root / hw / core / qdev.c @ 7ce7ffe0
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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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qerror_report_err(local_err); |
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error_free(local_err); |
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object_unparent(OBJECT(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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static void device_unrealize(DeviceState *dev, Error **errp) |
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{ |
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DeviceClass *dc = DEVICE_GET_CLASS(dev); |
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if (dc->exit) {
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int rc = dc->exit(dev);
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if (rc < 0) { |
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error_setg(errp, "Device exit 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 && !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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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, NULL, NULL, 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, NULL, NULL, 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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object_unparent(OBJECT(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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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,
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qdev_walkerfn *pre_devfn, qbus_walkerfn *pre_busfn, |
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qdev_walkerfn *post_devfn, qbus_walkerfn *post_busfn, |
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void *opaque)
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{ |
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BusChild *kid; |
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int err;
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if (pre_busfn) {
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err = pre_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, |
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pre_devfn, pre_busfn, |
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post_devfn, post_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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if (post_busfn) {
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err = post_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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return 0; |
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} |
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int qdev_walk_children(DeviceState *dev,
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qdev_walkerfn *pre_devfn, qbus_walkerfn *pre_busfn, |
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qdev_walkerfn *post_devfn, qbus_walkerfn *post_busfn, |
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void *opaque)
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{ |
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BusState *bus; |
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int err;
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if (pre_devfn) {
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err = pre_devfn(dev, opaque); |
384 |
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, pre_devfn, pre_busfn, |
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post_devfn, post_busfn, opaque); |
392 |
if (err < 0) { |
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return err;
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} |
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} |
396 |
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if (post_devfn) {
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err = post_devfn(dev, opaque); |
399 |
if (err) {
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return err;
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} |
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} |
403 |
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return 0; |
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} |
406 |
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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; |
412 |
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QTAILQ_FOREACH(kid, &bus->children, sibling) { |
414 |
DeviceState *dev = kid->child; |
415 |
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if (dev->id && strcmp(dev->id, id) == 0) { |
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return dev;
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} |
419 |
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QLIST_FOREACH(child, &dev->child_bus, sibling) { |
421 |
ret = qdev_find_recursive(child, id); |
422 |
if (ret) {
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return ret;
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} |
425 |
} |
426 |
} |
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return NULL; |
428 |
} |
429 |
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430 |
static void qbus_realize(BusState *bus, DeviceState *parent, const char *name) |
431 |
{ |
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const char *typename = object_get_typename(OBJECT(bus)); |
433 |
char *buf;
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int i,len;
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435 |
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bus->parent = parent; |
437 |
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438 |
if (name) {
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bus->name = g_strdup(name); |
440 |
} else if (bus->parent && bus->parent->id) { |
441 |
/* 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); |
444 |
snprintf(buf, len, "%s.%d", bus->parent->id, bus->parent->num_child_bus);
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bus->name = buf; |
446 |
} 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); |
450 |
len = snprintf(buf, len, "%s.%d", typename,
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bus->parent ? bus->parent->num_child_bus : 0);
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452 |
for (i = 0; i < len; i++) |
453 |
buf[i] = qemu_tolower(buf[i]); |
454 |
bus->name = buf; |
455 |
} |
456 |
|
457 |
if (bus->parent) {
|
458 |
QLIST_INSERT_HEAD(&bus->parent->child_bus, bus, sibling); |
459 |
bus->parent->num_child_bus++; |
460 |
object_property_add_child(OBJECT(bus->parent), bus->name, OBJECT(bus), NULL);
|
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object_unref(OBJECT(bus)); |
462 |
} else if (bus != sysbus_get_default()) { |
463 |
/* TODO: once all bus devices are qdevified,
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464 |
only reset handler for main_system_bus should be registered here. */
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465 |
qemu_register_reset(qbus_reset_all_fn, bus); |
466 |
} |
467 |
} |
468 |
|
469 |
static void bus_unparent(Object *obj) |
470 |
{ |
471 |
BusState *bus = BUS(obj); |
472 |
BusChild *kid; |
473 |
|
474 |
while ((kid = QTAILQ_FIRST(&bus->children)) != NULL) { |
475 |
DeviceState *dev = kid->child; |
476 |
object_unparent(OBJECT(dev)); |
477 |
} |
478 |
if (bus->parent) {
|
479 |
QLIST_REMOVE(bus, sibling); |
480 |
bus->parent->num_child_bus--; |
481 |
bus->parent = NULL;
|
482 |
} else {
|
483 |
assert(bus != sysbus_get_default()); /* main_system_bus is never freed */
|
484 |
qemu_unregister_reset(qbus_reset_all_fn, bus); |
485 |
} |
486 |
} |
487 |
|
488 |
void qbus_create_inplace(void *bus, size_t size, const char *typename, |
489 |
DeviceState *parent, const char *name) |
490 |
{ |
491 |
object_initialize(bus, size, typename); |
492 |
qbus_realize(bus, parent, name); |
493 |
} |
494 |
|
495 |
BusState *qbus_create(const char *typename, DeviceState *parent, const char *name) |
496 |
{ |
497 |
BusState *bus; |
498 |
|
499 |
bus = BUS(object_new(typename)); |
500 |
qbus_realize(bus, parent, name); |
501 |
|
502 |
return bus;
|
503 |
} |
504 |
|
505 |
static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev) |
506 |
{ |
507 |
BusClass *bc = BUS_GET_CLASS(bus); |
508 |
|
509 |
if (bc->get_fw_dev_path) {
|
510 |
return bc->get_fw_dev_path(dev);
|
511 |
} |
512 |
|
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return NULL; |
514 |
} |
515 |
|
516 |
static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) |
517 |
{ |
518 |
int l = 0; |
519 |
|
520 |
if (dev && dev->parent_bus) {
|
521 |
char *d;
|
522 |
l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); |
523 |
d = bus_get_fw_dev_path(dev->parent_bus, dev); |
524 |
if (d) {
|
525 |
l += snprintf(p + l, size - l, "%s", d);
|
526 |
g_free(d); |
527 |
} else {
|
528 |
return l;
|
529 |
} |
530 |
} |
531 |
l += snprintf(p + l , size - l, "/");
|
532 |
|
533 |
return l;
|
534 |
} |
535 |
|
536 |
char* qdev_get_fw_dev_path(DeviceState *dev)
|
537 |
{ |
538 |
char path[128]; |
539 |
int l;
|
540 |
|
541 |
l = qdev_get_fw_dev_path_helper(dev, path, 128);
|
542 |
|
543 |
path[l-1] = '\0'; |
544 |
|
545 |
return g_strdup(path);
|
546 |
} |
547 |
|
548 |
char *qdev_get_dev_path(DeviceState *dev)
|
549 |
{ |
550 |
BusClass *bc; |
551 |
|
552 |
if (!dev || !dev->parent_bus) {
|
553 |
return NULL; |
554 |
} |
555 |
|
556 |
bc = BUS_GET_CLASS(dev->parent_bus); |
557 |
if (bc->get_dev_path) {
|
558 |
return bc->get_dev_path(dev);
|
559 |
} |
560 |
|
561 |
return NULL; |
562 |
} |
563 |
|
564 |
/**
|
565 |
* Legacy property handling
|
566 |
*/
|
567 |
|
568 |
static void qdev_get_legacy_property(Object *obj, Visitor *v, void *opaque, |
569 |
const char *name, Error **errp) |
570 |
{ |
571 |
DeviceState *dev = DEVICE(obj); |
572 |
Property *prop = opaque; |
573 |
|
574 |
char buffer[1024]; |
575 |
char *ptr = buffer;
|
576 |
|
577 |
prop->info->print(dev, prop, buffer, sizeof(buffer));
|
578 |
visit_type_str(v, &ptr, name, errp); |
579 |
} |
580 |
|
581 |
/**
|
582 |
* @qdev_add_legacy_property - adds a legacy property
|
583 |
*
|
584 |
* Do not use this is new code! Properties added through this interface will
|
585 |
* be given names and types in the "legacy" namespace.
|
586 |
*
|
587 |
* Legacy properties are string versions of other OOM properties. The format
|
588 |
* of the string depends on the property type.
|
589 |
*/
|
590 |
void qdev_property_add_legacy(DeviceState *dev, Property *prop,
|
591 |
Error **errp) |
592 |
{ |
593 |
gchar *name; |
594 |
|
595 |
/* Register pointer properties as legacy properties */
|
596 |
if (!prop->info->print && prop->info->get) {
|
597 |
return;
|
598 |
} |
599 |
|
600 |
name = g_strdup_printf("legacy-%s", prop->name);
|
601 |
object_property_add(OBJECT(dev), name, "str",
|
602 |
prop->info->print ? qdev_get_legacy_property : prop->info->get, |
603 |
NULL,
|
604 |
NULL,
|
605 |
prop, errp); |
606 |
|
607 |
g_free(name); |
608 |
} |
609 |
|
610 |
/**
|
611 |
* @qdev_property_add_static - add a @Property to a device.
|
612 |
*
|
613 |
* Static properties access data in a struct. The actual type of the
|
614 |
* property and the field depends on the property type.
|
615 |
*/
|
616 |
void qdev_property_add_static(DeviceState *dev, Property *prop,
|
617 |
Error **errp) |
618 |
{ |
619 |
Error *local_err = NULL;
|
620 |
Object *obj = OBJECT(dev); |
621 |
|
622 |
/*
|
623 |
* TODO qdev_prop_ptr does not have getters or setters. It must
|
624 |
* go now that it can be replaced with links. The test should be
|
625 |
* removed along with it: all static properties are read/write.
|
626 |
*/
|
627 |
if (!prop->info->get && !prop->info->set) {
|
628 |
return;
|
629 |
} |
630 |
|
631 |
object_property_add(obj, prop->name, prop->info->name, |
632 |
prop->info->get, prop->info->set, |
633 |
prop->info->release, |
634 |
prop, &local_err); |
635 |
|
636 |
if (local_err) {
|
637 |
error_propagate(errp, local_err); |
638 |
return;
|
639 |
} |
640 |
if (prop->qtype == QTYPE_NONE) {
|
641 |
return;
|
642 |
} |
643 |
|
644 |
if (prop->qtype == QTYPE_QBOOL) {
|
645 |
object_property_set_bool(obj, prop->defval, prop->name, &error_abort); |
646 |
} else if (prop->info->enum_table) { |
647 |
object_property_set_str(obj, prop->info->enum_table[prop->defval], |
648 |
prop->name, &error_abort); |
649 |
} else if (prop->qtype == QTYPE_QINT) { |
650 |
object_property_set_int(obj, prop->defval, prop->name, &error_abort); |
651 |
} |
652 |
} |
653 |
|
654 |
static bool device_get_realized(Object *obj, Error **err) |
655 |
{ |
656 |
DeviceState *dev = DEVICE(obj); |
657 |
return dev->realized;
|
658 |
} |
659 |
|
660 |
static void device_set_realized(Object *obj, bool value, Error **err) |
661 |
{ |
662 |
DeviceState *dev = DEVICE(obj); |
663 |
DeviceClass *dc = DEVICE_GET_CLASS(dev); |
664 |
Error *local_err = NULL;
|
665 |
|
666 |
if (value && !dev->realized) {
|
667 |
if (!obj->parent && local_err == NULL) { |
668 |
static int unattached_count; |
669 |
gchar *name = g_strdup_printf("device[%d]", unattached_count++);
|
670 |
|
671 |
object_property_add_child(container_get(qdev_get_machine(), |
672 |
"/unattached"),
|
673 |
name, obj, &local_err); |
674 |
g_free(name); |
675 |
} |
676 |
|
677 |
if (dc->realize) {
|
678 |
dc->realize(dev, &local_err); |
679 |
} |
680 |
|
681 |
if (qdev_get_vmsd(dev) && local_err == NULL) { |
682 |
vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev,
|
683 |
dev->instance_id_alias, |
684 |
dev->alias_required_for_version); |
685 |
} |
686 |
if (dev->hotplugged && local_err == NULL) { |
687 |
device_reset(dev); |
688 |
} |
689 |
} else if (!value && dev->realized) { |
690 |
if (qdev_get_vmsd(dev)) {
|
691 |
vmstate_unregister(dev, qdev_get_vmsd(dev), dev); |
692 |
} |
693 |
if (dc->unrealize) {
|
694 |
dc->unrealize(dev, &local_err); |
695 |
} |
696 |
} |
697 |
|
698 |
if (local_err != NULL) { |
699 |
error_propagate(err, local_err); |
700 |
return;
|
701 |
} |
702 |
|
703 |
dev->realized = value; |
704 |
} |
705 |
|
706 |
static void device_initfn(Object *obj) |
707 |
{ |
708 |
DeviceState *dev = DEVICE(obj); |
709 |
ObjectClass *class; |
710 |
Property *prop; |
711 |
|
712 |
if (qdev_hotplug) {
|
713 |
dev->hotplugged = 1;
|
714 |
qdev_hot_added = true;
|
715 |
} |
716 |
|
717 |
dev->instance_id_alias = -1;
|
718 |
dev->realized = false;
|
719 |
|
720 |
object_property_add_bool(obj, "realized",
|
721 |
device_get_realized, device_set_realized, NULL);
|
722 |
|
723 |
class = object_get_class(OBJECT(dev)); |
724 |
do {
|
725 |
for (prop = DEVICE_CLASS(class)->props; prop && prop->name; prop++) {
|
726 |
qdev_property_add_legacy(dev, prop, &error_abort); |
727 |
qdev_property_add_static(dev, prop, &error_abort); |
728 |
} |
729 |
class = object_class_get_parent(class); |
730 |
} while (class != object_class_by_name(TYPE_DEVICE));
|
731 |
|
732 |
object_property_add_link(OBJECT(dev), "parent_bus", TYPE_BUS,
|
733 |
(Object **)&dev->parent_bus, &error_abort); |
734 |
} |
735 |
|
736 |
static void device_post_init(Object *obj) |
737 |
{ |
738 |
qdev_prop_set_globals(DEVICE(obj), &error_abort); |
739 |
} |
740 |
|
741 |
/* Unlink device from bus and free the structure. */
|
742 |
static void device_finalize(Object *obj) |
743 |
{ |
744 |
DeviceState *dev = DEVICE(obj); |
745 |
if (dev->opts) {
|
746 |
qemu_opts_del(dev->opts); |
747 |
} |
748 |
} |
749 |
|
750 |
static void device_class_base_init(ObjectClass *class, void *data) |
751 |
{ |
752 |
DeviceClass *klass = DEVICE_CLASS(class); |
753 |
|
754 |
/* We explicitly look up properties in the superclasses,
|
755 |
* so do not propagate them to the subclasses.
|
756 |
*/
|
757 |
klass->props = NULL;
|
758 |
} |
759 |
|
760 |
static void device_unparent(Object *obj) |
761 |
{ |
762 |
DeviceState *dev = DEVICE(obj); |
763 |
BusState *bus; |
764 |
QObject *event_data; |
765 |
bool have_realized = dev->realized;
|
766 |
|
767 |
while (dev->num_child_bus) {
|
768 |
bus = QLIST_FIRST(&dev->child_bus); |
769 |
object_unparent(OBJECT(bus)); |
770 |
} |
771 |
if (dev->realized) {
|
772 |
object_property_set_bool(obj, false, "realized", NULL); |
773 |
} |
774 |
if (dev->parent_bus) {
|
775 |
bus_remove_child(dev->parent_bus, dev); |
776 |
object_unref(OBJECT(dev->parent_bus)); |
777 |
dev->parent_bus = NULL;
|
778 |
} |
779 |
|
780 |
/* Only send event if the device had been completely realized */
|
781 |
if (have_realized) {
|
782 |
gchar *path = object_get_canonical_path(OBJECT(dev)); |
783 |
|
784 |
if (dev->id) {
|
785 |
event_data = qobject_from_jsonf("{ 'device': %s, 'path': %s }",
|
786 |
dev->id, path); |
787 |
} else {
|
788 |
event_data = qobject_from_jsonf("{ 'path': %s }", path);
|
789 |
} |
790 |
monitor_protocol_event(QEVENT_DEVICE_DELETED, event_data); |
791 |
qobject_decref(event_data); |
792 |
g_free(path); |
793 |
} |
794 |
} |
795 |
|
796 |
static void device_class_init(ObjectClass *class, void *data) |
797 |
{ |
798 |
DeviceClass *dc = DEVICE_CLASS(class); |
799 |
|
800 |
class->unparent = device_unparent; |
801 |
dc->realize = device_realize; |
802 |
dc->unrealize = device_unrealize; |
803 |
} |
804 |
|
805 |
void device_reset(DeviceState *dev)
|
806 |
{ |
807 |
DeviceClass *klass = DEVICE_GET_CLASS(dev); |
808 |
|
809 |
if (klass->reset) {
|
810 |
klass->reset(dev); |
811 |
} |
812 |
} |
813 |
|
814 |
Object *qdev_get_machine(void)
|
815 |
{ |
816 |
static Object *dev;
|
817 |
|
818 |
if (dev == NULL) { |
819 |
dev = container_get(object_get_root(), "/machine");
|
820 |
} |
821 |
|
822 |
return dev;
|
823 |
} |
824 |
|
825 |
static const TypeInfo device_type_info = { |
826 |
.name = TYPE_DEVICE, |
827 |
.parent = TYPE_OBJECT, |
828 |
.instance_size = sizeof(DeviceState),
|
829 |
.instance_init = device_initfn, |
830 |
.instance_post_init = device_post_init, |
831 |
.instance_finalize = device_finalize, |
832 |
.class_base_init = device_class_base_init, |
833 |
.class_init = device_class_init, |
834 |
.abstract = true,
|
835 |
.class_size = sizeof(DeviceClass),
|
836 |
}; |
837 |
|
838 |
static void qbus_initfn(Object *obj) |
839 |
{ |
840 |
BusState *bus = BUS(obj); |
841 |
|
842 |
QTAILQ_INIT(&bus->children); |
843 |
} |
844 |
|
845 |
static char *default_bus_get_fw_dev_path(DeviceState *dev) |
846 |
{ |
847 |
return g_strdup(object_get_typename(OBJECT(dev)));
|
848 |
} |
849 |
|
850 |
static void bus_class_init(ObjectClass *class, void *data) |
851 |
{ |
852 |
BusClass *bc = BUS_CLASS(class); |
853 |
|
854 |
class->unparent = bus_unparent; |
855 |
bc->get_fw_dev_path = default_bus_get_fw_dev_path; |
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) |