1c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/*
2c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *  drivers/mtd/nand_ecc.h
3c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *
4c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *  Copyright (C) 2000 Steven J. Hill (sjhill@realitydiluted.com)
5c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *
6c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * $Id: nand_ecc.h,v 1.4 2004/06/17 02:35:02 dbrown Exp $
7c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *
8c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This program is free software; you can redistribute it and/or modify
9c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * it under the terms of the GNU General Public License version 2 as
10c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * published by the Free Software Foundation.
11c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *
12c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This file is the header for the ECC algorithm.
13c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */
14c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru
15c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifndef __MTD_NAND_ECC_H__
16c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define __MTD_NAND_ECC_H__
17c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru
18c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct mtd_info;
19c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru
20c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/*
21c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Calculate 3 byte ECC code for 256 byte block
22c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */
23c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code);
24c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru
25c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/*
26c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Detect and correct a 1 bit error for 256 byte block
27c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */
28c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruint nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc);
29c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru
30c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* __MTD_NAND_ECC_H__ */
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