mtw_set_region_4
int mtw_set_region_4(struct mtw_softc *, uint16_t, uint32_t, int);
mtw_set_region_4(sc, MTW_IVEIV(0), 0, 4);
mtw_set_region_4(sc, MTW_WCID_ATTR(0), 1, 8 * 32);
mtw_set_region_4(sc, MTW_WCID_ENTRY(0), 0xffffffff, 512);
mtw_set_region_4(sc, MTW_SKEY(0, 0), 0, 8 * 32);
mtw_set_region_4(sc, MTW_IVEIV(0), 0, 8 * 32);