xref: /illumos-gate/usr/src/common/acpica/events/evgpeinit.c (revision 35786f6866ae52207d0f1a25fe7ca5f652f32ce0)
1 /******************************************************************************
2  *
3  * Module Name: evgpeinit - System GPE initialization and update
4  *
5  *****************************************************************************/
6 
7 /******************************************************************************
8  *
9  * 1. Copyright Notice
10  *
11  * Some or all of this work - Copyright (c) 1999 - 2018, 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  * Alternatively, you may choose to be licensed under the terms of the
117  * following license:
118  *
119  * Redistribution and use in source and binary forms, with or without
120  * modification, are permitted provided that the following conditions
121  * are met:
122  * 1. Redistributions of source code must retain the above copyright
123  *    notice, this list of conditions, and the following disclaimer,
124  *    without modification.
125  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126  *    substantially similar to the "NO WARRANTY" disclaimer below
127  *    ("Disclaimer") and any redistribution must be conditioned upon
128  *    including a substantially similar Disclaimer requirement for further
129  *    binary redistribution.
130  * 3. Neither the names of the above-listed copyright holders nor the names
131  *    of any contributors may be used to endorse or promote products derived
132  *    from this software without specific prior written permission.
133  *
134  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145  *
146  * Alternatively, you may choose to be licensed under the terms of the
147  * GNU General Public License ("GPL") version 2 as published by the Free
148  * Software Foundation.
149  *
150  *****************************************************************************/
151 
152 #include "acpi.h"
153 #include "accommon.h"
154 #include "acevents.h"
155 #include "acnamesp.h"
156 
157 #define _COMPONENT          ACPI_EVENTS
158         ACPI_MODULE_NAME    ("evgpeinit")
159 
160 #if (!ACPI_REDUCED_HARDWARE) /* Entire module */
161 
162 /*
163  * Note: History of _PRW support in ACPICA
164  *
165  * Originally (2000 - 2010), the GPE initialization code performed a walk of
166  * the entire namespace to execute the _PRW methods and detect all GPEs
167  * capable of waking the system.
168  *
169  * As of 10/2010, the _PRW method execution has been removed since it is
170  * actually unnecessary. The host OS must in fact execute all _PRW methods
171  * in order to identify the device/power-resource dependencies. We now put
172  * the onus on the host OS to identify the wake GPEs as part of this process
173  * and to inform ACPICA of these GPEs via the AcpiSetupGpeForWake interface. This
174  * not only reduces the complexity of the ACPICA initialization code, but in
175  * some cases (on systems with very large namespaces) it should reduce the
176  * kernel boot time as well.
177  */
178 
179 /*******************************************************************************
180  *
181  * FUNCTION:    AcpiEvGpeInitialize
182  *
183  * PARAMETERS:  None
184  *
185  * RETURN:      Status
186  *
187  * DESCRIPTION: Initialize the GPE data structures and the FADT GPE 0/1 blocks
188  *
189  ******************************************************************************/
190 
191 ACPI_STATUS
AcpiEvGpeInitialize(void)192 AcpiEvGpeInitialize (
193     void)
194 {
195     UINT32                  RegisterCount0 = 0;
196     UINT32                  RegisterCount1 = 0;
197     UINT32                  GpeNumberMax = 0;
198     ACPI_STATUS             Status;
199 
200 
201     ACPI_FUNCTION_TRACE (EvGpeInitialize);
202 
203 
204     ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
205         "Initializing General Purpose Events (GPEs):\n"));
206 
207     Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
208     if (ACPI_FAILURE (Status))
209     {
210         return_ACPI_STATUS (Status);
211     }
212 
213     /*
214      * Initialize the GPE Block(s) defined in the FADT
215      *
216      * Why the GPE register block lengths are divided by 2:  From the ACPI
217      * Spec, section "General-Purpose Event Registers", we have:
218      *
219      * "Each register block contains two registers of equal length
220      *  GPEx_STS and GPEx_EN (where x is 0 or 1). The length of the
221      *  GPE0_STS and GPE0_EN registers is equal to half the GPE0_LEN
222      *  The length of the GPE1_STS and GPE1_EN registers is equal to
223      *  half the GPE1_LEN. If a generic register block is not supported
224      *  then its respective block pointer and block length values in the
225      *  FADT table contain zeros. The GPE0_LEN and GPE1_LEN do not need
226      *  to be the same size."
227      */
228 
229     /*
230      * Determine the maximum GPE number for this machine.
231      *
232      * Note: both GPE0 and GPE1 are optional, and either can exist without
233      * the other.
234      *
235      * If EITHER the register length OR the block address are zero, then that
236      * particular block is not supported.
237      */
238     if (AcpiGbl_FADT.Gpe0BlockLength &&
239         AcpiGbl_FADT.XGpe0Block.Address)
240     {
241         /* GPE block 0 exists (has both length and address > 0) */
242 
243         RegisterCount0 = (UINT16) (AcpiGbl_FADT.Gpe0BlockLength / 2);
244         GpeNumberMax = (RegisterCount0 * ACPI_GPE_REGISTER_WIDTH) - 1;
245 
246         /* Install GPE Block 0 */
247 
248         Status = AcpiEvCreateGpeBlock (AcpiGbl_FadtGpeDevice,
249             AcpiGbl_FADT.XGpe0Block.Address,
250             AcpiGbl_FADT.XGpe0Block.SpaceId,
251             RegisterCount0, 0,
252             AcpiGbl_FADT.SciInterrupt, &AcpiGbl_GpeFadtBlocks[0]);
253 
254         if (ACPI_FAILURE (Status))
255         {
256             ACPI_EXCEPTION ((AE_INFO, Status,
257                 "Could not create GPE Block 0"));
258         }
259     }
260 
261     if (AcpiGbl_FADT.Gpe1BlockLength &&
262         AcpiGbl_FADT.XGpe1Block.Address)
263     {
264         /* GPE block 1 exists (has both length and address > 0) */
265 
266         RegisterCount1 = (UINT16) (AcpiGbl_FADT.Gpe1BlockLength / 2);
267 
268         /* Check for GPE0/GPE1 overlap (if both banks exist) */
269 
270         if ((RegisterCount0) &&
271             (GpeNumberMax >= AcpiGbl_FADT.Gpe1Base))
272         {
273             ACPI_ERROR ((AE_INFO,
274                 "GPE0 block (GPE 0 to %u) overlaps the GPE1 block "
275                 "(GPE %u to %u) - Ignoring GPE1",
276                 GpeNumberMax, AcpiGbl_FADT.Gpe1Base,
277                 AcpiGbl_FADT.Gpe1Base +
278                 ((RegisterCount1 * ACPI_GPE_REGISTER_WIDTH) - 1)));
279 
280             /* Ignore GPE1 block by setting the register count to zero */
281 
282             RegisterCount1 = 0;
283         }
284         else
285         {
286             /* Install GPE Block 1 */
287 
288             Status = AcpiEvCreateGpeBlock (AcpiGbl_FadtGpeDevice,
289                 AcpiGbl_FADT.XGpe1Block.Address,
290                 AcpiGbl_FADT.XGpe1Block.SpaceId,
291                 RegisterCount1,
292                 AcpiGbl_FADT.Gpe1Base,
293                 AcpiGbl_FADT.SciInterrupt, &AcpiGbl_GpeFadtBlocks[1]);
294 
295             if (ACPI_FAILURE (Status))
296             {
297                 ACPI_EXCEPTION ((AE_INFO, Status,
298                     "Could not create GPE Block 1"));
299             }
300 
301             /*
302              * GPE0 and GPE1 do not have to be contiguous in the GPE number
303              * space. However, GPE0 always starts at GPE number zero.
304              */
305             GpeNumberMax = AcpiGbl_FADT.Gpe1Base +
306                 ((RegisterCount1 * ACPI_GPE_REGISTER_WIDTH) - 1);
307         }
308     }
309 
310     /* Exit if there are no GPE registers */
311 
312     if ((RegisterCount0 + RegisterCount1) == 0)
313     {
314         /* GPEs are not required by ACPI, this is OK */
315 
316         ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
317             "There are no GPE blocks defined in the FADT\n"));
318         Status = AE_OK;
319         goto Cleanup;
320     }
321 
322 
323 Cleanup:
324     (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
325     return_ACPI_STATUS (AE_OK);
326 }
327 
328 
329 /*******************************************************************************
330  *
331  * FUNCTION:    AcpiEvUpdateGpes
332  *
333  * PARAMETERS:  TableOwnerId        - ID of the newly-loaded ACPI table
334  *
335  * RETURN:      None
336  *
337  * DESCRIPTION: Check for new GPE methods (_Lxx/_Exx) made available as a
338  *              result of a Load() or LoadTable() operation. If new GPE
339  *              methods have been installed, register the new methods.
340  *
341  ******************************************************************************/
342 
343 void
AcpiEvUpdateGpes(ACPI_OWNER_ID TableOwnerId)344 AcpiEvUpdateGpes (
345     ACPI_OWNER_ID           TableOwnerId)
346 {
347     ACPI_GPE_XRUPT_INFO     *GpeXruptInfo;
348     ACPI_GPE_BLOCK_INFO     *GpeBlock;
349     ACPI_GPE_WALK_INFO      WalkInfo;
350     ACPI_STATUS             Status = AE_OK;
351 
352 
353     /*
354      * Find any _Lxx/_Exx GPE methods that have just been loaded.
355      *
356      * Any GPEs that correspond to new _Lxx/_Exx methods are immediately
357      * enabled.
358      *
359      * Examine the namespace underneath each GpeDevice within the
360      * GpeBlock lists.
361      */
362     Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
363     if (ACPI_FAILURE (Status))
364     {
365         return;
366     }
367 
368     WalkInfo.Count = 0;
369     WalkInfo.OwnerId = TableOwnerId;
370     WalkInfo.ExecuteByOwnerId = TRUE;
371 
372     /* Walk the interrupt level descriptor list */
373 
374     GpeXruptInfo = AcpiGbl_GpeXruptListHead;
375     while (GpeXruptInfo)
376     {
377         /* Walk all Gpe Blocks attached to this interrupt level */
378 
379         GpeBlock = GpeXruptInfo->GpeBlockListHead;
380         while (GpeBlock)
381         {
382             WalkInfo.GpeBlock = GpeBlock;
383             WalkInfo.GpeDevice = GpeBlock->Node;
384 
385             Status = AcpiNsWalkNamespace (ACPI_TYPE_METHOD,
386                 WalkInfo.GpeDevice, ACPI_UINT32_MAX,
387                 ACPI_NS_WALK_NO_UNLOCK, AcpiEvMatchGpeMethod,
388                 NULL, &WalkInfo, NULL);
389             if (ACPI_FAILURE (Status))
390             {
391                 ACPI_EXCEPTION ((AE_INFO, Status,
392                     "While decoding _Lxx/_Exx methods"));
393             }
394 
395             GpeBlock = GpeBlock->Next;
396         }
397 
398         GpeXruptInfo = GpeXruptInfo->Next;
399     }
400 
401     if (WalkInfo.Count)
402     {
403         ACPI_INFO (("Enabled %u new GPEs", WalkInfo.Count));
404     }
405 
406     (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
407     return;
408 }
409 
410 
411 /*******************************************************************************
412  *
413  * FUNCTION:    AcpiEvMatchGpeMethod
414  *
415  * PARAMETERS:  Callback from WalkNamespace
416  *
417  * RETURN:      Status
418  *
419  * DESCRIPTION: Called from AcpiWalkNamespace. Expects each object to be a
420  *              control method under the _GPE portion of the namespace.
421  *              Extract the name and GPE type from the object, saving this
422  *              information for quick lookup during GPE dispatch. Allows a
423  *              per-OwnerId evaluation if ExecuteByOwnerId is TRUE in the
424  *              WalkInfo parameter block.
425  *
426  *              The name of each GPE control method is of the form:
427  *              "_Lxx" or "_Exx", where:
428  *                  L      - means that the GPE is level triggered
429  *                  E      - means that the GPE is edge triggered
430  *                  xx     - is the GPE number [in HEX]
431  *
432  * If WalkInfo->ExecuteByOwnerId is TRUE, we only execute examine GPE methods
433  * with that owner.
434  *
435  ******************************************************************************/
436 
437 ACPI_STATUS
AcpiEvMatchGpeMethod(ACPI_HANDLE ObjHandle,UINT32 Level,void * Context,void ** ReturnValue)438 AcpiEvMatchGpeMethod (
439     ACPI_HANDLE             ObjHandle,
440     UINT32                  Level,
441     void                    *Context,
442     void                    **ReturnValue)
443 {
444     ACPI_NAMESPACE_NODE     *MethodNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
445     ACPI_GPE_WALK_INFO      *WalkInfo = ACPI_CAST_PTR (ACPI_GPE_WALK_INFO, Context);
446     ACPI_GPE_EVENT_INFO     *GpeEventInfo;
447     ACPI_STATUS             Status;
448     UINT32                  GpeNumber;
449     UINT8                   TempGpeNumber;
450     char                    Name[ACPI_NAME_SIZE + 1];
451     UINT8                   Type;
452 
453 
454     ACPI_FUNCTION_TRACE (EvMatchGpeMethod);
455 
456 
457     /* Check if requested OwnerId matches this OwnerId */
458 
459     if ((WalkInfo->ExecuteByOwnerId) &&
460         (MethodNode->OwnerId != WalkInfo->OwnerId))
461     {
462         return_ACPI_STATUS (AE_OK);
463     }
464 
465     /*
466      * Match and decode the _Lxx and _Exx GPE method names
467      *
468      * 1) Extract the method name and null terminate it
469      */
470     ACPI_MOVE_32_TO_32 (Name, &MethodNode->Name.Integer);
471     Name[ACPI_NAME_SIZE] = 0;
472 
473     /* 2) Name must begin with an underscore */
474 
475     if (Name[0] != '_')
476     {
477         return_ACPI_STATUS (AE_OK); /* Ignore this method */
478     }
479 
480     /*
481      * 3) Edge/Level determination is based on the 2nd character
482      *    of the method name
483      */
484     switch (Name[1])
485     {
486     case 'L':
487 
488         Type = ACPI_GPE_LEVEL_TRIGGERED;
489         break;
490 
491     case 'E':
492 
493         Type = ACPI_GPE_EDGE_TRIGGERED;
494         break;
495 
496     default:
497 
498         /* Unknown method type, just ignore it */
499 
500         ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
501             "Ignoring unknown GPE method type: %s "
502             "(name not of form _Lxx or _Exx)", Name));
503         return_ACPI_STATUS (AE_OK);
504     }
505 
506     /* 4) The last two characters of the name are the hex GPE Number */
507 
508     Status = AcpiUtAsciiToHexByte (&Name[2], &TempGpeNumber);
509     if (ACPI_FAILURE (Status))
510     {
511         /* Conversion failed; invalid method, just ignore it */
512 
513         ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
514             "Could not extract GPE number from name: %s "
515             "(name is not of form _Lxx or _Exx)", Name));
516         return_ACPI_STATUS (AE_OK);
517     }
518 
519     /* Ensure that we have a valid GPE number for this GPE block */
520 
521     GpeNumber = (UINT32) TempGpeNumber;
522     GpeEventInfo = AcpiEvLowGetGpeInfo (GpeNumber, WalkInfo->GpeBlock);
523     if (!GpeEventInfo)
524     {
525         /*
526          * This GpeNumber is not valid for this GPE block, just ignore it.
527          * However, it may be valid for a different GPE block, since GPE0
528          * and GPE1 methods both appear under \_GPE.
529          */
530         return_ACPI_STATUS (AE_OK);
531     }
532 
533     if ((ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) ==
534             ACPI_GPE_DISPATCH_HANDLER) ||
535         (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) ==
536             ACPI_GPE_DISPATCH_RAW_HANDLER))
537     {
538         /* If there is already a handler, ignore this GPE method */
539 
540         return_ACPI_STATUS (AE_OK);
541     }
542 
543     if (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) ==
544         ACPI_GPE_DISPATCH_METHOD)
545     {
546         /*
547          * If there is already a method, ignore this method. But check
548          * for a type mismatch (if both the _Lxx AND _Exx exist)
549          */
550         if (Type != (GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK))
551         {
552             ACPI_ERROR ((AE_INFO,
553                 "For GPE 0x%.2X, found both _L%2.2X and _E%2.2X methods",
554                 GpeNumber, GpeNumber, GpeNumber));
555         }
556         return_ACPI_STATUS (AE_OK);
557     }
558 
559     /* Disable the GPE in case it's been enabled already. */
560 
561     (void) AcpiHwLowSetGpe (GpeEventInfo, ACPI_GPE_DISABLE);
562 
563     /*
564      * Add the GPE information from above to the GpeEventInfo block for
565      * use during dispatch of this GPE.
566      */
567     GpeEventInfo->Flags &= ~(ACPI_GPE_DISPATCH_MASK);
568     GpeEventInfo->Flags |= (UINT8) (Type | ACPI_GPE_DISPATCH_METHOD);
569     GpeEventInfo->Dispatch.MethodNode = MethodNode;
570 
571     ACPI_DEBUG_PRINT ((ACPI_DB_LOAD,
572         "Registered GPE method %s as GPE number 0x%.2X\n",
573         Name, GpeNumber));
574     return_ACPI_STATUS (AE_OK);
575 }
576 
577 #endif /* !ACPI_REDUCED_HARDWARE */
578