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1 | /******************************************************************************* |
1 | /******************************************************************************* |
2 | * |
2 | * |
3 | * Module Name: utmutex - local mutex support |
3 | * Module Name: utmutex - local mutex support |
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 | 116 | ||
117 | #define __UTMUTEX_C__ |
117 | #define __UTMUTEX_C__ |
118 | 118 | ||
119 | #include "acpi.h" |
119 | #include "acpi.h" |
120 | #include "accommon.h" |
120 | #include "accommon.h" |
121 | 121 | ||
122 | #define _COMPONENT ACPI_UTILITIES |
122 | #define _COMPONENT ACPI_UTILITIES |
123 | ACPI_MODULE_NAME ("utmutex") |
123 | ACPI_MODULE_NAME ("utmutex") |
124 | 124 | ||
125 | /* Local prototypes */ |
125 | /* Local prototypes */ |
126 | 126 | ||
127 | static ACPI_STATUS |
127 | static ACPI_STATUS |
128 | AcpiUtCreateMutex ( |
128 | AcpiUtCreateMutex ( |
129 | ACPI_MUTEX_HANDLE MutexId); |
129 | ACPI_MUTEX_HANDLE MutexId); |
130 | 130 | ||
131 | static void |
131 | static void |
132 | AcpiUtDeleteMutex ( |
132 | AcpiUtDeleteMutex ( |
133 | ACPI_MUTEX_HANDLE MutexId); |
133 | ACPI_MUTEX_HANDLE MutexId); |
134 | 134 | ||
135 | 135 | ||
136 | /******************************************************************************* |
136 | /******************************************************************************* |
137 | * |
137 | * |
138 | * FUNCTION: AcpiUtMutexInitialize |
138 | * FUNCTION: AcpiUtMutexInitialize |
139 | * |
139 | * |
140 | * PARAMETERS: None. |
140 | * PARAMETERS: None. |
141 | * |
141 | * |
142 | * RETURN: Status |
142 | * RETURN: Status |
143 | * |
143 | * |
144 | * DESCRIPTION: Create the system mutex objects. This includes mutexes, |
144 | * DESCRIPTION: Create the system mutex objects. This includes mutexes, |
145 | * spin locks, and reader/writer locks. |
145 | * spin locks, and reader/writer locks. |
146 | * |
146 | * |
147 | ******************************************************************************/ |
147 | ******************************************************************************/ |
148 | 148 | ||
149 | ACPI_STATUS |
149 | ACPI_STATUS |
150 | AcpiUtMutexInitialize ( |
150 | AcpiUtMutexInitialize ( |
151 | void) |
151 | void) |
152 | { |
152 | { |
153 | UINT32 i; |
153 | UINT32 i; |
154 | ACPI_STATUS Status; |
154 | ACPI_STATUS Status; |
155 | 155 | ||
156 | 156 | ||
157 | ACPI_FUNCTION_TRACE (UtMutexInitialize); |
157 | ACPI_FUNCTION_TRACE (UtMutexInitialize); |
158 | 158 | ||
159 | 159 | ||
160 | /* Create each of the predefined mutex objects */ |
160 | /* Create each of the predefined mutex objects */ |
161 | 161 | ||
162 | for (i = 0; i < ACPI_NUM_MUTEX; i++) |
162 | for (i = 0; i < ACPI_NUM_MUTEX; i++) |
163 | { |
163 | { |
164 | Status = AcpiUtCreateMutex (i); |
164 | Status = AcpiUtCreateMutex (i); |
165 | if (ACPI_FAILURE (Status)) |
165 | if (ACPI_FAILURE (Status)) |
166 | { |
166 | { |
167 | return_ACPI_STATUS (Status); |
167 | return_ACPI_STATUS (Status); |
168 | } |
168 | } |
169 | } |
169 | } |
170 | 170 | ||
171 | /* Create the spinlocks for use at interrupt level */ |
171 | /* Create the spinlocks for use at interrupt level */ |
172 | 172 | ||
173 | Status = AcpiOsCreateLock (&AcpiGbl_GpeLock); |
173 | Status = AcpiOsCreateLock (&AcpiGbl_GpeLock); |
174 | if (ACPI_FAILURE (Status)) |
174 | if (ACPI_FAILURE (Status)) |
175 | { |
175 | { |
176 | return_ACPI_STATUS (Status); |
176 | return_ACPI_STATUS (Status); |
177 | } |
177 | } |
178 | 178 | ||
179 | Status = AcpiOsCreateLock (&AcpiGbl_HardwareLock); |
179 | Status = AcpiOsCreateLock (&AcpiGbl_HardwareLock); |
180 | if (ACPI_FAILURE (Status)) |
180 | if (ACPI_FAILURE (Status)) |
181 | { |
181 | { |
182 | return_ACPI_STATUS (Status); |
182 | return_ACPI_STATUS (Status); |
183 | } |
183 | } |
- | 184 | ||
- | 185 | /* Mutex for _OSI support */ |
|
- | 186 | Status = AcpiOsCreateMutex (&AcpiGbl_OsiMutex); |
|
- | 187 | if (ACPI_FAILURE (Status)) |
|
- | 188 | { |
|
- | 189 | return_ACPI_STATUS (Status); |
|
- | 190 | } |
|
184 | 191 | ||
185 | /* Create the reader/writer lock for namespace access */ |
192 | /* Create the reader/writer lock for namespace access */ |
186 | 193 | ||
187 | Status = AcpiUtCreateRwLock (&AcpiGbl_NamespaceRwLock); |
194 | Status = AcpiUtCreateRwLock (&AcpiGbl_NamespaceRwLock); |
188 | return_ACPI_STATUS (Status); |
195 | return_ACPI_STATUS (Status); |
189 | } |
196 | } |
190 | 197 | ||
191 | 198 | ||
192 | /******************************************************************************* |
199 | /******************************************************************************* |
193 | * |
200 | * |
194 | * FUNCTION: AcpiUtMutexTerminate |
201 | * FUNCTION: AcpiUtMutexTerminate |
195 | * |
202 | * |
196 | * PARAMETERS: None. |
203 | * PARAMETERS: None. |
197 | * |
204 | * |
198 | * RETURN: None. |
205 | * RETURN: None. |
199 | * |
206 | * |
200 | * DESCRIPTION: Delete all of the system mutex objects. This includes mutexes, |
207 | * DESCRIPTION: Delete all of the system mutex objects. This includes mutexes, |
201 | * spin locks, and reader/writer locks. |
208 | * spin locks, and reader/writer locks. |
202 | * |
209 | * |
203 | ******************************************************************************/ |
210 | ******************************************************************************/ |
204 | 211 | ||
205 | void |
212 | void |
206 | AcpiUtMutexTerminate ( |
213 | AcpiUtMutexTerminate ( |
207 | void) |
214 | void) |
208 | { |
215 | { |
209 | UINT32 i; |
216 | UINT32 i; |
210 | 217 | ||
211 | 218 | ||
212 | ACPI_FUNCTION_TRACE (UtMutexTerminate); |
219 | ACPI_FUNCTION_TRACE (UtMutexTerminate); |
213 | 220 | ||
214 | 221 | ||
215 | /* Delete each predefined mutex object */ |
222 | /* Delete each predefined mutex object */ |
216 | 223 | ||
217 | for (i = 0; i < ACPI_NUM_MUTEX; i++) |
224 | for (i = 0; i < ACPI_NUM_MUTEX; i++) |
218 | { |
225 | { |
219 | AcpiUtDeleteMutex (i); |
226 | AcpiUtDeleteMutex (i); |
220 | } |
227 | } |
- | 228 | ||
- | 229 | AcpiOsDeleteMutex (AcpiGbl_OsiMutex); |
|
221 | 230 | ||
222 | /* Delete the spinlocks */ |
231 | /* Delete the spinlocks */ |
223 | 232 | ||
224 | AcpiOsDeleteLock (AcpiGbl_GpeLock); |
233 | AcpiOsDeleteLock (AcpiGbl_GpeLock); |
225 | AcpiOsDeleteLock (AcpiGbl_HardwareLock); |
234 | AcpiOsDeleteLock (AcpiGbl_HardwareLock); |
226 | 235 | ||
227 | /* Delete the reader/writer lock */ |
236 | /* Delete the reader/writer lock */ |
228 | 237 | ||
229 | AcpiUtDeleteRwLock (&AcpiGbl_NamespaceRwLock); |
238 | AcpiUtDeleteRwLock (&AcpiGbl_NamespaceRwLock); |
230 | return_VOID; |
239 | return_VOID; |
231 | } |
240 | } |
232 | 241 | ||
233 | 242 | ||
234 | /******************************************************************************* |
243 | /******************************************************************************* |
235 | * |
244 | * |
236 | * FUNCTION: AcpiUtCreateMutex |
245 | * FUNCTION: AcpiUtCreateMutex |
237 | * |
246 | * |
238 | * PARAMETERS: MutexID - ID of the mutex to be created |
247 | * PARAMETERS: MutexID - ID of the mutex to be created |
239 | * |
248 | * |
240 | * RETURN: Status |
249 | * RETURN: Status |
241 | * |
250 | * |
242 | * DESCRIPTION: Create a mutex object. |
251 | * DESCRIPTION: Create a mutex object. |
243 | * |
252 | * |
244 | ******************************************************************************/ |
253 | ******************************************************************************/ |
245 | 254 | ||
246 | static ACPI_STATUS |
255 | static ACPI_STATUS |
247 | AcpiUtCreateMutex ( |
256 | AcpiUtCreateMutex ( |
248 | ACPI_MUTEX_HANDLE MutexId) |
257 | ACPI_MUTEX_HANDLE MutexId) |
249 | { |
258 | { |
250 | ACPI_STATUS Status = AE_OK; |
259 | ACPI_STATUS Status = AE_OK; |
251 | 260 | ||
252 | 261 | ||
253 | ACPI_FUNCTION_TRACE_U32 (UtCreateMutex, MutexId); |
262 | ACPI_FUNCTION_TRACE_U32 (UtCreateMutex, MutexId); |
254 | 263 | ||
255 | 264 | ||
256 | if (!AcpiGbl_MutexInfo[MutexId].Mutex) |
265 | if (!AcpiGbl_MutexInfo[MutexId].Mutex) |
257 | { |
266 | { |
258 | Status = AcpiOsCreateMutex (&AcpiGbl_MutexInfo[MutexId].Mutex); |
267 | Status = AcpiOsCreateMutex (&AcpiGbl_MutexInfo[MutexId].Mutex); |
259 | AcpiGbl_MutexInfo[MutexId].ThreadId = ACPI_MUTEX_NOT_ACQUIRED; |
268 | AcpiGbl_MutexInfo[MutexId].ThreadId = ACPI_MUTEX_NOT_ACQUIRED; |
260 | AcpiGbl_MutexInfo[MutexId].UseCount = 0; |
269 | AcpiGbl_MutexInfo[MutexId].UseCount = 0; |
261 | } |
270 | } |
262 | 271 | ||
263 | return_ACPI_STATUS (Status); |
272 | return_ACPI_STATUS (Status); |
264 | } |
273 | } |
265 | 274 | ||
266 | 275 | ||
267 | /******************************************************************************* |
276 | /******************************************************************************* |
268 | * |
277 | * |
269 | * FUNCTION: AcpiUtDeleteMutex |
278 | * FUNCTION: AcpiUtDeleteMutex |
270 | * |
279 | * |
271 | * PARAMETERS: MutexID - ID of the mutex to be deleted |
280 | * PARAMETERS: MutexID - ID of the mutex to be deleted |
272 | * |
281 | * |
273 | * RETURN: Status |
282 | * RETURN: Status |
274 | * |
283 | * |
275 | * DESCRIPTION: Delete a mutex object. |
284 | * DESCRIPTION: Delete a mutex object. |
276 | * |
285 | * |
277 | ******************************************************************************/ |
286 | ******************************************************************************/ |
278 | 287 | ||
279 | static void |
288 | static void |
280 | AcpiUtDeleteMutex ( |
289 | AcpiUtDeleteMutex ( |
281 | ACPI_MUTEX_HANDLE MutexId) |
290 | ACPI_MUTEX_HANDLE MutexId) |
282 | { |
291 | { |
283 | 292 | ||
284 | ACPI_FUNCTION_TRACE_U32 (UtDeleteMutex, MutexId); |
293 | ACPI_FUNCTION_TRACE_U32 (UtDeleteMutex, MutexId); |
285 | 294 | ||
286 | 295 | ||
287 | AcpiOsDeleteMutex (AcpiGbl_MutexInfo[MutexId].Mutex); |
296 | AcpiOsDeleteMutex (AcpiGbl_MutexInfo[MutexId].Mutex); |
288 | 297 | ||
289 | AcpiGbl_MutexInfo[MutexId].Mutex = NULL; |
298 | AcpiGbl_MutexInfo[MutexId].Mutex = NULL; |
290 | AcpiGbl_MutexInfo[MutexId].ThreadId = ACPI_MUTEX_NOT_ACQUIRED; |
299 | AcpiGbl_MutexInfo[MutexId].ThreadId = ACPI_MUTEX_NOT_ACQUIRED; |
291 | } |
300 | } |
292 | 301 | ||
293 | 302 | ||
294 | /******************************************************************************* |
303 | /******************************************************************************* |
295 | * |
304 | * |
296 | * FUNCTION: AcpiUtAcquireMutex |
305 | * FUNCTION: AcpiUtAcquireMutex |
297 | * |
306 | * |
298 | * PARAMETERS: MutexID - ID of the mutex to be acquired |
307 | * PARAMETERS: MutexID - ID of the mutex to be acquired |
299 | * |
308 | * |
300 | * RETURN: Status |
309 | * RETURN: Status |
301 | * |
310 | * |
302 | * DESCRIPTION: Acquire a mutex object. |
311 | * DESCRIPTION: Acquire a mutex object. |
303 | * |
312 | * |
304 | ******************************************************************************/ |
313 | ******************************************************************************/ |
305 | 314 | ||
306 | ACPI_STATUS |
315 | ACPI_STATUS |
307 | AcpiUtAcquireMutex ( |
316 | AcpiUtAcquireMutex ( |
308 | ACPI_MUTEX_HANDLE MutexId) |
317 | ACPI_MUTEX_HANDLE MutexId) |
309 | { |
318 | { |
310 | ACPI_STATUS Status; |
319 | ACPI_STATUS Status; |
311 | ACPI_THREAD_ID ThisThreadId; |
320 | ACPI_THREAD_ID ThisThreadId; |
312 | 321 | ||
313 | 322 | ||
314 | ACPI_FUNCTION_NAME (UtAcquireMutex); |
323 | ACPI_FUNCTION_NAME (UtAcquireMutex); |
315 | 324 | ||
316 | 325 | ||
317 | if (MutexId > ACPI_MAX_MUTEX) |
326 | if (MutexId > ACPI_MAX_MUTEX) |
318 | { |
327 | { |
319 | return (AE_BAD_PARAMETER); |
328 | return (AE_BAD_PARAMETER); |
320 | } |
329 | } |
321 | 330 | ||
322 | ThisThreadId = AcpiOsGetThreadId (); |
331 | ThisThreadId = AcpiOsGetThreadId (); |
323 | 332 | ||
324 | #ifdef ACPI_MUTEX_DEBUG |
333 | #ifdef ACPI_MUTEX_DEBUG |
325 | { |
334 | { |
326 | UINT32 i; |
335 | UINT32 i; |
327 | /* |
336 | /* |
328 | * Mutex debug code, for internal debugging only. |
337 | * Mutex debug code, for internal debugging only. |
329 | * |
338 | * |
330 | * Deadlock prevention. Check if this thread owns any mutexes of value |
339 | * Deadlock prevention. Check if this thread owns any mutexes of value |
331 | * greater than or equal to this one. If so, the thread has violated |
340 | * greater than or equal to this one. If so, the thread has violated |
332 | * the mutex ordering rule. This indicates a coding error somewhere in |
341 | * the mutex ordering rule. This indicates a coding error somewhere in |
333 | * the ACPI subsystem code. |
342 | * the ACPI subsystem code. |
334 | */ |
343 | */ |
335 | for (i = MutexId; i < ACPI_NUM_MUTEX; i++) |
344 | for (i = MutexId; i < ACPI_NUM_MUTEX; i++) |
336 | { |
345 | { |
337 | if (AcpiGbl_MutexInfo[i].ThreadId == ThisThreadId) |
346 | if (AcpiGbl_MutexInfo[i].ThreadId == ThisThreadId) |
338 | { |
347 | { |
339 | if (i == MutexId) |
348 | if (i == MutexId) |
340 | { |
349 | { |
341 | ACPI_ERROR ((AE_INFO, |
350 | ACPI_ERROR ((AE_INFO, |
342 | "Mutex [%s] already acquired by this thread [%p]", |
351 | "Mutex [%s] already acquired by this thread [%u]", |
343 | AcpiUtGetMutexName (MutexId), |
352 | AcpiUtGetMutexName (MutexId), |
344 | ACPI_CAST_PTR (void, ThisThreadId))); |
353 | (UINT32) ThisThreadId)); |
345 | 354 | ||
346 | return (AE_ALREADY_ACQUIRED); |
355 | return (AE_ALREADY_ACQUIRED); |
347 | } |
356 | } |
348 | 357 | ||
349 | ACPI_ERROR ((AE_INFO, |
358 | ACPI_ERROR ((AE_INFO, |
350 | "Invalid acquire order: Thread %p owns [%s], wants [%s]", |
359 | "Invalid acquire order: Thread %u owns [%s], wants [%s]", |
351 | ACPI_CAST_PTR (void, ThisThreadId), AcpiUtGetMutexName (i), |
360 | (UINT32) ThisThreadId, AcpiUtGetMutexName (i), |
352 | AcpiUtGetMutexName (MutexId))); |
361 | AcpiUtGetMutexName (MutexId))); |
353 | 362 | ||
354 | return (AE_ACQUIRE_DEADLOCK); |
363 | return (AE_ACQUIRE_DEADLOCK); |
355 | } |
364 | } |
356 | } |
365 | } |
357 | } |
366 | } |
358 | #endif |
367 | #endif |
359 | 368 | ||
360 | ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, |
369 | ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, |
361 | "Thread %p attempting to acquire Mutex [%s]\n", |
370 | "Thread %u attempting to acquire Mutex [%s]\n", |
362 | ACPI_CAST_PTR (void, ThisThreadId), AcpiUtGetMutexName (MutexId))); |
371 | (UINT32) ThisThreadId, AcpiUtGetMutexName (MutexId))); |
363 | 372 | ||
364 | Status = AcpiOsAcquireMutex (AcpiGbl_MutexInfo[MutexId].Mutex, |
373 | Status = AcpiOsAcquireMutex (AcpiGbl_MutexInfo[MutexId].Mutex, |
365 | ACPI_WAIT_FOREVER); |
374 | ACPI_WAIT_FOREVER); |
366 | if (ACPI_SUCCESS (Status)) |
375 | if (ACPI_SUCCESS (Status)) |
367 | { |
376 | { |
368 | ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %p acquired Mutex [%s]\n", |
377 | ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %u acquired Mutex [%s]\n", |
369 | ACPI_CAST_PTR (void, ThisThreadId), AcpiUtGetMutexName (MutexId))); |
378 | (UINT32) ThisThreadId, AcpiUtGetMutexName (MutexId))); |
370 | 379 | ||
371 | AcpiGbl_MutexInfo[MutexId].UseCount++; |
380 | AcpiGbl_MutexInfo[MutexId].UseCount++; |
372 | AcpiGbl_MutexInfo[MutexId].ThreadId = ThisThreadId; |
381 | AcpiGbl_MutexInfo[MutexId].ThreadId = ThisThreadId; |
373 | } |
382 | } |
374 | else |
383 | else |
375 | { |
384 | { |
376 | ACPI_EXCEPTION ((AE_INFO, Status, |
385 | ACPI_EXCEPTION ((AE_INFO, Status, |
377 | "Thread %p could not acquire Mutex [0x%X]", |
386 | "Thread %u could not acquire Mutex [0x%X]", |
378 | ACPI_CAST_PTR (void, ThisThreadId), MutexId)); |
387 | (UINT32) ThisThreadId, MutexId)); |
379 | } |
388 | } |
380 | 389 | ||
381 | return (Status); |
390 | return (Status); |
382 | } |
391 | } |
383 | 392 | ||
384 | 393 | ||
385 | /******************************************************************************* |
394 | /******************************************************************************* |
386 | * |
395 | * |
387 | * FUNCTION: AcpiUtReleaseMutex |
396 | * FUNCTION: AcpiUtReleaseMutex |
388 | * |
397 | * |
389 | * PARAMETERS: MutexID - ID of the mutex to be released |
398 | * PARAMETERS: MutexID - ID of the mutex to be released |
390 | * |
399 | * |
391 | * RETURN: Status |
400 | * RETURN: Status |
392 | * |
401 | * |
393 | * DESCRIPTION: Release a mutex object. |
402 | * DESCRIPTION: Release a mutex object. |
394 | * |
403 | * |
395 | ******************************************************************************/ |
404 | ******************************************************************************/ |
396 | 405 | ||
397 | ACPI_STATUS |
406 | ACPI_STATUS |
398 | AcpiUtReleaseMutex ( |
407 | AcpiUtReleaseMutex ( |
399 | ACPI_MUTEX_HANDLE MutexId) |
408 | ACPI_MUTEX_HANDLE MutexId) |
400 | { |
409 | { |
401 | ACPI_THREAD_ID ThisThreadId; |
410 | ACPI_THREAD_ID ThisThreadId; |
402 | 411 | ||
403 | 412 | ||
404 | ACPI_FUNCTION_NAME (UtReleaseMutex); |
413 | ACPI_FUNCTION_NAME (UtReleaseMutex); |
405 | 414 | ||
406 | 415 | ||
407 | ThisThreadId = AcpiOsGetThreadId (); |
416 | ThisThreadId = AcpiOsGetThreadId (); |
408 | ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %p releasing Mutex [%s]\n", |
417 | ACPI_DEBUG_PRINT ((ACPI_DB_MUTEX, "Thread %u releasing Mutex [%s]\n", |
409 | ACPI_CAST_PTR (void, ThisThreadId), AcpiUtGetMutexName (MutexId))); |
418 | (UINT32) ThisThreadId, AcpiUtGetMutexName (MutexId))); |
410 | 419 | ||
411 | if (MutexId > ACPI_MAX_MUTEX) |
420 | if (MutexId > ACPI_MAX_MUTEX) |
412 | { |
421 | { |
413 | return (AE_BAD_PARAMETER); |
422 | return (AE_BAD_PARAMETER); |
414 | } |
423 | } |
415 | 424 | ||
416 | /* |
425 | /* |
417 | * Mutex must be acquired in order to release it! |
426 | * Mutex must be acquired in order to release it! |
418 | */ |
427 | */ |
419 | if (AcpiGbl_MutexInfo[MutexId].ThreadId == ACPI_MUTEX_NOT_ACQUIRED) |
428 | if (AcpiGbl_MutexInfo[MutexId].ThreadId == ACPI_MUTEX_NOT_ACQUIRED) |
420 | { |
429 | { |
421 | ACPI_ERROR ((AE_INFO, |
430 | ACPI_ERROR ((AE_INFO, |
422 | "Mutex [0x%X] is not acquired, cannot release", MutexId)); |
431 | "Mutex [0x%X] is not acquired, cannot release", MutexId)); |
423 | 432 | ||
424 | return (AE_NOT_ACQUIRED); |
433 | return (AE_NOT_ACQUIRED); |
425 | } |
434 | } |
426 | 435 | ||
427 | #ifdef ACPI_MUTEX_DEBUG |
436 | #ifdef ACPI_MUTEX_DEBUG |
428 | { |
437 | { |
429 | UINT32 i; |
438 | UINT32 i; |
430 | /* |
439 | /* |
431 | * Mutex debug code, for internal debugging only. |
440 | * Mutex debug code, for internal debugging only. |
432 | * |
441 | * |
433 | * Deadlock prevention. Check if this thread owns any mutexes of value |
442 | * Deadlock prevention. Check if this thread owns any mutexes of value |
434 | * greater than this one. If so, the thread has violated the mutex |
443 | * greater than this one. If so, the thread has violated the mutex |
435 | * ordering rule. This indicates a coding error somewhere in |
444 | * ordering rule. This indicates a coding error somewhere in |
436 | * the ACPI subsystem code. |
445 | * the ACPI subsystem code. |
437 | */ |
446 | */ |
438 | for (i = MutexId; i < ACPI_NUM_MUTEX; i++) |
447 | for (i = MutexId; i < ACPI_NUM_MUTEX; i++) |
439 | { |
448 | { |
440 | if (AcpiGbl_MutexInfo[i].ThreadId == ThisThreadId) |
449 | if (AcpiGbl_MutexInfo[i].ThreadId == ThisThreadId) |
441 | { |
450 | { |
442 | if (i == MutexId) |
451 | if (i == MutexId) |
443 | { |
452 | { |
444 | continue; |
453 | continue; |
445 | } |
454 | } |
446 | 455 | ||
447 | ACPI_ERROR ((AE_INFO, |
456 | ACPI_ERROR ((AE_INFO, |
448 | "Invalid release order: owns [%s], releasing [%s]", |
457 | "Invalid release order: owns [%s], releasing [%s]", |
449 | AcpiUtGetMutexName (i), AcpiUtGetMutexName (MutexId))); |
458 | AcpiUtGetMutexName (i), AcpiUtGetMutexName (MutexId))); |
450 | 459 | ||
451 | return (AE_RELEASE_DEADLOCK); |
460 | return (AE_RELEASE_DEADLOCK); |
452 | } |
461 | } |
453 | } |
462 | } |
454 | } |
463 | } |
455 | #endif |
464 | #endif |
456 | 465 | ||
457 | /* Mark unlocked FIRST */ |
466 | /* Mark unlocked FIRST */ |
458 | 467 | ||
459 | AcpiGbl_MutexInfo[MutexId].ThreadId = ACPI_MUTEX_NOT_ACQUIRED; |
468 | AcpiGbl_MutexInfo[MutexId].ThreadId = ACPI_MUTEX_NOT_ACQUIRED; |
460 | 469 | ||
461 | AcpiOsReleaseMutex (AcpiGbl_MutexInfo[MutexId].Mutex); |
470 | AcpiOsReleaseMutex (AcpiGbl_MutexInfo[MutexId].Mutex); |
462 | return (AE_OK); |
471 | return (AE_OK); |
463 | }>>>> |
472 | }>>>> |