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git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - include/linux/platform_data/elm.h
2 * BCH Error Location Module
4 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
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.
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.
26 /* ELM support 8 error syndrome process */
27 #define ERROR_VECTOR_MAX 8
29 #define BCH8_ECC_OOB_BYTES 13
30 #define BCH4_ECC_OOB_BYTES 7
31 /* RBL requires 14 byte even though BCH8 uses only 13 byte */
32 #define BCH8_SIZE (BCH8_ECC_OOB_BYTES + 1)
33 /* Uses 1 extra byte to handle erased pages */
34 #define BCH4_SIZE (BCH4_ECC_OOB_BYTES + 1)
37 * struct elm_errorvec - error vector for elm
38 * @error_reported: set true for vectors error is reported
39 * @error_uncorrectable: number of uncorrectable errors
40 * @error_count: number of correctable errors in the sector
41 * @error_loc: buffer for error location
46 bool error_uncorrectable
;
48 int error_loc
[ERROR_VECTOR_MAX
];
51 void elm_decode_bch_error_page(struct device
*dev
, u8
*ecc_calc
,
52 struct elm_errorvec
*err_vec
);
53 int elm_config(struct device
*dev
, enum bch_ecc bch_type
);