qom: add vga node to the pc composition tree

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

hw/cirrus_vga.c

@@ -2899,7 +2899,7 @@ static void cirrus_init_common(CirrusVGAState * s, int device_id, int is_pci,
  *
  ***************************************/
 
-void isa_cirrus_vga_init(MemoryRegion *system_memory)
+DeviceState *isa_cirrus_vga_init(MemoryRegion *system_memory)
 {
     CirrusVGAState *s;
 
@@ -2913,6 +2913,8 @@ void isa_cirrus_vga_init(MemoryRegion *system_memory)
     vmstate_register(NULL, 0, &vmstate_cirrus_vga, s);
     rom_add_vga(VGABIOS_CIRRUS_FILENAME);
     /* XXX ISA-LFB support */
+    /* FIXME not qdev yet */
+    return NULL;
 }
 
 /***************************************
@@ -2955,9 +2957,9 @@ static int pci_cirrus_vga_initfn(PCIDevice *dev)
      return 0;
 }
 
-void pci_cirrus_vga_init(PCIBus *bus)
+DeviceState *pci_cirrus_vga_init(PCIBus *bus)
 {
-    pci_create_simple(bus, -1, "cirrus-vga");
+    return &pci_create_simple(bus, -1, "cirrus-vga")->qdev;
 }
 
 static PCIDeviceInfo cirrus_vga_info = {

hw/pc.c

@@ -1069,38 +1069,44 @@ qemu_irq *pc_allocate_cpu_irq(void)
     return qemu_allocate_irqs(pic_irq_request, NULL, 1);
 }
 
-void pc_vga_init(PCIBus *pci_bus)
+DeviceState *pc_vga_init(PCIBus *pci_bus)
 {
+    DeviceState *dev = NULL;
+
     if (cirrus_vga_enabled) {
         if (pci_bus) {
-            pci_cirrus_vga_init(pci_bus);
+            dev = pci_cirrus_vga_init(pci_bus);
         } else {
-            isa_cirrus_vga_init(get_system_memory());
+            dev = isa_cirrus_vga_init(get_system_memory());
         }
     } else if (vmsvga_enabled) {
         if (pci_bus) {
-            if (!pci_vmsvga_init(pci_bus)) {
+            dev = pci_vmsvga_init(pci_bus);
+            if (!dev) {
                 fprintf(stderr, "Warning: vmware_vga not available,"
                         " using standard VGA instead\n");
-                pci_vga_init(pci_bus);
+                dev = pci_vga_init(pci_bus);
             }
         } else {
             fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
         }
 #ifdef CONFIG_SPICE
     } else if (qxl_enabled) {
-        if (pci_bus)
-            pci_create_simple(pci_bus, -1, "qxl-vga");
-        else
+        if (pci_bus) {
+            dev = &pci_create_simple(pci_bus, -1, "qxl-vga")->qdev;
+        } else {
             fprintf(stderr, "%s: qxl: no PCI bus\n", __FUNCTION__);
+        }
 #endif
     } else if (std_vga_enabled) {
         if (pci_bus) {
-            pci_vga_init(pci_bus);
+            dev = pci_vga_init(pci_bus);
         } else {
-            isa_vga_init();
+            dev = isa_vga_init();
         }
     }
+
+    return dev;
 }
 
 static void cpu_request_exit(void *opaque, int irq, int level)

hw/pc.h

@@ -140,7 +140,7 @@ void pc_memory_init(MemoryRegion *system_memory,
                     MemoryRegion *rom_memory,
                     MemoryRegion **ram_memory);
 qemu_irq *pc_allocate_cpu_irq(void);
-void pc_vga_init(PCIBus *pci_bus);
+DeviceState *pc_vga_init(PCIBus *pci_bus);
 void pc_basic_device_init(qemu_irq *gsi,
                           ISADevice **rtc_state,
                           ISADevice **floppy,
@@ -205,27 +205,27 @@ enum vga_retrace_method {
 
 extern enum vga_retrace_method vga_retrace_method;
 
-static inline int isa_vga_init(void)
+static inline DeviceState *isa_vga_init(void)
 {
     ISADevice *dev;
 
     dev = isa_try_create("isa-vga");
     if (!dev) {
         fprintf(stderr, "Warning: isa-vga not available\n");
-        return 0;
+        return NULL;
     }
     qdev_init_nofail(&dev->qdev);
-    return 1;
+    return &dev->qdev;
 }
 
-int pci_vga_init(PCIBus *bus);
+DeviceState *pci_vga_init(PCIBus *bus);
 int isa_vga_mm_init(target_phys_addr_t vram_base,
                     target_phys_addr_t ctrl_base, int it_shift,
                     MemoryRegion *address_space);
 
 /* cirrus_vga.c */
-void pci_cirrus_vga_init(PCIBus *bus);
-void isa_cirrus_vga_init(MemoryRegion *address_space);
+DeviceState *pci_cirrus_vga_init(PCIBus *bus);
+DeviceState *isa_cirrus_vga_init(MemoryRegion *address_space);
 
 /* ne2000.c */
 static inline bool isa_ne2000_init(int base, int irq, NICInfo *nd)

hw/pc_piix.c

@@ -99,6 +99,7 @@ static void pc_init1(MemoryRegion *system_memory,
     MemoryRegion *ram_memory;
     MemoryRegion *pci_memory;
     MemoryRegion *rom_memory;
+    DeviceState *dev;
 
     pc_cpus_init(cpu_model);
 
@@ -168,7 +169,10 @@ static void pc_init1(MemoryRegion *system_memory,
 
     pc_register_ferr_irq(gsi[13]);
 
-    pc_vga_init(pci_enabled? pci_bus: NULL);
+    dev = pc_vga_init(pci_enabled? pci_bus: NULL);
+    if (dev) {
+        qdev_property_add_child(qdev_get_root(), "vga", dev, NULL);
+    }
 
     if (xen_enabled()) {
         pci_create_simple(pci_bus, -1, "xen-platform");

hw/vga-pci.c

@@ -70,10 +70,9 @@ static int pci_vga_initfn(PCIDevice *dev)
      return 0;
 }
 
-int pci_vga_init(PCIBus *bus)
+DeviceState *pci_vga_init(PCIBus *bus)
 {
-    pci_create_simple(bus, -1, "VGA");
-    return 0;
+    return &pci_create_simple(bus, -1, "VGA")->qdev;
 }
 
 static PCIDeviceInfo vga_info = {

hw/vmware_vga.h

@@ -4,15 +4,15 @@
 #include "qemu-common.h"
 
 /* vmware_vga.c */
-static inline bool pci_vmsvga_init(PCIBus *bus)
+static inline DeviceState *pci_vmsvga_init(PCIBus *bus)
 {
     PCIDevice *dev;
 
     dev = pci_try_create(bus, -1, "vmware-svga");
     if (!dev || qdev_init(&dev->qdev) < 0) {
-        return false;
+        return NULL;
     } else {
-        return true;
+        return &dev->qdev;
     }
 }