mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-18 14:07:10 +02:00
34b60fad1a
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34013 3c298f89-4303-0410-b956-a3cf2f4a3e73
141 lines
3.1 KiB
C
141 lines
3.1 KiB
C
/*
|
|
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
|
|
*
|
|
* Copyright (C) 2002-2010 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 General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include "yaffs_nand.h"
|
|
#include "yaffs_tagscompat.h"
|
|
#include "yaffs_tagsvalidity.h"
|
|
|
|
#include "yaffs_getblockinfo.h"
|
|
|
|
int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk,
|
|
__u8 *buffer,
|
|
yaffs_ext_tags *tags)
|
|
{
|
|
int result;
|
|
yaffs_ext_tags localTags;
|
|
|
|
int realignedChunkInNAND = nand_chunk - dev->chunk_offset;
|
|
|
|
dev->n_page_reads++;
|
|
|
|
/* If there are no tags provided, use local tags to get prioritised gc working */
|
|
if (!tags)
|
|
tags = &localTags;
|
|
|
|
if (dev->param.read_chunk_tags_fn)
|
|
result = dev->param.read_chunk_tags_fn(dev, realignedChunkInNAND, buffer,
|
|
tags);
|
|
else
|
|
result = yaffs_tags_compat_rd(dev,
|
|
realignedChunkInNAND,
|
|
buffer,
|
|
tags);
|
|
if (tags &&
|
|
tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
|
|
|
|
yaffs_block_info_t *bi;
|
|
bi = yaffs_get_block_info(dev, nand_chunk/dev->param.chunks_per_block);
|
|
yaffs_handle_chunk_error(dev, bi);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev,
|
|
int nand_chunk,
|
|
const __u8 *buffer,
|
|
yaffs_ext_tags *tags)
|
|
{
|
|
|
|
dev->n_page_writes++;
|
|
|
|
nand_chunk -= dev->chunk_offset;
|
|
|
|
|
|
if (tags) {
|
|
tags->seq_number = dev->seq_number;
|
|
tags->chunk_used = 1;
|
|
if (!yaffs_validate_tags(tags)) {
|
|
T(YAFFS_TRACE_ERROR,
|
|
(TSTR("Writing uninitialised tags" TENDSTR)));
|
|
YBUG();
|
|
}
|
|
T(YAFFS_TRACE_WRITE,
|
|
(TSTR("Writing chunk %d tags %d %d" TENDSTR), nand_chunk,
|
|
tags->obj_id, tags->chunk_id));
|
|
} else {
|
|
T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR)));
|
|
YBUG();
|
|
}
|
|
|
|
if (dev->param.write_chunk_tags_fn)
|
|
return dev->param.write_chunk_tags_fn(dev, nand_chunk, buffer,
|
|
tags);
|
|
else
|
|
return yaffs_tags_compat_wr(dev,
|
|
nand_chunk,
|
|
buffer,
|
|
tags);
|
|
}
|
|
|
|
int yaffs_mark_bad(yaffs_dev_t *dev, int block_no)
|
|
{
|
|
block_no -= dev->block_offset;
|
|
|
|
|
|
if (dev->param.bad_block_fn)
|
|
return dev->param.bad_block_fn(dev, block_no);
|
|
else
|
|
return yaffs_tags_compat_mark_bad(dev, block_no);
|
|
}
|
|
|
|
int yaffs_query_init_block_state(yaffs_dev_t *dev,
|
|
int block_no,
|
|
yaffs_block_state_t *state,
|
|
__u32 *seq_number)
|
|
{
|
|
block_no -= dev->block_offset;
|
|
|
|
if (dev->param.query_block_fn)
|
|
return dev->param.query_block_fn(dev, block_no, state, seq_number);
|
|
else
|
|
return yaffs_tags_compat_query_block(dev, block_no,
|
|
state,
|
|
seq_number);
|
|
}
|
|
|
|
|
|
int yaffs_erase_block(struct yaffs_dev_s *dev,
|
|
int flash_block)
|
|
{
|
|
int result;
|
|
|
|
flash_block -= dev->block_offset;
|
|
|
|
dev->n_erasures++;
|
|
|
|
result = dev->param.erase_fn(dev, flash_block);
|
|
|
|
return result;
|
|
}
|
|
|
|
int yaffs_init_nand(struct yaffs_dev_s *dev)
|
|
{
|
|
if(dev->param.initialise_flash_fn)
|
|
return dev->param.initialise_flash_fn(dev);
|
|
return YAFFS_OK;
|
|
}
|
|
|
|
|
|
|