if_eg.c revision 1.43
1 /* $NetBSD: if_eg.c,v 1.43 1998/07/05 06:49:13 jonathan 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 ETHER_MIN_LEN 64 100 #define ETHER_MAX_LEN 1518 101 #define ETHER_ADDR_LEN 6 102 103 #define EG_INLEN 10 104 #define EG_BUFLEN 0x0670 105 106 #define EG_PCBLEN 64 107 108 /* 109 * Ethernet software status per interface. 110 */ 111 struct eg_softc { 112 struct device sc_dev; 113 void *sc_ih; 114 struct ethercom sc_ethercom; /* Ethernet common part */ 115 bus_space_tag_t sc_iot; /* bus space identifier */ 116 bus_space_handle_t sc_ioh; /* i/o handle */ 117 u_int8_t eg_rom_major; /* Cards ROM version (major number) */ 118 u_int8_t eg_rom_minor; /* Cards ROM version (minor number) */ 119 short eg_ram; /* Amount of RAM on the card */ 120 u_int8_t eg_pcb[EG_PCBLEN]; /* Primary Command Block buffer */ 121 u_int8_t eg_incount; /* Number of buffers currently used */ 122 caddr_t eg_inbuf; /* Incoming packet buffer */ 123 caddr_t eg_outbuf; /* Outgoing packet buffer */ 124 125 #if NRND > 0 126 rndsource_element_t rnd_source; 127 #endif 128 }; 129 130 int egprobe __P((struct device *, struct cfdata *, void *)); 131 void egattach __P((struct device *, struct device *, void *)); 132 133 struct cfattach eg_ca = { 134 sizeof(struct eg_softc), egprobe, egattach 135 }; 136 137 int egintr __P((void *)); 138 void eginit __P((struct eg_softc *)); 139 int egioctl __P((struct ifnet *, u_long, caddr_t)); 140 void egrecv __P((struct eg_softc *)); 141 void egstart __P((struct ifnet *)); 142 void egwatchdog __P((struct ifnet *)); 143 void egreset __P((struct eg_softc *)); 144 void egread __P((struct eg_softc *, caddr_t, int)); 145 struct mbuf *egget __P((struct eg_softc *, caddr_t, int)); 146 void egstop __P((struct eg_softc *)); 147 148 static inline void egprintpcb __P((u_int8_t *)); 149 static inline void egprintstat __P((u_char)); 150 static int egoutPCB __P((bus_space_tag_t, bus_space_handle_t, u_int8_t)); 151 static int egreadPCBstat __P((bus_space_tag_t, bus_space_handle_t, u_int8_t)); 152 static int egreadPCBready __P((bus_space_tag_t, bus_space_handle_t)); 153 static int egwritePCB __P((bus_space_tag_t, bus_space_handle_t, u_int8_t *)); 154 static int egreadPCB __P((bus_space_tag_t, bus_space_handle_t, u_int8_t *)); 155 156 /* 157 * Support stuff 158 */ 159 160 static inline void 161 egprintpcb(pcb) 162 u_int8_t *pcb; 163 { 164 int i; 165 166 for (i = 0; i < pcb[1] + 2; i++) 167 DPRINTF(("pcb[%2d] = %x\n", i, pcb[i])); 168 } 169 170 171 static inline void 172 egprintstat(b) 173 u_char b; 174 { 175 DPRINTF(("%s %s %s %s %s %s %s\n", 176 (b & EG_STAT_HCRE)?"HCRE":"", 177 (b & EG_STAT_ACRF)?"ACRF":"", 178 (b & EG_STAT_DIR )?"DIR ":"", 179 (b & EG_STAT_DONE)?"DONE":"", 180 (b & EG_STAT_ASF3)?"ASF3":"", 181 (b & EG_STAT_ASF2)?"ASF2":"", 182 (b & EG_STAT_ASF1)?"ASF1":"")); 183 } 184 185 static int 186 egoutPCB(iot, ioh, b) 187 bus_space_tag_t iot; 188 bus_space_handle_t ioh; 189 u_int8_t b; 190 { 191 int i; 192 193 for (i=0; i < 4000; i++) { 194 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) { 195 bus_space_write_1(iot, ioh, EG_COMMAND, b); 196 return 0; 197 } 198 delay(10); 199 } 200 DPRINTF(("egoutPCB failed\n")); 201 return 1; 202 } 203 204 static int 205 egreadPCBstat(iot, ioh, statb) 206 bus_space_tag_t iot; 207 bus_space_handle_t ioh; 208 u_int8_t statb; 209 { 210 int i; 211 212 for (i=0; i < 5000; i++) { 213 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 214 EG_PCB_STAT) != EG_PCB_NULL) 215 break; 216 delay(10); 217 } 218 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) == statb) 219 return 0; 220 return 1; 221 } 222 223 static int 224 egreadPCBready(iot, ioh) 225 bus_space_tag_t iot; 226 bus_space_handle_t ioh; 227 { 228 int i; 229 230 for (i=0; i < 10000; i++) { 231 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) 232 return 0; 233 delay(5); 234 } 235 DPRINTF(("PCB read not ready\n")); 236 return 1; 237 } 238 239 static int 240 egwritePCB(iot, ioh, pcb) 241 bus_space_tag_t iot; 242 bus_space_handle_t ioh; 243 u_int8_t *pcb; 244 { 245 int i; 246 u_int8_t len; 247 248 bus_space_write_1(iot, ioh, EG_CONTROL, 249 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 250 251 len = pcb[1] + 2; 252 for (i = 0; i < len; i++) 253 egoutPCB(iot, ioh, pcb[i]); 254 255 for (i=0; i < 4000; i++) { 256 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) 257 break; 258 delay(10); 259 } 260 261 bus_space_write_1(iot, ioh, EG_CONTROL, 262 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_DONE); 263 264 egoutPCB(iot, ioh, len); 265 266 if (egreadPCBstat(iot, ioh, EG_PCB_ACCEPT)) 267 return 1; 268 return 0; 269 } 270 271 static int 272 egreadPCB(iot, ioh, pcb) 273 bus_space_tag_t iot; 274 bus_space_handle_t ioh; 275 u_int8_t *pcb; 276 { 277 int i; 278 u_int8_t b; 279 280 bus_space_write_1(iot, ioh, EG_CONTROL, 281 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 282 283 bzero(pcb, EG_PCBLEN); 284 285 if (egreadPCBready(iot, ioh)) 286 return 1; 287 288 pcb[0] = bus_space_read_1(iot, ioh, EG_COMMAND); 289 290 if (egreadPCBready(iot, ioh)) 291 return 1; 292 293 pcb[1] = bus_space_read_1(iot, ioh, EG_COMMAND); 294 295 if (pcb[1] > 62) { 296 DPRINTF(("len %d too large\n", pcb[1])); 297 return 1; 298 } 299 300 for (i = 0; i < pcb[1]; i++) { 301 if (egreadPCBready(iot, ioh)) 302 return 1; 303 pcb[2+i] = bus_space_read_1(iot, ioh, EG_COMMAND); 304 } 305 if (egreadPCBready(iot, ioh)) 306 return 1; 307 if (egreadPCBstat(iot, ioh, EG_PCB_DONE)) 308 return 1; 309 if ((b = bus_space_read_1(iot, ioh, EG_COMMAND)) != pcb[1] + 2) { 310 DPRINTF(("%d != %d\n", b, pcb[1] + 2)); 311 return 1; 312 } 313 314 bus_space_write_1(iot, ioh, EG_CONTROL, 315 (bus_space_read_1(iot, ioh, EG_CONTROL) & 316 ~EG_PCB_STAT) | EG_PCB_ACCEPT); 317 318 return 0; 319 } 320 321 /* 322 * Real stuff 323 */ 324 325 int 326 egprobe(parent, match, aux) 327 struct device *parent; 328 struct cfdata *match; 329 void *aux; 330 { 331 struct isa_attach_args *ia = aux; 332 bus_space_tag_t iot = ia->ia_iot; 333 bus_space_handle_t ioh; 334 int i, rval; 335 static u_int8_t pcb[EG_PCBLEN]; 336 337 rval = 0; 338 339 if ((ia->ia_iobase & ~0x07f0) != 0) { 340 DPRINTF(("Weird iobase %x\n", ia->ia_iobase)); 341 return 0; 342 } 343 344 /* Disallow wildcarded i/o address. */ 345 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 346 return (0); 347 348 /* Map i/o space. */ 349 if (bus_space_map(iot, ia->ia_iobase, 0x08, 0, &ioh)) { 350 DPRINTF(("egprobe: can't map i/o space in probe\n")); 351 return 0; 352 } 353 354 /* hard reset card */ 355 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_RESET); 356 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 357 for (i = 0; i < 5000; i++) { 358 delay(1000); 359 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 360 EG_PCB_STAT) == EG_PCB_NULL) 361 break; 362 } 363 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) { 364 DPRINTF(("egprobe: Reset failed\n")); 365 goto out; 366 } 367 pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 368 pcb[1] = 0; 369 if (egwritePCB(iot, ioh, pcb) != 0) 370 goto out; 371 372 if ((egreadPCB(iot, ioh, pcb) != 0) || 373 pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 374 pcb[1] != 0x0a) { 375 egprintpcb(pcb); 376 goto out; 377 } 378 379 ia->ia_iosize = 0x08; 380 ia->ia_msize = 0; 381 rval = 1; 382 383 out: 384 bus_space_unmap(iot, ioh, 0x08); 385 return rval; 386 } 387 388 void 389 egattach(parent, self, aux) 390 struct device *parent, *self; 391 void *aux; 392 { 393 struct eg_softc *sc = (void *)self; 394 struct isa_attach_args *ia = aux; 395 bus_space_tag_t iot = ia->ia_iot; 396 bus_space_handle_t ioh; 397 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 398 u_int8_t myaddr[ETHER_ADDR_LEN]; 399 400 printf("\n"); 401 402 /* Map i/o space. */ 403 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) { 404 printf("%s: can't map i/o space\n", self->dv_xname); 405 return; 406 } 407 408 sc->sc_iot = iot; 409 sc->sc_ioh = ioh; 410 411 sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 412 sc->eg_pcb[1] = 0; 413 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 414 printf("%s: error requesting adapter info\n", self->dv_xname); 415 return; 416 } 417 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 418 egprintpcb(sc->eg_pcb); 419 printf("%s: error reading adapter info\n", self->dv_xname); 420 return; 421 } 422 423 if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 424 sc->eg_pcb[1] != 0x0a) { 425 egprintpcb(sc->eg_pcb); 426 printf("%s: bogus adapter info\n", self->dv_xname); 427 return; 428 } 429 430 sc->eg_rom_major = sc->eg_pcb[3]; 431 sc->eg_rom_minor = sc->eg_pcb[2]; 432 sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 433 434 egstop(sc); 435 436 sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ 437 sc->eg_pcb[1] = 0; 438 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 439 printf("%s: can't send Get Station Address\n", self->dv_xname); 440 return; 441 } 442 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 443 printf("%s: can't read station address\n", self->dv_xname); 444 egprintpcb(sc->eg_pcb); 445 return; 446 } 447 448 /* check Get station address response */ 449 if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { 450 printf("%s: card responded with garbage (1)\n", 451 self->dv_xname); 452 egprintpcb(sc->eg_pcb); 453 return; 454 } 455 bcopy(&sc->eg_pcb[2], myaddr, ETHER_ADDR_LEN); 456 457 printf("%s: ROM v%d.%02d %dk address %s\n", self->dv_xname, 458 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 459 ether_sprintf(myaddr)); 460 461 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 462 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 463 printf("%s: can't send Set Station Address\n", self->dv_xname); 464 return; 465 } 466 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 467 printf("%s: can't read Set Station Address status\n", 468 self->dv_xname); 469 egprintpcb(sc->eg_pcb); 470 return; 471 } 472 if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || 473 sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { 474 printf("%s: card responded with garbage (2)\n", 475 self->dv_xname); 476 egprintpcb(sc->eg_pcb); 477 return; 478 } 479 480 /* Initialize ifnet structure. */ 481 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 482 ifp->if_softc = sc; 483 ifp->if_start = egstart; 484 ifp->if_ioctl = egioctl; 485 ifp->if_watchdog = egwatchdog; 486 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 487 488 /* Now we can attach the interface. */ 489 if_attach(ifp); 490 ether_ifattach(ifp, myaddr); 491 492 #if NBPFILTER > 0 493 bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); 494 #endif 495 496 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 497 IPL_NET, egintr, sc); 498 499 #if NRND > 0 500 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, RND_TYPE_NET); 501 #endif 502 } 503 504 void 505 eginit(sc) 506 register struct eg_softc *sc; 507 { 508 register struct ifnet *ifp = &sc->sc_ethercom.ec_if; 509 bus_space_tag_t iot = sc->sc_iot; 510 bus_space_handle_t ioh = sc->sc_ioh; 511 512 /* soft reset the board */ 513 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_FLSH); 514 delay(100); 515 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_ATTN); 516 delay(100); 517 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 518 delay(200); 519 520 sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ 521 sc->eg_pcb[1] = 2; 522 sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ 523 sc->eg_pcb[3] = 0; 524 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) 525 printf("%s: can't send Configure 82586\n", 526 sc->sc_dev.dv_xname); 527 528 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 529 printf("%s: can't read Configure 82586 status\n", 530 sc->sc_dev.dv_xname); 531 egprintpcb(sc->eg_pcb); 532 } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) 533 printf("%s: configure card command failed\n", 534 sc->sc_dev.dv_xname); 535 536 if (sc->eg_inbuf == NULL) { 537 sc->eg_inbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 538 if (sc->eg_inbuf == NULL) { 539 printf("%s: can't allocate inbuf\n", 540 sc->sc_dev.dv_xname); 541 panic("eginit"); 542 } 543 } 544 sc->eg_incount = 0; 545 546 if (sc->eg_outbuf == NULL) { 547 sc->eg_outbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 548 if (sc->eg_outbuf == NULL) { 549 printf("%s: can't allocate outbuf\n", 550 sc->sc_dev.dv_xname); 551 panic("eginit"); 552 } 553 } 554 555 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_CMDE); 556 557 sc->eg_incount = 0; 558 egrecv(sc); 559 560 /* Interface is now `running', with no output active. */ 561 ifp->if_flags |= IFF_RUNNING; 562 ifp->if_flags &= ~IFF_OACTIVE; 563 564 /* Attempt to start output, if any. */ 565 egstart(ifp); 566 } 567 568 void 569 egrecv(sc) 570 struct eg_softc *sc; 571 { 572 573 while (sc->eg_incount < EG_INLEN) { 574 sc->eg_pcb[0] = EG_CMD_RECVPACKET; 575 sc->eg_pcb[1] = 0x08; 576 sc->eg_pcb[2] = 0; /* address not used.. we send zero */ 577 sc->eg_pcb[3] = 0; 578 sc->eg_pcb[4] = 0; 579 sc->eg_pcb[5] = 0; 580 sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ 581 sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; 582 sc->eg_pcb[8] = 0; /* timeout, 0 == none */ 583 sc->eg_pcb[9] = 0; 584 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 585 break; 586 sc->eg_incount++; 587 } 588 } 589 590 void 591 egstart(ifp) 592 struct ifnet *ifp; 593 { 594 register struct eg_softc *sc = ifp->if_softc; 595 bus_space_tag_t iot = sc->sc_iot; 596 bus_space_handle_t ioh = sc->sc_ioh; 597 struct mbuf *m0, *m; 598 caddr_t buffer; 599 int len; 600 u_int16_t *ptr; 601 602 /* Don't transmit if interface is busy or not running */ 603 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 604 return; 605 606 loop: 607 /* Dequeue the next datagram. */ 608 IF_DEQUEUE(&ifp->if_snd, m0); 609 if (m0 == 0) 610 return; 611 612 ifp->if_flags |= IFF_OACTIVE; 613 614 /* We need to use m->m_pkthdr.len, so require the header */ 615 if ((m0->m_flags & M_PKTHDR) == 0) { 616 printf("%s: no header mbuf\n", sc->sc_dev.dv_xname); 617 panic("egstart"); 618 } 619 len = max(m0->m_pkthdr.len, ETHER_MIN_LEN); 620 621 #if NBPFILTER > 0 622 if (ifp->if_bpf) 623 bpf_mtap(ifp->if_bpf, m0); 624 #endif 625 626 sc->eg_pcb[0] = EG_CMD_SENDPACKET; 627 sc->eg_pcb[1] = 0x06; 628 sc->eg_pcb[2] = 0; /* address not used, we send zero */ 629 sc->eg_pcb[3] = 0; 630 sc->eg_pcb[4] = 0; 631 sc->eg_pcb[5] = 0; 632 sc->eg_pcb[6] = len; /* length of packet */ 633 sc->eg_pcb[7] = len >> 8; 634 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 635 printf("%s: can't send Send Packet command\n", 636 sc->sc_dev.dv_xname); 637 ifp->if_oerrors++; 638 ifp->if_flags &= ~IFF_OACTIVE; 639 m_freem(m0); 640 goto loop; 641 } 642 643 buffer = sc->eg_outbuf; 644 for (m = m0; m != 0; m = m->m_next) { 645 bcopy(mtod(m, caddr_t), buffer, m->m_len); 646 buffer += m->m_len; 647 } 648 649 /* set direction bit: host -> adapter */ 650 bus_space_write_1(iot, ioh, EG_CONTROL, 651 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 652 653 for (ptr = (u_int16_t *) sc->eg_outbuf; len > 0; len -= 2) { 654 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 655 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 656 ; /* XXX need timeout here */ 657 } 658 659 m_freem(m0); 660 } 661 662 int 663 egintr(arg) 664 void *arg; 665 { 666 register struct eg_softc *sc = arg; 667 bus_space_tag_t iot = sc->sc_iot; 668 bus_space_handle_t ioh = sc->sc_ioh; 669 int i, len, serviced; 670 u_int16_t *ptr; 671 672 serviced = 0; 673 674 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 675 egreadPCB(iot, ioh, sc->eg_pcb); 676 switch (sc->eg_pcb[0]) { 677 case EG_RSP_RECVPACKET: 678 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 679 680 /* Set direction bit : Adapter -> host */ 681 bus_space_write_1(iot, ioh, EG_CONTROL, 682 bus_space_read_1(iot, ioh, EG_CONTROL) | EG_CTL_DIR); 683 684 for (ptr = (u_int16_t *) sc->eg_inbuf; 685 len > 0; len -= 2) { 686 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 687 EG_STAT_HRDY)) 688 ; 689 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 690 } 691 692 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 693 egread(sc, sc->eg_inbuf, len); 694 695 sc->eg_incount--; 696 egrecv(sc); 697 serviced = 1; 698 break; 699 700 case EG_RSP_SENDPACKET: 701 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 702 DPRINTF(("%s: packet dropped\n", 703 sc->sc_dev.dv_xname)); 704 sc->sc_ethercom.ec_if.if_oerrors++; 705 } else 706 sc->sc_ethercom.ec_if.if_opackets++; 707 sc->sc_ethercom.ec_if.if_collisions += 708 sc->eg_pcb[8] & 0xf; 709 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 710 egstart(&sc->sc_ethercom.ec_if); 711 serviced = 1; 712 break; 713 714 /* XXX byte-order and type-size bugs here... */ 715 case EG_RSP_GETSTATS: 716 DPRINTF(("%s: Card Statistics\n", 717 sc->sc_dev.dv_xname)); 718 bcopy(&sc->eg_pcb[2], &i, sizeof(i)); 719 DPRINTF(("Receive Packets %d\n", i)); 720 bcopy(&sc->eg_pcb[6], &i, sizeof(i)); 721 DPRINTF(("Transmit Packets %d\n", i)); 722 DPRINTF(("CRC errors %d\n", 723 *(short *) &sc->eg_pcb[10])); 724 DPRINTF(("alignment errors %d\n", 725 *(short *) &sc->eg_pcb[12])); 726 DPRINTF(("no resources errors %d\n", 727 *(short *) &sc->eg_pcb[14])); 728 DPRINTF(("overrun errors %d\n", 729 *(short *) &sc->eg_pcb[16])); 730 serviced = 1; 731 break; 732 733 default: 734 printf("%s: egintr: Unknown response %x??\n", 735 sc->sc_dev.dv_xname, sc->eg_pcb[0]); 736 egprintpcb(sc->eg_pcb); 737 break; 738 } 739 740 #if NRND > 0 741 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 742 #endif 743 } 744 745 return serviced; 746 } 747 748 /* 749 * Pass a packet up to the higher levels. 750 */ 751 void 752 egread(sc, buf, len) 753 struct eg_softc *sc; 754 caddr_t buf; 755 int len; 756 { 757 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 758 struct mbuf *m; 759 struct ether_header *eh; 760 761 if (len <= sizeof(struct ether_header) || 762 len > ETHER_MAX_LEN) { 763 printf("%s: invalid packet size %d; dropping\n", 764 sc->sc_dev.dv_xname, len); 765 ifp->if_ierrors++; 766 return; 767 } 768 769 /* Pull packet off interface. */ 770 m = egget(sc, buf, len); 771 if (m == 0) { 772 ifp->if_ierrors++; 773 return; 774 } 775 776 ifp->if_ipackets++; 777 778 /* We assume the header fit entirely in one mbuf. */ 779 eh = mtod(m, struct ether_header *); 780 781 #if NBPFILTER > 0 782 /* 783 * Check if there's a BPF listener on this interface. 784 * If so, hand off the raw packet to BPF. 785 */ 786 if (ifp->if_bpf) { 787 bpf_mtap(ifp->if_bpf, m); 788 789 /* 790 * Note that the interface cannot be in promiscuous mode if 791 * there are no BPF listeners. And if we are in promiscuous 792 * mode, we have to check if this packet is really ours. 793 */ 794 if ((ifp->if_flags & IFF_PROMISC) && 795 (eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */ 796 bcmp(eh->ether_dhost, LLADDR(ifp->if_sadl), 797 sizeof(eh->ether_dhost)) != 0) { 798 m_freem(m); 799 return; 800 } 801 } 802 #endif 803 804 /* We assume the header fit entirely in one mbuf. */ 805 m_adj(m, sizeof(struct ether_header)); 806 ether_input(ifp, eh, m); 807 } 808 809 /* 810 * convert buf into mbufs 811 */ 812 struct mbuf * 813 egget(sc, buf, totlen) 814 struct eg_softc *sc; 815 caddr_t buf; 816 int totlen; 817 { 818 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 819 struct mbuf *top, **mp, *m; 820 int len; 821 822 MGETHDR(m, M_DONTWAIT, MT_DATA); 823 if (m == 0) 824 return 0; 825 m->m_pkthdr.rcvif = ifp; 826 m->m_pkthdr.len = totlen; 827 len = MHLEN; 828 top = 0; 829 mp = ⊤ 830 831 while (totlen > 0) { 832 if (top) { 833 MGET(m, M_DONTWAIT, MT_DATA); 834 if (m == 0) { 835 m_freem(top); 836 return 0; 837 } 838 len = MLEN; 839 } 840 if (totlen >= MINCLSIZE) { 841 MCLGET(m, M_DONTWAIT); 842 if ((m->m_flags & M_EXT) == 0) { 843 m_free(m); 844 m_freem(top); 845 return 0; 846 } 847 len = MCLBYTES; 848 } 849 m->m_len = len = min(totlen, len); 850 bcopy((caddr_t)buf, mtod(m, caddr_t), len); 851 buf += len; 852 totlen -= len; 853 *mp = m; 854 mp = &m->m_next; 855 } 856 857 return top; 858 } 859 860 int 861 egioctl(ifp, cmd, data) 862 register struct ifnet *ifp; 863 u_long cmd; 864 caddr_t data; 865 { 866 struct eg_softc *sc = ifp->if_softc; 867 struct ifaddr *ifa = (struct ifaddr *)data; 868 int s, error = 0; 869 870 s = splnet(); 871 872 switch (cmd) { 873 874 case SIOCSIFADDR: 875 ifp->if_flags |= IFF_UP; 876 877 switch (ifa->ifa_addr->sa_family) { 878 #ifdef INET 879 case AF_INET: 880 eginit(sc); 881 arp_ifinit(ifp, ifa); 882 break; 883 #endif 884 #ifdef NS 885 case AF_NS: 886 { 887 register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 888 889 if (ns_nullhost(*ina)) 890 ina->x_host = 891 *(union ns_host *)LLADDR(ifp->if_sadl); 892 else 893 bcopy(ina->x_host.c_host, LLADDR(ifp->if_sadl), 894 ETHER_ADDR_LEN); 895 /* Set new address. */ 896 eginit(sc); 897 break; 898 } 899 #endif 900 default: 901 eginit(sc); 902 break; 903 } 904 break; 905 906 case SIOCSIFFLAGS: 907 if ((ifp->if_flags & IFF_UP) == 0 && 908 (ifp->if_flags & IFF_RUNNING) != 0) { 909 /* 910 * If interface is marked down and it is running, then 911 * stop it. 912 */ 913 egstop(sc); 914 ifp->if_flags &= ~IFF_RUNNING; 915 } else if ((ifp->if_flags & IFF_UP) != 0 && 916 (ifp->if_flags & IFF_RUNNING) == 0) { 917 /* 918 * If interface is marked up and it is stopped, then 919 * start it. 920 */ 921 eginit(sc); 922 } else { 923 sc->eg_pcb[0] = EG_CMD_GETSTATS; 924 sc->eg_pcb[1] = 0; 925 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 926 DPRINTF(("write error\n")); 927 /* 928 * XXX deal with flags changes: 929 * IFF_MULTICAST, IFF_PROMISC, 930 * IFF_LINK0, IFF_LINK1, 931 */ 932 } 933 break; 934 935 default: 936 error = EINVAL; 937 break; 938 } 939 940 splx(s); 941 return error; 942 } 943 944 void 945 egreset(sc) 946 struct eg_softc *sc; 947 { 948 int s; 949 950 DPRINTF(("%s: egreset()\n", sc->sc_dev.dv_xname)); 951 s = splnet(); 952 egstop(sc); 953 eginit(sc); 954 splx(s); 955 } 956 957 void 958 egwatchdog(ifp) 959 struct ifnet *ifp; 960 { 961 struct eg_softc *sc = ifp->if_softc; 962 963 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 964 sc->sc_ethercom.ec_if.if_oerrors++; 965 966 egreset(sc); 967 } 968 969 void 970 egstop(sc) 971 register struct eg_softc *sc; 972 { 973 974 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 975 } 976
Indexes created Thu Oct 02 14:10:14 GMT 2025