usb: convert to QEMU Object Model

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

14 files changed, 469 insertions, 263 deletions

diff --git a/hw/usb-audio.c b/hw/usb-audio.c
index b22d578910..561ae31d25 100644
--- a/hw/usb-audio.c
+++ b/hw/usb-audio.c
@@ -674,21 +674,27 @@ static const VMStateDescription vmstate_usb_audio = {
     .unmigratable = 1,
 };
 
-static struct USBDeviceInfo usb_audio_info = {
-    .product_desc   = "QEMU USB Audio Interface",
-    .usbdevice_name = "audio",
-    .qdev.name      = "usb-audio",
-    .qdev.size      = sizeof(USBAudioState),
-    .qdev.vmsd      = &vmstate_usb_audio,
-    .usb_desc       = &desc_audio,
-    .init           = usb_audio_initfn,
-    .handle_packet  = usb_generic_handle_packet,
-    .handle_reset   = usb_audio_handle_reset,
-    .handle_control = usb_audio_handle_control,
-    .handle_data    = usb_audio_handle_data,
-    .handle_destroy = usb_audio_handle_destroy,
-    .set_interface  = usb_audio_set_interface,
-    .qdev.props = (Property[]) {
+static void usb_audio_class_init(ObjectClass *klass, void *data)
+{
+    USBDeviceClass *k = USB_DEVICE_CLASS(klass);
+
+    k->product_desc   = "QEMU USB Audio Interface";
+    k->usb_desc       = &desc_audio;
+    k->init           = usb_audio_initfn;
+    k->handle_packet  = usb_generic_handle_packet;
+    k->handle_reset   = usb_audio_handle_reset;
+    k->handle_control = usb_audio_handle_control;
+    k->handle_data    = usb_audio_handle_data;
+    k->handle_destroy = usb_audio_handle_destroy;
+    k->set_interface  = usb_audio_set_interface;
+}
+
+static struct DeviceInfo usb_audio_info = {
+    .name      = "usb-audio",
+    .size      = sizeof(USBAudioState),
+    .vmsd      = &vmstate_usb_audio,
+    .class_init = usb_audio_class_init,
+    .props = (Property[]) {
         DEFINE_PROP_UINT32("debug", USBAudioState, debug, 0),
         DEFINE_PROP_UINT32("buffer", USBAudioState, buffer,
                            8 * USBAUDIO_PACKET_SIZE),
@@ -698,7 +704,7 @@ static struct USBDeviceInfo usb_audio_info = {
 
 static void usb_audio_register_devices(void)
 {
-    usb_qdev_register(&usb_audio_info);
+    usb_qdev_register(&usb_audio_info, "audio", NULL);
 }
 
 device_init(usb_audio_register_devices)
diff --git a/hw/usb-bt.c b/hw/usb-bt.c
index 0c1270be79..bf8c47076a 100644
--- a/hw/usb-bt.c
+++ b/hw/usb-bt.c
@@ -527,22 +527,29 @@ static const VMStateDescription vmstate_usb_bt = {
     .unmigratable = 1,
 };
 
-static struct USBDeviceInfo bt_info = {
-    .product_desc   = "QEMU BT dongle",
-    .qdev.name      = "usb-bt-dongle",
-    .qdev.size      = sizeof(struct USBBtState),
-    .qdev.vmsd      = &vmstate_usb_bt,
-    .usb_desc       = &desc_bluetooth,
-    .init           = usb_bt_initfn,
-    .handle_packet  = usb_generic_handle_packet,
-    .handle_reset   = usb_bt_handle_reset,
-    .handle_control = usb_bt_handle_control,
-    .handle_data    = usb_bt_handle_data,
-    .handle_destroy = usb_bt_handle_destroy,
+static void usb_bt_class_initfn(ObjectClass *klass, void *data)
+{
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->init           = usb_bt_initfn;
+    uc->product_desc   = "QEMU BT dongle";
+    uc->usb_desc       = &desc_bluetooth;
+    uc->handle_packet  = usb_generic_handle_packet;
+    uc->handle_reset   = usb_bt_handle_reset;
+    uc->handle_control = usb_bt_handle_control;
+    uc->handle_data    = usb_bt_handle_data;
+    uc->handle_destroy = usb_bt_handle_destroy;
+}
+
+static struct DeviceInfo bt_info = {
+    .name      = "usb-bt-dongle",
+    .size      = sizeof(struct USBBtState),
+    .vmsd      = &vmstate_usb_bt,
+    .class_init= usb_bt_class_initfn,
 };
 
 static void usb_bt_register_devices(void)
 {
-    usb_qdev_register(&bt_info);
+    usb_qdev_register(&bt_info, NULL, NULL);
 }
 device_init(usb_bt_register_devices)
diff --git a/hw/usb-bus.c b/hw/usb-bus.c
index 9b67f18b15..aeef908fe4 100644
--- a/hw/usb-bus.c
+++ b/hw/usb-bus.c
@@ -65,14 +65,104 @@ USBBus *usb_bus_find(int busnr)
     return NULL;
 }
 
+static int usb_device_init(USBDevice *dev)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    if (klass->init) {
+        return klass->init(dev);
+    }
+    return 0;
+}
+
+static void usb_device_handle_destroy(USBDevice *dev)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    if (klass->handle_destroy) {
+        klass->handle_destroy(dev);
+    }
+}
+
+int usb_device_handle_packet(USBDevice *dev, USBPacket *p)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    if (klass->handle_packet) {
+        return klass->handle_packet(dev, p);
+    }
+    return -ENOSYS;
+}
+
+void usb_device_cancel_packet(USBDevice *dev, USBPacket *p)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    if (klass->cancel_packet) {
+        klass->cancel_packet(dev, p);
+    }
+}
+
+void usb_device_handle_attach(USBDevice *dev)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    if (klass->handle_attach) {
+        klass->handle_attach(dev);
+    }
+}
+
+void usb_device_handle_reset(USBDevice *dev)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    if (klass->handle_reset) {
+        klass->handle_reset(dev);
+    }
+}
+
+int usb_device_handle_control(USBDevice *dev, USBPacket *p, int request,
+                              int value, int index, int length, uint8_t *data)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    if (klass->handle_control) {
+        return klass->handle_control(dev, p, request, value, index, length,
+                                         data);
+    }
+    return -ENOSYS;
+}
+
+int usb_device_handle_data(USBDevice *dev, USBPacket *p)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    if (klass->handle_data) {
+        return klass->handle_data(dev, p);
+    }
+    return -ENOSYS;
+}
+
+const char *usb_device_get_product_desc(USBDevice *dev)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    return klass->product_desc;
+}
+
+const USBDesc *usb_device_get_usb_desc(USBDevice *dev)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    return klass->usb_desc;
+}
+
+void usb_device_set_interface(USBDevice *dev, int interface,
+                              int alt_old, int alt_new)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    if (klass->set_interface) {
+        klass->set_interface(dev, interface, alt_old, alt_new);
+    }
+}
+
 static int usb_qdev_init(DeviceState *qdev, DeviceInfo *base)
 {
-    USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
-    USBDeviceInfo *info = DO_UPCAST(USBDeviceInfo, qdev, base);
+    USBDevice *dev = USB_DEVICE(qdev);
     int rc;
 
-    pstrcpy(dev->product_desc, sizeof(dev->product_desc), info->product_desc);
-    dev->info = info;
+    pstrcpy(dev->product_desc, sizeof(dev->product_desc),
+            usb_device_get_product_desc(dev));
     dev->auto_attach = 1;
     QLIST_INIT(&dev->strings);
     usb_ep_init(dev);
@@ -80,7 +170,7 @@ static int usb_qdev_init(DeviceState *qdev, DeviceInfo *base)
     if (rc != 0) {
         return rc;
     }
-    rc = dev->info->init(dev);
+    rc = usb_device_init(dev);
     if (rc != 0) {
         usb_release_port(dev);
         return rc;
@@ -97,34 +187,43 @@ static int usb_qdev_init(DeviceState *qdev, DeviceInfo *base)
 
 static int usb_qdev_exit(DeviceState *qdev)
 {
-    USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
+    USBDevice *dev = USB_DEVICE(qdev);
 
     if (dev->attached) {
         usb_device_detach(dev);
     }
-    if (dev->info->handle_destroy) {
-        dev->info->handle_destroy(dev);
-    }
+    usb_device_handle_destroy(dev);
     if (dev->port) {
         usb_release_port(dev);
     }
     return 0;
 }
 
-void usb_qdev_register(USBDeviceInfo *info)
+typedef struct LegacyUSBFactory
 {
-    info->qdev.bus_info = &usb_bus_info;
-    info->qdev.init     = usb_qdev_init;
-    info->qdev.unplug   = qdev_simple_unplug_cb;
-    info->qdev.exit     = usb_qdev_exit;
-    qdev_register(&info->qdev);
-}
+    const char *name;
+    const char *usbdevice_name;
+    USBDevice *(*usbdevice_init)(const char *params);
+} LegacyUSBFactory;
 
-void usb_qdev_register_many(USBDeviceInfo *info)
+static GSList *legacy_usb_factory;
+
+void usb_qdev_register(DeviceInfo *info,
+                       const char *usbdevice_name,
+                       USBDevice *(*usbdevice_init)(const char *params))
 {
-    while (info->qdev.name) {
-        usb_qdev_register(info);
-        info++;
+    info->bus_info = &usb_bus_info;
+    info->init     = usb_qdev_init;
+    info->unplug   = qdev_simple_unplug_cb;
+    info->exit     = usb_qdev_exit;
+    qdev_register_subclass(info, TYPE_USB_DEVICE);
+
+    if (usbdevice_name) {
+        LegacyUSBFactory *f = g_malloc0(sizeof(*f));
+        f->name = info->name;
+        f->usbdevice_name = usbdevice_name;
+        f->usbdevice_init = usbdevice_init;
+        legacy_usb_factory = g_slist_append(legacy_usb_factory, f);
     }
 }
 
@@ -144,7 +243,7 @@ USBDevice *usb_create(USBBus *bus, const char *name)
 #endif
 
     dev = qdev_create(&bus->qbus, name);
-    return DO_UPCAST(USBDevice, qdev, dev);
+    return USB_DEVICE(dev);
 }
 
 USBDevice *usb_create_simple(USBBus *bus, const char *name)
@@ -365,7 +464,7 @@ static const char *usb_speed(unsigned int speed)
 
 static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent)
 {
-    USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
+    USBDevice *dev = USB_DEVICE(qdev);
     USBBus *bus = usb_bus_from_device(dev);
 
     monitor_printf(mon, "%*saddr %d.%d, port %s, speed %s, name %s%s\n",
@@ -377,13 +476,13 @@ static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent)
 
 static char *usb_get_dev_path(DeviceState *qdev)
 {
-    USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
+    USBDevice *dev = USB_DEVICE(qdev);
     return g_strdup(dev->port->path);
 }
 
 static char *usb_get_fw_dev_path(DeviceState *qdev)
 {
-    USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
+    USBDevice *dev = USB_DEVICE(qdev);
     char *fw_path, *in;
     ssize_t pos = 0, fw_len;
     long nr;
@@ -434,8 +533,8 @@ void usb_info(Monitor *mon)
 USBDevice *usbdevice_create(const char *cmdline)
 {
     USBBus *bus = usb_bus_find(-1 /* any */);
-    DeviceInfo *info;
-    USBDeviceInfo *usb;
+    LegacyUSBFactory *f = NULL;
+    GSList *i;
     char driver[32];
     const char *params;
     int len;
@@ -452,17 +551,13 @@ USBDevice *usbdevice_create(const char *cmdline)
         pstrcpy(driver, sizeof(driver), cmdline);
     }
 
-    for (info = device_info_list; info != NULL; info = info->next) {
-        if (info->bus_info != &usb_bus_info)
-            continue;
-        usb = DO_UPCAST(USBDeviceInfo, qdev, info);
-        if (usb->usbdevice_name == NULL)
-            continue;
-        if (strcmp(usb->usbdevice_name, driver) != 0)
-            continue;
-        break;
+    for (i = legacy_usb_factory; i; i = i->next) {
+        f = i->data;
+        if (strcmp(f->usbdevice_name, driver) == 0) {
+            break;
+        }
     }
-    if (info == NULL) {
+    if (i == NULL) {
 #if 0
         /* no error because some drivers are not converted (yet) */
         error_report("usbdevice %s not found", driver);
@@ -470,12 +565,27 @@ USBDevice *usbdevice_create(const char *cmdline)
         return NULL;
     }
 
-    if (!usb->usbdevice_init) {
+    if (!f->usbdevice_init) {
         if (*params) {
             error_report("usbdevice %s accepts no params", driver);
             return NULL;
         }
-        return usb_create_simple(bus, usb->qdev.name);
+        return usb_create_simple(bus, f->name);
     }
-    return usb->usbdevice_init(params);
+    return f->usbdevice_init(params);
 }
+
+static TypeInfo usb_device_type_info = {
+    .name = TYPE_USB_DEVICE,
+    .parent = TYPE_DEVICE,
+    .instance_size = sizeof(USBDevice),
+    .abstract = true,
+    .class_size = sizeof(USBDeviceClass),
+};
+
+static void usb_register_devices(void)
+{
+    type_register_static(&usb_device_type_info);
+}
+
+device_init(usb_register_devices);
diff --git a/hw/usb-ccid.c b/hw/usb-ccid.c
index 3b7f95d28a..eb63dfc6df 100644
--- a/hw/usb-ccid.c
+++ b/hw/usb-ccid.c
@@ -1286,28 +1286,34 @@ static VMStateDescription ccid_vmstate = {
     }
 };
 
-static struct USBDeviceInfo ccid_info = {
-    .product_desc   = "QEMU USB CCID",
-    .qdev.name      = CCID_DEV_NAME,
-    .qdev.desc      = "CCID Rev 1.1 smartcard reader",
-    .qdev.size      = sizeof(USBCCIDState),
-    .init           = ccid_initfn,
-    .usb_desc       = &desc_ccid,
-    .handle_packet  = usb_generic_handle_packet,
-    .handle_reset   = ccid_handle_reset,
-    .handle_control = ccid_handle_control,
-    .handle_data    = ccid_handle_data,
-    .handle_destroy = ccid_handle_destroy,
-    .usbdevice_name = "ccid",
-    .qdev.props     = (Property[]) {
+static void ccid_class_initfn(ObjectClass *klass, void *data)
+{
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->init           = ccid_initfn;
+    uc->product_desc   = "QEMU USB CCID";
+    uc->usb_desc       = &desc_ccid;
+    uc->handle_packet  = usb_generic_handle_packet;
+    uc->handle_reset   = ccid_handle_reset;
+    uc->handle_control = ccid_handle_control;
+    uc->handle_data    = ccid_handle_data;
+    uc->handle_destroy = ccid_handle_destroy;
+}
+
+static struct DeviceInfo ccid_info = {
+    .name      = CCID_DEV_NAME,
+    .desc      = "CCID Rev 1.1 smartcard reader",
+    .size      = sizeof(USBCCIDState),
+    .class_init= ccid_class_initfn,
+    .vmsd      = &ccid_vmstate,
+    .props     = (Property[]) {
         DEFINE_PROP_UINT8("debug", USBCCIDState, debug, 0),
         DEFINE_PROP_END_OF_LIST(),
     },
-    .qdev.vmsd      = &ccid_vmstate,
 };
 
 static void ccid_register_devices(void)
 {
-    usb_qdev_register(&ccid_info);
+    usb_qdev_register(&ccid_info, "ccid", NULL);
 }
 device_init(ccid_register_devices)
diff --git a/hw/usb-desc.c b/hw/usb-desc.c
index b3eb97bc6b..3c3ed6a802 100644
--- a/hw/usb-desc.c
+++ b/hw/usb-desc.c
@@ -297,8 +297,8 @@ static int usb_desc_set_interface(USBDevice *dev, int index, int value)
     dev->ifaces[index] = iface;
     usb_desc_ep_init(dev);
 
-    if (dev->info->set_interface && old != value) {
-        dev->info->set_interface(dev, index, old, value);
+    if (old != value) {
+        usb_device_set_interface(dev, index, old, value);
     }
     return 0;
 }
@@ -338,7 +338,7 @@ static int usb_desc_set_config(USBDevice *dev, int value)
 
 static void usb_desc_setdefaults(USBDevice *dev)
 {
-    const USBDesc *desc = dev->info->usb_desc;
+    const USBDesc *desc = usb_device_get_usb_desc(dev);
 
     assert(desc != NULL);
     switch (dev->speed) {
@@ -355,7 +355,7 @@ static void usb_desc_setdefaults(USBDevice *dev)
 
 void usb_desc_init(USBDevice *dev)
 {
-    const USBDesc *desc = dev->info->usb_desc;
+    const USBDesc *desc = usb_device_get_usb_desc(dev);
 
     assert(desc != NULL);
     dev->speed = USB_SPEED_FULL;
@@ -371,7 +371,7 @@ void usb_desc_init(USBDevice *dev)
 
 void usb_desc_attach(USBDevice *dev)
 {
-    const USBDesc *desc = dev->info->usb_desc;
+    const USBDesc *desc = usb_device_get_usb_desc(dev);
 
     assert(desc != NULL);
     if (desc->high && (dev->port->speedmask & USB_SPEED_MASK_HIGH)) {
@@ -380,7 +380,7 @@ void usb_desc_attach(USBDevice *dev)
         dev->speed = USB_SPEED_FULL;
     } else {
         fprintf(stderr, "usb: port/device speed mismatch for \"%s\"\n",
-                dev->info->product_desc);
+                usb_device_get_product_desc(dev));
         return;
     }
     usb_desc_setdefaults(dev);
@@ -436,7 +436,7 @@ int usb_desc_string(USBDevice *dev, int index, uint8_t *dest, size_t len)
 
     str = usb_desc_get_string(dev, index);
     if (str == NULL) {
-        str = dev->info->usb_desc->str[index];
+        str = usb_device_get_usb_desc(dev)->str[index];
         if (str == NULL) {
             return 0;
         }
@@ -455,7 +455,7 @@ int usb_desc_string(USBDevice *dev, int index, uint8_t *dest, size_t len)
 
 int usb_desc_get_descriptor(USBDevice *dev, int value, uint8_t *dest, size_t len)
 {
-    const USBDesc *desc = dev->info->usb_desc;
+    const USBDesc *desc = usb_device_get_usb_desc(dev);
     const USBDescDevice *other_dev;
     uint8_t buf[256];
     uint8_t type = value >> 8;
@@ -463,9 +463,9 @@ int usb_desc_get_descriptor(USBDevice *dev, int value, uint8_t *dest, size_t len
     int ret = -1;
 
     if (dev->speed == USB_SPEED_HIGH) {
-        other_dev = dev->info->usb_desc->full;
+        other_dev = usb_device_get_usb_desc(dev)->full;
     } else {
-        other_dev = dev->info->usb_desc->high;
+        other_dev = usb_device_get_usb_desc(dev)->high;
     }
 
     switch(type) {
@@ -520,7 +520,7 @@ int usb_desc_get_descriptor(USBDevice *dev, int value, uint8_t *dest, size_t len
 int usb_desc_handle_control(USBDevice *dev, USBPacket *p,
         int request, int value, int index, int length, uint8_t *data)
 {
-    const USBDesc *desc = dev->info->usb_desc;
+    const USBDesc *desc = usb_device_get_usb_desc(dev);
     int ret = -1;
 
     assert(desc != NULL);
diff --git a/hw/usb-hid.c b/hw/usb-hid.c
index 997f8287d8..88fdd35e36 100644
--- a/hw/usb-hid.c
+++ b/hw/usb-hid.c
@@ -553,53 +553,73 @@ static const VMStateDescription vmstate_usb_kbd = {
     }
 };
 
-static struct USBDeviceInfo hid_info[] = {
-    {
-        .product_desc   = "QEMU USB Tablet",
-        .qdev.name      = "usb-tablet",
-        .usbdevice_name = "tablet",
-        .qdev.size      = sizeof(USBHIDState),
-        .qdev.vmsd      = &vmstate_usb_ptr,
-        .usb_desc       = &desc_tablet,
-        .init           = usb_tablet_initfn,
-        .handle_packet  = usb_generic_handle_packet,
-        .handle_reset   = usb_hid_handle_reset,
-        .handle_control = usb_hid_handle_control,
-        .handle_data    = usb_hid_handle_data,
-        .handle_destroy = usb_hid_handle_destroy,
-    },{
-        .product_desc   = "QEMU USB Mouse",
-        .qdev.name      = "usb-mouse",
-        .usbdevice_name = "mouse",
-        .qdev.size      = sizeof(USBHIDState),
-        .qdev.vmsd      = &vmstate_usb_ptr,
-        .usb_desc       = &desc_mouse,
-        .init           = usb_mouse_initfn,
-        .handle_packet  = usb_generic_handle_packet,
-        .handle_reset   = usb_hid_handle_reset,
-        .handle_control = usb_hid_handle_control,
-        .handle_data    = usb_hid_handle_data,
-        .handle_destroy = usb_hid_handle_destroy,
-    },{
-        .product_desc   = "QEMU USB Keyboard",
-        .qdev.name      = "usb-kbd",
-        .usbdevice_name = "keyboard",
-        .qdev.size      = sizeof(USBHIDState),
-        .qdev.vmsd      = &vmstate_usb_kbd,
-        .usb_desc       = &desc_keyboard,
-        .init           = usb_keyboard_initfn,
-        .handle_packet  = usb_generic_handle_packet,
-        .handle_reset   = usb_hid_handle_reset,
-        .handle_control = usb_hid_handle_control,
-        .handle_data    = usb_hid_handle_data,
-        .handle_destroy = usb_hid_handle_destroy,
-    },{
-        /* end of list */
-    }
+static void usb_tablet_class_initfn(ObjectClass *klass, void *data)
+{
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->init           = usb_tablet_initfn;
+    uc->product_desc   = "QEMU USB Tablet";
+    uc->usb_desc       = &desc_tablet;
+    uc->handle_packet  = usb_generic_handle_packet;
+    uc->handle_reset   = usb_hid_handle_reset;
+    uc->handle_control = usb_hid_handle_control;
+    uc->handle_data    = usb_hid_handle_data;
+    uc->handle_destroy = usb_hid_handle_destroy;
+}
+
+static struct DeviceInfo usb_tablet_info = {
+    .name      = "usb-tablet",
+    .size      = sizeof(USBHIDState),
+    .vmsd      = &vmstate_usb_ptr,
+    .class_init= usb_tablet_class_initfn,
+};
+
+static void usb_mouse_class_initfn(ObjectClass *klass, void *data)
+{
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->init           = usb_mouse_initfn;
+    uc->product_desc   = "QEMU USB Mouse";
+    uc->usb_desc       = &desc_mouse;
+    uc->handle_packet  = usb_generic_handle_packet;
+    uc->handle_reset   = usb_hid_handle_reset;
+    uc->handle_control = usb_hid_handle_control;
+    uc->handle_data    = usb_hid_handle_data;
+    uc->handle_destroy = usb_hid_handle_destroy;
+}
+
+static struct DeviceInfo usb_mouse_info = {
+    .name      = "usb-mouse",
+    .size      = sizeof(USBHIDState),
+    .vmsd      = &vmstate_usb_ptr,
+    .class_init= usb_mouse_class_initfn,
+};
+
+static void usb_keyboard_class_initfn(ObjectClass *klass, void *data)
+{
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->init           = usb_keyboard_initfn;
+    uc->product_desc   = "QEMU USB Keyboard";
+    uc->usb_desc       = &desc_keyboard;
+    uc->handle_packet  = usb_generic_handle_packet;
+    uc->handle_reset   = usb_hid_handle_reset;
+    uc->handle_control = usb_hid_handle_control;
+    uc->handle_data    = usb_hid_handle_data;
+    uc->handle_destroy = usb_hid_handle_destroy;
+}
+
+static struct DeviceInfo usb_keyboard_info = {
+    .name      = "usb-kbd",
+    .size      = sizeof(USBHIDState),
+    .vmsd      = &vmstate_usb_kbd,
+    .class_init= usb_keyboard_class_initfn,
 };
 
 static void usb_hid_register_devices(void)
 {
-    usb_qdev_register_many(hid_info);
+    usb_qdev_register(&usb_tablet_info, "tablet", NULL);
+    usb_qdev_register(&usb_mouse_info, "mouse", NULL);
+    usb_qdev_register(&usb_keyboard_info, "keyboard", NULL);
 }
 device_init(usb_hid_register_devices)
diff --git a/hw/usb-hub.c b/hw/usb-hub.c
index 069611bbfb..ee4e6a6920 100644
--- a/hw/usb-hub.c
+++ b/hw/usb-hub.c
@@ -533,23 +533,30 @@ static const VMStateDescription vmstate_usb_hub = {
     }
 };
 
-static struct USBDeviceInfo hub_info = {
-    .product_desc   = "QEMU USB Hub",
-    .qdev.name      = "usb-hub",
-    .qdev.fw_name    = "hub",
-    .qdev.size      = sizeof(USBHubState),
-    .qdev.vmsd      = &vmstate_usb_hub,
-    .usb_desc       = &desc_hub,
-    .init           = usb_hub_initfn,
-    .handle_packet  = usb_hub_handle_packet,
-    .handle_reset   = usb_hub_handle_reset,
-    .handle_control = usb_hub_handle_control,
-    .handle_data    = usb_hub_handle_data,
-    .handle_destroy = usb_hub_handle_destroy,
+static void  usb_hub_class_initfn(ObjectClass *klass, void *data)
+{
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->init           = usb_hub_initfn;
+    uc->product_desc   = "QEMU USB Hub";
+    uc->usb_desc       = &desc_hub;
+    uc->handle_packet  = usb_hub_handle_packet;
+    uc->handle_reset   = usb_hub_handle_reset;
+    uc->handle_control = usb_hub_handle_control;
+    uc->handle_data    = usb_hub_handle_data;
+    uc->handle_destroy = usb_hub_handle_destroy;
+}
+
+static struct DeviceInfo hub_info = {
+    .name      = "usb-hub",
+    .fw_name   = "hub",
+    .size      = sizeof(USBHubState),
+    .vmsd      = &vmstate_usb_hub,
+    .class_init= usb_hub_class_initfn,
 };
 
 static void usb_hub_register_devices(void)
 {
-    usb_qdev_register(&hub_info);
+    usb_qdev_register(&hub_info, NULL, NULL);
 }
 device_init(usb_hub_register_devices)
diff --git a/hw/usb-msd.c b/hw/usb-msd.c
index 186831d71b..ceb01e0eef 100644
--- a/hw/usb-msd.c
+++ b/hw/usb-msd.c
@@ -636,23 +636,28 @@ static const VMStateDescription vmstate_usb_msd = {
     }
 };
 
-static struct USBDeviceInfo msd_info = {
-    .product_desc   = "QEMU USB MSD",
-    .qdev.name      = "usb-storage",
-    .qdev.fw_name      = "storage",
-    .qdev.size      = sizeof(MSDState),
-    .qdev.vmsd      = &vmstate_usb_msd,
-    .usb_desc       = &desc,
-    .init           = usb_msd_initfn,
-    .handle_packet  = usb_generic_handle_packet,
-    .cancel_packet  = usb_msd_cancel_io,
-    .handle_attach  = usb_desc_attach,
-    .handle_reset   = usb_msd_handle_reset,
-    .handle_control = usb_msd_handle_control,
-    .handle_data    = usb_msd_handle_data,
-    .usbdevice_name = "disk",
-    .usbdevice_init = usb_msd_init,
-    .qdev.props     = (Property[]) {
+static void usb_msd_class_initfn(ObjectClass *klass, void *data)
+{
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->init           = usb_msd_initfn;
+    uc->product_desc   = "QEMU USB MSD";
+    uc->usb_desc       = &desc;
+    uc->handle_packet  = usb_generic_handle_packet;
+    uc->cancel_packet  = usb_msd_cancel_io;
+    uc->handle_attach  = usb_desc_attach;
+    uc->handle_reset   = usb_msd_handle_reset;
+    uc->handle_control = usb_msd_handle_control;
+    uc->handle_data    = usb_msd_handle_data;
+}
+
+static struct DeviceInfo msd_info = {
+    .name      = "usb-storage",
+    .fw_name   = "storage",
+    .size      = sizeof(MSDState),
+    .vmsd      = &vmstate_usb_msd,
+    .class_init= usb_msd_class_initfn,
+    .props     = (Property[]) {
         DEFINE_BLOCK_PROPERTIES(MSDState, conf),
         DEFINE_PROP_STRING("serial", MSDState, serial),
         DEFINE_PROP_BIT("removable", MSDState, removable, 0, false),
@@ -662,6 +667,6 @@ static struct USBDeviceInfo msd_info = {
 
 static void usb_msd_register_devices(void)
 {
-    usb_qdev_register(&msd_info);
+    usb_qdev_register(&msd_info, "disk", usb_msd_init);
 }
 device_init(usb_msd_register_devices)
diff --git a/hw/usb-net.c b/hw/usb-net.c
index fd4106b99b..57b58ac1da 100644
--- a/hw/usb-net.c
+++ b/hw/usb-net.c
@@ -1385,29 +1385,34 @@ static const VMStateDescription vmstate_usb_net = {
     .unmigratable = 1,
 };
 
-static struct USBDeviceInfo net_info = {
-    .product_desc   = "QEMU USB Network Interface",
-    .qdev.name      = "usb-net",
-    .qdev.fw_name    = "network",
-    .qdev.size      = sizeof(USBNetState),
-    .qdev.vmsd      = &vmstate_usb_net,
-    .usb_desc       = &desc_net,
-    .init           = usb_net_initfn,
-    .handle_packet  = usb_generic_handle_packet,
-    .handle_reset   = usb_net_handle_reset,
-    .handle_control = usb_net_handle_control,
-    .handle_data    = usb_net_handle_data,
-    .handle_destroy = usb_net_handle_destroy,
-    .usbdevice_name = "net",
-    .usbdevice_init = usb_net_init,
-    .qdev.props     = (Property[]) {
+static void usb_net_class_initfn(ObjectClass *klass, void *data)
+{
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->init           = usb_net_initfn;
+    uc->product_desc   = "QEMU USB Network Interface";
+    uc->usb_desc       = &desc_net;
+    uc->handle_packet  = usb_generic_handle_packet;
+    uc->handle_reset   = usb_net_handle_reset;
+    uc->handle_control = usb_net_handle_control;
+    uc->handle_data    = usb_net_handle_data;
+    uc->handle_destroy = usb_net_handle_destroy;
+}
+
+static struct DeviceInfo net_info = {
+    .name      = "usb-net",
+    .fw_name   = "network",
+    .size      = sizeof(USBNetState),
+    .vmsd      = &vmstate_usb_net,
+    .class_init= usb_net_class_initfn,
+    .props     = (Property[]) {
         DEFINE_NIC_PROPERTIES(USBNetState, conf),
         DEFINE_PROP_END_OF_LIST(),
-    }
+    },
 };
 
 static void usb_net_register_devices(void)
 {
-    usb_qdev_register(&net_info);
+    usb_qdev_register(&net_info, "net", usb_net_init);
 }
 device_init(usb_net_register_devices)
diff --git a/hw/usb-serial.c b/hw/usb-serial.c
index e3c82388ac..de49607831 100644
--- a/hw/usb-serial.c
+++ b/hw/usb-serial.c
@@ -570,41 +570,51 @@ static const VMStateDescription vmstate_usb_serial = {
     .unmigratable = 1,
 };
 
-static struct USBDeviceInfo serial_info = {
-    .product_desc   = "QEMU USB Serial",
-    .qdev.name      = "usb-serial",
-    .qdev.size      = sizeof(USBSerialState),
-    .qdev.vmsd      = &vmstate_usb_serial,
-    .usb_desc       = &desc_serial,
-    .init           = usb_serial_initfn,
-    .handle_packet  = usb_generic_handle_packet,
-    .handle_reset   = usb_serial_handle_reset,
-    .handle_control = usb_serial_handle_control,
-    .handle_data    = usb_serial_handle_data,
-    .handle_destroy = usb_serial_handle_destroy,
-    .usbdevice_name = "serial",
-    .usbdevice_init = usb_serial_init,
-    .qdev.props     = (Property[]) {
+static void usb_serial_class_initfn(ObjectClass *klass, void *data)
+{
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->init = usb_serial_initfn;
+    uc->product_desc   = "QEMU USB Serial";
+    uc->usb_desc       = &desc_serial;
+    uc->handle_packet  = usb_generic_handle_packet;
+    uc->handle_reset   = usb_serial_handle_reset;
+    uc->handle_control = usb_serial_handle_control;
+    uc->handle_data    = usb_serial_handle_data;
+    uc->handle_destroy = usb_serial_handle_destroy;
+}
+
+static struct DeviceInfo serial_info = {
+    .name      = "usb-serial",
+    .size      = sizeof(USBSerialState),
+    .vmsd      = &vmstate_usb_serial,
+    .class_init= usb_serial_class_initfn,
+    .props     = (Property[]) {
         DEFINE_PROP_CHR("chardev", USBSerialState, cs),
         DEFINE_PROP_END_OF_LIST(),
     },
 };
 
-static struct USBDeviceInfo braille_info = {
-    .product_desc   = "QEMU USB Braille",
-    .qdev.name      = "usb-braille",
-    .qdev.size      = sizeof(USBSerialState),
-    .qdev.vmsd      = &vmstate_usb_serial,
-    .usb_desc       = &desc_braille,
-    .init           = usb_serial_initfn,
-    .handle_packet  = usb_generic_handle_packet,
-    .handle_reset   = usb_serial_handle_reset,
-    .handle_control = usb_serial_handle_control,
-    .handle_data    = usb_serial_handle_data,
-    .handle_destroy = usb_serial_handle_destroy,
-    .usbdevice_name = "braille",
-    .usbdevice_init = usb_braille_init,
-    .qdev.props     = (Property[]) {
+static void usb_braille_class_initfn(ObjectClass *klass, void *data)
+{
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->init           = usb_serial_initfn;
+    uc->product_desc   = "QEMU USB Braille";
+    uc->usb_desc       = &desc_braille;
+    uc->handle_packet  = usb_generic_handle_packet;
+    uc->handle_reset   = usb_serial_handle_reset;
+    uc->handle_control = usb_serial_handle_control;
+    uc->handle_data    = usb_serial_handle_data;
+    uc->handle_destroy = usb_serial_handle_destroy;
+}
+
+static struct DeviceInfo braille_info = {
+    .name      = "usb-braille",
+    .size      = sizeof(USBSerialState),
+    .vmsd      = &vmstate_usb_serial,
+    .class_init= usb_braille_class_initfn,
+    .props     = (Property[]) {
         DEFINE_PROP_CHR("chardev", USBSerialState, cs),
         DEFINE_PROP_END_OF_LIST(),
     },
@@ -612,7 +622,7 @@ static struct USBDeviceInfo braille_info = {
 
 static void usb_serial_register_devices(void)
 {
-    usb_qdev_register(&serial_info);
-    usb_qdev_register(&braille_info);
+    usb_qdev_register(&serial_info, "serial", usb_serial_init);
+    usb_qdev_register(&braille_info, "braille", usb_braille_init);
 }
 device_init(usb_serial_register_devices)
diff --git a/hw/usb-wacom.c b/hw/usb-wacom.c
index 61d5b184df..9b20a3154c 100644
--- a/hw/usb-wacom.c
+++ b/hw/usb-wacom.c
@@ -349,24 +349,30 @@ static const VMStateDescription vmstate_usb_wacom = {
     .unmigratable = 1,
 };
 
-static struct USBDeviceInfo wacom_info = {
-    .product_desc   = "QEMU PenPartner Tablet",
-    .qdev.name      = "usb-wacom-tablet",
-    .qdev.desc      = "QEMU PenPartner Tablet",
-    .usbdevice_name = "wacom-tablet",
-    .usb_desc       = &desc_wacom,
-    .qdev.size      = sizeof(USBWacomState),
-    .qdev.vmsd      = &vmstate_usb_wacom,
-    .init           = usb_wacom_initfn,
-    .handle_packet  = usb_generic_handle_packet,
-    .handle_reset   = usb_wacom_handle_reset,
-    .handle_control = usb_wacom_handle_control,
-    .handle_data    = usb_wacom_handle_data,
-    .handle_destroy = usb_wacom_handle_destroy,
+static void usb_wacom_class_init(ObjectClass *class, void *data)
+{
+    USBDeviceClass *uc = USB_DEVICE_CLASS(class);
+
+    uc->product_desc   = "QEMU PenPartner Tablet";
+    uc->usb_desc       = &desc_wacom;
+    uc->init           = usb_wacom_initfn;
+    uc->handle_packet  = usb_generic_handle_packet;
+    uc->handle_reset   = usb_wacom_handle_reset;
+    uc->handle_control = usb_wacom_handle_control;
+    uc->handle_data    = usb_wacom_handle_data;
+    uc->handle_destroy = usb_wacom_handle_destroy;
+}
+
+static struct DeviceInfo wacom_info = {
+    .name      = "usb-wacom-tablet",
+    .desc      = "QEMU PenPartner Tablet",
+    .size      = sizeof(USBWacomState),
+    .vmsd      = &vmstate_usb_wacom,
+    .class_init= usb_wacom_class_init,
 };
 
 static void usb_wacom_register_devices(void)
 {
-    usb_qdev_register(&wacom_info);
+    usb_qdev_register(&wacom_info, "wacom-tablet", NULL);
 }
 device_init(usb_wacom_register_devices)
diff --git a/hw/usb-xhci.c b/hw/usb-xhci.c
index 28fe9de2a0..95bf010101 100644
--- a/hw/usb-xhci.c
+++ b/hw/usb-xhci.c
@@ -1458,7 +1458,7 @@ static int xhci_fire_ctl_transfer(XHCIState *xhci, XHCITransfer *xfer)
     if (!xfer->in_xfer) {
         xhci_xfer_data(xfer, xfer->data, wLength, 0, 1, 0);
     }
-    ret = dev->info->handle_control(dev, &xfer->packet,
+    ret = usb_device_handle_control(dev, &xfer->packet,
                                     (bmRequestType << 8) | bRequest,
                                     wValue, wIndex, wLength, xfer->data);
 
@@ -1767,7 +1767,7 @@ static TRBCCode xhci_address_slot(XHCIState *xhci, unsigned int slotid,
         slot->devaddr = xhci->devaddr++;
         slot_ctx[3] = (SLOT_ADDRESSED << SLOT_STATE_SHIFT) | slot->devaddr;
         DPRINTF("xhci: device address is %d\n", slot->devaddr);
-        dev->info->handle_control(dev, NULL,
+        usb_device_handle_control(dev, NULL,
                                   DeviceOutRequest | USB_REQ_SET_ADDRESS,
                                   slot->devaddr, 0, 0, NULL);
     }
diff --git a/hw/usb.c b/hw/usb.c
index 860538ad3b..c3ff5b7093 100644
--- a/hw/usb.c
+++ b/hw/usb.c
@@ -95,8 +95,8 @@ static int do_token_setup(USBDevice *s, USBPacket *p)
     index   = (s->setup_buf[5] << 8) | s->setup_buf[4];
 
     if (s->setup_buf[0] & USB_DIR_IN) {
-        ret = s->info->handle_control(s, p, request, value, index,
-                                      s->setup_len, s->data_buf);
+        ret = usb_device_handle_control(s, p, request, value, index,
+                                        s->setup_len, s->data_buf);
         if (ret == USB_RET_ASYNC) {
              s->setup_state = SETUP_STATE_SETUP;
              return USB_RET_ASYNC;
@@ -129,7 +129,7 @@ static int do_token_in(USBDevice *s, USBPacket *p)
     int ret = 0;
 
     if (p->devep != 0)
-        return s->info->handle_data(s, p);
+        return usb_device_handle_data(s, p);
 
     request = (s->setup_buf[0] << 8) | s->setup_buf[1];
     value   = (s->setup_buf[3] << 8) | s->setup_buf[2];
@@ -138,8 +138,8 @@ static int do_token_in(USBDevice *s, USBPacket *p)
     switch(s->setup_state) {
     case SETUP_STATE_ACK:
         if (!(s->setup_buf[0] & USB_DIR_IN)) {
-            ret = s->info->handle_control(s, p, request, value, index,
-                                          s->setup_len, s->data_buf);
+            ret = usb_device_handle_control(s, p, request, value, index,
+                                            s->setup_len, s->data_buf);
             if (ret == USB_RET_ASYNC) {
                 return USB_RET_ASYNC;
             }
@@ -176,7 +176,7 @@ static int do_token_in(USBDevice *s, USBPacket *p)
 static int do_token_out(USBDevice *s, USBPacket *p)
 {
     if (p->devep != 0)
-        return s->info->handle_data(s, p);
+        return usb_device_handle_data(s, p);
 
     switch(s->setup_state) {
     case SETUP_STATE_ACK:
@@ -220,9 +220,7 @@ int usb_generic_handle_packet(USBDevice *s, USBPacket *p)
     switch(p->pid) {
     case USB_MSG_ATTACH:
         s->state = USB_STATE_ATTACHED;
-        if (s->info->handle_attach) {
-            s->info->handle_attach(s);
-        }
+        usb_device_handle_attach(s);
         return 0;
 
     case USB_MSG_DETACH:
@@ -233,9 +231,7 @@ int usb_generic_handle_packet(USBDevice *s, USBPacket *p)
         s->remote_wakeup = 0;
         s->addr = 0;
         s->state = USB_STATE_DEFAULT;
-        if (s->info->handle_reset) {
-            s->info->handle_reset(s);
-        }
+        usb_device_handle_reset(s);
         return 0;
     }
 
@@ -326,7 +322,7 @@ int usb_handle_packet(USBDevice *dev, USBPacket *p)
     int ret;
 
     assert(p->owner == NULL);
-    ret = dev->info->handle_packet(dev, p);
+    ret = usb_device_handle_packet(dev, p);
     if (ret == USB_RET_ASYNC) {
         if (p->owner == NULL) {
             p->owner = usb_ep_get(dev, p->pid, p->devep);
@@ -357,7 +353,7 @@ void usb_packet_complete(USBDevice *dev, USBPacket *p)
 void usb_cancel_packet(USBPacket * p)
 {
     assert(p->owner != NULL);
-    p->owner->dev->info->cancel_packet(p->owner->dev, p);
+    usb_device_cancel_packet(p->owner->dev, p);
     p->owner = NULL;
 }
 
diff --git a/hw/usb.h b/hw/usb.h
index 37f7d96e66..5b9badba68 100644
--- a/hw/usb.h
+++ b/hw/usb.h
@@ -1,3 +1,6 @@
+#ifndef QEMU_USB_H
+#define QEMU_USB_H
+
 /*
  * QEMU USB API
  *
@@ -150,7 +153,6 @@ typedef struct USBBus USBBus;
 typedef struct USBBusOps USBBusOps;
 typedef struct USBPort USBPort;
 typedef struct USBDevice USBDevice;
-typedef struct USBDeviceInfo USBDeviceInfo;
 typedef struct USBPacket USBPacket;
 typedef struct USBEndpoint USBEndpoint;
 
@@ -183,7 +185,6 @@ struct USBEndpoint {
 /* definition of a USB device */
 struct USBDevice {
     DeviceState qdev;
-    USBDeviceInfo *info;
     USBPort *port;
     char *port_path;
     void *opaque;
@@ -219,8 +220,17 @@ struct USBDevice {
     const USBDescIface  *ifaces[USB_MAX_INTERFACES];
 };
 
-struct USBDeviceInfo {
-    DeviceInfo qdev;
+#define TYPE_USB_DEVICE "usb-device"
+#define USB_DEVICE(obj) \
+     OBJECT_CHECK(USBDevice, (obj), TYPE_USB_DEVICE)
+#define USB_DEVICE_CLASS(klass) \
+     OBJECT_CLASS_CHECK(USBDeviceClass, (klass), TYPE_USB_DEVICE)
+#define USB_DEVICE_GET_CLASS(obj) \
+     OBJECT_GET_CLASS(USBDeviceClass, (obj), TYPE_USB_DEVICE)
+
+typedef struct USBDeviceClass {
+    DeviceClass parent_class;
+
     int (*init)(USBDevice *dev);
 
     /*
@@ -274,11 +284,7 @@ struct USBDeviceInfo {
 
     const char *product_desc;
     const USBDesc *usb_desc;
-
-    /* handle legacy -usbdevice command line options */
-    const char *usbdevice_name;
-    USBDevice *(*usbdevice_init)(const char *params);
-};
+} USBDeviceClass;
 
 typedef struct USBPortOps {
     void (*attach)(USBPort *port);
@@ -412,8 +418,9 @@ struct USBBusOps {
 
 void usb_bus_new(USBBus *bus, USBBusOps *ops, DeviceState *host);
 USBBus *usb_bus_find(int busnr);
-void usb_qdev_register(USBDeviceInfo *info);
-void usb_qdev_register_many(USBDeviceInfo *info);
+void usb_qdev_register(DeviceInfo *info,
+                       const char *usbdevice_name,
+                       USBDevice *(*usbdevice_init)(const char *params));
 USBDevice *usb_create(USBBus *bus, const char *name);
 USBDevice *usb_create_simple(USBBus *bus, const char *name);
 USBDevice *usbdevice_create(const char *cmdline);
@@ -445,4 +452,25 @@ extern const VMStateDescription vmstate_usb_device;
     .offset     = vmstate_offset_value(_state, _field, USBDevice),   \
 }
 
+int usb_device_handle_packet(USBDevice *dev, USBPacket *p);
+
+void usb_device_cancel_packet(USBDevice *dev, USBPacket *p);
+
+void usb_device_handle_attach(USBDevice *dev);
+
+void usb_device_handle_reset(USBDevice *dev);
+
+int usb_device_handle_control(USBDevice *dev, USBPacket *p, int request, int value,
+                              int index, int length, uint8_t *data);
+
+int usb_device_handle_data(USBDevice *dev, USBPacket *p);
+
+void usb_device_set_interface(USBDevice *dev, int interface,
+                              int alt_old, int alt_new);
+
+const char *usb_device_get_product_desc(USBDevice *dev);
+
+const USBDesc *usb_device_get_usb_desc(USBDevice *dev);
+
+#endif