mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-04-19 21:11:57 -04:00
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.
This commit is contained in:
Richard Barry
parent
0865907f3f
commit
cbb14d30c5
|
|
@ -220,7 +220,7 @@ static void prvReturnEthernetFrame( xNetworkBufferDescriptor_t * const pxNetwork
|
|||
/*
|
||||
* Return the checksum generated over usDataLengthBytes from pucNextData.
|
||||
*/
|
||||
static uint16_t prvGenerateChecksum( const uint8_t * const pucNextData, const uint16_t usDataLengthBytes );
|
||||
static uint16_t prvGenerateChecksum( const uint8_t * const pucNextData, const uint16_t usDataLengthBytes, portBASE_TYPE xChecksumIsOffloaded );
|
||||
|
||||
/*
|
||||
* The callback function that is assigned to all periodic processing timers -
|
||||
|
|
@ -246,7 +246,7 @@ static void prvRefreshARPCacheEntry( const xMACAddress_t * const pxMACAddress, c
|
|||
* Creates the pseudo header necessary then generate the checksum over the UDP
|
||||
* packet. Returns the calculated checksum.
|
||||
*/
|
||||
static uint16_t prvGenerateUDPChecksum( const xUDPPacket_t * const pxUDPPacket );
|
||||
static uint16_t prvGenerateUDPChecksum( const xUDPPacket_t * const pxUDPPacket, portBASE_TYPE xChecksumIsOffloaded );
|
||||
|
||||
/*
|
||||
* Look for ulIPAddress in the ARP cache. If the IP address exists, copy the
|
||||
|
|
@ -665,7 +665,7 @@ void FreeRTOS_GetAddressConfiguration( uint32_t *pulIPAddress, uint32_t *pulNetM
|
|||
memset( ( void * ) pucChar, ( int ) ipECHO_DATA_FILL_BYTE, xNumberOfBytesToSend );
|
||||
|
||||
/* The message is complete, calculate the checksum. */
|
||||
pxICMPHeader->usChecksum = prvGenerateChecksum( ( uint8_t * ) pxICMPHeader, ( uint16_t ) ( xNumberOfBytesToSend + sizeof( xICMPHeader_t ) ) );
|
||||
pxICMPHeader->usChecksum = prvGenerateChecksum( ( uint8_t * ) pxICMPHeader, ( uint16_t ) ( xNumberOfBytesToSend + sizeof( xICMPHeader_t ) ), pdFALSE );
|
||||
|
||||
/* Complete the network buffer information. */
|
||||
pxNetworkBuffer->ulIPAddress = ulIPAddress;
|
||||
|
|
@ -985,7 +985,7 @@ xUDPHeader_t *pxUDPHeader;
|
|||
|
||||
if( ( ucSocketOptions & FREERTOS_SO_UDPCKSUM_OUT ) != 0U )
|
||||
{
|
||||
pxUDPHeader->usChecksum = prvGenerateUDPChecksum( pxUDPPacket );
|
||||
pxUDPHeader->usChecksum = prvGenerateUDPChecksum( pxUDPPacket, ipconfigETHERNET_DRIVER_ADDS_UDP_CHECKSUM );
|
||||
if( pxUDPHeader->usChecksum == 0x00 )
|
||||
{
|
||||
/* A calculated checksum of 0 must be inverted as 0 means the
|
||||
|
|
@ -1117,7 +1117,7 @@ xUDPHeader_t *pxUDPHeader;
|
|||
pxIPHeader->usLength = FreeRTOS_htons( pxIPHeader->usLength );
|
||||
pxIPHeader->ulDestinationIPAddress = pxNetworkBuffer->ulIPAddress;
|
||||
pxIPHeader->usIdentification = usPacketIdentifier;
|
||||
pxIPHeader->usHeaderChecksum = prvGenerateChecksum( ( uint8_t * ) &( pxIPHeader->ucVersionHeaderLength ), ipIP_HEADER_LENGTH );
|
||||
pxIPHeader->usHeaderChecksum = prvGenerateChecksum( ( uint8_t * ) &( pxIPHeader->ucVersionHeaderLength ), ipIP_HEADER_LENGTH, ipconfigETHERNET_DRIVER_ADDS_IP_CHECKSUM );
|
||||
}
|
||||
else if ( eReturned == eARPCacheMiss )
|
||||
{
|
||||
|
|
@ -1234,7 +1234,7 @@ xUDPHeader_t *pxUDPHeader;
|
|||
pxNetworkBuffer->xDataLength = pxIPHeader->usLength + sizeof( xEthernetHeader_t );
|
||||
pxIPHeader->usLength = FreeRTOS_htons( pxIPHeader->usLength );
|
||||
pxIPHeader->ulDestinationIPAddress = pxNetworkBuffer->ulIPAddress;
|
||||
pxIPHeader->usHeaderChecksum = prvGenerateChecksum( ( uint8_t * ) &( pxIPHeader->ucVersionHeaderLength ), ipIP_HEADER_LENGTH );
|
||||
pxIPHeader->usHeaderChecksum = prvGenerateChecksum( ( uint8_t * ) &( pxIPHeader->ucVersionHeaderLength ), ipIP_HEADER_LENGTH, ipconfigETHERNET_DRIVER_ADDS_IP_CHECKSUM );
|
||||
}
|
||||
else if ( eReturned == eARPCacheMiss )
|
||||
{
|
||||
|
|
@ -1493,7 +1493,7 @@ portBASE_TYPE xChecksumIsCorrect;
|
|||
if( ( pxIPHeader->ucVersionHeaderLength == ipIP_VERSION_AND_HEADER_LENGTH_BYTE ) && ( ( pxIPHeader->usFragmentOffset & ipFRAGMENT_OFFSET_BIT_MASK ) == 0U ) )
|
||||
{
|
||||
/* Is the IP header checksum correct? */
|
||||
if( prvGenerateChecksum( ( uint8_t * ) &( pxIPHeader->ucVersionHeaderLength ), ipIP_HEADER_LENGTH ) == 0 )
|
||||
if( prvGenerateChecksum( ( uint8_t * ) &( pxIPHeader->ucVersionHeaderLength ), ipIP_HEADER_LENGTH, ipconfigETHERNET_DRIVER_CHECKS_IP_CHECKSUM ) == 0 )
|
||||
{
|
||||
/* Add the IP and MAC addresses to the ARP table if they are not
|
||||
already there - otherwise refresh the age of the existing
|
||||
|
|
@ -1535,7 +1535,7 @@ portBASE_TYPE xChecksumIsCorrect;
|
|||
{
|
||||
xChecksumIsCorrect = pdTRUE;
|
||||
}
|
||||
else if( prvGenerateUDPChecksum( pxUDPPacket ) == 0 )
|
||||
else if( prvGenerateUDPChecksum( pxUDPPacket, ipconfigETHERNET_DRIVER_CHECKS_UDP_CHECKSUM ) == 0 )
|
||||
{
|
||||
xChecksumIsCorrect = pdTRUE;
|
||||
}
|
||||
|
|
@ -1569,11 +1569,13 @@ portBASE_TYPE xChecksumIsCorrect;
|
|||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static uint16_t prvGenerateUDPChecksum( const xUDPPacket_t * const pxUDPPacket )
|
||||
static uint16_t prvGenerateUDPChecksum( const xUDPPacket_t * const pxUDPPacket, portBASE_TYPE xChecksumIsOffloaded )
|
||||
{
|
||||
xPseudoHeader_t *pxPseudoHeader;
|
||||
uint16_t usLength, usReturn;
|
||||
|
||||
if( xChecksumIsOffloaded == pdFALSE )
|
||||
{
|
||||
/* Map the pseudo header into the correct place within the real IP
|
||||
header. */
|
||||
pxPseudoHeader = ( xPseudoHeader_t * ) &( pxUDPPacket->xIPHeader.ucTimeToLive );
|
||||
|
|
@ -1588,7 +1590,15 @@ uint16_t usLength, usReturn;
|
|||
pxPseudoHeader->usUDPLength = pxUDPPacket->xUDPHeader.usLength;
|
||||
|
||||
usLength = FreeRTOS_ntohs( pxPseudoHeader->usUDPLength );
|
||||
usReturn = prvGenerateChecksum( ( uint8_t * ) pxPseudoHeader, usLength + sizeof( xPseudoHeader_t ) );
|
||||
usReturn = prvGenerateChecksum( ( uint8_t * ) pxPseudoHeader, usLength + sizeof( xPseudoHeader_t ), pdFALSE );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* The hardware will check the checksum. Returning 0 allows this
|
||||
function to be used to both check an incoming checksum and set an
|
||||
outgoing checksum in this case. */
|
||||
usReturn = 0;
|
||||
}
|
||||
|
||||
return usReturn;
|
||||
}
|
||||
|
|
@ -1610,7 +1620,7 @@ uint16_t usLength, usReturn;
|
|||
message itself. */
|
||||
usDataLength -= sizeof( xIPHeader_t );
|
||||
|
||||
if( prvGenerateChecksum( ( uint8_t * ) &( pxICMPPacket->xICMPHeader ), usDataLength ) != 0 )
|
||||
if( prvGenerateChecksum( ( uint8_t * ) &( pxICMPPacket->xICMPHeader ), usDataLength, pdFALSE ) != 0 )
|
||||
{
|
||||
eStatus = eInvalidChecksum;
|
||||
}
|
||||
|
|
@ -1717,11 +1727,13 @@ uint16_t usLength, usReturn;
|
|||
#endif /* ( ipconfigREPLY_TO_INCOMING_PINGS == 1 ) || ( ipconfigSUPPORT_OUTGOING_PINGS == 1 ) */
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static uint16_t prvGenerateChecksum( const uint8_t * const pucNextData, const uint16_t usDataLengthBytes )
|
||||
static uint16_t prvGenerateChecksum( const uint8_t * const pucNextData, const uint16_t usDataLengthBytes, portBASE_TYPE xChecksumIsOffloaded )
|
||||
{
|
||||
uint32_t ulChecksum = 0;
|
||||
uint16_t us, usDataLength16BitWords, *pusNextData;
|
||||
uint16_t us, usDataLength16BitWords, *pusNextData, usReturn;
|
||||
|
||||
if( xChecksumIsOffloaded == pdFALSE )
|
||||
{
|
||||
/* There are half as many 16 bit words than bytes. */
|
||||
usDataLength16BitWords = ( usDataLengthBytes >> 1U );
|
||||
|
||||
|
|
@ -1752,7 +1764,16 @@ uint16_t us, usDataLength16BitWords, *pusNextData;
|
|||
ulChecksum = ( ulChecksum & 0xffffUL ) + ( ulChecksum >> 16UL );
|
||||
}
|
||||
|
||||
return ~( ( uint16_t ) ulChecksum );
|
||||
usReturn = ~( ( uint16_t ) ulChecksum );
|
||||
}
|
||||
else
|
||||
{
|
||||
/* The checksum is calculated by the hardware. Return 0 here to ensure
|
||||
this works for both incoming and outgoing checksums. */
|
||||
usReturn = 0;
|
||||
}
|
||||
|
||||
return usReturn;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
|
|
|
|||
|
|
@ -3,6 +3,13 @@ Changes between V1.0.1 and V1.0.2
|
|||
+ Increase the size of the critical section in the function that obtains a
|
||||
private port number.
|
||||
+ Add defaults for more trace macros.
|
||||
+ Update network interfaces so all compile with latest code revision.
|
||||
+ Added the following definitions for improved performance on hardware that
|
||||
has the ability to offload checksum generation and/or checking:
|
||||
ipconfigETHERNET_DRIVER_ADDS_UDP_CHECKSUM
|
||||
ipconfigETHERNET_DRIVER_ADDS_IP_CHECKSUM
|
||||
ipconfigETHERNET_DRIVER_CHECKS_IP_CHECKSUM
|
||||
ipconfigETHERNET_DRIVER_CHECKS_UDP_CHECKSUM
|
||||
|
||||
Changes between V1.0.0 and V1.0.1
|
||||
|
||||
|
|
|
|||
|
|
@ -152,4 +152,20 @@ from the FreeRTOSIPConfig.h configuration header file. */
|
|||
#define ipconfigSUPPORT_SELECT_FUNCTION 0
|
||||
#endif
|
||||
|
||||
#ifndef ipconfigETHERNET_DRIVER_ADDS_UDP_CHECKSUM
|
||||
#define ipconfigETHERNET_DRIVER_ADDS_UDP_CHECKSUM 0
|
||||
#endif
|
||||
|
||||
#ifndef ipconfigETHERNET_DRIVER_ADDS_IP_CHECKSUM
|
||||
#define ipconfigETHERNET_DRIVER_ADDS_IP_CHECKSUM 0
|
||||
#endif
|
||||
|
||||
#ifndef ipconfigETHERNET_DRIVER_CHECKS_IP_CHECKSUM
|
||||
#define ipconfigETHERNET_DRIVER_CHECKS_IP_CHECKSUM 0
|
||||
#endif
|
||||
|
||||
#ifndef ipconfigETHERNET_DRIVER_CHECKS_UDP_CHECKSUM
|
||||
#define ipconfigETHERNET_DRIVER_CHECKS_UDP_CHECKSUM 0
|
||||
#endif
|
||||
|
||||
#endif /* FREERTOS_DEFAULT_IP_CONFIG_H */
|
||||
|
|
|
|||
|
|
@ -114,10 +114,10 @@ struct freertos_sockaddr
|
|||
|
||||
#define FreeRTOS_inet_ntoa( ulIPAddress, pucBuffer ) \
|
||||
sprintf( ( char * ) ( pucBuffer ), "%d.%d.%d.%d", \
|
||||
( ( ulIPAddress ) & 0xffUL ), \
|
||||
( ( ( ulIPAddress ) >> 8UL ) & 0xffUL ), \
|
||||
( ( ( ulIPAddress ) >> 16UL ) & 0xffUL ), \
|
||||
( ( ( ulIPAddress ) >> 24UL ) & 0xffUL ) )
|
||||
( int ) ( ( ulIPAddress ) & 0xffUL ), \
|
||||
( int ) ( ( ( ulIPAddress ) >> 8UL ) & 0xffUL ),\
|
||||
( int ) ( ( ( ulIPAddress ) >> 16UL ) & 0xffUL ),\
|
||||
( int ) ( ( ( ulIPAddress ) >> 24UL ) & 0xffUL ) )
|
||||
|
||||
#else /* ipconfigBYTE_ORDER */
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,296 @@
|
|||
/*
|
||||
* FreeRTOS+UDP V1.0.2 (C) 2013 Real Time Engineers ltd.
|
||||
* All rights reserved
|
||||
*
|
||||
* This file is part of the FreeRTOS+UDP distribution. The FreeRTOS+UDP license
|
||||
* terms are different to the FreeRTOS license terms.
|
||||
*
|
||||
* FreeRTOS+UDP uses a dual license model that allows the software to be used
|
||||
* under a pure GPL open source license (as opposed to the modified GPL license
|
||||
* under which FreeRTOS is distributed) or a commercial license. Details of
|
||||
* both license options follow:
|
||||
*
|
||||
* - Open source licensing -
|
||||
* FreeRTOS+UDP is a free download and may be used, modified, evaluated and
|
||||
* distributed without charge provided the user adheres to version two of the
|
||||
* GNU General Public License (GPL) and does not remove the copyright notice or
|
||||
* this text. The GPL V2 text is available on the gnu.org web site, and on the
|
||||
* following URL: http://www.FreeRTOS.org/gpl-2.0.txt.
|
||||
*
|
||||
* - Commercial licensing -
|
||||
* Businesses and individuals that for commercial or other reasons cannot comply
|
||||
* with the terms of the GPL V2 license must obtain a commercial license before
|
||||
* incorporating FreeRTOS+UDP into proprietary software for distribution in any
|
||||
* form. Commercial licenses can be purchased from http://shop.freertos.org/udp
|
||||
* and do not require any source files to be changed.
|
||||
*
|
||||
* FreeRTOS+UDP is distributed in the hope that it will be useful. You cannot
|
||||
* use FreeRTOS+UDP unless you agree that you use the software 'as is'.
|
||||
* FreeRTOS+UDP is provided WITHOUT ANY WARRANTY; without even the implied
|
||||
* warranties of NON-INFRINGEMENT, MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
* PURPOSE. Real Time Engineers Ltd. disclaims all conditions and terms, be they
|
||||
* implied, expressed, or statutory.
|
||||
*
|
||||
* 1 tab == 4 spaces!
|
||||
*
|
||||
* http://www.FreeRTOS.org
|
||||
* http://www.FreeRTOS.org/udp
|
||||
*
|
||||
*/
|
||||
|
||||
/* Standard includes. */
|
||||
#include <stdint.h>
|
||||
|
||||
/* FreeRTOS includes. */
|
||||
#include "FreeRTOS.h"
|
||||
#include "task.h"
|
||||
#include "queue.h"
|
||||
#include "semphr.h"
|
||||
|
||||
/* FreeRTOS+UDP includes. */
|
||||
#include "FreeRTOS_UDP_IP.h"
|
||||
#include "FreeRTOS_IP_Private.h"
|
||||
#include "FreeRTOS_Sockets.h"
|
||||
#include "NetworkBufferManagement.h"
|
||||
|
||||
/* Demo includes. */
|
||||
#include "NetworkInterface.h"
|
||||
|
||||
/* If a packet cannot be sent immediately then the task performing the send
|
||||
operation will be held in the Blocked state (so other tasks can execute) for
|
||||
niTX_BUFFER_FREE_WAIT ticks. It will do this a maximum of niMAX_TX_ATTEMPTS
|
||||
before giving up. */
|
||||
#define niTX_BUFFER_FREE_WAIT ( ( portTickType ) 2UL / portTICK_RATE_MS )
|
||||
#define niMAX_TX_ATTEMPTS ( 5 )
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/*
|
||||
* A deferred interrupt handler task that processes received frames.
|
||||
*/
|
||||
static void prvGMACDeferredInterruptHandlerTask( void *pvParameters );
|
||||
|
||||
/*
|
||||
* Called by the ASF GMAC driver when a packet is received.
|
||||
*/
|
||||
static void prvGMACRxCallback( uint32_t ulStatus );
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* The queue used to communicate Ethernet events to the IP task. */
|
||||
extern xQueueHandle xNetworkEventQueue;
|
||||
|
||||
/* The semaphore used to wake the deferred interrupt handler task when an Rx
|
||||
interrupt is received. */
|
||||
static xSemaphoreHandle xGMACRxEventSemaphore = NULL;
|
||||
|
||||
/* The GMAC driver instance. */
|
||||
static gmac_device_t xGMACStruct;
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
portBASE_TYPE xNetworkInterfaceInitialise( void )
|
||||
{
|
||||
gmac_options_t xGMACOptions;
|
||||
extern uint8_t ucMACAddress[ 6 ];
|
||||
const portTickType xPHYDelay_400ms = 400UL;
|
||||
portBASE_TYPE xReturn = pdFALSE;
|
||||
|
||||
/* Ensure PHY is ready. */
|
||||
vTaskDelay( xPHYDelay_400ms / portTICK_RATE_MS );
|
||||
|
||||
/* Enable GMAC clock. */
|
||||
pmc_enable_periph_clk( ID_GMAC );
|
||||
|
||||
/* Fill in GMAC options */
|
||||
xGMACOptions.uc_copy_all_frame = 0;
|
||||
xGMACOptions.uc_no_boardcast = 0;
|
||||
memcpy( xGMACOptions.uc_mac_addr, ucMACAddress, sizeof( ucMACAddress ) );
|
||||
|
||||
xGMACStruct.p_hw = GMAC;
|
||||
|
||||
/* Init GMAC driver structure. */
|
||||
gmac_dev_init( GMAC, &xGMACStruct, &xGMACOptions );
|
||||
|
||||
/* Init MAC PHY driver. */
|
||||
if( ethernet_phy_init( GMAC, BOARD_GMAC_PHY_ADDR, sysclk_get_cpu_hz() ) == GMAC_OK )
|
||||
{
|
||||
/* Auto Negotiate, work in RMII mode. */
|
||||
if( ethernet_phy_auto_negotiate( GMAC, BOARD_GMAC_PHY_ADDR ) == GMAC_OK )
|
||||
{
|
||||
/* Establish Ethernet link. */
|
||||
vTaskDelay( xPHYDelay_400ms * 2UL );
|
||||
if( ethernet_phy_set_link( GMAC, BOARD_GMAC_PHY_ADDR, 1 ) == GMAC_OK )
|
||||
{
|
||||
/* Create the event semaphore if it has not already been
|
||||
created. */
|
||||
if( xGMACRxEventSemaphore == NULL )
|
||||
{
|
||||
vSemaphoreCreateBinary( xGMACRxEventSemaphore );
|
||||
#if ipconfigINCLUDE_EXAMPLE_FREERTOS_PLUS_TRACE_CALLS == 1
|
||||
{
|
||||
/* If the trace recorder code is included name the semaphore for
|
||||
viewing in FreeRTOS+Trace. */
|
||||
vTraceSetQueueName( xGMACRxEventSemaphore, "MAC_RX" );
|
||||
}
|
||||
#endif /* ipconfigINCLUDE_EXAMPLE_FREERTOS_PLUS_TRACE_CALLS == 1 */
|
||||
}
|
||||
|
||||
/* Register the callbacks. */
|
||||
gmac_dev_set_rx_callback( &xGMACStruct, prvGMACRxCallback );
|
||||
|
||||
/* The Rx deferred interrupt handler task is created at the
|
||||
highest possible priority to ensure the interrupt handler can
|
||||
return directly to it no matter which task was running when the
|
||||
interrupt occurred. */
|
||||
xTaskCreate( prvGMACDeferredInterruptHandlerTask,/* The function that implements the task. */
|
||||
( const signed char * const ) "MACTsk",
|
||||
configMINIMAL_STACK_SIZE, /* Stack allocated to the task (defined in words, not bytes). */
|
||||
NULL, /* The task parameter is not used. */
|
||||
configMAX_PRIORITIES - 1, /* The priority assigned to the task. */
|
||||
NULL ); /* The handle is not required, so NULL is passed. */
|
||||
|
||||
/* Enable the interrupt and set its priority as configured.
|
||||
THIS DRIVER REQUIRES configMAC_INTERRUPT_PRIORITY TO BE DEFINED,
|
||||
PREFERABLY IN FreeRTOSConfig.h. */
|
||||
NVIC_SetPriority( GMAC_IRQn, configMAC_INTERRUPT_PRIORITY );
|
||||
NVIC_EnableIRQ( GMAC_IRQn );
|
||||
xReturn = pdPASS;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return xReturn;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void prvGMACRxCallback( uint32_t ulStatus )
|
||||
{
|
||||
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
|
||||
|
||||
/* Unblock the deferred interrupt handler task if the event was an Rx. */
|
||||
if( ulStatus != 0 )
|
||||
{
|
||||
xSemaphoreGiveFromISR( xGMACRxEventSemaphore, &xHigherPriorityTaskWoken );
|
||||
}
|
||||
|
||||
portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
portBASE_TYPE xNetworkInterfaceOutput( xNetworkBufferDescriptor_t * const pxNetworkBuffer )
|
||||
{
|
||||
portBASE_TYPE xReturn = pdFAIL;
|
||||
int32_t x;
|
||||
|
||||
/* Attempt to obtain access to a Tx descriptor. */
|
||||
for( x = 0; x < niMAX_TX_ATTEMPTS; x++ )
|
||||
{
|
||||
if( gmac_dev_write( &xGMACStruct, pxNetworkBuffer->pucEthernetBuffer, ( uint32_t ) pxNetworkBuffer->xDataLength, NULL ) == GMAC_OK )
|
||||
{
|
||||
/* The Tx has been initiated. */
|
||||
xReturn = pdPASS;
|
||||
break;
|
||||
}
|
||||
else
|
||||
{
|
||||
iptraceWAITING_FOR_TX_DMA_DESCRIPTOR();
|
||||
vTaskDelay( niTX_BUFFER_FREE_WAIT );
|
||||
}
|
||||
}
|
||||
|
||||
/* Finished with the network buffer. */
|
||||
vNetworkBufferRelease( pxNetworkBuffer );
|
||||
|
||||
return xReturn;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
void GMAC_Handler( void )
|
||||
{
|
||||
gmac_handler( &xGMACStruct );
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
static void prvGMACDeferredInterruptHandlerTask( void *pvParameters )
|
||||
{
|
||||
xNetworkBufferDescriptor_t *pxNetworkBuffer;
|
||||
xIPStackEvent_t xRxEvent = { eEthernetRxEvent, NULL };
|
||||
|
||||
( void ) pvParameters;
|
||||
configASSERT( xGMACRxEventSemaphore );
|
||||
|
||||
for( ;; )
|
||||
{
|
||||
/* Wait for the GMAC interrupt to indicate that another packet has been
|
||||
received. The while() loop is only needed if INCLUDE_vTaskSuspend is
|
||||
set to 0 in FreeRTOSConfig.h. If INCLUDE_vTaskSuspend is set to 1
|
||||
then portMAX_DELAY would be an indefinite block time and
|
||||
xSemaphoreTake() would only return when the semaphore was actually
|
||||
obtained. */
|
||||
while( xSemaphoreTake( xGMACRxEventSemaphore, portMAX_DELAY ) == pdFALSE );
|
||||
|
||||
/* The buffer filled by the DMA is going to be passed into the IP
|
||||
stack. Allocate another buffer for the DMA descriptor. */
|
||||
pxNetworkBuffer = pxNetworkBufferGet( ipTOTAL_ETHERNET_FRAME_SIZE, portMAX_DELAY );
|
||||
|
||||
if( pxNetworkBuffer != NULL )
|
||||
{
|
||||
/* At least one packet has been received. */
|
||||
if( gmac_dev_read( &xGMACStruct, pxNetworkBuffer->pucEthernetBuffer, ipTOTAL_ETHERNET_FRAME_SIZE, ( uint32_t * ) &( pxNetworkBuffer->xDataLength ) ) == GMAC_OK )
|
||||
{
|
||||
#if ipconfigETHERNET_DRIVER_FILTERS_FRAME_TYPES == 1
|
||||
{
|
||||
if( pxNetworkBuffer->xDataLength > 0 )
|
||||
{
|
||||
/* If the frame would not be processed by the IP stack then
|
||||
don't even bother sending it to the IP stack. */
|
||||
if( eConsiderFrameForProcessing( pxNetworkBuffer->pucEthernetBuffer ) != eProcessBuffer )
|
||||
{
|
||||
pxNetworkBuffer->xDataLength = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
if( pxNetworkBuffer->xDataLength > 0 )
|
||||
{
|
||||
/* Store a pointer to the network buffer structure in the
|
||||
padding space that was left in front of the Ethernet frame.
|
||||
The pointer is needed to ensure the network buffer structure
|
||||
can be located when it is time for it to be freed if the
|
||||
Ethernet frame gets used as a zero copy buffer. */
|
||||
*( ( xNetworkBufferDescriptor_t ** ) ( ( pxNetworkBuffer->pucEthernetBuffer - ipBUFFER_PADDING ) ) ) = pxNetworkBuffer;
|
||||
|
||||
/* Data was received and stored. Send it to the IP task
|
||||
for processing. */
|
||||
xRxEvent.pvData = ( void * ) pxNetworkBuffer;
|
||||
if( xQueueSendToBack( xNetworkEventQueue, &xRxEvent, ( portTickType ) 0 ) == pdFALSE )
|
||||
{
|
||||
/* The buffer could not be sent to the IP task so the
|
||||
buffer must be released. */
|
||||
vNetworkBufferRelease( pxNetworkBuffer );
|
||||
iptraceETHERNET_RX_EVENT_LOST();
|
||||
}
|
||||
else
|
||||
{
|
||||
iptraceNETWORK_INTERFACE_RECEIVE();
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* The buffer does not contain any data so there is no
|
||||
point sending it to the IP task. Just release it. */
|
||||
vNetworkBufferRelease( pxNetworkBuffer );
|
||||
iptraceETHERNET_RX_EVENT_LOST();
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
iptraceETHERNET_RX_EVENT_LOST();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
Loading…
Reference in a new issue