e1000.c

	if ((E1000_READ_REG(hw, CTRL) & E1000_CTRL_SWDPIN1) == signal) {
		DEBUGOUT("Looking for Link\n");
		for (i = 0; i < (LINK_UP_TIMEOUT / 10); i++) {
			mdelay(10);
			status = E1000_READ_REG(hw, STATUS);
			if (status & E1000_STATUS_LU)
				break;
		}
		if (i == (LINK_UP_TIMEOUT / 10)) {
			/* AutoNeg failed to achieve a link, so we'll call
			 * e1000_check_for_link. This routine will force the link up if we
			 * detect a signal. This will allow us to communicate with
			 * non-autonegotiating link partners.
			 */
			DEBUGOUT("Never got a valid link from auto-neg!!!\n");
			hw->autoneg_failed = 1;
			ret_val = e1000_check_for_link(nic);
			if (ret_val < 0) {
				DEBUGOUT("Error while checking for link\n");
				return ret_val;
			}
			hw->autoneg_failed = 0;
		} else {
			hw->autoneg_failed = 0;
			DEBUGOUT("Valid Link Found\n");
		}
	} else {
		DEBUGOUT("No Signal Detected\n");
		return -E1000_ERR_NOLINK;
	}
	return 0;
}

/******************************************************************************
* Make sure we have a valid PHY and change PHY mode before link setup.
*
* hw - Struct containing variables accessed by shared code
******************************************************************************/
static int32_t
e1000_copper_link_preconfig(struct e1000_hw *hw)
{
	uint32_t ctrl;
	int32_t ret_val;
	uint16_t phy_data;

	DEBUGFUNC();

	ctrl = E1000_READ_REG(hw, CTRL);
	/* With 82543, we need to force speed and duplex on the MAC equal to what
	 * the PHY speed and duplex configuration is. In addition, we need to
	 * perform a hardware reset on the PHY to take it out of reset.
	 */
	if (hw->mac_type > e1000_82543) {
		ctrl |= E1000_CTRL_SLU;
		ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
		E1000_WRITE_REG(hw, CTRL, ctrl);
	} else {
		ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX
				| E1000_CTRL_SLU);
		E1000_WRITE_REG(hw, CTRL, ctrl);
		ret_val = e1000_phy_hw_reset(hw);
		if (ret_val)
			return ret_val;
	}

	/* Make sure we have a valid PHY */
	ret_val = e1000_detect_gig_phy(hw);
	if (ret_val) {
		DEBUGOUT("Error, did not detect valid phy.\n");
		return ret_val;
	}
	DEBUGOUT("Phy ID = %x \n", hw->phy_id);

	/* Set PHY to class A mode (if necessary) */
	ret_val = e1000_set_phy_mode(hw);
	if (ret_val)
		return ret_val;
	if ((hw->mac_type == e1000_82545_rev_3) ||
		(hw->mac_type == e1000_82546_rev_3)) {
		ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL,
				&phy_data);
		phy_data |= 0x00000008;
		ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL,
				phy_data);
	}

	if (hw->mac_type <= e1000_82543 ||
		hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 ||
		hw->mac_type == e1000_82541_rev_2
		|| hw->mac_type == e1000_82547_rev_2)
			hw->phy_reset_disable = FALSE;

	return E1000_SUCCESS;
}

/*****************************************************************************
 *
 * This function sets the lplu state according to the active flag.  When
 * activating lplu this function also disables smart speed and vise versa.
 * lplu will not be activated unless the device autonegotiation advertisment
 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
 * hw: Struct containing variables accessed by shared code
 * active - true to enable lplu false to disable lplu.
 *
 * returns: - E1000_ERR_PHY if fail to read/write the PHY
 *            E1000_SUCCESS at any other case.
 *
 ****************************************************************************/

static int32_t
e1000_set_d3_lplu_state(struct e1000_hw *hw, boolean_t active)
{
	uint32_t phy_ctrl = 0;
	int32_t ret_val;
	uint16_t phy_data;
	DEBUGFUNC();

	if (hw->phy_type != e1000_phy_igp && hw->phy_type != e1000_phy_igp_2
	    && hw->phy_type != e1000_phy_igp_3)
		return E1000_SUCCESS;

	/* During driver activity LPLU should not be used or it will attain link
	 * from the lowest speeds starting from 10Mbps. The capability is used
	 * for Dx transitions and states */
	if (hw->mac_type == e1000_82541_rev_2
			|| hw->mac_type == e1000_82547_rev_2) {
		ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO,
				&phy_data);
		if (ret_val)
			return ret_val;
	} else if (hw->mac_type == e1000_ich8lan) {
		/* MAC writes into PHY register based on the state transition
		 * and start auto-negotiation. SW driver can overwrite the
		 * settings in CSR PHY power control E1000_PHY_CTRL register. */
		phy_ctrl = E1000_READ_REG(hw, PHY_CTRL);
	} else {
		ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
				&phy_data);
		if (ret_val)
			return ret_val;
	}

	if (!active) {
		if (hw->mac_type == e1000_82541_rev_2 ||
			hw->mac_type == e1000_82547_rev_2) {
			phy_data &= ~IGP01E1000_GMII_FLEX_SPD;
			ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
					phy_data);
			if (ret_val)
				return ret_val;
		} else {
			if (hw->mac_type == e1000_ich8lan) {
				phy_ctrl &= ~E1000_PHY_CTRL_NOND0A_LPLU;
				E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
			} else {
				phy_data &= ~IGP02E1000_PM_D3_LPLU;
				ret_val = e1000_write_phy_reg(hw,
					IGP02E1000_PHY_POWER_MGMT, phy_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 (hw->smart_speed == e1000_smart_speed_on) {
			ret_val = e1000_read_phy_reg(hw,
					IGP01E1000_PHY_PORT_CONFIG, &phy_data);
			if (ret_val)
				return ret_val;

			phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
			ret_val = e1000_write_phy_reg(hw,
					IGP01E1000_PHY_PORT_CONFIG, phy_data);
			if (ret_val)
				return ret_val;
		} else if (hw->smart_speed == e1000_smart_speed_off) {
			ret_val = e1000_read_phy_reg(hw,
					IGP01E1000_PHY_PORT_CONFIG, &phy_data);
			if (ret_val)
				return ret_val;

			phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
			ret_val = e1000_write_phy_reg(hw,
					IGP01E1000_PHY_PORT_CONFIG, phy_data);
			if (ret_val)
				return ret_val;
		}

	} else if ((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT)
		|| (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL) ||
		(hw->autoneg_advertised == AUTONEG_ADVERTISE_10_100_ALL)) {

		if (hw->mac_type == e1000_82541_rev_2 ||
		    hw->mac_type == e1000_82547_rev_2) {
			phy_data |= IGP01E1000_GMII_FLEX_SPD;
			ret_val = e1000_write_phy_reg(hw,
					IGP01E1000_GMII_FIFO, phy_data);
			if (ret_val)
				return ret_val;
		} else {
			if (hw->mac_type == e1000_ich8lan) {
				phy_ctrl |= E1000_PHY_CTRL_NOND0A_LPLU;
				E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
			} else {
				phy_data |= IGP02E1000_PM_D3_LPLU;
				ret_val = e1000_write_phy_reg(hw,
					IGP02E1000_PHY_POWER_MGMT, phy_data);
				if (ret_val)
					return ret_val;
			}
		}

		/* When LPLU is enabled we should disable SmartSpeed */
		ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
				&phy_data);
		if (ret_val)
			return ret_val;

		phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
		ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
				phy_data);
		if (ret_val)
			return ret_val;
	}
	return E1000_SUCCESS;
}

/*****************************************************************************
 *
 * This function sets the lplu d0 state according to the active flag.  When
 * activating lplu this function also disables smart speed and vise versa.
 * lplu will not be activated unless the device autonegotiation advertisment
 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
 * hw: Struct containing variables accessed by shared code
 * active - true to enable lplu false to disable lplu.
 *
 * returns: - E1000_ERR_PHY if fail to read/write the PHY
 *            E1000_SUCCESS at any other case.
 *
 ****************************************************************************/

static int32_t
e1000_set_d0_lplu_state(struct e1000_hw *hw, boolean_t active)
{
	uint32_t phy_ctrl = 0;
	int32_t ret_val;
	uint16_t phy_data;
	DEBUGFUNC();

	if (hw->mac_type <= e1000_82547_rev_2)
		return E1000_SUCCESS;

	if (hw->mac_type == e1000_ich8lan) {
		phy_ctrl = E1000_READ_REG(hw, PHY_CTRL);
	} else {
		ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
				&phy_data);
		if (ret_val)
			return ret_val;
	}

	if (!active) {
		if (hw->mac_type == e1000_ich8lan) {
			phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU;
			E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
		} else {
			phy_data &= ~IGP02E1000_PM_D0_LPLU;
			ret_val = e1000_write_phy_reg(hw,
					IGP02E1000_PHY_POWER_MGMT, phy_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 (hw->smart_speed == e1000_smart_speed_on) {
			ret_val = e1000_read_phy_reg(hw,
					IGP01E1000_PHY_PORT_CONFIG, &phy_data);
			if (ret_val)
				return ret_val;

			phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
			ret_val = e1000_write_phy_reg(hw,
					IGP01E1000_PHY_PORT_CONFIG, phy_data);
			if (ret_val)
				return ret_val;
		} else if (hw->smart_speed == e1000_smart_speed_off) {
			ret_val = e1000_read_phy_reg(hw,
					IGP01E1000_PHY_PORT_CONFIG, &phy_data);
			if (ret_val)
				return ret_val;

			phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
			ret_val = e1000_write_phy_reg(hw,
					IGP01E1000_PHY_PORT_CONFIG, phy_data);
			if (ret_val)
				return ret_val;
		}


	} else {

		if (hw->mac_type == e1000_ich8lan) {
			phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU;
			E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
		} else {
			phy_data |= IGP02E1000_PM_D0_LPLU;
			ret_val = e1000_write_phy_reg(hw,
					IGP02E1000_PHY_POWER_MGMT, phy_data);
			if (ret_val)
				return ret_val;
		}

		/* When LPLU is enabled we should disable SmartSpeed */
		ret_val = e1000_read_phy_reg(hw,
				IGP01E1000_PHY_PORT_CONFIG, &phy_data);
		if (ret_val)
			return ret_val;

		phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
		ret_val = e1000_write_phy_reg(hw,
				IGP01E1000_PHY_PORT_CONFIG, phy_data);
		if (ret_val)
			return ret_val;

	}
	return E1000_SUCCESS;
}

/********************************************************************
* Copper link setup for e1000_phy_igp series.
*
* hw - Struct containing variables accessed by shared code
*********************************************************************/
static int32_t
e1000_copper_link_igp_setup(struct e1000_hw *hw)
{
	uint32_t led_ctrl;
	int32_t ret_val;
	uint16_t phy_data;

	DEBUGFUNC();

	if (hw->phy_reset_disable)
		return E1000_SUCCESS;

	ret_val = e1000_phy_reset(hw);
	if (ret_val) {
		DEBUGOUT("Error Resetting the PHY\n");
		return ret_val;
	}

	/* Wait 15ms for MAC to configure PHY from eeprom settings */
	mdelay(15);
	if (hw->mac_type != e1000_ich8lan) {
		/* Configure activity LED after PHY reset */
		led_ctrl = E1000_READ_REG(hw, LEDCTL);
		led_ctrl &= IGP_ACTIVITY_LED_MASK;
		led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
		E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
	}

	/* The NVM settings will configure LPLU in D3 for IGP2 and IGP3 PHYs */
	if (hw->phy_type == e1000_phy_igp) {
		/* disable lplu d3 during driver init */
		ret_val = e1000_set_d3_lplu_state(hw, FALSE);
		if (ret_val) {
			DEBUGOUT("Error Disabling LPLU D3\n");
			return ret_val;
		}
	}

	/* disable lplu d0 during driver init */
	ret_val = e1000_set_d0_lplu_state(hw, FALSE);
	if (ret_val) {
		DEBUGOUT("Error Disabling LPLU D0\n");
		return ret_val;
	}
	/* Configure mdi-mdix settings */
	ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
	if (ret_val)
		return ret_val;

	if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
		hw->dsp_config_state = e1000_dsp_config_disabled;
		/* Force MDI for earlier revs of the IGP PHY */
		phy_data &= ~(IGP01E1000_PSCR_AUTO_MDIX
				| IGP01E1000_PSCR_FORCE_MDI_MDIX);
		hw->mdix = 1;

	} else {
		hw->dsp_config_state = e1000_dsp_config_enabled;
		phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;

		switch (hw->mdix) {
		case 1:
			phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
			break;
		case 2:
			phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
			break;
		case 0:
		default:
			phy_data |= IGP01E1000_PSCR_AUTO_MDIX;
			break;
		}
	}
	ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
	if (ret_val)
		return ret_val;

	/* set auto-master slave resolution settings */
	if (hw->autoneg) {
		e1000_ms_type phy_ms_setting = hw->master_slave;

		if (hw->ffe_config_state == e1000_ffe_config_active)
			hw->ffe_config_state = e1000_ffe_config_enabled;

		if (hw->dsp_config_state == e1000_dsp_config_activated)
			hw->dsp_config_state = e1000_dsp_config_enabled;

		/* when autonegotiation advertisment is only 1000Mbps then we
		  * should disable SmartSpeed and enable Auto MasterSlave
		  * resolution as hardware default. */
		if (hw->autoneg_advertised == ADVERTISE_1000_FULL) {
			/* Disable SmartSpeed */
			ret_val = e1000_read_phy_reg(hw,
					IGP01E1000_PHY_PORT_CONFIG, &phy_data);
			if (ret_val)
				return ret_val;
			phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
			ret_val = e1000_write_phy_reg(hw,
					IGP01E1000_PHY_PORT_CONFIG, phy_data);
			if (ret_val)
				return ret_val;
			/* Set auto Master/Slave resolution process */
			ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL,
					&phy_data);
			if (ret_val)
				return ret_val;
			phy_data &= ~CR_1000T_MS_ENABLE;
			ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL,
					phy_data);
			if (ret_val)
				return ret_val;
		}

		ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
		if (ret_val)
			return ret_val;

		/* load defaults for future use */
		hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ?
				((phy_data & CR_1000T_MS_VALUE) ?
				e1000_ms_force_master :
				e1000_ms_force_slave) :
				e1000_ms_auto;

		switch (phy_ms_setting) {
		case e1000_ms_force_master:
			phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
			break;
		case e1000_ms_force_slave:
			phy_data |= CR_1000T_MS_ENABLE;
			phy_data &= ~(CR_1000T_MS_VALUE);
			break;
		case e1000_ms_auto:
			phy_data &= ~CR_1000T_MS_ENABLE;
		default:
			break;
		}
		ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
		if (ret_val)
			return ret_val;
	}

	return E1000_SUCCESS;
}

/*****************************************************************************
 * This function checks the mode of the firmware.
 *
 * returns  - TRUE when the mode is IAMT or FALSE.
 ****************************************************************************/
boolean_t
e1000_check_mng_mode(struct e1000_hw *hw)
{
	uint32_t fwsm;
	DEBUGFUNC();

	fwsm = E1000_READ_REG(hw, FWSM);

	if (hw->mac_type == e1000_ich8lan) {
		if ((fwsm & E1000_FWSM_MODE_MASK) ==
		    (E1000_MNG_ICH_IAMT_MODE << E1000_FWSM_MODE_SHIFT))
			return TRUE;
	} else if ((fwsm & E1000_FWSM_MODE_MASK) ==
		       (E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT))
			return TRUE;

	return FALSE;
}

static int32_t
e1000_write_kmrn_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t data)
{
	uint16_t swfw = E1000_SWFW_PHY0_SM;
	uint32_t reg_val;
	DEBUGFUNC();

	if (e1000_is_second_port(hw))
		swfw = E1000_SWFW_PHY1_SM;

	if (e1000_swfw_sync_acquire(hw, swfw))
		return -E1000_ERR_SWFW_SYNC;

	reg_val = ((reg_addr << E1000_KUMCTRLSTA_OFFSET_SHIFT)
			& E1000_KUMCTRLSTA_OFFSET) | data;
	E1000_WRITE_REG(hw, KUMCTRLSTA, reg_val);
	udelay(2);

	return E1000_SUCCESS;
}

static int32_t
e1000_read_kmrn_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t *data)
{
	uint16_t swfw = E1000_SWFW_PHY0_SM;
	uint32_t reg_val;
	DEBUGFUNC();

	if (e1000_is_second_port(hw))
		swfw = E1000_SWFW_PHY1_SM;

	if (e1000_swfw_sync_acquire(hw, swfw))
		return -E1000_ERR_SWFW_SYNC;

	/* Write register address */
	reg_val = ((reg_addr << E1000_KUMCTRLSTA_OFFSET_SHIFT) &
			E1000_KUMCTRLSTA_OFFSET) | E1000_KUMCTRLSTA_REN;
	E1000_WRITE_REG(hw, KUMCTRLSTA, reg_val);
	udelay(2);

	/* Read the data returned */
	reg_val = E1000_READ_REG(hw, KUMCTRLSTA);
	*data = (uint16_t)reg_val;

	return E1000_SUCCESS;
}

/********************************************************************
* Copper link setup for e1000_phy_gg82563 series.
*
* hw - Struct containing variables accessed by shared code
*********************************************************************/
static int32_t
e1000_copper_link_ggp_setup(struct e1000_hw *hw)
{
	int32_t ret_val;
	uint16_t phy_data;
	uint32_t reg_data;

	DEBUGFUNC();

	if (!hw->phy_reset_disable) {
		/* Enable CRS on TX for half-duplex operation. */
		ret_val = e1000_read_phy_reg(hw,
				GG82563_PHY_MAC_SPEC_CTRL, &phy_data);
		if (ret_val)
			return ret_val;

		phy_data |= GG82563_MSCR_ASSERT_CRS_ON_TX;
		/* Use 25MHz for both link down and 1000BASE-T for Tx clock */
		phy_data |= GG82563_MSCR_TX_CLK_1000MBPS_25MHZ;

		ret_val = e1000_write_phy_reg(hw,
				GG82563_PHY_MAC_SPEC_CTRL, phy_data);
		if (ret_val)
			return ret_val;

		/* 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)
		 */
		ret_val = e1000_read_phy_reg(hw,
				GG82563_PHY_SPEC_CTRL, &phy_data);
		if (ret_val)
			return ret_val;

		phy_data &= ~GG82563_PSCR_CROSSOVER_MODE_MASK;

		switch (hw->mdix) {
		case 1:
			phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDI;
			break;
		case 2:
			phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDIX;
			break;
		case 0:
		default:
			phy_data |= GG82563_PSCR_CROSSOVER_MODE_AUTO;
			break;
		}

		/* Options:
		 *   disable_polarity_correction = 0 (default)
		 *       Automatic Correction for Reversed Cable Polarity
		 *   0 - Disabled
		 *   1 - Enabled
		 */
		phy_data &= ~GG82563_PSCR_POLARITY_REVERSAL_DISABLE;
		ret_val = e1000_write_phy_reg(hw,
				GG82563_PHY_SPEC_CTRL, phy_data);

		if (ret_val)
			return ret_val;

		/* SW Reset the PHY so all changes take effect */
		ret_val = e1000_phy_reset(hw);
		if (ret_val) {
			DEBUGOUT("Error Resetting the PHY\n");
			return ret_val;
		}
	} /* phy_reset_disable */

	if (hw->mac_type == e1000_80003es2lan) {
		/* Bypass RX and TX FIFO's */
		ret_val = e1000_write_kmrn_reg(hw,
				E1000_KUMCTRLSTA_OFFSET_FIFO_CTRL,
				E1000_KUMCTRLSTA_FIFO_CTRL_RX_BYPASS
				| E1000_KUMCTRLSTA_FIFO_CTRL_TX_BYPASS);
		if (ret_val)
			return ret_val;

		ret_val = e1000_read_phy_reg(hw,
				GG82563_PHY_SPEC_CTRL_2, &phy_data);
		if (ret_val)
			return ret_val;

		phy_data &= ~GG82563_PSCR2_REVERSE_AUTO_NEG;
		ret_val = e1000_write_phy_reg(hw,
				GG82563_PHY_SPEC_CTRL_2, phy_data);

		if (ret_val)
			return ret_val;

		reg_data = E1000_READ_REG(hw, CTRL_EXT);
		reg_data &= ~(E1000_CTRL_EXT_LINK_MODE_MASK);
		E1000_WRITE_REG(hw, CTRL_EXT, reg_data);

		ret_val = e1000_read_phy_reg(hw,
				GG82563_PHY_PWR_MGMT_CTRL, &phy_data);
		if (ret_val)
			return ret_val;

	/* Do not init these registers when the HW is in IAMT mode, since the
	 * firmware will have already initialized them.  We only initialize
	 * them if the HW is not in IAMT mode.
	 */
		if (e1000_check_mng_mode(hw) == FALSE) {
			/* Enable Electrical Idle on the PHY */
			phy_data |= GG82563_PMCR_ENABLE_ELECTRICAL_IDLE;
			ret_val = e1000_write_phy_reg(hw,
					GG82563_PHY_PWR_MGMT_CTRL, phy_data);
			if (ret_val)
				return ret_val;

			ret_val = e1000_read_phy_reg(hw,
					GG82563_PHY_KMRN_MODE_CTRL, &phy_data);
			if (ret_val)
				return ret_val;

			phy_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
			ret_val = e1000_write_phy_reg(hw,
					GG82563_PHY_KMRN_MODE_CTRL, phy_data);

			if (ret_val)
				return ret_val;
		}

		/* Workaround: Disable padding in Kumeran interface in the MAC
		 * and in the PHY to avoid CRC errors.
		 */
		ret_val = e1000_read_phy_reg(hw,
				GG82563_PHY_INBAND_CTRL, &phy_data);
		if (ret_val)
			return ret_val;
		phy_data |= GG82563_ICR_DIS_PADDING;
		ret_val = e1000_write_phy_reg(hw,
				GG82563_PHY_INBAND_CTRL, phy_data);
		if (ret_val)
			return ret_val;
	}
	return E1000_SUCCESS;
}

/********************************************************************
* Copper link setup for e1000_phy_m88 series.
*
* hw - Struct containing variables accessed by shared code
*********************************************************************/
static int32_t
e1000_copper_link_mgp_setup(struct e1000_hw *hw)
{
	int32_t ret_val;
	uint16_t phy_data;

	DEBUGFUNC();

	if (hw->phy_reset_disable)
		return E1000_SUCCESS;

	/* Enable CRS on TX. This must be set for half-duplex operation. */
	ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
	if (ret_val)
		return ret_val;

	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 (hw->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;
	ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
	if (ret_val)
		return ret_val;

	if (hw->phy_revision < M88E1011_I_REV_4) {
		/* Force TX_CLK in the Extended PHY Specific Control Register
		 * to 25MHz clock.
		 */
		ret_val = e1000_read_phy_reg(hw,
				M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
		if (ret_val)
			return ret_val;

		phy_data |= M88E1000_EPSCR_TX_CLK_25;

		if ((hw->phy_revision == E1000_REVISION_2) &&
			(hw->phy_id == M88E1111_I_PHY_ID)) {
			/* Vidalia Phy, set the downshift counter to 5x */
			phy_data &= ~(M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK);
			phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X;
			ret_val = e1000_write_phy_reg(hw,
					M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
			if (ret_val)
				return ret_val;
		} 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 = e1000_write_phy_reg(hw,
					M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
			if (ret_val)
				return ret_val;
		}
	}

	/* SW Reset the PHY so all changes take effect */
	ret_val = e1000_phy_reset(hw);
	if (ret_val) {
		DEBUGOUT("Error Resetting the PHY\n");
		return ret_val;
	}

	return E1000_SUCCESS;
}

/********************************************************************
* Setup auto-negotiation and flow control advertisements,
* and then perform auto-negotiation.
*
* hw - Struct containing variables accessed by shared code
*********************************************************************/
static int32_t
e1000_copper_link_autoneg(struct e1000_hw *hw)
{
	int32_t ret_val;
	uint16_t phy_data;

	DEBUGFUNC();

	/* Perform some bounds checking on the hw->autoneg_advertised
	 * parameter.  If this variable is zero, then set it to the default.
	 */
	hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT;

	/* If autoneg_advertised is zero, we assume it was not defaulted
	 * by the calling code so we set to advertise full capability.
	 */
	if (hw->autoneg_advertised == 0)
		hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT;

	/* IFE phy only supports 10/100 */
	if (hw->phy_type == e1000_phy_ife)
		hw->autoneg_advertised &= AUTONEG_ADVERTISE_10_100_ALL;

	DEBUGOUT("Reconfiguring auto-neg advertisement params\n");
	ret_val = e1000_phy_setup_autoneg(hw);
	if (ret_val) {
		DEBUGOUT("Error Setting up Auto-Negotiation\n");
		return ret_val;
	}
	DEBUGOUT("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 = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
	if (ret_val)
		return ret_val;

	phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
	ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
	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 we do not wait for autonegtation to complete I
	 * do not see a valid link status.
	 * wait_autoneg_complete = 1 .
	 */
	if (hw->wait_autoneg_complete) {
		ret_val = e1000_wait_autoneg(hw);
		if (ret_val) {
			DEBUGOUT("Error while waiting for autoneg"
					"to complete\n");
			return ret_val;
		}
	}

	hw->get_link_status = TRUE;

	return E1000_SUCCESS;
}

/******************************************************************************
* Config the MAC and the PHY after link is up.
*   1) Set up the MAC to the current PHY speed/duplex
*      if we are on 82543.  If we
*      are on newer silicon, we only need to configure
*      collision distance in the Transmit Control Register.
*   2) Set up flow control on the MAC to that established with
*      the link partner.
*   3) Config DSP to improve Gigabit link quality for some PHY revisions.
*
* hw - Struct containing variables accessed by shared code
******************************************************************************/
static int32_t
e1000_copper_link_postconfig(struct e1000_hw *hw)
{
	int32_t ret_val;
	DEBUGFUNC();

	if (hw->mac_type >= e1000_82544) {
		e1000_config_collision_dist(hw);
	} else {
		ret_val = e1000_config_mac_to_phy(hw);
		if (ret_val) {
			DEBUGOUT("Error configuring MAC to PHY settings\n");
			return ret_val;
		}
	}
	ret_val = e1000_config_fc_after_link_up(hw);
	if (ret_val) {
		DEBUGOUT("Error Configuring Flow Control\n");
		return ret_val;
	}
	return E1000_SUCCESS;
}

/******************************************************************************
* Detects which PHY is present and setup the speed and duplex
*
* hw - Struct containing variables accessed by shared code
******************************************************************************/
static int
e1000_setup_copper_link(struct eth_device *nic)
{
	struct e1000_hw *hw = nic->priv;
	int32_t ret_val;
	uint16_t i;
	uint16_t phy_data;
	uint16_t reg_data;

	DEBUGFUNC();

	switch (hw->mac_type) {
	case e1000_80003es2lan:
	case e1000_ich8lan:
		/* Set the mac to wait the maximum time between each
		 * iteration and increase the max iterations when
		 * polling the phy; this fixes erroneous timeouts at 10Mbps. */
		ret_val = e1000_write_kmrn_reg(hw,
				GG82563_REG(0x34, 4), 0xFFFF);
		if (ret_val)
			return ret_val;
		ret_val = e1000_read_kmrn_reg(hw,
				GG82563_REG(0x34, 9), &reg_data);
		if (ret_val)
			return ret_val;
		reg_data |= 0x3F;
		ret_val = e1000_write_kmrn_reg(hw,
				GG82563_REG(0x34, 9), reg_data);
		if (ret_val)
			return ret_val;
	default:
		break;
	}

	/* Check if it is a valid PHY and set PHY mode if necessary. */
	ret_val = e1000_copper_link_preconfig(hw);
	if (ret_val)
		return ret_val;
	switch (hw->mac_type) {
	case e1000_80003es2lan:
		/* Kumeran registers are written-only */
		reg_data =
		E1000_KUMCTRLSTA_INB_CTRL_LINK_STATUS_TX_TIMEOUT_DEFAULT;
		reg_data |= E1000_KUMCTRLSTA_INB_CTRL_DIS_PADDING;
		ret_val = e1000_write_kmrn_reg(hw,
				E1000_KUMCTRLSTA_OFFSET_INB_CTRL, reg_data);
		if (ret_val)
			return ret_val;
		break;
	default:
		break;
	}

	if (hw->phy_type == e1000_phy_igp ||
		hw->phy_type == e1000_phy_igp_3 ||
		hw->phy_type == e1000_phy_igp_2) {
		ret_val = e1000_copper_link_igp_setup(hw);
		if (ret_val)
			return ret_val;
	} else if (hw->phy_type == e1000_phy_m88) {
		ret_val = e1000_copper_link_mgp_setup(hw);
		if (ret_val)
			return ret_val;
	} else if (hw->phy_type == e1000_phy_gg82563) {
		ret_val = e1000_copper_link_ggp_setup(hw);
		if (ret_val)
			return ret_val;
	}

	/* always auto */
	/* Setup autoneg and flow control advertisement
	  * and perform autonegotiation */
	ret_val = e1000_copper_link_autoneg(hw);
	if (ret_val)
		return ret_val;

	/* Check link status. Wait up to 100 microseconds for link to become
	 * valid.
	 */
	for (i = 0; i < 10; i++) {
		ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
		if (ret_val)
			return ret_val;
		ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);