2 * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
4 * Copyright (C) 2002-2011 Aleph One Ltd.
5 * for Toby Churchill Ltd and Brightstar Engineering
7 * Created by Charles Manning <charles@aleph1.co.uk>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #include "yaffs_nand.h"
15 #include "yaffs_tagscompat.h"
17 #include "yaffs_getblockinfo.h"
19 int yaffs_rd_chunk_tags_nand(struct yaffs_dev *dev, int nand_chunk,
20 u8 *buffer, struct yaffs_ext_tags *tags)
23 struct yaffs_ext_tags local_tags;
24 int realigned_chunk = nand_chunk - dev->chunk_offset;
28 /* If there are no tags provided use local tags. */
32 if (dev->param.read_chunk_tags_fn)
34 dev->param.read_chunk_tags_fn(dev, realigned_chunk, buffer,
37 result = yaffs_tags_compat_rd(dev,
38 realigned_chunk, buffer, tags);
39 if (tags && tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
41 struct yaffs_block_info *bi;
42 bi = yaffs_get_block_info(dev,
44 dev->param.chunks_per_block);
45 yaffs_handle_chunk_error(dev, bi);
50 int yaffs_wr_chunk_tags_nand(struct yaffs_dev *dev,
52 const u8 *buffer, struct yaffs_ext_tags *tags)
55 nand_chunk -= dev->chunk_offset;
58 tags->seq_number = dev->seq_number;
60 yaffs_trace(YAFFS_TRACE_WRITE,
61 "Writing chunk %d tags %d %d",
62 nand_chunk, tags->obj_id, tags->chunk_id);
64 yaffs_trace(YAFFS_TRACE_ERROR, "Writing with no tags");
69 if (dev->param.write_chunk_tags_fn)
70 return dev->param.write_chunk_tags_fn(dev, nand_chunk, buffer,
73 return yaffs_tags_compat_wr(dev, nand_chunk, buffer, tags);
76 int yaffs_mark_bad(struct yaffs_dev *dev, int block_no)
78 block_no -= dev->block_offset;
79 if (dev->param.bad_block_fn)
80 return dev->param.bad_block_fn(dev, block_no);
82 return yaffs_tags_compat_mark_bad(dev, block_no);
85 int yaffs_query_init_block_state(struct yaffs_dev *dev,
87 enum yaffs_block_state *state,
90 block_no -= dev->block_offset;
91 if (dev->param.query_block_fn)
92 return dev->param.query_block_fn(dev, block_no, state,
95 return yaffs_tags_compat_query_block(dev, block_no, state, seq_number);
98 int yaffs_erase_block(struct yaffs_dev *dev, int flash_block)
102 flash_block -= dev->block_offset;
104 result = dev->param.erase_fn(dev, flash_block);
108 int yaffs_init_nand(struct yaffs_dev *dev)
110 if (dev->param.initialise_flash_fn)
111 return dev->param.initialise_flash_fn(dev);