summaryrefslogtreecommitdiff
path: root/fs/yaffs2/yaffs_guts.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/yaffs2/yaffs_guts.h')
-rw-r--r--fs/yaffs2/yaffs_guts.h112
1 files changed, 56 insertions, 56 deletions
diff --git a/fs/yaffs2/yaffs_guts.h b/fs/yaffs2/yaffs_guts.h
index ecf701f..1f75efd 100644
--- a/fs/yaffs2/yaffs_guts.h
+++ b/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;
@@ -279,11 +279,11 @@ typedef struct {
int pagesInUse:10; /* number of pages in use */
unsigned blockState:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */
__u32 needsRetiring:1; /* Data has failed on this block, need to get valid data off */
- /* and retire the block. */
+ /* 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 */
+ __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
#ifdef CONFIG_YAFFS_YAFFS2
__u32 hasShrinkHeader:1; /* This block has at least one shrink object header */
@@ -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. */
@@ -491,26 +491,26 @@ 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;
+ int structType;
+ __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;
@@ -540,14 +540,14 @@ 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
@@ -561,8 +561,8 @@ struct yaffs_DeviceStruct {
void *genericDevice; /* Pointer to device context
* On an mtd this holds the mtd pointer.
*/
- void *superBlock;
-
+ void *superBlock;
+
/* NAND access functions (Must be set before calling YAFFS)*/
int (*writeChunkToNAND) (struct yaffs_DeviceStruct * dev,
@@ -588,21 +588,21 @@ 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;
@@ -611,21 +611,21 @@ 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;
-
+
/* XXX U-BOOT XXX */
#if 0
@@ -636,12 +636,12 @@ struct yaffs_DeviceStruct {
void (*putSuperFunc) (struct super_block * sb);
#endif
#endif
- __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.
*/
int isMounted;
-
+
int isCheckpointed;
@@ -650,7 +650,7 @@ struct yaffs_DeviceStruct {
int internalEndBlock;
int blockOffset;
int chunkOffset;
-
+
/* Runtime checkpointing stuff */
int checkpointPageSequence; /* running sequence number of checkpoint pages */
@@ -666,13 +666,13 @@ 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.
*/
@@ -720,7 +720,7 @@ struct yaffs_DeviceStruct {
int tagsEccUnfixed;
int nDeletions;
int nUnmarkedDeletions;
-
+
int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */
/* Special directories */
@@ -731,7 +731,7 @@ 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;
@@ -764,7 +764,7 @@ typedef struct yaffs_DeviceStruct yaffs_Device;
/* The static layout of bllock usage etc is stored in the super block header */
typedef struct {
- int StructType;
+ int StructType;
int version;
int checkpointStartBlock;
int checkpointEndBlock;
@@ -772,12 +772,12 @@ 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.
*/
typedef struct {
- int structType;
+ int structType;
int nErasedBlocks;
int allocationBlock; /* Current block being allocated off */
__u32 allocationPage;
generated by cgit v1.1 at 2024-11-25 17:21:07 +0000