diff options
Diffstat (limited to 'EdkModulePkg/Core/Dxe/Event/timer.c')
| -rw-r--r-- | EdkModulePkg/Core/Dxe/Event/timer.c | 388 |
1 files changed, 0 insertions, 388 deletions
diff --git a/EdkModulePkg/Core/Dxe/Event/timer.c b/EdkModulePkg/Core/Dxe/Event/timer.c deleted file mode 100644 index 0f886f96d3..0000000000 --- a/EdkModulePkg/Core/Dxe/Event/timer.c +++ /dev/null @@ -1,388 +0,0 @@ -/*++
-
-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:
-
- timer.c
-
-Abstract:
-
- EFI Event support
-
-Revision History
-
---*/
-
-
-#include <DxeMain.h>
-
-//
-// Internal prototypes
-//
-STATIC
-UINT64
-CoreCurrentSystemTime (
- VOID
- );
-
-STATIC
-VOID
-EFIAPI
-CoreCheckTimers (
- IN EFI_EVENT Event,
- IN VOID *Context
- );
-
-STATIC
-VOID
-CoreInsertEventTimer (
- IN IEVENT *Event
- );
-
-//
-// Internal data
-//
-
-static LIST_ENTRY mEfiTimerList = INITIALIZE_LIST_HEAD_VARIABLE (mEfiTimerList);
-static EFI_LOCK mEfiTimerLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_HIGH_LEVEL - 1);
-static EFI_EVENT mEfiCheckTimerEvent;
-
-static EFI_LOCK mEfiSystemTimeLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_HIGH_LEVEL);
-static UINT64 mEfiSystemTime = 0;
-
-//
-// Timer functions
-//
-
-VOID
-CoreInitializeTimer (
- VOID
- )
-/*++
-
-Routine Description:
-
- Initializes timer support
-
-Arguments:
-
- None
-
-Returns:
-
- None
-
---*/
-{
- EFI_STATUS Status;
-
- Status = CoreCreateEvent (
- EVT_NOTIFY_SIGNAL,
- TPL_HIGH_LEVEL - 1,
- CoreCheckTimers,
- NULL,
- &mEfiCheckTimerEvent
- );
- ASSERT_EFI_ERROR (Status);
-}
-
-STATIC
-UINT64
-CoreCurrentSystemTime (
- VOID
- )
-/*++
-
-Routine Description:
-
- Returns the current system time
-
-Arguments:
-
- None
-
-Returns:
-
- Returns the current system time
-
---*/
-{
- UINT64 SystemTime;
-
- CoreAcquireLock (&mEfiSystemTimeLock);
- SystemTime = mEfiSystemTime;
- CoreReleaseLock (&mEfiSystemTimeLock);
- return SystemTime;
-}
-
-VOID
-EFIAPI
-CoreTimerTick (
- IN UINT64 Duration
- )
-/*++
-
-Routine Description:
-
- Called by the platform code to process a tick.
-
-Arguments:
-
- Duration - The number of 100ns elasped since the last call to TimerTick
-
-Returns:
-
- None
-
---*/
-{
- IEVENT *Event;
-
- //
- // Check runtiem flag in case there are ticks while exiting boot services
- //
-
- CoreAcquireLock (&mEfiSystemTimeLock);
-
- //
- // Update the system time
- //
-
- mEfiSystemTime += Duration;
-
- //
- // If the head of the list is expired, fire the timer event
- // to process it
- //
-
- if (!IsListEmpty (&mEfiTimerList)) {
- Event = CR (mEfiTimerList.ForwardLink, IEVENT, u.Timer.Link, EVENT_SIGNATURE);
-
- if (Event->u.Timer.TriggerTime <= mEfiSystemTime) {
- CoreSignalEvent (mEfiCheckTimerEvent);
- }
- }
-
- CoreReleaseLock (&mEfiSystemTimeLock);
-}
-
-STATIC
-VOID
-EFIAPI
-CoreCheckTimers (
- IN EFI_EVENT CheckEvent,
- IN VOID *Context
- )
-/*++
-
-Routine Description:
-
- Checks the sorted timer list against the current system time.
- Signals any expired event timer.
-
-Arguments:
-
- CheckEvent - Not used
-
- Context - Not used
-
-Returns:
-
- None
-
---*/
-{
- UINT64 SystemTime;
- IEVENT *Event;
-
- //
- // Check the timer database for expired timers
- //
-
- CoreAcquireLock (&mEfiTimerLock);
- SystemTime = CoreCurrentSystemTime ();
-
- while (!IsListEmpty (&mEfiTimerList)) {
- Event = CR (mEfiTimerList.ForwardLink, IEVENT, u.Timer.Link, EVENT_SIGNATURE);
-
- //
- // If this timer is not expired, then we're done
- //
-
- if (Event->u.Timer.TriggerTime > SystemTime) {
- break;
- }
-
- //
- // Remove this timer from the timer queue
- //
-
- RemoveEntryList (&Event->u.Timer.Link);
- Event->u.Timer.Link.ForwardLink = NULL;
-
- //
- // Signal it
- //
- CoreSignalEvent (Event);
-
- //
- // If this is a periodic timer, set it
- //
- if (Event->u.Timer.Period) {
-
- //
- // Compute the timers new trigger time
- //
-
- Event->u.Timer.TriggerTime = Event->u.Timer.TriggerTime + Event->u.Timer.Period;
-
- //
- // If that's before now, then reset the timer to start from now
- //
- if (Event->u.Timer.TriggerTime <= SystemTime) {
- Event->u.Timer.TriggerTime = SystemTime;
- CoreSignalEvent (mEfiCheckTimerEvent);
- }
-
- //
- // Add the timer
- //
-
- CoreInsertEventTimer (Event);
- }
- }
-
- CoreReleaseLock (&mEfiTimerLock);
-}
-
-STATIC
-VOID
-CoreInsertEventTimer (
- IN IEVENT *Event
- )
-/*++
-
-Routine Description:
-
- Inserts the timer event
-
-Arguments:
-
- Event - Points to the internal structure of timer event to be installed
-
-Returns:
-
- None
-
---*/
-{
- UINT64 TriggerTime;
- LIST_ENTRY *Link;
- IEVENT *Event2;
-
- ASSERT_LOCKED (&mEfiTimerLock);
-
- //
- // Get the timer's trigger time
- //
-
- TriggerTime = Event->u.Timer.TriggerTime;
-
- //
- // Insert the timer into the timer database in assending sorted order
- //
-
- for (Link = mEfiTimerList.ForwardLink; Link != &mEfiTimerList; Link = Link->ForwardLink) {
- Event2 = CR (Link, IEVENT, u.Timer.Link, EVENT_SIGNATURE);
-
- if (Event2->u.Timer.TriggerTime > TriggerTime) {
- break;
- }
- }
-
- InsertTailList (Link, &Event->u.Timer.Link);
-}
-
-
-
-EFI_STATUS
-EFIAPI
-CoreSetTimer (
- IN EFI_EVENT UserEvent,
- IN EFI_TIMER_DELAY Type,
- IN UINT64 TriggerTime
- )
-/*++
-
-Routine Description:
-
- Sets the type of timer and the trigger time for a timer event.
-
-Arguments:
-
- UserEvent - The timer event that is to be signaled at the specified time
- Type - The type of time that is specified in TriggerTime
- TriggerTime - The number of 100ns units until the timer expires
-
-Returns:
-
- EFI_SUCCESS - The event has been set to be signaled at the requested time
- EFI_INVALID_PARAMETER - Event or Type is not valid
-
---*/
-{
- IEVENT *Event;
-
- Event = UserEvent;
-
- if (Event == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Event->Signature != EVENT_SIGNATURE) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (Type < 0 || Type > TimerRelative || !(Event->Type & EVT_TIMER)) {
- return EFI_INVALID_PARAMETER;
- }
-
- CoreAcquireLock (&mEfiTimerLock);
-
- //
- // If the timer is queued to the timer database, remove it
- //
-
- if (Event->u.Timer.Link.ForwardLink != NULL) {
- RemoveEntryList (&Event->u.Timer.Link);
- Event->u.Timer.Link.ForwardLink = NULL;
- }
-
- Event->u.Timer.TriggerTime = 0;
- Event->u.Timer.Period = 0;
-
- if (Type != TimerCancel) {
-
- if (Type == TimerPeriodic) {
- Event->u.Timer.Period = TriggerTime;
- }
-
- Event->u.Timer.TriggerTime = CoreCurrentSystemTime () + TriggerTime;
- CoreInsertEventTimer (Event);
-
- if (TriggerTime == 0) {
- CoreSignalEvent (mEfiCheckTimerEvent);
- }
- }
-
- CoreReleaseLock (&mEfiTimerLock);
- return EFI_SUCCESS;
-}
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