xref: /src/sys/dev/pci/ixgbe/ixgbe_x550.c

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  modification, are permitted provided that the following conditions are met:

   1. Redistributions of source code must retain the above copyright notice,
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      contributors may be used to endorse or promote products derived from
      this software without specific prior written permission.

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/*$FreeBSD: head/sys/dev/ixgbe/ixgbe_x550.c 320688 2017-07-05 17:27:03Z erj $*/

#include "ixgbe_x550.h"
#include "ixgbe_x540.h"
#include "ixgbe_type.h"
#include "ixgbe_api.h"
#include "ixgbe_common.h"
#include "ixgbe_phy.h"
#include <dev/mii/mii.h>

static s32 ixgbe_setup_ixfi_x550em(struct ixgbe_hw *hw, ixgbe_link_speed *speed);
static s32 ixgbe_acquire_swfw_sync_X550a(struct ixgbe_hw *, u32 mask);
static void ixgbe_release_swfw_sync_X550a(struct ixgbe_hw *, u32 mask);
static s32 ixgbe_read_mng_if_sel_x550em(struct ixgbe_hw *hw);

/**
 *  ixgbe_init_ops_X550 - Inits func ptrs and MAC type
 *  @hw: pointer to hardware structure
 *
 *  Initialize the function pointers and assign the MAC type for X550.
 *  Does not touch the hardware.
 **/
s32 ixgbe_init_ops_X550(struct ixgbe_hw *hw)
{
	struct ixgbe_mac_info *mac = &hw->mac;
	struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
	s32 ret_val;

	DEBUGFUNC("ixgbe_init_ops_X550");

	ret_val = ixgbe_init_ops_X540(hw);
	mac->ops.dmac_config = ixgbe_dmac_config_X550;
	mac->ops.dmac_config_tcs = ixgbe_dmac_config_tcs_X550;
	mac->ops.dmac_update_tcs = ixgbe_dmac_update_tcs_X550;
	mac->ops.setup_eee = NULL;
	mac->ops.set_source_address_pruning =
			ixgbe_set_source_address_pruning_X550;
	mac->ops.set_ethertype_anti_spoofing =
			ixgbe_set_ethertype_anti_spoofing_X550;

	mac->ops.get_rtrup2tc = ixgbe_dcb_get_rtrup2tc_generic;
	eeprom->ops.init_params = ixgbe_init_eeprom_params_X550;
	eeprom->ops.calc_checksum = ixgbe_calc_eeprom_checksum_X550;
	eeprom->ops.read = ixgbe_read_ee_hostif_X550;
	eeprom->ops.read_buffer = ixgbe_read_ee_hostif_buffer_X550;
	eeprom->ops.write = ixgbe_write_ee_hostif_X550;
	eeprom->ops.write_buffer = ixgbe_write_ee_hostif_buffer_X550;
	eeprom->ops.update_checksum = ixgbe_update_eeprom_checksum_X550;
	eeprom->ops.validate_checksum = ixgbe_validate_eeprom_checksum_X550;

	mac->ops.disable_mdd = ixgbe_disable_mdd_X550;
	mac->ops.enable_mdd = ixgbe_enable_mdd_X550;
	mac->ops.mdd_event = ixgbe_mdd_event_X550;
	mac->ops.restore_mdd_vf = ixgbe_restore_mdd_vf_X550;
	mac->ops.disable_rx = ixgbe_disable_rx_x550;
	/* Manageability interface */
	mac->ops.set_fw_drv_ver = ixgbe_set_fw_drv_ver_x550;
	switch (hw->device_id) {
	case IXGBE_DEV_ID_X550EM_X_1G_T:
		hw->mac.ops.led_on = NULL;
		hw->mac.ops.led_off = NULL;
		break;
	case IXGBE_DEV_ID_X550EM_X_10G_T:
	case IXGBE_DEV_ID_X550EM_A_10G_T:
		hw->mac.ops.led_on = ixgbe_led_on_t_X550em;
		hw->mac.ops.led_off = ixgbe_led_off_t_X550em;
		break;
	default:
		break;
	}
	return ret_val;
}

/**
 * ixgbe_read_cs4227 - Read CS4227 register
 * @hw: pointer to hardware structure
 * @reg: register number to write
 * @value: pointer to receive value read
 *
 * Returns status code
 **/
static s32 ixgbe_read_cs4227(struct ixgbe_hw *hw, u16 reg, u16 *value)
{
	return hw->link.ops.read_link_unlocked(hw, hw->link.addr, reg, value);
}

/**
 * ixgbe_write_cs4227 - Write CS4227 register
 * @hw: pointer to hardware structure
 * @reg: register number to write
 * @value: value to write to register
 *
 * Returns status code
 **/
static s32 ixgbe_write_cs4227(struct ixgbe_hw *hw, u16 reg, u16 value)
{
	return hw->link.ops.write_link_unlocked(hw, hw->link.addr, reg, value);
}

/**
 * ixgbe_read_pe - Read register from port expander
 * @hw: pointer to hardware structure
 * @reg: register number to read
 * @value: pointer to receive read value
 *
 * Returns status code
 **/
static s32 ixgbe_read_pe(struct ixgbe_hw *hw, u8 reg, u8 *value)
{
	s32 status;

	status = ixgbe_read_i2c_byte_unlocked(hw, reg, IXGBE_PE, value);
	if (status != IXGBE_SUCCESS)
		ERROR_REPORT2(IXGBE_ERROR_CAUTION,
			      "port expander access failed with %d\n", status);
	return status;
}

/**
 * ixgbe_write_pe - Write register to port expander
 * @hw: pointer to hardware structure
 * @reg: register number to write
 * @value: value to write
 *
 * Returns status code
 **/
static s32 ixgbe_write_pe(struct ixgbe_hw *hw, u8 reg, u8 value)
{
	s32 status;

	status = ixgbe_write_i2c_byte_unlocked(hw, reg, IXGBE_PE, value);
	if (status != IXGBE_SUCCESS)
		ERROR_REPORT2(IXGBE_ERROR_CAUTION,
			      "port expander access failed with %d\n", status);
	return status;
}

/**
 * ixgbe_reset_cs4227 - Reset CS4227 using port expander
 * @hw: pointer to hardware structure
 *
 * This function assumes that the caller has acquired the proper semaphore.
 * Returns error code
 **/
static s32 ixgbe_reset_cs4227(struct ixgbe_hw *hw)
{
	s32 status;
	u32 retry;
	u16 value;
	u8 reg;

	/* Trigger hard reset. */
	status = ixgbe_read_pe(hw, IXGBE_PE_OUTPUT, &reg);
	if (status != IXGBE_SUCCESS)
		return status;
	reg |= IXGBE_PE_BIT1;
	status = ixgbe_write_pe(hw, IXGBE_PE_OUTPUT, reg);
	if (status != IXGBE_SUCCESS)
		return status;

	status = ixgbe_read_pe(hw, IXGBE_PE_CONFIG, &reg);
	if (status != IXGBE_SUCCESS)
		return status;
	reg &= ~IXGBE_PE_BIT1;
	status = ixgbe_write_pe(hw, IXGBE_PE_CONFIG, reg);
	if (status != IXGBE_SUCCESS)
		return status;

	status = ixgbe_read_pe(hw, IXGBE_PE_OUTPUT, &reg);
	if (status != IXGBE_SUCCESS)
		return status;
	reg &= ~IXGBE_PE_BIT1;
	status = ixgbe_write_pe(hw, IXGBE_PE_OUTPUT, reg);
	if (status != IXGBE_SUCCESS)
		return status;

	usec_delay(IXGBE_CS4227_RESET_HOLD);

	status = ixgbe_read_pe(hw, IXGBE_PE_OUTPUT, &reg);
	if (status != IXGBE_SUCCESS)
		return status;
	reg |= IXGBE_PE_BIT1;
	status = ixgbe_write_pe(hw, IXGBE_PE_OUTPUT, reg);
	if (status != IXGBE_SUCCESS)
		return status;

	/* Wait for the reset to complete. */
	msec_delay(IXGBE_CS4227_RESET_DELAY);
	for (retry = 0; retry < IXGBE_CS4227_RETRIES; retry++) {
		status = ixgbe_read_cs4227(hw, IXGBE_CS4227_EFUSE_STATUS,
					   &value);
		if (status == IXGBE_SUCCESS &&
		    value == IXGBE_CS4227_EEPROM_LOAD_OK)
			break;
		msec_delay(IXGBE_CS4227_CHECK_DELAY);
	}
	if (retry == IXGBE_CS4227_RETRIES) {
		ERROR_REPORT1(IXGBE_ERROR_INVALID_STATE,
			"CS4227 reset did not complete.");
		return IXGBE_ERR_PHY;
	}

	status = ixgbe_read_cs4227(hw, IXGBE_CS4227_EEPROM_STATUS, &value);
	if (status != IXGBE_SUCCESS ||
	    !(value & IXGBE_CS4227_EEPROM_LOAD_OK)) {
		ERROR_REPORT1(IXGBE_ERROR_INVALID_STATE,
			"CS4227 EEPROM did not load successfully.");
		return IXGBE_ERR_PHY;
	}

	return IXGBE_SUCCESS;
}

/**
 * ixgbe_check_cs4227 - Check CS4227 and reset as needed
 * @hw: pointer to hardware structure
 **/
static void ixgbe_check_cs4227(struct ixgbe_hw *hw)
{
	s32 status = IXGBE_SUCCESS;
	u32 swfw_mask = hw->phy.phy_semaphore_mask;
	u16 value = 0;
	u8 retry;

	for (retry = 0; retry < IXGBE_CS4227_RETRIES; retry++) {
		status = hw->mac.ops.acquire_swfw_sync(hw, swfw_mask);
		if (status != IXGBE_SUCCESS) {
			ERROR_REPORT2(IXGBE_ERROR_CAUTION,
				"semaphore failed with %d", status);
			msec_delay(IXGBE_CS4227_CHECK_DELAY);
			continue;
		}

		/* Get status of reset flow. */
		status = ixgbe_read_cs4227(hw, IXGBE_CS4227_SCRATCH, &value);

		if (status == IXGBE_SUCCESS &&
		    value == IXGBE_CS4227_RESET_COMPLETE)
			goto out;

		if (status != IXGBE_SUCCESS ||
		    value != IXGBE_CS4227_RESET_PENDING)
			break;

		/* Reset is pending. Wait and check again. */
		hw->mac.ops.release_swfw_sync(hw, swfw_mask);
		msec_delay(IXGBE_CS4227_CHECK_DELAY);
	}

	/* If still pending, assume other instance failed. */
	if (retry == IXGBE_CS4227_RETRIES) {
		status = hw->mac.ops.acquire_swfw_sync(hw, swfw_mask);
		if (status != IXGBE_SUCCESS) {
			ERROR_REPORT2(IXGBE_ERROR_CAUTION,
				      "semaphore failed with %d", status);
			return;
		}
	}

	/* Reset the CS4227. */
	status = ixgbe_reset_cs4227(hw);
	if (status != IXGBE_SUCCESS) {
		ERROR_REPORT2(IXGBE_ERROR_INVALID_STATE,
			"CS4227 reset failed: %d", status);
		goto out;
	}

	/* Reset takes so long, temporarily release semaphore in case the
	 * other driver instance is waiting for the reset indication.
	 */
	ixgbe_write_cs4227(hw, IXGBE_CS4227_SCRATCH,
			   IXGBE_CS4227_RESET_PENDING);
	hw->mac.ops.release_swfw_sync(hw, swfw_mask);
	msec_delay(10);
	status = hw->mac.ops.acquire_swfw_sync(hw, swfw_mask);
	if (status != IXGBE_SUCCESS) {
		ERROR_REPORT2(IXGBE_ERROR_CAUTION,
			"semaphore failed with %d", status);
		return;
	}

	/* Record completion for next time. */
	status = ixgbe_write_cs4227(hw, IXGBE_CS4227_SCRATCH,
		IXGBE_CS4227_RESET_COMPLETE);

out:
	hw->mac.ops.release_swfw_sync(hw, swfw_mask);
	msec_delay(hw->eeprom.semaphore_delay);
}

/**
 * ixgbe_setup_mux_ctl - Setup ESDP register for I2C mux control
 * @hw: pointer to hardware structure
 **/
static void ixgbe_setup_mux_ctl(struct ixgbe_hw *hw)
{
	u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);

	if (hw->bus.lan_id) {
		esdp &= ~(IXGBE_ESDP_SDP1_NATIVE | IXGBE_ESDP_SDP1);
		esdp |= IXGBE_ESDP_SDP1_DIR;
	}
	esdp &= ~(IXGBE_ESDP_SDP0_NATIVE | IXGBE_ESDP_SDP0_DIR);
	IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
	IXGBE_WRITE_FLUSH(hw);
}

/**
 * ixgbe_read_phy_reg_mdi_22 - Read from a clause 22 PHY register without lock
 * @hw: pointer to hardware structure
 * @reg_addr: 32 bit address of PHY register to read
 * @dev_type: always unused
 * @phy_data: Pointer to read data from PHY register
 */
static s32 ixgbe_read_phy_reg_mdi_22(struct ixgbe_hw *hw, u32 reg_addr,
				     u32 dev_type, u16 *phy_data)
{
	u32 i, data, command;
	UNREFERENCED_1PARAMETER(dev_type);

	/* Setup and write the read command */
	command = (reg_addr << IXGBE_MSCA_DEV_TYPE_SHIFT) |
		  (hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
		  IXGBE_MSCA_OLD_PROTOCOL | IXGBE_MSCA_READ_AUTOINC |
		  IXGBE_MSCA_MDI_COMMAND;

	IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);

	/* Check every 10 usec to see if the access completed.
	 * The MDI Command bit will clear when the operation is
	 * complete
	 */
	for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
		usec_delay(10);

		command = IXGBE_READ_REG(hw, IXGBE_MSCA);
		if (!(command & IXGBE_MSCA_MDI_COMMAND))
			break;
	}

	if (command & IXGBE_MSCA_MDI_COMMAND) {
		ERROR_REPORT1(IXGBE_ERROR_POLLING,
			      "PHY read command did not complete.\n");
		return IXGBE_ERR_PHY;
	}

	/* Read operation is complete.  Get the data from MSRWD */
	data = IXGBE_READ_REG(hw, IXGBE_MSRWD);
	data >>= IXGBE_MSRWD_READ_DATA_SHIFT;
	*phy_data = (u16)data;

	return IXGBE_SUCCESS;
}

/**
 * ixgbe_write_phy_reg_mdi_22 - Write to a clause 22 PHY register without lock
 * @hw: pointer to hardware structure
 * @reg_addr: 32 bit PHY register to write
 * @dev_type: always unused
 * @phy_data: Data to write to the PHY register
 */
static s32 ixgbe_write_phy_reg_mdi_22(struct ixgbe_hw *hw, u32 reg_addr,
				      u32 dev_type, u16 phy_data)
{
	u32 i, command;
	UNREFERENCED_1PARAMETER(dev_type);

	/* Put the data in the MDI single read and write data register*/
	IXGBE_WRITE_REG(hw, IXGBE_MSRWD, (u32)phy_data);

	/* Setup and write the write command */
	command = (reg_addr << IXGBE_MSCA_DEV_TYPE_SHIFT) |
		  (hw->phy.addr << IXGBE_MSCA_PHY_ADDR_SHIFT) |
		  IXGBE_MSCA_OLD_PROTOCOL | IXGBE_MSCA_WRITE |
		  IXGBE_MSCA_MDI_COMMAND;

	IXGBE_WRITE_REG(hw, IXGBE_MSCA, command);

	/* Check every 10 usec to see if the access completed.
	 * The MDI Command bit will clear when the operation is
	 * complete
	 */
	for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
		usec_delay(10);

		command = IXGBE_READ_REG(hw, IXGBE_MSCA);
		if (!(command & IXGBE_MSCA_MDI_COMMAND))
			break;
	}

	if (command & IXGBE_MSCA_MDI_COMMAND) {
		ERROR_REPORT1(IXGBE_ERROR_POLLING,
			      "PHY write cmd didn't complete\n");
		return IXGBE_ERR_PHY;
	}

	return IXGBE_SUCCESS;
}

/**
 * ixgbe_identify_phy_x550em - Get PHY type based on device id
 * @hw: pointer to hardware structure
 *
 * Returns error code
 */
static s32 ixgbe_identify_phy_x550em(struct ixgbe_hw *hw)
{
	hw->mac.ops.set_lan_id(hw);

	ixgbe_read_mng_if_sel_x550em(hw);

	switch (hw->device_id) {
	case IXGBE_DEV_ID_X550EM_A_SFP:
		return ixgbe_identify_module_generic(hw);
	case IXGBE_DEV_ID_X550EM_X_SFP:
		/* set up for CS4227 usage */
		ixgbe_setup_mux_ctl(hw);
		ixgbe_check_cs4227(hw);
		/* Fallthrough */

	case IXGBE_DEV_ID_X550EM_A_SFP_N:
		return ixgbe_identify_module_generic(hw);
		break;
	case IXGBE_DEV_ID_X550EM_X_KX4:
		hw->phy.type = ixgbe_phy_x550em_kx4;
		break;
	case IXGBE_DEV_ID_X550EM_X_XFI:
		hw->phy.type = ixgbe_phy_x550em_xfi;
		break;
	case IXGBE_DEV_ID_X550EM_X_KR:
	case IXGBE_DEV_ID_X550EM_A_KR:
	case IXGBE_DEV_ID_X550EM_A_KR_L:
		hw->phy.type = ixgbe_phy_x550em_kr;
		break;
	case IXGBE_DEV_ID_X550EM_A_10G_T:
	case IXGBE_DEV_ID_X550EM_X_10G_T:
		return ixgbe_identify_phy_generic(hw);
	case IXGBE_DEV_ID_X550EM_X_1G_T:
		hw->phy.type = ixgbe_phy_ext_1g_t;
		break;
	case IXGBE_DEV_ID_X550EM_A_1G_T:
	case IXGBE_DEV_ID_X550EM_A_1G_T_L:
		hw->phy.type = ixgbe_phy_fw;
		if (hw->bus.lan_id)
			hw->phy.phy_semaphore_mask |= IXGBE_GSSR_PHY1_SM;
		else
			hw->phy.phy_semaphore_mask |= IXGBE_GSSR_PHY0_SM;
		break;
	default:
		break;
	}
	return IXGBE_SUCCESS;
}

/**
 * ixgbe_fw_phy_activity - Perform an activity on a PHY
 * @hw: pointer to hardware structure
 * @activity: activity to perform
 * @data: Pointer to 4 32-bit words of data
 */
s32 ixgbe_fw_phy_activity(struct ixgbe_hw *hw, u16 activity,
			  u32 (*data)[FW_PHY_ACT_DATA_COUNT])
{
	union {
		struct ixgbe_hic_phy_activity_req cmd;
		struct ixgbe_hic_phy_activity_resp rsp;
	} hic;
	u16 retries = FW_PHY_ACT_RETRIES;
	s32 rc;
	u16 i;

	do {
		memset(&hic, 0, sizeof(hic));
		hic.cmd.hdr.cmd = FW_PHY_ACT_REQ_CMD;
		hic.cmd.hdr.buf_len = FW_PHY_ACT_REQ_LEN;
		hic.cmd.hdr.checksum = FW_DEFAULT_CHECKSUM;
		hic.cmd.port_number = hw->bus.lan_id;
		hic.cmd.activity_id = IXGBE_CPU_TO_LE16(activity);
		for (i = 0; i < FW_PHY_ACT_DATA_COUNT; ++i)
			hic.cmd.data[i] = IXGBE_CPU_TO_BE32((*data)[i]);

		rc = ixgbe_host_interface_command(hw, (u32 *)&hic.cmd,
						  sizeof(hic.cmd),
						  IXGBE_HI_COMMAND_TIMEOUT,
						  TRUE);
		if (rc != IXGBE_SUCCESS)
			return rc;
		if (hic.rsp.hdr.cmd_or_resp.ret_status ==
		    FW_CEM_RESP_STATUS_SUCCESS) {
			for (i = 0; i < FW_PHY_ACT_DATA_COUNT; ++i)
				(*data)[i] = IXGBE_BE32_TO_CPU(hic.rsp.data[i]);
			return IXGBE_SUCCESS;
		}
		usec_delay(20);
		--retries;
	} while (retries > 0);

	return IXGBE_ERR_HOST_INTERFACE_COMMAND;
}

static const struct {
	u16 fw_speed;
	ixgbe_link_speed phy_speed;
} ixgbe_fw_map[] = {
	{ FW_PHY_ACT_LINK_SPEED_10, IXGBE_LINK_SPEED_10_FULL },
	{ FW_PHY_ACT_LINK_SPEED_100, IXGBE_LINK_SPEED_100_FULL },
	{ FW_PHY_ACT_LINK_SPEED_1G, IXGBE_LINK_SPEED_1GB_FULL },
	{ FW_PHY_ACT_LINK_SPEED_2_5G, IXGBE_LINK_SPEED_2_5GB_FULL },
	{ FW_PHY_ACT_LINK_SPEED_5G, IXGBE_LINK_SPEED_5GB_FULL },
	{ FW_PHY_ACT_LINK_SPEED_10G, IXGBE_LINK_SPEED_10GB_FULL },
};

/**
 * ixgbe_get_phy_id_fw - Get the phy ID via firmware command
 * @hw: pointer to hardware structure
 *
 * Returns error code
 */
static s32 ixgbe_get_phy_id_fw(struct ixgbe_hw *hw)
{
	u32 info[FW_PHY_ACT_DATA_COUNT] = { 0 };
	u16 phy_speeds;
	u16 phy_id_lo;
	s32 rc;
	u16 i;

	rc = ixgbe_fw_phy_activity(hw, FW_PHY_ACT_GET_PHY_INFO, &info);
	if (rc)
		return rc;

	hw->phy.speeds_supported = 0;
	phy_speeds = info[0] & FW_PHY_INFO_SPEED_MASK;
	for (i = 0; i < sizeof(ixgbe_fw_map) / sizeof(ixgbe_fw_map[0]); ++i) {
		if (phy_speeds & ixgbe_fw_map[i].fw_speed)
			hw->phy.speeds_supported |= ixgbe_fw_map[i].phy_speed;
	}
	if (!hw->phy.autoneg_advertised)
		hw->phy.autoneg_advertised = hw->phy.speeds_supported;

	hw->phy.id = info[0] & FW_PHY_INFO_ID_HI_MASK;
	phy_id_lo = info[1] & FW_PHY_INFO_ID_LO_MASK;
	hw->phy.id |= phy_id_lo & IXGBE_PHY_REVISION_MASK;
	hw->phy.revision = phy_id_lo & ~IXGBE_PHY_REVISION_MASK;
	if (!hw->phy.id || hw->phy.id == IXGBE_PHY_REVISION_MASK)
		return IXGBE_ERR_PHY_ADDR_INVALID;
	return IXGBE_SUCCESS;
}

/**
 * ixgbe_identify_phy_fw - Get PHY type based on firmware command
 * @hw: pointer to hardware structure
 *
 * Returns error code
 */
static s32 ixgbe_identify_phy_fw(struct ixgbe_hw *hw)
{
	if (hw->bus.lan_id)
		hw->phy.phy_semaphore_mask = IXGBE_GSSR_PHY1_SM;
	else
		hw->phy.phy_semaphore_mask = IXGBE_GSSR_PHY0_SM;

	hw->phy.type = ixgbe_phy_fw;
	hw->phy.ops.read_reg = NULL;
	hw->phy.ops.write_reg = NULL;
	return ixgbe_get_phy_id_fw(hw);
}

/**
 * ixgbe_shutdown_fw_phy - Shutdown a firmware-controlled PHY
 * @hw: pointer to hardware structure
 *
 * Returns error code
 */
s32 ixgbe_shutdown_fw_phy(struct ixgbe_hw *hw)
{
	u32 setup[FW_PHY_ACT_DATA_COUNT] = { 0 };

	setup[0] = FW_PHY_ACT_FORCE_LINK_DOWN_OFF;
	return ixgbe_fw_phy_activity(hw, FW_PHY_ACT_FORCE_LINK_DOWN, &setup);
}

static s32 ixgbe_read_phy_reg_x550em(struct ixgbe_hw *hw, u32 reg_addr,
				     u32 device_type, u16 *phy_data)
{
	UNREFERENCED_4PARAMETER(*hw, reg_addr, device_type, *phy_data);
	return IXGBE_NOT_IMPLEMENTED;
}

static s32 ixgbe_write_phy_reg_x550em(struct ixgbe_hw *hw, u32 reg_addr,
				      u32 device_type, u16 phy_data)
{
	UNREFERENCED_4PARAMETER(*hw, reg_addr, device_type, phy_data);
	return IXGBE_NOT_IMPLEMENTED;
}

/**
 * ixgbe_read_i2c_combined_generic - Perform I2C read combined operation
 * @hw: pointer to the hardware structure
 * @addr: I2C bus address to read from
 * @reg: I2C device register to read from
 * @val: pointer to location to receive read value
 *
 * Returns an error code on error.
 **/
static s32 ixgbe_read_i2c_combined_generic(struct ixgbe_hw *hw, u8 addr,
					   u16 reg, u16 *val)
{
	return ixgbe_read_i2c_combined_generic_int(hw, addr, reg, val, TRUE);
}

/**
 * ixgbe_read_i2c_combined_generic_unlocked - Do I2C read combined operation
 * @hw: pointer to the hardware structure
 * @addr: I2C bus address to read from
 * @reg: I2C device register to read from
 * @val: pointer to location to receive read value
 *
 * Returns an error code on error.
 **/
static s32
ixgbe_read_i2c_combined_generic_unlocked(struct ixgbe_hw *hw, u8 addr,
					 u16 reg, u16 *val)
{
	return ixgbe_read_i2c_combined_generic_int(hw, addr, reg, val, FALSE);
}

/**
 * ixgbe_write_i2c_combined_generic - Perform I2C write combined operation
 * @hw: pointer to the hardware structure
 * @addr: I2C bus address to write to
 * @reg: I2C device register to write to
 * @val: value to write
 *
 * Returns an error code on error.
 **/
static s32 ixgbe_write_i2c_combined_generic(struct ixgbe_hw *hw,
					    u8 addr, u16 reg, u16 val)
{
	return ixgbe_write_i2c_combined_generic_int(hw, addr, reg, val, TRUE);
}

/**
 * ixgbe_write_i2c_combined_generic_unlocked - Do I2C write combined operation
 * @hw: pointer to the hardware structure
 * @addr: I2C bus address to write to
 * @reg: I2C device register to write to
 * @val: value to write
 *
 * Returns an error code on error.
 **/
static s32
ixgbe_write_i2c_combined_generic_unlocked(struct ixgbe_hw *hw,
					  u8 addr, u16 reg, u16 val)
{
	return ixgbe_write_i2c_combined_generic_int(hw, addr, reg, val, FALSE);
}

/**
*  ixgbe_init_ops_X550EM - Inits func ptrs and MAC type
*  @hw: pointer to hardware structure
*
*  Initialize the function pointers and for MAC type X550EM.
*  Does not touch the hardware.
**/
s32 ixgbe_init_ops_X550EM(struct ixgbe_hw *hw)
{
	struct ixgbe_mac_info *mac = &hw->mac;
	struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
	struct ixgbe_phy_info *phy = &hw->phy;
	s32 ret_val;

	DEBUGFUNC("ixgbe_init_ops_X550EM");

	/* Similar to X550 so start there. */
	ret_val = ixgbe_init_ops_X550(hw);

	/* Since this function eventually calls
	 * ixgbe_init_ops_540 by design, we are setting
	 * the pointers to NULL explicitly here to overwrite
	 * the values being set in the x540 function.
	 */

	/* Bypass not supported in x550EM */
	mac->ops.bypass_rw = NULL;
	mac->ops.bypass_valid_rd = NULL;
	mac->ops.bypass_set = NULL;
	mac->ops.bypass_rd_eep = NULL;

	/* FCOE not supported in x550EM */
	mac->ops.get_san_mac_addr = NULL;
	mac->ops.set_san_mac_addr = NULL;
	mac->ops.get_wwn_prefix = NULL;
	mac->ops.get_fcoe_boot_status = NULL;

	/* IPsec not supported in x550EM */
	mac->ops.disable_sec_rx_path = NULL;
	mac->ops.enable_sec_rx_path = NULL;

	/* AUTOC register is not present in x550EM. */
	mac->ops.prot_autoc_read = NULL;
	mac->ops.prot_autoc_write = NULL;

	/* X550EM bus type is internal*/
	hw->bus.type = ixgbe_bus_type_internal;
	mac->ops.get_bus_info = ixgbe_get_bus_info_X550em;


	mac->ops.get_media_type = ixgbe_get_media_type_X550em;
	mac->ops.setup_sfp = ixgbe_setup_sfp_modules_X550em;
	mac->ops.get_link_capabilities = ixgbe_get_link_capabilities_X550em;
	mac->ops.reset_hw = ixgbe_reset_hw_X550em;
	mac->ops.get_supported_physical_layer =
				    ixgbe_get_supported_physical_layer_X550em;

	if (mac->ops.get_media_type(hw) == ixgbe_media_type_copper)
		mac->ops.setup_fc = ixgbe_setup_fc_generic;
	else
		mac->ops.setup_fc = ixgbe_setup_fc_X550em;

	/* PHY */
	phy->ops.init = ixgbe_init_phy_ops_X550em;
	switch (hw->device_id) {
	case IXGBE_DEV_ID_X550EM_A_1G_T:
	case IXGBE_DEV_ID_X550EM_A_1G_T_L:
		mac->ops.setup_fc = NULL;
		phy->ops.identify = ixgbe_identify_phy_fw;
		phy->ops.set_phy_power = NULL;
		phy->ops.get_firmware_version = NULL;
		break;
	case IXGBE_DEV_ID_X550EM_X_1G_T:
		mac->ops.setup_fc = NULL;
		phy->ops.identify = ixgbe_identify_phy_x550em;
		phy->ops.set_phy_power = NULL;
		break;
	default:
		phy->ops.identify = ixgbe_identify_phy_x550em;
	}

	if (mac->ops.get_media_type(hw) != ixgbe_media_type_copper)
		phy->ops.set_phy_power = NULL;


	/* EEPROM */
	eeprom->ops.init_params = ixgbe_init_eeprom_params_X540;
	eeprom->ops.read = ixgbe_read_ee_hostif_X550;
	eeprom->ops.read_buffer = ixgbe_read_ee_hostif_buffer_X550;
	eeprom->ops.write = ixgbe_write_ee_hostif_X550;
	eeprom->ops.write_buffer = ixgbe_write_ee_hostif_buffer_X550;
	eeprom->ops.update_checksum = ixgbe_update_eeprom_checksum_X550;
	eeprom->ops.validate_checksum = ixgbe_validate_eeprom_checksum_X550;
	eeprom->ops.calc_checksum = ixgbe_calc_eeprom_checksum_X550;

	return ret_val;
}

#define IXGBE_DENVERTON_WA 1

/**
 * ixgbe_setup_fw_link - Setup firmware-controlled PHYs
 * @hw: pointer to hardware structure
 */
static s32 ixgbe_setup_fw_link(struct ixgbe_hw *hw)
{
	u32 setup[FW_PHY_ACT_DATA_COUNT] = { 0 };
	s32 rc;
#ifdef IXGBE_DENVERTON_WA
	s32 ret_val;
	u16 phydata;
#endif
	u16 i;

	if (hw->phy.reset_disable || ixgbe_check_reset_blocked(hw))
		return 0;

	if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
		ERROR_REPORT1(IXGBE_ERROR_UNSUPPORTED,
			      "ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
		return IXGBE_ERR_INVALID_LINK_SETTINGS;
	}

	switch (hw->fc.requested_mode) {
	case ixgbe_fc_full:
		setup[0] |= FW_PHY_ACT_SETUP_LINK_PAUSE_RXTX <<
			    FW_PHY_ACT_SETUP_LINK_PAUSE_SHIFT;
		break;
	case ixgbe_fc_rx_pause:
		setup[0] |= FW_PHY_ACT_SETUP_LINK_PAUSE_RX <<
			    FW_PHY_ACT_SETUP_LINK_PAUSE_SHIFT;
		break;
	case ixgbe_fc_tx_pause:
		setup[0] |= FW_PHY_ACT_SETUP_LINK_PAUSE_TX <<
			    FW_PHY_ACT_SETUP_LINK_PAUSE_SHIFT;
		break;
	default:
		break;
	}

	for (i = 0; i < sizeof(ixgbe_fw_map) / sizeof(ixgbe_fw_map[0]); ++i) {
		if (hw->phy.autoneg_advertised & ixgbe_fw_map[i].phy_speed)
			setup[0] |= ixgbe_fw_map[i].fw_speed;
	}
	setup[0] |= FW_PHY_ACT_SETUP_LINK_HP | FW_PHY_ACT_SETUP_LINK_AN;

	if (hw->phy.eee_speeds_advertised)
		setup[0] |= FW_PHY_ACT_SETUP_LINK_EEE;

#ifdef IXGBE_DENVERTON_WA
	/* Don't use auto-nego for 10/100Mbps */
	if ((hw->phy.autoneg_advertised == IXGBE_LINK_SPEED_100_FULL)
	    || (hw->phy.autoneg_advertised == IXGBE_LINK_SPEED_10_FULL)) {
		setup[0] &= ~FW_PHY_ACT_SETUP_LINK_AN;
		setup[0] &= ~FW_PHY_ACT_SETUP_LINK_EEE;
		setup[0] &= ~(FW_PHY_ACT_SETUP_LINK_PAUSE_RXTX
		    << FW_PHY_ACT_SETUP_LINK_PAUSE_SHIFT);
	}
#endif

	rc = ixgbe_fw_phy_activity(hw, FW_PHY_ACT_SETUP_LINK, &setup);
	if (rc)
		return rc;

#ifdef IXGBE_DENVERTON_WA
	ret_val = ixgbe_read_phy_reg_x550a(hw, MII_BMCR, 0, &phydata);
	if (ret_val != 0)
		goto out;

	/*
	 *  Broken firmware sets BMCR register incorrectly if
	 * FW_PHY_ACT_SETUP_LINK_AN isn't set.
	 * a) FDX may not be set.
	 * b) BMCR_SPEED1 (bit 6) is always cleard.
	 * + -------+------+-----------+-----+--------------------------+
	 * |request | BMCR | BMCR spd | BMCR |                          |
	 * |        | (HEX)| (in bits)|  FDX |                          |
	 * +--------+------+----------+------+--------------------------+
	 * |   10M  | 0000 |  10M(00) |    0 |                          |
	 * |   10M  | 2000 | 100M(01) |    0 |(I've never observed this)|
	 * |   10M  | 2100 | 100M(01) |    1 |                          |
	 * |  100M  | 0000 |  10M(00) |    0 |                          |
	 * |  100M  | 0100 |  10M(00) |    1 |                          |
	 * +--------------------------+------+--------------------------+
	 */
	if (((hw->phy.autoneg_advertised == IXGBE_LINK_SPEED_100_FULL)
		&& (((phydata & BMCR_FDX) == 0) || (BMCR_SPEED(phydata) == 0)))
	    || ((hw->phy.autoneg_advertised == IXGBE_LINK_SPEED_10_FULL)
		&& (((phydata & BMCR_FDX) == 0)
		    || (BMCR_SPEED(phydata) != BMCR_S10)))) {
		phydata = BMCR_FDX;
		switch (hw->phy.autoneg_advertised) {
		case IXGBE_LINK_SPEED_10_FULL:
			phydata |= BMCR_S10;
			break;
		case IXGBE_LINK_SPEED_100_FULL:
			phydata |= BMCR_S100;
			break;
		case IXGBE_LINK_SPEED_1GB_FULL:
			panic("%s: 1GB_FULL is set", __func__);
			break;
		default:
			break;
		}
		ret_val = ixgbe_write_phy_reg_x550a(hw, MII_BMCR, 0, phydata);
		if (ret_val != 0)
			return ret_val;
	}
out:
#endif
	if (setup[0] == FW_PHY_ACT_SETUP_LINK_RSP_DOWN)
		return IXGBE_ERR_OVERTEMP;
	return IXGBE_SUCCESS;
}

/**
 * ixgbe_fc_autoneg_fw _ Set up flow control for FW-controlled PHYs
 * @hw: pointer to hardware structure
 *
 *  Called at init time to set up flow control.
 */
static s32 ixgbe_fc_autoneg_fw(struct ixgbe_hw *hw)
{
	if (hw->fc.requested_mode == ixgbe_fc_default)
		hw->fc.requested_mode = ixgbe_fc_full;

	return ixgbe_setup_fw_link(hw);
}

/**
 * ixgbe_setup_eee_fw - Enable/disable EEE support
 * @hw: pointer to the HW structure
 * @enable_eee: boolean flag to enable EEE
 *
 * Enable/disable EEE based on enable_eee flag.
 * This function controls EEE for firmware-based PHY implementations.
 */
static s32 ixgbe_setup_eee_fw(struct ixgbe_hw *hw, bool enable_eee)
{
	if (!!hw->phy.eee_speeds_advertised == enable_eee)
		return IXGBE_SUCCESS;
	if (enable_eee)
		hw->phy.eee_speeds_advertised = hw->phy.eee_speeds_supported;
	else
		hw->phy.eee_speeds_advertised = 0;
	return hw->phy.ops.setup_link(hw);
}

/**
*  ixgbe_init_ops_X550EM_a - Inits func ptrs and MAC type
*  @hw: pointer to hardware structure
*
*  Initialize the function pointers and for MAC type X550EM_a.
*  Does not touch the hardware.
**/
s32 ixgbe_init_ops_X550EM_a(struct ixgbe_hw *hw)
{
	struct ixgbe_mac_info *mac = &hw->mac;
	s32 ret_val;

	DEBUGFUNC("ixgbe_init_ops_X550EM_a");

	/* Start with generic X550EM init */
	ret_val = ixgbe_init_ops_X550EM(hw);

	if (hw->device_id == IXGBE_DEV_ID_X550EM_A_SGMII ||
	    hw->device_id == IXGBE_DEV_ID_X550EM_A_SGMII_L) {
		mac->ops.read_iosf_sb_reg = ixgbe_read_iosf_sb_reg_x550;
		mac->ops.write_iosf_sb_reg = ixgbe_write_iosf_sb_reg_x550;
	} else {
		mac->ops.read_iosf_sb_reg = ixgbe_read_iosf_sb_reg_x550a;
		mac->ops.write_iosf_sb_reg = ixgbe_write_iosf_sb_reg_x550a;
	}
	mac->ops.acquire_swfw_sync = ixgbe_acquire_swfw_sync_X550a;
	mac->ops.release_swfw_sync = ixgbe_release_swfw_sync_X550a;

	switch (mac->ops.get_media_type(hw)) {
	case ixgbe_media_type_fiber:
		mac->ops.setup_fc = NULL;
		mac->ops.fc_autoneg = ixgbe_fc_autoneg_fiber_x550em_a;
		break;
	case ixgbe_media_type_backplane:
		mac->ops.fc_autoneg = ixgbe_fc_autoneg_backplane_x550em_a;
		mac->ops.setup_fc = ixgbe_setup_fc_backplane_x550em_a;
		break;
	default:
		break;
	}

	switch (hw->device_id) {
	case IXGBE_DEV_ID_X550EM_A_1G_T:
	case IXGBE_DEV_ID_X550EM_A_1G_T_L:
		mac->ops.fc_autoneg = ixgbe_fc_autoneg_sgmii_x550em_a;
		mac->ops.setup_fc = ixgbe_fc_autoneg_fw;
		mac->ops.setup_eee = ixgbe_setup_eee_fw;
		hw->phy.eee_speeds_supported = IXGBE_LINK_SPEED_100_FULL |
					       IXGBE_LINK_SPEED_1GB_FULL;
		hw->phy.eee_speeds_advertised = hw->phy.eee_speeds_supported;
		break;
	default:
		break;
	}

	return ret_val;
}

/**
*  ixgbe_init_ops_X550EM_x - Inits func ptrs and MAC type
*  @hw: pointer to hardware structure
*
*  Initialize the function pointers and for MAC type X550EM_x.
*  Does not touch the hardware.
**/
s32 ixgbe_init_ops_X550EM_x(struct ixgbe_hw *hw)
{
	struct ixgbe_mac_info *mac = &hw->mac;
	struct ixgbe_link_info *link = &hw->link;
	s32 ret_val;

	DEBUGFUNC("ixgbe_init_ops_X550EM_x");

	/* Start with generic X550EM init */
	ret_val = ixgbe_init_ops_X550EM(hw);

	mac->ops.read_iosf_sb_reg = ixgbe_read_iosf_sb_reg_x550;
	mac->ops.write_iosf_sb_reg = ixgbe_write_iosf_sb_reg_x550;
	mac->ops.acquire_swfw_sync = ixgbe_acquire_swfw_sync_X550em;
	mac->ops.release_swfw_sync = ixgbe_release_swfw_sync_X550em;
	link->ops.read_link = ixgbe_read_i2c_combined_generic;
	link->ops.read_link_unlocked = ixgbe_read_i2c_combined_generic_unlocked;
	link->ops.write_link = ixgbe_write_i2c_combined_generic;
	link->ops.write_link_unlocked =
				      ixgbe_write_i2c_combined_generic_unlocked;
	link->addr = IXGBE_CS4227;

	if (hw->device_id == IXGBE_DEV_ID_X550EM_X_1G_T) {
		mac->ops.setup_fc = NULL;
		mac->ops.setup_eee = NULL;
		mac->ops.init_led_link_act = NULL;
	}

	return ret_val;
}

/**
 *  ixgbe_dmac_config_X550
 *  @hw: pointer to hardware structure
 *
 *  Configure DMA coalescing. If enabling dmac, dmac is activated.
 *  When disabling dmac, dmac enable dmac bit is cleared.
 **/
s32 ixgbe_dmac_config_X550(struct ixgbe_hw *hw)
{
	u32 reg, high_pri_tc;

	DEBUGFUNC("ixgbe_dmac_config_X550");

	/* Disable DMA coalescing before configuring */
	reg = IXGBE_READ_REG(hw, IXGBE_DMACR);
	reg &= ~IXGBE_DMACR_DMAC_EN;
	IXGBE_WRITE_REG(hw, IXGBE_DMACR, reg);

	/* Disable DMA Coalescing if the watchdog timer is 0 */
	if (!hw->mac.dmac_config.watchdog_timer)
		goto out;

	ixgbe_dmac_config_tcs_X550(hw);

	/* Configure DMA Coalescing Control Register */
	reg = IXGBE_READ_REG(hw, IXGBE_DMACR);

	/* Set the watchdog timer in units of 40.96 usec */
	reg &= ~IXGBE_DMACR_DMACWT_MASK;
	reg |= (hw->mac.dmac_config.watchdog_timer * 100) / 4096;

	reg &= ~IXGBE_DMACR_HIGH_PRI_TC_MASK;
	/* If fcoe is enabled, set high priority traffic class */
	if (hw->mac.dmac_config.fcoe_en) {
		high_pri_tc = 1 << hw->mac.dmac_config.fcoe_tc;
		reg |= ((high_pri_tc << IXGBE_DMACR_HIGH_PRI_TC_SHIFT) &
			IXGBE_DMACR_HIGH_PRI_TC_MASK);
	}
	reg |= IXGBE_DMACR_EN_MNG_IND;

	/* Enable DMA coalescing after configuration */
	reg |= IXGBE_DMACR_DMAC_EN;
	IXGBE_WRITE_REG(hw, IXGBE_DMACR, reg);

out:
	return IXGBE_SUCCESS;
}

/**
 *  ixgbe_dmac_config_tcs_X550
 *  @hw: pointer to hardware structure
 *
 *  Configure DMA coalescing threshold per TC. The dmac enable bit must
 *  be cleared before configuring.
 **/
s32 ixgbe_dmac_config_tcs_X550(struct ixgbe_hw *hw)
{
	u32 tc, reg, pb_headroom, rx_pb_size, maxframe_size_kb;

	DEBUGFUNC("ixgbe_dmac_config_tcs_X550");

	/* Configure DMA coalescing enabled */
	switch (hw->mac.dmac_config.link_speed) {
	case IXGBE_LINK_SPEED_10_FULL:
	case IXGBE_LINK_SPEED_100_FULL:
		pb_headroom = IXGBE_DMACRXT_100M;
		break;
	case IXGBE_LINK_SPEED_1GB_FULL:
		pb_headroom = IXGBE_DMACRXT_1G;
		break;
	default:
		pb_headroom = IXGBE_DMACRXT_10G;
		break;
	}

	maxframe_size_kb = ((IXGBE_READ_REG(hw, IXGBE_MAXFRS) >>
			     IXGBE_MHADD_MFS_SHIFT) / 1024);

	/* Set the per Rx packet buffer receive threshold */
	for (tc = 0; tc < IXGBE_DCB_MAX_TRAFFIC_CLASS; tc++) {
		reg = IXGBE_READ_REG(hw, IXGBE_DMCTH(tc));
		reg &= ~IXGBE_DMCTH_DMACRXT_MASK;

		if (tc < hw->mac.dmac_config.num_tcs) {
			/* Get Rx PB size */
			rx_pb_size = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(tc));
			rx_pb_size = (rx_pb_size & IXGBE_RXPBSIZE_MASK) >>
				IXGBE_RXPBSIZE_SHIFT;

			/* Calculate receive buffer threshold in kilobytes */
			if (rx_pb_size > pb_headroom)
				rx_pb_size = rx_pb_size - pb_headroom;
			else
				rx_pb_size = 0;

			/* Minimum of MFS shall be set for DMCTH */
			reg |= (rx_pb_size > maxframe_size_kb) ?
				rx_pb_size : maxframe_size_kb;
		}
		IXGBE_WRITE_REG(hw, IXGBE_DMCTH(tc), reg);
	}
	return IXGBE_SUCCESS;
}

/**
 *  ixgbe_dmac_update_tcs_X550
 *  @hw: pointer to hardware structure
 *
 *  Disables dmac, updates per TC settings, and then enables dmac.
 **/
s32 ixgbe_dmac_update_tcs_X550(struct ixgbe_hw *hw)
{
	u32 reg;

	DEBUGFUNC("ixgbe_dmac_update_tcs_X550");

	/* Disable DMA coalescing before configuring */
	reg = IXGBE_READ_REG(hw, IXGBE_DMACR);
	reg &= ~IXGBE_DMACR_DMAC_EN;
	IXGBE_WRITE_REG(hw, IXGBE_DMACR, reg);

	ixgbe_dmac_config_tcs_X550(hw);

	/* Enable DMA coalescing after configuration */
	reg = IXGBE_READ_REG(hw, IXGBE_DMACR);
	reg |= IXGBE_DMACR_DMAC_EN;
	IXGBE_WRITE_REG(hw, IXGBE_DMACR, reg);

	return IXGBE_SUCCESS;
}

/**
 *  ixgbe_init_eeprom_params_X550 - Initialize EEPROM params
 *  @hw: pointer to hardware structure
 *
 *  Initializes the EEPROM parameters ixgbe_eeprom_info within the
 *  ixgbe_hw struct in order to set up EEPROM access.
 **/
s32 ixgbe_init_eeprom_params_X550(struct ixgbe_hw *hw)
{
	struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
	u32 eec;
	u16 eeprom_size;

	DEBUGFUNC("ixgbe_init_eeprom_params_X550");

	if (eeprom->type == ixgbe_eeprom_uninitialized) {
		eeprom->semaphore_delay = 10;
		eeprom->type = ixgbe_flash;

		eec = IXGBE_READ_REG(hw, IXGBE_EEC);
		eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
				    IXGBE_EEC_SIZE_SHIFT);
		eeprom->word_size = 1 << (eeprom_size +
					  IXGBE_EEPROM_WORD_SIZE_SHIFT);

		DEBUGOUT2("Eeprom params: type = %d, size = %d\n",
			  eeprom->type, eeprom->word_size);
	}

	return IXGBE_SUCCESS;
}

/**
 * ixgbe_set_source_address_pruning_X550 - Enable/Disbale source address pruning
 * @hw: pointer to hardware structure
 * @enable: enable or disable source address pruning
 * @pool: Rx pool to set source address pruning for
 **/
void ixgbe_set_source_address_pruning_X550(struct ixgbe_hw *hw, bool enable,
					   unsigned int pool)
{
	u64 pfflp;

	/* max rx pool is 63 */
	if (pool > 63)
		return;

	pfflp = (u64)IXGBE_READ_REG(hw, IXGBE_PFFLPL);
	pfflp |= (u64)IXGBE_READ_REG(hw, IXGBE_PFFLPH) << 32;

	if (enable)
		pfflp |= (1ULL << pool);
	else
		pfflp &= ~(1ULL << pool);

	IXGBE_WRITE_REG(hw, IXGBE_PFFLPL, (u32)pfflp);
	IXGBE_WRITE_REG(hw, IXGBE_PFFLPH, (u32)(pfflp >> 32));
}

/**
 *  ixgbe_set_ethertype_anti_spoofing_X550 - Enable/Disable Ethertype anti-spoofing
 *  @hw: pointer to hardware structure
 *  @enable: enable or disable switch for Ethertype anti-spoofing
 *  @vf: Virtual Function pool - VF Pool to set for Ethertype anti-spoofing
 *
 **/
void ixgbe_set_ethertype_anti_spoofing_X550(struct ixgbe_hw *hw,
		bool enable, int vf)
{
	int vf_target_reg = vf >> 3;
	int vf_target_shift = vf % 8 + IXGBE_SPOOF_ETHERTYPEAS_SHIFT;
	u32 pfvfspoof;

	DEBUGFUNC("ixgbe_set_ethertype_anti_spoofing_X550");

	pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
	if (enable)
		pfvfspoof |= (1 << vf_target_shift);
	else
		pfvfspoof &= ~(1 << vf_target_shift);

	IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
}

/**
 * ixgbe_iosf_wait - Wait for IOSF command completion
 * @hw: pointer to hardware structure
 * @ctrl: pointer to location to receive final IOSF control value
 *
 * Returns failing status on timeout
 *
 * Note: ctrl can be NULL if the IOSF control register value is not needed
 **/
static s32 ixgbe_iosf_wait(struct ixgbe_hw *hw, u32 *ctrl)
{
	u32 i, command = 0;

	/* Check every 10 usec to see if the address cycle completed.
	 * The SB IOSF BUSY bit will clear when the operation is
	 * complete
	 */
	for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
		command = IXGBE_READ_REG(hw, IXGBE_SB_IOSF_INDIRECT_CTRL);
		if ((command & IXGBE_SB_IOSF_CTRL_BUSY) == 0)
			break;
		usec_delay(10);
	}
	if (ctrl)
		*ctrl = command;
	if (i == IXGBE_MDIO_COMMAND_TIMEOUT) {
		ERROR_REPORT1(IXGBE_ERROR_POLLING, "Wait timed out\n");
		return IXGBE_ERR_PHY;
	}

	return IXGBE_SUCCESS;
}

/**
 *  ixgbe_write_iosf_sb_reg_x550 - Writes a value to specified register
 *  of the IOSF device
 *  @hw: pointer to hardware structure
 *  @reg_addr: 32 bit PHY register to write
 *  @device_type: 3 bit device type
 *  @data: Data to write to the register
 **/
s32 ixgbe_write_iosf_sb_reg_x550(struct ixgbe_hw *hw, u32 reg_addr,
			    u32 device_type, u32 data)
{
	u32 gssr = IXGBE_GSSR_PHY1_SM | IXGBE_GSSR_PHY0_SM;
	u32 command, error __unused;
	s32 ret;

	ret = ixgbe_acquire_swfw_semaphore(hw, gssr);
	if (ret != IXGBE_SUCCESS)
		return ret;

	ret = ixgbe_iosf_wait(hw, NULL);
	if (ret != IXGBE_SUCCESS)
		goto out;

	command = ((reg_addr << IXGBE_SB_IOSF_CTRL_ADDR_SHIFT) |
		   (device_type << IXGBE_SB_IOSF_CTRL_TARGET_SELECT_SHIFT));

	/* Write IOSF control register */
	IXGBE_WRITE_REG(hw, IXGBE_SB_IOSF_INDIRECT_CTRL, command);

	/* Write IOSF data register */
	IXGBE_WRITE_REG(hw, IXGBE_SB_IOSF_INDIRECT_DATA, data);

	ret = ixgbe_iosf_wait(hw, &command);

	if ((command & IXGBE_SB_IOSF_CTRL_RESP_STAT_MASK) != 0) {
		error = (command & IXGBE_SB_IOSF_CTRL_CMPL_ERR_MASK) >>
			 IXGBE_SB_IOSF_CTRL_CMPL_ERR_SHIFT;
		ERROR_REPORT2(IXGBE_ERROR_POLLING,
			      "Failed to write, error %x\n", error);
		ret = IXGBE_ERR_PHY;
	}

out:
	ixgbe_release_swfw_semaphore(hw, gssr);
	return ret;
}

/**
 *  ixgbe_read_iosf_sb_reg_x550 - Reads specified register of the IOSF device
 *  @hw: pointer to hardware structure
 *  @reg_addr: 32 bit PHY register to write
 *  @device_type: 3 bit device type
 *  @data: Pointer to read data from the register
 **/
s32 ixgbe_read_iosf_sb_reg_x550(struct ixgbe_hw *hw, u32 reg_addr,
			   u32 device_type, u32 *data)
{
	u32 gssr = IXGBE_GSSR_PHY1_SM | IXGBE_GSSR_PHY0_SM;
	u32 command, error __unused;
	s32 ret;

	ret = ixgbe_acquire_swfw_semaphore(hw, gssr);
	if (ret != IXGBE_SUCCESS)
		return ret;

	ret = ixgbe_iosf_wait(hw, NULL);
	if (ret != IXGBE_SUCCESS)
		goto out;

	command = ((reg_addr << IXGBE_SB_IOSF_CTRL_ADDR_SHIFT) |
		   (device_type << IXGBE_SB_IOSF_CTRL_TARGET_SELECT_SHIFT));

	/* Write IOSF control register */
	IXGBE_WRITE_REG(hw, IXGBE_SB_IOSF_INDIRECT_CTRL, command);

	ret = ixgbe_iosf_wait(hw, &command);

	if ((command & IXGBE_SB_IOSF_CTRL_RESP_STAT_MASK) != 0) {
		error = (command & IXGBE_SB_IOSF_CTRL_CMPL_ERR_MASK) >>
			 IXGBE_SB_IOSF_CTRL_CMPL_ERR_SHIFT;
		ERROR_REPORT2(IXGBE_ERROR_POLLING,
				"Failed to read, error %x\n", error);
		ret = IXGBE_ERR_PHY;
	}

	if (ret == IXGBE_SUCCESS)
		*data = IXGBE_READ_REG(hw, IXGBE_SB_IOSF_INDIRECT_DATA);

out:
	ixgbe_release_swfw_semaphore(hw, gssr);
	return ret;
}

/**
 * ixgbe_get_phy_token - Get the token for shared phy access
 * @hw: Pointer to hardware structure
 */

s32 ixgbe_get_phy_token(struct ixgbe_hw *hw)
{
	struct ixgbe_hic_phy_token_req token_cmd;
	s32 status;

	token_cmd.hdr.cmd = FW_PHY_TOKEN_REQ_CMD;
	token_cmd.hdr.buf_len = FW_PHY_TOKEN_REQ_LEN;
	token_cmd.hdr.cmd_or_resp.cmd_resv = 0;
	token_cmd.hdr.checksum = FW_DEFAULT_CHECKSUM;
	token_cmd.port_number = hw->bus.lan_id;
	token_cmd.command_type = FW_PHY_TOKEN_REQ;
	token_cmd.pad = 0;
	status = ixgbe_host_interface_command(hw, (u32 *)&token_cmd,
					      sizeof(token_cmd),
					      IXGBE_HI_COMMAND_TIMEOUT,
					      TRUE);
	if (status) {
		DEBUGOUT1("Issuing host interface command failed with Status = %d\n",
			  status);
		return status;
	}
	if (token_cmd.hdr.cmd_or_resp.ret_status == FW_PHY_TOKEN_OK)
		return IXGBE_SUCCESS;
	if (token_cmd.hdr.cmd_or_resp.ret_status != FW_PHY_TOKEN_RETRY) {
		DEBUGOUT1("Host interface command returned 0x%08x , returning IXGBE_ERR_FW_RESP_INVALID\n",
			  token_cmd.hdr.cmd_or_resp.ret_status);
		return IXGBE_ERR_FW_RESP_INVALID;
	}

	DEBUGOUT("Returning  IXGBE_ERR_TOKEN_RETRY\n");
	return IXGBE_ERR_TOKEN_RETRY;
}

/**
 * ixgbe_put_phy_token - Put the token for shared phy access
 * @hw: Pointer to hardware structure
 */

s32 ixgbe_put_phy_token(struct ixgbe_hw *hw)
{
	struct ixgbe_hic_phy_token_req token_cmd;
	s32 status;

	token_cmd.hdr.cmd = FW_PHY_TOKEN_REQ_CMD;
	token_cmd.hdr.buf_len = FW_PHY_TOKEN_REQ_LEN;
	token_cmd.hdr.cmd_or_resp.cmd_resv = 0;
	token_cmd.hdr.checksum = FW_DEFAULT_CHECKSUM;
	token_cmd.port_number = hw->bus.lan_id;
	token_cmd.command_type = FW_PHY_TOKEN_REL;
	token_cmd.pad = 0;
	status = ixgbe_host_interface_command(hw, (u32 *)&token_cmd,
					      sizeof(token_cmd),
					      IXGBE_HI_COMMAND_TIMEOUT,
					      TRUE);
	if (status)
		return status;
	if (token_cmd.hdr.cmd_or_resp.ret_status == FW_PHY_TOKEN_OK)
		return IXGBE_SUCCESS;

	DEBUGOUT("Put PHY Token host interface command failed");
	return IXGBE_ERR_FW_RESP_INVALID;
}

/**
 *  ixgbe_write_iosf_sb_reg_x550a - Writes a value to specified register
 *  of the IOSF device
 *  @hw: pointer to hardware structure
 *  @reg_addr: 32 bit PHY register to write
 *  @device_type: 3 bit device type
 *  @data: Data to write to the register
 **/
s32 ixgbe_write_iosf_sb_reg_x550a(struct ixgbe_hw *hw, u32 reg_addr,
				  u32 device_type, u32 data)
{
	struct ixgbe_hic_internal_phy_req write_cmd;
	s32 status;
	UNREFERENCED_1PARAMETER(device_type);

	memset(&write_cmd, 0, sizeof(write_cmd));
	write_cmd.hdr.cmd = FW_INT_PHY_REQ_CMD;
	write_cmd.hdr.buf_len = FW_INT_PHY_REQ_LEN;
	write_cmd.hdr.checksum = FW_DEFAULT_CHECKSUM;
	write_cmd.port_number = hw->bus.lan_id;
	write_cmd.command_type = FW_INT_PHY_REQ_WRITE;
	write_cmd.address = IXGBE_CPU_TO_BE16(reg_addr);
	write_cmd.write_data = IXGBE_CPU_TO_BE32(data);

	status = ixgbe_host_interface_command(hw, (u32 *)&write_cmd,
					      sizeof(write_cmd),
					      IXGBE_HI_COMMAND_TIMEOUT, FALSE);

	return status;
}

/**
 *  ixgbe_read_iosf_sb_reg_x550a - Reads specified register of the IOSF device
 *  @hw: pointer to hardware structure
 *  @reg_addr: 32 bit PHY register to write
 *  @device_type: 3 bit device type
 *  @data: Pointer to read data from the register
 **/
s32 ixgbe_read_iosf_sb_reg_x550a(struct ixgbe_hw *hw, u32 reg_addr,
				 u32 device_type, u32 *data)
{
	union {
		struct ixgbe_hic_internal_phy_req cmd;
		struct ixgbe_hic_internal_phy_resp rsp;
	} hic;
	s32 status;
	UNREFERENCED_1PARAMETER(device_type);

	memset(&hic, 0, sizeof(hic));
	hic.cmd.hdr.cmd = FW_INT_PHY_REQ_CMD;
	hic.cmd.hdr.buf_len = FW_INT_PHY_REQ_LEN;
	hic.cmd.hdr.checksum = FW_DEFAULT_CHECKSUM;
	hic.cmd.port_number = hw->bus.lan_id;
	hic.cmd.command_type = FW_INT_PHY_REQ_READ;
	hic.cmd.address = IXGBE_CPU_TO_BE16(reg_addr);

	status = ixgbe_host_interface_command(hw, (u32 *)&hic.cmd,
					      sizeof(hic.cmd),
					      IXGBE_HI_COMMAND_TIMEOUT, TRUE);

	/* Extract the register value from the response. */
	*data = IXGBE_BE32_TO_CPU(hic.rsp.read_data);

	return status;
}

/**
 *  ixgbe_disable_mdd_X550
 *  @hw: pointer to hardware structure
 *
 *  Disable malicious driver detection
 **/
void ixgbe_disable_mdd_X550(struct ixgbe_hw *hw)
{
	u32 reg;

	DEBUGFUNC("ixgbe_disable_mdd_X550");

	/* Disable MDD for TX DMA and interrupt */
	reg = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
	reg &= ~(IXGBE_DMATXCTL_MDP_EN | IXGBE_DMATXCTL_MBINTEN);
	IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, reg);

	/* Disable MDD for RX and interrupt */
	reg = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
	reg &= ~(IXGBE_RDRXCTL_MDP_EN | IXGBE_RDRXCTL_MBINTEN);
	IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, reg);
}

/**
 *  ixgbe_enable_mdd_X550
 *  @hw: pointer to hardware structure
 *
 *  Enable malicious driver detection
 **/
void ixgbe_enable_mdd_X550(struct ixgbe_hw *hw)
{
	u32 reg;

	DEBUGFUNC("ixgbe_enable_mdd_X550");

	/* Enable MDD for TX DMA and interrupt */
	reg = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
	reg |= (IXGBE_DMATXCTL_MDP_EN | IXGBE_DMATXCTL_MBINTEN);
	IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, reg);

	/* Enable MDD for RX and interrupt */
	reg = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
	reg |= (IXGBE_RDRXCTL_MDP_EN | IXGBE_RDRXCTL_MBINTEN);
	IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, reg);
}

/**
 *  ixgbe_restore_mdd_vf_X550
 *  @hw: pointer to hardware structure
 *  @vf: vf index
 *
 *  Restore VF that was disabled during malicious driver detection event
 **/
void ixgbe_restore_mdd_vf_X550(struct ixgbe_hw *hw, u32 vf)
{
	u32 idx, reg, num_qs, start_q, bitmask;

	DEBUGFUNC("ixgbe_restore_mdd_vf_X550");

	/* Map VF to queues */
	reg = IXGBE_READ_REG(hw, IXGBE_MRQC);
	switch (reg & IXGBE_MRQC_MRQE_MASK) {
	case IXGBE_MRQC_VMDQRT8TCEN:
		num_qs = 8;  /* 16 VFs / pools */
		bitmask = 0x000000FF;
		break;
	case IXGBE_MRQC_VMDQRSS32EN:
	case IXGBE_MRQC_VMDQRT4TCEN:
		num_qs = 4;  /* 32 VFs / pools */
		bitmask = 0x0000000F;
		break;
	default:            /* 64 VFs / pools */
		num_qs = 2;
		bitmask = 0x00000003;
		break;
	}
	start_q = vf * num_qs;

	/* Release vf's queues by clearing WQBR_TX and WQBR_RX (RW1C) */
	idx = start_q / 32;
	reg = 0;
	reg |= (bitmask << (start_q % 32));
	IXGBE_WRITE_REG(hw, IXGBE_WQBR_TX(idx), reg);
	IXGBE_WRITE_REG(hw, IXGBE_WQBR_RX(idx), reg);
}

/**
 *  ixgbe_mdd_event_X550
 *  @hw: pointer to hardware structure
 *  @vf_bitmap: vf bitmap of malicious vfs
 *
 *  Handle malicious driver detection event.
 **/
void ixgbe_mdd_event_X550(struct ixgbe_hw *hw, u32 *vf_bitmap)
{
	u32 wqbr;
	u32 i, j, reg, q, shift, vf, idx;

	DEBUGFUNC("ixgbe_mdd_event_X550");

	/* figure out pool size for mapping to vf's */
	reg = IXGBE_READ_REG(hw, IXGBE_MRQC);
	switch (reg & IXGBE_MRQC_MRQE_MASK) {
	case IXGBE_MRQC_VMDQRT8TCEN:
		shift = 3;  /* 16 VFs / pools */
		break;
	case IXGBE_MRQC_VMDQRSS32EN:
	case IXGBE_MRQC_VMDQRT4TCEN:
		shift = 2;  /* 32 VFs / pools */
		break;
	default:
		shift = 1;  /* 64 VFs / pools */
		break;
	}

	/* Read WQBR_TX and WQBR_RX and check for malicious queues */
	for (i = 0; i < 4; i++) {
		wqbr = IXGBE_READ_REG(hw, IXGBE_WQBR_TX(i));
		wqbr |= IXGBE_READ_REG(hw, IXGBE_WQBR_RX(i));

		if (!wqbr)
			continue;

		/* Get malicious queue */
		for (j = 0; j < 32 && wqbr; j++) {

			if (!(wqbr & (1 << j)))
				continue;

			/* Get queue from bitmask */
			q = j + (i * 32);

			/* Map queue to vf */
			vf = (q >> shift);

			/* Set vf bit in vf_bitmap */
			idx = vf / 32;
			vf_bitmap[idx] |= (1 << (vf % 32));
			wqbr &= ~(1 << j);
		}
	}
}

/**
 *  ixgbe_get_media_type_X550em - Get media type
 *  @hw: pointer to hardware structure
 *
 *  Returns the media type (fiber, copper, backplane)
 */
enum ixgbe_media_type ixgbe_get_media_type_X550em(struct ixgbe_hw *hw)
{
	enum ixgbe_media_type media_type;

	DEBUGFUNC("ixgbe_get_media_type_X550em");

	/* Detect if there is a copper PHY attached. */
	switch (hw->device_id) {
	case IXGBE_DEV_ID_X550EM_X_KR:
	case IXGBE_DEV_ID_X550EM_X_KX4:
	case IXGBE_DEV_ID_X550EM_X_XFI:
	case IXGBE_DEV_ID_X550EM_A_KR:
	case IXGBE_DEV_ID_X550EM_A_KR_L:
		media_type = ixgbe_media_type_backplane;
		break;
	case IXGBE_DEV_ID_X550EM_X_SFP:
	case IXGBE_DEV_ID_X550EM_A_SFP:
	case IXGBE_DEV_ID_X550EM_A_SFP_N:
	case IXGBE_DEV_ID_X550EM_A_QSFP:
	case IXGBE_DEV_ID_X550EM_A_QSFP_N:
		media_type = ixgbe_media_type_fiber;
		break;
	case IXGBE_DEV_ID_X550EM_X_1G_T:
	case IXGBE_DEV_ID_X550EM_X_10G_T:
	case IXGBE_DEV_ID_X550EM_A_10G_T:
		media_type = ixgbe_media_type_copper;
		break;
	case IXGBE_DEV_ID_X550EM_A_SGMII:
	case IXGBE_DEV_ID_X550EM_A_SGMII_L:
		media_type = ixgbe_media_type_backplane;
		hw->phy.type = ixgbe_phy_sgmii;
		break;
	case IXGBE_DEV_ID_X550EM_A_1G_T:
	case IXGBE_DEV_ID_X550EM_A_1G_T_L:
		media_type = ixgbe_media_type_copper;
		break;
	default:
		media_type = ixgbe_media_type_unknown;
		break;
	}
	return media_type;
}

/**
 *  ixgbe_supported_sfp_modules_X550em - Check if SFP module type is supported
 *  @hw: pointer to hardware structure
 *  @linear: TRUE if SFP module is linear
 */
static s32 ixgbe_supported_sfp_modules_X550em(struct ixgbe_hw *hw, bool *linear)
{
	DEBUGFUNC("ixgbe_supported_sfp_modules_X550em");

	switch (hw->phy.sfp_type) {
	case ixgbe_sfp_type_not_present:
		return IXGBE_ERR_SFP_NOT_PRESENT;
	case ixgbe_sfp_type_da_cu_core0:
	case ixgbe_sfp_type_da_cu_core1:
		*linear = TRUE;
		break;
	case ixgbe_sfp_type_srlr_core0:
	case ixgbe_sfp_type_srlr_core1:
	case ixgbe_sfp_type_da_act_lmt_core0:
	case ixgbe_sfp_type_da_act_lmt_core1:
	case ixgbe_sfp_type_1g_sx_core0:
	case ixgbe_sfp_type_1g_sx_core1:
	case ixgbe_sfp_type_1g_lx_core0:
	case ixgbe_sfp_type_1g_lx_core1:
		*linear = FALSE;
		break;
	case ixgbe_sfp_type_unknown:
	case ixgbe_sfp_type_1g_cu_core0:
	case ixgbe_sfp_type_1g_cu_core1:
	default:
		return IXGBE_ERR_SFP_NOT_SUPPORTED;
	}

	return IXGBE_SUCCESS;
}

/**
 *  ixgbe_identify_sfp_module_X550em - Identifies SFP modules
 *  @hw: pointer to hardware structure
 *
 *  Searches for and identifies the SFP module and assigns appropriate PHY type.
 **/
s32 ixgbe_identify_sfp_module_X550em(struct ixgbe_hw *hw)
{
	s32 status;
	bool linear;

	DEBUGFUNC("ixgbe_identify_sfp_module_X550em");

	status = ixgbe_identify_module_generic(hw);

	if (status != IXGBE_SUCCESS)
		return status;

	/* Check if SFP module is supported */
	status = ixgbe_supported_sfp_modules_X550em(hw, &linear);

	return status;
}

/**
 *  ixgbe_setup_sfp_modules_X550em - Setup MAC link ops
 *  @hw: pointer to hardware structure
 */
s32 ixgbe_setup_sfp_modules_X550em(struct ixgbe_hw *hw)
{
	s32 status;
	bool linear;

	DEBUGFUNC("ixgbe_setup_sfp_modules_X550em");

	/* Check if SFP module is supported */
	status = ixgbe_supported_sfp_modules_X550em(hw, &linear);

	if (status != IXGBE_SUCCESS)
		return status;

	ixgbe_init_mac_link_ops_X550em(hw);
	hw->phy.ops.reset = NULL;

	return IXGBE_SUCCESS;
}

/**
*  ixgbe_restart_an_internal_phy_x550em - restart autonegotiation for the
*  internal PHY
*  @hw: pointer to hardware structure
**/
static s32 ixgbe_restart_an_internal_phy_x550em(struct ixgbe_hw *hw)
{
	s32 status;
	u32 link_ctrl;

	/* Restart auto-negotiation. */
	status = hw->mac.ops.read_iosf_sb_reg(hw,
				       IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
				       IXGBE_SB_IOSF_TARGET_KR_PHY, &link_ctrl);

	if (status) {
		DEBUGOUT("Auto-negotiation did not complete\n");
		return status;
	}

	link_ctrl |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_RESTART;
	status = hw->mac.ops.write_iosf_sb_reg(hw,
					IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, link_ctrl);

	if (hw->mac.type == ixgbe_mac_X550EM_a) {
		u32 flx_mask_st20;

		/* Indicate to FW that AN restart has been asserted */
		status = hw->mac.ops.read_iosf_sb_reg(hw,
				IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
				IXGBE_SB_IOSF_TARGET_KR_PHY, &flx_mask_st20);

		if (status) {
			DEBUGOUT("Auto-negotiation did not complete\n");
			return status;
		}

		flx_mask_st20 |= IXGBE_KRM_PMD_FLX_MASK_ST20_FW_AN_RESTART;
		status = hw->mac.ops.write_iosf_sb_reg(hw,
				IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
				IXGBE_SB_IOSF_TARGET_KR_PHY, flx_mask_st20);
	}

	return status;
}

/**
 * ixgbe_setup_sgmii - Set up link for sgmii
 * @hw: pointer to hardware structure
 */
static s32 ixgbe_setup_sgmii(struct ixgbe_hw *hw, ixgbe_link_speed speed,
			     bool autoneg_wait)
{
	struct ixgbe_mac_info *mac = &hw->mac;
	u32 lval, sval, flx_val;
	s32 rc;

	rc = mac->ops.read_iosf_sb_reg(hw,
				       IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
				       IXGBE_SB_IOSF_TARGET_KR_PHY, &lval);
	if (rc)
		return rc;

	lval &= ~IXGBE_KRM_LINK_CTRL_1_TETH_AN_ENABLE;
	lval &= ~IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_MASK;
	lval |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_SGMII_EN;
	lval |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_CLAUSE_37_EN;
	lval |= IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_1G;
	rc = mac->ops.write_iosf_sb_reg(hw,
					IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, lval);
	if (rc)
		return rc;

	rc = mac->ops.read_iosf_sb_reg(hw,
				       IXGBE_KRM_SGMII_CTRL(hw->bus.lan_id),
				       IXGBE_SB_IOSF_TARGET_KR_PHY, &sval);
	if (rc)
		return rc;

	sval |= IXGBE_KRM_SGMII_CTRL_MAC_TAR_FORCE_10_D;
	sval |= IXGBE_KRM_SGMII_CTRL_MAC_TAR_FORCE_100_D;
	rc = mac->ops.write_iosf_sb_reg(hw,
					IXGBE_KRM_SGMII_CTRL(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, sval);
	if (rc)
		return rc;

	rc = mac->ops.read_iosf_sb_reg(hw,
				    IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
				    IXGBE_SB_IOSF_TARGET_KR_PHY, &flx_val);
	if (rc)
		return rc;

	flx_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_MASK;
	flx_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_1G;
	flx_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_AN_EN;
	flx_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_SGMII_EN;
	flx_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_AN37_EN;

	rc = mac->ops.write_iosf_sb_reg(hw,
				    IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
				    IXGBE_SB_IOSF_TARGET_KR_PHY, flx_val);
	if (rc)
		return rc;

	rc = ixgbe_restart_an_internal_phy_x550em(hw);
	if (rc)
		return rc;

	return hw->phy.ops.setup_link_speed(hw, speed, autoneg_wait);
}

/**
 * ixgbe_setup_sgmii_fw - Set up link for internal PHY SGMII auto-negotiation
 * @hw: pointer to hardware structure
 */
static s32 ixgbe_setup_sgmii_fw(struct ixgbe_hw *hw, ixgbe_link_speed speed,
				bool autoneg_wait)
{
	struct ixgbe_mac_info *mac = &hw->mac;
	u32 lval, sval, flx_val;
	s32 rc;

	rc = mac->ops.read_iosf_sb_reg(hw,
				       IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
				       IXGBE_SB_IOSF_TARGET_KR_PHY, &lval);
	if (rc)
		return rc;

	lval &= ~IXGBE_KRM_LINK_CTRL_1_TETH_AN_ENABLE;
	lval &= ~IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_MASK;
	lval |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_SGMII_EN;
	lval |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_CLAUSE_37_EN;
	lval &= ~IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_1G;
	rc = mac->ops.write_iosf_sb_reg(hw,
					IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, lval);
	if (rc)
		return rc;

	rc = mac->ops.read_iosf_sb_reg(hw,
				       IXGBE_KRM_SGMII_CTRL(hw->bus.lan_id),
				       IXGBE_SB_IOSF_TARGET_KR_PHY, &sval);
	if (rc)
		return rc;

	sval &= ~IXGBE_KRM_SGMII_CTRL_MAC_TAR_FORCE_10_D;
	sval &= ~IXGBE_KRM_SGMII_CTRL_MAC_TAR_FORCE_100_D;
	rc = mac->ops.write_iosf_sb_reg(hw,
					IXGBE_KRM_SGMII_CTRL(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, sval);
	if (rc)
		return rc;

	rc = mac->ops.write_iosf_sb_reg(hw,
					IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, lval);
	if (rc)
		return rc;

	rc = mac->ops.read_iosf_sb_reg(hw,
				    IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
				    IXGBE_SB_IOSF_TARGET_KR_PHY, &flx_val);
	if (rc)
		return rc;

	flx_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_MASK;
	flx_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_AN;
	flx_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_AN_EN;
	flx_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_SGMII_EN;
	flx_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_AN37_EN;

	rc = mac->ops.write_iosf_sb_reg(hw,
				    IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
				    IXGBE_SB_IOSF_TARGET_KR_PHY, flx_val);
	if (rc)
		return rc;

	rc = ixgbe_restart_an_internal_phy_x550em(hw);

	return hw->phy.ops.setup_link_speed(hw, speed, autoneg_wait);
}

/**
 *  ixgbe_init_mac_link_ops_X550em - init mac link function pointers
 *  @hw: pointer to hardware structure
 */
void ixgbe_init_mac_link_ops_X550em(struct ixgbe_hw *hw)
{
	struct ixgbe_mac_info *mac = &hw->mac;

	DEBUGFUNC("ixgbe_init_mac_link_ops_X550em");

	switch (hw->mac.ops.get_media_type(hw)) {
	case ixgbe_media_type_fiber:
		/* CS4227 does not support autoneg, so disable the laser control
		 * functions for SFP+ fiber
		 */
		mac->ops.disable_tx_laser = NULL;
		mac->ops.enable_tx_laser = NULL;
		mac->ops.flap_tx_laser = NULL;
		mac->ops.setup_link = ixgbe_setup_mac_link_multispeed_fiber;
		mac->ops.set_rate_select_speed =
					ixgbe_set_soft_rate_select_speed;

		if ((hw->device_id == IXGBE_DEV_ID_X550EM_A_SFP_N) ||
		    (hw->device_id == IXGBE_DEV_ID_X550EM_A_SFP))
			mac->ops.setup_mac_link =
						ixgbe_setup_mac_link_sfp_x550a;
		else
			mac->ops.setup_mac_link =
						ixgbe_setup_mac_link_sfp_x550em;
		break;
	case ixgbe_media_type_copper:
		if (hw->device_id == IXGBE_DEV_ID_X550EM_X_1G_T)
			break;
		if (hw->mac.type == ixgbe_mac_X550EM_a) {
			if (hw->device_id == IXGBE_DEV_ID_X550EM_A_1G_T ||
			    hw->device_id == IXGBE_DEV_ID_X550EM_A_1G_T_L) {
				mac->ops.setup_link = ixgbe_setup_sgmii_fw;
				mac->ops.check_link =
						   ixgbe_check_mac_link_generic;
			} else {
				mac->ops.setup_link =
						  ixgbe_setup_mac_link_t_X550em;
			}
		} else {
			mac->ops.setup_link = ixgbe_setup_mac_link_t_X550em;
			mac->ops.check_link = ixgbe_check_link_t_X550em;
		}
		break;
	case ixgbe_media_type_backplane:
		if (hw->device_id == IXGBE_DEV_ID_X550EM_A_SGMII ||
		    hw->device_id == IXGBE_DEV_ID_X550EM_A_SGMII_L)
			mac->ops.setup_link = ixgbe_setup_sgmii;
		break;
	default:
		break;
	}
}

/**
 *  ixgbe_get_link_capabilities_x550em - Determines link capabilities
 *  @hw: pointer to hardware structure
 *  @speed: pointer to link speed
 *  @autoneg: TRUE when autoneg or autotry is enabled
 */
s32 ixgbe_get_link_capabilities_X550em(struct ixgbe_hw *hw,
				       ixgbe_link_speed *speed,
				       bool *autoneg)
{
	DEBUGFUNC("ixgbe_get_link_capabilities_X550em");


	if (hw->phy.type == ixgbe_phy_fw) {
		*autoneg = TRUE;
		*speed = hw->phy.speeds_supported;
		return 0;
	}

	/* SFP */
	if (hw->phy.media_type == ixgbe_media_type_fiber) {

		/* CS4227 SFP must not enable auto-negotiation */
		*autoneg = FALSE;

		/* Check if 1G SFP module. */
		if (hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core0 ||
		    hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core1
		    || hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core0 ||
		    hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core1) {
			*speed = IXGBE_LINK_SPEED_1GB_FULL;
			return IXGBE_SUCCESS;
		}

		/* Link capabilities are based on SFP */
		if (hw->phy.multispeed_fiber)
			*speed = IXGBE_LINK_SPEED_10GB_FULL |
				 IXGBE_LINK_SPEED_1GB_FULL;
		else
			*speed = IXGBE_LINK_SPEED_10GB_FULL;
	} else {
		switch (hw->phy.type) {
		case ixgbe_phy_ext_1g_t:
		case ixgbe_phy_sgmii:
			*speed = IXGBE_LINK_SPEED_1GB_FULL;
			break;
		case ixgbe_phy_x550em_kr:
			if (hw->mac.type == ixgbe_mac_X550EM_a) {
				/* check different backplane modes */
				if (hw->phy.nw_mng_if_sel &
					   IXGBE_NW_MNG_IF_SEL_PHY_SPEED_2_5G) {
					*speed = IXGBE_LINK_SPEED_2_5GB_FULL;
					break;
				} else if (hw->device_id ==
						   IXGBE_DEV_ID_X550EM_A_KR_L) {
					*speed = IXGBE_LINK_SPEED_1GB_FULL;
					break;
				}
			}
			/* fall through */
		default:
			*speed = IXGBE_LINK_SPEED_10GB_FULL |
			    IXGBE_LINK_SPEED_1GB_FULL;
			break;
		}
		*autoneg = TRUE;
	}

	return IXGBE_SUCCESS;
}

/**
 * ixgbe_get_lasi_ext_t_x550em - Determime external Base T PHY interrupt cause
 * @hw: pointer to hardware structure
 * @lsc: pointer to boolean flag which indicates whether external Base T
 *       PHY interrupt is lsc
 *
 * Determime if external Base T PHY interrupt cause is high temperature
 * failure alarm or link status change.
 *
 * Return IXGBE_ERR_OVERTEMP if interrupt is high temperature
 * failure alarm, else return PHY access status.
 */
static s32 ixgbe_get_lasi_ext_t_x550em(struct ixgbe_hw *hw, bool *lsc)
{
	u32 status;
	u16 reg;

	*lsc = FALSE;

	/* Vendor alarm triggered */
	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_GLOBAL_CHIP_STD_INT_FLAG,
				      IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
				      &reg);

	if (status != IXGBE_SUCCESS ||
	    !(reg & IXGBE_MDIO_GLOBAL_VEN_ALM_INT_EN))
		return status;

	/* Vendor Auto-Neg alarm triggered or Global alarm 1 triggered */
	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_GLOBAL_INT_CHIP_VEN_FLAG,
				      IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
				      &reg);

	if (status != IXGBE_SUCCESS ||
	    !(reg & (IXGBE_MDIO_GLOBAL_AN_VEN_ALM_INT_EN |
	    IXGBE_MDIO_GLOBAL_ALARM_1_INT)))
		return status;

	/* Global alarm triggered */
	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_GLOBAL_ALARM_1,
				      IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
				      &reg);

	if (status != IXGBE_SUCCESS)
		return status;

	/* If high temperature failure, then return over temp error and exit */
	if (reg & IXGBE_MDIO_GLOBAL_ALM_1_HI_TMP_FAIL) {
		/* power down the PHY in case the PHY FW didn't already */
		ixgbe_set_copper_phy_power(hw, FALSE);
		return IXGBE_ERR_OVERTEMP;
	} else if (reg & IXGBE_MDIO_GLOBAL_ALM_1_DEV_FAULT) {
		/*  device fault alarm triggered */
		status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_GLOBAL_FAULT_MSG,
					  IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
					  &reg);

		if (status != IXGBE_SUCCESS)
			return status;

		/* if device fault was due to high temp alarm handle and exit */
		if (reg == IXGBE_MDIO_GLOBAL_FAULT_MSG_HI_TMP) {
			/* power down the PHY in case the PHY FW didn't */
			ixgbe_set_copper_phy_power(hw, FALSE);
			return IXGBE_ERR_OVERTEMP;
		}
	}

	/* Vendor alarm 2 triggered */
	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_GLOBAL_CHIP_STD_INT_FLAG,
				      IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &reg);

	if (status != IXGBE_SUCCESS ||
	    !(reg & IXGBE_MDIO_GLOBAL_STD_ALM2_INT))
		return status;

	/* link connect/disconnect event occurred */
	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_VENDOR_TX_ALARM2,
				      IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &reg);

	if (status != IXGBE_SUCCESS)
		return status;

	/* Indicate LSC */
	if (reg & IXGBE_MDIO_AUTO_NEG_VEN_LSC)
		*lsc = TRUE;

	return IXGBE_SUCCESS;
}

/**
 * ixgbe_enable_lasi_ext_t_x550em - Enable external Base T PHY interrupts
 * @hw: pointer to hardware structure
 *
 * Enable link status change and temperature failure alarm for the external
 * Base T PHY
 *
 * Returns PHY access status
 */
static s32 ixgbe_enable_lasi_ext_t_x550em(struct ixgbe_hw *hw)
{
	u32 status;
	u16 reg;
	bool lsc;

	/* Clear interrupt flags */
	status = ixgbe_get_lasi_ext_t_x550em(hw, &lsc);

	/* Enable link status change alarm */

	/* Enable the LASI interrupts on X552 devices to receive notifications
	 * of the link configurations of the external PHY and correspondingly
	 * support the configuration of the internal iXFI link, since iXFI does
	 * not support auto-negotiation. This is not required for X553 devices
	 * having KR support, which performs auto-negotiations and which is used
	 * as the internal link to the external PHY. Hence adding a check here
	 * to avoid enabling LASI interrupts for X553 devices.
	 */
	if (hw->mac.type != ixgbe_mac_X550EM_a) {
		status = hw->phy.ops.read_reg(hw,
					IXGBE_MDIO_PMA_TX_VEN_LASI_INT_MASK,
				      IXGBE_MDIO_AUTO_NEG_DEV_TYPE, &reg);

		if (status != IXGBE_SUCCESS)
			return status;

		reg |= IXGBE_MDIO_PMA_TX_VEN_LASI_INT_EN;

		status = hw->phy.ops.write_reg(hw,
					IXGBE_MDIO_PMA_TX_VEN_LASI_INT_MASK,
				       IXGBE_MDIO_AUTO_NEG_DEV_TYPE, reg);

		if (status != IXGBE_SUCCESS)
			return status;
	}

	/* Enable high temperature failure and global fault alarms */
	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_GLOBAL_INT_MASK,
				      IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
				      &reg);

	if (status != IXGBE_SUCCESS)
		return status;

	reg |= (IXGBE_MDIO_GLOBAL_INT_HI_TEMP_EN |
		IXGBE_MDIO_GLOBAL_INT_DEV_FAULT_EN);

	status = hw->phy.ops.write_reg(hw, IXGBE_MDIO_GLOBAL_INT_MASK,
				       IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
				       reg);

	if (status != IXGBE_SUCCESS)
		return status;

	/* Enable vendor Auto-Neg alarm and Global Interrupt Mask 1 alarm */
	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_GLOBAL_INT_CHIP_VEN_MASK,
				      IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
				      &reg);

	if (status != IXGBE_SUCCESS)
		return status;

	reg |= (IXGBE_MDIO_GLOBAL_AN_VEN_ALM_INT_EN |
		IXGBE_MDIO_GLOBAL_ALARM_1_INT);

	status = hw->phy.ops.write_reg(hw, IXGBE_MDIO_GLOBAL_INT_CHIP_VEN_MASK,
				       IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
				       reg);

	if (status != IXGBE_SUCCESS)
		return status;

	/* Enable chip-wide vendor alarm */
	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_GLOBAL_INT_CHIP_STD_MASK,
				      IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
				      &reg);

	if (status != IXGBE_SUCCESS)
		return status;

	reg |= IXGBE_MDIO_GLOBAL_VEN_ALM_INT_EN;

	status = hw->phy.ops.write_reg(hw, IXGBE_MDIO_GLOBAL_INT_CHIP_STD_MASK,
				       IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
				       reg);

	return status;
}

/**
 *  ixgbe_setup_kr_speed_x550em - Configure the KR PHY for link speed.
 *  @hw: pointer to hardware structure
 *  @speed: link speed
 *
 *  Configures the integrated KR PHY.
 **/
static s32 ixgbe_setup_kr_speed_x550em(struct ixgbe_hw *hw,
				       ixgbe_link_speed speed)
{
	s32 status;
	u32 reg_val;

	status = hw->mac.ops.read_iosf_sb_reg(hw,
		IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
		IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
	if (status)
		return status;

	reg_val |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_ENABLE;
	reg_val &= ~(IXGBE_KRM_LINK_CTRL_1_TETH_AN_CAP_KR |
		     IXGBE_KRM_LINK_CTRL_1_TETH_AN_CAP_KX);

	/* Advertise 10G support. */
	if (speed & IXGBE_LINK_SPEED_10GB_FULL)
		reg_val |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_CAP_KR;

	/* Advertise 1G support. */
	if (speed & IXGBE_LINK_SPEED_1GB_FULL)
		reg_val |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_CAP_KX;

	status = hw->mac.ops.write_iosf_sb_reg(hw,
		IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
		IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);

	if (hw->mac.type == ixgbe_mac_X550EM_a) {
		/* Set lane mode  to KR auto negotiation */
		status = hw->mac.ops.read_iosf_sb_reg(hw,
				    IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
				    IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);

		if (status)
			return status;

		reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_MASK;
		reg_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_AN;
		reg_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_AN_EN;
		reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_AN37_EN;
		reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_SGMII_EN;

		status = hw->mac.ops.write_iosf_sb_reg(hw,
				    IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
				    IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
	}

	return ixgbe_restart_an_internal_phy_x550em(hw);
}

/**
 * ixgbe_reset_phy_fw - Reset firmware-controlled PHYs
 * @hw: pointer to hardware structure
 */
static s32 ixgbe_reset_phy_fw(struct ixgbe_hw *hw)
{
	u32 store[FW_PHY_ACT_DATA_COUNT] = { 0 };
	s32 rc;

	if (hw->phy.reset_disable || ixgbe_check_reset_blocked(hw))
		return IXGBE_SUCCESS;

	rc = ixgbe_fw_phy_activity(hw, FW_PHY_ACT_PHY_SW_RESET, &store);
	if (rc)
		return rc;
	memset(store, 0, sizeof(store));

	rc = ixgbe_fw_phy_activity(hw, FW_PHY_ACT_INIT_PHY, &store);
	if (rc)
		return rc;

	return ixgbe_setup_fw_link(hw);
}

/**
 * ixgbe_check_overtemp_fw - Check firmware-controlled PHYs for overtemp
 * @hw: pointer to hardware structure
 */
static s32 ixgbe_check_overtemp_fw(struct ixgbe_hw *hw)
{
	u32 store[FW_PHY_ACT_DATA_COUNT] = { 0 };
	s32 rc;

	rc = ixgbe_fw_phy_activity(hw, FW_PHY_ACT_GET_LINK_INFO, &store);
	if (rc)
		return rc;

	if (store[0] & FW_PHY_ACT_GET_LINK_INFO_TEMP) {
		ixgbe_shutdown_fw_phy(hw);
		return IXGBE_ERR_OVERTEMP;
	}
	return IXGBE_SUCCESS;
}

/**
 *  ixgbe_read_mng_if_sel_x550em - Read NW_MNG_IF_SEL register
 *  @hw: pointer to hardware structure
 *
 *  Read NW_MNG_IF_SEL register and save field values, and check for valid field
 *  values.
 **/
static s32 ixgbe_read_mng_if_sel_x550em(struct ixgbe_hw *hw)
{
	/* Save NW management interface connected on board. This is used
	 * to determine internal PHY mode.
	 */
	hw->phy.nw_mng_if_sel = IXGBE_READ_REG(hw, IXGBE_NW_MNG_IF_SEL);

	/* If X552 (X550EM_a) and MDIO is connected to external PHY, then set
	 * PHY address. This register field was has only been used for X552.
	 */
	if (hw->mac.type == ixgbe_mac_X550EM_a &&
	    hw->phy.nw_mng_if_sel & IXGBE_NW_MNG_IF_SEL_MDIO_ACT) {
		hw->phy.addr = (hw->phy.nw_mng_if_sel &
				IXGBE_NW_MNG_IF_SEL_MDIO_PHY_ADD) >>
			       IXGBE_NW_MNG_IF_SEL_MDIO_PHY_ADD_SHIFT;
	}

	return IXGBE_SUCCESS;
}

/**
 *  ixgbe_init_phy_ops_X550em - PHY/SFP specific init
 *  @hw: pointer to hardware structure
 *
 *  Initialize any function pointers that were not able to be
 *  set during init_shared_code because the PHY/SFP type was
 *  not known.  Perform the SFP init if necessary.
 */
s32 ixgbe_init_phy_ops_X550em(struct ixgbe_hw *hw)
{
	struct ixgbe_phy_info *phy = &hw->phy;
	s32 ret_val;

	DEBUGFUNC("ixgbe_init_phy_ops_X550em");

	hw->mac.ops.set_lan_id(hw);
	ixgbe_read_mng_if_sel_x550em(hw);

	if (hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) {
		phy->phy_semaphore_mask = IXGBE_GSSR_SHARED_I2C_SM;
		ixgbe_setup_mux_ctl(hw);
		phy->ops.identify_sfp = ixgbe_identify_sfp_module_X550em;
	}

	switch (hw->device_id) {
	case IXGBE_DEV_ID_X550EM_A_1G_T:
	case IXGBE_DEV_ID_X550EM_A_1G_T_L:
		phy->ops.read_reg_mdi = ixgbe_read_phy_reg_mdi_22;
		phy->ops.write_reg_mdi = ixgbe_write_phy_reg_mdi_22;
		hw->phy.ops.read_reg = ixgbe_read_phy_reg_x550a;
		hw->phy.ops.write_reg = ixgbe_write_phy_reg_x550a;
		phy->ops.check_overtemp = ixgbe_check_overtemp_fw;
		if (hw->bus.lan_id)
			hw->phy.phy_semaphore_mask |= IXGBE_GSSR_PHY1_SM;
		else
			hw->phy.phy_semaphore_mask |= IXGBE_GSSR_PHY0_SM;

		break;
	case IXGBE_DEV_ID_X550EM_A_10G_T:
	case IXGBE_DEV_ID_X550EM_A_SFP:
		hw->phy.ops.read_reg = ixgbe_read_phy_reg_x550a;
		hw->phy.ops.write_reg = ixgbe_write_phy_reg_x550a;
		if (hw->bus.lan_id)
			hw->phy.phy_semaphore_mask |= IXGBE_GSSR_PHY1_SM;
		else
			hw->phy.phy_semaphore_mask |= IXGBE_GSSR_PHY0_SM;
		break;
	case IXGBE_DEV_ID_X550EM_X_SFP:
		/* set up for CS4227 usage */
		hw->phy.phy_semaphore_mask = IXGBE_GSSR_SHARED_I2C_SM;
		break;
	case IXGBE_DEV_ID_X550EM_X_1G_T:
		phy->ops.read_reg_mdi = NULL;
		phy->ops.write_reg_mdi = NULL;
		break;
	default:
		break;
	}

	/* Identify the PHY or SFP module */
	ret_val = phy->ops.identify(hw);
	if (ret_val == IXGBE_ERR_SFP_NOT_SUPPORTED ||
	    ret_val == IXGBE_ERR_PHY_ADDR_INVALID)
		return ret_val;

	/* Setup function pointers based on detected hardware */
	ixgbe_init_mac_link_ops_X550em(hw);
	if (phy->sfp_type != ixgbe_sfp_type_unknown)
		phy->ops.reset = NULL;

	/* Set functions pointers based on phy type */
	switch (hw->phy.type) {
	case ixgbe_phy_x550em_kx4:
		phy->ops.setup_link = NULL;
		phy->ops.read_reg = ixgbe_read_phy_reg_x550em;
		phy->ops.write_reg = ixgbe_write_phy_reg_x550em;
		break;
	case ixgbe_phy_x550em_kr:
		phy->ops.setup_link = ixgbe_setup_kr_x550em;
		phy->ops.read_reg = ixgbe_read_phy_reg_x550em;
		phy->ops.write_reg = ixgbe_write_phy_reg_x550em;
		break;
	case ixgbe_phy_ext_1g_t:
		/* link is managed by FW */
		phy->ops.setup_link = NULL;
		phy->ops.reset = NULL;
		break;
	case ixgbe_phy_x550em_xfi:
		/* link is managed by HW */
		phy->ops.setup_link = NULL;
		phy->ops.read_reg = ixgbe_read_phy_reg_x550em;
		phy->ops.write_reg = ixgbe_write_phy_reg_x550em;
		break;
	case ixgbe_phy_x550em_ext_t:
		/* If internal link mode is XFI, then setup iXFI internal link,
		 * else setup KR now.
		 */
		phy->ops.setup_internal_link =
					      ixgbe_setup_internal_phy_t_x550em;

		/* setup SW LPLU only for first revision of X550EM_x */
		if ((hw->mac.type == ixgbe_mac_X550EM_x) &&
		    !(IXGBE_FUSES0_REV_MASK &
		      IXGBE_READ_REG(hw, IXGBE_FUSES0_GROUP(0))))
			phy->ops.enter_lplu = ixgbe_enter_lplu_t_x550em;

		phy->ops.handle_lasi = ixgbe_handle_lasi_ext_t_x550em;
		phy->ops.reset = ixgbe_reset_phy_t_X550em;
		break;
	case ixgbe_phy_sgmii:
		phy->ops.setup_link = NULL;
		break;
	case ixgbe_phy_fw:
		phy->ops.setup_link = ixgbe_setup_fw_link;
		phy->ops.reset = ixgbe_reset_phy_fw;
		break;
	default:
		break;
	}
	return ret_val;
}

/**
 * ixgbe_set_mdio_speed - Set MDIO clock speed
 *  @hw: pointer to hardware structure
 */
static void ixgbe_set_mdio_speed(struct ixgbe_hw *hw)
{
	u32 hlreg0;

	switch (hw->device_id) {
	case IXGBE_DEV_ID_X550EM_X_10G_T:
	case IXGBE_DEV_ID_X550EM_A_SGMII:
	case IXGBE_DEV_ID_X550EM_A_SGMII_L:
	case IXGBE_DEV_ID_X550EM_A_10G_T:
	case IXGBE_DEV_ID_X550EM_A_SFP:
	case IXGBE_DEV_ID_X550EM_A_QSFP:
		/* Config MDIO clock speed before the first MDIO PHY access */
		hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
		hlreg0 &= ~IXGBE_HLREG0_MDCSPD;
		IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
		break;
	case IXGBE_DEV_ID_X550EM_A_1G_T:
	case IXGBE_DEV_ID_X550EM_A_1G_T_L:
		/* Select fast MDIO clock speed for these devices */
		hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
		hlreg0 |= IXGBE_HLREG0_MDCSPD;
		IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
		break;
	default:
		break;
	}
}

/**
 *  ixgbe_reset_hw_X550em - Perform hardware reset
 *  @hw: pointer to hardware structure
 *
 *  Resets the hardware by resetting the transmit and receive units, masks
 *  and clears all interrupts, perform a PHY reset, and perform a link (MAC)
 *  reset.
 */
s32 ixgbe_reset_hw_X550em(struct ixgbe_hw *hw)
{
	ixgbe_link_speed link_speed;
	s32 status;
	u32 ctrl = 0;
	u32 i;
	bool link_up = FALSE;
	u32 swfw_mask = hw->phy.phy_semaphore_mask;

	DEBUGFUNC("ixgbe_reset_hw_X550em");

	/* Call adapter stop to disable Tx/Rx and clear interrupts */
	status = hw->mac.ops.stop_adapter(hw);
	if (status != IXGBE_SUCCESS) {
		DEBUGOUT1("Failed to stop adapter, STATUS = %d\n", status);
		return status;
	}
	/* flush pending Tx transactions */
	ixgbe_clear_tx_pending(hw);

	ixgbe_set_mdio_speed(hw);

	/* PHY ops must be identified and initialized prior to reset */
	status = hw->phy.ops.init(hw);

	if (status)
		DEBUGOUT1("Failed to initialize PHY ops, STATUS = %d\n",
			  status);

	if (status == IXGBE_ERR_SFP_NOT_SUPPORTED ||
	    status == IXGBE_ERR_PHY_ADDR_INVALID) {
		DEBUGOUT("Returning from reset HW due to PHY init failure\n");
		return status;
	}

	/* start the external PHY */
	if (hw->phy.type == ixgbe_phy_x550em_ext_t) {
		status = ixgbe_init_ext_t_x550em(hw);
		if (status) {
			DEBUGOUT1("Failed to start the external PHY, STATUS = %d\n",
				  status);
			return status;
		}
	}

	/* Setup SFP module if there is one present. */
	if (hw->phy.sfp_setup_needed) {
		status = hw->mac.ops.setup_sfp(hw);
		hw->phy.sfp_setup_needed = FALSE;
	}

	if (status == IXGBE_ERR_SFP_NOT_SUPPORTED)
		return status;

	/* Reset PHY */
	if (!hw->phy.reset_disable && hw->phy.ops.reset) {
		if (hw->phy.ops.reset(hw) == IXGBE_ERR_OVERTEMP)
			return IXGBE_ERR_OVERTEMP;
	}

mac_reset_top:
	/* Issue global reset to the MAC.  Needs to be SW reset if link is up.
	 * If link reset is used when link is up, it might reset the PHY when
	 * mng is using it.  If link is down or the flag to force full link
	 * reset is set, then perform link reset.
	 */
	ctrl = IXGBE_CTRL_LNK_RST;
	if (!hw->force_full_reset) {
		hw->mac.ops.check_link(hw, &link_speed, &link_up, FALSE);
		if (link_up)
			ctrl = IXGBE_CTRL_RST;
	}

	status = hw->mac.ops.acquire_swfw_sync(hw, swfw_mask);
	if (status != IXGBE_SUCCESS) {
		ERROR_REPORT2(IXGBE_ERROR_CAUTION,
			"semaphore failed with %d", status);
		return IXGBE_ERR_SWFW_SYNC;
	}
	ctrl |= IXGBE_READ_REG(hw, IXGBE_CTRL);
	IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
	IXGBE_WRITE_FLUSH(hw);
	hw->mac.ops.release_swfw_sync(hw, swfw_mask);

	/* Poll for reset bit to self-clear meaning reset is complete */
	for (i = 0; i < 10; i++) {
		usec_delay(1);
		ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
		if (!(ctrl & IXGBE_CTRL_RST_MASK))
			break;
	}

	if (ctrl & IXGBE_CTRL_RST_MASK) {
		status = IXGBE_ERR_RESET_FAILED;
		DEBUGOUT("Reset polling failed to complete.\n");
	}

	msec_delay(50);

	/* Double resets are required for recovery from certain error
	 * conditions.  Between resets, it is necessary to stall to
	 * allow time for any pending HW events to complete.
	 */
	if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) {
		hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
		goto mac_reset_top;
	}

	/* Store the permanent mac address */
	hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);

	/* Store MAC address from RAR0, clear receive address registers, and
	 * clear the multicast table.  Also reset num_rar_entries to 128,
	 * since we modify this value when programming the SAN MAC address.
	 */
	hw->mac.num_rar_entries = 128;
	hw->mac.ops.init_rx_addrs(hw);

	ixgbe_set_mdio_speed(hw);

	if (hw->device_id == IXGBE_DEV_ID_X550EM_X_SFP)
		ixgbe_setup_mux_ctl(hw);

	if (status != IXGBE_SUCCESS)
		DEBUGOUT1("Reset HW failed, STATUS = %d\n", status);

	return status;
}

/**
 * ixgbe_init_ext_t_x550em - Start (unstall) the external Base T PHY.
 * @hw: pointer to hardware structure
 */
s32 ixgbe_init_ext_t_x550em(struct ixgbe_hw *hw)
{
	u32 status;
	u16 reg;

	status = hw->phy.ops.read_reg(hw,
				      IXGBE_MDIO_TX_VENDOR_ALARMS_3,
				      IXGBE_MDIO_PMA_PMD_DEV_TYPE,
				      &reg);

	if (status != IXGBE_SUCCESS)
		return status;

	/* If PHY FW reset completed bit is set then this is the first
	 * SW instance after a power on so the PHY FW must be un-stalled.
	 */
	if (reg & IXGBE_MDIO_TX_VENDOR_ALARMS_3_RST_MASK) {
		status = hw->phy.ops.read_reg(hw,
					IXGBE_MDIO_GLOBAL_RES_PR_10,
					IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
					&reg);

		if (status != IXGBE_SUCCESS)
			return status;

		reg &= ~IXGBE_MDIO_POWER_UP_STALL;

		status = hw->phy.ops.write_reg(hw,
					IXGBE_MDIO_GLOBAL_RES_PR_10,
					IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE,
					reg);

		if (status != IXGBE_SUCCESS)
			return status;
	}

	return status;
}

/**
 *  ixgbe_setup_kr_x550em - Configure the KR PHY.
 *  @hw: pointer to hardware structure
 **/
s32 ixgbe_setup_kr_x550em(struct ixgbe_hw *hw)
{
	/* leave link alone for 2.5G */
	if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_2_5GB_FULL)
		return IXGBE_SUCCESS;

	if (ixgbe_check_reset_blocked(hw))
		return 0;

	return ixgbe_setup_kr_speed_x550em(hw, hw->phy.autoneg_advertised);
}

/**
 *  ixgbe_setup_mac_link_sfp_x550em - Setup internal/external the PHY for SFP
 *  @hw: pointer to hardware structure
 *
 *  Configure the external PHY and the integrated KR PHY for SFP support.
 **/
s32 ixgbe_setup_mac_link_sfp_x550em(struct ixgbe_hw *hw,
				    ixgbe_link_speed speed,
				    bool autoneg_wait_to_complete)
{
	s32 ret_val;
	u16 reg_slice, reg_val;
	bool setup_linear = FALSE;
	UNREFERENCED_1PARAMETER(autoneg_wait_to_complete);

	/* Check if SFP module is supported and linear */
	ret_val = ixgbe_supported_sfp_modules_X550em(hw, &setup_linear);

	/* If no SFP module present, then return success. Return success since
	 * there is no reason to configure CS4227 and SFP not present error is
	 * not excepted in the setup MAC link flow.
	 */
	if (ret_val == IXGBE_ERR_SFP_NOT_PRESENT)
		return IXGBE_SUCCESS;

	if (ret_val != IXGBE_SUCCESS)
		return ret_val;

	/* Configure internal PHY for KR/KX. */
	ixgbe_setup_kr_speed_x550em(hw, speed);

	/* Configure CS4227 LINE side to proper mode. */
	reg_slice = IXGBE_CS4227_LINE_SPARE24_LSB +
		    (hw->bus.lan_id << 12);
	if (setup_linear)
		reg_val = (IXGBE_CS4227_EDC_MODE_CX1 << 1) | 0x1;
	else
		reg_val = (IXGBE_CS4227_EDC_MODE_SR << 1) | 0x1;
	ret_val = hw->link.ops.write_link(hw, hw->link.addr, reg_slice,
					  reg_val);
	return ret_val;
}

/**
 *  ixgbe_setup_sfi_x550a - Configure the internal PHY for native SFI mode
 *  @hw: pointer to hardware structure
 *  @speed: the link speed to force
 *
 *  Configures the integrated PHY for native SFI mode. Used to connect the
 *  internal PHY directly to an SFP cage, without autonegotiation.
 **/
static s32 ixgbe_setup_sfi_x550a(struct ixgbe_hw *hw, ixgbe_link_speed *speed)
{
	struct ixgbe_mac_info *mac = &hw->mac;
	s32 status;
	u32 reg_val;

	/* Disable all AN and force speed to 10G Serial. */
	status = mac->ops.read_iosf_sb_reg(hw,
				IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
	if (status != IXGBE_SUCCESS)
		return status;

	reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_AN_EN;
	reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_AN37_EN;
	reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_SGMII_EN;
	reg_val &= ~IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_MASK;

	/* Select forced link speed for internal PHY. */
	switch (*speed) {
	case IXGBE_LINK_SPEED_10GB_FULL:
		reg_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_10G;
		break;
	case IXGBE_LINK_SPEED_1GB_FULL:
		reg_val |= IXGBE_KRM_PMD_FLX_MASK_ST20_SPEED_1G;
		break;
	default:
		/* Other link speeds are not supported by internal PHY. */
		return IXGBE_ERR_LINK_SETUP;
	}

	status = mac->ops.write_iosf_sb_reg(hw,
				IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);

	/* Toggle port SW reset by AN reset. */
	status = ixgbe_restart_an_internal_phy_x550em(hw);

	return status;
}

/**
 *  ixgbe_setup_mac_link_sfp_x550a - Setup internal PHY for SFP
 *  @hw: pointer to hardware structure
 *
 *  Configure the the integrated PHY for SFP support.
 **/
s32 ixgbe_setup_mac_link_sfp_x550a(struct ixgbe_hw *hw,
				    ixgbe_link_speed speed,
				    bool autoneg_wait_to_complete)
{
	s32 ret_val;
	u16 reg_phy_ext;
	bool setup_linear = FALSE;
	u32 reg_slice, reg_phy_int, slice_offset;

	UNREFERENCED_1PARAMETER(autoneg_wait_to_complete);

	/* Check if SFP module is supported and linear */
	ret_val = ixgbe_supported_sfp_modules_X550em(hw, &setup_linear);

	/* If no SFP module present, then return success. Return success since
	 * SFP not present error is not excepted in the setup MAC link flow.
	 */
	if (ret_val == IXGBE_ERR_SFP_NOT_PRESENT)
		return IXGBE_SUCCESS;

	if (ret_val != IXGBE_SUCCESS)
		return ret_val;

	if (hw->device_id == IXGBE_DEV_ID_X550EM_A_SFP_N) {
		/* Configure internal PHY for native SFI based on module type */
		ret_val = hw->mac.ops.read_iosf_sb_reg(hw,
				   IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
				   IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_phy_int);

		if (ret_val != IXGBE_SUCCESS)
			return ret_val;

		reg_phy_int &= IXGBE_KRM_PMD_FLX_MASK_ST20_SFI_10G_DA;
		if (!setup_linear)
			reg_phy_int |= IXGBE_KRM_PMD_FLX_MASK_ST20_SFI_10G_SR;

		ret_val = hw->mac.ops.write_iosf_sb_reg(hw,
				   IXGBE_KRM_PMD_FLX_MASK_ST20(hw->bus.lan_id),
				   IXGBE_SB_IOSF_TARGET_KR_PHY, reg_phy_int);

		if (ret_val != IXGBE_SUCCESS)
			return ret_val;

		/* Setup SFI internal link. */
		ret_val = ixgbe_setup_sfi_x550a(hw, &speed);
	} else {
		/* Configure internal PHY for KR/KX. */
		ixgbe_setup_kr_speed_x550em(hw, speed);

		if (hw->phy.addr == 0x0 || hw->phy.addr == 0xFFFF) {
			/* Find Address */
			DEBUGOUT("Invalid NW_MNG_IF_SEL.MDIO_PHY_ADD value\n");
			return IXGBE_ERR_PHY_ADDR_INVALID;
		}

		/* Get external PHY SKU id */
		ret_val = hw->phy.ops.read_reg(hw, IXGBE_CS4227_EFUSE_PDF_SKU,
					IXGBE_MDIO_ZERO_DEV_TYPE, &reg_phy_ext);

		if (ret_val != IXGBE_SUCCESS)
			return ret_val;

		/* When configuring quad port CS4223, the MAC instance is part
		 * of the slice offset.
		 */
		if (reg_phy_ext == IXGBE_CS4223_SKU_ID)
			slice_offset = (hw->bus.lan_id +
					(hw->bus.instance_id << 1)) << 12;
		else
			slice_offset = hw->bus.lan_id << 12;

		/* Configure CS4227/CS4223 LINE side to proper mode. */
		reg_slice = IXGBE_CS4227_LINE_SPARE24_LSB + slice_offset;

		ret_val = hw->phy.ops.read_reg(hw, reg_slice,
					IXGBE_MDIO_ZERO_DEV_TYPE, &reg_phy_ext);

		if (ret_val != IXGBE_SUCCESS)
			return ret_val;

		reg_phy_ext &= ~((IXGBE_CS4227_EDC_MODE_CX1 << 1) |
				 (IXGBE_CS4227_EDC_MODE_SR << 1));

		if (setup_linear)
			reg_phy_ext = (IXGBE_CS4227_EDC_MODE_CX1 << 1) | 0x1;
		else
			reg_phy_ext = (IXGBE_CS4227_EDC_MODE_SR << 1) | 0x1;
		ret_val = hw->phy.ops.write_reg(hw, reg_slice,
					 IXGBE_MDIO_ZERO_DEV_TYPE, reg_phy_ext);

		/* Flush previous write with a read */
		ret_val = hw->phy.ops.read_reg(hw, reg_slice,
					IXGBE_MDIO_ZERO_DEV_TYPE, &reg_phy_ext);
	}
	return ret_val;
}

/**
 *  ixgbe_setup_ixfi_x550em_x - MAC specific iXFI configuration
 *  @hw: pointer to hardware structure
 *
 *  iXfI configuration needed for ixgbe_mac_X550EM_x devices.
 **/
static s32 ixgbe_setup_ixfi_x550em_x(struct ixgbe_hw *hw)
{
	struct ixgbe_mac_info *mac = &hw->mac;
	s32 status;
	u32 reg_val;

	/* Disable training protocol FSM. */
	status = mac->ops.read_iosf_sb_reg(hw,
				IXGBE_KRM_RX_TRN_LINKUP_CTRL(hw->bus.lan_id),
				IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
	if (status != IXGBE_SUCCESS)
		return status;
	reg_val |= IXGBE_KRM_RX_TRN_LINKUP_CTRL_CONV_WO_PROTOCOL;
	status = mac->ops.write_iosf_sb_reg(hw,
				IXGBE_KRM_RX_TRN_LINKUP_CTRL(hw->bus.lan_id),
				IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
	if (status != IXGBE_SUCCESS)
		return status;

	/* Disable Flex from training TXFFE. */
	status = mac->ops.read_iosf_sb_reg(hw,
				IXGBE_KRM_DSP_TXFFE_STATE_4(hw->bus.lan_id),
				IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
	if (status != IXGBE_SUCCESS)
		return status;
	reg_val &= ~IXGBE_KRM_DSP_TXFFE_STATE_C0_EN;
	reg_val &= ~IXGBE_KRM_DSP_TXFFE_STATE_CP1_CN1_EN;
	reg_val &= ~IXGBE_KRM_DSP_TXFFE_STATE_CO_ADAPT_EN;
	status = mac->ops.write_iosf_sb_reg(hw,
				IXGBE_KRM_DSP_TXFFE_STATE_4(hw->bus.lan_id),
				IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
	if (status != IXGBE_SUCCESS)
		return status;
	status = mac->ops.read_iosf_sb_reg(hw,
				IXGBE_KRM_DSP_TXFFE_STATE_5(hw->bus.lan_id),
				IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
	if (status != IXGBE_SUCCESS)
		return status;
	reg_val &= ~IXGBE_KRM_DSP_TXFFE_STATE_C0_EN;
	reg_val &= ~IXGBE_KRM_DSP_TXFFE_STATE_CP1_CN1_EN;
	reg_val &= ~IXGBE_KRM_DSP_TXFFE_STATE_CO_ADAPT_EN;
	status = mac->ops.write_iosf_sb_reg(hw,
				IXGBE_KRM_DSP_TXFFE_STATE_5(hw->bus.lan_id),
				IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
	if (status != IXGBE_SUCCESS)
		return status;

	/* Enable override for coefficients. */
	status = mac->ops.read_iosf_sb_reg(hw,
				IXGBE_KRM_TX_COEFF_CTRL_1(hw->bus.lan_id),
				IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
	if (status != IXGBE_SUCCESS)
		return status;
	reg_val |= IXGBE_KRM_TX_COEFF_CTRL_1_OVRRD_EN;
	reg_val |= IXGBE_KRM_TX_COEFF_CTRL_1_CZERO_EN;
	reg_val |= IXGBE_KRM_TX_COEFF_CTRL_1_CPLUS1_OVRRD_EN;
	reg_val |= IXGBE_KRM_TX_COEFF_CTRL_1_CMINUS1_OVRRD_EN;
	status = mac->ops.write_iosf_sb_reg(hw,
				IXGBE_KRM_TX_COEFF_CTRL_1(hw->bus.lan_id),
				IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
	return status;
}

/**
 *  ixgbe_setup_ixfi_x550em - Configure the KR PHY for iXFI mode.
 *  @hw: pointer to hardware structure
 *  @speed: the link speed to force
 *
 *  Configures the integrated KR PHY to use iXFI mode. Used to connect an
 *  internal and external PHY at a specific speed, without autonegotiation.
 **/
static s32 ixgbe_setup_ixfi_x550em(struct ixgbe_hw *hw, ixgbe_link_speed *speed)
{
	struct ixgbe_mac_info *mac = &hw->mac;
	s32 status;
	u32 reg_val;

	/* iXFI is only supported with X552 */
	if (mac->type != ixgbe_mac_X550EM_x)
		return IXGBE_ERR_LINK_SETUP;

	/* Disable AN and force speed to 10G Serial. */
	status = mac->ops.read_iosf_sb_reg(hw,
					IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
	if (status != IXGBE_SUCCESS)
		return status;

	reg_val &= ~IXGBE_KRM_LINK_CTRL_1_TETH_AN_ENABLE;
	reg_val &= ~IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_MASK;

	/* Select forced link speed for internal PHY. */
	switch (*speed) {
	case IXGBE_LINK_SPEED_10GB_FULL:
		reg_val |= IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_10G;
		break;
	case IXGBE_LINK_SPEED_1GB_FULL:
		reg_val |= IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_1G;
		break;
	default:
		/* Other link speeds are not supported by internal KR PHY. */
		return IXGBE_ERR_LINK_SETUP;
	}

	status = mac->ops.write_iosf_sb_reg(hw,
					IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
	if (status != IXGBE_SUCCESS)
		return status;

	/* Additional configuration needed for x550em_x */
	if (hw->mac.type == ixgbe_mac_X550EM_x) {
		status = ixgbe_setup_ixfi_x550em_x(hw);
		if (status != IXGBE_SUCCESS)
			return status;
	}

	/* Toggle port SW reset by AN reset. */
	status = ixgbe_restart_an_internal_phy_x550em(hw);

	return status;
}

/**
 * ixgbe_ext_phy_t_x550em_get_link - Get ext phy link status
 * @hw: address of hardware structure
 * @link_up: address of boolean to indicate link status
 *
 * Returns error code if unable to get link status.
 */
static s32 ixgbe_ext_phy_t_x550em_get_link(struct ixgbe_hw *hw, bool *link_up)
{
	u32 ret;
	u16 autoneg_status;

	*link_up = FALSE;

	/* read this twice back to back to indicate current status */
	ret = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_STATUS,
				   IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
				   &autoneg_status);
	if (ret != IXGBE_SUCCESS)
		return ret;

	ret = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_STATUS,
				   IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
				   &autoneg_status);
	if (ret != IXGBE_SUCCESS)
		return ret;

	*link_up = !!(autoneg_status & IXGBE_MDIO_AUTO_NEG_LINK_STATUS);

	return IXGBE_SUCCESS;
}

/**
 * ixgbe_setup_internal_phy_t_x550em - Configure KR PHY to X557 link
 * @hw: point to hardware structure
 *
 * Configures the link between the integrated KR PHY and the external X557 PHY
 * The driver will call this function when it gets a link status change
 * interrupt from the X557 PHY. This function configures the link speed
 * between the PHYs to match the link speed of the BASE-T link.
 *
 * A return of a non-zero value indicates an error, and the base driver should
 * not report link up.
 */
s32 ixgbe_setup_internal_phy_t_x550em(struct ixgbe_hw *hw)
{
	ixgbe_link_speed force_speed;
	bool link_up;
	u32 status;
	u16 speed;

	if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_copper)
		return IXGBE_ERR_CONFIG;

	if (hw->mac.type == ixgbe_mac_X550EM_x &&
	    !(hw->phy.nw_mng_if_sel & IXGBE_NW_MNG_IF_SEL_INT_PHY_MODE)) {
		/* If link is down, there is no setup necessary so return  */
		status = ixgbe_ext_phy_t_x550em_get_link(hw, &link_up);
		if (status != IXGBE_SUCCESS)
			return status;

		if (!link_up)
			return IXGBE_SUCCESS;

		status = hw->phy.ops.read_reg(hw,
					      IXGBE_MDIO_AUTO_NEG_VENDOR_STAT,
				      IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
				      &speed);
		if (status != IXGBE_SUCCESS)
			return status;

		/* If link is still down - no setup is required so return */
		status = ixgbe_ext_phy_t_x550em_get_link(hw, &link_up);
		if (status != IXGBE_SUCCESS)
			return status;
		if (!link_up)
			return IXGBE_SUCCESS;

		/* clear everything but the speed and duplex bits */
		speed &= IXGBE_MDIO_AUTO_NEG_VENDOR_STATUS_MASK;

		switch (speed) {
		case IXGBE_MDIO_AUTO_NEG_VENDOR_STATUS_10GB_FULL:
			force_speed = IXGBE_LINK_SPEED_10GB_FULL;
			break;
		case IXGBE_MDIO_AUTO_NEG_VENDOR_STATUS_1GB_FULL:
			force_speed = IXGBE_LINK_SPEED_1GB_FULL;
			break;
		default:
			/* Internal PHY does not support anything else */
			return IXGBE_ERR_INVALID_LINK_SETTINGS;
		}

		return ixgbe_setup_ixfi_x550em(hw, &force_speed);
	} else {
		speed = IXGBE_LINK_SPEED_10GB_FULL |
		    IXGBE_LINK_SPEED_1GB_FULL;
		return ixgbe_setup_kr_speed_x550em(hw, speed);
	}
}

/**
 *  ixgbe_setup_phy_loopback_x550em - Configure the KR PHY for loopback.
 *  @hw: pointer to hardware structure
 *
 *  Configures the integrated KR PHY to use internal loopback mode.
 **/
s32 ixgbe_setup_phy_loopback_x550em(struct ixgbe_hw *hw)
{
	s32 status;
	u32 reg_val;

	/* Disable AN and force speed to 10G Serial. */
	status = hw->mac.ops.read_iosf_sb_reg(hw,
		IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
		IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
	if (status != IXGBE_SUCCESS)
		return status;
	reg_val &= ~IXGBE_KRM_LINK_CTRL_1_TETH_AN_ENABLE;
	reg_val &= ~IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_MASK;
	reg_val |= IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_10G;
	status = hw->mac.ops.write_iosf_sb_reg(hw,
		IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
		IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
	if (status != IXGBE_SUCCESS)
		return status;

	/* Set near-end loopback clocks. */
	status = hw->mac.ops.read_iosf_sb_reg(hw,
		IXGBE_KRM_PORT_CAR_GEN_CTRL(hw->bus.lan_id),
		IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
	if (status != IXGBE_SUCCESS)
		return status;
	reg_val |= IXGBE_KRM_PORT_CAR_GEN_CTRL_NELB_32B;
	reg_val |= IXGBE_KRM_PORT_CAR_GEN_CTRL_NELB_KRPCS;
	status = hw->mac.ops.write_iosf_sb_reg(hw,
		IXGBE_KRM_PORT_CAR_GEN_CTRL(hw->bus.lan_id),
		IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
	if (status != IXGBE_SUCCESS)
		return status;

	/* Set loopback enable. */
	status = hw->mac.ops.read_iosf_sb_reg(hw,
		IXGBE_KRM_PMD_DFX_BURNIN(hw->bus.lan_id),
		IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
	if (status != IXGBE_SUCCESS)
		return status;
	reg_val |= IXGBE_KRM_PMD_DFX_BURNIN_TX_RX_KR_LB_MASK;
	status = hw->mac.ops.write_iosf_sb_reg(hw,
		IXGBE_KRM_PMD_DFX_BURNIN(hw->bus.lan_id),
		IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);
	if (status != IXGBE_SUCCESS)
		return status;

	/* Training bypass. */
	status = hw->mac.ops.read_iosf_sb_reg(hw,
		IXGBE_KRM_RX_TRN_LINKUP_CTRL(hw->bus.lan_id),
		IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
	if (status != IXGBE_SUCCESS)
		return status;
	reg_val |= IXGBE_KRM_RX_TRN_LINKUP_CTRL_PROTOCOL_BYPASS;
	status = hw->mac.ops.write_iosf_sb_reg(hw,
		IXGBE_KRM_RX_TRN_LINKUP_CTRL(hw->bus.lan_id),
		IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);

	return status;
}

/**
 *  ixgbe_read_ee_hostif_X550 - Read EEPROM word using a host interface command
 *  assuming that the semaphore is already obtained.
 *  @hw: pointer to hardware structure
 *  @offset: offset of  word in the EEPROM to read
 *  @data: word read from the EEPROM
 *
 *  Reads a 16 bit word from the EEPROM using the hostif.
 **/
s32 ixgbe_read_ee_hostif_X550(struct ixgbe_hw *hw, u16 offset, u16 *data)
{
	const u32 mask = IXGBE_GSSR_SW_MNG_SM | IXGBE_GSSR_EEP_SM;
	struct ixgbe_hic_read_shadow_ram buffer;
	s32 status;

	DEBUGFUNC("ixgbe_read_ee_hostif_X550");
	buffer.hdr.req.cmd = FW_READ_SHADOW_RAM_CMD;
	buffer.hdr.req.buf_lenh = 0;
	buffer.hdr.req.buf_lenl = FW_READ_SHADOW_RAM_LEN;
	buffer.hdr.req.checksum = FW_DEFAULT_CHECKSUM;

	/* convert offset from words to bytes */
	buffer.address = IXGBE_CPU_TO_BE32(offset * 2);
	/* one word */
	buffer.length = IXGBE_CPU_TO_BE16(sizeof(u16));
	buffer.pad2 = 0;
	buffer.pad3 = 0;

	status = hw->mac.ops.acquire_swfw_sync(hw, mask);
	if (status)
		return status;

	status = ixgbe_hic_unlocked(hw, (u32 *)&buffer, sizeof(buffer),
				    IXGBE_HI_COMMAND_TIMEOUT);
	if (!status) {
		*data = (u16)IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG,
						  FW_NVM_DATA_OFFSET);
	}

	hw->mac.ops.release_swfw_sync(hw, mask);
	return status;
}

/**
 *  ixgbe_read_ee_hostif_buffer_X550- Read EEPROM word(s) using hostif
 *  @hw: pointer to hardware structure
 *  @offset: offset of  word in the EEPROM to read
 *  @words: number of words
 *  @data: word(s) read from the EEPROM
 *
 *  Reads a 16 bit word(s) from the EEPROM using the hostif.
 **/
s32 ixgbe_read_ee_hostif_buffer_X550(struct ixgbe_hw *hw,
				     u16 offset, u16 words, u16 *data)
{
	const u32 mask = IXGBE_GSSR_SW_MNG_SM | IXGBE_GSSR_EEP_SM;
	struct ixgbe_hic_read_shadow_ram buffer;
	u32 current_word = 0;
	u16 words_to_read;
	s32 status;
	u32 i;

	DEBUGFUNC("ixgbe_read_ee_hostif_buffer_X550");

	/* Take semaphore for the entire operation. */
	status = hw->mac.ops.acquire_swfw_sync(hw, mask);
	if (status) {
		DEBUGOUT("EEPROM read buffer - semaphore failed\n");
		return status;
	}

	while (words) {
		if (words > FW_MAX_READ_BUFFER_SIZE / 2)
			words_to_read = FW_MAX_READ_BUFFER_SIZE / 2;
		else
			words_to_read = words;

		buffer.hdr.req.cmd = FW_READ_SHADOW_RAM_CMD;
		buffer.hdr.req.buf_lenh = 0;
		buffer.hdr.req.buf_lenl = FW_READ_SHADOW_RAM_LEN;
		buffer.hdr.req.checksum = FW_DEFAULT_CHECKSUM;

		/* convert offset from words to bytes */
		buffer.address = IXGBE_CPU_TO_BE32((offset + current_word) * 2);
		buffer.length = IXGBE_CPU_TO_BE16(words_to_read * 2);
		buffer.pad2 = 0;
		buffer.pad3 = 0;

		status = ixgbe_hic_unlocked(hw, (u32 *)&buffer, sizeof(buffer),
					    IXGBE_HI_COMMAND_TIMEOUT);

		if (status) {
			DEBUGOUT("Host interface command failed\n");
			goto out;
		}

		for (i = 0; i < words_to_read; i++) {
			u32 reg = IXGBE_FLEX_MNG + (FW_NVM_DATA_OFFSET << 2) +
				  2 * i;
			u32 value = IXGBE_READ_REG(hw, reg);

			data[current_word] = (u16)(value & 0xffff);
			current_word++;
			i++;
			if (i < words_to_read) {
				value >>= 16;
				data[current_word] = (u16)(value & 0xffff);
				current_word++;
			}
		}
		words -= words_to_read;
	}

out:
	hw->mac.ops.release_swfw_sync(hw, mask);
	return status;
}

/**
 *  ixgbe_write_ee_hostif_X550 - Write EEPROM word using hostif
 *  @hw: pointer to hardware structure
 *  @offset: offset of  word in the EEPROM to write
 *  @data: word write to the EEPROM
 *
 *  Write a 16 bit word to the EEPROM using the hostif.
 **/
s32 ixgbe_write_ee_hostif_data_X550(struct ixgbe_hw *hw, u16 offset,
				    u16 data)
{
	s32 status;
	struct ixgbe_hic_write_shadow_ram buffer;

	DEBUGFUNC("ixgbe_write_ee_hostif_data_X550");

	buffer.hdr.req.cmd = FW_WRITE_SHADOW_RAM_CMD;
	buffer.hdr.req.buf_lenh = 0;
	buffer.hdr.req.buf_lenl = FW_WRITE_SHADOW_RAM_LEN;
	buffer.hdr.req.checksum = FW_DEFAULT_CHECKSUM;

	 /* one word */
	buffer.length = IXGBE_CPU_TO_BE16(sizeof(u16));
	buffer.data = data;
	buffer.address = IXGBE_CPU_TO_BE32(offset * 2);

	status = ixgbe_host_interface_command(hw, (u32 *)&buffer,
					      sizeof(buffer),
					      IXGBE_HI_COMMAND_TIMEOUT, FALSE);

	return status;
}

/**
 *  ixgbe_write_ee_hostif_X550 - Write EEPROM word using hostif
 *  @hw: pointer to hardware structure
 *  @offset: offset of  word in the EEPROM to write
 *  @data: word write to the EEPROM
 *
 *  Write a 16 bit word to the EEPROM using the hostif.
 **/
s32 ixgbe_write_ee_hostif_X550(struct ixgbe_hw *hw, u16 offset,
			       u16 data)
{
	s32 status = IXGBE_SUCCESS;

	DEBUGFUNC("ixgbe_write_ee_hostif_X550");

	if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
	    IXGBE_SUCCESS) {
		status = ixgbe_write_ee_hostif_data_X550(hw, offset, data);
		hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
	} else {
		DEBUGOUT("write ee hostif failed to get semaphore");
		status = IXGBE_ERR_SWFW_SYNC;
	}

	return status;
}

/**
 *  ixgbe_write_ee_hostif_buffer_X550 - Write EEPROM word(s) using hostif
 *  @hw: pointer to hardware structure
 *  @offset: offset of  word in the EEPROM to write
 *  @words: number of words
 *  @data: word(s) write to the EEPROM
 *
 *  Write a 16 bit word(s) to the EEPROM using the hostif.
 **/
s32 ixgbe_write_ee_hostif_buffer_X550(struct ixgbe_hw *hw,
				      u16 offset, u16 words, u16 *data)
{
	s32 status = IXGBE_SUCCESS;
	u32 i = 0;

	DEBUGFUNC("ixgbe_write_ee_hostif_buffer_X550");

	/* Take semaphore for the entire operation. */
	status = hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
	if (status != IXGBE_SUCCESS) {
		DEBUGOUT("EEPROM write buffer - semaphore failed\n");
		goto out;
	}

	for (i = 0; i < words; i++) {
		status = ixgbe_write_ee_hostif_data_X550(hw, offset + i,
							 data[i]);

		if (status != IXGBE_SUCCESS) {
			DEBUGOUT("Eeprom buffered write failed\n");
			break;
		}
	}

	hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
out:

	return status;
}

/**
 * ixgbe_checksum_ptr_x550 - Checksum one pointer region
 * @hw: pointer to hardware structure
 * @ptr: pointer offset in eeprom
 * @size: size of section pointed by ptr, if 0 first word will be used as size
 * @csum: address of checksum to update
 *
 * Returns error status for any failure
 */
static s32 ixgbe_checksum_ptr_x550(struct ixgbe_hw *hw, u16 ptr,
				   u16 size, u16 *csum, u16 *buffer,
				   u32 buffer_size)
{
	u16 buf[256];
	s32 status;
	u16 length, bufsz, i, start;
	u16 *local_buffer;

	bufsz = sizeof(buf) / sizeof(buf[0]);

	/* Read a chunk at the pointer location */
	if (!buffer) {
		status = ixgbe_read_ee_hostif_buffer_X550(hw, ptr, bufsz, buf);
		if (status) {
			DEBUGOUT("Failed to read EEPROM image\n");
			return status;
		}
		local_buffer = buf;
	} else {
		if (buffer_size < ptr)
			return  IXGBE_ERR_PARAM;
		local_buffer = &buffer[ptr];
	}

	if (size) {
		start = 0;
		length = size;
	} else {
		start = 1;
		length = local_buffer[0];

		/* Skip pointer section if length is invalid. */
		if (length == 0xFFFF || length == 0 ||
		    (ptr + length) >= hw->eeprom.word_size)
			return IXGBE_SUCCESS;
	}

	if (buffer && ((u32)start + (u32)length > buffer_size))
		return IXGBE_ERR_PARAM;

	for (i = start; length; i++, length--) {
		if (i == bufsz && !buffer) {
			ptr += bufsz;
			i = 0;
			if (length < bufsz)
				bufsz = length;

			/* Read a chunk at the pointer location */
			status = ixgbe_read_ee_hostif_buffer_X550(hw, ptr,
								  bufsz, buf);
			if (status) {
				DEBUGOUT("Failed to read EEPROM image\n");
				return status;
			}
		}
		*csum += local_buffer[i];
	}
	return IXGBE_SUCCESS;
}

/**
 *  ixgbe_calc_checksum_X550 - Calculates and returns the checksum
 *  @hw: pointer to hardware structure
 *  @buffer: pointer to buffer containing calculated checksum
 *  @buffer_size: size of buffer
 *
 *  Returns a negative error code on error, or the 16-bit checksum
 **/
s32 ixgbe_calc_checksum_X550(struct ixgbe_hw *hw, u16 *buffer, u32 buffer_size)
{
	u16 eeprom_ptrs[IXGBE_EEPROM_LAST_WORD + 1];
	u16 *local_buffer;
	s32 status;
	u16 checksum = 0;
	u16 pointer, i, size;

	DEBUGFUNC("ixgbe_calc_eeprom_checksum_X550");

	hw->eeprom.ops.init_params(hw);

	if (!buffer) {
		/* Read pointer area */
		status = ixgbe_read_ee_hostif_buffer_X550(hw, 0,
						     IXGBE_EEPROM_LAST_WORD + 1,
						     eeprom_ptrs);
		if (status) {
			DEBUGOUT("Failed to read EEPROM image\n");
			return status;
		}
		local_buffer = eeprom_ptrs;
	} else {
		if (buffer_size < IXGBE_EEPROM_LAST_WORD)
			return IXGBE_ERR_PARAM;
		local_buffer = buffer;
	}

	/*
	 * For X550 hardware include 0x0-0x41 in the checksum, skip the
	 * checksum word itself
	 */
	for (i = 0; i <= IXGBE_EEPROM_LAST_WORD; i++)
		if (i != IXGBE_EEPROM_CHECKSUM)
			checksum += local_buffer[i];

	/*
	 * Include all data from pointers 0x3, 0x6-0xE.  This excludes the
	 * FW, PHY module, and PCIe Expansion/Option ROM pointers.
	 */
	for (i = IXGBE_PCIE_ANALOG_PTR_X550; i < IXGBE_FW_PTR; i++) {
		if (i == IXGBE_PHY_PTR || i == IXGBE_OPTION_ROM_PTR)
			continue;

		pointer = local_buffer[i];

		/* Skip pointer section if the pointer is invalid. */
		if (pointer == 0xFFFF || pointer == 0 ||
		    pointer >= hw->eeprom.word_size)
			continue;

		switch (i) {
		case IXGBE_PCIE_GENERAL_PTR:
			size = IXGBE_IXGBE_PCIE_GENERAL_SIZE;
			break;
		case IXGBE_PCIE_CONFIG0_PTR:
		case IXGBE_PCIE_CONFIG1_PTR:
			size = IXGBE_PCIE_CONFIG_SIZE;
			break;
		default:
			size = 0;
			break;
		}

		status = ixgbe_checksum_ptr_x550(hw, pointer, size, &checksum,
						buffer, buffer_size);
		if (status)
			return status;
	}

	checksum = (u16)IXGBE_EEPROM_SUM - checksum;

	return (s32)checksum;
}

/**
 *  ixgbe_calc_eeprom_checksum_X550 - Calculates and returns the checksum
 *  @hw: pointer to hardware structure
 *
 *  Returns a negative error code on error, or the 16-bit checksum
 **/
s32 ixgbe_calc_eeprom_checksum_X550(struct ixgbe_hw *hw)
{
	return ixgbe_calc_checksum_X550(hw, NULL, 0);
}

/**
 *  ixgbe_validate_eeprom_checksum_X550 - Validate EEPROM checksum
 *  @hw: pointer to hardware structure
 *  @checksum_val: calculated checksum
 *
 *  Performs checksum calculation and validates the EEPROM checksum.  If the
 *  caller does not need checksum_val, the value can be NULL.
 **/
s32 ixgbe_validate_eeprom_checksum_X550(struct ixgbe_hw *hw, u16 *checksum_val)
{
	s32 status;
	u16 checksum;
	u16 read_checksum = 0;

	DEBUGFUNC("ixgbe_validate_eeprom_checksum_X550");

	/* Read the first word from the EEPROM. If this times out or fails, do
	 * not continue or we could be in for a very long wait while every
	 * EEPROM read fails
	 */
	status = hw->eeprom.ops.read(hw, 0, &checksum);
	if (status) {
		DEBUGOUT("EEPROM read failed\n");
		return status;
	}

	status = hw->eeprom.ops.calc_checksum(hw);
	if (status < 0)
		return status;

	checksum = (u16)(status & 0xffff);

	status = ixgbe_read_ee_hostif_X550(hw, IXGBE_EEPROM_CHECKSUM,
					   &read_checksum);
	if (status)
		return status;

	/* Verify read checksum from EEPROM is the same as
	 * calculated checksum
	 */
	if (read_checksum != checksum) {
		status = IXGBE_ERR_EEPROM_CHECKSUM;
		ERROR_REPORT1(IXGBE_ERROR_INVALID_STATE,
			     "Invalid EEPROM checksum");
	}

	/* If the user cares, return the calculated checksum */
	if (checksum_val)
		*checksum_val = checksum;

	return status;
}

/**
 * ixgbe_update_eeprom_checksum_X550 - Updates the EEPROM checksum and flash
 * @hw: pointer to hardware structure
 *
 * After writing EEPROM to shadow RAM using EEWR register, software calculates
 * checksum and updates the EEPROM and instructs the hardware to update
 * the flash.
 **/
s32 ixgbe_update_eeprom_checksum_X550(struct ixgbe_hw *hw)
{
	s32 status;
	u16 checksum = 0;

	DEBUGFUNC("ixgbe_update_eeprom_checksum_X550");

	/* Read the first word from the EEPROM. If this times out or fails, do
	 * not continue or we could be in for a very long wait while every
	 * EEPROM read fails
	 */
	status = ixgbe_read_ee_hostif_X550(hw, 0, &checksum);
	if (status) {
		DEBUGOUT("EEPROM read failed\n");
		return status;
	}

	status = ixgbe_calc_eeprom_checksum_X550(hw);
	if (status < 0)
		return status;

	checksum = (u16)(status & 0xffff);

	status = ixgbe_write_ee_hostif_X550(hw, IXGBE_EEPROM_CHECKSUM,
					    checksum);
	if (status)
		return status;

	status = ixgbe_update_flash_X550(hw);

	return status;
}

/**
 *  ixgbe_update_flash_X550 - Instruct HW to copy EEPROM to Flash device
 *  @hw: pointer to hardware structure
 *
 *  Issue a shadow RAM dump to FW to copy EEPROM from shadow RAM to the flash.
 **/
s32 ixgbe_update_flash_X550(struct ixgbe_hw *hw)
{
	s32 status = IXGBE_SUCCESS;
	union ixgbe_hic_hdr2 buffer;

	DEBUGFUNC("ixgbe_update_flash_X550");

	buffer.req.cmd = FW_SHADOW_RAM_DUMP_CMD;
	buffer.req.buf_lenh = 0;
	buffer.req.buf_lenl = FW_SHADOW_RAM_DUMP_LEN;
	buffer.req.checksum = FW_DEFAULT_CHECKSUM;

	status = ixgbe_host_interface_command(hw, (u32 *)&buffer,
					      sizeof(buffer),
					      IXGBE_HI_COMMAND_TIMEOUT, FALSE);

	return status;
}

/**
 *  ixgbe_get_supported_physical_layer_X550em - Returns physical layer type
 *  @hw: pointer to hardware structure
 *
 *  Determines physical layer capabilities of the current configuration.
 **/
u64 ixgbe_get_supported_physical_layer_X550em(struct ixgbe_hw *hw)
{
	u64 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;
	u16 ext_ability = 0;

	DEBUGFUNC("ixgbe_get_supported_physical_layer_X550em");

	hw->phy.ops.identify(hw);

	switch (hw->phy.type) {
	case ixgbe_phy_x550em_kr:
		if (hw->mac.type == ixgbe_mac_X550EM_a) {
			if (hw->phy.nw_mng_if_sel &
			    IXGBE_NW_MNG_IF_SEL_PHY_SPEED_2_5G) {
				physical_layer =
					IXGBE_PHYSICAL_LAYER_2500BASE_KX;
				break;
			} else if (hw->device_id ==
				   IXGBE_DEV_ID_X550EM_A_KR_L) {
				physical_layer =
					IXGBE_PHYSICAL_LAYER_1000BASE_KX;
				break;
			}
		}
		/* fall through */
	case ixgbe_phy_x550em_xfi:
		physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_KR |
				 IXGBE_PHYSICAL_LAYER_1000BASE_KX;
		break;
	case ixgbe_phy_x550em_kx4:
		physical_layer = IXGBE_PHYSICAL_LAYER_10GBASE_KX4 |
				 IXGBE_PHYSICAL_LAYER_1000BASE_KX;
		break;
	case ixgbe_phy_x550em_ext_t:
		hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_EXT_ABILITY,
				     IXGBE_MDIO_PMA_PMD_DEV_TYPE,
				     &ext_ability);
		if (ext_ability & IXGBE_MDIO_PHY_10GBASET_ABILITY)
			physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_T;
		if (ext_ability & IXGBE_MDIO_PHY_1000BASET_ABILITY)
			physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_T;
		break;
	case ixgbe_phy_fw:
		if (hw->phy.speeds_supported & IXGBE_LINK_SPEED_1GB_FULL)
			physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_T;
		if (hw->phy.speeds_supported & IXGBE_LINK_SPEED_100_FULL)
			physical_layer |= IXGBE_PHYSICAL_LAYER_100BASE_TX;
		if (hw->phy.speeds_supported & IXGBE_LINK_SPEED_10_FULL)
			physical_layer |= IXGBE_PHYSICAL_LAYER_10BASE_T;
		break;
	case ixgbe_phy_sgmii:
		physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_KX;
		break;
	case ixgbe_phy_ext_1g_t:
		physical_layer = IXGBE_PHYSICAL_LAYER_1000BASE_T;
		break;
	default:
		break;
	}

	if (hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber)
		physical_layer = ixgbe_get_supported_phy_sfp_layer_generic(hw);

	return physical_layer;
}

/**
 * ixgbe_get_bus_info_x550em - Set PCI bus info
 * @hw: pointer to hardware structure
 *
 * Sets bus link width and speed to unknown because X550em is
 * not a PCI device.
 **/
s32 ixgbe_get_bus_info_X550em(struct ixgbe_hw *hw)
{

	DEBUGFUNC("ixgbe_get_bus_info_x550em");

	hw->bus.width = ixgbe_bus_width_unknown;
	hw->bus.speed = ixgbe_bus_speed_unknown;

	hw->mac.ops.set_lan_id(hw);

	return IXGBE_SUCCESS;
}

/**
 * ixgbe_disable_rx_x550 - Disable RX unit
 *
 * Enables the Rx DMA unit for x550
 **/
void ixgbe_disable_rx_x550(struct ixgbe_hw *hw)
{
	u32 rxctrl, pfdtxgswc;
	s32 status;
	struct ixgbe_hic_disable_rxen fw_cmd;

	DEBUGFUNC("ixgbe_disable_rx_dma_x550");

	rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
	if (rxctrl & IXGBE_RXCTRL_RXEN) {
		pfdtxgswc = IXGBE_READ_REG(hw, IXGBE_PFDTXGSWC);
		if (pfdtxgswc & IXGBE_PFDTXGSWC_VT_LBEN) {
			pfdtxgswc &= ~IXGBE_PFDTXGSWC_VT_LBEN;
			IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, pfdtxgswc);
			hw->mac.set_lben = TRUE;
		} else {
			hw->mac.set_lben = FALSE;
		}

		fw_cmd.hdr.cmd = FW_DISABLE_RXEN_CMD;
		fw_cmd.hdr.buf_len = FW_DISABLE_RXEN_LEN;
		fw_cmd.hdr.checksum = FW_DEFAULT_CHECKSUM;
		fw_cmd.port_number = (u8)hw->bus.lan_id;

		status = ixgbe_host_interface_command(hw, (u32 *)&fw_cmd,
					sizeof(struct ixgbe_hic_disable_rxen),
					IXGBE_HI_COMMAND_TIMEOUT, TRUE);

		/* If we fail - disable RX using register write */
		if (status) {
			rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
			if (rxctrl & IXGBE_RXCTRL_RXEN) {
				rxctrl &= ~IXGBE_RXCTRL_RXEN;
				IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl);
			}
		}
	}
}

/**
 * ixgbe_enter_lplu_x550em - Transition to low power states
 *  @hw: pointer to hardware structure
 *
 * Configures Low Power Link Up on transition to low power states
 * (from D0 to non-D0). Link is required to enter LPLU so avoid resetting the
 * X557 PHY immediately prior to entering LPLU.
 **/
s32 ixgbe_enter_lplu_t_x550em(struct ixgbe_hw *hw)
{
	u16 an_10g_cntl_reg, autoneg_reg, speed;
	s32 status;
	ixgbe_link_speed lcd_speed;
	u32 save_autoneg;
	bool link_up;

	/* SW LPLU not required on later HW revisions. */
	if ((hw->mac.type == ixgbe_mac_X550EM_x) &&
	    (IXGBE_FUSES0_REV_MASK &
	     IXGBE_READ_REG(hw, IXGBE_FUSES0_GROUP(0))))
		return IXGBE_SUCCESS;

	/* If blocked by MNG FW, then don't restart AN */
	if (ixgbe_check_reset_blocked(hw))
		return IXGBE_SUCCESS;

	status = ixgbe_ext_phy_t_x550em_get_link(hw, &link_up);
	if (status != IXGBE_SUCCESS)
		return status;

	status = ixgbe_read_eeprom(hw, NVM_INIT_CTRL_3, &hw->eeprom.ctrl_word_3);

	if (status != IXGBE_SUCCESS)
		return status;

	/* If link is down, LPLU disabled in NVM, WoL disabled, or manageability
	 * disabled, then force link down by entering low power mode.
	 */
	if (!link_up || !(hw->eeprom.ctrl_word_3 & NVM_INIT_CTRL_3_LPLU) ||
	    !(hw->wol_enabled || ixgbe_mng_present(hw)))
		return ixgbe_set_copper_phy_power(hw, FALSE);

	/* Determine LCD */
	status = ixgbe_get_lcd_t_x550em(hw, &lcd_speed);

	if (status != IXGBE_SUCCESS)
		return status;

	/* If no valid LCD link speed, then force link down and exit. */
	if (lcd_speed == IXGBE_LINK_SPEED_UNKNOWN)
		return ixgbe_set_copper_phy_power(hw, FALSE);

	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_VENDOR_STAT,
				      IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
				      &speed);

	if (status != IXGBE_SUCCESS)
		return status;

	/* If no link now, speed is invalid so take link down */
	status = ixgbe_ext_phy_t_x550em_get_link(hw, &link_up);
	if (status != IXGBE_SUCCESS)
		return ixgbe_set_copper_phy_power(hw, FALSE);

	/* clear everything but the speed bits */
	speed &= IXGBE_MDIO_AUTO_NEG_VEN_STAT_SPEED_MASK;

	/* If current speed is already LCD, then exit. */
	if (((speed == IXGBE_MDIO_AUTO_NEG_VENDOR_STATUS_1GB) &&
	     (lcd_speed == IXGBE_LINK_SPEED_1GB_FULL)) ||
	    ((speed == IXGBE_MDIO_AUTO_NEG_VENDOR_STATUS_10GB) &&
	     (lcd_speed == IXGBE_LINK_SPEED_10GB_FULL)))
		return status;

	/* Clear AN completed indication */
	status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_VENDOR_TX_ALARM,
				      IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
				      &autoneg_reg);

	if (status != IXGBE_SUCCESS)
		return status;

	status = hw->phy.ops.read_reg(hw, IXGBE_MII_10GBASE_T_AUTONEG_CTRL_REG,
			     IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
			     &an_10g_cntl_reg);

	if (status != IXGBE_SUCCESS)
		return status;

	status = hw->phy.ops.read_reg(hw,
			     IXGBE_MII_AUTONEG_VENDOR_PROVISION_1_REG,
			     IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
			     &autoneg_reg);

	if (status != IXGBE_SUCCESS)
		return status;

	save_autoneg = hw->phy.autoneg_advertised;

	/* Setup link at least common link speed */
	status = hw->mac.ops.setup_link(hw, lcd_speed, FALSE);

	/* restore autoneg from before setting lplu speed */
	hw->phy.autoneg_advertised = save_autoneg;

	return status;
}

/**
 * ixgbe_get_lcd_x550em - Determine lowest common denominator
 *  @hw: pointer to hardware structure
 *  @lcd_speed: pointer to lowest common link speed
 *
 * Determine lowest common link speed with link partner.
 **/
s32 ixgbe_get_lcd_t_x550em(struct ixgbe_hw *hw, ixgbe_link_speed *lcd_speed)
{
	u16 an_lp_status;
	s32 status;
	u16 word = hw->eeprom.ctrl_word_3;

	*lcd_speed = IXGBE_LINK_SPEED_UNKNOWN;

	status = hw->phy.ops.read_reg(hw, IXGBE_AUTO_NEG_LP_STATUS,
				      IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
				      &an_lp_status);

	if (status != IXGBE_SUCCESS)
		return status;

	/* If link partner advertised 1G, return 1G */
	if (an_lp_status & IXGBE_AUTO_NEG_LP_1000BASE_CAP) {
		*lcd_speed = IXGBE_LINK_SPEED_1GB_FULL;
		return status;
	}

	/* If 10G disabled for LPLU via NVM D10GMP, then return no valid LCD */
	if ((hw->bus.lan_id && (word & NVM_INIT_CTRL_3_D10GMP_PORT1)) ||
	    (word & NVM_INIT_CTRL_3_D10GMP_PORT0))
		return status;

	/* Link partner not capable of lower speeds, return 10G */
	*lcd_speed = IXGBE_LINK_SPEED_10GB_FULL;
	return status;
}

/**
 *  ixgbe_setup_fc_X550em - Set up flow control
 *  @hw: pointer to hardware structure
 *
 *  Called at init time to set up flow control.
 **/
s32 ixgbe_setup_fc_X550em(struct ixgbe_hw *hw)
{
	s32 ret_val = IXGBE_SUCCESS;
	u32 pause, asm_dir, reg_val;

	DEBUGFUNC("ixgbe_setup_fc_X550em");

	/* Validate the requested mode */
	if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
		ERROR_REPORT1(IXGBE_ERROR_UNSUPPORTED,
			"ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
		ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
		goto out;
	}

	/* 10gig parts do not have a word in the EEPROM to determine the
	 * default flow control setting, so we explicitly set it to full.
	 */
	if (hw->fc.requested_mode == ixgbe_fc_default)
		hw->fc.requested_mode = ixgbe_fc_full;

	/* Determine PAUSE and ASM_DIR bits. */
	switch (hw->fc.requested_mode) {
	case ixgbe_fc_none:
		pause = 0;
		asm_dir = 0;
		break;
	case ixgbe_fc_tx_pause:
		pause = 0;
		asm_dir = 1;
		break;
	case ixgbe_fc_rx_pause:
		/* Rx Flow control is enabled and Tx Flow control is
		 * disabled by software override. 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, as such we fall
		 * through to the fc_full statement.  Later, we will
		 * disable the adapter's ability to send PAUSE frames.
		 */
	case ixgbe_fc_full:
		pause = 1;
		asm_dir = 1;
		break;
	default:
		ERROR_REPORT1(IXGBE_ERROR_ARGUMENT,
			"Flow control param set incorrectly\n");
		ret_val = IXGBE_ERR_CONFIG;
		goto out;
	}

	switch (hw->device_id) {
	case IXGBE_DEV_ID_X550EM_X_KR:
	case IXGBE_DEV_ID_X550EM_A_KR:
	case IXGBE_DEV_ID_X550EM_A_KR_L:
		ret_val = hw->mac.ops.read_iosf_sb_reg(hw,
			IXGBE_KRM_AN_CNTL_1(hw->bus.lan_id),
			IXGBE_SB_IOSF_TARGET_KR_PHY, &reg_val);
		if (ret_val != IXGBE_SUCCESS)
			goto out;
		reg_val &= ~(IXGBE_KRM_AN_CNTL_1_SYM_PAUSE |
			IXGBE_KRM_AN_CNTL_1_ASM_PAUSE);
		if (pause)
			reg_val |= IXGBE_KRM_AN_CNTL_1_SYM_PAUSE;
		if (asm_dir)
			reg_val |= IXGBE_KRM_AN_CNTL_1_ASM_PAUSE;
		ret_val = hw->mac.ops.write_iosf_sb_reg(hw,
			IXGBE_KRM_AN_CNTL_1(hw->bus.lan_id),
			IXGBE_SB_IOSF_TARGET_KR_PHY, reg_val);

		/* This device does not fully support AN. */
		hw->fc.disable_fc_autoneg = TRUE;
		break;
	case IXGBE_DEV_ID_X550EM_X_XFI:
		hw->fc.disable_fc_autoneg = TRUE;
		break;
	default:
		break;
	}

out:
	return ret_val;
}

/**
 *  ixgbe_fc_autoneg_backplane_x550em_a - Enable flow control IEEE clause 37
 *  @hw: pointer to hardware structure
 *
 *  Enable flow control according to IEEE clause 37.
 **/
void ixgbe_fc_autoneg_backplane_x550em_a(struct ixgbe_hw *hw)
{
	u32 link_s1, lp_an_page_low, an_cntl_1;
	s32 status = IXGBE_ERR_FC_NOT_NEGOTIATED;
	ixgbe_link_speed speed;
	bool link_up;

	/* AN should have completed when the cable was plugged in.
	 * Look for reasons to bail out.  Bail out if:
	 * - FC autoneg is disabled, or if
	 * - link is not up.
	 */
	if (hw->fc.disable_fc_autoneg) {
		ERROR_REPORT1(IXGBE_ERROR_UNSUPPORTED,
			     "Flow control autoneg is disabled");
		goto out;
	}

	hw->mac.ops.check_link(hw, &speed, &link_up, FALSE);
	if (!link_up) {
		ERROR_REPORT1(IXGBE_ERROR_SOFTWARE, "The link is down");
		goto out;
	}

	/* Check at auto-negotiation has completed */
	status = hw->mac.ops.read_iosf_sb_reg(hw,
					IXGBE_KRM_LINK_S1(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, &link_s1);

	if (status != IXGBE_SUCCESS ||
	    (link_s1 & IXGBE_KRM_LINK_S1_MAC_AN_COMPLETE) == 0) {
		DEBUGOUT("Auto-Negotiation did not complete\n");
		status = IXGBE_ERR_FC_NOT_NEGOTIATED;
		goto out;
	}

	/* Read the 10g AN autoc and LP ability registers and resolve
	 * local flow control settings accordingly
	 */
	status = hw->mac.ops.read_iosf_sb_reg(hw,
				IXGBE_KRM_AN_CNTL_1(hw->bus.lan_id),
				IXGBE_SB_IOSF_TARGET_KR_PHY, &an_cntl_1);

	if (status != IXGBE_SUCCESS) {
		DEBUGOUT("Auto-Negotiation did not complete\n");
		goto out;
	}

	status = hw->mac.ops.read_iosf_sb_reg(hw,
				IXGBE_KRM_LP_BASE_PAGE_HIGH(hw->bus.lan_id),
				IXGBE_SB_IOSF_TARGET_KR_PHY, &lp_an_page_low);

	if (status != IXGBE_SUCCESS) {
		DEBUGOUT("Auto-Negotiation did not complete\n");
		goto out;
	}

	status = ixgbe_negotiate_fc(hw, an_cntl_1, lp_an_page_low,
				    IXGBE_KRM_AN_CNTL_1_SYM_PAUSE,
				    IXGBE_KRM_AN_CNTL_1_ASM_PAUSE,
				    IXGBE_KRM_LP_BASE_PAGE_HIGH_SYM_PAUSE,
				    IXGBE_KRM_LP_BASE_PAGE_HIGH_ASM_PAUSE);

out:
	if (status == IXGBE_SUCCESS) {
		hw->fc.fc_was_autonegged = TRUE;
	} else {
		hw->fc.fc_was_autonegged = FALSE;
		hw->fc.current_mode = hw->fc.requested_mode;
	}
}

/**
 *  ixgbe_fc_autoneg_fiber_x550em_a - passthrough FC settings
 *  @hw: pointer to hardware structure
 *
 **/
void ixgbe_fc_autoneg_fiber_x550em_a(struct ixgbe_hw *hw)
{
	hw->fc.fc_was_autonegged = FALSE;
	hw->fc.current_mode = hw->fc.requested_mode;
}

/**
 *  ixgbe_fc_autoneg_sgmii_x550em_a - Enable flow control IEEE clause 37
 *  @hw: pointer to hardware structure
 *
 *  Enable flow control according to IEEE clause 37.
 **/
void ixgbe_fc_autoneg_sgmii_x550em_a(struct ixgbe_hw *hw)
{
	s32 status = IXGBE_ERR_FC_NOT_NEGOTIATED;
	u32 info[FW_PHY_ACT_DATA_COUNT] = { 0 };
	ixgbe_link_speed speed;
	bool link_up;

	/* AN should have completed when the cable was plugged in.
	 * Look for reasons to bail out.  Bail out if:
	 * - FC autoneg is disabled, or if
	 * - link is not up.
	 */
	if (hw->fc.disable_fc_autoneg) {
		ERROR_REPORT1(IXGBE_ERROR_UNSUPPORTED,
			     "Flow control autoneg is disabled");
		goto out;
	}

	hw->mac.ops.check_link(hw, &speed, &link_up, FALSE);
	if (!link_up) {
		ERROR_REPORT1(IXGBE_ERROR_SOFTWARE, "The link is down");
		goto out;
	}

	/* Check if auto-negotiation has completed */
	status = ixgbe_fw_phy_activity(hw, FW_PHY_ACT_GET_LINK_INFO, &info);
	if (status != IXGBE_SUCCESS ||
	    !(info[0] & FW_PHY_ACT_GET_LINK_INFO_AN_COMPLETE)) {
		DEBUGOUT("Auto-Negotiation did not complete\n");
		status = IXGBE_ERR_FC_NOT_NEGOTIATED;
		goto out;
	}

	/* Negotiate the flow control */
	status = ixgbe_negotiate_fc(hw, info[0], info[0],
				    FW_PHY_ACT_GET_LINK_INFO_FC_RX,
				    FW_PHY_ACT_GET_LINK_INFO_FC_TX,
				    FW_PHY_ACT_GET_LINK_INFO_LP_FC_RX,
				    FW_PHY_ACT_GET_LINK_INFO_LP_FC_TX);

out:
	if (status == IXGBE_SUCCESS) {
		hw->fc.fc_was_autonegged = TRUE;
	} else {
		hw->fc.fc_was_autonegged = FALSE;
		hw->fc.current_mode = hw->fc.requested_mode;
	}
}

/**
 *  ixgbe_setup_fc_backplane_x550em_a - Set up flow control
 *  @hw: pointer to hardware structure
 *
 *  Called at init time to set up flow control.
 **/
s32 ixgbe_setup_fc_backplane_x550em_a(struct ixgbe_hw *hw)
{
	s32 status = IXGBE_SUCCESS;
	u32 an_cntl = 0;

	DEBUGFUNC("ixgbe_setup_fc_backplane_x550em_a");

	/* Validate the requested mode */
	if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
		ERROR_REPORT1(IXGBE_ERROR_UNSUPPORTED,
			      "ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
		return IXGBE_ERR_INVALID_LINK_SETTINGS;
	}

	if (hw->fc.requested_mode == ixgbe_fc_default)
		hw->fc.requested_mode = ixgbe_fc_full;

	/* Set up the 1G and 10G flow control advertisement registers so the
	 * HW will be able to do FC autoneg once the cable is plugged in.  If
	 * we link at 10G, the 1G advertisement is harmless and vice versa.
	 */
	status = hw->mac.ops.read_iosf_sb_reg(hw,
					IXGBE_KRM_AN_CNTL_1(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, &an_cntl);

	if (status != IXGBE_SUCCESS) {
		DEBUGOUT("Auto-Negotiation did not complete\n");
		return status;
	}

	/* The possible values of fc.requested_mode 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: Invalid.
	 */
	switch (hw->fc.requested_mode) {
	case ixgbe_fc_none:
		/* Flow control completely disabled by software override. */
		an_cntl &= ~(IXGBE_KRM_AN_CNTL_1_SYM_PAUSE |
			     IXGBE_KRM_AN_CNTL_1_ASM_PAUSE);
		break;
	case ixgbe_fc_tx_pause:
		/* Tx Flow control is enabled, and Rx Flow control is
		 * disabled by software override.
		 */
		an_cntl |= IXGBE_KRM_AN_CNTL_1_ASM_PAUSE;
		an_cntl &= ~IXGBE_KRM_AN_CNTL_1_SYM_PAUSE;
		break;
	case ixgbe_fc_rx_pause:
		/* Rx Flow control is enabled and Tx Flow control is
		 * disabled by software override. 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, as such we fall
		 * through to the fc_full statement.  Later, we will
		 * disable the adapter's ability to send PAUSE frames.
		 */
	case ixgbe_fc_full:
		/* Flow control (both Rx and Tx) is enabled by SW override. */
		an_cntl |= IXGBE_KRM_AN_CNTL_1_SYM_PAUSE |
			   IXGBE_KRM_AN_CNTL_1_ASM_PAUSE;
		break;
	default:
		ERROR_REPORT1(IXGBE_ERROR_ARGUMENT,
			      "Flow control param set incorrectly\n");
		return IXGBE_ERR_CONFIG;
	}

	status = hw->mac.ops.write_iosf_sb_reg(hw,
					IXGBE_KRM_AN_CNTL_1(hw->bus.lan_id),
					IXGBE_SB_IOSF_TARGET_KR_PHY, an_cntl);

	/* Restart auto-negotiation. */
	status = ixgbe_restart_an_internal_phy_x550em(hw);

	return status;
}

/**
 * ixgbe_set_mux - Set mux for port 1 access with CS4227
 * @hw: pointer to hardware structure
 * @state: set mux if 1, clear if 0
 */
static void ixgbe_set_mux(struct ixgbe_hw *hw, u8 state)
{
	u32 esdp;

	if (!hw->bus.lan_id)
		return;
	esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
	if (state)
		esdp |= IXGBE_ESDP_SDP1;
	else
		esdp &= ~IXGBE_ESDP_SDP1;
	IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
	IXGBE_WRITE_FLUSH(hw);
}

/**
 *  ixgbe_acquire_swfw_sync_X550em - Acquire SWFW semaphore
 *  @hw: pointer to hardware structure
 *  @mask: Mask to specify which semaphore to acquire
 *
 *  Acquires the SWFW semaphore and sets the I2C MUX
 **/
s32 ixgbe_acquire_swfw_sync_X550em(struct ixgbe_hw *hw, u32 mask)
{
	s32 status;

	DEBUGFUNC("ixgbe_acquire_swfw_sync_X550em");

	status = ixgbe_acquire_swfw_sync_X540(hw, mask);
	if (status)
		return status;

	if (mask & IXGBE_GSSR_I2C_MASK)
		ixgbe_set_mux(hw, 1);

	return IXGBE_SUCCESS;
}

/**
 *  ixgbe_release_swfw_sync_X550em - Release SWFW semaphore
 *  @hw: pointer to hardware structure
 *  @mask: Mask to specify which semaphore to release
 *
 *  Releases the SWFW semaphore and sets the I2C MUX
 **/
void ixgbe_release_swfw_sync_X550em(struct ixgbe_hw *hw, u32 mask)
{
	DEBUGFUNC("ixgbe_release_swfw_sync_X550em");

	if (mask & IXGBE_GSSR_I2C_MASK)
		ixgbe_set_mux(hw, 0);

	ixgbe_release_swfw_sync_X540(hw, mask);
}

/**
 *  ixgbe_acquire_swfw_sync_X550a - Acquire SWFW semaphore
 *  @hw: pointer to hardware structure
 *  @mask: Mask to specify which semaphore to acquire
 *
 *  Acquires the SWFW semaphore and get the shared phy token as needed
 */
static s32 ixgbe_acquire_swfw_sync_X550a(struct ixgbe_hw *hw, u32 mask)
{
	u32 hmask = mask & ~IXGBE_GSSR_TOKEN_SM;
	int retries = FW_PHY_TOKEN_RETRIES;
	s32 status = IXGBE_SUCCESS;

	DEBUGFUNC("ixgbe_acquire_swfw_sync_X550a");

	while (--retries) {
		status = IXGBE_SUCCESS;
		if (hmask)
			status = ixgbe_acquire_swfw_sync_X540(hw, hmask);
		if (status) {
			DEBUGOUT1("Could not acquire SWFW semaphore, Status = %d\n",
				  status);
			return status;
		}
		if (!(mask & IXGBE_GSSR_TOKEN_SM))
			return IXGBE_SUCCESS;

		status = ixgbe_get_phy_token(hw);
		if (status == IXGBE_ERR_TOKEN_RETRY)
			DEBUGOUT1("Could not acquire PHY token, Status = %d\n",
				  status);

		if (status == IXGBE_SUCCESS)
			return IXGBE_SUCCESS;

		if (hmask)
			ixgbe_release_swfw_sync_X540(hw, hmask);

		if (status != IXGBE_ERR_TOKEN_RETRY) {
			DEBUGOUT1("Unable to retry acquiring the PHY token, Status = %d\n",
				  status);
			return status;
		}
	}

	DEBUGOUT1("Semaphore acquisition retries failed!: PHY ID = 0x%08X\n",
		  hw->phy.id);
	return status;
}

/**
 *  ixgbe_release_swfw_sync_X550a - Release SWFW semaphore
 *  @hw: pointer to hardware structure
 *  @mask: Mask to specify which semaphore to release
 *
 *  Releases the SWFW semaphore and puts the shared phy token as needed
 */
static void ixgbe_release_swfw_sync_X550a(struct ixgbe_hw *hw, u32 mask)
{
	u32 hmask = mask & ~IXGBE_GSSR_TOKEN_SM;

	DEBUGFUNC("ixgbe_release_swfw_sync_X550a");

	if (mask & IXGBE_GSSR_TOKEN_SM)
		ixgbe_put_phy_token(hw);

	if (hmask)
		ixgbe_release_swfw_sync_X540(hw, hmask);
}

/**
 *  ixgbe_read_phy_reg_x550a  - Reads specified PHY register
 *  @hw: pointer to hardware structure
 *  @reg_addr: 32 bit address of PHY register to read
 *  @phy_data: Pointer to read data from PHY register
 *
 *  Reads a value from a specified PHY register using the SWFW lock and PHY
 *  Token. The PHY Token is needed since the MDIO is shared between to MAC
 *  instances.
 **/
s32 ixgbe_read_phy_reg_x550a(struct ixgbe_hw *hw, u32 reg_addr,
			       u32 device_type, u16 *phy_data)
{
	s32 status;
	u32 mask = hw->phy.phy_semaphore_mask | IXGBE_GSSR_TOKEN_SM;

	DEBUGFUNC("ixgbe_read_phy_reg_x550a");

	if (hw->mac.ops.acquire_swfw_sync(hw, mask))
		return IXGBE_ERR_SWFW_SYNC;

	status = hw->phy.ops.read_reg_mdi(hw, reg_addr, device_type, phy_data);

	hw->mac.ops.release_swfw_sync(hw, mask);

	return status;
}

/**
 *  ixgbe_write_phy_reg_x550a - Writes specified PHY register
 *  @hw: pointer to hardware structure
 *  @reg_addr: 32 bit PHY register to write
 *  @device_type: 5 bit device type
 *  @phy_data: Data to write to the PHY register
 *
 *  Writes a value to specified PHY register using the SWFW lock and PHY Token.
 *  The PHY Token is needed since the MDIO is shared between to MAC instances.
 **/
s32 ixgbe_write_phy_reg_x550a(struct ixgbe_hw *hw, u32 reg_addr,
				u32 device_type, u16 phy_data)
{
	s32 status;
	u32 mask = hw->phy.phy_semaphore_mask | IXGBE_GSSR_TOKEN_SM;

	DEBUGFUNC("ixgbe_write_phy_reg_x550a");

	if (hw->mac.ops.acquire_swfw_sync(hw, mask) == IXGBE_SUCCESS) {
		status = hw->phy.ops.write_reg_mdi(hw, reg_addr, device_type,
						 phy_data);
		hw->mac.ops.release_swfw_sync(hw, mask);
	} else {
		status = IXGBE_ERR_SWFW_SYNC;
	}

	return status;
}

/**
 * ixgbe_handle_lasi_ext_t_x550em - Handle external Base T PHY interrupt
 * @hw: pointer to hardware structure
 *
 * Handle external Base T PHY interrupt. If high temperature
 * failure alarm then return error, else if link status change
 * then setup internal/external PHY link
 *
 * Return IXGBE_ERR_OVERTEMP if interrupt is high temperature
 * failure alarm, else return PHY access status.
 */
s32 ixgbe_handle_lasi_ext_t_x550em(struct ixgbe_hw *hw)
{
	bool lsc;
	u32 status;

	status = ixgbe_get_lasi_ext_t_x550em(hw, &lsc);

	if (status != IXGBE_SUCCESS)
		return status;

	if (lsc)
		return ixgbe_setup_internal_phy(hw);

	return IXGBE_SUCCESS;
}

/**
 * ixgbe_setup_mac_link_t_X550em - Sets the auto advertised link speed
 * @hw: pointer to hardware structure
 * @speed: new link speed
 * @autoneg_wait_to_complete: TRUE when waiting for completion is needed
 *
 * Setup internal/external PHY link speed based on link speed, then set
 * external PHY auto advertised link speed.
 *
 * Returns error status for any failure
 **/
s32 ixgbe_setup_mac_link_t_X550em(struct ixgbe_hw *hw,
				  ixgbe_link_speed speed,
				  bool autoneg_wait_to_complete)
{
	s32 status;
	ixgbe_link_speed force_speed;

	DEBUGFUNC("ixgbe_setup_mac_link_t_X550em");

	/* Setup internal/external PHY link speed to iXFI (10G), unless
	 * only 1G is auto advertised then setup KX link.
	 */
	if (speed & IXGBE_LINK_SPEED_10GB_FULL)
		force_speed = IXGBE_LINK_SPEED_10GB_FULL;
	else
		force_speed = IXGBE_LINK_SPEED_1GB_FULL;

	/* If X552 and internal link mode is XFI, then setup XFI internal link.
	 */
	if (hw->mac.type == ixgbe_mac_X550EM_x &&
	    !(hw->phy.nw_mng_if_sel & IXGBE_NW_MNG_IF_SEL_INT_PHY_MODE)) {
		status = ixgbe_setup_ixfi_x550em(hw, &force_speed);

		if (status != IXGBE_SUCCESS)
			return status;
	}

	return hw->phy.ops.setup_link_speed(hw, speed, autoneg_wait_to_complete);
}

/**
 * ixgbe_check_link_t_X550em - Determine link and speed status
 * @hw: pointer to hardware structure
 * @speed: pointer to link speed
 * @link_up: TRUE when link is up
 * @link_up_wait_to_complete: bool used to wait for link up or not
 *
 * Check that both the MAC and X557 external PHY have link.
 **/
s32 ixgbe_check_link_t_X550em(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
			      bool *link_up, bool link_up_wait_to_complete)
{
	u32 status;
	u16 i, autoneg_status = 0;

	if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_copper)
		return IXGBE_ERR_CONFIG;

	status = ixgbe_check_mac_link_generic(hw, speed, link_up,
					      link_up_wait_to_complete);

	/* If check link fails or MAC link is not up, then return */
	if (status != IXGBE_SUCCESS || !(*link_up))
		return status;

	/* MAC link is up, so check external PHY link.
	 * X557 PHY. Link status is latching low, and can only be used to detect
	 * link drop, and not the current status of the link without performing
	 * back-to-back reads.
	 */
	for (i = 0; i < 2; i++) {
		status = hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_STATUS,
				      IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
				      &autoneg_status);

		if (status != IXGBE_SUCCESS)
			return status;
	}

	/* If external PHY link is not up, then indicate link not up */
	if (!(autoneg_status & IXGBE_MDIO_AUTO_NEG_LINK_STATUS))
		*link_up = FALSE;

	return IXGBE_SUCCESS;
}

/**
 *  ixgbe_reset_phy_t_X550em - Performs X557 PHY reset and enables LASI
 *  @hw: pointer to hardware structure
 **/
s32 ixgbe_reset_phy_t_X550em(struct ixgbe_hw *hw)
{
	s32 status;

	status = ixgbe_reset_phy_generic(hw);

	if (status != IXGBE_SUCCESS)
		return status;

	/* Configure Link Status Alarm and Temperature Threshold interrupts */
	return ixgbe_enable_lasi_ext_t_x550em(hw);
}

/**
 *  ixgbe_led_on_t_X550em - Turns on the software controllable LEDs.
 *  @hw: pointer to hardware structure
 *  @led_idx: led number to turn on
 **/
s32 ixgbe_led_on_t_X550em(struct ixgbe_hw *hw, u32 led_idx)
{
	u16 phy_data;

	DEBUGFUNC("ixgbe_led_on_t_X550em");

	if (led_idx >= IXGBE_X557_MAX_LED_INDEX)
		return IXGBE_ERR_PARAM;

	/* To turn on the LED, set mode to ON. */
	ixgbe_read_phy_reg(hw, IXGBE_X557_LED_PROVISIONING + led_idx,
			   IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE, &phy_data);
	phy_data |= IXGBE_X557_LED_MANUAL_SET_MASK;
	ixgbe_write_phy_reg(hw, IXGBE_X557_LED_PROVISIONING + led_idx,
			    IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE, phy_data);

	/* Some designs have the LEDs wired to the MAC */
	return ixgbe_led_on_generic(hw, led_idx);
}

/**
 *  ixgbe_led_off_t_X550em - Turns off the software controllable LEDs.
 *  @hw: pointer to hardware structure
 *  @led_idx: led number to turn off
 **/
s32 ixgbe_led_off_t_X550em(struct ixgbe_hw *hw, u32 led_idx)
{
	u16 phy_data;

	DEBUGFUNC("ixgbe_led_off_t_X550em");

	if (led_idx >= IXGBE_X557_MAX_LED_INDEX)
		return IXGBE_ERR_PARAM;

	/* To turn on the LED, set mode to ON. */
	ixgbe_read_phy_reg(hw, IXGBE_X557_LED_PROVISIONING + led_idx,
			   IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE, &phy_data);
	phy_data &= ~IXGBE_X557_LED_MANUAL_SET_MASK;
	ixgbe_write_phy_reg(hw, IXGBE_X557_LED_PROVISIONING + led_idx,
			    IXGBE_MDIO_VENDOR_SPECIFIC_1_DEV_TYPE, phy_data);

	/* Some designs have the LEDs wired to the MAC */
	return ixgbe_led_off_generic(hw, led_idx);
}

/**
 *  ixgbe_set_fw_drv_ver_x550 - Sends driver version to firmware
 *  @hw: pointer to the HW structure
 *  @maj: driver version major number
 *  @min: driver version minor number
 *  @build: driver version build number
 *  @sub: driver version sub build number
 *  @len: length of driver_ver string
 *  @driver_ver: driver string
 *
 *  Sends driver version number to firmware through the manageability
 *  block.  On success return IXGBE_SUCCESS
 *  else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring
 *  semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails.
 **/
s32 ixgbe_set_fw_drv_ver_x550(struct ixgbe_hw *hw, u8 maj, u8 min,
			      u8 build, u8 sub, u16 len, const char *driver_ver)
{
	struct ixgbe_hic_drv_info2 fw_cmd;
	s32 ret_val = IXGBE_SUCCESS;
	int i;

	DEBUGFUNC("ixgbe_set_fw_drv_ver_x550");

	if ((len == 0) || (driver_ver == NULL) ||
	   (len > sizeof(fw_cmd.driver_string)))
		return IXGBE_ERR_INVALID_ARGUMENT;

	fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO;
	fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN + len;
	fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED;
	fw_cmd.port_num = (u8)hw->bus.func;
	fw_cmd.ver_maj = maj;
	fw_cmd.ver_min = min;
	fw_cmd.ver_build = build;
	fw_cmd.ver_sub = sub;
	fw_cmd.hdr.checksum = 0;
	memcpy(fw_cmd.driver_string, driver_ver, len);
	fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
				(FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));

	for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) {
		ret_val = ixgbe_host_interface_command(hw, (u32 *)&fw_cmd,
						       sizeof(fw_cmd),
						       IXGBE_HI_COMMAND_TIMEOUT,
						       TRUE);
		if (ret_val != IXGBE_SUCCESS)
			continue;

		if (fw_cmd.hdr.cmd_or_resp.ret_status ==
		    FW_CEM_RESP_STATUS_SUCCESS)
			ret_val = IXGBE_SUCCESS;
		else
			ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;

		break;
	}

	return ret_val;
}