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#ifndef __BLOCK_H
#define __BLOCK_H
#include <driver.h>
struct block_device;
struct block_device_ops {
int (*read)(struct block_device *, void *buf, int block, int num_blocks);
int (*write)(struct block_device *, const void *buf, int block, int num_blocks);
};
struct block_device {
struct device_d *dev;
struct block_device_ops *ops;
int blockbits;
int num_blocks;
void *rdbuf; /* read buffer */
int rdbufsize;
int rdblock; /* start block in read buffer */
int rdblockend; /* end block in read buffer */
void *wrbuf; /* write buffer */
int wrblock; /* start block in write buffer */
int wrbufblocks; /* number of blocks currently in write buffer */
int wrbufsize; /* size of write buffer in blocks */
struct cdev cdev;
};
int blockdevice_register(struct block_device *blk);
int blockdevice_unregister(struct block_device *blk);
#endif /* __BLOCK_H */
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