/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ /****************************************************************************** * * Name: actbl.h - Basic ACPI Table Definitions * * Copyright (C) 2000 - 2023, Intel Corp. * *****************************************************************************/ #ifndef __ACTBL_H__ #define __ACTBL_H__ /******************************************************************************* * * Fundamental ACPI tables * * This file contains definitions for the ACPI tables that are directly consumed * by ACPICA. All other tables are consumed by the OS-dependent ACPI-related * device drivers and other OS support code. * * The RSDP and FACS do not use the common ACPI table header. All other ACPI * tables use the header. * ******************************************************************************/ /* * Values for description table header signatures for tables defined in this * file. Useful because they make it more difficult to inadvertently type in * the wrong signature. */ #define ACPI_SIG_DSDT … #define ACPI_SIG_FADT … #define ACPI_SIG_FACS … #define ACPI_SIG_OSDT … #define ACPI_SIG_PSDT … #define ACPI_SIG_RSDP … #define ACPI_SIG_RSDT … #define ACPI_SIG_XSDT … #define ACPI_SIG_SSDT … #define ACPI_RSDP_NAME … #define ACPI_OEM_NAME … /* * All tables and structures must be byte-packed to match the ACPI * specification, since the tables are provided by the system BIOS */ #pragma pack(1) /* * Note: C bitfields are not used for this reason: * * "Bitfields are great and easy to read, but unfortunately the C language * does not specify the layout of bitfields in memory, which means they are * essentially useless for dealing with packed data in on-disk formats or * binary wire protocols." (Or ACPI tables and buffers.) "If you ask me, * this decision was a design error in C. Ritchie could have picked an order * and stuck with it." Norman Ramsey. * See http://stackoverflow.com/a/1053662/41661 */ /******************************************************************************* * * Master ACPI Table Header. This common header is used by all ACPI tables * except the RSDP and FACS. * ******************************************************************************/ struct acpi_table_header { … }; /******************************************************************************* * * GAS - Generic Address Structure (ACPI 2.0+) * * Note: Since this structure is used in the ACPI tables, it is byte aligned. * If misaligned access is not supported by the hardware, accesses to the * 64-bit Address field must be performed with care. * ******************************************************************************/ struct acpi_generic_address { … }; /******************************************************************************* * * RSDP - Root System Description Pointer (Signature is "RSD PTR ") * Version 2 * ******************************************************************************/ struct acpi_table_rsdp { … }; /* Standalone struct for the ACPI 1.0 RSDP */ struct acpi_rsdp_common { … }; /* Standalone struct for the extended part of the RSDP (ACPI 2.0+) */ struct acpi_rsdp_extension { … }; /******************************************************************************* * * RSDT/XSDT - Root System Description Tables * Version 1 (both) * ******************************************************************************/ struct acpi_table_rsdt { … }; struct acpi_table_xsdt { … }; #define ACPI_RSDT_ENTRY_SIZE … #define ACPI_XSDT_ENTRY_SIZE … /******************************************************************************* * * FACS - Firmware ACPI Control Structure (FACS) * ******************************************************************************/ struct acpi_table_facs { … }; /* Masks for global_lock flag field above */ #define ACPI_GLOCK_PENDING … #define ACPI_GLOCK_OWNED … /* Masks for Flags field above */ #define ACPI_FACS_S4_BIOS_PRESENT … #define ACPI_FACS_64BIT_WAKE … /* Masks for ospm_flags field above */ #define ACPI_FACS_64BIT_ENVIRONMENT … /******************************************************************************* * * FADT - Fixed ACPI Description Table (Signature "FACP") * Version 6 * ******************************************************************************/ /* Fields common to all versions of the FADT */ struct acpi_table_fadt { … }; /* Masks for FADT IA-PC Boot Architecture Flags (boot_flags) [Vx]=Introduced in this FADT revision */ #define ACPI_FADT_LEGACY_DEVICES … #define ACPI_FADT_8042 … #define ACPI_FADT_NO_VGA … #define ACPI_FADT_NO_MSI … #define ACPI_FADT_NO_ASPM … #define ACPI_FADT_NO_CMOS_RTC … #define FADT2_REVISION_ID … /* Masks for FADT ARM Boot Architecture Flags (arm_boot_flags) ACPI 5.1 */ #define ACPI_FADT_PSCI_COMPLIANT … #define ACPI_FADT_PSCI_USE_HVC … /* Masks for FADT flags */ #define ACPI_FADT_WBINVD … #define ACPI_FADT_WBINVD_FLUSH … #define ACPI_FADT_C1_SUPPORTED … #define ACPI_FADT_C2_MP_SUPPORTED … #define ACPI_FADT_POWER_BUTTON … #define ACPI_FADT_SLEEP_BUTTON … #define ACPI_FADT_FIXED_RTC … #define ACPI_FADT_S4_RTC_WAKE … #define ACPI_FADT_32BIT_TIMER … #define ACPI_FADT_DOCKING_SUPPORTED … #define ACPI_FADT_RESET_REGISTER … #define ACPI_FADT_SEALED_CASE … #define ACPI_FADT_HEADLESS … #define ACPI_FADT_SLEEP_TYPE … #define ACPI_FADT_PCI_EXPRESS_WAKE … #define ACPI_FADT_PLATFORM_CLOCK … #define ACPI_FADT_S4_RTC_VALID … #define ACPI_FADT_REMOTE_POWER_ON … #define ACPI_FADT_APIC_CLUSTER … #define ACPI_FADT_APIC_PHYSICAL … #define ACPI_FADT_HW_REDUCED … #define ACPI_FADT_LOW_POWER_S0 … /* Values for preferred_profile (Preferred Power Management Profiles) */ enum acpi_preferred_pm_profiles { … }; /* Values for sleep_status and sleep_control registers (V5+ FADT) */ #define ACPI_X_WAKE_STATUS … #define ACPI_X_SLEEP_TYPE_MASK … #define ACPI_X_SLEEP_TYPE_POSITION … #define ACPI_X_SLEEP_ENABLE … /* Reset to default packing */ #pragma pack() /* * Internal table-related structures */ acpi_name_union; /* Internal ACPI Table Descriptor. One per ACPI table. */ struct acpi_table_desc { … }; /* * Maximum value of the validation_count field in struct acpi_table_desc. * When reached, validation_count cannot be changed any more and the table will * be permanently regarded as validated. * * This is to prevent situations in which unbalanced table get/put operations * may cause premature table unmapping in the OS to happen. * * The maximum validation count can be defined to any value, but should be * greater than the maximum number of OS early stage mapping slots to avoid * leaking early stage table mappings to the late stage. */ #define ACPI_MAX_TABLE_VALIDATIONS … /* Masks for Flags field above */ #define ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL … #define ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL … #define ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL … #define ACPI_TABLE_ORIGIN_MASK … #define ACPI_TABLE_IS_VERIFIED … #define ACPI_TABLE_IS_LOADED … /* * Get the remaining ACPI tables */ #include <acpi/actbl1.h> #include <acpi/actbl2.h> #include <acpi/actbl3.h> /* Macros used to generate offsets to specific table fields */ #define ACPI_FADT_OFFSET(f) … /* * Sizes of the various flavors of FADT. We need to look closely * at the FADT length because the version number essentially tells * us nothing because of many BIOS bugs where the version does not * match the expected length. In other words, the length of the * FADT is the bottom line as to what the version really is. * * For reference, the values below are as follows: * FADT V1 size: 0x074 * FADT V2 size: 0x084 * FADT V3 size: 0x0F4 * FADT V4 size: 0x0F4 * FADT V5 size: 0x10C * FADT V6 size: 0x114 */ #define ACPI_FADT_V1_SIZE … #define ACPI_FADT_V2_SIZE … #define ACPI_FADT_V3_SIZE … #define ACPI_FADT_V5_SIZE … #define ACPI_FADT_V6_SIZE … #define ACPI_FADT_CONFORMANCE … #endif /* __ACTBL_H__ */
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