diff options
Diffstat (limited to 'MdeModulePkg/Library/DxeDpcLib')
| -rw-r--r-- | MdeModulePkg/Library/DxeDpcLib/DpcLib.c | 104 | ||||
| -rw-r--r-- | MdeModulePkg/Library/DxeDpcLib/DxeDpcLib.inf | 46 |
2 files changed, 150 insertions, 0 deletions
diff --git a/MdeModulePkg/Library/DxeDpcLib/DpcLib.c b/MdeModulePkg/Library/DxeDpcLib/DpcLib.c new file mode 100644 index 0000000000..bc834f7a3e --- /dev/null +++ b/MdeModulePkg/Library/DxeDpcLib/DpcLib.c @@ -0,0 +1,104 @@ +/** @file
+
+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:
+
+ DpcLib.c
+
+Abstract:
+
+**/
+
+#include <PiDxe.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Protocol/Dpc.h>
+
+//
+// Pointer to the DPC Protocol
+//
+EFI_DPC_PROTOCOL *mDpc;
+
+/**
+ This constructor function caches the EFI_DPC_PROTOCOL pointer.
+
+ @param[in] ImageHandle The firmware allocated handle for the EFI image.
+ @param[in] SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The constructor always return EFI_SUCCESS.
+
+**/
+EFI_STATUS
+EFIAPI
+DpcLibConstructor (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // Locate the EFI_DPC_PROTOCOL in the handle database
+ //
+ Status = gBS->LocateProtocol (&gEfiDpcProtocolGuid, NULL, (VOID **)&mDpc);
+ ASSERT_EFI_ERROR (Status);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Add a Deferred Procedure Call to the end of the DPC queue.
+
+ @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.
+
+**/
+EFI_STATUS
+QueueDpc (
+ IN EFI_TPL DpcTpl,
+ IN EFI_DPC_PROCEDURE DpcProcedure,
+ IN VOID *DpcContext
+ )
+{
+ //
+ // Call the EFI_DPC_PROTOCOL to queue the DPC
+ //
+ return mDpc->QueueDpc (mDpc, DpcTpl, DpcProcedure, DpcContext);
+}
+
+/**
+ 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.
+
+ @retval EFI_SUCCESS One or more DPCs were invoked.
+ @retval EFI_NOT_FOUND No DPCs were invoked.
+
+**/
+EFI_STATUS
+DispatchDpc (
+ VOID
+ )
+{
+ //
+ // Call the EFI_DPC_PROTOCOL to dispatch previously queued DPCs
+ //
+ return mDpc->DispatchDpc (mDpc);
+}
diff --git a/MdeModulePkg/Library/DxeDpcLib/DxeDpcLib.inf b/MdeModulePkg/Library/DxeDpcLib/DxeDpcLib.inf new file mode 100644 index 0000000000..9268837ffe --- /dev/null +++ b/MdeModulePkg/Library/DxeDpcLib/DxeDpcLib.inf @@ -0,0 +1,46 @@ +#/** @file
+# Component name for module DxeDpcLib
+#
+# 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.
+#
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = DxeDpcLib
+ FILE_GUID = 38897D86-FF36-4472-AE64-1DB9AE715C81
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = DpcLib|DXE_CORE DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SAL_DRIVER DXE_SMM_DRIVER UEFI_APPLICATION UEFI_DRIVER
+ EDK_RELEASE_VERSION = 0x00020000
+ EFI_SPECIFICATION_VERSION = 0x00020000
+ CONSTRUCTOR = DpcLibConstructor
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC
+#
+
+[Sources.common]
+ DpcLib.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+
+[LibraryClasses]
+ DebugLib
+ UefiBootServicesTableLib
+
+[Protocols]
+ gEfiDpcProtocolGuid # PROTOCOL ALWAYS_CONSUMED
|