drm/amdgpu: resume kiq access debugfs

If there is no GPU hang, user still can access
debugfs through kiq.
Signed-off-by: Yintian Tao <yttao@amd.com>
Reviewed-by: Monk Liu <Monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c

@@ -335,17 +335,23 @@ void amdgpu_detect_virtualization(struct amdgpu_device *adev)
 	}
 }
 
-bool amdgpu_virt_can_access_debugfs(struct amdgpu_device *adev)
+bool amdgpu_virt_access_debugfs_is_mmio(struct amdgpu_device *adev)
 {
 	return amdgpu_sriov_is_debug(adev) ? true : false;
 }
 
+bool amdgpu_virt_access_debugfs_is_kiq(struct amdgpu_device *adev)
+{
+	return amdgpu_sriov_is_normal(adev) ? true : false;
+}
+
 int amdgpu_virt_enable_access_debugfs(struct amdgpu_device *adev)
 {
-	if (!amdgpu_sriov_vf(adev))
+	if (!amdgpu_sriov_vf(adev) ||
+	    amdgpu_virt_access_debugfs_is_kiq(adev))
 		return 0;
 
-	if (amdgpu_virt_can_access_debugfs(adev))
+	if (amdgpu_virt_access_debugfs_is_mmio(adev))
 		adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
 	else
 		return -EPERM;

drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h

@@ -299,6 +299,8 @@ static inline bool is_virtual_machine(void)
 	((adev)->virt.gim_feature & AMDGIM_FEATURE_PP_ONE_VF)
 #define amdgpu_sriov_is_debug(adev) \
 	((!adev->in_gpu_reset) && adev->virt.tdr_debug)
+#define amdgpu_sriov_is_normal(adev) \
+	((!adev->in_gpu_reset) && (!adev->virt.tdr_debug))
 
 bool amdgpu_virt_mmio_blocked(struct amdgpu_device *adev);
 void amdgpu_virt_init_setting(struct amdgpu_device *adev);