NetworkPkg: Move Network library and drivers from MdeModulePkg to NetworkPkg

[mirror_edk2.git] / NetworkPkg / Library / DxeDpcLib / DpcLib.c

diff --git a/NetworkPkg/Library/DxeDpcLib/DpcLib.c b/NetworkPkg/Library/DxeDpcLib/DpcLib.c
new file mode 100644 (file)
index 0000000..29d8107
--- /dev/null
+++ b/NetworkPkg/Library/DxeDpcLib/DpcLib.c
@@ -0,0 +1,94 @@
+/** @file\r
+  Help functions to access UDP service.\r
+\r
+Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
+**/\r
+\r
+#include <Uefi.h>\r
+#include <Library/DebugLib.h>\r
+#include <Library/UefiBootServicesTableLib.h>\r
+#include <Protocol/Dpc.h>\r
+\r
+//\r
+// Pointer to the DPC Protocol\r
+//\r
+EFI_DPC_PROTOCOL  *mDpc;\r
+\r
+/**\r
+  This constructor function caches the EFI_DPC_PROTOCOL pointer.\r
+\r
+  @param[in] ImageHandle The firmware allocated handle for the EFI image.\r
+  @param[in] SystemTable A pointer to the EFI System Table.\r
+\r
+  @retval EFI_SUCCESS The constructor always return EFI_SUCCESS.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+DpcLibConstructor (\r
+  IN EFI_HANDLE        ImageHandle,\r
+  IN EFI_SYSTEM_TABLE  *SystemTable\r
+  )\r
+{\r
+  EFI_STATUS  Status;\r
+\r
+  //\r
+  // Locate the EFI_DPC_PROTOCOL in the handle database\r
+  //\r
+  Status = gBS->LocateProtocol (&gEfiDpcProtocolGuid, NULL, (VOID **)&mDpc);\r
+  ASSERT_EFI_ERROR (Status);\r
+\r
+  return Status;\r
+}\r
+\r
+/**\r
+  Add a Deferred Procedure Call to the end of the DPC queue.\r
+\r
+  @param[in]  DpcTpl        The EFI_TPL that the DPC should be invoked.\r
+  @param[in]  DpcProcedure  Pointer to the DPC's function.\r
+  @param[in]  DpcContext    Pointer to the DPC's context.  Passed to DpcProcedure\r
+                            when DpcProcedure is invoked.\r
+\r
+  @retval EFI_SUCCESS            The DPC was queued.\r
+  @retval EFI_INVALID_PARAMETER  DpcTpl is not a valid EFI_TPL.\r
+  @retval EFI_INVALID_PARAMETER  DpcProcedure is NULL.\r
+  @retval EFI_OUT_OF_RESOURCES   There are not enough resources available to\r
+                                 add the DPC to the queue.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+QueueDpc (\r
+  IN EFI_TPL            DpcTpl,\r
+  IN EFI_DPC_PROCEDURE  DpcProcedure,\r
+  IN VOID               *DpcContext    OPTIONAL\r
+  )\r
+{\r
+  //\r
+  // Call the EFI_DPC_PROTOCOL to queue the DPC\r
+  //\r
+  return mDpc->QueueDpc (mDpc, DpcTpl, DpcProcedure, DpcContext);\r
+}\r
+\r
+/**\r
+  Dispatch the queue of DPCs.  ALL DPCs that have been queued with a DpcTpl\r
+  value greater than or equal to the current TPL are invoked in the order that\r
+  they were queued.  DPCs with higher DpcTpl values are invoked before DPCs with\r
+  lower DpcTpl values.\r
+\r
+  @retval EFI_SUCCESS    One or more DPCs were invoked.\r
+  @retval EFI_NOT_FOUND  No DPCs were invoked.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+DispatchDpc (\r
+  VOID\r
+  )\r
+{\r
+  //\r
+  // Call the EFI_DPC_PROTOCOL to dispatch previously queued DPCs\r
+  //\r
+  return mDpc->DispatchDpc (mDpc);\r
+}\r