diff options
| author | Kent Russell <kent.russell@amd.com> | 2019-05-15 08:35:29 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-05-24 12:25:32 -0500 |
| commit | fb2dbfd2427e82ae63742f667cda19f1af6b77c2 (patch) | |
| tree | 21fdc009cce43601cf7a582d0dbb82aa4a68b8d5 /drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c | |
| parent | 460960587ae80802c76384b0580ed9c89e6e4bb7 (diff) | |
drm/amdgpu: Add Unique Identifier sysfs file unique_id v2
Add a file that provides a Unique ID for the GPU.
This will persist across machines and is guaranteed to be unique.
This is only available for GFX9 and newer, so older ASICs will not
have this file in the sysfs pool
v2: Store it in adev for ASICs that don't have a hwmgr
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Kent Russell <kent.russell@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c index 9585ba51d853..ce6aeb5a0362 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c @@ -356,6 +356,7 @@ static void vega10_init_dpm_defaults(struct pp_hwmgr *hwmgr) struct vega10_hwmgr *data = hwmgr->backend; int i; uint32_t sub_vendor_id, hw_revision; + uint32_t top32, bottom32; struct amdgpu_device *adev = hwmgr->adev; vega10_initialize_power_tune_defaults(hwmgr); @@ -499,6 +500,14 @@ static void vega10_init_dpm_defaults(struct pp_hwmgr *hwmgr) (hw_revision == 0) && (sub_vendor_id != 0x1002)) data->smu_features[GNLD_PCC_LIMIT].supported = true; + + /* Get the SN to turn into a Unique ID */ + smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumTop32); + top32 = smum_get_argument(hwmgr); + smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumBottom32); + bottom32 = smum_get_argument(hwmgr); + + adev->unique_id = ((uint64_t)bottom32 << 32) | top32; } #ifdef PPLIB_VEGA10_EVV_SUPPORT |