if_eg.c revision 1.100
1 /* $NetBSD: if_eg.c,v 1.100 2022/09/17 16:48:33 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 1.100 2022/09/17 16:48:33 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 void * eg_inbuf; /* Incoming packet buffer */ 109 void * eg_outbuf; /* Outgoing packet buffer */ 110 111 krndsource_t rnd_source; 112 }; 113 114 static int egprobe(device_t, cfdata_t, void *); 115 static void egattach(device_t, device_t, void *); 116 117 CFATTACH_DECL_NEW(eg, sizeof(struct eg_softc), 118 egprobe, egattach, NULL, NULL); 119 120 static int egintr(void *); 121 static void eginit(struct eg_softc *); 122 static int egioctl(struct ifnet *, u_long, void *); 123 static void egrecv(struct eg_softc *); 124 static void egstart(struct ifnet *); 125 static void egwatchdog(struct ifnet *); 126 static void egreset(struct eg_softc *); 127 static void egread(struct eg_softc *, void *, int); 128 static struct mbuf *egget(struct eg_softc *, void *, int); 129 static void egstop(struct eg_softc *); 130 131 static inline void egprintpcb(uint8_t *); 132 static int egoutPCB(bus_space_tag_t, bus_space_handle_t, uint8_t); 133 static int egreadPCBstat(bus_space_tag_t, bus_space_handle_t, uint8_t); 134 static int egreadPCBready(bus_space_tag_t, bus_space_handle_t); 135 static int egwritePCB(bus_space_tag_t, bus_space_handle_t, uint8_t *); 136 static int egreadPCB(bus_space_tag_t, bus_space_handle_t, uint8_t *); 137 138 /* 139 * Support stuff 140 */ 141 142 static inline void 143 egprintpcb(uint8_t *pcb) 144 { 145 int i; 146 147 for (i = 0; i < pcb[1] + 2; i++) 148 DPRINTF(("pcb[%2d] = %x\n", i, pcb[i])); 149 } 150 151 static int 152 egoutPCB(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t b) 153 { 154 int i; 155 156 for (i=0; i < 4000; i++) { 157 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) { 158 bus_space_write_1(iot, ioh, EG_COMMAND, b); 159 return 0; 160 } 161 delay(10); 162 } 163 DPRINTF(("egoutPCB failed\n")); 164 return 1; 165 } 166 167 static int 168 egreadPCBstat(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t statb) 169 { 170 int i; 171 172 for (i=0; i < 5000; i++) { 173 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 174 EG_PCB_STAT) != EG_PCB_NULL) 175 break; 176 delay(10); 177 } 178 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) == statb) 179 return 0; 180 return 1; 181 } 182 183 static int 184 egreadPCBready(bus_space_tag_t iot, bus_space_handle_t ioh) 185 { 186 int i; 187 188 for (i=0; i < 10000; i++) { 189 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) 190 return 0; 191 delay(5); 192 } 193 DPRINTF(("PCB read not ready\n")); 194 return 1; 195 } 196 197 static int 198 egwritePCB(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t *pcb) 199 { 200 int i; 201 uint8_t len; 202 203 bus_space_write_1(iot, ioh, EG_CONTROL, 204 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 205 206 len = pcb[1] + 2; 207 for (i = 0; i < len; i++) 208 egoutPCB(iot, ioh, pcb[i]); 209 210 for (i=0; i < 4000; i++) { 211 if (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HCRE) 212 break; 213 delay(10); 214 } 215 216 bus_space_write_1(iot, ioh, EG_CONTROL, 217 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_DONE); 218 219 egoutPCB(iot, ioh, len); 220 221 if (egreadPCBstat(iot, ioh, EG_PCB_ACCEPT)) 222 return 1; 223 return 0; 224 } 225 226 static int 227 egreadPCB(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t *pcb) 228 { 229 int i; 230 231 bus_space_write_1(iot, ioh, EG_CONTROL, 232 (bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); 233 234 memset(pcb, 0, EG_PCBLEN); 235 236 if (egreadPCBready(iot, ioh)) 237 return 1; 238 239 pcb[0] = bus_space_read_1(iot, ioh, EG_COMMAND); 240 241 if (egreadPCBready(iot, ioh)) 242 return 1; 243 244 pcb[1] = bus_space_read_1(iot, ioh, EG_COMMAND); 245 246 if (pcb[1] > 62) { 247 DPRINTF(("len %d too large\n", pcb[1])); 248 return 1; 249 } 250 251 for (i = 0; i < pcb[1]; i++) { 252 if (egreadPCBready(iot, ioh)) 253 return 1; 254 pcb[2+i] = bus_space_read_1(iot, ioh, EG_COMMAND); 255 } 256 if (egreadPCBready(iot, ioh)) 257 return 1; 258 if (egreadPCBstat(iot, ioh, EG_PCB_DONE)) 259 return 1; 260 if (bus_space_read_1(iot, ioh, EG_COMMAND) != pcb[1] + 2) { 261 return 1; 262 } 263 264 bus_space_write_1(iot, ioh, EG_CONTROL, 265 (bus_space_read_1(iot, ioh, EG_CONTROL) & 266 ~EG_PCB_STAT) | EG_PCB_ACCEPT); 267 268 return 0; 269 } 270 271 /* 272 * Real stuff 273 */ 274 275 static int 276 egprobe(device_t parent, cfdata_t match, void *aux) 277 { 278 struct isa_attach_args *ia = aux; 279 bus_space_tag_t iot = ia->ia_iot; 280 bus_space_handle_t ioh; 281 int i, rval; 282 static uint8_t pcb[EG_PCBLEN]; 283 284 rval = 0; 285 286 /* 287 * XXX This probe is slow. If there are no ISA expansion slots, 288 * then skip it. 289 */ 290 if (isa_get_slotcount() == 0) 291 return (0); 292 293 if (ia->ia_nio < 1) 294 return (0); 295 if (ia->ia_nirq < 1) 296 return (0); 297 298 if (ISA_DIRECT_CONFIG(ia)) 299 return (0); 300 301 /* Disallow wildcarded i/o address. */ 302 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 303 return (0); 304 305 /* Disallow wildcarded IRQ. */ 306 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 307 return (0); 308 309 if ((ia->ia_io[0].ir_addr & ~0x07f0) != 0) { 310 DPRINTF(("Weird iobase %x\n", ia->ia_io[0].ir_addr)); 311 return 0; 312 } 313 314 /* Map i/o space. */ 315 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 316 DPRINTF(("egprobe: can't map i/o space in probe\n")); 317 return 0; 318 } 319 320 /* hard reset card */ 321 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_RESET); 322 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 323 for (i = 0; i < 500; i++) { 324 delay(1000); 325 if ((bus_space_read_1(iot, ioh, EG_STATUS) & 326 EG_PCB_STAT) == EG_PCB_NULL) 327 break; 328 } 329 if ((bus_space_read_1(iot, ioh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) { 330 DPRINTF(("egprobe: Reset failed\n")); 331 goto out; 332 } 333 pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 334 pcb[1] = 0; 335 if (egwritePCB(iot, ioh, pcb) != 0) 336 goto out; 337 338 if ((egreadPCB(iot, ioh, pcb) != 0) || 339 pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 340 pcb[1] != 0x0a) { 341 egprintpcb(pcb); 342 goto out; 343 } 344 345 ia->ia_nio = 1; 346 ia->ia_io[0].ir_size = 0x08; 347 348 ia->ia_nirq = 1; 349 350 ia->ia_niomem = 0; 351 ia->ia_ndrq = 0; 352 353 rval = 1; 354 355 out: 356 bus_space_unmap(iot, ioh, 0x08); 357 return rval; 358 } 359 360 static void 361 egattach(device_t parent, device_t self, void *aux) 362 { 363 struct eg_softc *sc = device_private(self); 364 struct isa_attach_args *ia = aux; 365 bus_space_tag_t iot = ia->ia_iot; 366 bus_space_handle_t ioh; 367 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 368 uint8_t myaddr[ETHER_ADDR_LEN]; 369 370 sc->sc_dev = self; 371 372 printf("\n"); 373 374 /* Map i/o space. */ 375 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 0x08, 0, &ioh)) { 376 aprint_error_dev(self, "can't map i/o space\n"); 377 return; 378 } 379 380 sc->sc_iot = iot; 381 sc->sc_ioh = ioh; 382 383 sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ 384 sc->eg_pcb[1] = 0; 385 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 386 aprint_error_dev(self, "error requesting adapter info\n"); 387 return; 388 } 389 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 390 egprintpcb(sc->eg_pcb); 391 aprint_error_dev(self, "error reading adapter info\n"); 392 return; 393 } 394 395 if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ 396 sc->eg_pcb[1] != 0x0a) { 397 egprintpcb(sc->eg_pcb); 398 aprint_error_dev(self, "bogus adapter info\n"); 399 return; 400 } 401 402 sc->eg_rom_major = sc->eg_pcb[3]; 403 sc->eg_rom_minor = sc->eg_pcb[2]; 404 sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 405 406 egstop(sc); 407 408 sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ 409 sc->eg_pcb[1] = 0; 410 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 411 aprint_error_dev(self, "can't send Get Station Address\n"); 412 return; 413 } 414 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 415 aprint_error_dev(self, "can't read station address\n"); 416 egprintpcb(sc->eg_pcb); 417 return; 418 } 419 420 /* check Get station address response */ 421 if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { 422 aprint_error_dev(self, "card responded with garbage (1)\n"); 423 egprintpcb(sc->eg_pcb); 424 return; 425 } 426 memcpy(myaddr, &sc->eg_pcb[2], ETHER_ADDR_LEN); 427 428 aprint_normal_dev(self, "ROM v%d.%02d %dk address %s\n", 429 sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, 430 ether_sprintf(myaddr)); 431 432 sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ 433 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) { 434 aprint_error_dev(self, "can't send Set Station Address\n"); 435 return; 436 } 437 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 438 aprint_error_dev(self, 439 "can't read Set Station Address status\n"); 440 egprintpcb(sc->eg_pcb); 441 return; 442 } 443 if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || 444 sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { 445 aprint_error_dev(self, "card responded with garbage (2)\n"); 446 egprintpcb(sc->eg_pcb); 447 return; 448 } 449 450 /* Initialize ifnet structure. */ 451 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 452 ifp->if_softc = sc; 453 ifp->if_start = egstart; 454 ifp->if_ioctl = egioctl; 455 ifp->if_watchdog = egwatchdog; 456 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; 457 IFQ_SET_READY(&ifp->if_snd); 458 459 /* Now we can attach the interface. */ 460 if_attach(ifp); 461 ether_ifattach(ifp, myaddr); 462 463 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 464 IST_EDGE, IPL_NET, egintr, sc); 465 466 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 467 RND_TYPE_NET, RND_FLAG_DEFAULT); 468 } 469 470 static void 471 eginit(struct eg_softc *sc) 472 { 473 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 474 bus_space_tag_t iot = sc->sc_iot; 475 bus_space_handle_t ioh = sc->sc_ioh; 476 477 /* soft reset the board */ 478 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_FLSH); 479 delay(100); 480 bus_space_write_1(iot, ioh, EG_CONTROL, EG_CTL_ATTN); 481 delay(100); 482 bus_space_write_1(iot, ioh, EG_CONTROL, 0); 483 delay(200); 484 485 sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ 486 sc->eg_pcb[1] = 2; 487 sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ 488 sc->eg_pcb[3] = 0; 489 if (egwritePCB(iot, ioh, sc->eg_pcb) != 0) 490 aprint_error_dev(sc->sc_dev, "can't send Configure 82586\n"); 491 492 if (egreadPCB(iot, ioh, sc->eg_pcb) != 0) { 493 aprint_error_dev(sc->sc_dev, 494 "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 = kmem_alloc(EG_BUFLEN, KM_NOSLEEP); 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 = kmem_alloc(EG_BUFLEN, KM_NOSLEEP); 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 static 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 static 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 uint16_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 = uimax(m0->m_pkthdr.len, ETHER_MIN_LEN - ETHER_CRC_LEN); 579 580 bpf_mtap(ifp, m0, BPF_D_OUT); 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, 592 "can't send Send Packet command\n"); 593 if_statinc(ifp, if_oerrors); 594 ifp->if_flags &= ~IFF_OACTIVE; 595 m_freem(m0); 596 goto loop; 597 } 598 599 buffer = sc->eg_outbuf; 600 for (m = m0; m != 0; m = m->m_next) { 601 memcpy(buffer, mtod(m, void *), m->m_len); 602 buffer += m->m_len; 603 } 604 if (len > m0->m_pkthdr.len) 605 memset(buffer, 0, len - m0->m_pkthdr.len); 606 607 /* set direction bit: host -> adapter */ 608 bus_space_write_1(iot, ioh, EG_CONTROL, 609 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 610 611 for (ptr = (uint16_t *) sc->eg_outbuf; len > 0; len -= 2) { 612 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 613 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 614 ; /* XXX need timeout here */ 615 } 616 617 m_freem(m0); 618 } 619 620 static int 621 egintr(void *arg) 622 { 623 struct eg_softc *sc = arg; 624 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 625 bus_space_tag_t iot = sc->sc_iot; 626 bus_space_handle_t ioh = sc->sc_ioh; 627 int i, len, serviced; 628 uint16_t *ptr; 629 630 serviced = 0; 631 632 while (bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_ACRF) { 633 egreadPCB(iot, ioh, sc->eg_pcb); 634 switch (sc->eg_pcb[0]) { 635 case EG_RSP_RECVPACKET: 636 len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); 637 638 /* Set direction bit : Adapter -> host */ 639 bus_space_write_1(iot, ioh, EG_CONTROL, 640 bus_space_read_1(iot, ioh, EG_CONTROL) | EG_CTL_DIR); 641 642 for (ptr = (uint16_t *) sc->eg_inbuf; 643 len > 0; len -= 2) { 644 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & 645 EG_STAT_HRDY)) 646 ; 647 *ptr++ = bus_space_read_2(iot, ioh, EG_DATA); 648 } 649 650 len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); 651 egread(sc, sc->eg_inbuf, len); 652 653 sc->eg_incount--; 654 egrecv(sc); 655 serviced = 1; 656 break; 657 658 case EG_RSP_SENDPACKET: 659 if (sc->eg_pcb[6] || sc->eg_pcb[7]) { 660 DPRINTF(("%s: packet dropped\n", 661 device_xname(sc->sc_dev))); 662 if_statinc(ifp, if_oerrors); 663 } else 664 if_statinc(ifp, if_opackets); 665 if (sc->eg_pcb[8] & 0xf) 666 if_statadd(ifp, if_collisions, 667 sc->eg_pcb[8] & 0xf); 668 sc->sc_ethercom.ec_if.if_flags &= ~IFF_OACTIVE; 669 egstart(&sc->sc_ethercom.ec_if); 670 serviced = 1; 671 break; 672 673 /* XXX byte-order and type-size bugs here... */ 674 case EG_RSP_GETSTATS: 675 DPRINTF(("%s: Card Statistics\n", 676 device_xname(sc->sc_dev))); 677 memcpy(&i, &sc->eg_pcb[2], sizeof(i)); 678 DPRINTF(("Receive Packets %d\n", i)); 679 memcpy(&i, &sc->eg_pcb[6], sizeof(i)); 680 DPRINTF(("Transmit Packets %d\n", i)); 681 DPRINTF(("CRC errors %d\n", 682 *(short *) &sc->eg_pcb[10])); 683 DPRINTF(("alignment errors %d\n", 684 *(short *) &sc->eg_pcb[12])); 685 DPRINTF(("no resources errors %d\n", 686 *(short *) &sc->eg_pcb[14])); 687 DPRINTF(("overrun errors %d\n", 688 *(short *) &sc->eg_pcb[16])); 689 serviced = 1; 690 break; 691 692 default: 693 printf("%s: egintr: Unknown response %x??\n", 694 device_xname(sc->sc_dev), sc->eg_pcb[0]); 695 egprintpcb(sc->eg_pcb); 696 break; 697 } 698 699 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 700 } 701 702 return serviced; 703 } 704 705 /* 706 * Pass a packet up to the higher levels. 707 */ 708 static void 709 egread(struct eg_softc *sc, void *buf, int len) 710 { 711 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 712 struct mbuf *m; 713 714 if (len <= sizeof(struct ether_header) || 715 len > ETHER_MAX_LEN) { 716 aprint_error_dev(sc->sc_dev, 717 "invalid packet size %d; dropping\n", len); 718 if_statinc(ifp, if_ierrors); 719 return; 720 } 721 722 /* Pull packet off interface. */ 723 m = egget(sc, buf, len); 724 if (m == 0) { 725 if_statinc(ifp, if_ierrors); 726 return; 727 } 728 729 if_percpuq_enqueue(ifp->if_percpuq, m); 730 } 731 732 /* 733 * convert buf into mbufs 734 */ 735 static struct mbuf * 736 egget(struct eg_softc *sc, void *buf, int totlen) 737 { 738 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 739 struct mbuf *m, *m0, *newm; 740 int len; 741 742 MGETHDR(m0, M_DONTWAIT, MT_DATA); 743 if (m0 == 0) 744 return (0); 745 m_set_rcvif(m0, ifp); 746 m0->m_pkthdr.len = totlen; 747 len = MHLEN; 748 m = m0; 749 750 while (totlen > 0) { 751 if (totlen >= MINCLSIZE) { 752 MCLGET(m, M_DONTWAIT); 753 if ((m->m_flags & M_EXT) == 0) 754 goto bad; 755 len = MCLBYTES; 756 } 757 758 m->m_len = len = uimin(totlen, len); 759 memcpy(mtod(m, void *), buf, len); 760 buf = (char *)buf + len; 761 762 totlen -= len; 763 if (totlen > 0) { 764 MGET(newm, M_DONTWAIT, MT_DATA); 765 if (newm == 0) 766 goto bad; 767 len = MLEN; 768 m = m->m_next = newm; 769 } 770 } 771 772 return (m0); 773 774 bad: 775 m_freem(m0); 776 return (0); 777 } 778 779 static int 780 egioctl(struct ifnet *ifp, unsigned long cmd, void *data) 781 { 782 struct eg_softc *sc = ifp->if_softc; 783 struct ifaddr *ifa = (struct ifaddr *)data; 784 int s, error = 0; 785 786 s = splnet(); 787 788 switch (cmd) { 789 790 case SIOCINITIFADDR: 791 ifp->if_flags |= IFF_UP; 792 793 eginit(sc); 794 switch (ifa->ifa_addr->sa_family) { 795 #ifdef INET 796 case AF_INET: 797 arp_ifinit(ifp, ifa); 798 break; 799 #endif 800 default: 801 break; 802 } 803 break; 804 805 case SIOCSIFFLAGS: 806 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 807 break; 808 /* XXX re-use ether_ioctl() */ 809 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 810 case IFF_RUNNING: 811 /* 812 * If interface is marked down and it is running, then 813 * stop it. 814 */ 815 egstop(sc); 816 ifp->if_flags &= ~IFF_RUNNING; 817 break; 818 case IFF_UP: 819 /* 820 * If interface is marked up and it is stopped, then 821 * start it. 822 */ 823 eginit(sc); 824 break; 825 default: 826 sc->eg_pcb[0] = EG_CMD_GETSTATS; 827 sc->eg_pcb[1] = 0; 828 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) { 829 DPRINTF(("write error\n")); 830 } 831 /* 832 * XXX deal with flags changes: 833 * IFF_MULTICAST, IFF_PROMISC, 834 * IFF_LINK0, IFF_LINK1, 835 */ 836 break; 837 } 838 break; 839 840 default: 841 error = ether_ioctl(ifp, cmd, data); 842 break; 843 } 844 845 splx(s); 846 return error; 847 } 848 849 static void 850 egreset(struct eg_softc *sc) 851 { 852 int s; 853 854 DPRINTF(("%s: egreset()\n", device_xname(sc->sc_dev))); 855 s = splnet(); 856 egstop(sc); 857 eginit(sc); 858 splx(s); 859 } 860 861 static void 862 egwatchdog(struct ifnet *ifp) 863 { 864 struct eg_softc *sc = ifp->if_softc; 865 866 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 867 if_statinc(ifp, if_oerrors); 868 869 egreset(sc); 870 } 871 872 static void 873 egstop(struct eg_softc *sc) 874 { 875 876 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 877 } 878
Indexes created Thu Oct 02 10:09:58 GMT 2025