src/mesa/drivers/dri/i965/brw_eu.h

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
   4  develop this 3D driver.
   5
   6  Permission is hereby granted, free of charge, to any person obtaining
   7  a copy of this software and associated documentation files (the
   8  "Software"), to deal in the Software without restriction, including
   9  without limitation the rights to use, copy, modify, merge, publish,
  10  distribute, sublicense, and/or sell copies of the Software, and to
  11  permit persons to whom the Software is furnished to do so, subject to
  12  the following conditions:
  13
  14  The above copyright notice and this permission notice (including the
  15  next paragraph) shall be included in all copies or substantial
  16  portions of the Software.
  17
  18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26  **********************************************************************/
  27  /*
  28   * Authors:
  29   *   Keith Whitwell <keith@tungstengraphics.com>
  30   */
  31
  32
  33 #ifndef BRW_EU_H
  34 #define BRW_EU_H
  35
  36 #include <stdbool.h>
  37 #include "brw_structs.h"
  38 #include "brw_defines.h"
  39 #include "brw_reg.h"
  40 #include "program/prog_instruction.h"
  41
  42 #ifdef __cplusplus
  43 extern "C" {
  44 #endif
  45
  46 #define BRW_EU_MAX_INSN_STACK 5
  47
  48 struct brw_compile {
  49    struct brw_instruction *store;
  50    int store_size;
  51    GLuint nr_insn;
  52    unsigned int next_insn_offset;
  53
  54    void *mem_ctx;
  55
  56    /* Allow clients to push/pop instruction state:
  57     */
  58    struct brw_instruction stack[BRW_EU_MAX_INSN_STACK];
  59    bool compressed_stack[BRW_EU_MAX_INSN_STACK];
  60    struct brw_instruction *current;
  61
  62    GLuint flag_value;
  63    bool single_program_flow;
  64    bool compressed;
  65    struct brw_context *brw;
  66
  67    /* Control flow stacks:
  68     * - if_stack contains IF and ELSE instructions which must be patched
  69     *   (and popped) once the matching ENDIF instruction is encountered.
  70     *
  71     *   Just store the instruction pointer(an index).
  72     */
  73    int *if_stack;
  74    int if_stack_depth;
  75    int if_stack_array_size;
  76
  77    /**
  78     * loop_stack contains the instruction pointers of the starts of loops which
  79     * must be patched (and popped) once the matching WHILE instruction is
  80     * encountered.
  81     */
  82    int *loop_stack;
  83    /**
  84     * pre-gen6, the BREAK and CONT instructions had to tell how many IF/ENDIF
  85     * blocks they were popping out of, to fix up the mask stack.  This tracks
  86     * the IF/ENDIF nesting in each current nested loop level.
  87     */
  88    int *if_depth_in_loop;
  89    int loop_stack_depth;
  90    int loop_stack_array_size;
  91 };
  92
  93 static INLINE struct brw_instruction *current_insn( struct brw_compile *p)
  94 {
  95    return &p->store[p->nr_insn];
  96 }
  97
  98 void brw_pop_insn_state( struct brw_compile *p );
  99 void brw_push_insn_state( struct brw_compile *p );
 100 void brw_set_mask_control( struct brw_compile *p, GLuint value );
 101 void brw_set_saturate( struct brw_compile *p, bool enable );
 102 void brw_set_access_mode( struct brw_compile *p, GLuint access_mode );
 103 void brw_set_compression_control(struct brw_compile *p, enum brw_compression c);
 104 void brw_set_predicate_control_flag_value( struct brw_compile *p, GLuint value );
 105 void brw_set_predicate_control( struct brw_compile *p, GLuint pc );
 106 void brw_set_predicate_inverse(struct brw_compile *p, bool predicate_inverse);
 107 void brw_set_conditionalmod( struct brw_compile *p, GLuint conditional );
 108 void brw_set_flag_reg(struct brw_compile *p, int reg, int subreg);
 109 void brw_set_acc_write_control(struct brw_compile *p, GLuint value);
 110
 111 void brw_init_compile(struct brw_context *, struct brw_compile *p,
 112                       void *mem_ctx);
 113 void brw_dump_compile(struct brw_compile *p, FILE *out, int start, int end);
 114 const GLuint *brw_get_program( struct brw_compile *p, GLuint *sz );
 115
 116 struct brw_instruction *brw_next_insn(struct brw_compile *p, GLuint opcode);
 117 void brw_set_dest(struct brw_compile *p, struct brw_instruction *insn,
 118                   struct brw_reg dest);
 119 void brw_set_src0(struct brw_compile *p, struct brw_instruction *insn,
 120                   struct brw_reg reg);
 121
 122 void gen6_resolve_implied_move(struct brw_compile *p,
 123                                struct brw_reg *src,
 124                                GLuint msg_reg_nr);
 125
 126 /* Helpers for regular instructions:
 127  */
 128 #define ALU1(OP)                                        \
 129 struct brw_instruction *brw_##OP(struct brw_compile *p, \
 130               struct brw_reg dest,                      \
 131               struct brw_reg src0);
 132
 133 #define ALU2(OP)                                        \
 134 struct brw_instruction *brw_##OP(struct brw_compile *p, \
 135               struct brw_reg dest,                      \
 136               struct brw_reg src0,                      \
 137               struct brw_reg src1);
 138
 139 #define ALU3(OP)                                        \
 140 struct brw_instruction *brw_##OP(struct brw_compile *p, \
 141               struct brw_reg dest,                      \
 142               struct brw_reg src0,                      \
 143               struct brw_reg src1,                      \
 144               struct brw_reg src2);
 145
 146 #define ROUND(OP) \
 147 void brw_##OP(struct brw_compile *p, struct brw_reg dest, struct brw_reg src0);
 148
 149 ALU1(MOV)
 150 ALU2(SEL)
 151 ALU1(NOT)
 152 ALU2(AND)
 153 ALU2(OR)
 154 ALU2(XOR)
 155 ALU2(SHR)
 156 ALU2(SHL)
 157 ALU2(RSR)
 158 ALU2(RSL)
 159 ALU2(ASR)
 160 ALU1(F32TO16)
 161 ALU1(F16TO32)
 162 ALU2(JMPI)
 163 ALU2(ADD)
 164 ALU2(AVG)
 165 ALU2(MUL)
 166 ALU1(FRC)
 167 ALU1(RNDD)
 168 ALU2(MAC)
 169 ALU2(MACH)
 170 ALU1(LZD)
 171 ALU2(DP4)
 172 ALU2(DPH)
 173 ALU2(DP3)
 174 ALU2(DP2)
 175 ALU2(LINE)
 176 ALU2(PLN)
 177 ALU3(MAD)
 178 ALU3(LRP)
 179 ALU1(BFREV)
 180 ALU3(BFE)
 181 ALU2(BFI1)
 182 ALU3(BFI2)
 183 ALU1(FBH)
 184 ALU1(FBL)
 185 ALU1(CBIT)
 186
 187 ROUND(RNDZ)
 188 ROUND(RNDE)
 189
 190 #undef ALU1
 191 #undef ALU2
 192 #undef ALU3
 193 #undef ROUND
 194
 195
 196 /* Helpers for SEND instruction:
 197  */
 198 void brw_set_sampler_message(struct brw_compile *p,
 199                              struct brw_instruction *insn,
 200                              GLuint binding_table_index,
 201                              GLuint sampler,
 202                              GLuint msg_type,
 203                              GLuint response_length,
 204                              GLuint msg_length,
 205                              GLuint header_present,
 206                              GLuint simd_mode,
 207                              GLuint return_format);
 208
 209 void brw_set_dp_read_message(struct brw_compile *p,
 210                              struct brw_instruction *insn,
 211                              GLuint binding_table_index,
 212                              GLuint msg_control,
 213                              GLuint msg_type,
 214                              GLuint target_cache,
 215                              GLuint msg_length,
 216                              bool header_present,
 217                              GLuint response_length);
 218
 219 void brw_set_dp_write_message(struct brw_compile *p,
 220                               struct brw_instruction *insn,
 221                               GLuint binding_table_index,
 222                               GLuint msg_control,
 223                               GLuint msg_type,
 224                               GLuint msg_length,
 225                               bool header_present,
 226                               GLuint last_render_target,
 227                               GLuint response_length,
 228                               GLuint end_of_thread,
 229                               GLuint send_commit_msg);
 230
 231 void brw_urb_WRITE(struct brw_compile *p,
 232                    struct brw_reg dest,
 233                    GLuint msg_reg_nr,
 234                    struct brw_reg src0,
 235                    bool allocate,
 236                    bool used,
 237                    GLuint msg_length,
 238                    GLuint response_length,
 239                    bool eot,
 240                    bool writes_complete,
 241                    GLuint offset,
 242                    GLuint swizzle);
 243
 244 void brw_ff_sync(struct brw_compile *p,
 245                    struct brw_reg dest,
 246                    GLuint msg_reg_nr,
 247                    struct brw_reg src0,
 248                    bool allocate,
 249                    GLuint response_length,
 250                    bool eot);
 251
 252 void brw_svb_write(struct brw_compile *p,
 253                    struct brw_reg dest,
 254                    GLuint msg_reg_nr,
 255                    struct brw_reg src0,
 256                    GLuint binding_table_index,
 257                    bool   send_commit_msg);
 258
 259 void brw_fb_WRITE(struct brw_compile *p,
 260                   int dispatch_width,
 261                    GLuint msg_reg_nr,
 262                    struct brw_reg src0,
 263                    GLuint msg_control,
 264                    GLuint binding_table_index,
 265                    GLuint msg_length,
 266                    GLuint response_length,
 267                    bool eot,
 268                    bool header_present);
 269
 270 void brw_SAMPLE(struct brw_compile *p,
 271                 struct brw_reg dest,
 272                 GLuint msg_reg_nr,
 273                 struct brw_reg src0,
 274                 GLuint binding_table_index,
 275                 GLuint sampler,
 276                 GLuint msg_type,
 277                 GLuint response_length,
 278                 GLuint msg_length,
 279                 GLuint header_present,
 280                 GLuint simd_mode,
 281                 GLuint return_format);
 282
 283 void brw_math( struct brw_compile *p,
 284                struct brw_reg dest,
 285                GLuint function,
 286                GLuint msg_reg_nr,
 287                struct brw_reg src,
 288                GLuint data_type,
 289                GLuint precision );
 290
 291 void brw_math2(struct brw_compile *p,
 292                struct brw_reg dest,
 293                GLuint function,
 294                struct brw_reg src0,
 295                struct brw_reg src1);
 296
 297 void brw_oword_block_read(struct brw_compile *p,
 298                           struct brw_reg dest,
 299                           struct brw_reg mrf,
 300                           uint32_t offset,
 301                           uint32_t bind_table_index);
 302
 303 void brw_oword_block_read_scratch(struct brw_compile *p,
 304                                   struct brw_reg dest,
 305                                   struct brw_reg mrf,
 306                                   int num_regs,
 307                                   GLuint offset);
 308
 309 void brw_oword_block_write_scratch(struct brw_compile *p,
 310                                    struct brw_reg mrf,
 311                                    int num_regs,
 312                                    GLuint offset);
 313
 314 void brw_shader_time_add(struct brw_compile *p,
 315                          struct brw_reg payload,
 316                          uint32_t surf_index);
 317
 318 /* If/else/endif.  Works by manipulating the execution flags on each
 319  * channel.
 320  */
 321 struct brw_instruction *brw_IF(struct brw_compile *p,
 322                                GLuint execute_size);
 323 struct brw_instruction *gen6_IF(struct brw_compile *p, uint32_t conditional,
 324                                 struct brw_reg src0, struct brw_reg src1);
 325
 326 void brw_ELSE(struct brw_compile *p);
 327 void brw_ENDIF(struct brw_compile *p);
 328
 329 /* DO/WHILE loops:
 330  */
 331 struct brw_instruction *brw_DO(struct brw_compile *p,
 332                                GLuint execute_size);
 333
 334 struct brw_instruction *brw_WHILE(struct brw_compile *p);
 335
 336 struct brw_instruction *brw_BREAK(struct brw_compile *p);
 337 struct brw_instruction *brw_CONT(struct brw_compile *p);
 338 struct brw_instruction *gen6_CONT(struct brw_compile *p);
 339 struct brw_instruction *gen6_HALT(struct brw_compile *p);
 340 /* Forward jumps:
 341  */
 342 void brw_land_fwd_jump(struct brw_compile *p, int jmp_insn_idx);
 343
 344
 345
 346 void brw_NOP(struct brw_compile *p);
 347
 348 void brw_WAIT(struct brw_compile *p);
 349
 350 /* Special case: there is never a destination, execution size will be
 351  * taken from src0:
 352  */
 353 void brw_CMP(struct brw_compile *p,
 354              struct brw_reg dest,
 355              GLuint conditional,
 356              struct brw_reg src0,
 357              struct brw_reg src1);
 358
 359 /***********************************************************************
 360  * brw_eu_util.c:
 361  */
 362
 363 void brw_copy_indirect_to_indirect(struct brw_compile *p,
 364                                    struct brw_indirect dst_ptr,
 365                                    struct brw_indirect src_ptr,
 366                                    GLuint count);
 367
 368 void brw_copy_from_indirect(struct brw_compile *p,
 369                             struct brw_reg dst,
 370                             struct brw_indirect ptr,
 371                             GLuint count);
 372
 373 void brw_copy4(struct brw_compile *p,
 374                struct brw_reg dst,
 375                struct brw_reg src,
 376                GLuint count);
 377
 378 void brw_copy8(struct brw_compile *p,
 379                struct brw_reg dst,
 380                struct brw_reg src,
 381                GLuint count);
 382
 383 void brw_math_invert( struct brw_compile *p,
 384                       struct brw_reg dst,
 385                       struct brw_reg src);
 386
 387 void brw_set_src1(struct brw_compile *p,
 388                   struct brw_instruction *insn,
 389                   struct brw_reg reg);
 390
 391 void brw_set_uip_jip(struct brw_compile *p);
 392
 393 uint32_t brw_swap_cmod(uint32_t cmod);
 394
 395 /* brw_eu_compact.c */
 396 void brw_init_compaction_tables(struct intel_context *intel);
 397 void brw_compact_instructions(struct brw_compile *p);
 398 void brw_uncompact_instruction(struct intel_context *intel,
 399                                struct brw_instruction *dst,
 400                                struct brw_compact_instruction *src);
 401 bool brw_try_compact_instruction(struct brw_compile *p,
 402                                  struct brw_compact_instruction *dst,
 403                                  struct brw_instruction *src);
 404
 405 void brw_debug_compact_uncompact(struct intel_context *intel,
 406                                  struct brw_instruction *orig,
 407                                  struct brw_instruction *uncompacted);
 408
 409 #ifdef __cplusplus
 410 }
 411 #endif
 412
 413 #endif