From: Don Skidmore Date: Sat, 16 Apr 2011 05:29:14 +0000 (+0000) Subject: ixgbe: fix X540 ethtool loopback test. X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=e7fd9253d83703838953160ebb2899c5f6e2eee1;p=deliverable%2Flinux.git ixgbe: fix X540 ethtool loopback test. On X540 we need to set the MACC.FLU bit to 1 in order to force the link up before entering MAC loopback. This is only used in the ethtool loopback test, which was failing. This patch corrects it. Signed-off-by: Don Skidmore Tested-by: Evan Swanson Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c index 6cf1c71ed7f1..bd7524e4a00c 100644 --- a/drivers/net/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ixgbe/ixgbe_ethtool.c @@ -1595,6 +1595,13 @@ static int ixgbe_setup_loopback_test(struct ixgbe_adapter *adapter) struct ixgbe_hw *hw = &adapter->hw; u32 reg_data; + /* X540 needs to set the MACC.FLU bit to force link up */ + if (adapter->hw.mac.type == ixgbe_mac_X540) { + reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_MACC); + reg_data |= IXGBE_MACC_FLU; + IXGBE_WRITE_REG(&adapter->hw, IXGBE_MACC, reg_data); + } + /* right now we only support MAC loopback in the driver */ reg_data = IXGBE_READ_REG(&adapter->hw, IXGBE_HLREG0); /* Setup MAC loopback */