if_eg.c revision 1.85
1 /* $NetBSD: if_eg.c,v 1.85 2012/10/27 17:18:24 chs 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 1.85 2012/10/27 17:18:24 chs 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 device_t 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_NEW(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 = device_private(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 sc->sc_dev = self; 388 389 printf("\n"); 390 391 /* Map i/o space. */ 392 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 393 aprint_error_dev(self, "can't map i/o space\n"); 394 return; 395 } 396 397 sc->sc_iot = iot; 398 sc->sc_ioh = ioh; 399 400 sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 401 sc->eg_pcb[1] = 0; 402 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 403 aprint_error_dev(self, "error requesting adapter info\n"); 404 return; 405 } 406 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 407 egprintpcb(sc->eg_pcb); 408 aprint_error_dev(self, "error reading adapter info\n"); 409 return; 410 } 411 412 if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 413 sc->eg_pcb[1] != 0x0a) { 414 egprintpcb(sc->eg_pcb); 415 aprint_error_dev(self, "bogus adapter info\n"); 416 return; 417 } 418 419 sc->eg_rom_major = sc->eg_pcb[3]; 420 sc->eg_rom_minor = sc->eg_pcb[2]; 421 sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 422 423 egstop(sc); 424 425 sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ 426 sc->eg_pcb[1] = 0; 427 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 428 aprint_error_dev(self, "can't send Get Station Address\n"); 429 return; 430 } 431 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 432 aprint_error_dev(self, "can't read station address\n"); 433 egprintpcb(sc->eg_pcb); 434 return; 435 } 436 437 /* check Get station address response */ 438 if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { 439 aprint_error_dev(self, "card responded with garbage (1)\n"); 440 egprintpcb(sc->eg_pcb); 441 return; 442 } 443 memcpy(myaddr, &sc->eg_pcb[2], ETHER_ADDR_LEN); 444 445 printf("%s: ROM v%d.%02d %dk address %s\n", device_xname(self), 446 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 447 ether_sprintf(myaddr)); 448 449 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 450 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 451 printf("%s: can't send Set Station Address\n", device_xname(self)); 452 return; 453 } 454 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 455 aprint_error_dev(self, "can't read Set Station Address status\n"); 456 egprintpcb(sc->eg_pcb); 457 return; 458 } 459 if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || 460 sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { 461 aprint_error_dev(self, "card responded with garbage (2)\n"); 462 egprintpcb(sc->eg_pcb); 463 return; 464 } 465 466 /* Initialize ifnet structure. */ 467 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 468 ifp->if_softc = sc; 469 ifp->if_start = egstart; 470 ifp->if_ioctl = egioctl; 471 ifp->if_watchdog = egwatchdog; 472 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 473 IFQ_SET_READY(&ifp->if_snd); 474 475 /* Now we can attach the interface. */ 476 if_attach(ifp); 477 ether_ifattach(ifp, myaddr); 478 479 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 480 IST_EDGE, IPL_NET, egintr, sc); 481 482 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 483 RND_TYPE_NET, 0); 484 } 485 486 void 487 eginit(struct eg_softc *sc) 488 { 489 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 490 bus_space_tag_t iot = sc->sc_iot; 491 bus_space_handle_t ioh = sc->sc_ioh; 492 493 /* soft reset the board */ 494 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_FLSH); 495 delay(100); 496 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_ATTN); 497 delay(100); 498 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 499 delay(200); 500 501 sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ 502 sc->eg_pcb[1] = 2; 503 sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ 504 sc->eg_pcb[3] = 0; 505 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) 506 aprint_error_dev(sc->sc_dev, "can't send Configure 82586\n"); 507 508 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 509 aprint_error_dev(sc->sc_dev, "can't read Configure 82586 status\n"); 510 egprintpcb(sc->eg_pcb); 511 } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) 512 aprint_error_dev(sc->sc_dev, "configure card command failed\n"); 513 514 if (sc->eg_inbuf == NULL) { 515 sc->eg_inbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 516 if (sc->eg_inbuf == NULL) { 517 aprint_error_dev(sc->sc_dev, "can't allocate inbuf\n"); 518 panic("eginit"); 519 } 520 } 521 sc->eg_incount = 0; 522 523 if (sc->eg_outbuf == NULL) { 524 sc->eg_outbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 525 if (sc->eg_outbuf == NULL) { 526 aprint_error_dev(sc->sc_dev, "can't allocate outbuf\n"); 527 panic("eginit"); 528 } 529 } 530 531 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_CMDE); 532 533 sc->eg_incount = 0; 534 egrecv(sc); 535 536 /* Interface is now `running', with no output active. */ 537 ifp->if_flags |= IFF_RUNNING; 538 ifp->if_flags &= ~IFF_OACTIVE; 539 540 /* Attempt to start output, if any. */ 541 egstart(ifp); 542 } 543 544 void 545 egrecv(struct eg_softc *sc) 546 { 547 548 while (sc->eg_incount < EG_INLEN) { 549 sc->eg_pcb[0] = EG_CMD_RECVPACKET; 550 sc->eg_pcb[1] = 0x08; 551 sc->eg_pcb[2] = 0; /* address not used.. we send zero */ 552 sc->eg_pcb[3] = 0; 553 sc->eg_pcb[4] = 0; 554 sc->eg_pcb[5] = 0; 555 sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ 556 sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; 557 sc->eg_pcb[8] = 0; /* timeout, 0 == none */ 558 sc->eg_pcb[9] = 0; 559 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 560 break; 561 sc->eg_incount++; 562 } 563 } 564 565 void 566 egstart(struct ifnet *ifp) 567 { 568 struct eg_softc *sc = ifp->if_softc; 569 bus_space_tag_t iot = sc->sc_iot; 570 bus_space_handle_t ioh = sc->sc_ioh; 571 struct mbuf *m0, *m; 572 char *buffer; 573 int len; 574 u_int16_t *ptr; 575 576 /* Don't transmit if interface is busy or not running */ 577 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 578 return; 579 580 loop: 581 /* Dequeue the next datagram. */ 582 IFQ_DEQUEUE(&ifp->if_snd, m0); 583 if (m0 == 0) 584 return; 585 586 ifp->if_flags |= IFF_OACTIVE; 587 588 /* We need to use m->m_pkthdr.len, so require the header */ 589 if ((m0->m_flags & M_PKTHDR) == 0) { 590 aprint_error_dev(sc->sc_dev, "no header mbuf\n"); 591 panic("egstart"); 592 } 593 len = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN); 594 595 bpf_mtap(ifp, m0); 596 597 sc->eg_pcb[0] = EG_CMD_SENDPACKET; 598 sc->eg_pcb[1] = 0x06; 599 sc->eg_pcb[2] = 0; /* address not used, we send zero */ 600 sc->eg_pcb[3] = 0; 601 sc->eg_pcb[4] = 0; 602 sc->eg_pcb[5] = 0; 603 sc->eg_pcb[6] = len; /* length of packet */ 604 sc->eg_pcb[7] = len >> 8; 605 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 606 aprint_error_dev(sc->sc_dev, "can't send Send Packet command\n"); 607 ifp->if_oerrors++; 608 ifp->if_flags &= ~IFF_OACTIVE; 609 m_freem(m0); 610 goto loop; 611 } 612 613 buffer = sc->eg_outbuf; 614 for (m = m0; m != 0; m = m->m_next) { 615 memcpy(buffer, mtod(m, void *), m->m_len); 616 buffer += m->m_len; 617 } 618 if (len > m0->m_pkthdr.len) 619 memset(buffer, 0, len - m0->m_pkthdr.len); 620 621 /* set direction bit: host -> adapter */ 622 bus_space_write_1(iot, ioh, EG_CONTROL, 623 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 624 625 for (ptr = (u_int16_t *) sc->eg_outbuf; len > 0; len -= 2) { 626 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 627 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 628 ; /* XXX need timeout here */ 629 } 630 631 m_freem(m0); 632 } 633 634 int 635 egintr(void *arg) 636 { 637 struct eg_softc *sc = arg; 638 bus_space_tag_t iot = sc->sc_iot; 639 bus_space_handle_t ioh = sc->sc_ioh; 640 int i, len, serviced; 641 u_int16_t *ptr; 642 643 serviced = 0; 644 645 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 646 egreadPCB(iot, ioh, sc->eg_pcb); 647 switch (sc->eg_pcb[0]) { 648 case EG_RSP_RECVPACKET: 649 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 650 651 /* Set direction bit : Adapter -> host */ 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_inbuf; 656 len > 0; len -= 2) { 657 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 658 EG_STAT_HRDY)) 659 ; 660 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 661 } 662 663 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 664 egread(sc, sc->eg_inbuf, len); 665 666 sc->eg_incount--; 667 egrecv(sc); 668 serviced = 1; 669 break; 670 671 case EG_RSP_SENDPACKET: 672 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 673 DPRINTF(("%s: packet dropped\n", 674 device_xname(sc->sc_dev))); 675 sc->sc_ethercom.ec_if.if_oerrors++; 676 } else 677 sc->sc_ethercom.ec_if.if_opackets++; 678 sc->sc_ethercom.ec_if.if_collisions += 679 sc->eg_pcb[8] & 0xf; 680 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 681 egstart(&sc->sc_ethercom.ec_if); 682 serviced = 1; 683 break; 684 685 /* XXX byte-order and type-size bugs here... */ 686 case EG_RSP_GETSTATS: 687 DPRINTF(("%s: Card Statistics\n", 688 device_xname(sc->sc_dev))); 689 memcpy(&i, &sc->eg_pcb[2], sizeof(i)); 690 DPRINTF(("Receive Packets %d\n", i)); 691 memcpy(&i, &sc->eg_pcb[6], sizeof(i)); 692 DPRINTF(("Transmit Packets %d\n", i)); 693 DPRINTF(("CRC errors %d\n", 694 *(short *) &sc->eg_pcb[10])); 695 DPRINTF(("alignment errors %d\n", 696 *(short *) &sc->eg_pcb[12])); 697 DPRINTF(("no resources errors %d\n", 698 *(short *) &sc->eg_pcb[14])); 699 DPRINTF(("overrun errors %d\n", 700 *(short *) &sc->eg_pcb[16])); 701 serviced = 1; 702 break; 703 704 default: 705 printf("%s: egintr: Unknown response %x??\n", 706 device_xname(sc->sc_dev), sc->eg_pcb[0]); 707 egprintpcb(sc->eg_pcb); 708 break; 709 } 710 711 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 712 } 713 714 return serviced; 715 } 716 717 /* 718 * Pass a packet up to the higher levels. 719 */ 720 void 721 egread(struct eg_softc *sc, void *buf, int len) 722 { 723 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 724 struct mbuf *m; 725 726 if (len <= sizeof(struct ether_header) || 727 len > ETHER_MAX_LEN) { 728 aprint_error_dev(sc->sc_dev, "invalid packet size %d; dropping\n", len); 729 ifp->if_ierrors++; 730 return; 731 } 732 733 /* Pull packet off interface. */ 734 m = egget(sc, buf, len); 735 if (m == 0) { 736 ifp->if_ierrors++; 737 return; 738 } 739 740 ifp->if_ipackets++; 741 742 /* 743 * Check if there's a BPF listener on this interface. 744 * If so, hand off the raw packet to BPF. 745 */ 746 bpf_mtap(ifp, m); 747 748 (*ifp->if_input)(ifp, m); 749 } 750 751 /* 752 * convert buf into mbufs 753 */ 754 struct mbuf * 755 egget(struct eg_softc *sc, void *buf, int totlen) 756 { 757 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 758 struct mbuf *m, *m0, *newm; 759 int len; 760 761 MGETHDR(m0, M_DONTWAIT, MT_DATA); 762 if (m0 == 0) 763 return (0); 764 m0->m_pkthdr.rcvif = ifp; 765 m0->m_pkthdr.len = totlen; 766 len = MHLEN; 767 m = m0; 768 769 while (totlen > 0) { 770 if (totlen >= MINCLSIZE) { 771 MCLGET(m, M_DONTWAIT); 772 if ((m->m_flags & M_EXT) == 0) 773 goto bad; 774 len = MCLBYTES; 775 } 776 777 m->m_len = len = min(totlen, len); 778 memcpy(mtod(m, void *), buf, len); 779 buf = (char *)buf + len; 780 781 totlen -= len; 782 if (totlen > 0) { 783 MGET(newm, M_DONTWAIT, MT_DATA); 784 if (newm == 0) 785 goto bad; 786 len = MLEN; 787 m = m->m_next = newm; 788 } 789 } 790 791 return (m0); 792 793 bad: 794 m_freem(m0); 795 return (0); 796 } 797 798 int 799 egioctl(struct ifnet *ifp, unsigned long cmd, void *data) 800 { 801 struct eg_softc *sc = ifp->if_softc; 802 struct ifaddr *ifa = (struct ifaddr *)data; 803 int s, error = 0; 804 805 s = splnet(); 806 807 switch (cmd) { 808 809 case SIOCINITIFADDR: 810 ifp->if_flags |= IFF_UP; 811 812 eginit(sc); 813 switch (ifa->ifa_addr->sa_family) { 814 #ifdef INET 815 case AF_INET: 816 arp_ifinit(ifp, ifa); 817 break; 818 #endif 819 default: 820 break; 821 } 822 break; 823 824 case SIOCSIFFLAGS: 825 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 826 break; 827 /* XXX re-use ether_ioctl() */ 828 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 829 case IFF_RUNNING: 830 /* 831 * If interface is marked down and it is running, then 832 * stop it. 833 */ 834 egstop(sc); 835 ifp->if_flags &= ~IFF_RUNNING; 836 break; 837 case IFF_UP: 838 /* 839 * If interface is marked up and it is stopped, then 840 * start it. 841 */ 842 eginit(sc); 843 break; 844 default: 845 sc->eg_pcb[0] = EG_CMD_GETSTATS; 846 sc->eg_pcb[1] = 0; 847 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) { 848 DPRINTF(("write error\n")); 849 } 850 /* 851 * XXX deal with flags changes: 852 * IFF_MULTICAST, IFF_PROMISC, 853 * IFF_LINK0, IFF_LINK1, 854 */ 855 break; 856 } 857 break; 858 859 default: 860 error = ether_ioctl(ifp, cmd, data); 861 break; 862 } 863 864 splx(s); 865 return error; 866 } 867 868 void 869 egreset(struct eg_softc *sc) 870 { 871 int s; 872 873 DPRINTF(("%s: egreset()\n", device_xname(sc->sc_dev))); 874 s = splnet(); 875 egstop(sc); 876 eginit(sc); 877 splx(s); 878 } 879 880 void 881 egwatchdog(struct ifnet *ifp) 882 { 883 struct eg_softc *sc = ifp->if_softc; 884 885 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 886 sc->sc_ethercom.ec_if.if_oerrors++; 887 888 egreset(sc); 889 } 890 891 void 892 egstop(struct eg_softc *sc) 893 { 894 895 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 896 } 897
Indexes created Thu Oct 02 10:09:58 GMT 2025