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nand_ecc.h
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1 /*
2  * drivers/mtd/nand_ecc.h
3  *
4  * Copyright (C) 2000-2010 Steven J. Hill <[email protected]>
5  * David Woodhouse <[email protected]>
6  * Thomas Gleixner <[email protected]>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  *
12  * This file is the header for the ECC algorithm.
13  */
14 
15 #ifndef __MTD_NAND_ECC_H__
16 #define __MTD_NAND_ECC_H__
17 
18 struct mtd_info;
19 
20 /*
21  * Calculate 3 byte ECC code for eccsize byte block
22  */
23 void __nand_calculate_ecc(const u_char *dat, unsigned int eccsize,
24  u_char *ecc_code);
25 
26 /*
27  * Calculate 3 byte ECC code for 256/512 byte block
28  */
29 int nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code);
30 
31 /*
32  * Detect and correct a 1 bit error for eccsize byte block
33  */
34 int __nand_correct_data(u_char *dat, u_char *read_ecc, u_char *calc_ecc,
35  unsigned int eccsize);
36 
37 /*
38  * Detect and correct a 1 bit error for 256/512 byte block
39  */
40 int nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc);
41 
42 #endif /* __MTD_NAND_ECC_H__ */