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https://github.com/RGBCube/serenity
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c001e3f567
We do that to increase clarity of the major and secondary components in the subsystem. To ensure it's even more understandable, we rename the files to better represent the class within them and to remove redundancy in the name. Also, some includes are removed from the general components of the ATA components' classes.
65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
/*
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* Copyright (c) 2021-2022, 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 <AK/OwnPtr.h>
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#include <AK/RefPtr.h>
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#include <AK/Types.h>
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#include <Kernel/Sections.h>
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#include <Kernel/Storage/ATA/AHCI/Definitions.h>
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#include <Kernel/Storage/ATA/ATAController.h>
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#include <Kernel/Storage/StorageDevice.h>
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namespace Kernel {
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class AsyncBlockDeviceRequest;
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class AHCIInterruptHandler;
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class AHCIPort;
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class AHCIController final : public ATAController
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, public PCI::Device {
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friend class AHCIInterruptHandler;
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public:
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static NonnullRefPtr<AHCIController> initialize(PCI::DeviceIdentifier const& pci_device_identifier);
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virtual ~AHCIController() override;
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virtual RefPtr<StorageDevice> device(u32 index) const override;
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virtual bool reset() override;
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virtual bool shutdown() override;
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virtual size_t devices_count() const override;
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virtual void start_request(ATADevice const&, AsyncBlockDeviceRequest&) override;
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virtual void complete_current_request(AsyncDeviceRequest::RequestResult) override;
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void handle_interrupt_for_port(Badge<AHCIInterruptHandler>, u32 port_index) const;
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private:
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void disable_global_interrupts() const;
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void enable_global_interrupts() const;
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explicit AHCIController(PCI::DeviceIdentifier const&);
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void initialize_hba(PCI::DeviceIdentifier const&);
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AHCI::HBADefinedCapabilities capabilities() const;
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RefPtr<StorageDevice> device_by_port(u32 index) const;
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volatile AHCI::PortRegisters& port(size_t port_number) const;
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NonnullOwnPtr<Memory::Region> default_hba_region() const;
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volatile AHCI::HBA& hba() const;
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Array<RefPtr<AHCIPort>, 32> m_ports;
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NonnullOwnPtr<Memory::Region> m_hba_region;
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AHCI::HBADefinedCapabilities m_hba_capabilities;
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// FIXME: There could be multiple IRQ (MSI) handlers for AHCI. Find a way to use all of them.
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OwnPtr<AHCIInterruptHandler> m_irq_handler;
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// Note: This lock is intended to be locked when doing changes to HBA registers
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// that affect its core functionality in a manner that controls all attached storage devices
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// to the HBA SATA ports.
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mutable Spinlock m_hba_control_lock;
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};
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}
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