kvtop
sc->sc_maddr = kvtop((caddr_t)sc->bh);
int kvtop(caddr_t);
DBDMA_BUILD(cmdp, DBDMA_CMD_OUT_LAST, 0, len, kvtop(pa),
if ((kvtop(sc->sc_maddr) < 0xC0000) ||
(kvtop(sc->sc_maddr) + sc->sc_msize > 0xF0000)) {
pg = (kvtop(sc->sc_maddr) & 0x3C000) >> 14;
sc->sc_addr = kvtop(sc->sc_mem);
sc->sc_addr = kvtop(sc->sc_mem);