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1
/******************************************************************************
1
/******************************************************************************
2
 *
2
 *
3
 * Module Name: evmisc - Miscellaneous event manager support functions
3
 * Module Name: evmisc - Miscellaneous event manager support functions
4
 *
4
 *
5
 *****************************************************************************/
5
 *****************************************************************************/
6
 
6
 
7
/******************************************************************************
7
/******************************************************************************
8
 *
8
 *
9
 * 1. Copyright Notice
9
 * 1. Copyright Notice
10
 *
10
 *
11
 * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
11
 * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.
12
 * All rights reserved.
12
 * All rights reserved.
13
 *
13
 *
14
 * 2. License
14
 * 2. License
15
 *
15
 *
16
 * 2.1. This is your license from Intel Corp. under its intellectual property
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
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
18
 * you this software, covering your right to use that party's intellectual
19
 * property rights.
19
 * property rights.
20
 *
20
 *
21
 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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
22
 * copy of the source code appearing in this file ("Covered Code") an
23
 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
23
 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24
 * base code distributed originally by Intel ("Original Intel Code") to copy,
24
 * base code distributed originally by Intel ("Original Intel Code") to copy,
25
 * make derivatives, distribute, use and display any portion of the Covered
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
26
 * Code in any form, with the right to sublicense such rights; and
27
 *
27
 *
28
 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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
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,
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
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
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
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
34
 * to or modifications of the Original Intel Code.  No other license or right
35
 * is granted directly or by implication, estoppel or otherwise;
35
 * is granted directly or by implication, estoppel or otherwise;
36
 *
36
 *
37
 * The above copyright and patent license is granted only if the following
37
 * The above copyright and patent license is granted only if the following
38
 * conditions are met:
38
 * conditions are met:
39
 *
39
 *
40
 * 3. Conditions
40
 * 3. Conditions
41
 *
41
 *
42
 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
42
 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43
 * Redistribution of source code of any substantial portion of the Covered
43
 * Redistribution of source code of any substantial portion of the Covered
44
 * Code or modification with rights to further distribute source must include
44
 * Code or modification with rights to further distribute source must include
45
 * the above Copyright Notice, the above License, this list of Conditions,
45
 * the above Copyright Notice, the above License, this list of Conditions,
46
 * and the following Disclaimer and Export Compliance provision.  In addition,
46
 * and the following Disclaimer and Export Compliance provision.  In addition,
47
 * Licensee must cause all Covered Code to which Licensee contributes to
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
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
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
50
 * documentation of any changes made by any predecessor Licensee.  Licensee
51
 * must include a prominent statement that the modification is derived,
51
 * must include a prominent statement that the modification is derived,
52
 * directly or indirectly, from Original Intel Code.
52
 * directly or indirectly, from Original Intel Code.
53
 *
53
 *
54
 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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
55
 * Redistribution of source code of any substantial portion of the Covered
56
 * Code or modification without rights to further distribute source must
56
 * Code or modification without rights to further distribute source must
57
 * include the following Disclaimer and Export Compliance provision in the
57
 * include the following Disclaimer and Export Compliance provision in the
58
 * documentation and/or other materials provided with distribution.  In
58
 * documentation and/or other materials provided with distribution.  In
59
 * addition, Licensee may not authorize further sublicense of source of any
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
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
61
 * license from Licensee to its licensee is limited to the intellectual
62
 * property embodied in the software Licensee provides to its licensee, and
62
 * property embodied in the software Licensee provides to its licensee, and
63
 * not to intellectual property embodied in modifications its licensee may
63
 * not to intellectual property embodied in modifications its licensee may
64
 * make.
64
 * make.
65
 *
65
 *
66
 * 3.3. Redistribution of Executable. Redistribution in executable form of any
66
 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67
 * substantial portion of the Covered Code or modification must reproduce the
67
 * substantial portion of the Covered Code or modification must reproduce the
68
 * above Copyright Notice, and the following Disclaimer and Export Compliance
68
 * above Copyright Notice, and the following Disclaimer and Export Compliance
69
 * provision in the documentation and/or other materials provided with the
69
 * provision in the documentation and/or other materials provided with the
70
 * distribution.
70
 * distribution.
71
 *
71
 *
72
 * 3.4. Intel retains all right, title, and interest in and to the Original
72
 * 3.4. Intel retains all right, title, and interest in and to the Original
73
 * Intel Code.
73
 * Intel Code.
74
 *
74
 *
75
 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
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
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
77
 * other dealings in products derived from or relating to the Covered Code
78
 * without prior written authorization from Intel.
78
 * without prior written authorization from Intel.
79
 *
79
 *
80
 * 4. Disclaimer and Export Compliance
80
 * 4. Disclaimer and Export Compliance
81
 *
81
 *
82
 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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
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,
84
 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
85
 * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
85
 * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
86
 * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
86
 * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
87
 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
87
 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88
 * PARTICULAR PURPOSE.
88
 * PARTICULAR PURPOSE.
89
 *
89
 *
90
 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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
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,
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
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
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
95
 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
96
 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
96
 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97
 * LIMITED REMEDY.
97
 * LIMITED REMEDY.
98
 *
98
 *
99
 * 4.3. Licensee shall not export, either directly or indirectly, any of this
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
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
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
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
103
 * event Licensee exports any such software from the United States or
104
 * re-exports any such software from a foreign destination, Licensee shall
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
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
106
 * compliance with all laws, regulations, orders, or other restrictions of the
107
 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
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,
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
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,
110
 * United States government or any agency thereof requires an export license,
111
 * other governmental approval, or letter of assurance, without first obtaining
111
 * other governmental approval, or letter of assurance, without first obtaining
112
 * such license, approval or letter.
112
 * such license, approval or letter.
113
 *
113
 *
114
 *****************************************************************************/
114
 *****************************************************************************/
115
 
115
 
116
#include "acpi.h"
116
#include "acpi.h"
117
#include "accommon.h"
117
#include "accommon.h"
118
#include "acevents.h"
118
#include "acevents.h"
119
#include "acnamesp.h"
119
#include "acnamesp.h"
120
#include "acinterp.h"
-
 
121
 
120
 
122
#define _COMPONENT          ACPI_EVENTS
121
#define _COMPONENT          ACPI_EVENTS
123
        ACPI_MODULE_NAME    ("evmisc")
122
        ACPI_MODULE_NAME    ("evmisc")
124
 
123
 
125
 
124
 
126
/* Local prototypes */
125
/* Local prototypes */
127
 
126
 
128
static void ACPI_SYSTEM_XFACE
127
static void ACPI_SYSTEM_XFACE
129
AcpiEvNotifyDispatch (
128
AcpiEvNotifyDispatch (
130
    void                    *Context);
129
    void                    *Context);
131
 
-
 
132
static UINT32
-
 
133
AcpiEvGlobalLockHandler (
-
 
134
    void                    *Context);
-
 
135
 
-
 
136
static ACPI_STATUS
-
 
137
AcpiEvRemoveGlobalLockHandler (
-
 
138
    void);
-
 
139
 
130
 
140
 
131
 
141
/*******************************************************************************
132
/*******************************************************************************
142
 *
133
 *
143
 * FUNCTION:    AcpiEvIsNotifyObject
134
 * FUNCTION:    AcpiEvIsNotifyObject
144
 *
135
 *
145
 * PARAMETERS:  Node            - Node to check
136
 * PARAMETERS:  Node            - Node to check
146
 *
137
 *
147
 * RETURN:      TRUE if notifies allowed on this object
138
 * RETURN:      TRUE if notifies allowed on this object
148
 *
139
 *
149
 * DESCRIPTION: Check type of node for a object that supports notifies.
140
 * DESCRIPTION: Check type of node for a object that supports notifies.
150
 *
141
 *
151
 *              TBD: This could be replaced by a flag bit in the node.
142
 *              TBD: This could be replaced by a flag bit in the node.
152
 *
143
 *
153
 ******************************************************************************/
144
 ******************************************************************************/
154
 
145
 
155
BOOLEAN
146
BOOLEAN
156
AcpiEvIsNotifyObject (
147
AcpiEvIsNotifyObject (
157
    ACPI_NAMESPACE_NODE     *Node)
148
    ACPI_NAMESPACE_NODE     *Node)
158
{
149
{
159
    switch (Node->Type)
150
    switch (Node->Type)
160
    {
151
    {
161
    case ACPI_TYPE_DEVICE:
152
    case ACPI_TYPE_DEVICE:
162
    case ACPI_TYPE_PROCESSOR:
153
    case ACPI_TYPE_PROCESSOR:
163
    case ACPI_TYPE_THERMAL:
154
    case ACPI_TYPE_THERMAL:
164
        /*
155
        /*
165
         * These are the ONLY objects that can receive ACPI notifications
156
         * These are the ONLY objects that can receive ACPI notifications
166
         */
157
         */
167
        return (TRUE);
158
        return (TRUE);
168
 
159
 
169
    default:
160
    default:
170
        return (FALSE);
161
        return (FALSE);
171
    }
162
    }
172
}
163
}
173
 
164
 
174
 
165
 
175
/*******************************************************************************
166
/*******************************************************************************
176
 *
167
 *
177
 * FUNCTION:    AcpiEvQueueNotifyRequest
168
 * FUNCTION:    AcpiEvQueueNotifyRequest
178
 *
169
 *
179
 * PARAMETERS:  Node            - NS node for the notified object
170
 * PARAMETERS:  Node            - NS node for the notified object
180
 *              NotifyValue     - Value from the Notify() request
171
 *              NotifyValue     - Value from the Notify() request
181
 *
172
 *
182
 * RETURN:      Status
173
 * RETURN:      Status
183
 *
174
 *
184
 * DESCRIPTION: Dispatch a device notification event to a previously
175
 * DESCRIPTION: Dispatch a device notification event to a previously
185
 *              installed handler.
176
 *              installed handler.
186
 *
177
 *
187
 ******************************************************************************/
178
 ******************************************************************************/
188
 
179
 
189
ACPI_STATUS
180
ACPI_STATUS
190
AcpiEvQueueNotifyRequest (
181
AcpiEvQueueNotifyRequest (
191
    ACPI_NAMESPACE_NODE     *Node,
182
    ACPI_NAMESPACE_NODE     *Node,
192
    UINT32                  NotifyValue)
183
    UINT32                  NotifyValue)
193
{
184
{
194
    ACPI_OPERAND_OBJECT     *ObjDesc;
185
    ACPI_OPERAND_OBJECT     *ObjDesc;
195
    ACPI_OPERAND_OBJECT     *HandlerObj = NULL;
186
    ACPI_OPERAND_OBJECT     *HandlerObj = NULL;
196
    ACPI_GENERIC_STATE      *NotifyInfo;
187
    ACPI_GENERIC_STATE      *NotifyInfo;
197
    ACPI_STATUS             Status = AE_OK;
188
    ACPI_STATUS             Status = AE_OK;
198
 
189
 
199
 
190
 
200
    ACPI_FUNCTION_NAME (EvQueueNotifyRequest);
191
    ACPI_FUNCTION_NAME (EvQueueNotifyRequest);
201
 
192
 
202
 
193
 
203
    /*
194
    /*
204
     * For value 3 (Ejection Request), some device method may need to be run.
195
     * For value 3 (Ejection Request), some device method may need to be run.
205
     * For value 2 (Device Wake) if _PRW exists, the _PS0 method may need
196
     * For value 2 (Device Wake) if _PRW exists, the _PS0 method may need
206
     *   to be run.
197
     *   to be run.
207
     * For value 0x80 (Status Change) on the power button or sleep button,
198
     * For value 0x80 (Status Change) on the power button or sleep button,
208
     *   initiate soft-off or sleep operation?
199
     *   initiate soft-off or sleep operation?
209
     */
200
     */
210
    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
201
    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
211
        "Dispatching Notify on [%4.4s] Node %p Value 0x%2.2X (%s)\n",
202
        "Dispatching Notify on [%4.4s] Node %p Value 0x%2.2X (%s)\n",
212
        AcpiUtGetNodeName (Node), Node, NotifyValue,
203
        AcpiUtGetNodeName (Node), Node, NotifyValue,
213
        AcpiUtGetNotifyName (NotifyValue)));
204
        AcpiUtGetNotifyName (NotifyValue)));
214
 
205
 
215
    /* Get the notify object attached to the NS Node */
206
    /* Get the notify object attached to the NS Node */
216
 
207
 
217
    ObjDesc = AcpiNsGetAttachedObject (Node);
208
    ObjDesc = AcpiNsGetAttachedObject (Node);
218
    if (ObjDesc)
209
    if (ObjDesc)
219
    {
210
    {
220
        /* We have the notify object, Get the right handler */
211
        /* We have the notify object, Get the right handler */
221
 
212
 
222
        switch (Node->Type)
213
        switch (Node->Type)
223
        {
214
        {
224
        /* Notify allowed only on these types */
215
        /* Notify allowed only on these types */
225
 
216
 
226
        case ACPI_TYPE_DEVICE:
217
        case ACPI_TYPE_DEVICE:
227
        case ACPI_TYPE_THERMAL:
218
        case ACPI_TYPE_THERMAL:
228
        case ACPI_TYPE_PROCESSOR:
219
        case ACPI_TYPE_PROCESSOR:
229
 
220
 
230
            if (NotifyValue <= ACPI_MAX_SYS_NOTIFY)
221
            if (NotifyValue <= ACPI_MAX_SYS_NOTIFY)
231
            {
222
            {
232
                HandlerObj = ObjDesc->CommonNotify.SystemNotify;
223
                HandlerObj = ObjDesc->CommonNotify.SystemNotify;
233
            }
224
            }
234
            else
225
            else
235
            {
226
            {
236
                HandlerObj = ObjDesc->CommonNotify.DeviceNotify;
227
                HandlerObj = ObjDesc->CommonNotify.DeviceNotify;
237
            }
228
            }
238
            break;
229
            break;
239
 
230
 
240
        default:
231
        default:
241
 
232
 
242
            /* All other types are not supported */
233
            /* All other types are not supported */
243
 
234
 
244
            return (AE_TYPE);
235
            return (AE_TYPE);
245
        }
236
        }
246
    }
237
    }
247
 
238
 
248
    /*
239
    /*
249
     * If there is any handler to run, schedule the dispatcher.
240
     * If there is any handler to run, schedule the dispatcher.
250
     * Check for:
241
     * Check for:
251
     * 1) Global system notify handler
242
     * 1) Global system notify handler
252
     * 2) Global device notify handler
243
     * 2) Global device notify handler
253
     * 3) Per-device notify handler
244
     * 3) Per-device notify handler
254
     */
245
     */
255
    if ((AcpiGbl_SystemNotify.Handler &&
246
    if ((AcpiGbl_SystemNotify.Handler &&
256
            (NotifyValue <= ACPI_MAX_SYS_NOTIFY)) ||
247
            (NotifyValue <= ACPI_MAX_SYS_NOTIFY)) ||
257
        (AcpiGbl_DeviceNotify.Handler &&
248
        (AcpiGbl_DeviceNotify.Handler &&
258
            (NotifyValue > ACPI_MAX_SYS_NOTIFY))  ||
249
            (NotifyValue > ACPI_MAX_SYS_NOTIFY))  ||
259
        HandlerObj)
250
        HandlerObj)
260
    {
251
    {
261
        NotifyInfo = AcpiUtCreateGenericState ();
252
        NotifyInfo = AcpiUtCreateGenericState ();
262
        if (!NotifyInfo)
253
        if (!NotifyInfo)
263
        {
254
        {
264
            return (AE_NO_MEMORY);
255
            return (AE_NO_MEMORY);
265
        }
256
        }
266
 
257
 
267
        if (!HandlerObj)
258
        if (!HandlerObj)
268
        {
259
        {
269
            ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
260
            ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
270
                "Executing system notify handler for Notify (%4.4s, %X) "
261
                "Executing system notify handler for Notify (%4.4s, %X) "
271
                "node %p\n",
262
                "node %p\n",
272
                AcpiUtGetNodeName (Node), NotifyValue, Node));
263
                AcpiUtGetNodeName (Node), NotifyValue, Node));
273
        }
264
        }
274
 
265
 
275
        NotifyInfo->Common.DescriptorType = ACPI_DESC_TYPE_STATE_NOTIFY;
266
        NotifyInfo->Common.DescriptorType = ACPI_DESC_TYPE_STATE_NOTIFY;
276
        NotifyInfo->Notify.Node = Node;
267
        NotifyInfo->Notify.Node = Node;
277
        NotifyInfo->Notify.Value = (UINT16) NotifyValue;
268
        NotifyInfo->Notify.Value = (UINT16) NotifyValue;
278
        NotifyInfo->Notify.HandlerObj = HandlerObj;
269
        NotifyInfo->Notify.HandlerObj = HandlerObj;
279
 
270
 
280
        Status = AcpiOsExecute (
271
        Status = AcpiOsExecute (
281
                    OSL_NOTIFY_HANDLER, AcpiEvNotifyDispatch, NotifyInfo);
272
                    OSL_NOTIFY_HANDLER, AcpiEvNotifyDispatch, NotifyInfo);
282
        if (ACPI_FAILURE (Status))
273
        if (ACPI_FAILURE (Status))
283
        {
274
        {
284
            AcpiUtDeleteGenericState (NotifyInfo);
275
            AcpiUtDeleteGenericState (NotifyInfo);
285
        }
276
        }
286
    }
277
    }
287
    else
278
    else
288
    {
279
    {
289
        /* There is no notify handler (per-device or system) for this device */
280
        /* There is no notify handler (per-device or system) for this device */
290
 
281
 
291
        ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
282
        ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
292
            "No notify handler for Notify (%4.4s, %X) node %p\n",
283
            "No notify handler for Notify (%4.4s, %X) node %p\n",
293
            AcpiUtGetNodeName (Node), NotifyValue, Node));
284
            AcpiUtGetNodeName (Node), NotifyValue, Node));
294
    }
285
    }
295
 
286
 
296
    return (Status);
287
    return (Status);
297
}
288
}
298
 
289
 
299
 
290
 
300
/*******************************************************************************
291
/*******************************************************************************
301
 *
292
 *
302
 * FUNCTION:    AcpiEvNotifyDispatch
293
 * FUNCTION:    AcpiEvNotifyDispatch
303
 *
294
 *
304
 * PARAMETERS:  Context         - To be passed to the notify handler
295
 * PARAMETERS:  Context         - To be passed to the notify handler
305
 *
296
 *
306
 * RETURN:      None.
297
 * RETURN:      None.
307
 *
298
 *
308
 * DESCRIPTION: Dispatch a device notification event to a previously
299
 * DESCRIPTION: Dispatch a device notification event to a previously
309
 *              installed handler.
300
 *              installed handler.
310
 *
301
 *
311
 ******************************************************************************/
302
 ******************************************************************************/
312
 
303
 
313
static void ACPI_SYSTEM_XFACE
304
static void ACPI_SYSTEM_XFACE
314
AcpiEvNotifyDispatch (
305
AcpiEvNotifyDispatch (
315
    void                    *Context)
306
    void                    *Context)
316
{
307
{
317
    ACPI_GENERIC_STATE      *NotifyInfo = (ACPI_GENERIC_STATE *) Context;
308
    ACPI_GENERIC_STATE      *NotifyInfo = (ACPI_GENERIC_STATE *) Context;
318
    ACPI_NOTIFY_HANDLER     GlobalHandler = NULL;
309
    ACPI_NOTIFY_HANDLER     GlobalHandler = NULL;
319
    void                    *GlobalContext = NULL;
310
    void                    *GlobalContext = NULL;
320
    ACPI_OPERAND_OBJECT     *HandlerObj;
311
    ACPI_OPERAND_OBJECT     *HandlerObj;
321
 
312
 
322
 
313
 
323
    ACPI_FUNCTION_ENTRY ();
314
    ACPI_FUNCTION_ENTRY ();
324
 
315
 
325
 
316
 
326
    /*
317
    /*
327
     * We will invoke a global notify handler if installed. This is done
318
     * We will invoke a global notify handler if installed. This is done
328
     * _before_ we invoke the per-device handler attached to the device.
319
     * _before_ we invoke the per-device handler attached to the device.
329
     */
320
     */
330
    if (NotifyInfo->Notify.Value <= ACPI_MAX_SYS_NOTIFY)
321
    if (NotifyInfo->Notify.Value <= ACPI_MAX_SYS_NOTIFY)
331
    {
322
    {
332
        /* Global system notification handler */
323
        /* Global system notification handler */
333
 
324
 
334
        if (AcpiGbl_SystemNotify.Handler)
325
        if (AcpiGbl_SystemNotify.Handler)
335
        {
326
        {
336
            GlobalHandler = AcpiGbl_SystemNotify.Handler;
327
            GlobalHandler = AcpiGbl_SystemNotify.Handler;
337
            GlobalContext = AcpiGbl_SystemNotify.Context;
328
            GlobalContext = AcpiGbl_SystemNotify.Context;
338
        }
329
        }
339
    }
330
    }
340
    else
331
    else
341
    {
332
    {
342
        /* Global driver notification handler */
333
        /* Global driver notification handler */
343
 
334
 
344
        if (AcpiGbl_DeviceNotify.Handler)
335
        if (AcpiGbl_DeviceNotify.Handler)
345
        {
336
        {
346
            GlobalHandler = AcpiGbl_DeviceNotify.Handler;
337
            GlobalHandler = AcpiGbl_DeviceNotify.Handler;
347
            GlobalContext = AcpiGbl_DeviceNotify.Context;
338
            GlobalContext = AcpiGbl_DeviceNotify.Context;
348
        }
339
        }
349
    }
340
    }
350
 
341
 
351
    /* Invoke the system handler first, if present */
342
    /* Invoke the system handler first, if present */
352
 
343
 
353
    if (GlobalHandler)
344
    if (GlobalHandler)
354
    {
345
    {
355
        GlobalHandler (NotifyInfo->Notify.Node, NotifyInfo->Notify.Value,
346
        GlobalHandler (NotifyInfo->Notify.Node, NotifyInfo->Notify.Value,
356
            GlobalContext);
347
            GlobalContext);
357
    }
348
    }
358
 
349
 
359
    /* Now invoke the per-device handler, if present */
350
    /* Now invoke the per-device handler, if present */
360
 
351
 
361
    HandlerObj = NotifyInfo->Notify.HandlerObj;
352
    HandlerObj = NotifyInfo->Notify.HandlerObj;
362
    if (HandlerObj)
353
    if (HandlerObj)
363
    {
354
    {
364
        HandlerObj->Notify.Handler (NotifyInfo->Notify.Node,
355
        HandlerObj->Notify.Handler (NotifyInfo->Notify.Node,
365
            NotifyInfo->Notify.Value,
356
            NotifyInfo->Notify.Value,
366
            HandlerObj->Notify.Context);
357
            HandlerObj->Notify.Context);
367
    }
358
    }
368
 
359
 
369
    /* All done with the info object */
360
    /* All done with the info object */
370
 
361
 
371
    AcpiUtDeleteGenericState (NotifyInfo);
362
    AcpiUtDeleteGenericState (NotifyInfo);
372
}
363
}
373
 
364
 
374
 
-
 
375
/*******************************************************************************
-
 
376
 *
-
 
377
 * FUNCTION:    AcpiEvGlobalLockHandler
-
 
378
 *
-
 
379
 * PARAMETERS:  Context         - From thread interface, not used
-
 
380
 *
-
 
381
 * RETURN:      ACPI_INTERRUPT_HANDLED
-
 
382
 *
-
 
383
 * DESCRIPTION: Invoked directly from the SCI handler when a global lock
-
 
384
 *              release interrupt occurs. Attempt to acquire the global lock,
-
 
385
 *              if successful, signal the thread waiting for the lock.
-
 
386
 *
-
 
387
 * NOTE: Assumes that the semaphore can be signaled from interrupt level. If
-
 
388
 * this is not possible for some reason, a separate thread will have to be
-
 
389
 * scheduled to do this.
-
 
390
 *
-
 
391
 ******************************************************************************/
-
 
392
 
-
 
393
static UINT32
-
 
394
AcpiEvGlobalLockHandler (
-
 
395
    void                    *Context)
-
 
396
{
-
 
397
    BOOLEAN                 Acquired = FALSE;
-
 
398
    ACPI_STATUS             Status;
-
 
399
 
-
 
400
 
-
 
401
    /*
-
 
402
     * Attempt to get the lock.
-
 
403
     *
-
 
404
     * If we don't get it now, it will be marked pending and we will
-
 
405
     * take another interrupt when it becomes free.
-
 
406
     */
-
 
407
    ACPI_ACQUIRE_GLOBAL_LOCK (AcpiGbl_FACS, Acquired);
-
 
408
    if (Acquired)
-
 
409
    {
-
 
410
        /* Got the lock, now wake the thread waiting for it */
-
 
411
 
-
 
412
        AcpiGbl_GlobalLockAcquired = TRUE;
-
 
413
 
-
 
414
        /* Send a unit to the semaphore */
-
 
415
 
-
 
416
        Status = AcpiOsSignalSemaphore (AcpiGbl_GlobalLockSemaphore, 1);
-
 
417
        if (ACPI_FAILURE (Status))
-
 
418
        {
-
 
419
            ACPI_ERROR ((AE_INFO, "Could not signal Global Lock semaphore"));
-
 
420
        }
-
 
421
    }
-
 
422
 
-
 
423
    return (ACPI_INTERRUPT_HANDLED);
-
 
424
}
-
 
425
 
-
 
426
 
-
 
427
/*******************************************************************************
-
 
428
 *
-
 
429
 * FUNCTION:    AcpiEvInitGlobalLockHandler
-
 
430
 *
-
 
431
 * PARAMETERS:  None
-
 
432
 *
-
 
433
 * RETURN:      Status
-
 
434
 *
-
 
435
 * DESCRIPTION: Install a handler for the global lock release event
-
 
436
 *
-
 
437
 ******************************************************************************/
-
 
438
 
-
 
439
ACPI_STATUS
-
 
440
AcpiEvInitGlobalLockHandler (
-
 
441
    void)
-
 
442
{
-
 
443
    ACPI_STATUS             Status;
-
 
444
 
-
 
445
 
-
 
446
    ACPI_FUNCTION_TRACE (EvInitGlobalLockHandler);
-
 
447
 
-
 
448
 
-
 
449
    /* Attempt installation of the global lock handler */
-
 
450
 
-
 
451
    Status = AcpiInstallFixedEventHandler (ACPI_EVENT_GLOBAL,
-
 
452
                AcpiEvGlobalLockHandler, NULL);
-
 
453
 
-
 
454
    /*
-
 
455
     * If the global lock does not exist on this platform, the attempt to
-
 
456
     * enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick).
-
 
457
     * Map to AE_OK, but mark global lock as not present. Any attempt to
-
 
458
     * actually use the global lock will be flagged with an error.
-
 
459
     */
-
 
460
    if (Status == AE_NO_HARDWARE_RESPONSE)
-
 
461
    {
-
 
462
        ACPI_ERROR ((AE_INFO,
-
 
463
            "No response from Global Lock hardware, disabling lock"));
-
 
464
 
-
 
465
        AcpiGbl_GlobalLockPresent = FALSE;
-
 
466
        return_ACPI_STATUS (AE_OK);
-
 
467
    }
-
 
468
 
-
 
469
    AcpiGbl_GlobalLockPresent = TRUE;
-
 
470
    return_ACPI_STATUS (Status);
-
 
471
}
-
 
472
 
-
 
473
 
-
 
474
/*******************************************************************************
-
 
475
 *
-
 
476
 * FUNCTION:    AcpiEvRemoveGlobalLockHandler
-
 
477
 *
-
 
478
 * PARAMETERS:  None
-
 
479
 *
-
 
480
 * RETURN:      Status
-
 
481
 *
-
 
482
 * DESCRIPTION: Remove the handler for the Global Lock
-
 
483
 *
-
 
484
 ******************************************************************************/
-
 
485
 
-
 
486
static ACPI_STATUS
-
 
487
AcpiEvRemoveGlobalLockHandler (
-
 
488
    void)
-
 
489
{
-
 
490
    ACPI_STATUS             Status;
-
 
491
 
-
 
492
 
-
 
493
    ACPI_FUNCTION_TRACE (EvRemoveGlobalLockHandler);
-
 
494
 
-
 
495
    AcpiGbl_GlobalLockPresent = FALSE;
-
 
496
    Status = AcpiRemoveFixedEventHandler (ACPI_EVENT_GLOBAL,
-
 
497
                AcpiEvGlobalLockHandler);
-
 
498
 
-
 
499
    return_ACPI_STATUS (Status);
-
 
500
}
-
 
501
 
-
 
502
 
-
 
503
/******************************************************************************
-
 
504
 *
-
 
505
 * FUNCTION:    AcpiEvAcquireGlobalLock
-
 
506
 *
-
 
507
 * PARAMETERS:  Timeout         - Max time to wait for the lock, in millisec.
-
 
508
 *
-
 
509
 * RETURN:      Status
-
 
510
 *
-
 
511
 * DESCRIPTION: Attempt to gain ownership of the Global Lock.
-
 
512
 *
-
 
513
 * MUTEX:       Interpreter must be locked
-
 
514
 *
-
 
515
 * Note: The original implementation allowed multiple threads to "acquire" the
-
 
516
 * Global Lock, and the OS would hold the lock until the last thread had
-
 
517
 * released it. However, this could potentially starve the BIOS out of the
-
 
518
 * lock, especially in the case where there is a tight handshake between the
-
 
519
 * Embedded Controller driver and the BIOS. Therefore, this implementation
-
 
520
 * allows only one thread to acquire the HW Global Lock at a time, and makes
-
 
521
 * the global lock appear as a standard mutex on the OS side.
-
 
522
 *
-
 
523
 *****************************************************************************/
-
 
524
 
-
 
525
ACPI_STATUS
-
 
526
AcpiEvAcquireGlobalLock (
-
 
527
    UINT16                  Timeout)
-
 
528
{
-
 
529
    ACPI_STATUS             Status = AE_OK;
-
 
530
    BOOLEAN                 Acquired = FALSE;
-
 
531
 
-
 
532
 
-
 
533
    ACPI_FUNCTION_TRACE (EvAcquireGlobalLock);
-
 
534
 
-
 
535
 
-
 
536
    /*
-
 
537
     * Only one thread can acquire the GL at a time, the GlobalLockMutex
-
 
538
     * enforces this. This interface releases the interpreter if we must wait.
-
 
539
     */
-
 
540
    Status = AcpiExSystemWaitMutex (AcpiGbl_GlobalLockMutex->Mutex.OsMutex,
-
 
541
                Timeout);
-
 
542
    if (ACPI_FAILURE (Status))
-
 
543
    {
-
 
544
        return_ACPI_STATUS (Status);
-
 
545
    }
-
 
546
 
-
 
547
    /*
-
 
548
     * Update the global lock handle and check for wraparound. The handle is
-
 
549
     * only used for the external global lock interfaces, but it is updated
-
 
550
     * here to properly handle the case where a single thread may acquire the
-
 
551
     * lock via both the AML and the AcpiAcquireGlobalLock interfaces. The
-
 
552
     * handle is therefore updated on the first acquire from a given thread
-
 
553
     * regardless of where the acquisition request originated.
-
 
554
     */
-
 
555
    AcpiGbl_GlobalLockHandle++;
-
 
556
    if (AcpiGbl_GlobalLockHandle == 0)
-
 
557
    {
-
 
558
        AcpiGbl_GlobalLockHandle = 1;
-
 
559
    }
-
 
560
 
-
 
561
    /*
-
 
562
     * Make sure that a global lock actually exists. If not, just treat the
-
 
563
     * lock as a standard mutex.
-
 
564
     */
-
 
565
    if (!AcpiGbl_GlobalLockPresent)
-
 
566
    {
-
 
567
        AcpiGbl_GlobalLockAcquired = TRUE;
-
 
568
        return_ACPI_STATUS (AE_OK);
-
 
569
    }
-
 
570
 
-
 
571
    /* Attempt to acquire the actual hardware lock */
-
 
572
 
-
 
573
    ACPI_ACQUIRE_GLOBAL_LOCK (AcpiGbl_FACS, Acquired);
-
 
574
    if (Acquired)
-
 
575
    {
-
 
576
       /* We got the lock */
-
 
577
 
-
 
578
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Acquired hardware Global Lock\n"));
-
 
579
 
-
 
580
        AcpiGbl_GlobalLockAcquired = TRUE;
-
 
581
        return_ACPI_STATUS (AE_OK);
-
 
582
    }
-
 
583
 
-
 
584
    /*
-
 
585
     * Did not get the lock. The pending bit was set above, and we must now
-
 
586
     * wait until we get the global lock released interrupt.
-
 
587
     */
-
 
588
    ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Waiting for hardware Global Lock\n"));
-
 
589
 
-
 
590
    /*
-
 
591
     * Wait for handshake with the global lock interrupt handler.
-
 
592
     * This interface releases the interpreter if we must wait.
-
 
593
     */
-
 
594
    Status = AcpiExSystemWaitSemaphore (AcpiGbl_GlobalLockSemaphore,
-
 
595
                ACPI_WAIT_FOREVER);
-
 
596
 
-
 
597
    return_ACPI_STATUS (Status);
-
 
598
}
-
 
599
 
-
 
600
 
-
 
601
/*******************************************************************************
-
 
602
 *
-
 
603
 * FUNCTION:    AcpiEvReleaseGlobalLock
-
 
604
 *
-
 
605
 * PARAMETERS:  None
-
 
606
 *
-
 
607
 * RETURN:      Status
-
 
608
 *
-
 
609
 * DESCRIPTION: Releases ownership of the Global Lock.
-
 
610
 *
-
 
611
 ******************************************************************************/
-
 
612
 
-
 
613
ACPI_STATUS
-
 
614
AcpiEvReleaseGlobalLock (
-
 
615
    void)
-
 
616
{
-
 
617
    BOOLEAN                 Pending = FALSE;
-
 
618
    ACPI_STATUS             Status = AE_OK;
-
 
619
 
-
 
620
 
-
 
621
    ACPI_FUNCTION_TRACE (EvReleaseGlobalLock);
-
 
622
 
-
 
623
 
-
 
624
    /* Lock must be already acquired */
-
 
625
 
-
 
626
    if (!AcpiGbl_GlobalLockAcquired)
-
 
627
    {
-
 
628
        ACPI_WARNING ((AE_INFO,
-
 
629
            "Cannot release the ACPI Global Lock, it has not been acquired"));
-
 
630
        return_ACPI_STATUS (AE_NOT_ACQUIRED);
-
 
631
    }
-
 
632
 
-
 
633
    if (AcpiGbl_GlobalLockPresent)
-
 
634
    {
-
 
635
        /* Allow any thread to release the lock */
-
 
636
 
-
 
637
        ACPI_RELEASE_GLOBAL_LOCK (AcpiGbl_FACS, Pending);
-
 
638
 
-
 
639
        /*
-
 
640
         * If the pending bit was set, we must write GBL_RLS to the control
-
 
641
         * register
-
 
642
         */
-
 
643
        if (Pending)
-
 
644
        {
-
 
645
            Status = AcpiWriteBitRegister (
-
 
646
                        ACPI_BITREG_GLOBAL_LOCK_RELEASE, ACPI_ENABLE_EVENT);
-
 
647
        }
-
 
648
 
-
 
649
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Released hardware Global Lock\n"));
-
 
650
    }
-
 
651
 
-
 
652
    AcpiGbl_GlobalLockAcquired = FALSE;
-
 
653
 
-
 
654
    /* Release the local GL mutex */
-
 
655
 
-
 
656
    AcpiOsReleaseMutex (AcpiGbl_GlobalLockMutex->Mutex.OsMutex);
-
 
657
    return_ACPI_STATUS (Status);
-
 
658
}
-
 
659
 
-
 
660
 
365
 
661
/******************************************************************************
366
/******************************************************************************
662
 *
367
 *
663
 * FUNCTION:    AcpiEvTerminate
368
 * FUNCTION:    AcpiEvTerminate
664
 *
369
 *
665
 * PARAMETERS:  none
370
 * PARAMETERS:  none
666
 *
371
 *
667
 * RETURN:      none
372
 * RETURN:      none
668
 *
373
 *
669
 * DESCRIPTION: Disable events and free memory allocated for table storage.
374
 * DESCRIPTION: Disable events and free memory allocated for table storage.
670
 *
375
 *
671
 ******************************************************************************/
376
 ******************************************************************************/
672
 
377
 
673
void
378
void
674
AcpiEvTerminate (
379
AcpiEvTerminate (
675
    void)
380
    void)
676
{
381
{
677
    UINT32                  i;
382
    UINT32                  i;
678
    ACPI_STATUS             Status;
383
    ACPI_STATUS             Status;
679
 
384
 
680
 
385
 
681
    ACPI_FUNCTION_TRACE (EvTerminate);
386
    ACPI_FUNCTION_TRACE (EvTerminate);
682
 
387
 
683
 
388
 
684
    if (AcpiGbl_EventsInitialized)
389
    if (AcpiGbl_EventsInitialized)
685
    {
390
    {
686
        /*
391
        /*
687
         * Disable all event-related functionality. In all cases, on error,
392
         * Disable all event-related functionality. In all cases, on error,
688
         * print a message but obviously we don't abort.
393
         * print a message but obviously we don't abort.
689
         */
394
         */
690
 
395
 
691
        /* Disable all fixed events */
396
        /* Disable all fixed events */
692
 
397
 
693
        for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
398
        for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
694
        {
399
        {
695
            Status = AcpiDisableEvent (i, 0);
400
            Status = AcpiDisableEvent (i, 0);
696
            if (ACPI_FAILURE (Status))
401
            if (ACPI_FAILURE (Status))
697
            {
402
            {
698
                ACPI_ERROR ((AE_INFO,
403
                ACPI_ERROR ((AE_INFO,
699
                    "Could not disable fixed event %u", (UINT32) i));
404
                    "Could not disable fixed event %u", (UINT32) i));
700
            }
405
            }
701
        }
406
        }
702
 
407
 
703
        /* Disable all GPEs in all GPE blocks */
408
        /* Disable all GPEs in all GPE blocks */
704
 
409
 
705
        Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, NULL);
410
        Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, NULL);
706
 
411
 
707
        /* Remove SCI handler */
412
        /* Remove SCI handler */
708
 
413
 
709
        Status = AcpiEvRemoveSciHandler ();
414
        Status = AcpiEvRemoveSciHandler ();
710
        if (ACPI_FAILURE(Status))
415
        if (ACPI_FAILURE(Status))
711
        {
416
        {
712
            ACPI_ERROR ((AE_INFO,
417
            ACPI_ERROR ((AE_INFO,
713
                "Could not remove SCI handler"));
418
                "Could not remove SCI handler"));
714
        }
419
        }
715
 
420
 
716
        Status = AcpiEvRemoveGlobalLockHandler ();
421
        Status = AcpiEvRemoveGlobalLockHandler ();
717
        if (ACPI_FAILURE(Status))
422
        if (ACPI_FAILURE(Status))
718
        {
423
        {
719
            ACPI_ERROR ((AE_INFO,
424
            ACPI_ERROR ((AE_INFO,
720
                "Could not remove Global Lock handler"));
425
                "Could not remove Global Lock handler"));
721
        }
426
        }
722
    }
427
    }
723
 
428
 
724
    /* Deallocate all handler objects installed within GPE info structs */
429
    /* Deallocate all handler objects installed within GPE info structs */
725
 
430
 
726
    Status = AcpiEvWalkGpeList (AcpiEvDeleteGpeHandlers, NULL);
431
    Status = AcpiEvWalkGpeList (AcpiEvDeleteGpeHandlers, NULL);
727
 
432
 
728
    /* Return to original mode if necessary */
433
    /* Return to original mode if necessary */
729
 
434
 
730
    if (AcpiGbl_OriginalMode == ACPI_SYS_MODE_LEGACY)
435
    if (AcpiGbl_OriginalMode == ACPI_SYS_MODE_LEGACY)
731
    {
436
    {
732
        Status = AcpiDisable ();
437
        Status = AcpiDisable ();
733
        if (ACPI_FAILURE (Status))
438
        if (ACPI_FAILURE (Status))
734
        {
439
        {
735
            ACPI_WARNING ((AE_INFO, "AcpiDisable failed"));
440
            ACPI_WARNING ((AE_INFO, "AcpiDisable failed"));
736
        }
441
        }
737
    }
442
    }
738
    return_VOID;
443
    return_VOID;
739
}
444
}
740
-