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//===--- Level Zero Target RTL Implementation -----------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Level Zero Context abstraction.
//
//===----------------------------------------------------------------------===//
#include "L0Context.h"
#include "L0Plugin.h"
namespace llvm::omp::target::plugin {
Error L0ContextTy::init() {
CALL_ZE_RET_ERROR(zeDriverGetApiVersion, zeDriver, &APIVersion);
ODBG(OLDT_Init) << "Driver API version is "
<< llvm::format(PRIx32, APIVersion);
ze_context_desc_t Desc{ZE_STRUCTURE_TYPE_CONTEXT_DESC, nullptr, 0};
CALL_ZE_RET_ERROR(zeContextCreate, zeDriver, &Desc, &zeContext);
if (auto Err = EventPool.init(zeContext, 0))
return Err;
if (auto Err = HostMemAllocator.initHostPool(*this, Plugin.getOptions()))
return Err;
return Plugin::success();
}
Error L0ContextTy::deinit() {
if (auto Err = EventPool.deinit())
return Err;
if (auto Err = HostMemAllocator.deinit())
return Err;
if (zeContext)
CALL_ZE_RET_ERROR(zeContextDestroy, zeContext);
return Plugin::success();
}
StagingBufferTy &L0ContextTy::getStagingBuffer() {
auto &TLS = Plugin.getContextTLS(getZeContext());
auto &Buffer = TLS.getStagingBuffer();
const auto &Options = Plugin.getOptions();
if (!Buffer.initialized())
Buffer.init(getZeContext(), Options.StagingBufferSize,
Options.StagingBufferCount);
return Buffer;
}
} // namespace llvm::omp::target::plugin
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