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https://github.com/SerenityOS/serenity.git
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3a945051fc
Previously there was a mix of returning plain strings and returning explicit string views using `operator ""sv`. This change switches them all to standardized on `operator ""sv` as it avoids a call to strlen.
104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
/*
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* Copyright (c) 2020-2021, 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/RefPtr.h>
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#include <AK/Types.h>
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#include <Kernel/CommandLine.h>
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#include <Kernel/FileSystem/SysFSComponent.h>
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#include <Kernel/Firmware/ACPI/Definitions.h>
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#include <Kernel/Firmware/ACPI/Initialize.h>
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#include <Kernel/Firmware/SysFSFirmware.h>
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#include <Kernel/Interrupts/IRQHandler.h>
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#include <Kernel/Memory/Region.h>
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#include <Kernel/PhysicalAddress.h>
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#include <Kernel/VirtualAddress.h>
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namespace Kernel::ACPI {
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class ACPISysFSDirectory : public SysFSDirectory {
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public:
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static KResultOr<NonnullRefPtr<ACPISysFSDirectory>> try_create(FirmwareSysFSDirectory& firmware_directory);
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private:
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explicit ACPISysFSDirectory(FirmwareSysFSDirectory& firmware_directory);
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};
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class ACPISysFSComponent : public SysFSComponent {
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public:
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static NonnullRefPtr<ACPISysFSComponent> create(String name, PhysicalAddress, size_t table_size);
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virtual KResultOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const override;
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protected:
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KResultOr<NonnullOwnPtr<KBuffer>> try_to_generate_buffer() const;
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ACPISysFSComponent(String name, PhysicalAddress, size_t table_size);
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PhysicalAddress m_paddr;
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size_t m_length;
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};
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class Parser final : public IRQHandler {
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public:
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static Parser* the();
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static void must_initialize(PhysicalAddress rsdp, PhysicalAddress fadt, u8 irq_number);
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virtual StringView purpose() const override { return "ACPI Parser"sv; }
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virtual bool handle_irq(const RegisterState&) override;
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Optional<PhysicalAddress> find_table(const StringView& signature);
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void try_acpi_reboot();
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bool can_reboot();
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void try_acpi_shutdown();
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bool can_shutdown() { return false; }
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void enable_aml_parsing();
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PhysicalAddress rsdp() const { return m_rsdp; }
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PhysicalAddress main_system_description_table() const { return m_main_system_description_table; }
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bool is_xsdt_supported() const { return m_xsdt_supported; }
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void enumerate_static_tables(Function<void(const StringView&, PhysicalAddress, size_t)>);
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virtual bool have_8042() const
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{
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return m_x86_specific_flags.keyboard_8042;
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}
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const FADTFlags::HardwareFeatures& hardware_features() const { return m_hardware_flags; }
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const FADTFlags::x86_Specific_Flags& x86_specific_flags() const { return m_x86_specific_flags; }
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~Parser() {};
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private:
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Parser(PhysicalAddress rsdp, PhysicalAddress fadt, u8 irq_number);
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void locate_static_data();
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void locate_main_system_description_table();
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void initialize_main_system_description_table();
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size_t get_table_size(PhysicalAddress);
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u8 get_table_revision(PhysicalAddress);
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void process_fadt_data();
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bool validate_reset_register();
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void access_generic_address(const Structures::GenericAddressStructure&, u32 value);
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PhysicalAddress m_rsdp;
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PhysicalAddress m_main_system_description_table;
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Vector<PhysicalAddress> m_sdt_pointers;
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PhysicalAddress m_fadt;
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bool m_xsdt_supported { false };
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bool m_can_process_bytecode { false };
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FADTFlags::HardwareFeatures m_hardware_flags;
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FADTFlags::x86_Specific_Flags m_x86_specific_flags;
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};
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}
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