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https://github.com/fergalmoran/ladybird.git
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b204da94b0
Storage controllers are initialized during init and are never modified. NonnullRefPtr can be safely used instead of the NonnullLockRefPtr. This also fixes one of the UB issue that was there when using an NVMe device because of NonnullLockRefPtr. We can add proper locking when we need to modify the storage controllers after init.
57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
/*
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* Copyright (c) 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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#include <AK/OwnPtr.h>
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#include <AK/Types.h>
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#include <Kernel/Arch/x86_64/ISABus/IDEController.h>
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#include <Kernel/Bus/PCI/API.h>
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#include <Kernel/Library/LockRefPtr.h>
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#include <Kernel/Sections.h>
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#include <Kernel/Storage/ATA/ATADiskDevice.h>
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#include <Kernel/Storage/ATA/GenericIDE/Channel.h>
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namespace Kernel {
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UNMAP_AFTER_INIT ErrorOr<NonnullRefPtr<ISAIDEController>> ISAIDEController::initialize()
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{
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auto controller = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) ISAIDEController()));
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TRY(controller->initialize_channels());
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return controller;
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}
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UNMAP_AFTER_INIT ISAIDEController::ISAIDEController()
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{
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}
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UNMAP_AFTER_INIT ErrorOr<void> ISAIDEController::initialize_channels()
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{
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auto primary_base_io_window = TRY(IOWindow::create_for_io_space(IOAddress(0x1F0), 8));
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auto primary_control_io_window = TRY(IOWindow::create_for_io_space(IOAddress(0x3F6), 4));
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auto secondary_base_io_window = TRY(IOWindow::create_for_io_space(IOAddress(0x170), 8));
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auto secondary_control_io_window = TRY(IOWindow::create_for_io_space(IOAddress(0x376), 4));
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auto initialize_and_enumerate = [](IDEChannel& channel) -> ErrorOr<void> {
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TRY(channel.allocate_resources_for_isa_ide_controller({}));
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TRY(channel.detect_connected_devices());
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return {};
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};
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auto primary_channel_io_window_group = IDEChannel::IOWindowGroup { move(primary_base_io_window), move(primary_control_io_window) };
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auto secondary_channel_io_window_group = IDEChannel::IOWindowGroup { move(secondary_base_io_window), move(secondary_control_io_window) };
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TRY(m_channels.try_append(IDEChannel::create(*this, move(primary_channel_io_window_group), IDEChannel::ChannelType::Primary)));
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TRY(initialize_and_enumerate(m_channels[0]));
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m_channels[0]->enable_irq();
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TRY(m_channels.try_append(IDEChannel::create(*this, move(secondary_channel_io_window_group), IDEChannel::ChannelType::Secondary)));
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TRY(initialize_and_enumerate(m_channels[1]));
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m_channels[1]->enable_irq();
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dbgln("ISA IDE controller detected and initialized");
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return {};
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}
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}
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