if_eg.c revision 1.83
1 /* $NetBSD: if_eg.c,v 1.83 2011/11/19 22:51:23 tls 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 2011/11/19 22:51:23 tls Exp $"); 44 45 #include "opt_inet.h" 46 #include "rnd.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/mbuf.h> 51 #include <sys/socket.h> 52 #include <sys/ioctl.h> 53 #include <sys/errno.h> 54 #include <sys/syslog.h> 55 #include <sys/select.h> 56 #include <sys/device.h> 57 #if NRND > 0 58 #include <sys/rnd.h> 59 #endif 60 61 #include <net/if.h> 62 #include <net/if_dl.h> 63 #include <net/if_types.h> 64 65 #include <net/if_ether.h> 66 67 #ifdef INET 68 #include <netinet/in.h> 69 #include <netinet/in_systm.h> 70 #include <netinet/in_var.h> 71 #include <netinet/ip.h> 72 #include <netinet/if_inarp.h> 73 #endif 74 75 76 #include <net/bpf.h> 77 #include <net/bpfdesc.h> 78 79 #include <sys/cpu.h> 80 #include <sys/intr.h> 81 #include <sys/bus.h> 82 83 #include <dev/isa/isavar.h> 84 #include <dev/isa/if_egreg.h> 85 #include <dev/isa/elink.h> 86 87 /* for debugging convenience */ 88 #ifdef EGDEBUG 89 #define DPRINTF(x) printf x 90 #else 91 #define DPRINTF(x) 92 #endif 93 94 #define EG_INLEN 10 95 #define EG_BUFLEN 0x0670 96 97 #define EG_PCBLEN 64 98 99 /* 100 * Ethernet software status per interface. 101 */ 102 struct eg_softc { 103 struct device sc_dev; 104 void *sc_ih; 105 struct ethercom sc_ethercom; /* Ethernet common part */ 106 bus_space_tag_t sc_iot; /* bus space identifier */ 107 bus_space_handle_t sc_ioh; /* i/o handle */ 108 u_int8_t eg_rom_major; /* Cards ROM version (major number) */ 109 u_int8_t eg_rom_minor; /* Cards ROM version (minor number) */ 110 short eg_ram; /* Amount of RAM on the card */ 111 u_int8_t eg_pcb[EG_PCBLEN]; /* Primary Command Block buffer */ 112 u_int8_t eg_incount; /* Number of buffers currently used */ 113 void * eg_inbuf; /* Incoming packet buffer */ 114 void * eg_outbuf; /* Outgoing packet buffer */ 115 116 #if NRND > 0 117 krndsource_t rnd_source; 118 #endif 119 }; 120 121 int egprobe(device_t, cfdata_t, void *); 122 void egattach(device_t, device_t, void *); 123 124 CFATTACH_DECL(eg, sizeof(struct eg_softc), 125 egprobe, egattach, NULL, NULL); 126 127 int egintr(void *); 128 void eginit(struct eg_softc *); 129 int egioctl(struct ifnet *, u_long, void *); 130 void egrecv(struct eg_softc *); 131 void egstart(struct ifnet *); 132 void egwatchdog(struct ifnet *); 133 void egreset(struct eg_softc *); 134 void egread(struct eg_softc *, void *, int); 135 struct mbuf *egget(struct eg_softc *, void *, int); 136 void egstop(struct eg_softc *); 137 138 static inline void egprintpcb(u_int8_t *); 139 static inline void egprintstat(u_char); 140 static int egoutPCB(bus_space_tag_t, bus_space_handle_t, u_int8_t); 141 static int egreadPCBstat(bus_space_tag_t, bus_space_handle_t, u_int8_t); 142 static int egreadPCBready(bus_space_tag_t, bus_space_handle_t); 143 static int egwritePCB(bus_space_tag_t, bus_space_handle_t, u_int8_t *); 144 static int egreadPCB(bus_space_tag_t, bus_space_handle_t, u_int8_t *); 145 146 /* 147 * Support stuff 148 */ 149 150 static inline void 151 egprintpcb(u_int8_t *pcb) 152 { 153 int i; 154 155 for (i = 0; i < pcb[1] + 2; i++) 156 DPRINTF(("pcb[%2d] = %x\n", i, pcb[i])); 157 } 158 159 160 static inline void 161 egprintstat(u_char b) 162 { 163 DPRINTF(("%s %s %s %s %s %s %s\n", 164 (b & EG_STAT_HCRE)?"HCRE":"", 165 (b & EG_STAT_ACRF)?"ACRF":"", 166 (b & EG_STAT_DIR )?"DIR ":"", 167 (b & EG_STAT_DONE)?"DONE":"", 168 (b & EG_STAT_ASF3)?"ASF3":"", 169 (b & EG_STAT_ASF2)?"ASF2":"", 170 (b & EG_STAT_ASF1)?"ASF1":"")); 171 } 172 173 static int 174 egoutPCB(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t b) 175 { 176 int i; 177 178 for (i=0; i < 4000; i++) { 179 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) { 180 bus_space_write_1(iot, ioh, EG_COMMAND, b); 181 return 0; 182 } 183 delay(10); 184 } 185 DPRINTF(("egoutPCB failed\n")); 186 return 1; 187 } 188 189 static int 190 egreadPCBstat(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t statb) 191 { 192 int i; 193 194 for (i=0; i < 5000; i++) { 195 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 196 EG_PCB_STAT) != EG_PCB_NULL) 197 break; 198 delay(10); 199 } 200 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) == statb) 201 return 0; 202 return 1; 203 } 204 205 static int 206 egreadPCBready(bus_space_tag_t iot, bus_space_handle_t ioh) 207 { 208 int i; 209 210 for (i=0; i < 10000; i++) { 211 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) 212 return 0; 213 delay(5); 214 } 215 DPRINTF(("PCB read not ready\n")); 216 return 1; 217 } 218 219 static int 220 egwritePCB(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t *pcb) 221 { 222 int i; 223 u_int8_t len; 224 225 bus_space_write_1(iot, ioh, EG_CONTROL, 226 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 227 228 len = pcb[1] + 2; 229 for (i = 0; i < len; i++) 230 egoutPCB(iot, ioh, pcb[i]); 231 232 for (i=0; i < 4000; i++) { 233 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) 234 break; 235 delay(10); 236 } 237 238 bus_space_write_1(iot, ioh, EG_CONTROL, 239 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_DONE); 240 241 egoutPCB(iot, ioh, len); 242 243 if (egreadPCBstat(iot, ioh, EG_PCB_ACCEPT)) 244 return 1; 245 return 0; 246 } 247 248 static int 249 egreadPCB(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t *pcb) 250 { 251 int i; 252 253 bus_space_write_1(iot, ioh, EG_CONTROL, 254 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 255 256 memset(pcb, 0, EG_PCBLEN); 257 258 if (egreadPCBready(iot, ioh)) 259 return 1; 260 261 pcb[0] = bus_space_read_1(iot, ioh, EG_COMMAND); 262 263 if (egreadPCBready(iot, ioh)) 264 return 1; 265 266 pcb[1] = bus_space_read_1(iot, ioh, EG_COMMAND); 267 268 if (pcb[1] > 62) { 269 DPRINTF(("len %d too large\n", pcb[1])); 270 return 1; 271 } 272 273 for (i = 0; i < pcb[1]; i++) { 274 if (egreadPCBready(iot, ioh)) 275 return 1; 276 pcb[2+i] = bus_space_read_1(iot, ioh, EG_COMMAND); 277 } 278 if (egreadPCBready(iot, ioh)) 279 return 1; 280 if (egreadPCBstat(iot, ioh, EG_PCB_DONE)) 281 return 1; 282 if (bus_space_read_1(iot, ioh, EG_COMMAND) != pcb[1] + 2) { 283 return 1; 284 } 285 286 bus_space_write_1(iot, ioh, EG_CONTROL, 287 (bus_space_read_1(iot, ioh, EG_CONTROL) & 288 ~EG_PCB_STAT) | EG_PCB_ACCEPT); 289 290 return 0; 291 } 292 293 /* 294 * Real stuff 295 */ 296 297 int 298 egprobe(device_t parent, cfdata_t match, void *aux) 299 { 300 struct isa_attach_args *ia = aux; 301 bus_space_tag_t iot = ia->ia_iot; 302 bus_space_handle_t ioh; 303 int i, rval; 304 static u_int8_t pcb[EG_PCBLEN]; 305 306 rval = 0; 307 308 /* 309 * XXX This probe is slow. If there are no ISA expansion slots, 310 * then skip it. 311 */ 312 if (isa_get_slotcount() == 0) 313 return (0); 314 315 if (ia->ia_nio < 1) 316 return (0); 317 if (ia->ia_nirq < 1) 318 return (0); 319 320 if (ISA_DIRECT_CONFIG(ia)) 321 return (0); 322 323 /* Disallow wildcarded i/o address. */ 324 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 325 return (0); 326 327 /* Disallow wildcarded IRQ. */ 328 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 329 return (0); 330 331 if ((ia->ia_io[0].ir_addr & ~0x07f0) != 0) { 332 DPRINTF(("Weird iobase %x\n", ia->ia_io[0].ir_addr)); 333 return 0; 334 } 335 336 /* Map i/o space. */ 337 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 338 DPRINTF(("egprobe: can't map i/o space in probe\n")); 339 return 0; 340 } 341 342 /* hard reset card */ 343 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_RESET); 344 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 345 for (i = 0; i < 500; i++) { 346 delay(1000); 347 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 348 EG_PCB_STAT) == EG_PCB_NULL) 349 break; 350 } 351 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) { 352 DPRINTF(("egprobe: Reset failed\n")); 353 goto out; 354 } 355 pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 356 pcb[1] = 0; 357 if (egwritePCB(iot, ioh, pcb) != 0) 358 goto out; 359 360 if ((egreadPCB(iot, ioh, pcb) != 0) || 361 pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 362 pcb[1] != 0x0a) { 363 egprintpcb(pcb); 364 goto out; 365 } 366 367 ia->ia_nio = 1; 368 ia->ia_io[0].ir_size = 0x08; 369 370 ia->ia_nirq = 1; 371 372 ia->ia_niomem = 0; 373 ia->ia_ndrq = 0; 374 375 rval = 1; 376 377 out: 378 bus_space_unmap(iot, ioh, 0x08); 379 return rval; 380 } 381 382 void 383 egattach(device_t parent, device_t self, void *aux) 384 { 385 struct eg_softc *sc = (void *)self; 386 struct isa_attach_args *ia = aux; 387 bus_space_tag_t iot = ia->ia_iot; 388 bus_space_handle_t ioh; 389 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 390 u_int8_t myaddr[ETHER_ADDR_LEN]; 391 392 printf("\n"); 393 394 /* Map i/o space. */ 395 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 396 aprint_error_dev(self, "can't map i/o space\n"); 397 return; 398 } 399 400 sc->sc_iot = iot; 401 sc->sc_ioh = ioh; 402 403 sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 404 sc->eg_pcb[1] = 0; 405 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 406 aprint_error_dev(self, "error requesting adapter info\n"); 407 return; 408 } 409 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 410 egprintpcb(sc->eg_pcb); 411 aprint_error_dev(self, "error reading adapter info\n"); 412 return; 413 } 414 415 if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 416 sc->eg_pcb[1] != 0x0a) { 417 egprintpcb(sc->eg_pcb); 418 aprint_error_dev(self, "bogus adapter info\n"); 419 return; 420 } 421 422 sc->eg_rom_major = sc->eg_pcb[3]; 423 sc->eg_rom_minor = sc->eg_pcb[2]; 424 sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 425 426 egstop(sc); 427 428 sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ 429 sc->eg_pcb[1] = 0; 430 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 431 aprint_error_dev(self, "can't send Get Station Address\n"); 432 return; 433 } 434 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 435 aprint_error_dev(self, "can't read station address\n"); 436 egprintpcb(sc->eg_pcb); 437 return; 438 } 439 440 /* check Get station address response */ 441 if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { 442 aprint_error_dev(self, "card responded with garbage (1)\n"); 443 egprintpcb(sc->eg_pcb); 444 return; 445 } 446 memcpy(myaddr, &sc->eg_pcb[2], ETHER_ADDR_LEN); 447 448 printf("%s: ROM v%d.%02d %dk address %s\n", device_xname(self), 449 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 450 ether_sprintf(myaddr)); 451 452 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 453 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 454 printf("%s: can't send Set Station Address\n", device_xname(self)); 455 return; 456 } 457 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 458 aprint_error_dev(self, "can't read Set Station Address status\n"); 459 egprintpcb(sc->eg_pcb); 460 return; 461 } 462 if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || 463 sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { 464 aprint_error_dev(self, "card responded with garbage (2)\n"); 465 egprintpcb(sc->eg_pcb); 466 return; 467 } 468 469 /* Initialize ifnet structure. */ 470 strlcpy(ifp->if_xname, device_xname(&sc->sc_dev), IFNAMSIZ); 471 ifp->if_softc = sc; 472 ifp->if_start = egstart; 473 ifp->if_ioctl = egioctl; 474 ifp->if_watchdog = egwatchdog; 475 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 476 IFQ_SET_READY(&ifp->if_snd); 477 478 /* Now we can attach the interface. */ 479 if_attach(ifp); 480 ether_ifattach(ifp, myaddr); 481 482 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 483 IST_EDGE, IPL_NET, egintr, sc); 484 485 #if NRND > 0 486 rnd_attach_source(&sc->rnd_source, device_xname(&sc->sc_dev), 487 RND_TYPE_NET, 0); 488 #endif 489 } 490 491 void 492 eginit(struct eg_softc *sc) 493 { 494 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 495 bus_space_tag_t iot = sc->sc_iot; 496 bus_space_handle_t ioh = sc->sc_ioh; 497 498 /* soft reset the board */ 499 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_FLSH); 500 delay(100); 501 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_ATTN); 502 delay(100); 503 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 504 delay(200); 505 506 sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ 507 sc->eg_pcb[1] = 2; 508 sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ 509 sc->eg_pcb[3] = 0; 510 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) 511 aprint_error_dev(&sc->sc_dev, "can't send Configure 82586\n"); 512 513 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 514 aprint_error_dev(&sc->sc_dev, "can't read Configure 82586 status\n"); 515 egprintpcb(sc->eg_pcb); 516 } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) 517 aprint_error_dev(&sc->sc_dev, "configure card command failed\n"); 518 519 if (sc->eg_inbuf == NULL) { 520 sc->eg_inbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 521 if (sc->eg_inbuf == NULL) { 522 aprint_error_dev(&sc->sc_dev, "can't allocate inbuf\n"); 523 panic("eginit"); 524 } 525 } 526 sc->eg_incount = 0; 527 528 if (sc->eg_outbuf == NULL) { 529 sc->eg_outbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 530 if (sc->eg_outbuf == NULL) { 531 aprint_error_dev(&sc->sc_dev, "can't allocate outbuf\n"); 532 panic("eginit"); 533 } 534 } 535 536 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_CMDE); 537 538 sc->eg_incount = 0; 539 egrecv(sc); 540 541 /* Interface is now `running', with no output active. */ 542 ifp->if_flags |= IFF_RUNNING; 543 ifp->if_flags &= ~IFF_OACTIVE; 544 545 /* Attempt to start output, if any. */ 546 egstart(ifp); 547 } 548 549 void 550 egrecv(struct eg_softc *sc) 551 { 552 553 while (sc->eg_incount < EG_INLEN) { 554 sc->eg_pcb[0] = EG_CMD_RECVPACKET; 555 sc->eg_pcb[1] = 0x08; 556 sc->eg_pcb[2] = 0; /* address not used.. we send zero */ 557 sc->eg_pcb[3] = 0; 558 sc->eg_pcb[4] = 0; 559 sc->eg_pcb[5] = 0; 560 sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ 561 sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; 562 sc->eg_pcb[8] = 0; /* timeout, 0 == none */ 563 sc->eg_pcb[9] = 0; 564 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 565 break; 566 sc->eg_incount++; 567 } 568 } 569 570 void 571 egstart(struct ifnet *ifp) 572 { 573 struct eg_softc *sc = ifp->if_softc; 574 bus_space_tag_t iot = sc->sc_iot; 575 bus_space_handle_t ioh = sc->sc_ioh; 576 struct mbuf *m0, *m; 577 char *buffer; 578 int len; 579 u_int16_t *ptr; 580 581 /* Don't transmit if interface is busy or not running */ 582 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 583 return; 584 585 loop: 586 /* Dequeue the next datagram. */ 587 IFQ_DEQUEUE(&ifp->if_snd, m0); 588 if (m0 == 0) 589 return; 590 591 ifp->if_flags |= IFF_OACTIVE; 592 593 /* We need to use m->m_pkthdr.len, so require the header */ 594 if ((m0->m_flags & M_PKTHDR) == 0) { 595 aprint_error_dev(&sc->sc_dev, "no header mbuf\n"); 596 panic("egstart"); 597 } 598 len = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN); 599 600 bpf_mtap(ifp, m0); 601 602 sc->eg_pcb[0] = EG_CMD_SENDPACKET; 603 sc->eg_pcb[1] = 0x06; 604 sc->eg_pcb[2] = 0; /* address not used, we send zero */ 605 sc->eg_pcb[3] = 0; 606 sc->eg_pcb[4] = 0; 607 sc->eg_pcb[5] = 0; 608 sc->eg_pcb[6] = len; /* length of packet */ 609 sc->eg_pcb[7] = len >> 8; 610 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 611 aprint_error_dev(&sc->sc_dev, "can't send Send Packet command\n"); 612 ifp->if_oerrors++; 613 ifp->if_flags &= ~IFF_OACTIVE; 614 m_freem(m0); 615 goto loop; 616 } 617 618 buffer = sc->eg_outbuf; 619 for (m = m0; m != 0; m = m->m_next) { 620 memcpy(buffer, mtod(m, void *), m->m_len); 621 buffer += m->m_len; 622 } 623 if (len > m0->m_pkthdr.len) 624 memset(buffer, 0, len - m0->m_pkthdr.len); 625 626 /* set direction bit: host -> adapter */ 627 bus_space_write_1(iot, ioh, EG_CONTROL, 628 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 629 630 for (ptr = (u_int16_t *) sc->eg_outbuf; len > 0; len -= 2) { 631 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 632 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 633 ; /* XXX need timeout here */ 634 } 635 636 m_freem(m0); 637 } 638 639 int 640 egintr(void *arg) 641 { 642 struct eg_softc *sc = arg; 643 bus_space_tag_t iot = sc->sc_iot; 644 bus_space_handle_t ioh = sc->sc_ioh; 645 int i, len, serviced; 646 u_int16_t *ptr; 647 648 serviced = 0; 649 650 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 651 egreadPCB(iot, ioh, sc->eg_pcb); 652 switch (sc->eg_pcb[0]) { 653 case EG_RSP_RECVPACKET: 654 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 655 656 /* Set direction bit : Adapter -> host */ 657 bus_space_write_1(iot, ioh, EG_CONTROL, 658 bus_space_read_1(iot, ioh, EG_CONTROL) | EG_CTL_DIR); 659 660 for (ptr = (u_int16_t *) sc->eg_inbuf; 661 len > 0; len -= 2) { 662 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 663 EG_STAT_HRDY)) 664 ; 665 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 666 } 667 668 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 669 egread(sc, sc->eg_inbuf, len); 670 671 sc->eg_incount--; 672 egrecv(sc); 673 serviced = 1; 674 break; 675 676 case EG_RSP_SENDPACKET: 677 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 678 DPRINTF(("%s: packet dropped\n", 679 device_xname(&sc->sc_dev))); 680 sc->sc_ethercom.ec_if.if_oerrors++; 681 } else 682 sc->sc_ethercom.ec_if.if_opackets++; 683 sc->sc_ethercom.ec_if.if_collisions += 684 sc->eg_pcb[8] & 0xf; 685 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 686 egstart(&sc->sc_ethercom.ec_if); 687 serviced = 1; 688 break; 689 690 /* XXX byte-order and type-size bugs here... */ 691 case EG_RSP_GETSTATS: 692 DPRINTF(("%s: Card Statistics\n", 693 device_xname(&sc->sc_dev))); 694 memcpy(&i, &sc->eg_pcb[2], sizeof(i)); 695 DPRINTF(("Receive Packets %d\n", i)); 696 memcpy(&i, &sc->eg_pcb[6], sizeof(i)); 697 DPRINTF(("Transmit Packets %d\n", i)); 698 DPRINTF(("CRC errors %d\n", 699 *(short *) &sc->eg_pcb[10])); 700 DPRINTF(("alignment errors %d\n", 701 *(short *) &sc->eg_pcb[12])); 702 DPRINTF(("no resources errors %d\n", 703 *(short *) &sc->eg_pcb[14])); 704 DPRINTF(("overrun errors %d\n", 705 *(short *) &sc->eg_pcb[16])); 706 serviced = 1; 707 break; 708 709 default: 710 printf("%s: egintr: Unknown response %x??\n", 711 device_xname(&sc->sc_dev), sc->eg_pcb[0]); 712 egprintpcb(sc->eg_pcb); 713 break; 714 } 715 716 #if NRND > 0 717 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 718 #endif 719 } 720 721 return serviced; 722 } 723 724 /* 725 * Pass a packet up to the higher levels. 726 */ 727 void 728 egread(struct eg_softc *sc, void *buf, int len) 729 { 730 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 731 struct mbuf *m; 732 733 if (len <= sizeof(struct ether_header) || 734 len > ETHER_MAX_LEN) { 735 aprint_error_dev(&sc->sc_dev, "invalid packet size %d; dropping\n", len); 736 ifp->if_ierrors++; 737 return; 738 } 739 740 /* Pull packet off interface. */ 741 m = egget(sc, buf, len); 742 if (m == 0) { 743 ifp->if_ierrors++; 744 return; 745 } 746 747 ifp->if_ipackets++; 748 749 /* 750 * Check if there's a BPF listener on this interface. 751 * If so, hand off the raw packet to BPF. 752 */ 753 bpf_mtap(ifp, m); 754 755 (*ifp->if_input)(ifp, m); 756 } 757 758 /* 759 * convert buf into mbufs 760 */ 761 struct mbuf * 762 egget(struct eg_softc *sc, void *buf, int totlen) 763 { 764 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 765 struct mbuf *m, *m0, *newm; 766 int len; 767 768 MGETHDR(m0, M_DONTWAIT, MT_DATA); 769 if (m0 == 0) 770 return (0); 771 m0->m_pkthdr.rcvif = ifp; 772 m0->m_pkthdr.len = totlen; 773 len = MHLEN; 774 m = m0; 775 776 while (totlen > 0) { 777 if (totlen >= MINCLSIZE) { 778 MCLGET(m, M_DONTWAIT); 779 if ((m->m_flags & M_EXT) == 0) 780 goto bad; 781 len = MCLBYTES; 782 } 783 784 m->m_len = len = min(totlen, len); 785 memcpy(mtod(m, void *), buf, len); 786 buf = (char *)buf + len; 787 788 totlen -= len; 789 if (totlen > 0) { 790 MGET(newm, M_DONTWAIT, MT_DATA); 791 if (newm == 0) 792 goto bad; 793 len = MLEN; 794 m = m->m_next = newm; 795 } 796 } 797 798 return (m0); 799 800 bad: 801 m_freem(m0); 802 return (0); 803 } 804 805 int 806 egioctl(struct ifnet *ifp, unsigned long cmd, void *data) 807 { 808 struct eg_softc *sc = ifp->if_softc; 809 struct ifaddr *ifa = (struct ifaddr *)data; 810 int s, error = 0; 811 812 s = splnet(); 813 814 switch (cmd) { 815 816 case SIOCINITIFADDR: 817 ifp->if_flags |= IFF_UP; 818 819 eginit(sc); 820 switch (ifa->ifa_addr->sa_family) { 821 #ifdef INET 822 case AF_INET: 823 arp_ifinit(ifp, ifa); 824 break; 825 #endif 826 default: 827 break; 828 } 829 break; 830 831 case SIOCSIFFLAGS: 832 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 833 break; 834 /* XXX re-use ether_ioctl() */ 835 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 836 case IFF_RUNNING: 837 /* 838 * If interface is marked down and it is running, then 839 * stop it. 840 */ 841 egstop(sc); 842 ifp->if_flags &= ~IFF_RUNNING; 843 break; 844 case IFF_UP: 845 /* 846 * If interface is marked up and it is stopped, then 847 * start it. 848 */ 849 eginit(sc); 850 break; 851 default: 852 sc->eg_pcb[0] = EG_CMD_GETSTATS; 853 sc->eg_pcb[1] = 0; 854 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) { 855 DPRINTF(("write error\n")); 856 } 857 /* 858 * XXX deal with flags changes: 859 * IFF_MULTICAST, IFF_PROMISC, 860 * IFF_LINK0, IFF_LINK1, 861 */ 862 break; 863 } 864 break; 865 866 default: 867 error = ether_ioctl(ifp, cmd, data); 868 break; 869 } 870 871 splx(s); 872 return error; 873 } 874 875 void 876 egreset(struct eg_softc *sc) 877 { 878 int s; 879 880 DPRINTF(("%s: egreset()\n", device_xname(&sc->sc_dev))); 881 s = splnet(); 882 egstop(sc); 883 eginit(sc); 884 splx(s); 885 } 886 887 void 888 egwatchdog(struct ifnet *ifp) 889 { 890 struct eg_softc *sc = ifp->if_softc; 891 892 log(LOG_ERR, "%s: device timeout\n", device_xname(&sc->sc_dev)); 893 sc->sc_ethercom.ec_if.if_oerrors++; 894 895 egreset(sc); 896 } 897 898 void 899 egstop(struct eg_softc *sc) 900 { 901 902 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 903 } 904
Indexes created Thu Oct 02 14:10:14 GMT 2025