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| author | Kun Qin <kuqin@microsoft.com> | 2024-09-19 14:11:37 -0700 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2024-10-17 08:51:15 +0000 |
| commit | d64d1e195ceb003c824786bfd817227c7ae81f06 (patch) | |
| tree | 7be6ef83aabe2d31e5926c5b598b824ed9bda923 /MdeModulePkg/Include | |
| parent | b3f36e151d8b014cac5c6a833e2270c14d998739 (diff) | |
| download | edk2-d64d1e195ceb003c824786bfd817227c7ae81f06.tar.gz | |
MdeModulePkg: PeiMain: Introduce implementation of delayed dispatch
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4496
This change adds the implementation that fits the needs and description
of PI spec defined Delayed Dispatch PPI in Pei Core.
The PPI would allow minimal delay for registered callbacks. As well as
allowing other functions to wait for GUIDed delayed dispatch callbacks.
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Debkumar De <debkumar.de@intel.com>
Cc: Catharine West <catharine.west@intel.com>
Co-authored-by: Mike Turner <mikeyt@pobox.com>
Co-authored-by: Sachin Ganesh <sachinganesh@ami.com>
Signed-off-by: Kun Qin <kuqin12@gmail.com>
Diffstat (limited to 'MdeModulePkg/Include')
| -rw-r--r-- | MdeModulePkg/Include/Guid/DelayedDispatch.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/MdeModulePkg/Include/Guid/DelayedDispatch.h b/MdeModulePkg/Include/Guid/DelayedDispatch.h new file mode 100644 index 0000000000..9be5444e36 --- /dev/null +++ b/MdeModulePkg/Include/Guid/DelayedDispatch.h @@ -0,0 +1,47 @@ +/** @file
+ Definition for structure & defines exported by Delayed Dispatch PPI
+
+ Copyright (c), Microsoft Corporation.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef DELAYED_DISPATCH_H_
+#define DELAYED_DISPATCH_H_
+
+// Delayed Dispatch table GUID
+#define EFI_DELAYED_DISPATCH_TABLE_GUID {\
+ 0x4b733449, 0x8eff, 0x488c, { 0x92, 0x1a, 0x15, 0x4a, 0xda, 0x25, 0x18, 0x07 } \
+ }
+
+//
+// Maximal number of Delayed Dispatch entries supported
+//
+#define DELAYED_DISPATCH_MAX_ENTRIES 8
+
+//
+// Internal structure for delayed dispatch entries.
+// Packing the structures here to save space as they will be stored as HOBs.
+//
+#pragma pack (push, 1)
+
+typedef struct {
+ EFI_GUID DelayedGroupId;
+ UINT64 Context;
+ EFI_DELAYED_DISPATCH_FUNCTION Function;
+ UINT64 DispatchTime;
+ UINT32 MicrosecondDelay;
+} DELAYED_DISPATCH_ENTRY;
+
+typedef struct {
+ UINT32 Count;
+ UINT32 DispCount;
+ DELAYED_DISPATCH_ENTRY Entry[DELAYED_DISPATCH_MAX_ENTRIES];
+} DELAYED_DISPATCH_TABLE;
+
+#pragma pack (pop)
+
+extern EFI_GUID gEfiDelayedDispatchTableGuid;
+
+#endif
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