CP_RB0_RPTR      1035 drivers/gpu/drm/amd/amdgpu/sid.h #define	CP_RB0_RPTR					0x21C0
CP_RB0_RPTR      1113 drivers/gpu/drm/radeon/cikd.h #define	CP_RB0_RPTR					0x8700
CP_RB0_RPTR       323 drivers/gpu/drm/radeon/nid.h #define	CP_RB0_RPTR					0x8700
CP_RB0_RPTR      1036 drivers/gpu/drm/radeon/sid.h #define	CP_RB0_RPTR					0x8700