[net-next-2.6 11/12] ixgbe: fix X540 ethtool loopback test.
flat view
STALE5659d
REVIEWED: 1 (0M)
From: Jeff Kirsher <hidden>
Date: 2011-04-27 09:35:01
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
1 review trailer.
From: Don Skidmore <redacted> 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 <redacted> Tested-by: Evan Swanson <redacted> Signed-off-by: Jeff Kirsher <redacted> --- drivers/net/ixgbe/ixgbe_ethtool.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c
index 6cf1c71..bd7524e 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 */
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1.7.4.4