drm/amdgpu: add skip_hw_access checks for sriov

[ Upstream commit b3948ad ]

Accessing registers via host is missing the check for skip_hw_access and
the lockdep check that comes with it.

Signed-off-by: Yunxiang Li <Yunxiang.Li@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: yunxiali

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

@@ -977,6 +977,9 @@ u32 amdgpu_virt_rlcg_reg_rw(struct amdgpu_device *adev, u32 offset, u32 v, u32 f
 		return 0;
 	}
 
+	if (amdgpu_device_skip_hw_access(adev))
+		return 0;
+
 	reg_access_ctrl = &adev->gfx.rlc.reg_access_ctrl[xcc_id];
 	scratch_reg0 = (void __iomem *)adev->rmmio + 4 * reg_access_ctrl->scratch_reg0;
 	scratch_reg1 = (void __iomem *)adev->rmmio + 4 * reg_access_ctrl->scratch_reg1;
@@ -1053,6 +1056,9 @@ void amdgpu_sriov_wreg(struct amdgpu_device *adev,
 {
 	u32 rlcg_flag;
 
+	if (amdgpu_device_skip_hw_access(adev))
+		return;
+
 	if (!amdgpu_sriov_runtime(adev) &&
 		amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags, hwip, true, &rlcg_flag)) {
 		amdgpu_virt_rlcg_reg_rw(adev, offset, value, rlcg_flag, xcc_id);
@@ -1070,6 +1076,9 @@ u32 amdgpu_sriov_rreg(struct amdgpu_device *adev,
 {
 	u32 rlcg_flag;
 
+	if (amdgpu_device_skip_hw_access(adev))
+		return 0;
+
 	if (!amdgpu_sriov_runtime(adev) &&
 		amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags, hwip, false, &rlcg_flag))
 		return amdgpu_virt_rlcg_reg_rw(adev, offset, 0, rlcg_flag, xcc_id);