93ea8290b4f741d68986bce4f3d38ba9cf18983c
[linux-2.6.git] / drivers / acpi / utilities / utglobal.c
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
49 ACPI_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 */
63 u32 acpi_dbg_level = ACPI_DEBUG_DEFAULT;
64
65 /* Debug switch - layer (component) mask */
66
67 u32 acpi_dbg_layer = ACPI_COMPONENT_DEFAULT | ACPI_ALL_DRIVERS;
68 u32 acpi_gbl_nesting_level = 0;
69
70 /* Debugger globals */
71
72 u8 acpi_gbl_db_terminate_threads = FALSE;
73 u8 acpi_gbl_abort_method = FALSE;
74 u8 acpi_gbl_method_executing = FALSE;
75
76 /* System flags */
77
78 u32 acpi_gbl_startup_flags = 0;
79
80 /* System starts uninitialized */
81
82 u8 acpi_gbl_shutdown = TRUE;
83
84 const char *acpi_gbl_sleep_state_names[ACPI_S_STATE_COUNT] = {
85         "\\_S0_",
86         "\\_S1_",
87         "\\_S2_",
88         "\\_S3_",
89         "\\_S4_",
90         "\\_S5_"
91 };
92
93 const 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
114 const 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                 dump_stack();
130         }
131
132         return (ACPI_CAST_PTR(const char, exception));
133 }
134
135 ACPI_EXPORT_SYMBOL(acpi_format_exception)
136
137 /*******************************************************************************
138  *
139  * Namespace globals
140  *
141  ******************************************************************************/
142 /*
143  * Predefined ACPI Names (Built-in to the Interpreter)
144  *
145  * NOTES:
146  * 1) _SB_ is defined to be a device to allow \_SB_._INI to be run
147  *    during the initialization sequence.
148  * 2) _TZ_ is defined to be a thermal zone in order to allow ASL code to
149  *    perform a Notify() operation on it.
150  */
151 const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = {
152         {"_GPE", ACPI_TYPE_LOCAL_SCOPE, NULL},
153         {"_PR_", ACPI_TYPE_LOCAL_SCOPE, NULL},
154         {"_SB_", ACPI_TYPE_DEVICE, NULL},
155         {"_SI_", ACPI_TYPE_LOCAL_SCOPE, NULL},
156         {"_TZ_", ACPI_TYPE_THERMAL, NULL},
157         {"_REV", ACPI_TYPE_INTEGER, (char *)ACPI_CA_SUPPORT_LEVEL},
158         {"_OS_", ACPI_TYPE_STRING, ACPI_OS_NAME},
159         {"_GL_", ACPI_TYPE_MUTEX, (char *)1},
160
161 #if !defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)
162         {"_OSI", ACPI_TYPE_METHOD, (char *)1},
163 #endif
164
165         /* Table terminator */
166
167         {NULL, ACPI_TYPE_ANY, NULL}
168 };
169
170 /*
171  * Properties of the ACPI Object Types, both internal and external.
172  * The table is indexed by values of acpi_object_type
173  */
174 const u8 acpi_gbl_ns_properties[] = {
175         ACPI_NS_NORMAL,         /* 00 Any              */
176         ACPI_NS_NORMAL,         /* 01 Number           */
177         ACPI_NS_NORMAL,         /* 02 String           */
178         ACPI_NS_NORMAL,         /* 03 Buffer           */
179         ACPI_NS_NORMAL,         /* 04 Package          */
180         ACPI_NS_NORMAL,         /* 05 field_unit       */
181         ACPI_NS_NEWSCOPE,       /* 06 Device           */
182         ACPI_NS_NORMAL,         /* 07 Event            */
183         ACPI_NS_NEWSCOPE,       /* 08 Method           */
184         ACPI_NS_NORMAL,         /* 09 Mutex            */
185         ACPI_NS_NORMAL,         /* 10 Region           */
186         ACPI_NS_NEWSCOPE,       /* 11 Power            */
187         ACPI_NS_NEWSCOPE,       /* 12 Processor        */
188         ACPI_NS_NEWSCOPE,       /* 13 Thermal          */
189         ACPI_NS_NORMAL,         /* 14 buffer_field     */
190         ACPI_NS_NORMAL,         /* 15 ddb_handle       */
191         ACPI_NS_NORMAL,         /* 16 Debug Object     */
192         ACPI_NS_NORMAL,         /* 17 def_field        */
193         ACPI_NS_NORMAL,         /* 18 bank_field       */
194         ACPI_NS_NORMAL,         /* 19 index_field      */
195         ACPI_NS_NORMAL,         /* 20 Reference        */
196         ACPI_NS_NORMAL,         /* 21 Alias            */
197         ACPI_NS_NORMAL,         /* 22 method_alias     */
198         ACPI_NS_NORMAL,         /* 23 Notify           */
199         ACPI_NS_NORMAL,         /* 24 Address Handler  */
200         ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,       /* 25 Resource Desc    */
201         ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,       /* 26 Resource Field   */
202         ACPI_NS_NEWSCOPE,       /* 27 Scope            */
203         ACPI_NS_NORMAL,         /* 28 Extra            */
204         ACPI_NS_NORMAL,         /* 29 Data             */
205         ACPI_NS_NORMAL          /* 30 Invalid          */
206 };
207
208 /* Hex to ASCII conversion table */
209
210 static const char acpi_gbl_hex_to_ascii[] = {
211         '0', '1', '2', '3', '4', '5', '6', '7',
212         '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
213 };
214
215 /*******************************************************************************
216  *
217  * FUNCTION:    acpi_ut_hex_to_ascii_char
218  *
219  * PARAMETERS:  Integer             - Contains the hex digit
220  *              Position            - bit position of the digit within the
221  *                                    integer (multiple of 4)
222  *
223  * RETURN:      The converted Ascii character
224  *
225  * DESCRIPTION: Convert a hex digit to an Ascii character
226  *
227  ******************************************************************************/
228
229 char acpi_ut_hex_to_ascii_char(acpi_integer integer, u32 position)
230 {
231
232         return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
233 }
234
235 /******************************************************************************
236  *
237  * Event and Hardware globals
238  *
239  ******************************************************************************/
240
241 struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = {
242         /* Name                                     Parent Register             Register Bit Position                   Register Bit Mask       */
243
244         /* ACPI_BITREG_TIMER_STATUS         */ {ACPI_REGISTER_PM1_STATUS,
245                                                 ACPI_BITPOSITION_TIMER_STATUS,
246                                                 ACPI_BITMASK_TIMER_STATUS},
247         /* ACPI_BITREG_BUS_MASTER_STATUS    */ {ACPI_REGISTER_PM1_STATUS,
248                                                 ACPI_BITPOSITION_BUS_MASTER_STATUS,
249                                                 ACPI_BITMASK_BUS_MASTER_STATUS},
250         /* ACPI_BITREG_GLOBAL_LOCK_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
251                                                 ACPI_BITPOSITION_GLOBAL_LOCK_STATUS,
252                                                 ACPI_BITMASK_GLOBAL_LOCK_STATUS},
253         /* ACPI_BITREG_POWER_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
254                                                 ACPI_BITPOSITION_POWER_BUTTON_STATUS,
255                                                 ACPI_BITMASK_POWER_BUTTON_STATUS},
256         /* ACPI_BITREG_SLEEP_BUTTON_STATUS  */ {ACPI_REGISTER_PM1_STATUS,
257                                                 ACPI_BITPOSITION_SLEEP_BUTTON_STATUS,
258                                                 ACPI_BITMASK_SLEEP_BUTTON_STATUS},
259         /* ACPI_BITREG_RT_CLOCK_STATUS      */ {ACPI_REGISTER_PM1_STATUS,
260                                                 ACPI_BITPOSITION_RT_CLOCK_STATUS,
261                                                 ACPI_BITMASK_RT_CLOCK_STATUS},
262         /* ACPI_BITREG_WAKE_STATUS          */ {ACPI_REGISTER_PM1_STATUS,
263                                                 ACPI_BITPOSITION_WAKE_STATUS,
264                                                 ACPI_BITMASK_WAKE_STATUS},
265         /* ACPI_BITREG_PCIEXP_WAKE_STATUS   */ {ACPI_REGISTER_PM1_STATUS,
266                                                 ACPI_BITPOSITION_PCIEXP_WAKE_STATUS,
267                                                 ACPI_BITMASK_PCIEXP_WAKE_STATUS},
268
269         /* ACPI_BITREG_TIMER_ENABLE         */ {ACPI_REGISTER_PM1_ENABLE,
270                                                 ACPI_BITPOSITION_TIMER_ENABLE,
271                                                 ACPI_BITMASK_TIMER_ENABLE},
272         /* ACPI_BITREG_GLOBAL_LOCK_ENABLE   */ {ACPI_REGISTER_PM1_ENABLE,
273                                                 ACPI_BITPOSITION_GLOBAL_LOCK_ENABLE,
274                                                 ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
275         /* ACPI_BITREG_POWER_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
276                                                 ACPI_BITPOSITION_POWER_BUTTON_ENABLE,
277                                                 ACPI_BITMASK_POWER_BUTTON_ENABLE},
278         /* ACPI_BITREG_SLEEP_BUTTON_ENABLE  */ {ACPI_REGISTER_PM1_ENABLE,
279                                                 ACPI_BITPOSITION_SLEEP_BUTTON_ENABLE,
280                                                 ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
281         /* ACPI_BITREG_RT_CLOCK_ENABLE      */ {ACPI_REGISTER_PM1_ENABLE,
282                                                 ACPI_BITPOSITION_RT_CLOCK_ENABLE,
283                                                 ACPI_BITMASK_RT_CLOCK_ENABLE},
284         /* ACPI_BITREG_WAKE_ENABLE          */ {ACPI_REGISTER_PM1_ENABLE, 0, 0},
285         /* ACPI_BITREG_PCIEXP_WAKE_DISABLE  */ {ACPI_REGISTER_PM1_ENABLE,
286                                                 ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
287                                                 ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
288
289         /* ACPI_BITREG_SCI_ENABLE           */ {ACPI_REGISTER_PM1_CONTROL,
290                                                 ACPI_BITPOSITION_SCI_ENABLE,
291                                                 ACPI_BITMASK_SCI_ENABLE},
292         /* ACPI_BITREG_BUS_MASTER_RLD       */ {ACPI_REGISTER_PM1_CONTROL,
293                                                 ACPI_BITPOSITION_BUS_MASTER_RLD,
294                                                 ACPI_BITMASK_BUS_MASTER_RLD},
295         /* ACPI_BITREG_GLOBAL_LOCK_RELEASE  */ {ACPI_REGISTER_PM1_CONTROL,
296                                                 ACPI_BITPOSITION_GLOBAL_LOCK_RELEASE,
297                                                 ACPI_BITMASK_GLOBAL_LOCK_RELEASE},
298         /* ACPI_BITREG_SLEEP_TYPE_A         */ {ACPI_REGISTER_PM1_CONTROL,
299                                                 ACPI_BITPOSITION_SLEEP_TYPE_X,
300                                                 ACPI_BITMASK_SLEEP_TYPE_X},
301         /* ACPI_BITREG_SLEEP_TYPE_B         */ {ACPI_REGISTER_PM1_CONTROL,
302                                                 ACPI_BITPOSITION_SLEEP_TYPE_X,
303                                                 ACPI_BITMASK_SLEEP_TYPE_X},
304         /* ACPI_BITREG_SLEEP_ENABLE         */ {ACPI_REGISTER_PM1_CONTROL,
305                                                 ACPI_BITPOSITION_SLEEP_ENABLE,
306                                                 ACPI_BITMASK_SLEEP_ENABLE},
307
308         /* ACPI_BITREG_ARB_DIS              */ {ACPI_REGISTER_PM2_CONTROL,
309                                                 ACPI_BITPOSITION_ARB_DISABLE,
310                                                 ACPI_BITMASK_ARB_DISABLE}
311 };
312
313 struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = {
314         /* ACPI_EVENT_PMTIMER       */ {ACPI_BITREG_TIMER_STATUS,
315                                         ACPI_BITREG_TIMER_ENABLE,
316                                         ACPI_BITMASK_TIMER_STATUS,
317                                         ACPI_BITMASK_TIMER_ENABLE},
318         /* ACPI_EVENT_GLOBAL        */ {ACPI_BITREG_GLOBAL_LOCK_STATUS,
319                                         ACPI_BITREG_GLOBAL_LOCK_ENABLE,
320                                         ACPI_BITMASK_GLOBAL_LOCK_STATUS,
321                                         ACPI_BITMASK_GLOBAL_LOCK_ENABLE},
322         /* ACPI_EVENT_POWER_BUTTON  */ {ACPI_BITREG_POWER_BUTTON_STATUS,
323                                         ACPI_BITREG_POWER_BUTTON_ENABLE,
324                                         ACPI_BITMASK_POWER_BUTTON_STATUS,
325                                         ACPI_BITMASK_POWER_BUTTON_ENABLE},
326         /* ACPI_EVENT_SLEEP_BUTTON  */ {ACPI_BITREG_SLEEP_BUTTON_STATUS,
327                                         ACPI_BITREG_SLEEP_BUTTON_ENABLE,
328                                         ACPI_BITMASK_SLEEP_BUTTON_STATUS,
329                                         ACPI_BITMASK_SLEEP_BUTTON_ENABLE},
330         /* ACPI_EVENT_RTC           */ {ACPI_BITREG_RT_CLOCK_STATUS,
331                                         ACPI_BITREG_RT_CLOCK_ENABLE,
332                                         ACPI_BITMASK_RT_CLOCK_STATUS,
333                                         ACPI_BITMASK_RT_CLOCK_ENABLE},
334 };
335
336 /*******************************************************************************
337  *
338  * FUNCTION:    acpi_ut_get_region_name
339  *
340  * PARAMETERS:  None.
341  *
342  * RETURN:      Status
343  *
344  * DESCRIPTION: Translate a Space ID into a name string (Debug only)
345  *
346  ******************************************************************************/
347
348 /* Region type decoding */
349
350 const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
351         "SystemMemory",
352         "SystemIO",
353         "PCI_Config",
354         "EmbeddedControl",
355         "SMBus",
356         "CMOS",
357         "PCIBARTarget",
358         "DataTable"
359 };
360
361 char *acpi_ut_get_region_name(u8 space_id)
362 {
363
364         if (space_id >= ACPI_USER_REGION_BEGIN) {
365                 return ("UserDefinedRegion");
366         } else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) {
367                 return ("InvalidSpaceId");
368         }
369
370         return (ACPI_CAST_PTR(char, acpi_gbl_region_types[space_id]));
371 }
372
373 /*******************************************************************************
374  *
375  * FUNCTION:    acpi_ut_get_event_name
376  *
377  * PARAMETERS:  None.
378  *
379  * RETURN:      Status
380  *
381  * DESCRIPTION: Translate a Event ID into a name string (Debug only)
382  *
383  ******************************************************************************/
384
385 /* Event type decoding */
386
387 static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = {
388         "PM_Timer",
389         "GlobalLock",
390         "PowerButton",
391         "SleepButton",
392         "RealTimeClock",
393 };
394
395 char *acpi_ut_get_event_name(u32 event_id)
396 {
397
398         if (event_id > ACPI_EVENT_MAX) {
399                 return ("InvalidEventID");
400         }
401
402         return (ACPI_CAST_PTR(char, acpi_gbl_event_types[event_id]));
403 }
404
405 /*******************************************************************************
406  *
407  * FUNCTION:    acpi_ut_get_type_name
408  *
409  * PARAMETERS:  None.
410  *
411  * RETURN:      Status
412  *
413  * DESCRIPTION: Translate a Type ID into a name string (Debug only)
414  *
415  ******************************************************************************/
416
417 /*
418  * Elements of acpi_gbl_ns_type_names below must match
419  * one-to-one with values of acpi_object_type
420  *
421  * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
422  * when stored in a table it really means that we have thus far seen no
423  * evidence to indicate what type is actually going to be stored for this entry.
424  */
425 static const char acpi_gbl_bad_type[] = "UNDEFINED";
426
427 /* Printable names of the ACPI object types */
428
429 static const char *acpi_gbl_ns_type_names[] = {
430         /* 00 */ "Untyped",
431         /* 01 */ "Integer",
432         /* 02 */ "String",
433         /* 03 */ "Buffer",
434         /* 04 */ "Package",
435         /* 05 */ "FieldUnit",
436         /* 06 */ "Device",
437         /* 07 */ "Event",
438         /* 08 */ "Method",
439         /* 09 */ "Mutex",
440         /* 10 */ "Region",
441         /* 11 */ "Power",
442         /* 12 */ "Processor",
443         /* 13 */ "Thermal",
444         /* 14 */ "BufferField",
445         /* 15 */ "DdbHandle",
446         /* 16 */ "DebugObject",
447         /* 17 */ "RegionField",
448         /* 18 */ "BankField",
449         /* 19 */ "IndexField",
450         /* 20 */ "Reference",
451         /* 21 */ "Alias",
452         /* 22 */ "MethodAlias",
453         /* 23 */ "Notify",
454         /* 24 */ "AddrHandler",
455         /* 25 */ "ResourceDesc",
456         /* 26 */ "ResourceFld",
457         /* 27 */ "Scope",
458         /* 28 */ "Extra",
459         /* 29 */ "Data",
460         /* 30 */ "Invalid"
461 };
462
463 char *acpi_ut_get_type_name(acpi_object_type type)
464 {
465
466         if (type > ACPI_TYPE_INVALID) {
467                 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
468         }
469
470         return (ACPI_CAST_PTR(char, acpi_gbl_ns_type_names[type]));
471 }
472
473 char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
474 {
475
476         if (!obj_desc) {
477                 return ("[NULL Object Descriptor]");
478         }
479
480         return (acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE(obj_desc)));
481 }
482
483 /*******************************************************************************
484  *
485  * FUNCTION:    acpi_ut_get_node_name
486  *
487  * PARAMETERS:  Object               - A namespace node
488  *
489  * RETURN:      Pointer to a string
490  *
491  * DESCRIPTION: Validate the node and return the node's ACPI name.
492  *
493  ******************************************************************************/
494
495 char *acpi_ut_get_node_name(void *object)
496 {
497         struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;
498
499         /* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */
500
501         if (!object) {
502                 return ("NULL");
503         }
504
505         /* Check for Root node */
506
507         if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) {
508                 return ("\"\\\" ");
509         }
510
511         /* Descriptor must be a namespace node */
512
513         if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
514                 return ("####");
515         }
516
517         /* Name must be a valid ACPI name */
518
519         if (!acpi_ut_valid_acpi_name(node->name.integer)) {
520                 node->name.integer = acpi_ut_repair_name(node->name.ascii);
521         }
522
523         /* Return the name */
524
525         return (node->name.ascii);
526 }
527
528 /*******************************************************************************
529  *
530  * FUNCTION:    acpi_ut_get_descriptor_name
531  *
532  * PARAMETERS:  Object               - An ACPI object
533  *
534  * RETURN:      Pointer to a string
535  *
536  * DESCRIPTION: Validate object and return the descriptor type
537  *
538  ******************************************************************************/
539
540 /* Printable names of object descriptor types */
541
542 static const char *acpi_gbl_desc_type_names[] = {
543         /* 00 */ "Invalid",
544         /* 01 */ "Cached",
545         /* 02 */ "State-Generic",
546         /* 03 */ "State-Update",
547         /* 04 */ "State-Package",
548         /* 05 */ "State-Control",
549         /* 06 */ "State-RootParseScope",
550         /* 07 */ "State-ParseScope",
551         /* 08 */ "State-WalkScope",
552         /* 09 */ "State-Result",
553         /* 10 */ "State-Notify",
554         /* 11 */ "State-Thread",
555         /* 12 */ "Walk",
556         /* 13 */ "Parser",
557         /* 14 */ "Operand",
558         /* 15 */ "Node"
559 };
560
561 char *acpi_ut_get_descriptor_name(void *object)
562 {
563
564         if (!object) {
565                 return ("NULL OBJECT");
566         }
567
568         if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) {
569                 return (ACPI_CAST_PTR(char, acpi_gbl_bad_type));
570         }
571
572         return (ACPI_CAST_PTR(char,
573                               acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE
574                                                        (object)]));
575
576 }
577
578 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
579 /*
580  * Strings and procedures used for debug only
581  */
582
583 /*******************************************************************************
584  *
585  * FUNCTION:    acpi_ut_get_mutex_name
586  *
587  * PARAMETERS:  mutex_id        - The predefined ID for this mutex.
588  *
589  * RETURN:      String containing the name of the mutex. Always returns a valid
590  *              pointer.
591  *
592  * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
593  *
594  ******************************************************************************/
595
596 char *acpi_ut_get_mutex_name(u32 mutex_id)
597 {
598
599         if (mutex_id > ACPI_MAX_MUTEX) {
600                 return ("Invalid Mutex ID");
601         }
602
603         return (acpi_gbl_mutex_names[mutex_id]);
604 }
605 #endif
606
607 /*******************************************************************************
608  *
609  * FUNCTION:    acpi_ut_valid_object_type
610  *
611  * PARAMETERS:  Type            - Object type to be validated
612  *
613  * RETURN:      TRUE if valid object type, FALSE otherwise
614  *
615  * DESCRIPTION: Validate an object type
616  *
617  ******************************************************************************/
618
619 u8 acpi_ut_valid_object_type(acpi_object_type type)
620 {
621
622         if (type > ACPI_TYPE_LOCAL_MAX) {
623
624                 /* Note: Assumes all TYPEs are contiguous (external/local) */
625
626                 return (FALSE);
627         }
628
629         return (TRUE);
630 }
631
632 /*******************************************************************************
633  *
634  * FUNCTION:    acpi_ut_init_globals
635  *
636  * PARAMETERS:  None
637  *
638  * RETURN:      None
639  *
640  * DESCRIPTION: Init library globals.  All globals that require specific
641  *              initialization should be initialized here!
642  *
643  ******************************************************************************/
644
645 void acpi_ut_init_globals(void)
646 {
647         acpi_status status;
648         u32 i;
649
650         ACPI_FUNCTION_TRACE(ut_init_globals);
651
652         /* Create all memory caches */
653
654         status = acpi_ut_create_caches();
655         if (ACPI_FAILURE(status)) {
656                 return;
657         }
658
659         /* Mutex locked flags */
660
661         for (i = 0; i < ACPI_NUM_MUTEX; i++) {
662                 acpi_gbl_mutex_info[i].mutex = NULL;
663                 acpi_gbl_mutex_info[i].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
664                 acpi_gbl_mutex_info[i].use_count = 0;
665         }
666
667         for (i = 0; i < ACPI_NUM_OWNERID_MASKS; i++) {
668                 acpi_gbl_owner_id_mask[i] = 0;
669         }
670         acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000;        /* Last ID is never valid */
671
672         /* GPE support */
673
674         acpi_gpe_count = 0;
675         acpi_gbl_gpe_xrupt_list_head = NULL;
676         acpi_gbl_gpe_fadt_blocks[0] = NULL;
677         acpi_gbl_gpe_fadt_blocks[1] = NULL;
678
679         /* Global notify handlers */
680
681         acpi_gbl_system_notify.handler = NULL;
682         acpi_gbl_device_notify.handler = NULL;
683         acpi_gbl_exception_handler = NULL;
684         acpi_gbl_init_handler = NULL;
685
686         /* Global Lock support */
687
688         acpi_gbl_global_lock_semaphore = NULL;
689         acpi_gbl_global_lock_mutex = NULL;
690         acpi_gbl_global_lock_acquired = FALSE;
691         acpi_gbl_global_lock_handle = 0;
692
693         /* Miscellaneous variables */
694
695         acpi_gbl_cm_single_step = FALSE;
696         acpi_gbl_db_terminate_threads = FALSE;
697         acpi_gbl_shutdown = FALSE;
698         acpi_gbl_ns_lookup_count = 0;
699         acpi_gbl_ps_find_count = 0;
700         acpi_gbl_acpi_hardware_present = TRUE;
701         acpi_gbl_last_owner_id_index = 0;
702         acpi_gbl_next_owner_id_offset = 0;
703         acpi_gbl_trace_method_name = 0;
704         acpi_gbl_trace_dbg_level = 0;
705         acpi_gbl_trace_dbg_layer = 0;
706         acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
707         acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
708
709         /* Hardware oriented */
710
711         acpi_gbl_events_initialized = FALSE;
712         acpi_gbl_system_awake_and_running = TRUE;
713
714         /* Namespace */
715
716         acpi_gbl_root_node = NULL;
717         acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
718         acpi_gbl_root_node_struct.descriptor_type = ACPI_DESC_TYPE_NAMED;
719         acpi_gbl_root_node_struct.type = ACPI_TYPE_DEVICE;
720         acpi_gbl_root_node_struct.child = NULL;
721         acpi_gbl_root_node_struct.peer = NULL;
722         acpi_gbl_root_node_struct.object = NULL;
723         acpi_gbl_root_node_struct.flags = ANOBJ_END_OF_PEER_LIST;
724
725 #ifdef ACPI_DEBUG_OUTPUT
726         acpi_gbl_lowest_stack_pointer = ACPI_SIZE_MAX;
727 #endif
728
729 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
730         acpi_gbl_display_final_mem_stats = FALSE;
731 #endif
732
733         return_VOID;
734 }
735
736 ACPI_EXPORT_SYMBOL(acpi_dbg_level)
737     ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
738     ACPI_EXPORT_SYMBOL(acpi_gpe_count)