mirror of https://gitlab.freedesktop.org/mesa/mesa
95 lines
3.4 KiB
C
95 lines
3.4 KiB
C
/*
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* Copyright © 2020 Igalia S.L.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "freedreno_dev_info.h"
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#include "freedreno_uuid.h"
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include "util/mesa-sha1.h"
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#include "git_sha1.h"
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/* (Re)define UUID_SIZE to avoid including vulkan.h (or p_defines.h) here. */
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#define UUID_SIZE 16
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void
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fd_get_driver_uuid(void *uuid)
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{
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const char *driver_id = PACKAGE_VERSION MESA_GIT_SHA1;
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/* The driver UUID is used for determining sharability of images and memory
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* between two Vulkan instances in separate processes, but also to
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* determining memory objects and sharability between Vulkan and OpenGL
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* driver. People who want to share memory need to also check the device
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* UUID.
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*/
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struct mesa_sha1 sha1_ctx;
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_mesa_sha1_init(&sha1_ctx);
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_mesa_sha1_update(&sha1_ctx, driver_id, strlen(driver_id));
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uint8_t sha1[SHA1_DIGEST_LENGTH];
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_mesa_sha1_final(&sha1_ctx, sha1);
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assert(SHA1_DIGEST_LENGTH >= UUID_SIZE);
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memcpy(uuid, sha1, UUID_SIZE);
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}
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void
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fd_get_device_uuid(void *uuid, const struct fd_dev_id *id)
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{
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struct mesa_sha1 sha1_ctx;
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_mesa_sha1_init(&sha1_ctx);
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/* The device UUID uniquely identifies the given device within the machine.
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* Since we never have more than one device, this doesn't need to be a real
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* UUID, so we use SHA1("freedreno" + gpu_id).
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*
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* @TODO: Using the GPU id could be too restrictive on the off-chance that
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* someone would like to use this UUID to cache pre-tiled images or something
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* of the like, and use them across devices. In the future, we could allow
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* that by:
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* * Being a bit loose about GPU id and hash only the generation's
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* 'major' number (e.g, '6' instead of '630').
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*
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* * Include HW specific constants that are relevant for layout resolving,
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* like minimum width to enable UBWC, tile_align_w, etc.
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*
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* This would allow cached device memory to be safely used from HW in
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* (slightly) different revisions of the same generation.
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*/
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static const char *device_name = "freedreno";
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_mesa_sha1_update(&sha1_ctx, device_name, strlen(device_name));
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_mesa_sha1_update(&sha1_ctx, id, sizeof(*id));
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uint8_t sha1[SHA1_DIGEST_LENGTH];
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_mesa_sha1_final(&sha1_ctx, sha1);
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assert(SHA1_DIGEST_LENGTH >= UUID_SIZE);
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memcpy(uuid, sha1, UUID_SIZE);
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}
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