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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
//
// A Disk Device Connected to a PATA Channel
//
#pragma once
#include <Kernel/Interrupts/IRQHandler.h>
#include <Kernel/Mutex.h>
#include <Kernel/Storage/StorageDevice.h>
namespace Kernel {
class IDEController;
class IDEChannel;
class PATADiskDevice final : public StorageDevice {
friend class IDEController;
AK_MAKE_ETERNAL
public:
// Type of drive this IDEDiskDevice is on the ATA channel.
//
// Each PATA channel can contain only two devices, which (I think) are
// jumper selectable on the drive itself by shorting two pins.
enum class DriveType : u8 {
Master,
Slave
};
enum class InterfaceType : u8 {
ATA,
ATAPI,
};
public:
static NonnullRefPtr<PATADiskDevice> create(const IDEController&, IDEChannel&, DriveType, InterfaceType, u16, u64);
virtual ~PATADiskDevice() override;
// ^BlockDevice
virtual void start_request(AsyncBlockDeviceRequest&) override;
virtual String device_name() const override;
private:
PATADiskDevice(const IDEController&, IDEChannel&, DriveType, InterfaceType, u16, u64);
// ^DiskDevice
virtual StringView class_name() const override;
bool is_slave() const;
Mutex m_lock { "IDEDiskDevice" };
u16 m_capabilities { 0 };
NonnullRefPtr<IDEChannel> m_channel;
DriveType m_drive_type { DriveType::Master };
InterfaceType m_interface_type { InterfaceType::ATA };
};
}
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