IOMOD_DEVOFFSET
sc->sc_iobase = (bus_addr_t)ca->ca_hpa + IOMOD_DEVOFFSET;
bus_space_subregion(sc->sc_iot, sc->sc_ioh, IOMOD_DEVOFFSET,
IOMOD_HPASIZE - IOMOD_DEVOFFSET, &sc->sc_siop.sc_c.sc_rh);
sc->sc_iobase += IOMOD_DEVOFFSET;
rv = fdcprobe1(ca->ca_iot, ioh | IOMOD_DEVOFFSET);
ioh |= IOMOD_DEVOFFSET;