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/*
* Copyright (C) 2020-2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "program_initialization.h"
#include "shared/source/command_stream/command_stream_receiver.h"
#include "shared/source/compiler_interface/linker.h"
#include "shared/source/device/device.h"
#include "shared/source/helpers/blit_commands_helper.h"
#include "shared/source/helpers/gfx_core_helper.h"
#include "shared/source/helpers/string.h"
#include "shared/source/memory_manager/allocation_properties.h"
#include "shared/source/memory_manager/memory_manager.h"
#include "shared/source/memory_manager/unified_memory_manager.h"
#include "shared/source/memory_manager/unified_memory_pooling.h"
#include "shared/source/program/program_info.h"
#include <mutex>
namespace NEO {
SharedPoolAllocation *allocateGlobalsSurface(NEO::SVMAllocsManager *const svmAllocManager, NEO::Device &device, size_t totalSize, size_t zeroInitSize, bool constant,
LinkerInput *const linkerInput, const void *initData) {
size_t allocationOffset{0u};
size_t allocatedSize{0u};
bool globalsAreExported = false;
GraphicsAllocation *gpuAllocation = nullptr;
bool isAllocatedFromPool = false;
std::mutex *usmAllocPoolMutex = nullptr;
SharedPoolAllocation *globalSurfaceAllocation = nullptr;
const auto rootDeviceIndex = device.getRootDeviceIndex();
const auto deviceBitfield = device.getDeviceBitfield();
if (linkerInput != nullptr) {
globalsAreExported = constant ? linkerInput->getTraits().exportsGlobalConstants : linkerInput->getTraits().exportsGlobalVariables;
}
const auto allocationType = constant ? AllocationType::constantSurface : AllocationType::globalSurface;
if (globalsAreExported && (svmAllocManager != nullptr)) {
RootDeviceIndicesContainer rootDeviceIndices;
rootDeviceIndices.pushUnique(rootDeviceIndex);
std::map<uint32_t, DeviceBitfield> subDeviceBitfields;
subDeviceBitfields.insert({rootDeviceIndex, deviceBitfield});
NEO::SVMAllocsManager::UnifiedMemoryProperties unifiedMemoryProperties(InternalMemoryType::deviceUnifiedMemory, 1, rootDeviceIndices, subDeviceBitfields);
unifiedMemoryProperties.device = &device;
unifiedMemoryProperties.requestedAllocationType = allocationType;
unifiedMemoryProperties.isInternalAllocation = true;
UsmMemAllocPool *allocPool = nullptr;
if (allocationType == AllocationType::constantSurface) {
allocPool = device.getUsmConstantSurfaceAllocPool();
} else {
allocPool = device.getUsmGlobalSurfaceAllocPool();
}
if (allocPool && device.getProductHelper().is2MBLocalMemAlignmentEnabled()) {
if (!allocPool->isInitialized()) {
constexpr size_t alignment = MemoryConstants::pageSize2M;
constexpr size_t poolSize = MemoryConstants::pageSize2M;
constexpr size_t minServicedSize = 0u;
constexpr size_t maxServicedSize = 2 * MemoryConstants::megaByte;
NEO::SVMAllocsManager::UnifiedMemoryProperties poolMemoryProperties(InternalMemoryType::deviceUnifiedMemory, alignment, rootDeviceIndices, subDeviceBitfields);
poolMemoryProperties.device = &device;
poolMemoryProperties.requestedAllocationType = allocationType;
poolMemoryProperties.isInternalAllocation = true;
allocPool->initialize(svmAllocManager, poolMemoryProperties, poolSize, minServicedSize, maxServicedSize);
}
if (allocPool->isInitialized()) {
unifiedMemoryProperties.alignment = MemoryConstants::pageSize;
auto pooledPtr = allocPool->createUnifiedMemoryAllocation(totalSize, unifiedMemoryProperties);
if (pooledPtr) {
allocationOffset = allocPool->getOffsetInPool(pooledPtr);
allocatedSize = allocPool->getPooledAllocationSize(pooledPtr);
auto usmAlloc = svmAllocManager->getSVMAlloc(reinterpret_cast<void *>(allocPool->getPoolAddress()));
UNRECOVERABLE_IF(usmAlloc == nullptr);
gpuAllocation = usmAlloc->gpuAllocations.getGraphicsAllocation(rootDeviceIndex);
usmAllocPoolMutex = &allocPool->getMutex();
isAllocatedFromPool = true;
}
}
}
if (!gpuAllocation) {
auto ptr = svmAllocManager->createUnifiedMemoryAllocation(totalSize, unifiedMemoryProperties);
DEBUG_BREAK_IF(ptr == nullptr);
if (ptr == nullptr) {
return nullptr;
}
auto usmAlloc = svmAllocManager->getSVMAlloc(ptr);
UNRECOVERABLE_IF(usmAlloc == nullptr);
gpuAllocation = usmAlloc->gpuAllocations.getGraphicsAllocation(rootDeviceIndex);
allocationOffset = 0u;
allocatedSize = gpuAllocation->getUnderlyingBufferSize();
}
} else {
if (device.getProductHelper().is2MBLocalMemAlignmentEnabled()) {
globalSurfaceAllocation = constant ? device.getConstantSurfacePoolAllocator().requestGraphicsAllocation(totalSize)
: device.getGlobalSurfacePoolAllocator().requestGraphicsAllocation(totalSize);
}
if (globalSurfaceAllocation) {
gpuAllocation = globalSurfaceAllocation->getGraphicsAllocation();
allocationOffset = globalSurfaceAllocation->getOffset();
allocatedSize = globalSurfaceAllocation->getSize();
isAllocatedFromPool = true;
} else {
gpuAllocation = device.getMemoryManager()->allocateGraphicsMemoryWithProperties({rootDeviceIndex,
true, // allocateMemory
totalSize, allocationType,
false, // isMultiStorageAllocation
deviceBitfield});
if (nullptr == gpuAllocation) {
return nullptr;
}
allocationOffset = 0u;
allocatedSize = gpuAllocation->getUnderlyingBufferSize();
}
}
if (!globalSurfaceAllocation) {
globalSurfaceAllocation = new SharedPoolAllocation(
gpuAllocation,
allocationOffset,
allocatedSize,
usmAllocPoolMutex,
isAllocatedFromPool);
}
auto &rootDeviceEnvironment = device.getRootDeviceEnvironment();
auto &productHelper = device.getProductHelper();
bool isOnlyBssData = (totalSize == zeroInitSize);
if (false == isOnlyBssData) {
auto initSize = totalSize - zeroInitSize;
auto success = MemoryTransferHelper::transferMemoryToAllocation(productHelper.isBlitCopyRequiredForLocalMemory(rootDeviceEnvironment, *gpuAllocation),
device, gpuAllocation, allocationOffset, initData, initSize);
UNRECOVERABLE_IF(!success);
if (isAllocatedFromPool && zeroInitSize > 0) {
auto success = MemoryTransferHelper::memsetAllocation(productHelper.isBlitCopyRequiredForLocalMemory(rootDeviceEnvironment, *gpuAllocation),
device, gpuAllocation, allocationOffset + initSize, 0, zeroInitSize);
UNRECOVERABLE_IF(!success);
}
if (isAllocatedFromPool) {
device.getDefaultEngine().commandStreamReceiver->writePooledMemory(*globalSurfaceAllocation, true);
}
} else if (isAllocatedFromPool) {
auto success = MemoryTransferHelper::memsetAllocation(productHelper.isBlitCopyRequiredForLocalMemory(rootDeviceEnvironment, *gpuAllocation),
device, gpuAllocation, allocationOffset, 0, totalSize);
UNRECOVERABLE_IF(!success);
}
return globalSurfaceAllocation;
}
} // namespace NEO
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