Add basic SAM4E driver.
Add ipconfigETHERNET_DRIVER_ADDS_UDP_CHECKSUM, ipconfigETHERNET_DRIVER_ADDS_IP_CHECKSUM, ipconfigETHERNET_DRIVER_CHECKS_IP_CHECKSUM and ipconfigETHERNET_DRIVER_CHECKS_UDP_CHECKSUM definitions.pull/4/head
Richard Barry
11 years ago
parent
0865907f3f
commit
cbb14d30c5
@ -0,0 +1,296 @@
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/*
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* FreeRTOS+UDP V1.0.2 (C) 2013 Real Time Engineers ltd.
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* All rights reserved
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*
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* This file is part of the FreeRTOS+UDP distribution. The FreeRTOS+UDP license
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* terms are different to the FreeRTOS license terms.
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*
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* FreeRTOS+UDP uses a dual license model that allows the software to be used
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* under a pure GPL open source license (as opposed to the modified GPL license
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* under which FreeRTOS is distributed) or a commercial license. Details of
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* both license options follow:
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*
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* - Open source licensing -
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* FreeRTOS+UDP is a free download and may be used, modified, evaluated and
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* distributed without charge provided the user adheres to version two of the
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* GNU General Public License (GPL) and does not remove the copyright notice or
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* this text. The GPL V2 text is available on the gnu.org web site, and on the
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* following URL: http://www.FreeRTOS.org/gpl-2.0.txt.
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*
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* - Commercial licensing -
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* Businesses and individuals that for commercial or other reasons cannot comply
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* with the terms of the GPL V2 license must obtain a commercial license before
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* incorporating FreeRTOS+UDP into proprietary software for distribution in any
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* form. Commercial licenses can be purchased from http://shop.freertos.org/udp
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* and do not require any source files to be changed.
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*
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* FreeRTOS+UDP is distributed in the hope that it will be useful. You cannot
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* use FreeRTOS+UDP unless you agree that you use the software 'as is'.
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* FreeRTOS+UDP is provided WITHOUT ANY WARRANTY; without even the implied
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* warranties of NON-INFRINGEMENT, MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. Real Time Engineers Ltd. disclaims all conditions and terms, be they
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* implied, expressed, or statutory.
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*
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* 1 tab == 4 spaces!
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*
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* http://www.FreeRTOS.org
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* http://www.FreeRTOS.org/udp
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*
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*/
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/* Standard includes. */
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#include <stdint.h>
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/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "queue.h"
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#include "semphr.h"
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/* FreeRTOS+UDP includes. */
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#include "FreeRTOS_UDP_IP.h"
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#include "FreeRTOS_IP_Private.h"
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#include "FreeRTOS_Sockets.h"
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#include "NetworkBufferManagement.h"
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/* Demo includes. */
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#include "NetworkInterface.h"
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/* If a packet cannot be sent immediately then the task performing the send
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operation will be held in the Blocked state (so other tasks can execute) for
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niTX_BUFFER_FREE_WAIT ticks. It will do this a maximum of niMAX_TX_ATTEMPTS
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before giving up. */
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#define niTX_BUFFER_FREE_WAIT ( ( portTickType ) 2UL / portTICK_RATE_MS )
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#define niMAX_TX_ATTEMPTS ( 5 )
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/*-----------------------------------------------------------*/
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/*
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* A deferred interrupt handler task that processes received frames.
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*/
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static void prvGMACDeferredInterruptHandlerTask( void *pvParameters );
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/*
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* Called by the ASF GMAC driver when a packet is received.
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*/
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static void prvGMACRxCallback( uint32_t ulStatus );
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/*-----------------------------------------------------------*/
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/* The queue used to communicate Ethernet events to the IP task. */
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extern xQueueHandle xNetworkEventQueue;
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/* The semaphore used to wake the deferred interrupt handler task when an Rx
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interrupt is received. */
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static xSemaphoreHandle xGMACRxEventSemaphore = NULL;
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/* The GMAC driver instance. */
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static gmac_device_t xGMACStruct;
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/*-----------------------------------------------------------*/
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portBASE_TYPE xNetworkInterfaceInitialise( void )
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{
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gmac_options_t xGMACOptions;
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extern uint8_t ucMACAddress[ 6 ];
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const portTickType xPHYDelay_400ms = 400UL;
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portBASE_TYPE xReturn = pdFALSE;
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/* Ensure PHY is ready. */
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vTaskDelay( xPHYDelay_400ms / portTICK_RATE_MS );
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/* Enable GMAC clock. */
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pmc_enable_periph_clk( ID_GMAC );
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/* Fill in GMAC options */
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xGMACOptions.uc_copy_all_frame = 0;
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xGMACOptions.uc_no_boardcast = 0;
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memcpy( xGMACOptions.uc_mac_addr, ucMACAddress, sizeof( ucMACAddress ) );
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xGMACStruct.p_hw = GMAC;
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/* Init GMAC driver structure. */
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gmac_dev_init( GMAC, &xGMACStruct, &xGMACOptions );
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/* Init MAC PHY driver. */
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if( ethernet_phy_init( GMAC, BOARD_GMAC_PHY_ADDR, sysclk_get_cpu_hz() ) == GMAC_OK )
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{
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/* Auto Negotiate, work in RMII mode. */
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if( ethernet_phy_auto_negotiate( GMAC, BOARD_GMAC_PHY_ADDR ) == GMAC_OK )
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{
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/* Establish Ethernet link. */
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vTaskDelay( xPHYDelay_400ms * 2UL );
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if( ethernet_phy_set_link( GMAC, BOARD_GMAC_PHY_ADDR, 1 ) == GMAC_OK )
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{
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/* Create the event semaphore if it has not already been
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created. */
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if( xGMACRxEventSemaphore == NULL )
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{
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vSemaphoreCreateBinary( xGMACRxEventSemaphore );
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#if ipconfigINCLUDE_EXAMPLE_FREERTOS_PLUS_TRACE_CALLS == 1
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{
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/* If the trace recorder code is included name the semaphore for
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viewing in FreeRTOS+Trace. */
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vTraceSetQueueName( xGMACRxEventSemaphore, "MAC_RX" );
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}
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#endif /* ipconfigINCLUDE_EXAMPLE_FREERTOS_PLUS_TRACE_CALLS == 1 */
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}
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/* Register the callbacks. */
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gmac_dev_set_rx_callback( &xGMACStruct, prvGMACRxCallback );
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/* The Rx deferred interrupt handler task is created at the
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highest possible priority to ensure the interrupt handler can
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return directly to it no matter which task was running when the
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interrupt occurred. */
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xTaskCreate( prvGMACDeferredInterruptHandlerTask,/* The function that implements the task. */
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( const signed char * const ) "MACTsk",
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configMINIMAL_STACK_SIZE, /* Stack allocated to the task (defined in words, not bytes). */
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NULL, /* The task parameter is not used. */
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configMAX_PRIORITIES - 1, /* The priority assigned to the task. */
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NULL ); /* The handle is not required, so NULL is passed. */
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/* Enable the interrupt and set its priority as configured.
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THIS DRIVER REQUIRES configMAC_INTERRUPT_PRIORITY TO BE DEFINED,
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PREFERABLY IN FreeRTOSConfig.h. */
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NVIC_SetPriority( GMAC_IRQn, configMAC_INTERRUPT_PRIORITY );
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NVIC_EnableIRQ( GMAC_IRQn );
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xReturn = pdPASS;
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}
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}
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}
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return xReturn;
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}
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/*-----------------------------------------------------------*/
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static void prvGMACRxCallback( uint32_t ulStatus )
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{
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portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
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/* Unblock the deferred interrupt handler task if the event was an Rx. */
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if( ulStatus != 0 )
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{
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xSemaphoreGiveFromISR( xGMACRxEventSemaphore, &xHigherPriorityTaskWoken );
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}
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portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
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}
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/*-----------------------------------------------------------*/
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portBASE_TYPE xNetworkInterfaceOutput( xNetworkBufferDescriptor_t * const pxNetworkBuffer )
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{
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portBASE_TYPE xReturn = pdFAIL;
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int32_t x;
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/* Attempt to obtain access to a Tx descriptor. */
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for( x = 0; x < niMAX_TX_ATTEMPTS; x++ )
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{
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if( gmac_dev_write( &xGMACStruct, pxNetworkBuffer->pucEthernetBuffer, ( uint32_t ) pxNetworkBuffer->xDataLength, NULL ) == GMAC_OK )
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{
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/* The Tx has been initiated. */
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xReturn = pdPASS;
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break;
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}
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else
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{
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iptraceWAITING_FOR_TX_DMA_DESCRIPTOR();
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vTaskDelay( niTX_BUFFER_FREE_WAIT );
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}
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}
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/* Finished with the network buffer. */
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vNetworkBufferRelease( pxNetworkBuffer );
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return xReturn;
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}
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/*-----------------------------------------------------------*/
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void GMAC_Handler( void )
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{
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gmac_handler( &xGMACStruct );
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}
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/*-----------------------------------------------------------*/
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static void prvGMACDeferredInterruptHandlerTask( void *pvParameters )
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{
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xNetworkBufferDescriptor_t *pxNetworkBuffer;
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xIPStackEvent_t xRxEvent = { eEthernetRxEvent, NULL };
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( void ) pvParameters;
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configASSERT( xGMACRxEventSemaphore );
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for( ;; )
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{
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/* Wait for the GMAC interrupt to indicate that another packet has been
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received. The while() loop is only needed if INCLUDE_vTaskSuspend is
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set to 0 in FreeRTOSConfig.h. If INCLUDE_vTaskSuspend is set to 1
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then portMAX_DELAY would be an indefinite block time and
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xSemaphoreTake() would only return when the semaphore was actually
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obtained. */
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while( xSemaphoreTake( xGMACRxEventSemaphore, portMAX_DELAY ) == pdFALSE );
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/* The buffer filled by the DMA is going to be passed into the IP
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stack. Allocate another buffer for the DMA descriptor. */
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pxNetworkBuffer = pxNetworkBufferGet( ipTOTAL_ETHERNET_FRAME_SIZE, portMAX_DELAY );
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if( pxNetworkBuffer != NULL )
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{
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/* At least one packet has been received. */
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if( gmac_dev_read( &xGMACStruct, pxNetworkBuffer->pucEthernetBuffer, ipTOTAL_ETHERNET_FRAME_SIZE, ( uint32_t * ) &( pxNetworkBuffer->xDataLength ) ) == GMAC_OK )
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{
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#if ipconfigETHERNET_DRIVER_FILTERS_FRAME_TYPES == 1
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{
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if( pxNetworkBuffer->xDataLength > 0 )
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{
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/* If the frame would not be processed by the IP stack then
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don't even bother sending it to the IP stack. */
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if( eConsiderFrameForProcessing( pxNetworkBuffer->pucEthernetBuffer ) != eProcessBuffer )
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{
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pxNetworkBuffer->xDataLength = 0;
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}
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}
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}
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#endif
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if( pxNetworkBuffer->xDataLength > 0 )
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{
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/* Store a pointer to the network buffer structure in the
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padding space that was left in front of the Ethernet frame.
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The pointer is needed to ensure the network buffer structure
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can be located when it is time for it to be freed if the
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Ethernet frame gets used as a zero copy buffer. */
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*( ( xNetworkBufferDescriptor_t ** ) ( ( pxNetworkBuffer->pucEthernetBuffer - ipBUFFER_PADDING ) ) ) = pxNetworkBuffer;
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/* Data was received and stored. Send it to the IP task
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for processing. */
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xRxEvent.pvData = ( void * ) pxNetworkBuffer;
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if( xQueueSendToBack( xNetworkEventQueue, &xRxEvent, ( portTickType ) 0 ) == pdFALSE )
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{
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/* The buffer could not be sent to the IP task so the
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buffer must be released. */
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vNetworkBufferRelease( pxNetworkBuffer );
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iptraceETHERNET_RX_EVENT_LOST();
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}
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else
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{
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iptraceNETWORK_INTERFACE_RECEIVE();
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}
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}
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else
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{
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/* The buffer does not contain any data so there is no
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point sending it to the IP task. Just release it. */
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vNetworkBufferRelease( pxNetworkBuffer );
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iptraceETHERNET_RX_EVENT_LOST();
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}
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}
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else
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{
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iptraceETHERNET_RX_EVENT_LOST();
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}
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}
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}
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}
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/*-----------------------------------------------------------*/
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