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 13 struct nand_chip; 14 15 /* 16 * Calculate 3 byte ECC code for eccsize byte block 17 */ 18 void __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 */ 24 int 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 */ 30 int __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 */ 36 int 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__ */ 40