[BNX2]: Add ethtool support for remote PHY.

Modify the driver's ethtool_ops->get_settings and set_settings
functions to support remote PHY.  Users control the remote copper
PHY settings by specifying link settings for the tp (twisted pair)
port.

The nway_reset function is also modified to support remote PHY.
mii-tool operations are not supported on remote PHY and we will
return -EOPNOTSUPP.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index c571da60241d599da18e0aa05586a2b0d65dca9a..d7fad6938bdd03f8293fd647c7c6b4b4d4045878 100644 (file)
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -5363,17 +5363,25 @@ static int
 bnx2_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 {
        struct bnx2 *bp = netdev_priv(dev);
+       int support_serdes = 0, support_copper = 0;
 
        cmd->supported = SUPPORTED_Autoneg;
-       if (bp->phy_flags & PHY_SERDES_FLAG) {
+       if (bp->phy_flags & REMOTE_PHY_CAP_FLAG) {
+               support_serdes = 1;
+               support_copper = 1;
+       } else if (bp->phy_port == PORT_FIBRE)
+               support_serdes = 1;
+       else
+               support_copper = 1;
+
+       if (support_serdes) {
                cmd->supported |= SUPPORTED_1000baseT_Full |
                        SUPPORTED_FIBRE;
                if (bp->phy_flags & PHY_2_5G_CAPABLE_FLAG)
                        cmd->supported |= SUPPORTED_2500baseX_Full;
 
-               cmd->port = PORT_FIBRE;
        }
-       else {
+       if (support_copper) {
                cmd->supported |= SUPPORTED_10baseT_Half |
                        SUPPORTED_10baseT_Full |
                        SUPPORTED_100baseT_Half |
@@ -5381,9 +5389,10 @@ bnx2_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
                        SUPPORTED_1000baseT_Full |
                        SUPPORTED_TP;
 
-               cmd->port = PORT_TP;
        }
 
+       spin_lock_bh(&bp->phy_lock);
+       cmd->port = bp->phy_port;
        cmd->advertising = bp->advertising;
 
        if (bp->autoneg & AUTONEG_SPEED) {
@@ -5401,6 +5410,7 @@ bnx2_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
                cmd->speed = -1;
                cmd->duplex = -1;
        }
+       spin_unlock_bh(&bp->phy_lock);
 
        cmd->transceiver = XCVR_INTERNAL;
        cmd->phy_address = bp->phy_addr;
@@ -5416,6 +5426,15 @@ bnx2_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
        u8 req_duplex = bp->req_duplex;
        u16 req_line_speed = bp->req_line_speed;
        u32 advertising = bp->advertising;
+       int err = -EINVAL;
+
+       spin_lock_bh(&bp->phy_lock);
+
+       if (cmd->port != PORT_TP && cmd->port != PORT_FIBRE)
+               goto err_out_unlock;
+
+       if (cmd->port != bp->phy_port && !(bp->phy_flags & REMOTE_PHY_CAP_FLAG))
+               goto err_out_unlock;
 
        if (cmd->autoneg == AUTONEG_ENABLE) {
                autoneg |= AUTONEG_SPEED;
@@ -5428,44 +5447,41 @@ bnx2_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
                        (cmd->advertising == ADVERTISED_100baseT_Half) ||
                        (cmd->advertising == ADVERTISED_100baseT_Full)) {
 
-                       if (bp->phy_flags & PHY_SERDES_FLAG)
-                               return -EINVAL;
+                       if (cmd->port == PORT_FIBRE)
+                               goto err_out_unlock;
 
                        advertising = cmd->advertising;
 
                } else if (cmd->advertising == ADVERTISED_2500baseX_Full) {
-                       if (!(bp->phy_flags & PHY_2_5G_CAPABLE_FLAG))
-                               return -EINVAL;
-               } else if (cmd->advertising == ADVERTISED_1000baseT_Full) {
+                       if (!(bp->phy_flags & PHY_2_5G_CAPABLE_FLAG) ||
+                           (cmd->port == PORT_TP))
+                               goto err_out_unlock;
+               } else if (cmd->advertising == ADVERTISED_1000baseT_Full)
                        advertising = cmd->advertising;
-               }
-               else if (cmd->advertising == ADVERTISED_1000baseT_Half) {
-                       return -EINVAL;
-               }
+               else if (cmd->advertising == ADVERTISED_1000baseT_Half)
+                       goto err_out_unlock;
                else {
-                       if (bp->phy_flags & PHY_SERDES_FLAG) {
+                       if (cmd->port == PORT_FIBRE)
                                advertising = ETHTOOL_ALL_FIBRE_SPEED;
-                       }
-                       else {
+                       else
                                advertising = ETHTOOL_ALL_COPPER_SPEED;
-                       }
                }
                advertising |= ADVERTISED_Autoneg;
        }
        else {
-               if (bp->phy_flags & PHY_SERDES_FLAG) {
+               if (cmd->port == PORT_FIBRE) {
                        if ((cmd->speed != SPEED_1000 &&
                             cmd->speed != SPEED_2500) ||
                            (cmd->duplex != DUPLEX_FULL))
-                               return -EINVAL;
+                               goto err_out_unlock;
 
                        if (cmd->speed == SPEED_2500 &&
                            !(bp->phy_flags & PHY_2_5G_CAPABLE_FLAG))
-                               return -EINVAL;
-               }
-               else if (cmd->speed == SPEED_1000) {
-                       return -EINVAL;
+                               goto err_out_unlock;
                }
+               else if (cmd->speed == SPEED_1000 || cmd->speed == SPEED_2500)
+                       goto err_out_unlock;
+
                autoneg &= ~AUTONEG_SPEED;
                req_line_speed = cmd->speed;
                req_duplex = cmd->duplex;
@@ -5477,13 +5493,12 @@ bnx2_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
        bp->req_line_speed = req_line_speed;
        bp->req_duplex = req_duplex;
 
-       spin_lock_bh(&bp->phy_lock);
-
-       bnx2_setup_phy(bp, bp->phy_port);
+       err = bnx2_setup_phy(bp, cmd->port);
 
+err_out_unlock:
        spin_unlock_bh(&bp->phy_lock);
 
-       return 0;
+       return err;
 }
 
 static void
@@ -5610,6 +5625,14 @@ bnx2_nway_reset(struct net_device *dev)
 
        spin_lock_bh(&bp->phy_lock);
 
+       if (bp->phy_flags & REMOTE_PHY_CAP_FLAG) {
+               int rc;
+
+               rc = bnx2_setup_remote_phy(bp, bp->phy_port);
+               spin_unlock_bh(&bp->phy_lock);
+               return rc;
+       }
+
        /* Force a link down visible on the other side */
        if (bp->phy_flags & PHY_SERDES_FLAG) {
                bnx2_write_phy(bp, bp->mii_bmcr, BMCR_LOOPBACK);
@@ -6219,6 +6242,9 @@ bnx2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
        case SIOCGMIIREG: {
                u32 mii_regval;
 
+               if (bp->phy_flags & REMOTE_PHY_CAP_FLAG)
+                       return -EOPNOTSUPP;
+
                if (!netif_running(dev))
                        return -EAGAIN;
 
@@ -6235,6 +6261,9 @@ bnx2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
                if (!capable(CAP_NET_ADMIN))
                        return -EPERM;
 
+               if (bp->phy_flags & REMOTE_PHY_CAP_FLAG)
+                       return -EOPNOTSUPP;
+
                if (!netif_running(dev))
                        return -EAGAIN;