amdgpu_gfx_scratch_get
int amdgpu_gfx_scratch_get(struct amdgpu_device *adev, uint32_t *reg);
r = amdgpu_gfx_scratch_get(adev, &scratch);
r = amdgpu_gfx_scratch_get(adev, &scratch);
r = amdgpu_gfx_scratch_get(adev, &scratch);
r = amdgpu_gfx_scratch_get(adev, &scratch);