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qdev: HotplugHandler: Add support for unplugging BUS-less devices 

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Igor Mammedov 2014-09-26 09:28:41 +00:00 committed by Andreas Färber
parent 2d9a982f37
commit 7716b8ca74
1 changed files with 33 additions and 26 deletions
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59
hw/core/qdev.c
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@ -223,9 +223,28 @@ void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
dev->alias_required_for_version = required_for_version;
}
static HotplugHandler *qdev_get_hotplug_handler(DeviceState *dev)
{
HotplugHandler *hotplug_ctrl = NULL;
if (dev->parent_bus && dev->parent_bus->hotplug_handler) {
hotplug_ctrl = dev->parent_bus->hotplug_handler;
} else if (object_dynamic_cast(qdev_get_machine(), TYPE_MACHINE)) {
MachineState *machine = MACHINE(qdev_get_machine());
MachineClass *mc = MACHINE_GET_CLASS(machine);
if (mc->get_hotplug_handler) {
hotplug_ctrl = mc->get_hotplug_handler(machine, dev);
}
}
return hotplug_ctrl;
}
void qdev_unplug(DeviceState *dev, Error **errp)
{
DeviceClass *dc = DEVICE_GET_CLASS(dev);
HotplugHandler *hotplug_ctrl;
HotplugHandlerClass *hdc;
if (dev->parent_bus && !qbus_is_hotpluggable(dev->parent_bus)) {
error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name);
@ -240,20 +259,18 @@ void qdev_unplug(DeviceState *dev, Error **errp)
qdev_hot_removed = true;
if (dev->parent_bus && dev->parent_bus->hotplug_handler) {
HotplugHandlerClass *hdc;
hotplug_ctrl = qdev_get_hotplug_handler(dev);
/* hotpluggable device MUST have HotplugHandler, if it doesn't
* then something is very wrong with it */
g_assert(hotplug_ctrl);
/* If device supports async unplug just request it to be done,
* otherwise just remove it synchronously */
hdc = HOTPLUG_HANDLER_GET_CLASS(dev->parent_bus->hotplug_handler);
if (hdc->unplug_request) {
hotplug_handler_unplug_request(dev->parent_bus->hotplug_handler,
dev, errp);
} else {
hotplug_handler_unplug(dev->parent_bus->hotplug_handler, dev, errp);
}
/* If device supports async unplug just request it to be done,
* otherwise just remove it synchronously */
hdc = HOTPLUG_HANDLER_GET_CLASS(hotplug_ctrl);
if (hdc->unplug_request) {
hotplug_handler_unplug_request(hotplug_ctrl, dev, errp);
} else {
assert(0);
hotplug_handler_unplug(hotplug_ctrl, dev, errp);
}
}
@ -854,6 +871,7 @@ static void device_set_realized(Object *obj, bool value, Error **errp)
{
DeviceState *dev = DEVICE(obj);
DeviceClass *dc = DEVICE_GET_CLASS(dev);
HotplugHandler *hotplug_ctrl;
BusState *bus;
Error *local_err = NULL;
@ -881,20 +899,9 @@ static void device_set_realized(Object *obj, bool value, Error **errp)
goto fail;
}
if (dev->parent_bus && dev->parent_bus->hotplug_handler) {
hotplug_handler_plug(dev->parent_bus->hotplug_handler,
dev, &local_err);
} else if (object_dynamic_cast(qdev_get_machine(), TYPE_MACHINE)) {
HotplugHandler *hotplug_ctrl;
MachineState *machine = MACHINE(qdev_get_machine());
MachineClass *mc = MACHINE_GET_CLASS(machine);
if (mc->get_hotplug_handler) {
hotplug_ctrl = mc->get_hotplug_handler(machine, dev);
if (hotplug_ctrl) {
hotplug_handler_plug(hotplug_ctrl, dev, &local_err);
}
}
hotplug_ctrl = qdev_get_hotplug_handler(dev);
if (hotplug_ctrl) {
hotplug_handler_plug(hotplug_ctrl, dev, &local_err);
}
if (local_err != NULL) {