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

   1 /*
   2  Copyright (C) Intel Corp.  2006.  All Rights Reserved.
   3  Intel funded Tungsten Graphics 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 <keithw@vmware.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    unsigned 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    unsigned 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, unsigned value );
 101 void brw_set_saturate( struct brw_compile *p, bool enable );
 102 void brw_set_access_mode( struct brw_compile *p, unsigned 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, unsigned value );
 105 void brw_set_predicate_control( struct brw_compile *p, unsigned pc );
 106 void brw_set_predicate_inverse(struct brw_compile *p, bool predicate_inverse);
 107 void brw_set_conditionalmod( struct brw_compile *p, unsigned 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, unsigned 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 unsigned *brw_get_program( struct brw_compile *p, unsigned *sz );
 115
 116 struct brw_instruction *brw_next_insn(struct brw_compile *p, unsigned 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                                unsigned 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(ASR)
 158 ALU1(F32TO16)
 159 ALU1(F16TO32)
 160 ALU2(JMPI)
 161 ALU2(ADD)
 162 ALU2(AVG)
 163 ALU2(MUL)
 164 ALU1(FRC)
 165 ALU1(RNDD)
 166 ALU2(MAC)
 167 ALU2(MACH)
 168 ALU1(LZD)
 169 ALU2(DP4)
 170 ALU2(DPH)
 171 ALU2(DP3)
 172 ALU2(DP2)
 173 ALU2(LINE)
 174 ALU2(PLN)
 175 ALU3(MAD)
 176 ALU3(LRP)
 177 ALU1(BFREV)
 178 ALU3(BFE)
 179 ALU2(BFI1)
 180 ALU3(BFI2)
 181 ALU1(FBH)
 182 ALU1(FBL)
 183 ALU1(CBIT)
 184 ALU2(ADDC)
 185 ALU2(SUBB)
 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                              unsigned binding_table_index,
 201                              unsigned sampler,
 202                              unsigned msg_type,
 203                              unsigned response_length,
 204                              unsigned msg_length,
 205                              unsigned header_present,
 206                              unsigned simd_mode,
 207                              unsigned return_format);
 208
 209 void brw_set_dp_read_message(struct brw_compile *p,
 210                              struct brw_instruction *insn,
 211                              unsigned binding_table_index,
 212                              unsigned msg_control,
 213                              unsigned msg_type,
 214                              unsigned target_cache,
 215                              unsigned msg_length,
 216                              bool header_present,
 217                              unsigned response_length);
 218
 219 void brw_set_dp_write_message(struct brw_compile *p,
 220                               struct brw_instruction *insn,
 221                               unsigned binding_table_index,
 222                               unsigned msg_control,
 223                               unsigned msg_type,
 224                               unsigned msg_length,
 225                               bool header_present,
 226                               unsigned last_render_target,
 227                               unsigned response_length,
 228                               unsigned end_of_thread,
 229                               unsigned send_commit_msg);
 230
 231 void brw_urb_WRITE(struct brw_compile *p,
 232                    struct brw_reg dest,
 233                    unsigned msg_reg_nr,
 234                    struct brw_reg src0,
 235                    enum brw_urb_write_flags flags,
 236                    unsigned msg_length,
 237                    unsigned response_length,
 238                    unsigned offset,
 239                    unsigned swizzle);
 240
 241 void brw_ff_sync(struct brw_compile *p,
 242                    struct brw_reg dest,
 243                    unsigned msg_reg_nr,
 244                    struct brw_reg src0,
 245                    bool allocate,
 246                    unsigned response_length,
 247                    bool eot);
 248
 249 void brw_svb_write(struct brw_compile *p,
 250                    struct brw_reg dest,
 251                    unsigned msg_reg_nr,
 252                    struct brw_reg src0,
 253                    unsigned binding_table_index,
 254                    bool   send_commit_msg);
 255
 256 void brw_fb_WRITE(struct brw_compile *p,
 257                   int dispatch_width,
 258                    unsigned msg_reg_nr,
 259                    struct brw_reg src0,
 260                    unsigned msg_control,
 261                    unsigned binding_table_index,
 262                    unsigned msg_length,
 263                    unsigned response_length,
 264                    bool eot,
 265                    bool header_present);
 266
 267 void brw_SAMPLE(struct brw_compile *p,
 268                 struct brw_reg dest,
 269                 unsigned msg_reg_nr,
 270                 struct brw_reg src0,
 271                 unsigned binding_table_index,
 272                 unsigned sampler,
 273                 unsigned msg_type,
 274                 unsigned response_length,
 275                 unsigned msg_length,
 276                 unsigned header_present,
 277                 unsigned simd_mode,
 278                 unsigned return_format);
 279
 280 void brw_math( struct brw_compile *p,
 281                struct brw_reg dest,
 282                unsigned function,
 283                unsigned msg_reg_nr,
 284                struct brw_reg src,
 285                unsigned data_type,
 286                unsigned precision );
 287
 288 void brw_math2(struct brw_compile *p,
 289                struct brw_reg dest,
 290                unsigned function,
 291                struct brw_reg src0,
 292                struct brw_reg src1);
 293
 294 void brw_oword_block_read(struct brw_compile *p,
 295                           struct brw_reg dest,
 296                           struct brw_reg mrf,
 297                           uint32_t offset,
 298                           uint32_t bind_table_index);
 299
 300 void brw_oword_block_read_scratch(struct brw_compile *p,
 301                                   struct brw_reg dest,
 302                                   struct brw_reg mrf,
 303                                   int num_regs,
 304                                   unsigned offset);
 305
 306 void brw_oword_block_write_scratch(struct brw_compile *p,
 307                                    struct brw_reg mrf,
 308                                    int num_regs,
 309                                    unsigned offset);
 310
 311 void gen7_block_read_scratch(struct brw_compile *p,
 312                              struct brw_reg dest,
 313                              int num_regs,
 314                              unsigned offset);
 315
 316 void brw_shader_time_add(struct brw_compile *p,
 317                          struct brw_reg payload,
 318                          uint32_t surf_index);
 319
 320 /* If/else/endif.  Works by manipulating the execution flags on each
 321  * channel.
 322  */
 323 struct brw_instruction *brw_IF(struct brw_compile *p,
 324                                unsigned execute_size);
 325 struct brw_instruction *gen6_IF(struct brw_compile *p, uint32_t conditional,
 326                                 struct brw_reg src0, struct brw_reg src1);
 327
 328 void brw_ELSE(struct brw_compile *p);
 329 void brw_ENDIF(struct brw_compile *p);
 330
 331 /* DO/WHILE loops:
 332  */
 333 struct brw_instruction *brw_DO(struct brw_compile *p,
 334                                unsigned execute_size);
 335
 336 struct brw_instruction *brw_WHILE(struct brw_compile *p);
 337
 338 struct brw_instruction *brw_BREAK(struct brw_compile *p);
 339 struct brw_instruction *brw_CONT(struct brw_compile *p);
 340 struct brw_instruction *gen6_CONT(struct brw_compile *p);
 341 struct brw_instruction *gen6_HALT(struct brw_compile *p);
 342 /* Forward jumps:
 343  */
 344 void brw_land_fwd_jump(struct brw_compile *p, int jmp_insn_idx);
 345
 346
 347
 348 void brw_NOP(struct brw_compile *p);
 349
 350 void brw_WAIT(struct brw_compile *p);
 351
 352 /* Special case: there is never a destination, execution size will be
 353  * taken from src0:
 354  */
 355 void brw_CMP(struct brw_compile *p,
 356              struct brw_reg dest,
 357              unsigned conditional,
 358              struct brw_reg src0,
 359              struct brw_reg src1);
 360
 361 void
 362 brw_untyped_atomic(struct brw_compile *p,
 363                    struct brw_reg dest,
 364                    struct brw_reg mrf,
 365                    unsigned atomic_op,
 366                    unsigned bind_table_index,
 367                    unsigned msg_length,
 368                    unsigned response_length);
 369
 370 void
 371 brw_untyped_surface_read(struct brw_compile *p,
 372                          struct brw_reg dest,
 373                          struct brw_reg mrf,
 374                          unsigned bind_table_index,
 375                          unsigned msg_length,
 376                          unsigned response_length);
 377
 378 /***********************************************************************
 379  * brw_eu_util.c:
 380  */
 381
 382 void brw_copy_indirect_to_indirect(struct brw_compile *p,
 383                                    struct brw_indirect dst_ptr,
 384                                    struct brw_indirect src_ptr,
 385                                    unsigned count);
 386
 387 void brw_copy_from_indirect(struct brw_compile *p,
 388                             struct brw_reg dst,
 389                             struct brw_indirect ptr,
 390                             unsigned count);
 391
 392 void brw_copy4(struct brw_compile *p,
 393                struct brw_reg dst,
 394                struct brw_reg src,
 395                unsigned count);
 396
 397 void brw_copy8(struct brw_compile *p,
 398                struct brw_reg dst,
 399                struct brw_reg src,
 400                unsigned count);
 401
 402 void brw_math_invert( struct brw_compile *p,
 403                       struct brw_reg dst,
 404                       struct brw_reg src);
 405
 406 void brw_set_src1(struct brw_compile *p,
 407                   struct brw_instruction *insn,
 408                   struct brw_reg reg);
 409
 410 void brw_set_uip_jip(struct brw_compile *p);
 411
 412 uint32_t brw_swap_cmod(uint32_t cmod);
 413
 414 /* brw_eu_compact.c */
 415 void brw_init_compaction_tables(struct brw_context *brw);
 416 void brw_compact_instructions(struct brw_compile *p);
 417 void brw_uncompact_instruction(struct brw_context *brw,
 418                                struct brw_instruction *dst,
 419                                struct brw_compact_instruction *src);
 420 bool brw_try_compact_instruction(struct brw_compile *p,
 421                                  struct brw_compact_instruction *dst,
 422                                  struct brw_instruction *src);
 423
 424 void brw_debug_compact_uncompact(struct brw_context *brw,
 425                                  struct brw_instruction *orig,
 426                                  struct brw_instruction *uncompacted);
 427
 428 #ifdef __cplusplus
 429 }
 430 #endif
 431
 432 #endif