ppc/xics: remove set_nr_irqs() handler from XICSStateClass

Today, the ICS (Interrupt Controller Source) object is created and
realized by the init and realize routines of the XICS object, but some
of the parameters are only known at the machine level.

These parameters are passed from the sPAPR machine to the ICS object
in a rather convoluted way using property handlers and a class handler
of the XICS object. The number of irqs required to allocate the IRQ
state objects in the ICS realize routine is one of them.

Let's simplify the process by creating the ICS object along with the
XICS object at the machine level and link the ICS into the XICS list
of ICSs at this level also. In the sPAPR machine, there is only a
single ICS but that will change with the PowerNV machine.

Also, QOMify the creation of the objects and get rid of the
superfluous code.

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

1 files changed, 36 insertions, 36 deletions

diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index 372b8311fb..f00b77ae15 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -151,38 +151,6 @@ static void xics_common_reset(DeviceState *d)
     }
 }
 
-static void xics_prop_get_nr_irqs(Object *obj, Visitor *v, const char *name,
-                                  void *opaque, Error **errp)
-{
-    XICSState *xics = XICS_COMMON(obj);
-    int64_t value = xics->nr_irqs;
-
-    visit_type_int(v, name, &value, errp);
-}
-
-static void xics_prop_set_nr_irqs(Object *obj, Visitor *v, const char *name,
-                                  void *opaque, Error **errp)
-{
-    XICSState *xics = XICS_COMMON(obj);
-    XICSStateClass *info = XICS_COMMON_GET_CLASS(xics);
-    Error *error = NULL;
-    int64_t value;
-
-    visit_type_int(v, name, &value, &error);
-    if (error) {
-        error_propagate(errp, error);
-        return;
-    }
-    if (xics->nr_irqs) {
-        error_setg(errp, "Number of interrupts is already set to %u",
-                   xics->nr_irqs);
-        return;
-    }
-
-    assert(info->set_nr_irqs);
-    info->set_nr_irqs(xics, value, errp);
-}
-
 void xics_set_nr_servers(XICSState *xics, uint32_t nr_servers,
                          const char *typename, Error **errp)
 {
@@ -241,9 +209,6 @@ static void xics_common_initfn(Object *obj)
     XICSState *xics = XICS_COMMON(obj);
 
     QLIST_INIT(&xics->ics);
-    object_property_add(obj, "nr_irqs", "int",
-                        xics_prop_get_nr_irqs, xics_prop_set_nr_irqs,
-                        NULL, NULL, NULL);
     object_property_add(obj, "nr_servers", "int",
                         xics_prop_get_nr_servers, xics_prop_set_nr_servers,
                         NULL, NULL, NULL);
@@ -746,12 +711,18 @@ static void ics_simple_realize(DeviceState *dev, Error **errp)
     ics->qirqs = qemu_allocate_irqs(ics_simple_set_irq, ics, ics->nr_irqs);
 }
 
+static Property ics_simple_properties[] = {
+    DEFINE_PROP_UINT32("nr-irqs", ICSState, nr_irqs, 0),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void ics_simple_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     ICSStateClass *isc = ICS_BASE_CLASS(klass);
 
-    dc->realize = ics_simple_realize;
+    isc->realize = ics_simple_realize;
+    dc->props = ics_simple_properties;
     dc->vmsd = &vmstate_ics_simple;
     dc->reset = ics_simple_reset;
     isc->post_load = ics_simple_post_load;
@@ -769,11 +740,40 @@ static const TypeInfo ics_simple_info = {
     .instance_init = ics_simple_initfn,
 };
 
+static void ics_base_realize(DeviceState *dev, Error **errp)
+{
+    ICSStateClass *icsc = ICS_BASE_GET_CLASS(dev);
+    ICSState *ics = ICS_BASE(dev);
+    Object *obj;
+    Error *err = NULL;
+
+    obj = object_property_get_link(OBJECT(dev), "xics", &err);
+    if (!obj) {
+        error_setg(errp, "%s: required link 'xics' not found: %s",
+                   __func__, error_get_pretty(err));
+        return;
+    }
+    ics->xics = XICS_COMMON(obj);
+
+
+    if (icsc->realize) {
+        icsc->realize(dev, errp);
+    }
+}
+
+static void ics_base_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->realize = ics_base_realize;
+}
+
 static const TypeInfo ics_base_info = {
     .name = TYPE_ICS_BASE,
     .parent = TYPE_DEVICE,
     .abstract = true,
     .instance_size = sizeof(ICSState),
+    .class_init = ics_base_class_init,
     .class_size = sizeof(ICSStateClass),
 };