1/* 2 * rsparser.c - parses and encodes pnpbios resource data streams 3 * 4 */ 5 6#include <linux/ctype.h> 7#include <linux/pnp.h> 8#include <linux/pnpbios.h> 9#include <linux/string.h> 10#include <linux/slab.h> 11 12#ifdef CONFIG_PCI 13#include <linux/pci.h> 14#else 15inline void pcibios_penalize_isa_irq(int irq, int active) {} 16#endif /* CONFIG_PCI */ 17 18#include "pnpbios.h" 19 20/* standard resource tags */ 21#define SMALL_TAG_PNPVERNO 0x01 22#define SMALL_TAG_LOGDEVID 0x02 23#define SMALL_TAG_COMPATDEVID 0x03 24#define SMALL_TAG_IRQ 0x04 25#define SMALL_TAG_DMA 0x05 26#define SMALL_TAG_STARTDEP 0x06 27#define SMALL_TAG_ENDDEP 0x07 28#define SMALL_TAG_PORT 0x08 29#define SMALL_TAG_FIXEDPORT 0x09 30#define SMALL_TAG_VENDOR 0x0e 31#define SMALL_TAG_END 0x0f 32#define LARGE_TAG 0x80 33#define LARGE_TAG_MEM 0x81 34#define LARGE_TAG_ANSISTR 0x82 35#define LARGE_TAG_UNICODESTR 0x83 36#define LARGE_TAG_VENDOR 0x84 37#define LARGE_TAG_MEM32 0x85 38#define LARGE_TAG_FIXEDMEM32 0x86 39 40/* 41 * Resource Data Stream Format: 42 * 43 * Allocated Resources (required) 44 * end tag -> 45 * Resource Configuration Options (optional) 46 * end tag -> 47 * Compitable Device IDs (optional) 48 * final end tag -> 49 */ 50 51/* 52 * Allocated Resources 53 */ 54 55static void 56pnpbios_parse_allocated_irqresource(struct pnp_resource_table * res, int irq) 57{ 58 int i = 0; 59 while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) && i < PNP_MAX_IRQ) i++; 60 if (i < PNP_MAX_IRQ) { 61 res->irq_resource[i].flags = IORESOURCE_IRQ; // Also clears _UNSET flag 62 if (irq == -1) { 63 res->irq_resource[i].flags |= IORESOURCE_DISABLED; 64 return; 65 } 66 res->irq_resource[i].start = 67 res->irq_resource[i].end = (unsigned long) irq; 68 pcibios_penalize_isa_irq(irq, 1); 69 } 70} 71 72static void 73pnpbios_parse_allocated_dmaresource(struct pnp_resource_table * res, int dma) 74{ 75 int i = 0; 76 while (i < PNP_MAX_DMA && 77 !(res->dma_resource[i].flags & IORESOURCE_UNSET)) 78 i++; 79 if (i < PNP_MAX_DMA) { 80 res->dma_resource[i].flags = IORESOURCE_DMA; // Also clears _UNSET flag 81 if (dma == -1) { 82 res->dma_resource[i].flags |= IORESOURCE_DISABLED; 83 return; 84 } 85 res->dma_resource[i].start = 86 res->dma_resource[i].end = (unsigned long) dma; 87 } 88} 89 90static void 91pnpbios_parse_allocated_ioresource(struct pnp_resource_table * res, int io, int len) 92{ 93 int i = 0; 94 while (!(res->port_resource[i].flags & IORESOURCE_UNSET) && i < PNP_MAX_PORT) i++; 95 if (i < PNP_MAX_PORT) { 96 res->port_resource[i].flags = IORESOURCE_IO; // Also clears _UNSET flag 97 if (len <= 0 || (io + len -1) >= 0x10003) { 98 res->port_resource[i].flags |= IORESOURCE_DISABLED; 99 return; 100 } 101 res->port_resource[i].start = (unsigned long) io; 102 res->port_resource[i].end = (unsigned long)(io + len - 1); 103 } 104} 105 106static void 107pnpbios_parse_allocated_memresource(struct pnp_resource_table * res, int mem, int len) 108{ 109 int i = 0; 110 while (!(res->mem_resource[i].flags & IORESOURCE_UNSET) && i < PNP_MAX_MEM) i++; 111 if (i < PNP_MAX_MEM) { 112 res->mem_resource[i].flags = IORESOURCE_MEM; // Also clears _UNSET flag 113 if (len <= 0) { 114 res->mem_resource[i].flags |= IORESOURCE_DISABLED; 115 return; 116 } 117 res->mem_resource[i].start = (unsigned long) mem; 118 res->mem_resource[i].end = (unsigned long)(mem + len - 1); 119 } 120} 121 122static unsigned char * 123pnpbios_parse_allocated_resource_data(unsigned char * p, unsigned char * end, struct pnp_resource_table * res) 124{ 125 unsigned int len, tag; 126 int io, size, mask, i; 127 128 if (!p) 129 return NULL; 130 131 /* Blank the resource table values */ 132 pnp_init_resource_table(res); 133 134 while ((char *)p < (char *)end) { 135 136 /* determine the type of tag */ 137 if (p[0] & LARGE_TAG) { /* large tag */ 138 len = (p[2] << 8) | p[1]; 139 tag = p[0]; 140 } else { /* small tag */ 141 len = p[0] & 0x07; 142 tag = ((p[0]>>3) & 0x0f); 143 } 144 145 switch (tag) { 146 147 case LARGE_TAG_MEM: 148 if (len != 9) 149 goto len_err; 150 io = *(short *) &p[4]; 151 size = *(short *) &p[10]; 152 pnpbios_parse_allocated_memresource(res, io, size); 153 break; 154 155 case LARGE_TAG_ANSISTR: 156 /* ignore this for now */ 157 break; 158 159 case LARGE_TAG_VENDOR: 160 /* do nothing */ 161 break; 162 163 case LARGE_TAG_MEM32: 164 if (len != 17) 165 goto len_err; 166 io = *(int *) &p[4]; 167 size = *(int *) &p[16]; 168 pnpbios_parse_allocated_memresource(res, io, size); 169 break; 170 171 case LARGE_TAG_FIXEDMEM32: 172 if (len != 9) 173 goto len_err; 174 io = *(int *) &p[4]; 175 size = *(int *) &p[8]; 176 pnpbios_parse_allocated_memresource(res, io, size); 177 break; 178 179 case SMALL_TAG_IRQ: 180 if (len < 2 || len > 3) 181 goto len_err; 182 io = -1; 183 mask= p[1] + p[2]*256; 184 for (i=0;i<16;i++, mask=mask>>1) 185 if(mask & 0x01) io=i; 186 pnpbios_parse_allocated_irqresource(res, io); 187 break; 188 189 case SMALL_TAG_DMA: 190 if (len != 2) 191 goto len_err; 192 io = -1; 193 mask = p[1]; 194 for (i=0;i<8;i++, mask = mask>>1) 195 if(mask & 0x01) io=i; 196 pnpbios_parse_allocated_dmaresource(res, io); 197 break; 198 199 case SMALL_TAG_PORT: 200 if (len != 7) 201 goto len_err; 202 io = p[2] + p[3] *256; 203 size = p[7]; 204 pnpbios_parse_allocated_ioresource(res, io, size); 205 break; 206 207 case SMALL_TAG_VENDOR: 208 /* do nothing */ 209 break; 210 211 case SMALL_TAG_FIXEDPORT: 212 if (len != 3) 213 goto len_err; 214 io = p[1] + p[2] * 256; 215 size = p[3]; 216 pnpbios_parse_allocated_ioresource(res, io, size); 217 break; 218 219 case SMALL_TAG_END: 220 p = p + 2; 221 return (unsigned char *)p; 222 break; 223 224 default: /* an unkown tag */ 225 len_err: 226 printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len); 227 break; 228 } 229 230 /* continue to the next tag */ 231 if (p[0] & LARGE_TAG) 232 p += len + 3; 233 else 234 p += len + 1; 235 } 236 237 printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n"); 238 239 return NULL; 240} 241 242 243/* 244 * Resource Configuration Options 245 */ 246 247static void 248pnpbios_parse_mem_option(unsigned char *p, int size, struct pnp_option *option) 249{ 250 struct pnp_mem * mem; 251 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); 252 if (!mem) 253 return; 254 mem->min = ((p[5] << 8) | p[4]) << 8; 255 mem->max = ((p[7] << 8) | p[6]) << 8; 256 mem->align = (p[9] << 8) | p[8]; 257 mem->size = ((p[11] << 8) | p[10]) << 8; 258 mem->flags = p[3]; 259 pnp_register_mem_resource(option,mem); 260 return; 261} 262 263static void 264pnpbios_parse_mem32_option(unsigned char *p, int size, struct pnp_option *option) 265{ 266 struct pnp_mem * mem; 267 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); 268 if (!mem) 269 return; 270 mem->min = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; 271 mem->max = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; 272 mem->align = (p[15] << 24) | (p[14] << 16) | (p[13] << 8) | p[12]; 273 mem->size = (p[19] << 24) | (p[18] << 16) | (p[17] << 8) | p[16]; 274 mem->flags = p[3]; 275 pnp_register_mem_resource(option,mem); 276 return; 277} 278 279static void 280pnpbios_parse_fixed_mem32_option(unsigned char *p, int size, struct pnp_option *option) 281{ 282 struct pnp_mem * mem; 283 mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); 284 if (!mem) 285 return; 286 mem->min = mem->max = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; 287 mem->size = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; 288 mem->align = 0; 289 mem->flags = p[3]; 290 pnp_register_mem_resource(option,mem); 291 return; 292} 293 294static void 295pnpbios_parse_irq_option(unsigned char *p, int size, struct pnp_option *option) 296{ 297 struct pnp_irq * irq; 298 unsigned long bits; 299 300 irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL); 301 if (!irq) 302 return; 303 bits = (p[2] << 8) | p[1]; 304 bitmap_copy(irq->map, &bits, 16); 305 if (size > 2) 306 irq->flags = p[3]; 307 else 308 irq->flags = IORESOURCE_IRQ_HIGHEDGE; 309 pnp_register_irq_resource(option,irq); 310 return; 311} 312 313static void 314pnpbios_parse_dma_option(unsigned char *p, int size, struct pnp_option *option) 315{ 316 struct pnp_dma * dma; 317 dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL); 318 if (!dma) 319 return; 320 dma->map = p[1]; 321 dma->flags = p[2]; 322 pnp_register_dma_resource(option,dma); 323 return; 324} 325 326static void 327pnpbios_parse_port_option(unsigned char *p, int size, struct pnp_option *option) 328{ 329 struct pnp_port * port; 330 port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); 331 if (!port) 332 return; 333 port->min = (p[3] << 8) | p[2]; 334 port->max = (p[5] << 8) | p[4]; 335 port->align = p[6]; 336 port->size = p[7]; 337 port->flags = p[1] ? PNP_PORT_FLAG_16BITADDR : 0; 338 pnp_register_port_resource(option,port); 339 return; 340} 341 342static void 343pnpbios_parse_fixed_port_option(unsigned char *p, int size, struct pnp_option *option) 344{ 345 struct pnp_port * port; 346 port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); 347 if (!port) 348 return; 349 port->min = port->max = (p[2] << 8) | p[1]; 350 port->size = p[3]; 351 port->align = 0; 352 port->flags = PNP_PORT_FLAG_FIXED; 353 pnp_register_port_resource(option,port); 354 return; 355} 356 357static unsigned char * 358pnpbios_parse_resource_option_data(unsigned char * p, unsigned char * end, struct pnp_dev *dev) 359{ 360 unsigned int len, tag; 361 int priority = 0; 362 struct pnp_option *option, *option_independent; 363 364 if (!p) 365 return NULL; 366 367 option_independent = option = pnp_register_independent_option(dev); 368 if (!option) 369 return NULL; 370 371 while ((char *)p < (char *)end) { 372 373 /* determine the type of tag */ 374 if (p[0] & LARGE_TAG) { /* large tag */ 375 len = (p[2] << 8) | p[1]; 376 tag = p[0]; 377 } else { /* small tag */ 378 len = p[0] & 0x07; 379 tag = ((p[0]>>3) & 0x0f); 380 } 381 382 switch (tag) { 383 384 case LARGE_TAG_MEM: 385 if (len != 9) 386 goto len_err; 387 pnpbios_parse_mem_option(p, len, option); 388 break; 389 390 case LARGE_TAG_MEM32: 391 if (len != 17) 392 goto len_err; 393 pnpbios_parse_mem32_option(p, len, option); 394 break; 395 396 case LARGE_TAG_FIXEDMEM32: 397 if (len != 9) 398 goto len_err; 399 pnpbios_parse_fixed_mem32_option(p, len, option); 400 break; 401 402 case SMALL_TAG_IRQ: 403 if (len < 2 || len > 3) 404 goto len_err; 405 pnpbios_parse_irq_option(p, len, option); 406 break; 407 408 case SMALL_TAG_DMA: 409 if (len != 2) 410 goto len_err; 411 pnpbios_parse_dma_option(p, len, option); 412 break; 413 414 case SMALL_TAG_PORT: 415 if (len != 7) 416 goto len_err; 417 pnpbios_parse_port_option(p, len, option); 418 break; 419 420 case SMALL_TAG_VENDOR: 421 /* do nothing */ 422 break; 423 424 case SMALL_TAG_FIXEDPORT: 425 if (len != 3) 426 goto len_err; 427 pnpbios_parse_fixed_port_option(p, len, option); 428 break; 429 430 case SMALL_TAG_STARTDEP: 431 if (len > 1) 432 goto len_err; 433 priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE; 434 if (len > 0) 435 priority = 0x100 | p[1]; 436 option = pnp_register_dependent_option(dev, priority); 437 if (!option) 438 return NULL; 439 break; 440 441 case SMALL_TAG_ENDDEP: 442 if (len != 0) 443 goto len_err; 444 if (option_independent == option) 445 printk(KERN_WARNING "PnPBIOS: Missing SMALL_TAG_STARTDEP tag\n"); 446 option = option_independent; 447 break; 448 449 case SMALL_TAG_END: 450 return p + 2; 451 452 default: /* an unkown tag */ 453 len_err: 454 printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len); 455 break; 456 } 457 458 /* continue to the next tag */ 459 if (p[0] & LARGE_TAG) 460 p += len + 3; 461 else 462 p += len + 1; 463 } 464 465 printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n"); 466 467 return NULL; 468} 469 470 471/* 472 * Compatible Device IDs 473 */ 474 475#define HEX(id,a) hex[((id)>>a) & 15] 476#define CHAR(id,a) (0x40 + (((id)>>a) & 31)) 477// 478 479void pnpid32_to_pnpid(u32 id, char *str) 480{ 481 const char *hex = "0123456789abcdef"; 482 483 id = be32_to_cpu(id); 484 str[0] = CHAR(id, 26); 485 str[1] = CHAR(id, 21); 486 str[2] = CHAR(id,16); 487 str[3] = HEX(id, 12); 488 str[4] = HEX(id, 8); 489 str[5] = HEX(id, 4); 490 str[6] = HEX(id, 0); 491 str[7] = '\0'; 492 493 return; 494} 495// 496#undef CHAR 497#undef HEX 498 499static unsigned char * 500pnpbios_parse_compatible_ids(unsigned char *p, unsigned char *end, struct pnp_dev *dev) 501{ 502 int len, tag; 503 char id[8]; 504 struct pnp_id *dev_id; 505 506 if (!p) 507 return NULL; 508 509 while ((char *)p < (char *)end) { 510 511 /* determine the type of tag */ 512 if (p[0] & LARGE_TAG) { /* large tag */ 513 len = (p[2] << 8) | p[1]; 514 tag = p[0]; 515 } else { /* small tag */ 516 len = p[0] & 0x07; 517 tag = ((p[0]>>3) & 0x0f); 518 } 519 520 switch (tag) { 521 522 case LARGE_TAG_ANSISTR: 523 strncpy(dev->name, p + 3, len >= PNP_NAME_LEN ? PNP_NAME_LEN - 2 : len); 524 dev->name[len >= PNP_NAME_LEN ? PNP_NAME_LEN - 1 : len] = '\0'; 525 break; 526 527 case SMALL_TAG_COMPATDEVID: /* compatible ID */ 528 if (len != 4) 529 goto len_err; 530 dev_id = kzalloc(sizeof (struct pnp_id), GFP_KERNEL); 531 if (!dev_id) 532 return NULL; 533 pnpid32_to_pnpid(p[1] | p[2] << 8 | p[3] << 16 | p[4] << 24,id); 534 memcpy(&dev_id->id, id, 7); 535 pnp_add_id(dev_id, dev); 536 break; 537 538 case SMALL_TAG_END: 539 p = p + 2; 540 return (unsigned char *)p; 541 break; 542 543 default: /* an unkown tag */ 544 len_err: 545 printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len); 546 break; 547 } 548 549 /* continue to the next tag */ 550 if (p[0] & LARGE_TAG) 551 p += len + 3; 552 else 553 p += len + 1; 554 } 555 556 printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n"); 557 558 return NULL; 559} 560 561 562/* 563 * Allocated Resource Encoding 564 */ 565 566static void pnpbios_encode_mem(unsigned char *p, struct resource * res) 567{ 568 unsigned long base = res->start; 569 unsigned long len = res->end - res->start + 1; 570 p[4] = (base >> 8) & 0xff; 571 p[5] = ((base >> 8) >> 8) & 0xff; 572 p[6] = (base >> 8) & 0xff; 573 p[7] = ((base >> 8) >> 8) & 0xff; 574 p[10] = (len >> 8) & 0xff; 575 p[11] = ((len >> 8) >> 8) & 0xff; 576 return; 577} 578 579static void pnpbios_encode_mem32(unsigned char *p, struct resource * res) 580{ 581 unsigned long base = res->start; 582 unsigned long len = res->end - res->start + 1; 583 p[4] = base & 0xff; 584 p[5] = (base >> 8) & 0xff; 585 p[6] = (base >> 16) & 0xff; 586 p[7] = (base >> 24) & 0xff; 587 p[8] = base & 0xff; 588 p[9] = (base >> 8) & 0xff; 589 p[10] = (base >> 16) & 0xff; 590 p[11] = (base >> 24) & 0xff; 591 p[16] = len & 0xff; 592 p[17] = (len >> 8) & 0xff; 593 p[18] = (len >> 16) & 0xff; 594 p[19] = (len >> 24) & 0xff; 595 return; 596} 597 598static void pnpbios_encode_fixed_mem32(unsigned char *p, struct resource * res) 599{ unsigned long base = res->start; 600 unsigned long len = res->end - res->start + 1; 601 p[4] = base & 0xff; 602 p[5] = (base >> 8) & 0xff; 603 p[6] = (base >> 16) & 0xff; 604 p[7] = (base >> 24) & 0xff; 605 p[8] = len & 0xff; 606 p[9] = (len >> 8) & 0xff; 607 p[10] = (len >> 16) & 0xff; 608 p[11] = (len >> 24) & 0xff; 609 return; 610} 611 612static void pnpbios_encode_irq(unsigned char *p, struct resource * res) 613{ 614 unsigned long map = 0; 615 map = 1 << res->start; 616 p[1] = map & 0xff; 617 p[2] = (map >> 8) & 0xff; 618 return; 619} 620 621static void pnpbios_encode_dma(unsigned char *p, struct resource * res) 622{ 623 unsigned long map = 0; 624 map = 1 << res->start; 625 p[1] = map & 0xff; 626 return; 627} 628 629static void pnpbios_encode_port(unsigned char *p, struct resource * res) 630{ 631 unsigned long base = res->start; 632 unsigned long len = res->end - res->start + 1; 633 p[2] = base & 0xff; 634 p[3] = (base >> 8) & 0xff; 635 p[4] = base & 0xff; 636 p[5] = (base >> 8) & 0xff; 637 p[7] = len & 0xff; 638 return; 639} 640 641static void pnpbios_encode_fixed_port(unsigned char *p, struct resource * res) 642{ 643 unsigned long base = res->start; 644 unsigned long len = res->end - res->start + 1; 645 p[1] = base & 0xff; 646 p[2] = (base >> 8) & 0xff; 647 p[3] = len & 0xff; 648 return; 649} 650 651static unsigned char * 652pnpbios_encode_allocated_resource_data(unsigned char * p, unsigned char * end, struct pnp_resource_table * res) 653{ 654 unsigned int len, tag; 655 int port = 0, irq = 0, dma = 0, mem = 0; 656 657 if (!p) 658 return NULL; 659 660 while ((char *)p < (char *)end) { 661 662 /* determine the type of tag */ 663 if (p[0] & LARGE_TAG) { /* large tag */ 664 len = (p[2] << 8) | p[1]; 665 tag = p[0]; 666 } else { /* small tag */ 667 len = p[0] & 0x07; 668 tag = ((p[0]>>3) & 0x0f); 669 } 670 671 switch (tag) { 672 673 case LARGE_TAG_MEM: 674 if (len != 9) 675 goto len_err; 676 pnpbios_encode_mem(p, &res->mem_resource[mem]); 677 mem++; 678 break; 679 680 case LARGE_TAG_MEM32: 681 if (len != 17) 682 goto len_err; 683 pnpbios_encode_mem32(p, &res->mem_resource[mem]); 684 mem++; 685 break; 686 687 case LARGE_TAG_FIXEDMEM32: 688 if (len != 9) 689 goto len_err; 690 pnpbios_encode_fixed_mem32(p, &res->mem_resource[mem]); 691 mem++; 692 break; 693 694 case SMALL_TAG_IRQ: 695 if (len < 2 || len > 3) 696 goto len_err; 697 pnpbios_encode_irq(p, &res->irq_resource[irq]); 698 irq++; 699 break; 700 701 case SMALL_TAG_DMA: 702 if (len != 2) 703 goto len_err; 704 pnpbios_encode_dma(p, &res->dma_resource[dma]); 705 dma++; 706 break; 707 708 case SMALL_TAG_PORT: 709 if (len != 7) 710 goto len_err; 711 pnpbios_encode_port(p, &res->port_resource[port]); 712 port++; 713 break; 714 715 case SMALL_TAG_VENDOR: 716 /* do nothing */ 717 break; 718 719 case SMALL_TAG_FIXEDPORT: 720 if (len != 3) 721 goto len_err; 722 pnpbios_encode_fixed_port(p, &res->port_resource[port]); 723 port++; 724 break; 725 726 case SMALL_TAG_END: 727 p = p + 2; 728 return (unsigned char *)p; 729 break; 730 731 default: /* an unkown tag */ 732 len_err: 733 printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len); 734 break; 735 } 736 737 /* continue to the next tag */ 738 if (p[0] & LARGE_TAG) 739 p += len + 3; 740 else 741 p += len + 1; 742 } 743 744 printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n"); 745 746 return NULL; 747} 748 749 750/* 751 * Core Parsing Functions 752 */ 753 754int 755pnpbios_parse_data_stream(struct pnp_dev *dev, struct pnp_bios_node * node) 756{ 757 unsigned char * p = (char *)node->data; 758 unsigned char * end = (char *)(node->data + node->size); 759 p = pnpbios_parse_allocated_resource_data(p,end,&dev->res); 760 if (!p) 761 return -EIO; 762 p = pnpbios_parse_resource_option_data(p,end,dev); 763 if (!p) 764 return -EIO; 765 p = pnpbios_parse_compatible_ids(p,end,dev); 766 if (!p) 767 return -EIO; 768 return 0; 769} 770 771int 772pnpbios_read_resources_from_node(struct pnp_resource_table *res, 773 struct pnp_bios_node * node) 774{ 775 unsigned char * p = (char *)node->data; 776 unsigned char * end = (char *)(node->data + node->size); 777 p = pnpbios_parse_allocated_resource_data(p,end,res); 778 if (!p) 779 return -EIO; 780 return 0; 781} 782 783int 784pnpbios_write_resources_to_node(struct pnp_resource_table *res, 785 struct pnp_bios_node * node) 786{ 787 unsigned char * p = (char *)node->data; 788 unsigned char * end = (char *)(node->data + node->size); 789 p = pnpbios_encode_allocated_resource_data(p,end,res); 790 if (!p) 791 return -EIO; 792 return 0; 793} 794