[Qemu-ppc] [PATCH v2 05/22] ppc/xics: introduce a QOM interface to handle ICSs

[Cédric Le Goater]

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

Signed-off-by: Cédric Le Goater <address@hidden>
---
 hw/intc/xics.c        |  7 +++++++
 include/hw/ppc/xics.h | 18 ++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index b1294417a0ae..3e80d2d0f0d9 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -726,6 +726,12 @@ static const TypeInfo ics_base_info = {
     .class_size = sizeof(ICSStateClass),
 };
 
+static const TypeInfo xics_interface_info = {
+    .name = TYPE_XICS_INTERFACE,
+    .parent = TYPE_INTERFACE,
+    .class_size = sizeof(XICSInterfaceClass),
+};
+
 /*
  * Exported functions
  */
@@ -766,6 +772,7 @@ 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_interface_info);
 }
 
 type_init(xics_register_types)
diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h
index 6d443ce09dba..fe2bb5c8ef54 100644
--- a/include/hw/ppc/xics.h
+++ b/include/hw/ppc/xics.h
@@ -177,6 +177,24 @@ struct ICSIRQState {
     uint8_t flags;
 };
 
+typedef struct XICSInterface {
+    Object parent;
+} XICSInterface;
+
+#define TYPE_XICS_INTERFACE "xics-interface"
+#define XICS_INTERFACE(obj)                                     \
+    OBJECT_CHECK(XICSInterface, (obj), TYPE_XICS_INTERFACE)
+#define XICS_INTERFACE_CLASS(klass)                                     \
+    OBJECT_CLASS_CHECK(XICSInterfaceClass, (klass), TYPE_XICS_INTERFACE)
+#define XICS_INTERFACE_GET_CLASS(obj)                                   \
+    OBJECT_GET_CLASS(XICSInterfaceClass, (obj), TYPE_XICS_INTERFACE)
+
+typedef struct XICSInterfaceClass {
+    InterfaceClass parent;
+    ICSState *(*ics_get)(XICSInterface *xi, int irq);
+    void (*ics_resend)(XICSInterface *xi);
+} XICSInterfaceClass;
+
 #define XICS_IRQS_SPAPR               1024
 
 qemu_irq xics_get_qirq(XICSState *icp, int irq);
-- 
2.7.4