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Kernel: Move the Storage directory to be a new directory under Devices
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.
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59 changed files with 133 additions and 133 deletions
156
Kernel/Devices/Storage/ATA/GenericIDE/Channel.h
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156
Kernel/Devices/Storage/ATA/GenericIDE/Channel.h
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/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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//
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// Parallel ATA (PATA) controller driver
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//
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// This driver describes a logical PATA Channel. Each channel can connect up to 2
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// IDE Hard Disk Drives. The drives themselves can be either the master drive (hd0)
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// or the slave drive (hd1).
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//
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// More information about the ATA spec for PATA can be found here:
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// ftp://ftp.seagate.com/acrobat/reference/111-1c.pdf
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//
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#pragma once
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#include <AK/Error.h>
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#include <Kernel/Devices/Device.h>
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#include <Kernel/Devices/Storage/ATA/ATADevice.h>
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#include <Kernel/Devices/Storage/ATA/ATAPort.h>
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#include <Kernel/Devices/Storage/StorageDevice.h>
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#include <Kernel/IOWindow.h>
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#include <Kernel/Interrupts/IRQHandler.h>
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#include <Kernel/Library/LockRefPtr.h>
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#include <Kernel/Locking/Mutex.h>
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#include <Kernel/Memory/PhysicalPage.h>
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#include <Kernel/PhysicalAddress.h>
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#include <Kernel/Random.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 IDEController;
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#if ARCH(X86_64)
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class PCIIDELegacyModeController;
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class ISAIDEController;
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#endif
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class IDEChannel
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: public ATAPort
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, public IRQHandler {
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friend class IDEController;
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public:
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enum class ChannelType : u8 {
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Primary,
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Secondary
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};
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enum class DeviceType : u8 {
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Master,
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Slave,
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};
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struct IOWindowGroup {
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IOWindowGroup(NonnullOwnPtr<IOWindow> io_window, NonnullOwnPtr<IOWindow> control_window, NonnullOwnPtr<IOWindow> m_bus_master_window)
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: m_io_window(move(io_window))
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, m_control_window(move(control_window))
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, m_bus_master_window(move(m_bus_master_window))
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{
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}
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IOWindowGroup(NonnullOwnPtr<IOWindow> io_window, NonnullOwnPtr<IOWindow> control_window)
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: m_io_window(move(io_window))
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, m_control_window(move(control_window))
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{
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}
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// Disable default implementations that would use surprising integer promotion.
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bool operator==(IOWindowGroup const&) const = delete;
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bool operator<=(IOWindowGroup const&) const = delete;
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bool operator>=(IOWindowGroup const&) const = delete;
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bool operator<(IOWindowGroup const&) const = delete;
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bool operator>(IOWindowGroup const&) const = delete;
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IOWindow& io_window() const { return *m_io_window; };
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IOWindow& control_window() const { return *m_control_window; }
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IOWindow* bus_master_window() const { return m_bus_master_window.ptr(); }
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private:
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mutable NonnullOwnPtr<IOWindow> m_io_window;
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mutable NonnullOwnPtr<IOWindow> m_control_window;
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mutable OwnPtr<IOWindow> m_bus_master_window;
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};
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public:
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static ErrorOr<NonnullRefPtr<IDEChannel>> create(IDEController const&, IOWindowGroup, ChannelType type);
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static ErrorOr<NonnullRefPtr<IDEChannel>> create(IDEController const&, u8 irq, IOWindowGroup, ChannelType type);
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virtual ~IDEChannel() override;
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virtual StringView purpose() const override { return "PATA Channel"sv; }
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#if ARCH(X86_64)
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ErrorOr<void> allocate_resources_for_pci_ide_controller(Badge<PCIIDELegacyModeController>, bool force_pio);
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ErrorOr<void> allocate_resources_for_isa_ide_controller(Badge<ISAIDEController>);
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#endif
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private:
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static constexpr size_t m_logical_sector_size = 512;
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ErrorOr<void> allocate_resources(bool force_pio);
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StringView channel_type_string() const;
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virtual ErrorOr<void> disable() override { TODO(); }
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virtual ErrorOr<void> power_on() override { TODO(); }
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virtual ErrorOr<void> port_phy_reset() override;
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bool select_device_and_wait_until_not_busy(DeviceType, size_t milliseconds_timeout);
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virtual bool pio_capable() const override { return true; }
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virtual bool dma_capable() const override { return m_dma_enabled; }
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virtual size_t max_possible_devices_connected() const override { return 2; }
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virtual ErrorOr<void> stop_busmastering() override;
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virtual ErrorOr<void> start_busmastering(TransactionDirection) override;
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virtual ErrorOr<void> force_busmastering_status_clean() override;
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virtual ErrorOr<u8> busmastering_status() override;
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virtual ErrorOr<void> prepare_transaction_with_busmastering(TransactionDirection, PhysicalAddress prdt_buffer) override;
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virtual ErrorOr<void> initiate_transaction(TransactionDirection) override;
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virtual ErrorOr<u8> task_file_status() override;
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virtual ErrorOr<u8> task_file_error() override;
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virtual ErrorOr<void> wait_if_busy_until_timeout(size_t timeout_in_milliseconds) override;
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virtual ErrorOr<void> device_select(size_t device_index) override;
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virtual ErrorOr<bool> detect_presence_on_selected_device() override;
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virtual ErrorOr<void> enable_interrupts() override;
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virtual ErrorOr<void> disable_interrupts() override;
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virtual ErrorOr<void> force_clear_interrupts() override;
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virtual ErrorOr<void> load_taskfile_into_registers(TaskFile const&, LBAMode lba_mode, size_t completion_timeout_in_milliseconds) override;
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virtual ErrorOr<void> read_pio_data_to_buffer(UserOrKernelBuffer&, size_t block_offset, size_t words_count) override;
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virtual ErrorOr<void> write_pio_data_from_buffer(UserOrKernelBuffer const&, size_t block_offset, size_t words_count) override;
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IDEChannel(IDEController const&, IOWindowGroup, ChannelType type, NonnullOwnPtr<KBuffer> ata_identify_data_buffer);
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IDEChannel(IDEController const&, u8 irq, IOWindowGroup, ChannelType type, NonnullOwnPtr<KBuffer> ata_identify_data_buffer);
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//^ IRQHandler
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virtual bool handle_irq(RegisterState const&) override;
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// Data members
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ChannelType m_channel_type { ChannelType::Primary };
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bool m_dma_enabled { false };
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bool m_interrupts_enabled { true };
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IOWindowGroup m_io_window_group;
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};
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}
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