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Commit e7fd9253 authored by Don Skidmore's avatar Don Skidmore Committed by Jeff Kirsher
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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: default avatarDon Skidmore <donald.c.skidmore@intel.com>
Tested-by: default avatarEvan Swanson <evan.swanson@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent c89c7112

drivers/net/ixgbe/ixgbe_ethtool.c

+7 −0
Original line number Diff line number Diff line
@@ -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 */