static void
atphy_reset(struct mii_softc *sc)
{
uint32_t reg;
int i;
/* Take PHY out of power down mode. */
PHY_WRITE(sc, 29, 0x29);
PHY_WRITE(sc, 30, 0);
reg = PHY_READ(sc, ATPHY_SCR);
/* Enable automatic crossover. */
reg |= ATPHY_SCR_AUTO_X_MODE;
/* Disable power down. */
reg &= ~ATPHY_SCR_MAC_PDOWN;
/* Enable CRS on Tx. */
reg |= ATPHY_SCR_ASSERT_CRS_ON_TX;
/* Auto correction for reversed cable polarity. */
reg |= ATPHY_SCR_POLARITY_REVERSAL;
PHY_WRITE(sc, ATPHY_SCR, reg);
/* Workaround F1 bug to reset phy. */
atphy_auto(sc);
for (i = 0; i < 1000; i++) {
DELAY(1);
if ((PHY_READ(sc, MII_BMCR) & BMCR_RESET) == 0)
break;
}
}
static int
atphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
uint16_t anar, bmcr, bmsr;
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 media indicates a different PHY instance,
* isolate ourselves.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
bmcr = PHY_READ(sc, MII_BMCR);
PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO);
return 0;
}
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
if (IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO ||
IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
atphy_auto(sc);
break;
}
bmcr = 0;
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_100_TX:
bmcr = BMCR_S100;
break;
case IFM_10_T:
bmcr = BMCR_S10;
break;
case IFM_NONE:
bmcr = PHY_READ(sc, MII_BMCR);
/*
* XXX
* Due to an unknown reason powering down PHY resulted
* in unexpected results such as inaccessbility of
* hardware of freshly rebooted system. Disable
* powering down PHY until I got more information for
* Attansic/Atheros PHY hardwares.
*/
PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO);
goto done;
default:
return EINVAL;
}
anar = atphy_anar(ife);
if ((ife->ifm_media & IFM_GMASK) & IFM_FDX) {
bmcr |= BMCR_FDX;
/* Enable pause. */
anar |= (3 << 10);
}
if (sc->mii_extcapabilities & (EXTSR_1000TFDX | EXTSR_1000THDX))
PHY_WRITE(sc, MII_100T2CR, 0);
PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA);
/*
* Reset the PHY so all changes take effect.
*/
PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_RESET | BMCR_AUTOEN |
BMCR_STARTNEG);
done:
break;
case MII_TICK:
/*
* If we're not currently selected, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return 0;
/*
* Is the interface even up?
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return 0;
/*
* Only used for autonegotiation.
*/
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
sc->mii_ticks = 0;
break;
}
/*
* check for link.
* Read the status register twice; BMSR_LINK is latch-low.
*/
bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
if (bmsr & BMSR_LINK) {
sc->mii_ticks = 0;
break;
}
/* Announce link loss right after it happens. */
if (sc->mii_ticks++ == 0)
break;
if (sc->mii_ticks <= sc->mii_anegticks)
return 0;
sc->mii_ticks = 0;
atphy_auto(sc);
break;
}
/* Update the media status. */
atphy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return 0;
}
static int
atphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
uint16_t anar, bmcr, bmsr;
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 media indicates a different PHY instance,
* isolate ourselves.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
bmcr = PHY_READ(sc, MII_BMCR);
PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO);
return (0);
}
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
if (IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO ||
IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
atphy_auto(sc);
break;
}
bmcr = 0;
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_100_TX:
bmcr = BMCR_S100;
break;
case IFM_10_T:
bmcr = BMCR_S10;
break;
case IFM_NONE:
bmcr = PHY_READ(sc, MII_BMCR);
PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN);
goto done;
default:
return (EINVAL);
}
anar = atphy_anar(ife);
if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) {
bmcr |= BMCR_FDX;
/* Enable pause. */
anar |= (3 << 10);
}
PHY_WRITE(sc, MII_100T2CR, 0);
PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA);
/*
* Reset the PHY so all changes take effect.
*/
PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_RESET);
done:
break;
case MII_TICK:
/*
* If we're not currently selected, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return (0);
/*
* Is the interface even up?
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return (0);
/*
* Only used for autonegotiation.
*/
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
sc->mii_ticks = 0;
break;
}
/*
* check for link.
* Read the status register twice; BMSR_LINK is latch-low.
*/
bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
if (bmsr & BMSR_LINK) {
sc->mii_ticks = 0;
break;
}
/* Announce link loss right after it happens. */
if (sc->mii_ticks++ == 0)
break;
if (sc->mii_ticks <= sc->mii_anegticks)
return (0);
sc->mii_ticks = 0;
atphy_auto(sc);
break;
}
/* Update the media status. */
atphy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
