From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phil Sutter Subject: [PATCH] fix mv643xx_eth for disabled autoneg Date: Wed, 6 Mar 2013 18:49:02 +0100 Message-ID: <1362592142-4049-1-git-send-email-phil.sutter@viprinet.com> Cc: netdev@vger.kernel.org To: Lennert Buytenhek Return-path: Received: from zimbra.vipri.net ([89.207.250.15]:53767 "EHLO zimbra.vipri.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753222Ab3CFRuL (ORCPT ); Wed, 6 Mar 2013 12:50:11 -0500 Sender: netdev-owner@vger.kernel.org List-ID: 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 --- drivers/net/ethernet/marvell/mv643xx_eth.c | 55 ++++++++++++++++++++++++++-- 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 5e1ca0f..5435833 100644 --- a/drivers/net/ethernet/marvell/mv643xx_eth.c +++ b/drivers/net/ethernet/marvell/mv643xx_eth.c @@ -1082,6 +1082,45 @@ 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; @@ -1500,6 +1539,7 @@ 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; @@ -1509,7 +1549,10 @@ 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, @@ -2448,11 +2491,15 @@ 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) -- 1.7.3.4