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

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10824 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 106 insertions, 25 deletions

diff --git a/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c b/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
index 16dbd4be6e..1ac3853071 100644
--- a/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
+++ b/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c
@@ -203,6 +203,67 @@ GetApicId (
 }

 

 /**

+  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.

 

   This function returns after the IPI has been accepted by the target processor. 

@@ -381,43 +442,22 @@ 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);

 }

 

 /**

@@ -511,6 +551,47 @@ InitializeApicTimer (
 }

 

 /**

+  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.

 **/

 VOID