pnpbios.c revision 1.5
1 /* $NetBSD: pnpbios.c,v 1.5 1999/11/19 02:40:25 matt Exp $ */ 2 /* 3 * Copyright (c) 1999 4 * Matthias Drochner. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions, and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/param.h> 29 #include <sys/systm.h> 30 #include <sys/device.h> 31 #include <sys/malloc.h> 32 #include <dev/isa/isareg.h> 33 #include <machine/isa_machdep.h> 34 #include <machine/segments.h> 35 #include <vm/vm.h> 36 #include <vm/vm_kern.h> 37 38 #include <arch/i386/pnpbios/pnpbiosvar.h> 39 40 #include "opt_pnpbiosverbose.h" 41 #include "isadma.h" 42 #include "locators.h" 43 44 struct pnpbios_softc { 45 struct device sc_dev; 46 isa_chipset_tag_t sc_ic; 47 }; 48 49 static caddr_t pnpbios_find __P((void)); 50 static int pnpbios_match __P((struct device *, struct cfdata *, void *)); 51 static void pnpbios_attach __P((struct device *, struct device *, void *)); 52 static void pnpbios_printres __P((struct pnpresources *)); 53 static int pnpbios_print __P((void *, const char *)); 54 static int pnpbios_getnumnodes __P((int *, size_t *)); 55 static int pnpbios_getnode __P((int, int *, unsigned char *, size_t)); 56 static void eisaid_to_string __P((unsigned char *, char *)); 57 static void pnpbios_attachnode __P((struct pnpbios_softc *, int, 58 unsigned char *, size_t)); 59 static int pnp_scan __P((unsigned char **, size_t, struct pnpresources *, int)); 60 61 static int pnpbios_submatch __P((struct device *, struct cfdata *, void *)); 62 63 extern int pnpbioscall __P((int)); 64 65 struct cfattach pnpbios_ca = { 66 sizeof(struct pnpbios_softc), pnpbios_match, pnpbios_attach 67 }; 68 69 /* 70 * Private stack and return value buffer. Spec (1.0a, ch. 4.3) says that 71 * 1024 bytes must be available to the BIOS function. 72 */ 73 #define PNPBIOS_BUFSIZE 4096 74 75 int pnpbios_enabled = 1; 76 size_t pnpbios_entry; 77 caddr_t pnpbios_scratchbuf; 78 79 /* 80 * There can be only one of these, and the i386 ISA code needs to 81 * reference this. 82 */ 83 struct pnpbios_softc *pnpbios_softc; 84 85 #define PNPBIOS_SIGNATURE ('$' | ('P' << 8) | ('n' << 16) | ('P' << 24)) 86 87 static caddr_t 88 pnpbios_find() 89 { 90 caddr_t p, c; 91 unsigned char cksum; 92 size_t structlen; 93 94 for (p = (caddr_t)ISA_HOLE_VADDR(0xf0000); 95 p <= (caddr_t)ISA_HOLE_VADDR(0xffff0); 96 p += 16) { 97 if (*(int *)p != PNPBIOS_SIGNATURE) 98 continue; 99 structlen = *(unsigned char *)(p + 5); 100 if ((structlen < 0x21) || 101 ((p + structlen - 1) > (caddr_t)ISA_HOLE_VADDR(0xfffff))) 102 continue; 103 104 cksum = 0; 105 for (c = p; c < p + structlen; c++) 106 cksum += *(unsigned char *)c; 107 if (cksum != 0) 108 continue; 109 110 if (*(char *)(p + 4) != 0x10) { 111 printf("unknown version %x\n", *(char *)(p + 4)); 112 continue; 113 } 114 115 return (p); 116 } 117 118 return (0); 119 } 120 121 int 122 pnpbios_probe() 123 { 124 125 return (pnpbios_find() != 0); 126 } 127 128 static int 129 pnpbios_match(parent, match, aux) 130 struct device *parent; 131 struct cfdata *match; 132 void *aux; 133 { 134 struct pnpbios_attach_args *paa = aux; 135 136 /* These are not the droids you're looking for. */ 137 if (strcmp(paa->paa_busname, "pnpbios") != 0) 138 return (0); 139 140 /* There can be only one! */ 141 if (pnpbios_softc != NULL) 142 return (0); 143 144 return (pnpbios_enabled); 145 } 146 147 static caddr_t mapit __P((u_long, u_long, int)); 148 149 static caddr_t 150 mapit(addr, len, prot) 151 u_long addr, len; 152 int prot; 153 { 154 u_long startpa, pa, endpa; 155 vaddr_t startva, va; 156 157 pa = startpa = i386_trunc_page(addr); 158 endpa = i386_round_page(addr + len); 159 160 va = startva = uvm_km_valloc(kernel_map, endpa - startpa); 161 if (!startva) 162 return (0); 163 for (; pa < endpa; pa += NBPG, va += NBPG) 164 pmap_kenter_pa(va, pa, prot); 165 166 return ((caddr_t)(startva + (addr - startpa))); 167 } 168 169 static void 170 pnpbios_attach(parent, self, aux) 171 struct device *parent, *self; 172 void *aux; 173 { 174 struct pnpbios_softc *sc = (struct pnpbios_softc *)self; 175 struct pnpbios_attach_args *paa = aux; 176 caddr_t p; 177 unsigned int codepbase, datapbase; 178 caddr_t codeva, datava; 179 extern char pnpbiostramp[], epnpbiostramp[]; 180 int res, num, i, size, idx; 181 unsigned char *buf; 182 183 pnpbios_softc = sc; 184 sc->sc_ic = paa->paa_ic; 185 186 #if NISADMA > 0 187 isa_dmainit(sc->sc_ic, I386_BUS_SPACE_IO, &isa_bus_dma_tag, self); 188 #endif 189 190 p = pnpbios_find(); 191 if (!p) 192 panic("pnpbios_attach: disappeared"); 193 194 codepbase = *(unsigned int *)(p + 0x13); 195 datapbase = *(unsigned int *)(p + 0x1d); 196 pnpbios_entry = *(unsigned short *)(p + 0x11); 197 198 #ifdef PNPBIOSVERBOSE 199 printf(": code %x, data %x, entry %x\n%s", 200 codepbase, datapbase, pnpbios_entry, self->dv_xname); 201 #endif 202 203 codeva = mapit(codepbase, 0x10000, 204 VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE); 205 datava = mapit(datapbase, 0x10000, 206 VM_PROT_READ | VM_PROT_WRITE); 207 if (codeva == 0 || datava == 0) { 208 printf("no vm for mapping\n"); 209 return; 210 } 211 pnpbios_scratchbuf = malloc(PNPBIOS_BUFSIZE, M_DEVBUF, M_NOWAIT); 212 213 setsegment(&gdt[GPNPBIOSCODE_SEL].sd, codeva, 0xffff, 214 SDT_MEMERA, SEL_KPL, 0, 0); 215 setsegment(&gdt[GPNPBIOSDATA_SEL].sd, datava, 0xffff, 216 SDT_MEMRWA, SEL_KPL, 0, 0); 217 setsegment(&gdt[GPNPBIOSSCRATCH_SEL].sd, 218 pnpbios_scratchbuf, PNPBIOS_BUFSIZE - 1, 219 SDT_MEMRWA, SEL_KPL, 0, 0); 220 setsegment(&gdt[GPNPBIOSTRAMP_SEL].sd, 221 pnpbiostramp, epnpbiostramp - pnpbiostramp - 1, 222 SDT_MEMERA, SEL_KPL, 1, 0); 223 224 res = pnpbios_getnumnodes(&num, &size); 225 if (res) { 226 printf("pnpbios_getnumnodes: error %d\n", res); 227 return; 228 } 229 230 printf(": %d nodes, max len %d\n", num, size); 231 buf = malloc(size, M_DEVBUF, M_NOWAIT); 232 233 idx = 0; 234 for (i = 0; i < num; i++) { 235 int node = idx; 236 res = pnpbios_getnode(1, &idx, buf, size); 237 if (res) { 238 printf("pnpbios_getnode: error %d\n", res); 239 continue; 240 } 241 if (buf[2] != node) 242 printf("node idx: called %d, got %d\n", node, buf[2]); 243 pnpbios_attachnode(sc, node, buf, buf[0] + (buf[1] << 8)); 244 } 245 if (idx != 0xff) 246 printf("last idx=%x\n", idx); 247 248 free(buf, M_DEVBUF); 249 } 250 251 static int 252 pnpbios_getnumnodes(nump, sizep) 253 int *nump; 254 size_t *sizep; 255 { 256 int res; 257 short *help = (short *)(pnpbios_scratchbuf + PNPBIOS_BUFSIZE); 258 259 *--help = GSEL(GPNPBIOSDATA_SEL, SEL_KPL); 260 *--help = GSEL(GPNPBIOSSCRATCH_SEL, SEL_KPL); 261 *--help = 2; /* buffer offset for node size */ 262 *--help = GSEL(GPNPBIOSSCRATCH_SEL, SEL_KPL); 263 *--help = 0; /* buffer offset for numnodes */ 264 *--help = 0; /* GET_NUM_NODES */ 265 266 res = pnpbioscall(((caddr_t)help) - pnpbios_scratchbuf); 267 if (res) 268 return (res); 269 270 *nump = *(short *)(pnpbios_scratchbuf + 0); 271 *sizep = *(short *)(pnpbios_scratchbuf + 2); 272 return (0); 273 } 274 275 static int 276 pnpbios_getnode(flags, idxp, buf, len) 277 int flags; 278 int *idxp; 279 unsigned char *buf; 280 size_t len; 281 { 282 int res; 283 short *help = (short *)(pnpbios_scratchbuf + PNPBIOS_BUFSIZE); 284 285 *--help = GSEL(GPNPBIOSDATA_SEL, SEL_KPL); 286 *--help = flags; 287 *--help = GSEL(GPNPBIOSSCRATCH_SEL, SEL_KPL); 288 *--help = 2; /* buffer offset for node data */ 289 *--help = GSEL(GPNPBIOSSCRATCH_SEL, SEL_KPL); 290 *--help = 0; /* buffer offset for index in/out */ 291 *--help = 1; /* GET_DEVICE_NODE */ 292 293 *(short *)(pnpbios_scratchbuf + 0) = *idxp; 294 295 res = pnpbioscall(((caddr_t)help) - pnpbios_scratchbuf); 296 if (res) 297 return (res); 298 299 *idxp = *(short *)(pnpbios_scratchbuf + 0); 300 bcopy(pnpbios_scratchbuf + 2, buf, len); 301 return (0); 302 } 303 304 static void 305 eisaid_to_string(id, s) 306 unsigned char *id; 307 char *s; 308 { 309 static char hex[] = "0123456789ABCDEF"; 310 311 *s++ = 'A' + (id[0] >> 2) - 1; 312 *s++ = 'A' + ((id[0] & 3) << 3) + (id[1] >> 5) - 1; 313 *s++ = 'A' + (id[1] & 0x1f) - 1; 314 *s++ = hex[id[2] >> 4]; 315 *s++ = hex[id[2] & 0x0f]; 316 *s++ = hex[id[3] >> 4]; 317 *s++ = hex[id[3] & 0x0f]; 318 *s = '\0'; 319 } 320 321 static void 322 pnpbios_printres(r) 323 struct pnpresources *r; 324 { 325 struct pnp_mem *mem; 326 struct pnp_io *io; 327 struct pnp_irq *irq; 328 struct pnp_dma *dma; 329 int p = 0; 330 331 mem = SIMPLEQ_FIRST(&r->mem); 332 if (mem) { 333 printf("mem"); 334 do { 335 printf(" %x", mem->minbase); 336 if (mem->len > 1) 337 printf("-%x", mem->minbase + mem->len - 1); 338 } while ((mem = SIMPLEQ_NEXT(mem, next))); 339 p++; 340 } 341 io = SIMPLEQ_FIRST(&r->io); 342 if (io) { 343 if (p++) 344 printf(", "); 345 printf("io"); 346 do { 347 printf(" %x", io->minbase); 348 if (io->len > 1) 349 printf("-%x", io->minbase + io->len - 1); 350 } while ((io = SIMPLEQ_NEXT(io, next))); 351 } 352 irq = SIMPLEQ_FIRST(&r->irq); 353 if (irq) { 354 if (p++) 355 printf(", "); 356 printf("irq"); 357 do { 358 printf(" %d", ffs(irq->mask) - 1); 359 } while ((irq = SIMPLEQ_NEXT(irq, next))); 360 } 361 dma = SIMPLEQ_FIRST(&r->dma); 362 if (dma) { 363 if (p) 364 printf(", "); 365 printf("dma"); 366 do { 367 printf(" %d", ffs(dma->mask) - 1); 368 } while ((dma = SIMPLEQ_NEXT(dma, next))); 369 } 370 } 371 372 static int 373 pnpbios_print(aux, pnp) 374 void *aux; 375 const char *pnp; 376 { 377 struct pnpbiosdev_attach_args *aa = aux; 378 379 if (pnp) 380 return (QUIET); 381 382 printf(" index %d (%s", aa->idx, aa->primid); 383 if (aa->resc->longname) 384 printf(", %s", aa->resc->longname); 385 if (aa->idstr != aa->primid) 386 printf(", attached as %s", aa->idstr); 387 printf(")"); 388 389 return (0); 390 } 391 392 void 393 pnpbios_print_devres(dev, aa) 394 struct device *dev; 395 struct pnpbiosdev_attach_args *aa; 396 { 397 398 printf("%s: ", dev->dv_xname); 399 pnpbios_printres(aa->resc); 400 printf("\n"); 401 } 402 403 static int 404 pnpbios_submatch(parent, match, aux) 405 struct device *parent; 406 struct cfdata *match; 407 void *aux; 408 { 409 struct pnpbiosdev_attach_args *aa = aux; 410 411 if (match->cf_loc[PNPBIOSCF_INDEX] != PNPBIOSCF_INDEX_DEFAULT && 412 match->cf_loc[PNPBIOSCF_INDEX] != aa->idx) 413 return (0); 414 415 return ((*match->cf_attach->ca_match)(parent, match, aux)); 416 } 417 418 static void 419 pnpbios_attachnode(sc, idx, buf, len) 420 struct pnpbios_softc *sc; 421 int idx; 422 unsigned char *buf; 423 size_t len; 424 { 425 char idstr[8]; 426 unsigned char *p; 427 int res; 428 struct pnpresources r, s; 429 int i; 430 struct pnpbiosdev_attach_args aa; 431 struct pnp_compatid *compatid; 432 433 eisaid_to_string(buf + 3, idstr); 434 p = buf + 12; 435 436 res = pnp_scan(&p, len - 12, &r, 0); 437 if (res < 0) { 438 printf("error in config data\n"); 439 goto dump; 440 } 441 442 /* 443 * the following is consistency check only for now 444 */ 445 res = pnp_scan(&p, len - (p - buf), &s, 0); 446 if (res < 0) { 447 printf("error in possible configuration\n"); 448 goto dump; 449 } 450 451 res = pnp_scan(&p, len - (p - buf), &s, 0); 452 if (res < 0) { 453 printf("error in compatible ID\n"); 454 goto dump; 455 } 456 457 if (p != buf + len) { 458 printf("length mismatch\n"); 459 goto dump; 460 } 461 462 aa.pbt = 0; /* XXX placeholder */ 463 aa.idx = idx; 464 aa.resc = &r; 465 aa.ic = sc->sc_ic; 466 aa.primid = idstr; 467 468 /* first try the specific device ID */ 469 aa.idstr = idstr; 470 if (config_found_sm((struct device *)sc, &aa, pnpbios_print, 471 pnpbios_submatch)) 472 return; 473 474 /* if no driver was found, try compatible IDs */ 475 compatid = s.compatids; 476 while (compatid) { 477 aa.idstr = compatid->idstr; 478 if (config_found_sm((struct device *)sc, &aa, pnpbios_print, 479 pnpbios_submatch)) 480 return; 481 compatid = compatid->next; 482 } 483 484 #ifdef PNPBIOSVERBOSE 485 printf("%s", idstr); 486 if (r.longname) 487 printf(", %s", r.longname); 488 compatid = s.compatids; 489 while (compatid) { 490 printf(", %s", compatid->idstr); 491 compatid = compatid->next; 492 } 493 printf(" ("); 494 pnpbios_printres(&r); 495 printf(") at %s index %d ignored\n", sc->sc_dev.dv_xname, idx); 496 #endif 497 498 return; 499 500 /* XXX should free ressource lists */ 501 502 dump: 503 for (i = 0; i < len; i++) 504 printf(" %02x", buf[i]); 505 printf("\n"); 506 } 507 508 static int pnp_compatid __P((struct pnpresources *, unsigned char *, size_t)); 509 static int pnp_newirq __P((struct pnpresources *, unsigned char *, size_t)); 510 static int pnp_newdma __P((struct pnpresources *, unsigned char *, size_t)); 511 static int pnp_newioport __P((struct pnpresources *, unsigned char *, size_t)); 512 513 /* 514 * small ressource types (beginning with 1) 515 */ 516 static struct{ 517 int (*handler) __P((struct pnpresources *, unsigned char *, size_t)); 518 int minlen, maxlen; 519 } smallrescs[] = { 520 {0, 2, 2}, /* PnP version number */ 521 {0, 5, 6}, /* logical device id */ 522 {pnp_compatid, 4, 4}, /* compatible device id */ 523 {pnp_newirq, 2, 3}, /* irq descriptor */ 524 {pnp_newdma, 2, 2}, /* dma descriptor */ 525 {0, 0, 1}, /* start dep */ 526 {0, 0, 0}, /* end dep */ 527 {pnp_newioport, 7, 7}, /* io descriptor */ 528 {0, 3, 3}, /* fixed io descriptor */ 529 {0, -1, -1}, /* reserved */ 530 {0, -1, -1}, 531 {0, -1, -1}, 532 {0, -1, -1}, 533 {0, 1, 7}, /* vendor defined */ 534 {0, 1, 1} /* end */ 535 }; 536 537 #define NEXTBYTE(p) (*(p)++) 538 539 static int 540 pnp_scan(bufp, maxlen, r, in_depends) 541 unsigned char **bufp; 542 size_t maxlen; 543 struct pnpresources *r; 544 int in_depends; 545 { 546 unsigned char *p = *bufp; 547 int tag, type, len; 548 char *idstr; 549 int i; 550 struct pnp_mem *mem; 551 552 bzero(r, sizeof(*r)); 553 SIMPLEQ_INIT(&r->mem); 554 SIMPLEQ_INIT(&r->io); 555 SIMPLEQ_INIT(&r->irq); 556 SIMPLEQ_INIT(&r->dma); 557 558 for (;;) { 559 if (p >= *bufp + maxlen) { 560 printf("pnp_scanresources: end of buffer\n"); 561 return (-1); 562 } 563 tag = NEXTBYTE(p); 564 565 if (tag & 0x80) { /* long tag */ 566 type = tag & 0x7f; 567 len = NEXTBYTE(p); 568 len |= NEXTBYTE(p) << 8; 569 570 switch (type) { 571 case 0x01: /* memory descriptor */ 572 if (len != 9) { 573 printf("pnp_scan: bad mem desc\n"); 574 return (-1); 575 } 576 577 mem = malloc(sizeof(struct pnp_mem), 578 M_DEVBUF, M_WAITOK); 579 mem->flags = NEXTBYTE(p); 580 mem->minbase = NEXTBYTE(p) << 8; 581 mem->minbase |= NEXTBYTE(p) << 16; 582 mem->maxbase = NEXTBYTE(p) << 8; 583 mem->maxbase |= NEXTBYTE(p) << 16; 584 mem->align = NEXTBYTE(p); 585 mem->align |= NEXTBYTE(p) << 8; 586 if (mem->align == 0) 587 mem->align = 0x10000; 588 mem->len = NEXTBYTE(p) << 8; 589 mem->len |= NEXTBYTE(p) << 16; 590 SIMPLEQ_INSERT_TAIL(&r->mem, mem, next); 591 r->nummem++; 592 #ifdef PNPBIOSDEBUG 593 if (mem->len == 0) 594 printf("ZERO mem descriptor\n"); 595 #endif 596 break; 597 case 0x02: 598 if (in_depends) 599 printf("ID in dep?\n"); 600 idstr = malloc(len + 1, M_DEVBUF, M_NOWAIT); 601 for (i = 0; i < len; i++) 602 idstr[i] = NEXTBYTE(p); 603 idstr[len] = '\0'; 604 r->longname = idstr; 605 break; 606 case 0x06: /* 32bit fixed memory descriptor */ 607 if (len != 9) { 608 printf("pnp_scan: bad mem32 desc\n"); 609 return (-1); 610 } 611 612 mem = malloc(sizeof(struct pnp_mem), 613 M_DEVBUF, M_WAITOK); 614 mem->flags = NEXTBYTE(p); 615 mem->minbase = NEXTBYTE(p); 616 mem->minbase |= NEXTBYTE(p) << 8; 617 mem->minbase |= NEXTBYTE(p) << 16; 618 mem->minbase |= NEXTBYTE(p) << 24; 619 mem->maxbase = mem->minbase; 620 mem->align = 0; 621 mem->len = NEXTBYTE(p); 622 mem->len |= NEXTBYTE(p) << 8; 623 mem->len |= NEXTBYTE(p) << 16; 624 mem->len |= NEXTBYTE(p) << 24; 625 SIMPLEQ_INSERT_TAIL(&r->mem, mem, next); 626 r->nummem++; 627 #ifdef PNPBIOSDEBUG 628 if (mem->len == 0) 629 printf("ZERO mem descriptor\n"); 630 #endif 631 break; 632 default: 633 printf("ignoring long tag %x\n", type); 634 while (len--) 635 (void) NEXTBYTE(p); 636 } 637 } else { 638 unsigned char tmpbuf[7]; 639 int i; 640 641 type = (tag >> 3) & 0x0f; 642 len = tag & 0x07; 643 644 if (type == 0 || 645 len < smallrescs[type - 1].minlen || 646 len > smallrescs[type - 1].maxlen) { 647 printf("pnp_scan: bad small resource\n"); 648 return (-1); 649 } 650 for (i = 0; i < len; i++) 651 tmpbuf[i] = NEXTBYTE(p); 652 653 if (type == 0x0f) { /* end mark */ 654 if (in_depends) { 655 printf("end in dep?\n"); 656 return (-1); 657 } 658 break; 659 } 660 if (type == 0x06) { /* start dep */ 661 struct pnpresources *new, *last; 662 int res; 663 664 if (r->dependant_link) { 665 printf("second dep?\n"); 666 return (-1); 667 } 668 669 if (in_depends) { 670 *bufp = p; 671 return (1); 672 } 673 674 last = r; 675 do { 676 new = malloc(sizeof(*new), 677 M_DEVBUF, M_NOWAIT); 678 679 res = pnp_scan(&p, maxlen - (p - *bufp), 680 new, 1); 681 if (res < 0) { 682 printf("error in dependant function\n"); 683 free(new, M_DEVBUF); 684 return (-1); 685 } 686 687 last->dependant_link = new; 688 last = new; 689 } while (res > 0); 690 continue; 691 } 692 if (type == 0x07) { /* end dep */ 693 if (!in_depends) { 694 printf("end dep?\n"); 695 return (-1); 696 } 697 break; 698 } 699 700 if (!smallrescs[type - 1].handler) 701 printf("ignoring short tag %x\n", type); 702 else 703 if ((*smallrescs[type - 1].handler)(r, tmpbuf, 704 len)) 705 return (-1); 706 } 707 } 708 *bufp = p; 709 return (0); 710 } 711 712 static int 713 pnp_newirq(r, buf, len) 714 struct pnpresources *r; 715 unsigned char *buf; 716 size_t len; 717 { 718 struct pnp_irq *irq; 719 720 irq = malloc(sizeof(struct pnp_irq), M_DEVBUF, M_NOWAIT); 721 irq->mask = buf[0] | (buf[1] << 8); 722 if (len > 2) 723 irq->flags = buf[2]; 724 else 725 irq->flags = 0x01; 726 SIMPLEQ_INSERT_TAIL(&r->irq, irq, next); 727 r->numirq++; 728 return (0); 729 } 730 731 static int 732 pnp_newdma(r, buf, len) 733 struct pnpresources *r; 734 unsigned char *buf; 735 size_t len; 736 { 737 struct pnp_dma *dma; 738 739 dma = malloc(sizeof(struct pnp_dma), M_DEVBUF, M_NOWAIT); 740 dma->mask = buf[0]; 741 dma->flags = buf[1]; 742 SIMPLEQ_INSERT_TAIL(&r->dma, dma, next); 743 r->numdma++; 744 return (0); 745 } 746 747 static int 748 pnp_newioport(r, buf, len) 749 struct pnpresources *r; 750 unsigned char *buf; 751 size_t len; 752 { 753 struct pnp_io *io; 754 755 io = malloc(sizeof(struct pnp_io), M_DEVBUF, M_NOWAIT); 756 io->flags = buf[0]; 757 io->minbase = buf[1] | (buf[2] << 8); 758 io->maxbase = buf[3] | (buf[4] << 8); 759 io->align = buf[5]; 760 io->len = buf[6]; 761 SIMPLEQ_INSERT_TAIL(&r->io, io, next); 762 r->numio++; 763 return (0); 764 } 765 766 static int 767 pnp_compatid(r, buf, len) 768 struct pnpresources *r; 769 unsigned char *buf; 770 size_t len; 771 { 772 struct pnp_compatid *id; 773 774 id = malloc(sizeof(*id), M_DEVBUF, M_NOWAIT); 775 eisaid_to_string(buf, id->idstr); 776 id->next = r->compatids; 777 r->compatids = id; 778 return (0); 779 } 780 781 int 782 pnpbios_io_map(pbt, resc, idx, tagp, hdlp) 783 pnpbios_tag_t pbt; 784 struct pnpresources *resc; 785 int idx; 786 bus_space_tag_t *tagp; 787 bus_space_handle_t *hdlp; 788 { 789 struct pnp_io *io; 790 791 if (idx >= resc->numio) 792 return (EINVAL); 793 794 io = SIMPLEQ_FIRST(&resc->io); 795 while (idx--) 796 io = SIMPLEQ_NEXT(io, next); 797 798 *tagp = I386_BUS_SPACE_IO; 799 return (i386_memio_map(I386_BUS_SPACE_IO, io->minbase, io->len, 800 0, hdlp)); 801 } 802 803 int 804 pnpbios_getiobase(pbt, resc, idx, tagp, basep) 805 pnpbios_tag_t pbt; 806 struct pnpresources *resc; 807 int idx; 808 bus_space_tag_t *tagp; 809 int *basep; 810 { 811 struct pnp_io *io; 812 813 if (idx >= resc->numio) 814 return (EINVAL); 815 816 io = SIMPLEQ_FIRST(&resc->io); 817 while (idx--) 818 io = SIMPLEQ_NEXT(io, next); 819 820 if (tagp) 821 *tagp = I386_BUS_SPACE_IO; 822 if (basep) 823 *basep = io->minbase; 824 return (0); 825 } 826 827 void * 828 pnpbios_intr_establish(pbt, resc, idx, level, fcn, arg) 829 pnpbios_tag_t pbt; 830 struct pnpresources *resc; 831 int idx, level; 832 int (*fcn) __P((void *)); 833 void *arg; 834 { 835 struct pnp_irq *irq; 836 int irqnum, type; 837 838 if (idx >= resc->numirq) 839 return (0); 840 841 irq = SIMPLEQ_FIRST(&resc->irq); 842 while (idx--) 843 irq = SIMPLEQ_NEXT(irq, next); 844 845 irqnum = ffs(irq->mask) - 1; 846 type = (irq->flags & 0x0c) ? IST_LEVEL : IST_EDGE; 847 848 return (isa_intr_establish(0, irqnum, type, level, fcn, arg)); 849 } 850 851 int 852 pnpbios_getirqnum(pbt, resc, idx, irqp) 853 pnpbios_tag_t pbt; 854 struct pnpresources *resc; 855 int idx; 856 int *irqp; 857 { 858 struct pnp_irq *irq; 859 860 if (idx >= resc->numirq) 861 return (EINVAL); 862 863 irq = SIMPLEQ_FIRST(&resc->irq); 864 while (idx--) 865 irq = SIMPLEQ_NEXT(irq, next); 866 867 *irqp = ffs(irq->mask) - 1; 868 return (0); 869 } 870 871 int 872 pnpbios_getdmachan(pbt, resc, idx, chanp) 873 pnpbios_tag_t pbt; 874 struct pnpresources *resc; 875 int idx; 876 int *chanp; 877 { 878 struct pnp_dma *dma; 879 880 if (idx >= resc->numdma) 881 return (EINVAL); 882 883 dma = SIMPLEQ_FIRST(&resc->dma); 884 while (idx--) 885 dma = SIMPLEQ_NEXT(dma, next); 886 887 *chanp = ffs(dma->mask) - 1; 888 return (0); 889 } 890
Indexes created Tue Sep 30 11:09:46 GMT 2025