1 /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ 2 /****************************************************************************** 3 * 4 * Name: actbl.h - Basic ACPI Table Definitions 5 * 6 * Copyright (C) 2000 - 2018, Intel Corp. 7 * 8 *****************************************************************************/ 9 10 #ifndef __ACTBL_H__ 11 #define __ACTBL_H__ 12 13 /******************************************************************************* 14 * 15 * Fundamental ACPI tables 16 * 17 * This file contains definitions for the ACPI tables that are directly consumed 18 * by ACPICA. All other tables are consumed by the OS-dependent ACPI-related 19 * device drivers and other OS support code. 20 * 21 * The RSDP and FACS do not use the common ACPI table header. All other ACPI 22 * tables use the header. 23 * 24 ******************************************************************************/ 25 26 /* 27 * Values for description table header signatures for tables defined in this 28 * file. Useful because they make it more difficult to inadvertently type in 29 * the wrong signature. 30 */ 31 #define ACPI_SIG_DSDT "DSDT" /* Differentiated System Description Table */ 32 #define ACPI_SIG_FADT "FACP" /* Fixed ACPI Description Table */ 33 #define ACPI_SIG_FACS "FACS" /* Firmware ACPI Control Structure */ 34 #define ACPI_SIG_OSDT "OSDT" /* Override System Description Table */ 35 #define ACPI_SIG_PSDT "PSDT" /* Persistent System Description Table */ 36 #define ACPI_SIG_RSDP "RSD PTR " /* Root System Description Pointer */ 37 #define ACPI_SIG_RSDT "RSDT" /* Root System Description Table */ 38 #define ACPI_SIG_XSDT "XSDT" /* Extended System Description Table */ 39 #define ACPI_SIG_SSDT "SSDT" /* Secondary System Description Table */ 40 #define ACPI_RSDP_NAME "RSDP" /* Short name for RSDP, not signature */ 41 42 /* 43 * All tables and structures must be byte-packed to match the ACPI 44 * specification, since the tables are provided by the system BIOS 45 */ 46 #pragma pack(1) 47 48 /* 49 * Note: C bitfields are not used for this reason: 50 * 51 * "Bitfields are great and easy to read, but unfortunately the C language 52 * does not specify the layout of bitfields in memory, which means they are 53 * essentially useless for dealing with packed data in on-disk formats or 54 * binary wire protocols." (Or ACPI tables and buffers.) "If you ask me, 55 * this decision was a design error in C. Ritchie could have picked an order 56 * and stuck with it." Norman Ramsey. 57 * See http://stackoverflow.com/a/1053662/41661 58 */ 59 60 /******************************************************************************* 61 * 62 * Master ACPI Table Header. This common header is used by all ACPI tables 63 * except the RSDP and FACS. 64 * 65 ******************************************************************************/ 66 67 struct acpi_table_header { 68 char signature[ACPI_NAME_SIZE]; /* ASCII table signature */ 69 u32 length; /* Length of table in bytes, including this header */ 70 u8 revision; /* ACPI Specification minor version number */ 71 u8 checksum; /* To make sum of entire table == 0 */ 72 char oem_id[ACPI_OEM_ID_SIZE]; /* ASCII OEM identification */ 73 char oem_table_id[ACPI_OEM_TABLE_ID_SIZE]; /* ASCII OEM table identification */ 74 u32 oem_revision; /* OEM revision number */ 75 char asl_compiler_id[ACPI_NAME_SIZE]; /* ASCII ASL compiler vendor ID */ 76 u32 asl_compiler_revision; /* ASL compiler version */ 77 }; 78 79 /******************************************************************************* 80 * 81 * GAS - Generic Address Structure (ACPI 2.0+) 82 * 83 * Note: Since this structure is used in the ACPI tables, it is byte aligned. 84 * If misaligned access is not supported by the hardware, accesses to the 85 * 64-bit Address field must be performed with care. 86 * 87 ******************************************************************************/ 88 89 struct acpi_generic_address { 90 u8 space_id; /* Address space where struct or register exists */ 91 u8 bit_width; /* Size in bits of given register */ 92 u8 bit_offset; /* Bit offset within the register */ 93 u8 access_width; /* Minimum Access size (ACPI 3.0) */ 94 u64 address; /* 64-bit address of struct or register */ 95 }; 96 97 /******************************************************************************* 98 * 99 * RSDP - Root System Description Pointer (Signature is "RSD PTR ") 100 * Version 2 101 * 102 ******************************************************************************/ 103 104 struct acpi_table_rsdp { 105 char signature[8]; /* ACPI signature, contains "RSD PTR " */ 106 u8 checksum; /* ACPI 1.0 checksum */ 107 char oem_id[ACPI_OEM_ID_SIZE]; /* OEM identification */ 108 u8 revision; /* Must be (0) for ACPI 1.0 or (2) for ACPI 2.0+ */ 109 u32 rsdt_physical_address; /* 32-bit physical address of the RSDT */ 110 u32 length; /* Table length in bytes, including header (ACPI 2.0+) */ 111 u64 xsdt_physical_address; /* 64-bit physical address of the XSDT (ACPI 2.0+) */ 112 u8 extended_checksum; /* Checksum of entire table (ACPI 2.0+) */ 113 u8 reserved[3]; /* Reserved, must be zero */ 114 }; 115 116 /* Standalone struct for the ACPI 1.0 RSDP */ 117 118 struct acpi_rsdp_common { 119 char signature[8]; 120 u8 checksum; 121 char oem_id[ACPI_OEM_ID_SIZE]; 122 u8 revision; 123 u32 rsdt_physical_address; 124 }; 125 126 /* Standalone struct for the extended part of the RSDP (ACPI 2.0+) */ 127 128 struct acpi_rsdp_extension { 129 u32 length; 130 u64 xsdt_physical_address; 131 u8 extended_checksum; 132 u8 reserved[3]; 133 }; 134 135 /******************************************************************************* 136 * 137 * RSDT/XSDT - Root System Description Tables 138 * Version 1 (both) 139 * 140 ******************************************************************************/ 141 142 struct acpi_table_rsdt { 143 struct acpi_table_header header; /* Common ACPI table header */ 144 u32 table_offset_entry[1]; /* Array of pointers to ACPI tables */ 145 }; 146 147 struct acpi_table_xsdt { 148 struct acpi_table_header header; /* Common ACPI table header */ 149 u64 table_offset_entry[1]; /* Array of pointers to ACPI tables */ 150 }; 151 152 #define ACPI_RSDT_ENTRY_SIZE (sizeof (u32)) 153 #define ACPI_XSDT_ENTRY_SIZE (sizeof (u64)) 154 155 /******************************************************************************* 156 * 157 * FACS - Firmware ACPI Control Structure (FACS) 158 * 159 ******************************************************************************/ 160 161 struct acpi_table_facs { 162 char signature[4]; /* ASCII table signature */ 163 u32 length; /* Length of structure, in bytes */ 164 u32 hardware_signature; /* Hardware configuration signature */ 165 u32 firmware_waking_vector; /* 32-bit physical address of the Firmware Waking Vector */ 166 u32 global_lock; /* Global Lock for shared hardware resources */ 167 u32 flags; 168 u64 xfirmware_waking_vector; /* 64-bit version of the Firmware Waking Vector (ACPI 2.0+) */ 169 u8 version; /* Version of this table (ACPI 2.0+) */ 170 u8 reserved[3]; /* Reserved, must be zero */ 171 u32 ospm_flags; /* Flags to be set by OSPM (ACPI 4.0) */ 172 u8 reserved1[24]; /* Reserved, must be zero */ 173 }; 174 175 /* Masks for global_lock flag field above */ 176 177 #define ACPI_GLOCK_PENDING (1) /* 00: Pending global lock ownership */ 178 #define ACPI_GLOCK_OWNED (1<<1) /* 01: Global lock is owned */ 179 180 /* Masks for Flags field above */ 181 182 #define ACPI_FACS_S4_BIOS_PRESENT (1) /* 00: S4BIOS support is present */ 183 #define ACPI_FACS_64BIT_WAKE (1<<1) /* 01: 64-bit wake vector supported (ACPI 4.0) */ 184 185 /* Masks for ospm_flags field above */ 186 187 #define ACPI_FACS_64BIT_ENVIRONMENT (1) /* 00: 64-bit wake environment is required (ACPI 4.0) */ 188 189 /******************************************************************************* 190 * 191 * FADT - Fixed ACPI Description Table (Signature "FACP") 192 * Version 6 193 * 194 ******************************************************************************/ 195 196 /* Fields common to all versions of the FADT */ 197 198 struct acpi_table_fadt { 199 struct acpi_table_header header; /* Common ACPI table header */ 200 u32 facs; /* 32-bit physical address of FACS */ 201 u32 dsdt; /* 32-bit physical address of DSDT */ 202 u8 model; /* System Interrupt Model (ACPI 1.0) - not used in ACPI 2.0+ */ 203 u8 preferred_profile; /* Conveys preferred power management profile to OSPM. */ 204 u16 sci_interrupt; /* System vector of SCI interrupt */ 205 u32 smi_command; /* 32-bit Port address of SMI command port */ 206 u8 acpi_enable; /* Value to write to SMI_CMD to enable ACPI */ 207 u8 acpi_disable; /* Value to write to SMI_CMD to disable ACPI */ 208 u8 s4_bios_request; /* Value to write to SMI_CMD to enter S4BIOS state */ 209 u8 pstate_control; /* Processor performance state control */ 210 u32 pm1a_event_block; /* 32-bit port address of Power Mgt 1a Event Reg Blk */ 211 u32 pm1b_event_block; /* 32-bit port address of Power Mgt 1b Event Reg Blk */ 212 u32 pm1a_control_block; /* 32-bit port address of Power Mgt 1a Control Reg Blk */ 213 u32 pm1b_control_block; /* 32-bit port address of Power Mgt 1b Control Reg Blk */ 214 u32 pm2_control_block; /* 32-bit port address of Power Mgt 2 Control Reg Blk */ 215 u32 pm_timer_block; /* 32-bit port address of Power Mgt Timer Ctrl Reg Blk */ 216 u32 gpe0_block; /* 32-bit port address of General Purpose Event 0 Reg Blk */ 217 u32 gpe1_block; /* 32-bit port address of General Purpose Event 1 Reg Blk */ 218 u8 pm1_event_length; /* Byte Length of ports at pm1x_event_block */ 219 u8 pm1_control_length; /* Byte Length of ports at pm1x_control_block */ 220 u8 pm2_control_length; /* Byte Length of ports at pm2_control_block */ 221 u8 pm_timer_length; /* Byte Length of ports at pm_timer_block */ 222 u8 gpe0_block_length; /* Byte Length of ports at gpe0_block */ 223 u8 gpe1_block_length; /* Byte Length of ports at gpe1_block */ 224 u8 gpe1_base; /* Offset in GPE number space where GPE1 events start */ 225 u8 cst_control; /* Support for the _CST object and C-States change notification */ 226 u16 c2_latency; /* Worst case HW latency to enter/exit C2 state */ 227 u16 c3_latency; /* Worst case HW latency to enter/exit C3 state */ 228 u16 flush_size; /* Processor memory cache line width, in bytes */ 229 u16 flush_stride; /* Number of flush strides that need to be read */ 230 u8 duty_offset; /* Processor duty cycle index in processor P_CNT reg */ 231 u8 duty_width; /* Processor duty cycle value bit width in P_CNT register */ 232 u8 day_alarm; /* Index to day-of-month alarm in RTC CMOS RAM */ 233 u8 month_alarm; /* Index to month-of-year alarm in RTC CMOS RAM */ 234 u8 century; /* Index to century in RTC CMOS RAM */ 235 u16 boot_flags; /* IA-PC Boot Architecture Flags (see below for individual flags) */ 236 u8 reserved; /* Reserved, must be zero */ 237 u32 flags; /* Miscellaneous flag bits (see below for individual flags) */ 238 struct acpi_generic_address reset_register; /* 64-bit address of the Reset register */ 239 u8 reset_value; /* Value to write to the reset_register port to reset the system */ 240 u16 arm_boot_flags; /* ARM-Specific Boot Flags (see below for individual flags) (ACPI 5.1) */ 241 u8 minor_revision; /* FADT Minor Revision (ACPI 5.1) */ 242 u64 Xfacs; /* 64-bit physical address of FACS */ 243 u64 Xdsdt; /* 64-bit physical address of DSDT */ 244 struct acpi_generic_address xpm1a_event_block; /* 64-bit Extended Power Mgt 1a Event Reg Blk address */ 245 struct acpi_generic_address xpm1b_event_block; /* 64-bit Extended Power Mgt 1b Event Reg Blk address */ 246 struct acpi_generic_address xpm1a_control_block; /* 64-bit Extended Power Mgt 1a Control Reg Blk address */ 247 struct acpi_generic_address xpm1b_control_block; /* 64-bit Extended Power Mgt 1b Control Reg Blk address */ 248 struct acpi_generic_address xpm2_control_block; /* 64-bit Extended Power Mgt 2 Control Reg Blk address */ 249 struct acpi_generic_address xpm_timer_block; /* 64-bit Extended Power Mgt Timer Ctrl Reg Blk address */ 250 struct acpi_generic_address xgpe0_block; /* 64-bit Extended General Purpose Event 0 Reg Blk address */ 251 struct acpi_generic_address xgpe1_block; /* 64-bit Extended General Purpose Event 1 Reg Blk address */ 252 struct acpi_generic_address sleep_control; /* 64-bit Sleep Control register (ACPI 5.0) */ 253 struct acpi_generic_address sleep_status; /* 64-bit Sleep Status register (ACPI 5.0) */ 254 u64 hypervisor_id; /* Hypervisor Vendor ID (ACPI 6.0) */ 255 }; 256 257 /* Masks for FADT IA-PC Boot Architecture Flags (boot_flags) [Vx]=Introduced in this FADT revision */ 258 259 #define ACPI_FADT_LEGACY_DEVICES (1) /* 00: [V2] System has LPC or ISA bus devices */ 260 #define ACPI_FADT_8042 (1<<1) /* 01: [V3] System has an 8042 controller on port 60/64 */ 261 #define ACPI_FADT_NO_VGA (1<<2) /* 02: [V4] It is not safe to probe for VGA hardware */ 262 #define ACPI_FADT_NO_MSI (1<<3) /* 03: [V4] Message Signaled Interrupts (MSI) must not be enabled */ 263 #define ACPI_FADT_NO_ASPM (1<<4) /* 04: [V4] PCIe ASPM control must not be enabled */ 264 #define ACPI_FADT_NO_CMOS_RTC (1<<5) /* 05: [V5] No CMOS real-time clock present */ 265 266 #define FADT2_REVISION_ID 3 267 268 /* Masks for FADT ARM Boot Architecture Flags (arm_boot_flags) ACPI 5.1 */ 269 270 #define ACPI_FADT_PSCI_COMPLIANT (1) /* 00: [V5+] PSCI 0.2+ is implemented */ 271 #define ACPI_FADT_PSCI_USE_HVC (1<<1) /* 01: [V5+] HVC must be used instead of SMC as the PSCI conduit */ 272 273 /* Masks for FADT flags */ 274 275 #define ACPI_FADT_WBINVD (1) /* 00: [V1] The WBINVD instruction works properly */ 276 #define ACPI_FADT_WBINVD_FLUSH (1<<1) /* 01: [V1] WBINVD flushes but does not invalidate caches */ 277 #define ACPI_FADT_C1_SUPPORTED (1<<2) /* 02: [V1] All processors support C1 state */ 278 #define ACPI_FADT_C2_MP_SUPPORTED (1<<3) /* 03: [V1] C2 state works on MP system */ 279 #define ACPI_FADT_POWER_BUTTON (1<<4) /* 04: [V1] Power button is handled as a control method device */ 280 #define ACPI_FADT_SLEEP_BUTTON (1<<5) /* 05: [V1] Sleep button is handled as a control method device */ 281 #define ACPI_FADT_FIXED_RTC (1<<6) /* 06: [V1] RTC wakeup status is not in fixed register space */ 282 #define ACPI_FADT_S4_RTC_WAKE (1<<7) /* 07: [V1] RTC alarm can wake system from S4 */ 283 #define ACPI_FADT_32BIT_TIMER (1<<8) /* 08: [V1] ACPI timer width is 32-bit (0=24-bit) */ 284 #define ACPI_FADT_DOCKING_SUPPORTED (1<<9) /* 09: [V1] Docking supported */ 285 #define ACPI_FADT_RESET_REGISTER (1<<10) /* 10: [V2] System reset via the FADT RESET_REG supported */ 286 #define ACPI_FADT_SEALED_CASE (1<<11) /* 11: [V3] No internal expansion capabilities and case is sealed */ 287 #define ACPI_FADT_HEADLESS (1<<12) /* 12: [V3] No local video capabilities or local input devices */ 288 #define ACPI_FADT_SLEEP_TYPE (1<<13) /* 13: [V3] Must execute native instruction after writing SLP_TYPx register */ 289 #define ACPI_FADT_PCI_EXPRESS_WAKE (1<<14) /* 14: [V4] System supports PCIEXP_WAKE (STS/EN) bits (ACPI 3.0) */ 290 #define ACPI_FADT_PLATFORM_CLOCK (1<<15) /* 15: [V4] OSPM should use platform-provided timer (ACPI 3.0) */ 291 #define ACPI_FADT_S4_RTC_VALID (1<<16) /* 16: [V4] Contents of RTC_STS valid after S4 wake (ACPI 3.0) */ 292 #define ACPI_FADT_REMOTE_POWER_ON (1<<17) /* 17: [V4] System is compatible with remote power on (ACPI 3.0) */ 293 #define ACPI_FADT_APIC_CLUSTER (1<<18) /* 18: [V4] All local APICs must use cluster model (ACPI 3.0) */ 294 #define ACPI_FADT_APIC_PHYSICAL (1<<19) /* 19: [V4] All local xAPICs must use physical dest mode (ACPI 3.0) */ 295 #define ACPI_FADT_HW_REDUCED (1<<20) /* 20: [V5] ACPI hardware is not implemented (ACPI 5.0) */ 296 #define ACPI_FADT_LOW_POWER_S0 (1<<21) /* 21: [V5] S0 power savings are equal or better than S3 (ACPI 5.0) */ 297 298 /* Values for preferred_profile (Preferred Power Management Profiles) */ 299 300 enum acpi_preferred_pm_profiles { 301 PM_UNSPECIFIED = 0, 302 PM_DESKTOP = 1, 303 PM_MOBILE = 2, 304 PM_WORKSTATION = 3, 305 PM_ENTERPRISE_SERVER = 4, 306 PM_SOHO_SERVER = 5, 307 PM_APPLIANCE_PC = 6, 308 PM_PERFORMANCE_SERVER = 7, 309 PM_TABLET = 8 310 }; 311 312 /* Values for sleep_status and sleep_control registers (V5+ FADT) */ 313 314 #define ACPI_X_WAKE_STATUS 0x80 315 #define ACPI_X_SLEEP_TYPE_MASK 0x1C 316 #define ACPI_X_SLEEP_TYPE_POSITION 0x02 317 #define ACPI_X_SLEEP_ENABLE 0x20 318 319 /* Reset to default packing */ 320 321 #pragma pack() 322 323 /* 324 * Internal table-related structures 325 */ 326 union acpi_name_union { 327 u32 integer; 328 char ascii[4]; 329 }; 330 331 /* Internal ACPI Table Descriptor. One per ACPI table. */ 332 333 struct acpi_table_desc { 334 acpi_physical_address address; 335 struct acpi_table_header *pointer; 336 u32 length; /* Length fixed at 32 bits (fixed in table header) */ 337 union acpi_name_union signature; 338 acpi_owner_id owner_id; 339 u8 flags; 340 u16 validation_count; 341 }; 342 343 /* 344 * Maximum value of the validation_count field in struct acpi_table_desc. 345 * When reached, validation_count cannot be changed any more and the table will 346 * be permanently regarded as validated. 347 * 348 * This is to prevent situations in which unbalanced table get/put operations 349 * may cause premature table unmapping in the OS to happen. 350 * 351 * The maximum validation count can be defined to any value, but should be 352 * greater than the maximum number of OS early stage mapping slots to avoid 353 * leaking early stage table mappings to the late stage. 354 */ 355 #define ACPI_MAX_TABLE_VALIDATIONS ACPI_UINT16_MAX 356 357 /* Masks for Flags field above */ 358 359 #define ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL (0) /* Virtual address, external maintained */ 360 #define ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL (1) /* Physical address, internally mapped */ 361 #define ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL (2) /* Virtual address, internallly allocated */ 362 #define ACPI_TABLE_ORIGIN_MASK (3) 363 #define ACPI_TABLE_IS_VERIFIED (4) 364 #define ACPI_TABLE_IS_LOADED (8) 365 366 /* 367 * Get the remaining ACPI tables 368 */ 369 #include <acpi/actbl1.h> 370 #include <acpi/actbl2.h> 371 #include <acpi/actbl3.h> 372 373 /* Macros used to generate offsets to specific table fields */ 374 375 #define ACPI_FADT_OFFSET(f) (u16) ACPI_OFFSET (struct acpi_table_fadt, f) 376 377 /* 378 * Sizes of the various flavors of FADT. We need to look closely 379 * at the FADT length because the version number essentially tells 380 * us nothing because of many BIOS bugs where the version does not 381 * match the expected length. In other words, the length of the 382 * FADT is the bottom line as to what the version really is. 383 * 384 * For reference, the values below are as follows: 385 * FADT V1 size: 0x074 386 * FADT V2 size: 0x084 387 * FADT V3 size: 0x0F4 388 * FADT V4 size: 0x0F4 389 * FADT V5 size: 0x10C 390 * FADT V6 size: 0x114 391 */ 392 #define ACPI_FADT_V1_SIZE (u32) (ACPI_FADT_OFFSET (flags) + 4) 393 #define ACPI_FADT_V2_SIZE (u32) (ACPI_FADT_OFFSET (minor_revision) + 1) 394 #define ACPI_FADT_V3_SIZE (u32) (ACPI_FADT_OFFSET (sleep_control)) 395 #define ACPI_FADT_V5_SIZE (u32) (ACPI_FADT_OFFSET (hypervisor_id)) 396 #define ACPI_FADT_V6_SIZE (u32) (sizeof (struct acpi_table_fadt)) 397 398 #define ACPI_FADT_CONFORMANCE "ACPI 6.1 (FADT version 6)" 399 400 #endif /* __ACTBL_H__ */ 401