diff options
| author | Robert Healy <robert.healy@intel.com> | 2011-07-12 10:46:20 +0200 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-07-22 07:54:00 +0200 |
| commit | a14bc2bb7075e59be635a2470dc0a32c5a0e8e21 (patch) | |
| tree | 3e2b2db06f22d722ffb3a4264877a45ef37f02f3 /drivers/net/igb/igb_ethtool.c | |
| parent | e1000: always call e1000_check_for_link() on e1000_ce4100 MACs. (diff) | |
| download | linux-a14bc2bb7075e59be635a2470dc0a32c5a0e8e21.tar.xz linux-a14bc2bb7075e59be635a2470dc0a32c5a0e8e21.zip | |
igb: Fix for DH89xxCC near end loopback test
On this chipset it is required to configure the MPHY block for loopback tests. If MPHY is not configured then all loopback tests will report failures.
Signed-off-by: Robert Healy <robert.healy@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/igb/igb_ethtool.c')
| -rw-r--r-- | drivers/net/igb/igb_ethtool.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/net/igb/igb_ethtool.c b/drivers/net/igb/igb_ethtool.c index ed63ff4cf6d6..ff244ce803ce 100644 --- a/drivers/net/igb/igb_ethtool.c +++ b/drivers/net/igb/igb_ethtool.c @@ -1461,6 +1461,22 @@ static int igb_setup_loopback_test(struct igb_adapter *adapter) /* use CTRL_EXT to identify link type as SGMII can appear as copper */ if (reg & E1000_CTRL_EXT_LINK_MODE_MASK) { + if ((hw->device_id == E1000_DEV_ID_DH89XXCC_SGMII) || + (hw->device_id == E1000_DEV_ID_DH89XXCC_SERDES) || + (hw->device_id == E1000_DEV_ID_DH89XXCC_BACKPLANE) || + (hw->device_id == E1000_DEV_ID_DH89XXCC_SFP)) { + + /* Enable DH89xxCC MPHY for near end loopback */ + reg = rd32(E1000_MPHY_ADDR_CTL); + reg = (reg & E1000_MPHY_ADDR_CTL_OFFSET_MASK) | + E1000_MPHY_PCS_CLK_REG_OFFSET; + wr32(E1000_MPHY_ADDR_CTL, reg); + + reg = rd32(E1000_MPHY_DATA); + reg |= E1000_MPHY_PCS_CLK_REG_DIGINELBEN; + wr32(E1000_MPHY_DATA, reg); + } + reg = rd32(E1000_RCTL); reg |= E1000_RCTL_LBM_TCVR; wr32(E1000_RCTL, reg); @@ -1502,6 +1518,23 @@ static void igb_loopback_cleanup(struct igb_adapter *adapter) u32 rctl; u16 phy_reg; + if ((hw->device_id == E1000_DEV_ID_DH89XXCC_SGMII) || + (hw->device_id == E1000_DEV_ID_DH89XXCC_SERDES) || + (hw->device_id == E1000_DEV_ID_DH89XXCC_BACKPLANE) || + (hw->device_id == E1000_DEV_ID_DH89XXCC_SFP)) { + u32 reg; + + /* Disable near end loopback on DH89xxCC */ + reg = rd32(E1000_MPHY_ADDR_CTL); + reg = (reg & E1000_MPHY_ADDR_CTL_OFFSET_MASK) | + E1000_MPHY_PCS_CLK_REG_OFFSET; + wr32(E1000_MPHY_ADDR_CTL, reg); + + reg = rd32(E1000_MPHY_DATA); + reg &= ~E1000_MPHY_PCS_CLK_REG_DIGINELBEN; + wr32(E1000_MPHY_DATA, reg); + } + rctl = rd32(E1000_RCTL); rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); wr32(E1000_RCTL, rctl); |