/* * Copyright © 2015 Intel 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 "util/ralloc.h" #include "brw_context.h" #include "brw_cs.h" #include "brw_eu.h" #include "brw_wm.h" #include "brw_shader.h" #include "intel_mipmap_tree.h" #include "intel_batchbuffer.h" #include "brw_state.h" #include "program/prog_statevars.h" #include "compiler/glsl/ir_uniform.h" #include "main/shaderapi.h" static void brw_upload_cs_state(struct brw_context *brw) { if (!brw->cs.prog_data) return; uint32_t offset; uint32_t *desc = (uint32_t*) brw_state_batch(brw, AUB_TRACE_SURFACE_STATE, 8 * 4, 64, &offset); struct brw_stage_state *stage_state = &brw->cs.base; struct brw_cs_prog_data *cs_prog_data = brw->cs.prog_data; struct brw_stage_prog_data *prog_data = &cs_prog_data->base; const struct gen_device_info *devinfo = brw->intelScreen->devinfo; if (INTEL_DEBUG & DEBUG_SHADER_TIME) { brw_emit_buffer_surface_state( brw, &stage_state->surf_offset[ prog_data->binding_table.shader_time_start], brw->shader_time.bo, 0, BRW_SURFACEFORMAT_RAW, brw->shader_time.bo->size, 1, true); } uint32_t *bind = (uint32_t*) brw_state_batch(brw, AUB_TRACE_BINDING_TABLE, prog_data->binding_table.size_bytes, 32, &stage_state->bind_bo_offset); uint32_t dwords = brw->gen < 8 ? 8 : 9; BEGIN_BATCH(dwords); OUT_BATCH(MEDIA_VFE_STATE << 16 | (dwords - 2)); if (prog_data->total_scratch) { if (brw->gen >= 8) { /* Broadwell's Per Thread Scratch Space is in the range [0, 11] * where 0 = 1k, 1 = 2k, 2 = 4k, ..., 11 = 2M. */ OUT_RELOC64(stage_state->scratch_bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, ffs(stage_state->per_thread_scratch) - 11); } else if (brw->is_haswell) { /* Haswell's Per Thread Scratch Space is in the range [0, 10] * where 0 = 2k, 1 = 4k, 2 = 8k, ..., 10 = 2M. */ OUT_RELOC(stage_state->scratch_bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, ffs(stage_state->per_thread_scratch) - 12); } else { /* Earlier platforms use the range [0, 11] to mean [1kB, 12kB] * where 0 = 1kB, 1 = 2kB, 2 = 3kB, ..., 11 = 12kB. */ OUT_RELOC(stage_state->scratch_bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER, stage_state->per_thread_scratch / 1024 - 1); } } else { OUT_BATCH(0); if (brw->gen >= 8) OUT_BATCH(0); } const uint32_t vfe_num_urb_entries = brw->gen >= 8 ? 2 : 0; const uint32_t vfe_gpgpu_mode = brw->gen == 7 ? SET_FIELD(1, GEN7_MEDIA_VFE_STATE_GPGPU_MODE) : 0; const uint32_t subslices = MAX2(brw->intelScreen->subslice_total, 1); OUT_BATCH(SET_FIELD(brw->max_cs_threads * subslices - 1, MEDIA_VFE_STATE_MAX_THREADS) | SET_FIELD(vfe_num_urb_entries, MEDIA_VFE_STATE_URB_ENTRIES) | SET_FIELD(1, MEDIA_VFE_STATE_RESET_GTW_TIMER) | SET_FIELD(1, MEDIA_VFE_STATE_BYPASS_GTW) | vfe_gpgpu_mode); OUT_BATCH(0); const uint32_t vfe_urb_allocation = brw->gen >= 8 ? 2 : 0; /* We are uploading duplicated copies of push constant uniforms for each * thread. Although the local id data needs to vary per thread, it won't * change for other uniform data. Unfortunately this duplication is * required for gen7. As of Haswell, this duplication can be avoided, but * this older mechanism with duplicated data continues to work. * * FINISHME: As of Haswell, we could make use of the * INTERFACE_DESCRIPTOR_DATA "Cross-Thread Constant Data Read Length" field * to only store one copy of uniform data. * * FINISHME: Broadwell adds a new alternative "Indirect Payload Storage" * which is described in the GPGPU_WALKER command and in the Broadwell PRM * Volume 7: 3D Media GPGPU, under Media GPGPU Pipeline => Mode of * Operations => GPGPU Mode => Indirect Payload Storage. * * Note: The constant data is built in brw_upload_cs_push_constants below. */ const uint32_t vfe_curbe_allocation = ALIGN(cs_prog_data->push.per_thread.regs * cs_prog_data->threads + cs_prog_data->push.cross_thread.regs, 2); OUT_BATCH(SET_FIELD(vfe_urb_allocation, MEDIA_VFE_STATE_URB_ALLOC) | SET_FIELD(vfe_curbe_allocation, MEDIA_VFE_STATE_CURBE_ALLOC)); OUT_BATCH(0); OUT_BATCH(0); OUT_BATCH(0); ADVANCE_BATCH(); if (cs_prog_data->push.total.size > 0) { BEGIN_BATCH(4); OUT_BATCH(MEDIA_CURBE_LOAD << 16 | (4 - 2)); OUT_BATCH(0); OUT_BATCH(ALIGN(cs_prog_data->push.total.size, 64)); OUT_BATCH(stage_state->push_const_offset); ADVANCE_BATCH(); } /* BRW_NEW_SURFACES and BRW_NEW_*_CONSTBUF */ memcpy(bind, stage_state->surf_offset, prog_data->binding_table.size_bytes); memset(desc, 0, 8 * 4); int dw = 0; desc[dw++] = brw->cs.base.prog_offset; if (brw->gen >= 8) desc[dw++] = 0; /* Kernel Start Pointer High */ desc[dw++] = 0; desc[dw++] = stage_state->sampler_offset | ((stage_state->sampler_count + 3) / 4); desc[dw++] = stage_state->bind_bo_offset; desc[dw++] = SET_FIELD(cs_prog_data->push.per_thread.regs, MEDIA_CURBE_READ_LENGTH); const uint32_t media_threads = brw->gen >= 8 ? SET_FIELD(cs_prog_data->threads, GEN8_MEDIA_GPGPU_THREAD_COUNT) : SET_FIELD(cs_prog_data->threads, MEDIA_GPGPU_THREAD_COUNT); assert(cs_prog_data->threads <= brw->max_cs_threads); const uint32_t slm_size = encode_slm_size(devinfo->gen, prog_data->total_shared); desc[dw++] = SET_FIELD(cs_prog_data->uses_barrier, MEDIA_BARRIER_ENABLE) | SET_FIELD(slm_size, MEDIA_SHARED_LOCAL_MEMORY_SIZE) | media_threads; desc[dw++] = SET_FIELD(cs_prog_data->push.cross_thread.regs, CROSS_THREAD_READ_LENGTH); BEGIN_BATCH(4); OUT_BATCH(MEDIA_INTERFACE_DESCRIPTOR_LOAD << 16 | (4 - 2)); OUT_BATCH(0); OUT_BATCH(8 * 4); OUT_BATCH(offset); ADVANCE_BATCH(); } const struct brw_tracked_state brw_cs_state = { .dirty = { .mesa = _NEW_PROGRAM_CONSTANTS, .brw = BRW_NEW_BATCH | BRW_NEW_BLORP | BRW_NEW_CS_PROG_DATA | BRW_NEW_PUSH_CONSTANT_ALLOCATION | BRW_NEW_SAMPLER_STATE_TABLE | BRW_NEW_SURFACES, }, .emit = brw_upload_cs_state }; /** * Creates a region containing the push constants for the CS on gen7+. * * Push constants are constant values (such as GLSL uniforms) that are * pre-loaded into a shader stage's register space at thread spawn time. * * For other stages, see brw_curbe.c:brw_upload_constant_buffer for the * equivalent gen4/5 code and gen6_vs_state.c:gen6_upload_push_constants for * gen6+. */ static void brw_upload_cs_push_constants(struct brw_context *brw, const struct gl_program *prog, const struct brw_cs_prog_data *cs_prog_data, struct brw_stage_state *stage_state, enum aub_state_struct_type type) { struct gl_context *ctx = &brw->ctx; const struct brw_stage_prog_data *prog_data = (struct brw_stage_prog_data*) cs_prog_data; /* Updates the ParamaterValues[i] pointers for all parameters of the * basic type of PROGRAM_STATE_VAR. */ /* XXX: Should this happen somewhere before to get our state flag set? */ _mesa_load_state_parameters(ctx, prog->Parameters); if (cs_prog_data->push.total.size == 0) { stage_state->push_const_size = 0; return; } gl_constant_value *param = (gl_constant_value*) brw_state_batch(brw, type, ALIGN(cs_prog_data->push.total.size, 64), 64, &stage_state->push_const_offset); assert(param); STATIC_ASSERT(sizeof(gl_constant_value) == sizeof(float)); if (cs_prog_data->push.cross_thread.size > 0) { gl_constant_value *param_copy = param; assert(cs_prog_data->thread_local_id_index < 0 || cs_prog_data->thread_local_id_index >= cs_prog_data->push.cross_thread.dwords); for (unsigned i = 0; i < cs_prog_data->push.cross_thread.dwords; i++) { param_copy[i] = *prog_data->param[i]; } } gl_constant_value thread_id; if (cs_prog_data->push.per_thread.size > 0) { for (unsigned t = 0; t < cs_prog_data->threads; t++) { unsigned dst = 8 * (cs_prog_data->push.per_thread.regs * t + cs_prog_data->push.cross_thread.regs); unsigned src = cs_prog_data->push.cross_thread.dwords; for ( ; src < prog_data->nr_params; src++, dst++) { if (src != cs_prog_data->thread_local_id_index) param[dst] = *prog_data->param[src]; else { thread_id.u = t * cs_prog_data->simd_size; param[dst] = thread_id; } } } } stage_state->push_const_size = cs_prog_data->push.cross_thread.regs + cs_prog_data->push.per_thread.regs; } static void gen7_upload_cs_push_constants(struct brw_context *brw) { struct brw_stage_state *stage_state = &brw->cs.base; /* BRW_NEW_COMPUTE_PROGRAM */ const struct brw_compute_program *cp = (struct brw_compute_program *) brw->compute_program; if (cp) { /* CACHE_NEW_CS_PROG */ struct brw_cs_prog_data *cs_prog_data = brw->cs.prog_data; _mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_COMPUTE); brw_upload_cs_push_constants(brw, &cp->program.Base, cs_prog_data, stage_state, AUB_TRACE_WM_CONSTANTS); } } const struct brw_tracked_state gen7_cs_push_constants = { .dirty = { .mesa = _NEW_PROGRAM_CONSTANTS, .brw = BRW_NEW_BATCH | BRW_NEW_BLORP | BRW_NEW_COMPUTE_PROGRAM | BRW_NEW_PUSH_CONSTANT_ALLOCATION, }, .emit = gen7_upload_cs_push_constants, }; /** * Creates a new CS constant buffer reflecting the current CS program's * constants, if needed by the CS program. */ static void brw_upload_cs_pull_constants(struct brw_context *brw) { struct brw_stage_state *stage_state = &brw->cs.base; /* BRW_NEW_COMPUTE_PROGRAM */ struct brw_compute_program *cp = (struct brw_compute_program *) brw->compute_program; /* BRW_NEW_CS_PROG_DATA */ const struct brw_stage_prog_data *prog_data = &brw->cs.prog_data->base; _mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_COMPUTE); /* _NEW_PROGRAM_CONSTANTS */ brw_upload_pull_constants(brw, BRW_NEW_SURFACES, &cp->program.Base, stage_state, prog_data); } const struct brw_tracked_state brw_cs_pull_constants = { .dirty = { .mesa = _NEW_PROGRAM_CONSTANTS, .brw = BRW_NEW_BATCH | BRW_NEW_BLORP | BRW_NEW_COMPUTE_PROGRAM | BRW_NEW_CS_PROG_DATA, }, .emit = brw_upload_cs_pull_constants, };