/** @file\r
Core Timer Services\r
\r
-Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r
+Copyright (c) 2006 - 2010, 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
**/\r
\r
\r
-#include <DxeMain.h>\r
-\r
-//\r
-// Internal prototypes\r
-//\r
-/**\r
- Returns the current system time.\r
-\r
- @return The current system time\r
-\r
-**/\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
-\r
-**/\r
-VOID\r
-EFIAPI\r
-CoreCheckTimers (\r
- IN EFI_EVENT CheckEvent,\r
- IN VOID *Context\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
-\r
-**/\r
-VOID\r
-CoreInsertEventTimer (\r
- IN IEVENT *Event\r
- );\r
+#include "DxeMain.h"\r
+#include "Event.h"\r
\r
//\r
// Internal data\r
// Timer functions\r
//\r
/**\r
- Initializes timer support.\r
+ Inserts the timer event.\r
+\r
+ @param Event Points to the internal structure of timer event\r
+ to be installed\r
\r
**/\r
VOID\r
-CoreInitializeTimer (\r
- VOID\r
+CoreInsertEventTimer (\r
+ IN IEVENT *Event\r
)\r
{\r
- EFI_STATUS Status;\r
+ UINT64 TriggerTime;\r
+ LIST_ENTRY *Link;\r
+ IEVENT *Event2;\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
-}\r
+ ASSERT_LOCKED (&mEfiTimerLock);\r
\r
+ //\r
+ // Get the timer's trigger time\r
+ //\r
+ TriggerTime = Event->Timer.TriggerTime;\r
+\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
+ if (Event2->Timer.TriggerTime > TriggerTime) {\r
+ break;\r
+ }\r
+ }\r
+\r
+ InsertTailList (Link, &Event->Timer.Link);\r
+}\r
\r
/**\r
Returns the current system time.\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
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
\r
\r
/**\r
- Inserts the timer event.\r
+ Initializes timer support.\r
\r
- @param Event Points to the internal structure of timer event\r
- to be installed\r
+**/\r
+VOID\r
+CoreInitializeTimer (\r
+ VOID\r
+ )\r
+{\r
+ EFI_STATUS Status;\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
+}\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
-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
return EFI_INVALID_PARAMETER;\r
}\r
\r
- if (Type < 0 || Type > TimerRelative || !(Event->Type & EVT_TIMER)) {\r
+ if (Type < 0 || 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
+ 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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