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intel: use a shared UUID with other drivers

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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>
This commit is contained in:
Lionel Landwerlin 2022-12-21 19:22:46 +02:00
parent 53de48f1c4
commit f9115b6d51
1 changed files with 36 additions and 27 deletions
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63
src/intel/common/intel_uuid.c
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@ -30,34 +30,43 @@ intel_uuid_compute_device_id(uint8_t *uuid,
const struct intel_device_info *devinfo,
size_t size)
{
struct mesa_sha1 sha1_ctx;
uint8_t sha1[20];
const char *vendor = "INTEL";
assert(size <= sizeof(sha1));
/* The device UUID uniquely identifies the given device within the
* machine. We use the device information along with PCI information
* to make sure we have different UUIDs on a system with multiple
* identical (discrete) GPUs.
/* The device UUID uniquely identifies the given device within the machine.
* We use the device information along with PCI information to make sure we
* have different UUIDs on a system with multiple identical (discrete)
* GPUs.
*/
_mesa_sha1_init(&sha1_ctx);
_mesa_sha1_update(&sha1_ctx, &devinfo->pci_domain,
sizeof(devinfo->pci_domain));
_mesa_sha1_update(&sha1_ctx, &devinfo->pci_bus,
sizeof(devinfo->pci_bus));
_mesa_sha1_update(&sha1_ctx, &devinfo->pci_dev,
sizeof(devinfo->pci_dev));
_mesa_sha1_update(&sha1_ctx, &devinfo->pci_func,
sizeof(devinfo->pci_func));
_mesa_sha1_update(&sha1_ctx, vendor, strlen(vendor));
_mesa_sha1_update(&sha1_ctx, &devinfo->pci_device_id,
sizeof(devinfo->pci_device_id));
_mesa_sha1_update(&sha1_ctx, &devinfo->pci_revision_id,
sizeof(devinfo->pci_revision_id));
_mesa_sha1_update(&sha1_ctx, &devinfo->revision,
sizeof(devinfo->revision));
_mesa_sha1_final(&sha1_ctx, sha1);
memcpy(uuid, sha1, size);
/* We want to have UUID matching between the different drivers (outside the
* Mesa project). This structure has been agreed with the various drivers
* to be the generated UUID.
*
* Consult other drivers before changing this.
*/
struct device_uuid {
uint16_t vendor_id;
uint16_t device_id;
uint16_t revision_id;
uint16_t pci_domain;
uint8_t pci_bus;
uint8_t pci_dev;
uint8_t pci_func;
uint8_t padding[4];
uint8_t sub_device_id; /* Tile number */
} shared_uuid = {
.vendor_id = 0x8086,
.device_id = devinfo->pci_device_id,
.revision_id = devinfo->pci_revision_id,
.pci_domain = devinfo->pci_domain,
.pci_bus = devinfo->pci_bus,
.pci_dev = devinfo->pci_dev,
.pci_func = devinfo->pci_func,
};
/* All the users have a 16byte UUID */
assert(size == 16);
assert(sizeof(shared_uuid) == 16);
memcpy(uuid, &shared_uuid, size);
}
void