On 1/28/2022 4:13 PM, Lang Yu wrote:
We observed a GPU hang when querying GMC CG state(i.e., cat amdgpu_pm_info) on cyan skillfish. Acctually, cyan skillfish doesn't support any CG features. Just prevent cyan skillfish from accessing GMC CG registers. Signed-off-by: Lang Yu <lang...@amd.com>
Reviewed-by: Lijo Lazar <lijo.la...@amd.com> Thanks, Lijo
--- drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c index 73ab0eebe4e2..bddaf2417344 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c @@ -1156,6 +1156,9 @@ static void gmc_v10_0_get_clockgating_state(void *handle, u32 *flags) { struct amdgpu_device *adev = (struct amdgpu_device *)handle;+ if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(10, 1, 3))+ return; + adev->mmhub.funcs->get_clockgating(adev, flags);if (adev->ip_versions[ATHUB_HWIP][0] >= IP_VERSION(2, 1, 0))
