if_eg.c revision 1.102
1 /* $NetBSD: if_eg.c,v 1.102 2022/09/17 16:54:01 thorpej 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 1.102 2022/09/17 16:54:01 thorpej Exp $"); 44 45 #include "opt_inet.h" 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kmem.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 #include <sys/rndsource.h> 58 59 #include <net/if.h> 60 #include <net/if_dl.h> 61 #include <net/if_types.h> 62 #include <net/bpf.h> 63 64 #include <net/if_ether.h> 65 66 #ifdef INET 67 #include <netinet/in.h> 68 #include <netinet/in_systm.h> 69 #include <netinet/in_var.h> 70 #include <netinet/ip.h> 71 #include <netinet/if_inarp.h> 72 #endif 73 74 #include <sys/cpu.h> 75 #include <sys/intr.h> 76 #include <sys/bus.h> 77 78 #include <dev/isa/isavar.h> 79 #include <dev/isa/if_egreg.h> 80 #include <dev/isa/elink.h> 81 82 /* for debugging convenience */ 83 #ifdef EGDEBUG 84 #define DPRINTF(x) printf x 85 #else 86 #define DPRINTF(x) 87 #endif 88 89 #define EG_INLEN 10 90 #define EG_BUFLEN 0x0670 91 92 #define EG_PCBLEN 64 93 94 /* 95 * Ethernet software status per interface. 96 */ 97 struct eg_softc { 98 device_t sc_dev; 99 void *sc_ih; 100 struct ethercom sc_ethercom; /* Ethernet common part */ 101 bus_space_tag_t sc_iot; /* bus space identifier */ 102 bus_space_handle_t sc_ioh; /* i/o handle */ 103 uint8_t eg_rom_major; /* Cards ROM version (major number) */ 104 uint8_t eg_rom_minor; /* Cards ROM version (minor number) */ 105 short eg_ram; /* Amount of RAM on the card */ 106 uint8_t eg_pcb[EG_PCBLEN]; /* Primary Command Block buffer */ 107 uint8_t eg_incount; /* Number of buffers currently used */ 108 bool eg_txbusy; /* transmitter is busy */ 109 void * eg_inbuf; /* Incoming packet buffer */ 110 void * eg_outbuf; /* Outgoing packet buffer */ 111 112 krndsource_t rnd_source; 113 }; 114 115 static int egprobe(device_t, cfdata_t, void *); 116 static void egattach(device_t, device_t, void *); 117 118 CFATTACH_DECL_NEW(eg, sizeof(struct eg_softc), 119 egprobe, egattach, NULL, NULL); 120 121 static int egintr(void *); 122 static void eginit(struct eg_softc *); 123 static int egioctl(struct ifnet *, u_long, void *); 124 static void egrecv(struct eg_softc *); 125 static void egstart(struct ifnet *); 126 static void egwatchdog(struct ifnet *); 127 static void egreset(struct eg_softc *); 128 static void egread(struct eg_softc *, void *, int); 129 static struct mbuf *egget(struct eg_softc *, void *, int); 130 static void egstop(struct eg_softc *); 131 132 static inline void egprintpcb(uint8_t *); 133 static int egoutPCB(bus_space_tag_t, bus_space_handle_t, uint8_t); 134 static int egreadPCBstat(bus_space_tag_t, bus_space_handle_t, uint8_t); 135 static int egreadPCBready(bus_space_tag_t, bus_space_handle_t); 136 static int egwritePCB(bus_space_tag_t, bus_space_handle_t, uint8_t *); 137 static int egreadPCB(bus_space_tag_t, bus_space_handle_t, uint8_t *); 138 139 /* 140 * Support stuff 141 */ 142 143 static inline void 144 egprintpcb(uint8_t *pcb) 145 { 146 int i; 147 148 for (i = 0; i < pcb[1] + 2; i++) 149 DPRINTF(("pcb[%2d] = %x\n", i, pcb[i])); 150 } 151 152 static int 153 egoutPCB(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t b) 154 { 155 int i; 156 157 for (i=0; i < 4000; i++) { 158 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) { 159 bus_space_write_1(iot, ioh, EG_COMMAND, b); 160 return 0; 161 } 162 delay(10); 163 } 164 DPRINTF(("egoutPCB failed\n")); 165 return 1; 166 } 167 168 static int 169 egreadPCBstat(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t statb) 170 { 171 int i; 172 173 for (i=0; i < 5000; i++) { 174 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 175 EG_PCB_STAT) != EG_PCB_NULL) 176 break; 177 delay(10); 178 } 179 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) == statb) 180 return 0; 181 return 1; 182 } 183 184 static int 185 egreadPCBready(bus_space_tag_t iot, bus_space_handle_t ioh) 186 { 187 int i; 188 189 for (i=0; i < 10000; i++) { 190 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) 191 return 0; 192 delay(5); 193 } 194 DPRINTF(("PCB read not ready\n")); 195 return 1; 196 } 197 198 static int 199 egwritePCB(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t *pcb) 200 { 201 int i; 202 uint8_t len; 203 204 bus_space_write_1(iot, ioh, EG_CONTROL, 205 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 206 207 len = pcb[1] + 2; 208 for (i = 0; i < len; i++) 209 egoutPCB(iot, ioh, pcb[i]); 210 211 for (i=0; i < 4000; i++) { 212 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) 213 break; 214 delay(10); 215 } 216 217 bus_space_write_1(iot, ioh, EG_CONTROL, 218 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_DONE); 219 220 egoutPCB(iot, ioh, len); 221 222 if (egreadPCBstat(iot, ioh, EG_PCB_ACCEPT)) 223 return 1; 224 return 0; 225 } 226 227 static int 228 egreadPCB(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t *pcb) 229 { 230 int i; 231 232 bus_space_write_1(iot, ioh, EG_CONTROL, 233 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 234 235 memset(pcb, 0, EG_PCBLEN); 236 237 if (egreadPCBready(iot, ioh)) 238 return 1; 239 240 pcb[0] = bus_space_read_1(iot, ioh, EG_COMMAND); 241 242 if (egreadPCBready(iot, ioh)) 243 return 1; 244 245 pcb[1] = bus_space_read_1(iot, ioh, EG_COMMAND); 246 247 if (pcb[1] > 62) { 248 DPRINTF(("len %d too large\n", pcb[1])); 249 return 1; 250 } 251 252 for (i = 0; i < pcb[1]; i++) { 253 if (egreadPCBready(iot, ioh)) 254 return 1; 255 pcb[2+i] = bus_space_read_1(iot, ioh, EG_COMMAND); 256 } 257 if (egreadPCBready(iot, ioh)) 258 return 1; 259 if (egreadPCBstat(iot, ioh, EG_PCB_DONE)) 260 return 1; 261 if (bus_space_read_1(iot, ioh, EG_COMMAND) != pcb[1] + 2) { 262 return 1; 263 } 264 265 bus_space_write_1(iot, ioh, EG_CONTROL, 266 (bus_space_read_1(iot, ioh, EG_CONTROL) & 267 ~EG_PCB_STAT) | EG_PCB_ACCEPT); 268 269 return 0; 270 } 271 272 /* 273 * Real stuff 274 */ 275 276 static int 277 egprobe(device_t parent, cfdata_t match, void *aux) 278 { 279 struct isa_attach_args *ia = aux; 280 bus_space_tag_t iot = ia->ia_iot; 281 bus_space_handle_t ioh; 282 int i, rval; 283 static uint8_t pcb[EG_PCBLEN]; 284 285 rval = 0; 286 287 /* 288 * XXX This probe is slow. If there are no ISA expansion slots, 289 * then skip it. 290 */ 291 if (isa_get_slotcount() == 0) 292 return (0); 293 294 if (ia->ia_nio < 1) 295 return (0); 296 if (ia->ia_nirq < 1) 297 return (0); 298 299 if (ISA_DIRECT_CONFIG(ia)) 300 return (0); 301 302 /* Disallow wildcarded i/o address. */ 303 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 304 return (0); 305 306 /* Disallow wildcarded IRQ. */ 307 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 308 return (0); 309 310 if ((ia->ia_io[0].ir_addr & ~0x07f0) != 0) { 311 DPRINTF(("Weird iobase %x\n", ia->ia_io[0].ir_addr)); 312 return 0; 313 } 314 315 /* Map i/o space. */ 316 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 317 DPRINTF(("egprobe: can't map i/o space in probe\n")); 318 return 0; 319 } 320 321 /* hard reset card */ 322 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_RESET); 323 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 324 for (i = 0; i < 500; i++) { 325 delay(1000); 326 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 327 EG_PCB_STAT) == EG_PCB_NULL) 328 break; 329 } 330 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) { 331 DPRINTF(("egprobe: Reset failed\n")); 332 goto out; 333 } 334 pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 335 pcb[1] = 0; 336 if (egwritePCB(iot, ioh, pcb) != 0) 337 goto out; 338 339 if ((egreadPCB(iot, ioh, pcb) != 0) || 340 pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 341 pcb[1] != 0x0a) { 342 egprintpcb(pcb); 343 goto out; 344 } 345 346 ia->ia_nio = 1; 347 ia->ia_io[0].ir_size = 0x08; 348 349 ia->ia_nirq = 1; 350 351 ia->ia_niomem = 0; 352 ia->ia_ndrq = 0; 353 354 rval = 1; 355 356 out: 357 bus_space_unmap(iot, ioh, 0x08); 358 return rval; 359 } 360 361 static void 362 egattach(device_t parent, device_t self, void *aux) 363 { 364 struct eg_softc *sc = device_private(self); 365 struct isa_attach_args *ia = aux; 366 bus_space_tag_t iot = ia->ia_iot; 367 bus_space_handle_t ioh; 368 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 369 uint8_t myaddr[ETHER_ADDR_LEN]; 370 371 sc->sc_dev = self; 372 373 printf("\n"); 374 375 /* Map i/o space. */ 376 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 377 aprint_error_dev(self, "can't map i/o space\n"); 378 return; 379 } 380 381 sc->sc_iot = iot; 382 sc->sc_ioh = ioh; 383 384 sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 385 sc->eg_pcb[1] = 0; 386 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 387 aprint_error_dev(self, "error requesting adapter info\n"); 388 return; 389 } 390 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 391 egprintpcb(sc->eg_pcb); 392 aprint_error_dev(self, "error reading adapter info\n"); 393 return; 394 } 395 396 if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 397 sc->eg_pcb[1] != 0x0a) { 398 egprintpcb(sc->eg_pcb); 399 aprint_error_dev(self, "bogus adapter info\n"); 400 return; 401 } 402 403 sc->eg_rom_major = sc->eg_pcb[3]; 404 sc->eg_rom_minor = sc->eg_pcb[2]; 405 sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 406 407 egstop(sc); 408 409 sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ 410 sc->eg_pcb[1] = 0; 411 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 412 aprint_error_dev(self, "can't send Get Station Address\n"); 413 return; 414 } 415 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 416 aprint_error_dev(self, "can't read station address\n"); 417 egprintpcb(sc->eg_pcb); 418 return; 419 } 420 421 /* check Get station address response */ 422 if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { 423 aprint_error_dev(self, "card responded with garbage (1)\n"); 424 egprintpcb(sc->eg_pcb); 425 return; 426 } 427 memcpy(myaddr, &sc->eg_pcb[2], ETHER_ADDR_LEN); 428 429 aprint_normal_dev(self, "ROM v%d.%02d %dk address %s\n", 430 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 431 ether_sprintf(myaddr)); 432 433 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 434 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 435 aprint_error_dev(self, "can't send Set Station Address\n"); 436 return; 437 } 438 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 439 aprint_error_dev(self, 440 "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; 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 static 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, 495 "can't read Configure 82586 status\n"); 496 egprintpcb(sc->eg_pcb); 497 } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) 498 aprint_error_dev(sc->sc_dev,"configure card command failed\n"); 499 500 if (sc->eg_inbuf == NULL) { 501 sc->eg_inbuf = kmem_alloc(EG_BUFLEN, KM_NOSLEEP); 502 if (sc->eg_inbuf == NULL) { 503 aprint_error_dev(sc->sc_dev, "can't allocate inbuf\n"); 504 panic("eginit"); 505 } 506 } 507 sc->eg_incount = 0; 508 509 if (sc->eg_outbuf == NULL) { 510 sc->eg_outbuf = kmem_alloc(EG_BUFLEN, KM_NOSLEEP); 511 if (sc->eg_outbuf == NULL) { 512 aprint_error_dev(sc->sc_dev,"can't allocate outbuf\n"); 513 panic("eginit"); 514 } 515 } 516 517 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_CMDE); 518 519 sc->eg_incount = 0; 520 egrecv(sc); 521 522 /* Interface is now `running', with no output active. */ 523 ifp->if_flags |= IFF_RUNNING; 524 sc->eg_txbusy = false; 525 526 /* Attempt to start output, if any. */ 527 egstart(ifp); 528 } 529 530 static void 531 egrecv(struct eg_softc *sc) 532 { 533 534 while (sc->eg_incount < EG_INLEN) { 535 sc->eg_pcb[0] = EG_CMD_RECVPACKET; 536 sc->eg_pcb[1] = 0x08; 537 sc->eg_pcb[2] = 0; /* address not used.. we send zero */ 538 sc->eg_pcb[3] = 0; 539 sc->eg_pcb[4] = 0; 540 sc->eg_pcb[5] = 0; 541 sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ 542 sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; 543 sc->eg_pcb[8] = 0; /* timeout, 0 == none */ 544 sc->eg_pcb[9] = 0; 545 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) 546 break; 547 sc->eg_incount++; 548 } 549 } 550 551 static void 552 egstart(struct ifnet *ifp) 553 { 554 struct eg_softc *sc = ifp->if_softc; 555 bus_space_tag_t iot = sc->sc_iot; 556 bus_space_handle_t ioh = sc->sc_ioh; 557 struct mbuf *m0, *m; 558 char *buffer; 559 int len; 560 uint16_t *ptr; 561 562 /* Don't transmit if interface is busy or not running */ 563 if ((ifp->if_flags & IFF_RUNNING) == 0) 564 return; 565 566 if (sc->eg_txbusy) 567 return; 568 569 loop: 570 /* Dequeue the next datagram. */ 571 IFQ_DEQUEUE(&ifp->if_snd, m0); 572 if (m0 == 0) 573 return; 574 575 sc->eg_txbusy = true; 576 577 /* We need to use m->m_pkthdr.len, so require the header */ 578 KASSERT(m0->m_flags & M_PKTHDR); 579 len = uimax(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN); 580 581 bpf_mtap(ifp, m0, BPF_D_OUT); 582 583 sc->eg_pcb[0] = EG_CMD_SENDPACKET; 584 sc->eg_pcb[1] = 0x06; 585 sc->eg_pcb[2] = 0; /* address not used, we send zero */ 586 sc->eg_pcb[3] = 0; 587 sc->eg_pcb[4] = 0; 588 sc->eg_pcb[5] = 0; 589 sc->eg_pcb[6] = len; /* length of packet */ 590 sc->eg_pcb[7] = len >> 8; 591 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 592 aprint_error_dev(sc->sc_dev, 593 "can't send Send Packet command\n"); 594 if_statinc(ifp, if_oerrors); 595 sc->eg_txbusy = false; 596 m_freem(m0); 597 goto loop; 598 } 599 600 buffer = sc->eg_outbuf; 601 for (m = m0; m != 0; m = m->m_next) { 602 memcpy(buffer, mtod(m, void *), m->m_len); 603 buffer += m->m_len; 604 } 605 if (len > m0->m_pkthdr.len) 606 memset(buffer, 0, len - m0->m_pkthdr.len); 607 608 /* set direction bit: host -> adapter */ 609 bus_space_write_1(iot, ioh, EG_CONTROL, 610 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 611 612 for (ptr = (uint16_t *) sc->eg_outbuf; len > 0; len -= 2) { 613 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 614 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 615 ; /* XXX need timeout here */ 616 } 617 618 m_freem(m0); 619 } 620 621 static int 622 egintr(void *arg) 623 { 624 struct eg_softc *sc = arg; 625 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 626 bus_space_tag_t iot = sc->sc_iot; 627 bus_space_handle_t ioh = sc->sc_ioh; 628 int i, len, serviced; 629 uint16_t *ptr; 630 631 serviced = 0; 632 633 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 634 egreadPCB(iot, ioh, sc->eg_pcb); 635 switch (sc->eg_pcb[0]) { 636 case EG_RSP_RECVPACKET: 637 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 638 639 /* Set direction bit : Adapter -> host */ 640 bus_space_write_1(iot, ioh, EG_CONTROL, 641 bus_space_read_1(iot, ioh, EG_CONTROL) | EG_CTL_DIR); 642 643 for (ptr = (uint16_t *) sc->eg_inbuf; 644 len > 0; len -= 2) { 645 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 646 EG_STAT_HRDY)) 647 ; 648 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 649 } 650 651 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 652 egread(sc, sc->eg_inbuf, len); 653 654 sc->eg_incount--; 655 egrecv(sc); 656 serviced = 1; 657 break; 658 659 case EG_RSP_SENDPACKET: 660 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 661 DPRINTF(("%s: packet dropped\n", 662 device_xname(sc->sc_dev))); 663 if_statinc(ifp, if_oerrors); 664 } else 665 if_statinc(ifp, if_opackets); 666 if (sc->eg_pcb[8] & 0xf) 667 if_statadd(ifp, if_collisions, 668 sc->eg_pcb[8] & 0xf); 669 sc->eg_txbusy = false; 670 egstart(&sc->sc_ethercom.ec_if); 671 serviced = 1; 672 break; 673 674 /* XXX byte-order and type-size bugs here... */ 675 case EG_RSP_GETSTATS: 676 DPRINTF(("%s: Card Statistics\n", 677 device_xname(sc->sc_dev))); 678 memcpy(&i, &sc->eg_pcb[2], sizeof(i)); 679 DPRINTF(("Receive Packets %d\n", i)); 680 memcpy(&i, &sc->eg_pcb[6], sizeof(i)); 681 DPRINTF(("Transmit Packets %d\n", i)); 682 DPRINTF(("CRC errors %d\n", 683 *(short *) &sc->eg_pcb[10])); 684 DPRINTF(("alignment errors %d\n", 685 *(short *) &sc->eg_pcb[12])); 686 DPRINTF(("no resources errors %d\n", 687 *(short *) &sc->eg_pcb[14])); 688 DPRINTF(("overrun errors %d\n", 689 *(short *) &sc->eg_pcb[16])); 690 serviced = 1; 691 break; 692 693 default: 694 printf("%s: egintr: Unknown response %x??\n", 695 device_xname(sc->sc_dev), sc->eg_pcb[0]); 696 egprintpcb(sc->eg_pcb); 697 break; 698 } 699 700 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 701 } 702 703 return serviced; 704 } 705 706 /* 707 * Pass a packet up to the higher levels. 708 */ 709 static void 710 egread(struct eg_softc *sc, void *buf, int len) 711 { 712 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 713 struct mbuf *m; 714 715 if (len <= sizeof(struct ether_header) || 716 len > ETHER_MAX_LEN) { 717 aprint_error_dev(sc->sc_dev, 718 "invalid packet size %d; dropping\n", len); 719 if_statinc(ifp, if_ierrors); 720 return; 721 } 722 723 /* Pull packet off interface. */ 724 m = egget(sc, buf, len); 725 if (m == 0) { 726 if_statinc(ifp, if_ierrors); 727 return; 728 } 729 730 if_percpuq_enqueue(ifp->if_percpuq, m); 731 } 732 733 /* 734 * convert buf into mbufs 735 */ 736 static struct mbuf * 737 egget(struct eg_softc *sc, void *buf, int totlen) 738 { 739 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 740 struct mbuf *m, *m0, *newm; 741 int len; 742 743 MGETHDR(m0, M_DONTWAIT, MT_DATA); 744 if (m0 == 0) 745 return (0); 746 m_set_rcvif(m0, ifp); 747 m0->m_pkthdr.len = totlen; 748 len = MHLEN; 749 m = m0; 750 751 while (totlen > 0) { 752 if (totlen >= MINCLSIZE) { 753 MCLGET(m, M_DONTWAIT); 754 if ((m->m_flags & M_EXT) == 0) 755 goto bad; 756 len = MCLBYTES; 757 } 758 759 m->m_len = len = uimin(totlen, len); 760 memcpy(mtod(m, void *), buf, len); 761 buf = (char *)buf + len; 762 763 totlen -= len; 764 if (totlen > 0) { 765 MGET(newm, M_DONTWAIT, MT_DATA); 766 if (newm == 0) 767 goto bad; 768 len = MLEN; 769 m = m->m_next = newm; 770 } 771 } 772 773 return (m0); 774 775 bad: 776 m_freem(m0); 777 return (0); 778 } 779 780 static int 781 egioctl(struct ifnet *ifp, unsigned long cmd, void *data) 782 { 783 struct eg_softc *sc = ifp->if_softc; 784 struct ifaddr *ifa = (struct ifaddr *)data; 785 int s, error = 0; 786 787 s = splnet(); 788 789 switch (cmd) { 790 791 case SIOCINITIFADDR: 792 ifp->if_flags |= IFF_UP; 793 794 eginit(sc); 795 switch (ifa->ifa_addr->sa_family) { 796 #ifdef INET 797 case AF_INET: 798 arp_ifinit(ifp, ifa); 799 break; 800 #endif 801 default: 802 break; 803 } 804 break; 805 806 case SIOCSIFFLAGS: 807 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 808 break; 809 /* XXX re-use ether_ioctl() */ 810 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 811 case IFF_RUNNING: 812 /* 813 * If interface is marked down and it is running, then 814 * stop it. 815 */ 816 egstop(sc); 817 ifp->if_flags &= ~IFF_RUNNING; 818 break; 819 case IFF_UP: 820 /* 821 * If interface is marked up and it is stopped, then 822 * start it. 823 */ 824 eginit(sc); 825 break; 826 default: 827 sc->eg_pcb[0] = EG_CMD_GETSTATS; 828 sc->eg_pcb[1] = 0; 829 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) { 830 DPRINTF(("write error\n")); 831 } 832 /* 833 * XXX deal with flags changes: 834 * IFF_MULTICAST, IFF_PROMISC, 835 * IFF_LINK0, IFF_LINK1, 836 */ 837 break; 838 } 839 break; 840 841 default: 842 error = ether_ioctl(ifp, cmd, data); 843 break; 844 } 845 846 splx(s); 847 return error; 848 } 849 850 static void 851 egreset(struct eg_softc *sc) 852 { 853 int s; 854 855 DPRINTF(("%s: egreset()\n", device_xname(sc->sc_dev))); 856 s = splnet(); 857 egstop(sc); 858 eginit(sc); 859 splx(s); 860 } 861 862 static void 863 egwatchdog(struct ifnet *ifp) 864 { 865 struct eg_softc *sc = ifp->if_softc; 866 867 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 868 if_statinc(ifp, if_oerrors); 869 870 egreset(sc); 871 } 872 873 static void 874 egstop(struct eg_softc *sc) 875 { 876 877 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 878 } 879
Indexes created Thu Oct 02 14:10:14 GMT 2025