Adjust directory structures.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3322 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8
660
IntelFrameworkModulePkg/Universal/DataHubDxe/DataHub.c
Normal file
660
IntelFrameworkModulePkg/Universal/DataHubDxe/DataHub.c
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@ -0,0 +1,660 @@
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/*++
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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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
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http://opensource.org/licenses/bsd-license.php
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||||
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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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Module Name:
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DataHub.c
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Abstract:
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This code produces the Data Hub protocol. It preloads the data hub
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with status information copied in from PEI HOBs.
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Only code that implements the Data Hub protocol should go in this file!
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The Term MTC stands for MonoTonicCounter.
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For more information please look at DataHub.doc
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NOTE: For extra security of the log GetNextDataRecord () could return a copy
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of the data record.
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--*/
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#include "DataHub.h"
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CONST EFI_GUID gZeroGuid = { 0, 0, 0, { 0, 0, 0, 0, 0, 0, 0, 0 } };
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||||
//
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||||
// Worker functions private to this file
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||||
//
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||||
STATIC
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||||
DATA_HUB_FILTER_DRIVER *
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||||
FindFilterDriverByEvent (
|
||||
IN LIST_ENTRY *Head,
|
||||
IN EFI_EVENT Event
|
||||
);
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||||
|
||||
STATIC
|
||||
EFI_DATA_RECORD_HEADER *
|
||||
GetNextDataRecord (
|
||||
IN LIST_ENTRY *Head,
|
||||
IN UINT64 ClassFilter,
|
||||
IN OUT UINT64 *PtrCurrentMTC
|
||||
);
|
||||
|
||||
STATIC
|
||||
EFI_STATUS
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||||
EFIAPI
|
||||
DataHubLogData (
|
||||
IN EFI_DATA_HUB_PROTOCOL *This,
|
||||
IN EFI_GUID *DataRecordGuid,
|
||||
IN EFI_GUID *ProducerName,
|
||||
IN UINT64 DataRecordClass,
|
||||
IN VOID *RawData,
|
||||
IN UINT32 RawDataSize
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||||
)
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||||
/*++
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||||
|
||||
Routine Description:
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|
||||
Log data record into the data logging hub
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||||
|
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Arguments:
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||||
This - Protocol instance structure
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||||
|
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DataRecordGuid - GUID that defines record contents
|
||||
|
||||
ProducerName - GUID that defines the name of the producer of the data
|
||||
|
||||
DataRecordClass - Class that defines generic record type
|
||||
|
||||
RawData - Data Log record as defined by DataRecordGuid
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||||
|
||||
RawDataSize - Size of Data Log data in bytes
|
||||
|
||||
Returns:
|
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|
||||
EFI_SUCCESS - If data was logged
|
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|
||||
EFI_OUT_OF_RESOURCES - If data was not logged due to lack of system
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||||
resources.
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--*/
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{
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EFI_STATUS Status;
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DATA_HUB_INSTANCE *Private;
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EFI_DATA_ENTRY *LogEntry;
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UINT32 TotalSize;
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UINT32 RecordSize;
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EFI_DATA_RECORD_HEADER *Record;
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VOID *Raw;
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DATA_HUB_FILTER_DRIVER *FilterEntry;
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LIST_ENTRY *Link;
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LIST_ENTRY *Head;
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Private = DATA_HUB_INSTANCE_FROM_THIS (This);
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//
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// Combine the storage for the internal structs and a copy of the log record.
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// Record follows PrivateLogEntry. The consumer will be returned a pointer
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// to Record so we don't what it to be the thing that was allocated from
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// pool, so the consumer can't free an data record by mistake.
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//
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RecordSize = sizeof (EFI_DATA_RECORD_HEADER) + RawDataSize;
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TotalSize = sizeof (EFI_DATA_ENTRY) + RecordSize;
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//
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// The Logging action is the critical section, so it is locked.
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// The MTC asignment & update, time, and logging must be an
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||||
// atomic operation, so use the lock.
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//
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Status = EfiAcquireLockOrFail (&Private->DataLock);
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if (EFI_ERROR (Status)) {
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//
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||||
// Reentrancy detected so exit!
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//
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return Status;
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}
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LogEntry = AllocatePool (TotalSize);
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if (LogEntry == NULL) {
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EfiReleaseLock (&Private->DataLock);
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return EFI_OUT_OF_RESOURCES;
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}
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ZeroMem (LogEntry, TotalSize);
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Record = (EFI_DATA_RECORD_HEADER *) (LogEntry + 1);
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Raw = (VOID *) (Record + 1);
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//
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// Build Standard Log Header
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//
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Record->Version = EFI_DATA_RECORD_HEADER_VERSION;
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Record->HeaderSize = sizeof (EFI_DATA_RECORD_HEADER);
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Record->RecordSize = RecordSize;
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CopyMem (&Record->DataRecordGuid, DataRecordGuid, sizeof (EFI_GUID));
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CopyMem (&Record->ProducerName, ProducerName, sizeof (EFI_GUID));
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Record->DataRecordClass = DataRecordClass;
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Record->LogMonotonicCount = Private->GlobalMonotonicCount++;
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gRT->GetTime (&Record->LogTime, NULL);
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//
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// Insert log into the internal linked list.
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//
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LogEntry->Signature = EFI_DATA_ENTRY_SIGNATURE;
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LogEntry->Record = Record;
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LogEntry->RecordSize = sizeof (EFI_DATA_ENTRY) + RawDataSize;
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InsertTailList (&Private->DataListHead, &LogEntry->Link);
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CopyMem (Raw, RawData, RawDataSize);
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EfiReleaseLock (&Private->DataLock);
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//
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// Send Signal to all the filter drivers which are interested
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// in the record's class and guid.
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//
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Head = &Private->FilterDriverListHead;
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for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
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FilterEntry = FILTER_ENTRY_FROM_LINK (Link);
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if (((FilterEntry->ClassFilter & DataRecordClass) != 0) &&
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(CompareGuid (&FilterEntry->FilterDataRecordGuid, &gZeroGuid) ||
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CompareGuid (&FilterEntry->FilterDataRecordGuid, DataRecordGuid))) {
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||||
gBS->SignalEvent (FilterEntry->Event);
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}
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||||
}
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||||
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||||
return EFI_SUCCESS;
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}
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||||
STATIC
|
||||
EFI_STATUS
|
||||
EFIAPI
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||||
DataHubGetNextRecord (
|
||||
IN EFI_DATA_HUB_PROTOCOL *This,
|
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IN OUT UINT64 *MonotonicCount,
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||||
IN EFI_EVENT *FilterDriverEvent, OPTIONAL
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||||
OUT EFI_DATA_RECORD_HEADER **Record
|
||||
)
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||||
/*++
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||||
|
||||
Routine Description:
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||||
|
||||
Get a previously logged data record and the MonotonicCount for the next
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||||
availible Record. This allows all records or all records later
|
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than a give MonotonicCount to be returned. If an optional FilterDriverEvent
|
||||
is passed in with a MonotonicCout of zero return the first record
|
||||
not yet read by the filter driver. If FilterDriverEvent is NULL and
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||||
MonotonicCount is zero return the first data record.
|
||||
|
||||
Arguments:
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||||
|
||||
This - The EFI_DATA_HUB_PROTOCOL instance.
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MonotonicCount - Specifies the Record to return. On input, zero means
|
||||
return the first record. On output, contains the next
|
||||
record to availible. Zero indicates no more records.
|
||||
FilterDriverEvent - If FilterDriverEvent is not passed in a MonotonicCount
|
||||
of zero, it means to return the first data record.
|
||||
If FilterDriverEvent is passed in, then a MonotonicCount
|
||||
of zero means to return the first data not yet read by
|
||||
FilterDriverEvent.
|
||||
Record - Returns a dynamically allocated memory buffer with a data
|
||||
record that matches MonotonicCount.
|
||||
|
||||
Returns:
|
||||
|
||||
EFI_SUCCESS - Data was returned in Record.
|
||||
EFI_INVALID_PARAMETER - FilterDriverEvent was passed in but does not exist.
|
||||
EFI_NOT_FOUND - MonotonicCount does not match any data record in the
|
||||
system. If a MonotonicCount of zero was passed in, then
|
||||
no data records exist in the system.
|
||||
EFI_OUT_OF_RESOURCES - Record was not returned due to lack of system resources.
|
||||
|
||||
--*/
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||||
{
|
||||
DATA_HUB_INSTANCE *Private;
|
||||
DATA_HUB_FILTER_DRIVER *FilterDriver;
|
||||
UINT64 ClassFilter;
|
||||
UINT64 FilterMonotonicCount;
|
||||
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||||
Private = DATA_HUB_INSTANCE_FROM_THIS (This);
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||||
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||||
FilterDriver = NULL;
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||||
FilterMonotonicCount = 0;
|
||||
ClassFilter = EFI_DATA_RECORD_CLASS_DEBUG |
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||||
EFI_DATA_RECORD_CLASS_ERROR |
|
||||
EFI_DATA_RECORD_CLASS_DATA |
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||||
EFI_DATA_RECORD_CLASS_PROGRESS_CODE;
|
||||
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||||
if (FilterDriverEvent != NULL) {
|
||||
//
|
||||
// For events the beginning is the last unread record. This info is
|
||||
// stored in the instance structure, so we must look up the event
|
||||
// to get the data.
|
||||
//
|
||||
FilterDriver = FindFilterDriverByEvent (
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||||
&Private->FilterDriverListHead,
|
||||
*FilterDriverEvent
|
||||
);
|
||||
if (FilterDriver == NULL) {
|
||||
return EFI_INVALID_PARAMETER;
|
||||
}
|
||||
//
|
||||
// Use the Class filter the event was created with.
|
||||
//
|
||||
ClassFilter = FilterDriver->ClassFilter;
|
||||
|
||||
if (*MonotonicCount == 0) {
|
||||
//
|
||||
// Use the MTC from the Filter Driver.
|
||||
//
|
||||
FilterMonotonicCount = FilterDriver->GetNextMonotonicCount;
|
||||
if (FilterMonotonicCount != 0) {
|
||||
//
|
||||
// The GetNextMonotonicCount field remembers the last value from the previous time.
|
||||
// But we already processed this vaule, so we need to find the next one. So if
|
||||
// It is not the first time get the new record entry.
|
||||
//
|
||||
*Record = GetNextDataRecord (&Private->DataListHead, ClassFilter, &FilterMonotonicCount);
|
||||
*MonotonicCount = FilterMonotonicCount;
|
||||
if (FilterMonotonicCount == 0) {
|
||||
//
|
||||
// If there is no new record to get exit now.
|
||||
//
|
||||
return EFI_NOT_FOUND;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
//
|
||||
// Return the record
|
||||
//
|
||||
*Record = GetNextDataRecord (&Private->DataListHead, ClassFilter, MonotonicCount);
|
||||
if (*Record == NULL) {
|
||||
return EFI_NOT_FOUND;
|
||||
}
|
||||
|
||||
if (FilterDriver != NULL) {
|
||||
//
|
||||
// If we have a filter driver update the records that have been read.
|
||||
// If MonotonicCount is zero No more reacords left.
|
||||
//
|
||||
if (*MonotonicCount == 0) {
|
||||
if (FilterMonotonicCount != 0) {
|
||||
//
|
||||
// Return the result of our extra GetNextDataRecord.
|
||||
//
|
||||
FilterDriver->GetNextMonotonicCount = FilterMonotonicCount;
|
||||
}
|
||||
} else {
|
||||
//
|
||||
// Point to next undread record
|
||||
//
|
||||
FilterDriver->GetNextMonotonicCount = *MonotonicCount;
|
||||
}
|
||||
}
|
||||
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
|
||||
STATIC
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
DataHubRegisterFilterDriver (
|
||||
IN EFI_DATA_HUB_PROTOCOL * This,
|
||||
IN EFI_EVENT FilterEvent,
|
||||
IN EFI_TPL FilterTpl,
|
||||
IN UINT64 FilterClass,
|
||||
IN EFI_GUID * FilterDataRecordGuid OPTIONAL
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
|
||||
This function registers the data hub filter driver that is represented
|
||||
by FilterEvent. Only one instance of each FilterEvent can be registered.
|
||||
After the FilterEvent is registered, it will be signaled so it can sync
|
||||
with data records that have been recorded prior to the FilterEvent being
|
||||
registered.
|
||||
|
||||
Arguments:
|
||||
|
||||
This - The EFI_DATA_HUB_PROTOCOL instance.
|
||||
FilterEvent - The EFI_EVENT to signal whenever data that matches
|
||||
FilterClass is logged in the system.
|
||||
FilterTpl - The maximum EFI_TPL at which FilterEvent can be
|
||||
signaled. It is strongly recommended that you use the
|
||||
lowest EFI_TPL possible.
|
||||
FilterClass - FilterEvent will be signaled whenever a bit in
|
||||
EFI_DATA_RECORD_HEADER.DataRecordClass is also set in
|
||||
FilterClass. If FilterClass is zero, no class-based
|
||||
filtering will be performed.
|
||||
FilterDataRecordGuid - FilterEvent will be signaled whenever FilterDataRecordGuid
|
||||
matches EFI_DATA_RECORD_HEADER.DataRecordGuid. If
|
||||
FilterDataRecordGuid is NULL, then no GUID-based filtering
|
||||
will be performed.
|
||||
Returns:
|
||||
|
||||
EFI_SUCCESS - The filter driver event was registered.
|
||||
EFI_ALREADY_STARTED - FilterEvent was previously registered and cannot be
|
||||
registered again.
|
||||
EFI_OUT_OF_RESOURCES - The filter driver event was not registered due to lack of
|
||||
system resources.
|
||||
|
||||
--*/
|
||||
{
|
||||
DATA_HUB_INSTANCE *Private;
|
||||
DATA_HUB_FILTER_DRIVER *FilterDriver;
|
||||
|
||||
Private = DATA_HUB_INSTANCE_FROM_THIS (This);
|
||||
|
||||
FilterDriver = (DATA_HUB_FILTER_DRIVER *) AllocateZeroPool (sizeof (DATA_HUB_FILTER_DRIVER));
|
||||
if (FilterDriver == NULL) {
|
||||
return EFI_OUT_OF_RESOURCES;
|
||||
}
|
||||
//
|
||||
// Initialize filter driver info
|
||||
//
|
||||
FilterDriver->Signature = EFI_DATA_HUB_FILTER_DRIVER_SIGNATURE;
|
||||
FilterDriver->Event = FilterEvent;
|
||||
FilterDriver->Tpl = FilterTpl;
|
||||
FilterDriver->GetNextMonotonicCount = 0;
|
||||
if (FilterClass == 0) {
|
||||
FilterDriver->ClassFilter = EFI_DATA_RECORD_CLASS_DEBUG |
|
||||
EFI_DATA_RECORD_CLASS_ERROR |
|
||||
EFI_DATA_RECORD_CLASS_DATA |
|
||||
EFI_DATA_RECORD_CLASS_PROGRESS_CODE;
|
||||
} else {
|
||||
FilterDriver->ClassFilter = FilterClass;
|
||||
}
|
||||
|
||||
if (FilterDataRecordGuid != NULL) {
|
||||
CopyMem (&FilterDriver->FilterDataRecordGuid, FilterDataRecordGuid, sizeof (EFI_GUID));
|
||||
}
|
||||
//
|
||||
// Search for duplicate entries
|
||||
//
|
||||
if (FindFilterDriverByEvent (&Private->FilterDriverListHead, FilterEvent) != NULL) {
|
||||
FreePool (FilterDriver);
|
||||
return EFI_ALREADY_STARTED;
|
||||
}
|
||||
//
|
||||
// Make insertion an atomic operation with the lock.
|
||||
//
|
||||
EfiAcquireLock (&Private->DataLock);
|
||||
InsertTailList (&Private->FilterDriverListHead, &FilterDriver->Link);
|
||||
EfiReleaseLock (&Private->DataLock);
|
||||
|
||||
//
|
||||
// Signal the Filter driver we just loaded so they will recieve all the
|
||||
// previous history. If we did not signal here we would have to wait until
|
||||
// the next data was logged to get the history. In a case where no next
|
||||
// data was logged we would never get synced up.
|
||||
//
|
||||
gBS->SignalEvent (FilterEvent);
|
||||
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
|
||||
STATIC
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
DataHubUnregisterFilterDriver (
|
||||
IN EFI_DATA_HUB_PROTOCOL *This,
|
||||
IN EFI_EVENT FilterEvent
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
|
||||
Remove a Filter Driver, so it no longer gets called when data
|
||||
information is logged.
|
||||
|
||||
Arguments:
|
||||
|
||||
This - Protocol instance structure
|
||||
|
||||
FilterEvent - Event that represents a filter driver that is to be
|
||||
Unregistered.
|
||||
|
||||
Returns:
|
||||
|
||||
EFI_SUCCESS - If FilterEvent was unregistered
|
||||
|
||||
EFI_NOT_FOUND - If FilterEvent does not exist
|
||||
|
||||
--*/
|
||||
{
|
||||
DATA_HUB_INSTANCE *Private;
|
||||
DATA_HUB_FILTER_DRIVER *FilterDriver;
|
||||
|
||||
Private = DATA_HUB_INSTANCE_FROM_THIS (This);
|
||||
|
||||
//
|
||||
// Search for duplicate entries
|
||||
//
|
||||
FilterDriver = FindFilterDriverByEvent (
|
||||
&Private->FilterDriverListHead,
|
||||
FilterEvent
|
||||
);
|
||||
if (FilterDriver == NULL) {
|
||||
return EFI_NOT_FOUND;
|
||||
}
|
||||
//
|
||||
// Make removal an atomic operation with the lock
|
||||
//
|
||||
EfiAcquireLock (&Private->DataLock);
|
||||
RemoveEntryList (&FilterDriver->Link);
|
||||
EfiReleaseLock (&Private->DataLock);
|
||||
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
//
|
||||
// STATIC Worker fucntions follow
|
||||
//
|
||||
STATIC
|
||||
DATA_HUB_FILTER_DRIVER *
|
||||
FindFilterDriverByEvent (
|
||||
IN LIST_ENTRY *Head,
|
||||
IN EFI_EVENT Event
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Search the Head list for a EFI_DATA_HUB_FILTER_DRIVER member that
|
||||
represents Event and return it.
|
||||
|
||||
Arguments:
|
||||
|
||||
Head - Head of dual linked list of EFI_DATA_HUB_FILTER_DRIVER
|
||||
structures.
|
||||
|
||||
Event - Event to be search for in the Head list.
|
||||
|
||||
Returns:
|
||||
|
||||
EFI_DATA_HUB_FILTER_DRIVER - Returned if Event stored in the
|
||||
Head doubly linked list.
|
||||
|
||||
NULL - If Event is not in the list
|
||||
|
||||
--*/
|
||||
{
|
||||
DATA_HUB_FILTER_DRIVER *FilterEntry;
|
||||
LIST_ENTRY *Link;
|
||||
|
||||
for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
|
||||
FilterEntry = FILTER_ENTRY_FROM_LINK (Link);
|
||||
if (FilterEntry->Event == Event) {
|
||||
return FilterEntry;
|
||||
}
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
STATIC
|
||||
EFI_DATA_RECORD_HEADER *
|
||||
GetNextDataRecord (
|
||||
IN LIST_ENTRY *Head,
|
||||
IN UINT64 ClassFilter,
|
||||
IN OUT UINT64 *PtrCurrentMTC
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Search the Head doubly linked list for the passed in MTC. Return the
|
||||
matching element in Head and the MTC on the next entry.
|
||||
|
||||
Arguments:
|
||||
|
||||
Head - Head of Data Log linked list.
|
||||
|
||||
ClassFilter - Only match the MTC if it is in the same Class as the
|
||||
ClassFilter.
|
||||
|
||||
PtrCurrentMTC - On IN contians MTC to search for. On OUT contians next
|
||||
MTC in the data log list or zero if at end of the list.
|
||||
|
||||
Returns:
|
||||
|
||||
EFI_DATA_LOG_ENTRY - Return pointer to data log data from Head list.
|
||||
|
||||
NULL - If no data record exists.
|
||||
|
||||
--*/
|
||||
{
|
||||
EFI_DATA_ENTRY *LogEntry;
|
||||
LIST_ENTRY *Link;
|
||||
BOOLEAN ReturnFirstEntry;
|
||||
EFI_DATA_RECORD_HEADER *Record;
|
||||
EFI_DATA_ENTRY *NextLogEntry;
|
||||
|
||||
//
|
||||
// If MonotonicCount == 0 just return the first one
|
||||
//
|
||||
ReturnFirstEntry = (BOOLEAN) (*PtrCurrentMTC == 0);
|
||||
|
||||
Record = NULL;
|
||||
for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
|
||||
LogEntry = DATA_ENTRY_FROM_LINK (Link);
|
||||
if ((LogEntry->Record->DataRecordClass & ClassFilter) == 0) {
|
||||
//
|
||||
// Skip any entry that does not have the correct ClassFilter
|
||||
//
|
||||
continue;
|
||||
}
|
||||
|
||||
if ((LogEntry->Record->LogMonotonicCount == *PtrCurrentMTC) || ReturnFirstEntry) {
|
||||
//
|
||||
// Return record to the user
|
||||
//
|
||||
Record = LogEntry->Record;
|
||||
|
||||
//
|
||||
// Calculate the next MTC value. If there is no next entry set
|
||||
// MTC to zero.
|
||||
//
|
||||
*PtrCurrentMTC = 0;
|
||||
for (Link = Link->ForwardLink; Link != Head; Link = Link->ForwardLink) {
|
||||
NextLogEntry = DATA_ENTRY_FROM_LINK (Link);
|
||||
if ((NextLogEntry->Record->DataRecordClass & ClassFilter) != 0) {
|
||||
//
|
||||
// Return the MTC of the next thing to search for if found
|
||||
//
|
||||
*PtrCurrentMTC = NextLogEntry->Record->LogMonotonicCount;
|
||||
break;
|
||||
}
|
||||
}
|
||||
//
|
||||
// Record found exit loop and return
|
||||
//
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return Record;
|
||||
}
|
||||
//
|
||||
// Module Global:
|
||||
// Since this driver will only ever produce one instance of the Logging Hub
|
||||
// protocol you are not required to dynamically allocate the PrivateData.
|
||||
//
|
||||
DATA_HUB_INSTANCE mPrivateData;
|
||||
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
DataHubInstall (
|
||||
IN EFI_HANDLE ImageHandle,
|
||||
IN EFI_SYSTEM_TABLE *SystemTable
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Install Driver to produce Data Hub protocol.
|
||||
|
||||
Arguments:
|
||||
(Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT)
|
||||
|
||||
Returns:
|
||||
|
||||
EFI_SUCCESS - Logging Hub protocol installed
|
||||
|
||||
Other - No protocol installed, unload driver.
|
||||
|
||||
--*/
|
||||
{
|
||||
EFI_STATUS Status;
|
||||
UINT32 HighMontonicCount;
|
||||
|
||||
mPrivateData.Signature = DATA_HUB_INSTANCE_SIGNATURE;
|
||||
mPrivateData.DataHub.LogData = DataHubLogData;
|
||||
mPrivateData.DataHub.GetNextRecord = DataHubGetNextRecord;
|
||||
mPrivateData.DataHub.RegisterFilterDriver = DataHubRegisterFilterDriver;
|
||||
mPrivateData.DataHub.UnregisterFilterDriver = DataHubUnregisterFilterDriver;
|
||||
|
||||
//
|
||||
// Initialize Private Data in CORE_LOGGING_HUB_INSTANCE that is
|
||||
// required by this protocol
|
||||
//
|
||||
InitializeListHead (&mPrivateData.DataListHead);
|
||||
InitializeListHead (&mPrivateData.FilterDriverListHead);
|
||||
|
||||
EfiInitializeLock (&mPrivateData.DataLock, TPL_NOTIFY);
|
||||
|
||||
//
|
||||
// Make sure we get a bigger MTC number on every boot!
|
||||
//
|
||||
Status = gRT->GetNextHighMonotonicCount (&HighMontonicCount);
|
||||
if (EFI_ERROR (Status)) {
|
||||
//
|
||||
// if system service fails pick a sane value.
|
||||
//
|
||||
mPrivateData.GlobalMonotonicCount = 0;
|
||||
} else {
|
||||
mPrivateData.GlobalMonotonicCount = LShiftU64 ((UINT64) HighMontonicCount, 32);
|
||||
}
|
||||
//
|
||||
// Make a new handle and install the protocol
|
||||
//
|
||||
mPrivateData.Handle = NULL;
|
||||
Status = gBS->InstallProtocolInterface (
|
||||
&mPrivateData.Handle,
|
||||
&gEfiDataHubProtocolGuid,
|
||||
EFI_NATIVE_INTERFACE,
|
||||
&mPrivateData.DataHub
|
||||
);
|
||||
return Status;
|
||||
}
|
||||
Reference in New Issue
Block a user