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#include "util/u_memory.h"
#include "radeonsi_pipe.h"
#include "radeonsi_shader.h"
#include "radeon_llvm_util.h"
#define MAX_GLOBAL_BUFFERS 20
struct si_pipe_compute {
struct r600_context *ctx;
unsigned local_size;
unsigned private_size;
unsigned input_size;
unsigned num_kernels;
struct si_pipe_shader *kernels;
unsigned num_user_sgprs;
struct pipe_resource *global_buffers[MAX_GLOBAL_BUFFERS];
};
static void *radeonsi_create_compute_state(
struct pipe_context *ctx,
const struct pipe_compute_state *cso)
{
struct r600_context *rctx = (struct r600_context *)ctx;
struct si_pipe_compute *program =
CALLOC_STRUCT(si_pipe_compute);
const struct pipe_llvm_program_header *header;
const unsigned char *code;
unsigned i;
header = cso->prog;
code = cso->prog + sizeof(struct pipe_llvm_program_header);
program->ctx = rctx;
program->local_size = cso->req_local_mem;
program->private_size = cso->req_private_mem;
program->input_size = cso->req_input_mem;
program->num_kernels = radeon_llvm_get_num_kernels(code,
header->num_bytes);
program->kernels = CALLOC(sizeof(struct si_pipe_shader),
program->num_kernels);
for (i = 0; i < program->num_kernels; i++) {
LLVMModuleRef mod = radeon_llvm_get_kernel_module(i, code,
header->num_bytes);
si_compile_llvm(rctx, &program->kernels[i], mod);
}
return program;
}
static void radeonsi_bind_compute_state(struct pipe_context *ctx, void *state)
{
struct r600_context *rctx = (struct r600_context*)ctx;
rctx->cs_shader_state.program = (struct si_pipe_compute*)state;
}
static void radeonsi_set_global_binding(
struct pipe_context *ctx, unsigned first, unsigned n,
struct pipe_resource **resources,
uint32_t **handles)
{
unsigned i;
struct r600_context *rctx = (struct r600_context*)ctx;
struct si_pipe_compute *program = rctx->cs_shader_state.program;
if (!resources) {
for (i = first; i < first + n; i++) {
program->global_buffers[i] = NULL;
}
return;
}
for (i = first; i < first + n; i++) {
uint64_t va;
program->global_buffers[i] = resources[i];
va = r600_resource_va(ctx->screen, resources[i]);
memcpy(handles[i], &va, sizeof(va));
}
}
static void radeonsi_launch_grid(
struct pipe_context *ctx,
const uint *block_layout, const uint *grid_layout,
uint32_t pc, const void *input)
{
struct r600_context *rctx = (struct r600_context*)ctx;
struct si_pipe_compute *program = rctx->cs_shader_state.program;
struct si_pm4_state *pm4 = CALLOC_STRUCT(si_pm4_state);
uint64_t shader_va;
unsigned arg_user_sgpr_count;
unsigned i;
struct si_pipe_shader *shader = &program->kernels[pc];
pm4->compute_pkt = true;
si_cmd_context_control(pm4);
si_pm4_cmd_begin(pm4, PKT3_EVENT_WRITE);
si_pm4_cmd_add(pm4, EVENT_TYPE(EVENT_TYPE_CACHE_FLUSH) |
EVENT_INDEX(0x7) |
EVENT_WRITE_INV_L2);
si_pm4_cmd_end(pm4, false);
si_pm4_inval_texture_cache(pm4);
si_pm4_inval_shader_cache(pm4);
si_cmd_surface_sync(pm4, pm4->cp_coher_cntl);
arg_user_sgpr_count = program->input_size / 4;
if (program->input_size % 4 != 0) {
arg_user_sgpr_count++;
}
/* XXX: We should store arguments in memory if we run out of user sgprs.
*/
assert(arg_user_sgpr_count < 16);
for (i = 0; i < arg_user_sgpr_count; i++) {
uint32_t *args = (uint32_t*)input;
si_pm4_set_reg(pm4, R_00B900_COMPUTE_USER_DATA_0 +
(i * 4),
args[i]);
}
si_pm4_set_reg(pm4, R_00B810_COMPUTE_START_X, 0);
si_pm4_set_reg(pm4, R_00B814_COMPUTE_START_Y, 0);
si_pm4_set_reg(pm4, R_00B818_COMPUTE_START_Z, 0);
si_pm4_set_reg(pm4, R_00B81C_COMPUTE_NUM_THREAD_X,
S_00B81C_NUM_THREAD_FULL(block_layout[0]));
si_pm4_set_reg(pm4, R_00B820_COMPUTE_NUM_THREAD_Y,
S_00B820_NUM_THREAD_FULL(block_layout[1]));
si_pm4_set_reg(pm4, R_00B824_COMPUTE_NUM_THREAD_Z,
S_00B824_NUM_THREAD_FULL(block_layout[2]));
/* Global buffers */
for (i = 0; i < MAX_GLOBAL_BUFFERS; i++) {
struct si_resource *buffer =
(struct si_resource*)program->global_buffers[i];
if (!buffer) {
continue;
}
si_pm4_add_bo(pm4, buffer, RADEON_USAGE_READWRITE);
}
/* XXX: This should be:
* (number of compute units) * 4 * (waves per simd) - 1 */
si_pm4_set_reg(pm4, R_00B82C_COMPUTE_MAX_WAVE_ID, 0x190 /* Default value */);
shader_va = r600_resource_va(ctx->screen, (void *)shader->bo);
si_pm4_add_bo(pm4, shader->bo, RADEON_USAGE_READ);
si_pm4_set_reg(pm4, R_00B830_COMPUTE_PGM_LO, (shader_va >> 8) & 0xffffffff);
si_pm4_set_reg(pm4, R_00B834_COMPUTE_PGM_HI, shader_va >> 40);
si_pm4_set_reg(pm4, R_00B848_COMPUTE_PGM_RSRC1,
/* We always use at least 3 VGPRS, these come from
* TIDIG_COMP_CNT.
* XXX: The compiler should account for this.
*/
S_00B848_VGPRS((MAX2(3, shader->num_vgprs) - 1) / 4)
/* We always use at least 4 + arg_user_sgpr_count. The 4 extra
* sgprs are from TGID_X_EN, TGID_Y_EN, TGID_Z_EN, TG_SIZE_EN
* XXX: The compiler should account for this.
*/
| S_00B848_SGPRS(((MAX2(4 + arg_user_sgpr_count,
shader->num_sgprs)) - 1) / 8))
;
si_pm4_set_reg(pm4, R_00B84C_COMPUTE_PGM_RSRC2,
S_00B84C_SCRATCH_EN(0)
| S_00B84C_USER_SGPR(arg_user_sgpr_count)
| S_00B84C_TGID_X_EN(1)
| S_00B84C_TGID_Y_EN(1)
| S_00B84C_TGID_Z_EN(1)
| S_00B84C_TG_SIZE_EN(1)
| S_00B84C_TIDIG_COMP_CNT(2)
| S_00B84C_LDS_SIZE(0)
| S_00B84C_EXCP_EN(0))
;
si_pm4_set_reg(pm4, R_00B854_COMPUTE_RESOURCE_LIMITS, 0);
si_pm4_set_reg(pm4, R_00B858_COMPUTE_STATIC_THREAD_MGMT_SE0,
S_00B858_SH0_CU_EN(0xffff /* Default value */)
| S_00B858_SH1_CU_EN(0xffff /* Default value */))
;
si_pm4_set_reg(pm4, R_00B85C_COMPUTE_STATIC_THREAD_MGMT_SE1,
S_00B85C_SH0_CU_EN(0xffff /* Default value */)
| S_00B85C_SH1_CU_EN(0xffff /* Default value */))
;
si_pm4_cmd_begin(pm4, PKT3_DISPATCH_DIRECT);
si_pm4_cmd_add(pm4, grid_layout[0]); /* Thread groups DIM_X */
si_pm4_cmd_add(pm4, grid_layout[1]); /* Thread groups DIM_Y */
si_pm4_cmd_add(pm4, grid_layout[2]); /* Thread gropus DIM_Z */
si_pm4_cmd_add(pm4, 1); /* DISPATCH_INITIATOR */
si_pm4_cmd_end(pm4, false);
si_pm4_cmd_begin(pm4, PKT3_EVENT_WRITE);
si_pm4_cmd_add(pm4, EVENT_TYPE(V_028A90_CS_PARTIAL_FLUSH | EVENT_INDEX(0x4)));
si_pm4_cmd_end(pm4, false);
si_pm4_inval_texture_cache(pm4);
si_pm4_inval_shader_cache(pm4);
si_cmd_surface_sync(pm4, pm4->cp_coher_cntl);
si_pm4_emit(rctx, pm4);
#if 0
fprintf(stderr, "cdw: %i\n", rctx->cs->cdw);
for (i = 0; i < rctx->cs->cdw; i++) {
fprintf(stderr, "%4i : 0x%08X\n", i, rctx->cs->buf[i]);
}
#endif
rctx->ws->cs_flush(rctx->cs, RADEON_FLUSH_COMPUTE, 0);
rctx->ws->buffer_wait(shader->bo->buf, 0);
FREE(pm4);
}
static void si_delete_compute_state(struct pipe_context *ctx, void* state){}
static void si_set_compute_resources(struct pipe_context * ctx_,
unsigned start, unsigned count,
struct pipe_surface ** surfaces) { }
static void si_set_cs_sampler_view(struct pipe_context *ctx_,
unsigned start_slot, unsigned count,
struct pipe_sampler_view **views) { }
static void si_bind_compute_sampler_states(
struct pipe_context *ctx_,
unsigned start_slot,
unsigned num_samplers,
void **samplers_) { }
void si_init_compute_functions(struct r600_context *rctx)
{
rctx->context.create_compute_state = radeonsi_create_compute_state;
rctx->context.delete_compute_state = si_delete_compute_state;
rctx->context.bind_compute_state = radeonsi_bind_compute_state;
/* ctx->context.create_sampler_view = evergreen_compute_create_sampler_view; */
rctx->context.set_compute_resources = si_set_compute_resources;
rctx->context.set_compute_sampler_views = si_set_cs_sampler_view;
rctx->context.bind_compute_sampler_states = si_bind_compute_sampler_states;
rctx->context.set_global_binding = radeonsi_set_global_binding;
rctx->context.launch_grid = radeonsi_launch_grid;
}
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