drm_scatter_gather  631 include/drm/drm.h #define DRM_IOCTL_SG_ALLOC		DRM_IOWR(0x38, struct drm_scatter_gather)
drm_scatter_gather  632 include/drm/drm.h #define DRM_IOCTL_SG_FREE		DRM_IOW( 0x39, struct drm_scatter_gather)
drm_scatter_gather  690 include/drm/drm.h typedef struct drm_scatter_gather drm_scatter_gather_t;