EFI_MM_PERIODIC_TIMER_REGISTER_CONTEXT Struct Reference

#include <MdePkg/Include/Protocol/MmPeriodicTimerDispatch.h>

Data Fields
UINT64	Period
UINT64	MmiTickInterval

Detailed Description

Example: A chipset supports periodic MMIs on every 64ms or 2 seconds. A child wishes schedule a period MMI to fire on a period of 3 seconds, there are several ways to approach the problem:

1. The child may accept a 4 second periodic rate, in which case it registers with Period = 40000 MmiTickInterval = 20000 The resulting MMI will occur every 2 seconds with the child called back on every 2nd MMI. NOTE: the same result would occur if the child set MmiTickInterval = 0.
2. The child may choose the finer granularity MMI (64ms): Period = 30000 MmiTickInterval = 640 The resulting MMI will occur every 64ms with the child called back on every 47th MMI. NOTE: the child driver should be aware that this will result in more MMIs occuring during system runtime which can negatively impact system performance.

Definition at line 44 of file MmPeriodicTimerDispatch.h.

Field Documentation

MmiTickInterval

UINT64 EFI_MM_PERIODIC_TIMER_REGISTER_CONTEXT::MmiTickInterval

The period of time interval between MMIs. Children of this interface should use this field when registering for periodic timer intervals when a finer granularity periodic MMI is desired.

Definition at line 55 of file MmPeriodicTimerDispatch.h.

Period

UINT64 EFI_MM_PERIODIC_TIMER_REGISTER_CONTEXT::Period

The minimum period of time in 100 nanosecond units that the child gets called. The child will be called back after a time greater than the time Period.

Definition at line 49 of file MmPeriodicTimerDispatch.h.

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The documentation for this struct was generated from the following file:

• MdePkg/Include/Protocol/MmPeriodicTimerDispatch.h