1 /*
2 * Copyright © 2020 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #include "intel_uuid.h"
25 #include "git_sha1.h"
26 #include "util/mesa-sha1.h"
27
28 void
intel_uuid_compute_device_id(uint8_t * uuid,const struct intel_device_info * devinfo,size_t size)29 intel_uuid_compute_device_id(uint8_t *uuid,
30 const struct intel_device_info *devinfo,
31 size_t size)
32 {
33 struct mesa_sha1 sha1_ctx;
34 uint8_t sha1[20];
35 const char *vendor = "INTEL";
36 assert(size <= sizeof(sha1));
37
38 /* The device UUID uniquely identifies the given device within the
39 * machine. We use the device information along with PCI information
40 * to make sure we have different UUIDs on a system with multiple
41 * identical (discrete) GPUs.
42 */
43 _mesa_sha1_init(&sha1_ctx);
44 _mesa_sha1_update(&sha1_ctx, &devinfo->pci_domain,
45 sizeof(devinfo->pci_domain));
46 _mesa_sha1_update(&sha1_ctx, &devinfo->pci_bus,
47 sizeof(devinfo->pci_bus));
48 _mesa_sha1_update(&sha1_ctx, &devinfo->pci_dev,
49 sizeof(devinfo->pci_dev));
50 _mesa_sha1_update(&sha1_ctx, &devinfo->pci_func,
51 sizeof(devinfo->pci_func));
52 _mesa_sha1_update(&sha1_ctx, vendor, strlen(vendor));
53 _mesa_sha1_update(&sha1_ctx, &devinfo->pci_device_id,
54 sizeof(devinfo->pci_device_id));
55 _mesa_sha1_update(&sha1_ctx, &devinfo->pci_revision_id,
56 sizeof(devinfo->pci_revision_id));
57 _mesa_sha1_update(&sha1_ctx, &devinfo->revision,
58 sizeof(devinfo->revision));
59 _mesa_sha1_final(&sha1_ctx, sha1);
60 memcpy(uuid, sha1, size);
61 }
62
63 void
intel_uuid_compute_driver_id(uint8_t * uuid,const struct intel_device_info * devinfo,size_t size)64 intel_uuid_compute_driver_id(uint8_t *uuid,
65 const struct intel_device_info *devinfo,
66 size_t size)
67 {
68 const char* intelDriver = PACKAGE_VERSION MESA_GIT_SHA1;
69 struct mesa_sha1 sha1_ctx;
70 uint8_t sha1[20];
71
72 assert(size <= sizeof(sha1));
73
74 /* The driver UUID is used for determining sharability of images and memory
75 * between two Vulkan instances in separate processes, but also to
76 * determining memory objects and sharability between Vulkan and OpenGL
77 * driver. People who want to share memory need to also check the device
78 * UUID.
79 */
80 _mesa_sha1_init(&sha1_ctx);
81 _mesa_sha1_update(&sha1_ctx, intelDriver, strlen(intelDriver));
82 _mesa_sha1_update(&sha1_ctx, &devinfo->has_bit6_swizzle,
83 sizeof(devinfo->has_bit6_swizzle));
84 _mesa_sha1_final(&sha1_ctx, sha1);
85 memcpy(uuid, sha1, size);
86 }
87