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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 "net.h" |
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#include "qdev.h" |
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#include "sysemu.h" |
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#include "error.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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/* Register a new device type. */
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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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bool qdev_exists(const char *name) |
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{ |
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return !!object_class_by_name(name);
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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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object_property_del(OBJECT(bus), name, NULL);
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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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QTAILQ_INSERT_HEAD(&bus->children, kid, sibling); |
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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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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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hw_error("Unknown device '%s' for bus '%s'\n", name,
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object_get_typename(OBJECT(bus))); |
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} else {
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hw_error("Unknown device '%s' for default sysbus\n", name);
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} |
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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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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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DeviceClass *dc = DEVICE_GET_CLASS(dev); |
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int rc;
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assert(dev->state == DEV_STATE_CREATED); |
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rc = dc->init(dev); |
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if (rc < 0) { |
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qdev_free(dev); |
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return rc;
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} |
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if (!OBJECT(dev)->parent) {
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static int unattached_count = 0; |
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gchar *name = g_strdup_printf("device[%d]", unattached_count++);
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object_property_add_child(container_get(qdev_get_machine(), |
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"/unattached"),
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name, OBJECT(dev), NULL);
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g_free(name); |
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} |
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if (qdev_get_vmsd(dev)) {
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vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev,
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dev->instance_id_alias, |
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dev->alias_required_for_version); |
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} |
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dev->state = DEV_STATE_INITIALIZED; |
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if (dev->hotplugged) {
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device_reset(dev); |
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} |
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return 0; |
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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->state == DEV_STATE_CREATED); |
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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_fn(void *opaque) |
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{ |
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BusState *bus = opaque; |
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qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL);
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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_delete(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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assert(dev->num_gpio_in == 0);
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dev->num_gpio_in = n; |
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dev->gpio_in = qemu_allocate_irqs(handler, dev, 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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void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
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{ |
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qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a);
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if (nd->netdev)
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qdev_prop_set_netdev(dev, "netdev", nd->netdev);
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if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
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object_property_find(OBJECT(dev), "vectors", NULL)) { |
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qdev_prop_set_uint32(dev, "vectors", nd->nvectors);
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} |
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nd->instantiated = 1;
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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); |
380 |
if (err < 0) { |
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return err;
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} |
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} |
384 |
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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; |
396 |
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if (dev->id && strcmp(dev->id, id) == 0) { |
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return dev;
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} |
400 |
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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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} |
410 |
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static void qbus_realize(BusState *bus) |
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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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if (bus->name) {
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/* use supplied name */
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} else if (bus->parent && bus->parent->id) { |
420 |
/* 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); |
429 |
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++) |
432 |
buf[i] = qemu_tolower(buf[i]); |
433 |
bus->name = buf; |
434 |
} |
435 |
|
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if (bus->parent) {
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QLIST_INSERT_HEAD(&bus->parent->child_bus, bus, sibling); |
438 |
bus->parent->num_child_bus++; |
439 |
object_property_add_child(OBJECT(bus->parent), bus->name, OBJECT(bus), NULL);
|
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} else if (bus != sysbus_get_default()) { |
441 |
/* 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); |
444 |
} |
445 |
} |
446 |
|
447 |
void qbus_create_inplace(BusState *bus, const char *typename, |
448 |
DeviceState *parent, const char *name) |
449 |
{ |
450 |
object_initialize(bus, typename); |
451 |
|
452 |
bus->parent = parent; |
453 |
bus->name = name ? g_strdup(name) : NULL;
|
454 |
qbus_realize(bus); |
455 |
} |
456 |
|
457 |
BusState *qbus_create(const char *typename, DeviceState *parent, const char *name) |
458 |
{ |
459 |
BusState *bus; |
460 |
|
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bus = BUS(object_new(typename)); |
462 |
bus->qom_allocated = true;
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463 |
|
464 |
bus->parent = parent; |
465 |
bus->name = name ? g_strdup(name) : NULL;
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466 |
qbus_realize(bus); |
467 |
|
468 |
return bus;
|
469 |
} |
470 |
|
471 |
void qbus_free(BusState *bus)
|
472 |
{ |
473 |
if (bus->qom_allocated) {
|
474 |
object_delete(OBJECT(bus)); |
475 |
} else {
|
476 |
object_finalize(OBJECT(bus)); |
477 |
if (bus->glib_allocated) {
|
478 |
g_free(bus); |
479 |
} |
480 |
} |
481 |
} |
482 |
|
483 |
static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev) |
484 |
{ |
485 |
BusClass *bc = BUS_GET_CLASS(bus); |
486 |
|
487 |
if (bc->get_fw_dev_path) {
|
488 |
return bc->get_fw_dev_path(dev);
|
489 |
} |
490 |
|
491 |
return NULL; |
492 |
} |
493 |
|
494 |
static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) |
495 |
{ |
496 |
int l = 0; |
497 |
|
498 |
if (dev && dev->parent_bus) {
|
499 |
char *d;
|
500 |
l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); |
501 |
d = bus_get_fw_dev_path(dev->parent_bus, dev); |
502 |
if (d) {
|
503 |
l += snprintf(p + l, size - l, "%s", d);
|
504 |
g_free(d); |
505 |
} else {
|
506 |
l += snprintf(p + l, size - l, "%s", object_get_typename(OBJECT(dev)));
|
507 |
} |
508 |
} |
509 |
l += snprintf(p + l , size - l, "/");
|
510 |
|
511 |
return l;
|
512 |
} |
513 |
|
514 |
char* qdev_get_fw_dev_path(DeviceState *dev)
|
515 |
{ |
516 |
char path[128]; |
517 |
int l;
|
518 |
|
519 |
l = qdev_get_fw_dev_path_helper(dev, path, 128);
|
520 |
|
521 |
path[l-1] = '\0'; |
522 |
|
523 |
return g_strdup(path);
|
524 |
} |
525 |
|
526 |
char *qdev_get_dev_path(DeviceState *dev)
|
527 |
{ |
528 |
BusClass *bc; |
529 |
|
530 |
if (!dev || !dev->parent_bus) {
|
531 |
return NULL; |
532 |
} |
533 |
|
534 |
bc = BUS_GET_CLASS(dev->parent_bus); |
535 |
if (bc->get_dev_path) {
|
536 |
return bc->get_dev_path(dev);
|
537 |
} |
538 |
|
539 |
return NULL; |
540 |
} |
541 |
|
542 |
/**
|
543 |
* Legacy property handling
|
544 |
*/
|
545 |
|
546 |
static void qdev_get_legacy_property(Object *obj, Visitor *v, void *opaque, |
547 |
const char *name, Error **errp) |
548 |
{ |
549 |
DeviceState *dev = DEVICE(obj); |
550 |
Property *prop = opaque; |
551 |
|
552 |
char buffer[1024]; |
553 |
char *ptr = buffer;
|
554 |
|
555 |
prop->info->print(dev, prop, buffer, sizeof(buffer));
|
556 |
visit_type_str(v, &ptr, name, errp); |
557 |
} |
558 |
|
559 |
static void qdev_set_legacy_property(Object *obj, Visitor *v, void *opaque, |
560 |
const char *name, Error **errp) |
561 |
{ |
562 |
DeviceState *dev = DEVICE(obj); |
563 |
Property *prop = opaque; |
564 |
Error *local_err = NULL;
|
565 |
char *ptr = NULL; |
566 |
int ret;
|
567 |
|
568 |
if (dev->state != DEV_STATE_CREATED) {
|
569 |
error_set(errp, QERR_PERMISSION_DENIED); |
570 |
return;
|
571 |
} |
572 |
|
573 |
visit_type_str(v, &ptr, name, &local_err); |
574 |
if (local_err) {
|
575 |
error_propagate(errp, local_err); |
576 |
return;
|
577 |
} |
578 |
|
579 |
ret = prop->info->parse(dev, prop, ptr); |
580 |
error_set_from_qdev_prop_error(errp, ret, dev, prop, ptr); |
581 |
g_free(ptr); |
582 |
} |
583 |
|
584 |
/**
|
585 |
* @qdev_add_legacy_property - adds a legacy property
|
586 |
*
|
587 |
* Do not use this is new code! Properties added through this interface will
|
588 |
* be given names and types in the "legacy" namespace.
|
589 |
*
|
590 |
* Legacy properties are string versions of other OOM properties. The format
|
591 |
* of the string depends on the property type.
|
592 |
*/
|
593 |
void qdev_property_add_legacy(DeviceState *dev, Property *prop,
|
594 |
Error **errp) |
595 |
{ |
596 |
gchar *name, *type; |
597 |
|
598 |
/* Register pointer properties as legacy properties */
|
599 |
if (!prop->info->print && !prop->info->parse &&
|
600 |
(prop->info->set || prop->info->get)) { |
601 |
return;
|
602 |
} |
603 |
|
604 |
name = g_strdup_printf("legacy-%s", prop->name);
|
605 |
type = g_strdup_printf("legacy<%s>",
|
606 |
prop->info->legacy_name ?: prop->info->name); |
607 |
|
608 |
object_property_add(OBJECT(dev), name, type, |
609 |
prop->info->print ? qdev_get_legacy_property : prop->info->get, |
610 |
prop->info->parse ? qdev_set_legacy_property : prop->info->set, |
611 |
NULL,
|
612 |
prop, errp); |
613 |
|
614 |
g_free(type); |
615 |
g_free(name); |
616 |
} |
617 |
|
618 |
/**
|
619 |
* @qdev_property_add_static - add a @Property to a device.
|
620 |
*
|
621 |
* Static properties access data in a struct. The actual type of the
|
622 |
* property and the field depends on the property type.
|
623 |
*/
|
624 |
void qdev_property_add_static(DeviceState *dev, Property *prop,
|
625 |
Error **errp) |
626 |
{ |
627 |
Error *local_err = NULL;
|
628 |
Object *obj = OBJECT(dev); |
629 |
|
630 |
/*
|
631 |
* TODO qdev_prop_ptr does not have getters or setters. It must
|
632 |
* go now that it can be replaced with links. The test should be
|
633 |
* removed along with it: all static properties are read/write.
|
634 |
*/
|
635 |
if (!prop->info->get && !prop->info->set) {
|
636 |
return;
|
637 |
} |
638 |
|
639 |
object_property_add(obj, prop->name, prop->info->name, |
640 |
prop->info->get, prop->info->set, |
641 |
prop->info->release, |
642 |
prop, &local_err); |
643 |
|
644 |
if (local_err) {
|
645 |
error_propagate(errp, local_err); |
646 |
return;
|
647 |
} |
648 |
if (prop->qtype == QTYPE_NONE) {
|
649 |
return;
|
650 |
} |
651 |
|
652 |
if (prop->qtype == QTYPE_QBOOL) {
|
653 |
object_property_set_bool(obj, prop->defval, prop->name, &local_err); |
654 |
} else if (prop->info->enum_table) { |
655 |
object_property_set_str(obj, prop->info->enum_table[prop->defval], |
656 |
prop->name, &local_err); |
657 |
} else if (prop->qtype == QTYPE_QINT) { |
658 |
object_property_set_int(obj, prop->defval, prop->name, &local_err); |
659 |
} |
660 |
assert_no_error(local_err); |
661 |
} |
662 |
|
663 |
static void device_initfn(Object *obj) |
664 |
{ |
665 |
DeviceState *dev = DEVICE(obj); |
666 |
ObjectClass *class; |
667 |
Property *prop; |
668 |
|
669 |
if (qdev_hotplug) {
|
670 |
dev->hotplugged = 1;
|
671 |
qdev_hot_added = true;
|
672 |
} |
673 |
|
674 |
dev->instance_id_alias = -1;
|
675 |
dev->state = DEV_STATE_CREATED; |
676 |
|
677 |
class = object_get_class(OBJECT(dev)); |
678 |
do {
|
679 |
for (prop = DEVICE_CLASS(class)->props; prop && prop->name; prop++) {
|
680 |
qdev_property_add_legacy(dev, prop, NULL);
|
681 |
qdev_property_add_static(dev, prop, NULL);
|
682 |
} |
683 |
class = object_class_get_parent(class); |
684 |
} while (class != object_class_by_name(TYPE_DEVICE));
|
685 |
qdev_prop_set_globals(dev); |
686 |
|
687 |
object_property_add_link(OBJECT(dev), "parent_bus", TYPE_BUS,
|
688 |
(Object **)&dev->parent_bus, NULL);
|
689 |
} |
690 |
|
691 |
/* Unlink device from bus and free the structure. */
|
692 |
static void device_finalize(Object *obj) |
693 |
{ |
694 |
DeviceState *dev = DEVICE(obj); |
695 |
BusState *bus; |
696 |
DeviceClass *dc = DEVICE_GET_CLASS(dev); |
697 |
|
698 |
if (dev->state == DEV_STATE_INITIALIZED) {
|
699 |
while (dev->num_child_bus) {
|
700 |
bus = QLIST_FIRST(&dev->child_bus); |
701 |
qbus_free(bus); |
702 |
} |
703 |
if (qdev_get_vmsd(dev)) {
|
704 |
vmstate_unregister(dev, qdev_get_vmsd(dev), dev); |
705 |
} |
706 |
if (dc->exit) {
|
707 |
dc->exit(dev); |
708 |
} |
709 |
if (dev->opts) {
|
710 |
qemu_opts_del(dev->opts); |
711 |
} |
712 |
} |
713 |
if (dev->parent_bus) {
|
714 |
bus_remove_child(dev->parent_bus, dev); |
715 |
} |
716 |
} |
717 |
|
718 |
static void device_class_base_init(ObjectClass *class, void *data) |
719 |
{ |
720 |
DeviceClass *klass = DEVICE_CLASS(class); |
721 |
|
722 |
/* We explicitly look up properties in the superclasses,
|
723 |
* so do not propagate them to the subclasses.
|
724 |
*/
|
725 |
klass->props = NULL;
|
726 |
} |
727 |
|
728 |
void device_reset(DeviceState *dev)
|
729 |
{ |
730 |
DeviceClass *klass = DEVICE_GET_CLASS(dev); |
731 |
|
732 |
if (klass->reset) {
|
733 |
klass->reset(dev); |
734 |
} |
735 |
} |
736 |
|
737 |
Object *qdev_get_machine(void)
|
738 |
{ |
739 |
static Object *dev;
|
740 |
|
741 |
if (dev == NULL) { |
742 |
dev = container_get(object_get_root(), "/machine");
|
743 |
} |
744 |
|
745 |
return dev;
|
746 |
} |
747 |
|
748 |
static TypeInfo device_type_info = {
|
749 |
.name = TYPE_DEVICE, |
750 |
.parent = TYPE_OBJECT, |
751 |
.instance_size = sizeof(DeviceState),
|
752 |
.instance_init = device_initfn, |
753 |
.instance_finalize = device_finalize, |
754 |
.class_base_init = device_class_base_init, |
755 |
.abstract = true,
|
756 |
.class_size = sizeof(DeviceClass),
|
757 |
}; |
758 |
|
759 |
static void qbus_initfn(Object *obj) |
760 |
{ |
761 |
BusState *bus = BUS(obj); |
762 |
|
763 |
QTAILQ_INIT(&bus->children); |
764 |
} |
765 |
|
766 |
static void qbus_finalize(Object *obj) |
767 |
{ |
768 |
BusState *bus = BUS(obj); |
769 |
BusChild *kid; |
770 |
|
771 |
while ((kid = QTAILQ_FIRST(&bus->children)) != NULL) { |
772 |
DeviceState *dev = kid->child; |
773 |
qdev_free(dev); |
774 |
} |
775 |
if (bus->parent) {
|
776 |
QLIST_REMOVE(bus, sibling); |
777 |
bus->parent->num_child_bus--; |
778 |
} else {
|
779 |
assert(bus != sysbus_get_default()); /* main_system_bus is never freed */
|
780 |
qemu_unregister_reset(qbus_reset_all_fn, bus); |
781 |
} |
782 |
g_free((char *)bus->name);
|
783 |
} |
784 |
|
785 |
static const TypeInfo bus_info = { |
786 |
.name = TYPE_BUS, |
787 |
.parent = TYPE_OBJECT, |
788 |
.instance_size = sizeof(BusState),
|
789 |
.abstract = true,
|
790 |
.class_size = sizeof(BusClass),
|
791 |
.instance_init = qbus_initfn, |
792 |
.instance_finalize = qbus_finalize, |
793 |
}; |
794 |
|
795 |
static void qdev_register_types(void) |
796 |
{ |
797 |
type_register_static(&bus_info); |
798 |
type_register_static(&device_type_info); |
799 |
} |
800 |
|
801 |
type_init(qdev_register_types) |