Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net

1 files changed, 52 insertions, 13 deletions

diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c
index 4e36978b8fd8..54add27c8f76 100644
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
@@ -137,8 +137,9 @@
 #define HV_PM_CTRL              PHY_REG(770, 17)
 
 /* PHY Low Power Idle Control */
-#define I82579_LPI_CTRL                 PHY_REG(772, 20)
-#define I82579_LPI_CTRL_ENABLE_MASK     0x6000
+#define I82579_LPI_CTRL                         PHY_REG(772, 20)
+#define I82579_LPI_CTRL_ENABLE_MASK             0x6000
+#define I82579_LPI_CTRL_FORCE_PLL_LOCK_COUNT    0x80
 
 /* EMI Registers */
 #define I82579_EMI_ADDR         0x10
@@ -163,6 +164,11 @@
 #define HV_KMRN_MODE_CTRL      PHY_REG(769, 16)
 #define HV_KMRN_MDIO_SLOW      0x0400
 
+/* KMRN FIFO Control and Status */
+#define HV_KMRN_FIFO_CTRLSTA                  PHY_REG(770, 16)
+#define HV_KMRN_FIFO_CTRLSTA_PREAMBLE_MASK    0x7000
+#define HV_KMRN_FIFO_CTRLSTA_PREAMBLE_SHIFT   12
+
 /* ICH GbE Flash Hardware Sequencing Flash Status Register bit breakdown */
 /* Offset 04h HSFSTS */
 union ich8_hws_flash_status {
@@ -657,6 +663,7 @@ static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw)
         struct e1000_mac_info *mac = &hw->mac;
         s32 ret_val;
         bool link;
+        u16 phy_reg;
 
         /*
          * We only want to go out to the PHY registers to see if Auto-Neg
@@ -689,16 +696,35 @@ static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw)
 
         mac->get_link_status = false;
 
-        if (hw->phy.type == e1000_phy_82578) {
-                ret_val = e1000_link_stall_workaround_hv(hw);
-                if (ret_val)
-                        goto out;
-        }
-
-        if (hw->mac.type == e1000_pch2lan) {
+        switch (hw->mac.type) {
+        case e1000_pch2lan:
                 ret_val = e1000_k1_workaround_lv(hw);
                 if (ret_val)
                         goto out;
+                /* fall-thru */
+        case e1000_pchlan:
+                if (hw->phy.type == e1000_phy_82578) {
+                        ret_val = e1000_link_stall_workaround_hv(hw);
+                        if (ret_val)
+                                goto out;
+                }
+
+                /*
+                 * Workaround for PCHx parts in half-duplex:
+                 * Set the number of preambles removed from the packet
+                 * when it is passed from the PHY to the MAC to prevent
+                 * the MAC from misinterpreting the packet type.
+                 */
+                e1e_rphy(hw, HV_KMRN_FIFO_CTRLSTA, &phy_reg);
+                phy_reg &= ~HV_KMRN_FIFO_CTRLSTA_PREAMBLE_MASK;
+
+                if ((er32(STATUS) & E1000_STATUS_FD) != E1000_STATUS_FD)
+                        phy_reg |= (1 << HV_KMRN_FIFO_CTRLSTA_PREAMBLE_SHIFT);
+
+                e1e_wphy(hw, HV_KMRN_FIFO_CTRLSTA, phy_reg);
+                break;
+        default:
+                break;
         }
 
         /*
@@ -788,6 +814,11 @@ static s32 e1000_get_variants_ich8lan(struct e1000_adapter *adapter)
             (adapter->hw.phy.type == e1000_phy_igp_3))
                 adapter->flags |= FLAG_LSC_GIG_SPEED_DROP;
 
+        /* Enable workaround for 82579 w/ ME enabled */
+        if ((adapter->hw.mac.type == e1000_pch2lan) &&
+            (er32(FWSM) & E1000_ICH_FWSM_FW_VALID))
+                adapter->flags2 |= FLAG2_PCIM2PCI_ARBITER_WA;
+
         /* Disable EEE by default until IEEE802.3az spec is finalized */
         if (adapter->flags2 & FLAG2_HAS_EEE)
                 adapter->hw.dev_spec.ich8lan.eee_disable = true;
@@ -1355,7 +1386,7 @@ static s32 e1000_hv_phy_workarounds_ich8lan(struct e1000_hw *hw)
                         return ret_val;
 
                 /* Preamble tuning for SSC */
-                ret_val = e1e_wphy(hw, PHY_REG(770, 16), 0xA204);
+                ret_val = e1e_wphy(hw, HV_KMRN_FIFO_CTRLSTA, 0xA204);
                 if (ret_val)
                         return ret_val;
         }
@@ -1645,6 +1676,7 @@ static s32 e1000_k1_workaround_lv(struct e1000_hw *hw)
         s32 ret_val = 0;
         u16 status_reg = 0;
         u32 mac_reg;
+        u16 phy_reg;
 
         if (hw->mac.type != e1000_pch2lan)
                 goto out;
@@ -1659,12 +1691,19 @@ static s32 e1000_k1_workaround_lv(struct e1000_hw *hw)
                 mac_reg = er32(FEXTNVM4);
                 mac_reg &= ~E1000_FEXTNVM4_BEACON_DURATION_MASK;
 
-                if (status_reg & HV_M_STATUS_SPEED_1000)
+                ret_val = e1e_rphy(hw, I82579_LPI_CTRL, &phy_reg);
+                if (ret_val)
+                        goto out;
+
+                if (status_reg & HV_M_STATUS_SPEED_1000) {
                         mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_8USEC;
-                else
+                        phy_reg &= ~I82579_LPI_CTRL_FORCE_PLL_LOCK_COUNT;
+                } else {
                         mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_16USEC;
-
+                        phy_reg |= I82579_LPI_CTRL_FORCE_PLL_LOCK_COUNT;
+                }
                 ew32(FEXTNVM4, mac_reg);
+                ret_val = e1e_wphy(hw, I82579_LPI_CTRL, phy_reg);
         }
 
 out: