a7677f1d9b
For each exposed PCI device in sysfs, there's a new node called "rom" and by reading it, it exposes the raw data of a PCI option ROM blob to a user for examining the blob.
32 lines
1 KiB
C++
32 lines
1 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/Vector.h>
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#include <Kernel/Bus/PCI/Definitions.h>
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#include <Kernel/FileSystem/SysFS/Component.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Bus/PCI/DeviceDirectory.h>
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namespace Kernel {
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class PCIDeviceExpansionROMSysFSComponent : public SysFSComponent {
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public:
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static NonnullLockRefPtr<PCIDeviceExpansionROMSysFSComponent> create(PCIDeviceSysFSDirectory const& device);
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virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
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virtual ~PCIDeviceExpansionROMSysFSComponent() {};
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virtual StringView name() const override { return "rom"sv; }
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protected:
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ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer(size_t offset_in_rom, size_t count) const;
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PCIDeviceExpansionROMSysFSComponent(PCIDeviceSysFSDirectory const& device, size_t option_rom_size);
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NonnullLockRefPtr<PCIDeviceSysFSDirectory> m_device;
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size_t const m_option_rom_size { 0 };
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};
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}
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