Change Fat driver to support asynchronous File IO introduced in UEFI spec 2.3.1.D.

Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>

(based on FatPkg commit 063f6e8a9c263bafd52e1226399fc64d6d721dca)

[jordan.l.justen@intel.com: Use script to relicense to 2-clause BSD]
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Acked-by: Mark Doran <mark.doran@intel.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>

1 files changed, 28 insertions, 2 deletions

diff --git a/FatPkg/EnhancedFatDxe/Fat.c b/FatPkg/EnhancedFatDxe/Fat.c
index 38b70882c5..a52e6ea828 100644
--- a/FatPkg/EnhancedFatDxe/Fat.c
+++ b/FatPkg/EnhancedFatDxe/Fat.c
@@ -1,6 +1,6 @@
 /*++

 

-Copyright (c) 2005 - 2010, Intel Corporation. All rights reserved.<BR>

+Copyright (c) 2005 - 2013, 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

@@ -269,6 +269,7 @@ Returns:
   EFI_STATUS            Status;

   EFI_BLOCK_IO_PROTOCOL *BlockIo;

   EFI_DISK_IO_PROTOCOL  *DiskIo;

+  EFI_DISK_IO2_PROTOCOL *DiskIo2;

   BOOLEAN               LockedByMe;

 

   LockedByMe = FALSE;

@@ -311,11 +312,24 @@ Returns:
   if (EFI_ERROR (Status)) {

     goto Exit;

   }

+

+  Status = gBS->OpenProtocol (

+                  ControllerHandle,

+                  &gEfiDiskIo2ProtocolGuid,

+                  (VOID **) &DiskIo2,

+                  This->DriverBindingHandle,

+                  ControllerHandle,

+                  EFI_OPEN_PROTOCOL_BY_DRIVER

+                  );

+  if (EFI_ERROR (Status)) {

+    DiskIo2 = NULL;

+  }

+

   //

   // Allocate Volume structure. In FatAllocateVolume(), Resources

   // are allocated with protocol installed and cached initialized

   //

-  Status = FatAllocateVolume (ControllerHandle, DiskIo, BlockIo);

+  Status = FatAllocateVolume (ControllerHandle, DiskIo, DiskIo2, BlockIo);

 

   //

   // When the media changes on a device it will Reinstall the BlockIo interaface.

@@ -338,6 +352,12 @@ Returns:
              This->DriverBindingHandle,

              ControllerHandle

              );

+      gBS->CloseProtocol (

+             ControllerHandle,

+             &gEfiDiskIo2ProtocolGuid,

+             This->DriverBindingHandle,

+             ControllerHandle

+             );

     }

   }

 

@@ -406,6 +426,12 @@ Returns:
                   This->DriverBindingHandle,

                   ControllerHandle

                   );

+  Status = gBS->CloseProtocol (

+                  ControllerHandle,

+                  &gEfiDiskIo2ProtocolGuid,

+                  This->DriverBindingHandle,

+                  ControllerHandle

+                  );

 

   return Status;

 }