1/******************************************************************************
2 *
3 * Module Name: aslmapoutput - Output/emit the resource descriptor/device maps
4 *
5 *****************************************************************************/
6
7/******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2020, 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 <contrib/dev/acpica/include/acpi.h>
153#include <contrib/dev/acpica/include/accommon.h>
154#include <contrib/dev/acpica/include/acapps.h>
155#include <contrib/dev/acpica/compiler/aslcompiler.h>
156#include "aslcompiler.y.h"
157#include <contrib/dev/acpica/include/acinterp.h>
158#include <contrib/dev/acpica/include/acparser.h>
159#include <contrib/dev/acpica/include/acnamesp.h>
160#include <contrib/dev/acpica/include/amlcode.h>
161
162/* This module used for application-level code only */
163
164#define _COMPONENT          ACPI_COMPILER
165        ACPI_MODULE_NAME    ("aslmapoutput")
166
167/* Local prototypes */
168
169static void
170MpEmitGpioInfo (
171    void);
172
173static void
174MpEmitSerialInfo (
175    void);
176
177static void
178MpEmitDeviceTree (
179    void);
180
181static ACPI_STATUS
182MpEmitOneDevice (
183    ACPI_HANDLE             ObjHandle,
184    UINT32                  NestingLevel,
185    void                    *Context,
186    void                    **ReturnValue);
187
188static void
189MpXrefDevices (
190    ACPI_GPIO_INFO          *Info);
191
192static ACPI_STATUS
193MpNamespaceXrefBegin (
194    ACPI_PARSE_OBJECT       *Op,
195    UINT32                  Level,
196    void                    *Context);
197
198
199/* Strings used to decode flag bits */
200
201const char                  *DirectionDecode[] =
202{
203    "Both I/O   ",
204    "InputOnly  ",
205    "OutputOnly ",
206    "Preserve   "
207};
208
209const char                  *PolarityDecode[] =
210{
211    "ActiveHigh",
212    "ActiveLow ",
213    "ActiveBoth",
214    "Reserved  "
215};
216
217
218/*******************************************************************************
219 *
220 * FUNCTION:    MpEmitMappingInfo
221 *
222 * PARAMETERS:  None
223 *
224 * RETURN:      None
225 *
226 * DESCRIPTION: External interface.
227 *              Map file has already been opened. Emit all of the collected
228 *              hardware mapping information. Includes: GPIO information,
229 *              Serial information, and a dump of the entire ACPI device tree.
230 *
231 ******************************************************************************/
232
233void
234MpEmitMappingInfo (
235    void)
236{
237
238    /* Mapfile option enabled? */
239
240    if (!AslGbl_MapfileFlag)
241    {
242        return;
243    }
244
245    if (!AslGbl_GpioList)
246    {
247        FlPrintFile (ASL_FILE_MAP_OUTPUT,
248            "\nNo GPIO devices found\n");
249    }
250
251    if (!AslGbl_SerialList)
252    {
253        FlPrintFile (ASL_FILE_MAP_OUTPUT,
254            "\nNo Serial devices found (I2C/SPI/UART)\n");
255    }
256
257    if (!AslGbl_GpioList && !AslGbl_SerialList)
258    {
259        return;
260    }
261
262    /* Headers */
263
264    FlPrintFile (ASL_FILE_MAP_OUTPUT, "\nResource Descriptor Connectivity Map\n");
265    FlPrintFile (ASL_FILE_MAP_OUTPUT,   "------------------------------------\n");
266
267    /* Emit GPIO and Serial descriptors, then entire ACPI device tree */
268
269    MpEmitGpioInfo ();
270    MpEmitSerialInfo ();
271    MpEmitDeviceTree ();
272
273    /* Clear the lists - no need to free memory here */
274
275    AslGbl_SerialList = NULL;
276    AslGbl_GpioList = NULL;
277}
278
279
280/*******************************************************************************
281 *
282 * FUNCTION:    MpEmitGpioInfo
283 *
284 * PARAMETERS:  None
285 *
286 * RETURN:      None
287 *
288 * DESCRIPTION: Emit the info about all GPIO devices found during the
289 *              compile or disassembly.
290 *
291 ******************************************************************************/
292
293static void
294MpEmitGpioInfo (
295    void)
296{
297    ACPI_GPIO_INFO          *Info;
298    char                    *Type;
299    char                    *PrevDeviceName = NULL;
300    const char              *Direction;
301    const char              *Polarity;
302    char                    *ParentPathname;
303    const char              *Description;
304    char                    *HidString;
305    const AH_DEVICE_ID      *HidInfo;
306
307
308    /* Walk the GPIO descriptor list */
309
310    Info = AslGbl_GpioList;
311    while (Info)
312    {
313        HidString = MpGetHidViaNamestring (Info->DeviceName);
314
315        /* Print header info for the controller itself */
316
317        if (!PrevDeviceName ||
318            strcmp (PrevDeviceName, Info->DeviceName))
319        {
320            FlPrintFile (ASL_FILE_MAP_OUTPUT,
321                "\n\nGPIO Controller:  %-8s  %-28s",
322                HidString, Info->DeviceName);
323
324            HidInfo = AcpiAhMatchHardwareId (HidString);
325            if (HidInfo)
326            {
327                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // %s",
328                    HidInfo->Description);
329            }
330
331            FlPrintFile (ASL_FILE_MAP_OUTPUT,
332                "\n\nPin   Type     Direction    Polarity"
333                "    Dest _HID  Destination\n");
334        }
335
336        PrevDeviceName = Info->DeviceName;
337
338        /* Setup various strings based upon the type (GpioInt or GpioIo) */
339
340        switch (Info->Type)
341        {
342        case AML_RESOURCE_GPIO_TYPE_INT:
343
344            Type = "GpioInt";
345            Direction = "-Interrupt-";
346            Polarity = PolarityDecode[Info->Polarity];
347            break;
348
349        case AML_RESOURCE_GPIO_TYPE_IO:
350
351            Type = "GpioIo ";
352            Direction = DirectionDecode[Info->Direction];
353            Polarity = "          ";
354            break;
355
356        default:
357            continue;
358        }
359
360        /* Emit the GPIO info */
361
362        FlPrintFile (ASL_FILE_MAP_OUTPUT, "%4.4X  %s  %s  %s  ",
363            Info->PinNumber, Type, Direction, Polarity);
364
365        ParentPathname = NULL;
366        HidString = MpGetConnectionInfo (Info->Op, Info->PinIndex,
367            &Info->TargetNode, &ParentPathname);
368        if (HidString)
369        {
370            /*
371             * This is a Connection() field
372             * Attempt to find all references to the field.
373             */
374            FlPrintFile (ASL_FILE_MAP_OUTPUT, "%8s   %-28s",
375                HidString, ParentPathname);
376
377            MpXrefDevices (Info);
378        }
379        else
380        {
381            /*
382             * For Devices, attempt to get the _HID description string.
383             * Failing that (many _HIDs are not recognized), attempt to
384             * get the _DDN description string.
385             */
386            HidString = MpGetParentDeviceHid (Info->Op, &Info->TargetNode,
387                &ParentPathname);
388
389            FlPrintFile (ASL_FILE_MAP_OUTPUT, "%8s   %-28s",
390                HidString, ParentPathname);
391
392            /* Get the _HID description or _DDN string */
393
394            HidInfo = AcpiAhMatchHardwareId (HidString);
395            if (HidInfo)
396            {
397                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // %s",
398                    HidInfo->Description);
399            }
400            else if ((Description = MpGetDdnValue (ParentPathname)))
401            {
402                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // %s (_DDN)",
403                    Description);
404            }
405        }
406
407        FlPrintFile (ASL_FILE_MAP_OUTPUT, "\n");
408        ACPI_FREE (ParentPathname);
409        Info = Info->Next;
410    }
411}
412
413
414/*******************************************************************************
415 *
416 * FUNCTION:    MpEmitSerialInfo
417 *
418 * PARAMETERS:  None
419 *
420 * RETURN:      None
421 *
422 * DESCRIPTION: Emit the info about all Serial devices found during the
423 *              compile or disassembly.
424 *
425 ******************************************************************************/
426
427static void
428MpEmitSerialInfo (
429    void)
430{
431    ACPI_SERIAL_INFO        *Info;
432    char                    *Type;
433    char                    *ParentPathname;
434    char                    *PrevDeviceName = NULL;
435    char                    *HidString;
436    const AH_DEVICE_ID      *HidInfo;
437    const char              *Description;
438    AML_RESOURCE            *Resource;
439
440
441    /* Walk the constructed serial descriptor list */
442
443    Info = AslGbl_SerialList;
444    while (Info)
445    {
446        Resource = Info->Resource;
447        switch (Resource->CommonSerialBus.Type)
448        {
449        case AML_RESOURCE_I2C_SERIALBUSTYPE:
450            Type = "I2C ";
451            break;
452
453        case AML_RESOURCE_SPI_SERIALBUSTYPE:
454            Type = "SPI ";
455            break;
456
457        case AML_RESOURCE_UART_SERIALBUSTYPE:
458            Type = "UART";
459            break;
460
461        default:
462            Type = "UNKN";
463            break;
464        }
465
466        HidString = MpGetHidViaNamestring (Info->DeviceName);
467
468        /* Print header info for the controller itself */
469
470        if (!PrevDeviceName ||
471            strcmp (PrevDeviceName, Info->DeviceName))
472        {
473            FlPrintFile (ASL_FILE_MAP_OUTPUT, "\n\n%s Controller:  ",
474                Type);
475            FlPrintFile (ASL_FILE_MAP_OUTPUT, "%-8s  %-28s",
476                HidString, Info->DeviceName);
477
478            HidInfo = AcpiAhMatchHardwareId (HidString);
479            if (HidInfo)
480            {
481                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // %s",
482                    HidInfo->Description);
483            }
484
485            FlPrintFile (ASL_FILE_MAP_OUTPUT, "\n\n");
486            FlPrintFile (ASL_FILE_MAP_OUTPUT,
487                "Type  Address   Speed      Dest _HID  Destination\n");
488        }
489
490        PrevDeviceName = Info->DeviceName;
491
492        FlPrintFile (ASL_FILE_MAP_OUTPUT, "%s   %4.4X    %8.8X    ",
493            Type, Info->Address, Info->Speed);
494
495        ParentPathname = NULL;
496        HidString = MpGetConnectionInfo (Info->Op, 0, &Info->TargetNode,
497            &ParentPathname);
498        if (HidString)
499        {
500            /*
501             * This is a Connection() field
502             * Attempt to find all references to the field.
503             */
504            FlPrintFile (ASL_FILE_MAP_OUTPUT, "%8s   %-28s",
505                HidString, ParentPathname);
506        }
507        else
508        {
509            /* Normal resource template */
510
511            HidString = MpGetParentDeviceHid (Info->Op, &Info->TargetNode,
512                &ParentPathname);
513            FlPrintFile (ASL_FILE_MAP_OUTPUT, "%8s   %-28s",
514                HidString, ParentPathname);
515
516            /* Get the _HID description or _DDN string */
517
518            HidInfo = AcpiAhMatchHardwareId (HidString);
519            if (HidInfo)
520            {
521                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // %s",
522                    HidInfo->Description);
523            }
524            else if ((Description = MpGetDdnValue (ParentPathname)))
525            {
526                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // %s (_DDN)",
527                    Description);
528            }
529        }
530
531        FlPrintFile (ASL_FILE_MAP_OUTPUT, "\n");
532        ACPI_FREE (ParentPathname);
533        Info = Info->Next;
534    }
535}
536
537
538/*******************************************************************************
539 *
540 * FUNCTION:    MpEmitDeviceTree
541 *
542 * PARAMETERS:  None
543 *
544 * RETURN:      None
545 *
546 * DESCRIPTION: Emit information about all devices within the ACPI namespace.
547 *
548 ******************************************************************************/
549
550static void
551MpEmitDeviceTree (
552    void)
553{
554
555    FlPrintFile (ASL_FILE_MAP_OUTPUT, "\n\nACPI Device Tree\n");
556    FlPrintFile (ASL_FILE_MAP_OUTPUT,     "----------------\n\n");
557
558    FlPrintFile (ASL_FILE_MAP_OUTPUT, "Device Pathname                   "
559        "_HID      Description\n\n");
560
561    /* Walk the namespace from the root */
562
563    (void) AcpiNsWalkNamespace (ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
564        ACPI_UINT32_MAX, FALSE, MpEmitOneDevice, NULL, NULL, NULL);
565}
566
567
568/*******************************************************************************
569 *
570 * FUNCTION:    MpEmitOneDevice
571 *
572 * PARAMETERS:  ACPI_NAMESPACE_WALK callback
573 *
574 * RETURN:      Status
575 *
576 * DESCRIPTION: Emit information about one ACPI device in the namespace. Used
577 *              during dump of all device objects within the namespace.
578 *
579 ******************************************************************************/
580
581static ACPI_STATUS
582MpEmitOneDevice (
583    ACPI_HANDLE             ObjHandle,
584    UINT32                  NestingLevel,
585    void                    *Context,
586    void                    **ReturnValue)
587{
588    char                    *DevicePathname;
589    char                    *DdnString;
590    char                    *HidString;
591    const AH_DEVICE_ID      *HidInfo;
592
593
594    /* Device pathname */
595
596    DevicePathname = AcpiNsGetExternalPathname (
597        ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle));
598
599    FlPrintFile (ASL_FILE_MAP_OUTPUT, "%-32s", DevicePathname);
600
601    /* _HID or _DDN */
602
603    HidString = MpGetHidValue (
604        ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle));
605    FlPrintFile (ASL_FILE_MAP_OUTPUT, "%8s", HidString);
606
607    HidInfo = AcpiAhMatchHardwareId (HidString);
608    if (HidInfo)
609    {
610        FlPrintFile (ASL_FILE_MAP_OUTPUT, "    // %s",
611            HidInfo->Description);
612    }
613    else if ((DdnString = MpGetDdnValue (DevicePathname)))
614    {
615        FlPrintFile (ASL_FILE_MAP_OUTPUT, "    // %s (_DDN)", DdnString);
616    }
617
618    FlPrintFile (ASL_FILE_MAP_OUTPUT, "\n");
619    ACPI_FREE (DevicePathname);
620    return (AE_OK);
621}
622
623
624/*******************************************************************************
625 *
626 * FUNCTION:    MpXrefDevices
627 *
628 * PARAMETERS:  Info                    - A GPIO Info block
629 *
630 * RETURN:      None
631 *
632 * DESCRIPTION: Cross-reference the parse tree and find all references to the
633 *              specified GPIO device.
634 *
635 ******************************************************************************/
636
637static void
638MpXrefDevices (
639    ACPI_GPIO_INFO          *Info)
640{
641
642    /* Walk the entire parse tree */
643
644    TrWalkParseTree (AslGbl_ParseTreeRoot, ASL_WALK_VISIT_DOWNWARD,
645        MpNamespaceXrefBegin, NULL, Info);
646
647    if (!Info->References)
648    {
649        FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // **** No references in table");
650    }
651}
652
653
654/*******************************************************************************
655 *
656 * FUNCTION:    MpNamespaceXrefBegin
657 *
658 * PARAMETERS:  WALK_PARSE_TREE callback
659 *
660 * RETURN:      Status
661 *
662 * DESCRIPTION: Walk parse tree callback used to cross-reference GPIO pins.
663 *
664 ******************************************************************************/
665
666static ACPI_STATUS
667MpNamespaceXrefBegin (
668    ACPI_PARSE_OBJECT       *Op,
669    UINT32                  Level,
670    void                    *Context)
671{
672    ACPI_GPIO_INFO          *Info = ACPI_CAST_PTR (ACPI_GPIO_INFO, Context);
673    const ACPI_OPCODE_INFO  *OpInfo;
674    char                    *DevicePathname;
675    ACPI_PARSE_OBJECT       *ParentOp;
676    char                    *HidString;
677
678
679    ACPI_FUNCTION_TRACE_PTR (MpNamespaceXrefBegin, Op);
680
681    /*
682     * If this node is the actual declaration of a name
683     * [such as the XXXX name in "Method (XXXX)"],
684     * we are not interested in it here. We only care about names that
685     * are references to other objects within the namespace and the
686     * parent objects of name declarations
687     */
688    if (Op->Asl.CompileFlags & OP_IS_NAME_DECLARATION)
689    {
690        return (AE_OK);
691    }
692
693    /* We are only interested in opcodes that have an associated name */
694
695    OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);
696
697    if ((OpInfo->Flags & AML_NAMED) ||
698        (OpInfo->Flags & AML_CREATE))
699    {
700        return (AE_OK);
701    }
702
703    if ((Op->Asl.ParseOpcode != PARSEOP_NAMESTRING) &&
704        (Op->Asl.ParseOpcode != PARSEOP_NAMESEG)    &&
705        (Op->Asl.ParseOpcode != PARSEOP_METHODCALL))
706    {
707        return (AE_OK);
708    }
709
710    if (!Op->Asl.Node)
711    {
712        return (AE_OK);
713    }
714
715    ParentOp = Op->Asl.Parent;
716    if (ParentOp->Asl.ParseOpcode == PARSEOP_FIELD)
717    {
718        return (AE_OK);
719    }
720
721    if (Op->Asl.Node == Info->TargetNode)
722    {
723        while (ParentOp && (!ParentOp->Asl.Node))
724        {
725            ParentOp = ParentOp->Asl.Parent;
726        }
727
728        if (ParentOp)
729        {
730            DevicePathname = AcpiNsGetExternalPathname (
731                ParentOp->Asl.Node);
732
733            if (!Info->References)
734            {
735                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // References:");
736            }
737
738            HidString = MpGetHidViaNamestring (DevicePathname);
739
740            FlPrintFile (ASL_FILE_MAP_OUTPUT, " %s [%s]",
741                DevicePathname, HidString);
742
743            Info->References++;
744
745            ACPI_FREE (DevicePathname);
746        }
747    }
748
749    return (AE_OK);
750}
751