DMAMAX
uimin(*dmasize, DMAMAX((size_t) *sc->sc_dmaaddr));
uimin(*dmasize, DMAMAX((size_t)*sc->sc_dmaaddr));
uimin(*dmasize, DMAMAX((size_t) *sc->sc_dmaaddr));
size = uimin(*dmasize, DMAMAX((size_t)*addr));