit buffer %d, len = %d\n", sc->sc_dev.dv_xname, no, 598 len); 599 printf("%s: status %04x\n", sc->sc_dev.dv_xname, 600 (*sc->sc_rdcsr)(sc, LE_CSR0)); 601 printf("%s: adr %08x, flags/blen %08x\n", 602 sc->sc_dev.dv_xname, tmd.tmd0, tmd.tmd1); 603 if (len >= sizeof(eh)) { 604 (*sc->sc_copyfrombuf)(sc, &eh, LE_TBUFADDR(sc, no), sizeof(eh)); 605 printf("%s: dst %s", sc->sc_dev.dv_xname, 606 ether_sprintf(eh.ether_dhost)); 607 printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost), 608 ntohs(eh.ether_type)); 609 } 610 } 611 #endif /* LEDEBUG */ 612
Indexes created Fri Sep 26 08:10:20 GMT 2025