1 files changed, 744 insertions, 143 deletions

diff --git a/sys/dev/ixgbe/ixgbe_phy.c b/sys/dev/ixgbe/ixgbe_phy.c
index cb237fd..5ac719c 100644
--- a/sys/dev/ixgbe/ixgbe_phy.c
+++ b/sys/dev/ixgbe/ixgbe_phy.c
@@ -1,6 +1,6 @@
 /******************************************************************************
 
-  Copyright (c) 2001-2013, Intel Corporation 
+  Copyright (c) 2001-2014, Intel Corporation 
   All rights reserved.
   
   Redistribution and use in source and binary forms, with or without 
@@ -46,11 +46,193 @@ static s32 ixgbe_clock_out_i2c_bit(struct ixgbe_hw *hw, bool data);
 static void ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl);
 static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl);
 static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data);
-static bool ixgbe_get_i2c_data(u32 *i2cctl);
+static bool ixgbe_get_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl);
 static s32 ixgbe_read_i2c_sff8472_generic(struct ixgbe_hw *hw, u8 byte_offset,
 					  u8 *sff8472_data);
 
 /**
+ * ixgbe_out_i2c_byte_ack - Send I2C byte with ack
+ * @hw: pointer to the hardware structure
+ * @byte: byte to send
+ *
+ * Returns an error code on error.
+ */
+static s32 ixgbe_out_i2c_byte_ack(struct ixgbe_hw *hw, u8 byte)
+{
+	s32 status;
+
+	status = ixgbe_clock_out_i2c_byte(hw, byte);
+	if (status)
+		return status;
+	return ixgbe_get_i2c_ack(hw);
+}
+
+/**
+ * ixgbe_in_i2c_byte_ack - Receive an I2C byte and send ack
+ * @hw: pointer to the hardware structure
+ * @byte: pointer to a u8 to receive the byte
+ *
+ * Returns an error code on error.
+ */
+static s32 ixgbe_in_i2c_byte_ack(struct ixgbe_hw *hw, u8 *byte)
+{
+	s32 status;
+
+	status = ixgbe_clock_in_i2c_byte(hw, byte);
+	if (status)
+		return status;
+	/* ACK */
+	return ixgbe_clock_out_i2c_bit(hw, FALSE);
+}
+
+/**
+ * ixgbe_ones_comp_byte_add - Perform one's complement addition
+ * @add1 - addend 1
+ * @add2 - addend 2
+ *
+ * Returns one's complement 8-bit sum.
+ */
+static u8 ixgbe_ones_comp_byte_add(u8 add1, u8 add2)
+{
+	u16 sum = add1 + add2;
+
+	sum = (sum & 0xFF) + (sum >> 8);
+	return sum & 0xFF;
+}
+
+/**
+ * ixgbe_read_i2c_combined_generic - Perform I2C read combined operation
+ * @hw: pointer to the hardware structure
+ * @addr: I2C bus address to read from
+ * @reg: I2C device register to read from
+ * @val: pointer to location to receive read value
+ *
+ * Returns an error code on error.
+ */
+static s32 ixgbe_read_i2c_combined_generic(struct ixgbe_hw *hw, u8 addr,
+					   u16 reg, u16 *val)
+{
+	u32 swfw_mask = hw->phy.phy_semaphore_mask;
+	int max_retry = 10;
+	int retry = 0;
+	u8 csum_byte;
+	u8 high_bits;
+	u8 low_bits;
+	u8 reg_high;
+	u8 csum;
+
+	reg_high = ((reg >> 7) & 0xFE) | 1;	/* Indicate read combined */
+	csum = ixgbe_ones_comp_byte_add(reg_high, reg & 0xFF);
+	csum = ~csum;
+	do {
+		if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask))
+			return IXGBE_ERR_SWFW_SYNC;
+		ixgbe_i2c_start(hw);
+		/* Device Address and write indication */
+		if (ixgbe_out_i2c_byte_ack(hw, addr))
+			goto fail;
+		/* Write bits 14:8 */
+		if (ixgbe_out_i2c_byte_ack(hw, reg_high))
+			goto fail;
+		/* Write bits 7:0 */
+		if (ixgbe_out_i2c_byte_ack(hw, reg & 0xFF))
+			goto fail;
+		/* Write csum */
+		if (ixgbe_out_i2c_byte_ack(hw, csum))
+			goto fail;
+		/* Re-start condition */
+		ixgbe_i2c_start(hw);
+		/* Device Address and read indication */
+		if (ixgbe_out_i2c_byte_ack(hw, addr | 1))
+			goto fail;
+		/* Get upper bits */
+		if (ixgbe_in_i2c_byte_ack(hw, &high_bits))
+			goto fail;
+		/* Get low bits */
+		if (ixgbe_in_i2c_byte_ack(hw, &low_bits))
+			goto fail;
+		/* Get csum */
+		if (ixgbe_clock_in_i2c_byte(hw, &csum_byte))
+			goto fail;
+		/* NACK */
+		if (ixgbe_clock_out_i2c_bit(hw, FALSE))
+			goto fail;
+		ixgbe_i2c_stop(hw);
+		hw->mac.ops.release_swfw_sync(hw, swfw_mask);
+		*val = (high_bits << 8) | low_bits;
+		return 0;
+
+fail:
+		ixgbe_i2c_bus_clear(hw);
+		hw->mac.ops.release_swfw_sync(hw, swfw_mask);
+		retry++;
+		if (retry < max_retry)
+			DEBUGOUT("I2C byte read combined error - Retrying.\n");
+		else
+			DEBUGOUT("I2C byte read combined error.\n");
+	} while (retry < max_retry);
+
+	return IXGBE_ERR_I2C;
+}
+
+/**
+ * ixgbe_write_i2c_combined_generic - Perform I2C write combined operation
+ * @hw: pointer to the hardware structure
+ * @addr: I2C bus address to write to
+ * @reg: I2C device register to write to
+ * @val: value to write
+ *
+ * Returns an error code on error.
+ */
+static s32 ixgbe_write_i2c_combined_generic(struct ixgbe_hw *hw,
+					    u8 addr, u16 reg, u16 val)
+{
+	int max_retry = 1;
+	int retry = 0;
+	u8 reg_high;
+	u8 csum;
+
+	reg_high = (reg >> 7) & 0xFE;	/* Indicate write combined */
+	csum = ixgbe_ones_comp_byte_add(reg_high, reg & 0xFF);
+	csum = ixgbe_ones_comp_byte_add(csum, val >> 8);
+	csum = ixgbe_ones_comp_byte_add(csum, val & 0xFF);
+	csum = ~csum;
+	do {
+		ixgbe_i2c_start(hw);
+		/* Device Address and write indication */
+		if (ixgbe_out_i2c_byte_ack(hw, addr))
+			goto fail;
+		/* Write bits 14:8 */
+		if (ixgbe_out_i2c_byte_ack(hw, reg_high))
+			goto fail;
+		/* Write bits 7:0 */
+		if (ixgbe_out_i2c_byte_ack(hw, reg & 0xFF))
+			goto fail;
+		/* Write data 15:8 */
+		if (ixgbe_out_i2c_byte_ack(hw, val >> 8))
+			goto fail;
+		/* Write data 7:0 */
+		if (ixgbe_out_i2c_byte_ack(hw, val & 0xFF))
+			goto fail;
+		/* Write csum */
+		if (ixgbe_out_i2c_byte_ack(hw, csum))
+			goto fail;
+		ixgbe_i2c_stop(hw);
+		return 0;
+
+fail:
+		ixgbe_i2c_bus_clear(hw);
+		retry++;
+		if (retry < max_retry)
+			DEBUGOUT("I2C byte write combined error - Retrying.\n");
+		else
+			DEBUGOUT("I2C byte write combined error.\n");
+	} while (retry < max_retry);
+
+	return IXGBE_ERR_I2C;
+}
+
+/**
  *  ixgbe_init_phy_ops_generic - Inits PHY function ptrs
  *  @hw: pointer to the hardware structure
  *
@@ -63,25 +245,27 @@ s32 ixgbe_init_phy_ops_generic(struct ixgbe_hw *hw)
 	DEBUGFUNC("ixgbe_init_phy_ops_generic");
 
 	/* PHY */
-	phy->ops.identify = &ixgbe_identify_phy_generic;
-	phy->ops.reset = &ixgbe_reset_phy_generic;
-	phy->ops.read_reg = &ixgbe_read_phy_reg_generic;
-	phy->ops.write_reg = &ixgbe_write_phy_reg_generic;
-	phy->ops.read_reg_mdi = &ixgbe_read_phy_reg_mdi;
-	phy->ops.write_reg_mdi = &ixgbe_write_phy_reg_mdi;
-	phy->ops.setup_link = &ixgbe_setup_phy_link_generic;
-	phy->ops.setup_link_speed = &ixgbe_setup_phy_link_speed_generic;
+	phy->ops.identify = ixgbe_identify_phy_generic;
+	phy->ops.reset = ixgbe_reset_phy_generic;
+	phy->ops.read_reg = ixgbe_read_phy_reg_generic;
+	phy->ops.write_reg = ixgbe_write_phy_reg_generic;
+	phy->ops.read_reg_mdi = ixgbe_read_phy_reg_mdi;
+	phy->ops.write_reg_mdi = ixgbe_write_phy_reg_mdi;
+	phy->ops.setup_link = ixgbe_setup_phy_link_generic;
+	phy->ops.setup_link_speed = ixgbe_setup_phy_link_speed_generic;
 	phy->ops.check_link = NULL;
 	phy->ops.get_firmware_version = ixgbe_get_phy_firmware_version_generic;
-	phy->ops.read_i2c_byte = &ixgbe_read_i2c_byte_generic;
-	phy->ops.write_i2c_byte = &ixgbe_write_i2c_byte_generic;
-	phy->ops.read_i2c_sff8472 = &ixgbe_read_i2c_sff8472_generic;
-	phy->ops.read_i2c_eeprom = &ixgbe_read_i2c_eeprom_generic;
-	phy->ops.write_i2c_eeprom = &ixgbe_write_i2c_eeprom_generic;
-	phy->ops.i2c_bus_clear = &ixgbe_i2c_bus_clear;
-	phy->ops.identify_sfp = &ixgbe_identify_module_generic;
+	phy->ops.read_i2c_byte = ixgbe_read_i2c_byte_generic;
+	phy->ops.write_i2c_byte = ixgbe_write_i2c_byte_generic;
+	phy->ops.read_i2c_sff8472 = ixgbe_read_i2c_sff8472_generic;
+	phy->ops.read_i2c_eeprom = ixgbe_read_i2c_eeprom_generic;
+	phy->ops.write_i2c_eeprom = ixgbe_write_i2c_eeprom_generic;
+	phy->ops.i2c_bus_clear = ixgbe_i2c_bus_clear;
+	phy->ops.identify_sfp = ixgbe_identify_module_generic;
 	phy->sfp_type = ixgbe_sfp_type_unknown;
-	phy->ops.check_overtemp = &ixgbe_tn_check_overtemp;
+	phy->ops.read_i2c_combined = ixgbe_read_i2c_combined_generic;
+	phy->ops.write_i2c_combined = ixgbe_write_i2c_combined_generic;
+	phy->ops.check_overtemp = ixgbe_tn_check_overtemp;
 	return IXGBE_SUCCESS;
 }
 
@@ -99,6 +283,13 @@ s32 ixgbe_identify_phy_generic(struct ixgbe_hw *hw)
 
 	DEBUGFUNC("ixgbe_identify_phy_generic");
 
+	if (!hw->phy.phy_semaphore_mask) {
+		if (hw->bus.lan_id)
+			hw->phy.phy_semaphore_mask = IXGBE_GSSR_PHY1_SM;
+		else
+			hw->phy.phy_semaphore_mask = IXGBE_GSSR_PHY0_SM;
+	}
+
 	if (hw->phy.type == ixgbe_phy_unknown) {
 		for (phy_addr = 0; phy_addr < IXGBE_MAX_PHY_ADDR; phy_addr++) {
 			if (ixgbe_validate_phy_addr(hw, phy_addr)) {
@@ -126,11 +317,13 @@ s32 ixgbe_identify_phy_generic(struct ixgbe_hw *hw)
 				break;
 			}
 		}
-		/* clear value if nothing found */
+
+		/* Certain media types do not have a phy so an address will not
+		 * be found and the code will take this path.  Caller has to
+		 * decide if it is an error or not.
+		 */
 		if (status != IXGBE_SUCCESS) {
 			hw->phy.addr = 0;
-			ERROR_REPORT1(IXGBE_ERROR_SOFTWARE,
-				     "Could not identify valid PHY address");
 		}
 	} else {
 		status = IXGBE_SUCCESS;
@@ -140,6 +333,35 @@ s32 ixgbe_identify_phy_generic(struct ixgbe_hw *hw)
 }
 
 /**
+ * ixgbe_check_reset_blocked - check status of MNG FW veto bit
+ * @hw: pointer to the hardware structure
+ *
+ * This function checks the MMNGC.MNG_VETO bit to see if there are
+ * any constraints on link from manageability.  For MAC's that don't
+ * have this bit just return faluse since the link can not be blocked
+ * via this method.
+ **/
+s32 ixgbe_check_reset_blocked(struct ixgbe_hw *hw)
+{
+	u32 mmngc;
+
+	DEBUGFUNC("ixgbe_check_reset_blocked");
+
+	/* If we don't have this bit, it can't be blocking */
+	if (hw->mac.type == ixgbe_mac_82598EB)
+		return FALSE;
+
+	mmngc = IXGBE_READ_REG(hw, IXGBE_MMNGC);
+	if (mmngc & IXGBE_MMNGC_MNG_VETO) {
+		ERROR_REPORT1(IXGBE_ERROR_SOFTWARE,
+			      "MNG_VETO bit detected.\n");
+		return TRUE;
+	}
+
+	return FALSE;
+}
+
+/**
  *  ixgbe_validate_phy_addr - Determines phy address is valid
  *  @hw: pointer to hardware structure
  *
@@ -204,6 +426,7 @@ enum ixgbe_phy_type ixgbe_get_phy_type_from_id(u32 phy_id)
 	case TN1010_PHY_ID:
 		phy_type = ixgbe_phy_tn;
 		break;
+	case X550_PHY_ID:
 	case X540_PHY_ID:
 		phy_type = ixgbe_phy_aq;
 		break;
@@ -213,6 +436,9 @@ enum ixgbe_phy_type ixgbe_get_phy_type_from_id(u32 phy_id)
 	case ATH_PHY_ID:
 		phy_type = ixgbe_phy_nl;
 		break;
+	case X557_PHY_ID:
+		phy_type = ixgbe_phy_x550em_ext_t;
+		break;
 	default:
 		phy_type = ixgbe_phy_unknown;
 		break;
@@ -245,6 +471,10 @@ s32 ixgbe_reset_phy_generic(struct ixgbe_hw *hw)
 	    (IXGBE_ERR_OVERTEMP == hw->phy.ops.check_overtemp(hw)))
 		goto out;
 
+	/* Blocked by MNG FW so bail */
+	if (ixgbe_check_reset_blocked(hw))
+		goto out;
+
 	/*
 	 * Perform soft PHY reset to the PHY_XS.
 	 * This will cause a soft reset to the PHY
@@ -368,15 +598,10 @@ s32 ixgbe_read_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr,
 			       u32 device_type, u16 *phy_data)
 {
 	s32 status;
-	u16 gssr;
+	u32 gssr = hw->phy.phy_semaphore_mask;
 
 	DEBUGFUNC("ixgbe_read_phy_reg_generic");
 
-	if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)
-		gssr = IXGBE_GSSR_PHY1_SM;
-	else
-		gssr = IXGBE_GSSR_PHY0_SM;
-
 	if (hw->mac.ops.acquire_swfw_sync(hw, gssr) == IXGBE_SUCCESS) {
 		status = ixgbe_read_phy_reg_mdi(hw, reg_addr, device_type,
 						phy_data);
@@ -474,15 +699,10 @@ s32 ixgbe_write_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr,
 				u32 device_type, u16 phy_data)
 {
 	s32 status;
-	u16 gssr;
+	u32 gssr = hw->phy.phy_semaphore_mask;
 
 	DEBUGFUNC("ixgbe_write_phy_reg_generic");
 
-	if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)
-		gssr = IXGBE_GSSR_PHY1_SM;
-	else
-		gssr = IXGBE_GSSR_PHY0_SM;
-
 	if (hw->mac.ops.acquire_swfw_sync(hw, gssr) == IXGBE_SUCCESS) {
 		status = ixgbe_write_phy_reg_mdi(hw, reg_addr, device_type,
 						 phy_data);
@@ -495,16 +715,14 @@ s32 ixgbe_write_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr,
 }
 
 /**
- *  ixgbe_setup_phy_link_generic - Set and restart autoneg
+ *  ixgbe_setup_phy_link_generic - Set and restart auto-neg
  *  @hw: pointer to hardware structure
  *
- *  Restart autonegotiation and PHY and waits for completion.
+ *  Restart auto-negotiation and PHY and waits for completion.
  **/
 s32 ixgbe_setup_phy_link_generic(struct ixgbe_hw *hw)
 {
 	s32 status = IXGBE_SUCCESS;
-	u32 time_out;
-	u32 max_time_out = 10;
 	u16 autoneg_reg = IXGBE_MII_AUTONEG_REG;
 	bool autoneg = FALSE;
 	ixgbe_link_speed speed;
@@ -528,6 +746,44 @@ s32 ixgbe_setup_phy_link_generic(struct ixgbe_hw *hw)
 				      autoneg_reg);
 	}
 
+	if (hw->mac.type == ixgbe_mac_X550) {
+		if (speed & IXGBE_LINK_SPEED_5GB_FULL) {
+			/* Set or unset auto-negotiation 1G advertisement */
+			hw->phy.ops.read_reg(hw,
+				IXGBE_MII_AUTONEG_VENDOR_PROVISION_1_REG,
+				IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
+				&autoneg_reg);
+
+			autoneg_reg &= ~IXGBE_MII_5GBASE_T_ADVERTISE;
+			if (hw->phy.autoneg_advertised &
+			     IXGBE_LINK_SPEED_5GB_FULL)
+				autoneg_reg |= IXGBE_MII_5GBASE_T_ADVERTISE;
+
+			hw->phy.ops.write_reg(hw,
+				IXGBE_MII_AUTONEG_VENDOR_PROVISION_1_REG,
+				IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
+				autoneg_reg);
+		}
+
+		if (speed & IXGBE_LINK_SPEED_2_5GB_FULL) {
+			/* Set or unset auto-negotiation 1G advertisement */
+			hw->phy.ops.read_reg(hw,
+				IXGBE_MII_AUTONEG_VENDOR_PROVISION_1_REG,
+				IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
+				&autoneg_reg);
+
+			autoneg_reg &= ~IXGBE_MII_2_5GBASE_T_ADVERTISE;
+			if (hw->phy.autoneg_advertised &
+			    IXGBE_LINK_SPEED_2_5GB_FULL)
+				autoneg_reg |= IXGBE_MII_2_5GBASE_T_ADVERTISE;
+
+			hw->phy.ops.write_reg(hw,
+				IXGBE_MII_AUTONEG_VENDOR_PROVISION_1_REG,
+				IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
+				autoneg_reg);
+		}
+	}
+
 	if (speed & IXGBE_LINK_SPEED_1GB_FULL) {
 		/* Set or unset auto-negotiation 1G advertisement */
 		hw->phy.ops.read_reg(hw,
@@ -561,7 +817,11 @@ s32 ixgbe_setup_phy_link_generic(struct ixgbe_hw *hw)
 				      autoneg_reg);
 	}
 
-	/* Restart PHY autonegotiation and wait for completion */
+	/* Blocked by MNG FW so don't reset PHY */
+	if (ixgbe_check_reset_blocked(hw))
+		return status;
+
+	/* Restart PHY auto-negotiation. */
 	hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_CONTROL,
 			     IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &autoneg_reg);
 
@@ -570,25 +830,6 @@ s32 ixgbe_setup_phy_link_generic(struct ixgbe_hw *hw)
 	hw->phy.ops.write_reg(hw, IXGBE_MDIO_AUTO_NEG_CONTROL,
 			      IXGBE_MDIO_AUTO_NEG_DEV_TYPE, autoneg_reg);
 
-	/* Wait for autonegotiation to finish */
-	for (time_out = 0; time_out < max_time_out; time_out++) {
-		usec_delay(10);
-		/* Restart PHY autonegotiation and wait for completion */
-		status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_STATUS,
-					      IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
-					      &autoneg_reg);
-
-		autoneg_reg &= IXGBE_MII_AUTONEG_COMPLETE;
-		if (autoneg_reg == IXGBE_MII_AUTONEG_COMPLETE)
-			break;
-	}
-
-	if (time_out == max_time_out) {
-		status = IXGBE_ERR_LINK_SETUP;
-		ERROR_REPORT1(IXGBE_ERROR_POLLING,
-			     "PHY autonegotiation time out");
-	}
-
 	return status;
 }
 
@@ -614,6 +855,12 @@ s32 ixgbe_setup_phy_link_speed_generic(struct ixgbe_hw *hw,
 	if (speed & IXGBE_LINK_SPEED_10GB_FULL)
 		hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL;
 
+	if (speed & IXGBE_LINK_SPEED_5GB_FULL)
+		hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_5GB_FULL;
+
+	if (speed & IXGBE_LINK_SPEED_2_5GB_FULL)
+		hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_2_5GB_FULL;
+
 	if (speed & IXGBE_LINK_SPEED_1GB_FULL)
 		hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL;
 
@@ -632,13 +879,14 @@ s32 ixgbe_setup_phy_link_speed_generic(struct ixgbe_hw *hw,
  *  @speed: pointer to link speed
  *  @autoneg: boolean auto-negotiation value
  *
- *  Determines the link capabilities by reading the AUTOC register.
+ *  Determines the supported link capabilities by reading the PHY auto
+ *  negotiation register.
  **/
 s32 ixgbe_get_copper_link_capabilities_generic(struct ixgbe_hw *hw,
 					       ixgbe_link_speed *speed,
 					       bool *autoneg)
 {
-	s32 status = IXGBE_ERR_LINK_SETUP;
+	s32 status;
 	u16 speed_ability;
 
 	DEBUGFUNC("ixgbe_get_copper_link_capabilities_generic");
@@ -659,6 +907,15 @@ s32 ixgbe_get_copper_link_capabilities_generic(struct ixgbe_hw *hw,
 			*speed |= IXGBE_LINK_SPEED_100_FULL;
 	}
 
+	/* Internal PHY does not support 100 Mbps */
+	if (hw->mac.type == ixgbe_mac_X550EM_x)
+		*speed &= ~IXGBE_LINK_SPEED_100_FULL;
+
+	if (hw->mac.type == ixgbe_mac_X550) {
+		*speed |= IXGBE_LINK_SPEED_2_5GB_FULL;
+		*speed |= IXGBE_LINK_SPEED_5GB_FULL;
+	}
+
 	return status;
 }
 
@@ -712,16 +969,14 @@ s32 ixgbe_check_phy_link_tnx(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
 }
 
 /**
- *	ixgbe_setup_phy_link_tnx - Set and restart autoneg
+ *	ixgbe_setup_phy_link_tnx - Set and restart auto-neg
  *	@hw: pointer to hardware structure
  *
- *	Restart autonegotiation and PHY and waits for completion.
+ *	Restart auto-negotiation and PHY and waits for completion.
  **/
 s32 ixgbe_setup_phy_link_tnx(struct ixgbe_hw *hw)
 {
 	s32 status = IXGBE_SUCCESS;
-	u32 time_out;
-	u32 max_time_out = 10;
 	u16 autoneg_reg = IXGBE_MII_AUTONEG_REG;
 	bool autoneg = FALSE;
 	ixgbe_link_speed speed;
@@ -775,7 +1030,11 @@ s32 ixgbe_setup_phy_link_tnx(struct ixgbe_hw *hw)
 				      autoneg_reg);
 	}
 
-	/* Restart PHY autonegotiation and wait for completion */
+	/* Blocked by MNG FW so don't reset PHY */
+	if (ixgbe_check_reset_blocked(hw))
+		return status;
+
+	/* Restart PHY auto-negotiation. */
 	hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_CONTROL,
 			     IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &autoneg_reg);
 
@@ -784,24 +1043,6 @@ s32 ixgbe_setup_phy_link_tnx(struct ixgbe_hw *hw)
 	hw->phy.ops.write_reg(hw, IXGBE_MDIO_AUTO_NEG_CONTROL,
 			      IXGBE_MDIO_AUTO_NEG_DEV_TYPE, autoneg_reg);
 
-	/* Wait for autonegotiation to finish */
-	for (time_out = 0; time_out < max_time_out; time_out++) {
-		usec_delay(10);
-		/* Restart PHY autonegotiation and wait for completion */
-		status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_STATUS,
-					      IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
-					      &autoneg_reg);
-
-		autoneg_reg &= IXGBE_MII_AUTONEG_COMPLETE;
-		if (autoneg_reg == IXGBE_MII_AUTONEG_COMPLETE)
-			break;
-	}
-
-	if (time_out == max_time_out) {
-		status = IXGBE_ERR_LINK_SETUP;
-		DEBUGOUT("ixgbe_setup_phy_link_tnx: time out");
-	}
-
 	return status;
 }
 
@@ -813,7 +1054,7 @@ s32 ixgbe_setup_phy_link_tnx(struct ixgbe_hw *hw)
 s32 ixgbe_get_phy_firmware_version_tnx(struct ixgbe_hw *hw,
 				       u16 *firmware_version)
 {
-	s32 status = IXGBE_SUCCESS;
+	s32 status;
 
 	DEBUGFUNC("ixgbe_get_phy_firmware_version_tnx");
 
@@ -832,7 +1073,7 @@ s32 ixgbe_get_phy_firmware_version_tnx(struct ixgbe_hw *hw,
 s32 ixgbe_get_phy_firmware_version_generic(struct ixgbe_hw *hw,
 					   u16 *firmware_version)
 {
-	s32 status = IXGBE_SUCCESS;
+	s32 status;
 
 	DEBUGFUNC("ixgbe_get_phy_firmware_version_generic");
 
@@ -858,6 +1099,10 @@ s32 ixgbe_reset_phy_nl(struct ixgbe_hw *hw)
 
 	DEBUGFUNC("ixgbe_reset_phy_nl");
 
+	/* Blocked by MNG FW so bail */
+	if (ixgbe_check_reset_blocked(hw))
+		goto out;
+
 	hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_XS_CONTROL,
 			     IXGBE_MDIO_PHY_XS_DEV_TYPE, &phy_data);
 
@@ -972,6 +1217,9 @@ s32 ixgbe_identify_module_generic(struct ixgbe_hw *hw)
 		status = ixgbe_identify_sfp_module_generic(hw);
 		break;
 
+	case ixgbe_media_type_fiber_qsfp:
+		status = ixgbe_identify_qsfp_module_generic(hw);
+		break;
 
 	default:
 		hw->phy.sfp_type = ixgbe_sfp_type_not_present;
@@ -1009,6 +1257,9 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
 		goto out;
 	}
 
+	/* LAN ID is needed for I2C access */
+	hw->mac.ops.set_lan_id(hw);
+
 	status = hw->phy.ops.read_i2c_eeprom(hw,
 					     IXGBE_SFF_IDENTIFIER,
 					     &identifier);
@@ -1016,9 +1267,6 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
 	if (status != IXGBE_SUCCESS)
 		goto err_read_i2c_eeprom;
 
-	/* LAN ID is needed for sfp_type determination */
-	hw->mac.ops.set_lan_id(hw);
-
 	if (identifier != IXGBE_SFF_IDENTIFIER_SFP) {
 		hw->phy.type = ixgbe_phy_sfp_unsupported;
 		status = IXGBE_ERR_SFP_NOT_SUPPORTED;
@@ -1068,7 +1316,7 @@ s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw)
 				hw->phy.sfp_type = ixgbe_sfp_type_lr;
 			else
 				hw->phy.sfp_type = ixgbe_sfp_type_unknown;
-		} else if (hw->mac.type == ixgbe_mac_82599EB) {
+		} else {
 			if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) {
 				if (hw->bus.lan_id == 0)
 					hw->phy.sfp_type =
@@ -1261,6 +1509,266 @@ err_read_i2c_eeprom:
 	return IXGBE_ERR_SFP_NOT_PRESENT;
 }
 
+/**
+ *  ixgbe_get_supported_phy_sfp_layer_generic - Returns physical layer type
+ *  @hw: pointer to hardware structure
+ *
+ *  Determines physical layer capabilities of the current SFP.
+ */
+s32 ixgbe_get_supported_phy_sfp_layer_generic(struct ixgbe_hw *hw)
+{
+	u32 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;
+	u8 comp_codes_10g = 0;
+	u8 comp_codes_1g = 0;
+
+	DEBUGFUNC("ixgbe_get_supported_phy_sfp_layer_generic");
+
+	hw->phy.ops.identify_sfp(hw);
+	if (hw->phy.sfp_type == ixgbe_sfp_type_not_present)
+		return physical_layer;
+
+	switch (hw->phy.type) {
+	case ixgbe_phy_sfp_passive_tyco:
+	case ixgbe_phy_sfp_passive_unknown:
+	case ixgbe_phy_qsfp_passive_unknown:
+		physical_layer = IXGBE_PHYSICAL_LAYER_SFP_PLUS_CU;
+		break;
+	case ixgbe_phy_sfp_ftl_active:
+	case ixgbe_phy_sfp_active_unknown:
+	case ixgbe_phy_qsfp_active_unknown:
+		physical_layer = IXGBE_PHYSICAL_LAYER_SFP_ACTIVE_DA;
+		break;
+	case ixgbe_phy_sfp_avago:
+	case ixgbe_phy_sfp_ftl:
+	case ixgbe_phy_sfp_intel:
+	case ixgbe_phy_sfp_unknown:
+		hw->phy.ops.read_i2c_eeprom(hw,
+		      IXGBE_SFF_1GBE_COMP_CODES, &comp_codes_1g);
+		hw->phy.ops.read_i2c_eeprom(hw,
+		      IXGBE_SFF_10GBE_COMP_CODES, &comp_codes_10g);
+		if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)
+			physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_SR;
+		else if (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE)
+			physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_LR;
+		else if (comp_codes_1g & IXGBE_SFF_1GBASET_CAPABLE)
+			physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_T;
+		else if (comp_codes_1g & IXGBE_SFF_1GBASESX_CAPABLE)
+			physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_SX;
+		break;
+	case ixgbe_phy_qsfp_intel:
+	case ixgbe_phy_qsfp_unknown:
+		hw->phy.ops.read_i2c_eeprom(hw,
+		      IXGBE_SFF_QSFP_10GBE_COMP, &comp_codes_10g);
+		if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)
+			physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_SR;
+		else if (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE)
+			physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_LR;
+		break;
+	default:
+		break;
+	}
+
+	return physical_layer;
+}
+
+/**
+ *  ixgbe_identify_qsfp_module_generic - Identifies QSFP modules
+ *  @hw: pointer to hardware structure
+ *
+ *  Searches for and identifies the QSFP module and assigns appropriate PHY type
+ **/
+s32 ixgbe_identify_qsfp_module_generic(struct ixgbe_hw *hw)
+{
+	s32 status = IXGBE_ERR_PHY_ADDR_INVALID;
+	u32 vendor_oui = 0;
+	enum ixgbe_sfp_type stored_sfp_type = hw->phy.sfp_type;
+	u8 identifier = 0;
+	u8 comp_codes_1g = 0;
+	u8 comp_codes_10g = 0;
+	u8 oui_bytes[3] = {0, 0, 0};
+	u16 enforce_sfp = 0;
+	u8 connector = 0;
+	u8 cable_length = 0;
+	u8 device_tech = 0;
+	bool active_cable = FALSE;
+
+	DEBUGFUNC("ixgbe_identify_qsfp_module_generic");
+
+	if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_fiber_qsfp) {
+		hw->phy.sfp_type = ixgbe_sfp_type_not_present;
+		status = IXGBE_ERR_SFP_NOT_PRESENT;
+		goto out;
+	}
+
+	status = hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_IDENTIFIER,
+					     &identifier);
+
+	if (status != IXGBE_SUCCESS)
+		goto err_read_i2c_eeprom;
+
+	if (identifier != IXGBE_SFF_IDENTIFIER_QSFP_PLUS) {
+		hw->phy.type = ixgbe_phy_sfp_unsupported;
+		status = IXGBE_ERR_SFP_NOT_SUPPORTED;
+		goto out;
+	}
+
+	hw->phy.id = identifier;
+
+	/* LAN ID is needed for sfp_type determination */
+	hw->mac.ops.set_lan_id(hw);
+
+	status = hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_QSFP_10GBE_COMP,
+					     &comp_codes_10g);
+
+	if (status != IXGBE_SUCCESS)
+		goto err_read_i2c_eeprom;
+
+	status = hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_QSFP_1GBE_COMP,
+					     &comp_codes_1g);
+
+	if (status != IXGBE_SUCCESS)
+		goto err_read_i2c_eeprom;
+
+	if (comp_codes_10g & IXGBE_SFF_QSFP_DA_PASSIVE_CABLE) {
+		hw->phy.type = ixgbe_phy_qsfp_passive_unknown;
+		if (hw->bus.lan_id == 0)
+			hw->phy.sfp_type = ixgbe_sfp_type_da_cu_core0;
+		else
+			hw->phy.sfp_type = ixgbe_sfp_type_da_cu_core1;
+	} else if (comp_codes_10g & (IXGBE_SFF_10GBASESR_CAPABLE |
+				     IXGBE_SFF_10GBASELR_CAPABLE)) {
+		if (hw->bus.lan_id == 0)
+			hw->phy.sfp_type = ixgbe_sfp_type_srlr_core0;
+		else
+			hw->phy.sfp_type = ixgbe_sfp_type_srlr_core1;
+	} else {
+		if (comp_codes_10g & IXGBE_SFF_QSFP_DA_ACTIVE_CABLE)
+			active_cable = TRUE;
+
+		if (!active_cable) {
+			/* check for active DA cables that pre-date
+			 * SFF-8436 v3.6 */
+			hw->phy.ops.read_i2c_eeprom(hw,
+					IXGBE_SFF_QSFP_CONNECTOR,
+					&connector);
+
+			hw->phy.ops.read_i2c_eeprom(hw,
+					IXGBE_SFF_QSFP_CABLE_LENGTH,
+					&cable_length);
+
+			hw->phy.ops.read_i2c_eeprom(hw,
+					IXGBE_SFF_QSFP_DEVICE_TECH,
+					&device_tech);
+
+			if ((connector ==
+				     IXGBE_SFF_QSFP_CONNECTOR_NOT_SEPARABLE) &&
+			    (cable_length > 0) &&
+			    ((device_tech >> 4) ==
+				     IXGBE_SFF_QSFP_TRANSMITER_850NM_VCSEL))
+				active_cable = TRUE;
+		}
+
+		if (active_cable) {
+			hw->phy.type = ixgbe_phy_qsfp_active_unknown;
+			if (hw->bus.lan_id == 0)
+				hw->phy.sfp_type =
+						ixgbe_sfp_type_da_act_lmt_core0;
+			else
+				hw->phy.sfp_type =
+						ixgbe_sfp_type_da_act_lmt_core1;
+		} else {
+			/* unsupported module type */
+			hw->phy.type = ixgbe_phy_sfp_unsupported;
+			status = IXGBE_ERR_SFP_NOT_SUPPORTED;
+			goto out;
+		}
+	}
+
+	if (hw->phy.sfp_type != stored_sfp_type)
+		hw->phy.sfp_setup_needed = TRUE;
+
+	/* Determine if the QSFP+ PHY is dual speed or not. */
+	hw->phy.multispeed_fiber = FALSE;
+	if (((comp_codes_1g & IXGBE_SFF_1GBASESX_CAPABLE) &&
+	   (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)) ||
+	   ((comp_codes_1g & IXGBE_SFF_1GBASELX_CAPABLE) &&
+	   (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE)))
+		hw->phy.multispeed_fiber = TRUE;
+
+	/* Determine PHY vendor for optical modules */
+	if (comp_codes_10g & (IXGBE_SFF_10GBASESR_CAPABLE |
+			      IXGBE_SFF_10GBASELR_CAPABLE))  {
+		status = hw->phy.ops.read_i2c_eeprom(hw,
+					    IXGBE_SFF_QSFP_VENDOR_OUI_BYTE0,
+					    &oui_bytes[0]);
+
+		if (status != IXGBE_SUCCESS)
+			goto err_read_i2c_eeprom;
+
+		status = hw->phy.ops.read_i2c_eeprom(hw,
+					    IXGBE_SFF_QSFP_VENDOR_OUI_BYTE1,
+					    &oui_bytes[1]);
+
+		if (status != IXGBE_SUCCESS)
+			goto err_read_i2c_eeprom;
+
+		status = hw->phy.ops.read_i2c_eeprom(hw,
+					    IXGBE_SFF_QSFP_VENDOR_OUI_BYTE2,
+					    &oui_bytes[2]);
+
+		if (status != IXGBE_SUCCESS)
+			goto err_read_i2c_eeprom;
+
+		vendor_oui =
+		  ((oui_bytes[0] << IXGBE_SFF_VENDOR_OUI_BYTE0_SHIFT) |
+		   (oui_bytes[1] << IXGBE_SFF_VENDOR_OUI_BYTE1_SHIFT) |
+		   (oui_bytes[2] << IXGBE_SFF_VENDOR_OUI_BYTE2_SHIFT));
+
+		if (vendor_oui == IXGBE_SFF_VENDOR_OUI_INTEL)
+			hw->phy.type = ixgbe_phy_qsfp_intel;
+		else
+			hw->phy.type = ixgbe_phy_qsfp_unknown;
+
+		ixgbe_get_device_caps(hw, &enforce_sfp);
+		if (!(enforce_sfp & IXGBE_DEVICE_CAPS_ALLOW_ANY_SFP)) {
+			/* Make sure we're a supported PHY type */
+			if (hw->phy.type == ixgbe_phy_qsfp_intel) {
+				status = IXGBE_SUCCESS;
+			} else {
+				if (hw->allow_unsupported_sfp == TRUE) {
+					EWARN(hw, "WARNING: Intel (R) Network "
+					      "Connections are quality tested "
+					      "using Intel (R) Ethernet Optics."
+					      " Using untested modules is not "
+					      "supported and may cause unstable"
+					      " operation or damage to the "
+					      "module or the adapter. Intel "
+					      "Corporation is not responsible "
+					      "for any harm caused by using "
+					      "untested modules.\n", status);
+					status = IXGBE_SUCCESS;
+				} else {
+					DEBUGOUT("QSFP module not supported\n");
+					hw->phy.type =
+						ixgbe_phy_sfp_unsupported;
+					status = IXGBE_ERR_SFP_NOT_SUPPORTED;
+				}
+			}
+		} else {
+			status = IXGBE_SUCCESS;
+		}
+	}
+
+out:
+	return status;
+
+err_read_i2c_eeprom:
+	hw->phy.sfp_type = ixgbe_sfp_type_not_present;
+	hw->phy.id = 0;
+	hw->phy.type = ixgbe_phy_unknown;
+
+	return IXGBE_ERR_SFP_NOT_PRESENT;
+}
 
 
 /**
@@ -1409,6 +1917,21 @@ s32 ixgbe_write_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset,
 }
 
 /**
+ * ixgbe_is_sfp_probe - Returns TRUE if SFP is being detected
+ * @hw: pointer to hardware structure
+ * @offset: eeprom offset to be read
+ * @addr: I2C address to be read
+ */
+static bool ixgbe_is_sfp_probe(struct ixgbe_hw *hw, u8 offset, u8 addr)
+{
+	if (addr == IXGBE_I2C_EEPROM_DEV_ADDR &&
+	    offset == IXGBE_SFF_IDENTIFIER &&
+	    hw->phy.sfp_type == ixgbe_sfp_type_not_present)
+		return TRUE;
+	return FALSE;
+}
+
+/**
  *  ixgbe_read_i2c_byte_generic - Reads 8 bit word over I2C
  *  @hw: pointer to hardware structure
  *  @byte_offset: byte offset to read
@@ -1420,26 +1943,21 @@ s32 ixgbe_write_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset,
 s32 ixgbe_read_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset,
 				u8 dev_addr, u8 *data)
 {
-	s32 status = IXGBE_SUCCESS;
+	s32 status;
 	u32 max_retry = 10;
 	u32 retry = 0;
-	u16 swfw_mask = 0;
+	u32 swfw_mask = hw->phy.phy_semaphore_mask;
 	bool nack = 1;
 	*data = 0;
 
 	DEBUGFUNC("ixgbe_read_i2c_byte_generic");
 
-	if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)
-		swfw_mask = IXGBE_GSSR_PHY1_SM;
-	else
-		swfw_mask = IXGBE_GSSR_PHY0_SM;
+	if (ixgbe_is_sfp_probe(hw, byte_offset, dev_addr))
+		max_retry = IXGBE_SFP_DETECT_RETRIES;
 
 	do {
-		if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask)
-		    != IXGBE_SUCCESS) {
-			status = IXGBE_ERR_SWFW_SYNC;
-			goto read_byte_out;
-		}
+		if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask))
+			return IXGBE_ERR_SWFW_SYNC;
 
 		ixgbe_i2c_start(hw);
 
@@ -1480,7 +1998,8 @@ s32 ixgbe_read_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset,
 			goto fail;
 
 		ixgbe_i2c_stop(hw);
-		break;
+		hw->mac.ops.release_swfw_sync(hw, swfw_mask);
+		return IXGBE_SUCCESS;
 
 fail:
 		ixgbe_i2c_bus_clear(hw);
@@ -1494,9 +2013,6 @@ fail:
 
 	} while (retry < max_retry);
 
-	hw->mac.ops.release_swfw_sync(hw, swfw_mask);
-
-read_byte_out:
 	return status;
 }
 
@@ -1515,15 +2031,10 @@ s32 ixgbe_write_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset,
 	s32 status = IXGBE_SUCCESS;
 	u32 max_retry = 1;
 	u32 retry = 0;
-	u16 swfw_mask = 0;
+	u32 swfw_mask = hw->phy.phy_semaphore_mask;
 
 	DEBUGFUNC("ixgbe_write_i2c_byte_generic");
 
-	if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)
-		swfw_mask = IXGBE_GSSR_PHY1_SM;
-	else
-		swfw_mask = IXGBE_GSSR_PHY0_SM;
-
 	if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask) != IXGBE_SUCCESS) {
 		status = IXGBE_ERR_SWFW_SYNC;
 		goto write_byte_out;
@@ -1557,7 +2068,8 @@ s32 ixgbe_write_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset,
 			goto fail;
 
 		ixgbe_i2c_stop(hw);
-		break;
+		hw->mac.ops.release_swfw_sync(hw, swfw_mask);
+		return IXGBE_SUCCESS;
 
 fail:
 		ixgbe_i2c_bus_clear(hw);
@@ -1579,13 +2091,16 @@ write_byte_out:
  *  @hw: pointer to hardware structure
  *
  *  Sets I2C start condition (High -> Low on SDA while SCL is High)
+ *  Set bit-bang mode on X550 hardware.
  **/
 static void ixgbe_i2c_start(struct ixgbe_hw *hw)
 {
-	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
+	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));
 
 	DEBUGFUNC("ixgbe_i2c_start");
 
+	i2cctl |= IXGBE_I2C_BB_EN_BY_MAC(hw);
+
 	/* Start condition must begin with data and clock high */
 	ixgbe_set_i2c_data(hw, &i2cctl, 1);
 	ixgbe_raise_i2c_clk(hw, &i2cctl);
@@ -1610,10 +2125,15 @@ static void ixgbe_i2c_start(struct ixgbe_hw *hw)
  *  @hw: pointer to hardware structure
  *
  *  Sets I2C stop condition (Low -> High on SDA while SCL is High)
+ *  Disables bit-bang mode and negates data output enable on X550
+ *  hardware.
  **/
 static void ixgbe_i2c_stop(struct ixgbe_hw *hw)
 {
-	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
+	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));
+	u32 data_oe_bit = IXGBE_I2C_DATA_OE_N_EN_BY_MAC(hw);
+	u32 clk_oe_bit = IXGBE_I2C_CLK_OE_N_EN_BY_MAC(hw);
+	u32 bb_en_bit = IXGBE_I2C_BB_EN_BY_MAC(hw);
 
 	DEBUGFUNC("ixgbe_i2c_stop");
 
@@ -1628,6 +2148,13 @@ static void ixgbe_i2c_stop(struct ixgbe_hw *hw)
 
 	/* bus free time between stop and start (4.7us)*/
 	usec_delay(IXGBE_I2C_T_BUF);
+
+	if (bb_en_bit || data_oe_bit || clk_oe_bit) {
+		i2cctl &= ~bb_en_bit;
+		i2cctl |= data_oe_bit | clk_oe_bit;
+		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), i2cctl);
+		IXGBE_WRITE_FLUSH(hw);
+	}
 }
 
 /**
@@ -1644,6 +2171,7 @@ static s32 ixgbe_clock_in_i2c_byte(struct ixgbe_hw *hw, u8 *data)
 
 	DEBUGFUNC("ixgbe_clock_in_i2c_byte");
 
+	*data = 0;
 	for (i = 7; i >= 0; i--) {
 		ixgbe_clock_in_i2c_bit(hw, &bit);
 		*data |= bit << i;
@@ -1664,7 +2192,7 @@ static s32 ixgbe_clock_out_i2c_byte(struct ixgbe_hw *hw, u8 data)
 	s32 status = IXGBE_SUCCESS;
 	s32 i;
 	u32 i2cctl;
-	bool bit = 0;
+	bool bit;
 
 	DEBUGFUNC("ixgbe_clock_out_i2c_byte");
 
@@ -1677,9 +2205,10 @@ static s32 ixgbe_clock_out_i2c_byte(struct ixgbe_hw *hw, u8 data)
 	}
 
 	/* Release SDA line (set high) */
-	i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
-	i2cctl |= IXGBE_I2C_DATA_OUT;
-	IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, i2cctl);
+	i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));
+	i2cctl |= IXGBE_I2C_DATA_OUT_BY_MAC(hw);
+	i2cctl |= IXGBE_I2C_DATA_OE_N_EN_BY_MAC(hw);
+	IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), i2cctl);
 	IXGBE_WRITE_FLUSH(hw);
 
 	return status;
@@ -1693,34 +2222,39 @@ static s32 ixgbe_clock_out_i2c_byte(struct ixgbe_hw *hw, u8 data)
  **/
 static s32 ixgbe_get_i2c_ack(struct ixgbe_hw *hw)
 {
+	u32 data_oe_bit = IXGBE_I2C_DATA_OE_N_EN_BY_MAC(hw);
 	s32 status = IXGBE_SUCCESS;
 	u32 i = 0;
-	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
+	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));
 	u32 timeout = 10;
 	bool ack = 1;
 
 	DEBUGFUNC("ixgbe_get_i2c_ack");
 
+	if (data_oe_bit) {
+		i2cctl |= IXGBE_I2C_DATA_OUT_BY_MAC(hw);
+		i2cctl |= data_oe_bit;
+		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), i2cctl);
+		IXGBE_WRITE_FLUSH(hw);
+	}
 	ixgbe_raise_i2c_clk(hw, &i2cctl);
 
-
 	/* Minimum high period of clock is 4us */
 	usec_delay(IXGBE_I2C_T_HIGH);
 
 	/* Poll for ACK.  Note that ACK in I2C spec is
 	 * transition from 1 to 0 */
 	for (i = 0; i < timeout; i++) {
-		i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
-		ack = ixgbe_get_i2c_data(&i2cctl);
+		i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));
+		ack = ixgbe_get_i2c_data(hw, &i2cctl);
 
 		usec_delay(1);
-		if (ack == 0)
+		if (!ack)
 			break;
 	}
 
-	if (ack == 1) {
-		ERROR_REPORT1(IXGBE_ERROR_POLLING,
-			     "I2C ack was not received.\n");
+	if (ack) {
+		DEBUGOUT("I2C ack was not received.\n");
 		status = IXGBE_ERR_I2C;
 	}
 
@@ -1741,17 +2275,24 @@ static s32 ixgbe_get_i2c_ack(struct ixgbe_hw *hw)
  **/
 static s32 ixgbe_clock_in_i2c_bit(struct ixgbe_hw *hw, bool *data)
 {
-	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
+	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));
+	u32 data_oe_bit = IXGBE_I2C_DATA_OE_N_EN_BY_MAC(hw);
 
 	DEBUGFUNC("ixgbe_clock_in_i2c_bit");
 
+	if (data_oe_bit) {
+		i2cctl |= IXGBE_I2C_DATA_OUT_BY_MAC(hw);
+		i2cctl |= data_oe_bit;
+		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), i2cctl);
+		IXGBE_WRITE_FLUSH(hw);
+	}
 	ixgbe_raise_i2c_clk(hw, &i2cctl);
 
 	/* Minimum high period of clock is 4us */
 	usec_delay(IXGBE_I2C_T_HIGH);
 
-	i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
-	*data = ixgbe_get_i2c_data(&i2cctl);
+	i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));
+	*data = ixgbe_get_i2c_data(hw, &i2cctl);
 
 	ixgbe_lower_i2c_clk(hw, &i2cctl);
 
@@ -1771,7 +2312,7 @@ static s32 ixgbe_clock_in_i2c_bit(struct ixgbe_hw *hw, bool *data)
 static s32 ixgbe_clock_out_i2c_bit(struct ixgbe_hw *hw, bool data)
 {
 	s32 status;
-	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
+	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));
 
 	DEBUGFUNC("ixgbe_clock_out_i2c_bit");
 
@@ -1796,31 +2337,39 @@ static s32 ixgbe_clock_out_i2c_bit(struct ixgbe_hw *hw, bool data)
 
 	return status;
 }
+
 /**
  *  ixgbe_raise_i2c_clk - Raises the I2C SCL clock
  *  @hw: pointer to hardware structure
  *  @i2cctl: Current value of I2CCTL register
  *
  *  Raises the I2C clock line '0'->'1'
+ *  Negates the I2C clock output enable on X550 hardware.
  **/
 static void ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl)
 {
+	u32 clk_oe_bit = IXGBE_I2C_CLK_OE_N_EN_BY_MAC(hw);
 	u32 i = 0;
 	u32 timeout = IXGBE_I2C_CLOCK_STRETCHING_TIMEOUT;
 	u32 i2cctl_r = 0;
 
 	DEBUGFUNC("ixgbe_raise_i2c_clk");
 
+	if (clk_oe_bit) {
+		*i2cctl |= clk_oe_bit;
+		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), *i2cctl);
+	}
+
 	for (i = 0; i < timeout; i++) {
-		*i2cctl |= IXGBE_I2C_CLK_OUT;
+		*i2cctl |= IXGBE_I2C_CLK_OUT_BY_MAC(hw);
 
-		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl);
+		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), *i2cctl);
 		IXGBE_WRITE_FLUSH(hw);
 		/* SCL rise time (1000ns) */
 		usec_delay(IXGBE_I2C_T_RISE);
 
-		i2cctl_r = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
-		if (i2cctl_r & IXGBE_I2C_CLK_IN)
+		i2cctl_r = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));
+		if (i2cctl_r & IXGBE_I2C_CLK_IN_BY_MAC(hw))
 			break;
 	}
 }
@@ -1831,15 +2380,16 @@ static void ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl)
  *  @i2cctl: Current value of I2CCTL register
  *
  *  Lowers the I2C clock line '1'->'0'
+ *  Asserts the I2C clock output enable on X550 hardware.
  **/
 static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl)
 {
-
 	DEBUGFUNC("ixgbe_lower_i2c_clk");
 
-	*i2cctl &= ~IXGBE_I2C_CLK_OUT;
+	*i2cctl &= ~(IXGBE_I2C_CLK_OUT_BY_MAC(hw));
+	*i2cctl &= ~IXGBE_I2C_CLK_OE_N_EN_BY_MAC(hw);
 
-	IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl);
+	IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), *i2cctl);
 	IXGBE_WRITE_FLUSH(hw);
 
 	/* SCL fall time (300ns) */
@@ -1853,27 +2403,38 @@ static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl)
  *  @data: I2C data value (0 or 1) to set
  *
  *  Sets the I2C data bit
+ *  Asserts the I2C data output enable on X550 hardware.
  **/
 static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data)
 {
+	u32 data_oe_bit = IXGBE_I2C_DATA_OE_N_EN_BY_MAC(hw);
 	s32 status = IXGBE_SUCCESS;
 
 	DEBUGFUNC("ixgbe_set_i2c_data");
 
 	if (data)
-		*i2cctl |= IXGBE_I2C_DATA_OUT;
+		*i2cctl |= IXGBE_I2C_DATA_OUT_BY_MAC(hw);
 	else
-		*i2cctl &= ~IXGBE_I2C_DATA_OUT;
+		*i2cctl &= ~(IXGBE_I2C_DATA_OUT_BY_MAC(hw));
+	*i2cctl &= ~data_oe_bit;
 
-	IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl);
+	IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), *i2cctl);
 	IXGBE_WRITE_FLUSH(hw);
 
 	/* Data rise/fall (1000ns/300ns) and set-up time (250ns) */
 	usec_delay(IXGBE_I2C_T_RISE + IXGBE_I2C_T_FALL + IXGBE_I2C_T_SU_DATA);
 
+	if (!data)	/* Can't verify data in this case */
+		return IXGBE_SUCCESS;
+	if (data_oe_bit) {
+		*i2cctl |= data_oe_bit;
+		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), *i2cctl);
+		IXGBE_WRITE_FLUSH(hw);
+	}
+
 	/* Verify data was set correctly */
-	*i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
-	if (data != ixgbe_get_i2c_data(i2cctl)) {
+	*i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));
+	if (data != ixgbe_get_i2c_data(hw, i2cctl)) {
 		status = IXGBE_ERR_I2C;
 		ERROR_REPORT2(IXGBE_ERROR_INVALID_STATE,
 			     "Error - I2C data was not set to %X.\n",
@@ -1889,14 +2450,23 @@ static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data)
  *  @i2cctl: Current value of I2CCTL register
  *
  *  Returns the I2C data bit value
+ *  Negates the I2C data output enable on X550 hardware.
  **/
-static bool ixgbe_get_i2c_data(u32 *i2cctl)
+static bool ixgbe_get_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl)
 {
+	u32 data_oe_bit = IXGBE_I2C_DATA_OE_N_EN_BY_MAC(hw);
 	bool data;
 
 	DEBUGFUNC("ixgbe_get_i2c_data");
 
-	if (*i2cctl & IXGBE_I2C_DATA_IN)
+	if (data_oe_bit) {
+		*i2cctl |= data_oe_bit;
+		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), *i2cctl);
+		IXGBE_WRITE_FLUSH(hw);
+		usec_delay(IXGBE_I2C_T_FALL);
+	}
+
+	if (*i2cctl & IXGBE_I2C_DATA_IN_BY_MAC(hw))
 		data = 1;
 	else
 		data = 0;
@@ -1913,12 +2483,13 @@ static bool ixgbe_get_i2c_data(u32 *i2cctl)
  **/
 void ixgbe_i2c_bus_clear(struct ixgbe_hw *hw)
 {
-	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL);
+	u32 i2cctl;
 	u32 i;
 
 	DEBUGFUNC("ixgbe_i2c_bus_clear");
 
 	ixgbe_i2c_start(hw);
+	i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));
 
 	ixgbe_set_i2c_data(hw, &i2cctl, 1);
 
@@ -1968,3 +2539,33 @@ s32 ixgbe_tn_check_overtemp(struct ixgbe_hw *hw)
 out:
 	return status;
 }
+
+/**
+ * ixgbe_set_copper_phy_power - Control power for copper phy
+ * @hw: pointer to hardware structure
+ * @on: TRUE for on, FALSE for off
+ */
+s32 ixgbe_set_copper_phy_power(struct ixgbe_hw *hw, bool on)
+{
+	u32 status;
+	u16 reg;
+
+	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_VENDOR_SPECIFIC_1_CONTROL,
+				      IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
+				      &reg);
+	if (status)
+		return status;
+
+	if (on) {
+		reg &= ~IXGBE_MDIO_PHY_SET_LOW_POWER_MODE;
+	} else {
+		if (ixgbe_check_reset_blocked(hw))
+			return 0;
+		reg |= IXGBE_MDIO_PHY_SET_LOW_POWER_MODE;
+	}
+
+	status = hw->phy.ops.write_reg(hw, IXGBE_MDIO_VENDOR_SPECIFIC_1_CONTROL,
+				       IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
+				       reg);
+	return status;
+}