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Extra page status checking to combat power loss causing only one bit to change
[yaffs2.git]
/
yaffs_nand.c
diff --git
a/yaffs_nand.c
b/yaffs_nand.c
index cd39d516066564bd452bafd9e48e2a7da82e67c6..af4215772482a2b11db0c77ad1885f75180f0712 100644
(file)
--- a/
yaffs_nand.c
+++ b/
yaffs_nand.c
@@
-1,7
+1,7
@@
/*
/*
- * YAFFS: Yet
another FFS. A NAND-flash specific file system.
+ * YAFFS: Yet
Another Flash File System. A NAND-flash specific file system.
*
*
- * Copyright (C) 2002 Aleph One Ltd.
+ * Copyright (C) 2002
-2007
Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@
-9,31
+9,46
@@
* 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.
* 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.
- *
*/
*/
-
+
const char *yaffs_nand_c_version =
const char *yaffs_nand_c_version =
- "$Id: yaffs_nand.c,v 1.
1 2006-05-08 10:13:34
charles Exp $";
+ "$Id: yaffs_nand.c,v 1.
9 2008-05-05 07:58:58
charles Exp $";
#include "yaffs_nand.h"
#include "yaffs_tagscompat.h"
#include "yaffs_tagsvalidity.h"
#include "yaffs_nand.h"
#include "yaffs_tagscompat.h"
#include "yaffs_tagsvalidity.h"
+#include "yaffs_getblockinfo.h"
int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
__u8 * buffer,
yaffs_ExtendedTags * tags)
{
int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
__u8 * buffer,
yaffs_ExtendedTags * tags)
{
- chunkInNAND -= dev->chunkOffset;
+ 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)
if (dev->readChunkWithTagsFromNAND)
- re
turn dev->readChunkWithTagsFromNAND(dev, c
hunkInNAND, buffer,
+ re
sult = dev->readChunkWithTagsFromNAND(dev, realignedC
hunkInNAND, buffer,
tags);
else
tags);
else
- re
turn
yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev,
-
c
hunkInNAND,
+ re
sult =
yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev,
+
realignedC
hunkInNAND,
buffer,
tags);
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 yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev,
@@
-43,7
+58,7
@@
int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev,
{
chunkInNAND -= dev->chunkOffset;
{
chunkInNAND -= dev->chunkOffset;
-
+
if (tags) {
tags->sequenceNumber = dev->sequenceNumber;
tags->chunkUsed = 1;
if (tags) {
tags->sequenceNumber = dev->sequenceNumber;
tags->chunkUsed = 1;
@@
-84,7
+99,7
@@
int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo)
int yaffs_QueryInitialBlockState(yaffs_Device * dev,
int blockNo,
yaffs_BlockState * state,
int yaffs_QueryInitialBlockState(yaffs_Device * dev,
int blockNo,
yaffs_BlockState * state,
-
unsigned
*sequenceNumber)
+
__u32
*sequenceNumber)
{
blockNo -= dev->blockOffset;
{
blockNo -= dev->blockOffset;
@@
-108,9
+123,6
@@
int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
dev->nBlockErasures++;
result = dev->eraseBlockInNAND(dev, blockInNAND);
dev->nBlockErasures++;
result = dev->eraseBlockInNAND(dev, blockInNAND);
- /* If at first we don't succeed, try again *once*.*/
- if (!result)
- result = dev->eraseBlockInNAND(dev, blockInNAND);
return result;
}
return result;
}
@@
-120,4
+132,4
@@
int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev)
}
}
-
+