1 /* $NetBSD: if_ef.c,v 1.36 2022/07/12 02:03:57 thorpej 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 1.36 2022/07/12 02:03:57 thorpej 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 return bus_space_read_2(sc->bt, sc->bh, offset); 241 } 242 243 static void 244 ef_copyin(struct ie_softc *sc, void *dst, int offset, size_t size) 245 { 246 int dribble; 247 uint8_t *bptr = dst; 248 249 if (offset % 2) { 250 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 251 offset++; bptr++; size--; 252 } 253 254 dribble = size % 2; 255 bus_space_read_region_2(sc->bt, sc->bh, offset, (uint16_t *) bptr, 256 size >> 1); 257 258 if (dribble) { 259 bptr += size - 1; 260 offset += size - 1; 261 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 262 } 263 } 264 265 static void 266 ef_copyout(struct ie_softc *sc, const void *src, int offset, size_t size) 267 { 268 int dribble; 269 const uint8_t *bptr = src; 270 271 if (offset % 2) { 272 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 273 offset++; bptr++; size--; 274 } 275 276 dribble = size % 2; 277 bus_space_write_region_2(sc->bt, sc->bh, offset, 278 (const uint16_t *)bptr, size >> 1); 279 if (dribble) { 280 bptr += size - 1; 281 offset += size - 1; 282 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 283 } 284 } 285 286 static void 287 ef_write_16(struct ie_softc *sc, int offset, uint16_t value) 288 { 289 290 bus_space_write_2(sc->bt, sc->bh, offset, value); 291 } 292 293 static void 294 ef_write_24(struct ie_softc *sc, int offset, int addr) 295 { 296 297 bus_space_write_4(sc->bt, sc->bh, offset, 298 addr + (u_long)sc->sc_maddr - (u_long)sc->sc_iobase); 299 } 300 301 static void 302 ef_mediastatus(struct ie_softc *sc, struct ifmediareq *ifmr) 303 { 304 struct ifmedia *ifm = &sc->sc_media; 305 306 /* The currently selected media is always the active media. */ 307 ifmr->ifm_active = ifm->ifm_cur->ifm_media; 308 } 309 310 static int 311 ef_match(device_t parent, cfdata_t cf, void *aux) 312 { 313 struct isa_attach_args * const ia = aux; 314 int idx; 315 struct ef_isabus *bus; 316 bus_space_handle_t ioh; 317 bus_space_tag_t iot = ia->ia_iot; 318 319 if (ISA_DIRECT_CONFIG(ia)) 320 return 0; 321 322 if (ef_isa_buses_inited == 0) { 323 LIST_INIT(&ef_isa_buses); 324 ef_isa_buses_inited = 1; 325 } 326 327 /* Probe this bus if we haven't done so already. */ 328 for (bus = ef_isa_buses.lh_first; bus != NULL; 329 bus = bus->isa_link.le_next) { 330 if (bus->isa_bus == parent) 331 break; 332 } 333 334 if (bus == NULL) { 335 bus_addr_t iobase; 336 337 /* Mark this bus so we don't probe it again. */ 338 bus = malloc(sizeof(struct ef_isabus), M_DEVBUF, M_WAITOK); 339 bus->bus_state = 0; /* Nothing done yet */ 340 bus->isa_bus = parent; 341 342 LIST_INSERT_HEAD(&ef_isa_buses, bus, isa_link); 343 344 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh)) { 345 DPRINTF(("3c507 probe: can't map Etherlink ID port\n")); 346 return 0; 347 } 348 349 /* 350 * Reset and put card in CONFIG state without 351 * changing address. 352 */ 353 elink_reset(iot, ioh, device_unit(parent)); 354 elink_idseq(iot, ioh, ELINK_507_POLY); 355 elink_idseq(iot, ioh, ELINK_507_POLY); 356 bus_space_write_1(iot, ioh, 0, 0xff); 357 358 /* Unmap the ID port */ 359 bus_space_unmap(iot, ioh, 1); 360 361 bus->bus_state++; /* Cards now in CONFIG state */ 362 363 for (iobase = EF_IOBASE_LOW; iobase <= EF_IOBASE_HIGH; 364 iobase += EF_IOSIZE) { 365 /* Map the 507's port-space for the probe sequence. */ 366 if (bus_space_map(iot, iobase, EF_IOSIZE, 367 0, &ioh) != 0) 368 continue; 369 370 /* Now look for the 3Com magic bytes */ 371 372 if (ef_port_check(iot, ioh)) { 373 int irq; 374 uint8_t v; 375 bus_addr_t maddr; 376 bus_addr_t msiz1; 377 bus_space_handle_t memh; 378 379 irq = bus_space_read_1(iot, ioh, EF_IRQ) & 380 EF_IRQ_MASK; 381 382 v = bus_space_read_1(iot, ioh, EF_MADDR); 383 maddr = EF_MADDR_BASE + 384 ((v & EF_MADDR_MASK) << EF_MADDR_SHIFT); 385 msiz1 = ((v & EF_MSIZE_MASK) + 1) * 386 EF_MSIZE_STEP; 387 388 if (bus_space_map(ia->ia_memt, maddr, 389 msiz1, 0, &memh) == 0) { 390 ef_card_add(bus, iobase, maddr, 391 msiz1, irq); 392 bus_space_unmap(ia->ia_memt, 393 memh, msiz1); 394 } 395 } 396 bus_space_unmap(iot, ioh, EF_IOSIZE); 397 } 398 } 399 400 if (ia->ia_nio < 1) 401 return 0; 402 if (ia->ia_niomem < 1) 403 return 0; 404 if (ia->ia_nirq < 1) 405 return 0; 406 407 for (idx = 0; idx < MAXCARDS_PER_ISABUS; idx++) { 408 if (bus->isa_cards[idx].available != 1) 409 continue; 410 411 if (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT && 412 ia->ia_io[0].ir_addr != bus->isa_cards[idx].iobase) 413 continue; 414 415 if (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM && 416 ia->ia_iomem[0].ir_addr != bus->isa_cards[idx].maddr) 417 continue; 418 419 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && 420 ia->ia_irq[0].ir_irq != bus->isa_cards[idx].irq) 421 continue; 422 423 break; 424 } 425 426 if (idx == MAXCARDS_PER_ISABUS) 427 return 0; 428 429 bus->isa_cards[idx].available++; 430 431 ia->ia_nio = 1; 432 ia->ia_io[0].ir_addr = bus->isa_cards[idx].iobase; 433 ia->ia_io[0].ir_size = EF_IOSIZE; 434 435 ia->ia_niomem = 1; 436 ia->ia_iomem[0].ir_addr = bus->isa_cards[idx].maddr; 437 ia->ia_iomem[0].ir_size = bus->isa_cards[idx].msize; 438 439 ia->ia_nirq = 1; 440 ia->ia_irq[0].ir_irq = bus->isa_cards[idx].irq; 441 442 ia->ia_ndrq = 0; 443 444 return 1; 445 } 446 447 static void 448 ef_attach(device_t parent, device_t self, void *aux) 449 { 450 struct ef_softc *esc = device_private(self); 451 struct ie_softc *sc = &esc->sc_ie; 452 struct isa_attach_args *ia = aux; 453 bus_space_tag_t iot = ia->ia_iot; 454 455 int i; 456 char vers[20]; 457 struct ef_isabus *bus; 458 uint8_t partno[EF_TYPE_LEN]; 459 bus_space_handle_t ioh, memh; 460 uint8_t ethaddr[ETHER_ADDR_LEN]; 461 462 sc->sc_dev = self; 463 sc->hwinit = ef_hwinit; 464 sc->hwreset = ef_reset; 465 sc->chan_attn = ef_atten; 466 sc->intrhook = ef_intrhook; 467 468 sc->ie_bus_barrier = NULL; 469 470 sc->memcopyin = ef_copyin; 471 sc->memcopyout = ef_copyout; 472 sc->ie_bus_read16 = ef_read_16; 473 sc->ie_bus_write16 = ef_write_16; 474 sc->ie_bus_write24 = ef_write_24; 475 476 sc->sc_msize = 0; 477 478 /* 479 * NOP chains don't give any advantage on this card, in fact they 480 * seem to slow it down some. As the doctor says, "if it hurts, 481 * don't do it". 482 */ 483 sc->do_xmitnopchain = 0; 484 485 sc->sc_mediachange = NULL; 486 sc->sc_mediastatus = ef_mediastatus; 487 488 /* Find the cards parent bus */ 489 for (bus = ef_isa_buses.lh_first; bus != NULL; 490 bus = bus->isa_link.le_next) { 491 492 if (bus->isa_bus == parent) 493 break; 494 } 495 496 if (bus == NULL) 497 panic("%s: Can't find parent bus!", device_xname(self)); 498 499 500 /* If the bus hasn't been transitioned to the RUN state, do so now */ 501 if (bus->bus_state == 1) { 502 if (bus_space_map(iot, ELINK_ID_PORT, 1, 0, &ioh) != 0) { 503 DPRINTF(("\n%s: Can't map Elink ID port!\n", 504 device_xname(self))); 505 return; 506 } 507 508 bus_space_write_1(ia->ia_iot, ioh, 0, 0x00); 509 elink_idseq(ia->ia_iot, ioh, ELINK_507_POLY); 510 bus_space_write_1(ia->ia_iot, ioh, 0, 0x00); 511 bus_space_unmap(ia->ia_iot, ioh, 1); 512 513 bus->bus_state++; 514 } 515 516 /* Map i/o space. */ 517 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 518 ia->ia_io[0].ir_size, 0, &ioh) != 0) { 519 520 DPRINTF(("\n%s: can't map i/o space 0x%x-0x%x\n", 521 device_xname(self), ia->ia_io[0].ir_addr, 522 ia->ia_io[0].ir_addr + ia->ia_io[0].ir_size - 1)); 523 return; 524 } 525 526 esc->sc_regt = ia->ia_iot; 527 esc->sc_regh = ioh; 528 529 if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, 530 ia->ia_iomem[0].ir_size, 0, &memh) != 0) { 531 532 DPRINTF(("\n%s: can't map iomem space 0x%x-0x%x\n", 533 device_xname(self), ia->ia_iomem[0].ir_addr, 534 ia->ia_iomem[0].ir_addr + ia->ia_iomem[0].ir_size 535 - 1)); 536 bus_space_unmap(ia->ia_iot, ioh, ia->ia_io[0].ir_size); 537 return; 538 } 539 540 sc->bt = ia->ia_memt; 541 sc->bh = memh; 542 543 sc->sc_msize = ia->ia_iomem[0].ir_size; 544 sc->sc_maddr = (void *)memh; 545 sc->sc_iobase = (char *)sc->sc_maddr + sc->sc_msize - (1 << 24); 546 547 /* Set up pointers to important on-card control structures */ 548 sc->iscp = 0; 549 sc->scb = IE_ISCP_SZ; 550 sc->scp = sc->sc_msize + IE_SCP_ADDR - (1 << 24); 551 552 sc->buf_area = sc->scb + IE_SCB_SZ; 553 sc->buf_area_sz = sc->sc_msize - IE_ISCP_SZ - IE_SCB_SZ - IE_SCP_SZ; 554 555 /* Zero card memory */ 556 bus_space_set_region_1(sc->bt, sc->bh, 0, 0, sc->sc_msize); 557 558 /* Set card to 16-bit bus mode */ 559 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 560 IE_SYSBUS_16BIT); 561 562 /* Set up pointers to key structures */ 563 ef_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long)sc->iscp); 564 ef_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long)sc->scb); 565 ef_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long)sc->iscp); 566 567 /* flush setup of pointers, check if chip answers */ 568 if (!i82586_proberam(sc)) { 569 DPRINTF(("\n%s: can't talk to i82586!\n", 570 device_xname(self))); 571 bus_space_unmap(ia->ia_iot, ioh, ia->ia_io[0].ir_size); 572 bus_space_unmap(ia->ia_memt, memh, ia->ia_iomem[0].ir_size); 573 return; 574 } 575 576 /* Set bank 2 for card part number and revision */ 577 bus_space_write_1(esc->sc_regt, esc->sc_regh, EF_CTRL, 578 EF_CTRL_NRST | EF_CTRL_BNK2); 579 580 /* The card revision is encoded in BCD */ 581 i = bus_space_read_1(esc->sc_regt, esc->sc_regh, EF_REV); 582 esc->card_rev = 10 * (i / 16) + (i % 16); 583 584 for (i = 0; i < EF_TYPE_LEN; i++) 585 partno[i] = bus_space_read_1(esc->sc_regt, esc->sc_regh, 586 EF_TYPE + i); 587 588 /* Use part number to guess if card is TP or AUI/BNC model */ 589 esc->card_type = EF_IS_TP(partno) ? EF_CARD_TP : EF_CARD_BNC; 590 591 /* Set bank 0 for ethernet address */ 592 bus_space_write_1(esc->sc_regt, esc->sc_regh, 593 EF_CTRL, EF_CTRL_NORMAL); 594 595 for (i = 0; i < EF_ADDR_LEN; i++) 596 ethaddr[i] = bus_space_read_1(esc->sc_regt, esc->sc_regh, 597 EF_ADDR + i); 598 599 snprintf(vers, sizeof(vers), "%s, rev. %d", 600 (esc->card_type == EF_CARD_TP) ? "3C507-TP" : "3C507", 601 esc->card_rev); 602 603 if (esc->card_type == EF_CARD_TP) 604 i82586_attach(sc, vers, ethaddr, eftp_media, NEFTP_MEDIA, 605 eftp_media[0]); 606 else { 607 uint8_t media = bus_space_read_1(esc->sc_regt, esc->sc_regh, 608 EF_MEDIA); 609 media = (media & EF_MEDIA_MASK) >> EF_MEDIA_SHIFT; 610 611 i82586_attach(sc, vers, ethaddr, ef_media, NEF_MEDIA, 612 ef_media[media]); 613 } 614 615 /* Clear the interrupt latch just in case. */ 616 bus_space_write_1(esc->sc_regt, esc->sc_regh, EF_ICTRL, 1); 617 618 esc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 619 IST_EDGE, IPL_NET, i82586_intr, sc); 620 if (esc->sc_ih == NULL) { 621 DPRINTF(("\n%s: can't establish interrupt\n", 622 device_xname(self))); 623 } 624 } 625 626 static int 627 ef_port_check(bus_space_tag_t iot, bus_space_handle_t ioh) 628 { 629 int i; 630 u_char ch; 631 const u_char *signature = EF_SIGNATURE; 632 633 for (i = 0; i < strlen(signature); i++) { 634 ch = bus_space_read_1(iot, ioh, i); 635 if (ch != signature[i]) 636 return 0; 637 } 638 639 /* If card is mapped in high memory (above 15Meg), we can't use it */ 640 ch = bus_space_read_1(iot, ioh, EF_MADDR); 641 if (ch & EF_MADDR_HIGH) 642 return 0; /* XXX: maybe we should panic?? */ 643 644 return 1; 645 } 646 647 CFATTACH_DECL_NEW(ef, sizeof(struct ef_softc), 648 ef_match, ef_attach, NULL, NULL); 649
Indexes created Sat Sep 20 22:09:52 GMT 2025