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
  35 #include <llvm-c/Core.h>
  36 #include <llvm-c/TargetMachine.h>
  37
  38 struct pipe_debug_callback;
  39 struct ac_shader_binary;
  40
  41 #define RADEON_LLVM_MAX_INPUT_SLOTS 32
  42 #define RADEON_LLVM_MAX_INPUTS 32 * 4
  43 #define RADEON_LLVM_MAX_OUTPUTS 32 * 4
  44
  45 #define RADEON_LLVM_MAX_SYSTEM_VALUES 11
  46 #define RADEON_LLVM_MAX_ADDRS 16
  47
  48 struct si_shader_context {
  49         struct lp_build_tgsi_context bld_base;
  50         struct gallivm_state gallivm;
  51         struct ac_llvm_context ac;
  52         struct si_shader *shader;
  53         struct si_screen *screen;
  54
  55         unsigned type; /* PIPE_SHADER_* specifies the type of shader. */
  56
  57         /* For clamping the non-constant index in resource indexing: */
  58         unsigned num_const_buffers;
  59         unsigned num_shader_buffers;
  60         unsigned num_images;
  61         unsigned num_samplers;
  62
  63         struct ac_shader_abi abi;
  64
  65         /** This function is responsible for initilizing the inputs array and will be
  66           * called once for each input declared in the TGSI shader.
  67           */
  68         void (*load_input)(struct si_shader_context *,
  69                            unsigned input_index,
  70                            const struct tgsi_full_declaration *decl,
  71                            LLVMValueRef out[4]);
  72
  73         /** This array contains the input values for the shader.  Typically these
  74           * values will be in the form of a target intrinsic that will inform the
  75           * backend how to load the actual inputs to the shader.
  76           */
  77         struct tgsi_full_declaration input_decls[RADEON_LLVM_MAX_INPUT_SLOTS];
  78         LLVMValueRef inputs[RADEON_LLVM_MAX_INPUTS];
  79         LLVMValueRef outputs[RADEON_LLVM_MAX_OUTPUTS][TGSI_NUM_CHANNELS];
  80         LLVMValueRef addrs[RADEON_LLVM_MAX_ADDRS][TGSI_NUM_CHANNELS];
  81
  82         /** This pointer is used to contain the temporary values.
  83           * The amount of temporary used in tgsi can't be bound to a max value and
  84           * thus we must allocate this array at runtime.
  85           */
  86         LLVMValueRef *temps;
  87         unsigned temps_count;
  88         LLVMValueRef system_values[RADEON_LLVM_MAX_SYSTEM_VALUES];
  89
  90         LLVMValueRef *imms;
  91         unsigned imms_num;
  92
  93         struct lp_build_if_state merged_wrap_if_state;
  94
  95         struct tgsi_array_info *temp_arrays;
  96         LLVMValueRef *temp_array_allocas;
  97
  98         LLVMValueRef undef_alloca;
  99
 100         LLVMValueRef main_fn;
 101         LLVMTypeRef return_type;
 102
 103         /* Parameter indices for LLVMGetParam. */
 104         int param_rw_buffers;
 105         int param_const_and_shader_buffers;
 106         int param_samplers_and_images;
 107         int param_bindless_samplers_and_images;
 108         /* Common inputs for merged shaders. */
 109         int param_merged_wave_info;
 110         int param_merged_scratch_offset;
 111         /* API VS */
 112         int param_vertex_buffers;
 113         int param_rel_auto_id;
 114         int param_vs_prim_id;
 115         int param_vertex_index0;
 116         /* VS states and layout of LS outputs / TCS inputs at the end
 117          *   [0] = clamp vertex color
 118          *   [1] = indexed
 119          *   [8:20] = stride between patches in DW = num_inputs * num_vertices * 4
 120          *            max = 32*32*4 + 32*4
 121          *   [24:31] = stride between vertices in DW = num_inputs * 4
 122          *             max = 32*4
 123          */
 124         int param_vs_state_bits;
 125         int param_vs_blit_inputs;
 126         /* HW VS */
 127         int param_streamout_config;
 128         int param_streamout_write_index;
 129         int param_streamout_offset[4];
 130
 131         /* API TCS & TES */
 132         /* Layout of TCS outputs in the offchip buffer
 133          * # 6 bits
 134          *   [0:5] = the number of patches per threadgroup, max = NUM_PATCHES (40)
 135          * # 6 bits
 136          *   [6:11] = the number of output vertices per patch, max = 32
 137          * # 20 bits
 138          *   [12:31] = the offset of per patch attributes in the buffer in bytes.
 139          *             max = NUM_PATCHES*32*32*16
 140          */
 141         int param_tcs_offchip_layout;
 142
 143         /* API TCS */
 144         /* Offsets where TCS outputs and TCS patch outputs live in LDS:
 145          *   [0:15] = TCS output patch0 offset / 16, max = NUM_PATCHES * 32 * 32
 146          *   [16:31] = TCS output patch0 offset for per-patch / 16
 147          *             max = (NUM_PATCHES + 1) * 32*32
 148          */
 149         int param_tcs_out_lds_offsets;
 150         /* Layout of TCS outputs / TES inputs:
 151          *   [0:12] = stride between output patches in DW, num_outputs * num_vertices * 4
 152          *            max = 32*32*4 + 32*4
 153          *   [13:18] = gl_PatchVerticesIn, max = 32
 154          *   [19:31] = high 13 bits of the 32-bit address of tessellation ring buffers
 155          */
 156         int param_tcs_out_lds_layout;
 157         int param_tcs_offchip_offset;
 158         int param_tcs_factor_offset;
 159
 160         /* API TES */
 161         int param_tes_offchip_addr;
 162         int param_tes_u;
 163         int param_tes_v;
 164         int param_tes_rel_patch_id;
 165         /* HW ES */
 166         int param_es2gs_offset;
 167         /* API GS */
 168         int param_gs2vs_offset;
 169         int param_gs_wave_id; /* GFX6 */
 170         LLVMValueRef gs_vtx_offset[6]; /* in dwords (GFX6) */
 171         int param_gs_vtx01_offset; /* in dwords (GFX9) */
 172         int param_gs_vtx23_offset; /* in dwords (GFX9) */
 173         int param_gs_vtx45_offset; /* in dwords (GFX9) */
 174         /* CS */
 175         int param_block_size;
 176
 177         struct ac_llvm_compiler *compiler;
 178
 179         /* Preloaded descriptors. */
 180         LLVMValueRef esgs_ring;
 181         LLVMValueRef gsvs_ring[4];
 182         LLVMValueRef tess_offchip_ring;
 183
 184         LLVMValueRef invoc0_tess_factors[6]; /* outer[4], inner[2] */
 185         LLVMValueRef gs_next_vertex[4];
 186         LLVMValueRef postponed_kill;
 187         LLVMValueRef return_value;
 188
 189         LLVMTypeRef voidt;
 190         LLVMTypeRef i1;
 191         LLVMTypeRef i8;
 192         LLVMTypeRef i32;
 193         LLVMTypeRef i64;
 194         LLVMTypeRef i128;
 195         LLVMTypeRef f32;
 196         LLVMTypeRef v2i32;
 197         LLVMTypeRef v4i32;
 198         LLVMTypeRef v4f32;
 199         LLVMTypeRef v8i32;
 200
 201         LLVMValueRef i32_0;
 202         LLVMValueRef i32_1;
 203         LLVMValueRef i1false;
 204         LLVMValueRef i1true;
 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 ac_llvm_compiler *compiler,
 222                          struct pipe_debug_callback *debug,
 223                          bool less_optimized);
 224
 225 LLVMTypeRef tgsi2llvmtype(struct lp_build_tgsi_context *bld_base,
 226                           enum tgsi_opcode_type type);
 227
 228 LLVMValueRef bitcast(struct lp_build_tgsi_context *bld_base,
 229                      enum tgsi_opcode_type type, LLVMValueRef value);
 230
 231 LLVMValueRef si_llvm_bound_index(struct si_shader_context *ctx,
 232                                  LLVMValueRef index,
 233                                  unsigned num);
 234
 235 void si_llvm_context_init(struct si_shader_context *ctx,
 236                           struct si_screen *sscreen,
 237                           struct ac_llvm_compiler *compiler);
 238 void si_llvm_context_set_tgsi(struct si_shader_context *ctx,
 239                               struct si_shader *shader);
 240
 241 void si_llvm_create_func(struct si_shader_context *ctx,
 242                          const char *name,
 243                          LLVMTypeRef *return_types, unsigned num_return_elems,
 244                          LLVMTypeRef *ParamTypes, unsigned ParamCount);
 245
 246 void si_llvm_dispose(struct si_shader_context *ctx);
 247
 248 void si_llvm_optimize_module(struct si_shader_context *ctx);
 249
 250 LLVMValueRef si_llvm_emit_fetch_64bit(struct lp_build_tgsi_context *bld_base,
 251                                       LLVMTypeRef type,
 252                                       LLVMValueRef ptr,
 253                                       LLVMValueRef ptr2);
 254
 255 LLVMValueRef si_llvm_emit_fetch(struct lp_build_tgsi_context *bld_base,
 256                                 const struct tgsi_full_src_register *reg,
 257                                 enum tgsi_opcode_type type,
 258                                 unsigned swizzle);
 259
 260 void si_llvm_emit_kill(struct ac_shader_abi *abi, LLVMValueRef visible);
 261
 262 LLVMValueRef si_nir_load_input_tes(struct ac_shader_abi *abi,
 263                                    LLVMTypeRef type,
 264                                    LLVMValueRef vertex_index,
 265                                    LLVMValueRef param_index,
 266                                    unsigned const_index,
 267                                    unsigned location,
 268                                    unsigned driver_location,
 269                                    unsigned component,
 270                                    unsigned num_components,
 271                                    bool is_patch,
 272                                    bool is_compact,
 273                                    bool load_input);
 274
 275 LLVMValueRef si_llvm_load_input_gs(struct ac_shader_abi *abi,
 276                                    unsigned input_index,
 277                                    unsigned vtx_offset_param,
 278                                    LLVMTypeRef type,
 279                                    unsigned swizzle);
 280
 281 LLVMValueRef si_nir_lookup_interp_param(struct ac_shader_abi *abi,
 282                                         enum glsl_interp_mode interp,
 283                                         unsigned location);
 284
 285 void si_llvm_emit_store(struct lp_build_tgsi_context *bld_base,
 286                         const struct tgsi_full_instruction *inst,
 287                         const struct tgsi_opcode_info *info,
 288                         unsigned index,
 289                         LLVMValueRef dst[4]);
 290
 291 /* Combine these with & instead of |. */
 292 #define NOOP_WAITCNT 0xf7f
 293 #define LGKM_CNT 0x07f
 294 #define VM_CNT 0xf70
 295
 296 LLVMValueRef si_get_indirect_index(struct si_shader_context *ctx,
 297                                    const struct tgsi_ind_register *ind,
 298                                    unsigned addr_mul, int rel_index);
 299 LLVMValueRef si_get_bounded_indirect_index(struct si_shader_context *ctx,
 300                                            const struct tgsi_ind_register *ind,
 301                                            int rel_index, unsigned num);
 302 LLVMValueRef si_get_sample_id(struct si_shader_context *ctx);
 303
 304 void si_shader_context_init_alu(struct lp_build_tgsi_context *bld_base);
 305 void si_shader_context_init_mem(struct si_shader_context *ctx);
 306
 307 LLVMValueRef si_load_sampler_desc(struct si_shader_context *ctx,
 308                                   LLVMValueRef list, LLVMValueRef index,
 309                                   enum ac_descriptor_type type);
 310 LLVMValueRef si_load_image_desc(struct si_shader_context *ctx,
 311                                 LLVMValueRef list, LLVMValueRef index,
 312                                 enum ac_descriptor_type desc_type, bool dcc_off);
 313
 314 void si_load_system_value(struct si_shader_context *ctx,
 315                           unsigned index,
 316                           const struct tgsi_full_declaration *decl);
 317 void si_declare_compute_memory(struct si_shader_context *ctx);
 318 void si_tgsi_declare_compute_memory(struct si_shader_context *ctx,
 319                                     const struct tgsi_full_declaration *decl);
 320
 321 void si_llvm_load_input_vs(
 322         struct si_shader_context *ctx,
 323         unsigned input_index,
 324         LLVMValueRef out[4]);
 325 void si_llvm_load_input_fs(
 326         struct si_shader_context *ctx,
 327         unsigned input_index,
 328         LLVMValueRef out[4]);
 329
 330 bool si_nir_build_llvm(struct si_shader_context *ctx, struct nir_shader *nir);
 331
 332 LLVMValueRef si_unpack_param(struct si_shader_context *ctx,
 333                              unsigned param, unsigned rshift,
 334                              unsigned bitwidth);
 335
 336 #endif