if_ix.c revision 1.6
1 /* $NetBSD: if_ix.c,v 1.6 1999/01/08 19:22:36 augustss 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/param.h> 40 #include <sys/systm.h> 41 #include <sys/mbuf.h> 42 #include <sys/errno.h> 43 #include <sys/device.h> 44 #include <sys/protosw.h> 45 #include <sys/socket.h> 46 47 #include <net/if.h> 48 #include <net/if_dl.h> 49 #include <net/if_types.h> 50 #include <net/if_media.h> 51 #include <net/if_ether.h> 52 53 #include <vm/vm.h> 54 55 #include <machine/cpu.h> 56 #include <machine/bus.h> 57 #include <machine/intr.h> 58 59 #include <dev/isa/isareg.h> 60 #include <dev/isa/isavar.h> 61 62 #include <dev/ic/i82586reg.h> 63 #include <dev/ic/i82586var.h> 64 #include <dev/isa/if_ixreg.h> 65 66 #ifdef IX_DEBUG 67 #define DPRINTF(x) printf x 68 #else 69 #define DPRINTF(x) 70 #endif 71 72 int ix_media[] = { 73 IFM_ETHER | IFM_10_5, 74 IFM_ETHER | IFM_10_2, 75 IFM_ETHER | IFM_10_T, 76 }; 77 #define NIX_MEDIA (sizeof(ix_media) / sizeof(ix_media[0])) 78 79 struct ix_softc { 80 struct ie_softc sc_ie; 81 82 bus_space_tag_t sc_regt; /* space tag for registers */ 83 bus_space_handle_t sc_regh; /* space handle for registers */ 84 85 u_int16_t irq_encoded; /* encoded IRQ */ 86 void *sc_ih; /* interrupt handle */ 87 }; 88 89 static void ix_reset __P((struct ie_softc *, int)); 90 static void ix_atten __P((struct ie_softc *)); 91 static int ix_intrhook __P((struct ie_softc *, int)); 92 93 static void ix_copyin __P((struct ie_softc *, void *, int, size_t)); 94 static void ix_copyout __P((struct ie_softc *, const void *, int, size_t)); 95 96 static u_int16_t ix_read_16 __P((struct ie_softc *, int)); 97 static void ix_write_16 __P((struct ie_softc *, int, u_int16_t)); 98 static void ix_write_24 __P((struct ie_softc *, int, int)); 99 100 static void ix_mediastatus __P((struct ie_softc *, struct ifmediareq *)); 101 102 static u_int16_t ix_read_eeprom __P((bus_space_tag_t, bus_space_handle_t, int)); 103 static void ix_eeprom_outbits __P((bus_space_tag_t, bus_space_handle_t, int, int)); 104 static int ix_eeprom_inbits __P((bus_space_tag_t, bus_space_handle_t)); 105 static void ix_eeprom_clock __P((bus_space_tag_t, bus_space_handle_t, int)); 106 107 int ix_match __P((struct device *, struct cfdata *, void *)); 108 void ix_attach __P((struct device *, struct device *, void *)); 109 110 /* 111 * EtherExpress/16 support routines 112 */ 113 static void 114 ix_reset(sc, why) 115 struct ie_softc *sc; 116 int why; 117 { 118 struct ix_softc* isc = (struct ix_softc *) sc; 119 120 switch (why) { 121 case CHIP_PROBE: 122 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_ECTRL, 123 IX_RESET_586); 124 delay(100); 125 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_ECTRL, 0); 126 delay(100); 127 break; 128 129 case CARD_RESET: 130 break; 131 } 132 } 133 134 static void 135 ix_atten(sc) 136 struct ie_softc *sc; 137 { 138 struct ix_softc* isc = (struct ix_softc *) sc; 139 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_ATTN, 0); 140 } 141 142 static u_int16_t 143 ix_read_eeprom(iot, ioh, location) 144 bus_space_tag_t iot; 145 bus_space_handle_t ioh; 146 int location; 147 { 148 int ectrl, edata; 149 150 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 151 ectrl &= IX_ECTRL_MASK; 152 ectrl |= IX_ECTRL_EECS; 153 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 154 155 ix_eeprom_outbits(iot, ioh, IX_EEPROM_READ, IX_EEPROM_OPSIZE1); 156 ix_eeprom_outbits(iot, ioh, location, IX_EEPROM_ADDR_SIZE); 157 edata = ix_eeprom_inbits(iot, ioh); 158 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 159 ectrl &= ~(IX_RESET_ASIC | IX_ECTRL_EEDI | IX_ECTRL_EECS); 160 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 161 ix_eeprom_clock(iot, ioh, 1); 162 ix_eeprom_clock(iot, ioh, 0); 163 return (edata); 164 } 165 166 static void 167 ix_eeprom_outbits(iot, ioh, edata, count) 168 bus_space_tag_t iot; 169 bus_space_handle_t ioh; 170 int edata, count; 171 { 172 int ectrl, i; 173 174 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 175 ectrl &= ~IX_RESET_ASIC; 176 for (i = count - 1; i >= 0; i--) { 177 ectrl &= ~IX_ECTRL_EEDI; 178 if (edata & (1 << i)) { 179 ectrl |= IX_ECTRL_EEDI; 180 } 181 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 182 delay(1); /* eeprom data must be setup for 0.4 uSec */ 183 ix_eeprom_clock(iot, ioh, 1); 184 ix_eeprom_clock(iot, ioh, 0); 185 } 186 ectrl &= ~IX_ECTRL_EEDI; 187 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 188 delay(1); /* eeprom data must be held for 0.4 uSec */ 189 } 190 191 static int 192 ix_eeprom_inbits(iot, ioh) 193 bus_space_tag_t iot; 194 bus_space_handle_t ioh; 195 { 196 int ectrl, edata, i; 197 198 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 199 ectrl &= ~IX_RESET_ASIC; 200 for (edata = 0, i = 0; i < 16; i++) { 201 edata = edata << 1; 202 ix_eeprom_clock(iot, ioh, 1); 203 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 204 if (ectrl & IX_ECTRL_EEDO) { 205 edata |= 1; 206 } 207 ix_eeprom_clock(iot, ioh, 0); 208 } 209 return (edata); 210 } 211 212 static void 213 ix_eeprom_clock(iot, ioh, state) 214 bus_space_tag_t iot; 215 bus_space_handle_t ioh; 216 int state; 217 { 218 int ectrl; 219 220 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 221 ectrl &= ~(IX_RESET_ASIC | IX_ECTRL_EESK); 222 if (state) { 223 ectrl |= IX_ECTRL_EESK; 224 } 225 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 226 delay(9); /* EESK must be stable for 8.38 uSec */ 227 } 228 229 static int 230 ix_intrhook(sc, where) 231 struct ie_softc *sc; 232 int where; 233 { 234 struct ix_softc* isc = (struct ix_softc *) sc; 235 236 switch (where) { 237 case INTR_ENTER: 238 /* entering ISR: disable card interrupts */ 239 bus_space_write_1(isc->sc_regt, isc->sc_regh, 240 IX_IRQ, isc->irq_encoded); 241 break; 242 243 case INTR_EXIT: 244 /* exiting ISR: re-enable card interrupts */ 245 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_IRQ, 246 isc->irq_encoded | IX_IRQ_ENABLE); 247 break; 248 } 249 250 return 1; 251 } 252 253 254 static void 255 ix_copyin (sc, dst, offset, size) 256 struct ie_softc *sc; 257 void *dst; 258 int offset; 259 size_t size; 260 { 261 int dribble; 262 u_int8_t* bptr = dst; 263 264 bus_space_barrier(sc->bt, sc->bh, offset, size, 265 BUS_SPACE_BARRIER_READ); 266 267 if (offset % 2) { 268 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 269 offset++; bptr++; size--; 270 } 271 272 dribble = size % 2; 273 bus_space_read_region_2(sc->bt, sc->bh, offset, (u_int16_t *) bptr, 274 size >> 1); 275 276 if (dribble) { 277 bptr += size - 1; 278 offset += size - 1; 279 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 280 } 281 } 282 283 static void 284 ix_copyout (sc, src, offset, size) 285 struct ie_softc *sc; 286 const void *src; 287 int offset; 288 size_t size; 289 { 290 int dribble; 291 int osize = size; 292 int ooffset = offset; 293 const u_int8_t* bptr = src; 294 295 if (offset % 2) { 296 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 297 offset++; bptr++; size--; 298 } 299 300 dribble = size % 2; 301 bus_space_write_region_2(sc->bt, sc->bh, offset, (u_int16_t *)bptr, 302 size >> 1); 303 if (dribble) { 304 bptr += size - 1; 305 offset += size - 1; 306 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 307 } 308 309 bus_space_barrier(sc->bt, sc->bh, ooffset, osize, 310 BUS_SPACE_BARRIER_WRITE); 311 } 312 313 static u_int16_t 314 ix_read_16 (sc, offset) 315 struct ie_softc *sc; 316 int offset; 317 { 318 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_READ); 319 return bus_space_read_2(sc->bt, sc->bh, offset); 320 } 321 322 static void 323 ix_write_16 (sc, offset, value) 324 struct ie_softc *sc; 325 int offset; 326 u_int16_t value; 327 { 328 bus_space_write_2(sc->bt, sc->bh, offset, value); 329 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_WRITE); 330 } 331 332 static void 333 ix_write_24 (sc, offset, addr) 334 struct ie_softc *sc; 335 int offset, addr; 336 { 337 bus_space_write_4(sc->bt, sc->bh, offset, addr + 338 (u_long) sc->sc_maddr - (u_long) sc->sc_iobase); 339 bus_space_barrier(sc->bt, sc->bh, offset, 4, BUS_SPACE_BARRIER_WRITE); 340 } 341 342 static void 343 ix_mediastatus(sc, ifmr) 344 struct ie_softc *sc; 345 struct ifmediareq *ifmr; 346 { 347 struct ifmedia *ifm = &sc->sc_media; 348 349 /* 350 * The currently selected media is always the active media. 351 */ 352 ifmr->ifm_active = ifm->ifm_cur->ifm_media; 353 } 354 355 int 356 ix_match(parent, cf, aux) 357 struct device *parent; 358 struct cfdata *cf; 359 void *aux; 360 { 361 int i; 362 int rv = 0; 363 bus_addr_t maddr; 364 bus_size_t msize; 365 u_short checksum = 0; 366 bus_space_handle_t ioh; 367 bus_space_tag_t iot; 368 u_int8_t val, bart_config; 369 u_short pg, adjust, decode, edecode; 370 u_short board_id, id_var1, id_var2, irq, irq_encoded; 371 struct isa_attach_args * const ia = aux; 372 short irq_translate[] = {0, 0x09, 0x03, 0x04, 0x05, 0x0a, 0x0b, 0}; 373 374 iot = ia->ia_iot; 375 376 if (bus_space_map(iot, ia->ia_iobase, 377 IX_IOSIZE, 0, &ioh) != 0) { 378 DPRINTF(("Can't map io space at 0x%x\n", ia->ia_iobase)); 379 return (0); 380 } 381 382 /* XXX: reset any ee16 at the current iobase */ 383 bus_space_write_1(iot, ioh, IX_ECTRL, IX_RESET_ASIC); 384 bus_space_write_1(iot, ioh, IX_ECTRL, 0); 385 delay(240); 386 387 /* now look for ee16. */ 388 board_id = id_var1 = id_var2 = 0; 389 for (i = 0; i < 4 ; i++) { 390 id_var1 = bus_space_read_1(iot, ioh, IX_ID_PORT); 391 id_var2 = ((id_var1 & 0x03) << 2); 392 board_id |= (( id_var1 >> 4) << id_var2); 393 } 394 395 if (board_id != IX_ID) { 396 DPRINTF(("BART ID mismatch (got 0x%04x, expected 0x%04x)\n", 397 board_id, IX_ID)); 398 goto out; 399 } 400 401 /* 402 * The shared RAM size and location of the EE16 is encoded into 403 * EEPROM location 6. The location of the first set bit tells us 404 * the memory address (0xc0000 + (0x4000 * FSB)), where FSB is the 405 * number of the first set bit. The zeroes are then shifted out, 406 * and the results is the memory size (1 = 16k, 3 = 32k, 7 = 48k, 407 * 0x0f = 64k). 408 * 409 * Examples: 410 * 0x3c -> 64k@0xc8000, 0x70 -> 48k@0xd0000, 0xc0 -> 32k@0xd8000 411 * 0x80 -> 16k@0xdc000. 412 * 413 * Side note: this comes from reading the old driver rather than 414 * from a more definitive source, so it could be out-of-whack 415 * with what the card can do... 416 */ 417 418 val = ix_read_eeprom(iot, ioh, 6) & 0xff; 419 DPRINTF(("memory config: 0x%02x\n", val)); 420 421 for(i = 0; i < 8; i++) { 422 if (val & 1) 423 break; 424 val = val >> 1; 425 } 426 427 if (i == 8) { 428 DPRINTF(("Invalid or unsupported memory config\n")); 429 goto out; 430 } 431 432 maddr = 0xc0000 + (i * 0x4000); 433 434 switch (val) { 435 case 0x01: 436 msize = 16 * 1024; 437 break; 438 439 case 0x03: 440 msize = 32 * 1024; 441 break; 442 443 case 0x07: 444 msize = 48 * 1024; 445 break; 446 447 case 0x0f: 448 msize = 64 * 1024; 449 break; 450 451 default: 452 DPRINTF(("invalid memory size %02x\n", val)); 453 goto out; 454 } 455 456 if (ia->ia_maddr == ISACF_IOMEM_DEFAULT) 457 ia->ia_maddr = maddr; 458 else if (ia->ia_maddr != maddr) { 459 DPRINTF(( 460 "ix_match: memaddr of board @ 0x%x doesn't match config\n", 461 ia->ia_iobase)); 462 goto out; 463 } 464 465 if (ia->ia_msize == ISACF_IOSIZ_DEFAULT) 466 ia->ia_msize = msize; 467 else if (ia->ia_msize != msize) { 468 DPRINTF(( 469 "ix_match: memsize of board @ 0x%x doesn't match config\n", 470 ia->ia_iobase)); 471 goto out; 472 } 473 474 DPRINTF(("found %d byte memory region at %x\n", 475 ia->ia_msize, ia->ia_maddr)); 476 477 /* need to put the 586 in RESET, and leave it */ 478 bus_space_write_1(iot, ioh, IX_ECTRL, IX_RESET_586); 479 480 /* read the eeprom and checksum it, should == IX_ID */ 481 for(i = 0; i < 0x40; i++) 482 checksum += ix_read_eeprom(iot, ioh, i); 483 484 if (checksum != IX_ID) { 485 DPRINTF(("checksum mismatch (got 0x%04x, expected 0x%04x\n", 486 checksum, IX_ID)); 487 goto out; 488 } 489 490 /* 491 * Size and test the memory on the board. The size of the memory 492 * can be one of 16k, 32k, 48k or 64k. It can be located in the 493 * address range 0xC0000 to 0xEFFFF on 16k boundaries. 494 */ 495 pg = (ia->ia_maddr & 0x3C000) >> 14; 496 adjust = IX_MCTRL_FMCS16 | (pg & 0x3) << 2; 497 decode = ((1 << (ia->ia_msize / 16384)) - 1) << pg; 498 edecode = ((~decode >> 4) & 0xF0) | (decode >> 8); 499 500 /* ZZZ This should be checked against eeprom location 6, low byte */ 501 bus_space_write_1(iot, ioh, IX_MEMDEC, decode & 0xFF); 502 503 /* ZZZ This should be checked against eeprom location 1, low byte */ 504 bus_space_write_1(iot, ioh, IX_MCTRL, adjust); 505 506 /* ZZZ Now if I could find this one I would have it made */ 507 bus_space_write_1(iot, ioh, IX_MPCTRL, (~decode & 0xFF)); 508 509 /* ZZZ I think this is location 6, high byte */ 510 bus_space_write_1(iot, ioh, IX_MECTRL, edecode); /*XXX disable Exxx */ 511 512 /* 513 * Get the encoded interrupt number from the EEPROM, check it 514 * against the passed in IRQ. Issue a warning if they do not 515 * match, and fail the probe. If irq is 'IRQUNK' then we 516 * use the EEPROM irq, and continue. 517 */ 518 irq_encoded = ix_read_eeprom(iot, ioh, IX_EEPROM_CONFIG1); 519 irq_encoded = (irq_encoded & IX_EEPROM_IRQ) >> IX_EEPROM_IRQ_SHIFT; 520 irq = irq_translate[irq_encoded]; 521 if (ia->ia_irq == ISACF_IRQ_DEFAULT) 522 ia->ia_irq = irq; 523 else if (irq != ia->ia_irq) { 524 DPRINTF(("board IRQ %d does not match config\n", irq)); 525 goto out; 526 } 527 528 /* disable the board interrupts */ 529 bus_space_write_1(iot, ioh, IX_IRQ, irq_encoded); 530 531 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 532 bart_config |= IX_BART_LOOPBACK; 533 bart_config |= IX_BART_MCS16_TEST; /* inb doesn't get bit! */ 534 bus_space_write_1(iot, ioh, IX_CONFIG, bart_config); 535 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 536 537 bus_space_write_1(iot, ioh, IX_ECTRL, 0); 538 delay(100); 539 540 rv = 1; 541 ia->ia_iosize = IX_IOSIZE; 542 DPRINTF(("ix_match: found board @ 0x%x\n", ia->ia_iobase)); 543 544 out: 545 bus_space_unmap(iot, ioh, IX_IOSIZE); 546 return (rv); 547 } 548 549 void 550 ix_attach(parent, self, aux) 551 struct device *parent; 552 struct device *self; 553 void *aux; 554 { 555 struct ix_softc *isc = (void *)self; 556 struct ie_softc *sc = &isc->sc_ie; 557 struct isa_attach_args *ia = aux; 558 559 int media; 560 u_short eaddrtemp; 561 u_int8_t bart_config; 562 bus_space_tag_t iot; 563 bus_space_handle_t ioh, memh; 564 u_short irq_encoded; 565 u_int8_t ethaddr[ETHER_ADDR_LEN]; 566 567 iot = ia->ia_iot; 568 569 if (bus_space_map(iot, ia->ia_iobase, 570 ia->ia_iosize, 0, &ioh) != 0) { 571 572 DPRINTF(("\n%s: can't map i/o space 0x%x-0x%x\n", 573 sc->sc_dev.dv_xname, ia->ia_iobase, 574 ia->ia_iobase + ia->ia_iosize - 1)); 575 return; 576 } 577 578 if (bus_space_map(ia->ia_memt, ia->ia_maddr, 579 ia->ia_msize, 0, &memh) != 0) { 580 581 DPRINTF(("\n%s: can't map iomem space 0x%x-0x%x\n", 582 sc->sc_dev.dv_xname, ia->ia_maddr, 583 ia->ia_maddr + ia->ia_msize - 1)); 584 bus_space_unmap(iot, ioh, ia->ia_iosize); 585 return; 586 } 587 588 isc->sc_regt = iot; 589 isc->sc_regh = ioh; 590 591 /* 592 * Get the hardware ethernet address from the EEPROM and 593 * save it in the softc for use by the 586 setup code. 594 */ 595 eaddrtemp = ix_read_eeprom(iot, ioh, IX_EEPROM_ENET_HIGH); 596 ethaddr[1] = eaddrtemp & 0xFF; 597 ethaddr[0] = eaddrtemp >> 8; 598 eaddrtemp = ix_read_eeprom(iot, ioh, IX_EEPROM_ENET_MID); 599 ethaddr[3] = eaddrtemp & 0xFF; 600 ethaddr[2] = eaddrtemp >> 8; 601 eaddrtemp = ix_read_eeprom(iot, ioh, IX_EEPROM_ENET_LOW); 602 ethaddr[5] = eaddrtemp & 0xFF; 603 ethaddr[4] = eaddrtemp >> 8; 604 605 sc->hwinit = NULL; 606 sc->hwreset = ix_reset; 607 sc->chan_attn = ix_atten; 608 sc->intrhook = ix_intrhook; 609 610 sc->memcopyin = ix_copyin; 611 sc->memcopyout = ix_copyout; 612 sc->ie_bus_read16 = ix_read_16; 613 sc->ie_bus_write16 = ix_write_16; 614 sc->ie_bus_write24 = ix_write_24; 615 616 sc->do_xmitnopchain = 0; 617 618 sc->sc_mediachange = NULL; 619 sc->sc_mediastatus = ix_mediastatus; 620 621 sc->bt = ia->ia_memt; 622 sc->bh = memh; 623 624 /* Map i/o space. */ 625 sc->sc_msize = ia->ia_msize; 626 sc->sc_maddr = (void *)memh; 627 sc->sc_iobase = (char *)sc->sc_maddr + sc->sc_msize - (1 << 24); 628 629 /* set up pointers to important on-card control structures */ 630 sc->iscp = 0; 631 sc->scb = IE_ISCP_SZ; 632 sc->scp = sc->sc_msize + IE_SCP_ADDR - (1 << 24); 633 634 sc->buf_area = sc->scb + IE_SCB_SZ; 635 sc->buf_area_sz = sc->sc_msize - IE_ISCP_SZ - IE_SCB_SZ - IE_SCP_SZ; 636 637 /* zero card memory */ 638 bus_space_set_region_1(sc->bt, sc->bh, 0, 0, 32); 639 bus_space_set_region_1(sc->bt, sc->bh, 0, 0, sc->sc_msize); 640 641 /* set card to 16-bit bus mode */ 642 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 0); 643 644 /* set up pointers to key structures */ 645 ix_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp); 646 ix_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb); 647 ix_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp); 648 649 /* flush setup of pointers, check if chip answers */ 650 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 651 BUS_SPACE_BARRIER_WRITE); 652 if (!i82586_proberam(sc)) { 653 DPRINTF(("\n%s: Can't talk to i82586!\n", 654 sc->sc_dev.dv_xname)); 655 bus_space_unmap(iot, ioh, ia->ia_iosize); 656 bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); 657 return; 658 } 659 660 /* Figure out which media is being used... */ 661 if (ix_read_eeprom(iot, ioh, IX_EEPROM_CONFIG1) & 662 IX_EEPROM_MEDIA_EXT) { 663 if (ix_read_eeprom(iot, ioh, IX_EEPROM_MEDIA) & 664 IX_EEPROM_MEDIA_TP) 665 media = IFM_ETHER | IFM_10_T; 666 else 667 media = IFM_ETHER | IFM_10_2; 668 } else 669 media = IFM_ETHER | IFM_10_5; 670 671 /* Take the card out of lookback */ 672 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 673 bart_config &= ~IX_BART_LOOPBACK; 674 bart_config |= IX_BART_MCS16_TEST; /* inb doesn't get bit! */ 675 bus_space_write_1(iot, ioh, IX_CONFIG, bart_config); 676 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 677 678 irq_encoded = ix_read_eeprom(iot, ioh, 679 IX_EEPROM_CONFIG1); 680 irq_encoded = (irq_encoded & IX_EEPROM_IRQ) >> IX_EEPROM_IRQ_SHIFT; 681 682 /* Enable interrupts */ 683 bus_space_write_1(iot, ioh, IX_IRQ, 684 irq_encoded | IX_IRQ_ENABLE); 685 686 isc->irq_encoded = irq_encoded; 687 688 i82586_attach(sc, "EtherExpress/16", ethaddr, 689 ix_media, NIX_MEDIA, media); 690 691 isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 692 IPL_NET, i82586_intr, sc); 693 if (isc->sc_ih == NULL) 694 DPRINTF(("\n%s: can't establish interrupt\n", 695 sc->sc_dev.dv_xname)); 696 } 697 698 struct cfattach ix_ca = { 699 sizeof(struct ix_softc), ix_match, ix_attach 700 }; 701
Indexes created Mon Sep 29 21:09:56 GMT 2025