/*
|
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
|
*
|
* Copyright (C) 2002-2011 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_getblockinfo.h"
|
#include "yaffs_summary.h"
|
|
int yaffs_rd_chunk_tags_nand(struct yaffs_dev *dev, int nand_chunk,
|
u8 *buffer, struct yaffs_ext_tags *tags)
|
{
|
int result;
|
struct yaffs_ext_tags local_tags;
|
int flash_chunk = nand_chunk - dev->chunk_offset;
|
|
dev->n_page_reads++;
|
|
/* If there are no tags provided use local tags. */
|
if (!tags)
|
tags = &local_tags;
|
|
if (dev->param.read_chunk_tags_fn)
|
result =
|
dev->param.read_chunk_tags_fn(dev, flash_chunk, buffer,
|
tags);
|
else
|
result = yaffs_tags_compat_rd(dev,
|
flash_chunk, buffer, tags);
|
if (tags && tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
|
|
struct yaffs_block_info *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(struct yaffs_dev *dev,
|
int nand_chunk,
|
const u8 *buffer, struct yaffs_ext_tags *tags)
|
{
|
int result;
|
int flash_chunk = nand_chunk - dev->chunk_offset;
|
|
dev->n_page_writes++;
|
|
if (tags) {
|
tags->seq_number = dev->seq_number;
|
tags->chunk_used = 1;
|
yaffs_trace(YAFFS_TRACE_WRITE,
|
"Writing chunk %d tags %d %d",
|
nand_chunk, tags->obj_id, tags->chunk_id);
|
} else {
|
yaffs_trace(YAFFS_TRACE_ERROR, "Writing with no tags");
|
BUG();
|
return YAFFS_FAIL;
|
}
|
|
if (dev->param.write_chunk_tags_fn)
|
result = dev->param.write_chunk_tags_fn(dev, flash_chunk,
|
buffer, tags);
|
else
|
result = yaffs_tags_compat_wr(dev, flash_chunk, buffer, tags);
|
|
yaffs_summary_add(dev, tags, nand_chunk);
|
|
return result;
|
}
|
|
int yaffs_mark_bad(struct yaffs_dev *dev, int block_no)
|
{
|
block_no -= dev->block_offset;
|
if (dev->param.bad_block_fn)
|
return dev->param.bad_block_fn(dev, block_no);
|
|
return yaffs_tags_compat_mark_bad(dev, block_no);
|
}
|
|
int yaffs_query_init_block_state(struct yaffs_dev *dev,
|
int block_no,
|
enum yaffs_block_state *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);
|
|
return yaffs_tags_compat_query_block(dev, block_no, state, seq_number);
|
}
|
|
int yaffs_erase_block(struct yaffs_dev *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 *dev)
|
{
|
if (dev->param.initialise_flash_fn)
|
return dev->param.initialise_flash_fn(dev);
|
return YAFFS_OK;
|
}
|
