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72 lines
1.7 KiB
72 lines
1.7 KiB
/* |
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* Copyright © 2011 Ivan Djelic <ivan.djelic@parrot.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. |
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* |
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* This file is the header for the NAND BCH ECC implementation. |
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*/ |
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#ifndef __MTD_NAND_BCH_H__ |
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#define __MTD_NAND_BCH_H__ |
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struct mtd_info; |
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struct nand_bch_control; |
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#if defined(CONFIG_MTD_NAND_ECC_BCH) |
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static inline int mtd_nand_has_bch(void) { return 1; } |
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/* |
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* Calculate BCH ecc code |
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*/ |
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int nand_bch_calculate_ecc(struct mtd_info *mtd, const u_char *dat, |
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u_char *ecc_code); |
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/* |
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* Detect and correct bit errors |
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*/ |
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int nand_bch_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, |
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u_char *calc_ecc); |
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/* |
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* Initialize BCH encoder/decoder |
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*/ |
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struct nand_bch_control * |
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nand_bch_init(struct mtd_info *mtd, unsigned int eccsize, |
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unsigned int eccbytes, struct nand_ecclayout **ecclayout); |
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/* |
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* Release BCH encoder/decoder resources |
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*/ |
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void nand_bch_free(struct nand_bch_control *nbc); |
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#else /* !CONFIG_MTD_NAND_ECC_BCH */ |
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static inline int mtd_nand_has_bch(void) { return 0; } |
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static inline int |
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nand_bch_calculate_ecc(struct mtd_info *mtd, const u_char *dat, |
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u_char *ecc_code) |
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{ |
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return -1; |
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} |
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static inline int |
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nand_bch_correct_data(struct mtd_info *mtd, unsigned char *buf, |
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unsigned char *read_ecc, unsigned char *calc_ecc) |
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{ |
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return -1; |
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} |
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static inline struct nand_bch_control * |
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nand_bch_init(struct mtd_info *mtd, unsigned int eccsize, |
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unsigned int eccbytes, struct nand_ecclayout **ecclayout) |
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{ |
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return NULL; |
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} |
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static inline void nand_bch_free(struct nand_bch_control *nbc) {} |
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#endif /* CONFIG_MTD_NAND_ECC_BCH */ |
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#endif /* __MTD_NAND_BCH_H__ */
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