BIF_FB_EN         693 drivers/gpu/drm/amd/amdgpu/sid.h #define	BIF_FB_EN						0x1524
BIF_FB_EN         842 drivers/gpu/drm/radeon/cikd.h #define	BIF_FB_EN						0x5490
BIF_FB_EN         448 drivers/gpu/drm/radeon/evergreend.h #define	BIF_FB_EN						0x5490
BIF_FB_EN         689 drivers/gpu/drm/radeon/sid.h #define	BIF_FB_EN						0x5490