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75 lines
2.3 KiB
C++
75 lines
2.3 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 <AK/OwnPtr.h>
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#include <AK/RefPtr.h>
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#include <Kernel/Devices/Device.h>
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#include <Kernel/IO.h>
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#include <Kernel/Interrupts/IRQHandler.h>
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#include <Kernel/Mutex.h>
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#include <Kernel/PhysicalAddress.h>
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#include <Kernel/Random.h>
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#include <Kernel/Sections.h>
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#include <Kernel/Storage/AHCIController.h>
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#include <Kernel/Storage/AHCIPort.h>
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#include <Kernel/Storage/StorageDevice.h>
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#include <Kernel/VM/PhysicalPage.h>
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#include <Kernel/WaitQueue.h>
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namespace Kernel {
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class AsyncBlockDeviceRequest;
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class AHCIController;
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class AHCIPort;
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class AHCIPortHandler final : public RefCounted<AHCIPortHandler>
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, public IRQHandler {
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friend class AHCIController;
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friend class SATADiskDevice;
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public:
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UNMAP_AFTER_INIT static NonnullRefPtr<AHCIPortHandler> create(AHCIController&, u8 irq, AHCI::MaskedBitField taken_ports);
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virtual ~AHCIPortHandler() override;
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RefPtr<StorageDevice> device_at_port(size_t port_index) const;
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virtual StringView purpose() const override { return "SATA Port Handler"; }
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AHCI::HBADefinedCapabilities hba_capabilities() const;
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NonnullRefPtr<AHCIController> hba_controller() const { return m_parent_controller; }
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PhysicalAddress get_identify_metadata_physical_region(u32 port_index) const;
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bool is_responsible_for_port_index(u32 port_index) const { return m_taken_ports.is_set_at(port_index); }
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private:
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UNMAP_AFTER_INIT AHCIPortHandler(AHCIController&, u8 irq, AHCI::MaskedBitField taken_ports);
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//^ IRQHandler
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virtual bool handle_irq(const RegisterState&) override;
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enum class Direction : u8 {
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Read,
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Write,
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};
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AHCI::MaskedBitField create_pending_ports_interrupts_bitfield() const;
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void start_request(AsyncBlockDeviceRequest&, bool, bool, u16);
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void complete_current_request(AsyncDeviceRequest::RequestResult);
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void enumerate_ports(Function<void(const AHCIPort&)> callback) const;
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RefPtr<AHCIPort> port_at_index(u32 port_index) const;
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// Data members
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HashMap<u32, NonnullRefPtr<AHCIPort>> m_handled_ports;
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NonnullRefPtr<AHCIController> m_parent_controller;
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NonnullRefPtrVector<PhysicalPage> m_identify_metadata_pages;
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AHCI::MaskedBitField m_taken_ports;
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AHCI::MaskedBitField m_pending_ports_interrupts;
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};
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}
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