amdgpu_io_rreg   1043 drivers/gpu/drm/amd/amdgpu/amdgpu.h u32 amdgpu_io_rreg(struct amdgpu_device *adev, u32 reg);
amdgpu_io_rreg   1106 drivers/gpu/drm/amd/amdgpu/amdgpu.h #define RREG32_IO(reg) amdgpu_io_rreg(adev, (reg))