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/*
* Copyright (c) 2020 Arm Limited. All rights reserved.
*
* 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.
*/
#pragma once
#include <algorithm>
#include <memory>
#include <string>
#include <vector>
namespace EthosU {
class Exception : public std::exception {
public:
Exception(const char *msg);
virtual ~Exception() throw();
virtual const char *what() const throw();
private:
std::string msg;
};
class Device {
public:
Device(const char *device = "/dev/ethosu0");
virtual ~Device();
int ioctl(unsigned long cmd, void *data = nullptr);
private:
int fd;
};
class Buffer {
public:
Buffer(Device &device, const size_t capacity);
virtual ~Buffer();
size_t capacity() const;
void clear();
char *data();
void resize(size_t size, size_t offset = 0);
size_t offset() const;
size_t size() const;
int getFd() const;
private:
int fd;
char *dataPtr;
const size_t dataCapacity;
};
class Network {
public:
Network(Device &device, std::shared_ptr<Buffer> &buffer);
virtual ~Network();
int ioctl(unsigned long cmd, void *data = nullptr);
std::shared_ptr<Buffer> getBuffer();
const std::vector<size_t> &getIfmDims() const;
size_t getIfmSize() const;
const std::vector<size_t> &getOfmDims() const;
size_t getOfmSize() const;
private:
int fd;
std::shared_ptr<Buffer> buffer;
std::vector<size_t> ifmDims;
std::vector<size_t> ofmDims;
};
class Inference {
public:
template <typename T>
Inference(std::shared_ptr<Network> &network,
const T &ifmBegin,
const T &ifmEnd,
const T &ofmBegin,
const T &ofmEnd) :
network(network) {
std::copy(ifmBegin, ifmEnd, std::back_inserter(ifmBuffers));
std::copy(ofmBegin, ofmEnd, std::back_inserter(ofmBuffers));
std::vector<uint32_t> counterConfigs = initializeCounterConfig();
create(counterConfigs, false);
}
template <typename T, typename U>
Inference(std::shared_ptr<Network> &network,
const T &ifmBegin,
const T &ifmEnd,
const T &ofmBegin,
const T &ofmEnd,
const U &counters,
bool enableCycleCounter) :
network(network) {
std::copy(ifmBegin, ifmEnd, std::back_inserter(ifmBuffers));
std::copy(ofmBegin, ofmEnd, std::back_inserter(ofmBuffers));
std::vector<uint32_t> counterConfigs = initializeCounterConfig();
if (counters.size() > counterConfigs.size())
throw EthosU::Exception("PMU Counters argument to large.");
std::copy(counters.begin(), counters.end(), counterConfigs.begin());
create(counterConfigs, enableCycleCounter);
}
virtual ~Inference();
int wait(int timeoutSec = -1);
const std::vector<uint32_t> getPmuCounters();
uint64_t getCycleCounter();
bool failed();
int getFd();
std::shared_ptr<Network> getNetwork();
std::vector<std::shared_ptr<Buffer>> &getIfmBuffers();
std::vector<std::shared_ptr<Buffer>> &getOfmBuffers();
static uint32_t getMaxPmuEventCounters();
private:
void create(std::vector<uint32_t> &counterConfigs, bool enableCycleCounter);
std::vector<uint32_t> initializeCounterConfig();
int fd;
std::shared_ptr<Network> network;
std::vector<std::shared_ptr<Buffer>> ifmBuffers;
std::vector<std::shared_ptr<Buffer>> ofmBuffers;
};
} // namespace EthosU
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