1 /* 2 * drivers/mtd/nand_ecc.h 3 * 4 * Copyright (C) 2000-2010 Steven J. Hill <sjhill@realitydiluted.com> 5 * David Woodhouse <dwmw2@infradead.org> 6 * Thomas Gleixner <tglx@linutronix.de> 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__ */ 43