diff options
| author | Carolyn Wyborny <carolyn.wyborny@intel.com> | 2011-03-11 20:42:13 -0800 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-03-12 04:09:20 -0800 |
| commit | 09b068d45737abb49320ab25cb4ed2916017ace7 (patch) | |
| tree | 489c503a733de2f1d632e27ac331a6be4bd7f41f /drivers/net/igb/e1000_82575.c | |
| parent | 422e05d12af9c1063d57210074b4e6db36a0cf39 (diff) | |
igb: Add Energy Efficient Ethernet (EEE) for i350 devices.
This patch adds the EEE feature for i350 devices, enabled by default.
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>
Diffstat (limited to 'drivers/net/igb/e1000_82575.c')
| -rw-r--r-- | drivers/net/igb/e1000_82575.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/drivers/net/igb/e1000_82575.c b/drivers/net/igb/e1000_82575.c index 65c1833244f7..20d172aeb1c0 100644 --- a/drivers/net/igb/e1000_82575.c +++ b/drivers/net/igb/e1000_82575.c @@ -195,7 +195,11 @@ static s32 igb_get_invariants_82575(struct e1000_hw *hw) mac->arc_subsystem_valid = (rd32(E1000_FWSM) & E1000_FWSM_MODE_MASK) ? true : false; - + /* enable EEE on i350 parts */ + if (mac->type == e1000_i350) + dev_spec->eee_disable = false; + else + dev_spec->eee_disable = true; /* physical interface link setup */ mac->ops.setup_physical_interface = (hw->phy.media_type == e1000_media_type_copper) @@ -1754,6 +1758,46 @@ u16 igb_rxpbs_adjust_82580(u32 data) return ret_val; } +/** + * igb_set_eee_i350 - Enable/disable EEE support + * @hw: pointer to the HW structure + * + * Enable/disable EEE based on setting in dev_spec structure. + * + **/ +s32 igb_set_eee_i350(struct e1000_hw *hw) +{ + s32 ret_val = 0; + u32 ipcnfg, eeer, ctrl_ext; + + ctrl_ext = rd32(E1000_CTRL_EXT); + if ((hw->mac.type != e1000_i350) || + (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK)) + goto out; + ipcnfg = rd32(E1000_IPCNFG); + eeer = rd32(E1000_EEER); + + /* enable or disable per user setting */ + if (!(hw->dev_spec._82575.eee_disable)) { + ipcnfg |= (E1000_IPCNFG_EEE_1G_AN | + E1000_IPCNFG_EEE_100M_AN); + eeer |= (E1000_EEER_TX_LPI_EN | + E1000_EEER_RX_LPI_EN | + E1000_EEER_LPI_FC); + + } else { + ipcnfg &= ~(E1000_IPCNFG_EEE_1G_AN | + E1000_IPCNFG_EEE_100M_AN); + eeer &= ~(E1000_EEER_TX_LPI_EN | + E1000_EEER_RX_LPI_EN | + E1000_EEER_LPI_FC); + } + wr32(E1000_IPCNFG, ipcnfg); + wr32(E1000_EEER, eeer); +out: + + return ret_val; +} static struct e1000_mac_operations e1000_mac_ops_82575 = { .init_hw = igb_init_hw_82575, .check_for_link = igb_check_for_link_82575, |