include/acpi/actbl.h

   1 /******************************************************************************
   2  *
   3  * Name: actbl.h - Basic ACPI Table Definitions
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2011, 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 MERCHANTIBILITY 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  * Fundamental ACPI tables
  50  *
  51  * This file contains definitions for the ACPI tables that are directly consumed
  52  * by ACPICA. All other tables are consumed by the OS-dependent ACPI-related
  53  * device drivers and other OS support code.
  54  *
  55  * The RSDP and FACS do not use the common ACPI table header. All other ACPI
  56  * tables use the header.
  57  *
  58  ******************************************************************************/
  59
  60 /*
  61  * Values for description table header signatures for tables defined in this
  62  * file. Useful because they make it more difficult to inadvertently type in
  63  * the wrong signature.
  64  */
  65 #define ACPI_SIG_DSDT           "DSDT"  /* Differentiated System Description Table */
  66 #define ACPI_SIG_FADT           "FACP"  /* Fixed ACPI Description Table */
  67 #define ACPI_SIG_FACS           "FACS"  /* Firmware ACPI Control Structure */
  68 #define ACPI_SIG_PSDT           "PSDT"  /* Persistent System Description Table */
  69 #define ACPI_SIG_RSDP           "RSD PTR "      /* Root System Description Pointer */
  70 #define ACPI_SIG_RSDT           "RSDT"  /* Root System Description Table */
  71 #define ACPI_SIG_XSDT           "XSDT"  /* Extended  System Description Table */
  72 #define ACPI_SIG_SSDT           "SSDT"  /* Secondary System Description Table */
  73 #define ACPI_RSDP_NAME          "RSDP"  /* Short name for RSDP, not signature */
  74
  75 /*
  76  * All tables and structures must be byte-packed to match the ACPI
  77  * specification, since the tables are provided by the system BIOS
  78  */
  79 #pragma pack(1)
  80
  81 /*
  82  * Note about bitfields: The u8 type is used for bitfields in ACPI tables.
  83  * This is the only type that is even remotely portable. Anything else is not
  84  * portable, so do not use any other bitfield types.
  85  */
  86
  87 /*******************************************************************************
  88  *
  89  * Master ACPI Table Header. This common header is used by all ACPI tables
  90  * except the RSDP and FACS.
  91  *
  92  ******************************************************************************/
  93
  94 struct acpi_table_header {
  95         char signature[ACPI_NAME_SIZE]; /* ASCII table signature */
  96         u32 length;             /* Length of table in bytes, including this header */
  97         u8 revision;            /* ACPI Specification minor version # */
  98         u8 checksum;            /* To make sum of entire table == 0 */
  99         char oem_id[ACPI_OEM_ID_SIZE];  /* ASCII OEM identification */
 100         char oem_table_id[ACPI_OEM_TABLE_ID_SIZE];      /* ASCII OEM table identification */
 101         u32 oem_revision;       /* OEM revision number */
 102         char asl_compiler_id[ACPI_NAME_SIZE];   /* ASCII ASL compiler vendor ID */
 103         u32 asl_compiler_revision;      /* ASL compiler version */
 104 };
 105
 106 /*******************************************************************************
 107  *
 108  * GAS - Generic Address Structure (ACPI 2.0+)
 109  *
 110  * Note: Since this structure is used in the ACPI tables, it is byte aligned.
 111  * If misaliged access is not supported by the hardware, accesses to the
 112  * 64-bit Address field must be performed with care.
 113  *
 114  ******************************************************************************/
 115
 116 struct acpi_generic_address {
 117         u8 space_id;            /* Address space where struct or register exists */
 118         u8 bit_width;           /* Size in bits of given register */
 119         u8 bit_offset;          /* Bit offset within the register */
 120         u8 access_width;        /* Minimum Access size (ACPI 3.0) */
 121         u64 address;            /* 64-bit address of struct or register */
 122 };
 123
 124 /*******************************************************************************
 125  *
 126  * RSDP - Root System Description Pointer (Signature is "RSD PTR ")
 127  *        Version 2
 128  *
 129  ******************************************************************************/
 130
 131 struct acpi_table_rsdp {
 132         char signature[8];      /* ACPI signature, contains "RSD PTR " */
 133         u8 checksum;            /* ACPI 1.0 checksum */
 134         char oem_id[ACPI_OEM_ID_SIZE];  /* OEM identification */
 135         u8 revision;            /* Must be (0) for ACPI 1.0 or (2) for ACPI 2.0+ */
 136         u32 rsdt_physical_address;      /* 32-bit physical address of the RSDT */
 137         u32 length;             /* Table length in bytes, including header (ACPI 2.0+) */
 138         u64 xsdt_physical_address;      /* 64-bit physical address of the XSDT (ACPI 2.0+) */
 139         u8 extended_checksum;   /* Checksum of entire table (ACPI 2.0+) */
 140         u8 reserved[3];         /* Reserved, must be zero */
 141 };
 142
 143 #define ACPI_RSDP_REV0_SIZE     20      /* Size of original ACPI 1.0 RSDP */
 144
 145 /*******************************************************************************
 146  *
 147  * RSDT/XSDT - Root System Description Tables
 148  *             Version 1 (both)
 149  *
 150  ******************************************************************************/
 151
 152 struct acpi_table_rsdt {
 153         struct acpi_table_header header;        /* Common ACPI table header */
 154         u32 table_offset_entry[1];      /* Array of pointers to ACPI tables */
 155 };
 156
 157 struct acpi_table_xsdt {
 158         struct acpi_table_header header;        /* Common ACPI table header */
 159         u64 table_offset_entry[1];      /* Array of pointers to ACPI tables */
 160 };
 161
 162 /*******************************************************************************
 163  *
 164  * FACS - Firmware ACPI Control Structure (FACS)
 165  *
 166  ******************************************************************************/
 167
 168 struct acpi_table_facs {
 169         char signature[4];      /* ASCII table signature */
 170         u32 length;             /* Length of structure, in bytes */
 171         u32 hardware_signature; /* Hardware configuration signature */
 172         u32 firmware_waking_vector;     /* 32-bit physical address of the Firmware Waking Vector */
 173         u32 global_lock;        /* Global Lock for shared hardware resources */
 174         u32 flags;
 175         u64 xfirmware_waking_vector;    /* 64-bit version of the Firmware Waking Vector (ACPI 2.0+) */
 176         u8 version;             /* Version of this table (ACPI 2.0+) */
 177         u8 reserved[3];         /* Reserved, must be zero */
 178         u32 ospm_flags;         /* Flags to be set by OSPM (ACPI 4.0) */
 179         u8 reserved1[24];       /* Reserved, must be zero */
 180 };
 181
 182 /* Masks for global_lock flag field above */
 183
 184 #define ACPI_GLOCK_PENDING          (1) /* 00: Pending global lock ownership */
 185 #define ACPI_GLOCK_OWNED            (1<<1)      /* 01: Global lock is owned */
 186
 187 /* Masks for Flags field above  */
 188
 189 #define ACPI_FACS_S4_BIOS_PRESENT   (1) /* 00: S4BIOS support is present */
 190 #define ACPI_FACS_64BIT_WAKE        (1<<1)      /* 01: 64-bit wake vector supported (ACPI 4.0) */
 191
 192 /* Masks for ospm_flags field above */
 193
 194 #define ACPI_FACS_64BIT_ENVIRONMENT (1) /* 00: 64-bit wake environment is required (ACPI 4.0) */
 195
 196 /*******************************************************************************
 197  *
 198  * FADT - Fixed ACPI Description Table (Signature "FACP")
 199  *        Version 4
 200  *
 201  ******************************************************************************/
 202
 203 /* Fields common to all versions of the FADT */
 204
 205 struct acpi_table_fadt {
 206         struct acpi_table_header header;        /* Common ACPI table header */
 207         u32 facs;               /* 32-bit physical address of FACS */
 208         u32 dsdt;               /* 32-bit physical address of DSDT */
 209         u8 model;               /* System Interrupt Model (ACPI 1.0) - not used in ACPI 2.0+ */
 210         u8 preferred_profile;   /* Conveys preferred power management profile to OSPM. */
 211         u16 sci_interrupt;      /* System vector of SCI interrupt */
 212         u32 smi_command;        /* 32-bit Port address of SMI command port */
 213         u8 acpi_enable;         /* Value to write to smi_cmd to enable ACPI */
 214         u8 acpi_disable;        /* Value to write to smi_cmd to disable ACPI */
 215         u8 S4bios_request;      /* Value to write to SMI CMD to enter S4BIOS state */
 216         u8 pstate_control;      /* Processor performance state control */
 217         u32 pm1a_event_block;   /* 32-bit Port address of Power Mgt 1a Event Reg Blk */
 218         u32 pm1b_event_block;   /* 32-bit Port address of Power Mgt 1b Event Reg Blk */
 219         u32 pm1a_control_block; /* 32-bit Port address of Power Mgt 1a Control Reg Blk */
 220         u32 pm1b_control_block; /* 32-bit Port address of Power Mgt 1b Control Reg Blk */
 221         u32 pm2_control_block;  /* 32-bit Port address of Power Mgt 2 Control Reg Blk */
 222         u32 pm_timer_block;     /* 32-bit Port address of Power Mgt Timer Ctrl Reg Blk */
 223         u32 gpe0_block;         /* 32-bit Port address of General Purpose Event 0 Reg Blk */
 224         u32 gpe1_block;         /* 32-bit Port address of General Purpose Event 1 Reg Blk */
 225         u8 pm1_event_length;    /* Byte Length of ports at pm1x_event_block */
 226         u8 pm1_control_length;  /* Byte Length of ports at pm1x_control_block */
 227         u8 pm2_control_length;  /* Byte Length of ports at pm2_control_block */
 228         u8 pm_timer_length;     /* Byte Length of ports at pm_timer_block */
 229         u8 gpe0_block_length;   /* Byte Length of ports at gpe0_block */
 230         u8 gpe1_block_length;   /* Byte Length of ports at gpe1_block */
 231         u8 gpe1_base;           /* Offset in GPE number space where GPE1 events start */
 232         u8 cst_control;         /* Support for the _CST object and C States change notification */
 233         u16 C2latency;          /* Worst case HW latency to enter/exit C2 state */
 234         u16 C3latency;          /* Worst case HW latency to enter/exit C3 state */
 235         u16 flush_size;         /* Processor's memory cache line width, in bytes */
 236         u16 flush_stride;       /* Number of flush strides that need to be read */
 237         u8 duty_offset;         /* Processor duty cycle index in processor's P_CNT reg */
 238         u8 duty_width;          /* Processor duty cycle value bit width in P_CNT register */
 239         u8 day_alarm;           /* Index to day-of-month alarm in RTC CMOS RAM */
 240         u8 month_alarm;         /* Index to month-of-year alarm in RTC CMOS RAM */
 241         u8 century;             /* Index to century in RTC CMOS RAM */
 242         u16 boot_flags;         /* IA-PC Boot Architecture Flags (see below for individual flags) */
 243         u8 reserved;            /* Reserved, must be zero */
 244         u32 flags;              /* Miscellaneous flag bits (see below for individual flags) */
 245         struct acpi_generic_address reset_register;     /* 64-bit address of the Reset register */
 246         u8 reset_value;         /* Value to write to the reset_register port to reset the system */
 247         u8 reserved4[3];        /* Reserved, must be zero */
 248         u64 Xfacs;              /* 64-bit physical address of FACS */
 249         u64 Xdsdt;              /* 64-bit physical address of DSDT */
 250         struct acpi_generic_address xpm1a_event_block;  /* 64-bit Extended Power Mgt 1a Event Reg Blk address */
 251         struct acpi_generic_address xpm1b_event_block;  /* 64-bit Extended Power Mgt 1b Event Reg Blk address */
 252         struct acpi_generic_address xpm1a_control_block;        /* 64-bit Extended Power Mgt 1a Control Reg Blk address */
 253         struct acpi_generic_address xpm1b_control_block;        /* 64-bit Extended Power Mgt 1b Control Reg Blk address */
 254         struct acpi_generic_address xpm2_control_block; /* 64-bit Extended Power Mgt 2 Control Reg Blk address */
 255         struct acpi_generic_address xpm_timer_block;    /* 64-bit Extended Power Mgt Timer Ctrl Reg Blk address */
 256         struct acpi_generic_address xgpe0_block;        /* 64-bit Extended General Purpose Event 0 Reg Blk address */
 257         struct acpi_generic_address xgpe1_block;        /* 64-bit Extended General Purpose Event 1 Reg Blk address */
 258 };
 259
 260 /* Masks for FADT Boot Architecture Flags (boot_flags) */
 261
 262 #define ACPI_FADT_LEGACY_DEVICES    (1)         /* 00: [V2] System has LPC or ISA bus devices */
 263 #define ACPI_FADT_8042              (1<<1)      /* 01: [V3] System has an 8042 controller on port 60/64 */
 264 #define ACPI_FADT_NO_VGA            (1<<2)      /* 02: [V4] It is not safe to probe for VGA hardware */
 265 #define ACPI_FADT_NO_MSI            (1<<3)      /* 03: [V4] Message Signaled Interrupts (MSI) must not be enabled */
 266 #define ACPI_FADT_NO_ASPM           (1<<4)      /* 04: [V4] PCIe ASPM control must not be enabled */
 267
 268 #define FADT2_REVISION_ID               3
 269
 270 /* Masks for FADT flags */
 271
 272 #define ACPI_FADT_WBINVD            (1) /* 00: [V1] The wbinvd instruction works properly */
 273 #define ACPI_FADT_WBINVD_FLUSH      (1<<1)      /* 01: [V1] wbinvd flushes but does not invalidate caches */
 274 #define ACPI_FADT_C1_SUPPORTED      (1<<2)      /* 02: [V1] All processors support C1 state */
 275 #define ACPI_FADT_C2_MP_SUPPORTED   (1<<3)      /* 03: [V1] C2 state works on MP system */
 276 #define ACPI_FADT_POWER_BUTTON      (1<<4)      /* 04: [V1] Power button is handled as a control method device */
 277 #define ACPI_FADT_SLEEP_BUTTON      (1<<5)      /* 05: [V1] Sleep button is handled as a control method device */
 278 #define ACPI_FADT_FIXED_RTC         (1<<6)      /* 06: [V1] RTC wakeup status not in fixed register space */
 279 #define ACPI_FADT_S4_RTC_WAKE       (1<<7)      /* 07: [V1] RTC alarm can wake system from S4 */
 280 #define ACPI_FADT_32BIT_TIMER       (1<<8)      /* 08: [V1] ACPI timer width is 32-bit (0=24-bit) */
 281 #define ACPI_FADT_DOCKING_SUPPORTED (1<<9)      /* 09: [V1] Docking supported */
 282 #define ACPI_FADT_RESET_REGISTER    (1<<10)     /* 10: [V2] System reset via the FADT RESET_REG supported */
 283 #define ACPI_FADT_SEALED_CASE       (1<<11)     /* 11: [V3] No internal expansion capabilities and case is sealed */
 284 #define ACPI_FADT_HEADLESS          (1<<12)     /* 12: [V3] No local video capabilities or local input devices */
 285 #define ACPI_FADT_SLEEP_TYPE        (1<<13)     /* 13: [V3] Must execute native instruction after writing  SLP_TYPx register */
 286 #define ACPI_FADT_PCI_EXPRESS_WAKE  (1<<14)     /* 14: [V4] System supports PCIEXP_WAKE (STS/EN) bits (ACPI 3.0) */
 287 #define ACPI_FADT_PLATFORM_CLOCK    (1<<15)     /* 15: [V4] OSPM should use platform-provided timer (ACPI 3.0) */
 288 #define ACPI_FADT_S4_RTC_VALID      (1<<16)     /* 16: [V4] Contents of RTC_STS valid after S4 wake (ACPI 3.0) */
 289 #define ACPI_FADT_REMOTE_POWER_ON   (1<<17)     /* 17: [V4] System is compatible with remote power on (ACPI 3.0) */
 290 #define ACPI_FADT_APIC_CLUSTER      (1<<18)     /* 18: [V4] All local APICs must use cluster model (ACPI 3.0) */
 291 #define ACPI_FADT_APIC_PHYSICAL     (1<<19)     /* 19: [V4] All local x_aPICs must use physical dest mode (ACPI 3.0) */
 292
 293 /* Values for preferred_profile (Preferred Power Management Profiles) */
 294
 295 enum acpi_prefered_pm_profiles {
 296         PM_UNSPECIFIED = 0,
 297         PM_DESKTOP = 1,
 298         PM_MOBILE = 2,
 299         PM_WORKSTATION = 3,
 300         PM_ENTERPRISE_SERVER = 4,
 301         PM_SOHO_SERVER = 5,
 302         PM_APPLIANCE_PC = 6
 303 };
 304
 305 /* Reset to default packing */
 306
 307 #pragma pack()
 308
 309 #define ACPI_FADT_OFFSET(f)             (u8) ACPI_OFFSET (struct acpi_table_fadt, f)
 310
 311 /*
 312  * Internal table-related structures
 313  */
 314 union acpi_name_union {
 315         u32 integer;
 316         char ascii[4];
 317 };
 318
 319 /* Internal ACPI Table Descriptor. One per ACPI table. */
 320
 321 struct acpi_table_desc {
 322         acpi_physical_address address;
 323         struct acpi_table_header *pointer;
 324         u32 length;             /* Length fixed at 32 bits */
 325         union acpi_name_union signature;
 326         acpi_owner_id owner_id;
 327         u8 flags;
 328 };
 329
 330 /* Masks for Flags field above */
 331
 332 #define ACPI_TABLE_ORIGIN_UNKNOWN       (0)
 333 #define ACPI_TABLE_ORIGIN_MAPPED        (1)
 334 #define ACPI_TABLE_ORIGIN_ALLOCATED     (2)
 335 #define ACPI_TABLE_ORIGIN_OVERRIDE      (4)
 336 #define ACPI_TABLE_ORIGIN_MASK          (7)
 337 #define ACPI_TABLE_IS_LOADED            (8)
 338
 339 /*
 340  * Get the remaining ACPI tables
 341  */
 342
 343 #include <acpi/actbl1.h>
 344 #include <acpi/actbl2.h>
 345
 346 /*
 347  * Sizes of the various flavors of FADT. We need to look closely
 348  * at the FADT length because the version number essentially tells
 349  * us nothing because of many BIOS bugs where the version does not
 350  * match the expected length. In other words, the length of the
 351  * FADT is the bottom line as to what the version really is.
 352  *
 353  * For reference, the values below are as follows:
 354  *     FADT V1  size: 0x74
 355  *     FADT V2  size: 0x84
 356  *     FADT V3+ size: 0xF4
 357  */
 358 #define ACPI_FADT_V1_SIZE       (u32) (ACPI_FADT_OFFSET (flags) + 4)
 359 #define ACPI_FADT_V2_SIZE       (u32) (ACPI_FADT_OFFSET (reserved4[0]) + 3)
 360 #define ACPI_FADT_V3_SIZE       (u32) (sizeof (struct acpi_table_fadt))
 361
 362 #endif                          /* __ACTBL_H__ */