120 lines
4.7 KiB
C++
120 lines
4.7 KiB
C++
/*
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* Copyright (C) 2017-2019 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#pragma once
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#include "runtime/built_ins/built_ins.h"
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#include "runtime/command_queue/command_queue_hw.h"
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#include "runtime/command_queue/enqueue_common.h"
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#include "runtime/command_stream/command_stream_receiver.h"
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#include "runtime/helpers/cache_policy.h"
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#include "runtime/helpers/hardware_commands_helper.h"
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#include "runtime/mem_obj/buffer.h"
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#include "runtime/memory_manager/surface.h"
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#include <new>
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namespace NEO {
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template <typename GfxFamily>
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cl_int CommandQueueHw<GfxFamily>::enqueueReadBuffer(
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Buffer *buffer,
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cl_bool blockingRead,
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size_t offset,
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size_t size,
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void *ptr,
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GraphicsAllocation *mapAllocation,
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cl_uint numEventsInWaitList,
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const cl_event *eventWaitList,
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cl_event *event) {
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if (nullptr == mapAllocation) {
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notifyEnqueueReadBuffer(buffer, !!blockingRead);
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}
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const cl_command_type cmdType = CL_COMMAND_READ_BUFFER;
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bool isMemTransferNeeded = buffer->isMemObjZeroCopy() ? buffer->checkIfMemoryTransferIsRequired(offset, 0, ptr, cmdType) : true;
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bool isCpuCopyAllowed = bufferCpuCopyAllowed(buffer, cmdType, blockingRead, size, ptr,
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numEventsInWaitList, eventWaitList);
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if (isCpuCopyAllowed) {
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if (isMemTransferNeeded) {
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return enqueueReadWriteBufferOnCpuWithMemoryTransfer(cmdType, buffer, offset, size, ptr,
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numEventsInWaitList, eventWaitList, event);
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} else {
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return enqueueReadWriteBufferOnCpuWithoutMemoryTransfer(cmdType, buffer, offset, size, ptr,
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numEventsInWaitList, eventWaitList, event);
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}
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} else if (!isMemTransferNeeded) {
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return enqueueMarkerForReadWriteOperation(buffer, ptr, cmdType, blockingRead,
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numEventsInWaitList, eventWaitList, event);
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}
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auto eBuiltInOps = EBuiltInOps::CopyBufferToBuffer;
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if (forceStateless(buffer->getSize())) {
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eBuiltInOps = EBuiltInOps::CopyBufferToBufferStateless;
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}
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auto &builder = getDevice().getExecutionEnvironment()->getBuiltIns()->getBuiltinDispatchInfoBuilder(eBuiltInOps,
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this->getContext(),
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this->getDevice());
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BuiltInOwnershipWrapper builtInLock(builder, this->context);
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void *dstPtr = ptr;
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MemObjSurface bufferSurf(buffer);
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HostPtrSurface hostPtrSurf(dstPtr, size);
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GeneralSurface mapSurface;
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Surface *surfaces[] = {&bufferSurf, nullptr};
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if (mapAllocation) {
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surfaces[1] = &mapSurface;
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mapSurface.setGraphicsAllocation(mapAllocation);
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//get offset between base cpu ptr of map allocation and dst ptr
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size_t dstOffset = ptrDiff(dstPtr, mapAllocation->getUnderlyingBuffer());
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dstPtr = reinterpret_cast<void *>(mapAllocation->getGpuAddress() + dstOffset);
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} else {
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surfaces[1] = &hostPtrSurf;
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if (size != 0) {
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auto &csr = blitEnqueueAllowed(cmdType) ? *getBcsCommandStreamReceiver() : getGpgpuCommandStreamReceiver();
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bool status = csr.createAllocationForHostSurface(hostPtrSurf, true);
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if (!status) {
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return CL_OUT_OF_RESOURCES;
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}
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dstPtr = reinterpret_cast<void *>(hostPtrSurf.getAllocation()->getGpuAddress());
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}
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}
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void *alignedDstPtr = alignDown(dstPtr, 4);
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size_t dstPtrOffset = ptrDiff(dstPtr, alignedDstPtr);
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BuiltinOpParams dc;
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dc.dstPtr = alignedDstPtr;
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dc.dstOffset = {dstPtrOffset, 0, 0};
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dc.srcMemObj = buffer;
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dc.srcOffset = {offset, 0, 0};
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dc.size = {size, 0, 0};
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dc.transferAllocation = mapAllocation ? mapAllocation : hostPtrSurf.getAllocation();
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MultiDispatchInfo dispatchInfo;
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builder.buildDispatchInfos(dispatchInfo, dc);
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if (context->isProvidingPerformanceHints()) {
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context->providePerformanceHintForMemoryTransfer(CL_COMMAND_READ_BUFFER, true, static_cast<cl_mem>(buffer), ptr);
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if (!isL3Capable(ptr, size)) {
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context->providePerformanceHint(CL_CONTEXT_DIAGNOSTICS_LEVEL_BAD_INTEL, CL_ENQUEUE_READ_BUFFER_DOESNT_MEET_ALIGNMENT_RESTRICTIONS, ptr, size, MemoryConstants::pageSize, MemoryConstants::pageSize);
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}
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}
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enqueueHandler<CL_COMMAND_READ_BUFFER>(
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surfaces,
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blockingRead == CL_TRUE,
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dispatchInfo,
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numEventsInWaitList,
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eventWaitList,
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event);
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return CL_SUCCESS;
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}
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} // namespace NEO
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