mirror of
https://github.com/RGBCube/serenity
synced 2025-06-01 02:18:12 +00:00
79fa9765ca
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
51 lines
1.5 KiB
C++
51 lines
1.5 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/Bitmap.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <Kernel/Bus/PCI/Definitions.h>
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#include <Kernel/FileSystem/SysFS.h>
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namespace Kernel::PCI {
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class PCIBusSysFSDirectory final : public SysFSDirectory {
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public:
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static void initialize();
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private:
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PCIBusSysFSDirectory();
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};
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class PCIDeviceSysFSDirectory final : public SysFSDirectory {
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public:
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static NonnullRefPtr<PCIDeviceSysFSDirectory> create(const SysFSDirectory&, Address);
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const Address& address() const { return m_address; }
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private:
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PCIDeviceSysFSDirectory(const SysFSDirectory&, Address);
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Address m_address;
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};
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class PCIDeviceAttributeSysFSComponent : public SysFSComponent {
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public:
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static NonnullRefPtr<PCIDeviceAttributeSysFSComponent> create(String name, const PCIDeviceSysFSDirectory& device, PCI::RegisterOffset offset, size_t field_bytes_width);
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virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
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virtual ~PCIDeviceAttributeSysFSComponent() {};
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protected:
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ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const;
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PCIDeviceAttributeSysFSComponent(String name, const PCIDeviceSysFSDirectory& device, PCI::RegisterOffset offset, size_t field_bytes_width);
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NonnullRefPtr<PCIDeviceSysFSDirectory> m_device;
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PCI::RegisterOffset m_offset;
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size_t m_field_bytes_width;
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};
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}
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