BWN_PHY_CLASSCTL
classctl = BWN_PHY_READ(mac, BWN_PHY_CLASSCTL);
BWN_PHY_MASK(mac, BWN_PHY_CLASSCTL, 0xfffc);
BWN_PHY_WRITE(mac, BWN_PHY_CLASSCTL, classctl);
sav->phy_classctl = BWN_PHY_READ(mac, BWN_PHY_CLASSCTL);
BWN_PHY_MASK(mac, BWN_PHY_CLASSCTL, 0xfffc);
BWN_PHY_WRITE(mac, BWN_PHY_CLASSCTL, sav->phy_classctl);