1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
* Copyright (C) 2002-2007 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.
*/
/* XXX U-BOOT XXX */
#include <common.h>
const char *yaffs_nand_c_version =
"$Id: yaffs_nand.c,v 1.7 2007/02/14 01:09:06 wookey Exp $";
#include "yaffs_nand.h"
#include "yaffs_tagscompat.h"
#include "yaffs_tagsvalidity.h"
int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
__u8 * buffer,
yaffs_ExtendedTags * tags)
{
int result;
yaffs_ExtendedTags localTags;
int realignedChunkInNAND = chunkInNAND - dev->chunkOffset;
/* If there are no tags provided, use local tags to get prioritised gc working */
if(!tags)
tags = &localTags;
if (dev->readChunkWithTagsFromNAND)
result = dev->readChunkWithTagsFromNAND(dev, realignedChunkInNAND, buffer,
tags);
else
result = yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev,
realignedChunkInNAND,
buffer,
tags);
if(tags &&
tags->eccResult > YAFFS_ECC_RESULT_NO_ERROR){
yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, chunkInNAND/dev->nChunksPerBlock);
yaffs_HandleChunkError(dev,bi);
}
return result;
}
int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev,
int chunkInNAND,
const __u8 * buffer,
yaffs_ExtendedTags * tags)
{
chunkInNAND -= dev->chunkOffset;
if (tags) {
tags->sequenceNumber = dev->sequenceNumber;
tags->chunkUsed = 1;
if (!yaffs_ValidateTags(tags)) {
T(YAFFS_TRACE_ERROR,
(TSTR("Writing uninitialised tags" TENDSTR)));
YBUG();
}
T(YAFFS_TRACE_WRITE,
(TSTR("Writing chunk %d tags %d %d" TENDSTR), chunkInNAND,
tags->objectId, tags->chunkId));
} else {
T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR)));
YBUG();
}
if (dev->writeChunkWithTagsToNAND)
return dev->writeChunkWithTagsToNAND(dev, chunkInNAND, buffer,
tags);
else
return yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(dev,
chunkInNAND,
buffer,
tags);
}
int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo)
{
blockNo -= dev->blockOffset;
;
if (dev->markNANDBlockBad)
return dev->markNANDBlockBad(dev, blockNo);
else
return yaffs_TagsCompatabilityMarkNANDBlockBad(dev, blockNo);
}
int yaffs_QueryInitialBlockState(yaffs_Device * dev,
int blockNo,
yaffs_BlockState * state,
int *sequenceNumber)
{
blockNo -= dev->blockOffset;
if (dev->queryNANDBlock)
return dev->queryNANDBlock(dev, blockNo, state, sequenceNumber);
else
return yaffs_TagsCompatabilityQueryNANDBlock(dev, blockNo,
state,
sequenceNumber);
}
int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
int blockInNAND)
{
int result;
blockInNAND -= dev->blockOffset;
dev->nBlockErasures++;
result = dev->eraseBlockInNAND(dev, blockInNAND);
return result;
}
int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev)
{
return dev->initialiseNAND(dev);
}
|
