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/*
* Copyright (c) 2022 Arm Limited.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "FreeRTOS.h"
#include "task.h"
#include "ethosu_core_interface.h"
#include "message_client.hpp"
using namespace EthosU;
namespace MessageHandler {
MessageClient::MessageClient(EthosU::ethosu_core_queue &_inputMessageQueue,
EthosU::ethosu_core_queue &_outputMessageQueue,
Mailbox::Mailbox &_mailbox) :
input(_inputMessageQueue),
output(_outputMessageQueue), mailbox(_mailbox) {}
bool MessageClient::sendInputMessage(const uint32_t type, const void *src, uint32_t length) {
if (!input.write(type, src, length)) {
printf("ERROR: Msg: Failed to write message request. No mailbox message sent\n");
return false;
}
mailbox.sendMessage();
mailbox.handleMessage();
return true;
}
bool MessageClient::waitAndReadOutputMessage(const uint32_t expected_type, uint8_t *dst, uint32_t length) {
constexpr TickType_t delay = pdMS_TO_TICKS(5);
constexpr TickType_t deadline = pdMS_TO_TICKS(/* 1 minute */ 60 * 1000 * 1000);
struct ethosu_core_msg msg;
TickType_t totalDelay = 0;
while (output.available() == 0) {
vTaskDelay(delay);
totalDelay += delay;
if (totalDelay >= deadline) {
return false;
}
}
if (!output.read(msg)) {
printf("ERROR: Failed to read msg header\n");
return false;
}
if (msg.magic != ETHOSU_CORE_MSG_MAGIC) {
printf("ERROR: Invalid Magic\n");
return false;
}
if (msg.type != expected_type) {
printf("ERROR: Wrong message type. Got %" PRIu32 " expected %" PRIu32 "\n", msg.type, expected_type);
return false;
}
if (msg.length != length) {
printf("ERROR: Wrong message size\n");
return false;
}
if (length == 0) {
return true;
}
if (!output.read(dst, length)) {
printf("ERROR: Failed to read msg payload\n");
return false;
}
return true;
}
} // namespace MessageHandler
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