diff options
author | Saeed Mahameed <saeedm@mellanox.com> | 2014-10-27 11:37:41 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2014-10-28 17:18:00 -0400 |
commit | d48b3ab4c0e4356f3b1ccaea8cb838cf1292f7da (patch) | |
tree | 70b6ae277c9a0df191d046c19f0d7e53e035559d /drivers/net/ethernet/mellanox/mlx4 | |
parent | 2c762679435dc812b7031ef9a839b901827294a9 (diff) | |
download | op-kernel-dev-d48b3ab4c0e4356f3b1ccaea8cb838cf1292f7da.zip op-kernel-dev-d48b3ab4c0e4356f3b1ccaea8cb838cf1292f7da.tar.gz |
net/mlx4_en: Use PTYS register to set ethtool settings (Speed)
Added Support to set speed or advertised link modes via ethtool:
ethtool -s <ifname> [speed <speed>] [advertise <link modes>]
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 108 |
1 files changed, 104 insertions, 4 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c index 64b6743..144d6bd 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c @@ -570,6 +570,31 @@ static u32 ptys2ethtool_link_modes(u32 eth_proto, enum ethtool_report report) return link_modes; } +static u32 ethtool2ptys_link_modes(u32 link_modes, enum ethtool_report report) +{ + int i; + u32 ptys_modes = 0; + + for (i = 0; i < MLX4_LINK_MODES_SZ; i++) { + if (ptys2ethtool_map[i][report] & link_modes) + ptys_modes |= 1 << i; + } + return ptys_modes; +} + +/* Convert actual speed (SPEED_XXX) to ptys link modes */ +static u32 speed2ptys_link_modes(u32 speed) +{ + int i; + u32 ptys_modes = 0; + + for (i = 0; i < MLX4_LINK_MODES_SZ; i++) { + if (ptys2ethtool_map[i][SPEED] == speed) + ptys_modes |= 1 << i; + } + return ptys_modes; +} + static int ethtool_get_ptys_settings(struct net_device *dev, struct ethtool_cmd *cmd) { @@ -698,14 +723,89 @@ static int mlx4_en_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) return 0; } +/* Calculate PTYS admin according ethtool speed (SPEED_XXX) */ +static __be32 speed_set_ptys_admin(struct mlx4_en_priv *priv, u32 speed, + __be32 proto_cap) +{ + __be32 proto_admin = 0; + + if (!speed) { /* Speed = 0 ==> Reset Link modes */ + proto_admin = proto_cap; + en_info(priv, "Speed was set to 0, Reset advertised Link Modes to default (%x)\n", + be32_to_cpu(proto_cap)); + } else { + u32 ptys_link_modes = speed2ptys_link_modes(speed); + + proto_admin = cpu_to_be32(ptys_link_modes) & proto_cap; + en_info(priv, "Setting Speed to %d\n", speed); + } + return proto_admin; +} + static int mlx4_en_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) { - if ((cmd->autoneg == AUTONEG_ENABLE) || - (ethtool_cmd_speed(cmd) != SPEED_10000) || - (cmd->duplex != DUPLEX_FULL)) + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_ptys_reg ptys_reg; + __be32 proto_admin; + int ret; + + u32 ptys_adv = ethtool2ptys_link_modes(cmd->advertising, ADVERTISED); + int speed = ethtool_cmd_speed(cmd); + + en_dbg(DRV, priv, "Set Speed=%d adv=0x%x autoneg=%d duplex=%d\n", + speed, cmd->advertising, cmd->autoneg, cmd->duplex); + + if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETH_PROT_CTRL) || + (cmd->autoneg == AUTONEG_ENABLE) || (cmd->duplex == DUPLEX_HALF)) return -EINVAL; - /* Nothing to change */ + memset(&ptys_reg, 0, sizeof(ptys_reg)); + ptys_reg.local_port = priv->port; + ptys_reg.proto_mask = MLX4_PTYS_EN; + ret = mlx4_ACCESS_PTYS_REG(priv->mdev->dev, + MLX4_ACCESS_REG_QUERY, &ptys_reg); + if (ret) { + en_warn(priv, "Failed to QUERY mlx4_ACCESS_PTYS_REG status(%x)\n", + ret); + return 0; + } + + proto_admin = cpu_to_be32(ptys_adv); + if (speed >= 0 && speed != priv->port_state.link_speed) + /* If speed was set then speed decides :-) */ + proto_admin = speed_set_ptys_admin(priv, speed, + ptys_reg.eth_proto_cap); + + proto_admin &= ptys_reg.eth_proto_cap; + + if (proto_admin == ptys_reg.eth_proto_admin) + return 0; /* Nothing to change */ + + if (!proto_admin) { + en_warn(priv, "Not supported link mode(s) requested, check supported link modes.\n"); + return -EINVAL; /* nothing to change due to bad input */ + } + + en_dbg(DRV, priv, "mlx4_ACCESS_PTYS_REG SET: ptys_reg.eth_proto_admin = 0x%x\n", + be32_to_cpu(proto_admin)); + + ptys_reg.eth_proto_admin = proto_admin; + ret = mlx4_ACCESS_PTYS_REG(priv->mdev->dev, MLX4_ACCESS_REG_WRITE, + &ptys_reg); + if (ret) { + en_warn(priv, "Failed to write mlx4_ACCESS_PTYS_REG eth_proto_admin(0x%x) status(0x%x)", + be32_to_cpu(ptys_reg.eth_proto_admin), ret); + return ret; + } + + en_warn(priv, "Port link mode changed, restarting port...\n"); + mutex_lock(&priv->mdev->state_lock); + if (priv->port_up) { + mlx4_en_stop_port(dev, 1); + if (mlx4_en_start_port(dev)) + en_err(priv, "Failed restarting port %d\n", priv->port); + } + mutex_unlock(&priv->mdev->state_lock); return 0; } |