1 /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
2 /******************************************************************************
4 * Name: acconfig.h - Global configuration constants
6 * Copyright (C) 2000 - 2023, Intel Corp.
8 *****************************************************************************/
13 /******************************************************************************
15 * Configuration options
17 *****************************************************************************/
20 * ACPI_DEBUG_OUTPUT - This switch enables all the debug facilities of the
21 * ACPI subsystem. This includes the DEBUG_PRINT output
22 * statements. When disabled, all DEBUG_PRINT
23 * statements are compiled out.
25 * ACPI_APPLICATION - Use this switch if the subsystem is going to be run
26 * at the application level.
31 * OS name, used for the _OS object. The _OS object is essentially obsolete,
32 * but there is a large base of ASL/AML code in existing machines that check
33 * for the string below. The use of this string usually guarantees that
34 * the ASL will execute down the most tested code path. Also, there is some
35 * code that will not execute the _OSI method unless _OS matches the string
36 * below. Therefore, change this string at your own risk.
38 #define ACPI_OS_NAME "Microsoft Windows NT"
40 /* Maximum objects in the various object caches */
42 #define ACPI_MAX_STATE_CACHE_DEPTH 96 /* State objects */
43 #define ACPI_MAX_PARSE_CACHE_DEPTH 96 /* Parse tree objects */
44 #define ACPI_MAX_EXTPARSE_CACHE_DEPTH 96 /* Parse tree objects */
45 #define ACPI_MAX_OBJECT_CACHE_DEPTH 96 /* Interpreter operand objects */
46 #define ACPI_MAX_NAMESPACE_CACHE_DEPTH 96 /* Namespace objects */
47 #define ACPI_MAX_COMMENT_CACHE_DEPTH 96 /* Comments for the -ca option */
50 * Should the subsystem abort the loading of an ACPI table if the
51 * table checksum is incorrect?
53 #ifndef ACPI_CHECKSUM_ABORT
54 #define ACPI_CHECKSUM_ABORT FALSE
58 * Generate a version of ACPICA that only supports "reduced hardware"
59 * platforms (as defined in ACPI 5.0). Set to TRUE to generate a specialized
60 * version of ACPICA that ONLY supports the ACPI 5.0 "reduced hardware"
61 * model. In other words, no ACPI hardware is supported.
63 * If TRUE, this means no support for the following:
64 * PM Event and Control registers
65 * SCI interrupt (and handler)
67 * General Purpose Events (GPEs)
70 * FACS table (Waking vectors and Global Lock)
72 #ifndef ACPI_REDUCED_HARDWARE
73 #define ACPI_REDUCED_HARDWARE FALSE
76 /******************************************************************************
80 *****************************************************************************/
82 /* Version of ACPI supported */
84 #define ACPI_CA_SUPPORT_LEVEL 5
86 /* Maximum count for a semaphore object */
88 #define ACPI_MAX_SEMAPHORE_COUNT 256
90 /* Maximum object reference count (detects object deletion issues) */
92 #define ACPI_MAX_REFERENCE_COUNT 0x4000
94 /* Default page size for use in mapping memory for operation regions */
96 #define ACPI_DEFAULT_PAGE_SIZE 4096 /* Must be power of 2 */
98 /* owner_id tracking. 128 entries allows for 4095 owner_ids */
100 #define ACPI_NUM_OWNERID_MASKS 128
102 /* Size of the root table array is increased by this increment */
104 #define ACPI_ROOT_TABLE_SIZE_INCREMENT 4
106 /* Maximum sleep allowed via Sleep() operator */
108 #define ACPI_MAX_SLEEP 2000 /* 2000 millisec == two seconds */
110 /* Address Range lists are per-space_id (Memory and I/O only) */
112 #define ACPI_ADDRESS_RANGE_MAX 2
114 /* Maximum time (default 30s) of While() loops before abort */
116 #define ACPI_MAX_LOOP_TIMEOUT 30
118 /******************************************************************************
120 * ACPI Specification constants (Do not change unless the specification changes)
122 *****************************************************************************/
124 /* Method info (in WALK_STATE), containing local variables and arguments */
126 #define ACPI_METHOD_NUM_LOCALS 8
127 #define ACPI_METHOD_MAX_LOCAL 7
129 #define ACPI_METHOD_NUM_ARGS 7
130 #define ACPI_METHOD_MAX_ARG 6
133 * Operand Stack (in WALK_STATE), Must be large enough to contain METHOD_MAX_ARG
135 #define ACPI_OBJ_NUM_OPERANDS 8
136 #define ACPI_OBJ_MAX_OPERAND 7
138 /* Number of elements in the Result Stack frame, can be an arbitrary value */
140 #define ACPI_RESULTS_FRAME_OBJ_NUM 8
143 * Maximal number of elements the Result Stack can contain,
144 * it may be an arbitrary value not exceeding the types of
145 * result_size and result_count (now u8).
147 #define ACPI_RESULTS_OBJ_NUM_MAX 255
149 /* Constants used in searching for the RSDP in low memory */
151 #define ACPI_EBDA_PTR_LOCATION 0x0000040E /* Physical Address */
152 #define ACPI_EBDA_PTR_LENGTH 2
153 #define ACPI_EBDA_WINDOW_SIZE 1024
154 #define ACPI_HI_RSDP_WINDOW_BASE 0x000E0000 /* Physical Address */
155 #define ACPI_HI_RSDP_WINDOW_SIZE 0x00020000
156 #define ACPI_RSDP_SCAN_STEP 16
158 /* Operation regions */
160 #define ACPI_USER_REGION_BEGIN 0x80
162 /* Maximum space_ids for Operation Regions */
164 #define ACPI_MAX_ADDRESS_SPACE 255
165 #define ACPI_NUM_DEFAULT_SPACES 4
167 /* Array sizes. Used for range checking also */
169 #define ACPI_MAX_MATCH_OPCODE 5
173 #define ACPI_RSDP_CHECKSUM_LENGTH 20
174 #define ACPI_RSDP_XCHECKSUM_LENGTH 36
177 * SMBus, GSBus and IPMI buffer sizes. All have a 2-byte header,
178 * containing both Status and Length.
180 #define ACPI_SERIAL_HEADER_SIZE 2 /* Common for below. Status and Length fields */
182 #define ACPI_SMBUS_DATA_SIZE 32
183 #define ACPI_SMBUS_BUFFER_SIZE ACPI_SERIAL_HEADER_SIZE + ACPI_SMBUS_DATA_SIZE
185 #define ACPI_IPMI_DATA_SIZE 64
186 #define ACPI_IPMI_BUFFER_SIZE ACPI_SERIAL_HEADER_SIZE + ACPI_IPMI_DATA_SIZE
188 #define ACPI_MAX_GSBUS_DATA_SIZE 255
189 #define ACPI_MAX_GSBUS_BUFFER_SIZE ACPI_SERIAL_HEADER_SIZE + ACPI_MAX_GSBUS_DATA_SIZE
191 #define ACPI_PRM_INPUT_BUFFER_SIZE 26
193 #define ACPI_FFH_INPUT_BUFFER_SIZE 256
195 /* _sx_d and _sx_w control methods */
197 #define ACPI_NUM_sx_d_METHODS 4
198 #define ACPI_NUM_sx_w_METHODS 5
200 /******************************************************************************
202 * Miscellaneous constants
204 *****************************************************************************/
208 #define UUID_BUFFER_LENGTH 16 /* Length of UUID in memory */
209 #define UUID_STRING_LENGTH 36 /* Total length of a UUID string */
211 /* Positions for required hyphens (dashes) in UUID strings */
213 #define UUID_HYPHEN1_OFFSET 8
214 #define UUID_HYPHEN2_OFFSET 13
215 #define UUID_HYPHEN3_OFFSET 18
216 #define UUID_HYPHEN4_OFFSET 23
218 /******************************************************************************
222 *****************************************************************************/
224 #define ACPI_DEBUGGER_MAX_ARGS ACPI_METHOD_NUM_ARGS + 4 /* Max command line arguments */
225 #define ACPI_DB_LINE_BUFFER_SIZE 512
227 #define ACPI_DEBUGGER_COMMAND_PROMPT '-'
228 #define ACPI_DEBUGGER_EXECUTE_PROMPT '%'
230 #endif /* _ACCONFIG_H */