1 /****************************************************************************** 2 * 3 * Name: actbl.h - Basic ACPI Table Definitions 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2014, 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: C bitfields are not used for this reason: 83 * 84 * "Bitfields are great and easy to read, but unfortunately the C language 85 * does not specify the layout of bitfields in memory, which means they are 86 * essentially useless for dealing with packed data in on-disk formats or 87 * binary wire protocols." (Or ACPI tables and buffers.) "If you ask me, 88 * this decision was a design error in C. Ritchie could have picked an order 89 * and stuck with it." Norman Ramsey. 90 * See http://stackoverflow.com/a/1053662/41661 91 */ 92 93 /******************************************************************************* 94 * 95 * Master ACPI Table Header. This common header is used by all ACPI tables 96 * except the RSDP and FACS. 97 * 98 ******************************************************************************/ 99 100 struct acpi_table_header { 101 char signature[ACPI_NAME_SIZE]; /* ASCII table signature */ 102 u32 length; /* Length of table in bytes, including this header */ 103 u8 revision; /* ACPI Specification minor version number */ 104 u8 checksum; /* To make sum of entire table == 0 */ 105 char oem_id[ACPI_OEM_ID_SIZE]; /* ASCII OEM identification */ 106 char oem_table_id[ACPI_OEM_TABLE_ID_SIZE]; /* ASCII OEM table identification */ 107 u32 oem_revision; /* OEM revision number */ 108 char asl_compiler_id[ACPI_NAME_SIZE]; /* ASCII ASL compiler vendor ID */ 109 u32 asl_compiler_revision; /* ASL compiler version */ 110 }; 111 112 /******************************************************************************* 113 * 114 * GAS - Generic Address Structure (ACPI 2.0+) 115 * 116 * Note: Since this structure is used in the ACPI tables, it is byte aligned. 117 * If misaligned access is not supported by the hardware, accesses to the 118 * 64-bit Address field must be performed with care. 119 * 120 ******************************************************************************/ 121 122 struct acpi_generic_address { 123 u8 space_id; /* Address space where struct or register exists */ 124 u8 bit_width; /* Size in bits of given register */ 125 u8 bit_offset; /* Bit offset within the register */ 126 u8 access_width; /* Minimum Access size (ACPI 3.0) */ 127 u64 address; /* 64-bit address of struct or register */ 128 }; 129 130 /******************************************************************************* 131 * 132 * RSDP - Root System Description Pointer (Signature is "RSD PTR ") 133 * Version 2 134 * 135 ******************************************************************************/ 136 137 struct acpi_table_rsdp { 138 char signature[8]; /* ACPI signature, contains "RSD PTR " */ 139 u8 checksum; /* ACPI 1.0 checksum */ 140 char oem_id[ACPI_OEM_ID_SIZE]; /* OEM identification */ 141 u8 revision; /* Must be (0) for ACPI 1.0 or (2) for ACPI 2.0+ */ 142 u32 rsdt_physical_address; /* 32-bit physical address of the RSDT */ 143 u32 length; /* Table length in bytes, including header (ACPI 2.0+) */ 144 u64 xsdt_physical_address; /* 64-bit physical address of the XSDT (ACPI 2.0+) */ 145 u8 extended_checksum; /* Checksum of entire table (ACPI 2.0+) */ 146 u8 reserved[3]; /* Reserved, must be zero */ 147 }; 148 149 /* Standalone struct for the ACPI 1.0 RSDP */ 150 151 struct acpi_rsdp_common { 152 char signature[8]; 153 u8 checksum; 154 char oem_id[ACPI_OEM_ID_SIZE]; 155 u8 revision; 156 u32 rsdt_physical_address; 157 }; 158 159 /* Standalone struct for the extended part of the RSDP (ACPI 2.0+) */ 160 161 struct acpi_rsdp_extension { 162 u32 length; 163 u64 xsdt_physical_address; 164 u8 extended_checksum; 165 u8 reserved[3]; 166 }; 167 168 /******************************************************************************* 169 * 170 * RSDT/XSDT - Root System Description Tables 171 * Version 1 (both) 172 * 173 ******************************************************************************/ 174 175 struct acpi_table_rsdt { 176 struct acpi_table_header header; /* Common ACPI table header */ 177 u32 table_offset_entry[1]; /* Array of pointers to ACPI tables */ 178 }; 179 180 struct acpi_table_xsdt { 181 struct acpi_table_header header; /* Common ACPI table header */ 182 u64 table_offset_entry[1]; /* Array of pointers to ACPI tables */ 183 }; 184 185 #define ACPI_RSDT_ENTRY_SIZE (sizeof (u32)) 186 #define ACPI_XSDT_ENTRY_SIZE (sizeof (u64)) 187 188 /******************************************************************************* 189 * 190 * FACS - Firmware ACPI Control Structure (FACS) 191 * 192 ******************************************************************************/ 193 194 struct acpi_table_facs { 195 char signature[4]; /* ASCII table signature */ 196 u32 length; /* Length of structure, in bytes */ 197 u32 hardware_signature; /* Hardware configuration signature */ 198 u32 firmware_waking_vector; /* 32-bit physical address of the Firmware Waking Vector */ 199 u32 global_lock; /* Global Lock for shared hardware resources */ 200 u32 flags; 201 u64 xfirmware_waking_vector; /* 64-bit version of the Firmware Waking Vector (ACPI 2.0+) */ 202 u8 version; /* Version of this table (ACPI 2.0+) */ 203 u8 reserved[3]; /* Reserved, must be zero */ 204 u32 ospm_flags; /* Flags to be set by OSPM (ACPI 4.0) */ 205 u8 reserved1[24]; /* Reserved, must be zero */ 206 }; 207 208 /* Masks for global_lock flag field above */ 209 210 #define ACPI_GLOCK_PENDING (1) /* 00: Pending global lock ownership */ 211 #define ACPI_GLOCK_OWNED (1<<1) /* 01: Global lock is owned */ 212 213 /* Masks for Flags field above */ 214 215 #define ACPI_FACS_S4_BIOS_PRESENT (1) /* 00: S4BIOS support is present */ 216 #define ACPI_FACS_64BIT_WAKE (1<<1) /* 01: 64-bit wake vector supported (ACPI 4.0) */ 217 218 /* Masks for ospm_flags field above */ 219 220 #define ACPI_FACS_64BIT_ENVIRONMENT (1) /* 00: 64-bit wake environment is required (ACPI 4.0) */ 221 222 /******************************************************************************* 223 * 224 * FADT - Fixed ACPI Description Table (Signature "FACP") 225 * Version 4 226 * 227 ******************************************************************************/ 228 229 /* Fields common to all versions of the FADT */ 230 231 struct acpi_table_fadt { 232 struct acpi_table_header header; /* Common ACPI table header */ 233 u32 facs; /* 32-bit physical address of FACS */ 234 u32 dsdt; /* 32-bit physical address of DSDT */ 235 u8 model; /* System Interrupt Model (ACPI 1.0) - not used in ACPI 2.0+ */ 236 u8 preferred_profile; /* Conveys preferred power management profile to OSPM. */ 237 u16 sci_interrupt; /* System vector of SCI interrupt */ 238 u32 smi_command; /* 32-bit Port address of SMI command port */ 239 u8 acpi_enable; /* Value to write to SMI_CMD to enable ACPI */ 240 u8 acpi_disable; /* Value to write to SMI_CMD to disable ACPI */ 241 u8 s4_bios_request; /* Value to write to SMI_CMD to enter S4BIOS state */ 242 u8 pstate_control; /* Processor performance state control */ 243 u32 pm1a_event_block; /* 32-bit port address of Power Mgt 1a Event Reg Blk */ 244 u32 pm1b_event_block; /* 32-bit port address of Power Mgt 1b Event Reg Blk */ 245 u32 pm1a_control_block; /* 32-bit port address of Power Mgt 1a Control Reg Blk */ 246 u32 pm1b_control_block; /* 32-bit port address of Power Mgt 1b Control Reg Blk */ 247 u32 pm2_control_block; /* 32-bit port address of Power Mgt 2 Control Reg Blk */ 248 u32 pm_timer_block; /* 32-bit port address of Power Mgt Timer Ctrl Reg Blk */ 249 u32 gpe0_block; /* 32-bit port address of General Purpose Event 0 Reg Blk */ 250 u32 gpe1_block; /* 32-bit port address of General Purpose Event 1 Reg Blk */ 251 u8 pm1_event_length; /* Byte Length of ports at pm1x_event_block */ 252 u8 pm1_control_length; /* Byte Length of ports at pm1x_control_block */ 253 u8 pm2_control_length; /* Byte Length of ports at pm2_control_block */ 254 u8 pm_timer_length; /* Byte Length of ports at pm_timer_block */ 255 u8 gpe0_block_length; /* Byte Length of ports at gpe0_block */ 256 u8 gpe1_block_length; /* Byte Length of ports at gpe1_block */ 257 u8 gpe1_base; /* Offset in GPE number space where GPE1 events start */ 258 u8 cst_control; /* Support for the _CST object and C-States change notification */ 259 u16 c2_latency; /* Worst case HW latency to enter/exit C2 state */ 260 u16 c3_latency; /* Worst case HW latency to enter/exit C3 state */ 261 u16 flush_size; /* Processor memory cache line width, in bytes */ 262 u16 flush_stride; /* Number of flush strides that need to be read */ 263 u8 duty_offset; /* Processor duty cycle index in processor P_CNT reg */ 264 u8 duty_width; /* Processor duty cycle value bit width in P_CNT register */ 265 u8 day_alarm; /* Index to day-of-month alarm in RTC CMOS RAM */ 266 u8 month_alarm; /* Index to month-of-year alarm in RTC CMOS RAM */ 267 u8 century; /* Index to century in RTC CMOS RAM */ 268 u16 boot_flags; /* IA-PC Boot Architecture Flags (see below for individual flags) */ 269 u8 reserved; /* Reserved, must be zero */ 270 u32 flags; /* Miscellaneous flag bits (see below for individual flags) */ 271 struct acpi_generic_address reset_register; /* 64-bit address of the Reset register */ 272 u8 reset_value; /* Value to write to the reset_register port to reset the system */ 273 u16 arm_boot_flags; /* ARM-Specific Boot Flags (see below for individual flags) (ACPI 5.1) */ 274 u8 minor_revision; /* FADT Minor Revision (ACPI 5.1) */ 275 u64 Xfacs; /* 64-bit physical address of FACS */ 276 u64 Xdsdt; /* 64-bit physical address of DSDT */ 277 struct acpi_generic_address xpm1a_event_block; /* 64-bit Extended Power Mgt 1a Event Reg Blk address */ 278 struct acpi_generic_address xpm1b_event_block; /* 64-bit Extended Power Mgt 1b Event Reg Blk address */ 279 struct acpi_generic_address xpm1a_control_block; /* 64-bit Extended Power Mgt 1a Control Reg Blk address */ 280 struct acpi_generic_address xpm1b_control_block; /* 64-bit Extended Power Mgt 1b Control Reg Blk address */ 281 struct acpi_generic_address xpm2_control_block; /* 64-bit Extended Power Mgt 2 Control Reg Blk address */ 282 struct acpi_generic_address xpm_timer_block; /* 64-bit Extended Power Mgt Timer Ctrl Reg Blk address */ 283 struct acpi_generic_address xgpe0_block; /* 64-bit Extended General Purpose Event 0 Reg Blk address */ 284 struct acpi_generic_address xgpe1_block; /* 64-bit Extended General Purpose Event 1 Reg Blk address */ 285 struct acpi_generic_address sleep_control; /* 64-bit Sleep Control register (ACPI 5.0) */ 286 struct acpi_generic_address sleep_status; /* 64-bit Sleep Status register (ACPI 5.0) */ 287 }; 288 289 /* Masks for FADT IA-PC Boot Architecture Flags (boot_flags) [Vx]=Introduced in this FADT revision */ 290 291 #define ACPI_FADT_LEGACY_DEVICES (1) /* 00: [V2] System has LPC or ISA bus devices */ 292 #define ACPI_FADT_8042 (1<<1) /* 01: [V3] System has an 8042 controller on port 60/64 */ 293 #define ACPI_FADT_NO_VGA (1<<2) /* 02: [V4] It is not safe to probe for VGA hardware */ 294 #define ACPI_FADT_NO_MSI (1<<3) /* 03: [V4] Message Signaled Interrupts (MSI) must not be enabled */ 295 #define ACPI_FADT_NO_ASPM (1<<4) /* 04: [V4] PCIe ASPM control must not be enabled */ 296 #define ACPI_FADT_NO_CMOS_RTC (1<<5) /* 05: [V5] No CMOS real-time clock present */ 297 298 #define FADT2_REVISION_ID 3 299 300 /* Masks for FADT ARM Boot Architecture Flags (arm_boot_flags) ACPI 5.1 */ 301 302 #define ACPI_FADT_PSCI_COMPLIANT (1) /* 00: [V5+] PSCI 0.2+ is implemented */ 303 #define ACPI_FADT_PSCI_USE_HVC (1<<1) /* 01: [V5+] HVC must be used instead of SMC as the PSCI conduit */ 304 305 /* Masks for FADT flags */ 306 307 #define ACPI_FADT_WBINVD (1) /* 00: [V1] The WBINVD instruction works properly */ 308 #define ACPI_FADT_WBINVD_FLUSH (1<<1) /* 01: [V1] WBINVD flushes but does not invalidate caches */ 309 #define ACPI_FADT_C1_SUPPORTED (1<<2) /* 02: [V1] All processors support C1 state */ 310 #define ACPI_FADT_C2_MP_SUPPORTED (1<<3) /* 03: [V1] C2 state works on MP system */ 311 #define ACPI_FADT_POWER_BUTTON (1<<4) /* 04: [V1] Power button is handled as a control method device */ 312 #define ACPI_FADT_SLEEP_BUTTON (1<<5) /* 05: [V1] Sleep button is handled as a control method device */ 313 #define ACPI_FADT_FIXED_RTC (1<<6) /* 06: [V1] RTC wakeup status is not in fixed register space */ 314 #define ACPI_FADT_S4_RTC_WAKE (1<<7) /* 07: [V1] RTC alarm can wake system from S4 */ 315 #define ACPI_FADT_32BIT_TIMER (1<<8) /* 08: [V1] ACPI timer width is 32-bit (0=24-bit) */ 316 #define ACPI_FADT_DOCKING_SUPPORTED (1<<9) /* 09: [V1] Docking supported */ 317 #define ACPI_FADT_RESET_REGISTER (1<<10) /* 10: [V2] System reset via the FADT RESET_REG supported */ 318 #define ACPI_FADT_SEALED_CASE (1<<11) /* 11: [V3] No internal expansion capabilities and case is sealed */ 319 #define ACPI_FADT_HEADLESS (1<<12) /* 12: [V3] No local video capabilities or local input devices */ 320 #define ACPI_FADT_SLEEP_TYPE (1<<13) /* 13: [V3] Must execute native instruction after writing SLP_TYPx register */ 321 #define ACPI_FADT_PCI_EXPRESS_WAKE (1<<14) /* 14: [V4] System supports PCIEXP_WAKE (STS/EN) bits (ACPI 3.0) */ 322 #define ACPI_FADT_PLATFORM_CLOCK (1<<15) /* 15: [V4] OSPM should use platform-provided timer (ACPI 3.0) */ 323 #define ACPI_FADT_S4_RTC_VALID (1<<16) /* 16: [V4] Contents of RTC_STS valid after S4 wake (ACPI 3.0) */ 324 #define ACPI_FADT_REMOTE_POWER_ON (1<<17) /* 17: [V4] System is compatible with remote power on (ACPI 3.0) */ 325 #define ACPI_FADT_APIC_CLUSTER (1<<18) /* 18: [V4] All local APICs must use cluster model (ACPI 3.0) */ 326 #define ACPI_FADT_APIC_PHYSICAL (1<<19) /* 19: [V4] All local xAPICs must use physical dest mode (ACPI 3.0) */ 327 #define ACPI_FADT_HW_REDUCED (1<<20) /* 20: [V5] ACPI hardware is not implemented (ACPI 5.0) */ 328 #define ACPI_FADT_LOW_POWER_S0 (1<<21) /* 21: [V5] S0 power savings are equal or better than S3 (ACPI 5.0) */ 329 330 /* Values for preferred_profile (Preferred Power Management Profiles) */ 331 332 enum acpi_preferred_pm_profiles { 333 PM_UNSPECIFIED = 0, 334 PM_DESKTOP = 1, 335 PM_MOBILE = 2, 336 PM_WORKSTATION = 3, 337 PM_ENTERPRISE_SERVER = 4, 338 PM_SOHO_SERVER = 5, 339 PM_APPLIANCE_PC = 6, 340 PM_PERFORMANCE_SERVER = 7, 341 PM_TABLET = 8 342 }; 343 344 /* Values for sleep_status and sleep_control registers (V5 FADT) */ 345 346 #define ACPI_X_WAKE_STATUS 0x80 347 #define ACPI_X_SLEEP_TYPE_MASK 0x1C 348 #define ACPI_X_SLEEP_TYPE_POSITION 0x02 349 #define ACPI_X_SLEEP_ENABLE 0x20 350 351 /* Reset to default packing */ 352 353 #pragma pack() 354 355 /* 356 * Internal table-related structures 357 */ 358 union acpi_name_union { 359 u32 integer; 360 char ascii[4]; 361 }; 362 363 /* Internal ACPI Table Descriptor. One per ACPI table. */ 364 365 struct acpi_table_desc { 366 acpi_physical_address address; 367 struct acpi_table_header *pointer; 368 u32 length; /* Length fixed at 32 bits (fixed in table header) */ 369 union acpi_name_union signature; 370 acpi_owner_id owner_id; 371 u8 flags; 372 }; 373 374 /* Masks for Flags field above */ 375 376 #define ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL (0) /* Virtual address, external maintained */ 377 #define ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL (1) /* Physical address, internally mapped */ 378 #define ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL (2) /* Virtual address, internallly allocated */ 379 #define ACPI_TABLE_ORIGIN_MASK (3) 380 #define ACPI_TABLE_IS_LOADED (8) 381 382 /* 383 * Get the remaining ACPI tables 384 */ 385 #include <acpi/actbl1.h> 386 #include <acpi/actbl2.h> 387 #include <acpi/actbl3.h> 388 389 /* Macros used to generate offsets to specific table fields */ 390 391 #define ACPI_FADT_OFFSET(f) (u16) ACPI_OFFSET (struct acpi_table_fadt, f) 392 393 /* 394 * Sizes of the various flavors of FADT. We need to look closely 395 * at the FADT length because the version number essentially tells 396 * us nothing because of many BIOS bugs where the version does not 397 * match the expected length. In other words, the length of the 398 * FADT is the bottom line as to what the version really is. 399 * 400 * For reference, the values below are as follows: 401 * FADT V1 size: 0x074 402 * FADT V2 size: 0x084 403 * FADT V3 size: 0x0F4 404 * FADT V4 size: 0x0F4 405 * FADT V5 size: 0x10C 406 */ 407 #define ACPI_FADT_V1_SIZE (u32) (ACPI_FADT_OFFSET (flags) + 4) 408 #define ACPI_FADT_V2_SIZE (u32) (ACPI_FADT_OFFSET (minor_revision) + 1) 409 #define ACPI_FADT_V3_SIZE (u32) (ACPI_FADT_OFFSET (sleep_control)) 410 #define ACPI_FADT_V5_SIZE (u32) (sizeof (struct acpi_table_fadt)) 411 412 #endif /* __ACTBL_H__ */ 413