diff --git a/hw/sh4/r2d.c b/hw/sh4/r2d.c
index 5e22ed7..b1bfad9 100644
--- a/hw/sh4/r2d.c
+++ b/hw/sh4/r2d.c
@@ -57,7 +57,13 @@
 #define PA_VERREG	0x32
 #define PA_OUTPORT	0x36
 
+#define TYPE_R2D_FPGA "r2d_fpga"
+#define R2D_FPGA(obj) \
+    OBJECT_CHECK(r2d_fpga_t, (obj), TYPE_R2D_FPGA)
+
 typedef struct {
+    SysBusDevice parent;
+
     uint16_t bcr;
     uint16_t irlmsk;
     uint16_t irlmon;
@@ -177,18 +183,61 @@ static const MemoryRegionOps r2d_fpga_ops = {
     .endianness = DEVICE_NATIVE_ENDIAN,
 };
 
-static qemu_irq *r2d_fpga_init(MemoryRegion *sysmem,
-                               hwaddr base, qemu_irq irl)
+static void r2d_fpga_initfn(Object *obj)
 {
-    r2d_fpga_t *s;
+    DeviceState *dev = DEVICE(obj);
+    r2d_fpga_t *s = R2D_FPGA(obj);
+    SysBusDevice *sysbus = SYS_BUS_DEVICE(obj);
 
-    s = g_malloc0(sizeof(r2d_fpga_t));
+    qdev_init_gpio_in(dev, r2d_fpga_irq_set, NR_IRQS);
+    sysbus_init_irq(sysbus, &s->irl);
+    sysbus_init_mmio(sysbus, &s->iomem);
+}
 
-    s->irl = irl;
+static void r2d_fpga_realize(DeviceState *dev, Error **errp)
+{
+    r2d_fpga_t *s = R2D_FPGA(dev);
 
     memory_region_init_io(&s->iomem, NULL, &r2d_fpga_ops, s, "r2d-fpga", 0x40);
-    memory_region_add_subregion(sysmem, base, &s->iomem);
-    return qemu_allocate_irqs(r2d_fpga_irq_set, s, NR_IRQS);
+}
+
+static void r2d_fpga_class_init(ObjectClass *klass, void *class_data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->realize = r2d_fpga_realize;
+}
+
+static const TypeInfo r2d_fpga_info = {
+    .name = TYPE_R2D_FPGA,
+    .parent = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(r2d_fpga_t),
+    .instance_init = r2d_fpga_initfn,
+    .class_init = r2d_fpga_class_init,
+};
+
+static void r2d_fpga_register_types(void)
+{
+    type_register_static(&r2d_fpga_info);
+}
+
+type_init(r2d_fpga_register_types);
+
+static DeviceState *r2d_fpga_init(MemoryRegion *sysmem,
+                                  hwaddr base, qemu_irq irl)
+{
+    DeviceState *dev;
+    SysBusDevice *sysbus;
+
+    dev = qdev_create(NULL, TYPE_R2D_FPGA);
+    qdev_init_nofail(dev);
+
+    sysbus = SYS_BUS_DEVICE(dev);
+    sysbus_connect_irq(sysbus, 0, irl);
+    memory_region_add_subregion(sysmem, base,
+                                sysbus_mmio_get_region(sysbus, 0));
+
+    return dev;
 }
 
 typedef struct ResetData {
@@ -230,10 +279,9 @@ static void r2d_init(MachineState *machine)
     ResetData *reset_info;
     struct SH7750State *s;
     MemoryRegion *sdram = g_new(MemoryRegion, 1);
-    qemu_irq *irq;
     DriveInfo *dinfo;
     int i;
-    DeviceState *dev;
+    DeviceState *dev, *r2d_fpga;
     SysBusDevice *busdev;
     MemoryRegion *address_space_mem = get_system_memory();
     PCIBus *pci_bus;
@@ -260,7 +308,7 @@ static void r2d_init(MachineState *machine)
     memory_region_add_subregion(address_space_mem, SDRAM_BASE, sdram);
     /* Register peripherals */
     s = sh7750_init(cpu, address_space_mem);
-    irq = r2d_fpga_init(address_space_mem, 0x04000000, sh7750_irl(s));
+    r2d_fpga = r2d_fpga_init(address_space_mem, 0x04000000, sh7750_irl(s));
 
     dev = qdev_create(NULL, "sh_pci");
     busdev = SYS_BUS_DEVICE(dev);
@@ -268,19 +316,19 @@ static void r2d_init(MachineState *machine)
     pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci"));
     sysbus_mmio_map(busdev, 0, P4ADDR(0x1e200000));
     sysbus_mmio_map(busdev, 1, A7ADDR(0x1e200000));
-    sysbus_connect_irq(busdev, 0, irq[PCI_INTA]);
-    sysbus_connect_irq(busdev, 1, irq[PCI_INTB]);
-    sysbus_connect_irq(busdev, 2, irq[PCI_INTC]);
-    sysbus_connect_irq(busdev, 3, irq[PCI_INTD]);
+    sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(r2d_fpga, PCI_INTA));
+    sysbus_connect_irq(busdev, 1, qdev_get_gpio_in(r2d_fpga, PCI_INTB));
+    sysbus_connect_irq(busdev, 2, qdev_get_gpio_in(r2d_fpga, PCI_INTC));
+    sysbus_connect_irq(busdev, 3, qdev_get_gpio_in(r2d_fpga, PCI_INTD));
 
     sm501_init(address_space_mem, 0x10000000, SM501_VRAM_SIZE,
-               irq[SM501], serial_hds[2]);
+               qdev_get_gpio_in(r2d_fpga, SM501), serial_hds[2]);
 
     /* onboard CF (True IDE mode, Master only). */
     dinfo = drive_get(IF_IDE, 0, 0);
     dev = qdev_create(NULL, "mmio-ide");
     busdev = SYS_BUS_DEVICE(dev);
-    sysbus_connect_irq(busdev, 0, irq[CF_IDE]);
+    sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(r2d_fpga, CF_IDE));
     qdev_prop_set_uint32(dev, "shift", 1);
     qdev_init_nofail(dev);
     sysbus_mmio_map(busdev, 0, 0x14001000);
