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author | Gabor Juhos <juhosg@openwrt.org> | 2012-10-30 14:58:13 +0000 |
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committer | Gabor Juhos <juhosg@openwrt.org> | 2012-10-30 14:58:13 +0000 |
commit | 56190ed0fcdb453b218be4fcefa938850a81c83e (patch) | |
tree | e9ea299478862360b7ec361c7d80f9fb9f4deddf /target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c | |
parent | 73c75e0dd862a8898bcf377aa265574c6a7f3c81 (diff) | |
download | upstream-56190ed0fcdb453b218be4fcefa938850a81c83e.tar.gz upstream-56190ed0fcdb453b218be4fcefa938850a81c83e.tar.bz2 upstream-56190ed0fcdb453b218be4fcefa938850a81c83e.zip |
generic: fold yaffs_cvs_2009_04_24 patch to generic/files
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
SVN-Revision: 34012
Diffstat (limited to 'target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c')
-rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c | 131 |
1 files changed, 71 insertions, 60 deletions
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c b/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c index 7622b1af7c..402537fb4e 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c @@ -14,16 +14,17 @@ #include "yaffs_guts.h" #include "yaffs_tagscompat.h" #include "yaffs_ecc.h" +#include "yaffs_getblockinfo.h" -static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND); +static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND); #ifdef NOTYET -static void yaffs_CheckWrittenBlock(yaffs_Device * dev, int chunkInNAND); -static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND, - const __u8 * data, - const yaffs_Spare * spare); -static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND, - const yaffs_Spare * spare); -static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND); +static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND); +static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, + const __u8 *data, + const yaffs_Spare *spare); +static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, + const yaffs_Spare *spare); +static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND); #endif static const char yaffs_countBitsTable[256] = { @@ -54,13 +55,13 @@ int yaffs_CountBits(__u8 x) /********** Tags ECC calculations *********/ -void yaffs_CalcECC(const __u8 * data, yaffs_Spare * spare) +void yaffs_CalcECC(const __u8 *data, yaffs_Spare *spare) { yaffs_ECCCalculate(data, spare->ecc1); yaffs_ECCCalculate(&data[256], spare->ecc2); } -void yaffs_CalcTagsECC(yaffs_Tags * tags) +void yaffs_CalcTagsECC(yaffs_Tags *tags) { /* Calculate an ecc */ @@ -74,9 +75,8 @@ void yaffs_CalcTagsECC(yaffs_Tags * tags) for (i = 0; i < 8; i++) { for (j = 1; j & 0xff; j <<= 1) { bit++; - if (b[i] & j) { + if (b[i] & j) ecc ^= bit; - } } } @@ -84,7 +84,7 @@ void yaffs_CalcTagsECC(yaffs_Tags * tags) } -int yaffs_CheckECCOnTags(yaffs_Tags * tags) +int yaffs_CheckECCOnTags(yaffs_Tags *tags) { unsigned ecc = tags->ecc; @@ -115,8 +115,8 @@ int yaffs_CheckECCOnTags(yaffs_Tags * tags) /********** Tags **********/ -static void yaffs_LoadTagsIntoSpare(yaffs_Spare * sparePtr, - yaffs_Tags * tagsPtr) +static void yaffs_LoadTagsIntoSpare(yaffs_Spare *sparePtr, + yaffs_Tags *tagsPtr) { yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr; @@ -132,8 +132,8 @@ static void yaffs_LoadTagsIntoSpare(yaffs_Spare * sparePtr, sparePtr->tagByte7 = tu->asBytes[7]; } -static void yaffs_GetTagsFromSpare(yaffs_Device * dev, yaffs_Spare * sparePtr, - yaffs_Tags * tagsPtr) +static void yaffs_GetTagsFromSpare(yaffs_Device *dev, yaffs_Spare *sparePtr, + yaffs_Tags *tagsPtr) { yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr; int result; @@ -148,21 +148,20 @@ static void yaffs_GetTagsFromSpare(yaffs_Device * dev, yaffs_Spare * sparePtr, tu->asBytes[7] = sparePtr->tagByte7; result = yaffs_CheckECCOnTags(tagsPtr); - if (result > 0) { + if (result > 0) dev->tagsEccFixed++; - } else if (result < 0) { + else if (result < 0) dev->tagsEccUnfixed++; - } } -static void yaffs_SpareInitialise(yaffs_Spare * spare) +static void yaffs_SpareInitialise(yaffs_Spare *spare) { memset(spare, 0xFF, sizeof(yaffs_Spare)); } static int yaffs_WriteChunkToNAND(struct yaffs_DeviceStruct *dev, - int chunkInNAND, const __u8 * data, - yaffs_Spare * spare) + int chunkInNAND, const __u8 *data, + yaffs_Spare *spare) { if (chunkInNAND < dev->startBlock * dev->nChunksPerBlock) { T(YAFFS_TRACE_ERROR, @@ -177,9 +176,9 @@ static int yaffs_WriteChunkToNAND(struct yaffs_DeviceStruct *dev, static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev, int chunkInNAND, - __u8 * data, - yaffs_Spare * spare, - yaffs_ECCResult * eccResult, + __u8 *data, + yaffs_Spare *spare, + yaffs_ECCResult *eccResult, int doErrorCorrection) { int retVal; @@ -252,9 +251,11 @@ static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev, /* Must allocate enough memory for spare+2*sizeof(int) */ /* for ecc results from device. */ struct yaffs_NANDSpare nspare; - retVal = - dev->readChunkFromNAND(dev, chunkInNAND, data, - (yaffs_Spare *) & nspare); + + memset(&nspare, 0, sizeof(nspare)); + + retVal = dev->readChunkFromNAND(dev, chunkInNAND, data, + (yaffs_Spare *) &nspare); memcpy(spare, &nspare, sizeof(yaffs_Spare)); if (data && doErrorCorrection) { if (nspare.eccres1 > 0) { @@ -302,8 +303,7 @@ static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev, static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, int chunkInNAND) { - - static int init = 0; + static int init; static __u8 cmpbuf[YAFFS_BYTES_PER_CHUNK]; static __u8 data[YAFFS_BYTES_PER_CHUNK]; /* Might as well always allocate the larger size for */ @@ -331,12 +331,12 @@ static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, * Functions for robustisizing */ -static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND) +static void yaffs_HandleReadDataError(yaffs_Device *dev, int chunkInNAND) { int blockInNAND = chunkInNAND / dev->nChunksPerBlock; /* Mark the block for retirement */ - yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1; + yaffs_GetBlockInfo(dev, blockInNAND + dev->blockOffset)->needsRetiring = 1; T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, (TSTR("**>>Block %d marked for retirement" TENDSTR), blockInNAND)); @@ -348,22 +348,22 @@ static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND) } #ifdef NOTYET -static void yaffs_CheckWrittenBlock(yaffs_Device * dev, int chunkInNAND) +static void yaffs_CheckWrittenBlock(yaffs_Device *dev, int chunkInNAND) { } -static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND, - const __u8 * data, - const yaffs_Spare * spare) +static void yaffs_HandleWriteChunkOk(yaffs_Device *dev, int chunkInNAND, + const __u8 *data, + const yaffs_Spare *spare) { } -static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND, - const yaffs_Spare * spare) +static void yaffs_HandleUpdateChunk(yaffs_Device *dev, int chunkInNAND, + const yaffs_Spare *spare) { } -static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND) +static void yaffs_HandleWriteChunkError(yaffs_Device *dev, int chunkInNAND) { int blockInNAND = chunkInNAND / dev->nChunksPerBlock; @@ -373,8 +373,8 @@ static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND) yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); } -static int yaffs_VerifyCompare(const __u8 * d0, const __u8 * d1, - const yaffs_Spare * s0, const yaffs_Spare * s1) +static int yaffs_VerifyCompare(const __u8 *d0, const __u8 *d1, + const yaffs_Spare *s0, const yaffs_Spare *s1) { if (memcmp(d0, d1, YAFFS_BYTES_PER_CHUNK) != 0 || @@ -398,28 +398,35 @@ static int yaffs_VerifyCompare(const __u8 * d0, const __u8 * d1, } #endif /* NOTYET */ -int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device * dev, - int chunkInNAND, - const __u8 * data, - const yaffs_ExtendedTags * - eTags) +int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev, + int chunkInNAND, + const __u8 *data, + const yaffs_ExtendedTags *eTags) { yaffs_Spare spare; yaffs_Tags tags; yaffs_SpareInitialise(&spare); - if (eTags->chunkDeleted) { + if (eTags->chunkDeleted) spare.pageStatus = 0; - } else { + else { tags.objectId = eTags->objectId; tags.chunkId = eTags->chunkId; - tags.byteCount = eTags->byteCount; + + tags.byteCountLSB = eTags->byteCount & 0x3ff; + + if (dev->nDataBytesPerChunk >= 1024) + tags.byteCountMSB = (eTags->byteCount >> 10) & 3; + else + tags.byteCountMSB = 3; + + tags.serialNumber = eTags->serialNumber; - if (!dev->useNANDECC && data) { + if (!dev->useNANDECC && data) yaffs_CalcECC(data, &spare); - } + yaffs_LoadTagsIntoSpare(&spare, &tags); } @@ -427,15 +434,15 @@ int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device * dev, return yaffs_WriteChunkToNAND(dev, chunkInNAND, data, &spare); } -int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device * dev, +int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev, int chunkInNAND, - __u8 * data, - yaffs_ExtendedTags * eTags) + __u8 *data, + yaffs_ExtendedTags *eTags) { yaffs_Spare spare; yaffs_Tags tags; - yaffs_ECCResult eccResult; + yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_UNKNOWN; static yaffs_Spare spareFF; static int init; @@ -466,7 +473,11 @@ int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device * dev, eTags->objectId = tags.objectId; eTags->chunkId = tags.chunkId; - eTags->byteCount = tags.byteCount; + eTags->byteCount = tags.byteCountLSB; + + if (dev->nDataBytesPerChunk >= 1024) + eTags->byteCount |= (((unsigned) tags.byteCountMSB) << 10); + eTags->serialNumber = tags.serialNumber; } } @@ -497,9 +508,9 @@ int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev, } int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev, - int blockNo, yaffs_BlockState * - state, - int *sequenceNumber) + int blockNo, + yaffs_BlockState *state, + __u32 *sequenceNumber) { yaffs_Spare spare0, spare1; |