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SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
44 lines
1.3 KiB
C++
44 lines
1.3 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 <Kernel/Devices/CharacterDevice.h>
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#include <Kernel/Random.h>
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#include <Kernel/VirtIO/VirtIO.h>
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namespace Kernel {
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#define VIRTIO_ENTROPY_PCI_DEVICE_ID 0x1005
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#define REQUESTQ 0
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class VirtIORNG final : public CharacterDevice
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, public VirtIODevice {
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public:
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virtual const char* class_name() const override { return m_class_name.characters(); }
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virtual bool can_read(const FileDescription&, size_t) const override { return false; }
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virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override { return 0; }
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virtual bool can_write(const FileDescription&, size_t) const override { return false; }
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virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return 0; }
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virtual mode_t required_mode() const override { return 0666; }
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virtual String device_name() const override { return "hwrng"; }
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VirtIORNG(PCI::Address);
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virtual ~VirtIORNG() override;
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private:
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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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OwnPtr<Region> m_entropy_buffer;
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EntropySource m_entropy_source;
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};
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}
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