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| author | bbahnsen <bbahnsen@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-04-21 22:54:32 +0000 |
|---|---|---|
| committer | bbahnsen <bbahnsen@6f19259b-4bc3-4df7-8a09-765794883524> | 2006-04-21 22:54:32 +0000 |
| commit | 878ddf1fc3540a715f63594ed22b6929e881afb4 (patch) | |
| tree | c56c44dac138137b510e1fba7c3efe5e4d84bea2 /MdePkg/Include/Ppi/Stall.h | |
| download | edk2-878ddf1fc3540a715f63594ed22b6929e881afb4.tar.gz edk2-878ddf1fc3540a715f63594ed22b6929e881afb4.tar.bz2 edk2-878ddf1fc3540a715f63594ed22b6929e881afb4.zip | |
Initial import.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Include/Ppi/Stall.h')
| -rw-r--r-- | MdePkg/Include/Ppi/Stall.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/MdePkg/Include/Ppi/Stall.h b/MdePkg/Include/Ppi/Stall.h new file mode 100644 index 0000000000..363baa6d39 --- /dev/null +++ b/MdePkg/Include/Ppi/Stall.h @@ -0,0 +1,73 @@ +/** @file
+ This file declares Stall PPI.
+
+ This code abstracts the PEI core to provide Stall services.
+
+ Copyright (c) 2006, Intel Corporation
+ All rights reserved. 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.
+
+ Module Name: Stall.h
+
+ @par Revision Reference:
+ This PPI is defined in PEI CIS.
+ Version 0.91.
+
+**/
+
+#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 EFI_PEI_SERVICES **PeiServices,
+ IN EFI_PEI_STALL_PPI *This,
+ IN UINTN Microseconds
+ );
+
+/**
+ @par Ppi Description:
+ This service provides a simple, blocking stall with platform-specific resolution.
+
+ @param Resolution
+ The resolution in microseconds of the stall services.
+
+ @param Stall
+ The actual stall procedure call.
+
+**/
+struct _EFI_PEI_STALL_PPI {
+ UINTN Resolution;
+ EFI_PEI_STALL Stall;
+};
+
+extern EFI_GUID gEfiPeiStallPpiGuid;
+
+#endif
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