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[Xen-devel] [PATCH 3/11] common hardware functions

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] [PATCH 3/11] common hardware functions
From: Mitch Williams <mitch.a.williams@xxxxxxxxx>
Date: Wed, 28 Jan 2009 16:38:23 -0800
Delivery-date: Wed, 28 Jan 2009 16:42:13 -0800
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This shared code module controls hardware functionality that is common
to all Intel 10 Gpbs Ethernet adapters.

Signed-off-by: Mitch Williams <mitch.a.williams@xxxxxxxxx>

diff -urpN -X dontdiff a/drivers/net/ixgbe/ixgbe_common.c
b/drivers/net/ixgbe/ixgbe_common.c
--- a/drivers/net/ixgbe/ixgbe_common.c  1969-12-31 16:00:00.000000000 -0800
+++ b/drivers/net/ixgbe/ixgbe_common.c  2009-01-22 11:33:59.000000000 -0800
@@ -0,0 +1,1807 @@
+/*******************************************************************************
+
+  Intel 10 Gigabit PCI Express Linux driver
+  Copyright(c) 1999 - 2008 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <e1000-devel@xxxxxxxxxxxxxxxxxxxxx>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#include "ixgbe_common.h"
+#include "ixgbe_api.h"
+
+static s32 ixgbe_poll_eeprom_eerd_done(struct ixgbe_hw *hw);
+static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw);
+static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw);
+static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw);
+static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw);
+static void ixgbe_standby_eeprom(struct ixgbe_hw *hw);
+static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
+                                        u16 count);
+static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count);
+static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
+static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
+static void ixgbe_release_eeprom(struct ixgbe_hw *hw);
+static u16 ixgbe_calc_eeprom_checksum(struct ixgbe_hw *hw);
+
+static void ixgbe_enable_rar(struct ixgbe_hw *hw, u32 index);
+static void ixgbe_disable_rar(struct ixgbe_hw *hw, u32 index);
+static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr);
+void ixgbe_add_mc_addr(struct ixgbe_hw *hw, u8 *mc_addr);
+void ixgbe_add_uc_addr(struct ixgbe_hw *hw, u8 *addr, u32 vmdq);
+
+/**
+ *  ixgbe_init_ops_generic - Inits function ptrs
+ *  @hw: pointer to the hardware structure
+ *
+ *  Initialize the function pointers.
+ **/
+s32 ixgbe_init_ops_generic(struct ixgbe_hw *hw)
+{
+       struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
+       struct ixgbe_mac_info *mac = &hw->mac;
+       u32 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+
+       /* EEPROM */
+       eeprom->ops.init_params = &ixgbe_init_eeprom_params_generic;
+       /* If EEPROM is valid (bit 8 = 1), use EERD otherwise use bit bang */
+       if (eec & (1 << 8))
+               eeprom->ops.read = &ixgbe_read_eeprom_generic;
+       else
+               eeprom->ops.read = &ixgbe_read_eeprom_bit_bang_generic;
+       eeprom->ops.write = &ixgbe_write_eeprom_generic;
+       eeprom->ops.validate_checksum =
+                                     &ixgbe_validate_eeprom_checksum_generic;
+       eeprom->ops.update_checksum = &ixgbe_update_eeprom_checksum_generic;
+
+       /* MAC */
+       mac->ops.init_hw = &ixgbe_init_hw_generic;
+       mac->ops.reset_hw = NULL;
+       mac->ops.start_hw = &ixgbe_start_hw_generic;
+       mac->ops.clear_hw_cntrs = &ixgbe_clear_hw_cntrs_generic;
+       mac->ops.get_media_type = NULL;
+       mac->ops.get_supported_physical_layer = NULL;
+       mac->ops.get_mac_addr = &ixgbe_get_mac_addr_generic;
+       mac->ops.stop_adapter = &ixgbe_stop_adapter_generic;
+       mac->ops.get_bus_info = &ixgbe_get_bus_info_generic;
+       mac->ops.set_lan_id = &ixgbe_set_lan_id_multi_port_pcie;
+
+       /* LEDs */
+       mac->ops.led_on = &ixgbe_led_on_generic;
+       mac->ops.led_off = &ixgbe_led_off_generic;
+       mac->ops.blink_led_start = NULL;
+       mac->ops.blink_led_stop = NULL;
+
+       /* RAR, Multicast, VLAN */
+       mac->ops.set_rar = &ixgbe_set_rar_generic;
+       mac->ops.clear_rar = &ixgbe_clear_rar_generic;
+       mac->ops.set_vmdq = NULL;
+       mac->ops.clear_vmdq = NULL;
+       mac->ops.init_rx_addrs = &ixgbe_init_rx_addrs_generic;
+       mac->ops.update_uc_addr_list = &ixgbe_update_uc_addr_list_generic;
+       mac->ops.update_mc_addr_list = &ixgbe_update_mc_addr_list_generic;
+       mac->ops.enable_mc = &ixgbe_enable_mc_generic;
+       mac->ops.disable_mc = &ixgbe_disable_mc_generic;
+       mac->ops.clear_vfta = NULL;
+       mac->ops.set_vfta = NULL;
+       mac->ops.init_uta_tables = NULL;
+
+
+       /* Link */
+       mac->ops.get_link_capabilities = NULL;
+       mac->ops.setup_link = NULL;
+       mac->ops.setup_link_speed = NULL;
+       mac->ops.check_link = NULL;
+
+       return 0;
+}
+
+/**
+ *  ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
+ *  @hw: pointer to hardware structure
+ *
+ *  Starts the hardware by filling the bus info structure and media
type, clears
+ *  all on chip counters, initializes receive address registers, multicast
+ *  table, VLAN filter table, calls routine to set up link and flow control
+ *  settings, and leaves transmit and receive units disabled and uninitialized
+ **/
+s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
+{
+       u32 ctrl_ext;
+
+       /* Set the media type */
+       hw->phy.media_type = hw->mac.ops.get_media_type(hw);
+
+       /* Set bus info */
+       hw->mac.ops.get_bus_info(hw);
+
+       /* Identify the PHY */
+       hw->phy.ops.identify(hw);
+
+       /*
+        * Store MAC address from RAR0, clear receive address registers, and
+        * clear the multicast table
+        */
+       hw->mac.ops.init_rx_addrs(hw);
+
+       /* Clear the VLAN filter table */
+       hw->mac.ops.clear_vfta(hw);
+
+       /* Set up link */
+       hw->mac.ops.setup_link(hw);
+
+       /* Clear statistics registers */
+       hw->mac.ops.clear_hw_cntrs(hw);
+
+       /* Set No Snoop Disable */
+       ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
+       ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
+       IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
+       IXGBE_WRITE_FLUSH(hw);
+
+       /* Clear adapter stopped flag */
+       hw->adapter_stopped = false;
+
+       return 0;
+}
+
+/**
+ *  ixgbe_init_hw_generic - Generic hardware initialization
+ *  @hw: pointer to hardware structure
+ *
+ *  Initialize the hardware by resetting the hardware, filling the bus info
+ *  structure and media type, clears all on chip counters, initializes receive
+ *  address registers, multicast table, VLAN filter table, calls routine to set
+ *  up link and flow control settings, and leaves transmit and receive units
+ *  disabled and uninitialized
+ **/
+s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
+{
+       /* Reset the hardware */
+       hw->mac.ops.reset_hw(hw);
+
+       /* Start the HW */
+       hw->mac.ops.start_hw(hw);
+
+       return 0;
+}
+
+/**
+ *  ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters
+ *  @hw: pointer to hardware structure
+ *
+ *  Clears all hardware statistics counters by reading them from the hardware
+ *  Statistics counters are clear on read.
+ **/
+s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw)
+{
+       u16 i = 0;
+
+       IXGBE_READ_REG(hw, IXGBE_CRCERRS);
+       IXGBE_READ_REG(hw, IXGBE_ILLERRC);
+       IXGBE_READ_REG(hw, IXGBE_ERRBC);
+       IXGBE_READ_REG(hw, IXGBE_MSPDC);
+       for (i = 0; i < 8; i++)
+               IXGBE_READ_REG(hw, IXGBE_MPC(i));
+
+       IXGBE_READ_REG(hw, IXGBE_MLFC);
+       IXGBE_READ_REG(hw, IXGBE_MRFC);
+       IXGBE_READ_REG(hw, IXGBE_RLEC);
+       IXGBE_READ_REG(hw, IXGBE_LXONTXC);
+       IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
+       IXGBE_READ_REG(hw, IXGBE_LXONRXC);
+       IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
+
+       for (i = 0; i < 8; i++) {
+               IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
+               IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
+               IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
+               IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
+       }
+       IXGBE_READ_REG(hw, IXGBE_PRC64);
+       IXGBE_READ_REG(hw, IXGBE_PRC127);
+       IXGBE_READ_REG(hw, IXGBE_PRC255);
+       IXGBE_READ_REG(hw, IXGBE_PRC511);
+       IXGBE_READ_REG(hw, IXGBE_PRC1023);
+       IXGBE_READ_REG(hw, IXGBE_PRC1522);
+       IXGBE_READ_REG(hw, IXGBE_GPRC);
+       IXGBE_READ_REG(hw, IXGBE_BPRC);
+       IXGBE_READ_REG(hw, IXGBE_MPRC);
+       IXGBE_READ_REG(hw, IXGBE_GPTC);
+       IXGBE_READ_REG(hw, IXGBE_GORCL);
+       IXGBE_READ_REG(hw, IXGBE_GORCH);
+       IXGBE_READ_REG(hw, IXGBE_GOTCL);
+       IXGBE_READ_REG(hw, IXGBE_GOTCH);
+       for (i = 0; i < 8; i++)
+               IXGBE_READ_REG(hw, IXGBE_RNBC(i));
+       IXGBE_READ_REG(hw, IXGBE_RUC);
+       IXGBE_READ_REG(hw, IXGBE_RFC);
+       IXGBE_READ_REG(hw, IXGBE_ROC);
+       IXGBE_READ_REG(hw, IXGBE_RJC);
+       IXGBE_READ_REG(hw, IXGBE_MNGPRC);
+       IXGBE_READ_REG(hw, IXGBE_MNGPDC);
+       IXGBE_READ_REG(hw, IXGBE_MNGPTC);
+       IXGBE_READ_REG(hw, IXGBE_TORL);
+       IXGBE_READ_REG(hw, IXGBE_TORH);
+       IXGBE_READ_REG(hw, IXGBE_TPR);
+       IXGBE_READ_REG(hw, IXGBE_TPT);
+       IXGBE_READ_REG(hw, IXGBE_PTC64);
+       IXGBE_READ_REG(hw, IXGBE_PTC127);
+       IXGBE_READ_REG(hw, IXGBE_PTC255);
+       IXGBE_READ_REG(hw, IXGBE_PTC511);
+       IXGBE_READ_REG(hw, IXGBE_PTC1023);
+       IXGBE_READ_REG(hw, IXGBE_PTC1522);
+       IXGBE_READ_REG(hw, IXGBE_MPTC);
+       IXGBE_READ_REG(hw, IXGBE_BPTC);
+       for (i = 0; i < 16; i++) {
+               IXGBE_READ_REG(hw, IXGBE_QPRC(i));
+               IXGBE_READ_REG(hw, IXGBE_QBRC(i));
+               IXGBE_READ_REG(hw, IXGBE_QPTC(i));
+               IXGBE_READ_REG(hw, IXGBE_QBTC(i));
+       }
+
+       return 0;
+}
+
+/**
+ *  ixgbe_read_pba_num_generic - Reads part number from EEPROM
+ *  @hw: pointer to hardware structure
+ *  @pba_num: stores the part number from the EEPROM
+ *
+ *  Reads the part number from the EEPROM.
+ **/
+s32 ixgbe_read_pba_num_generic(struct ixgbe_hw *hw, u32 *pba_num)
+{
+       s32 ret_val;
+       u16 data;
+
+       ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
+       if (ret_val) {
+               hw_dbg(hw, "NVM Read Error\n");
+               return ret_val;
+       }
+       *pba_num = (u32)(data << 16);
+
+       ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &data);
+       if (ret_val) {
+               hw_dbg(hw, "NVM Read Error\n");
+               return ret_val;
+       }
+       *pba_num |= data;
+
+       return 0;
+}
+
+/**
+ *  ixgbe_get_mac_addr_generic - Generic get MAC address
+ *  @hw: pointer to hardware structure
+ *  @mac_addr: Adapter MAC address
+ *
+ *  Reads the adapter's MAC address from first Receive Address Register (RAR0)
+ *  A reset of the adapter must be performed prior to calling this function
+ *  in order for the MAC address to have been loaded from the EEPROM into RAR0
+ **/
+s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr)
+{
+       u32 rar_high;
+       u32 rar_low;
+       u16 i;
+
+       rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
+       rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
+
+       for (i = 0; i < 4; i++)
+               mac_addr[i] = (u8)(rar_low >> (i*8));
+
+       for (i = 0; i < 2; i++)
+               mac_addr[i+4] = (u8)(rar_high >> (i*8));
+
+       return 0;
+}
+
+/**
+ *  ixgbe_get_bus_info_generic - Generic set PCI bus info
+ *  @hw: pointer to hardware structure
+ *
+ *  Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure
+ **/
+s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
+{
+       struct ixgbe_mac_info *mac = &hw->mac;
+       u16 link_status;
+
+       hw->bus.type = ixgbe_bus_type_pci_express;
+
+       /* Get the negotiated link width and speed from PCI config space */
+       link_status = IXGBE_READ_PCIE_WORD(hw, IXGBE_PCI_LINK_STATUS);
+
+       switch (link_status & IXGBE_PCI_LINK_WIDTH) {
+       case IXGBE_PCI_LINK_WIDTH_1:
+               hw->bus.width = ixgbe_bus_width_pcie_x1;
+               break;
+       case IXGBE_PCI_LINK_WIDTH_2:
+               hw->bus.width = ixgbe_bus_width_pcie_x2;
+               break;
+       case IXGBE_PCI_LINK_WIDTH_4:
+               hw->bus.width = ixgbe_bus_width_pcie_x4;
+               break;
+       case IXGBE_PCI_LINK_WIDTH_8:
+               hw->bus.width = ixgbe_bus_width_pcie_x8;
+               break;
+       default:
+               hw->bus.width = ixgbe_bus_width_unknown;
+               break;
+       }
+
+       switch (link_status & IXGBE_PCI_LINK_SPEED) {
+       case IXGBE_PCI_LINK_SPEED_2500:
+               hw->bus.speed = ixgbe_bus_speed_2500;
+               break;
+       case IXGBE_PCI_LINK_SPEED_5000:
+               hw->bus.speed = ixgbe_bus_speed_5000;
+               break;
+       default:
+               hw->bus.speed = ixgbe_bus_speed_unknown;
+               break;
+       }
+
+       mac->ops.set_lan_id(hw);
+
+       return 0;
+}
+
+/**
+ *  ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple
port devices
+ *  @hw: pointer to the HW structure
+ *
+ *  Determines the LAN function id by reading memory-mapped registers
+ *  and swaps the port value if requested.
+ **/
+void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw)
+{
+       struct ixgbe_bus_info *bus = &hw->bus;
+       u32 reg;
+
+       reg = IXGBE_READ_REG(hw, IXGBE_STATUS);
+       bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT;
+
+       /* check for a port swap */
+       reg = IXGBE_READ_REG(hw, IXGBE_FACTPS);
+       if (reg & IXGBE_FACTPS_LFS)
+               bus->func ^= 0x1;
+}
+
+/**
+ *  ixgbe_stop_adapter_generic - Generic stop Tx/Rx units
+ *  @hw: pointer to hardware structure
+ *
+ *  Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
+ *  disables transmit and receive units. The adapter_stopped flag is used by
+ *  the shared code and drivers to determine if the adapter is in a stopped
+ *  state and should not touch the hardware.
+ **/
+s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
+{
+       u32 number_of_queues;
+       u32 reg_val;
+       u16 i;
+
+       /*
+        * Set the adapter_stopped flag so other driver functions stop touching
+        * the hardware
+        */
+       hw->adapter_stopped = true;
+
+       /* Disable the receive unit */
+       reg_val = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
+       reg_val &= ~(IXGBE_RXCTRL_RXEN);
+       IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, reg_val);
+       IXGBE_WRITE_FLUSH(hw);
+       msleep(2);
+
+       /* Clear interrupt mask to stop from interrupts being generated */
+       IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
+
+       /* Clear any pending interrupts */
+       IXGBE_READ_REG(hw, IXGBE_EICR);
+
+       /* Disable the transmit unit.  Each queue must be disabled. */
+       number_of_queues = hw->mac.max_tx_queues;
+       for (i = 0; i < number_of_queues; i++) {
+               reg_val = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
+               if (reg_val & IXGBE_TXDCTL_ENABLE) {
+                       reg_val &= ~IXGBE_TXDCTL_ENABLE;
+                       IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), reg_val);
+               }
+       }
+
+       /*
+        * Prevent the PCI-E bus from from hanging by disabling PCI-E master
+        * access and verify no pending requests
+        */
+       if (ixgbe_disable_pcie_master(hw) != 0)
+               hw_dbg(hw, "PCI-E Master disable polling has failed.\n");
+
+       return 0;
+}
+
+/**
+ *  ixgbe_led_on_generic - Turns on the software controllable LEDs.
+ *  @hw: pointer to hardware structure
+ *  @index: led number to turn on
+ **/
+s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index)
+{
+       u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
+
+       /* To turn on the LED, set mode to ON. */
+       led_reg &= ~IXGBE_LED_MODE_MASK(index);
+       led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
+       IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
+       IXGBE_WRITE_FLUSH(hw);
+
+       return 0;
+}
+
+/**
+ *  ixgbe_led_off_generic - Turns off the software controllable LEDs.
+ *  @hw: pointer to hardware structure
+ *  @index: led number to turn off
+ **/
+s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index)
+{
+       u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
+
+       /* To turn off the LED, set mode to OFF. */
+       led_reg &= ~IXGBE_LED_MODE_MASK(index);
+       led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
+       IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
+       IXGBE_WRITE_FLUSH(hw);
+
+       return 0;
+}
+
+/**
+ *  ixgbe_init_eeprom_params_generic - 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.
+ **/
+s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
+{
+       struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
+       u32 eec;
+       u16 eeprom_size;
+
+       if (eeprom->type == ixgbe_eeprom_uninitialized) {
+               eeprom->type = ixgbe_eeprom_none;
+               /* Set default semaphore delay to 10ms which is a well
+                * tested value */
+               eeprom->semaphore_delay = 10;
+
+               /*
+                * Check for EEPROM present first.
+                * If not present leave as none
+                */
+               eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+               if (eec & IXGBE_EEC_PRES) {
+                       eeprom->type = ixgbe_eeprom_spi;
+
+                       /*
+                        * SPI EEPROM is assumed here.  This code would need to
+                        * change if a future EEPROM is not SPI.
+                        */
+                       eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
+                                           IXGBE_EEC_SIZE_SHIFT);
+                       eeprom->word_size = 1 << (eeprom_size +
+                                                IXGBE_EEPROM_WORD_SIZE_SHIFT);
+               }
+
+               if (eec & IXGBE_EEC_ADDR_SIZE)
+                       eeprom->address_bits = 16;
+               else
+                       eeprom->address_bits = 8;
+               hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: "
+                         "%d\n", eeprom->type, eeprom->word_size,
+                         eeprom->address_bits);
+       }
+
+       return 0;
+}
+
+/**
+ *  ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
+ *  @hw: pointer to hardware structure
+ *  @offset: offset within the EEPROM to be written to
+ *  @data: 16 bit word to be written to the EEPROM
+ *
+ *  If ixgbe_eeprom_update_checksum is not called after this function, the
+ *  EEPROM will most likely contain an invalid checksum.
+ **/
+s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
+{
+       s32 status;
+       u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
+
+       hw->eeprom.ops.init_params(hw);
+
+       if (offset >= hw->eeprom.word_size) {
+               status = IXGBE_ERR_EEPROM;
+               goto out;
+       }
+
+       /* Prepare the EEPROM for writing  */
+       status = ixgbe_acquire_eeprom(hw);
+
+       if (status == 0) {
+               if (ixgbe_ready_eeprom(hw) != 0) {
+                       ixgbe_release_eeprom(hw);
+                       status = IXGBE_ERR_EEPROM;
+               }
+       }
+
+       if (status == 0) {
+               ixgbe_standby_eeprom(hw);
+
+               /*  Send the WRITE ENABLE command (8 bit opcode )  */
+               ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_WREN_OPCODE_SPI,
+                                           IXGBE_EEPROM_OPCODE_BITS);
+
+               ixgbe_standby_eeprom(hw);
+
+               /*
+                * Some SPI eeproms use the 8th address bit embedded in the
+                * opcode
+                */
+               if ((hw->eeprom.address_bits == 8) && (offset >= 128))
+                       write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
+
+               /* Send the Write command (8-bit opcode + addr) */
+               ixgbe_shift_out_eeprom_bits(hw, write_opcode,
+                                           IXGBE_EEPROM_OPCODE_BITS);
+               ixgbe_shift_out_eeprom_bits(hw, (u16)(offset*2),
+                                           hw->eeprom.address_bits);
+
+               /* Send the data */
+               data = (data >> 8) | (data << 8);
+               ixgbe_shift_out_eeprom_bits(hw, data, 16);
+               ixgbe_standby_eeprom(hw);
+
+               msleep(hw->eeprom.semaphore_delay);
+               /* Done with writing - release the EEPROM */
+               ixgbe_release_eeprom(hw);
+       }
+
+out:
+       return status;
+}
+
+/**
+ *  ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
+ *  @hw: pointer to hardware structure
+ *  @offset: offset within the EEPROM to be read
+ *  @data: read 16 bit value from EEPROM
+ *
+ *  Reads 16 bit value from EEPROM through bit-bang method
+ **/
+s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
+                                       u16 *data)
+{
+       s32 status;
+       u16 word_in;
+       u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
+
+       hw->eeprom.ops.init_params(hw);
+
+       if (offset >= hw->eeprom.word_size) {
+               status = IXGBE_ERR_EEPROM;
+               goto out;
+       }
+
+       /* Prepare the EEPROM for reading  */
+       status = ixgbe_acquire_eeprom(hw);
+
+       if (status == 0) {
+               if (ixgbe_ready_eeprom(hw) != 0) {
+                       ixgbe_release_eeprom(hw);
+                       status = IXGBE_ERR_EEPROM;
+               }
+       }
+
+       if (status == 0) {
+               ixgbe_standby_eeprom(hw);
+
+               /*
+                * Some SPI eeproms use the 8th address bit embedded in the
+                * opcode
+                */
+               if ((hw->eeprom.address_bits == 8) && (offset >= 128))
+                       read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
+
+               /* Send the READ command (opcode + addr) */
+               ixgbe_shift_out_eeprom_bits(hw, read_opcode,
+                                           IXGBE_EEPROM_OPCODE_BITS);
+               ixgbe_shift_out_eeprom_bits(hw, (u16)(offset*2),
+                                           hw->eeprom.address_bits);
+
+               /* Read the data. */
+               word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
+               *data = (word_in >> 8) | (word_in << 8);
+
+               /* End this read operation */
+               ixgbe_release_eeprom(hw);
+       }
+
+out:
+       return status;
+}
+
+/**
+ *  ixgbe_read_eeprom_generic - 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.
+ **/
+s32 ixgbe_read_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
+{
+       u32 eerd;
+       s32 status;
+
+       hw->eeprom.ops.init_params(hw);
+
+       if (offset >= hw->eeprom.word_size) {
+               status = IXGBE_ERR_EEPROM;
+               goto out;
+       }
+
+       eerd = (offset << IXGBE_EEPROM_READ_ADDR_SHIFT) +
+              IXGBE_EEPROM_READ_REG_START;
+
+       IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
+       status = ixgbe_poll_eeprom_eerd_done(hw);
+
+       if (status == 0)
+               *data = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
+                        IXGBE_EEPROM_READ_REG_DATA);
+       else
+               hw_dbg(hw, "Eeprom read timed out\n");
+
+out:
+       return status;
+}
+
+/**
+ *  ixgbe_poll_eeprom_eerd_done - Poll EERD status
+ *  @hw: pointer to hardware structure
+ *
+ *  Polls the status bit (bit 1) of the EERD to determine when the
read is done.
+ **/
+static s32 ixgbe_poll_eeprom_eerd_done(struct ixgbe_hw *hw)
+{
+       u32 i;
+       u32 reg;
+       s32 status = IXGBE_ERR_EEPROM;
+
+       for (i = 0; i < IXGBE_EERD_ATTEMPTS; i++) {
+               reg = IXGBE_READ_REG(hw, IXGBE_EERD);
+               if (reg & IXGBE_EEPROM_READ_REG_DONE) {
+                       status = 0;
+                       break;
+               }
+               udelay(5);
+       }
+       return status;
+}
+
+/**
+ *  ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang
+ *  @hw: pointer to hardware structure
+ *
+ *  Prepares EEPROM for access using bit-bang method. This function should
+ *  be called before issuing a command to the EEPROM.
+ **/
+static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
+{
+       s32 status = 0;
+       u32 eec;
+       u32 i;
+
+       if (ixgbe_acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0)
+               status = IXGBE_ERR_SWFW_SYNC;
+
+       if (status == 0) {
+               eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+
+               /* Request EEPROM Access */
+               eec |= IXGBE_EEC_REQ;
+               IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
+
+               for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
+                       eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+                       if (eec & IXGBE_EEC_GNT)
+                               break;
+                       udelay(5);
+               }
+
+               /* Release if grant not acquired */
+               if (!(eec & IXGBE_EEC_GNT)) {
+                       eec &= ~IXGBE_EEC_REQ;
+                       IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
+                       hw_dbg(hw, "Could not acquire EEPROM grant\n");
+
+                       ixgbe_release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
+                       status = IXGBE_ERR_EEPROM;
+               }
+       }
+
+       /* Setup EEPROM for Read/Write */
+       if (status == 0) {
+               /* Clear CS and SK */
+               eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
+               IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
+               IXGBE_WRITE_FLUSH(hw);
+               udelay(1);
+       }
+       return status;
+}
+
+/**
+ *  ixgbe_get_eeprom_semaphore - Get hardware semaphore
+ *  @hw: pointer to hardware structure
+ *
+ *  Sets the hardware semaphores so EEPROM access can occur for bit-bang method
+ **/
+static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
+{
+       s32 status = IXGBE_ERR_EEPROM;
+       u32 timeout;
+       u32 i;
+       u32 swsm;
+
+       /* Set timeout value based on size of EEPROM */
+       timeout = hw->eeprom.word_size + 1;
+
+       /* 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 = 0;
+                       break;
+               }
+               msleep(1);
+       }
+
+       /* Now get the semaphore between SW/FW through the SWESMBI bit */
+       if (status == 0) {
+               for (i = 0; i < timeout; i++) {
+                       swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
+
+                       /* Set the SW EEPROM semaphore bit to request access */
+                       swsm |= IXGBE_SWSM_SWESMBI;
+                       IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
+
+                       /*
+                        * If we set the bit successfully then we got the
+                        * semaphore.
+                        */
+                       swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
+                       if (swsm & IXGBE_SWSM_SWESMBI)
+                               break;
+
+                       udelay(50);
+               }
+
+               /*
+                * Release semaphores and return error if SW EEPROM semaphore
+                * was not granted because we don't have access to the EEPROM
+                */
+               if (i >= timeout) {
+                       hw_dbg(hw, "Driver can't access the Eeprom - Semaphore "
+                                "not granted.\n");
+                       ixgbe_release_eeprom_semaphore(hw);
+                       status = IXGBE_ERR_EEPROM;
+               }
+       }
+
+       return status;
+}
+
+/**
+ *  ixgbe_release_eeprom_semaphore - Release hardware semaphore
+ *  @hw: pointer to hardware structure
+ *
+ *  This function clears hardware semaphore bits.
+ **/
+static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
+{
+       u32 swsm;
+
+       swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
+
+       /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
+       swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
+       IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
+       IXGBE_WRITE_FLUSH(hw);
+}
+
+/**
+ *  ixgbe_ready_eeprom - Polls for EEPROM ready
+ *  @hw: pointer to hardware structure
+ **/
+static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
+{
+       s32 status = 0;
+       u16 i;
+       u8 spi_stat_reg;
+
+       /*
+        * Read "Status Register" repeatedly until the LSB is cleared.  The
+        * EEPROM will signal that the command has been completed by clearing
+        * bit 0 of the internal status register.  If it's not cleared within
+        * 5 milliseconds, then error out.
+        */
+       for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) {
+               ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI,
+                                           IXGBE_EEPROM_OPCODE_BITS);
+               spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8);
+               if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI))
+                       break;
+
+               udelay(5);
+               ixgbe_standby_eeprom(hw);
+       };
+
+       /*
+        * On some parts, SPI write time could vary from 0-20mSec on 3.3V
+        * devices (and only 0-5mSec on 5V devices)
+        */
+       if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
+               hw_dbg(hw, "SPI EEPROM Status error\n");
+               status = IXGBE_ERR_EEPROM;
+       }
+
+       return status;
+}
+
+/**
+ *  ixgbe_standby_eeprom - Returns EEPROM to a "standby" state
+ *  @hw: pointer to hardware structure
+ **/
+static void ixgbe_standby_eeprom(struct ixgbe_hw *hw)
+{
+       u32 eec;
+
+       eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+
+       /* Toggle CS to flush commands */
+       eec |= IXGBE_EEC_CS;
+       IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
+       IXGBE_WRITE_FLUSH(hw);
+       udelay(1);
+       eec &= ~IXGBE_EEC_CS;
+       IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
+       IXGBE_WRITE_FLUSH(hw);
+       udelay(1);
+}
+
+/**
+ *  ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM.
+ *  @hw: pointer to hardware structure
+ *  @data: data to send to the EEPROM
+ *  @count: number of bits to shift out
+ **/
+static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
+                                        u16 count)
+{
+       u32 eec;
+       u32 mask;
+       u32 i;
+
+       eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+
+       /*
+        * Mask is used to shift "count" bits of "data" out to the EEPROM
+        * one bit at a time.  Determine the starting bit based on count
+        */
+       mask = 0x01 << (count - 1);
+
+       for (i = 0; i < count; i++) {
+               /*
+                * A "1" is shifted out to the EEPROM by setting bit "DI" to a
+                * "1", and then raising and then lowering the clock (the SK
+                * bit controls the clock input to the EEPROM).  A "0" is
+                * shifted out to the EEPROM by setting "DI" to "0" and then
+                * raising and then lowering the clock.
+                */
+               if (data & mask)
+                       eec |= IXGBE_EEC_DI;
+               else
+                       eec &= ~IXGBE_EEC_DI;
+
+               IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
+               IXGBE_WRITE_FLUSH(hw);
+
+               udelay(1);
+
+               ixgbe_raise_eeprom_clk(hw, &eec);
+               ixgbe_lower_eeprom_clk(hw, &eec);
+
+               /*
+                * Shift mask to signify next bit of data to shift in to the
+                * EEPROM
+                */
+               mask = mask >> 1;
+       };
+
+       /* We leave the "DI" bit set to "0" when we leave this routine. */
+       eec &= ~IXGBE_EEC_DI;
+       IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
+       IXGBE_WRITE_FLUSH(hw);
+}
+
+/**
+ *  ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM
+ *  @hw: pointer to hardware structure
+ **/
+static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count)
+{
+       u32 eec;
+       u32 i;
+       u16 data = 0;
+
+       /*
+        * In order to read a register from the EEPROM, we need to shift
+        * 'count' bits in from the EEPROM. Bits are "shifted in" by raising
+        * the clock input to the EEPROM (setting the SK bit), and then reading
+        * the value of the "DO" bit.  During this "shifting in" process the
+        * "DI" bit should always be clear.
+        */
+       eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+
+       eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI);
+
+       for (i = 0; i < count; i++) {
+               data = data << 1;
+               ixgbe_raise_eeprom_clk(hw, &eec);
+
+               eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+
+               eec &= ~(IXGBE_EEC_DI);
+               if (eec & IXGBE_EEC_DO)
+                       data |= 1;
+
+               ixgbe_lower_eeprom_clk(hw, &eec);
+       }
+
+       return data;
+}
+
+/**
+ *  ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input.
+ *  @hw: pointer to hardware structure
+ *  @eec: EEC register's current value
+ **/
+static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
+{
+       /*
+        * Raise the clock input to the EEPROM
+        * (setting the SK bit), then delay
+        */
+       *eec = *eec | IXGBE_EEC_SK;
+       IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
+       IXGBE_WRITE_FLUSH(hw);
+       udelay(1);
+}
+
+/**
+ *  ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input.
+ *  @hw: pointer to hardware structure
+ *  @eecd: EECD's current value
+ **/
+static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
+{
+       /*
+        * Lower the clock input to the EEPROM (clearing the SK bit), then
+        * delay
+        */
+       *eec = *eec & ~IXGBE_EEC_SK;
+       IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
+       IXGBE_WRITE_FLUSH(hw);
+       udelay(1);
+}
+
+/**
+ *  ixgbe_release_eeprom - Release EEPROM, release semaphores
+ *  @hw: pointer to hardware structure
+ **/
+static void ixgbe_release_eeprom(struct ixgbe_hw *hw)
+{
+       u32 eec;
+
+       eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+
+       eec |= IXGBE_EEC_CS;  /* Pull CS high */
+       eec &= ~IXGBE_EEC_SK; /* Lower SCK */
+
+       IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
+       IXGBE_WRITE_FLUSH(hw);
+
+       udelay(1);
+
+       /* Stop requesting EEPROM access */
+       eec &= ~IXGBE_EEC_REQ;
+       IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
+
+       ixgbe_release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
+}
+
+/**
+ *  ixgbe_calc_eeprom_checksum - Calculates and returns the checksum
+ *  @hw: pointer to hardware structure
+ **/
+static u16 ixgbe_calc_eeprom_checksum(struct ixgbe_hw *hw)
+{
+       u16 i;
+       u16 j;
+       u16 checksum = 0;
+       u16 length = 0;
+       u16 pointer = 0;
+       u16 word = 0;
+
+       /* Include 0x0-0x3F in the checksum */
+       for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
+               if (hw->eeprom.ops.read(hw, i, &word) != 0) {
+                       hw_dbg(hw, "EEPROM read failed\n");
+                       break;
+               }
+               checksum += word;
+       }
+
+       /* Include all data from pointers except for the fw pointer */
+       for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
+               hw->eeprom.ops.read(hw, i, &pointer);
+
+               /* Make sure the pointer seems valid */
+               if (pointer != 0xFFFF && pointer != 0) {
+                       hw->eeprom.ops.read(hw, pointer, &length);
+
+                       if (length != 0xFFFF && length != 0) {
+                               for (j = pointer+1; j <= pointer+length; j++) {
+                                       hw->eeprom.ops.read(hw, j, &word);
+                                       checksum += word;
+                               }
+                       }
+               }
+       }
+
+       checksum = (u16)IXGBE_EEPROM_SUM - checksum;
+
+       return checksum;
+}
+
+/**
+ *  ixgbe_validate_eeprom_checksum_generic - 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.
+ **/
+s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
+                                           u16 *checksum_val)
+{
+       s32 status;
+       u16 checksum;
+       u16 read_checksum = 0;
+
+       /*
+        * 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 == 0) {
+               checksum = ixgbe_calc_eeprom_checksum(hw);
+
+               hw->eeprom.ops.read(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 {
+               hw_dbg(hw, "EEPROM read failed\n");
+       }
+
+       return status;
+}
+
+/**
+ *  ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum
+ *  @hw: pointer to hardware structure
+ **/
+s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw)
+{
+       s32 status;
+       u16 checksum;
+
+       /*
+        * 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 == 0) {
+               checksum = ixgbe_calc_eeprom_checksum(hw);
+               status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM,
+                                             checksum);
+       } else {
+               hw_dbg(hw, "EEPROM read failed\n");
+       }
+
+       return status;
+}
+
+/**
+ *  ixgbe_validate_mac_addr - Validate MAC address
+ *  @mac_addr: pointer to MAC address.
+ *
+ *  Tests a MAC address to ensure it is a valid Individual Address
+ **/
+s32 ixgbe_validate_mac_addr(u8 *mac_addr)
+{
+       s32 status = 0;
+
+       /* Make sure it is not a multicast address */
+       if (IXGBE_IS_MULTICAST(mac_addr)) {
+               hw_dbg(hw, "MAC address is multicast\n");
+               status = IXGBE_ERR_INVALID_MAC_ADDR;
+       /* Not a broadcast address */
+       } else if (IXGBE_IS_BROADCAST(mac_addr)) {
+               hw_dbg(hw, "MAC address is broadcast\n");
+               status = IXGBE_ERR_INVALID_MAC_ADDR;
+       /* Reject the zero address */
+       } else if (mac_addr[0] == 0 && mac_addr[1] == 0 && mac_addr[2] == 0 &&
+                  mac_addr[3] == 0 && mac_addr[4] == 0 && mac_addr[5] == 0) {
+               hw_dbg(hw, "MAC address is all zeros\n");
+               status = IXGBE_ERR_INVALID_MAC_ADDR;
+       }
+       return status;
+}
+
+/**
+ *  ixgbe_set_rar_generic - Set Rx address register
+ *  @hw: pointer to hardware structure
+ *  @index: Receive address register to write
+ *  @addr: Address to put into receive address register
+ *  @vmdq: VMDq "set" or "pool" index
+ *  @enable_addr: set flag that address is active
+ *
+ *  Puts an ethernet address into a receive address register.
+ **/
+s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
+                          u32 enable_addr)
+{
+       u32 rar_low, rar_high;
+       u32 rar_entries = hw->mac.num_rar_entries;
+
+       /* setup VMDq pool selection before this RAR gets enabled */
+       hw->mac.ops.set_vmdq(hw, index, vmdq);
+
+       /* Make sure we are using a valid rar index range */
+       if (index < rar_entries) {
+               /*
+                * HW expects these in little endian so we reverse the byte
+                * order from network order (big endian) to little endian
+                */
+               rar_low = ((u32)addr[0] |
+                          ((u32)addr[1] << 8) |
+                          ((u32)addr[2] << 16) |
+                          ((u32)addr[3] << 24));
+               /*
+                * Some parts put the VMDq setting in the extra RAH bits,
+                * so save everything except the lower 16 bits that hold part
+                * of the address and the address valid bit.
+                */
+               rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
+               rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
+               rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8));
+
+               if (enable_addr != 0)
+                       rar_high |= IXGBE_RAH_AV;
+
+               IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
+               IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
+       } else {
+               hw_dbg(hw, "RAR index %d is out of range.\n", index);
+       }
+
+       return 0;
+}
+
+/**
+ *  ixgbe_clear_rar_generic - Remove Rx address register
+ *  @hw: pointer to hardware structure
+ *  @index: Receive address register to write
+ *
+ *  Clears an ethernet address from a receive address register.
+ **/
+s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
+{
+       u32 rar_high;
+       u32 rar_entries = hw->mac.num_rar_entries;
+
+       /* Make sure we are using a valid rar index range */
+       if (index < rar_entries) {
+               /*
+                * Some parts put the VMDq setting in the extra RAH bits,
+                * so save everything except the lower 16 bits that hold part
+                * of the address and the address valid bit.
+                */
+               rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
+               rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
+
+               IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
+               IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
+       } else {
+               hw_dbg(hw, "RAR index %d is out of range.\n", index);
+       }
+
+       /* clear VMDq pool/queue selection for this RAR */
+       hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
+
+       return 0;
+}
+
+/**
+ *  ixgbe_enable_rar - Enable Rx address register
+ *  @hw: pointer to hardware structure
+ *  @index: index into the RAR table
+ *
+ *  Enables the select receive address register.
+ **/
+static void ixgbe_enable_rar(struct ixgbe_hw *hw, u32 index)
+{
+       u32 rar_high;
+
+       rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
+       rar_high |= IXGBE_RAH_AV;
+       IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
+}
+
+/**
+ *  ixgbe_disable_rar - Disable Rx address register
+ *  @hw: pointer to hardware structure
+ *  @index: index into the RAR table
+ *
+ *  Disables the select receive address register.
+ **/
+static void ixgbe_disable_rar(struct ixgbe_hw *hw, u32 index)
+{
+       u32 rar_high;
+
+       rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
+       rar_high &= (~IXGBE_RAH_AV);
+       IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
+}
+
+/**
+ *  ixgbe_init_rx_addrs_generic - Initializes receive address filters.
+ *  @hw: pointer to hardware structure
+ *
+ *  Places the MAC address in receive address register 0 and clears the rest
+ *  of the receive address registers. Clears the multicast table. Assumes
+ *  the receiver is in reset when the routine is called.
+ **/
+s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw)
+{
+       u32 i;
+       u32 rar_entries = hw->mac.num_rar_entries;
+
+       /*
+        * If the current mac address is valid, assume it is a software override
+        * to the permanent address.
+        * Otherwise, use the permanent address from the eeprom.
+        */
+       if (ixgbe_validate_mac_addr(hw->mac.addr) ==
+           IXGBE_ERR_INVALID_MAC_ADDR) {
+               /* Get the MAC address from the RAR0 for later reference */
+               hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
+
+               hw_dbg(hw, " Keeping Current RAR0 Addr =%.2X %.2X %.2X ",
+                         hw->mac.addr[0], hw->mac.addr[1],
+                         hw->mac.addr[2]);
+               hw_dbg(hw, "%.2X %.2X %.2X\n", hw->mac.addr[3],
+                         hw->mac.addr[4], hw->mac.addr[5]);
+       } else {
+               /* Setup the receive address. */
+               hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
+               hw_dbg(hw, " New MAC Addr =%.2X %.2X %.2X ",
+                         hw->mac.addr[0], hw->mac.addr[1],
+                         hw->mac.addr[2]);
+               hw_dbg(hw, "%.2X %.2X %.2X\n", hw->mac.addr[3],
+                         hw->mac.addr[4], hw->mac.addr[5]);
+
+               hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
+       }
+       hw->addr_ctrl.overflow_promisc = 0;
+
+       hw->addr_ctrl.rar_used_count = 1;
+
+       /* Zero out the other receive addresses. */
+       hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1);
+       for (i = 1; i < rar_entries; i++) {
+               IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
+               IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
+       }
+
+       /* Clear the MTA */
+       hw->addr_ctrl.mc_addr_in_rar_count = 0;
+       hw->addr_ctrl.mta_in_use = 0;
+       IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
+
+       hw_dbg(hw, " Clearing MTA\n");
+       for (i = 0; i < hw->mac.mcft_size; i++)
+               IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
+
+       ixgbe_init_uta_tables(hw);
+
+       return 0;
+}
+
+/**
+ *  ixgbe_add_uc_addr - Adds a secondary unicast address.
+ *  @hw: pointer to hardware structure
+ *  @addr: new address
+ *
+ *  Adds it to unused receive address register or goes into promiscuous mode.
+ **/
+void ixgbe_add_uc_addr(struct ixgbe_hw *hw, u8 *addr, u32 vmdq)
+{
+       u32 rar_entries = hw->mac.num_rar_entries;
+       u32 rar;
+
+       hw_dbg(hw, " UC Addr = %.2X %.2X %.2X %.2X %.2X %.2X\n",
+                 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
+
+       /*
+        * Place this address in the RAR if there is room,
+        * else put the controller into promiscuous mode
+        */
+       if (hw->addr_ctrl.rar_used_count < rar_entries) {
+               rar = hw->addr_ctrl.rar_used_count -
+                     hw->addr_ctrl.mc_addr_in_rar_count;
+               hw->mac.ops.set_rar(hw, rar, addr, vmdq, IXGBE_RAH_AV);
+               hw_dbg(hw, "Added a secondary address to RAR[%d]\n", rar);
+               hw->addr_ctrl.rar_used_count++;
+       } else {
+               hw->addr_ctrl.overflow_promisc++;
+       }
+
+       hw_dbg(hw, "ixgbe_add_uc_addr Complete\n");
+}
+
+/**
+ *  ixgbe_update_uc_addr_list_generic - Updates MAC list of secondary addresses
+ *  @hw: pointer to hardware structure
+ *  @addr_list: the list of new addresses
+ *  @addr_count: number of addresses
+ *  @next: iterator function to walk the address list
+ *
+ *  The given list replaces any existing list.  Clears the secondary addrs from
+ *  receive address registers.  Uses unused receive address registers for the
+ *  first secondary addresses, and falls back to promiscuous mode as needed.
+ *
+ *  Drivers using secondary unicast addresses must set user_set_promisc when
+ *  manually putting the device into promiscuous mode.
+ **/
+s32 ixgbe_update_uc_addr_list_generic(struct ixgbe_hw *hw, u8 *addr_list,
+                                      u32 addr_count, ixgbe_mc_addr_itr next)
+{
+       u8 *addr;
+       u32 i;
+       u32 old_promisc_setting = hw->addr_ctrl.overflow_promisc;
+       u32 uc_addr_in_use;
+       u32 fctrl;
+       u32 vmdq;
+
+       /*
+        * Clear accounting of old secondary address list,
+        * don't count RAR[0]
+        */
+       uc_addr_in_use = hw->addr_ctrl.rar_used_count -
+                        hw->addr_ctrl.mc_addr_in_rar_count - 1;
+       hw->addr_ctrl.rar_used_count -= uc_addr_in_use;
+       hw->addr_ctrl.overflow_promisc = 0;
+
+       /* Zero out the other receive addresses */
+       hw_dbg(hw, "Clearing RAR[1-%d]\n", uc_addr_in_use);
+       for (i = 1; i <= uc_addr_in_use; i++) {
+               IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
+               IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
+       }
+
+       /* Add the new addresses */
+       for (i = 0; i < addr_count; i++) {
+               hw_dbg(hw, " Adding the secondary addresses:\n");
+               addr = next(hw, &addr_list, &vmdq);
+               ixgbe_add_uc_addr(hw, addr, vmdq);
+       }
+
+       if (hw->addr_ctrl.overflow_promisc) {
+               /* enable promisc if not already in overflow or set by user */
+               if (!old_promisc_setting && !hw->addr_ctrl.user_set_promisc) {
+                       hw_dbg(hw, " Entering address overflow promisc mode\n");
+                       fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
+                       fctrl |= IXGBE_FCTRL_UPE;
+                       IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
+               }
+       } else {
+               /* only disable if set by overflow, not by user */
+               if (old_promisc_setting && !hw->addr_ctrl.user_set_promisc) {
+                       hw_dbg(hw, " Leaving address overflow promisc mode\n");
+                       fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
+                       fctrl &= ~IXGBE_FCTRL_UPE;
+                       IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
+               }
+       }
+
+       hw_dbg(hw, "ixgbe_update_uc_addr_list_generic Complete\n");
+       return 0;
+}
+
+/**
+ *  ixgbe_mta_vector - Determines bit-vector in multicast table to set
+ *  @hw: pointer to hardware structure
+ *  @mc_addr: the multicast address
+ *
+ *  Extracts the 12 bits, from a multicast address, to determine which
+ *  bit-vector to set in the multicast table. The hardware uses 12 bits, from
+ *  incoming rx multicast addresses, to determine the bit-vector to check in
+ *  the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
+ *  by the MO field of the MCSTCTRL. The MO field is set during initialization
+ *  to mc_filter_type.
+ **/
+static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
+{
+       u32 vector = 0;
+
+       switch (hw->mac.mc_filter_type) {
+       case 0:   /* use bits [47:36] of the address */
+               vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
+               break;
+       case 1:   /* use bits [46:35] of the address */
+               vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
+               break;
+       case 2:   /* use bits [45:34] of the address */
+               vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
+               break;
+       case 3:   /* use bits [43:32] of the address */
+               vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
+               break;
+       default:  /* Invalid mc_filter_type */
+               hw_dbg(hw, "MC filter type param set incorrectly\n");
+               break;
+       }
+
+       /* vector can only be 12-bits or boundary will be exceeded */
+       vector &= 0xFFF;
+       return vector;
+}
+
+/**
+ *  ixgbe_set_mta - Set bit-vector in multicast table
+ *  @hw: pointer to hardware structure
+ *  @hash_value: Multicast address hash value
+ *
+ *  Sets the bit-vector in the multicast table.
+ **/
+void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
+{
+       u32 vector;
+       u32 vector_bit;
+       u32 vector_reg;
+       u32 mta_reg;
+
+       hw->addr_ctrl.mta_in_use++;
+
+       vector = ixgbe_mta_vector(hw, mc_addr);
+       hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
+
+       /*
+        * The MTA is a register array of 128 32-bit registers. It is treated
+        * like an array of 4096 bits.  We want to set bit
+        * BitArray[vector_value]. So we figure out what register the bit is
+        * in, read it, OR in the new bit, then write back the new value.  The
+        * register is determined by the upper 7 bits of the vector value and
+        * the bit within that register are determined by the lower 5 bits of
+        * the value.
+        */
+       vector_reg = (vector >> 5) & 0x7F;
+       vector_bit = vector & 0x1F;
+       mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
+       mta_reg |= (1 << vector_bit);
+       IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
+}
+
+/**
+ *  ixgbe_add_mc_addr - Adds a multicast address.
+ *  @hw: pointer to hardware structure
+ *  @mc_addr: new multicast address
+ *
+ *  Adds it to unused receive address register or to the multicast table.
+ **/
+void ixgbe_add_mc_addr(struct ixgbe_hw *hw, u8 *mc_addr)
+{
+       u32 rar_entries = hw->mac.num_rar_entries;
+       u32 rar;
+
+       hw_dbg(hw, " MC Addr =%.2X %.2X %.2X %.2X %.2X %.2X\n",
+                 mc_addr[0], mc_addr[1], mc_addr[2],
+                 mc_addr[3], mc_addr[4], mc_addr[5]);
+
+       /*
+        * Place this multicast address in the RAR if there is room,
+        * else put it in the MTA
+        */
+       if (hw->addr_ctrl.rar_used_count < rar_entries) {
+               /* use RAR from the end up for multicast */
+               rar = rar_entries - hw->addr_ctrl.mc_addr_in_rar_count - 1;
+               hw->mac.ops.set_rar(hw, rar, mc_addr, 0, IXGBE_RAH_AV);
+               hw_dbg(hw, "Added a multicast address to RAR[%d]\n", rar);
+               hw->addr_ctrl.rar_used_count++;
+               hw->addr_ctrl.mc_addr_in_rar_count++;
+       } else {
+               ixgbe_set_mta(hw, mc_addr);
+       }
+
+       hw_dbg(hw, "ixgbe_add_mc_addr Complete\n");
+}
+
+/**
+ *  ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses
+ *  @hw: pointer to hardware structure
+ *  @mc_addr_list: the list of new multicast addresses
+ *  @mc_addr_count: number of addresses
+ *  @next: iterator function to walk the multicast address list
+ *
+ *  The given list replaces any existing list. Clears the MC addrs from receive
+ *  address registers and the multicast table. Uses unused receive address
+ *  registers for the first multicast addresses, and hashes the rest into the
+ *  multicast table.
+ **/
+s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw, u8 *mc_addr_list,
+                                      u32 mc_addr_count,
ixgbe_mc_addr_itr next)
+{
+       u32 i;
+       u32 rar_entries = hw->mac.num_rar_entries;
+       u32 vmdq;
+
+       /*
+        * Set the new number of MC addresses that we are being requested to
+        * use.
+        */
+       hw->addr_ctrl.num_mc_addrs = mc_addr_count;
+       hw->addr_ctrl.rar_used_count -= hw->addr_ctrl.mc_addr_in_rar_count;
+       hw->addr_ctrl.mc_addr_in_rar_count = 0;
+       hw->addr_ctrl.mta_in_use = 0;
+
+       /* Zero out the other receive addresses. */
+       hw_dbg(hw, "Clearing RAR[%d-%d]\n", hw->addr_ctrl.rar_used_count,
+                 rar_entries - 1);
+       for (i = hw->addr_ctrl.rar_used_count; i < rar_entries; i++) {
+               IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
+               IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
+       }
+
+       /* Clear the MTA */
+       hw_dbg(hw, " Clearing MTA\n");
+       for (i = 0; i < hw->mac.mcft_size; i++)
+               IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
+
+       /* Add the new addresses */
+       for (i = 0; i < mc_addr_count; i++) {
+               hw_dbg(hw, " Adding the multicast addresses:\n");
+               ixgbe_add_mc_addr(hw, next(hw, &mc_addr_list, &vmdq));
+       }
+
+       /* Enable mta */
+       if (hw->addr_ctrl.mta_in_use > 0)
+               IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
+                               IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
+
+       hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n");
+       return 0;
+}
+
+/**
+ *  ixgbe_enable_mc_generic - Enable multicast address in RAR
+ *  @hw: pointer to hardware structure
+ *
+ *  Enables multicast address in RAR and the use of the multicast hash table.
+ **/
+s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw)
+{
+       u32 i;
+       u32 rar_entries = hw->mac.num_rar_entries;
+       struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
+
+       if (a->mc_addr_in_rar_count > 0)
+               for (i = (rar_entries - a->mc_addr_in_rar_count);
+                    i < rar_entries; i++)
+                       ixgbe_enable_rar(hw, i);
+
+       if (a->mta_in_use > 0)
+               IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE |
+                               hw->mac.mc_filter_type);
+
+       return 0;
+}
+
+/**
+ *  ixgbe_disable_mc_generic - Disable multicast address in RAR
+ *  @hw: pointer to hardware structure
+ *
+ *  Disables multicast address in RAR and the use of the multicast hash table.
+ **/
+s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
+{
+       u32 i;
+       u32 rar_entries = hw->mac.num_rar_entries;
+       struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
+
+       if (a->mc_addr_in_rar_count > 0)
+               for (i = (rar_entries - a->mc_addr_in_rar_count);
+                    i < rar_entries; i++)
+                       ixgbe_disable_rar(hw, i);
+
+       if (a->mta_in_use > 0)
+               IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
+
+       return 0;
+}
+
+
+
+
+/**
+ *  ixgbe_disable_pcie_master - Disable PCI-express master access
+ *  @hw: pointer to hardware structure
+ *
+ *  Disables PCI-Express master access and verifies there are no pending
+ *  requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
+ *  bit hasn't caused the master requests to be disabled, else 0
+ *  is returned signifying master requests disabled.
+ **/
+s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
+{
+       u32 i;
+       u32 reg_val;
+       u32 number_of_queues;
+       s32 status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
+
+       /* Disable the receive unit by stopping each queue */
+       number_of_queues = hw->mac.max_rx_queues;
+       for (i = 0; i < number_of_queues; i++) {
+               reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
+               if (reg_val & IXGBE_RXDCTL_ENABLE) {
+                       reg_val &= ~IXGBE_RXDCTL_ENABLE;
+                       IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
+               }
+       }
+
+       reg_val = IXGBE_READ_REG(hw, IXGBE_CTRL);
+       reg_val |= IXGBE_CTRL_GIO_DIS;
+       IXGBE_WRITE_REG(hw, IXGBE_CTRL, reg_val);
+
+       for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
+               if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO)) {
+                       status = 0;
+                       break;
+               }
+               udelay(100);
+       }
+
+       return status;
+}
+
+
+/**
+ *  ixgbe_acquire_swfw_sync - Acquire SWFW semaphore
+ *  @hw: pointer to hardware structure
+ *  @mask: Mask to specify which semaphore to acquire
+ *
+ *  Acquires the SWFW semaphore thought the GSSR register for the specified
+ *  function (CSR, PHY0, PHY1, EEPROM, Flash)
+ **/
+s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask)
+{
+       u32 gssr;
+       u32 swmask = mask;
+       u32 fwmask = mask << 5;
+       s32 timeout = 200;
+
+       while (timeout) {
+               if (ixgbe_get_eeprom_semaphore(hw))
+                       return -IXGBE_ERR_SWFW_SYNC;
+
+               gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
+               if (!(gssr & (fwmask | swmask)))
+                       break;
+
+               /*
+                * Firmware currently using resource (fwmask) or other software
+                * thread currently using resource (swmask)
+                */
+               ixgbe_release_eeprom_semaphore(hw);
+               msleep(5);
+               timeout--;
+       }
+
+       if (!timeout) {
+               hw_dbg(hw, "Driver can't access resource, GSSR timeout.\n");
+               return -IXGBE_ERR_SWFW_SYNC;
+       }
+
+       gssr |= swmask;
+       IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
+
+       ixgbe_release_eeprom_semaphore(hw);
+       return 0;
+}
+
+/**
+ *  ixgbe_release_swfw_sync - Release SWFW semaphore
+ *  @hw: pointer to hardware structure
+ *  @mask: Mask to specify which semaphore to release
+ *
+ *  Releases the SWFW semaphore thought the GSSR register for the specified
+ *  function (CSR, PHY0, PHY1, EEPROM, Flash)
+ **/
+void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask)
+{
+       u32 gssr;
+       u32 swmask = mask;
+
+       ixgbe_get_eeprom_semaphore(hw);
+
+       gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
+       gssr &= ~swmask;
+       IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
+
+       ixgbe_release_eeprom_semaphore(hw);
+}
+
diff -urpN -X dontdiff a/drivers/net/ixgbe/ixgbe_common.h
b/drivers/net/ixgbe/ixgbe_common.h
--- a/drivers/net/ixgbe/ixgbe_common.h  1969-12-31 16:00:00.000000000 -0800
+++ b/drivers/net/ixgbe/ixgbe_common.h  2009-01-22 11:33:59.000000000 -0800
@@ -0,0 +1,77 @@
+/*******************************************************************************
+
+  Intel 10 Gigabit PCI Express Linux driver
+  Copyright(c) 1999 - 2008 Intel Corporation.
+
+  This program is free software; you can redistribute it and/or modify it
+  under the terms and conditions of the GNU General Public License,
+  version 2, as published by the Free Software Foundation.
+
+  This program is distributed in the hope it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+  more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc.,
+  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+  The full GNU General Public License is included in this distribution in
+  the file called "COPYING".
+
+  Contact Information:
+  e1000-devel Mailing List <e1000-devel@xxxxxxxxxxxxxxxxxxxxx>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#ifndef _IXGBE_COMMON_H_
+#define _IXGBE_COMMON_H_
+
+#include "ixgbe_type.h"
+
+s32 ixgbe_init_ops_generic(struct ixgbe_hw *hw);
+s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw);
+s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw);
+s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw);
+s32 ixgbe_read_pba_num_generic(struct ixgbe_hw *hw, u32 *pba_num);
+s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr);
+s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw);
+void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw);
+s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw);
+
+s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index);
+s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index);
+
+s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw);
+s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data);
+s32 ixgbe_read_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 *data);
+s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
+                                       u16 *data);
+s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
+                                           u16 *checksum_val);
+s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw);
+
+s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
+                          u32 enable_addr);
+s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index);
+s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw);
+s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw, u8 *mc_addr_list,
+                                      u32 mc_addr_count,
+                                      ixgbe_mc_addr_itr func);
+s32 ixgbe_update_uc_addr_list_generic(struct ixgbe_hw *hw, u8 *addr_list,
+                                      u32 addr_count, ixgbe_mc_addr_itr func);
+s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw);
+s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw);
+
+s32 ixgbe_setup_fc_generic(struct ixgbe_hw *hw, s32 packetbuf_num);
+s32 ixgbe_fc_enable(struct ixgbe_hw *hw, s32 packtetbuf_num);
+
+s32 ixgbe_validate_mac_addr(u8 *mac_addr);
+s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask);
+void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask);
+s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw);
+
+s32 ixgbe_read_analog_reg8_generic(struct ixgbe_hw *hw, u32 reg, u8 *val);
+s32 ixgbe_write_analog_reg8_generic(struct ixgbe_hw *hw, u32 reg, u8 val);
+#endif /* IXGBE_COMMON */

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