am79900.c revision 1.8.2.3
1 /* $NetBSD: am79900.c,v 1.8.2.3 2001/11/14 19:14:16 nathanw Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 5 * Matthias Drochner. All rights reserved. 6 * Copyright (c) 1997 Jason R. Thorpe. All rights reserved. 7 * Copyright (c) 1995 Charles M. Hannum. All rights reserved. 8 * Copyright (c) 1992, 1993 9 * The Regents of the University of California. All rights reserved. 10 * 11 * This code is derived from software contributed to Berkeley by 12 * Ralph Campbell and Rick Macklem. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by the University of 25 * California, Berkeley and its contributors. 26 * 4. Neither the name of the University nor the names of its contributors 27 * may be used to endorse or promote products derived from this software 28 * without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 40 * SUCH DAMAGE. 41 * 42 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 43 */ 44 45 #include <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: am79900.c,v 1.8.2.3 2001/11/14 19:14:16 nathanw Exp $"); 47 48 #include "bpfilter.h" 49 #include "rnd.h" 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/mbuf.h> 54 #include <sys/syslog.h> 55 #include <sys/socket.h> 56 #include <sys/device.h> 57 #include <sys/malloc.h> 58 #include <sys/ioctl.h> 59 #include <sys/errno.h> 60 #if NRND > 0 61 #include <sys/rnd.h> 62 #endif 63 64 #include <net/if.h> 65 #include <net/if_dl.h> 66 #include <net/if_ether.h> 67 #include <net/if_media.h> 68 69 #if NBPFILTER > 0 70 #include <net/bpf.h> 71 #include <net/bpfdesc.h> 72 #endif 73 74 #include <dev/ic/lancereg.h> 75 #include <dev/ic/lancevar.h> 76 #include <dev/ic/am79900reg.h> 77 #include <dev/ic/am79900var.h> 78 79 void am79900_meminit __P((struct lance_softc *)); 80 void am79900_start __P((struct ifnet *)); 81 82 #if defined(_KERNEL_OPT) 83 #include "opt_ddb.h" 84 #endif 85 86 #ifdef DDB 87 #define integrate 88 #define hide 89 #else 90 #define integrate static __inline 91 #define hide static 92 #endif 93 94 integrate void am79900_rint __P((struct lance_softc *)); 95 integrate void am79900_tint __P((struct lance_softc *)); 96 97 #ifdef LEDEBUG 98 void am79900_recv_print __P((struct lance_softc *, int)); 99 void am79900_xmit_print __P((struct lance_softc *, int)); 100 #endif 101 102 #define ifp (&sc->sc_ethercom.ec_if) 103 104 void 105 am79900_config(sc) 106 struct am79900_softc *sc; 107 { 108 int mem, i; 109 110 sc->lsc.sc_meminit = am79900_meminit; 111 sc->lsc.sc_start = am79900_start; 112 113 lance_config(&sc->lsc); 114 115 mem = 0; 116 sc->lsc.sc_initaddr = mem; 117 mem += sizeof(struct leinit); 118 sc->lsc.sc_rmdaddr = mem; 119 mem += sizeof(struct lermd) * sc->lsc.sc_nrbuf; 120 sc->lsc.sc_tmdaddr = mem; 121 mem += sizeof(struct letmd) * sc->lsc.sc_ntbuf; 122 for (i = 0; i < sc->lsc.sc_nrbuf; i++, mem += LEBLEN) 123 sc->lsc.sc_rbufaddr[i] = mem; 124 for (i = 0; i < sc->lsc.sc_ntbuf; i++, mem += LEBLEN) 125 sc->lsc.sc_tbufaddr[i] = mem; 126 127 if (mem > sc->lsc.sc_memsize) 128 panic("%s: memsize", sc->lsc.sc_dev.dv_xname); 129 } 130 131 /* 132 * Set up the initialization block and the descriptor rings. 133 */ 134 void 135 am79900_meminit(sc) 136 struct lance_softc *sc; 137 { 138 u_long a; 139 int bix; 140 struct leinit init; 141 struct lermd rmd; 142 struct letmd tmd; 143 u_int8_t *myaddr; 144 145 #if NBPFILTER > 0 146 if (ifp->if_flags & IFF_PROMISC) 147 init.init_mode = LE_MODE_NORMAL | LE_MODE_PROM; 148 else 149 #endif 150 init.init_mode = LE_MODE_NORMAL; 151 if (sc->sc_initmodemedia == 1) 152 init.init_mode |= LE_MODE_PSEL0; 153 154 init.init_mode |= ((ffs(sc->sc_ntbuf) - 1) << 28) 155 | ((ffs(sc->sc_nrbuf) - 1) << 20); 156 157 /* 158 * Update our private copy of the Ethernet address. 159 * We NEED the copy so we can ensure its alignment! 160 */ 161 memcpy(sc->sc_enaddr, LLADDR(ifp->if_sadl), ETHER_ADDR_LEN); 162 myaddr = sc->sc_enaddr; 163 164 init.init_padr[0] = myaddr[0] | (myaddr[1] << 8) 165 | (myaddr[2] << 16) | (myaddr[3] << 24); 166 init.init_padr[1] = myaddr[4] | (myaddr[5] << 8); 167 lance_setladrf(&sc->sc_ethercom, init.init_ladrf); 168 169 sc->sc_last_rd = 0; 170 sc->sc_first_td = sc->sc_last_td = sc->sc_no_td = 0; 171 172 a = sc->sc_addr + LE_RMDADDR(sc, 0); 173 init.init_rdra = a; 174 175 a = sc->sc_addr + LE_TMDADDR(sc, 0); 176 init.init_tdra = a; 177 178 (*sc->sc_copytodesc)(sc, &init, LE_INITADDR(sc), sizeof(init)); 179 180 /* 181 * Set up receive ring descriptors. 182 */ 183 for (bix = 0; bix < sc->sc_nrbuf; bix++) { 184 a = sc->sc_addr + LE_RBUFADDR(sc, bix); 185 rmd.rmd0 = a; 186 rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff); 187 rmd.rmd2 = 0; 188 rmd.rmd3 = 0; 189 (*sc->sc_copytodesc)(sc, &rmd, LE_RMDADDR(sc, bix), 190 sizeof(rmd)); 191 } 192 193 /* 194 * Set up transmit ring descriptors. 195 */ 196 for (bix = 0; bix < sc->sc_ntbuf; bix++) { 197 a = sc->sc_addr + LE_TBUFADDR(sc, bix); 198 tmd.tmd0 = a; 199 tmd.tmd1 = LE_T1_ONES; 200 tmd.tmd2 = 0; 201 tmd.tmd3 = 0; 202 (*sc->sc_copytodesc)(sc, &tmd, LE_TMDADDR(sc, bix), 203 sizeof(tmd)); 204 } 205 } 206 207 integrate void 208 am79900_rint(sc) 209 struct lance_softc *sc; 210 { 211 int bix; 212 int rp; 213 struct lermd rmd; 214 215 bix = sc->sc_last_rd; 216 217 /* Process all buffers with valid data. */ 218 for (;;) { 219 rp = LE_RMDADDR(sc, bix); 220 (*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd)); 221 222 if (rmd.rmd1 & LE_R1_OWN) 223 break; 224 225 if (rmd.rmd1 & LE_R1_ERR) { 226 if (rmd.rmd1 & LE_R1_ENP) { 227 #ifdef LEDEBUG 228 if ((rmd.rmd1 & LE_R1_OFLO) == 0) { 229 if (rmd.rmd1 & LE_R1_FRAM) 230 printf("%s: framing error\n", 231 sc->sc_dev.dv_xname); 232 if (rmd.rmd1 & LE_R1_CRC) 233 printf("%s: crc mismatch\n", 234 sc->sc_dev.dv_xname); 235 } 236 #endif 237 } else { 238 if (rmd.rmd1 & LE_R1_OFLO) 239 printf("%s: overflow\n", 240 sc->sc_dev.dv_xname); 241 } 242 if (rmd.rmd1 & LE_R1_BUFF) 243 printf("%s: receive buffer error\n", 244 sc->sc_dev.dv_xname); 245 ifp->if_ierrors++; 246 } else if ((rmd.rmd1 & (LE_R1_STP | LE_R1_ENP)) != 247 (LE_R1_STP | LE_R1_ENP)) { 248 printf("%s: dropping chained buffer\n", 249 sc->sc_dev.dv_xname); 250 ifp->if_ierrors++; 251 } else { 252 #ifdef LEDEBUG 253 if (sc->sc_debug) 254 am79900_recv_print(sc, sc->sc_last_rd); 255 #endif 256 lance_read(sc, LE_RBUFADDR(sc, bix), 257 (rmd.rmd2 & 0xfff) - 4); 258 } 259 260 rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff); 261 rmd.rmd2 = 0; 262 rmd.rmd3 = 0; 263 (*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd)); 264 265 #ifdef LEDEBUG 266 if (sc->sc_debug) 267 printf("sc->sc_last_rd = %x, rmd: " 268 "adr %08x, flags/blen %08x\n", 269 sc->sc_last_rd, 270 rmd.rmd0, rmd.rmd1); 271 #endif 272 273 if (++bix == sc->sc_nrbuf) 274 bix = 0; 275 } 276 277 sc->sc_last_rd = bix; 278 } 279 280 integrate void 281 am79900_tint(sc) 282 struct lance_softc *sc; 283 { 284 int bix; 285 struct letmd tmd; 286 287 bix = sc->sc_first_td; 288 289 for (;;) { 290 if (sc->sc_no_td <= 0) 291 break; 292 293 (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix), 294 sizeof(tmd)); 295 296 #ifdef LEDEBUG 297 if (sc->sc_debug) 298 printf("trans tmd: " 299 "adr %08x, flags/blen %08x\n", 300 tmd.tmd0, tmd.tmd1); 301 #endif 302 303 if (tmd.tmd1 & LE_T1_OWN) 304 break; 305 306 ifp->if_flags &= ~IFF_OACTIVE; 307 308 if (tmd.tmd1 & LE_T1_ERR) { 309 if (tmd.tmd2 & LE_T2_BUFF) 310 printf("%s: transmit buffer error\n", 311 sc->sc_dev.dv_xname); 312 else if (tmd.tmd2 & LE_T2_UFLO) 313 printf("%s: underflow\n", sc->sc_dev.dv_xname); 314 if (tmd.tmd2 & (LE_T2_BUFF | LE_T2_UFLO)) { 315 lance_reset(sc); 316 return; 317 } 318 if (tmd.tmd2 & LE_T2_LCAR) { 319 sc->sc_havecarrier = 0; 320 if (sc->sc_nocarrier) 321 (*sc->sc_nocarrier)(sc); 322 else 323 printf("%s: lost carrier\n", 324 sc->sc_dev.dv_xname); 325 } 326 if (tmd.tmd2 & LE_T2_LCOL) 327 ifp->if_collisions++; 328 if (tmd.tmd2 & LE_T2_RTRY) { 329 #ifdef LEDEBUG 330 printf("%s: excessive collisions\n", 331 sc->sc_dev.dv_xname); 332 #endif 333 ifp->if_collisions += 16; 334 } 335 ifp->if_oerrors++; 336 } else { 337 if (tmd.tmd1 & LE_T1_ONE) 338 ifp->if_collisions++; 339 else if (tmd.tmd1 & LE_T1_MORE) 340 /* Real number is unknown. */ 341 ifp->if_collisions += 2; 342 ifp->if_opackets++; 343 } 344 345 if (++bix == sc->sc_ntbuf) 346 bix = 0; 347 348 --sc->sc_no_td; 349 } 350 351 sc->sc_first_td = bix; 352 353 am79900_start(ifp); 354 355 if (sc->sc_no_td == 0) 356 ifp->if_timer = 0; 357 } 358 359 /* 360 * Controller interrupt. 361 */ 362 int 363 am79900_intr(arg) 364 void *arg; 365 { 366 struct lance_softc *sc = arg; 367 u_int16_t isr; 368 369 isr = (*sc->sc_rdcsr)(sc, LE_CSR0) | sc->sc_saved_csr0; 370 sc->sc_saved_csr0 = 0; 371 #if defined(LEDEBUG) && LEDEBUG > 1 372 if (sc->sc_debug) 373 printf("%s: am79900_intr entering with isr=%04x\n", 374 sc->sc_dev.dv_xname, isr); 375 #endif 376 if ((isr & LE_C0_INTR) == 0) 377 return (0); 378 379 (*sc->sc_wrcsr)(sc, LE_CSR0, 380 isr & (LE_C0_INEA | LE_C0_BABL | LE_C0_MISS | LE_C0_MERR | 381 LE_C0_RINT | LE_C0_TINT | LE_C0_IDON)); 382 if (isr & LE_C0_ERR) { 383 if (isr & LE_C0_BABL) { 384 #ifdef LEDEBUG 385 printf("%s: babble\n", sc->sc_dev.dv_xname); 386 #endif 387 ifp->if_oerrors++; 388 } 389 #if 0 390 if (isr & LE_C0_CERR) { 391 printf("%s: collision error\n", sc->sc_dev.dv_xname); 392 ifp->if_collisions++; 393 } 394 #endif 395 if (isr & LE_C0_MISS) { 396 #ifdef LEDEBUG 397 printf("%s: missed packet\n", sc->sc_dev.dv_xname); 398 #endif 399 ifp->if_ierrors++; 400 } 401 if (isr & LE_C0_MERR) { 402 printf("%s: memory error\n", sc->sc_dev.dv_xname); 403 lance_reset(sc); 404 return (1); 405 } 406 } 407 408 if ((isr & LE_C0_RXON) == 0) { 409 printf("%s: receiver disabled\n", sc->sc_dev.dv_xname); 410 ifp->if_ierrors++; 411 lance_reset(sc); 412 return (1); 413 } 414 if ((isr & LE_C0_TXON) == 0) { 415 printf("%s: transmitter disabled\n", sc->sc_dev.dv_xname); 416 ifp->if_oerrors++; 417 lance_reset(sc); 418 return (1); 419 } 420 421 /* 422 * Pretend we have carrier; if we don't this will be cleared 423 * shortly. 424 */ 425 sc->sc_havecarrier = 1; 426 427 if (isr & LE_C0_RINT) 428 am79900_rint(sc); 429 if (isr & LE_C0_TINT) 430 am79900_tint(sc); 431 432 #if NRND > 0 433 rnd_add_uint32(&sc->rnd_source, isr); 434 #endif 435 436 return (1); 437 } 438 439 #undef ifp 440 441 /* 442 * Setup output on interface. 443 * Get another datagram to send off of the interface queue, and map it to the 444 * interface before starting the output. 445 * Called only at splnet or interrupt level. 446 */ 447 void 448 am79900_start(ifp) 449 struct ifnet *ifp; 450 { 451 struct lance_softc *sc = ifp->if_softc; 452 int bix; 453 struct mbuf *m; 454 struct letmd tmd; 455 int rp; 456 int len; 457 458 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 459 return; 460 461 bix = sc->sc_last_td; 462 463 for (;;) { 464 rp = LE_TMDADDR(sc, bix); 465 (*sc->sc_copyfromdesc)(sc, &tmd, rp, sizeof(tmd)); 466 467 if (tmd.tmd1 & LE_T1_OWN) { 468 ifp->if_flags |= IFF_OACTIVE; 469 printf("missing buffer, no_td = %d, last_td = %d\n", 470 sc->sc_no_td, sc->sc_last_td); 471 } 472 473 IFQ_DEQUEUE(&ifp->if_snd, m); 474 if (m == 0) 475 break; 476 477 #if NBPFILTER > 0 478 /* 479 * If BPF is listening on this interface, let it see the packet 480 * before we commit it to the wire. 481 */ 482 if (ifp->if_bpf) 483 bpf_mtap(ifp->if_bpf, m); 484 #endif 485 486 /* 487 * Copy the mbuf chain into the transmit buffer. 488 */ 489 len = lance_put(sc, LE_TBUFADDR(sc, bix), m); 490 491 #ifdef LEDEBUG 492 if (len > ETHERMTU + sizeof(struct ether_header)) 493 printf("packet length %d\n", len); 494 #endif 495 496 ifp->if_timer = 5; 497 498 /* 499 * Init transmit registers, and set transmit start flag. 500 */ 501 tmd.tmd1 = LE_T1_OWN | LE_T1_STP | LE_T1_ENP | LE_T1_ONES | (-len & 0xfff); 502 tmd.tmd2 = 0; 503 tmd.tmd3 = 0; 504 505 (*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd)); 506 507 #ifdef LEDEBUG 508 if (sc->sc_debug) 509 am79900_xmit_print(sc, sc->sc_last_td); 510 #endif 511 512 (*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA | LE_C0_TDMD); 513 514 if (++bix == sc->sc_ntbuf) 515 bix = 0; 516 517 if (++sc->sc_no_td == sc->sc_ntbuf) { 518 ifp->if_flags |= IFF_OACTIVE; 519 break; 520 } 521 522 } 523 524 sc->sc_last_td = bix; 525 } 526 527 #ifdef LEDEBUG 528 void 529 am79900_recv_print(sc, no) 530 struct lance_softc *sc; 531 int no; 532 { 533 struct lermd rmd; 534 u_int16_t len; 535 struct ether_header eh; 536 537 (*sc->sc_copyfromdesc)(sc, &rmd, LE_RMDADDR(sc, no), sizeof(rmd)); 538 len = (rmd.rmd2 & 0xfff) - 4; 539 printf("%s: receive buffer %d, len = %d\n", sc->sc_dev.dv_xname, no, 540 len); 541 printf("%s: status %04x\n", sc->sc_dev.dv_xname, 542 (*sc->sc_rdcsr)(sc, LE_CSR0)); 543 printf("%s: adr %08x, flags/blen %08x\n", 544 sc->sc_dev.dv_xname, rmd.rmd0, rmd.rmd1); 545 if (len >= sizeof(eh)) { 546 (*sc->sc_copyfrombuf)(sc, &eh, LE_RBUFADDR(sc, no), sizeof(eh)); 547 printf("%s: dst %s", sc->sc_dev.dv_xname, 548 ether_sprintf(eh.ether_dhost)); 549 printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost), 550 ntohs(eh.ether_type)); 551 } 552 } 553 554 void 555 am79900_xmit_print(sc, no) 556 struct lance_softc *sc; 557 int no; 558 { 559 struct letmd tmd; 560 u_int16_t len; 561 struct ether_header eh; 562 563 (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, no), sizeof(tmd)); 564 len = -(tmd.tmd1 & 0xfff); 565 printf("%s: transmit buffer %d, len = %d\n", sc->sc_dev.dv_xname, no, 566 len); 567 printf("%s: status %04x\n", sc->sc_dev.dv_xname, 568 (*sc->sc_rdcsr)(sc, LE_CSR0)); 569 printf("%s: adr %08x, flags/blen %08x\n", 570 sc->sc_dev.dv_xname, tmd.tmd0, tmd.tmd1); 571 if (len >= sizeof(eh)) { 572 (*sc->sc_copyfrombuf)(sc, &eh, LE_TBUFADDR(sc, no), sizeof(eh)); 573 printf("%s: dst %s", sc->sc_dev.dv_xname, 574 ether_sprintf(eh.ether_dhost)); 575 printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost), 576 ntohs(eh.ether_type)); 577 } 578 } 579 #endif /* LEDEBUG */ 580
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