2 * Copyright © 2017 Intel Corporation
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5 * copy of this software and associated documentation files (the "Software"),
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9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included
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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;
86 struct iris_compiled_shader
*
87 iris_find_cached_shader(struct iris_context
*ice
,
88 enum iris_program_cache_id cache_id
,
92 struct keybox
*keybox
= make_keybox(NULL
, cache_id
, key
, key_size
);
93 struct hash_entry
*entry
=
94 _mesa_hash_table_search(ice
->shaders
.cache
, keybox
);
98 return entry
? entry
->data
: NULL
;
102 iris_find_previous_compile(const struct iris_context
*ice
,
103 enum iris_program_cache_id cache_id
,
104 unsigned program_string_id
)
106 hash_table_foreach(ice
->shaders
.cache
, entry
) {
107 const struct keybox
*keybox
= entry
->key
;
108 const struct brw_base_prog_key
*key
= (const void *)keybox
->data
;
109 if (keybox
->cache_id
== cache_id
&&
110 key
->program_string_id
== program_string_id
) {
119 * Look for an existing entry in the cache that has identical assembly code.
121 * This is useful for programs generating shaders at runtime, where multiple
122 * distinct shaders (from an API perspective) may compile to the same assembly
123 * in our backend. This saves space in the program cache buffer.
125 static const struct iris_compiled_shader
*
126 find_existing_assembly(struct hash_table
*cache
,
127 const void *assembly
,
128 unsigned assembly_size
)
130 hash_table_foreach(cache
, entry
) {
131 const struct iris_compiled_shader
*existing
= entry
->data
;
132 if (existing
->prog_data
->program_size
== assembly_size
&&
133 memcmp(existing
->map
, assembly
, assembly_size
) == 0)
139 struct iris_compiled_shader
*
140 iris_upload_shader(struct iris_context
*ice
,
141 enum iris_program_cache_id cache_id
,
144 const void *assembly
,
145 struct brw_stage_prog_data
*prog_data
,
147 enum brw_param_builtin
*system_values
,
148 unsigned num_system_values
,
150 const struct iris_binding_table
*bt
)
152 struct hash_table
*cache
= ice
->shaders
.cache
;
153 struct iris_screen
*screen
= (struct iris_screen
*)ice
->ctx
.screen
;
154 struct iris_compiled_shader
*shader
=
155 rzalloc_size(cache
, sizeof(struct iris_compiled_shader
) +
156 screen
->vtbl
.derived_program_state_size(cache_id
));
157 const struct iris_compiled_shader
*existing
=
158 find_existing_assembly(cache
, assembly
, prog_data
->program_size
);
160 /* If we can find a matching prog in the cache already, then reuse the
161 * existing stuff without creating new copy into the underlying buffer
162 * object. This is notably useful for programs generating shaders at
163 * runtime, where multiple shaders may compile to the same thing in our
167 pipe_resource_reference(&shader
->assembly
.res
, existing
->assembly
.res
);
168 shader
->assembly
.offset
= existing
->assembly
.offset
;
169 shader
->map
= existing
->map
;
171 shader
->assembly
.res
= NULL
;
172 u_upload_alloc(ice
->shaders
.uploader
, 0, prog_data
->program_size
, 64,
173 &shader
->assembly
.offset
, &shader
->assembly
.res
,
175 memcpy(shader
->map
, assembly
, prog_data
->program_size
);
178 shader
->prog_data
= prog_data
;
179 shader
->streamout
= streamout
;
180 shader
->system_values
= system_values
;
181 shader
->num_system_values
= num_system_values
;
182 shader
->num_cbufs
= num_cbufs
;
185 ralloc_steal(shader
, shader
->prog_data
);
186 ralloc_steal(shader
->prog_data
, prog_data
->param
);
187 ralloc_steal(shader
->prog_data
, prog_data
->pull_param
);
188 ralloc_steal(shader
, shader
->streamout
);
189 ralloc_steal(shader
, shader
->system_values
);
191 /* Store the 3DSTATE shader packets and other derived state. */
192 screen
->vtbl
.store_derived_program_state(ice
, cache_id
, shader
);
194 struct keybox
*keybox
= make_keybox(shader
, cache_id
, key
, key_size
);
195 _mesa_hash_table_insert(ice
->shaders
.cache
, keybox
, shader
);
201 iris_blorp_lookup_shader(struct blorp_batch
*blorp_batch
,
202 const void *key
, uint32_t key_size
,
203 uint32_t *kernel_out
, void *prog_data_out
)
205 struct blorp_context
*blorp
= blorp_batch
->blorp
;
206 struct iris_context
*ice
= blorp
->driver_ctx
;
207 struct iris_batch
*batch
= blorp_batch
->driver_batch
;
208 struct iris_compiled_shader
*shader
=
209 iris_find_cached_shader(ice
, IRIS_CACHE_BLORP
, key_size
, key
);
214 struct iris_bo
*bo
= iris_resource_bo(shader
->assembly
.res
);
216 iris_bo_offset_from_base_address(bo
) + shader
->assembly
.offset
;
217 *((void **) prog_data_out
) = shader
->prog_data
;
219 iris_use_pinned_bo(batch
, bo
, false);
225 iris_blorp_upload_shader(struct blorp_batch
*blorp_batch
, uint32_t stage
,
226 const void *key
, uint32_t key_size
,
227 const void *kernel
, UNUSED
uint32_t kernel_size
,
228 const struct brw_stage_prog_data
*prog_data_templ
,
229 UNUSED
uint32_t prog_data_size
,
230 uint32_t *kernel_out
, void *prog_data_out
)
232 struct blorp_context
*blorp
= blorp_batch
->blorp
;
233 struct iris_context
*ice
= blorp
->driver_ctx
;
234 struct iris_batch
*batch
= blorp_batch
->driver_batch
;
236 void *prog_data
= ralloc_size(NULL
, prog_data_size
);
237 memcpy(prog_data
, prog_data_templ
, prog_data_size
);
239 struct iris_binding_table bt
;
240 memset(&bt
, 0, sizeof(bt
));
242 struct iris_compiled_shader
*shader
=
243 iris_upload_shader(ice
, IRIS_CACHE_BLORP
, key_size
, key
, kernel
,
244 prog_data
, NULL
, NULL
, 0, 0, &bt
);
246 struct iris_bo
*bo
= iris_resource_bo(shader
->assembly
.res
);
248 iris_bo_offset_from_base_address(bo
) + shader
->assembly
.offset
;
249 *((void **) prog_data_out
) = shader
->prog_data
;
251 iris_use_pinned_bo(batch
, bo
, false);
257 iris_init_program_cache(struct iris_context
*ice
)
260 _mesa_hash_table_create(ice
, keybox_hash
, keybox_equals
);
262 ice
->shaders
.uploader
=
263 u_upload_create(&ice
->ctx
, 16384, PIPE_BIND_CUSTOM
, PIPE_USAGE_IMMUTABLE
,
264 IRIS_RESOURCE_FLAG_SHADER_MEMZONE
);
268 iris_destroy_program_cache(struct iris_context
*ice
)
270 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
271 ice
->shaders
.prog
[i
] = NULL
;
274 hash_table_foreach(ice
->shaders
.cache
, entry
) {
275 struct iris_compiled_shader
*shader
= entry
->data
;
276 pipe_resource_reference(&shader
->assembly
.res
, NULL
);
279 u_upload_destroy(ice
->shaders
.uploader
);
281 ralloc_free(ice
->shaders
.cache
);
285 cache_name(enum iris_program_cache_id cache_id
)
287 if (cache_id
== IRIS_CACHE_BLORP
)
290 return _mesa_shader_stage_to_string(cache_id
);
294 iris_print_program_cache(struct iris_context
*ice
)
296 struct iris_screen
*screen
= (struct iris_screen
*)ice
->ctx
.screen
;
297 const struct gen_device_info
*devinfo
= &screen
->devinfo
;
299 hash_table_foreach(ice
->shaders
.cache
, entry
) {
300 const struct keybox
*keybox
= entry
->key
;
301 struct iris_compiled_shader
*shader
= entry
->data
;
302 fprintf(stderr
, "%s:\n", cache_name(keybox
->cache_id
));
303 brw_disassemble(devinfo
, shader
->map
, 0,
304 shader
->prog_data
->program_size
, stderr
);