nsinit.c revision 193529
1/******************************************************************************
2 *
3 * Module Name: nsinit - namespace initialization
4 *
5 *****************************************************************************/
6
7/******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2009, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights.  You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code.  No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision.  In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change.  Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee.  Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution.  In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government.  In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************/
115
116
117#define __NSXFINIT_C__
118
119#include <contrib/dev/acpica/include/acpi.h>
120#include <contrib/dev/acpica/include/accommon.h>
121#include <contrib/dev/acpica/include/acnamesp.h>
122#include <contrib/dev/acpica/include/acdispat.h>
123#include <contrib/dev/acpica/include/acinterp.h>
124
125#define _COMPONENT          ACPI_NAMESPACE
126        ACPI_MODULE_NAME    ("nsinit")
127
128/* Local prototypes */
129
130static ACPI_STATUS
131AcpiNsInitOneObject (
132    ACPI_HANDLE             ObjHandle,
133    UINT32                  Level,
134    void                    *Context,
135    void                    **ReturnValue);
136
137static ACPI_STATUS
138AcpiNsInitOneDevice (
139    ACPI_HANDLE             ObjHandle,
140    UINT32                  NestingLevel,
141    void                    *Context,
142    void                    **ReturnValue);
143
144static ACPI_STATUS
145AcpiNsFindIniMethods (
146    ACPI_HANDLE             ObjHandle,
147    UINT32                  NestingLevel,
148    void                    *Context,
149    void                    **ReturnValue);
150
151
152/*******************************************************************************
153 *
154 * FUNCTION:    AcpiNsInitializeObjects
155 *
156 * PARAMETERS:  None
157 *
158 * RETURN:      Status
159 *
160 * DESCRIPTION: Walk the entire namespace and perform any necessary
161 *              initialization on the objects found therein
162 *
163 ******************************************************************************/
164
165ACPI_STATUS
166AcpiNsInitializeObjects (
167    void)
168{
169    ACPI_STATUS             Status;
170    ACPI_INIT_WALK_INFO     Info;
171
172
173    ACPI_FUNCTION_TRACE (NsInitializeObjects);
174
175
176    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
177        "**** Starting initialization of namespace objects ****\n"));
178    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
179        "Completing Region/Field/Buffer/Package initialization:"));
180
181    /* Set all init info to zero */
182
183    ACPI_MEMSET (&Info, 0, sizeof (ACPI_INIT_WALK_INFO));
184
185    /* Walk entire namespace from the supplied root */
186
187    Status = AcpiWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
188                                ACPI_UINT32_MAX, AcpiNsInitOneObject,
189                                &Info, NULL);
190    if (ACPI_FAILURE (Status))
191    {
192        ACPI_EXCEPTION ((AE_INFO, Status, "During WalkNamespace"));
193    }
194
195    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
196        "\nInitialized %hd/%hd Regions %hd/%hd Fields %hd/%hd "
197        "Buffers %hd/%hd Packages (%hd nodes)\n",
198        Info.OpRegionInit,  Info.OpRegionCount,
199        Info.FieldInit,     Info.FieldCount,
200        Info.BufferInit,    Info.BufferCount,
201        Info.PackageInit,   Info.PackageCount, Info.ObjectCount));
202
203    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
204        "%hd Control Methods found\n", Info.MethodCount));
205    ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
206        "%hd Op Regions found\n", Info.OpRegionCount));
207
208    return_ACPI_STATUS (AE_OK);
209}
210
211
212/*******************************************************************************
213 *
214 * FUNCTION:    AcpiNsInitializeDevices
215 *
216 * PARAMETERS:  None
217 *
218 * RETURN:      ACPI_STATUS
219 *
220 * DESCRIPTION: Walk the entire namespace and initialize all ACPI devices.
221 *              This means running _INI on all present devices.
222 *
223 *              Note: We install PCI config space handler on region access,
224 *              not here.
225 *
226 ******************************************************************************/
227
228ACPI_STATUS
229AcpiNsInitializeDevices (
230    void)
231{
232    ACPI_STATUS             Status;
233    ACPI_DEVICE_WALK_INFO   Info;
234
235
236    ACPI_FUNCTION_TRACE (NsInitializeDevices);
237
238
239    /* Init counters */
240
241    Info.DeviceCount = 0;
242    Info.Num_STA = 0;
243    Info.Num_INI = 0;
244
245    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
246        "Initializing Device/Processor/Thermal objects "
247        "by executing _INI methods:"));
248
249    /* Tree analysis: find all subtrees that contain _INI methods */
250
251    Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
252                ACPI_UINT32_MAX, FALSE, AcpiNsFindIniMethods, &Info, NULL);
253    if (ACPI_FAILURE (Status))
254    {
255        goto ErrorExit;
256    }
257
258    /* Allocate the evaluation information block */
259
260    Info.EvaluateInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
261    if (!Info.EvaluateInfo)
262    {
263        Status = AE_NO_MEMORY;
264        goto ErrorExit;
265    }
266
267    /* Walk namespace to execute all _INIs on present devices */
268
269    Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
270                ACPI_UINT32_MAX, FALSE, AcpiNsInitOneDevice, &Info, NULL);
271
272    ACPI_FREE (Info.EvaluateInfo);
273    if (ACPI_FAILURE (Status))
274    {
275        goto ErrorExit;
276    }
277
278    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
279        "\nExecuted %hd _INI methods requiring %hd _STA executions "
280        "(examined %hd objects)\n",
281        Info.Num_INI, Info.Num_STA, Info.DeviceCount));
282
283    return_ACPI_STATUS (Status);
284
285
286ErrorExit:
287    ACPI_EXCEPTION ((AE_INFO, Status, "During device initialization"));
288    return_ACPI_STATUS (Status);
289}
290
291
292/*******************************************************************************
293 *
294 * FUNCTION:    AcpiNsInitOneObject
295 *
296 * PARAMETERS:  ObjHandle       - Node
297 *              Level           - Current nesting level
298 *              Context         - Points to a init info struct
299 *              ReturnValue     - Not used
300 *
301 * RETURN:      Status
302 *
303 * DESCRIPTION: Callback from AcpiWalkNamespace.  Invoked for every object
304 *              within the  namespace.
305 *
306 *              Currently, the only objects that require initialization are:
307 *              1) Methods
308 *              2) Op Regions
309 *
310 ******************************************************************************/
311
312static ACPI_STATUS
313AcpiNsInitOneObject (
314    ACPI_HANDLE             ObjHandle,
315    UINT32                  Level,
316    void                    *Context,
317    void                    **ReturnValue)
318{
319    ACPI_OBJECT_TYPE        Type;
320    ACPI_STATUS             Status = AE_OK;
321    ACPI_INIT_WALK_INFO     *Info = (ACPI_INIT_WALK_INFO *) Context;
322    ACPI_NAMESPACE_NODE     *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
323    ACPI_OPERAND_OBJECT     *ObjDesc;
324
325
326    ACPI_FUNCTION_NAME (NsInitOneObject);
327
328
329    Info->ObjectCount++;
330
331    /* And even then, we are only interested in a few object types */
332
333    Type = AcpiNsGetType (ObjHandle);
334    ObjDesc = AcpiNsGetAttachedObject (Node);
335    if (!ObjDesc)
336    {
337        return (AE_OK);
338    }
339
340    /* Increment counters for object types we are looking for */
341
342    switch (Type)
343    {
344    case ACPI_TYPE_REGION:
345        Info->OpRegionCount++;
346        break;
347
348    case ACPI_TYPE_BUFFER_FIELD:
349        Info->FieldCount++;
350        break;
351
352    case ACPI_TYPE_LOCAL_BANK_FIELD:
353        Info->FieldCount++;
354        break;
355
356    case ACPI_TYPE_BUFFER:
357        Info->BufferCount++;
358        break;
359
360    case ACPI_TYPE_PACKAGE:
361        Info->PackageCount++;
362        break;
363
364    default:
365
366        /* No init required, just exit now */
367        return (AE_OK);
368    }
369
370    /* If the object is already initialized, nothing else to do */
371
372    if (ObjDesc->Common.Flags & AOPOBJ_DATA_VALID)
373    {
374        return (AE_OK);
375    }
376
377    /* Must lock the interpreter before executing AML code */
378
379    AcpiExEnterInterpreter ();
380
381    /*
382     * Each of these types can contain executable AML code within the
383     * declaration.
384     */
385    switch (Type)
386    {
387    case ACPI_TYPE_REGION:
388
389        Info->OpRegionInit++;
390        Status = AcpiDsGetRegionArguments (ObjDesc);
391        break;
392
393    case ACPI_TYPE_BUFFER_FIELD:
394
395        Info->FieldInit++;
396        Status = AcpiDsGetBufferFieldArguments (ObjDesc);
397        break;
398
399    case ACPI_TYPE_LOCAL_BANK_FIELD:
400
401        Info->FieldInit++;
402        Status = AcpiDsGetBankFieldArguments (ObjDesc);
403        break;
404
405    case ACPI_TYPE_BUFFER:
406
407        Info->BufferInit++;
408        Status = AcpiDsGetBufferArguments (ObjDesc);
409        break;
410
411    case ACPI_TYPE_PACKAGE:
412
413        Info->PackageInit++;
414        Status = AcpiDsGetPackageArguments (ObjDesc);
415        break;
416
417    default:
418        /* No other types can get here */
419        break;
420    }
421
422    if (ACPI_FAILURE (Status))
423    {
424        ACPI_EXCEPTION ((AE_INFO, Status,
425            "Could not execute arguments for [%4.4s] (%s)",
426            AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Type)));
427    }
428
429    /*
430     * Print a dot for each object unless we are going to print the entire
431     * pathname
432     */
433    if (!(AcpiDbgLevel & ACPI_LV_INIT_NAMES))
434    {
435        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "."));
436    }
437
438    /*
439     * We ignore errors from above, and always return OK, since we don't want
440     * to abort the walk on any single error.
441     */
442    AcpiExExitInterpreter ();
443    return (AE_OK);
444}
445
446
447/*******************************************************************************
448 *
449 * FUNCTION:    AcpiNsFindIniMethods
450 *
451 * PARAMETERS:  ACPI_WALK_CALLBACK
452 *
453 * RETURN:      ACPI_STATUS
454 *
455 * DESCRIPTION: Called during namespace walk. Finds objects named _INI under
456 *              device/processor/thermal objects, and marks the entire subtree
457 *              with a SUBTREE_HAS_INI flag. This flag is used during the
458 *              subsequent device initialization walk to avoid entire subtrees
459 *              that do not contain an _INI.
460 *
461 ******************************************************************************/
462
463static ACPI_STATUS
464AcpiNsFindIniMethods (
465    ACPI_HANDLE             ObjHandle,
466    UINT32                  NestingLevel,
467    void                    *Context,
468    void                    **ReturnValue)
469{
470    ACPI_DEVICE_WALK_INFO   *Info = ACPI_CAST_PTR (ACPI_DEVICE_WALK_INFO, Context);
471    ACPI_NAMESPACE_NODE     *Node;
472    ACPI_NAMESPACE_NODE     *ParentNode;
473
474
475    /* Keep count of device/processor/thermal objects */
476
477    Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
478    if ((Node->Type == ACPI_TYPE_DEVICE)    ||
479        (Node->Type == ACPI_TYPE_PROCESSOR) ||
480        (Node->Type == ACPI_TYPE_THERMAL))
481    {
482        Info->DeviceCount++;
483        return (AE_OK);
484    }
485
486    /* We are only looking for methods named _INI */
487
488    if (!ACPI_COMPARE_NAME (Node->Name.Ascii, METHOD_NAME__INI))
489    {
490        return (AE_OK);
491    }
492
493    /*
494     * The only _INI methods that we care about are those that are
495     * present under Device, Processor, and Thermal objects.
496     */
497    ParentNode = AcpiNsGetParentNode (Node);
498    switch (ParentNode->Type)
499    {
500    case ACPI_TYPE_DEVICE:
501    case ACPI_TYPE_PROCESSOR:
502    case ACPI_TYPE_THERMAL:
503
504        /* Mark parent and bubble up the INI present flag to the root */
505
506        while (ParentNode)
507        {
508            ParentNode->Flags |= ANOBJ_SUBTREE_HAS_INI;
509            ParentNode = AcpiNsGetParentNode (ParentNode);
510        }
511        break;
512
513    default:
514        break;
515    }
516
517    return (AE_OK);
518}
519
520
521/*******************************************************************************
522 *
523 * FUNCTION:    AcpiNsInitOneDevice
524 *
525 * PARAMETERS:  ACPI_WALK_CALLBACK
526 *
527 * RETURN:      ACPI_STATUS
528 *
529 * DESCRIPTION: This is called once per device soon after ACPI is enabled
530 *              to initialize each device. It determines if the device is
531 *              present, and if so, calls _INI.
532 *
533 ******************************************************************************/
534
535static ACPI_STATUS
536AcpiNsInitOneDevice (
537    ACPI_HANDLE             ObjHandle,
538    UINT32                  NestingLevel,
539    void                    *Context,
540    void                    **ReturnValue)
541{
542    ACPI_DEVICE_WALK_INFO   *WalkInfo = ACPI_CAST_PTR (ACPI_DEVICE_WALK_INFO, Context);
543    ACPI_EVALUATE_INFO      *Info = WalkInfo->EvaluateInfo;
544    UINT32                  Flags;
545    ACPI_STATUS             Status;
546    ACPI_NAMESPACE_NODE     *DeviceNode;
547
548
549    ACPI_FUNCTION_TRACE (NsInitOneDevice);
550
551
552    /* We are interested in Devices, Processors and ThermalZones only */
553
554    DeviceNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
555    if ((DeviceNode->Type != ACPI_TYPE_DEVICE)    &&
556        (DeviceNode->Type != ACPI_TYPE_PROCESSOR) &&
557        (DeviceNode->Type != ACPI_TYPE_THERMAL))
558    {
559        return_ACPI_STATUS (AE_OK);
560    }
561
562    /*
563     * Because of an earlier namespace analysis, all subtrees that contain an
564     * _INI method are tagged.
565     *
566     * If this device subtree does not contain any _INI methods, we
567     * can exit now and stop traversing this entire subtree.
568     */
569    if (!(DeviceNode->Flags & ANOBJ_SUBTREE_HAS_INI))
570    {
571        return_ACPI_STATUS (AE_CTRL_DEPTH);
572    }
573
574    /*
575     * Run _STA to determine if this device is present and functioning. We
576     * must know this information for two important reasons (from ACPI spec):
577     *
578     * 1) We can only run _INI if the device is present.
579     * 2) We must abort the device tree walk on this subtree if the device is
580     *    not present and is not functional (we will not examine the children)
581     *
582     * The _STA method is not required to be present under the device, we
583     * assume the device is present if _STA does not exist.
584     */
585    ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
586        ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__STA));
587
588    Status = AcpiUtExecute_STA (DeviceNode, &Flags);
589    if (ACPI_FAILURE (Status))
590    {
591        /* Ignore error and move on to next device */
592
593        return_ACPI_STATUS (AE_OK);
594    }
595
596    /*
597     * Flags == -1 means that _STA was not found. In this case, we assume that
598     * the device is both present and functional.
599     *
600     * From the ACPI spec, description of _STA:
601     *
602     * "If a device object (including the processor object) does not have an
603     * _STA object, then OSPM assumes that all of the above bits are set (in
604     * other words, the device is present, ..., and functioning)"
605     */
606    if (Flags != ACPI_UINT32_MAX)
607    {
608        WalkInfo->Num_STA++;
609    }
610
611    /*
612     * Examine the PRESENT and FUNCTIONING status bits
613     *
614     * Note: ACPI spec does not seem to specify behavior for the present but
615     * not functioning case, so we assume functioning if present.
616     */
617    if (!(Flags & ACPI_STA_DEVICE_PRESENT))
618    {
619        /* Device is not present, we must examine the Functioning bit */
620
621        if (Flags & ACPI_STA_DEVICE_FUNCTIONING)
622        {
623            /*
624             * Device is not present but is "functioning". In this case,
625             * we will not run _INI, but we continue to examine the children
626             * of this device.
627             *
628             * From the ACPI spec, description of _STA: (Note - no mention
629             * of whether to run _INI or not on the device in question)
630             *
631             * "_STA may return bit 0 clear (not present) with bit 3 set
632             * (device is functional). This case is used to indicate a valid
633             * device for which no device driver should be loaded (for example,
634             * a bridge device.) Children of this device may be present and
635             * valid. OSPM should continue enumeration below a device whose
636             * _STA returns this bit combination"
637             */
638            return_ACPI_STATUS (AE_OK);
639        }
640        else
641        {
642            /*
643             * Device is not present and is not functioning. We must abort the
644             * walk of this subtree immediately -- don't look at the children
645             * of such a device.
646             *
647             * From the ACPI spec, description of _INI:
648             *
649             * "If the _STA method indicates that the device is not present,
650             * OSPM will not run the _INI and will not examine the children
651             * of the device for _INI methods"
652             */
653            return_ACPI_STATUS (AE_CTRL_DEPTH);
654        }
655    }
656
657    /*
658     * The device is present or is assumed present if no _STA exists.
659     * Run the _INI if it exists (not required to exist)
660     *
661     * Note: We know there is an _INI within this subtree, but it may not be
662     * under this particular device, it may be lower in the branch.
663     */
664    ACPI_DEBUG_EXEC (AcpiUtDisplayInitPathname (
665        ACPI_TYPE_METHOD, DeviceNode, METHOD_NAME__INI));
666
667    Info->PrefixNode = DeviceNode;
668    Info->Pathname = METHOD_NAME__INI;
669    Info->Parameters = NULL;
670    Info->Flags = ACPI_IGNORE_RETURN_VALUE;
671
672    Status = AcpiNsEvaluate (Info);
673    if (ACPI_SUCCESS (Status))
674    {
675        WalkInfo->Num_INI++;
676
677        if ((AcpiDbgLevel <= ACPI_LV_ALL_EXCEPTIONS) &&
678            (!(AcpiDbgLevel & ACPI_LV_INFO)))
679        {
680            ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "."));
681        }
682    }
683
684#ifdef ACPI_DEBUG_OUTPUT
685    else if (Status != AE_NOT_FOUND)
686    {
687        /* Ignore error and move on to next device */
688
689        char *ScopeName = AcpiNsGetExternalPathname (Info->ResolvedNode);
690
691        ACPI_EXCEPTION ((AE_INFO, Status, "during %s._INI execution",
692            ScopeName));
693        ACPI_FREE (ScopeName);
694    }
695#endif
696
697    /* Ignore errors from above */
698
699    Status = AE_OK;
700
701    /*
702     * The _INI method has been run if present; call the Global Initialization
703     * Handler for this device.
704     */
705    if (AcpiGbl_InitHandler)
706    {
707        Status = AcpiGbl_InitHandler (DeviceNode, ACPI_INIT_DEVICE_INI);
708    }
709
710    return_ACPI_STATUS (Status);
711}
712