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
  44 #define CSI "\e["
  45 #define BLUE_HEADER  CSI "0;44m"
  46 #define GREEN_HEADER CSI "1;42m"
  47 #define NORMAL       CSI "0m"
  48
  49 #define MIN(a, b) ((a) < (b) ? (a) : (b))
  50
  51 /* options */
  52
  53 static bool option_full_decode = true;
  54 static bool option_print_all_bb = false;
  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 =
  70       name ? gen_spec_find_register_by_name(spec, name) : NULL;
  71
  72    if (reg_spec) {
  73       gen_print_group(stdout, reg_spec, 0, &reg, 0,
  74                       option_color == COLOR_ALWAYS);
  75    }
  76 }
  77
  78 struct ring_register_mapping {
  79    unsigned ring_class;
  80    unsigned ring_instance;
  81    const char *register_name;
  82 };
  83
  84 enum {
  85    RCS,
  86    BCS,
  87    VCS,
  88    VECS,
  89 };
  90
  91 static const struct ring_register_mapping acthd_registers[] = {
  92    { BCS, 0, "BCS_ACTHD_UDW" },
  93    { VCS, 0, "VCS_ACTHD_UDW" },
  94    { VCS, 1, "VCS2_ACTHD_UDW" },
  95    { RCS, 0, "ACTHD_UDW" },
  96    { VECS, 0, "VECS_ACTHD_UDW" },
  97 };
  98
  99 static const struct ring_register_mapping ctl_registers[] = {
 100    { BCS, 0, "BCS_RING_BUFFER_CTL" },
 101    { VCS, 0, "VCS_RING_BUFFER_CTL" },
 102    { VCS, 1, "VCS2_RING_BUFFER_CTL" },
 103    { RCS, 0, "RCS_RING_BUFFER_CTL" },
 104    { VECS, 0,  "VECS_RING_BUFFER_CTL" },
 105 };
 106
 107 static const struct ring_register_mapping fault_registers[] = {
 108    { BCS, 0, "BCS_FAULT_REG" },
 109    { VCS, 0, "VCS_FAULT_REG" },
 110    { RCS, 0, "RCS_FAULT_REG" },
 111    { VECS, 0, "VECS_FAULT_REG" },
 112 };
 113
 114 static int ring_name_to_class(const char *ring_name,
 115                               unsigned int *class)
 116 {
 117    static const char *class_names[] = {
 118       [RCS] = "rcs",
 119       [BCS] = "bcs",
 120       [VCS] = "vcs",
 121       [VECS] = "vecs",
 122    };
 123    for (size_t i = 0; i < ARRAY_SIZE(class_names); i++) {
 124       if (strncmp(ring_name, class_names[i], strlen(class_names[i])))
 125          continue;
 126
 127       *class = i;
 128       return atoi(ring_name + strlen(class_names[i]));
 129    }
 130
 131    static const struct {
 132       const char *name;
 133       unsigned int class;
 134       int instance;
 135    } legacy_names[] = {
 136       { "render", RCS, 0 },
 137       { "blt", BCS, 0 },
 138       { "bsd", VCS, 0 },
 139       { "bsd2", VCS, 1 },
 140       { "vebox", VECS, 0 },
 141    };
 142    for (size_t i = 0; i < ARRAY_SIZE(legacy_names); i++) {
 143       if (strcmp(ring_name, legacy_names[i].name))
 144          continue;
 145
 146       *class = legacy_names[i].class;
 147       return legacy_names[i].instance;
 148    }
 149
 150    return -1;
 151 }
 152
 153 static const char *
 154 register_name_from_ring(const struct ring_register_mapping *mapping,
 155                         unsigned nb_mapping,
 156                         const char *ring_name)
 157 {
 158    unsigned int class;
 159    int instance;
 160
 161    instance = ring_name_to_class(ring_name, &class);
 162    if (instance < 0)
 163       return NULL;
 164
 165    for (unsigned i = 0; i < nb_mapping; i++) {
 166       if (mapping[i].ring_class == class &&
 167           mapping[i].ring_instance == instance)
 168          return mapping[i].register_name;
 169    }
 170    return NULL;
 171 }
 172
 173 static const char *
 174 instdone_register_for_ring(const struct gen_device_info *devinfo,
 175                            const char *ring_name)
 176 {
 177    unsigned int class;
 178    int instance;
 179
 180    instance = ring_name_to_class(ring_name, &class);
 181    if (instance < 0)
 182       return NULL;
 183
 184    switch (class) {
 185    case RCS:
 186       if (devinfo->gen == 6)
 187          return "INSTDONE_2";
 188       else
 189          return "INSTDONE_1";
 190
 191    case BCS:
 192       return "BCS_INSTDONE";
 193
 194    case VCS:
 195       switch (instance) {
 196       case 0:
 197          return "VCS_INSTDONE";
 198       case 1:
 199          return "VCS2_INSTDONE";
 200       default:
 201          return NULL;
 202       }
 203
 204    case VECS:
 205       return "VECS_INSTDONE";
 206    }
 207
 208    return NULL;
 209 }
 210
 211 static void
 212 print_pgtbl_err(unsigned int reg, struct gen_device_info *devinfo)
 213 {
 214    if (reg & (1 << 26))
 215       printf("    Invalid Sampler Cache GTT entry\n");
 216    if (reg & (1 << 24))
 217       printf("    Invalid Render Cache GTT entry\n");
 218    if (reg & (1 << 23))
 219       printf("    Invalid Instruction/State Cache GTT entry\n");
 220    if (reg & (1 << 22))
 221       printf("    There is no ROC, this cannot occur!\n");
 222    if (reg & (1 << 21))
 223       printf("    Invalid GTT entry during Vertex Fetch\n");
 224    if (reg & (1 << 20))
 225       printf("    Invalid GTT entry during Command Fetch\n");
 226    if (reg & (1 << 19))
 227       printf("    Invalid GTT entry during CS\n");
 228    if (reg & (1 << 18))
 229       printf("    Invalid GTT entry during Cursor Fetch\n");
 230    if (reg & (1 << 17))
 231       printf("    Invalid GTT entry during Overlay Fetch\n");
 232    if (reg & (1 << 8))
 233       printf("    Invalid GTT entry during Display B Fetch\n");
 234    if (reg & (1 << 4))
 235       printf("    Invalid GTT entry during Display A Fetch\n");
 236    if (reg & (1 << 1))
 237       printf("    Valid PTE references illegal memory\n");
 238    if (reg & (1 << 0))
 239       printf("    Invalid GTT entry during fetch for host\n");
 240 }
 241
 242 static void
 243 print_snb_fence(struct gen_device_info *devinfo, uint64_t fence)
 244 {
 245    printf("    %svalid, %c-tiled, pitch: %i, start: 0x%08x, size: %u\n",
 246           fence & 1 ? "" : "in",
 247           fence & (1<<1) ? 'y' : 'x',
 248           (int)(((fence>>32)&0xfff)+1)*128,
 249           (uint32_t)fence & 0xfffff000,
 250           (uint32_t)(((fence>>32)&0xfffff000) - (fence&0xfffff000) + 4096));
 251 }
 252
 253 static void
 254 print_i965_fence(struct gen_device_info *devinfo, uint64_t fence)
 255 {
 256    printf("    %svalid, %c-tiled, pitch: %i, start: 0x%08x, size: %u\n",
 257           fence & 1 ? "" : "in",
 258           fence & (1<<1) ? 'y' : 'x',
 259           (int)(((fence>>2)&0x1ff)+1)*128,
 260           (uint32_t)fence & 0xfffff000,
 261           (uint32_t)(((fence>>32)&0xfffff000) - (fence&0xfffff000) + 4096));
 262 }
 263
 264 static void
 265 print_fence(struct gen_device_info *devinfo, uint64_t fence)
 266 {
 267    if (devinfo->gen == 6 || devinfo->gen == 7) {
 268       return print_snb_fence(devinfo, fence);
 269    } else if (devinfo->gen == 4 || devinfo->gen == 5) {
 270       return print_i965_fence(devinfo, fence);
 271    }
 272 }
 273
 274 static void
 275 print_fault_data(struct gen_device_info *devinfo, uint32_t data1, uint32_t data0)
 276 {
 277    uint64_t address;
 278
 279    if (devinfo->gen < 8)
 280       return;
 281
 282    address = ((uint64_t)(data0) << 12) | ((uint64_t)data1 & 0xf) << 44;
 283    printf("    Address 0x%016" PRIx64 " %s\n", address,
 284           data1 & (1 << 4) ? "GGTT" : "PPGTT");
 285 }
 286
 287 #define CSI "\e["
 288 #define NORMAL       CSI "0m"
 289
 290 struct section {
 291    uint64_t gtt_offset;
 292    char *ring_name;
 293    const char *buffer_name;
 294    uint32_t *data;
 295    int count;
 296 };
 297
 298 #define MAX_SECTIONS 30
 299 static struct section sections[MAX_SECTIONS];
 300
 301 static int zlib_inflate(uint32_t **ptr, int len)
 302 {
 303    struct z_stream_s zstream;
 304    void *out;
 305    const uint32_t out_size = 128*4096;  /* approximate obj size */
 306
 307    memset(&zstream, 0, sizeof(zstream));
 308
 309    zstream.next_in = (unsigned char *)*ptr;
 310    zstream.avail_in = 4*len;
 311
 312    if (inflateInit(&zstream) != Z_OK)
 313       return 0;
 314
 315    out = malloc(out_size);
 316    zstream.next_out = out;
 317    zstream.avail_out = out_size;
 318
 319    do {
 320       switch (inflate(&zstream, Z_SYNC_FLUSH)) {
 321       case Z_STREAM_END:
 322          goto end;
 323       case Z_OK:
 324          break;
 325       default:
 326          inflateEnd(&zstream);
 327          return 0;
 328       }
 329
 330       if (zstream.avail_out)
 331          break;
 332
 333       out = realloc(out, 2*zstream.total_out);
 334       if (out == NULL) {
 335          inflateEnd(&zstream);
 336          return 0;
 337       }
 338
 339       zstream.next_out = (unsigned char *)out + zstream.total_out;
 340       zstream.avail_out = zstream.total_out;
 341    } while (1);
 342  end:
 343    inflateEnd(&zstream);
 344    free(*ptr);
 345    *ptr = out;
 346    return zstream.total_out / 4;
 347 }
 348
 349 static int ascii85_decode(const char *in, uint32_t **out, bool inflate)
 350 {
 351    int len = 0, size = 1024;
 352
 353    *out = realloc(*out, sizeof(uint32_t)*size);
 354    if (*out == NULL)
 355       return 0;
 356
 357    while (*in >= '!' && *in <= 'z') {
 358       uint32_t v = 0;
 359
 360       if (len == size) {
 361          size *= 2;
 362          *out = realloc(*out, sizeof(uint32_t)*size);
 363          if (*out == NULL)
 364             return 0;
 365       }
 366
 367       if (*in == 'z') {
 368          in++;
 369       } else {
 370          v += in[0] - 33; v *= 85;
 371          v += in[1] - 33; v *= 85;
 372          v += in[2] - 33; v *= 85;
 373          v += in[3] - 33; v *= 85;
 374          v += in[4] - 33;
 375          in += 5;
 376       }
 377       (*out)[len++] = v;
 378    }
 379
 380    if (!inflate)
 381       return len;
 382
 383    return zlib_inflate(out, len);
 384 }
 385
 386 static struct gen_batch_decode_bo
 387 get_gen_batch_bo(void *user_data, uint64_t address)
 388 {
 389    for (int s = 0; s < MAX_SECTIONS; s++) {
 390       if (sections[s].gtt_offset <= address &&
 391           address < sections[s].gtt_offset + sections[s].count * 4) {
 392          return (struct gen_batch_decode_bo) {
 393             .addr = sections[s].gtt_offset,
 394             .map = sections[s].data,
 395             .size = sections[s].count * 4,
 396          };
 397       }
 398    }
 399
 400    return (struct gen_batch_decode_bo) { .map = NULL };
 401 }
 402
 403 static void
 404 read_data_file(FILE *file)
 405 {
 406    struct gen_spec *spec = NULL;
 407    long long unsigned fence;
 408    int matched;
 409    char *line = NULL;
 410    size_t line_size;
 411    uint32_t offset, value;
 412    char *ring_name = NULL;
 413    struct gen_device_info devinfo;
 414    int sect_num = 0;
 415
 416    while (getline(&line, &line_size, file) > 0) {
 417       char *new_ring_name = NULL;
 418       char *dashes;
 419
 420       if (sscanf(line, "%m[^ ] command stream\n", &new_ring_name) > 0) {
 421          free(ring_name);
 422          ring_name = new_ring_name;
 423       }
 424
 425       if (line[0] == ':' || line[0] == '~') {
 426          uint32_t *data = NULL;
 427          int count = ascii85_decode(line+1, &data, line[0] == ':');
 428          if (count == 0) {
 429             fprintf(stderr, "ASCII85 decode failed.\n");
 430             exit(EXIT_FAILURE);
 431          }
 432          sections[sect_num].data = data;
 433          sections[sect_num].count = count;
 434          sect_num++;
 435          continue;
 436       }
 437
 438       dashes = strstr(line, "---");
 439       if (dashes) {
 440          const struct {
 441             const char *match;
 442             const char *name;
 443          } buffers[] = {
 444             { "ringbuffer", "ring buffer" },
 445             { "gtt_offset", "batch buffer" },
 446             { "hw context", "HW Context" },
 447             { "hw status", "HW status" },
 448             { "wa context", "WA context" },
 449             { "wa batchbuffer", "WA batch" },
 450             { "NULL context", "Kernel context" },
 451             { "user", "user" },
 452             { "semaphores", "semaphores", },
 453             { "guc log buffer", "GuC log", },
 454             { NULL, "unknown" },
 455          }, *b;
 456
 457          free(ring_name);
 458          ring_name = malloc(dashes - line);
 459          strncpy(ring_name, line, dashes - line);
 460          ring_name[dashes - line - 1] = '\0';
 461
 462          dashes += 4;
 463          for (b = buffers; b->match; b++) {
 464             if (strncasecmp(dashes, b->match, strlen(b->match)) == 0)
 465                break;
 466          }
 467
 468          sections[sect_num].buffer_name = b->name;
 469          sections[sect_num].ring_name = strdup(ring_name);
 470
 471          uint32_t hi, lo;
 472          dashes = strchr(dashes, '=');
 473          if (dashes && sscanf(dashes, "= 0x%08x %08x\n", &hi, &lo))
 474             sections[sect_num].gtt_offset = ((uint64_t) hi) << 32 | lo;
 475
 476          continue;
 477       }
 478
 479       matched = sscanf(line, "%08x : %08x", &offset, &value);
 480       if (matched != 2) {
 481          uint32_t reg, reg2;
 482
 483          /* display reg section is after the ringbuffers, don't mix them */
 484          printf("%s", line);
 485
 486          matched = sscanf(line, "PCI ID: 0x%04x\n", &reg);
 487          if (matched == 0)
 488             matched = sscanf(line, " PCI ID: 0x%04x\n", &reg);
 489          if (matched == 0) {
 490             const char *pci_id_start = strstr(line, "PCI ID");
 491             if (pci_id_start)
 492                matched = sscanf(pci_id_start, "PCI ID: 0x%04x\n", &reg);
 493          }
 494          if (matched == 1) {
 495             if (!gen_get_device_info(reg, &devinfo)) {
 496                printf("Unable to identify devid=%x\n", reg);
 497                exit(EXIT_FAILURE);
 498             }
 499
 500             printf("Detected GEN%i chipset\n", devinfo.gen);
 501
 502             if (xml_path == NULL)
 503                spec = gen_spec_load(&devinfo);
 504             else
 505                spec = gen_spec_load_from_path(&devinfo, xml_path);
 506          }
 507
 508          matched = sscanf(line, "  CTL: 0x%08x\n", &reg);
 509          if (matched == 1) {
 510             print_register(spec,
 511                            register_name_from_ring(ctl_registers,
 512                                                    ARRAY_SIZE(ctl_registers),
 513                                                    ring_name), reg);
 514          }
 515
 516          matched = sscanf(line, "  HEAD: 0x%08x\n", &reg);
 517          if (matched == 1)
 518             print_head(reg);
 519
 520          matched = sscanf(line, "  ACTHD: 0x%08x\n", &reg);
 521          if (matched == 1) {
 522             print_register(spec,
 523                            register_name_from_ring(acthd_registers,
 524                                                    ARRAY_SIZE(acthd_registers),
 525                                                    ring_name), reg);
 526          }
 527
 528          matched = sscanf(line, "  PGTBL_ER: 0x%08x\n", &reg);
 529          if (matched == 1 && reg)
 530             print_pgtbl_err(reg, &devinfo);
 531
 532          matched = sscanf(line, "  ERROR: 0x%08x\n", &reg);
 533          if (matched == 1 && reg) {
 534             print_register(spec, "GFX_ARB_ERROR_RPT", reg);
 535          }
 536
 537          matched = sscanf(line, "  INSTDONE: 0x%08x\n", &reg);
 538          if (matched == 1) {
 539             const char *reg_name =
 540                instdone_register_for_ring(&devinfo, ring_name);
 541             if (reg_name)
 542                print_register(spec, reg_name, reg);
 543          }
 544
 545          matched = sscanf(line, "  SC_INSTDONE: 0x%08x\n", &reg);
 546          if (matched == 1)
 547             print_register(spec, "SC_INSTDONE", reg);
 548
 549          matched = sscanf(line, "  SAMPLER_INSTDONE[%*d][%*d]: 0x%08x\n", &reg);
 550          if (matched == 1)
 551             print_register(spec, "SAMPLER_INSTDONE", reg);
 552
 553          matched = sscanf(line, "  ROW_INSTDONE[%*d][%*d]: 0x%08x\n", &reg);
 554          if (matched == 1)
 555             print_register(spec, "ROW_INSTDONE", reg);
 556
 557          matched = sscanf(line, "  INSTDONE1: 0x%08x\n", &reg);
 558          if (matched == 1)
 559             print_register(spec, "INSTDONE_1", reg);
 560
 561          matched = sscanf(line, "  fence[%i] = %Lx\n", &reg, &fence);
 562          if (matched == 2)
 563             print_fence(&devinfo, fence);
 564
 565          matched = sscanf(line, "  FAULT_REG: 0x%08x\n", &reg);
 566          if (matched == 1 && reg) {
 567             const char *reg_name =
 568                register_name_from_ring(fault_registers,
 569                                        ARRAY_SIZE(fault_registers),
 570                                        ring_name);
 571             if (reg_name == NULL)
 572                reg_name = "FAULT_REG";
 573             print_register(spec, reg_name, reg);
 574          }
 575
 576          matched = sscanf(line, "  FAULT_TLB_DATA: 0x%08x 0x%08x\n", &reg, &reg2);
 577          if (matched == 2)
 578             print_fault_data(&devinfo, reg, reg2);
 579
 580          continue;
 581       }
 582    }
 583
 584    free(line);
 585    free(ring_name);
 586
 587    enum gen_batch_decode_flags batch_flags = 0;
 588    if (option_color == COLOR_ALWAYS)
 589       batch_flags |= GEN_BATCH_DECODE_IN_COLOR;
 590    if (option_full_decode)
 591       batch_flags |= GEN_BATCH_DECODE_FULL;
 592    if (option_print_offsets)
 593       batch_flags |= GEN_BATCH_DECODE_OFFSETS;
 594    batch_flags |= GEN_BATCH_DECODE_FLOATS;
 595
 596    struct gen_batch_decode_ctx batch_ctx;
 597    gen_batch_decode_ctx_init(&batch_ctx, &devinfo, stdout, batch_flags,
 598                              xml_path, get_gen_batch_bo, NULL);
 599
 600
 601    for (int s = 0; s < sect_num; s++) {
 602       printf("--- %s (%s) at 0x%08x %08x\n",
 603              sections[s].buffer_name, sections[s].ring_name,
 604              (unsigned) (sections[s].gtt_offset >> 32),
 605              (unsigned) sections[s].gtt_offset);
 606
 607       if (option_print_all_bb ||
 608           strcmp(sections[s].buffer_name, "batch buffer") == 0 ||
 609           strcmp(sections[s].buffer_name, "ring buffer") == 0 ||
 610           strcmp(sections[s].buffer_name, "HW Context") == 0) {
 611          gen_print_batch(&batch_ctx, sections[s].data, sections[s].count,
 612                          sections[s].gtt_offset);
 613       }
 614    }
 615
 616    gen_batch_decode_ctx_finish(&batch_ctx);
 617
 618    for (int s = 0; s < sect_num; s++) {
 619       free(sections[s].ring_name);
 620       free(sections[s].data);
 621    }
 622 }
 623
 624 static void
 625 setup_pager(void)
 626 {
 627    int fds[2];
 628    pid_t pid;
 629
 630    if (!isatty(1))
 631       return;
 632
 633    if (pipe(fds) == -1)
 634       return;
 635
 636    pid = fork();
 637    if (pid == -1)
 638       return;
 639
 640    if (pid == 0) {
 641       close(fds[1]);
 642       dup2(fds[0], 0);
 643       execlp("less", "less", "-FRSi", NULL);
 644    }
 645
 646    close(fds[0]);
 647    dup2(fds[1], 1);
 648    close(fds[1]);
 649 }
 650
 651 static void
 652 print_help(const char *progname, FILE *file)
 653 {
 654    fprintf(file,
 655            "Usage: %s [OPTION]... [FILE]\n"
 656            "Parse an Intel GPU i915_error_state.\n"
 657            "With no FILE, debugfs-dri-directory is probed for in /debug and \n"
 658            "/sys/kernel/debug.  Otherwise, it may be specified. If a file is given,\n"
 659            "it is parsed as an GPU dump in the format of /debug/dri/0/i915_error_state.\n\n"
 660            "      --help          display this help and exit\n"
 661            "      --headers       decode only command headers\n"
 662            "      --color[=WHEN]  colorize the output; WHEN can be 'auto' (default\n"
 663            "                        if omitted), 'always', or 'never'\n"
 664            "      --no-pager      don't launch pager\n"
 665            "      --no-offsets    don't print instruction offsets\n"
 666            "      --xml=DIR       load hardware xml description from directory DIR\n"
 667            "      --all-bb        print out all batchbuffers\n",
 668            progname);
 669 }
 670
 671 int
 672 main(int argc, char *argv[])
 673 {
 674    FILE *file;
 675    const char *path;
 676    struct stat st;
 677    int c, i, error;
 678    bool help = false, pager = true;
 679    const struct option aubinator_opts[] = {
 680       { "help",       no_argument,       (int *) &help,                 true },
 681       { "no-pager",   no_argument,       (int *) &pager,                false },
 682       { "no-offsets", no_argument,       (int *) &option_print_offsets, false },
 683       { "headers",    no_argument,       (int *) &option_full_decode,   false },
 684       { "color",      required_argument, NULL,                          'c' },
 685       { "xml",        required_argument, NULL,                          'x' },
 686       { "all-bb",     no_argument,       (int *) &option_print_all_bb,  true },
 687       { NULL,         0,                 NULL,                          0 }
 688    };
 689
 690    i = 0;
 691    while ((c = getopt_long(argc, argv, "", aubinator_opts, &i)) != -1) {
 692       switch (c) {
 693       case 'c':
 694          if (optarg == NULL || strcmp(optarg, "always") == 0)
 695             option_color = COLOR_ALWAYS;
 696          else if (strcmp(optarg, "never") == 0)
 697             option_color = COLOR_NEVER;
 698          else if (strcmp(optarg, "auto") == 0)
 699             option_color = COLOR_AUTO;
 700          else {
 701             fprintf(stderr, "invalid value for --color: %s", optarg);
 702             exit(EXIT_FAILURE);
 703          }
 704          break;
 705       case 'x':
 706          xml_path = strdup(optarg);
 707          break;
 708       default:
 709          break;
 710       }
 711    }
 712
 713    if (help || argc == 1) {
 714       print_help(argv[0], stderr);
 715       exit(EXIT_SUCCESS);
 716    }
 717
 718    if (optind >= argc) {
 719       if (isatty(0)) {
 720          path = "/sys/class/drm/card0/error";
 721          error = stat(path, &st);
 722          if (error != 0) {
 723             path = "/debug/dri";
 724             error = stat(path, &st);
 725          }
 726          if (error != 0) {
 727             path = "/sys/kernel/debug/dri";
 728             error = stat(path, &st);
 729          }
 730          if (error != 0) {
 731             errx(1,
 732                  "Couldn't find i915 debugfs directory.\n\n"
 733                  "Is debugfs mounted? You might try mounting it with a command such as:\n\n"
 734                  "\tsudo mount -t debugfs debugfs /sys/kernel/debug\n");
 735          }
 736       } else {
 737          read_data_file(stdin);
 738          exit(EXIT_SUCCESS);
 739       }
 740    } else {
 741       path = argv[optind];
 742       error = stat(path, &st);
 743       if (error != 0) {
 744          fprintf(stderr, "Error opening %s: %s\n",
 745                  path, strerror(errno));
 746          exit(EXIT_FAILURE);
 747       }
 748    }
 749
 750    if (option_color == COLOR_AUTO)
 751       option_color = isatty(1) ? COLOR_ALWAYS : COLOR_NEVER;
 752
 753    if (isatty(1) && pager)
 754       setup_pager();
 755
 756    if (S_ISDIR(st.st_mode)) {
 757       int ret;
 758       char *filename;
 759
 760       ret = asprintf(&filename, "%s/i915_error_state", path);
 761       assert(ret > 0);
 762       file = fopen(filename, "r");
 763       if (!file) {
 764          int minor;
 765          free(filename);
 766          for (minor = 0; minor < 64; minor++) {
 767             ret = asprintf(&filename, "%s/%d/i915_error_state", path, minor);
 768             assert(ret > 0);
 769
 770             file = fopen(filename, "r");
 771             if (file)
 772                break;
 773
 774             free(filename);
 775          }
 776       }
 777       if (!file) {
 778          fprintf(stderr, "Failed to find i915_error_state beneath %s\n",
 779                  path);
 780          return EXIT_FAILURE;
 781       }
 782    } else {
 783       file = fopen(path, "r");
 784       if (!file) {
 785          fprintf(stderr, "Failed to open %s: %s\n",
 786                  path, strerror(errno));
 787          return EXIT_FAILURE;
 788       }
 789    }
 790
 791    read_data_file(file);
 792    fclose(file);
 793
 794    /* close the stdout which is opened to write the output */
 795    fflush(stdout);
 796    close(1);
 797    wait(NULL);
 798
 799    if (xml_path)
 800       free(xml_path);
 801
 802    return EXIT_SUCCESS;
 803 }
 804
 805 /* vim: set ts=8 sw=8 tw=0 cino=:0,(0 noet :*/