Initial support for oneAPI Level Zero

Change-Id: I221df8427b1844237a4d9d900c58512706b0be0f

level_zero/core/source/printf_handler.cpp

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2019-2020 Intel Corporation
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ */
+
+#include "level_zero/core/source/printf_handler.h"
+
+#include "shared/source/execution_environment/execution_environment.h"
+#include "shared/source/memory_manager/memory_manager.h"
+#include "shared/source/program/print_formatter.h"
+
+#include "level_zero/core/source/device_imp.h"
+
+namespace L0 {
+
+NEO::GraphicsAllocation *PrintfHandler::createPrintfBuffer(Device *device) {
+    NEO::AllocationProperties properties(
+        device->getRootDeviceIndex(), PrintfHandler::printfBufferSize, NEO::GraphicsAllocation::AllocationType::BUFFER_HOST_MEMORY);
+    properties.alignment = MemoryConstants::pageSize64k;
+    auto allocation = device->getDriverHandle()->getMemoryManager()->allocateGraphicsMemoryWithProperties(properties);
+
+    *reinterpret_cast<uint32_t *>(allocation->getUnderlyingBuffer()) =
+        PrintfHandler::printfSurfaceInitialDataSize;
+    return allocation;
+}
+
+void PrintfHandler::printOutput(const KernelImmutableData *function,
+                                NEO::GraphicsAllocation *printfBuffer, Device *device) {
+    bool using32BitGpuPointers = function->getDescriptor().kernelAttributes.gpuPointerSize == 4u;
+    NEO::PrintFormatter printfFormatter{static_cast<uint8_t *>(printfBuffer->getUnderlyingBuffer()),
+                                        static_cast<uint32_t>(printfBuffer->getUnderlyingBufferSize()),
+                                        using32BitGpuPointers,
+                                        function->getDescriptor().kernelMetadata.printfStringsMap};
+    printfFormatter.printKernelOutput();
+
+    *reinterpret_cast<uint32_t *>(printfBuffer->getUnderlyingBuffer()) =
+        PrintfHandler::printfSurfaceInitialDataSize;
+}
+
+size_t PrintfHandler::getPrintBufferSize() {
+    return PrintfHandler::printfBufferSize;
+}
+
+} // namespace L0