amdgpu_device_indirect_wreg64_ext
void amdgpu_device_indirect_wreg64_ext(struct amdgpu_device *adev,
adev->pcie_wreg64_ext = &amdgpu_device_indirect_wreg64_ext;
adev->pcie_wreg64_ext = &amdgpu_device_indirect_wreg64_ext;