ATW_DPRINTF2
#define DPRINTF2(sc, x) if ((sc)->sc_if.if_flags & IFF_DEBUG) ATW_DPRINTF2(x)
ATW_DPRINTF2(("%s: reg[ " #reg " / %03x ] = %08x\n", \
ATW_DPRINTF2(("%s: %s\n", device_xname(sc->sc_dev), where));