mirror of
https://github.com/RGBCube/serenity
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1a08ac72ad
This API was a mostly gratuitous deviation from POSIX that gave up some portability in exchange for avoiding the occasional strlen(). I don't think that was actually achieving anything valuable, so let's just chill out and have the same open() API as everyone else. :^)
107 lines
3.2 KiB
C++
107 lines
3.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/HashMap.h>
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#include <AK/MappedFile.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/RefCounted.h>
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#include <AK/RefPtr.h>
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#include <AK/String.h>
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#include <AK/StringView.h>
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namespace PCIDB {
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struct Subsystem {
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u16 vendor_id;
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u16 device_id;
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StringView name;
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};
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struct Device {
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u16 id;
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StringView name;
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HashMap<int, NonnullOwnPtr<Subsystem>> subsystems;
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};
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struct Vendor {
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u16 id;
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StringView name;
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HashMap<int, NonnullOwnPtr<Device>> devices;
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};
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struct ProgrammingInterface {
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u8 id { 0 };
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StringView name {};
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};
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struct Subclass {
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u8 id { 0 };
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StringView name {};
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HashMap<int, NonnullOwnPtr<ProgrammingInterface>> programming_interfaces;
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};
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struct Class {
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u8 id { 0 };
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StringView name {};
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HashMap<int, NonnullOwnPtr<Subclass>> subclasses;
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};
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class Database : public RefCounted<Database> {
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public:
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static RefPtr<Database> open(const String& file_name);
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static RefPtr<Database> open() { return open("/res/pci.ids"); };
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const StringView get_vendor(u16 vendor_id) const;
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const StringView get_device(u16 vendor_id, u16 device_id) const;
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const StringView get_subsystem(u16 vendor_id, u16 device_id, u16 subvendor_id, u16 subdevice_id) const;
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const StringView get_class(u8 class_id) const;
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const StringView get_subclass(u8 class_id, u8 subclass_id) const;
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const StringView get_programming_interface(u8 class_id, u8 subclass_id, u8 programming_interface_id) const;
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private:
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explicit Database(NonnullRefPtr<MappedFile> file)
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: m_file(move(file))
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{
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}
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int init();
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enum ParseMode {
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UnknownMode,
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VendorMode,
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ClassMode,
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};
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NonnullRefPtr<MappedFile> m_file;
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StringView m_view {};
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HashMap<int, NonnullOwnPtr<Vendor>> m_vendors;
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HashMap<int, NonnullOwnPtr<Class>> m_classes;
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bool m_ready { false };
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};
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}
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