src/amd/vulkan/radv_shader.c

   1 /*
   2  * Copyright © 2016 Red Hat.
   3  * Copyright © 2016 Bas Nieuwenhuizen
   4  *
   5  * based in part on anv driver which is:
   6  * Copyright © 2015 Intel Corporation
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  24  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  25  * IN THE SOFTWARE.
  26  */
  27
  28 #include "util/mesa-sha1.h"
  29 #include "util/u_atomic.h"
  30 #include "radv_debug.h"
  31 #include "radv_private.h"
  32 #include "radv_shader.h"
  33 #include "radv_shader_helper.h"
  34 #include "nir/nir.h"
  35 #include "nir/nir_builder.h"
  36 #include "spirv/nir_spirv.h"
  37
  38 #include <llvm-c/Core.h>
  39 #include <llvm-c/TargetMachine.h>
  40 #include <llvm-c/Support.h>
  41
  42 #include "sid.h"
  43 #include "gfx9d.h"
  44 #include "ac_binary.h"
  45 #include "ac_llvm_util.h"
  46 #include "ac_nir_to_llvm.h"
  47 #include "vk_format.h"
  48 #include "util/debug.h"
  49 #include "ac_exp_param.h"
  50
  51 #include "util/string_buffer.h"
  52
  53 static const struct nir_shader_compiler_options nir_options = {
  54         .vertex_id_zero_based = true,
  55         .lower_scmp = true,
  56         .lower_flrp32 = true,
  57         .lower_flrp64 = true,
  58         .lower_device_index_to_zero = true,
  59         .lower_fsat = true,
  60         .lower_fdiv = true,
  61         .lower_sub = true,
  62         .lower_pack_snorm_2x16 = true,
  63         .lower_pack_snorm_4x8 = true,
  64         .lower_pack_unorm_2x16 = true,
  65         .lower_pack_unorm_4x8 = true,
  66         .lower_unpack_snorm_2x16 = true,
  67         .lower_unpack_snorm_4x8 = true,
  68         .lower_unpack_unorm_2x16 = true,
  69         .lower_unpack_unorm_4x8 = true,
  70         .lower_extract_byte = true,
  71         .lower_extract_word = true,
  72         .lower_ffma = true,
  73         .lower_fpow = true,
  74         .max_unroll_iterations = 32
  75 };
  76
  77 VkResult radv_CreateShaderModule(
  78         VkDevice                                    _device,
  79         const VkShaderModuleCreateInfo*             pCreateInfo,
  80         const VkAllocationCallbacks*                pAllocator,
  81         VkShaderModule*                             pShaderModule)
  82 {
  83         RADV_FROM_HANDLE(radv_device, device, _device);
  84         struct radv_shader_module *module;
  85
  86         assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO);
  87         assert(pCreateInfo->flags == 0);
  88
  89         module = vk_alloc2(&device->alloc, pAllocator,
  90                              sizeof(*module) + pCreateInfo->codeSize, 8,
  91                              VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
  92         if (module == NULL)
  93                 return vk_error(device->instance, VK_ERROR_OUT_OF_HOST_MEMORY);
  94
  95         module->nir = NULL;
  96         module->size = pCreateInfo->codeSize;
  97         memcpy(module->data, pCreateInfo->pCode, module->size);
  98
  99         _mesa_sha1_compute(module->data, module->size, module->sha1);
 100
 101         *pShaderModule = radv_shader_module_to_handle(module);
 102
 103         return VK_SUCCESS;
 104 }
 105
 106 void radv_DestroyShaderModule(
 107         VkDevice                                    _device,
 108         VkShaderModule                              _module,
 109         const VkAllocationCallbacks*                pAllocator)
 110 {
 111         RADV_FROM_HANDLE(radv_device, device, _device);
 112         RADV_FROM_HANDLE(radv_shader_module, module, _module);
 113
 114         if (!module)
 115                 return;
 116
 117         vk_free2(&device->alloc, pAllocator, module);
 118 }
 119
 120 void
 121 radv_optimize_nir(struct nir_shader *shader, bool optimize_conservatively,
 122                   bool allow_copies)
 123 {
 124         bool progress;
 125
 126         do {
 127                 progress = false;
 128
 129                 NIR_PASS(progress, shader, nir_split_array_vars, nir_var_local);
 130                 NIR_PASS(progress, shader, nir_shrink_vec_array_vars, nir_var_local);
 131
 132                 NIR_PASS_V(shader, nir_lower_vars_to_ssa);
 133                 NIR_PASS_V(shader, nir_lower_pack);
 134
 135                 if (allow_copies) {
 136                         /* Only run this pass in the first call to
 137                          * radv_optimize_nir.  Later calls assume that we've
 138                          * lowered away any copy_deref instructions and we
 139                          *  don't want to introduce any more.
 140                         */
 141                         NIR_PASS(progress, shader, nir_opt_find_array_copies);
 142                 }
 143
 144                 NIR_PASS(progress, shader, nir_opt_copy_prop_vars);
 145                 NIR_PASS(progress, shader, nir_opt_dead_write_vars);
 146
 147                 NIR_PASS_V(shader, nir_lower_alu_to_scalar);
 148                 NIR_PASS_V(shader, nir_lower_phis_to_scalar);
 149
 150                 NIR_PASS(progress, shader, nir_copy_prop);
 151                 NIR_PASS(progress, shader, nir_opt_remove_phis);
 152                 NIR_PASS(progress, shader, nir_opt_dce);
 153                 if (nir_opt_trivial_continues(shader)) {
 154                         progress = true;
 155                         NIR_PASS(progress, shader, nir_copy_prop);
 156                         NIR_PASS(progress, shader, nir_opt_remove_phis);
 157                         NIR_PASS(progress, shader, nir_opt_dce);
 158                 }
 159                 NIR_PASS(progress, shader, nir_opt_if);
 160                 NIR_PASS(progress, shader, nir_opt_dead_cf);
 161                 NIR_PASS(progress, shader, nir_opt_cse);
 162                 NIR_PASS(progress, shader, nir_opt_peephole_select, 8, true, true);
 163                 NIR_PASS(progress, shader, nir_opt_algebraic);
 164                 NIR_PASS(progress, shader, nir_opt_constant_folding);
 165                 NIR_PASS(progress, shader, nir_opt_undef);
 166                 NIR_PASS(progress, shader, nir_opt_conditional_discard);
 167                 if (shader->options->max_unroll_iterations) {
 168                         NIR_PASS(progress, shader, nir_opt_loop_unroll, 0);
 169                 }
 170         } while (progress && !optimize_conservatively);
 171
 172         NIR_PASS(progress, shader, nir_opt_shrink_load);
 173         NIR_PASS(progress, shader, nir_opt_move_load_ubo);
 174 }
 175
 176 nir_shader *
 177 radv_shader_compile_to_nir(struct radv_device *device,
 178                            struct radv_shader_module *module,
 179                            const char *entrypoint_name,
 180                            gl_shader_stage stage,
 181                            const VkSpecializationInfo *spec_info,
 182                            const VkPipelineCreateFlags flags)
 183 {
 184         nir_shader *nir;
 185         nir_function *entry_point;
 186         if (module->nir) {
 187                 /* Some things such as our meta clear/blit code will give us a NIR
 188                  * shader directly.  In that case, we just ignore the SPIR-V entirely
 189                  * and just use the NIR shader */
 190                 nir = module->nir;
 191                 nir->options = &nir_options;
 192                 nir_validate_shader(nir, "in internal shader");
 193
 194                 assert(exec_list_length(&nir->functions) == 1);
 195                 struct exec_node *node = exec_list_get_head(&nir->functions);
 196                 entry_point = exec_node_data(nir_function, node, node);
 197         } else {
 198                 uint32_t *spirv = (uint32_t *) module->data;
 199                 assert(module->size % 4 == 0);
 200
 201                 if (device->instance->debug_flags & RADV_DEBUG_DUMP_SPIRV)
 202                         radv_print_spirv(spirv, module->size, stderr);
 203
 204                 uint32_t num_spec_entries = 0;
 205                 struct nir_spirv_specialization *spec_entries = NULL;
 206                 if (spec_info && spec_info->mapEntryCount > 0) {
 207                         num_spec_entries = spec_info->mapEntryCount;
 208                         spec_entries = malloc(num_spec_entries * sizeof(*spec_entries));
 209                         for (uint32_t i = 0; i < num_spec_entries; i++) {
 210                                 VkSpecializationMapEntry entry = spec_info->pMapEntries[i];
 211                                 const void *data = spec_info->pData + entry.offset;
 212                                 assert(data + entry.size <= spec_info->pData + spec_info->dataSize);
 213
 214                                 spec_entries[i].id = spec_info->pMapEntries[i].constantID;
 215                                 if (spec_info->dataSize == 8)
 216                                         spec_entries[i].data64 = *(const uint64_t *)data;
 217                                 else
 218                                         spec_entries[i].data32 = *(const uint32_t *)data;
 219                         }
 220                 }
 221                 const struct spirv_to_nir_options spirv_options = {
 222                         .lower_ubo_ssbo_access_to_offsets = true,
 223                         .caps = {
 224                                 .device_group = true,
 225                                 .draw_parameters = true,
 226                                 .float64 = true,
 227                                 .image_read_without_format = true,
 228                                 .image_write_without_format = true,
 229                                 .tessellation = true,
 230                                 .int64 = true,
 231                                 .int16 = true,
 232                                 .multiview = true,
 233                                 .subgroup_arithmetic = true,
 234                                 .subgroup_ballot = true,
 235                                 .subgroup_basic = true,
 236                                 .subgroup_quad = true,
 237                                 .subgroup_shuffle = true,
 238                                 .subgroup_vote = true,
 239                                 .variable_pointers = true,
 240                                 .gcn_shader = true,
 241                                 .trinary_minmax = true,
 242                                 .shader_viewport_index_layer = true,
 243                                 .descriptor_array_dynamic_indexing = true,
 244                                 .runtime_descriptor_array = true,
 245                                 .stencil_export = true,
 246                                 .storage_16bit = true,
 247                                 .geometry_streams = true,
 248                                 .transform_feedback = true,
 249                                 .storage_image_ms = true,
 250                         },
 251                         .ubo_ptr_type = glsl_vector_type(GLSL_TYPE_UINT, 2),
 252                         .ssbo_ptr_type = glsl_vector_type(GLSL_TYPE_UINT, 2),
 253                         .push_const_ptr_type = glsl_uint_type(),
 254                         .shared_ptr_type = glsl_uint_type(),
 255                 };
 256                 entry_point = spirv_to_nir(spirv, module->size / 4,
 257                                            spec_entries, num_spec_entries,
 258                                            stage, entrypoint_name,
 259                                            &spirv_options, &nir_options);
 260                 nir = entry_point->shader;
 261                 assert(nir->info.stage == stage);
 262                 nir_validate_shader(nir, "after spirv_to_nir");
 263
 264                 free(spec_entries);
 265
 266                 /* We have to lower away local constant initializers right before we
 267                  * inline functions.  That way they get properly initialized at the top
 268                  * of the function and not at the top of its caller.
 269                  */
 270                 NIR_PASS_V(nir, nir_lower_constant_initializers, nir_var_local);
 271                 NIR_PASS_V(nir, nir_lower_returns);
 272                 NIR_PASS_V(nir, nir_inline_functions);
 273                 NIR_PASS_V(nir, nir_opt_deref);
 274
 275                 /* Pick off the single entrypoint that we want */
 276                 foreach_list_typed_safe(nir_function, func, node, &nir->functions) {
 277                         if (func != entry_point)
 278                                 exec_node_remove(&func->node);
 279                 }
 280                 assert(exec_list_length(&nir->functions) == 1);
 281                 entry_point->name = ralloc_strdup(entry_point, "main");
 282
 283                 /* Make sure we lower constant initializers on output variables so that
 284                  * nir_remove_dead_variables below sees the corresponding stores
 285                  */
 286                 NIR_PASS_V(nir, nir_lower_constant_initializers, nir_var_shader_out);
 287
 288                 /* Now that we've deleted all but the main function, we can go ahead and
 289                  * lower the rest of the constant initializers.
 290                  */
 291                 NIR_PASS_V(nir, nir_lower_constant_initializers, ~0);
 292
 293                 /* Split member structs.  We do this before lower_io_to_temporaries so that
 294                  * it doesn't lower system values to temporaries by accident.
 295                  */
 296                 NIR_PASS_V(nir, nir_split_var_copies);
 297                 NIR_PASS_V(nir, nir_split_per_member_structs);
 298
 299                 NIR_PASS_V(nir, nir_remove_dead_variables,
 300                            nir_var_shader_in | nir_var_shader_out | nir_var_system_value);
 301
 302                 NIR_PASS_V(nir, nir_lower_system_values);
 303                 NIR_PASS_V(nir, nir_lower_clip_cull_distance_arrays);
 304         }
 305
 306         /* Vulkan uses the separate-shader linking model */
 307         nir->info.separate_shader = true;
 308
 309         nir_shader_gather_info(nir, entry_point->impl);
 310
 311         static const nir_lower_tex_options tex_options = {
 312           .lower_txp = ~0,
 313         };
 314
 315         nir_lower_tex(nir, &tex_options);
 316
 317         nir_lower_vars_to_ssa(nir);
 318
 319         if (nir->info.stage == MESA_SHADER_VERTEX ||
 320             nir->info.stage == MESA_SHADER_GEOMETRY) {
 321                 NIR_PASS_V(nir, nir_lower_io_to_temporaries,
 322                            nir_shader_get_entrypoint(nir), true, true);
 323         } else if (nir->info.stage == MESA_SHADER_TESS_EVAL||
 324                    nir->info.stage == MESA_SHADER_FRAGMENT) {
 325                 NIR_PASS_V(nir, nir_lower_io_to_temporaries,
 326                            nir_shader_get_entrypoint(nir), true, false);
 327         }
 328
 329         nir_split_var_copies(nir);
 330
 331         nir_lower_global_vars_to_local(nir);
 332         nir_remove_dead_variables(nir, nir_var_local);
 333         nir_lower_subgroups(nir, &(struct nir_lower_subgroups_options) {
 334                         .subgroup_size = 64,
 335                         .ballot_bit_size = 64,
 336                         .lower_to_scalar = 1,
 337                         .lower_subgroup_masks = 1,
 338                         .lower_shuffle = 1,
 339                         .lower_shuffle_to_32bit = 1,
 340                         .lower_vote_eq_to_ballot = 1,
 341                 });
 342
 343         nir_lower_load_const_to_scalar(nir);
 344
 345         if (!(flags & VK_PIPELINE_CREATE_DISABLE_OPTIMIZATION_BIT))
 346                 radv_optimize_nir(nir, false, true);
 347
 348         /* We call nir_lower_var_copies() after the first radv_optimize_nir()
 349          * to remove any copies introduced by nir_opt_find_array_copies().
 350          */
 351         nir_lower_var_copies(nir);
 352
 353         /* Indirect lowering must be called after the radv_optimize_nir() loop
 354          * has been called at least once. Otherwise indirect lowering can
 355          * bloat the instruction count of the loop and cause it to be
 356          * considered too large for unrolling.
 357          */
 358         ac_lower_indirect_derefs(nir, device->physical_device->rad_info.chip_class);
 359         radv_optimize_nir(nir, flags & VK_PIPELINE_CREATE_DISABLE_OPTIMIZATION_BIT, false);
 360
 361         return nir;
 362 }
 363
 364 void *
 365 radv_alloc_shader_memory(struct radv_device *device,
 366                          struct radv_shader_variant *shader)
 367 {
 368         mtx_lock(&device->shader_slab_mutex);
 369         list_for_each_entry(struct radv_shader_slab, slab, &device->shader_slabs, slabs) {
 370                 uint64_t offset = 0;
 371                 list_for_each_entry(struct radv_shader_variant, s, &slab->shaders, slab_list) {
 372                         if (s->bo_offset - offset >= shader->code_size) {
 373                                 shader->bo = slab->bo;
 374                                 shader->bo_offset = offset;
 375                                 list_addtail(&shader->slab_list, &s->slab_list);
 376                                 mtx_unlock(&device->shader_slab_mutex);
 377                                 return slab->ptr + offset;
 378                         }
 379                         offset = align_u64(s->bo_offset + s->code_size, 256);
 380                 }
 381                 if (slab->size - offset >= shader->code_size) {
 382                         shader->bo = slab->bo;
 383                         shader->bo_offset = offset;
 384                         list_addtail(&shader->slab_list, &slab->shaders);
 385                         mtx_unlock(&device->shader_slab_mutex);
 386                         return slab->ptr + offset;
 387                 }
 388         }
 389
 390         mtx_unlock(&device->shader_slab_mutex);
 391         struct radv_shader_slab *slab = calloc(1, sizeof(struct radv_shader_slab));
 392
 393         slab->size = 256 * 1024;
 394         slab->bo = device->ws->buffer_create(device->ws, slab->size, 256,
 395                                              RADEON_DOMAIN_VRAM,
 396                                              RADEON_FLAG_NO_INTERPROCESS_SHARING |
 397                                              (device->physical_device->cpdma_prefetch_writes_memory ?
 398                                                      0 : RADEON_FLAG_READ_ONLY));
 399         slab->ptr = (char*)device->ws->buffer_map(slab->bo);
 400         list_inithead(&slab->shaders);
 401
 402         mtx_lock(&device->shader_slab_mutex);
 403         list_add(&slab->slabs, &device->shader_slabs);
 404
 405         shader->bo = slab->bo;
 406         shader->bo_offset = 0;
 407         list_add(&shader->slab_list, &slab->shaders);
 408         mtx_unlock(&device->shader_slab_mutex);
 409         return slab->ptr;
 410 }
 411
 412 void
 413 radv_destroy_shader_slabs(struct radv_device *device)
 414 {
 415         list_for_each_entry_safe(struct radv_shader_slab, slab, &device->shader_slabs, slabs) {
 416                 device->ws->buffer_destroy(slab->bo);
 417                 free(slab);
 418         }
 419         mtx_destroy(&device->shader_slab_mutex);
 420 }
 421
 422 /* For the UMR disassembler. */
 423 #define DEBUGGER_END_OF_CODE_MARKER    0xbf9f0000 /* invalid instruction */
 424 #define DEBUGGER_NUM_MARKERS           5
 425
 426 static unsigned
 427 radv_get_shader_binary_size(struct ac_shader_binary *binary)
 428 {
 429         return binary->code_size + DEBUGGER_NUM_MARKERS * 4;
 430 }
 431
 432 static void
 433 radv_fill_shader_variant(struct radv_device *device,
 434                          struct radv_shader_variant *variant,
 435                          struct ac_shader_binary *binary,
 436                          gl_shader_stage stage)
 437 {
 438         bool scratch_enabled = variant->config.scratch_bytes_per_wave > 0;
 439         struct radv_shader_info *info = &variant->info.info;
 440         unsigned vgpr_comp_cnt = 0;
 441
 442         variant->code_size = radv_get_shader_binary_size(binary);
 443         variant->rsrc2 = S_00B12C_USER_SGPR(variant->info.num_user_sgprs) |
 444                          S_00B12C_USER_SGPR_MSB(variant->info.num_user_sgprs >> 5) |
 445                          S_00B12C_SCRATCH_EN(scratch_enabled) |
 446                          S_00B12C_SO_BASE0_EN(!!info->so.strides[0]) |
 447                          S_00B12C_SO_BASE1_EN(!!info->so.strides[1]) |
 448                          S_00B12C_SO_BASE2_EN(!!info->so.strides[2]) |
 449                          S_00B12C_SO_BASE3_EN(!!info->so.strides[3]) |
 450                          S_00B12C_SO_EN(!!info->so.num_outputs);
 451
 452         variant->rsrc1 = S_00B848_VGPRS((variant->config.num_vgprs - 1) / 4) |
 453                 S_00B848_SGPRS((variant->config.num_sgprs - 1) / 8) |
 454                 S_00B848_DX10_CLAMP(1) |
 455                 S_00B848_FLOAT_MODE(variant->config.float_mode);
 456
 457         switch (stage) {
 458         case MESA_SHADER_TESS_EVAL:
 459                 vgpr_comp_cnt = 3;
 460                 variant->rsrc2 |= S_00B12C_OC_LDS_EN(1);
 461                 break;
 462         case MESA_SHADER_TESS_CTRL:
 463                 if (device->physical_device->rad_info.chip_class >= GFX9) {
 464                         vgpr_comp_cnt = variant->info.vs.vgpr_comp_cnt;
 465                 } else {
 466                         variant->rsrc2 |= S_00B12C_OC_LDS_EN(1);
 467                 }
 468                 break;
 469         case MESA_SHADER_VERTEX:
 470         case MESA_SHADER_GEOMETRY:
 471                 vgpr_comp_cnt = variant->info.vs.vgpr_comp_cnt;
 472                 break;
 473         case MESA_SHADER_FRAGMENT:
 474                 break;
 475         case MESA_SHADER_COMPUTE:
 476                 variant->rsrc2 |=
 477                         S_00B84C_TGID_X_EN(info->cs.uses_block_id[0]) |
 478                         S_00B84C_TGID_Y_EN(info->cs.uses_block_id[1]) |
 479                         S_00B84C_TGID_Z_EN(info->cs.uses_block_id[2]) |
 480                         S_00B84C_TIDIG_COMP_CNT(info->cs.uses_thread_id[2] ? 2 :
 481                                                 info->cs.uses_thread_id[1] ? 1 : 0) |
 482                         S_00B84C_TG_SIZE_EN(info->cs.uses_local_invocation_idx) |
 483                         S_00B84C_LDS_SIZE(variant->config.lds_size);
 484                 break;
 485         default:
 486                 unreachable("unsupported shader type");
 487                 break;
 488         }
 489
 490         if (device->physical_device->rad_info.chip_class >= GFX9 &&
 491             stage == MESA_SHADER_GEOMETRY) {
 492                 unsigned es_type = variant->info.gs.es_type;
 493                 unsigned gs_vgpr_comp_cnt, es_vgpr_comp_cnt;
 494
 495                 if (es_type == MESA_SHADER_VERTEX) {
 496                         es_vgpr_comp_cnt = variant->info.vs.vgpr_comp_cnt;
 497                 } else if (es_type == MESA_SHADER_TESS_EVAL) {
 498                         es_vgpr_comp_cnt = 3;
 499                 } else {
 500                         unreachable("invalid shader ES type");
 501                 }
 502
 503                 /* If offsets 4, 5 are used, GS_VGPR_COMP_CNT is ignored and
 504                  * VGPR[0:4] are always loaded.
 505                  */
 506                 if (info->uses_invocation_id) {
 507                         gs_vgpr_comp_cnt = 3; /* VGPR3 contains InvocationID. */
 508                 } else if (info->uses_prim_id) {
 509                         gs_vgpr_comp_cnt = 2; /* VGPR2 contains PrimitiveID. */
 510                 } else if (variant->info.gs.vertices_in >= 3) {
 511                         gs_vgpr_comp_cnt = 1; /* VGPR1 contains offsets 2, 3 */
 512                 } else {
 513                         gs_vgpr_comp_cnt = 0; /* VGPR0 contains offsets 0, 1 */
 514                 }
 515
 516                 variant->rsrc1 |= S_00B228_GS_VGPR_COMP_CNT(gs_vgpr_comp_cnt);
 517                 variant->rsrc2 |= S_00B22C_ES_VGPR_COMP_CNT(es_vgpr_comp_cnt) |
 518                                   S_00B22C_OC_LDS_EN(es_type == MESA_SHADER_TESS_EVAL);
 519         } else if (device->physical_device->rad_info.chip_class >= GFX9 &&
 520                    stage == MESA_SHADER_TESS_CTRL) {
 521                 variant->rsrc1 |= S_00B428_LS_VGPR_COMP_CNT(vgpr_comp_cnt);
 522         } else {
 523                 variant->rsrc1 |= S_00B128_VGPR_COMP_CNT(vgpr_comp_cnt);
 524         }
 525
 526         void *ptr = radv_alloc_shader_memory(device, variant);
 527         memcpy(ptr, binary->code, binary->code_size);
 528
 529         /* Add end-of-code markers for the UMR disassembler. */
 530        uint32_t *ptr32 = (uint32_t *)ptr + binary->code_size / 4;
 531        for (unsigned i = 0; i < DEBUGGER_NUM_MARKERS; i++)
 532                 ptr32[i] = DEBUGGER_END_OF_CODE_MARKER;
 533
 534 }
 535
 536 static void radv_init_llvm_target()
 537 {
 538         LLVMInitializeAMDGPUTargetInfo();
 539         LLVMInitializeAMDGPUTarget();
 540         LLVMInitializeAMDGPUTargetMC();
 541         LLVMInitializeAMDGPUAsmPrinter();
 542
 543         /* For inline assembly. */
 544         LLVMInitializeAMDGPUAsmParser();
 545
 546         /* Workaround for bug in llvm 4.0 that causes image intrinsics
 547          * to disappear.
 548          * https://reviews.llvm.org/D26348
 549          *
 550          * Workaround for bug in llvm that causes the GPU to hang in presence
 551          * of nested loops because there is an exec mask issue. The proper
 552          * solution is to fix LLVM but this might require a bunch of work.
 553          * https://bugs.llvm.org/show_bug.cgi?id=37744
 554          *
 555          * "mesa" is the prefix for error messages.
 556          */
 557         if (HAVE_LLVM >= 0x0800) {
 558                 const char *argv[2] = { "mesa", "-simplifycfg-sink-common=false" };
 559                 LLVMParseCommandLineOptions(2, argv, NULL);
 560
 561         } else {
 562                 const char *argv[3] = { "mesa", "-simplifycfg-sink-common=false",
 563                                         "-amdgpu-skip-threshold=1" };
 564                 LLVMParseCommandLineOptions(3, argv, NULL);
 565         }
 566 }
 567
 568 static once_flag radv_init_llvm_target_once_flag = ONCE_FLAG_INIT;
 569
 570 static void radv_init_llvm_once(void)
 571 {
 572         call_once(&radv_init_llvm_target_once_flag, radv_init_llvm_target);
 573 }
 574
 575 static struct radv_shader_variant *
 576 shader_variant_create(struct radv_device *device,
 577                       struct radv_shader_module *module,
 578                       struct nir_shader * const *shaders,
 579                       int shader_count,
 580                       gl_shader_stage stage,
 581                       struct radv_nir_compiler_options *options,
 582                       bool gs_copy_shader,
 583                       void **code_out,
 584                       unsigned *code_size_out)
 585 {
 586         enum radeon_family chip_family = device->physical_device->rad_info.family;
 587         enum ac_target_machine_options tm_options = 0;
 588         struct radv_shader_variant *variant;
 589         struct ac_shader_binary binary;
 590         struct ac_llvm_compiler ac_llvm;
 591         bool thread_compiler;
 592         variant = calloc(1, sizeof(struct radv_shader_variant));
 593         if (!variant)
 594                 return NULL;
 595
 596         options->family = chip_family;
 597         options->chip_class = device->physical_device->rad_info.chip_class;
 598         options->dump_shader = radv_can_dump_shader(device, module, gs_copy_shader);
 599         options->dump_preoptir = options->dump_shader &&
 600                                  device->instance->debug_flags & RADV_DEBUG_PREOPTIR;
 601         options->record_llvm_ir = device->keep_shader_info;
 602         options->check_ir = device->instance->debug_flags & RADV_DEBUG_CHECKIR;
 603         options->tess_offchip_block_dw_size = device->tess_offchip_block_dw_size;
 604         options->address32_hi = device->physical_device->rad_info.address32_hi;
 605
 606         if (options->supports_spill)
 607                 tm_options |= AC_TM_SUPPORTS_SPILL;
 608         if (device->instance->perftest_flags & RADV_PERFTEST_SISCHED)
 609                 tm_options |= AC_TM_SISCHED;
 610         if (options->check_ir)
 611                 tm_options |= AC_TM_CHECK_IR;
 612
 613         thread_compiler = !(device->instance->debug_flags & RADV_DEBUG_NOTHREADLLVM);
 614         radv_init_llvm_once();
 615         radv_init_llvm_compiler(&ac_llvm,
 616                                 thread_compiler,
 617                                 chip_family, tm_options);
 618         if (gs_copy_shader) {
 619                 assert(shader_count == 1);
 620                 radv_compile_gs_copy_shader(&ac_llvm, *shaders, &binary,
 621                                             &variant->config, &variant->info,
 622                                             options);
 623         } else {
 624                 radv_compile_nir_shader(&ac_llvm, &binary, &variant->config,
 625                                         &variant->info, shaders, shader_count,
 626                                         options);
 627         }
 628
 629         radv_destroy_llvm_compiler(&ac_llvm, thread_compiler);
 630
 631         radv_fill_shader_variant(device, variant, &binary, stage);
 632
 633         if (code_out) {
 634                 *code_out = binary.code;
 635                 *code_size_out = binary.code_size;
 636         } else
 637                 free(binary.code);
 638         free(binary.config);
 639         free(binary.rodata);
 640         free(binary.global_symbol_offsets);
 641         free(binary.relocs);
 642         variant->ref_count = 1;
 643
 644         if (device->keep_shader_info) {
 645                 variant->disasm_string = binary.disasm_string;
 646                 variant->llvm_ir_string = binary.llvm_ir_string;
 647                 if (!gs_copy_shader && !module->nir) {
 648                         variant->nir = *shaders;
 649                         variant->spirv = (uint32_t *)module->data;
 650                         variant->spirv_size = module->size;
 651                 }
 652         } else {
 653                 free(binary.disasm_string);
 654         }
 655
 656         return variant;
 657 }
 658
 659 struct radv_shader_variant *
 660 radv_shader_variant_create(struct radv_device *device,
 661                            struct radv_shader_module *module,
 662                            struct nir_shader *const *shaders,
 663                            int shader_count,
 664                            struct radv_pipeline_layout *layout,
 665                            const struct radv_shader_variant_key *key,
 666                            void **code_out,
 667                            unsigned *code_size_out)
 668 {
 669         struct radv_nir_compiler_options options = {0};
 670
 671         options.layout = layout;
 672         if (key)
 673                 options.key = *key;
 674
 675         options.unsafe_math = !!(device->instance->debug_flags & RADV_DEBUG_UNSAFE_MATH);
 676         options.supports_spill = true;
 677
 678         return shader_variant_create(device, module, shaders, shader_count, shaders[shader_count - 1]->info.stage,
 679                                      &options, false, code_out, code_size_out);
 680 }
 681
 682 struct radv_shader_variant *
 683 radv_create_gs_copy_shader(struct radv_device *device,
 684                            struct nir_shader *shader,
 685                            void **code_out,
 686                            unsigned *code_size_out,
 687                            bool multiview)
 688 {
 689         struct radv_nir_compiler_options options = {0};
 690
 691         options.key.has_multiview_view_index = multiview;
 692
 693         return shader_variant_create(device, NULL, &shader, 1, MESA_SHADER_VERTEX,
 694                                      &options, true, code_out, code_size_out);
 695 }
 696
 697 void
 698 radv_shader_variant_destroy(struct radv_device *device,
 699                             struct radv_shader_variant *variant)
 700 {
 701         if (!p_atomic_dec_zero(&variant->ref_count))
 702                 return;
 703
 704         mtx_lock(&device->shader_slab_mutex);
 705         list_del(&variant->slab_list);
 706         mtx_unlock(&device->shader_slab_mutex);
 707
 708         ralloc_free(variant->nir);
 709         free(variant->disasm_string);
 710         free(variant->llvm_ir_string);
 711         free(variant);
 712 }
 713
 714 const char *
 715 radv_get_shader_name(struct radv_shader_variant *var, gl_shader_stage stage)
 716 {
 717         switch (stage) {
 718         case MESA_SHADER_VERTEX: return var->info.vs.as_ls ? "Vertex Shader as LS" : var->info.vs.as_es ? "Vertex Shader as ES" : "Vertex Shader as VS";
 719         case MESA_SHADER_GEOMETRY: return "Geometry Shader";
 720         case MESA_SHADER_FRAGMENT: return "Pixel Shader";
 721         case MESA_SHADER_COMPUTE: return "Compute Shader";
 722         case MESA_SHADER_TESS_CTRL: return "Tessellation Control Shader";
 723         case MESA_SHADER_TESS_EVAL: return var->info.tes.as_es ? "Tessellation Evaluation Shader as ES" : "Tessellation Evaluation Shader as VS";
 724         default:
 725                 return "Unknown shader";
 726         };
 727 }
 728
 729 static void
 730 generate_shader_stats(struct radv_device *device,
 731                       struct radv_shader_variant *variant,
 732                       gl_shader_stage stage,
 733                       struct _mesa_string_buffer *buf)
 734 {
 735         unsigned lds_increment = device->physical_device->rad_info.chip_class >= CIK ? 512 : 256;
 736         struct ac_shader_config *conf;
 737         unsigned max_simd_waves;
 738         unsigned lds_per_wave = 0;
 739
 740         max_simd_waves = ac_get_max_simd_waves(device->physical_device->rad_info.family);
 741
 742         conf = &variant->config;
 743
 744         if (stage == MESA_SHADER_FRAGMENT) {
 745                 lds_per_wave = conf->lds_size * lds_increment +
 746                                align(variant->info.fs.num_interp * 48,
 747                                      lds_increment);
 748         }
 749
 750         if (conf->num_sgprs)
 751                 max_simd_waves =
 752                         MIN2(max_simd_waves,
 753                              radv_get_num_physical_sgprs(device->physical_device) / conf->num_sgprs);
 754
 755         if (conf->num_vgprs)
 756                 max_simd_waves =
 757                         MIN2(max_simd_waves,
 758                              RADV_NUM_PHYSICAL_VGPRS / conf->num_vgprs);
 759
 760         /* LDS is 64KB per CU (4 SIMDs), divided into 16KB blocks per SIMD
 761          * that PS can use.
 762          */
 763         if (lds_per_wave)
 764                 max_simd_waves = MIN2(max_simd_waves, 16384 / lds_per_wave);
 765
 766         if (stage == MESA_SHADER_FRAGMENT) {
 767                 _mesa_string_buffer_printf(buf, "*** SHADER CONFIG ***\n"
 768                                            "SPI_PS_INPUT_ADDR = 0x%04x\n"
 769                                            "SPI_PS_INPUT_ENA  = 0x%04x\n",
 770                                            conf->spi_ps_input_addr, conf->spi_ps_input_ena);
 771         }
 772
 773         _mesa_string_buffer_printf(buf, "*** SHADER STATS ***\n"
 774                                    "SGPRS: %d\n"
 775                                    "VGPRS: %d\n"
 776                                    "Spilled SGPRs: %d\n"
 777                                    "Spilled VGPRs: %d\n"
 778                                    "PrivMem VGPRS: %d\n"
 779                                    "Code Size: %d bytes\n"
 780                                    "LDS: %d blocks\n"
 781                                    "Scratch: %d bytes per wave\n"
 782                                    "Max Waves: %d\n"
 783                                    "********************\n\n\n",
 784                                    conf->num_sgprs, conf->num_vgprs,
 785                                    conf->spilled_sgprs, conf->spilled_vgprs,
 786                                    variant->info.private_mem_vgprs, variant->code_size,
 787                                    conf->lds_size, conf->scratch_bytes_per_wave,
 788                                    max_simd_waves);
 789 }
 790
 791 void
 792 radv_shader_dump_stats(struct radv_device *device,
 793                        struct radv_shader_variant *variant,
 794                        gl_shader_stage stage,
 795                        FILE *file)
 796 {
 797         struct _mesa_string_buffer *buf = _mesa_string_buffer_create(NULL, 256);
 798
 799         generate_shader_stats(device, variant, stage, buf);
 800
 801         fprintf(file, "\n%s:\n", radv_get_shader_name(variant, stage));
 802         fprintf(file, "%s", buf->buf);
 803
 804         _mesa_string_buffer_destroy(buf);
 805 }
 806
 807 VkResult
 808 radv_GetShaderInfoAMD(VkDevice _device,
 809                       VkPipeline _pipeline,
 810                       VkShaderStageFlagBits shaderStage,
 811                       VkShaderInfoTypeAMD infoType,
 812                       size_t* pInfoSize,
 813                       void* pInfo)
 814 {
 815         RADV_FROM_HANDLE(radv_device, device, _device);
 816         RADV_FROM_HANDLE(radv_pipeline, pipeline, _pipeline);
 817         gl_shader_stage stage = vk_to_mesa_shader_stage(shaderStage);
 818         struct radv_shader_variant *variant = pipeline->shaders[stage];
 819         struct _mesa_string_buffer *buf;
 820         VkResult result = VK_SUCCESS;
 821
 822         /* Spec doesn't indicate what to do if the stage is invalid, so just
 823          * return no info for this. */
 824         if (!variant)
 825                 return vk_error(device->instance, VK_ERROR_FEATURE_NOT_PRESENT);
 826
 827         switch (infoType) {
 828         case VK_SHADER_INFO_TYPE_STATISTICS_AMD:
 829                 if (!pInfo) {
 830                         *pInfoSize = sizeof(VkShaderStatisticsInfoAMD);
 831                 } else {
 832                         unsigned lds_multiplier = device->physical_device->rad_info.chip_class >= CIK ? 512 : 256;
 833                         struct ac_shader_config *conf = &variant->config;
 834
 835                         VkShaderStatisticsInfoAMD statistics = {};
 836                         statistics.shaderStageMask = shaderStage;
 837                         statistics.numPhysicalVgprs = RADV_NUM_PHYSICAL_VGPRS;
 838                         statistics.numPhysicalSgprs = radv_get_num_physical_sgprs(device->physical_device);
 839                         statistics.numAvailableSgprs = statistics.numPhysicalSgprs;
 840
 841                         if (stage == MESA_SHADER_COMPUTE) {
 842                                 unsigned *local_size = variant->nir->info.cs.local_size;
 843                                 unsigned workgroup_size = local_size[0] * local_size[1] * local_size[2];
 844
 845                                 statistics.numAvailableVgprs = statistics.numPhysicalVgprs /
 846                                                                ceil((double)workgroup_size / statistics.numPhysicalVgprs);
 847
 848                                 statistics.computeWorkGroupSize[0] = local_size[0];
 849                                 statistics.computeWorkGroupSize[1] = local_size[1];
 850                                 statistics.computeWorkGroupSize[2] = local_size[2];
 851                         } else {
 852                                 statistics.numAvailableVgprs = statistics.numPhysicalVgprs;
 853                         }
 854
 855                         statistics.resourceUsage.numUsedVgprs = conf->num_vgprs;
 856                         statistics.resourceUsage.numUsedSgprs = conf->num_sgprs;
 857                         statistics.resourceUsage.ldsSizePerLocalWorkGroup = 32768;
 858                         statistics.resourceUsage.ldsUsageSizeInBytes = conf->lds_size * lds_multiplier;
 859                         statistics.resourceUsage.scratchMemUsageInBytes = conf->scratch_bytes_per_wave;
 860
 861                         size_t size = *pInfoSize;
 862                         *pInfoSize = sizeof(statistics);
 863
 864                         memcpy(pInfo, &statistics, MIN2(size, *pInfoSize));
 865
 866                         if (size < *pInfoSize)
 867                                 result = VK_INCOMPLETE;
 868                 }
 869
 870                 break;
 871         case VK_SHADER_INFO_TYPE_DISASSEMBLY_AMD:
 872                 buf = _mesa_string_buffer_create(NULL, 1024);
 873
 874                 _mesa_string_buffer_printf(buf, "%s:\n", radv_get_shader_name(variant, stage));
 875                 _mesa_string_buffer_printf(buf, "%s\n\n", variant->llvm_ir_string);
 876                 _mesa_string_buffer_printf(buf, "%s\n\n", variant->disasm_string);
 877                 generate_shader_stats(device, variant, stage, buf);
 878
 879                 /* Need to include the null terminator. */
 880                 size_t length = buf->length + 1;
 881
 882                 if (!pInfo) {
 883                         *pInfoSize = length;
 884                 } else {
 885                         size_t size = *pInfoSize;
 886                         *pInfoSize = length;
 887
 888                         memcpy(pInfo, buf->buf, MIN2(size, length));
 889
 890                         if (size < length)
 891                                 result = VK_INCOMPLETE;
 892                 }
 893
 894                 _mesa_string_buffer_destroy(buf);
 895                 break;
 896         default:
 897                 /* VK_SHADER_INFO_TYPE_BINARY_AMD unimplemented for now. */
 898                 result = VK_ERROR_FEATURE_NOT_PRESENT;
 899                 break;
 900         }
 901
 902         return result;
 903 }