diff options
Diffstat (limited to 'EdkModulePkg/Core/Dxe/Event/event.c')
| -rw-r--r-- | EdkModulePkg/Core/Dxe/Event/event.c | 757 |
1 files changed, 0 insertions, 757 deletions
diff --git a/EdkModulePkg/Core/Dxe/Event/event.c b/EdkModulePkg/Core/Dxe/Event/event.c deleted file mode 100644 index b3ba71de81..0000000000 --- a/EdkModulePkg/Core/Dxe/Event/event.c +++ /dev/null @@ -1,757 +0,0 @@ -/*++
-
-Copyright (c) 2006 - 2007, 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:
-
- event.c
-
-Abstract:
-
- EFI Event support
-
---*/
-
-
-#include <DxeMain.h>
-
-//
-// Enumerate the valid types
-//
-UINT32 mEventTable[] = {
- //
- // 0x80000200 Timer event with a notification function that is
- // queue when the event is signaled with SignalEvent()
- //
- EVT_TIMER | EVT_NOTIFY_SIGNAL,
- //
- // 0x80000000 Timer event without a notification function. It can be
- // signaled with SignalEvent() and checked with CheckEvent() or WaitForEvent().
- //
- EVT_TIMER,
- //
- // 0x00000100 Generic event with a notification function that
- // can be waited on with CheckEvent() or WaitForEvent()
- //
- EVT_NOTIFY_WAIT,
- //
- // 0x00000200 Generic event with a notification function that
- // is queue when the event is signaled with SignalEvent()
- //
- EVT_NOTIFY_SIGNAL,
- //
- // 0x00000201 ExitBootServicesEvent.
- //
- EVT_SIGNAL_EXIT_BOOT_SERVICES,
- //
- // 0x60000202 SetVirtualAddressMapEvent.
- //
- EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE,
-
- //
- // 0x00000000 Generic event without a notification function.
- // It can be signaled with SignalEvent() and checked with CheckEvent()
- // or WaitForEvent().
- //
- 0x00000000,
- //
- // 0x80000100 Timer event with a notification function that can be
- // waited on with CheckEvent() or WaitForEvent()
- //
- EVT_TIMER | EVT_NOTIFY_WAIT,
-};
-
-STATIC
-VOID
-CoreAcquireEventLock (
- VOID
- )
-/*++
-
-Routine Description:
-
- Enter critical section by acquiring the lock on gEventQueueLock.
-
-Arguments:
-
- None
-
-Returns:
-
- None
-
---*/
-{
- CoreAcquireLock (&gEventQueueLock);
-}
-
-STATIC
-VOID
-CoreReleaseEventLock (
- VOID
- )
-/*++
-
-Routine Description:
-
- Exit critical section by releasing the lock on gEventQueueLock.
-
-Arguments:
-
- None
-
-Returns:
-
- None
-
---*/
-{
- CoreReleaseLock (&gEventQueueLock);
-}
-
-
-EFI_STATUS
-CoreInitializeEventServices (
- VOID
- )
-/*++
-
-Routine Description:
-
- Initializes "event" support and populates parts of the System and Runtime Table.
-
-Arguments:
-
- None
-
-Returns:
-
- EFI_SUCCESS - Always return success
-
---*/
-{
- UINTN Index;
-
- for (Index=0; Index <= TPL_HIGH_LEVEL; Index++) {
- InitializeListHead (&gEventQueue[Index]);
- }
-
- CoreInitializeTimer ();
-
- return EFI_SUCCESS;
-}
-
-
-VOID
-CoreDispatchEventNotifies (
- IN EFI_TPL Priority
- )
-/*++
-
-Routine Description:
-
- Dispatches all pending events.
-
-Arguments:
-
- Priority - The task priority level of event notifications to dispatch
-
-Returns:
-
- None
-
---*/
-{
- IEVENT *Event;
- LIST_ENTRY *Head;
-
- CoreAcquireEventLock ();
- ASSERT (gEventQueueLock.OwnerTpl == Priority);
- Head = &gEventQueue[Priority];
-
- //
- // Dispatch all the pending notifications
- //
- while (!IsListEmpty (Head)) {
-
- Event = CR (Head->ForwardLink, IEVENT, NotifyLink, EVENT_SIGNATURE);
- RemoveEntryList (&Event->NotifyLink);
-
- Event->NotifyLink.ForwardLink = NULL;
-
- //
- // Only clear the SIGNAL status if it is a SIGNAL type event.
- // WAIT type events are only cleared in CheckEvent()
- //
- if (Event->Type & EVT_NOTIFY_SIGNAL) {
- Event->SignalCount = 0;
- }
-
- CoreReleaseEventLock ();
-
- //
- // Notify this event
- //
- ASSERT (Event->NotifyFunction != NULL);
- Event->NotifyFunction (Event, Event->NotifyContext);
-
- //
- // Check for next pending event
- //
- CoreAcquireEventLock ();
- }
-
- gEventPending &= ~(1 << Priority);
- CoreReleaseEventLock ();
-}
-
-
-STATIC
-VOID
-CoreNotifyEvent (
- IN IEVENT *Event
- )
-/*++
-
-Routine Description:
-
- Queues the event's notification function to fire
-
-Arguments:
-
- Event - The Event to notify
-
-Returns:
-
- None
-
---*/
-{
-
- //
- // Event database must be locked
- //
- ASSERT_LOCKED (&gEventQueueLock);
-
- //
- // If the event is queued somewhere, remove it
- //
-
- if (Event->NotifyLink.ForwardLink != NULL) {
- RemoveEntryList (&Event->NotifyLink);
- Event->NotifyLink.ForwardLink = NULL;
- }
-
- //
- // Queue the event to the pending notification list
- //
-
- InsertTailList (&gEventQueue[Event->NotifyTpl], &Event->NotifyLink);
- gEventPending |= (UINTN)(1 << Event->NotifyTpl);
-}
-
-
-
-VOID
-CoreNotifySignalList (
- IN EFI_GUID *EventGroup
- )
-/*++
-
-Routine Description:
- Signals all events in the EventGroup
-
-Arguments:
- EventGroup - The list to signal
-
-Returns:
-
- None
-
---*/
-{
- LIST_ENTRY *Link;
- LIST_ENTRY *Head;
- IEVENT *Event;
-
- CoreAcquireEventLock ();
-
- Head = &gEventSignalQueue;
- for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
- Event = CR (Link, IEVENT, SignalLink, EVENT_SIGNATURE);
- if (CompareGuid (&Event->EventGroup, EventGroup)) {
- CoreNotifyEvent (Event);
- }
- }
-
- CoreReleaseEventLock ();
-}
-
-EFI_STATUS
-EFIAPI
-CoreCreateEvent (
- IN UINT32 Type,
- IN EFI_TPL NotifyTpl,
- IN EFI_EVENT_NOTIFY NotifyFunction, OPTIONAL
- IN VOID *NotifyContext, OPTIONAL
- OUT EFI_EVENT *Event
- )
-/*++
-
-Routine Description:
- Creates a general-purpose event structure
-
-Arguments:
- Type - The type of event to create and its mode and attributes
- NotifyTpl - The task priority level of event notifications
- NotifyFunction - Pointer to the events notification function
- NotifyContext - Pointer to the notification functions context; corresponds to
- parameter "Context" in the notification function
- Event - Pointer to the newly created event if the call succeeds; undefined otherwise
-
-Returns:
- EFI_SUCCESS - The event structure was created
- EFI_INVALID_PARAMETER - One of the parameters has an invalid value
- EFI_OUT_OF_RESOURCES - The event could not be allocated
-
---*/
-{
- EFI_GUID *GuidPtr;
- EFI_EVENT_NOTIFY Function;
-
- GuidPtr = NULL;
- Function = NotifyFunction;
-
- //
- // Convert EFI 1.10 Events to thier UEFI 2.0 CreateEventEx mapping
- //
- if (Type == EVT_SIGNAL_EXIT_BOOT_SERVICES) {
- GuidPtr = &gEfiEventExitBootServicesGuid;
- } else if (Type == EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE) {
- GuidPtr = &gEfiEventVirtualAddressChangeGuid;
- }
-
- return CoreCreateEventEx (Type, NotifyTpl, Function, NotifyContext, GuidPtr, Event);
-}
-
-
-EFI_STATUS
-EFIAPI
-CoreCreateEventEx (
- IN UINT32 Type,
- IN EFI_TPL NotifyTpl,
- IN EFI_EVENT_NOTIFY NotifyFunction, OPTIONAL
- IN CONST VOID *NotifyContext, OPTIONAL
- IN CONST EFI_GUID *EventGroup, OPTIONAL
- OUT EFI_EVENT *Event
- )
-/*++
-
-Routine Description:
- Creates a general-purpose event structure
-
-Arguments:
- Type - The type of event to create and its mode and attributes
- NotifyTpl - The task priority level of event notifications
- NotifyFunction - Pointer to the events notification function
- NotifyContext - Pointer to the notification functions context; corresponds to
- parameter "Context" in the notification function
- EventGrout - GUID for EventGroup if NULL act the same as gBS->CreateEvent().
- Event - Pointer to the newly created event if the call succeeds; undefined otherwise
-
-Returns:
- EFI_SUCCESS - The event structure was created
- EFI_INVALID_PARAMETER - One of the parameters has an invalid value
- EFI_OUT_OF_RESOURCES - The event could not be allocated
-
---*/
-{
- EFI_STATUS Status;
- IEVENT *IEvent;
- INTN Index;
-
-
- if ((Event == NULL) || (NotifyTpl == TPL_APPLICATION)) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // Check to make sure no reserved flags are set
- //
- Status = EFI_INVALID_PARAMETER;
- for (Index = 0; Index < (sizeof (mEventTable) / sizeof (UINT32)); Index++) {
- if (Type == mEventTable[Index]) {
- Status = EFI_SUCCESS;
- break;
- }
- }
- if(EFI_ERROR (Status)) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // If it's a notify type of event, check its parameters
- //
- if ((Type & (EVT_NOTIFY_WAIT | EVT_NOTIFY_SIGNAL))) {
- //
- // Check for an invalid NotifyFunction or NotifyTpl
- //
- if ((NotifyFunction == NULL) ||
- (NotifyTpl < TPL_APPLICATION) ||
- (NotifyTpl >= TPL_HIGH_LEVEL)) {
- return EFI_INVALID_PARAMETER;
- }
-
- } else {
- //
- // No notification needed, zero ignored values
- //
- NotifyTpl = 0;
- NotifyFunction = NULL;
- NotifyContext = NULL;
- }
-
- //
- // Allcoate and initialize a new event structure.
- //
- Status = CoreAllocatePool (
- (Type & EVT_RUNTIME) ? EfiRuntimeServicesData: EfiBootServicesData,
- sizeof (IEVENT),
- (VOID **)&IEvent
- );
- if (EFI_ERROR (Status)) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- SetMem (IEvent, sizeof (IEVENT), 0);
-
- IEvent->Signature = EVENT_SIGNATURE;
- IEvent->Type = Type;
-
- IEvent->NotifyTpl = NotifyTpl;
- IEvent->NotifyFunction = NotifyFunction;
- IEvent->NotifyContext = (VOID *)NotifyContext;
- if (EventGroup != NULL) {
- CopyGuid (&IEvent->EventGroup, EventGroup);
- IEvent->ExFlag = TRUE;
- }
-
- *Event = IEvent;
-
- if (Type & EVT_RUNTIME) {
- //
- // Keep a list of all RT events so we can tell the RT AP.
- //
- IEvent->RuntimeData.Type = Type;
- IEvent->RuntimeData.NotifyTpl = NotifyTpl;
- IEvent->RuntimeData.NotifyFunction = NotifyFunction;
- IEvent->RuntimeData.NotifyContext = (VOID *) NotifyContext;
- IEvent->RuntimeData.Event = (EFI_EVENT *) IEvent;
- InsertTailList (&gRuntime->EventHead, &IEvent->RuntimeData.Link);
- }
-
- CoreAcquireEventLock ();
-
- if ((Type & EVT_NOTIFY_SIGNAL) != 0x00000000) {
- //
- // The Event's NotifyFunction must be queued whenever the event is signaled
- //
- InsertHeadList (&gEventSignalQueue, &IEvent->SignalLink);
- }
-
- CoreReleaseEventLock ();
-
- //
- // Done
- //
- return EFI_SUCCESS;
-}
-
-
-
-EFI_STATUS
-EFIAPI
-CoreSignalEvent (
- IN EFI_EVENT UserEvent
- )
-/*++
-
-Routine Description:
-
- Signals the event. Queues the event to be notified if needed
-
-Arguments:
-
- UserEvent - The event to signal
-
-Returns:
-
- EFI_INVALID_PARAMETER - Parameters are not valid.
-
- EFI_SUCCESS - The event was signaled.
-
---*/
-{
- IEVENT *Event;
-
- Event = UserEvent;
-
- if (Event == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Event->Signature != EVENT_SIGNATURE) {
- return EFI_INVALID_PARAMETER;
- }
-
- CoreAcquireEventLock ();
-
- //
- // If the event is not already signalled, do so
- //
-
- if (Event->SignalCount == 0x00000000) {
- Event->SignalCount++;
-
- //
- // If signalling type is a notify function, queue it
- //
- if (Event->Type & EVT_NOTIFY_SIGNAL) {
- if (Event->ExFlag) {
- //
- // The CreateEventEx() style requires all members of the Event Group
- // to be signaled.
- //
- CoreReleaseEventLock ();
- CoreNotifySignalList (&Event->EventGroup);
- CoreAcquireEventLock ();
- } else {
- CoreNotifyEvent (Event);
- }
- }
- }
-
- CoreReleaseEventLock ();
- return EFI_SUCCESS;
-}
-
-
-EFI_STATUS
-EFIAPI
-CoreCheckEvent (
- IN EFI_EVENT UserEvent
- )
-/*++
-
-Routine Description:
-
- Check the status of an event
-
-Arguments:
-
- UserEvent - The event to check
-
-Returns:
-
- EFI_SUCCESS - The event is in the signaled state
- EFI_NOT_READY - The event is not in the signaled state
- EFI_INVALID_PARAMETER - Event is of type EVT_NOTIFY_SIGNAL
-
---*/
-
-{
- IEVENT *Event;
- EFI_STATUS Status;
-
- Event = UserEvent;
-
- if (Event == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Event->Signature != EVENT_SIGNATURE) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Event->Type & EVT_NOTIFY_SIGNAL) {
- return EFI_INVALID_PARAMETER;
- }
-
- Status = EFI_NOT_READY;
-
- if (!Event->SignalCount && (Event->Type & EVT_NOTIFY_WAIT)) {
-
- //
- // Queue the wait notify function
- //
-
- CoreAcquireEventLock ();
- if (!Event->SignalCount) {
- CoreNotifyEvent (Event);
- }
- CoreReleaseEventLock ();
- }
-
- //
- // If the even looks signalled, get the lock and clear it
- //
-
- if (Event->SignalCount) {
- CoreAcquireEventLock ();
-
- if (Event->SignalCount) {
- Event->SignalCount = 0;
- Status = EFI_SUCCESS;
- }
-
- CoreReleaseEventLock ();
- }
-
- return Status;
-}
-
-
-
-EFI_STATUS
-EFIAPI
-CoreWaitForEvent (
- IN UINTN NumberOfEvents,
- IN EFI_EVENT *UserEvents,
- OUT UINTN *UserIndex
- )
-/*++
-
-Routine Description:
-
- Stops execution until an event is signaled.
-
-Arguments:
-
- NumberOfEvents - The number of events in the UserEvents array
- UserEvents - An array of EFI_EVENT
- UserIndex - Pointer to the index of the event which satisfied the wait condition
-
-Returns:
-
- EFI_SUCCESS - The event indicated by Index was signaled.
- EFI_INVALID_PARAMETER - The event indicated by Index has a notification function or
- Event was not a valid type
- EFI_UNSUPPORTED - The current TPL is not TPL_APPLICATION
-
---*/
-
-{
- EFI_STATUS Status;
- UINTN Index;
-
- //
- // Can only WaitForEvent at TPL_APPLICATION
- //
- if (gEfiCurrentTpl != TPL_APPLICATION) {
- return EFI_UNSUPPORTED;
- }
-
- for(;;) {
-
- for(Index = 0; Index < NumberOfEvents; Index++) {
-
- Status = CoreCheckEvent (UserEvents[Index]);
-
- //
- // provide index of event that caused problem
- //
- if (Status != EFI_NOT_READY) {
- *UserIndex = Index;
- return Status;
- }
- }
-
- //
- // This was the location of the Idle loop callback in EFI 1.x reference
- // code. We don't have that concept in this base at this point.
- //
- }
-}
-
-
-EFI_STATUS
-EFIAPI
-CoreCloseEvent (
- IN EFI_EVENT UserEvent
- )
-/*++
-
-Routine Description:
-
- Closes an event and frees the event structure.
-
-Arguments:
-
- UserEvent - Event to close
-
-Returns:
-
- EFI_INVALID_PARAMETER - Parameters are not valid.
-
- EFI_SUCCESS - The event has been closed
-
---*/
-
-{
- EFI_STATUS Status;
- IEVENT *Event;
-
- Event = UserEvent;
-
- if (Event == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Event->Signature != EVENT_SIGNATURE) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // If it's a timer event, make sure it's not pending
- //
- if (Event->Type & EVT_TIMER) {
- CoreSetTimer (Event, TimerCancel, 0);
- }
-
- CoreAcquireEventLock ();
-
- //
- // If the event is queued somewhere, remove it
- //
-
- if (Event->RuntimeData.Link.ForwardLink != NULL) {
- RemoveEntryList (&Event->RuntimeData.Link);
- }
-
- if (Event->NotifyLink.ForwardLink != NULL) {
- RemoveEntryList (&Event->NotifyLink);
- }
-
- if (Event->SignalLink.ForwardLink != NULL) {
- RemoveEntryList (&Event->SignalLink);
- }
-
- CoreReleaseEventLock ();
-
- //
- // If the event is registered on a protocol notify, then remove it from the protocol database
- //
- CoreUnregisterProtocolNotify (Event);
-
- Status = CoreFreePool (Event);
- ASSERT_EFI_ERROR (Status);
-
- return Status;
-}
|