blob: fe1219095c520ed21acdf6d9be95196333137f94 [file] [log] [blame]
xjb04a4022021-11-25 15:01:52 +08001/*
2 * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
3 *
4 * Copyright (C) 2002-2018 Aleph One Ltd.
5 *
6 * Created by Charles Manning <charles@aleph1.co.uk>
7 *
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.
11 */
12
13#include "yaffs_nand.h"
14#include "yaffs_tagscompat.h"
15
16#include "yaffs_getblockinfo.h"
17#include "yaffs_summary.h"
18
19static int apply_chunk_offset(struct yaffs_dev *dev, int chunk)
20{
21 return chunk - dev->chunk_offset;
22}
23
24int yaffs_rd_chunk_tags_nand(struct yaffs_dev *dev, int nand_chunk,
25 u8 *buffer, struct yaffs_ext_tags *tags)
26{
27 int result;
28 struct yaffs_ext_tags local_tags;
29 int flash_chunk = apply_chunk_offset(dev, nand_chunk);
30
31 dev->n_page_reads++;
32
33 /* If there are no tags provided use local tags. */
34 if (!tags)
35 tags = &local_tags;
36
37 result = dev->tagger.read_chunk_tags_fn(dev, flash_chunk, buffer, tags);
38 if (tags && tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
39
40 struct yaffs_block_info *bi;
41 bi = yaffs_get_block_info(dev,
42 nand_chunk /
43 dev->param.chunks_per_block);
44 yaffs_handle_chunk_error(dev, bi);
45 }
46 return result;
47}
48
49int yaffs_wr_chunk_tags_nand(struct yaffs_dev *dev,
50 int nand_chunk,
51 const u8 *buffer, struct yaffs_ext_tags *tags)
52{
53 int result;
54 int flash_chunk = apply_chunk_offset(dev, nand_chunk);
55
56 dev->n_page_writes++;
57
58 if (!tags) {
59 yaffs_trace(YAFFS_TRACE_ERROR, "Writing with no tags");
60 BUG();
61 return YAFFS_FAIL;
62 }
63
64 tags->seq_number = dev->seq_number;
65 tags->chunk_used = 1;
66 yaffs_trace(YAFFS_TRACE_WRITE,
67 "Writing chunk %d tags %d %d",
68 nand_chunk, tags->obj_id, tags->chunk_id);
69
70 result = dev->tagger.write_chunk_tags_fn(dev, flash_chunk,
71 buffer, tags);
72
73 yaffs_summary_add(dev, tags, nand_chunk);
74
75 return result;
76}
77
78int yaffs_mark_bad(struct yaffs_dev *dev, int block_no)
79{
80 block_no -= dev->block_offset;
81 dev->n_bad_markings++;
82
83 if (dev->param.disable_bad_block_marking)
84 return YAFFS_OK;
85
86 return dev->tagger.mark_bad_fn(dev, block_no);
87}
88
89
90int yaffs_query_init_block_state(struct yaffs_dev *dev,
91 int block_no,
92 enum yaffs_block_state *state,
93 u32 *seq_number)
94{
95 block_no -= dev->block_offset;
96 return dev->tagger.query_block_fn(dev, block_no, state, seq_number);
97}
98
99int yaffs_erase_block(struct yaffs_dev *dev, int block_no)
100{
101 int result;
102
103 block_no -= dev->block_offset;
104 dev->n_erasures++;
105 result = dev->drv.drv_erase_fn(dev, block_no);
106 return result;
107}
108
109int yaffs_init_nand(struct yaffs_dev *dev)
110{
111 if (dev->drv.drv_initialise_fn)
112 return dev->drv.drv_initialise_fn(dev);
113 return YAFFS_OK;
114}
115
116int yaffs_deinit_nand(struct yaffs_dev *dev)
117{
118 if (dev->drv.drv_deinitialise_fn)
119 return dev->drv.drv_deinitialise_fn(dev);
120 return YAFFS_OK;
121}