diff --git a/hw/realview.c b/hw/realview.c
index 549bb15..11ffb8a 100644
--- a/hw/realview.c
+++ b/hw/realview.c
@@ -272,8 +272,16 @@ static void realview_init(ram_addr_t ram_size,
     sysbus_create_simple("pl031", 0x10017000, pic[10]);
 
     if (!is_pb) {
-        dev = sysbus_create_varargs("realview_pci", 0x60000000,
-                                    pic[48], pic[49], pic[50], pic[51], NULL);
+        dev = qdev_create(NULL, "realview_pci");
+        busdev = sysbus_from_qdev(dev);
+        qdev_init_nofail(dev);
+        sysbus_mmio_map(busdev, 0, 0x61000000); /* PCI self-config */
+        sysbus_mmio_map(busdev, 1, 0x62000000); /* PCI config */
+        sysbus_mmio_map(busdev, 2, 0x63000000); /* PCI I/O */
+        sysbus_connect_irq(busdev, 0, pic[48]);
+        sysbus_connect_irq(busdev, 1, pic[49]);
+        sysbus_connect_irq(busdev, 2, pic[50]);
+        sysbus_connect_irq(busdev, 3, pic[51]);
         pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
         if (usb_enabled) {
             usb_ohci_init_pci(pci_bus, -1);
diff --git a/hw/versatile_pci.c b/hw/versatile_pci.c
index 98e56f1..8a88696 100644
--- a/hw/versatile_pci.c
+++ b/hw/versatile_pci.c
@@ -58,38 +58,6 @@ static void pci_vpb_set_irq(void *opaque, int irq_num, int level)
     qemu_set_irq(pic[irq_num], level);
 }
 
-
-static void pci_vpb_map(SysBusDevice *dev, target_phys_addr_t base)
-{
-    PCIVPBState *s = (PCIVPBState *)dev;
-    /* Selfconfig area.  */
-    memory_region_add_subregion(get_system_memory(), base + 0x01000000,
-                                &s->mem_config);
-    /* Normal config area.  */
-    memory_region_add_subregion(get_system_memory(), base + 0x02000000,
-                                &s->mem_config2);
-
-    if (s->realview) {
-        /* IO memory area.  */
-        memory_region_add_subregion(get_system_memory(), base + 0x03000000,
-                                    &s->isa);
-    }
-}
-
-static void pci_vpb_unmap(SysBusDevice *dev, target_phys_addr_t base)
-{
-    PCIVPBState *s = (PCIVPBState *)dev;
-    /* Selfconfig area.  */
-    memory_region_del_subregion(get_system_memory(), &s->mem_config);
-    /* Normal config area.  */
-    memory_region_del_subregion(get_system_memory(), &s->mem_config2);
-
-    if (s->realview) {
-        /* IO memory area.  */
-        memory_region_del_subregion(get_system_memory(), &s->isa);
-    }
-}
-
 static int pci_vpb_init(SysBusDevice *dev)
 {
     PCIVPBState *s = FROM_SYSBUS(PCIVPBState, dev);
@@ -106,16 +74,22 @@ static int pci_vpb_init(SysBusDevice *dev)
 
     /* ??? Register memory space.  */
 
+    /* Our memory regions are:
+     * 0 : PCI self config window
+     * 1 : PCI config window
+     * 2 : PCI IO window (realview_pci only)
+     */
     memory_region_init_io(&s->mem_config, &pci_vpb_config_ops, bus,
                           "pci-vpb-selfconfig", 0x1000000);
+    sysbus_init_mmio_region(dev, &s->mem_config);
     memory_region_init_io(&s->mem_config2, &pci_vpb_config_ops, bus,
                           "pci-vpb-config", 0x1000000);
+    sysbus_init_mmio_region(dev, &s->mem_config2);
     if (s->realview) {
         isa_mmio_setup(&s->isa, 0x0100000);
+        sysbus_init_mmio_region(dev, &s->isa);
     }
 
-    sysbus_init_mmio_cb2(dev, pci_vpb_map, pci_vpb_unmap);
-
     pci_create_simple(bus, -1, "versatile_pci_host");
     return 0;
 }
diff --git a/hw/versatilepb.c b/hw/versatilepb.c
index 49f8f5f..68402cc 100644
--- a/hw/versatilepb.c
+++ b/hw/versatilepb.c
@@ -181,6 +181,7 @@ static void versatile_init(ram_addr_t ram_size,
     qemu_irq pic[32];
     qemu_irq sic[32];
     DeviceState *dev, *sysctl;
+    SysBusDevice *busdev;
     PCIBus *pci_bus;
     NICInfo *nd;
     int n;
@@ -219,8 +220,15 @@ static void versatile_init(ram_addr_t ram_size,
     sysbus_create_simple("pl050_keyboard", 0x10006000, sic[3]);
     sysbus_create_simple("pl050_mouse", 0x10007000, sic[4]);
 
-    dev = sysbus_create_varargs("versatile_pci", 0x40000000,
-                                sic[27], sic[28], sic[29], sic[30], NULL);
+    dev = qdev_create(NULL, "versatile_pci");
+    busdev = sysbus_from_qdev(dev);
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(busdev, 0, 0x41000000); /* PCI self-config */
+    sysbus_mmio_map(busdev, 1, 0x42000000); /* PCI config */
+    sysbus_connect_irq(busdev, 0, sic[27]);
+    sysbus_connect_irq(busdev, 1, sic[28]);
+    sysbus_connect_irq(busdev, 2, sic[29]);
+    sysbus_connect_irq(busdev, 3, sic[30]);
     pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
 
     /* The Versatile PCI bridge does not provide access to PCI IO space,
