1 /* 2 * Copyright 2016 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 #include <stdio.h> 25 #include <stdbool.h> 26 #include <stdint.h> 27 #include <stdarg.h> 28 #include <string.h> 29 #include <expat.h> 30 #include <inttypes.h> 31 #include <zlib.h> 32 33 #include <util/macros.h> 34 #include <util/ralloc.h> 35 36 #include "intel_decoder.h" 37 38 #include "isl/isl.h" 39 #include "genxml/genX_xml.h" 40 41 #define XML_BUFFER_SIZE 4096 42 #define MAX_VALUE_ITEMS 128 43 44 struct location { 45 const char *filename; 46 int line_number; 47 }; 48 49 struct parser_context { 50 XML_Parser parser; 51 int foo; 52 struct location loc; 53 54 struct intel_group *group; 55 struct intel_enum *enoom; 56 57 int n_values, n_allocated_values; 58 struct intel_value **values; 59 60 struct intel_field *last_field; 61 62 struct intel_spec *spec; 63 }; 64 65 const char * 66 intel_group_get_name(struct intel_group *group) 67 { 68 return group->name; 69 } 70 71 uint32_t 72 intel_group_get_opcode(struct intel_group *group) 73 { 74 return group->opcode; 75 } 76 77 struct intel_group * 78 intel_spec_find_struct(struct intel_spec *spec, const char *name) 79 { 80 struct hash_entry *entry = _mesa_hash_table_search(spec->structs, 81 name); 82 return entry ? entry->data : NULL; 83 } 84 85 struct intel_group * 86 intel_spec_find_register(struct intel_spec *spec, uint32_t offset) 87 { 88 struct hash_entry *entry = 89 _mesa_hash_table_search(spec->registers_by_offset, 90 (void *) (uintptr_t) offset); 91 return entry ? entry->data : NULL; 92 } 93 94 struct intel_group * 95 intel_spec_find_register_by_name(struct intel_spec *spec, const char *name) 96 { 97 struct hash_entry *entry = 98 _mesa_hash_table_search(spec->registers_by_name, name); 99 return entry ? entry->data : NULL; 100 } 101 102 struct intel_enum * 103 intel_spec_find_enum(struct intel_spec *spec, const char *name) 104 { 105 struct hash_entry *entry = _mesa_hash_table_search(spec->enums, 106 name); 107 return entry ? entry->data : NULL; 108 } 109 110 uint32_t 111 intel_spec_get_gen(struct intel_spec *spec) 112 { 113 return spec->gen; 114 } 115 116 static void __attribute__((noreturn)) 117 fail(struct location *loc, const char *msg, ...) 118 { 119 va_list ap; 120 121 va_start(ap, msg); 122 fprintf(stderr, "%s:%d: error: ", 123 loc->filename, loc->line_number); 124 vfprintf(stderr, msg, ap); 125 fprintf(stderr, "\n"); 126 va_end(ap); 127 exit(EXIT_FAILURE); 128 } 129 130 static void 131 get_array_offset_count(const char **atts, uint32_t *offset, uint32_t *count, 132 uint32_t *size, bool *variable) 133 { 134 for (int i = 0; atts[i]; i += 2) { 135 char *p; 136 137 if (strcmp(atts[i], "count") == 0) { 138 *count = strtoul(atts[i + 1], &p, 0); 139 if (*count == 0) 140 *variable = true; 141 } else if (strcmp(atts[i], "start") == 0) { 142 *offset = strtoul(atts[i + 1], &p, 0); 143 } else if (strcmp(atts[i], "size") == 0) { 144 *size = strtoul(atts[i + 1], &p, 0); 145 } 146 } 147 return; 148 } 149 150 static struct intel_group * 151 create_group(struct parser_context *ctx, 152 const char *name, 153 const char **atts, 154 struct intel_group *parent, 155 bool fixed_length) 156 { 157 struct intel_group *group; 158 159 group = rzalloc(ctx->spec, struct intel_group); 160 if (name) 161 group->name = ralloc_strdup(group, name); 162 163 group->spec = ctx->spec; 164 group->variable = false; 165 group->fixed_length = fixed_length; 166 group->dword_length_field = NULL; 167 group->dw_length = 0; 168 group->engine_mask = I915_ENGINE_CLASS_TO_MASK(I915_ENGINE_CLASS_RENDER) | 169 I915_ENGINE_CLASS_TO_MASK(I915_ENGINE_CLASS_VIDEO) | 170 I915_ENGINE_CLASS_TO_MASK(I915_ENGINE_CLASS_COPY); 171 group->bias = 1; 172 173 for (int i = 0; atts[i]; i += 2) { 174 char *p; 175 if (strcmp(atts[i], "length") == 0) { 176 group->dw_length = strtoul(atts[i + 1], &p, 0); 177 } else if (strcmp(atts[i], "bias") == 0) { 178 group->bias = strtoul(atts[i + 1], &p, 0); 179 } else if (strcmp(atts[i], "engine") == 0) { 180 void *mem_ctx = ralloc_context(NULL); 181 char *tmp = ralloc_strdup(mem_ctx, atts[i + 1]); 182 char *save_ptr; 183 char *tok = strtok_r(tmp, "|", &save_ptr); 184 185 group->engine_mask = 0; 186 while (tok != NULL) { 187 if (strcmp(tok, "render") == 0) { 188 group->engine_mask |= I915_ENGINE_CLASS_TO_MASK(I915_ENGINE_CLASS_RENDER); 189 } else if (strcmp(tok, "video") == 0) { 190 group->engine_mask |= I915_ENGINE_CLASS_TO_MASK(I915_ENGINE_CLASS_VIDEO); 191 } else if (strcmp(tok, "blitter") == 0) { 192 group->engine_mask |= I915_ENGINE_CLASS_TO_MASK(I915_ENGINE_CLASS_COPY); 193 } else { 194 fprintf(stderr, "unknown engine class defined for instruction \"%s\": %s\n", name, atts[i + 1]); 195 } 196 197 tok = strtok_r(NULL, "|", &save_ptr); 198 } 199 200 ralloc_free(mem_ctx); 201 } 202 } 203 204 if (parent) { 205 group->parent = parent; 206 get_array_offset_count(atts, 207 &group->array_offset, 208 &group->array_count, 209 &group->array_item_size, 210 &group->variable); 211 } 212 213 return group; 214 } 215 216 static struct intel_enum * 217 create_enum(struct parser_context *ctx, const char *name, const char **atts) 218 { 219 struct intel_enum *e; 220 221 e = rzalloc(ctx->spec, struct intel_enum); 222 if (name) 223 e->name = ralloc_strdup(e, name); 224 225 return e; 226 } 227 228 static void 229 get_register_offset(const char **atts, uint32_t *offset) 230 { 231 for (int i = 0; atts[i]; i += 2) { 232 char *p; 233 234 if (strcmp(atts[i], "num") == 0) 235 *offset = strtoul(atts[i + 1], &p, 0); 236 } 237 return; 238 } 239 240 static void 241 get_start_end_pos(int *start, int *end) 242 { 243 /* start value has to be mod with 32 as we need the relative 244 * start position in the first DWord. For the end position, add 245 * the length of the field to the start position to get the 246 * relative postion in the 64 bit address. 247 */ 248 if (*end - *start > 32) { 249 int len = *end - *start; 250 *start = *start % 32; 251 *end = *start + len; 252 } else { 253 *start = *start % 32; 254 *end = *end % 32; 255 } 256 257 return; 258 } 259 260 static inline uint64_t 261 mask(int start, int end) 262 { 263 uint64_t v; 264 265 v = ~0ULL >> (63 - end + start); 266 267 return v << start; 268 } 269 270 static inline uint64_t 271 field_value(uint64_t value, int start, int end) 272 { 273 get_start_end_pos(&start, &end); 274 return (value & mask(start, end)) >> (start); 275 } 276 277 static struct intel_type 278 string_to_type(struct parser_context *ctx, const char *s) 279 { 280 int i, f; 281 struct intel_group *g; 282 struct intel_enum *e; 283 284 if (strcmp(s, "int") == 0) 285 return (struct intel_type) { .kind = INTEL_TYPE_INT }; 286 else if (strcmp(s, "uint") == 0) 287 return (struct intel_type) { .kind = INTEL_TYPE_UINT }; 288 else if (strcmp(s, "bool") == 0) 289 return (struct intel_type) { .kind = INTEL_TYPE_BOOL }; 290 else if (strcmp(s, "float") == 0) 291 return (struct intel_type) { .kind = INTEL_TYPE_FLOAT }; 292 else if (strcmp(s, "address") == 0) 293 return (struct intel_type) { .kind = INTEL_TYPE_ADDRESS }; 294 else if (strcmp(s, "offset") == 0) 295 return (struct intel_type) { .kind = INTEL_TYPE_OFFSET }; 296 else if (sscanf(s, "u%d.%d", &i, &f) == 2) 297 return (struct intel_type) { .kind = INTEL_TYPE_UFIXED, .i = i, .f = f }; 298 else if (sscanf(s, "s%d.%d", &i, &f) == 2) 299 return (struct intel_type) { .kind = INTEL_TYPE_SFIXED, .i = i, .f = f }; 300 else if (g = intel_spec_find_struct(ctx->spec, s), g != NULL) 301 return (struct intel_type) { .kind = INTEL_TYPE_STRUCT, .intel_struct = g }; 302 else if (e = intel_spec_find_enum(ctx->spec, s), e != NULL) 303 return (struct intel_type) { .kind = INTEL_TYPE_ENUM, .intel_enum = e }; 304 else if (strcmp(s, "mbo") == 0) 305 return (struct intel_type) { .kind = INTEL_TYPE_MBO }; 306 else 307 fail(&ctx->loc, "invalid type: %s", s); 308 } 309 310 static struct intel_field * 311 create_field(struct parser_context *ctx, const char **atts) 312 { 313 struct intel_field *field; 314 315 field = rzalloc(ctx->group, struct intel_field); 316 field->parent = ctx->group; 317 318 for (int i = 0; atts[i]; i += 2) { 319 char *p; 320 321 if (strcmp(atts[i], "name") == 0) { 322 field->name = ralloc_strdup(field, atts[i + 1]); 323 if (strcmp(field->name, "DWord Length") == 0) { 324 field->parent->dword_length_field = field; 325 } 326 } else if (strcmp(atts[i], "start") == 0) { 327 field->start = strtoul(atts[i + 1], &p, 0); 328 } else if (strcmp(atts[i], "end") == 0) { 329 field->end = strtoul(atts[i + 1], &p, 0); 330 } else if (strcmp(atts[i], "type") == 0) { 331 field->type = string_to_type(ctx, atts[i + 1]); 332 } else if (strcmp(atts[i], "default") == 0 && 333 field->start >= 16 && field->end <= 31) { 334 field->has_default = true; 335 field->default_value = strtoul(atts[i + 1], &p, 0); 336 } 337 } 338 339 return field; 340 } 341 342 static struct intel_field * 343 create_array_field(struct parser_context *ctx, struct intel_group *array) 344 { 345 struct intel_field *field; 346 347 field = rzalloc(ctx->group, struct intel_field); 348 field->parent = ctx->group; 349 350 field->array = array; 351 field->start = field->array->array_offset; 352 353 return field; 354 } 355 356 static struct intel_value * 357 create_value(struct parser_context *ctx, const char **atts) 358 { 359 struct intel_value *value = rzalloc(ctx->values, struct intel_value); 360 361 for (int i = 0; atts[i]; i += 2) { 362 if (strcmp(atts[i], "name") == 0) 363 value->name = ralloc_strdup(value, atts[i + 1]); 364 else if (strcmp(atts[i], "value") == 0) 365 value->value = strtoul(atts[i + 1], NULL, 0); 366 } 367 368 return value; 369 } 370 371 static struct intel_field * 372 create_and_append_field(struct parser_context *ctx, 373 const char **atts, 374 struct intel_group *array) 375 { 376 struct intel_field *field = array ? 377 create_array_field(ctx, array) : create_field(ctx, atts); 378 struct intel_field *prev = NULL, *list = ctx->group->fields; 379 380 while (list && field->start > list->start) { 381 prev = list; 382 list = list->next; 383 } 384 385 field->next = list; 386 if (prev == NULL) 387 ctx->group->fields = field; 388 else 389 prev->next = field; 390 391 return field; 392 } 393 394 static void 395 start_element(void *data, const char *element_name, const char **atts) 396 { 397 struct parser_context *ctx = data; 398 const char *name = NULL; 399 const char *gen = NULL; 400 401 ctx->loc.line_number = XML_GetCurrentLineNumber(ctx->parser); 402 403 for (int i = 0; atts[i]; i += 2) { 404 if (strcmp(atts[i], "name") == 0) 405 name = atts[i + 1]; 406 else if (strcmp(atts[i], "gen") == 0) 407 gen = atts[i + 1]; 408 } 409 410 if (strcmp(element_name, "genxml") == 0) { 411 if (name == NULL) 412 fail(&ctx->loc, "no platform name given"); 413 if (gen == NULL) 414 fail(&ctx->loc, "no gen given"); 415 416 int major, minor; 417 int n = sscanf(gen, "%d.%d", &major, &minor); 418 if (n == 0) 419 fail(&ctx->loc, "invalid gen given: %s", gen); 420 if (n == 1) 421 minor = 0; 422 423 ctx->spec->gen = intel_make_gen(major, minor); 424 } else if (strcmp(element_name, "instruction") == 0) { 425 ctx->group = create_group(ctx, name, atts, NULL, false); 426 } else if (strcmp(element_name, "struct") == 0) { 427 ctx->group = create_group(ctx, name, atts, NULL, true); 428 } else if (strcmp(element_name, "register") == 0) { 429 ctx->group = create_group(ctx, name, atts, NULL, true); 430 get_register_offset(atts, &ctx->group->register_offset); 431 } else if (strcmp(element_name, "group") == 0) { 432 struct intel_group *group = create_group(ctx, "", atts, ctx->group, false); 433 ctx->last_field = create_and_append_field(ctx, NULL, group); 434 ctx->group = group; 435 } else if (strcmp(element_name, "field") == 0) { 436 ctx->last_field = create_and_append_field(ctx, atts, NULL); 437 } else if (strcmp(element_name, "enum") == 0) { 438 ctx->enoom = create_enum(ctx, name, atts); 439 } else if (strcmp(element_name, "value") == 0) { 440 if (ctx->n_values >= ctx->n_allocated_values) { 441 ctx->n_allocated_values = MAX2(2, ctx->n_allocated_values * 2); 442 ctx->values = reralloc_array_size(ctx->spec, ctx->values, 443 sizeof(struct intel_value *), 444 ctx->n_allocated_values); 445 } 446 assert(ctx->n_values < ctx->n_allocated_values); 447 ctx->values[ctx->n_values++] = create_value(ctx, atts); 448 } 449 450 } 451 452 static void 453 end_element(void *data, const char *name) 454 { 455 struct parser_context *ctx = data; 456 struct intel_spec *spec = ctx->spec; 457 458 if (strcmp(name, "instruction") == 0 || 459 strcmp(name, "struct") == 0 || 460 strcmp(name, "register") == 0) { 461 struct intel_group *group = ctx->group; 462 struct intel_field *list = group->fields; 463 464 ctx->group = ctx->group->parent; 465 466 while (list && list->end <= 31) { 467 if (list->start >= 16 && list->has_default) { 468 group->opcode_mask |= 469 mask(list->start % 32, list->end % 32); 470 group->opcode |= list->default_value << list->start; 471 } 472 list = list->next; 473 } 474 475 if (strcmp(name, "instruction") == 0) 476 _mesa_hash_table_insert(spec->commands, group->name, group); 477 else if (strcmp(name, "struct") == 0) 478 _mesa_hash_table_insert(spec->structs, group->name, group); 479 else if (strcmp(name, "register") == 0) { 480 _mesa_hash_table_insert(spec->registers_by_name, group->name, group); 481 _mesa_hash_table_insert(spec->registers_by_offset, 482 (void *) (uintptr_t) group->register_offset, 483 group); 484 } 485 } else if (strcmp(name, "group") == 0) { 486 ctx->group = ctx->group->parent; 487 } else if (strcmp(name, "field") == 0) { 488 struct intel_field *field = ctx->last_field; 489 ctx->last_field = NULL; 490 field->inline_enum.values = ctx->values; 491 field->inline_enum.nvalues = ctx->n_values; 492 ctx->values = ralloc_array(ctx->spec, struct intel_value*, ctx->n_allocated_values = 2); 493 ctx->n_values = 0; 494 } else if (strcmp(name, "enum") == 0) { 495 struct intel_enum *e = ctx->enoom; 496 e->values = ctx->values; 497 e->nvalues = ctx->n_values; 498 ctx->values = ralloc_array(ctx->spec, struct intel_value*, ctx->n_allocated_values = 2); 499 ctx->n_values = 0; 500 ctx->enoom = NULL; 501 _mesa_hash_table_insert(spec->enums, e->name, e); 502 } 503 } 504 505 static void 506 character_data(void *data, const XML_Char *s, int len) 507 { 508 } 509 510 static uint32_t zlib_inflate(const void *compressed_data, 511 uint32_t compressed_len, 512 void **out_ptr) 513 { 514 struct z_stream_s zstream; 515 void *out; 516 517 memset(&zstream, 0, sizeof(zstream)); 518 519 zstream.next_in = (unsigned char *)compressed_data; 520 zstream.avail_in = compressed_len; 521 522 if (inflateInit(&zstream) != Z_OK) 523 return 0; 524 525 out = malloc(4096); 526 zstream.next_out = out; 527 zstream.avail_out = 4096; 528 529 do { 530 switch (inflate(&zstream, Z_SYNC_FLUSH)) { 531 case Z_STREAM_END: 532 goto end; 533 case Z_OK: 534 break; 535 default: 536 inflateEnd(&zstream); 537 return 0; 538 } 539 540 if (zstream.avail_out) 541 break; 542 543 out = realloc(out, 2*zstream.total_out); 544 if (out == NULL) { 545 inflateEnd(&zstream); 546 return 0; 547 } 548 549 zstream.next_out = (unsigned char *)out + zstream.total_out; 550 zstream.avail_out = zstream.total_out; 551 } while (1); 552 end: 553 inflateEnd(&zstream); 554 *out_ptr = out; 555 return zstream.total_out; 556 } 557 558 static uint32_t _hash_uint32(const void *key) 559 { 560 return (uint32_t) (uintptr_t) key; 561 } 562 563 static struct intel_spec * 564 intel_spec_init(void) 565 { 566 struct intel_spec *spec; 567 spec = rzalloc(NULL, struct intel_spec); 568 if (spec == NULL) 569 return NULL; 570 571 spec->commands = 572 _mesa_hash_table_create(spec, _mesa_hash_string, _mesa_key_string_equal); 573 spec->structs = 574 _mesa_hash_table_create(spec, _mesa_hash_string, _mesa_key_string_equal); 575 spec->registers_by_name = 576 _mesa_hash_table_create(spec, _mesa_hash_string, _mesa_key_string_equal); 577 spec->registers_by_offset = 578 _mesa_hash_table_create(spec, _hash_uint32, _mesa_key_pointer_equal); 579 spec->enums = 580 _mesa_hash_table_create(spec, _mesa_hash_string, _mesa_key_string_equal); 581 spec->access_cache = 582 _mesa_hash_table_create(spec, _mesa_hash_string, _mesa_key_string_equal); 583 584 return spec; 585 } 586 587 struct intel_spec * 588 intel_spec_load(const struct intel_device_info *devinfo) 589 { 590 struct parser_context ctx; 591 void *buf; 592 uint8_t *text_data = NULL; 593 uint32_t text_offset = 0, text_length = 0; 594 ASSERTED uint32_t total_length; 595 uint32_t ver_10 = devinfo->verx10; 596 597 for (int i = 0; i < ARRAY_SIZE(genxml_files_table); i++) { 598 if (genxml_files_table[i].ver_10 == ver_10) { 599 text_offset = genxml_files_table[i].offset; 600 text_length = genxml_files_table[i].length; 601 break; 602 } 603 } 604 605 if (text_length == 0) { 606 fprintf(stderr, "unable to find gen (%u) data\n", ver_10); 607 return NULL; 608 } 609 610 memset(&ctx, 0, sizeof ctx); 611 ctx.parser = XML_ParserCreate(NULL); 612 XML_SetUserData(ctx.parser, &ctx); 613 if (ctx.parser == NULL) { 614 fprintf(stderr, "failed to create parser\n"); 615 return NULL; 616 } 617 618 XML_SetElementHandler(ctx.parser, start_element, end_element); 619 XML_SetCharacterDataHandler(ctx.parser, character_data); 620 621 ctx.spec = intel_spec_init(); 622 if (ctx.spec == NULL) { 623 fprintf(stderr, "Failed to create intel_spec\n"); 624 return NULL; 625 } 626 627 total_length = zlib_inflate(compress_genxmls, 628 sizeof(compress_genxmls), 629 (void **) &text_data); 630 assert(text_offset + text_length <= total_length); 631 632 buf = XML_GetBuffer(ctx.parser, text_length); 633 memcpy(buf, &text_data[text_offset], text_length); 634 635 if (XML_ParseBuffer(ctx.parser, text_length, true) == 0) { 636 fprintf(stderr, 637 "Error parsing XML at line %ld col %ld byte %ld/%u: %s\n", 638 XML_GetCurrentLineNumber(ctx.parser), 639 XML_GetCurrentColumnNumber(ctx.parser), 640 XML_GetCurrentByteIndex(ctx.parser), text_length, 641 XML_ErrorString(XML_GetErrorCode(ctx.parser))); 642 XML_ParserFree(ctx.parser); 643 free(text_data); 644 return NULL; 645 } 646 647 XML_ParserFree(ctx.parser); 648 free(text_data); 649 650 return ctx.spec; 651 } 652 653 struct intel_spec * 654 intel_spec_load_filename(const char *filename) 655 { 656 struct parser_context ctx; 657 FILE *input; 658 void *buf; 659 size_t len; 660 661 input = fopen(filename, "r"); 662 if (input == NULL) { 663 fprintf(stderr, "failed to open xml description\n"); 664 return NULL; 665 } 666 667 memset(&ctx, 0, sizeof ctx); 668 ctx.parser = XML_ParserCreate(NULL); 669 XML_SetUserData(ctx.parser, &ctx); 670 if (ctx.parser == NULL) { 671 fprintf(stderr, "failed to create parser\n"); 672 fclose(input); 673 return NULL; 674 } 675 676 XML_SetElementHandler(ctx.parser, start_element, end_element); 677 XML_SetCharacterDataHandler(ctx.parser, character_data); 678 ctx.loc.filename = filename; 679 680 ctx.spec = intel_spec_init(); 681 if (ctx.spec == NULL) { 682 fprintf(stderr, "Failed to create intel_spec\n"); 683 goto end; 684 } 685 686 do { 687 buf = XML_GetBuffer(ctx.parser, XML_BUFFER_SIZE); 688 len = fread(buf, 1, XML_BUFFER_SIZE, input); 689 if (ferror(input)) { 690 fprintf(stderr, "fread: %m\n"); 691 intel_spec_destroy(ctx.spec); 692 ctx.spec = NULL; 693 goto end; 694 } else if (len == 0 && feof(input)) 695 goto end; 696 697 if (XML_ParseBuffer(ctx.parser, len, len == 0) == 0) { 698 fprintf(stderr, 699 "Error parsing XML at line %ld col %ld: %s\n", 700 XML_GetCurrentLineNumber(ctx.parser), 701 XML_GetCurrentColumnNumber(ctx.parser), 702 XML_ErrorString(XML_GetErrorCode(ctx.parser))); 703 intel_spec_destroy(ctx.spec); 704 ctx.spec = NULL; 705 goto end; 706 } 707 } while (len > 0); 708 709 end: 710 XML_ParserFree(ctx.parser); 711 712 fclose(input); 713 714 /* free ctx.spec if genxml is empty */ 715 if (ctx.spec && 716 _mesa_hash_table_num_entries(ctx.spec->commands) == 0 && 717 _mesa_hash_table_num_entries(ctx.spec->structs) == 0) { 718 fprintf(stderr, 719 "Error parsing XML: empty spec.\n"); 720 intel_spec_destroy(ctx.spec); 721 return NULL; 722 } 723 724 return ctx.spec; 725 } 726 727 struct intel_spec * 728 intel_spec_load_from_path(const struct intel_device_info *devinfo, 729 const char *path) 730 { 731 size_t filename_len = strlen(path) + 20; 732 char *filename = malloc(filename_len); 733 734 ASSERTED size_t len = snprintf(filename, filename_len, "%s/gen%i.xml", 735 path, devinfo->ver); 736 assert(len < filename_len); 737 738 struct intel_spec *spec = intel_spec_load_filename(filename); 739 free(filename); 740 741 return spec; 742 } 743 744 void intel_spec_destroy(struct intel_spec *spec) 745 { 746 ralloc_free(spec); 747 } 748 749 struct intel_group * 750 intel_spec_find_instruction(struct intel_spec *spec, 751 enum drm_i915_gem_engine_class engine, 752 const uint32_t *p) 753 { 754 hash_table_foreach(spec->commands, entry) { 755 struct intel_group *command = entry->data; 756 uint32_t opcode = *p & command->opcode_mask; 757 if ((command->engine_mask & I915_ENGINE_CLASS_TO_MASK(engine)) && 758 opcode == command->opcode) 759 return command; 760 } 761 762 return NULL; 763 } 764 765 struct intel_field * 766 intel_group_find_field(struct intel_group *group, const char *name) 767 { 768 char path[256]; 769 snprintf(path, sizeof(path), "%s/%s", group->name, name); 770 771 struct intel_spec *spec = group->spec; 772 struct hash_entry *entry = _mesa_hash_table_search(spec->access_cache, 773 path); 774 if (entry) 775 return entry->data; 776 777 struct intel_field *field = group->fields; 778 while (field) { 779 if (strcmp(field->name, name) == 0) { 780 _mesa_hash_table_insert(spec->access_cache, 781 ralloc_strdup(spec, path), 782 field); 783 return field; 784 } 785 field = field->next; 786 } 787 788 return NULL; 789 } 790 791 int 792 intel_group_get_length(struct intel_group *group, const uint32_t *p) 793 { 794 if (group) { 795 if (group->fixed_length) 796 return group->dw_length; 797 else { 798 struct intel_field *field = group->dword_length_field; 799 if (field) { 800 return field_value(p[0], field->start, field->end) + group->bias; 801 } 802 } 803 } 804 805 uint32_t h = p[0]; 806 uint32_t type = field_value(h, 29, 31); 807 808 switch (type) { 809 case 0: /* MI */ { 810 uint32_t opcode = field_value(h, 23, 28); 811 if (opcode < 16) 812 return 1; 813 else 814 return field_value(h, 0, 7) + 2; 815 break; 816 } 817 818 case 2: /* BLT */ { 819 return field_value(h, 0, 7) + 2; 820 } 821 822 case 3: /* Render */ { 823 uint32_t subtype = field_value(h, 27, 28); 824 uint32_t opcode = field_value(h, 24, 26); 825 uint16_t whole_opcode = field_value(h, 16, 31); 826 switch (subtype) { 827 case 0: 828 if (whole_opcode == 0x6104 /* PIPELINE_SELECT_965 */) 829 return 1; 830 else if (opcode < 2) 831 return field_value(h, 0, 7) + 2; 832 else 833 return -1; 834 case 1: 835 if (opcode < 2) 836 return 1; 837 else 838 return -1; 839 case 2: { 840 if (opcode == 0) 841 return field_value(h, 0, 7) + 2; 842 else if (opcode < 3) 843 return field_value(h, 0, 15) + 2; 844 else 845 return -1; 846 } 847 case 3: 848 if (whole_opcode == 0x780b) 849 return 1; 850 else if (opcode < 4) 851 return field_value(h, 0, 7) + 2; 852 else 853 return -1; 854 } 855 } 856 } 857 858 return -1; 859 } 860 861 static const char * 862 intel_get_enum_name(struct intel_enum *e, uint64_t value) 863 { 864 for (int i = 0; i < e->nvalues; i++) { 865 if (e->values[i]->value == value) { 866 return e->values[i]->name; 867 } 868 } 869 return NULL; 870 } 871 872 static bool 873 iter_more_fields(const struct intel_field_iterator *iter) 874 { 875 return iter->field != NULL && iter->field->next != NULL; 876 } 877 878 static uint32_t 879 iter_array_offset_bits(const struct intel_field_iterator *iter) 880 { 881 if (iter->level == 0) 882 return 0; 883 884 uint32_t offset = 0; 885 const struct intel_group *group = iter->groups[1]; 886 for (int level = 1; level <= iter->level; level++, group = iter->groups[level]) { 887 uint32_t array_idx = iter->array_iter[level]; 888 offset += group->array_offset + array_idx * group->array_item_size; 889 } 890 891 return offset; 892 } 893 894 /* Checks whether we have more items in the array to iterate, or more arrays to 895 * iterate through. 896 */ 897 /* descend into a non-array field */ 898 static void 899 iter_push_array(struct intel_field_iterator *iter) 900 { 901 assert(iter->level >= 0); 902 903 iter->group = iter->field->array; 904 iter->level++; 905 assert(iter->level < DECODE_MAX_ARRAY_DEPTH); 906 iter->groups[iter->level] = iter->group; 907 iter->array_iter[iter->level] = 0; 908 909 assert(iter->group->fields != NULL); /* an empty <group> makes no sense */ 910 iter->field = iter->group->fields; 911 iter->fields[iter->level] = iter->field; 912 } 913 914 static void 915 iter_pop_array(struct intel_field_iterator *iter) 916 { 917 assert(iter->level > 0); 918 919 iter->level--; 920 iter->field = iter->fields[iter->level]; 921 iter->group = iter->groups[iter->level]; 922 } 923 924 static void 925 iter_start_field(struct intel_field_iterator *iter, struct intel_field *field) 926 { 927 iter->field = field; 928 iter->fields[iter->level] = field; 929 930 while (iter->field->array) 931 iter_push_array(iter); 932 933 int array_member_offset = iter_array_offset_bits(iter); 934 935 iter->start_bit = array_member_offset + iter->field->start; 936 iter->end_bit = array_member_offset + iter->field->end; 937 iter->struct_desc = NULL; 938 } 939 940 static void 941 iter_advance_array(struct intel_field_iterator *iter) 942 { 943 assert(iter->level > 0); 944 int lvl = iter->level; 945 946 if (iter->group->variable) 947 iter->array_iter[lvl]++; 948 else { 949 if ((iter->array_iter[lvl] + 1) < iter->group->array_count) { 950 iter->array_iter[lvl]++; 951 } 952 } 953 954 iter_start_field(iter, iter->group->fields); 955 } 956 957 static bool 958 iter_more_array_elems(const struct intel_field_iterator *iter) 959 { 960 int lvl = iter->level; 961 assert(lvl >= 0); 962 963 if (iter->group->variable) { 964 int length = intel_group_get_length(iter->group, iter->p); 965 assert(length >= 0 && "error the length is unknown!"); 966 return iter_array_offset_bits(iter) + iter->group->array_item_size < 967 (length * 32); 968 } else { 969 return (iter->array_iter[lvl] + 1) < iter->group->array_count; 970 } 971 } 972 973 static bool 974 iter_advance_field(struct intel_field_iterator *iter) 975 { 976 /* Keep looping while we either have more fields to look at, or we are 977 * inside a <group> and can go up a level. 978 */ 979 while (iter_more_fields(iter) || iter->level > 0) { 980 if (iter_more_fields(iter)) { 981 iter_start_field(iter, iter->field->next); 982 return true; 983 } 984 985 assert(iter->level >= 0); 986 987 if (iter_more_array_elems(iter)) { 988 iter_advance_array(iter); 989 return true; 990 } 991 992 /* At this point, we reached the end of the <group> and were on the last 993 * iteration. So it's time to go back to the parent and then advance the 994 * field. 995 */ 996 iter_pop_array(iter); 997 } 998 999 return false; 1000 } 1001 1002 static bool 1003 iter_decode_field_raw(struct intel_field_iterator *iter, uint64_t *qw) 1004 { 1005 *qw = 0; 1006 1007 int field_start = iter->p_bit + iter->start_bit; 1008 int field_end = iter->p_bit + iter->end_bit; 1009 1010 const uint32_t *p = iter->p + (iter->start_bit / 32); 1011 if (iter->p_end && p >= iter->p_end) 1012 return false; 1013 1014 if ((field_end - field_start) > 32) { 1015 if (!iter->p_end || (p + 1) < iter->p_end) 1016 *qw = ((uint64_t) p[1]) << 32; 1017 *qw |= p[0]; 1018 } else 1019 *qw = p[0]; 1020 1021 *qw = field_value(*qw, field_start, field_end); 1022 1023 /* Address & offset types have to be aligned to dwords, their start bit is 1024 * a reminder of the alignment requirement. 1025 */ 1026 if (iter->field->type.kind == INTEL_TYPE_ADDRESS || 1027 iter->field->type.kind == INTEL_TYPE_OFFSET) 1028 *qw <<= field_start % 32; 1029 1030 return true; 1031 } 1032 1033 static bool 1034 iter_decode_field(struct intel_field_iterator *iter) 1035 { 1036 union { 1037 uint64_t qw; 1038 float f; 1039 } v; 1040 1041 if (iter->field->name) 1042 snprintf(iter->name, sizeof(iter->name), "%s", iter->field->name); 1043 else 1044 memset(iter->name, 0, sizeof(iter->name)); 1045 1046 memset(&v, 0, sizeof(v)); 1047 1048 if (!iter_decode_field_raw(iter, &iter->raw_value)) 1049 return false; 1050 1051 const char *enum_name = NULL; 1052 1053 v.qw = iter->raw_value; 1054 switch (iter->field->type.kind) { 1055 case INTEL_TYPE_UNKNOWN: 1056 case INTEL_TYPE_INT: { 1057 snprintf(iter->value, sizeof(iter->value), "%"PRId64, v.qw); 1058 enum_name = intel_get_enum_name(&iter->field->inline_enum, v.qw); 1059 break; 1060 } 1061 case INTEL_TYPE_UINT: { 1062 snprintf(iter->value, sizeof(iter->value), "%"PRIu64, v.qw); 1063 enum_name = intel_get_enum_name(&iter->field->inline_enum, v.qw); 1064 break; 1065 } 1066 case INTEL_TYPE_BOOL: { 1067 const char *true_string = 1068 iter->print_colors ? "\e[0;35mtrue\e[0m" : "true"; 1069 snprintf(iter->value, sizeof(iter->value), "%s", 1070 v.qw ? true_string : "false"); 1071 break; 1072 } 1073 case INTEL_TYPE_FLOAT: 1074 snprintf(iter->value, sizeof(iter->value), "%f", v.f); 1075 break; 1076 case INTEL_TYPE_ADDRESS: 1077 case INTEL_TYPE_OFFSET: 1078 snprintf(iter->value, sizeof(iter->value), "0x%08"PRIx64, v.qw); 1079 break; 1080 case INTEL_TYPE_STRUCT: 1081 snprintf(iter->value, sizeof(iter->value), "<struct %s>", 1082 iter->field->type.intel_struct->name); 1083 iter->struct_desc = 1084 intel_spec_find_struct(iter->group->spec, 1085 iter->field->type.intel_struct->name); 1086 break; 1087 case INTEL_TYPE_UFIXED: 1088 snprintf(iter->value, sizeof(iter->value), "%f", 1089 (float) v.qw / (1 << iter->field->type.f)); 1090 break; 1091 case INTEL_TYPE_SFIXED: { 1092 /* Sign extend before converting */ 1093 int bits = iter->field->type.i + iter->field->type.f + 1; 1094 int64_t v_sign_extend = ((int64_t)(v.qw << (64 - bits))) >> (64 - bits); 1095 snprintf(iter->value, sizeof(iter->value), "%f", 1096 (float) v_sign_extend / (1 << iter->field->type.f)); 1097 break; 1098 } 1099 case INTEL_TYPE_MBO: 1100 break; 1101 case INTEL_TYPE_ENUM: { 1102 snprintf(iter->value, sizeof(iter->value), "%"PRId64, v.qw); 1103 enum_name = intel_get_enum_name(iter->field->type.intel_enum, v.qw); 1104 break; 1105 } 1106 } 1107 1108 if (strlen(iter->group->name) == 0) { 1109 int length = strlen(iter->name); 1110 assert(iter->level >= 0); 1111 1112 int level = 1; 1113 char *buf = iter->name + length; 1114 while (level <= iter->level) { 1115 int printed = snprintf(buf, sizeof(iter->name) - length, 1116 "[%i]", iter->array_iter[level]); 1117 level++; 1118 length += printed; 1119 buf += printed; 1120 } 1121 } 1122 1123 if (enum_name) { 1124 int length = strlen(iter->value); 1125 snprintf(iter->value + length, sizeof(iter->value) - length, 1126 " (%s)", enum_name); 1127 } else if (strcmp(iter->name, "Surface Format") == 0 || 1128 strcmp(iter->name, "Source Element Format") == 0) { 1129 if (isl_format_is_valid((enum isl_format)v.qw)) { 1130 const char *fmt_name = isl_format_get_name((enum isl_format)v.qw); 1131 int length = strlen(iter->value); 1132 snprintf(iter->value + length, sizeof(iter->value) - length, 1133 " (%s)", fmt_name); 1134 } 1135 } 1136 1137 return true; 1138 } 1139 1140 void 1141 intel_field_iterator_init(struct intel_field_iterator *iter, 1142 struct intel_group *group, 1143 const uint32_t *p, int p_bit, 1144 bool print_colors) 1145 { 1146 memset(iter, 0, sizeof(*iter)); 1147 1148 iter->groups[iter->level] = group; 1149 iter->group = group; 1150 iter->p = p; 1151 iter->p_bit = p_bit; 1152 1153 int length = intel_group_get_length(iter->group, iter->p); 1154 assert(length >= 0 && "error the length is unknown!"); 1155 iter->p_end = length >= 0 ? &p[length] : NULL; 1156 iter->print_colors = print_colors; 1157 } 1158 1159 bool 1160 intel_field_iterator_next(struct intel_field_iterator *iter) 1161 { 1162 /* Initial condition */ 1163 if (!iter->field) { 1164 if (iter->group->fields) 1165 iter_start_field(iter, iter->group->fields); 1166 1167 bool result = iter_decode_field(iter); 1168 if (!result && iter->p_end) { 1169 /* We're dealing with a non empty struct of length=0 (BLEND_STATE on 1170 * Gen 7.5) 1171 */ 1172 assert(iter->group->dw_length == 0); 1173 } 1174 1175 return result; 1176 } 1177 1178 if (!iter_advance_field(iter)) 1179 return false; 1180 1181 if (!iter_decode_field(iter)) 1182 return false; 1183 1184 return true; 1185 } 1186 1187 static void 1188 print_dword_header(FILE *outfile, 1189 struct intel_field_iterator *iter, 1190 uint64_t offset, uint32_t dword) 1191 { 1192 fprintf(outfile, "0x%08"PRIx64": 0x%08x : Dword %d\n", 1193 offset + 4 * dword, iter->p[dword], dword); 1194 } 1195 1196 bool 1197 intel_field_is_header(struct intel_field *field) 1198 { 1199 uint32_t bits; 1200 1201 /* Instructions are identified by the first DWord. */ 1202 if (field->start >= 32 || 1203 field->end >= 32) 1204 return false; 1205 1206 bits = (1ULL << (field->end - field->start + 1)) - 1; 1207 bits <<= field->start; 1208 1209 return (field->parent->opcode_mask & bits) != 0; 1210 } 1211 1212 void 1213 intel_print_group(FILE *outfile, struct intel_group *group, uint64_t offset, 1214 const uint32_t *p, int p_bit, bool color) 1215 { 1216 struct intel_field_iterator iter; 1217 int last_dword = -1; 1218 1219 intel_field_iterator_init(&iter, group, p, p_bit, color); 1220 while (intel_field_iterator_next(&iter)) { 1221 int iter_dword = iter.end_bit / 32; 1222 if (last_dword != iter_dword) { 1223 for (int i = last_dword + 1; i <= iter_dword; i++) 1224 print_dword_header(outfile, &iter, offset, i); 1225 last_dword = iter_dword; 1226 } 1227 if (!intel_field_is_header(iter.field)) { 1228 fprintf(outfile, " %s: %s\n", iter.name, iter.value); 1229 if (iter.struct_desc) { 1230 int struct_dword = iter.start_bit / 32; 1231 uint64_t struct_offset = offset + 4 * struct_dword; 1232 intel_print_group(outfile, iter.struct_desc, struct_offset, 1233 &p[struct_dword], iter.start_bit % 32, color); 1234 } 1235 } 1236 } 1237 } 1238
Indexes created Thu Jul 23 00:25:05 UTC 2026