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 "gen_decoder.h" 37 38 #include "genxml/genX_xml.h" 39 40 #define XML_BUFFER_SIZE 4096 41 #define MAX_VALUE_ITEMS 128 42 43 struct location { 44 const char *filename; 45 int line_number; 46 }; 47 48 struct parser_context { 49 XML_Parser parser; 50 int foo; 51 struct location loc; 52 53 struct gen_group *group; 54 struct gen_enum *enoom; 55 56 int n_values, n_allocated_values; 57 struct gen_value **values; 58 59 struct gen_field *last_field; 60 61 struct gen_spec *spec; 62 }; 63 64 const char * 65 gen_group_get_name(struct gen_group *group) 66 { 67 return group->name; 68 } 69 70 uint32_t 71 gen_group_get_opcode(struct gen_group *group) 72 { 73 return group->opcode; 74 } 75 76 struct gen_group * 77 gen_spec_find_struct(struct gen_spec *spec, const char *name) 78 { 79 struct hash_entry *entry = _mesa_hash_table_search(spec->structs, 80 name); 81 return entry ? entry->data : NULL; 82 } 83 84 struct gen_group * 85 gen_spec_find_register(struct gen_spec *spec, uint32_t offset) 86 { 87 struct hash_entry *entry = 88 _mesa_hash_table_search(spec->registers_by_offset, 89 (void *) (uintptr_t) offset); 90 return entry ? entry->data : NULL; 91 } 92 93 struct gen_group * 94 gen_spec_find_register_by_name(struct gen_spec *spec, const char *name) 95 { 96 struct hash_entry *entry = 97 _mesa_hash_table_search(spec->registers_by_name, name); 98 return entry ? entry->data : NULL; 99 } 100 101 struct gen_enum * 102 gen_spec_find_enum(struct gen_spec *spec, const char *name) 103 { 104 struct hash_entry *entry = _mesa_hash_table_search(spec->enums, 105 name); 106 return entry ? entry->data : NULL; 107 } 108 109 uint32_t 110 gen_spec_get_gen(struct gen_spec *spec) 111 { 112 return spec->gen; 113 } 114 115 static void __attribute__((noreturn)) 116 fail(struct location *loc, const char *msg, ...) 117 { 118 va_list ap; 119 120 va_start(ap, msg); 121 fprintf(stderr, "%s:%d: error: ", 122 loc->filename, loc->line_number); 123 vfprintf(stderr, msg, ap); 124 fprintf(stderr, "\n"); 125 va_end(ap); 126 exit(EXIT_FAILURE); 127 } 128 129 static void 130 get_group_offset_count(const char **atts, uint32_t *offset, uint32_t *count, 131 uint32_t *size, bool *variable) 132 { 133 for (int i = 0; atts[i]; i += 2) { 134 char *p; 135 136 if (strcmp(atts[i], "count") == 0) { 137 *count = strtoul(atts[i + 1], &p, 0); 138 if (*count == 0) 139 *variable = true; 140 } else if (strcmp(atts[i], "start") == 0) { 141 *offset = strtoul(atts[i + 1], &p, 0); 142 } else if (strcmp(atts[i], "size") == 0) { 143 *size = strtoul(atts[i + 1], &p, 0); 144 } 145 } 146 return; 147 } 148 149 static struct gen_group * 150 create_group(struct parser_context *ctx, 151 const char *name, 152 const char **atts, 153 struct gen_group *parent) 154 { 155 struct gen_group *group; 156 157 group = rzalloc(ctx->spec, struct gen_group); 158 if (name) 159 group->name = ralloc_strdup(group, name); 160 161 group->spec = ctx->spec; 162 group->variable = false; 163 164 for (int i = 0; atts[i]; i += 2) { 165 char *p; 166 if (strcmp(atts[i], "length") == 0) { 167 group->dw_length = strtoul(atts[i + 1], &p, 0); 168 } 169 } 170 171 if (parent) { 172 group->parent = parent; 173 get_group_offset_count(atts, 174 &group->group_offset, 175 &group->group_count, 176 &group->group_size, 177 &group->variable); 178 } 179 180 return group; 181 } 182 183 static struct gen_enum * 184 create_enum(struct parser_context *ctx, const char *name, const char **atts) 185 { 186 struct gen_enum *e; 187 188 e = rzalloc(ctx->spec, struct gen_enum); 189 if (name) 190 e->name = ralloc_strdup(e, name); 191 192 return e; 193 } 194 195 static void 196 get_register_offset(const char **atts, uint32_t *offset) 197 { 198 for (int i = 0; atts[i]; i += 2) { 199 char *p; 200 201 if (strcmp(atts[i], "num") == 0) 202 *offset = strtoul(atts[i + 1], &p, 0); 203 } 204 return; 205 } 206 207 static void 208 get_start_end_pos(int *start, int *end) 209 { 210 /* start value has to be mod with 32 as we need the relative 211 * start position in the first DWord. For the end position, add 212 * the length of the field to the start position to get the 213 * relative postion in the 64 bit address. 214 */ 215 if (*end - *start > 32) { 216 int len = *end - *start; 217 *start = *start % 32; 218 *end = *start + len; 219 } else { 220 *start = *start % 32; 221 *end = *end % 32; 222 } 223 224 return; 225 } 226 227 static inline uint64_t 228 mask(int start, int end) 229 { 230 uint64_t v; 231 232 v = ~0ULL >> (63 - end + start); 233 234 return v << start; 235 } 236 237 static inline uint64_t 238 field_value(uint64_t value, int start, int end) 239 { 240 get_start_end_pos(&start, &end); 241 return (value & mask(start, end)) >> (start); 242 } 243 244 static struct gen_type 245 string_to_type(struct parser_context *ctx, const char *s) 246 { 247 int i, f; 248 struct gen_group *g; 249 struct gen_enum *e; 250 251 if (strcmp(s, "int") == 0) 252 return (struct gen_type) { .kind = GEN_TYPE_INT }; 253 else if (strcmp(s, "uint") == 0) 254 return (struct gen_type) { .kind = GEN_TYPE_UINT }; 255 else if (strcmp(s, "bool") == 0) 256 return (struct gen_type) { .kind = GEN_TYPE_BOOL }; 257 else if (strcmp(s, "float") == 0) 258 return (struct gen_type) { .kind = GEN_TYPE_FLOAT }; 259 else if (strcmp(s, "address") == 0) 260 return (struct gen_type) { .kind = GEN_TYPE_ADDRESS }; 261 else if (strcmp(s, "offset") == 0) 262 return (struct gen_type) { .kind = GEN_TYPE_OFFSET }; 263 else if (sscanf(s, "u%d.%d", &i, &f) == 2) 264 return (struct gen_type) { .kind = GEN_TYPE_UFIXED, .i = i, .f = f }; 265 else if (sscanf(s, "s%d.%d", &i, &f) == 2) 266 return (struct gen_type) { .kind = GEN_TYPE_SFIXED, .i = i, .f = f }; 267 else if (g = gen_spec_find_struct(ctx->spec, s), g != NULL) 268 return (struct gen_type) { .kind = GEN_TYPE_STRUCT, .gen_struct = g }; 269 else if (e = gen_spec_find_enum(ctx->spec, s), e != NULL) 270 return (struct gen_type) { .kind = GEN_TYPE_ENUM, .gen_enum = e }; 271 else if (strcmp(s, "mbo") == 0) 272 return (struct gen_type) { .kind = GEN_TYPE_MBO }; 273 else 274 fail(&ctx->loc, "invalid type: %s", s); 275 } 276 277 static struct gen_field * 278 create_field(struct parser_context *ctx, const char **atts) 279 { 280 struct gen_field *field; 281 282 field = rzalloc(ctx->group, struct gen_field); 283 field->parent = ctx->group; 284 285 for (int i = 0; atts[i]; i += 2) { 286 char *p; 287 288 if (strcmp(atts[i], "name") == 0) 289 field->name = ralloc_strdup(field, atts[i + 1]); 290 else if (strcmp(atts[i], "start") == 0) 291 field->start = strtoul(atts[i + 1], &p, 0); 292 else if (strcmp(atts[i], "end") == 0) { 293 field->end = strtoul(atts[i + 1], &p, 0); 294 } else if (strcmp(atts[i], "type") == 0) 295 field->type = string_to_type(ctx, atts[i + 1]); 296 else if (strcmp(atts[i], "default") == 0 && 297 field->start >= 16 && field->end <= 31) { 298 field->has_default = true; 299 field->default_value = strtoul(atts[i + 1], &p, 0); 300 } 301 } 302 303 return field; 304 } 305 306 static struct gen_value * 307 create_value(struct parser_context *ctx, const char **atts) 308 { 309 struct gen_value *value = rzalloc(ctx->values, struct gen_value); 310 311 for (int i = 0; atts[i]; i += 2) { 312 if (strcmp(atts[i], "name") == 0) 313 value->name = ralloc_strdup(value, atts[i + 1]); 314 else if (strcmp(atts[i], "value") == 0) 315 value->value = strtoul(atts[i + 1], NULL, 0); 316 } 317 318 return value; 319 } 320 321 static struct gen_field * 322 create_and_append_field(struct parser_context *ctx, 323 const char **atts) 324 { 325 struct gen_field *field = create_field(ctx, atts); 326 struct gen_field *prev = NULL, *list = ctx->group->fields; 327 328 while (list && field->start > list->start) { 329 prev = list; 330 list = list->next; 331 } 332 333 field->next = list; 334 if (prev == NULL) 335 ctx->group->fields = field; 336 else 337 prev->next = field; 338 339 return field; 340 } 341 342 static void 343 start_element(void *data, const char *element_name, const char **atts) 344 { 345 struct parser_context *ctx = data; 346 const char *name = NULL; 347 const char *gen = NULL; 348 349 ctx->loc.line_number = XML_GetCurrentLineNumber(ctx->parser); 350 351 for (int i = 0; atts[i]; i += 2) { 352 if (strcmp(atts[i], "name") == 0) 353 name = atts[i + 1]; 354 else if (strcmp(atts[i], "gen") == 0) 355 gen = atts[i + 1]; 356 } 357 358 if (strcmp(element_name, "genxml") == 0) { 359 if (name == NULL) 360 fail(&ctx->loc, "no platform name given"); 361 if (gen == NULL) 362 fail(&ctx->loc, "no gen given"); 363 364 int major, minor; 365 int n = sscanf(gen, "%d.%d", &major, &minor); 366 if (n == 0) 367 fail(&ctx->loc, "invalid gen given: %s", gen); 368 if (n == 1) 369 minor = 0; 370 371 ctx->spec->gen = gen_make_gen(major, minor); 372 } else if (strcmp(element_name, "instruction") == 0 || 373 strcmp(element_name, "struct") == 0) { 374 ctx->group = create_group(ctx, name, atts, NULL); 375 } else if (strcmp(element_name, "register") == 0) { 376 ctx->group = create_group(ctx, name, atts, NULL); 377 get_register_offset(atts, &ctx->group->register_offset); 378 } else if (strcmp(element_name, "group") == 0) { 379 struct gen_group *previous_group = ctx->group; 380 while (previous_group->next) 381 previous_group = previous_group->next; 382 383 struct gen_group *group = create_group(ctx, "", atts, ctx->group); 384 previous_group->next = group; 385 ctx->group = group; 386 } else if (strcmp(element_name, "field") == 0) { 387 ctx->last_field = create_and_append_field(ctx, atts); 388 } else if (strcmp(element_name, "enum") == 0) { 389 ctx->enoom = create_enum(ctx, name, atts); 390 } else if (strcmp(element_name, "value") == 0) { 391 if (ctx->n_values >= ctx->n_allocated_values) { 392 ctx->n_allocated_values = MAX2(2, ctx->n_allocated_values * 2); 393 ctx->values = reralloc_array_size(ctx->spec, ctx->values, 394 sizeof(struct gen_value *), 395 ctx->n_allocated_values); 396 } 397 assert(ctx->n_values < ctx->n_allocated_values); 398 ctx->values[ctx->n_values++] = create_value(ctx, atts); 399 } 400 401 } 402 403 static void 404 end_element(void *data, const char *name) 405 { 406 struct parser_context *ctx = data; 407 struct gen_spec *spec = ctx->spec; 408 409 if (strcmp(name, "instruction") == 0 || 410 strcmp(name, "struct") == 0 || 411 strcmp(name, "register") == 0) { 412 struct gen_group *group = ctx->group; 413 struct gen_field *list = group->fields; 414 415 ctx->group = ctx->group->parent; 416 417 while (list && list->end <= 31) { 418 if (list->start >= 16 && list->has_default) { 419 group->opcode_mask |= 420 mask(list->start % 32, list->end % 32); 421 group->opcode |= list->default_value << list->start; 422 } 423 list = list->next; 424 } 425 426 if (strcmp(name, "instruction") == 0) 427 _mesa_hash_table_insert(spec->commands, group->name, group); 428 else if (strcmp(name, "struct") == 0) 429 _mesa_hash_table_insert(spec->structs, group->name, group); 430 else if (strcmp(name, "register") == 0) { 431 _mesa_hash_table_insert(spec->registers_by_name, group->name, group); 432 _mesa_hash_table_insert(spec->registers_by_offset, 433 (void *) (uintptr_t) group->register_offset, 434 group); 435 } 436 } else if (strcmp(name, "group") == 0) { 437 ctx->group = ctx->group->parent; 438 } else if (strcmp(name, "field") == 0) { 439 struct gen_field *field = ctx->last_field; 440 ctx->last_field = NULL; 441 field->inline_enum.values = ctx->values; 442 field->inline_enum.nvalues = ctx->n_values; 443 ctx->values = ralloc_array(ctx->spec, struct gen_value*, ctx->n_allocated_values = 2); 444 ctx->n_values = 0; 445 } else if (strcmp(name, "enum") == 0) { 446 struct gen_enum *e = ctx->enoom; 447 e->values = ctx->values; 448 e->nvalues = ctx->n_values; 449 ctx->values = ralloc_array(ctx->spec, struct gen_value*, ctx->n_allocated_values = 2); 450 ctx->n_values = 0; 451 ctx->enoom = NULL; 452 _mesa_hash_table_insert(spec->enums, e->name, e); 453 } 454 } 455 456 static void 457 character_data(void *data, const XML_Char *s, int len) 458 { 459 } 460 461 static int 462 devinfo_to_gen(const struct gen_device_info *devinfo) 463 { 464 int value = 10 * devinfo->gen; 465 466 if (devinfo->is_baytrail || devinfo->is_haswell) 467 value += 5; 468 469 return value; 470 } 471 472 static uint32_t zlib_inflate(const void *compressed_data, 473 uint32_t compressed_len, 474 void **out_ptr) 475 { 476 struct z_stream_s zstream; 477 void *out; 478 479 memset(&zstream, 0, sizeof(zstream)); 480 481 zstream.next_in = (unsigned char *)compressed_data; 482 zstream.avail_in = compressed_len; 483 484 if (inflateInit(&zstream) != Z_OK) 485 return 0; 486 487 out = malloc(4096); 488 zstream.next_out = out; 489 zstream.avail_out = 4096; 490 491 do { 492 switch (inflate(&zstream, Z_SYNC_FLUSH)) { 493 case Z_STREAM_END: 494 goto end; 495 case Z_OK: 496 break; 497 default: 498 inflateEnd(&zstream); 499 return 0; 500 } 501 502 if (zstream.avail_out) 503 break; 504 505 out = realloc(out, 2*zstream.total_out); 506 if (out == NULL) { 507 inflateEnd(&zstream); 508 return 0; 509 } 510 511 zstream.next_out = (unsigned char *)out + zstream.total_out; 512 zstream.avail_out = zstream.total_out; 513 } while (1); 514 end: 515 inflateEnd(&zstream); 516 *out_ptr = out; 517 return zstream.total_out; 518 } 519 520 static uint32_t _hash_uint32(const void *key) 521 { 522 return (uint32_t) (uintptr_t) key; 523 } 524 525 struct gen_spec * 526 gen_spec_load(const struct gen_device_info *devinfo) 527 { 528 struct parser_context ctx; 529 void *buf; 530 uint8_t *text_data = NULL; 531 uint32_t text_offset = 0, text_length = 0, total_length; 532 uint32_t gen_10 = devinfo_to_gen(devinfo); 533 534 for (int i = 0; i < ARRAY_SIZE(genxml_files_table); i++) { 535 if (genxml_files_table[i].gen_10 == gen_10) { 536 text_offset = genxml_files_table[i].offset; 537 text_length = genxml_files_table[i].length; 538 break; 539 } 540 } 541 542 if (text_length == 0) { 543 fprintf(stderr, "unable to find gen (%u) data\n", gen_10); 544 return NULL; 545 } 546 547 memset(&ctx, 0, sizeof ctx); 548 ctx.parser = XML_ParserCreate(NULL); 549 XML_SetUserData(ctx.parser, &ctx); 550 if (ctx.parser == NULL) { 551 fprintf(stderr, "failed to create parser\n"); 552 return NULL; 553 } 554 555 XML_SetElementHandler(ctx.parser, start_element, end_element); 556 XML_SetCharacterDataHandler(ctx.parser, character_data); 557 558 ctx.spec = rzalloc(NULL, struct gen_spec); 559 560 ctx.spec->commands = 561 _mesa_hash_table_create(ctx.spec, _mesa_hash_string, _mesa_key_string_equal); 562 ctx.spec->structs = 563 _mesa_hash_table_create(ctx.spec, _mesa_hash_string, _mesa_key_string_equal); 564 ctx.spec->registers_by_name = 565 _mesa_hash_table_create(ctx.spec, _mesa_hash_string, _mesa_key_string_equal); 566 ctx.spec->registers_by_offset = 567 _mesa_hash_table_create(ctx.spec, _hash_uint32, _mesa_key_pointer_equal); 568 ctx.spec->enums = 569 _mesa_hash_table_create(ctx.spec, _mesa_hash_string, _mesa_key_string_equal); 570 571 ctx.spec->access_cache = 572 _mesa_hash_table_create(ctx.spec, _mesa_hash_string, _mesa_key_string_equal); 573 574 total_length = zlib_inflate(compress_genxmls, 575 sizeof(compress_genxmls), 576 (void **) &text_data); 577 assert(text_offset + text_length <= total_length); 578 579 buf = XML_GetBuffer(ctx.parser, text_length); 580 memcpy(buf, &text_data[text_offset], text_length); 581 582 if (XML_ParseBuffer(ctx.parser, text_length, true) == 0) { 583 fprintf(stderr, 584 "Error parsing XML at line %ld col %ld byte %ld/%u: %s\n", 585 XML_GetCurrentLineNumber(ctx.parser), 586 XML_GetCurrentColumnNumber(ctx.parser), 587 XML_GetCurrentByteIndex(ctx.parser), text_length, 588 XML_ErrorString(XML_GetErrorCode(ctx.parser))); 589 XML_ParserFree(ctx.parser); 590 free(text_data); 591 return NULL; 592 } 593 594 XML_ParserFree(ctx.parser); 595 free(text_data); 596 597 return ctx.spec; 598 } 599 600 struct gen_spec * 601 gen_spec_load_from_path(const struct gen_device_info *devinfo, 602 const char *path) 603 { 604 struct parser_context ctx; 605 size_t len, filename_len = strlen(path) + 20; 606 char *filename = malloc(filename_len); 607 void *buf; 608 FILE *input; 609 610 len = snprintf(filename, filename_len, "%s/gen%i.xml", 611 path, devinfo_to_gen(devinfo)); 612 assert(len < filename_len); 613 614 input = fopen(filename, "r"); 615 if (input == NULL) { 616 fprintf(stderr, "failed to open xml description\n"); 617 free(filename); 618 return NULL; 619 } 620 621 memset(&ctx, 0, sizeof ctx); 622 ctx.parser = XML_ParserCreate(NULL); 623 XML_SetUserData(ctx.parser, &ctx); 624 if (ctx.parser == NULL) { 625 fprintf(stderr, "failed to create parser\n"); 626 fclose(input); 627 free(filename); 628 return NULL; 629 } 630 631 XML_SetElementHandler(ctx.parser, start_element, end_element); 632 XML_SetCharacterDataHandler(ctx.parser, character_data); 633 ctx.loc.filename = filename; 634 ctx.spec = rzalloc(NULL, struct gen_spec); 635 636 do { 637 buf = XML_GetBuffer(ctx.parser, XML_BUFFER_SIZE); 638 len = fread(buf, 1, XML_BUFFER_SIZE, input); 639 if (len == 0) { 640 fprintf(stderr, "fread: %m\n"); 641 free(ctx.spec); 642 ctx.spec = NULL; 643 goto end; 644 } 645 if (XML_ParseBuffer(ctx.parser, len, len == 0) == 0) { 646 fprintf(stderr, 647 "Error parsing XML at line %ld col %ld: %s\n", 648 XML_GetCurrentLineNumber(ctx.parser), 649 XML_GetCurrentColumnNumber(ctx.parser), 650 XML_ErrorString(XML_GetErrorCode(ctx.parser))); 651 free(ctx.spec); 652 ctx.spec = NULL; 653 goto end; 654 } 655 } while (len > 0); 656 657 end: 658 XML_ParserFree(ctx.parser); 659 660 fclose(input); 661 free(filename); 662 663 return ctx.spec; 664 } 665 666 void gen_spec_destroy(struct gen_spec *spec) 667 { 668 ralloc_free(spec); 669 } 670 671 struct gen_group * 672 gen_spec_find_instruction(struct gen_spec *spec, const uint32_t *p) 673 { 674 struct hash_entry *entry; 675 676 hash_table_foreach(spec->commands, entry) { 677 struct gen_group *command = entry->data; 678 uint32_t opcode = *p & command->opcode_mask; 679 if (opcode == command->opcode) 680 return command; 681 } 682 683 return NULL; 684 } 685 686 struct gen_field * 687 gen_group_find_field(struct gen_group *group, const char *name) 688 { 689 char path[256]; 690 snprintf(path, sizeof(path), "%s/%s", group->name, name); 691 692 struct gen_spec *spec = group->spec; 693 struct hash_entry *entry = _mesa_hash_table_search(spec->access_cache, 694 path); 695 if (entry) 696 return entry->data; 697 698 struct gen_field *field = group->fields; 699 while (field) { 700 if (strcmp(field->name, name) == 0) { 701 _mesa_hash_table_insert(spec->access_cache, 702 ralloc_strdup(spec, path), 703 field); 704 return field; 705 } 706 field = field->next; 707 } 708 709 return NULL; 710 } 711 712 int 713 gen_group_get_length(struct gen_group *group, const uint32_t *p) 714 { 715 uint32_t h = p[0]; 716 uint32_t type = field_value(h, 29, 31); 717 718 switch (type) { 719 case 0: /* MI */ { 720 uint32_t opcode = field_value(h, 23, 28); 721 if (opcode < 16) 722 return 1; 723 else 724 return field_value(h, 0, 7) + 2; 725 break; 726 } 727 728 case 2: /* BLT */ { 729 return field_value(h, 0, 7) + 2; 730 } 731 732 case 3: /* Render */ { 733 uint32_t subtype = field_value(h, 27, 28); 734 uint32_t opcode = field_value(h, 24, 26); 735 uint16_t whole_opcode = field_value(h, 16, 31); 736 switch (subtype) { 737 case 0: 738 if (whole_opcode == 0x6104 /* PIPELINE_SELECT_965 */) 739 return 1; 740 else if (opcode < 2) 741 return field_value(h, 0, 7) + 2; 742 else 743 return -1; 744 case 1: 745 if (opcode < 2) 746 return 1; 747 else 748 return -1; 749 case 2: { 750 if (opcode == 0) 751 return field_value(h, 0, 7) + 2; 752 else if (opcode < 3) 753 return field_value(h, 0, 15) + 2; 754 else 755 return -1; 756 } 757 case 3: 758 if (whole_opcode == 0x780b) 759 return 1; 760 else if (opcode < 4) 761 return field_value(h, 0, 7) + 2; 762 else 763 return -1; 764 } 765 } 766 } 767 768 return -1; 769 } 770 771 static const char * 772 gen_get_enum_name(struct gen_enum *e, uint64_t value) 773 { 774 for (int i = 0; i < e->nvalues; i++) { 775 if (e->values[i]->value == value) { 776 return e->values[i]->name; 777 } 778 } 779 return NULL; 780 } 781 782 static bool 783 iter_more_fields(const struct gen_field_iterator *iter) 784 { 785 return iter->field != NULL && iter->field->next != NULL; 786 } 787 788 static uint32_t 789 iter_group_offset_bits(const struct gen_field_iterator *iter, 790 uint32_t group_iter) 791 { 792 return iter->group->group_offset + (group_iter * iter->group->group_size); 793 } 794 795 static bool 796 iter_more_groups(const struct gen_field_iterator *iter) 797 { 798 if (iter->group->variable) { 799 return iter_group_offset_bits(iter, iter->group_iter + 1) < 800 (gen_group_get_length(iter->group, iter->p) * 32); 801 } else { 802 return (iter->group_iter + 1) < iter->group->group_count || 803 iter->group->next != NULL; 804 } 805 } 806 807 static void 808 iter_advance_group(struct gen_field_iterator *iter) 809 { 810 if (iter->group->variable) 811 iter->group_iter++; 812 else { 813 if ((iter->group_iter + 1) < iter->group->group_count) { 814 iter->group_iter++; 815 } else { 816 iter->group = iter->group->next; 817 iter->group_iter = 0; 818 } 819 } 820 821 iter->field = iter->group->fields; 822 } 823 824 static bool 825 iter_advance_field(struct gen_field_iterator *iter) 826 { 827 if (iter_more_fields(iter)) { 828 iter->field = iter->field->next; 829 } else { 830 if (!iter_more_groups(iter)) 831 return false; 832 833 iter_advance_group(iter); 834 } 835 836 if (iter->field->name) 837 strncpy(iter->name, iter->field->name, sizeof(iter->name)); 838 else 839 memset(iter->name, 0, sizeof(iter->name)); 840 841 int group_member_offset = iter_group_offset_bits(iter, iter->group_iter); 842 843 iter->bit = group_member_offset + iter->field->start; 844 iter->struct_desc = NULL; 845 846 return true; 847 } 848 849 static uint64_t 850 iter_decode_field_raw(struct gen_field_iterator *iter) 851 { 852 uint64_t qw = 0; 853 854 int field_start = iter->p_bit + iter->bit; 855 int field_end = field_start + (iter->field->end - iter->field->start); 856 857 const uint32_t *p = iter->p + (iter->bit / 32); 858 if ((field_end - field_start) > 32) { 859 if ((p + 1) < iter->p_end) 860 qw = ((uint64_t) p[1]) << 32; 861 qw |= p[0]; 862 } else 863 qw = p[0]; 864 865 qw = field_value(qw, field_start, field_end); 866 867 /* Address & offset types have to be aligned to dwords, their start bit is 868 * a reminder of the alignment requirement. 869 */ 870 if (iter->field->type.kind == GEN_TYPE_ADDRESS || 871 iter->field->type.kind == GEN_TYPE_OFFSET) 872 qw <<= field_start % 32; 873 874 return qw; 875 } 876 877 static void 878 iter_decode_field(struct gen_field_iterator *iter) 879 { 880 union { 881 uint64_t qw; 882 float f; 883 } v; 884 885 if (iter->field->name) 886 strncpy(iter->name, iter->field->name, sizeof(iter->name)); 887 else 888 memset(iter->name, 0, sizeof(iter->name)); 889 890 memset(&v, 0, sizeof(v)); 891 892 iter->raw_value = iter_decode_field_raw(iter); 893 894 const char *enum_name = NULL; 895 896 v.qw = iter->raw_value; 897 switch (iter->field->type.kind) { 898 case GEN_TYPE_UNKNOWN: 899 case GEN_TYPE_INT: { 900 snprintf(iter->value, sizeof(iter->value), "%"PRId64, v.qw); 901 enum_name = gen_get_enum_name(&iter->field->inline_enum, v.qw); 902 break; 903 } 904 case GEN_TYPE_UINT: { 905 snprintf(iter->value, sizeof(iter->value), "%"PRIu64, v.qw); 906 enum_name = gen_get_enum_name(&iter->field->inline_enum, v.qw); 907 break; 908 } 909 case GEN_TYPE_BOOL: { 910 const char *true_string = 911 iter->print_colors ? "\e[0;35mtrue\e[0m" : "true"; 912 snprintf(iter->value, sizeof(iter->value), "%s", 913 v.qw ? true_string : "false"); 914 break; 915 } 916 case GEN_TYPE_FLOAT: 917 snprintf(iter->value, sizeof(iter->value), "%f", v.f); 918 break; 919 case GEN_TYPE_ADDRESS: 920 case GEN_TYPE_OFFSET: 921 snprintf(iter->value, sizeof(iter->value), "0x%08"PRIx64, v.qw); 922 break; 923 case GEN_TYPE_STRUCT: 924 snprintf(iter->value, sizeof(iter->value), "<struct %s>", 925 iter->field->type.gen_struct->name); 926 iter->struct_desc = 927 gen_spec_find_struct(iter->group->spec, 928 iter->field->type.gen_struct->name); 929 break; 930 case GEN_TYPE_UFIXED: 931 snprintf(iter->value, sizeof(iter->value), "%f", 932 (float) v.qw / (1 << iter->field->type.f)); 933 break; 934 case GEN_TYPE_SFIXED: 935 /* FIXME: Sign extend extracted field. */ 936 snprintf(iter->value, sizeof(iter->value), "%s", "foo"); 937 break; 938 case GEN_TYPE_MBO: 939 break; 940 case GEN_TYPE_ENUM: { 941 snprintf(iter->value, sizeof(iter->value), "%"PRId64, v.qw); 942 enum_name = gen_get_enum_name(iter->field->type.gen_enum, v.qw); 943 break; 944 } 945 } 946 947 if (strlen(iter->group->name) == 0) { 948 int length = strlen(iter->name); 949 snprintf(iter->name + length, sizeof(iter->name) - length, 950 "[%i]", iter->group_iter); 951 } 952 953 if (enum_name) { 954 int length = strlen(iter->value); 955 snprintf(iter->value + length, sizeof(iter->value) - length, 956 " (%s)", enum_name); 957 } 958 } 959 960 void 961 gen_field_iterator_init(struct gen_field_iterator *iter, 962 struct gen_group *group, 963 const uint32_t *p, int p_bit, 964 bool print_colors) 965 { 966 memset(iter, 0, sizeof(*iter)); 967 968 iter->group = group; 969 if (group->fields) 970 iter->field = group->fields; 971 else 972 iter->field = group->next->fields; 973 iter->p = p; 974 iter->p_bit = p_bit; 975 iter->p_end = &p[gen_group_get_length(iter->group, iter->p)]; 976 iter->print_colors = print_colors; 977 978 iter_decode_field(iter); 979 } 980 981 bool 982 gen_field_iterator_next(struct gen_field_iterator *iter) 983 { 984 if (!iter_advance_field(iter)) 985 return false; 986 987 iter_decode_field(iter); 988 989 return true; 990 } 991 992 static void 993 print_dword_header(FILE *outfile, 994 struct gen_field_iterator *iter, 995 uint64_t offset, uint32_t dword) 996 { 997 fprintf(outfile, "0x%08"PRIx64": 0x%08x : Dword %d\n", 998 offset + 4 * dword, iter->p[dword], dword); 999 } 1000 1001 bool 1002 gen_field_is_header(struct gen_field *field) 1003 { 1004 uint32_t bits; 1005 1006 if (field->start >= 32) 1007 return false; 1008 1009 bits = (1U << (field->end - field->start + 1)) - 1; 1010 bits <<= field->start; 1011 1012 return (field->parent->opcode_mask & bits) != 0; 1013 } 1014 1015 void 1016 gen_print_group(FILE *outfile, struct gen_group *group, uint64_t offset, 1017 const uint32_t *p, int p_bit, bool color) 1018 { 1019 struct gen_field_iterator iter; 1020 int last_dword = -1; 1021 1022 gen_field_iterator_init(&iter, group, p, p_bit, color); 1023 do { 1024 int iter_dword = iter.bit / 32; 1025 if (last_dword != iter_dword) { 1026 for (int i = last_dword + 1; i <= iter_dword; i++) 1027 print_dword_header(outfile, &iter, offset, i); 1028 last_dword = iter_dword; 1029 } 1030 if (!gen_field_is_header(iter.field)) { 1031 fprintf(outfile, " %s: %s\n", iter.name, iter.value); 1032 if (iter.struct_desc) { 1033 uint64_t struct_offset = offset + 4 * iter_dword; 1034 gen_print_group(outfile, iter.struct_desc, struct_offset, 1035 &p[iter_dword], iter.bit % 32, color); 1036 } 1037 } 1038 } while (gen_field_iterator_next(&iter)); 1039 } 1040
