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/*
* Copyright (C) 2018-2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/command_stream/command_stream_receiver.h"
#include "shared/source/device/device.h"
#include "shared/source/helpers/flush_stamp.h"
#include "shared/source/helpers/get_info.h"
#include "shared/source/utilities/cpuintrinsics.h"
#include "shared/source/utilities/logger.h"
#include "opencl/source/command_queue/command_queue.h"
#include "opencl/source/context/context.h"
#include "opencl/source/event/event.h"
#include "opencl/source/event/event_builder.h"
#include "opencl/source/helpers/mipmap.h"
#include "opencl/source/mem_obj/buffer.h"
#include "opencl/source/mem_obj/image.h"
namespace NEO {
void cachelineFlushMemory(char *ptr, size_t size) {
const auto lastPtr = ptr + size;
while (ptr < lastPtr) {
CpuIntrinsics::clFlushOpt(ptr);
ptr += MemoryConstants::cacheLineSize;
}
CpuIntrinsics::sfence();
}
void *CommandQueue::cpuDataTransferHandler(TransferProperties &transferProperties, EventsRequest &eventsRequest, cl_int &retVal) {
MapInfo unmapInfo;
Event *outEventObj = nullptr;
void *returnPtr = nullptr;
EventBuilder eventBuilder;
bool eventCompleted = false;
bool mapOperation = transferProperties.cmdType == CL_COMMAND_MAP_BUFFER || transferProperties.cmdType == CL_COMMAND_MAP_IMAGE;
ErrorCodeHelper err(&retVal, CL_SUCCESS);
if (mapOperation) {
returnPtr = ptrOffset(transferProperties.memObj->getCpuAddressForMapping(),
transferProperties.memObj->calculateOffsetForMapping(transferProperties.offset) + transferProperties.mipPtrOffset);
if (!transferProperties.memObj->addMappedPtr(returnPtr, transferProperties.memObj->calculateMappedPtrLength(transferProperties.size),
transferProperties.mapFlags, transferProperties.size, transferProperties.offset, transferProperties.mipLevel, nullptr)) {
err.set(CL_INVALID_OPERATION);
return nullptr;
}
} else if (transferProperties.cmdType == CL_COMMAND_UNMAP_MEM_OBJECT) {
if (!transferProperties.memObj->findMappedPtr(transferProperties.ptr, unmapInfo)) {
err.set(CL_INVALID_VALUE);
return nullptr;
}
transferProperties.memObj->removeMappedPtr(unmapInfo.ptr);
}
auto blockQueue = false;
TaskCountType taskLevel = 0u;
TakeOwnershipWrapper<CommandQueue> queueOwnership(*this);
auto commandStreamReceiverOwnership = getGpgpuCommandStreamReceiver().obtainUniqueOwnership();
obtainTaskLevelAndBlockedStatus(taskLevel, eventsRequest.numEventsInWaitList, eventsRequest.eventWaitList, blockQueue, transferProperties.cmdType);
bool isMarkerRequiredForEventSignal = !blockQueue &&
!transferProperties.blocking &&
!transferProperties.finishRequired &&
!isOOQEnabled() &&
eventsRequest.outEvent != nullptr;
if (eventsRequest.outEvent && !isMarkerRequiredForEventSignal) {
eventBuilder.create<Event>(this, transferProperties.cmdType, CompletionStamp::notReady, CompletionStamp::notReady);
outEventObj = eventBuilder.getEvent();
outEventObj->setQueueTimeStamp();
outEventObj->setCPUProfilingPath(true);
*eventsRequest.outEvent = outEventObj;
}
DBG_LOG(LogTaskCounts, __FUNCTION__, "taskLevel", taskLevel);
if (outEventObj) {
outEventObj->taskLevel = taskLevel;
}
if (blockQueue &&
(transferProperties.cmdType == CL_COMMAND_MAP_BUFFER ||
transferProperties.cmdType == CL_COMMAND_MAP_IMAGE ||
transferProperties.cmdType == CL_COMMAND_UNMAP_MEM_OBJECT)) {
// Pass size and offset only. Unblocked command will call transferData(size, offset) method
enqueueBlockedMapUnmapOperation(eventsRequest.eventWaitList,
static_cast<size_t>(eventsRequest.numEventsInWaitList),
mapOperation ? MapOperationType::map : MapOperationType::unmap,
transferProperties.memObj,
mapOperation ? transferProperties.size : unmapInfo.size,
mapOperation ? transferProperties.offset : unmapInfo.offset,
mapOperation ? transferProperties.mapFlags == CL_MAP_READ : unmapInfo.readOnly,
eventBuilder);
}
if (!isMarkerRequiredForEventSignal) {
commandStreamReceiverOwnership.unlock();
queueOwnership.unlock();
}
// read/write buffers are always blocking
if (!blockQueue || transferProperties.blocking) {
err.set(Event::waitForEvents(eventsRequest.numEventsInWaitList, eventsRequest.eventWaitList));
bool modifySimulationFlags = false;
if (outEventObj) {
outEventObj->setSubmitTimeStamp();
}
// wait for the completeness of previous commands
if (transferProperties.finishRequired) {
auto ret = finish(true);
if (ret != CL_SUCCESS) {
err.set(ret);
return nullptr;
}
eventCompleted = true;
}
if (outEventObj) {
outEventObj->setStartTimeStamp();
}
UNRECOVERABLE_IF((transferProperties.memObj->isMemObjZeroCopy() == false) && isMipMapped(transferProperties.memObj));
switch (transferProperties.cmdType) {
case CL_COMMAND_MAP_BUFFER:
if (!transferProperties.memObj->isMemObjZeroCopy()) {
if (transferProperties.mapFlags != CL_MAP_WRITE_INVALIDATE_REGION) {
transferProperties.memObj->transferDataToHostPtr(transferProperties.size, transferProperties.offset);
}
eventCompleted = true;
} else if (debugManager.flags.AllowZeroCopyWithoutCoherency.get() == 1) {
cachelineFlushMemory(static_cast<char *>(transferProperties.getCpuPtrForReadWrite()), transferProperties.size[0]);
}
break;
case CL_COMMAND_MAP_IMAGE:
if (!transferProperties.memObj->isMemObjZeroCopy()) {
if (transferProperties.mapFlags != CL_MAP_WRITE_INVALIDATE_REGION) {
transferProperties.memObj->transferDataToHostPtr(transferProperties.size, transferProperties.offset);
}
eventCompleted = true;
}
break;
case CL_COMMAND_UNMAP_MEM_OBJECT:
if (!transferProperties.memObj->isMemObjZeroCopy()) {
if (!unmapInfo.readOnly) {
transferProperties.memObj->transferDataFromHostPtr(unmapInfo.size, unmapInfo.offset);
}
eventCompleted = true;
} else if (debugManager.flags.AllowZeroCopyWithoutCoherency.get() == 1) {
cachelineFlushMemory(static_cast<char *>(transferProperties.getCpuPtrForReadWrite()), transferProperties.memObj->getSize());
}
if (!unmapInfo.readOnly) {
modifySimulationFlags = true;
}
break;
case CL_COMMAND_READ_BUFFER:
memcpy_s(transferProperties.ptr, transferProperties.size[0], transferProperties.getCpuPtrForReadWrite(), transferProperties.size[0]);
eventCompleted = true;
break;
case CL_COMMAND_WRITE_BUFFER:
memcpy_s(transferProperties.getCpuPtrForReadWrite(), transferProperties.size[0], transferProperties.ptr, transferProperties.size[0]);
eventCompleted = true;
modifySimulationFlags = true;
break;
case CL_COMMAND_MARKER:
break;
default:
err.set(CL_INVALID_OPERATION);
}
if (outEventObj) {
outEventObj->setEndTimeStamp();
outEventObj->updateTaskCount(this->taskCount, outEventObj->peekBcsTaskCountFromCommandQueue());
outEventObj->flushStamp->replaceStampObject(this->flushStamp->getStampReference());
if (eventCompleted) {
outEventObj->setStatus(CL_COMPLETE);
} else {
outEventObj->updateExecutionStatus();
}
} else if (isMarkerRequiredForEventSignal) {
enqueueMarkerWithWaitList(0, nullptr, eventsRequest.outEvent);
commandStreamReceiverOwnership.unlock();
queueOwnership.unlock();
outEventObj = castToObject<Event>(*eventsRequest.outEvent);
outEventObj->setCmdType(transferProperties.cmdType);
}
if (modifySimulationFlags) {
auto graphicsAllocation = transferProperties.memObj->getGraphicsAllocation(getDevice().getRootDeviceIndex());
graphicsAllocation->setAubWritable(true, GraphicsAllocation::defaultBank);
graphicsAllocation->setTbxWritable(true, GraphicsAllocation::defaultBank);
}
}
if (context->isProvidingPerformanceHints()) {
providePerformanceHint(transferProperties);
}
return returnPtr; // only map returns pointer
}
void CommandQueue::providePerformanceHint(TransferProperties &transferProperties) {
switch (transferProperties.cmdType) {
case CL_COMMAND_MAP_BUFFER:
case CL_COMMAND_MAP_IMAGE:
context->providePerformanceHintForMemoryTransfer(transferProperties.cmdType, !transferProperties.memObj->isMemObjZeroCopy(),
static_cast<cl_mem>(transferProperties.memObj));
break;
case CL_COMMAND_UNMAP_MEM_OBJECT:
if (!transferProperties.memObj->isMemObjZeroCopy()) {
context->providePerformanceHintForMemoryTransfer(transferProperties.cmdType, true,
transferProperties.ptr, static_cast<cl_mem>(transferProperties.memObj));
break;
}
context->providePerformanceHintForMemoryTransfer(transferProperties.cmdType, false, transferProperties.ptr);
break;
case CL_COMMAND_READ_BUFFER:
case CL_COMMAND_WRITE_BUFFER:
context->providePerformanceHintForMemoryTransfer(transferProperties.cmdType, true,
static_cast<cl_mem>(transferProperties.memObj), transferProperties.ptr);
break;
}
}
} // namespace NEO
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