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 	struct acpi_generic_address sleep_control;	/* 64-bit Sleep Control register */
259 	struct acpi_generic_address sleep_status;	/* 64-bit Sleep Status register */
260 };
261 
262 /* Masks for FADT Boot Architecture Flags (boot_flags) */
263 
264 #define ACPI_FADT_LEGACY_DEVICES    (1)  	/* 00: [V2] System has LPC or ISA bus devices */
265 #define ACPI_FADT_8042              (1<<1)	/* 01: [V3] System has an 8042 controller on port 60/64 */
266 #define ACPI_FADT_NO_VGA            (1<<2)	/* 02: [V4] It is not safe to probe for VGA hardware */
267 #define ACPI_FADT_NO_MSI            (1<<3)	/* 03: [V4] Message Signaled Interrupts (MSI) must not be enabled */
268 #define ACPI_FADT_NO_ASPM           (1<<4)	/* 04: [V4] PCIe ASPM control must not be enabled */
269 #define ACPI_FADT_NO_CMOS_RTC       (1<<5)	/* 05: [V5] No CMOS real-time clock present */
270 
271 #define FADT2_REVISION_ID               3
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 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 x_aPICs 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_prefered_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 #define ACPI_FADT_OFFSET(f)             (u16) ACPI_OFFSET (struct acpi_table_fadt, f)
324 
325 /*
326  * Internal table-related structures
327  */
328 union acpi_name_union {
329 	u32 integer;
330 	char ascii[4];
331 };
332 
333 /* Internal ACPI Table Descriptor. One per ACPI table. */
334 
335 struct acpi_table_desc {
336 	acpi_physical_address address;
337 	struct acpi_table_header *pointer;
338 	u32 length;		/* Length fixed at 32 bits */
339 	union acpi_name_union signature;
340 	acpi_owner_id owner_id;
341 	u8 flags;
342 };
343 
344 /* Masks for Flags field above */
345 
346 #define ACPI_TABLE_ORIGIN_UNKNOWN       (0)
347 #define ACPI_TABLE_ORIGIN_MAPPED        (1)
348 #define ACPI_TABLE_ORIGIN_ALLOCATED     (2)
349 #define ACPI_TABLE_ORIGIN_OVERRIDE      (4)
350 #define ACPI_TABLE_ORIGIN_MASK          (7)
351 #define ACPI_TABLE_IS_LOADED            (8)
352 
353 /*
354  * Get the remaining ACPI tables
355  */
356 
357 #include <acpi/actbl1.h>
358 #include <acpi/actbl2.h>
359 #include <acpi/actbl3.h>
360 
361 /*
362  * Sizes of the various flavors of FADT. We need to look closely
363  * at the FADT length because the version number essentially tells
364  * us nothing because of many BIOS bugs where the version does not
365  * match the expected length. In other words, the length of the
366  * FADT is the bottom line as to what the version really is.
367  *
368  * For reference, the values below are as follows:
369  *     FADT V1  size: 0x074
370  *     FADT V2  size: 0x084
371  *     FADT V3  size: 0x0F4
372  *     FADT V4  size: 0x0F4
373  *     FADT V5  size: 0x10C
374  */
375 #define ACPI_FADT_V1_SIZE       (u32) (ACPI_FADT_OFFSET (flags) + 4)
376 #define ACPI_FADT_V2_SIZE       (u32) (ACPI_FADT_OFFSET (reserved4[0]) + 3)
377 #define ACPI_FADT_V3_SIZE       (u32) (ACPI_FADT_OFFSET (sleep_control))
378 #define ACPI_FADT_V5_SIZE       (u32) (sizeof (struct acpi_table_fadt))
379 
380 #endif				/* __ACTBL_H__ */
381