1 /******************************************************************************
3 * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.
12 * All rights reserved.
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
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
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;
37 * The above copyright and patent license is granted only if the following
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.
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
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
72 * 3.4. Intel retains all right, title, and interest in and to the Original
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.
80 * 4. Disclaimer and Export Compliance
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
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
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.
114 *****************************************************************************/
117 #define __EVXFEVNT_C__
120 #include "accommon.h"
121 #include "actables.h"
123 #define _COMPONENT ACPI_EVENTS
124 ACPI_MODULE_NAME ("evxfevnt")
127 /*******************************************************************************
129 * FUNCTION: AcpiEnable
135 * DESCRIPTION: Transfers the system into ACPI mode.
137 ******************************************************************************/
143 ACPI_STATUS Status = AE_OK;
146 ACPI_FUNCTION_TRACE (AcpiEnable);
149 /* ACPI tables must be present */
151 if (!AcpiTbTablesLoaded ())
153 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
156 /* Check current mode */
158 if (AcpiHwGetMode() == ACPI_SYS_MODE_ACPI)
160 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "System is already in ACPI mode\n"));
164 /* Transition to ACPI mode */
166 Status = AcpiHwSetMode (ACPI_SYS_MODE_ACPI);
167 if (ACPI_FAILURE (Status))
169 ACPI_ERROR ((AE_INFO, "Could not transition to ACPI mode"));
170 return_ACPI_STATUS (Status);
173 ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
174 "Transition to ACPI mode successful\n"));
177 return_ACPI_STATUS (Status);
180 ACPI_EXPORT_SYMBOL (AcpiEnable)
183 /*******************************************************************************
185 * FUNCTION: AcpiDisable
191 * DESCRIPTION: Transfers the system into LEGACY (non-ACPI) mode.
193 ******************************************************************************/
199 ACPI_STATUS Status = AE_OK;
202 ACPI_FUNCTION_TRACE (AcpiDisable);
205 if (AcpiHwGetMode() == ACPI_SYS_MODE_LEGACY)
207 ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
208 "System is already in legacy (non-ACPI) mode\n"));
212 /* Transition to LEGACY mode */
214 Status = AcpiHwSetMode (ACPI_SYS_MODE_LEGACY);
216 if (ACPI_FAILURE (Status))
218 ACPI_ERROR ((AE_INFO,
219 "Could not exit ACPI mode to legacy mode"));
220 return_ACPI_STATUS (Status);
223 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI mode disabled\n"));
226 return_ACPI_STATUS (Status);
229 ACPI_EXPORT_SYMBOL (AcpiDisable)
232 /*******************************************************************************
234 * FUNCTION: AcpiEnableEvent
236 * PARAMETERS: Event - The fixed eventto be enabled
241 * DESCRIPTION: Enable an ACPI event (fixed)
243 ******************************************************************************/
250 ACPI_STATUS Status = AE_OK;
254 ACPI_FUNCTION_TRACE (AcpiEnableEvent);
257 /* Decode the Fixed Event */
259 if (Event > ACPI_EVENT_MAX)
261 return_ACPI_STATUS (AE_BAD_PARAMETER);
265 * Enable the requested fixed event (by writing a one to the enable
268 Status = AcpiWriteBitRegister (
269 AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
271 if (ACPI_FAILURE (Status))
273 return_ACPI_STATUS (Status);
276 /* Make sure that the hardware responded */
278 Status = AcpiReadBitRegister (
279 AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value);
280 if (ACPI_FAILURE (Status))
282 return_ACPI_STATUS (Status);
287 ACPI_ERROR ((AE_INFO,
288 "Could not enable %s event", AcpiUtGetEventName (Event)));
289 return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
292 return_ACPI_STATUS (Status);
295 ACPI_EXPORT_SYMBOL (AcpiEnableEvent)
298 /*******************************************************************************
300 * FUNCTION: AcpiDisableEvent
302 * PARAMETERS: Event - The fixed event to be disabled
307 * DESCRIPTION: Disable an ACPI event (fixed)
309 ******************************************************************************/
316 ACPI_STATUS Status = AE_OK;
320 ACPI_FUNCTION_TRACE (AcpiDisableEvent);
323 /* Decode the Fixed Event */
325 if (Event > ACPI_EVENT_MAX)
327 return_ACPI_STATUS (AE_BAD_PARAMETER);
331 * Disable the requested fixed event (by writing a zero to the enable
334 Status = AcpiWriteBitRegister (
335 AcpiGbl_FixedEventInfo[Event].EnableRegisterId,
337 if (ACPI_FAILURE (Status))
339 return_ACPI_STATUS (Status);
342 Status = AcpiReadBitRegister (
343 AcpiGbl_FixedEventInfo[Event].EnableRegisterId, &Value);
344 if (ACPI_FAILURE (Status))
346 return_ACPI_STATUS (Status);
351 ACPI_ERROR ((AE_INFO,
352 "Could not disable %s events", AcpiUtGetEventName (Event)));
353 return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
356 return_ACPI_STATUS (Status);
359 ACPI_EXPORT_SYMBOL (AcpiDisableEvent)
362 /*******************************************************************************
364 * FUNCTION: AcpiClearEvent
366 * PARAMETERS: Event - The fixed event to be cleared
370 * DESCRIPTION: Clear an ACPI event (fixed)
372 ******************************************************************************/
378 ACPI_STATUS Status = AE_OK;
381 ACPI_FUNCTION_TRACE (AcpiClearEvent);
384 /* Decode the Fixed Event */
386 if (Event > ACPI_EVENT_MAX)
388 return_ACPI_STATUS (AE_BAD_PARAMETER);
392 * Clear the requested fixed event (By writing a one to the status
395 Status = AcpiWriteBitRegister (
396 AcpiGbl_FixedEventInfo[Event].StatusRegisterId,
399 return_ACPI_STATUS (Status);
402 ACPI_EXPORT_SYMBOL (AcpiClearEvent)
405 /*******************************************************************************
407 * FUNCTION: AcpiGetEventStatus
409 * PARAMETERS: Event - The fixed event
410 * EventStatus - Where the current status of the event will
415 * DESCRIPTION: Obtains and returns the current status of the event
417 ******************************************************************************/
422 ACPI_EVENT_STATUS *EventStatus)
424 ACPI_STATUS Status = AE_OK;
427 ACPI_FUNCTION_TRACE (AcpiGetEventStatus);
432 return_ACPI_STATUS (AE_BAD_PARAMETER);
435 /* Decode the Fixed Event */
437 if (Event > ACPI_EVENT_MAX)
439 return_ACPI_STATUS (AE_BAD_PARAMETER);
442 /* Get the status of the requested fixed event */
444 Status = AcpiReadBitRegister (
445 AcpiGbl_FixedEventInfo[Event].StatusRegisterId, EventStatus);
447 return_ACPI_STATUS (Status);
450 ACPI_EXPORT_SYMBOL (AcpiGetEventStatus)