MdeModulePkg DxeCore: Don't cache memory mapped IO FV.

Previous DxeCore FwVol code will cache whole FvMain FV from flash that may be
uncached if platform reports FvMain FVB, it will impact DXE performance.

The code already has file level cache, so don’t need to cache memory mapped IO FV.
It can also reduce memory consumption of caching memory mapped IO FVs.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15916 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Core/Dxe/DxeMain.h

@@ -2,7 +2,7 @@
   The internal header file includes the common header files, defines
   internal structure and functions used by DxeCore module.
 
-Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -2356,6 +2356,8 @@ GetSection (
   SEP member function.  Deletes an existing section stream
 
   @param  StreamHandleToClose    Indicates the stream to close
+  @param  FreeStreamBuffer       TRUE - Need to free stream buffer;
+                                 FALSE - No need to free stream buffer.
 
   @retval EFI_SUCCESS            The section stream is closed sucessfully.
   @retval EFI_OUT_OF_RESOURCES   Memory allocation failed.
@@ -2366,7 +2368,8 @@ GetSection (
 EFI_STATUS
 EFIAPI
 CloseSectionStream (
-  IN  UINTN                                     StreamHandleToClose
+  IN  UINTN                                     StreamHandleToClose,
+  IN  BOOLEAN                                   FreeStreamBuffer
   );
 
 /**

MdeModulePkg/Core/Dxe/FwVol/FwVol.c

@@ -3,7 +3,7 @@
   Layers on top of Firmware Block protocol to produce a file abstraction
   of FV based files.
 
-Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -46,8 +46,9 @@ FV_DEVICE mFvDevice = {
   NULL,
   { NULL, NULL },
   0,
+  0,
   FALSE,
-  0
+  FALSE
 };
 
 
@@ -254,7 +255,14 @@ FreeFvDeviceResource (
       //
       // Close stream and free resources from SEP
       //
-      CloseSectionStream (FfsFileEntry->StreamHandle);
+      CloseSectionStream (FfsFileEntry->StreamHandle, FALSE);
+    }
+
+    if (FfsFileEntry->FileCached) {
+      //
+      // Free the cached file buffer.
+      //
+      CoreFreePool (FfsFileEntry->FfsHeader);
     }
 
     CoreFreePool (FfsFileEntry);
@@ -262,11 +270,12 @@ FreeFvDeviceResource (
     FfsFileEntry = (FFS_FILE_LIST_ENTRY *) NextEntry;
   }
 
-
+  if (!FvDevice->IsMemoryMapped) {
     //
-  // Free the cache
+    // Free the cached FV buffer.
     //
     CoreFreePool (FvDevice->CachedFv);
+  }
 
   //
   // Free Volume Header
@@ -310,7 +319,7 @@ FvCheck (
   EFI_FFS_FILE_STATE                    FileState;
   UINT8                                 *TopFvAddress;
   UINTN                                 TestLength;
-
+  EFI_PHYSICAL_ADDRESS                  PhysicalAddress;
 
   Fvb = FvDevice->Fvb;
   FwVolHeader = FvDevice->FwVolHeader;
@@ -325,17 +334,33 @@ FvCheck (
   // the header to check to make sure the volume is valid
   //
   Size = (UINTN)(FwVolHeader->FvLength - FwVolHeader->HeaderLength);
+  if ((FvbAttributes & EFI_FVB2_MEMORY_MAPPED) != 0) {
+    FvDevice->IsMemoryMapped = TRUE;
+
+    Status = Fvb->GetPhysicalAddress (Fvb, &PhysicalAddress);
+    if (EFI_ERROR (Status)) {
+      return Status;
+    }
+
+    //
+    // Don't cache memory mapped FV really.
+    //
+    FvDevice->CachedFv = (UINT8 *) (UINTN) (PhysicalAddress + FwVolHeader->HeaderLength);
+  } else {
+    FvDevice->IsMemoryMapped = FALSE;
     FvDevice->CachedFv = AllocatePool (Size);
 
     if (FvDevice->CachedFv == NULL) {
       return EFI_OUT_OF_RESOURCES;
     }
+  }
 
   //
   // Remember a pointer to the end fo the CachedFv
   //
   FvDevice->EndOfCachedFv = FvDevice->CachedFv + Size;
 
+  if (!FvDevice->IsMemoryMapped) {
     //
     // Copy FV minus header into memory using the block map we have all ready
     // read into memory.
@@ -400,6 +425,7 @@ FvCheck (
 
       BlockMap++;
     }
+  }
 
   //
   // Scan to check the free space & File list

MdeModulePkg/Core/Dxe/FwVol/FwVolDriver.h

@@ -2,7 +2,7 @@
   Firmware File System protocol. Layers on top of Firmware
   Block protocol to produce a file abstraction of FV based files.
 
-Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -26,6 +26,7 @@ typedef struct {
   LIST_ENTRY                      Link;
   EFI_FFS_FILE_HEADER             *FfsHeader;
   UINTN                           StreamHandle;
+  BOOLEAN                         FileCached;
 } FFS_FILE_LIST_ENTRY;
 
 typedef struct {
@@ -42,9 +43,10 @@ typedef struct {
 
   LIST_ENTRY                              FfsFileListHeader;
 
+  UINT32                                  AuthenticationStatus;
   UINT8                                   ErasePolarity;
   BOOLEAN                                 IsFfs3Fv;
-  UINT32                                  AuthenticationStatus;
+  BOOLEAN                                 IsMemoryMapped;
 } FV_DEVICE;
 
 #define FV_DEVICE_FROM_THIS(a) CR(a, FV_DEVICE, Fv, FV2_DEVICE_SIGNATURE)

MdeModulePkg/Core/Dxe/FwVol/FwVolRead.c

@@ -280,6 +280,7 @@ FvReadFile (
   UINT8                             *SrcPtr;
   EFI_FFS_FILE_HEADER               *FfsHeader;
   UINTN                             InputBufferSize;
+  UINTN                             WholeFileSize;
 
   if (NameGuid == NULL) {
     return EFI_INVALID_PARAMETER;
@@ -290,7 +291,7 @@ FvReadFile (
 
   //
   // Keep looking until we find the matching NameGuid.
-  // The Key is really an FfsFileEntry
+  // The Key is really a FfsFileEntry
   //
   FvDevice->LastKey = 0;
   do {
@@ -312,6 +313,26 @@ FvReadFile (
   // Get a pointer to the header
   //
   FfsHeader = FvDevice->LastKey->FfsHeader;
+  if (FvDevice->IsMemoryMapped) {
+    //
+    // Memory mapped FV has not been cached, so here is to cache by file.
+    //
+    if (!FvDevice->LastKey->FileCached) {
+      //
+      // Cache FFS file to memory buffer.
+      //
+      WholeFileSize = IS_FFS_FILE2 (FfsHeader) ? FFS_FILE2_SIZE (FfsHeader): FFS_FILE_SIZE (FfsHeader);
+      FfsHeader = AllocateCopyPool (WholeFileSize, FfsHeader);
+      if (FfsHeader == NULL) {
+        return EFI_OUT_OF_RESOURCES;
+      }
+      //
+      // Let FfsHeader in FfsFileEntry point to the cached file buffer.
+      //
+      FvDevice->LastKey->FfsHeader = FfsHeader;
+      FvDevice->LastKey->FileCached = TRUE;
+    }
+  }
 
   //
   // Remember callers buffer size
@@ -427,13 +448,12 @@ FvReadFileSection (
   FvDevice = FV_DEVICE_FROM_THIS (This);
 
   //
-  // Read the whole file into buffer
+  // Read the file
   //
-  FileBuffer = NULL;
   Status = FvReadFile (
             This,
             NameGuid,
-            (VOID **)&FileBuffer,
+            NULL,
             &FileSize,
             &FileType,
             &FileAttributes,
@@ -447,8 +467,11 @@ FvReadFileSection (
   if (EFI_ERROR (Status)) {
     return Status;
   }
-  ASSERT (FileBuffer != NULL);
+  if (IS_FFS_FILE2 (FfsEntry->FfsHeader)) {
-
+    FileBuffer = ((UINT8 *) FfsEntry->FfsHeader) + sizeof (EFI_FFS_FILE_HEADER2);
+  } else {
+    FileBuffer = ((UINT8 *) FfsEntry->FfsHeader) + sizeof (EFI_FFS_FILE_HEADER);
+  }
   //
   // Check to see that the file actually HAS sections before we go any further.
   //
@@ -497,8 +520,6 @@ FvReadFileSection (
   //
 
 Done:
-  CoreFreePool (FileBuffer);
-
   return Status;
 }
 

MdeModulePkg/Core/Dxe/SectionExtraction/CoreSectionExtraction.c

@@ -440,7 +440,7 @@ OpenSectionStream (
   return OpenSectionStreamEx (
            SectionStreamLength,
            SectionStream,
-           TRUE,
+           FALSE,
            0,
            SectionStreamHandle
            );
@@ -1344,7 +1344,7 @@ FreeChildNode (
     // If it's an encapsulating section, we close the resulting section stream.
     // CloseSectionStream will free all memory associated with the stream.
     //
-    CloseSectionStream (ChildNode->EncapsulatedStreamHandle);
+    CloseSectionStream (ChildNode->EncapsulatedStreamHandle, TRUE);
   }
 
   if (ChildNode->Event != NULL) {
@@ -1362,6 +1362,8 @@ FreeChildNode (
   SEP member function.  Deletes an existing section stream
 
   @param  StreamHandleToClose    Indicates the stream to close
+  @param  FreeStreamBuffer       TRUE - Need to free stream buffer;
+                                 FALSE - No need to free stream buffer.
 
   @retval EFI_SUCCESS            The section stream is closed sucessfully.
   @retval EFI_OUT_OF_RESOURCES   Memory allocation failed.
@@ -1372,7 +1374,8 @@ FreeChildNode (
 EFI_STATUS
 EFIAPI
 CloseSectionStream (
-  IN  UINTN                                     StreamHandleToClose
+  IN  UINTN                                     StreamHandleToClose,
+  IN  BOOLEAN                                   FreeStreamBuffer
   )
 {
   CORE_SECTION_STREAM_NODE                      *StreamNode;
@@ -1397,7 +1400,9 @@ CloseSectionStream (
       ChildNode = CHILD_SECTION_NODE_FROM_LINK (Link);
       FreeChildNode (ChildNode);
     }
+    if (FreeStreamBuffer) {
       CoreFreePool (StreamNode->StreamBuffer);
+    }
     CoreFreePool (StreamNode);
     Status = EFI_SUCCESS;
   } else {