ppc/xics: introduce a XICSFabric QOM interface to handle ICSs

This interface provides two simple handlers. One is to get an ICS
(Interrupt Source Controller) object from an irq number and a second
to resend the irqs when needed.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 18 insertions, 0 deletions

diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h
index 37d4d9ce3f..1c43305a04 100644
--- a/include/hw/ppc/xics.h
+++ b/include/hw/ppc/xics.h
@@ -178,6 +178,24 @@ struct ICSIRQState {
     uint8_t flags;
 };
 
+typedef struct XICSFabric {
+    Object parent;
+} XICSFabric;
+
+#define TYPE_XICS_FABRIC "xics-fabric"
+#define XICS_FABRIC(obj)                                     \
+    OBJECT_CHECK(XICSFabric, (obj), TYPE_XICS_FABRIC)
+#define XICS_FABRIC_CLASS(klass)                                     \
+    OBJECT_CLASS_CHECK(XICSFabricClass, (klass), TYPE_XICS_FABRIC)
+#define XICS_FABRIC_GET_CLASS(obj)                                   \
+    OBJECT_GET_CLASS(XICSFabricClass, (obj), TYPE_XICS_FABRIC)
+
+typedef struct XICSFabricClass {
+    InterfaceClass parent;
+    ICSState *(*ics_get)(XICSFabric *xi, int irq);
+    void (*ics_resend)(XICSFabric *xi);
+} XICSFabricClass;
+
 #define XICS_IRQS_SPAPR               1024
 
 qemu_irq xics_get_qirq(XICSState *icp, int irq);