e82e40523f
Some drivers use blk->ops->read/write. This bypasses the caching block layer and was never intended like this. The upper API to the block layer is the cdev layer. This patch adds block_read and block_write functions and uses them where appropriate. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
41 lines
897 B
C
41 lines
897 B
C
#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 chunk;
|
|
|
|
struct block_device {
|
|
struct device_d *dev;
|
|
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;
|
|
};
|
|
|
|
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 */
|