mii_probe
rc = mii_probe(dev, &sc->bce_miibus, &mii_args);
error = mii_probe(dev, &sc->bge_miibus, &mii_args);
error = mii_probe(dev, &sc->bnx_miibus, &mii_args);
return mii_probe(dev, child, &args);
int mii_probe(device_t, device_t *, const struct mii_probe_args *);