src/gallium/drivers/radeonsi/si_shader_internal.h

   1 /*
   2  * Copyright 2016 Advanced Micro Devices, Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #ifndef SI_SHADER_PRIVATE_H
  26 #define SI_SHADER_PRIVATE_H
  27
  28 #include "si_shader.h"
  29 #include "gallivm/lp_bld_flow.h"
  30 #include "gallivm/lp_bld_init.h"
  31 #include "gallivm/lp_bld_tgsi.h"
  32 #include "tgsi/tgsi_parse.h"
  33 #include "ac_shader_abi.h"
  34 #include "ac_llvm_util.h"
  35 #include "ac_llvm_build.h"
  36
  37 #include <llvm-c/Core.h>
  38 #include <llvm-c/TargetMachine.h>
  39
  40 struct pipe_debug_callback;
  41 struct ac_shader_binary;
  42
  43 #define RADEON_LLVM_MAX_INPUT_SLOTS 32
  44 #define RADEON_LLVM_MAX_INPUTS 32 * 4
  45 #define RADEON_LLVM_MAX_OUTPUTS 32 * 4
  46
  47 #define RADEON_LLVM_MAX_SYSTEM_VALUES 11
  48 #define RADEON_LLVM_MAX_ADDRS 16
  49
  50 struct si_shader_context {
  51         struct lp_build_tgsi_context bld_base;
  52         struct gallivm_state gallivm;
  53         struct ac_llvm_context ac;
  54         struct si_shader *shader;
  55         struct si_screen *screen;
  56
  57         unsigned type; /* PIPE_SHADER_* specifies the type of shader. */
  58
  59         /* For clamping the non-constant index in resource indexing: */
  60         unsigned num_const_buffers;
  61         unsigned num_shader_buffers;
  62         unsigned num_images;
  63         unsigned num_samplers;
  64
  65         struct ac_shader_abi abi;
  66
  67         /** This function is responsible for initilizing the inputs array and will be
  68           * called once for each input declared in the TGSI shader.
  69           */
  70         void (*load_input)(struct si_shader_context *,
  71                            unsigned input_index,
  72                            const struct tgsi_full_declaration *decl,
  73                            LLVMValueRef out[4]);
  74
  75         /** This array contains the input values for the shader.  Typically these
  76           * values will be in the form of a target intrinsic that will inform the
  77           * backend how to load the actual inputs to the shader.
  78           */
  79         struct tgsi_full_declaration input_decls[RADEON_LLVM_MAX_INPUT_SLOTS];
  80         LLVMValueRef inputs[RADEON_LLVM_MAX_INPUTS];
  81         LLVMValueRef outputs[RADEON_LLVM_MAX_OUTPUTS][TGSI_NUM_CHANNELS];
  82         LLVMValueRef addrs[RADEON_LLVM_MAX_ADDRS][TGSI_NUM_CHANNELS];
  83
  84         /** This pointer is used to contain the temporary values.
  85           * The amount of temporary used in tgsi can't be bound to a max value and
  86           * thus we must allocate this array at runtime.
  87           */
  88         LLVMValueRef *temps;
  89         unsigned temps_count;
  90         LLVMValueRef system_values[RADEON_LLVM_MAX_SYSTEM_VALUES];
  91
  92         LLVMValueRef *imms;
  93         unsigned imms_num;
  94
  95         struct lp_build_if_state merged_wrap_if_state;
  96
  97         struct tgsi_array_info *temp_arrays;
  98         LLVMValueRef *temp_array_allocas;
  99
 100         LLVMValueRef undef_alloca;
 101
 102         LLVMValueRef main_fn;
 103         LLVMTypeRef return_type;
 104
 105         /* Parameter indices for LLVMGetParam. */
 106         int param_rw_buffers;
 107         int param_const_and_shader_buffers;
 108         int param_samplers_and_images;
 109         int param_bindless_samplers_and_images;
 110         /* Common inputs for merged shaders. */
 111         int param_merged_wave_info;
 112         int param_merged_scratch_offset;
 113         /* API VS */
 114         int param_vertex_buffers;
 115         int param_rel_auto_id;
 116         int param_vs_prim_id;
 117         int param_vertex_index0;
 118         /* VS states and layout of LS outputs / TCS inputs at the end
 119          *   [0] = clamp vertex color
 120          *   [1] = indexed
 121          *   [8:20] = stride between patches in DW = num_inputs * num_vertices * 4
 122          *            max = 32*32*4 + 32*4
 123          *   [24:31] = stride between vertices in DW = num_inputs * 4
 124          *             max = 32*4
 125          */
 126         int param_vs_state_bits;
 127         int param_vs_blit_inputs;
 128         /* HW VS */
 129         int param_streamout_config;
 130         int param_streamout_write_index;
 131         int param_streamout_offset[4];
 132
 133         /* API TCS & TES */
 134         /* Layout of TCS outputs in the offchip buffer
 135          * # 6 bits
 136          *   [0:5] = the number of patches per threadgroup, max = NUM_PATCHES (40)
 137          * # 6 bits
 138          *   [6:11] = the number of output vertices per patch, max = 32
 139          * # 20 bits
 140          *   [12:31] = the offset of per patch attributes in the buffer in bytes.
 141          *             max = NUM_PATCHES*32*32*16
 142          */
 143         int param_tcs_offchip_layout;
 144
 145         /* API TCS */
 146         /* Offsets where TCS outputs and TCS patch outputs live in LDS:
 147          *   [0:15] = TCS output patch0 offset / 16, max = NUM_PATCHES * 32 * 32
 148          *   [16:31] = TCS output patch0 offset for per-patch / 16
 149          *             max = (NUM_PATCHES + 1) * 32*32
 150          */
 151         int param_tcs_out_lds_offsets;
 152         /* Layout of TCS outputs / TES inputs:
 153          *   [0:12] = stride between output patches in DW, num_outputs * num_vertices * 4
 154          *            max = 32*32*4 + 32*4
 155          *   [13:18] = gl_PatchVerticesIn, max = 32
 156          *   [19:31] = high 13 bits of the 32-bit address of tessellation ring buffers
 157          */
 158         int param_tcs_out_lds_layout;
 159         int param_tcs_offchip_offset;
 160         int param_tcs_factor_offset;
 161
 162         /* API TES */
 163         int param_tes_offchip_addr;
 164         int param_tes_u;
 165         int param_tes_v;
 166         int param_tes_rel_patch_id;
 167         /* HW ES */
 168         int param_es2gs_offset;
 169         /* API GS */
 170         int param_gs2vs_offset;
 171         int param_gs_wave_id; /* GFX6 */
 172         LLVMValueRef gs_vtx_offset[6]; /* in dwords (GFX6) */
 173         int param_gs_vtx01_offset; /* in dwords (GFX9) */
 174         int param_gs_vtx23_offset; /* in dwords (GFX9) */
 175         int param_gs_vtx45_offset; /* in dwords (GFX9) */
 176         /* CS */
 177         int param_block_size;
 178
 179         struct si_compiler *compiler;
 180
 181         /* Preloaded descriptors. */
 182         LLVMValueRef esgs_ring;
 183         LLVMValueRef gsvs_ring[4];
 184         LLVMValueRef tess_offchip_ring;
 185
 186         LLVMValueRef invoc0_tess_factors[6]; /* outer[4], inner[2] */
 187         LLVMValueRef gs_next_vertex[4];
 188         LLVMValueRef postponed_kill;
 189         LLVMValueRef return_value;
 190
 191         LLVMTypeRef voidt;
 192         LLVMTypeRef i1;
 193         LLVMTypeRef i8;
 194         LLVMTypeRef i32;
 195         LLVMTypeRef i64;
 196         LLVMTypeRef i128;
 197         LLVMTypeRef f32;
 198         LLVMTypeRef v2i32;
 199         LLVMTypeRef v4i32;
 200         LLVMTypeRef v4f32;
 201         LLVMTypeRef v8i32;
 202
 203         LLVMValueRef i32_0;
 204         LLVMValueRef i32_1;
 205 };
 206
 207 static inline struct si_shader_context *
 208 si_shader_context(struct lp_build_tgsi_context *bld_base)
 209 {
 210         return (struct si_shader_context*)bld_base;
 211 }
 212
 213 static inline struct si_shader_context *
 214 si_shader_context_from_abi(struct ac_shader_abi *abi)
 215 {
 216         struct si_shader_context *ctx = NULL;
 217         return container_of(abi, ctx, abi);
 218 }
 219
 220 unsigned si_llvm_compile(LLVMModuleRef M, struct ac_shader_binary *binary,
 221                          struct si_compiler *compiler,
 222                          struct pipe_debug_callback *debug);
 223
 224 LLVMTypeRef tgsi2llvmtype(struct lp_build_tgsi_context *bld_base,
 225                           enum tgsi_opcode_type type);
 226
 227 LLVMValueRef bitcast(struct lp_build_tgsi_context *bld_base,
 228                      enum tgsi_opcode_type type, LLVMValueRef value);
 229
 230 LLVMValueRef si_llvm_bound_index(struct si_shader_context *ctx,
 231                                  LLVMValueRef index,
 232                                  unsigned num);
 233
 234 void si_llvm_context_init(struct si_shader_context *ctx,
 235                           struct si_screen *sscreen,
 236                           struct si_compiler *compiler);
 237 void si_llvm_context_set_tgsi(struct si_shader_context *ctx,
 238                               struct si_shader *shader);
 239
 240 void si_llvm_create_func(struct si_shader_context *ctx,
 241                          const char *name,
 242                          LLVMTypeRef *return_types, unsigned num_return_elems,
 243                          LLVMTypeRef *ParamTypes, unsigned ParamCount);
 244
 245 void si_llvm_dispose(struct si_shader_context *ctx);
 246
 247 void si_llvm_optimize_module(struct si_shader_context *ctx);
 248
 249 LLVMValueRef si_llvm_emit_fetch_64bit(struct lp_build_tgsi_context *bld_base,
 250                                       LLVMTypeRef type,
 251                                       LLVMValueRef ptr,
 252                                       LLVMValueRef ptr2);
 253
 254 LLVMValueRef si_llvm_emit_fetch(struct lp_build_tgsi_context *bld_base,
 255                                 const struct tgsi_full_src_register *reg,
 256                                 enum tgsi_opcode_type type,
 257                                 unsigned swizzle);
 258
 259 void si_llvm_emit_kill(struct ac_shader_abi *abi, LLVMValueRef visible);
 260
 261 LLVMValueRef si_nir_load_input_tes(struct ac_shader_abi *abi,
 262                                    LLVMTypeRef type,
 263                                    LLVMValueRef vertex_index,
 264                                    LLVMValueRef param_index,
 265                                    unsigned const_index,
 266                                    unsigned location,
 267                                    unsigned driver_location,
 268                                    unsigned component,
 269                                    unsigned num_components,
 270                                    bool is_patch,
 271                                    bool is_compact,
 272                                    bool load_input);
 273
 274 LLVMValueRef si_llvm_load_input_gs(struct ac_shader_abi *abi,
 275                                    unsigned input_index,
 276                                    unsigned vtx_offset_param,
 277                                    LLVMTypeRef type,
 278                                    unsigned swizzle);
 279
 280 LLVMValueRef si_nir_lookup_interp_param(struct ac_shader_abi *abi,
 281                                         enum glsl_interp_mode interp,
 282                                         unsigned location);
 283
 284 void si_llvm_emit_store(struct lp_build_tgsi_context *bld_base,
 285                         const struct tgsi_full_instruction *inst,
 286                         const struct tgsi_opcode_info *info,
 287                         unsigned index,
 288                         LLVMValueRef dst[4]);
 289
 290 /* Combine these with & instead of |. */
 291 #define NOOP_WAITCNT 0xf7f
 292 #define LGKM_CNT 0x07f
 293 #define VM_CNT 0xf70
 294
 295 LLVMValueRef si_get_indirect_index(struct si_shader_context *ctx,
 296                                    const struct tgsi_ind_register *ind,
 297                                    unsigned addr_mul, int rel_index);
 298 LLVMValueRef si_get_bounded_indirect_index(struct si_shader_context *ctx,
 299                                            const struct tgsi_ind_register *ind,
 300                                            int rel_index, unsigned num);
 301 LLVMValueRef si_get_sample_id(struct si_shader_context *ctx);
 302
 303 void si_shader_context_init_alu(struct lp_build_tgsi_context *bld_base);
 304 void si_shader_context_init_mem(struct si_shader_context *ctx);
 305
 306 LLVMValueRef si_load_sampler_desc(struct si_shader_context *ctx,
 307                                   LLVMValueRef list, LLVMValueRef index,
 308                                   enum ac_descriptor_type type);
 309 LLVMValueRef si_load_image_desc(struct si_shader_context *ctx,
 310                                 LLVMValueRef list, LLVMValueRef index,
 311                                 enum ac_descriptor_type desc_type, bool dcc_off);
 312
 313 void si_load_system_value(struct si_shader_context *ctx,
 314                           unsigned index,
 315                           const struct tgsi_full_declaration *decl);
 316 void si_declare_compute_memory(struct si_shader_context *ctx);
 317 void si_tgsi_declare_compute_memory(struct si_shader_context *ctx,
 318                                     const struct tgsi_full_declaration *decl);
 319
 320 void si_llvm_load_input_vs(
 321         struct si_shader_context *ctx,
 322         unsigned input_index,
 323         LLVMValueRef out[4]);
 324 void si_llvm_load_input_fs(
 325         struct si_shader_context *ctx,
 326         unsigned input_index,
 327         LLVMValueRef out[4]);
 328
 329 bool si_nir_build_llvm(struct si_shader_context *ctx, struct nir_shader *nir);
 330
 331 LLVMValueRef si_unpack_param(struct si_shader_context *ctx,
 332                              unsigned param, unsigned rshift,
 333                              unsigned bitwidth);
 334
 335 #endif