2 * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
4 * Copyright (C) 2002-2010 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"
16 #include "yaffs_tagsvalidity.h"
18 #include "yaffs_getblockinfo.h"
20 int yaffs_rd_chunk_tags_nand(struct yaffs_dev *dev, int nand_chunk,
22 struct yaffs_ext_tags *tags)
25 struct yaffs_ext_tags local_tags;
27 int realigned_chunk = nand_chunk - dev->chunk_offset;
31 /* If there are no tags provided, use local tags to get prioritised gc working */
35 if (dev->param.read_chunk_tags_fn)
36 result = dev->param.read_chunk_tags_fn(dev, realigned_chunk, buffer,
39 result = yaffs_tags_compat_rd(dev,
44 tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
46 struct yaffs_block_info *bi;
47 bi = yaffs_get_block_info(dev, nand_chunk/dev->param.chunks_per_block);
48 yaffs_handle_chunk_error(dev, bi);
54 int yaffs_wr_chunk_tags_nand(struct yaffs_dev *dev,
57 struct yaffs_ext_tags *tags)
62 nand_chunk -= dev->chunk_offset;
66 tags->seq_number = dev->seq_number;
68 if (!yaffs_validate_tags(tags)) {
70 (TSTR("Writing uninitialised tags" TENDSTR)));
74 (TSTR("Writing chunk %d tags %d %d" TENDSTR), nand_chunk,
75 tags->obj_id, tags->chunk_id));
77 T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR)));
81 if (dev->param.write_chunk_tags_fn)
82 return dev->param.write_chunk_tags_fn(dev, nand_chunk, buffer,
85 return yaffs_tags_compat_wr(dev,
91 int yaffs_mark_bad(struct yaffs_dev *dev, int block_no)
93 block_no -= dev->block_offset;
96 if (dev->param.bad_block_fn)
97 return dev->param.bad_block_fn(dev, block_no);
99 return yaffs_tags_compat_mark_bad(dev, block_no);
102 int yaffs_query_init_block_state(struct yaffs_dev *dev,
104 enum yaffs_block_state *state,
107 block_no -= dev->block_offset;
109 if (dev->param.query_block_fn)
110 return dev->param.query_block_fn(dev, block_no, state, seq_number);
112 return yaffs_tags_compat_query_block(dev, block_no,
118 int yaffs_erase_block(struct yaffs_dev *dev,
123 flash_block -= dev->block_offset;
127 result = dev->param.erase_fn(dev, flash_block);
132 int yaffs_init_nand(struct yaffs_dev *dev)
134 if(dev->param.initialise_flash_fn)
135 return dev->param.initialise_flash_fn(dev);