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https://github.com/RGBCube/serenity
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500b7b08d6
The Storage subsystem, like the Audio and HID subsystems, exposes Unix device files (for example, in the /dev directory). To ensure consistency across the repository, we should make the Storage subsystem to reside in the Kernel/Devices directory like the two other mentioned subsystems.
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
/*
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* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
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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/Storage/ATA/ATAController.h>
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#include <Kernel/Devices/Storage/StorageDevice.h>
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#include <Kernel/Interrupts/IRQHandler.h>
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#include <Kernel/Locking/Mutex.h>
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namespace Kernel {
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class ATADevice : public StorageDevice {
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public:
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// Note: For IDE drives, port means Primary or Secondary (0 or 1),
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// and subport means Master or Slave (0 or 1).
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// For SATA drives (AHCI driven HBAs), a port can be a number from 0 to 31,
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// and subport can be a number from 0 to 14 (only 15 devices are allowed to
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// be connected to one SATA port multiplier).
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struct Address {
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// FIXME: u32 for this value is wasteful, because even AHCI only support 32 ports
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u32 port;
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u8 subport;
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};
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public:
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virtual ~ATADevice() override;
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// ^BlockDevice
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virtual void start_request(AsyncBlockDeviceRequest&) override;
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u16 ata_capabilites() const { return m_capabilities; }
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Address const& ata_address() const { return m_ata_address; }
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protected:
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ATADevice(ATAController const&, Address, u16, u16, u64);
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LockWeakPtr<ATAController> m_controller;
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const Address m_ata_address;
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const u16 m_capabilities;
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};
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}
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