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
|
/*
* Copyright (c) 2020-2021, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/RefPtr.h>
#include <AK/Types.h>
#include <Kernel/CommandLine.h>
#include <Kernel/FileSystem/SysFSComponent.h>
#include <Kernel/Firmware/ACPI/Definitions.h>
#include <Kernel/Firmware/ACPI/Initialize.h>
#include <Kernel/Firmware/SysFSFirmware.h>
#include <Kernel/Interrupts/IRQHandler.h>
#include <Kernel/Memory/Region.h>
#include <Kernel/PhysicalAddress.h>
#include <Kernel/VirtualAddress.h>
namespace Kernel::ACPI {
class ACPISysFSDirectory : public SysFSDirectory {
public:
static ErrorOr<NonnullRefPtr<ACPISysFSDirectory>> try_create(FirmwareSysFSDirectory& firmware_directory);
private:
explicit ACPISysFSDirectory(FirmwareSysFSDirectory& firmware_directory);
};
class ACPISysFSComponent : public SysFSComponent {
public:
static NonnullRefPtr<ACPISysFSComponent> create(String name, PhysicalAddress, size_t table_size);
virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
protected:
ErrorOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const;
ACPISysFSComponent(String name, PhysicalAddress, size_t table_size);
PhysicalAddress m_paddr;
size_t m_length;
};
class Parser final : public IRQHandler {
public:
static Parser* the();
static void must_initialize(PhysicalAddress rsdp, PhysicalAddress fadt, u8 irq_number);
virtual StringView purpose() const override { return "ACPI Parser"sv; }
virtual bool handle_irq(const RegisterState&) override;
Optional<PhysicalAddress> find_table(const StringView& signature);
void try_acpi_reboot();
bool can_reboot();
void try_acpi_shutdown();
bool can_shutdown() { return false; }
void enable_aml_parsing();
PhysicalAddress rsdp() const { return m_rsdp; }
PhysicalAddress main_system_description_table() const { return m_main_system_description_table; }
bool is_xsdt_supported() const { return m_xsdt_supported; }
void enumerate_static_tables(Function<void(const StringView&, PhysicalAddress, size_t)>);
virtual bool have_8042() const
{
return m_x86_specific_flags.keyboard_8042;
}
const FADTFlags::HardwareFeatures& hardware_features() const { return m_hardware_flags; }
const FADTFlags::x86_Specific_Flags& x86_specific_flags() const { return m_x86_specific_flags; }
~Parser() {};
private:
Parser(PhysicalAddress rsdp, PhysicalAddress fadt, u8 irq_number);
void locate_static_data();
void locate_main_system_description_table();
void initialize_main_system_description_table();
size_t get_table_size(PhysicalAddress);
u8 get_table_revision(PhysicalAddress);
void process_fadt_data();
bool validate_reset_register();
void access_generic_address(const Structures::GenericAddressStructure&, u32 value);
PhysicalAddress m_rsdp;
PhysicalAddress m_main_system_description_table;
Vector<PhysicalAddress> m_sdt_pointers;
PhysicalAddress m_fadt;
bool m_xsdt_supported { false };
bool m_can_process_bytecode { false };
FADTFlags::HardwareFeatures m_hardware_flags;
FADTFlags::x86_Specific_Flags m_x86_specific_flags;
};
}
|
