1 /******************************************************************************
2  *
3  * Module Name: utdecode - Utility decoding routines (value-to-string)
4  *
5  *****************************************************************************/
6 
7 /*
8  * Copyright (C) 2000 - 2015, Intel Corp.
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 #include "acpi.h"
45 #include "accommon.h"
46 #include "acnamesp.h"
47 
48 #define _COMPONENT          ACPI_UTILITIES
49         ACPI_MODULE_NAME    ("utdecode")
50 
51 
52 /*
53  * Properties of the ACPI Object Types, both internal and external.
54  * The table is indexed by values of ACPI_OBJECT_TYPE
55  */
56 const UINT8                     AcpiGbl_NsProperties[ACPI_NUM_NS_TYPES] =
57 {
58     ACPI_NS_NORMAL,                     /* 00 Any              */
59     ACPI_NS_NORMAL,                     /* 01 Number           */
60     ACPI_NS_NORMAL,                     /* 02 String           */
61     ACPI_NS_NORMAL,                     /* 03 Buffer           */
62     ACPI_NS_NORMAL,                     /* 04 Package          */
63     ACPI_NS_NORMAL,                     /* 05 FieldUnit        */
64     ACPI_NS_NEWSCOPE,                   /* 06 Device           */
65     ACPI_NS_NORMAL,                     /* 07 Event            */
66     ACPI_NS_NEWSCOPE,                   /* 08 Method           */
67     ACPI_NS_NORMAL,                     /* 09 Mutex            */
68     ACPI_NS_NORMAL,                     /* 10 Region           */
69     ACPI_NS_NEWSCOPE,                   /* 11 Power            */
70     ACPI_NS_NEWSCOPE,                   /* 12 Processor        */
71     ACPI_NS_NEWSCOPE,                   /* 13 Thermal          */
72     ACPI_NS_NORMAL,                     /* 14 BufferField      */
73     ACPI_NS_NORMAL,                     /* 15 DdbHandle        */
74     ACPI_NS_NORMAL,                     /* 16 Debug Object     */
75     ACPI_NS_NORMAL,                     /* 17 DefField         */
76     ACPI_NS_NORMAL,                     /* 18 BankField        */
77     ACPI_NS_NORMAL,                     /* 19 IndexField       */
78     ACPI_NS_NORMAL,                     /* 20 Reference        */
79     ACPI_NS_NORMAL,                     /* 21 Alias            */
80     ACPI_NS_NORMAL,                     /* 22 MethodAlias      */
81     ACPI_NS_NORMAL,                     /* 23 Notify           */
82     ACPI_NS_NORMAL,                     /* 24 Address Handler  */
83     ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,   /* 25 Resource Desc    */
84     ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL,   /* 26 Resource Field   */
85     ACPI_NS_NEWSCOPE,                   /* 27 Scope            */
86     ACPI_NS_NORMAL,                     /* 28 Extra            */
87     ACPI_NS_NORMAL,                     /* 29 Data             */
88     ACPI_NS_NORMAL                      /* 30 Invalid          */
89 };
90 
91 
92 /*******************************************************************************
93  *
94  * FUNCTION:    AcpiUtGetRegionName
95  *
96  * PARAMETERS:  Space ID            - ID for the region
97  *
98  * RETURN:      Decoded region SpaceId name
99  *
100  * DESCRIPTION: Translate a Space ID into a name string (Debug only)
101  *
102  ******************************************************************************/
103 
104 /* Region type decoding */
105 
106 const char        *AcpiGbl_RegionTypes[ACPI_NUM_PREDEFINED_REGIONS] =
107 {
108     "SystemMemory",     /* 0x00 */
109     "SystemIO",         /* 0x01 */
110     "PCI_Config",       /* 0x02 */
111     "EmbeddedControl",  /* 0x03 */
112     "SMBus",            /* 0x04 */
113     "SystemCMOS",       /* 0x05 */
114     "PCIBARTarget",     /* 0x06 */
115     "IPMI",             /* 0x07 */
116     "GeneralPurposeIo", /* 0x08 */
117     "GenericSerialBus", /* 0x09 */
118     "PCC"               /* 0x0A */
119 };
120 
121 
122 char *
123 AcpiUtGetRegionName (
124     UINT8                   SpaceId)
125 {
126 
127     if (SpaceId >= ACPI_USER_REGION_BEGIN)
128     {
129         return ("UserDefinedRegion");
130     }
131     else if (SpaceId == ACPI_ADR_SPACE_DATA_TABLE)
132     {
133         return ("DataTable");
134     }
135     else if (SpaceId == ACPI_ADR_SPACE_FIXED_HARDWARE)
136     {
137         return ("FunctionalFixedHW");
138     }
139     else if (SpaceId >= ACPI_NUM_PREDEFINED_REGIONS)
140     {
141         return ("InvalidSpaceId");
142     }
143 
144     return (ACPI_CAST_PTR (char, AcpiGbl_RegionTypes[SpaceId]));
145 }
146 
147 
148 /*******************************************************************************
149  *
150  * FUNCTION:    AcpiUtGetEventName
151  *
152  * PARAMETERS:  EventId             - Fixed event ID
153  *
154  * RETURN:      Decoded event ID name
155  *
156  * DESCRIPTION: Translate a Event ID into a name string (Debug only)
157  *
158  ******************************************************************************/
159 
160 /* Event type decoding */
161 
162 static const char        *AcpiGbl_EventTypes[ACPI_NUM_FIXED_EVENTS] =
163 {
164     "PM_Timer",
165     "GlobalLock",
166     "PowerButton",
167     "SleepButton",
168     "RealTimeClock",
169 };
170 
171 
172 char *
173 AcpiUtGetEventName (
174     UINT32                  EventId)
175 {
176 
177     if (EventId > ACPI_EVENT_MAX)
178     {
179         return ("InvalidEventID");
180     }
181 
182     return (ACPI_CAST_PTR (char, AcpiGbl_EventTypes[EventId]));
183 }
184 
185 
186 /*******************************************************************************
187  *
188  * FUNCTION:    AcpiUtGetTypeName
189  *
190  * PARAMETERS:  Type                - An ACPI object type
191  *
192  * RETURN:      Decoded ACPI object type name
193  *
194  * DESCRIPTION: Translate a Type ID into a name string (Debug only)
195  *
196  ******************************************************************************/
197 
198 /*
199  * Elements of AcpiGbl_NsTypeNames below must match
200  * one-to-one with values of ACPI_OBJECT_TYPE
201  *
202  * The type ACPI_TYPE_ANY (Untyped) is used as a "don't care" when searching;
203  * when stored in a table it really means that we have thus far seen no
204  * evidence to indicate what type is actually going to be stored for this entry.
205  */
206 static const char           AcpiGbl_BadType[] = "UNDEFINED";
207 
208 /* Printable names of the ACPI object types */
209 
210 static const char           *AcpiGbl_NsTypeNames[] =
211 {
212     /* 00 */ "Untyped",
213     /* 01 */ "Integer",
214     /* 02 */ "String",
215     /* 03 */ "Buffer",
216     /* 04 */ "Package",
217     /* 05 */ "FieldUnit",
218     /* 06 */ "Device",
219     /* 07 */ "Event",
220     /* 08 */ "Method",
221     /* 09 */ "Mutex",
222     /* 10 */ "Region",
223     /* 11 */ "Power",
224     /* 12 */ "Processor",
225     /* 13 */ "Thermal",
226     /* 14 */ "BufferField",
227     /* 15 */ "DdbHandle",
228     /* 16 */ "DebugObject",
229     /* 17 */ "RegionField",
230     /* 18 */ "BankField",
231     /* 19 */ "IndexField",
232     /* 20 */ "Reference",
233     /* 21 */ "Alias",
234     /* 22 */ "MethodAlias",
235     /* 23 */ "Notify",
236     /* 24 */ "AddrHandler",
237     /* 25 */ "ResourceDesc",
238     /* 26 */ "ResourceFld",
239     /* 27 */ "Scope",
240     /* 28 */ "Extra",
241     /* 29 */ "Data",
242     /* 30 */ "Invalid"
243 };
244 
245 
246 char *
247 AcpiUtGetTypeName (
248     ACPI_OBJECT_TYPE        Type)
249 {
250 
251     if (Type > ACPI_TYPE_INVALID)
252     {
253         return (ACPI_CAST_PTR (char, AcpiGbl_BadType));
254     }
255 
256     return (ACPI_CAST_PTR (char, AcpiGbl_NsTypeNames[Type]));
257 }
258 
259 
260 char *
261 AcpiUtGetObjectTypeName (
262     ACPI_OPERAND_OBJECT     *ObjDesc)
263 {
264     ACPI_FUNCTION_TRACE (UtGetObjectTypeName);
265 
266 
267     if (!ObjDesc)
268     {
269         ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Null Object Descriptor\n"));
270         return_PTR ("[NULL Object Descriptor]");
271     }
272 
273     /* These descriptor types share a common area */
274 
275     if ((ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) != ACPI_DESC_TYPE_OPERAND) &&
276         (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) != ACPI_DESC_TYPE_NAMED))
277     {
278         ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
279             "Invalid object descriptor type: 0x%2.2X [%s] (%p)\n",
280             ACPI_GET_DESCRIPTOR_TYPE (ObjDesc),
281             AcpiUtGetDescriptorName (ObjDesc), ObjDesc));
282 
283         return_PTR ("Invalid object");
284     }
285 
286     return_PTR (AcpiUtGetTypeName (ObjDesc->Common.Type));
287 }
288 
289 
290 /*******************************************************************************
291  *
292  * FUNCTION:    AcpiUtGetNodeName
293  *
294  * PARAMETERS:  Object               - A namespace node
295  *
296  * RETURN:      ASCII name of the node
297  *
298  * DESCRIPTION: Validate the node and return the node's ACPI name.
299  *
300  ******************************************************************************/
301 
302 char *
303 AcpiUtGetNodeName (
304     void                    *Object)
305 {
306     ACPI_NAMESPACE_NODE     *Node = (ACPI_NAMESPACE_NODE *) Object;
307 
308 
309     /* Must return a string of exactly 4 characters == ACPI_NAME_SIZE */
310 
311     if (!Object)
312     {
313         return ("NULL");
314     }
315 
316     /* Check for Root node */
317 
318     if ((Object == ACPI_ROOT_OBJECT) ||
319         (Object == AcpiGbl_RootNode))
320     {
321         return ("\"\\\" ");
322     }
323 
324     /* Descriptor must be a namespace node */
325 
326     if (ACPI_GET_DESCRIPTOR_TYPE (Node) != ACPI_DESC_TYPE_NAMED)
327     {
328         return ("####");
329     }
330 
331     /*
332      * Ensure name is valid. The name was validated/repaired when the node
333      * was created, but make sure it has not been corrupted.
334      */
335     AcpiUtRepairName (Node->Name.Ascii);
336 
337     /* Return the name */
338 
339     return (Node->Name.Ascii);
340 }
341 
342 
343 /*******************************************************************************
344  *
345  * FUNCTION:    AcpiUtGetDescriptorName
346  *
347  * PARAMETERS:  Object               - An ACPI object
348  *
349  * RETURN:      Decoded name of the descriptor type
350  *
351  * DESCRIPTION: Validate object and return the descriptor type
352  *
353  ******************************************************************************/
354 
355 /* Printable names of object descriptor types */
356 
357 static const char           *AcpiGbl_DescTypeNames[] =
358 {
359     /* 00 */ "Not a Descriptor",
360     /* 01 */ "Cached",
361     /* 02 */ "State-Generic",
362     /* 03 */ "State-Update",
363     /* 04 */ "State-Package",
364     /* 05 */ "State-Control",
365     /* 06 */ "State-RootParseScope",
366     /* 07 */ "State-ParseScope",
367     /* 08 */ "State-WalkScope",
368     /* 09 */ "State-Result",
369     /* 10 */ "State-Notify",
370     /* 11 */ "State-Thread",
371     /* 12 */ "Walk",
372     /* 13 */ "Parser",
373     /* 14 */ "Operand",
374     /* 15 */ "Node"
375 };
376 
377 
378 char *
379 AcpiUtGetDescriptorName (
380     void                    *Object)
381 {
382 
383     if (!Object)
384     {
385         return ("NULL OBJECT");
386     }
387 
388     if (ACPI_GET_DESCRIPTOR_TYPE (Object) > ACPI_DESC_TYPE_MAX)
389     {
390         return ("Not a Descriptor");
391     }
392 
393     return (ACPI_CAST_PTR (char,
394         AcpiGbl_DescTypeNames[ACPI_GET_DESCRIPTOR_TYPE (Object)]));
395 
396 }
397 
398 
399 /*******************************************************************************
400  *
401  * FUNCTION:    AcpiUtGetReferenceName
402  *
403  * PARAMETERS:  Object               - An ACPI reference object
404  *
405  * RETURN:      Decoded name of the type of reference
406  *
407  * DESCRIPTION: Decode a reference object sub-type to a string.
408  *
409  ******************************************************************************/
410 
411 /* Printable names of reference object sub-types */
412 
413 static const char           *AcpiGbl_RefClassNames[] =
414 {
415     /* 00 */ "Local",
416     /* 01 */ "Argument",
417     /* 02 */ "RefOf",
418     /* 03 */ "Index",
419     /* 04 */ "DdbHandle",
420     /* 05 */ "Named Object",
421     /* 06 */ "Debug"
422 };
423 
424 const char *
425 AcpiUtGetReferenceName (
426     ACPI_OPERAND_OBJECT     *Object)
427 {
428 
429     if (!Object)
430     {
431         return ("NULL Object");
432     }
433 
434     if (ACPI_GET_DESCRIPTOR_TYPE (Object) != ACPI_DESC_TYPE_OPERAND)
435     {
436         return ("Not an Operand object");
437     }
438 
439     if (Object->Common.Type != ACPI_TYPE_LOCAL_REFERENCE)
440     {
441         return ("Not a Reference object");
442     }
443 
444     if (Object->Reference.Class > ACPI_REFCLASS_MAX)
445     {
446         return ("Unknown Reference class");
447     }
448 
449     return (AcpiGbl_RefClassNames[Object->Reference.Class]);
450 }
451 
452 
453 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
454 /*
455  * Strings and procedures used for debug only
456  */
457 
458 /*******************************************************************************
459  *
460  * FUNCTION:    AcpiUtGetMutexName
461  *
462  * PARAMETERS:  MutexId         - The predefined ID for this mutex.
463  *
464  * RETURN:      Decoded name of the internal mutex
465  *
466  * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
467  *
468  ******************************************************************************/
469 
470 /* Names for internal mutex objects, used for debug output */
471 
472 static char                 *AcpiGbl_MutexNames[ACPI_NUM_MUTEX] =
473 {
474     "ACPI_MTX_Interpreter",
475     "ACPI_MTX_Namespace",
476     "ACPI_MTX_Tables",
477     "ACPI_MTX_Events",
478     "ACPI_MTX_Caches",
479     "ACPI_MTX_Memory",
480 };
481 
482 char *
483 AcpiUtGetMutexName (
484     UINT32                  MutexId)
485 {
486 
487     if (MutexId > ACPI_MAX_MUTEX)
488     {
489         return ("Invalid Mutex ID");
490     }
491 
492     return (AcpiGbl_MutexNames[MutexId]);
493 }
494 
495 
496 /*******************************************************************************
497  *
498  * FUNCTION:    AcpiUtGetNotifyName
499  *
500  * PARAMETERS:  NotifyValue     - Value from the Notify() request
501  *
502  * RETURN:      Decoded name for the notify value
503  *
504  * DESCRIPTION: Translate a Notify Value to a notify namestring.
505  *
506  ******************************************************************************/
507 
508 /* Names for Notify() values, used for debug output */
509 
510 static const char           *AcpiGbl_GenericNotify[ACPI_NOTIFY_MAX + 1] =
511 {
512     /* 00 */ "Bus Check",
513     /* 01 */ "Device Check",
514     /* 02 */ "Device Wake",
515     /* 03 */ "Eject Request",
516     /* 04 */ "Device Check Light",
517     /* 05 */ "Frequency Mismatch",
518     /* 06 */ "Bus Mode Mismatch",
519     /* 07 */ "Power Fault",
520     /* 08 */ "Capabilities Check",
521     /* 09 */ "Device PLD Check",
522     /* 0A */ "Reserved",
523     /* 0B */ "System Locality Update",
524     /* 0C */ "Shutdown Request",
525     /* 0D */ "System Resource Affinity Update"
526 };
527 
528 static const char           *AcpiGbl_DeviceNotify[4] =
529 {
530     /* 80 */ "Status Change",
531     /* 81 */ "Information Change",
532     /* 82 */ "Device-Specific Change",
533     /* 83 */ "Device-Specific Change"
534 };
535 
536 static const char           *AcpiGbl_ProcessorNotify[4] =
537 {
538     /* 80 */ "Performance Capability Change",
539     /* 81 */ "C-State Change",
540     /* 82 */ "Throttling Capability Change",
541     /* 83 */ "Device-Specific Change"
542 };
543 
544 static const char           *AcpiGbl_ThermalNotify[4] =
545 {
546     /* 80 */ "Thermal Status Change",
547     /* 81 */ "Thermal Trip Point Change",
548     /* 82 */ "Thermal Device List Change",
549     /* 83 */ "Thermal Relationship Change"
550 };
551 
552 
553 const char *
554 AcpiUtGetNotifyName (
555     UINT32                  NotifyValue,
556     ACPI_OBJECT_TYPE        Type)
557 {
558 
559     /* 00 - 0D are common to all object types */
560 
561     if (NotifyValue <= ACPI_NOTIFY_MAX)
562     {
563         return (AcpiGbl_GenericNotify[NotifyValue]);
564     }
565 
566     /* 0D - 7F are reserved */
567 
568     if (NotifyValue <= ACPI_MAX_SYS_NOTIFY)
569     {
570         return ("Reserved");
571     }
572 
573     /* 80 - 83 are per-object-type */
574 
575     if (NotifyValue <= 0x83)
576     {
577         switch (Type)
578         {
579         case ACPI_TYPE_ANY:
580         case ACPI_TYPE_DEVICE:
581             return (AcpiGbl_DeviceNotify [NotifyValue - 0x80]);
582 
583         case ACPI_TYPE_PROCESSOR:
584             return (AcpiGbl_ProcessorNotify [NotifyValue - 0x80]);
585 
586         case ACPI_TYPE_THERMAL:
587             return (AcpiGbl_ThermalNotify [NotifyValue - 0x80]);
588 
589         default:
590             return ("Target object type does not support notifies");
591         }
592     }
593 
594     /* 84 - BF are device-specific */
595 
596     if (NotifyValue <= ACPI_MAX_DEVICE_SPECIFIC_NOTIFY)
597     {
598         return ("Device-Specific");
599     }
600 
601     /* C0 and above are hardware-specific */
602 
603     return ("Hardware-Specific");
604 }
605 #endif
606 
607 
608 /*******************************************************************************
609  *
610  * FUNCTION:    AcpiUtValidObjectType
611  *
612  * PARAMETERS:  Type            - Object type to be validated
613  *
614  * RETURN:      TRUE if valid object type, FALSE otherwise
615  *
616  * DESCRIPTION: Validate an object type
617  *
618  ******************************************************************************/
619 
620 BOOLEAN
621 AcpiUtValidObjectType (
622     ACPI_OBJECT_TYPE        Type)
623 {
624 
625     if (Type > ACPI_TYPE_LOCAL_MAX)
626     {
627         /* Note: Assumes all TYPEs are contiguous (external/local) */
628 
629         return (FALSE);
630     }
631 
632     return (TRUE);
633 }
634