etherlabmaster: comparison devices/e1000e/phy-3.2-orig.c

equal deleted inserted replaced

-:214be3e0640e
+:35223d2e6e72
+/*******************************************************************************
+Intel PRO/1000 Linux driver
+Copyright(c) 1999 - 2011 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
+*******************************************************************************/
+#include <linux/delay.h>
+#include "e1000.h"
+static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw);
+static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw);
+static s32 e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active);
+static s32 e1000_wait_autoneg(struct e1000_hw *hw);
+static u32 e1000_get_phy_addr_for_bm_page(u32 page, u32 reg);
+static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset,
+					  u16 *data, bool read, bool page_set);
+static u32 e1000_get_phy_addr_for_hv_page(u32 page);
+static s32 e1000_access_phy_debug_regs_hv(struct e1000_hw *hw, u32 offset,
+u16 *data, bool read);
+/* Cable length tables */
+static const u16 e1000_m88_cable_length_table[] = {
+	0, 50, 80, 110, 140, 140, E1000_CABLE_LENGTH_UNDEFINED };
+#define M88E1000_CABLE_LENGTH_TABLE_SIZE \
+		ARRAY_SIZE(e1000_m88_cable_length_table)
+static const u16 e1000_igp_2_cable_length_table[] = {
+	0, 0, 0, 0, 0, 0, 0, 0, 3, 5, 8, 11, 13, 16, 18, 21, 0, 0, 0, 3,
+	6, 10, 13, 16, 19, 23, 26, 29, 32, 35, 38, 41, 6, 10, 14, 18, 22,
+	26, 30, 33, 37, 41, 44, 48, 51, 54, 58, 61, 21, 26, 31, 35, 40,
+	44, 49, 53, 57, 61, 65, 68, 72, 75, 79, 82, 40, 45, 51, 56, 61,
+	66, 70, 75, 79, 83, 87, 91, 94, 98, 101, 104, 60, 66, 72, 77, 82,
+	87, 92, 96, 100, 104, 108, 111, 114, 117, 119, 121, 83, 89, 95,
+	100, 105, 109, 113, 116, 119, 122, 124, 104, 109, 114, 118, 121,
+	124};
+#define IGP02E1000_CABLE_LENGTH_TABLE_SIZE \
+		ARRAY_SIZE(e1000_igp_2_cable_length_table)
+#define BM_PHY_REG_PAGE(offset) \
+	((u16)(((offset) >> PHY_PAGE_SHIFT) & 0xFFFF))
+#define BM_PHY_REG_NUM(offset) \
+	((u16)(((offset) & MAX_PHY_REG_ADDRESS) |\
+	 (((offset) >> (PHY_UPPER_SHIFT - PHY_PAGE_SHIFT)) &\
+		~MAX_PHY_REG_ADDRESS)))
+#define HV_INTC_FC_PAGE_START             768
+#define I82578_ADDR_REG                   29
+#define I82577_ADDR_REG                   16
+#define I82577_CFG_REG                    22
+#define I82577_CFG_ASSERT_CRS_ON_TX       (1 << 15)
+#define I82577_CFG_ENABLE_DOWNSHIFT       (3 << 10) /* auto downshift 100/10 */
+#define I82577_CTRL_REG                   23
+/* 82577 specific PHY registers */
+#define I82577_PHY_CTRL_2            18
+#define I82577_PHY_STATUS_2          26
+#define I82577_PHY_DIAG_STATUS       31
+/* I82577 PHY Status 2 */
+#define I82577_PHY_STATUS2_REV_POLARITY   0x0400
+#define I82577_PHY_STATUS2_MDIX           0x0800
+#define I82577_PHY_STATUS2_SPEED_MASK     0x0300
+#define I82577_PHY_STATUS2_SPEED_1000MBPS 0x0200
+/* I82577 PHY Control 2 */
+#define I82577_PHY_CTRL2_AUTO_MDIX        0x0400
+#define I82577_PHY_CTRL2_FORCE_MDI_MDIX   0x0200
+/* I82577 PHY Diagnostics Status */
+#define I82577_DSTATUS_CABLE_LENGTH       0x03FC
+#define I82577_DSTATUS_CABLE_LENGTH_SHIFT 2
+/* BM PHY Copper Specific Control 1 */
+#define BM_CS_CTRL1                       16
+#define HV_MUX_DATA_CTRL               PHY_REG(776, 16)
+#define HV_MUX_DATA_CTRL_GEN_TO_MAC    0x0400
+#define HV_MUX_DATA_CTRL_FORCE_SPEED   0x0004
+/**
+*  e1000e_check_reset_block_generic - Check if PHY reset is blocked
+*  @hw: pointer to the HW structure
+*
+*  Read the PHY management control register and check whether a PHY reset
+*  is blocked.  If a reset is not blocked return 0, otherwise
+*  return E1000_BLK_PHY_RESET (12).
+**/
+s32 e1000e_check_reset_block_generic(struct e1000_hw *hw)
+{
+	u32 manc;
+	manc = er32(MANC);
+	return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ?
+	       E1000_BLK_PHY_RESET : 0;
+}
+/**
+*  e1000e_get_phy_id - Retrieve the PHY ID and revision
+*  @hw: pointer to the HW structure
+*
+*  Reads the PHY registers and stores the PHY ID and possibly the PHY
+*  revision in the hardware structure.
+**/
+s32 e1000e_get_phy_id(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val = 0;
+	u16 phy_id;
+	u16 retry_count = 0;
+	if (!(phy->ops.read_reg))
+		goto out;
+	while (retry_count < 2) {
+		ret_val = e1e_rphy(hw, PHY_ID1, &phy_id);
+		if (ret_val)
+			goto out;
+		phy->id = (u32)(phy_id << 16);
+		udelay(20);
+		ret_val = e1e_rphy(hw, PHY_ID2, &phy_id);
+		if (ret_val)
+			goto out;
+		phy->id |= (u32)(phy_id & PHY_REVISION_MASK);
+		phy->revision = (u32)(phy_id & ~PHY_REVISION_MASK);
+		if (phy->id != 0 && phy->id != PHY_REVISION_MASK)
+			goto out;
+		retry_count++;
+	}
+out:
+	return ret_val;
+}
+/**
+*  e1000e_phy_reset_dsp - Reset PHY DSP
+*  @hw: pointer to the HW structure
+*
+*  Reset the digital signal processor.
+**/
+s32 e1000e_phy_reset_dsp(struct e1000_hw *hw)
+{
+	s32 ret_val;
+	ret_val = e1e_wphy(hw, M88E1000_PHY_GEN_CONTROL, 0xC1);
+	if (ret_val)
+		return ret_val;
+	return e1e_wphy(hw, M88E1000_PHY_GEN_CONTROL, 0);
+}
+/**
+*  e1000e_read_phy_reg_mdic - Read MDI control register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read
+*  @data: pointer to the read data
+*
+*  Reads the MDI control register in the PHY at offset and stores the
+*  information read to data.
+**/
+s32 e1000e_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	u32 i, mdic = 0;
+	if (offset > MAX_PHY_REG_ADDRESS) {
+		e_dbg("PHY Address %d is out of range\n", offset);
+		return -E1000_ERR_PARAM;
+	}
+	/*
+	 * Set up Op-code, Phy Address, and register offset in the MDI
+	 * Control register.  The MAC will take care of interfacing with the
+	 * PHY to retrieve the desired data.
+	 */
+	mdic = ((offset << E1000_MDIC_REG_SHIFT) |
+		(phy->addr << E1000_MDIC_PHY_SHIFT) |
+		(E1000_MDIC_OP_READ));
+	ew32(MDIC, mdic);
+	/*
+	 * Poll the ready bit to see if the MDI read completed
+	 * Increasing the time out as testing showed failures with
+	 * the lower time out
+	 */
+	for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) {
+		udelay(50);
+		mdic = er32(MDIC);
+		if (mdic & E1000_MDIC_READY)
+			break;
+	}
+	if (!(mdic & E1000_MDIC_READY)) {
+		e_dbg("MDI Read did not complete\n");
+		return -E1000_ERR_PHY;
+	}
+	if (mdic & E1000_MDIC_ERROR) {
+		e_dbg("MDI Error\n");
+		return -E1000_ERR_PHY;
+	}
+	*data = (u16) mdic;
+	/*
+	 * Allow some time after each MDIC transaction to avoid
+	 * reading duplicate data in the next MDIC transaction.
+	 */
+	if (hw->mac.type == e1000_pch2lan)
+		udelay(100);
+	return 0;
+}
+/**
+*  e1000e_write_phy_reg_mdic - Write MDI control register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to write to
+*  @data: data to write to register at offset
+*
+*  Writes data to MDI control register in the PHY at offset.
+**/
+s32 e1000e_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	u32 i, mdic = 0;
+	if (offset > MAX_PHY_REG_ADDRESS) {
+		e_dbg("PHY Address %d is out of range\n", offset);
+		return -E1000_ERR_PARAM;
+	}
+	/*
+	 * Set up Op-code, Phy Address, and register offset in the MDI
+	 * Control register.  The MAC will take care of interfacing with the
+	 * PHY to retrieve the desired data.
+	 */
+	mdic = (((u32)data) |
+		(offset << E1000_MDIC_REG_SHIFT) |
+		(phy->addr << E1000_MDIC_PHY_SHIFT) |
+		(E1000_MDIC_OP_WRITE));
+	ew32(MDIC, mdic);
+	/*
+	 * Poll the ready bit to see if the MDI read completed
+	 * Increasing the time out as testing showed failures with
+	 * the lower time out
+	 */
+	for (i = 0; i < (E1000_GEN_POLL_TIMEOUT * 3); i++) {
+		udelay(50);
+		mdic = er32(MDIC);
+		if (mdic & E1000_MDIC_READY)
+			break;
+	}
+	if (!(mdic & E1000_MDIC_READY)) {
+		e_dbg("MDI Write did not complete\n");
+		return -E1000_ERR_PHY;
+	}
+	if (mdic & E1000_MDIC_ERROR) {
+		e_dbg("MDI Error\n");
+		return -E1000_ERR_PHY;
+	}
+	/*
+	 * Allow some time after each MDIC transaction to avoid
+	 * reading duplicate data in the next MDIC transaction.
+	 */
+	if (hw->mac.type == e1000_pch2lan)
+		udelay(100);
+	return 0;
+}
+/**
+*  e1000e_read_phy_reg_m88 - Read m88 PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read
+*  @data: pointer to the read data
+*
+*  Acquires semaphore, if necessary, then reads the PHY register at offset
+*  and storing the retrieved information in data.  Release any acquired
+*  semaphores before exiting.
+**/
+s32 e1000e_read_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 *data)
+{
+	s32 ret_val;
+	ret_val = hw->phy.ops.acquire(hw);
+	if (ret_val)
+		return ret_val;
+	ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
+					   data);
+	hw->phy.ops.release(hw);
+	return ret_val;
+}
+/**
+*  e1000e_write_phy_reg_m88 - Write m88 PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to write to
+*  @data: data to write at register offset
+*
+*  Acquires semaphore, if necessary, then writes the data to PHY register
+*  at the offset.  Release any acquired semaphores before exiting.
+**/
+s32 e1000e_write_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 data)
+{
+	s32 ret_val;
+	ret_val = hw->phy.ops.acquire(hw);
+	if (ret_val)
+		return ret_val;
+	ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
+					    data);
+	hw->phy.ops.release(hw);
+	return ret_val;
+}
+/**
+*  e1000_set_page_igp - Set page as on IGP-like PHY(s)
+*  @hw: pointer to the HW structure
+*  @page: page to set (shifted left when necessary)
+*
+*  Sets PHY page required for PHY register access.  Assumes semaphore is
+*  already acquired.  Note, this function sets phy.addr to 1 so the caller
+*  must set it appropriately (if necessary) after this function returns.
+**/
+s32 e1000_set_page_igp(struct e1000_hw *hw, u16 page)
+{
+	e_dbg("Setting page 0x%x\n", page);
+	hw->phy.addr = 1;
+	return e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, page);
+}
+/**
+*  __e1000e_read_phy_reg_igp - Read igp PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read
+*  @data: pointer to the read data
+*  @locked: semaphore has already been acquired or not
+*
+*  Acquires semaphore, if necessary, then reads the PHY register at offset
+*  and stores the retrieved information in data.  Release any acquired
+*  semaphores before exiting.
+**/
+static s32 __e1000e_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data,
+bool locked)
+{
+	s32 ret_val = 0;
+	if (!locked) {
+		if (!(hw->phy.ops.acquire))
+			goto out;
+		ret_val = hw->phy.ops.acquire(hw);
+		if (ret_val)
+			goto out;
+	}
+	if (offset > MAX_PHY_MULTI_PAGE_REG) {
+		ret_val = e1000e_write_phy_reg_mdic(hw,
+						    IGP01E1000_PHY_PAGE_SELECT,
+						    (u16)offset);
+		if (ret_val)
+			goto release;
+	}
+	ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
+	                                  data);
+release:
+	if (!locked)
+		hw->phy.ops.release(hw);
+out:
+	return ret_val;
+}
+/**
+*  e1000e_read_phy_reg_igp - Read igp PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read
+*  @data: pointer to the read data
+*
+*  Acquires semaphore then reads the PHY register at offset and stores the
+*  retrieved information in data.
+*  Release the acquired semaphore before exiting.
+**/
+s32 e1000e_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data)
+{
+	return __e1000e_read_phy_reg_igp(hw, offset, data, false);
+}
+/**
+*  e1000e_read_phy_reg_igp_locked - Read igp PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read
+*  @data: pointer to the read data
+*
+*  Reads the PHY register at offset and stores the retrieved information
+*  in data.  Assumes semaphore already acquired.
+**/
+s32 e1000e_read_phy_reg_igp_locked(struct e1000_hw *hw, u32 offset, u16 *data)
+{
+	return __e1000e_read_phy_reg_igp(hw, offset, data, true);
+}
+/**
+*  e1000e_write_phy_reg_igp - Write igp PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to write to
+*  @data: data to write at register offset
+*  @locked: semaphore has already been acquired or not
+*
+*  Acquires semaphore, if necessary, then writes the data to PHY register
+*  at the offset.  Release any acquired semaphores before exiting.
+**/
+static s32 __e1000e_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data,
+bool locked)
+{
+	s32 ret_val = 0;
+	if (!locked) {
+		if (!(hw->phy.ops.acquire))
+			goto out;
+		ret_val = hw->phy.ops.acquire(hw);
+		if (ret_val)
+			goto out;
+	}
+	if (offset > MAX_PHY_MULTI_PAGE_REG) {
+		ret_val = e1000e_write_phy_reg_mdic(hw,
+						    IGP01E1000_PHY_PAGE_SELECT,
+						    (u16)offset);
+		if (ret_val)
+			goto release;
+	}
+	ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
+					    data);
+release:
+	if (!locked)
+		hw->phy.ops.release(hw);
+out:
+	return ret_val;
+}
+/**
+*  e1000e_write_phy_reg_igp - Write igp PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to write to
+*  @data: data to write at register offset
+*
+*  Acquires semaphore then writes the data to PHY register
+*  at the offset.  Release any acquired semaphores before exiting.
+**/
+s32 e1000e_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data)
+{
+	return __e1000e_write_phy_reg_igp(hw, offset, data, false);
+}
+/**
+*  e1000e_write_phy_reg_igp_locked - Write igp PHY register
+*  @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.
+*  Assumes semaphore already acquired.
+**/
+s32 e1000e_write_phy_reg_igp_locked(struct e1000_hw *hw, u32 offset, u16 data)
+{
+	return __e1000e_write_phy_reg_igp(hw, offset, data, true);
+}
+/**
+*  __e1000_read_kmrn_reg - Read kumeran register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read
+*  @data: pointer to the read data
+*  @locked: semaphore has already been acquired or not
+*
+*  Acquires semaphore, if necessary.  Then reads the PHY register at offset
+*  using the kumeran interface.  The information retrieved is stored in data.
+*  Release any acquired semaphores before exiting.
+**/
+static s32 __e1000_read_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 *data,
+bool locked)
+{
+	u32 kmrnctrlsta;
+	s32 ret_val = 0;
+	if (!locked) {
+		if (!(hw->phy.ops.acquire))
+			goto out;
+		ret_val = hw->phy.ops.acquire(hw);
+		if (ret_val)
+			goto out;
+	}
+	kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) &
+		       E1000_KMRNCTRLSTA_OFFSET) | E1000_KMRNCTRLSTA_REN;
+	ew32(KMRNCTRLSTA, kmrnctrlsta);
+	e1e_flush();
+	udelay(2);
+	kmrnctrlsta = er32(KMRNCTRLSTA);
+	*data = (u16)kmrnctrlsta;
+	if (!locked)
+		hw->phy.ops.release(hw);
+out:
+	return ret_val;
+}
+/**
+*  e1000e_read_kmrn_reg -  Read kumeran register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read
+*  @data: pointer to the read data
+*
+*  Acquires semaphore then reads the PHY register at offset using the
+*  kumeran interface.  The information retrieved is stored in data.
+*  Release the acquired semaphore before exiting.
+**/
+s32 e1000e_read_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 *data)
+{
+	return __e1000_read_kmrn_reg(hw, offset, data, false);
+}
+/**
+*  e1000e_read_kmrn_reg_locked -  Read kumeran register
+*  @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 kumeran interface.  The
+*  information retrieved is stored in data.
+*  Assumes semaphore already acquired.
+**/
+s32 e1000e_read_kmrn_reg_locked(struct e1000_hw *hw, u32 offset, u16 *data)
+{
+	return __e1000_read_kmrn_reg(hw, offset, data, true);
+}
+/**
+*  __e1000_write_kmrn_reg - Write kumeran register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to write to
+*  @data: data to write at register offset
+*  @locked: semaphore has already been acquired or not
+*
+*  Acquires semaphore, if necessary.  Then write the data to PHY register
+*  at the offset using the kumeran interface.  Release any acquired semaphores
+*  before exiting.
+**/
+static s32 __e1000_write_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 data,
+bool locked)
+{
+	u32 kmrnctrlsta;
+	s32 ret_val = 0;
+	if (!locked) {
+		if (!(hw->phy.ops.acquire))
+			goto out;
+		ret_val = hw->phy.ops.acquire(hw);
+		if (ret_val)
+			goto out;
+	}
+	kmrnctrlsta = ((offset << E1000_KMRNCTRLSTA_OFFSET_SHIFT) &
+		       E1000_KMRNCTRLSTA_OFFSET) | data;
+	ew32(KMRNCTRLSTA, kmrnctrlsta);
+	e1e_flush();
+	udelay(2);
+	if (!locked)
+		hw->phy.ops.release(hw);
+out:
+	return ret_val;
+}
+/**
+*  e1000e_write_kmrn_reg -  Write kumeran register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to write to
+*  @data: data to write at register offset
+*
+*  Acquires semaphore then writes the data to the PHY register at the offset
+*  using the kumeran interface.  Release the acquired semaphore before exiting.
+**/
+s32 e1000e_write_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 data)
+{
+	return __e1000_write_kmrn_reg(hw, offset, data, false);
+}
+/**
+*  e1000e_write_kmrn_reg_locked -  Write kumeran register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to write to
+*  @data: data to write at register offset
+*
+*  Write the data to PHY register at the offset using the kumeran interface.
+*  Assumes semaphore already acquired.
+**/
+s32 e1000e_write_kmrn_reg_locked(struct e1000_hw *hw, u32 offset, u16 data)
+{
+	return __e1000_write_kmrn_reg(hw, offset, data, true);
+}
+/**
+*  e1000_copper_link_setup_82577 - Setup 82577 PHY for copper link
+*  @hw: pointer to the HW structure
+*
+*  Sets up Carrier-sense on Transmit and downshift values.
+**/
+s32 e1000_copper_link_setup_82577(struct e1000_hw *hw)
+{
+	s32 ret_val;
+	u16 phy_data;
+	/* Enable CRS on Tx. This must be set for half-duplex operation. */
+	ret_val = e1e_rphy(hw, I82577_CFG_REG, &phy_data);
+	if (ret_val)
+		goto out;
+	phy_data |= I82577_CFG_ASSERT_CRS_ON_TX;
+	/* Enable downshift */
+	phy_data |= I82577_CFG_ENABLE_DOWNSHIFT;
+	ret_val = e1e_wphy(hw, I82577_CFG_REG, phy_data);
+out:
+	return ret_val;
+}
+/**
+*  e1000e_copper_link_setup_m88 - Setup m88 PHY's for copper link
+*  @hw: pointer to the HW structure
+*
+*  Sets up MDI/MDI-X and polarity for m88 PHY's.  If necessary, transmit clock
+*  and downshift values are set also.
+**/
+s32 e1000e_copper_link_setup_m88(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 phy_data;
+	/* Enable CRS on Tx. This must be set for half-duplex operation. */
+	ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
+	if (ret_val)
+		return ret_val;
+	/* For BM PHY this bit is downshift enable */
+	if (phy->type != e1000_phy_bm)
+		phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
+	/*
+	 * Options:
+	 *   MDI/MDI-X = 0 (default)
+	 *   0 - Auto for all speeds
+	 *   1 - MDI mode
+	 *   2 - MDI-X mode
+	 *   3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
+	 */
+	phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
+	switch (phy->mdix) {
+	case 1:
+		phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
+		break;
+	case 2:
+		phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
+		break;
+	case 3:
+		phy_data |= M88E1000_PSCR_AUTO_X_1000T;
+		break;
+	case 0:
+	default:
+		phy_data |= M88E1000_PSCR_AUTO_X_MODE;
+		break;
+	}
+	/*
+	 * Options:
+	 *   disable_polarity_correction = 0 (default)
+	 *       Automatic Correction for Reversed Cable Polarity
+	 *   0 - Disabled
+	 *   1 - Enabled
+	 */
+	phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
+	if (phy->disable_polarity_correction == 1)
+		phy_data |= M88E1000_PSCR_POLARITY_REVERSAL;
+	/* Enable downshift on BM (disabled by default) */
+	if (phy->type == e1000_phy_bm)
+		phy_data |= BME1000_PSCR_ENABLE_DOWNSHIFT;
+	ret_val = e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
+	if (ret_val)
+		return ret_val;
+	if ((phy->type == e1000_phy_m88) &&
+	    (phy->revision < E1000_REVISION_4) &&
+	    (phy->id != BME1000_E_PHY_ID_R2)) {
+		/*
+		 * Force TX_CLK in the Extended PHY Specific Control Register
+		 * to 25MHz clock.
+		 */
+		ret_val = e1e_rphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
+		if (ret_val)
+			return ret_val;
+		phy_data |= M88E1000_EPSCR_TX_CLK_25;
+		if ((phy->revision == 2) &&
+		    (phy->id == M88E1111_I_PHY_ID)) {
+			/* 82573L PHY - set the downshift counter to 5x. */
+			phy_data &= ~M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK;
+			phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X;
+		} else {
+			/* Configure Master and Slave downshift values */
+			phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK |
+				      M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
+			phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X |
+				     M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
+		}
+		ret_val = e1e_wphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
+		if (ret_val)
+			return ret_val;
+	}
+	if ((phy->type == e1000_phy_bm) && (phy->id == BME1000_E_PHY_ID_R2)) {
+		/* Set PHY page 0, register 29 to 0x0003 */
+		ret_val = e1e_wphy(hw, 29, 0x0003);
+		if (ret_val)
+			return ret_val;
+		/* Set PHY page 0, register 30 to 0x0000 */
+		ret_val = e1e_wphy(hw, 30, 0x0000);
+		if (ret_val)
+			return ret_val;
+	}
+	/* Commit the changes. */
+	ret_val = e1000e_commit_phy(hw);
+	if (ret_val) {
+		e_dbg("Error committing the PHY changes\n");
+		return ret_val;
+	}
+	if (phy->type == e1000_phy_82578) {
+		ret_val = e1e_rphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
+		if (ret_val)
+			return ret_val;
+		/* 82578 PHY - set the downshift count to 1x. */
+		phy_data |= I82578_EPSCR_DOWNSHIFT_ENABLE;
+		phy_data &= ~I82578_EPSCR_DOWNSHIFT_COUNTER_MASK;
+		ret_val = e1e_wphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
+		if (ret_val)
+			return ret_val;
+	}
+	return 0;
+}
+/**
+*  e1000e_copper_link_setup_igp - Setup igp PHY's for copper link
+*  @hw: pointer to the HW structure
+*
+*  Sets up LPLU, MDI/MDI-X, polarity, Smartspeed and Master/Slave config for
+*  igp PHY's.
+**/
+s32 e1000e_copper_link_setup_igp(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 data;
+	ret_val = e1000_phy_hw_reset(hw);
+	if (ret_val) {
+		e_dbg("Error resetting the PHY.\n");
+		return ret_val;
+	}
+	/*
+	 * Wait 100ms for MAC to configure PHY from NVM settings, to avoid
+	 * timeout issues when LFS is enabled.
+	 */
+	msleep(100);
+	/* disable lplu d0 during driver init */
+	ret_val = e1000_set_d0_lplu_state(hw, false);
+	if (ret_val) {
+		e_dbg("Error Disabling LPLU D0\n");
+		return ret_val;
+	}
+	/* Configure mdi-mdix settings */
+	ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CTRL, &data);
+	if (ret_val)
+		return ret_val;
+	data &= ~IGP01E1000_PSCR_AUTO_MDIX;
+	switch (phy->mdix) {
+	case 1:
+		data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
+		break;
+	case 2:
+		data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
+		break;
+	case 0:
+	default:
+		data |= IGP01E1000_PSCR_AUTO_MDIX;
+		break;
+	}
+	ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CTRL, data);
+	if (ret_val)
+		return ret_val;
+	/* set auto-master slave resolution settings */
+	if (hw->mac.autoneg) {
+		/*
+		 * when autonegotiation advertisement is only 1000Mbps then we
+		 * should disable SmartSpeed and enable Auto MasterSlave
+		 * resolution as hardware default.
+		 */
+		if (phy->autoneg_advertised == ADVERTISE_1000_FULL) {
+			/* Disable SmartSpeed */
+			ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
+					   &data);
+			if (ret_val)
+				return ret_val;
+			data &= ~IGP01E1000_PSCFR_SMART_SPEED;
+			ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
+					   data);
+			if (ret_val)
+				return ret_val;
+			/* Set auto Master/Slave resolution process */
+			ret_val = e1e_rphy(hw, PHY_1000T_CTRL, &data);
+			if (ret_val)
+				return ret_val;
+			data &= ~CR_1000T_MS_ENABLE;
+			ret_val = e1e_wphy(hw, PHY_1000T_CTRL, data);
+			if (ret_val)
+				return ret_val;
+		}
+		ret_val = e1e_rphy(hw, PHY_1000T_CTRL, &data);
+		if (ret_val)
+			return ret_val;
+		/* load defaults for future use */
+		phy->original_ms_type = (data & CR_1000T_MS_ENABLE) ?
+			((data & CR_1000T_MS_VALUE) ?
+			e1000_ms_force_master :
+			e1000_ms_force_slave) :
+			e1000_ms_auto;
+		switch (phy->ms_type) {
+		case e1000_ms_force_master:
+			data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
+			break;
+		case e1000_ms_force_slave:
+			data |= CR_1000T_MS_ENABLE;
+			data &= ~(CR_1000T_MS_VALUE);
+			break;
+		case e1000_ms_auto:
+			data &= ~CR_1000T_MS_ENABLE;
+		default:
+			break;
+		}
+		ret_val = e1e_wphy(hw, PHY_1000T_CTRL, data);
+	}
+	return ret_val;
+}
+/**
+*  e1000_phy_setup_autoneg - Configure PHY for auto-negotiation
+*  @hw: pointer to the HW structure
+*
+*  Reads the MII auto-neg advertisement register and/or the 1000T control
+*  register and if the PHY is already setup for auto-negotiation, then
+*  return successful.  Otherwise, setup advertisement and flow control to
+*  the appropriate values for the wanted auto-negotiation.
+**/
+static s32 e1000_phy_setup_autoneg(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 mii_autoneg_adv_reg;
+	u16 mii_1000t_ctrl_reg = 0;
+	phy->autoneg_advertised &= phy->autoneg_mask;
+	/* Read the MII Auto-Neg Advertisement Register (Address 4). */
+	ret_val = e1e_rphy(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
+	if (ret_val)
+		return ret_val;
+	if (phy->autoneg_mask & ADVERTISE_1000_FULL) {
+		/* Read the MII 1000Base-T Control Register (Address 9). */
+		ret_val = e1e_rphy(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg);
+		if (ret_val)
+			return ret_val;
+	}
+	/*
+	 * Need to parse both autoneg_advertised and fc and set up
+	 * the appropriate PHY registers.  First we will parse for
+	 * autoneg_advertised software override.  Since we can advertise
+	 * a plethora of combinations, we need to check each bit
+	 * individually.
+	 */
+	/*
+	 * First we clear all the 10/100 mb speed bits in the Auto-Neg
+	 * Advertisement Register (Address 4) and the 1000 mb speed bits in
+	 * the  1000Base-T Control Register (Address 9).
+	 */
+	mii_autoneg_adv_reg &= ~(NWAY_AR_100TX_FD_CAPS |
+				 NWAY_AR_100TX_HD_CAPS |
+				 NWAY_AR_10T_FD_CAPS   |
+				 NWAY_AR_10T_HD_CAPS);
+	mii_1000t_ctrl_reg &= ~(CR_1000T_HD_CAPS | CR_1000T_FD_CAPS);
+	e_dbg("autoneg_advertised %x\n", phy->autoneg_advertised);
+	/* Do we want to advertise 10 Mb Half Duplex? */
+	if (phy->autoneg_advertised & ADVERTISE_10_HALF) {
+		e_dbg("Advertise 10mb Half duplex\n");
+		mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
+	}
+	/* Do we want to advertise 10 Mb Full Duplex? */
+	if (phy->autoneg_advertised & ADVERTISE_10_FULL) {
+		e_dbg("Advertise 10mb Full duplex\n");
+		mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
+	}
+	/* Do we want to advertise 100 Mb Half Duplex? */
+	if (phy->autoneg_advertised & ADVERTISE_100_HALF) {
+		e_dbg("Advertise 100mb Half duplex\n");
+		mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
+	}
+	/* Do we want to advertise 100 Mb Full Duplex? */
+	if (phy->autoneg_advertised & ADVERTISE_100_FULL) {
+		e_dbg("Advertise 100mb Full duplex\n");
+		mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
+	}
+	/* We do not allow the Phy to advertise 1000 Mb Half Duplex */
+	if (phy->autoneg_advertised & ADVERTISE_1000_HALF)
+		e_dbg("Advertise 1000mb Half duplex request denied!\n");
+	/* Do we want to advertise 1000 Mb Full Duplex? */
+	if (phy->autoneg_advertised & ADVERTISE_1000_FULL) {
+		e_dbg("Advertise 1000mb Full duplex\n");
+		mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
+	}
+	/*
+	 * Check for a software override of the flow control settings, and
+	 * setup the PHY advertisement registers accordingly.  If
+	 * auto-negotiation is enabled, then software will have to set the
+	 * "PAUSE" bits to the correct value in the Auto-Negotiation
+	 * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-
+	 * negotiation.
+	 *
+	 * The possible values of the "fc" parameter are:
+	 *      0:  Flow control is completely disabled
+	 *      1:  Rx flow control is enabled (we can receive pause frames
+	 *	  but not send pause frames).
+	 *      2:  Tx flow control is enabled (we can send pause frames
+	 *	  but we do not support receiving pause frames).
+	 *      3:  Both Rx and Tx flow control (symmetric) are enabled.
+	 *  other:  No software override.  The flow control configuration
+	 *	  in the EEPROM is used.
+	 */
+	switch (hw->fc.current_mode) {
+	case e1000_fc_none:
+		/*
+		 * Flow control (Rx & Tx) is completely disabled by a
+		 * software over-ride.
+		 */
+		mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
+		break;
+	case e1000_fc_rx_pause:
+		/*
+		 * Rx Flow control is enabled, and Tx Flow control is
+		 * disabled, by a software over-ride.
+		 *
+		 * Since there really isn't a way to advertise that we are
+		 * capable of Rx Pause ONLY, we will advertise that we
+		 * support both symmetric and asymmetric Rx PAUSE.  Later
+		 * (in e1000e_config_fc_after_link_up) we will disable the
+		 * hw's ability to send PAUSE frames.
+		 */
+		mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
+		break;
+	case e1000_fc_tx_pause:
+		/*
+		 * Tx Flow control is enabled, and Rx Flow control is
+		 * disabled, by a software over-ride.
+		 */
+		mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR;
+		mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE;
+		break;
+	case e1000_fc_full:
+		/*
+		 * Flow control (both Rx and Tx) is enabled by a software
+		 * over-ride.
+		 */
+		mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
+		break;
+	default:
+		e_dbg("Flow control param set incorrectly\n");
+		ret_val = -E1000_ERR_CONFIG;
+		return ret_val;
+	}
+	ret_val = e1e_wphy(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
+	if (ret_val)
+		return ret_val;
+	e_dbg("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
+	if (phy->autoneg_mask & ADVERTISE_1000_FULL)
+		ret_val = e1e_wphy(hw, PHY_1000T_CTRL, mii_1000t_ctrl_reg);
+	return ret_val;
+}
+/**
+*  e1000_copper_link_autoneg - Setup/Enable autoneg for copper link
+*  @hw: pointer to the HW structure
+*
+*  Performs initial bounds checking on autoneg advertisement parameter, then
+*  configure to advertise the full capability.  Setup the PHY to autoneg
+*  and restart the negotiation process between the link partner.  If
+*  autoneg_wait_to_complete, then wait for autoneg to complete before exiting.
+**/
+static s32 e1000_copper_link_autoneg(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 phy_ctrl;
+	/*
+	 * Perform some bounds checking on the autoneg advertisement
+	 * parameter.
+	 */
+	phy->autoneg_advertised &= phy->autoneg_mask;
+	/*
+	 * If autoneg_advertised is zero, we assume it was not defaulted
+	 * by the calling code so we set to advertise full capability.
+	 */
+	if (phy->autoneg_advertised == 0)
+		phy->autoneg_advertised = phy->autoneg_mask;
+	e_dbg("Reconfiguring auto-neg advertisement params\n");
+	ret_val = e1000_phy_setup_autoneg(hw);
+	if (ret_val) {
+		e_dbg("Error Setting up Auto-Negotiation\n");
+		return ret_val;
+	}
+	e_dbg("Restarting Auto-Neg\n");
+	/*
+	 * Restart auto-negotiation by setting the Auto Neg Enable bit and
+	 * the Auto Neg Restart bit in the PHY control register.
+	 */
+	ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_ctrl);
+	if (ret_val)
+		return ret_val;
+	phy_ctrl |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
+	ret_val = e1e_wphy(hw, PHY_CONTROL, phy_ctrl);
+	if (ret_val)
+		return ret_val;
+	/*
+	 * Does the user want to wait for Auto-Neg to complete here, or
+	 * check at a later time (for example, callback routine).
+	 */
+	if (phy->autoneg_wait_to_complete) {
+		ret_val = e1000_wait_autoneg(hw);
+		if (ret_val) {
+			e_dbg("Error while waiting for "
+				 "autoneg to complete\n");
+			return ret_val;
+		}
+	}
+	hw->mac.get_link_status = 1;
+	return ret_val;
+}
+/**
+*  e1000e_setup_copper_link - Configure copper link settings
+*  @hw: pointer to the HW structure
+*
+*  Calls the appropriate function to configure the link for auto-neg or forced
+*  speed and duplex.  Then we check for link, once link is established calls
+*  to configure collision distance and flow control are called.  If link is
+*  not established, we return -E1000_ERR_PHY (-2).
+**/
+s32 e1000e_setup_copper_link(struct e1000_hw *hw)
+{
+	s32 ret_val;
+	bool link;
+	if (hw->mac.autoneg) {
+		/*
+		 * Setup autoneg and flow control advertisement and perform
+		 * autonegotiation.
+		 */
+		ret_val = e1000_copper_link_autoneg(hw);
+		if (ret_val)
+			return ret_val;
+	} else {
+		/*
+		 * PHY will be set to 10H, 10F, 100H or 100F
+		 * depending on user settings.
+		 */
+		e_dbg("Forcing Speed and Duplex\n");
+		ret_val = e1000_phy_force_speed_duplex(hw);
+		if (ret_val) {
+			e_dbg("Error Forcing Speed and Duplex\n");
+			return ret_val;
+		}
+	}
+	/*
+	 * Check link status. Wait up to 100 microseconds for link to become
+	 * valid.
+	 */
+	ret_val = e1000e_phy_has_link_generic(hw,
+					     COPPER_LINK_UP_LIMIT,
+					     10,
+					     &link);
+	if (ret_val)
+		return ret_val;
+	if (link) {
+		e_dbg("Valid link established!!!\n");
+		e1000e_config_collision_dist(hw);
+		ret_val = e1000e_config_fc_after_link_up(hw);
+	} else {
+		e_dbg("Unable to establish link!!!\n");
+	}
+	return ret_val;
+}
+/**
+*  e1000e_phy_force_speed_duplex_igp - Force speed/duplex for igp PHY
+*  @hw: pointer to the HW structure
+*
+*  Calls the PHY setup function to force speed and duplex.  Clears the
+*  auto-crossover to force MDI manually.  Waits for link and returns
+*  successful if link up is successful, else -E1000_ERR_PHY (-2).
+**/
+s32 e1000e_phy_force_speed_duplex_igp(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 phy_data;
+	bool link;
+	ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_data);
+	if (ret_val)
+		return ret_val;
+	e1000e_phy_force_speed_duplex_setup(hw, &phy_data);
+	ret_val = e1e_wphy(hw, PHY_CONTROL, phy_data);
+	if (ret_val)
+		return ret_val;
+	/*
+	 * Clear Auto-Crossover to force MDI manually.  IGP requires MDI
+	 * forced whenever speed and duplex are forced.
+	 */
+	ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
+	if (ret_val)
+		return ret_val;
+	phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
+	phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
+	ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
+	if (ret_val)
+		return ret_val;
+	e_dbg("IGP PSCR: %X\n", phy_data);
+	udelay(1);
+	if (phy->autoneg_wait_to_complete) {
+		e_dbg("Waiting for forced speed/duplex link on IGP phy.\n");
+		ret_val = e1000e_phy_has_link_generic(hw,
+						     PHY_FORCE_LIMIT,
+						     100000,
+						     &link);
+		if (ret_val)
+			return ret_val;
+		if (!link)
+			e_dbg("Link taking longer than expected.\n");
+		/* Try once more */
+		ret_val = e1000e_phy_has_link_generic(hw,
+						     PHY_FORCE_LIMIT,
+						     100000,
+						     &link);
+		if (ret_val)
+			return ret_val;
+	}
+	return ret_val;
+}
+/**
+*  e1000e_phy_force_speed_duplex_m88 - Force speed/duplex for m88 PHY
+*  @hw: pointer to the HW structure
+*
+*  Calls the PHY setup function to force speed and duplex.  Clears the
+*  auto-crossover to force MDI manually.  Resets the PHY to commit the
+*  changes.  If time expires while waiting for link up, we reset the DSP.
+*  After reset, TX_CLK and CRS on Tx must be set.  Return successful upon
+*  successful completion, else return corresponding error code.
+**/
+s32 e1000e_phy_force_speed_duplex_m88(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 phy_data;
+	bool link;
+	/*
+	 * Clear Auto-Crossover to force MDI manually.  M88E1000 requires MDI
+	 * forced whenever speed and duplex are forced.
+	 */
+	ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
+	if (ret_val)
+		return ret_val;
+	phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
+	ret_val = e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
+	if (ret_val)
+		return ret_val;
+	e_dbg("M88E1000 PSCR: %X\n", phy_data);
+	ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_data);
+	if (ret_val)
+		return ret_val;
+	e1000e_phy_force_speed_duplex_setup(hw, &phy_data);
+	ret_val = e1e_wphy(hw, PHY_CONTROL, phy_data);
+	if (ret_val)
+		return ret_val;
+	/* Reset the phy to commit changes. */
+	ret_val = e1000e_commit_phy(hw);
+	if (ret_val)
+		return ret_val;
+	if (phy->autoneg_wait_to_complete) {
+		e_dbg("Waiting for forced speed/duplex link on M88 phy.\n");
+		ret_val = e1000e_phy_has_link_generic(hw, PHY_FORCE_LIMIT,
+						     100000, &link);
+		if (ret_val)
+			return ret_val;
+		if (!link) {
+			if (hw->phy.type != e1000_phy_m88) {
+				e_dbg("Link taking longer than expected.\n");
+			} else {
+				/*
+				 * We didn't get link.
+				 * Reset the DSP and cross our fingers.
+				 */
+				ret_val = e1e_wphy(hw, M88E1000_PHY_PAGE_SELECT,
+						   0x001d);
+				if (ret_val)
+					return ret_val;
+				ret_val = e1000e_phy_reset_dsp(hw);
+				if (ret_val)
+					return ret_val;
+			}
+		}
+		/* Try once more */
+		ret_val = e1000e_phy_has_link_generic(hw, PHY_FORCE_LIMIT,
+						     100000, &link);
+		if (ret_val)
+			return ret_val;
+	}
+	if (hw->phy.type != e1000_phy_m88)
+		return 0;
+	ret_val = e1e_rphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
+	if (ret_val)
+		return ret_val;
+	/*
+	 * Resetting the phy means we need to re-force TX_CLK in the
+	 * Extended PHY Specific Control Register to 25MHz clock from
+	 * the reset value of 2.5MHz.
+	 */
+	phy_data |= M88E1000_EPSCR_TX_CLK_25;
+	ret_val = e1e_wphy(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
+	if (ret_val)
+		return ret_val;
+	/*
+	 * In addition, we must re-enable CRS on Tx for both half and full
+	 * duplex.
+	 */
+	ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
+	if (ret_val)
+		return ret_val;
+	phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
+	ret_val = e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
+	return ret_val;
+}
+/**
+*  e1000_phy_force_speed_duplex_ife - Force PHY speed & duplex
+*  @hw: pointer to the HW structure
+*
+*  Forces the speed and duplex settings of the PHY.
+*  This is a function pointer entry point only called by
+*  PHY setup routines.
+**/
+s32 e1000_phy_force_speed_duplex_ife(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 data;
+	bool link;
+	ret_val = e1e_rphy(hw, PHY_CONTROL, &data);
+	if (ret_val)
+		goto out;
+	e1000e_phy_force_speed_duplex_setup(hw, &data);
+	ret_val = e1e_wphy(hw, PHY_CONTROL, data);
+	if (ret_val)
+		goto out;
+	/* Disable MDI-X support for 10/100 */
+	ret_val = e1e_rphy(hw, IFE_PHY_MDIX_CONTROL, &data);
+	if (ret_val)
+		goto out;
+	data &= ~IFE_PMC_AUTO_MDIX;
+	data &= ~IFE_PMC_FORCE_MDIX;
+	ret_val = e1e_wphy(hw, IFE_PHY_MDIX_CONTROL, data);
+	if (ret_val)
+		goto out;
+	e_dbg("IFE PMC: %X\n", data);
+	udelay(1);
+	if (phy->autoneg_wait_to_complete) {
+		e_dbg("Waiting for forced speed/duplex link on IFE phy.\n");
+		ret_val = e1000e_phy_has_link_generic(hw,
+		                                     PHY_FORCE_LIMIT,
+		                                     100000,
+		                                     &link);
+		if (ret_val)
+			goto out;
+		if (!link)
+			e_dbg("Link taking longer than expected.\n");
+		/* Try once more */
+		ret_val = e1000e_phy_has_link_generic(hw,
+		                                     PHY_FORCE_LIMIT,
+		                                     100000,
+		                                     &link);
+		if (ret_val)
+			goto out;
+	}
+out:
+	return ret_val;
+}
+/**
+*  e1000e_phy_force_speed_duplex_setup - Configure forced PHY speed/duplex
+*  @hw: pointer to the HW structure
+*  @phy_ctrl: pointer to current value of PHY_CONTROL
+*
+*  Forces speed and duplex on the PHY by doing the following: disable flow
+*  control, force speed/duplex on the MAC, disable auto speed detection,
+*  disable auto-negotiation, configure duplex, configure speed, configure
+*  the collision distance, write configuration to CTRL register.  The
+*  caller must write to the PHY_CONTROL register for these settings to
+*  take affect.
+**/
+void e1000e_phy_force_speed_duplex_setup(struct e1000_hw *hw, u16 *phy_ctrl)
+{
+	struct e1000_mac_info *mac = &hw->mac;
+	u32 ctrl;
+	/* Turn off flow control when forcing speed/duplex */
+	hw->fc.current_mode = e1000_fc_none;
+	/* Force speed/duplex on the mac */
+	ctrl = er32(CTRL);
+	ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
+	ctrl &= ~E1000_CTRL_SPD_SEL;
+	/* Disable Auto Speed Detection */
+	ctrl &= ~E1000_CTRL_ASDE;
+	/* Disable autoneg on the phy */
+	*phy_ctrl &= ~MII_CR_AUTO_NEG_EN;
+	/* Forcing Full or Half Duplex? */
+	if (mac->forced_speed_duplex & E1000_ALL_HALF_DUPLEX) {
+		ctrl &= ~E1000_CTRL_FD;
+		*phy_ctrl &= ~MII_CR_FULL_DUPLEX;
+		e_dbg("Half Duplex\n");
+	} else {
+		ctrl |= E1000_CTRL_FD;
+		*phy_ctrl |= MII_CR_FULL_DUPLEX;
+		e_dbg("Full Duplex\n");
+	}
+	/* Forcing 10mb or 100mb? */
+	if (mac->forced_speed_duplex & E1000_ALL_100_SPEED) {
+		ctrl |= E1000_CTRL_SPD_100;
+		*phy_ctrl |= MII_CR_SPEED_100;
+		*phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10);
+		e_dbg("Forcing 100mb\n");
+	} else {
+		ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
+		*phy_ctrl |= MII_CR_SPEED_10;
+		*phy_ctrl &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100);
+		e_dbg("Forcing 10mb\n");
+	}
+	e1000e_config_collision_dist(hw);
+	ew32(CTRL, ctrl);
+}
+/**
+*  e1000e_set_d3_lplu_state - Sets low power link up state for D3
+*  @hw: pointer to the HW structure
+*  @active: boolean used to enable/disable lplu
+*
+*  Success returns 0, Failure returns 1
+*
+*  The low power link up (lplu) state is set to the power management level D3
+*  and SmartSpeed is disabled when active is true, else clear lplu for D3
+*  and enable Smartspeed.  LPLU and Smartspeed are mutually exclusive.  LPLU
+*  is used during Dx states where the power conservation is most important.
+*  During driver activity, SmartSpeed should be enabled so performance is
+*  maintained.
+**/
+s32 e1000e_set_d3_lplu_state(struct e1000_hw *hw, bool active)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 data;
+	ret_val = e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &data);
+	if (ret_val)
+		return ret_val;
+	if (!active) {
+		data &= ~IGP02E1000_PM_D3_LPLU;
+		ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
+		if (ret_val)
+			return ret_val;
+		/*
+		 * 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 = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
+					   &data);
+			if (ret_val)
+				return ret_val;
+			data |= IGP01E1000_PSCFR_SMART_SPEED;
+			ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
+					   data);
+			if (ret_val)
+				return ret_val;
+		} else if (phy->smart_speed == e1000_smart_speed_off) {
+			ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG,
+					   &data);
+			if (ret_val)
+				return ret_val;
+			data &= ~IGP01E1000_PSCFR_SMART_SPEED;
+			ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG,
+					   data);
+			if (ret_val)
+				return ret_val;
+		}
+	} else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
+		   (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
+		   (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
+		data |= IGP02E1000_PM_D3_LPLU;
+		ret_val = e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, data);
+		if (ret_val)
+			return ret_val;
+		/* When LPLU is enabled, we should disable SmartSpeed */
+		ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_CONFIG, &data);
+		if (ret_val)
+			return ret_val;
+		data &= ~IGP01E1000_PSCFR_SMART_SPEED;
+		ret_val = e1e_wphy(hw, IGP01E1000_PHY_PORT_CONFIG, data);
+	}
+	return ret_val;
+}
+/**
+*  e1000e_check_downshift - Checks whether a downshift in speed occurred
+*  @hw: pointer to the HW structure
+*
+*  Success returns 0, Failure returns 1
+*
+*  A downshift is detected by querying the PHY link health.
+**/
+s32 e1000e_check_downshift(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 phy_data, offset, mask;
+	switch (phy->type) {
+	case e1000_phy_m88:
+	case e1000_phy_gg82563:
+	case e1000_phy_bm:
+	case e1000_phy_82578:
+		offset	= M88E1000_PHY_SPEC_STATUS;
+		mask	= M88E1000_PSSR_DOWNSHIFT;
+		break;
+	case e1000_phy_igp_2:
+	case e1000_phy_igp_3:
+		offset	= IGP01E1000_PHY_LINK_HEALTH;
+		mask	= IGP01E1000_PLHR_SS_DOWNGRADE;
+		break;
+	default:
+		/* speed downshift not supported */
+		phy->speed_downgraded = false;
+		return 0;
+	}
+	ret_val = e1e_rphy(hw, offset, &phy_data);
+	if (!ret_val)
+		phy->speed_downgraded = (phy_data & mask);
+	return ret_val;
+}
+/**
+*  e1000_check_polarity_m88 - Checks the polarity.
+*  @hw: pointer to the HW structure
+*
+*  Success returns 0, Failure returns -E1000_ERR_PHY (-2)
+*
+*  Polarity is determined based on the PHY specific status register.
+**/
+s32 e1000_check_polarity_m88(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 data;
+	ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &data);
+	if (!ret_val)
+		phy->cable_polarity = (data & M88E1000_PSSR_REV_POLARITY)
+				      ? e1000_rev_polarity_reversed
+				      : e1000_rev_polarity_normal;
+	return ret_val;
+}
+/**
+*  e1000_check_polarity_igp - Checks the polarity.
+*  @hw: pointer to the HW structure
+*
+*  Success returns 0, Failure returns -E1000_ERR_PHY (-2)
+*
+*  Polarity is determined based on the PHY port status register, and the
+*  current speed (since there is no polarity at 100Mbps).
+**/
+s32 e1000_check_polarity_igp(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 data, offset, mask;
+	/*
+	 * Polarity is determined based on the speed of
+	 * our connection.
+	 */
+	ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_STATUS, &data);
+	if (ret_val)
+		return ret_val;
+	if ((data & IGP01E1000_PSSR_SPEED_MASK) ==
+	    IGP01E1000_PSSR_SPEED_1000MBPS) {
+		offset	= IGP01E1000_PHY_PCS_INIT_REG;
+		mask	= IGP01E1000_PHY_POLARITY_MASK;
+	} else {
+		/*
+		 * This really only applies to 10Mbps since
+		 * there is no polarity for 100Mbps (always 0).
+		 */
+		offset	= IGP01E1000_PHY_PORT_STATUS;
+		mask	= IGP01E1000_PSSR_POLARITY_REVERSED;
+	}
+	ret_val = e1e_rphy(hw, offset, &data);
+	if (!ret_val)
+		phy->cable_polarity = (data & mask)
+				      ? e1000_rev_polarity_reversed
+				      : e1000_rev_polarity_normal;
+	return ret_val;
+}
+/**
+*  e1000_check_polarity_ife - Check cable polarity for IFE PHY
+*  @hw: pointer to the HW structure
+*
+*  Polarity is determined on the polarity reversal feature being enabled.
+**/
+s32 e1000_check_polarity_ife(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 phy_data, offset, mask;
+	/*
+	 * Polarity is determined based on the reversal feature being enabled.
+	 */
+	if (phy->polarity_correction) {
+		offset = IFE_PHY_EXTENDED_STATUS_CONTROL;
+		mask = IFE_PESC_POLARITY_REVERSED;
+	} else {
+		offset = IFE_PHY_SPECIAL_CONTROL;
+		mask = IFE_PSC_FORCE_POLARITY;
+	}
+	ret_val = e1e_rphy(hw, offset, &phy_data);
+	if (!ret_val)
+		phy->cable_polarity = (phy_data & mask)
+		                       ? e1000_rev_polarity_reversed
+		                       : e1000_rev_polarity_normal;
+	return ret_val;
+}
+/**
+*  e1000_wait_autoneg - Wait for auto-neg completion
+*  @hw: pointer to the HW structure
+*
+*  Waits for auto-negotiation to complete or for the auto-negotiation time
+*  limit to expire, which ever happens first.
+**/
+static s32 e1000_wait_autoneg(struct e1000_hw *hw)
+{
+	s32 ret_val = 0;
+	u16 i, phy_status;
+	/* Break after autoneg completes or PHY_AUTO_NEG_LIMIT expires. */
+	for (i = PHY_AUTO_NEG_LIMIT; i > 0; i--) {
+		ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status);
+		if (ret_val)
+			break;
+		ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status);
+		if (ret_val)
+			break;
+		if (phy_status & MII_SR_AUTONEG_COMPLETE)
+			break;
+		msleep(100);
+	}
+	/*
+	 * PHY_AUTO_NEG_TIME expiration doesn't guarantee auto-negotiation
+	 * has completed.
+	 */
+	return ret_val;
+}
+/**
+*  e1000e_phy_has_link_generic - Polls PHY for link
+*  @hw: pointer to the HW structure
+*  @iterations: number of times to poll for link
+*  @usec_interval: delay between polling attempts
+*  @success: pointer to whether polling was successful or not
+*
+*  Polls the PHY status register for link, 'iterations' number of times.
+**/
+s32 e1000e_phy_has_link_generic(struct e1000_hw *hw, u32 iterations,
+			       u32 usec_interval, bool *success)
+{
+	s32 ret_val = 0;
+	u16 i, phy_status;
+	for (i = 0; i < iterations; i++) {
+		/*
+		 * Some PHYs require the PHY_STATUS register to be read
+		 * twice due to the link bit being sticky.  No harm doing
+		 * it across the board.
+		 */
+		ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status);
+		if (ret_val)
+			/*
+			 * If the first read fails, another entity may have
+			 * ownership of the resources, wait and try again to
+			 * see if they have relinquished the resources yet.
+			 */
+			udelay(usec_interval);
+		ret_val = e1e_rphy(hw, PHY_STATUS, &phy_status);
+		if (ret_val)
+			break;
+		if (phy_status & MII_SR_LINK_STATUS)
+			break;
+		if (usec_interval >= 1000)
+			mdelay(usec_interval/1000);
+		else
+			udelay(usec_interval);
+	}
+	*success = (i < iterations);
+	return ret_val;
+}
+/**
+*  e1000e_get_cable_length_m88 - Determine cable length for m88 PHY
+*  @hw: pointer to the HW structure
+*
+*  Reads the PHY specific status register to retrieve the cable length
+*  information.  The cable length is determined by averaging the minimum and
+*  maximum values to get the "average" cable length.  The m88 PHY has four
+*  possible cable length values, which are:
+*	Register Value		Cable Length
+*	0			< 50 meters
+*	1			50 - 80 meters
+*	2			80 - 110 meters
+*	3			110 - 140 meters
+*	4			> 140 meters
+**/
+s32 e1000e_get_cable_length_m88(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 phy_data, index;
+	ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
+	if (ret_val)
+		goto out;
+	index = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
+	        M88E1000_PSSR_CABLE_LENGTH_SHIFT;
+	if (index >= M88E1000_CABLE_LENGTH_TABLE_SIZE - 1) {
+		ret_val = -E1000_ERR_PHY;
+		goto out;
+	}
+	phy->min_cable_length = e1000_m88_cable_length_table[index];
+	phy->max_cable_length = e1000_m88_cable_length_table[index + 1];
+	phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
+out:
+	return ret_val;
+}
+/**
+*  e1000e_get_cable_length_igp_2 - Determine cable length for igp2 PHY
+*  @hw: pointer to the HW structure
+*
+*  The automatic gain control (agc) normalizes the amplitude of the
+*  received signal, adjusting for the attenuation produced by the
+*  cable.  By reading the AGC registers, which represent the
+*  combination of coarse and fine gain value, the value can be put
+*  into a lookup table to obtain the approximate cable length
+*  for each channel.
+**/
+s32 e1000e_get_cable_length_igp_2(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 phy_data, i, agc_value = 0;
+	u16 cur_agc_index, max_agc_index = 0;
+	u16 min_agc_index = IGP02E1000_CABLE_LENGTH_TABLE_SIZE - 1;
+	static const u16 agc_reg_array[IGP02E1000_PHY_CHANNEL_NUM] = {
+	       IGP02E1000_PHY_AGC_A,
+	       IGP02E1000_PHY_AGC_B,
+	       IGP02E1000_PHY_AGC_C,
+	       IGP02E1000_PHY_AGC_D
+	};
+	/* Read the AGC registers for all channels */
+	for (i = 0; i < IGP02E1000_PHY_CHANNEL_NUM; i++) {
+		ret_val = e1e_rphy(hw, agc_reg_array[i], &phy_data);
+		if (ret_val)
+			return ret_val;
+		/*
+		 * Getting bits 15:9, which represent the combination of
+		 * coarse and fine gain values.  The result is a number
+		 * that can be put into the lookup table to obtain the
+		 * approximate cable length.
+		 */
+		cur_agc_index = (phy_data >> IGP02E1000_AGC_LENGTH_SHIFT) &
+				IGP02E1000_AGC_LENGTH_MASK;
+		/* Array index bound check. */
+		if ((cur_agc_index >= IGP02E1000_CABLE_LENGTH_TABLE_SIZE) ||
+		    (cur_agc_index == 0))
+			return -E1000_ERR_PHY;
+		/* Remove min & max AGC values from calculation. */
+		if (e1000_igp_2_cable_length_table[min_agc_index] >
+		    e1000_igp_2_cable_length_table[cur_agc_index])
+			min_agc_index = cur_agc_index;
+		if (e1000_igp_2_cable_length_table[max_agc_index] <
+		    e1000_igp_2_cable_length_table[cur_agc_index])
+			max_agc_index = cur_agc_index;
+		agc_value += e1000_igp_2_cable_length_table[cur_agc_index];
+	}
+	agc_value -= (e1000_igp_2_cable_length_table[min_agc_index] +
+		      e1000_igp_2_cable_length_table[max_agc_index]);
+	agc_value /= (IGP02E1000_PHY_CHANNEL_NUM - 2);
+	/* Calculate cable length with the error range of +/- 10 meters. */
+	phy->min_cable_length = ((agc_value - IGP02E1000_AGC_RANGE) > 0) ?
+				 (agc_value - IGP02E1000_AGC_RANGE) : 0;
+	phy->max_cable_length = agc_value + IGP02E1000_AGC_RANGE;
+	phy->cable_length = (phy->min_cable_length + phy->max_cable_length) / 2;
+	return ret_val;
+}
+/**
+*  e1000e_get_phy_info_m88 - Retrieve PHY information
+*  @hw: pointer to the HW structure
+*
+*  Valid for only copper links.  Read the PHY status register (sticky read)
+*  to verify that link is up.  Read the PHY special control register to
+*  determine the polarity and 10base-T extended distance.  Read the PHY
+*  special status register to determine MDI/MDIx and current speed.  If
+*  speed is 1000, then determine cable length, local and remote receiver.
+**/
+s32 e1000e_get_phy_info_m88(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32  ret_val;
+	u16 phy_data;
+	bool link;
+	if (phy->media_type != e1000_media_type_copper) {
+		e_dbg("Phy info is only valid for copper media\n");
+		return -E1000_ERR_CONFIG;
+	}
+	ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
+	if (ret_val)
+		return ret_val;
+	if (!link) {
+		e_dbg("Phy info is only valid if link is up\n");
+		return -E1000_ERR_CONFIG;
+	}
+	ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
+	if (ret_val)
+		return ret_val;
+	phy->polarity_correction = (phy_data &
+				    M88E1000_PSCR_POLARITY_REVERSAL);
+	ret_val = e1000_check_polarity_m88(hw);
+	if (ret_val)
+		return ret_val;
+	ret_val = e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
+	if (ret_val)
+		return ret_val;
+	phy->is_mdix = (phy_data & M88E1000_PSSR_MDIX);
+	if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) {
+		ret_val = e1000_get_cable_length(hw);
+		if (ret_val)
+			return ret_val;
+		ret_val = e1e_rphy(hw, PHY_1000T_STATUS, &phy_data);
+		if (ret_val)
+			return ret_val;
+		phy->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS)
+				? e1000_1000t_rx_status_ok
+				: e1000_1000t_rx_status_not_ok;
+		phy->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS)
+				 ? e1000_1000t_rx_status_ok
+				 : e1000_1000t_rx_status_not_ok;
+	} else {
+		/* Set values to "undefined" */
+		phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
+		phy->local_rx = e1000_1000t_rx_status_undefined;
+		phy->remote_rx = e1000_1000t_rx_status_undefined;
+	}
+	return ret_val;
+}
+/**
+*  e1000e_get_phy_info_igp - Retrieve igp PHY information
+*  @hw: pointer to the HW structure
+*
+*  Read PHY status to determine if link is up.  If link is up, then
+*  set/determine 10base-T extended distance and polarity correction.  Read
+*  PHY port status to determine MDI/MDIx and speed.  Based on the speed,
+*  determine on the cable length, local and remote receiver.
+**/
+s32 e1000e_get_phy_info_igp(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 data;
+	bool link;
+	ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
+	if (ret_val)
+		return ret_val;
+	if (!link) {
+		e_dbg("Phy info is only valid if link is up\n");
+		return -E1000_ERR_CONFIG;
+	}
+	phy->polarity_correction = true;
+	ret_val = e1000_check_polarity_igp(hw);
+	if (ret_val)
+		return ret_val;
+	ret_val = e1e_rphy(hw, IGP01E1000_PHY_PORT_STATUS, &data);
+	if (ret_val)
+		return ret_val;
+	phy->is_mdix = (data & IGP01E1000_PSSR_MDIX);
+	if ((data & IGP01E1000_PSSR_SPEED_MASK) ==
+	    IGP01E1000_PSSR_SPEED_1000MBPS) {
+		ret_val = e1000_get_cable_length(hw);
+		if (ret_val)
+			return ret_val;
+		ret_val = e1e_rphy(hw, PHY_1000T_STATUS, &data);
+		if (ret_val)
+			return ret_val;
+		phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS)
+				? e1000_1000t_rx_status_ok
+				: e1000_1000t_rx_status_not_ok;
+		phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS)
+				 ? e1000_1000t_rx_status_ok
+				 : e1000_1000t_rx_status_not_ok;
+	} else {
+		phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
+		phy->local_rx = e1000_1000t_rx_status_undefined;
+		phy->remote_rx = e1000_1000t_rx_status_undefined;
+	}
+	return ret_val;
+}
+/**
+*  e1000_get_phy_info_ife - Retrieves various IFE PHY states
+*  @hw: pointer to the HW structure
+*
+*  Populates "phy" structure with various feature states.
+**/
+s32 e1000_get_phy_info_ife(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 data;
+	bool link;
+	ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
+	if (ret_val)
+		goto out;
+	if (!link) {
+		e_dbg("Phy info is only valid if link is up\n");
+		ret_val = -E1000_ERR_CONFIG;
+		goto out;
+	}
+	ret_val = e1e_rphy(hw, IFE_PHY_SPECIAL_CONTROL, &data);
+	if (ret_val)
+		goto out;
+	phy->polarity_correction = (data & IFE_PSC_AUTO_POLARITY_DISABLE)
+	                           ? false : true;
+	if (phy->polarity_correction) {
+		ret_val = e1000_check_polarity_ife(hw);
+		if (ret_val)
+			goto out;
+	} else {
+		/* Polarity is forced */
+		phy->cable_polarity = (data & IFE_PSC_FORCE_POLARITY)
+		                      ? e1000_rev_polarity_reversed
+		                      : e1000_rev_polarity_normal;
+	}
+	ret_val = e1e_rphy(hw, IFE_PHY_MDIX_CONTROL, &data);
+	if (ret_val)
+		goto out;
+	phy->is_mdix = (data & IFE_PMC_MDIX_STATUS) ? true : false;
+	/* The following parameters are undefined for 10/100 operation. */
+	phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
+	phy->local_rx = e1000_1000t_rx_status_undefined;
+	phy->remote_rx = e1000_1000t_rx_status_undefined;
+out:
+	return ret_val;
+}
+/**
+*  e1000e_phy_sw_reset - PHY software reset
+*  @hw: pointer to the HW structure
+*
+*  Does a software reset of the PHY by reading the PHY control register and
+*  setting/write the control register reset bit to the PHY.
+**/
+s32 e1000e_phy_sw_reset(struct e1000_hw *hw)
+{
+	s32 ret_val;
+	u16 phy_ctrl;
+	ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_ctrl);
+	if (ret_val)
+		return ret_val;
+	phy_ctrl |= MII_CR_RESET;
+	ret_val = e1e_wphy(hw, PHY_CONTROL, phy_ctrl);
+	if (ret_val)
+		return ret_val;
+	udelay(1);
+	return ret_val;
+}
+/**
+*  e1000e_phy_hw_reset_generic - PHY hardware reset
+*  @hw: pointer to the HW structure
+*
+*  Verify the reset block is not blocking us from resetting.  Acquire
+*  semaphore (if necessary) and read/set/write the device control reset
+*  bit in the PHY.  Wait the appropriate delay time for the device to
+*  reset and release the semaphore (if necessary).
+**/
+s32 e1000e_phy_hw_reset_generic(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u32 ctrl;
+	ret_val = e1000_check_reset_block(hw);
+	if (ret_val)
+		return 0;
+	ret_val = phy->ops.acquire(hw);
+	if (ret_val)
+		return ret_val;
+	ctrl = er32(CTRL);
+	ew32(CTRL, ctrl | E1000_CTRL_PHY_RST);
+	e1e_flush();
+	udelay(phy->reset_delay_us);
+	ew32(CTRL, ctrl);
+	e1e_flush();
+	udelay(150);
+	phy->ops.release(hw);
+	return e1000_get_phy_cfg_done(hw);
+}
+/**
+*  e1000e_get_cfg_done - Generic configuration done
+*  @hw: pointer to the HW structure
+*
+*  Generic function to wait 10 milli-seconds for configuration to complete
+*  and return success.
+**/
+s32 e1000e_get_cfg_done(struct e1000_hw *hw)
+{
+	mdelay(10);
+	return 0;
+}
+/**
+*  e1000e_phy_init_script_igp3 - Inits the IGP3 PHY
+*  @hw: pointer to the HW structure
+*
+*  Initializes a Intel Gigabit PHY3 when an EEPROM is not present.
+**/
+s32 e1000e_phy_init_script_igp3(struct e1000_hw *hw)
+{
+	e_dbg("Running IGP 3 PHY init script\n");
+	/* PHY init IGP 3 */
+	/* Enable rise/fall, 10-mode work in class-A */
+	e1e_wphy(hw, 0x2F5B, 0x9018);
+	/* Remove all caps from Replica path filter */
+	e1e_wphy(hw, 0x2F52, 0x0000);
+	/* Bias trimming for ADC, AFE and Driver (Default) */
+	e1e_wphy(hw, 0x2FB1, 0x8B24);
+	/* Increase Hybrid poly bias */
+	e1e_wphy(hw, 0x2FB2, 0xF8F0);
+	/* Add 4% to Tx amplitude in Gig mode */
+	e1e_wphy(hw, 0x2010, 0x10B0);
+	/* Disable trimming (TTT) */
+	e1e_wphy(hw, 0x2011, 0x0000);
+	/* Poly DC correction to 94.6% + 2% for all channels */
+	e1e_wphy(hw, 0x20DD, 0x249A);
+	/* ABS DC correction to 95.9% */
+	e1e_wphy(hw, 0x20DE, 0x00D3);
+	/* BG temp curve trim */
+	e1e_wphy(hw, 0x28B4, 0x04CE);
+	/* Increasing ADC OPAMP stage 1 currents to max */
+	e1e_wphy(hw, 0x2F70, 0x29E4);
+	/* Force 1000 ( required for enabling PHY regs configuration) */
+	e1e_wphy(hw, 0x0000, 0x0140);
+	/* Set upd_freq to 6 */
+	e1e_wphy(hw, 0x1F30, 0x1606);
+	/* Disable NPDFE */
+	e1e_wphy(hw, 0x1F31, 0xB814);
+	/* Disable adaptive fixed FFE (Default) */
+	e1e_wphy(hw, 0x1F35, 0x002A);
+	/* Enable FFE hysteresis */
+	e1e_wphy(hw, 0x1F3E, 0x0067);
+	/* Fixed FFE for short cable lengths */
+	e1e_wphy(hw, 0x1F54, 0x0065);
+	/* Fixed FFE for medium cable lengths */
+	e1e_wphy(hw, 0x1F55, 0x002A);
+	/* Fixed FFE for long cable lengths */
+	e1e_wphy(hw, 0x1F56, 0x002A);
+	/* Enable Adaptive Clip Threshold */
+	e1e_wphy(hw, 0x1F72, 0x3FB0);
+	/* AHT reset limit to 1 */
+	e1e_wphy(hw, 0x1F76, 0xC0FF);
+	/* Set AHT master delay to 127 msec */
+	e1e_wphy(hw, 0x1F77, 0x1DEC);
+	/* Set scan bits for AHT */
+	e1e_wphy(hw, 0x1F78, 0xF9EF);
+	/* Set AHT Preset bits */
+	e1e_wphy(hw, 0x1F79, 0x0210);
+	/* Change integ_factor of channel A to 3 */
+	e1e_wphy(hw, 0x1895, 0x0003);
+	/* Change prop_factor of channels BCD to 8 */
+	e1e_wphy(hw, 0x1796, 0x0008);
+	/* Change cg_icount + enable integbp for channels BCD */
+	e1e_wphy(hw, 0x1798, 0xD008);
+	/*
+	 * Change cg_icount + enable integbp + change prop_factor_master
+	 * to 8 for channel A
+	 */
+	e1e_wphy(hw, 0x1898, 0xD918);
+	/* Disable AHT in Slave mode on channel A */
+	e1e_wphy(hw, 0x187A, 0x0800);
+	/*
+	 * Enable LPLU and disable AN to 1000 in non-D0a states,
+	 * Enable SPD+B2B
+	 */
+	e1e_wphy(hw, 0x0019, 0x008D);
+	/* Enable restart AN on an1000_dis change */
+	e1e_wphy(hw, 0x001B, 0x2080);
+	/* Enable wh_fifo read clock in 10/100 modes */
+	e1e_wphy(hw, 0x0014, 0x0045);
+	/* Restart AN, Speed selection is 1000 */
+	e1e_wphy(hw, 0x0000, 0x1340);
+	return 0;
+}
+/* Internal function pointers */
+/**
+*  e1000_get_phy_cfg_done - Generic PHY configuration done
+*  @hw: pointer to the HW structure
+*
+*  Return success if silicon family did not implement a family specific
+*  get_cfg_done function.
+**/
+static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw)
+{
+	if (hw->phy.ops.get_cfg_done)
+		return hw->phy.ops.get_cfg_done(hw);
+	return 0;
+}
+/**
+*  e1000_phy_force_speed_duplex - Generic force PHY speed/duplex
+*  @hw: pointer to the HW structure
+*
+*  When the silicon family has not implemented a forced speed/duplex
+*  function for the PHY, simply return 0.
+**/
+static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw)
+{
+	if (hw->phy.ops.force_speed_duplex)
+		return hw->phy.ops.force_speed_duplex(hw);
+	return 0;
+}
+/**
+*  e1000e_get_phy_type_from_id - Get PHY type from id
+*  @phy_id: phy_id read from the phy
+*
+*  Returns the phy type from the id.
+**/
+enum e1000_phy_type e1000e_get_phy_type_from_id(u32 phy_id)
+{
+	enum e1000_phy_type phy_type = e1000_phy_unknown;
+	switch (phy_id) {
+	case M88E1000_I_PHY_ID:
+	case M88E1000_E_PHY_ID:
+	case M88E1111_I_PHY_ID:
+	case M88E1011_I_PHY_ID:
+		phy_type = e1000_phy_m88;
+		break;
+	case IGP01E1000_I_PHY_ID: /* IGP 1 & 2 share this */
+		phy_type = e1000_phy_igp_2;
+		break;
+	case GG82563_E_PHY_ID:
+		phy_type = e1000_phy_gg82563;
+		break;
+	case IGP03E1000_E_PHY_ID:
+		phy_type = e1000_phy_igp_3;
+		break;
+	case IFE_E_PHY_ID:
+	case IFE_PLUS_E_PHY_ID:
+	case IFE_C_E_PHY_ID:
+		phy_type = e1000_phy_ife;
+		break;
+	case BME1000_E_PHY_ID:
+	case BME1000_E_PHY_ID_R2:
+		phy_type = e1000_phy_bm;
+		break;
+	case I82578_E_PHY_ID:
+		phy_type = e1000_phy_82578;
+		break;
+	case I82577_E_PHY_ID:
+		phy_type = e1000_phy_82577;
+		break;
+	case I82579_E_PHY_ID:
+		phy_type = e1000_phy_82579;
+		break;
+	default:
+		phy_type = e1000_phy_unknown;
+		break;
+	}
+	return phy_type;
+}
+/**
+*  e1000e_determine_phy_address - Determines PHY address.
+*  @hw: pointer to the HW structure
+*
+*  This uses a trial and error method to loop through possible PHY
+*  addresses. It tests each by reading the PHY ID registers and
+*  checking for a match.
+**/
+s32 e1000e_determine_phy_address(struct e1000_hw *hw)
+{
+	s32 ret_val = -E1000_ERR_PHY_TYPE;
+	u32 phy_addr = 0;
+	u32 i;
+	enum e1000_phy_type phy_type = e1000_phy_unknown;
+	hw->phy.id = phy_type;
+	for (phy_addr = 0; phy_addr < E1000_MAX_PHY_ADDR; phy_addr++) {
+		hw->phy.addr = phy_addr;
+		i = 0;
+		do {
+			e1000e_get_phy_id(hw);
+			phy_type = e1000e_get_phy_type_from_id(hw->phy.id);
+			/*
+			 * If phy_type is valid, break - we found our
+			 * PHY address
+			 */
+			if (phy_type  != e1000_phy_unknown) {
+				ret_val = 0;
+				goto out;
+			}
+			usleep_range(1000, 2000);
+			i++;
+		} while (i < 10);
+	}
+out:
+	return ret_val;
+}
+/**
+*  e1000_get_phy_addr_for_bm_page - Retrieve PHY page address
+*  @page: page to access
+*
+*  Returns the phy address for the page requested.
+**/
+static u32 e1000_get_phy_addr_for_bm_page(u32 page, u32 reg)
+{
+	u32 phy_addr = 2;
+	if ((page >= 768) || (page == 0 && reg == 25) || (reg == 31))
+		phy_addr = 1;
+	return phy_addr;
+}
+/**
+*  e1000e_write_phy_reg_bm - Write BM PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to write to
+*  @data: data to write at register offset
+*
+*  Acquires semaphore, if necessary, then writes the data to PHY register
+*  at the offset.  Release any acquired semaphores before exiting.
+**/
+s32 e1000e_write_phy_reg_bm(struct e1000_hw *hw, u32 offset, u16 data)
+{
+	s32 ret_val;
+	u32 page = offset >> IGP_PAGE_SHIFT;
+	ret_val = hw->phy.ops.acquire(hw);
+	if (ret_val)
+		return ret_val;
+	/* Page 800 works differently than the rest so it has its own func */
+	if (page == BM_WUC_PAGE) {
+		ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, &data,
+							 false, false);
+		goto out;
+	}
+	hw->phy.addr = e1000_get_phy_addr_for_bm_page(page, offset);
+	if (offset > MAX_PHY_MULTI_PAGE_REG) {
+		u32 page_shift, page_select;
+		/*
+		 * Page select is register 31 for phy address 1 and 22 for
+		 * phy address 2 and 3. Page select is shifted only for
+		 * phy address 1.
+		 */
+		if (hw->phy.addr == 1) {
+			page_shift = IGP_PAGE_SHIFT;
+			page_select = IGP01E1000_PHY_PAGE_SELECT;
+		} else {
+			page_shift = 0;
+			page_select = BM_PHY_PAGE_SELECT;
+		}
+		/* Page is shifted left, PHY expects (page x 32) */
+		ret_val = e1000e_write_phy_reg_mdic(hw, page_select,
+		                                    (page << page_shift));
+		if (ret_val)
+			goto out;
+	}
+	ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
+	                                    data);
+out:
+	hw->phy.ops.release(hw);
+	return ret_val;
+}
+/**
+*  e1000e_read_phy_reg_bm - Read BM PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read
+*  @data: pointer to the read data
+*
+*  Acquires semaphore, if necessary, then reads the PHY register at offset
+*  and storing the retrieved information in data.  Release any acquired
+*  semaphores before exiting.
+**/
+s32 e1000e_read_phy_reg_bm(struct e1000_hw *hw, u32 offset, u16 *data)
+{
+	s32 ret_val;
+	u32 page = offset >> IGP_PAGE_SHIFT;
+	ret_val = hw->phy.ops.acquire(hw);
+	if (ret_val)
+		return ret_val;
+	/* Page 800 works differently than the rest so it has its own func */
+	if (page == BM_WUC_PAGE) {
+		ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, data,
+							 true, false);
+		goto out;
+	}
+	hw->phy.addr = e1000_get_phy_addr_for_bm_page(page, offset);
+	if (offset > MAX_PHY_MULTI_PAGE_REG) {
+		u32 page_shift, page_select;
+		/*
+		 * Page select is register 31 for phy address 1 and 22 for
+		 * phy address 2 and 3. Page select is shifted only for
+		 * phy address 1.
+		 */
+		if (hw->phy.addr == 1) {
+			page_shift = IGP_PAGE_SHIFT;
+			page_select = IGP01E1000_PHY_PAGE_SELECT;
+		} else {
+			page_shift = 0;
+			page_select = BM_PHY_PAGE_SELECT;
+		}
+		/* Page is shifted left, PHY expects (page x 32) */
+		ret_val = e1000e_write_phy_reg_mdic(hw, page_select,
+		                                    (page << page_shift));
+		if (ret_val)
+			goto out;
+	}
+	ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
+	                                   data);
+out:
+	hw->phy.ops.release(hw);
+	return ret_val;
+}
+/**
+*  e1000e_read_phy_reg_bm2 - Read BM PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read
+*  @data: pointer to the read data
+*
+*  Acquires semaphore, if necessary, then reads the PHY register at offset
+*  and storing the retrieved information in data.  Release any acquired
+*  semaphores before exiting.
+**/
+s32 e1000e_read_phy_reg_bm2(struct e1000_hw *hw, u32 offset, u16 *data)
+{
+	s32 ret_val;
+	u16 page = (u16)(offset >> IGP_PAGE_SHIFT);
+	ret_val = hw->phy.ops.acquire(hw);
+	if (ret_val)
+		return ret_val;
+	/* Page 800 works differently than the rest so it has its own func */
+	if (page == BM_WUC_PAGE) {
+		ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, data,
+							 true, false);
+		goto out;
+	}
+	hw->phy.addr = 1;
+	if (offset > MAX_PHY_MULTI_PAGE_REG) {
+		/* Page is shifted left, PHY expects (page x 32) */
+		ret_val = e1000e_write_phy_reg_mdic(hw, BM_PHY_PAGE_SELECT,
+						    page);
+		if (ret_val)
+			goto out;
+	}
+	ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
+					   data);
+out:
+	hw->phy.ops.release(hw);
+	return ret_val;
+}
+/**
+*  e1000e_write_phy_reg_bm2 - Write BM PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to write to
+*  @data: data to write at register offset
+*
+*  Acquires semaphore, if necessary, then writes the data to PHY register
+*  at the offset.  Release any acquired semaphores before exiting.
+**/
+s32 e1000e_write_phy_reg_bm2(struct e1000_hw *hw, u32 offset, u16 data)
+{
+	s32 ret_val;
+	u16 page = (u16)(offset >> IGP_PAGE_SHIFT);
+	ret_val = hw->phy.ops.acquire(hw);
+	if (ret_val)
+		return ret_val;
+	/* Page 800 works differently than the rest so it has its own func */
+	if (page == BM_WUC_PAGE) {
+		ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, &data,
+							 false, false);
+		goto out;
+	}
+	hw->phy.addr = 1;
+	if (offset > MAX_PHY_MULTI_PAGE_REG) {
+		/* Page is shifted left, PHY expects (page x 32) */
+		ret_val = e1000e_write_phy_reg_mdic(hw, BM_PHY_PAGE_SELECT,
+						    page);
+		if (ret_val)
+			goto out;
+	}
+	ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
+					    data);
+out:
+	hw->phy.ops.release(hw);
+	return ret_val;
+}
+/**
+*  e1000_enable_phy_wakeup_reg_access_bm - enable access to BM wakeup registers
+*  @hw: pointer to the HW structure
+*  @phy_reg: pointer to store original contents of BM_WUC_ENABLE_REG
+*
+*  Assumes semaphore already acquired and phy_reg points to a valid memory
+*  address to store contents of the BM_WUC_ENABLE_REG register.
+**/
+s32 e1000_enable_phy_wakeup_reg_access_bm(struct e1000_hw *hw, u16 *phy_reg)
+{
+	s32 ret_val;
+	u16 temp;
+	/* All page select, port ctrl and wakeup registers use phy address 1 */
+	hw->phy.addr = 1;
+	/* Select Port Control Registers page */
+	ret_val = e1000_set_page_igp(hw, (BM_PORT_CTRL_PAGE << IGP_PAGE_SHIFT));
+	if (ret_val) {
+		e_dbg("Could not set Port Control page\n");
+		goto out;
+	}
+	ret_val = e1000e_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg);
+	if (ret_val) {
+		e_dbg("Could not read PHY register %d.%d\n",
+		      BM_PORT_CTRL_PAGE, BM_WUC_ENABLE_REG);
+		goto out;
+	}
+	/*
+	 * Enable both PHY wakeup mode and Wakeup register page writes.
+	 * Prevent a power state change by disabling ME and Host PHY wakeup.
+	 */
+	temp = *phy_reg;
+	temp |= BM_WUC_ENABLE_BIT;
+	temp &= ~(BM_WUC_ME_WU_BIT | BM_WUC_HOST_WU_BIT);
+	ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, temp);
+	if (ret_val) {
+		e_dbg("Could not write PHY register %d.%d\n",
+		      BM_PORT_CTRL_PAGE, BM_WUC_ENABLE_REG);
+		goto out;
+	}
+	/* Select Host Wakeup Registers page */
+	ret_val = e1000_set_page_igp(hw, (BM_WUC_PAGE << IGP_PAGE_SHIFT));
+	/* caller now able to write registers on the Wakeup registers page */
+out:
+	return ret_val;
+}
+/**
+*  e1000_disable_phy_wakeup_reg_access_bm - disable access to BM wakeup regs
+*  @hw: pointer to the HW structure
+*  @phy_reg: pointer to original contents of BM_WUC_ENABLE_REG
+*
+*  Restore BM_WUC_ENABLE_REG to its original value.
+*
+*  Assumes semaphore already acquired and *phy_reg is the contents of the
+*  BM_WUC_ENABLE_REG before register(s) on BM_WUC_PAGE were accessed by
+*  caller.
+**/
+s32 e1000_disable_phy_wakeup_reg_access_bm(struct e1000_hw *hw, u16 *phy_reg)
+{
+	s32 ret_val = 0;
+	/* Select Port Control Registers page */
+	ret_val = e1000_set_page_igp(hw, (BM_PORT_CTRL_PAGE << IGP_PAGE_SHIFT));
+	if (ret_val) {
+		e_dbg("Could not set Port Control page\n");
+		goto out;
+	}
+	/* Restore 769.17 to its original value */
+	ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, *phy_reg);
+	if (ret_val)
+		e_dbg("Could not restore PHY register %d.%d\n",
+		      BM_PORT_CTRL_PAGE, BM_WUC_ENABLE_REG);
+out:
+	return ret_val;
+}
+/**
+*  e1000_access_phy_wakeup_reg_bm - Read/write BM PHY wakeup register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read or written
+*  @data: pointer to the data to read or write
+*  @read: determines if operation is read or write
+*  @page_set: BM_WUC_PAGE already set and access enabled
+*
+*  Read the PHY register at offset and store the retrieved information in
+*  data, or write data to PHY register at offset.  Note the procedure to
+*  access the PHY wakeup registers is different than reading the other PHY
+*  registers. It works as such:
+*  1) Set 769.17.2 (page 769, register 17, bit 2) = 1
+*  2) Set page to 800 for host (801 if we were manageability)
+*  3) Write the address using the address opcode (0x11)
+*  4) Read or write the data using the data opcode (0x12)
+*  5) Restore 769.17.2 to its original value
+*
+*  Steps 1 and 2 are done by e1000_enable_phy_wakeup_reg_access_bm() and
+*  step 5 is done by e1000_disable_phy_wakeup_reg_access_bm().
+*
+*  Assumes semaphore is already acquired.  When page_set==true, assumes
+*  the PHY page is set to BM_WUC_PAGE (i.e. a function in the call stack
+*  is responsible for calls to e1000_[enable|disable]_phy_wakeup_reg_bm()).
+**/
+static s32 e1000_access_phy_wakeup_reg_bm(struct e1000_hw *hw, u32 offset,
+					  u16 *data, bool read, bool page_set)
+{
+	s32 ret_val;
+	u16 reg = BM_PHY_REG_NUM(offset);
+	u16 page = BM_PHY_REG_PAGE(offset);
+	u16 phy_reg = 0;
+	/* Gig must be disabled for MDIO accesses to Host Wakeup reg page */
+	if ((hw->mac.type == e1000_pchlan) &&
+	    (!(er32(PHY_CTRL) & E1000_PHY_CTRL_GBE_DISABLE)))
+		e_dbg("Attempting to access page %d while gig enabled.\n",
+		      page);
+	if (!page_set) {
+		/* Enable access to PHY wakeup registers */
+		ret_val = e1000_enable_phy_wakeup_reg_access_bm(hw, &phy_reg);
+		if (ret_val) {
+			e_dbg("Could not enable PHY wakeup reg access\n");
+			goto out;
+		}
+	}
+	e_dbg("Accessing PHY page %d reg 0x%x\n", page, reg);
+	/* Write the Wakeup register page offset value using opcode 0x11 */
+	ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_ADDRESS_OPCODE, reg);
+	if (ret_val) {
+		e_dbg("Could not write address opcode to page %d\n", page);
+		goto out;
+	}
+	if (read) {
+		/* Read the Wakeup register page value using opcode 0x12 */
+		ret_val = e1000e_read_phy_reg_mdic(hw, BM_WUC_DATA_OPCODE,
+		                                   data);
+	} else {
+		/* Write the Wakeup register page value using opcode 0x12 */
+		ret_val = e1000e_write_phy_reg_mdic(hw, BM_WUC_DATA_OPCODE,
+						    *data);
+	}
+	if (ret_val) {
+		e_dbg("Could not access PHY reg %d.%d\n", page, reg);
+		goto out;
+	}
+	if (!page_set)
+		ret_val = e1000_disable_phy_wakeup_reg_access_bm(hw, &phy_reg);
+out:
+	return ret_val;
+}
+/**
+* e1000_power_up_phy_copper - Restore copper link in case of PHY power down
+* @hw: pointer to the HW structure
+*
+* In the case of a PHY power down to save power, or to turn off link during a
+* driver unload, or wake on lan is not enabled, restore the link to previous
+* settings.
+**/
+void e1000_power_up_phy_copper(struct e1000_hw *hw)
+{
+	u16 mii_reg = 0;
+	/* The PHY will retain its settings across a power down/up cycle */
+	e1e_rphy(hw, PHY_CONTROL, &mii_reg);
+	mii_reg &= ~MII_CR_POWER_DOWN;
+	e1e_wphy(hw, PHY_CONTROL, mii_reg);
+}
+/**
+* e1000_power_down_phy_copper - Restore copper link in case of PHY power down
+* @hw: pointer to the HW structure
+*
+* In the case of a PHY power down to save power, or to turn off link during a
+* driver unload, or wake on lan is not enabled, restore the link to previous
+* settings.
+**/
+void e1000_power_down_phy_copper(struct e1000_hw *hw)
+{
+	u16 mii_reg = 0;
+	/* The PHY will retain its settings across a power down/up cycle */
+	e1e_rphy(hw, PHY_CONTROL, &mii_reg);
+	mii_reg |= MII_CR_POWER_DOWN;
+	e1e_wphy(hw, PHY_CONTROL, mii_reg);
+	usleep_range(1000, 2000);
+}
+/**
+*  e1000e_commit_phy - Soft PHY reset
+*  @hw: pointer to the HW structure
+*
+*  Performs a soft PHY reset on those that apply. This is a function pointer
+*  entry point called by drivers.
+**/
+s32 e1000e_commit_phy(struct e1000_hw *hw)
+{
+	if (hw->phy.ops.commit)
+		return hw->phy.ops.commit(hw);
+	return 0;
+}
+/**
+*  e1000_set_d0_lplu_state - Sets low power link up state for D0
+*  @hw: pointer to the HW structure
+*  @active: boolean used to enable/disable lplu
+*
+*  Success returns 0, Failure returns 1
+*
+*  The low power link up (lplu) state is set to the power management level D0
+*  and SmartSpeed is disabled when active is true, else clear lplu for D0
+*  and enable Smartspeed.  LPLU and Smartspeed are mutually exclusive.  LPLU
+*  is used during Dx states where the power conservation is most important.
+*  During driver activity, SmartSpeed should be enabled so performance is
+*  maintained.  This is a function pointer entry point called by drivers.
+**/
+static s32 e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active)
+{
+	if (hw->phy.ops.set_d0_lplu_state)
+		return hw->phy.ops.set_d0_lplu_state(hw, active);
+	return 0;
+}
+/**
+*  __e1000_read_phy_reg_hv -  Read HV PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read
+*  @data: pointer to the read data
+*  @locked: semaphore has already been acquired or not
+*
+*  Acquires semaphore, if necessary, then reads the PHY register at offset
+*  and stores the retrieved information in data.  Release any acquired
+*  semaphore before exiting.
+**/
+static s32 __e1000_read_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 *data,
+				   bool locked, bool page_set)
+{
+	s32 ret_val;
+	u16 page = BM_PHY_REG_PAGE(offset);
+	u16 reg = BM_PHY_REG_NUM(offset);
+	u32 phy_addr = hw->phy.addr = e1000_get_phy_addr_for_hv_page(page);
+	if (!locked) {
+		ret_val = hw->phy.ops.acquire(hw);
+		if (ret_val)
+			return ret_val;
+	}
+	/* Page 800 works differently than the rest so it has its own func */
+	if (page == BM_WUC_PAGE) {
+		ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, data,
+							 true, page_set);
+		goto out;
+	}
+	if (page > 0 && page < HV_INTC_FC_PAGE_START) {
+		ret_val = e1000_access_phy_debug_regs_hv(hw, offset,
+		                                         data, true);
+		goto out;
+	}
+	if (!page_set) {
+		if (page == HV_INTC_FC_PAGE_START)
+			page = 0;
+		if (reg > MAX_PHY_MULTI_PAGE_REG) {
+			/* Page is shifted left, PHY expects (page x 32) */
+			ret_val = e1000_set_page_igp(hw,
+						     (page << IGP_PAGE_SHIFT));
+			hw->phy.addr = phy_addr;
+			if (ret_val)
+				goto out;
+		}
+	}
+	e_dbg("reading PHY page %d (or 0x%x shifted) reg 0x%x\n", page,
+	      page << IGP_PAGE_SHIFT, reg);
+	ret_val = e1000e_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & reg,
+	                                  data);
+out:
+	if (!locked)
+		hw->phy.ops.release(hw);
+	return ret_val;
+}
+/**
+*  e1000_read_phy_reg_hv -  Read HV PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read
+*  @data: pointer to the read data
+*
+*  Acquires semaphore then reads the PHY register at offset and stores
+*  the retrieved information in data.  Release the acquired semaphore
+*  before exiting.
+**/
+s32 e1000_read_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 *data)
+{
+	return __e1000_read_phy_reg_hv(hw, offset, data, false, false);
+}
+/**
+*  e1000_read_phy_reg_hv_locked -  Read HV PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read
+*  @data: pointer to the read data
+*
+*  Reads the PHY register at offset and stores the retrieved information
+*  in data.  Assumes semaphore already acquired.
+**/
+s32 e1000_read_phy_reg_hv_locked(struct e1000_hw *hw, u32 offset, u16 *data)
+{
+	return __e1000_read_phy_reg_hv(hw, offset, data, true, false);
+}
+/**
+*  e1000_read_phy_reg_page_hv - Read HV PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to write to
+*  @data: data to write at register offset
+*
+*  Reads the PHY register at offset and stores the retrieved information
+*  in data.  Assumes semaphore already acquired and page already set.
+**/
+s32 e1000_read_phy_reg_page_hv(struct e1000_hw *hw, u32 offset, u16 *data)
+{
+	return __e1000_read_phy_reg_hv(hw, offset, data, true, true);
+}
+/**
+*  __e1000_write_phy_reg_hv - Write HV PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to write to
+*  @data: data to write at register offset
+*  @locked: semaphore has already been acquired or not
+*
+*  Acquires semaphore, if necessary, then writes the data to PHY register
+*  at the offset.  Release any acquired semaphores before exiting.
+**/
+static s32 __e1000_write_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 data,
+				    bool locked, bool page_set)
+{
+	s32 ret_val;
+	u16 page = BM_PHY_REG_PAGE(offset);
+	u16 reg = BM_PHY_REG_NUM(offset);
+	u32 phy_addr = hw->phy.addr = e1000_get_phy_addr_for_hv_page(page);
+	if (!locked) {
+		ret_val = hw->phy.ops.acquire(hw);
+		if (ret_val)
+			return ret_val;
+	}
+	/* Page 800 works differently than the rest so it has its own func */
+	if (page == BM_WUC_PAGE) {
+		ret_val = e1000_access_phy_wakeup_reg_bm(hw, offset, &data,
+							 false, page_set);
+		goto out;
+	}
+	if (page > 0 && page < HV_INTC_FC_PAGE_START) {
+		ret_val = e1000_access_phy_debug_regs_hv(hw, offset,
+		                                         &data, false);
+		goto out;
+	}
+	if (!page_set) {
+		if (page == HV_INTC_FC_PAGE_START)
+			page = 0;
+		/*
+		 * Workaround MDIO accesses being disabled after entering IEEE
+		 * Power Down (when bit 11 of the PHY Control register is set)
+		 */
+		if ((hw->phy.type == e1000_phy_82578) &&
+		    (hw->phy.revision >= 1) &&
+		    (hw->phy.addr == 2) &&
+		    ((MAX_PHY_REG_ADDRESS & reg) == 0) && (data & (1 << 11))) {
+			u16 data2 = 0x7EFF;
+			ret_val = e1000_access_phy_debug_regs_hv(hw,
+								 (1 << 6) | 0x3,
+								 &data2, false);
+			if (ret_val)
+				goto out;
+		}
+		if (reg > MAX_PHY_MULTI_PAGE_REG) {
+			/* Page is shifted left, PHY expects (page x 32) */
+			ret_val = e1000_set_page_igp(hw,
+						     (page << IGP_PAGE_SHIFT));
+			hw->phy.addr = phy_addr;
+			if (ret_val)
+				goto out;
+		}
+	}
+	e_dbg("writing PHY page %d (or 0x%x shifted) reg 0x%x\n", page,
+	      page << IGP_PAGE_SHIFT, reg);
+	ret_val = e1000e_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & reg,
+	                                  data);
+out:
+	if (!locked)
+		hw->phy.ops.release(hw);
+	return ret_val;
+}
+/**
+*  e1000_write_phy_reg_hv - Write HV PHY register
+*  @hw: pointer to the HW structure
+*  @offset: register offset to write to
+*  @data: data to write at register offset
+*
+*  Acquires semaphore then writes the data to PHY register at the offset.
+*  Release the acquired semaphores before exiting.
+**/
+s32 e1000_write_phy_reg_hv(struct e1000_hw *hw, u32 offset, u16 data)
+{
+	return __e1000_write_phy_reg_hv(hw, offset, data, false, false);
+}
+/**
+*  e1000_write_phy_reg_hv_locked - Write HV PHY register
+*  @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.  Assumes semaphore
+*  already acquired.
+**/
+s32 e1000_write_phy_reg_hv_locked(struct e1000_hw *hw, u32 offset, u16 data)
+{
+	return __e1000_write_phy_reg_hv(hw, offset, data, true, false);
+}
+/**
+*  e1000_write_phy_reg_page_hv - Write HV PHY register
+*  @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.  Assumes semaphore
+*  already acquired and page already set.
+**/
+s32 e1000_write_phy_reg_page_hv(struct e1000_hw *hw, u32 offset, u16 data)
+{
+	return __e1000_write_phy_reg_hv(hw, offset, data, true, true);
+}
+/**
+*  e1000_get_phy_addr_for_hv_page - Get PHY address based on page
+*  @page: page to be accessed
+**/
+static u32 e1000_get_phy_addr_for_hv_page(u32 page)
+{
+	u32 phy_addr = 2;
+	if (page >= HV_INTC_FC_PAGE_START)
+		phy_addr = 1;
+	return phy_addr;
+}
+/**
+*  e1000_access_phy_debug_regs_hv - Read HV PHY vendor specific high registers
+*  @hw: pointer to the HW structure
+*  @offset: register offset to be read or written
+*  @data: pointer to the data to be read or written
+*  @read: determines if operation is read or write
+*
+*  Reads the PHY register at offset and stores the retreived information
+*  in data.  Assumes semaphore already acquired.  Note that the procedure
+*  to access these regs uses the address port and data port to read/write.
+*  These accesses done with PHY address 2 and without using pages.
+**/
+static s32 e1000_access_phy_debug_regs_hv(struct e1000_hw *hw, u32 offset,
+u16 *data, bool read)
+{
+	s32 ret_val;
+	u32 addr_reg = 0;
+	u32 data_reg = 0;
+	/* This takes care of the difference with desktop vs mobile phy */
+	addr_reg = (hw->phy.type == e1000_phy_82578) ?
+	           I82578_ADDR_REG : I82577_ADDR_REG;
+	data_reg = addr_reg + 1;
+	/* All operations in this function are phy address 2 */
+	hw->phy.addr = 2;
+	/* masking with 0x3F to remove the page from offset */
+	ret_val = e1000e_write_phy_reg_mdic(hw, addr_reg, (u16)offset & 0x3F);
+	if (ret_val) {
+		e_dbg("Could not write the Address Offset port register\n");
+		goto out;
+	}
+	/* Read or write the data value next */
+	if (read)
+		ret_val = e1000e_read_phy_reg_mdic(hw, data_reg, data);
+	else
+		ret_val = e1000e_write_phy_reg_mdic(hw, data_reg, *data);
+	if (ret_val) {
+		e_dbg("Could not access the Data port register\n");
+		goto out;
+	}
+out:
+	return ret_val;
+}
+/**
+*  e1000_link_stall_workaround_hv - Si workaround
+*  @hw: pointer to the HW structure
+*
+*  This function works around a Si bug where the link partner can get
+*  a link up indication before the PHY does.  If small packets are sent
+*  by the link partner they can be placed in the packet buffer without
+*  being properly accounted for by the PHY and will stall preventing
+*  further packets from being received.  The workaround is to clear the
+*  packet buffer after the PHY detects link up.
+**/
+s32 e1000_link_stall_workaround_hv(struct e1000_hw *hw)
+{
+	s32 ret_val = 0;
+	u16 data;
+	if (hw->phy.type != e1000_phy_82578)
+		goto out;
+	/* Do not apply workaround if in PHY loopback bit 14 set */
+	e1e_rphy(hw, PHY_CONTROL, &data);
+	if (data & PHY_CONTROL_LB)
+		goto out;
+	/* check if link is up and at 1Gbps */
+	ret_val = e1e_rphy(hw, BM_CS_STATUS, &data);
+	if (ret_val)
+		goto out;
+	data &= BM_CS_STATUS_LINK_UP |
+	        BM_CS_STATUS_RESOLVED |
+	        BM_CS_STATUS_SPEED_MASK;
+	if (data != (BM_CS_STATUS_LINK_UP |
+	             BM_CS_STATUS_RESOLVED |
+	             BM_CS_STATUS_SPEED_1000))
+		goto out;
+	mdelay(200);
+	/* flush the packets in the fifo buffer */
+	ret_val = e1e_wphy(hw, HV_MUX_DATA_CTRL, HV_MUX_DATA_CTRL_GEN_TO_MAC |
+			   HV_MUX_DATA_CTRL_FORCE_SPEED);
+	if (ret_val)
+		goto out;
+	ret_val = e1e_wphy(hw, HV_MUX_DATA_CTRL, HV_MUX_DATA_CTRL_GEN_TO_MAC);
+out:
+	return ret_val;
+}
+/**
+*  e1000_check_polarity_82577 - Checks the polarity.
+*  @hw: pointer to the HW structure
+*
+*  Success returns 0, Failure returns -E1000_ERR_PHY (-2)
+*
+*  Polarity is determined based on the PHY specific status register.
+**/
+s32 e1000_check_polarity_82577(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 data;
+	ret_val = e1e_rphy(hw, I82577_PHY_STATUS_2, &data);
+	if (!ret_val)
+		phy->cable_polarity = (data & I82577_PHY_STATUS2_REV_POLARITY)
+		                      ? e1000_rev_polarity_reversed
+		                      : e1000_rev_polarity_normal;
+	return ret_val;
+}
+/**
+*  e1000_phy_force_speed_duplex_82577 - Force speed/duplex for I82577 PHY
+*  @hw: pointer to the HW structure
+*
+*  Calls the PHY setup function to force speed and duplex.
+**/
+s32 e1000_phy_force_speed_duplex_82577(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 phy_data;
+	bool link;
+	ret_val = e1e_rphy(hw, PHY_CONTROL, &phy_data);
+	if (ret_val)
+		goto out;
+	e1000e_phy_force_speed_duplex_setup(hw, &phy_data);
+	ret_val = e1e_wphy(hw, PHY_CONTROL, phy_data);
+	if (ret_val)
+		goto out;
+	udelay(1);
+	if (phy->autoneg_wait_to_complete) {
+		e_dbg("Waiting for forced speed/duplex link on 82577 phy\n");
+		ret_val = e1000e_phy_has_link_generic(hw,
+		                                     PHY_FORCE_LIMIT,
+		                                     100000,
+		                                     &link);
+		if (ret_val)
+			goto out;
+		if (!link)
+			e_dbg("Link taking longer than expected.\n");
+		/* Try once more */
+		ret_val = e1000e_phy_has_link_generic(hw,
+		                                     PHY_FORCE_LIMIT,
+		                                     100000,
+		                                     &link);
+		if (ret_val)
+			goto out;
+	}
+out:
+	return ret_val;
+}
+/**
+*  e1000_get_phy_info_82577 - Retrieve I82577 PHY information
+*  @hw: pointer to the HW structure
+*
+*  Read PHY status to determine if link is up.  If link is up, then
+*  set/determine 10base-T extended distance and polarity correction.  Read
+*  PHY port status to determine MDI/MDIx and speed.  Based on the speed,
+*  determine on the cable length, local and remote receiver.
+**/
+s32 e1000_get_phy_info_82577(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 data;
+	bool link;
+	ret_val = e1000e_phy_has_link_generic(hw, 1, 0, &link);
+	if (ret_val)
+		goto out;
+	if (!link) {
+		e_dbg("Phy info is only valid if link is up\n");
+		ret_val = -E1000_ERR_CONFIG;
+		goto out;
+	}
+	phy->polarity_correction = true;
+	ret_val = e1000_check_polarity_82577(hw);
+	if (ret_val)
+		goto out;
+	ret_val = e1e_rphy(hw, I82577_PHY_STATUS_2, &data);
+	if (ret_val)
+		goto out;
+	phy->is_mdix = (data & I82577_PHY_STATUS2_MDIX) ? true : false;
+	if ((data & I82577_PHY_STATUS2_SPEED_MASK) ==
+	    I82577_PHY_STATUS2_SPEED_1000MBPS) {
+		ret_val = hw->phy.ops.get_cable_length(hw);
+		if (ret_val)
+			goto out;
+		ret_val = e1e_rphy(hw, PHY_1000T_STATUS, &data);
+		if (ret_val)
+			goto out;
+		phy->local_rx = (data & SR_1000T_LOCAL_RX_STATUS)
+		                ? e1000_1000t_rx_status_ok
+		                : e1000_1000t_rx_status_not_ok;
+		phy->remote_rx = (data & SR_1000T_REMOTE_RX_STATUS)
+		                 ? e1000_1000t_rx_status_ok
+		                 : e1000_1000t_rx_status_not_ok;
+	} else {
+		phy->cable_length = E1000_CABLE_LENGTH_UNDEFINED;
+		phy->local_rx = e1000_1000t_rx_status_undefined;
+		phy->remote_rx = e1000_1000t_rx_status_undefined;
+	}
+out:
+	return ret_val;
+}
+/**
+*  e1000_get_cable_length_82577 - Determine cable length for 82577 PHY
+*  @hw: pointer to the HW structure
+*
+* Reads the diagnostic status register and verifies result is valid before
+* placing it in the phy_cable_length field.
+**/
+s32 e1000_get_cable_length_82577(struct e1000_hw *hw)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val;
+	u16 phy_data, length;
+	ret_val = e1e_rphy(hw, I82577_PHY_DIAG_STATUS, &phy_data);
+	if (ret_val)
+		goto out;
+	length = (phy_data & I82577_DSTATUS_CABLE_LENGTH) >>
+	         I82577_DSTATUS_CABLE_LENGTH_SHIFT;
+	if (length == E1000_CABLE_LENGTH_UNDEFINED)
+		ret_val = -E1000_ERR_PHY;
+	phy->cable_length = length;
+out:
+	return ret_val;
+}

branch	stable-1.5
changeset 2407	35223d2e6e72