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;