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1/*
2 * Copyright (C) 2000-2010 Steven J. Hill <sjhill@realitydiluted.com>
3 * David Woodhouse <dwmw2@infradead.org>
4 * Thomas Gleixner <tglx@linutronix.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This file is the header for the ECC algorithm.
11 */
12
13#ifndef __MTD_NAND_ECC_H__
14#define __MTD_NAND_ECC_H__
15
16struct nand_chip;
17
18/*
19 * Calculate 3 byte ECC code for eccsize byte block
20 */
21void __nand_calculate_ecc(const u_char *dat, unsigned int eccsize,
22 u_char *ecc_code, bool sm_order);
23
24/*
25 * Calculate 3 byte ECC code for 256/512 byte block
26 */
27int nand_calculate_ecc(struct nand_chip *chip, const u_char *dat,
28 u_char *ecc_code);
29
30/*
31 * Detect and correct a 1 bit error for eccsize byte block
32 */
33int __nand_correct_data(u_char *dat, u_char *read_ecc, u_char *calc_ecc,
34 unsigned int eccsize, bool sm_order);
35
36/*
37 * Detect and correct a 1 bit error for 256/512 byte block
38 */
39int nand_correct_data(struct nand_chip *chip, u_char *dat, u_char *read_ecc,
40 u_char *calc_ecc);
41
42#endif /* __MTD_NAND_ECC_H__ */