mirror of https://github.com/acidanthera/audk.git
130 lines
3.5 KiB
C
130 lines
3.5 KiB
C
/** @file
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This code supports a the private implementation
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of the Data Hub protocol
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _DATA_HUB_H_
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#define _DATA_HUB_H_
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#include <FrameworkDxe.h>
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#include <Protocol/DataHub.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/UefiLib.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#define DATA_HUB_INSTANCE_SIGNATURE SIGNATURE_32 ('D', 'H', 'u', 'b')
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typedef struct {
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UINT32 Signature;
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EFI_HANDLE Handle;
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//
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// Produced protocol(s)
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//
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EFI_DATA_HUB_PROTOCOL DataHub;
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//
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// Private Data
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//
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//
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// Updates to GlobalMonotonicCount, LogListHead, and FilterDriverListHead
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// must be locked.
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//
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EFI_LOCK DataLock;
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//
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// Runing Monotonic Count to use for each error record.
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// Increment AFTER use in an error record.
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//
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UINT64 GlobalMonotonicCount;
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//
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// List of EFI_DATA_ENTRY structures. This is the data log! The list
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// must be in assending order of LogMonotonicCount.
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//
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LIST_ENTRY DataListHead;
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//
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// List of EFI_DATA_HUB_FILTER_DRIVER structures. Represents all
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// the registered filter drivers.
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//
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LIST_ENTRY FilterDriverListHead;
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} DATA_HUB_INSTANCE;
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#define DATA_HUB_INSTANCE_FROM_THIS(this) CR (this, DATA_HUB_INSTANCE, DataHub, DATA_HUB_INSTANCE_SIGNATURE)
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//
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// Private data structure to contain the data log. One record per
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// structure. Head pointer to the list is the Log member of
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// EFI_DATA_ENTRY. Record is a copy of the data passed in.
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//
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#define EFI_DATA_ENTRY_SIGNATURE SIGNATURE_32 ('D', 'r', 'e', 'c')
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typedef struct {
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UINT32 Signature;
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LIST_ENTRY Link;
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EFI_DATA_RECORD_HEADER *Record;
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UINTN RecordSize;
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} EFI_DATA_ENTRY;
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#define DATA_ENTRY_FROM_LINK(link) CR (link, EFI_DATA_ENTRY, Link, EFI_DATA_ENTRY_SIGNATURE)
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//
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// Private data to contain the filter driver Event and it's
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// associated EFI_TPL.
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//
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#define EFI_DATA_HUB_FILTER_DRIVER_SIGNATURE SIGNATURE_32 ('D', 'h', 'F', 'd')
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typedef struct {
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UINT32 Signature;
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LIST_ENTRY Link;
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//
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// Store Filter Driver Event and Tpl level it can be Signaled at.
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//
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EFI_EVENT Event;
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EFI_TPL Tpl;
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//
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// Monotonic count on the get next operation for Event.
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// Zero indicates get next has not been called for this event yet.
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//
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UINT64 GetNextMonotonicCount;
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//
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// Filter driver will register what class filter should be used.
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//
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UINT64 ClassFilter;
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//
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// Filter driver will register what record guid filter should be used.
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//
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EFI_GUID FilterDataRecordGuid;
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} DATA_HUB_FILTER_DRIVER;
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#define FILTER_ENTRY_FROM_LINK(link) CR (link, DATA_HUB_FILTER_DRIVER, Link, EFI_DATA_HUB_FILTER_DRIVER_SIGNATURE)
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#endif
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