[PATCH v4 01/12] hw/isa/vt82c686: Resolve chip-specific realize methods

[Bernhard Beschow <shentey@gmail.com>]

The object creation now happens in chip-specific init methods which
allows the realize methods to be consolidated into one method. Shifting
the logic into the init methods has the addidional advantage that the
parent object's init methods are called implicitly - like constructors
in object-oriented languages.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
---
 hw/isa/vt82c686.c | 33 ++++++++++++++++++---------------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/hw/isa/vt82c686.c b/hw/isa/vt82c686.c
index 8f656251b8..0217c98fe4 100644
--- a/hw/isa/vt82c686.c
+++ b/hw/isa/vt82c686.c
@@ -544,7 +544,7 @@ struct ViaISAState {
     qemu_irq cpu_intr;
     qemu_irq *isa_irqs;
     ISABus *isa_bus;
-    ViaSuperIOState *via_sio;
+    ViaSuperIOState via_sio;
 };
 
 static const VMStateDescription vmstate_via = {
@@ -602,6 +602,11 @@ static void via_isa_realize(PCIDevice *d, Error **errp)
             d->wmask[i] = 0;
         }
     }
+
+    /* Super I/O */
+    if (!qdev_realize(DEVICE(&s->via_sio), BUS(s->isa_bus), errp)) {
+        return;
+    }
 }
 
 /* TYPE_VT82C686B_ISA */
@@ -615,7 +620,7 @@ static void vt82c686b_write_config(PCIDevice *d, uint32_t addr,
     pci_default_write_config(d, addr, val, len);
     if (addr == 0x85) {
         /* BIT(1): enable or disable superio config io ports */
-        via_superio_io_enable(s->via_sio, val & BIT(1));
+        via_superio_io_enable(&s->via_sio, val & BIT(1));
     }
 }
 
@@ -639,13 +644,11 @@ static void vt82c686b_isa_reset(DeviceState *dev)
     pci_conf[0x77] = 0x10; /* GPIO Control 1/2/3/4 */
 }
 
-static void vt82c686b_realize(PCIDevice *d, Error **errp)
+static void vt82c686b_init(Object *obj)
 {
-    ViaISAState *s = VIA_ISA(d);
+    ViaISAState *s = VIA_ISA(obj);
 
-    via_isa_realize(d, errp);
-    s->via_sio = VIA_SUPERIO(isa_create_simple(s->isa_bus,
-                                               TYPE_VT82C686B_SUPERIO));
+    object_initialize_child(obj, "sio", &s->via_sio, TYPE_VT82C686B_SUPERIO);
 }
 
 static void vt82c686b_class_init(ObjectClass *klass, void *data)
@@ -653,7 +656,7 @@ static void vt82c686b_class_init(ObjectClass *klass, void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 
-    k->realize = vt82c686b_realize;
+    k->realize = via_isa_realize;
     k->config_write = vt82c686b_write_config;
     k->vendor_id = PCI_VENDOR_ID_VIA;
     k->device_id = PCI_DEVICE_ID_VIA_82C686B_ISA;
@@ -670,6 +673,7 @@ static const TypeInfo vt82c686b_isa_info = {
     .name          = TYPE_VT82C686B_ISA,
     .parent        = TYPE_VIA_ISA,
     .instance_size = sizeof(ViaISAState),
+    .instance_init = vt82c686b_init,
     .class_init    = vt82c686b_class_init,
 };
 
@@ -684,7 +688,7 @@ static void vt8231_write_config(PCIDevice *d, uint32_t addr,
     pci_default_write_config(d, addr, val, len);
     if (addr == 0x50) {
         /* BIT(2): enable or disable superio config io ports */
-        via_superio_io_enable(s->via_sio, val & BIT(2));
+        via_superio_io_enable(&s->via_sio, val & BIT(2));
     }
 }
 
@@ -703,13 +707,11 @@ static void vt8231_isa_reset(DeviceState *dev)
     pci_conf[0x6b] = 0x01; /* Fast IR I/O Base */
 }
 
-static void vt8231_realize(PCIDevice *d, Error **errp)
+static void vt8231_init(Object *obj)
 {
-    ViaISAState *s = VIA_ISA(d);
+    ViaISAState *s = VIA_ISA(obj);
 
-    via_isa_realize(d, errp);
-    s->via_sio = VIA_SUPERIO(isa_create_simple(s->isa_bus,
-                                               TYPE_VT8231_SUPERIO));
+    object_initialize_child(obj, "sio", &s->via_sio, TYPE_VT8231_SUPERIO);
 }
 
 static void vt8231_class_init(ObjectClass *klass, void *data)
@@ -717,7 +719,7 @@ static void vt8231_class_init(ObjectClass *klass, void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 
-    k->realize = vt8231_realize;
+    k->realize = via_isa_realize;
     k->config_write = vt8231_write_config;
     k->vendor_id = PCI_VENDOR_ID_VIA;
     k->device_id = PCI_DEVICE_ID_VIA_8231_ISA;
@@ -734,6 +736,7 @@ static const TypeInfo vt8231_isa_info = {
     .name          = TYPE_VT8231_ISA,
     .parent        = TYPE_VIA_ISA,
     .instance_size = sizeof(ViaISAState),
+    .instance_init = vt8231_init,
     .class_init    = vt8231_class_init,
 };
 
-- 
2.37.3