jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#pragma once
8
9#include <AK/DeprecatedString.h>
10#include <AK/HashMap.h>
11#include <AK/NonnullOwnPtr.h>
12#include <AK/RefCounted.h>
13#include <AK/RefPtr.h>
14#include <AK/StringView.h>
15#include <LibCore/MappedFile.h>
16
17namespace PCIDB {
18
19struct Subsystem {
20 u16 vendor_id;
21 u16 device_id;
22 StringView name;
23};
24
25struct Device {
26 u16 id;
27 StringView name;
28 HashMap<int, NonnullOwnPtr<Subsystem>> subsystems;
29};
30
31struct Vendor {
32 u16 id;
33 StringView name;
34 HashMap<int, NonnullOwnPtr<Device>> devices;
35};
36
37struct ProgrammingInterface {
38 u8 id { 0 };
39 StringView name {};
40};
41
42struct Subclass {
43 u8 id { 0 };
44 StringView name {};
45 HashMap<int, NonnullOwnPtr<ProgrammingInterface>> programming_interfaces;
46};
47
48struct Class {
49 u8 id { 0 };
50 StringView name {};
51 HashMap<int, NonnullOwnPtr<Subclass>> subclasses;
52};
53
54class Database : public RefCounted<Database> {
55public:
56 static RefPtr<Database> open(DeprecatedString const& filename);
57 static RefPtr<Database> open() { return open("/res/pci.ids"); };
58
59 const StringView get_vendor(u16 vendor_id) const;
60 const StringView get_device(u16 vendor_id, u16 device_id) const;
61 const StringView get_subsystem(u16 vendor_id, u16 device_id, u16 subvendor_id, u16 subdevice_id) const;
62 const StringView get_class(u8 class_id) const;
63 const StringView get_subclass(u8 class_id, u8 subclass_id) const;
64 const StringView get_programming_interface(u8 class_id, u8 subclass_id, u8 programming_interface_id) const;
65
66private:
67 explicit Database(NonnullRefPtr<Core::MappedFile> file)
68 : m_file(move(file))
69 {
70 }
71
72 int init();
73
74 enum ParseMode {
75 UnknownMode,
76 VendorMode,
77 ClassMode,
78 };
79
80 NonnullRefPtr<Core::MappedFile> m_file;
81 StringView m_view {};
82 HashMap<int, NonnullOwnPtr<Vendor>> m_vendors;
83 HashMap<int, NonnullOwnPtr<Class>> m_classes;
84 bool m_ready { false };
85};
86
87}