net/pcnet-pci: QOM Upcast Sweep

Define and use standard QOM cast macro. Remove usages of DO_UPCAST()
and direct -> style upcasting.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
[AF: Renamed parent field, renamed from PC_NET to PCNET]
Signed-off-by: Andreas Färber <afaerber@suse.de>

hw/net/pcnet-pci.c

@@ -43,9 +43,16 @@
 //#define PCNET_DEBUG_TMD
 //#define PCNET_DEBUG_MATCH
 
+#define TYPE_PCI_PCNET "pcnet"
+
+#define PCI_PCNET(obj) \
+     OBJECT_CHECK(PCIPCNetState, (obj), TYPE_PCI_PCNET)
 
 typedef struct {
-    PCIDevice pci_dev;
+    /*< private >*/
+    PCIDevice parent_obj;
+    /*< public >*/
+
     PCNetState state;
     MemoryRegion io_bar;
 } PCIPCNetState;
@@ -236,7 +243,7 @@ static const VMStateDescription vmstate_pci_pcnet = {
     .minimum_version_id = 2,
     .minimum_version_id_old = 2,
     .fields      = (VMStateField []) {
-        VMSTATE_PCI_DEVICE(pci_dev, PCIPCNetState),
+        VMSTATE_PCI_DEVICE(parent_obj, PCIPCNetState),
         VMSTATE_STRUCT(state, PCIPCNetState, 0, vmstate_pcnet, PCNetState),
         VMSTATE_END_OF_LIST()
     }
@@ -273,7 +280,7 @@ static void pci_pcnet_cleanup(NetClientState *nc)
 
 static void pci_pcnet_uninit(PCIDevice *dev)
 {
-    PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev, dev);
+    PCIPCNetState *d = PCI_PCNET(dev);
 
     memory_region_destroy(&d->state.mmio);
     memory_region_destroy(&d->io_bar);
@@ -293,7 +300,7 @@ static NetClientInfo net_pci_pcnet_info = {
 
 static int pci_pcnet_init(PCIDevice *pci_dev)
 {
-    PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev, pci_dev);
+    PCIPCNetState *d = PCI_PCNET(pci_dev);
     PCNetState *s = &d->state;
     uint8_t *pci_conf;
 
@@ -329,12 +336,12 @@ static int pci_pcnet_init(PCIDevice *pci_dev)
     s->phys_mem_write = pci_physical_memory_write;
     s->dma_opaque = pci_dev;
 
-    return pcnet_common_init(&pci_dev->qdev, s, &net_pci_pcnet_info);
+    return pcnet_common_init(DEVICE(pci_dev), s, &net_pci_pcnet_info);
 }
 
 static void pci_reset(DeviceState *dev)
 {
-    PCIPCNetState *d = DO_UPCAST(PCIPCNetState, pci_dev.qdev, dev);
+    PCIPCNetState *d = PCI_PCNET(dev);
 
     pcnet_h_reset(&d->state);
 }
@@ -362,7 +369,7 @@ static void pcnet_class_init(ObjectClass *klass, void *data)
 }
 
 static const TypeInfo pcnet_info = {
-    .name          = "pcnet",
+    .name          = TYPE_PCI_PCNET,
     .parent        = TYPE_PCI_DEVICE,
     .instance_size = sizeof(PCIPCNetState),
     .class_init    = pcnet_class_init,