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 program {
 214    const char *type;
 215    const char *command;
 216    uint64_t command_offset;
 217    uint64_t instruction_base_address;
 218    uint64_t ksp;
 219 };
 220
 221 #define MAX_NUM_PROGRAMS 4096
 222 static struct program programs[MAX_NUM_PROGRAMS];
 223 static int idx_program = 0, num_programs = 0;
 224
 225 static int next_program(void)
 226 {
 227    int ret = idx_program;
 228    idx_program = (idx_program + 1) % MAX_NUM_PROGRAMS;
 229    num_programs = MIN(num_programs + 1, MAX_NUM_PROGRAMS);
 230    return ret;
 231 }
 232
 233 static void decode(struct gen_spec *spec,
 234                    uint64_t gtt_offset,
 235                    uint32_t *data,
 236                    int count)
 237 {
 238    uint32_t *p, *end = (data + count);
 239    int length;
 240    struct gen_group *inst;
 241    uint64_t current_instruction_base_address = 0;
 242
 243    for (p = data; p < end; p += length) {
 244       const char *color = option_full_decode ? BLUE_HEADER : NORMAL,
 245          *reset_color = NORMAL;
 246       uint64_t offset = gtt_offset + 4 * (p - data);
 247
 248       inst = gen_spec_find_instruction(spec, p);
 249       length = gen_group_get_length(inst, p);
 250       assert(inst == NULL || length > 0);
 251       length = MAX2(1, length);
 252       if (inst == NULL) {
 253          printf("unknown instruction %08x\n", p[0]);
 254          continue;
 255       }
 256       if (option_color == COLOR_NEVER) {
 257          color = "";
 258          reset_color = "";
 259       }
 260
 261       printf("%s0x%08"PRIx64":  0x%08x:  %-80s%s\n",
 262              color, offset, p[0], gen_group_get_name(inst), reset_color);
 263
 264       gen_print_group(stdout, inst, offset, p,
 265                       option_color == COLOR_ALWAYS);
 266
 267       if (strcmp(inst->name, "MI_BATCH_BUFFER_END") == 0)
 268          break;
 269
 270       if (strcmp(inst->name, "STATE_BASE_ADDRESS") == 0) {
 271          struct gen_field_iterator iter;
 272          gen_field_iterator_init(&iter, inst, p, false);
 273
 274          while (gen_field_iterator_next(&iter)) {
 275             if (strcmp(iter.name, "Instruction Base Address") == 0) {
 276                current_instruction_base_address = strtol(iter.value, NULL, 16);
 277             }
 278          }
 279       } else if (strcmp(inst->name,   "WM_STATE") == 0 ||
 280                  strcmp(inst->name, "3DSTATE_PS") == 0 ||
 281                  strcmp(inst->name, "3DSTATE_WM") == 0) {
 282          struct gen_field_iterator iter;
 283          gen_field_iterator_init(&iter, inst, p, false);
 284          uint64_t ksp[3] = {0, 0, 0};
 285          bool enabled[3] = {false, false, false};
 286
 287          while (gen_field_iterator_next(&iter)) {
 288             if (strncmp(iter.name, "Kernel Start Pointer ",
 289                         strlen("Kernel Start Pointer ")) == 0) {
 290                int idx = iter.name[strlen("Kernel Start Pointer ")] - '0';
 291                ksp[idx] = strtol(iter.value, NULL, 16);
 292             } else if (strcmp(iter.name, "8 Pixel Dispatch Enable") == 0) {
 293                enabled[0] = strcmp(iter.value, "true") == 0;
 294             } else if (strcmp(iter.name, "16 Pixel Dispatch Enable") == 0) {
 295                enabled[1] = strcmp(iter.value, "true") == 0;
 296             } else if (strcmp(iter.name, "32 Pixel Dispatch Enable") == 0) {
 297                enabled[2] = strcmp(iter.value, "true") == 0;
 298             }
 299          }
 300
 301          /* FINISHME: Broken for multi-program WM_STATE,
 302           * which Mesa does not use
 303           */
 304          if (enabled[0] + enabled[1] + enabled[2] == 1) {
 305             const char *type = enabled[0] ? "SIMD8 fragment shader" :
 306                                enabled[1] ? "SIMD16 fragment shader" :
 307                                enabled[2] ? "SIMD32 fragment shader" : NULL;
 308
 309             programs[next_program()] = (struct program) {
 310                .type = type,
 311                .command = inst->name,
 312                .command_offset = offset,
 313                .instruction_base_address = current_instruction_base_address,
 314                .ksp = ksp[0],
 315             };
 316          } else {
 317             if (enabled[0]) /* SIMD8 */ {
 318                programs[next_program()] = (struct program) {
 319                   .type = "SIMD8 fragment shader",
 320                   .command = inst->name,
 321                   .command_offset = offset,
 322                   .instruction_base_address = current_instruction_base_address,
 323                   .ksp = ksp[0], /* SIMD8 shader is specified by ksp[0] */
 324                };
 325             }
 326             if (enabled[1]) /* SIMD16 */ {
 327                programs[next_program()] = (struct program) {
 328                   .type = "SIMD16 fragment shader",
 329                   .command = inst->name,
 330                   .command_offset = offset,
 331                   .instruction_base_address = current_instruction_base_address,
 332                   .ksp = ksp[2], /* SIMD16 shader is specified by ksp[2] */
 333                };
 334             }
 335             if (enabled[2]) /* SIMD32 */ {
 336                programs[next_program()] = (struct program) {
 337                   .type = "SIMD32 fragment shader",
 338                   .command = inst->name,
 339                   .command_offset = offset,
 340                   .instruction_base_address = current_instruction_base_address,
 341                   .ksp = ksp[1], /* SIMD32 shader is specified by ksp[1] */
 342                };
 343             }
 344          }
 345       } else if (strcmp(inst->name,   "VS_STATE") == 0 ||
 346                  strcmp(inst->name,   "GS_STATE") == 0 ||
 347                  strcmp(inst->name,   "SF_STATE") == 0 ||
 348                  strcmp(inst->name, "CLIP_STATE") == 0 ||
 349                  strcmp(inst->name, "3DSTATE_DS") == 0 ||
 350                  strcmp(inst->name, "3DSTATE_HS") == 0 ||
 351                  strcmp(inst->name, "3DSTATE_GS") == 0 ||
 352                  strcmp(inst->name, "3DSTATE_VS") == 0) {
 353          struct gen_field_iterator iter;
 354          gen_field_iterator_init(&iter, inst, p, false);
 355          uint64_t ksp = 0;
 356          bool is_simd8 = false; /* vertex shaders on Gen8+ only */
 357          bool is_enabled = true;
 358
 359          while (gen_field_iterator_next(&iter)) {
 360             if (strcmp(iter.name, "Kernel Start Pointer") == 0) {
 361                ksp = strtol(iter.value, NULL, 16);
 362             } else if (strcmp(iter.name, "SIMD8 Dispatch Enable") == 0) {
 363                is_simd8 = strcmp(iter.value, "true") == 0;
 364             } else if (strcmp(iter.name, "Dispatch Enable") == 0) {
 365                is_simd8 = strcmp(iter.value, "SIMD8") == 0;
 366             } else if (strcmp(iter.name, "Enable") == 0) {
 367                is_enabled = strcmp(iter.value, "true") == 0;
 368             }
 369          }
 370
 371          const char *type =
 372             strcmp(inst->name,   "VS_STATE") == 0 ? "vertex shader" :
 373             strcmp(inst->name,   "GS_STATE") == 0 ? "geometry shader" :
 374             strcmp(inst->name,   "SF_STATE") == 0 ? "strips and fans shader" :
 375             strcmp(inst->name, "CLIP_STATE") == 0 ? "clip shader" :
 376             strcmp(inst->name, "3DSTATE_DS") == 0 ? "tessellation control shader" :
 377             strcmp(inst->name, "3DSTATE_HS") == 0 ? "tessellation evaluation shader" :
 378             strcmp(inst->name, "3DSTATE_VS") == 0 ? (is_simd8 ? "SIMD8 vertex shader" : "vec4 vertex shader") :
 379             strcmp(inst->name, "3DSTATE_GS") == 0 ? (is_simd8 ? "SIMD8 geometry shader" : "vec4 geometry shader") :
 380             NULL;
 381
 382          if (is_enabled) {
 383             programs[next_program()] = (struct program) {
 384                .type = type,
 385                .command = inst->name,
 386                .command_offset = offset,
 387                .instruction_base_address = current_instruction_base_address,
 388                .ksp = ksp,
 389             };
 390          }
 391       }
 392    }
 393 }
 394
 395 static int zlib_inflate(uint32_t **ptr, int len)
 396 {
 397    struct z_stream_s zstream;
 398    void *out;
 399    const uint32_t out_size = 128*4096;  /* approximate obj size */
 400
 401    memset(&zstream, 0, sizeof(zstream));
 402
 403    zstream.next_in = (unsigned char *)*ptr;
 404    zstream.avail_in = 4*len;
 405
 406    if (inflateInit(&zstream) != Z_OK)
 407       return 0;
 408
 409    out = malloc(out_size);
 410    zstream.next_out = out;
 411    zstream.avail_out = out_size;
 412
 413    do {
 414       switch (inflate(&zstream, Z_SYNC_FLUSH)) {
 415       case Z_STREAM_END:
 416          goto end;
 417       case Z_OK:
 418          break;
 419       default:
 420          inflateEnd(&zstream);
 421          return 0;
 422       }
 423
 424       if (zstream.avail_out)
 425          break;
 426
 427       out = realloc(out, 2*zstream.total_out);
 428       if (out == NULL) {
 429          inflateEnd(&zstream);
 430          return 0;
 431       }
 432
 433       zstream.next_out = (unsigned char *)out + zstream.total_out;
 434       zstream.avail_out = zstream.total_out;
 435    } while (1);
 436  end:
 437    inflateEnd(&zstream);
 438    free(*ptr);
 439    *ptr = out;
 440    return zstream.total_out / 4;
 441 }
 442
 443 static int ascii85_decode(const char *in, uint32_t **out, bool inflate)
 444 {
 445    int len = 0, size = 1024;
 446
 447    *out = realloc(*out, sizeof(uint32_t)*size);
 448    if (*out == NULL)
 449       return 0;
 450
 451    while (*in >= '!' && *in <= 'z') {
 452       uint32_t v = 0;
 453
 454       if (len == size) {
 455          size *= 2;
 456          *out = realloc(*out, sizeof(uint32_t)*size);
 457          if (*out == NULL)
 458             return 0;
 459       }
 460
 461       if (*in == 'z') {
 462          in++;
 463       } else {
 464          v += in[0] - 33; v *= 85;
 465          v += in[1] - 33; v *= 85;
 466          v += in[2] - 33; v *= 85;
 467          v += in[3] - 33; v *= 85;
 468          v += in[4] - 33;
 469          in += 5;
 470       }
 471       (*out)[len++] = v;
 472    }
 473
 474    if (!inflate)
 475       return len;
 476
 477    return zlib_inflate(out, len);
 478 }
 479
 480 static void
 481 read_data_file(FILE *file)
 482 {
 483    struct gen_spec *spec = NULL;
 484    long long unsigned fence;
 485    int matched;
 486    char *line = NULL;
 487    size_t line_size;
 488    uint32_t offset, value;
 489    uint64_t gtt_offset = 0;
 490    const char *buffer_name = "batch buffer";
 491    char *ring_name = NULL;
 492    struct gen_device_info devinfo;
 493    struct gen_disasm *disasm = NULL;
 494
 495    while (getline(&line, &line_size, file) > 0) {
 496       char *new_ring_name = NULL;
 497       char *dashes;
 498
 499       if (sscanf(line, "%m[^ ] command stream\n", &new_ring_name) > 0) {
 500          free(ring_name);
 501          ring_name = new_ring_name;
 502       }
 503
 504       if (line[0] == ':' || line[0] == '~') {
 505          uint32_t *data = NULL;
 506          int count = ascii85_decode(line+1, &data, line[0] == ':');
 507          if (count == 0) {
 508             fprintf(stderr, "ASCII85 decode failed.\n");
 509             exit(EXIT_FAILURE);
 510          }
 511
 512          if (strcmp(buffer_name, "user") == 0) {
 513             printf("Disassembly of programs in instruction buffer at "
 514                    "0x%08"PRIx64":\n", gtt_offset);
 515             for (int i = 0; i < num_programs; i++) {
 516                int idx = (idx_program + i) % MAX_NUM_PROGRAMS;
 517                if (programs[idx].instruction_base_address == gtt_offset) {
 518                     printf("\n%s (specified by %s at batch offset "
 519                            "0x%08"PRIx64") at offset 0x%08"PRIx64"\n",
 520                            programs[idx].type,
 521                            programs[idx].command,
 522                            programs[idx].command_offset,
 523                            programs[idx].ksp);
 524                     gen_disasm_disassemble(disasm, data, programs[idx].ksp,
 525                                            stdout);
 526                }
 527             }
 528          } else if (strcmp(buffer_name, "batch buffer") == 0 ||
 529                     strcmp(buffer_name, "ring buffer") == 0 ||
 530                     strcmp(buffer_name, "HW Context") == 0) {
 531             decode(spec, gtt_offset, data, count);
 532          }
 533          free(data);
 534          continue;
 535       }
 536
 537       dashes = strstr(line, "---");
 538       if (dashes) {
 539          const struct {
 540             const char *match;
 541             const char *name;
 542          } buffers[] = {
 543             { "ringbuffer", "ring buffer" },
 544             { "gtt_offset", "batch buffer" },
 545             { "hw context", "HW Context" },
 546             { "hw status", "HW status" },
 547             { "wa context", "WA context" },
 548             { "wa batchbuffer", "WA batch" },
 549             { "user", "user" },
 550             { "semaphores", "semaphores", },
 551             { "guc log buffer", "GuC log", },
 552             { NULL, "unknown" },
 553          }, *b;
 554
 555          printf("%s", line);
 556
 557          gtt_offset = 0;
 558
 559          free(ring_name);
 560          ring_name = malloc(dashes - line);
 561          strncpy(ring_name, line, dashes - line);
 562          ring_name[dashes - line - 1] = '\0';
 563
 564          dashes += 4;
 565          for (b = buffers; b->match; b++) {
 566             if (strncasecmp(dashes, b->match, strlen(b->match)) == 0)
 567                break;
 568          }
 569
 570          buffer_name = b->name;
 571
 572          uint32_t hi, lo;
 573          dashes = strchr(dashes, '=');
 574          if (dashes && sscanf(dashes, "= 0x%08x %08x\n", &hi, &lo))
 575             gtt_offset = ((uint64_t) hi) << 32 | lo;
 576
 577          continue;
 578       }
 579
 580       matched = sscanf(line, "%08x : %08x", &offset, &value);
 581       if (matched != 2) {
 582          uint32_t reg, reg2;
 583
 584          /* display reg section is after the ringbuffers, don't mix them */
 585          printf("%s", line);
 586
 587          matched = sscanf(line, "PCI ID: 0x%04x\n", &reg);
 588          if (matched == 0)
 589             matched = sscanf(line, " PCI ID: 0x%04x\n", &reg);
 590          if (matched == 0) {
 591             const char *pci_id_start = strstr(line, "PCI ID");
 592             if (pci_id_start)
 593                matched = sscanf(pci_id_start, "PCI ID: 0x%04x\n", &reg);
 594          }
 595          if (matched == 1) {
 596             if (!gen_get_device_info(reg, &devinfo)) {
 597                printf("Unable to identify devid=%x\n", reg);
 598                exit(EXIT_FAILURE);
 599             }
 600
 601             disasm = gen_disasm_create(reg);
 602
 603             printf("Detected GEN%i chipset\n", devinfo.gen);
 604
 605             if (xml_path == NULL)
 606                spec = gen_spec_load(&devinfo);
 607             else
 608                spec = gen_spec_load_from_path(&devinfo, xml_path);
 609          }
 610
 611          matched = sscanf(line, "  CTL: 0x%08x\n", &reg);
 612          if (matched == 1) {
 613             print_register(spec,
 614                            register_name_from_ring(ctl_registers,
 615                                                    ARRAY_SIZE(ctl_registers),
 616                                                    ring_name), reg);
 617          }
 618
 619          matched = sscanf(line, "  HEAD: 0x%08x\n", &reg);
 620          if (matched == 1)
 621             print_head(reg);
 622
 623          matched = sscanf(line, "  ACTHD: 0x%08x\n", &reg);
 624          if (matched == 1) {
 625             print_register(spec,
 626                            register_name_from_ring(acthd_registers,
 627                                                    ARRAY_SIZE(acthd_registers),
 628                                                    ring_name), reg);
 629          }
 630
 631          matched = sscanf(line, "  PGTBL_ER: 0x%08x\n", &reg);
 632          if (matched == 1 && reg)
 633             print_pgtbl_err(reg, &devinfo);
 634
 635          matched = sscanf(line, "  ERROR: 0x%08x\n", &reg);
 636          if (matched == 1 && reg) {
 637             print_register(spec, "GFX_ARB_ERROR_RPT", reg);
 638          }
 639
 640          matched = sscanf(line, "  INSTDONE: 0x%08x\n", &reg);
 641          if (matched == 1) {
 642             const char *reg_name =
 643                instdone_register_for_ring(&devinfo, ring_name);
 644             if (reg_name)
 645                print_register(spec, reg_name, reg);
 646          }
 647
 648          matched = sscanf(line, "  INSTDONE1: 0x%08x\n", &reg);
 649          if (matched == 1)
 650             print_register(spec, "INSTDONE_1", reg);
 651
 652          matched = sscanf(line, "  fence[%i] = %Lx\n", &reg, &fence);
 653          if (matched == 2)
 654             print_fence(&devinfo, fence);
 655
 656          matched = sscanf(line, "  FAULT_REG: 0x%08x\n", &reg);
 657          if (matched == 1 && reg) {
 658             const char *reg_name =
 659                register_name_from_ring(fault_registers,
 660                                        ARRAY_SIZE(fault_registers),
 661                                        ring_name);
 662             if (reg_name == NULL)
 663                reg_name = "FAULT_REG";
 664             print_register(spec, reg_name, reg);
 665          }
 666
 667          matched = sscanf(line, "  FAULT_TLB_DATA: 0x%08x 0x%08x\n", &reg, &reg2);
 668          if (matched == 2)
 669             print_fault_data(&devinfo, reg, reg2);
 670
 671          continue;
 672       }
 673    }
 674
 675    gen_disasm_destroy(disasm);
 676    free(line);
 677    free(ring_name);
 678 }
 679
 680 static void
 681 setup_pager(void)
 682 {
 683    int fds[2];
 684    pid_t pid;
 685
 686    if (!isatty(1))
 687       return;
 688
 689    if (pipe(fds) == -1)
 690       return;
 691
 692    pid = fork();
 693    if (pid == -1)
 694       return;
 695
 696    if (pid == 0) {
 697       close(fds[1]);
 698       dup2(fds[0], 0);
 699       execlp("less", "less", "-FRSi", NULL);
 700    }
 701
 702    close(fds[0]);
 703    dup2(fds[1], 1);
 704    close(fds[1]);
 705 }
 706
 707 static void
 708 print_help(const char *progname, FILE *file)
 709 {
 710    fprintf(file,
 711            "Usage: %s [OPTION]... [FILE]\n"
 712            "Parse an Intel GPU i915_error_state.\n"
 713            "With no FILE, debugfs-dri-directory is probed for in /debug and \n"
 714            "/sys/kernel/debug.  Otherwise, it may be specified. If a file is given,\n"
 715            "it is parsed as an GPU dump in the format of /debug/dri/0/i915_error_state.\n\n"
 716            "      --help          display this help and exit\n"
 717            "      --headers       decode only command headers\n"
 718            "      --color[=WHEN]  colorize the output; WHEN can be 'auto' (default\n"
 719            "                        if omitted), 'always', or 'never'\n"
 720            "      --no-pager      don't launch pager\n"
 721            "      --no-offsets    don't print instruction offsets\n"
 722            "      --xml=DIR       load hardware xml description from directory DIR\n",
 723            progname);
 724 }
 725
 726 int
 727 main(int argc, char *argv[])
 728 {
 729    FILE *file;
 730    const char *path;
 731    struct stat st;
 732    int c, i, error;
 733    bool help = false, pager = true;
 734    const struct option aubinator_opts[] = {
 735       { "help",       no_argument,       (int *) &help,                 true },
 736       { "no-pager",   no_argument,       (int *) &pager,                false },
 737       { "no-offsets", no_argument,       (int *) &option_print_offsets, false },
 738       { "headers",    no_argument,       (int *) &option_full_decode,   false },
 739       { "color",      required_argument, NULL,                          'c' },
 740       { "xml",        required_argument, NULL,                          'x' },
 741       { NULL,         0,                 NULL,                          0 }
 742    };
 743
 744    i = 0;
 745    while ((c = getopt_long(argc, argv, "", aubinator_opts, &i)) != -1) {
 746       switch (c) {
 747       case 'c':
 748          if (optarg == NULL || strcmp(optarg, "always") == 0)
 749             option_color = COLOR_ALWAYS;
 750          else if (strcmp(optarg, "never") == 0)
 751             option_color = COLOR_NEVER;
 752          else if (strcmp(optarg, "auto") == 0)
 753             option_color = COLOR_AUTO;
 754          else {
 755             fprintf(stderr, "invalid value for --color: %s", optarg);
 756             exit(EXIT_FAILURE);
 757          }
 758          break;
 759       case 'x':
 760          xml_path = strdup(optarg);
 761          break;
 762       default:
 763          break;
 764       }
 765    }
 766
 767    if (help || argc == 1) {
 768       print_help(argv[0], stderr);
 769       exit(EXIT_SUCCESS);
 770    }
 771
 772    if (optind >= argc) {
 773       if (isatty(0)) {
 774          path = "/sys/class/drm/card0/error";
 775          error = stat(path, &st);
 776          if (error != 0) {
 777             path = "/debug/dri";
 778             error = stat(path, &st);
 779          }
 780          if (error != 0) {
 781             path = "/sys/kernel/debug/dri";
 782             error = stat(path, &st);
 783          }
 784          if (error != 0) {
 785             errx(1,
 786                  "Couldn't find i915 debugfs directory.\n\n"
 787                  "Is debugfs mounted? You might try mounting it with a command such as:\n\n"
 788                  "\tsudo mount -t debugfs debugfs /sys/kernel/debug\n");
 789          }
 790       } else {
 791          read_data_file(stdin);
 792          exit(EXIT_SUCCESS);
 793       }
 794    } else {
 795       path = argv[optind];
 796       error = stat(path, &st);
 797       if (error != 0) {
 798          fprintf(stderr, "Error opening %s: %s\n",
 799                  path, strerror(errno));
 800          exit(EXIT_FAILURE);
 801       }
 802    }
 803
 804    if (option_color == COLOR_AUTO)
 805       option_color = isatty(1) ? COLOR_ALWAYS : COLOR_NEVER;
 806
 807    if (isatty(1) && pager)
 808       setup_pager();
 809
 810    if (S_ISDIR(st.st_mode)) {
 811       int ret;
 812       char *filename;
 813
 814       ret = asprintf(&filename, "%s/i915_error_state", path);
 815       assert(ret > 0);
 816       file = fopen(filename, "r");
 817       if (!file) {
 818          int minor;
 819          free(filename);
 820          for (minor = 0; minor < 64; minor++) {
 821             ret = asprintf(&filename, "%s/%d/i915_error_state", path, minor);
 822             assert(ret > 0);
 823
 824             file = fopen(filename, "r");
 825             if (file)
 826                break;
 827
 828             free(filename);
 829          }
 830       }
 831       if (!file) {
 832          fprintf(stderr, "Failed to find i915_error_state beneath %s\n",
 833                  path);
 834          return EXIT_FAILURE;
 835       }
 836    } else {
 837       file = fopen(path, "r");
 838       if (!file) {
 839          fprintf(stderr, "Failed to open %s: %s\n",
 840                  path, strerror(errno));
 841          return EXIT_FAILURE;
 842       }
 843    }
 844
 845    read_data_file(file);
 846    fclose(file);
 847
 848    /* close the stdout which is opened to write the output */
 849    fflush(stdout);
 850    close(1);
 851    wait(NULL);
 852
 853    if (xml_path)
 854       free(xml_path);
 855
 856    return EXIT_SUCCESS;
 857 }
 858
 859 /* vim: set ts=8 sw=8 tw=0 cino=:0,(0 noet :*/