2 Copyright (C) Intel Corp. 2006. All Rights Reserved.
3 Intel funded Tungsten Graphics to
4 develop this 3D driver.
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:
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.
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.
26 **********************************************************************/
29 * Keith Whitwell <keithw@vmware.com>
39 #include "brw_eu_defines.h"
41 #include "brw_disasm_info.h"
47 #define BRW_EU_MAX_INSN_STACK 5
49 struct brw_insn_state
{
50 /* One of BRW_EXECUTE_* */
53 /* Group in units of channels */
56 /* Compression control on gen4-5 */
59 /* One of BRW_MASK_* */
60 unsigned mask_control
:1;
64 /* One of BRW_ALIGN_* */
65 unsigned access_mode
:1;
67 /* One of BRW_PREDICATE_* */
68 enum brw_predicate predicate
:4;
72 /* Flag subreg. Bottom bit is subreg, top bit is reg */
73 unsigned flag_subreg
:2;
75 bool acc_wr_control
:1;
79 /* A helper for accessing the last instruction emitted. This makes it easy
80 * to set various bits on an instruction without having to create temporary
81 * variable and assign the emitted instruction to those.
83 #define brw_last_inst (&p->store[p->nr_insn - 1])
89 unsigned int next_insn_offset
;
93 /* Allow clients to push/pop instruction state:
95 struct brw_insn_state stack
[BRW_EU_MAX_INSN_STACK
];
96 struct brw_insn_state
*current
;
98 /** Whether or not the user wants automatic exec sizes
100 * If true, codegen will try to automatically infer the exec size of an
101 * instruction from the width of the destination register. If false, it
102 * will take whatever is set by brw_set_default_exec_size verbatim.
104 * This is set to true by default in brw_init_codegen.
106 bool automatic_exec_sizes
;
108 bool single_program_flow
;
109 const struct gen_device_info
*devinfo
;
111 /* Control flow stacks:
112 * - if_stack contains IF and ELSE instructions which must be patched
113 * (and popped) once the matching ENDIF instruction is encountered.
115 * Just store the instruction pointer(an index).
119 int if_stack_array_size
;
122 * loop_stack contains the instruction pointers of the starts of loops which
123 * must be patched (and popped) once the matching WHILE instruction is
128 * pre-gen6, the BREAK and CONT instructions had to tell how many IF/ENDIF
129 * blocks they were popping out of, to fix up the mask stack. This tracks
130 * the IF/ENDIF nesting in each current nested loop level.
132 int *if_depth_in_loop
;
133 int loop_stack_depth
;
134 int loop_stack_array_size
;
137 void brw_pop_insn_state( struct brw_codegen
*p
);
138 void brw_push_insn_state( struct brw_codegen
*p
);
139 unsigned brw_get_default_exec_size(struct brw_codegen
*p
);
140 unsigned brw_get_default_group(struct brw_codegen
*p
);
141 unsigned brw_get_default_access_mode(struct brw_codegen
*p
);
142 void brw_set_default_exec_size(struct brw_codegen
*p
, unsigned value
);
143 void brw_set_default_mask_control( struct brw_codegen
*p
, unsigned value
);
144 void brw_set_default_saturate( struct brw_codegen
*p
, bool enable
);
145 void brw_set_default_access_mode( struct brw_codegen
*p
, unsigned access_mode
);
146 void brw_inst_set_compression(const struct gen_device_info
*devinfo
,
147 brw_inst
*inst
, bool on
);
148 void brw_set_default_compression(struct brw_codegen
*p
, bool on
);
149 void brw_inst_set_group(const struct gen_device_info
*devinfo
,
150 brw_inst
*inst
, unsigned group
);
151 void brw_set_default_group(struct brw_codegen
*p
, unsigned group
);
152 void brw_set_default_compression_control(struct brw_codegen
*p
, enum brw_compression c
);
153 void brw_set_default_predicate_control( struct brw_codegen
*p
, unsigned pc
);
154 void brw_set_default_predicate_inverse(struct brw_codegen
*p
, bool predicate_inverse
);
155 void brw_set_default_flag_reg(struct brw_codegen
*p
, int reg
, int subreg
);
156 void brw_set_default_acc_write_control(struct brw_codegen
*p
, unsigned value
);
158 void brw_init_codegen(const struct gen_device_info
*, struct brw_codegen
*p
,
160 int brw_disassemble_inst(FILE *file
, const struct gen_device_info
*devinfo
,
161 const struct brw_inst
*inst
, bool is_compacted
);
162 void brw_disassemble(const struct gen_device_info
*devinfo
,
163 const void *assembly
, int start
, int end
, FILE *out
);
164 const unsigned *brw_get_program( struct brw_codegen
*p
, unsigned *sz
);
166 brw_inst
*brw_next_insn(struct brw_codegen
*p
, unsigned opcode
);
167 void brw_set_dest(struct brw_codegen
*p
, brw_inst
*insn
, struct brw_reg dest
);
168 void brw_set_src0(struct brw_codegen
*p
, brw_inst
*insn
, struct brw_reg reg
);
170 void gen6_resolve_implied_move(struct brw_codegen
*p
,
172 unsigned msg_reg_nr
);
174 /* Helpers for regular instructions:
177 brw_inst *brw_##OP(struct brw_codegen *p, \
178 struct brw_reg dest, \
179 struct brw_reg src0);
182 brw_inst *brw_##OP(struct brw_codegen *p, \
183 struct brw_reg dest, \
184 struct brw_reg src0, \
185 struct brw_reg src1);
188 brw_inst *brw_##OP(struct brw_codegen *p, \
189 struct brw_reg dest, \
190 struct brw_reg src0, \
191 struct brw_reg src1, \
192 struct brw_reg src2);
195 void brw_##OP(struct brw_codegen *p, struct brw_reg dest, struct brw_reg src0);
246 /* Helpers for SEND instruction:
250 * Construct a message descriptor immediate with the specified common
251 * descriptor controls.
253 static inline uint32_t
254 brw_message_desc(const struct gen_device_info
*devinfo
,
256 unsigned response_length
,
259 if (devinfo
->gen
>= 5) {
260 return (SET_BITS(msg_length
, 28, 25) |
261 SET_BITS(response_length
, 24, 20) |
262 SET_BITS(header_present
, 19, 19));
264 return (SET_BITS(msg_length
, 23, 20) |
265 SET_BITS(response_length
, 19, 16));
270 * Construct a message descriptor immediate with the specified sampler
273 static inline uint32_t
274 brw_sampler_desc(const struct gen_device_info
*devinfo
,
275 unsigned binding_table_index
,
279 unsigned return_format
)
281 const unsigned desc
= (SET_BITS(binding_table_index
, 7, 0) |
282 SET_BITS(sampler
, 11, 8));
283 if (devinfo
->gen
>= 7)
284 return (desc
| SET_BITS(msg_type
, 16, 12) |
285 SET_BITS(simd_mode
, 18, 17));
286 else if (devinfo
->gen
>= 5)
287 return (desc
| SET_BITS(msg_type
, 15, 12) |
288 SET_BITS(simd_mode
, 17, 16));
289 else if (devinfo
->is_g4x
)
290 return desc
| SET_BITS(msg_type
, 15, 12);
292 return (desc
| SET_BITS(return_format
, 13, 12) |
293 SET_BITS(msg_type
, 15, 14));
297 * Construct a message descriptor immediate with the specified dataport read
300 static inline uint32_t
301 brw_dp_read_desc(const struct gen_device_info
*devinfo
,
302 unsigned binding_table_index
,
303 unsigned msg_control
,
305 unsigned target_cache
)
307 const unsigned desc
= SET_BITS(binding_table_index
, 7, 0);
308 if (devinfo
->gen
>= 7)
309 return (desc
| SET_BITS(msg_control
, 13, 8) |
310 SET_BITS(msg_type
, 17, 14));
311 else if (devinfo
->gen
>= 6)
312 return (desc
| SET_BITS(msg_control
, 12, 8) |
313 SET_BITS(msg_type
, 16, 13));
314 else if (devinfo
->gen
>= 5 || devinfo
->is_g4x
)
315 return (desc
| SET_BITS(msg_control
, 10, 8) |
316 SET_BITS(msg_type
, 13, 11) |
317 SET_BITS(target_cache
, 15, 14));
319 return (desc
| SET_BITS(msg_control
, 11, 8) |
320 SET_BITS(msg_type
, 13, 12) |
321 SET_BITS(target_cache
, 15, 14));
325 * Construct a message descriptor immediate with the specified dataport write
328 static inline uint32_t
329 brw_dp_write_desc(const struct gen_device_info
*devinfo
,
330 unsigned binding_table_index
,
331 unsigned msg_control
,
333 unsigned last_render_target
,
334 unsigned send_commit_msg
)
336 const unsigned desc
= SET_BITS(binding_table_index
, 7, 0);
337 if (devinfo
->gen
>= 7)
338 return (desc
| SET_BITS(msg_control
, 13, 8) |
339 SET_BITS(last_render_target
, 12, 12) |
340 SET_BITS(msg_type
, 17, 14));
341 else if (devinfo
->gen
>= 6)
342 return (desc
| SET_BITS(msg_control
, 12, 8) |
343 SET_BITS(last_render_target
, 12, 12) |
344 SET_BITS(msg_type
, 16, 13) |
345 SET_BITS(send_commit_msg
, 17, 17));
347 return (desc
| SET_BITS(msg_control
, 11, 8) |
348 SET_BITS(last_render_target
, 11, 11) |
349 SET_BITS(msg_type
, 14, 12) |
350 SET_BITS(send_commit_msg
, 15, 15));
354 * Construct a message descriptor immediate with the specified dataport
355 * surface function controls.
357 static inline uint32_t
358 brw_dp_surface_desc(const struct gen_device_info
*devinfo
,
360 unsigned msg_control
)
362 assert(devinfo
->gen
>= 7);
363 return (SET_BITS(msg_control
, 13, 8) |
364 SET_BITS(msg_type
, 17, 14));
368 * Construct a message descriptor immediate with the specified pixel
369 * interpolator function controls.
371 static inline uint32_t
372 brw_pixel_interp_desc(const struct gen_device_info
*devinfo
,
378 return (SET_BITS(slot_group
, 11, 11) |
379 SET_BITS(msg_type
, 13, 12) |
380 SET_BITS(!!noperspective
, 14, 14) |
381 SET_BITS(simd_mode
, 16, 16));
384 void brw_urb_WRITE(struct brw_codegen
*p
,
388 enum brw_urb_write_flags flags
,
390 unsigned response_length
,
395 * Send message to shared unit \p sfid with a possibly indirect descriptor \p
396 * desc. If \p desc is not an immediate it will be transparently loaded to an
397 * address register using an OR instruction.
400 brw_send_indirect_message(struct brw_codegen
*p
,
403 struct brw_reg payload
,
407 void brw_ff_sync(struct brw_codegen
*p
,
412 unsigned response_length
,
415 void brw_svb_write(struct brw_codegen
*p
,
419 unsigned binding_table_index
,
420 bool send_commit_msg
);
422 brw_inst
*brw_fb_WRITE(struct brw_codegen
*p
,
423 struct brw_reg payload
,
424 struct brw_reg implied_header
,
425 unsigned msg_control
,
426 unsigned binding_table_index
,
428 unsigned response_length
,
430 bool last_render_target
,
431 bool header_present
);
433 brw_inst
*gen9_fb_READ(struct brw_codegen
*p
,
435 struct brw_reg payload
,
436 unsigned binding_table_index
,
438 unsigned response_length
,
441 void brw_SAMPLE(struct brw_codegen
*p
,
445 unsigned binding_table_index
,
448 unsigned response_length
,
450 unsigned header_present
,
452 unsigned return_format
);
454 void brw_adjust_sampler_state_pointer(struct brw_codegen
*p
,
455 struct brw_reg header
,
456 struct brw_reg sampler_index
);
458 void gen4_math(struct brw_codegen
*p
,
463 unsigned precision
);
465 void gen6_math(struct brw_codegen
*p
,
469 struct brw_reg src1
);
471 void brw_oword_block_read(struct brw_codegen
*p
,
475 uint32_t bind_table_index
);
477 unsigned brw_scratch_surface_idx(const struct brw_codegen
*p
);
479 void brw_oword_block_read_scratch(struct brw_codegen
*p
,
485 void brw_oword_block_write_scratch(struct brw_codegen
*p
,
490 void gen7_block_read_scratch(struct brw_codegen
*p
,
495 void brw_shader_time_add(struct brw_codegen
*p
,
496 struct brw_reg payload
,
497 uint32_t surf_index
);
500 * Return the generation-specific jump distance scaling factor.
502 * Given the number of instructions to jump, we need to scale by
503 * some number to obtain the actual jump distance to program in an
506 static inline unsigned
507 brw_jump_scale(const struct gen_device_info
*devinfo
)
509 /* Broadwell measures jump targets in bytes. */
510 if (devinfo
->gen
>= 8)
513 /* Ironlake and later measure jump targets in 64-bit data chunks (in order
514 * (to support compaction), so each 128-bit instruction requires 2 chunks.
516 if (devinfo
->gen
>= 5)
519 /* Gen4 simply uses the number of 128-bit instructions. */
523 void brw_barrier(struct brw_codegen
*p
, struct brw_reg src
);
525 /* If/else/endif. Works by manipulating the execution flags on each
528 brw_inst
*brw_IF(struct brw_codegen
*p
, unsigned execute_size
);
529 brw_inst
*gen6_IF(struct brw_codegen
*p
, enum brw_conditional_mod conditional
,
530 struct brw_reg src0
, struct brw_reg src1
);
532 void brw_ELSE(struct brw_codegen
*p
);
533 void brw_ENDIF(struct brw_codegen
*p
);
537 brw_inst
*brw_DO(struct brw_codegen
*p
, unsigned execute_size
);
539 brw_inst
*brw_WHILE(struct brw_codegen
*p
);
541 brw_inst
*brw_BREAK(struct brw_codegen
*p
);
542 brw_inst
*brw_CONT(struct brw_codegen
*p
);
543 brw_inst
*gen6_HALT(struct brw_codegen
*p
);
547 void brw_land_fwd_jump(struct brw_codegen
*p
, int jmp_insn_idx
);
549 brw_inst
*brw_JMPI(struct brw_codegen
*p
, struct brw_reg index
,
550 unsigned predicate_control
);
552 void brw_NOP(struct brw_codegen
*p
);
554 void brw_WAIT(struct brw_codegen
*p
);
556 /* Special case: there is never a destination, execution size will be
559 void brw_CMP(struct brw_codegen
*p
,
561 unsigned conditional
,
563 struct brw_reg src1
);
566 brw_untyped_atomic(struct brw_codegen
*p
,
568 struct brw_reg payload
,
569 struct brw_reg surface
,
572 bool response_expected
,
573 bool header_present
);
576 brw_untyped_surface_read(struct brw_codegen
*p
,
578 struct brw_reg payload
,
579 struct brw_reg surface
,
581 unsigned num_channels
);
584 brw_untyped_surface_write(struct brw_codegen
*p
,
585 struct brw_reg payload
,
586 struct brw_reg surface
,
588 unsigned num_channels
,
589 bool header_present
);
592 brw_typed_atomic(struct brw_codegen
*p
,
594 struct brw_reg payload
,
595 struct brw_reg surface
,
598 bool response_expected
,
599 bool header_present
);
602 brw_typed_surface_read(struct brw_codegen
*p
,
604 struct brw_reg payload
,
605 struct brw_reg surface
,
607 unsigned num_channels
,
608 bool header_present
);
611 brw_typed_surface_write(struct brw_codegen
*p
,
612 struct brw_reg payload
,
613 struct brw_reg surface
,
615 unsigned num_channels
,
616 bool header_present
);
619 brw_byte_scattered_read(struct brw_codegen
*p
,
621 struct brw_reg payload
,
622 struct brw_reg surface
,
627 brw_byte_scattered_write(struct brw_codegen
*p
,
628 struct brw_reg payload
,
629 struct brw_reg surface
,
632 bool header_present
);
635 brw_memory_fence(struct brw_codegen
*p
,
637 enum opcode send_op
);
640 brw_pixel_interpolator_query(struct brw_codegen
*p
,
647 unsigned response_length
);
650 brw_find_live_channel(struct brw_codegen
*p
,
652 struct brw_reg mask
);
655 brw_broadcast(struct brw_codegen
*p
,
661 brw_rounding_mode(struct brw_codegen
*p
,
662 enum brw_rnd_mode mode
);
664 /***********************************************************************
668 void brw_copy_indirect_to_indirect(struct brw_codegen
*p
,
669 struct brw_indirect dst_ptr
,
670 struct brw_indirect src_ptr
,
673 void brw_copy_from_indirect(struct brw_codegen
*p
,
675 struct brw_indirect ptr
,
678 void brw_copy4(struct brw_codegen
*p
,
683 void brw_copy8(struct brw_codegen
*p
,
688 void brw_math_invert( struct brw_codegen
*p
,
692 void brw_set_src1(struct brw_codegen
*p
, brw_inst
*insn
, struct brw_reg reg
);
694 void brw_set_desc_ex(struct brw_codegen
*p
, brw_inst
*insn
,
695 unsigned desc
, unsigned ex_desc
);
698 brw_set_desc(struct brw_codegen
*p
, brw_inst
*insn
, unsigned desc
)
700 brw_set_desc_ex(p
, insn
, desc
, 0);
703 void brw_set_uip_jip(struct brw_codegen
*p
, int start_offset
);
705 enum brw_conditional_mod
brw_negate_cmod(uint32_t cmod
);
706 enum brw_conditional_mod
brw_swap_cmod(uint32_t cmod
);
708 /* brw_eu_compact.c */
709 void brw_init_compaction_tables(const struct gen_device_info
*devinfo
);
710 void brw_compact_instructions(struct brw_codegen
*p
, int start_offset
,
711 struct disasm_info
*disasm
);
712 void brw_uncompact_instruction(const struct gen_device_info
*devinfo
,
713 brw_inst
*dst
, brw_compact_inst
*src
);
714 bool brw_try_compact_instruction(const struct gen_device_info
*devinfo
,
715 brw_compact_inst
*dst
, const brw_inst
*src
);
717 void brw_debug_compact_uncompact(const struct gen_device_info
*devinfo
,
718 brw_inst
*orig
, brw_inst
*uncompacted
);
720 /* brw_eu_validate.c */
721 bool brw_validate_instructions(const struct gen_device_info
*devinfo
,
722 const void *assembly
, int start_offset
, int end_offset
,
723 struct disasm_info
*disasm
);
726 next_offset(const struct gen_device_info
*devinfo
, void *store
, int offset
)
728 brw_inst
*insn
= (brw_inst
*)((char *)store
+ offset
);
730 if (brw_inst_cmpt_control(devinfo
, insn
))
737 /* The union is an implementation detail used by brw_opcode_desc() to handle
738 * opcodes that have been reused for different instructions across hardware
741 * The gens field acts as a tag. If it is non-zero, name points to a string
742 * containing the instruction mnemonic. If it is zero, the table field is
743 * valid and either points to a secondary opcode_desc table with 'size'
744 * elements or is NULL and no such instruction exists for the opcode.
752 const struct opcode_desc
*table
;
760 const struct opcode_desc
*
761 brw_opcode_desc(const struct gen_device_info
*devinfo
, enum opcode opcode
);
764 is_3src(const struct gen_device_info
*devinfo
, enum opcode opcode
)
766 const struct opcode_desc
*desc
= brw_opcode_desc(devinfo
, opcode
);
767 return desc
&& desc
->nsrc
== 3;
770 /** Maximum SEND message length */
771 #define BRW_MAX_MSG_LENGTH 15
773 /** First MRF register used by pull loads */
774 #define FIRST_SPILL_MRF(gen) ((gen) == 6 ? 21 : 13)
776 /** First MRF register used by spills */
777 #define FIRST_PULL_LOAD_MRF(gen) ((gen) == 6 ? 16 : 13)