1 /******************************************************************************
3 * Name: acconfig.h - Global configuration constants
5 *****************************************************************************/
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47 /******************************************************************************
49 * Configuration options
51 *****************************************************************************/
54 * ACPI_DEBUG_OUTPUT - This switch enables all the debug facilities of the
55 * ACPI subsystem. This includes the DEBUG_PRINT output
56 * statements. When disabled, all DEBUG_PRINT
57 * statements are compiled out.
59 * ACPI_APPLICATION - Use this switch if the subsystem is going to be run
60 * at the application level.
65 * OS name, used for the _OS object. The _OS object is essentially obsolete,
66 * but there is a large base of ASL/AML code in existing machines that check
67 * for the string below. The use of this string usually guarantees that
68 * the ASL will execute down the most tested code path. Also, there is some
69 * code that will not execute the _OSI method unless _OS matches the string
70 * below. Therefore, change this string at your own risk.
72 #define ACPI_OS_NAME "Microsoft Windows NT"
74 /* Maximum objects in the various object caches */
76 #define ACPI_MAX_STATE_CACHE_DEPTH 96 /* State objects */
77 #define ACPI_MAX_PARSE_CACHE_DEPTH 96 /* Parse tree objects */
78 #define ACPI_MAX_EXTPARSE_CACHE_DEPTH 96 /* Parse tree objects */
79 #define ACPI_MAX_OBJECT_CACHE_DEPTH 96 /* Interpreter operand objects */
80 #define ACPI_MAX_NAMESPACE_CACHE_DEPTH 96 /* Namespace objects */
83 * Should the subsystem abort the loading of an ACPI table if the
84 * table checksum is incorrect?
86 #define ACPI_CHECKSUM_ABORT FALSE
88 /******************************************************************************
92 *****************************************************************************/
94 /* Version of ACPI supported */
96 #define ACPI_CA_SUPPORT_LEVEL 3
98 /* Maximum count for a semaphore object */
100 #define ACPI_MAX_SEMAPHORE_COUNT 256
102 /* Maximum object reference count (detects object deletion issues) */
104 #define ACPI_MAX_REFERENCE_COUNT 0x1000
106 /* Size of cached memory mapping for system memory operation region */
108 #define ACPI_SYSMEM_REGION_WINDOW_SIZE 4096
110 /* owner_id tracking. 8 entries allows for 255 owner_ids */
112 #define ACPI_NUM_OWNERID_MASKS 8
114 /* Size of the root table array is increased by this increment */
116 #define ACPI_ROOT_TABLE_SIZE_INCREMENT 4
118 /* Maximum number of While() loop iterations before forced abort */
120 #define ACPI_MAX_LOOP_ITERATIONS 0xFFFF
122 /******************************************************************************
124 * ACPI Specification constants (Do not change unless the specification changes)
126 *****************************************************************************/
128 /* Number of distinct GPE register blocks and register width */
130 #define ACPI_MAX_GPE_BLOCKS 2
131 #define ACPI_GPE_REGISTER_WIDTH 8
133 /* Method info (in WALK_STATE), containing local variables and argumetns */
135 #define ACPI_METHOD_NUM_LOCALS 8
136 #define ACPI_METHOD_MAX_LOCAL 7
138 #define ACPI_METHOD_NUM_ARGS 7
139 #define ACPI_METHOD_MAX_ARG 6
141 /* Length of _HID, _UID, _CID, and UUID values */
143 #define ACPI_DEVICE_ID_LENGTH 0x09
144 #define ACPI_MAX_CID_LENGTH 48
145 #define ACPI_UUID_LENGTH 16
148 * Operand Stack (in WALK_STATE), Must be large enough to contain METHOD_MAX_ARG
150 #define ACPI_OBJ_NUM_OPERANDS 8
151 #define ACPI_OBJ_MAX_OPERAND 7
153 /* Number of elements in the Result Stack frame, can be an arbitrary value */
155 #define ACPI_RESULTS_FRAME_OBJ_NUM 8
158 * Maximal number of elements the Result Stack can contain,
159 * it may be an arbitray value not exceeding the types of
160 * result_size and result_count (now u8).
162 #define ACPI_RESULTS_OBJ_NUM_MAX 255
164 /* Names within the namespace are 4 bytes long */
166 #define ACPI_NAME_SIZE 4
167 #define ACPI_PATH_SEGMENT_LENGTH 5 /* 4 chars for name + 1 char for separator */
168 #define ACPI_PATH_SEPARATOR '.'
170 /* Sizes for ACPI table headers */
172 #define ACPI_OEM_ID_SIZE 6
173 #define ACPI_OEM_TABLE_ID_SIZE 8
175 /* Constants used in searching for the RSDP in low memory */
177 #define ACPI_EBDA_PTR_LOCATION 0x0000040E /* Physical Address */
178 #define ACPI_EBDA_PTR_LENGTH 2
179 #define ACPI_EBDA_WINDOW_SIZE 1024
180 #define ACPI_HI_RSDP_WINDOW_BASE 0x000E0000 /* Physical Address */
181 #define ACPI_HI_RSDP_WINDOW_SIZE 0x00020000
182 #define ACPI_RSDP_SCAN_STEP 16
184 /* Operation regions */
186 #define ACPI_NUM_PREDEFINED_REGIONS 8
187 #define ACPI_USER_REGION_BEGIN 0x80
189 /* Maximum space_ids for Operation Regions */
191 #define ACPI_MAX_ADDRESS_SPACE 255
193 /* Array sizes. Used for range checking also */
195 #define ACPI_MAX_MATCH_OPCODE 5
199 #define ACPI_RSDP_CHECKSUM_LENGTH 20
200 #define ACPI_RSDP_XCHECKSUM_LENGTH 36
202 /* SMBus bidirectional buffer size */
204 #define ACPI_SMBUS_BUFFER_SIZE 34
206 /******************************************************************************
210 *****************************************************************************/
212 #define ACPI_DEBUGGER_MAX_ARGS 8 /* Must be max method args + 1 */
214 #define ACPI_DEBUGGER_COMMAND_PROMPT '-'
215 #define ACPI_DEBUGGER_EXECUTE_PROMPT '%'
217 #endif /* _ACCONFIG_H */