if_eg.c revision 1.87
1 /* $NetBSD: if_eg.c,v 1.87 2014/08/10 16:44:35 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 1.87 2014/08/10 16:44:35 tls 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 int egoutPCB(bus_space_tag_t, bus_space_handle_t, u_int8_t); 135 static int egreadPCBstat(bus_space_tag_t, bus_space_handle_t, u_int8_t); 136 static int egreadPCBready(bus_space_tag_t, bus_space_handle_t); 137 static int egwritePCB(bus_space_tag_t, bus_space_handle_t, u_int8_t *); 138 static int egreadPCB(bus_space_tag_t, bus_space_handle_t, u_int8_t *); 139 140 /* 141 * Support stuff 142 */ 143 144 static inline void 145 egprintpcb(u_int8_t *pcb) 146 { 147 int i; 148 149 for (i = 0; i < pcb[1] + 2; i++) 150 DPRINTF(("pcb[%2d] = %x\n", i, pcb[i])); 151 } 152 153 static int 154 egoutPCB(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t b) 155 { 156 int i; 157 158 for (i=0; i < 4000; i++) { 159 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) { 160 bus_space_write_1(iot, ioh, EG_COMMAND, b); 161 return 0; 162 } 163 delay(10); 164 } 165 DPRINTF(("egoutPCB failed\n")); 166 return 1; 167 } 168 169 static int 170 egreadPCBstat(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t statb) 171 { 172 int i; 173 174 for (i=0; i < 5000; i++) { 175 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 176 EG_PCB_STAT) != EG_PCB_NULL) 177 break; 178 delay(10); 179 } 180 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) == statb) 181 return 0; 182 return 1; 183 } 184 185 static int 186 egreadPCBready(bus_space_tag_t iot, bus_space_handle_t ioh) 187 { 188 int i; 189 190 for (i=0; i < 10000; i++) { 191 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) 192 return 0; 193 delay(5); 194 } 195 DPRINTF(("PCB read not ready\n")); 196 return 1; 197 } 198 199 static int 200 egwritePCB(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t *pcb) 201 { 202 int i; 203 u_int8_t len; 204 205 bus_space_write_1(iot, ioh, EG_CONTROL, 206 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 207 208 len = pcb[1] + 2; 209 for (i = 0; i < len; i++) 210 egoutPCB(iot, ioh, pcb[i]); 211 212 for (i=0; i < 4000; i++) { 213 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) 214 break; 215 delay(10); 216 } 217 218 bus_space_write_1(iot, ioh, EG_CONTROL, 219 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_DONE); 220 221 egoutPCB(iot, ioh, len); 222 223 if (egreadPCBstat(iot, ioh, EG_PCB_ACCEPT)) 224 return 1; 225 return 0; 226 } 227 228 static int 229 egreadPCB(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t *pcb) 230 { 231 int i; 232 233 bus_space_write_1(iot, ioh, EG_CONTROL, 234 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 235 236 memset(pcb, 0, EG_PCBLEN); 237 238 if (egreadPCBready(iot, ioh)) 239 return 1; 240 241 pcb[0] = bus_space_read_1(iot, ioh, EG_COMMAND); 242 243 if (egreadPCBready(iot, ioh)) 244 return 1; 245 246 pcb[1] = bus_space_read_1(iot, ioh, EG_COMMAND); 247 248 if (pcb[1] > 62) { 249 DPRINTF(("len %d too large\n", pcb[1])); 250 return 1; 251 } 252 253 for (i = 0; i < pcb[1]; i++) { 254 if (egreadPCBready(iot, ioh)) 255 return 1; 256 pcb[2+i] = bus_space_read_1(iot, ioh, EG_COMMAND); 257 } 258 if (egreadPCBready(iot, ioh)) 259 return 1; 260 if (egreadPCBstat(iot, ioh, EG_PCB_DONE)) 261 return 1; 262 if (bus_space_read_1(iot, ioh, EG_COMMAND) != pcb[1] + 2) { 263 return 1; 264 } 265 266 bus_space_write_1(iot, ioh, EG_CONTROL, 267 (bus_space_read_1(iot, ioh, EG_CONTROL) & 268 ~EG_PCB_STAT) | EG_PCB_ACCEPT); 269 270 return 0; 271 } 272 273 /* 274 * Real stuff 275 */ 276 277 int 278 egprobe(device_t parent, cfdata_t match, void *aux) 279 { 280 struct isa_attach_args *ia = aux; 281 bus_space_tag_t iot = ia->ia_iot; 282 bus_space_handle_t ioh; 283 int i, rval; 284 static u_int8_t pcb[EG_PCBLEN]; 285 286 rval = 0; 287 288 /* 289 * XXX This probe is slow. If there are no ISA expansion slots, 290 * then skip it. 291 */ 292 if (isa_get_slotcount() == 0) 293 return (0); 294 295 if (ia->ia_nio < 1) 296 return (0); 297 if (ia->ia_nirq < 1) 298 return (0); 299 300 if (ISA_DIRECT_CONFIG(ia)) 301 return (0); 302 303 /* Disallow wildcarded i/o address. */ 304 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 305 return (0); 306 307 /* Disallow wildcarded IRQ. */ 308 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 309 return (0); 310 311 if ((ia->ia_io[0].ir_addr & ~0x07f0) != 0) { 312 DPRINTF(("Weird iobase %x\n", ia->ia_io[0].ir_addr)); 313 return 0; 314 } 315 316 /* Map i/o space. */ 317 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 318 DPRINTF(("egprobe: can't map i/o space in probe\n")); 319 return 0; 320 } 321 322 /* hard reset card */ 323 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_RESET); 324 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 325 for (i = 0; i < 500; i++) { 326 delay(1000); 327 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 328 EG_PCB_STAT) == EG_PCB_NULL) 329 break; 330 } 331 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) { 332 DPRINTF(("egprobe: Reset failed\n")); 333 goto out; 334 } 335 pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 336 pcb[1] = 0; 337 if (egwritePCB(iot, ioh, pcb) != 0) 338 goto out; 339 340 if ((egreadPCB(iot, ioh, pcb) != 0) || 341 pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 342 pcb[1] != 0x0a) { 343 egprintpcb(pcb); 344 goto out; 345 } 346 347 ia->ia_nio = 1; 348 ia->ia_io[0].ir_size = 0x08; 349 350 ia->ia_nirq = 1; 351 352 ia->ia_niomem = 0; 353 ia->ia_ndrq = 0; 354 355 rval = 1; 356 357 out: 358 bus_space_unmap(iot, ioh, 0x08); 359 return rval; 360 } 361 362 void 363 egattach(device_t parent, device_t self, void *aux) 364 { 365 struct eg_softc *sc = device_private(self); 366 struct isa_attach_args *ia = aux; 367 bus_space_tag_t iot = ia->ia_iot; 368 bus_space_handle_t ioh; 369 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 370 u_int8_t myaddr[ETHER_ADDR_LEN]; 371 372 sc->sc_dev = self; 373 374 printf("\n"); 375 376 /* Map i/o space. */ 377 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 378 aprint_error_dev(self, "can't map i/o space\n"); 379 return; 380 } 381 382 sc->sc_iot = iot; 383 sc->sc_ioh = ioh; 384 385 sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 386 sc->eg_pcb[1] = 0; 387 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 388 aprint_error_dev(self, "error requesting adapter info\n"); 389 return; 390 } 391 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 392 egprintpcb(sc->eg_pcb); 393 aprint_error_dev(self, "error reading adapter info\n"); 394 return; 395 } 396 397 if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 398 sc->eg_pcb[1] != 0x0a) { 399 egprintpcb(sc->eg_pcb); 400 aprint_error_dev(self, "bogus adapter info\n"); 401 return; 402 } 403 404 sc->eg_rom_major = sc->eg_pcb[3]; 405 sc->eg_rom_minor = sc->eg_pcb[2]; 406 sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 407 408 egstop(sc); 409 410 sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ 411 sc->eg_pcb[1] = 0; 412 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 413 aprint_error_dev(self, "can't send Get Station Address\n"); 414 return; 415 } 416 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 417 aprint_error_dev(self, "can't read station address\n"); 418 egprintpcb(sc->eg_pcb); 419 return; 420 } 421 422 /* check Get station address response */ 423 if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { 424 aprint_error_dev(self, "card responded with garbage (1)\n"); 425 egprintpcb(sc->eg_pcb); 426 return; 427 } 428 memcpy(myaddr, &sc->eg_pcb[2], ETHER_ADDR_LEN); 429 430 printf("%s: ROM v%d.%02d %dk address %s\n", device_xname(self), 431 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 432 ether_sprintf(myaddr)); 433 434 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 435 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 436 printf("%s: can't send Set Station Address\n", device_xname(self)); 437 return; 438 } 439 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 440 aprint_error_dev(self, "can't read Set Station Address status\n"); 441 egprintpcb(sc->eg_pcb); 442 return; 443 } 444 if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || 445 sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { 446 aprint_error_dev(self, "card responded with garbage (2)\n"); 447 egprintpcb(sc->eg_pcb); 448 return; 449 } 450 451 /* Initialize ifnet structure. */ 452 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 453 ifp->if_softc = sc; 454 ifp->if_start = egstart; 455 ifp->if_ioctl = egioctl; 456 ifp->if_watchdog = egwatchdog; 457 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 458 IFQ_SET_READY(&ifp->if_snd); 459 460 /* Now we can attach the interface. */ 461 if_attach(ifp); 462 ether_ifattach(ifp, myaddr); 463 464 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 465 IST_EDGE, IPL_NET, egintr, sc); 466 467 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 468 RND_TYPE_NET, RND_FLAG_DEFAULT); 469 } 470 471 void 472 eginit(struct eg_softc *sc) 473 { 474 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 475 bus_space_tag_t iot = sc->sc_iot; 476 bus_space_handle_t ioh = sc->sc_ioh; 477 478 /* soft reset the board */ 479 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_FLSH); 480 delay(100); 481 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_ATTN); 482 delay(100); 483 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 484 delay(200); 485 486 sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ 487 sc->eg_pcb[1] = 2; 488 sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ 489 sc->eg_pcb[3] = 0; 490 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) 491 aprint_error_dev(sc->sc_dev, "can't send Configure 82586\n"); 492 493 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 494 aprint_error_dev(sc->sc_dev, "can't read Configure 82586 status\n"); 495 egprintpcb(sc->eg_pcb); 496 } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) 497 aprint_error_dev(sc->sc_dev, "configure card command failed\n"); 498 499 if (sc->eg_inbuf == NULL) { 500 sc->eg_inbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 501 if (sc->eg_inbuf == NULL) { 502 aprint_error_dev(sc->sc_dev, "can't allocate inbuf\n"); 503 panic("eginit"); 504 } 505 } 506 sc->eg_incount = 0; 507 508 if (sc->eg_outbuf == NULL) { 509 sc->eg_outbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); 510 if (sc->eg_outbuf == NULL) { 511 aprint_error_dev(sc->sc_dev, "can't allocate outbuf\n"); 512 panic("eginit"); 513 } 514 } 515 516 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_CMDE); 517 518 sc->eg_incount = 0; 519 egrecv(sc); 520 521 /* Interface is now `running', with no output active. */ 522 ifp->if_flags |= IFF_RUNNING; 523 ifp->if_flags &= ~IFF_OACTIVE; 524 525 /* Attempt to start output, if any. */ 526 egstart(ifp); 527 } 528 529 void 530 egrecv(struct eg_softc *sc) 531 { 532 533 while (sc->eg_incount < EG_INLEN) { 534 sc->eg_pcb[0] = EG_CMD_RECVPACKET; 535 sc->eg_pcb[1] = 0x08; 536 sc->eg_pcb[2] = 0; /* address not used.. we send zero */ 537 sc->eg_pcb[3] = 0; 538 sc->eg_pcb[4] = 0; 539 sc->eg_pcb[5] = 0; 540 sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ 541 sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; 542 sc->eg_pcb[8] = 0; /* timeout, 0 == none */ 543 sc->eg_pcb[9] = 0; 544 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 545 break; 546 sc->eg_incount++; 547 } 548 } 549 550 void 551 egstart(struct ifnet *ifp) 552 { 553 struct eg_softc *sc = ifp->if_softc; 554 bus_space_tag_t iot = sc->sc_iot; 555 bus_space_handle_t ioh = sc->sc_ioh; 556 struct mbuf *m0, *m; 557 char *buffer; 558 int len; 559 u_int16_t *ptr; 560 561 /* Don't transmit if interface is busy or not running */ 562 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 563 return; 564 565 loop: 566 /* Dequeue the next datagram. */ 567 IFQ_DEQUEUE(&ifp->if_snd, m0); 568 if (m0 == 0) 569 return; 570 571 ifp->if_flags |= IFF_OACTIVE; 572 573 /* We need to use m->m_pkthdr.len, so require the header */ 574 if ((m0->m_flags & M_PKTHDR) == 0) { 575 aprint_error_dev(sc->sc_dev, "no header mbuf\n"); 576 panic("egstart"); 577 } 578 len = max(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN); 579 580 bpf_mtap(ifp, m0); 581 582 sc->eg_pcb[0] = EG_CMD_SENDPACKET; 583 sc->eg_pcb[1] = 0x06; 584 sc->eg_pcb[2] = 0; /* address not used, we send zero */ 585 sc->eg_pcb[3] = 0; 586 sc->eg_pcb[4] = 0; 587 sc->eg_pcb[5] = 0; 588 sc->eg_pcb[6] = len; /* length of packet */ 589 sc->eg_pcb[7] = len >> 8; 590 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 591 aprint_error_dev(sc->sc_dev, "can't send Send Packet command\n"); 592 ifp->if_oerrors++; 593 ifp->if_flags &= ~IFF_OACTIVE; 594 m_freem(m0); 595 goto loop; 596 } 597 598 buffer = sc->eg_outbuf; 599 for (m = m0; m != 0; m = m->m_next) { 600 memcpy(buffer, mtod(m, void *), m->m_len); 601 buffer += m->m_len; 602 } 603 if (len > m0->m_pkthdr.len) 604 memset(buffer, 0, len - m0->m_pkthdr.len); 605 606 /* set direction bit: host -> adapter */ 607 bus_space_write_1(iot, ioh, EG_CONTROL, 608 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 609 610 for (ptr = (u_int16_t *) sc->eg_outbuf; len > 0; len -= 2) { 611 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 612 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 613 ; /* XXX need timeout here */ 614 } 615 616 m_freem(m0); 617 } 618 619 int 620 egintr(void *arg) 621 { 622 struct eg_softc *sc = arg; 623 bus_space_tag_t iot = sc->sc_iot; 624 bus_space_handle_t ioh = sc->sc_ioh; 625 int i, len, serviced; 626 u_int16_t *ptr; 627 628 serviced = 0; 629 630 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 631 egreadPCB(iot, ioh, sc->eg_pcb); 632 switch (sc->eg_pcb[0]) { 633 case EG_RSP_RECVPACKET: 634 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 635 636 /* Set direction bit : Adapter -> host */ 637 bus_space_write_1(iot, ioh, EG_CONTROL, 638 bus_space_read_1(iot, ioh, EG_CONTROL) | EG_CTL_DIR); 639 640 for (ptr = (u_int16_t *) sc->eg_inbuf; 641 len > 0; len -= 2) { 642 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 643 EG_STAT_HRDY)) 644 ; 645 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 646 } 647 648 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 649 egread(sc, sc->eg_inbuf, len); 650 651 sc->eg_incount--; 652 egrecv(sc); 653 serviced = 1; 654 break; 655 656 case EG_RSP_SENDPACKET: 657 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 658 DPRINTF(("%s: packet dropped\n", 659 device_xname(sc->sc_dev))); 660 sc->sc_ethercom.ec_if.if_oerrors++; 661 } else 662 sc->sc_ethercom.ec_if.if_opackets++; 663 sc->sc_ethercom.ec_if.if_collisions += 664 sc->eg_pcb[8] & 0xf; 665 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 666 egstart(&sc->sc_ethercom.ec_if); 667 serviced = 1; 668 break; 669 670 /* XXX byte-order and type-size bugs here... */ 671 case EG_RSP_GETSTATS: 672 DPRINTF(("%s: Card Statistics\n", 673 device_xname(sc->sc_dev))); 674 memcpy(&i, &sc->eg_pcb[2], sizeof(i)); 675 DPRINTF(("Receive Packets %d\n", i)); 676 memcpy(&i, &sc->eg_pcb[6], sizeof(i)); 677 DPRINTF(("Transmit Packets %d\n", i)); 678 DPRINTF(("CRC errors %d\n", 679 *(short *) &sc->eg_pcb[10])); 680 DPRINTF(("alignment errors %d\n", 681 *(short *) &sc->eg_pcb[12])); 682 DPRINTF(("no resources errors %d\n", 683 *(short *) &sc->eg_pcb[14])); 684 DPRINTF(("overrun errors %d\n", 685 *(short *) &sc->eg_pcb[16])); 686 serviced = 1; 687 break; 688 689 default: 690 printf("%s: egintr: Unknown response %x??\n", 691 device_xname(sc->sc_dev), sc->eg_pcb[0]); 692 egprintpcb(sc->eg_pcb); 693 break; 694 } 695 696 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 697 } 698 699 return serviced; 700 } 701 702 /* 703 * Pass a packet up to the higher levels. 704 */ 705 void 706 egread(struct eg_softc *sc, void *buf, int len) 707 { 708 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 709 struct mbuf *m; 710 711 if (len <= sizeof(struct ether_header) || 712 len > ETHER_MAX_LEN) { 713 aprint_error_dev(sc->sc_dev, "invalid packet size %d; dropping\n", len); 714 ifp->if_ierrors++; 715 return; 716 } 717 718 /* Pull packet off interface. */ 719 m = egget(sc, buf, len); 720 if (m == 0) { 721 ifp->if_ierrors++; 722 return; 723 } 724 725 ifp->if_ipackets++; 726 727 /* 728 * Check if there's a BPF listener on this interface. 729 * If so, hand off the raw packet to BPF. 730 */ 731 bpf_mtap(ifp, m); 732 733 (*ifp->if_input)(ifp, m); 734 } 735 736 /* 737 * convert buf into mbufs 738 */ 739 struct mbuf * 740 egget(struct eg_softc *sc, void *buf, int totlen) 741 { 742 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 743 struct mbuf *m, *m0, *newm; 744 int len; 745 746 MGETHDR(m0, M_DONTWAIT, MT_DATA); 747 if (m0 == 0) 748 return (0); 749 m0->m_pkthdr.rcvif = ifp; 750 m0->m_pkthdr.len = totlen; 751 len = MHLEN; 752 m = m0; 753 754 while (totlen > 0) { 755 if (totlen >= MINCLSIZE) { 756 MCLGET(m, M_DONTWAIT); 757 if ((m->m_flags & M_EXT) == 0) 758 goto bad; 759 len = MCLBYTES; 760 } 761 762 m->m_len = len = min(totlen, len); 763 memcpy(mtod(m, void *), buf, len); 764 buf = (char *)buf + len; 765 766 totlen -= len; 767 if (totlen > 0) { 768 MGET(newm, M_DONTWAIT, MT_DATA); 769 if (newm == 0) 770 goto bad; 771 len = MLEN; 772 m = m->m_next = newm; 773 } 774 } 775 776 return (m0); 777 778 bad: 779 m_freem(m0); 780 return (0); 781 } 782 783 int 784 egioctl(struct ifnet *ifp, unsigned long cmd, void *data) 785 { 786 struct eg_softc *sc = ifp->if_softc; 787 struct ifaddr *ifa = (struct ifaddr *)data; 788 int s, error = 0; 789 790 s = splnet(); 791 792 switch (cmd) { 793 794 case SIOCINITIFADDR: 795 ifp->if_flags |= IFF_UP; 796 797 eginit(sc); 798 switch (ifa->ifa_addr->sa_family) { 799 #ifdef INET 800 case AF_INET: 801 arp_ifinit(ifp, ifa); 802 break; 803 #endif 804 default: 805 break; 806 } 807 break; 808 809 case SIOCSIFFLAGS: 810 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 811 break; 812 /* XXX re-use ether_ioctl() */ 813 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 814 case IFF_RUNNING: 815 /* 816 * If interface is marked down and it is running, then 817 * stop it. 818 */ 819 egstop(sc); 820 ifp->if_flags &= ~IFF_RUNNING; 821 break; 822 case IFF_UP: 823 /* 824 * If interface is marked up and it is stopped, then 825 * start it. 826 */ 827 eginit(sc); 828 break; 829 default: 830 sc->eg_pcb[0] = EG_CMD_GETSTATS; 831 sc->eg_pcb[1] = 0; 832 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) { 833 DPRINTF(("write error\n")); 834 } 835 /* 836 * XXX deal with flags changes: 837 * IFF_MULTICAST, IFF_PROMISC, 838 * IFF_LINK0, IFF_LINK1, 839 */ 840 break; 841 } 842 break; 843 844 default: 845 error = ether_ioctl(ifp, cmd, data); 846 break; 847 } 848 849 splx(s); 850 return error; 851 } 852 853 void 854 egreset(struct eg_softc *sc) 855 { 856 int s; 857 858 DPRINTF(("%s: egreset()\n", device_xname(sc->sc_dev))); 859 s = splnet(); 860 egstop(sc); 861 eginit(sc); 862 splx(s); 863 } 864 865 void 866 egwatchdog(struct ifnet *ifp) 867 { 868 struct eg_softc *sc = ifp->if_softc; 869 870 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 871 sc->sc_ethercom.ec_if.if_oerrors++; 872 873 egreset(sc); 874 } 875 876 void 877 egstop(struct eg_softc *sc) 878 { 879 880 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 881 } 882
Indexes created Thu Oct 02 10:09:58 GMT 2025