igb: Support to enable EEE on all eee_supported devices
Current implementation enables EEE on only i350 device. This patch enables
EEE on all eee_supported devices. Also, configured LPI clock to keep
running before EEE is enabled on i210 and i211 devices.
Signed-off-by: Akeem G. Abodunrin <akeem.g.abodunrin@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/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c
index ba994fb..ca4641e 100644
--- a/drivers/net/ethernet/intel/igb/e1000_82575.c
+++ b/drivers/net/ethernet/intel/igb/e1000_82575.c
@@ -2223,11 +2223,10 @@
s32 igb_set_eee_i350(struct e1000_hw *hw)
{
s32 ret_val = 0;
- u32 ipcnfg, eeer, ctrl_ext;
+ u32 ipcnfg, eeer;
- ctrl_ext = rd32(E1000_CTRL_EXT);
- if ((hw->mac.type != e1000_i350) ||
- (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK))
+ if ((hw->mac.type < e1000_i350) ||
+ (hw->phy.media_type != e1000_media_type_copper))
goto out;
ipcnfg = rd32(E1000_IPCNFG);
eeer = rd32(E1000_EEER);
@@ -2240,6 +2239,14 @@
E1000_EEER_RX_LPI_EN |
E1000_EEER_LPI_FC);
+ /* keep the LPI clock running before EEE is enabled */
+ if (hw->mac.type == e1000_i210 || hw->mac.type == e1000_i211) {
+ u32 eee_su;
+ eee_su = rd32(E1000_EEE_SU);
+ eee_su &= ~E1000_EEE_SU_LPI_CLK_STP;
+ wr32(E1000_EEE_SU, eee_su);
+ }
+
} else {
ipcnfg &= ~(E1000_IPCNFG_EEE_1G_AN |
E1000_IPCNFG_EEE_100M_AN);
@@ -2249,6 +2256,8 @@
}
wr32(E1000_IPCNFG, ipcnfg);
wr32(E1000_EEER, eeer);
+ rd32(E1000_IPCNFG);
+ rd32(E1000_EEER);
out:
return ret_val;