if_eg.c revision 1.48
1 /* $NetBSD: if_eg.c,v 1.48 1999/08/25 22:46:16 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1993 Dean Huxley <dean (at) fsa.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Dean Huxley. 18 * 4. The name of Dean Huxley may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 /* 33 * Support for 3Com 3c505 Etherlink+ card. 34 */ 35 36 /* To do: 37 * - multicast 38 * - promiscuous 39 * - get rid of isa indirect stuff 40 */ 41 #include "opt_inet.h" 42 #include "opt_ns.h" 43 #include "bpfilter.h" 44 #include "rnd.h" 45 46 #include <sys/types.h> 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/mbuf.h> 50 #include <sys/socket.h> 51 #include <sys/ioctl.h> 52 #include <sys/errno.h> 53 #include <sys/syslog.h> 54 #include <sys/select.h> 55 #include <sys/device.h> 56 #if NRND > 0 57 #include <sys/rnd.h> 58 #endif 59 60 #include <net/if.h> 61 #include <net/if_dl.h> 62 #include <net/if_types.h> 63 64 #include <net/if_ether.h> 65 66 #ifdef INET 67 #include <netinet/in.h> 68 #include <netinet/in_systm.h> 69 #include <netinet/in_var.h> 70 #include <netinet/ip.h> 71 #include <netinet/if_inarp.h> 72 #endif 73 74 #ifdef NS 75 #include <netns/ns.h> 76 #include <netns/ns_if.h> 77 #endif 78 79 #if NBPFILTER > 0 80 #include <net/bpf.h> 81 #include <net/bpfdesc.h> 82 #endif 83 84 #include <machine/cpu.h> 85 #include <machine/intr.h> 86 #include <machine/bus.h> 87 88 #include <dev/isa/isavar.h> 89 #include <dev/isa/if_egreg.h> 90 #include <dev/isa/elink.h> 91 92 /* for debugging convenience */ 93 #ifdef EGDEBUG 94 #define DPRINTF(x) printf x 95 #else 96 #define DPRINTF(x) 97 #endif 98 99 #define EG_INLEN 10 100 #define EG_BUFLEN 0x0670 101 102 #define EG_PCBLEN 64 103 104 /* 105 * Ethernet software status per interface. 106 */ 107 struct eg_softc { 108 struct device sc_dev; 109 void *sc_ih; 110 struct ethercom sc_ethercom; /* Ethernet common part */ 111 bus_space_tag_t sc_iot; /* bus space identifier */ 112 bus_space_handle_t sc_ioh; /* i/o handle */ 113 u_int8_t eg_rom_major; /* Cards ROM version (major number) */ 114 u_int8_t eg_rom_minor; /* Cards ROM version (minor number) */ 115 short eg_ram; /* Amount of RAM on the card */ 116 u_int8_t eg_pcb[EG_PCBLEN]; /* Primary Command Block buffer */ 117 u_int8_t eg_incount; /* Number of buffers currently used */ 118 caddr_t eg_inbuf; /* Incoming packet buffer */ 119 caddr_t eg_outbuf; /* Outgoing packet buffer */ 120 121 #if NRND > 0 122 rndsource_element_t rnd_source; 123 #endif 124 }; 125 126 int egprobe __P((struct device *, struct cfdata *, void *)); 127 void egattach __P((struct device *, struct device *, void *)); 128 129 struct cfattach eg_ca = { 130 sizeof(struct eg_softc), egprobe, egattach 131 }; 132 133 int egintr __P((void *)); 134 void eginit __P((struct eg_softc *)); 135 int egioctl __P((struct ifnet *, u_long, caddr_t)); 136 void egrecv __P((struct eg_softc *)); 137 void egstart __P((struct ifnet *)); 138 void egwatchdog __P((struct ifnet *)); 139 void egreset __P((struct eg_softc *)); 140 void egread __P((struct eg_softc *, caddr_t, int)); 141 struct mbuf *egget __P((struct eg_softc *, caddr_t, int)); 142 void egstop __P((struct eg_softc *)); 143 144 static inline void egprintpcb __P((u_int8_t *)); 145 static inline void egprintstat __P((u_char)); 146 static int egoutPCB __P((bus_space_tag_t, bus_space_handle_t, u_int8_t)); 147 static int egreadPCBstat __P((bus_space_tag_t, bus_space_handle_t, u_int8_t)); 148 static int egreadPCBready __P((bus_space_tag_t, bus_space_handle_t)); 149 static int egwritePCB __P((bus_space_tag_t, bus_space_handle_t, u_int8_t *)); 150 static int egreadPCB __P((bus_space_tag_t, bus_space_handle_t, u_int8_t *)); 151 152 /* 153 * Support stuff 154 */ 155 156 static inline void 157 egprintpcb(pcb) 158 u_int8_t *pcb; 159 { 160 int i; 161 162 for (i = 0; i < pcb[1] + 2; i++) 163 DPRINTF(("pcb[%2d] = %x\n", i, pcb[i])); 164 } 165 166 167 static inline void 168 egprintstat(b) 169 u_char b; 170 { 171 DPRINTF(("%s %s %s %s %s %s %s\n", 172 (b & EG_STAT_HCRE)?"HCRE":"", 173 (b & EG_STAT_ACRF)?"ACRF":"", 174 (b & EG_STAT_DIR )?"DIR ":"", 175 (b & EG_STAT_DONE)?"DONE":"", 176 (b & EG_STAT_ASF3)?"ASF3":"", 177 (b & EG_STAT_ASF2)?"ASF2":"", 178 (b & EG_STAT_ASF1)?"ASF1":"")); 179 } 180 181 static int 182 egoutPCB(iot, ioh, b) 183 bus_space_tag_t iot; 184 bus_space_handle_t ioh; 185 u_int8_t b; 186 { 187 int i; 188 189 for (i=0; i < 4000; i++) { 190 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) { 191 bus_space_write_1(iot, ioh, EG_COMMAND, b); 192 return 0; 193 } 194 delay(10); 195 } 196 DPRINTF(("egoutPCB failed\n")); 197 return 1; 198 } 199 200 static int 201 egreadPCBstat(iot, ioh, statb) 202 bus_space_tag_t iot; 203 bus_space_handle_t ioh; 204 u_int8_t statb; 205 { 206 int i; 207 208 for (i=0; i < 5000; i++) { 209 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 210 EG_PCB_STAT) != EG_PCB_NULL) 211 break; 212 delay(10); 213 } 214 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) == statb) 215 return 0; 216 return 1; 217 } 218 219 static int 220 egreadPCBready(iot, ioh) 221 bus_space_tag_t iot; 222 bus_space_handle_t ioh; 223 { 224 int i; 225 226 for (i=0; i < 10000; i++) { 227 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) 228 return 0; 229 delay(5); 230 } 231 DPRINTF(("PCB read not ready\n")); 232 return 1; 233 } 234 235 static int 236 egwritePCB(iot, ioh, pcb) 237 bus_space_tag_t iot; 238 bus_space_handle_t ioh; 239 u_int8_t *pcb; 240 { 241 int i; 242 u_int8_t len; 243 244 bus_space_write_1(iot, ioh, EG_CONTROL, 245 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 246 247 len = pcb[1] + 2; 248 for (i = 0; i < len; i++) 249 egoutPCB(iot, ioh, pcb[i]); 250 251 for (i=0; i < 4000; i++) { 252 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) 253 break; 254 delay(10); 255 } 256 257 bus_space_write_1(iot, ioh, EG_CONTROL, 258 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_DONE); 259 260 egoutPCB(iot, ioh, len); 261 262 if (egreadPCBstat(iot, ioh, EG_PCB_ACCEPT)) 263 return 1; 264 return 0; 265 } 266 267 static int 268 egreadPCB(iot, ioh, pcb) 269 bus_space_tag_t iot; 270 bus_space_handle_t ioh; 271 u_int8_t *pcb; 272 { 273 int i; 274 u_int8_t b; 275 276 bus_space_write_1(iot, ioh, EG_CONTROL, 277 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 278 279 bzero(pcb, EG_PCBLEN); 280 281 if (egreadPCBready(iot, ioh)) 282 return 1; 283 284 pcb[0] = bus_space_read_1(iot, ioh, EG_COMMAND); 285 286 if (egreadPCBready(iot, ioh)) 287 return 1; 288 289 pcb[1] = bus_space_read_1(iot, ioh, EG_COMMAND); 290 291 if (pcb[1] > 62) { 292 DPRINTF(("len %d too large\n", pcb[1])); 293 return 1; 294 } 295 296 for (i = 0; i < pcb[1]; i++) { 297 if (egreadPCBready(iot, ioh)) 298 return 1; 299 pcb[2+i] = bus_space_read_1(iot, ioh, EG_COMMAND); 300 } 301 if (egreadPCBready(iot, ioh)) 302 return 1; 303 if (egreadPCBstat(iot, ioh, EG_PCB_DONE)) 304 return 1; 305 if ((b = bus_space_read_1(iot, ioh, EG_COMMAND)) != pcb[1] + 2) { 306 DPRINTF(("%d != %d\n", b, pcb[1] + 2)); 307 return 1; 308 } 309 310 bus_space_write_1(iot, ioh, EG_CONTROL, 311 (bus_space_read_1(iot, ioh, EG_CONTROL) & 312 ~EG_PCB_STAT) | EG_PCB_ACCEPT); 313 314 return 0; 315 } 316 317 /* 318 * Real stuff 319 */ 320 321 int 322 egprobe(parent, match, aux) 323 struct device *parent; 324 struct cfdata *match; 325 void *aux; 326 { 327 struct isa_attach_args *ia = aux; 328 bus_space_tag_t iot = ia->ia_iot; 329 bus_space_handle_t ioh; 330 int i, rval; 331 static u_int8_t pcb[EG_PCBLEN]; 332 333 rval = 0; 334 335 if ((ia->ia_iobase & ~0x07f0) != 0) { 336 DPRINTF(("Weird iobase %x\n", ia->ia_iobase)); 337 return 0; 338 } 339 340 /* Disallow wildcarded i/o address. */ 341 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 342 return (0); 343 344 /* Map i/o space. */ 345 if (bus_space_map(iot, ia->ia_iobase, 0x08, 0, &ioh)) { 346 DPRINTF(("egprobe: can't map i/o space in probe\n")); 347 return 0; 348 } 349 350 /* hard reset card */ 351 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_RESET); 352 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 353 for (i = 0; i < 5000; i++) { 354 delay(1000); 355 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 356 EG_PCB_STAT) == EG_PCB_NULL) 357 break; 358 } 359 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) { 360 DPRINTF(("egprobe: Reset failed\n")); 361 goto out; 362 } 363 pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 364 pcb[1] = 0; 365 if (egwritePCB(iot, ioh, pcb) != 0) 366 goto out; 367 368 if ((egreadPCB(iot, ioh, pcb) != 0) || 369 pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 370 pcb[1] != 0x0a) { 371 egprintpcb(pcb); 372 goto out; 373 } 374 375 ia->ia_iosize = 0x08; 376 ia->ia_msize = 0; 377 rval = 1; 378 379 out: 380 bus_space_unmap(iot, ioh, 0x08); 381 return rval; 382 } 383 384 void 385 egattach(parent, self, aux) 386 struct device *parent, *self; 387 void *aux; 388 { 389 struct eg_softc *sc = (void *)self; 390 struct isa_attach_args *ia = aux; 391 bus_space_tag_t iot = ia->ia_iot; 392 bus_space_handle_t ioh; 393 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 394 u_int8_t myaddr[ETHER_ADDR_LEN]; 395 396 printf("\n"); 397 398 /* Map i/o space. */ 399 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) { 400 printf("%s: can't map i/o space\n", self->dv_xname); 401 return; 402 } 403 404 sc->sc_iot = iot; 405 sc->sc_ioh = ioh; 406 407 sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 408 sc->eg_pcb[1] = 0; 409 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 410 printf("%s: error requesting adapter info\n", self->dv_xname); 411 return; 412 } 413 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 414 egprintpcb(sc->eg_pcb); 415 printf("%s: error reading adapter info\n", self->dv_xname); 416 return; 417 } 418 419 if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 420 sc->eg_pcb[1] != 0x0a) { 421 egprintpcb(sc->eg_pcb); 422 printf("%s: bogus adapter info\n", self->dv_xname); 423 return; 424 } 425 426 sc->eg_rom_major = sc->eg_pcb[3]; 427 sc->eg_rom_minor = sc->eg_pcb[2]; 428 sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 429 430 egstop(sc); 431 432 sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ 433 sc->eg_pcb[1] = 0; 434 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 435 printf("%s: can't send Get Station Address\n", self->dv_xname); 436 return; 437 } 438 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 439 printf("%s: can't read station address\n", self->dv_xname); 440 egprintpcb(sc->eg_pcb); 441 return; 442 } 443 444 /* check Get station address response */ 445 if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { 446 printf("%s: card responded with garbage (1)\n", 447 self->dv_xname); 448 egprintpcb(sc->eg_pcb); 449 return; 450 } 451 bcopy(&sc->eg_pcb[2], myaddr, ETHER_ADDR_LEN); 452 453 printf("%s: ROM v%d.%02d %dk address %s\n", self->dv_xname, 454 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 455 ether_sprintf(myaddr)); 456 457 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 458 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 459 printf("%s: can't send Set Station Address\n", self->dv_xname); 460 return; 461 } 462 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 463 printf("%s: can't read Set Station Address status\n", 464 self->dv_xname); 465 egprintpcb(sc->eg_pcb); 466 return; 467 } 468 if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || 469 sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { 470 printf("%s: card responded with garbage (2)\n", 471 self->dv_xname); 472 egprintpcb(sc->eg_pcb); 473 return; 474 } 475 476 /* Initialize ifnet structure. */ 477 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 478 ifp->if_softc = sc; 479 ifp->if_start = egstart; 480 ifp->if_ioctl = egioctl; 481 ifp->if_watchdog = egwatchdog; 482 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 483 484 /* Now we can attach the interface. */ 485 if_attach(ifp); 486 ether_ifattach(ifp, myaddr); 487 488 #if NBPFILTER > 0 489 bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); 490 #endif 491 492 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 493 IPL_NET, egintr, sc); 494 495 #if NRND > 0 496 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 497 RND_TYPE_NET, 0); 498 #endif 499 } 500 501 void 502 eginit(sc) 503 register struct eg_softc *sc; 504 { 505 register struct ifnet *ifp = &sc->sc_ethercom.ec_if; 506 bus_space_tag_t iot = sc->sc_iot; 507 bus_space_handle_t ioh = sc->sc_ioh; 508 509 /* soft reset the board */ 510 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_FLSH); 511 delay(100); 512 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_ATTN); 513 delay(100); 514 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 515 delay(200); 516 517 sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ 518 sc->eg_pcb[1] = 2; 519 sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ 520 sc->eg_pcb[3] = 0; 521 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) 522 printf("%s: can't send Configure 82586\n", 523 sc->sc_dev.dv_xname); 524 525 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 526 printf("%s: can't read Configure 82586 status\n", 527 sc->sc_dev.dv_xname); 528 egprintpcb(sc->eg_pcb); 529 } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) 530 printf("%s: configure card command failed\n", 531 sc->sc_dev.dv_xname); 532 533 if (sc->eg_inbuf == NULL) { 534 sc->eg_inbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 535 if (sc->eg_inbuf == NULL) { 536 printf("%s: can't allocate inbuf\n", 537 sc->sc_dev.dv_xname); 538 panic("eginit"); 539 } 540 } 541 sc->eg_incount = 0; 542 543 if (sc->eg_outbuf == NULL) { 544 sc->eg_outbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 545 if (sc->eg_outbuf == NULL) { 546 printf("%s: can't allocate outbuf\n", 547 sc->sc_dev.dv_xname); 548 panic("eginit"); 549 } 550 } 551 552 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_CMDE); 553 554 sc->eg_incount = 0; 555 egrecv(sc); 556 557 /* Interface is now `running', with no output active. */ 558 ifp->if_flags |= IFF_RUNNING; 559 ifp->if_flags &= ~IFF_OACTIVE; 560 561 /* Attempt to start output, if any. */ 562 egstart(ifp); 563 } 564 565 void 566 egrecv(sc) 567 struct eg_softc *sc; 568 { 569 570 while (sc->eg_incount < EG_INLEN) { 571 sc->eg_pcb[0] = EG_CMD_RECVPACKET; 572 sc->eg_pcb[1] = 0x08; 573 sc->eg_pcb[2] = 0; /* address not used.. we send zero */ 574 sc->eg_pcb[3] = 0; 575 sc->eg_pcb[4] = 0; 576 sc->eg_pcb[5] = 0; 577 sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ 578 sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; 579 sc->eg_pcb[8] = 0; /* timeout, 0 == none */ 580 sc->eg_pcb[9] = 0; 581 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 582 break; 583 sc->eg_incount++; 584 } 585 } 586 587 void 588 egstart(ifp) 589 struct ifnet *ifp; 590 { 591 register struct eg_softc *sc = ifp->if_softc; 592 bus_space_tag_t iot = sc->sc_iot; 593 bus_space_handle_t ioh = sc->sc_ioh; 594 struct mbuf *m0, *m; 595 caddr_t buffer; 596 int len; 597 u_int16_t *ptr; 598 599 /* Don't transmit if interface is busy or not running */ 600 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 601 return; 602 603 loop: 604 /* Dequeue the next datagram. */ 605 IF_DEQUEUE(&ifp->if_snd, m0); 606 if (m0 == 0) 607 return; 608 609 ifp->if_flags |= IFF_OACTIVE; 610 611 /* We need to use m->m_pkthdr.len, so require the header */ 612 if ((m0->m_flags & M_PKTHDR) == 0) { 613 printf("%s: no header mbuf\n", sc->sc_dev.dv_xname); 614 panic("egstart"); 615 } 616 len = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN); 617 618 #if NBPFILTER > 0 619 if (ifp->if_bpf) 620 bpf_mtap(ifp->if_bpf, m0); 621 #endif 622 623 sc->eg_pcb[0] = EG_CMD_SENDPACKET; 624 sc->eg_pcb[1] = 0x06; 625 sc->eg_pcb[2] = 0; /* address not used, we send zero */ 626 sc->eg_pcb[3] = 0; 627 sc->eg_pcb[4] = 0; 628 sc->eg_pcb[5] = 0; 629 sc->eg_pcb[6] = len; /* length of packet */ 630 sc->eg_pcb[7] = len >> 8; 631 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 632 printf("%s: can't send Send Packet command\n", 633 sc->sc_dev.dv_xname); 634 ifp->if_oerrors++; 635 ifp->if_flags &= ~IFF_OACTIVE; 636 m_freem(m0); 637 goto loop; 638 } 639 640 buffer = sc->eg_outbuf; 641 for (m = m0; m != 0; m = m->m_next) { 642 bcopy(mtod(m, caddr_t), buffer, m->m_len); 643 buffer += m->m_len; 644 } 645 646 /* set direction bit: host -> adapter */ 647 bus_space_write_1(iot, ioh, EG_CONTROL, 648 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 649 650 for (ptr = (u_int16_t *) sc->eg_outbuf; len > 0; len -= 2) { 651 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 652 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 653 ; /* XXX need timeout here */ 654 } 655 656 m_freem(m0); 657 } 658 659 int 660 egintr(arg) 661 void *arg; 662 { 663 register struct eg_softc *sc = arg; 664 bus_space_tag_t iot = sc->sc_iot; 665 bus_space_handle_t ioh = sc->sc_ioh; 666 int i, len, serviced; 667 u_int16_t *ptr; 668 669 serviced = 0; 670 671 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 672 egreadPCB(iot, ioh, sc->eg_pcb); 673 switch (sc->eg_pcb[0]) { 674 case EG_RSP_RECVPACKET: 675 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 676 677 /* Set direction bit : Adapter -> host */ 678 bus_space_write_1(iot, ioh, EG_CONTROL, 679 bus_space_read_1(iot, ioh, EG_CONTROL) | EG_CTL_DIR); 680 681 for (ptr = (u_int16_t *) sc->eg_inbuf; 682 len > 0; len -= 2) { 683 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 684 EG_STAT_HRDY)) 685 ; 686 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 687 } 688 689 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 690 egread(sc, sc->eg_inbuf, len); 691 692 sc->eg_incount--; 693 egrecv(sc); 694 serviced = 1; 695 break; 696 697 case EG_RSP_SENDPACKET: 698 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 699 DPRINTF(("%s: packet dropped\n", 700 sc->sc_dev.dv_xname)); 701 sc->sc_ethercom.ec_if.if_oerrors++; 702 } else 703 sc->sc_ethercom.ec_if.if_opackets++; 704 sc->sc_ethercom.ec_if.if_collisions += 705 sc->eg_pcb[8] & 0xf; 706 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 707 egstart(&sc->sc_ethercom.ec_if); 708 serviced = 1; 709 break; 710 711 /* XXX byte-order and type-size bugs here... */ 712 case EG_RSP_GETSTATS: 713 DPRINTF(("%s: Card Statistics\n", 714 sc->sc_dev.dv_xname)); 715 bcopy(&sc->eg_pcb[2], &i, sizeof(i)); 716 DPRINTF(("Receive Packets %d\n", i)); 717 bcopy(&sc->eg_pcb[6], &i, sizeof(i)); 718 DPRINTF(("Transmit Packets %d\n", i)); 719 DPRINTF(("CRC errors %d\n", 720 *(short *) &sc->eg_pcb[10])); 721 DPRINTF(("alignment errors %d\n", 722 *(short *) &sc->eg_pcb[12])); 723 DPRINTF(("no resources errors %d\n", 724 *(short *) &sc->eg_pcb[14])); 725 DPRINTF(("overrun errors %d\n", 726 *(short *) &sc->eg_pcb[16])); 727 serviced = 1; 728 break; 729 730 default: 731 printf("%s: egintr: Unknown response %x??\n", 732 sc->sc_dev.dv_xname, sc->eg_pcb[0]); 733 egprintpcb(sc->eg_pcb); 734 break; 735 } 736 737 #if NRND > 0 738 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 739 #endif 740 } 741 742 return serviced; 743 } 744 745 /* 746 * Pass a packet up to the higher levels. 747 */ 748 void 749 egread(sc, buf, len) 750 struct eg_softc *sc; 751 caddr_t buf; 752 int len; 753 { 754 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 755 struct mbuf *m; 756 struct ether_header *eh; 757 758 if (len <= sizeof(struct ether_header) || 759 len > ETHER_MAX_LEN) { 760 printf("%s: invalid packet size %d; dropping\n", 761 sc->sc_dev.dv_xname, len); 762 ifp->if_ierrors++; 763 return; 764 } 765 766 /* Pull packet off interface. */ 767 m = egget(sc, buf, len); 768 if (m == 0) { 769 ifp->if_ierrors++; 770 return; 771 } 772 773 ifp->if_ipackets++; 774 775 /* We assume the header fit entirely in one mbuf. */ 776 eh = mtod(m, struct ether_header *); 777 778 #if NBPFILTER > 0 779 /* 780 * Check if there's a BPF listener on this interface. 781 * If so, hand off the raw packet to BPF. 782 */ 783 if (ifp->if_bpf) { 784 bpf_mtap(ifp->if_bpf, m); 785 786 /* 787 * Note that the interface cannot be in promiscuous mode if 788 * there are no BPF listeners. And if we are in promiscuous 789 * mode, we have to check if this packet is really ours. 790 */ 791 if ((ifp->if_flags & IFF_PROMISC) && 792 (eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */ 793 bcmp(eh->ether_dhost, LLADDR(ifp->if_sadl), 794 sizeof(eh->ether_dhost)) != 0) { 795 m_freem(m); 796 return; 797 } 798 } 799 #endif 800 801 (*ifp->if_input)(ifp, m); 802 } 803 804 /* 805 * convert buf into mbufs 806 */ 807 struct mbuf * 808 egget(sc, buf, totlen) 809 struct eg_softc *sc; 810 caddr_t buf; 811 int totlen; 812 { 813 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 814 struct mbuf *m, *m0, *newm; 815 int len; 816 817 MGETHDR(m0, M_DONTWAIT, MT_DATA); 818 if (m0 == 0) 819 return (0); 820 m0->m_pkthdr.rcvif = ifp; 821 m0->m_pkthdr.len = totlen; 822 len = MHLEN; 823 m = m0; 824 825 while (totlen > 0) { 826 if (totlen >= MINCLSIZE) { 827 MCLGET(m, M_DONTWAIT); 828 if ((m->m_flags & M_EXT) == 0) 829 goto bad; 830 len = MCLBYTES; 831 } 832 833 m->m_len = len = min(totlen, len); 834 bcopy((caddr_t)buf, mtod(m, caddr_t), len); 835 buf += len; 836 837 totlen -= len; 838 if (totlen > 0) { 839 MGET(newm, M_DONTWAIT, MT_DATA); 840 if (newm == 0) 841 goto bad; 842 len = MLEN; 843 m = m->m_next = newm; 844 } 845 } 846 847 return (m0); 848 849 bad: 850 m_freem(m0); 851 return (0); 852 } 853 854 int 855 egioctl(ifp, cmd, data) 856 register struct ifnet *ifp; 857 u_long cmd; 858 caddr_t data; 859 { 860 struct eg_softc *sc = ifp->if_softc; 861 struct ifaddr *ifa = (struct ifaddr *)data; 862 int s, error = 0; 863 864 s = splnet(); 865 866 switch (cmd) { 867 868 case SIOCSIFADDR: 869 ifp->if_flags |= IFF_UP; 870 871 switch (ifa->ifa_addr->sa_family) { 872 #ifdef INET 873 case AF_INET: 874 eginit(sc); 875 arp_ifinit(ifp, ifa); 876 break; 877 #endif 878 #ifdef NS 879 case AF_NS: 880 { 881 register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 882 883 if (ns_nullhost(*ina)) 884 ina->x_host = 885 *(union ns_host *)LLADDR(ifp->if_sadl); 886 else 887 bcopy(ina->x_host.c_host, LLADDR(ifp->if_sadl), 888 ETHER_ADDR_LEN); 889 /* Set new address. */ 890 eginit(sc); 891 break; 892 } 893 #endif 894 default: 895 eginit(sc); 896 break; 897 } 898 break; 899 900 case SIOCSIFFLAGS: 901 if ((ifp->if_flags & IFF_UP) == 0 && 902 (ifp->if_flags & IFF_RUNNING) != 0) { 903 /* 904 * If interface is marked down and it is running, then 905 * stop it. 906 */ 907 egstop(sc); 908 ifp->if_flags &= ~IFF_RUNNING; 909 } else if ((ifp->if_flags & IFF_UP) != 0 && 910 (ifp->if_flags & IFF_RUNNING) == 0) { 911 /* 912 * If interface is marked up and it is stopped, then 913 * start it. 914 */ 915 eginit(sc); 916 } else { 917 sc->eg_pcb[0] = EG_CMD_GETSTATS; 918 sc->eg_pcb[1] = 0; 919 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 920 DPRINTF(("write error\n")); 921 /* 922 * XXX deal with flags changes: 923 * IFF_MULTICAST, IFF_PROMISC, 924 * IFF_LINK0, IFF_LINK1, 925 */ 926 } 927 break; 928 929 default: 930 error = EINVAL; 931 break; 932 } 933 934 splx(s); 935 return error; 936 } 937 938 void 939 egreset(sc) 940 struct eg_softc *sc; 941 { 942 int s; 943 944 DPRINTF(("%s: egreset()\n", sc->sc_dev.dv_xname)); 945 s = splnet(); 946 egstop(sc); 947 eginit(sc); 948 splx(s); 949 } 950 951 void 952 egwatchdog(ifp) 953 struct ifnet *ifp; 954 { 955 struct eg_softc *sc = ifp->if_softc; 956 957 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 958 sc->sc_ethercom.ec_if.if_oerrors++; 959 960 egreset(sc); 961 } 962 963 void 964 egstop(sc) 965 register struct eg_softc *sc; 966 { 967 968 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 969 } 970
Indexes created Thu Oct 02 14:10:14 GMT 2025