if_ix.c revision 1.7
1 /* $NetBSD: if_ix.c,v 1.7 2000/06/28 16:27:54 mrg 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 <machine/cpu.h> 54 #include <machine/bus.h> 55 #include <machine/intr.h> 56 57 #include <dev/isa/isareg.h> 58 #include <dev/isa/isavar.h> 59 60 #include <dev/ic/i82586reg.h> 61 #include <dev/ic/i82586var.h> 62 #include <dev/isa/if_ixreg.h> 63 64 #ifdef IX_DEBUG 65 #define DPRINTF(x) printf x 66 #else 67 #define DPRINTF(x) 68 #endif 69 70 int ix_media[] = { 71 IFM_ETHER | IFM_10_5, 72 IFM_ETHER | IFM_10_2, 73 IFM_ETHER | IFM_10_T, 74 }; 75 #define NIX_MEDIA (sizeof(ix_media) / sizeof(ix_media[0])) 76 77 struct ix_softc { 78 struct ie_softc sc_ie; 79 80 bus_space_tag_t sc_regt; /* space tag for registers */ 81 bus_space_handle_t sc_regh; /* space handle for registers */ 82 83 u_int16_t irq_encoded; /* encoded IRQ */ 84 void *sc_ih; /* interrupt handle */ 85 }; 86 87 static void ix_reset __P((struct ie_softc *, int)); 88 static void ix_atten __P((struct ie_softc *)); 89 static int ix_intrhook __P((struct ie_softc *, int)); 90 91 static void ix_copyin __P((struct ie_softc *, void *, int, size_t)); 92 static void ix_copyout __P((struct ie_softc *, const void *, int, size_t)); 93 94 static u_int16_t ix_read_16 __P((struct ie_softc *, int)); 95 static void ix_write_16 __P((struct ie_softc *, int, u_int16_t)); 96 static void ix_write_24 __P((struct ie_softc *, int, int)); 97 98 static void ix_mediastatus __P((struct ie_softc *, struct ifmediareq *)); 99 100 static u_int16_t ix_read_eeprom __P((bus_space_tag_t, bus_space_handle_t, int)); 101 static void ix_eeprom_outbits __P((bus_space_tag_t, bus_space_handle_t, int, int)); 102 static int ix_eeprom_inbits __P((bus_space_tag_t, bus_space_handle_t)); 103 static void ix_eeprom_clock __P((bus_space_tag_t, bus_space_handle_t, int)); 104 105 int ix_match __P((struct device *, struct cfdata *, void *)); 106 void ix_attach __P((struct device *, struct device *, void *)); 107 108 /* 109 * EtherExpress/16 support routines 110 */ 111 static void 112 ix_reset(sc, why) 113 struct ie_softc *sc; 114 int why; 115 { 116 struct ix_softc* isc = (struct ix_softc *) sc; 117 118 switch (why) { 119 case CHIP_PROBE: 120 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_ECTRL, 121 IX_RESET_586); 122 delay(100); 123 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_ECTRL, 0); 124 delay(100); 125 break; 126 127 case CARD_RESET: 128 break; 129 } 130 } 131 132 static void 133 ix_atten(sc) 134 struct ie_softc *sc; 135 { 136 struct ix_softc* isc = (struct ix_softc *) sc; 137 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_ATTN, 0); 138 } 139 140 static u_int16_t 141 ix_read_eeprom(iot, ioh, location) 142 bus_space_tag_t iot; 143 bus_space_handle_t ioh; 144 int location; 145 { 146 int ectrl, edata; 147 148 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 149 ectrl &= IX_ECTRL_MASK; 150 ectrl |= IX_ECTRL_EECS; 151 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 152 153 ix_eeprom_outbits(iot, ioh, IX_EEPROM_READ, IX_EEPROM_OPSIZE1); 154 ix_eeprom_outbits(iot, ioh, location, IX_EEPROM_ADDR_SIZE); 155 edata = ix_eeprom_inbits(iot, ioh); 156 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 157 ectrl &= ~(IX_RESET_ASIC | IX_ECTRL_EEDI | IX_ECTRL_EECS); 158 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 159 ix_eeprom_clock(iot, ioh, 1); 160 ix_eeprom_clock(iot, ioh, 0); 161 return (edata); 162 } 163 164 static void 165 ix_eeprom_outbits(iot, ioh, edata, count) 166 bus_space_tag_t iot; 167 bus_space_handle_t ioh; 168 int edata, count; 169 { 170 int ectrl, i; 171 172 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 173 ectrl &= ~IX_RESET_ASIC; 174 for (i = count - 1; i >= 0; i--) { 175 ectrl &= ~IX_ECTRL_EEDI; 176 if (edata & (1 << i)) { 177 ectrl |= IX_ECTRL_EEDI; 178 } 179 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 180 delay(1); /* eeprom data must be setup for 0.4 uSec */ 181 ix_eeprom_clock(iot, ioh, 1); 182 ix_eeprom_clock(iot, ioh, 0); 183 } 184 ectrl &= ~IX_ECTRL_EEDI; 185 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 186 delay(1); /* eeprom data must be held for 0.4 uSec */ 187 } 188 189 static int 190 ix_eeprom_inbits(iot, ioh) 191 bus_space_tag_t iot; 192 bus_space_handle_t ioh; 193 { 194 int ectrl, edata, i; 195 196 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 197 ectrl &= ~IX_RESET_ASIC; 198 for (edata = 0, i = 0; i < 16; i++) { 199 edata = edata << 1; 200 ix_eeprom_clock(iot, ioh, 1); 201 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 202 if (ectrl & IX_ECTRL_EEDO) { 203 edata |= 1; 204 } 205 ix_eeprom_clock(iot, ioh, 0); 206 } 207 return (edata); 208 } 209 210 static void 211 ix_eeprom_clock(iot, ioh, state) 212 bus_space_tag_t iot; 213 bus_space_handle_t ioh; 214 int state; 215 { 216 int ectrl; 217 218 ectrl = bus_space_read_1(iot, ioh, IX_ECTRL); 219 ectrl &= ~(IX_RESET_ASIC | IX_ECTRL_EESK); 220 if (state) { 221 ectrl |= IX_ECTRL_EESK; 222 } 223 bus_space_write_1(iot, ioh, IX_ECTRL, ectrl); 224 delay(9); /* EESK must be stable for 8.38 uSec */ 225 } 226 227 static int 228 ix_intrhook(sc, where) 229 struct ie_softc *sc; 230 int where; 231 { 232 struct ix_softc* isc = (struct ix_softc *) sc; 233 234 switch (where) { 235 case INTR_ENTER: 236 /* entering ISR: disable card interrupts */ 237 bus_space_write_1(isc->sc_regt, isc->sc_regh, 238 IX_IRQ, isc->irq_encoded); 239 break; 240 241 case INTR_EXIT: 242 /* exiting ISR: re-enable card interrupts */ 243 bus_space_write_1(isc->sc_regt, isc->sc_regh, IX_IRQ, 244 isc->irq_encoded | IX_IRQ_ENABLE); 245 break; 246 } 247 248 return 1; 249 } 250 251 252 static void 253 ix_copyin (sc, dst, offset, size) 254 struct ie_softc *sc; 255 void *dst; 256 int offset; 257 size_t size; 258 { 259 int dribble; 260 u_int8_t* bptr = dst; 261 262 bus_space_barrier(sc->bt, sc->bh, offset, size, 263 BUS_SPACE_BARRIER_READ); 264 265 if (offset % 2) { 266 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 267 offset++; bptr++; size--; 268 } 269 270 dribble = size % 2; 271 bus_space_read_region_2(sc->bt, sc->bh, offset, (u_int16_t *) bptr, 272 size >> 1); 273 274 if (dribble) { 275 bptr += size - 1; 276 offset += size - 1; 277 *bptr = bus_space_read_1(sc->bt, sc->bh, offset); 278 } 279 } 280 281 static void 282 ix_copyout (sc, src, offset, size) 283 struct ie_softc *sc; 284 const void *src; 285 int offset; 286 size_t size; 287 { 288 int dribble; 289 int osize = size; 290 int ooffset = offset; 291 const u_int8_t* bptr = src; 292 293 if (offset % 2) { 294 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 295 offset++; bptr++; size--; 296 } 297 298 dribble = size % 2; 299 bus_space_write_region_2(sc->bt, sc->bh, offset, (u_int16_t *)bptr, 300 size >> 1); 301 if (dribble) { 302 bptr += size - 1; 303 offset += size - 1; 304 bus_space_write_1(sc->bt, sc->bh, offset, *bptr); 305 } 306 307 bus_space_barrier(sc->bt, sc->bh, ooffset, osize, 308 BUS_SPACE_BARRIER_WRITE); 309 } 310 311 static u_int16_t 312 ix_read_16 (sc, offset) 313 struct ie_softc *sc; 314 int offset; 315 { 316 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_READ); 317 return bus_space_read_2(sc->bt, sc->bh, offset); 318 } 319 320 static void 321 ix_write_16 (sc, offset, value) 322 struct ie_softc *sc; 323 int offset; 324 u_int16_t value; 325 { 326 bus_space_write_2(sc->bt, sc->bh, offset, value); 327 bus_space_barrier(sc->bt, sc->bh, offset, 2, BUS_SPACE_BARRIER_WRITE); 328 } 329 330 static void 331 ix_write_24 (sc, offset, addr) 332 struct ie_softc *sc; 333 int offset, addr; 334 { 335 bus_space_write_4(sc->bt, sc->bh, offset, addr + 336 (u_long) sc->sc_maddr - (u_long) sc->sc_iobase); 337 bus_space_barrier(sc->bt, sc->bh, offset, 4, BUS_SPACE_BARRIER_WRITE); 338 } 339 340 static void 341 ix_mediastatus(sc, ifmr) 342 struct ie_softc *sc; 343 struct ifmediareq *ifmr; 344 { 345 struct ifmedia *ifm = &sc->sc_media; 346 347 /* 348 * The currently selected media is always the active media. 349 */ 350 ifmr->ifm_active = ifm->ifm_cur->ifm_media; 351 } 352 353 int 354 ix_match(parent, cf, aux) 355 struct device *parent; 356 struct cfdata *cf; 357 void *aux; 358 { 359 int i; 360 int rv = 0; 361 bus_addr_t maddr; 362 bus_size_t msize; 363 u_short checksum = 0; 364 bus_space_handle_t ioh; 365 bus_space_tag_t iot; 366 u_int8_t val, bart_config; 367 u_short pg, adjust, decode, edecode; 368 u_short board_id, id_var1, id_var2, irq, irq_encoded; 369 struct isa_attach_args * const ia = aux; 370 short irq_translate[] = {0, 0x09, 0x03, 0x04, 0x05, 0x0a, 0x0b, 0}; 371 372 iot = ia->ia_iot; 373 374 if (bus_space_map(iot, ia->ia_iobase, 375 IX_IOSIZE, 0, &ioh) != 0) { 376 DPRINTF(("Can't map io space at 0x%x\n", ia->ia_iobase)); 377 return (0); 378 } 379 380 /* XXX: reset any ee16 at the current iobase */ 381 bus_space_write_1(iot, ioh, IX_ECTRL, IX_RESET_ASIC); 382 bus_space_write_1(iot, ioh, IX_ECTRL, 0); 383 delay(240); 384 385 /* now look for ee16. */ 386 board_id = id_var1 = id_var2 = 0; 387 for (i = 0; i < 4 ; i++) { 388 id_var1 = bus_space_read_1(iot, ioh, IX_ID_PORT); 389 id_var2 = ((id_var1 & 0x03) << 2); 390 board_id |= (( id_var1 >> 4) << id_var2); 391 } 392 393 if (board_id != IX_ID) { 394 DPRINTF(("BART ID mismatch (got 0x%04x, expected 0x%04x)\n", 395 board_id, IX_ID)); 396 goto out; 397 } 398 399 /* 400 * The shared RAM size and location of the EE16 is encoded into 401 * EEPROM location 6. The location of the first set bit tells us 402 * the memory address (0xc0000 + (0x4000 * FSB)), where FSB is the 403 * number of the first set bit. The zeroes are then shifted out, 404 * and the results is the memory size (1 = 16k, 3 = 32k, 7 = 48k, 405 * 0x0f = 64k). 406 * 407 * Examples: 408 * 0x3c -> 64k@0xc8000, 0x70 -> 48k@0xd0000, 0xc0 -> 32k@0xd8000 409 * 0x80 -> 16k@0xdc000. 410 * 411 * Side note: this comes from reading the old driver rather than 412 * from a more definitive source, so it could be out-of-whack 413 * with what the card can do... 414 */ 415 416 val = ix_read_eeprom(iot, ioh, 6) & 0xff; 417 DPRINTF(("memory config: 0x%02x\n", val)); 418 419 for(i = 0; i < 8; i++) { 420 if (val & 1) 421 break; 422 val = val >> 1; 423 } 424 425 if (i == 8) { 426 DPRINTF(("Invalid or unsupported memory config\n")); 427 goto out; 428 } 429 430 maddr = 0xc0000 + (i * 0x4000); 431 432 switch (val) { 433 case 0x01: 434 msize = 16 * 1024; 435 break; 436 437 case 0x03: 438 msize = 32 * 1024; 439 break; 440 441 case 0x07: 442 msize = 48 * 1024; 443 break; 444 445 case 0x0f: 446 msize = 64 * 1024; 447 break; 448 449 default: 450 DPRINTF(("invalid memory size %02x\n", val)); 451 goto out; 452 } 453 454 if (ia->ia_maddr == ISACF_IOMEM_DEFAULT) 455 ia->ia_maddr = maddr; 456 else if (ia->ia_maddr != maddr) { 457 DPRINTF(( 458 "ix_match: memaddr of board @ 0x%x doesn't match config\n", 459 ia->ia_iobase)); 460 goto out; 461 } 462 463 if (ia->ia_msize == ISACF_IOSIZ_DEFAULT) 464 ia->ia_msize = msize; 465 else if (ia->ia_msize != msize) { 466 DPRINTF(( 467 "ix_match: memsize of board @ 0x%x doesn't match config\n", 468 ia->ia_iobase)); 469 goto out; 470 } 471 472 DPRINTF(("found %d byte memory region at %x\n", 473 ia->ia_msize, ia->ia_maddr)); 474 475 /* need to put the 586 in RESET, and leave it */ 476 bus_space_write_1(iot, ioh, IX_ECTRL, IX_RESET_586); 477 478 /* read the eeprom and checksum it, should == IX_ID */ 479 for(i = 0; i < 0x40; i++) 480 checksum += ix_read_eeprom(iot, ioh, i); 481 482 if (checksum != IX_ID) { 483 DPRINTF(("checksum mismatch (got 0x%04x, expected 0x%04x\n", 484 checksum, IX_ID)); 485 goto out; 486 } 487 488 /* 489 * Size and test the memory on the board. The size of the memory 490 * can be one of 16k, 32k, 48k or 64k. It can be located in the 491 * address range 0xC0000 to 0xEFFFF on 16k boundaries. 492 */ 493 pg = (ia->ia_maddr & 0x3C000) >> 14; 494 adjust = IX_MCTRL_FMCS16 | (pg & 0x3) << 2; 495 decode = ((1 << (ia->ia_msize / 16384)) - 1) << pg; 496 edecode = ((~decode >> 4) & 0xF0) | (decode >> 8); 497 498 /* ZZZ This should be checked against eeprom location 6, low byte */ 499 bus_space_write_1(iot, ioh, IX_MEMDEC, decode & 0xFF); 500 501 /* ZZZ This should be checked against eeprom location 1, low byte */ 502 bus_space_write_1(iot, ioh, IX_MCTRL, adjust); 503 504 /* ZZZ Now if I could find this one I would have it made */ 505 bus_space_write_1(iot, ioh, IX_MPCTRL, (~decode & 0xFF)); 506 507 /* ZZZ I think this is location 6, high byte */ 508 bus_space_write_1(iot, ioh, IX_MECTRL, edecode); /*XXX disable Exxx */ 509 510 /* 511 * Get the encoded interrupt number from the EEPROM, check it 512 * against the passed in IRQ. Issue a warning if they do not 513 * match, and fail the probe. If irq is 'IRQUNK' then we 514 * use the EEPROM irq, and continue. 515 */ 516 irq_encoded = ix_read_eeprom(iot, ioh, IX_EEPROM_CONFIG1); 517 irq_encoded = (irq_encoded & IX_EEPROM_IRQ) >> IX_EEPROM_IRQ_SHIFT; 518 irq = irq_translate[irq_encoded]; 519 if (ia->ia_irq == ISACF_IRQ_DEFAULT) 520 ia->ia_irq = irq; 521 else if (irq != ia->ia_irq) { 522 DPRINTF(("board IRQ %d does not match config\n", irq)); 523 goto out; 524 } 525 526 /* disable the board interrupts */ 527 bus_space_write_1(iot, ioh, IX_IRQ, irq_encoded); 528 529 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 530 bart_config |= IX_BART_LOOPBACK; 531 bart_config |= IX_BART_MCS16_TEST; /* inb doesn't get bit! */ 532 bus_space_write_1(iot, ioh, IX_CONFIG, bart_config); 533 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 534 535 bus_space_write_1(iot, ioh, IX_ECTRL, 0); 536 delay(100); 537 538 rv = 1; 539 ia->ia_iosize = IX_IOSIZE; 540 DPRINTF(("ix_match: found board @ 0x%x\n", ia->ia_iobase)); 541 542 out: 543 bus_space_unmap(iot, ioh, IX_IOSIZE); 544 return (rv); 545 } 546 547 void 548 ix_attach(parent, self, aux) 549 struct device *parent; 550 struct device *self; 551 void *aux; 552 { 553 struct ix_softc *isc = (void *)self; 554 struct ie_softc *sc = &isc->sc_ie; 555 struct isa_attach_args *ia = aux; 556 557 int media; 558 u_short eaddrtemp; 559 u_int8_t bart_config; 560 bus_space_tag_t iot; 561 bus_space_handle_t ioh, memh; 562 u_short irq_encoded; 563 u_int8_t ethaddr[ETHER_ADDR_LEN]; 564 565 iot = ia->ia_iot; 566 567 if (bus_space_map(iot, ia->ia_iobase, 568 ia->ia_iosize, 0, &ioh) != 0) { 569 570 DPRINTF(("\n%s: can't map i/o space 0x%x-0x%x\n", 571 sc->sc_dev.dv_xname, ia->ia_iobase, 572 ia->ia_iobase + ia->ia_iosize - 1)); 573 return; 574 } 575 576 if (bus_space_map(ia->ia_memt, ia->ia_maddr, 577 ia->ia_msize, 0, &memh) != 0) { 578 579 DPRINTF(("\n%s: can't map iomem space 0x%x-0x%x\n", 580 sc->sc_dev.dv_xname, ia->ia_maddr, 581 ia->ia_maddr + ia->ia_msize - 1)); 582 bus_space_unmap(iot, ioh, ia->ia_iosize); 583 return; 584 } 585 586 isc->sc_regt = iot; 587 isc->sc_regh = ioh; 588 589 /* 590 * Get the hardware ethernet address from the EEPROM and 591 * save it in the softc for use by the 586 setup code. 592 */ 593 eaddrtemp = ix_read_eeprom(iot, ioh, IX_EEPROM_ENET_HIGH); 594 ethaddr[1] = eaddrtemp & 0xFF; 595 ethaddr[0] = eaddrtemp >> 8; 596 eaddrtemp = ix_read_eeprom(iot, ioh, IX_EEPROM_ENET_MID); 597 ethaddr[3] = eaddrtemp & 0xFF; 598 ethaddr[2] = eaddrtemp >> 8; 599 eaddrtemp = ix_read_eeprom(iot, ioh, IX_EEPROM_ENET_LOW); 600 ethaddr[5] = eaddrtemp & 0xFF; 601 ethaddr[4] = eaddrtemp >> 8; 602 603 sc->hwinit = NULL; 604 sc->hwreset = ix_reset; 605 sc->chan_attn = ix_atten; 606 sc->intrhook = ix_intrhook; 607 608 sc->memcopyin = ix_copyin; 609 sc->memcopyout = ix_copyout; 610 sc->ie_bus_read16 = ix_read_16; 611 sc->ie_bus_write16 = ix_write_16; 612 sc->ie_bus_write24 = ix_write_24; 613 614 sc->do_xmitnopchain = 0; 615 616 sc->sc_mediachange = NULL; 617 sc->sc_mediastatus = ix_mediastatus; 618 619 sc->bt = ia->ia_memt; 620 sc->bh = memh; 621 622 /* Map i/o space. */ 623 sc->sc_msize = ia->ia_msize; 624 sc->sc_maddr = (void *)memh; 625 sc->sc_iobase = (char *)sc->sc_maddr + sc->sc_msize - (1 << 24); 626 627 /* set up pointers to important on-card control structures */ 628 sc->iscp = 0; 629 sc->scb = IE_ISCP_SZ; 630 sc->scp = sc->sc_msize + IE_SCP_ADDR - (1 << 24); 631 632 sc->buf_area = sc->scb + IE_SCB_SZ; 633 sc->buf_area_sz = sc->sc_msize - IE_ISCP_SZ - IE_SCB_SZ - IE_SCP_SZ; 634 635 /* zero card memory */ 636 bus_space_set_region_1(sc->bt, sc->bh, 0, 0, 32); 637 bus_space_set_region_1(sc->bt, sc->bh, 0, 0, sc->sc_msize); 638 639 /* set card to 16-bit bus mode */ 640 bus_space_write_1(sc->bt, sc->bh, IE_SCP_BUS_USE((u_long)sc->scp), 0); 641 642 /* set up pointers to key structures */ 643 ix_write_24(sc, IE_SCP_ISCP((u_long)sc->scp), (u_long) sc->iscp); 644 ix_write_16(sc, IE_ISCP_SCB((u_long)sc->iscp), (u_long) sc->scb); 645 ix_write_24(sc, IE_ISCP_BASE((u_long)sc->iscp), (u_long) sc->iscp); 646 647 /* flush setup of pointers, check if chip answers */ 648 bus_space_barrier(sc->bt, sc->bh, 0, sc->sc_msize, 649 BUS_SPACE_BARRIER_WRITE); 650 if (!i82586_proberam(sc)) { 651 DPRINTF(("\n%s: Can't talk to i82586!\n", 652 sc->sc_dev.dv_xname)); 653 bus_space_unmap(iot, ioh, ia->ia_iosize); 654 bus_space_unmap(ia->ia_memt, memh, ia->ia_msize); 655 return; 656 } 657 658 /* Figure out which media is being used... */ 659 if (ix_read_eeprom(iot, ioh, IX_EEPROM_CONFIG1) & 660 IX_EEPROM_MEDIA_EXT) { 661 if (ix_read_eeprom(iot, ioh, IX_EEPROM_MEDIA) & 662 IX_EEPROM_MEDIA_TP) 663 media = IFM_ETHER | IFM_10_T; 664 else 665 media = IFM_ETHER | IFM_10_2; 666 } else 667 media = IFM_ETHER | IFM_10_5; 668 669 /* Take the card out of lookback */ 670 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 671 bart_config &= ~IX_BART_LOOPBACK; 672 bart_config |= IX_BART_MCS16_TEST; /* inb doesn't get bit! */ 673 bus_space_write_1(iot, ioh, IX_CONFIG, bart_config); 674 bart_config = bus_space_read_1(iot, ioh, IX_CONFIG); 675 676 irq_encoded = ix_read_eeprom(iot, ioh, 677 IX_EEPROM_CONFIG1); 678 irq_encoded = (irq_encoded & IX_EEPROM_IRQ) >> IX_EEPROM_IRQ_SHIFT; 679 680 /* Enable interrupts */ 681 bus_space_write_1(iot, ioh, IX_IRQ, 682 irq_encoded | IX_IRQ_ENABLE); 683 684 isc->irq_encoded = irq_encoded; 685 686 i82586_attach(sc, "EtherExpress/16", ethaddr, 687 ix_media, NIX_MEDIA, media); 688 689 isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 690 IPL_NET, i82586_intr, sc); 691 if (isc->sc_ih == NULL) 692 DPRINTF(("\n%s: can't establish interrupt\n", 693 sc->sc_dev.dv_xname)); 694 } 695 696 struct cfattach ix_ca = { 697 sizeof(struct ix_softc), ix_match, ix_attach 698 }; 699
Indexes created Thu Oct 02 01:09:59 GMT 2025