42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
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#ifndef __DFS_CACHE_H__
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#define __DFS_CACHE_H__
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#include <rtthread.h>
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#define IOMAN_STATUS_ATTR_VALIDDATA 0
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#define IOMAN_STATUS_ATTR_USERBUFFER 1
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#define IOMAN_STATUS_ATTR_WRITE 2
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#define IOM_MODE_READONLY 1
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#define IOM_MODE_READWRITE 2
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#define IOM_MODE_EXP_REQ 4
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#define DFS_SECTOR_SIZE 512
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struct _IOManager
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{
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rt_device_t device;
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rt_uint8_t numbuf;
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rt_uint32_t sector[DFS_CACHE_MAX_NUM];
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rt_uint8_t status[DFS_CACHE_MAX_NUM];
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rt_uint8_t usage [DFS_CACHE_MAX_NUM];
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/* cache FIFO */
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rt_uint8_t ring_fifo[DFS_CACHE_MAX_NUM];
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/* cache buffer */
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rt_uint8_t cache[DFS_CACHE_MAX_NUM][DFS_SECTOR_SIZE];
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};
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typedef struct _IOManager IOManager;
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rt_err_t ioman_init(IOManager* ioman);
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rt_uint8_t* ioman_getSector(IOManager *ioman, rt_uint32_t address, rt_uint8_t mode);
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rt_err_t ioman_releaseSector(IOManager *ioman, rt_uint8_t* buf);
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rt_err_t ioman_flushRange(IOManager *ioman, rt_uint32_t address_low, rt_uint32_t address_high);
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rt_err_t ioman_directSectorRead(IOManager *ioman, rt_uint32_t address, rt_uint8_t* buf, rt_uint32_t numsector);
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rt_err_t ioman_directSectorWrite(IOManager *ioman, rt_uint32_t address, rt_uint8_t* buf, rt_uint32_t numsector);
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#endif
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