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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* BCH Error Location Module
*
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
*/
#ifndef __ELM_H
#define __ELM_H
enum bch_ecc {
BCH4_ECC = 0,
BCH8_ECC,
BCH16_ECC,
};
/* ELM support 8 error syndrome process */
#define ERROR_VECTOR_MAX 8
/**
* struct elm_errorvec - error vector for elm
* @error_reported: set true for vectors error is reported
* @error_uncorrectable: number of uncorrectable errors
* @error_count: number of correctable errors in the sector
* @error_loc: buffer for error location
*
*/
struct elm_errorvec {
bool error_reported;
bool error_uncorrectable;
int error_count;
int error_loc[16];
};
#if IS_ENABLED(CONFIG_MTD_NAND_OMAP_ELM)
int elm_decode_bch_error_page(u8 *ecc_calc, struct elm_errorvec *err_vec);
int elm_config(enum bch_ecc bch_type, int ecc_steps, int ecc_step_size,
int ecc_syndrome_size);
#else
static inline int
elm_decode_bch_error_page(u8 *ecc_calc, struct elm_errorvec *err_vec)
{
return -ENODEV;
}
static inline int elm_config(enum bch_ecc bch_type, int ecc_steps,
int ecc_step_size, int ecc_syndrome_size)
{
return -ENOSYS;
}
#endif /* CONFIG_MTD_NAND_OMAP_ELM */
#endif /* __ELM_H */
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