RPTR_BLOCK_SIZE    53 drivers/gpu/drm/amd/amdkfd/cik_regs.h #define	RPTR_BLOCK_SIZE(x)				((x) << 8)
RPTR_BLOCK_SIZE  1522 drivers/gpu/drm/radeon/cikd.h #define		RPTR_BLOCK_SIZE(x)			((x) << 8)