src/gallium/drivers/radeonsi/si_debug.c

   1 /*
   2  * Copyright 2015 Advanced Micro Devices, Inc.
   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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *      Marek Olšák <maraeo@gmail.com>
  25  */
  26
  27 #include "si_pipe.h"
  28 #include "si_shader.h"
  29 #include "sid.h"
  30 #include "sid_tables.h"
  31 #include "ddebug/dd_util.h"
  32
  33
  34 static void si_dump_shader(struct si_shader_selector *sel, const char *name,
  35                            FILE *f)
  36 {
  37         if (!sel || !sel->current)
  38                 return;
  39
  40         fprintf(f, "%s shader disassembly:\n", name);
  41         si_dump_shader_key(sel->type, &sel->current->key, f);
  42         fprintf(f, "%s\n\n", sel->current->binary.disasm_string);
  43 }
  44
  45 /* Parsed IBs are difficult to read without colors. Use "less -R file" to
  46  * read them, or use "aha -b -f file" to convert them to html.
  47  */
  48 #define COLOR_RESET     "\033[0m"
  49 #define COLOR_RED       "\033[31m"
  50 #define COLOR_GREEN     "\033[1;32m"
  51 #define COLOR_YELLOW    "\033[1;33m"
  52 #define COLOR_CYAN      "\033[1;36m"
  53
  54 #define INDENT_PKT 8
  55
  56 static void print_spaces(FILE *f, unsigned num)
  57 {
  58         fprintf(f, "%*s", num, "");
  59 }
  60
  61 static void print_value(FILE *file, uint32_t value, int bits)
  62 {
  63         /* Guess if it's int or float */
  64         if (value <= (1 << 15))
  65                 fprintf(file, "%u\n", value);
  66         else {
  67                 float f = uif(value);
  68
  69                 if (fabs(f) < 100000 && f*10 == floor(f*10))
  70                         fprintf(file, "%.1ff\n", f);
  71                 else
  72                         /* Don't print more leading zeros than there are bits. */
  73                         fprintf(file, "0x%0*x\n", bits / 4, value);
  74         }
  75 }
  76
  77 static void print_named_value(FILE *file, const char *name, uint32_t value,
  78                               int bits)
  79 {
  80         print_spaces(file, INDENT_PKT);
  81         fprintf(file, COLOR_YELLOW "%s" COLOR_RESET " <- ", name);
  82         print_value(file, value, bits);
  83 }
  84
  85 static void si_dump_reg(FILE *file, unsigned offset, uint32_t value,
  86                         uint32_t field_mask)
  87 {
  88         int r, f;
  89
  90         for (r = 0; r < ARRAY_SIZE(reg_table); r++) {
  91                 const struct si_reg *reg = &reg_table[r];
  92
  93                 if (reg->offset == offset) {
  94                         bool first_field = true;
  95
  96                         print_spaces(file, INDENT_PKT);
  97                         fprintf(file, COLOR_YELLOW "%s" COLOR_RESET " <- ",
  98                                 reg->name);
  99
 100                         if (!reg->num_fields) {
 101                                 print_value(file, value, 32);
 102                                 return;
 103                         }
 104
 105                         for (f = 0; f < reg->num_fields; f++) {
 106                                 const struct si_field *field = &reg->fields[f];
 107                                 uint32_t val = (value & field->mask) >>
 108                                                (ffs(field->mask) - 1);
 109
 110                                 if (!(field->mask & field_mask))
 111                                         continue;
 112
 113                                 /* Indent the field. */
 114                                 if (!first_field)
 115                                         print_spaces(file,
 116                                                      INDENT_PKT + strlen(reg->name) + 4);
 117
 118                                 /* Print the field. */
 119                                 fprintf(file, "%s = ", field->name);
 120
 121                                 if (val < field->num_values && field->values[val])
 122                                         fprintf(file, "%s\n", field->values[val]);
 123                                 else
 124                                         print_value(file, val,
 125                                                     util_bitcount(field->mask));
 126
 127                                 first_field = false;
 128                         }
 129                         return;
 130                 }
 131         }
 132
 133         fprintf(file, COLOR_YELLOW "0x%05x" COLOR_RESET " = 0x%08x", offset, value);
 134 }
 135
 136 static void si_parse_set_reg_packet(FILE *f, uint32_t *ib, unsigned count,
 137                                     unsigned reg_offset)
 138 {
 139         unsigned reg = (ib[1] << 2) + reg_offset;
 140         int i;
 141
 142         for (i = 0; i < count; i++)
 143                 si_dump_reg(f, reg + i*4, ib[2+i], ~0);
 144 }
 145
 146 static uint32_t *si_parse_packet3(FILE *f, uint32_t *ib, int *num_dw,
 147                                   int trace_id)
 148 {
 149         unsigned count = PKT_COUNT_G(ib[0]);
 150         unsigned op = PKT3_IT_OPCODE_G(ib[0]);
 151         const char *predicate = PKT3_PREDICATE(ib[0]) ? "(predicate)" : "";
 152         int i;
 153
 154         /* Print the name first. */
 155         for (i = 0; i < ARRAY_SIZE(packet3_table); i++)
 156                 if (packet3_table[i].op == op)
 157                         break;
 158
 159         if (i < ARRAY_SIZE(packet3_table))
 160                 if (op == PKT3_SET_CONTEXT_REG ||
 161                     op == PKT3_SET_CONFIG_REG ||
 162                     op == PKT3_SET_UCONFIG_REG ||
 163                     op == PKT3_SET_SH_REG)
 164                         fprintf(f, COLOR_CYAN "%s%s" COLOR_CYAN ":\n",
 165                                 packet3_table[i].name, predicate);
 166                 else
 167                         fprintf(f, COLOR_GREEN "%s%s" COLOR_RESET ":\n",
 168                                 packet3_table[i].name, predicate);
 169         else
 170                 fprintf(f, COLOR_RED "PKT3_UNKNOWN 0x%x%s" COLOR_RESET ":\n",
 171                         op, predicate);
 172
 173         /* Print the contents. */
 174         switch (op) {
 175         case PKT3_SET_CONTEXT_REG:
 176                 si_parse_set_reg_packet(f, ib, count, SI_CONTEXT_REG_OFFSET);
 177                 break;
 178         case PKT3_SET_CONFIG_REG:
 179                 si_parse_set_reg_packet(f, ib, count, SI_CONFIG_REG_OFFSET);
 180                 break;
 181         case PKT3_SET_UCONFIG_REG:
 182                 si_parse_set_reg_packet(f, ib, count, CIK_UCONFIG_REG_OFFSET);
 183                 break;
 184         case PKT3_SET_SH_REG:
 185                 si_parse_set_reg_packet(f, ib, count, SI_SH_REG_OFFSET);
 186                 break;
 187         case PKT3_DRAW_PREAMBLE:
 188                 si_dump_reg(f, R_030908_VGT_PRIMITIVE_TYPE, ib[1], ~0);
 189                 si_dump_reg(f, R_028AA8_IA_MULTI_VGT_PARAM, ib[2], ~0);
 190                 si_dump_reg(f, R_028B58_VGT_LS_HS_CONFIG, ib[3], ~0);
 191                 break;
 192         case PKT3_ACQUIRE_MEM:
 193                 si_dump_reg(f, R_0301F0_CP_COHER_CNTL, ib[1], ~0);
 194                 si_dump_reg(f, R_0301F4_CP_COHER_SIZE, ib[2], ~0);
 195                 si_dump_reg(f, R_030230_CP_COHER_SIZE_HI, ib[3], ~0);
 196                 si_dump_reg(f, R_0301F8_CP_COHER_BASE, ib[4], ~0);
 197                 si_dump_reg(f, R_0301E4_CP_COHER_BASE_HI, ib[5], ~0);
 198                 print_named_value(f, "POLL_INTERVAL", ib[6], 16);
 199                 break;
 200         case PKT3_SURFACE_SYNC:
 201                 si_dump_reg(f, R_0085F0_CP_COHER_CNTL, ib[1], ~0);
 202                 si_dump_reg(f, R_0085F4_CP_COHER_SIZE, ib[2], ~0);
 203                 si_dump_reg(f, R_0085F8_CP_COHER_BASE, ib[3], ~0);
 204                 print_named_value(f, "POLL_INTERVAL", ib[4], 16);
 205                 break;
 206         case PKT3_EVENT_WRITE:
 207                 si_dump_reg(f, R_028A90_VGT_EVENT_INITIATOR, ib[1],
 208                             S_028A90_EVENT_TYPE(~0));
 209                 print_named_value(f, "EVENT_INDEX", (ib[1] >> 8) & 0xf, 4);
 210                 print_named_value(f, "INV_L2", (ib[1] >> 20) & 0x1, 1);
 211                 if (count > 0) {
 212                         print_named_value(f, "ADDRESS_LO", ib[2], 32);
 213                         print_named_value(f, "ADDRESS_HI", ib[3], 16);
 214                 }
 215                 break;
 216         case PKT3_DRAW_INDEX_AUTO:
 217                 si_dump_reg(f, R_030930_VGT_NUM_INDICES, ib[1], ~0);
 218                 si_dump_reg(f, R_0287F0_VGT_DRAW_INITIATOR, ib[2], ~0);
 219                 break;
 220         case PKT3_DRAW_INDEX_2:
 221                 si_dump_reg(f, R_028A78_VGT_DMA_MAX_SIZE, ib[1], ~0);
 222                 si_dump_reg(f, R_0287E8_VGT_DMA_BASE, ib[2], ~0);
 223                 si_dump_reg(f, R_0287E4_VGT_DMA_BASE_HI, ib[3], ~0);
 224                 si_dump_reg(f, R_030930_VGT_NUM_INDICES, ib[4], ~0);
 225                 si_dump_reg(f, R_0287F0_VGT_DRAW_INITIATOR, ib[5], ~0);
 226                 break;
 227         case PKT3_INDEX_TYPE:
 228                 si_dump_reg(f, R_028A7C_VGT_DMA_INDEX_TYPE, ib[1], ~0);
 229                 break;
 230         case PKT3_NUM_INSTANCES:
 231                 si_dump_reg(f, R_030934_VGT_NUM_INSTANCES, ib[1], ~0);
 232                 break;
 233         case PKT3_WRITE_DATA:
 234                 si_dump_reg(f, R_370_CONTROL, ib[1], ~0);
 235                 si_dump_reg(f, R_371_DST_ADDR_LO, ib[2], ~0);
 236                 si_dump_reg(f, R_372_DST_ADDR_HI, ib[3], ~0);
 237                 for (i = 2; i < count; i++) {
 238                         print_spaces(f, INDENT_PKT);
 239                         fprintf(f, "0x%08x\n", ib[2+i]);
 240                 }
 241                 break;
 242         case PKT3_CP_DMA:
 243                 si_dump_reg(f, R_410_CP_DMA_WORD0, ib[1], ~0);
 244                 si_dump_reg(f, R_411_CP_DMA_WORD1, ib[2], ~0);
 245                 si_dump_reg(f, R_412_CP_DMA_WORD2, ib[3], ~0);
 246                 si_dump_reg(f, R_413_CP_DMA_WORD3, ib[4], ~0);
 247                 si_dump_reg(f, R_414_COMMAND, ib[5], ~0);
 248                 break;
 249         case PKT3_DMA_DATA:
 250                 si_dump_reg(f, R_500_DMA_DATA_WORD0, ib[1], ~0);
 251                 si_dump_reg(f, R_501_SRC_ADDR_LO, ib[2], ~0);
 252                 si_dump_reg(f, R_502_SRC_ADDR_HI, ib[3], ~0);
 253                 si_dump_reg(f, R_503_DST_ADDR_LO, ib[4], ~0);
 254                 si_dump_reg(f, R_504_DST_ADDR_HI, ib[5], ~0);
 255                 si_dump_reg(f, R_414_COMMAND, ib[6], ~0);
 256                 break;
 257         case PKT3_NOP:
 258                 if (ib[0] == 0xffff1000) {
 259                         count = -1; /* One dword NOP. */
 260                         break;
 261                 } else if (count == 0 && SI_IS_TRACE_POINT(ib[1])) {
 262                         unsigned packet_id = SI_GET_TRACE_POINT_ID(ib[1]);
 263
 264                         print_spaces(f, INDENT_PKT);
 265                         fprintf(f, COLOR_RED "Trace point ID: %u\n", packet_id);
 266
 267                         if (trace_id == -1)
 268                                 break; /* tracing was disabled */
 269
 270                         print_spaces(f, INDENT_PKT);
 271                         if (packet_id < trace_id)
 272                                 fprintf(f, COLOR_RED
 273                                         "This trace point was reached by the CP."
 274                                         COLOR_RESET "\n");
 275                         else if (packet_id == trace_id)
 276                                 fprintf(f, COLOR_RED
 277                                         "!!!!! This is the last trace point that "
 278                                         "was reached by the CP !!!!!"
 279                                         COLOR_RESET "\n");
 280                         else if (packet_id+1 == trace_id)
 281                                 fprintf(f, COLOR_RED
 282                                         "!!!!! This is the first trace point that "
 283                                         "was NOT been reached by the CP !!!!!"
 284                                         COLOR_RESET "\n");
 285                         else
 286                                 fprintf(f, COLOR_RED
 287                                         "!!!!! This trace point was NOT reached "
 288                                         "by the CP !!!!!"
 289                                         COLOR_RESET "\n");
 290                         break;
 291                 }
 292                 /* fall through, print all dwords */
 293         default:
 294                 for (i = 0; i < count+1; i++) {
 295                         print_spaces(f, INDENT_PKT);
 296                         fprintf(f, "0x%08x\n", ib[1+i]);
 297                 }
 298         }
 299
 300         ib += count + 2;
 301         *num_dw -= count + 2;
 302         return ib;
 303 }
 304
 305 /**
 306  * Parse and print an IB into a file.
 307  *
 308  * \param f             file
 309  * \param ib            IB
 310  * \param num_dw        size of the IB
 311  * \param chip_class    chip class
 312  * \param trace_id      the last trace ID that is known to have been reached
 313  *                      and executed by the CP, typically read from a buffer
 314  */
 315 static void si_parse_ib(FILE *f, uint32_t *ib, int num_dw, int trace_id)
 316 {
 317         fprintf(f, "------------------ IB begin ------------------\n");
 318
 319         while (num_dw > 0) {
 320                 unsigned type = PKT_TYPE_G(ib[0]);
 321
 322                 switch (type) {
 323                 case 3:
 324                         ib = si_parse_packet3(f, ib, &num_dw, trace_id);
 325                         break;
 326                 case 2:
 327                         /* type-2 nop */
 328                         if (ib[0] == 0x80000000) {
 329                                 fprintf(f, COLOR_GREEN "NOP (type 2)" COLOR_RESET "\n");
 330                                 ib++;
 331                                 break;
 332                         }
 333                         /* fall through */
 334                 default:
 335                         fprintf(f, "Unknown packet type %i\n", type);
 336                         return;
 337                 }
 338         }
 339
 340         fprintf(f, "------------------- IB end -------------------\n");
 341         if (num_dw < 0) {
 342                 printf("Packet ends after the end of IB.\n");
 343                 exit(0);
 344         }
 345 }
 346
 347 static void si_dump_mmapped_reg(struct si_context *sctx, FILE *f,
 348                                 unsigned offset)
 349 {
 350         struct radeon_winsys *ws = sctx->b.ws;
 351         uint32_t value;
 352
 353         if (ws->read_registers(ws, offset, 1, &value))
 354                 si_dump_reg(f, offset, value, ~0);
 355 }
 356
 357 static void si_dump_debug_registers(struct si_context *sctx, FILE *f)
 358 {
 359         if (sctx->screen->b.info.drm_major == 2 &&
 360             sctx->screen->b.info.drm_minor < 42)
 361                 return; /* no radeon support */
 362
 363         fprintf(f, "Memory-mapped registers:\n");
 364         si_dump_mmapped_reg(sctx, f, R_008010_GRBM_STATUS);
 365
 366         /* No other registers can be read on DRM < 3.1.0. */
 367         if (sctx->screen->b.info.drm_major < 3 ||
 368             sctx->screen->b.info.drm_minor < 1) {
 369                 fprintf(f, "\n");
 370                 return;
 371         }
 372
 373         si_dump_mmapped_reg(sctx, f, R_008008_GRBM_STATUS2);
 374         si_dump_mmapped_reg(sctx, f, R_008014_GRBM_STATUS_SE0);
 375         si_dump_mmapped_reg(sctx, f, R_008018_GRBM_STATUS_SE1);
 376         si_dump_mmapped_reg(sctx, f, R_008038_GRBM_STATUS_SE2);
 377         si_dump_mmapped_reg(sctx, f, R_00803C_GRBM_STATUS_SE3);
 378         si_dump_mmapped_reg(sctx, f, R_00D034_SDMA0_STATUS_REG);
 379         si_dump_mmapped_reg(sctx, f, R_00D834_SDMA1_STATUS_REG);
 380         si_dump_mmapped_reg(sctx, f, R_000E50_SRBM_STATUS);
 381         si_dump_mmapped_reg(sctx, f, R_000E4C_SRBM_STATUS2);
 382         si_dump_mmapped_reg(sctx, f, R_000E54_SRBM_STATUS3);
 383         si_dump_mmapped_reg(sctx, f, R_008680_CP_STAT);
 384         si_dump_mmapped_reg(sctx, f, R_008674_CP_STALLED_STAT1);
 385         si_dump_mmapped_reg(sctx, f, R_008678_CP_STALLED_STAT2);
 386         si_dump_mmapped_reg(sctx, f, R_008670_CP_STALLED_STAT3);
 387         si_dump_mmapped_reg(sctx, f, R_008210_CP_CPC_STATUS);
 388         si_dump_mmapped_reg(sctx, f, R_008214_CP_CPC_BUSY_STAT);
 389         si_dump_mmapped_reg(sctx, f, R_008218_CP_CPC_STALLED_STAT1);
 390         si_dump_mmapped_reg(sctx, f, R_00821C_CP_CPF_STATUS);
 391         si_dump_mmapped_reg(sctx, f, R_008220_CP_CPF_BUSY_STAT);
 392         si_dump_mmapped_reg(sctx, f, R_008224_CP_CPF_STALLED_STAT1);
 393         fprintf(f, "\n");
 394 }
 395
 396 static void si_dump_last_ib(struct si_context *sctx, FILE *f)
 397 {
 398         int last_trace_id = -1;
 399
 400         if (!sctx->last_ib)
 401                 return;
 402
 403         if (sctx->last_trace_buf) {
 404                 /* We are expecting that the ddebug pipe has already
 405                  * waited for the context, so this buffer should be idle.
 406                  * If the GPU is hung, there is no point in waiting for it.
 407                  */
 408                 uint32_t *map = sctx->b.ws->buffer_map(sctx->last_trace_buf->cs_buf,
 409                                                        NULL,
 410                                                        PIPE_TRANSFER_UNSYNCHRONIZED |
 411                                                        PIPE_TRANSFER_READ);
 412                 if (map)
 413                         last_trace_id = *map;
 414         }
 415
 416         si_parse_ib(f, sctx->last_ib, sctx->last_ib_dw_size,
 417                     last_trace_id);
 418         free(sctx->last_ib); /* dump only once */
 419         sctx->last_ib = NULL;
 420         r600_resource_reference(&sctx->last_trace_buf, NULL);
 421 }
 422
 423 static void si_dump_debug_state(struct pipe_context *ctx, FILE *f,
 424                                 unsigned flags)
 425 {
 426         struct si_context *sctx = (struct si_context*)ctx;
 427
 428         if (flags & PIPE_DEBUG_DEVICE_IS_HUNG)
 429                 si_dump_debug_registers(sctx, f);
 430
 431         si_dump_shader(sctx->vs_shader, "Vertex", f);
 432         si_dump_shader(sctx->tcs_shader, "Tessellation control", f);
 433         si_dump_shader(sctx->tes_shader, "Tessellation evaluation", f);
 434         si_dump_shader(sctx->gs_shader, "Geometry", f);
 435         si_dump_shader(sctx->ps_shader, "Fragment", f);
 436
 437         si_dump_last_ib(sctx, f);
 438
 439         fprintf(f, "Done.\n");
 440 }
 441
 442 static bool si_vm_fault_occured(struct si_context *sctx, uint32_t *out_addr)
 443 {
 444         char line[2000];
 445         unsigned sec, usec;
 446         int progress = 0;
 447         uint64_t timestamp = 0;
 448         bool fault = false;
 449
 450         FILE *p = popen("dmesg", "r");
 451         if (!p)
 452                 return false;
 453
 454         while (fgets(line, sizeof(line), p)) {
 455                 char *msg, len;
 456
 457                 /* Get the timestamp. */
 458                 if (sscanf(line, "[%u.%u]", &sec, &usec) != 2) {
 459                         assert(0);
 460                         continue;
 461                 }
 462                 timestamp = sec * 1000000llu + usec;
 463
 464                 /* If just updating the timestamp. */
 465                 if (!out_addr)
 466                         continue;
 467
 468                 /* Process messages only if the timestamp is newer. */
 469                 if (timestamp <= sctx->dmesg_timestamp)
 470                         continue;
 471
 472                 /* Only process the first VM fault. */
 473                 if (fault)
 474                         continue;
 475
 476                 /* Remove trailing \n */
 477                 len = strlen(line);
 478                 if (len && line[len-1] == '\n')
 479                         line[len-1] = 0;
 480
 481                 /* Get the message part. */
 482                 msg = strchr(line, ']');
 483                 if (!msg) {
 484                         assert(0);
 485                         continue;
 486                 }
 487                 msg++;
 488
 489                 switch (progress) {
 490                 case 0:
 491                         if (strstr(msg, "GPU fault detected:"))
 492                                 progress = 1;
 493                         break;
 494                 case 1:
 495                         msg = strstr(msg, "VM_CONTEXT1_PROTECTION_FAULT_ADDR");
 496                         if (msg) {
 497                                 msg = strstr(msg, "0x");
 498                                 if (msg) {
 499                                         msg += 2;
 500                                         if (sscanf(msg, "%X", out_addr) == 1)
 501                                                 fault = true;
 502                                 }
 503                         }
 504                         progress = 0;
 505                         break;
 506                 default:
 507                         progress = 0;
 508                 }
 509         }
 510         pclose(p);
 511
 512         if (timestamp > sctx->dmesg_timestamp)
 513                 sctx->dmesg_timestamp = timestamp;
 514         return fault;
 515 }
 516
 517 void si_check_vm_faults(struct si_context *sctx)
 518 {
 519         struct pipe_screen *screen = sctx->b.b.screen;
 520         FILE *f;
 521         uint32_t addr;
 522
 523         /* Use conservative timeout 800ms, after which we won't wait any
 524          * longer and assume the GPU is hung.
 525          */
 526         screen->fence_finish(screen, sctx->last_gfx_fence, 800*1000*1000);
 527
 528         if (!si_vm_fault_occured(sctx, &addr))
 529                 return;
 530
 531         f = dd_get_debug_file();
 532         if (!f)
 533                 return;
 534
 535         fprintf(f, "VM fault report.\n\n");
 536         fprintf(f, "Driver vendor: %s\n", screen->get_vendor(screen));
 537         fprintf(f, "Device vendor: %s\n", screen->get_device_vendor(screen));
 538         fprintf(f, "Device name: %s\n\n", screen->get_name(screen));
 539         fprintf(f, "Failing VM page: 0x%08x\n\n", addr);
 540
 541         si_dump_last_ib(sctx, f);
 542         fclose(f);
 543
 544         fprintf(stderr, "Detected a VM fault, exiting...\n");
 545         exit(0);
 546 }
 547
 548 void si_init_debug_functions(struct si_context *sctx)
 549 {
 550         sctx->b.b.dump_debug_state = si_dump_debug_state;
 551
 552         /* Set the initial dmesg timestamp for this context, so that
 553          * only new messages will be checked for VM faults.
 554          */
 555         if (sctx->screen->b.debug_flags & DBG_CHECK_VM)
 556                 si_vm_fault_occured(sctx, NULL);
 557 }