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/*
* Copyright (C) 2023-2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "level_zero/sysman/source/shared/linux/sysman_hw_device_id_linux.h"
#include "shared/source/os_interface/linux/sys_calls.h"
#include "level_zero/sysman/source/device/sysman_hw_device_id.h"
#include <fcntl.h>
namespace L0 {
namespace Sysman {
int SysmanHwDeviceIdDrm::openFileDescriptor() {
std::unique_lock<std::mutex> lock(fdMutex);
if (fileDescriptor == -1) {
fileDescriptor = NEO::SysCalls::open(devNodePath.c_str(), O_RDWR);
}
++fdRefCounter;
return fileDescriptor;
}
int SysmanHwDeviceIdDrm::closeFileDescriptor() {
int closeStatus = 0;
std::unique_lock<std::mutex> lock(fdMutex);
DEBUG_BREAK_IF(fdRefCounter == 0u);
if (fdRefCounter > 0u) {
--fdRefCounter;
if (fdRefCounter == 0u && fileDescriptor >= 0) {
closeStatus = NEO::SysCalls::close(fileDescriptor);
fileDescriptor = -1;
}
}
return closeStatus;
}
std::unique_ptr<NEO::HwDeviceId> createSysmanHwDeviceId(std::unique_ptr<NEO::HwDeviceId> &hwDeviceId) {
if (hwDeviceId->getDriverModelType() != NEO::DriverModelType::drm) {
return std::move(hwDeviceId);
}
const auto hwDeviceIdDrm = static_cast<NEO::HwDeviceIdDrm *>(hwDeviceId.get());
return std::make_unique<SysmanHwDeviceIdDrm>(hwDeviceIdDrm->getFileDescriptor(), hwDeviceIdDrm->getPciPath(), hwDeviceIdDrm->getDeviceNode());
}
} // namespace Sysman
} // namespace L0
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