1 /*
2 * Copyright (c) 2022, Arm Limited. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 *
6 */
7 #include <assert.h>
8
9 #include <common/debug.h>
10 #include "rse_comms_protocol.h"
11
rse_protocol_serialize_msg(psa_handle_t handle,int16_t type,const psa_invec * in_vec,uint8_t in_len,const psa_outvec * out_vec,uint8_t out_len,struct serialized_rse_comms_msg_t * msg,size_t * msg_len)12 psa_status_t rse_protocol_serialize_msg(psa_handle_t handle,
13 int16_t type,
14 const psa_invec *in_vec,
15 uint8_t in_len,
16 const psa_outvec *out_vec,
17 uint8_t out_len,
18 struct serialized_rse_comms_msg_t *msg,
19 size_t *msg_len)
20 {
21 psa_status_t status;
22
23 assert(msg != NULL);
24 assert(msg_len != NULL);
25 assert((in_len == 0u) || (in_vec != NULL));
26 assert((out_len == 0u) || (out_vec != NULL));
27
28 switch (msg->header.protocol_ver) {
29 case RSE_COMMS_PROTOCOL_EMBED:
30 status = rse_protocol_embed_serialize_msg(handle, type, in_vec, in_len, out_vec,
31 out_len, &msg->msg.embed, msg_len);
32 if (status != PSA_SUCCESS) {
33 return status;
34 }
35 break;
36 case RSE_COMMS_PROTOCOL_POINTER_ACCESS:
37 status = rse_protocol_pointer_access_serialize_msg(handle, type, in_vec, in_len,
38 out_vec, out_len,
39 &msg->msg.pointer_access,
40 msg_len);
41 if (status != PSA_SUCCESS) {
42 return status;
43 }
44 break;
45 default:
46 return PSA_ERROR_NOT_SUPPORTED;
47 }
48
49 *msg_len += sizeof(struct serialized_rse_comms_header_t);
50
51 return PSA_SUCCESS;
52 }
53
rse_protocol_deserialize_reply(psa_outvec * out_vec,uint8_t out_len,psa_status_t * return_val,const struct serialized_rse_comms_reply_t * reply,size_t reply_size)54 psa_status_t rse_protocol_deserialize_reply(psa_outvec *out_vec,
55 uint8_t out_len,
56 psa_status_t *return_val,
57 const struct serialized_rse_comms_reply_t *reply,
58 size_t reply_size)
59 {
60 assert(reply != NULL);
61 assert(return_val != NULL);
62
63 switch (reply->header.protocol_ver) {
64 case RSE_COMMS_PROTOCOL_EMBED:
65 return rse_protocol_embed_deserialize_reply(out_vec, out_len, return_val,
66 &reply->reply.embed, reply_size);
67 case RSE_COMMS_PROTOCOL_POINTER_ACCESS:
68 return rse_protocol_pointer_access_deserialize_reply(out_vec, out_len, return_val,
69 &reply->reply.pointer_access,
70 reply_size);
71 default:
72 return PSA_ERROR_NOT_SUPPORTED;
73 }
74
75 return PSA_SUCCESS;
76 }
77