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d18957db PP |
1 | /* |
2 | * CAN generic CAN host connection support | |
3 | * | |
4 | * Copyright (c) 2013-2014 Jin Yang | |
5 | * Copyright (c) 2014-2018 Pavel Pisa | |
6 | * | |
7 | * Initial development supported by Google GSoC 2013 from RTEMS project slot | |
8 | * | |
9 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
10 | * of this software and associated documentation files (the "Software"), to deal | |
11 | * in the Software without restriction, including without limitation the rights | |
12 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
13 | * copies of the Software, and to permit persons to whom the Software is | |
14 | * furnished to do so, subject to the following conditions: | |
15 | * | |
16 | * The above copyright notice and this permission notice shall be included in | |
17 | * all copies or substantial portions of the Software. | |
18 | * | |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
22 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
23 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
24 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
25 | * THE SOFTWARE. | |
26 | */ | |
0b8fa32f | 27 | |
d18957db PP |
28 | #include "qemu/osdep.h" |
29 | #include "chardev/char.h" | |
0b8fa32f | 30 | #include "qemu/module.h" |
d18957db PP |
31 | #include "qemu/sockets.h" |
32 | #include "qapi/error.h" | |
33 | #include "qom/object_interfaces.h" | |
34 | #include "net/can_emu.h" | |
35 | #include "net/can_host.h" | |
36 | ||
37 | struct CanBusState { | |
38 | Object object; | |
39 | ||
40 | QTAILQ_HEAD(, CanBusClientState) clients; | |
41 | }; | |
42 | ||
43 | static void can_host_disconnect(CanHostState *ch) | |
44 | { | |
45 | CanHostClass *chc = CAN_HOST_GET_CLASS(ch); | |
46 | ||
47 | can_bus_remove_client(&ch->bus_client); | |
48 | chc->disconnect(ch); | |
49 | } | |
50 | ||
51 | static void can_host_connect(CanHostState *ch, Error **errp) | |
52 | { | |
53 | CanHostClass *chc = CAN_HOST_GET_CLASS(ch); | |
54 | Error *local_err = NULL; | |
55 | ||
56 | chc->connect(ch, &local_err); | |
57 | if (local_err) { | |
58 | error_propagate(errp, local_err); | |
59 | return; | |
60 | } | |
61 | ||
62 | can_bus_insert_client(ch->bus, &ch->bus_client); | |
63 | } | |
64 | ||
65 | static void can_host_unparent(Object *obj) | |
66 | { | |
67 | can_host_disconnect(CAN_HOST(obj)); | |
68 | } | |
69 | ||
70 | static void can_host_complete(UserCreatable *uc, Error **errp) | |
71 | { | |
72 | can_host_connect(CAN_HOST(uc), errp); | |
73 | } | |
74 | ||
75 | static void can_host_instance_init(Object *obj) | |
76 | { | |
77 | CanHostState *ch = CAN_HOST(obj); | |
78 | ||
79 | object_property_add_link(obj, "canbus", TYPE_CAN_BUS, | |
80 | (Object **)&ch->bus, | |
81 | object_property_allow_set_link, | |
265b578c | 82 | OBJ_PROP_LINK_STRONG, |
d18957db PP |
83 | &error_abort); |
84 | } | |
85 | ||
86 | static void can_host_class_init(ObjectClass *klass, | |
87 | void *class_data G_GNUC_UNUSED) | |
88 | { | |
89 | UserCreatableClass *uc_klass = USER_CREATABLE_CLASS(klass); | |
90 | ||
91 | klass->unparent = can_host_unparent; | |
92 | uc_klass->complete = can_host_complete; | |
93 | } | |
94 | ||
95 | static const TypeInfo can_host_info = { | |
96 | .parent = TYPE_OBJECT, | |
97 | .name = TYPE_CAN_HOST, | |
98 | .instance_size = sizeof(CanHostState), | |
99 | .class_size = sizeof(CanHostClass), | |
100 | .abstract = true, | |
101 | .instance_init = can_host_instance_init, | |
102 | .class_init = can_host_class_init, | |
103 | .interfaces = (InterfaceInfo[]) { | |
104 | { TYPE_USER_CREATABLE }, | |
105 | { } | |
106 | } | |
107 | }; | |
108 | ||
109 | static void can_host_register_types(void) | |
110 | { | |
111 | type_register_static(&can_host_info); | |
112 | } | |
113 | ||
114 | type_init(can_host_register_types); |