i8259: Convert PICCommonState to use QOM realizefn

Instead of having the parent provide PICCommonClass::init,
let the children override DeviceClass::realize themselves.
This pushes the responsibility of saving and calling the parent's
realizefn to the children.

Signed-off-by: Andreas Färber <afaerber@suse.de>

2 files changed, 21 insertions, 7 deletions

diff --git a/hw/intc/i8259.c b/hw/intc/i8259.c
index 1b513ff..192a0ba 100644
--- a/hw/intc/i8259.c
+++ b/hw/intc/i8259.c
@@ -42,6 +42,18 @@
 //#define DEBUG_IRQ_COUNT
 
 #define TYPE_I8259 "isa-i8259"
+#define PIC_CLASS(class) OBJECT_CLASS_CHECK(PICClass, (class), TYPE_I8259)
+#define PIC_GET_CLASS(obj) OBJECT_GET_CLASS(PICClass, (obj), TYPE_I8259)
+
+/**
+ * PICClass:
+ * @parent_realize: The parent's realizefn.
+ */
+typedef struct PICClass {
+    PICCommonClass parent_class;
+
+    DeviceRealize parent_realize;
+} PICClass;
 
 #if defined(DEBUG_PIC) || defined(DEBUG_IRQ_COUNT)
 static int irq_level[16];
@@ -400,15 +412,18 @@ static const MemoryRegionOps pic_elcr_ioport_ops = {
     },
 };
 
-static void pic_init(PICCommonState *s)
+static void pic_realize(DeviceState *dev, Error **err)
 {
-    DeviceState *dev = DEVICE(s);
+    PICCommonState *s = PIC_COMMON(dev);
+    PICClass *pc = PIC_GET_CLASS(dev);
 
     memory_region_init_io(&s->base_io, &pic_base_ioport_ops, s, "pic", 2);
     memory_region_init_io(&s->elcr_io, &pic_elcr_ioport_ops, s, "elcr", 1);
 
     qdev_init_gpio_out(dev, s->int_out, ARRAY_SIZE(s->int_out));
     qdev_init_gpio_in(dev, pic_set_irq, 8);
+
+    pc->parent_realize(dev, err);
 }
 
 void pic_info(Monitor *mon, const QDict *qdict)
@@ -481,10 +496,11 @@ qemu_irq *i8259_init(ISABus *bus, qemu_irq parent_irq)
 
 static void i8259_class_init(ObjectClass *klass, void *data)
 {
-    PICCommonClass *k = PIC_COMMON_CLASS(klass);
+    PICClass *k = PIC_CLASS(klass);
     DeviceClass *dc = DEVICE_CLASS(klass);
 
-    k->init = pic_init;
+    k->parent_realize = dc->realize;
+    dc->realize = pic_realize;
     dc->reset = pic_reset;
 }
 
@@ -493,6 +509,7 @@ static const TypeInfo i8259_info = {
     .instance_size = sizeof(PICCommonState),
     .parent     = TYPE_PIC_COMMON,
     .class_init = i8259_class_init,
+    .class_size = sizeof(PICClass),
 };
 
 static void pic_register_types(void)
diff --git a/hw/intc/i8259_common.c b/hw/intc/i8259_common.c
index a3dee38..7613547 100644
--- a/hw/intc/i8259_common.c
+++ b/hw/intc/i8259_common.c
@@ -69,9 +69,6 @@ static int pic_dispatch_post_load(void *opaque, int version_id)
 static void pic_common_realize(DeviceState *dev, Error **errp)
 {
     PICCommonState *s = PIC_COMMON(dev);
-    PICCommonClass *info = PIC_COMMON_GET_CLASS(s);
-
-    info->init(s);
 
     isa_register_ioport(NULL, &s->base_io, s->iobase);
     if (s->elcr_addr != -1) {