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>

2 files changed, 25 insertions, 0 deletions

diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index c7c9bd6007..433869a696 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -745,6 +745,12 @@ static const TypeInfo ics_base_info = {
     .class_size = sizeof(ICSStateClass),
 };
 
+static const TypeInfo xics_fabric_info = {
+    .name = TYPE_XICS_FABRIC,
+    .parent = TYPE_INTERFACE,
+    .class_size = sizeof(XICSFabricClass),
+};
+
 /*
  * Exported functions
  */
@@ -785,6 +791,7 @@ static void xics_register_types(void)
     type_register_static(&ics_simple_info);
     type_register_static(&ics_base_info);
     type_register_static(&icp_info);
+    type_register_static(&xics_fabric_info);
 }
 
 type_init(xics_register_types)
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);