Linux kernel mirror (for testing)
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1/*
2 * BCH Error Location Module
3 *
4 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 */
17
18#ifndef __ELM_H
19#define __ELM_H
20
21enum bch_ecc {
22 BCH4_ECC = 0,
23 BCH8_ECC,
24};
25
26/* ELM support 8 error syndrome process */
27#define ERROR_VECTOR_MAX 8
28
29/**
30 * struct elm_errorvec - error vector for elm
31 * @error_reported: set true for vectors error is reported
32 * @error_uncorrectable: number of uncorrectable errors
33 * @error_count: number of correctable errors in the sector
34 * @error_loc: buffer for error location
35 *
36 */
37struct elm_errorvec {
38 bool error_reported;
39 bool error_uncorrectable;
40 int error_count;
41 int error_loc[ERROR_VECTOR_MAX];
42};
43
44void elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,
45 struct elm_errorvec *err_vec);
46int elm_config(struct device *dev, enum bch_ecc bch_type,
47 int ecc_steps, int ecc_step_size, int ecc_syndrome_size);
48#endif /* __ELM_H */