2 * YAFFS: Yet another FFS. A NAND-flash specific file system.
4 * Copyright (C) 2002 Aleph One Ltd.
5 * for Toby Churchill Ltd and Brightstar Engineering
7 * Created by Charles Manning <charles@aleph1.co.uk>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
15 const char *yaffs_nand_c_version =
16 "$Id: yaffs_nand.c,v 1.1 2006-05-08 10:13:34 charles Exp $";
18 #include "yaffs_nand.h"
19 #include "yaffs_tagscompat.h"
20 #include "yaffs_tagsvalidity.h"
23 int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
25 yaffs_ExtendedTags * tags)
27 chunkInNAND -= dev->chunkOffset;
29 if (dev->readChunkWithTagsFromNAND)
30 return dev->readChunkWithTagsFromNAND(dev, chunkInNAND, buffer,
33 return yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev,
39 int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev,
42 yaffs_ExtendedTags * tags)
44 chunkInNAND -= dev->chunkOffset;
48 tags->sequenceNumber = dev->sequenceNumber;
50 if (!yaffs_ValidateTags(tags)) {
52 (TSTR("Writing uninitialised tags" TENDSTR)));
56 (TSTR("Writing chunk %d tags %d %d" TENDSTR), chunkInNAND,
57 tags->objectId, tags->chunkId));
59 T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR)));
63 if (dev->writeChunkWithTagsToNAND)
64 return dev->writeChunkWithTagsToNAND(dev, chunkInNAND, buffer,
67 return yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(dev,
73 int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo)
75 blockNo -= dev->blockOffset;
78 if (dev->markNANDBlockBad)
79 return dev->markNANDBlockBad(dev, blockNo);
81 return yaffs_TagsCompatabilityMarkNANDBlockBad(dev, blockNo);
84 int yaffs_QueryInitialBlockState(yaffs_Device * dev,
86 yaffs_BlockState * state,
87 unsigned *sequenceNumber)
89 blockNo -= dev->blockOffset;
91 if (dev->queryNANDBlock)
92 return dev->queryNANDBlock(dev, blockNo, state, sequenceNumber);
94 return yaffs_TagsCompatabilityQueryNANDBlock(dev, blockNo,
100 int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
105 blockInNAND -= dev->blockOffset;
108 dev->nBlockErasures++;
109 result = dev->eraseBlockInNAND(dev, blockInNAND);
111 /* If at first we don't succeed, try again *once*.*/
113 result = dev->eraseBlockInNAND(dev, blockInNAND);
117 int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev)
119 return dev->initialiseNAND(dev);