1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <interface/smc/smc.h> 20 #include <lk/compiler.h> 21 #include <trusty_ipc.h> 22 23 __BEGIN_CDECLS 24 25 /** 26 * smc_send_request() - send message to SMC service 27 * @channel: handle to the channel to send message over 28 * @msg: pointer to the message to be sent 29 * 30 * Return: the total number of bytes sent on success, a negative error code 31 * otherwise. 32 */ 33 int smc_send_request(handle_t channel, struct smc_msg* msg); 34 35 /** 36 * smc_read_response() - read message from SMC service 37 * @channel: handle to the channel to read message from 38 * @msg: pointer to memory where read message is placed 39 * 40 * Return: the number of bytes stored into memory pointed to by @msg parameter 41 * on success, a negative error code otherwise 42 */ 43 int smc_read_response(handle_t channel, struct smc_msg* msg); 44 45 __END_CDECLS 46