igb: PCI-Express 82575 Gigabit Ethernet driver

We are pleased to announce a new Gigabit Ethernet product and its
driver to the linux community. This product is the Intel(R) 82575
Gigabit Ethernet adapter family. Physical adapters will be available
to the public soon. These adapters come in 2- and 4-port versions
(copper PHY) currently. Other variants will be available later.

The 82575 chipset supports significantly different features that
warrant a new driver. The descriptor format is (just like the
ixgbe driver) different. The device can use multiple MSI-X vectors
and multiple queues for both send and receive. This allows us to
optimize some of the driver code specifically as well compared to
the e1000-supported devices.

This version of the igb driver no lnger uses fake netdevices and
incorporates napi_struct members for each ring to do the multi-
queue polling. multi-queue is enabled by default and the driver
supports NAPI mode only.

All the namespace collisions should be gone in this version too. The
register macro's have been condensed to improve readability.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

17 files changed, 13638 insertions, 0 deletions

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index f87d9ff3311..af40ff434de 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2019,6 +2019,28 @@ config IP1000
 	  To compile this driver as a module, choose M here: the module
 	  will be called ipg.  This is recommended.
 
+config IGB
+       tristate "Intel(R) 82575 PCI-Express Gigabit Ethernet support"
+       depends on PCI
+       ---help---
+         This driver supports Intel(R) 82575 gigabit ethernet family of
+         adapters.  For more information on how to identify your adapter, go
+         to the Adapter & Driver ID Guide at:
+
+         <http://support.intel.com/support/network/adapter/pro100/21397.htm>
+
+         For general information and support, go to the Intel support
+         website at:
+
+         <http://support.intel.com>
+
+         More specific information on configuring the driver is in
+         <file:Documentation/networking/e1000.txt>.
+
+         To compile this driver as a module, choose M here and read
+         <file:Documentation/networking/net-modules.txt>.  The module
+         will be called igb.
+
 source "drivers/net/ixp2000/Kconfig"
 
 config MYRI_SBUS
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 79fe3f158af..9fc7794e88e 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_E1000) += e1000/
 obj-$(CONFIG_E1000E) += e1000e/
 obj-$(CONFIG_IBM_EMAC) += ibm_emac/
 obj-$(CONFIG_IBM_NEW_EMAC) += ibm_newemac/
+obj-$(CONFIG_IGB) += igb/
 obj-$(CONFIG_IXGBE) += ixgbe/
 obj-$(CONFIG_IXGB) += ixgb/
 obj-$(CONFIG_IP1000) += ipg.o
diff --git a/drivers/net/igb/Makefile b/drivers/net/igb/Makefile
new file mode 100644
index 00000000000..1927b3fd6f0
--- /dev/null
+++ b/drivers/net/igb/Makefile
@@ -0,0 +1,37 @@
+################################################################################
+#
+# Intel 82575 PCI-Express Ethernet Linux driver
+# Copyright(c) 1999 - 2007 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:
+# Linux NICS <linux.nics@intel.com>
+# e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+# Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+#
+################################################################################
+
+#
+# Makefile for the Intel(R) 82575 PCI-Express ethernet driver
+#
+
+obj-$(CONFIG_IGB) += igb.o
+
+igb-objs := igb_main.o igb_ethtool.o e1000_82575.o \
+	    e1000_mac.o e1000_nvm.o e1000_phy.o
+
diff --git a/drivers/net/igb/e1000_82575.c b/drivers/net/igb/e1000_82575.c
new file mode 100644
index 00000000000..cda3ec87909
--- /dev/null
+++ b/drivers/net/igb/e1000_82575.c
@@ -0,0 +1,1269 @@
+/*******************************************************************************
+
+  Intel(R) Gigabit Ethernet Linux driver
+  Copyright(c) 2007 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@lists.sourceforge.net>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+/* e1000_82575
+ * e1000_82576
+ */
+
+#include <linux/types.h>
+#include <linux/slab.h>
+
+#include "e1000_mac.h"
+#include "e1000_82575.h"
+
+static s32  igb_get_invariants_82575(struct e1000_hw *);
+static s32  igb_acquire_phy_82575(struct e1000_hw *);
+static void igb_release_phy_82575(struct e1000_hw *);
+static s32  igb_acquire_nvm_82575(struct e1000_hw *);
+static void igb_release_nvm_82575(struct e1000_hw *);
+static s32  igb_check_for_link_82575(struct e1000_hw *);
+static s32  igb_get_cfg_done_82575(struct e1000_hw *);
+static s32  igb_init_hw_82575(struct e1000_hw *);
+static s32  igb_phy_hw_reset_sgmii_82575(struct e1000_hw *);
+static s32  igb_read_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16 *);
+static void igb_rar_set_82575(struct e1000_hw *, u8 *, u32);
+static s32  igb_reset_hw_82575(struct e1000_hw *);
+static s32  igb_set_d0_lplu_state_82575(struct e1000_hw *, bool);
+static s32  igb_setup_copper_link_82575(struct e1000_hw *);
+static s32  igb_setup_fiber_serdes_link_82575(struct e1000_hw *);
+static s32  igb_write_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16);
+static void igb_clear_hw_cntrs_82575(struct e1000_hw *);
+static s32  igb_acquire_swfw_sync_82575(struct e1000_hw *, u16);
+static s32  igb_configure_pcs_link_82575(struct e1000_hw *);
+static s32  igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *, u16 *,
+						 u16 *);
+static s32  igb_get_phy_id_82575(struct e1000_hw *);
+static void igb_release_swfw_sync_82575(struct e1000_hw *, u16);
+static bool igb_sgmii_active_82575(struct e1000_hw *);
+static s32  igb_reset_init_script_82575(struct e1000_hw *);
+static s32  igb_read_mac_addr_82575(struct e1000_hw *);
+
+
+struct e1000_dev_spec_82575 {
+	bool sgmii_active;
+};
+
+static s32 igb_get_invariants_82575(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	struct e1000_nvm_info *nvm = &hw->nvm;
+	struct e1000_mac_info *mac = &hw->mac;
+	struct e1000_dev_spec_82575 *dev_spec;
+	u32 eecd;
+	s32 ret_val;
+	u16 size;
+	u32 ctrl_ext = 0;
+
+	switch (hw->device_id) {
+	case E1000_DEV_ID_82575EB_COPPER:
+	case E1000_DEV_ID_82575EB_FIBER_SERDES:
+	case E1000_DEV_ID_82575GB_QUAD_COPPER:
+		mac->type = e1000_82575;
+		break;
+	default:
+		return -E1000_ERR_MAC_INIT;
+		break;
+	}
+
+	/* MAC initialization */
+	hw->dev_spec_size = sizeof(struct e1000_dev_spec_82575);
+
+	/* Device-specific structure allocation */
+	hw->dev_spec = kzalloc(hw->dev_spec_size, GFP_KERNEL);
+
+	if (!hw->dev_spec)
+		return -ENOMEM;
+
+	dev_spec = (struct e1000_dev_spec_82575 *)hw->dev_spec;
+
+	/* Set media type */
+	/*
+	 * The 82575 uses bits 22:23 for link mode. The mode can be changed
+	 * based on the EEPROM. We cannot rely upon device ID. There
+	 * is no distinguishable difference between fiber and internal
+	 * SerDes mode on the 82575. There can be an external PHY attached
+	 * on the SGMII interface. For this, we'll set sgmii_active to true.
+	 */
+	phy->media_type = e1000_media_type_copper;
+	dev_spec->sgmii_active = false;
+
+	ctrl_ext = rd32(E1000_CTRL_EXT);
+	if ((ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) ==
+	    E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES) {
+		hw->phy.media_type = e1000_media_type_internal_serdes;
+		ctrl_ext |= E1000_CTRL_I2C_ENA;
+	} else if (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_SGMII) {
+		dev_spec->sgmii_active = true;
+		ctrl_ext |= E1000_CTRL_I2C_ENA;
+	} else {
+		ctrl_ext &= ~E1000_CTRL_I2C_ENA;
+	}
+	wr32(E1000_CTRL_EXT, ctrl_ext);
+
+	/* Set mta register count */
+	mac->mta_reg_count = 128;
+	/* Set rar entry count */
+	mac->rar_entry_count = E1000_RAR_ENTRIES_82575;
+	/* Set if part includes ASF firmware */
+	mac->asf_firmware_present = true;
+	/* Set if manageability features are enabled. */
+	mac->arc_subsystem_valid =
+		(rd32(E1000_FWSM) & E1000_FWSM_MODE_MASK)
+			? true : false;
+
+	/* physical interface link setup */
+	mac->ops.setup_physical_interface =
+		(hw->phy.media_type == e1000_media_type_copper)
+			? igb_setup_copper_link_82575
+			: igb_setup_fiber_serdes_link_82575;
+
+	/* NVM initialization */
+	eecd = rd32(E1000_EECD);
+
+	nvm->opcode_bits        = 8;
+	nvm->delay_usec         = 1;
+	switch (nvm->override) {
+	case e1000_nvm_override_spi_large:
+		nvm->page_size    = 32;
+		nvm->address_bits = 16;
+		break;
+	case e1000_nvm_override_spi_small:
+		nvm->page_size    = 8;
+		nvm->address_bits = 8;
+		break;
+	default:
+		nvm->page_size    = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
+		nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 16 : 8;
+		break;
+	}
+
+	nvm->type = e1000_nvm_eeprom_spi;
+
+	size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
+		     E1000_EECD_SIZE_EX_SHIFT);
+
+	/*
+	 * Added to a constant, "size" becomes the left-shift value
+	 * for setting word_size.
+	 */
+	size += NVM_WORD_SIZE_BASE_SHIFT;
+	nvm->word_size = 1 << size;
+
+	/* setup PHY parameters */
+	if (phy->media_type != e1000_media_type_copper) {
+		phy->type = e1000_phy_none;
+		return 0;
+	}
+
+	phy->autoneg_mask        = AUTONEG_ADVERTISE_SPEED_DEFAULT;
+	phy->reset_delay_us      = 100;
+
+	/* PHY function pointers */
+	if (igb_sgmii_active_82575(hw)) {
+		phy->ops.reset_phy          = igb_phy_hw_reset_sgmii_82575;
+		phy->ops.read_phy_reg       = igb_read_phy_reg_sgmii_82575;
+		phy->ops.write_phy_reg      = igb_write_phy_reg_sgmii_82575;
+	} else {
+		phy->ops.reset_phy          = igb_phy_hw_reset;
+		phy->ops.read_phy_reg       = igb_read_phy_reg_igp;
+		phy->ops.write_phy_reg      = igb_write_phy_reg_igp;
+	}
+
+	/* Set phy->phy_addr and phy->id. */
+	ret_val = igb_get_phy_id_82575(hw);
+	if (ret_val)
+		return ret_val;
+
+	/* Verify phy id and set remaining function pointers */
+	switch (phy->id) {
+	case M88E1111_I_PHY_ID:
+		phy->type                   = e1000_phy_m88;
+		phy->ops.get_phy_info       = igb_get_phy_info_m88;
+		phy->ops.get_cable_length   = igb_get_cable_length_m88;
+		phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88;
+		break;
+	case IGP03E1000_E_PHY_ID:
+		phy->type                   = e1000_phy_igp_3;
+		phy->ops.get_phy_info       = igb_get_phy_info_igp;
+		phy->ops.get_cable_length   = igb_get_cable_length_igp_2;
+		phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_igp;
+		phy->ops.set_d0_lplu_state  = igb_set_d0_lplu_state_82575;
+		phy->ops.set_d3_lplu_state  = igb_set_d3_lplu_state;
+		break;
+	default:
+		return -E1000_ERR_PHY;
+	}
+
+	return 0;
+}
+
+/**
+ *  e1000_acquire_phy_82575 - Acquire rights to access PHY
+ *  @hw: pointer to the HW structure
+ *
+ *  Acquire access rights to the correct PHY.  This is a
+ *  function pointer entry point called by the api module.
+ **/
+static s32 igb_acquire_phy_82575(struct e1000_hw *hw)
+{
+	u16 mask;
+
+	mask = hw->bus.func ? E1000_SWFW_PHY1_SM : E1000_SWFW_PHY0_SM;
+
+	return igb_acquire_swfw_sync_82575(hw, mask);
+}
+
+/**
+ *  e1000_release_phy_82575 - Release rights to access PHY
+ *  @hw: pointer to the HW structure
+ *
+ *  A wrapper to release access rights to the correct PHY.  This is a
+ *  function pointer entry point called by the api module.
+ **/
+static void igb_release_phy_82575(struct e1000_hw *hw)
+{
+	u16 mask;
+
+	mask = hw->bus.func ? E1000_SWFW_PHY1_SM : E1000_SWFW_PHY0_SM;
+	igb_release_swfw_sync_82575(hw, mask);
+}
+
+/**
+ *  e1000_read_phy_reg_sgmii_82575 - Read PHY register using sgmii
+ *  @hw: pointer to the HW structure
+ *  @offset: register offset to be read
+ *  @data: pointer to the read data
+ *
+ *  Reads the PHY register at offset using the serial gigabit media independent
+ *  interface and stores the retrieved information in data.
+ **/
+static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
+					  u16 *data)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	u32 i, i2ccmd = 0;
+
+	if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
+		hw_dbg(hw, "PHY Address %u is out of range\n", offset);
+		return -E1000_ERR_PARAM;
+	}
+
+	/*
+	 * Set up Op-code, Phy Address, and register address in the I2CCMD
+	 * register.  The MAC will take care of interfacing with the
+	 * PHY to retrieve the desired data.
+	 */
+	i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) |
+		  (phy->addr << E1000_I2CCMD_PHY_ADDR_SHIFT) |
+		  (E1000_I2CCMD_OPCODE_READ));
+
+	wr32(E1000_I2CCMD, i2ccmd);
+
+	/* Poll the ready bit to see if the I2C read completed */
+	for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) {
+		udelay(50);
+		i2ccmd = rd32(E1000_I2CCMD);
+		if (i2ccmd & E1000_I2CCMD_READY)
+			break;
+	}
+	if (!(i2ccmd & E1000_I2CCMD_READY)) {
+		hw_dbg(hw, "I2CCMD Read did not complete\n");
+		return -E1000_ERR_PHY;
+	}
+	if (i2ccmd & E1000_I2CCMD_ERROR) {
+		hw_dbg(hw, "I2CCMD Error bit set\n");
+		return -E1000_ERR_PHY;
+	}
+
+	/* Need to byte-swap the 16-bit value. */
+	*data = ((i2ccmd >> 8) & 0x00FF) | ((i2ccmd << 8) & 0xFF00);
+
+	return 0;
+}
+
+/**
+ *  e1000_write_phy_reg_sgmii_82575 - Write PHY register using sgmii
+ *  @hw: pointer to the HW structure
+ *  @offset: register offset to write to
+ *  @data: data to write at register offset
+ *
+ *  Writes the data to PHY register at the offset using the serial gigabit
+ *  media independent interface.
+ **/
+static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
+					   u16 data)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	u32 i, i2ccmd = 0;
+	u16 phy_data_swapped;
+
+	if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
+		hw_dbg(hw, "PHY Address %d is out of range\n", offset);
+		return -E1000_ERR_PARAM;
+	}
+
+	/* Swap the data bytes for the I2C interface */
+	phy_data_swapped = ((data >> 8) & 0x00FF) | ((data << 8) & 0xFF00);
+
+	/*
+	 * Set up Op-code, Phy Address, and register address in the I2CCMD
+	 * register.  The MAC will take care of interfacing with the
+	 * PHY to retrieve the desired data.
+	 */
+	i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) |
+		  (phy->addr << E1000_I2CCMD_PHY_ADDR_SHIFT) |
+		  E1000_I2CCMD_OPCODE_WRITE |
+		  phy_data_swapped);
+
+	wr32(E1000_I2CCMD, i2ccmd);
+
+	/* Poll the ready bit to see if the I2C read completed */
+	for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) {
+		udelay(50);
+		i2ccmd = rd32(E1000_I2CCMD);
+		if (i2ccmd & E1000_I2CCMD_READY)
+			break;
+	}
+	if (!(i2ccmd & E1000_I2CCMD_READY)) {
+		hw_dbg(hw, "I2CCMD Write did not complete\n");
+		return -E1000_ERR_PHY;
+	}
+	if (i2ccmd & E1000_I2CCMD_ERROR) {
+		hw_dbg(hw, "I2CCMD Error bit set\n");
+		return -E1000_ERR_PHY;
+	}
+
+	return 0;
+}
+
+/**
+ *  e1000_get_phy_id_82575 - Retreive PHY addr and id
+ *  @hw: pointer to the HW structure
+ *
+ *  Retreives the PHY address and ID for both PHY's which do and do not use
+ *  sgmi interface.
+ **/
+static s32 igb_get_phy_id_82575(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32  ret_val = 0;
+	u16 phy_id;
+
+	/*
+	 * For SGMII PHYs, we try the list of possible addresses until
+	 * we find one that works.  For non-SGMII PHYs
+	 * (e.g. integrated copper PHYs), an address of 1 should
+	 * work.  The result of this function should mean phy->phy_addr
+	 * and phy->id are set correctly.
+	 */
+	if (!(igb_sgmii_active_82575(hw))) {
+		phy->addr = 1;
+		ret_val = igb_get_phy_id(hw);
+		goto out;
+	}
+
+	/*
+	 * The address field in the I2CCMD register is 3 bits and 0 is invalid.
+	 * Therefore, we need to test 1-7
+	 */
+	for (phy->addr = 1; phy->addr < 8; phy->addr++) {
+		ret_val = igb_read_phy_reg_sgmii_82575(hw, PHY_ID1, &phy_id);
+		if (ret_val == 0) {
+			hw_dbg(hw, "Vendor ID 0x%08X read at address %u\n",
+				  phy_id,
+				  phy->addr);
+			/*
+			 * At the time of this writing, The M88 part is
+			 * the only supported SGMII PHY product.
+			 */
+			if (phy_id == M88_VENDOR)
+				break;
+		} else {
+			hw_dbg(hw, "PHY address %u was unreadable\n",
+				  phy->addr);
+		}
+	}
+
+	/* A valid PHY type couldn't be found. */
+	if (phy->addr == 8) {
+		phy->addr = 0;
+		ret_val = -E1000_ERR_PHY;
+		goto out;
+	}
+
+	ret_val = igb_get_phy_id(hw);
+
+out:
+	return ret_val;
+}
+
+/**
+ *  e1000_phy_hw_reset_sgmii_82575 - Performs a PHY reset
+ *  @hw: pointer to the HW structure
+ *
+ *  Resets the PHY using the serial gigabit media independent interface.
+ **/
+static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *hw)
+{
+	s32 ret_val;
+
+	/*
+	 * This isn't a true "hard" reset, but is the only reset
+	 * available to us at this time.
+	 */
+
+	hw_dbg(hw, "Soft resetting SGMII attached PHY...\n");
+
+	/*
+	 * SFP documentation requires the following to configure the SPF module
+	 * to work on SGMII.  No further documentation is given.
+	 */
+	ret_val = hw->phy.ops.write_phy_reg(hw, 0x1B, 0x8084);
+	if (ret_val)
+		goto out;
+
+	ret_val = igb_phy_sw_reset(hw);
+
+out:
+	return ret_val;
+}
+
+/**
+ *  e1000_set_d0_lplu_state_82575 - Set Low Power Linkup D0 state
+ *  @hw: pointer to the HW structure
+ *  @active: true to enable LPLU, false to disable
+ *
+ *  Sets the LPLU D0 state according to the active flag.  When
+ *  activating LPLU this function also disables smart speed
+ *  and vice versa.  LPLU will not be activated unless the
+ *  device autonegotiation advertisement meets standards of
+ *  either 10 or 10/100 or 10/100/1000 at all duplexes.
+ *  This is a function pointer entry point only called by
+ *  PHY setup routines.
+ **/
+static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *hw, bool active)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 data;
+
+	ret_val = hw->phy.ops.read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
+					   &data);
+	if (ret_val)
+		goto out;
+
+	if (active) {
+		data |= IGP02E1000_PM_D0_LPLU;
+		ret_val = hw->phy.ops.write_phy_reg(hw,
+					      IGP02E1000_PHY_POWER_MGMT,
+					      data);
+		if (ret_val)
+			goto out;
+
+		/* When LPLU is enabled, we should disable SmartSpeed */
+		ret_val = hw->phy.ops.read_phy_reg(hw,
+					     IGP01E1000_PHY_PORT_CONFIG,
+					     &data);
+		data &= ~IGP01E1000_PSCFR_SMART_SPEED;
+		ret_val = hw->phy.ops.write_phy_reg(hw,
+					      IGP01E1000_PHY_PORT_CONFIG,
+					      data);
+		if (ret_val)
+			goto out;
+	} else {
+		data &= ~IGP02E1000_PM_D0_LPLU;
+		ret_val = hw->phy.ops.write_phy_reg(hw,
+					      IGP02E1000_PHY_POWER_MGMT,
+					      data);
+		/*
+		 * LPLU and SmartSpeed are mutually exclusive.  LPLU is used
+		 * during Dx states where the power conservation is most
+		 * important.  During driver activity we should enable
+		 * SmartSpeed, so performance is maintained.
+		 */
+		if (phy->smart_speed == e1000_smart_speed_on) {
+			ret_val = hw->phy.ops.read_phy_reg(hw,
+						     IGP01E1000_PHY_PORT_CONFIG,
+						     &data);
+			if (ret_val)
+				goto out;
+
+			data |= IGP01E1000_PSCFR_SMART_SPEED;
+			ret_val = hw->phy.ops.write_phy_reg(hw,
+						     IGP01E1000_PHY_PORT_CONFIG,
+						     data);
+			if (ret_val)
+				goto out;
+		} else if (phy->smart_speed == e1000_smart_speed_off) {
+			ret_val = hw->phy.ops.read_phy_reg(hw,
+						     IGP01E1000_PHY_PORT_CONFIG,
+						     &data);
+			if (ret_val)
+				goto out;
+
+			data &= ~IGP01E1000_PSCFR_SMART_SPEED;
+			ret_val = hw->phy.ops.write_phy_reg(hw,
+						     IGP01E1000_PHY_PORT_CONFIG,
+						     data);
+			if (ret_val)
+				goto out;
+		}
+	}
+
+out:
+	return ret_val;
+}
+
+/**
+ *  e1000_acquire_nvm_82575 - Request for access to EEPROM
+ *  @hw: pointer to the HW structure
+ *
+ *  Acquire the necessary semaphores for exclussive access to the EEPROM.
+ *  Set the EEPROM access request bit and wait for EEPROM access grant bit.
+ *  Return successful if access grant bit set, else clear the request for
+ *  EEPROM access and return -E1000_ERR_NVM (-1).
+ **/
+static s32 igb_acquire_nvm_82575(struct e1000_hw *hw)
+{
+	s32 ret_val;
+
+	ret_val = igb_acquire_swfw_sync_82575(hw, E1000_SWFW_EEP_SM);
+	if (ret_val)
+		goto out;
+
+	ret_val = igb_acquire_nvm(hw);
+
+	if (ret_val)
+		igb_release_swfw_sync_82575(hw, E1000_SWFW_EEP_SM);
+
+out:
+	return ret_val;
+}
+
+/**
+ *  e1000_release_nvm_82575 - Release exclusive access to EEPROM
+ *  @hw: pointer to the HW structure
+ *
+ *  Stop any current commands to the EEPROM and clear the EEPROM request bit,
+ *  then release the semaphores acquired.
+ **/
+static void igb_release_nvm_82575(struct e1000_hw *hw)
+{
+	igb_release_nvm(hw);
+	igb_release_swfw_sync_82575(hw, E1000_SWFW_EEP_SM);
+}
+
+/**
+ *  e1000_acquire_swfw_sync_82575 - Acquire SW/FW semaphore
+ *  @hw: pointer to the HW structure
+ *  @mask: specifies which semaphore to acquire
+ *
+ *  Acquire the SW/FW semaphore to access the PHY or NVM.  The mask
+ *  will also specify which port we're acquiring the lock for.
+ **/
+static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
+{
+	u32 swfw_sync;
+	u32 swmask = mask;
+	u32 fwmask = mask << 16;
+	s32 ret_val = 0;
+	s32 i = 0, timeout = 200; /* FIXME: find real value to use here */
+
+	while (i < timeout) {
+		if (igb_get_hw_semaphore(hw)) {
+			ret_val = -E1000_ERR_SWFW_SYNC;
+			goto out;
+		}
+
+		swfw_sync = rd32(E1000_SW_FW_SYNC);
+		if (!(swfw_sync & (fwmask | swmask)))
+			break;
+
+		/*
+		 * Firmware currently using resource (fwmask)
+		 * or other software thread using resource (swmask)
+		 */
+		igb_put_hw_semaphore(hw);
+		mdelay(5);
+		i++;
+	}
+
+	if (i == timeout) {
+		hw_dbg(hw, "Can't access resource, SW_FW_SYNC timeout.\n");
+		ret_val = -E1000_ERR_SWFW_SYNC;
+		goto out;
+	}
+
+	swfw_sync |= swmask;
+	wr32(E1000_SW_FW_SYNC, swfw_sync);
+
+	igb_put_hw_semaphore(hw);
+
+out:
+	return ret_val;
+}
+
+/**
+ *  e1000_release_swfw_sync_82575 - Release SW/FW semaphore
+ *  @hw: pointer to the HW structure
+ *  @mask: specifies which semaphore to acquire
+ *
+ *  Release the SW/FW semaphore used to access the PHY or NVM.  The mask
+ *  will also specify which port we're releasing the lock for.
+ **/
+static void igb_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
+{
+	u32 swfw_sync;
+
+	while (igb_get_hw_semaphore(hw) != 0);
+	/* Empty */
+
+	swfw_sync = rd32(E1000_SW_FW_SYNC);
+	swfw_sync &= ~mask;
+	wr32(E1000_SW_FW_SYNC, swfw_sync);
+
+	igb_put_hw_semaphore(hw);
+}
+
+/**
+ *  e1000_get_cfg_done_82575 - Read config done bit
+ *  @hw: pointer to the HW structure
+ *
+ *  Read the management control register for the config done bit for
+ *  completion status.  NOTE: silicon which is EEPROM-less will fail trying
+ *  to read the config done bit, so an error is *ONLY* logged and returns
+ *  0.  If we were to return with error, EEPROM-less silicon
+ *  would not be able to be reset or change link.
+ **/
+static s32 igb_get_cfg_done_82575(struct e1000_hw *hw)
+{
+	s32 timeout = PHY_CFG_TIMEOUT;
+	s32 ret_val = 0;
+	u32 mask = E1000_NVM_CFG_DONE_PORT_0;
+
+	if (hw->bus.func == 1)
+		mask = E1000_NVM_CFG_DONE_PORT_1;
+
+	while (timeout) {
+		if (rd32(E1000_EEMNGCTL) & mask)
+			break;
+		msleep(1);
+		timeout--;
+	}
+	if (!timeout)
+		hw_dbg(hw, "MNG configuration cycle has not completed.\n");
+
+	/* If EEPROM is not marked present, init the PHY manually */
+	if (((rd32(E1000_EECD) & E1000_EECD_PRES) == 0) &&
+	    (hw->phy.type == e1000_phy_igp_3))
+		igb_phy_init_script_igp3(hw);
+
+	return ret_val;
+}
+
+/**
+ *  e1000_check_for_link_82575 - Check for link
+ *  @hw: pointer to the HW structure
+ *
+ *  If sgmii is enabled, then use the pcs register to determine link, otherwise
+ *  use the generic interface for determining link.
+ **/
+static s32 igb_check_for_link_82575(struct e1000_hw *hw)
+{
+	s32 ret_val;
+	u16 speed, duplex;
+
+	/* SGMII link check is done through the PCS register. */
+	if ((hw->phy.media_type != e1000_media_type_copper) ||
+	    (igb_sgmii_active_82575(hw)))
+		ret_val = igb_get_pcs_speed_and_duplex_82575(hw, &speed,
+							       &duplex);
+	else
+		ret_val = igb_check_for_copper_link(hw);
+
+	return ret_val;
+}
+
+/**
+ *  e1000_get_pcs_speed_and_duplex_82575 - Retrieve current speed/duplex
+ *  @hw: pointer to the HW structure
+ *  @speed: stores the current speed
+ *  @duplex: stores the current duplex
+ *
+ *  Using the physical coding sub-layer (PCS), retreive the current speed and
+ *  duplex, then store the values in the pointers provided.
+ **/
+static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, u16 *speed,
+						u16 *duplex)
+{
+	struct e1000_mac_info *mac = &hw->mac;
+	u32 pcs;
+
+	/* Set up defaults for the return values of this function */
+	mac->serdes_has_link = false;
+	*speed = 0;
+	*duplex = 0;
+
+	/*
+	 * Read the PCS Status register for link state. For non-copper mode,
+	 * the status register is not accurate. The PCS status register is
+	 * used instead.
+	 */
+	pcs = rd32(E1000_PCS_LSTAT);
+
+	/*
+	 * The link up bit determines when link is up on autoneg. The sync ok
+	 * gets set once both sides sync up and agree upon link. Stable link
+	 * can be determined by checking for both link up and link sync ok
+	 */
+	if ((pcs & E1000_PCS_LSTS_LINK_OK) && (pcs & E1000_PCS_LSTS_SYNK_OK)) {
+		mac->serdes_has_link = true;
+
+		/* Detect and store PCS speed */
+		if (pcs & E1000_PCS_LSTS_SPEED_1000) {
+			*speed = SPEED_1000;
+		} else if (pcs & E1000_PCS_LSTS_SPEED_100) {
+			*speed = SPEED_100;
+		} else {
+			*speed = SPEED_10;
+		}
+
+		/* Detect and store PCS duplex */
+		if (pcs & E1000_PCS_LSTS_DUPLEX_FULL) {
+			*duplex = FULL_DUPLEX;
+		} else {
+			*duplex = HALF_DUPLEX;
+		}
+	}
+
+	return 0;
+}
+
+/**
+ *  e1000_rar_set_82575 - Set receive address register
+ *  @hw: pointer to the HW structure
+ *  @addr: pointer to the receive address
+ *  @index: receive address array register
+ *
+ *  Sets the receive address array register at index to the address passed
+ *  in by addr.
+ **/
+static void igb_rar_set_82575(struct e1000_hw *hw, u8 *addr, u32 index)
+{
+	if (index < E1000_RAR_ENTRIES_82575)
+		igb_rar_set(hw, addr, index);
+
+	return;
+}
+
+/**
+ *  e1000_reset_hw_82575 - Reset hardware
+ *  @hw: pointer to the HW structure
+ *
+ *  This resets the hardware into a known state.  This is a
+ *  function pointer entry point called by the api module.
+ **/
+static s32 igb_reset_hw_82575(struct e1000_hw *hw)
+{
+	u32 ctrl, icr;
+	s32 ret_val;
+
+	/*
+	 * Prevent the PCI-E bus from sticking if there is no TLP connection
+	 * on the last TLP read/write transaction when MAC is reset.
+	 */
+	ret_val = igb_disable_pcie_master(hw);
+	if (ret_val)
+		hw_dbg(hw, "PCI-E Master disable polling has failed.\n");
+
+	hw_dbg(hw, "Masking off all interrupts\n");
+	wr32(E1000_IMC, 0xffffffff);
+
+	wr32(E1000_RCTL, 0);
+	wr32(E1000_TCTL, E1000_TCTL_PSP);
+	wrfl();
+
+	msleep(10);
+
+	ctrl = rd32(E1000_CTRL);
+
+	hw_dbg(hw, "Issuing a global reset to MAC\n");
+	wr32(E1000_CTRL, ctrl | E1000_CTRL_RST);
+
+	ret_val = igb_get_auto_rd_done(hw);
+	if (ret_val) {
+		/*
+		 * When auto config read does not complete, do not
+		 * return with an error. This can happen in situations
+		 * where there is no eeprom and prevents getting link.
+		 */
+		hw_dbg(hw, "Auto Read Done did not complete\n");
+	}
+
+	/* If EEPROM is not present, run manual init scripts */
+	if ((rd32(E1000_EECD) & E1000_EECD_PRES) == 0)
+		igb_reset_init_script_82575(hw);
+
+	/* Clear any pending interrupt events. */
+	wr32(E1000_IMC, 0xffffffff);
+	icr = rd32(E1000_ICR);
+
+	igb_check_alt_mac_addr(hw);
+
+	return ret_val;
+}
+
+/**
+ *  e1000_init_hw_82575 - Initialize hardware
+ *  @hw: pointer to the HW structure
+ *
+ *  This inits the hardware readying it for operation.
+ **/
+static s32 igb_init_hw_82575(struct e1000_hw *hw)
+{
+	struct e1000_mac_info *mac = &hw->mac;
+	s32 ret_val;
+	u16 i, rar_count = mac->rar_entry_count;
+
+	/* Initialize identification LED */
+	ret_val = igb_id_led_init(hw);
+	if (ret_val) {
+		hw_dbg(hw, "Error initializing identification LED\n");
+		/* This is not fatal and we should not stop init due to this */
+	}
+
+	/* Disabling VLAN filtering */
+	hw_dbg(hw, "Initializing the IEEE VLAN\n");
+	igb_clear_vfta(hw);
+
+	/* Setup the receive address */
+	igb_init_rx_addrs(hw, rar_count);
+	/* Zero out the Multicast HASH table */
+	hw_dbg(hw, "Zeroing the MTA\n");
+	for (i = 0; i < mac->mta_reg_count; i++)
+		array_wr32(E1000_MTA, i, 0);
+
+	/* Setup link and flow control */
+	ret_val = igb_setup_link(hw);
+
+	/*
+	 * Clear all of the statistics registers (clear on read).  It is
+	 * important that we do this after we have tried to establish link
+	 * because the symbol error count will increment wildly if there
+	 * is no link.
+	 */
+	igb_clear_hw_cntrs_82575(hw);
+