1bc36eafdSMike Gerdts /******************************************************************************
2bc36eafdSMike Gerdts *
3bc36eafdSMike Gerdts * Module Name: evxface - External interfaces for ACPI events
4bc36eafdSMike Gerdts *
5bc36eafdSMike Gerdts *****************************************************************************/
6bc36eafdSMike Gerdts
7*35786f68SRobert Mustacchi /******************************************************************************
8*35786f68SRobert Mustacchi *
9*35786f68SRobert Mustacchi * 1. Copyright Notice
10*35786f68SRobert Mustacchi *
11*35786f68SRobert Mustacchi * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
12bc36eafdSMike Gerdts * All rights reserved.
13bc36eafdSMike Gerdts *
14*35786f68SRobert Mustacchi * 2. License
15*35786f68SRobert Mustacchi *
16*35786f68SRobert Mustacchi * 2.1. This is your license from Intel Corp. under its intellectual property
17*35786f68SRobert Mustacchi * rights. You may have additional license terms from the party that provided
18*35786f68SRobert Mustacchi * you this software, covering your right to use that party's intellectual
19*35786f68SRobert Mustacchi * property rights.
20*35786f68SRobert Mustacchi *
21*35786f68SRobert Mustacchi * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22*35786f68SRobert Mustacchi * copy of the source code appearing in this file ("Covered Code") an
23*35786f68SRobert Mustacchi * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24*35786f68SRobert Mustacchi * base code distributed originally by Intel ("Original Intel Code") to copy,
25*35786f68SRobert Mustacchi * make derivatives, distribute, use and display any portion of the Covered
26*35786f68SRobert Mustacchi * Code in any form, with the right to sublicense such rights; and
27*35786f68SRobert Mustacchi *
28*35786f68SRobert Mustacchi * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29*35786f68SRobert Mustacchi * license (with the right to sublicense), under only those claims of Intel
30*35786f68SRobert Mustacchi * patents that are infringed by the Original Intel Code, to make, use, sell,
31*35786f68SRobert Mustacchi * offer to sell, and import the Covered Code and derivative works thereof
32*35786f68SRobert Mustacchi * solely to the minimum extent necessary to exercise the above copyright
33*35786f68SRobert Mustacchi * license, and in no event shall the patent license extend to any additions
34*35786f68SRobert Mustacchi * to or modifications of the Original Intel Code. No other license or right
35*35786f68SRobert Mustacchi * is granted directly or by implication, estoppel or otherwise;
36*35786f68SRobert Mustacchi *
37*35786f68SRobert Mustacchi * The above copyright and patent license is granted only if the following
38*35786f68SRobert Mustacchi * conditions are met:
39*35786f68SRobert Mustacchi *
40*35786f68SRobert Mustacchi * 3. Conditions
41*35786f68SRobert Mustacchi *
42*35786f68SRobert Mustacchi * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43*35786f68SRobert Mustacchi * Redistribution of source code of any substantial portion of the Covered
44*35786f68SRobert Mustacchi * Code or modification with rights to further distribute source must include
45*35786f68SRobert Mustacchi * the above Copyright Notice, the above License, this list of Conditions,
46*35786f68SRobert Mustacchi * and the following Disclaimer and Export Compliance provision. In addition,
47*35786f68SRobert Mustacchi * Licensee must cause all Covered Code to which Licensee contributes to
48*35786f68SRobert Mustacchi * contain a file documenting the changes Licensee made to create that Covered
49*35786f68SRobert Mustacchi * Code and the date of any change. Licensee must include in that file the
50*35786f68SRobert Mustacchi * documentation of any changes made by any predecessor Licensee. Licensee
51*35786f68SRobert Mustacchi * must include a prominent statement that the modification is derived,
52*35786f68SRobert Mustacchi * directly or indirectly, from Original Intel Code.
53*35786f68SRobert Mustacchi *
54*35786f68SRobert Mustacchi * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55*35786f68SRobert Mustacchi * Redistribution of source code of any substantial portion of the Covered
56*35786f68SRobert Mustacchi * Code or modification without rights to further distribute source must
57*35786f68SRobert Mustacchi * include the following Disclaimer and Export Compliance provision in the
58*35786f68SRobert Mustacchi * documentation and/or other materials provided with distribution. In
59*35786f68SRobert Mustacchi * addition, Licensee may not authorize further sublicense of source of any
60*35786f68SRobert Mustacchi * portion of the Covered Code, and must include terms to the effect that the
61*35786f68SRobert Mustacchi * license from Licensee to its licensee is limited to the intellectual
62*35786f68SRobert Mustacchi * property embodied in the software Licensee provides to its licensee, and
63*35786f68SRobert Mustacchi * not to intellectual property embodied in modifications its licensee may
64*35786f68SRobert Mustacchi * make.
65*35786f68SRobert Mustacchi *
66*35786f68SRobert Mustacchi * 3.3. Redistribution of Executable. Redistribution in executable form of any
67*35786f68SRobert Mustacchi * substantial portion of the Covered Code or modification must reproduce the
68*35786f68SRobert Mustacchi * above Copyright Notice, and the following Disclaimer and Export Compliance
69*35786f68SRobert Mustacchi * provision in the documentation and/or other materials provided with the
70*35786f68SRobert Mustacchi * distribution.
71*35786f68SRobert Mustacchi *
72*35786f68SRobert Mustacchi * 3.4. Intel retains all right, title, and interest in and to the Original
73*35786f68SRobert Mustacchi * Intel Code.
74*35786f68SRobert Mustacchi *
75*35786f68SRobert Mustacchi * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76*35786f68SRobert Mustacchi * Intel shall be used in advertising or otherwise to promote the sale, use or
77*35786f68SRobert Mustacchi * other dealings in products derived from or relating to the Covered Code
78*35786f68SRobert Mustacchi * without prior written authorization from Intel.
79*35786f68SRobert Mustacchi *
80*35786f68SRobert Mustacchi * 4. Disclaimer and Export Compliance
81*35786f68SRobert Mustacchi *
82*35786f68SRobert Mustacchi * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83*35786f68SRobert Mustacchi * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84*35786f68SRobert Mustacchi * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85*35786f68SRobert Mustacchi * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86*35786f68SRobert Mustacchi * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87*35786f68SRobert Mustacchi * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88*35786f68SRobert Mustacchi * PARTICULAR PURPOSE.
89*35786f68SRobert Mustacchi *
90*35786f68SRobert Mustacchi * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91*35786f68SRobert Mustacchi * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92*35786f68SRobert Mustacchi * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93*35786f68SRobert Mustacchi * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94*35786f68SRobert Mustacchi * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95*35786f68SRobert Mustacchi * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96*35786f68SRobert Mustacchi * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97*35786f68SRobert Mustacchi * LIMITED REMEDY.
98*35786f68SRobert Mustacchi *
99*35786f68SRobert Mustacchi * 4.3. Licensee shall not export, either directly or indirectly, any of this
100*35786f68SRobert Mustacchi * software or system incorporating such software without first obtaining any
101*35786f68SRobert Mustacchi * required license or other approval from the U. S. Department of Commerce or
102*35786f68SRobert Mustacchi * any other agency or department of the United States Government. In the
103*35786f68SRobert Mustacchi * event Licensee exports any such software from the United States or
104*35786f68SRobert Mustacchi * re-exports any such software from a foreign destination, Licensee shall
105*35786f68SRobert Mustacchi * ensure that the distribution and export/re-export of the software is in
106*35786f68SRobert Mustacchi * compliance with all laws, regulations, orders, or other restrictions of the
107*35786f68SRobert Mustacchi * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108*35786f68SRobert Mustacchi * any of its subsidiaries will export/re-export any technical data, process,
109*35786f68SRobert Mustacchi * software, or service, directly or indirectly, to any country for which the
110*35786f68SRobert Mustacchi * United States government or any agency thereof requires an export license,
111*35786f68SRobert Mustacchi * other governmental approval, or letter of assurance, without first obtaining
112*35786f68SRobert Mustacchi * such license, approval or letter.
113*35786f68SRobert Mustacchi *
114*35786f68SRobert Mustacchi *****************************************************************************
115*35786f68SRobert Mustacchi *
116*35786f68SRobert Mustacchi * Alternatively, you may choose to be licensed under the terms of the
117*35786f68SRobert Mustacchi * following license:
118*35786f68SRobert Mustacchi *
119bc36eafdSMike Gerdts * Redistribution and use in source and binary forms, with or without
120bc36eafdSMike Gerdts * modification, are permitted provided that the following conditions
121bc36eafdSMike Gerdts * are met:
122bc36eafdSMike Gerdts * 1. Redistributions of source code must retain the above copyright
123bc36eafdSMike Gerdts * notice, this list of conditions, and the following disclaimer,
124bc36eafdSMike Gerdts * without modification.
125bc36eafdSMike Gerdts * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126bc36eafdSMike Gerdts * substantially similar to the "NO WARRANTY" disclaimer below
127bc36eafdSMike Gerdts * ("Disclaimer") and any redistribution must be conditioned upon
128bc36eafdSMike Gerdts * including a substantially similar Disclaimer requirement for further
129bc36eafdSMike Gerdts * binary redistribution.
130bc36eafdSMike Gerdts * 3. Neither the names of the above-listed copyright holders nor the names
131bc36eafdSMike Gerdts * of any contributors may be used to endorse or promote products derived
132bc36eafdSMike Gerdts * from this software without specific prior written permission.
133bc36eafdSMike Gerdts *
134*35786f68SRobert Mustacchi * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135*35786f68SRobert Mustacchi * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136*35786f68SRobert Mustacchi * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137*35786f68SRobert Mustacchi * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138*35786f68SRobert Mustacchi * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139*35786f68SRobert Mustacchi * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140*35786f68SRobert Mustacchi * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141*35786f68SRobert Mustacchi * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142*35786f68SRobert Mustacchi * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143*35786f68SRobert Mustacchi * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144*35786f68SRobert Mustacchi * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145*35786f68SRobert Mustacchi *
146*35786f68SRobert Mustacchi * Alternatively, you may choose to be licensed under the terms of the
147bc36eafdSMike Gerdts * GNU General Public License ("GPL") version 2 as published by the Free
148bc36eafdSMike Gerdts * Software Foundation.
149bc36eafdSMike Gerdts *
150*35786f68SRobert Mustacchi *****************************************************************************/
151bc36eafdSMike Gerdts
152bc36eafdSMike Gerdts #define EXPORT_ACPI_INTERFACES
153bc36eafdSMike Gerdts
154bc36eafdSMike Gerdts #include "acpi.h"
155bc36eafdSMike Gerdts #include "accommon.h"
156bc36eafdSMike Gerdts #include "acnamesp.h"
157bc36eafdSMike Gerdts #include "acevents.h"
158bc36eafdSMike Gerdts #include "acinterp.h"
159bc36eafdSMike Gerdts
160bc36eafdSMike Gerdts #define _COMPONENT ACPI_EVENTS
161bc36eafdSMike Gerdts ACPI_MODULE_NAME ("evxface")
162bc36eafdSMike Gerdts
163bc36eafdSMike Gerdts #if (!ACPI_REDUCED_HARDWARE)
164bc36eafdSMike Gerdts
165bc36eafdSMike Gerdts /* Local prototypes */
166bc36eafdSMike Gerdts
167bc36eafdSMike Gerdts static ACPI_STATUS
168bc36eafdSMike Gerdts AcpiEvInstallGpeHandler (
169bc36eafdSMike Gerdts ACPI_HANDLE GpeDevice,
170bc36eafdSMike Gerdts UINT32 GpeNumber,
171bc36eafdSMike Gerdts UINT32 Type,
172bc36eafdSMike Gerdts BOOLEAN IsRawHandler,
173bc36eafdSMike Gerdts ACPI_GPE_HANDLER Address,
174bc36eafdSMike Gerdts void *Context);
175bc36eafdSMike Gerdts
176bc36eafdSMike Gerdts #endif
177bc36eafdSMike Gerdts
178bc36eafdSMike Gerdts
179bc36eafdSMike Gerdts /*******************************************************************************
180bc36eafdSMike Gerdts *
181bc36eafdSMike Gerdts * FUNCTION: AcpiInstallNotifyHandler
182bc36eafdSMike Gerdts *
183bc36eafdSMike Gerdts * PARAMETERS: Device - The device for which notifies will be handled
184bc36eafdSMike Gerdts * HandlerType - The type of handler:
185bc36eafdSMike Gerdts * ACPI_SYSTEM_NOTIFY: System Handler (00-7F)
186bc36eafdSMike Gerdts * ACPI_DEVICE_NOTIFY: Device Handler (80-FF)
187bc36eafdSMike Gerdts * ACPI_ALL_NOTIFY: Both System and Device
188bc36eafdSMike Gerdts * Handler - Address of the handler
189bc36eafdSMike Gerdts * Context - Value passed to the handler on each GPE
190bc36eafdSMike Gerdts *
191bc36eafdSMike Gerdts * RETURN: Status
192bc36eafdSMike Gerdts *
193bc36eafdSMike Gerdts * DESCRIPTION: Install a handler for notifications on an ACPI Device,
194bc36eafdSMike Gerdts * ThermalZone, or Processor object.
195bc36eafdSMike Gerdts *
196bc36eafdSMike Gerdts * NOTES: The Root namespace object may have only one handler for each
197bc36eafdSMike Gerdts * type of notify (System/Device). Device/Thermal/Processor objects
198bc36eafdSMike Gerdts * may have one device notify handler, and multiple system notify
199bc36eafdSMike Gerdts * handlers.
200bc36eafdSMike Gerdts *
201bc36eafdSMike Gerdts ******************************************************************************/
202bc36eafdSMike Gerdts
203bc36eafdSMike Gerdts ACPI_STATUS
AcpiInstallNotifyHandler(ACPI_HANDLE Device,UINT32 HandlerType,ACPI_NOTIFY_HANDLER Handler,void * Context)204bc36eafdSMike Gerdts AcpiInstallNotifyHandler (
205bc36eafdSMike Gerdts ACPI_HANDLE Device,
206bc36eafdSMike Gerdts UINT32 HandlerType,
207bc36eafdSMike Gerdts ACPI_NOTIFY_HANDLER Handler,
208bc36eafdSMike Gerdts void *Context)
209bc36eafdSMike Gerdts {
210bc36eafdSMike Gerdts ACPI_NAMESPACE_NODE *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Device);
211bc36eafdSMike Gerdts ACPI_OPERAND_OBJECT *ObjDesc;
212bc36eafdSMike Gerdts ACPI_OPERAND_OBJECT *HandlerObj;
213bc36eafdSMike Gerdts ACPI_STATUS Status;
214bc36eafdSMike Gerdts UINT32 i;
215bc36eafdSMike Gerdts
216bc36eafdSMike Gerdts
217bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (AcpiInstallNotifyHandler);
218bc36eafdSMike Gerdts
219bc36eafdSMike Gerdts
220bc36eafdSMike Gerdts /* Parameter validation */
221bc36eafdSMike Gerdts
222bc36eafdSMike Gerdts if ((!Device) || (!Handler) || (!HandlerType) ||
223bc36eafdSMike Gerdts (HandlerType > ACPI_MAX_NOTIFY_HANDLER_TYPE))
224bc36eafdSMike Gerdts {
225bc36eafdSMike Gerdts return_ACPI_STATUS (AE_BAD_PARAMETER);
226bc36eafdSMike Gerdts }
227bc36eafdSMike Gerdts
228bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
229bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
230bc36eafdSMike Gerdts {
231bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
232bc36eafdSMike Gerdts }
233bc36eafdSMike Gerdts
234bc36eafdSMike Gerdts /*
235bc36eafdSMike Gerdts * Root Object:
236bc36eafdSMike Gerdts * Registering a notify handler on the root object indicates that the
237bc36eafdSMike Gerdts * caller wishes to receive notifications for all objects. Note that
238bc36eafdSMike Gerdts * only one global handler can be registered per notify type.
239bc36eafdSMike Gerdts * Ensure that a handler is not already installed.
240bc36eafdSMike Gerdts */
241bc36eafdSMike Gerdts if (Device == ACPI_ROOT_OBJECT)
242bc36eafdSMike Gerdts {
243bc36eafdSMike Gerdts for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
244bc36eafdSMike Gerdts {
245bc36eafdSMike Gerdts if (HandlerType & (i+1))
246bc36eafdSMike Gerdts {
247bc36eafdSMike Gerdts if (AcpiGbl_GlobalNotify[i].Handler)
248bc36eafdSMike Gerdts {
249bc36eafdSMike Gerdts Status = AE_ALREADY_EXISTS;
250bc36eafdSMike Gerdts goto UnlockAndExit;
251bc36eafdSMike Gerdts }
252bc36eafdSMike Gerdts
253bc36eafdSMike Gerdts AcpiGbl_GlobalNotify[i].Handler = Handler;
254bc36eafdSMike Gerdts AcpiGbl_GlobalNotify[i].Context = Context;
255bc36eafdSMike Gerdts }
256bc36eafdSMike Gerdts }
257bc36eafdSMike Gerdts
258bc36eafdSMike Gerdts goto UnlockAndExit; /* Global notify handler installed, all done */
259bc36eafdSMike Gerdts }
260bc36eafdSMike Gerdts
261bc36eafdSMike Gerdts /*
262bc36eafdSMike Gerdts * All Other Objects:
263bc36eafdSMike Gerdts * Caller will only receive notifications specific to the target
264bc36eafdSMike Gerdts * object. Note that only certain object types are allowed to
265bc36eafdSMike Gerdts * receive notifications.
266bc36eafdSMike Gerdts */
267bc36eafdSMike Gerdts
268bc36eafdSMike Gerdts /* Are Notifies allowed on this object? */
269bc36eafdSMike Gerdts
270bc36eafdSMike Gerdts if (!AcpiEvIsNotifyObject (Node))
271bc36eafdSMike Gerdts {
272bc36eafdSMike Gerdts Status = AE_TYPE;
273bc36eafdSMike Gerdts goto UnlockAndExit;
274bc36eafdSMike Gerdts }
275bc36eafdSMike Gerdts
276bc36eafdSMike Gerdts /* Check for an existing internal object, might not exist */
277bc36eafdSMike Gerdts
278bc36eafdSMike Gerdts ObjDesc = AcpiNsGetAttachedObject (Node);
279bc36eafdSMike Gerdts if (!ObjDesc)
280bc36eafdSMike Gerdts {
281bc36eafdSMike Gerdts /* Create a new object */
282bc36eafdSMike Gerdts
283bc36eafdSMike Gerdts ObjDesc = AcpiUtCreateInternalObject (Node->Type);
284bc36eafdSMike Gerdts if (!ObjDesc)
285bc36eafdSMike Gerdts {
286bc36eafdSMike Gerdts Status = AE_NO_MEMORY;
287bc36eafdSMike Gerdts goto UnlockAndExit;
288bc36eafdSMike Gerdts }
289bc36eafdSMike Gerdts
290bc36eafdSMike Gerdts /* Attach new object to the Node, remove local reference */
291bc36eafdSMike Gerdts
292bc36eafdSMike Gerdts Status = AcpiNsAttachObject (Device, ObjDesc, Node->Type);
293bc36eafdSMike Gerdts AcpiUtRemoveReference (ObjDesc);
294bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
295bc36eafdSMike Gerdts {
296bc36eafdSMike Gerdts goto UnlockAndExit;
297bc36eafdSMike Gerdts }
298bc36eafdSMike Gerdts }
299bc36eafdSMike Gerdts
300bc36eafdSMike Gerdts /* Ensure that the handler is not already installed in the lists */
301bc36eafdSMike Gerdts
302bc36eafdSMike Gerdts for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
303bc36eafdSMike Gerdts {
304bc36eafdSMike Gerdts if (HandlerType & (i+1))
305bc36eafdSMike Gerdts {
306bc36eafdSMike Gerdts HandlerObj = ObjDesc->CommonNotify.NotifyList[i];
307bc36eafdSMike Gerdts while (HandlerObj)
308bc36eafdSMike Gerdts {
309bc36eafdSMike Gerdts if (HandlerObj->Notify.Handler == Handler)
310bc36eafdSMike Gerdts {
311bc36eafdSMike Gerdts Status = AE_ALREADY_EXISTS;
312bc36eafdSMike Gerdts goto UnlockAndExit;
313bc36eafdSMike Gerdts }
314bc36eafdSMike Gerdts
315bc36eafdSMike Gerdts HandlerObj = HandlerObj->Notify.Next[i];
316bc36eafdSMike Gerdts }
317bc36eafdSMike Gerdts }
318bc36eafdSMike Gerdts }
319bc36eafdSMike Gerdts
320bc36eafdSMike Gerdts /* Create and populate a new notify handler object */
321bc36eafdSMike Gerdts
322bc36eafdSMike Gerdts HandlerObj = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_NOTIFY);
323bc36eafdSMike Gerdts if (!HandlerObj)
324bc36eafdSMike Gerdts {
325bc36eafdSMike Gerdts Status = AE_NO_MEMORY;
326bc36eafdSMike Gerdts goto UnlockAndExit;
327bc36eafdSMike Gerdts }
328bc36eafdSMike Gerdts
329bc36eafdSMike Gerdts HandlerObj->Notify.Node = Node;
330bc36eafdSMike Gerdts HandlerObj->Notify.HandlerType = HandlerType;
331bc36eafdSMike Gerdts HandlerObj->Notify.Handler = Handler;
332bc36eafdSMike Gerdts HandlerObj->Notify.Context = Context;
333bc36eafdSMike Gerdts
334bc36eafdSMike Gerdts /* Install the handler at the list head(s) */
335bc36eafdSMike Gerdts
336bc36eafdSMike Gerdts for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
337bc36eafdSMike Gerdts {
338bc36eafdSMike Gerdts if (HandlerType & (i+1))
339bc36eafdSMike Gerdts {
340bc36eafdSMike Gerdts HandlerObj->Notify.Next[i] =
341bc36eafdSMike Gerdts ObjDesc->CommonNotify.NotifyList[i];
342bc36eafdSMike Gerdts
343bc36eafdSMike Gerdts ObjDesc->CommonNotify.NotifyList[i] = HandlerObj;
344bc36eafdSMike Gerdts }
345bc36eafdSMike Gerdts }
346bc36eafdSMike Gerdts
347bc36eafdSMike Gerdts /* Add an extra reference if handler was installed in both lists */
348bc36eafdSMike Gerdts
349bc36eafdSMike Gerdts if (HandlerType == ACPI_ALL_NOTIFY)
350bc36eafdSMike Gerdts {
351bc36eafdSMike Gerdts AcpiUtAddReference (HandlerObj);
352bc36eafdSMike Gerdts }
353bc36eafdSMike Gerdts
354bc36eafdSMike Gerdts
355bc36eafdSMike Gerdts UnlockAndExit:
356bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
357bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
358bc36eafdSMike Gerdts }
359bc36eafdSMike Gerdts
ACPI_EXPORT_SYMBOL(AcpiInstallNotifyHandler)360bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiInstallNotifyHandler)
361bc36eafdSMike Gerdts
362bc36eafdSMike Gerdts
363bc36eafdSMike Gerdts /*******************************************************************************
364bc36eafdSMike Gerdts *
365bc36eafdSMike Gerdts * FUNCTION: AcpiRemoveNotifyHandler
366bc36eafdSMike Gerdts *
367bc36eafdSMike Gerdts * PARAMETERS: Device - The device for which the handler is installed
368bc36eafdSMike Gerdts * HandlerType - The type of handler:
369bc36eafdSMike Gerdts * ACPI_SYSTEM_NOTIFY: System Handler (00-7F)
370bc36eafdSMike Gerdts * ACPI_DEVICE_NOTIFY: Device Handler (80-FF)
371bc36eafdSMike Gerdts * ACPI_ALL_NOTIFY: Both System and Device
372bc36eafdSMike Gerdts * Handler - Address of the handler
373bc36eafdSMike Gerdts *
374bc36eafdSMike Gerdts * RETURN: Status
375bc36eafdSMike Gerdts *
376bc36eafdSMike Gerdts * DESCRIPTION: Remove a handler for notifies on an ACPI device
377bc36eafdSMike Gerdts *
378bc36eafdSMike Gerdts ******************************************************************************/
379bc36eafdSMike Gerdts
380bc36eafdSMike Gerdts ACPI_STATUS
381bc36eafdSMike Gerdts AcpiRemoveNotifyHandler (
382bc36eafdSMike Gerdts ACPI_HANDLE Device,
383bc36eafdSMike Gerdts UINT32 HandlerType,
384bc36eafdSMike Gerdts ACPI_NOTIFY_HANDLER Handler)
385bc36eafdSMike Gerdts {
386bc36eafdSMike Gerdts ACPI_NAMESPACE_NODE *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Device);
387bc36eafdSMike Gerdts ACPI_OPERAND_OBJECT *ObjDesc;
388bc36eafdSMike Gerdts ACPI_OPERAND_OBJECT *HandlerObj;
389bc36eafdSMike Gerdts ACPI_OPERAND_OBJECT *PreviousHandlerObj;
390bc36eafdSMike Gerdts ACPI_STATUS Status = AE_OK;
391bc36eafdSMike Gerdts UINT32 i;
392bc36eafdSMike Gerdts
393bc36eafdSMike Gerdts
394bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (AcpiRemoveNotifyHandler);
395bc36eafdSMike Gerdts
396bc36eafdSMike Gerdts
397bc36eafdSMike Gerdts /* Parameter validation */
398bc36eafdSMike Gerdts
399bc36eafdSMike Gerdts if ((!Device) || (!Handler) || (!HandlerType) ||
400bc36eafdSMike Gerdts (HandlerType > ACPI_MAX_NOTIFY_HANDLER_TYPE))
401bc36eafdSMike Gerdts {
402bc36eafdSMike Gerdts return_ACPI_STATUS (AE_BAD_PARAMETER);
403bc36eafdSMike Gerdts }
404bc36eafdSMike Gerdts
405bc36eafdSMike Gerdts /* Root Object. Global handlers are removed here */
406bc36eafdSMike Gerdts
407bc36eafdSMike Gerdts if (Device == ACPI_ROOT_OBJECT)
408bc36eafdSMike Gerdts {
409bc36eafdSMike Gerdts for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
410bc36eafdSMike Gerdts {
411bc36eafdSMike Gerdts if (HandlerType & (i+1))
412bc36eafdSMike Gerdts {
413bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
414bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
415bc36eafdSMike Gerdts {
416bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
417bc36eafdSMike Gerdts }
418bc36eafdSMike Gerdts
419bc36eafdSMike Gerdts if (!AcpiGbl_GlobalNotify[i].Handler ||
420bc36eafdSMike Gerdts (AcpiGbl_GlobalNotify[i].Handler != Handler))
421bc36eafdSMike Gerdts {
422bc36eafdSMike Gerdts Status = AE_NOT_EXIST;
423bc36eafdSMike Gerdts goto UnlockAndExit;
424bc36eafdSMike Gerdts }
425bc36eafdSMike Gerdts
426bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
427bc36eafdSMike Gerdts "Removing global notify handler\n"));
428bc36eafdSMike Gerdts
429bc36eafdSMike Gerdts AcpiGbl_GlobalNotify[i].Handler = NULL;
430bc36eafdSMike Gerdts AcpiGbl_GlobalNotify[i].Context = NULL;
431bc36eafdSMike Gerdts
432bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
433bc36eafdSMike Gerdts
434bc36eafdSMike Gerdts /* Make sure all deferred notify tasks are completed */
435bc36eafdSMike Gerdts
436bc36eafdSMike Gerdts AcpiOsWaitEventsComplete ();
437bc36eafdSMike Gerdts }
438bc36eafdSMike Gerdts }
439bc36eafdSMike Gerdts
440bc36eafdSMike Gerdts return_ACPI_STATUS (AE_OK);
441bc36eafdSMike Gerdts }
442bc36eafdSMike Gerdts
443bc36eafdSMike Gerdts /* All other objects: Are Notifies allowed on this object? */
444bc36eafdSMike Gerdts
445bc36eafdSMike Gerdts if (!AcpiEvIsNotifyObject (Node))
446bc36eafdSMike Gerdts {
447bc36eafdSMike Gerdts return_ACPI_STATUS (AE_TYPE);
448bc36eafdSMike Gerdts }
449bc36eafdSMike Gerdts
450bc36eafdSMike Gerdts /* Must have an existing internal object */
451bc36eafdSMike Gerdts
452bc36eafdSMike Gerdts ObjDesc = AcpiNsGetAttachedObject (Node);
453bc36eafdSMike Gerdts if (!ObjDesc)
454bc36eafdSMike Gerdts {
455bc36eafdSMike Gerdts return_ACPI_STATUS (AE_NOT_EXIST);
456bc36eafdSMike Gerdts }
457bc36eafdSMike Gerdts
458bc36eafdSMike Gerdts /* Internal object exists. Find the handler and remove it */
459bc36eafdSMike Gerdts
460bc36eafdSMike Gerdts for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
461bc36eafdSMike Gerdts {
462bc36eafdSMike Gerdts if (HandlerType & (i+1))
463bc36eafdSMike Gerdts {
464bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
465bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
466bc36eafdSMike Gerdts {
467bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
468bc36eafdSMike Gerdts }
469bc36eafdSMike Gerdts
470bc36eafdSMike Gerdts HandlerObj = ObjDesc->CommonNotify.NotifyList[i];
471bc36eafdSMike Gerdts PreviousHandlerObj = NULL;
472bc36eafdSMike Gerdts
473bc36eafdSMike Gerdts /* Attempt to find the handler in the handler list */
474bc36eafdSMike Gerdts
475bc36eafdSMike Gerdts while (HandlerObj &&
476bc36eafdSMike Gerdts (HandlerObj->Notify.Handler != Handler))
477bc36eafdSMike Gerdts {
478bc36eafdSMike Gerdts PreviousHandlerObj = HandlerObj;
479bc36eafdSMike Gerdts HandlerObj = HandlerObj->Notify.Next[i];
480bc36eafdSMike Gerdts }
481bc36eafdSMike Gerdts
482bc36eafdSMike Gerdts if (!HandlerObj)
483bc36eafdSMike Gerdts {
484bc36eafdSMike Gerdts Status = AE_NOT_EXIST;
485bc36eafdSMike Gerdts goto UnlockAndExit;
486bc36eafdSMike Gerdts }
487bc36eafdSMike Gerdts
488bc36eafdSMike Gerdts /* Remove the handler object from the list */
489bc36eafdSMike Gerdts
490bc36eafdSMike Gerdts if (PreviousHandlerObj) /* Handler is not at the list head */
491bc36eafdSMike Gerdts {
492bc36eafdSMike Gerdts PreviousHandlerObj->Notify.Next[i] =
493bc36eafdSMike Gerdts HandlerObj->Notify.Next[i];
494bc36eafdSMike Gerdts }
495bc36eafdSMike Gerdts else /* Handler is at the list head */
496bc36eafdSMike Gerdts {
497bc36eafdSMike Gerdts ObjDesc->CommonNotify.NotifyList[i] =
498bc36eafdSMike Gerdts HandlerObj->Notify.Next[i];
499bc36eafdSMike Gerdts }
500bc36eafdSMike Gerdts
501bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
502bc36eafdSMike Gerdts
503bc36eafdSMike Gerdts /* Make sure all deferred notify tasks are completed */
504bc36eafdSMike Gerdts
505bc36eafdSMike Gerdts AcpiOsWaitEventsComplete ();
506bc36eafdSMike Gerdts AcpiUtRemoveReference (HandlerObj);
507bc36eafdSMike Gerdts }
508bc36eafdSMike Gerdts }
509bc36eafdSMike Gerdts
510bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
511bc36eafdSMike Gerdts
512bc36eafdSMike Gerdts
513bc36eafdSMike Gerdts UnlockAndExit:
514bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
515bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
516bc36eafdSMike Gerdts }
517bc36eafdSMike Gerdts
ACPI_EXPORT_SYMBOL(AcpiRemoveNotifyHandler)518bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiRemoveNotifyHandler)
519bc36eafdSMike Gerdts
520bc36eafdSMike Gerdts
521bc36eafdSMike Gerdts /*******************************************************************************
522bc36eafdSMike Gerdts *
523bc36eafdSMike Gerdts * FUNCTION: AcpiInstallExceptionHandler
524bc36eafdSMike Gerdts *
525bc36eafdSMike Gerdts * PARAMETERS: Handler - Pointer to the handler function for the
526bc36eafdSMike Gerdts * event
527bc36eafdSMike Gerdts *
528bc36eafdSMike Gerdts * RETURN: Status
529bc36eafdSMike Gerdts *
530bc36eafdSMike Gerdts * DESCRIPTION: Saves the pointer to the handler function
531bc36eafdSMike Gerdts *
532bc36eafdSMike Gerdts ******************************************************************************/
533bc36eafdSMike Gerdts
534bc36eafdSMike Gerdts ACPI_STATUS
535bc36eafdSMike Gerdts AcpiInstallExceptionHandler (
536bc36eafdSMike Gerdts ACPI_EXCEPTION_HANDLER Handler)
537bc36eafdSMike Gerdts {
538bc36eafdSMike Gerdts ACPI_STATUS Status;
539bc36eafdSMike Gerdts
540bc36eafdSMike Gerdts
541bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (AcpiInstallExceptionHandler);
542bc36eafdSMike Gerdts
543bc36eafdSMike Gerdts
544bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
545bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
546bc36eafdSMike Gerdts {
547bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
548bc36eafdSMike Gerdts }
549bc36eafdSMike Gerdts
550bc36eafdSMike Gerdts /* Don't allow two handlers. */
551bc36eafdSMike Gerdts
552bc36eafdSMike Gerdts if (AcpiGbl_ExceptionHandler)
553bc36eafdSMike Gerdts {
554bc36eafdSMike Gerdts Status = AE_ALREADY_EXISTS;
555bc36eafdSMike Gerdts goto Cleanup;
556bc36eafdSMike Gerdts }
557bc36eafdSMike Gerdts
558bc36eafdSMike Gerdts /* Install the handler */
559bc36eafdSMike Gerdts
560bc36eafdSMike Gerdts AcpiGbl_ExceptionHandler = Handler;
561bc36eafdSMike Gerdts
562bc36eafdSMike Gerdts Cleanup:
563bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
564bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
565bc36eafdSMike Gerdts }
566bc36eafdSMike Gerdts
ACPI_EXPORT_SYMBOL(AcpiInstallExceptionHandler)567bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiInstallExceptionHandler)
568bc36eafdSMike Gerdts
569bc36eafdSMike Gerdts
570bc36eafdSMike Gerdts #if (!ACPI_REDUCED_HARDWARE)
571bc36eafdSMike Gerdts /*******************************************************************************
572bc36eafdSMike Gerdts *
573bc36eafdSMike Gerdts * FUNCTION: AcpiInstallSciHandler
574bc36eafdSMike Gerdts *
575bc36eafdSMike Gerdts * PARAMETERS: Address - Address of the handler
576bc36eafdSMike Gerdts * Context - Value passed to the handler on each SCI
577bc36eafdSMike Gerdts *
578bc36eafdSMike Gerdts * RETURN: Status
579bc36eafdSMike Gerdts *
580bc36eafdSMike Gerdts * DESCRIPTION: Install a handler for a System Control Interrupt.
581bc36eafdSMike Gerdts *
582bc36eafdSMike Gerdts ******************************************************************************/
583bc36eafdSMike Gerdts
584bc36eafdSMike Gerdts ACPI_STATUS
585bc36eafdSMike Gerdts AcpiInstallSciHandler (
586bc36eafdSMike Gerdts ACPI_SCI_HANDLER Address,
587bc36eafdSMike Gerdts void *Context)
588bc36eafdSMike Gerdts {
589bc36eafdSMike Gerdts ACPI_SCI_HANDLER_INFO *NewSciHandler;
590bc36eafdSMike Gerdts ACPI_SCI_HANDLER_INFO *SciHandler;
591bc36eafdSMike Gerdts ACPI_CPU_FLAGS Flags;
592bc36eafdSMike Gerdts ACPI_STATUS Status;
593bc36eafdSMike Gerdts
594bc36eafdSMike Gerdts
595bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (AcpiInstallSciHandler);
596bc36eafdSMike Gerdts
597bc36eafdSMike Gerdts
598bc36eafdSMike Gerdts if (!Address)
599bc36eafdSMike Gerdts {
600bc36eafdSMike Gerdts return_ACPI_STATUS (AE_BAD_PARAMETER);
601bc36eafdSMike Gerdts }
602bc36eafdSMike Gerdts
603bc36eafdSMike Gerdts /* Allocate and init a handler object */
604bc36eafdSMike Gerdts
605bc36eafdSMike Gerdts NewSciHandler = ACPI_ALLOCATE (sizeof (ACPI_SCI_HANDLER_INFO));
606bc36eafdSMike Gerdts if (!NewSciHandler)
607bc36eafdSMike Gerdts {
608bc36eafdSMike Gerdts return_ACPI_STATUS (AE_NO_MEMORY);
609bc36eafdSMike Gerdts }
610bc36eafdSMike Gerdts
611bc36eafdSMike Gerdts NewSciHandler->Address = Address;
612bc36eafdSMike Gerdts NewSciHandler->Context = Context;
613bc36eafdSMike Gerdts
614bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
615bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
616bc36eafdSMike Gerdts {
617bc36eafdSMike Gerdts goto Exit;
618bc36eafdSMike Gerdts }
619bc36eafdSMike Gerdts
620bc36eafdSMike Gerdts /* Lock list during installation */
621bc36eafdSMike Gerdts
622bc36eafdSMike Gerdts Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
623bc36eafdSMike Gerdts SciHandler = AcpiGbl_SciHandlerList;
624bc36eafdSMike Gerdts
625bc36eafdSMike Gerdts /* Ensure handler does not already exist */
626bc36eafdSMike Gerdts
627bc36eafdSMike Gerdts while (SciHandler)
628bc36eafdSMike Gerdts {
629bc36eafdSMike Gerdts if (Address == SciHandler->Address)
630bc36eafdSMike Gerdts {
631bc36eafdSMike Gerdts Status = AE_ALREADY_EXISTS;
632bc36eafdSMike Gerdts goto UnlockAndExit;
633bc36eafdSMike Gerdts }
634bc36eafdSMike Gerdts
635bc36eafdSMike Gerdts SciHandler = SciHandler->Next;
636bc36eafdSMike Gerdts }
637bc36eafdSMike Gerdts
638bc36eafdSMike Gerdts /* Install the new handler into the global list (at head) */
639bc36eafdSMike Gerdts
640bc36eafdSMike Gerdts NewSciHandler->Next = AcpiGbl_SciHandlerList;
641bc36eafdSMike Gerdts AcpiGbl_SciHandlerList = NewSciHandler;
642bc36eafdSMike Gerdts
643bc36eafdSMike Gerdts
644bc36eafdSMike Gerdts UnlockAndExit:
645bc36eafdSMike Gerdts
646bc36eafdSMike Gerdts AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
647bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
648bc36eafdSMike Gerdts
649bc36eafdSMike Gerdts Exit:
650bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
651bc36eafdSMike Gerdts {
652bc36eafdSMike Gerdts ACPI_FREE (NewSciHandler);
653bc36eafdSMike Gerdts }
654bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
655bc36eafdSMike Gerdts }
656bc36eafdSMike Gerdts
ACPI_EXPORT_SYMBOL(AcpiInstallSciHandler)657bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiInstallSciHandler)
658bc36eafdSMike Gerdts
659bc36eafdSMike Gerdts
660bc36eafdSMike Gerdts /*******************************************************************************
661bc36eafdSMike Gerdts *
662bc36eafdSMike Gerdts * FUNCTION: AcpiRemoveSciHandler
663bc36eafdSMike Gerdts *
664bc36eafdSMike Gerdts * PARAMETERS: Address - Address of the handler
665bc36eafdSMike Gerdts *
666bc36eafdSMike Gerdts * RETURN: Status
667bc36eafdSMike Gerdts *
668bc36eafdSMike Gerdts * DESCRIPTION: Remove a handler for a System Control Interrupt.
669bc36eafdSMike Gerdts *
670bc36eafdSMike Gerdts ******************************************************************************/
671bc36eafdSMike Gerdts
672bc36eafdSMike Gerdts ACPI_STATUS
673bc36eafdSMike Gerdts AcpiRemoveSciHandler (
674bc36eafdSMike Gerdts ACPI_SCI_HANDLER Address)
675bc36eafdSMike Gerdts {
676bc36eafdSMike Gerdts ACPI_SCI_HANDLER_INFO *PrevSciHandler;
677bc36eafdSMike Gerdts ACPI_SCI_HANDLER_INFO *NextSciHandler;
678bc36eafdSMike Gerdts ACPI_CPU_FLAGS Flags;
679bc36eafdSMike Gerdts ACPI_STATUS Status;
680bc36eafdSMike Gerdts
681bc36eafdSMike Gerdts
682bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (AcpiRemoveSciHandler);
683bc36eafdSMike Gerdts
684bc36eafdSMike Gerdts
685bc36eafdSMike Gerdts if (!Address)
686bc36eafdSMike Gerdts {
687bc36eafdSMike Gerdts return_ACPI_STATUS (AE_BAD_PARAMETER);
688bc36eafdSMike Gerdts }
689bc36eafdSMike Gerdts
690bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
691bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
692bc36eafdSMike Gerdts {
693bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
694bc36eafdSMike Gerdts }
695bc36eafdSMike Gerdts
696bc36eafdSMike Gerdts /* Remove the SCI handler with lock */
697bc36eafdSMike Gerdts
698bc36eafdSMike Gerdts Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
699bc36eafdSMike Gerdts
700bc36eafdSMike Gerdts PrevSciHandler = NULL;
701bc36eafdSMike Gerdts NextSciHandler = AcpiGbl_SciHandlerList;
702bc36eafdSMike Gerdts while (NextSciHandler)
703bc36eafdSMike Gerdts {
704bc36eafdSMike Gerdts if (NextSciHandler->Address == Address)
705bc36eafdSMike Gerdts {
706bc36eafdSMike Gerdts /* Unlink and free the SCI handler info block */
707bc36eafdSMike Gerdts
708bc36eafdSMike Gerdts if (PrevSciHandler)
709bc36eafdSMike Gerdts {
710bc36eafdSMike Gerdts PrevSciHandler->Next = NextSciHandler->Next;
711bc36eafdSMike Gerdts }
712bc36eafdSMike Gerdts else
713bc36eafdSMike Gerdts {
714bc36eafdSMike Gerdts AcpiGbl_SciHandlerList = NextSciHandler->Next;
715bc36eafdSMike Gerdts }
716bc36eafdSMike Gerdts
717bc36eafdSMike Gerdts AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
718bc36eafdSMike Gerdts ACPI_FREE (NextSciHandler);
719bc36eafdSMike Gerdts goto UnlockAndExit;
720bc36eafdSMike Gerdts }
721bc36eafdSMike Gerdts
722bc36eafdSMike Gerdts PrevSciHandler = NextSciHandler;
723bc36eafdSMike Gerdts NextSciHandler = NextSciHandler->Next;
724bc36eafdSMike Gerdts }
725bc36eafdSMike Gerdts
726bc36eafdSMike Gerdts AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
727bc36eafdSMike Gerdts Status = AE_NOT_EXIST;
728bc36eafdSMike Gerdts
729bc36eafdSMike Gerdts
730bc36eafdSMike Gerdts UnlockAndExit:
731bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
732bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
733bc36eafdSMike Gerdts }
734bc36eafdSMike Gerdts
ACPI_EXPORT_SYMBOL(AcpiRemoveSciHandler)735bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiRemoveSciHandler)
736bc36eafdSMike Gerdts
737bc36eafdSMike Gerdts
738bc36eafdSMike Gerdts /*******************************************************************************
739bc36eafdSMike Gerdts *
740bc36eafdSMike Gerdts * FUNCTION: AcpiInstallGlobalEventHandler
741bc36eafdSMike Gerdts *
742bc36eafdSMike Gerdts * PARAMETERS: Handler - Pointer to the global event handler function
743bc36eafdSMike Gerdts * Context - Value passed to the handler on each event
744bc36eafdSMike Gerdts *
745bc36eafdSMike Gerdts * RETURN: Status
746bc36eafdSMike Gerdts *
747bc36eafdSMike Gerdts * DESCRIPTION: Saves the pointer to the handler function. The global handler
748bc36eafdSMike Gerdts * is invoked upon each incoming GPE and Fixed Event. It is
749bc36eafdSMike Gerdts * invoked at interrupt level at the time of the event dispatch.
750bc36eafdSMike Gerdts * Can be used to update event counters, etc.
751bc36eafdSMike Gerdts *
752bc36eafdSMike Gerdts ******************************************************************************/
753bc36eafdSMike Gerdts
754bc36eafdSMike Gerdts ACPI_STATUS
755bc36eafdSMike Gerdts AcpiInstallGlobalEventHandler (
756bc36eafdSMike Gerdts ACPI_GBL_EVENT_HANDLER Handler,
757bc36eafdSMike Gerdts void *Context)
758bc36eafdSMike Gerdts {
759bc36eafdSMike Gerdts ACPI_STATUS Status;
760bc36eafdSMike Gerdts
761bc36eafdSMike Gerdts
762bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (AcpiInstallGlobalEventHandler);
763bc36eafdSMike Gerdts
764bc36eafdSMike Gerdts
765bc36eafdSMike Gerdts /* Parameter validation */
766bc36eafdSMike Gerdts
767bc36eafdSMike Gerdts if (!Handler)
768bc36eafdSMike Gerdts {
769bc36eafdSMike Gerdts return_ACPI_STATUS (AE_BAD_PARAMETER);
770bc36eafdSMike Gerdts }
771bc36eafdSMike Gerdts
772bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
773bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
774bc36eafdSMike Gerdts {
775bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
776bc36eafdSMike Gerdts }
777bc36eafdSMike Gerdts
778bc36eafdSMike Gerdts /* Don't allow two handlers. */
779bc36eafdSMike Gerdts
780bc36eafdSMike Gerdts if (AcpiGbl_GlobalEventHandler)
781bc36eafdSMike Gerdts {
782bc36eafdSMike Gerdts Status = AE_ALREADY_EXISTS;
783bc36eafdSMike Gerdts goto Cleanup;
784bc36eafdSMike Gerdts }
785bc36eafdSMike Gerdts
786bc36eafdSMike Gerdts AcpiGbl_GlobalEventHandler = Handler;
787bc36eafdSMike Gerdts AcpiGbl_GlobalEventHandlerContext = Context;
788bc36eafdSMike Gerdts
789bc36eafdSMike Gerdts
790bc36eafdSMike Gerdts Cleanup:
791bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
792bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
793bc36eafdSMike Gerdts }
794bc36eafdSMike Gerdts
ACPI_EXPORT_SYMBOL(AcpiInstallGlobalEventHandler)795bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiInstallGlobalEventHandler)
796bc36eafdSMike Gerdts
797bc36eafdSMike Gerdts
798bc36eafdSMike Gerdts /*******************************************************************************
799bc36eafdSMike Gerdts *
800bc36eafdSMike Gerdts * FUNCTION: AcpiInstallFixedEventHandler
801bc36eafdSMike Gerdts *
802bc36eafdSMike Gerdts * PARAMETERS: Event - Event type to enable.
803bc36eafdSMike Gerdts * Handler - Pointer to the handler function for the
804bc36eafdSMike Gerdts * event
805bc36eafdSMike Gerdts * Context - Value passed to the handler on each GPE
806bc36eafdSMike Gerdts *
807bc36eafdSMike Gerdts * RETURN: Status
808bc36eafdSMike Gerdts *
809bc36eafdSMike Gerdts * DESCRIPTION: Saves the pointer to the handler function and then enables the
810bc36eafdSMike Gerdts * event.
811bc36eafdSMike Gerdts *
812bc36eafdSMike Gerdts ******************************************************************************/
813bc36eafdSMike Gerdts
814bc36eafdSMike Gerdts ACPI_STATUS
815bc36eafdSMike Gerdts AcpiInstallFixedEventHandler (
816bc36eafdSMike Gerdts UINT32 Event,
817bc36eafdSMike Gerdts ACPI_EVENT_HANDLER Handler,
818bc36eafdSMike Gerdts void *Context)
819bc36eafdSMike Gerdts {
820bc36eafdSMike Gerdts ACPI_STATUS Status;
821bc36eafdSMike Gerdts
822bc36eafdSMike Gerdts
823bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (AcpiInstallFixedEventHandler);
824bc36eafdSMike Gerdts
825bc36eafdSMike Gerdts
826bc36eafdSMike Gerdts /* Parameter validation */
827bc36eafdSMike Gerdts
828bc36eafdSMike Gerdts if (Event > ACPI_EVENT_MAX)
829bc36eafdSMike Gerdts {
830bc36eafdSMike Gerdts return_ACPI_STATUS (AE_BAD_PARAMETER);
831bc36eafdSMike Gerdts }
832bc36eafdSMike Gerdts
833bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
834bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
835bc36eafdSMike Gerdts {
836bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
837bc36eafdSMike Gerdts }
838bc36eafdSMike Gerdts
839bc36eafdSMike Gerdts /* Do not allow multiple handlers */
840bc36eafdSMike Gerdts
841bc36eafdSMike Gerdts if (AcpiGbl_FixedEventHandlers[Event].Handler)
842bc36eafdSMike Gerdts {
843bc36eafdSMike Gerdts Status = AE_ALREADY_EXISTS;
844bc36eafdSMike Gerdts goto Cleanup;
845bc36eafdSMike Gerdts }
846bc36eafdSMike Gerdts
847bc36eafdSMike Gerdts /* Install the handler before enabling the event */
848bc36eafdSMike Gerdts
849bc36eafdSMike Gerdts AcpiGbl_FixedEventHandlers[Event].Handler = Handler;
850bc36eafdSMike Gerdts AcpiGbl_FixedEventHandlers[Event].Context = Context;
851bc36eafdSMike Gerdts
852bc36eafdSMike Gerdts Status = AcpiEnableEvent (Event, 0);
853bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
854bc36eafdSMike Gerdts {
855bc36eafdSMike Gerdts ACPI_WARNING ((AE_INFO,
856bc36eafdSMike Gerdts "Could not enable fixed event - %s (%u)",
857bc36eafdSMike Gerdts AcpiUtGetEventName (Event), Event));
858bc36eafdSMike Gerdts
859bc36eafdSMike Gerdts /* Remove the handler */
860bc36eafdSMike Gerdts
861bc36eafdSMike Gerdts AcpiGbl_FixedEventHandlers[Event].Handler = NULL;
862bc36eafdSMike Gerdts AcpiGbl_FixedEventHandlers[Event].Context = NULL;
863bc36eafdSMike Gerdts }
864bc36eafdSMike Gerdts else
865bc36eafdSMike Gerdts {
866bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
867bc36eafdSMike Gerdts "Enabled fixed event %s (%X), Handler=%p\n",
868bc36eafdSMike Gerdts AcpiUtGetEventName (Event), Event, Handler));
869bc36eafdSMike Gerdts }
870bc36eafdSMike Gerdts
871bc36eafdSMike Gerdts
872bc36eafdSMike Gerdts Cleanup:
873bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
874bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
875bc36eafdSMike Gerdts }
876bc36eafdSMike Gerdts
ACPI_EXPORT_SYMBOL(AcpiInstallFixedEventHandler)877bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiInstallFixedEventHandler)
878bc36eafdSMike Gerdts
879bc36eafdSMike Gerdts
880bc36eafdSMike Gerdts /*******************************************************************************
881bc36eafdSMike Gerdts *
882bc36eafdSMike Gerdts * FUNCTION: AcpiRemoveFixedEventHandler
883bc36eafdSMike Gerdts *
884bc36eafdSMike Gerdts * PARAMETERS: Event - Event type to disable.
885bc36eafdSMike Gerdts * Handler - Address of the handler
886bc36eafdSMike Gerdts *
887bc36eafdSMike Gerdts * RETURN: Status
888bc36eafdSMike Gerdts *
889bc36eafdSMike Gerdts * DESCRIPTION: Disables the event and unregisters the event handler.
890bc36eafdSMike Gerdts *
891bc36eafdSMike Gerdts ******************************************************************************/
892bc36eafdSMike Gerdts
893bc36eafdSMike Gerdts ACPI_STATUS
894bc36eafdSMike Gerdts AcpiRemoveFixedEventHandler (
895bc36eafdSMike Gerdts UINT32 Event,
896bc36eafdSMike Gerdts ACPI_EVENT_HANDLER Handler)
897bc36eafdSMike Gerdts {
898bc36eafdSMike Gerdts ACPI_STATUS Status = AE_OK;
899bc36eafdSMike Gerdts
900bc36eafdSMike Gerdts
901bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (AcpiRemoveFixedEventHandler);
902bc36eafdSMike Gerdts
903bc36eafdSMike Gerdts
904bc36eafdSMike Gerdts /* Parameter validation */
905bc36eafdSMike Gerdts
906bc36eafdSMike Gerdts if (Event > ACPI_EVENT_MAX)
907bc36eafdSMike Gerdts {
908bc36eafdSMike Gerdts return_ACPI_STATUS (AE_BAD_PARAMETER);
909bc36eafdSMike Gerdts }
910bc36eafdSMike Gerdts
911bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
912bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
913bc36eafdSMike Gerdts {
914bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
915bc36eafdSMike Gerdts }
916bc36eafdSMike Gerdts
917bc36eafdSMike Gerdts /* Disable the event before removing the handler */
918bc36eafdSMike Gerdts
919bc36eafdSMike Gerdts Status = AcpiDisableEvent (Event, 0);
920bc36eafdSMike Gerdts
921bc36eafdSMike Gerdts /* Always Remove the handler */
922bc36eafdSMike Gerdts
923bc36eafdSMike Gerdts AcpiGbl_FixedEventHandlers[Event].Handler = NULL;
924bc36eafdSMike Gerdts AcpiGbl_FixedEventHandlers[Event].Context = NULL;
925bc36eafdSMike Gerdts
926bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
927bc36eafdSMike Gerdts {
928bc36eafdSMike Gerdts ACPI_WARNING ((AE_INFO,
929bc36eafdSMike Gerdts "Could not disable fixed event - %s (%u)",
930bc36eafdSMike Gerdts AcpiUtGetEventName (Event), Event));
931bc36eafdSMike Gerdts }
932bc36eafdSMike Gerdts else
933bc36eafdSMike Gerdts {
934bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
935bc36eafdSMike Gerdts "Disabled fixed event - %s (%X)\n",
936bc36eafdSMike Gerdts AcpiUtGetEventName (Event), Event));
937bc36eafdSMike Gerdts }
938bc36eafdSMike Gerdts
939bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
940bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
941bc36eafdSMike Gerdts }
942bc36eafdSMike Gerdts
ACPI_EXPORT_SYMBOL(AcpiRemoveFixedEventHandler)943bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiRemoveFixedEventHandler)
944bc36eafdSMike Gerdts
945bc36eafdSMike Gerdts
946bc36eafdSMike Gerdts /*******************************************************************************
947bc36eafdSMike Gerdts *
948bc36eafdSMike Gerdts * FUNCTION: AcpiEvInstallGpeHandler
949bc36eafdSMike Gerdts *
950bc36eafdSMike Gerdts * PARAMETERS: GpeDevice - Namespace node for the GPE (NULL for FADT
951bc36eafdSMike Gerdts * defined GPEs)
952bc36eafdSMike Gerdts * GpeNumber - The GPE number within the GPE block
953bc36eafdSMike Gerdts * Type - Whether this GPE should be treated as an
954bc36eafdSMike Gerdts * edge- or level-triggered interrupt.
955bc36eafdSMike Gerdts * IsRawHandler - Whether this GPE should be handled using
956bc36eafdSMike Gerdts * the special GPE handler mode.
957bc36eafdSMike Gerdts * Address - Address of the handler
958bc36eafdSMike Gerdts * Context - Value passed to the handler on each GPE
959bc36eafdSMike Gerdts *
960bc36eafdSMike Gerdts * RETURN: Status
961bc36eafdSMike Gerdts *
962bc36eafdSMike Gerdts * DESCRIPTION: Internal function to install a handler for a General Purpose
963bc36eafdSMike Gerdts * Event.
964bc36eafdSMike Gerdts *
965bc36eafdSMike Gerdts ******************************************************************************/
966bc36eafdSMike Gerdts
967bc36eafdSMike Gerdts static ACPI_STATUS
968bc36eafdSMike Gerdts AcpiEvInstallGpeHandler (
969bc36eafdSMike Gerdts ACPI_HANDLE GpeDevice,
970bc36eafdSMike Gerdts UINT32 GpeNumber,
971bc36eafdSMike Gerdts UINT32 Type,
972bc36eafdSMike Gerdts BOOLEAN IsRawHandler,
973bc36eafdSMike Gerdts ACPI_GPE_HANDLER Address,
974bc36eafdSMike Gerdts void *Context)
975bc36eafdSMike Gerdts {
976bc36eafdSMike Gerdts ACPI_GPE_EVENT_INFO *GpeEventInfo;
977bc36eafdSMike Gerdts ACPI_GPE_HANDLER_INFO *Handler;
978bc36eafdSMike Gerdts ACPI_STATUS Status;
979bc36eafdSMike Gerdts ACPI_CPU_FLAGS Flags;
980bc36eafdSMike Gerdts
981bc36eafdSMike Gerdts
982bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (EvInstallGpeHandler);
983bc36eafdSMike Gerdts
984bc36eafdSMike Gerdts
985bc36eafdSMike Gerdts /* Parameter validation */
986bc36eafdSMike Gerdts
987bc36eafdSMike Gerdts if ((!Address) || (Type & ~ACPI_GPE_XRUPT_TYPE_MASK))
988bc36eafdSMike Gerdts {
989bc36eafdSMike Gerdts return_ACPI_STATUS (AE_BAD_PARAMETER);
990bc36eafdSMike Gerdts }
991bc36eafdSMike Gerdts
992bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
993bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
994bc36eafdSMike Gerdts {
995bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
996bc36eafdSMike Gerdts }
997bc36eafdSMike Gerdts
998bc36eafdSMike Gerdts /* Allocate and init handler object (before lock) */
999bc36eafdSMike Gerdts
1000bc36eafdSMike Gerdts Handler = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_HANDLER_INFO));
1001bc36eafdSMike Gerdts if (!Handler)
1002bc36eafdSMike Gerdts {
1003bc36eafdSMike Gerdts Status = AE_NO_MEMORY;
1004bc36eafdSMike Gerdts goto UnlockAndExit;
1005bc36eafdSMike Gerdts }
1006bc36eafdSMike Gerdts
1007bc36eafdSMike Gerdts Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
1008bc36eafdSMike Gerdts
1009bc36eafdSMike Gerdts /* Ensure that we have a valid GPE number */
1010bc36eafdSMike Gerdts
1011bc36eafdSMike Gerdts GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
1012bc36eafdSMike Gerdts if (!GpeEventInfo)
1013bc36eafdSMike Gerdts {
1014bc36eafdSMike Gerdts Status = AE_BAD_PARAMETER;
1015bc36eafdSMike Gerdts goto FreeAndExit;
1016bc36eafdSMike Gerdts }
1017bc36eafdSMike Gerdts
1018bc36eafdSMike Gerdts /* Make sure that there isn't a handler there already */
1019bc36eafdSMike Gerdts
1020bc36eafdSMike Gerdts if ((ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) ==
1021bc36eafdSMike Gerdts ACPI_GPE_DISPATCH_HANDLER) ||
1022bc36eafdSMike Gerdts (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) ==
1023bc36eafdSMike Gerdts ACPI_GPE_DISPATCH_RAW_HANDLER))
1024bc36eafdSMike Gerdts {
1025bc36eafdSMike Gerdts Status = AE_ALREADY_EXISTS;
1026bc36eafdSMike Gerdts goto FreeAndExit;
1027bc36eafdSMike Gerdts }
1028bc36eafdSMike Gerdts
1029bc36eafdSMike Gerdts Handler->Address = Address;
1030bc36eafdSMike Gerdts Handler->Context = Context;
1031bc36eafdSMike Gerdts Handler->MethodNode = GpeEventInfo->Dispatch.MethodNode;
1032bc36eafdSMike Gerdts Handler->OriginalFlags = (UINT8) (GpeEventInfo->Flags &
1033bc36eafdSMike Gerdts (ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK));
1034bc36eafdSMike Gerdts
1035bc36eafdSMike Gerdts /*
1036bc36eafdSMike Gerdts * If the GPE is associated with a method, it may have been enabled
1037bc36eafdSMike Gerdts * automatically during initialization, in which case it has to be
1038bc36eafdSMike Gerdts * disabled now to avoid spurious execution of the handler.
1039bc36eafdSMike Gerdts */
1040bc36eafdSMike Gerdts if (((ACPI_GPE_DISPATCH_TYPE (Handler->OriginalFlags) ==
1041bc36eafdSMike Gerdts ACPI_GPE_DISPATCH_METHOD) ||
1042bc36eafdSMike Gerdts (ACPI_GPE_DISPATCH_TYPE (Handler->OriginalFlags) ==
1043bc36eafdSMike Gerdts ACPI_GPE_DISPATCH_NOTIFY)) &&
1044bc36eafdSMike Gerdts GpeEventInfo->RuntimeCount)
1045bc36eafdSMike Gerdts {
1046bc36eafdSMike Gerdts Handler->OriginallyEnabled = TRUE;
1047bc36eafdSMike Gerdts (void) AcpiEvRemoveGpeReference (GpeEventInfo);
1048bc36eafdSMike Gerdts
1049bc36eafdSMike Gerdts /* Sanity check of original type against new type */
1050bc36eafdSMike Gerdts
1051bc36eafdSMike Gerdts if (Type != (UINT32) (GpeEventInfo->Flags & ACPI_GPE_XRUPT_TYPE_MASK))
1052bc36eafdSMike Gerdts {
1053bc36eafdSMike Gerdts ACPI_WARNING ((AE_INFO, "GPE type mismatch (level/edge)"));
1054bc36eafdSMike Gerdts }
1055bc36eafdSMike Gerdts }
1056bc36eafdSMike Gerdts
1057bc36eafdSMike Gerdts /* Install the handler */
1058bc36eafdSMike Gerdts
1059bc36eafdSMike Gerdts GpeEventInfo->Dispatch.Handler = Handler;
1060bc36eafdSMike Gerdts
1061bc36eafdSMike Gerdts /* Setup up dispatch flags to indicate handler (vs. method/notify) */
1062bc36eafdSMike Gerdts
1063bc36eafdSMike Gerdts GpeEventInfo->Flags &= ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
1064bc36eafdSMike Gerdts GpeEventInfo->Flags |= (UINT8) (Type | (IsRawHandler ?
1065bc36eafdSMike Gerdts ACPI_GPE_DISPATCH_RAW_HANDLER : ACPI_GPE_DISPATCH_HANDLER));
1066bc36eafdSMike Gerdts
1067bc36eafdSMike Gerdts AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
1068bc36eafdSMike Gerdts
1069bc36eafdSMike Gerdts
1070bc36eafdSMike Gerdts UnlockAndExit:
1071bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
1072bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
1073bc36eafdSMike Gerdts
1074bc36eafdSMike Gerdts FreeAndExit:
1075bc36eafdSMike Gerdts AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
1076bc36eafdSMike Gerdts ACPI_FREE (Handler);
1077bc36eafdSMike Gerdts goto UnlockAndExit;
1078bc36eafdSMike Gerdts }
1079bc36eafdSMike Gerdts
1080bc36eafdSMike Gerdts
1081bc36eafdSMike Gerdts /*******************************************************************************
1082bc36eafdSMike Gerdts *
1083bc36eafdSMike Gerdts * FUNCTION: AcpiInstallGpeHandler
1084bc36eafdSMike Gerdts *
1085bc36eafdSMike Gerdts * PARAMETERS: GpeDevice - Namespace node for the GPE (NULL for FADT
1086bc36eafdSMike Gerdts * defined GPEs)
1087bc36eafdSMike Gerdts * GpeNumber - The GPE number within the GPE block
1088bc36eafdSMike Gerdts * Type - Whether this GPE should be treated as an
1089bc36eafdSMike Gerdts * edge- or level-triggered interrupt.
1090bc36eafdSMike Gerdts * Address - Address of the handler
1091bc36eafdSMike Gerdts * Context - Value passed to the handler on each GPE
1092bc36eafdSMike Gerdts *
1093bc36eafdSMike Gerdts * RETURN: Status
1094bc36eafdSMike Gerdts *
1095bc36eafdSMike Gerdts * DESCRIPTION: Install a handler for a General Purpose Event.
1096bc36eafdSMike Gerdts *
1097bc36eafdSMike Gerdts ******************************************************************************/
1098bc36eafdSMike Gerdts
1099bc36eafdSMike Gerdts ACPI_STATUS
AcpiInstallGpeHandler(ACPI_HANDLE GpeDevice,UINT32 GpeNumber,UINT32 Type,ACPI_GPE_HANDLER Address,void * Context)1100bc36eafdSMike Gerdts AcpiInstallGpeHandler (
1101bc36eafdSMike Gerdts ACPI_HANDLE GpeDevice,
1102bc36eafdSMike Gerdts UINT32 GpeNumber,
1103bc36eafdSMike Gerdts UINT32 Type,
1104bc36eafdSMike Gerdts ACPI_GPE_HANDLER Address,
1105bc36eafdSMike Gerdts void *Context)
1106bc36eafdSMike Gerdts {
1107bc36eafdSMike Gerdts ACPI_STATUS Status;
1108bc36eafdSMike Gerdts
1109bc36eafdSMike Gerdts
1110bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (AcpiInstallGpeHandler);
1111bc36eafdSMike Gerdts
1112bc36eafdSMike Gerdts
1113bc36eafdSMike Gerdts Status = AcpiEvInstallGpeHandler (GpeDevice, GpeNumber, Type,
1114bc36eafdSMike Gerdts FALSE, Address, Context);
1115bc36eafdSMike Gerdts
1116bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
1117bc36eafdSMike Gerdts }
1118bc36eafdSMike Gerdts
ACPI_EXPORT_SYMBOL(AcpiInstallGpeHandler)1119bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiInstallGpeHandler)
1120bc36eafdSMike Gerdts
1121bc36eafdSMike Gerdts
1122bc36eafdSMike Gerdts /*******************************************************************************
1123bc36eafdSMike Gerdts *
1124bc36eafdSMike Gerdts * FUNCTION: AcpiInstallGpeRawHandler
1125bc36eafdSMike Gerdts *
1126bc36eafdSMike Gerdts * PARAMETERS: GpeDevice - Namespace node for the GPE (NULL for FADT
1127bc36eafdSMike Gerdts * defined GPEs)
1128bc36eafdSMike Gerdts * GpeNumber - The GPE number within the GPE block
1129bc36eafdSMike Gerdts * Type - Whether this GPE should be treated as an
1130bc36eafdSMike Gerdts * edge- or level-triggered interrupt.
1131bc36eafdSMike Gerdts * Address - Address of the handler
1132bc36eafdSMike Gerdts * Context - Value passed to the handler on each GPE
1133bc36eafdSMike Gerdts *
1134bc36eafdSMike Gerdts * RETURN: Status
1135bc36eafdSMike Gerdts *
1136bc36eafdSMike Gerdts * DESCRIPTION: Install a handler for a General Purpose Event.
1137bc36eafdSMike Gerdts *
1138bc36eafdSMike Gerdts ******************************************************************************/
1139bc36eafdSMike Gerdts
1140bc36eafdSMike Gerdts ACPI_STATUS
1141bc36eafdSMike Gerdts AcpiInstallGpeRawHandler (
1142bc36eafdSMike Gerdts ACPI_HANDLE GpeDevice,
1143bc36eafdSMike Gerdts UINT32 GpeNumber,
1144bc36eafdSMike Gerdts UINT32 Type,
1145bc36eafdSMike Gerdts ACPI_GPE_HANDLER Address,
1146bc36eafdSMike Gerdts void *Context)
1147bc36eafdSMike Gerdts {
1148bc36eafdSMike Gerdts ACPI_STATUS Status;
1149bc36eafdSMike Gerdts
1150bc36eafdSMike Gerdts
1151bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (AcpiInstallGpeRawHandler);
1152bc36eafdSMike Gerdts
1153bc36eafdSMike Gerdts
1154bc36eafdSMike Gerdts Status = AcpiEvInstallGpeHandler (GpeDevice, GpeNumber, Type,
1155bc36eafdSMike Gerdts TRUE, Address, Context);
1156bc36eafdSMike Gerdts
1157bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
1158bc36eafdSMike Gerdts }
1159bc36eafdSMike Gerdts
ACPI_EXPORT_SYMBOL(AcpiInstallGpeRawHandler)1160bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiInstallGpeRawHandler)
1161bc36eafdSMike Gerdts
1162bc36eafdSMike Gerdts
1163bc36eafdSMike Gerdts /*******************************************************************************
1164bc36eafdSMike Gerdts *
1165bc36eafdSMike Gerdts * FUNCTION: AcpiRemoveGpeHandler
1166bc36eafdSMike Gerdts *
1167bc36eafdSMike Gerdts * PARAMETERS: GpeDevice - Namespace node for the GPE (NULL for FADT
1168bc36eafdSMike Gerdts * defined GPEs)
1169bc36eafdSMike Gerdts * GpeNumber - The event to remove a handler
1170bc36eafdSMike Gerdts * Address - Address of the handler
1171bc36eafdSMike Gerdts *
1172bc36eafdSMike Gerdts * RETURN: Status
1173bc36eafdSMike Gerdts *
1174bc36eafdSMike Gerdts * DESCRIPTION: Remove a handler for a General Purpose AcpiEvent.
1175bc36eafdSMike Gerdts *
1176bc36eafdSMike Gerdts ******************************************************************************/
1177bc36eafdSMike Gerdts
1178bc36eafdSMike Gerdts ACPI_STATUS
1179bc36eafdSMike Gerdts AcpiRemoveGpeHandler (
1180bc36eafdSMike Gerdts ACPI_HANDLE GpeDevice,
1181bc36eafdSMike Gerdts UINT32 GpeNumber,
1182bc36eafdSMike Gerdts ACPI_GPE_HANDLER Address)
1183bc36eafdSMike Gerdts {
1184bc36eafdSMike Gerdts ACPI_GPE_EVENT_INFO *GpeEventInfo;
1185bc36eafdSMike Gerdts ACPI_GPE_HANDLER_INFO *Handler;
1186bc36eafdSMike Gerdts ACPI_STATUS Status;
1187bc36eafdSMike Gerdts ACPI_CPU_FLAGS Flags;
1188bc36eafdSMike Gerdts
1189bc36eafdSMike Gerdts
1190bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (AcpiRemoveGpeHandler);
1191bc36eafdSMike Gerdts
1192bc36eafdSMike Gerdts
1193bc36eafdSMike Gerdts /* Parameter validation */
1194bc36eafdSMike Gerdts
1195bc36eafdSMike Gerdts if (!Address)
1196bc36eafdSMike Gerdts {
1197bc36eafdSMike Gerdts return_ACPI_STATUS (AE_BAD_PARAMETER);
1198bc36eafdSMike Gerdts }
1199bc36eafdSMike Gerdts
1200bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
1201bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
1202bc36eafdSMike Gerdts {
1203bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
1204bc36eafdSMike Gerdts }
1205bc36eafdSMike Gerdts
1206bc36eafdSMike Gerdts Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
1207bc36eafdSMike Gerdts
1208bc36eafdSMike Gerdts /* Ensure that we have a valid GPE number */
1209bc36eafdSMike Gerdts
1210bc36eafdSMike Gerdts GpeEventInfo = AcpiEvGetGpeEventInfo (GpeDevice, GpeNumber);
1211bc36eafdSMike Gerdts if (!GpeEventInfo)
1212bc36eafdSMike Gerdts {
1213bc36eafdSMike Gerdts Status = AE_BAD_PARAMETER;
1214bc36eafdSMike Gerdts goto UnlockAndExit;
1215bc36eafdSMike Gerdts }
1216bc36eafdSMike Gerdts
1217bc36eafdSMike Gerdts /* Make sure that a handler is indeed installed */
1218bc36eafdSMike Gerdts
1219bc36eafdSMike Gerdts if ((ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) !=
1220bc36eafdSMike Gerdts ACPI_GPE_DISPATCH_HANDLER) &&
1221bc36eafdSMike Gerdts (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) !=
1222bc36eafdSMike Gerdts ACPI_GPE_DISPATCH_RAW_HANDLER))
1223bc36eafdSMike Gerdts {
1224bc36eafdSMike Gerdts Status = AE_NOT_EXIST;
1225bc36eafdSMike Gerdts goto UnlockAndExit;
1226bc36eafdSMike Gerdts }
1227bc36eafdSMike Gerdts
1228bc36eafdSMike Gerdts /* Make sure that the installed handler is the same */
1229bc36eafdSMike Gerdts
1230bc36eafdSMike Gerdts if (GpeEventInfo->Dispatch.Handler->Address != Address)
1231bc36eafdSMike Gerdts {
1232bc36eafdSMike Gerdts Status = AE_BAD_PARAMETER;
1233bc36eafdSMike Gerdts goto UnlockAndExit;
1234bc36eafdSMike Gerdts }
1235bc36eafdSMike Gerdts
1236bc36eafdSMike Gerdts /* Remove the handler */
1237bc36eafdSMike Gerdts
1238bc36eafdSMike Gerdts Handler = GpeEventInfo->Dispatch.Handler;
1239bc36eafdSMike Gerdts GpeEventInfo->Dispatch.Handler = NULL;
1240bc36eafdSMike Gerdts
1241bc36eafdSMike Gerdts /* Restore Method node (if any), set dispatch flags */
1242bc36eafdSMike Gerdts
1243bc36eafdSMike Gerdts GpeEventInfo->Dispatch.MethodNode = Handler->MethodNode;
1244bc36eafdSMike Gerdts GpeEventInfo->Flags &=
1245bc36eafdSMike Gerdts ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK);
1246bc36eafdSMike Gerdts GpeEventInfo->Flags |= Handler->OriginalFlags;
1247bc36eafdSMike Gerdts
1248bc36eafdSMike Gerdts /*
1249bc36eafdSMike Gerdts * If the GPE was previously associated with a method and it was
1250bc36eafdSMike Gerdts * enabled, it should be enabled at this point to restore the
1251bc36eafdSMike Gerdts * post-initialization configuration.
1252bc36eafdSMike Gerdts */
1253bc36eafdSMike Gerdts if (((ACPI_GPE_DISPATCH_TYPE (Handler->OriginalFlags) ==
1254bc36eafdSMike Gerdts ACPI_GPE_DISPATCH_METHOD) ||
1255bc36eafdSMike Gerdts (ACPI_GPE_DISPATCH_TYPE (Handler->OriginalFlags) ==
1256bc36eafdSMike Gerdts ACPI_GPE_DISPATCH_NOTIFY)) &&
1257bc36eafdSMike Gerdts Handler->OriginallyEnabled)
1258bc36eafdSMike Gerdts {
1259bc36eafdSMike Gerdts (void) AcpiEvAddGpeReference (GpeEventInfo);
1260*35786f68SRobert Mustacchi if (ACPI_GPE_IS_POLLING_NEEDED (GpeEventInfo))
1261*35786f68SRobert Mustacchi {
1262*35786f68SRobert Mustacchi /* Poll edge triggered GPEs to handle existing events */
1263*35786f68SRobert Mustacchi
1264*35786f68SRobert Mustacchi AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
1265*35786f68SRobert Mustacchi (void) AcpiEvDetectGpe (
1266*35786f68SRobert Mustacchi GpeDevice, GpeEventInfo, GpeNumber);
1267*35786f68SRobert Mustacchi Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
1268*35786f68SRobert Mustacchi }
1269bc36eafdSMike Gerdts }
1270bc36eafdSMike Gerdts
1271bc36eafdSMike Gerdts AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
1272bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
1273bc36eafdSMike Gerdts
1274bc36eafdSMike Gerdts /* Make sure all deferred GPE tasks are completed */
1275bc36eafdSMike Gerdts
1276bc36eafdSMike Gerdts AcpiOsWaitEventsComplete ();
1277bc36eafdSMike Gerdts
1278bc36eafdSMike Gerdts /* Now we can free the handler object */
1279bc36eafdSMike Gerdts
1280bc36eafdSMike Gerdts ACPI_FREE (Handler);
1281bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
1282bc36eafdSMike Gerdts
1283bc36eafdSMike Gerdts UnlockAndExit:
1284bc36eafdSMike Gerdts AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
1285bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
1286bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
1287bc36eafdSMike Gerdts }
1288bc36eafdSMike Gerdts
ACPI_EXPORT_SYMBOL(AcpiRemoveGpeHandler)1289bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiRemoveGpeHandler)
1290bc36eafdSMike Gerdts
1291bc36eafdSMike Gerdts
1292bc36eafdSMike Gerdts /*******************************************************************************
1293bc36eafdSMike Gerdts *
1294bc36eafdSMike Gerdts * FUNCTION: AcpiAcquireGlobalLock
1295bc36eafdSMike Gerdts *
1296bc36eafdSMike Gerdts * PARAMETERS: Timeout - How long the caller is willing to wait
1297bc36eafdSMike Gerdts * Handle - Where the handle to the lock is returned
1298bc36eafdSMike Gerdts * (if acquired)
1299bc36eafdSMike Gerdts *
1300bc36eafdSMike Gerdts * RETURN: Status
1301bc36eafdSMike Gerdts *
1302bc36eafdSMike Gerdts * DESCRIPTION: Acquire the ACPI Global Lock
1303bc36eafdSMike Gerdts *
1304bc36eafdSMike Gerdts * Note: Allows callers with the same thread ID to acquire the global lock
1305bc36eafdSMike Gerdts * multiple times. In other words, externally, the behavior of the global lock
1306bc36eafdSMike Gerdts * is identical to an AML mutex. On the first acquire, a new handle is
1307bc36eafdSMike Gerdts * returned. On any subsequent calls to acquire by the same thread, the same
1308bc36eafdSMike Gerdts * handle is returned.
1309bc36eafdSMike Gerdts *
1310bc36eafdSMike Gerdts ******************************************************************************/
1311bc36eafdSMike Gerdts
1312bc36eafdSMike Gerdts ACPI_STATUS
1313bc36eafdSMike Gerdts AcpiAcquireGlobalLock (
1314bc36eafdSMike Gerdts UINT16 Timeout,
1315bc36eafdSMike Gerdts UINT32 *Handle)
1316bc36eafdSMike Gerdts {
1317bc36eafdSMike Gerdts ACPI_STATUS Status;
1318bc36eafdSMike Gerdts
1319bc36eafdSMike Gerdts
1320bc36eafdSMike Gerdts if (!Handle)
1321bc36eafdSMike Gerdts {
1322bc36eafdSMike Gerdts return (AE_BAD_PARAMETER);
1323bc36eafdSMike Gerdts }
1324bc36eafdSMike Gerdts
1325bc36eafdSMike Gerdts /* Must lock interpreter to prevent race conditions */
1326bc36eafdSMike Gerdts
1327bc36eafdSMike Gerdts AcpiExEnterInterpreter ();
1328bc36eafdSMike Gerdts
1329bc36eafdSMike Gerdts Status = AcpiExAcquireMutexObject (Timeout,
1330bc36eafdSMike Gerdts AcpiGbl_GlobalLockMutex, AcpiOsGetThreadId ());
1331bc36eafdSMike Gerdts
1332bc36eafdSMike Gerdts if (ACPI_SUCCESS (Status))
1333bc36eafdSMike Gerdts {
1334bc36eafdSMike Gerdts /* Return the global lock handle (updated in AcpiEvAcquireGlobalLock) */
1335bc36eafdSMike Gerdts
1336bc36eafdSMike Gerdts *Handle = AcpiGbl_GlobalLockHandle;
1337bc36eafdSMike Gerdts }
1338bc36eafdSMike Gerdts
1339bc36eafdSMike Gerdts AcpiExExitInterpreter ();
1340bc36eafdSMike Gerdts return (Status);
1341bc36eafdSMike Gerdts }
1342bc36eafdSMike Gerdts
ACPI_EXPORT_SYMBOL(AcpiAcquireGlobalLock)1343bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiAcquireGlobalLock)
1344bc36eafdSMike Gerdts
1345bc36eafdSMike Gerdts
1346bc36eafdSMike Gerdts /*******************************************************************************
1347bc36eafdSMike Gerdts *
1348bc36eafdSMike Gerdts * FUNCTION: AcpiReleaseGlobalLock
1349bc36eafdSMike Gerdts *
1350bc36eafdSMike Gerdts * PARAMETERS: Handle - Returned from AcpiAcquireGlobalLock
1351bc36eafdSMike Gerdts *
1352bc36eafdSMike Gerdts * RETURN: Status
1353bc36eafdSMike Gerdts *
1354bc36eafdSMike Gerdts * DESCRIPTION: Release the ACPI Global Lock. The handle must be valid.
1355bc36eafdSMike Gerdts *
1356bc36eafdSMike Gerdts ******************************************************************************/
1357bc36eafdSMike Gerdts
1358bc36eafdSMike Gerdts ACPI_STATUS
1359bc36eafdSMike Gerdts AcpiReleaseGlobalLock (
1360bc36eafdSMike Gerdts UINT32 Handle)
1361bc36eafdSMike Gerdts {
1362bc36eafdSMike Gerdts ACPI_STATUS Status;
1363bc36eafdSMike Gerdts
1364bc36eafdSMike Gerdts
1365bc36eafdSMike Gerdts if (!Handle || (Handle != AcpiGbl_GlobalLockHandle))
1366bc36eafdSMike Gerdts {
1367bc36eafdSMike Gerdts return (AE_NOT_ACQUIRED);
1368bc36eafdSMike Gerdts }
1369bc36eafdSMike Gerdts
1370bc36eafdSMike Gerdts Status = AcpiExReleaseMutexObject (AcpiGbl_GlobalLockMutex);
1371bc36eafdSMike Gerdts return (Status);
1372bc36eafdSMike Gerdts }
1373bc36eafdSMike Gerdts
1374bc36eafdSMike Gerdts ACPI_EXPORT_SYMBOL (AcpiReleaseGlobalLock)
1375bc36eafdSMike Gerdts
1376bc36eafdSMike Gerdts #endif /* !ACPI_REDUCED_HARDWARE */
1377