1/******************************************************************************
2 *
3 * Module Name: osunixxf - UNIX OSL interfaces
4 *
5 *****************************************************************************/
6
7/******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2017, 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/*
153 * These interfaces are required in order to compile the ASL compiler and the
154 * various ACPICA tools under Linux or other Unix-like system.
155 */
156#include <contrib/dev/acpica/include/acpi.h>
157#include <contrib/dev/acpica/include/accommon.h>
158#include <contrib/dev/acpica/include/amlcode.h>
159#include <contrib/dev/acpica/include/acparser.h>
160#include <contrib/dev/acpica/include/acdebug.h>
161
162#include <stdio.h>
163#include <stdlib.h>
164#include <stdarg.h>
165#include <unistd.h>
166#include <sys/time.h>
167#include <semaphore.h>
168#include <pthread.h>
169#include <errno.h>
170
171#define _COMPONENT          ACPI_OS_SERVICES
172        ACPI_MODULE_NAME    ("osunixxf")
173
174
175/* Upcalls to AcpiExec */
176
177void
178AeTableOverride (
179    ACPI_TABLE_HEADER       *ExistingTable,
180    ACPI_TABLE_HEADER       **NewTable);
181
182typedef void* (*PTHREAD_CALLBACK) (void *);
183
184/* Buffer used by AcpiOsVprintf */
185
186#define ACPI_VPRINTF_BUFFER_SIZE    512
187#define _ASCII_NEWLINE              '\n'
188
189/* Terminal support for AcpiExec only */
190
191#ifdef ACPI_EXEC_APP
192#include <termios.h>
193
194struct termios              OriginalTermAttributes;
195int                         TermAttributesWereSet = 0;
196
197ACPI_STATUS
198AcpiUtReadLine (
199    char                    *Buffer,
200    UINT32                  BufferLength,
201    UINT32                  *BytesRead);
202
203static void
204OsEnterLineEditMode (
205    void);
206
207static void
208OsExitLineEditMode (
209    void);
210
211
212/******************************************************************************
213 *
214 * FUNCTION:    OsEnterLineEditMode, OsExitLineEditMode
215 *
216 * PARAMETERS:  None
217 *
218 * RETURN:      None
219 *
220 * DESCRIPTION: Enter/Exit the raw character input mode for the terminal.
221 *
222 * Interactive line-editing support for the AML debugger. Used with the
223 * common/acgetline module.
224 *
225 * readline() is not used because of non-portability. It is not available
226 * on all systems, and if it is, often the package must be manually installed.
227 *
228 * Therefore, we use the POSIX tcgetattr/tcsetattr and do the minimal line
229 * editing that we need in AcpiOsGetLine.
230 *
231 * If the POSIX tcgetattr/tcsetattr interfaces are unavailable, these
232 * calls will also work:
233 *     For OsEnterLineEditMode: system ("stty cbreak -echo")
234 *     For OsExitLineEditMode:  system ("stty cooked echo")
235 *
236 *****************************************************************************/
237
238static void
239OsEnterLineEditMode (
240    void)
241{
242    struct termios          LocalTermAttributes;
243
244
245    TermAttributesWereSet = 0;
246
247    /* STDIN must be a terminal */
248
249    if (!isatty (STDIN_FILENO))
250    {
251        return;
252    }
253
254    /* Get and keep the original attributes */
255
256    if (tcgetattr (STDIN_FILENO, &OriginalTermAttributes))
257    {
258        fprintf (stderr, "Could not get terminal attributes!\n");
259        return;
260    }
261
262    /* Set the new attributes to enable raw character input */
263
264    memcpy (&LocalTermAttributes, &OriginalTermAttributes,
265        sizeof (struct termios));
266
267    LocalTermAttributes.c_lflag &= ~(ICANON | ECHO);
268    LocalTermAttributes.c_cc[VMIN] = 1;
269    LocalTermAttributes.c_cc[VTIME] = 0;
270
271    if (tcsetattr (STDIN_FILENO, TCSANOW, &LocalTermAttributes))
272    {
273        fprintf (stderr, "Could not set terminal attributes!\n");
274        return;
275    }
276
277    TermAttributesWereSet = 1;
278}
279
280
281static void
282OsExitLineEditMode (
283    void)
284{
285
286    if (!TermAttributesWereSet)
287    {
288        return;
289    }
290
291    /* Set terminal attributes back to the original values */
292
293    if (tcsetattr (STDIN_FILENO, TCSANOW, &OriginalTermAttributes))
294    {
295        fprintf (stderr, "Could not restore terminal attributes!\n");
296    }
297}
298
299
300#else
301
302/* These functions are not needed for other ACPICA utilities */
303
304#define OsEnterLineEditMode()
305#define OsExitLineEditMode()
306#endif
307
308
309/******************************************************************************
310 *
311 * FUNCTION:    AcpiOsInitialize, AcpiOsTerminate
312 *
313 * PARAMETERS:  None
314 *
315 * RETURN:      Status
316 *
317 * DESCRIPTION: Initialize and terminate this module.
318 *
319 *****************************************************************************/
320
321ACPI_STATUS
322AcpiOsInitialize (
323    void)
324{
325    ACPI_STATUS            Status;
326
327
328    AcpiGbl_OutputFile = stdout;
329
330    OsEnterLineEditMode ();
331
332    Status = AcpiOsCreateLock (&AcpiGbl_PrintLock);
333    if (ACPI_FAILURE (Status))
334    {
335        return (Status);
336    }
337
338    return (AE_OK);
339}
340
341ACPI_STATUS
342AcpiOsTerminate (
343    void)
344{
345
346    OsExitLineEditMode ();
347    return (AE_OK);
348}
349
350
351#ifndef ACPI_USE_NATIVE_RSDP_POINTER
352/******************************************************************************
353 *
354 * FUNCTION:    AcpiOsGetRootPointer
355 *
356 * PARAMETERS:  None
357 *
358 * RETURN:      RSDP physical address
359 *
360 * DESCRIPTION: Gets the ACPI root pointer (RSDP)
361 *
362 *****************************************************************************/
363
364ACPI_PHYSICAL_ADDRESS
365AcpiOsGetRootPointer (
366    void)
367{
368
369    return (0);
370}
371#endif
372
373
374/******************************************************************************
375 *
376 * FUNCTION:    AcpiOsPredefinedOverride
377 *
378 * PARAMETERS:  InitVal             - Initial value of the predefined object
379 *              NewVal              - The new value for the object
380 *
381 * RETURN:      Status, pointer to value. Null pointer returned if not
382 *              overriding.
383 *
384 * DESCRIPTION: Allow the OS to override predefined names
385 *
386 *****************************************************************************/
387
388ACPI_STATUS
389AcpiOsPredefinedOverride (
390    const ACPI_PREDEFINED_NAMES *InitVal,
391    ACPI_STRING                 *NewVal)
392{
393
394    if (!InitVal || !NewVal)
395    {
396        return (AE_BAD_PARAMETER);
397    }
398
399    *NewVal = NULL;
400    return (AE_OK);
401}
402
403
404/******************************************************************************
405 *
406 * FUNCTION:    AcpiOsTableOverride
407 *
408 * PARAMETERS:  ExistingTable       - Header of current table (probably
409 *                                    firmware)
410 *              NewTable            - Where an entire new table is returned.
411 *
412 * RETURN:      Status, pointer to new table. Null pointer returned if no
413 *              table is available to override
414 *
415 * DESCRIPTION: Return a different version of a table if one is available
416 *
417 *****************************************************************************/
418
419ACPI_STATUS
420AcpiOsTableOverride (
421    ACPI_TABLE_HEADER       *ExistingTable,
422    ACPI_TABLE_HEADER       **NewTable)
423{
424
425    if (!ExistingTable || !NewTable)
426    {
427        return (AE_BAD_PARAMETER);
428    }
429
430    *NewTable = NULL;
431
432#ifdef ACPI_EXEC_APP
433
434    AeTableOverride (ExistingTable, NewTable);
435    return (AE_OK);
436#else
437
438    return (AE_NO_ACPI_TABLES);
439#endif
440}
441
442
443/******************************************************************************
444 *
445 * FUNCTION:    AcpiOsPhysicalTableOverride
446 *
447 * PARAMETERS:  ExistingTable       - Header of current table (probably firmware)
448 *              NewAddress          - Where new table address is returned
449 *                                    (Physical address)
450 *              NewTableLength      - Where new table length is returned
451 *
452 * RETURN:      Status, address/length of new table. Null pointer returned
453 *              if no table is available to override.
454 *
455 * DESCRIPTION: Returns AE_SUPPORT, function not used in user space.
456 *
457 *****************************************************************************/
458
459ACPI_STATUS
460AcpiOsPhysicalTableOverride (
461    ACPI_TABLE_HEADER       *ExistingTable,
462    ACPI_PHYSICAL_ADDRESS   *NewAddress,
463    UINT32                  *NewTableLength)
464{
465
466    return (AE_SUPPORT);
467}
468
469
470/******************************************************************************
471 *
472 * FUNCTION:    AcpiOsEnterSleep
473 *
474 * PARAMETERS:  SleepState          - Which sleep state to enter
475 *              RegaValue           - Register A value
476 *              RegbValue           - Register B value
477 *
478 * RETURN:      Status
479 *
480 * DESCRIPTION: A hook before writing sleep registers to enter the sleep
481 *              state. Return AE_CTRL_TERMINATE to skip further sleep register
482 *              writes.
483 *
484 *****************************************************************************/
485
486ACPI_STATUS
487AcpiOsEnterSleep (
488    UINT8                   SleepState,
489    UINT32                  RegaValue,
490    UINT32                  RegbValue)
491{
492
493    return (AE_OK);
494}
495
496
497/******************************************************************************
498 *
499 * FUNCTION:    AcpiOsRedirectOutput
500 *
501 * PARAMETERS:  Destination         - An open file handle/pointer
502 *
503 * RETURN:      None
504 *
505 * DESCRIPTION: Causes redirect of AcpiOsPrintf and AcpiOsVprintf
506 *
507 *****************************************************************************/
508
509void
510AcpiOsRedirectOutput (
511    void                    *Destination)
512{
513
514    AcpiGbl_OutputFile = Destination;
515}
516
517
518/******************************************************************************
519 *
520 * FUNCTION:    AcpiOsPrintf
521 *
522 * PARAMETERS:  fmt, ...            - Standard printf format
523 *
524 * RETURN:      None
525 *
526 * DESCRIPTION: Formatted output. Note: very similar to AcpiOsVprintf
527 *              (performance), changes should be tracked in both functions.
528 *
529 *****************************************************************************/
530
531void ACPI_INTERNAL_VAR_XFACE
532AcpiOsPrintf (
533    const char              *Fmt,
534    ...)
535{
536    va_list                 Args;
537    UINT8                   Flags;
538
539
540    Flags = AcpiGbl_DbOutputFlags;
541    if (Flags & ACPI_DB_REDIRECTABLE_OUTPUT)
542    {
543        /* Output is directable to either a file (if open) or the console */
544
545        if (AcpiGbl_DebugFile)
546        {
547            /* Output file is open, send the output there */
548
549            va_start (Args, Fmt);
550            vfprintf (AcpiGbl_DebugFile, Fmt, Args);
551            va_end (Args);
552        }
553        else
554        {
555            /* No redirection, send output to console (once only!) */
556
557            Flags |= ACPI_DB_CONSOLE_OUTPUT;
558        }
559    }
560
561    if (Flags & ACPI_DB_CONSOLE_OUTPUT)
562    {
563        va_start (Args, Fmt);
564        vfprintf (AcpiGbl_OutputFile, Fmt, Args);
565        va_end (Args);
566    }
567}
568
569
570/******************************************************************************
571 *
572 * FUNCTION:    AcpiOsVprintf
573 *
574 * PARAMETERS:  fmt                 - Standard printf format
575 *              args                - Argument list
576 *
577 * RETURN:      None
578 *
579 * DESCRIPTION: Formatted output with argument list pointer. Note: very
580 *              similar to AcpiOsPrintf, changes should be tracked in both
581 *              functions.
582 *
583 *****************************************************************************/
584
585void
586AcpiOsVprintf (
587    const char              *Fmt,
588    va_list                 Args)
589{
590    UINT8                   Flags;
591    char                    Buffer[ACPI_VPRINTF_BUFFER_SIZE];
592
593
594    /*
595     * We build the output string in a local buffer because we may be
596     * outputting the buffer twice. Using vfprintf is problematic because
597     * some implementations modify the args pointer/structure during
598     * execution. Thus, we use the local buffer for portability.
599     *
600     * Note: Since this module is intended for use by the various ACPICA
601     * utilities/applications, we can safely declare the buffer on the stack.
602     * Also, This function is used for relatively small error messages only.
603     */
604    vsnprintf (Buffer, ACPI_VPRINTF_BUFFER_SIZE, Fmt, Args);
605
606    Flags = AcpiGbl_DbOutputFlags;
607    if (Flags & ACPI_DB_REDIRECTABLE_OUTPUT)
608    {
609        /* Output is directable to either a file (if open) or the console */
610
611        if (AcpiGbl_DebugFile)
612        {
613            /* Output file is open, send the output there */
614
615            fputs (Buffer, AcpiGbl_DebugFile);
616        }
617        else
618        {
619            /* No redirection, send output to console (once only!) */
620
621            Flags |= ACPI_DB_CONSOLE_OUTPUT;
622        }
623    }
624
625    if (Flags & ACPI_DB_CONSOLE_OUTPUT)
626    {
627        fputs (Buffer, AcpiGbl_OutputFile);
628    }
629}
630
631
632#ifndef ACPI_EXEC_APP
633/******************************************************************************
634 *
635 * FUNCTION:    AcpiOsGetLine
636 *
637 * PARAMETERS:  Buffer              - Where to return the command line
638 *              BufferLength        - Maximum length of Buffer
639 *              BytesRead           - Where the actual byte count is returned
640 *
641 * RETURN:      Status and actual bytes read
642 *
643 * DESCRIPTION: Get the next input line from the terminal. NOTE: For the
644 *              AcpiExec utility, we use the acgetline module instead to
645 *              provide line-editing and history support.
646 *
647 *****************************************************************************/
648
649ACPI_STATUS
650AcpiOsGetLine (
651    char                    *Buffer,
652    UINT32                  BufferLength,
653    UINT32                  *BytesRead)
654{
655    int                     InputChar;
656    UINT32                  EndOfLine;
657
658
659    /* Standard AcpiOsGetLine for all utilities except AcpiExec */
660
661    for (EndOfLine = 0; ; EndOfLine++)
662    {
663        if (EndOfLine >= BufferLength)
664        {
665            return (AE_BUFFER_OVERFLOW);
666        }
667
668        if ((InputChar = getchar ()) == EOF)
669        {
670            return (AE_ERROR);
671        }
672
673        if (!InputChar || InputChar == _ASCII_NEWLINE)
674        {
675            break;
676        }
677
678        Buffer[EndOfLine] = (char) InputChar;
679    }
680
681    /* Null terminate the buffer */
682
683    Buffer[EndOfLine] = 0;
684
685    /* Return the number of bytes in the string */
686
687    if (BytesRead)
688    {
689        *BytesRead = EndOfLine;
690    }
691
692    return (AE_OK);
693}
694#endif
695
696
697#ifndef ACPI_USE_NATIVE_MEMORY_MAPPING
698/******************************************************************************
699 *
700 * FUNCTION:    AcpiOsMapMemory
701 *
702 * PARAMETERS:  where               - Physical address of memory to be mapped
703 *              length              - How much memory to map
704 *
705 * RETURN:      Pointer to mapped memory. Null on error.
706 *
707 * DESCRIPTION: Map physical memory into caller's address space
708 *
709 *****************************************************************************/
710
711void *
712AcpiOsMapMemory (
713    ACPI_PHYSICAL_ADDRESS   where,
714    ACPI_SIZE               length)
715{
716
717    return (ACPI_TO_POINTER ((ACPI_SIZE) where));
718}
719
720
721/******************************************************************************
722 *
723 * FUNCTION:    AcpiOsUnmapMemory
724 *
725 * PARAMETERS:  where               - Logical address of memory to be unmapped
726 *              length              - How much memory to unmap
727 *
728 * RETURN:      None.
729 *
730 * DESCRIPTION: Delete a previously created mapping. Where and Length must
731 *              correspond to a previous mapping exactly.
732 *
733 *****************************************************************************/
734
735void
736AcpiOsUnmapMemory (
737    void                    *where,
738    ACPI_SIZE               length)
739{
740
741    return;
742}
743#endif
744
745
746/******************************************************************************
747 *
748 * FUNCTION:    AcpiOsAllocate
749 *
750 * PARAMETERS:  Size                - Amount to allocate, in bytes
751 *
752 * RETURN:      Pointer to the new allocation. Null on error.
753 *
754 * DESCRIPTION: Allocate memory. Algorithm is dependent on the OS.
755 *
756 *****************************************************************************/
757
758void *
759AcpiOsAllocate (
760    ACPI_SIZE               size)
761{
762    void                    *Mem;
763
764
765    Mem = (void *) malloc ((size_t) size);
766    return (Mem);
767}
768
769
770#ifdef USE_NATIVE_ALLOCATE_ZEROED
771/******************************************************************************
772 *
773 * FUNCTION:    AcpiOsAllocateZeroed
774 *
775 * PARAMETERS:  Size                - Amount to allocate, in bytes
776 *
777 * RETURN:      Pointer to the new allocation. Null on error.
778 *
779 * DESCRIPTION: Allocate and zero memory. Algorithm is dependent on the OS.
780 *
781 *****************************************************************************/
782
783void *
784AcpiOsAllocateZeroed (
785    ACPI_SIZE               size)
786{
787    void                    *Mem;
788
789
790    Mem = (void *) calloc (1, (size_t) size);
791    return (Mem);
792}
793#endif
794
795
796/******************************************************************************
797 *
798 * FUNCTION:    AcpiOsFree
799 *
800 * PARAMETERS:  mem                 - Pointer to previously allocated memory
801 *
802 * RETURN:      None.
803 *
804 * DESCRIPTION: Free memory allocated via AcpiOsAllocate
805 *
806 *****************************************************************************/
807
808void
809AcpiOsFree (
810    void                    *mem)
811{
812
813    free (mem);
814}
815
816
817#ifdef ACPI_SINGLE_THREADED
818/******************************************************************************
819 *
820 * FUNCTION:    Semaphore stub functions
821 *
822 * DESCRIPTION: Stub functions used for single-thread applications that do
823 *              not require semaphore synchronization. Full implementations
824 *              of these functions appear after the stubs.
825 *
826 *****************************************************************************/
827
828ACPI_STATUS
829AcpiOsCreateSemaphore (
830    UINT32              MaxUnits,
831    UINT32              InitialUnits,
832    ACPI_HANDLE         *OutHandle)
833{
834    *OutHandle = (ACPI_HANDLE) 1;
835    return (AE_OK);
836}
837
838ACPI_STATUS
839AcpiOsDeleteSemaphore (
840    ACPI_HANDLE         Handle)
841{
842    return (AE_OK);
843}
844
845ACPI_STATUS
846AcpiOsWaitSemaphore (
847    ACPI_HANDLE         Handle,
848    UINT32              Units,
849    UINT16              Timeout)
850{
851    return (AE_OK);
852}
853
854ACPI_STATUS
855AcpiOsSignalSemaphore (
856    ACPI_HANDLE         Handle,
857    UINT32              Units)
858{
859    return (AE_OK);
860}
861
862#else
863/******************************************************************************
864 *
865 * FUNCTION:    AcpiOsCreateSemaphore
866 *
867 * PARAMETERS:  InitialUnits        - Units to be assigned to the new semaphore
868 *              OutHandle           - Where a handle will be returned
869 *
870 * RETURN:      Status
871 *
872 * DESCRIPTION: Create an OS semaphore
873 *
874 *****************************************************************************/
875
876ACPI_STATUS
877AcpiOsCreateSemaphore (
878    UINT32              MaxUnits,
879    UINT32              InitialUnits,
880    ACPI_HANDLE         *OutHandle)
881{
882    sem_t               *Sem;
883
884
885    if (!OutHandle)
886    {
887        return (AE_BAD_PARAMETER);
888    }
889
890#ifdef __APPLE__
891    {
892        static int      SemaphoreCount = 0;
893        char            SemaphoreName[32];
894
895        snprintf (SemaphoreName, sizeof (SemaphoreName), "acpi_sem_%d",
896            SemaphoreCount++);
897        printf ("%s\n", SemaphoreName);
898        Sem = sem_open (SemaphoreName, O_EXCL|O_CREAT, 0755, InitialUnits);
899        if (!Sem)
900        {
901            return (AE_NO_MEMORY);
902        }
903        sem_unlink (SemaphoreName); /* This just deletes the name */
904    }
905
906#else
907    Sem = AcpiOsAllocate (sizeof (sem_t));
908    if (!Sem)
909    {
910        return (AE_NO_MEMORY);
911    }
912
913    if (sem_init (Sem, 0, InitialUnits) == -1)
914    {
915        AcpiOsFree (Sem);
916        return (AE_BAD_PARAMETER);
917    }
918#endif
919
920    *OutHandle = (ACPI_HANDLE) Sem;
921    return (AE_OK);
922}
923
924
925/******************************************************************************
926 *
927 * FUNCTION:    AcpiOsDeleteSemaphore
928 *
929 * PARAMETERS:  Handle              - Handle returned by AcpiOsCreateSemaphore
930 *
931 * RETURN:      Status
932 *
933 * DESCRIPTION: Delete an OS semaphore
934 *
935 *****************************************************************************/
936
937ACPI_STATUS
938AcpiOsDeleteSemaphore (
939    ACPI_HANDLE         Handle)
940{
941    sem_t               *Sem = (sem_t *) Handle;
942
943
944    if (!Sem)
945    {
946        return (AE_BAD_PARAMETER);
947    }
948
949#ifdef __APPLE__
950    if (sem_close (Sem) == -1)
951    {
952        return (AE_BAD_PARAMETER);
953    }
954#else
955    if (sem_destroy (Sem) == -1)
956    {
957        return (AE_BAD_PARAMETER);
958    }
959#endif
960
961    return (AE_OK);
962}
963
964
965/******************************************************************************
966 *
967 * FUNCTION:    AcpiOsWaitSemaphore
968 *
969 * PARAMETERS:  Handle              - Handle returned by AcpiOsCreateSemaphore
970 *              Units               - How many units to wait for
971 *              MsecTimeout         - How long to wait (milliseconds)
972 *
973 * RETURN:      Status
974 *
975 * DESCRIPTION: Wait for units
976 *
977 *****************************************************************************/
978
979ACPI_STATUS
980AcpiOsWaitSemaphore (
981    ACPI_HANDLE         Handle,
982    UINT32              Units,
983    UINT16              MsecTimeout)
984{
985    ACPI_STATUS         Status = AE_OK;
986    sem_t               *Sem = (sem_t *) Handle;
987    int                 RetVal;
988#ifndef ACPI_USE_ALTERNATE_TIMEOUT
989    struct timespec     Time;
990#endif
991
992
993    if (!Sem)
994    {
995        return (AE_BAD_PARAMETER);
996    }
997
998    switch (MsecTimeout)
999    {
1000    /*
1001     * No Wait:
1002     * --------
1003     * A zero timeout value indicates that we shouldn't wait - just
1004     * acquire the semaphore if available otherwise return AE_TIME
1005     * (a.k.a. 'would block').
1006     */
1007    case 0:
1008
1009        if (sem_trywait(Sem) == -1)
1010        {
1011            Status = (AE_TIME);
1012        }
1013        break;
1014
1015    /* Wait Indefinitely */
1016
1017    case ACPI_WAIT_FOREVER:
1018
1019        while (((RetVal = sem_wait (Sem)) == -1) && (errno == EINTR))
1020        {
1021            continue;   /* Restart if interrupted */
1022        }
1023        if (RetVal != 0)
1024        {
1025            Status = (AE_TIME);
1026        }
1027        break;
1028
1029
1030    /* Wait with MsecTimeout */
1031
1032    default:
1033
1034#ifdef ACPI_USE_ALTERNATE_TIMEOUT
1035        /*
1036         * Alternate timeout mechanism for environments where
1037         * sem_timedwait is not available or does not work properly.
1038         */
1039        while (MsecTimeout)
1040        {
1041            if (sem_trywait (Sem) == 0)
1042            {
1043                /* Got the semaphore */
1044                return (AE_OK);
1045            }
1046
1047            if (MsecTimeout >= 10)
1048            {
1049                MsecTimeout -= 10;
1050                usleep (10 * ACPI_USEC_PER_MSEC); /* ten milliseconds */
1051            }
1052            else
1053            {
1054                MsecTimeout--;
1055                usleep (ACPI_USEC_PER_MSEC); /* one millisecond */
1056            }
1057        }
1058        Status = (AE_TIME);
1059#else
1060        /*
1061         * The interface to sem_timedwait is an absolute time, so we need to
1062         * get the current time, then add in the millisecond Timeout value.
1063         */
1064        if (clock_gettime (CLOCK_REALTIME, &Time) == -1)
1065        {
1066            perror ("clock_gettime");
1067            return (AE_TIME);
1068        }
1069
1070        Time.tv_sec += (MsecTimeout / ACPI_MSEC_PER_SEC);
1071        Time.tv_nsec += ((MsecTimeout % ACPI_MSEC_PER_SEC) * ACPI_NSEC_PER_MSEC);
1072
1073        /* Handle nanosecond overflow (field must be less than one second) */
1074
1075        if (Time.tv_nsec >= ACPI_NSEC_PER_SEC)
1076        {
1077            Time.tv_sec += (Time.tv_nsec / ACPI_NSEC_PER_SEC);
1078            Time.tv_nsec = (Time.tv_nsec % ACPI_NSEC_PER_SEC);
1079        }
1080
1081        while (((RetVal = sem_timedwait (Sem, &Time)) == -1) && (errno == EINTR))
1082        {
1083            continue;   /* Restart if interrupted */
1084
1085        }
1086
1087        if (RetVal != 0)
1088        {
1089            if (errno != ETIMEDOUT)
1090            {
1091                perror ("sem_timedwait");
1092            }
1093            Status = (AE_TIME);
1094        }
1095#endif
1096        break;
1097    }
1098
1099    return (Status);
1100}
1101
1102
1103/******************************************************************************
1104 *
1105 * FUNCTION:    AcpiOsSignalSemaphore
1106 *
1107 * PARAMETERS:  Handle              - Handle returned by AcpiOsCreateSemaphore
1108 *              Units               - Number of units to send
1109 *
1110 * RETURN:      Status
1111 *
1112 * DESCRIPTION: Send units
1113 *
1114 *****************************************************************************/
1115
1116ACPI_STATUS
1117AcpiOsSignalSemaphore (
1118    ACPI_HANDLE         Handle,
1119    UINT32              Units)
1120{
1121    sem_t               *Sem = (sem_t *)Handle;
1122
1123
1124    if (!Sem)
1125    {
1126        return (AE_BAD_PARAMETER);
1127    }
1128
1129    if (sem_post (Sem) == -1)
1130    {
1131        return (AE_LIMIT);
1132    }
1133
1134    return (AE_OK);
1135}
1136
1137#endif /* ACPI_SINGLE_THREADED */
1138
1139
1140/******************************************************************************
1141 *
1142 * FUNCTION:    Spinlock interfaces
1143 *
1144 * DESCRIPTION: Map these interfaces to semaphore interfaces
1145 *
1146 *****************************************************************************/
1147
1148ACPI_STATUS
1149AcpiOsCreateLock (
1150    ACPI_SPINLOCK           *OutHandle)
1151{
1152
1153    return (AcpiOsCreateSemaphore (1, 1, OutHandle));
1154}
1155
1156
1157void
1158AcpiOsDeleteLock (
1159    ACPI_SPINLOCK           Handle)
1160{
1161    AcpiOsDeleteSemaphore (Handle);
1162}
1163
1164
1165ACPI_CPU_FLAGS
1166AcpiOsAcquireLock (
1167    ACPI_HANDLE             Handle)
1168{
1169    AcpiOsWaitSemaphore (Handle, 1, 0xFFFF);
1170    return (0);
1171}
1172
1173
1174void
1175AcpiOsReleaseLock (
1176    ACPI_SPINLOCK           Handle,
1177    ACPI_CPU_FLAGS          Flags)
1178{
1179    AcpiOsSignalSemaphore (Handle, 1);
1180}
1181
1182
1183/******************************************************************************
1184 *
1185 * FUNCTION:    AcpiOsInstallInterruptHandler
1186 *
1187 * PARAMETERS:  InterruptNumber     - Level handler should respond to.
1188 *              Isr                 - Address of the ACPI interrupt handler
1189 *              ExceptPtr           - Where status is returned
1190 *
1191 * RETURN:      Handle to the newly installed handler.
1192 *
1193 * DESCRIPTION: Install an interrupt handler. Used to install the ACPI
1194 *              OS-independent handler.
1195 *
1196 *****************************************************************************/
1197
1198UINT32
1199AcpiOsInstallInterruptHandler (
1200    UINT32                  InterruptNumber,
1201    ACPI_OSD_HANDLER        ServiceRoutine,
1202    void                    *Context)
1203{
1204
1205    return (AE_OK);
1206}
1207
1208
1209/******************************************************************************
1210 *
1211 * FUNCTION:    AcpiOsRemoveInterruptHandler
1212 *
1213 * PARAMETERS:  Handle              - Returned when handler was installed
1214 *
1215 * RETURN:      Status
1216 *
1217 * DESCRIPTION: Uninstalls an interrupt handler.
1218 *
1219 *****************************************************************************/
1220
1221ACPI_STATUS
1222AcpiOsRemoveInterruptHandler (
1223    UINT32                  InterruptNumber,
1224    ACPI_OSD_HANDLER        ServiceRoutine)
1225{
1226
1227    return (AE_OK);
1228}
1229
1230
1231/******************************************************************************
1232 *
1233 * FUNCTION:    AcpiOsStall
1234 *
1235 * PARAMETERS:  microseconds        - Time to sleep
1236 *
1237 * RETURN:      Blocks until sleep is completed.
1238 *
1239 * DESCRIPTION: Sleep at microsecond granularity
1240 *
1241 *****************************************************************************/
1242
1243void
1244AcpiOsStall (
1245    UINT32                  microseconds)
1246{
1247
1248    if (microseconds)
1249    {
1250        usleep (microseconds);
1251    }
1252}
1253
1254
1255/******************************************************************************
1256 *
1257 * FUNCTION:    AcpiOsSleep
1258 *
1259 * PARAMETERS:  milliseconds        - Time to sleep
1260 *
1261 * RETURN:      Blocks until sleep is completed.
1262 *
1263 * DESCRIPTION: Sleep at millisecond granularity
1264 *
1265 *****************************************************************************/
1266
1267void
1268AcpiOsSleep (
1269    UINT64                  milliseconds)
1270{
1271
1272    /* Sleep for whole seconds */
1273
1274    sleep (milliseconds / ACPI_MSEC_PER_SEC);
1275
1276    /*
1277     * Sleep for remaining microseconds.
1278     * Arg to usleep() is in usecs and must be less than 1,000,000 (1 second).
1279     */
1280    usleep ((milliseconds % ACPI_MSEC_PER_SEC) * ACPI_USEC_PER_MSEC);
1281}
1282
1283
1284/******************************************************************************
1285 *
1286 * FUNCTION:    AcpiOsGetTimer
1287 *
1288 * PARAMETERS:  None
1289 *
1290 * RETURN:      Current time in 100 nanosecond units
1291 *
1292 * DESCRIPTION: Get the current system time
1293 *
1294 *****************************************************************************/
1295
1296UINT64
1297AcpiOsGetTimer (
1298    void)
1299{
1300    struct timeval          time;
1301
1302
1303    /* This timer has sufficient resolution for user-space application code */
1304
1305    gettimeofday (&time, NULL);
1306
1307    /* (Seconds * 10^7 = 100ns(10^-7)) + (Microseconds(10^-6) * 10^1 = 100ns) */
1308
1309    return (((UINT64) time.tv_sec * ACPI_100NSEC_PER_SEC) +
1310            ((UINT64) time.tv_usec * ACPI_100NSEC_PER_USEC));
1311}
1312
1313
1314/******************************************************************************
1315 *
1316 * FUNCTION:    AcpiOsReadPciConfiguration
1317 *
1318 * PARAMETERS:  PciId               - Seg/Bus/Dev
1319 *              PciRegister         - Device Register
1320 *              Value               - Buffer where value is placed
1321 *              Width               - Number of bits
1322 *
1323 * RETURN:      Status
1324 *
1325 * DESCRIPTION: Read data from PCI configuration space
1326 *
1327 *****************************************************************************/
1328
1329ACPI_STATUS
1330AcpiOsReadPciConfiguration (
1331    ACPI_PCI_ID             *PciId,
1332    UINT32                  PciRegister,
1333    UINT64                  *Value,
1334    UINT32                  Width)
1335{
1336
1337    *Value = 0;
1338    return (AE_OK);
1339}
1340
1341
1342/******************************************************************************
1343 *
1344 * FUNCTION:    AcpiOsWritePciConfiguration
1345 *
1346 * PARAMETERS:  PciId               - Seg/Bus/Dev
1347 *              PciRegister         - Device Register
1348 *              Value               - Value to be written
1349 *              Width               - Number of bits
1350 *
1351 * RETURN:      Status.
1352 *
1353 * DESCRIPTION: Write data to PCI configuration space
1354 *
1355 *****************************************************************************/
1356
1357ACPI_STATUS
1358AcpiOsWritePciConfiguration (
1359    ACPI_PCI_ID             *PciId,
1360    UINT32                  PciRegister,
1361    UINT64                  Value,
1362    UINT32                  Width)
1363{
1364
1365    return (AE_OK);
1366}
1367
1368
1369/******************************************************************************
1370 *
1371 * FUNCTION:    AcpiOsReadPort
1372 *
1373 * PARAMETERS:  Address             - Address of I/O port/register to read
1374 *              Value               - Where value is placed
1375 *              Width               - Number of bits
1376 *
1377 * RETURN:      Value read from port
1378 *
1379 * DESCRIPTION: Read data from an I/O port or register
1380 *
1381 *****************************************************************************/
1382
1383ACPI_STATUS
1384AcpiOsReadPort (
1385    ACPI_IO_ADDRESS         Address,
1386    UINT32                  *Value,
1387    UINT32                  Width)
1388{
1389
1390    switch (Width)
1391    {
1392    case 8:
1393
1394        *Value = 0xFF;
1395        break;
1396
1397    case 16:
1398
1399        *Value = 0xFFFF;
1400        break;
1401
1402    case 32:
1403
1404        *Value = 0xFFFFFFFF;
1405        break;
1406
1407    default:
1408
1409        return (AE_BAD_PARAMETER);
1410    }
1411
1412    return (AE_OK);
1413}
1414
1415
1416/******************************************************************************
1417 *
1418 * FUNCTION:    AcpiOsWritePort
1419 *
1420 * PARAMETERS:  Address             - Address of I/O port/register to write
1421 *              Value               - Value to write
1422 *              Width               - Number of bits
1423 *
1424 * RETURN:      None
1425 *
1426 * DESCRIPTION: Write data to an I/O port or register
1427 *
1428 *****************************************************************************/
1429
1430ACPI_STATUS
1431AcpiOsWritePort (
1432    ACPI_IO_ADDRESS         Address,
1433    UINT32                  Value,
1434    UINT32                  Width)
1435{
1436
1437    return (AE_OK);
1438}
1439
1440
1441/******************************************************************************
1442 *
1443 * FUNCTION:    AcpiOsReadMemory
1444 *
1445 * PARAMETERS:  Address             - Physical Memory Address to read
1446 *              Value               - Where value is placed
1447 *              Width               - Number of bits (8,16,32, or 64)
1448 *
1449 * RETURN:      Value read from physical memory address. Always returned
1450 *              as a 64-bit integer, regardless of the read width.
1451 *
1452 * DESCRIPTION: Read data from a physical memory address
1453 *
1454 *****************************************************************************/
1455
1456ACPI_STATUS
1457AcpiOsReadMemory (
1458    ACPI_PHYSICAL_ADDRESS   Address,
1459    UINT64                  *Value,
1460    UINT32                  Width)
1461{
1462
1463    switch (Width)
1464    {
1465    case 8:
1466    case 16:
1467    case 32:
1468    case 64:
1469
1470        *Value = 0;
1471        break;
1472
1473    default:
1474
1475        return (AE_BAD_PARAMETER);
1476    }
1477    return (AE_OK);
1478}
1479
1480
1481/******************************************************************************
1482 *
1483 * FUNCTION:    AcpiOsWriteMemory
1484 *
1485 * PARAMETERS:  Address             - Physical Memory Address to write
1486 *              Value               - Value to write
1487 *              Width               - Number of bits (8,16,32, or 64)
1488 *
1489 * RETURN:      None
1490 *
1491 * DESCRIPTION: Write data to a physical memory address
1492 *
1493 *****************************************************************************/
1494
1495ACPI_STATUS
1496AcpiOsWriteMemory (
1497    ACPI_PHYSICAL_ADDRESS   Address,
1498    UINT64                  Value,
1499    UINT32                  Width)
1500{
1501
1502    return (AE_OK);
1503}
1504
1505
1506/******************************************************************************
1507 *
1508 * FUNCTION:    AcpiOsReadable
1509 *
1510 * PARAMETERS:  Pointer             - Area to be verified
1511 *              Length              - Size of area
1512 *
1513 * RETURN:      TRUE if readable for entire length
1514 *
1515 * DESCRIPTION: Verify that a pointer is valid for reading
1516 *
1517 *****************************************************************************/
1518
1519BOOLEAN
1520AcpiOsReadable (
1521    void                    *Pointer,
1522    ACPI_SIZE               Length)
1523{
1524
1525    return (TRUE);
1526}
1527
1528
1529/******************************************************************************
1530 *
1531 * FUNCTION:    AcpiOsWritable
1532 *
1533 * PARAMETERS:  Pointer             - Area to be verified
1534 *              Length              - Size of area
1535 *
1536 * RETURN:      TRUE if writable for entire length
1537 *
1538 * DESCRIPTION: Verify that a pointer is valid for writing
1539 *
1540 *****************************************************************************/
1541
1542BOOLEAN
1543AcpiOsWritable (
1544    void                    *Pointer,
1545    ACPI_SIZE               Length)
1546{
1547
1548    return (TRUE);
1549}
1550
1551
1552/******************************************************************************
1553 *
1554 * FUNCTION:    AcpiOsSignal
1555 *
1556 * PARAMETERS:  Function            - ACPI A signal function code
1557 *              Info                - Pointer to function-dependent structure
1558 *
1559 * RETURN:      Status
1560 *
1561 * DESCRIPTION: Miscellaneous functions. Example implementation only.
1562 *
1563 *****************************************************************************/
1564
1565ACPI_STATUS
1566AcpiOsSignal (
1567    UINT32                  Function,
1568    void                    *Info)
1569{
1570
1571    switch (Function)
1572    {
1573    case ACPI_SIGNAL_FATAL:
1574
1575        break;
1576
1577    case ACPI_SIGNAL_BREAKPOINT:
1578
1579        break;
1580
1581    default:
1582
1583        break;
1584    }
1585
1586    return (AE_OK);
1587}
1588
1589/* Optional multi-thread support */
1590
1591#ifndef ACPI_SINGLE_THREADED
1592/******************************************************************************
1593 *
1594 * FUNCTION:    AcpiOsGetThreadId
1595 *
1596 * PARAMETERS:  None
1597 *
1598 * RETURN:      Id of the running thread
1599 *
1600 * DESCRIPTION: Get the ID of the current (running) thread
1601 *
1602 *****************************************************************************/
1603
1604ACPI_THREAD_ID
1605AcpiOsGetThreadId (
1606    void)
1607{
1608    pthread_t               thread;
1609
1610
1611    thread = pthread_self();
1612    return (ACPI_CAST_PTHREAD_T (thread));
1613}
1614
1615
1616/******************************************************************************
1617 *
1618 * FUNCTION:    AcpiOsExecute
1619 *
1620 * PARAMETERS:  Type                - Type of execution
1621 *              Function            - Address of the function to execute
1622 *              Context             - Passed as a parameter to the function
1623 *
1624 * RETURN:      Status.
1625 *
1626 * DESCRIPTION: Execute a new thread
1627 *
1628 *****************************************************************************/
1629
1630ACPI_STATUS
1631AcpiOsExecute (
1632    ACPI_EXECUTE_TYPE       Type,
1633    ACPI_OSD_EXEC_CALLBACK  Function,
1634    void                    *Context)
1635{
1636    pthread_t               thread;
1637    int                     ret;
1638
1639
1640    ret = pthread_create (&thread, NULL, (PTHREAD_CALLBACK) Function, Context);
1641    if (ret)
1642    {
1643        AcpiOsPrintf("Create thread failed");
1644    }
1645    return (0);
1646}
1647
1648#else /* ACPI_SINGLE_THREADED */
1649ACPI_THREAD_ID
1650AcpiOsGetThreadId (
1651    void)
1652{
1653    return (1);
1654}
1655
1656ACPI_STATUS
1657AcpiOsExecute (
1658    ACPI_EXECUTE_TYPE       Type,
1659    ACPI_OSD_EXEC_CALLBACK  Function,
1660    void                    *Context)
1661{
1662
1663    Function (Context);
1664
1665    return (AE_OK);
1666}
1667
1668#endif /* ACPI_SINGLE_THREADED */
1669
1670
1671/******************************************************************************
1672 *
1673 * FUNCTION:    AcpiOsWaitEventsComplete
1674 *
1675 * PARAMETERS:  None
1676 *
1677 * RETURN:      None
1678 *
1679 * DESCRIPTION: Wait for all asynchronous events to complete. This
1680 *              implementation does nothing.
1681 *
1682 *****************************************************************************/
1683
1684void
1685AcpiOsWaitEventsComplete (
1686    void)
1687{
1688    return;
1689}
1690