diff options
author | Paolo Bonzini <pbonzini@redhat.com> | 2013-03-01 13:59:19 +0100 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2013-04-08 18:13:12 +0200 |
commit | 49ab747f668f421138d5b40d83fa279c4c5e278d (patch) | |
tree | 943225a04eac885aed038731adf058f2250a2f40 /hw/qdev.c | |
parent | ce3b494cb504f96992f2d37ebc8f56deed202b06 (diff) | |
download | hqemu-49ab747f668f421138d5b40d83fa279c4c5e278d.zip hqemu-49ab747f668f421138d5b40d83fa279c4c5e278d.tar.gz |
hw: move target-independent files to subdirectories
This patch tackles all files that are compiled once, moving
them to subdirectories of hw/.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/qdev.c')
-rw-r--r-- | hw/qdev.c | 882 |
1 files changed, 0 insertions, 882 deletions
diff --git a/hw/qdev.c b/hw/qdev.c deleted file mode 100644 index e2bb37d..0000000 --- a/hw/qdev.c +++ /dev/null @@ -1,882 +0,0 @@ -/* - * Dynamic device configuration and creation. - * - * Copyright (c) 2009 CodeSourcery - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - */ - -/* The theory here is that it should be possible to create a machine without - knowledge of specific devices. Historically board init routines have - passed a bunch of arguments to each device, requiring the board know - exactly which device it is dealing with. This file provides an abstract - API for device configuration and initialization. Devices will generally - inherit from a particular bus (e.g. PCI or I2C) rather than - this API directly. */ - -#include "hw/qdev.h" -#include "sysemu/sysemu.h" -#include "qapi/error.h" -#include "qapi/qmp/qerror.h" -#include "qapi/visitor.h" -#include "qapi/qmp/qjson.h" -#include "monitor/monitor.h" - -int qdev_hotplug = 0; -static bool qdev_hot_added = false; -static bool qdev_hot_removed = false; - -const VMStateDescription *qdev_get_vmsd(DeviceState *dev) -{ - DeviceClass *dc = DEVICE_GET_CLASS(dev); - return dc->vmsd; -} - -const char *qdev_fw_name(DeviceState *dev) -{ - DeviceClass *dc = DEVICE_GET_CLASS(dev); - - if (dc->fw_name) { - return dc->fw_name; - } - - return object_get_typename(OBJECT(dev)); -} - -static void qdev_property_add_legacy(DeviceState *dev, Property *prop, - Error **errp); - -static void bus_remove_child(BusState *bus, DeviceState *child) -{ - BusChild *kid; - - QTAILQ_FOREACH(kid, &bus->children, sibling) { - if (kid->child == child) { - char name[32]; - - snprintf(name, sizeof(name), "child[%d]", kid->index); - QTAILQ_REMOVE(&bus->children, kid, sibling); - - /* This gives back ownership of kid->child back to us. */ - object_property_del(OBJECT(bus), name, NULL); - object_unref(OBJECT(kid->child)); - g_free(kid); - return; - } - } -} - -static void bus_add_child(BusState *bus, DeviceState *child) -{ - char name[32]; - BusChild *kid = g_malloc0(sizeof(*kid)); - - if (qdev_hotplug) { - assert(bus->allow_hotplug); - } - - kid->index = bus->max_index++; - kid->child = child; - object_ref(OBJECT(kid->child)); - - QTAILQ_INSERT_HEAD(&bus->children, kid, sibling); - - /* This transfers ownership of kid->child to the property. */ - snprintf(name, sizeof(name), "child[%d]", kid->index); - object_property_add_link(OBJECT(bus), name, - object_get_typename(OBJECT(child)), - (Object **)&kid->child, - NULL); -} - -void qdev_set_parent_bus(DeviceState *dev, BusState *bus) -{ - dev->parent_bus = bus; - object_ref(OBJECT(bus)); - bus_add_child(bus, dev); -} - -/* Create a new device. This only initializes the device state structure - and allows properties to be set. qdev_init should be called to - initialize the actual device emulation. */ -DeviceState *qdev_create(BusState *bus, const char *name) -{ - DeviceState *dev; - - dev = qdev_try_create(bus, name); - if (!dev) { - if (bus) { - error_report("Unknown device '%s' for bus '%s'", name, - object_get_typename(OBJECT(bus))); - } else { - error_report("Unknown device '%s' for default sysbus", name); - } - abort(); - } - - return dev; -} - -DeviceState *qdev_try_create(BusState *bus, const char *type) -{ - DeviceState *dev; - - if (object_class_by_name(type) == NULL) { - return NULL; - } - dev = DEVICE(object_new(type)); - if (!dev) { - return NULL; - } - - if (!bus) { - bus = sysbus_get_default(); - } - - qdev_set_parent_bus(dev, bus); - object_unref(OBJECT(dev)); - return dev; -} - -/* Initialize a device. Device properties should be set before calling - this function. IRQs and MMIO regions should be connected/mapped after - calling this function. - On failure, destroy the device and return negative value. - Return 0 on success. */ -int qdev_init(DeviceState *dev) -{ - Error *local_err = NULL; - - assert(!dev->realized); - - object_property_set_bool(OBJECT(dev), true, "realized", &local_err); - if (local_err != NULL) { - error_free(local_err); - qdev_free(dev); - return -1; - } - return 0; -} - -static void device_realize(DeviceState *dev, Error **err) -{ - DeviceClass *dc = DEVICE_GET_CLASS(dev); - - if (dc->init) { - int rc = dc->init(dev); - if (rc < 0) { - error_setg(err, "Device initialization failed."); - return; - } - } -} - -void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, - int required_for_version) -{ - assert(!dev->realized); - dev->instance_id_alias = alias_id; - dev->alias_required_for_version = required_for_version; -} - -void qdev_unplug(DeviceState *dev, Error **errp) -{ - DeviceClass *dc = DEVICE_GET_CLASS(dev); - - if (!dev->parent_bus->allow_hotplug) { - error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); - return; - } - assert(dc->unplug != NULL); - - qdev_hot_removed = true; - - if (dc->unplug(dev) < 0) { - error_set(errp, QERR_UNDEFINED_ERROR); - return; - } -} - -static int qdev_reset_one(DeviceState *dev, void *opaque) -{ - device_reset(dev); - - return 0; -} - -static int qbus_reset_one(BusState *bus, void *opaque) -{ - BusClass *bc = BUS_GET_CLASS(bus); - if (bc->reset) { - return bc->reset(bus); - } - return 0; -} - -void qdev_reset_all(DeviceState *dev) -{ - qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL); -} - -void qbus_reset_all(BusState *bus) -{ - qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL); -} - -void qbus_reset_all_fn(void *opaque) -{ - BusState *bus = opaque; - qbus_reset_all(bus); -} - -/* can be used as ->unplug() callback for the simple cases */ -int qdev_simple_unplug_cb(DeviceState *dev) -{ - /* just zap it */ - qdev_free(dev); - return 0; -} - - -/* Like qdev_init(), but terminate program via error_report() instead of - returning an error value. This is okay during machine creation. - Don't use for hotplug, because there callers need to recover from - failure. Exception: if you know the device's init() callback can't - fail, then qdev_init_nofail() can't fail either, and is therefore - usable even then. But relying on the device implementation that - way is somewhat unclean, and best avoided. */ -void qdev_init_nofail(DeviceState *dev) -{ - const char *typename = object_get_typename(OBJECT(dev)); - - if (qdev_init(dev) < 0) { - error_report("Initialization of device %s failed", typename); - exit(1); - } -} - -/* Unlink device from bus and free the structure. */ -void qdev_free(DeviceState *dev) -{ - object_unparent(OBJECT(dev)); -} - -void qdev_machine_creation_done(void) -{ - /* - * ok, initial machine setup is done, starting from now we can - * only create hotpluggable devices - */ - qdev_hotplug = 1; -} - -bool qdev_machine_modified(void) -{ - return qdev_hot_added || qdev_hot_removed; -} - -BusState *qdev_get_parent_bus(DeviceState *dev) -{ - return dev->parent_bus; -} - -void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) -{ - dev->gpio_in = qemu_extend_irqs(dev->gpio_in, dev->num_gpio_in, handler, - dev, n); - dev->num_gpio_in += n; -} - -void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) -{ - assert(dev->num_gpio_out == 0); - dev->num_gpio_out = n; - dev->gpio_out = pins; -} - -qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) -{ - assert(n >= 0 && n < dev->num_gpio_in); - return dev->gpio_in[n]; -} - -void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) -{ - assert(n >= 0 && n < dev->num_gpio_out); - dev->gpio_out[n] = pin; -} - -BusState *qdev_get_child_bus(DeviceState *dev, const char *name) -{ - BusState *bus; - - QLIST_FOREACH(bus, &dev->child_bus, sibling) { - if (strcmp(name, bus->name) == 0) { - return bus; - } - } - return NULL; -} - -int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn, - qbus_walkerfn *busfn, void *opaque) -{ - BusChild *kid; - int err; - - if (busfn) { - err = busfn(bus, opaque); - if (err) { - return err; - } - } - - QTAILQ_FOREACH(kid, &bus->children, sibling) { - err = qdev_walk_children(kid->child, devfn, busfn, opaque); - if (err < 0) { - return err; - } - } - - return 0; -} - -int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn, - qbus_walkerfn *busfn, void *opaque) -{ - BusState *bus; - int err; - - if (devfn) { - err = devfn(dev, opaque); - if (err) { - return err; - } - } - - QLIST_FOREACH(bus, &dev->child_bus, sibling) { - err = qbus_walk_children(bus, devfn, busfn, opaque); - if (err < 0) { - return err; - } - } - - return 0; -} - -DeviceState *qdev_find_recursive(BusState *bus, const char *id) -{ - BusChild *kid; - DeviceState *ret; - BusState *child; - - QTAILQ_FOREACH(kid, &bus->children, sibling) { - DeviceState *dev = kid->child; - - if (dev->id && strcmp(dev->id, id) == 0) { - return dev; - } - - QLIST_FOREACH(child, &dev->child_bus, sibling) { - ret = qdev_find_recursive(child, id); - if (ret) { - return ret; - } - } - } - return NULL; -} - -static void qbus_realize(BusState *bus, DeviceState *parent, const char *name) -{ - const char *typename = object_get_typename(OBJECT(bus)); - char *buf; - int i,len; - - bus->parent = parent; - - if (name) { - bus->name = g_strdup(name); - } else if (bus->parent && bus->parent->id) { - /* parent device has id -> use it for bus name */ - len = strlen(bus->parent->id) + 16; - buf = g_malloc(len); - snprintf(buf, len, "%s.%d", bus->parent->id, bus->parent->num_child_bus); - bus->name = buf; - } else { - /* no id -> use lowercase bus type for bus name */ - len = strlen(typename) + 16; - buf = g_malloc(len); - len = snprintf(buf, len, "%s.%d", typename, - bus->parent ? bus->parent->num_child_bus : 0); - for (i = 0; i < len; i++) - buf[i] = qemu_tolower(buf[i]); - bus->name = buf; - } - - if (bus->parent) { - QLIST_INSERT_HEAD(&bus->parent->child_bus, bus, sibling); - bus->parent->num_child_bus++; - object_property_add_child(OBJECT(bus->parent), bus->name, OBJECT(bus), NULL); - object_unref(OBJECT(bus)); - } else if (bus != sysbus_get_default()) { - /* TODO: once all bus devices are qdevified, - only reset handler for main_system_bus should be registered here. */ - qemu_register_reset(qbus_reset_all_fn, bus); - } -} - -static void bus_unparent(Object *obj) -{ - BusState *bus = BUS(obj); - BusChild *kid; - - while ((kid = QTAILQ_FIRST(&bus->children)) != NULL) { - DeviceState *dev = kid->child; - qdev_free(dev); - } - if (bus->parent) { - QLIST_REMOVE(bus, sibling); - bus->parent->num_child_bus--; - bus->parent = NULL; - } else { - assert(bus != sysbus_get_default()); /* main_system_bus is never freed */ - qemu_unregister_reset(qbus_reset_all_fn, bus); - } -} - -void qbus_create_inplace(void *bus, const char *typename, - DeviceState *parent, const char *name) -{ - object_initialize(bus, typename); - qbus_realize(bus, parent, name); -} - -BusState *qbus_create(const char *typename, DeviceState *parent, const char *name) -{ - BusState *bus; - - bus = BUS(object_new(typename)); - qbus_realize(bus, parent, name); - - return bus; -} - -void qbus_free(BusState *bus) -{ - object_unparent(OBJECT(bus)); -} - -static char *bus_get_fw_dev_path(BusState *bus, DeviceState *dev) -{ - BusClass *bc = BUS_GET_CLASS(bus); - - if (bc->get_fw_dev_path) { - return bc->get_fw_dev_path(dev); - } - - return NULL; -} - -static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) -{ - int l = 0; - - if (dev && dev->parent_bus) { - char *d; - l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); - d = bus_get_fw_dev_path(dev->parent_bus, dev); - if (d) { - l += snprintf(p + l, size - l, "%s", d); - g_free(d); - } else { - l += snprintf(p + l, size - l, "%s", object_get_typename(OBJECT(dev))); - } - } - l += snprintf(p + l , size - l, "/"); - - return l; -} - -char* qdev_get_fw_dev_path(DeviceState *dev) -{ - char path[128]; - int l; - - l = qdev_get_fw_dev_path_helper(dev, path, 128); - - path[l-1] = '\0'; - - return g_strdup(path); -} - -char *qdev_get_dev_path(DeviceState *dev) -{ - BusClass *bc; - - if (!dev || !dev->parent_bus) { - return NULL; - } - - bc = BUS_GET_CLASS(dev->parent_bus); - if (bc->get_dev_path) { - return bc->get_dev_path(dev); - } - - return NULL; -} - -/** - * Legacy property handling - */ - -static void qdev_get_legacy_property(Object *obj, Visitor *v, void *opaque, - const char *name, Error **errp) -{ - DeviceState *dev = DEVICE(obj); - Property *prop = opaque; - - char buffer[1024]; - char *ptr = buffer; - - prop->info->print(dev, prop, buffer, sizeof(buffer)); - visit_type_str(v, &ptr, name, errp); -} - -static void qdev_set_legacy_property(Object *obj, Visitor *v, void *opaque, - const char *name, Error **errp) -{ - DeviceState *dev = DEVICE(obj); - Property *prop = opaque; - Error *local_err = NULL; - char *ptr = NULL; - int ret; - - if (dev->realized) { - qdev_prop_set_after_realize(dev, name, errp); - return; - } - - visit_type_str(v, &ptr, name, &local_err); - if (local_err) { - error_propagate(errp, local_err); - return; - } - - ret = prop->info->parse(dev, prop, ptr); - error_set_from_qdev_prop_error(errp, ret, dev, prop, ptr); - g_free(ptr); -} - -/** - * @qdev_add_legacy_property - adds a legacy property - * - * Do not use this is new code! Properties added through this interface will - * be given names and types in the "legacy" namespace. - * - * Legacy properties are string versions of other OOM properties. The format - * of the string depends on the property type. - */ -void qdev_property_add_legacy(DeviceState *dev, Property *prop, - Error **errp) -{ - gchar *name, *type; - - /* Register pointer properties as legacy properties */ - if (!prop->info->print && !prop->info->parse && - (prop->info->set || prop->info->get)) { - return; - } - - name = g_strdup_printf("legacy-%s", prop->name); - type = g_strdup_printf("legacy<%s>", - prop->info->legacy_name ?: prop->info->name); - - object_property_add(OBJECT(dev), name, type, - prop->info->print ? qdev_get_legacy_property : prop->info->get, - prop->info->parse ? qdev_set_legacy_property : prop->info->set, - NULL, - prop, errp); - - g_free(type); - g_free(name); -} - -/** - * @qdev_property_add_static - add a @Property to a device. - * - * Static properties access data in a struct. The actual type of the - * property and the field depends on the property type. - */ -void qdev_property_add_static(DeviceState *dev, Property *prop, - Error **errp) -{ - Error *local_err = NULL; - Object *obj = OBJECT(dev); - - /* - * TODO qdev_prop_ptr does not have getters or setters. It must - * go now that it can be replaced with links. The test should be - * removed along with it: all static properties are read/write. - */ - if (!prop->info->get && !prop->info->set) { - return; - } - - object_property_add(obj, prop->name, prop->info->name, - prop->info->get, prop->info->set, - prop->info->release, - prop, &local_err); - - if (local_err) { - error_propagate(errp, local_err); - return; - } - if (prop->qtype == QTYPE_NONE) { - return; - } - - if (prop->qtype == QTYPE_QBOOL) { - object_property_set_bool(obj, prop->defval, prop->name, &local_err); - } else if (prop->info->enum_table) { - object_property_set_str(obj, prop->info->enum_table[prop->defval], - prop->name, &local_err); - } else if (prop->qtype == QTYPE_QINT) { - object_property_set_int(obj, prop->defval, prop->name, &local_err); - } - assert_no_error(local_err); -} - -static bool device_get_realized(Object *obj, Error **err) -{ - DeviceState *dev = DEVICE(obj); - return dev->realized; -} - -static void device_set_realized(Object *obj, bool value, Error **err) -{ - DeviceState *dev = DEVICE(obj); - DeviceClass *dc = DEVICE_GET_CLASS(dev); - Error *local_err = NULL; - - if (value && !dev->realized) { - if (dc->realize) { - dc->realize(dev, &local_err); - } - - if (!obj->parent && local_err == NULL) { - static int unattached_count; - gchar *name = g_strdup_printf("device[%d]", unattached_count++); - - object_property_add_child(container_get(qdev_get_machine(), - "/unattached"), - name, obj, &local_err); - g_free(name); - } - - if (qdev_get_vmsd(dev) && local_err == NULL) { - vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev, - dev->instance_id_alias, - dev->alias_required_for_version); - } - if (dev->hotplugged && local_err == NULL) { - device_reset(dev); - } - } else if (!value && dev->realized) { - if (dc->unrealize) { - dc->unrealize(dev, &local_err); - } - } - - if (local_err != NULL) { - error_propagate(err, local_err); - return; - } - - dev->realized = value; -} - -static void device_initfn(Object *obj) -{ - DeviceState *dev = DEVICE(obj); - ObjectClass *class; - Property *prop; - Error *err = NULL; - - if (qdev_hotplug) { - dev->hotplugged = 1; - qdev_hot_added = true; - } - - dev->instance_id_alias = -1; - dev->realized = false; - - object_property_add_bool(obj, "realized", - device_get_realized, device_set_realized, NULL); - - class = object_get_class(OBJECT(dev)); - do { - for (prop = DEVICE_CLASS(class)->props; prop && prop->name; prop++) { - qdev_property_add_legacy(dev, prop, &err); - assert_no_error(err); - qdev_property_add_static(dev, prop, &err); - assert_no_error(err); - } - class = object_class_get_parent(class); - } while (class != object_class_by_name(TYPE_DEVICE)); - qdev_prop_set_globals(dev); - - object_property_add_link(OBJECT(dev), "parent_bus", TYPE_BUS, - (Object **)&dev->parent_bus, &err); - assert_no_error(err); -} - -/* Unlink device from bus and free the structure. */ -static void device_finalize(Object *obj) -{ - DeviceState *dev = DEVICE(obj); - if (dev->opts) { - qemu_opts_del(dev->opts); - } -} - -static void device_class_base_init(ObjectClass *class, void *data) -{ - DeviceClass *klass = DEVICE_CLASS(class); - - /* We explicitly look up properties in the superclasses, - * so do not propagate them to the subclasses. - */ - klass->props = NULL; -} - -static void device_unparent(Object *obj) -{ - DeviceState *dev = DEVICE(obj); - DeviceClass *dc = DEVICE_GET_CLASS(dev); - BusState *bus; - QObject *event_data; - bool have_realized = dev->realized; - - while (dev->num_child_bus) { - bus = QLIST_FIRST(&dev->child_bus); - qbus_free(bus); - } - if (dev->realized) { - if (qdev_get_vmsd(dev)) { - vmstate_unregister(dev, qdev_get_vmsd(dev), dev); - } - if (dc->exit) { - dc->exit(dev); - } - } - if (dev->parent_bus) { - bus_remove_child(dev->parent_bus, dev); - object_unref(OBJECT(dev->parent_bus)); - dev->parent_bus = NULL; - } - - /* Only send event if the device had been completely realized */ - if (have_realized) { - gchar *path = object_get_canonical_path(OBJECT(dev)); - - if (dev->id) { - event_data = qobject_from_jsonf("{ 'device': %s, 'path': %s }", - dev->id, path); - } else { - event_data = qobject_from_jsonf("{ 'path': %s }", path); - } - monitor_protocol_event(QEVENT_DEVICE_DELETED, event_data); - qobject_decref(event_data); - g_free(path); - } -} - -static void device_class_init(ObjectClass *class, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(class); - - class->unparent = device_unparent; - dc->realize = device_realize; -} - -void device_reset(DeviceState *dev) -{ - DeviceClass *klass = DEVICE_GET_CLASS(dev); - - if (klass->reset) { - klass->reset(dev); - } -} - -Object *qdev_get_machine(void) -{ - static Object *dev; - - if (dev == NULL) { - dev = container_get(object_get_root(), "/machine"); - } - - return dev; -} - -static const TypeInfo device_type_info = { - .name = TYPE_DEVICE, - .parent = TYPE_OBJECT, - .instance_size = sizeof(DeviceState), - .instance_init = device_initfn, - .instance_finalize = device_finalize, - .class_base_init = device_class_base_init, - .class_init = device_class_init, - .abstract = true, - .class_size = sizeof(DeviceClass), -}; - -static void qbus_initfn(Object *obj) -{ - BusState *bus = BUS(obj); - - QTAILQ_INIT(&bus->children); -} - -static void bus_class_init(ObjectClass *class, void *data) -{ - class->unparent = bus_unparent; -} - -static void qbus_finalize(Object *obj) -{ - BusState *bus = BUS(obj); - - g_free((char *)bus->name); -} - -static const TypeInfo bus_info = { - .name = TYPE_BUS, - .parent = TYPE_OBJECT, - .instance_size = sizeof(BusState), - .abstract = true, - .class_size = sizeof(BusClass), - .instance_init = qbus_initfn, - .instance_finalize = qbus_finalize, - .class_init = bus_class_init, -}; - -static void qdev_register_types(void) -{ - type_register_static(&bus_info); - type_register_static(&device_type_info); -} - -type_init(qdev_register_types) |