if_ix.c revision 1.10
1 /* $NetBSD: if_ix.c,v 1.10 2001/11/13 08:01:19 lukem 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: if_ix.c,v 1.10 2001/11/13 08:01:19 lukem Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/mbuf.h> 45 #include <sys/errno.h> 46 #include <sys/device.h> 47 #include <sys/protosw.h> 48 #include <sys/socket.h> 49 50 #include <net/if.h> 51 #include <net/if_dl.h> 52 #include <net/if_types.h> 53 #include <net/if_media.h> 54 #include <net/if_ether.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_int8_t use_pio; /* use PIO rather than shared mem */ 87 u_int16_t irq_encoded; /* encoded IRQ */ 88 void *sc_ih; /* interrupt handle */ 89 }; 90 91 static void ix_reset __P((struct ie_softc *, int)); 92 static void ix_atten __P((struct ie_softc *, int)); 93 static int ix_intrhook __P((struct ie_softc *, int)); 94 95 static void ix_copyin __P((struct ie_softc *, void *, int, size_t)); 96 static void ix_copyout __P((struct ie_softc *, const void *, int, size_t)); 97 98 static void ix_bus_barrier __P((struct ie_softc *, int, int, int)); 99 100 static u_int16_t ix_read_16 __P((struct ie_softc *, int)); 101 static void ix_write_16 __P((struct ie_softc *, int, u_int16_t)); 102 static void ix_write_24 __P((struct ie_softc *, int, int)); 103 static void ix_zeromem __P((struct ie_softc *, int, int)); 104 105 static void ix_mediastatus __P((struct ie_softc *, struct ifmediareq *)); 106 107 static u_int16_t ix_read_eeprom __P((bus_space_tag_t, bus_space_handle_t, int)); 108 static void ix_eeprom_outbits __P((bus_space_tag_t, bus_space_handle_t, int, int)); 109 static int ix_eeprom_inbits __P((bus_space_tag_t, bus_space_handle_t)); 110 static void ix_eeprom_clock __P((bus_space_tag_t, bus_space_handle_t, int)); 111 112 int ix_match __P((struct device *, struct cfdata *, void *)); 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, why) 141 struct ie_softc *sc; 142 int why; 143 { 144 struct ix_softc* isc = (struct ix_softc *) sc; 145 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_ATTN, 0); 146 } 147 148 static u_int16_t 149 ix_read_eeprom(iot, ioh, location) 150 bus_space_tag_t iot; 151 bus_space_handle_t ioh; 152 int location; 153 { 154 int ectrl, edata; 155 156 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 157 ectrl &= IX_ECTRL_MASK; 158 ectrl |= IX_ECTRL_EECS; 159 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 160 161 ix_eeprom_outbits(iot, ioh, IX_EEPROM_READ, IX_EEPROM_OPSIZE1); 162 ix_eeprom_outbits(iot, ioh, location, IX_EEPROM_ADDR_SIZE); 163 edata = ix_eeprom_inbits(iot, ioh); 164 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 165 ectrl &= ~(IX_RESET_ASIC | IX_ECTRL_EEDI | IX_ECTRL_EECS); 166 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 167 ix_eeprom_clock(iot, ioh, 1); 168 ix_eeprom_clock(iot, ioh, 0); 169 return (edata); 170 } 171 172 static void 173 ix_eeprom_outbits(iot, ioh, edata, count) 174 bus_space_tag_t iot; 175 bus_space_handle_t ioh; 176 int edata, count; 177 { 178 int ectrl, i; 179 180 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 181 ectrl &= ~IX_RESET_ASIC; 182 for (i = count - 1; i >= 0; i--) { 183 ectrl &= ~IX_ECTRL_EEDI; 184 if (edata & (1 << i)) { 185 ectrl |= IX_ECTRL_EEDI; 186 } 187 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 188 delay(1); /* eeprom data must be setup for 0.4 uSec */ 189 ix_eeprom_clock(iot, ioh, 1); 190 ix_eeprom_clock(iot, ioh, 0); 191 } 192 ectrl &= ~IX_ECTRL_EEDI; 193 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 194 delay(1); /* eeprom data must be held for 0.4 uSec */ 195 } 196 197 static int 198 ix_eeprom_inbits(iot, ioh) 199 bus_space_tag_t iot; 200 bus_space_handle_t ioh; 201 { 202 int ectrl, edata, i; 203 204 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 205 ectrl &= ~IX_RESET_ASIC; 206 for (edata = 0, i = 0; i < 16; i++) { 207 edata = edata << 1; 208 ix_eeprom_clock(iot, ioh, 1); 209 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 210 if (ectrl & IX_ECTRL_EEDO) { 211 edata |= 1; 212 } 213 ix_eeprom_clock(iot, ioh, 0); 214 } 215 return (edata); 216 } 217 218 static void 219 ix_eeprom_clock(iot, ioh, state) 220 bus_space_tag_t iot; 221 bus_space_handle_t ioh; 222 int state; 223 { 224 int ectrl; 225 226 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 227 ectrl &= ~(IX_RESET_ASIC | IX_ECTRL_EESK); 228 if (state) { 229 ectrl |= IX_ECTRL_EESK; 230 } 231 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 232 delay(9); /* EESK must be stable for 8.38 uSec */ 233 } 234 235 static int 236 ix_intrhook(sc, where) 237 struct ie_softc *sc; 238 int where; 239 { 240 struct ix_softc* isc = (struct ix_softc *) sc; 241 242 switch (where) { 243 case INTR_ENTER: 244 /* entering ISR: disable card interrupts */ 245 bus_space_write_1(isc->sc_regt, isc->sc_regh, 246 IX_IRQ, isc->irq_encoded); 247 break; 248 249 case INTR_EXIT: 250 /* exiting ISR: re-enable card interrupts */ 251 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_IRQ, 252 isc->irq_encoded | IX_IRQ_ENABLE); 253 break; 254 } 255 256 return 1; 257 } 258 259 260 static void 261 ix_copyin (sc, dst, offset, size) 262 struct ie_softc *sc; 263 void *dst; 264 int offset; 265 size_t size; 266 { 267 int i, dribble; 268 u_int8_t* bptr = dst; 269 u_int16_t* wptr = dst; 270 struct ix_softc* isc = (struct ix_softc *) sc; 271 272 if (isc->use_pio) { 273 /* Reset read pointer to the specified offset */ 274 bus_space_barrier(sc->bt, sc->bh, IX_DATAPORT, 2, 275 BUS_SPACE_BARRIER_READ); 276 bus_space_write_2(sc->bt, sc->bh, IX_READPTR, offset); 277 bus_space_barrier(sc->bt, sc->bh, IX_READPTR, 2, 278 BUS_SPACE_BARRIER_WRITE); 279 } else { 280 bus_space_barrier(sc->bt, sc->bh, offset, size, 281 BUS_SPACE_BARRIER_READ); 282 } 283 284 if (offset % 2) { 285 if (isc->use_pio) 286 *bptr = bus_space_read_1(sc->bt, sc->bh, IX_DATAPORT); 287 else 288 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 289 offset++; bptr++; size--; 290 } 291 292 dribble = size % 2; 293 wptr = (u_int16_t*) bptr; 294 295 if (isc->use_pio) { 296 for(i = 0; i < size / 2; i++) { 297 *wptr = bus_space_read_2(sc->bt, sc->bh, IX_DATAPORT); 298 wptr++; 299 } 300 } else { 301 bus_space_read_region_2(sc->bt, sc->bh, offset, 302 (u_int16_t *) bptr, size / 2); 303 } 304 305 if (dribble) { 306 bptr += size - 1; 307 offset += size - 1; 308 309 if (isc->use_pio) 310 *bptr = bus_space_read_1(sc->bt, sc->bh, IX_DATAPORT); 311 else 312 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 313 } 314 } 315 316 static void 317 ix_copyout (sc, src, offset, size) 318 struct ie_softc *sc; 319 const void *src; 320 int offset; 321 size_t size; 322 { 323 int i, dribble; 324 int osize = size; 325 int ooffset = offset; 326 const u_int8_t* bptr = src; 327 const u_int16_t* wptr = src; 328 struct ix_softc* isc = (struct ix_softc *) sc; 329 330 if (isc->use_pio) { 331 /* Reset write pointer to the specified offset */ 332 bus_space_write_2(sc->bt, sc->bh, IX_WRITEPTR, offset); 333 bus_space_barrier(sc->bt, sc->bh, IX_WRITEPTR, 2, 334 BUS_SPACE_BARRIER_WRITE); 335 } 336 337 if (offset % 2) { 338 if (isc->use_pio) 339 bus_space_write_1(sc->bt, sc->bh, IX_DATAPORT, *bptr); 340 else 341 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 342 offset++; bptr++; size--; 343 } 344 345 dribble = size % 2; 346 wptr = (u_int16_t*) bptr; 347 348 if (isc->use_pio) { 349 for(i = 0; i < size / 2; i++) { 350 bus_space_write_2(sc->bt, sc->bh, IX_DATAPORT, *wptr); 351 wptr++; 352 } 353 } else { 354 bus_space_write_region_2(sc->bt, sc->bh, offset, 355 (u_int16_t *)bptr, size / 2); 356 } 357 358 if (dribble) { 359 bptr += size - 1; 360 offset += size - 1; 361 362 if (isc->use_pio) 363 bus_space_write_1(sc->bt, sc->bh, IX_DATAPORT, *bptr); 364 else 365 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 366 } 367 368 if (isc->use_pio) 369 bus_space_barrier(sc->bt, sc->bh, IX_DATAPORT, 2, 370 BUS_SPACE_BARRIER_WRITE); 371 else 372 bus_space_barrier(sc->bt, sc->bh, ooffset, osize, 373 BUS_SPACE_BARRIER_WRITE); 374 } 375 376 static void 377 ix_bus_barrier(sc, offset, length, flags) 378 struct ie_softc *sc; 379 int offset, length, flags; 380 { 381 struct ix_softc* isc = (struct ix_softc *) sc; 382 383 if (isc->use_pio) 384 bus_space_barrier(sc->bt, sc->bh, IX_DATAPORT, 2, flags); 385 else 386 bus_space_barrier(sc->bt, sc->bh, offset, length, flags); 387 } 388 389 static u_int16_t 390 ix_read_16 (sc, offset) 391 struct ie_softc *sc; 392 int offset; 393 { 394 struct ix_softc* isc = (struct ix_softc *) sc; 395 396 if (isc->use_pio) { 397 bus_space_barrier(sc->bt, sc->bh, IX_DATAPORT, 2, 398 BUS_SPACE_BARRIER_READ); 399 400 /* Reset read pointer to the specified offset */ 401 bus_space_write_2(sc->bt, sc->bh, IX_READPTR, offset); 402 bus_space_barrier(sc->bt, sc->bh, IX_READPTR, 2, 403 BUS_SPACE_BARRIER_WRITE); 404 405 return bus_space_read_2(sc->bt, sc->bh, IX_DATAPORT); 406 } else { 407 bus_space_barrier(sc->bt, sc->bh, offset, 2, 408 BUS_SPACE_BARRIER_READ); 409 return bus_space_read_2(sc->bt, sc->bh, offset); 410 } 411 } 412 413 static void 414 ix_write_16 (sc, offset, value) 415 struct ie_softc *sc; 416 int offset; 417 u_int16_t value; 418 { 419 struct ix_softc* isc = (struct ix_softc *) sc; 420 421 if (isc->use_pio) { 422 /* Reset write pointer to the specified offset */ 423 bus_space_write_2(sc->bt, sc->bh, IX_WRITEPTR, offset); 424 bus_space_barrier(sc->bt, sc->bh, IX_WRITEPTR, 2, 425 BUS_SPACE_BARRIER_WRITE); 426 427 bus_space_write_2(sc->bt, sc->bh, IX_DATAPORT, value); 428 bus_space_barrier(sc->bt, sc->bh, IX_DATAPORT, 2, 429 BUS_SPACE_BARRIER_WRITE); 430 } else { 431 bus_space_write_2(sc->bt, sc->bh, offset, value); 432 bus_space_barrier(sc->bt, sc->bh, offset, 2, 433 BUS_SPACE_BARRIER_WRITE); 434 } 435 } 436 437 static void 438 ix_write_24 (sc, offset, addr) 439 struct ie_softc *sc; 440 int offset, addr; 441 { 442 char* ptr; 443 struct ix_softc* isc = (struct ix_softc *) sc; 444 int val = addr + (u_long) sc->sc_maddr - (u_long) sc->sc_iobase; 445 446 if (isc->use_pio) { 447 /* Reset write pointer to the specified offset */ 448 bus_space_write_2(sc->bt, sc->bh, IX_WRITEPTR, offset); 449 bus_space_barrier(sc->bt, sc->bh, IX_WRITEPTR, 2, 450 BUS_SPACE_BARRIER_WRITE); 451 452 ptr = (char*) &val; 453 bus_space_write_2(sc->bt, sc->bh, IX_DATAPORT, 454 *((u_int16_t *)ptr)); 455 bus_space_write_2(sc->bt, sc->bh, IX_DATAPORT, 456 *((u_int16_t *)(ptr + 2))); 457 bus_space_barrier(sc->bt, sc->bh, IX_DATAPORT, 2, 458 BUS_SPACE_BARRIER_WRITE); 459 } else { 460 bus_space_write_4(sc->bt, sc->bh, offset, val); 461 bus_space_barrier(sc->bt, sc->bh, offset, 4, 462 BUS_SPACE_BARRIER_WRITE); 463 } 464 } 465 466 static void 467 ix_zeromem(sc, offset, count) 468 struct ie_softc *sc; 469 int offset, count; 470 { 471 int i; 472 int dribble; 473 struct ix_softc* isc = (struct ix_softc *) sc; 474 475 if (isc->use_pio) { 476 /* Reset write pointer to the specified offset */ 477 bus_space_write_2(sc->bt, sc->bh, IX_WRITEPTR, offset); 478 bus_space_barrier(sc->bt, sc->bh, IX_WRITEPTR, 2, 479 BUS_SPACE_BARRIER_WRITE); 480 481 if (offset % 2) { 482 bus_space_write_1(sc->bt, sc->bh, IX_DATAPORT, 0); 483 count--; 484 } 485 486 dribble = count % 2; 487 for(i = 0; i < count / 2; i++) 488 bus_space_write_2(sc->bt, sc->bh, IX_DATAPORT, 0); 489 490 if (dribble) 491 bus_space_write_1(sc->bt, sc->bh, IX_DATAPORT, 0); 492 493 bus_space_barrier(sc->bt, sc->bh, IX_DATAPORT, 2, 494 BUS_SPACE_BARRIER_WRITE); 495 } else { 496 bus_space_set_region_1(sc->bt, sc->bh, offset, 0, count); 497 bus_space_barrier(sc->bt, sc->bh, offset, count, 498 BUS_SPACE_BARRIER_WRITE); 499 } 500 } 501 502 static void 503 ix_mediastatus(sc, ifmr) 504 struct ie_softc *sc; 505 struct ifmediareq *ifmr; 506 { 507 struct ifmedia *ifm = &sc->sc_media; 508 509 /* 510 * The currently selected media is always the active media. 511 */ 512 ifmr->ifm_active = ifm->ifm_cur->ifm_media; 513 } 514 515 int 516 ix_match(parent, cf, aux) 517 struct device *parent; 518 struct cfdata *cf; 519 void *aux; 520 { 521 int i; 522 int rv = 0; 523 bus_addr_t maddr; 524 bus_size_t msize; 525 u_short checksum = 0; 526 bus_space_handle_t ioh; 527 bus_space_tag_t iot; 528 u_int8_t val, bart_config; 529 u_short pg, adjust, decode, edecode; 530 u_short board_id, id_var1, id_var2, irq, irq_encoded; 531 struct isa_attach_args * const ia = aux; 532 short irq_translate[] = {0, 0x09, 0x03, 0x04, 0x05, 0x0a, 0x0b, 0}; 533 534 iot = ia->ia_iot; 535 536 if (bus_space_map(iot, ia->ia_iobase, 537 IX_IOSIZE, 0, &ioh) != 0) { 538 DPRINTF(("Can't map io space at 0x%x\n", ia->ia_iobase)); 539 return (0); 540 } 541 542 /* XXX: reset any ee16 at the current iobase */ 543 bus_space_write_1(iot, ioh, IX_ECTRL, IX_RESET_ASIC); 544 bus_space_write_1(iot, ioh, IX_ECTRL, 0); 545 delay(240); 546 547 /* now look for ee16. */ 548 board_id = id_var1 = id_var2 = 0; 549 for (i = 0; i < 4 ; i++) { 550 id_var1 = bus_space_read_1(iot, ioh, IX_ID_PORT); 551 id_var2 = ((id_var1 & 0x03) << 2); 552 board_id |= (( id_var1 >> 4) << id_var2); 553 } 554 555 if (board_id != IX_ID) { 556 DPRINTF(("BART ID mismatch (got 0x%04x, expected 0x%04x)\n", 557 board_id, IX_ID)); 558 goto out; 559 } 560 561 /* 562 * The shared RAM size and location of the EE16 is encoded into 563 * EEPROM location 6. The location of the first set bit tells us 564 * the memory address (0xc0000 + (0x4000 * FSB)), where FSB is the 565 * number of the first set bit. The zeroes are then shifted out, 566 * and the results is the memory size (1 = 16k, 3 = 32k, 7 = 48k, 567 * 0x0f = 64k). 568 * 569 * Examples: 570 * 0x3c -> 64k@0xc8000, 0x70 -> 48k@0xd0000, 0xc0 -> 32k@0xd8000 571 * 0x80 -> 16k@0xdc000. 572 * 573 * Side note: this comes from reading the old driver rather than 574 * from a more definitive source, so it could be out-of-whack 575 * with what the card can do... 576 */ 577 578 val = ix_read_eeprom(iot, ioh, 6) & 0xff; 579 for(pg = 0; pg < 8; pg++) { 580 if (val & 1) 581 break; 582 val = val >> 1; 583 } 584 585 if (pg == 8) { 586 DPRINTF(("Invalid or unsupported memory config\n")); 587 goto out; 588 } 589 590 maddr = 0xc0000 + (pg * 0x4000); 591 592 switch (val) { 593 case 0x00: 594 msize = 0; 595 break; 596 597 case 0x01: 598 msize = 16 * 1024; 599 break; 600 601 case 0x03: 602 msize = 32 * 1024; 603 break; 604 605 case 0x07: 606 msize = 48 * 1024; 607 break; 608 609 case 0x0f: 610 msize = 64 * 1024; 611 break; 612 613 default: 614 DPRINTF(("invalid memory size %02x\n", val)); 615 goto out; 616 } 617 618 if (ia->ia_maddr == ISACF_IOMEM_DEFAULT) 619 ia->ia_maddr = maddr; 620 else if (ia->ia_maddr != maddr) { 621 DPRINTF(( 622 "ix_match: memaddr of board @ 0x%x doesn't match config\n", 623 ia->ia_iobase)); 624 goto out; 625 } 626 627 if (ia->ia_msize == ISACF_IOSIZ_DEFAULT) 628 ia->ia_msize = msize; 629 else if (ia->ia_msize != msize) { 630 DPRINTF(( 631 "ix_match: memsize of board @ 0x%x doesn't match config\n", 632 ia->ia_iobase)); 633 goto out; 634 } 635 636 /* need to put the 586 in RESET, and leave it */ 637 bus_space_write_1(iot, ioh, IX_ECTRL, IX_RESET_586); 638 639 /* read the eeprom and checksum it, should == IX_ID */ 640 for(i = 0; i < 0x40; i++) 641 checksum += ix_read_eeprom(iot, ioh, i); 642 643 if (checksum != IX_ID) { 644 DPRINTF(("checksum mismatch (got 0x%04x, expected 0x%04x\n", 645 checksum, IX_ID)); 646 goto out; 647 } 648 649 /* 650 * Only do the following bit if using memory-mapped access. For 651 * boards with no mapped memory, we use PIO. We also use PIO for 652 * boards with 16K of mapped memory, as those setups don't seem 653 * to work otherwise. 654 */ 655 if (msize != 0 && msize != 16384) { 656 /* Set board up with memory-mapping info */ 657 adjust = IX_MCTRL_FMCS16 | (pg & 0x3) << 2; 658 decode = ((1 << (ia->ia_msize / 16384)) - 1) << pg; 659 edecode = ((~decode >> 4) & 0xF0) | (decode >> 8); 660 661 bus_space_write_1(iot, ioh, IX_MEMDEC, decode & 0xFF); 662 bus_space_write_1(iot, ioh, IX_MCTRL, adjust); 663 bus_space_write_1(iot, ioh, IX_MPCTRL, (~decode & 0xFF)); 664 665 /* XXX disable Exxx */ 666 bus_space_write_1(iot, ioh, IX_MECTRL, edecode); 667 } 668 669 /* 670 * Get the encoded interrupt number from the EEPROM, check it 671 * against the passed in IRQ. Issue a warning if they do not 672 * match, and fail the probe. If irq is 'IRQUNK' then we 673 * use the EEPROM irq, and continue. 674 */ 675 irq_encoded = ix_read_eeprom(iot, ioh, IX_EEPROM_CONFIG1); 676 irq_encoded = (irq_encoded & IX_EEPROM_IRQ) >> IX_EEPROM_IRQ_SHIFT; 677 irq = irq_translate[irq_encoded]; 678 if (ia->ia_irq == ISACF_IRQ_DEFAULT) 679 ia->ia_irq = irq; 680 else if (irq != ia->ia_irq) { 681 DPRINTF(("board IRQ %d does not match config\n", irq)); 682 goto out; 683 } 684 685 /* disable the board interrupts */ 686 bus_space_write_1(iot, ioh, IX_IRQ, irq_encoded); 687 688 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 689 bart_config |= IX_BART_LOOPBACK; 690 bart_config |= IX_BART_MCS16_TEST; /* inb doesn't get bit! */ 691 bus_space_write_1(iot, ioh, IX_CONFIG, bart_config); 692 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 693 694 bus_space_write_1(iot, ioh, IX_ECTRL, 0); 695 delay(100); 696 697 rv = 1; 698 ia->ia_iosize = IX_IOSIZE; 699 DPRINTF(("ix_match: found board @ 0x%x\n", ia->ia_iobase)); 700 701 out: 702 bus_space_unmap(iot, ioh, IX_IOSIZE); 703 return (rv); 704 } 705 706 void 707 ix_attach(parent, self, aux) 708 struct device *parent; 709 struct device *self; 710 void *aux; 711 { 712 struct ix_softc *isc = (void *)self; 713 struct ie_softc *sc = &isc->sc_ie; 714 struct isa_attach_args *ia = aux; 715 716 int media; 717 int i, memsize; 718 u_int8_t bart_config; 719 bus_space_tag_t iot; 720 u_int8_t bpat, bval; 721 u_int16_t wpat, wval; 722 bus_space_handle_t ioh, memh; 723 u_short irq_encoded; 724 u_int8_t ethaddr[ETHER_ADDR_LEN]; 725 726 iot = ia->ia_iot; 727 728 /* 729 * Shared memory access seems to fail on 16K mapped boards, so 730 * disable shared memory access if the board is in 16K mode. If 731 * no memory is mapped, we have no choice but to use PIO 732 */ 733 isc->use_pio = (ia->ia_msize <= (16 * 1024)); 734 735 if (bus_space_map(iot, ia->ia_iobase, 736 ia->ia_iosize, 0, &ioh) != 0) { 737 738 DPRINTF(("\n%s: can't map i/o space 0x%x-0x%x\n", 739 sc->sc_dev.dv_xname, ia->ia_iobase, 740 ia->ia_iobase + ia->ia_iosize - 1)); 741 return; 742 } 743 744 /* We map memory even if using PIO so something else doesn't grab it */ 745 if (ia->ia_msize) { 746 if (bus_space_map(ia->ia_memt, ia->ia_maddr, 747 ia->ia_msize, 0, &memh) != 0) { 748 DPRINTF(("\n%s: can't map iomem space 0x%x-0x%x\n", 749 sc->sc_dev.dv_xname, ia->ia_maddr, 750 ia->ia_maddr + ia->ia_msize - 1)); 751 bus_space_unmap(iot, ioh, ia->ia_iosize); 752 return; 753 } 754 } 755 756 isc->sc_regt = iot; 757 isc->sc_regh = ioh; 758 759 /* 760 * Get the hardware ethernet address from the EEPROM and 761 * save it in the softc for use by the 586 setup code. 762 */ 763 wval = ix_read_eeprom(iot, ioh, IX_EEPROM_ENET_HIGH); 764 ethaddr[1] = wval & 0xFF; 765 ethaddr[0] = wval >> 8; 766 wval = ix_read_eeprom(iot, ioh, IX_EEPROM_ENET_MID); 767 ethaddr[3] = wval & 0xFF; 768 ethaddr[2] = wval >> 8; 769 wval = ix_read_eeprom(iot, ioh, IX_EEPROM_ENET_LOW); 770 ethaddr[5] = wval & 0xFF; 771 ethaddr[4] = wval >> 8; 772 773 sc->hwinit = NULL; 774 sc->hwreset = ix_reset; 775 sc->chan_attn = ix_atten; 776 sc->intrhook = ix_intrhook; 777 778 sc->memcopyin = ix_copyin; 779 sc->memcopyout = ix_copyout; 780 781 /* If using PIO, make sure to setup single-byte read/write functions */ 782 if (isc->use_pio) { 783 sc->ie_bus_barrier = ix_bus_barrier; 784 } else { 785 sc->ie_bus_barrier = NULL; 786 } 787 788 sc->ie_bus_read16 = ix_read_16; 789 sc->ie_bus_write16 = ix_write_16; 790 sc->ie_bus_write24 = ix_write_24; 791 792 sc->do_xmitnopchain = 0; 793 794 sc->sc_mediachange = NULL; 795 sc->sc_mediastatus = ix_mediastatus; 796 797 if (isc->use_pio) { 798 sc->bt = iot; 799 sc->bh = ioh; 800 801 /* 802 * If using PIO, the memory size is bounded by on-card memory, 803 * not by how much is mapped into the memory-mapped region, so 804 * determine how much total memory we have to play with here. 805 */ 806 for(memsize = 64 * 1024; memsize; memsize -= 16 * 1024) { 807 /* warm up shared memory, the zero it all out */ 808 ix_zeromem(sc, 0, 32); 809 ix_zeromem(sc, 0, memsize); 810 811 /* Reset write pointer to the start of RAM */ 812 bus_space_write_2(iot, ioh, IX_WRITEPTR, 0); 813 bus_space_barrier(iot, ioh, IX_WRITEPTR, 2, 814 BUS_SPACE_BARRIER_WRITE); 815 816 /* write test pattern */ 817 for(i = 0; i < memsize; i += 2) { 818 bus_space_write_2(iot, ioh, IX_DATAPORT, wpat); 819 wpat += 3; 820 } 821 822 /* Flush all reads & writes to data port */ 823 bus_space_barrier(iot, ioh, IX_DATAPORT, 2, 824 BUS_SPACE_BARRIER_READ | 825 BUS_SPACE_BARRIER_WRITE); 826 827 /* Reset read pointer to beginning of card RAM */ 828 bus_space_write_2(iot, ioh, IX_READPTR, 0); 829 bus_space_barrier(iot, ioh, IX_READPTR, 2, 830 BUS_SPACE_BARRIER_WRITE); 831 832 /* read and verify test pattern */ 833 for(i = 0, wpat = 1; i < memsize; i += 2) { 834 wval = bus_space_read_2(iot, ioh, IX_DATAPORT); 835 836 if (wval != wpat) 837 break; 838 839 wpat += 3; 840 } 841 842 /* If we failed, try next size down */ 843 if (i != memsize) 844 continue; 845 846 /* Now try it all with byte reads/writes */ 847 ix_zeromem(sc, 0, 32); 848 ix_zeromem(sc, 0, memsize); 849 850 /* Reset write pointer to start of card RAM */ 851 bus_space_write_2(iot, ioh, IX_WRITEPTR, 0); 852 bus_space_barrier(iot, ioh, IX_WRITEPTR, 2, 853 BUS_SPACE_BARRIER_WRITE); 854 855 /* write out test pattern */ 856 for(i = 0, bpat = 1; i < memsize; i++) { 857 bus_space_write_1(iot, ioh, IX_DATAPORT, bpat); 858 bpat += 3; 859 } 860 861 /* Flush all reads & writes to data port */ 862 bus_space_barrier(iot, ioh, IX_DATAPORT, 2, 863 BUS_SPACE_BARRIER_READ | 864 BUS_SPACE_BARRIER_WRITE); 865 866 /* Reset read pointer to beginning of card RAM */ 867 bus_space_write_2(iot, ioh, IX_READPTR, 0); 868 bus_space_barrier(iot, ioh, IX_READPTR, 2, 869 BUS_SPACE_BARRIER_WRITE); 870 871 /* read and verify test pattern */ 872 for(i = 0, bpat = 1; i < memsize; i++) { 873 bval = bus_space_read_1(iot, ioh, IX_DATAPORT); 874 875 if (bval != bpat) 876 bpat += 3; 877 } 878 879 /* If we got through all of memory, we're done! */ 880 if (i == memsize) 881 break; 882 } 883 884 /* Memory tests failed, punt... */ 885 if (memsize == 0) { 886 DPRINTF(("\n%s: can't determine size of on-card RAM\n", 887 sc->sc_dev.dv_xname)); 888 bus_space_unmap(iot, ioh, ia->ia_iosize); 889 return; 890 } 891 892 sc->bt = iot; 893 sc->bh = ioh; 894 895 sc->sc_msize = memsize; 896 sc->sc_maddr = (void*) 0; 897 } else { 898 sc->bt = ia->ia_memt; 899 sc->bh = memh; 900 901 sc->sc_msize = ia->ia_msize; 902 sc->sc_maddr = (void *)memh; 903 } 904 905 /* Map i/o space. */ 906 sc->sc_iobase = (char *)sc->sc_maddr + sc->sc_msize - (1 << 24); 907 908 /* set up pointers to important on-card control structures */ 909 sc->iscp = 0; 910 sc->scb = IE_ISCP_SZ; 911 sc->scp = sc->sc_msize + IE_SCP_ADDR - (1 << 24); 912 913 sc->buf_area = sc->scb + IE_SCB_SZ; 914 sc->buf_area_sz = sc->sc_msize - IE_ISCP_SZ - IE_SCB_SZ - IE_SCP_SZ; 915 916 /* zero card memory */ 917 ix_zeromem(sc, 0, 32); 918 ix_zeromem(sc, 0, sc->sc_msize); 919 920 /* set card to 16-bit bus mode */ 921 if (isc->use_pio) { 922 bus_space_write_2(sc->bt, sc->bh, IX_WRITEPTR, 923 IE_SCP_BUS_USE((u_long)sc->scp)); 924 bus_space_barrier(sc->bt, sc->bh, IX_WRITEPTR, 2, 925 BUS_SPACE_BARRIER_WRITE); 926 927 bus_space_write_1(sc->bt, sc->bh, IX_DATAPORT, 0); 928 } else { 929 bus_space_write_1(sc->bt, sc->bh, 930 IE_SCP_BUS_USE((u_long)sc->scp), 0); 931 } 932 933 /* set up pointers to key structures */ 934 ix_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp); 935 ix_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb); 936 ix_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp); 937 938 /* flush setup of pointers, check if chip answers */ 939 if (isc->use_pio) { 940 bus_space_barrier(sc->bt, sc->bh, 0, IX_IOSIZE, 941 BUS_SPACE_BARRIER_WRITE); 942 } else { 943 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 944 BUS_SPACE_BARRIER_WRITE); 945 } 946 947 if (!i82586_proberam(sc)) { 948 DPRINTF(("\n%s: Can't talk to i82586!\n", 949 sc->sc_dev.dv_xname)); 950 bus_space_unmap(iot, ioh, ia->ia_iosize); 951 952 if (ia->ia_msize) 953 bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); 954 return; 955 } 956 957 /* Figure out which media is being used... */ 958 if (ix_read_eeprom(iot, ioh, IX_EEPROM_CONFIG1) & 959 IX_EEPROM_MEDIA_EXT) { 960 if (ix_read_eeprom(iot, ioh, IX_EEPROM_MEDIA) & 961 IX_EEPROM_MEDIA_TP) 962 media = IFM_ETHER | IFM_10_T; 963 else 964 media = IFM_ETHER | IFM_10_2; 965 } else 966 media = IFM_ETHER | IFM_10_5; 967 968 /* Take the card out of lookback */ 969 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 970 bart_config &= ~IX_BART_LOOPBACK; 971 bart_config |= IX_BART_MCS16_TEST; /* inb doesn't get bit! */ 972 bus_space_write_1(iot, ioh, IX_CONFIG, bart_config); 973 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 974 975 irq_encoded = ix_read_eeprom(iot, ioh, 976 IX_EEPROM_CONFIG1); 977 irq_encoded = (irq_encoded & IX_EEPROM_IRQ) >> IX_EEPROM_IRQ_SHIFT; 978 979 /* Enable interrupts */ 980 bus_space_write_1(iot, ioh, IX_IRQ, 981 irq_encoded | IX_IRQ_ENABLE); 982 983 /* Flush all writes to registers */ 984 bus_space_barrier(iot, ioh, 0, ia->ia_iosize, BUS_SPACE_BARRIER_WRITE); 985 986 isc->irq_encoded = irq_encoded; 987 988 i82586_attach(sc, "EtherExpress/16", ethaddr, 989 ix_media, NIX_MEDIA, media); 990 991 if (isc->use_pio) 992 printf("%s: unsupported memory config, using PIO to access %d bytes of memory\n", sc->sc_dev.dv_xname, sc->sc_msize); 993 994 isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 995 IPL_NET, i82586_intr, sc); 996 if (isc->sc_ih == NULL) 997 DPRINTF(("\n%s: can't establish interrupt\n", 998 sc->sc_dev.dv_xname)); 999 } 1000 1001 struct cfattach ix_ca = { 1002 sizeof(struct ix_softc), ix_match, ix_attach 1003 }; 1004
Indexes created Tue Sep 30 11:09:46 GMT 2025