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#ifndef __BLOCK_H
#define __BLOCK_H
#include <driver.h>
#include <linux/list.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);
int (*flush)(struct block_device *);
};
struct chunk;
struct block_device {
struct device_d *dev;
struct list_head list;
struct block_device_ops *ops;
int blockbits;
int num_blocks;
int rdbufsize;
int blkmask;
struct list_head buffered_blocks;
struct list_head idle_blocks;
struct cdev cdev;
};
extern struct list_head block_device_list;
#define for_each_block_device(bdev) list_for_each_entry(bdev, &block_device_list, list)
int blockdevice_register(struct block_device *blk);
int blockdevice_unregister(struct block_device *blk);
int block_read(struct block_device *blk, void *buf, int block, int num_blocks);
int block_write(struct block_device *blk, void *buf, int block, int num_blocks);
static inline int block_flush(struct block_device *blk)
{
return cdev_flush(&blk->cdev);
}
#endif /* __BLOCK_H */
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