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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2000-2010 Steven J. Hill <sjhill@realitydiluted.com>
4 * David Woodhouse <dwmw2@infradead.org>
5 * Thomas Gleixner <tglx@linutronix.de>
6 *
7 * This file is the header for the ECC algorithm.
8 */
9
10#ifndef __MTD_NAND_ECC_H__
11#define __MTD_NAND_ECC_H__
12
13struct nand_chip;
14
15/*
16 * Calculate 3 byte ECC code for eccsize byte block
17 */
18void __nand_calculate_ecc(const u_char *dat, unsigned int eccsize,
19 u_char *ecc_code, bool sm_order);
20
21/*
22 * Calculate 3 byte ECC code for 256/512 byte block
23 */
24int nand_calculate_ecc(struct nand_chip *chip, const u_char *dat,
25 u_char *ecc_code);
26
27/*
28 * Detect and correct a 1 bit error for eccsize byte block
29 */
30int __nand_correct_data(u_char *dat, u_char *read_ecc, u_char *calc_ecc,
31 unsigned int eccsize, bool sm_order);
32
33/*
34 * Detect and correct a 1 bit error for 256/512 byte block
35 */
36int nand_correct_data(struct nand_chip *chip, u_char *dat, u_char *read_ecc,
37 u_char *calc_ecc);
38
39#endif /* __MTD_NAND_ECC_H__ */