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 enum brw_urb_write_flags {
 232    BRW_URB_WRITE_NO_FLAGS = 0,
 233
 234    /**
 235     * Causes a new URB entry to be allocated, and its address stored in the
 236     * destination register (gen < 7).
 237     */
 238    BRW_URB_WRITE_ALLOCATE = 0x1,
 239
 240    /**
 241     * Causes the current URB entry to be deallocated (gen < 7).
 242     */
 243    BRW_URB_WRITE_UNUSED = 0x2,
 244
 245    /**
 246     * Causes the thread to terminate.
 247     */
 248    BRW_URB_WRITE_EOT = 0x4,
 249
 250    /**
 251     * Indicates that the given URB entry is complete, and may be sent further
 252     * down the 3D pipeline (gen < 7).
 253     */
 254    BRW_URB_WRITE_COMPLETE = 0x8,
 255
 256    /**
 257     * Indicates that an additional offset (which may be different for the two
 258     * vec4 slots) is stored in the message header (gen == 7).
 259     */
 260    BRW_URB_WRITE_PER_SLOT_OFFSET = 0x10,
 261
 262    /**
 263     * Convenient combination of flags: end the thread while simultaneously
 264     * marking the given URB entry as complete.
 265     */
 266    BRW_URB_WRITE_EOT_COMPLETE = BRW_URB_WRITE_EOT | BRW_URB_WRITE_COMPLETE,
 267
 268    /**
 269     * Convenient combination of flags: mark the given URB entry as complete
 270     * and simultaneously allocate a new one.
 271     */
 272    BRW_URB_WRITE_ALLOCATE_COMPLETE =
 273       BRW_URB_WRITE_ALLOCATE | BRW_URB_WRITE_COMPLETE,
 274 };
 275
 276 #ifdef __cplusplus
 277 /**
 278  * Allow brw_urb_write_flags enums to be ORed together.
 279  */
 280 inline brw_urb_write_flags
 281 operator|(brw_urb_write_flags x, brw_urb_write_flags y)
 282 {
 283    return static_cast<brw_urb_write_flags>(static_cast<int>(x) |
 284                                            static_cast<int>(y));
 285 }
 286 #endif
 287
 288 void brw_urb_WRITE(struct brw_compile *p,
 289                    struct brw_reg dest,
 290                    GLuint msg_reg_nr,
 291                    struct brw_reg src0,
 292                    enum brw_urb_write_flags flags,
 293                    GLuint msg_length,
 294                    GLuint response_length,
 295                    GLuint offset,
 296                    GLuint swizzle);
 297
 298 void brw_ff_sync(struct brw_compile *p,
 299                    struct brw_reg dest,
 300                    GLuint msg_reg_nr,
 301                    struct brw_reg src0,
 302                    bool allocate,
 303                    GLuint response_length,
 304                    bool eot);
 305
 306 void brw_svb_write(struct brw_compile *p,
 307                    struct brw_reg dest,
 308                    GLuint msg_reg_nr,
 309                    struct brw_reg src0,
 310                    GLuint binding_table_index,
 311                    bool   send_commit_msg);
 312
 313 void brw_fb_WRITE(struct brw_compile *p,
 314                   int dispatch_width,
 315                    GLuint msg_reg_nr,
 316                    struct brw_reg src0,
 317                    GLuint msg_control,
 318                    GLuint binding_table_index,
 319                    GLuint msg_length,
 320                    GLuint response_length,
 321                    bool eot,
 322                    bool header_present);
 323
 324 void brw_SAMPLE(struct brw_compile *p,
 325                 struct brw_reg dest,
 326                 GLuint msg_reg_nr,
 327                 struct brw_reg src0,
 328                 GLuint binding_table_index,
 329                 GLuint sampler,
 330                 GLuint msg_type,
 331                 GLuint response_length,
 332                 GLuint msg_length,
 333                 GLuint header_present,
 334                 GLuint simd_mode,
 335                 GLuint return_format);
 336
 337 void brw_math( struct brw_compile *p,
 338                struct brw_reg dest,
 339                GLuint function,
 340                GLuint msg_reg_nr,
 341                struct brw_reg src,
 342                GLuint data_type,
 343                GLuint precision );
 344
 345 void brw_math2(struct brw_compile *p,
 346                struct brw_reg dest,
 347                GLuint function,
 348                struct brw_reg src0,
 349                struct brw_reg src1);
 350
 351 void brw_oword_block_read(struct brw_compile *p,
 352                           struct brw_reg dest,
 353                           struct brw_reg mrf,
 354                           uint32_t offset,
 355                           uint32_t bind_table_index);
 356
 357 void brw_oword_block_read_scratch(struct brw_compile *p,
 358                                   struct brw_reg dest,
 359                                   struct brw_reg mrf,
 360                                   int num_regs,
 361                                   GLuint offset);
 362
 363 void brw_oword_block_write_scratch(struct brw_compile *p,
 364                                    struct brw_reg mrf,
 365                                    int num_regs,
 366                                    GLuint offset);
 367
 368 void brw_shader_time_add(struct brw_compile *p,
 369                          struct brw_reg payload,
 370                          uint32_t surf_index);
 371
 372 /* If/else/endif.  Works by manipulating the execution flags on each
 373  * channel.
 374  */
 375 struct brw_instruction *brw_IF(struct brw_compile *p,
 376                                GLuint execute_size);
 377 struct brw_instruction *gen6_IF(struct brw_compile *p, uint32_t conditional,
 378                                 struct brw_reg src0, struct brw_reg src1);
 379
 380 void brw_ELSE(struct brw_compile *p);
 381 void brw_ENDIF(struct brw_compile *p);
 382
 383 /* DO/WHILE loops:
 384  */
 385 struct brw_instruction *brw_DO(struct brw_compile *p,
 386                                GLuint execute_size);
 387
 388 struct brw_instruction *brw_WHILE(struct brw_compile *p);
 389
 390 struct brw_instruction *brw_BREAK(struct brw_compile *p);
 391 struct brw_instruction *brw_CONT(struct brw_compile *p);
 392 struct brw_instruction *gen6_CONT(struct brw_compile *p);
 393 struct brw_instruction *gen6_HALT(struct brw_compile *p);
 394 /* Forward jumps:
 395  */
 396 void brw_land_fwd_jump(struct brw_compile *p, int jmp_insn_idx);
 397
 398
 399
 400 void brw_NOP(struct brw_compile *p);
 401
 402 void brw_WAIT(struct brw_compile *p);
 403
 404 /* Special case: there is never a destination, execution size will be
 405  * taken from src0:
 406  */
 407 void brw_CMP(struct brw_compile *p,
 408              struct brw_reg dest,
 409              GLuint conditional,
 410              struct brw_reg src0,
 411              struct brw_reg src1);
 412
 413 /***********************************************************************
 414  * brw_eu_util.c:
 415  */
 416
 417 void brw_copy_indirect_to_indirect(struct brw_compile *p,
 418                                    struct brw_indirect dst_ptr,
 419                                    struct brw_indirect src_ptr,
 420                                    GLuint count);
 421
 422 void brw_copy_from_indirect(struct brw_compile *p,
 423                             struct brw_reg dst,
 424                             struct brw_indirect ptr,
 425                             GLuint count);
 426
 427 void brw_copy4(struct brw_compile *p,
 428                struct brw_reg dst,
 429                struct brw_reg src,
 430                GLuint count);
 431
 432 void brw_copy8(struct brw_compile *p,
 433                struct brw_reg dst,
 434                struct brw_reg src,
 435                GLuint count);
 436
 437 void brw_math_invert( struct brw_compile *p,
 438                       struct brw_reg dst,
 439                       struct brw_reg src);
 440
 441 void brw_set_src1(struct brw_compile *p,
 442                   struct brw_instruction *insn,
 443                   struct brw_reg reg);
 444
 445 void brw_set_uip_jip(struct brw_compile *p);
 446
 447 uint32_t brw_swap_cmod(uint32_t cmod);
 448
 449 /* brw_eu_compact.c */
 450 void brw_init_compaction_tables(struct brw_context *brw);
 451 void brw_compact_instructions(struct brw_compile *p);
 452 void brw_uncompact_instruction(struct brw_context *brw,
 453                                struct brw_instruction *dst,
 454                                struct brw_compact_instruction *src);
 455 bool brw_try_compact_instruction(struct brw_compile *p,
 456                                  struct brw_compact_instruction *dst,
 457                                  struct brw_instruction *src);
 458
 459 void brw_debug_compact_uncompact(struct brw_context *brw,
 460                                  struct brw_instruction *orig,
 461                                  struct brw_instruction *uncompacted);
 462
 463 #ifdef __cplusplus
 464 }
 465 #endif
 466
 467 #endif