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/*
* CAN generic CAN host connection support
*
* Copyright (c) 2013-2014 Jin Yang
* Copyright (c) 2014-2018 Pavel Pisa
*
* Initial development supported by Google GSoC 2013 from RTEMS project slot
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "chardev/char.h"
#include "qemu/module.h"
#include "qemu/sockets.h"
#include "qapi/error.h"
#include "qom/object_interfaces.h"
#include "net/can_emu.h"
#include "net/can_host.h"
struct CanBusState {
Object object;
QTAILQ_HEAD(, CanBusClientState) clients;
};
static void can_host_disconnect(CanHostState *ch)
{
CanHostClass *chc = CAN_HOST_GET_CLASS(ch);
can_bus_remove_client(&ch->bus_client);
chc->disconnect(ch);
}
static void can_host_connect(CanHostState *ch, Error **errp)
{
CanHostClass *chc = CAN_HOST_GET_CLASS(ch);
Error *local_err = NULL;
if (ch->bus == NULL) {
error_setg(errp, "'canbus' property not set");
return;
}
chc->connect(ch, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
can_bus_insert_client(ch->bus, &ch->bus_client);
}
static void can_host_unparent(Object *obj)
{
can_host_disconnect(CAN_HOST(obj));
}
static void can_host_complete(UserCreatable *uc, Error **errp)
{
can_host_connect(CAN_HOST(uc), errp);
}
static void can_host_class_init(ObjectClass *klass,
void *class_data G_GNUC_UNUSED)
{
UserCreatableClass *uc_klass = USER_CREATABLE_CLASS(klass);
object_class_property_add_link(klass, "canbus", TYPE_CAN_BUS,
offsetof(CanHostState, bus),
object_property_allow_set_link,
OBJ_PROP_LINK_STRONG);
klass->unparent = can_host_unparent;
uc_klass->complete = can_host_complete;
}
static const TypeInfo can_host_info = {
.parent = TYPE_OBJECT,
.name = TYPE_CAN_HOST,
.instance_size = sizeof(CanHostState),
.class_size = sizeof(CanHostClass),
.abstract = true,
.class_init = can_host_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_USER_CREATABLE },
{ }
}
};
static void can_host_register_types(void)
{
type_register_static(&can_host_info);
}
type_init(can_host_register_types);
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