/*
* Copyright 2013 Advanced Micro Devices, Inc.
* All Rights Reserved.
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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 "si_compute.h"
#include "ac_rtld.h"
#include "amd_kernel_code_t.h"
#include "nir/tgsi_to_nir.h"
#include "si_build_pm4.h"
#include "util/u_async_debug.h"
#include "util/u_memory.h"
#include "util/u_upload_mgr.h"
#define COMPUTE_DBG(sscreen, fmt, args...) \
do { \
if ((sscreen->debug_flags & DBG(COMPUTE))) \
fprintf(stderr, fmt, ##args); \
} while (0);
struct dispatch_packet {
uint16_t header;
uint16_t setup;
uint16_t workgroup_size_x;
uint16_t workgroup_size_y;
uint16_t workgroup_size_z;
uint16_t reserved0;
uint32_t grid_size_x;
uint32_t grid_size_y;
uint32_t grid_size_z;
uint32_t private_segment_size;
uint32_t group_segment_size;
uint64_t kernel_object;
uint64_t kernarg_address;
uint64_t reserved2;
};
static const amd_kernel_code_t *si_compute_get_code_object(const struct si_compute *program,
uint64_t symbol_offset)
{
const struct si_shader_selector *sel = &program->sel;
if (program->ir_type != PIPE_SHADER_IR_NATIVE)
return NULL;
struct ac_rtld_binary rtld;
if (!ac_rtld_open(&rtld,
(struct ac_rtld_open_info){.info = &sel->screen->info,
.shader_type = MESA_SHADER_COMPUTE,
.wave_size = sel->screen->compute_wave_size,
.num_parts = 1,
.elf_ptrs = &program->shader.binary.elf_buffer,
.elf_sizes = &program->shader.binary.elf_size}))
return NULL;
const amd_kernel_code_t *result = NULL;
const char *text;
size_t size;
if (!ac_rtld_get_section_by_name(&rtld, ".text", &text, &size))
goto out;
if (symbol_offset + sizeof(amd_kernel_code_t) > size)
goto out;
result = (const amd_kernel_code_t *)(text + symbol_offset);
out:
ac_rtld_close(&rtld);
return result;
}
static void code_object_to_config(const amd_kernel_code_t *code_object,
struct ac_shader_config *out_config)
{
uint32_t rsrc1 = code_object->compute_pgm_resource_registers;
uint32_t rsrc2 = code_object->compute_pgm_resource_registers >> 32;
out_config->num_sgprs = code_object->wavefront_sgpr_count;
out_config->num_vgprs = code_object->workitem_vgpr_count;
out_config->float_mode = G_00B028_FLOAT_MODE(rsrc1);
out_config->rsrc1 = rsrc1;
out_config->lds_size = MAX2(out_config->lds_size, G_00B84C_LDS_SIZE(rsrc2));
out_config->rsrc2 = rsrc2;
out_config->scratch_bytes_per_wave =
align(code_object->workitem_private_segment_byte_size * 64, 1024);
}
/* Asynchronous compute shader compilation. */
static void si_create_compute_state_async(void *job, void *gdata, int thread_index)
{
struct si_compute *program = (struct si_compute *)job;
struct si_shader_selector *sel = &program->sel;
struct si_shader *shader = &program->shader;
struct ac_llvm_compiler *compiler;
struct pipe_debug_callback *debug = &sel->compiler_ctx_state.debug;
struct si_screen *sscreen = sel->screen;
assert(!debug->debug_message || debug->async);
assert(thread_index >= 0);
assert(thread_index < ARRAY_SIZE(sscreen->compiler));
compiler = &sscreen->compiler[thread_index];
if (!compiler->passes)
si_init_compiler(sscreen, compiler);
assert(program->ir_type == PIPE_SHADER_IR_NIR);
si_nir_scan_shader(sel->nir, &sel->info);
si_get_active_slot_masks(&sel->info, &sel->active_const_and_shader_buffers,
&sel->active_samplers_and_images);
program->shader.is_monolithic = true;
/* Variable block sizes need 10 bits (1 + log2(SI_MAX_VARIABLE_THREADS_PER_BLOCK)) per dim.
* We pack them into a single user SGPR.
*/
unsigned user_sgprs = SI_NUM_RESOURCE_SGPRS + (sel->info.uses_grid_size ? 3 : 0) +
(sel->info.uses_variable_block_size ? 1 : 0) +
sel->info.base.cs.user_data_components_amd;
/* Fast path for compute shaders - some descriptors passed via user SGPRs. */
/* Shader buffers in user SGPRs. */
for (unsigned i = 0; i < MIN2(3, sel->info.base.num_ssbos) && user_sgprs <= 12; i++) {
user_sgprs = align(user_sgprs, 4);
if (i == 0)
sel->cs_shaderbufs_sgpr_index = user_sgprs;
user_sgprs += 4;
sel->cs_num_shaderbufs_in_user_sgprs++;
}
/* Images in user SGPRs. */
unsigned non_msaa_images = u_bit_consecutive(0, sel->info.base.num_images) &
~sel->info.base.msaa_images;
for (unsigned i = 0; i < 3 && non_msaa_images & (1 << i); i++) {
unsigned num_sgprs = sel->info.base.image_buffers & (1 << i) ? 4 : 8;
if (align(user_sgprs, num_sgprs) + num_sgprs > 16)
break;
user_sgprs = align(user_sgprs, num_sgprs);
if (i == 0)
sel->cs_images_sgpr_index = user_sgprs;
user_sgprs += num_sgprs;
sel->cs_num_images_in_user_sgprs++;
}
sel->cs_images_num_sgprs = user_sgprs - sel->cs_images_sgpr_index;
assert(user_sgprs <= 16);
unsigned char ir_sha1_cache_key[20];
si_get_ir_cache_key(sel, false, false, ir_sha1_cache_key);
/* Try to load the shader from the shader cache. */
simple_mtx_lock(&sscreen->shader_cache_mutex);
if (si_shader_cache_load_shader(sscreen, ir_sha1_cache_key, shader)) {
simple_mtx_unlock(&sscreen->shader_cache_mutex);
si_shader_dump_stats_for_shader_db(sscreen, shader, debug);
si_shader_dump(sscreen, shader, debug, stderr, true);
if (!si_shader_binary_upload(sscreen, shader, 0))
program->shader.compilation_failed = true;
} else {
simple_mtx_unlock(&sscreen->shader_cache_mutex);
if (!si_create_shader_variant(sscreen, compiler, &program->shader, debug)) {
program->shader.compilation_failed = true;
return;
}
bool scratch_enabled = shader->config.scratch_bytes_per_wave > 0;
shader->config.rsrc1 = S_00B848_VGPRS((shader->config.num_vgprs - 1) /
((sscreen->compute_wave_size == 32 ||
sscreen->info.wave64_vgpr_alloc_granularity == 8) ? 8 : 4)) |
S_00B848_DX10_CLAMP(1) |
S_00B848_MEM_ORDERED(si_shader_mem_ordered(shader)) |
S_00B848_WGP_MODE(sscreen->info.chip_class >= GFX10) |
S_00B848_FLOAT_MODE(shader->config.float_mode);
if (sscreen->info.chip_class < GFX10) {
shader->config.rsrc1 |= S_00B848_SGPRS((shader->config.num_sgprs - 1) / 8);
}
shader->config.rsrc2 = S_00B84C_USER_SGPR(user_sgprs) | S_00B84C_SCRATCH_EN(scratch_enabled) |
S_00B84C_TGID_X_EN(sel->info.uses_block_id[0]) |
S_00B84C_TGID_Y_EN(sel->info.uses_block_id[1]) |
S_00B84C_TGID_Z_EN(sel->info.uses_block_id[2]) |
S_00B84C_TG_SIZE_EN(sel->info.uses_subgroup_info) |
S_00B84C_TIDIG_COMP_CNT(sel->info.uses_thread_id[2]
? 2
: sel->info.uses_thread_id[1] ? 1 : 0) |
S_00B84C_LDS_SIZE(shader->config.lds_size);
simple_mtx_lock(&sscreen->shader_cache_mutex);
si_shader_cache_insert_shader(sscreen, ir_sha1_cache_key, shader, true);
simple_mtx_unlock(&sscreen->shader_cache_mutex);
}
ralloc_free(sel->nir);
sel->nir = NULL;
}
static void *si_create_compute_state(struct pipe_context *ctx, const struct pipe_compute_state *cso)
{
struct si_context *sctx = (struct si_context *)ctx;
struct si_screen *sscreen = (struct si_screen *)ctx->screen;
struct si_compute *program = CALLOC_STRUCT(si_compute);
struct si_shader_selector *sel = &program->sel;
pipe_reference_init(&sel->base.reference, 1);
sel->info.stage = MESA_SHADER_COMPUTE;
sel->screen = sscreen;
sel->const_and_shader_buf_descriptors_index =
si_const_and_shader_buffer_descriptors_idx(PIPE_SHADER_COMPUTE);
sel->sampler_and_images_descriptors_index =
si_sampler_and_image_descriptors_idx(PIPE_SHADER_COMPUTE);
sel->info.base.shared_size = cso->req_local_mem;
program->shader.selector = &program->sel;
program->ir_type = cso->ir_type;
program->private_size = cso->req_private_mem;
program->input_size = cso->req_input_mem;
if (cso->ir_type != PIPE_SHADER_IR_NATIVE) {
if (cso->ir_type == PIPE_SHADER_IR_TGSI) {
program->ir_type = PIPE_SHADER_IR_NIR;
sel->nir = tgsi_to_nir(cso->prog, ctx->screen, true);
} else {
assert(cso->ir_type == PIPE_SHADER_IR_NIR);
sel->nir = (struct nir_shader *)cso->prog;
}
sel->compiler_ctx_state.debug = sctx->debug;
sel->compiler_ctx_state.is_debug_context = sctx->is_debug;
p_atomic_inc(&sscreen->num_shaders_created);
si_schedule_initial_compile(sctx, MESA_SHADER_COMPUTE, &sel->ready, &sel->compiler_ctx_state,
program, si_create_compute_state_async);
} else {
const struct pipe_binary_program_header *header;
header = cso->prog;
program->shader.binary.elf_size = header->num_bytes;
program->shader.binary.elf_buffer = malloc(header->num_bytes);
if (!program->shader.binary.elf_buffer) {
FREE(program);
return NULL;
}
memcpy((void *)program->shader.binary.elf_buffer, header->blob, header->num_bytes);
const amd_kernel_code_t *code_object = si_compute_get_code_object(program, 0);
code_object_to_config(code_object, &program->shader.config);
si_shader_dump(sctx->screen, &program->shader, &sctx->debug, stderr, true);
if (!si_shader_binary_upload(sctx->screen, &program->shader, 0)) {
fprintf(stderr, "LLVM failed to upload shader\n");
free((void *)program->shader.binary.elf_buffer);
FREE(program);
return NULL;
}
}
return program;
}
static void si_bind_compute_state(struct pipe_context *ctx, void *state)
{
struct si_context *sctx = (struct si_context *)ctx;
struct si_compute *program = (struct si_compute *)state;
struct si_shader_selector *sel = &program->sel;
sctx->cs_shader_state.program = program;
if (!program)
return;
/* Wait because we need active slot usage masks. */
if (program->ir_type != PIPE_SHADER_IR_NATIVE)
util_queue_fence_wait(&sel->ready);
si_set_active_descriptors(sctx,
SI_DESCS_FIRST_COMPUTE + SI_SHADER_DESCS_CONST_AND_SHADER_BUFFERS,
sel->active_const_and_shader_buffers);
si_set_active_descriptors(sctx, SI_DESCS_FIRST_COMPUTE + SI_SHADER_DESCS_SAMPLERS_AND_IMAGES,
sel->active_samplers_and_images);
sctx->compute_shaderbuf_sgprs_dirty = true;
sctx->compute_image_sgprs_dirty = true;
if (unlikely((sctx->screen->debug_flags & DBG(SQTT)) && sctx->thread_trace)) {
uint32_t pipeline_code_hash = _mesa_hash_data_with_seed(
program->shader.binary.elf_buffer,
program->shader.binary.elf_size,
0);
uint64_t base_address = program->shader.bo->gpu_address;
struct ac_thread_trace_data *thread_trace_data = sctx->thread_trace;
if (!si_sqtt_pipeline_is_registered(thread_trace_data, pipeline_code_hash)) {
si_sqtt_register_pipeline(sctx, pipeline_code_hash, base_address, true);
}
si_sqtt_describe_pipeline_bind(sctx, pipeline_code_hash, 1);
}
}
static void si_set_global_binding(struct pipe_context *ctx, unsigned first, unsigned n,
struct pipe_resource **resources, uint32_t **handles)
{
unsigned i;
struct si_context *sctx = (struct si_context *)ctx;
struct si_compute *program = sctx->cs_shader_state.program;
if (first + n > program->max_global_buffers) {
unsigned old_max = program->max_global_buffers;
program->max_global_buffers = first + n;
program->global_buffers = realloc(
program->global_buffers, program->max_global_buffers * sizeof(program->global_buffers[0]));
if (!program->global_buffers) {
fprintf(stderr, "radeonsi: failed to allocate compute global_buffers\n");
return;
}
memset(&program->global_buffers[old_max], 0,
(program->max_global_buffers - old_max) * sizeof(program->global_buffers[0]));
}
if (!resources) {
for (i = 0; i < n; i++) {
pipe_resource_reference(&program->global_buffers[first + i], NULL);
}
return;
}
for (i = 0; i < n; i++) {
uint64_t va;
uint32_t offset;
pipe_resource_reference(&program->global_buffers[first + i], resources[i]);
va = si_resource(resources[i])->gpu_address;
offset = util_le32_to_cpu(*handles[i]);
va += offset;
va = util_cpu_to_le64(va);
memcpy(handles[i], &va, sizeof(va));
}
}
void si_emit_initial_compute_regs(struct si_context *sctx, struct radeon_cmdbuf *cs)
{
radeon_begin(cs);
radeon_set_sh_reg(R_00B834_COMPUTE_PGM_HI,
S_00B834_DATA(sctx->screen->info.address32_hi >> 8));
radeon_set_sh_reg_seq(R_00B858_COMPUTE_STATIC_THREAD_MGMT_SE0, 2);
/* R_00B858_COMPUTE_STATIC_THREAD_MGMT_SE0 / SE1,
* renamed COMPUTE_DESTINATION_EN_SEn on gfx10. */
radeon_emit(S_00B858_SH0_CU_EN(0xffff) | S_00B858_SH1_CU_EN(0xffff));
radeon_emit(S_00B858_SH0_CU_EN(0xffff) | S_00B858_SH1_CU_EN(0xffff));
if (sctx->chip_class == GFX6) {
/* This register has been moved to R_00CD20_COMPUTE_MAX_WAVE_ID
* and is now per pipe, so it should be handled in the
* kernel if we want to use something other than the default value.
*
* TODO: This should be:
* (number of compute units) * 4 * (waves per simd) - 1
*/
radeon_set_sh_reg(R_00B82C_COMPUTE_MAX_WAVE_ID, 0x190 /* Default value */);
if (sctx->screen->info.si_TA_CS_BC_BASE_ADDR_allowed) {
uint64_t bc_va = sctx->border_color_buffer->gpu_address;
radeon_set_config_reg(R_00950C_TA_CS_BC_BASE_ADDR, bc_va >> 8);
}
}
if (sctx->chip_class >= GFX7) {
/* Also set R_00B858_COMPUTE_STATIC_THREAD_MGMT_SE2 / SE3 */
radeon_set_sh_reg_seq(R_00B864_COMPUTE_STATIC_THREAD_MGMT_SE2, 2);
radeon_emit(S_00B858_SH0_CU_EN(0xffff) | S_00B858_SH1_CU_EN(0xffff));
radeon_emit(S_00B858_SH0_CU_EN(0xffff) | S_00B858_SH1_CU_EN(0xffff));
/* Disable profiling on compute queues. */
if (cs != &sctx->gfx_cs || !sctx->screen->info.has_graphics) {
radeon_set_sh_reg(R_00B82C_COMPUTE_PERFCOUNT_ENABLE, 0);
radeon_set_sh_reg(R_00B878_COMPUTE_THREAD_TRACE_ENABLE, 0);
}
/* Set the pointer to border colors. */
/* Aldebaran doesn't support border colors. */
if (sctx->border_color_buffer) {
uint64_t bc_va = sctx->border_color_buffer->gpu_address;
radeon_set_uconfig_reg_seq(R_030E00_TA_CS_BC_BASE_ADDR, 2, false);
radeon_emit(bc_va >> 8); /* R_030E00_TA_CS_BC_BASE_ADDR */
radeon_emit(S_030E04_ADDRESS(bc_va >> 40)); /* R_030E04_TA_CS_BC_BASE_ADDR_HI */
}
}
/* cs_preamble_state initializes this for the gfx queue, so only do this
* if we are on a compute queue.
*/
if (sctx->chip_class >= GFX9 &&
(cs != &sctx->gfx_cs || !sctx->screen->info.has_graphics)) {
radeon_set_uconfig_reg(R_0301EC_CP_COHER_START_DELAY,
sctx->chip_class >= GFX10 ? 0x20 : 0);
}
if (sctx->chip_class >= GFX10) {
radeon_set_sh_reg_seq(R_00B890_COMPUTE_USER_ACCUM_0, 5);
radeon_emit(0); /* R_00B890_COMPUTE_USER_ACCUM_0 */
radeon_emit(0); /* R_00B894_COMPUTE_USER_ACCUM_1 */
radeon_emit(0); /* R_00B898_COMPUTE_USER_ACCUM_2 */
radeon_emit(0); /* R_00B89C_COMPUTE_USER_ACCUM_3 */
radeon_emit(0); /* R_00B8A0_COMPUTE_PGM_RSRC3 */
radeon_set_sh_reg(R_00B9F4_COMPUTE_DISPATCH_TUNNEL, 0);
}
radeon_end();
}
static bool si_setup_compute_scratch_buffer(struct si_context *sctx, struct si_shader *shader,
struct ac_shader_config *config)
{
uint64_t scratch_bo_size, scratch_needed;
scratch_bo_size = 0;
scratch_needed = config->scratch_bytes_per_wave * sctx->scratch_waves;
if (sctx->compute_scratch_buffer)
scratch_bo_size = sctx->compute_scratch_buffer->b.b.width0;
if (scratch_bo_size < scratch_needed) {
si_resource_reference(&sctx->compute_scratch_buffer, NULL);
sctx->compute_scratch_buffer =
si_aligned_buffer_create(&sctx->screen->b,
SI_RESOURCE_FLAG_UNMAPPABLE | SI_RESOURCE_FLAG_DRIVER_INTERNAL,
PIPE_USAGE_DEFAULT,
scratch_needed, sctx->screen->info.pte_fragment_size);
if (!sctx->compute_scratch_buffer)
return false;
}
if (sctx->compute_scratch_buffer != shader->scratch_bo && scratch_needed) {
uint64_t scratch_va = sctx->compute_scratch_buffer->gpu_address;
if (!si_shader_binary_upload(sctx->screen, shader, scratch_va))
return false;
si_resource_reference(&shader->scratch_bo, sctx->compute_scratch_buffer);
}
return true;
}
static bool si_switch_compute_shader(struct si_context *sctx, struct si_compute *program,
struct si_shader *shader, const amd_kernel_code_t *code_object,
unsigned offset, bool *prefetch)
{
struct radeon_cmdbuf *cs = &sctx->gfx_cs;
struct ac_shader_config inline_config = {0};
struct ac_shader_config *config;
uint64_t shader_va;
*prefetch = false;
if (sctx->cs_shader_state.emitted_program == program && sctx->cs_shader_state.offset == offset)
return true;
if (program->ir_type != PIPE_SHADER_IR_NATIVE) {
config = &shader->config;
} else {
unsigned lds_blocks;
config = &inline_config;
code_object_to_config(code_object, config);
lds_blocks = config->lds_size;
/* XXX: We are over allocating LDS. For GFX6, the shader reports
* LDS in blocks of 256 bytes, so if there are 4 bytes lds
* allocated in the shader and 4 bytes allocated by the state
* tracker, then we will set LDS_SIZE to 512 bytes rather than 256.
*/
if (sctx->chip_class <= GFX6) {
lds_blocks += align(program->sel.info.base.shared_size, 256) >> 8;
} else {
lds_blocks += align(program->sel.info.base.shared_size, 512) >> 9;
}
/* TODO: use si_multiwave_lds_size_workaround */
assert(lds_blocks <= 0xFF);
config->rsrc2 &= C_00B84C_LDS_SIZE;
config->rsrc2 |= S_00B84C_LDS_SIZE(lds_blocks);
}
if (!si_setup_compute_scratch_buffer(sctx, shader, config))
return false;
if (shader->scratch_bo) {
COMPUTE_DBG(sctx->screen,
"Waves: %u; Scratch per wave: %u bytes; "
"Total Scratch: %u bytes\n",
sctx->scratch_waves, config->scratch_bytes_per_wave,
config->scratch_bytes_per_wave * sctx->scratch_waves);
radeon_add_to_buffer_list(sctx, &sctx->gfx_cs, shader->scratch_bo, RADEON_USAGE_READWRITE,
RADEON_PRIO_SCRATCH_BUFFER);
}
shader_va = shader->bo->gpu_address + offset;
if (program->ir_type == PIPE_SHADER_IR_NATIVE) {
/* Shader code is placed after the amd_kernel_code_t
* struct. */
shader_va += sizeof(amd_kernel_code_t);
}
radeon_add_to_buffer_list(sctx, &sctx->gfx_cs, shader->bo, RADEON_USAGE_READ,
RADEON_PRIO_SHADER_BINARY);
radeon_begin(cs);
radeon_set_sh_reg(R_00B830_COMPUTE_PGM_LO, shader_va >> 8);
radeon_set_sh_reg_seq(R_00B848_COMPUTE_PGM_RSRC1, 2);
radeon_emit(config->rsrc1);
radeon_emit(config->rsrc2);
COMPUTE_DBG(sctx->screen,
"COMPUTE_PGM_RSRC1: 0x%08x "
"COMPUTE_PGM_RSRC2: 0x%08x\n",
config->rsrc1, config->rsrc2);
sctx->max_seen_compute_scratch_bytes_per_wave =
MAX2(sctx->max_seen_compute_scratch_bytes_per_wave, config->scratch_bytes_per_wave);
radeon_set_sh_reg(R_00B860_COMPUTE_TMPRING_SIZE,
S_00B860_WAVES(sctx->scratch_waves) |
S_00B860_WAVESIZE(sctx->max_seen_compute_scratch_bytes_per_wave >> 10));
radeon_end();
sctx->cs_shader_state.emitted_program = program;
sctx->cs_shader_state.offset = offset;
sctx->cs_shader_state.uses_scratch = config->scratch_bytes_per_wave != 0;
*prefetch = true;
return true;
}
static void setup_scratch_rsrc_user_sgprs(struct si_context *sctx,
const amd_kernel_code_t *code_object, unsigned user_sgpr)
{
struct radeon_cmdbuf *cs = &sctx->gfx_cs;
uint64_t scratch_va = sctx->compute_scratch_buffer->gpu_address;
unsigned max_private_element_size =
AMD_HSA_BITS_GET(code_object->code_properties, AMD_CODE_PROPERTY_PRIVATE_ELEMENT_SIZE);
uint32_t scratch_dword0 = scratch_va & 0xffffffff;
uint32_t scratch_dword1 =
S_008F04_BASE_ADDRESS_HI(scratch_va >> 32) | S_008F04_SWIZZLE_ENABLE(1);
/* Disable address clamping */
uint32_t scratch_dword2 = 0xffffffff;
uint32_t scratch_dword3 = S_008F0C_INDEX_STRIDE(3) | S_008F0C_ADD_TID_ENABLE(1);
if (sctx->chip_class >= GFX9) {
assert(max_private_element_size == 1); /* always 4 bytes on GFX9 */
} else {
scratch_dword3 |= S_008F0C_ELEMENT_SIZE(max_private_element_size);
if (sctx->chip_class < GFX8) {
/* BUF_DATA_FORMAT is ignored, but it cannot be
* BUF_DATA_FORMAT_INVALID. */
scratch_dword3 |= S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_8);
}
}
radeon_begin(cs);
radeon_set_sh_reg_seq(R_00B900_COMPUTE_USER_DATA_0 + (user_sgpr * 4), 4);
radeon_emit(scratch_dword0);
radeon_emit(scratch_dword1);
radeon_emit(scratch_dword2);
radeon_emit(scratch_dword3);
radeon_end();
}
static void si_setup_user_sgprs_co_v2(struct si_context *sctx, const amd_kernel_code_t *code_object,
const struct pipe_grid_info *info, uint64_t kernel_args_va)
{
struct si_compute *program = sctx->cs_shader_state.program;
struct radeon_cmdbuf *cs = &sctx->gfx_cs;
static const enum amd_code_property_mask_t workgroup_count_masks[] = {
AMD_CODE_PROPERTY_ENABLE_SGPR_GRID_WORKGROUP_COUNT_X,
AMD_CODE_PROPERTY_ENABLE_SGPR_GRID_WORKGROUP_COUNT_Y,
AMD_CODE_PROPERTY_ENABLE_SGPR_GRID_WORKGROUP_COUNT_Z};
unsigned i, user_sgpr = 0;
if (AMD_HSA_BITS_GET(code_object->code_properties,
AMD_CODE_PROPERTY_ENABLE_SGPR_PRIVATE_SEGMENT_BUFFER)) {
if (code_object->workitem_private_segment_byte_size > 0) {
setup_scratch_rsrc_user_sgprs(sctx, code_object, user_sgpr);
}
user_sgpr += 4;
}
radeon_begin(cs);
if (AMD_HSA_BITS_GET(code_object->code_properties, AMD_CODE_PROPERTY_ENABLE_SGPR_DISPATCH_PTR)) {
struct dispatch_packet dispatch;
unsigned dispatch_offset;
struct si_resource *dispatch_buf = NULL;
uint64_t dispatch_va;
/* Upload dispatch ptr */
memset(&dispatch, 0, sizeof(dispatch));
dispatch.workgroup_size_x = util_cpu_to_le16(info->block[0]);
dispatch.workgroup_size_y = util_cpu_to_le16(info->block[1]);
dispatch.workgroup_size_z = util_cpu_to_le16(info->block[2]);
dispatch.grid_size_x = util_cpu_to_le32(info->grid[0] * info->block[0]);
dispatch.grid_size_y = util_cpu_to_le32(info->grid[1] * info->block[1]);
dispatch.grid_size_z = util_cpu_to_le32(info->grid[2] * info->block[2]);
dispatch.private_segment_size = util_cpu_to_le32(program->private_size);
dispatch.group_segment_size = util_cpu_to_le32(program->sel.info.base.shared_size);
dispatch.kernarg_address = util_cpu_to_le64(kernel_args_va);
u_upload_data(sctx->b.const_uploader, 0, sizeof(dispatch), 256, &dispatch, &dispatch_offset,
(struct pipe_resource **)&dispatch_buf);
if (!dispatch_buf) {
fprintf(stderr, "Error: Failed to allocate dispatch "
"packet.");
}
radeon_add_to_buffer_list(sctx, &sctx->gfx_cs, dispatch_buf, RADEON_USAGE_READ,
RADEON_PRIO_CONST_BUFFER);
dispatch_va = dispatch_buf->gpu_address + dispatch_offset;
radeon_set_sh_reg_seq(R_00B900_COMPUTE_USER_DATA_0 + (user_sgpr * 4), 2);
radeon_emit(dispatch_va);
radeon_emit(S_008F04_BASE_ADDRESS_HI(dispatch_va >> 32) | S_008F04_STRIDE(0));
si_resource_reference(&dispatch_buf, NULL);
user_sgpr += 2;
}
if (AMD_HSA_BITS_GET(code_object->code_properties,
AMD_CODE_PROPERTY_ENABLE_SGPR_KERNARG_SEGMENT_PTR)) {
radeon_set_sh_reg_seq(R_00B900_COMPUTE_USER_DATA_0 + (user_sgpr * 4), 2);
radeon_emit(kernel_args_va);
radeon_emit(S_008F04_BASE_ADDRESS_HI(kernel_args_va >> 32) | S_008F04_STRIDE(0));
user_sgpr += 2;
}
for (i = 0; i < 3 && user_sgpr < 16; i++) {
if (code_object->code_properties & workgroup_count_masks[i]) {
radeon_set_sh_reg_seq(R_00B900_COMPUTE_USER_DATA_0 + (user_sgpr * 4), 1);
radeon_emit(info->grid[i]);
user_sgpr += 1;
}
}
radeon_end();
}
static bool si_upload_compute_input(struct si_context *sctx, const amd_kernel_code_t *code_object,
const struct pipe_grid_info *info)
{
struct si_compute *program = sctx->cs_shader_state.program;
struct si_resource *input_buffer = NULL;
uint32_t kernel_args_offset = 0;
uint32_t *kernel_args;
void *kernel_args_ptr;
uint64_t kernel_args_va;
u_upload_alloc(sctx->b.const_uploader, 0, program->input_size,
sctx->screen->info.tcc_cache_line_size, &kernel_args_offset,
(struct pipe_resource **)&input_buffer, &kernel_args_ptr);
if (unlikely(!kernel_args_ptr))
return false;
kernel_args = (uint32_t *)kernel_args_ptr;
kernel_args_va = input_buffer->gpu_address + kernel_args_offset;
memcpy(kernel_args, info->input, program->input_size);
for (unsigned i = 0; i < program->input_size / 4; i++) {
COMPUTE_DBG(sctx->screen, "input %u : %u\n", i, kernel_args[i]);
}
radeon_add_to_buffer_list(sctx, &sctx->gfx_cs, input_buffer, RADEON_USAGE_READ,
RADEON_PRIO_CONST_BUFFER);
si_setup_user_sgprs_co_v2(sctx, code_object, info, kernel_args_va);
si_resource_reference(&input_buffer, NULL);
return true;
}
static void si_setup_nir_user_data(struct si_context *sctx, const struct pipe_grid_info *info)
{
struct si_compute *program = sctx->cs_shader_state.program;
struct si_shader_selector *sel = &program->sel;
struct radeon_cmdbuf *cs = &sctx->gfx_cs;
unsigned grid_size_reg = R_00B900_COMPUTE_USER_DATA_0 + 4 * SI_NUM_RESOURCE_SGPRS;
unsigned block_size_reg = grid_size_reg +
/* 12 bytes = 3 dwords. */
12 * sel->info.uses_grid_size;
unsigned cs_user_data_reg = block_size_reg + 4 * program->sel.info.uses_variable_block_size;
radeon_begin(cs);
if (sel->info.uses_grid_size) {
if (info->indirect) {
radeon_end();
for (unsigned i = 0; i < 3; ++i) {
si_cp_copy_data(sctx, &sctx->gfx_cs, COPY_DATA_REG, NULL, (grid_size_reg >> 2) + i,
COPY_DATA_SRC_MEM, si_resource(info->indirect),
info->indirect_offset + 4 * i);
}
radeon_begin_again(cs);
} else {
radeon_set_sh_reg_seq(grid_size_reg, 3);
radeon_emit(info->grid[0]);
radeon_emit(info->grid[1]);
radeon_emit(info->grid[2]);
}
}
if (sel->info.uses_variable_block_size) {
radeon_set_sh_reg(block_size_reg,
info->block[0] | (info->block[1] << 10) | (info->block[2] << 20));
}
if (sel->info.base.cs.user_data_components_amd) {
radeon_set_sh_reg_seq(cs_user_data_reg, sel->info.base.cs.user_data_components_amd);
radeon_emit_array(sctx->cs_user_data, sel->info.base.cs.user_data_components_amd);
}
radeon_end();
}
static void si_emit_dispatch_packets(struct si_context *sctx, const struct pipe_grid_info *info)
{
struct si_screen *sscreen = sctx->screen;
struct radeon_cmdbuf *cs = &sctx->gfx_cs;
bool render_cond_bit = sctx->render_cond_enabled;
unsigned threads_per_threadgroup = info->block[0] * info->block[1] * info->block[2];
unsigned waves_per_threadgroup =
DIV_ROUND_UP(threads_per_threadgroup, sscreen->compute_wave_size);
unsigned threadgroups_per_cu = 1;
if (sctx->chip_class >= GFX10 && waves_per_threadgroup == 1)
threadgroups_per_cu = 2;
if (unlikely(sctx->thread_trace_enabled)) {
si_write_event_with_dims_marker(sctx, &sctx->gfx_cs,
info->indirect ? EventCmdDispatchIndirect : EventCmdDispatch,
info->grid[0], info->grid[1], info->grid[2]);
}
radeon_begin(cs);
radeon_set_sh_reg(
R_00B854_COMPUTE_RESOURCE_LIMITS,
ac_get_compute_resource_limits(&sscreen->info, waves_per_threadgroup,
sctx->cs_max_waves_per_sh, threadgroups_per_cu));
unsigned dispatch_initiator = S_00B800_COMPUTE_SHADER_EN(1) | S_00B800_FORCE_START_AT_000(1) |
/* If the KMD allows it (there is a KMD hw register for it),
* allow launching waves out-of-order. (same as Vulkan) */
S_00B800_ORDER_MODE(sctx->chip_class >= GFX7) |
S_00B800_CS_W32_EN(sscreen->compute_wave_size == 32);
const uint *last_block = info->last_block;
bool partial_block_en = last_block[0] || last_block[1] || last_block[2];
radeon_set_sh_reg_seq(R_00B81C_COMPUTE_NUM_THREAD_X, 3);
if (partial_block_en) {
unsigned partial[3];
/* If no partial_block, these should be an entire block size, not 0. */
partial[0] = last_block[0] ? last_block[0] : info->block[0];
partial[1] = last_block[1] ? last_block[1] : info->block[1];
partial[2] = last_block[2] ? last_block[2] : info->block[2];
radeon_emit(S_00B81C_NUM_THREAD_FULL(info->block[0]) |
S_00B81C_NUM_THREAD_PARTIAL(partial[0]));
radeon_emit(S_00B820_NUM_THREAD_FULL(info->block[1]) |
S_00B820_NUM_THREAD_PARTIAL(partial[1]));
radeon_emit(S_00B824_NUM_THREAD_FULL(info->block[2]) |
S_00B824_NUM_THREAD_PARTIAL(partial[2]));
dispatch_initiator |= S_00B800_PARTIAL_TG_EN(1);
} else {
radeon_emit(S_00B81C_NUM_THREAD_FULL(info->block[0]));
radeon_emit(S_00B820_NUM_THREAD_FULL(info->block[1]));
radeon_emit(S_00B824_NUM_THREAD_FULL(info->block[2]));
}
if (info->indirect) {
uint64_t base_va = si_resource(info->indirect)->gpu_address;
radeon_add_to_buffer_list(sctx, &sctx->gfx_cs, si_resource(info->indirect), RADEON_USAGE_READ,
RADEON_PRIO_DRAW_INDIRECT);
radeon_emit(PKT3(PKT3_SET_BASE, 2, 0) | PKT3_SHADER_TYPE_S(1));
radeon_emit(1);
radeon_emit(base_va);
radeon_emit(base_va >> 32);
radeon_emit(PKT3(PKT3_DISPATCH_INDIRECT, 1, render_cond_bit) | PKT3_SHADER_TYPE_S(1));
radeon_emit(info->indirect_offset);
radeon_emit(dispatch_initiator);
} else {
radeon_emit(PKT3(PKT3_DISPATCH_DIRECT, 3, render_cond_bit) | PKT3_SHADER_TYPE_S(1));
radeon_emit(info->grid[0]);
radeon_emit(info->grid[1]);
radeon_emit(info->grid[2]);
radeon_emit(dispatch_initiator);
}
if (unlikely(sctx->thread_trace_enabled && sctx->chip_class >= GFX9)) {
radeon_emit(PKT3(PKT3_EVENT_WRITE, 0, 0));
radeon_emit(EVENT_TYPE(V_028A90_THREAD_TRACE_MARKER) | EVENT_INDEX(0));
}
radeon_end();
}
static bool si_check_needs_implicit_sync(struct si_context *sctx)
{
/* If the compute shader is going to read from a texture/image written by a
* previous draw, we must wait for its completion before continuing.
* Buffers and image stores (from the draw) are not taken into consideration
* because that's the app responsibility.
*
* The OpenGL 4.6 spec says:
*
* buffer object and texture stores performed by shaders are not
* automatically synchronized
*
* TODO: Bindless textures are not handled, and thus are not synchronized.
*/
struct si_shader_info *info = &sctx->cs_shader_state.program->sel.info;
struct si_samplers *samplers = &sctx->samplers[PIPE_SHADER_COMPUTE];
unsigned mask = samplers->enabled_mask & info->base.textures_used[0];
while (mask) {
int i = u_bit_scan(&mask);
struct si_sampler_view *sview = (struct si_sampler_view *)samplers->views[i];
struct si_resource *res = si_resource(sview->base.texture);
if (sctx->ws->cs_is_buffer_referenced(&sctx->gfx_cs, res->buf,
RADEON_USAGE_NEEDS_IMPLICIT_SYNC))
return true;
}
struct si_images *images = &sctx->images[PIPE_SHADER_COMPUTE];
mask = u_bit_consecutive(0, info->base.num_images) & images->enabled_mask;
while (mask) {
int i = u_bit_scan(&mask);
struct pipe_image_view *sview = &images->views[i];
struct si_resource *res = si_resource(sview->resource);
if (sctx->ws->cs_is_buffer_referenced(&sctx->gfx_cs, res->buf,
RADEON_USAGE_NEEDS_IMPLICIT_SYNC))
return true;
}
return false;
}
static void si_launch_grid(struct pipe_context *ctx, const struct pipe_grid_info *info)
{
struct si_context *sctx = (struct si_context *)ctx;
struct si_screen *sscreen = sctx->screen;
struct si_compute *program = sctx->cs_shader_state.program;
const amd_kernel_code_t *code_object = si_compute_get_code_object(program, info->pc);
int i;
bool cs_regalloc_hang = sscreen->info.has_cs_regalloc_hang_bug &&
info->block[0] * info->block[1] * info->block[2] > 256;
if (cs_regalloc_hang)
sctx->flags |= SI_CONTEXT_PS_PARTIAL_FLUSH | SI_CONTEXT_CS_PARTIAL_FLUSH;
if (program->ir_type != PIPE_SHADER_IR_NATIVE && program->shader.compilation_failed)
return;
if (sctx->has_graphics) {
if (sctx->last_num_draw_calls != sctx->num_draw_calls) {
si_update_fb_dirtiness_after_rendering(sctx);
sctx->last_num_draw_calls = sctx->num_draw_calls;
if (sctx->force_cb_shader_coherent || si_check_needs_implicit_sync(sctx))
si_make_CB_shader_coherent(sctx, 0,
sctx->framebuffer.CB_has_shader_readable_metadata,
sctx->framebuffer.all_DCC_pipe_aligned);
}
si_decompress_textures(sctx, 1 << PIPE_SHADER_COMPUTE);
}
/* Add buffer sizes for memory checking in need_cs_space. */
si_context_add_resource_size(sctx, &program->shader.bo->b.b);
/* TODO: add the scratch buffer */
if (info->indirect) {
si_context_add_resource_size(sctx, info->indirect);
/* Indirect buffers use TC L2 on GFX9, but not older hw. */
if (sctx->chip_class <= GFX8 && si_resource(info->indirect)->TC_L2_dirty) {
sctx->flags |= SI_CONTEXT_WB_L2;
si_resource(info->indirect)->TC_L2_dirty = false;
}
}
si_need_gfx_cs_space(sctx, 0);
/* If we're using a secure context, determine if cs must be secure or not */
if (unlikely(radeon_uses_secure_bos(sctx->ws))) {
bool secure = si_compute_resources_check_encrypted(sctx);
if (secure != sctx->ws->cs_is_secure(&sctx->gfx_cs)) {
si_flush_gfx_cs(sctx, RADEON_FLUSH_ASYNC_START_NEXT_GFX_IB_NOW |
RADEON_FLUSH_TOGGLE_SECURE_SUBMISSION,
NULL);
}
}
if (sctx->bo_list_add_all_compute_resources)
si_compute_resources_add_all_to_bo_list(sctx);
if (!sctx->cs_shader_state.initialized) {
si_emit_initial_compute_regs(sctx, &sctx->gfx_cs);
sctx->cs_shader_state.emitted_program = NULL;
sctx->cs_shader_state.initialized = true;
}
/* First emit registers. */
bool prefetch;
if (!si_switch_compute_shader(sctx, program, &program->shader, code_object, info->pc, &prefetch))
return;
si_upload_compute_shader_descriptors(sctx);
si_emit_compute_shader_pointers(sctx);
if (program->ir_type == PIPE_SHADER_IR_NATIVE &&
unlikely(!si_upload_compute_input(sctx, code_object, info)))
return;
/* Global buffers */
for (i = 0; i < program->max_global_buffers; i++) {
struct si_resource *buffer = si_resource(program->global_buffers[i]);
if (!buffer) {
continue;
}
radeon_add_to_buffer_list(sctx, &sctx->gfx_cs, buffer, RADEON_USAGE_READWRITE,
RADEON_PRIO_COMPUTE_GLOBAL);
}
/* Registers that are not read from memory should be set before this: */
if (sctx->flags)
sctx->emit_cache_flush(sctx, &sctx->gfx_cs);
if (sctx->has_graphics && si_is_atom_dirty(sctx, &sctx->atoms.s.render_cond)) {
sctx->atoms.s.render_cond.emit(sctx);
si_set_atom_dirty(sctx, &sctx->atoms.s.render_cond, false);
}
/* Prefetch the compute shader to L2. */
if (sctx->chip_class >= GFX7 && prefetch)
si_cp_dma_prefetch(sctx, &program->shader.bo->b.b, 0, program->shader.bo->b.b.width0);
if (program->ir_type != PIPE_SHADER_IR_NATIVE)
si_setup_nir_user_data(sctx, info);
si_emit_dispatch_packets(sctx, info);
if (unlikely(sctx->current_saved_cs)) {
si_trace_emit(sctx);
si_log_compute_state(sctx, sctx->log);
}
/* Mark displayable DCC as dirty for bound images. */
unsigned display_dcc_store_mask = sctx->images[PIPE_SHADER_COMPUTE].display_dcc_store_mask &
BITFIELD_MASK(program->sel.info.base.num_images);
while (display_dcc_store_mask) {
struct si_texture *tex = (struct si_texture *)
sctx->images[PIPE_SHADER_COMPUTE].views[u_bit_scan(&display_dcc_store_mask)].resource;
si_mark_display_dcc_dirty(sctx, tex);
}
/* TODO: Bindless images don't set displayable_dcc_dirty after image stores. */
sctx->compute_is_busy = true;
sctx->num_compute_calls++;
if (cs_regalloc_hang)
sctx->flags |= SI_CONTEXT_CS_PARTIAL_FLUSH;
}
void si_destroy_compute(struct si_compute *program)
{
struct si_shader_selector *sel = &program->sel;
if (program->ir_type != PIPE_SHADER_IR_NATIVE) {
util_queue_drop_job(&sel->screen->shader_compiler_queue, &sel->ready);
util_queue_fence_destroy(&sel->ready);
}
for (unsigned i = 0; i < program->max_global_buffers; i++)
pipe_resource_reference(&program->global_buffers[i], NULL);
FREE(program->global_buffers);
si_shader_destroy(&program->shader);
ralloc_free(program->sel.nir);
FREE(program);
}
static void si_delete_compute_state(struct pipe_context *ctx, void *state)
{
struct si_compute *program = (struct si_compute *)state;
struct si_context *sctx = (struct si_context *)ctx;
if (!state)
return;
if (program == sctx->cs_shader_state.program)
sctx->cs_shader_state.program = NULL;
if (program == sctx->cs_shader_state.emitted_program)
sctx->cs_shader_state.emitted_program = NULL;
si_compute_reference(&program, NULL);
}
static void si_set_compute_resources(struct pipe_context *ctx_, unsigned start, unsigned count,
struct pipe_surface **surfaces)
{
}
void si_init_compute_functions(struct si_context *sctx)
{
sctx->b.create_compute_state = si_create_compute_state;
sctx->b.delete_compute_state = si_delete_compute_state;
sctx->b.bind_compute_state = si_bind_compute_state;
sctx->b.set_compute_resources = si_set_compute_resources;
sctx->b.set_global_binding = si_set_global_binding;
sctx->b.launch_grid = si_launch_grid;
}