1/******************************************************************************
2 *
3 * Module Name: utglobal - Global variables for the ACPI subsystem
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2007, R. Byron Moore
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#define DEFINE_ACPI_GLOBALS
45
46#include <acpi/acpi.h>
47#include <acpi/acnamesp.h>
48
49ACPI_EXPORT_SYMBOL(acpi_gbl_FADT)
50#define _COMPONENT          ACPI_UTILITIES
51    ACPI_MODULE_NAME("utglobal")
52
53/*******************************************************************************
54 *
55 * Static global variable initialization.
56 *
57 ******************************************************************************/
58/*
59 * We want the debug switches statically initialized so they
60 * are already set when the debugger is entered.
61 */
62/* Debug switch - level and trace mask */
63u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT;
64
65/* Debug switch - layer (component) mask */
66
67u32 acpi_dbg_layer = ACPI_COMPONENT_DEFAULT | ACPI_ALL_DRIVERS;
68u32 acpi_gbl_nesting_level = 0;
69
70/* Debugger globals */
71
72u8 acpi_gbl_db_terminate_threads = FALSE;
73u8 acpi_gbl_abort_method = FALSE;
74u8 acpi_gbl_method_executing = FALSE;
75
76/* System flags */
77
78u32 acpi_gbl_startup_flags = 0;
79
80/* System starts uninitialized */
81
82u8 acpi_gbl_shutdown = TRUE;
83
84const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
85	"\\_S0_",
86	"\\_S1_",
87	"\\_S2_",
88	"\\_S3_",
89	"\\_S4_",
90	"\\_S5_"
91};
92
93const char *acpi_gbl_highest_dstate_names[4] = {
94	"_S1D",
95	"_S2D",
96	"_S3D",
97	"_S4D"
98};
99
100/*******************************************************************************
101 *
102 * FUNCTION:    acpi_format_exception
103 *
104 * PARAMETERS:  Status       - The acpi_status code to be formatted
105 *
106 * RETURN:      A string containing the exception text. A valid pointer is
107 *              always returned.
108 *
109 * DESCRIPTION: This function translates an ACPI exception into an ASCII string
110 *              It is here instead of utxface.c so it is always present.
111 *
112 ******************************************************************************/
113
114const char *acpi_format_exception(acpi_status status)
115{
116	const char *exception = NULL;
117
118	ACPI_FUNCTION_ENTRY();
119
120	exception = acpi_ut_validate_exception(status);
121	if (!exception) {
122
123		/* Exception code was not recognized */
124
125		ACPI_ERROR((AE_INFO,
126			    "Unknown exception code: 0x%8.8X", status));
127
128		exception = "UNKNOWN_STATUS_CODE";
129	}
130
131	return (ACPI_CAST_PTR(const char, exception));
132}
133
134ACPI_EXPORT_SYMBOL(acpi_format_exception)
135
136/*******************************************************************************
137 *
138 * Namespace globals
139 *
140 ******************************************************************************/
141/*
142 * Predefined ACPI Names (Built-in to the Interpreter)
143 *
144 * NOTES:
145 * 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
146 *    during the initialization sequence.
147 * 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
148 *    perform a Notify() operation on it.
149 */
150const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
151	{"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL},
152	{"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL},
153	{"_SB_", ACPI_TYPE_DEVICE, NULL},
154	{"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
155	{"_TZ_", ACPI_TYPE_THERMAL, NULL},
156	{"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
157	{"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
158	{"_GL_", ACPI_TYPE_MUTEX, (char *)1},
159
160#if !defined(ACPI_NO_METHOD_EXECUTION) || defined(ACPI_CONSTANT_EVAL_ONLY)
161	{"_OSI", ACPI_TYPE_METHOD, (char *)1},
162#endif
163
164	/* Table terminator */
165
166	{NULL, ACPI_TYPE_ANY, NULL}
167};
168
169/*
170 * Properties of the ACPI Object Types, both internal and external.
171 * The table is indexed by values of acpi_object_type
172 */
173const u8 acpi_gbl_ns_properties[] = {
174	ACPI_NS_NORMAL,		/* 00 Any              */
175	ACPI_NS_NORMAL,		/* 01 Number           */
176	ACPI_NS_NORMAL,		/* 02 String           */
177	ACPI_NS_NORMAL,		/* 03 Buffer           */
178	ACPI_NS_NORMAL,		/* 04 Package          */
179	ACPI_NS_NORMAL,		/* 05 field_unit       */
180	ACPI_NS_NEWSCOPE,	/* 06 Device           */
181	ACPI_NS_NORMAL,		/* 07 Event            */
182	ACPI_NS_NEWSCOPE,	/* 08 Method           */
183	ACPI_NS_NORMAL,		/* 09 Mutex            */
184	ACPI_NS_NORMAL,		/* 10 Region           */
185	ACPI_NS_NEWSCOPE,	/* 11 Power            */
186	ACPI_NS_NEWSCOPE,	/* 12 Processor        */
187	ACPI_NS_NEWSCOPE,	/* 13 Thermal          */
188	ACPI_NS_NORMAL,		/* 14 buffer_field     */
189	ACPI_NS_NORMAL,		/* 15 ddb_handle       */
190	ACPI_NS_NORMAL,		/* 16 Debug Object     */
191	ACPI_NS_NORMAL,		/* 17 def_field        */
192	ACPI_NS_NORMAL,		/* 18 bank_field       */
193	ACPI_NS_NORMAL,		/* 19 index_field      */
194	ACPI_NS_NORMAL,		/* 20 Reference        */
195	ACPI_NS_NORMAL,		/* 21 Alias            */
196	ACPI_NS_NORMAL,		/* 22 method_alias     */
197	ACPI_NS_NORMAL,		/* 23 Notify           */
198	ACPI_NS_NORMAL,		/* 24 Address Handler  */
199	ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,	/* 25 Resource Desc    */
200	ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,	/* 26 Resource Field   */
201	ACPI_NS_NEWSCOPE,	/* 27 Scope            */
202	ACPI_NS_NORMAL,		/* 28 Extra            */
203	ACPI_NS_NORMAL,		/* 29 Data             */
204	ACPI_NS_NORMAL		/* 30 Invalid          */
205};
206
207/* Hex to ASCII conversion table */
208
209static const char acpi_gbl_hex_to_ascii[] = {
210	'0', '1', '2', '3', '4', '5', '6', '7',
211	'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
212};
213
214/*******************************************************************************
215 *
216 * FUNCTION:    acpi_ut_hex_to_ascii_char
217 *
218 * PARAMETERS:  Integer             - Contains the hex digit
219 *              Position            - bit position of the digit within the
220 *                                    integer (multiple of 4)
221 *
222 * RETURN:      The converted Ascii character
223 *
224 * DESCRIPTION: Convert a hex digit to an Ascii character
225 *
226 ******************************************************************************/
227
228char acpi_ut_hex_to_ascii_char(acpi_integer integer, u32 position)
229{
230
231	return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
232}
233
234/******************************************************************************
235 *
236 * Event and Hardware globals
237 *
238 ******************************************************************************/
239
240struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = {
241	/* Name                                     Parent Register             Register Bit Position                   Register Bit Mask       */
242
243	/* ACPI_BITREG_TIMER_STATUS         */ {ACPI_REGISTER_PM1_STATUS,
244						ACPI_BITPOSITION_TIMER_STATUS,
245						ACPI_BITMASK_TIMER_STATUS},
246	/* ACPI_BITREG_BUS_MASTER_STATUS    */ {ACPI_REGISTER_PM1_STATUS,
247						ACPI_BITPOSITION_BUS_MASTER_STATUS,
248						ACPI_BITMASK_BUS_MASTER_STATUS},
249	/* ACPI_BITREG_GLOBAL_LOCK_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
250						ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,
251						ACPI_BITMASK_GLOBAL_LOCK_STATUS},
252	/* ACPI_BITREG_POWER_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
253						ACPI_BITPOSITION_POWER_BUTTON_STATUS,
254						ACPI_BITMASK_POWER_BUTTON_STATUS},
255	/* ACPI_BITREG_SLEEP_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
256						ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,
257						ACPI_BITMASK_SLEEP_BUTTON_STATUS},
258	/* ACPI_BITREG_RT_CLOCK_STATUS      */ {ACPI_REGISTER_PM1_STATUS,
259						ACPI_BITPOSITION_RT_CLOCK_STATUS,
260						ACPI_BITMASK_RT_CLOCK_STATUS},
261	/* ACPI_BITREG_WAKE_STATUS          */ {ACPI_REGISTER_PM1_STATUS,
262						ACPI_BITPOSITION_WAKE_STATUS,
263						ACPI_BITMASK_WAKE_STATUS},
264	/* ACPI_BITREG_PCIEXP_WAKE_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
265						ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,
266						ACPI_BITMASK_PCIEXP_WAKE_STATUS},
267
268	/* ACPI_BITREG_TIMER_ENABLE         */ {ACPI_REGISTER_PM1_ENABLE,
269						ACPI_BITPOSITION_TIMER_ENABLE,
270						ACPI_BITMASK_TIMER_ENABLE},
271	/* ACPI_BITREG_GLOBAL_LOCK_ENABLE   */ {ACPI_REGISTER_PM1_ENABLE,
272						ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,
273						ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
274	/* ACPI_BITREG_POWER_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
275						ACPI_BITPOSITION_POWER_BUTTON_ENABLE,
276						ACPI_BITMASK_POWER_BUTTON_ENABLE},
277	/* ACPI_BITREG_SLEEP_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
278						ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,
279						ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
280	/* ACPI_BITREG_RT_CLOCK_ENABLE      */ {ACPI_REGISTER_PM1_ENABLE,
281						ACPI_BITPOSITION_RT_CLOCK_ENABLE,
282						ACPI_BITMASK_RT_CLOCK_ENABLE},
283	/* ACPI_BITREG_WAKE_ENABLE          */ {ACPI_REGISTER_PM1_ENABLE, 0, 0},
284	/* ACPI_BITREG_PCIEXP_WAKE_DISABLE  */ {ACPI_REGISTER_PM1_ENABLE,
285						ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
286						ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
287
288	/* ACPI_BITREG_SCI_ENABLE           */ {ACPI_REGISTER_PM1_CONTROL,
289						ACPI_BITPOSITION_SCI_ENABLE,
290						ACPI_BITMASK_SCI_ENABLE},
291	/* ACPI_BITREG_BUS_MASTER_RLD       */ {ACPI_REGISTER_PM1_CONTROL,
292						ACPI_BITPOSITION_BUS_MASTER_RLD,
293						ACPI_BITMASK_BUS_MASTER_RLD},
294	/* ACPI_BITREG_GLOBAL_LOCK_RELEASE  */ {ACPI_REGISTER_PM1_CONTROL,
295						ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,
296						ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
297	/* ACPI_BITREG_SLEEP_TYPE_A         */ {ACPI_REGISTER_PM1_CONTROL,
298						ACPI_BITPOSITION_SLEEP_TYPE_X,
299						ACPI_BITMASK_SLEEP_TYPE_X},
300	/* ACPI_BITREG_SLEEP_TYPE_B         */ {ACPI_REGISTER_PM1_CONTROL,
301						ACPI_BITPOSITION_SLEEP_TYPE_X,
302						ACPI_BITMASK_SLEEP_TYPE_X},
303	/* ACPI_BITREG_SLEEP_ENABLE         */ {ACPI_REGISTER_PM1_CONTROL,
304						ACPI_BITPOSITION_SLEEP_ENABLE,
305						ACPI_BITMASK_SLEEP_ENABLE},
306
307	/* ACPI_BITREG_ARB_DIS              */ {ACPI_REGISTER_PM2_CONTROL,
308						ACPI_BITPOSITION_ARB_DISABLE,
309						ACPI_BITMASK_ARB_DISABLE}
310};
311
312struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = {
313	/* ACPI_EVENT_PMTIMER       */ {ACPI_BITREG_TIMER_STATUS,
314					ACPI_BITREG_TIMER_ENABLE,
315					ACPI_BITMASK_TIMER_STATUS,
316					ACPI_BITMASK_TIMER_ENABLE},
317	/* ACPI_EVENT_GLOBAL        */ {ACPI_BITREG_GLOBAL_LOCK_STATUS,
318					ACPI_BITREG_GLOBAL_LOCK_ENABLE,
319					ACPI_BITMASK_GLOBAL_LOCK_STATUS,
320					ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
321	/* ACPI_EVENT_POWER_BUTTON  */ {ACPI_BITREG_POWER_BUTTON_STATUS,
322					ACPI_BITREG_POWER_BUTTON_ENABLE,
323					ACPI_BITMASK_POWER_BUTTON_STATUS,
324					ACPI_BITMASK_POWER_BUTTON_ENABLE},
325	/* ACPI_EVENT_SLEEP_BUTTON  */ {ACPI_BITREG_SLEEP_BUTTON_STATUS,
326					ACPI_BITREG_SLEEP_BUTTON_ENABLE,
327					ACPI_BITMASK_SLEEP_BUTTON_STATUS,
328					ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
329	/* ACPI_EVENT_RTC           */ {ACPI_BITREG_RT_CLOCK_STATUS,
330					ACPI_BITREG_RT_CLOCK_ENABLE,
331					ACPI_BITMASK_RT_CLOCK_STATUS,
332					ACPI_BITMASK_RT_CLOCK_ENABLE},
333};
334
335/*******************************************************************************
336 *
337 * FUNCTION:    acpi_ut_get_region_name
338 *
339 * PARAMETERS:  None.
340 *
341 * RETURN:      Status
342 *
343 * DESCRIPTION: Translate a Space ID into a name string (Debug only)
344 *
345 ******************************************************************************/
346
347/* Region type decoding */
348
349const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
350	"SystemMemory",
351	"SystemIO",
352	"PCI_Config",
353	"EmbeddedControl",
354	"SMBus",
355	"CMOS",
356	"PCIBARTarget",
357	"DataTable"
358};
359
360char *acpi_ut_get_region_name(u8 space_id)
361{
362
363	if (space_id >= ACPI_USER_REGION_BEGIN) {
364		return ("UserDefinedRegion");
365	} else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) {
366		return ("InvalidSpaceId");
367	}
368
369	return (ACPI_CAST_PTR(char, acpi_gbl_region_types[space_id]));
370}
371
372/*******************************************************************************
373 *
374 * FUNCTION:    acpi_ut_get_event_name
375 *
376 * PARAMETERS:  None.
377 *
378 * RETURN:      Status
379 *
380 * DESCRIPTION: Translate a Event ID into a name string (Debug only)
381 *
382 ******************************************************************************/
383
384/* Event type decoding */
385
386static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = {
387	"PM_Timer",
388	"GlobalLock",
389	"PowerButton",
390	"SleepButton",
391	"RealTimeClock",
392};
393
394char *acpi_ut_get_event_name(u32 event_id)
395{
396
397	if (event_id > ACPI_EVENT_MAX) {
398		return ("InvalidEventID");
399	}
400
401	return (ACPI_CAST_PTR(char, acpi_gbl_event_types[event_id]));
402}
403
404/*******************************************************************************
405 *
406 * FUNCTION:    acpi_ut_get_type_name
407 *
408 * PARAMETERS:  None.
409 *
410 * RETURN:      Status
411 *
412 * DESCRIPTION: Translate a Type ID into a name string (Debug only)
413 *
414 ******************************************************************************/
415
416/*
417 * Elements of acpi_gbl_ns_type_names below must match
418 * one-to-one with values of acpi_object_type
419 *
420 * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
421 * when stored in a table it really means that we have thus far seen no
422 * evidence to indicate what type is actually going to be stored for this entry.
423 */
424static const char acpi_gbl_bad_type[] = "UNDEFINED";
425
426/* Printable names of the ACPI object types */
427
428static const char *acpi_gbl_ns_type_names[] = {
429	/* 00 */ "Untyped",
430	/* 01 */ "Integer",
431	/* 02 */ "String",
432	/* 03 */ "Buffer",
433	/* 04 */ "Package",
434	/* 05 */ "FieldUnit",
435	/* 06 */ "Device",
436	/* 07 */ "Event",
437	/* 08 */ "Method",
438	/* 09 */ "Mutex",
439	/* 10 */ "Region",
440	/* 11 */ "Power",
441	/* 12 */ "Processor",
442	/* 13 */ "Thermal",
443	/* 14 */ "BufferField",
444	/* 15 */ "DdbHandle",
445	/* 16 */ "DebugObject",
446	/* 17 */ "RegionField",
447	/* 18 */ "BankField",
448	/* 19 */ "IndexField",
449	/* 20 */ "Reference",
450	/* 21 */ "Alias",
451	/* 22 */ "MethodAlias",
452	/* 23 */ "Notify",
453	/* 24 */ "AddrHandler",
454	/* 25 */ "ResourceDesc",
455	/* 26 */ "ResourceFld",
456	/* 27 */ "Scope",
457	/* 28 */ "Extra",
458	/* 29 */ "Data",
459	/* 30 */ "Invalid"
460};
461
462char *acpi_ut_get_type_name(acpi_object_type type)
463{
464
465	if (type > ACPI_TYPE_INVALID) {
466		return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
467	}
468
469	return (ACPI_CAST_PTR(char, acpi_gbl_ns_type_names[type]));
470}
471
472char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
473{
474
475	if (!obj_desc) {
476		return ("[NULL Object Descriptor]");
477	}
478
479	return (acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE(obj_desc)));
480}
481
482/*******************************************************************************
483 *
484 * FUNCTION:    acpi_ut_get_node_name
485 *
486 * PARAMETERS:  Object               - A namespace node
487 *
488 * RETURN:      Pointer to a string
489 *
490 * DESCRIPTION: Validate the node and return the node's ACPI name.
491 *
492 ******************************************************************************/
493
494char *acpi_ut_get_node_name(void *object)
495{
496	struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;
497
498	/* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */
499
500	if (!object) {
501		return ("NULL");
502	}
503
504	/* Check for Root node */
505
506	if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) {
507		return ("\"\\\" ");
508	}
509
510	/* Descriptor must be a namespace node */
511
512	if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
513		return ("####");
514	}
515
516	/* Name must be a valid ACPI name */
517
518	if (!acpi_ut_valid_acpi_name(node->name.integer)) {
519		node->name.integer = acpi_ut_repair_name(node->name.ascii);
520	}
521
522	/* Return the name */
523
524	return (node->name.ascii);
525}
526
527/*******************************************************************************
528 *
529 * FUNCTION:    acpi_ut_get_descriptor_name
530 *
531 * PARAMETERS:  Object               - An ACPI object
532 *
533 * RETURN:      Pointer to a string
534 *
535 * DESCRIPTION: Validate object and return the descriptor type
536 *
537 ******************************************************************************/
538
539/* Printable names of object descriptor types */
540
541static const char *acpi_gbl_desc_type_names[] = {
542	/* 00 */ "Invalid",
543	/* 01 */ "Cached",
544	/* 02 */ "State-Generic",
545	/* 03 */ "State-Update",
546	/* 04 */ "State-Package",
547	/* 05 */ "State-Control",
548	/* 06 */ "State-RootParseScope",
549	/* 07 */ "State-ParseScope",
550	/* 08 */ "State-WalkScope",
551	/* 09 */ "State-Result",
552	/* 10 */ "State-Notify",
553	/* 11 */ "State-Thread",
554	/* 12 */ "Walk",
555	/* 13 */ "Parser",
556	/* 14 */ "Operand",
557	/* 15 */ "Node"
558};
559
560char *acpi_ut_get_descriptor_name(void *object)
561{
562
563	if (!object) {
564		return ("NULL OBJECT");
565	}
566
567	if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) {
568		return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
569	}
570
571	return (ACPI_CAST_PTR(char,
572			      acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE
573						       (object)]));
574
575}
576
577#if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
578/*
579 * Strings and procedures used for debug only
580 */
581
582/*******************************************************************************
583 *
584 * FUNCTION:    acpi_ut_get_mutex_name
585 *
586 * PARAMETERS:  mutex_id        - The predefined ID for this mutex.
587 *
588 * RETURN:      String containing the name of the mutex. Always returns a valid
589 *              pointer.
590 *
591 * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
592 *
593 ******************************************************************************/
594
595char *acpi_ut_get_mutex_name(u32 mutex_id)
596{
597
598	if (mutex_id > ACPI_MAX_MUTEX) {
599		return ("Invalid Mutex ID");
600	}
601
602	return (acpi_gbl_mutex_names[mutex_id]);
603}
604#endif
605
606/*******************************************************************************
607 *
608 * FUNCTION:    acpi_ut_valid_object_type
609 *
610 * PARAMETERS:  Type            - Object type to be validated
611 *
612 * RETURN:      TRUE if valid object type, FALSE otherwise
613 *
614 * DESCRIPTION: Validate an object type
615 *
616 ******************************************************************************/
617
618u8 acpi_ut_valid_object_type(acpi_object_type type)
619{
620
621	if (type > ACPI_TYPE_LOCAL_MAX) {
622
623		/* Note: Assumes all TYPEs are contiguous (external/local) */
624
625		return (FALSE);
626	}
627
628	return (TRUE);
629}
630
631/*******************************************************************************
632 *
633 * FUNCTION:    acpi_ut_init_globals
634 *
635 * PARAMETERS:  None
636 *
637 * RETURN:      None
638 *
639 * DESCRIPTION: Init library globals.  All globals that require specific
640 *              initialization should be initialized here!
641 *
642 ******************************************************************************/
643
644void acpi_ut_init_globals(void)
645{
646	acpi_status status;
647	u32 i;
648
649	ACPI_FUNCTION_TRACE(ut_init_globals);
650
651	/* Create all memory caches */
652
653	status = acpi_ut_create_caches();
654	if (ACPI_FAILURE(status)) {
655		return;
656	}
657
658	/* Mutex locked flags */
659
660	for (i = 0; i < ACPI_NUM_MUTEX; i++) {
661		acpi_gbl_mutex_info[i].mutex = NULL;
662		acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
663		acpi_gbl_mutex_info[i].use_count = 0;
664	}
665
666	for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
667		acpi_gbl_owner_id_mask[i] = 0;
668	}
669	acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;	/* Last ID is never valid */
670
671	/* GPE support */
672
673	acpi_gpe_count = 0;
674	acpi_gbl_gpe_xrupt_list_head = NULL;
675	acpi_gbl_gpe_fadt_blocks[0] = NULL;
676	acpi_gbl_gpe_fadt_blocks[1] = NULL;
677
678	/* Global notify handlers */
679
680	acpi_gbl_system_notify.handler = NULL;
681	acpi_gbl_device_notify.handler = NULL;
682	acpi_gbl_exception_handler = NULL;
683	acpi_gbl_init_handler = NULL;
684
685	/* Global Lock support */
686
687	acpi_gbl_global_lock_semaphore = NULL;
688	acpi_gbl_global_lock_mutex = NULL;
689	acpi_gbl_global_lock_acquired = FALSE;
690	acpi_gbl_global_lock_handle = 0;
691
692	/* Miscellaneous variables */
693
694	acpi_gbl_cm_single_step = FALSE;
695	acpi_gbl_db_terminate_threads = FALSE;
696	acpi_gbl_shutdown = FALSE;
697	acpi_gbl_ns_lookup_count = 0;
698	acpi_gbl_ps_find_count = 0;
699	acpi_gbl_acpi_hardware_present = TRUE;
700	acpi_gbl_last_owner_id_index = 0;
701	acpi_gbl_next_owner_id_offset = 0;
702	acpi_gbl_trace_method_name = 0;
703	acpi_gbl_trace_dbg_level = 0;
704	acpi_gbl_trace_dbg_layer = 0;
705	acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
706	acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
707
708	/* Hardware oriented */
709
710	acpi_gbl_events_initialized = FALSE;
711	acpi_gbl_system_awake_and_running = TRUE;
712
713	/* Namespace */
714
715	acpi_gbl_root_node = NULL;
716	acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
717	acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
718	acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
719	acpi_gbl_root_node_struct.child = NULL;
720	acpi_gbl_root_node_struct.peer = NULL;
721	acpi_gbl_root_node_struct.object = NULL;
722	acpi_gbl_root_node_struct.flags = ANOBJ_END_OF_PEER_LIST;
723
724#ifdef ACPI_DEBUG_OUTPUT
725	acpi_gbl_lowest_stack_pointer = ACPI_SIZE_MAX;
726#endif
727
728#ifdef ACPI_DBG_TRACK_ALLOCATIONS
729	acpi_gbl_display_final_mem_stats = FALSE;
730#endif
731
732	return_VOID;
733}
734
735ACPI_EXPORT_SYMBOL(acpi_dbg_level)
736    ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
737    ACPI_EXPORT_SYMBOL(acpi_gpe_count)
738