aboutsummaryrefslogtreecommitdiff
path: root/hw/usb
diff options
context:
space:
mode:
authorGerd Hoffmann <kraxel@redhat.com>2016-06-15 11:46:57 +0200
committerGerd Hoffmann <kraxel@redhat.com>2016-06-22 12:53:26 +0200
commit1e351dc373c96a6df4107db3f780a4c89a791afd (patch)
tree6a3e1eda4c32e6f38b2ad9e677d04cb7d9191692 /hw/usb
parenteb19d2b9d15bf68d27704e8727772924681644b8 (diff)
downloadqemu-1e351dc373c96a6df4107db3f780a4c89a791afd.zip
qemu-1e351dc373c96a6df4107db3f780a4c89a791afd.tar.gz
qemu-1e351dc373c96a6df4107db3f780a4c89a791afd.tar.bz2
usb: Add QOM property "attached".
USB devices in attached state are visible to the guest. This patch adds a QOM property for this. Write access is opt-in per device. Some devices manage attached state automatically (usb-host, usb-serial, usb-redir), so we can't enable write access universally but have to do it on a case by case base. So far, no device opts in. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1465984019-28963-4-git-send-email-kraxel@redhat.com [ minor codestyle fix ] Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/usb')
-rw-r--r--hw/usb/bus.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/hw/usb/bus.c b/hw/usb/bus.c
index afd70ea..c28ccb8 100644
--- a/hw/usb/bus.c
+++ b/hw/usb/bus.c
@@ -736,6 +736,48 @@ USBDevice *usbdevice_create(const char *cmdline)
return dev;
}
+static bool usb_get_attached(Object *obj, Error **errp)
+{
+ USBDevice *dev = USB_DEVICE(obj);
+
+ return dev->attached;
+}
+
+static void usb_set_attached(Object *obj, bool value, Error **errp)
+{
+ USBDevice *dev = USB_DEVICE(obj);
+ Error *err = NULL;
+
+ if (dev->attached == value) {
+ return;
+ }
+
+ if (value) {
+ usb_device_attach(dev, &err);
+ if (err) {
+ error_propagate(errp, err);
+ }
+ } else {
+ usb_device_detach(dev);
+ }
+}
+
+static void usb_device_instance_init(Object *obj)
+{
+ USBDevice *dev = USB_DEVICE(obj);
+ USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+
+ if (klass->attached_settable) {
+ object_property_add_bool(obj, "attached",
+ usb_get_attached, usb_set_attached,
+ NULL);
+ } else {
+ object_property_add_bool(obj, "attached",
+ usb_get_attached, NULL,
+ NULL);
+ }
+}
+
static void usb_device_class_init(ObjectClass *klass, void *data)
{
DeviceClass *k = DEVICE_CLASS(klass);
@@ -749,6 +791,7 @@ static const TypeInfo usb_device_type_info = {
.name = TYPE_USB_DEVICE,
.parent = TYPE_DEVICE,
.instance_size = sizeof(USBDevice),
+ .instance_init = usb_device_instance_init,
.abstract = true,
.class_size = sizeof(USBDeviceClass),
.class_init = usb_device_class_init,