getsoftc
if ((sc = getsoftc(fd_cd, FDUNIT(bp->b_dev))) == NULL)
if ((sc = getsoftc(fd_cd, FDUNIT(dev))) == NULL)
sc = getsoftc(fd_cd, FDUNIT(dev));
sc = getsoftc(fd_cd, FDUNIT(dev));
sc = getsoftc(fd_cd, unit);
(&(((struct ms_softc *)getsoftc(ms_cd, MS_UNIT(d)))->sc_ports[MS_PORT(d)]))
sc = (struct ms_softc *)getsoftc(ms_cd, unit);