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/*
* Copyright (C) 2019-2020 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/device/root_device.h"
#include "shared/source/command_stream/command_stream_receiver.h"
#include "shared/source/command_stream/preemption.h"
#include "shared/source/debug_settings/debug_settings_manager.h"
#include "shared/source/device/sub_device.h"
#include "shared/source/helpers/hw_helper.h"
#include "shared/source/memory_manager/memory_manager.h"
namespace NEO {
extern CommandStreamReceiver *createCommandStream(ExecutionEnvironment &executionEnvironment, uint32_t rootDeviceIndex);
RootDevice::RootDevice(ExecutionEnvironment *executionEnvironment, uint32_t rootDeviceIndex) : Device(executionEnvironment), rootDeviceIndex(rootDeviceIndex) {}
RootDevice::~RootDevice() {
for (auto subdevice : subdevices) {
if (subdevice) {
delete subdevice;
}
}
}
uint32_t RootDevice::getNumSubDevices() const {
return static_cast<uint32_t>(subdevices.size());
}
uint32_t RootDevice::getRootDeviceIndex() const {
return rootDeviceIndex;
}
uint32_t RootDevice::getNumAvailableDevices() const {
if (subdevices.empty()) {
return 1u;
}
return getNumSubDevices();
}
Device *RootDevice::getDeviceById(uint32_t deviceId) const {
UNRECOVERABLE_IF(deviceId >= getNumAvailableDevices());
if (subdevices.empty()) {
return const_cast<RootDevice *>(this);
}
return subdevices[deviceId];
}
Device *RootDevice::getParentDevice() const {
return nullptr;
}
SubDevice *RootDevice::createSubDevice(uint32_t subDeviceIndex) {
return Device::create<SubDevice>(executionEnvironment, subDeviceIndex, *this);
}
bool RootDevice::createDeviceImpl() {
auto numSubDevices = HwHelper::getSubDevicesCount(&getHardwareInfo());
if (numSubDevices == 1) {
numSubDevices = 0;
}
UNRECOVERABLE_IF(!subdevices.empty());
subdevices.resize(numSubDevices, nullptr);
for (auto i = 0u; i < numSubDevices; i++) {
auto subDevice = createSubDevice(i);
if (!subDevice) {
return false;
}
subdevices[i] = subDevice;
}
auto status = Device::createDeviceImpl();
if (!status) {
return status;
}
return true;
}
DeviceBitfield RootDevice::getDeviceBitfield() const {
DeviceBitfield deviceBitfield{static_cast<uint32_t>(maxNBitValue(getNumAvailableDevices()))};
return deviceBitfield;
}
bool RootDevice::createEngines() {
if (getNumSubDevices() < 2) {
return Device::createEngines();
} else {
initializeRootCommandStreamReceiver();
}
return true;
}
void RootDevice::initializeRootCommandStreamReceiver() {
std::unique_ptr<CommandStreamReceiver> rootCommandStreamReceiver(createCommandStream(*executionEnvironment, rootDeviceIndex));
auto &hwInfo = getHardwareInfo();
auto defaultEngineType = getChosenEngineType(hwInfo);
auto preemptionMode = PreemptionHelper::getDefaultPreemptionMode(hwInfo);
auto osContext = getMemoryManager()->createAndRegisterOsContext(rootCommandStreamReceiver.get(), defaultEngineType,
getDeviceBitfield(), preemptionMode, false, false, true);
rootCommandStreamReceiver->setupContext(*osContext);
rootCommandStreamReceiver->initializeTagAllocation();
rootCommandStreamReceiver->createGlobalFenceAllocation();
commandStreamReceivers.push_back(std::move(rootCommandStreamReceiver));
engines.emplace_back(commandStreamReceivers.back().get(), osContext);
}
} // namespace NEO
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