10d02842fSSascha Wildner /******************************************************************************
20d02842fSSascha Wildner *
30d02842fSSascha Wildner * Module Name: exsystem - Interface to OS services
40d02842fSSascha Wildner *
50d02842fSSascha Wildner *****************************************************************************/
60d02842fSSascha Wildner
7b4315fc7SSascha Wildner /******************************************************************************
8b4315fc7SSascha Wildner *
9b4315fc7SSascha Wildner * 1. Copyright Notice
10b4315fc7SSascha Wildner *
11*383048acSSascha Wildner * Some or all of this work - Copyright (c) 1999 - 2021, Intel Corp.
120d02842fSSascha Wildner * All rights reserved.
130d02842fSSascha Wildner *
14b4315fc7SSascha Wildner * 2. License
15b4315fc7SSascha Wildner *
16b4315fc7SSascha Wildner * 2.1. This is your license from Intel Corp. under its intellectual property
17b4315fc7SSascha Wildner * rights. You may have additional license terms from the party that provided
18b4315fc7SSascha Wildner * you this software, covering your right to use that party's intellectual
19b4315fc7SSascha Wildner * property rights.
20b4315fc7SSascha Wildner *
21b4315fc7SSascha Wildner * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22b4315fc7SSascha Wildner * copy of the source code appearing in this file ("Covered Code") an
23b4315fc7SSascha Wildner * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24b4315fc7SSascha Wildner * base code distributed originally by Intel ("Original Intel Code") to copy,
25b4315fc7SSascha Wildner * make derivatives, distribute, use and display any portion of the Covered
26b4315fc7SSascha Wildner * Code in any form, with the right to sublicense such rights; and
27b4315fc7SSascha Wildner *
28b4315fc7SSascha Wildner * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29b4315fc7SSascha Wildner * license (with the right to sublicense), under only those claims of Intel
30b4315fc7SSascha Wildner * patents that are infringed by the Original Intel Code, to make, use, sell,
31b4315fc7SSascha Wildner * offer to sell, and import the Covered Code and derivative works thereof
32b4315fc7SSascha Wildner * solely to the minimum extent necessary to exercise the above copyright
33b4315fc7SSascha Wildner * license, and in no event shall the patent license extend to any additions
34b4315fc7SSascha Wildner * to or modifications of the Original Intel Code. No other license or right
35b4315fc7SSascha Wildner * is granted directly or by implication, estoppel or otherwise;
36b4315fc7SSascha Wildner *
37b4315fc7SSascha Wildner * The above copyright and patent license is granted only if the following
38b4315fc7SSascha Wildner * conditions are met:
39b4315fc7SSascha Wildner *
40b4315fc7SSascha Wildner * 3. Conditions
41b4315fc7SSascha Wildner *
42b4315fc7SSascha Wildner * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43b4315fc7SSascha Wildner * Redistribution of source code of any substantial portion of the Covered
44b4315fc7SSascha Wildner * Code or modification with rights to further distribute source must include
45b4315fc7SSascha Wildner * the above Copyright Notice, the above License, this list of Conditions,
46b4315fc7SSascha Wildner * and the following Disclaimer and Export Compliance provision. In addition,
47b4315fc7SSascha Wildner * Licensee must cause all Covered Code to which Licensee contributes to
48b4315fc7SSascha Wildner * contain a file documenting the changes Licensee made to create that Covered
49b4315fc7SSascha Wildner * Code and the date of any change. Licensee must include in that file the
50b4315fc7SSascha Wildner * documentation of any changes made by any predecessor Licensee. Licensee
51b4315fc7SSascha Wildner * must include a prominent statement that the modification is derived,
52b4315fc7SSascha Wildner * directly or indirectly, from Original Intel Code.
53b4315fc7SSascha Wildner *
54b4315fc7SSascha Wildner * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55b4315fc7SSascha Wildner * Redistribution of source code of any substantial portion of the Covered
56b4315fc7SSascha Wildner * Code or modification without rights to further distribute source must
57b4315fc7SSascha Wildner * include the following Disclaimer and Export Compliance provision in the
58b4315fc7SSascha Wildner * documentation and/or other materials provided with distribution. In
59b4315fc7SSascha Wildner * addition, Licensee may not authorize further sublicense of source of any
60b4315fc7SSascha Wildner * portion of the Covered Code, and must include terms to the effect that the
61b4315fc7SSascha Wildner * license from Licensee to its licensee is limited to the intellectual
62b4315fc7SSascha Wildner * property embodied in the software Licensee provides to its licensee, and
63b4315fc7SSascha Wildner * not to intellectual property embodied in modifications its licensee may
64b4315fc7SSascha Wildner * make.
65b4315fc7SSascha Wildner *
66b4315fc7SSascha Wildner * 3.3. Redistribution of Executable. Redistribution in executable form of any
67b4315fc7SSascha Wildner * substantial portion of the Covered Code or modification must reproduce the
68b4315fc7SSascha Wildner * above Copyright Notice, and the following Disclaimer and Export Compliance
69b4315fc7SSascha Wildner * provision in the documentation and/or other materials provided with the
70b4315fc7SSascha Wildner * distribution.
71b4315fc7SSascha Wildner *
72b4315fc7SSascha Wildner * 3.4. Intel retains all right, title, and interest in and to the Original
73b4315fc7SSascha Wildner * Intel Code.
74b4315fc7SSascha Wildner *
75b4315fc7SSascha Wildner * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76b4315fc7SSascha Wildner * Intel shall be used in advertising or otherwise to promote the sale, use or
77b4315fc7SSascha Wildner * other dealings in products derived from or relating to the Covered Code
78b4315fc7SSascha Wildner * without prior written authorization from Intel.
79b4315fc7SSascha Wildner *
80b4315fc7SSascha Wildner * 4. Disclaimer and Export Compliance
81b4315fc7SSascha Wildner *
82b4315fc7SSascha Wildner * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83b4315fc7SSascha Wildner * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84b4315fc7SSascha Wildner * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85b4315fc7SSascha Wildner * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86b4315fc7SSascha Wildner * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87b4315fc7SSascha Wildner * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88b4315fc7SSascha Wildner * PARTICULAR PURPOSE.
89b4315fc7SSascha Wildner *
90b4315fc7SSascha Wildner * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91b4315fc7SSascha Wildner * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92b4315fc7SSascha Wildner * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93b4315fc7SSascha Wildner * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94b4315fc7SSascha Wildner * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95b4315fc7SSascha Wildner * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96b4315fc7SSascha Wildner * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97b4315fc7SSascha Wildner * LIMITED REMEDY.
98b4315fc7SSascha Wildner *
99b4315fc7SSascha Wildner * 4.3. Licensee shall not export, either directly or indirectly, any of this
100b4315fc7SSascha Wildner * software or system incorporating such software without first obtaining any
101b4315fc7SSascha Wildner * required license or other approval from the U. S. Department of Commerce or
102b4315fc7SSascha Wildner * any other agency or department of the United States Government. In the
103b4315fc7SSascha Wildner * event Licensee exports any such software from the United States or
104b4315fc7SSascha Wildner * re-exports any such software from a foreign destination, Licensee shall
105b4315fc7SSascha Wildner * ensure that the distribution and export/re-export of the software is in
106b4315fc7SSascha Wildner * compliance with all laws, regulations, orders, or other restrictions of the
107b4315fc7SSascha Wildner * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108b4315fc7SSascha Wildner * any of its subsidiaries will export/re-export any technical data, process,
109b4315fc7SSascha Wildner * software, or service, directly or indirectly, to any country for which the
110b4315fc7SSascha Wildner * United States government or any agency thereof requires an export license,
111b4315fc7SSascha Wildner * other governmental approval, or letter of assurance, without first obtaining
112b4315fc7SSascha Wildner * such license, approval or letter.
113b4315fc7SSascha Wildner *
114b4315fc7SSascha Wildner *****************************************************************************
115b4315fc7SSascha Wildner *
116b4315fc7SSascha Wildner * Alternatively, you may choose to be licensed under the terms of the
117b4315fc7SSascha Wildner * following license:
118b4315fc7SSascha Wildner *
1190d02842fSSascha Wildner * Redistribution and use in source and binary forms, with or without
1200d02842fSSascha Wildner * modification, are permitted provided that the following conditions
1210d02842fSSascha Wildner * are met:
1220d02842fSSascha Wildner * 1. Redistributions of source code must retain the above copyright
1230d02842fSSascha Wildner * notice, this list of conditions, and the following disclaimer,
1240d02842fSSascha Wildner * without modification.
1250d02842fSSascha Wildner * 2. Redistributions in binary form must reproduce at minimum a disclaimer
1260d02842fSSascha Wildner * substantially similar to the "NO WARRANTY" disclaimer below
1270d02842fSSascha Wildner * ("Disclaimer") and any redistribution must be conditioned upon
1280d02842fSSascha Wildner * including a substantially similar Disclaimer requirement for further
1290d02842fSSascha Wildner * binary redistribution.
1300d02842fSSascha Wildner * 3. Neither the names of the above-listed copyright holders nor the names
1310d02842fSSascha Wildner * of any contributors may be used to endorse or promote products derived
1320d02842fSSascha Wildner * from this software without specific prior written permission.
1330d02842fSSascha Wildner *
134b4315fc7SSascha Wildner * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135b4315fc7SSascha Wildner * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136b4315fc7SSascha Wildner * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137b4315fc7SSascha Wildner * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138b4315fc7SSascha Wildner * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139b4315fc7SSascha Wildner * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140b4315fc7SSascha Wildner * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141b4315fc7SSascha Wildner * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142b4315fc7SSascha Wildner * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143b4315fc7SSascha Wildner * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144b4315fc7SSascha Wildner * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145b4315fc7SSascha Wildner *
146b4315fc7SSascha Wildner * Alternatively, you may choose to be licensed under the terms of the
1470d02842fSSascha Wildner * GNU General Public License ("GPL") version 2 as published by the Free
1480d02842fSSascha Wildner * Software Foundation.
1490d02842fSSascha Wildner *
150b4315fc7SSascha Wildner *****************************************************************************/
1510d02842fSSascha Wildner
1520d02842fSSascha Wildner #include "acpi.h"
1530d02842fSSascha Wildner #include "accommon.h"
1540d02842fSSascha Wildner #include "acinterp.h"
1550d02842fSSascha Wildner
1560d02842fSSascha Wildner #define _COMPONENT ACPI_EXECUTER
1570d02842fSSascha Wildner ACPI_MODULE_NAME ("exsystem")
1580d02842fSSascha Wildner
1590d02842fSSascha Wildner
1600d02842fSSascha Wildner /*******************************************************************************
1610d02842fSSascha Wildner *
1620d02842fSSascha Wildner * FUNCTION: AcpiExSystemWaitSemaphore
1630d02842fSSascha Wildner *
1640d02842fSSascha Wildner * PARAMETERS: Semaphore - Semaphore to wait on
1650d02842fSSascha Wildner * Timeout - Max time to wait
1660d02842fSSascha Wildner *
1670d02842fSSascha Wildner * RETURN: Status
1680d02842fSSascha Wildner *
1690d02842fSSascha Wildner * DESCRIPTION: Implements a semaphore wait with a check to see if the
1700d02842fSSascha Wildner * semaphore is available immediately. If it is not, the
1710d02842fSSascha Wildner * interpreter is released before waiting.
1720d02842fSSascha Wildner *
1730d02842fSSascha Wildner ******************************************************************************/
1740d02842fSSascha Wildner
1750d02842fSSascha Wildner ACPI_STATUS
AcpiExSystemWaitSemaphore(ACPI_SEMAPHORE Semaphore,UINT16 Timeout)1760d02842fSSascha Wildner AcpiExSystemWaitSemaphore (
1770d02842fSSascha Wildner ACPI_SEMAPHORE Semaphore,
1780d02842fSSascha Wildner UINT16 Timeout)
1790d02842fSSascha Wildner {
1800d02842fSSascha Wildner ACPI_STATUS Status;
1810d02842fSSascha Wildner
1820d02842fSSascha Wildner
1830d02842fSSascha Wildner ACPI_FUNCTION_TRACE (ExSystemWaitSemaphore);
1840d02842fSSascha Wildner
1850d02842fSSascha Wildner
1860d02842fSSascha Wildner Status = AcpiOsWaitSemaphore (Semaphore, 1, ACPI_DO_NOT_WAIT);
1870d02842fSSascha Wildner if (ACPI_SUCCESS (Status))
1880d02842fSSascha Wildner {
1890d02842fSSascha Wildner return_ACPI_STATUS (Status);
1900d02842fSSascha Wildner }
1910d02842fSSascha Wildner
1920d02842fSSascha Wildner if (Status == AE_TIME)
1930d02842fSSascha Wildner {
1940d02842fSSascha Wildner /* We must wait, so unlock the interpreter */
1950d02842fSSascha Wildner
1966a0135c2SSascha Wildner AcpiExExitInterpreter ();
1970d02842fSSascha Wildner Status = AcpiOsWaitSemaphore (Semaphore, 1, Timeout);
1980d02842fSSascha Wildner
1990d02842fSSascha Wildner ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
2000d02842fSSascha Wildner "*** Thread awake after blocking, %s\n",
2010d02842fSSascha Wildner AcpiFormatException (Status)));
2020d02842fSSascha Wildner
2030d02842fSSascha Wildner /* Reacquire the interpreter */
2040d02842fSSascha Wildner
2056a0135c2SSascha Wildner AcpiExEnterInterpreter ();
2060d02842fSSascha Wildner }
2070d02842fSSascha Wildner
2080d02842fSSascha Wildner return_ACPI_STATUS (Status);
2090d02842fSSascha Wildner }
2100d02842fSSascha Wildner
2110d02842fSSascha Wildner
2120d02842fSSascha Wildner /*******************************************************************************
2130d02842fSSascha Wildner *
2140d02842fSSascha Wildner * FUNCTION: AcpiExSystemWaitMutex
2150d02842fSSascha Wildner *
2160d02842fSSascha Wildner * PARAMETERS: Mutex - Mutex to wait on
2170d02842fSSascha Wildner * Timeout - Max time to wait
2180d02842fSSascha Wildner *
2190d02842fSSascha Wildner * RETURN: Status
2200d02842fSSascha Wildner *
2210d02842fSSascha Wildner * DESCRIPTION: Implements a mutex wait with a check to see if the
2220d02842fSSascha Wildner * mutex is available immediately. If it is not, the
2230d02842fSSascha Wildner * interpreter is released before waiting.
2240d02842fSSascha Wildner *
2250d02842fSSascha Wildner ******************************************************************************/
2260d02842fSSascha Wildner
2270d02842fSSascha Wildner ACPI_STATUS
AcpiExSystemWaitMutex(ACPI_MUTEX Mutex,UINT16 Timeout)2280d02842fSSascha Wildner AcpiExSystemWaitMutex (
2290d02842fSSascha Wildner ACPI_MUTEX Mutex,
2300d02842fSSascha Wildner UINT16 Timeout)
2310d02842fSSascha Wildner {
2320d02842fSSascha Wildner ACPI_STATUS Status;
2330d02842fSSascha Wildner
2340d02842fSSascha Wildner
2350d02842fSSascha Wildner ACPI_FUNCTION_TRACE (ExSystemWaitMutex);
2360d02842fSSascha Wildner
2370d02842fSSascha Wildner
2380d02842fSSascha Wildner Status = AcpiOsAcquireMutex (Mutex, ACPI_DO_NOT_WAIT);
2390d02842fSSascha Wildner if (ACPI_SUCCESS (Status))
2400d02842fSSascha Wildner {
2410d02842fSSascha Wildner return_ACPI_STATUS (Status);
2420d02842fSSascha Wildner }
2430d02842fSSascha Wildner
2440d02842fSSascha Wildner if (Status == AE_TIME)
2450d02842fSSascha Wildner {
2460d02842fSSascha Wildner /* We must wait, so unlock the interpreter */
2470d02842fSSascha Wildner
2486a0135c2SSascha Wildner AcpiExExitInterpreter ();
2490d02842fSSascha Wildner Status = AcpiOsAcquireMutex (Mutex, Timeout);
2500d02842fSSascha Wildner
2510d02842fSSascha Wildner ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
2520d02842fSSascha Wildner "*** Thread awake after blocking, %s\n",
2530d02842fSSascha Wildner AcpiFormatException (Status)));
2540d02842fSSascha Wildner
2550d02842fSSascha Wildner /* Reacquire the interpreter */
2560d02842fSSascha Wildner
2576a0135c2SSascha Wildner AcpiExEnterInterpreter ();
2580d02842fSSascha Wildner }
2590d02842fSSascha Wildner
2600d02842fSSascha Wildner return_ACPI_STATUS (Status);
2610d02842fSSascha Wildner }
2620d02842fSSascha Wildner
2630d02842fSSascha Wildner
2640d02842fSSascha Wildner /*******************************************************************************
2650d02842fSSascha Wildner *
2660d02842fSSascha Wildner * FUNCTION: AcpiExSystemDoStall
2670d02842fSSascha Wildner *
2680d02842fSSascha Wildner * PARAMETERS: HowLong - The amount of time to stall,
2690d02842fSSascha Wildner * in microseconds
2700d02842fSSascha Wildner *
2710d02842fSSascha Wildner * RETURN: Status
2720d02842fSSascha Wildner *
2730d02842fSSascha Wildner * DESCRIPTION: Suspend running thread for specified amount of time.
2740d02842fSSascha Wildner * Note: ACPI specification requires that Stall() does not
2750d02842fSSascha Wildner * relinquish the processor, and delays longer than 100 usec
2760d02842fSSascha Wildner * should use Sleep() instead. We allow stalls up to 255 usec
2770d02842fSSascha Wildner * for compatibility with other interpreters and existing BIOSs.
2780d02842fSSascha Wildner *
2790d02842fSSascha Wildner ******************************************************************************/
2800d02842fSSascha Wildner
2810d02842fSSascha Wildner ACPI_STATUS
AcpiExSystemDoStall(UINT32 HowLong)2820d02842fSSascha Wildner AcpiExSystemDoStall (
2830d02842fSSascha Wildner UINT32 HowLong)
2840d02842fSSascha Wildner {
2850d02842fSSascha Wildner ACPI_STATUS Status = AE_OK;
2860d02842fSSascha Wildner
2870d02842fSSascha Wildner
2880d02842fSSascha Wildner ACPI_FUNCTION_ENTRY ();
2890d02842fSSascha Wildner
2900d02842fSSascha Wildner
2910d02842fSSascha Wildner if (HowLong > 255) /* 255 microseconds */
2920d02842fSSascha Wildner {
2930d02842fSSascha Wildner /*
2940d02842fSSascha Wildner * Longer than 255 usec, this is an error
2950d02842fSSascha Wildner *
2960d02842fSSascha Wildner * (ACPI specifies 100 usec as max, but this gives some slack in
2970d02842fSSascha Wildner * order to support existing BIOSs)
2980d02842fSSascha Wildner */
299820c5b08SSascha Wildner ACPI_ERROR ((AE_INFO,
300820c5b08SSascha Wildner "Time parameter is too large (%u)", HowLong));
3010d02842fSSascha Wildner Status = AE_AML_OPERAND_VALUE;
3020d02842fSSascha Wildner }
3030d02842fSSascha Wildner else
3040d02842fSSascha Wildner {
3050d02842fSSascha Wildner AcpiOsStall (HowLong);
3060d02842fSSascha Wildner }
3070d02842fSSascha Wildner
3080d02842fSSascha Wildner return (Status);
3090d02842fSSascha Wildner }
3100d02842fSSascha Wildner
3110d02842fSSascha Wildner
3120d02842fSSascha Wildner /*******************************************************************************
3130d02842fSSascha Wildner *
3140d02842fSSascha Wildner * FUNCTION: AcpiExSystemDoSleep
3150d02842fSSascha Wildner *
3160d02842fSSascha Wildner * PARAMETERS: HowLong - The amount of time to sleep,
3170d02842fSSascha Wildner * in milliseconds
3180d02842fSSascha Wildner *
3190d02842fSSascha Wildner * RETURN: None
3200d02842fSSascha Wildner *
3210d02842fSSascha Wildner * DESCRIPTION: Sleep the running thread for specified amount of time.
3220d02842fSSascha Wildner *
3230d02842fSSascha Wildner ******************************************************************************/
3240d02842fSSascha Wildner
3250d02842fSSascha Wildner ACPI_STATUS
AcpiExSystemDoSleep(UINT64 HowLong)3260d02842fSSascha Wildner AcpiExSystemDoSleep (
3270d02842fSSascha Wildner UINT64 HowLong)
3280d02842fSSascha Wildner {
3290d02842fSSascha Wildner ACPI_FUNCTION_ENTRY ();
3300d02842fSSascha Wildner
3310d02842fSSascha Wildner
3320d02842fSSascha Wildner /* Since this thread will sleep, we must release the interpreter */
3330d02842fSSascha Wildner
3346a0135c2SSascha Wildner AcpiExExitInterpreter ();
3350d02842fSSascha Wildner
3360d02842fSSascha Wildner /*
3370d02842fSSascha Wildner * For compatibility with other ACPI implementations and to prevent
3380d02842fSSascha Wildner * accidental deep sleeps, limit the sleep time to something reasonable.
3390d02842fSSascha Wildner */
3400d02842fSSascha Wildner if (HowLong > ACPI_MAX_SLEEP)
3410d02842fSSascha Wildner {
3420d02842fSSascha Wildner HowLong = ACPI_MAX_SLEEP;
3430d02842fSSascha Wildner }
3440d02842fSSascha Wildner
3450d02842fSSascha Wildner AcpiOsSleep (HowLong);
3460d02842fSSascha Wildner
3470d02842fSSascha Wildner /* And now we must get the interpreter again */
3480d02842fSSascha Wildner
3496a0135c2SSascha Wildner AcpiExEnterInterpreter ();
3500d02842fSSascha Wildner return (AE_OK);
3510d02842fSSascha Wildner }
3520d02842fSSascha Wildner
3530d02842fSSascha Wildner
3540d02842fSSascha Wildner /*******************************************************************************
3550d02842fSSascha Wildner *
3560d02842fSSascha Wildner * FUNCTION: AcpiExSystemSignalEvent
3570d02842fSSascha Wildner *
3580d02842fSSascha Wildner * PARAMETERS: ObjDesc - The object descriptor for this op
3590d02842fSSascha Wildner *
3600d02842fSSascha Wildner * RETURN: Status
3610d02842fSSascha Wildner *
3620d02842fSSascha Wildner * DESCRIPTION: Provides an access point to perform synchronization operations
3630d02842fSSascha Wildner * within the AML.
3640d02842fSSascha Wildner *
3650d02842fSSascha Wildner ******************************************************************************/
3660d02842fSSascha Wildner
3670d02842fSSascha Wildner ACPI_STATUS
AcpiExSystemSignalEvent(ACPI_OPERAND_OBJECT * ObjDesc)3680d02842fSSascha Wildner AcpiExSystemSignalEvent (
3690d02842fSSascha Wildner ACPI_OPERAND_OBJECT *ObjDesc)
3700d02842fSSascha Wildner {
3710d02842fSSascha Wildner ACPI_STATUS Status = AE_OK;
3720d02842fSSascha Wildner
3730d02842fSSascha Wildner
3740d02842fSSascha Wildner ACPI_FUNCTION_TRACE (ExSystemSignalEvent);
3750d02842fSSascha Wildner
3760d02842fSSascha Wildner
3770d02842fSSascha Wildner if (ObjDesc)
3780d02842fSSascha Wildner {
3790d02842fSSascha Wildner Status = AcpiOsSignalSemaphore (ObjDesc->Event.OsSemaphore, 1);
3800d02842fSSascha Wildner }
3810d02842fSSascha Wildner
3820d02842fSSascha Wildner return_ACPI_STATUS (Status);
3830d02842fSSascha Wildner }
3840d02842fSSascha Wildner
3850d02842fSSascha Wildner
3860d02842fSSascha Wildner /*******************************************************************************
3870d02842fSSascha Wildner *
3880d02842fSSascha Wildner * FUNCTION: AcpiExSystemWaitEvent
3890d02842fSSascha Wildner *
3900d02842fSSascha Wildner * PARAMETERS: TimeDesc - The 'time to delay' object descriptor
3910d02842fSSascha Wildner * ObjDesc - The object descriptor for this op
3920d02842fSSascha Wildner *
3930d02842fSSascha Wildner * RETURN: Status
3940d02842fSSascha Wildner *
3950d02842fSSascha Wildner * DESCRIPTION: Provides an access point to perform synchronization operations
3960d02842fSSascha Wildner * within the AML. This operation is a request to wait for an
3970d02842fSSascha Wildner * event.
3980d02842fSSascha Wildner *
3990d02842fSSascha Wildner ******************************************************************************/
4000d02842fSSascha Wildner
4010d02842fSSascha Wildner ACPI_STATUS
AcpiExSystemWaitEvent(ACPI_OPERAND_OBJECT * TimeDesc,ACPI_OPERAND_OBJECT * ObjDesc)4020d02842fSSascha Wildner AcpiExSystemWaitEvent (
4030d02842fSSascha Wildner ACPI_OPERAND_OBJECT *TimeDesc,
4040d02842fSSascha Wildner ACPI_OPERAND_OBJECT *ObjDesc)
4050d02842fSSascha Wildner {
4060d02842fSSascha Wildner ACPI_STATUS Status = AE_OK;
4070d02842fSSascha Wildner
4080d02842fSSascha Wildner
4090d02842fSSascha Wildner ACPI_FUNCTION_TRACE (ExSystemWaitEvent);
4100d02842fSSascha Wildner
4110d02842fSSascha Wildner
4120d02842fSSascha Wildner if (ObjDesc)
4130d02842fSSascha Wildner {
4140d02842fSSascha Wildner Status = AcpiExSystemWaitSemaphore (ObjDesc->Event.OsSemaphore,
4150d02842fSSascha Wildner (UINT16) TimeDesc->Integer.Value);
4160d02842fSSascha Wildner }
4170d02842fSSascha Wildner
4180d02842fSSascha Wildner return_ACPI_STATUS (Status);
4190d02842fSSascha Wildner }
4200d02842fSSascha Wildner
4210d02842fSSascha Wildner
4220d02842fSSascha Wildner /*******************************************************************************
4230d02842fSSascha Wildner *
4240d02842fSSascha Wildner * FUNCTION: AcpiExSystemResetEvent
4250d02842fSSascha Wildner *
4260d02842fSSascha Wildner * PARAMETERS: ObjDesc - The object descriptor for this op
4270d02842fSSascha Wildner *
4280d02842fSSascha Wildner * RETURN: Status
4290d02842fSSascha Wildner *
4300d02842fSSascha Wildner * DESCRIPTION: Reset an event to a known state.
4310d02842fSSascha Wildner *
4320d02842fSSascha Wildner ******************************************************************************/
4330d02842fSSascha Wildner
4340d02842fSSascha Wildner ACPI_STATUS
AcpiExSystemResetEvent(ACPI_OPERAND_OBJECT * ObjDesc)4350d02842fSSascha Wildner AcpiExSystemResetEvent (
4360d02842fSSascha Wildner ACPI_OPERAND_OBJECT *ObjDesc)
4370d02842fSSascha Wildner {
4380d02842fSSascha Wildner ACPI_STATUS Status = AE_OK;
4390d02842fSSascha Wildner ACPI_SEMAPHORE TempSemaphore;
4400d02842fSSascha Wildner
4410d02842fSSascha Wildner
4420d02842fSSascha Wildner ACPI_FUNCTION_ENTRY ();
4430d02842fSSascha Wildner
4440d02842fSSascha Wildner
4450d02842fSSascha Wildner /*
4460d02842fSSascha Wildner * We are going to simply delete the existing semaphore and
4470d02842fSSascha Wildner * create a new one!
4480d02842fSSascha Wildner */
4490d02842fSSascha Wildner Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0, &TempSemaphore);
4500d02842fSSascha Wildner if (ACPI_SUCCESS (Status))
4510d02842fSSascha Wildner {
4520d02842fSSascha Wildner (void) AcpiOsDeleteSemaphore (ObjDesc->Event.OsSemaphore);
4530d02842fSSascha Wildner ObjDesc->Event.OsSemaphore = TempSemaphore;
4540d02842fSSascha Wildner }
4550d02842fSSascha Wildner
4560d02842fSSascha Wildner return (Status);
4570d02842fSSascha Wildner }
458