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drm/amdgpu: Add helpers to set/get unique ids

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Add a struct to store unique id information for each type. Add helper
to fetch the unique id.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar
2025-08-04 13:13:06 +05:30
committed by Alex Deucher
parent 892bac995b
commit 589ea8a1fd
2 changed files with 91 additions and 0 deletions
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71
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@@ -2675,6 +2675,24 @@ out:
return err;
}
static void amdgpu_uid_init(struct amdgpu_device *adev)
{
/* Initialize the UID for the device */
adev->uid_info = kzalloc(sizeof(struct amdgpu_uid), GFP_KERNEL);
if (!adev->uid_info) {
dev_warn(adev->dev, "Failed to allocate memory for UID\n");
return;
}
adev->uid_info->adev = adev;
}
static void amdgpu_uid_fini(struct amdgpu_device *adev)
{
/* Free the UID memory */
kfree(adev->uid_info);
adev->uid_info = NULL;
}
/**
* amdgpu_device_ip_early_init - run early init for hardware IPs
*
@@ -2858,6 +2876,8 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
if (adev->gmc.xgmi.supported)
amdgpu_xgmi_early_init(adev);
if (amdgpu_is_multi_aid(adev))
amdgpu_uid_init(adev);
ip_block = amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_GFX);
if (ip_block->status.valid != false)
amdgpu_amdkfd_device_probe(adev);
@@ -3648,6 +3668,7 @@ static int amdgpu_device_ip_fini(struct amdgpu_device *adev)
}
amdgpu_ras_fini(adev);
amdgpu_uid_fini(adev);
return 0;
}
@@ -7486,3 +7507,53 @@ ssize_t amdgpu_show_reset_mask(char *buf, uint32_t supported_reset)
size += sysfs_emit_at(buf, size, "\n");
return size;
}
void amdgpu_device_set_uid(struct amdgpu_uid *uid_info,
enum amdgpu_uid_type type, uint8_t inst,
uint64_t uid)
{
if (!uid_info)
return;
if (type >= AMDGPU_UID_TYPE_MAX) {
dev_err_once(uid_info->adev->dev, "Invalid UID type %d\n",
type);
return;
}
if (inst >= AMDGPU_UID_INST_MAX) {
dev_err_once(uid_info->adev->dev, "Invalid UID instance %d\n",
inst);
return;
}
if (uid_info->uid[type][inst] != 0) {
dev_warn_once(
uid_info->adev->dev,
"Overwriting existing UID %llu for type %d instance %d\n",
uid_info->uid[type][inst], type, inst);
}
uid_info->uid[type][inst] = uid;
}
u64 amdgpu_device_get_uid(struct amdgpu_uid *uid_info,
enum amdgpu_uid_type type, uint8_t inst)
{
if (!uid_info)
return 0;
if (type >= AMDGPU_UID_TYPE_MAX) {
dev_err_once(uid_info->adev->dev, "Invalid UID type %d\n",
type);
return 0;
}
if (inst >= AMDGPU_UID_INST_MAX) {
dev_err_once(uid_info->adev->dev, "Invalid UID instance %d\n",
inst);
return 0;
}
return uid_info->uid[type][inst];
}