From 026c3d34ee83b4df623cc80761450a53e9f7622b Mon Sep 17 00:00:00 2001 From: andrewfish Date: Wed, 24 Feb 2010 22:38:46 +0000 Subject: Updated Hardware Interrupt protocol to add an EOI member. Added ARM Data/Instruction syncronization barrier support to the ARM lib. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10063 6f19259b-4bc3-4df7-8a09-765794883524 --- Omap35xxPkg/TimerDxe/Timer.c | 137 +------------------------------------------ 1 file changed, 1 insertion(+), 136 deletions(-) (limited to 'Omap35xxPkg/TimerDxe') diff --git a/Omap35xxPkg/TimerDxe/Timer.c b/Omap35xxPkg/TimerDxe/Timer.c index 2753b98d1a..3ae0cc2ada 100644 --- a/Omap35xxPkg/TimerDxe/Timer.c +++ b/Omap35xxPkg/TimerDxe/Timer.c @@ -59,19 +59,13 @@ volatile UINTN gVector; C Interrupt Handler calledin the interrupt context when Source interrupt is active. - @param Source Source of the interrupt. Hardware routing off a specific platform defines - what source means. @param SystemContext Pointer to system register context. Mostly used by debuggers and will - update the system context after the return from the interrupt if - modified. Don't change these values unless you know what you are doing - - **/ VOID EFIAPI @@ -85,15 +79,10 @@ TimerInterruptHandler ( // - // DXE core uses this callback for the EFI timer tick. The DXE core uses locks - // that raise to TPL_HIGH and then restore back to current level. Thus we need - // to make sure TPL level is set to TPL_HIGH while we are handling the timer tick. - // - OriginalTPL = gBS->RaiseTPL (TPL_HIGH_LEVEL); @@ -115,63 +104,33 @@ TimerInterruptHandler ( } /** - This function registers the handler NotifyFunction so it is called every time - the timer interrupt fires. It also passes the amount of time since the last - handler call to the NotifyFunction. If NotifyFunction is NULL, then the - handler is unregistered. If the handler is registered, then EFI_SUCCESS is - returned. If the CPU does not support registering a timer interrupt handler, - then EFI_UNSUPPORTED is returned. If an attempt is made to register a handler - when a handler is already registered, then EFI_ALREADY_STARTED is returned. - If an attempt is made to unregister a handler when a handler is not registered, - then EFI_INVALID_PARAMETER is returned. If an error occurs attempting to - register the NotifyFunction with the timer interrupt, then EFI_DEVICE_ERROR - is returned. - - @param This The EFI_TIMER_ARCH_PROTOCOL instance. - @param NotifyFunction The function to call when a timer interrupt fires. This - function executes at TPL_HIGH_LEVEL. The DXE Core will - register a handler for the timer interrupt, so it can know - how much time has passed. This information is used to - signal timer based events. NULL will unregister the handler. - - - @retval EFI_SUCCESS The timer handler was registered. - @retval EFI_UNSUPPORTED The platform does not support timer interrupts. - @retval EFI_ALREADY_STARTED NotifyFunction is not NULL, and a handler is already - registered. - @retval EFI_INVALID_PARAMETER NotifyFunction is NULL, and a handler was not - previously registered. - @retval EFI_DEVICE_ERROR The timer handler could not be registered. - - **/ - EFI_STATUS EFIAPI TimerDriverRegisterHandler ( @@ -195,53 +154,30 @@ TimerDriverRegisterHandler ( /** This function adjusts the period of timer interrupts to the value specified - by TimerPeriod. If the timer period is updated, then the selected timer - period is stored in EFI_TIMER.TimerPeriod, and EFI_SUCCESS is returned. If - the timer hardware is not programmable, then EFI_UNSUPPORTED is returned. - If an error occurs while attempting to update the timer period, then the - timer hardware will be put back in its state prior to this call, and - EFI_DEVICE_ERROR is returned. If TimerPeriod is 0, then the timer interrupt - is disabled. This is not the same as disabling the CPU's interrupts. - Instead, it must either turn off the timer hardware, or it must adjust the - interrupt controller so that a CPU interrupt is not generated when the timer - interrupt fires. - - @param This The EFI_TIMER_ARCH_PROTOCOL instance. - @param TimerPeriod The rate to program the timer interrupt in 100 nS units. If - the timer hardware is not programmable, then EFI_UNSUPPORTED is - returned. If the timer is programmable, then the timer period - will be rounded up to the nearest timer period that is supported - by the timer hardware. If TimerPeriod is set to 0, then the - timer interrupts will be disabled. - @retval EFI_SUCCESS The timer period was changed. - @retval EFI_UNSUPPORTED The platform cannot change the period of the timer interrupt. - @retval EFI_DEVICE_ERROR The timer period could not be changed due to a device error. - - **/ EFI_STATUS EFIAPI @@ -286,31 +222,19 @@ TimerDriverSetTimerPeriod ( /** - This function retrieves the period of timer interrupts in 100 ns units, - returns that value in TimerPeriod, and returns EFI_SUCCESS. If TimerPeriod - is NULL, then EFI_INVALID_PARAMETER is returned. If a TimerPeriod of 0 is - returned, then the timer is currently disabled. - - @param This The EFI_TIMER_ARCH_PROTOCOL instance. - @param TimerPeriod A pointer to the timer period to retrieve in 100 ns units. If - 0 is returned, then the timer is currently disabled. - @retval EFI_SUCCESS The timer period was returned in TimerPeriod. - @retval EFI_INVALID_PARAMETER TimerPeriod is NULL. - - **/ EFI_STATUS EFIAPI @@ -328,33 +252,19 @@ TimerDriverGetTimerPeriod ( } /** - This function generates a soft timer interrupt. If the platform does not support soft - timer interrupts, then EFI_UNSUPPORTED is returned. Otherwise, EFI_SUCCESS is returned. - If a handler has been registered through the EFI_TIMER_ARCH_PROTOCOL.RegisterHandler() - service, then a soft timer interrupt will be generated. If the timer interrupt is - enabled when this service is called, then the registered handler will be invoked. The - registered handler should not be able to distinguish a hardware-generated timer - interrupt from a software-generated timer interrupt. - - @param This The EFI_TIMER_ARCH_PROTOCOL instance. - - @retval EFI_SUCCESS The soft timer interrupt was generated. - @retval EFI_UNSUPPORTED The platform does not support the generation of soft timer interrupts. - - **/ EFI_STATUS EFIAPI @@ -388,71 +298,38 @@ TimerDriverRegisterPeriodicCallback ( /** - Interface stucture for the Timer Architectural Protocol. - - @par Protocol Description: - This protocol provides the services to initialize a periodic timer - interrupt, and to register a handler that is called each time the timer - interrupt fires. It may also provide a service to adjust the rate of the - periodic timer interrupt. When a timer interrupt occurs, the handler is - passed the amount of time that has passed since the previous timer - interrupt. - - @param RegisterHandler - Registers a handler that will be called each time the - timer interrupt fires. TimerPeriod defines the minimum - time between timer interrupts, so TimerPeriod will also - be the minimum time between calls to the registered - handler. - - @param SetTimerPeriod - Sets the period of the timer interrupt in 100 nS units. - This function is optional, and may return EFI_UNSUPPORTED. - If this function is supported, then the timer period will - be rounded up to the nearest supported timer period. - @param GetTimerPeriod - Retrieves the period of the timer interrupt in 100 nS units. - - @param GenerateSoftInterrupt - Generates a soft timer interrupt that simulates the firing of - - the timer interrupt. This service can be used to invoke the - - registered handler if the timer interrupt has been masked for - + the timer interrupt. This service can be used to invoke the registered handler if the timer interrupt has been masked for a period of time. - - **/ EFI_TIMER_ARCH_PROTOCOL gTimer = { TimerDriverRegisterHandler, @@ -467,29 +344,17 @@ TIMER_DEBUG_SUPPORT_PROTOCOL gTimerDebugSupport = { /** - Initialize the state information for the Timer Architectural Protocol and - the Timer Debug support protocol that allows the debugger to break into a - running program. - - @param ImageHandle of the loaded driver - @param SystemTable Pointer to the System Table - - @retval EFI_SUCCESS Protocol registered - @retval EFI_OUT_OF_RESOURCES Cannot allocate protocol data structure - @retval EFI_DEVICE_ERROR Hardware problems - - **/ EFI_STATUS EFIAPI -- cgit v1.2.3