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 
21 enum bch_ecc {
22 	BCH4_ECC = 0,
23 	BCH8_ECC,
24 	BCH16_ECC,
25 };
26 
27 /* ELM support 8 error syndrome process */
28 #define ERROR_VECTOR_MAX		8
29 
30 /**
31  * struct elm_errorvec - error vector for elm
32  * @error_reported:		set true for vectors error is reported
33  * @error_uncorrectable:	number of uncorrectable errors
34  * @error_count:		number of correctable errors in the sector
35  * @error_loc:			buffer for error location
36  *
37  */
38 struct elm_errorvec {
39 	bool error_reported;
40 	bool error_uncorrectable;
41 	int error_count;
42 	int error_loc[16];
43 };
44 
45 void elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,
46 		struct elm_errorvec *err_vec);
47 int elm_config(struct device *dev, enum bch_ecc bch_type,
48 	int ecc_steps, int ecc_step_size, int ecc_syndrome_size);
49 #endif /* __ELM_H */
50