1 /******************************************************************************
3 * Name: actbl.h - Basic ACPI Table Definitions
5 *****************************************************************************/
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47 /*******************************************************************************
49 * Fundamental ACPI tables
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.
55 * The RSDP and FACS do not use the common ACPI table header. All other ACPI
56 * tables use the header.
58 ******************************************************************************/
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.
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 */
76 * All tables and structures must be byte-packed to match the ACPI
77 * specification, since the tables are provided by the system BIOS
82 * Note: C bitfields are not used for this reason:
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
93 /*******************************************************************************
95 * Master ACPI Table Header. This common header is used by all ACPI tables
96 * except the RSDP and FACS.
98 ******************************************************************************/
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 */
112 /*******************************************************************************
114 * GAS - Generic Address Structure (ACPI 2.0+)
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.
120 ******************************************************************************/
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 */
130 /*******************************************************************************
132 * RSDP - Root System Description Pointer (Signature is "RSD PTR ")
135 ******************************************************************************/
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 */
149 #define ACPI_RSDP_REV0_SIZE 20 /* Size of original ACPI 1.0 RSDP */
151 /*******************************************************************************
153 * RSDT/XSDT - Root System Description Tables
156 ******************************************************************************/
158 struct acpi_table_rsdt {
159 struct acpi_table_header header; /* Common ACPI table header */
160 u32 table_offset_entry[1]; /* Array of pointers to ACPI tables */
163 struct acpi_table_xsdt {
164 struct acpi_table_header header; /* Common ACPI table header */
165 u64 table_offset_entry[1]; /* Array of pointers to ACPI tables */
168 /*******************************************************************************
170 * FACS - Firmware ACPI Control Structure (FACS)
172 ******************************************************************************/
174 struct acpi_table_facs {
175 char signature[4]; /* ASCII table signature */
176 u32 length; /* Length of structure, in bytes */
177 u32 hardware_signature; /* Hardware configuration signature */
178 u32 firmware_waking_vector; /* 32-bit physical address of the Firmware Waking Vector */
179 u32 global_lock; /* Global Lock for shared hardware resources */
181 u64 xfirmware_waking_vector; /* 64-bit version of the Firmware Waking Vector (ACPI 2.0+) */
182 u8 version; /* Version of this table (ACPI 2.0+) */
183 u8 reserved[3]; /* Reserved, must be zero */
184 u32 ospm_flags; /* Flags to be set by OSPM (ACPI 4.0) */
185 u8 reserved1[24]; /* Reserved, must be zero */
188 /* Masks for global_lock flag field above */
190 #define ACPI_GLOCK_PENDING (1) /* 00: Pending global lock ownership */
191 #define ACPI_GLOCK_OWNED (1<<1) /* 01: Global lock is owned */
193 /* Masks for Flags field above */
195 #define ACPI_FACS_S4_BIOS_PRESENT (1) /* 00: S4BIOS support is present */
196 #define ACPI_FACS_64BIT_WAKE (1<<1) /* 01: 64-bit wake vector supported (ACPI 4.0) */
198 /* Masks for ospm_flags field above */
200 #define ACPI_FACS_64BIT_ENVIRONMENT (1) /* 00: 64-bit wake environment is required (ACPI 4.0) */
202 /*******************************************************************************
204 * FADT - Fixed ACPI Description Table (Signature "FACP")
207 ******************************************************************************/
209 /* Fields common to all versions of the FADT */
211 struct acpi_table_fadt {
212 struct acpi_table_header header; /* Common ACPI table header */
213 u32 facs; /* 32-bit physical address of FACS */
214 u32 dsdt; /* 32-bit physical address of DSDT */
215 u8 model; /* System Interrupt Model (ACPI 1.0) - not used in ACPI 2.0+ */
216 u8 preferred_profile; /* Conveys preferred power management profile to OSPM. */
217 u16 sci_interrupt; /* System vector of SCI interrupt */
218 u32 smi_command; /* 32-bit Port address of SMI command port */
219 u8 acpi_enable; /* Value to write to SMI_CMD to enable ACPI */
220 u8 acpi_disable; /* Value to write to SMI_CMD to disable ACPI */
221 u8 s4_bios_request; /* Value to write to SMI_CMD to enter S4BIOS state */
222 u8 pstate_control; /* Processor performance state control */
223 u32 pm1a_event_block; /* 32-bit port address of Power Mgt 1a Event Reg Blk */
224 u32 pm1b_event_block; /* 32-bit port address of Power Mgt 1b Event Reg Blk */
225 u32 pm1a_control_block; /* 32-bit port address of Power Mgt 1a Control Reg Blk */
226 u32 pm1b_control_block; /* 32-bit port address of Power Mgt 1b Control Reg Blk */
227 u32 pm2_control_block; /* 32-bit port address of Power Mgt 2 Control Reg Blk */
228 u32 pm_timer_block; /* 32-bit port address of Power Mgt Timer Ctrl Reg Blk */
229 u32 gpe0_block; /* 32-bit port address of General Purpose Event 0 Reg Blk */
230 u32 gpe1_block; /* 32-bit port address of General Purpose Event 1 Reg Blk */
231 u8 pm1_event_length; /* Byte Length of ports at pm1x_event_block */
232 u8 pm1_control_length; /* Byte Length of ports at pm1x_control_block */
233 u8 pm2_control_length; /* Byte Length of ports at pm2_control_block */
234 u8 pm_timer_length; /* Byte Length of ports at pm_timer_block */
235 u8 gpe0_block_length; /* Byte Length of ports at gpe0_block */
236 u8 gpe1_block_length; /* Byte Length of ports at gpe1_block */
237 u8 gpe1_base; /* Offset in GPE number space where GPE1 events start */
238 u8 cst_control; /* Support for the _CST object and C-States change notification */
239 u16 c2_latency; /* Worst case HW latency to enter/exit C2 state */
240 u16 c3_latency; /* Worst case HW latency to enter/exit C3 state */
241 u16 flush_size; /* Processor memory cache line width, in bytes */
242 u16 flush_stride; /* Number of flush strides that need to be read */
243 u8 duty_offset; /* Processor duty cycle index in processor P_CNT reg */
244 u8 duty_width; /* Processor duty cycle value bit width in P_CNT register */
245 u8 day_alarm; /* Index to day-of-month alarm in RTC CMOS RAM */
246 u8 month_alarm; /* Index to month-of-year alarm in RTC CMOS RAM */
247 u8 century; /* Index to century in RTC CMOS RAM */
248 u16 boot_flags; /* IA-PC Boot Architecture Flags (see below for individual flags) */
249 u8 reserved; /* Reserved, must be zero */
250 u32 flags; /* Miscellaneous flag bits (see below for individual flags) */
251 struct acpi_generic_address reset_register; /* 64-bit address of the Reset register */
252 u8 reset_value; /* Value to write to the reset_register port to reset the system */
253 u8 reserved4[3]; /* Reserved, must be zero */
254 u64 Xfacs; /* 64-bit physical address of FACS */
255 u64 Xdsdt; /* 64-bit physical address of DSDT */
256 struct acpi_generic_address xpm1a_event_block; /* 64-bit Extended Power Mgt 1a Event Reg Blk address */
257 struct acpi_generic_address xpm1b_event_block; /* 64-bit Extended Power Mgt 1b Event Reg Blk address */
258 struct acpi_generic_address xpm1a_control_block; /* 64-bit Extended Power Mgt 1a Control Reg Blk address */
259 struct acpi_generic_address xpm1b_control_block; /* 64-bit Extended Power Mgt 1b Control Reg Blk address */
260 struct acpi_generic_address xpm2_control_block; /* 64-bit Extended Power Mgt 2 Control Reg Blk address */
261 struct acpi_generic_address xpm_timer_block; /* 64-bit Extended Power Mgt Timer Ctrl Reg Blk address */
262 struct acpi_generic_address xgpe0_block; /* 64-bit Extended General Purpose Event 0 Reg Blk address */
263 struct acpi_generic_address xgpe1_block; /* 64-bit Extended General Purpose Event 1 Reg Blk address */
264 struct acpi_generic_address sleep_control; /* 64-bit Sleep Control register (ACPI 5.0) */
265 struct acpi_generic_address sleep_status; /* 64-bit Sleep Status register (ACPI 5.0) */
268 /* Masks for FADT Boot Architecture Flags (boot_flags) [Vx]=Introduced in this FADT revision */
270 #define ACPI_FADT_LEGACY_DEVICES (1) /* 00: [V2] System has LPC or ISA bus devices */
271 #define ACPI_FADT_8042 (1<<1) /* 01: [V3] System has an 8042 controller on port 60/64 */
272 #define ACPI_FADT_NO_VGA (1<<2) /* 02: [V4] It is not safe to probe for VGA hardware */
273 #define ACPI_FADT_NO_MSI (1<<3) /* 03: [V4] Message Signaled Interrupts (MSI) must not be enabled */
274 #define ACPI_FADT_NO_ASPM (1<<4) /* 04: [V4] PCIe ASPM control must not be enabled */
275 #define ACPI_FADT_NO_CMOS_RTC (1<<5) /* 05: [V5] No CMOS real-time clock present */
277 #define FADT2_REVISION_ID 3
279 /* Masks for FADT flags */
281 #define ACPI_FADT_WBINVD (1) /* 00: [V1] The WBINVD instruction works properly */
282 #define ACPI_FADT_WBINVD_FLUSH (1<<1) /* 01: [V1] WBINVD flushes but does not invalidate caches */
283 #define ACPI_FADT_C1_SUPPORTED (1<<2) /* 02: [V1] All processors support C1 state */
284 #define ACPI_FADT_C2_MP_SUPPORTED (1<<3) /* 03: [V1] C2 state works on MP system */
285 #define ACPI_FADT_POWER_BUTTON (1<<4) /* 04: [V1] Power button is handled as a control method device */
286 #define ACPI_FADT_SLEEP_BUTTON (1<<5) /* 05: [V1] Sleep button is handled as a control method device */
287 #define ACPI_FADT_FIXED_RTC (1<<6) /* 06: [V1] RTC wakeup status is not in fixed register space */
288 #define ACPI_FADT_S4_RTC_WAKE (1<<7) /* 07: [V1] RTC alarm can wake system from S4 */
289 #define ACPI_FADT_32BIT_TIMER (1<<8) /* 08: [V1] ACPI timer width is 32-bit (0=24-bit) */
290 #define ACPI_FADT_DOCKING_SUPPORTED (1<<9) /* 09: [V1] Docking supported */
291 #define ACPI_FADT_RESET_REGISTER (1<<10) /* 10: [V2] System reset via the FADT RESET_REG supported */
292 #define ACPI_FADT_SEALED_CASE (1<<11) /* 11: [V3] No internal expansion capabilities and case is sealed */
293 #define ACPI_FADT_HEADLESS (1<<12) /* 12: [V3] No local video capabilities or local input devices */
294 #define ACPI_FADT_SLEEP_TYPE (1<<13) /* 13: [V3] Must execute native instruction after writing SLP_TYPx register */
295 #define ACPI_FADT_PCI_EXPRESS_WAKE (1<<14) /* 14: [V4] System supports PCIEXP_WAKE (STS/EN) bits (ACPI 3.0) */
296 #define ACPI_FADT_PLATFORM_CLOCK (1<<15) /* 15: [V4] OSPM should use platform-provided timer (ACPI 3.0) */
297 #define ACPI_FADT_S4_RTC_VALID (1<<16) /* 16: [V4] Contents of RTC_STS valid after S4 wake (ACPI 3.0) */
298 #define ACPI_FADT_REMOTE_POWER_ON (1<<17) /* 17: [V4] System is compatible with remote power on (ACPI 3.0) */
299 #define ACPI_FADT_APIC_CLUSTER (1<<18) /* 18: [V4] All local APICs must use cluster model (ACPI 3.0) */
300 #define ACPI_FADT_APIC_PHYSICAL (1<<19) /* 19: [V4] All local xAPICs must use physical dest mode (ACPI 3.0) */
301 #define ACPI_FADT_HW_REDUCED (1<<20) /* 20: [V5] ACPI hardware is not implemented (ACPI 5.0) */
302 #define ACPI_FADT_LOW_POWER_S0 (1<<21) /* 21: [V5] S0 power savings are equal or better than S3 (ACPI 5.0) */
304 /* Values for preferred_profile (Preferred Power Management Profiles) */
306 enum acpi_preferred_pm_profiles {
311 PM_ENTERPRISE_SERVER = 4,
314 PM_PERFORMANCE_SERVER = 7,
318 /* Values for sleep_status and sleep_control registers (V5 FADT) */
320 #define ACPI_X_WAKE_STATUS 0x80
321 #define ACPI_X_SLEEP_TYPE_MASK 0x1C
322 #define ACPI_X_SLEEP_TYPE_POSITION 0x02
323 #define ACPI_X_SLEEP_ENABLE 0x20
325 /* Reset to default packing */
330 * Internal table-related structures
332 union acpi_name_union {
337 /* Internal ACPI Table Descriptor. One per ACPI table. */
339 struct acpi_table_desc {
340 acpi_physical_address address;
341 struct acpi_table_header *pointer;
342 u32 length; /* Length fixed at 32 bits (fixed in table header) */
343 union acpi_name_union signature;
344 acpi_owner_id owner_id;
348 /* Masks for Flags field above */
350 #define ACPI_TABLE_ORIGIN_UNKNOWN (0)
351 #define ACPI_TABLE_ORIGIN_MAPPED (1)
352 #define ACPI_TABLE_ORIGIN_ALLOCATED (2)
353 #define ACPI_TABLE_ORIGIN_OVERRIDE (4)
354 #define ACPI_TABLE_ORIGIN_MASK (7)
355 #define ACPI_TABLE_IS_LOADED (8)
358 * Get the remaining ACPI tables
360 #include <acpi/actbl1.h>
361 #include <acpi/actbl2.h>
362 #include <acpi/actbl3.h>
364 /* Macros used to generate offsets to specific table fields */
366 #define ACPI_FADT_OFFSET(f) (u16) ACPI_OFFSET (struct acpi_table_fadt, f)
369 * Sizes of the various flavors of FADT. We need to look closely
370 * at the FADT length because the version number essentially tells
371 * us nothing because of many BIOS bugs where the version does not
372 * match the expected length. In other words, the length of the
373 * FADT is the bottom line as to what the version really is.
375 * For reference, the values below are as follows:
376 * FADT V1 size: 0x074
377 * FADT V2 size: 0x084
378 * FADT V3 size: 0x0F4
379 * FADT V4 size: 0x0F4
380 * FADT V5 size: 0x10C
382 #define ACPI_FADT_V1_SIZE (u32) (ACPI_FADT_OFFSET (flags) + 4)
383 #define ACPI_FADT_V2_SIZE (u32) (ACPI_FADT_OFFSET (reserved4[0]) + 3)
384 #define ACPI_FADT_V3_SIZE (u32) (ACPI_FADT_OFFSET (sleep_control))
385 #define ACPI_FADT_V5_SIZE (u32) (sizeof (struct acpi_table_fadt))
387 #endif /* __ACTBL_H__ */