if_eg.c revision 1.75
1 /* $NetBSD: if_eg.c,v 1.75 2008/03/30 15:27:24 ad 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 1.75 2008/03/30 15:27:24 ad Exp $"); 44 45 #include "opt_inet.h" 46 #include "bpfilter.h" 47 #include "rnd.h" 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/mbuf.h> 52 #include <sys/socket.h> 53 #include <sys/ioctl.h> 54 #include <sys/errno.h> 55 #include <sys/syslog.h> 56 #include <sys/select.h> 57 #include <sys/device.h> 58 #if NRND > 0 59 #include <sys/rnd.h> 60 #endif 61 62 #include <net/if.h> 63 #include <net/if_dl.h> 64 #include <net/if_types.h> 65 66 #include <net/if_ether.h> 67 68 #ifdef INET 69 #include <netinet/in.h> 70 #include <netinet/in_systm.h> 71 #include <netinet/in_var.h> 72 #include <netinet/ip.h> 73 #include <netinet/if_inarp.h> 74 #endif 75 76 77 #if NBPFILTER > 0 78 #include <net/bpf.h> 79 #include <net/bpfdesc.h> 80 #endif 81 82 #include <sys/cpu.h> 83 #include <sys/intr.h> 84 #include <sys/bus.h> 85 86 #include <dev/isa/isavar.h> 87 #include <dev/isa/if_egreg.h> 88 #include <dev/isa/elink.h> 89 90 /* for debugging convenience */ 91 #ifdef EGDEBUG 92 #define DPRINTF(x) printf x 93 #else 94 #define DPRINTF(x) 95 #endif 96 97 #define EG_INLEN 10 98 #define EG_BUFLEN 0x0670 99 100 #define EG_PCBLEN 64 101 102 /* 103 * Ethernet software status per interface. 104 */ 105 struct eg_softc { 106 struct device sc_dev; 107 void *sc_ih; 108 struct ethercom sc_ethercom; /* Ethernet common part */ 109 bus_space_tag_t sc_iot; /* bus space identifier */ 110 bus_space_handle_t sc_ioh; /* i/o handle */ 111 u_int8_t eg_rom_major; /* Cards ROM version (major number) */ 112 u_int8_t eg_rom_minor; /* Cards ROM version (minor number) */ 113 short eg_ram; /* Amount of RAM on the card */ 114 u_int8_t eg_pcb[EG_PCBLEN]; /* Primary Command Block buffer */ 115 u_int8_t eg_incount; /* Number of buffers currently used */ 116 void * eg_inbuf; /* Incoming packet buffer */ 117 void * eg_outbuf; /* Outgoing packet buffer */ 118 119 #if NRND > 0 120 rndsource_element_t rnd_source; 121 #endif 122 }; 123 124 int egprobe(struct device *, struct cfdata *, void *); 125 void egattach(struct device *, struct device *, void *); 126 127 CFATTACH_DECL(eg, sizeof(struct eg_softc), 128 egprobe, egattach, NULL, NULL); 129 130 int egintr(void *); 131 void eginit(struct eg_softc *); 132 int egioctl(struct ifnet *, u_long, void *); 133 void egrecv(struct eg_softc *); 134 void egstart(struct ifnet *); 135 void egwatchdog(struct ifnet *); 136 void egreset(struct eg_softc *); 137 void egread(struct eg_softc *, void *, int); 138 struct mbuf *egget(struct eg_softc *, void *, int); 139 void egstop(struct eg_softc *); 140 141 static inline void egprintpcb(u_int8_t *); 142 static inline void egprintstat(u_char); 143 static int egoutPCB(bus_space_tag_t, bus_space_handle_t, u_int8_t); 144 static int egreadPCBstat(bus_space_tag_t, bus_space_handle_t, u_int8_t); 145 static int egreadPCBready(bus_space_tag_t, bus_space_handle_t); 146 static int egwritePCB(bus_space_tag_t, bus_space_handle_t, u_int8_t *); 147 static int egreadPCB(bus_space_tag_t, bus_space_handle_t, u_int8_t *); 148 149 /* 150 * Support stuff 151 */ 152 153 static inline void 154 egprintpcb(pcb) 155 u_int8_t *pcb; 156 { 157 int i; 158 159 for (i = 0; i < pcb[1] + 2; i++) 160 DPRINTF(("pcb[%2d] = %x\n", i, pcb[i])); 161 } 162 163 164 static inline void 165 egprintstat(u_char b) 166 { 167 DPRINTF(("%s %s %s %s %s %s %s\n", 168 (b & EG_STAT_HCRE)?"HCRE":"", 169 (b & EG_STAT_ACRF)?"ACRF":"", 170 (b & EG_STAT_DIR )?"DIR ":"", 171 (b & EG_STAT_DONE)?"DONE":"", 172 (b & EG_STAT_ASF3)?"ASF3":"", 173 (b & EG_STAT_ASF2)?"ASF2":"", 174 (b & EG_STAT_ASF1)?"ASF1":"")); 175 } 176 177 static int 178 egoutPCB(iot, ioh, b) 179 bus_space_tag_t iot; 180 bus_space_handle_t ioh; 181 u_int8_t b; 182 { 183 int i; 184 185 for (i=0; i < 4000; i++) { 186 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) { 187 bus_space_write_1(iot, ioh, EG_COMMAND, b); 188 return 0; 189 } 190 delay(10); 191 } 192 DPRINTF(("egoutPCB failed\n")); 193 return 1; 194 } 195 196 static int 197 egreadPCBstat(iot, ioh, statb) 198 bus_space_tag_t iot; 199 bus_space_handle_t ioh; 200 u_int8_t statb; 201 { 202 int i; 203 204 for (i=0; i < 5000; i++) { 205 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 206 EG_PCB_STAT) != EG_PCB_NULL) 207 break; 208 delay(10); 209 } 210 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) == statb) 211 return 0; 212 return 1; 213 } 214 215 static int 216 egreadPCBready(iot, ioh) 217 bus_space_tag_t iot; 218 bus_space_handle_t ioh; 219 { 220 int i; 221 222 for (i=0; i < 10000; i++) { 223 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) 224 return 0; 225 delay(5); 226 } 227 DPRINTF(("PCB read not ready\n")); 228 return 1; 229 } 230 231 static int 232 egwritePCB(iot, ioh, pcb) 233 bus_space_tag_t iot; 234 bus_space_handle_t ioh; 235 u_int8_t *pcb; 236 { 237 int i; 238 u_int8_t len; 239 240 bus_space_write_1(iot, ioh, EG_CONTROL, 241 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 242 243 len = pcb[1] + 2; 244 for (i = 0; i < len; i++) 245 egoutPCB(iot, ioh, pcb[i]); 246 247 for (i=0; i < 4000; i++) { 248 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) 249 break; 250 delay(10); 251 } 252 253 bus_space_write_1(iot, ioh, EG_CONTROL, 254 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_DONE); 255 256 egoutPCB(iot, ioh, len); 257 258 if (egreadPCBstat(iot, ioh, EG_PCB_ACCEPT)) 259 return 1; 260 return 0; 261 } 262 263 static int 264 egreadPCB(iot, ioh, pcb) 265 bus_space_tag_t iot; 266 bus_space_handle_t ioh; 267 u_int8_t *pcb; 268 { 269 int i; 270 271 bus_space_write_1(iot, ioh, EG_CONTROL, 272 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 273 274 memset(pcb, 0, EG_PCBLEN); 275 276 if (egreadPCBready(iot, ioh)) 277 return 1; 278 279 pcb[0] = bus_space_read_1(iot, ioh, EG_COMMAND); 280 281 if (egreadPCBready(iot, ioh)) 282 return 1; 283 284 pcb[1] = bus_space_read_1(iot, ioh, EG_COMMAND); 285 286 if (pcb[1] > 62) { 287 DPRINTF(("len %d too large\n", pcb[1])); 288 return 1; 289 } 290 291 for (i = 0; i < pcb[1]; i++) { 292 if (egreadPCBready(iot, ioh)) 293 return 1; 294 pcb[2+i] = bus_space_read_1(iot, ioh, EG_COMMAND); 295 } 296 if (egreadPCBready(iot, ioh)) 297 return 1; 298 if (egreadPCBstat(iot, ioh, EG_PCB_DONE)) 299 return 1; 300 if (bus_space_read_1(iot, ioh, EG_COMMAND) != pcb[1] + 2) { 301 return 1; 302 } 303 304 bus_space_write_1(iot, ioh, EG_CONTROL, 305 (bus_space_read_1(iot, ioh, EG_CONTROL) & 306 ~EG_PCB_STAT) | EG_PCB_ACCEPT); 307 308 return 0; 309 } 310 311 /* 312 * Real stuff 313 */ 314 315 int 316 egprobe(struct device *parent, struct cfdata *match, 317 void *aux) 318 { 319 struct isa_attach_args *ia = aux; 320 bus_space_tag_t iot = ia->ia_iot; 321 bus_space_handle_t ioh; 322 int i, rval; 323 static u_int8_t pcb[EG_PCBLEN]; 324 325 rval = 0; 326 327 /* 328 * XXX This probe is slow. If there are no ISA expansion slots, 329 * then skip it. 330 */ 331 if (isa_get_slotcount() == 0) 332 return (0); 333 334 if (ia->ia_nio < 1) 335 return (0); 336 if (ia->ia_nirq < 1) 337 return (0); 338 339 if (ISA_DIRECT_CONFIG(ia)) 340 return (0); 341 342 /* Disallow wildcarded i/o address. */ 343 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 344 return (0); 345 346 /* Disallow wildcarded IRQ. */ 347 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 348 return (0); 349 350 if ((ia->ia_io[0].ir_addr & ~0x07f0) != 0) { 351 DPRINTF(("Weird iobase %x\n", ia->ia_io[0].ir_addr)); 352 return 0; 353 } 354 355 /* Map i/o space. */ 356 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 357 DPRINTF(("egprobe: can't map i/o space in probe\n")); 358 return 0; 359 } 360 361 /* hard reset card */ 362 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_RESET); 363 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 364 for (i = 0; i < 500; i++) { 365 delay(1000); 366 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 367 EG_PCB_STAT) == EG_PCB_NULL) 368 break; 369 } 370 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) { 371 DPRINTF(("egprobe: Reset failed\n")); 372 goto out; 373 } 374 pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 375 pcb[1] = 0; 376 if (egwritePCB(iot, ioh, pcb) != 0) 377 goto out; 378 379 if ((egreadPCB(iot, ioh, pcb) != 0) || 380 pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 381 pcb[1] != 0x0a) { 382 egprintpcb(pcb); 383 goto out; 384 } 385 386 ia->ia_nio = 1; 387 ia->ia_io[0].ir_size = 0x08; 388 389 ia->ia_nirq = 1; 390 391 ia->ia_niomem = 0; 392 ia->ia_ndrq = 0; 393 394 rval = 1; 395 396 out: 397 bus_space_unmap(iot, ioh, 0x08); 398 return rval; 399 } 400 401 void 402 egattach(struct device *parent, struct device *self, void *aux) 403 { 404 struct eg_softc *sc = (void *)self; 405 struct isa_attach_args *ia = aux; 406 bus_space_tag_t iot = ia->ia_iot; 407 bus_space_handle_t ioh; 408 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 409 u_int8_t myaddr[ETHER_ADDR_LEN]; 410 411 printf("\n"); 412 413 /* Map i/o space. */ 414 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 415 printf("%s: can't map i/o space\n", self->dv_xname); 416 return; 417 } 418 419 sc->sc_iot = iot; 420 sc->sc_ioh = ioh; 421 422 sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 423 sc->eg_pcb[1] = 0; 424 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 425 printf("%s: error requesting adapter info\n", self->dv_xname); 426 return; 427 } 428 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 429 egprintpcb(sc->eg_pcb); 430 printf("%s: error reading adapter info\n", self->dv_xname); 431 return; 432 } 433 434 if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 435 sc->eg_pcb[1] != 0x0a) { 436 egprintpcb(sc->eg_pcb); 437 printf("%s: bogus adapter info\n", self->dv_xname); 438 return; 439 } 440 441 sc->eg_rom_major = sc->eg_pcb[3]; 442 sc->eg_rom_minor = sc->eg_pcb[2]; 443 sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 444 445 egstop(sc); 446 447 sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ 448 sc->eg_pcb[1] = 0; 449 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 450 printf("%s: can't send Get Station Address\n", self->dv_xname); 451 return; 452 } 453 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 454 printf("%s: can't read station address\n", self->dv_xname); 455 egprintpcb(sc->eg_pcb); 456 return; 457 } 458 459 /* check Get station address response */ 460 if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { 461 printf("%s: card responded with garbage (1)\n", 462 self->dv_xname); 463 egprintpcb(sc->eg_pcb); 464 return; 465 } 466 memcpy(myaddr, &sc->eg_pcb[2], ETHER_ADDR_LEN); 467 468 printf("%s: ROM v%d.%02d %dk address %s\n", self->dv_xname, 469 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 470 ether_sprintf(myaddr)); 471 472 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 473 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 474 printf("%s: can't send Set Station Address\n", self->dv_xname); 475 return; 476 } 477 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 478 printf("%s: can't read Set Station Address status\n", 479 self->dv_xname); 480 egprintpcb(sc->eg_pcb); 481 return; 482 } 483 if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || 484 sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { 485 printf("%s: card responded with garbage (2)\n", 486 self->dv_xname); 487 egprintpcb(sc->eg_pcb); 488 return; 489 } 490 491 /* Initialize ifnet structure. */ 492 strcpy(ifp->if_xname, sc->sc_dev.dv_xname); 493 ifp->if_softc = sc; 494 ifp->if_start = egstart; 495 ifp->if_ioctl = egioctl; 496 ifp->if_watchdog = egwatchdog; 497 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 498 IFQ_SET_READY(&ifp->if_snd); 499 500 /* Now we can attach the interface. */ 501 if_attach(ifp); 502 ether_ifattach(ifp, myaddr); 503 504 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 505 IST_EDGE, IPL_NET, egintr, sc); 506 507 #if NRND > 0 508 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, 509 RND_TYPE_NET, 0); 510 #endif 511 } 512 513 void 514 eginit(sc) 515 struct eg_softc *sc; 516 { 517 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 518 bus_space_tag_t iot = sc->sc_iot; 519 bus_space_handle_t ioh = sc->sc_ioh; 520 521 /* soft reset the board */ 522 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_FLSH); 523 delay(100); 524 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_ATTN); 525 delay(100); 526 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 527 delay(200); 528 529 sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ 530 sc->eg_pcb[1] = 2; 531 sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ 532 sc->eg_pcb[3] = 0; 533 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) 534 printf("%s: can't send Configure 82586\n", 535 sc->sc_dev.dv_xname); 536 537 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 538 printf("%s: can't read Configure 82586 status\n", 539 sc->sc_dev.dv_xname); 540 egprintpcb(sc->eg_pcb); 541 } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) 542 printf("%s: configure card command failed\n", 543 sc->sc_dev.dv_xname); 544 545 if (sc->eg_inbuf == NULL) { 546 sc->eg_inbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 547 if (sc->eg_inbuf == NULL) { 548 printf("%s: can't allocate inbuf\n", 549 sc->sc_dev.dv_xname); 550 panic("eginit"); 551 } 552 } 553 sc->eg_incount = 0; 554 555 if (sc->eg_outbuf == NULL) { 556 sc->eg_outbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 557 if (sc->eg_outbuf == NULL) { 558 printf("%s: can't allocate outbuf\n", 559 sc->sc_dev.dv_xname); 560 panic("eginit"); 561 } 562 } 563 564 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_CMDE); 565 566 sc->eg_incount = 0; 567 egrecv(sc); 568 569 /* Interface is now `running', with no output active. */ 570 ifp->if_flags |= IFF_RUNNING; 571 ifp->if_flags &= ~IFF_OACTIVE; 572 573 /* Attempt to start output, if any. */ 574 egstart(ifp); 575 } 576 577 void 578 egrecv(sc) 579 struct eg_softc *sc; 580 { 581 582 while (sc->eg_incount < EG_INLEN) { 583 sc->eg_pcb[0] = EG_CMD_RECVPACKET; 584 sc->eg_pcb[1] = 0x08; 585 sc->eg_pcb[2] = 0; /* address not used.. we send zero */ 586 sc->eg_pcb[3] = 0; 587 sc->eg_pcb[4] = 0; 588 sc->eg_pcb[5] = 0; 589 sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ 590 sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; 591 sc->eg_pcb[8] = 0; /* timeout, 0 == none */ 592 sc->eg_pcb[9] = 0; 593 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 594 break; 595 sc->eg_incount++; 596 } 597 } 598 599 void 600 egstart(ifp) 601 struct ifnet *ifp; 602 { 603 struct eg_softc *sc = ifp->if_softc; 604 bus_space_tag_t iot = sc->sc_iot; 605 bus_space_handle_t ioh = sc->sc_ioh; 606 struct mbuf *m0, *m; 607 char *buffer; 608 int len; 609 u_int16_t *ptr; 610 611 /* Don't transmit if interface is busy or not running */ 612 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 613 return; 614 615 loop: 616 /* Dequeue the next datagram. */ 617 IFQ_DEQUEUE(&ifp->if_snd, m0); 618 if (m0 == 0) 619 return; 620 621 ifp->if_flags |= IFF_OACTIVE; 622 623 /* We need to use m->m_pkthdr.len, so require the header */ 624 if ((m0->m_flags & M_PKTHDR) == 0) { 625 printf("%s: no header mbuf\n", sc->sc_dev.dv_xname); 626 panic("egstart"); 627 } 628 len = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN); 629 630 #if NBPFILTER > 0 631 if (ifp->if_bpf) 632 bpf_mtap(ifp->if_bpf, m0); 633 #endif 634 635 sc->eg_pcb[0] = EG_CMD_SENDPACKET; 636 sc->eg_pcb[1] = 0x06; 637 sc->eg_pcb[2] = 0; /* address not used, we send zero */ 638 sc->eg_pcb[3] = 0; 639 sc->eg_pcb[4] = 0; 640 sc->eg_pcb[5] = 0; 641 sc->eg_pcb[6] = len; /* length of packet */ 642 sc->eg_pcb[7] = len >> 8; 643 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 644 printf("%s: can't send Send Packet command\n", 645 sc->sc_dev.dv_xname); 646 ifp->if_oerrors++; 647 ifp->if_flags &= ~IFF_OACTIVE; 648 m_freem(m0); 649 goto loop; 650 } 651 652 buffer = sc->eg_outbuf; 653 for (m = m0; m != 0; m = m->m_next) { 654 memcpy(buffer, mtod(m, void *), m->m_len); 655 buffer += m->m_len; 656 } 657 if (len > m0->m_pkthdr.len) 658 memset(buffer, 0, len - m0->m_pkthdr.len); 659 660 /* set direction bit: host -> adapter */ 661 bus_space_write_1(iot, ioh, EG_CONTROL, 662 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 663 664 for (ptr = (u_int16_t *) sc->eg_outbuf; len > 0; len -= 2) { 665 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 666 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 667 ; /* XXX need timeout here */ 668 } 669 670 m_freem(m0); 671 } 672 673 int 674 egintr(arg) 675 void *arg; 676 { 677 struct eg_softc *sc = arg; 678 bus_space_tag_t iot = sc->sc_iot; 679 bus_space_handle_t ioh = sc->sc_ioh; 680 int i, len, serviced; 681 u_int16_t *ptr; 682 683 serviced = 0; 684 685 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 686 egreadPCB(iot, ioh, sc->eg_pcb); 687 switch (sc->eg_pcb[0]) { 688 case EG_RSP_RECVPACKET: 689 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 690 691 /* Set direction bit : Adapter -> host */ 692 bus_space_write_1(iot, ioh, EG_CONTROL, 693 bus_space_read_1(iot, ioh, EG_CONTROL) | EG_CTL_DIR); 694 695 for (ptr = (u_int16_t *) sc->eg_inbuf; 696 len > 0; len -= 2) { 697 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 698 EG_STAT_HRDY)) 699 ; 700 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 701 } 702 703 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 704 egread(sc, sc->eg_inbuf, len); 705 706 sc->eg_incount--; 707 egrecv(sc); 708 serviced = 1; 709 break; 710 711 case EG_RSP_SENDPACKET: 712 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 713 DPRINTF(("%s: packet dropped\n", 714 sc->sc_dev.dv_xname)); 715 sc->sc_ethercom.ec_if.if_oerrors++; 716 } else 717 sc->sc_ethercom.ec_if.if_opackets++; 718 sc->sc_ethercom.ec_if.if_collisions += 719 sc->eg_pcb[8] & 0xf; 720 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 721 egstart(&sc->sc_ethercom.ec_if); 722 serviced = 1; 723 break; 724 725 /* XXX byte-order and type-size bugs here... */ 726 case EG_RSP_GETSTATS: 727 DPRINTF(("%s: Card Statistics\n", 728 sc->sc_dev.dv_xname)); 729 memcpy(&i, &sc->eg_pcb[2], sizeof(i)); 730 DPRINTF(("Receive Packets %d\n", i)); 731 memcpy(&i, &sc->eg_pcb[6], sizeof(i)); 732 DPRINTF(("Transmit Packets %d\n", i)); 733 DPRINTF(("CRC errors %d\n", 734 *(short *) &sc->eg_pcb[10])); 735 DPRINTF(("alignment errors %d\n", 736 *(short *) &sc->eg_pcb[12])); 737 DPRINTF(("no resources errors %d\n", 738 *(short *) &sc->eg_pcb[14])); 739 DPRINTF(("overrun errors %d\n", 740 *(short *) &sc->eg_pcb[16])); 741 serviced = 1; 742 break; 743 744 default: 745 printf("%s: egintr: Unknown response %x??\n", 746 sc->sc_dev.dv_xname, sc->eg_pcb[0]); 747 egprintpcb(sc->eg_pcb); 748 break; 749 } 750 751 #if NRND > 0 752 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 753 #endif 754 } 755 756 return serviced; 757 } 758 759 /* 760 * Pass a packet up to the higher levels. 761 */ 762 void 763 egread(sc, buf, len) 764 struct eg_softc *sc; 765 void *buf; 766 int len; 767 { 768 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 769 struct mbuf *m; 770 771 if (len <= sizeof(struct ether_header) || 772 len > ETHER_MAX_LEN) { 773 printf("%s: invalid packet size %d; dropping\n", 774 sc->sc_dev.dv_xname, len); 775 ifp->if_ierrors++; 776 return; 777 } 778 779 /* Pull packet off interface. */ 780 m = egget(sc, buf, len); 781 if (m == 0) { 782 ifp->if_ierrors++; 783 return; 784 } 785 786 ifp->if_ipackets++; 787 788 #if NBPFILTER > 0 789 /* 790 * Check if there's a BPF listener on this interface. 791 * If so, hand off the raw packet to BPF. 792 */ 793 if (ifp->if_bpf) 794 bpf_mtap(ifp->if_bpf, m); 795 #endif 796 797 (*ifp->if_input)(ifp, m); 798 } 799 800 /* 801 * convert buf into mbufs 802 */ 803 struct mbuf * 804 egget(sc, buf, totlen) 805 struct eg_softc *sc; 806 void *buf; 807 int totlen; 808 { 809 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 810 struct mbuf *m, *m0, *newm; 811 int len; 812 813 MGETHDR(m0, M_DONTWAIT, MT_DATA); 814 if (m0 == 0) 815 return (0); 816 m0->m_pkthdr.rcvif = ifp; 817 m0->m_pkthdr.len = totlen; 818 len = MHLEN; 819 m = m0; 820 821 while (totlen > 0) { 822 if (totlen >= MINCLSIZE) { 823 MCLGET(m, M_DONTWAIT); 824 if ((m->m_flags & M_EXT) == 0) 825 goto bad; 826 len = MCLBYTES; 827 } 828 829 m->m_len = len = min(totlen, len); 830 memcpy(mtod(m, void *), buf, len); 831 buf = (char *)buf + len; 832 833 totlen -= len; 834 if (totlen > 0) { 835 MGET(newm, M_DONTWAIT, MT_DATA); 836 if (newm == 0) 837 goto bad; 838 len = MLEN; 839 m = m->m_next = newm; 840 } 841 } 842 843 return (m0); 844 845 bad: 846 m_freem(m0); 847 return (0); 848 } 849 850 int 851 egioctl(ifp, cmd, data) 852 struct ifnet *ifp; 853 u_long cmd; 854 void *data; 855 { 856 struct eg_softc *sc = ifp->if_softc; 857 struct ifaddr *ifa = (struct ifaddr *)data; 858 int s, error = 0; 859 860 s = splnet(); 861 862 switch (cmd) { 863 864 case SIOCSIFADDR: 865 ifp->if_flags |= IFF_UP; 866 867 switch (ifa->ifa_addr->sa_family) { 868 #ifdef INET 869 case AF_INET: 870 eginit(sc); 871 arp_ifinit(ifp, ifa); 872 break; 873 #endif 874 default: 875 eginit(sc); 876 break; 877 } 878 break; 879 880 case SIOCSIFFLAGS: 881 if ((ifp->if_flags & IFF_UP) == 0 && 882 (ifp->if_flags & IFF_RUNNING) != 0) { 883 /* 884 * If interface is marked down and it is running, then 885 * stop it. 886 */ 887 egstop(sc); 888 ifp->if_flags &= ~IFF_RUNNING; 889 } else if ((ifp->if_flags & IFF_UP) != 0 && 890 (ifp->if_flags & IFF_RUNNING) == 0) { 891 /* 892 * If interface is marked up and it is stopped, then 893 * start it. 894 */ 895 eginit(sc); 896 } else { 897 sc->eg_pcb[0] = EG_CMD_GETSTATS; 898 sc->eg_pcb[1] = 0; 899 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) { 900 DPRINTF(("write error\n")); 901 } 902 /* 903 * XXX deal with flags changes: 904 * IFF_MULTICAST, IFF_PROMISC, 905 * IFF_LINK0, IFF_LINK1, 906 */ 907 } 908 break; 909 910 default: 911 error = EINVAL; 912 break; 913 } 914 915 splx(s); 916 return error; 917 } 918 919 void 920 egreset(sc) 921 struct eg_softc *sc; 922 { 923 int s; 924 925 DPRINTF(("%s: egreset()\n", sc->sc_dev.dv_xname)); 926 s = splnet(); 927 egstop(sc); 928 eginit(sc); 929 splx(s); 930 } 931 932 void 933 egwatchdog(ifp) 934 struct ifnet *ifp; 935 { 936 struct eg_softc *sc = ifp->if_softc; 937 938 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 939 sc->sc_ethercom.ec_if.if_oerrors++; 940 941 egreset(sc); 942 } 943 944 void 945 egstop(sc) 946 struct eg_softc *sc; 947 { 948 949 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 950 } 951
Indexes created Thu Oct 02 07:10:07 GMT 2025