2be589e4b2
ELM hardware engine is used to detect ECC errors for BCHx ecc-schemes (like BCH4/BCH8/BCH16). This patch extends configuration of ELM registers for adding support of BCH16_HW ecc-scheme. Signed-off-by: Pekon Gupta <pekon@ti.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/*
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* BCH Error Location Module
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*
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __ELM_H
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#define __ELM_H
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enum bch_ecc {
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BCH4_ECC = 0,
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BCH8_ECC,
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BCH16_ECC,
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};
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/* ELM support 8 error syndrome process */
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#define ERROR_VECTOR_MAX 8
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/**
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* struct elm_errorvec - error vector for elm
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* @error_reported: set true for vectors error is reported
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* @error_uncorrectable: number of uncorrectable errors
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* @error_count: number of correctable errors in the sector
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* @error_loc: buffer for error location
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*
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*/
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struct elm_errorvec {
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bool error_reported;
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bool error_uncorrectable;
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int error_count;
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int error_loc[16];
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};
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void elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,
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struct elm_errorvec *err_vec);
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int elm_config(struct device *dev, enum bch_ecc bch_type,
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int ecc_steps, int ecc_step_size, int ecc_syndrome_size);
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#endif /* __ELM_H */
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