Gerd Hoffmann | 654ba38 | 2020-03-24 12:13:32 +0100 | [diff] [blame] | 1 | // Support for parsing dsdt acpi tables |
| 2 | // |
| 3 | // Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net> |
| 4 | // |
| 5 | // This file may be distributed under the terms of the GNU LGPLv3 license. |
| 6 | |
| 7 | #include "config.h" // CONFIG_* |
| 8 | #include "list.h" // hlist_* |
| 9 | #include "malloc.h" // malloc_* |
| 10 | #include "output.h" // dprintf |
| 11 | #include "string.h" // memcpy |
| 12 | #include "util.h" |
| 13 | #include "std/acpi.h" // struct rsdp_descriptor |
| 14 | |
| 15 | /**************************************************************** |
| 16 | * DSDT parser |
| 17 | ****************************************************************/ |
| 18 | |
| 19 | struct acpi_device { |
| 20 | struct hlist_node node; |
| 21 | char name[16]; |
| 22 | u8 *hid_aml; |
| 23 | u8 *sta_aml; |
| 24 | u8 *crs_data; |
| 25 | int crs_size; |
| 26 | }; |
| 27 | static struct hlist_head acpi_devices VARVERIFY32INIT; |
| 28 | static const int parse_dumpdevs = 0; |
| 29 | |
| 30 | struct parse_state { |
| 31 | char name[32]; |
| 32 | struct acpi_device *dev; |
| 33 | int error; |
| 34 | int depth; |
| 35 | }; |
| 36 | |
| 37 | static void parse_termlist(struct parse_state *s, |
| 38 | u8 *ptr, int offset, int pkglength); |
| 39 | |
| 40 | static void hex(const u8 *ptr, int count, int lvl, const char *item) |
| 41 | { |
| 42 | int l = 0, i; |
| 43 | |
| 44 | do { |
| 45 | dprintf(lvl, "%s: %04x: ", item, l); |
| 46 | for (i = l; i < l+16; i += 4) |
| 47 | dprintf(lvl, "%02x %02x %02x %02x ", |
| 48 | ptr[i+0], ptr[i+1], ptr[i+2], ptr[i+3]); |
| 49 | for (i = l; i < l+16; i++) |
| 50 | dprintf(lvl, "%c", (ptr[i] > 0x20 && ptr[i] < 0x80) |
| 51 | ? ptr[i] : '.'); |
| 52 | dprintf(lvl, "\n"); |
| 53 | l += 16; |
| 54 | } while (l < count); |
| 55 | } |
| 56 | |
| 57 | static u64 parse_resource_int(u8 *ptr, int count) |
| 58 | { |
| 59 | u64 value = 0; |
| 60 | int index = 0; |
| 61 | |
| 62 | for (index = 0; index < count; index++) |
| 63 | value |= (u64)ptr[index] << (index * 8); |
| 64 | return value; |
| 65 | } |
| 66 | |
| 67 | static int parse_resource_bit(u8 *ptr, int count) |
| 68 | { |
| 69 | int bit; |
| 70 | |
| 71 | for (bit = 0; bit < count*8; bit++) |
| 72 | if (ptr[bit/8] & (1 << (bit%8))) |
| 73 | return bit; |
| 74 | return 0; |
| 75 | } |
| 76 | |
| 77 | static int parse_resource(u8 *ptr, int length, int *type, u64 *min, u64 *max) |
| 78 | { |
| 79 | int rname, rsize; |
| 80 | u64 len; |
| 81 | |
| 82 | *type = -1; |
| 83 | *min = 0; |
| 84 | *max = 0; |
| 85 | len = 0; |
| 86 | if (!(ptr[0] & 0x80)) { |
| 87 | /* small resource */ |
| 88 | rname = (ptr[0] >> 3) & 0x0f; |
| 89 | rsize = ptr[0] & 0x07; |
| 90 | rsize++; |
| 91 | switch (rname) { |
| 92 | case 0x04: /* irq */ |
| 93 | *min = parse_resource_bit(ptr + 1, rsize); |
| 94 | *max = *min; |
| 95 | *type = 3; |
| 96 | break; |
| 97 | case 0x0f: /* end marker */ |
| 98 | return 0; |
| 99 | case 0x08: /* io */ |
| 100 | *min = parse_resource_int(ptr + 2, 2); |
| 101 | *max = parse_resource_int(ptr + 4, 2); |
| 102 | if (*min == *max) { |
| 103 | *max = *min + ptr[7] - 1; |
| 104 | *type = 1; |
| 105 | } |
| 106 | break; |
| 107 | case 0x09: /* fixed io */ |
| 108 | *min = parse_resource_int(ptr + 2, 2); |
| 109 | *max = *min + ptr[4] - 1; |
| 110 | *type = 1; |
| 111 | break; |
| 112 | default: |
| 113 | dprintf(3, "%s: small: 0x%x (len %d)\n", |
| 114 | __func__, rname, rsize); |
| 115 | break; |
| 116 | } |
| 117 | } else { |
| 118 | /* large resource */ |
| 119 | rname = ptr[0] & 0x7f; |
| 120 | rsize = ptr[2] << 8 | ptr[1]; |
| 121 | rsize += 3; |
| 122 | switch (rname) { |
| 123 | case 0x06: /* 32-bit Fixed Location Memory Range Descriptor */ |
| 124 | *min = parse_resource_int(ptr + 4, 4); |
| 125 | len = parse_resource_int(ptr + 8, 4); |
| 126 | *max = *min + len - 1; |
| 127 | *type = 0; |
| 128 | break; |
| 129 | case 0x07: /* DWORD Address Space Descriptor */ |
| 130 | *min = parse_resource_int(ptr + 10, 4); |
| 131 | *max = parse_resource_int(ptr + 14, 4); |
| 132 | *type = ptr[3]; |
| 133 | break; |
| 134 | case 0x08: /* WORD Address Space Descriptor */ |
| 135 | *min = parse_resource_int(ptr + 8, 2); |
| 136 | *max = parse_resource_int(ptr + 10, 2); |
| 137 | *type = ptr[3]; |
| 138 | break; |
| 139 | case 0x09: /* irq */ |
| 140 | *min = parse_resource_int(ptr + 5, 4); |
| 141 | *max = *min; |
| 142 | *type = 3; |
| 143 | break; |
| 144 | case 0x0a: /* QWORD Address Space Descriptor */ |
| 145 | *min = parse_resource_int(ptr + 14, 8); |
| 146 | *max = parse_resource_int(ptr + 22, 8); |
| 147 | *type = ptr[3]; |
| 148 | break; |
| 149 | default: |
| 150 | dprintf(3, "%s: large: 0x%x (len %d)\n", __func__, rname, rsize); |
| 151 | break; |
| 152 | } |
| 153 | } |
| 154 | return rsize; |
| 155 | } |
| 156 | |
| 157 | static int find_resource(u8 *ptr, int len, int kind, u64 *min, u64 *max) |
| 158 | { |
| 159 | int type, size, offset = 0; |
| 160 | |
| 161 | do { |
| 162 | size = parse_resource(ptr + offset, len - offset, |
| 163 | &type, min, max); |
| 164 | if (kind == type) |
| 165 | return 0; |
| 166 | offset += size; |
| 167 | } while (size > 0 && offset < len); |
| 168 | return -1; |
| 169 | } |
| 170 | |
| 171 | static int print_resources(const char *prefix, u8 *ptr, int len) |
| 172 | { |
| 173 | static const char *typename[] = { "mem", "i/o", "bus" }; |
| 174 | int type, size, offset = 0; |
| 175 | u64 min, max; |
| 176 | |
| 177 | do { |
| 178 | size = parse_resource(ptr + offset, len - offset, |
| 179 | &type, &min, &max); |
| 180 | switch (type) { |
| 181 | case 0: |
| 182 | case 1: |
| 183 | case 2: |
| 184 | dprintf(1, "%s%s 0x%llx -> 0x%llx\n", |
| 185 | prefix, typename[type], min, max); |
| 186 | break; |
| 187 | case 3: |
| 188 | dprintf(1, "%sirq %lld\n", prefix, min); |
| 189 | break; |
| 190 | } |
| 191 | offset += size; |
| 192 | } while (size > 0 && offset < len); |
| 193 | return -1; |
| 194 | } |
| 195 | |
| 196 | static int parse_nameseg(u8 *ptr, char **dst) |
| 197 | { |
| 198 | if (dst && *dst) { |
| 199 | *(dst[0]++) = ptr[0]; |
| 200 | if (ptr[1] != '_') |
| 201 | *(dst[0]++) = ptr[1]; |
| 202 | if (ptr[2] != '_') |
| 203 | *(dst[0]++) = ptr[2]; |
| 204 | if (ptr[3] != '_') |
| 205 | *(dst[0]++) = ptr[3]; |
| 206 | *(dst[0]) = 0; |
| 207 | } |
| 208 | return 4; |
| 209 | } |
| 210 | |
| 211 | static int parse_namestring(struct parse_state *s, |
| 212 | u8 *ptr, const char *item) |
| 213 | { |
| 214 | char *dst = s->name; |
| 215 | int offset = 0; |
| 216 | int i, count; |
| 217 | |
| 218 | for (;;) { |
| 219 | switch (ptr[offset]) { |
| 220 | case 0: /* null name */ |
| 221 | offset++; |
| 222 | *(dst++) = 0; |
| 223 | break; |
| 224 | case 0x2e: |
| 225 | offset++; |
| 226 | offset += parse_nameseg(ptr + offset, &dst); |
| 227 | *(dst++) = '.'; |
| 228 | offset += parse_nameseg(ptr + offset, &dst); |
| 229 | break; |
| 230 | case 0x2f: |
| 231 | offset++; |
| 232 | count = ptr[offset]; |
| 233 | offset++; |
| 234 | for (i = 0; i < count; i++) { |
| 235 | if (i) |
| 236 | *(dst++) = '.'; |
| 237 | offset += parse_nameseg(ptr + offset, &dst); |
| 238 | } |
| 239 | break; |
| 240 | case '\\': |
| 241 | *(dst++) = '\\'; |
| 242 | offset++; |
| 243 | continue; |
| 244 | case '^': |
| 245 | *(dst++) = '^'; |
| 246 | offset++; |
| 247 | continue; |
| 248 | case 'A' ... 'Z': |
| 249 | case '_': |
| 250 | offset += parse_nameseg(ptr, &dst); |
| 251 | break; |
| 252 | default: |
| 253 | hex(ptr, 16, 3, __func__); |
| 254 | s->error = 1; |
| 255 | break; |
| 256 | } |
| 257 | break; |
| 258 | } |
| 259 | dprintf(5, "%s: %d %s '%s'\n", __func__, s->depth, |
| 260 | item, s->name); |
| 261 | return offset; |
| 262 | } |
| 263 | |
| 264 | static int parse_termarg_int(u8 *ptr, int *error, u64 *dst) |
| 265 | { |
| 266 | u64 value; |
| 267 | int offset = 1; |
| 268 | |
| 269 | switch (ptr[0]) { |
| 270 | case 0x00: /* zero */ |
| 271 | value = 0; |
| 272 | break; |
| 273 | case 0x01: /* one */ |
| 274 | value = 1; |
| 275 | break; |
| 276 | case 0x0a: /* byte prefix */ |
| 277 | value = ptr[1]; |
| 278 | offset++; |
| 279 | break; |
| 280 | case 0x0b: /* word prefix */ |
| 281 | value = ptr[1] | |
| 282 | ((unsigned long)ptr[2] << 8); |
| 283 | offset += 2; |
| 284 | break; |
| 285 | case 0x0c: /* dword prefix */ |
| 286 | value = ptr[1] | |
| 287 | ((unsigned long)ptr[2] << 8) | |
| 288 | ((unsigned long)ptr[3] << 16) | |
| 289 | ((unsigned long)ptr[4] << 24); |
| 290 | offset += 4; |
| 291 | break; |
| 292 | default: |
| 293 | value = 0; |
| 294 | hex(ptr, 16, 3, __func__); |
| 295 | if (error) |
| 296 | *error = 1; |
| 297 | break; |
| 298 | } |
| 299 | |
| 300 | if (dst) |
| 301 | *dst = value; |
| 302 | dprintf(5, "%s: 0x%llx\n", __func__, value); |
| 303 | return offset; |
| 304 | } |
| 305 | |
| 306 | static int parse_pkglength(u8 *ptr, int *pkglength) |
| 307 | { |
| 308 | int offset = 2; |
| 309 | |
| 310 | *pkglength = 0; |
| 311 | switch (ptr[0] >> 6) { |
| 312 | case 3: |
| 313 | *pkglength |= ptr[3] << 20; |
| 314 | offset++; |
| 315 | case 2: |
| 316 | *pkglength |= ptr[2] << 12; |
| 317 | offset++; |
| 318 | case 1: |
| 319 | *pkglength |= ptr[1] << 4; |
| 320 | *pkglength |= ptr[0] & 0x0f; |
| 321 | return offset; |
| 322 | case 0: |
| 323 | default: |
| 324 | *pkglength |= ptr[0] & 0x3f; |
| 325 | return 1; |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | static int parse_pkg_common(struct parse_state *s, |
| 330 | u8 *ptr, const char *item, int *pkglength) |
| 331 | { |
| 332 | int offset; |
| 333 | |
| 334 | offset = parse_pkglength(ptr, pkglength); |
| 335 | offset += parse_namestring(s, ptr + offset, item); |
| 336 | return offset; |
| 337 | } |
| 338 | |
| 339 | static int parse_pkg_scope(struct parse_state *s, |
| 340 | u8 *ptr) |
| 341 | { |
| 342 | int offset, pkglength; |
| 343 | |
| 344 | offset = parse_pkg_common(s, ptr, "scope", &pkglength); |
| 345 | parse_termlist(s, ptr, offset, pkglength); |
| 346 | return pkglength; |
| 347 | } |
| 348 | |
| 349 | static int parse_pkg_device(struct parse_state *s, |
| 350 | u8 *ptr) |
| 351 | { |
| 352 | int offset, pkglength; |
| 353 | |
| 354 | offset = parse_pkg_common(s, ptr, "device", &pkglength); |
| 355 | |
| 356 | s->dev = malloc_tmp(sizeof(struct acpi_device)); |
| 357 | if (!s->dev) { |
| 358 | warn_noalloc(); |
| 359 | s->error = 1; |
| 360 | return pkglength; |
| 361 | } |
| 362 | |
| 363 | memset(s->dev, 0, sizeof(struct acpi_device)); |
| 364 | hlist_add_head(&s->dev->node, &acpi_devices); |
| 365 | strtcpy(s->dev->name, s->name, sizeof(s->name)); |
| 366 | parse_termlist(s, ptr, offset, pkglength); |
| 367 | s->dev = NULL; |
| 368 | |
| 369 | return pkglength; |
| 370 | } |
| 371 | |
| 372 | static int parse_pkg_buffer(struct parse_state *s, |
| 373 | u8 *ptr) |
| 374 | { |
| 375 | u64 blen; |
| 376 | int pkglength, offset; |
| 377 | |
| 378 | offset = parse_pkglength(ptr, &pkglength); |
| 379 | offset += parse_termarg_int(ptr + offset, &s->error, &blen); |
| 380 | if (s->dev && strcmp(s->name, "_CRS") == 0) { |
| 381 | s->dev->crs_data = ptr + offset; |
| 382 | s->dev->crs_size = blen; |
| 383 | } |
| 384 | return pkglength; |
| 385 | } |
| 386 | |
| 387 | static int parse_pkg_skip(struct parse_state *s, |
| 388 | u8 *ptr, int op, int name) |
| 389 | { |
| 390 | int pkglength, offset; |
| 391 | char item[8]; |
| 392 | |
| 393 | snprintf(item, sizeof(item), "op %x", op); |
| 394 | offset = parse_pkglength(ptr, &pkglength); |
| 395 | if (name) { |
| 396 | parse_namestring(s, ptr + offset, item); |
| 397 | } else { |
| 398 | dprintf(5, "%s: %s (%d)\n", __func__, item, pkglength); |
| 399 | } |
| 400 | return pkglength; |
| 401 | } |
| 402 | |
| 403 | static int parse_termobj(struct parse_state *s, |
| 404 | u8 *ptr) |
| 405 | { |
| 406 | int offset = 1; |
| 407 | |
| 408 | if (s->depth == 16) { |
| 409 | dprintf(1, "%s: deep recursion\n", __func__); |
| 410 | s->error = 1; |
| 411 | return offset; |
| 412 | } |
| 413 | |
| 414 | s->depth++; |
| 415 | switch (ptr[0]) { |
| 416 | case 0x00: /* zero */ |
| 417 | break; |
| 418 | case 0x01: /* one */ |
| 419 | break; |
Igor Mammedov | 61e901b | 2022-11-18 15:27:55 +0100 | [diff] [blame^] | 420 | case 0x06: /* AliasOp */ |
| 421 | offset += parse_namestring(s, ptr + offset, "SourceObject"); |
| 422 | offset += parse_namestring(s, ptr + offset, "AliasObject"); |
| 423 | break; |
Gerd Hoffmann | 654ba38 | 2020-03-24 12:13:32 +0100 | [diff] [blame] | 424 | case 0x08: /* name op */ |
| 425 | offset += parse_namestring(s, ptr + offset, "name"); |
| 426 | offset += parse_termobj(s, ptr + offset); |
| 427 | if (s->dev && strcmp(s->name, "_HID") == 0) |
| 428 | s->dev->hid_aml = ptr; |
| 429 | if (s->dev && strcmp(s->name, "_STA") == 0) |
| 430 | s->dev->sta_aml = ptr; |
| 431 | break; |
| 432 | case 0x0a: /* byte prefix */ |
| 433 | offset++; |
| 434 | break; |
| 435 | case 0x0b: /* word prefix */ |
| 436 | offset += 2; |
| 437 | break; |
| 438 | case 0x0c: /* dword prefix */ |
| 439 | offset += 4; |
| 440 | break; |
| 441 | case 0x0d: /* string prefix */ |
| 442 | while (ptr[offset]) |
| 443 | offset++; |
| 444 | offset++; |
| 445 | break; |
| 446 | case 0x10: /* scope op */ |
| 447 | offset += parse_pkg_scope(s, ptr + offset); |
| 448 | break; |
| 449 | case 0x11: /* buffer op */ |
| 450 | offset += parse_pkg_buffer(s, ptr + offset); |
| 451 | break; |
| 452 | case 0x12: /* package op */ |
| 453 | case 0x13: /* var package op */ |
| 454 | offset += parse_pkg_skip(s, ptr + offset, ptr[0], 0); |
| 455 | break; |
| 456 | case 0x14: /* method op */ |
| 457 | offset += parse_pkg_skip(s, ptr + offset, ptr[0], 1); |
| 458 | if (s->dev && strcmp(s->name, "_STA") == 0) |
| 459 | s->dev->sta_aml = ptr; |
| 460 | break; |
| 461 | case 0x5b: /* ext op prefix */ |
| 462 | offset++; |
| 463 | switch (ptr[1]) { |
| 464 | case 0x01: /* mutex op */ |
| 465 | offset += parse_namestring(s, ptr + offset, "mutex"); |
| 466 | offset++; /* sync flags */ |
| 467 | break; |
| 468 | case 0x80: /* op region op */ |
| 469 | offset += parse_namestring(s, ptr + offset, "op region"); |
| 470 | offset++; /* region space */ |
| 471 | offset += parse_termarg_int(ptr + offset, &s->error, NULL); |
| 472 | offset += parse_termarg_int(ptr + offset, &s->error, NULL); |
| 473 | break; |
| 474 | case 0x81: /* field op */ |
| 475 | case 0x83: /* processor op */ |
| 476 | case 0x84: /* power resource op */ |
| 477 | case 0x85: /* thermal zone op */ |
| 478 | offset += parse_pkg_skip(s, ptr + offset, 0x5b00 | ptr[1], 1); |
| 479 | break; |
| 480 | case 0x82: /* device op */ |
| 481 | offset += parse_pkg_device(s, ptr + offset); |
| 482 | break; |
| 483 | default: |
| 484 | hex(ptr, 16, 3, __func__); |
| 485 | s->error = 1; |
| 486 | break; |
| 487 | } |
| 488 | break; |
| 489 | default: |
| 490 | hex(ptr, 16, 3, __func__); |
| 491 | s->error = 1; |
| 492 | break; |
| 493 | } |
| 494 | s->depth--; |
| 495 | |
| 496 | return offset; |
| 497 | } |
| 498 | |
| 499 | static void parse_termlist(struct parse_state *s, |
| 500 | u8 *ptr, int offset, int pkglength) |
| 501 | { |
| 502 | for (;;) { |
| 503 | offset += parse_termobj(s, ptr + offset); |
| 504 | if (offset == pkglength) |
| 505 | return; |
| 506 | if (offset > pkglength) { |
| 507 | dprintf(1, "%s: overrun: %d/%d\n", __func__, |
| 508 | offset, pkglength); |
| 509 | s->error = 1; |
| 510 | return; |
| 511 | } |
| 512 | if (s->error) { |
| 513 | dprintf(1, "%s: parse error, skip from %d/%d\n", __func__, |
| 514 | offset, pkglength); |
| 515 | s->error = 0; |
| 516 | return; |
| 517 | } |
| 518 | } |
| 519 | } |
| 520 | |
| 521 | static struct acpi_device *acpi_dsdt_find(struct acpi_device *prev, |
Gerd Hoffmann | dfac05b | 2020-09-30 13:12:22 +0200 | [diff] [blame] | 522 | const u8 *aml1, int size1, |
| 523 | const u8 *aml2, int size2) |
Gerd Hoffmann | 654ba38 | 2020-03-24 12:13:32 +0100 | [diff] [blame] | 524 | { |
| 525 | struct acpi_device *dev; |
| 526 | struct hlist_node *node; |
| 527 | |
| 528 | if (!prev) |
| 529 | node = acpi_devices.first; |
| 530 | else |
| 531 | node = prev->node.next; |
| 532 | |
| 533 | for (; node != NULL; node = dev->node.next) { |
| 534 | dev = container_of(node, struct acpi_device, node); |
Gerd Hoffmann | dfac05b | 2020-09-30 13:12:22 +0200 | [diff] [blame] | 535 | if (!aml1 && !aml2) |
Gerd Hoffmann | 654ba38 | 2020-03-24 12:13:32 +0100 | [diff] [blame] | 536 | return dev; |
| 537 | if (!dev->hid_aml) |
| 538 | continue; |
Gerd Hoffmann | dfac05b | 2020-09-30 13:12:22 +0200 | [diff] [blame] | 539 | if (aml1 && memcmp(dev->hid_aml + 5, aml1, size1) == 0) |
| 540 | return dev; |
| 541 | if (aml2 && memcmp(dev->hid_aml + 5, aml2, size2) == 0) |
Gerd Hoffmann | 654ba38 | 2020-03-24 12:13:32 +0100 | [diff] [blame] | 542 | return dev; |
| 543 | } |
| 544 | return NULL; |
| 545 | } |
| 546 | |
| 547 | static int acpi_dsdt_present(struct acpi_device *dev) |
| 548 | { |
| 549 | if (!dev) |
| 550 | return 0; /* no */ |
| 551 | if (!dev->sta_aml) |
| 552 | return 1; /* yes */ |
| 553 | if (dev->sta_aml[0] == 0x14) |
| 554 | return -1; /* unknown (can't evaluate method) */ |
| 555 | if (dev->sta_aml[0] == 0x08) { |
| 556 | u64 value = 0; |
| 557 | parse_termarg_int(dev->sta_aml + 5, NULL, &value); |
| 558 | if (value == 0) |
| 559 | return 0; /* no */ |
| 560 | else |
| 561 | return 1; /* yes */ |
| 562 | } |
| 563 | return -1; /* unknown (should not happen) */ |
| 564 | } |
| 565 | |
| 566 | /**************************************************************** |
| 567 | * DSDT parser, public interface |
| 568 | ****************************************************************/ |
| 569 | |
| 570 | struct acpi_device *acpi_dsdt_find_string(struct acpi_device *prev, |
| 571 | const char *hid) |
| 572 | { |
| 573 | if (!CONFIG_ACPI_PARSE) |
| 574 | return NULL; |
| 575 | |
| 576 | u8 aml[10]; |
| 577 | int len = snprintf((char*)aml, sizeof(aml), "\x0d%s", hid); |
Gerd Hoffmann | dfac05b | 2020-09-30 13:12:22 +0200 | [diff] [blame] | 578 | return acpi_dsdt_find(prev, aml, len, NULL, 0); |
Gerd Hoffmann | 654ba38 | 2020-03-24 12:13:32 +0100 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | struct acpi_device *acpi_dsdt_find_eisaid(struct acpi_device *prev, u16 eisaid) |
| 582 | { |
| 583 | if (!CONFIG_ACPI_PARSE) |
| 584 | return NULL; |
Gerd Hoffmann | dfac05b | 2020-09-30 13:12:22 +0200 | [diff] [blame] | 585 | u8 aml1[] = { |
Gerd Hoffmann | 654ba38 | 2020-03-24 12:13:32 +0100 | [diff] [blame] | 586 | 0x0c, 0x41, 0xd0, |
| 587 | eisaid >> 8, |
| 588 | eisaid & 0xff |
| 589 | }; |
Gerd Hoffmann | dfac05b | 2020-09-30 13:12:22 +0200 | [diff] [blame] | 590 | u8 aml2[10]; |
| 591 | int len2 = snprintf((char*)aml2, sizeof(aml2), "\x0dPNP%04X", eisaid); |
| 592 | return acpi_dsdt_find(prev, aml1, 5, aml2, len2); |
Gerd Hoffmann | 654ba38 | 2020-03-24 12:13:32 +0100 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | char *acpi_dsdt_name(struct acpi_device *dev) |
| 596 | { |
| 597 | if (!CONFIG_ACPI_PARSE || !dev) |
| 598 | return NULL; |
| 599 | return dev->name; |
| 600 | } |
| 601 | |
| 602 | int acpi_dsdt_find_io(struct acpi_device *dev, u64 *min, u64 *max) |
| 603 | { |
| 604 | if (!CONFIG_ACPI_PARSE || !dev || !dev->crs_data) |
| 605 | return -1; |
| 606 | return find_resource(dev->crs_data, dev->crs_size, |
| 607 | 1 /* I/O */, min, max); |
| 608 | } |
| 609 | |
| 610 | int acpi_dsdt_find_mem(struct acpi_device *dev, u64 *min, u64 *max) |
| 611 | { |
| 612 | if (!CONFIG_ACPI_PARSE || !dev || !dev->crs_data) |
| 613 | return -1; |
| 614 | return find_resource(dev->crs_data, dev->crs_size, |
| 615 | 0 /* mem */, min, max); |
| 616 | } |
| 617 | |
| 618 | int acpi_dsdt_find_irq(struct acpi_device *dev, u64 *irq) |
| 619 | { |
| 620 | u64 max; |
| 621 | if (!CONFIG_ACPI_PARSE || !dev || !dev->crs_data) |
| 622 | return -1; |
| 623 | return find_resource(dev->crs_data, dev->crs_size, |
| 624 | 3 /* irq */, irq, &max); |
| 625 | } |
| 626 | |
| 627 | int acpi_dsdt_present_eisaid(u16 eisaid) |
| 628 | { |
| 629 | if (!CONFIG_ACPI_PARSE) |
| 630 | return -1; /* unknown */ |
| 631 | if (hlist_empty(&acpi_devices)) |
| 632 | return -1; /* unknown (no dsdt table) */ |
| 633 | |
| 634 | struct acpi_device *dev = acpi_dsdt_find_eisaid(NULL, eisaid); |
| 635 | return acpi_dsdt_present(dev); |
| 636 | } |
| 637 | |
| 638 | void acpi_dsdt_parse(void) |
| 639 | { |
| 640 | if (!CONFIG_ACPI_PARSE) |
| 641 | return; |
| 642 | |
| 643 | struct fadt_descriptor_rev1 *fadt = find_acpi_table(FACP_SIGNATURE); |
| 644 | if (!fadt) |
| 645 | return; |
| 646 | u8 *dsdt = (void*)(fadt->dsdt); |
| 647 | if (!dsdt) |
| 648 | return; |
| 649 | |
| 650 | u32 length = *(u32*)(dsdt + 4); |
| 651 | u32 offset = 0x24; |
| 652 | dprintf(1, "ACPI: parse DSDT at %p (len %d)\n", dsdt, length); |
| 653 | |
| 654 | struct parse_state s; |
| 655 | memset(&s, 0, sizeof(s)); |
| 656 | parse_termlist(&s, dsdt, offset, length); |
| 657 | |
| 658 | if (!parse_dumpdevs) |
| 659 | return; |
| 660 | |
| 661 | struct acpi_device *dev; |
| 662 | dprintf(1, "ACPI: dumping dsdt devices\n"); |
Gerd Hoffmann | dfac05b | 2020-09-30 13:12:22 +0200 | [diff] [blame] | 663 | for (dev = acpi_dsdt_find(NULL, NULL, 0, NULL, 0); |
Gerd Hoffmann | 654ba38 | 2020-03-24 12:13:32 +0100 | [diff] [blame] | 664 | dev != NULL; |
Gerd Hoffmann | dfac05b | 2020-09-30 13:12:22 +0200 | [diff] [blame] | 665 | dev = acpi_dsdt_find(dev, NULL, 0, NULL, 0)) { |
Gerd Hoffmann | 654ba38 | 2020-03-24 12:13:32 +0100 | [diff] [blame] | 666 | dprintf(1, " %s", acpi_dsdt_name(dev)); |
| 667 | if (dev->hid_aml) |
| 668 | dprintf(1, ", hid"); |
| 669 | if (dev->sta_aml) |
| 670 | dprintf(1, ", sta (0x%x)", dev->sta_aml[0]); |
| 671 | if (dev->crs_data) |
| 672 | dprintf(1, ", crs"); |
| 673 | dprintf(1, "\n"); |
| 674 | if (dev->crs_data) |
| 675 | print_resources(" ", dev->crs_data, dev->crs_size); |
| 676 | } |
| 677 | } |