1/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
2/*
3 * Copyright(c) 2016 Google Inc. All rights reserved.
4 * Copyright(c) 2016 Linaro Ltd. All rights reserved.
5 */
6
7#ifndef __ARPC_H
8#define __ARPC_H
9
10/* APBridgeA RPC (ARPC) */
11
12enum arpc_result {
13 ARPC_SUCCESS = 0x00,
14 ARPC_NO_MEMORY = 0x01,
15 ARPC_INVALID = 0x02,
16 ARPC_TIMEOUT = 0x03,
17 ARPC_UNKNOWN_ERROR = 0xff,
18};
19
20struct arpc_request_message {
21 __le16 id; /* RPC unique id */
22 __le16 size; /* Size in bytes of header + payload */
23 __u8 type; /* RPC type */
24 __u8 data[]; /* ARPC data */
25} __packed;
26
27struct arpc_response_message {
28 __le16 id; /* RPC unique id */
29 __u8 result; /* Result of RPC */
30} __packed;
31
32/* ARPC requests */
33#define ARPC_TYPE_CPORT_CONNECTED 0x01
34#define ARPC_TYPE_CPORT_QUIESCE 0x02
35#define ARPC_TYPE_CPORT_CLEAR 0x03
36#define ARPC_TYPE_CPORT_FLUSH 0x04
37#define ARPC_TYPE_CPORT_SHUTDOWN 0x05
38
39struct arpc_cport_connected_req {
40 __le16 cport_id;
41} __packed;
42
43struct arpc_cport_quiesce_req {
44 __le16 cport_id;
45 __le16 peer_space;
46 __le16 timeout;
47} __packed;
48
49struct arpc_cport_clear_req {
50 __le16 cport_id;
51} __packed;
52
53struct arpc_cport_flush_req {
54 __le16 cport_id;
55} __packed;
56
57struct arpc_cport_shutdown_req {
58 __le16 cport_id;
59 __le16 timeout;
60 __u8 phase;
61} __packed;
62
63#endif /* __ARPC_H */
64

source code of linux/drivers/greybus/arpc.h