drivers/greybus/arpc.h

   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
  12 enum 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
  20 struct 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[0];        /* ARPC data */
  25 } __packed;
  26
  27 struct 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
  39 struct arpc_cport_connected_req {
  40         __le16 cport_id;
  41 } __packed;
  42
  43 struct arpc_cport_quiesce_req {
  44         __le16 cport_id;
  45         __le16 peer_space;
  46         __le16 timeout;
  47 } __packed;
  48
  49 struct arpc_cport_clear_req {
  50         __le16 cport_id;
  51 } __packed;
  52
  53 struct arpc_cport_flush_req {
  54         __le16 cport_id;
  55 } __packed;
  56
  57 struct arpc_cport_shutdown_req {
  58         __le16 cport_id;
  59         __le16 timeout;
  60         __u8 phase;
  61 } __packed;
  62
  63 #endif  /* __ARPC_H */