1 files changed, 109 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Protocol/Dpc/Dpc.h b/EdkCompatibilityPkg/Foundation/Protocol/Dpc/Dpc.h
new file mode 100644
index 0000000000..e49ece806b
--- /dev/null
+++ b/EdkCompatibilityPkg/Foundation/Protocol/Dpc/Dpc.h
@@ -0,0 +1,109 @@
+/*++
+
+Copyright (c) 2007, Intel Corporation
+All rights reserved. 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
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+Module Name:
+
+  Dpc.h
+
+Abstract:
+
+  EFI Deferred Procedure Call Protocol
+
+Revision History
+
+--*/
+
+
+#ifndef _EFIDPC_H
+#define _EFIDPC_H
+
+//
+// DPC Protocol GUID value
+//
+#define EFI_DPC_PROTOCOL_GUID \
+    { 0x480f8ae9, 0xc46, 0x4aa9, 0xbc, 0x89, 0xdb, 0x9f, 0xba, 0x61, 0x98, 0x6 } 
+
+//
+// Forward reference for pure ANSI compatability
+//
+typedef struct _EFI_DPC_PROTOCOL  EFI_DPC_PROTOCOL;
+
+
+/**
+  Invoke a Deferred Procedure Call.
+
+  @param  DpcContext           Pointer to the Deferred Procedure Call's context, 
+                               which is implementation dependent.
+
+**/
+typedef
+VOID
+(EFIAPI *EFI_DPC_PROCEDURE) (
+  IN VOID  *DpcContext
+  );
+
+/**
+  Add a Deferred Procedure Call to the end of the DPC queue.
+
+  @param  This          Protocol instance pointer.
+  @param  DpcTpl        The EFI_TPL that the DPC should be invoked.
+  @param  DpcProcedure  Pointer to the DPC's function.
+  @param  DpcContext    Pointer to the DPC's context.  Passed to DpcProcedure
+                        when DpcProcedure is invoked.
+  
+  @retval EFI_SUCCESS            The DPC was queued.
+  @retval EFI_INVALID_PARAMETER  DpcTpl is not a valid EFI_TPL.
+  @retval EFI_INVALID_PARAMETER  DpcProcedure is NULL.
+  @retval EFI_OUT_OF_RESOURCES   There are not enough resources available to 
+                                 add the DPC to the queue.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_DPC_QUEUE_DPC) (
+  IN EFI_DPC_PROTOCOL   *This,
+  IN EFI_TPL            DpcTpl,
+  IN EFI_DPC_PROCEDURE  DpcProcedure,
+  IN VOID               *DpcContext    OPTIONAL
+  );
+
+/**
+  Dispatch the queue of DPCs.  ALL DPCs that have been queued with a DpcTpl
+  value greater than or equal to the current TPL are invoked in the order that
+  they were queued.  DPCs with higher DpcTpl values are invoked before DPCs with
+  lower DpcTpl values.
+
+  @param  This  Protocol instance pointer.
+  
+  @retval EFI_SUCCESS    One or more DPCs were invoked.
+  @retval EFI_NOT_FOUND  No DPCs were invoked.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_DPC_DISPATCH_DPC) (
+  IN EFI_DPC_PROTOCOL  *This
+  );
+
+//
+// DPC Protocol structure
+//
+typedef struct _EFI_DPC_PROTOCOL {
+  EFI_DPC_QUEUE_DPC     QueueDpc;
+  EFI_DPC_DISPATCH_DPC  DispatchDpc;
+};
+
+//
+// DPC Protocol GUID variable
+//
+extern EFI_GUID gEfiDpcProtocolGuid;
+
+#endif /* _EFIDPC_H */