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/*
* Copyright (c) 2021, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefCounted.h>
#include <Kernel/Bus/VirtIO/Device.h>
#include <Kernel/Devices/CharacterDevice.h>
#include <Kernel/Random.h>
namespace Kernel::VirtIO {
#define REQUESTQ 0
class RNG final
: public RefCounted<RNG>
, public VirtIO::Device {
public:
static NonnullRefPtr<RNG> must_create(PCI::Address address);
virtual StringView purpose() const override { return class_name(); }
virtual ~RNG() override = default;
virtual void initialize() override;
private:
virtual StringView class_name() const override { return "VirtIOConsole"; }
explicit RNG(PCI::Address);
virtual bool handle_device_config_change() override;
virtual void handle_queue_update(u16 queue_index) override;
void request_entropy_from_host();
OwnPtr<Memory::Region> m_entropy_buffer;
EntropySource m_entropy_source;
};
}
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