/*
* Inform the PHYs that the interface is down.
*/
void
mii_down(struct mii_data *mii)
{
struct mii_softc *child;
for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
child = LIST_NEXT(child, mii_list))
(void) PHY_SERVICE(child, mii, MII_DOWN);
}
/*
* Get media status from PHYs.
*/
void
mii_pollstat(struct mii_data *mii)
{
struct mii_softc *child;
mii->mii_media_status = 0;
mii->mii_media_active = IFM_NONE;
for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
child = LIST_NEXT(child, mii_list))
(void) PHY_SERVICE(child, mii, MII_POLLSTAT);
}
/*
* Media changed; notify all PHYs.
*/
int
mii_mediachg(struct mii_data *mii)
{
struct mii_softc *child;
int rv;
mii->mii_media_status = 0;
mii->mii_media_active = IFM_NONE;
for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
child = LIST_NEXT(child, mii_list)) {
rv = PHY_SERVICE(child, mii, MII_MEDIACHG);
if (rv)
return (rv);
}
return (0);
}
int
mlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
struct mii_softc *other = NULL;
struct mlphy_softc *msc = (struct mlphy_softc *)sc;
int other_inst, reg;
LIST_FOREACH(other, &mii->mii_phys, mii_list)
if (other != sc)
break;
if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
return (ENXIO);
switch (cmd) {
case MII_POLLSTAT:
/*
* If we're not polling our PHY instance, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return (0);
break;
case MII_MEDIACHG:
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_AUTO:
msc->ml_state = ML_STATE_AUTO_SELF;
if (other != NULL) {
mii_phy_reset(other);
PHY_WRITE(other, MII_BMCR, BMCR_ISO);
}
(void)mii_phy_auto(sc, 0);
msc->ml_linked = 0;
break;
case IFM_10_T:
/*
* For 10baseT modes, reset and program the
* companion PHY (of any), then setup ourselves
* to match. This will put us in pass-through
* mode and let the companion PHY do all the
* work.
* BMCR data is stored in the ifmedia entry.
*/
if (other != NULL) {
mii_phy_reset(other);
PHY_WRITE(other, MII_BMCR, ife->ifm_data);
}
mii_phy_setmedia(sc);
msc->ml_state = 0;
break;
case IFM_100_TX:
/*
* For 100baseTX modes, reset and isolate the
* companion PHY (if any), then setup ourselves
* accordingly.
*
* BMCR data is stored in the ifmedia entry.
*/
if (other != NULL) {
mii_phy_reset(other);
PHY_WRITE(other, MII_BMCR, BMCR_ISO);
}
mii_phy_setmedia(sc);
msc->ml_state = 0;
break;
default:
return (EINVAL);
}
break;
case MII_TICK:
/*
* If interface is not up, don't do anything
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return (0);
/*
* Only used for autonegotiation.
*/
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
break;
/*
* Check to see if we have link. If we do, we don't
* need to restart the autonegotiation process. Read
* the BMSR twice in case it's latched.
* If we're in a 10Mbps mode, check the link of the
* 10Mbps PHY. Sometimes the Micro Linear PHY's
* linkstat bit will clear while the linkstat bit of
* the companion PHY will remain set.
*/
if (msc->ml_state == ML_STATE_AUTO_OTHER) {
reg = PHY_READ(other, MII_BMSR) |
PHY_READ(other, MII_BMSR);
} else {
reg = PHY_READ(sc, MII_BMSR) |
PHY_READ(sc, MII_BMSR);
}
if (reg & BMSR_LINK) {
if (!msc->ml_linked) {
msc->ml_linked = 1;
mlphy_status(sc);
}
sc->mii_ticks = 0;
break;
}
/*
* Only retry autonegotiation every 5 seconds.
*/
if (++sc->mii_ticks <= MII_ANEGTICKS)
break;
sc->mii_ticks = 0;
msc->ml_linked = 0;
mii->mii_media_active = IFM_NONE;
mii_phy_reset(sc);
msc->ml_state = ML_STATE_AUTO_SELF;
if (other != NULL) {
mii_phy_reset(other);
PHY_WRITE(other, MII_BMCR, BMCR_ISO);
}
mii_phy_auto(sc, 0);
break;
case MII_DOWN:
mii_phy_down(sc);
return (0);
}
/* Update the media status. */
if (msc->ml_state == ML_STATE_AUTO_OTHER && other != NULL) {
other_inst = other->mii_inst;
other->mii_inst = sc->mii_inst;
if (IFM_INST(ife->ifm_media) == other->mii_inst)
(void) PHY_SERVICE(other, mii, MII_POLLSTAT);
other->mii_inst = other_inst;
sc->mii_media_active = other->mii_media_active;
sc->mii_media_status = other->mii_media_status;
} else
ukphy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}