CP_RB2_RPTR_ADDR_HI 1303 drivers/gpu/drm/amd/amdgpu/sid.h #define	CP_RB2_RPTR_ADDR_HI				0x3068
CP_RB2_RPTR_ADDR_HI  507 drivers/gpu/drm/radeon/nid.h #define	CP_RB2_RPTR_ADDR_HI				0xC1A0
CP_RB2_RPTR_ADDR_HI 1274 drivers/gpu/drm/radeon/sid.h #define	CP_RB2_RPTR_ADDR_HI				0xC1A0