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authorPhil Sutter <phil.sutter@viprinet.com>2013-03-06 07:49:02 +0000
committerDavid S. Miller <davem@davemloft.net>2013-03-07 16:17:45 -0500
commit260055bb1f1f8b5328601816c50fd7e0dfda7dff (patch)
treee0e9a4b5eed0928c04a9a63654f976af85cb4c5c
parent80028ea1c0afc24d4ddeb8dd2a9992fff03616ca (diff)
mv643xx_eth: fix for disabled autoneg
When autoneg has been disabled in the PHY (Marvell 88E1118 here), auto negotiation between MAC and PHY seem non-functional anymore. The only way I found to workaround this is to manually configure the MAC with the settings sent to the PHY earlier. Signed-off-by: Phil Sutter <phil.sutter@viprinet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/marvell/mv643xx_eth.c55
1 files changed, 51 insertions, 4 deletions
diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c
index 29140502b71a..6562c736a1d8 100644
--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
@@ -1081,6 +1081,45 @@ static void txq_set_fixed_prio_mode(struct tx_queue *txq)
/* mii management interface *************************************************/
+static void mv643xx_adjust_pscr(struct mv643xx_eth_private *mp)
+{
+ u32 pscr = rdlp(mp, PORT_SERIAL_CONTROL);
+ u32 autoneg_disable = FORCE_LINK_PASS |
+ DISABLE_AUTO_NEG_SPEED_GMII |
+ DISABLE_AUTO_NEG_FOR_FLOW_CTRL |
+ DISABLE_AUTO_NEG_FOR_DUPLEX;
+
+ if (mp->phy->autoneg == AUTONEG_ENABLE) {
+ /* enable auto negotiation */
+ pscr &= ~autoneg_disable;
+ goto out_write;
+ }
+
+ pscr |= autoneg_disable;
+
+ if (mp->phy->speed == SPEED_1000) {
+ /* force gigabit, half duplex not supported */
+ pscr |= SET_GMII_SPEED_TO_1000;
+ pscr |= SET_FULL_DUPLEX_MODE;
+ goto out_write;
+ }
+
+ pscr &= ~SET_GMII_SPEED_TO_1000;
+
+ if (mp->phy->speed == SPEED_100)
+ pscr |= SET_MII_SPEED_TO_100;
+ else
+ pscr &= ~SET_MII_SPEED_TO_100;
+
+ if (mp->phy->duplex == DUPLEX_FULL)
+ pscr |= SET_FULL_DUPLEX_MODE;
+ else
+ pscr &= ~SET_FULL_DUPLEX_MODE;
+
+out_write:
+ wrlp(mp, PORT_SERIAL_CONTROL, pscr);
+}
+
static irqreturn_t mv643xx_eth_err_irq(int irq, void *dev_id)
{
struct mv643xx_eth_shared_private *msp = dev_id;
@@ -1499,6 +1538,7 @@ static int
mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
+ int ret;
if (mp->phy == NULL)
return -EINVAL;
@@ -1508,7 +1548,10 @@ mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
*/
cmd->advertising &= ~ADVERTISED_1000baseT_Half;
- return phy_ethtool_sset(mp->phy, cmd);
+ ret = phy_ethtool_sset(mp->phy, cmd);
+ if (!ret)
+ mv643xx_adjust_pscr(mp);
+ return ret;
}
static void mv643xx_eth_get_drvinfo(struct net_device *dev,
@@ -2442,11 +2485,15 @@ static int mv643xx_eth_stop(struct net_device *dev)
static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
+ int ret;
- if (mp->phy != NULL)
- return phy_mii_ioctl(mp->phy, ifr, cmd);
+ if (mp->phy == NULL)
+ return -ENOTSUPP;
- return -EOPNOTSUPP;
+ ret = phy_mii_ioctl(mp->phy, ifr, cmd);
+ if (!ret)
+ mv643xx_adjust_pscr(mp);
+ return ret;
}
static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)

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