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 "rss_comms_protocol_pointer_access.h" 10 11 #define TYPE_OFFSET (16U) 12 #define TYPE_MASK (0xFFFFUL << TYPE_OFFSET) 13 #define IN_LEN_OFFSET (8U) 14 #define IN_LEN_MASK (0xFFUL << IN_LEN_OFFSET) 15 #define OUT_LEN_OFFSET (0U) 16 #define OUT_LEN_MASK (0xFFUL << OUT_LEN_OFFSET) 17 18 #define PARAM_PACK(type, in_len, out_len) \ 19 (((((uint32_t)type) << TYPE_OFFSET) & TYPE_MASK) | \ 20 ((((uint32_t)in_len) << IN_LEN_OFFSET) & IN_LEN_MASK) | \ 21 ((((uint32_t)out_len) << OUT_LEN_OFFSET) & OUT_LEN_MASK)) 22 23 psa_status_t rss_protocol_pointer_access_serialize_msg(psa_handle_t handle, 24 int16_t type, 25 const psa_invec *in_vec, 26 uint8_t in_len, 27 const psa_outvec *out_vec, 28 uint8_t out_len, 29 struct rss_pointer_access_msg_t *msg, 30 size_t *msg_len) 31 { 32 unsigned int i; 33 34 assert(msg != NULL); 35 assert(msg_len != NULL); 36 assert(in_vec != NULL); 37 38 msg->ctrl_param = PARAM_PACK(type, in_len, out_len); 39 msg->handle = handle; 40 41 /* Fill msg iovec lengths */ 42 for (i = 0U; i < in_len; ++i) { 43 msg->io_sizes[i] = in_vec[i].len; 44 msg->host_ptrs[i] = (uint64_t)in_vec[i].base; 45 } 46 for (i = 0U; i < out_len; ++i) { 47 msg->io_sizes[in_len + i] = out_vec[i].len; 48 msg->host_ptrs[in_len + i] = (uint64_t)out_vec[i].base; 49 } 50 51 *msg_len = sizeof(*msg); 52 53 return PSA_SUCCESS; 54 } 55 56 psa_status_t rss_protocol_pointer_access_deserialize_reply(psa_outvec *out_vec, 57 uint8_t out_len, 58 psa_status_t *return_val, 59 const struct rss_pointer_access_reply_t *reply, 60 size_t reply_size) 61 { 62 unsigned int i; 63 64 assert(reply != NULL); 65 assert(return_val != NULL); 66 67 for (i = 0U; i < out_len; ++i) { 68 out_vec[i].len = reply->out_sizes[i]; 69 } 70 71 *return_val = reply->return_val; 72 73 return PSA_SUCCESS; 74 } 75