X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/b78fbb9510cb5f9b682ffa1e59249f1c3429ea34..c0d013dd1b33bcab1abb0729aa2585f8631fd27f:/target/linux/generic-2.6/files/fs/yaffs2/yaffs_guts.h diff --git a/target/linux/generic-2.6/files/fs/yaffs2/yaffs_guts.h b/target/linux/generic-2.6/files/fs/yaffs2/yaffs_guts.h index 59c6e75ac..ea06c1a38 100644 --- a/target/linux/generic-2.6/files/fs/yaffs2/yaffs_guts.h +++ b/target/linux/generic-2.6/files/fs/yaffs2/yaffs_guts.h @@ -1,5 +1,5 @@ /* - * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. * * Copyright (C) 2002-2007 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering @@ -22,11 +22,11 @@ #define YAFFS_OK 1 #define YAFFS_FAIL 0 -/* Give us a Y=0x59, - * Give us an A=0x41, - * Give us an FF=0xFF +/* Give us a Y=0x59, + * Give us an A=0x41, + * Give us an FF=0xFF * Give us an S=0x53 - * And what have we got... + * And what have we got... */ #define YAFFS_MAGIC 0x5941FF53 @@ -102,7 +102,7 @@ * The range is limited slightly to help distinguish bad numbers from good. * This also allows us to perhaps in the future use special numbers for * special purposes. - * EFFFFF00 allows the allocation of 8 blocks per second (~1Mbytes) for 15 years, + * EFFFFF00 allows the allocation of 8 blocks per second (~1Mbytes) for 15 years, * and is a larger number than the lifetime of a 2GB device. */ #define YAFFS_LOWEST_SEQUENCE_NUMBER 0x00001000 @@ -178,7 +178,7 @@ typedef struct { /* The following stuff only has meaning when we read */ yaffs_ECCResult eccResult; - unsigned blockBad; + unsigned blockBad; /* YAFFS 1 stuff */ unsigned chunkDeleted; /* The chunk is marked deleted */ @@ -244,29 +244,29 @@ typedef enum { /* This block is empty */ YAFFS_BLOCK_STATE_ALLOCATING, - /* This block is partially allocated. + /* This block is partially allocated. * At least one page holds valid data. * This is the one currently being used for page * allocation. Should never be more than one of these */ - YAFFS_BLOCK_STATE_FULL, + YAFFS_BLOCK_STATE_FULL, /* All the pages in this block have been allocated. */ YAFFS_BLOCK_STATE_DIRTY, - /* All pages have been allocated and deleted. + /* All pages have been allocated and deleted. * Erase me, reuse me. */ - YAFFS_BLOCK_STATE_CHECKPOINT, + YAFFS_BLOCK_STATE_CHECKPOINT, /* This block is assigned to holding checkpoint data. */ - YAFFS_BLOCK_STATE_COLLECTING, + YAFFS_BLOCK_STATE_COLLECTING, /* This block is being garbage collected */ - YAFFS_BLOCK_STATE_DEAD + YAFFS_BLOCK_STATE_DEAD /* This block has failed and is not in use */ } yaffs_BlockState; @@ -281,7 +281,7 @@ typedef struct { __u32 needsRetiring:1; /* Data has failed on this block, need to get valid data off */ /* and retire the block. */ __u32 skipErasedCheck: 1; /* If this is set we can skip the erased check on this block */ - __u32 gcPrioritise: 1; /* An ECC check or blank check has failed on this block. + __u32 gcPrioritise: 1; /* An ECC check or blank check has failed on this block. It should be prioritised for GC */ __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */ @@ -408,7 +408,7 @@ struct yaffs_ObjectStruct { __u8 renameAllowed:1; /* Some objects are not allowed to be renamed. */ __u8 unlinkAllowed:1; __u8 dirty:1; /* the object needs to be written to flash */ - __u8 valid:1; /* When the file system is being loaded up, this + __u8 valid:1; /* When the file system is being loaded up, this * object might be created before the data * is available (ie. file data records appear before the header). */ @@ -430,11 +430,11 @@ struct yaffs_ObjectStruct { /* directory structure stuff */ /* also used for linking up the free list */ - struct yaffs_ObjectStruct *parent; + struct yaffs_ObjectStruct *parent; struct list_head siblings; /* Where's my object header in NAND? */ - int chunkId; + int chunkId; int nDataChunks; /* Number of data chunks attached to the file. */ @@ -490,26 +490,26 @@ typedef struct { } yaffs_ObjectBucket; -/* yaffs_CheckpointObject holds the definition of an object as dumped +/* yaffs_CheckpointObject holds the definition of an object as dumped * by checkpointing. */ typedef struct { int structType; - __u32 objectId; + __u32 objectId; __u32 parentId; int chunkId; - + yaffs_ObjectType variantType:3; - __u8 deleted:1; - __u8 softDeleted:1; - __u8 unlinked:1; - __u8 fake:1; + __u8 deleted:1; + __u8 softDeleted:1; + __u8 unlinked:1; + __u8 fake:1; __u8 renameAllowed:1; __u8 unlinkAllowed:1; - __u8 serial; - - int nDataChunks; + __u8 serial; + + int nDataChunks; __u32 fileSizeOrEquivalentObjectId; }yaffs_CheckpointObject; @@ -539,14 +539,14 @@ struct yaffs_DeviceStruct { int endBlock; /* End block we're allowed to use */ int nReservedBlocks; /* We want this tuneable so that we can reduce */ /* reserved blocks on NOR and RAM. */ - - + + /* Stuff used by the shared space checkpointing mechanism */ /* If this value is zero, then this mechanism is disabled */ - + int nCheckpointReservedBlocks; /* Blocks to reserve for checkpoint data */ - + int nShortOpCaches; /* If <= 0, then short op caching is disabled, else @@ -561,7 +561,7 @@ struct yaffs_DeviceStruct { * On an mtd this holds the mtd pointer. */ void *superBlock; - + /* NAND access functions (Must be set before calling YAFFS)*/ int (*writeChunkToNAND) (struct yaffs_DeviceStruct * dev, @@ -587,21 +587,21 @@ struct yaffs_DeviceStruct { #endif int isYaffs2; - - /* The removeObjectCallback function must be supplied by OS flavours that + + /* The removeObjectCallback function must be supplied by OS flavours that * need it. The Linux kernel does not use this, but yaffs direct does use * it to implement the faster readdir */ void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj); - + /* Callback to mark the superblock dirsty */ void (*markSuperBlockDirty)(void * superblock); - + int wideTnodesDisabled; /* Set to disable wide tnodes */ - + /* End of stuff that must be set before initialisation. */ - + /* Checkpoint control. Can be set before or after initialisation */ __u8 skipCheckpointRead; __u8 skipCheckpointWrite; @@ -610,34 +610,34 @@ struct yaffs_DeviceStruct { __u16 chunkGroupBits; /* 0 for devices <= 32MB. else log2(nchunks) - 16 */ __u16 chunkGroupSize; /* == 2^^chunkGroupBits */ - + /* Stuff to support wide tnodes */ __u32 tnodeWidth; __u32 tnodeMask; - + /* Stuff to support various file offses to chunk/offset translations */ /* "Crumbs" for nDataBytesPerChunk not being a power of 2 */ __u32 crumbMask; __u32 crumbShift; __u32 crumbsPerChunk; - + /* Straight shifting for nDataBytesPerChunk being a power of 2 */ __u32 chunkShift; __u32 chunkMask; - + #ifdef __KERNEL__ struct semaphore sem; /* Semaphore for waiting on erasure.*/ struct semaphore grossLock; /* Gross locking semaphore */ - __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer + __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer * at compile time so we have to allocate it. */ void (*putSuperFunc) (struct super_block * sb); #endif int isMounted; - + int isCheckpointed; @@ -646,7 +646,7 @@ struct yaffs_DeviceStruct { int internalEndBlock; int blockOffset; int chunkOffset; - + /* Runtime checkpointing stuff */ int checkpointPageSequence; /* running sequence number of checkpoint pages */ @@ -662,13 +662,13 @@ struct yaffs_DeviceStruct { int checkpointMaxBlocks; __u32 checkpointSum; __u32 checkpointXor; - + /* Block Info */ yaffs_BlockInfo *blockInfo; __u8 *chunkBits; /* bitmap of chunks in use */ unsigned blockInfoAlt:1; /* was allocated using alternative strategy */ unsigned chunkBitsAlt:1; /* was allocated using alternative strategy */ - int chunkBitmapStride; /* Number of bytes of chunkBits per block. + int chunkBitmapStride; /* Number of bytes of chunkBits per block. * Must be consistent with nChunksPerBlock. */ @@ -716,7 +716,7 @@ struct yaffs_DeviceStruct { int tagsEccUnfixed; int nDeletions; int nUnmarkedDeletions; - + int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */ /* Special directories */ @@ -727,7 +727,7 @@ struct yaffs_DeviceStruct { * __u8 bufferedData[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK]; * yaffs_Spare bufferedSpare[YAFFS_CHUNKS_PER_BLOCK]; */ - + int bufferedBlock; /* Which block is buffered here? */ int doingBufferedBlockRewrite; @@ -768,7 +768,7 @@ typedef struct { int endBlock; int rfu[100]; } yaffs_SuperBlockHeader; - + /* The CheckpointDevice structure holds the device information that changes at runtime and * must be preserved over unmount/mount cycles. */