/** @file\r
Core Timer Services\r
\r
-Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r
-All rights reserved. This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution. The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
-\r
-#include <DxeMain.h>\r
+#include "DxeMain.h"\r
+#include "Event.h"\r
\r
//\r
-// Internal prototypes\r
+// Internal data\r
//\r
-/**\r
- Returns the current system time.\r
\r
- @return The current system time\r
+LIST_ENTRY mEfiTimerList = INITIALIZE_LIST_HEAD_VARIABLE (mEfiTimerList);\r
+EFI_LOCK mEfiTimerLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_HIGH_LEVEL - 1);\r
+EFI_EVENT mEfiCheckTimerEvent = NULL;\r
\r
-**/\r
-UINT64\r
-CoreCurrentSystemTime (\r
- VOID\r
- );\r
+EFI_LOCK mEfiSystemTimeLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_HIGH_LEVEL);\r
+UINT64 mEfiSystemTime = 0;\r
\r
-/**\r
- Checks the sorted timer list against the current system time.\r
- Signals any expired event timer.\r
-\r
- @param CheckEvent Not used\r
- @param Context Not used\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-CoreCheckTimers (\r
- IN EFI_EVENT CheckEvent,\r
- IN VOID *Context\r
- );\r
+//\r
+// Timer functions\r
+//\r
\r
/**\r
Inserts the timer event.\r
**/\r
VOID\r
CoreInsertEventTimer (\r
- IN IEVENT *Event\r
- );\r
-\r
-//\r
-// Internal data\r
-//\r
+ IN IEVENT *Event\r
+ )\r
+{\r
+ UINT64 TriggerTime;\r
+ LIST_ENTRY *Link;\r
+ IEVENT *Event2;\r
\r
-LIST_ENTRY mEfiTimerList = INITIALIZE_LIST_HEAD_VARIABLE (mEfiTimerList);\r
-EFI_LOCK mEfiTimerLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_HIGH_LEVEL - 1);\r
-EFI_EVENT mEfiCheckTimerEvent = NULL;\r
+ ASSERT_LOCKED (&mEfiTimerLock);\r
\r
-EFI_LOCK mEfiSystemTimeLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_HIGH_LEVEL);\r
-UINT64 mEfiSystemTime = 0;\r
+ //\r
+ // Get the timer's trigger time\r
+ //\r
+ TriggerTime = Event->Timer.TriggerTime;\r
\r
-//\r
-// Timer functions\r
-//\r
-/**\r
- Initializes timer support.\r
+ //\r
+ // Insert the timer into the timer database in assending sorted order\r
+ //\r
+ for (Link = mEfiTimerList.ForwardLink; Link != &mEfiTimerList; Link = Link->ForwardLink) {\r
+ Event2 = CR (Link, IEVENT, Timer.Link, EVENT_SIGNATURE);\r
\r
-**/\r
-VOID\r
-CoreInitializeTimer (\r
- VOID\r
- )\r
-{\r
- EFI_STATUS Status;\r
+ if (Event2->Timer.TriggerTime > TriggerTime) {\r
+ break;\r
+ }\r
+ }\r
\r
- Status = CoreCreateEvent (\r
- EVT_NOTIFY_SIGNAL,\r
- TPL_HIGH_LEVEL - 1,\r
- CoreCheckTimers,\r
- NULL,\r
- &mEfiCheckTimerEvent\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
+ InsertTailList (Link, &Event->Timer.Link);\r
}\r
\r
-\r
/**\r
Returns the current system time.\r
\r
VOID\r
)\r
{\r
- UINT64 SystemTime;\r
+ UINT64 SystemTime;\r
\r
CoreAcquireLock (&mEfiSystemTimeLock);\r
SystemTime = mEfiSystemTime;\r
return SystemTime;\r
}\r
\r
-\r
-/**\r
- Called by the platform code to process a tick.\r
-\r
- @param Duration The number of 100ns elasped since the last call\r
- to TimerTick\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-CoreTimerTick (\r
- IN UINT64 Duration\r
- )\r
-{\r
- IEVENT *Event;\r
-\r
- //\r
- // Check runtiem flag in case there are ticks while exiting boot services\r
- //\r
- CoreAcquireLock (&mEfiSystemTimeLock);\r
-\r
- //\r
- // Update the system time\r
- //\r
- mEfiSystemTime += Duration;\r
-\r
- //\r
- // If the head of the list is expired, fire the timer event\r
- // to process it\r
- //\r
- if (!IsListEmpty (&mEfiTimerList)) {\r
- Event = CR (mEfiTimerList.ForwardLink, IEVENT, u.Timer.Link, EVENT_SIGNATURE);\r
-\r
- if (Event->u.Timer.TriggerTime <= mEfiSystemTime) {\r
- CoreSignalEvent (mEfiCheckTimerEvent);\r
- }\r
- }\r
-\r
- CoreReleaseLock (&mEfiSystemTimeLock);\r
-}\r
-\r
-\r
/**\r
Checks the sorted timer list against the current system time.\r
Signals any expired event timer.\r
VOID\r
EFIAPI\r
CoreCheckTimers (\r
- IN EFI_EVENT CheckEvent,\r
- IN VOID *Context\r
+ IN EFI_EVENT CheckEvent,\r
+ IN VOID *Context\r
)\r
{\r
- UINT64 SystemTime;\r
- IEVENT *Event;\r
+ UINT64 SystemTime;\r
+ IEVENT *Event;\r
\r
//\r
// Check the timer database for expired timers\r
SystemTime = CoreCurrentSystemTime ();\r
\r
while (!IsListEmpty (&mEfiTimerList)) {\r
- Event = CR (mEfiTimerList.ForwardLink, IEVENT, u.Timer.Link, EVENT_SIGNATURE);\r
+ Event = CR (mEfiTimerList.ForwardLink, IEVENT, Timer.Link, EVENT_SIGNATURE);\r
\r
//\r
// If this timer is not expired, then we're done\r
//\r
- if (Event->u.Timer.TriggerTime > SystemTime) {\r
+ if (Event->Timer.TriggerTime > SystemTime) {\r
break;\r
}\r
\r
// Remove this timer from the timer queue\r
//\r
\r
- RemoveEntryList (&Event->u.Timer.Link);\r
- Event->u.Timer.Link.ForwardLink = NULL;\r
+ RemoveEntryList (&Event->Timer.Link);\r
+ Event->Timer.Link.ForwardLink = NULL;\r
\r
//\r
// Signal it\r
//\r
// If this is a periodic timer, set it\r
//\r
- if (Event->u.Timer.Period) {\r
+ if (Event->Timer.Period != 0) {\r
//\r
// Compute the timers new trigger time\r
//\r
- Event->u.Timer.TriggerTime = Event->u.Timer.TriggerTime + Event->u.Timer.Period;\r
+ Event->Timer.TriggerTime = Event->Timer.TriggerTime + Event->Timer.Period;\r
\r
//\r
// If that's before now, then reset the timer to start from now\r
//\r
- if (Event->u.Timer.TriggerTime <= SystemTime) {\r
- Event->u.Timer.TriggerTime = SystemTime;\r
+ if (Event->Timer.TriggerTime <= SystemTime) {\r
+ Event->Timer.TriggerTime = SystemTime;\r
CoreSignalEvent (mEfiCheckTimerEvent);\r
}\r
\r
CoreReleaseLock (&mEfiTimerLock);\r
}\r
\r
+/**\r
+ Initializes timer support.\r
+\r
+**/\r
+VOID\r
+CoreInitializeTimer (\r
+ VOID\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ Status = CoreCreateEventInternal (\r
+ EVT_NOTIFY_SIGNAL,\r
+ TPL_HIGH_LEVEL - 1,\r
+ CoreCheckTimers,\r
+ NULL,\r
+ NULL,\r
+ &mEfiCheckTimerEvent\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+}\r
\r
/**\r
- Inserts the timer event.\r
+ Called by the platform code to process a tick.\r
\r
- @param Event Points to the internal structure of timer event\r
- to be installed\r
+ @param Duration The number of 100ns elapsed since the last call\r
+ to TimerTick\r
\r
**/\r
VOID\r
-CoreInsertEventTimer (\r
- IN IEVENT *Event\r
+EFIAPI\r
+CoreTimerTick (\r
+ IN UINT64 Duration\r
)\r
{\r
- UINT64 TriggerTime;\r
- LIST_ENTRY *Link;\r
- IEVENT *Event2;\r
+ IEVENT *Event;\r
\r
- ASSERT_LOCKED (&mEfiTimerLock);\r
+ //\r
+ // Check runtiem flag in case there are ticks while exiting boot services\r
+ //\r
+ CoreAcquireLock (&mEfiSystemTimeLock);\r
\r
//\r
- // Get the timer's trigger time\r
+ // Update the system time\r
//\r
- TriggerTime = Event->u.Timer.TriggerTime;\r
+ mEfiSystemTime += Duration;\r
\r
//\r
- // Insert the timer into the timer database in assending sorted order\r
+ // If the head of the list is expired, fire the timer event\r
+ // to process it\r
//\r
- for (Link = mEfiTimerList.ForwardLink; Link != &mEfiTimerList; Link = Link->ForwardLink) {\r
- Event2 = CR (Link, IEVENT, u.Timer.Link, EVENT_SIGNATURE);\r
+ if (!IsListEmpty (&mEfiTimerList)) {\r
+ Event = CR (mEfiTimerList.ForwardLink, IEVENT, Timer.Link, EVENT_SIGNATURE);\r
\r
- if (Event2->u.Timer.TriggerTime > TriggerTime) {\r
- break;\r
+ if (Event->Timer.TriggerTime <= mEfiSystemTime) {\r
+ CoreSignalEvent (mEfiCheckTimerEvent);\r
}\r
}\r
\r
- InsertTailList (Link, &Event->u.Timer.Link);\r
+ CoreReleaseLock (&mEfiSystemTimeLock);\r
}\r
\r
-\r
-\r
/**\r
Sets the type of timer and the trigger time for a timer event.\r
\r
EFI_STATUS\r
EFIAPI\r
CoreSetTimer (\r
- IN EFI_EVENT UserEvent,\r
- IN EFI_TIMER_DELAY Type,\r
- IN UINT64 TriggerTime\r
+ IN EFI_EVENT UserEvent,\r
+ IN EFI_TIMER_DELAY Type,\r
+ IN UINT64 TriggerTime\r
)\r
{\r
- IEVENT *Event;\r
+ IEVENT *Event;\r
\r
Event = UserEvent;\r
\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
- if (Type < 0 || Type > TimerRelative || !(Event->Type & EVT_TIMER)) {\r
+ if (((UINT32)Type > TimerRelative) || ((Event->Type & EVT_TIMER) == 0)) {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
//\r
// If the timer is queued to the timer database, remove it\r
//\r
- if (Event->u.Timer.Link.ForwardLink != NULL) {\r
- RemoveEntryList (&Event->u.Timer.Link);\r
- Event->u.Timer.Link.ForwardLink = NULL;\r
+ if (Event->Timer.Link.ForwardLink != NULL) {\r
+ RemoveEntryList (&Event->Timer.Link);\r
+ Event->Timer.Link.ForwardLink = NULL;\r
}\r
\r
- Event->u.Timer.TriggerTime = 0;\r
- Event->u.Timer.Period = 0;\r
+ Event->Timer.TriggerTime = 0;\r
+ Event->Timer.Period = 0;\r
\r
if (Type != TimerCancel) {\r
-\r
if (Type == TimerPeriodic) {\r
- Event->u.Timer.Period = TriggerTime;\r
+ if (TriggerTime == 0) {\r
+ gTimer->GetTimerPeriod (gTimer, &TriggerTime);\r
+ }\r
+\r
+ Event->Timer.Period = TriggerTime;\r
}\r
\r
- Event->u.Timer.TriggerTime = CoreCurrentSystemTime () + TriggerTime;\r
+ Event->Timer.TriggerTime = CoreCurrentSystemTime () + TriggerTime;\r
CoreInsertEventTimer (Event);\r
\r
if (TriggerTime == 0) {\r
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