470 lines
16 KiB
C
470 lines
16 KiB
C
/*
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* Copyright (c) 2013 - 2014, Freescale Semiconductor, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o Neither the name of Freescale Semiconductor, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Modified by mbed for the lwIP port */
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#include "fsl_enet_driver.h"
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#include "fsl_enet_hal.h"
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#include "fsl_clock_manager.h"
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#include "fsl_interrupt_manager.h"
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#include <string.h>
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#include "sys_arch.h"
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/*******************************************************************************
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* Variables
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******************************************************************************/
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/*! @brief Define ENET's IRQ list */
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void *enetIfHandle;
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/*! @brief Define MAC driver API structure and for application of stack adaptor layer*/
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const enet_mac_api_t g_enetMacApi =
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{
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enet_mac_init,
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NULL, // enet_mac_deinit,
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NULL, // enet_mac_send,
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#if !ENET_RECEIVE_ALL_INTERRUPT
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NULL, // enet_mac_receive,
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#endif
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enet_mii_read,
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enet_mii_write,
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NULL, // enet_mac_add_multicast_group,
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NULL, //enet_mac_leave_multicast_group,
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};
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/*******************************************************************************
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* Code
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******************************************************************************/
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// NOTE: we need these functions to be non-blocking fpr the PHY task, hence the
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// osDelay() below
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/*FUNCTION****************************************************************
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*
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* Function Name: enet_mii_read
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* Return Value: The execution status.
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* Description: Read function.
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* This interface read data over the (R)MII bus from the specified PHY register,
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* This function is called by all PHY interfaces.
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*END*********************************************************************/
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uint32_t enet_mii_read(uint32_t instance, uint32_t phyAddr, uint32_t phyReg, uint32_t *dataPtr)
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{
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uint32_t counter;
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/* Check the input parameters*/
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if (!dataPtr)
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{
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return kStatus_ENET_InvalidInput;
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}
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/* Check if the mii is enabled*/
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if (!enet_hal_is_mii_enabled(instance))
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{
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return kStatus_ENET_Miiuninitialized;
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}
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/* Clear the MII interrupt event*/
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enet_hal_clear_interrupt(instance, kEnetMiiInterrupt);
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/* Read command operation*/
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enet_hal_set_mii_command(instance, phyAddr, phyReg, kEnetReadValidFrame, 0);
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/* Poll for MII complete*/
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for (counter = 0; counter < kEnetMaxTimeout; counter++)
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{
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if (enet_hal_get_interrupt_status(instance, kEnetMiiInterrupt))
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{
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break;
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}
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osDelay(1);
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}
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/* Check for timeout*/
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if (counter == kEnetMaxTimeout)
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{
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return kStatus_ENET_TimeOut;
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}
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/* Get data from mii register*/
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*dataPtr = enet_hal_get_mii_data(instance);
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/* Clear MII interrupt event*/
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enet_hal_clear_interrupt(instance, kEnetMiiInterrupt);
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return kStatus_ENET_Success;
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}
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/*FUNCTION****************************************************************
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*
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* Function Name: enet_mii_write
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* Return Value: The execution status.
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* Description: Write function.
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* This interface write data over the (R)MII bus to the specified PHY register.
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* This function is called by all PHY interfaces.
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*END*********************************************************************/
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uint32_t enet_mii_write(uint32_t instance, uint32_t phyAddr, uint32_t phyReg, uint32_t data)
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{
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uint32_t counter;
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/* Check if the mii is enabled*/
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if (!enet_hal_is_mii_enabled(instance))
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{
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return kStatus_ENET_Miiuninitialized;
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}
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/* Clear the MII interrupt event*/
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enet_hal_clear_interrupt(instance, kEnetMiiInterrupt);
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/* Read command operation*/
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enet_hal_set_mii_command(instance, phyAddr, phyReg, kEnetWriteValidFrame, data);
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/* Poll for MII complete*/
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for (counter = 0; counter < kEnetMaxTimeout; counter++)
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{
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if (enet_hal_get_interrupt_status(instance, kEnetMiiInterrupt))
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{
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break;
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}
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osDelay(1);
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}
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/* Check for timeout*/
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if (counter == kEnetMaxTimeout)
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{
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return kStatus_ENET_TimeOut;
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}
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/* Clear MII intrrupt event*/
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enet_hal_clear_interrupt(instance, kEnetMiiInterrupt);
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return kStatus_ENET_Success;
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}
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/*FUNCTION****************************************************************
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*
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* Function Name: enet_mac_mii_init
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* Return Value: The execution status.
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* Description:Initialize the ENET Mac mii(mdc/mdio)interface.
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*END*********************************************************************/
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uint32_t enet_mac_mii_init(enet_dev_if_t * enetIfPtr)
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{
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uint32_t frequency;
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/* Check the input parameters*/
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if (enetIfPtr == NULL)
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{
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return kStatus_ENET_InvalidInput;
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}
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/* Configure mii speed*/
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CLOCK_SYS_GetFreq(kSystemClock, &frequency);
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enet_hal_config_mii(enetIfPtr->deviceNumber, (frequency/(2 * enetIfPtr->macCfgPtr->miiClock) + 1),
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kEnetMdioHoldOneClkCycle, false);
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return kStatus_ENET_Success;
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}
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/*FUNCTION****************************************************************
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*
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* Function Name: enet_mac_rxbd_init
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* Return Value: The execution status.
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* Description:Initialize the ENET receive buffer descriptors.
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* Note: If you do receive on receive interrupt handler the receive
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* data buffer number can be the same as the receive descriptor numbers.
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* But if you are polling receive frames please make sure the receive data
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* buffers are more than buffer descriptors to guarantee a good performance.
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*END*********************************************************************/
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uint32_t enet_mac_rxbd_init(enet_dev_if_t * enetIfPtr, enet_rxbd_config_t *rxbdCfg)
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{
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/* Check the input parameters*/
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if ((!enetIfPtr) || (!rxbdCfg))
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{
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return kStatus_ENET_InvalidInput;
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}
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enetIfPtr->macContextPtr->bufferdescSize = enet_hal_get_bd_size();
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/* Initialize the bd status*/
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enetIfPtr->macContextPtr->isRxFull = false;
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/* Initialize receive bd base address and current address*/
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enetIfPtr->macContextPtr->rxBdBasePtr = rxbdCfg->rxBdPtrAlign;
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enetIfPtr->macContextPtr->rxBdCurPtr = enetIfPtr->macContextPtr->rxBdBasePtr;
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enetIfPtr->macContextPtr->rxBdDirtyPtr = enetIfPtr->macContextPtr->rxBdBasePtr;
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enet_hal_set_rxbd_address(enetIfPtr->deviceNumber, (uint32_t)(enetIfPtr->macContextPtr->rxBdBasePtr));
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return kStatus_ENET_Success;
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}
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/*FUNCTION****************************************************************
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*
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* Function Name: enet_mac_txbd_init
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* Return Value: The execution status.
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* Description:Initialize the ENET transmit buffer descriptors.
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* This function prepare all of the transmit buffer descriptors.
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*END*********************************************************************/
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uint32_t enet_mac_txbd_init(enet_dev_if_t * enetIfPtr, enet_txbd_config_t *txbdCfg)
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{
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/* Check the input parameters*/
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if ((!enetIfPtr) || (!txbdCfg))
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{
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return kStatus_ENET_InvalidInput;
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}
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/* Initialize the bd status*/
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enetIfPtr->macContextPtr->isTxFull = false;
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/* Initialize transmit bd base address and current address*/
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enetIfPtr->macContextPtr->txBdBasePtr = txbdCfg->txBdPtrAlign;
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enetIfPtr->macContextPtr->txBdCurPtr = enetIfPtr->macContextPtr->txBdBasePtr;
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enetIfPtr->macContextPtr->txBdDirtyPtr = enetIfPtr->macContextPtr->txBdBasePtr;
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enet_hal_set_txbd_address(enetIfPtr->deviceNumber, (uint32_t)(enetIfPtr->macContextPtr->txBdBasePtr));
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return kStatus_ENET_Success;
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}
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/*FUNCTION****************************************************************
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*
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* Function Name: enet_mac_configure_fifo_accel
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* Return Value: The execution status.
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* Description: Configure the ENET FIFO and Accelerator.
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*END*********************************************************************/
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uint32_t enet_mac_configure_fifo_accel(enet_dev_if_t * enetIfPtr)
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{
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enet_config_rx_fifo_t rxFifo;
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enet_config_tx_fifo_t txFifo;
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/* Check the input parameters*/
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if (!enetIfPtr)
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{
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return kStatus_ENET_InvalidInput;
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}
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/* Initialize values that will not be initialized later on */
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rxFifo.rxEmpty = 0;
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rxFifo.rxFull = 0;
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txFifo.isStoreForwardEnabled = 0;
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txFifo.txFifoWrite = 0;
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txFifo.txEmpty = 0;
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/* Configure tx/rx accelerator*/
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if (enetIfPtr->macCfgPtr->isRxAccelEnabled)
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{
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enet_hal_config_rx_accelerator(enetIfPtr->deviceNumber,
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(enet_config_rx_accelerator_t *)&(enetIfPtr->macCfgPtr->rxAcceler));
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if ((enetIfPtr->macCfgPtr->rxAcceler.isIpcheckEnabled) || (enetIfPtr->macCfgPtr->rxAcceler.isProtocolCheckEnabled))
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{
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rxFifo.rxFull = 0;
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}
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}
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if (enetIfPtr->macCfgPtr->isTxAccelEnabled)
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{
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enet_hal_config_tx_accelerator(enetIfPtr->deviceNumber,
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(enet_config_tx_accelerator_t *)&(enetIfPtr->macCfgPtr->txAcceler));
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if ((enetIfPtr->macCfgPtr->txAcceler.isIpCheckEnabled) || (enetIfPtr->macCfgPtr->txAcceler.isProtocolCheckEnabled))
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{
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txFifo.isStoreForwardEnabled = 1;
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}
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}
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if (enetIfPtr->macCfgPtr->isStoreAndFwEnabled)
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{
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rxFifo.rxFull = 0;
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txFifo.isStoreForwardEnabled = 1;
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}
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/* Set TFWR value if STRFWD is not being used */
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if (txFifo.isStoreForwardEnabled == 1)
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txFifo.txFifoWrite = 0;
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else
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/* TFWR value is a trade-off between transmit latency and risk of transmit FIFO underrun due to contention for the system bus
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TFWR = 15 means transmission will begin once 960 bytes has been written to the Tx FIFO (for frames larger than 960 bytes)
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See Section 45.4.18 - Transmit FIFO Watermark Register of the K64F Reference Manual for details */
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txFifo.txFifoWrite = 15;
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/* Configure tx/rx FIFO with default value*/
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rxFifo.rxAlmostEmpty = 4;
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rxFifo.rxAlmostFull = 4;
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txFifo.txAlmostEmpty = 4;
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txFifo.txAlmostFull = 8;
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enet_hal_config_rx_fifo(enetIfPtr->deviceNumber, &rxFifo);
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enet_hal_config_tx_fifo(enetIfPtr->deviceNumber, &txFifo);
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return kStatus_ENET_Success;
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}
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/*FUNCTION****************************************************************
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*
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* Function Name: enet_mac_configure_controller
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* Return Value: The execution status.
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* Description: Configure the ENET controller with the basic configuration.
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*END*********************************************************************/
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uint32_t enet_mac_configure_controller(enet_dev_if_t * enetIfPtr)
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{
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uint32_t macCtlCfg;
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/* Check the input parameters*/
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if (enetIfPtr == NULL)
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{
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return kStatus_ENET_InvalidInput;
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}
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macCtlCfg = enetIfPtr->macCfgPtr->macCtlConfigure;
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/* Configure rmii/mii interface*/
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enet_hal_config_rmii(enetIfPtr->deviceNumber, enetIfPtr->macCfgPtr->rmiiCfgMode,
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enetIfPtr->macCfgPtr->speed, enetIfPtr->macCfgPtr->duplex, false,
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(macCtlCfg & kEnetRxMiiLoopback));
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/* Configure receive buffer size*/
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if (enetIfPtr->macCfgPtr->isVlanEnabled)
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{
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enetIfPtr->maxFrameSize = kEnetMaxFrameVlanSize;
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enet_hal_set_rx_max_size(enetIfPtr->deviceNumber,
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enetIfPtr->macContextPtr->rxBufferSizeAligned, kEnetMaxFrameVlanSize);
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}
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else
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{
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enetIfPtr->maxFrameSize = kEnetMaxFrameSize;
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enet_hal_set_rx_max_size(enetIfPtr->deviceNumber,
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enetIfPtr->macContextPtr->rxBufferSizeAligned, kEnetMaxFrameSize);
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}
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/* Set receive controller promiscuous */
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enet_hal_config_promiscuous(enetIfPtr->deviceNumber, macCtlCfg & kEnetRxPromiscuousEnable);
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/* Set receive flow control*/
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enet_hal_enable_flowcontrol(enetIfPtr->deviceNumber, (macCtlCfg & kEnetRxFlowControlEnable));
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/* Set received PAUSE frames are forwarded/terminated*/
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enet_hal_enable_pauseforward(enetIfPtr->deviceNumber, (macCtlCfg & kEnetRxPauseFwdEnable));
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/* Set receive broadcast frame reject*/
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enet_hal_enable_broadcastreject(enetIfPtr->deviceNumber, (macCtlCfg & kEnetRxBcRejectEnable));
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/* Set padding is removed from the received frame*/
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enet_hal_enable_padremove(enetIfPtr->deviceNumber, (macCtlCfg & kEnetRxPadRemoveEnable));
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/* Set the crc of the received frame is stripped from the frame*/
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enet_hal_enable_rxcrcforward(enetIfPtr->deviceNumber, (macCtlCfg & kEnetRxCrcFwdEnable));
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/* Set receive payload length check*/
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enet_hal_enable_payloadcheck(enetIfPtr->deviceNumber, (macCtlCfg & kEnetPayloadlenCheckEnable));
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/* Set control sleep mode*/
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enet_hal_enable_sleep(enetIfPtr->deviceNumber, (macCtlCfg & kEnetSleepModeEnable));
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return kStatus_ENET_Success;
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}
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/*FUNCTION****************************************************************
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*
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* Function Name: enet_mac_init
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* Return Value: The execution status.
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* Description:Initialize the ENET device with the basic configuration
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* When ENET is used, this function need to be called by the NET initialize
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* interface.
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*END*********************************************************************/
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uint32_t enet_mac_init(enet_dev_if_t * enetIfPtr, enet_rxbd_config_t *rxbdCfg,
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enet_txbd_config_t *txbdCfg)
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{
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uint32_t timeOut = 0;
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uint32_t devNumber, result = 0;
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/* Check the input parameters*/
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if (enetIfPtr == NULL)
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{
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return kStatus_ENET_InvalidInput;
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}
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/* Get device number and check the parameter*/
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devNumber = enetIfPtr->deviceNumber;
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/* Store the global ENET structure for ISR input parameters */
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enetIfHandle = enetIfPtr;
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/* Turn on ENET module clock gate */
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CLOCK_SYS_EnableEnetClock(0U);
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/* Reset ENET mac*/
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enet_hal_reset_ethernet(devNumber);
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while ((!enet_hal_is_reset_completed(devNumber)) && (timeOut < kEnetMaxTimeout))
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{
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time_delay(1);
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timeOut++;
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}
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/* Check out if timeout*/
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if (timeOut == kEnetMaxTimeout)
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{
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return kStatus_ENET_TimeOut;
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}
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/* Disable all ENET mac interrupt and Clear all interrupt events*/
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enet_hal_config_interrupt(devNumber, kEnetAllInterrupt, false);
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enet_hal_clear_interrupt(devNumber, kEnetAllInterrupt);
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/* Program this station's physical address*/
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enet_hal_set_mac_address(devNumber, enetIfPtr->macCfgPtr->macAddr);
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/* Clear group and individual hash register*/
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enet_hal_set_group_hashtable(devNumber, 0, kEnetSpecialAddressInit);
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enet_hal_set_individual_hashtable(devNumber, 0, kEnetSpecialAddressInit);
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/* Configure mac controller*/
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result = enet_mac_configure_controller(enetIfPtr);
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if(result != kStatus_ENET_Success)
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{
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return result;
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}
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/* Clear mib zero counters*/
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enet_hal_clear_mib(devNumber, true);
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/* Initialize FIFO and accelerator*/
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result = enet_mac_configure_fifo_accel(enetIfPtr);
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if(result != kStatus_ENET_Success)
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{
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return result;
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}
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/* Initialize receive buffer descriptors*/
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result = enet_mac_rxbd_init(enetIfPtr, rxbdCfg);
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if(result != kStatus_ENET_Success)
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{
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return result;
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}
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/* Initialize transmit buffer descriptors*/
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result = enet_mac_txbd_init(enetIfPtr, txbdCfg);
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if(result != kStatus_ENET_Success)
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{
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return result;
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}
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/* Initialize rmii/mii interface*/
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result = enet_mac_mii_init(enetIfPtr);
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if (result != kStatus_ENET_Success)
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{
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return result;
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}
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return kStatus_ENET_Success;
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}
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/*******************************************************************************
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* EOF
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******************************************************************************/
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