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