mirror of
https://github.com/RGBCube/serenity
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40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/AtomicRefCounted.h>
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#include <Kernel/Bus/VirtIO/Device.h>
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#include <Kernel/Devices/CharacterDevice.h>
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#include <Kernel/Security/Random.h>
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namespace Kernel::VirtIO {
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#define REQUESTQ 0
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class RNG final
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: public AtomicRefCounted<RNG>
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, public VirtIO::Device {
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public:
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static NonnullLockRefPtr<RNG> must_create(PCI::DeviceIdentifier const&);
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virtual StringView purpose() const override { return class_name(); }
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virtual StringView device_name() const override { return class_name(); }
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virtual ~RNG() override = default;
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virtual ErrorOr<void> initialize_virtio_resources() override;
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private:
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virtual StringView class_name() const override { return "VirtIORNG"sv; }
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explicit RNG(PCI::DeviceIdentifier const&);
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virtual bool handle_device_config_change() override;
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virtual void handle_queue_update(u16 queue_index) override;
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void request_entropy_from_host();
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OwnPtr<Memory::Region> m_entropy_buffer;
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EntropySource m_entropy_source;
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};
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}
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