2 * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
4 * Copyright (C) 2002-2018 Aleph One Ltd.
6 * Created by Charles Manning <charles@aleph1.co.uk>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #include "yaffs_nand.h"
14 #include "yaffs_tagscompat.h"
16 #include "yaffs_getblockinfo.h"
17 #include "yaffs_summary.h"
19 static int apply_chunk_offset(struct yaffs_dev *dev, int chunk)
21 return chunk - dev->chunk_offset;
24 int yaffs_rd_chunk_tags_nand(struct yaffs_dev *dev, int nand_chunk,
25 u8 *buffer, struct yaffs_ext_tags *tags)
28 struct yaffs_ext_tags local_tags;
29 int flash_chunk = apply_chunk_offset(dev, nand_chunk);
33 /* If there are no tags provided use local tags. */
37 result = dev->tagger.read_chunk_tags_fn(dev, flash_chunk, buffer, tags);
38 if (tags && tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
40 struct yaffs_block_info *bi;
41 bi = yaffs_get_block_info(dev,
43 dev->param.chunks_per_block);
44 yaffs_handle_chunk_error(dev, bi);
49 int yaffs_wr_chunk_tags_nand(struct yaffs_dev *dev,
51 const u8 *buffer, struct yaffs_ext_tags *tags)
54 int flash_chunk = apply_chunk_offset(dev, nand_chunk);
59 yaffs_trace(YAFFS_TRACE_ERROR, "Writing with no tags");
64 tags->seq_number = dev->seq_number;
66 yaffs_trace(YAFFS_TRACE_WRITE,
67 "Writing chunk %d tags %d %d",
68 nand_chunk, tags->obj_id, tags->chunk_id);
70 result = dev->tagger.write_chunk_tags_fn(dev, flash_chunk,
73 yaffs_summary_add(dev, tags, nand_chunk);
78 int yaffs_mark_bad(struct yaffs_dev *dev, int block_no)
80 block_no -= dev->block_offset;
81 dev->n_bad_markings++;
83 if (dev->param.disable_bad_block_marking)
86 return dev->tagger.mark_bad_fn(dev, block_no);
90 int yaffs_query_init_block_state(struct yaffs_dev *dev,
92 enum yaffs_block_state *state,
95 block_no -= dev->block_offset;
96 return dev->tagger.query_block_fn(dev, block_no, state, seq_number);
99 int yaffs_erase_block(struct yaffs_dev *dev, int block_no)
103 block_no -= dev->block_offset;
105 result = dev->drv.drv_erase_fn(dev, block_no);
109 int yaffs_init_nand(struct yaffs_dev *dev)
111 if (dev->drv.drv_initialise_fn)
112 return dev->drv.drv_initialise_fn(dev);
116 int yaffs_deinit_nand(struct yaffs_dev *dev)
118 if (dev->drv.drv_deinitialise_fn)
119 return dev->drv.drv_deinitialise_fn(dev);