1 /******************************************************************************
2 *
3 * Module Name: uteval - Object evaluation
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2011, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
78 UINT32 ExpectedReturnBtypes,
79 ACPI_OPERAND_OBJECT **ReturnDesc)
80 {
81 ACPI_EVALUATE_INFO *Info;
82 ACPI_STATUS Status;
83 UINT32 ReturnBtype;
84
85
86 ACPI_FUNCTION_TRACE (UtEvaluateObject);
87
88
89 /* Allocate the evaluation information block */
90
91 Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
92 if (!Info)
93 {
94 return_ACPI_STATUS (AE_NO_MEMORY);
95 }
96
97 Info->PrefixNode = PrefixNode;
98 Info->Pathname = Path;
99
100 /* Evaluate the object/method */
101
102 Status = AcpiNsEvaluate (Info);
103 if (ACPI_FAILURE (Status))
104 {
105 if (Status == AE_NOT_FOUND)
106 {
107 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s.%s] was not found\n",
108 AcpiUtGetNodeName (PrefixNode), Path));
109 }
110 else
111 {
112 ACPI_ERROR_METHOD ("Method execution failed",
113 PrefixNode, Path, Status);
114 }
115
116 goto Cleanup;
117 }
118
119 /* Did we get a return object? */
120
121 if (!Info->ReturnObject)
122 {
123 if (ExpectedReturnBtypes)
124 {
125 ACPI_ERROR_METHOD ("No object was returned from",
126 PrefixNode, Path, AE_NOT_EXIST);
127
128 Status = AE_NOT_EXIST;
129 }
130
131 goto Cleanup;
132 }
133
134 /* Map the return object type to the bitmapped type */
135
136 switch ((Info->ReturnObject)->Common.Type)
137 {
138 case ACPI_TYPE_INTEGER:
139 ReturnBtype = ACPI_BTYPE_INTEGER;
140 break;
141
142 case ACPI_TYPE_BUFFER:
143 ReturnBtype = ACPI_BTYPE_BUFFER;
144 break;
145
146 case ACPI_TYPE_STRING:
147 ReturnBtype = ACPI_BTYPE_STRING;
148 break;
149
150 case ACPI_TYPE_PACKAGE:
151 ReturnBtype = ACPI_BTYPE_PACKAGE;
152 break;
153
154 default:
155 ReturnBtype = 0;
156 break;
157 }
158
159 if ((AcpiGbl_EnableInterpreterSlack) &&
160 (!ExpectedReturnBtypes))
161 {
162 /*
163 * We received a return object, but one was not expected. This can
164 * happen frequently if the "implicit return" feature is enabled.
165 * Just delete the return object and return AE_OK.
166 */
167 AcpiUtRemoveReference (Info->ReturnObject);
168 goto Cleanup;
169 }
170
171 /* Is the return object one of the expected types? */
172
173 if (!(ExpectedReturnBtypes & ReturnBtype))
174 {
238
239 *Value = ObjDesc->Integer.Value;
240
241 /* On exit, we must delete the return object */
242
243 AcpiUtRemoveReference (ObjDesc);
244 return_ACPI_STATUS (Status);
245 }
246
247
248 /*******************************************************************************
249 *
250 * FUNCTION: AcpiUtExecute_STA
251 *
252 * PARAMETERS: DeviceNode - Node for the device
253 * Flags - Where the status flags are returned
254 *
255 * RETURN: Status
256 *
257 * DESCRIPTION: Executes _STA for selected device and stores results in
258 * *Flags.
259 *
260 * NOTE: Internal function, no parameter validation
261 *
262 ******************************************************************************/
263
264 ACPI_STATUS
265 AcpiUtExecute_STA (
266 ACPI_NAMESPACE_NODE *DeviceNode,
267 UINT32 *Flags)
268 {
269 ACPI_OPERAND_OBJECT *ObjDesc;
270 ACPI_STATUS Status;
271
272
273 ACPI_FUNCTION_TRACE (UtExecute_STA);
274
275
276 Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__STA,
277 ACPI_BTYPE_INTEGER, &ObjDesc);
278 if (ACPI_FAILURE (Status))
279 {
280 if (AE_NOT_FOUND == Status)
281 {
282 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
283 "_STA on %4.4s was not found, assuming device is present\n",
284 AcpiUtGetNodeName (DeviceNode)));
285
286 *Flags = ACPI_UINT32_MAX;
287 Status = AE_OK;
288 }
289
290 return_ACPI_STATUS (Status);
291 }
292
293 /* Extract the status flags */
294
295 *Flags = (UINT32) ObjDesc->Integer.Value;
296
297 /* On exit, we must delete the return object */
298
299 AcpiUtRemoveReference (ObjDesc);
300 return_ACPI_STATUS (Status);
301 }
|
1 /******************************************************************************
2 *
3 * Module Name: uteval - Object evaluation
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2013, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
78 UINT32 ExpectedReturnBtypes,
79 ACPI_OPERAND_OBJECT **ReturnDesc)
80 {
81 ACPI_EVALUATE_INFO *Info;
82 ACPI_STATUS Status;
83 UINT32 ReturnBtype;
84
85
86 ACPI_FUNCTION_TRACE (UtEvaluateObject);
87
88
89 /* Allocate the evaluation information block */
90
91 Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
92 if (!Info)
93 {
94 return_ACPI_STATUS (AE_NO_MEMORY);
95 }
96
97 Info->PrefixNode = PrefixNode;
98 Info->RelativePathname = Path;
99
100 /* Evaluate the object/method */
101
102 Status = AcpiNsEvaluate (Info);
103 if (ACPI_FAILURE (Status))
104 {
105 if (Status == AE_NOT_FOUND)
106 {
107 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s.%s] was not found\n",
108 AcpiUtGetNodeName (PrefixNode), Path));
109 }
110 else
111 {
112 ACPI_ERROR_METHOD ("Method execution failed",
113 PrefixNode, Path, Status);
114 }
115
116 goto Cleanup;
117 }
118
119 /* Did we get a return object? */
120
121 if (!Info->ReturnObject)
122 {
123 if (ExpectedReturnBtypes)
124 {
125 ACPI_ERROR_METHOD ("No object was returned from",
126 PrefixNode, Path, AE_NOT_EXIST);
127
128 Status = AE_NOT_EXIST;
129 }
130
131 goto Cleanup;
132 }
133
134 /* Map the return object type to the bitmapped type */
135
136 switch ((Info->ReturnObject)->Common.Type)
137 {
138 case ACPI_TYPE_INTEGER:
139
140 ReturnBtype = ACPI_BTYPE_INTEGER;
141 break;
142
143 case ACPI_TYPE_BUFFER:
144
145 ReturnBtype = ACPI_BTYPE_BUFFER;
146 break;
147
148 case ACPI_TYPE_STRING:
149
150 ReturnBtype = ACPI_BTYPE_STRING;
151 break;
152
153 case ACPI_TYPE_PACKAGE:
154
155 ReturnBtype = ACPI_BTYPE_PACKAGE;
156 break;
157
158 default:
159
160 ReturnBtype = 0;
161 break;
162 }
163
164 if ((AcpiGbl_EnableInterpreterSlack) &&
165 (!ExpectedReturnBtypes))
166 {
167 /*
168 * We received a return object, but one was not expected. This can
169 * happen frequently if the "implicit return" feature is enabled.
170 * Just delete the return object and return AE_OK.
171 */
172 AcpiUtRemoveReference (Info->ReturnObject);
173 goto Cleanup;
174 }
175
176 /* Is the return object one of the expected types? */
177
178 if (!(ExpectedReturnBtypes & ReturnBtype))
179 {
243
244 *Value = ObjDesc->Integer.Value;
245
246 /* On exit, we must delete the return object */
247
248 AcpiUtRemoveReference (ObjDesc);
249 return_ACPI_STATUS (Status);
250 }
251
252
253 /*******************************************************************************
254 *
255 * FUNCTION: AcpiUtExecute_STA
256 *
257 * PARAMETERS: DeviceNode - Node for the device
258 * Flags - Where the status flags are returned
259 *
260 * RETURN: Status
261 *
262 * DESCRIPTION: Executes _STA for selected device and stores results in
263 * *Flags. If _STA does not exist, then the device is assumed
264 * to be present/functional/enabled (as per the ACPI spec).
265 *
266 * NOTE: Internal function, no parameter validation
267 *
268 ******************************************************************************/
269
270 ACPI_STATUS
271 AcpiUtExecute_STA (
272 ACPI_NAMESPACE_NODE *DeviceNode,
273 UINT32 *Flags)
274 {
275 ACPI_OPERAND_OBJECT *ObjDesc;
276 ACPI_STATUS Status;
277
278
279 ACPI_FUNCTION_TRACE (UtExecute_STA);
280
281
282 Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__STA,
283 ACPI_BTYPE_INTEGER, &ObjDesc);
284 if (ACPI_FAILURE (Status))
285 {
286 if (AE_NOT_FOUND == Status)
287 {
288 /*
289 * if _STA does not exist, then (as per the ACPI specification),
290 * the returned flags will indicate that the device is present,
291 * functional, and enabled.
292 */
293 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
294 "_STA on %4.4s was not found, assuming device is present\n",
295 AcpiUtGetNodeName (DeviceNode)));
296
297 *Flags = ACPI_UINT32_MAX;
298 Status = AE_OK;
299 }
300
301 return_ACPI_STATUS (Status);
302 }
303
304 /* Extract the status flags */
305
306 *Flags = (UINT32) ObjDesc->Integer.Value;
307
308 /* On exit, we must delete the return object */
309
310 AcpiUtRemoveReference (ObjDesc);
311 return_ACPI_STATUS (Status);
312 }
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