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ixgbe: fix X540 ethtool loopback test.

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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 <donald.c.skidmore@intel.com>
Tested-by: Evan Swanson <evan.swanson@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Don Skidmore 2011-04-16 05:29:14 +00:00 committed by Jeff Kirsher
parent c89c7112d3
commit e7fd9253d8
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ixgbe/ixgbe_ethtool.c
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@ -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 */