1/* $NetBSD: if_eg.c,v 1.103 2022/09/17 17:00:02 thorpej Exp $ */ 2 3/* 4 * Copyright (c) 1993 Dean Huxley <dean@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 1.103 2022/09/17 17:00:02 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 */ 97struct 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 115static int egprobe(device_t, cfdata_t, void *); 116static void egattach(device_t, device_t, void *); 117 118CFATTACH_DECL_NEW(eg, sizeof(struct eg_softc), 119 egprobe, egattach, NULL, NULL); 120 121static int egintr(void *); 122static void eginit(struct eg_softc *); 123static int egioctl(struct ifnet *, u_long, void *); 124static void egrecv(struct eg_softc *); 125static void egstart(struct ifnet *); 126static void egwatchdog(struct ifnet *); 127static void egreset(struct eg_softc *); 128static void egread(struct eg_softc *, void *, int); 129static struct mbuf *egget(struct eg_softc *, void *, int); 130static void egstop(struct eg_softc *); 131 132static inline void egprintpcb(uint8_t *); 133static int egoutPCB(bus_space_tag_t, bus_space_handle_t, uint8_t); 134static int egreadPCBstat(bus_space_tag_t, bus_space_handle_t, uint8_t); 135static int egreadPCBready(bus_space_tag_t, bus_space_handle_t); 136static int egwritePCB(bus_space_tag_t, bus_space_handle_t, uint8_t *); 137static int egreadPCB(bus_space_tag_t, bus_space_handle_t, uint8_t *); 138 139/* 140 * Support stuff 141 */ 142 143static inline void 144egprintpcb(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 152static int 153egoutPCB(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 168static int 169egreadPCBstat(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 184static int 185egreadPCBready(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 198static int 199egwritePCB(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 227static int 228egreadPCB(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 276static int 277egprobe(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 361static void 362egattach(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 471static void 472eginit(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 530static void 531egrecv(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 551static void 552egstart(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; 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) == 0) 563 return; 564 565 if (sc->eg_txbusy) 566 return; 567 568loop: 569 /* Dequeue the next datagram. */ 570 IFQ_DEQUEUE(&ifp->if_snd, m0); 571 if (m0 == 0) 572 return; 573 574 sc->eg_txbusy = true; 575 576 /* We need to use m->m_pkthdr.len, so require the header */ 577 KASSERT(m0->m_flags & M_PKTHDR); 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 sc->eg_txbusy = false; 595 m_freem(m0); 596 goto loop; 597 } 598 599 m_copydata(m0, 0, m0->m_pkthdr.len, sc->eg_outbuf); 600 if (len > m0->m_pkthdr.len) { 601 memset((uint8_t *)sc->eg_outbuf + m0->m_pkthdr.len, 0, 602 len - m0->m_pkthdr.len); 603 } 604 605 /* set direction bit: host -> adapter */ 606 bus_space_write_1(iot, ioh, EG_CONTROL, 607 bus_space_read_1(iot, ioh, EG_CONTROL) & ~EG_CTL_DIR); 608 609 for (ptr = (uint16_t *) sc->eg_outbuf; len > 0; len -= 2) { 610 bus_space_write_2(iot, ioh, EG_DATA, *ptr++); 611 while (!(bus_space_read_1(iot, ioh, EG_STATUS) & EG_STAT_HRDY)) 612 ; /* XXX need timeout here */ 613 } 614 615 m_freem(m0); 616} 617 618static int 619egintr(void *arg) 620{ 621 struct eg_softc *sc = arg; 622 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 623 bus_space_tag_t iot = sc->sc_iot; 624 bus_space_handle_t ioh = sc->sc_ioh; 625 int i, len, serviced; 626 uint16_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 = (uint16_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 if_statinc(ifp, if_oerrors); 661 } else 662 if_statinc(ifp, if_opackets); 663 if (sc->eg_pcb[8] & 0xf) 664 if_statadd(ifp, if_collisions, 665 sc->eg_pcb[8] & 0xf); 666 sc->eg_txbusy = false; 667 egstart(&sc->sc_ethercom.ec_if); 668 serviced = 1; 669 break; 670 671 /* XXX byte-order and type-size bugs here... */ 672 case EG_RSP_GETSTATS: 673 DPRINTF(("%s: Card Statistics\n", 674 device_xname(sc->sc_dev))); 675 memcpy(&i, &sc->eg_pcb[2], sizeof(i)); 676 DPRINTF(("Receive Packets %d\n", i)); 677 memcpy(&i, &sc->eg_pcb[6], sizeof(i)); 678 DPRINTF(("Transmit Packets %d\n", i)); 679 DPRINTF(("CRC errors %d\n", 680 *(short *) &sc->eg_pcb[10])); 681 DPRINTF(("alignment errors %d\n", 682 *(short *) &sc->eg_pcb[12])); 683 DPRINTF(("no resources errors %d\n", 684 *(short *) &sc->eg_pcb[14])); 685 DPRINTF(("overrun errors %d\n", 686 *(short *) &sc->eg_pcb[16])); 687 serviced = 1; 688 break; 689 690 default: 691 printf("%s: egintr: Unknown response %x??\n", 692 device_xname(sc->sc_dev), sc->eg_pcb[0]); 693 egprintpcb(sc->eg_pcb); 694 break; 695 } 696 697 rnd_add_uint32(&sc->rnd_source, sc->eg_pcb[0]); 698 } 699 700 return serviced; 701} 702 703/* 704 * Pass a packet up to the higher levels. 705 */ 706static void 707egread(struct eg_softc *sc, void *buf, int len) 708{ 709 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 710 struct mbuf *m; 711 712 if (len <= sizeof(struct ether_header) || 713 len > ETHER_MAX_LEN) { 714 aprint_error_dev(sc->sc_dev, 715 "invalid packet size %d; dropping\n", len); 716 if_statinc(ifp, if_ierrors); 717 return; 718 } 719 720 /* Pull packet off interface. */ 721 m = egget(sc, buf, len); 722 if (m == 0) { 723 if_statinc(ifp, if_ierrors); 724 return; 725 } 726 727 if_percpuq_enqueue(ifp->if_percpuq, m); 728} 729 730/* 731 * convert buf into mbufs 732 */ 733static struct mbuf * 734egget(struct eg_softc *sc, void *buf, int totlen) 735{ 736 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 737 struct mbuf *m, *m0, *newm; 738 int len; 739 740 MGETHDR(m0, M_DONTWAIT, MT_DATA); 741 if (m0 == 0) 742 return (0); 743 m_set_rcvif(m0, ifp); 744 m0->m_pkthdr.len = totlen; 745 len = MHLEN; 746 m = m0; 747 748 while (totlen > 0) { 749 if (totlen >= MINCLSIZE) { 750 MCLGET(m, M_DONTWAIT); 751 if ((m->m_flags & M_EXT) == 0) 752 goto bad; 753 len = MCLBYTES; 754 } 755 756 m->m_len = len = uimin(totlen, len); 757 memcpy(mtod(m, void *), buf, len); 758 buf = (char *)buf + len; 759 760 totlen -= len; 761 if (totlen > 0) { 762 MGET(newm, M_DONTWAIT, MT_DATA); 763 if (newm == 0) 764 goto bad; 765 len = MLEN; 766 m = m->m_next = newm; 767 } 768 } 769 770 return (m0); 771 772bad: 773 m_freem(m0); 774 return (0); 775} 776 777static int 778egioctl(struct ifnet *ifp, unsigned long cmd, void *data) 779{ 780 struct eg_softc *sc = ifp->if_softc; 781 struct ifaddr *ifa = (struct ifaddr *)data; 782 int s, error = 0; 783 784 s = splnet(); 785 786 switch (cmd) { 787 788 case SIOCINITIFADDR: 789 ifp->if_flags |= IFF_UP; 790 791 eginit(sc); 792 switch (ifa->ifa_addr->sa_family) { 793#ifdef INET 794 case AF_INET: 795 arp_ifinit(ifp, ifa); 796 break; 797#endif 798 default: 799 break; 800 } 801 break; 802 803 case SIOCSIFFLAGS: 804 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 805 break; 806 /* XXX re-use ether_ioctl() */ 807 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 808 case IFF_RUNNING: 809 /* 810 * If interface is marked down and it is running, then 811 * stop it. 812 */ 813 egstop(sc); 814 ifp->if_flags &= ~IFF_RUNNING; 815 break; 816 case IFF_UP: 817 /* 818 * If interface is marked up and it is stopped, then 819 * start it. 820 */ 821 eginit(sc); 822 break; 823 default: 824 sc->eg_pcb[0] = EG_CMD_GETSTATS; 825 sc->eg_pcb[1] = 0; 826 if (egwritePCB(sc->sc_iot, sc->sc_ioh, sc->eg_pcb) != 0) { 827 DPRINTF(("write error\n")); 828 } 829 /* 830 * XXX deal with flags changes: 831 * IFF_MULTICAST, IFF_PROMISC, 832 * IFF_LINK0, IFF_LINK1, 833 */ 834 break; 835 } 836 break; 837 838 default: 839 error = ether_ioctl(ifp, cmd, data); 840 break; 841 } 842 843 splx(s); 844 return error; 845} 846 847static void 848egreset(struct eg_softc *sc) 849{ 850 int s; 851 852 DPRINTF(("%s: egreset()\n", device_xname(sc->sc_dev))); 853 s = splnet(); 854 egstop(sc); 855 eginit(sc); 856 splx(s); 857} 858 859static void 860egwatchdog(struct ifnet *ifp) 861{ 862 struct eg_softc *sc = ifp->if_softc; 863 864 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 865 if_statinc(ifp, if_oerrors); 866 867 egreset(sc); 868} 869 870static void 871egstop(struct eg_softc *sc) 872{ 873 874 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EG_CONTROL, 0); 875} 876