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/*
* Copyright (C) 2020-2026 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/os_interface/linux/drm_memory_operations_handler_default.h"
#include "shared/source/command_stream/command_stream_receiver.h"
#include "shared/source/debug_settings/debug_settings_manager.h"
#include "shared/source/device/device.h"
#include "shared/source/execution_environment/execution_environment.h"
#include "shared/source/execution_environment/root_device_environment.h"
#include "shared/source/os_interface/linux/drm_allocation.h"
#include "shared/source/os_interface/linux/drm_buffer_object.h"
#include "shared/source/os_interface/linux/drm_memory_manager.h"
#include "shared/source/os_interface/os_context.h"
#include <algorithm>
#include <iostream>
namespace NEO {
;
DrmMemoryOperationsHandlerDefault::~DrmMemoryOperationsHandlerDefault() = default;
MemoryOperationsStatus DrmMemoryOperationsHandlerDefault::makeResidentWithinOsContext(OsContext *osContext, ArrayRef<GraphicsAllocation *> gfxAllocations, bool evictable, const bool forcePagingFence, const bool acquireLock) {
std::unique_lock<std::mutex> lock;
if (acquireLock) {
lock = std::unique_lock<std::mutex>(this->mutex);
}
this->residency.insert(this->residency.end(), gfxAllocations.begin(), gfxAllocations.end());
this->newResourcesSinceLastRingSubmit = true;
return MemoryOperationsStatus::success;
}
MemoryOperationsStatus DrmMemoryOperationsHandlerDefault::makeResident(Device *device, ArrayRef<GraphicsAllocation *> gfxAllocations, bool isDummyExecNeeded, const bool forcePagingFence) {
OsContext *osContext = nullptr;
auto ret = this->makeResidentWithinOsContext(osContext, gfxAllocations, false, forcePagingFence, true);
if (!isDummyExecNeeded || ret != MemoryOperationsStatus::success) {
return ret;
}
ret = flushDummyExec(device, gfxAllocations);
if (ret != MemoryOperationsStatus::success) {
for (auto &alloc : gfxAllocations) {
evictWithinOsContext(osContext, *alloc);
}
}
return ret;
}
MemoryOperationsStatus DrmMemoryOperationsHandlerDefault::lock(Device *device, ArrayRef<GraphicsAllocation *> gfxAllocations) {
OsContext *osContext = nullptr;
for (auto gfxAllocation = gfxAllocations.begin(); gfxAllocation != gfxAllocations.end(); gfxAllocation++) {
auto drmAllocation = static_cast<DrmAllocation *>(*gfxAllocation);
drmAllocation->setLockedMemory(true);
for (auto bo : drmAllocation->getBOs()) {
bo->requireExplicitLockedMemory(true);
}
}
return this->makeResidentWithinOsContext(osContext, gfxAllocations, false, false, true);
}
MemoryOperationsStatus DrmMemoryOperationsHandlerDefault::evictWithinOsContext(OsContext *osContext, GraphicsAllocation &gfxAllocation) {
std::lock_guard<std::mutex> lock(mutex);
auto ret = std::find(this->residency.begin(), this->residency.end(), &gfxAllocation);
if (ret != this->residency.end()) {
this->residency.erase(ret);
this->newResourcesSinceLastRingSubmit = true;
}
return MemoryOperationsStatus::success;
}
MemoryOperationsStatus DrmMemoryOperationsHandlerDefault::evict(Device *device, GraphicsAllocation &gfxAllocation) {
OsContext *osContext = nullptr;
auto drmAllocation = static_cast<DrmAllocation *>(&gfxAllocation);
drmAllocation->setLockedMemory(false);
if (drmAllocation->storageInfo.isChunked || drmAllocation->storageInfo.getNumBanks() == 1) {
auto bo = drmAllocation->getBO();
bo->requireExplicitLockedMemory(false);
} else {
for (auto bo : drmAllocation->getBOs()) {
bo->requireExplicitLockedMemory(false);
}
}
return this->evictWithinOsContext(osContext, gfxAllocation);
}
MemoryOperationsStatus DrmMemoryOperationsHandlerDefault::isResident(Device *device, GraphicsAllocation &gfxAllocation) {
std::lock_guard<std::mutex> lock(mutex);
auto ret = std::find(this->residency.begin(), this->residency.end(), &gfxAllocation);
if (ret == this->residency.end()) {
return MemoryOperationsStatus::memoryNotFound;
}
return MemoryOperationsStatus::success;
}
MemoryOperationsStatus DrmMemoryOperationsHandlerDefault::mergeWithResidencyContainer(OsContext *osContext, ResidencyContainer &residencyContainer) {
if (osContext->isDirectSubmissionLightActive()) {
if (this->newResourcesSinceLastRingSubmit) {
residencyContainer.insert(residencyContainer.end(), this->residency.begin(), this->residency.end());
}
} else {
for (auto gfxAllocation = this->residency.begin(); gfxAllocation != this->residency.end(); gfxAllocation++) {
auto ret = std::find(residencyContainer.begin(), residencyContainer.end(), *gfxAllocation);
if (ret == residencyContainer.end()) {
residencyContainer.push_back(*gfxAllocation);
}
}
}
return MemoryOperationsStatus::success;
}
std::unique_lock<std::mutex> DrmMemoryOperationsHandlerDefault::lockHandlerIfUsed() {
std::unique_lock<std::mutex> lock(this->mutex);
if (this->residency.size()) {
return lock;
}
return std::unique_lock<std::mutex>();
}
MemoryOperationsStatus DrmMemoryOperationsHandlerDefault::evictUnusedAllocations(bool waitForCompletion, bool isLockNeeded) {
return this->evictUnusedAllocationsImpl(this->residency, waitForCompletion);
}
bool DrmMemoryOperationsHandlerDefault::obtainAndResetNewResourcesSinceLastRingSubmit() {
auto ret = this->newResourcesSinceLastRingSubmit;
this->newResourcesSinceLastRingSubmit = false;
return ret;
}
int DrmMemoryOperationsHandlerDefault::evictImpl(OsContext *osContext, GraphicsAllocation &gfxAllocation, DeviceBitfield deviceBitfield) {
std::erase(this->residency, &gfxAllocation);
this->newResourcesSinceLastRingSubmit = true;
return 0;
}
MemoryOperationsStatus DrmMemoryOperationsHandlerDefault::flushDummyExec(Device *device, ArrayRef<GraphicsAllocation *> gfxAllocations) {
std::lock_guard<std::mutex> lock(mutex);
auto memoryManager = reinterpret_cast<DrmMemoryManager *>(device->getMemoryManager());
std::vector<BufferObject *> boArray;
uint32_t boCount = 0;
for (auto &alloc : this->residency) {
for (auto &bo : reinterpret_cast<DrmAllocation *>(alloc)->getBOs()) {
if (bo != 0) {
boArray.push_back(bo);
boCount++;
}
}
}
auto submissionStatus = memoryManager->emitPinningRequestForBoContainer(boArray.data(), boCount, rootDeviceIndex);
if (submissionStatus != SubmissionStatus::success) {
return MemoryOperationsStatus::outOfMemory;
}
return MemoryOperationsStatus::success;
}
} // namespace NEO
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