ei_write24
sc->sc_ie.ie_bus_write24 = ei_write24;
ei_write24(&sc->sc_ie, IE_SCP_ISCP((u_long)sc->sc_ie.scp),
ei_write24(&sc->sc_ie, IE_ISCP_BASE((u_long)sc->sc_ie.iscp),
static void ei_write24(struct ie_softc *, int, int);