[RFC,v3,49/56] uhci: convert to memory API

diff --git a/hw/usb-uhci.c b/hw/usb-uhci.c
index 405fa7b..95ef260 100644
--- a/hw/usb-uhci.c
+++ b/hw/usb-uhci.c
@@ -132,6 +132,7 @@  typedef struct UHCIPort {
 
 struct UHCIState {
     PCIDevice dev;
+    MemoryRegion io_bar;
     USBBus bus;
     uint16_t cmd; /* cmd register */
     uint16_t status;
@@ -1083,19 +1084,38 @@  static void uhci_frame_timer(void *opaque)
     qemu_mod_timer(s->frame_timer, s->expire_time);
 }
 
-static void uhci_map(PCIDevice *pci_dev, int region_num,
-                    pcibus_t addr, pcibus_t size, int type)
+static uint64_t uhci_ioport_read(void *opaque, target_phys_addr_t addr,
+                                 unsigned size)
 {
-    UHCIState *s = (UHCIState *)pci_dev;
-
-    register_ioport_write(addr, 32, 2, uhci_ioport_writew, s);
-    register_ioport_read(addr, 32, 2, uhci_ioport_readw, s);
-    register_ioport_write(addr, 32, 4, uhci_ioport_writel, s);
-    register_ioport_read(addr, 32, 4, uhci_ioport_readl, s);
-    register_ioport_write(addr, 32, 1, uhci_ioport_writeb, s);
-    register_ioport_read(addr, 32, 1, uhci_ioport_readb, s);
+    UHCIState *s = opaque;
+
+    switch (size) {
+    case 1: return uhci_ioport_readb(s, addr);
+    case 2: return uhci_ioport_readw(s, addr);
+    case 4: return uhci_ioport_readl(s, addr);
+    default: abort();
+    }
+}
+
+static void uhci_ioport_write(void *opaque, target_phys_addr_t addr,
+                              uint64_t data, unsigned size)
+{
+    UHCIState *s = opaque;
+
+    switch (size) {
+    case 1: return uhci_ioport_writeb(s, addr, data);
+    case 2: return uhci_ioport_writew(s, addr, data);
+    case 4: return uhci_ioport_writel(s, addr, data);
+    default: abort();
+    }
 }
 
+static MemoryRegionOps uhci_ioport_ops = {
+    .read = uhci_ioport_read,
+    .write = uhci_ioport_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
 static void uhci_device_destroy(USBBus *bus, USBDevice *dev)
 {
     UHCIState *s = container_of(bus, UHCIState, bus);
@@ -1137,10 +1157,11 @@  static int usb_uhci_common_initfn(PCIDevice *dev)
 
     qemu_register_reset(uhci_reset, s);
 
+    memory_region_init_io(&s->io_bar, &uhci_ioport_ops, s, "uhci", 0x20);
     /* Use region 4 for consistency with real hardware.  BSD guests seem
        to rely on this.  */
-    pci_register_bar(&s->dev, 4, 0x20,
-                           PCI_BASE_ADDRESS_SPACE_IO, uhci_map);
+    pci_register_bar_region(&s->dev, 4,
+                            PCI_BASE_ADDRESS_SPACE_IO, &s->io_bar);
 
     return 0;
 }
@@ -1160,12 +1181,22 @@  static int usb_uhci_vt82c686b_initfn(PCIDevice *dev)
     return usb_uhci_common_initfn(dev);
 }
 
+static int usb_uhci_exit(PCIDevice *dev)
+{
+    UHCIState *s = DO_UPCAST(UHCIState, dev, dev);
+
+    memory_region_destroy(&s->io_bar);
+    return 0;
+}
+
+
 static PCIDeviceInfo uhci_info[] = {
     {
         .qdev.name    = "piix3-usb-uhci",
         .qdev.size    = sizeof(UHCIState),
         .qdev.vmsd    = &vmstate_uhci,
         .init         = usb_uhci_common_initfn,
+        .exit         = usb_uhci_exit,
         .vendor_id    = PCI_VENDOR_ID_INTEL,
         .device_id    = PCI_DEVICE_ID_INTEL_82371SB_2,
         .revision     = 0x01,
@@ -1175,6 +1206,7 @@  static PCIDeviceInfo uhci_info[] = {
         .qdev.size    = sizeof(UHCIState),
         .qdev.vmsd    = &vmstate_uhci,
         .init         = usb_uhci_common_initfn,
+        .exit         = usb_uhci_exit,
         .vendor_id    = PCI_VENDOR_ID_INTEL,
         .device_id    = PCI_DEVICE_ID_INTEL_82371AB_2,
         .revision     = 0x01,
@@ -1184,6 +1216,7 @@  static PCIDeviceInfo uhci_info[] = {
         .qdev.size    = sizeof(UHCIState),
         .qdev.vmsd    = &vmstate_uhci,
         .init         = usb_uhci_vt82c686b_initfn,
+        .exit         = usb_uhci_exit,
         .vendor_id    = PCI_VENDOR_ID_VIA,
         .device_id    = PCI_DEVICE_ID_VIA_UHCI,
         .revision     = 0x01,