/* * Copyright © 2020 Valve Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include #include "radv_private.h" #include "radv_cs.h" #include "sid.h" #define SQTT_BUFFER_ALIGN_SHIFT 12 static uint64_t radv_thread_trace_get_info_offset(unsigned se) { return sizeof(struct radv_thread_trace_info) * se; } static uint64_t radv_thread_trace_get_data_offset(struct radv_device *device, unsigned se) { uint64_t data_offset; data_offset = align64(sizeof(struct radv_thread_trace_info) * 4, 1 << SQTT_BUFFER_ALIGN_SHIFT); data_offset += device->thread_trace_buffer_size * se; return data_offset; } static uint64_t radv_thread_trace_get_info_va(struct radv_device *device, unsigned se) { uint64_t va = radv_buffer_get_va(device->thread_trace_bo); return va + radv_thread_trace_get_info_offset(se); } static uint64_t radv_thread_trace_get_data_va(struct radv_device *device, unsigned se) { uint64_t va = radv_buffer_get_va(device->thread_trace_bo); return va + radv_thread_trace_get_data_offset(device, se); } static void radv_emit_thread_trace_start(struct radv_device *device, struct radeon_cmdbuf *cs, uint32_t queue_family_index) { uint32_t shifted_size = device->thread_trace_buffer_size >> SQTT_BUFFER_ALIGN_SHIFT; unsigned max_se = device->physical_device->rad_info.max_se; assert(device->physical_device->rad_info.chip_class >= GFX8); for (unsigned se = 0; se < max_se; se++) { uint64_t data_va = radv_thread_trace_get_data_va(device, se); uint64_t shifted_va = data_va >> SQTT_BUFFER_ALIGN_SHIFT; /* Target SEx and SH0. */ radeon_set_uconfig_reg(cs, R_030800_GRBM_GFX_INDEX, S_030800_SE_INDEX(se) | S_030800_SH_INDEX(0) | S_030800_INSTANCE_BROADCAST_WRITES(1)); if (device->physical_device->rad_info.chip_class == GFX10) { /* Order seems important for the following 2 registers. */ radeon_set_privileged_config_reg(cs, R_008D04_SQ_THREAD_TRACE_BUF0_SIZE, S_008D04_SIZE(shifted_size) | S_008D04_BASE_HI(shifted_va >> 32)); radeon_set_privileged_config_reg(cs, R_008D00_SQ_THREAD_TRACE_BUF0_BASE, S_008D00_BASE_LO(shifted_va)); radeon_set_privileged_config_reg(cs, R_008D14_SQ_THREAD_TRACE_MASK, S_008D14_WTYPE_INCLUDE(0x7f) | /* all shader stages */ S_008D14_SA_SEL(0) | S_008D14_WGP_SEL(0) | S_008D14_SIMD_SEL(0)); radeon_set_privileged_config_reg(cs, R_008D18_SQ_THREAD_TRACE_TOKEN_MASK, S_008D18_REG_INCLUDE(V_008D18_REG_INCLUDE_SQDEC | V_008D18_REG_INCLUDE_SHDEC | V_008D18_REG_INCLUDE_GFXUDEC | V_008D18_REG_INCLUDE_CONTEXT | V_008D18_REG_INCLUDE_COMP | V_008D18_REG_INCLUDE_CONTEXT | V_008D18_REG_INCLUDE_CONFIG) | S_008D18_TOKEN_EXCLUDE(V_008D18_TOKEN_EXCLUDE_PERF)); /* Should be emitted last (it enables thread traces). */ radeon_set_privileged_config_reg(cs, R_008D1C_SQ_THREAD_TRACE_CTRL, S_008D1C_MODE(1) | S_008D1C_HIWATER(5) | S_008D1C_UTIL_TIMER(1) | S_008D1C_RT_FREQ(2) | /* 4096 clk */ S_008D1C_DRAW_EVENT_EN(1) | S_008D1C_REG_STALL_EN(1) | S_008D1C_SPI_STALL_EN(1) | S_008D1C_SQ_STALL_EN(1) | S_008D1C_REG_DROP_ON_STALL(0)); } else { /* Order seems important for the following 4 registers. */ radeon_set_uconfig_reg(cs, R_030CDC_SQ_THREAD_TRACE_BASE2, S_030CDC_ADDR_HI(shifted_va >> 32)); radeon_set_uconfig_reg(cs, R_030CC0_SQ_THREAD_TRACE_BASE, S_030CC0_ADDR(shifted_va)); radeon_set_uconfig_reg(cs, R_030CC4_SQ_THREAD_TRACE_SIZE, S_030CC4_SIZE(shifted_size)); radeon_set_uconfig_reg(cs, R_030CD4_SQ_THREAD_TRACE_CTRL, S_030CD4_RESET_BUFFER(1)); uint32_t thread_trace_mask = S_030CC8_CU_SEL(2) | S_030CC8_SH_SEL(0) | S_030CC8_SIMD_EN(0xf) | S_030CC8_VM_ID_MASK(0) | S_030CC8_REG_STALL_EN(1) | S_030CC8_SPI_STALL_EN(1) | S_030CC8_SQ_STALL_EN(1); if (device->physical_device->rad_info.chip_class < GFX9) { thread_trace_mask |= S_030CC8_RANDOM_SEED(0xffff); } radeon_set_uconfig_reg(cs, R_030CC8_SQ_THREAD_TRACE_MASK, thread_trace_mask); /* Trace all tokens and registers. */ radeon_set_uconfig_reg(cs, R_030CCC_SQ_THREAD_TRACE_TOKEN_MASK, S_030CCC_TOKEN_MASK(0xbfff) | S_030CCC_REG_MASK(0xff) | S_030CCC_REG_DROP_ON_STALL(0)); /* Enable SQTT perf counters for all CUs. */ radeon_set_uconfig_reg(cs, R_030CD0_SQ_THREAD_TRACE_PERF_MASK, S_030CD0_SH0_MASK(0xffff) | S_030CD0_SH1_MASK(0xffff)); radeon_set_uconfig_reg(cs, R_030CE0_SQ_THREAD_TRACE_TOKEN_MASK2, S_030CE0_INST_MASK(0xffffffff)); radeon_set_uconfig_reg(cs, R_030CEC_SQ_THREAD_TRACE_HIWATER, S_030CEC_HIWATER(4)); if (device->physical_device->rad_info.chip_class == GFX9) { /* Reset thread trace status errors. */ radeon_set_uconfig_reg(cs, R_030CE8_SQ_THREAD_TRACE_STATUS, S_030CE8_UTC_ERROR(0)); } /* Enable the thread trace mode. */ uint32_t thread_trace_mode = S_030CD8_MASK_PS(1) | S_030CD8_MASK_VS(1) | S_030CD8_MASK_GS(1) | S_030CD8_MASK_ES(1) | S_030CD8_MASK_HS(1) | S_030CD8_MASK_LS(1) | S_030CD8_MASK_CS(1) | S_030CD8_AUTOFLUSH_EN(1) | /* periodically flush SQTT data to memory */ S_030CD8_MODE(1); if (device->physical_device->rad_info.chip_class == GFX9) { /* Count SQTT traffic in TCC perf counters. */ thread_trace_mode |= S_030CD8_TC_PERF_EN(1); } radeon_set_uconfig_reg(cs, R_030CD8_SQ_THREAD_TRACE_MODE, thread_trace_mode); } } /* Restore global broadcasting. */ radeon_set_uconfig_reg(cs, R_030800_GRBM_GFX_INDEX, S_030800_SE_BROADCAST_WRITES(1) | S_030800_SH_BROADCAST_WRITES(1) | S_030800_INSTANCE_BROADCAST_WRITES(1)); /* Start the thread trace with a different event based on the queue. */ if (queue_family_index == RADV_QUEUE_COMPUTE && device->physical_device->rad_info.chip_class >= GFX7) { radeon_set_sh_reg(cs, R_00B878_COMPUTE_THREAD_TRACE_ENABLE, S_00B878_THREAD_TRACE_ENABLE(1)); } else { radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 0, 0)); radeon_emit(cs, EVENT_TYPE(V_028A90_THREAD_TRACE_START) | EVENT_INDEX(0)); } } static const uint32_t gfx8_thread_trace_info_regs[] = { R_030CE4_SQ_THREAD_TRACE_WPTR, R_030CE8_SQ_THREAD_TRACE_STATUS, R_008E40_SQ_THREAD_TRACE_CNTR, }; static const uint32_t gfx9_thread_trace_info_regs[] = { R_030CE4_SQ_THREAD_TRACE_WPTR, R_030CE8_SQ_THREAD_TRACE_STATUS, R_030CF0_SQ_THREAD_TRACE_CNTR, }; static const uint32_t gfx10_thread_trace_info_regs[] = { R_008D10_SQ_THREAD_TRACE_WPTR, R_008D20_SQ_THREAD_TRACE_STATUS, R_008D24_SQ_THREAD_TRACE_DROPPED_CNTR, }; static void radv_copy_thread_trace_info_regs(struct radv_device *device, struct radeon_cmdbuf *cs, unsigned se_index) { const uint32_t *thread_trace_info_regs = NULL; switch (device->physical_device->rad_info.chip_class) { case GFX10: thread_trace_info_regs = gfx10_thread_trace_info_regs; break; case GFX9: thread_trace_info_regs = gfx9_thread_trace_info_regs; break; case GFX8: thread_trace_info_regs = gfx8_thread_trace_info_regs; break; default: unreachable("Unsupported chip_class"); } /* Get the VA where the info struct is stored for this SE. */ uint64_t info_va = radv_thread_trace_get_info_va(device, se_index); /* Copy back the info struct one DWORD at a time. */ for (unsigned i = 0; i < 3; i++) { radeon_emit(cs, PKT3(PKT3_COPY_DATA, 4, 0)); radeon_emit(cs, COPY_DATA_SRC_SEL(COPY_DATA_PERF) | COPY_DATA_DST_SEL(COPY_DATA_TC_L2) | COPY_DATA_WR_CONFIRM); radeon_emit(cs, thread_trace_info_regs[i] >> 2); radeon_emit(cs, 0); /* unused */ radeon_emit(cs, (info_va + i * 4)); radeon_emit(cs, (info_va + i * 4) >> 32); } } static void radv_emit_thread_trace_stop(struct radv_device *device, struct radeon_cmdbuf *cs, uint32_t queue_family_index) { unsigned max_se = device->physical_device->rad_info.max_se; assert(device->physical_device->rad_info.chip_class >= GFX8); /* Stop the thread trace with a different event based on the queue. */ if (queue_family_index == RADV_QUEUE_COMPUTE && device->physical_device->rad_info.chip_class >= GFX7) { radeon_set_sh_reg(cs, R_00B878_COMPUTE_THREAD_TRACE_ENABLE, S_00B878_THREAD_TRACE_ENABLE(0)); } else { radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 0, 0)); radeon_emit(cs, EVENT_TYPE(V_028A90_THREAD_TRACE_STOP) | EVENT_INDEX(0)); } radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 0, 0)); radeon_emit(cs, EVENT_TYPE(V_028A90_THREAD_TRACE_FINISH) | EVENT_INDEX(0)); for (unsigned se = 0; se < max_se; se++) { /* Target SEi and SH0. */ radeon_set_uconfig_reg(cs, R_030800_GRBM_GFX_INDEX, S_030800_SE_INDEX(se) | S_030800_SH_INDEX(0) | S_030800_INSTANCE_BROADCAST_WRITES(1)); if (device->physical_device->rad_info.chip_class == GFX10) { /* Make sure to wait for the trace buffer. */ radeon_emit(cs, PKT3(PKT3_WAIT_REG_MEM, 5, 0)); radeon_emit(cs, WAIT_REG_MEM_NOT_EQUAL); /* wait until the register is equal to the reference value */ radeon_emit(cs, R_008D20_SQ_THREAD_TRACE_STATUS >> 2); /* register */ radeon_emit(cs, 0); radeon_emit(cs, 0); /* reference value */ radeon_emit(cs, S_008D20_FINISH_DONE(1)); /* mask */ radeon_emit(cs, 4); /* poll interval */ /* Disable the thread trace mode. */ radeon_set_privileged_config_reg(cs, R_008D1C_SQ_THREAD_TRACE_CTRL, S_008D1C_MODE(0)); /* Wait for thread trace completion. */ radeon_emit(cs, PKT3(PKT3_WAIT_REG_MEM, 5, 0)); radeon_emit(cs, WAIT_REG_MEM_EQUAL); /* wait until the register is equal to the reference value */ radeon_emit(cs, R_008D20_SQ_THREAD_TRACE_STATUS >> 2); /* register */ radeon_emit(cs, 0); radeon_emit(cs, 0); /* reference value */ radeon_emit(cs, S_008D20_BUSY(1)); /* mask */ radeon_emit(cs, 4); /* poll interval */ } else { /* Disable the thread trace mode. */ radeon_set_uconfig_reg(cs, R_030CD8_SQ_THREAD_TRACE_MODE, S_030CD8_MODE(0)); /* Wait for thread trace completion. */ radeon_emit(cs, PKT3(PKT3_WAIT_REG_MEM, 5, 0)); radeon_emit(cs, WAIT_REG_MEM_EQUAL); /* wait until the register is equal to the reference value */ radeon_emit(cs, R_030CE8_SQ_THREAD_TRACE_STATUS >> 2); /* register */ radeon_emit(cs, 0); radeon_emit(cs, 0); /* reference value */ radeon_emit(cs, S_030CE8_BUSY(1)); /* mask */ radeon_emit(cs, 4); /* poll interval */ } radv_copy_thread_trace_info_regs(device, cs, se); } /* Restore global broadcasting. */ radeon_set_uconfig_reg(cs, R_030800_GRBM_GFX_INDEX, S_030800_SE_BROADCAST_WRITES(1) | S_030800_SH_BROADCAST_WRITES(1) | S_030800_INSTANCE_BROADCAST_WRITES(1)); } void radv_emit_thread_trace_userdata(struct radeon_cmdbuf *cs, const void *data, uint32_t num_dwords) { const uint32_t *dwords = (uint32_t *)data; while (num_dwords > 0) { uint32_t count = MIN2(num_dwords, 2); radeon_set_uconfig_reg_seq(cs, R_030D08_SQ_THREAD_TRACE_USERDATA_2, count); radeon_emit_array(cs, dwords, count); dwords += count; num_dwords -= count; } } static void radv_emit_spi_config_cntl(struct radv_device *device, struct radeon_cmdbuf *cs, bool enable) { if (device->physical_device->rad_info.chip_class >= GFX9) { uint32_t spi_config_cntl = S_031100_GPR_WRITE_PRIORITY(0x2c688) | S_031100_EXP_PRIORITY_ORDER(3) | S_031100_ENABLE_SQG_TOP_EVENTS(enable) | S_031100_ENABLE_SQG_BOP_EVENTS(enable); if (device->physical_device->rad_info.chip_class == GFX10) spi_config_cntl |= S_031100_PS_PKR_PRIORITY_CNTL(3); radeon_set_uconfig_reg(cs, R_031100_SPI_CONFIG_CNTL, spi_config_cntl); } else { /* SPI_CONFIG_CNTL is a protected register on GFX6-GFX8. */ radeon_set_privileged_config_reg(cs, R_009100_SPI_CONFIG_CNTL, S_009100_ENABLE_SQG_TOP_EVENTS(enable) | S_009100_ENABLE_SQG_BOP_EVENTS(enable)); } } static void radv_emit_wait_for_idle(struct radv_device *device, struct radeon_cmdbuf *cs, int family) { si_cs_emit_cache_flush(cs, device->physical_device->rad_info.chip_class, NULL, 0, family == RING_COMPUTE && device->physical_device->rad_info.chip_class >= GFX7, (family == RADV_QUEUE_COMPUTE ? RADV_CMD_FLAG_CS_PARTIAL_FLUSH : (RADV_CMD_FLAG_CS_PARTIAL_FLUSH | RADV_CMD_FLAG_PS_PARTIAL_FLUSH)) | RADV_CMD_FLAG_INV_ICACHE | RADV_CMD_FLAG_INV_SCACHE | RADV_CMD_FLAG_INV_VCACHE | RADV_CMD_FLAG_INV_L2, 0); } static void radv_thread_trace_init_cs(struct radv_device *device) { struct radeon_winsys *ws = device->ws; /* Thread trace start CS. */ for (int family = 0; family < 2; ++family) { device->thread_trace_start_cs[family] = ws->cs_create(ws, family); switch (family) { case RADV_QUEUE_GENERAL: radeon_emit(device->thread_trace_start_cs[family], PKT3(PKT3_CONTEXT_CONTROL, 1, 0)); radeon_emit(device->thread_trace_start_cs[family], CONTEXT_CONTROL_LOAD_ENABLE(1)); radeon_emit(device->thread_trace_start_cs[family], CONTEXT_CONTROL_SHADOW_ENABLE(1)); break; case RADV_QUEUE_COMPUTE: radeon_emit(device->thread_trace_start_cs[family], PKT3(PKT3_NOP, 0, 0)); radeon_emit(device->thread_trace_start_cs[family], 0); break; } radv_cs_add_buffer(ws, device->thread_trace_start_cs[family], device->thread_trace_bo); /* Make sure to wait-for-idle before starting SQTT. */ radv_emit_wait_for_idle(device, device->thread_trace_start_cs[family], family); /* Enable SQG events that collects thread trace data. */ radv_emit_spi_config_cntl(device, device->thread_trace_start_cs[family], true); radv_emit_thread_trace_start(device, device->thread_trace_start_cs[family], family); ws->cs_finalize(device->thread_trace_start_cs[family]); } /* Thread trace stop CS. */ for (int family = 0; family < 2; ++family) { device->thread_trace_stop_cs[family] = ws->cs_create(ws, family); switch (family) { case RADV_QUEUE_GENERAL: radeon_emit(device->thread_trace_stop_cs[family], PKT3(PKT3_CONTEXT_CONTROL, 1, 0)); radeon_emit(device->thread_trace_stop_cs[family], CONTEXT_CONTROL_LOAD_ENABLE(1)); radeon_emit(device->thread_trace_stop_cs[family], CONTEXT_CONTROL_SHADOW_ENABLE(1)); break; case RADV_QUEUE_COMPUTE: radeon_emit(device->thread_trace_stop_cs[family], PKT3(PKT3_NOP, 0, 0)); radeon_emit(device->thread_trace_stop_cs[family], 0); break; } radv_cs_add_buffer(ws, device->thread_trace_stop_cs[family], device->thread_trace_bo); /* Make sure to wait-for-idle before stopping SQTT. */ radv_emit_wait_for_idle(device, device->thread_trace_stop_cs[family], family); radv_emit_thread_trace_stop(device, device->thread_trace_stop_cs[family], family); /* Restore previous state by disabling SQG events. */ radv_emit_spi_config_cntl(device, device->thread_trace_stop_cs[family], false); ws->cs_finalize(device->thread_trace_stop_cs[family]); } } static bool radv_thread_trace_init_bo(struct radv_device *device) { struct radeon_winsys *ws = device->ws; uint64_t size; /* Compute total size of the thread trace BO for 4 SEs. */ size = align64(sizeof(struct radv_thread_trace_info) * 4, 1 << SQTT_BUFFER_ALIGN_SHIFT); size += device->thread_trace_buffer_size * 4; device->thread_trace_bo = ws->buffer_create(ws, size, 4096, RADEON_DOMAIN_VRAM, RADEON_FLAG_CPU_ACCESS | RADEON_FLAG_NO_INTERPROCESS_SHARING | RADEON_FLAG_ZERO_VRAM, RADV_BO_PRIORITY_SCRATCH); if (!device->thread_trace_bo) return false; device->thread_trace_ptr = ws->buffer_map(device->thread_trace_bo); if (!device->thread_trace_ptr) return false; return true; } bool radv_thread_trace_init(struct radv_device *device) { if (!radv_thread_trace_init_bo(device)) return false; radv_thread_trace_init_cs(device); return true; } void radv_thread_trace_finish(struct radv_device *device) { struct radeon_winsys *ws = device->ws; if (unlikely(device->thread_trace_bo)) ws->buffer_destroy(device->thread_trace_bo); for (unsigned i = 0; i < 2; i++) { if (device->thread_trace_start_cs[i]) ws->cs_destroy(device->thread_trace_start_cs[i]); if (device->thread_trace_stop_cs[i]) ws->cs_destroy(device->thread_trace_stop_cs[i]); } } bool radv_begin_thread_trace(struct radv_queue *queue) { int family = queue->queue_family_index; struct radeon_cmdbuf *cs = queue->device->thread_trace_start_cs[family]; return radv_queue_internal_submit(queue, cs); } bool radv_end_thread_trace(struct radv_queue *queue) { int family = queue->queue_family_index; struct radeon_cmdbuf *cs = queue->device->thread_trace_stop_cs[family]; return radv_queue_internal_submit(queue, cs); } static bool radv_is_thread_trace_complete(struct radv_device *device, const struct radv_thread_trace_info *info) { if (device->physical_device->rad_info.chip_class == GFX10) { /* GFX10 doesn't have THREAD_TRACE_CNTR but it reports the * number of dropped bytes for all SEs via * THREAD_TRACE_DROPPED_CNTR. */ return info->gfx10_dropped_cntr == 0; } /* Otherwise, compare the current thread trace offset with the number * of written bytes. */ return info->cur_offset == info->gfx9_write_counter; } static uint32_t radv_get_expected_buffer_size(struct radv_device *device, const struct radv_thread_trace_info *info) { if (device->physical_device->rad_info.chip_class == GFX10) { uint32_t dropped_cntr_per_se = info->gfx10_dropped_cntr / device->physical_device->rad_info.max_se; return ((info->cur_offset * 32) + dropped_cntr_per_se) / 1024; } return (info->gfx9_write_counter * 32) / 1024; } bool radv_get_thread_trace(struct radv_queue *queue, struct radv_thread_trace *thread_trace) { struct radv_device *device = queue->device; unsigned max_se = device->physical_device->rad_info.max_se; void *thread_trace_ptr = device->thread_trace_ptr; memset(thread_trace, 0, sizeof(*thread_trace)); thread_trace->num_traces = max_se; for (unsigned se = 0; se < max_se; se++) { uint64_t info_offset = radv_thread_trace_get_info_offset(se); uint64_t data_offset = radv_thread_trace_get_data_offset(device, se); void *info_ptr = thread_trace_ptr + info_offset; void *data_ptr = thread_trace_ptr + data_offset; struct radv_thread_trace_info *info = (struct radv_thread_trace_info *)info_ptr; struct radv_thread_trace_se thread_trace_se = {}; if (!radv_is_thread_trace_complete(device, info)) { uint32_t expected_size = radv_get_expected_buffer_size(device, info); uint32_t available_size = (info->cur_offset * 32) / 1024; fprintf(stderr, "Failed to get the thread trace " "because the buffer is too small. The " "hardware needs %d KB but the " "buffer size is %d KB.\n", expected_size, available_size); fprintf(stderr, "Please update the buffer size with " "RADV_THREAD_TRACE_BUFFER_SIZE=\n"); return false; } thread_trace_se.data_ptr = data_ptr; thread_trace_se.info = *info; thread_trace_se.shader_engine = se; thread_trace_se.compute_unit = 0; thread_trace->traces[se] = thread_trace_se; } return true; }