Release 4.12 include/acpi/actbl.h
/******************************************************************************
*
* Name: actbl.h - Basic ACPI Table Definitions
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2017, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#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 "DSDT"
/* Differentiated System Description Table */
#define ACPI_SIG_FADT "FACP"
/* Fixed ACPI Description Table */
#define ACPI_SIG_FACS "FACS"
/* Firmware ACPI Control Structure */
#define ACPI_SIG_OSDT "OSDT"
/* Override System Description Table */
#define ACPI_SIG_PSDT "PSDT"
/* Persistent System Description Table */
#define ACPI_SIG_RSDP "RSD PTR "
/* Root System Description Pointer */
#define ACPI_SIG_RSDT "RSDT"
/* Root System Description Table */
#define ACPI_SIG_XSDT "XSDT"
/* Extended System Description Table */
#define ACPI_SIG_SSDT "SSDT"
/* Secondary System Description Table */
#define ACPI_RSDP_NAME "RSDP"
/* Short name for RSDP, not signature */
/*
* 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 {
char signature[ACPI_NAME_SIZE]; /* ASCII table signature */
u32 length; /* Length of table in bytes, including this header */
u8 revision; /* ACPI Specification minor version number */
u8 checksum; /* To make sum of entire table == 0 */
char oem_id[ACPI_OEM_ID_SIZE]; /* ASCII OEM identification */
char oem_table_id[ACPI_OEM_TABLE_ID_SIZE]; /* ASCII OEM table identification */
u32 oem_revision; /* OEM revision number */
char asl_compiler_id[ACPI_NAME_SIZE]; /* ASCII ASL compiler vendor ID */
u32 asl_compiler_revision; /* ASL compiler version */
};
/*******************************************************************************
*
* 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 {
u8 space_id; /* Address space where struct or register exists */
u8 bit_width; /* Size in bits of given register */
u8 bit_offset; /* Bit offset within the register */
u8 access_width; /* Minimum Access size (ACPI 3.0) */
u64 address; /* 64-bit address of struct or register */
};
/*******************************************************************************
*
* RSDP - Root System Description Pointer (Signature is "RSD PTR ")
* Version 2
*
******************************************************************************/
struct acpi_table_rsdp {
char signature[8]; /* ACPI signature, contains "RSD PTR " */
u8 checksum; /* ACPI 1.0 checksum */
char oem_id[ACPI_OEM_ID_SIZE]; /* OEM identification */
u8 revision; /* Must be (0) for ACPI 1.0 or (2) for ACPI 2.0+ */
u32 rsdt_physical_address; /* 32-bit physical address of the RSDT */
u32 length; /* Table length in bytes, including header (ACPI 2.0+) */
u64 xsdt_physical_address; /* 64-bit physical address of the XSDT (ACPI 2.0+) */
u8 extended_checksum; /* Checksum of entire table (ACPI 2.0+) */
u8 reserved[3]; /* Reserved, must be zero */
};
/* Standalone struct for the ACPI 1.0 RSDP */
struct acpi_rsdp_common {
char signature[8];
u8 checksum;
char oem_id[ACPI_OEM_ID_SIZE];
u8 revision;
u32 rsdt_physical_address;
};
/* Standalone struct for the extended part of the RSDP (ACPI 2.0+) */
struct acpi_rsdp_extension {
u32 length;
u64 xsdt_physical_address;
u8 extended_checksum;
u8 reserved[3];
};
/*******************************************************************************
*
* RSDT/XSDT - Root System Description Tables
* Version 1 (both)
*
******************************************************************************/
struct acpi_table_rsdt {
struct acpi_table_header header; /* Common ACPI table header */
u32 table_offset_entry[1]; /* Array of pointers to ACPI tables */
};
struct acpi_table_xsdt {
struct acpi_table_header header; /* Common ACPI table header */
u64 table_offset_entry[1]; /* Array of pointers to ACPI tables */
};
#define ACPI_RSDT_ENTRY_SIZE (sizeof (u32))
#define ACPI_XSDT_ENTRY_SIZE (sizeof (u64))
/*******************************************************************************
*
* FACS - Firmware ACPI Control Structure (FACS)
*
******************************************************************************/
struct acpi_table_facs {
char signature[4]; /* ASCII table signature */
u32 length; /* Length of structure, in bytes */
u32 hardware_signature; /* Hardware configuration signature */
u32 firmware_waking_vector; /* 32-bit physical address of the Firmware Waking Vector */
u32 global_lock; /* Global Lock for shared hardware resources */
u32 flags;
u64 xfirmware_waking_vector; /* 64-bit version of the Firmware Waking Vector (ACPI 2.0+) */
u8 version; /* Version of this table (ACPI 2.0+) */
u8 reserved[3]; /* Reserved, must be zero */
u32 ospm_flags; /* Flags to be set by OSPM (ACPI 4.0) */
u8 reserved1[24]; /* Reserved, must be zero */
};
/* Masks for global_lock flag field above */
#define ACPI_GLOCK_PENDING (1)
/* 00: Pending global lock ownership */
#define ACPI_GLOCK_OWNED (1<<1)
/* 01: Global lock is owned */
/* Masks for Flags field above */
#define ACPI_FACS_S4_BIOS_PRESENT (1)
/* 00: S4BIOS support is present */
#define ACPI_FACS_64BIT_WAKE (1<<1)
/* 01: 64-bit wake vector supported (ACPI 4.0) */
/* Masks for ospm_flags field above */
#define ACPI_FACS_64BIT_ENVIRONMENT (1)
/* 00: 64-bit wake environment is required (ACPI 4.0) */
/*******************************************************************************
*
* FADT - Fixed ACPI Description Table (Signature "FACP")
* Version 6
*
******************************************************************************/
/* Fields common to all versions of the FADT */
struct acpi_table_fadt {
struct acpi_table_header header; /* Common ACPI table header */
u32 facs; /* 32-bit physical address of FACS */
u32 dsdt; /* 32-bit physical address of DSDT */
u8 model; /* System Interrupt Model (ACPI 1.0) - not used in ACPI 2.0+ */
u8 preferred_profile; /* Conveys preferred power management profile to OSPM. */
u16 sci_interrupt; /* System vector of SCI interrupt */
u32 smi_command; /* 32-bit Port address of SMI command port */
u8 acpi_enable; /* Value to write to SMI_CMD to enable ACPI */
u8 acpi_disable; /* Value to write to SMI_CMD to disable ACPI */
u8 s4_bios_request; /* Value to write to SMI_CMD to enter S4BIOS state */
u8 pstate_control; /* Processor performance state control */
u32 pm1a_event_block; /* 32-bit port address of Power Mgt 1a Event Reg Blk */
u32 pm1b_event_block; /* 32-bit port address of Power Mgt 1b Event Reg Blk */
u32 pm1a_control_block; /* 32-bit port address of Power Mgt 1a Control Reg Blk */
u32 pm1b_control_block; /* 32-bit port address of Power Mgt 1b Control Reg Blk */
u32 pm2_control_block; /* 32-bit port address of Power Mgt 2 Control Reg Blk */
u32 pm_timer_block; /* 32-bit port address of Power Mgt Timer Ctrl Reg Blk */
u32 gpe0_block; /* 32-bit port address of General Purpose Event 0 Reg Blk */
u32 gpe1_block; /* 32-bit port address of General Purpose Event 1 Reg Blk */
u8 pm1_event_length; /* Byte Length of ports at pm1x_event_block */
u8 pm1_control_length; /* Byte Length of ports at pm1x_control_block */
u8 pm2_control_length; /* Byte Length of ports at pm2_control_block */
u8 pm_timer_length; /* Byte Length of ports at pm_timer_block */
u8 gpe0_block_length; /* Byte Length of ports at gpe0_block */
u8 gpe1_block_length; /* Byte Length of ports at gpe1_block */
u8 gpe1_base; /* Offset in GPE number space where GPE1 events start */
u8 cst_control; /* Support for the _CST object and C-States change notification */
u16 c2_latency; /* Worst case HW latency to enter/exit C2 state */
u16 c3_latency; /* Worst case HW latency to enter/exit C3 state */
u16 flush_size; /* Processor memory cache line width, in bytes */
u16 flush_stride; /* Number of flush strides that need to be read */
u8 duty_offset; /* Processor duty cycle index in processor P_CNT reg */
u8 duty_width; /* Processor duty cycle value bit width in P_CNT register */
u8 day_alarm; /* Index to day-of-month alarm in RTC CMOS RAM */
u8 month_alarm; /* Index to month-of-year alarm in RTC CMOS RAM */
u8 century; /* Index to century in RTC CMOS RAM */
u16 boot_flags; /* IA-PC Boot Architecture Flags (see below for individual flags) */
u8 reserved; /* Reserved, must be zero */
u32 flags; /* Miscellaneous flag bits (see below for individual flags) */
struct acpi_generic_address reset_register; /* 64-bit address of the Reset register */
u8 reset_value; /* Value to write to the reset_register port to reset the system */
u16 arm_boot_flags; /* ARM-Specific Boot Flags (see below for individual flags) (ACPI 5.1) */
u8 minor_revision; /* FADT Minor Revision (ACPI 5.1) */
u64 Xfacs; /* 64-bit physical address of FACS */
u64 Xdsdt; /* 64-bit physical address of DSDT */
struct acpi_generic_address xpm1a_event_block; /* 64-bit Extended Power Mgt 1a Event Reg Blk address */
struct acpi_generic_address xpm1b_event_block; /* 64-bit Extended Power Mgt 1b Event Reg Blk address */
struct acpi_generic_address xpm1a_control_block; /* 64-bit Extended Power Mgt 1a Control Reg Blk address */
struct acpi_generic_address xpm1b_control_block; /* 64-bit Extended Power Mgt 1b Control Reg Blk address */
struct acpi_generic_address xpm2_control_block; /* 64-bit Extended Power Mgt 2 Control Reg Blk address */
struct acpi_generic_address xpm_timer_block; /* 64-bit Extended Power Mgt Timer Ctrl Reg Blk address */
struct acpi_generic_address xgpe0_block; /* 64-bit Extended General Purpose Event 0 Reg Blk address */
struct acpi_generic_address xgpe1_block; /* 64-bit Extended General Purpose Event 1 Reg Blk address */
struct acpi_generic_address sleep_control; /* 64-bit Sleep Control register (ACPI 5.0) */
struct acpi_generic_address sleep_status; /* 64-bit Sleep Status register (ACPI 5.0) */
u64 hypervisor_id; /* Hypervisor Vendor ID (ACPI 6.0) */
};
/* Masks for FADT IA-PC Boot Architecture Flags (boot_flags) [Vx]=Introduced in this FADT revision */
#define ACPI_FADT_LEGACY_DEVICES (1)
/* 00: [V2] System has LPC or ISA bus devices */
#define ACPI_FADT_8042 (1<<1)
/* 01: [V3] System has an 8042 controller on port 60/64 */
#define ACPI_FADT_NO_VGA (1<<2)
/* 02: [V4] It is not safe to probe for VGA hardware */
#define ACPI_FADT_NO_MSI (1<<3)
/* 03: [V4] Message Signaled Interrupts (MSI) must not be enabled */
#define ACPI_FADT_NO_ASPM (1<<4)
/* 04: [V4] PCIe ASPM control must not be enabled */
#define ACPI_FADT_NO_CMOS_RTC (1<<5)
/* 05: [V5] No CMOS real-time clock present */
#define FADT2_REVISION_ID 3
/* Masks for FADT ARM Boot Architecture Flags (arm_boot_flags) ACPI 5.1 */
#define ACPI_FADT_PSCI_COMPLIANT (1)
/* 00: [V5+] PSCI 0.2+ is implemented */
#define ACPI_FADT_PSCI_USE_HVC (1<<1)
/* 01: [V5+] HVC must be used instead of SMC as the PSCI conduit */
/* Masks for FADT flags */
#define ACPI_FADT_WBINVD (1)
/* 00: [V1] The WBINVD instruction works properly */
#define ACPI_FADT_WBINVD_FLUSH (1<<1)
/* 01: [V1] WBINVD flushes but does not invalidate caches */
#define ACPI_FADT_C1_SUPPORTED (1<<2)
/* 02: [V1] All processors support C1 state */
#define ACPI_FADT_C2_MP_SUPPORTED (1<<3)
/* 03: [V1] C2 state works on MP system */
#define ACPI_FADT_POWER_BUTTON (1<<4)
/* 04: [V1] Power button is handled as a control method device */
#define ACPI_FADT_SLEEP_BUTTON (1<<5)
/* 05: [V1] Sleep button is handled as a control method device */
#define ACPI_FADT_FIXED_RTC (1<<6)
/* 06: [V1] RTC wakeup status is not in fixed register space */
#define ACPI_FADT_S4_RTC_WAKE (1<<7)
/* 07: [V1] RTC alarm can wake system from S4 */
#define ACPI_FADT_32BIT_TIMER (1<<8)
/* 08: [V1] ACPI timer width is 32-bit (0=24-bit) */
#define ACPI_FADT_DOCKING_SUPPORTED (1<<9)
/* 09: [V1] Docking supported */
#define ACPI_FADT_RESET_REGISTER (1<<10)
/* 10: [V2] System reset via the FADT RESET_REG supported */
#define ACPI_FADT_SEALED_CASE (1<<11)
/* 11: [V3] No internal expansion capabilities and case is sealed */
#define ACPI_FADT_HEADLESS (1<<12)
/* 12: [V3] No local video capabilities or local input devices */
#define ACPI_FADT_SLEEP_TYPE (1<<13)
/* 13: [V3] Must execute native instruction after writing SLP_TYPx register */
#define ACPI_FADT_PCI_EXPRESS_WAKE (1<<14)
/* 14: [V4] System supports PCIEXP_WAKE (STS/EN) bits (ACPI 3.0) */
#define ACPI_FADT_PLATFORM_CLOCK (1<<15)
/* 15: [V4] OSPM should use platform-provided timer (ACPI 3.0) */
#define ACPI_FADT_S4_RTC_VALID (1<<16)
/* 16: [V4] Contents of RTC_STS valid after S4 wake (ACPI 3.0) */
#define ACPI_FADT_REMOTE_POWER_ON (1<<17)
/* 17: [V4] System is compatible with remote power on (ACPI 3.0) */
#define ACPI_FADT_APIC_CLUSTER (1<<18)
/* 18: [V4] All local APICs must use cluster model (ACPI 3.0) */
#define ACPI_FADT_APIC_PHYSICAL (1<<19)
/* 19: [V4] All local xAPICs must use physical dest mode (ACPI 3.0) */
#define ACPI_FADT_HW_REDUCED (1<<20)
/* 20: [V5] ACPI hardware is not implemented (ACPI 5.0) */
#define ACPI_FADT_LOW_POWER_S0 (1<<21)
/* 21: [V5] S0 power savings are equal or better than S3 (ACPI 5.0) */
/* Values for preferred_profile (Preferred Power Management Profiles) */
enum acpi_preferred_pm_profiles {
PM_UNSPECIFIED = 0,
PM_DESKTOP = 1,
PM_MOBILE = 2,
PM_WORKSTATION = 3,
PM_ENTERPRISE_SERVER = 4,
PM_SOHO_SERVER = 5,
PM_APPLIANCE_PC = 6,
PM_PERFORMANCE_SERVER = 7,
PM_TABLET = 8
};
/* Values for sleep_status and sleep_control registers (V5+ FADT) */
#define ACPI_X_WAKE_STATUS 0x80
#define ACPI_X_SLEEP_TYPE_MASK 0x1C
#define ACPI_X_SLEEP_TYPE_POSITION 0x02
#define ACPI_X_SLEEP_ENABLE 0x20
/* Reset to default packing */
#pragma pack()
/*
* Internal table-related structures
*/
union acpi_name_union {
u32 integer;
char ascii[4];
};
/* Internal ACPI Table Descriptor. One per ACPI table. */
struct acpi_table_desc {
acpi_physical_address address;
struct acpi_table_header *pointer;
u32 length; /* Length fixed at 32 bits (fixed in table header) */
union acpi_name_union signature;
acpi_owner_id owner_id;
u8 flags;
u16 validation_count;
};
/*
* 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 ACPI_UINT16_MAX
/* Masks for Flags field above */
#define ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL (0)
/* Virtual address, external maintained */
#define ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL (1)
/* Physical address, internally mapped */
#define ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL (2)
/* Virtual address, internallly allocated */
#define ACPI_TABLE_ORIGIN_MASK (3)
#define ACPI_TABLE_IS_LOADED (8)
/*
* 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) (u16) ACPI_OFFSET (struct acpi_table_fadt, 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 (u32) (ACPI_FADT_OFFSET (flags) + 4)
#define ACPI_FADT_V2_SIZE (u32) (ACPI_FADT_OFFSET (minor_revision) + 1)
#define ACPI_FADT_V3_SIZE (u32) (ACPI_FADT_OFFSET (sleep_control))
#define ACPI_FADT_V5_SIZE (u32) (ACPI_FADT_OFFSET (hypervisor_id))
#define ACPI_FADT_V6_SIZE (u32) (sizeof (struct acpi_table_fadt))
#define ACPI_FADT_CONFORMANCE "ACPI 6.1 (FADT version 6)"
#endif /* __ACTBL_H__ */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Robert Moore | 653 | 67.95% | 22 | 52.38% |
| Linus Torvalds (pre-git) | 103 | 10.72% | 2 | 4.76% |
| Lv Zheng | 74 | 7.70% | 6 | 14.29% |
| Rafael J. Wysocki | 63 | 6.56% | 1 | 2.38% |
| Len Brown | 32 | 3.33% | 3 | 7.14% |
| Andy Grover | 17 | 1.77% | 4 | 9.52% |
| Graeme Gregory | 14 | 1.46% | 1 | 2.38% |
| Alexey Y. Starikovskiy | 3 | 0.31% | 1 | 2.38% |
| Linus Torvalds | 1 | 0.10% | 1 | 2.38% |
| Lucas De Marchi | 1 | 0.10% | 1 | 2.38% |
| Total | 961 | 100.00% | 42 | 100.00% |
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