mirror of
https://github.com/RGBCube/serenity
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f5de4f24b2
Instead of doing so in the constructor, let's do immediately after the constructor, so we can safely pass a reference of a Device, so the SysFSDeviceComponent constructor can use that object to identify whether it's a block device or a character device. This allows to us to not hold a device in SysFSDeviceComponent with a RefPtr. Also, we also call the before_removing method in both SlavePTY::unref and File::unref, so because Device has that method being overrided, it can ensure the device is removed always cleanly.
62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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//
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// A Disk Device Connected to a PATA Channel
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//
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#pragma once
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#include <Kernel/Interrupts/IRQHandler.h>
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#include <Kernel/Locking/Mutex.h>
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#include <Kernel/Storage/StorageDevice.h>
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namespace Kernel {
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class IDEController;
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class IDEChannel;
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class PATADiskDevice final : public StorageDevice {
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friend class IDEController;
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AK_MAKE_ETERNAL
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public:
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// Type of drive this IDEDiskDevice is on the ATA channel.
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//
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// Each PATA channel can contain only two devices, which (I think) are
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// jumper selectable on the drive itself by shorting two pins.
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enum class DriveType : u8 {
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Master,
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Slave
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};
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enum class InterfaceType : u8 {
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ATA,
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ATAPI,
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};
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public:
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static NonnullRefPtr<PATADiskDevice> create(const IDEController&, IDEChannel&, DriveType, InterfaceType, u16, u64);
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virtual ~PATADiskDevice() override;
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// ^BlockDevice
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virtual void start_request(AsyncBlockDeviceRequest&) override;
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virtual String storage_name() const override;
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// FIXME: We expose this constructor to make try_create_device helper to work
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PATADiskDevice(const IDEController&, IDEChannel&, DriveType, InterfaceType, u16, u64);
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private:
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// ^DiskDevice
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virtual StringView class_name() const override;
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bool is_slave() const;
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u16 m_capabilities { 0 };
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NonnullRefPtr<IDEChannel> m_channel;
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DriveType m_drive_type { DriveType::Master };
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InterfaceType m_interface_type { InterfaceType::ATA };
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};
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}
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