fs_dev.h

嵌入式文件系统 ucfs.包含全部源代码

/*
**********************************************************************
*                          Micrium, Inc.
*                      949 Crestview Circle
*                     Weston,  FL 33327-1848
*
*                            uC/FS
*
*             (c) Copyright 2001 - 2003, Micrium, Inc.
*                      All rights reserved.
*
***********************************************************************

----------------------------------------------------------------------
File        : fs_dev.h
Purpose     : Define structures for Device Drivers
---------------------------END-OF-HEADER------------------------------
*/

#ifndef _FS_DEV_H_
#define _FS_DEV_H_

#include "FS_ConfDefaults.h"

#if defined(__cplusplus)
extern "C" {     /* Make sure we have C-declarations in C++ programs */
#endif

/*********************************************************************
*
*             Global data types
*
**********************************************************************
*/

typedef struct {
  const char *      name;
  int               MaxUnits;
  int               (*pfGetStatus)    (FS_U8 Unit);
  int               (*pfRead)         (FS_U8 Unit, FS_U32 SectorNo, void *pBuffer);
  int               (*pfWrite)        (FS_U8 Unit, FS_U32 SectorNo, void *pBuffer);
  int               (*pfIoCtl)        (FS_U8 Unit, FS_I32 Cmd, FS_I32 Aux, void *pBuffer);
  int               (*pfReadBurst)    (FS_U8 Unit, FS_U32 SectorNo, FS_U32 NumSectors,       void *pBuffer);
  int               (*pfWriteBurst)   (FS_U8 Unit, FS_U32 SectorNo, FS_U32 NumSectors, const void *pBuffer);
  int               (*pfInitDevice)   (FS_U8 Unit);
  void              (*pfInitMedium)   (FS_U8 Unit);
} FS_DEVICE_TYPE;


typedef struct {
  char (*pfReadFromCache)   (void * pCacheData, FS_U32 SectorNo,       void * pData);
  void (*pfUpdateCache)     (void * pCacheData, FS_U32 SectorNo, const void * pData);
  void (*pfInvalidateCache) (void * pCacheData);
} FS_CACHE_API;

typedef struct {
  FS_U8 Unit;
  FS_U8 BusyCnt;
  FS_U8 IsChanged;
  FS_U8 MediaState;
#if FS_SUPPORT_CACHE
  const FS_CACHE_API * pCacheAPI;
  void               * pCacheData;
#endif
} FS_DEVICE_DATA;

typedef struct {
  const FS_DEVICE_TYPE * pType;
  FS_DEVICE_DATA   Data;
} FS_DEVICE;

/*********************************************************************
*
*             Device Driver Function Tables
*
*  If you add an own device driver,
*  for its function table here.
*/


extern const FS_DEVICE_TYPE    FS__ramdevice_driver;     /* RAMDISK_DRIVER function table */
extern const FS_DEVICE_TYPE    FS__windrive_driver;      /* WINDRIVE_DRIVER function table */
extern const FS_DEVICE_TYPE    FS__smcdevice_driver;     /* SMC_DRIVER function table */
extern const FS_DEVICE_TYPE    FS__mmcdevice_driver;     /* MMC_DRIVER function table */
extern const FS_DEVICE_TYPE    FS__idedevice_driver;     /* IDE_CF_DRIVER function table */
extern const FS_DEVICE_TYPE    FS__flashdevice_driver;   /* FLASH_DRIVER function table */
extern const FS_DEVICE_TYPE    FS__SFlash_Driver;        /* Serial FLASH_DRIVER function table */
extern const FS_DEVICE_TYPE    FS__genericdevice_driver; /* GENERIC_DRIVER function table */


#if defined(__cplusplus)
 }               /* Make sure we have C-declarations in C++ programs */
#endif

#endif  /* _FS_DEV_H_ */

/*************************** End of file ****************************/