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/*
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* Dynamic device configuration and creation.
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*
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* Copyright (c) 2009 CodeSourcery
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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/* The theory here is that it should be possible to create a machine without
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knowledge of specific devices. Historically board init routines have
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passed a bunch of arguments to each device, requiring the board know
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exactly which device it is dealing with. This file provides an abstract
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API for device configuration and initialization. Devices will generally
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inherit from a particular bus (e.g. PCI or I2C) rather than
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this API directly. */
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#include "hw/qdev.h" |
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#include "sysemu/sysemu.h" |
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#include "qapi/error.h" |
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#include "qapi/qmp/qerror.h" |
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#include "qapi/visitor.h" |
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#include "qapi/qmp/qjson.h" |
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#include "monitor/monitor.h" |
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int qdev_hotplug = 0; |
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static bool qdev_hot_added = false; |
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static bool qdev_hot_removed = false; |
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const VMStateDescription *qdev_get_vmsd(DeviceState *dev)
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{ |
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DeviceClass *dc = DEVICE_GET_CLASS(dev); |
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return dc->vmsd;
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} |
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const char *qdev_fw_name(DeviceState *dev) |
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{ |
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DeviceClass *dc = DEVICE_GET_CLASS(dev); |
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if (dc->fw_name) {
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return dc->fw_name;
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} |
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return object_get_typename(OBJECT(dev));
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} |
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static void qdev_property_add_legacy(DeviceState *dev, Property *prop, |
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Error **errp); |
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static void bus_remove_child(BusState *bus, DeviceState *child) |
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{ |
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BusChild *kid; |
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QTAILQ_FOREACH(kid, &bus->children, sibling) { |
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if (kid->child == child) {
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char name[32]; |
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snprintf(name, sizeof(name), "child[%d]", kid->index); |
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QTAILQ_REMOVE(&bus->children, kid, sibling); |
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/* This gives back ownership of kid->child back to us. */
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object_property_del(OBJECT(bus), name, NULL);
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object_unref(OBJECT(kid->child)); |
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g_free(kid); |
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return;
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} |
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} |
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} |
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static void bus_add_child(BusState *bus, DeviceState *child) |
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{ |
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char name[32]; |
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BusChild *kid = g_malloc0(sizeof(*kid));
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if (qdev_hotplug) {
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assert(bus->allow_hotplug); |
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} |
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kid->index = bus->max_index++; |
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kid->child = child; |
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object_ref(OBJECT(kid->child)); |
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QTAILQ_INSERT_HEAD(&bus->children, kid, sibling); |
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/* This transfers ownership of kid->child to the property. */
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snprintf(name, sizeof(name), "child[%d]", kid->index); |
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object_property_add_link(OBJECT(bus), name, |
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object_get_typename(OBJECT(child)), |
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(Object **)&kid->child, |
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NULL);
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} |
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void qdev_set_parent_bus(DeviceState *dev, BusState *bus)
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{ |
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dev->parent_bus = bus; |
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object_ref(OBJECT(bus)); |
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bus_add_child(bus, dev); |
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} |
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/* Create a new device. This only initializes the device state structure
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and allows properties to be set. qdev_init should be called to
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initialize the actual device emulation. */
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DeviceState *qdev_create(BusState *bus, const char *name) |
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{ |
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DeviceState *dev; |
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dev = qdev_try_create(bus, name); |
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if (!dev) {
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if (bus) {
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error_report("Unknown device '%s' for bus '%s'", name,
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object_get_typename(OBJECT(bus))); |
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} else {
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error_report("Unknown device '%s' for default sysbus", name);
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} |
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abort(); |
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} |
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return dev;
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} |
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DeviceState *qdev_try_create(BusState *bus, const char *type) |
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{ |
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DeviceState *dev; |
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if (object_class_by_name(type) == NULL) { |
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return NULL; |
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} |
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dev = DEVICE(object_new(type)); |
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if (!dev) {
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return NULL; |
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} |
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if (!bus) {
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bus = sysbus_get_default(); |
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} |
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qdev_set_parent_bus(dev, bus); |
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object_unref(OBJECT(dev)); |
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return dev;
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} |
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/* Initialize a device. Device properties should be set before calling
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this function. IRQs and MMIO regions should be connected/mapped after
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calling this function.
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On failure, destroy the device and return negative value.
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Return 0 on success. */
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int qdev_init(DeviceState *dev)
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{ |
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Error *local_err = NULL;
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assert(!dev->realized); |
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object_property_set_bool(OBJECT(dev), true, "realized", &local_err); |
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if (local_err != NULL) { |
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error_free(local_err); |
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qdev_free(dev); |
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return -1; |
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} |
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return 0; |
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} |
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static void device_realize(DeviceState *dev, Error **err) |
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{ |
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DeviceClass *dc = DEVICE_GET_CLASS(dev); |
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if (dc->init) {
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int rc = dc->init(dev);
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if (rc < 0) { |
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error_setg(err, "Device initialization failed.");
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return;
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} |
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} |
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} |
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void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, |
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int required_for_version)
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{ |
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assert(!dev->realized); |
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dev->instance_id_alias = alias_id; |
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dev->alias_required_for_version = required_for_version; |
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} |
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void qdev_unplug(DeviceState *dev, Error **errp)
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{ |
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DeviceClass *dc = DEVICE_GET_CLASS(dev); |
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if (!dev->parent_bus->allow_hotplug) {
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error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); |
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return;
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} |
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assert(dc->unplug != NULL);
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qdev_hot_removed = true;
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if (dc->unplug(dev) < 0) { |
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error_set(errp, QERR_UNDEFINED_ERROR); |
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return;
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} |
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} |
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static int qdev_reset_one(DeviceState *dev, void *opaque) |
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{ |
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device_reset(dev); |
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return 0; |
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} |
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static int qbus_reset_one(BusState *bus, void *opaque) |
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{ |
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BusClass *bc = BUS_GET_CLASS(bus); |
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if (bc->reset) {
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return bc->reset(bus);
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} |
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return 0; |
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} |
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void qdev_reset_all(DeviceState *dev)
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{ |
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qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL);
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} |
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void qbus_reset_all(BusState *bus)
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{ |
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qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL);
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} |
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void qbus_reset_all_fn(void *opaque) |
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{ |
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BusState *bus = opaque; |
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qbus_reset_all(bus); |
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} |
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/* can be used as ->unplug() callback for the simple cases */
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int qdev_simple_unplug_cb(DeviceState *dev)
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{ |
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/* just zap it */
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qdev_free(dev); |
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return 0; |
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} |
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/* Like qdev_init(), but terminate program via error_report() instead of
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returning an error value. This is okay during machine creation.
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Don't use for hotplug, because there callers need to recover from
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failure. Exception: if you know the device's init() callback can't
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fail, then qdev_init_nofail() can't fail either, and is therefore
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usable even then. But relying on the device implementation that
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way is somewhat unclean, and best avoided. */
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void qdev_init_nofail(DeviceState *dev)
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{ |
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const char *typename = object_get_typename(OBJECT(dev)); |
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if (qdev_init(dev) < 0) { |
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error_report("Initialization of device %s failed", typename);
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exit(1);
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} |
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} |
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/* Unlink device from bus and free the structure. */
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void qdev_free(DeviceState *dev)
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{ |
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object_unparent(OBJECT(dev)); |
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} |
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void qdev_machine_creation_done(void) |
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{ |
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/*
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* ok, initial machine setup is done, starting from now we can
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* only create hotpluggable devices
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*/
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qdev_hotplug = 1;
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} |
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bool qdev_machine_modified(void) |
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{ |
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return qdev_hot_added || qdev_hot_removed;
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} |
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BusState *qdev_get_parent_bus(DeviceState *dev) |
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{ |
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return dev->parent_bus;
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} |
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void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
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{ |
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dev->gpio_in = qemu_extend_irqs(dev->gpio_in, dev->num_gpio_in, handler, |
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dev, n); |
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dev->num_gpio_in += n; |
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} |
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void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) |
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{ |
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assert(dev->num_gpio_out == 0);
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dev->num_gpio_out = n; |
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dev->gpio_out = pins; |
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} |
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qemu_irq qdev_get_gpio_in(DeviceState *dev, int n)
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{ |
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assert(n >= 0 && n < dev->num_gpio_in);
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return dev->gpio_in[n];
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} |
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void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) |
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{ |
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assert(n >= 0 && n < dev->num_gpio_out);
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dev->gpio_out[n] = pin; |
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} |
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BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
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{ |
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BusState *bus; |
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QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
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if (strcmp(name, bus->name) == 0) { |
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return bus;
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} |
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} |
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return NULL; |
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} |
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int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn,
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qbus_walkerfn *busfn, void *opaque)
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{ |
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BusChild *kid; |
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int err;
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if (busfn) {
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err = busfn(bus, opaque); |
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if (err) {
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return err;
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} |
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} |
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QTAILQ_FOREACH(kid, &bus->children, sibling) { |
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err = qdev_walk_children(kid->child, devfn, busfn, opaque); |
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if (err < 0) { |
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return err;
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} |
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} |
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return 0; |
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} |
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int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn,
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qbus_walkerfn *busfn, void *opaque)
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{ |
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BusState *bus; |
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int err;
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if (devfn) {
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err = devfn(dev, opaque); |
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if (err) {
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return err;
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} |
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} |
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QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
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err = qbus_walk_children(bus, devfn, busfn, opaque); |
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if (err < 0) { |
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return err;
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} |
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} |
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return 0; |
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} |
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DeviceState *qdev_find_recursive(BusState *bus, const char *id) |
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{ |
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BusChild *kid; |
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DeviceState *ret; |
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BusState *child; |
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QTAILQ_FOREACH(kid, &bus->children, sibling) { |
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DeviceState *dev = kid->child; |
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if (dev->id && strcmp(dev->id, id) == 0) { |
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return dev;
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} |
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QLIST_FOREACH(child, &dev->child_bus, sibling) { |
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ret = qdev_find_recursive(child, id); |
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if (ret) {
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return ret;
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} |
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} |
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} |
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return NULL; |
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} |
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static void qbus_realize(BusState *bus, DeviceState *parent, const char *name) |
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{ |
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const char *typename = object_get_typename(OBJECT(bus)); |
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char *buf;
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int i,len;
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bus->parent = parent; |
408 |
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if (name) {
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bus->name = g_strdup(name); |
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} else if (bus->parent && bus->parent->id) { |
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/* parent device has id -> use it for bus name */
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len = strlen(bus->parent->id) + 16;
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buf = g_malloc(len); |
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snprintf(buf, len, "%s.%d", bus->parent->id, bus->parent->num_child_bus);
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bus->name = buf; |
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} else {
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/* no id -> use lowercase bus type for bus name */
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len = strlen(typename) + 16;
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buf = g_malloc(len); |
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len = snprintf(buf, len, "%s.%d", typename,
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bus->parent ? bus->parent->num_child_bus : 0);
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for (i = 0; i < len; i++) |
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buf[i] = qemu_tolower(buf[i]); |
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bus->name = buf; |
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} |
427 |
|
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if (bus->parent) {
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QLIST_INSERT_HEAD(&bus->parent->child_bus, bus, sibling); |
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bus->parent->num_child_bus++; |
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object_property_add_child(OBJECT(bus->parent), bus->name, OBJECT(bus), NULL);
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object_unref(OBJECT(bus)); |
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} else if (bus != sysbus_get_default()) { |
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/* TODO: once all bus devices are qdevified,
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only reset handler for main_system_bus should be registered here. */
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qemu_register_reset(qbus_reset_all_fn, bus); |
437 |
} |
438 |
} |
439 |
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static void bus_unparent(Object *obj) |
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{ |
442 |
BusState *bus = BUS(obj); |
443 |
BusChild *kid; |
444 |
|
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while ((kid = QTAILQ_FIRST(&bus->children)) != NULL) { |
446 |
DeviceState *dev = kid->child; |
447 |
qdev_free(dev); |
448 |
} |
449 |
if (bus->parent) {
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QLIST_REMOVE(bus, sibling); |
451 |
bus->parent->num_child_bus--; |
452 |
bus->parent = NULL;
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} else {
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assert(bus != sysbus_get_default()); /* main_system_bus is never freed */
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qemu_unregister_reset(qbus_reset_all_fn, bus); |
456 |
} |
457 |
} |
458 |
|
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void qbus_create_inplace(void *bus, const char *typename, |
460 |
DeviceState *parent, const char *name) |
461 |
{ |
462 |
object_initialize(bus, typename); |
463 |
qbus_realize(bus, parent, name); |
464 |
} |
465 |
|
466 |
BusState *qbus_create(const char *typename, DeviceState *parent, const char *name) |
467 |
{ |
468 |
BusState *bus; |
469 |
|
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bus = BUS(object_new(typename)); |
471 |
qbus_realize(bus, parent, name); |
472 |
|
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return bus;
|
474 |
} |
475 |
|
476 |
void qbus_free(BusState *bus)
|
477 |
{ |
478 |
object_unparent(OBJECT(bus)); |
479 |
} |
480 |
|
481 |
static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev) |
482 |
{ |
483 |
BusClass *bc = BUS_GET_CLASS(bus); |
484 |
|
485 |
if (bc->get_fw_dev_path) {
|
486 |
return bc->get_fw_dev_path(dev);
|
487 |
} |
488 |
|
489 |
return NULL; |
490 |
} |
491 |
|
492 |
static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) |
493 |
{ |
494 |
int l = 0; |
495 |
|
496 |
if (dev && dev->parent_bus) {
|
497 |
char *d;
|
498 |
l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); |
499 |
d = bus_get_fw_dev_path(dev->parent_bus, dev); |
500 |
if (d) {
|
501 |
l += snprintf(p + l, size - l, "%s", d);
|
502 |
g_free(d); |
503 |
} else {
|
504 |
l += snprintf(p + l, size - l, "%s", object_get_typename(OBJECT(dev)));
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505 |
} |
506 |
} |
507 |
l += snprintf(p + l , size - l, "/");
|
508 |
|
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return l;
|
510 |
} |
511 |
|
512 |
char* qdev_get_fw_dev_path(DeviceState *dev)
|
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{ |
514 |
char path[128]; |
515 |
int l;
|
516 |
|
517 |
l = qdev_get_fw_dev_path_helper(dev, path, 128);
|
518 |
|
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path[l-1] = '\0'; |
520 |
|
521 |
return g_strdup(path);
|
522 |
} |
523 |
|
524 |
char *qdev_get_dev_path(DeviceState *dev)
|
525 |
{ |
526 |
BusClass *bc; |
527 |
|
528 |
if (!dev || !dev->parent_bus) {
|
529 |
return NULL; |
530 |
} |
531 |
|
532 |
bc = BUS_GET_CLASS(dev->parent_bus); |
533 |
if (bc->get_dev_path) {
|
534 |
return bc->get_dev_path(dev);
|
535 |
} |
536 |
|
537 |
return NULL; |
538 |
} |
539 |
|
540 |
/**
|
541 |
* Legacy property handling
|
542 |
*/
|
543 |
|
544 |
static void qdev_get_legacy_property(Object *obj, Visitor *v, void *opaque, |
545 |
const char *name, Error **errp) |
546 |
{ |
547 |
DeviceState *dev = DEVICE(obj); |
548 |
Property *prop = opaque; |
549 |
|
550 |
char buffer[1024]; |
551 |
char *ptr = buffer;
|
552 |
|
553 |
prop->info->print(dev, prop, buffer, sizeof(buffer));
|
554 |
visit_type_str(v, &ptr, name, errp); |
555 |
} |
556 |
|
557 |
static void qdev_set_legacy_property(Object *obj, Visitor *v, void *opaque, |
558 |
const char *name, Error **errp) |
559 |
{ |
560 |
DeviceState *dev = DEVICE(obj); |
561 |
Property *prop = opaque; |
562 |
Error *local_err = NULL;
|
563 |
char *ptr = NULL; |
564 |
int ret;
|
565 |
|
566 |
if (dev->realized) {
|
567 |
qdev_prop_set_after_realize(dev, name, errp); |
568 |
return;
|
569 |
} |
570 |
|
571 |
visit_type_str(v, &ptr, name, &local_err); |
572 |
if (local_err) {
|
573 |
error_propagate(errp, local_err); |
574 |
return;
|
575 |
} |
576 |
|
577 |
ret = prop->info->parse(dev, prop, ptr); |
578 |
error_set_from_qdev_prop_error(errp, ret, dev, prop, ptr); |
579 |
g_free(ptr); |
580 |
} |
581 |
|
582 |
/**
|
583 |
* @qdev_add_legacy_property - adds a legacy property
|
584 |
*
|
585 |
* Do not use this is new code! Properties added through this interface will
|
586 |
* be given names and types in the "legacy" namespace.
|
587 |
*
|
588 |
* Legacy properties are string versions of other OOM properties. The format
|
589 |
* of the string depends on the property type.
|
590 |
*/
|
591 |
void qdev_property_add_legacy(DeviceState *dev, Property *prop,
|
592 |
Error **errp) |
593 |
{ |
594 |
gchar *name, *type; |
595 |
|
596 |
/* Register pointer properties as legacy properties */
|
597 |
if (!prop->info->print && !prop->info->parse &&
|
598 |
(prop->info->set || prop->info->get)) { |
599 |
return;
|
600 |
} |
601 |
|
602 |
name = g_strdup_printf("legacy-%s", prop->name);
|
603 |
type = g_strdup_printf("legacy<%s>",
|
604 |
prop->info->legacy_name ?: prop->info->name); |
605 |
|
606 |
object_property_add(OBJECT(dev), name, type, |
607 |
prop->info->print ? qdev_get_legacy_property : prop->info->get, |
608 |
prop->info->parse ? qdev_set_legacy_property : prop->info->set, |
609 |
NULL,
|
610 |
prop, errp); |
611 |
|
612 |
g_free(type); |
613 |
g_free(name); |
614 |
} |
615 |
|
616 |
/**
|
617 |
* @qdev_property_add_static - add a @Property to a device.
|
618 |
*
|
619 |
* Static properties access data in a struct. The actual type of the
|
620 |
* property and the field depends on the property type.
|
621 |
*/
|
622 |
void qdev_property_add_static(DeviceState *dev, Property *prop,
|
623 |
Error **errp) |
624 |
{ |
625 |
Error *local_err = NULL;
|
626 |
Object *obj = OBJECT(dev); |
627 |
|
628 |
/*
|
629 |
* TODO qdev_prop_ptr does not have getters or setters. It must
|
630 |
* go now that it can be replaced with links. The test should be
|
631 |
* removed along with it: all static properties are read/write.
|
632 |
*/
|
633 |
if (!prop->info->get && !prop->info->set) {
|
634 |
return;
|
635 |
} |
636 |
|
637 |
object_property_add(obj, prop->name, prop->info->name, |
638 |
prop->info->get, prop->info->set, |
639 |
prop->info->release, |
640 |
prop, &local_err); |
641 |
|
642 |
if (local_err) {
|
643 |
error_propagate(errp, local_err); |
644 |
return;
|
645 |
} |
646 |
if (prop->qtype == QTYPE_NONE) {
|
647 |
return;
|
648 |
} |
649 |
|
650 |
if (prop->qtype == QTYPE_QBOOL) {
|
651 |
object_property_set_bool(obj, prop->defval, prop->name, &local_err); |
652 |
} else if (prop->info->enum_table) { |
653 |
object_property_set_str(obj, prop->info->enum_table[prop->defval], |
654 |
prop->name, &local_err); |
655 |
} else if (prop->qtype == QTYPE_QINT) { |
656 |
object_property_set_int(obj, prop->defval, prop->name, &local_err); |
657 |
} |
658 |
assert_no_error(local_err); |
659 |
} |
660 |
|
661 |
static bool device_get_realized(Object *obj, Error **err) |
662 |
{ |
663 |
DeviceState *dev = DEVICE(obj); |
664 |
return dev->realized;
|
665 |
} |
666 |
|
667 |
static void device_set_realized(Object *obj, bool value, Error **err) |
668 |
{ |
669 |
DeviceState *dev = DEVICE(obj); |
670 |
DeviceClass *dc = DEVICE_GET_CLASS(dev); |
671 |
Error *local_err = NULL;
|
672 |
|
673 |
if (value && !dev->realized) {
|
674 |
if (dc->realize) {
|
675 |
dc->realize(dev, &local_err); |
676 |
} |
677 |
|
678 |
if (!obj->parent && local_err == NULL) { |
679 |
static int unattached_count; |
680 |
gchar *name = g_strdup_printf("device[%d]", unattached_count++);
|
681 |
|
682 |
object_property_add_child(container_get(qdev_get_machine(), |
683 |
"/unattached"),
|
684 |
name, obj, &local_err); |
685 |
g_free(name); |
686 |
} |
687 |
|
688 |
if (qdev_get_vmsd(dev) && local_err == NULL) { |
689 |
vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev,
|
690 |
dev->instance_id_alias, |
691 |
dev->alias_required_for_version); |
692 |
} |
693 |
if (dev->hotplugged && local_err == NULL) { |
694 |
device_reset(dev); |
695 |
} |
696 |
} else if (!value && dev->realized) { |
697 |
if (dc->unrealize) {
|
698 |
dc->unrealize(dev, &local_err); |
699 |
} |
700 |
} |
701 |
|
702 |
if (local_err != NULL) { |
703 |
error_propagate(err, local_err); |
704 |
return;
|
705 |
} |
706 |
|
707 |
dev->realized = value; |
708 |
} |
709 |
|
710 |
static void device_initfn(Object *obj) |
711 |
{ |
712 |
DeviceState *dev = DEVICE(obj); |
713 |
ObjectClass *class; |
714 |
Property *prop; |
715 |
Error *err = NULL;
|
716 |
|
717 |
if (qdev_hotplug) {
|
718 |
dev->hotplugged = 1;
|
719 |
qdev_hot_added = true;
|
720 |
} |
721 |
|
722 |
dev->instance_id_alias = -1;
|
723 |
dev->realized = false;
|
724 |
|
725 |
object_property_add_bool(obj, "realized",
|
726 |
device_get_realized, device_set_realized, NULL);
|
727 |
|
728 |
class = object_get_class(OBJECT(dev)); |
729 |
do {
|
730 |
for (prop = DEVICE_CLASS(class)->props; prop && prop->name; prop++) {
|
731 |
qdev_property_add_legacy(dev, prop, &err); |
732 |
assert_no_error(err); |
733 |
qdev_property_add_static(dev, prop, &err); |
734 |
assert_no_error(err); |
735 |
} |
736 |
class = object_class_get_parent(class); |
737 |
} while (class != object_class_by_name(TYPE_DEVICE));
|
738 |
qdev_prop_set_globals(dev); |
739 |
|
740 |
object_property_add_link(OBJECT(dev), "parent_bus", TYPE_BUS,
|
741 |
(Object **)&dev->parent_bus, &err); |
742 |
assert_no_error(err); |
743 |
} |
744 |
|
745 |
/* Unlink device from bus and free the structure. */
|
746 |
static void device_finalize(Object *obj) |
747 |
{ |
748 |
DeviceState *dev = DEVICE(obj); |
749 |
if (dev->opts) {
|
750 |
qemu_opts_del(dev->opts); |
751 |
} |
752 |
} |
753 |
|
754 |
static void device_class_base_init(ObjectClass *class, void *data) |
755 |
{ |
756 |
DeviceClass *klass = DEVICE_CLASS(class); |
757 |
|
758 |
/* We explicitly look up properties in the superclasses,
|
759 |
* so do not propagate them to the subclasses.
|
760 |
*/
|
761 |
klass->props = NULL;
|
762 |
} |
763 |
|
764 |
static void device_unparent(Object *obj) |
765 |
{ |
766 |
DeviceState *dev = DEVICE(obj); |
767 |
DeviceClass *dc = DEVICE_GET_CLASS(dev); |
768 |
BusState *bus; |
769 |
QObject *event_data; |
770 |
bool have_realized = dev->realized;
|
771 |
|
772 |
while (dev->num_child_bus) {
|
773 |
bus = QLIST_FIRST(&dev->child_bus); |
774 |
qbus_free(bus); |
775 |
} |
776 |
if (dev->realized) {
|
777 |
if (qdev_get_vmsd(dev)) {
|
778 |
vmstate_unregister(dev, qdev_get_vmsd(dev), dev); |
779 |
} |
780 |
if (dc->exit) {
|
781 |
dc->exit(dev); |
782 |
} |
783 |
} |
784 |
if (dev->parent_bus) {
|
785 |
bus_remove_child(dev->parent_bus, dev); |
786 |
object_unref(OBJECT(dev->parent_bus)); |
787 |
dev->parent_bus = NULL;
|
788 |
} |
789 |
|
790 |
/* Only send event if the device had been completely realized */
|
791 |
if (have_realized) {
|
792 |
gchar *path = object_get_canonical_path(OBJECT(dev)); |
793 |
|
794 |
if (dev->id) {
|
795 |
event_data = qobject_from_jsonf("{ 'device': %s, 'path': %s }",
|
796 |
dev->id, path); |
797 |
} else {
|
798 |
event_data = qobject_from_jsonf("{ 'path': %s }", path);
|
799 |
} |
800 |
monitor_protocol_event(QEVENT_DEVICE_DELETED, event_data); |
801 |
qobject_decref(event_data); |
802 |
g_free(path); |
803 |
} |
804 |
} |
805 |
|
806 |
static void device_class_init(ObjectClass *class, void *data) |
807 |
{ |
808 |
DeviceClass *dc = DEVICE_CLASS(class); |
809 |
|
810 |
class->unparent = device_unparent; |
811 |
dc->realize = device_realize; |
812 |
} |
813 |
|
814 |
void device_reset(DeviceState *dev)
|
815 |
{ |
816 |
DeviceClass *klass = DEVICE_GET_CLASS(dev); |
817 |
|
818 |
if (klass->reset) {
|
819 |
klass->reset(dev); |
820 |
} |
821 |
} |
822 |
|
823 |
Object *qdev_get_machine(void)
|
824 |
{ |
825 |
static Object *dev;
|
826 |
|
827 |
if (dev == NULL) { |
828 |
dev = container_get(object_get_root(), "/machine");
|
829 |
} |
830 |
|
831 |
return dev;
|
832 |
} |
833 |
|
834 |
static const TypeInfo device_type_info = { |
835 |
.name = TYPE_DEVICE, |
836 |
.parent = TYPE_OBJECT, |
837 |
.instance_size = sizeof(DeviceState),
|
838 |
.instance_init = device_initfn, |
839 |
.instance_finalize = device_finalize, |
840 |
.class_base_init = device_class_base_init, |
841 |
.class_init = device_class_init, |
842 |
.abstract = true,
|
843 |
.class_size = sizeof(DeviceClass),
|
844 |
}; |
845 |
|
846 |
static void qbus_initfn(Object *obj) |
847 |
{ |
848 |
BusState *bus = BUS(obj); |
849 |
|
850 |
QTAILQ_INIT(&bus->children); |
851 |
} |
852 |
|
853 |
static void bus_class_init(ObjectClass *class, void *data) |
854 |
{ |
855 |
class->unparent = bus_unparent; |
856 |
} |
857 |
|
858 |
static void qbus_finalize(Object *obj) |
859 |
{ |
860 |
BusState *bus = BUS(obj); |
861 |
|
862 |
g_free((char *)bus->name);
|
863 |
} |
864 |
|
865 |
static const TypeInfo bus_info = { |
866 |
.name = TYPE_BUS, |
867 |
.parent = TYPE_OBJECT, |
868 |
.instance_size = sizeof(BusState),
|
869 |
.abstract = true,
|
870 |
.class_size = sizeof(BusClass),
|
871 |
.instance_init = qbus_initfn, |
872 |
.instance_finalize = qbus_finalize, |
873 |
.class_init = bus_class_init, |
874 |
}; |
875 |
|
876 |
static void qdev_register_types(void) |
877 |
{ |
878 |
type_register_static(&bus_info); |
879 |
type_register_static(&device_type_info); |
880 |
} |
881 |
|
882 |
type_init(qdev_register_types) |