genfb_softc_t
int genfbopen(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode,
int genfbclose(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode)
int genfbread(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio,
int genfbwrite(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio,
int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp, u_long cmd,
int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp, vm_offset_t offset,
int genfbopen(genfb_softc_t *sc, video_adapter_t *adp,
int genfbclose(genfb_softc_t *sc, video_adapter_t *adp,
int genfbread(genfb_softc_t *sc, video_adapter_t *adp,
int genfbwrite(genfb_softc_t *sc, video_adapter_t *adp,
int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp,
int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp,
genfb_softc_t gensc;