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/*
* YAFFS: Yet another FFS. A NAND-flash specific file system.
*
* Copyright (C) 2002 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.
*
*/
const char *yaffs_nand_c_version =
"$Id: yaffs_nand.c,v 1.1 2006-05-08 10:13:34 charles 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)
{
chunkInNAND -= dev->chunkOffset;
if (dev->readChunkWithTagsFromNAND)
return dev->readChunkWithTagsFromNAND(dev, chunkInNAND, buffer,
tags);
else
return yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev,
chunkInNAND,
buffer,
tags);
}
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,
unsigned *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);
/* If at first we don't succeed, try again *once*.*/
if (!result)
result = dev->eraseBlockInNAND(dev, blockInNAND);
return result;
}
int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev)
{
return dev->initialiseNAND(dev);
}
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