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| author | Peter Denison <openwrt@marshadder.org> | 2008-05-16 19:25:20 +0000 |
|---|---|---|
| committer | Peter Denison <openwrt@marshadder.org> | 2008-05-16 19:25:20 +0000 |
| commit | 79aed699d71b9f583762a4b184bb7a68521dccb9 (patch) | |
| tree | 74aaab10bc8d14ea76857a0ea17fc31419d255e9 /target/linux/generic-2.6/files-2.6.25/fs/yaffs2/yaffs_ecc.h | |
| parent | 9788ab458ceb294131f6145eba79dfd01e380ffc (diff) | |
| download | mtk-20170518-79aed699d71b9f583762a4b184bb7a68521dccb9.zip mtk-20170518-79aed699d71b9f583762a4b184bb7a68521dccb9.tar.gz mtk-20170518-79aed699d71b9f583762a4b184bb7a68521dccb9.tar.bz2 | |
Remove files now present upstream in files-2.6.25 (This is mostly just drivers/ssb and include/linux/ssb) [brcm47xx] Regenerate patches against 2.6.25.1 kernel+files set Default is still to build against 2.6.23.16
SVN-Revision: 11155
Diffstat (limited to 'target/linux/generic-2.6/files-2.6.25/fs/yaffs2/yaffs_ecc.h')
| -rw-r--r-- | target/linux/generic-2.6/files-2.6.25/fs/yaffs2/yaffs_ecc.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/files-2.6.25/fs/yaffs2/yaffs_ecc.h b/target/linux/generic-2.6/files-2.6.25/fs/yaffs2/yaffs_ecc.h new file mode 100644 index 0000000..40fd02b --- /dev/null +++ b/target/linux/generic-2.6/files-2.6.25/fs/yaffs2/yaffs_ecc.h @@ -0,0 +1,44 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2007 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning <charles@aleph1.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + + /* + * This code implements the ECC algorithm used in SmartMedia. + * + * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes. + * The two unused bit are set to 1. + * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC + * blocks are used on a 512-byte NAND page. + * + */ + +#ifndef __YAFFS_ECC_H__ +#define __YAFFS_ECC_H__ + +typedef struct { + unsigned char colParity; + unsigned lineParity; + unsigned lineParityPrime; +} yaffs_ECCOther; + +void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc); +int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, + const unsigned char *test_ecc); + +void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes, + yaffs_ECCOther * ecc); +int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, + yaffs_ECCOther * read_ecc, + const yaffs_ECCOther * test_ecc); +#endif |
