diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c index 8dbcdc81104e717f0dcab6f98e823bc2a7c8f53d..48b74a5491551fcbb42afc9f29e012b553ea5079 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.c +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c @@ -4605,14 +4605,23 @@ void e1000_suspend_workarounds_ich8lan(struct e1000_hw *hw) /* Disable LPLU if both link partners support 100BaseT * EEE and 100Full is advertised on both ends of the - * link. + * link, and enable Auto Enable LPI since there will + * be no driver to enable LPI while in Sx. */ if ((eee_advert & I82579_EEE_100_SUPPORTED) && (dev_spec->eee_lp_ability & I82579_EEE_100_SUPPORTED) && - (hw->phy.autoneg_advertised & ADVERTISE_100_FULL)) + (hw->phy.autoneg_advertised & ADVERTISE_100_FULL)) { phy_ctrl &= ~(E1000_PHY_CTRL_D0A_LPLU | E1000_PHY_CTRL_NOND0A_LPLU); + + /* Set Auto Enable LPI after link up */ + e1e_rphy_locked(hw, + I217_LPI_GPIO_CTRL, &phy_reg); + phy_reg |= I217_LPI_GPIO_CTRL_AUTO_EN_LPI; + e1e_wphy_locked(hw, + I217_LPI_GPIO_CTRL, phy_reg); + } } /* For i217 Intel Rapid Start Technology support, @@ -4709,6 +4718,11 @@ void e1000_resume_workarounds_pchlan(struct e1000_hw *hw) return; } + /* Clear Auto Enable LPI after link up */ + e1e_rphy_locked(hw, I217_LPI_GPIO_CTRL, &phy_reg); + phy_reg &= ~I217_LPI_GPIO_CTRL_AUTO_EN_LPI; + e1e_wphy_locked(hw, I217_LPI_GPIO_CTRL, phy_reg); + if (!(er32(FWSM) & E1000_ICH_FWSM_FW_VALID)) { /* Restore clear on SMB if no manageability engine * is present diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.h b/drivers/net/ethernet/intel/e1000e/ich8lan.h index 5515126c81c199b5e44bd909ac9ea3f336cf4fcd..8066a498eaac5439d18c7f6d99307039a53e7d80 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.h +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.h @@ -217,6 +217,10 @@ #define I217_INBAND_CTRL_LINK_STAT_TX_TIMEOUT_MASK 0x3F00 #define I217_INBAND_CTRL_LINK_STAT_TX_TIMEOUT_SHIFT 8 +/* Low Power Idle GPIO Control */ +#define I217_LPI_GPIO_CTRL PHY_REG(772, 18) +#define I217_LPI_GPIO_CTRL_AUTO_EN_LPI 0x0800 + /* PHY Low Power Idle Control */ #define I82579_LPI_CTRL PHY_REG(772, 20) #define I82579_LPI_CTRL_100_ENABLE 0x2000