Date: Thu, 24 Jan 2013 16:09:04 +0100 From: Marius Strobl <marius@alchemy.franken.de> To: Paul Keusemann <pkeusem@visi.com> Cc: freebsd-net@freebsd.org Subject: Re: Cas driver fails to load first time after boot. Message-ID: <20130124150904.GA27559@alchemy.franken.de> In-Reply-To: <50FEFAB8.1070006@visi.com> References: <50FEFAB8.1070006@visi.com>
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On Tue, Jan 22, 2013 at 02:46:48PM -0600, Paul Keusemann wrote:
> Hi,
>
> I've got a Dell R200 which I'm trying to build into a gateway with a Sun
> QGE (501-6738-10). The cas driver fails to load the first time I try to
> load it but succeeds the second time. Is this a problem with the card,
> the driver, my karma?
Wrong phase of the moon, apparently :)
The MII setup of these chips is a bit tricky and I'm not sure whether
I've hit all code paths during development of the driver. I certainly
didn't test with a 501-6738, these have been reported as working before,
though. It also doesn't make much sense that attaching the devices
succeeds on the second attempt. Could you please use a if_cas.ko built
with the attached patch and report the debug output for one of the
interfaces in both the working and the non-working case?
Marius
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Index: if_cas.c
===================================================================
--- if_cas.c (revision 245046)
+++ if_cas.c (working copy)
@@ -332,6 +332,8 @@ cas_attach(struct cas_softc *sc)
*/
error = ENXIO;
v = CAS_READ_4(sc, CAS_MIF_CONF);
+device_printf(sc->sc_dev, "MIF=0x%x PCFG=0x%x\n", v,
+CAS_READ_4(sc, CAS_SATURN_PCFG));
if ((v & CAS_MIF_CONF_MDI1) != 0) {
v |= CAS_MIF_CONF_PHY_SELECT;
CAS_WRITE_4(sc, CAS_MIF_CONF, v);
@@ -347,6 +349,8 @@ cas_attach(struct cas_softc *sc)
error = mii_attach(sc->sc_dev, &sc->sc_miibus, ifp,
cas_mediachange, cas_mediastatus, BMSR_DEFCAPMASK,
MII_PHY_ANY, MII_OFFSET_ANY, MIIF_DOPAUSE);
+if (error == 0)
+device_printf(sc->sc_dev, "external PHY\n");
}
/*
* Fall back on an internal PHY if no external PHY was found.
@@ -367,6 +371,8 @@ cas_attach(struct cas_softc *sc)
error = mii_attach(sc->sc_dev, &sc->sc_miibus, ifp,
cas_mediachange, cas_mediastatus, BMSR_DEFCAPMASK,
MII_PHY_ANY, MII_OFFSET_ANY, MIIF_DOPAUSE);
+if (error == 0)
+device_printf(sc->sc_dev, "internal PHY\n");
}
} else {
/*
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