From 77996d1d4c1cf0059f5c2d1cea9d5135ac1b8c91 Mon Sep 17 00:00:00 2001 From: Bruce Allan Date: Thu, 6 Jan 2011 14:29:53 +0000 Subject: e1000e: add custom set_d[0|3]_lplu_state function pointer for 82574 82574 needs to configure Low Power Link Up (or LPLU) differently than the other parts in the 8257x family supported by the driver. Signed-off-by: Bruce Allan Tested-by: Emil Tantilov Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/e1000e/82571.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) (limited to 'drivers/net/e1000e/82571.c') diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c index 11a273e4ba2..cb6c7b1c1fb 100644 --- a/drivers/net/e1000e/82571.c +++ b/drivers/net/e1000e/82571.c @@ -78,6 +78,8 @@ static void e1000_power_down_phy_copper_82571(struct e1000_hw *hw); static void e1000_put_hw_semaphore_82573(struct e1000_hw *hw); static s32 e1000_get_hw_semaphore_82574(struct e1000_hw *hw); static void e1000_put_hw_semaphore_82574(struct e1000_hw *hw); +static s32 e1000_set_d0_lplu_state_82574(struct e1000_hw *hw, bool active); +static s32 e1000_set_d3_lplu_state_82574(struct e1000_hw *hw, bool active); /** * e1000_init_phy_params_82571 - Init PHY func ptrs. @@ -113,6 +115,8 @@ static s32 e1000_init_phy_params_82571(struct e1000_hw *hw) phy->type = e1000_phy_bm; phy->ops.acquire = e1000_get_hw_semaphore_82574; phy->ops.release = e1000_put_hw_semaphore_82574; + phy->ops.set_d0_lplu_state = e1000_set_d0_lplu_state_82574; + phy->ops.set_d3_lplu_state = e1000_set_d3_lplu_state_82574; break; default: return -E1000_ERR_PHY; @@ -655,6 +659,58 @@ static void e1000_put_hw_semaphore_82574(struct e1000_hw *hw) mutex_unlock(&swflag_mutex); } +/** + * e1000_set_d0_lplu_state_82574 - Set Low Power Linkup D0 state + * @hw: pointer to the HW structure + * @active: true to enable LPLU, false to disable + * + * Sets the LPLU D0 state according to the active flag. + * LPLU will not be activated unless the + * device autonegotiation advertisement meets standards of + * either 10 or 10/100 or 10/100/1000 at all duplexes. + * This is a function pointer entry point only called by + * PHY setup routines. + **/ +static s32 e1000_set_d0_lplu_state_82574(struct e1000_hw *hw, bool active) +{ + u16 data = er32(POEMB); + + if (active) + data |= E1000_PHY_CTRL_D0A_LPLU; + else + data &= ~E1000_PHY_CTRL_D0A_LPLU; + + ew32(POEMB, data); + return 0; +} + +/** + * e1000_set_d3_lplu_state_82574 - Sets low power link up state for D3 + * @hw: pointer to the HW structure + * @active: boolean used to enable/disable lplu + * + * The low power link up (lplu) state is set to the power management level D3 + * when active is true, else clear lplu for D3. LPLU + * is used during Dx states where the power conservation is most important. + * During driver activity, SmartSpeed should be enabled so performance is + * maintained. + **/ +static s32 e1000_set_d3_lplu_state_82574(struct e1000_hw *hw, bool active) +{ + u16 data = er32(POEMB); + + if (!active) { + data &= ~E1000_PHY_CTRL_NOND0A_LPLU; + } else if ((hw->phy.autoneg_advertised == E1000_ALL_SPEED_DUPLEX) || + (hw->phy.autoneg_advertised == E1000_ALL_NOT_GIG) || + (hw->phy.autoneg_advertised == E1000_ALL_10_SPEED)) { + data |= E1000_PHY_CTRL_NOND0A_LPLU; + } + + ew32(POEMB, data); + return 0; +} + /** * e1000_acquire_nvm_82571 - Request for access to the EEPROM * @hw: pointer to the HW structure -- cgit v1.2.3-70-g09d2