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author | Chanho Park <chanho61.park@samsung.com> | 2014-12-10 15:42:55 +0900 |
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committer | Chanho Park <chanho61.park@samsung.com> | 2014-12-10 15:42:55 +0900 |
commit | 0d6a2f7e595218b5632ba7005128470e65138951 (patch) | |
tree | 596b09930ef1538e6606450e2d8b88ec2e296a9b /hw/core/qdev.c | |
parent | 16b1353a36171ae06d63fd309f4772dbfb1da113 (diff) | |
download | qemu-0d6a2f7e595218b5632ba7005128470e65138951.tar.gz qemu-0d6a2f7e595218b5632ba7005128470e65138951.tar.bz2 qemu-0d6a2f7e595218b5632ba7005128470e65138951.zip |
Imported Upstream version 2.2.0upstream/2.2.1upstream/2.2.0
Diffstat (limited to 'hw/core/qdev.c')
-rw-r--r-- | hw/core/qdev.c | 283 |
1 files changed, 226 insertions, 57 deletions
diff --git a/hw/core/qdev.c b/hw/core/qdev.c index da1ba48c9..35fd00d26 100644 --- a/hw/core/qdev.c +++ b/hw/core/qdev.c @@ -85,10 +85,6 @@ 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)); @@ -112,6 +108,24 @@ void qdev_set_parent_bus(DeviceState *dev, BusState *bus) bus_add_child(bus, dev); } +static void qbus_set_hotplug_handler_internal(BusState *bus, Object *handler, + Error **errp) +{ + + object_property_set_link(OBJECT(bus), OBJECT(handler), + QDEV_HOTPLUG_HANDLER_PROPERTY, errp); +} + +void qbus_set_hotplug_handler(BusState *bus, DeviceState *handler, Error **errp) +{ + qbus_set_hotplug_handler_internal(bus, OBJECT(handler), errp); +} + +void qbus_set_bus_hotplug_handler(BusState *bus, Error **errp) +{ + qbus_set_hotplug_handler_internal(bus, OBJECT(bus), errp); +} + /* 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. */ @@ -209,11 +223,30 @@ void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, dev->alias_required_for_version = required_for_version; } +static HotplugHandler *qdev_get_hotplug_handler(DeviceState *dev) +{ + HotplugHandler *hotplug_ctrl = NULL; + + if (dev->parent_bus && dev->parent_bus->hotplug_handler) { + hotplug_ctrl = dev->parent_bus->hotplug_handler; + } else if (object_dynamic_cast(qdev_get_machine(), TYPE_MACHINE)) { + MachineState *machine = MACHINE(qdev_get_machine()); + MachineClass *mc = MACHINE_GET_CLASS(machine); + + if (mc->get_hotplug_handler) { + hotplug_ctrl = mc->get_hotplug_handler(machine, dev); + } + } + return hotplug_ctrl; +} + void qdev_unplug(DeviceState *dev, Error **errp) { DeviceClass *dc = DEVICE_GET_CLASS(dev); + HotplugHandler *hotplug_ctrl; + HotplugHandlerClass *hdc; - if (dev->parent_bus && !dev->parent_bus->allow_hotplug) { + if (dev->parent_bus && !qbus_is_hotpluggable(dev->parent_bus)) { error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); return; } @@ -226,13 +259,18 @@ void qdev_unplug(DeviceState *dev, Error **errp) qdev_hot_removed = true; - if (dev->parent_bus && dev->parent_bus->hotplug_handler) { - hotplug_handler_unplug(dev->parent_bus->hotplug_handler, dev, errp); + hotplug_ctrl = qdev_get_hotplug_handler(dev); + /* hotpluggable device MUST have HotplugHandler, if it doesn't + * then something is very wrong with it */ + g_assert(hotplug_ctrl); + + /* If device supports async unplug just request it to be done, + * otherwise just remove it synchronously */ + hdc = HOTPLUG_HANDLER_GET_CLASS(hotplug_ctrl); + if (hdc->unplug_request) { + hotplug_handler_unplug_request(hotplug_ctrl, dev, errp); } else { - assert(dc->unplug != NULL); - if (dc->unplug(dev) < 0) { /* legacy handler */ - error_set(errp, QERR_UNDEFINED_ERROR); - } + hotplug_handler_unplug(hotplug_ctrl, dev, errp); } } @@ -269,14 +307,13 @@ void qbus_reset_all_fn(void *opaque) } /* can be used as ->unplug() callback for the simple cases */ -int qdev_simple_unplug_cb(DeviceState *dev) +void qdev_simple_device_unplug_cb(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) { /* just zap it */ object_unparent(OBJECT(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 @@ -337,10 +374,20 @@ static NamedGPIOList *qdev_get_named_gpio_list(DeviceState *dev, void qdev_init_gpio_in_named(DeviceState *dev, qemu_irq_handler handler, const char *name, int n) { + int i; NamedGPIOList *gpio_list = qdev_get_named_gpio_list(dev, name); + char *propname = g_strdup_printf("%s[*]", name ? name : "unnamed-gpio-in"); + assert(gpio_list->num_out == 0 || !name); gpio_list->in = qemu_extend_irqs(gpio_list->in, gpio_list->num_in, handler, dev, n); + + for (i = gpio_list->num_in; i < gpio_list->num_in + n; i++) { + object_property_add_child(OBJECT(dev), propname, + OBJECT(gpio_list->in[i]), &error_abort); + } + g_free(propname); + gpio_list->num_in += n; } @@ -352,11 +399,22 @@ void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) void qdev_init_gpio_out_named(DeviceState *dev, qemu_irq *pins, const char *name, int n) { + int i; NamedGPIOList *gpio_list = qdev_get_named_gpio_list(dev, name); - - assert(gpio_list->num_out == 0); - gpio_list->num_out = n; - gpio_list->out = pins; + char *propname = g_strdup_printf("%s[*]", name ? name : "unnamed-gpio-out"); + + assert(gpio_list->num_in == 0 || !name); + gpio_list->num_out += n; + + for (i = 0; i < n; ++i) { + memset(&pins[i], 0, sizeof(*pins)); + object_property_add_link(OBJECT(dev), propname, TYPE_IRQ, + (Object **)&pins[i], + object_property_allow_set_link, + OBJ_PROP_LINK_UNREF_ON_RELEASE, + &error_abort); + } + g_free(propname); } void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) @@ -380,10 +438,55 @@ qemu_irq qdev_get_gpio_in(DeviceState *dev, int n) void qdev_connect_gpio_out_named(DeviceState *dev, const char *name, int n, qemu_irq pin) { - NamedGPIOList *gpio_list = qdev_get_named_gpio_list(dev, name); + char *propname = g_strdup_printf("%s[%d]", + name ? name : "unnamed-gpio-out", n); + if (pin) { + /* We need a name for object_property_set_link to work. If the + * object has a parent, object_property_add_child will come back + * with an error without doing anything. If it has none, it will + * never fail. So we can just call it with a NULL Error pointer. + */ + object_property_add_child(qdev_get_machine(), "non-qdev-gpio[*]", + OBJECT(pin), NULL); + } + object_property_set_link(OBJECT(dev), OBJECT(pin), propname, &error_abort); + g_free(propname); +} + +qemu_irq qdev_get_gpio_out_connector(DeviceState *dev, const char *name, int n) +{ + char *propname = g_strdup_printf("%s[%d]", + name ? name : "unnamed-gpio-out", n); + + qemu_irq ret = (qemu_irq)object_property_get_link(OBJECT(dev), propname, + NULL); + + return ret; +} + +/* disconnect a GPIO ouput, returning the disconnected input (if any) */ + +static qemu_irq qdev_disconnect_gpio_out_named(DeviceState *dev, + const char *name, int n) +{ + char *propname = g_strdup_printf("%s[%d]", + name ? name : "unnamed-gpio-out", n); + + qemu_irq ret = (qemu_irq)object_property_get_link(OBJECT(dev), propname, + NULL); + if (ret) { + object_property_set_link(OBJECT(dev), NULL, propname, NULL); + } + g_free(propname); + return ret; +} - assert(n >= 0 && n < gpio_list->num_out); - gpio_list->out[n] = pin; +qemu_irq qdev_intercept_gpio_out(DeviceState *dev, qemu_irq icpt, + const char *name, int n) +{ + qemu_irq disconnected = qdev_disconnect_gpio_out_named(dev, name, n); + qdev_connect_gpio_out_named(dev, name, n, icpt); + return disconnected; } void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) @@ -391,6 +494,32 @@ void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) qdev_connect_gpio_out_named(dev, NULL, n, pin); } +void qdev_pass_gpios(DeviceState *dev, DeviceState *container, + const char *name) +{ + int i; + NamedGPIOList *ngl = qdev_get_named_gpio_list(dev, name); + + for (i = 0; i < ngl->num_in; i++) { + const char *nm = ngl->name ? ngl->name : "unnamed-gpio-in"; + char *propname = g_strdup_printf("%s[%d]", nm, i); + + object_property_add_alias(OBJECT(container), propname, + OBJECT(dev), propname, + &error_abort); + } + for (i = 0; i < ngl->num_out; i++) { + const char *nm = ngl->name ? ngl->name : "unnamed-gpio-out"; + char *propname = g_strdup_printf("%s[%d]", nm, i); + + object_property_add_alias(OBJECT(container), propname, + OBJECT(dev), propname, + &error_abort); + } + QLIST_REMOVE(ngl, node); + QLIST_INSERT_HEAD(&container->gpios, ngl, node); +} + BusState *qdev_get_child_bus(DeviceState *dev, const char *name) { BusState *bus; @@ -766,6 +895,11 @@ void qdev_property_add_static(DeviceState *dev, Property *prop, error_propagate(errp, local_err); return; } + + object_property_set_description(obj, prop->name, + prop->info->description, + &error_abort); + if (prop->qtype == QTYPE_NONE) { return; } @@ -801,6 +935,27 @@ void qdev_alias_all_properties(DeviceState *target, Object *source) } while (class != object_class_by_name(TYPE_DEVICE)); } +static int qdev_add_hotpluggable_device(Object *obj, void *opaque) +{ + GSList **list = opaque; + DeviceState *dev = DEVICE(obj); + + if (dev->realized && object_property_get_bool(obj, "hotpluggable", NULL)) { + *list = g_slist_append(*list, dev); + } + + return 0; +} + +GSList *qdev_build_hotpluggable_device_list(Object *peripheral) +{ + GSList *list = NULL; + + object_child_foreach(peripheral, qdev_add_hotpluggable_device, &list); + + return list; +} + static bool device_get_realized(Object *obj, Error **errp) { DeviceState *dev = DEVICE(obj); @@ -811,6 +966,7 @@ static void device_set_realized(Object *obj, bool value, Error **errp) { DeviceState *dev = DEVICE(obj); DeviceClass *dc = DEVICE_GET_CLASS(dev); + HotplugHandler *hotplug_ctrl; BusState *bus; Error *local_err = NULL; @@ -820,13 +976,13 @@ static void device_set_realized(Object *obj, bool value, Error **errp) } if (value && !dev->realized) { - if (!obj->parent && local_err == NULL) { + if (!obj->parent) { 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); + name, obj, &error_abort); g_free(name); } @@ -834,65 +990,78 @@ static void device_set_realized(Object *obj, bool value, Error **errp) dc->realize(dev, &local_err); } - if (dev->parent_bus && dev->parent_bus->hotplug_handler && - local_err == NULL) { - hotplug_handler_plug(dev->parent_bus->hotplug_handler, - dev, &local_err); - } else if (local_err == NULL && - object_dynamic_cast(qdev_get_machine(), TYPE_MACHINE)) { - HotplugHandler *hotplug_ctrl; - MachineState *machine = MACHINE(qdev_get_machine()); - MachineClass *mc = MACHINE_GET_CLASS(machine); - - if (mc->get_hotplug_handler) { - hotplug_ctrl = mc->get_hotplug_handler(machine, dev); - if (hotplug_ctrl) { - hotplug_handler_plug(hotplug_ctrl, dev, &local_err); - } - } + if (local_err != NULL) { + goto fail; + } + + hotplug_ctrl = qdev_get_hotplug_handler(dev); + if (hotplug_ctrl) { + hotplug_handler_plug(hotplug_ctrl, dev, &local_err); + } + + if (local_err != NULL) { + goto post_realize_fail; } - if (qdev_get_vmsd(dev) && local_err == NULL) { + if (qdev_get_vmsd(dev)) { vmstate_register_with_alias_id(dev, -1, qdev_get_vmsd(dev), dev, dev->instance_id_alias, dev->alias_required_for_version); } - if (local_err == NULL) { - QLIST_FOREACH(bus, &dev->child_bus, sibling) { - object_property_set_bool(OBJECT(bus), true, "realized", + + QLIST_FOREACH(bus, &dev->child_bus, sibling) { + object_property_set_bool(OBJECT(bus), true, "realized", &local_err); - if (local_err != NULL) { - break; - } + if (local_err != NULL) { + goto child_realize_fail; } } - if (dev->hotplugged && local_err == NULL) { + if (dev->hotplugged) { device_reset(dev); } dev->pending_deleted_event = false; } else if (!value && dev->realized) { + Error **local_errp = NULL; QLIST_FOREACH(bus, &dev->child_bus, sibling) { + local_errp = local_err ? NULL : &local_err; object_property_set_bool(OBJECT(bus), false, "realized", - &local_err); - if (local_err != NULL) { - break; - } + local_errp); } - if (qdev_get_vmsd(dev) && local_err == NULL) { + if (qdev_get_vmsd(dev)) { vmstate_unregister(dev, qdev_get_vmsd(dev), dev); } - if (dc->unrealize && local_err == NULL) { - dc->unrealize(dev, &local_err); + if (dc->unrealize) { + local_errp = local_err ? NULL : &local_err; + dc->unrealize(dev, local_errp); } dev->pending_deleted_event = true; } if (local_err != NULL) { - error_propagate(errp, local_err); - return; + goto fail; } dev->realized = value; + return; + +child_realize_fail: + QLIST_FOREACH(bus, &dev->child_bus, sibling) { + object_property_set_bool(OBJECT(bus), false, "realized", + NULL); + } + + if (qdev_get_vmsd(dev)) { + vmstate_unregister(dev, qdev_get_vmsd(dev), dev); + } + +post_realize_fail: + if (dc->unrealize) { + dc->unrealize(dev, NULL); + } + +fail: + error_propagate(errp, local_err); + return; } static bool device_get_hotpluggable(Object *obj, Error **errp) @@ -901,7 +1070,7 @@ static bool device_get_hotpluggable(Object *obj, Error **errp) DeviceState *dev = DEVICE(obj); return dc->hotpluggable && (dev->parent_bus == NULL || - dev->parent_bus->allow_hotplug); + qbus_is_hotpluggable(dev->parent_bus)); } static bool device_get_hotplugged(Object *obj, Error **err) |