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81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/** @file
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Copyright (c) 2007, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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Module Name:
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Dpc.h
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Abstract:
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**/
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#ifndef _DPC_H_
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#define _DPC_H_
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#include <Uefi.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Protocol/Dpc.h>
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//
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// Internal data struture for managing DPCs. A DPC entry is either on the free
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// list or on a DPC queue at a specific EFI_TPL.
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//
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typedef struct {
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LIST_ENTRY ListEntry;
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EFI_DPC_PROCEDURE DpcProcedure;
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VOID *DpcContext;
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} DPC_ENTRY;
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/**
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Add a Deferred Procedure Call to the end of the DPC queue.
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@param This Protocol instance pointer.
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@param DpcTpl The EFI_TPL that the DPC should be invoked.
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@param DpcProcedure Pointer to the DPC's function.
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@param DpcContext Pointer to the DPC's context. Passed to DpcProcedure
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when DpcProcedure is invoked.
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@retval EFI_SUCCESS The DPC was queued.
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@retval EFI_INVALID_PARAMETER DpcTpl is not a valid EFI_TPL.
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@retval EFI_INVALID_PARAMETER DpcProcedure is NULL.
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@retval EFI_OUT_OF_RESOURCES There are not enough resources available to
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add the DPC to the queue.
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**/
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EFI_STATUS
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EFIAPI
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DpcQueueDpc (
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IN EFI_DPC_PROTOCOL *This,
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IN EFI_TPL DpcTpl,
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IN EFI_DPC_PROCEDURE DpcProcedure,
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IN VOID *DpcContext OPTIONAL
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);
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/**
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Dispatch the queue of DPCs. ALL DPCs that have been queued with a DpcTpl
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value greater than or equal to the current TPL are invoked in the order that
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they were queued. DPCs with higher DpcTpl values are invoked before DPCs with
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lower DpcTpl values.
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@param This Protocol instance pointer.
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@retval EFI_SUCCESS One or more DPCs were invoked.
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@retval EFI_NOT_FOUND No DPCs were invoked.
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**/
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EFI_STATUS
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EFIAPI
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DpcDispatchDpc (
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IN EFI_DPC_PROTOCOL *This
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);
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#endif
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