drivers/gpu/msd-intel-gen/src/cache_config.h

// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CACHE_CONFIG_H
#define CACHE_CONFIG_H

#include "types.h"
#include <memory>
#include <stdint.h>

class InstructionWriter;

class CacheConfig {
public:
    // Returns the number of bytes required to write into the instruction stream.
    static uint64_t InstructionBytesRequired();

    // Assumes there is sufficient space available to write into the instruction stream.
    static bool InitCacheConfig(InstructionWriter* writer, EngineCommandStreamerId engine_id);

private:
    static void GetLncfMemoryObjectControlState(std::vector<uint16_t>& mocs);
    static void GetMemoryObjectControlState(std::vector<uint32_t>& mocs);

    static constexpr uint32_t kMemoryObjectControlStateEntries = 62;
    static constexpr uint32_t kLncfMemoryObjectControlStateEntries =
        kMemoryObjectControlStateEntries / 2;

    static_assert(kMemoryObjectControlStateEntries % 2 == 0,
                  "kMemoryObjectControlStateEntries not even");

    friend class TestCacheConfig;
};

#endif // CACHE_CONFIG