2 * Copyright © 2017 Intel Corporation
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5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
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8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included
12 * in all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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20 * DEALINGS IN THE SOFTWARE.
24 * @file iris_program_cache.c
26 * The in-memory program cache. This is basically a hash table mapping
27 * API-specified shaders and a state key to a compiled variant. It also
28 * takes care of uploading shader assembly into a BO for use on the GPU.
33 #include "pipe/p_defines.h"
34 #include "pipe/p_state.h"
35 #include "pipe/p_context.h"
36 #include "pipe/p_screen.h"
37 #include "util/u_atomic.h"
38 #include "util/u_upload_mgr.h"
39 #include "compiler/nir/nir.h"
40 #include "compiler/nir/nir_builder.h"
41 #include "intel/compiler/brw_compiler.h"
42 #include "intel/compiler/brw_eu.h"
43 #include "intel/compiler/brw_nir.h"
44 #include "iris_context.h"
45 #include "iris_resource.h"
49 enum iris_program_cache_id cache_id
;
53 static struct keybox
*
54 make_keybox(void *mem_ctx
,
55 enum iris_program_cache_id cache_id
,
59 struct keybox
*keybox
=
60 ralloc_size(mem_ctx
, sizeof(struct keybox
) + key_size
);
62 keybox
->cache_id
= cache_id
;
63 keybox
->size
= key_size
;
64 memcpy(keybox
->data
, key
, key_size
);
70 keybox_hash(const void *void_key
)
72 const struct keybox
*key
= void_key
;
73 return _mesa_hash_data(&key
->cache_id
, key
->size
+ sizeof(key
->cache_id
));
77 keybox_equals(const void *void_a
, const void *void_b
)
79 const struct keybox
*a
= void_a
, *b
= void_b
;
80 if (a
->size
!= b
->size
)
83 return memcmp(a
->data
, b
->data
, a
->size
) == 0;
87 get_program_string_id(enum iris_program_cache_id cache_id
, const void *key
)
91 return ((struct brw_vs_prog_key
*) key
)->program_string_id
;
93 return ((struct brw_tcs_prog_key
*) key
)->program_string_id
;
95 return ((struct brw_tes_prog_key
*) key
)->program_string_id
;
97 return ((struct brw_gs_prog_key
*) key
)->program_string_id
;
99 return ((struct brw_cs_prog_key
*) key
)->program_string_id
;
101 return ((struct brw_wm_prog_key
*) key
)->program_string_id
;
103 unreachable("no program string id for this kind of program");
107 struct iris_compiled_shader
*
108 iris_find_cached_shader(struct iris_context
*ice
,
109 enum iris_program_cache_id cache_id
,
113 struct keybox
*keybox
=
114 make_keybox(ice
->shaders
.cache
, cache_id
, key
, key_size
);
115 struct hash_entry
*entry
=
116 _mesa_hash_table_search(ice
->shaders
.cache
, keybox
);
120 return entry
? entry
->data
: NULL
;
124 iris_find_previous_compile(const struct iris_context
*ice
,
125 enum iris_program_cache_id cache_id
,
126 unsigned program_string_id
)
128 hash_table_foreach(ice
->shaders
.cache
, entry
) {
129 const struct keybox
*keybox
= entry
->key
;
130 if (keybox
->cache_id
== cache_id
&&
131 get_program_string_id(cache_id
, keybox
->data
) == program_string_id
) {
140 * Look for an existing entry in the cache that has identical assembly code.
142 * This is useful for programs generating shaders at runtime, where multiple
143 * distinct shaders (from an API perspective) may compile to the same assembly
144 * in our backend. This saves space in the program cache buffer.
146 static const struct iris_compiled_shader
*
147 find_existing_assembly(struct hash_table
*cache
,
148 const void *assembly
,
149 unsigned assembly_size
)
151 hash_table_foreach(cache
, entry
) {
152 const struct iris_compiled_shader
*existing
= entry
->data
;
153 if (existing
->prog_data
->program_size
== assembly_size
&&
154 memcmp(existing
->map
, assembly
, assembly_size
) == 0)
160 struct iris_compiled_shader
*
161 iris_upload_shader(struct iris_context
*ice
,
162 enum iris_program_cache_id cache_id
,
165 const void *assembly
,
166 struct brw_stage_prog_data
*prog_data
,
168 enum brw_param_builtin
*system_values
,
169 unsigned num_system_values
,
172 struct hash_table
*cache
= ice
->shaders
.cache
;
173 struct iris_compiled_shader
*shader
=
174 rzalloc_size(cache
, sizeof(struct iris_compiled_shader
) +
175 ice
->vtbl
.derived_program_state_size(cache_id
));
176 const struct iris_compiled_shader
*existing
=
177 find_existing_assembly(cache
, assembly
, prog_data
->program_size
);
179 /* If we can find a matching prog in the cache already, then reuse the
180 * existing stuff without creating new copy into the underlying buffer
181 * object. This is notably useful for programs generating shaders at
182 * runtime, where multiple shaders may compile to the same thing in our
186 pipe_resource_reference(&shader
->assembly
.res
, existing
->assembly
.res
);
187 shader
->assembly
.offset
= existing
->assembly
.offset
;
188 shader
->map
= existing
->map
;
190 shader
->assembly
.res
= NULL
;
191 u_upload_alloc(ice
->shaders
.uploader
, 0, prog_data
->program_size
, 64,
192 &shader
->assembly
.offset
, &shader
->assembly
.res
,
194 memcpy(shader
->map
, assembly
, prog_data
->program_size
);
197 shader
->prog_data
= prog_data
;
198 shader
->streamout
= streamout
;
199 shader
->system_values
= system_values
;
200 shader
->num_system_values
= num_system_values
;
201 shader
->num_cbufs
= num_cbufs
;
203 ralloc_steal(shader
, shader
->prog_data
);
204 ralloc_steal(shader
->prog_data
, prog_data
->param
);
205 ralloc_steal(shader
->prog_data
, prog_data
->pull_param
);
206 ralloc_steal(shader
, shader
->streamout
);
207 ralloc_steal(shader
, shader
->system_values
);
209 /* Store the 3DSTATE shader packets and other derived state. */
210 ice
->vtbl
.store_derived_program_state(ice
, cache_id
, shader
);
212 struct keybox
*keybox
= make_keybox(cache
, cache_id
, key
, key_size
);
213 _mesa_hash_table_insert(ice
->shaders
.cache
, keybox
, shader
);
219 iris_blorp_lookup_shader(struct blorp_batch
*blorp_batch
,
220 const void *key
, uint32_t key_size
,
221 uint32_t *kernel_out
, void *prog_data_out
)
223 struct blorp_context
*blorp
= blorp_batch
->blorp
;
224 struct iris_context
*ice
= blorp
->driver_ctx
;
225 struct iris_batch
*batch
= blorp_batch
->driver_batch
;
226 struct iris_compiled_shader
*shader
=
227 iris_find_cached_shader(ice
, IRIS_CACHE_BLORP
, key_size
, key
);
232 struct iris_bo
*bo
= iris_resource_bo(shader
->assembly
.res
);
234 iris_bo_offset_from_base_address(bo
) + shader
->assembly
.offset
;
235 *((void **) prog_data_out
) = shader
->prog_data
;
237 iris_use_pinned_bo(batch
, bo
, false);
243 iris_blorp_upload_shader(struct blorp_batch
*blorp_batch
,
244 const void *key
, uint32_t key_size
,
245 const void *kernel
, UNUSED
uint32_t kernel_size
,
246 const struct brw_stage_prog_data
*prog_data_templ
,
247 UNUSED
uint32_t prog_data_size
,
248 uint32_t *kernel_out
, void *prog_data_out
)
250 struct blorp_context
*blorp
= blorp_batch
->blorp
;
251 struct iris_context
*ice
= blorp
->driver_ctx
;
252 struct iris_batch
*batch
= blorp_batch
->driver_batch
;
254 void *prog_data
= ralloc_size(NULL
, prog_data_size
);
255 memcpy(prog_data
, prog_data_templ
, prog_data_size
);
257 struct iris_compiled_shader
*shader
=
258 iris_upload_shader(ice
, IRIS_CACHE_BLORP
, key_size
, key
, kernel
,
259 prog_data
, NULL
, NULL
, 0, 0);
261 struct iris_bo
*bo
= iris_resource_bo(shader
->assembly
.res
);
263 iris_bo_offset_from_base_address(bo
) + shader
->assembly
.offset
;
264 *((void **) prog_data_out
) = shader
->prog_data
;
266 iris_use_pinned_bo(batch
, bo
, false);
272 iris_init_program_cache(struct iris_context
*ice
)
275 _mesa_hash_table_create(ice
, keybox_hash
, keybox_equals
);
277 ice
->shaders
.uploader
=
278 u_upload_create(&ice
->ctx
, 16384, PIPE_BIND_CUSTOM
, PIPE_USAGE_IMMUTABLE
,
279 IRIS_RESOURCE_FLAG_SHADER_MEMZONE
);
283 iris_destroy_program_cache(struct iris_context
*ice
)
285 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
286 ice
->shaders
.prog
[i
] = NULL
;
289 hash_table_foreach(ice
->shaders
.cache
, entry
) {
290 struct iris_compiled_shader
*shader
= entry
->data
;
291 pipe_resource_reference(&shader
->assembly
.res
, NULL
);
294 u_upload_destroy(ice
->shaders
.uploader
);
296 ralloc_free(ice
->shaders
.cache
);
300 cache_name(enum iris_program_cache_id cache_id
)
302 if (cache_id
== IRIS_CACHE_BLORP
)
305 return _mesa_shader_stage_to_string(cache_id
);
309 iris_print_program_cache(struct iris_context
*ice
)
311 struct iris_screen
*screen
= (struct iris_screen
*)ice
->ctx
.screen
;
312 const struct gen_device_info
*devinfo
= &screen
->devinfo
;
314 hash_table_foreach(ice
->shaders
.cache
, entry
) {
315 const struct keybox
*keybox
= entry
->key
;
316 struct iris_compiled_shader
*shader
= entry
->data
;
317 fprintf(stderr
, "%s:\n", cache_name(keybox
->cache_id
));
318 brw_disassemble(devinfo
, shader
->map
, 0,
319 shader
->prog_data
->program_size
, stderr
);