mec_control_data
#define MEC_CDOFF(x) offsetof(struct mec_control_data, x)
struct mec_control_data *sc_control_data;
sizeof(struct mec_control_data), MEC_CONTROL_DATA_ALIGN, 0,
sizeof(struct mec_control_data),
memset(sc->sc_control_data, 0, sizeof(struct mec_control_data));
sizeof(struct mec_control_data), 1,
sizeof(struct mec_control_data), 0, 0, &sc->sc_cddmamap)) != 0) {
sc->sc_control_data, sizeof(struct mec_control_data), NULL,
sizeof(struct mec_control_data));