if_eg.c revision 1.83.2.1
1 /* $NetBSD: if_eg.c,v 1.83.2.1 2012/02/18 07:34:27 mrg 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 1.83.2.1 2012/02/18 07:34:27 mrg Exp $"); 44 45 #include "opt_inet.h" 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/mbuf.h> 50 #include <sys/socket.h> 51 #include <sys/ioctl.h> 52 #include <sys/errno.h> 53 #include <sys/syslog.h> 54 #include <sys/select.h> 55 #include <sys/device.h> 56 #include <sys/rnd.h> 57 58 #include <net/if.h> 59 #include <net/if_dl.h> 60 #include <net/if_types.h> 61 62 #include <net/if_ether.h> 63 64 #ifdef INET 65 #include <netinet/in.h> 66 #include <netinet/in_systm.h> 67 #include <netinet/in_var.h> 68 #include <netinet/ip.h> 69 #include <netinet/if_inarp.h> 70 #endif 71 72 73 #include <net/bpf.h> 74 #include <net/bpfdesc.h> 75 76 #include <sys/cpu.h> 77 #include <sys/intr.h> 78 #include <sys/bus.h> 79 80 #include <dev/isa/isavar.h> 81 #include <dev/isa/if_egreg.h> 82 #include <dev/isa/elink.h> 83 84 /* for debugging convenience */ 85 #ifdef EGDEBUG 86 #define DPRINTF(x) printf x 87 #else 88 #define DPRINTF(x) 89 #endif 90 91 #define EG_INLEN 10 92 #define EG_BUFLEN 0x0670 93 94 #define EG_PCBLEN 64 95 96 /* 97 * Ethernet software status per interface. 98 */ 99 struct eg_softc { 100 struct device sc_dev; 101 void *sc_ih; 102 struct ethercom sc_ethercom; /* Ethernet common part */ 103 bus_space_tag_t sc_iot; /* bus space identifier */ 104 bus_space_handle_t sc_ioh; /* i/o handle */ 105 u_int8_t eg_rom_major; /* Cards ROM version (major number) */ 106 u_int8_t eg_rom_minor; /* Cards ROM version (minor number) */ 107 short eg_ram; /* Amount of RAM on the card */ 108 u_int8_t eg_pcb[EG_PCBLEN]; /* Primary Command Block buffer */ 109 u_int8_t eg_incount; /* Number of buffers currently used */ 110 void * eg_inbuf; /* Incoming packet buffer */ 111 void * eg_outbuf; /* Outgoing packet buffer */ 112 113 krndsource_t rnd_source; 114 }; 115 116 int egprobe(device_t, cfdata_t, void *); 117 void egattach(device_t, device_t, void *); 118 119 CFATTACH_DECL(eg, sizeof(struct eg_softc), 120 egprobe, egattach, NULL, NULL); 121 122 int egintr(void *); 123 void eginit(struct eg_softc *); 124 int egioctl(struct ifnet *, u_long, void *); 125 void egrecv(struct eg_softc *); 126 void egstart(struct ifnet *); 127 void egwatchdog(struct ifnet *); 128 void egreset(struct eg_softc *); 129 void egread(struct eg_softc *, void *, int); 130 struct mbuf *egget(struct eg_softc *, void *, int); 131 void egstop(struct eg_softc *); 132 133 static inline void egprintpcb(u_int8_t *); 134 static inline void egprintstat(u_char); 135 static int egoutPCB(bus_space_tag_t, bus_space_handle_t, u_int8_t); 136 static int egreadPCBstat(bus_space_tag_t, bus_space_handle_t, u_int8_t); 137 static int egreadPCBready(bus_space_tag_t, bus_space_handle_t); 138 static int egwritePCB(bus_space_tag_t, bus_space_handle_t, u_int8_t *); 139 static int egreadPCB(bus_space_tag_t, bus_space_handle_t, u_int8_t *); 140 141 /* 142 * Support stuff 143 */ 144 145 static inline void 146 egprintpcb(u_int8_t *pcb) 147 { 148 int i; 149 150 for (i = 0; i < pcb[1] + 2; i++) 151 DPRINTF(("pcb[%2d] = %x\n", i, pcb[i])); 152 } 153 154 155 static inline void 156 egprintstat(u_char b) 157 { 158 DPRINTF(("%s %s %s %s %s %s %s\n", 159 (b & EG_STAT_HCRE)?"HCRE":"", 160 (b & EG_STAT_ACRF)?"ACRF":"", 161 (b & EG_STAT_DIR )?"DIR ":"", 162 (b & EG_STAT_DONE)?"DONE":"", 163 (b & EG_STAT_ASF3)?"ASF3":"", 164 (b & EG_STAT_ASF2)?"ASF2":"", 165 (b & EG_STAT_ASF1)?"ASF1":"")); 166 } 167 168 static int 169 egoutPCB(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t b) 170 { 171 int i; 172 173 for (i=0; i < 4000; i++) { 174 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) { 175 bus_space_write_1(iot, ioh, EG_COMMAND, b); 176 return 0; 177 } 178 delay(10); 179 } 180 DPRINTF(("egoutPCB failed\n")); 181 return 1; 182 } 183 184 static int 185 egreadPCBstat(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t statb) 186 { 187 int i; 188 189 for (i=0; i < 5000; i++) { 190 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 191 EG_PCB_STAT) != EG_PCB_NULL) 192 break; 193 delay(10); 194 } 195 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) == statb) 196 return 0; 197 return 1; 198 } 199 200 static int 201 egreadPCBready(bus_space_tag_t iot, bus_space_handle_t ioh) 202 { 203 int i; 204 205 for (i=0; i < 10000; i++) { 206 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) 207 return 0; 208 delay(5); 209 } 210 DPRINTF(("PCB read not ready\n")); 211 return 1; 212 } 213 214 static int 215 egwritePCB(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t *pcb) 216 { 217 int i; 218 u_int8_t len; 219 220 bus_space_write_1(iot, ioh, EG_CONTROL, 221 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 222 223 len = pcb[1] + 2; 224 for (i = 0; i < len; i++) 225 egoutPCB(iot, ioh, pcb[i]); 226 227 for (i=0; i < 4000; i++) { 228 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) 229 break; 230 delay(10); 231 } 232 233 bus_space_write_1(iot, ioh, EG_CONTROL, 234 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_DONE); 235 236 egoutPCB(iot, ioh, len); 237 238 if (egreadPCBstat(iot, ioh, EG_PCB_ACCEPT)) 239 return 1; 240 return 0; 241 } 242 243 static int 244 egreadPCB(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t *pcb) 245 { 246 int i; 247 248 bus_space_write_1(iot, ioh, EG_CONTROL, 249 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 250 251 memset(pcb, 0, EG_PCBLEN); 252 253 if (egreadPCBready(iot, ioh)) 254 return 1; 255 256 pcb[0] = bus_space_read_1(iot, ioh, EG_COMMAND); 257 258 if (egreadPCBready(iot, ioh)) 259 return 1; 260 261 pcb[1] = bus_space_read_1(iot, ioh, EG_COMMAND); 262 263 if (pcb[1] > 62) { 264 DPRINTF(("len %d too large\n", pcb[1])); 265 return 1; 266 } 267 268 for (i = 0; i < pcb[1]; i++) { 269 if (egreadPCBready(iot, ioh)) 270 return 1; 271 pcb[2+i] = bus_space_read_1(iot, ioh, EG_COMMAND); 272 } 273 if (egreadPCBready(iot, ioh)) 274 return 1; 275 if (egreadPCBstat(iot, ioh, EG_PCB_DONE)) 276 return 1; 277 if (bus_space_read_1(iot, ioh, EG_COMMAND) != pcb[1] + 2) { 278 return 1; 279 } 280 281 bus_space_write_1(iot, ioh, EG_CONTROL, 282 (bus_space_read_1(iot, ioh, EG_CONTROL) & 283 ~EG_PCB_STAT) | EG_PCB_ACCEPT); 284 285 return 0; 286 } 287 288 /* 289 * Real stuff 290 */ 291 292 int 293 egprobe(device_t parent, cfdata_t match, void *aux) 294 { 295 struct isa_attach_args *ia = aux; 296 bus_space_tag_t iot = ia->ia_iot; 297 bus_space_handle_t ioh; 298 int i, rval; 299 static u_int8_t pcb[EG_PCBLEN]; 300 301 rval = 0; 302 303 /* 304 * XXX This probe is slow. If there are no ISA expansion slots, 305 * then skip it. 306 */ 307 if (isa_get_slotcount() == 0) 308 return (0); 309 310 if (ia->ia_nio < 1) 311 return (0); 312 if (ia->ia_nirq < 1) 313 return (0); 314 315 if (ISA_DIRECT_CONFIG(ia)) 316 return (0); 317 318 /* Disallow wildcarded i/o address. */ 319 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 320 return (0); 321 322 /* Disallow wildcarded IRQ. */ 323 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 324 return (0); 325 326 if ((ia->ia_io[0].ir_addr & ~0x07f0) != 0) { 327 DPRINTF(("Weird iobase %x\n", ia->ia_io[0].ir_addr)); 328 return 0; 329 } 330 331 /* Map i/o space. */ 332 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 333 DPRINTF(("egprobe: can't map i/o space in probe\n")); 334 return 0; 335 } 336 337 /* hard reset card */ 338 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_RESET); 339 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 340 for (i = 0; i < 500; i++) { 341 delay(1000); 342 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 343 EG_PCB_STAT) == EG_PCB_NULL) 344 break; 345 } 346 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) { 347 DPRINTF(("egprobe: Reset failed\n")); 348 goto out; 349 } 350 pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 351 pcb[1] = 0; 352 if (egwritePCB(iot, ioh, pcb) != 0) 353 goto out; 354 355 if ((egreadPCB(iot, ioh, pcb) != 0) || 356 pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 357 pcb[1] != 0x0a) { 358 egprintpcb(pcb); 359 goto out; 360 } 361 362 ia->ia_nio = 1; 363 ia->ia_io[0].ir_size = 0x08; 364 365 ia->ia_nirq = 1; 366 367 ia->ia_niomem = 0; 368 ia->ia_ndrq = 0; 369 370 rval = 1; 371 372 out: 373 bus_space_unmap(iot, ioh, 0x08); 374 return rval; 375 } 376 377 void 378 egattach(device_t parent, device_t self, void *aux) 379 { 380 struct eg_softc *sc = (void *)self; 381 struct isa_attach_args *ia = aux; 382 bus_space_tag_t iot = ia->ia_iot; 383 bus_space_handle_t ioh; 384 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 385 u_int8_t myaddr[ETHER_ADDR_LEN]; 386 387 printf("\n"); 388 389 /* Map i/o space. */ 390 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 391 aprint_error_dev(self, "can't map i/o space\n"); 392 return; 393 } 394 395 sc->sc_iot = iot; 396 sc->sc_ioh = ioh; 397 398 sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 399 sc->eg_pcb[1] = 0; 400 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 401 aprint_error_dev(self, "error requesting adapter info\n"); 402 return; 403 } 404 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 405 egprintpcb(sc->eg_pcb); 406 aprint_error_dev(self, "error reading adapter info\n"); 407 return; 408 } 409 410 if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 411 sc->eg_pcb[1] != 0x0a) { 412 egprintpcb(sc->eg_pcb); 413 aprint_error_dev(self, "bogus adapter info\n"); 414 return; 415 } 416 417 sc->eg_rom_major = sc->eg_pcb[3]; 418 sc->eg_rom_minor = sc->eg_pcb[2]; 419 sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 420 421 egstop(sc); 422 423 sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ 424 sc->eg_pcb[1] = 0; 425 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 426 aprint_error_dev(self, "can't send Get Station Address\n"); 427 return; 428 } 429 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 430 aprint_error_dev(self, "can't read station address\n"); 431 egprintpcb(sc->eg_pcb); 432 return; 433 } 434 435 /* check Get station address response */ 436 if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { 437 aprint_error_dev(self, "card responded with garbage (1)\n"); 438 egprintpcb(sc->eg_pcb); 439 return; 440 } 441 memcpy(myaddr, &sc->eg_pcb[2], ETHER_ADDR_LEN); 442 443 printf("%s: ROM v%d.%02d %dk address %s\n", device_xname(self), 444 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 445 ether_sprintf(myaddr)); 446 447 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 448 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 449 printf("%s: can't send Set Station Address\n", device_xname(self)); 450 return; 451 } 452 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 453 aprint_error_dev(self, "can't read Set Station Address status\n"); 454 egprintpcb(sc->eg_pcb); 455 return; 456 } 457 if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || 458 sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { 459 aprint_error_dev(self, "card responded with garbage (2)\n"); 460 egprintpcb(sc->eg_pcb); 461 return; 462 } 463 464 /* Initialize ifnet structure. */ 465 strlcpy(ifp->if_xname, device_xname(&sc->sc_dev), IFNAMSIZ); 466 ifp->if_softc = sc; 467 ifp->if_start = egstart; 468 ifp->if_ioctl = egioctl; 469 ifp->if_watchdog = egwatchdog; 470 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 471 IFQ_SET_READY(&ifp->if_snd); 472 473 /* Now we can attach the interface. */ 474 if_attach(ifp); 475 ether_ifattach(ifp, myaddr); 476 477 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 478 IST_EDGE, IPL_NET, egintr, sc); 479 480 rnd_attach_source(&sc->rnd_source, device_xname(&sc->sc_dev), 481 RND_TYPE_NET, 0); 482 } 483 484 void 485 eginit(struct eg_softc *sc) 486 { 487 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 488 bus_space_tag_t iot = sc->sc_iot; 489 bus_space_handle_t ioh = sc->sc_ioh; 490 491 /* soft reset the board */ 492 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_FLSH); 493 delay(100); 494 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_ATTN); 495 delay(100); 496 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 497 delay(200); 498 499 sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ 500 sc->eg_pcb[1] = 2; 501 sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ 502 sc->eg_pcb[3] = 0; 503 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) 504 aprint_error_dev(&sc->sc_dev, "can't send Configure 82586\n"); 505 506 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 507 aprint_error_dev(&sc->sc_dev, "can't read Configure 82586 status\n"); 508 egprintpcb(sc->eg_pcb); 509 } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) 510 aprint_error_dev(&sc->sc_dev, "configure card command failed\n"); 511 512 if (sc->eg_inbuf == NULL) { 513 sc->eg_inbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 514 if (sc->eg_inbuf == NULL) { 515 aprint_error_dev(&sc->sc_dev, "can't allocate inbuf\n"); 516 panic("eginit"); 517 } 518 } 519 sc->eg_incount = 0; 520 521 if (sc->eg_outbuf == NULL) { 522 sc->eg_outbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 523 if (sc->eg_outbuf == NULL) { 524 aprint_error_dev(&sc->sc_dev, "can't allocate outbuf\n"); 525 panic("eginit"); 526 } 527 } 528 529 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_CMDE); 530 531 sc->eg_incount = 0; 532 egrecv(sc); 533 534 /* Interface is now `running', with no output active. */ 535 ifp->if_flags |= IFF_RUNNING; 536 ifp->if_flags &= ~IFF_OACTIVE; 537 538 /* Attempt to start output, if any. */ 539 egstart(ifp); 540 } 541 542 void 543 egrecv(struct eg_softc *sc) 544 { 545 546 while (sc->eg_incount < EG_INLEN) { 547 sc->eg_pcb[0] = EG_CMD_RECVPACKET; 548 sc->eg_pcb[1] = 0x08; 549 sc->eg_pcb[2] = 0; /* address not used.. we send zero */ 550 sc->eg_pcb[3] = 0; 551 sc->eg_pcb[4] = 0; 552 sc->eg_pcb[5] = 0; 553 sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ 554 sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; 555 sc->eg_pcb[8] = 0; /* timeout, 0 == none */ 556 sc->eg_pcb[9] = 0; 557 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 558 break; 559 sc->eg_incount++; 560 } 561 } 562 563 void 564 egstart(struct ifnet *ifp) 565 { 566 struct eg_softc *sc = ifp->if_softc; 567 bus_space_tag_t iot = sc->sc_iot; 568 bus_space_handle_t ioh = sc->sc_ioh; 569 struct mbuf *m0, *m; 570 char *buffer; 571 int len; 572 u_int16_t *ptr; 573 574 /* Don't transmit if interface is busy or not running */ 575 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 576 return; 577 578 loop: 579 /* Dequeue the next datagram. */ 580 IFQ_DEQUEUE(&ifp->if_snd, m0); 581 if (m0 == 0) 582 return; 583 584 ifp->if_flags |= IFF_OACTIVE; 585 586 /* We need to use m->m_pkthdr.len, so require the header */ 587 if ((m0->m_flags & M_PKTHDR) == 0) { 588 aprint_error_dev(&sc->sc_dev, "no header mbuf\n"); 589 panic("egstart"); 590 } 591 len = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN); 592 593 bpf_mtap(ifp, m0); 594 595 sc->eg_pcb[0] = EG_CMD_SENDPACKET; 596 sc->eg_pcb[1] = 0x06; 597 sc->eg_pcb[2] = 0; /* address not used, we send zero */ 598 sc->eg_pcb[3] = 0; 599 sc->eg_pcb[4] = 0; 600 sc->eg_pcb[5] = 0; 601 sc->eg_pcb[6] = len; /* length of packet */ 602 sc->eg_pcb[7] = len >> 8; 603 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 604 aprint_error_dev(&sc->sc_dev, "can't send Send Packet command\n"); 605 ifp->if_oerrors++; 606 ifp->if_flags &= ~IFF_OACTIVE; 607 m_freem(m0); 608 goto loop; 609 } 610 611 buffer = sc->eg_outbuf; 612 for (m = m0; m != 0; m = m->m_next) { 613 memcpy(buffer, mtod(m, void *), m->m_len); 614 buffer += m->m_len; 615 } 616 if (len > m0->m_pkthdr.len) 617 memset(buffer, 0, len - m0->m_pkthdr.len); 618 619 /* set direction bit: host -> adapter */ 620 bus_space_write_1(iot, ioh, EG_CONTROL, 621 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 622 623 for (ptr = (u_int16_t *) sc->eg_outbuf; len > 0; len -= 2) { 624 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 625 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 626 ; /* XXX need timeout here */ 627 } 628 629 m_freem(m0); 630 } 631 632 int 633 egintr(void *arg) 634 { 635 struct eg_softc *sc = arg; 636 bus_space_tag_t iot = sc->sc_iot; 637 bus_space_handle_t ioh = sc->sc_ioh; 638 int i, len, serviced; 639 u_int16_t *ptr; 640 641 serviced = 0; 642 643 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 644 egreadPCB(iot, ioh, sc->eg_pcb); 645 switch (sc->eg_pcb[0]) { 646 case EG_RSP_RECVPACKET: 647 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 648 649 /* Set direction bit : Adapter -> host */ 650 bus_space_write_1(iot, ioh, EG_CONTROL, 651 bus_space_read_1(iot, ioh, EG_CONTROL) | EG_CTL_DIR); 652 653 for (ptr = (u_int16_t *) sc->eg_inbuf; 654 len > 0; len -= 2) { 655 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 656 EG_STAT_HRDY)) 657 ; 658 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 659 } 660 661 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 662 egread(sc, sc->eg_inbuf, len); 663 664 sc->eg_incount--; 665 egrecv(sc); 666 serviced = 1; 667 break; 668 669 case EG_RSP_SENDPACKET: 670 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 671 DPRINTF(("%s: packet dropped\n", 672 device_xname(&sc->sc_dev))); 673 sc->sc_ethercom.ec_if.if_oerrors++; 674 } else 675 sc->sc_ethercom.ec_if.if_opackets++; 676 sc->sc_ethercom.ec_if.if_collisions += 677 sc->eg_pcb[8] & 0xf; 678 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 679 egstart(&sc->sc_ethercom.ec_if); 680 serviced = 1; 681 break; 682 683 /* XXX byte-order and type-size bugs here... */ 684 case EG_RSP_GETSTATS: 685 DPRINTF(("%s: Card Statistics\n", 686 device_xname(&sc->sc_dev))); 687 memcpy(&i, &sc->eg_pcb[2], sizeof(i)); 688 DPRINTF(("Receive Packets %d\n", i)); 689 memcpy(&i, &sc->eg_pcb[6], sizeof(i)); 690 DPRINTF(("Transmit Packets %d\n", i)); 691 DPRINTF(("CRC errors %d\n", 692 *(short *) &sc->eg_pcb[10])); 693 DPRINTF(("alignment errors %d\n", 694 *(short *) &sc->eg_pcb[12])); 695 DPRINTF(("no resources errors %d\n", 696 *(short *) &sc->eg_pcb[14])); 697 DPRINTF(("overrun errors %d\n", 698 *(short *) &sc->eg_pcb[16])); 699 serviced = 1; 700 break; 701 702 default: 703 printf("%s: egintr: Unknown response %x??\n", 704 device_xname(&sc->sc_dev), sc->eg_pcb[0]); 705 egprintpcb(sc->eg_pcb); 706 break; 707 } 708 709 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 710 } 711 712 return serviced; 713 } 714 715 /* 716 * Pass a packet up to the higher levels. 717 */ 718 void 719 egread(struct eg_softc *sc, void *buf, int len) 720 { 721 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 722 struct mbuf *m; 723 724 if (len <= sizeof(struct ether_header) || 725 len > ETHER_MAX_LEN) { 726 aprint_error_dev(&sc->sc_dev, "invalid packet size %d; dropping\n", len); 727 ifp->if_ierrors++; 728 return; 729 } 730 731 /* Pull packet off interface. */ 732 m = egget(sc, buf, len); 733 if (m == 0) { 734 ifp->if_ierrors++; 735 return; 736 } 737 738 ifp->if_ipackets++; 739 740 /* 741 * Check if there's a BPF listener on this interface. 742 * If so, hand off the raw packet to BPF. 743 */ 744 bpf_mtap(ifp, m); 745 746 (*ifp->if_input)(ifp, m); 747 } 748 749 /* 750 * convert buf into mbufs 751 */ 752 struct mbuf * 753 egget(struct eg_softc *sc, void *buf, int totlen) 754 { 755 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 756 struct mbuf *m, *m0, *newm; 757 int len; 758 759 MGETHDR(m0, M_DONTWAIT, MT_DATA); 760 if (m0 == 0) 761 return (0); 762 m0->m_pkthdr.rcvif = ifp; 763 m0->m_pkthdr.len = totlen; 764 len = MHLEN; 765 m = m0; 766 767 while (totlen > 0) { 768 if (totlen >= MINCLSIZE) { 769 MCLGET(m, M_DONTWAIT); 770 if ((m->m_flags & M_EXT) == 0) 771 goto bad; 772 len = MCLBYTES; 773 } 774 775 m->m_len = len = min(totlen, len); 776 memcpy(mtod(m, void *), buf, len); 777 buf = (char *)buf + len; 778 779 totlen -= len; 780 if (totlen > 0) { 781 MGET(newm, M_DONTWAIT, MT_DATA); 782 if (newm == 0) 783 goto bad; 784 len = MLEN; 785 m = m->m_next = newm; 786 } 787 } 788 789 return (m0); 790 791 bad: 792 m_freem(m0); 793 return (0); 794 } 795 796 int 797 egioctl(struct ifnet *ifp, unsigned long cmd, void *data) 798 { 799 struct eg_softc *sc = ifp->if_softc; 800 struct ifaddr *ifa = (struct ifaddr *)data; 801 int s, error = 0; 802 803 s = splnet(); 804 805 switch (cmd) { 806 807 case SIOCINITIFADDR: 808 ifp->if_flags |= IFF_UP; 809 810 eginit(sc); 811 switch (ifa->ifa_addr->sa_family) { 812 #ifdef INET 813 case AF_INET: 814 arp_ifinit(ifp, ifa); 815 break; 816 #endif 817 default: 818 break; 819 } 820 break; 821 822 case SIOCSIFFLAGS: 823 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 824 break; 825 /* XXX re-use ether_ioctl() */ 826 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 827 case IFF_RUNNING: 828 /* 829 * If interface is marked down and it is running, then 830 * stop it. 831 */ 832 egstop(sc); 833 ifp->if_flags &= ~IFF_RUNNING; 834 break; 835 case IFF_UP: 836 /* 837 * If interface is marked up and it is stopped, then 838 * start it. 839 */ 840 eginit(sc); 841 break; 842 default: 843 sc->eg_pcb[0] = EG_CMD_GETSTATS; 844 sc->eg_pcb[1] = 0; 845 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) { 846 DPRINTF(("write error\n")); 847 } 848 /* 849 * XXX deal with flags changes: 850 * IFF_MULTICAST, IFF_PROMISC, 851 * IFF_LINK0, IFF_LINK1, 852 */ 853 break; 854 } 855 break; 856 857 default: 858 error = ether_ioctl(ifp, cmd, data); 859 break; 860 } 861 862 splx(s); 863 return error; 864 } 865 866 void 867 egreset(struct eg_softc *sc) 868 { 869 int s; 870 871 DPRINTF(("%s: egreset()\n", device_xname(&sc->sc_dev))); 872 s = splnet(); 873 egstop(sc); 874 eginit(sc); 875 splx(s); 876 } 877 878 void 879 egwatchdog(struct ifnet *ifp) 880 { 881 struct eg_softc *sc = ifp->if_softc; 882 883 log(LOG_ERR, "%s: device timeout\n", device_xname(&sc->sc_dev)); 884 sc->sc_ethercom.ec_if.if_oerrors++; 885 886 egreset(sc); 887 } 888 889 void 890 egstop(struct eg_softc *sc) 891 { 892 893 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 894 } 895
Indexes created Tue Oct 21 05:10:09 GMT 2025