diff options
Diffstat (limited to 'ANDROID_3.4.5/include/linux/bch.h')
| -rw-r--r-- | ANDROID_3.4.5/include/linux/bch.h | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/ANDROID_3.4.5/include/linux/bch.h b/ANDROID_3.4.5/include/linux/bch.h deleted file mode 100644 index 295b4ef1..00000000 --- a/ANDROID_3.4.5/include/linux/bch.h +++ /dev/null @@ -1,79 +0,0 @@ -/* - * Generic binary BCH encoding/decoding library - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., 51 - * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Copyright © 2011 Parrot S.A. - * - * Author: Ivan Djelic <ivan.djelic@parrot.com> - * - * Description: - * - * This library provides runtime configurable encoding/decoding of binary - * Bose-Chaudhuri-Hocquenghem (BCH) codes. -*/ -#ifndef _BCH_H -#define _BCH_H - -#include <linux/types.h> - -/** - * struct bch_control - BCH control structure - * @m: Galois field order - * @n: maximum codeword size in bits (= 2^m-1) - * @t: error correction capability in bits - * @ecc_bits: ecc exact size in bits, i.e. generator polynomial degree (<=m*t) - * @ecc_bytes: ecc max size (m*t bits) in bytes - * @a_pow_tab: Galois field GF(2^m) exponentiation lookup table - * @a_log_tab: Galois field GF(2^m) log lookup table - * @mod8_tab: remainder generator polynomial lookup tables - * @ecc_buf: ecc parity words buffer - * @ecc_buf2: ecc parity words buffer - * @xi_tab: GF(2^m) base for solving degree 2 polynomial roots - * @syn: syndrome buffer - * @cache: log-based polynomial representation buffer - * @elp: error locator polynomial - * @poly_2t: temporary polynomials of degree 2t - */ -struct bch_control { - unsigned int m; - unsigned int n; - unsigned int t; - unsigned int ecc_bits; - unsigned int ecc_bytes; -/* private: */ - uint16_t *a_pow_tab; - uint16_t *a_log_tab; - uint32_t *mod8_tab; - uint32_t *ecc_buf; - uint32_t *ecc_buf2; - unsigned int *xi_tab; - unsigned int *syn; - int *cache; - struct gf_poly *elp; - struct gf_poly *poly_2t[4]; -}; - -struct bch_control *init_bch(int m, int t, unsigned int prim_poly); - -void free_bch(struct bch_control *bch); - -void encode_bch(struct bch_control *bch, const uint8_t *data, - unsigned int len, uint8_t *ecc); - -int decode_bch(struct bch_control *bch, const uint8_t *data, unsigned int len, - const uint8_t *recv_ecc, const uint8_t *calc_ecc, - const unsigned int *syn, unsigned int *errloc); - -#endif /* _BCH_H */ |