Lines Matching refs:dev
22 static int yaffs_CheckpointSpaceOk(yaffs_Device *dev)
25 int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
37 static int yaffs_CheckpointErase(yaffs_Device *dev)
43 if(!dev->eraseBlockInNAND)
46 dev->startBlock,dev->endBlock));
48 for(i = dev->startBlock; i <= dev->endBlock; i++) {
49 yaffs_BlockInfo *bi = &dev->blockInfo[i];
52 if(dev->eraseBlockInNAND(dev,i)){
54 dev->nErasedBlocks++;
55 dev->nFreeChunks += dev->nChunksPerBlock;
58 dev->markNANDBlockBad(dev,i);
64 dev->blocksInCheckpoint = 0;
70 static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev)
73 int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
75 if(dev->checkpointNextBlock >= 0 &&
76 dev->checkpointNextBlock <= dev->endBlock &&
79 for(i = dev->checkpointNextBlock; i <= dev->endBlock; i++){
80 yaffs_BlockInfo *bi = &dev->blockInfo[i];
82 dev->checkpointNextBlock = i + 1;
83 dev->checkpointCurrentBlock = i;
91 dev->checkpointNextBlock = -1;
92 dev->checkpointCurrentBlock = -1;
95 static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev)
100 if(dev->blocksInCheckpoint < dev->checkpointMaxBlocks)
101 for(i = dev->checkpointNextBlock; i <= dev->endBlock; i++){
102 int chunk = i * dev->nChunksPerBlock;
104 dev->readChunkWithTagsFromNAND(dev,chunk,NULL,&tags);
108 dev->checkpointNextBlock = tags.objectId;
109 dev->checkpointCurrentBlock = i;
110 dev->checkpointBlockList[dev->blocksInCheckpoint] = i;
111 dev->blocksInCheckpoint++;
119 dev->checkpointNextBlock = -1;
120 dev->checkpointCurrentBlock = -1;
124 int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting)
128 if (!dev->writeChunkWithTagsToNAND ||
129 !dev->readChunkWithTagsFromNAND ||
130 !dev->eraseBlockInNAND ||
131 !dev->markNANDBlockBad)
134 if(forWriting && !yaffs_CheckpointSpaceOk(dev))
137 if(!dev->checkpointBuffer)
138 dev->checkpointBuffer = YMALLOC_DMA(dev->nDataBytesPerChunk);
139 if(!dev->checkpointBuffer)
143 dev->checkpointPageSequence = 0;
145 dev->checkpointOpenForWrite = forWriting;
147 dev->checkpointByteCount = 0;
148 dev->checkpointCurrentBlock = -1;
149 dev->checkpointCurrentChunk = -1;
150 dev->checkpointNextBlock = dev->startBlock;
154 memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk);
155 dev->checkpointByteOffset = 0;
156 return yaffs_CheckpointErase(dev);
162 dev->checkpointByteOffset = dev->nDataBytesPerChunk;
165 dev->blocksInCheckpoint = 0;
166 dev->checkpointMaxBlocks = (dev->endBlock - dev->startBlock)/16 + 2;
167 dev->checkpointBlockList = YMALLOC(sizeof(int) * dev->checkpointMaxBlocks);
168 for(i = 0; i < dev->checkpointMaxBlocks; i++)
169 dev->checkpointBlockList[i] = -1;
175 static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev)
182 if(dev->checkpointCurrentBlock < 0){
183 yaffs_CheckpointFindNextErasedBlock(dev);
184 dev->checkpointCurrentChunk = 0;
187 if(dev->checkpointCurrentBlock < 0)
191 tags.objectId = dev->checkpointNextBlock; /* Hint to next place to look */
192 tags.chunkId = dev->checkpointPageSequence + 1;
194 tags.byteCount = dev->nDataBytesPerChunk;
195 if(dev->checkpointCurrentChunk == 0){
198 yaffs_BlockInfo *bi = &dev->blockInfo[dev->checkpointCurrentBlock];
200 dev->blocksInCheckpoint++;
203 chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk;
205 dev->writeChunkWithTagsToNAND(dev,chunk,dev->checkpointBuffer,&tags);
206 dev->checkpointByteOffset = 0;
207 dev->checkpointPageSequence++;
208 dev->checkpointCurrentChunk++;
209 if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock){
210 dev->checkpointCurrentChunk = 0;
211 dev->checkpointCurrentBlock = -1;
213 memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk);
219 int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes)
229 if(!dev->checkpointBuffer)
236 dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes ;
237 dev->checkpointByteOffset++;
240 dev->checkpointByteCount++;
243 if(dev->checkpointByteOffset < 0 ||
244 dev->checkpointByteOffset >= dev->nDataBytesPerChunk)
245 ok = yaffs_CheckpointFlushBuffer(dev);
252 int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
263 if(!dev->checkpointBuffer)
269 if(dev->checkpointByteOffset < 0 ||
270 dev->checkpointByteOffset >= dev->nDataBytesPerChunk) {
272 if(dev->checkpointCurrentBlock < 0){
273 yaffs_CheckpointFindNextCheckpointBlock(dev);
274 dev->checkpointCurrentChunk = 0;
277 if(dev->checkpointCurrentBlock < 0)
281 chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock +
282 dev->checkpointCurrentChunk;
285 /* printf("read checkpoint page %d\n",dev->checkpointPage); */
286 dev->readChunkWithTagsFromNAND(dev, chunk,
287 dev->checkpointBuffer,
290 if(tags.chunkId != (dev->checkpointPageSequence + 1) ||
294 dev->checkpointByteOffset = 0;
295 dev->checkpointPageSequence++;
296 dev->checkpointCurrentChunk++;
298 if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock)
299 dev->checkpointCurrentBlock = -1;
304 *dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset];
305 dev->checkpointByteOffset++;
308 dev->checkpointByteCount++;
315 int yaffs_CheckpointClose(yaffs_Device *dev)
318 if(dev->checkpointOpenForWrite){
319 if(dev->checkpointByteOffset != 0)
320 yaffs_CheckpointFlushBuffer(dev);
323 for(i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++){
324 yaffs_BlockInfo *bi = &dev->blockInfo[dev->checkpointBlockList[i]];
331 YFREE(dev->checkpointBlockList);
332 dev->checkpointBlockList = NULL;
335 dev->nFreeChunks -= dev->blocksInCheckpoint * dev->nChunksPerBlock;
336 dev->nErasedBlocks -= dev->blocksInCheckpoint;
340 dev->checkpointByteCount));
342 if(dev->checkpointBuffer){
344 YFREE(dev->checkpointBuffer);
345 dev->checkpointBuffer = NULL;
353 int yaffs_CheckpointInvalidateStream(yaffs_Device *dev)
359 if(!yaffs_CheckpointSpaceOk(dev))
362 return yaffs_CheckpointErase(dev);