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__ */ 31