From 81c7b381558541531fa119e16a58098d6febbf5f Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Thu, 28 Oct 2021 16:36:38 +0200 Subject: hw/core: Extract hotplug-related functions to qdev-hotplug.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Yanan Wang Acked-by: Eduardo Habkost Message-Id: <20211028150521.1973821-4-philmd@redhat.com> --- hw/core/qdev-hotplug.c | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 hw/core/qdev-hotplug.c (limited to 'hw/core/qdev-hotplug.c') diff --git a/hw/core/qdev-hotplug.c b/hw/core/qdev-hotplug.c new file mode 100644 index 0000000000..d495d0e9c7 --- /dev/null +++ b/hw/core/qdev-hotplug.c @@ -0,0 +1,73 @@ +/* + * QDev Hotplug handlers + * + * Copyright (c) Red Hat + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "hw/qdev-core.h" +#include "hw/boards.h" + +HotplugHandler *qdev_get_machine_hotplug_handler(DeviceState *dev) +{ + MachineState *machine; + MachineClass *mc; + Object *m_obj = qdev_get_machine(); + + if (object_dynamic_cast(m_obj, TYPE_MACHINE)) { + machine = MACHINE(m_obj); + mc = MACHINE_GET_CLASS(machine); + if (mc->get_hotplug_handler) { + return mc->get_hotplug_handler(machine, dev); + } + } + + return NULL; +} + +bool qdev_hotplug_allowed(DeviceState *dev, Error **errp) +{ + MachineState *machine; + MachineClass *mc; + Object *m_obj = qdev_get_machine(); + + if (object_dynamic_cast(m_obj, TYPE_MACHINE)) { + machine = MACHINE(m_obj); + mc = MACHINE_GET_CLASS(machine); + if (mc->hotplug_allowed) { + return mc->hotplug_allowed(machine, dev, errp); + } + } + + return true; +} + +HotplugHandler *qdev_get_bus_hotplug_handler(DeviceState *dev) +{ + if (dev->parent_bus) { + return dev->parent_bus->hotplug_handler; + } + return NULL; +} + +HotplugHandler *qdev_get_hotplug_handler(DeviceState *dev) +{ + HotplugHandler *hotplug_ctrl = qdev_get_machine_hotplug_handler(dev); + + if (hotplug_ctrl == NULL && dev->parent_bus) { + hotplug_ctrl = qdev_get_bus_hotplug_handler(dev); + } + return hotplug_ctrl; +} + +/* can be used as ->unplug() callback for the simple cases */ +void qdev_simple_device_unplug_cb(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + qdev_unrealize(dev); +} -- cgit 1.4.1