mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-27 12:15:19 +01:00
95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
|
/** @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);
|
||
|
|
}
|