pnpbios.c revision 1.2
1 /* $NetBSD: pnpbios.c,v 1.2 1999/11/14 02:15:51 thorpej 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 "locators.h" 42 43 struct pnpbios_softc { 44 struct device sc_dev; 45 isa_chipset_tag_t sc_ic; 46 }; 47 48 static caddr_t pnpbios_find __P((void)); 49 static int pnpbios_match __P((struct device *, struct cfdata *, void *)); 50 static void pnpbios_attach __P((struct device *, struct device *, void *)); 51 static void pnpbios_printres __P((struct pnpresources *)); 52 static int pnpbios_print __P((void *, const char *)); 53 static int pnpbios_getnumnodes __P((int *, size_t *)); 54 static int pnpbios_getnode __P((int, int *, unsigned char *, size_t)); 55 static void eisaid_to_string __P((unsigned char *, char *)); 56 static void pnpbios_attachnode __P((struct pnpbios_softc *, int, 57 unsigned char *, size_t)); 58 static int pnp_scan __P((unsigned char **, size_t, struct pnpresources *, int)); 59 60 static int pnpbios_submatch __P((struct device *, struct cfdata *, void *)); 61 62 extern int pnpbioscall __P((int)); 63 64 struct cfattach pnpbios_ca = { 65 sizeof(struct pnpbios_softc), pnpbios_match, pnpbios_attach 66 }; 67 68 /* 69 * Private stack and return value buffer. Spec (1.0a, ch. 4.3) says that 70 * 1024 bytes must be available to the BIOS function. 71 */ 72 #define PNPBIOS_BUFSIZE 4096 73 74 int pnpbios_enabled = 1; 75 size_t pnpbios_entry; 76 caddr_t pnpbios_scratchbuf; 77 78 /* 79 * There can be only one of these, and the i386 ISA code needs to 80 * reference this. 81 */ 82 struct pnpbios_softc *pnpbios_softc; 83 84 #define PNPBIOS_SIGNATURE ('$' | ('P' << 8) | ('n' << 16) | ('P' << 24)) 85 86 static caddr_t 87 pnpbios_find() 88 { 89 caddr_t p, c; 90 unsigned char cksum; 91 size_t structlen; 92 93 for (p = (caddr_t)ISA_HOLE_VADDR(0xf0000); 94 p <= (caddr_t)ISA_HOLE_VADDR(0xffff0); 95 p += 16) { 96 if (*(int *)p != PNPBIOS_SIGNATURE) 97 continue; 98 structlen = *(unsigned char *)(p + 5); 99 if ((structlen < 0x21) || 100 ((p + structlen - 1) > (caddr_t)ISA_HOLE_VADDR(0xfffff))) 101 continue; 102 103 cksum = 0; 104 for (c = p; c < p + structlen; c++) 105 cksum += *(unsigned char *)c; 106 if (cksum != 0) 107 continue; 108 109 if (*(char *)(p + 4) != 0x10) { 110 printf("unknown version %x\n", *(char *)(p + 4)); 111 continue; 112 } 113 114 return (p); 115 } 116 117 return (0); 118 } 119 120 int 121 pnpbios_probe() 122 { 123 124 return (pnpbios_find() != 0); 125 } 126 127 static int 128 pnpbios_match(parent, match, aux) 129 struct device *parent; 130 struct cfdata *match; 131 void *aux; 132 { 133 struct pnpbios_attach_args *paa = aux; 134 135 /* These are not the droids you're looking for. */ 136 if (strcmp(paa->paa_busname, "pnpbios") != 0) 137 return (0); 138 139 /* There can be only one! */ 140 if (pnpbios_softc != NULL) 141 return (0); 142 143 return (pnpbios_enabled); 144 } 145 146 static caddr_t mapit __P((u_long, u_long, int)); 147 148 static caddr_t 149 mapit(addr, len, prot) 150 u_long addr, len; 151 int prot; 152 { 153 u_long startpa, pa, endpa; 154 vaddr_t startva, va; 155 156 pa = startpa = i386_trunc_page(addr); 157 endpa = i386_round_page(addr + len); 158 159 va = startva = uvm_km_valloc(kernel_map, endpa - startpa); 160 if (!startva) 161 return (0); 162 for (; pa < endpa; pa += NBPG, va += NBPG) 163 pmap_kenter_pa(va, pa, prot); 164 165 return ((caddr_t)(startva + (addr - startpa))); 166 } 167 168 static void 169 pnpbios_attach(parent, self, aux) 170 struct device *parent, *self; 171 void *aux; 172 { 173 struct pnpbios_softc *sc = (struct pnpbios_softc *)self; 174 struct pnpbios_attach_args *paa = aux; 175 caddr_t p; 176 unsigned int codepbase, datapbase; 177 caddr_t codeva, datava; 178 extern char pnpbiostramp[], epnpbiostramp[]; 179 int res, num, i, size, idx; 180 unsigned char *buf; 181 182 pnpbios_softc = sc; 183 sc->sc_ic = paa->paa_ic; 184 185 isa_dmainit(sc->sc_ic, I386_BUS_SPACE_IO, &isa_bus_dma_tag, self); 186 187 p = pnpbios_find(); 188 if (!p) 189 panic("pnpbios_attach: disappeared"); 190 191 codepbase = *(unsigned int *)(p + 0x13); 192 datapbase = *(unsigned int *)(p + 0x1d); 193 pnpbios_entry = *(unsigned short *)(p + 0x11); 194 195 #ifdef PNPBIOSVERBOSE 196 printf(": code %x, data %x, entry %x\n%s", 197 codepbase, datapbase, pnpbios_entry, self->dv_xname); 198 #endif 199 200 codeva = mapit(codepbase, 0x10000, 201 VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE); 202 datava = mapit(datapbase, 0x10000, 203 VM_PROT_READ | VM_PROT_WRITE); 204 if (codeva == 0 || datava == 0) { 205 printf("no vm for mapping\n"); 206 return; 207 } 208 pnpbios_scratchbuf = malloc(PNPBIOS_BUFSIZE, M_DEVBUF, M_NOWAIT); 209 210 setsegment(&gdt[GPNPBIOSCODE_SEL].sd, codeva, 0xffff, 211 SDT_MEMERA, SEL_KPL, 0, 0); 212 setsegment(&gdt[GPNPBIOSDATA_SEL].sd, datava, 0xffff, 213 SDT_MEMRWA, SEL_KPL, 0, 0); 214 setsegment(&gdt[GPNPBIOSSCRATCH_SEL].sd, 215 pnpbios_scratchbuf, PNPBIOS_BUFSIZE - 1, 216 SDT_MEMRWA, SEL_KPL, 0, 0); 217 setsegment(&gdt[GPNPBIOSTRAMP_SEL].sd, 218 pnpbiostramp, epnpbiostramp - pnpbiostramp - 1, 219 SDT_MEMERA, SEL_KPL, 1, 0); 220 221 res = pnpbios_getnumnodes(&num, &size); 222 if (res) { 223 printf("pnpbios_getnumnodes: error %d\n", res); 224 return; 225 } 226 227 printf(": %d nodes, max len %d\n", num, size); 228 buf = malloc(size, M_DEVBUF, M_NOWAIT); 229 230 idx = 0; 231 for (i = 0; i < num; i++) { 232 res = pnpbios_getnode(1, &idx, buf, size); 233 if (res) { 234 printf("pnpbios_getnode: error %d\n", res); 235 continue; 236 } 237 pnpbios_attachnode(sc, idx, buf, buf[0] + (buf[1] << 8)); 238 } 239 if (idx != 0xff) 240 printf("last idx=%x\n", idx); 241 242 free(buf, M_DEVBUF); 243 } 244 245 static int 246 pnpbios_getnumnodes(nump, sizep) 247 int *nump; 248 size_t *sizep; 249 { 250 int res; 251 short *help = (short *)(pnpbios_scratchbuf + PNPBIOS_BUFSIZE); 252 253 *--help = GSEL(GPNPBIOSDATA_SEL, SEL_KPL); 254 *--help = GSEL(GPNPBIOSSCRATCH_SEL, SEL_KPL); 255 *--help = 2; /* buffer offset for node size */ 256 *--help = GSEL(GPNPBIOSSCRATCH_SEL, SEL_KPL); 257 *--help = 0; /* buffer offset for numnodes */ 258 *--help = 0; /* GET_NUM_NODES */ 259 260 res = pnpbioscall(((caddr_t)help) - pnpbios_scratchbuf); 261 if (res) 262 return (res); 263 264 *nump = *(short *)(pnpbios_scratchbuf + 0); 265 *sizep = *(short *)(pnpbios_scratchbuf + 2); 266 return (0); 267 } 268 269 static int 270 pnpbios_getnode(flags, idxp, buf, len) 271 int flags; 272 int *idxp; 273 unsigned char *buf; 274 size_t len; 275 { 276 int res; 277 short *help = (short *)(pnpbios_scratchbuf + PNPBIOS_BUFSIZE); 278 279 *--help = GSEL(GPNPBIOSDATA_SEL, SEL_KPL); 280 *--help = flags; 281 *--help = GSEL(GPNPBIOSSCRATCH_SEL, SEL_KPL); 282 *--help = 2; /* buffer offset for node data */ 283 *--help = GSEL(GPNPBIOSSCRATCH_SEL, SEL_KPL); 284 *--help = 0; /* buffer offset for index in/out */ 285 *--help = 1; /* GET_DEVICE_NODE */ 286 287 *(short *)(pnpbios_scratchbuf + 0) = *idxp; 288 289 res = pnpbioscall(((caddr_t)help) - pnpbios_scratchbuf); 290 if (res) 291 return (res); 292 293 *idxp = *(short *)(pnpbios_scratchbuf + 0); 294 bcopy(pnpbios_scratchbuf + 2, buf, len); 295 return (0); 296 } 297 298 static void 299 eisaid_to_string(id, s) 300 unsigned char *id; 301 char *s; 302 { 303 static char hex[] = "0123456789ABCDEF"; 304 305 *s++ = 'A' + (id[0] >> 2) - 1; 306 *s++ = 'A' + ((id[0] & 3) << 3) + (id[1] >> 5) - 1; 307 *s++ = 'A' + (id[1] & 0x1f) - 1; 308 *s++ = hex[id[2] >> 4]; 309 *s++ = hex[id[2] & 0x0f]; 310 *s++ = hex[id[3] >> 4]; 311 *s++ = hex[id[3] & 0x0f]; 312 *s = '\0'; 313 } 314 315 static void 316 pnpbios_printres(r) 317 struct pnpresources *r; 318 { 319 struct pnp_mem *mem; 320 struct pnp_io *io; 321 struct pnp_irq *irq; 322 struct pnp_dma *dma; 323 int p = 0; 324 325 mem = SIMPLEQ_FIRST(&r->mem); 326 if (mem) { 327 printf("mem"); 328 do { 329 printf(" %x", mem->minbase); 330 if (mem->len > 1) 331 printf("-%x", mem->minbase + mem->len - 1); 332 } while ((mem = SIMPLEQ_NEXT(mem, next))); 333 p++; 334 } 335 io = SIMPLEQ_FIRST(&r->io); 336 if (io) { 337 if (p++) 338 printf(", "); 339 printf("io"); 340 do { 341 printf(" %x", io->minbase); 342 if (io->len > 1) 343 printf("-%x", io->minbase + io->len - 1); 344 } while ((io = SIMPLEQ_NEXT(io, next))); 345 } 346 irq = SIMPLEQ_FIRST(&r->irq); 347 if (irq) { 348 if (p++) 349 printf(", "); 350 printf("irq"); 351 do { 352 printf(" %d", ffs(irq->mask) - 1); 353 } while ((irq = SIMPLEQ_NEXT(irq, next))); 354 } 355 dma = SIMPLEQ_FIRST(&r->dma); 356 if (dma) { 357 if (p) 358 printf(", "); 359 printf("dma"); 360 do { 361 printf(" %d", ffs(dma->mask) - 1); 362 } while ((dma = SIMPLEQ_NEXT(dma, next))); 363 } 364 } 365 366 static int 367 pnpbios_print(aux, pnp) 368 void *aux; 369 const char *pnp; 370 { 371 struct pnpbiosdev_attach_args *aa = aux; 372 373 if (pnp) 374 return (QUIET); 375 376 printf(" index %d (%s", aa->idx, aa->primid); 377 if (aa->resc->longname) 378 printf(", %s", aa->resc->longname); 379 if (aa->idstr != aa->primid) 380 printf(", attached as %s", aa->idstr); 381 printf(")"); 382 383 return (0); 384 } 385 386 void 387 pnpbios_print_devres(dev, aa) 388 struct device *dev; 389 struct pnpbiosdev_attach_args *aa; 390 { 391 392 printf("%s: ", dev->dv_xname); 393 pnpbios_printres(aa->resc); 394 printf("\n"); 395 } 396 397 static int 398 pnpbios_submatch(parent, match, aux) 399 struct device *parent; 400 struct cfdata *match; 401 void *aux; 402 { 403 struct pnpbiosdev_attach_args *aa = aux; 404 405 if (match->cf_loc[PNPBIOSCF_INDEX] != PNPBIOSCF_INDEX_DEFAULT && 406 match->cf_loc[PNPBIOSCF_INDEX] != aa->idx) 407 return (0); 408 409 return ((*match->cf_attach->ca_match)(parent, match, aux)); 410 } 411 412 static void 413 pnpbios_attachnode(sc, idx, buf, len) 414 struct pnpbios_softc *sc; 415 int idx; 416 unsigned char *buf; 417 size_t len; 418 { 419 char idstr[8]; 420 unsigned char *p; 421 int res; 422 struct pnpresources r, s; 423 int i; 424 struct pnpbiosdev_attach_args aa; 425 struct pnp_compatid *compatid; 426 427 eisaid_to_string(buf + 3, idstr); 428 p = buf + 12; 429 430 res = pnp_scan(&p, len - 12, &r, 0); 431 if (res < 0) { 432 printf("error in config data\n"); 433 goto dump; 434 } 435 436 /* 437 * the following is consistency check only for now 438 */ 439 res = pnp_scan(&p, len - (p - buf), &s, 0); 440 if (res < 0) { 441 printf("error in possible configuration\n"); 442 goto dump; 443 } 444 445 res = pnp_scan(&p, len - (p - buf), &s, 0); 446 if (res < 0) { 447 printf("error in compatible ID\n"); 448 goto dump; 449 } 450 451 if (p != buf + len) { 452 printf("length mismatch\n"); 453 goto dump; 454 } 455 456 aa.pbt = 0; /* XXX placeholder */ 457 aa.idx = idx; 458 aa.resc = &r; 459 aa.ic = sc->sc_ic; 460 aa.primid = idstr; 461 462 /* first try the specific device ID */ 463 aa.idstr = idstr; 464 if (config_found_sm((struct device *)sc, &aa, pnpbios_print, 465 pnpbios_submatch)) 466 return; 467 468 /* if no driver was found, try compatible IDs */ 469 compatid = s.compatids; 470 while (compatid) { 471 aa.idstr = compatid->idstr; 472 if (config_found_sm((struct device *)sc, &aa, pnpbios_print, 473 pnpbios_submatch)) 474 return; 475 compatid = compatid->next; 476 } 477 478 #ifdef PNPBIOSVERBOSE 479 printf("%s", idstr); 480 if (r.longname) 481 printf(", %s", r.longname); 482 compatid = s.compatids; 483 while (compatid) { 484 printf(", %s", compatid->idstr); 485 compatid = compatid->next; 486 } 487 printf(" ("); 488 pnpbios_printres(&r); 489 printf(") at %s index %d ignored\n", sc->sc_dev.dv_xname, idx); 490 #endif 491 492 return; 493 494 /* XXX should free ressource lists */ 495 496 dump: 497 for (i = 0; i < len; i++) 498 printf(" %02x", buf[i]); 499 printf("\n"); 500 } 501 502 static int pnp_compatid __P((struct pnpresources *, unsigned char *, size_t)); 503 static int pnp_newirq __P((struct pnpresources *, unsigned char *, size_t)); 504 static int pnp_newdma __P((struct pnpresources *, unsigned char *, size_t)); 505 static int pnp_newioport __P((struct pnpresources *, unsigned char *, size_t)); 506 507 /* 508 * small ressource types (beginning with 1) 509 */ 510 static struct{ 511 int (*handler) __P((struct pnpresources *, unsigned char *, size_t)); 512 int minlen, maxlen; 513 } smallrescs[] = { 514 {0, 2, 2}, /* PnP version number */ 515 {0, 5, 6}, /* logical device id */ 516 {pnp_compatid, 4, 4}, /* compatible device id */ 517 {pnp_newirq, 2, 3}, /* irq descriptor */ 518 {pnp_newdma, 2, 2}, /* dma descriptor */ 519 {0, 0, 1}, /* start dep */ 520 {0, 0, 0}, /* end dep */ 521 {pnp_newioport, 7, 7}, /* io descriptor */ 522 {0, 3, 3}, /* fixed io descriptor */ 523 {0, -1, -1}, /* reserved */ 524 {0, -1, -1}, 525 {0, -1, -1}, 526 {0, -1, -1}, 527 {0, 1, 7}, /* vendor defined */ 528 {0, 1, 1} /* end */ 529 }; 530 531 #define NEXTBYTE(p) (*(p)++) 532 533 static int 534 pnp_scan(bufp, maxlen, r, in_depends) 535 unsigned char **bufp; 536 size_t maxlen; 537 struct pnpresources *r; 538 int in_depends; 539 { 540 unsigned char *p = *bufp; 541 int tag, type, len; 542 char *idstr; 543 int i; 544 struct pnp_mem *mem; 545 546 bzero(r, sizeof(*r)); 547 SIMPLEQ_INIT(&r->mem); 548 SIMPLEQ_INIT(&r->io); 549 SIMPLEQ_INIT(&r->irq); 550 SIMPLEQ_INIT(&r->dma); 551 552 for (;;) { 553 if (p >= *bufp + maxlen) { 554 printf("pnp_scanresources: end of buffer\n"); 555 return (-1); 556 } 557 tag = NEXTBYTE(p); 558 559 if (tag & 0x80) { /* long tag */ 560 type = tag & 0x7f; 561 len = NEXTBYTE(p); 562 len |= NEXTBYTE(p) << 8; 563 564 switch (type) { 565 case 0x01: /* memory descriptor */ 566 if (len != 9) { 567 printf("pnp_scan: bad mem desc\n"); 568 return (-1); 569 } 570 571 mem = malloc(sizeof(struct pnp_mem), 572 M_DEVBUF, M_WAITOK); 573 mem->flags = NEXTBYTE(p); 574 mem->minbase = NEXTBYTE(p) << 8; 575 mem->minbase |= NEXTBYTE(p) << 16; 576 mem->maxbase = NEXTBYTE(p) << 8; 577 mem->maxbase |= NEXTBYTE(p) << 16; 578 mem->align = NEXTBYTE(p); 579 mem->align |= NEXTBYTE(p) << 8; 580 if (mem->align == 0) 581 mem->align = 0x10000; 582 mem->len = NEXTBYTE(p) << 8; 583 mem->len |= NEXTBYTE(p) << 16; 584 SIMPLEQ_INSERT_TAIL(&r->mem, mem, next); 585 r->nummem++; 586 #ifdef PNPBIOSDEBUG 587 if (mem->len == 0) 588 printf("ZERO mem descriptor\n"); 589 #endif 590 break; 591 case 0x02: 592 if (in_depends) 593 printf("ID in dep?\n"); 594 idstr = malloc(len + 1, M_DEVBUF, M_NOWAIT); 595 for (i = 0; i < len; i++) 596 idstr[i] = NEXTBYTE(p); 597 idstr[len] = '\0'; 598 r->longname = idstr; 599 break; 600 case 0x06: /* 32bit fixed memory descriptor */ 601 if (len != 9) { 602 printf("pnp_scan: bad mem32 desc\n"); 603 return (-1); 604 } 605 606 mem = malloc(sizeof(struct pnp_mem), 607 M_DEVBUF, M_WAITOK); 608 mem->flags = NEXTBYTE(p); 609 mem->minbase = NEXTBYTE(p); 610 mem->minbase |= NEXTBYTE(p) << 8; 611 mem->minbase |= NEXTBYTE(p) << 16; 612 mem->minbase |= NEXTBYTE(p) << 24; 613 mem->maxbase = mem->minbase; 614 mem->align = 0; 615 mem->len = NEXTBYTE(p); 616 mem->len |= NEXTBYTE(p) << 8; 617 mem->len |= NEXTBYTE(p) << 16; 618 mem->len |= NEXTBYTE(p) << 24; 619 SIMPLEQ_INSERT_TAIL(&r->mem, mem, next); 620 r->nummem++; 621 #ifdef PNPBIOSDEBUG 622 if (mem->len == 0) 623 printf("ZERO mem descriptor\n"); 624 #endif 625 break; 626 default: 627 printf("ignoring long tag %x\n", type); 628 while (len--) 629 (void) NEXTBYTE(p); 630 } 631 } else { 632 unsigned char tmpbuf[7]; 633 int i; 634 635 type = (tag >> 3) & 0x0f; 636 len = tag & 0x07; 637 638 if (type == 0 || 639 len < smallrescs[type - 1].minlen || 640 len > smallrescs[type - 1].maxlen) { 641 printf("pnp_scan: bad small resource\n"); 642 return (-1); 643 } 644 for (i = 0; i < len; i++) 645 tmpbuf[i] = NEXTBYTE(p); 646 647 if (type == 0x0f) { /* end mark */ 648 if (in_depends) { 649 printf("end in dep?\n"); 650 return (-1); 651 } 652 break; 653 } 654 if (type == 0x06) { /* start dep */ 655 struct pnpresources *new, *last; 656 int res; 657 658 if (r->dependant_link) { 659 printf("second dep?\n"); 660 return (-1); 661 } 662 663 if (in_depends) { 664 *bufp = p; 665 return (1); 666 } 667 668 last = r; 669 do { 670 new = malloc(sizeof(*new), 671 M_DEVBUF, M_NOWAIT); 672 673 res = pnp_scan(&p, maxlen - (p - *bufp), 674 new, 1); 675 if (res < 0) { 676 printf("error in dependant function\n"); 677 free(new, M_DEVBUF); 678 return (-1); 679 } 680 681 last->dependant_link = new; 682 last = new; 683 } while (res > 0); 684 continue; 685 } 686 if (type == 0x07) { /* end dep */ 687 if (!in_depends) { 688 printf("end dep?\n"); 689 return (-1); 690 } 691 break; 692 } 693 694 if (!smallrescs[type - 1].handler) 695 printf("ignoring short tag %x\n", type); 696 else 697 if ((*smallrescs[type - 1].handler)(r, tmpbuf, 698 len)) 699 return (-1); 700 } 701 } 702 *bufp = p; 703 return (0); 704 } 705 706 static int 707 pnp_newirq(r, buf, len) 708 struct pnpresources *r; 709 unsigned char *buf; 710 size_t len; 711 { 712 struct pnp_irq *irq; 713 714 irq = malloc(sizeof(struct pnp_irq), M_DEVBUF, M_NOWAIT); 715 irq->mask = buf[0] | (buf[1] << 8); 716 if (len > 2) 717 irq->flags = buf[2]; 718 else 719 irq->flags = 0x01; 720 SIMPLEQ_INSERT_TAIL(&r->irq, irq, next); 721 r->numirq++; 722 return (0); 723 } 724 725 static int 726 pnp_newdma(r, buf, len) 727 struct pnpresources *r; 728 unsigned char *buf; 729 size_t len; 730 { 731 struct pnp_dma *dma; 732 733 dma = malloc(sizeof(struct pnp_dma), M_DEVBUF, M_NOWAIT); 734 dma->mask = buf[0]; 735 dma->flags = buf[1]; 736 SIMPLEQ_INSERT_TAIL(&r->dma, dma, next); 737 r->numdma++; 738 return (0); 739 } 740 741 static int 742 pnp_newioport(r, buf, len) 743 struct pnpresources *r; 744 unsigned char *buf; 745 size_t len; 746 { 747 struct pnp_io *io; 748 749 io = malloc(sizeof(struct pnp_io), M_DEVBUF, M_NOWAIT); 750 io->flags = buf[0]; 751 io->minbase = buf[1] | (buf[2] << 8); 752 io->maxbase = buf[3] | (buf[4] << 8); 753 io->align = buf[5]; 754 io->len = buf[6]; 755 SIMPLEQ_INSERT_TAIL(&r->io, io, next); 756 r->numio++; 757 return (0); 758 } 759 760 static int 761 pnp_compatid(r, buf, len) 762 struct pnpresources *r; 763 unsigned char *buf; 764 size_t len; 765 { 766 struct pnp_compatid *id; 767 768 id = malloc(sizeof(*id), M_DEVBUF, M_NOWAIT); 769 eisaid_to_string(buf, id->idstr); 770 id->next = r->compatids; 771 r->compatids = id; 772 return (0); 773 } 774 775 int 776 pnpbios_io_map(pbt, resc, idx, tagp, hdlp) 777 pnpbios_tag_t pbt; 778 struct pnpresources *resc; 779 int idx; 780 bus_space_tag_t *tagp; 781 bus_space_handle_t *hdlp; 782 { 783 struct pnp_io *io; 784 785 if (idx >= resc->numio) 786 return (EINVAL); 787 788 io = SIMPLEQ_FIRST(&resc->io); 789 while (idx--) 790 io = SIMPLEQ_NEXT(io, next); 791 792 *tagp = I386_BUS_SPACE_IO; 793 return (i386_memio_map(I386_BUS_SPACE_IO, io->minbase, io->len, 794 0, hdlp)); 795 } 796 797 int 798 pnpbios_getiobase(pbt, resc, idx, tagp, basep) 799 pnpbios_tag_t pbt; 800 struct pnpresources *resc; 801 int idx; 802 bus_space_tag_t *tagp; 803 int *basep; 804 { 805 struct pnp_io *io; 806 807 if (idx >= resc->numio) 808 return (EINVAL); 809 810 io = SIMPLEQ_FIRST(&resc->io); 811 while (idx--) 812 io = SIMPLEQ_NEXT(io, next); 813 814 if (tagp) 815 *tagp = I386_BUS_SPACE_IO; 816 if (basep) 817 *basep = io->minbase; 818 return (0); 819 } 820 821 void * 822 pnpbios_intr_establish(pbt, resc, idx, level, fcn, arg) 823 pnpbios_tag_t pbt; 824 struct pnpresources *resc; 825 int idx, level; 826 int (*fcn) __P((void *)); 827 void *arg; 828 { 829 struct pnp_irq *irq; 830 int irqnum, type; 831 832 if (idx >= resc->numirq) 833 return (0); 834 835 irq = SIMPLEQ_FIRST(&resc->irq); 836 while (idx--) 837 irq = SIMPLEQ_NEXT(irq, next); 838 839 irqnum = ffs(irq->mask) - 1; 840 type = (irq->flags & 0x0c) ? IST_LEVEL : IST_EDGE; 841 842 return (isa_intr_establish(0, irqnum, type, level, fcn, arg)); 843 } 844 845 int 846 pnpbios_getirqnum(pbt, resc, idx, irqp) 847 pnpbios_tag_t pbt; 848 struct pnpresources *resc; 849 int idx; 850 int *irqp; 851 { 852 struct pnp_irq *irq; 853 854 if (idx >= resc->numirq) 855 return (EINVAL); 856 857 irq = SIMPLEQ_FIRST(&resc->irq); 858 while (idx--) 859 irq = SIMPLEQ_NEXT(irq, next); 860 861 *irqp = ffs(irq->mask) - 1; 862 return (0); 863 } 864 865 int 866 pnpbios_getdmachan(pbt, resc, idx, chanp) 867 pnpbios_tag_t pbt; 868 struct pnpresources *resc; 869 int idx; 870 int *chanp; 871 { 872 struct pnp_dma *dma; 873 874 if (idx >= resc->numdma) 875 return (EINVAL); 876 877 dma = SIMPLEQ_FIRST(&resc->dma); 878 while (idx--) 879 dma = SIMPLEQ_NEXT(dma, next); 880 881 *chanp = ffs(dma->mask) - 1; 882 return (0); 883 } 884
Indexes created Tue Sep 30 06:09:59 GMT 2025