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/*
* Copyright (c) 2013 - 2014, Freescale Semiconductor, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* o 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.
*
* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 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 HOLDER 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.
*/
#include "fsl_phy_driver.h"
#ifndef MBED_NO_ENET
/*******************************************************************************
* Variables
******************************************************************************/
/*! @brief Define Phy API structure for MAC application*/
const enet_phy_api_t g_enetPhyApi =
{
phy_auto_discover,
phy_init,
phy_get_link_speed,
phy_get_link_status,
phy_get_link_duplex,
};
/*******************************************************************************
* Code
******************************************************************************/
/*FUNCTION****************************************************************
*
* Function Name: phy_init
* Return Value: The execution status.
* Description: Initialize Phy.
* This interface provides initialize functions for Phy, This is called by enet
* initialize function. Phy is usually deault auto-negotiation. so there is no
* need to do the intialize about this. we just need to check the loop mode.
*END*********************************************************************/
uint32_t phy_init(enet_dev_if_t * enetIfPtr)
{
uint32_t data;
uint32_t counter;
uint32_t result;
/* Check input parameters*/
if (!enetIfPtr)
{
return kStatus_PHY_InvaildInput;
}
/* Reset Phy*/
if ((result = (enetIfPtr->macApiPtr->enet_mii_read(enetIfPtr->deviceNumber,
enetIfPtr->phyCfgPtr->phyAddr,kEnetPhySR,&data))) == kStatus_PHY_Success)
{
if ((data & kEnetPhyAutoNegAble) != 0)
{
/* Set Autonegotiation*/
enetIfPtr->macApiPtr->enet_mii_write(enetIfPtr->deviceNumber,
enetIfPtr->phyCfgPtr->phyAddr, kEnetPhyCR, kEnetPhyAutoNeg);
for (counter = 0; counter < kPhyTimeout; counter++)
{
if (enetIfPtr->macApiPtr->enet_mii_read(enetIfPtr->deviceNumber,
enetIfPtr->phyCfgPtr->phyAddr,kEnetPhySR,&data)== kStatus_PHY_Success)
{
if ((data & kEnetPhyAutoNegComplete) != 0)
{
break;
}
}
}
if (counter == kPhyTimeout)
{
return kStatus_PHY_TimeOut;
}
}
}
if (enetIfPtr->phyCfgPtr->isLoopEnabled)
{
/* First read the current status in control register*/
if (enetIfPtr->macApiPtr->enet_mii_read(enetIfPtr->deviceNumber,
enetIfPtr->phyCfgPtr->phyAddr,kEnetPhyCR,&data))
{
result = enetIfPtr->macApiPtr->enet_mii_write(enetIfPtr->deviceNumber,
enetIfPtr->phyCfgPtr->phyAddr,kEnetPhyCR,(data|kEnetPhyLoop));
}
}
return result;
}
/*FUNCTION****************************************************************
*
* Function Name: phy_auto_discover
* Return Value: The execution status.
* Description: Phy address auto discover.
* This function provides a interface to get phy address using phy address auto
* discovering, this interface is used when the phy address is unknown.
*END*********************************************************************/
uint32_t phy_auto_discover(enet_dev_if_t * enetIfPtr)
{
uint32_t addrIdx,data;
uint32_t result = kStatus_PHY_Fail;
/* Check input parameters*/
if (!enetIfPtr)
{
return kStatus_PHY_InvaildInput;
}
for (addrIdx = 0; addrIdx < 32; addrIdx++)
{
enetIfPtr->phyCfgPtr->phyAddr = addrIdx;
result = enetIfPtr->macApiPtr->enet_mii_read(enetIfPtr->deviceNumber,
enetIfPtr->phyCfgPtr->phyAddr,kEnetPhyId1,&data);
if ((result == kStatus_PHY_Success) && (data != 0) && (data != 0xffff) )
{
return kStatus_PHY_Success;
}
}
return result;
}
/*FUNCTION****************************************************************
*
* Function Name: phy_get_link_speed
* Return Value: The execution status.
* Description: Get phy link speed.
* This function provides a interface to get link speed.
*END*********************************************************************/
uint32_t phy_get_link_speed(enet_dev_if_t * enetIfPtr, enet_phy_speed_t *status)
{
uint32_t result = kStatus_PHY_Success;
uint32_t data;
/* Check input parameters*/
if ((!enetIfPtr) || (!status))
{
return kStatus_PHY_InvaildInput;
}
result = enetIfPtr->macApiPtr->enet_mii_read(enetIfPtr->deviceNumber,
enetIfPtr->phyCfgPtr->phyAddr, kEnetPhyCt2,&data);
if (result == kStatus_PHY_Success)
{
data &= kEnetPhySpeedDulpexMask;
if ((kEnetPhy100HalfDuplex == data) || (kEnetPhy100FullDuplex == data))
{
*status = kEnetSpeed100M;
}
else
{
*status = kEnetSpeed10M;
}
}
return result;
}
/*FUNCTION****************************************************************
*
* Function Name: phy_get_link_status
* Return Value: The execution status.
* Description: Get phy link status.
* This function provides a interface to get link status to see if the link
* status is on or off.
*END*********************************************************************/
uint32_t phy_get_link_status(enet_dev_if_t * enetIfPtr, bool *status)
{
uint32_t result = kStatus_PHY_Success;
uint32_t data;
/* Check input parameters*/
if ((!enetIfPtr) || (!status))
{
return kStatus_PHY_InvaildInput;
}
result = enetIfPtr->macApiPtr->enet_mii_read(enetIfPtr->deviceNumber,
enetIfPtr->phyCfgPtr->phyAddr,kEnetPhyCR,&data);
if ((result == kStatus_PHY_Success) && (!(data & kEnetPhyReset)))
{
data = 0;
result = enetIfPtr->macApiPtr->enet_mii_read(enetIfPtr->deviceNumber,
enetIfPtr->phyCfgPtr->phyAddr,kEnetPhySR, &data);
if (result == kStatus_PHY_Success)
{
if (!(kEnetPhyLinkStatus & data))
{
*status = false;
}
else
{
*status = true;
}
}
}
return result;
}
/*FUNCTION****************************************************************
*
* Function Name: phy_get_link_duplex
* Return Value: The execution status.
* Description: Get phy link duplex.
* This function provides a interface to get link duplex to see if the link
* duplex is full or half.
*END*********************************************************************/
uint32_t phy_get_link_duplex(enet_dev_if_t * enetIfPtr, enet_phy_duplex_t *status)
{
uint32_t result = kStatus_PHY_Success;
uint32_t data;
/* Check input parameters*/
if ((!enetIfPtr) || (!status))
{
return kStatus_PHY_InvaildInput;
}
result = enetIfPtr->macApiPtr->enet_mii_read(enetIfPtr->deviceNumber,
enetIfPtr->phyCfgPtr->phyAddr,kEnetPhyCt2,&data);
if (result == kStatus_PHY_Success)
{
data &= kEnetPhySpeedDulpexMask;
if ((kEnetPhy10FullDuplex == data) || (kEnetPhy100FullDuplex == data))
{
*status = kEnetFullDuplex;
}
else
{
*status = kEnetHalfDuplex;
}
}
return result;
}
#endif
/*******************************************************************************
* EOF
******************************************************************************/
|
