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igb: Add loopback test support for i210 

Early release of i210 devices had the loopback test of the ethtool
self-test disabled. This patch enables the loopback test for i210 devices.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Carolyn Wyborny 2012-06-08 05:01:39 +00:00 committed by Jeff Kirsher
parent 600e177920
commit 8aa23f0d86
1 changed files with 16 additions and 35 deletions
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51
drivers/net/ethernet/intel/igb/igb_ethtool.c
View File

@ -1511,33 +1511,22 @@ static int igb_integrated_phy_loopback(struct igb_adapter *adapter)
{
struct e1000_hw *hw = &adapter->hw;
u32 ctrl_reg = 0;
u16 phy_reg = 0;
hw->mac.autoneg = false;
switch (hw->phy.type) {
case e1000_phy_m88:
/* Auto-MDI/MDIX Off */
igb_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, 0x0808);
/* reset to update Auto-MDI/MDIX */
igb_write_phy_reg(hw, PHY_CONTROL, 0x9140);
/* autoneg off */
igb_write_phy_reg(hw, PHY_CONTROL, 0x8140);
break;
case e1000_phy_82580:
/* enable MII loopback */
igb_write_phy_reg(hw, I82580_PHY_LBK_CTRL, 0x8041);
break;
case e1000_phy_i210:
/* set loopback speed in PHY */
igb_read_phy_reg(hw, (GS40G_PAGE_SELECT & GS40G_PAGE_2),
&phy_reg);
phy_reg |= GS40G_MAC_SPEED_1G;
igb_write_phy_reg(hw, (GS40G_PAGE_SELECT & GS40G_PAGE_2),
phy_reg);
ctrl_reg = rd32(E1000_CTRL_EXT);
default:
break;
if (hw->phy.type == e1000_phy_m88) {
if (hw->phy.id != I210_I_PHY_ID) {
/* Auto-MDI/MDIX Off */
igb_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, 0x0808);
/* reset to update Auto-MDI/MDIX */
igb_write_phy_reg(hw, PHY_CONTROL, 0x9140);
/* autoneg off */
igb_write_phy_reg(hw, PHY_CONTROL, 0x8140);
} else {
/* force 1000, set loopback */
igb_write_phy_reg(hw, I347AT4_PAGE_SELECT, 0);
igb_write_phy_reg(hw, PHY_CONTROL, 0x4140);
}
}
/* add small delay to avoid loopback test failure */
@ -1555,7 +1544,7 @@ static int igb_integrated_phy_loopback(struct igb_adapter *adapter)
E1000_CTRL_FD | /* Force Duplex to FULL */
E1000_CTRL_SLU); /* Set link up enable bit */
if ((hw->phy.type == e1000_phy_m88) || (hw->phy.type == e1000_phy_i210))
if (hw->phy.type == e1000_phy_m88)
ctrl_reg |= E1000_CTRL_ILOS; /* Invert Loss of Signal */
wr32(E1000_CTRL, ctrl_reg);
@ -1563,11 +1552,10 @@ static int igb_integrated_phy_loopback(struct igb_adapter *adapter)
/* Disable the receiver on the PHY so when a cable is plugged in, the
* PHY does not begin to autoneg when a cable is reconnected to the NIC.
*/
if ((hw->phy.type == e1000_phy_m88) || (hw->phy.type == e1000_phy_i210))
if (hw->phy.type == e1000_phy_m88)
igb_phy_disable_receiver(adapter);
udelay(500);
mdelay(500);
return 0;
}
@ -1827,13 +1815,6 @@ static int igb_loopback_test(struct igb_adapter *adapter, u64 *data)
*data = 0;
goto out;
}
if ((adapter->hw.mac.type == e1000_i210)
|| (adapter->hw.mac.type == e1000_i211)) {
dev_err(&adapter->pdev->dev,
"Loopback test not supported on this part at this time.\n");
*data = 0;
goto out;
}
*data = igb_setup_desc_rings(adapter);
if (*data)
goto out;