| /* |
| * Dynamic device configuration and creation. |
| * |
| * Copyright (c) 2009 CodeSourcery |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| /* The theory here is that it should be possible to create a machine without |
| knowledge of specific devices. Historically board init routines have |
| passed a bunch of arguments to each device, requiring the board know |
| exactly which device it is dealing with. This file provides an abstract |
| API for device configuration and initialization. Devices will generally |
| inherit from a particular bus (e.g. PCI or I2C) rather than |
| this API directly. */ |
| |
| #include "hw/qdev.h" |
| #include "sysemu/sysemu.h" |
| #include "qapi/error.h" |
| #include "qapi/qmp/qerror.h" |
| #include "qapi/visitor.h" |
| #include "qapi/qmp/qjson.h" |
| #include "monitor/monitor.h" |
| |
| int qdev_hotplug = 0; |
| static bool qdev_hot_added = false; |
| static bool qdev_hot_removed = false; |
| |
| const VMStateDescription *qdev_get_vmsd(DeviceState *dev) |
| { |
| DeviceClass *dc = DEVICE_GET_CLASS(dev); |
| return dc->vmsd; |
| } |
| |
| const char *qdev_fw_name(DeviceState *dev) |
| { |
| DeviceClass *dc = DEVICE_GET_CLASS(dev); |
| |
| if (dc->fw_name) { |
| return dc->fw_name; |
| } |
| |
| return object_get_typename(OBJECT(dev)); |
| } |
| |
| static void qdev_property_add_legacy(DeviceState *dev, Property *prop, |
| Error **errp); |
| |
| static void bus_remove_child(BusState *bus, DeviceState *child) |
| { |
| BusChild *kid; |
| |
| QTAILQ_FOREACH(kid, &bus->children, sibling) { |
| if (kid->child == child) { |
| char name[32]; |
| |
| snprintf(name, sizeof(name), "child[%d]", kid->index); |
| QTAILQ_REMOVE(&bus->children, kid, sibling); |
| |
| /* This gives back ownership of kid->child back to us. */ |
| object_property_del(OBJECT(bus), name, NULL); |
| object_unref(OBJECT(kid->child)); |
| g_free(kid); |
| return; |
| } |
| } |
| } |
| |
| static void bus_add_child(BusState *bus, DeviceState *child) |
| { |
| char name[32]; |
| BusChild *kid = g_malloc0(sizeof(*kid)); |
| |
| if (qdev_hotplug) { |
| assert(bus->allow_hotplug); |
| } |
| |
| kid->index = bus->max_index++; |
| kid->child = child; |
| object_ref(OBJECT(kid->child)); |
| |
| QTAILQ_INSERT_HEAD(&bus->children, kid, sibling); |
| |
| /* This transfers ownership of kid->child to the property. */ |
| snprintf(name, sizeof(name), "child[%d]", kid->index); |
| object_property_add_link(OBJECT(bus), name, |
| object_get_typename(OBJECT(child)), |
| (Object **)&kid->child, |
| NULL); |
| } |
| |
| void qdev_set_parent_bus(DeviceState *dev, BusState *bus) |
| { |
| dev->parent_bus = bus; |
| object_ref(OBJECT(bus)); |
| bus_add_child(bus, dev); |
| } |
| |
| /* Create a new device. This only initializes the device state structure |
| and allows properties to be set. qdev_init should be called to |
| initialize the actual device emulation. */ |
| DeviceState *qdev_create(BusState *bus, const char *name) |
| { |
| DeviceState *dev; |
| |
| dev = qdev_try_create(bus, name); |
| if (!dev) { |
| if (bus) { |
| error_report("Unknown device '%s' for bus '%s'", name, |
| object_get_typename(OBJECT(bus))); |
| } else { |
| error_report("Unknown device '%s' for default sysbus", name); |
| } |
| abort(); |
| } |
| |
| return dev; |
| } |
| |
| DeviceState *qdev_try_create(BusState *bus, const char *type) |
| { |
| DeviceState *dev; |
| |
| if (object_class_by_name(type) == NULL) { |
| return NULL; |
| } |
| dev = DEVICE(object_new(type)); |
| if (!dev) { |
| return NULL; |
| } |
| |
| if (!bus) { |
| bus = sysbus_get_default(); |
| } |
| |
| qdev_set_parent_bus(dev, bus); |
| object_unref(OBJECT(dev)); |
| return dev; |
| } |
| |
| /* Initialize a device. Device properties should be set before calling |
| this function. IRQs and MMIO regions should be connected/mapped after |
| calling this function. |
| On failure, destroy the device and return negative value. |
| Return 0 on success. */ |
| int qdev_init(DeviceState *dev) |
| { |
| Error *local_err = NULL; |
| |
| assert(!dev->realized); |
| |
| object_property_set_bool(OBJECT(dev), true, "realized", &local_err); |
| if (local_err != NULL) { |
| error_free(local_err); |
| qdev_free(dev); |
| return -1; |
| } |
| return 0; |
| } |
| |
| static void device_realize(DeviceState *dev, Error **err) |
| { |
| DeviceClass *dc = DEVICE_GET_CLASS(dev); |
| |
| if (dc->init) { |
| int rc = dc->init(dev); |
| if (rc < 0) { |
| error_setg(err, "Device initialization failed."); |
| return; |
| } |
| } |
| } |
| |
| static void device_unrealize(DeviceState *dev, Error **errp) |
| { |
| DeviceClass *dc = DEVICE_GET_CLASS(dev); |
| |
| if (dc->exit) { |
| int rc = dc->exit(dev); |
| if (rc < 0) { |
| error_setg(errp, "Device exit failed."); |
| return; |
| } |
| } |
| } |
| |
| void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, |
| int required_for_version) |
| { |
| assert(!dev->realized); |
| dev->instance_id_alias = alias_id; |
| dev->alias_required_for_version = required_for_version; |
| } |
| |
| void qdev_unplug(DeviceState *dev, Error **errp) |
| { |
| DeviceClass *dc = DEVICE_GET_CLASS(dev); |
| |
| if (!dev->parent_bus->allow_hotplug) { |
| error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); |
| return; |
| } |
| assert(dc->unplug != NULL); |
| |
| qdev_hot_removed = true; |
| |
| if (dc->unplug(dev) < 0) { |
| error_set(errp, QERR_UNDEFINED_ERROR); |
| return; |
| } |
| } |
| |
| static int qdev_reset_one(DeviceState *dev, void *opaque) |
| { |
| device_reset(dev); |
| |
| return 0; |
| } |
| |
| static int qbus_reset_one(BusState *bus, void *opaque) |
| { |
| BusClass *bc = BUS_GET_CLASS(bus); |
| if (bc->reset) { |
| return bc->reset(bus); |
| } |
| return 0; |
| } |
| |
| void qdev_reset_all(DeviceState *dev) |
| { |
| qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL); |
| } |
| |
| void qbus_reset_all(BusState *bus) |
| { |
| qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL); |
| } |
| |
| void qbus_reset_all_fn(void *opaque) |
| { |
| BusState *bus = opaque; |
| qbus_reset_all(bus); |
| } |
| |
| /* can be used as ->unplug() callback for the simple cases */ |
| int qdev_simple_unplug_cb(DeviceState *dev) |
| { |
| /* just zap it */ |
| qdev_free(dev); |
| return 0; |
| } |
| |
| |
| /* Like qdev_init(), but terminate program via error_report() instead of |
| returning an error value. This is okay during machine creation. |
| Don't use for hotplug, because there callers need to recover from |
| failure. Exception: if you know the device's init() callback can't |
| fail, then qdev_init_nofail() can't fail either, and is therefore |
| usable even then. But relying on the device implementation that |
| way is somewhat unclean, and best avoided. */ |
| void qdev_init_nofail(DeviceState *dev) |
| { |
| const char *typename = object_get_typename(OBJECT(dev)); |
| |
| if (qdev_init(dev) < 0) { |
| error_report("Initialization of device %s failed", typename); |
| exit(1); |
| } |
| } |
| |
| /* Unlink device from bus and free the structure. */ |
| void qdev_free(DeviceState *dev) |
| { |
| object_unparent(OBJECT(dev)); |
| } |
| |
| void qdev_machine_creation_done(void) |
| { |
| /* |
| * ok, initial machine setup is done, starting from now we can |
| * only create hotpluggable devices |
| */ |
| qdev_hotplug = 1; |
| } |
| |
| bool qdev_machine_modified(void) |
| { |
| return qdev_hot_added || qdev_hot_removed; |
| } |
| |
| BusState *qdev_get_parent_bus(DeviceState *dev) |
| { |
| return dev->parent_bus; |
| } |
| |
| void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
| { |
| dev->gpio_in = qemu_extend_irqs(dev->gpio_in, dev->num_gpio_in, handler, |
| dev, n); |
| dev->num_gpio_in += n; |
| } |
| |
| void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) |
| { |
| assert(dev->num_gpio_out == 0); |
| dev->num_gpio_out = n; |
| dev->gpio_out = pins; |
| } |
| |
| qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) |
| { |
| assert(n >= 0 && n < dev->num_gpio_in); |
| return dev->gpio_in[n]; |
| } |
| |
| void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) |
| { |
| assert(n >= 0 && n < dev->num_gpio_out); |
| dev->gpio_out[n] = pin; |
| } |
| |
| BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
| { |
| BusState *bus; |
| |
| QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
| if (strcmp(name, bus->name) == 0) { |
| return bus; |
| } |
| } |
| return NULL; |
| } |
| |
| int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn, |
| qbus_walkerfn *busfn, void *opaque) |
| { |
| BusChild *kid; |
| int err; |
| |
| if (busfn) { |
| err = busfn(bus, opaque); |
| if (err) { |
| return err; |
| } |
| } |
| |
| QTAILQ_FOREACH(kid, &bus->children, sibling) { |
| err = qdev_walk_children(kid->child, devfn, busfn, opaque); |
| if (err < 0) { |
| return err; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn, |
| qbus_walkerfn *busfn, void *opaque) |
| { |
| BusState *bus; |
| int err; |
| |
| if (devfn) { |
| err = devfn(dev, opaque); |
| if (err) { |
| return err; |
| } |
| } |
| |
| QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
| err = qbus_walk_children(bus, devfn, busfn, opaque); |
| if (err < 0) { |
| return err; |
| } |
| } |
| |
| return 0; |
| } |
| |
| DeviceState *qdev_find_recursive(BusState *bus, const char *id) |
| { |
| BusChild *kid; |
| DeviceState *ret; |
| BusState *child; |
| |
| QTAILQ_FOREACH(kid, &bus->children, sibling) { |
| DeviceState *dev = kid->child; |
| |
| if (dev->id && strcmp(dev->id, id) == 0) { |
| return dev; |
| } |
| |
| QLIST_FOREACH(child, &dev->child_bus, sibling) { |
| ret = qdev_find_recursive(child, id); |
| if (ret) { |
| return ret; |
| } |
| } |
| } |
| return NULL; |
| } |
| |
| static void qbus_realize(BusState *bus, DeviceState *parent, const char *name) |
| { |
| const char *typename = object_get_typename(OBJECT(bus)); |
| char *buf; |
| int i,len; |
| |
| bus->parent = parent; |
| |
| if (name) { |
| bus->name = g_strdup(name); |
| } else if (bus->parent && bus->parent->id) { |
| /* parent device has id -> use it for bus name */ |
| len = strlen(bus->parent->id) + 16; |
| buf = g_malloc(len); |
| snprintf(buf, len, "%s.%d", bus->parent->id, bus->parent->num_child_bus); |
| bus->name = buf; |
| } else { |
| /* no id -> use lowercase bus type for bus name */ |
| len = strlen(typename) + 16; |
| buf = g_malloc(len); |
| len = snprintf(buf, len, "%s.%d", typename, |
| bus->parent ? bus->parent->num_child_bus : 0); |
| for (i = 0; i < len; i++) |
| buf[i] = qemu_tolower(buf[i]); |
| bus->name = buf; |
| } |
| |
| if (bus->parent) { |
| QLIST_INSERT_HEAD(&bus->parent->child_bus, bus, sibling); |
| bus->parent->num_child_bus++; |
| object_property_add_child(OBJECT(bus->parent), bus->name, OBJECT(bus), NULL); |
| object_unref(OBJECT(bus)); |
| } else if (bus != sysbus_get_default()) { |
| /* TODO: once all bus devices are qdevified, |
| only reset handler for main_system_bus should be registered here. */ |
| qemu_register_reset(qbus_reset_all_fn, bus); |
| } |
| } |
| |
| static void bus_unparent(Object *obj) |
| { |
| BusState *bus = BUS(obj); |
| BusChild *kid; |
| |
| while ((kid = QTAILQ_FIRST(&bus->children)) != NULL) { |
| DeviceState *dev = kid->child; |
| qdev_free(dev); |
| } |
| if (bus->parent) { |
| QLIST_REMOVE(bus, sibling); |
| bus->parent->num_child_bus--; |
| bus->parent = NULL; |
| } else { |
| assert(bus != sysbus_get_default()); /* main_system_bus is never freed */ |
| qemu_unregister_reset(qbus_reset_all_fn, bus); |
| } |
| } |
| |
| void qbus_create_inplace(void *bus, const char *typename, |
| DeviceState *parent, const char *name) |
| { |
| object_initialize(bus, typename); |
| qbus_realize(bus, parent, name); |
| } |
| |
| BusState *qbus_create(const char *typename, DeviceState *parent, const char *name) |
| { |
| BusState *bus; |
| |
| bus = BUS(object_new(typename)); |
| qbus_realize(bus, parent, name); |
| |
| return bus; |
| } |
| |
| void qbus_free(BusState *bus) |
| { |
| object_unparent(OBJECT(bus)); |
| } |
| |
| static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev) |
| { |
| BusClass *bc = BUS_GET_CLASS(bus); |
| |
| if (bc->get_fw_dev_path) { |
| return bc->get_fw_dev_path(dev); |
| } |
| |
| return NULL; |
| } |
| |
| static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) |
| { |
| int l = 0; |
| |
| if (dev && dev->parent_bus) { |
| char *d; |
| l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); |
| d = bus_get_fw_dev_path(dev->parent_bus, dev); |
| if (d) { |
| l += snprintf(p + l, size - l, "%s", d); |
| g_free(d); |
| } else { |
| l += snprintf(p + l, size - l, "%s", object_get_typename(OBJECT(dev))); |
| } |
| } |
| l += snprintf(p + l , size - l, "/"); |
| |
| return l; |
| } |
| |
| char* qdev_get_fw_dev_path(DeviceState *dev) |
| { |
| char path[128]; |
| int l; |
| |
| l = qdev_get_fw_dev_path_helper(dev, path, 128); |
| |
| path[l-1] = '\0'; |
| |
| return g_strdup(path); |
| } |
| |
| char *qdev_get_dev_path(DeviceState *dev) |
| { |
| BusClass *bc; |
| |
| if (!dev || !dev->parent_bus) { |
| return NULL; |
| } |
| |
| bc = BUS_GET_CLASS(dev->parent_bus); |
| if (bc->get_dev_path) { |
| return bc->get_dev_path(dev); |
| } |
| |
| return NULL; |
| } |
| |
| /** |
| * Legacy property handling |
| */ |
| |
| static void qdev_get_legacy_property(Object *obj, Visitor *v, void *opaque, |
| const char *name, Error **errp) |
| { |
| DeviceState *dev = DEVICE(obj); |
| Property *prop = opaque; |
| |
| char buffer[1024]; |
| char *ptr = buffer; |
| |
| prop->info->print(dev, prop, buffer, sizeof(buffer)); |
| visit_type_str(v, &ptr, name, errp); |
| } |
| |
| static void qdev_set_legacy_property(Object *obj, Visitor *v, void *opaque, |
| const char *name, Error **errp) |
| { |
| DeviceState *dev = DEVICE(obj); |
| Property *prop = opaque; |
| Error *local_err = NULL; |
| char *ptr = NULL; |
| int ret; |
| |
| if (dev->realized) { |
| qdev_prop_set_after_realize(dev, name, errp); |
| return; |
| } |
| |
| visit_type_str(v, &ptr, name, &local_err); |
| if (local_err) { |
| error_propagate(errp, local_err); |
| return; |
| } |
| |
| ret = prop->info->parse(dev, prop, ptr); |
| error_set_from_qdev_prop_error(errp, ret, dev, prop, ptr); |
| g_free(ptr); |
| } |
| |
| /** |
| * @qdev_add_legacy_property - adds a legacy property |
| * |
| * Do not use this is new code! Properties added through this interface will |
| * be given names and types in the "legacy" namespace. |
| * |
| * Legacy properties are string versions of other OOM properties. The format |
| * of the string depends on the property type. |
| */ |
| void qdev_property_add_legacy(DeviceState *dev, Property *prop, |
| Error **errp) |
| { |
| gchar *name, *type; |
| |
| /* Register pointer properties as legacy properties */ |
| if (!prop->info->print && !prop->info->parse && |
| (prop->info->set || prop->info->get)) { |
| return; |
| } |
| |
| name = g_strdup_printf("legacy-%s", prop->name); |
| type = g_strdup_printf("legacy<%s>", |
| prop->info->legacy_name ?: prop->info->name); |
| |
| object_property_add(OBJECT(dev), name, type, |
| prop->info->print ? qdev_get_legacy_property : prop->info->get, |
| prop->info->parse ? qdev_set_legacy_property : prop->info->set, |
| NULL, |
| prop, errp); |
| |
| g_free(type); |
| g_free(name); |
| } |
| |
| /** |
| * @qdev_property_add_static - add a @Property to a device. |
| * |
| * Static properties access data in a struct. The actual type of the |
| * property and the field depends on the property type. |
| */ |
| void qdev_property_add_static(DeviceState *dev, Property *prop, |
| Error **errp) |
| { |
| Error *local_err = NULL; |
| Object *obj = OBJECT(dev); |
| |
| /* |
| * TODO qdev_prop_ptr does not have getters or setters. It must |
| * go now that it can be replaced with links. The test should be |
| * removed along with it: all static properties are read/write. |
| */ |
| if (!prop->info->get && !prop->info->set) { |
| return; |
| } |
| |
| object_property_add(obj, prop->name, prop->info->name, |
| prop->info->get, prop->info->set, |
| prop->info->release, |
| prop, &local_err); |
| |
| if (local_err) { |
| error_propagate(errp, local_err); |
| return; |
| } |
| if (prop->qtype == QTYPE_NONE) { |
| return; |
| } |
| |
| if (prop->qtype == QTYPE_QBOOL) { |
| object_property_set_bool(obj, prop->defval, prop->name, &local_err); |
| } else if (prop->info->enum_table) { |
| object_property_set_str(obj, prop->info->enum_table[prop->defval], |
| prop->name, &local_err); |
| } else if (prop->qtype == QTYPE_QINT) { |
| object_property_set_int(obj, prop->defval, prop->name, &local_err); |
| } |
| assert_no_error(local_err); |
| } |
| |
| static bool device_get_realized(Object *obj, Error **err) |
| { |
| DeviceState *dev = DEVICE(obj); |
| return dev->realized; |
| } |
| |
| static void device_set_realized(Object *obj, bool value, Error **err) |
| { |
| DeviceState *dev = DEVICE(obj); |
| DeviceClass *dc = DEVICE_GET_CLASS(dev); |
| Error *local_err = NULL; |
| |
| if (value && !dev->realized) { |
| if (!obj->parent && local_err == NULL) { |
| static int unattached_count; |
| gchar *name = g_strdup_printf("device[%d]", unattached_count++); |
| |
| object_property_add_child(container_get(qdev_get_machine(), |
| "/unattached"), |
| name, obj, &local_err); |
| g_free(name); |
| } |
| |
| if (dc->realize) { |
| dc->realize(dev, &local_err); |
| } |
| |
| if (qdev_get_vmsd(dev) && local_err == NULL) { |
| vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev, |
| dev->instance_id_alias, |
| dev->alias_required_for_version); |
| } |
| if (dev->hotplugged && local_err == NULL) { |
| device_reset(dev); |
| } |
| } else if (!value && dev->realized) { |
| if (qdev_get_vmsd(dev)) { |
| vmstate_unregister(dev, qdev_get_vmsd(dev), dev); |
| } |
| if (dc->unrealize) { |
| dc->unrealize(dev, &local_err); |
| } |
| } |
| |
| if (local_err != NULL) { |
| error_propagate(err, local_err); |
| return; |
| } |
| |
| dev->realized = value; |
| } |
| |
| static void device_initfn(Object *obj) |
| { |
| DeviceState *dev = DEVICE(obj); |
| ObjectClass *class; |
| Property *prop; |
| Error *err = NULL; |
| |
| if (qdev_hotplug) { |
| dev->hotplugged = 1; |
| qdev_hot_added = true; |
| } |
| |
| dev->instance_id_alias = -1; |
| dev->realized = false; |
| |
| object_property_add_bool(obj, "realized", |
| device_get_realized, device_set_realized, NULL); |
| |
| class = object_get_class(OBJECT(dev)); |
| do { |
| for (prop = DEVICE_CLASS(class)->props; prop && prop->name; prop++) { |
| qdev_property_add_legacy(dev, prop, &err); |
| assert_no_error(err); |
| qdev_property_add_static(dev, prop, &err); |
| assert_no_error(err); |
| } |
| class = object_class_get_parent(class); |
| } while (class != object_class_by_name(TYPE_DEVICE)); |
| qdev_prop_set_globals(dev); |
| |
| object_property_add_link(OBJECT(dev), "parent_bus", TYPE_BUS, |
| (Object **)&dev->parent_bus, &err); |
| assert_no_error(err); |
| } |
| |
| /* Unlink device from bus and free the structure. */ |
| static void device_finalize(Object *obj) |
| { |
| DeviceState *dev = DEVICE(obj); |
| if (dev->opts) { |
| qemu_opts_del(dev->opts); |
| } |
| } |
| |
| static void device_class_base_init(ObjectClass *class, void *data) |
| { |
| DeviceClass *klass = DEVICE_CLASS(class); |
| |
| /* We explicitly look up properties in the superclasses, |
| * so do not propagate them to the subclasses. |
| */ |
| klass->props = NULL; |
| } |
| |
| static void device_unparent(Object *obj) |
| { |
| DeviceState *dev = DEVICE(obj); |
| BusState *bus; |
| QObject *event_data; |
| bool have_realized = dev->realized; |
| |
| while (dev->num_child_bus) { |
| bus = QLIST_FIRST(&dev->child_bus); |
| qbus_free(bus); |
| } |
| if (dev->realized) { |
| object_property_set_bool(obj, false, "realized", NULL); |
| } |
| if (dev->parent_bus) { |
| bus_remove_child(dev->parent_bus, dev); |
| object_unref(OBJECT(dev->parent_bus)); |
| dev->parent_bus = NULL; |
| } |
| |
| /* Only send event if the device had been completely realized */ |
| if (have_realized) { |
| gchar *path = object_get_canonical_path(OBJECT(dev)); |
| |
| if (dev->id) { |
| event_data = qobject_from_jsonf("{ 'device': %s, 'path': %s }", |
| dev->id, path); |
| } else { |
| event_data = qobject_from_jsonf("{ 'path': %s }", path); |
| } |
| monitor_protocol_event(QEVENT_DEVICE_DELETED, event_data); |
| qobject_decref(event_data); |
| g_free(path); |
| } |
| } |
| |
| static void device_class_init(ObjectClass *class, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(class); |
| |
| class->unparent = device_unparent; |
| dc->realize = device_realize; |
| dc->unrealize = device_unrealize; |
| } |
| |
| void device_reset(DeviceState *dev) |
| { |
| DeviceClass *klass = DEVICE_GET_CLASS(dev); |
| |
| if (klass->reset) { |
| klass->reset(dev); |
| } |
| } |
| |
| Object *qdev_get_machine(void) |
| { |
| static Object *dev; |
| |
| if (dev == NULL) { |
| dev = container_get(object_get_root(), "/machine"); |
| } |
| |
| return dev; |
| } |
| |
| static const TypeInfo device_type_info = { |
| .name = TYPE_DEVICE, |
| .parent = TYPE_OBJECT, |
| .instance_size = sizeof(DeviceState), |
| .instance_init = device_initfn, |
| .instance_finalize = device_finalize, |
| .class_base_init = device_class_base_init, |
| .class_init = device_class_init, |
| .abstract = true, |
| .class_size = sizeof(DeviceClass), |
| }; |
| |
| static void qbus_initfn(Object *obj) |
| { |
| BusState *bus = BUS(obj); |
| |
| QTAILQ_INIT(&bus->children); |
| } |
| |
| static void bus_class_init(ObjectClass *class, void *data) |
| { |
| class->unparent = bus_unparent; |
| } |
| |
| static void qbus_finalize(Object *obj) |
| { |
| BusState *bus = BUS(obj); |
| |
| g_free((char *)bus->name); |
| } |
| |
| static const TypeInfo bus_info = { |
| .name = TYPE_BUS, |
| .parent = TYPE_OBJECT, |
| .instance_size = sizeof(BusState), |
| .abstract = true, |
| .class_size = sizeof(BusClass), |
| .instance_init = qbus_initfn, |
| .instance_finalize = qbus_finalize, |
| .class_init = bus_class_init, |
| }; |
| |
| static void qdev_register_types(void) |
| { |
| type_register_static(&bus_info); |
| type_register_static(&device_type_info); |
| } |
| |
| type_init(qdev_register_types) |