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authorKumar Gala <galak@kernel.crashing.org>2009-02-12 13:54:53 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-02-23 15:53:03 +1100
commit620165f971753c2c451c880796bac7cd66f3534a (patch)
tree1ec36dc067ff0af865f4f6954dbea84ef4205294 /arch/powerpc/kernel/head_fsl_booke.S
parent6ed8d12849d651c646c108807754a544d2e506f1 (diff)
powerpc: Add support for using doorbells for SMP IPI
The e500mc supports the new msgsnd/doorbell mechanisms that were added in the Power ISA 2.05 architecture. We use the normal level doorbell for doing SMP IPIs at this point. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/head_fsl_booke.S')
-rw-r--r--arch/powerpc/kernel/head_fsl_booke.S6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 4ea6e1a7e4b9..4c22620d009b 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -698,7 +698,9 @@ interrupt_base:
/* Performance Monitor */
EXCEPTION(0x2060, PerformanceMonitor, performance_monitor_exception, EXC_XFER_STD)
- EXCEPTION(0x2070, Doorbell, unknown_exception, EXC_XFER_STD)
+ EXCEPTION(0x2070, Doorbell, doorbell_exception, EXC_XFER_STD)
+
+ CRITICAL_EXCEPTION(0x2080, CriticalDoorbell, unknown_exception)
/* Debug Interrupt */
DEBUG_DEBUG_EXCEPTION
@@ -921,6 +923,8 @@ _GLOBAL(__setup_e500mc_ivors)
mtspr SPRN_IVOR35,r3
li r3,Doorbell@l
mtspr SPRN_IVOR36,r3
+ li r3,CriticalDoorbell@l
+ mtspr SPRN_IVOR37,r3
sync
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