2 * Copyright 2013 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 #include "tgsi/tgsi_parse.h"
26 #include "util/u_memory.h"
27 #include "util/u_upload_mgr.h"
28 #include "radeon/r600_pipe_common.h"
29 #include "radeon/radeon_elf_util.h"
30 #include "radeon/radeon_llvm_util.h"
32 #include "radeon/r600_cs.h"
34 #include "si_shader.h"
37 #define MAX_GLOBAL_BUFFERS 20
42 unsigned private_size
;
44 struct si_shader shader
;
46 struct pipe_resource
*global_buffers
[MAX_GLOBAL_BUFFERS
];
49 static void *si_create_compute_state(
50 struct pipe_context
*ctx
,
51 const struct pipe_compute_state
*cso
)
53 struct si_context
*sctx
= (struct si_context
*)ctx
;
54 struct si_screen
*sscreen
= (struct si_screen
*)ctx
->screen
;
55 struct si_compute
*program
= CALLOC_STRUCT(si_compute
);
56 struct si_shader
*shader
= &program
->shader
;
59 program
->ir_type
= cso
->ir_type
;
60 program
->local_size
= cso
->req_local_mem
;
61 program
->private_size
= cso
->req_private_mem
;
62 program
->input_size
= cso
->req_input_mem
;
65 if (cso
->ir_type
== PIPE_SHADER_IR_TGSI
) {
66 struct si_shader_selector sel
;
69 memset(&sel
, 0, sizeof(sel
));
71 sel
.tokens
= tgsi_dup_tokens(cso
->prog
);
76 tgsi_scan_shader(cso
->prog
, &sel
.info
);
77 sel
.type
= PIPE_SHADER_COMPUTE
;
78 sel
.local_size
= cso
->req_local_mem
;
80 p_atomic_inc(&sscreen
->b
.num_shaders_created
);
82 program
->shader
.selector
= &sel
;
84 if (si_compile_tgsi_shader(sscreen
, sctx
->tm
, &program
->shader
,
85 true, &sctx
->b
.debug
)) {
90 scratch_enabled
= shader
->config
.scratch_bytes_per_wave
> 0;
92 shader
->config
.rsrc2
= S_00B84C_USER_SGPR(SI_CS_NUM_USER_SGPR
) |
93 S_00B84C_SCRATCH_EN(scratch_enabled
) |
94 S_00B84C_TGID_X_EN(1) | S_00B84C_TGID_Y_EN(1) |
95 S_00B84C_TGID_Z_EN(1) | S_00B84C_TIDIG_COMP_CNT(2) |
96 S_00B84C_LDS_SIZE(shader
->config
.lds_size
);
100 const struct pipe_llvm_program_header
*header
;
103 code
= cso
->prog
+ sizeof(struct pipe_llvm_program_header
);
105 radeon_elf_read(code
, header
->num_bytes
, &program
->shader
.binary
);
106 si_shader_binary_read_config(&program
->shader
.binary
,
107 &program
->shader
.config
, 0);
109 si_shader_dump(sctx
->screen
, &program
->shader
, &sctx
->b
.debug
,
110 TGSI_PROCESSOR_COMPUTE
, stderr
);
111 si_shader_binary_upload(sctx
->screen
, &program
->shader
);
116 static void si_bind_compute_state(struct pipe_context
*ctx
, void *state
)
118 struct si_context
*sctx
= (struct si_context
*)ctx
;
119 sctx
->cs_shader_state
.program
= (struct si_compute
*)state
;
122 static void si_set_global_binding(
123 struct pipe_context
*ctx
, unsigned first
, unsigned n
,
124 struct pipe_resource
**resources
,
128 struct si_context
*sctx
= (struct si_context
*)ctx
;
129 struct si_compute
*program
= sctx
->cs_shader_state
.program
;
132 for (i
= first
; i
< first
+ n
; i
++) {
133 pipe_resource_reference(&program
->global_buffers
[i
], NULL
);
138 for (i
= first
; i
< first
+ n
; i
++) {
141 pipe_resource_reference(&program
->global_buffers
[i
], resources
[i
]);
142 va
= r600_resource(resources
[i
])->gpu_address
;
143 offset
= util_le32_to_cpu(*handles
[i
]);
145 va
= util_cpu_to_le64(va
);
146 memcpy(handles
[i
], &va
, sizeof(va
));
150 static void si_initialize_compute(struct si_context
*sctx
)
152 struct radeon_winsys_cs
*cs
= sctx
->b
.gfx
.cs
;
154 radeon_set_sh_reg_seq(cs
, R_00B810_COMPUTE_START_X
, 3);
159 radeon_set_sh_reg_seq(cs
, R_00B854_COMPUTE_RESOURCE_LIMITS
, 3);
161 /* R_00B858_COMPUTE_STATIC_THREAD_MGMT_SE0 / SE1 */
162 radeon_emit(cs
, S_00B858_SH0_CU_EN(0xffff) | S_00B858_SH1_CU_EN(0xffff));
163 radeon_emit(cs
, S_00B85C_SH0_CU_EN(0xffff) | S_00B85C_SH1_CU_EN(0xffff));
165 if (sctx
->b
.chip_class
>= CIK
) {
166 /* Also set R_00B858_COMPUTE_STATIC_THREAD_MGMT_SE2 / SE3 */
167 radeon_set_sh_reg_seq(cs
,
168 R_00B864_COMPUTE_STATIC_THREAD_MGMT_SE2
, 2);
169 radeon_emit(cs
, S_00B864_SH0_CU_EN(0xffff) |
170 S_00B864_SH1_CU_EN(0xffff));
171 radeon_emit(cs
, S_00B868_SH0_CU_EN(0xffff) |
172 S_00B868_SH1_CU_EN(0xffff));
175 /* This register has been moved to R_00CD20_COMPUTE_MAX_WAVE_ID
176 * and is now per pipe, so it should be handled in the
177 * kernel if we want to use something other than the default value,
178 * which is now 0x22f.
180 if (sctx
->b
.chip_class
<= SI
) {
181 /* XXX: This should be:
182 * (number of compute units) * 4 * (waves per simd) - 1 */
184 radeon_set_sh_reg(cs
, R_00B82C_COMPUTE_MAX_WAVE_ID
,
185 0x190 /* Default value */);
188 sctx
->cs_shader_state
.emitted_program
= NULL
;
189 sctx
->cs_shader_state
.initialized
= true;
192 static bool si_setup_compute_scratch_buffer(struct si_context
*sctx
,
193 struct si_shader
*shader
,
194 struct si_shader_config
*config
)
196 uint64_t scratch_bo_size
, scratch_needed
;
198 scratch_needed
= config
->scratch_bytes_per_wave
* sctx
->scratch_waves
;
199 if (sctx
->compute_scratch_buffer
)
200 scratch_bo_size
= sctx
->compute_scratch_buffer
->b
.b
.width0
;
202 if (scratch_bo_size
< scratch_needed
) {
203 pipe_resource_reference(
204 (struct pipe_resource
**)&sctx
->compute_scratch_buffer
,
207 sctx
->compute_scratch_buffer
=
208 si_resource_create_custom(&sctx
->screen
->b
.b
,
209 PIPE_USAGE_DEFAULT
, scratch_needed
);
211 if (!sctx
->compute_scratch_buffer
)
215 if (sctx
->compute_scratch_buffer
!= shader
->scratch_bo
&& scratch_needed
) {
216 uint64_t scratch_va
= sctx
->compute_scratch_buffer
->gpu_address
;
218 si_shader_apply_scratch_relocs(sctx
, shader
, scratch_va
);
220 if (si_shader_binary_upload(sctx
->screen
, shader
))
223 r600_resource_reference(&shader
->scratch_bo
,
224 sctx
->compute_scratch_buffer
);
230 static bool si_switch_compute_shader(struct si_context
*sctx
,
231 struct si_compute
*program
,
232 struct si_shader
*shader
, unsigned offset
)
234 struct radeon_winsys_cs
*cs
= sctx
->b
.gfx
.cs
;
235 struct si_shader_config inline_config
= {0};
236 struct si_shader_config
*config
;
239 if (sctx
->cs_shader_state
.emitted_program
== program
&&
240 sctx
->cs_shader_state
.offset
== offset
)
243 if (program
->ir_type
== PIPE_SHADER_IR_TGSI
) {
244 config
= &shader
->config
;
248 config
= &inline_config
;
249 si_shader_binary_read_config(&shader
->binary
, config
, offset
);
251 lds_blocks
= config
->lds_size
;
252 /* XXX: We are over allocating LDS. For SI, the shader reports
253 * LDS in blocks of 256 bytes, so if there are 4 bytes lds
254 * allocated in the shader and 4 bytes allocated by the state
255 * tracker, then we will set LDS_SIZE to 512 bytes rather than 256.
257 if (sctx
->b
.chip_class
<= SI
) {
258 lds_blocks
+= align(program
->local_size
, 256) >> 8;
260 lds_blocks
+= align(program
->local_size
, 512) >> 9;
263 assert(lds_blocks
<= 0xFF);
265 config
->rsrc2
&= C_00B84C_LDS_SIZE
;
266 config
->rsrc2
|= S_00B84C_LDS_SIZE(lds_blocks
);
269 if (!si_setup_compute_scratch_buffer(sctx
, shader
, config
))
272 if (shader
->scratch_bo
) {
273 COMPUTE_DBG(sctx
->screen
, "Waves: %u; Scratch per wave: %u bytes; "
274 "Total Scratch: %u bytes\n", sctx
->scratch_waves
,
275 config
->scratch_bytes_per_wave
,
276 config
->scratch_bytes_per_wave
*
277 sctx
->scratch_waves
);
279 radeon_add_to_buffer_list(&sctx
->b
, &sctx
->b
.gfx
,
280 shader
->scratch_bo
, RADEON_USAGE_READWRITE
,
281 RADEON_PRIO_SCRATCH_BUFFER
);
284 shader_va
= shader
->bo
->gpu_address
+ offset
;
286 radeon_add_to_buffer_list(&sctx
->b
, &sctx
->b
.gfx
, shader
->bo
,
287 RADEON_USAGE_READ
, RADEON_PRIO_USER_SHADER
);
289 radeon_set_sh_reg_seq(cs
, R_00B830_COMPUTE_PGM_LO
, 2);
290 radeon_emit(cs
, shader_va
>> 8);
291 radeon_emit(cs
, shader_va
>> 40);
293 radeon_set_sh_reg_seq(cs
, R_00B848_COMPUTE_PGM_RSRC1
, 2);
294 radeon_emit(cs
, config
->rsrc1
);
295 radeon_emit(cs
, config
->rsrc2
);
297 radeon_set_sh_reg(cs
, R_00B860_COMPUTE_TMPRING_SIZE
,
298 S_00B860_WAVES(sctx
->scratch_waves
)
299 | S_00B860_WAVESIZE(config
->scratch_bytes_per_wave
>> 10));
301 sctx
->cs_shader_state
.emitted_program
= program
;
302 sctx
->cs_shader_state
.offset
= offset
;
307 static void si_upload_compute_input(struct si_context
*sctx
,
308 const struct pipe_grid_info
*info
)
310 struct radeon_winsys_cs
*cs
= sctx
->b
.gfx
.cs
;
311 struct si_compute
*program
= sctx
->cs_shader_state
.program
;
312 struct r600_resource
*input_buffer
= NULL
;
313 unsigned kernel_args_size
;
314 unsigned num_work_size_bytes
= 36;
315 uint32_t kernel_args_offset
= 0;
316 uint32_t *kernel_args
;
317 void *kernel_args_ptr
;
318 uint64_t kernel_args_va
;
321 /* The extra num_work_size_bytes are for work group / work item size information */
322 kernel_args_size
= program
->input_size
+ num_work_size_bytes
;
324 u_upload_alloc(sctx
->b
.uploader
, 0, kernel_args_size
, 256,
326 (struct pipe_resource
**)&input_buffer
, &kernel_args_ptr
);
328 kernel_args
= (uint32_t*)kernel_args_ptr
;
329 for (i
= 0; i
< 3; i
++) {
330 kernel_args
[i
] = info
->grid
[i
];
331 kernel_args
[i
+ 3] = info
->grid
[i
] * info
->block
[i
];
332 kernel_args
[i
+ 6] = info
->block
[i
];
335 memcpy(kernel_args
+ (num_work_size_bytes
/ 4), info
->input
,
336 program
->input_size
);
339 for (i
= 0; i
< (kernel_args_size
/ 4); i
++) {
340 COMPUTE_DBG(sctx
->screen
, "input %u : %u\n", i
,
344 kernel_args_va
= input_buffer
->gpu_address
+ kernel_args_offset
;
346 radeon_add_to_buffer_list(&sctx
->b
, &sctx
->b
.gfx
, input_buffer
,
347 RADEON_USAGE_READ
, RADEON_PRIO_CONST_BUFFER
);
349 radeon_set_sh_reg_seq(cs
, R_00B900_COMPUTE_USER_DATA_0
, 2);
350 radeon_emit(cs
, kernel_args_va
);
351 radeon_emit(cs
, S_008F04_BASE_ADDRESS_HI (kernel_args_va
>> 32) |
354 pipe_resource_reference((struct pipe_resource
**)&input_buffer
, NULL
);
357 static void si_setup_tgsi_grid(struct si_context
*sctx
,
358 const struct pipe_grid_info
*info
)
360 struct radeon_winsys_cs
*cs
= sctx
->b
.gfx
.cs
;
361 unsigned grid_size_reg
= R_00B900_COMPUTE_USER_DATA_0
+
362 4 * SI_SGPR_GRID_SIZE
;
364 if (info
->indirect
) {
365 uint64_t base_va
= r600_resource(info
->indirect
)->gpu_address
;
366 uint64_t va
= base_va
+ info
->indirect_offset
;
369 radeon_add_to_buffer_list(&sctx
->b
, &sctx
->b
.gfx
,
370 (struct r600_resource
*)info
->indirect
,
371 RADEON_USAGE_READ
, RADEON_PRIO_DRAW_INDIRECT
);
373 for (i
= 0; i
< 3; ++i
) {
374 radeon_emit(cs
, PKT3(PKT3_COPY_DATA
, 4, 0));
375 radeon_emit(cs
, COPY_DATA_SRC_SEL(COPY_DATA_MEM
) |
376 COPY_DATA_DST_SEL(COPY_DATA_REG
));
377 radeon_emit(cs
, (va
+ 4 * i
));
378 radeon_emit(cs
, (va
+ 4 * i
) >> 32);
379 radeon_emit(cs
, (grid_size_reg
>> 2) + i
);
384 radeon_set_sh_reg_seq(cs
, grid_size_reg
, 3);
385 radeon_emit(cs
, info
->grid
[0]);
386 radeon_emit(cs
, info
->grid
[1]);
387 radeon_emit(cs
, info
->grid
[2]);
391 static void si_emit_dispatch_packets(struct si_context
*sctx
,
392 const struct pipe_grid_info
*info
)
394 struct radeon_winsys_cs
*cs
= sctx
->b
.gfx
.cs
;
395 bool render_cond_bit
= sctx
->b
.render_cond
&& !sctx
->b
.render_cond_force_off
;
397 radeon_set_sh_reg_seq(cs
, R_00B81C_COMPUTE_NUM_THREAD_X
, 3);
398 radeon_emit(cs
, S_00B81C_NUM_THREAD_FULL(info
->block
[0]));
399 radeon_emit(cs
, S_00B820_NUM_THREAD_FULL(info
->block
[1]));
400 radeon_emit(cs
, S_00B824_NUM_THREAD_FULL(info
->block
[2]));
402 if (info
->indirect
) {
403 uint64_t base_va
= r600_resource(info
->indirect
)->gpu_address
;
405 radeon_add_to_buffer_list(&sctx
->b
, &sctx
->b
.gfx
,
406 (struct r600_resource
*)info
->indirect
,
407 RADEON_USAGE_READ
, RADEON_PRIO_DRAW_INDIRECT
);
409 radeon_emit(cs
, PKT3(PKT3_SET_BASE
, 2, 0) |
410 PKT3_SHADER_TYPE_S(1));
412 radeon_emit(cs
, base_va
);
413 radeon_emit(cs
, base_va
>> 32);
415 radeon_emit(cs
, PKT3(PKT3_DISPATCH_INDIRECT
, 1, render_cond_bit
) |
416 PKT3_SHADER_TYPE_S(1));
417 radeon_emit(cs
, info
->indirect_offset
);
420 radeon_emit(cs
, PKT3(PKT3_DISPATCH_DIRECT
, 3, render_cond_bit
) |
421 PKT3_SHADER_TYPE_S(1));
422 radeon_emit(cs
, info
->grid
[0]);
423 radeon_emit(cs
, info
->grid
[1]);
424 radeon_emit(cs
, info
->grid
[2]);
430 static void si_launch_grid(
431 struct pipe_context
*ctx
, const struct pipe_grid_info
*info
)
433 struct si_context
*sctx
= (struct si_context
*)ctx
;
434 struct si_compute
*program
= sctx
->cs_shader_state
.program
;
437 si_decompress_compute_textures(sctx
);
439 si_need_cs_space(sctx
);
441 if (!sctx
->cs_shader_state
.initialized
)
442 si_initialize_compute(sctx
);
445 si_emit_cache_flush(sctx
, NULL
);
447 if (!si_switch_compute_shader(sctx
, program
, &program
->shader
, info
->pc
))
450 si_upload_compute_shader_descriptors(sctx
);
451 si_emit_compute_shader_userdata(sctx
);
453 if (si_is_atom_dirty(sctx
, sctx
->atoms
.s
.render_cond
)) {
454 sctx
->atoms
.s
.render_cond
->emit(&sctx
->b
,
455 sctx
->atoms
.s
.render_cond
);
456 si_set_atom_dirty(sctx
, sctx
->atoms
.s
.render_cond
, false);
459 if (program
->input_size
|| program
->ir_type
== PIPE_SHADER_IR_NATIVE
)
460 si_upload_compute_input(sctx
, info
);
463 for (i
= 0; i
< MAX_GLOBAL_BUFFERS
; i
++) {
464 struct r600_resource
*buffer
=
465 (struct r600_resource
*)program
->global_buffers
[i
];
469 radeon_add_to_buffer_list(&sctx
->b
, &sctx
->b
.gfx
, buffer
,
470 RADEON_USAGE_READWRITE
,
471 RADEON_PRIO_COMPUTE_GLOBAL
);
474 if (program
->ir_type
== PIPE_SHADER_IR_TGSI
)
475 si_setup_tgsi_grid(sctx
, info
);
477 si_ce_pre_draw_synchronization(sctx
);
479 si_emit_dispatch_packets(sctx
, info
);
481 si_ce_post_draw_synchronization(sctx
);
485 static void si_delete_compute_state(struct pipe_context
*ctx
, void* state
){
486 struct si_compute
*program
= (struct si_compute
*)state
;
487 struct si_context
*sctx
= (struct si_context
*)ctx
;
493 if (program
== sctx
->cs_shader_state
.program
)
494 sctx
->cs_shader_state
.program
= NULL
;
496 if (program
== sctx
->cs_shader_state
.emitted_program
)
497 sctx
->cs_shader_state
.emitted_program
= NULL
;
499 si_shader_destroy(&program
->shader
);
503 static void si_set_compute_resources(struct pipe_context
* ctx_
,
504 unsigned start
, unsigned count
,
505 struct pipe_surface
** surfaces
) { }
507 void si_init_compute_functions(struct si_context
*sctx
)
509 sctx
->b
.b
.create_compute_state
= si_create_compute_state
;
510 sctx
->b
.b
.delete_compute_state
= si_delete_compute_state
;
511 sctx
->b
.b
.bind_compute_state
= si_bind_compute_state
;
512 /* ctx->context.create_sampler_view = evergreen_compute_create_sampler_view; */
513 sctx
->b
.b
.set_compute_resources
= si_set_compute_resources
;
514 sctx
->b
.b
.set_global_binding
= si_set_global_binding
;
515 sctx
->b
.b
.launch_grid
= si_launch_grid
;