---

yaml
---
r: 263212
b: refs/heads/master
c: 1d2101a
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 63d635b21c00069b5ade7640bcbe8ab912dc65d1
+refs/heads/master: 1d2101a712b3b7281a19ff6d7bfc16c2ce9d3998

trunk/drivers/net/e1000e/ich8lan.c

@@ -163,6 +163,11 @@
 #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 +662,7 @@ 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 +695,35 @@ 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;
 	}
 
 	/*
@@ -1355,7 +1380,7 @@ 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;
 	}