/**
 * @file    IxEthMii.h
 *
 * @brief this file contains the public API of @ref IxEthMii component
 *
 * Design notes :  
 * The main intent of this API is to inplement MII high level fonctionalitoes
 * to support the codelets provided with the IXP400 software releases. It 
 * superceedes previous interfaces provided with @ref IxEThAcc component.
 * 
 * This API has been tested with the PHYs provided with the
 * IXP400 development platforms. It may not work for specific Ethernet PHYs
 * used on specific boards.
 *
 * This source code detects and interface the LXT972, LXT973 and KS6995
 * Ethernet PHYs.
 *
 * This source code should be considered as an example which may need
 * to be adapted for different hardware implementations.
 *
 * It is strongly recommended to use public domain and GPL utilities
 * like libmii, mii-diag for MII interface support.
 * 
 *
 * 
 * @par
 * IXP400 SW Release version 2.0
 * 
 * -- Copyright Notice --
 * 
 * @par
 * Copyright 2001-2005, Intel Corporation.
 * All rights reserved.
 * 
 * @par
 * SPDX-License-Identifier:	BSD-3-Clause
 * @par
 * -- End of Copyright Notice --
 */

#ifndef IxEthMii_H
#define IxEthMii_H

#include <IxTypes.h>

/**
 * @defgroup IxEthMii IXP400 Ethernet Phy Access (IxEthMii) API
 *
 * @brief ethMii is a library that does provides access to the 
 * Ethernet PHYs
 *
 *@{
 */

/**
 * @ingroup IxEthMii
 *
 * @fn  ixEthMiiPhyScan(BOOL phyPresent[], UINT32 maxPhyCount)
 *
 * @brief Scan the MDIO bus for PHYs
 *  This function scans PHY addresses 0 through 31, and sets phyPresent[n] to 
 *  true if a phy is discovered at address n.
 *
 * - Reentrant    - no
 * - ISR Callable - no
 *
 * @pre The MAC on Ethernet Port 2 (NPE C) must be initialised, and generating the MDIO clock.
 *
 * @param phyPresent BOOL [in] - boolean array of IXP425_ETH_ACC_MII_MAX_ADDR entries
 * @param maxPhyCount UINT32 [in] - number of PHYs to search for (the scan will stop when
 *         the indicated number of PHYs is found).
 *
 * @return IX_STATUS
 * - IX_ETH_ACC_SUCCESS
 * - IX_ETH_ACC_FAIL : invalid arguments.
 *
 * <hr>
 */
PUBLIC IX_STATUS ixEthMiiPhyScan(BOOL phyPresent[], UINT32 maxPhyCount);

/**
 * @ingroup IxEthMii
 *
 * @fn ixEthMiiPhyConfig(UINT32 phyAddr,
		         BOOL speed100, 
			 BOOL fullDuplex, 
			 BOOL autonegotiate)
 *
 *
 * @brief Configure a PHY
 *   Configure a PHY's speed, duplex and autonegotiation status
 *
 * - Reentrant    - no
 * - ISR Callable - no
 *
 * @pre The MAC on Ethernet Port 2 (NPE C) must be initialised, and generating the MDIO clock.
 *   
 * @param phyAddr UINT32 [in] 
 * @param speed100 BOOL [in] - set to true for 100Mbit/s operation, false for 10Mbit/s
 * @param fullDuplex BOOL [in] - set to true for Full Duplex, false for Half Duplex
 * @param autonegotiate BOOL [in] - set to true to enable autonegotiation
 *
 * @return IX_STATUS
 * - IX_SUCCESS
 * - IX_FAIL : invalid arguments.
 *
 * <hr>
 */
PUBLIC IX_STATUS ixEthMiiPhyConfig(UINT32 phyAddr,
				    BOOL speed100, 
				    BOOL fullDuplex, 
				    BOOL autonegotiate);

/**
 * @ingroup IxEthMii
 *
 * @fn ixEthMiiPhyLoopbackEnable(UINT32 phyAddr)
 *
 *
 * @brief Enable PHY Loopback in a specific Eth MII port
 *
 * @note When PHY Loopback is enabled, frames sent out to the PHY from the
 * IXP400 will be looped back to the IXP400. They will not be transmitted out
 * on the wire.
 *
 * - Reentrant    - no
 * - ISR Callable - no
 *
 * @param phyAddr UINT32 [in] - the address of the Ethernet PHY (0-31)
 *
 * @return IX_STATUS
 * - IX_SUCCESS
 * - IX_FAIL : invalid arguments.
 * <hr>
 */
PUBLIC IX_STATUS
ixEthMiiPhyLoopbackEnable (UINT32 phyAddr);

/**
 * @ingroup IxEthMii
 *
 * @fn ixEthMiiPhyLoopbackDisable(UINT32 phyAddr)
 *
 *
 * @brief Disable PHY Loopback in a specific Eth MII port
 *
 * - Reentrant    - no
 * - ISR Callable - no
 *   
 * @param phyAddr UINT32 [in] - the address of the Ethernet PHY (0-31)
 *
 * @return IX_STATUS
 * - IX_SUCCESS
 * - IX_FAIL : invalid arguments.
 * <hr>
 */
PUBLIC IX_STATUS
ixEthMiiPhyLoopbackDisable (UINT32 phyAddr);

/**
 * @ingroup IxEthMii
 *
 * @fn ixEthMiiPhyReset(UINT32 phyAddr)
 *
 * @brief Reset a PHY
 *   Reset a PHY
 *
 * - Reentrant    - no
 * - ISR Callable - no
 *
 * @pre The MAC on Ethernet Port 2 (NPE C) must be initialised, and generating the MDIO clock.
 *   
 * @param phyAddr UINT32 [in] - the address of the Ethernet PHY (0-31)
 *
 * @return IX_STATUS
 * - IX_SUCCESS
 * - IX_FAIL : invalid arguments.
 *
 * <hr>
 */
PUBLIC IX_STATUS ixEthMiiPhyReset(UINT32 phyAddr);


/**
 * @ingroup IxEthMii
 *
 * @fn ixEthMiiLinkStatus(UINT32 phyAddr, 
			  BOOL *linkUp,
			  BOOL *speed100, 
			  BOOL *fullDuplex,
		          BOOL *autoneg)
 *
 * @brief Retrieve the current status of a PHY
 *   Retrieve the link, speed, duplex and autonegotiation status of a PHY
 *
 * - Reentrant    - no
 * - ISR Callable - no
 *
 * @pre The MAC on Ethernet Port 2 (NPE C) must be initialised, and generating the MDIO clock.
 *   
 * @param phyAddr UINT32 [in] - the address of the Ethernet PHY (0-31)
 * @param linkUp BOOL [out] - set to true if the link is up
 * @param speed100 BOOL [out] - set to true indicates 100Mbit/s, false indicates 10Mbit/s
 * @param fullDuplex BOOL [out] - set to true indicates Full Duplex, false indicates Half Duplex
 * @param autoneg BOOL [out] - set to true indicates autonegotiation is enabled, false indicates autonegotiation is disabled
 *
 * @return IX_STATUS
 * - IX_SUCCESS
 * - IX_FAIL : invalid arguments.
 *
 * <hr>
 */
PUBLIC IX_STATUS ixEthMiiLinkStatus(UINT32 phyAddr, 
				     BOOL *linkUp,
				     BOOL *speed100, 
				     BOOL *fullDuplex,
				     BOOL *autoneg);

/**
 * @ingroup IxEthMii
 *
 * @fn ixEthMiiPhyShow (UINT32 phyAddr)
 *
 *
 * @brief Display information on a specified PHY
 *   Display link status, speed, duplex and Auto Negotiation status
 *
 * - Reentrant    - no
 * - ISR Callable - no
 *
 * @pre The MAC on Ethernet Port 2 (NPE C) must be initialised, and generating the MDIO clock.
 *   
 * @param phyAddr UINT32 [in] - the address of the Ethernet PHY (0-31)
 *
 * @return IX_STATUS
 * - IX_SUCCESS
 * - IX_FAIL : invalid arguments.
 *
 * <hr>
 */
PUBLIC IX_STATUS ixEthMiiPhyShow (UINT32 phyAddr);

#endif /* ndef IxEthMii_H */
/**
 *@}
 */