if_eg.c revision 1.78
1 /* $NetBSD: if_eg.c,v 1.78 2009/03/14 15:36:18 dsl 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 1.78 2009/03/14 15:36:18 dsl 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(u_int8_t *pcb) 155 { 156 int i; 157 158 for (i = 0; i < pcb[1] + 2; i++) 159 DPRINTF(("pcb[%2d] = %x\n", i, pcb[i])); 160 } 161 162 163 static inline void 164 egprintstat(u_char b) 165 { 166 DPRINTF(("%s %s %s %s %s %s %s\n", 167 (b & EG_STAT_HCRE)?"HCRE":"", 168 (b & EG_STAT_ACRF)?"ACRF":"", 169 (b & EG_STAT_DIR )?"DIR ":"", 170 (b & EG_STAT_DONE)?"DONE":"", 171 (b & EG_STAT_ASF3)?"ASF3":"", 172 (b & EG_STAT_ASF2)?"ASF2":"", 173 (b & EG_STAT_ASF1)?"ASF1":"")); 174 } 175 176 static int 177 egoutPCB(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t b) 178 { 179 int i; 180 181 for (i=0; i < 4000; i++) { 182 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) { 183 bus_space_write_1(iot, ioh, EG_COMMAND, b); 184 return 0; 185 } 186 delay(10); 187 } 188 DPRINTF(("egoutPCB failed\n")); 189 return 1; 190 } 191 192 static int 193 egreadPCBstat(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t statb) 194 { 195 int i; 196 197 for (i=0; i < 5000; i++) { 198 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 199 EG_PCB_STAT) != EG_PCB_NULL) 200 break; 201 delay(10); 202 } 203 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) == statb) 204 return 0; 205 return 1; 206 } 207 208 static int 209 egreadPCBready(bus_space_tag_t iot, bus_space_handle_t ioh) 210 { 211 int i; 212 213 for (i=0; i < 10000; i++) { 214 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) 215 return 0; 216 delay(5); 217 } 218 DPRINTF(("PCB read not ready\n")); 219 return 1; 220 } 221 222 static int 223 egwritePCB(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t *pcb) 224 { 225 int i; 226 u_int8_t len; 227 228 bus_space_write_1(iot, ioh, EG_CONTROL, 229 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 230 231 len = pcb[1] + 2; 232 for (i = 0; i < len; i++) 233 egoutPCB(iot, ioh, pcb[i]); 234 235 for (i=0; i < 4000; i++) { 236 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) 237 break; 238 delay(10); 239 } 240 241 bus_space_write_1(iot, ioh, EG_CONTROL, 242 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_DONE); 243 244 egoutPCB(iot, ioh, len); 245 246 if (egreadPCBstat(iot, ioh, EG_PCB_ACCEPT)) 247 return 1; 248 return 0; 249 } 250 251 static int 252 egreadPCB(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t *pcb) 253 { 254 int i; 255 256 bus_space_write_1(iot, ioh, EG_CONTROL, 257 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 258 259 memset(pcb, 0, EG_PCBLEN); 260 261 if (egreadPCBready(iot, ioh)) 262 return 1; 263 264 pcb[0] = bus_space_read_1(iot, ioh, EG_COMMAND); 265 266 if (egreadPCBready(iot, ioh)) 267 return 1; 268 269 pcb[1] = bus_space_read_1(iot, ioh, EG_COMMAND); 270 271 if (pcb[1] > 62) { 272 DPRINTF(("len %d too large\n", pcb[1])); 273 return 1; 274 } 275 276 for (i = 0; i < pcb[1]; i++) { 277 if (egreadPCBready(iot, ioh)) 278 return 1; 279 pcb[2+i] = bus_space_read_1(iot, ioh, EG_COMMAND); 280 } 281 if (egreadPCBready(iot, ioh)) 282 return 1; 283 if (egreadPCBstat(iot, ioh, EG_PCB_DONE)) 284 return 1; 285 if (bus_space_read_1(iot, ioh, EG_COMMAND) != pcb[1] + 2) { 286 return 1; 287 } 288 289 bus_space_write_1(iot, ioh, EG_CONTROL, 290 (bus_space_read_1(iot, ioh, EG_CONTROL) & 291 ~EG_PCB_STAT) | EG_PCB_ACCEPT); 292 293 return 0; 294 } 295 296 /* 297 * Real stuff 298 */ 299 300 int 301 egprobe(struct device *parent, struct cfdata *match, 302 void *aux) 303 { 304 struct isa_attach_args *ia = aux; 305 bus_space_tag_t iot = ia->ia_iot; 306 bus_space_handle_t ioh; 307 int i, rval; 308 static u_int8_t pcb[EG_PCBLEN]; 309 310 rval = 0; 311 312 /* 313 * XXX This probe is slow. If there are no ISA expansion slots, 314 * then skip it. 315 */ 316 if (isa_get_slotcount() == 0) 317 return (0); 318 319 if (ia->ia_nio < 1) 320 return (0); 321 if (ia->ia_nirq < 1) 322 return (0); 323 324 if (ISA_DIRECT_CONFIG(ia)) 325 return (0); 326 327 /* Disallow wildcarded i/o address. */ 328 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 329 return (0); 330 331 /* Disallow wildcarded IRQ. */ 332 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 333 return (0); 334 335 if ((ia->ia_io[0].ir_addr & ~0x07f0) != 0) { 336 DPRINTF(("Weird iobase %x\n", ia->ia_io[0].ir_addr)); 337 return 0; 338 } 339 340 /* Map i/o space. */ 341 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 342 DPRINTF(("egprobe: can't map i/o space in probe\n")); 343 return 0; 344 } 345 346 /* hard reset card */ 347 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_RESET); 348 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 349 for (i = 0; i < 500; i++) { 350 delay(1000); 351 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 352 EG_PCB_STAT) == EG_PCB_NULL) 353 break; 354 } 355 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) { 356 DPRINTF(("egprobe: Reset failed\n")); 357 goto out; 358 } 359 pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 360 pcb[1] = 0; 361 if (egwritePCB(iot, ioh, pcb) != 0) 362 goto out; 363 364 if ((egreadPCB(iot, ioh, pcb) != 0) || 365 pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 366 pcb[1] != 0x0a) { 367 egprintpcb(pcb); 368 goto out; 369 } 370 371 ia->ia_nio = 1; 372 ia->ia_io[0].ir_size = 0x08; 373 374 ia->ia_nirq = 1; 375 376 ia->ia_niomem = 0; 377 ia->ia_ndrq = 0; 378 379 rval = 1; 380 381 out: 382 bus_space_unmap(iot, ioh, 0x08); 383 return rval; 384 } 385 386 void 387 egattach(struct device *parent, struct device *self, void *aux) 388 { 389 struct eg_softc *sc = (void *)self; 390 struct isa_attach_args *ia = aux; 391 bus_space_tag_t iot = ia->ia_iot; 392 bus_space_handle_t ioh; 393 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 394 u_int8_t myaddr[ETHER_ADDR_LEN]; 395 396 printf("\n"); 397 398 /* Map i/o space. */ 399 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 400 aprint_error_dev(self, "can't map i/o space\n"); 401 return; 402 } 403 404 sc->sc_iot = iot; 405 sc->sc_ioh = ioh; 406 407 sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 408 sc->eg_pcb[1] = 0; 409 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 410 aprint_error_dev(self, "error requesting adapter info\n"); 411 return; 412 } 413 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 414 egprintpcb(sc->eg_pcb); 415 aprint_error_dev(self, "error reading adapter info\n"); 416 return; 417 } 418 419 if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 420 sc->eg_pcb[1] != 0x0a) { 421 egprintpcb(sc->eg_pcb); 422 aprint_error_dev(self, "bogus adapter info\n"); 423 return; 424 } 425 426 sc->eg_rom_major = sc->eg_pcb[3]; 427 sc->eg_rom_minor = sc->eg_pcb[2]; 428 sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 429 430 egstop(sc); 431 432 sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ 433 sc->eg_pcb[1] = 0; 434 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 435 aprint_error_dev(self, "can't send Get Station Address\n"); 436 return; 437 } 438 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 439 aprint_error_dev(self, "can't read station address\n"); 440 egprintpcb(sc->eg_pcb); 441 return; 442 } 443 444 /* check Get station address response */ 445 if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { 446 aprint_error_dev(self, "card responded with garbage (1)\n"); 447 egprintpcb(sc->eg_pcb); 448 return; 449 } 450 memcpy(myaddr, &sc->eg_pcb[2], ETHER_ADDR_LEN); 451 452 printf("%s: ROM v%d.%02d %dk address %s\n", device_xname(self), 453 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 454 ether_sprintf(myaddr)); 455 456 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 457 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 458 printf("%s: can't send Set Station Address\n", device_xname(self)); 459 return; 460 } 461 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 462 aprint_error_dev(self, "can't read Set Station Address status\n"); 463 egprintpcb(sc->eg_pcb); 464 return; 465 } 466 if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || 467 sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { 468 aprint_error_dev(self, "card responded with garbage (2)\n"); 469 egprintpcb(sc->eg_pcb); 470 return; 471 } 472 473 /* Initialize ifnet structure. */ 474 strlcpy(ifp->if_xname, device_xname(&sc->sc_dev), IFNAMSIZ); 475 ifp->if_softc = sc; 476 ifp->if_start = egstart; 477 ifp->if_ioctl = egioctl; 478 ifp->if_watchdog = egwatchdog; 479 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 480 IFQ_SET_READY(&ifp->if_snd); 481 482 /* Now we can attach the interface. */ 483 if_attach(ifp); 484 ether_ifattach(ifp, myaddr); 485 486 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 487 IST_EDGE, IPL_NET, egintr, sc); 488 489 #if NRND > 0 490 rnd_attach_source(&sc->rnd_source, device_xname(&sc->sc_dev), 491 RND_TYPE_NET, 0); 492 #endif 493 } 494 495 void 496 eginit(struct eg_softc *sc) 497 { 498 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 499 bus_space_tag_t iot = sc->sc_iot; 500 bus_space_handle_t ioh = sc->sc_ioh; 501 502 /* soft reset the board */ 503 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_FLSH); 504 delay(100); 505 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_ATTN); 506 delay(100); 507 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 508 delay(200); 509 510 sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ 511 sc->eg_pcb[1] = 2; 512 sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ 513 sc->eg_pcb[3] = 0; 514 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) 515 aprint_error_dev(&sc->sc_dev, "can't send Configure 82586\n"); 516 517 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 518 aprint_error_dev(&sc->sc_dev, "can't read Configure 82586 status\n"); 519 egprintpcb(sc->eg_pcb); 520 } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) 521 aprint_error_dev(&sc->sc_dev, "configure card command failed\n"); 522 523 if (sc->eg_inbuf == NULL) { 524 sc->eg_inbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 525 if (sc->eg_inbuf == NULL) { 526 aprint_error_dev(&sc->sc_dev, "can't allocate inbuf\n"); 527 panic("eginit"); 528 } 529 } 530 sc->eg_incount = 0; 531 532 if (sc->eg_outbuf == NULL) { 533 sc->eg_outbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 534 if (sc->eg_outbuf == NULL) { 535 aprint_error_dev(&sc->sc_dev, "can't allocate outbuf\n"); 536 panic("eginit"); 537 } 538 } 539 540 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_CMDE); 541 542 sc->eg_incount = 0; 543 egrecv(sc); 544 545 /* Interface is now `running', with no output active. */ 546 ifp->if_flags |= IFF_RUNNING; 547 ifp->if_flags &= ~IFF_OACTIVE; 548 549 /* Attempt to start output, if any. */ 550 egstart(ifp); 551 } 552 553 void 554 egrecv(struct eg_softc *sc) 555 { 556 557 while (sc->eg_incount < EG_INLEN) { 558 sc->eg_pcb[0] = EG_CMD_RECVPACKET; 559 sc->eg_pcb[1] = 0x08; 560 sc->eg_pcb[2] = 0; /* address not used.. we send zero */ 561 sc->eg_pcb[3] = 0; 562 sc->eg_pcb[4] = 0; 563 sc->eg_pcb[5] = 0; 564 sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ 565 sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; 566 sc->eg_pcb[8] = 0; /* timeout, 0 == none */ 567 sc->eg_pcb[9] = 0; 568 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 569 break; 570 sc->eg_incount++; 571 } 572 } 573 574 void 575 egstart(struct ifnet *ifp) 576 { 577 struct eg_softc *sc = ifp->if_softc; 578 bus_space_tag_t iot = sc->sc_iot; 579 bus_space_handle_t ioh = sc->sc_ioh; 580 struct mbuf *m0, *m; 581 char *buffer; 582 int len; 583 u_int16_t *ptr; 584 585 /* Don't transmit if interface is busy or not running */ 586 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 587 return; 588 589 loop: 590 /* Dequeue the next datagram. */ 591 IFQ_DEQUEUE(&ifp->if_snd, m0); 592 if (m0 == 0) 593 return; 594 595 ifp->if_flags |= IFF_OACTIVE; 596 597 /* We need to use m->m_pkthdr.len, so require the header */ 598 if ((m0->m_flags & M_PKTHDR) == 0) { 599 aprint_error_dev(&sc->sc_dev, "no header mbuf\n"); 600 panic("egstart"); 601 } 602 len = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN); 603 604 #if NBPFILTER > 0 605 if (ifp->if_bpf) 606 bpf_mtap(ifp->if_bpf, m0); 607 #endif 608 609 sc->eg_pcb[0] = EG_CMD_SENDPACKET; 610 sc->eg_pcb[1] = 0x06; 611 sc->eg_pcb[2] = 0; /* address not used, we send zero */ 612 sc->eg_pcb[3] = 0; 613 sc->eg_pcb[4] = 0; 614 sc->eg_pcb[5] = 0; 615 sc->eg_pcb[6] = len; /* length of packet */ 616 sc->eg_pcb[7] = len >> 8; 617 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 618 aprint_error_dev(&sc->sc_dev, "can't send Send Packet command\n"); 619 ifp->if_oerrors++; 620 ifp->if_flags &= ~IFF_OACTIVE; 621 m_freem(m0); 622 goto loop; 623 } 624 625 buffer = sc->eg_outbuf; 626 for (m = m0; m != 0; m = m->m_next) { 627 memcpy(buffer, mtod(m, void *), m->m_len); 628 buffer += m->m_len; 629 } 630 if (len > m0->m_pkthdr.len) 631 memset(buffer, 0, len - m0->m_pkthdr.len); 632 633 /* set direction bit: host -> adapter */ 634 bus_space_write_1(iot, ioh, EG_CONTROL, 635 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 636 637 for (ptr = (u_int16_t *) sc->eg_outbuf; len > 0; len -= 2) { 638 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 639 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 640 ; /* XXX need timeout here */ 641 } 642 643 m_freem(m0); 644 } 645 646 int 647 egintr(void *arg) 648 { 649 struct eg_softc *sc = arg; 650 bus_space_tag_t iot = sc->sc_iot; 651 bus_space_handle_t ioh = sc->sc_ioh; 652 int i, len, serviced; 653 u_int16_t *ptr; 654 655 serviced = 0; 656 657 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 658 egreadPCB(iot, ioh, sc->eg_pcb); 659 switch (sc->eg_pcb[0]) { 660 case EG_RSP_RECVPACKET: 661 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 662 663 /* Set direction bit : Adapter -> host */ 664 bus_space_write_1(iot, ioh, EG_CONTROL, 665 bus_space_read_1(iot, ioh, EG_CONTROL) | EG_CTL_DIR); 666 667 for (ptr = (u_int16_t *) sc->eg_inbuf; 668 len > 0; len -= 2) { 669 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 670 EG_STAT_HRDY)) 671 ; 672 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 673 } 674 675 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 676 egread(sc, sc->eg_inbuf, len); 677 678 sc->eg_incount--; 679 egrecv(sc); 680 serviced = 1; 681 break; 682 683 case EG_RSP_SENDPACKET: 684 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 685 DPRINTF(("%s: packet dropped\n", 686 device_xname(&sc->sc_dev))); 687 sc->sc_ethercom.ec_if.if_oerrors++; 688 } else 689 sc->sc_ethercom.ec_if.if_opackets++; 690 sc->sc_ethercom.ec_if.if_collisions += 691 sc->eg_pcb[8] & 0xf; 692 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 693 egstart(&sc->sc_ethercom.ec_if); 694 serviced = 1; 695 break; 696 697 /* XXX byte-order and type-size bugs here... */ 698 case EG_RSP_GETSTATS: 699 DPRINTF(("%s: Card Statistics\n", 700 device_xname(&sc->sc_dev))); 701 memcpy(&i, &sc->eg_pcb[2], sizeof(i)); 702 DPRINTF(("Receive Packets %d\n", i)); 703 memcpy(&i, &sc->eg_pcb[6], sizeof(i)); 704 DPRINTF(("Transmit Packets %d\n", i)); 705 DPRINTF(("CRC errors %d\n", 706 *(short *) &sc->eg_pcb[10])); 707 DPRINTF(("alignment errors %d\n", 708 *(short *) &sc->eg_pcb[12])); 709 DPRINTF(("no resources errors %d\n", 710 *(short *) &sc->eg_pcb[14])); 711 DPRINTF(("overrun errors %d\n", 712 *(short *) &sc->eg_pcb[16])); 713 serviced = 1; 714 break; 715 716 default: 717 printf("%s: egintr: Unknown response %x??\n", 718 device_xname(&sc->sc_dev), sc->eg_pcb[0]); 719 egprintpcb(sc->eg_pcb); 720 break; 721 } 722 723 #if NRND > 0 724 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 725 #endif 726 } 727 728 return serviced; 729 } 730 731 /* 732 * Pass a packet up to the higher levels. 733 */ 734 void 735 egread(struct eg_softc *sc, void *buf, int len) 736 { 737 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 738 struct mbuf *m; 739 740 if (len <= sizeof(struct ether_header) || 741 len > ETHER_MAX_LEN) { 742 aprint_error_dev(&sc->sc_dev, "invalid packet size %d; dropping\n", len); 743 ifp->if_ierrors++; 744 return; 745 } 746 747 /* Pull packet off interface. */ 748 m = egget(sc, buf, len); 749 if (m == 0) { 750 ifp->if_ierrors++; 751 return; 752 } 753 754 ifp->if_ipackets++; 755 756 #if NBPFILTER > 0 757 /* 758 * Check if there's a BPF listener on this interface. 759 * If so, hand off the raw packet to BPF. 760 */ 761 if (ifp->if_bpf) 762 bpf_mtap(ifp->if_bpf, m); 763 #endif 764 765 (*ifp->if_input)(ifp, m); 766 } 767 768 /* 769 * convert buf into mbufs 770 */ 771 struct mbuf * 772 egget(struct eg_softc *sc, void *buf, int totlen) 773 { 774 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 775 struct mbuf *m, *m0, *newm; 776 int len; 777 778 MGETHDR(m0, M_DONTWAIT, MT_DATA); 779 if (m0 == 0) 780 return (0); 781 m0->m_pkthdr.rcvif = ifp; 782 m0->m_pkthdr.len = totlen; 783 len = MHLEN; 784 m = m0; 785 786 while (totlen > 0) { 787 if (totlen >= MINCLSIZE) { 788 MCLGET(m, M_DONTWAIT); 789 if ((m->m_flags & M_EXT) == 0) 790 goto bad; 791 len = MCLBYTES; 792 } 793 794 m->m_len = len = min(totlen, len); 795 memcpy(mtod(m, void *), buf, len); 796 buf = (char *)buf + len; 797 798 totlen -= len; 799 if (totlen > 0) { 800 MGET(newm, M_DONTWAIT, MT_DATA); 801 if (newm == 0) 802 goto bad; 803 len = MLEN; 804 m = m->m_next = newm; 805 } 806 } 807 808 return (m0); 809 810 bad: 811 m_freem(m0); 812 return (0); 813 } 814 815 int 816 egioctl(struct ifnet *ifp, unsigned long cmd, void *data) 817 { 818 struct eg_softc *sc = ifp->if_softc; 819 struct ifaddr *ifa = (struct ifaddr *)data; 820 int s, error = 0; 821 822 s = splnet(); 823 824 switch (cmd) { 825 826 case SIOCINITIFADDR: 827 ifp->if_flags |= IFF_UP; 828 829 eginit(sc); 830 switch (ifa->ifa_addr->sa_family) { 831 #ifdef INET 832 case AF_INET: 833 arp_ifinit(ifp, ifa); 834 break; 835 #endif 836 default: 837 break; 838 } 839 break; 840 841 case SIOCSIFFLAGS: 842 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 843 break; 844 /* XXX re-use ether_ioctl() */ 845 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 846 case IFF_RUNNING: 847 /* 848 * If interface is marked down and it is running, then 849 * stop it. 850 */ 851 egstop(sc); 852 ifp->if_flags &= ~IFF_RUNNING; 853 break; 854 case IFF_UP: 855 /* 856 * If interface is marked up and it is stopped, then 857 * start it. 858 */ 859 eginit(sc); 860 break; 861 default: 862 sc->eg_pcb[0] = EG_CMD_GETSTATS; 863 sc->eg_pcb[1] = 0; 864 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) { 865 DPRINTF(("write error\n")); 866 } 867 /* 868 * XXX deal with flags changes: 869 * IFF_MULTICAST, IFF_PROMISC, 870 * IFF_LINK0, IFF_LINK1, 871 */ 872 break; 873 } 874 break; 875 876 default: 877 error = ether_ioctl(ifp, cmd, data); 878 break; 879 } 880 881 splx(s); 882 return error; 883 } 884 885 void 886 egreset(struct eg_softc *sc) 887 { 888 int s; 889 890 DPRINTF(("%s: egreset()\n", device_xname(&sc->sc_dev))); 891 s = splnet(); 892 egstop(sc); 893 eginit(sc); 894 splx(s); 895 } 896 897 void 898 egwatchdog(struct ifnet *ifp) 899 { 900 struct eg_softc *sc = ifp->if_softc; 901 902 log(LOG_ERR, "%s: device timeout\n", device_xname(&sc->sc_dev)); 903 sc->sc_ethercom.ec_if.if_oerrors++; 904 905 egreset(sc); 906 } 907 908 void 909 egstop(struct eg_softc *sc) 910 { 911 912 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 913 } 914
Indexes created Fri Oct 03 02:09:57 GMT 2025