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/*
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefPtr.h>
#include <Kernel/Arch/x86/IO.h>
#include <Kernel/Devices/Device.h>
#include <Kernel/Interrupts/IRQHandler.h>
#include <Kernel/Locking/Mutex.h>
#include <Kernel/Memory/PhysicalPage.h>
#include <Kernel/PhysicalAddress.h>
#include <Kernel/Random.h>
#include <Kernel/Sections.h>
#include <Kernel/Storage/AHCIController.h>
#include <Kernel/Storage/AHCIPort.h>
#include <Kernel/Storage/StorageDevice.h>
#include <Kernel/WaitQueue.h>
namespace Kernel {
class AsyncBlockDeviceRequest;
class AHCIController;
class AHCIPort;
class AHCIPortHandler final : public RefCounted<AHCIPortHandler>
, public IRQHandler {
friend class AHCIController;
public:
UNMAP_AFTER_INIT static NonnullRefPtr<AHCIPortHandler> create(AHCIController&, u8 irq, AHCI::MaskedBitField taken_ports);
virtual ~AHCIPortHandler() override;
RefPtr<StorageDevice> device_at_port(size_t port_index) const;
virtual StringView purpose() const override { return "SATA Port Handler"sv; }
AHCI::HBADefinedCapabilities hba_capabilities() const;
NonnullRefPtr<AHCIController> hba_controller() const { return m_parent_controller; }
PhysicalAddress get_identify_metadata_physical_region(u32 port_index) const;
bool is_responsible_for_port_index(u32 port_index) const { return m_taken_ports.is_set_at(port_index); }
private:
UNMAP_AFTER_INIT AHCIPortHandler(AHCIController&, u8 irq, AHCI::MaskedBitField taken_ports);
//^ IRQHandler
virtual bool handle_irq(const RegisterState&) override;
enum class Direction : u8 {
Read,
Write,
};
AHCI::MaskedBitField create_pending_ports_interrupts_bitfield() const;
void start_request(AsyncBlockDeviceRequest&, bool, bool, u16);
void complete_current_request(AsyncDeviceRequest::RequestResult);
void enumerate_ports(Function<void(const AHCIPort&)> callback) const;
RefPtr<AHCIPort> port_at_index(u32 port_index) const;
// Data members
HashMap<u32, NonnullRefPtr<AHCIPort>> m_handled_ports;
NonnullRefPtr<AHCIController> m_parent_controller;
NonnullRefPtrVector<Memory::PhysicalPage> m_identify_metadata_pages;
AHCI::MaskedBitField m_taken_ports;
AHCI::MaskedBitField m_pending_ports_interrupts;
};
}
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