drm/amdgpu: fix reboot failure issue for virtualization

Reboot process will call HW fini functions of IP blocks. For virt,
need to send event three before hw fini and send event four after
hw fini.

Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index b408a54..786c3c3 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1565,6 +1565,9 @@ int amdgpu_suspend(struct amdgpu_device *adev)
 {
        int i, r;
 
+       if (amdgpu_sriov_vf(adev))
+               amdgpu_virt_request_full_gpu(adev, false);
+
        /* ungate SMC block first */
        r = amdgpu_set_clockgating_state(adev, AMD_IP_BLOCK_TYPE_SMC,
                                         AMD_CG_STATE_UNGATE);
@@ -1593,6 +1596,9 @@ int amdgpu_suspend(struct amdgpu_device *adev)
                }
        }
 
+       if (amdgpu_sriov_vf(adev))
+               amdgpu_virt_release_full_gpu(adev, false);
+
        return 0;
 }