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f9115b6d51
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by: Tapani Pälli <tapani.palli@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20408>
95 lines
3.5 KiB
C
95 lines
3.5 KiB
C
/*
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* Copyright © 2020 Intel Corporation
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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
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "intel_uuid.h"
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#include "git_sha1.h"
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#include "util/mesa-sha1.h"
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void
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intel_uuid_compute_device_id(uint8_t *uuid,
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const struct intel_device_info *devinfo,
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size_t size)
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{
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/* The device UUID uniquely identifies the given device within the machine.
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* We use the device information along with PCI information to make sure we
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* have different UUIDs on a system with multiple identical (discrete)
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* GPUs.
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*/
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/* We want to have UUID matching between the different drivers (outside the
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* Mesa project). This structure has been agreed with the various drivers
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* to be the generated UUID.
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*
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* Consult other drivers before changing this.
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*/
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struct device_uuid {
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uint16_t vendor_id;
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uint16_t device_id;
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uint16_t revision_id;
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uint16_t pci_domain;
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uint8_t pci_bus;
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uint8_t pci_dev;
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uint8_t pci_func;
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uint8_t padding[4];
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uint8_t sub_device_id; /* Tile number */
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} shared_uuid = {
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.vendor_id = 0x8086,
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.device_id = devinfo->pci_device_id,
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.revision_id = devinfo->pci_revision_id,
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.pci_domain = devinfo->pci_domain,
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.pci_bus = devinfo->pci_bus,
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.pci_dev = devinfo->pci_dev,
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.pci_func = devinfo->pci_func,
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};
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/* All the users have a 16byte UUID */
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assert(size == 16);
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assert(sizeof(shared_uuid) == 16);
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memcpy(uuid, &shared_uuid, size);
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}
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void
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intel_uuid_compute_driver_id(uint8_t *uuid,
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const struct intel_device_info *devinfo,
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size_t size)
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{
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const char* intelDriver = PACKAGE_VERSION MESA_GIT_SHA1;
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struct mesa_sha1 sha1_ctx;
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uint8_t sha1[20];
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assert(size <= sizeof(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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_mesa_sha1_init(&sha1_ctx);
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_mesa_sha1_update(&sha1_ctx, intelDriver, strlen(intelDriver));
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_mesa_sha1_update(&sha1_ctx, &devinfo->has_bit6_swizzle,
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sizeof(devinfo->has_bit6_swizzle));
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_mesa_sha1_final(&sha1_ctx, sha1);
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memcpy(uuid, sha1, size);
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}
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