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Some PHYs like the Level One LXT970 optionally can default to isolation

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after rest, in which case we may need to deisolate it.
Tested by:	nwhitehorn

MFC after	1 week
This commit is contained in:
Marius Strobl 2011-05-12 14:16:07 +00:00
parent dce0bcca8a
commit 7bd2d458c2
1 changed files with 9 additions and 6 deletions
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15
sys/dev/mii/mii_physubr.c
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@ -257,7 +257,7 @@ void
mii_phy_reset(struct mii_softc *sc)
{
struct ifmedia_entry *ife = sc->mii_pdata->mii_media.ifm_cur;
int reg, i;
int i, reg;
if ((sc->mii_flags & MIIF_NOISOLATE) != 0)
reg = BMCR_RESET;
@ -273,11 +273,14 @@ mii_phy_reset(struct mii_softc *sc)
DELAY(1000);
}
if ((sc->mii_flags & MIIF_NOISOLATE) == 0) {
if ((ife == NULL && sc->mii_inst != 0) ||
(ife != NULL && IFM_INST(ife->ifm_media) != sc->mii_inst))
PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
}
/* NB: a PHY may default to isolation. */
reg &= ~BMCR_ISO;
if ((sc->mii_flags & MIIF_NOISOLATE) == 0 &&
((ife == NULL && sc->mii_inst != 0) ||
(ife != NULL && IFM_INST(ife->ifm_media) != sc->mii_inst)))
reg |= BMCR_ISO;
if (PHY_READ(sc, MII_BMCR) != reg)
PHY_WRITE(sc, MII_BMCR, reg);
}
void