X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=NetworkPkg%2FLibrary%2FDxeDpcLib%2FDpcLib.c;fp=NetworkPkg%2FLibrary%2FDxeDpcLib%2FDpcLib.c;h=29d810776eb5cfba71056335ebdf2567cfe1c53c;hb=4542f8b8135f1f1ee5654e25139be9769e139ddd;hp=0000000000000000000000000000000000000000;hpb=c0fd7f734e2d33e22215899b40a47b843129541d;p=mirror_edk2.git

diff --git a/NetworkPkg/Library/DxeDpcLib/DpcLib.c b/NetworkPkg/Library/DxeDpcLib/DpcLib.c
new file mode 100644
index 0000000000..29d810776e
--- /dev/null
+++ b/NetworkPkg/Library/DxeDpcLib/DpcLib.c
@@ -0,0 +1,94 @@
+/** @file
+  Help functions to access UDP service.
+
+Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Uefi.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 Status;
+}
+
+/**
+  Add a Deferred Procedure Call to the end of the DPC queue.
+
+  @param[in]  DpcTpl        The EFI_TPL that the DPC should be invoked.
+  @param[in]  DpcProcedure  Pointer to the DPC's function.
+  @param[in]  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
+EFIAPI
+QueueDpc (
+  IN EFI_TPL            DpcTpl,
+  IN EFI_DPC_PROCEDURE  DpcProcedure,
+  IN VOID               *DpcContext    OPTIONAL
+  )
+{
+  //
+  // 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
+EFIAPI
+DispatchDpc (
+  VOID
+  )
+{
+  //
+  // Call the EFI_DPC_PROTOCOL to dispatch previously queued DPCs
+  //
+  return mDpc->DispatchDpc (mDpc);
+}