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Improve Local APIC library class. Add new library APIs: GetApicVersion(), SendFixedIpi(), SendFixedIpiAllExcludingSelf(), GetApicTimerState(). Remove GetApicTimerDivisor (), its functionality can be covered by GetApicTimerState().

Browse Source 
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10824 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
rsun3
2010-08-26 05:58:42 +00:00
parent 2ca7eca448
commit ae40aef1fb
4 changed files with 284 additions and 65 deletions
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131
UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c
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@@ -285,6 +285,67 @@ GetApicId (
return ApicId;
}
/**
Get the value of the local APIC version register.
@return the value of the local APIC version register.
**/
UINT32
EFIAPI
GetApicVersion (
VOID
)
{
return ReadLocalApicReg (XAPIC_VERSION_OFFSET);
}
/**
Send a Fixed IPI to a specified target processor.
This function returns after the IPI has been accepted by the target processor.
@param ApicId The local APIC ID of the target processor.
@param Vector The vector number of the interrupt being sent.
**/
VOID
EFIAPI
SendFixedIpi (
IN UINT32 ApicId,
IN UINT8 Vector
)
{
LOCAL_APIC_ICR_LOW IcrLow;
IcrLow.Uint32 = 0;
IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_FIXED;
IcrLow.Bits.Level = 1;
IcrLow.Bits.Vector = Vector;
SendIpi (IcrLow.Uint32, ApicId);
}
/**
Send a Fixed IPI to all processors excluding self.
This function returns after the IPI has been accepted by the target processors.
@param Vector The vector number of the interrupt being sent.
**/
VOID
EFIAPI
SendFixedIpiAllExcludingSelf (
IN UINT8 Vector
)
{
LOCAL_APIC_ICR_LOW IcrLow;
IcrLow.Uint32 = 0;
IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_FIXED;
IcrLow.Bits.Level = 1;
IcrLow.Bits.DestinationShorthand = LOCAL_APIC_DESTINATION_SHORTHAND_ALL_EXCLUDING_SELF;
IcrLow.Bits.Vector = Vector;
SendIpi (IcrLow.Uint32, 0);
}
/**
Send a SMI IPI to a specified target processor.
@@ -464,43 +525,22 @@ ProgramVirtualWireMode (
//
// Program the LINT0 vector entry as ExtInt. Not masked, edge, active high.
//
Lint.Uint32 = ReadLocalApicReg (XAPIC_LINT0_VECTOR_OFFSET);
Lint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT0_OFFSET);
Lint.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_EXTINT;
Lint.Bits.InputPinPolarity = 0;
Lint.Bits.TriggerMode = 0;
Lint.Bits.Mask = 0;
WriteLocalApicReg (XAPIC_LINT0_VECTOR_OFFSET, Lint.Uint32);
WriteLocalApicReg (XAPIC_LVT_LINT0_OFFSET, Lint.Uint32);
//
// Program the LINT0 vector entry as NMI. Not masked, edge, active high.
//
Lint.Uint32 = ReadLocalApicReg (XAPIC_LINT1_VECTOR_OFFSET);
Lint.Uint32 = ReadLocalApicReg (XAPIC_LVT_LINT1_OFFSET);
Lint.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_NMI;
Lint.Bits.InputPinPolarity = 0;
Lint.Bits.TriggerMode = 0;
Lint.Bits.Mask = 0;
WriteLocalApicReg (XAPIC_LINT1_VECTOR_OFFSET, Lint.Uint32);
}
/**
Get the divide value from the DCR (Divide Configuration Register) by which
the processor's bus clock is divided to form the time base for the APIC timer.
@return The divide value is one of 1,2,4,8,16,32,64,128.
**/
UINTN
EFIAPI
GetApicTimerDivisor (
VOID
)
{
UINT32 DivideValue;
LOCAL_APIC_DCR Dcr;
Dcr.Uint32 = ReadLocalApicReg (XAPIC_TIMER_DIVIDE_CONFIGURATION_OFFSET);
DivideValue = Dcr.Bits.DivideValue1 | (Dcr.Bits.DivideValue2 << 2);
DivideValue = (DivideValue + 1) & 0x7;
return ((UINTN)1) << DivideValue;
WriteLocalApicReg (XAPIC_LVT_LINT1_OFFSET, Lint.Uint32);
}
/**
@@ -593,6 +633,47 @@ InitializeApicTimer (
WriteLocalApicReg (XAPIC_LVT_TIMER_OFFSET, LvtTimer.Uint32);
}
/**
Get the state of the local APIC timer.
@param DivideValue Return the divide value for the DCR. It is one of 1,2,4,8,16,32,64,128.
@param PeriodicMode Return the timer mode. If TRUE, timer mode is peridoic. Othewise, timer mode is one-shot.
@param Vector Return the timer interrupt vector number.
**/
VOID
EFIAPI
GetApicTimerState (
OUT UINTN *DivideValue OPTIONAL,
OUT BOOLEAN *PeriodicMode OPTIONAL,
OUT UINT8 *Vector OPTIONAL
)
{
UINT32 Divisor;
LOCAL_APIC_DCR Dcr;
LOCAL_APIC_LVT_TIMER LvtTimer;
if (DivideValue != NULL) {
Dcr.Uint32 = ReadLocalApicReg (XAPIC_TIMER_DIVIDE_CONFIGURATION_OFFSET);
Divisor = Dcr.Bits.DivideValue1 | (Dcr.Bits.DivideValue2 << 2);
Divisor = (Divisor + 1) & 0x7;
*DivideValue = ((UINTN)1) << Divisor;
}
if (PeriodicMode != NULL || Vector != NULL) {
LvtTimer.Uint32 = ReadLocalApicReg (XAPIC_LVT_TIMER_OFFSET);
if (PeriodicMode != NULL) {
if (LvtTimer.Bits.TimerMode == 1) {
*PeriodicMode = TRUE;
} else {
*PeriodicMode = FALSE;
}
}
if (Vector != NULL) {
*Vector = (UINT8) LvtTimer.Bits.Vector;
}
}
}
/**
Enable the local APIC timer interrupt.
**/