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actbl.h revision 1.1.1.15.6.1
      1 /******************************************************************************
      2  *
      3  * Name: actbl.h - Basic ACPI Table Definitions
      4  *
      5  *****************************************************************************/
      6 
      7 /*
      8  * Copyright (C) 2000 - 2021, Intel Corp.
      9  * All rights reserved.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions, and the following disclaimer,
     16  *    without modification.
     17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
     18  *    substantially similar to the "NO WARRANTY" disclaimer below
     19  *    ("Disclaimer") and any redistribution must be conditioned upon
     20  *    including a substantially similar Disclaimer requirement for further
     21  *    binary redistribution.
     22  * 3. Neither the names of the above-listed copyright holders nor the names
     23  *    of any contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * Alternatively, this software may be distributed under the terms of the
     27  * GNU General Public License ("GPL") version 2 as published by the Free
     28  * Software Foundation.
     29  *
     30  * NO WARRANTY
     31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     41  * POSSIBILITY OF SUCH DAMAGES.
     42  */
     43 
     44 #ifndef __ACTBL_H__
     45 #define __ACTBL_H__
     46 
     47 
     48 /*******************************************************************************
     49  *
     50  * Fundamental ACPI tables
     51  *
     52  * This file contains definitions for the ACPI tables that are directly consumed
     53  * by ACPICA. All other tables are consumed by the OS-dependent ACPI-related
     54  * device drivers and other OS support code.
     55  *
     56  * The RSDP and FACS do not use the common ACPI table header. All other ACPI
     57  * tables use the header.
     58  *
     59  ******************************************************************************/
     60 
     61 
     62 /*
     63  * Values for description table header signatures for tables defined in this
     64  * file. Useful because they make it more difficult to inadvertently type in
     65  * the wrong signature.
     66  */
     67 #define ACPI_SIG_DSDT           "DSDT"      /* Differentiated System Description Table */
     68 #define ACPI_SIG_FADT           "FACP"      /* Fixed ACPI Description Table */
     69 #define ACPI_SIG_FACS           "FACS"      /* Firmware ACPI Control Structure */
     70 #define ACPI_SIG_OSDT           "OSDT"      /* Override System Description Table */
     71 #define ACPI_SIG_PSDT           "PSDT"      /* Persistent System Description Table */
     72 #define ACPI_SIG_RSDP           "RSD PTR "  /* Root System Description Pointer */
     73 #define ACPI_SIG_RSDT           "RSDT"      /* Root System Description Table */
     74 #define ACPI_SIG_XSDT           "XSDT"      /* Extended  System Description Table */
     75 #define ACPI_SIG_SSDT           "SSDT"      /* Secondary System Description Table */
     76 #define ACPI_RSDP_NAME          "RSDP"      /* Short name for RSDP, not signature */
     77 #define ACPI_OEM_NAME           "OEM"       /* Short name for OEM, not signature */
     78 
     79 
     80 /*
     81  * All tables and structures must be byte-packed to match the ACPI
     82  * specification, since the tables are provided by the system BIOS
     83  */
     84 #pragma pack(1)
     85 
     86 /*
     87  * Note: C bitfields are not used for this reason:
     88  *
     89  * "Bitfields are great and easy to read, but unfortunately the C language
     90  * does not specify the layout of bitfields in memory, which means they are
     91  * essentially useless for dealing with packed data in on-disk formats or
     92  * binary wire protocols." (Or ACPI tables and buffers.) "If you ask me,
     93  * this decision was a design error in C. Ritchie could have picked an order
     94  * and stuck with it." Norman Ramsey.
     95  * See http://stackoverflow.com/a/1053662/41661
     96  */
     97 
     98 
     99 /*******************************************************************************
    100  *
    101  * Master ACPI Table Header. This common header is used by all ACPI tables
    102  * except the RSDP and FACS.
    103  *
    104  ******************************************************************************/
    105 
    106 typedef struct acpi_table_header
    107 {
    108     char                    Signature[ACPI_NAMESEG_SIZE];       /* ASCII table signature */
    109     UINT32                  Length;                             /* Length of table in bytes, including this header */
    110     UINT8                   Revision;                           /* ACPI Specification minor version number */
    111     UINT8                   Checksum;                           /* To make sum of entire table == 0 */
    112     char                    OemId[ACPI_OEM_ID_SIZE];            /* ASCII OEM identification */
    113     char                    OemTableId[ACPI_OEM_TABLE_ID_SIZE]; /* ASCII OEM table identification */
    114     UINT32                  OemRevision;                        /* OEM revision number */
    115     char                    AslCompilerId[ACPI_NAMESEG_SIZE];   /* ASCII ASL compiler vendor ID */
    116     UINT32                  AslCompilerRevision;                /* ASL compiler version */
    117 
    118 } ACPI_TABLE_HEADER;
    119 
    120 
    121 /*******************************************************************************
    122  *
    123  * GAS - Generic Address Structure (ACPI 2.0+)
    124  *
    125  * Note: Since this structure is used in the ACPI tables, it is byte aligned.
    126  * If misaligned access is not supported by the hardware, accesses to the
    127  * 64-bit Address field must be performed with care.
    128  *
    129  ******************************************************************************/
    130 
    131 typedef struct acpi_generic_address
    132 {
    133     UINT8                   SpaceId;                /* Address space where struct or register exists */
    134     UINT8                   BitWidth;               /* Size in bits of given register */
    135     UINT8                   BitOffset;              /* Bit offset within the register */
    136     UINT8                   AccessWidth;            /* Minimum Access size (ACPI 3.0) */
    137     UINT64                  Address;                /* 64-bit address of struct or register */
    138 
    139 } ACPI_GENERIC_ADDRESS;
    140 
    141 
    142 /*******************************************************************************
    143  *
    144  * RSDP - Root System Description Pointer (Signature is "RSD PTR ")
    145  *        Version 2
    146  *
    147  ******************************************************************************/
    148 
    149 typedef struct acpi_table_rsdp
    150 {
    151     char                    Signature[8];               /* ACPI signature, contains "RSD PTR " */
    152     UINT8                   Checksum;                   /* ACPI 1.0 checksum */
    153     char                    OemId[ACPI_OEM_ID_SIZE];    /* OEM identification */
    154     UINT8                   Revision;                   /* Must be (0) for ACPI 1.0 or (2) for ACPI 2.0+ */
    155     UINT32                  RsdtPhysicalAddress;        /* 32-bit physical address of the RSDT */
    156     UINT32                  Length;                     /* Table length in bytes, including header (ACPI 2.0+) */
    157     UINT64                  XsdtPhysicalAddress;        /* 64-bit physical address of the XSDT (ACPI 2.0+) */
    158     UINT8                   ExtendedChecksum;           /* Checksum of entire table (ACPI 2.0+) */
    159     UINT8                   Reserved[3];                /* Reserved, must be zero */
    160 
    161 } ACPI_TABLE_RSDP;
    162 
    163 /* Standalone struct for the ACPI 1.0 RSDP */
    164 
    165 typedef struct acpi_rsdp_common
    166 {
    167     char                    Signature[8];
    168     UINT8                   Checksum;
    169     char                    OemId[ACPI_OEM_ID_SIZE];
    170     UINT8                   Revision;
    171     UINT32                  RsdtPhysicalAddress;
    172 
    173 } ACPI_RSDP_COMMON;
    174 
    175 /* Standalone struct for the extended part of the RSDP (ACPI 2.0+) */
    176 
    177 typedef struct acpi_rsdp_extension
    178 {
    179     UINT32                  Length;
    180     UINT64                  XsdtPhysicalAddress;
    181     UINT8                   ExtendedChecksum;
    182     UINT8                   Reserved[3];
    183 
    184 } ACPI_RSDP_EXTENSION;
    185 
    186 
    187 /*******************************************************************************
    188  *
    189  * RSDT/XSDT - Root System Description Tables
    190  *             Version 1 (both)
    191  *
    192  ******************************************************************************/
    193 
    194 typedef struct acpi_table_rsdt
    195 {
    196     ACPI_TABLE_HEADER       Header;                 /* Common ACPI table header */
    197     UINT32                  TableOffsetEntry[1];    /* Array of pointers to ACPI tables */
    198 
    199 } ACPI_TABLE_RSDT;
    200 
    201 typedef struct acpi_table_xsdt
    202 {
    203     ACPI_TABLE_HEADER       Header;                 /* Common ACPI table header */
    204     UINT64                  TableOffsetEntry[1];    /* Array of pointers to ACPI tables */
    205 
    206 } ACPI_TABLE_XSDT;
    207 
    208 #define ACPI_RSDT_ENTRY_SIZE        (sizeof (UINT32))
    209 #define ACPI_XSDT_ENTRY_SIZE        (sizeof (UINT64))
    210 
    211 
    212 /*******************************************************************************
    213  *
    214  * FACS - Firmware ACPI Control Structure (FACS)
    215  *
    216  ******************************************************************************/
    217 
    218 typedef struct acpi_table_facs
    219 {
    220     char                    Signature[4];           /* ASCII table signature */
    221     UINT32                  Length;                 /* Length of structure, in bytes */
    222     UINT32                  HardwareSignature;      /* Hardware configuration signature */
    223     UINT32                  FirmwareWakingVector;   /* 32-bit physical address of the Firmware Waking Vector */
    224     UINT32                  GlobalLock;             /* Global Lock for shared hardware resources */
    225     UINT32                  Flags;
    226     UINT64                  XFirmwareWakingVector;  /* 64-bit version of the Firmware Waking Vector (ACPI 2.0+) */
    227     UINT8                   Version;                /* Version of this table (ACPI 2.0+) */
    228     UINT8                   Reserved[3];            /* Reserved, must be zero */
    229     UINT32                  OspmFlags;              /* Flags to be set by OSPM (ACPI 4.0) */
    230     UINT8                   Reserved1[24];          /* Reserved, must be zero */
    231 
    232 } ACPI_TABLE_FACS;
    233 
    234 /* Masks for GlobalLock flag field above */
    235 
    236 #define ACPI_GLOCK_PENDING          (1)             /* 00: Pending global lock ownership */
    237 #define ACPI_GLOCK_OWNED            (1<<1)          /* 01: Global lock is owned */
    238 
    239 /* Masks for Flags field above  */
    240 
    241 #define ACPI_FACS_S4_BIOS_PRESENT   (1)             /* 00: S4BIOS support is present */
    242 #define ACPI_FACS_64BIT_WAKE        (1<<1)          /* 01: 64-bit wake vector supported (ACPI 4.0) */
    243 
    244 /* Masks for OspmFlags field above */
    245 
    246 #define ACPI_FACS_64BIT_ENVIRONMENT (1)             /* 00: 64-bit wake environment is required (ACPI 4.0) */
    247 
    248 
    249 /*******************************************************************************
    250  *
    251  * FADT - Fixed ACPI Description Table (Signature "FACP")
    252  *        Version 6
    253  *
    254  ******************************************************************************/
    255 
    256 /* Fields common to all versions of the FADT */
    257 
    258 typedef struct acpi_table_fadt
    259 {
    260     ACPI_TABLE_HEADER       Header;             /* Common ACPI table header */
    261     UINT32                  Facs;               /* 32-bit physical address of FACS */
    262     UINT32                  Dsdt;               /* 32-bit physical address of DSDT */
    263     UINT8                   Model;              /* System Interrupt Model (ACPI 1.0) - not used in ACPI 2.0+ */
    264     UINT8                   PreferredProfile;   /* Conveys preferred power management profile to OSPM. */
    265     UINT16                  SciInterrupt;       /* System vector of SCI interrupt */
    266     UINT32                  SmiCommand;         /* 32-bit Port address of SMI command port */
    267     UINT8                   AcpiEnable;         /* Value to write to SMI_CMD to enable ACPI */
    268     UINT8                   AcpiDisable;        /* Value to write to SMI_CMD to disable ACPI */
    269     UINT8                   S4BiosRequest;      /* Value to write to SMI_CMD to enter S4BIOS state */
    270     UINT8                   PstateControl;      /* Processor performance state control*/
    271     UINT32                  Pm1aEventBlock;     /* 32-bit port address of Power Mgt 1a Event Reg Blk */
    272     UINT32                  Pm1bEventBlock;     /* 32-bit port address of Power Mgt 1b Event Reg Blk */
    273     UINT32                  Pm1aControlBlock;   /* 32-bit port address of Power Mgt 1a Control Reg Blk */
    274     UINT32                  Pm1bControlBlock;   /* 32-bit port address of Power Mgt 1b Control Reg Blk */
    275     UINT32                  Pm2ControlBlock;    /* 32-bit port address of Power Mgt 2 Control Reg Blk */
    276     UINT32                  PmTimerBlock;       /* 32-bit port address of Power Mgt Timer Ctrl Reg Blk */
    277     UINT32                  Gpe0Block;          /* 32-bit port address of General Purpose Event 0 Reg Blk */
    278     UINT32                  Gpe1Block;          /* 32-bit port address of General Purpose Event 1 Reg Blk */
    279     UINT8                   Pm1EventLength;     /* Byte Length of ports at Pm1xEventBlock */
    280     UINT8                   Pm1ControlLength;   /* Byte Length of ports at Pm1xControlBlock */
    281     UINT8                   Pm2ControlLength;   /* Byte Length of ports at Pm2ControlBlock */
    282     UINT8                   PmTimerLength;      /* Byte Length of ports at PmTimerBlock */
    283     UINT8                   Gpe0BlockLength;    /* Byte Length of ports at Gpe0Block */
    284     UINT8                   Gpe1BlockLength;    /* Byte Length of ports at Gpe1Block */
    285     UINT8                   Gpe1Base;           /* Offset in GPE number space where GPE1 events start */
    286     UINT8                   CstControl;         /* Support for the _CST object and C-States change notification */
    287     UINT16                  C2Latency;          /* Worst case HW latency to enter/exit C2 state */
    288     UINT16                  C3Latency;          /* Worst case HW latency to enter/exit C3 state */
    289     UINT16                  FlushSize;          /* Processor memory cache line width, in bytes */
    290     UINT16                  FlushStride;        /* Number of flush strides that need to be read */
    291     UINT8                   DutyOffset;         /* Processor duty cycle index in processor P_CNT reg */
    292     UINT8                   DutyWidth;          /* Processor duty cycle value bit width in P_CNT register */
    293     UINT8                   DayAlarm;           /* Index to day-of-month alarm in RTC CMOS RAM */
    294     UINT8                   MonthAlarm;         /* Index to month-of-year alarm in RTC CMOS RAM */
    295     UINT8                   Century;            /* Index to century in RTC CMOS RAM */
    296     UINT16                  BootFlags;          /* IA-PC Boot Architecture Flags (see below for individual flags) */
    297     UINT8                   Reserved;           /* Reserved, must be zero */
    298     UINT32                  Flags;              /* Miscellaneous flag bits (see below for individual flags) */
    299     ACPI_GENERIC_ADDRESS    ResetRegister;      /* 64-bit address of the Reset register */
    300     UINT8                   ResetValue;         /* Value to write to the ResetRegister port to reset the system */
    301     UINT16                  ArmBootFlags;       /* ARM-Specific Boot Flags (see below for individual flags) (ACPI 5.1) */
    302     UINT8                   MinorRevision;      /* FADT Minor Revision (ACPI 5.1) */
    303     UINT64                  XFacs;              /* 64-bit physical address of FACS */
    304     UINT64                  XDsdt;              /* 64-bit physical address of DSDT */
    305     ACPI_GENERIC_ADDRESS    XPm1aEventBlock;    /* 64-bit Extended Power Mgt 1a Event Reg Blk address */
    306     ACPI_GENERIC_ADDRESS    XPm1bEventBlock;    /* 64-bit Extended Power Mgt 1b Event Reg Blk address */
    307     ACPI_GENERIC_ADDRESS    XPm1aControlBlock;  /* 64-bit Extended Power Mgt 1a Control Reg Blk address */
    308     ACPI_GENERIC_ADDRESS    XPm1bControlBlock;  /* 64-bit Extended Power Mgt 1b Control Reg Blk address */
    309     ACPI_GENERIC_ADDRESS    XPm2ControlBlock;   /* 64-bit Extended Power Mgt 2 Control Reg Blk address */
    310     ACPI_GENERIC_ADDRESS    XPmTimerBlock;      /* 64-bit Extended Power Mgt Timer Ctrl Reg Blk address */
    311     ACPI_GENERIC_ADDRESS    XGpe0Block;         /* 64-bit Extended General Purpose Event 0 Reg Blk address */
    312     ACPI_GENERIC_ADDRESS    XGpe1Block;         /* 64-bit Extended General Purpose Event 1 Reg Blk address */
    313     ACPI_GENERIC_ADDRESS    SleepControl;       /* 64-bit Sleep Control register (ACPI 5.0) */
    314     ACPI_GENERIC_ADDRESS    SleepStatus;        /* 64-bit Sleep Status register (ACPI 5.0) */
    315     UINT64                  HypervisorId;       /* Hypervisor Vendor ID (ACPI 6.0) */
    316 
    317 } ACPI_TABLE_FADT;
    318 
    319 
    320 /* Masks for FADT IA-PC Boot Architecture Flags (boot_flags) [Vx]=Introduced in this FADT revision */
    321 
    322 #define ACPI_FADT_LEGACY_DEVICES    (1)         /* 00: [V2] System has LPC or ISA bus devices */
    323 #define ACPI_FADT_8042              (1<<1)      /* 01: [V3] System has an 8042 controller on port 60/64 */
    324 #define ACPI_FADT_NO_VGA            (1<<2)      /* 02: [V4] It is not safe to probe for VGA hardware */
    325 #define ACPI_FADT_NO_MSI            (1<<3)      /* 03: [V4] Message Signaled Interrupts (MSI) must not be enabled */
    326 #define ACPI_FADT_NO_ASPM           (1<<4)      /* 04: [V4] PCIe ASPM control must not be enabled */
    327 #define ACPI_FADT_NO_CMOS_RTC       (1<<5)      /* 05: [V5] No CMOS real-time clock present */
    328 
    329 /* Masks for FADT ARM Boot Architecture Flags (arm_boot_flags) ACPI 5.1 */
    330 
    331 #define ACPI_FADT_PSCI_COMPLIANT    (1)         /* 00: [V5+] PSCI 0.2+ is implemented */
    332 #define ACPI_FADT_PSCI_USE_HVC      (1<<1)      /* 01: [V5+] HVC must be used instead of SMC as the PSCI conduit */
    333 
    334 /* Masks for FADT flags */
    335 
    336 #define ACPI_FADT_WBINVD            (1)         /* 00: [V1] The WBINVD instruction works properly */
    337 #define ACPI_FADT_WBINVD_FLUSH      (1<<1)      /* 01: [V1] WBINVD flushes but does not invalidate caches */
    338 #define ACPI_FADT_C1_SUPPORTED      (1<<2)      /* 02: [V1] All processors support C1 state */
    339 #define ACPI_FADT_C2_MP_SUPPORTED   (1<<3)      /* 03: [V1] C2 state works on MP system */
    340 #define ACPI_FADT_POWER_BUTTON      (1<<4)      /* 04: [V1] Power button is handled as a control method device */
    341 #define ACPI_FADT_SLEEP_BUTTON      (1<<5)      /* 05: [V1] Sleep button is handled as a control method device */
    342 #define ACPI_FADT_FIXED_RTC         (1<<6)      /* 06: [V1] RTC wakeup status is not in fixed register space */
    343 #define ACPI_FADT_S4_RTC_WAKE       (1<<7)      /* 07: [V1] RTC alarm can wake system from S4 */
    344 #define ACPI_FADT_32BIT_TIMER       (1<<8)      /* 08: [V1] ACPI timer width is 32-bit (0=24-bit) */
    345 #define ACPI_FADT_DOCKING_SUPPORTED (1<<9)      /* 09: [V1] Docking supported */
    346 #define ACPI_FADT_RESET_REGISTER    (1<<10)     /* 10: [V2] System reset via the FADT RESET_REG supported */
    347 #define ACPI_FADT_SEALED_CASE       (1<<11)     /* 11: [V3] No internal expansion capabilities and case is sealed */
    348 #define ACPI_FADT_HEADLESS          (1<<12)     /* 12: [V3] No local video capabilities or local input devices */
    349 #define ACPI_FADT_SLEEP_TYPE        (1<<13)     /* 13: [V3] Must execute native instruction after writing  SLP_TYPx register */
    350 #define ACPI_FADT_PCI_EXPRESS_WAKE  (1<<14)     /* 14: [V4] System supports PCIEXP_WAKE (STS/EN) bits (ACPI 3.0) */
    351 #define ACPI_FADT_PLATFORM_CLOCK    (1<<15)     /* 15: [V4] OSPM should use platform-provided timer (ACPI 3.0) */
    352 #define ACPI_FADT_S4_RTC_VALID      (1<<16)     /* 16: [V4] Contents of RTC_STS valid after S4 wake (ACPI 3.0) */
    353 #define ACPI_FADT_REMOTE_POWER_ON   (1<<17)     /* 17: [V4] System is compatible with remote power on (ACPI 3.0) */
    354 #define ACPI_FADT_APIC_CLUSTER      (1<<18)     /* 18: [V4] All local APICs must use cluster model (ACPI 3.0) */
    355 #define ACPI_FADT_APIC_PHYSICAL     (1<<19)     /* 19: [V4] All local xAPICs must use physical dest mode (ACPI 3.0) */
    356 #define ACPI_FADT_HW_REDUCED        (1<<20)     /* 20: [V5] ACPI hardware is not implemented (ACPI 5.0) */
    357 #define ACPI_FADT_LOW_POWER_S0      (1<<21)     /* 21: [V5] S0 power savings are equal or better than S3 (ACPI 5.0) */
    358 
    359 
    360 /* Values for PreferredProfile (Preferred Power Management Profiles) */
    361 
    362 enum AcpiPreferredPmProfiles
    363 {
    364     PM_UNSPECIFIED          = 0,
    365     PM_DESKTOP              = 1,
    366     PM_MOBILE               = 2,
    367     PM_WORKSTATION          = 3,
    368     PM_ENTERPRISE_SERVER    = 4,
    369     PM_SOHO_SERVER          = 5,
    370     PM_APPLIANCE_PC         = 6,
    371     PM_PERFORMANCE_SERVER   = 7,
    372     PM_TABLET               = 8
    373 };
    374 
    375 /* Values for SleepStatus and SleepControl registers (V5+ FADT) */
    376 
    377 #define ACPI_X_WAKE_STATUS          0x80
    378 #define ACPI_X_SLEEP_TYPE_MASK      0x1C
    379 #define ACPI_X_SLEEP_TYPE_POSITION  0x02
    380 #define ACPI_X_SLEEP_ENABLE         0x20
    381 
    382 
    383 /* Reset to default packing */
    384 
    385 #pragma pack()
    386 
    387 
    388 /*
    389  * Internal table-related structures
    390  */
    391 typedef union acpi_name_union
    392 {
    393     UINT32                          Integer;
    394     char                            Ascii[4];
    395 
    396 } ACPI_NAME_UNION;
    397 
    398 
    399 /* Internal ACPI Table Descriptor. One per ACPI table. */
    400 
    401 typedef struct acpi_table_desc
    402 {
    403     ACPI_PHYSICAL_ADDRESS           Address;
    404     ACPI_TABLE_HEADER               *Pointer;
    405     UINT32                          Length;     /* Length fixed at 32 bits (fixed in table header) */
    406     ACPI_NAME_UNION                 Signature;
    407     ACPI_OWNER_ID                   OwnerId;
    408     UINT8                           Flags;
    409     UINT16                          ValidationCount;
    410 
    411 } ACPI_TABLE_DESC;
    412 
    413 /*
    414  * Maximum value of the ValidationCount field in ACPI_TABLE_DESC.
    415  * When reached, ValidationCount cannot be changed any more and the table will
    416  * be permanently regarded as validated.
    417  *
    418  * This is to prevent situations in which unbalanced table get/put operations
    419  * may cause premature table unmapping in the OS to happen.
    420  *
    421  * The maximum validation count can be defined to any value, but should be
    422  * greater than the maximum number of OS early stage mapping slots to avoid
    423  * leaking early stage table mappings to the late stage.
    424  */
    425 #define ACPI_MAX_TABLE_VALIDATIONS          ACPI_UINT16_MAX
    426 
    427 /* Masks for Flags field above */
    428 
    429 #define ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL  (0) /* Virtual address, external maintained */
    430 #define ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL (1) /* Physical address, internally mapped */
    431 #define ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL  (2) /* Virtual address, internallly allocated */
    432 #define ACPI_TABLE_ORIGIN_MASK              (3)
    433 #define ACPI_TABLE_IS_VERIFIED              (4)
    434 #define ACPI_TABLE_IS_LOADED                (8)
    435 
    436 
    437 /*
    438  * Get the remaining ACPI tables
    439  */
    440 #include "actbl1.h"
    441 #include "actbl2.h"
    442 #include "actbl3.h"
    443 
    444 /* Macros used to generate offsets to specific table fields */
    445 
    446 #define ACPI_FADT_OFFSET(f)             (UINT16) ACPI_OFFSET (ACPI_TABLE_FADT, f)
    447 
    448 /*
    449  * Sizes of the various flavors of FADT. We need to look closely
    450  * at the FADT length because the version number essentially tells
    451  * us nothing because of many BIOS bugs where the version does not
    452  * match the expected length. In other words, the length of the
    453  * FADT is the bottom line as to what the version really is.
    454  *
    455  * For reference, the values below are as follows:
    456  *     FADT V1 size: 0x074
    457  *     FADT V2 size: 0x084
    458  *     FADT V3 size: 0x0F4
    459  *     FADT V4 size: 0x0F4
    460  *     FADT V5 size: 0x10C
    461  *     FADT V6 size: 0x114
    462  */
    463 #define ACPI_FADT_V1_SIZE       (UINT32) (ACPI_FADT_OFFSET (Flags) + 4)
    464 #define ACPI_FADT_V2_SIZE       (UINT32) (ACPI_FADT_OFFSET (MinorRevision) + 1)
    465 #define ACPI_FADT_V3_SIZE       (UINT32) (ACPI_FADT_OFFSET (SleepControl))
    466 #define ACPI_FADT_V5_SIZE       (UINT32) (ACPI_FADT_OFFSET (HypervisorId))
    467 #define ACPI_FADT_V6_SIZE       (UINT32) (sizeof (ACPI_TABLE_FADT))
    468 
    469 #define ACPI_FADT_CONFORMANCE   "ACPI 6.1 (FADT version 6)"
    470 
    471 #endif /* __ACTBL_H__ */
    472