Add support for 10Gb ethernet cards based on the Intel X540 chipset.

The code was obtained from FreeBSD and tested on the hardware kindly
donated by Tony Sarendal <tony () polarcap ! org>.  Thanks a lot!

ok jsg

1 files changed, 898 insertions, 0 deletions

diff --git a/sys/dev/pci/ixgbe_x540.c b/sys/dev/pci/ixgbe_x540.c
new file mode 100644
index 00000000000..218056aa827
--- /dev/null
+++ b/sys/dev/pci/ixgbe_x540.c
@@ -0,0 +1,898 @@
+/*	$OpenBSD: ixgbe_x540.c,v 1.1 2012/08/06 21:07:52 mikeb Exp $	*/
+
+/******************************************************************************
+
+  Copyright (c) 2001-2012, Intel Corporation
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+   3. Neither the name of the Intel Corporation nor the names of its
+      contributors may be used to endorse or promote products derived from
+      this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE.
+
+******************************************************************************/
+/*$FreeBSD: src/sys/dev/ixgbe/ixgbe_x540.c,v 1.2 2012/07/05 20:51:44 jfv Exp $*/
+
+#include <dev/pci/ixgbe.h>
+#include <dev/pci/ixgbe_type.h>
+
+int32_t ixgbe_update_flash_X540(struct ixgbe_hw *hw);
+int32_t ixgbe_poll_flash_update_done_X540(struct ixgbe_hw *hw);
+int32_t ixgbe_get_swfw_sync_semaphore(struct ixgbe_hw *hw);
+void ixgbe_release_swfw_sync_semaphore(struct ixgbe_hw *hw);
+
+enum ixgbe_media_type ixgbe_get_media_type_X540(struct ixgbe_hw *hw);
+int32_t ixgbe_setup_mac_link_X540(struct ixgbe_hw *hw, ixgbe_link_speed speed,
+			      int autoneg, int link_up_wait_to_complete);
+int32_t ixgbe_reset_hw_X540(struct ixgbe_hw *hw);
+int32_t ixgbe_start_hw_X540(struct ixgbe_hw *hw);
+uint32_t ixgbe_get_supported_physical_layer_X540(struct ixgbe_hw *hw);
+
+int32_t ixgbe_init_eeprom_params_X540(struct ixgbe_hw *hw);
+int32_t ixgbe_read_eerd_X540(struct ixgbe_hw *hw, uint16_t offset, uint16_t *data);
+int32_t ixgbe_write_eewr_X540(struct ixgbe_hw *hw, uint16_t offset, uint16_t data);
+int32_t ixgbe_update_eeprom_checksum_X540(struct ixgbe_hw *hw);
+int32_t ixgbe_validate_eeprom_checksum_X540(struct ixgbe_hw *hw, uint16_t *checksum_val);
+uint16_t ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw);
+
+int32_t ixgbe_acquire_swfw_sync_X540(struct ixgbe_hw *hw, uint16_t mask);
+void ixgbe_release_swfw_sync_X540(struct ixgbe_hw *hw, uint16_t mask);
+
+int32_t ixgbe_blink_led_start_X540(struct ixgbe_hw *hw, uint32_t index);
+int32_t ixgbe_blink_led_stop_X540(struct ixgbe_hw *hw, uint32_t index);
+
+/**
+ *  ixgbe_init_ops_X540 - Inits func ptrs and MAC type
+ *  @hw: pointer to hardware structure
+ *
+ *  Initialize the function pointers and assign the MAC type for X540.
+ *  Does not touch the hardware.
+ **/
+int32_t ixgbe_init_ops_X540(struct ixgbe_hw *hw)
+{
+	struct ixgbe_mac_info *mac = &hw->mac;
+	struct ixgbe_phy_info *phy = &hw->phy;
+	struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
+	int32_t ret_val;
+
+	DEBUGFUNC("ixgbe_init_ops_X540");
+
+	ret_val = ixgbe_init_phy_ops_generic(hw);
+	ret_val = ixgbe_init_ops_generic(hw);
+
+	/* EEPROM */
+	eeprom->ops.init_params = &ixgbe_init_eeprom_params_X540;
+	eeprom->ops.read = &ixgbe_read_eerd_X540;
+	eeprom->ops.write = &ixgbe_write_eewr_X540;
+	eeprom->ops.update_checksum = &ixgbe_update_eeprom_checksum_X540;
+	eeprom->ops.validate_checksum = &ixgbe_validate_eeprom_checksum_X540;
+	eeprom->ops.calc_checksum = &ixgbe_calc_eeprom_checksum_X540;
+
+	/* PHY */
+	phy->ops.init = &ixgbe_init_phy_ops_generic;
+	phy->ops.reset = NULL;
+
+	/* MAC */
+	mac->ops.reset_hw = &ixgbe_reset_hw_X540;
+	mac->ops.enable_relaxed_ordering = &ixgbe_enable_relaxed_ordering_gen2;
+	mac->ops.get_media_type = &ixgbe_get_media_type_X540;
+	mac->ops.get_supported_physical_layer =
+				    &ixgbe_get_supported_physical_layer_X540;
+	mac->ops.read_analog_reg8 = NULL;
+	mac->ops.write_analog_reg8 = NULL;
+	mac->ops.start_hw = &ixgbe_start_hw_X540;
+	mac->ops.get_device_caps = &ixgbe_get_device_caps_generic;
+	mac->ops.acquire_swfw_sync = &ixgbe_acquire_swfw_sync_X540;
+	mac->ops.release_swfw_sync = &ixgbe_release_swfw_sync_X540;
+
+	/* RAR, Multicast, VLAN */
+	mac->ops.set_vmdq = &ixgbe_set_vmdq_generic;
+	mac->ops.clear_vmdq = &ixgbe_clear_vmdq_generic;
+	mac->ops.insert_mac_addr = &ixgbe_insert_mac_addr_generic;
+	mac->ops.insert_mac_addr = &ixgbe_insert_mac_addr_generic;
+	mac->rar_highwater = 1;
+	mac->ops.set_vfta = &ixgbe_set_vfta_generic;
+	mac->ops.clear_vfta = &ixgbe_clear_vfta_generic;
+
+	/* Link */
+	mac->ops.get_link_capabilities =
+				&ixgbe_get_copper_link_capabilities_generic;
+	mac->ops.setup_link = &ixgbe_setup_mac_link_X540;
+	mac->ops.check_link = &ixgbe_check_mac_link_generic;
+
+	mac->mcft_size		= 128;
+	mac->vft_size		= 128;
+	mac->num_rar_entries	= 128;
+	mac->rx_pb_size		= 384;
+	mac->max_tx_queues	= 128;
+	mac->max_rx_queues	= 128;
+	mac->max_msix_vectors	= ixgbe_get_pcie_msix_count_generic(hw);
+
+	hw->mbx.ops.init_params = ixgbe_init_mbx_params_pf;
+
+	/* LEDs */
+	mac->ops.blink_led_start = ixgbe_blink_led_start_X540;
+	mac->ops.blink_led_stop = ixgbe_blink_led_stop_X540;
+
+	return ret_val;
+}
+
+/**
+ *  ixgbe_get_media_type_X540 - Get media type
+ *  @hw: pointer to hardware structure
+ *
+ *  Returns the media type (fiber, copper, backplane)
+ **/
+enum ixgbe_media_type ixgbe_get_media_type_X540(struct ixgbe_hw *hw)
+{
+	UNREFERENCED_PARAMETER(hw);
+	return ixgbe_media_type_copper;
+}
+
+/**
+ *  ixgbe_setup_mac_link_X540 - Sets the auto advertised capabilities
+ *  @hw: pointer to hardware structure
+ *  @speed: new link speed
+ *  @autoneg: TRUE if autonegotiation enabled
+ *  @autoneg_wait_to_complete: TRUE when waiting for completion is needed
+ **/
+int32_t ixgbe_setup_mac_link_X540(struct ixgbe_hw *hw,
+			      ixgbe_link_speed speed, int autoneg,
+			      int autoneg_wait_to_complete)
+{
+	DEBUGFUNC("ixgbe_setup_mac_link_X540");
+	return hw->phy.ops.setup_link_speed(hw, speed, autoneg,
+					    autoneg_wait_to_complete);
+}
+
+/**
+ *  ixgbe_reset_hw_X540 - Perform hardware reset
+ *  @hw: pointer to hardware structure
+ *
+ *  Resets the hardware by resetting the transmit and receive units, masks
+ *  and clears all interrupts, and perform a reset.
+ **/
+int32_t ixgbe_reset_hw_X540(struct ixgbe_hw *hw)
+{
+	int32_t status;
+	uint32_t ctrl, i;
+
+	DEBUGFUNC("ixgbe_reset_hw_X540");
+
+	/* Call adapter stop to disable tx/rx and clear interrupts */
+	status = hw->mac.ops.stop_adapter(hw);
+	if (status != IXGBE_SUCCESS)
+		goto reset_hw_out;
+
+mac_reset_top:
+	ctrl = IXGBE_CTRL_RST;
+	ctrl |= IXGBE_READ_REG(hw, IXGBE_CTRL);
+	IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
+	IXGBE_WRITE_FLUSH(hw);
+
+	/* Poll for reset bit to self-clear indicating reset is complete */
+	for (i = 0; i < 10; i++) {
+		usec_delay(1);
+		ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
+		if (!(ctrl & IXGBE_CTRL_RST_MASK))
+			break;
+	}
+
+	if (ctrl & IXGBE_CTRL_RST_MASK) {
+		status = IXGBE_ERR_RESET_FAILED;
+		DEBUGOUT("Reset polling failed to complete.\n");
+	}
+	msec_delay(100);
+
+	/*
+	 * Double resets are required for recovery from certain error
+	 * conditions.  Between resets, it is necessary to stall to allow time
+	 * for any pending HW events to complete.
+	 */
+	if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) {
+		hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
+		goto mac_reset_top;
+	}
+
+	/* Set the Rx packet buffer size. */
+	IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(0), 384 << IXGBE_RXPBSIZE_SHIFT);
+
+	/* Store the permanent mac address */
+	hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);
+
+	/*
+	 * Store MAC address from RAR0, clear receive address registers, and
+	 * clear the multicast table.  Also reset num_rar_entries to 128,
+	 * since we modify this value when programming the SAN MAC address.
+	 */
+	hw->mac.num_rar_entries = 128;
+	hw->mac.ops.init_rx_addrs(hw);
+
+#if 0
+	/* Store the permanent SAN mac address */
+	hw->mac.ops.get_san_mac_addr(hw, hw->mac.san_addr);
+
+	/* Add the SAN MAC address to the RAR only if it's a valid address */
+	if (ixgbe_validate_mac_addr(hw->mac.san_addr) == 0) {
+		hw->mac.ops.set_rar(hw, hw->mac.num_rar_entries - 1,
+				    hw->mac.san_addr, 0, IXGBE_RAH_AV);
+
+		/* Save the SAN MAC RAR index */
+		hw->mac.san_mac_rar_index = hw->mac.num_rar_entries - 1;
+
+		/* Reserve the last RAR for the SAN MAC address */
+		hw->mac.num_rar_entries--;
+	}
+
+	/* Store the alternative WWNN/WWPN prefix */
+	hw->mac.ops.get_wwn_prefix(hw, &hw->mac.wwnn_prefix,
+				   &hw->mac.wwpn_prefix);
+#endif
+
+reset_hw_out:
+	return status;
+}
+
+/**
+ *  ixgbe_start_hw_X540 - Prepare hardware for Tx/Rx
+ *  @hw: pointer to hardware structure
+ *
+ *  Starts the hardware using the generic start_hw function
+ *  and the generation start_hw function.
+ *  Then performs revision-specific operations, if any.
+ **/
+int32_t ixgbe_start_hw_X540(struct ixgbe_hw *hw)
+{
+	int32_t ret_val = IXGBE_SUCCESS;
+
+	DEBUGFUNC("ixgbe_start_hw_X540");
+
+	ret_val = ixgbe_start_hw_generic(hw);
+	if (ret_val != IXGBE_SUCCESS)
+		goto out;
+
+	ret_val = ixgbe_start_hw_gen2(hw);
+
+out:
+	return ret_val;
+}
+
+/**
+ *  ixgbe_get_supported_physical_layer_X540 - Returns physical layer type
+ *  @hw: pointer to hardware structure
+ *
+ *  Determines physical layer capabilities of the current configuration.
+ **/
+uint32_t ixgbe_get_supported_physical_layer_X540(struct ixgbe_hw *hw)
+{
+	uint32_t physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;
+	uint16_t ext_ability = 0;
+
+	DEBUGFUNC("ixgbe_get_supported_physical_layer_X540");
+
+	hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_EXT_ABILITY,
+	IXGBE_MDIO_PMA_PMD_DEV_TYPE, &ext_ability);
+	if (ext_ability & IXGBE_MDIO_PHY_10GBASET_ABILITY)
+		physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_T;
+	if (ext_ability & IXGBE_MDIO_PHY_1000BASET_ABILITY)
+		physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_T;
+	if (ext_ability & IXGBE_MDIO_PHY_100BASETX_ABILITY)
+		physical_layer |= IXGBE_PHYSICAL_LAYER_100BASE_TX;
+
+	return physical_layer;
+}
+
+/**
+ *  ixgbe_init_eeprom_params_X540 - Initialize EEPROM params
+ *  @hw: pointer to hardware structure
+ *
+ *  Initializes the EEPROM parameters ixgbe_eeprom_info within the
+ *  ixgbe_hw struct in order to set up EEPROM access.
+ **/
+int32_t ixgbe_init_eeprom_params_X540(struct ixgbe_hw *hw)
+{
+	struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
+	uint32_t eec;
+	uint16_t eeprom_size;
+
+	DEBUGFUNC("ixgbe_init_eeprom_params_X540");
+
+	if (eeprom->type == ixgbe_eeprom_uninitialized) {
+		eeprom->semaphore_delay = 10;
+		eeprom->type = ixgbe_flash;
+
+		eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+		eeprom_size = (uint16_t)((eec & IXGBE_EEC_SIZE) >>
+				    IXGBE_EEC_SIZE_SHIFT);
+		eeprom->word_size = 1 << (eeprom_size +
+					  IXGBE_EEPROM_WORD_SIZE_BASE_SHIFT);
+
+		DEBUGOUT2("Eeprom params: type = %d, size = %d\n",
+			  eeprom->type, eeprom->word_size);
+	}
+
+	return IXGBE_SUCCESS;
+}
+
+/**
+ *  ixgbe_read_eerd_X540- Read EEPROM word using EERD
+ *  @hw: pointer to hardware structure
+ *  @offset: offset of  word in the EEPROM to read
+ *  @data: word read from the EEPROM
+ *
+ *  Reads a 16 bit word from the EEPROM using the EERD register.
+ **/
+int32_t ixgbe_read_eerd_X540(struct ixgbe_hw *hw, uint16_t offset, uint16_t *data)
+{
+	int32_t status = IXGBE_SUCCESS;
+
+	DEBUGFUNC("ixgbe_read_eerd_X540");
+	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
+	    IXGBE_SUCCESS)
+		status = ixgbe_read_eerd_generic(hw, offset, data);
+	else
+		status = IXGBE_ERR_SWFW_SYNC;
+
+	hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
+	return status;
+}
+
+/**
+ *  ixgbe_write_eewr_X540 - Write EEPROM word using EEWR
+ *  @hw: pointer to hardware structure
+ *  @offset: offset of  word in the EEPROM to write
+ *  @data: word write to the EEPROM
+ *
+ *  Write a 16 bit word to the EEPROM using the EEWR register.
+ **/
+int32_t ixgbe_write_eewr_X540(struct ixgbe_hw *hw, uint16_t offset, uint16_t data)
+{
+	int32_t status = IXGBE_SUCCESS;
+
+	DEBUGFUNC("ixgbe_write_eewr_X540");
+	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
+	    IXGBE_SUCCESS)
+		status = ixgbe_write_eewr_generic(hw, offset, data);
+	else
+		status = IXGBE_ERR_SWFW_SYNC;
+
+	hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
+	return status;
+}
+
+/**
+ *  ixgbe_calc_eeprom_checksum_X540 - Calculates and returns the checksum
+ *
+ *  This function does not use synchronization for EERD and EEWR. It can
+ *  be used internally by function which utilize ixgbe_acquire_swfw_sync_X540.
+ *
+ *  @hw: pointer to hardware structure
+ **/
+uint16_t ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw)
+{
+	uint16_t i;
+	uint16_t j;
+	uint16_t checksum = 0;
+	uint16_t length = 0;
+	uint16_t pointer = 0;
+	uint16_t word = 0;
+
+	/*
+	 * Do not use hw->eeprom.ops.read because we do not want to take
+	 * the synchronization semaphores here. Instead use
+	 * ixgbe_read_eerd_generic
+	 */
+
+	DEBUGFUNC("ixgbe_calc_eeprom_checksum_X540");
+
+	/* Include 0x0-0x3F in the checksum */
+	for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
+		if (ixgbe_read_eerd_generic(hw, i, &word) != IXGBE_SUCCESS) {
+			DEBUGOUT("EEPROM read failed\n");
+			break;
+		}
+		checksum += word;
+	}
+
+	/*
+	 * Include all data from pointers 0x3, 0x6-0xE.  This excludes the
+	 * FW, PHY module, and PCIe Expansion/Option ROM pointers.
+	 */
+	for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
+		if (i == IXGBE_PHY_PTR || i == IXGBE_OPTION_ROM_PTR)
+			continue;
+
+		if (ixgbe_read_eerd_generic(hw, i, &pointer) != IXGBE_SUCCESS) {
+			DEBUGOUT("EEPROM read failed\n");
+			break;
+		}
+
+		/* Skip pointer section if the pointer is invalid. */
+		if (pointer == 0xFFFF || pointer == 0 ||
+		    pointer >= hw->eeprom.word_size)
+			continue;
+
+		if (ixgbe_read_eerd_generic(hw, pointer, &length) !=
+		    IXGBE_SUCCESS) {
+			DEBUGOUT("EEPROM read failed\n");
+			break;
+		}
+
+		/* Skip pointer section if length is invalid. */
+		if (length == 0xFFFF || length == 0 ||
+		    (pointer + length) >= hw->eeprom.word_size)
+			continue;
+
+		for (j = pointer+1; j <= pointer+length; j++) {
+			if (ixgbe_read_eerd_generic(hw, j, &word) !=
+			    IXGBE_SUCCESS) {
+				DEBUGOUT("EEPROM read failed\n");
+				break;
+			}
+			checksum += word;
+		}
+	}
+
+	checksum = (uint16_t)IXGBE_EEPROM_SUM - checksum;
+
+	return checksum;
+}
+
+/**
+ *  ixgbe_validate_eeprom_checksum_X540 - Validate EEPROM checksum
+ *  @hw: pointer to hardware structure
+ *  @checksum_val: calculated checksum
+ *
+ *  Performs checksum calculation and validates the EEPROM checksum.  If the
+ *  caller does not need checksum_val, the value can be NULL.
+ **/
+int32_t ixgbe_validate_eeprom_checksum_X540(struct ixgbe_hw *hw,
+					uint16_t *checksum_val)
+{
+	int32_t status;
+	uint16_t checksum;
+	uint16_t read_checksum = 0;
+
+	DEBUGFUNC("ixgbe_validate_eeprom_checksum_X540");
+
+	/*
+	 * Read the first word from the EEPROM. If this times out or fails, do
+	 * not continue or we could be in for a very long wait while every
+	 * EEPROM read fails
+	 */
+	status = hw->eeprom.ops.read(hw, 0, &checksum);
+
+	if (status != IXGBE_SUCCESS) {
+		DEBUGOUT("EEPROM read failed\n");
+		goto out;
+	}
+
+	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
+	    IXGBE_SUCCESS) {
+		checksum = hw->eeprom.ops.calc_checksum(hw);
+
+		/*
+		 * Do not use hw->eeprom.ops.read because we do not want to take
+		 * the synchronization semaphores twice here.
+		*/
+		ixgbe_read_eerd_generic(hw, IXGBE_EEPROM_CHECKSUM,
+					&read_checksum);
+
+		/*
+		 * Verify read checksum from EEPROM is the same as
+		 * calculated checksum
+		 */
+		if (read_checksum != checksum)
+			status = IXGBE_ERR_EEPROM_CHECKSUM;
+
+		/* If the user cares, return the calculated checksum */
+		if (checksum_val)
+			*checksum_val = checksum;
+	} else {
+		status = IXGBE_ERR_SWFW_SYNC;
+	}
+
+	hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
+out:
+	return status;
+}
+
+/**
+ * ixgbe_update_eeprom_checksum_X540 - Updates the EEPROM checksum and flash
+ * @hw: pointer to hardware structure
+ *
+ * After writing EEPROM to shadow RAM using EEWR register, software calculates
+ * checksum and updates the EEPROM and instructs the hardware to update
+ * the flash.
+ **/
+int32_t ixgbe_update_eeprom_checksum_X540(struct ixgbe_hw *hw)
+{
+	int32_t status;
+	uint16_t checksum;
+
+	DEBUGFUNC("ixgbe_update_eeprom_checksum_X540");
+
+	/*
+	 * Read the first word from the EEPROM. If this times out or fails, do
+	 * not continue or we could be in for a very long wait while every
+	 * EEPROM read fails
+	 */
+	status = hw->eeprom.ops.read(hw, 0, &checksum);
+
+	if (status != IXGBE_SUCCESS)
+		DEBUGOUT("EEPROM read failed\n");
+
+	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
+	    IXGBE_SUCCESS) {
+		checksum = hw->eeprom.ops.calc_checksum(hw);
+
+		/*
+		 * Do not use hw->eeprom.ops.write because we do not want to
+		 * take the synchronization semaphores twice here.
+		*/
+		status = ixgbe_write_eewr_generic(hw, IXGBE_EEPROM_CHECKSUM,
+						  checksum);
+
+	if (status == IXGBE_SUCCESS)
+		status = ixgbe_update_flash_X540(hw);
+	else
+		status = IXGBE_ERR_SWFW_SYNC;
+	}
+
+	hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
+
+	return status;
+}
+
+/**
+ *  ixgbe_update_flash_X540 - Instruct HW to copy EEPROM to Flash device
+ *  @hw: pointer to hardware structure
+ *
+ *  Set FLUP (bit 23) of the EEC register to instruct Hardware to copy
+ *  EEPROM from shadow RAM to the flash device.
+ **/
+int32_t ixgbe_update_flash_X540(struct ixgbe_hw *hw)
+{
+	uint32_t flup;
+	int32_t status = IXGBE_ERR_EEPROM;
+
+	DEBUGFUNC("ixgbe_update_flash_X540");
+
+	status = ixgbe_poll_flash_update_done_X540(hw);
+	if (status == IXGBE_ERR_EEPROM) {
+		DEBUGOUT("Flash update time out\n");
+		goto out;
+	}
+
+	flup = IXGBE_READ_REG(hw, IXGBE_EEC) | IXGBE_EEC_FLUP;
+	IXGBE_WRITE_REG(hw, IXGBE_EEC, flup);
+
+	status = ixgbe_poll_flash_update_done_X540(hw);
+	if (status == IXGBE_SUCCESS)
+		DEBUGOUT("Flash update complete\n");
+	else
+		DEBUGOUT("Flash update time out\n");
+
+	if (hw->revision_id == 0) {
+		flup = IXGBE_READ_REG(hw, IXGBE_EEC);
+
+		if (flup & IXGBE_EEC_SEC1VAL) {
+			flup |= IXGBE_EEC_FLUP;
+			IXGBE_WRITE_REG(hw, IXGBE_EEC, flup);
+		}
+
+		status = ixgbe_poll_flash_update_done_X540(hw);
+		if (status == IXGBE_SUCCESS)
+			DEBUGOUT("Flash update complete\n");
+		else
+			DEBUGOUT("Flash update time out\n");
+	}
+out:
+	return status;
+}
+
+/**
+ *  ixgbe_poll_flash_update_done_X540 - Poll flash update status
+ *  @hw: pointer to hardware structure
+ *
+ *  Polls the FLUDONE (bit 26) of the EEC Register to determine when the
+ *  flash update is done.
+ **/
+int32_t ixgbe_poll_flash_update_done_X540(struct ixgbe_hw *hw)
+{
+	uint32_t i;
+	uint32_t reg;
+	int32_t status = IXGBE_ERR_EEPROM;
+
+	DEBUGFUNC("ixgbe_poll_flash_update_done_X540");
+
+	for (i = 0; i < IXGBE_FLUDONE_ATTEMPTS; i++) {
+		reg = IXGBE_READ_REG(hw, IXGBE_EEC);
+		if (reg & IXGBE_EEC_FLUDONE) {
+			status = IXGBE_SUCCESS;
+			break;
+		}
+		usec_delay(5);
+	}
+	return status;
+}
+
+/**
+ *  ixgbe_acquire_swfw_sync_X540 - Acquire SWFW semaphore
+ *  @hw: pointer to hardware structure
+ *  @mask: Mask to specify which semaphore to acquire
+ *
+ *  Acquires the SWFW semaphore thought the SW_FW_SYNC register for
+ *  the specified function (CSR, PHY0, PHY1, NVM, Flash)
+ **/
+int32_t ixgbe_acquire_swfw_sync_X540(struct ixgbe_hw *hw, uint16_t mask)
+{
+	uint32_t swfw_sync;
+	uint32_t swmask = mask;
+	uint32_t fwmask = mask << 5;
+	uint32_t hwmask = 0;
+	uint32_t timeout = 200;
+	uint32_t i;
+	int32_t ret_val = IXGBE_SUCCESS;
+
+	DEBUGFUNC("ixgbe_acquire_swfw_sync_X540");
+
+	if (swmask == IXGBE_GSSR_EEP_SM)
+		hwmask = IXGBE_GSSR_FLASH_SM;
+
+	/* SW only mask doesn't have FW bit pair */
+	if (swmask == IXGBE_GSSR_SW_MNG_SM)
+		fwmask = 0;
+
+	for (i = 0; i < timeout; i++) {
+		/*
+		 * SW NVM semaphore bit is used for access to all
+		 * SW_FW_SYNC bits (not just NVM)
+		 */
+		if (ixgbe_get_swfw_sync_semaphore(hw)) {
+			ret_val = IXGBE_ERR_SWFW_SYNC;
+			goto out;
+		}
+
+		swfw_sync = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC);
+		if (!(swfw_sync & (fwmask | swmask | hwmask))) {
+			swfw_sync |= swmask;
+			IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC, swfw_sync);
+			ixgbe_release_swfw_sync_semaphore(hw);
+			msec_delay(5);
+			goto out;
+		} else {
+			/*
+			 * Firmware currently using resource (fwmask), hardware
+			 * currently using resource (hwmask), or other software
+			 * thread currently using resource (swmask)
+			 */
+			ixgbe_release_swfw_sync_semaphore(hw);
+			msec_delay(5);
+		}
+	}
+
+	/* Failed to get SW only semaphore */
+	if (swmask == IXGBE_GSSR_SW_MNG_SM) {
+		ret_val = IXGBE_ERR_SWFW_SYNC;
+		goto out;
+	}
+
+	/* If the resource is not released by the FW/HW the SW can assume that
+	 * the FW/HW malfunctions. In that case the SW should sets the SW bit(s)
+	 * of the requested resource(s) while ignoring the corresponding FW/HW
+	 * bits in the SW_FW_SYNC register.
+	 */
+	swfw_sync = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC);
+	if (swfw_sync & (fwmask | hwmask)) {
+		if (ixgbe_get_swfw_sync_semaphore(hw)) {
+			ret_val = IXGBE_ERR_SWFW_SYNC;
+			goto out;
+		}
+
+		swfw_sync |= swmask;
+		IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC, swfw_sync);
+		ixgbe_release_swfw_sync_semaphore(hw);
+		msec_delay(5);
+	}
+
+out:
+	return ret_val;
+}
+
+/**
+ *  ixgbe_release_swfw_sync_X540 - Release SWFW semaphore
+ *  @hw: pointer to hardware structure
+ *  @mask: Mask to specify which semaphore to release
+ *
+ *  Releases the SWFW semaphore through the SW_FW_SYNC register
+ *  for the specified function (CSR, PHY0, PHY1, EVM, Flash)
+ **/
+void ixgbe_release_swfw_sync_X540(struct ixgbe_hw *hw, uint16_t mask)
+{
+	uint32_t swfw_sync;
+	uint32_t swmask = mask;
+
+	DEBUGFUNC("ixgbe_release_swfw_sync_X540");
+
+	ixgbe_get_swfw_sync_semaphore(hw);
+
+	swfw_sync = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC);
+	swfw_sync &= ~swmask;
+	IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC, swfw_sync);
+
+	ixgbe_release_swfw_sync_semaphore(hw);
+	msec_delay(5);
+}
+
+/**
+ *  ixgbe_get_nvm_semaphore - Get hardware semaphore
+ *  @hw: pointer to hardware structure
+ *
+ *  Sets the hardware semaphores so SW/FW can gain control of shared resources
+ **/
+int32_t ixgbe_get_swfw_sync_semaphore(struct ixgbe_hw *hw)
+{
+	int32_t status = IXGBE_ERR_EEPROM;
+	uint32_t timeout = 2000;
+	uint32_t i;
+	uint32_t swsm;
+
+	DEBUGFUNC("ixgbe_get_swfw_sync_semaphore");
+
+	/* Get SMBI software semaphore between device drivers first */
+	for (i = 0; i < timeout; i++) {
+		/*
+		 * If the SMBI bit is 0 when we read it, then the bit will be
+		 * set and we have the semaphore
+		 */
+		swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
+		if (!(swsm & IXGBE_SWSM_SMBI)) {
+			status = IXGBE_SUCCESS;
+			break;
+		}
+		usec_delay(50);
+	}
+
+	/* Now get the semaphore between SW/FW through the REGSMP bit */
+	if (status == IXGBE_SUCCESS) {
+		for (i = 0; i < timeout; i++) {
+			swsm = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC);
+			if (!(swsm & IXGBE_SWFW_REGSMP))
+				break;
+
+			usec_delay(50);
+		}
+
+		/*
+		 * Release semaphores and return error if SW NVM semaphore
+		 * was not granted because we don't have access to the EEPROM
+		 */
+		if (i >= timeout) {
+			DEBUGOUT("REGSMP Software NVM semaphore not "
+				 "granted.\n");
+			ixgbe_release_swfw_sync_semaphore(hw);
+			status = IXGBE_ERR_EEPROM;
+		}
+	} else {
+		DEBUGOUT("Software semaphore SMBI between device drivers "
+			 "not granted.\n");
+	}
+
+	return status;
+}
+
+/**
+ *  ixgbe_release_nvm_semaphore - Release hardware semaphore
+ *  @hw: pointer to hardware structure
+ *
+ *  This function clears hardware semaphore bits.
+ **/
+void ixgbe_release_swfw_sync_semaphore(struct ixgbe_hw *hw)
+{
+	uint32_t swsm;
+
+	DEBUGFUNC("ixgbe_release_swfw_sync_semaphore");
+
+	/* Release both semaphores by writing 0 to the bits REGSMP and SMBI */
+
+	swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
+	swsm &= ~IXGBE_SWSM_SMBI;
+	IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
+
+	swsm = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC);
+	swsm &= ~IXGBE_SWFW_REGSMP;
+	IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC, swsm);
+
+	IXGBE_WRITE_FLUSH(hw);
+}
+
+/**
+ * ixgbe_blink_led_start_X540 - Blink LED based on index.
+ * @hw: pointer to hardware structure
+ * @index: led number to blink
+ *
+ * Devices that implement the version 2 interface:
+ *   X540
+ **/
+int32_t ixgbe_blink_led_start_X540(struct ixgbe_hw *hw, uint32_t index)
+{
+	uint32_t macc_reg;
+	uint32_t ledctl_reg;
+	ixgbe_link_speed speed;
+	int link_up;
+
+	DEBUGFUNC("ixgbe_blink_led_start_X540");
+
+	/*
+	 * Link should be up in order for the blink bit in the LED control
+	 * register to work. Force link and speed in the MAC if link is down.
+	 * This will be reversed when we stop the blinking.
+	 */
+	hw->mac.ops.check_link(hw, &speed, &link_up, FALSE);
+	if (link_up == FALSE) {
+		macc_reg = IXGBE_READ_REG(hw, IXGBE_MACC);
+		macc_reg |= IXGBE_MACC_FLU | IXGBE_MACC_FSV_10G | IXGBE_MACC_FS;
+		IXGBE_WRITE_REG(hw, IXGBE_MACC, macc_reg);
+	}
+	/* Set the LED to LINK_UP + BLINK. */
+	ledctl_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
+	ledctl_reg &= ~IXGBE_LED_MODE_MASK(index);
+	ledctl_reg |= IXGBE_LED_BLINK(index);
+	IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, ledctl_reg);
+	IXGBE_WRITE_FLUSH(hw);
+
+	return IXGBE_SUCCESS;
+}
+
+/**
+ * ixgbe_blink_led_stop_X540 - Stop blinking LED based on index.
+ * @hw: pointer to hardware structure
+ * @index: led number to stop blinking
+ *
+ * Devices that implement the version 2 interface:
+ *   X540
+ **/
+int32_t ixgbe_blink_led_stop_X540(struct ixgbe_hw *hw, uint32_t index)
+{
+	uint32_t macc_reg;
+	uint32_t ledctl_reg;
+
+	DEBUGFUNC("ixgbe_blink_led_stop_X540");
+
+	/* Restore the LED to its default value. */
+	ledctl_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
+	ledctl_reg &= ~IXGBE_LED_MODE_MASK(index);
+	ledctl_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
+	ledctl_reg &= ~IXGBE_LED_BLINK(index);
+	IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, ledctl_reg);
+
+	/* Unforce link and speed in the MAC. */
+	macc_reg = IXGBE_READ_REG(hw, IXGBE_MACC);
+	macc_reg &= ~(IXGBE_MACC_FLU | IXGBE_MACC_FSV_10G | IXGBE_MACC_FS);
+	IXGBE_WRITE_REG(hw, IXGBE_MACC, macc_reg);
+	IXGBE_WRITE_FLUSH(hw);
+
+	return IXGBE_SUCCESS;
+}