diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/e1000e/82571.c | 83 |
1 files changed, 73 insertions, 10 deletions
diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c index e57e4097ef1b..89a69035e538 100644 --- a/drivers/net/e1000e/82571.c +++ b/drivers/net/e1000e/82571.c @@ -1,7 +1,7 @@ /******************************************************************************* Intel PRO/1000 Linux driver - Copyright(c) 1999 - 2010 Intel Corporation. + Copyright(c) 1999 - 2011 Intel Corporation. This program is free software; you can redistribute it and/or modify it under the terms and conditions of the GNU General Public License, @@ -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; @@ -121,29 +125,36 @@ static s32 e1000_init_phy_params_82571(struct e1000_hw *hw) /* This can only be done after all function pointers are setup. */ ret_val = e1000_get_phy_id_82571(hw); + if (ret_val) { + e_dbg("Error getting PHY ID\n"); + return ret_val; + } /* Verify phy id */ switch (hw->mac.type) { case e1000_82571: case e1000_82572: if (phy->id != IGP01E1000_I_PHY_ID) - return -E1000_ERR_PHY; + ret_val = -E1000_ERR_PHY; break; case e1000_82573: if (phy->id != M88E1111_I_PHY_ID) - return -E1000_ERR_PHY; + ret_val = -E1000_ERR_PHY; break; case e1000_82574: case e1000_82583: if (phy->id != BME1000_E_PHY_ID_R2) - return -E1000_ERR_PHY; + ret_val = -E1000_ERR_PHY; break; default: - return -E1000_ERR_PHY; + ret_val = -E1000_ERR_PHY; break; } - return 0; + if (ret_val) + e_dbg("PHY ID unknown: type = 0x%08x\n", phy->id); + + return ret_val; } /** @@ -317,7 +328,7 @@ static s32 e1000_init_mac_params_82571(struct e1000_adapter *adapter) /* * Ensure that the inter-port SWSM.SMBI lock bit is clear before - * first NVM or PHY acess. This should be done for single-port + * first NVM or PHY access. This should be done for single-port * devices, and for one port only on dual-port devices so that * for those devices we can still use the SMBI lock to synchronize * inter-port accesses to the PHY & NVM. @@ -649,6 +660,58 @@ static void e1000_put_hw_semaphore_82574(struct e1000_hw *hw) } /** + * 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 * @@ -956,7 +1019,7 @@ static s32 e1000_set_d0_lplu_state_82571(struct e1000_hw *hw, bool active) **/ static s32 e1000_reset_hw_82571(struct e1000_hw *hw) { - u32 ctrl, ctrl_ext, icr; + u32 ctrl, ctrl_ext; s32 ret_val; /* @@ -1040,7 +1103,7 @@ static s32 e1000_reset_hw_82571(struct e1000_hw *hw) /* Clear any pending interrupt events. */ ew32(IMC, 0xffffffff); - icr = er32(ICR); + er32(ICR); if (hw->mac.type == e1000_82571) { /* Install any alternate MAC address into RAR0 */ @@ -1247,7 +1310,7 @@ static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw) * apply workaround for hardware errata documented in errata * docs Fixes issue where some error prone or unreliable PCIe * completions are occurring, particularly with ASPM enabled. - * Without fix, issue can cause tx timeouts. + * Without fix, issue can cause Tx timeouts. */ reg = er32(GCR2); reg |= 1; |