mirror of
https://git.proxmox.com/git/mirror_edk2
synced 2025-10-30 23:50:23 +00:00
9df063a06a
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10403 6f19259b-4bc3-4df7-8a09-765794883524
63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
/** @file
|
|
This file declares Stall PPI.
|
|
|
|
This ppi abstracts the blocking stall service to other agents.
|
|
|
|
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
|
|
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.
|
|
|
|
@par Revision Reference:
|
|
This PPI is introduced in PI Version 1.0.
|
|
|
|
**/
|
|
|
|
#ifndef __STALL_PPI_H__
|
|
#define __STALL_PPI_H__
|
|
|
|
#define EFI_PEI_STALL_PPI_GUID \
|
|
{ 0x1f4c6f90, 0xb06b, 0x48d8, {0xa2, 0x01, 0xba, 0xe5, 0xf1, 0xcd, 0x7d, 0x56 } }
|
|
|
|
typedef struct _EFI_PEI_STALL_PPI EFI_PEI_STALL_PPI;
|
|
|
|
/**
|
|
The Stall() function provides a blocking stall for at least the number
|
|
of microseconds stipulated in the final argument of the API.
|
|
|
|
@param PeiServices An indirect pointer to the PEI Services Table
|
|
published by the PEI Foundation.
|
|
@param This Pointer to the local data for the interface.
|
|
@param Microseconds Number of microseconds for which to stall.
|
|
|
|
@retval EFI_SUCCESS The service provided at least the required delay.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_PEI_STALL)(
|
|
IN CONST EFI_PEI_SERVICES **PeiServices,
|
|
IN CONST EFI_PEI_STALL_PPI *This,
|
|
IN UINTN Microseconds
|
|
);
|
|
|
|
///
|
|
/// This service provides a simple, blocking stall with platform-specific resolution.
|
|
///
|
|
struct _EFI_PEI_STALL_PPI {
|
|
///
|
|
/// The resolution in microseconds of the stall services.
|
|
///
|
|
UINTN Resolution;
|
|
|
|
EFI_PEI_STALL Stall;
|
|
};
|
|
|
|
extern EFI_GUID gEfiPeiStallPpiGuid;
|
|
|
|
#endif
|