if_ix.c revision 1.3
1 /* $NetBSD: if_ix.c,v 1.3 1998/03/03 20:51:20 pk Exp $ */ 2 /* $Id: if_ix.c,v 1.3 1998/03/03 20:51:20 pk Exp $ */ 3 4 /*- 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Rafal K. Boni. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/mbuf.h> 43 #include <sys/errno.h> 44 #include <sys/device.h> 45 #include <sys/protosw.h> 46 #include <sys/socket.h> 47 48 #include <net/if.h> 49 #include <net/if_dl.h> 50 #include <net/if_types.h> 51 #include <net/if_media.h> 52 #include <net/if_ether.h> 53 54 #include <vm/vm.h> 55 56 #include <machine/cpu.h> 57 #include <machine/bus.h> 58 #include <machine/intr.h> 59 60 #include <dev/isa/isareg.h> 61 #include <dev/isa/isavar.h> 62 63 #include <dev/ic/i82586reg.h> 64 #include <dev/ic/i82586var.h> 65 #include <dev/isa/if_ixreg.h> 66 67 #ifdef IX_DEBUG 68 #define DPRINTF(x) printf x 69 #else 70 #define DPRINTF(x) 71 #endif 72 73 int ix_media[] = { 74 IFM_ETHER | IFM_10_5, 75 IFM_ETHER | IFM_10_2, 76 IFM_ETHER | IFM_10_T, 77 }; 78 #define NIX_MEDIA (sizeof(ix_media) / sizeof(ix_media[0])) 79 80 struct ix_softc { 81 struct ie_softc sc_ie; 82 83 bus_space_tag_t sc_regt; /* space tag for registers */ 84 bus_space_handle_t sc_regh; /* space handle for registers */ 85 86 u_int16_t irq_encoded; /* encoded IRQ */ 87 void *sc_ih; /* interrupt handle */ 88 }; 89 90 static void ix_reset __P((struct ie_softc *, int)); 91 static void ix_atten __P((struct ie_softc *)); 92 static int ix_intrhook __P((struct ie_softc *, int)); 93 94 static void ix_copyin __P((struct ie_softc *, void *, int, size_t)); 95 static void ix_copyout __P((struct ie_softc *, const void *, int, size_t)); 96 97 static u_int16_t ix_read_16 __P((struct ie_softc *, int)); 98 static void ix_write_16 __P((struct ie_softc *, int, u_int16_t)); 99 static void ix_write_24 __P((struct ie_softc *, int, int)); 100 101 static void ix_mediastatus __P((struct ie_softc *, struct ifmediareq *)); 102 103 static u_int16_t ix_read_eeprom __P((bus_space_tag_t, bus_space_handle_t, int)); 104 static void ix_eeprom_outbits __P((bus_space_tag_t, bus_space_handle_t, int, int)); 105 static int ix_eeprom_inbits __P((bus_space_tag_t, bus_space_handle_t)); 106 static void ix_eeprom_clock __P((bus_space_tag_t, bus_space_handle_t, int)); 107 108 #ifdef __BROKEN_INDIRECT_CONFIG 109 int ix_match __P((struct device *, void*, void *)); 110 #else 111 int ix_match __P((struct device *, struct cfdata *, void *)); 112 #endif 113 void ix_attach __P((struct device *, struct device *, void *)); 114 115 /* 116 * EtherExpress/16 support routines 117 */ 118 static void 119 ix_reset(sc, why) 120 struct ie_softc *sc; 121 int why; 122 { 123 struct ix_softc* isc = (struct ix_softc *) sc; 124 125 switch (why) { 126 case CHIP_PROBE: 127 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_ECTRL, 128 IX_RESET_586); 129 delay(100); 130 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_ECTRL, 0); 131 delay(100); 132 break; 133 134 case CARD_RESET: 135 break; 136 } 137 } 138 139 static void 140 ix_atten(sc) 141 struct ie_softc *sc; 142 { 143 struct ix_softc* isc = (struct ix_softc *) sc; 144 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_ATTN, 0); 145 } 146 147 static u_int16_t 148 ix_read_eeprom(iot, ioh, location) 149 bus_space_tag_t iot; 150 bus_space_handle_t ioh; 151 int location; 152 { 153 int ectrl, edata; 154 155 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 156 ectrl &= IX_ECTRL_MASK; 157 ectrl |= IX_ECTRL_EECS; 158 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 159 160 ix_eeprom_outbits(iot, ioh, IX_EEPROM_READ, IX_EEPROM_OPSIZE1); 161 ix_eeprom_outbits(iot, ioh, location, IX_EEPROM_ADDR_SIZE); 162 edata = ix_eeprom_inbits(iot, ioh); 163 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 164 ectrl &= ~(IX_RESET_ASIC | IX_ECTRL_EEDI | IX_ECTRL_EECS); 165 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 166 ix_eeprom_clock(iot, ioh, 1); 167 ix_eeprom_clock(iot, ioh, 0); 168 return (edata); 169 } 170 171 static void 172 ix_eeprom_outbits(iot, ioh, edata, count) 173 bus_space_tag_t iot; 174 bus_space_handle_t ioh; 175 int edata, count; 176 { 177 int ectrl, i; 178 179 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 180 ectrl &= ~IX_RESET_ASIC; 181 for (i = count - 1; i >= 0; i--) { 182 ectrl &= ~IX_ECTRL_EEDI; 183 if (edata & (1 << i)) { 184 ectrl |= IX_ECTRL_EEDI; 185 } 186 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 187 delay(1); /* eeprom data must be setup for 0.4 uSec */ 188 ix_eeprom_clock(iot, ioh, 1); 189 ix_eeprom_clock(iot, ioh, 0); 190 } 191 ectrl &= ~IX_ECTRL_EEDI; 192 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 193 delay(1); /* eeprom data must be held for 0.4 uSec */ 194 } 195 196 static int 197 ix_eeprom_inbits(iot, ioh) 198 bus_space_tag_t iot; 199 bus_space_handle_t ioh; 200 { 201 int ectrl, edata, i; 202 203 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 204 ectrl &= ~IX_RESET_ASIC; 205 for (edata = 0, i = 0; i < 16; i++) { 206 edata = edata << 1; 207 ix_eeprom_clock(iot, ioh, 1); 208 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 209 if (ectrl & IX_ECTRL_EEDO) { 210 edata |= 1; 211 } 212 ix_eeprom_clock(iot, ioh, 0); 213 } 214 return (edata); 215 } 216 217 static void 218 ix_eeprom_clock(iot, ioh, state) 219 bus_space_tag_t iot; 220 bus_space_handle_t ioh; 221 int state; 222 { 223 int ectrl; 224 225 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 226 ectrl &= ~(IX_RESET_ASIC | IX_ECTRL_EESK); 227 if (state) { 228 ectrl |= IX_ECTRL_EESK; 229 } 230 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 231 delay(9); /* EESK must be stable for 8.38 uSec */ 232 } 233 234 static int 235 ix_intrhook(sc, where) 236 struct ie_softc *sc; 237 int where; 238 { 239 struct ix_softc* isc = (struct ix_softc *) sc; 240 241 switch (where) { 242 case INTR_ENTER: 243 /* entering ISR: disable card interrupts */ 244 bus_space_write_1(isc->sc_regt, isc->sc_regh, 245 IX_IRQ, isc->irq_encoded); 246 break; 247 248 case INTR_EXIT: 249 /* exiting ISR: re-enable card interrupts */ 250 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_IRQ, 251 isc->irq_encoded | IX_IRQ_ENABLE); 252 break; 253 } 254 255 return 1; 256 } 257 258 259 static void 260 ix_copyin (sc, dst, offset, size) 261 struct ie_softc *sc; 262 void *dst; 263 int offset; 264 size_t size; 265 { 266 int dribble; 267 u_int8_t* bptr = dst; 268 269 bus_space_barrier(sc->bt, sc->bh, offset, size, 270 BUS_SPACE_BARRIER_READ); 271 272 if (offset % 2) { 273 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 274 offset++; bptr++; size--; 275 } 276 277 dribble = size % 2; 278 bus_space_read_region_2(sc->bt, sc->bh, offset, (u_int16_t *) bptr, 279 size >> 1); 280 281 if (dribble) { 282 bptr += size - 1; 283 offset += size - 1; 284 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 285 } 286 } 287 288 static void 289 ix_copyout (sc, src, offset, size) 290 struct ie_softc *sc; 291 const void *src; 292 int offset; 293 size_t size; 294 { 295 int dribble; 296 int osize = size; 297 int ooffset = offset; 298 const u_int8_t* bptr = src; 299 300 if (offset % 2) { 301 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 302 offset++; bptr++; size--; 303 } 304 305 dribble = size % 2; 306 bus_space_write_region_2(sc->bt, sc->bh, offset, (u_int16_t *)bptr, 307 size >> 1); 308 if (dribble) { 309 bptr += size - 1; 310 offset += size - 1; 311 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 312 } 313 314 bus_space_barrier(sc->bt, sc->bh, ooffset, osize, 315 BUS_SPACE_BARRIER_WRITE); 316 } 317 318 static u_int16_t 319 ix_read_16 (sc, offset) 320 struct ie_softc *sc; 321 int offset; 322 { 323 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_READ); 324 return bus_space_read_2(sc->bt, sc->bh, offset); 325 } 326 327 static void 328 ix_write_16 (sc, offset, value) 329 struct ie_softc *sc; 330 int offset; 331 u_int16_t value; 332 { 333 bus_space_write_2(sc->bt, sc->bh, offset, value); 334 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_WRITE); 335 } 336 337 static void 338 ix_write_24 (sc, offset, addr) 339 struct ie_softc *sc; 340 int offset, addr; 341 { 342 bus_space_write_4(sc->bt, sc->bh, offset, addr + 343 (u_long) sc->sc_maddr - (u_long) sc->sc_iobase); 344 bus_space_barrier(sc->bt, sc->bh, offset, 4, BUS_SPACE_BARRIER_WRITE); 345 } 346 347 static void 348 ix_mediastatus(sc, ifmr) 349 struct ie_softc *sc; 350 struct ifmediareq *ifmr; 351 { 352 struct ifmedia *ifm = &sc->sc_media; 353 354 /* 355 * The currently selected media is always the active media. 356 */ 357 ifmr->ifm_active = ifm->ifm_cur->ifm_media; 358 } 359 360 int 361 ix_match(parent, cf, aux) 362 struct device *parent; 363 #ifdef __BROKEN_INDIRECT_CONFIG 364 void *cf; 365 #else 366 struct cfdata *cf; 367 #endif 368 void *aux; 369 { 370 int i; 371 int rv = 0; 372 bus_addr_t maddr; 373 bus_size_t msize; 374 u_short checksum = 0; 375 bus_space_handle_t ioh; 376 bus_space_tag_t iot; 377 u_int8_t val, bart_config; 378 u_short pg, adjust, decode, edecode; 379 u_short board_id, id_var1, id_var2, irq, irq_encoded; 380 struct isa_attach_args * const ia = aux; 381 short irq_translate[] = {0, 0x09, 0x03, 0x04, 0x05, 0x0a, 0x0b, 0}; 382 383 iot = ia->ia_iot; 384 385 if (bus_space_map(iot, ia->ia_iobase, 386 IX_IOSIZE, 0, &ioh) != 0) { 387 DPRINTF(("Can't map io space at 0x%x\n", ia->ia_iobase)); 388 return (0); 389 } 390 391 /* XXX: reset any ee16 at the current iobase */ 392 bus_space_write_1(iot, ioh, IX_ECTRL, IX_RESET_ASIC); 393 bus_space_write_1(iot, ioh, IX_ECTRL, 0); 394 delay(240); 395 396 /* now look for ee16. */ 397 board_id = id_var1 = id_var2 = 0; 398 for (i = 0; i < 4 ; i++) { 399 id_var1 = bus_space_read_1(iot, ioh, IX_ID_PORT); 400 id_var2 = ((id_var1 & 0x03) << 2); 401 board_id |= (( id_var1 >> 4) << id_var2); 402 } 403 404 if (board_id != IX_ID) { 405 DPRINTF(("BART ID mismatch (got 0x%04x, expected 0x%04x)\n", 406 board_id, IX_ID)); 407 goto out; 408 } 409 410 /* 411 * The shared RAM size and location of the EE16 is encoded into 412 * EEPROM location 6. The location of the first set bit tells us 413 * the memory address (0xc0000 + (0x4000 * FSB)), where FSB is the 414 * number of the first set bit. The zeroes are then shifted out, 415 * and the results is the memory size (1 = 16k, 3 = 32k, 7 = 48k, 416 * 0x0f = 64k). 417 * 418 * Examples: 419 * 0x3c -> 64k@0xc8000, 0x70 -> 48k@0xd0000, 0xc0 -> 32k@0xd8000 420 * 0x80 -> 16k@0xdc000. 421 * 422 * Side note: this comes from reading the old driver rather than 423 * from a more definitive source, so it could be out-of-whack 424 * with what the card can do... 425 */ 426 427 val = ix_read_eeprom(iot, ioh, 6) & 0xff; 428 DPRINTF(("memory config: 0x%02x\n", val)); 429 430 for(i = 0; i < 8; i++) { 431 if (val & 1) 432 break; 433 val = val >> 1; 434 } 435 436 if (i == 8) { 437 DPRINTF(("Invalid or unsupported memory config\n")); 438 goto out; 439 } 440 441 maddr = 0xc0000 + (i * 0x4000); 442 443 switch (val) { 444 case 0x01: 445 msize = 16 * 1024; 446 break; 447 448 case 0x03: 449 msize = 32 * 1024; 450 break; 451 452 case 0x07: 453 msize = 48 * 1024; 454 break; 455 456 case 0x0f: 457 msize = 64 * 1024; 458 break; 459 460 default: 461 DPRINTF(("invalid memory size %02x\n", val)); 462 goto out; 463 } 464 465 if (ia->ia_maddr == ISACF_IOMEM_DEFAULT) 466 ia->ia_maddr = maddr; 467 else if (ia->ia_maddr != maddr) { 468 DPRINTF(( 469 "ix_match: memaddr of board @ 0x%x doesn't match config\n", 470 ia->ia_iobase)); 471 goto out; 472 } 473 474 if (ia->ia_msize == ISACF_IOSIZ_DEFAULT) 475 ia->ia_msize = msize; 476 else if (ia->ia_msize != msize) { 477 DPRINTF(( 478 "ix_match: memsize of board @ 0x%x doesn't match config\n", 479 ia->ia_iobase)); 480 goto out; 481 } 482 483 DPRINTF(("found %d byte memory region at %x\n", 484 ia->ia_msize, ia->ia_maddr)); 485 486 /* need to put the 586 in RESET, and leave it */ 487 bus_space_write_1(iot, ioh, IX_ECTRL, IX_RESET_586); 488 489 /* read the eeprom and checksum it, should == IX_ID */ 490 for(i = 0; i < 0x40; i++) 491 checksum += ix_read_eeprom(iot, ioh, i); 492 493 if (checksum != IX_ID) { 494 DPRINTF(("checksum mismatch (got 0x%04x, expected 0x%04x\n", 495 checksum, IX_ID)); 496 goto out; 497 } 498 499 /* 500 * Size and test the memory on the board. The size of the memory 501 * can be one of 16k, 32k, 48k or 64k. It can be located in the 502 * address range 0xC0000 to 0xEFFFF on 16k boundaries. 503 */ 504 pg = (ia->ia_maddr & 0x3C000) >> 14; 505 adjust = IX_MCTRL_FMCS16 | (pg & 0x3) << 2; 506 decode = ((1 << (ia->ia_msize / 16384)) - 1) << pg; 507 edecode = ((~decode >> 4) & 0xF0) | (decode >> 8); 508 509 /* ZZZ This should be checked against eeprom location 6, low byte */ 510 bus_space_write_1(iot, ioh, IX_MEMDEC, decode & 0xFF); 511 512 /* ZZZ This should be checked against eeprom location 1, low byte */ 513 bus_space_write_1(iot, ioh, IX_MCTRL, adjust); 514 515 /* ZZZ Now if I could find this one I would have it made */ 516 bus_space_write_1(iot, ioh, IX_MPCTRL, (~decode & 0xFF)); 517 518 /* ZZZ I think this is location 6, high byte */ 519 bus_space_write_1(iot, ioh, IX_MECTRL, edecode); /*XXX disable Exxx */ 520 521 /* 522 * Get the encoded interrupt number from the EEPROM, check it 523 * against the passed in IRQ. Issue a warning if they do not 524 * match, and fail the probe. If irq is 'IRQUNK' then we 525 * use the EEPROM irq, and continue. 526 */ 527 irq_encoded = ix_read_eeprom(iot, ioh, IX_EEPROM_CONFIG1); 528 irq_encoded = (irq_encoded & IX_EEPROM_IRQ) >> IX_EEPROM_IRQ_SHIFT; 529 irq = irq_translate[irq_encoded]; 530 if (ia->ia_irq == ISACF_IRQ_DEFAULT) 531 ia->ia_irq = irq; 532 else if (irq != ia->ia_irq) { 533 DPRINTF(("board IRQ %d does not match config\n", irq)); 534 goto out; 535 } 536 537 /* disable the board interrupts */ 538 bus_space_write_1(iot, ioh, IX_IRQ, irq_encoded); 539 540 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 541 bart_config |= IX_BART_LOOPBACK; 542 bart_config |= IX_BART_MCS16_TEST; /* inb doesn't get bit! */ 543 bus_space_write_1(iot, ioh, IX_CONFIG, bart_config); 544 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 545 546 bus_space_write_1(iot, ioh, IX_ECTRL, 0); 547 delay(100); 548 549 rv = 1; 550 ia->ia_iosize = IX_IOSIZE; 551 DPRINTF(("ix_match: found board @ 0x%x\n", ia->ia_iobase)); 552 553 out: 554 bus_space_unmap(iot, ioh, IX_IOSIZE); 555 return (rv); 556 } 557 558 void 559 ix_attach(parent, self, aux) 560 struct device *parent; 561 struct device *self; 562 void *aux; 563 { 564 struct ix_softc *isc = (void *)self; 565 struct ie_softc *sc = &isc->sc_ie; 566 struct isa_attach_args *ia = aux; 567 568 int media; 569 u_short eaddrtemp; 570 u_int8_t bart_config; 571 bus_space_tag_t iot; 572 bus_space_handle_t ioh, memh; 573 u_short irq_encoded; 574 u_int8_t ethaddr[ETHER_ADDR_LEN]; 575 576 iot = ia->ia_iot; 577 578 if (bus_space_map(iot, ia->ia_iobase, 579 ia->ia_iosize, 0, &ioh) != 0) { 580 581 DPRINTF(("\n%s: can't map i/o space 0x%x-0x%x\n", 582 sc->sc_dev.dv_xname, ia->ia_iobase, 583 ia->ia_iobase + ia->ia_iosize - 1)); 584 return; 585 } 586 587 if (bus_space_map(ia->ia_memt, ia->ia_maddr, 588 ia->ia_msize, 0, &memh) != 0) { 589 590 DPRINTF(("\n%s: can't map iomem space 0x%x-0x%x\n", 591 sc->sc_dev.dv_xname, ia->ia_maddr, 592 ia->ia_maddr + ia->ia_msize - 1)); 593 bus_space_unmap(iot, ioh, ia->ia_iosize); 594 return; 595 } 596 597 isc->sc_regt = iot; 598 isc->sc_regh = ioh; 599 600 /* 601 * Get the hardware ethernet address from the EEPROM and 602 * save it in the softc for use by the 586 setup code. 603 */ 604 eaddrtemp = ix_read_eeprom(iot, ioh, IX_EEPROM_ENET_HIGH); 605 ethaddr[1] = eaddrtemp & 0xFF; 606 ethaddr[0] = eaddrtemp >> 8; 607 eaddrtemp = ix_read_eeprom(iot, ioh, IX_EEPROM_ENET_MID); 608 ethaddr[3] = eaddrtemp & 0xFF; 609 ethaddr[2] = eaddrtemp >> 8; 610 eaddrtemp = ix_read_eeprom(iot, ioh, IX_EEPROM_ENET_LOW); 611 ethaddr[5] = eaddrtemp & 0xFF; 612 ethaddr[4] = eaddrtemp >> 8; 613 614 sc->hwinit = NULL; 615 sc->hwreset = ix_reset; 616 sc->chan_attn = ix_atten; 617 sc->intrhook = ix_intrhook; 618 619 sc->memcopyin = ix_copyin; 620 sc->memcopyout = ix_copyout; 621 sc->ie_bus_read16 = ix_read_16; 622 sc->ie_bus_write16 = ix_write_16; 623 sc->ie_bus_write24 = ix_write_24; 624 625 sc->do_xmitnopchain = 0; 626 627 sc->sc_mediachange = NULL; 628 sc->sc_mediastatus = ix_mediastatus; 629 630 sc->bt = ia->ia_memt; 631 sc->bh = memh; 632 633 /* Map i/o space. */ 634 sc->sc_msize = ia->ia_msize; 635 sc->sc_maddr = (void* ) memh; 636 sc->sc_iobase = sc->sc_maddr + sc->sc_msize - (1 << 24); 637 638 /* set up pointers to important on-card control structures */ 639 sc->iscp = 0; 640 sc->scb = IE_ISCP_SZ; 641 sc->scp = sc->sc_msize + IE_SCP_ADDR - (1 << 24); 642 643 sc->buf_area = sc->scb + IE_SCB_SZ; 644 sc->buf_area_sz = sc->sc_msize - IE_ISCP_SZ - IE_SCB_SZ - IE_SCP_SZ; 645 646 /* zero card memory */ 647 bus_space_set_region_1(sc->bt, sc->bh, 0, 0, 32); 648 bus_space_set_region_1(sc->bt, sc->bh, 0, 0, sc->sc_msize); 649 650 /* set card to 16-bit bus mode */ 651 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 0); 652 653 /* set up pointers to key structures */ 654 ix_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp); 655 ix_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb); 656 ix_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp); 657 658 /* flush setup of pointers, check if chip answers */ 659 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 660 BUS_SPACE_BARRIER_WRITE); 661 if (!i82586_proberam(sc)) { 662 DPRINTF(("\n%s: Can't talk to i82586!\n", 663 sc->sc_dev.dv_xname)); 664 bus_space_unmap(iot, ioh, ia->ia_iosize); 665 bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); 666 return; 667 } 668 669 /* Figure out which media is being used... */ 670 if (ix_read_eeprom(iot, ioh, IX_EEPROM_CONFIG1) & 671 IX_EEPROM_MEDIA_EXT) { 672 if (ix_read_eeprom(iot, ioh, IX_EEPROM_MEDIA) & 673 IX_EEPROM_MEDIA_TP) 674 media = IFM_ETHER | IFM_10_T; 675 else 676 media = IFM_ETHER | IFM_10_2; 677 } else 678 media = IFM_ETHER | IFM_10_5; 679 680 /* Take the card out of lookback */ 681 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 682 bart_config &= ~IX_BART_LOOPBACK; 683 bart_config |= IX_BART_MCS16_TEST; /* inb doesn't get bit! */ 684 bus_space_write_1(iot, ioh, IX_CONFIG, bart_config); 685 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 686 687 irq_encoded = ix_read_eeprom(iot, ioh, 688 IX_EEPROM_CONFIG1); 689 irq_encoded = (irq_encoded & IX_EEPROM_IRQ) >> IX_EEPROM_IRQ_SHIFT; 690 691 /* Enable interrupts */ 692 bus_space_write_1(iot, ioh, IX_IRQ, 693 irq_encoded | IX_IRQ_ENABLE); 694 695 isc->irq_encoded = irq_encoded; 696 697 i82586_attach(sc, "EtherExpress/16", ethaddr, 698 ix_media, NIX_MEDIA, media); 699 700 isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 701 IPL_NET, i82586_intr, sc); 702 if (isc->sc_ih == NULL) 703 DPRINTF(("\n%s: can't establish interrupt\n", 704 sc->sc_dev.dv_xname)); 705 } 706 707 struct cfattach ix_ca = { 708 sizeof(struct ix_softc), ix_match, ix_attach 709 }; 710
Indexes created Mon Sep 29 21:09:56 GMT 2025