mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 09:42:45 +00:00
c802b1a363
When we enumerate the interrupt handlers, it's a good idea to show a meaningful name to the user instead of "IRQ Handler".
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
/*
|
|
* Copyright (c) 2021, the SerenityOS developers.
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <Kernel/Devices/CharacterDevice.h>
|
|
#include <Kernel/Random.h>
|
|
#include <Kernel/VirtIO/VirtIO.h>
|
|
|
|
namespace Kernel {
|
|
|
|
#define REQUESTQ 0
|
|
|
|
class VirtIORNG final : public CharacterDevice
|
|
, public VirtIODevice {
|
|
public:
|
|
virtual const char* purpose() const override { return class_name(); }
|
|
virtual const char* class_name() const override { return m_class_name.characters(); }
|
|
|
|
virtual bool can_read(const FileDescription&, size_t) const override { return false; }
|
|
virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override { return 0; }
|
|
virtual bool can_write(const FileDescription&, size_t) const override { return false; }
|
|
virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return 0; }
|
|
|
|
virtual mode_t required_mode() const override { return 0666; }
|
|
virtual String device_name() const override { return "hwrng"; }
|
|
|
|
VirtIORNG(PCI::Address);
|
|
virtual ~VirtIORNG() override;
|
|
|
|
private:
|
|
virtual bool handle_device_config_change() override;
|
|
virtual void handle_queue_update(u16 queue_index) override;
|
|
void request_entropy_from_host();
|
|
|
|
OwnPtr<Region> m_entropy_buffer;
|
|
EntropySource m_entropy_source;
|
|
};
|
|
|
|
}
|