generic: fold yaffs_cvs_2009_04_24 patch to generic/files

Signed-off-by: Gabor Juhos <juhosg@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34012 3c298f89-4303-0410-b956-a3cf2f4a3e73
2025-04-21 12:27:27 +03:00 · 2012-10-30 14:58:13 +00:00
parent 405e8aec86
commit 22c66493c9
35 changed files with 3171 additions and 27531 deletions
--- a/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c
@@ -12,48 +12,43 @@
 */

 const char *yaffs_checkptrw_c_version =
-    "$Id: yaffs_checkptrw.c,v 1.14 2007-05-15 20:07:40 charles Exp $";
+	"$Id: yaffs_checkptrw.c,v 1.18 2009-03-06 17:20:49 wookey Exp $";


 #include "yaffs_checkptrw.h"
-
+#include "yaffs_getblockinfo.h"

 static int yaffs_CheckpointSpaceOk(yaffs_Device *dev)
 {
-
 	int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;

 	T(YAFFS_TRACE_CHECKPOINT,
 		(TSTR("checkpt blocks available = %d" TENDSTR),
 		blocksAvailable));

-
 	return (blocksAvailable <= 0) ? 0 : 1;
 }


 static int yaffs_CheckpointErase(yaffs_Device *dev)
 {
-
 	int i;

-
-	if(!dev->eraseBlockInNAND)
+	if (!dev->eraseBlockInNAND)
 		return 0;
-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("checking blocks %d to %d"TENDSTR),
-		dev->internalStartBlock,dev->internalEndBlock));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checking blocks %d to %d"TENDSTR),
+		dev->internalStartBlock, dev->internalEndBlock));

-	for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
-		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
-		if(bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT){
-			T(YAFFS_TRACE_CHECKPOINT,(TSTR("erasing checkpt block %d"TENDSTR),i));
-			if(dev->eraseBlockInNAND(dev,i- dev->blockOffset /* realign */)){
+	for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
+		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
+		if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) {
+			T(YAFFS_TRACE_CHECKPOINT, (TSTR("erasing checkpt block %d"TENDSTR), i));
+			if (dev->eraseBlockInNAND(dev, i - dev->blockOffset /* realign */)) {
 				bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
 				dev->nErasedBlocks++;
 				dev->nFreeChunks += dev->nChunksPerBlock;
-			}
-			else {
-				dev->markNANDBlockBad(dev,i);
+			} else {
+				dev->markNANDBlockBad(dev, i);
 				bi->blockState = YAFFS_BLOCK_STATE_DEAD;
 			}
 		}
@@ -71,23 +66,23 @@ static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev)
 	int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
 	T(YAFFS_TRACE_CHECKPOINT,
 		(TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR),
-		dev->nErasedBlocks,dev->nReservedBlocks,blocksAvailable,dev->checkpointNextBlock));
+		dev->nErasedBlocks, dev->nReservedBlocks, blocksAvailable, dev->checkpointNextBlock));

-	if(dev->checkpointNextBlock >= 0 &&
-	   dev->checkpointNextBlock <= dev->internalEndBlock &&
-	   blocksAvailable > 0){
+	if (dev->checkpointNextBlock >= 0 &&
+			dev->checkpointNextBlock <= dev->internalEndBlock &&
+			blocksAvailable > 0) {

-		for(i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++){
-			yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
-			if(bi->blockState == YAFFS_BLOCK_STATE_EMPTY){
+		for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) {
+			yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i);
+			if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) {
 				dev->checkpointNextBlock = i + 1;
 				dev->checkpointCurrentBlock = i;
-				T(YAFFS_TRACE_CHECKPOINT,(TSTR("allocating checkpt block %d"TENDSTR),i));
+				T(YAFFS_TRACE_CHECKPOINT, (TSTR("allocating checkpt block %d"TENDSTR), i));
 				return;
 			}
 		}
 	}
-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("out of checkpt blocks"TENDSTR)));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("out of checkpt blocks"TENDSTR)));

 	dev->checkpointNextBlock = -1;
 	dev->checkpointCurrentBlock = -1;
@@ -98,30 +93,31 @@ static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev)
 	int  i;
 	yaffs_ExtendedTags tags;

-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: start:  blocks %d next %d" TENDSTR),
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: start:  blocks %d next %d" TENDSTR),
 		dev->blocksInCheckpoint, dev->checkpointNextBlock));

-	if(dev->blocksInCheckpoint < dev->checkpointMaxBlocks)
-		for(i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++){
+	if (dev->blocksInCheckpoint < dev->checkpointMaxBlocks)
+		for (i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++) {
 			int chunk = i * dev->nChunksPerBlock;
 			int realignedChunk = chunk - dev->chunkOffset;

-			dev->readChunkWithTagsFromNAND(dev,realignedChunk,NULL,&tags);
-			T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR),
-				i, tags.objectId,tags.sequenceNumber,tags.eccResult));
+			dev->readChunkWithTagsFromNAND(dev, realignedChunk,
+					NULL, &tags);
+			T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR),
+				i, tags.objectId, tags.sequenceNumber, tags.eccResult));

-			if(tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA){
+			if (tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) {
 				/* Right kind of block */
 				dev->checkpointNextBlock = tags.objectId;
 				dev->checkpointCurrentBlock = i;
 				dev->checkpointBlockList[dev->blocksInCheckpoint] = i;
 				dev->blocksInCheckpoint++;
-				T(YAFFS_TRACE_CHECKPOINT,(TSTR("found checkpt block %d"TENDSTR),i));
+				T(YAFFS_TRACE_CHECKPOINT, (TSTR("found checkpt block %d"TENDSTR), i));
 				return;
 			}
 		}

-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("found no more checkpt blocks"TENDSTR)));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("found no more checkpt blocks"TENDSTR)));

 	dev->checkpointNextBlock = -1;
 	dev->checkpointCurrentBlock = -1;
@@ -133,17 +129,17 @@ int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting)

 	/* Got the functions we need? */
 	if (!dev->writeChunkWithTagsToNAND ||
-	    !dev->readChunkWithTagsFromNAND ||
-	    !dev->eraseBlockInNAND ||
-	    !dev->markNANDBlockBad)
+			!dev->readChunkWithTagsFromNAND ||
+			!dev->eraseBlockInNAND ||
+			!dev->markNANDBlockBad)
 		return 0;

-	if(forWriting && !yaffs_CheckpointSpaceOk(dev))
+	if (forWriting && !yaffs_CheckpointSpaceOk(dev))
 		return 0;

-	if(!dev->checkpointBuffer)
-		dev->checkpointBuffer = YMALLOC_DMA(dev->nDataBytesPerChunk);
-	if(!dev->checkpointBuffer)
+	if (!dev->checkpointBuffer)
+		dev->checkpointBuffer = YMALLOC_DMA(dev->totalBytesPerChunk);
+	if (!dev->checkpointBuffer)
 		return 0;


@@ -159,12 +155,10 @@ int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting)
 	dev->checkpointNextBlock = dev->internalStartBlock;

 	/* Erase all the blocks in the checkpoint area */
-	if(forWriting){
-		memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk);
+	if (forWriting) {
+		memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk);
 		dev->checkpointByteOffset = 0;
 		return yaffs_CheckpointErase(dev);
-
-
 	} else {
 		int i;
 		/* Set to a value that will kick off a read */
@@ -174,7 +168,7 @@ int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting)
 		dev->blocksInCheckpoint = 0;
 		dev->checkpointMaxBlocks = (dev->internalEndBlock - dev->internalStartBlock)/16 + 2;
 		dev->checkpointBlockList = YMALLOC(sizeof(int) * dev->checkpointMaxBlocks);
-		for(i = 0; i < dev->checkpointMaxBlocks; i++)
+		for (i = 0; i < dev->checkpointMaxBlocks; i++)
 			dev->checkpointBlockList[i] = -1;
 	}

@@ -191,18 +185,17 @@ int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum)

 static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev)
 {
-
 	int chunk;
 	int realignedChunk;

 	yaffs_ExtendedTags tags;

-	if(dev->checkpointCurrentBlock < 0){
+	if (dev->checkpointCurrentBlock < 0) {
 		yaffs_CheckpointFindNextErasedBlock(dev);
 		dev->checkpointCurrentChunk = 0;
 	}

-	if(dev->checkpointCurrentBlock < 0)
+	if (dev->checkpointCurrentBlock < 0)
 		return 0;

 	tags.chunkDeleted = 0;
@@ -210,10 +203,10 @@ static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev)
 	tags.chunkId = dev->checkpointPageSequence + 1;
 	tags.sequenceNumber =  YAFFS_SEQUENCE_CHECKPOINT_DATA;
 	tags.byteCount = dev->nDataBytesPerChunk;
-	if(dev->checkpointCurrentChunk == 0){
+	if (dev->checkpointCurrentChunk == 0) {
 		/* First chunk we write for the block? Set block state to
 		   checkpoint */
-		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,dev->checkpointCurrentBlock);
+		yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointCurrentBlock);
 		bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
 		dev->blocksInCheckpoint++;
 	}
@@ -221,28 +214,29 @@ static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev)
 	chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk;


-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR),
-		chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk,tags.objectId,tags.chunkId));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR),
+		chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk, tags.objectId, tags.chunkId));

 	realignedChunk = chunk - dev->chunkOffset;

-	dev->writeChunkWithTagsToNAND(dev,realignedChunk,dev->checkpointBuffer,&tags);
+	dev->writeChunkWithTagsToNAND(dev, realignedChunk,
+			dev->checkpointBuffer, &tags);
 	dev->checkpointByteOffset = 0;
 	dev->checkpointPageSequence++;
 	dev->checkpointCurrentChunk++;
-	if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock){
+	if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock) {
 		dev->checkpointCurrentChunk = 0;
 		dev->checkpointCurrentBlock = -1;
 	}
-	memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk);
+	memset(dev->checkpointBuffer, 0, dev->nDataBytesPerChunk);

 	return 1;
 }


-int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes)
+int yaffs_CheckpointWrite(yaffs_Device *dev, const void *data, int nBytes)
 {
-	int i=0;
+	int i = 0;
 	int ok = 1;


@@ -250,17 +244,14 @@ int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes)



-	if(!dev->checkpointBuffer)
+	if (!dev->checkpointBuffer)
 		return 0;

-	if(!dev->checkpointOpenForWrite)
+	if (!dev->checkpointOpenForWrite)
 		return -1;

-	while(i < nBytes && ok) {
-
-
-
-		dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes ;
+	while (i < nBytes && ok) {
+		dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes;
 		dev->checkpointSum += *dataBytes;
 		dev->checkpointXor ^= *dataBytes;

@@ -270,18 +261,17 @@ int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes)
 		dev->checkpointByteCount++;


-		if(dev->checkpointByteOffset < 0 ||
+		if (dev->checkpointByteOffset < 0 ||
 		   dev->checkpointByteOffset >= dev->nDataBytesPerChunk)
 			ok = yaffs_CheckpointFlushBuffer(dev);
-
 	}

-	return 	i;
+	return i;
 }

 int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
 {
-	int i=0;
+	int i = 0;
 	int ok = 1;
 	yaffs_ExtendedTags tags;

@@ -291,52 +281,54 @@ int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)

 	__u8 *dataBytes = (__u8 *)data;

-	if(!dev->checkpointBuffer)
+	if (!dev->checkpointBuffer)
 		return 0;

-	if(dev->checkpointOpenForWrite)
+	if (dev->checkpointOpenForWrite)
 		return -1;

-	while(i < nBytes && ok) {
+	while (i < nBytes && ok) {


-		if(dev->checkpointByteOffset < 0 ||
-		   dev->checkpointByteOffset >= dev->nDataBytesPerChunk) {
+		if (dev->checkpointByteOffset < 0 ||
+			dev->checkpointByteOffset >= dev->nDataBytesPerChunk) {

-		   	if(dev->checkpointCurrentBlock < 0){
+			if (dev->checkpointCurrentBlock < 0) {
 				yaffs_CheckpointFindNextCheckpointBlock(dev);
 				dev->checkpointCurrentChunk = 0;
 			}

-			if(dev->checkpointCurrentBlock < 0)
+			if (dev->checkpointCurrentBlock < 0)
 				ok = 0;
 			else {
-
-				chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock +
-				          dev->checkpointCurrentChunk;
+				chunk = dev->checkpointCurrentBlock *
+					dev->nChunksPerBlock +
+					dev->checkpointCurrentChunk;

 				realignedChunk = chunk - dev->chunkOffset;

-	   			/* read in the next chunk */
-	   			/* printf("read checkpoint page %d\n",dev->checkpointPage); */
-				dev->readChunkWithTagsFromNAND(dev, realignedChunk,
-							       dev->checkpointBuffer,
-							      &tags);
+				/* read in the next chunk */
+				/* printf("read checkpoint page %d\n",dev->checkpointPage); */
+				dev->readChunkWithTagsFromNAND(dev,
+						realignedChunk,
+						dev->checkpointBuffer,
+						&tags);

-				if(tags.chunkId != (dev->checkpointPageSequence + 1) ||
-				   tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA)
-				   ok = 0;
+				if (tags.chunkId != (dev->checkpointPageSequence + 1) ||
+					tags.eccResult > YAFFS_ECC_RESULT_FIXED ||
+					tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA)
+					ok = 0;

 				dev->checkpointByteOffset = 0;
 				dev->checkpointPageSequence++;
 				dev->checkpointCurrentChunk++;

-				if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock)
+				if (dev->checkpointCurrentChunk >= dev->nChunksPerBlock)
 					dev->checkpointCurrentBlock = -1;
 			}
 		}

-		if(ok){
+		if (ok) {
 			*dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset];
 			dev->checkpointSum += *dataBytes;
 			dev->checkpointXor ^= *dataBytes;
@@ -353,17 +345,17 @@ int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
 int yaffs_CheckpointClose(yaffs_Device *dev)
 {

-	if(dev->checkpointOpenForWrite){
-		if(dev->checkpointByteOffset != 0)
+	if (dev->checkpointOpenForWrite) {
+		if (dev->checkpointByteOffset != 0)
 			yaffs_CheckpointFlushBuffer(dev);
 	} else {
 		int i;
-		for(i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++){
-			yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,dev->checkpointBlockList[i]);
-			if(bi->blockState == YAFFS_BLOCK_STATE_EMPTY)
+		for (i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++) {
+			yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, dev->checkpointBlockList[i]);
+			if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY)
 				bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
 			else {
-				// Todo this looks odd...
+				/* Todo this looks odd... */
 			}
 		}
 		YFREE(dev->checkpointBlockList);
@@ -374,27 +366,25 @@ int yaffs_CheckpointClose(yaffs_Device *dev)
 	dev->nErasedBlocks -= dev->blocksInCheckpoint;


-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint byte count %d" TENDSTR),
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint byte count %d" TENDSTR),
 			dev->checkpointByteCount));

-	if(dev->checkpointBuffer){
+	if (dev->checkpointBuffer) {
 		/* free the buffer */
 		YFREE(dev->checkpointBuffer);
 		dev->checkpointBuffer = NULL;
 		return 1;
-	}
-	else
+	} else
 		return 0;
-
 }

 int yaffs_CheckpointInvalidateStream(yaffs_Device *dev)
 {
 	/* Erase the first checksum block */

-	T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint invalidate"TENDSTR)));
+	T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate"TENDSTR)));

-	if(!yaffs_CheckpointSpaceOk(dev))
+	if (!yaffs_CheckpointSpaceOk(dev))
 		return 0;

 	return yaffs_CheckpointErase(dev);