uboot-vybrid_public/cpu/ixp/npe/include/IxEthMii.h

/**
 * @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
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Intel Corporation nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 * 
 * @par
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * @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 */
/**
 *@}
 */