| /* |
| * Copyright © 2020 Igalia S.L. |
| * |
| * 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, sublicense, |
| * 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 NONINFRINGEMENT. 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. |
| */ |
| |
| #include "freedreno_uuid.h" |
| |
| #include <assert.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include "git_sha1.h" |
| #include "util/mesa-sha1.h" |
| |
| /* (Re)define UUID_SIZE to avoid including vulkan.h (or p_defines.h) here. */ |
| #define UUID_SIZE 16 |
| |
| void |
| fd_get_driver_uuid(void *uuid) |
| { |
| const char *driver_id = PACKAGE_VERSION MESA_GIT_SHA1; |
| |
| /* The driver UUID is used for determining sharability of images and memory |
| * between two Vulkan instances in separate processes, but also to |
| * determining memory objects and sharability between Vulkan and OpenGL |
| * driver. People who want to share memory need to also check the device |
| * UUID. |
| */ |
| struct mesa_sha1 sha1_ctx; |
| _mesa_sha1_init(&sha1_ctx); |
| |
| _mesa_sha1_update(&sha1_ctx, driver_id, strlen(driver_id)); |
| |
| uint8_t sha1[SHA1_DIGEST_LENGTH]; |
| _mesa_sha1_final(&sha1_ctx, sha1); |
| |
| assert(SHA1_DIGEST_LENGTH >= UUID_SIZE); |
| memcpy(uuid, sha1, UUID_SIZE); |
| } |
| |
| void |
| fd_get_device_uuid(void *uuid, unsigned gpu_id) |
| { |
| struct mesa_sha1 sha1_ctx; |
| _mesa_sha1_init(&sha1_ctx); |
| |
| /* The device UUID uniquely identifies the given device within the machine. |
| * Since we never have more than one device, this doesn't need to be a real |
| * UUID, so we use SHA1("freedreno" + gpu_id). |
| * |
| * @TODO: Using the GPU id could be too restrictive on the off-chance that |
| * someone would like to use this UUID to cache pre-tiled images or something |
| * of the like, and use them across devices. In the future, we could allow |
| * that by: |
| * * Being a bit loose about GPU id and hash only the generation's |
| * 'major' number (e.g, '6' instead of '630'). |
| * |
| * * Include HW specific constants that are relevant for layout resolving, |
| * like minimum width to enable UBWC, tile_align_w, etc. |
| * |
| * This would allow cached device memory to be safely used from HW in |
| * (slightly) different revisions of the same generation. |
| */ |
| |
| static const char *device_name = "freedreno"; |
| _mesa_sha1_update(&sha1_ctx, device_name, strlen(device_name)); |
| |
| _mesa_sha1_update(&sha1_ctx, &gpu_id, sizeof(gpu_id)); |
| |
| uint8_t sha1[SHA1_DIGEST_LENGTH]; |
| _mesa_sha1_final(&sha1_ctx, sha1); |
| |
| assert(SHA1_DIGEST_LENGTH >= UUID_SIZE); |
| memcpy(uuid, sha1, UUID_SIZE); |
| } |