mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 01:20:52 +07:00
ad2457894c
In case the driver is not probed - due to config mismatches or errors in the DTS files - dev_get_drvdata() returns NULL, leading to an Ooops during boot. Make elm_config() return an error in such cases to propagate the error up to the user, so it can fall back to software mode. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/*
|
|
* BCH Error Location Module
|
|
*
|
|
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#ifndef __ELM_H
|
|
#define __ELM_H
|
|
|
|
enum bch_ecc {
|
|
BCH4_ECC = 0,
|
|
BCH8_ECC,
|
|
};
|
|
|
|
/* ELM support 8 error syndrome process */
|
|
#define ERROR_VECTOR_MAX 8
|
|
|
|
#define BCH8_ECC_OOB_BYTES 13
|
|
#define BCH4_ECC_OOB_BYTES 7
|
|
/* RBL requires 14 byte even though BCH8 uses only 13 byte */
|
|
#define BCH8_SIZE (BCH8_ECC_OOB_BYTES + 1)
|
|
/* Uses 1 extra byte to handle erased pages */
|
|
#define BCH4_SIZE (BCH4_ECC_OOB_BYTES + 1)
|
|
|
|
/**
|
|
* 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[ERROR_VECTOR_MAX];
|
|
};
|
|
|
|
void elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,
|
|
struct elm_errorvec *err_vec);
|
|
int elm_config(struct device *dev, enum bch_ecc bch_type);
|
|
#endif /* __ELM_H */
|