Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/isa/if_eg.c
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1 /* $NetBSD: if_eg.c,v 1.62 2003/10/30 01:58:17 simonb Exp $ */ 2 3 /* 4 * Copyright (c) 1993 Dean Huxley <dean@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 1.62 2003/10/30 01:58:17 simonb 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; 276 277 bus_space_write_1(iot, ioh, EG_CONTROL, 278 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 279 280 memset(pcb, 0, EG_PCBLEN); 281 282 if (egreadPCBready(iot, ioh)) 283 return 1; 284 285 pcb[0] = bus_space_read_1(iot, ioh, EG_COMMAND); 286 287 if (egreadPCBready(iot, ioh)) 288 return 1; 289 290 pcb[1] = bus_space_read_1(iot, ioh, EG_COMMAND); 291 292 if (pcb[1] > 62) { 293 DPRINTF(("len %d too large\n", pcb[1])); 294 return 1; 295 } 296 297 for (i = 0; i < pcb[1]; i++) { 298 if (egreadPCBready(iot, ioh)) 299 return 1; 300 pcb[2+i] = bus_space_read_1(iot, ioh, EG_COMMAND); 301 } 302 if (egreadPCBready(iot, ioh)) 303 return 1; 304 if (egreadPCBstat(iot, ioh, EG_PCB_DONE)) 305 return 1; 306 if (bus_space_read_1(iot, ioh, EG_COMMAND) != pcb[1] + 2) { 307 DPRINTF(("%d != %d\n", b, pcb[1] + 2)); 308 return 1; 309 } 310 311 bus_space_write_1(iot, ioh, EG_CONTROL, 312 (bus_space_read_1(iot, ioh, EG_CONTROL) & 313 ~EG_PCB_STAT) | EG_PCB_ACCEPT); 314 315 return 0; 316 } 317 318 /* 319 * Real stuff 320 */ 321 322 int 323 egprobe(parent, match, aux) 324 struct device *parent; 325 struct cfdata *match; 326 void *aux; 327 { 328 struct isa_attach_args *ia = aux; 329 bus_space_tag_t iot = ia->ia_iot; 330 bus_space_handle_t ioh; 331 int i, rval; 332 static u_int8_t pcb[EG_PCBLEN]; 333 334 rval = 0; 335 336 if (ia->ia_nio < 1) 337 return (0); 338 if (ia->ia_nirq < 1) 339 return (0); 340 341 if (ISA_DIRECT_CONFIG(ia)) 342 return (0); 343 344 /* Disallow wildcarded i/o address. */ 345 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 346 return (0); 347 348 /* Disallow wildcarded IRQ. */ 349 if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) 350 return (0); 351 352 if ((ia->ia_io[0].ir_addr & ~0x07f0) != 0) { 353 DPRINTF(("Weird iobase %x\n", ia->ia_io[0].ir_addr)); 354 return 0; 355 } 356 357 /* Map i/o space. */ 358 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 359 DPRINTF(("egprobe: can't map i/o space in probe\n")); 360 return 0; 361 } 362 363 /* hard reset card */ 364 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_RESET); 365 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 366 for (i = 0; i < 5000; i++) { 367 delay(1000); 368 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 369 EG_PCB_STAT) == EG_PCB_NULL) 370 break; 371 } 372 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) { 373 DPRINTF(("egprobe: Reset failed\n")); 374 goto out; 375 } 376 pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 377 pcb[1] = 0; 378 if (egwritePCB(iot, ioh, pcb) != 0) 379 goto out; 380 381 if ((egreadPCB(iot, ioh, pcb) != 0) || 382 pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 383 pcb[1] != 0x0a) { 384 egprintpcb(pcb); 385 goto out; 386 } 387 388 ia->ia_nio = 1; 389 ia->ia_io[0].ir_size = 0x08; 390 391 ia->ia_nirq = 1; 392 393 ia->ia_niomem = 0; 394 ia->ia_ndrq = 0; 395 396 rval = 1; 397 398 out: 399 bus_space_unmap(iot, ioh, 0x08); 400 return rval; 401 } 402 403 void 404 egattach(parent, self, aux) 405 struct device *parent, *self; 406 void *aux; 407 { 408 struct eg_softc *sc = (void *)self; 409 struct isa_attach_args *ia = aux; 410 bus_space_tag_t iot = ia->ia_iot; 411 bus_space_handle_t ioh; 412 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 413 u_int8_t myaddr[ETHER_ADDR_LEN]; 414 415 printf("\n"); 416 417 /* Map i/o space. */ 418 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 419 printf("%s: can't map i/o space\n", self->dv_xname); 420 return; 421 } 422 423 sc->sc_iot = iot; 424 sc->sc_ioh = ioh; 425 426 sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 427 sc->eg_pcb[1] = 0; 428 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 429 printf("%s: error requesting adapter info\n", self->dv_xname); 430 return; 431 } 432 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 433 egprintpcb(sc->eg_pcb); 434 printf("%s: error reading adapter info\n", self->dv_xname); 435 return; 436 } 437 438 if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 439 sc->eg_pcb[1] != 0x0a) { 440 egprintpcb(sc->eg_pcb); 441 printf("%s: bogus adapter info\n", self->dv_xname); 442 return; 443 } 444 445 sc->eg_rom_major = sc->eg_pcb[3]; 446 sc->eg_rom_minor = sc->eg_pcb[2]; 447 sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 448 449 egstop(sc); 450 451 sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ 452 sc->eg_pcb[1] = 0; 453 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 454 printf("%s: can't send Get Station Address\n", self->dv_xname); 455 return; 456 } 457 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 458 printf("%s: can't read station address\n", self->dv_xname); 459 egprintpcb(sc->eg_pcb); 460 return; 461 } 462 463 /* check Get station address response */ 464 if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { 465 printf("%s: card responded with garbage (1)\n", 466 self->dv_xname); 467 egprintpcb(sc->eg_pcb); 468 return; 469 } 470 memcpy(myaddr, &sc->eg_pcb[2], ETHER_ADDR_LEN); 471 472 printf("%s: ROM v%d.%02d %dk address %s\n", self->dv_xname, 473 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 474 ether_sprintf(myaddr)); 475 476 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 477 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 478 printf("%s: can't send Set Station Address\n", self->dv_xname); 479 return; 480 } 481 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 482 printf("%s: can't read Set Station Address status\n", 483 self->dv_xname); 484 egprintpcb(sc->eg_pcb); 485 return; 486 } 487 if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || 488 sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { 489 printf("%s: card responded with garbage (2)\n", 490 self->dv_xname); 491 egprintpcb(sc->eg_pcb); 492 return; 493 } 494 495 /* Initialize ifnet structure. */ 496 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 497 ifp->if_softc = sc; 498 ifp->if_start = egstart; 499 ifp->if_ioctl = egioctl; 500 ifp->if_watchdog = egwatchdog; 501 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 502 IFQ_SET_READY(&ifp->if_snd); 503 504 /* Now we can attach the interface. */ 505 if_attach(ifp); 506 ether_ifattach(ifp, myaddr); 507 508 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 509 IST_EDGE, IPL_NET, egintr, sc); 510 511 #if NRND > 0 512 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 513 RND_TYPE_NET, 0); 514 #endif 515 } 516 517 void 518 eginit(sc) 519 struct eg_softc *sc; 520 { 521 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 522 bus_space_tag_t iot = sc->sc_iot; 523 bus_space_handle_t ioh = sc->sc_ioh; 524 525 /* soft reset the board */ 526 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_FLSH); 527 delay(100); 528 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_ATTN); 529 delay(100); 530 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 531 delay(200); 532 533 sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ 534 sc->eg_pcb[1] = 2; 535 sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ 536 sc->eg_pcb[3] = 0; 537 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) 538 printf("%s: can't send Configure 82586\n", 539 sc->sc_dev.dv_xname); 540 541 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 542 printf("%s: can't read Configure 82586 status\n", 543 sc->sc_dev.dv_xname); 544 egprintpcb(sc->eg_pcb); 545 } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) 546 printf("%s: configure card command failed\n", 547 sc->sc_dev.dv_xname); 548 549 if (sc->eg_inbuf == NULL) { 550 sc->eg_inbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 551 if (sc->eg_inbuf == NULL) { 552 printf("%s: can't allocate inbuf\n", 553 sc->sc_dev.dv_xname); 554 panic("eginit"); 555 } 556 } 557 sc->eg_incount = 0; 558 559 if (sc->eg_outbuf == NULL) { 560 sc->eg_outbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 561 if (sc->eg_outbuf == NULL) { 562 printf("%s: can't allocate outbuf\n", 563 sc->sc_dev.dv_xname); 564 panic("eginit"); 565 } 566 } 567 568 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_CMDE); 569 570 sc->eg_incount = 0; 571 egrecv(sc); 572 573 /* Interface is now `running', with no output active. */ 574 ifp->if_flags |= IFF_RUNNING; 575 ifp->if_flags &= ~IFF_OACTIVE; 576 577 /* Attempt to start output, if any. */ 578 egstart(ifp); 579 } 580 581 void 582 egrecv(sc) 583 struct eg_softc *sc; 584 { 585 586 while (sc->eg_incount < EG_INLEN) { 587 sc->eg_pcb[0] = EG_CMD_RECVPACKET; 588 sc->eg_pcb[1] = 0x08; 589 sc->eg_pcb[2] = 0; /* address not used.. we send zero */ 590 sc->eg_pcb[3] = 0; 591 sc->eg_pcb[4] = 0; 592 sc->eg_pcb[5] = 0; 593 sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ 594 sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; 595 sc->eg_pcb[8] = 0; /* timeout, 0 == none */ 596 sc->eg_pcb[9] = 0; 597 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 598 break; 599 sc->eg_incount++; 600 } 601 } 602 603 void 604 egstart(ifp) 605 struct ifnet *ifp; 606 { 607 struct eg_softc *sc = ifp->if_softc; 608 bus_space_tag_t iot = sc->sc_iot; 609 bus_space_handle_t ioh = sc->sc_ioh; 610 struct mbuf *m0, *m; 611 caddr_t buffer; 612 int len; 613 u_int16_t *ptr; 614 615 /* Don't transmit if interface is busy or not running */ 616 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 617 return; 618 619 loop: 620 /* Dequeue the next datagram. */ 621 IFQ_DEQUEUE(&ifp->if_snd, m0); 622 if (m0 == 0) 623 return; 624 625 ifp->if_flags |= IFF_OACTIVE; 626 627 /* We need to use m->m_pkthdr.len, so require the header */ 628 if ((m0->m_flags & M_PKTHDR) == 0) { 629 printf("%s: no header mbuf\n", sc->sc_dev.dv_xname); 630 panic("egstart"); 631 } 632 len = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN); 633 634 #if NBPFILTER > 0 635 if (ifp->if_bpf) 636 bpf_mtap(ifp->if_bpf, m0); 637 #endif 638 639 sc->eg_pcb[0] = EG_CMD_SENDPACKET; 640 sc->eg_pcb[1] = 0x06; 641 sc->eg_pcb[2] = 0; /* address not used, we send zero */ 642 sc->eg_pcb[3] = 0; 643 sc->eg_pcb[4] = 0; 644 sc->eg_pcb[5] = 0; 645 sc->eg_pcb[6] = len; /* length of packet */ 646 sc->eg_pcb[7] = len >> 8; 647 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 648 printf("%s: can't send Send Packet command\n", 649 sc->sc_dev.dv_xname); 650 ifp->if_oerrors++; 651 ifp->if_flags &= ~IFF_OACTIVE; 652 m_freem(m0); 653 goto loop; 654 } 655 656 buffer = sc->eg_outbuf; 657 for (m = m0; m != 0; m = m->m_next) { 658 memcpy(buffer, mtod(m, caddr_t), m->m_len); 659 buffer += m->m_len; 660 } 661 if (len > m0->m_pkthdr.len) 662 memset(buffer, 0, len - m0->m_pkthdr.len); 663 664 /* set direction bit: host -> adapter */ 665 bus_space_write_1(iot, ioh, EG_CONTROL, 666 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 667 668 for (ptr = (u_int16_t *) sc->eg_outbuf; len > 0; len -= 2) { 669 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 670 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 671 ; /* XXX need timeout here */ 672 } 673 674 m_freem(m0); 675 } 676 677 int 678 egintr(arg) 679 void *arg; 680 { 681 struct eg_softc *sc = arg; 682 bus_space_tag_t iot = sc->sc_iot; 683 bus_space_handle_t ioh = sc->sc_ioh; 684 int i, len, serviced; 685 u_int16_t *ptr; 686 687 serviced = 0; 688 689 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 690 egreadPCB(iot, ioh, sc->eg_pcb); 691 switch (sc->eg_pcb[0]) { 692 case EG_RSP_RECVPACKET: 693 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 694 695 /* Set direction bit : Adapter -> host */ 696 bus_space_write_1(iot, ioh, EG_CONTROL, 697 bus_space_read_1(iot, ioh, EG_CONTROL) | EG_CTL_DIR); 698 699 for (ptr = (u_int16_t *) sc->eg_inbuf; 700 len > 0; len -= 2) { 701 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 702 EG_STAT_HRDY)) 703 ; 704 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 705 } 706 707 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 708 egread(sc, sc->eg_inbuf, len); 709 710 sc->eg_incount--; 711 egrecv(sc); 712 serviced = 1; 713 break; 714 715 case EG_RSP_SENDPACKET: 716 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 717 DPRINTF(("%s: packet dropped\n", 718 sc->sc_dev.dv_xname)); 719 sc->sc_ethercom.ec_if.if_oerrors++; 720 } else 721 sc->sc_ethercom.ec_if.if_opackets++; 722 sc->sc_ethercom.ec_if.if_collisions += 723 sc->eg_pcb[8] & 0xf; 724 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 725 egstart(&sc->sc_ethercom.ec_if); 726 serviced = 1; 727 break; 728 729 /* XXX byte-order and type-size bugs here... */ 730 case EG_RSP_GETSTATS: 731 DPRINTF(("%s: Card Statistics\n", 732 sc->sc_dev.dv_xname)); 733 memcpy(&i, &sc->eg_pcb[2], sizeof(i)); 734 DPRINTF(("Receive Packets %d\n", i)); 735 memcpy(&i, &sc->eg_pcb[6], sizeof(i)); 736 DPRINTF(("Transmit Packets %d\n", i)); 737 DPRINTF(("CRC errors %d\n", 738 *(short *) &sc->eg_pcb[10])); 739 DPRINTF(("alignment errors %d\n", 740 *(short *) &sc->eg_pcb[12])); 741 DPRINTF(("no resources errors %d\n", 742 *(short *) &sc->eg_pcb[14])); 743 DPRINTF(("overrun errors %d\n", 744 *(short *) &sc->eg_pcb[16])); 745 serviced = 1; 746 break; 747 748 default: 749 printf("%s: egintr: Unknown response %x??\n", 750 sc->sc_dev.dv_xname, sc->eg_pcb[0]); 751 egprintpcb(sc->eg_pcb); 752 break; 753 } 754 755 #if NRND > 0 756 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 757 #endif 758 } 759 760 return serviced; 761 } 762 763 /* 764 * Pass a packet up to the higher levels. 765 */ 766 void 767 egread(sc, buf, len) 768 struct eg_softc *sc; 769 caddr_t buf; 770 int len; 771 { 772 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 773 struct mbuf *m; 774 775 if (len <= sizeof(struct ether_header) || 776 len > ETHER_MAX_LEN) { 777 printf("%s: invalid packet size %d; dropping\n", 778 sc->sc_dev.dv_xname, len); 779 ifp->if_ierrors++; 780 return; 781 } 782 783 /* Pull packet off interface. */ 784 m = egget(sc, buf, len); 785 if (m == 0) { 786 ifp->if_ierrors++; 787 return; 788 } 789 790 ifp->if_ipackets++; 791 792 #if NBPFILTER > 0 793 /* 794 * Check if there's a BPF listener on this interface. 795 * If so, hand off the raw packet to BPF. 796 */ 797 if (ifp->if_bpf) 798 bpf_mtap(ifp->if_bpf, m); 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 memcpy(mtod(m, caddr_t), (caddr_t)buf, 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 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 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 memcpy(LLADDR(ifp->if_sadl), ina->x_host.c_host, 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 struct eg_softc *sc; 966 { 967 968 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 969 }
Cache object: 24089fa87033abe48c59c900e22b008d
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