if_eg.c revision 1.61
1 /* $NetBSD: if_eg.c,v 1.61 2003/01/15 22:00:43 bouyer 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 /* 37 * To do: 38 * - multicast 39 * - promiscuous 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: if_eg.c,v 1.61 2003/01/15 22:00:43 bouyer Exp $"); 44 45 #include "opt_inet.h" 46 #include "opt_ns.h" 47 #include "bpfilter.h" 48 #include "rnd.h" 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/mbuf.h> 53 #include <sys/socket.h> 54 #include <sys/ioctl.h> 55 #include <sys/errno.h> 56 #include <sys/syslog.h> 57 #include <sys/select.h> 58 #include <sys/device.h> 59 #if NRND > 0 60 #include <sys/rnd.h> 61 #endif 62 63 #include <net/if.h> 64 #include <net/if_dl.h> 65 #include <net/if_types.h> 66 67 #include <net/if_ether.h> 68 69 #ifdef INET 70 #include <netinet/in.h> 71 #include <netinet/in_systm.h> 72 #include <netinet/in_var.h> 73 #include <netinet/ip.h> 74 #include <netinet/if_inarp.h> 75 #endif 76 77 #ifdef NS 78 #include <netns/ns.h> 79 #include <netns/ns_if.h> 80 #endif 81 82 #if NBPFILTER > 0 83 #include <net/bpf.h> 84 #include <net/bpfdesc.h> 85 #endif 86 87 #include <machine/cpu.h> 88 #include <machine/intr.h> 89 #include <machine/bus.h> 90 91 #include <dev/isa/isavar.h> 92 #include <dev/isa/if_egreg.h> 93 #include <dev/isa/elink.h> 94 95 /* for debugging convenience */ 96 #ifdef EGDEBUG 97 #define DPRINTF(x) printf x 98 #else 99 #define DPRINTF(x) 100 #endif 101 102 #define EG_INLEN 10 103 #define EG_BUFLEN 0x0670 104 105 #define EG_PCBLEN 64 106 107 /* 108 * Ethernet software status per interface. 109 */ 110 struct eg_softc { 111 struct device sc_dev; 112 void *sc_ih; 113 struct ethercom sc_ethercom; /* Ethernet common part */ 114 bus_space_tag_t sc_iot; /* bus space identifier */ 115 bus_space_handle_t sc_ioh; /* i/o handle */ 116 u_int8_t eg_rom_major; /* Cards ROM version (major number) */ 117 u_int8_t eg_rom_minor; /* Cards ROM version (minor number) */ 118 short eg_ram; /* Amount of RAM on the card */ 119 u_int8_t eg_pcb[EG_PCBLEN]; /* Primary Command Block buffer */ 120 u_int8_t eg_incount; /* Number of buffers currently used */ 121 caddr_t eg_inbuf; /* Incoming packet buffer */ 122 caddr_t eg_outbuf; /* Outgoing packet buffer */ 123 124 #if NRND > 0 125 rndsource_element_t rnd_source; 126 #endif 127 }; 128 129 int egprobe __P((struct device *, struct cfdata *, void *)); 130 void egattach __P((struct device *, struct device *, void *)); 131 132 CFATTACH_DECL(eg, sizeof(struct eg_softc), 133 egprobe, egattach, NULL, NULL); 134 135 int egintr __P((void *)); 136 void eginit __P((struct eg_softc *)); 137 int egioctl __P((struct ifnet *, u_long, caddr_t)); 138 void egrecv __P((struct eg_softc *)); 139 void egstart __P((struct ifnet *)); 140 void egwatchdog __P((struct ifnet *)); 141 void egreset __P((struct eg_softc *)); 142 void egread __P((struct eg_softc *, caddr_t, int)); 143 struct mbuf *egget __P((struct eg_softc *, caddr_t, int)); 144 void egstop __P((struct eg_softc *)); 145 146 static inline void egprintpcb __P((u_int8_t *)); 147 static inline void egprintstat __P((u_char)); 148 static int egoutPCB __P((bus_space_tag_t, bus_space_handle_t, u_int8_t)); 149 static int egreadPCBstat __P((bus_space_tag_t, bus_space_handle_t, u_int8_t)); 150 static int egreadPCBready __P((bus_space_tag_t, bus_space_handle_t)); 151 static int egwritePCB __P((bus_space_tag_t, bus_space_handle_t, u_int8_t *)); 152 static int egreadPCB __P((bus_space_tag_t, bus_space_handle_t, u_int8_t *)); 153 154 /* 155 * Support stuff 156 */ 157 158 static inline void 159 egprintpcb(pcb) 160 u_int8_t *pcb; 161 { 162 int i; 163 164 for (i = 0; i < pcb[1] + 2; i++) 165 DPRINTF(("pcb[%2d] = %x\n", i, pcb[i])); 166 } 167 168 169 static inline void 170 egprintstat(b) 171 u_char b; 172 { 173 DPRINTF(("%s %s %s %s %s %s %s\n", 174 (b & EG_STAT_HCRE)?"HCRE":"", 175 (b & EG_STAT_ACRF)?"ACRF":"", 176 (b & EG_STAT_DIR )?"DIR ":"", 177 (b & EG_STAT_DONE)?"DONE":"", 178 (b & EG_STAT_ASF3)?"ASF3":"", 179 (b & EG_STAT_ASF2)?"ASF2":"", 180 (b & EG_STAT_ASF1)?"ASF1":"")); 181 } 182 183 static int 184 egoutPCB(iot, ioh, b) 185 bus_space_tag_t iot; 186 bus_space_handle_t ioh; 187 u_int8_t b; 188 { 189 int i; 190 191 for (i=0; i < 4000; i++) { 192 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) { 193 bus_space_write_1(iot, ioh, EG_COMMAND, b); 194 return 0; 195 } 196 delay(10); 197 } 198 DPRINTF(("egoutPCB failed\n")); 199 return 1; 200 } 201 202 static int 203 egreadPCBstat(iot, ioh, statb) 204 bus_space_tag_t iot; 205 bus_space_handle_t ioh; 206 u_int8_t statb; 207 { 208 int i; 209 210 for (i=0; i < 5000; i++) { 211 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 212 EG_PCB_STAT) != EG_PCB_NULL) 213 break; 214 delay(10); 215 } 216 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) == statb) 217 return 0; 218 return 1; 219 } 220 221 static int 222 egreadPCBready(iot, ioh) 223 bus_space_tag_t iot; 224 bus_space_handle_t ioh; 225 { 226 int i; 227 228 for (i=0; i < 10000; i++) { 229 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) 230 return 0; 231 delay(5); 232 } 233 DPRINTF(("PCB read not ready\n")); 234 return 1; 235 } 236 237 static int 238 egwritePCB(iot, ioh, pcb) 239 bus_space_tag_t iot; 240 bus_space_handle_t ioh; 241 u_int8_t *pcb; 242 { 243 int i; 244 u_int8_t len; 245 246 bus_space_write_1(iot, ioh, EG_CONTROL, 247 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 248 249 len = pcb[1] + 2; 250 for (i = 0; i < len; i++) 251 egoutPCB(iot, ioh, pcb[i]); 252 253 for (i=0; i < 4000; i++) { 254 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) 255 break; 256 delay(10); 257 } 258 259 bus_space_write_1(iot, ioh, EG_CONTROL, 260 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_DONE); 261 262 egoutPCB(iot, ioh, len); 263 264 if (egreadPCBstat(iot, ioh, EG_PCB_ACCEPT)) 265 return 1; 266 return 0; 267 } 268 269 static int 270 egreadPCB(iot, ioh, pcb) 271 bus_space_tag_t iot; 272 bus_space_handle_t ioh; 273 u_int8_t *pcb; 274 { 275 int i; 276 u_int8_t b; 277 278 bus_space_write_1(iot, ioh, EG_CONTROL, 279 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 280 281 memset(pcb, 0, EG_PCBLEN); 282 283 if (egreadPCBready(iot, ioh)) 284 return 1; 285 286 pcb[0] = bus_space_read_1(iot, ioh, EG_COMMAND); 287 288 if (egreadPCBready(iot, ioh)) 289 return 1; 290 291 pcb[1] = bus_space_read_1(iot, ioh, EG_COMMAND); 292 293 if (pcb[1] > 62) { 294 DPRINTF(("len %d too large\n", pcb[1])); 295 return 1; 296 } 297 298 for (i = 0; i < pcb[1]; i++) { 299 if (egreadPCBready(iot, ioh)) 300 return 1; 301 pcb[2+i] = bus_space_read_1(iot, ioh, EG_COMMAND); 302 } 303 if (egreadPCBready(iot, ioh)) 304 return 1; 305 if (egreadPCBstat(iot, ioh, EG_PCB_DONE)) 306 return 1; 307 if ((b = bus_space_read_1(iot, ioh, EG_COMMAND)) != pcb[1] + 2) { 308 DPRINTF(("%d != %d\n", b, pcb[1] + 2)); 309 return 1; 310 } 311 312 bus_space_write_1(iot, ioh, EG_CONTROL, 313 (bus_space_read_1(iot, ioh, EG_CONTROL) & 314 ~EG_PCB_STAT) | EG_PCB_ACCEPT); 315 316 return 0; 317 } 318 319 /* 320 * Real stuff 321 */ 322 323 int 324 egprobe(parent, match, aux) 325 struct device *parent; 326 struct cfdata *match; 327 void *aux; 328 { 329 struct isa_attach_args *ia = aux; 330 bus_space_tag_t iot = ia->ia_iot; 331 bus_space_handle_t ioh; 332 int i, rval; 333 static u_int8_t pcb[EG_PCBLEN]; 334 335 rval = 0; 336 337 if (ia->ia_nio < 1) 338 return (0); 339 if (ia->ia_nirq < 1) 340 return (0); 341 342 if (ISA_DIRECT_CONFIG(ia)) 343 return (0); 344 345 /* Disallow wildcarded i/o address. */ 346 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 347 return (0); 348 349 /* Disallow wildcarded IRQ. */ 350 if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) 351 return (0); 352 353 if ((ia->ia_io[0].ir_addr & ~0x07f0) != 0) { 354 DPRINTF(("Weird iobase %x\n", ia->ia_io[0].ir_addr)); 355 return 0; 356 } 357 358 /* Map i/o space. */ 359 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 360 DPRINTF(("egprobe: can't map i/o space in probe\n")); 361 return 0; 362 } 363 364 /* hard reset card */ 365 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_RESET); 366 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 367 for (i = 0; i < 5000; i++) { 368 delay(1000); 369 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 370 EG_PCB_STAT) == EG_PCB_NULL) 371 break; 372 } 373 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) { 374 DPRINTF(("egprobe: Reset failed\n")); 375 goto out; 376 } 377 pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 378 pcb[1] = 0; 379 if (egwritePCB(iot, ioh, pcb) != 0) 380 goto out; 381 382 if ((egreadPCB(iot, ioh, pcb) != 0) || 383 pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 384 pcb[1] != 0x0a) { 385 egprintpcb(pcb); 386 goto out; 387 } 388 389 ia->ia_nio = 1; 390 ia->ia_io[0].ir_size = 0x08; 391 392 ia->ia_nirq = 1; 393 394 ia->ia_niomem = 0; 395 ia->ia_ndrq = 0; 396 397 rval = 1; 398 399 out: 400 bus_space_unmap(iot, ioh, 0x08); 401 return rval; 402 } 403 404 void 405 egattach(parent, self, aux) 406 struct device *parent, *self; 407 void *aux; 408 { 409 struct eg_softc *sc = (void *)self; 410 struct isa_attach_args *ia = aux; 411 bus_space_tag_t iot = ia->ia_iot; 412 bus_space_handle_t ioh; 413 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 414 u_int8_t myaddr[ETHER_ADDR_LEN]; 415 416 printf("\n"); 417 418 /* Map i/o space. */ 419 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 420 printf("%s: can't map i/o space\n", self->dv_xname); 421 return; 422 } 423 424 sc->sc_iot = iot; 425 sc->sc_ioh = ioh; 426 427 sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 428 sc->eg_pcb[1] = 0; 429 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 430 printf("%s: error requesting adapter info\n", self->dv_xname); 431 return; 432 } 433 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 434 egprintpcb(sc->eg_pcb); 435 printf("%s: error reading adapter info\n", self->dv_xname); 436 return; 437 } 438 439 if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 440 sc->eg_pcb[1] != 0x0a) { 441 egprintpcb(sc->eg_pcb); 442 printf("%s: bogus adapter info\n", self->dv_xname); 443 return; 444 } 445 446 sc->eg_rom_major = sc->eg_pcb[3]; 447 sc->eg_rom_minor = sc->eg_pcb[2]; 448 sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 449 450 egstop(sc); 451 452 sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ 453 sc->eg_pcb[1] = 0; 454 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 455 printf("%s: can't send Get Station Address\n", self->dv_xname); 456 return; 457 } 458 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 459 printf("%s: can't read station address\n", self->dv_xname); 460 egprintpcb(sc->eg_pcb); 461 return; 462 } 463 464 /* check Get station address response */ 465 if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { 466 printf("%s: card responded with garbage (1)\n", 467 self->dv_xname); 468 egprintpcb(sc->eg_pcb); 469 return; 470 } 471 memcpy(myaddr, &sc->eg_pcb[2], ETHER_ADDR_LEN); 472 473 printf("%s: ROM v%d.%02d %dk address %s\n", self->dv_xname, 474 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 475 ether_sprintf(myaddr)); 476 477 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 478 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 479 printf("%s: can't send Set Station Address\n", self->dv_xname); 480 return; 481 } 482 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 483 printf("%s: can't read Set Station Address status\n", 484 self->dv_xname); 485 egprintpcb(sc->eg_pcb); 486 return; 487 } 488 if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || 489 sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { 490 printf("%s: card responded with garbage (2)\n", 491 self->dv_xname); 492 egprintpcb(sc->eg_pcb); 493 return; 494 } 495 496 /* Initialize ifnet structure. */ 497 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 498 ifp->if_softc = sc; 499 ifp->if_start = egstart; 500 ifp->if_ioctl = egioctl; 501 ifp->if_watchdog = egwatchdog; 502 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 503 IFQ_SET_READY(&ifp->if_snd); 504 505 /* Now we can attach the interface. */ 506 if_attach(ifp); 507 ether_ifattach(ifp, myaddr); 508 509 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 510 IST_EDGE, IPL_NET, egintr, sc); 511 512 #if NRND > 0 513 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 514 RND_TYPE_NET, 0); 515 #endif 516 } 517 518 void 519 eginit(sc) 520 struct eg_softc *sc; 521 { 522 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 523 bus_space_tag_t iot = sc->sc_iot; 524 bus_space_handle_t ioh = sc->sc_ioh; 525 526 /* soft reset the board */ 527 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_FLSH); 528 delay(100); 529 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_ATTN); 530 delay(100); 531 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 532 delay(200); 533 534 sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ 535 sc->eg_pcb[1] = 2; 536 sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ 537 sc->eg_pcb[3] = 0; 538 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) 539 printf("%s: can't send Configure 82586\n", 540 sc->sc_dev.dv_xname); 541 542 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 543 printf("%s: can't read Configure 82586 status\n", 544 sc->sc_dev.dv_xname); 545 egprintpcb(sc->eg_pcb); 546 } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) 547 printf("%s: configure card command failed\n", 548 sc->sc_dev.dv_xname); 549 550 if (sc->eg_inbuf == NULL) { 551 sc->eg_inbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 552 if (sc->eg_inbuf == NULL) { 553 printf("%s: can't allocate inbuf\n", 554 sc->sc_dev.dv_xname); 555 panic("eginit"); 556 } 557 } 558 sc->eg_incount = 0; 559 560 if (sc->eg_outbuf == NULL) { 561 sc->eg_outbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 562 if (sc->eg_outbuf == NULL) { 563 printf("%s: can't allocate outbuf\n", 564 sc->sc_dev.dv_xname); 565 panic("eginit"); 566 } 567 } 568 569 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_CMDE); 570 571 sc->eg_incount = 0; 572 egrecv(sc); 573 574 /* Interface is now `running', with no output active. */ 575 ifp->if_flags |= IFF_RUNNING; 576 ifp->if_flags &= ~IFF_OACTIVE; 577 578 /* Attempt to start output, if any. */ 579 egstart(ifp); 580 } 581 582 void 583 egrecv(sc) 584 struct eg_softc *sc; 585 { 586 587 while (sc->eg_incount < EG_INLEN) { 588 sc->eg_pcb[0] = EG_CMD_RECVPACKET; 589 sc->eg_pcb[1] = 0x08; 590 sc->eg_pcb[2] = 0; /* address not used.. we send zero */ 591 sc->eg_pcb[3] = 0; 592 sc->eg_pcb[4] = 0; 593 sc->eg_pcb[5] = 0; 594 sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ 595 sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; 596 sc->eg_pcb[8] = 0; /* timeout, 0 == none */ 597 sc->eg_pcb[9] = 0; 598 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 599 break; 600 sc->eg_incount++; 601 } 602 } 603 604 void 605 egstart(ifp) 606 struct ifnet *ifp; 607 { 608 struct eg_softc *sc = ifp->if_softc; 609 bus_space_tag_t iot = sc->sc_iot; 610 bus_space_handle_t ioh = sc->sc_ioh; 611 struct mbuf *m0, *m; 612 caddr_t buffer; 613 int len; 614 u_int16_t *ptr; 615 616 /* Don't transmit if interface is busy or not running */ 617 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 618 return; 619 620 loop: 621 /* Dequeue the next datagram. */ 622 IFQ_DEQUEUE(&ifp->if_snd, m0); 623 if (m0 == 0) 624 return; 625 626 ifp->if_flags |= IFF_OACTIVE; 627 628 /* We need to use m->m_pkthdr.len, so require the header */ 629 if ((m0->m_flags & M_PKTHDR) == 0) { 630 printf("%s: no header mbuf\n", sc->sc_dev.dv_xname); 631 panic("egstart"); 632 } 633 len = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN); 634 635 #if NBPFILTER > 0 636 if (ifp->if_bpf) 637 bpf_mtap(ifp->if_bpf, m0); 638 #endif 639 640 sc->eg_pcb[0] = EG_CMD_SENDPACKET; 641 sc->eg_pcb[1] = 0x06; 642 sc->eg_pcb[2] = 0; /* address not used, we send zero */ 643 sc->eg_pcb[3] = 0; 644 sc->eg_pcb[4] = 0; 645 sc->eg_pcb[5] = 0; 646 sc->eg_pcb[6] = len; /* length of packet */ 647 sc->eg_pcb[7] = len >> 8; 648 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 649 printf("%s: can't send Send Packet command\n", 650 sc->sc_dev.dv_xname); 651 ifp->if_oerrors++; 652 ifp->if_flags &= ~IFF_OACTIVE; 653 m_freem(m0); 654 goto loop; 655 } 656 657 buffer = sc->eg_outbuf; 658 for (m = m0; m != 0; m = m->m_next) { 659 memcpy(buffer, mtod(m, caddr_t), m->m_len); 660 buffer += m->m_len; 661 } 662 if (len > m0->m_pkthdr.len) 663 memset(buffer, 0, len - m0->m_pkthdr.len); 664 665 /* set direction bit: host -> adapter */ 666 bus_space_write_1(iot, ioh, EG_CONTROL, 667 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 668 669 for (ptr = (u_int16_t *) sc->eg_outbuf; len > 0; len -= 2) { 670 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 671 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 672 ; /* XXX need timeout here */ 673 } 674 675 m_freem(m0); 676 } 677 678 int 679 egintr(arg) 680 void *arg; 681 { 682 struct eg_softc *sc = arg; 683 bus_space_tag_t iot = sc->sc_iot; 684 bus_space_handle_t ioh = sc->sc_ioh; 685 int i, len, serviced; 686 u_int16_t *ptr; 687 688 serviced = 0; 689 690 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 691 egreadPCB(iot, ioh, sc->eg_pcb); 692 switch (sc->eg_pcb[0]) { 693 case EG_RSP_RECVPACKET: 694 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 695 696 /* Set direction bit : Adapter -> host */ 697 bus_space_write_1(iot, ioh, EG_CONTROL, 698 bus_space_read_1(iot, ioh, EG_CONTROL) | EG_CTL_DIR); 699 700 for (ptr = (u_int16_t *) sc->eg_inbuf; 701 len > 0; len -= 2) { 702 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 703 EG_STAT_HRDY)) 704 ; 705 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 706 } 707 708 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 709 egread(sc, sc->eg_inbuf, len); 710 711 sc->eg_incount--; 712 egrecv(sc); 713 serviced = 1; 714 break; 715 716 case EG_RSP_SENDPACKET: 717 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 718 DPRINTF(("%s: packet dropped\n", 719 sc->sc_dev.dv_xname)); 720 sc->sc_ethercom.ec_if.if_oerrors++; 721 } else 722 sc->sc_ethercom.ec_if.if_opackets++; 723 sc->sc_ethercom.ec_if.if_collisions += 724 sc->eg_pcb[8] & 0xf; 725 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 726 egstart(&sc->sc_ethercom.ec_if); 727 serviced = 1; 728 break; 729 730 /* XXX byte-order and type-size bugs here... */ 731 case EG_RSP_GETSTATS: 732 DPRINTF(("%s: Card Statistics\n", 733 sc->sc_dev.dv_xname)); 734 memcpy(&i, &sc->eg_pcb[2], sizeof(i)); 735 DPRINTF(("Receive Packets %d\n", i)); 736 memcpy(&i, &sc->eg_pcb[6], sizeof(i)); 737 DPRINTF(("Transmit Packets %d\n", i)); 738 DPRINTF(("CRC errors %d\n", 739 *(short *) &sc->eg_pcb[10])); 740 DPRINTF(("alignment errors %d\n", 741 *(short *) &sc->eg_pcb[12])); 742 DPRINTF(("no resources errors %d\n", 743 *(short *) &sc->eg_pcb[14])); 744 DPRINTF(("overrun errors %d\n", 745 *(short *) &sc->eg_pcb[16])); 746 serviced = 1; 747 break; 748 749 default: 750 printf("%s: egintr: Unknown response %x??\n", 751 sc->sc_dev.dv_xname, sc->eg_pcb[0]); 752 egprintpcb(sc->eg_pcb); 753 break; 754 } 755 756 #if NRND > 0 757 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 758 #endif 759 } 760 761 return serviced; 762 } 763 764 /* 765 * Pass a packet up to the higher levels. 766 */ 767 void 768 egread(sc, buf, len) 769 struct eg_softc *sc; 770 caddr_t buf; 771 int len; 772 { 773 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 774 struct mbuf *m; 775 776 if (len <= sizeof(struct ether_header) || 777 len > ETHER_MAX_LEN) { 778 printf("%s: invalid packet size %d; dropping\n", 779 sc->sc_dev.dv_xname, len); 780 ifp->if_ierrors++; 781 return; 782 } 783 784 /* Pull packet off interface. */ 785 m = egget(sc, buf, len); 786 if (m == 0) { 787 ifp->if_ierrors++; 788 return; 789 } 790 791 ifp->if_ipackets++; 792 793 #if NBPFILTER > 0 794 /* 795 * Check if there's a BPF listener on this interface. 796 * If so, hand off the raw packet to BPF. 797 */ 798 if (ifp->if_bpf) 799 bpf_mtap(ifp->if_bpf, m); 800 #endif 801 802 (*ifp->if_input)(ifp, m); 803 } 804 805 /* 806 * convert buf into mbufs 807 */ 808 struct mbuf * 809 egget(sc, buf, totlen) 810 struct eg_softc *sc; 811 caddr_t buf; 812 int totlen; 813 { 814 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 815 struct mbuf *m, *m0, *newm; 816 int len; 817 818 MGETHDR(m0, M_DONTWAIT, MT_DATA); 819 if (m0 == 0) 820 return (0); 821 m0->m_pkthdr.rcvif = ifp; 822 m0->m_pkthdr.len = totlen; 823 len = MHLEN; 824 m = m0; 825 826 while (totlen > 0) { 827 if (totlen >= MINCLSIZE) { 828 MCLGET(m, M_DONTWAIT); 829 if ((m->m_flags & M_EXT) == 0) 830 goto bad; 831 len = MCLBYTES; 832 } 833 834 m->m_len = len = min(totlen, len); 835 memcpy(mtod(m, caddr_t), (caddr_t)buf, len); 836 buf += len; 837 838 totlen -= len; 839 if (totlen > 0) { 840 MGET(newm, M_DONTWAIT, MT_DATA); 841 if (newm == 0) 842 goto bad; 843 len = MLEN; 844 m = m->m_next = newm; 845 } 846 } 847 848 return (m0); 849 850 bad: 851 m_freem(m0); 852 return (0); 853 } 854 855 int 856 egioctl(ifp, cmd, data) 857 struct ifnet *ifp; 858 u_long cmd; 859 caddr_t data; 860 { 861 struct eg_softc *sc = ifp->if_softc; 862 struct ifaddr *ifa = (struct ifaddr *)data; 863 int s, error = 0; 864 865 s = splnet(); 866 867 switch (cmd) { 868 869 case SIOCSIFADDR: 870 ifp->if_flags |= IFF_UP; 871 872 switch (ifa->ifa_addr->sa_family) { 873 #ifdef INET 874 case AF_INET: 875 eginit(sc); 876 arp_ifinit(ifp, ifa); 877 break; 878 #endif 879 #ifdef NS 880 case AF_NS: 881 { 882 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 883 884 if (ns_nullhost(*ina)) 885 ina->x_host = 886 *(union ns_host *)LLADDR(ifp->if_sadl); 887 else 888 memcpy(LLADDR(ifp->if_sadl), ina->x_host.c_host, 889 ETHER_ADDR_LEN); 890 /* Set new address. */ 891 eginit(sc); 892 break; 893 } 894 #endif 895 default: 896 eginit(sc); 897 break; 898 } 899 break; 900 901 case SIOCSIFFLAGS: 902 if ((ifp->if_flags & IFF_UP) == 0 && 903 (ifp->if_flags & IFF_RUNNING) != 0) { 904 /* 905 * If interface is marked down and it is running, then 906 * stop it. 907 */ 908 egstop(sc); 909 ifp->if_flags &= ~IFF_RUNNING; 910 } else if ((ifp->if_flags & IFF_UP) != 0 && 911 (ifp->if_flags & IFF_RUNNING) == 0) { 912 /* 913 * If interface is marked up and it is stopped, then 914 * start it. 915 */ 916 eginit(sc); 917 } else { 918 sc->eg_pcb[0] = EG_CMD_GETSTATS; 919 sc->eg_pcb[1] = 0; 920 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 921 DPRINTF(("write error\n")); 922 /* 923 * XXX deal with flags changes: 924 * IFF_MULTICAST, IFF_PROMISC, 925 * IFF_LINK0, IFF_LINK1, 926 */ 927 } 928 break; 929 930 default: 931 error = EINVAL; 932 break; 933 } 934 935 splx(s); 936 return error; 937 } 938 939 void 940 egreset(sc) 941 struct eg_softc *sc; 942 { 943 int s; 944 945 DPRINTF(("%s: egreset()\n", sc->sc_dev.dv_xname)); 946 s = splnet(); 947 egstop(sc); 948 eginit(sc); 949 splx(s); 950 } 951 952 void 953 egwatchdog(ifp) 954 struct ifnet *ifp; 955 { 956 struct eg_softc *sc = ifp->if_softc; 957 958 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 959 sc->sc_ethercom.ec_if.if_oerrors++; 960 961 egreset(sc); 962 } 963 964 void 965 egstop(sc) 966 struct eg_softc *sc; 967 { 968 969 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 970 } 971
Indexes created Thu Oct 02 14:10:14 GMT 2025