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 - 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 /*
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 "acpi.h"
157 #include "accommon.h"
158 #include "amlcode.h"
159 #include "acparser.h"
160 #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
177 void
178 AeTableOverride (
179 ACPI_TABLE_HEADER *ExistingTable,
180 ACPI_TABLE_HEADER **NewTable);
181
182 typedef 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
194 struct termios OriginalTermAttributes;
195 int TermAttributesWereSet = 0;
196
197 ACPI_STATUS
198 AcpiUtReadLine (
199 char *Buffer,
200 UINT32 BufferLength,
201 UINT32 *BytesRead);
202
203 static void
204 OsEnterLineEditMode (
205 void);
206
207 static void
208 OsExitLineEditMode (
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
238 static void
OsEnterLineEditMode(void)239 OsEnterLineEditMode (
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
281 static void
OsExitLineEditMode(void)282 OsExitLineEditMode (
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
321 ACPI_STATUS
AcpiOsInitialize(void)322 AcpiOsInitialize (
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
341 ACPI_STATUS
AcpiOsTerminate(void)342 AcpiOsTerminate (
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
364 ACPI_PHYSICAL_ADDRESS
AcpiOsGetRootPointer(void)365 AcpiOsGetRootPointer (
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
388 ACPI_STATUS
AcpiOsPredefinedOverride(const ACPI_PREDEFINED_NAMES * InitVal,ACPI_STRING * NewVal)389 AcpiOsPredefinedOverride (
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
419 ACPI_STATUS
AcpiOsTableOverride(ACPI_TABLE_HEADER * ExistingTable,ACPI_TABLE_HEADER ** NewTable)420 AcpiOsTableOverride (
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
459 ACPI_STATUS
AcpiOsPhysicalTableOverride(ACPI_TABLE_HEADER * ExistingTable,ACPI_PHYSICAL_ADDRESS * NewAddress,UINT32 * NewTableLength)460 AcpiOsPhysicalTableOverride (
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
486 ACPI_STATUS
AcpiOsEnterSleep(UINT8 SleepState,UINT32 RegaValue,UINT32 RegbValue)487 AcpiOsEnterSleep (
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
509 void
AcpiOsRedirectOutput(void * Destination)510 AcpiOsRedirectOutput (
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
531 void ACPI_INTERNAL_VAR_XFACE
AcpiOsPrintf(const char * Fmt,...)532 AcpiOsPrintf (
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
585 void
AcpiOsVprintf(const char * Fmt,va_list Args)586 AcpiOsVprintf (
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
649 ACPI_STATUS
AcpiOsGetLine(char * Buffer,UINT32 BufferLength,UINT32 * BytesRead)650 AcpiOsGetLine (
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
711 void *
AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS where,ACPI_SIZE length)712 AcpiOsMapMemory (
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
735 void
AcpiOsUnmapMemory(void * where,ACPI_SIZE length)736 AcpiOsUnmapMemory (
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
758 void *
AcpiOsAllocate(ACPI_SIZE size)759 AcpiOsAllocate (
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
783 void *
AcpiOsAllocateZeroed(ACPI_SIZE size)784 AcpiOsAllocateZeroed (
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
808 void
AcpiOsFree(void * mem)809 AcpiOsFree (
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
828 ACPI_STATUS
AcpiOsCreateSemaphore(UINT32 MaxUnits,UINT32 InitialUnits,ACPI_HANDLE * OutHandle)829 AcpiOsCreateSemaphore (
830 UINT32 MaxUnits,
831 UINT32 InitialUnits,
832 ACPI_HANDLE *OutHandle)
833 {
834 *OutHandle = (ACPI_HANDLE) 1;
835 return (AE_OK);
836 }
837
838 ACPI_STATUS
AcpiOsDeleteSemaphore(ACPI_HANDLE Handle)839 AcpiOsDeleteSemaphore (
840 ACPI_HANDLE Handle)
841 {
842 return (AE_OK);
843 }
844
845 ACPI_STATUS
AcpiOsWaitSemaphore(ACPI_HANDLE Handle,UINT32 Units,UINT16 Timeout)846 AcpiOsWaitSemaphore (
847 ACPI_HANDLE Handle,
848 UINT32 Units,
849 UINT16 Timeout)
850 {
851 return (AE_OK);
852 }
853
854 ACPI_STATUS
AcpiOsSignalSemaphore(ACPI_HANDLE Handle,UINT32 Units)855 AcpiOsSignalSemaphore (
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
876 ACPI_STATUS
AcpiOsCreateSemaphore(UINT32 MaxUnits,UINT32 InitialUnits,ACPI_HANDLE * OutHandle)877 AcpiOsCreateSemaphore (
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
937 ACPI_STATUS
AcpiOsDeleteSemaphore(ACPI_HANDLE Handle)938 AcpiOsDeleteSemaphore (
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
979 ACPI_STATUS
AcpiOsWaitSemaphore(ACPI_HANDLE Handle,UINT32 Units,UINT16 MsecTimeout)980 AcpiOsWaitSemaphore (
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
1116 ACPI_STATUS
AcpiOsSignalSemaphore(ACPI_HANDLE Handle,UINT32 Units)1117 AcpiOsSignalSemaphore (
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
1148 ACPI_STATUS
AcpiOsCreateLock(ACPI_SPINLOCK * OutHandle)1149 AcpiOsCreateLock (
1150 ACPI_SPINLOCK *OutHandle)
1151 {
1152
1153 return (AcpiOsCreateSemaphore (1, 1, OutHandle));
1154 }
1155
1156
1157 void
AcpiOsDeleteLock(ACPI_SPINLOCK Handle)1158 AcpiOsDeleteLock (
1159 ACPI_SPINLOCK Handle)
1160 {
1161 AcpiOsDeleteSemaphore (Handle);
1162 }
1163
1164
1165 ACPI_CPU_FLAGS
AcpiOsAcquireLock(ACPI_HANDLE Handle)1166 AcpiOsAcquireLock (
1167 ACPI_HANDLE Handle)
1168 {
1169 AcpiOsWaitSemaphore (Handle, 1, 0xFFFF);
1170 return (0);
1171 }
1172
1173
1174 void
AcpiOsReleaseLock(ACPI_SPINLOCK Handle,ACPI_CPU_FLAGS Flags)1175 AcpiOsReleaseLock (
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
1198 UINT32
AcpiOsInstallInterruptHandler(UINT32 InterruptNumber,ACPI_OSD_HANDLER ServiceRoutine,void * Context)1199 AcpiOsInstallInterruptHandler (
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
1221 ACPI_STATUS
AcpiOsRemoveInterruptHandler(UINT32 InterruptNumber,ACPI_OSD_HANDLER ServiceRoutine)1222 AcpiOsRemoveInterruptHandler (
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
1243 void
AcpiOsStall(UINT32 microseconds)1244 AcpiOsStall (
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
1267 void
AcpiOsSleep(UINT64 milliseconds)1268 AcpiOsSleep (
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
1296 UINT64
AcpiOsGetTimer(void)1297 AcpiOsGetTimer (
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
1329 ACPI_STATUS
AcpiOsReadPciConfiguration(ACPI_PCI_ID * PciId,UINT32 PciRegister,UINT64 * Value,UINT32 Width)1330 AcpiOsReadPciConfiguration (
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
1357 ACPI_STATUS
AcpiOsWritePciConfiguration(ACPI_PCI_ID * PciId,UINT32 PciRegister,UINT64 Value,UINT32 Width)1358 AcpiOsWritePciConfiguration (
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
1383 ACPI_STATUS
AcpiOsReadPort(ACPI_IO_ADDRESS Address,UINT32 * Value,UINT32 Width)1384 AcpiOsReadPort (
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
1430 ACPI_STATUS
AcpiOsWritePort(ACPI_IO_ADDRESS Address,UINT32 Value,UINT32 Width)1431 AcpiOsWritePort (
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
1456 ACPI_STATUS
AcpiOsReadMemory(ACPI_PHYSICAL_ADDRESS Address,UINT64 * Value,UINT32 Width)1457 AcpiOsReadMemory (
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
1495 ACPI_STATUS
AcpiOsWriteMemory(ACPI_PHYSICAL_ADDRESS Address,UINT64 Value,UINT32 Width)1496 AcpiOsWriteMemory (
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
1519 BOOLEAN
AcpiOsReadable(void * Pointer,ACPI_SIZE Length)1520 AcpiOsReadable (
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
1542 BOOLEAN
AcpiOsWritable(void * Pointer,ACPI_SIZE Length)1543 AcpiOsWritable (
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
1565 ACPI_STATUS
AcpiOsSignal(UINT32 Function,void * Info)1566 AcpiOsSignal (
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
1604 ACPI_THREAD_ID
AcpiOsGetThreadId(void)1605 AcpiOsGetThreadId (
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
1630 ACPI_STATUS
AcpiOsExecute(ACPI_EXECUTE_TYPE Type,ACPI_OSD_EXEC_CALLBACK Function,void * Context)1631 AcpiOsExecute (
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 */
1649 ACPI_THREAD_ID
AcpiOsGetThreadId(void)1650 AcpiOsGetThreadId (
1651 void)
1652 {
1653 return (1);
1654 }
1655
1656 ACPI_STATUS
AcpiOsExecute(ACPI_EXECUTE_TYPE Type,ACPI_OSD_EXEC_CALLBACK Function,void * Context)1657 AcpiOsExecute (
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
1684 void
AcpiOsWaitEventsComplete(void)1685 AcpiOsWaitEventsComplete (
1686 void)
1687 {
1688 return;
1689 }
1690