drm/radeon/cik: log and handle VM page fault interrupts

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/cikd.h b/drivers/gpu/drm/radeon/cikd.h
index a282168..cc4f28e 100644
--- a/drivers/gpu/drm/radeon/cikd.h
+++ b/drivers/gpu/drm/radeon/cikd.h
@@ -95,6 +95,10 @@
 #define VM_INVALIDATE_REQUEST				0x1478
 #define VM_INVALIDATE_RESPONSE				0x147c
 
+#define	VM_CONTEXT1_PROTECTION_FAULT_STATUS		0x14DC
+
+#define	VM_CONTEXT1_PROTECTION_FAULT_ADDR		0x14FC
+
 #define VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR	0x1518
 #define VM_CONTEXT1_PROTECTION_FAULT_DEFAULT_ADDR	0x151c