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/*
* 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 <inttypes.h>
#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 >= GFX9);
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 == GFX9) {
/* 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));
radeon_set_uconfig_reg(cs, R_030CC8_SQ_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));
/* 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));
/* 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. */
radeon_set_uconfig_reg(cs, R_030CD8_SQ_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_TC_PERF_EN(1) | /* count SQTT traffic in TCC perf counters */
S_030CD8_MODE(1));
} else {
/* 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));
}
}
/* 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 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_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 >= GFX9);
/* 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 == GFX9) {
/* 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 */
/* Get the VA where the info struct is stored for this SE. */
uint64_t info_va = radv_thread_trace_get_info_va(device, se);
/* Copy back the info struct one DWORD at a time. */
for (unsigned i = 0; i < ARRAY_SIZE(gfx9_thread_trace_info_regs); 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, gfx9_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);
}
} else {
assert(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 */
/* Get the VA where the info struct is stored for this SE. */
uint64_t info_va = radv_thread_trace_get_info_va(device, se);
/* Copy back the info struct one DWORD at a time. */
for (unsigned i = 0; i < ARRAY_SIZE(gfx10_thread_trace_info_regs); 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, gfx10_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);
}
}
}
/* 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));
}
static void
radv_emit_spi_config_cntl(struct radv_device *device,
struct radeon_cmdbuf *cs, bool enable)
{
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);
}
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_BUFER_SIZE=<size_in_bytes>\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;
}
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