mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-04-27 06:48:49 +00:00
9eb08bdb0f
This helps avoid confusion in general, and make constructors, methods and code patterns much more clean and understandable.
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
/*
|
|
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/IntrusiveList.h>
|
|
#include <Kernel/Devices/BlockDevice.h>
|
|
#include <Kernel/Interrupts/IRQHandler.h>
|
|
#include <Kernel/Locking/Mutex.h>
|
|
#include <Kernel/Storage/Partition/DiskPartition.h>
|
|
#include <Kernel/Storage/StorageController.h>
|
|
|
|
namespace Kernel {
|
|
|
|
class StorageDevice : public BlockDevice {
|
|
friend class StorageManagement;
|
|
|
|
public:
|
|
// Note: this attribute describes the internal command set of a Storage device.
|
|
// For example, an ordinary harddrive utilizes the ATA command set, while
|
|
// an ATAPI device (e.g. Optical drive) that is connected to the ATA bus,
|
|
// is actually using SCSI commands (packets) encapsulated inside an ATA command.
|
|
// The IDE controller code being aware of the possibility of ATAPI devices attached
|
|
// to the ATA bus, will check whether the Command set is ATA or SCSI and will act
|
|
// accordingly.
|
|
enum class CommandSet {
|
|
PlainMemory,
|
|
SCSI,
|
|
ATA,
|
|
NVMe,
|
|
};
|
|
|
|
public:
|
|
virtual u64 max_addressable_block() const { return m_max_addressable_block; }
|
|
|
|
// ^BlockDevice
|
|
virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
|
|
virtual bool can_read(const OpenFileDescription&, size_t) const override;
|
|
virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
|
|
virtual bool can_write(const OpenFileDescription&, size_t) const override;
|
|
virtual void prepare_for_unplug() { m_partitions.clear(); }
|
|
|
|
// FIXME: Remove this method after figuring out another scheme for naming.
|
|
StringView early_storage_name() const;
|
|
|
|
NonnullRefPtrVector<DiskPartition> const& partitions() const { return m_partitions; }
|
|
|
|
virtual CommandSet command_set() const = 0;
|
|
|
|
// ^File
|
|
virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) final;
|
|
|
|
protected:
|
|
StorageDevice(MajorNumber, MinorNumber, size_t, u64, NonnullOwnPtr<KString>);
|
|
// ^DiskDevice
|
|
virtual StringView class_name() const override;
|
|
|
|
private:
|
|
mutable IntrusiveListNode<StorageDevice, RefPtr<StorageDevice>> m_list_node;
|
|
NonnullRefPtrVector<DiskPartition> m_partitions;
|
|
|
|
// FIXME: Remove this method after figuring out another scheme for naming.
|
|
NonnullOwnPtr<KString> m_early_storage_device_name;
|
|
u64 m_max_addressable_block;
|
|
};
|
|
|
|
}
|