ArmPkg/ArmGic: Returned the InterruptId in ArmGicAcknowledgeInterrupt()

The InterruptId has a different width for GicV2 and GicV3 (respectively
10bit and 24bit).
The function prototype has been changed to return this value to make the
caller GIC architecture version independent. Otherwise, we would have need
to expose a different mask to allow the caller to retrieve this value from
the read register.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15628 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 6 insertions, 5 deletions

diff --git a/ArmPlatformPkg/PrePi/MainMPCore.c b/ArmPlatformPkg/PrePi/MainMPCore.c
index 3db3ce6857..bf813730d3 100644
--- a/ArmPlatformPkg/PrePi/MainMPCore.c
+++ b/ArmPlatformPkg/PrePi/MainMPCore.c
@@ -1,6 +1,6 @@
 /** @file

 *

-*  Copyright (c) 2011-2012, ARM Limited. All rights reserved.

+*  Copyright (c) 2011-2014, ARM Limited. All rights reserved.

 *

 *  This program and the accompanying materials

 *  are licensed and made available under the terms and conditions of the BSD License

@@ -55,7 +55,8 @@ SecondaryMain (
   UINT32                  CoreId;

   VOID                    (*SecondaryStart)(VOID);

   UINTN                   SecondaryEntryAddr;

-  UINTN                   Interrupt;

+  UINTN                   AcknowledgeInterrupt;

+  UINTN                   InterruptId;

 

   ClusterId = GET_CLUSTER_ID(MpId);

   CoreId    = GET_CORE_ID(MpId);

@@ -88,11 +89,11 @@ SecondaryMain (
     SecondaryEntryAddr = MmioRead32 (ArmCoreInfoTable[Index].MailboxGetAddress);

 

     // Acknowledge the interrupt and send End of Interrupt signal.

-    Interrupt = ArmGicAcknowledgeInterrupt (PcdGet32 (PcdGicInterruptInterfaceBase));

+    AcknowledgeInterrupt = ArmGicAcknowledgeInterrupt (PcdGet32 (PcdGicInterruptInterfaceBase), &InterruptId);

     // Check if it is a valid interrupt ID

-    if ((Interrupt & ARM_GIC_ICCIAR_ACKINTID) < ArmGicGetMaxNumInterrupts (PcdGet32 (PcdGicDistributorBase))) {

+    if (InterruptId < ArmGicGetMaxNumInterrupts (PcdGet32 (PcdGicDistributorBase))) {

       // Got a valid SGI number hence signal End of Interrupt

-      ArmGicEndOfInterrupt (PcdGet32 (PcdGicInterruptInterfaceBase), Interrupt);

+      ArmGicEndOfInterrupt (PcdGet32 (PcdGicInterruptInterfaceBase), AcknowledgeInterrupt);

     }

   } while (SecondaryEntryAddr == 0);