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/************************************************************************/
/* */
/* PROJECT : exFAT & FAT12/16/32 File System */
/* FILE : exfat_cache.h */
/* PURPOSE : Header File for exFAT Cache Manager */
/* (FAT Cache & Buffer Cache) */
/* */
/*----------------------------------------------------------------------*/
/* NOTES */
/* */
/*----------------------------------------------------------------------*/
/* REVISION HISTORY (Ver 0.9) */
/* */
/* - 2010.11.15 [Sung-Kwan Kim] : first writing */
/* */
/************************************************************************/
#ifndef _EXFAT_CACHE_H
#define _EXFAT_CACHE_H
#include "exfat_config.h"
#include "exfat_global.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/*----------------------------------------------------------------------*/
/* Constant & Macro Definitions */
/*----------------------------------------------------------------------*/
#define LOCKBIT 0x01
#define DIRTYBIT 0x02
/*----------------------------------------------------------------------*/
/* Type Definitions */
/*----------------------------------------------------------------------*/
typedef struct __BUF_CACHE_T {
struct __BUF_CACHE_T *next;
struct __BUF_CACHE_T *prev;
struct __BUF_CACHE_T *hash_next;
struct __BUF_CACHE_T *hash_prev;
INT32 drv;
UINT32 sec;
UINT32 flag;
struct buffer_head *buf_bh;
} BUF_CACHE_T;
/*----------------------------------------------------------------------*/
/* External Function Declarations */
/*----------------------------------------------------------------------*/
INT32 buf_init(struct super_block *sb);
INT32 buf_shutdown(struct super_block *sb);
INT32 FAT_read(struct super_block *sb, UINT32 loc, UINT32 *content);
void FAT_write(struct super_block *sb, UINT32 loc, UINT32 content);
UINT8 *FAT_getblk(struct super_block *sb, UINT32 sec);
void FAT_modify(struct super_block *sb, UINT32 sec);
void FAT_release_all(struct super_block *sb);
void FAT_sync(struct super_block *sb);
UINT8 *buf_getblk(struct super_block *sb, UINT32 sec);
void buf_modify(struct super_block *sb, UINT32 sec);
void buf_lock(struct super_block *sb, UINT32 sec);
void buf_unlock(struct super_block *sb, UINT32 sec);
void buf_release(struct super_block *sb, UINT32 sec);
void buf_release_all(struct super_block *sb);
void buf_sync(struct super_block *sb);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* _EXFAT_CACHE_H */
/* end of exfat_cache.h */
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