1 /******************************************************************************
3 * Module Name: utglobal - Global variables for the ACPI subsystem
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2008, Intel Corp.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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.
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
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41 * POSSIBILITY OF SUCH DAMAGES.
44 #define DEFINE_ACPI_GLOBALS
46 #include <acpi/acpi.h>
50 #define _COMPONENT ACPI_UTILITIES
51 ACPI_MODULE_NAME("utglobal")
53 /*******************************************************************************
55 * Static global variable initialization.
57 ******************************************************************************/
59 * We want the debug switches statically initialized so they
60 * are already set when the debugger is entered.
62 /* Debug switch - level and trace mask */
63 u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT;
65 /* Debug switch - layer (component) mask */
67 u32 acpi_dbg_layer = 0;
68 u32 acpi_gbl_nesting_level = 0;
70 /* Debugger globals */
72 u8 acpi_gbl_db_terminate_threads = FALSE;
73 u8 acpi_gbl_abort_method = FALSE;
74 u8 acpi_gbl_method_executing = FALSE;
78 u32 acpi_gbl_startup_flags = 0;
80 /* System starts uninitialized */
82 u8 acpi_gbl_shutdown = TRUE;
84 const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
93 const char *acpi_gbl_lowest_dstate_names[ACPI_NUM_sx_w_METHODS] = {
101 const char *acpi_gbl_highest_dstate_names[ACPI_NUM_sx_d_METHODS] = {
108 /*******************************************************************************
110 * FUNCTION: acpi_format_exception
112 * PARAMETERS: Status - The acpi_status code to be formatted
114 * RETURN: A string containing the exception text. A valid pointer is
117 * DESCRIPTION: This function translates an ACPI exception into an ASCII string
118 * It is here instead of utxface.c so it is always present.
120 ******************************************************************************/
122 const char *acpi_format_exception(acpi_status status)
124 const char *exception = NULL;
126 ACPI_FUNCTION_ENTRY();
128 exception = acpi_ut_validate_exception(status);
131 /* Exception code was not recognized */
134 "Unknown exception code: 0x%8.8X", status));
136 exception = "UNKNOWN_STATUS_CODE";
140 return (ACPI_CAST_PTR(const char, exception));
143 ACPI_EXPORT_SYMBOL(acpi_format_exception)
145 /*******************************************************************************
149 ******************************************************************************/
151 * Predefined ACPI Names (Built-in to the Interpreter)
154 * 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
155 * during the initialization sequence.
156 * 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
157 * perform a Notify() operation on it.
159 const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
160 {"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL},
161 {"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL},
162 {"_SB_", ACPI_TYPE_DEVICE, NULL},
163 {"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
164 {"_TZ_", ACPI_TYPE_THERMAL, NULL},
165 {"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
166 {"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
167 {"_GL_", ACPI_TYPE_MUTEX, (char *)1},
169 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
170 {"_OSI", ACPI_TYPE_METHOD, (char *)1},
173 /* Table terminator */
175 {NULL, ACPI_TYPE_ANY, NULL}
179 * Properties of the ACPI Object Types, both internal and external.
180 * The table is indexed by values of acpi_object_type
182 const u8 acpi_gbl_ns_properties[] = {
183 ACPI_NS_NORMAL, /* 00 Any */
184 ACPI_NS_NORMAL, /* 01 Number */
185 ACPI_NS_NORMAL, /* 02 String */
186 ACPI_NS_NORMAL, /* 03 Buffer */
187 ACPI_NS_NORMAL, /* 04 Package */
188 ACPI_NS_NORMAL, /* 05 field_unit */
189 ACPI_NS_NEWSCOPE, /* 06 Device */
190 ACPI_NS_NORMAL, /* 07 Event */
191 ACPI_NS_NEWSCOPE, /* 08 Method */
192 ACPI_NS_NORMAL, /* 09 Mutex */
193 ACPI_NS_NORMAL, /* 10 Region */
194 ACPI_NS_NEWSCOPE, /* 11 Power */
195 ACPI_NS_NEWSCOPE, /* 12 Processor */
196 ACPI_NS_NEWSCOPE, /* 13 Thermal */
197 ACPI_NS_NORMAL, /* 14 buffer_field */
198 ACPI_NS_NORMAL, /* 15 ddb_handle */
199 ACPI_NS_NORMAL, /* 16 Debug Object */
200 ACPI_NS_NORMAL, /* 17 def_field */
201 ACPI_NS_NORMAL, /* 18 bank_field */
202 ACPI_NS_NORMAL, /* 19 index_field */
203 ACPI_NS_NORMAL, /* 20 Reference */
204 ACPI_NS_NORMAL, /* 21 Alias */
205 ACPI_NS_NORMAL, /* 22 method_alias */
206 ACPI_NS_NORMAL, /* 23 Notify */
207 ACPI_NS_NORMAL, /* 24 Address Handler */
208 ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 25 Resource Desc */
209 ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 26 Resource Field */
210 ACPI_NS_NEWSCOPE, /* 27 Scope */
211 ACPI_NS_NORMAL, /* 28 Extra */
212 ACPI_NS_NORMAL, /* 29 Data */
213 ACPI_NS_NORMAL /* 30 Invalid */
216 /* Hex to ASCII conversion table */
218 static const char acpi_gbl_hex_to_ascii[] = {
219 '0', '1', '2', '3', '4', '5', '6', '7',
220 '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
223 /*******************************************************************************
225 * FUNCTION: acpi_ut_hex_to_ascii_char
227 * PARAMETERS: Integer - Contains the hex digit
228 * Position - bit position of the digit within the
229 * integer (multiple of 4)
231 * RETURN: The converted Ascii character
233 * DESCRIPTION: Convert a hex digit to an Ascii character
235 ******************************************************************************/
237 char acpi_ut_hex_to_ascii_char(acpi_integer integer, u32 position)
240 return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
243 /******************************************************************************
245 * Event and Hardware globals
247 ******************************************************************************/
249 struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = {
250 /* Name Parent Register Register Bit Position Register Bit Mask */
252 /* ACPI_BITREG_TIMER_STATUS */ {ACPI_REGISTER_PM1_STATUS,
253 ACPI_BITPOSITION_TIMER_STATUS,
254 ACPI_BITMASK_TIMER_STATUS},
255 /* ACPI_BITREG_BUS_MASTER_STATUS */ {ACPI_REGISTER_PM1_STATUS,
256 ACPI_BITPOSITION_BUS_MASTER_STATUS,
257 ACPI_BITMASK_BUS_MASTER_STATUS},
258 /* ACPI_BITREG_GLOBAL_LOCK_STATUS */ {ACPI_REGISTER_PM1_STATUS,
259 ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,
260 ACPI_BITMASK_GLOBAL_LOCK_STATUS},
261 /* ACPI_BITREG_POWER_BUTTON_STATUS */ {ACPI_REGISTER_PM1_STATUS,
262 ACPI_BITPOSITION_POWER_BUTTON_STATUS,
263 ACPI_BITMASK_POWER_BUTTON_STATUS},
264 /* ACPI_BITREG_SLEEP_BUTTON_STATUS */ {ACPI_REGISTER_PM1_STATUS,
265 ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,
266 ACPI_BITMASK_SLEEP_BUTTON_STATUS},
267 /* ACPI_BITREG_RT_CLOCK_STATUS */ {ACPI_REGISTER_PM1_STATUS,
268 ACPI_BITPOSITION_RT_CLOCK_STATUS,
269 ACPI_BITMASK_RT_CLOCK_STATUS},
270 /* ACPI_BITREG_WAKE_STATUS */ {ACPI_REGISTER_PM1_STATUS,
271 ACPI_BITPOSITION_WAKE_STATUS,
272 ACPI_BITMASK_WAKE_STATUS},
273 /* ACPI_BITREG_PCIEXP_WAKE_STATUS */ {ACPI_REGISTER_PM1_STATUS,
274 ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,
275 ACPI_BITMASK_PCIEXP_WAKE_STATUS},
277 /* ACPI_BITREG_TIMER_ENABLE */ {ACPI_REGISTER_PM1_ENABLE,
278 ACPI_BITPOSITION_TIMER_ENABLE,
279 ACPI_BITMASK_TIMER_ENABLE},
280 /* ACPI_BITREG_GLOBAL_LOCK_ENABLE */ {ACPI_REGISTER_PM1_ENABLE,
281 ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,
282 ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
283 /* ACPI_BITREG_POWER_BUTTON_ENABLE */ {ACPI_REGISTER_PM1_ENABLE,
284 ACPI_BITPOSITION_POWER_BUTTON_ENABLE,
285 ACPI_BITMASK_POWER_BUTTON_ENABLE},
286 /* ACPI_BITREG_SLEEP_BUTTON_ENABLE */ {ACPI_REGISTER_PM1_ENABLE,
287 ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,
288 ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
289 /* ACPI_BITREG_RT_CLOCK_ENABLE */ {ACPI_REGISTER_PM1_ENABLE,
290 ACPI_BITPOSITION_RT_CLOCK_ENABLE,
291 ACPI_BITMASK_RT_CLOCK_ENABLE},
292 /* ACPI_BITREG_PCIEXP_WAKE_DISABLE */ {ACPI_REGISTER_PM1_ENABLE,
293 ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
294 ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
296 /* ACPI_BITREG_SCI_ENABLE */ {ACPI_REGISTER_PM1_CONTROL,
297 ACPI_BITPOSITION_SCI_ENABLE,
298 ACPI_BITMASK_SCI_ENABLE},
299 /* ACPI_BITREG_BUS_MASTER_RLD */ {ACPI_REGISTER_PM1_CONTROL,
300 ACPI_BITPOSITION_BUS_MASTER_RLD,
301 ACPI_BITMASK_BUS_MASTER_RLD},
302 /* ACPI_BITREG_GLOBAL_LOCK_RELEASE */ {ACPI_REGISTER_PM1_CONTROL,
303 ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,
304 ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
305 /* ACPI_BITREG_SLEEP_TYPE */ {ACPI_REGISTER_PM1_CONTROL,
306 ACPI_BITPOSITION_SLEEP_TYPE,
307 ACPI_BITMASK_SLEEP_TYPE},
308 /* ACPI_BITREG_SLEEP_ENABLE */ {ACPI_REGISTER_PM1_CONTROL,
309 ACPI_BITPOSITION_SLEEP_ENABLE,
310 ACPI_BITMASK_SLEEP_ENABLE},
312 /* ACPI_BITREG_ARB_DIS */ {ACPI_REGISTER_PM2_CONTROL,
313 ACPI_BITPOSITION_ARB_DISABLE,
314 ACPI_BITMASK_ARB_DISABLE}
317 struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = {
318 /* ACPI_EVENT_PMTIMER */ {ACPI_BITREG_TIMER_STATUS,
319 ACPI_BITREG_TIMER_ENABLE,
320 ACPI_BITMASK_TIMER_STATUS,
321 ACPI_BITMASK_TIMER_ENABLE},
322 /* ACPI_EVENT_GLOBAL */ {ACPI_BITREG_GLOBAL_LOCK_STATUS,
323 ACPI_BITREG_GLOBAL_LOCK_ENABLE,
324 ACPI_BITMASK_GLOBAL_LOCK_STATUS,
325 ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
326 /* ACPI_EVENT_POWER_BUTTON */ {ACPI_BITREG_POWER_BUTTON_STATUS,
327 ACPI_BITREG_POWER_BUTTON_ENABLE,
328 ACPI_BITMASK_POWER_BUTTON_STATUS,
329 ACPI_BITMASK_POWER_BUTTON_ENABLE},
330 /* ACPI_EVENT_SLEEP_BUTTON */ {ACPI_BITREG_SLEEP_BUTTON_STATUS,
331 ACPI_BITREG_SLEEP_BUTTON_ENABLE,
332 ACPI_BITMASK_SLEEP_BUTTON_STATUS,
333 ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
334 /* ACPI_EVENT_RTC */ {ACPI_BITREG_RT_CLOCK_STATUS,
335 ACPI_BITREG_RT_CLOCK_ENABLE,
336 ACPI_BITMASK_RT_CLOCK_STATUS,
337 ACPI_BITMASK_RT_CLOCK_ENABLE},
340 /*******************************************************************************
342 * FUNCTION: acpi_ut_get_region_name
348 * DESCRIPTION: Translate a Space ID into a name string (Debug only)
350 ******************************************************************************/
352 /* Region type decoding */
354 const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
366 char *acpi_ut_get_region_name(u8 space_id)
369 if (space_id >= ACPI_USER_REGION_BEGIN) {
370 return ("UserDefinedRegion");
371 } else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) {
372 return ("InvalidSpaceId");
375 return (ACPI_CAST_PTR(char, acpi_gbl_region_types[space_id]));
378 /*******************************************************************************
380 * FUNCTION: acpi_ut_get_event_name
386 * DESCRIPTION: Translate a Event ID into a name string (Debug only)
388 ******************************************************************************/
390 /* Event type decoding */
392 static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = {
400 char *acpi_ut_get_event_name(u32 event_id)
403 if (event_id > ACPI_EVENT_MAX) {
404 return ("InvalidEventID");
407 return (ACPI_CAST_PTR(char, acpi_gbl_event_types[event_id]));
410 /*******************************************************************************
412 * FUNCTION: acpi_ut_get_type_name
418 * DESCRIPTION: Translate a Type ID into a name string (Debug only)
420 ******************************************************************************/
423 * Elements of acpi_gbl_ns_type_names below must match
424 * one-to-one with values of acpi_object_type
426 * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
427 * when stored in a table it really means that we have thus far seen no
428 * evidence to indicate what type is actually going to be stored for this entry.
430 static const char acpi_gbl_bad_type[] = "UNDEFINED";
432 /* Printable names of the ACPI object types */
434 static const char *acpi_gbl_ns_type_names[] = {
440 /* 05 */ "FieldUnit",
447 /* 12 */ "Processor",
449 /* 14 */ "BufferField",
450 /* 15 */ "DdbHandle",
451 /* 16 */ "DebugObject",
452 /* 17 */ "RegionField",
453 /* 18 */ "BankField",
454 /* 19 */ "IndexField",
455 /* 20 */ "Reference",
457 /* 22 */ "MethodAlias",
459 /* 24 */ "AddrHandler",
460 /* 25 */ "ResourceDesc",
461 /* 26 */ "ResourceFld",
468 char *acpi_ut_get_type_name(acpi_object_type type)
471 if (type > ACPI_TYPE_INVALID) {
472 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
475 return (ACPI_CAST_PTR(char, acpi_gbl_ns_type_names[type]));
478 char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
482 return ("[NULL Object Descriptor]");
485 return (acpi_ut_get_type_name(obj_desc->common.type));
488 /*******************************************************************************
490 * FUNCTION: acpi_ut_get_node_name
492 * PARAMETERS: Object - A namespace node
494 * RETURN: Pointer to a string
496 * DESCRIPTION: Validate the node and return the node's ACPI name.
498 ******************************************************************************/
500 char *acpi_ut_get_node_name(void *object)
502 struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;
504 /* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */
510 /* Check for Root node */
512 if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) {
516 /* Descriptor must be a namespace node */
518 if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
522 /* Name must be a valid ACPI name */
524 if (!acpi_ut_valid_acpi_name(node->name.integer)) {
525 node->name.integer = acpi_ut_repair_name(node->name.ascii);
528 /* Return the name */
530 return (node->name.ascii);
533 /*******************************************************************************
535 * FUNCTION: acpi_ut_get_descriptor_name
537 * PARAMETERS: Object - An ACPI object
539 * RETURN: Pointer to a string
541 * DESCRIPTION: Validate object and return the descriptor type
543 ******************************************************************************/
545 /* Printable names of object descriptor types */
547 static const char *acpi_gbl_desc_type_names[] = {
550 /* 02 */ "State-Generic",
551 /* 03 */ "State-Update",
552 /* 04 */ "State-Package",
553 /* 05 */ "State-Control",
554 /* 06 */ "State-RootParseScope",
555 /* 07 */ "State-ParseScope",
556 /* 08 */ "State-WalkScope",
557 /* 09 */ "State-Result",
558 /* 10 */ "State-Notify",
559 /* 11 */ "State-Thread",
566 char *acpi_ut_get_descriptor_name(void *object)
570 return ("NULL OBJECT");
573 if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) {
574 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
577 return (ACPI_CAST_PTR(char,
578 acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE
583 /*******************************************************************************
585 * FUNCTION: acpi_ut_get_reference_name
587 * PARAMETERS: Object - An ACPI reference object
589 * RETURN: Pointer to a string
591 * DESCRIPTION: Decode a reference object sub-type to a string.
593 ******************************************************************************/
595 /* Printable names of reference object sub-types */
597 static const char *acpi_gbl_ref_class_names[] = {
602 /* 04 */ "DdbHandle",
603 /* 05 */ "Named Object",
607 const char *acpi_ut_get_reference_name(union acpi_operand_object *object)
610 return "NULL Object";
612 if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND)
613 return "Not an Operand object";
615 if (object->common.type != ACPI_TYPE_LOCAL_REFERENCE)
616 return "Not a Reference object";
618 if (object->reference.class > ACPI_REFCLASS_MAX)
619 return "Unknown Reference class";
621 return acpi_gbl_ref_class_names[object->reference.class];
624 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
626 * Strings and procedures used for debug only
629 /*******************************************************************************
631 * FUNCTION: acpi_ut_get_mutex_name
633 * PARAMETERS: mutex_id - The predefined ID for this mutex.
635 * RETURN: String containing the name of the mutex. Always returns a valid
638 * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
640 ******************************************************************************/
642 char *acpi_ut_get_mutex_name(u32 mutex_id)
645 if (mutex_id > ACPI_MAX_MUTEX) {
646 return ("Invalid Mutex ID");
649 return (acpi_gbl_mutex_names[mutex_id]);
652 /*******************************************************************************
654 * FUNCTION: acpi_ut_get_notify_name
656 * PARAMETERS: notify_value - Value from the Notify() request
658 * RETURN: String corresponding to the Notify Value.
660 * DESCRIPTION: Translate a Notify Value to a notify namestring.
662 ******************************************************************************/
664 /* Names for Notify() values, used for debug output */
666 static const char *acpi_gbl_notify_value_names[] = {
671 "Device Check Light",
672 "Frequency Mismatch",
675 "Capabilities Check",
678 "System Locality Update"
681 const char *acpi_ut_get_notify_name(u32 notify_value)
684 if (notify_value <= ACPI_NOTIFY_MAX) {
685 return (acpi_gbl_notify_value_names[notify_value]);
686 } else if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
688 } else { /* Greater or equal to 0x80 */
690 return ("**Device Specific**");
695 /*******************************************************************************
697 * FUNCTION: acpi_ut_valid_object_type
699 * PARAMETERS: Type - Object type to be validated
701 * RETURN: TRUE if valid object type, FALSE otherwise
703 * DESCRIPTION: Validate an object type
705 ******************************************************************************/
707 u8 acpi_ut_valid_object_type(acpi_object_type type)
710 if (type > ACPI_TYPE_LOCAL_MAX) {
712 /* Note: Assumes all TYPEs are contiguous (external/local) */
720 /*******************************************************************************
722 * FUNCTION: acpi_ut_init_globals
728 * DESCRIPTION: Init library globals. All globals that require specific
729 * initialization should be initialized here!
731 ******************************************************************************/
733 acpi_status acpi_ut_init_globals(void)
738 ACPI_FUNCTION_TRACE(ut_init_globals);
740 /* Create all memory caches */
742 status = acpi_ut_create_caches();
743 if (ACPI_FAILURE(status)) {
744 return_ACPI_STATUS(status);
747 /* Mutex locked flags */
749 for (i = 0; i < ACPI_NUM_MUTEX; i++) {
750 acpi_gbl_mutex_info[i].mutex = NULL;
751 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
752 acpi_gbl_mutex_info[i].use_count = 0;
755 for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
756 acpi_gbl_owner_id_mask[i] = 0;
759 /* Last owner_iD is never valid */
761 acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;
765 acpi_gbl_gpe_xrupt_list_head = NULL;
766 acpi_gbl_gpe_fadt_blocks[0] = NULL;
767 acpi_gbl_gpe_fadt_blocks[1] = NULL;
768 acpi_current_gpe_count = 0;
770 /* Global handlers */
772 acpi_gbl_system_notify.handler = NULL;
773 acpi_gbl_device_notify.handler = NULL;
774 acpi_gbl_exception_handler = NULL;
775 acpi_gbl_init_handler = NULL;
776 acpi_gbl_table_handler = NULL;
778 /* Global Lock support */
780 acpi_gbl_global_lock_semaphore = NULL;
781 acpi_gbl_global_lock_mutex = NULL;
782 acpi_gbl_global_lock_acquired = FALSE;
783 acpi_gbl_global_lock_handle = 0;
784 acpi_gbl_global_lock_present = FALSE;
786 /* Miscellaneous variables */
788 acpi_gbl_cm_single_step = FALSE;
789 acpi_gbl_db_terminate_threads = FALSE;
790 acpi_gbl_shutdown = FALSE;
791 acpi_gbl_ns_lookup_count = 0;
792 acpi_gbl_ps_find_count = 0;
793 acpi_gbl_acpi_hardware_present = TRUE;
794 acpi_gbl_last_owner_id_index = 0;
795 acpi_gbl_next_owner_id_offset = 0;
796 acpi_gbl_trace_method_name = 0;
797 acpi_gbl_trace_dbg_level = 0;
798 acpi_gbl_trace_dbg_layer = 0;
799 acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
800 acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
801 acpi_gbl_osi_data = 0;
803 /* Hardware oriented */
805 acpi_gbl_events_initialized = FALSE;
806 acpi_gbl_system_awake_and_running = TRUE;
810 acpi_gbl_root_node = NULL;
811 acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
812 acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
813 acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
814 acpi_gbl_root_node_struct.child = NULL;
815 acpi_gbl_root_node_struct.peer = NULL;
816 acpi_gbl_root_node_struct.object = NULL;
817 acpi_gbl_root_node_struct.flags = ANOBJ_END_OF_PEER_LIST;
819 #ifdef ACPI_DEBUG_OUTPUT
820 acpi_gbl_lowest_stack_pointer = ACPI_CAST_PTR(acpi_size, ACPI_SIZE_MAX);
823 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
824 acpi_gbl_display_final_mem_stats = FALSE;
827 return_ACPI_STATUS(AE_OK);
830 ACPI_EXPORT_SYMBOL(acpi_gbl_FADT)
831 ACPI_EXPORT_SYMBOL(acpi_dbg_level)
832 ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
833 ACPI_EXPORT_SYMBOL(acpi_current_gpe_count)