Chloe M.
132 lines
3.2 KiB
C
132 lines
3.2 KiB
C
/*
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* Copyright (c) 2026, Chloe M.
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* Provided under the BSD-3 clause.
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*
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* Description: ACPI definitions
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* Author: Chloe M.
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*/
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#ifndef _ACPI_TABLES_H_
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#define _ACPI_TABLES_H_ 1
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#include <stdef.h>
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/* MADT APIC header types */
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#define APIC_TYPE_LOCAL_APIC 0
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#define APIC_TYPE_IO_APIC 1
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#define APIC_TYPE_INTERRUPT_OVERRIDE 2
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#define OEMID_SIZE 6
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typedef struct PACKED {
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CHAR Signature[4];
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ULONG Length;
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UCHAR Revision;
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UCHAR Checksum;
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CHAR Oemid[OEMID_SIZE];
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CHAR OemTableId[8];
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ULONG OemRevision;
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ULONG CreatorId;
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ULONG CreatorRevision;
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} ACPI_HEADER;
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typedef struct PACKED {
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UQUAD Signature;
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UCHAR Checksum;
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CHAR Oemid[OEMID_SIZE];
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UCHAR Revision;
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ULONG RsdtAddr;
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/* Reserved if revision < 2 */
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ULONG Length;
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UQUAD XsdtAddr;
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UCHAR ExtChecksum;
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UCHAR Reserved[3];
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} ACPI_RSDP;
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/*
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* XSDT or RSDT depending on the revision within the
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* header
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*/
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typedef struct PACKED {
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ACPI_HEADER Header;
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ULONG Tables[];
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} ACPI_ROOT_SDT;
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typedef struct PACKED {
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ACPI_HEADER Header;
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ULONG LapicAddr;
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ULONG Flags;
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} ACPI_MADT;
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typedef struct PACKED {
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UCHAR Type;
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UCHAR Length;
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} ACPI_APIC_HEADER;
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typedef struct PACKED {
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ACPI_APIC_HEADER Header;
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UCHAR ProcessorId;
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UCHAR ApicId;
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ULONG Flags;
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} ACPI_LOCAL_APIC;
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typedef struct PACKED {
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UCHAR AddressSpaceId;
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UCHAR RegisterBitWidth;
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UCHAR RegisterBitOffset;
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UCHAR Reserved;
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UQUAD Address;
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} ACPI_GAS;
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/*
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* ACPI Address Space ID definitions for GAS
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*
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* See section 5.2.3.2 of the ACPI software programming
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* manual.
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*
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* XXX: 0x0B->0x7E is reserved as well as 0x80->0xBF
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* and 0xC0->0xFF is OEM defined. Values other than
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* the ones specified below are either garbage or
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* OEM specific values.
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*/
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#define ACPI_GAS_SYSMEM 0x00 /* System memory space */
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#define ACPI_GAS_SYSIO 0x01 /* System I/O space */
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#define ACPI_GAS_PCICONF 0x02 /* PCI configuration space */
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#define ACPI_GAS_EC 0x03 /* Embedded controller */
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#define ACPI_GAS_SMBUS 0x04 /* System management bus */
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#define ACPI_GAS_CMOS 0x05 /* System CMOS */
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#define ACPI_GAS_PCIBAR 0x06 /* PCI BAR target */
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#define ACPI_GAS_IPMI 0x07 /* IPMI (sensor monitoring) */
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#define ACPI_GAS_GPIO 0x08 /* General Purpose I/O */
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#define ACPI_GAS_GSBUS 0x09 /* GenericSerialBus */
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#define ACPI_GAS_PLATCOM 0x0A /* Platform Communications Channel */
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/*
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* ACPI address size definitions for GAS
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*
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* See section 5.2.3.2 of the ACPI software programming
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* manual.
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*/
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#define ACPI_GAS_UNDEF 0 /* Undefined (legacy reasons) */
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#define ACPI_GAS_BYTE 1 /* Byte access */
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#define ACPI_GAS_WORD 2 /* Word access */
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#define ACPI_GAS_DWORD 3 /* Dword access */
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#define ACPI_GAS_QWORD 4 /* Qword access */
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typedef struct PACKED {
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ACPI_HEADER Header;
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UCHAR HardwareRevId;
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UCHAR ComparatorCount : 5;
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UCHAR CounterSize : 1;
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UCHAR Reserved : 1;
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UCHAR LegacyReplacement : 1;
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USHORT PciVendorId;
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ACPI_GAS Gas;
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UCHAR HpetNumber;
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USHORT MinimumTick;
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UCHAR PageProtection;
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} ACPI_HPET;
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#endif /* _ACPI_TABLES_H_ */
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