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/*
* Copyright © 2020 Google, Inc.
* Copyright (c) 2020 Etnaviv Project
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sub license,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Christian Gmeiner <christian.gmeiner@gmail.com>
*/
#include "etnaviv_debug.h"
#include "etnaviv_disk_cache.h"
#include "nir_serialize.h"
#define debug 0
void
etna_disk_cache_init(struct etna_compiler *compiler, const char *renderer)
{
if (!(etna_mesa_debug & ETNA_DBG_NIR))
return;
if (etna_mesa_debug & ETNA_DBG_NOCACHE)
return;
const struct build_id_note *note =
build_id_find_nhdr_for_addr(etna_disk_cache_init);
assert(note && build_id_length(note) == 20); /* sha1 */
const uint8_t *id_sha1 = build_id_data(note);
assert(id_sha1);
char timestamp[41];
_mesa_sha1_format(timestamp, id_sha1);
compiler->disk_cache = disk_cache_create(renderer, timestamp, etna_mesa_debug);
}
void
etna_disk_cache_init_shader_key(struct etna_compiler *compiler, struct etna_shader *shader)
{
if (!compiler->disk_cache)
return;
struct mesa_sha1 ctx;
_mesa_sha1_init(&ctx);
/* Serialize the NIR to a binary blob that we can hash for the disk
* cache. Drop unnecessary information (like variable names)
* so the serialized NIR is smaller, and also to let us detect more
* isomorphic shaders when hashing, increasing cache hits.
*/
struct blob blob;
blob_init(&blob);
nir_serialize(&blob, shader->nir, true);
_mesa_sha1_update(&ctx, blob.data, blob.size);
blob_finish(&blob);
_mesa_sha1_final(&ctx, shader->cache_key);
}
static void
compute_variant_key(struct etna_compiler *compiler, struct etna_shader_variant *v,
cache_key cache_key)
{
struct blob blob;
blob_init(&blob);
blob_write_bytes(&blob, &v->shader->cache_key, sizeof(v->shader->cache_key));
blob_write_bytes(&blob, &v->key, sizeof(v->key));
disk_cache_compute_key(compiler->disk_cache, blob.data, blob.size, cache_key);
blob_finish(&blob);
}
static void
retrieve_variant(struct blob_reader *blob, struct etna_shader_variant *v)
{
blob_copy_bytes(blob, VARIANT_CACHE_PTR(v), VARIANT_CACHE_SIZE);
v->code = malloc(4 * v->code_size);
blob_copy_bytes(blob, v->code, 4 * v->code_size);
blob_copy_bytes(blob, &v->uniforms.imm_count, sizeof(v->uniforms.imm_count));
v->uniforms.imm_contents = malloc(v->uniforms.imm_count * sizeof(v->uniforms.imm_contents));
v->uniforms.imm_data = malloc(v->uniforms.imm_count * sizeof(v->uniforms.imm_data));
blob_copy_bytes(blob, v->uniforms.imm_contents, v->uniforms.imm_count * sizeof(v->uniforms.imm_contents));
blob_copy_bytes(blob, v->uniforms.imm_data, v->uniforms.imm_count * sizeof(v->uniforms.imm_data));
}
static void
store_variant(struct blob *blob, const struct etna_shader_variant *v)
{
const uint32_t imm_count = v->uniforms.imm_count;
blob_write_bytes(blob, VARIANT_CACHE_PTR(v), VARIANT_CACHE_SIZE);
blob_write_bytes(blob, v->code, 4 * v->code_size);
blob_write_bytes(blob, &v->uniforms.imm_count, sizeof(v->uniforms.imm_count));
blob_write_bytes(blob, v->uniforms.imm_contents, imm_count * sizeof(v->uniforms.imm_contents));
blob_write_bytes(blob, v->uniforms.imm_data, imm_count * sizeof(v->uniforms.imm_data));
}
bool
etna_disk_cache_retrieve(struct etna_compiler *compiler, struct etna_shader_variant *v)
{
if (!compiler->disk_cache)
return false;
cache_key cache_key;
compute_variant_key(compiler, v, cache_key);
if (debug) {
char sha1[41];
_mesa_sha1_format(sha1, cache_key);
fprintf(stderr, "[mesa disk cache] retrieving variant %s: ", sha1);
}
size_t size;
void *buffer = disk_cache_get(compiler->disk_cache, cache_key, &size);
if (debug)
fprintf(stderr, "%s\n", buffer ? "found" : "missing");
if (!buffer)
return false;
struct blob_reader blob;
blob_reader_init(&blob, buffer, size);
retrieve_variant(&blob, v);
free(buffer);
return true;
}
void
etna_disk_cache_store(struct etna_compiler *compiler, struct etna_shader_variant *v)
{
if (!compiler->disk_cache)
return;
cache_key cache_key;
compute_variant_key(compiler, v, cache_key);
if (debug) {
char sha1[41];
_mesa_sha1_format(sha1, cache_key);
fprintf(stderr, "[mesa disk cache] storing variant %s\n", sha1);
}
struct blob blob;
blob_init(&blob);
store_variant(&blob, v);
disk_cache_put(compiler->disk_cache, cache_key, blob.data, blob.size, NULL);
blob_finish(&blob);
}
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