-/** @file \r
-\r
+/** @file\r
Core Timer Services\r
\r
-Copyright (c) 2006 - 2008, Intel Corporation\r
-All rights reserved. This program and the accompanying materials\r
+Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r
+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
\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
-\r
-**/\r
-STATIC\r
-UINT64\r
-CoreCurrentSystemTime (\r
- VOID\r
- );\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
+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
-STATIC\r
-VOID\r
-EFIAPI\r
-CoreCheckTimers (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
- );\r
+EFI_LOCK mEfiSystemTimeLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_HIGH_LEVEL);\r
+UINT64 mEfiSystemTime = 0;\r
\r
+//\r
+// Timer functions\r
+//\r
/**\r
Inserts the timer event.\r
\r
- @param Event Points to the internal structure of timer event \r
+ @param Event Points to the internal structure of timer event\r
to be installed\r
\r
**/\r
-STATIC\r
VOID\r
CoreInsertEventTimer (\r
- IN IEVENT *Event\r
- );\r
-\r
-//\r
-// Internal data\r
-//\r
-\r
-STATIC LIST_ENTRY mEfiTimerList = INITIALIZE_LIST_HEAD_VARIABLE (mEfiTimerList);\r
-STATIC EFI_LOCK mEfiTimerLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_HIGH_LEVEL - 1);\r
-STATIC EFI_EVENT mEfiCheckTimerEvent;\r
-\r
-STATIC EFI_LOCK mEfiSystemTimeLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_HIGH_LEVEL);\r
-STATIC UINT64 mEfiSystemTime = 0;\r
+ IN IEVENT *Event\r
+ )\r
+{\r
+ UINT64 TriggerTime;\r
+ LIST_ENTRY *Link;\r
+ IEVENT *Event2;\r
\r
-//\r
-// Timer functions\r
-//\r
+ ASSERT_LOCKED (&mEfiTimerLock);\r
\r
+ //\r
+ // Get the timer's trigger time\r
+ //\r
+ TriggerTime = Event->Timer.TriggerTime;\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
@return The current system time\r
\r
**/\r
-STATIC\r
UINT64\r
CoreCurrentSystemTime (\r
VOID\r
CoreAcquireLock (&mEfiSystemTimeLock);\r
SystemTime = mEfiSystemTime;\r
CoreReleaseLock (&mEfiSystemTimeLock);\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
-\r
- CoreAcquireLock (&mEfiSystemTimeLock);\r
-\r
- //\r
- // Update the system time\r
- //\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
-\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
+ return SystemTime;\r
}\r
\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 CheckEvent Not used\r
@param Context Not used\r
\r
**/\r
-STATIC\r
VOID\r
EFIAPI\r
CoreCheckTimers (\r
//\r
// Check the timer database for expired timers\r
//\r
-\r
CoreAcquireLock (&mEfiTimerLock);\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
-\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
-\r
+ if (Event->Timer.Period != 0) {\r
//\r
// Compute the timers new trigger time\r
//\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
//\r
// Add the timer\r
//\r
-\r
CoreInsertEventTimer (Event);\r
}\r
}\r
\r
\r
/**\r
- Inserts the timer event.\r
-\r
- @param Event Points to the internal structure of timer event \r
- to be installed\r
+ Initializes timer support.\r
\r
**/\r
-STATIC\r
VOID\r
-CoreInsertEventTimer (\r
- IN IEVENT *Event\r
+CoreInitializeTimer (\r
+ VOID\r
)\r
{\r
- UINT64 TriggerTime;\r
- LIST_ENTRY *Link;\r
- IEVENT *Event2;\r
+ EFI_STATUS Status;\r
\r
- ASSERT_LOCKED (&mEfiTimerLock);\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
+/**\r
+ Called by the platform code to process a tick.\r
+\r
+ @param Duration The number of 100ns elapsed 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
- // Get the timer's trigger time\r
+ // Check runtiem flag in case there are ticks while exiting boot services\r
//\r
-\r
- TriggerTime = Event->u.Timer.TriggerTime;\r
+ CoreAcquireLock (&mEfiSystemTimeLock);\r
\r
//\r
- // Insert the timer into the timer database in assending sorted order\r
+ // Update the system time\r
//\r
+ mEfiSystemTime += Duration;\r
\r
- for (Link = mEfiTimerList.ForwardLink; Link != &mEfiTimerList; Link = Link->ForwardLink) {\r
- Event2 = CR (Link, IEVENT, u.Timer.Link, EVENT_SIGNATURE);\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, 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
/**\r
Sets the type of timer and the trigger time for a timer event.\r
\r
- @param UserEvent The timer event that is to be signaled at the \r
- specified time \r
- @param Type The type of time that is specified in \r
- TriggerTime \r
- @param TriggerTime The number of 100ns units until the timer \r
- expires \r
+ @param UserEvent The timer event that is to be signaled at the\r
+ specified time\r
+ @param Type The type of time that is specified in\r
+ TriggerTime\r
+ @param TriggerTime The number of 100ns units until the timer\r
+ expires\r
\r
- @retval EFI_SUCCESS The event has been set to be signaled at the \r
- requested time \r
+ @retval EFI_SUCCESS The event has been set to be signaled at the\r
+ requested time\r
@retval EFI_INVALID_PARAMETER Event or Type is not valid\r
\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
-\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
+ 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
}\r
\r
CoreReleaseLock (&mEfiTimerLock);\r
+\r
return EFI_SUCCESS;\r
}\r
projects / mirror_edk2.git / blobdiff