100 lines
1.7 KiB
C
100 lines
1.7 KiB
C
#pragma once
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#include "../types.h"
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struct AcpiRSDP;
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struct AcpiXSDT;
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/**
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* Common ACPI table header
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*/
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struct AcpiSDTHeader {
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c8 Signature[4];
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u32 Length;
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u8 Revision;
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u8 Checksum;
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c8 OEMID[6];
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c8 OEMTableID[6];
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u32 OEMRevision;
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u32 CreatorID;
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u32 CreatorRevision;
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};
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/**
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* ACPI Root System Description Pointer
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*/
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struct [[gnu::packed]] AcpiRSDP {
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c8 Signature[8];
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u8 Checksum;
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c8 OEM[6];
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u8 Revision;
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[[gnu::deprecated]] // we dont care :>
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u32 RSDTAddress;
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u32 Length;
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struct AcpiXSDT* XSDTAddress;
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u8 ExtendedChecksum;
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u8 Reserved[3];
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};
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/**
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* The table of tables
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*/
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struct AcpiXSDT {
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struct AcpiSDTHeader Header;
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/// Pointers to other tables
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[[gnu::aligned(4), gnu::packed]]
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struct AcpiSDTHeader* Tables[];
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};
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/**
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* ECM address for the MCFG table
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*/
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struct [[gnu::packed]] AcpiMCFGBridge {
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void* Address;
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u16 SegmentGroup;
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u8 StartBus;
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u8 EndBus;
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u8 Reserved[4];
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};
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/**
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* The memory mapped device table
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*/
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struct AcpiMCFG {
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struct AcpiSDTHeader Header;
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u8 Reserved[8];
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struct AcpiMCFGBridge Bridges[];
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};
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/**
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* Initialize ACPI code
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*/
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void AcpiInitialize();
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/**
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* Check if ACPI is present
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*/
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bool AcpiPresent();
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/**
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* Get the ACPI RSDP, only call if ACPI is present
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*/
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struct AcpiRSDP* AcpiGetRSDP();
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/**
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* Get the ACPI XSDT, only call if ACPI is present
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*/
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struct AcpiXSDT* AcpiGetXSDT();
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/**
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* Get the ACPI XSDT entry count, only call if ACPI is present
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*/
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u32 AcpiGetXSDTLength();
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/**
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* Get the ACPI table with the specified name, returns NULL if not found
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*/
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void* AcpiGetTable(const char TableName[4]);
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