diff options
Diffstat (limited to 'FatPkg/EnhancedFatDxe/DiskCache.c')
| -rw-r--r-- | FatPkg/EnhancedFatDxe/DiskCache.c | 152 |
1 files changed, 78 insertions, 74 deletions
diff --git a/FatPkg/EnhancedFatDxe/DiskCache.c b/FatPkg/EnhancedFatDxe/DiskCache.c index a488cd437d..d1a34a6a64 100644 --- a/FatPkg/EnhancedFatDxe/DiskCache.c +++ b/FatPkg/EnhancedFatDxe/DiskCache.c @@ -30,11 +30,11 @@ SPDX-License-Identifier: BSD-2-Clause-Patent STATIC
VOID
FatFlushDataCacheRange (
- IN FAT_VOLUME *Volume,
- IN IO_MODE IoMode,
- IN UINTN StartPageNo,
- IN UINTN EndPageNo,
- OUT UINT8 *Buffer
+ IN FAT_VOLUME *Volume,
+ IN IO_MODE IoMode,
+ IN UINTN StartPageNo,
+ IN UINTN EndPageNo,
+ OUT UINT8 *Buffer
)
{
UINTN PageNo;
@@ -53,9 +53,9 @@ FatFlushDataCacheRange ( PageSize = (UINTN)1 << PageAlignment;
for (PageNo = StartPageNo; PageNo < EndPageNo; PageNo++) {
- GroupNo = PageNo & GroupMask;
- CacheTag = &DiskCache->CacheTag[GroupNo];
- if (CacheTag->RealSize > 0 && CacheTag->PageNo == PageNo) {
+ GroupNo = PageNo & GroupMask;
+ CacheTag = &DiskCache->CacheTag[GroupNo];
+ if ((CacheTag->RealSize > 0) && (CacheTag->PageNo == PageNo)) {
//
// When reading data form disk directly, if some dirty data
// in cache is in this rang, this data in the Buffer need to
@@ -96,11 +96,11 @@ FatFlushDataCacheRange ( STATIC
EFI_STATUS
FatExchangeCachePage (
- IN FAT_VOLUME *Volume,
- IN CACHE_DATA_TYPE DataType,
- IN IO_MODE IoMode,
- IN CACHE_TAG *CacheTag,
- IN FAT_TASK *Task
+ IN FAT_VOLUME *Volume,
+ IN CACHE_DATA_TYPE DataType,
+ IN IO_MODE IoMode,
+ IN CACHE_TAG *CacheTag,
+ IN FAT_TASK *Task
)
{
EFI_STATUS Status;
@@ -122,16 +122,16 @@ FatExchangeCachePage ( EntryPos = DiskCache->BaseAddress + LShiftU64 (PageNo, PageAlignment);
RealSize = CacheTag->RealSize;
if (IoMode == ReadDisk) {
- RealSize = (UINTN)1 << PageAlignment;
- MaxSize = DiskCache->LimitAddress - EntryPos;
+ RealSize = (UINTN)1 << PageAlignment;
+ MaxSize = DiskCache->LimitAddress - EntryPos;
if (MaxSize < RealSize) {
DEBUG ((DEBUG_INFO, "FatDiskIo: Cache Page OutBound occurred! \n"));
- RealSize = (UINTN) MaxSize;
+ RealSize = (UINTN)MaxSize;
}
}
WriteCount = 1;
- if (DataType == CacheFat && IoMode == WriteDisk) {
+ if ((DataType == CacheFat) && (IoMode == WriteDisk)) {
WriteCount = Volume->NumFats;
}
@@ -147,8 +147,8 @@ FatExchangeCachePage ( EntryPos += Volume->FatSize;
} while (--WriteCount > 0);
- CacheTag->Dirty = FALSE;
- CacheTag->RealSize = RealSize;
+ CacheTag->Dirty = FALSE;
+ CacheTag->RealSize = RealSize;
return EFI_SUCCESS;
}
@@ -168,17 +168,17 @@ FatExchangeCachePage ( STATIC
EFI_STATUS
FatGetCachePage (
- IN FAT_VOLUME *Volume,
- IN CACHE_DATA_TYPE CacheDataType,
- IN UINTN PageNo,
- IN CACHE_TAG *CacheTag
+ IN FAT_VOLUME *Volume,
+ IN CACHE_DATA_TYPE CacheDataType,
+ IN UINTN PageNo,
+ IN CACHE_TAG *CacheTag
)
{
EFI_STATUS Status;
UINTN OldPageNo;
OldPageNo = CacheTag->PageNo;
- if (CacheTag->RealSize > 0 && OldPageNo == PageNo) {
+ if ((CacheTag->RealSize > 0) && (OldPageNo == PageNo)) {
//
// Cache Hit occurred
//
@@ -188,17 +188,18 @@ FatGetCachePage ( //
// Write dirty cache page back to disk
//
- if (CacheTag->RealSize > 0 && CacheTag->Dirty) {
+ if ((CacheTag->RealSize > 0) && CacheTag->Dirty) {
Status = FatExchangeCachePage (Volume, CacheDataType, WriteDisk, CacheTag, NULL);
if (EFI_ERROR (Status)) {
return Status;
}
}
+
//
// Load new data from disk;
//
- CacheTag->PageNo = PageNo;
- Status = FatExchangeCachePage (Volume, CacheDataType, ReadDisk, CacheTag, NULL);
+ CacheTag->PageNo = PageNo;
+ Status = FatExchangeCachePage (Volume, CacheDataType, ReadDisk, CacheTag, NULL);
return Status;
}
@@ -223,13 +224,13 @@ FatGetCachePage ( STATIC
EFI_STATUS
FatAccessUnalignedCachePage (
- IN FAT_VOLUME *Volume,
- IN CACHE_DATA_TYPE CacheDataType,
- IN IO_MODE IoMode,
- IN UINTN PageNo,
- IN UINTN Offset,
- IN UINTN Length,
- IN OUT VOID *Buffer
+ IN FAT_VOLUME *Volume,
+ IN CACHE_DATA_TYPE CacheDataType,
+ IN IO_MODE IoMode,
+ IN UINTN PageNo,
+ IN UINTN Offset,
+ IN UINTN Length,
+ IN OUT VOID *Buffer
)
{
EFI_STATUS Status;
@@ -247,10 +248,10 @@ FatAccessUnalignedCachePage ( Source = DiskCache->CacheBase + (GroupNo << DiskCache->PageAlignment) + Offset;
Destination = Buffer;
if (IoMode != ReadDisk) {
- CacheTag->Dirty = TRUE;
- DiskCache->Dirty = TRUE;
- Destination = Source;
- Source = Buffer;
+ CacheTag->Dirty = TRUE;
+ DiskCache->Dirty = TRUE;
+ Destination = Source;
+ Source = Buffer;
}
CopyMem (Destination, Source, Length);
@@ -290,13 +291,13 @@ FatAccessUnalignedCachePage ( **/
EFI_STATUS
FatAccessCache (
- IN FAT_VOLUME *Volume,
- IN CACHE_DATA_TYPE CacheDataType,
- IN IO_MODE IoMode,
- IN UINT64 Offset,
- IN UINTN BufferSize,
- IN OUT UINT8 *Buffer,
- IN FAT_TASK *Task
+ IN FAT_VOLUME *Volume,
+ IN CACHE_DATA_TYPE CacheDataType,
+ IN IO_MODE IoMode,
+ IN UINT64 Offset,
+ IN UINTN BufferSize,
+ IN OUT UINT8 *Buffer,
+ IN FAT_TASK *Task
)
{
EFI_STATUS Status;
@@ -319,8 +320,8 @@ FatAccessCache ( EntryPos = Offset - DiskCache->BaseAddress;
PageAlignment = DiskCache->PageAlignment;
PageSize = (UINTN)1 << PageAlignment;
- PageNo = (UINTN) RShiftU64 (EntryPos, PageAlignment);
- UnderRun = ((UINTN) EntryPos) & (PageSize - 1);
+ PageNo = (UINTN)RShiftU64 (EntryPos, PageAlignment);
+ UnderRun = ((UINTN)EntryPos) & (PageSize - 1);
if (UnderRun > 0) {
Length = PageSize - UnderRun;
@@ -338,8 +339,8 @@ FatAccessCache ( PageNo++;
}
- AlignedPageCount = BufferSize >> PageAlignment;
- OverRunPageNo = PageNo + AlignedPageCount;
+ AlignedPageCount = BufferSize >> PageAlignment;
+ OverRunPageNo = PageNo + AlignedPageCount;
//
// The access of the Aligned data
//
@@ -355,14 +356,16 @@ FatAccessCache ( if (EFI_ERROR (Status)) {
return Status;
}
+
//
// If these access data over laps the relative cache range, these cache pages need
// to be updated.
//
FatFlushDataCacheRange (Volume, IoMode, PageNo, OverRunPageNo, Buffer);
- Buffer += AlignedSize;
- BufferSize -= AlignedSize;
+ Buffer += AlignedSize;
+ BufferSize -= AlignedSize;
}
+
//
// The access of the OverRun data
//
@@ -390,18 +393,18 @@ FatAccessCache ( **/
EFI_STATUS
FatVolumeFlushCache (
- IN FAT_VOLUME *Volume,
- IN FAT_TASK *Task
+ IN FAT_VOLUME *Volume,
+ IN FAT_TASK *Task
)
{
- EFI_STATUS Status;
- CACHE_DATA_TYPE CacheDataType;
- UINTN GroupIndex;
- UINTN GroupMask;
- DISK_CACHE *DiskCache;
- CACHE_TAG *CacheTag;
-
- for (CacheDataType = (CACHE_DATA_TYPE) 0; CacheDataType < CacheMaxType; CacheDataType++) {
+ EFI_STATUS Status;
+ CACHE_DATA_TYPE CacheDataType;
+ UINTN GroupIndex;
+ UINTN GroupMask;
+ DISK_CACHE *DiskCache;
+ CACHE_TAG *CacheTag;
+
+ for (CacheDataType = (CACHE_DATA_TYPE)0; CacheDataType < CacheMaxType; CacheDataType++) {
DiskCache = &Volume->DiskCache[CacheDataType];
if (DiskCache->Dirty) {
//
@@ -410,7 +413,7 @@ FatVolumeFlushCache ( GroupMask = DiskCache->GroupMask;
for (GroupIndex = 0; GroupIndex <= GroupMask; GroupIndex++) {
CacheTag = &DiskCache->CacheTag[GroupIndex];
- if (CacheTag->RealSize > 0 && CacheTag->Dirty) {
+ if ((CacheTag->RealSize > 0) && CacheTag->Dirty) {
//
// Write back all Dirty Data Cache Page to disk
//
@@ -424,6 +427,7 @@ FatVolumeFlushCache ( DiskCache->Dirty = FALSE;
}
}
+
//
// Flush the block device.
//
@@ -443,7 +447,7 @@ FatVolumeFlushCache ( **/
EFI_STATUS
FatInitializeDiskCache (
- IN FAT_VOLUME *Volume
+ IN FAT_VOLUME *Volume
)
{
DISK_CACHE *DiskCache;
@@ -457,23 +461,23 @@ FatInitializeDiskCache ( // Configure the parameters of disk cache
//
if (Volume->FatType == Fat12) {
- FatCacheGroupCount = FAT_FATCACHE_GROUP_MIN_COUNT;
+ FatCacheGroupCount = FAT_FATCACHE_GROUP_MIN_COUNT;
DiskCache[CacheFat].PageAlignment = FAT_FATCACHE_PAGE_MIN_ALIGNMENT;
DiskCache[CacheData].PageAlignment = FAT_DATACACHE_PAGE_MIN_ALIGNMENT;
} else {
- FatCacheGroupCount = FAT_FATCACHE_GROUP_MAX_COUNT;
+ FatCacheGroupCount = FAT_FATCACHE_GROUP_MAX_COUNT;
DiskCache[CacheFat].PageAlignment = FAT_FATCACHE_PAGE_MAX_ALIGNMENT;
DiskCache[CacheData].PageAlignment = FAT_DATACACHE_PAGE_MAX_ALIGNMENT;
}
- DiskCache[CacheData].GroupMask = FAT_DATACACHE_GROUP_COUNT - 1;
- DiskCache[CacheData].BaseAddress = Volume->RootPos;
- DiskCache[CacheData].LimitAddress = Volume->VolumeSize;
- DiskCache[CacheFat].GroupMask = FatCacheGroupCount - 1;
- DiskCache[CacheFat].BaseAddress = Volume->FatPos;
- DiskCache[CacheFat].LimitAddress = Volume->FatPos + Volume->FatSize;
- FatCacheSize = FatCacheGroupCount << DiskCache[CacheFat].PageAlignment;
- DataCacheSize = FAT_DATACACHE_GROUP_COUNT << DiskCache[CacheData].PageAlignment;
+ DiskCache[CacheData].GroupMask = FAT_DATACACHE_GROUP_COUNT - 1;
+ DiskCache[CacheData].BaseAddress = Volume->RootPos;
+ DiskCache[CacheData].LimitAddress = Volume->VolumeSize;
+ DiskCache[CacheFat].GroupMask = FatCacheGroupCount - 1;
+ DiskCache[CacheFat].BaseAddress = Volume->FatPos;
+ DiskCache[CacheFat].LimitAddress = Volume->FatPos + Volume->FatSize;
+ FatCacheSize = FatCacheGroupCount << DiskCache[CacheFat].PageAlignment;
+ DataCacheSize = FAT_DATACACHE_GROUP_COUNT << DiskCache[CacheData].PageAlignment;
//
// Allocate the Fat Cache buffer
//
@@ -482,7 +486,7 @@ FatInitializeDiskCache ( return EFI_OUT_OF_RESOURCES;
}
- Volume->CacheBuffer = CacheBuffer;
+ Volume->CacheBuffer = CacheBuffer;
DiskCache[CacheFat].CacheBase = CacheBuffer;
DiskCache[CacheData].CacheBase = CacheBuffer + FatCacheSize;
return EFI_SUCCESS;
|