blob: 1283d7e5c8363ecf965df59d371aadaa6a92a386 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
#include "kapi/acpi.hpp"
#include "kapi/memory.hpp"
#include "kapi/system.hpp"
#include "kernel/acpi/manager.hpp"
#include <kstd/memory>
#include <kstd/units>
#include <algorithm>
#include <atomic>
#include <bit>
#include <cstddef>
#include <cstdint>
#include <optional>
#include <span>
#include <string_view>
namespace kapi::acpi
{
namespace
{
auto constinit manager = std::optional<kernel::acpi::manager>{};
} // namespace
auto root_system_description_pointer::oem_id() const noexcept -> std::string_view
{
return {m_oem_id.data(), m_oem_id.size()};
}
auto root_system_description_pointer::revision() const noexcept -> std::uint8_t
{
return m_revision;
}
auto root_system_description_pointer::signature() const noexcept -> std::string_view
{
return {m_signature.data(), m_signature.size()};
}
auto root_system_description_pointer::table_address() const noexcept -> memory::physical_address
{
auto raw = std::bit_cast<std::uint32_t>(m_rsdt_address);
return memory::physical_address{static_cast<std::uintptr_t>(raw)};
}
auto root_system_description_pointer::validate() const noexcept -> bool
{
return validate_checksum({reinterpret_cast<std::byte const *>(this), sizeof(root_system_description_pointer)});
}
auto extended_system_description_pointer::length() const noexcept -> kstd::units::bytes
{
return kstd::units::bytes{m_length};
}
auto extended_system_description_pointer::table_address() const noexcept -> memory::physical_address
{
return memory::physical_address{std::bit_cast<std::uintptr_t>(m_xsdt_address)};
}
auto extended_system_description_pointer::validate() const noexcept -> bool
{
return validate_checksum({reinterpret_cast<std::byte const *>(this), m_length});
}
[[nodiscard]] auto system_description_table_header::checksum() const noexcept -> std::uint8_t
{
return m_checksum;
}
[[nodiscard]] auto system_description_table_header::creator_revision() const noexcept -> std::uint32_t
{
return m_creator_revision;
}
[[nodiscard]] auto system_description_table_header::creator_id() const noexcept -> std::uint32_t
{
return m_creator_id;
}
[[nodiscard]] auto system_description_table_header::length() const noexcept -> kstd::units::bytes
{
return kstd::units::bytes{m_length};
}
[[nodiscard]] auto system_description_table_header::oem_id() const noexcept -> std::string_view
{
return {m_oem_id.data(), m_oem_id.size()};
}
[[nodiscard]] auto system_description_table_header::oem_revision() const noexcept -> std::uint32_t
{
return m_oem_revision;
}
[[nodiscard]] auto system_description_table_header::oem_table_id() const noexcept -> std::string_view
{
return {m_oem_table_id.data(), m_oem_table_id.size()};
}
[[nodiscard]] auto system_description_table_header::revision() const noexcept -> std::uint8_t
{
return m_revision;
}
[[nodiscard]] auto system_description_table_header::signature() const noexcept -> std::string_view
{
return {m_signature.data(), m_signature.size()};
}
[[nodiscard]] auto madt_header::local_interrupt_controller_address() const noexcept -> memory::physical_address
{
return memory::physical_address{static_cast<std::uintptr_t>(m_local_interrupt_controller_address)};
}
[[nodiscard]] auto madt_header::flags() const noexcept -> std::uint32_t
{
return m_flags;
}
[[nodiscard]] auto madt_subtable_header::type() const noexcept -> std::uint8_t
{
return m_type;
}
[[nodiscard]] auto madt_subtable_header::length() const noexcept -> std::size_t
{
return m_length;
}
[[nodiscard]] auto madt_local_apic::apic_id() const noexcept -> std::uint8_t
{
return m_apic_id;
}
[[nodiscard]] auto madt_local_apic::flags() const noexcept -> std::uint32_t
{
return m_flags;
}
[[nodiscard]] auto madt_local_apic::processor_id() const noexcept -> std::uint32_t
{
return m_processor_id;
}
auto init(root_system_description_pointer const & sdp) -> bool
{
auto static constinit initialized = std::atomic_flag{};
if (initialized.test_and_set())
{
system::panic("[OS:ACPI] The ACPI manager has already been initialized!");
}
manager.emplace(sdp);
return manager->load_tables();
}
auto validate_checksum(std::span<std::byte const> data) -> bool
{
auto sum = std::ranges::fold_left(data, std::uint8_t{}, [](auto acc, auto byte) {
return static_cast<std::uint8_t>(acc + static_cast<std::uint8_t>(byte));
});
return sum == 0;
}
auto get_table(std::string_view signature) -> kstd::observer_ptr<system_description_table_header const>
{
return manager->get_table(signature);
}
}; // namespace kapi::acpi
|
