git.sur5r.net Git - freertos/blob - FreeRTOS-Labs/Source/FreeRTOS-Plus-FAT/portable/avr32_uc3/ff_flush.c

   1 //\r
   2 //\r
   3 //\r
   4 \r
   5 #define SD_MMC_SPI_MEM 1\r
   6 \r
   7 #include "ff_headers.h"\r
   8 \r
   9 #include "logbuf.h"\r
  10 #include "secCache.h"\r
  11 \r
  12 #include "ff_flush.h"\r
  13 \r
  14 extern BaseType_t FF_SemaphoreTaken( void *pxSemaphore );\r
  15 \r
  16 FF_Error_t FF_FlushWrites( FF_IOManager_t *pxIOManager, BaseType_t xForced )\r
  17 {\r
  18 FF_Error_t xRetValue;\r
  19 \r
  20         if( ( pxIOManager == NULL ) || ( cache_dirt_count() == 0 ) )\r
  21         {\r
  22                 xRetValue = FF_ERR_NONE;\r
  23         }\r
  24         else if( ( pxIOManager->ucPreventFlush != pdFALSE ) && ( xForced == pdFALSE ) )\r
  25         {\r
  26                 xRetValue = FF_ERR_IOMAN_PARTITION_MOUNTED | FF_ERRFLAG;\r
  27         }\r
  28         else\r
  29         {\r
  30         BaseType_t rc = 0;\r
  31                 if( xForced != pdFALSE )\r
  32                 {\r
  33                         FF_FlushCache( pxIOManager );\r
  34                 }\r
  35 \r
  36 //              if( FF_TrySemaphore( pxIOManager->pvSemaphore, xForced ? 5000 : 0 ) != pdFALSE )\r
  37                 if( ( xForced != pdFALSE ) || ( FF_SemaphoreTaken( pxIOManager->pvSemaphore ) == pdFALSE ) )\r
  38                 {\r
  39                         rc = cache_flush( xForced );\r
  40 //                      FF_ReleaseSemaphore( pxIOManager->pvSemaphore );\r
  41                 }\r
  42                 xRetValue = rc;\r
  43         }\r
  44         return xRetValue;\r
  45 }\r
  46 \r
  47 FF_Error_t FF_StopFlush( FF_IOManager_t *pxIOManager, BaseType_t xFlag )\r
  48 {\r
  49 FF_Error_t xRetValue;\r
  50 \r
  51         if( pxIOManager == NULL )\r
  52         {\r
  53                 xRetValue = 0;\r
  54         }\r
  55         else\r
  56         {\r
  57                 vTaskSuspendAll();\r
  58                 {\r
  59                         xRetValue = pxIOManager->ucPreventFlush;\r
  60                         if( xFlag != FLUSH_ENABLE )\r
  61                         {\r
  62                                 xRetValue++;\r
  63                         }\r
  64                         else if ( xRetValue > 0 )\r
  65                         {\r
  66                                 xRetValue--;\r
  67                         }\r
  68                         pxIOManager->ucPreventFlush = xRetValue;\r
  69                 }\r
  70                 xTaskResumeAll();\r
  71 \r
  72         }\r
  73 \r
  74         return xRetValue;\r
  75 }\r