1 /******************************************************************************
3 * Name: actbl.h - Basic ACPI Table Definitions
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2006, R. Byron Moore
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12 * modification, are permitted provided that the following conditions
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41 * POSSIBILITY OF SUCH DAMAGES.
48 * Values for description table header signatures. Useful because they make
49 * it more difficult to inadvertently type in the wrong signature.
51 #define DSDT_SIG "DSDT" /* Differentiated System Description Table */
52 #define FADT_SIG "FACP" /* Fixed ACPI Description Table */
53 #define FACS_SIG "FACS" /* Firmware ACPI Control Structure */
54 #define PSDT_SIG "PSDT" /* Persistent System Description Table */
55 #define RSDP_SIG "RSD PTR " /* Root System Description Pointer */
56 #define RSDT_SIG "RSDT" /* Root System Description Table */
57 #define XSDT_SIG "XSDT" /* Extended System Description Table */
58 #define SSDT_SIG "SSDT" /* Secondary System Description Table */
59 #define RSDP_NAME "RSDP"
62 * All tables and structures must be byte-packed to match the ACPI
63 * specification, since the tables are provided by the system BIOS
68 * These are the ACPI tables that are directly consumed by the subsystem.
70 * The RSDP and FACS do not use the common ACPI table header. All other ACPI
71 * tables use the header.
73 * Note about bitfields: The u8 type is used for bitfields in ACPI tables.
74 * This is the only type that is even remotely portable. Anything else is not
75 * portable, so do not use any other bitfield types.
78 /*******************************************************************************
80 * ACPI Table Header. This common header is used by all tables except the
81 * RSDP and FACS. The define is used for direct inclusion of header into
84 ******************************************************************************/
86 #define ACPI_TABLE_HEADER_DEF \
87 char signature[4]; /* ASCII table signature */\
88 u32 length; /* Length of table in bytes, including this header */\
89 u8 revision; /* ACPI Specification minor version # */\
90 u8 checksum; /* To make sum of entire table == 0 */\
91 char oem_id[6]; /* ASCII OEM identification */\
92 char oem_table_id[8]; /* ASCII OEM table identification */\
93 u32 oem_revision; /* OEM revision number */\
94 char asl_compiler_id[4]; /* ASCII ASL compiler vendor ID */\
95 u32 asl_compiler_revision; /* ASL compiler version */
97 struct acpi_table_header {
98 ACPI_TABLE_HEADER_DEF};
101 * GAS - Generic Address Structure (ACPI 2.0+)
103 struct acpi_generic_address {
104 u8 address_space_id; /* Address space where struct or register exists */
105 u8 register_bit_width; /* Size in bits of given register */
106 u8 register_bit_offset; /* Bit offset within the register */
107 u8 access_width; /* Minimum Access size (ACPI 3.0) */
108 u64 address; /* 64-bit address of struct or register */
111 /*******************************************************************************
113 * RSDP - Root System Description Pointer (Signature is "RSD PTR ")
115 ******************************************************************************/
117 struct rsdp_descriptor {
118 char signature[8]; /* ACPI signature, contains "RSD PTR " */
119 u8 checksum; /* ACPI 1.0 checksum */
120 char oem_id[6]; /* OEM identification */
121 u8 revision; /* Must be (0) for ACPI 1.0 or (2) for ACPI 2.0+ */
122 u32 rsdt_physical_address; /* 32-bit physical address of the RSDT */
123 u32 length; /* Table length in bytes, including header (ACPI 2.0+) */
124 u64 xsdt_physical_address; /* 64-bit physical address of the XSDT (ACPI 2.0+) */
125 u8 extended_checksum; /* Checksum of entire table (ACPI 2.0+) */
126 u8 reserved[3]; /* Reserved, must be zero */
129 #define ACPI_RSDP_REV0_SIZE 20 /* Size of original ACPI 1.0 RSDP */
131 /*******************************************************************************
133 * RSDT/XSDT - Root System Description Tables
135 ******************************************************************************/
137 struct rsdt_descriptor {
138 ACPI_TABLE_HEADER_DEF u32 table_offset_entry[1]; /* Array of pointers to ACPI tables */
141 struct xsdt_descriptor {
142 ACPI_TABLE_HEADER_DEF u64 table_offset_entry[1]; /* Array of pointers to ACPI tables */
145 /*******************************************************************************
147 * FACS - Firmware ACPI Control Structure (FACS)
149 ******************************************************************************/
151 struct facs_descriptor {
152 char signature[4]; /* ASCII table signature */
153 u32 length; /* Length of structure, in bytes */
154 u32 hardware_signature; /* Hardware configuration signature */
155 u32 firmware_waking_vector; /* 32-bit physical address of the Firmware Waking Vector */
156 u32 global_lock; /* Global Lock for shared hardware resources */
158 /* Flags (32 bits) */
160 u8 S4bios_f:1; /* 00: S4BIOS support is present */
161 u8:7; /* 01-07: Reserved, must be zero */
162 u8 reserved1[3]; /* 08-31: Reserved, must be zero */
164 u64 xfirmware_waking_vector; /* 64-bit version of the Firmware Waking Vector (ACPI 2.0+) */
165 u8 version; /* Version of this table (ACPI 2.0+) */
166 u8 reserved[31]; /* Reserved, must be zero */
169 #define ACPI_GLOCK_PENDING 0x01 /* 00: Pending global lock ownership */
170 #define ACPI_GLOCK_OWNED 0x02 /* 01: Global lock is owned */
173 * Common FACS - This is a version-independent FACS structure used for internal use only
175 struct acpi_common_facs {
177 u64 *firmware_waking_vector;
181 /*******************************************************************************
183 * FADT - Fixed ACPI Description Table (Signature "FACP")
185 ******************************************************************************/
187 /* Fields common to all versions of the FADT */
189 #define ACPI_FADT_COMMON \
190 ACPI_TABLE_HEADER_DEF \
191 u32 V1_firmware_ctrl; /* 32-bit physical address of FACS */ \
192 u32 V1_dsdt; /* 32-bit physical address of DSDT */ \
193 u8 reserved1; /* System Interrupt Model isn't used in ACPI 2.0*/ \
194 u8 prefer_PM_profile; /* Conveys preferred power management profile to OSPM. */ \
195 u16 sci_int; /* System vector of SCI interrupt */ \
196 u32 smi_cmd; /* Port address of SMI command port */ \
197 u8 acpi_enable; /* Value to write to smi_cmd to enable ACPI */ \
198 u8 acpi_disable; /* Value to write to smi_cmd to disable ACPI */ \
199 u8 S4bios_req; /* Value to write to SMI CMD to enter S4BIOS state */ \
200 u8 pstate_cnt; /* Processor performance state control*/ \
201 u32 V1_pm1a_evt_blk; /* Port address of Power Mgt 1a Event Reg Blk */ \
202 u32 V1_pm1b_evt_blk; /* Port address of Power Mgt 1b Event Reg Blk */ \
203 u32 V1_pm1a_cnt_blk; /* Port address of Power Mgt 1a Control Reg Blk */ \
204 u32 V1_pm1b_cnt_blk; /* Port address of Power Mgt 1b Control Reg Blk */ \
205 u32 V1_pm2_cnt_blk; /* Port address of Power Mgt 2 Control Reg Blk */ \
206 u32 V1_pm_tmr_blk; /* Port address of Power Mgt Timer Ctrl Reg Blk */ \
207 u32 V1_gpe0_blk; /* Port addr of General Purpose acpi_event 0 Reg Blk */ \
208 u32 V1_gpe1_blk; /* Port addr of General Purpose acpi_event 1 Reg Blk */ \
209 u8 pm1_evt_len; /* Byte Length of ports at pm1_x_evt_blk */ \
210 u8 pm1_cnt_len; /* Byte Length of ports at pm1_x_cnt_blk */ \
211 u8 pm2_cnt_len; /* Byte Length of ports at pm2_cnt_blk */ \
212 u8 pm_tm_len; /* Byte Length of ports at pm_tm_blk */ \
213 u8 gpe0_blk_len; /* Byte Length of ports at gpe0_blk */ \
214 u8 gpe1_blk_len; /* Byte Length of ports at gpe1_blk */ \
215 u8 gpe1_base; /* Offset in gpe model where gpe1 events start */ \
216 u8 cst_cnt; /* Support for the _CST object and C States change notification.*/ \
217 u16 plvl2_lat; /* Worst case HW latency to enter/exit C2 state */ \
218 u16 plvl3_lat; /* Worst case HW latency to enter/exit C3 state */ \
219 u16 flush_size; /* Processor's memory cache line width, in bytes */ \
220 u16 flush_stride; /* Number of flush strides that need to be read */ \
221 u8 duty_offset; /* Processor's duty cycle index in processor's P_CNT reg*/ \
222 u8 duty_width; /* Processor's duty cycle value bit width in P_CNT register.*/ \
223 u8 day_alrm; /* Index to day-of-month alarm in RTC CMOS RAM */ \
224 u8 mon_alrm; /* Index to month-of-year alarm in RTC CMOS RAM */ \
225 u8 century; /* Index to century in RTC CMOS RAM */ \
226 u16 iapc_boot_arch; /* IA-PC Boot Architecture Flags. See Table 5-10 for description*/ \
227 u8 reserved2; /* Reserved, must be zero */
232 struct fadt_descriptor {
234 /* Flags (32 bits) */
235 u8 wb_invd:1; /* 00: The wbinvd instruction works properly */
236 u8 wb_invd_flush:1; /* 01: The wbinvd flushes but does not invalidate */
237 u8 proc_c1:1; /* 02: All processors support C1 state */
238 u8 plvl2_up:1; /* 03: C2 state works on MP system */
239 u8 pwr_button:1; /* 04: Power button is handled as a generic feature */
240 u8 sleep_button:1; /* 05: Sleep button is handled as a generic feature, or not present */
241 u8 fixed_rTC:1; /* 06: RTC wakeup stat not in fixed register space */
242 u8 rtcs4:1; /* 07: RTC wakeup stat not possible from S4 */
243 u8 tmr_val_ext:1; /* 08: tmr_val is 32 bits 0=24-bits */
244 u8 dock_cap:1; /* 09: Docking supported */
245 u8 reset_reg_sup:1; /* 10: System reset via the FADT RESET_REG supported */
246 u8 sealed_case:1; /* 11: No internal expansion capabilities and case is sealed */
247 u8 headless:1; /* 12: No local video capabilities or local input devices */
248 u8 cpu_sw_sleep:1; /* 13: Must execute native instruction after writing SLP_TYPx register */
250 u8 pci_exp_wak:1; /* 14: System supports PCIEXP_WAKE (STS/EN) bits (ACPI 3.0) */
251 u8 use_platform_clock:1; /* 15: OSPM should use platform-provided timer (ACPI 3.0) */
252 u8 S4rtc_sts_valid:1; /* 16: Contents of RTC_STS valid after S4 wake (ACPI 3.0) */
253 u8 remote_power_on_capable:1; /* 17: System is compatible with remote power on (ACPI 3.0) */
254 u8 force_apic_cluster_model:1; /* 18: All local APICs must use cluster model (ACPI 3.0) */
255 u8 force_apic_physical_destination_mode:1; /* 19: All local x_aPICs must use physical dest mode (ACPI 3.0) */
256 u8:4; /* 20-23: Reserved, must be zero */
257 u8 reserved3; /* 24-31: Reserved, must be zero */
259 struct acpi_generic_address reset_register; /* Reset register address in GAS format */
260 u8 reset_value; /* Value to write to the reset_register port to reset the system */
261 u8 reserved4[3]; /* These three bytes must be zero */
262 u64 xfirmware_ctrl; /* 64-bit physical address of FACS */
263 u64 Xdsdt; /* 64-bit physical address of DSDT */
264 struct acpi_generic_address xpm1a_evt_blk; /* Extended Power Mgt 1a acpi_event Reg Blk address */
265 struct acpi_generic_address xpm1b_evt_blk; /* Extended Power Mgt 1b acpi_event Reg Blk address */
266 struct acpi_generic_address xpm1a_cnt_blk; /* Extended Power Mgt 1a Control Reg Blk address */
267 struct acpi_generic_address xpm1b_cnt_blk; /* Extended Power Mgt 1b Control Reg Blk address */
268 struct acpi_generic_address xpm2_cnt_blk; /* Extended Power Mgt 2 Control Reg Blk address */
269 struct acpi_generic_address xpm_tmr_blk; /* Extended Power Mgt Timer Ctrl Reg Blk address */
270 struct acpi_generic_address xgpe0_blk; /* Extended General Purpose acpi_event 0 Reg Blk address */
271 struct acpi_generic_address xgpe1_blk; /* Extended General Purpose acpi_event 1 Reg Blk address */
275 * "Down-revved" ACPI 2.0 FADT descriptor
276 * Defined here to allow compiler to generate the length of the struct
278 struct fadt_descriptor_rev2_minus {
279 ACPI_FADT_COMMON u32 flags;
280 struct acpi_generic_address reset_register; /* Reset register address in GAS format */
281 u8 reset_value; /* Value to write to the reset_register port to reset the system. */
282 u8 reserved7[3]; /* Reserved, must be zero */
287 * Defined here to allow compiler to generate the length of the struct
289 struct fadt_descriptor_rev1 {
290 ACPI_FADT_COMMON u32 flags;
293 /* FADT: Prefered Power Management Profiles */
295 #define PM_UNSPECIFIED 0
298 #define PM_WORKSTATION 3
299 #define PM_ENTERPRISE_SERVER 4
300 #define PM_SOHO_SERVER 5
301 #define PM_APPLIANCE_PC 6
303 /* FADT: Boot Arch Flags */
305 #define BAF_LEGACY_DEVICES 0x0001
306 #define BAF_8042_KEYBOARD_CONTROLLER 0x0002
308 #define FADT2_REVISION_ID 3
309 #define FADT2_MINUS_REVISION_ID 2
311 /* Reset to default packing */
316 * This macro is temporary until the table bitfield flag definitions
317 * are removed and replaced by a Flags field.
319 #define ACPI_FLAG_OFFSET(d,f,o) (u8) (ACPI_OFFSET (d,f) + \
320 sizeof(((d *)0)->f) + o)
322 * Get the remaining ACPI tables
327 * ACPI Table information. We save the table address, length,
328 * and type of memory allocation (mapped or allocated) for each
329 * table for 1) when we exit, and 2) if a new table is installed
331 #define ACPI_MEM_NOT_ALLOCATED 0
332 #define ACPI_MEM_ALLOCATED 1
333 #define ACPI_MEM_MAPPED 2
335 /* Definitions for the Flags bitfield member of struct acpi_table_support */
337 #define ACPI_TABLE_SINGLE 0x00
338 #define ACPI_TABLE_MULTIPLE 0x01
339 #define ACPI_TABLE_EXECUTABLE 0x02
341 #define ACPI_TABLE_ROOT 0x00
342 #define ACPI_TABLE_PRIMARY 0x10
343 #define ACPI_TABLE_SECONDARY 0x20
344 #define ACPI_TABLE_ALL 0x30
345 #define ACPI_TABLE_TYPE_MASK 0x30
347 /* Data about each known table type */
349 struct acpi_table_support {
357 extern u8 acpi_fadt_is_v1; /* is set to 1 if FADT is revision 1,
358 * needed for certain workarounds */
359 /* Macros used to generate offsets to specific table fields */
361 #define ACPI_FACS_OFFSET(f) (u8) ACPI_OFFSET (struct facs_descriptor,f)
362 #define ACPI_FADT_OFFSET(f) (u8) ACPI_OFFSET (struct fadt_descriptor, f)
363 #define ACPI_GAS_OFFSET(f) (u8) ACPI_OFFSET (struct acpi_generic_address,f)
364 #define ACPI_HDR_OFFSET(f) (u8) ACPI_OFFSET (struct acpi_table_header,f)
365 #define ACPI_RSDP_OFFSET(f) (u8) ACPI_OFFSET (struct rsdp_descriptor,f)
367 #define ACPI_FADT_FLAG_OFFSET(f,o) ACPI_FLAG_OFFSET (struct fadt_descriptor,f,o)
368 #define ACPI_FACS_FLAG_OFFSET(f,o) ACPI_FLAG_OFFSET (struct facs_descriptor,f,o)
370 #endif /* __ACTBL_H__ */