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path: root/drivers/net/ethernet/intel/e1000e/ich8lan.c
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Diffstat (limited to 'drivers/net/ethernet/intel/e1000e/ich8lan.c')
-rw-r--r--drivers/net/ethernet/intel/e1000e/ich8lan.c38
1 files changed, 26 insertions, 12 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c
index 19e450a5bd31..f9e94be36e97 100644
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
@@ -222,11 +222,18 @@ out:
if (hw->mac.type >= e1000_pch_lpt) {
/* Only unforce SMBus if ME is not active */
if (!(er32(FWSM) & E1000_ICH_FWSM_FW_VALID)) {
+ /* Switching PHY interface always returns MDI error
+ * so disable retry mechanism to avoid wasting time
+ */
+ e1000e_disable_phy_retry(hw);
+
/* Unforce SMBus mode in PHY */
e1e_rphy_locked(hw, CV_SMB_CTRL, &phy_reg);
phy_reg &= ~CV_SMB_CTRL_FORCE_SMBUS;
e1e_wphy_locked(hw, CV_SMB_CTRL, phy_reg);
+ e1000e_enable_phy_retry(hw);
+
/* Unforce SMBus mode in MAC */
mac_reg = er32(CTRL_EXT);
mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;
@@ -310,6 +317,11 @@ static s32 e1000_init_phy_workarounds_pchlan(struct e1000_hw *hw)
goto out;
}
+ /* There is no guarantee that the PHY is accessible at this time
+ * so disable retry mechanism to avoid wasting time
+ */
+ e1000e_disable_phy_retry(hw);
+
/* The MAC-PHY interconnect may be in SMBus mode. If the PHY is
* inaccessible and resetting the PHY is not blocked, toggle the
* LANPHYPC Value bit to force the interconnect to PCIe mode.
@@ -380,6 +392,8 @@ static s32 e1000_init_phy_workarounds_pchlan(struct e1000_hw *hw)
break;
}
+ e1000e_enable_phy_retry(hw);
+
hw->phy.ops.release(hw);
if (!ret_val) {
@@ -449,6 +463,11 @@ static s32 e1000_init_phy_params_pchlan(struct e1000_hw *hw)
phy->id = e1000_phy_unknown;
+ if (hw->mac.type == e1000_pch_mtp) {
+ phy->retry_count = 2;
+ e1000e_enable_phy_retry(hw);
+ }
+
ret_val = e1000_init_phy_workarounds_pchlan(hw);
if (ret_val)
return ret_val;
@@ -1146,18 +1165,6 @@ s32 e1000_enable_ulp_lpt_lp(struct e1000_hw *hw, bool to_sx)
if (ret_val)
goto out;
- /* Force SMBus mode in PHY */
- ret_val = e1000_read_phy_reg_hv_locked(hw, CV_SMB_CTRL, &phy_reg);
- if (ret_val)
- goto release;
- phy_reg |= CV_SMB_CTRL_FORCE_SMBUS;
- e1000_write_phy_reg_hv_locked(hw, CV_SMB_CTRL, phy_reg);
-
- /* Force SMBus mode in MAC */
- mac_reg = er32(CTRL_EXT);
- mac_reg |= E1000_CTRL_EXT_FORCE_SMBUS;
- ew32(CTRL_EXT, mac_reg);
-
/* Si workaround for ULP entry flow on i127/rev6 h/w. Enable
* LPLU and disable Gig speed when entering ULP
*/
@@ -1313,6 +1320,11 @@ static s32 e1000_disable_ulp_lpt_lp(struct e1000_hw *hw, bool force)
/* Toggle LANPHYPC Value bit */
e1000_toggle_lanphypc_pch_lpt(hw);
+ /* Switching PHY interface always returns MDI error
+ * so disable retry mechanism to avoid wasting time
+ */
+ e1000e_disable_phy_retry(hw);
+
/* Unforce SMBus mode in PHY */
ret_val = e1000_read_phy_reg_hv_locked(hw, CV_SMB_CTRL, &phy_reg);
if (ret_val) {
@@ -1333,6 +1345,8 @@ static s32 e1000_disable_ulp_lpt_lp(struct e1000_hw *hw, bool force)
phy_reg &= ~CV_SMB_CTRL_FORCE_SMBUS;
e1000_write_phy_reg_hv_locked(hw, CV_SMB_CTRL, phy_reg);
+ e1000e_enable_phy_retry(hw);
+
/* Unforce SMBus mode in MAC */
mac_reg = er32(CTRL_EXT);
mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS;