Esempio n. 1
0
/*
 * 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);
}
Esempio n. 2
0
/*
 * 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);
}
Esempio n. 3
0
/*
 * 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);
}
Esempio n. 4
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);
}