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>
diff --git a/drivers/net/igb/e1000_82575.c b/drivers/net/igb/e1000_82575.c
index 65c1833..20d172a 100644
--- a/drivers/net/igb/e1000_82575.c
+++ b/drivers/net/igb/e1000_82575.c
@@ -195,7 +195,11 @@
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 @@
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,