num_elements[i], f);
}
+struct si_shader_inst {
+ char text[160]; /* one disasm line */
+ unsigned offset; /* instruction offset */
+ unsigned size; /* instruction size = 4 or 8 */
+};
+
+/* Split a disassembly string into lines and add them to the array pointed
+ * to by "instructions". */
+static void si_add_split_disasm(const char *disasm,
+ uint64_t start_addr,
+ unsigned *num,
+ struct si_shader_inst *instructions)
+{
+ struct si_shader_inst *last_inst = *num ? &instructions[*num - 1] : NULL;
+ char *next;
+
+ while ((next = strchr(disasm, '\n'))) {
+ struct si_shader_inst *inst = &instructions[*num];
+ unsigned len = next - disasm;
+
+ assert(len < ARRAY_SIZE(inst->text));
+ memcpy(inst->text, disasm, len);
+ inst->text[len] = 0;
+ inst->offset = last_inst ? last_inst->offset + last_inst->size : 0;
+
+ const char *semicolon = strchr(disasm, ';');
+ assert(semicolon);
+ /* More than 16 chars after ";" means the instruction is 8 bytes long. */
+ inst->size = next - semicolon > 16 ? 8 : 4;
+
+ snprintf(inst->text + len, ARRAY_SIZE(inst->text) - len,
+ " [PC=0x%"PRIx64", off=%u, size=%u]",
+ start_addr + inst->offset, inst->offset, inst->size);
+
+ last_inst = inst;
+ (*num)++;
+ disasm = next + 1;
+ }
+}
+
+#define MAX_WAVES_PER_CHIP (64 * 40)
+
+struct si_wave_info {
+ unsigned se; /* shader engine */
+ unsigned sh; /* shader array */
+ unsigned cu; /* compute unit */
+ unsigned simd;
+ unsigned wave;
+ uint32_t status;
+ uint64_t pc; /* program counter */
+ uint32_t inst_dw0;
+ uint32_t inst_dw1;
+ uint64_t exec;
+ bool matched; /* whether the wave is used by a currently-bound shader */
+};
+
+static int compare_wave(const void *p1, const void *p2)
+{
+ struct si_wave_info *w1 = (struct si_wave_info *)p1;
+ struct si_wave_info *w2 = (struct si_wave_info *)p2;
+
+ /* Sort waves according to PC and then SE, SH, CU, etc. */
+ if (w1->pc < w2->pc)
+ return -1;
+ if (w1->pc > w2->pc)
+ return 1;
+ if (w1->se < w2->se)
+ return -1;
+ if (w1->se > w2->se)
+ return 1;
+ if (w1->sh < w2->sh)
+ return -1;
+ if (w1->sh > w2->sh)
+ return 1;
+ if (w1->cu < w2->cu)
+ return -1;
+ if (w1->cu > w2->cu)
+ return 1;
+ if (w1->simd < w2->simd)
+ return -1;
+ if (w1->simd > w2->simd)
+ return 1;
+ if (w1->wave < w2->wave)
+ return -1;
+ if (w1->wave > w2->wave)
+ return 1;
+
+ return 0;
+}
+
+/* Return wave information. "waves" should be a large enough array. */
+static unsigned si_get_wave_info(struct si_wave_info waves[MAX_WAVES_PER_CHIP])
+{
+ char line[2000];
+ unsigned num_waves = 0;
+
+ FILE *p = popen("umr -wa", "r");
+ if (!p)
+ return 0;
+
+ if (!fgets(line, sizeof(line), p) ||
+ strncmp(line, "SE", 2) != 0) {
+ pclose(p);
+ return 0;
+ }
+
+ while (fgets(line, sizeof(line), p)) {
+ struct si_wave_info *w;
+ uint32_t pc_hi, pc_lo, exec_hi, exec_lo;
+
+ assert(num_waves < MAX_WAVES_PER_CHIP);
+ w = &waves[num_waves];
+
+ if (sscanf(line, "%u %u %u %u %u %x %x %x %x %x %x %x",
+ &w->se, &w->sh, &w->cu, &w->simd, &w->wave,
+ &w->status, &pc_hi, &pc_lo, &w->inst_dw0,
+ &w->inst_dw1, &exec_hi, &exec_lo) == 12) {
+ w->pc = ((uint64_t)pc_hi << 32) | pc_lo;
+ w->exec = ((uint64_t)exec_hi << 32) | exec_lo;
+ w->matched = false;
+ num_waves++;
+ }
+ }
+
+ qsort(waves, num_waves, sizeof(struct si_wave_info), compare_wave);
+
+ pclose(p);
+ return num_waves;
+}
+
+/* If the shader is being executed, print its asm instructions, and annotate
+ * those that are being executed right now with information about waves that
+ * execute them. This is most useful during a GPU hang.
+ */
+static void si_print_annotated_shader(struct si_shader *shader,
+ struct si_wave_info *waves,
+ unsigned num_waves,
+ FILE *f)
+{
+ if (!shader || !shader->binary.disasm_string)
+ return;
+
+ uint64_t start_addr = shader->bo->gpu_address;
+ uint64_t end_addr = start_addr + shader->bo->b.b.width0;
+ unsigned i;
+
+ /* See if any wave executes the shader. */
+ for (i = 0; i < num_waves; i++) {
+ if (start_addr <= waves[i].pc && waves[i].pc <= end_addr)
+ break;
+ }
+ if (i == num_waves)
+ return; /* the shader is not being executed */
+
+ /* Remember the first found wave. The waves are sorted according to PC. */
+ waves = &waves[i];
+ num_waves -= i;
+
+ /* Get the list of instructions.
+ * Buffer size / 4 is the upper bound of the instruction count.
+ */
+ unsigned num_inst = 0;
+ struct si_shader_inst *instructions =
+ calloc(shader->bo->b.b.width0 / 4, sizeof(struct si_shader_inst));
+
+ if (shader->prolog) {
+ si_add_split_disasm(shader->prolog->binary.disasm_string,
+ start_addr, &num_inst, instructions);
+ }
+ si_add_split_disasm(shader->binary.disasm_string,
+ start_addr, &num_inst, instructions);
+ if (shader->epilog) {
+ si_add_split_disasm(shader->epilog->binary.disasm_string,
+ start_addr, &num_inst, instructions);
+ }
+
+ fprintf(f, COLOR_YELLOW "%s - annotated disassembly:" COLOR_RESET "\n",
+ si_get_shader_name(shader, shader->selector->type));
+
+ /* Print instructions with annotations. */
+ for (i = 0; i < num_inst; i++) {
+ struct si_shader_inst *inst = &instructions[i];
+
+ fprintf(f, "%s\n", inst->text);
+
+ /* Print which waves execute the instruction right now. */
+ while (num_waves && start_addr + inst->offset == waves->pc) {
+ fprintf(f,
+ " " COLOR_GREEN "^ SE%u SH%u CU%u "
+ "SIMD%u WAVE%u EXEC=%016"PRIx64 " ",
+ waves->se, waves->sh, waves->cu, waves->simd,
+ waves->wave, waves->exec);
+
+ if (inst->size == 4) {
+ fprintf(f, "INST32=%08X" COLOR_RESET "\n",
+ waves->inst_dw0);
+ } else {
+ fprintf(f, "INST64=%08X %08X" COLOR_RESET "\n",
+ waves->inst_dw0, waves->inst_dw1);
+ }
+
+ waves->matched = true;
+ waves = &waves[1];
+ num_waves--;
+ }
+ }
+
+ fprintf(f, "\n\n");
+ free(instructions);
+}
+
+static void si_dump_annotated_shaders(struct si_context *sctx, FILE *f)
+{
+ struct si_wave_info waves[MAX_WAVES_PER_CHIP];
+ unsigned num_waves = si_get_wave_info(waves);
+
+ fprintf(f, COLOR_CYAN "The number of active waves = %u" COLOR_RESET
+ "\n\n", num_waves);
+
+ si_print_annotated_shader(sctx->vs_shader.current, waves, num_waves, f);
+ si_print_annotated_shader(sctx->tcs_shader.current, waves, num_waves, f);
+ si_print_annotated_shader(sctx->tes_shader.current, waves, num_waves, f);
+ si_print_annotated_shader(sctx->gs_shader.current, waves, num_waves, f);
+ si_print_annotated_shader(sctx->ps_shader.current, waves, num_waves, f);
+
+ /* Print waves executing shaders that are not currently bound. */
+ unsigned i;
+ bool found = false;
+ for (i = 0; i < num_waves; i++) {
+ if (waves[i].matched)
+ continue;
+
+ if (!found) {
+ fprintf(f, COLOR_CYAN
+ "Waves not executing currently-bound shaders:"
+ COLOR_RESET "\n");
+ found = true;
+ }
+ fprintf(f, " SE%u SH%u CU%u SIMD%u WAVE%u EXEC=%016"PRIx64
+ " INST=%08X %08X PC=%"PRIx64"\n",
+ waves[i].se, waves[i].sh, waves[i].cu, waves[i].simd,
+ waves[i].wave, waves[i].exec, waves[i].inst_dw0,
+ waves[i].inst_dw1, waves[i].pc);
+ }
+ if (found)
+ fprintf(f, "\n\n");
+}
+
static void si_dump_command(const char *title, const char *command, FILE *f)
{
char line[2000];
si_dump_shader(sctx->screen, &sctx->ps_shader, f);
if (flags & PIPE_DUMP_DEVICE_STATUS_REGISTERS) {
- si_dump_command("Active waves", "umr -wa | column -t", f);
+ si_dump_annotated_shaders(sctx, f);
+ si_dump_command("Active waves (raw data)", "umr -wa | column -t", f);
si_dump_command("Wave information", "umr -O bits -wa", f);
}
projects / platform / upstream / mesa.git / commitdiff