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https://github.com/RGBCube/serenity
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70ad18fbcd
This change is another minor step towards removing `AK::String` from the Kernel. Instead of dynamically allocating the storage_name we can instead allocate it via a KString in the factory for each device, and then push the device name down into the StorageDevice base class. We don't have a way of doing `AK::String::formatted(..)` with a KString at the moment, so cleaning that up will be left for a later day.
60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
/*
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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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#include <AK/StringView.h>
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#include <Kernel/Devices/DeviceManagement.h>
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#include <Kernel/FileSystem/OpenFileDescription.h>
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#include <Kernel/Sections.h>
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#include <Kernel/Storage/IDEChannel.h>
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#include <Kernel/Storage/IDEController.h>
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#include <Kernel/Storage/PATADiskDevice.h>
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#include <Kernel/Storage/StorageManagement.h>
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namespace Kernel {
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UNMAP_AFTER_INIT NonnullRefPtr<PATADiskDevice> PATADiskDevice::create(const IDEController& controller, IDEChannel& channel, DriveType type, InterfaceType interface_type, u16 capabilities, u64 max_addressable_block)
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{
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auto minor_device_number = StorageManagement::minor_number();
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// FIXME: We need a way of formatting strings with KString.
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auto device_name = String::formatted("hd{:c}", 'a' + minor_device_number);
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auto device_name_kstring = KString::must_create(device_name.view());
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auto device_or_error = DeviceManagement::try_create_device<PATADiskDevice>(controller, channel, type, interface_type, capabilities, max_addressable_block, minor_device_number, move(device_name_kstring));
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// FIXME: Find a way to propagate errors
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VERIFY(!device_or_error.is_error());
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return device_or_error.release_value();
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}
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UNMAP_AFTER_INIT PATADiskDevice::PATADiskDevice(const IDEController& controller, IDEChannel& channel, DriveType type, InterfaceType interface_type, u16 capabilities, u64 max_addressable_block, int minor_device_number, NonnullOwnPtr<KString> device_name)
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: StorageDevice(controller, StorageManagement::major_number(), minor_device_number, 512, max_addressable_block, move(device_name))
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, m_capabilities(capabilities)
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, m_channel(channel)
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, m_drive_type(type)
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, m_interface_type(interface_type)
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{
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}
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UNMAP_AFTER_INIT PATADiskDevice::~PATADiskDevice()
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{
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}
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StringView PATADiskDevice::class_name() const
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{
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return "PATADiskDevice"sv;
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}
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void PATADiskDevice::start_request(AsyncBlockDeviceRequest& request)
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{
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m_channel->start_request(request, is_slave(), m_capabilities);
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}
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bool PATADiskDevice::is_slave() const
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{
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return m_drive_type == DriveType::Slave;
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}
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}
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