/*
 * Copyright (C) 2017-2018 Intel Corporation
 *
 * SPDX-License-Identifier: MIT
 *
 */

#include "runtime/helpers/hw_info.h"
#include "runtime/helpers/options.h"
#include "runtime/os_interface/device_factory.h"
#include "runtime/os_interface/linux/drm_neo.h"
#include "runtime/os_interface/hw_info_config.h"
#include "runtime/os_interface/linux/os_interface.h"
#include "drm/i915_drm.h"
#include "runtime/gmm_helper/gmm_helper.h"
#include "runtime/device/device.h"

#include <vector>
#include <cstring>

namespace OCLRT {

size_t DeviceFactory::numDevices = 0;
HardwareInfo *DeviceFactory::hwInfos = nullptr;

bool DeviceFactory::getDevices(HardwareInfo **pHWInfos, size_t &numDevices, ExecutionEnvironment &executionEnvironment) {
    std::vector<HardwareInfo> tHwInfos;
    unsigned int devNum = 0;
    size_t requiredDeviceCount = 1;

    if (DebugManager.flags.CreateMultipleDevices.get()) {
        requiredDeviceCount = DebugManager.flags.CreateMultipleDevices.get();
    }

    Drm *drm = Drm::create(devNum);
    if (!drm) {
        return false;
    }

    executionEnvironment.osInterface.reset(new OSInterface());
    executionEnvironment.osInterface->get()->setDrm(drm);

    const HardwareInfo *pCurrDevice = platformDevices[devNum];

    while (devNum < requiredDeviceCount) {
        HardwareInfo tmpHwInfo;
        HwInfoConfig *hwConfig = HwInfoConfig::get(pCurrDevice->pPlatform->eProductFamily);
        if (hwConfig->configureHwInfo(pCurrDevice, &tmpHwInfo, executionEnvironment.osInterface.get())) {
            return false;
        }
        tHwInfos.push_back(tmpHwInfo);
        devNum++;
    }

    HardwareInfo *ptr = new HardwareInfo[devNum];
    for (size_t i = 0; i < tHwInfos.size(); i++)
        ptr[i] = tHwInfos[i];

    numDevices = devNum;
    *pHWInfos = ptr;

    DeviceFactory::numDevices = devNum;
    DeviceFactory::hwInfos = ptr;

    return true;
}

void DeviceFactory::releaseDevices() {
    if (DeviceFactory::numDevices > 0) {
        for (unsigned int i = 0; i < DeviceFactory::numDevices; ++i) {
            Drm::closeDevice(i);
            delete hwInfos[i].pSysInfo;
            delete hwInfos[i].pSkuTable;
            delete hwInfos[i].pWaTable;
            delete hwInfos[i].pPlatform;
        }
        delete[] hwInfos;
    }
    DeviceFactory::hwInfos = nullptr;
    DeviceFactory::numDevices = 0;
}

void Device::appendOSExtensions(std::string &deviceExtensions) {
}
} // namespace OCLRT