src/intel/tools/aubinator_error_decode.c

   1 /*
   2  * Copyright © 2007-2017 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
  25 #include <stdbool.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <stdarg.h>
  29 #include <string.h>
  30 #include <unistd.h>
  31 #include <inttypes.h>
  32 #include <errno.h>
  33 #include <sys/stat.h>
  34 #include <sys/types.h>
  35 #include <sys/wait.h>
  36 #include <err.h>
  37 #include <assert.h>
  38 #include <getopt.h>
  39 #include <zlib.h>
  40
  41 #include "common/gen_decoder.h"
  42 #include "util/macros.h"
  43 #include "gen_disasm.h"
  44
  45 #define CSI "\e["
  46 #define BLUE_HEADER  CSI "0;44m"
  47 #define GREEN_HEADER CSI "1;42m"
  48 #define NORMAL       CSI "0m"
  49
  50 #define MIN(a, b) ((a) < (b) ? (a) : (b))
  51
  52 /* options */
  53
  54 static bool option_full_decode = true;
  55 static bool option_print_offsets = true;
  56 static enum { COLOR_AUTO, COLOR_ALWAYS, COLOR_NEVER } option_color;
  57 static char *xml_path = NULL;
  58
  59 static uint32_t
  60 print_head(unsigned int reg)
  61 {
  62    printf("    head = 0x%08x, wraps = %d\n", reg & (0x7ffff<<2), reg >> 21);
  63    return reg & (0x7ffff<<2);
  64 }
  65
  66 static void
  67 print_register(struct gen_spec *spec, const char *name, uint32_t reg)
  68 {
  69    struct gen_group *reg_spec = gen_spec_find_register_by_name(spec, name);
  70
  71    if (reg_spec)
  72       gen_print_group(stdout, reg_spec, 0, &reg, option_color == COLOR_ALWAYS);
  73 }
  74
  75 struct ring_register_mapping {
  76    const char *ring_name;
  77    const char *register_name;
  78 };
  79
  80 static const struct ring_register_mapping acthd_registers[] = {
  81    { "blt", "BCS_ACTHD_UDW" },
  82    { "bsd", "VCS_ACTHD_UDW" },
  83    { "bsd2", "VCS2_ACTHD_UDW" },
  84    { "render", "ACTHD_UDW" },
  85    { "vebox", "VECS_ACTHD_UDW" },
  86 };
  87
  88 static const struct ring_register_mapping ctl_registers[] = {
  89    { "blt", "BCS_RING_BUFFER_CTL" },
  90    { "bsd", "VCS_RING_BUFFER_CTL" },
  91    { "bsd2", "VCS2_RING_BUFFER_CTL" },
  92    { "render", "RCS_RING_BUFFER_CTL" },
  93    { "vebox", "VECS_RING_BUFFER_CTL" },
  94 };
  95
  96 static const struct ring_register_mapping fault_registers[] = {
  97    { "blt", "BCS_FAULT_REG" },
  98    { "bsd", "VCS_FAULT_REG" },
  99    { "render", "RCS_FAULT_REG" },
 100    { "vebox", "VECS_FAULT_REG" },
 101 };
 102
 103 static const char *
 104 register_name_from_ring(const struct ring_register_mapping *mapping,
 105                         unsigned nb_mapping,
 106                         const char *ring_name)
 107 {
 108    for (unsigned i = 0; i < nb_mapping; i++) {
 109       if (strcmp(mapping[i].ring_name, ring_name) == 0)
 110          return mapping[i].register_name;
 111    }
 112    return NULL;
 113 }
 114
 115 static const char *
 116 instdone_register_for_ring(const struct gen_device_info *devinfo,
 117                            const char *ring_name)
 118 {
 119    if (strcmp(ring_name, "blt") == 0)
 120       return "BCS_INSTDONE";
 121    else if (strcmp(ring_name, "vebox") == 0)
 122       return "VECS_INSTDONE";
 123    else if (strcmp(ring_name, "bsd") == 0)
 124       return "VCS_INSTDONE";
 125    else if (strcmp(ring_name, "render") == 0) {
 126       if (devinfo->gen == 6)
 127          return "INSTDONE_2";
 128       return "INSTDONE_1";
 129    }
 130
 131    return NULL;
 132 }
 133
 134 static void
 135 print_pgtbl_err(unsigned int reg, struct gen_device_info *devinfo)
 136 {
 137    if (reg & (1 << 26))
 138       printf("    Invalid Sampler Cache GTT entry\n");
 139    if (reg & (1 << 24))
 140       printf("    Invalid Render Cache GTT entry\n");
 141    if (reg & (1 << 23))
 142       printf("    Invalid Instruction/State Cache GTT entry\n");
 143    if (reg & (1 << 22))
 144       printf("    There is no ROC, this cannot occur!\n");
 145    if (reg & (1 << 21))
 146       printf("    Invalid GTT entry during Vertex Fetch\n");
 147    if (reg & (1 << 20))
 148       printf("    Invalid GTT entry during Command Fetch\n");
 149    if (reg & (1 << 19))
 150       printf("    Invalid GTT entry during CS\n");
 151    if (reg & (1 << 18))
 152       printf("    Invalid GTT entry during Cursor Fetch\n");
 153    if (reg & (1 << 17))
 154       printf("    Invalid GTT entry during Overlay Fetch\n");
 155    if (reg & (1 << 8))
 156       printf("    Invalid GTT entry during Display B Fetch\n");
 157    if (reg & (1 << 4))
 158       printf("    Invalid GTT entry during Display A Fetch\n");
 159    if (reg & (1 << 1))
 160       printf("    Valid PTE references illegal memory\n");
 161    if (reg & (1 << 0))
 162       printf("    Invalid GTT entry during fetch for host\n");
 163 }
 164
 165 static void
 166 print_snb_fence(struct gen_device_info *devinfo, uint64_t fence)
 167 {
 168    printf("    %svalid, %c-tiled, pitch: %i, start: 0x%08x, size: %u\n",
 169           fence & 1 ? "" : "in",
 170           fence & (1<<1) ? 'y' : 'x',
 171           (int)(((fence>>32)&0xfff)+1)*128,
 172           (uint32_t)fence & 0xfffff000,
 173           (uint32_t)(((fence>>32)&0xfffff000) - (fence&0xfffff000) + 4096));
 174 }
 175
 176 static void
 177 print_i965_fence(struct gen_device_info *devinfo, uint64_t fence)
 178 {
 179    printf("    %svalid, %c-tiled, pitch: %i, start: 0x%08x, size: %u\n",
 180           fence & 1 ? "" : "in",
 181           fence & (1<<1) ? 'y' : 'x',
 182           (int)(((fence>>2)&0x1ff)+1)*128,
 183           (uint32_t)fence & 0xfffff000,
 184           (uint32_t)(((fence>>32)&0xfffff000) - (fence&0xfffff000) + 4096));
 185 }
 186
 187 static void
 188 print_fence(struct gen_device_info *devinfo, uint64_t fence)
 189 {
 190    if (devinfo->gen == 6 || devinfo->gen == 7) {
 191       return print_snb_fence(devinfo, fence);
 192    } else if (devinfo->gen == 4 || devinfo->gen == 5) {
 193       return print_i965_fence(devinfo, fence);
 194    }
 195 }
 196
 197 static void
 198 print_fault_data(struct gen_device_info *devinfo, uint32_t data1, uint32_t data0)
 199 {
 200    uint64_t address;
 201
 202    if (devinfo->gen < 8)
 203       return;
 204
 205    address = ((uint64_t)(data0) << 12) | ((uint64_t)data1 & 0xf) << 44;
 206    printf("    Address 0x%016" PRIx64 " %s\n", address,
 207           data1 & (1 << 4) ? "GGTT" : "PPGTT");
 208 }
 209
 210 #define CSI "\e["
 211 #define NORMAL       CSI "0m"
 212
 213 struct section {
 214    uint64_t gtt_offset;
 215    char *ring_name;
 216    const char *buffer_name;
 217    uint32_t *data;
 218    int count;
 219 };
 220
 221 #define MAX_SECTIONS 30
 222 static struct section sections[MAX_SECTIONS];
 223
 224 static void
 225 disassemble_program(struct gen_disasm *disasm, const char *type,
 226                     const struct section *instruction_section,
 227                     uint64_t ksp)
 228 {
 229    if (!instruction_section)
 230       return;
 231
 232    printf("\nReferenced %s:\n", type);
 233    gen_disasm_disassemble(disasm, instruction_section->data, ksp, stdout);
 234 }
 235
 236 static void
 237 decode(struct gen_spec *spec, struct gen_disasm *disasm,
 238        const struct section *section)
 239 {
 240    uint64_t gtt_offset = section->gtt_offset;
 241    uint32_t *data = section->data;
 242    uint32_t *p, *end = (data + section->count);
 243    int length;
 244    struct gen_group *inst;
 245    const struct section *current_instruction_buffer = NULL;
 246
 247    for (p = data; p < end; p += length) {
 248       const char *color = option_full_decode ? BLUE_HEADER : NORMAL,
 249          *reset_color = NORMAL;
 250       uint64_t offset = gtt_offset + 4 * (p - data);
 251
 252       inst = gen_spec_find_instruction(spec, p);
 253       length = gen_group_get_length(inst, p);
 254       assert(inst == NULL || length > 0);
 255       length = MAX2(1, length);
 256       if (inst == NULL) {
 257          printf("unknown instruction %08x\n", p[0]);
 258          continue;
 259       }
 260       if (option_color == COLOR_NEVER) {
 261          color = "";
 262          reset_color = "";
 263       }
 264
 265       printf("%s0x%08"PRIx64":  0x%08x:  %-80s%s\n",
 266              color, offset, p[0], gen_group_get_name(inst), reset_color);
 267
 268       gen_print_group(stdout, inst, offset, p,
 269                       option_color == COLOR_ALWAYS);
 270
 271       if (strcmp(inst->name, "MI_BATCH_BUFFER_END") == 0)
 272          break;
 273
 274       if (strcmp(inst->name, "STATE_BASE_ADDRESS") == 0) {
 275          struct gen_field_iterator iter;
 276          gen_field_iterator_init(&iter, inst, p, false);
 277
 278          while (gen_field_iterator_next(&iter)) {
 279             if (strcmp(iter.name, "Instruction Base Address") == 0) {
 280                uint64_t instr_base_address = strtol(iter.value, NULL, 16);
 281                current_instruction_buffer = NULL;
 282                for (int s = 0; s < MAX_SECTIONS; s++) {
 283                   if (sections[s].gtt_offset == instr_base_address) {
 284                      current_instruction_buffer = &sections[s];
 285                   }
 286                }
 287             }
 288          }
 289       } else if (strcmp(inst->name,   "WM_STATE") == 0 ||
 290                  strcmp(inst->name, "3DSTATE_PS") == 0 ||
 291                  strcmp(inst->name, "3DSTATE_WM") == 0) {
 292          struct gen_field_iterator iter;
 293          gen_field_iterator_init(&iter, inst, p, false);
 294          uint64_t ksp[3] = {0, 0, 0};
 295          bool enabled[3] = {false, false, false};
 296
 297          while (gen_field_iterator_next(&iter)) {
 298             if (strncmp(iter.name, "Kernel Start Pointer ",
 299                         strlen("Kernel Start Pointer ")) == 0) {
 300                int idx = iter.name[strlen("Kernel Start Pointer ")] - '0';
 301                ksp[idx] = strtol(iter.value, NULL, 16);
 302             } else if (strcmp(iter.name, "8 Pixel Dispatch Enable") == 0) {
 303                enabled[0] = strcmp(iter.value, "true") == 0;
 304             } else if (strcmp(iter.name, "16 Pixel Dispatch Enable") == 0) {
 305                enabled[1] = strcmp(iter.value, "true") == 0;
 306             } else if (strcmp(iter.name, "32 Pixel Dispatch Enable") == 0) {
 307                enabled[2] = strcmp(iter.value, "true") == 0;
 308             }
 309          }
 310
 311          /* Reorder KSPs to be [8, 16, 32] instead of the hardware order. */
 312          if (enabled[0] + enabled[1] + enabled[2] == 1) {
 313             if (enabled[1]) {
 314                ksp[1] = ksp[0];
 315                ksp[0] = 0;
 316             } else if (enabled[2]) {
 317                ksp[2] = ksp[0];
 318                ksp[0] = 0;
 319             }
 320          } else {
 321             uint64_t tmp = ksp[1];
 322             ksp[1] = ksp[2];
 323             ksp[2] = tmp;
 324          }
 325
 326          /* FINISHME: Broken for multi-program WM_STATE,
 327           * which Mesa does not use
 328           */
 329          if (enabled[0]) {
 330             disassemble_program(disasm, "SIMD8 fragment shader",
 331                                 current_instruction_buffer, ksp[0]);
 332          }
 333          if (enabled[1]) {
 334             disassemble_program(disasm, "SIMD16 fragment shader",
 335                                 current_instruction_buffer, ksp[1]);
 336          }
 337          if (enabled[2]) {
 338             disassemble_program(disasm, "SIMD32 fragment shader",
 339                                 current_instruction_buffer, ksp[2]);
 340          }
 341          printf("\n");
 342       } else if (strcmp(inst->name,   "VS_STATE") == 0 ||
 343                  strcmp(inst->name,   "GS_STATE") == 0 ||
 344                  strcmp(inst->name,   "SF_STATE") == 0 ||
 345                  strcmp(inst->name, "CLIP_STATE") == 0 ||
 346                  strcmp(inst->name, "3DSTATE_DS") == 0 ||
 347                  strcmp(inst->name, "3DSTATE_HS") == 0 ||
 348                  strcmp(inst->name, "3DSTATE_GS") == 0 ||
 349                  strcmp(inst->name, "3DSTATE_VS") == 0) {
 350          struct gen_field_iterator iter;
 351          gen_field_iterator_init(&iter, inst, p, false);
 352          uint64_t ksp = 0;
 353          bool is_simd8 = false; /* vertex shaders on Gen8+ only */
 354          bool is_enabled = true;
 355
 356          while (gen_field_iterator_next(&iter)) {
 357             if (strcmp(iter.name, "Kernel Start Pointer") == 0) {
 358                ksp = strtol(iter.value, NULL, 16);
 359             } else if (strcmp(iter.name, "SIMD8 Dispatch Enable") == 0) {
 360                is_simd8 = strcmp(iter.value, "true") == 0;
 361             } else if (strcmp(iter.name, "Dispatch Enable") == 0) {
 362                is_simd8 = strcmp(iter.value, "SIMD8") == 0;
 363             } else if (strcmp(iter.name, "Enable") == 0) {
 364                is_enabled = strcmp(iter.value, "true") == 0;
 365             }
 366          }
 367
 368          const char *type =
 369             strcmp(inst->name,   "VS_STATE") == 0 ? "vertex shader" :
 370             strcmp(inst->name,   "GS_STATE") == 0 ? "geometry shader" :
 371             strcmp(inst->name,   "SF_STATE") == 0 ? "strips and fans shader" :
 372             strcmp(inst->name, "CLIP_STATE") == 0 ? "clip shader" :
 373             strcmp(inst->name, "3DSTATE_DS") == 0 ? "tessellation control shader" :
 374             strcmp(inst->name, "3DSTATE_HS") == 0 ? "tessellation evaluation shader" :
 375             strcmp(inst->name, "3DSTATE_VS") == 0 ? (is_simd8 ? "SIMD8 vertex shader" : "vec4 vertex shader") :
 376             strcmp(inst->name, "3DSTATE_GS") == 0 ? (is_simd8 ? "SIMD8 geometry shader" : "vec4 geometry shader") :
 377             NULL;
 378
 379          if (is_enabled) {
 380             disassemble_program(disasm, type, current_instruction_buffer, ksp);
 381             printf("\n");
 382          }
 383       }
 384    }
 385 }
 386
 387 static int zlib_inflate(uint32_t **ptr, int len)
 388 {
 389    struct z_stream_s zstream;
 390    void *out;
 391    const uint32_t out_size = 128*4096;  /* approximate obj size */
 392
 393    memset(&zstream, 0, sizeof(zstream));
 394
 395    zstream.next_in = (unsigned char *)*ptr;
 396    zstream.avail_in = 4*len;
 397
 398    if (inflateInit(&zstream) != Z_OK)
 399       return 0;
 400
 401    out = malloc(out_size);
 402    zstream.next_out = out;
 403    zstream.avail_out = out_size;
 404
 405    do {
 406       switch (inflate(&zstream, Z_SYNC_FLUSH)) {
 407       case Z_STREAM_END:
 408          goto end;
 409       case Z_OK:
 410          break;
 411       default:
 412          inflateEnd(&zstream);
 413          return 0;
 414       }
 415
 416       if (zstream.avail_out)
 417          break;
 418
 419       out = realloc(out, 2*zstream.total_out);
 420       if (out == NULL) {
 421          inflateEnd(&zstream);
 422          return 0;
 423       }
 424
 425       zstream.next_out = (unsigned char *)out + zstream.total_out;
 426       zstream.avail_out = zstream.total_out;
 427    } while (1);
 428  end:
 429    inflateEnd(&zstream);
 430    free(*ptr);
 431    *ptr = out;
 432    return zstream.total_out / 4;
 433 }
 434
 435 static int ascii85_decode(const char *in, uint32_t **out, bool inflate)
 436 {
 437    int len = 0, size = 1024;
 438
 439    *out = realloc(*out, sizeof(uint32_t)*size);
 440    if (*out == NULL)
 441       return 0;
 442
 443    while (*in >= '!' && *in <= 'z') {
 444       uint32_t v = 0;
 445
 446       if (len == size) {
 447          size *= 2;
 448          *out = realloc(*out, sizeof(uint32_t)*size);
 449          if (*out == NULL)
 450             return 0;
 451       }
 452
 453       if (*in == 'z') {
 454          in++;
 455       } else {
 456          v += in[0] - 33; v *= 85;
 457          v += in[1] - 33; v *= 85;
 458          v += in[2] - 33; v *= 85;
 459          v += in[3] - 33; v *= 85;
 460          v += in[4] - 33;
 461          in += 5;
 462       }
 463       (*out)[len++] = v;
 464    }
 465
 466    if (!inflate)
 467       return len;
 468
 469    return zlib_inflate(out, len);
 470 }
 471
 472 static void
 473 read_data_file(FILE *file)
 474 {
 475    struct gen_spec *spec = NULL;
 476    long long unsigned fence;
 477    int matched;
 478    char *line = NULL;
 479    size_t line_size;
 480    uint32_t offset, value;
 481    char *ring_name = NULL;
 482    struct gen_device_info devinfo;
 483    struct gen_disasm *disasm = NULL;
 484    int sect_num = 0;
 485
 486    while (getline(&line, &line_size, file) > 0) {
 487       char *new_ring_name = NULL;
 488       char *dashes;
 489
 490       if (sscanf(line, "%m[^ ] command stream\n", &new_ring_name) > 0) {
 491          free(ring_name);
 492          ring_name = new_ring_name;
 493       }
 494
 495       if (line[0] == ':' || line[0] == '~') {
 496          uint32_t *data = NULL;
 497          int count = ascii85_decode(line+1, &data, line[0] == ':');
 498          if (count == 0) {
 499             fprintf(stderr, "ASCII85 decode failed.\n");
 500             exit(EXIT_FAILURE);
 501          }
 502          sections[sect_num].data = data;
 503          sections[sect_num].count = count;
 504          sect_num++;
 505          continue;
 506       }
 507
 508       dashes = strstr(line, "---");
 509       if (dashes) {
 510          const struct {
 511             const char *match;
 512             const char *name;
 513          } buffers[] = {
 514             { "ringbuffer", "ring buffer" },
 515             { "gtt_offset", "batch buffer" },
 516             { "hw context", "HW Context" },
 517             { "hw status", "HW status" },
 518             { "wa context", "WA context" },
 519             { "wa batchbuffer", "WA batch" },
 520             { "user", "user" },
 521             { "semaphores", "semaphores", },
 522             { "guc log buffer", "GuC log", },
 523             { NULL, "unknown" },
 524          }, *b;
 525
 526          free(ring_name);
 527          ring_name = malloc(dashes - line);
 528          strncpy(ring_name, line, dashes - line);
 529          ring_name[dashes - line - 1] = '\0';
 530
 531          dashes += 4;
 532          for (b = buffers; b->match; b++) {
 533             if (strncasecmp(dashes, b->match, strlen(b->match)) == 0)
 534                break;
 535          }
 536
 537          sections[sect_num].buffer_name = b->name;
 538          sections[sect_num].ring_name = strdup(ring_name);
 539
 540          uint32_t hi, lo;
 541          dashes = strchr(dashes, '=');
 542          if (dashes && sscanf(dashes, "= 0x%08x %08x\n", &hi, &lo))
 543             sections[sect_num].gtt_offset = ((uint64_t) hi) << 32 | lo;
 544
 545          continue;
 546       }
 547
 548       matched = sscanf(line, "%08x : %08x", &offset, &value);
 549       if (matched != 2) {
 550          uint32_t reg, reg2;
 551
 552          /* display reg section is after the ringbuffers, don't mix them */
 553          printf("%s", line);
 554
 555          matched = sscanf(line, "PCI ID: 0x%04x\n", &reg);
 556          if (matched == 0)
 557             matched = sscanf(line, " PCI ID: 0x%04x\n", &reg);
 558          if (matched == 0) {
 559             const char *pci_id_start = strstr(line, "PCI ID");
 560             if (pci_id_start)
 561                matched = sscanf(pci_id_start, "PCI ID: 0x%04x\n", &reg);
 562          }
 563          if (matched == 1) {
 564             if (!gen_get_device_info(reg, &devinfo)) {
 565                printf("Unable to identify devid=%x\n", reg);
 566                exit(EXIT_FAILURE);
 567             }
 568
 569             disasm = gen_disasm_create(reg);
 570
 571             printf("Detected GEN%i chipset\n", devinfo.gen);
 572
 573             if (xml_path == NULL)
 574                spec = gen_spec_load(&devinfo);
 575             else
 576                spec = gen_spec_load_from_path(&devinfo, xml_path);
 577          }
 578
 579          matched = sscanf(line, "  CTL: 0x%08x\n", &reg);
 580          if (matched == 1) {
 581             print_register(spec,
 582                            register_name_from_ring(ctl_registers,
 583                                                    ARRAY_SIZE(ctl_registers),
 584                                                    ring_name), reg);
 585          }
 586
 587          matched = sscanf(line, "  HEAD: 0x%08x\n", &reg);
 588          if (matched == 1)
 589             print_head(reg);
 590
 591          matched = sscanf(line, "  ACTHD: 0x%08x\n", &reg);
 592          if (matched == 1) {
 593             print_register(spec,
 594                            register_name_from_ring(acthd_registers,
 595                                                    ARRAY_SIZE(acthd_registers),
 596                                                    ring_name), reg);
 597          }
 598
 599          matched = sscanf(line, "  PGTBL_ER: 0x%08x\n", &reg);
 600          if (matched == 1 && reg)
 601             print_pgtbl_err(reg, &devinfo);
 602
 603          matched = sscanf(line, "  ERROR: 0x%08x\n", &reg);
 604          if (matched == 1 && reg) {
 605             print_register(spec, "GFX_ARB_ERROR_RPT", reg);
 606          }
 607
 608          matched = sscanf(line, "  INSTDONE: 0x%08x\n", &reg);
 609          if (matched == 1) {
 610             const char *reg_name =
 611                instdone_register_for_ring(&devinfo, ring_name);
 612             if (reg_name)
 613                print_register(spec, reg_name, reg);
 614          }
 615
 616          matched = sscanf(line, "  INSTDONE1: 0x%08x\n", &reg);
 617          if (matched == 1)
 618             print_register(spec, "INSTDONE_1", reg);
 619
 620          matched = sscanf(line, "  fence[%i] = %Lx\n", &reg, &fence);
 621          if (matched == 2)
 622             print_fence(&devinfo, fence);
 623
 624          matched = sscanf(line, "  FAULT_REG: 0x%08x\n", &reg);
 625          if (matched == 1 && reg) {
 626             const char *reg_name =
 627                register_name_from_ring(fault_registers,
 628                                        ARRAY_SIZE(fault_registers),
 629                                        ring_name);
 630             if (reg_name == NULL)
 631                reg_name = "FAULT_REG";
 632             print_register(spec, reg_name, reg);
 633          }
 634
 635          matched = sscanf(line, "  FAULT_TLB_DATA: 0x%08x 0x%08x\n", &reg, &reg2);
 636          if (matched == 2)
 637             print_fault_data(&devinfo, reg, reg2);
 638
 639          continue;
 640       }
 641    }
 642
 643    free(line);
 644    free(ring_name);
 645
 646    for (int s = 0; s < sect_num; s++) {
 647       printf("--- %s (%s) at 0x%08x %08x\n",
 648              sections[s].buffer_name, sections[s].ring_name,
 649              (unsigned) (sections[s].gtt_offset >> 32),
 650              (unsigned) sections[s].gtt_offset);
 651
 652       if (strcmp(sections[s].buffer_name, "batch buffer") == 0 ||
 653           strcmp(sections[s].buffer_name, "ring buffer") == 0 ||
 654           strcmp(sections[s].buffer_name, "HW Context") == 0) {
 655          decode(spec, disasm, &sections[s]);
 656       }
 657
 658       free(sections[s].ring_name);
 659       free(sections[s].data);
 660    }
 661
 662    gen_disasm_destroy(disasm);
 663 }
 664
 665 static void
 666 setup_pager(void)
 667 {
 668    int fds[2];
 669    pid_t pid;
 670
 671    if (!isatty(1))
 672       return;
 673
 674    if (pipe(fds) == -1)
 675       return;
 676
 677    pid = fork();
 678    if (pid == -1)
 679       return;
 680
 681    if (pid == 0) {
 682       close(fds[1]);
 683       dup2(fds[0], 0);
 684       execlp("less", "less", "-FRSi", NULL);
 685    }
 686
 687    close(fds[0]);
 688    dup2(fds[1], 1);
 689    close(fds[1]);
 690 }
 691
 692 static void
 693 print_help(const char *progname, FILE *file)
 694 {
 695    fprintf(file,
 696            "Usage: %s [OPTION]... [FILE]\n"
 697            "Parse an Intel GPU i915_error_state.\n"
 698            "With no FILE, debugfs-dri-directory is probed for in /debug and \n"
 699            "/sys/kernel/debug.  Otherwise, it may be specified. If a file is given,\n"
 700            "it is parsed as an GPU dump in the format of /debug/dri/0/i915_error_state.\n\n"
 701            "      --help          display this help and exit\n"
 702            "      --headers       decode only command headers\n"
 703            "      --color[=WHEN]  colorize the output; WHEN can be 'auto' (default\n"
 704            "                        if omitted), 'always', or 'never'\n"
 705            "      --no-pager      don't launch pager\n"
 706            "      --no-offsets    don't print instruction offsets\n"
 707            "      --xml=DIR       load hardware xml description from directory DIR\n",
 708            progname);
 709 }
 710
 711 int
 712 main(int argc, char *argv[])
 713 {
 714    FILE *file;
 715    const char *path;
 716    struct stat st;
 717    int c, i, error;
 718    bool help = false, pager = true;
 719    const struct option aubinator_opts[] = {
 720       { "help",       no_argument,       (int *) &help,                 true },
 721       { "no-pager",   no_argument,       (int *) &pager,                false },
 722       { "no-offsets", no_argument,       (int *) &option_print_offsets, false },
 723       { "headers",    no_argument,       (int *) &option_full_decode,   false },
 724       { "color",      required_argument, NULL,                          'c' },
 725       { "xml",        required_argument, NULL,                          'x' },
 726       { NULL,         0,                 NULL,                          0 }
 727    };
 728
 729    i = 0;
 730    while ((c = getopt_long(argc, argv, "", aubinator_opts, &i)) != -1) {
 731       switch (c) {
 732       case 'c':
 733          if (optarg == NULL || strcmp(optarg, "always") == 0)
 734             option_color = COLOR_ALWAYS;
 735          else if (strcmp(optarg, "never") == 0)
 736             option_color = COLOR_NEVER;
 737          else if (strcmp(optarg, "auto") == 0)
 738             option_color = COLOR_AUTO;
 739          else {
 740             fprintf(stderr, "invalid value for --color: %s", optarg);
 741             exit(EXIT_FAILURE);
 742          }
 743          break;
 744       case 'x':
 745          xml_path = strdup(optarg);
 746          break;
 747       default:
 748          break;
 749       }
 750    }
 751
 752    if (help || argc == 1) {
 753       print_help(argv[0], stderr);
 754       exit(EXIT_SUCCESS);
 755    }
 756
 757    if (optind >= argc) {
 758       if (isatty(0)) {
 759          path = "/sys/class/drm/card0/error";
 760          error = stat(path, &st);
 761          if (error != 0) {
 762             path = "/debug/dri";
 763             error = stat(path, &st);
 764          }
 765          if (error != 0) {
 766             path = "/sys/kernel/debug/dri";
 767             error = stat(path, &st);
 768          }
 769          if (error != 0) {
 770             errx(1,
 771                  "Couldn't find i915 debugfs directory.\n\n"
 772                  "Is debugfs mounted? You might try mounting it with a command such as:\n\n"
 773                  "\tsudo mount -t debugfs debugfs /sys/kernel/debug\n");
 774          }
 775       } else {
 776          read_data_file(stdin);
 777          exit(EXIT_SUCCESS);
 778       }
 779    } else {
 780       path = argv[optind];
 781       error = stat(path, &st);
 782       if (error != 0) {
 783          fprintf(stderr, "Error opening %s: %s\n",
 784                  path, strerror(errno));
 785          exit(EXIT_FAILURE);
 786       }
 787    }
 788
 789    if (option_color == COLOR_AUTO)
 790       option_color = isatty(1) ? COLOR_ALWAYS : COLOR_NEVER;
 791
 792    if (isatty(1) && pager)
 793       setup_pager();
 794
 795    if (S_ISDIR(st.st_mode)) {
 796       int ret;
 797       char *filename;
 798
 799       ret = asprintf(&filename, "%s/i915_error_state", path);
 800       assert(ret > 0);
 801       file = fopen(filename, "r");
 802       if (!file) {
 803          int minor;
 804          free(filename);
 805          for (minor = 0; minor < 64; minor++) {
 806             ret = asprintf(&filename, "%s/%d/i915_error_state", path, minor);
 807             assert(ret > 0);
 808
 809             file = fopen(filename, "r");
 810             if (file)
 811                break;
 812
 813             free(filename);
 814          }
 815       }
 816       if (!file) {
 817          fprintf(stderr, "Failed to find i915_error_state beneath %s\n",
 818                  path);
 819          return EXIT_FAILURE;
 820       }
 821    } else {
 822       file = fopen(path, "r");
 823       if (!file) {
 824          fprintf(stderr, "Failed to open %s: %s\n",
 825                  path, strerror(errno));
 826          return EXIT_FAILURE;
 827       }
 828    }
 829
 830    read_data_file(file);
 831    fclose(file);
 832
 833    /* close the stdout which is opened to write the output */
 834    fflush(stdout);
 835    close(1);
 836    wait(NULL);
 837
 838    if (xml_path)
 839       free(xml_path);
 840
 841    return EXIT_SUCCESS;
 842 }
 843
 844 /* vim: set ts=8 sw=8 tw=0 cino=:0,(0 noet :*/