if_eg.c revision 1.76
1 /* $NetBSD: if_eg.c,v 1.76 2008/04/08 20:08:49 cegger 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 1.76 2008/04/08 20:08:49 cegger 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 aprint_error_dev(self, "can't map i/o space\n"); 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 aprint_error_dev(self, "error requesting adapter info\n"); 426 return; 427 } 428 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 429 egprintpcb(sc->eg_pcb); 430 aprint_error_dev(self, "error reading adapter info\n"); 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 aprint_error_dev(self, "bogus adapter info\n"); 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 aprint_error_dev(self, "can't send Get Station Address\n"); 451 return; 452 } 453 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 454 aprint_error_dev(self, "can't read station address\n"); 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 aprint_error_dev(self, "card responded with garbage (1)\n"); 462 egprintpcb(sc->eg_pcb); 463 return; 464 } 465 memcpy(myaddr, &sc->eg_pcb[2], ETHER_ADDR_LEN); 466 467 printf("%s: ROM v%d.%02d %dk address %s\n", device_xname(self), 468 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 469 ether_sprintf(myaddr)); 470 471 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 472 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 473 printf("%s: can't send Set Station Address\n", device_xname(self)); 474 return; 475 } 476 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 477 aprint_error_dev(self, "can't read Set Station Address status\n"); 478 egprintpcb(sc->eg_pcb); 479 return; 480 } 481 if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || 482 sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { 483 aprint_error_dev(self, "card responded with garbage (2)\n"); 484 egprintpcb(sc->eg_pcb); 485 return; 486 } 487 488 /* Initialize ifnet structure. */ 489 strlcpy(ifp->if_xname, device_xname(&sc->sc_dev), IFNAMSIZ); 490 ifp->if_softc = sc; 491 ifp->if_start = egstart; 492 ifp->if_ioctl = egioctl; 493 ifp->if_watchdog = egwatchdog; 494 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 495 IFQ_SET_READY(&ifp->if_snd); 496 497 /* Now we can attach the interface. */ 498 if_attach(ifp); 499 ether_ifattach(ifp, myaddr); 500 501 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 502 IST_EDGE, IPL_NET, egintr, sc); 503 504 #if NRND > 0 505 rnd_attach_source(&sc->rnd_source, device_xname(&sc->sc_dev), 506 RND_TYPE_NET, 0); 507 #endif 508 } 509 510 void 511 eginit(sc) 512 struct eg_softc *sc; 513 { 514 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 515 bus_space_tag_t iot = sc->sc_iot; 516 bus_space_handle_t ioh = sc->sc_ioh; 517 518 /* soft reset the board */ 519 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_FLSH); 520 delay(100); 521 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_ATTN); 522 delay(100); 523 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 524 delay(200); 525 526 sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ 527 sc->eg_pcb[1] = 2; 528 sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ 529 sc->eg_pcb[3] = 0; 530 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) 531 aprint_error_dev(&sc->sc_dev, "can't send Configure 82586\n"); 532 533 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 534 aprint_error_dev(&sc->sc_dev, "can't read Configure 82586 status\n"); 535 egprintpcb(sc->eg_pcb); 536 } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) 537 aprint_error_dev(&sc->sc_dev, "configure card command failed\n"); 538 539 if (sc->eg_inbuf == NULL) { 540 sc->eg_inbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 541 if (sc->eg_inbuf == NULL) { 542 aprint_error_dev(&sc->sc_dev, "can't allocate inbuf\n"); 543 panic("eginit"); 544 } 545 } 546 sc->eg_incount = 0; 547 548 if (sc->eg_outbuf == NULL) { 549 sc->eg_outbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 550 if (sc->eg_outbuf == NULL) { 551 aprint_error_dev(&sc->sc_dev, "can't allocate outbuf\n"); 552 panic("eginit"); 553 } 554 } 555 556 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_CMDE); 557 558 sc->eg_incount = 0; 559 egrecv(sc); 560 561 /* Interface is now `running', with no output active. */ 562 ifp->if_flags |= IFF_RUNNING; 563 ifp->if_flags &= ~IFF_OACTIVE; 564 565 /* Attempt to start output, if any. */ 566 egstart(ifp); 567 } 568 569 void 570 egrecv(sc) 571 struct eg_softc *sc; 572 { 573 574 while (sc->eg_incount < EG_INLEN) { 575 sc->eg_pcb[0] = EG_CMD_RECVPACKET; 576 sc->eg_pcb[1] = 0x08; 577 sc->eg_pcb[2] = 0; /* address not used.. we send zero */ 578 sc->eg_pcb[3] = 0; 579 sc->eg_pcb[4] = 0; 580 sc->eg_pcb[5] = 0; 581 sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ 582 sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; 583 sc->eg_pcb[8] = 0; /* timeout, 0 == none */ 584 sc->eg_pcb[9] = 0; 585 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 586 break; 587 sc->eg_incount++; 588 } 589 } 590 591 void 592 egstart(ifp) 593 struct ifnet *ifp; 594 { 595 struct eg_softc *sc = ifp->if_softc; 596 bus_space_tag_t iot = sc->sc_iot; 597 bus_space_handle_t ioh = sc->sc_ioh; 598 struct mbuf *m0, *m; 599 char *buffer; 600 int len; 601 u_int16_t *ptr; 602 603 /* Don't transmit if interface is busy or not running */ 604 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 605 return; 606 607 loop: 608 /* Dequeue the next datagram. */ 609 IFQ_DEQUEUE(&ifp->if_snd, m0); 610 if (m0 == 0) 611 return; 612 613 ifp->if_flags |= IFF_OACTIVE; 614 615 /* We need to use m->m_pkthdr.len, so require the header */ 616 if ((m0->m_flags & M_PKTHDR) == 0) { 617 aprint_error_dev(&sc->sc_dev, "no header mbuf\n"); 618 panic("egstart"); 619 } 620 len = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN); 621 622 #if NBPFILTER > 0 623 if (ifp->if_bpf) 624 bpf_mtap(ifp->if_bpf, m0); 625 #endif 626 627 sc->eg_pcb[0] = EG_CMD_SENDPACKET; 628 sc->eg_pcb[1] = 0x06; 629 sc->eg_pcb[2] = 0; /* address not used, we send zero */ 630 sc->eg_pcb[3] = 0; 631 sc->eg_pcb[4] = 0; 632 sc->eg_pcb[5] = 0; 633 sc->eg_pcb[6] = len; /* length of packet */ 634 sc->eg_pcb[7] = len >> 8; 635 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 636 aprint_error_dev(&sc->sc_dev, "can't send Send Packet command\n"); 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 memcpy(buffer, mtod(m, void *), m->m_len); 646 buffer += m->m_len; 647 } 648 if (len > m0->m_pkthdr.len) 649 memset(buffer, 0, len - m0->m_pkthdr.len); 650 651 /* set direction bit: host -> adapter */ 652 bus_space_write_1(iot, ioh, EG_CONTROL, 653 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 654 655 for (ptr = (u_int16_t *) sc->eg_outbuf; len > 0; len -= 2) { 656 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 657 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 658 ; /* XXX need timeout here */ 659 } 660 661 m_freem(m0); 662 } 663 664 int 665 egintr(arg) 666 void *arg; 667 { 668 struct eg_softc *sc = arg; 669 bus_space_tag_t iot = sc->sc_iot; 670 bus_space_handle_t ioh = sc->sc_ioh; 671 int i, len, serviced; 672 u_int16_t *ptr; 673 674 serviced = 0; 675 676 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 677 egreadPCB(iot, ioh, sc->eg_pcb); 678 switch (sc->eg_pcb[0]) { 679 case EG_RSP_RECVPACKET: 680 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 681 682 /* Set direction bit : Adapter -> host */ 683 bus_space_write_1(iot, ioh, EG_CONTROL, 684 bus_space_read_1(iot, ioh, EG_CONTROL) | EG_CTL_DIR); 685 686 for (ptr = (u_int16_t *) sc->eg_inbuf; 687 len > 0; len -= 2) { 688 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 689 EG_STAT_HRDY)) 690 ; 691 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 692 } 693 694 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 695 egread(sc, sc->eg_inbuf, len); 696 697 sc->eg_incount--; 698 egrecv(sc); 699 serviced = 1; 700 break; 701 702 case EG_RSP_SENDPACKET: 703 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 704 DPRINTF(("%s: packet dropped\n", 705 device_xname(&sc->sc_dev))); 706 sc->sc_ethercom.ec_if.if_oerrors++; 707 } else 708 sc->sc_ethercom.ec_if.if_opackets++; 709 sc->sc_ethercom.ec_if.if_collisions += 710 sc->eg_pcb[8] & 0xf; 711 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 712 egstart(&sc->sc_ethercom.ec_if); 713 serviced = 1; 714 break; 715 716 /* XXX byte-order and type-size bugs here... */ 717 case EG_RSP_GETSTATS: 718 DPRINTF(("%s: Card Statistics\n", 719 device_xname(&sc->sc_dev))); 720 memcpy(&i, &sc->eg_pcb[2], sizeof(i)); 721 DPRINTF(("Receive Packets %d\n", i)); 722 memcpy(&i, &sc->eg_pcb[6], sizeof(i)); 723 DPRINTF(("Transmit Packets %d\n", i)); 724 DPRINTF(("CRC errors %d\n", 725 *(short *) &sc->eg_pcb[10])); 726 DPRINTF(("alignment errors %d\n", 727 *(short *) &sc->eg_pcb[12])); 728 DPRINTF(("no resources errors %d\n", 729 *(short *) &sc->eg_pcb[14])); 730 DPRINTF(("overrun errors %d\n", 731 *(short *) &sc->eg_pcb[16])); 732 serviced = 1; 733 break; 734 735 default: 736 printf("%s: egintr: Unknown response %x??\n", 737 device_xname(&sc->sc_dev), sc->eg_pcb[0]); 738 egprintpcb(sc->eg_pcb); 739 break; 740 } 741 742 #if NRND > 0 743 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 744 #endif 745 } 746 747 return serviced; 748 } 749 750 /* 751 * Pass a packet up to the higher levels. 752 */ 753 void 754 egread(sc, buf, len) 755 struct eg_softc *sc; 756 void *buf; 757 int len; 758 { 759 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 760 struct mbuf *m; 761 762 if (len <= sizeof(struct ether_header) || 763 len > ETHER_MAX_LEN) { 764 aprint_error_dev(&sc->sc_dev, "invalid packet size %d; dropping\n", 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 #if NBPFILTER > 0 779 /* 780 * Check if there's a BPF listener on this interface. 781 * If so, hand off the raw packet to BPF. 782 */ 783 if (ifp->if_bpf) 784 bpf_mtap(ifp->if_bpf, m); 785 #endif 786 787 (*ifp->if_input)(ifp, m); 788 } 789 790 /* 791 * convert buf into mbufs 792 */ 793 struct mbuf * 794 egget(sc, buf, totlen) 795 struct eg_softc *sc; 796 void *buf; 797 int totlen; 798 { 799 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 800 struct mbuf *m, *m0, *newm; 801 int len; 802 803 MGETHDR(m0, M_DONTWAIT, MT_DATA); 804 if (m0 == 0) 805 return (0); 806 m0->m_pkthdr.rcvif = ifp; 807 m0->m_pkthdr.len = totlen; 808 len = MHLEN; 809 m = m0; 810 811 while (totlen > 0) { 812 if (totlen >= MINCLSIZE) { 813 MCLGET(m, M_DONTWAIT); 814 if ((m->m_flags & M_EXT) == 0) 815 goto bad; 816 len = MCLBYTES; 817 } 818 819 m->m_len = len = min(totlen, len); 820 memcpy(mtod(m, void *), buf, len); 821 buf = (char *)buf + len; 822 823 totlen -= len; 824 if (totlen > 0) { 825 MGET(newm, M_DONTWAIT, MT_DATA); 826 if (newm == 0) 827 goto bad; 828 len = MLEN; 829 m = m->m_next = newm; 830 } 831 } 832 833 return (m0); 834 835 bad: 836 m_freem(m0); 837 return (0); 838 } 839 840 int 841 egioctl(ifp, cmd, data) 842 struct ifnet *ifp; 843 u_long cmd; 844 void *data; 845 { 846 struct eg_softc *sc = ifp->if_softc; 847 struct ifaddr *ifa = (struct ifaddr *)data; 848 int s, error = 0; 849 850 s = splnet(); 851 852 switch (cmd) { 853 854 case SIOCSIFADDR: 855 ifp->if_flags |= IFF_UP; 856 857 switch (ifa->ifa_addr->sa_family) { 858 #ifdef INET 859 case AF_INET: 860 eginit(sc); 861 arp_ifinit(ifp, ifa); 862 break; 863 #endif 864 default: 865 eginit(sc); 866 break; 867 } 868 break; 869 870 case SIOCSIFFLAGS: 871 if ((ifp->if_flags & IFF_UP) == 0 && 872 (ifp->if_flags & IFF_RUNNING) != 0) { 873 /* 874 * If interface is marked down and it is running, then 875 * stop it. 876 */ 877 egstop(sc); 878 ifp->if_flags &= ~IFF_RUNNING; 879 } else if ((ifp->if_flags & IFF_UP) != 0 && 880 (ifp->if_flags & IFF_RUNNING) == 0) { 881 /* 882 * If interface is marked up and it is stopped, then 883 * start it. 884 */ 885 eginit(sc); 886 } else { 887 sc->eg_pcb[0] = EG_CMD_GETSTATS; 888 sc->eg_pcb[1] = 0; 889 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) { 890 DPRINTF(("write error\n")); 891 } 892 /* 893 * XXX deal with flags changes: 894 * IFF_MULTICAST, IFF_PROMISC, 895 * IFF_LINK0, IFF_LINK1, 896 */ 897 } 898 break; 899 900 default: 901 error = EINVAL; 902 break; 903 } 904 905 splx(s); 906 return error; 907 } 908 909 void 910 egreset(sc) 911 struct eg_softc *sc; 912 { 913 int s; 914 915 DPRINTF(("%s: egreset()\n", device_xname(&sc->sc_dev))); 916 s = splnet(); 917 egstop(sc); 918 eginit(sc); 919 splx(s); 920 } 921 922 void 923 egwatchdog(ifp) 924 struct ifnet *ifp; 925 { 926 struct eg_softc *sc = ifp->if_softc; 927 928 log(LOG_ERR, "%s: device timeout\n", device_xname(&sc->sc_dev)); 929 sc->sc_ethercom.ec_if.if_oerrors++; 930 931 egreset(sc); 932 } 933 934 void 935 egstop(sc) 936 struct eg_softc *sc; 937 { 938 939 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 940 } 941
Indexes created Thu Oct 02 10:09:58 GMT 2025