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import RT-Thread RTOS 0.3.x to Google SVN

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong
2009-07-02 22:48:23 +00:00
parent 80c72e66de
commit bda4730a94
321 changed files with 116698 additions and 0 deletions
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filesystem/dfs/include/dfs_cache.h
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#ifndef __DFS_CACHE_H__
#define __DFS_CACHE_H__
#include <rtthread.h>
#define IOMAN_STATUS_ATTR_VALIDDATA 0
#define IOMAN_STATUS_ATTR_USERBUFFER 1
#define IOMAN_STATUS_ATTR_WRITE 2
#define IOM_MODE_READONLY 1
#define IOM_MODE_READWRITE 2
#define IOM_MODE_EXP_REQ 4
#define DFS_SECTOR_SIZE 512
struct _IOManager
{
rt_device_t device;
rt_uint8_t numbuf;
rt_uint32_t sector[DFS_CACHE_MAX_NUM];
rt_uint8_t status[DFS_CACHE_MAX_NUM];
rt_uint8_t usage [DFS_CACHE_MAX_NUM];
/* cache FIFO */
rt_uint8_t ring_fifo[DFS_CACHE_MAX_NUM];
/* cache buffer */
rt_uint8_t cache[DFS_CACHE_MAX_NUM][DFS_SECTOR_SIZE];
};
typedef struct _IOManager IOManager;
rt_err_t ioman_init(IOManager* ioman);
rt_uint8_t* ioman_getSector(IOManager *ioman, rt_uint32_t address, rt_uint8_t mode);
rt_err_t ioman_releaseSector(IOManager *ioman, rt_uint8_t* buf);
rt_err_t ioman_flushRange(IOManager *ioman, rt_uint32_t address_low, rt_uint32_t address_high);
rt_err_t ioman_directSectorRead(IOManager *ioman, rt_uint32_t address, rt_uint8_t* buf, rt_uint32_t numsector);
rt_err_t ioman_directSectorWrite(IOManager *ioman, rt_uint32_t address, rt_uint8_t* buf, rt_uint32_t numsector);
#endif