if_ef.c revision 1.35
1 /* $NetBSD: if_ef.c,v 1.35 2019/11/10 21:16:35 chs Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Rafal K. Boni. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: if_ef.c,v 1.35 2019/11/10 21:16:35 chs Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/mbuf.h> 38 #include <sys/errno.h> 39 #include <sys/device.h> 40 #include <sys/protosw.h> 41 #include <sys/socket.h> 42 43 #include <net/if.h> 44 #include <net/if_dl.h> 45 #include <net/if_types.h> 46 #include <net/if_media.h> 47 #include <net/if_ether.h> 48 49 #include <sys/cpu.h> 50 #include <sys/bus.h> 51 #include <sys/intr.h> 52 53 #include <dev/isa/isareg.h> 54 #include <dev/isa/isavar.h> 55 56 #include <dev/ic/i82586reg.h> 57 #include <dev/ic/i82586var.h> 58 #include <dev/isa/if_efreg.h> 59 #include <dev/isa/elink.h> 60 61 #ifdef EF_DEBUG 62 #define DPRINTF(x) printf x 63 #else 64 #define DPRINTF(x) 65 #endif 66 67 struct ef_softc { 68 struct ie_softc sc_ie; 69 70 bus_space_tag_t sc_regt; /* space tag for registers */ 71 bus_space_handle_t sc_regh; /* space handle for registers */ 72 73 void* sc_ih; /* interrupt handle */ 74 75 uint8_t card_rev; /* hardware revision */ 76 uint8_t card_type; /* card model -- AUI/BNC or TP */ 77 }; 78 79 static int ef_media[] = { 80 IFM_ETHER | IFM_10_5, 81 IFM_ETHER | IFM_10_2, 82 }; 83 #define NEF_MEDIA __arraycount(ef_media) 84 85 static int eftp_media[] = { 86 IFM_ETHER | IFM_10_T, 87 }; 88 #define NEFTP_MEDIA __arraycount(eftp_media) 89 90 /* Routines required by the MI i82586 driver API */ 91 static void ef_reset(struct ie_softc *, int); 92 static void ef_hwinit(struct ie_softc *); 93 static void ef_atten(struct ie_softc *, int); 94 static int ef_intrhook(struct ie_softc *, int); 95 96 static void ef_copyin(struct ie_softc *, void *, int, size_t); 97 static void ef_copyout(struct ie_softc *, const void *, int, size_t); 98 99 static uint16_t ef_read_16(struct ie_softc *, int); 100 static void ef_write_16(struct ie_softc *, int, uint16_t); 101 static void ef_write_24(struct ie_softc *, int, int); 102 103 static void ef_mediastatus(struct ie_softc *, struct ifmediareq *); 104 105 /* Local routines */ 106 static int ef_port_check(bus_space_tag_t, bus_space_handle_t); 107 108 static int ef_match(device_t, cfdata_t, void *); 109 static void ef_attach(device_t, device_t, void *); 110 111 /* 112 * This keeps track of which ISAs have been through an ie probe sequence. 113 * A simple static variable isn't enough, since it's conceivable that 114 * a system might have more than one ISA bus. 115 * 116 * The "isa_bus" member is a pointer to the parent ISA bus device struct 117 * which will unique per ISA bus. 118 */ 119 120 #define MAXCARDS_PER_ISABUS 8 /* If you have more than 8, you lose */ 121 122 struct ef_isabus { 123 LIST_ENTRY(ef_isabus) isa_link; 124 device_t isa_bus; 125 126 int bus_state; 127 128 struct card { 129 bus_addr_t iobase; 130 bus_addr_t maddr; 131 bus_size_t msize; 132 int irq; 133 int available; 134 } isa_cards[MAXCARDS_PER_ISABUS]; 135 }; 136 137 static LIST_HEAD(, ef_isabus) ef_isa_buses; 138 static int ef_isa_buses_inited; 139 140 static void 141 ef_card_add(struct ef_isabus *bus, bus_addr_t iobase, bus_addr_t maddr, 142 bus_size_t msiz, int irq) 143 { 144 int idx; 145 146 DPRINTF(("Adding 3c507 at 0x%x, IRQ %d, Mem 0x%lx/%zu\n", 147 (u_int) iobase, irq, (u_long) maddr, msiz)); 148 149 for (idx = 0; idx < MAXCARDS_PER_ISABUS; idx++) { 150 if (bus->isa_cards[idx].available == 0) { 151 bus->isa_cards[idx].iobase = iobase; 152 bus->isa_cards[idx].maddr = maddr; 153 bus->isa_cards[idx].msize = msiz; 154 bus->isa_cards[idx].irq = irq; 155 bus->isa_cards[idx].available = 1; 156 break; 157 } 158 } 159 } 160 161 /* 162 * 3C507 support routines 163 */ 164 static void 165 ef_reset(struct ie_softc *sc, int why) 166 { 167 struct ef_softc *esc = (struct ef_softc *)sc; 168 169 switch (why) { 170 case CHIP_PROBE: 171 /* Reset to chip to see if it responds */ 172 bus_space_write_1(esc->sc_regt, esc->sc_regh, 173 EF_CTRL, EF_CTRL_RESET); 174 DELAY(100); 175 bus_space_write_1(esc->sc_regt, esc->sc_regh, 176 EF_CTRL, EF_CTRL_NORMAL); 177 DELAY(100); 178 break; 179 180 case CARD_RESET: 181 /* 182 * This takes around 10sec, and we can get 183 * by quite well w/out it... 184 */ 185 break; 186 } 187 } 188 189 static void 190 ef_atten(struct ie_softc *sc, int why) 191 { 192 struct ef_softc *esc = (struct ef_softc *)sc; 193 194 bus_space_write_1(esc->sc_regt, esc->sc_regh, EF_ATTN, 1); 195 } 196 197 static void 198 ef_hwinit(struct ie_softc *sc) 199 { 200 struct ef_softc *esc = (struct ef_softc *)sc; 201 202 bus_space_write_1(esc->sc_regt, esc->sc_regh, EF_ICTRL, 1); 203 } 204 205 static int 206 ef_intrhook(struct ie_softc *sc, int where) 207 { 208 unsigned char cr; 209 struct ef_softc *esc = (struct ef_softc *)sc; 210 211 switch (where) { 212 case INTR_ENTER: 213 /* Entering ISR: disable, ack card interrupts */ 214 cr = bus_space_read_1(esc->sc_regt, esc->sc_regh, EF_CTRL); 215 bus_space_write_1(esc->sc_regt, esc->sc_regh, EF_CTRL, 216 cr & ~EF_CTRL_IEN); 217 bus_space_write_1(esc->sc_regt, esc->sc_regh, EF_ICTRL, 1); 218 break; 219 220 case INTR_EXIT: 221 /* Exiting ISR: re-enable card interrupts */ 222 cr = bus_space_read_1(esc->sc_regt, esc->sc_regh, EF_CTRL); 223 bus_space_write_1(esc->sc_regt, esc->sc_regh, EF_CTRL, 224 cr | EF_CTRL_IEN); 225 break; 226 227 case INTR_LOOP: 228 /* Looping in ISR: ack new interrupts */ 229 bus_space_write_1(esc->sc_regt, esc->sc_regh, EF_ICTRL, 1); 230 break; 231 } 232 233 return 1; 234 } 235 236 static uint16_t 237 ef_read_16(struct ie_softc *sc, int offset) 238 { 239 240 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_READ); 241 return bus_space_read_2(sc->bt, sc->bh, offset); 242 } 243 244 static void 245 ef_copyin(struct ie_softc *sc, void *dst, int offset, size_t size) 246 { 247 int dribble; 248 uint8_t *bptr = dst; 249 250 bus_space_barrier(sc->bt, sc->bh, offset, size, 251 BUS_SPACE_BARRIER_READ); 252 253 if (offset % 2) { 254 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 255 offset++; bptr++; size--; 256 } 257 258 dribble = size % 2; 259 bus_space_read_region_2(sc->bt, sc->bh, offset, (uint16_t *) bptr, 260 size >> 1); 261 262 if (dribble) { 263 bptr += size - 1; 264 offset += size - 1; 265 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 266 } 267 } 268 269 static void 270 ef_copyout(struct ie_softc *sc, const void *src, int offset, size_t size) 271 { 272 int dribble; 273 int osize = size; 274 int ooffset = offset; 275 const uint8_t *bptr = src; 276 277 if (offset % 2) { 278 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 279 offset++; bptr++; size--; 280 } 281 282 dribble = size % 2; 283 bus_space_write_region_2(sc->bt, sc->bh, offset, 284 (const uint16_t *)bptr, size >> 1); 285 if (dribble) { 286 bptr += size - 1; 287 offset += size - 1; 288 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 289 } 290 291 bus_space_barrier(sc->bt, sc->bh, ooffset, osize, 292 BUS_SPACE_BARRIER_WRITE); 293 } 294 295 static void 296 ef_write_16(struct ie_softc *sc, int offset, uint16_t value) 297 { 298 299 bus_space_write_2(sc->bt, sc->bh, offset, value); 300 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_WRITE); 301 } 302 303 static void 304 ef_write_24(struct ie_softc *sc, int offset, int addr) 305 { 306 307 bus_space_write_4(sc->bt, sc->bh, offset, 308 addr + (u_long)sc->sc_maddr - (u_long)sc->sc_iobase); 309 bus_space_barrier(sc->bt, sc->bh, offset, 4, BUS_SPACE_BARRIER_WRITE); 310 } 311 312 static void 313 ef_mediastatus(struct ie_softc *sc, struct ifmediareq *ifmr) 314 { 315 struct ifmedia *ifm = &sc->sc_media; 316 317 /* The currently selected media is always the active media. */ 318 ifmr->ifm_active = ifm->ifm_cur->ifm_media; 319 } 320 321 static int 322 ef_match(device_t parent, cfdata_t cf, void *aux) 323 { 324 struct isa_attach_args * const ia = aux; 325 int idx; 326 struct ef_isabus *bus; 327 bus_space_handle_t ioh; 328 bus_space_tag_t iot = ia->ia_iot; 329 330 if (ISA_DIRECT_CONFIG(ia)) 331 return 0; 332 333 if (ef_isa_buses_inited == 0) { 334 LIST_INIT(&ef_isa_buses); 335 ef_isa_buses_inited = 1; 336 } 337 338 /* Probe this bus if we haven't done so already. */ 339 for (bus = ef_isa_buses.lh_first; bus != NULL; 340 bus = bus->isa_link.le_next) { 341 if (bus->isa_bus == parent) 342 break; 343 } 344 345 if (bus == NULL) { 346 bus_addr_t iobase; 347 348 /* Mark this bus so we don't probe it again. */ 349 bus = malloc(sizeof(struct ef_isabus), M_DEVBUF, M_WAITOK); 350 bus->bus_state = 0; /* Nothing done yet */ 351 bus->isa_bus = parent; 352 353 LIST_INSERT_HEAD(&ef_isa_buses, bus, isa_link); 354 355 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { 356 DPRINTF(("3c507 probe: can't map Etherlink ID port\n")); 357 return 0; 358 } 359 360 /* 361 * Reset and put card in CONFIG state without 362 * changing address. 363 */ 364 elink_reset(iot, ioh, device_unit(parent)); 365 elink_idseq(iot, ioh, ELINK_507_POLY); 366 elink_idseq(iot, ioh, ELINK_507_POLY); 367 bus_space_write_1(iot, ioh, 0, 0xff); 368 369 /* Unmap the ID port */ 370 bus_space_unmap(iot, ioh, 1); 371 372 bus->bus_state++; /* Cards now in CONFIG state */ 373 374 for (iobase = EF_IOBASE_LOW; iobase <= EF_IOBASE_HIGH; 375 iobase += EF_IOSIZE) { 376 /* Map the 507's port-space for the probe sequence. */ 377 if (bus_space_map(iot, iobase, EF_IOSIZE, 378 0, &ioh) != 0) 379 continue; 380 381 /* Now look for the 3Com magic bytes */ 382 383 if (ef_port_check(iot, ioh)) { 384 int irq; 385 uint8_t v; 386 bus_addr_t maddr; 387 bus_addr_t msiz1; 388 bus_space_handle_t memh; 389 390 irq = bus_space_read_1(iot, ioh, EF_IRQ) & 391 EF_IRQ_MASK; 392 393 v = bus_space_read_1(iot, ioh, EF_MADDR); 394 maddr = EF_MADDR_BASE + 395 ((v & EF_MADDR_MASK) << EF_MADDR_SHIFT); 396 msiz1 = ((v & EF_MSIZE_MASK) + 1) * 397 EF_MSIZE_STEP; 398 399 if (bus_space_map(ia->ia_memt, maddr, 400 msiz1, 0, &memh) == 0) { 401 ef_card_add(bus, iobase, maddr, 402 msiz1, irq); 403 bus_space_unmap(ia->ia_memt, 404 memh, msiz1); 405 } 406 } 407 bus_space_unmap(iot, ioh, EF_IOSIZE); 408 } 409 } 410 411 if (ia->ia_nio < 1) 412 return 0; 413 if (ia->ia_niomem < 1) 414 return 0; 415 if (ia->ia_nirq < 1) 416 return 0; 417 418 for (idx = 0; idx < MAXCARDS_PER_ISABUS; idx++) { 419 if (bus->isa_cards[idx].available != 1) 420 continue; 421 422 if (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT && 423 ia->ia_io[0].ir_addr != bus->isa_cards[idx].iobase) 424 continue; 425 426 if (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM && 427 ia->ia_iomem[0].ir_addr != bus->isa_cards[idx].maddr) 428 continue; 429 430 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && 431 ia->ia_irq[0].ir_irq != bus->isa_cards[idx].irq) 432 continue; 433 434 break; 435 } 436 437 if (idx == MAXCARDS_PER_ISABUS) 438 return 0; 439 440 bus->isa_cards[idx].available++; 441 442 ia->ia_nio = 1; 443 ia->ia_io[0].ir_addr = bus->isa_cards[idx].iobase; 444 ia->ia_io[0].ir_size = EF_IOSIZE; 445 446 ia->ia_niomem = 1; 447 ia->ia_iomem[0].ir_addr = bus->isa_cards[idx].maddr; 448 ia->ia_iomem[0].ir_size = bus->isa_cards[idx].msize; 449 450 ia->ia_nirq = 1; 451 ia->ia_irq[0].ir_irq = bus->isa_cards[idx].irq; 452 453 ia->ia_ndrq = 0; 454 455 return 1; 456 } 457 458 static void 459 ef_attach(device_t parent, device_t self, void *aux) 460 { 461 struct ef_softc *esc = device_private(self); 462 struct ie_softc *sc = &esc->sc_ie; 463 struct isa_attach_args *ia = aux; 464 bus_space_tag_t iot = ia->ia_iot; 465 466 int i; 467 char vers[20]; 468 struct ef_isabus *bus; 469 uint8_t partno[EF_TYPE_LEN]; 470 bus_space_handle_t ioh, memh; 471 uint8_t ethaddr[ETHER_ADDR_LEN]; 472 473 sc->sc_dev = self; 474 sc->hwinit = ef_hwinit; 475 sc->hwreset = ef_reset; 476 sc->chan_attn = ef_atten; 477 sc->intrhook = ef_intrhook; 478 479 sc->ie_bus_barrier = NULL; 480 481 sc->memcopyin = ef_copyin; 482 sc->memcopyout = ef_copyout; 483 sc->ie_bus_read16 = ef_read_16; 484 sc->ie_bus_write16 = ef_write_16; 485 sc->ie_bus_write24 = ef_write_24; 486 487 sc->sc_msize = 0; 488 489 /* 490 * NOP chains don't give any advantage on this card, in fact they 491 * seem to slow it down some. As the doctor says, "if it hurts, 492 * don't do it". 493 */ 494 sc->do_xmitnopchain = 0; 495 496 sc->sc_mediachange = NULL; 497 sc->sc_mediastatus = ef_mediastatus; 498 499 /* Find the cards parent bus */ 500 for (bus = ef_isa_buses.lh_first; bus != NULL; 501 bus = bus->isa_link.le_next) { 502 503 if (bus->isa_bus == parent) 504 break; 505 } 506 507 if (bus == NULL) 508 panic("%s: Can't find parent bus!", device_xname(self)); 509 510 511 /* If the bus hasn't been transitioned to the RUN state, do so now */ 512 if (bus->bus_state == 1) { 513 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh) != 0) { 514 DPRINTF(("\n%s: Can't map Elink ID port!\n", 515 device_xname(self))); 516 return; 517 } 518 519 bus_space_write_1(ia->ia_iot, ioh, 0, 0x00); 520 elink_idseq(ia->ia_iot, ioh, ELINK_507_POLY); 521 bus_space_write_1(ia->ia_iot, ioh, 0, 0x00); 522 bus_space_unmap(ia->ia_iot, ioh, 1); 523 524 bus->bus_state++; 525 } 526 527 /* Map i/o space. */ 528 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 529 ia->ia_io[0].ir_size, 0, &ioh) != 0) { 530 531 DPRINTF(("\n%s: can't map i/o space 0x%x-0x%x\n", 532 device_xname(self), ia->ia_io[0].ir_addr, 533 ia->ia_io[0].ir_addr + ia->ia_io[0].ir_size - 1)); 534 return; 535 } 536 537 esc->sc_regt = ia->ia_iot; 538 esc->sc_regh = ioh; 539 540 if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, 541 ia->ia_iomem[0].ir_size, 0, &memh) != 0) { 542 543 DPRINTF(("\n%s: can't map iomem space 0x%x-0x%x\n", 544 device_xname(self), ia->ia_iomem[0].ir_addr, 545 ia->ia_iomem[0].ir_addr + ia->ia_iomem[0].ir_size 546 - 1)); 547 bus_space_unmap(ia->ia_iot, ioh, ia->ia_io[0].ir_size); 548 return; 549 } 550 551 sc->bt = ia->ia_memt; 552 sc->bh = memh; 553 554 sc->sc_msize = ia->ia_iomem[0].ir_size; 555 sc->sc_maddr = (void *)memh; 556 sc->sc_iobase = (char *)sc->sc_maddr + sc->sc_msize - (1 << 24); 557 558 /* Set up pointers to important on-card control structures */ 559 sc->iscp = 0; 560 sc->scb = IE_ISCP_SZ; 561 sc->scp = sc->sc_msize + IE_SCP_ADDR - (1 << 24); 562 563 sc->buf_area = sc->scb + IE_SCB_SZ; 564 sc->buf_area_sz = sc->sc_msize - IE_ISCP_SZ - IE_SCB_SZ - IE_SCP_SZ; 565 566 /* Zero card memory */ 567 bus_space_set_region_1(sc->bt, sc->bh, 0, 0, sc->sc_msize); 568 569 /* Set card to 16-bit bus mode */ 570 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 571 IE_SYSBUS_16BIT); 572 573 /* Set up pointers to key structures */ 574 ef_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long)sc->iscp); 575 ef_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long)sc->scb); 576 ef_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long)sc->iscp); 577 578 /* flush setup of pointers, check if chip answers */ 579 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 580 BUS_SPACE_BARRIER_WRITE); 581 if (!i82586_proberam(sc)) { 582 DPRINTF(("\n%s: can't talk to i82586!\n", 583 device_xname(self))); 584 bus_space_unmap(ia->ia_iot, ioh, ia->ia_io[0].ir_size); 585 bus_space_unmap(ia->ia_memt, memh, ia->ia_iomem[0].ir_size); 586 return; 587 } 588 589 /* Set bank 2 for card part number and revision */ 590 bus_space_write_1(esc->sc_regt, esc->sc_regh, EF_CTRL, 591 EF_CTRL_NRST | EF_CTRL_BNK2); 592 593 /* The card revision is encoded in BCD */ 594 i = bus_space_read_1(esc->sc_regt, esc->sc_regh, EF_REV); 595 esc->card_rev = 10 * (i / 16) + (i % 16); 596 597 for (i = 0; i < EF_TYPE_LEN; i++) 598 partno[i] = bus_space_read_1(esc->sc_regt, esc->sc_regh, 599 EF_TYPE + i); 600 601 /* Use part number to guess if card is TP or AUI/BNC model */ 602 esc->card_type = EF_IS_TP(partno) ? EF_CARD_TP : EF_CARD_BNC; 603 604 /* Set bank 0 for ethernet address */ 605 bus_space_write_1(esc->sc_regt, esc->sc_regh, 606 EF_CTRL, EF_CTRL_NORMAL); 607 608 for (i = 0; i < EF_ADDR_LEN; i++) 609 ethaddr[i] = bus_space_read_1(esc->sc_regt, esc->sc_regh, 610 EF_ADDR + i); 611 612 snprintf(vers, sizeof(vers), "%s, rev. %d", 613 (esc->card_type == EF_CARD_TP) ? "3C507-TP" : "3C507", 614 esc->card_rev); 615 616 if (esc->card_type == EF_CARD_TP) 617 i82586_attach(sc, vers, ethaddr, eftp_media, NEFTP_MEDIA, 618 eftp_media[0]); 619 else { 620 uint8_t media = bus_space_read_1(esc->sc_regt, esc->sc_regh, 621 EF_MEDIA); 622 media = (media & EF_MEDIA_MASK) >> EF_MEDIA_SHIFT; 623 624 i82586_attach(sc, vers, ethaddr, ef_media, NEF_MEDIA, 625 ef_media[media]); 626 } 627 628 /* Clear the interrupt latch just in case. */ 629 bus_space_write_1(esc->sc_regt, esc->sc_regh, EF_ICTRL, 1); 630 631 esc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 632 IST_EDGE, IPL_NET, i82586_intr, sc); 633 if (esc->sc_ih == NULL) { 634 DPRINTF(("\n%s: can't establish interrupt\n", 635 device_xname(self))); 636 } 637 } 638 639 static int 640 ef_port_check(bus_space_tag_t iot, bus_space_handle_t ioh) 641 { 642 int i; 643 u_char ch; 644 const u_char *signature = EF_SIGNATURE; 645 646 for (i = 0; i < strlen(signature); i++) { 647 ch = bus_space_read_1(iot, ioh, i); 648 if (ch != signature[i]) 649 return 0; 650 } 651 652 /* If card is mapped in high memory (above 15Meg), we can't use it */ 653 ch = bus_space_read_1(iot, ioh, EF_MADDR); 654 if (ch & EF_MADDR_HIGH) 655 return 0; /* XXX: maybe we should panic?? */ 656 657 return 1; 658 } 659 660 CFATTACH_DECL_NEW(ef, sizeof(struct ef_softc), 661 ef_match, ef_attach, NULL, NULL); 662
Indexes created Wed Sep 24 22:09:59 GMT 2025