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git://git.openwrt.org/openwrt/openwrt.git
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7e3644d3cf
Use the latest version of the yaffs code. Fetched from the
yaffs2 git tree and it is based on the following commit:
commit bc76682d93955cfb33051beb503ad9f8a5450578
Merge: 3a8580e ffa781d
Author: Charles Manning <cdhmanning@gmail.com>
Date: Thu Jul 11 17:46:25 2013 +1200
Merge branch 'master' of ssh://www.aleph1.co.uk/home/aleph1/git/yaffs2
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
SVN-Revision: 39084
123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
/*
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* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
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*
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* Copyright (C) 2002-2011 Aleph One Ltd.
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* for Toby Churchill Ltd and Brightstar Engineering
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*
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* Created by Charles Manning <charles@aleph1.co.uk>
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#include "yaffs_nand.h"
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#include "yaffs_tagscompat.h"
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#include "yaffs_getblockinfo.h"
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#include "yaffs_summary.h"
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static int apply_chunk_offset(struct yaffs_dev *dev, int chunk)
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{
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return chunk - dev->chunk_offset;
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}
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int yaffs_rd_chunk_tags_nand(struct yaffs_dev *dev, int nand_chunk,
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u8 *buffer, struct yaffs_ext_tags *tags)
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{
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int result;
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struct yaffs_ext_tags local_tags;
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int flash_chunk = apply_chunk_offset(dev, nand_chunk);
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dev->n_page_reads++;
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/* If there are no tags provided use local tags. */
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if (!tags)
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tags = &local_tags;
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result = dev->tagger.read_chunk_tags_fn(dev, flash_chunk, buffer, tags);
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if (tags && tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
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struct yaffs_block_info *bi;
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bi = yaffs_get_block_info(dev,
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nand_chunk /
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dev->param.chunks_per_block);
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yaffs_handle_chunk_error(dev, bi);
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}
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return result;
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}
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int yaffs_wr_chunk_tags_nand(struct yaffs_dev *dev,
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int nand_chunk,
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const u8 *buffer, struct yaffs_ext_tags *tags)
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{
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int result;
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int flash_chunk = apply_chunk_offset(dev, nand_chunk);
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dev->n_page_writes++;
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if (!tags) {
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yaffs_trace(YAFFS_TRACE_ERROR, "Writing with no tags");
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BUG();
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return YAFFS_FAIL;
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}
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tags->seq_number = dev->seq_number;
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tags->chunk_used = 1;
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yaffs_trace(YAFFS_TRACE_WRITE,
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"Writing chunk %d tags %d %d",
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nand_chunk, tags->obj_id, tags->chunk_id);
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result = dev->tagger.write_chunk_tags_fn(dev, flash_chunk,
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buffer, tags);
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yaffs_summary_add(dev, tags, nand_chunk);
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return result;
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}
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int yaffs_mark_bad(struct yaffs_dev *dev, int block_no)
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{
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block_no -= dev->block_offset;
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dev->n_bad_markings++;
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if (dev->param.disable_bad_block_marking)
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return YAFFS_OK;
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return dev->tagger.mark_bad_fn(dev, block_no);
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}
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int yaffs_query_init_block_state(struct yaffs_dev *dev,
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int block_no,
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enum yaffs_block_state *state,
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u32 *seq_number)
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{
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block_no -= dev->block_offset;
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return dev->tagger.query_block_fn(dev, block_no, state, seq_number);
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}
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int yaffs_erase_block(struct yaffs_dev *dev, int block_no)
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{
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int result;
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block_no -= dev->block_offset;
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dev->n_erasures++;
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result = dev->drv.drv_erase_fn(dev, block_no);
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return result;
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}
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int yaffs_init_nand(struct yaffs_dev *dev)
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{
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if (dev->drv.drv_initialise_fn)
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return dev->drv.drv_initialise_fn(dev);
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return YAFFS_OK;
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}
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int yaffs_deinit_nand(struct yaffs_dev *dev)
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{
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if (dev->drv.drv_deinitialise_fn)
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return dev->drv.drv_deinitialise_fn(dev);
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return YAFFS_OK;
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}
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