14 * All rights reserved.
15 *
16 * 2. License
17 *
18 * 2.1. This is your license from Intel Corp. under its intellectual property
19 * rights. You may have additional license terms from the party that provided
20 * you this software, covering your right to use that party's intellectual
21 * property rights.
22 *
23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
24 * copy of the source code appearing in this file ("Covered Code") an
25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
26 * base code distributed originally by Intel ("Original Intel Code") to copy,
27 * make derivatives, distribute, use and display any portion of the Covered
28 * Code in any form, with the right to sublicense such rights; and
29 *
30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
31 * license (with the right to sublicense), under only those claims of Intel
32 * patents that are infringed by the Original Intel Code, to make, use, sell,
33 * offer to sell, and import the Covered Code and derivative works thereof
34 * solely to the minimum extent necessary to exercise the above copyright
35 * license, and in no event shall the patent license extend to any additions
36 * to or modifications of the Original Intel Code. No other license or right
37 * is granted directly or by implication, estoppel or otherwise;
38 *
39 * The above copyright and patent license is granted only if the following
40 * conditions are met:
41 *
42 * 3. Conditions
43 *
44 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
45 * Redistribution of source code of any substantial portion of the Covered
46 * Code or modification with rights to further distribute source must include
47 * the above Copyright Notice, the above License, this list of Conditions,
48 * and the following Disclaimer and Export Compliance provision. In addition,
49 * Licensee must cause all Covered Code to which Licensee contributes to
50 * contain a file documenting the changes Licensee made to create that Covered
51 * Code and the date of any change. Licensee must include in that file the
52 * documentation of any changes made by any predecessor Licensee. Licensee
53 * must include a prominent statement that the modification is derived,
54 * directly or indirectly, from Original Intel Code.
55 *
56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
57 * Redistribution of source code of any substantial portion of the Covered
58 * Code or modification without rights to further distribute source must
59 * include the following Disclaimer and Export Compliance provision in the
60 * documentation and/or other materials provided with distribution. In
61 * addition, Licensee may not authorize further sublicense of source of any
62 * portion of the Covered Code, and must include terms to the effect that the
63 * license from Licensee to its licensee is limited to the intellectual
64 * property embodied in the software Licensee provides to its licensee, and
65 * not to intellectual property embodied in modifications its licensee may
66 * make.
67 *
68 * 3.3. Redistribution of Executable. Redistribution in executable form of any
69 * substantial portion of the Covered Code or modification must reproduce the
70 * above Copyright Notice, and the following Disclaimer and Export Compliance
71 * provision in the documentation and/or other materials provided with the
72 * distribution.
73 *
74 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * Intel Code.
76 *
77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
78 * Intel shall be used in advertising or otherwise to promote the sale, use or
79 * other dealings in products derived from or relating to the Covered Code
80 * without prior written authorization from Intel.
81 *
82 * 4. Disclaimer and Export Compliance
83 *
84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
90 * PARTICULAR PURPOSE.
91 *
92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
99 * LIMITED REMEDY.
100 *
101 * 4.3. Licensee shall not export, either directly or indirectly, any of this
102 * software or system incorporating such software without first obtaining any
103 * required license or other approval from the U. S. Department of Commerce or
104 * any other agency or department of the United States Government. In the
105 * event Licensee exports any such software from the United States or
106 * re-exports any such software from a foreign destination, Licensee shall
107 * ensure that the distribution and export/re-export of the software is in
108 * compliance with all laws, regulations, orders, or other restrictions of the
109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
110 * any of its subsidiaries will export/re-export any technical data, process,
111 * software, or service, directly or indirectly, to any country for which the
112 * United States government or any agency thereof requires an export license,
113 * other governmental approval, or letter of assurance, without first obtaining
114 * such license, approval or letter.
115 *
116 *****************************************************************************/
117
118#define __NSXFNAME_C__
119
120#include "acpi.h"
121#include "acnamesp.h"
122
123
124#define _COMPONENT ACPI_NAMESPACE
125 ACPI_MODULE_NAME ("nsxfname")
126
127
128/******************************************************************************
129 *
130 * FUNCTION: AcpiGetHandle
131 *
132 * PARAMETERS: Parent - Object to search under (search scope).
133 * PathName - Pointer to an asciiz string containing the
134 * name
135 * RetHandle - Where the return handle is placed
136 *
137 * RETURN: Status
138 *
139 * DESCRIPTION: This routine will search for a caller specified name in the
140 * name space. The caller can restrict the search region by
141 * specifying a non NULL parent. The parent value is itself a
142 * namespace handle.
143 *
144 ******************************************************************************/
145
146ACPI_STATUS
147AcpiGetHandle (
148 ACPI_HANDLE Parent,
149 ACPI_STRING Pathname,
150 ACPI_HANDLE *RetHandle)
151{
152 ACPI_STATUS Status;
153 ACPI_NAMESPACE_NODE *Node = NULL;
154 ACPI_NAMESPACE_NODE *PrefixNode = NULL;
155
156
157 ACPI_FUNCTION_ENTRY ();
158
159
160 /* Parameter Validation */
161
162 if (!RetHandle || !Pathname)
163 {
164 return (AE_BAD_PARAMETER);
165 }
166
167 /* Convert a parent handle to a prefix node */
168
169 if (Parent)
170 {
171 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
172 if (ACPI_FAILURE (Status))
173 {
174 return (Status);
175 }
176
177 PrefixNode = AcpiNsMapHandleToNode (Parent);
178 if (!PrefixNode)
179 {
180 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
181 return (AE_BAD_PARAMETER);
182 }
183
184 Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
185 if (ACPI_FAILURE (Status))
186 {
187 return (Status);
188 }
189 }
190
191 /* Special case for root, since we can't search for it */
192
193 if (ACPI_STRCMP (Pathname, ACPI_NS_ROOT_PATH) == 0)
194 {
195 *RetHandle = AcpiNsConvertEntryToHandle (AcpiGbl_RootNode);
196 return (AE_OK);
197 }
198
199 /*
200 * Find the Node and convert to a handle
201 */
202 Status = AcpiNsGetNodeByPath (Pathname, PrefixNode, ACPI_NS_NO_UPSEARCH,
203 &Node);
204
205 *RetHandle = NULL;
206 if (ACPI_SUCCESS (Status))
207 {
208 *RetHandle = AcpiNsConvertEntryToHandle (Node);
209 }
210
211 return (Status);
212}
213
214
215/******************************************************************************
216 *
217 * FUNCTION: AcpiGetName
218 *
219 * PARAMETERS: Handle - Handle to be converted to a pathname
220 * NameType - Full pathname or single segment
221 * Buffer - Buffer for returned path
222 *
223 * RETURN: Pointer to a string containing the fully qualified Name.
224 *
225 * DESCRIPTION: This routine returns the fully qualified name associated with
226 * the Handle parameter. This and the AcpiPathnameToHandle are
227 * complementary functions.
228 *
229 ******************************************************************************/
230
231ACPI_STATUS
232AcpiGetName (
233 ACPI_HANDLE Handle,
234 UINT32 NameType,
235 ACPI_BUFFER *Buffer)
236{
237 ACPI_STATUS Status;
238 ACPI_NAMESPACE_NODE *Node;
239
240
241 /* Parameter validation */
242
243 if (NameType > ACPI_NAME_TYPE_MAX)
244 {
245 return (AE_BAD_PARAMETER);
246 }
247
248 Status = AcpiUtValidateBuffer (Buffer);
249 if (ACPI_FAILURE (Status))
250 {
251 return (Status);
252 }
253
254 if (NameType == ACPI_FULL_PATHNAME)
255 {
256 /* Get the full pathname (From the namespace root) */
257
258 Status = AcpiNsHandleToPathname (Handle, Buffer);
259 return (Status);
260 }
261
262 /*
263 * Wants the single segment ACPI name.
264 * Validate handle and convert to a namespace Node
265 */
266 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
267 if (ACPI_FAILURE (Status))
268 {
269 return (Status);
270 }
271
272 Node = AcpiNsMapHandleToNode (Handle);
273 if (!Node)
274 {
275 Status = AE_BAD_PARAMETER;
276 goto UnlockAndExit;
277 }
278
279 /* Validate/Allocate/Clear caller buffer */
280
281 Status = AcpiUtInitializeBuffer (Buffer, ACPI_PATH_SEGMENT_LENGTH);
282 if (ACPI_FAILURE (Status))
283 {
284 goto UnlockAndExit;
285 }
286
287 /* Just copy the ACPI name from the Node and zero terminate it */
288
289 ACPI_STRNCPY (Buffer->Pointer, AcpiUtGetNodeName (Node),
290 ACPI_NAME_SIZE);
291 ((char *) Buffer->Pointer) [ACPI_NAME_SIZE] = 0;
292 Status = AE_OK;
293
294
295UnlockAndExit:
296
297 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
298 return (Status);
299}
300
301
302/******************************************************************************
303 *
304 * FUNCTION: AcpiGetObjectInfo
305 *
306 * PARAMETERS: Handle - Object Handle
307 * Info - Where the info is returned
308 *
309 * RETURN: Status
310 *
311 * DESCRIPTION: Returns information about an object as gleaned from the
312 * namespace node and possibly by running several standard
313 * control methods (Such as in the case of a device.)
314 *
315 ******************************************************************************/
316
317ACPI_STATUS
318AcpiGetObjectInfo (
319 ACPI_HANDLE Handle,
320 ACPI_BUFFER *Buffer)
321{
322 ACPI_STATUS Status;
323 ACPI_NAMESPACE_NODE *Node;
324 ACPI_DEVICE_INFO Info;
325 ACPI_DEVICE_INFO *ReturnInfo;
326 ACPI_COMPATIBLE_ID_LIST *CidList = NULL;
327 ACPI_SIZE Size;
328
329
330 /* Parameter validation */
331
332 if (!Handle || !Buffer)
333 {
334 return (AE_BAD_PARAMETER);
335 }
336
337 Status = AcpiUtValidateBuffer (Buffer);
338 if (ACPI_FAILURE (Status))
339 {
340 return (Status);
341 }
342
343 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
344 if (ACPI_FAILURE (Status))
345 {
346 return (Status);
347 }
348
349 Node = AcpiNsMapHandleToNode (Handle);
350 if (!Node)
351 {
352 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
353 return (AE_BAD_PARAMETER);
354 }
355
356 /* Init return structure */
357
358 Size = sizeof (ACPI_DEVICE_INFO);
359 ACPI_MEMSET (&Info, 0, Size);
360
361 Info.Type = Node->Type;
362 Info.Name = Node->Name.Integer;
363 Info.Valid = 0;
364
365 Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
366 if (ACPI_FAILURE (Status))
367 {
368 return (Status);
369 }
370
371 /* If not a device, we are all done */
372
373 if (Info.Type == ACPI_TYPE_DEVICE)
374 {
375 /*
376 * Get extra info for ACPI Devices objects only:
377 * Run the Device _HID, _UID, _CID, _STA, and _ADR methods.
378 *
379 * Note: none of these methods are required, so they may or may
380 * not be present for this device. The Info.Valid bitfield is used
381 * to indicate which methods were found and ran successfully.
382 */
383
384 /* Execute the Device._HID method */
385
386 Status = AcpiUtExecute_HID (Node, &Info.HardwareId);
387 if (ACPI_SUCCESS (Status))
388 {
389 Info.Valid |= ACPI_VALID_HID;
390 }
391
392 /* Execute the Device._UID method */
393
394 Status = AcpiUtExecute_UID (Node, &Info.UniqueId);
395 if (ACPI_SUCCESS (Status))
396 {
397 Info.Valid |= ACPI_VALID_UID;
398 }
399
400 /* Execute the Device._CID method */
401
402 Status = AcpiUtExecute_CID (Node, &CidList);
403 if (ACPI_SUCCESS (Status))
404 {
405 Size += ((ACPI_SIZE) CidList->Count - 1) *
406 sizeof (ACPI_COMPATIBLE_ID);
407 Info.Valid |= ACPI_VALID_CID;
408 }
409
410 /* Execute the Device._STA method */
411
412 Status = AcpiUtExecute_STA (Node, &Info.CurrentStatus);
413 if (ACPI_SUCCESS (Status))
414 {
415 Info.Valid |= ACPI_VALID_STA;
416 }
417
418 /* Execute the Device._ADR method */
419
420 Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR, Node,
421 &Info.Address);
422 if (ACPI_SUCCESS (Status))
423 {
424 Info.Valid |= ACPI_VALID_ADR;
425 }
426
| 14 * All rights reserved.
15 *
16 * 2. License
17 *
18 * 2.1. This is your license from Intel Corp. under its intellectual property
19 * rights. You may have additional license terms from the party that provided
20 * you this software, covering your right to use that party's intellectual
21 * property rights.
22 *
23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
24 * copy of the source code appearing in this file ("Covered Code") an
25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
26 * base code distributed originally by Intel ("Original Intel Code") to copy,
27 * make derivatives, distribute, use and display any portion of the Covered
28 * Code in any form, with the right to sublicense such rights; and
29 *
30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
31 * license (with the right to sublicense), under only those claims of Intel
32 * patents that are infringed by the Original Intel Code, to make, use, sell,
33 * offer to sell, and import the Covered Code and derivative works thereof
34 * solely to the minimum extent necessary to exercise the above copyright
35 * license, and in no event shall the patent license extend to any additions
36 * to or modifications of the Original Intel Code. No other license or right
37 * is granted directly or by implication, estoppel or otherwise;
38 *
39 * The above copyright and patent license is granted only if the following
40 * conditions are met:
41 *
42 * 3. Conditions
43 *
44 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
45 * Redistribution of source code of any substantial portion of the Covered
46 * Code or modification with rights to further distribute source must include
47 * the above Copyright Notice, the above License, this list of Conditions,
48 * and the following Disclaimer and Export Compliance provision. In addition,
49 * Licensee must cause all Covered Code to which Licensee contributes to
50 * contain a file documenting the changes Licensee made to create that Covered
51 * Code and the date of any change. Licensee must include in that file the
52 * documentation of any changes made by any predecessor Licensee. Licensee
53 * must include a prominent statement that the modification is derived,
54 * directly or indirectly, from Original Intel Code.
55 *
56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
57 * Redistribution of source code of any substantial portion of the Covered
58 * Code or modification without rights to further distribute source must
59 * include the following Disclaimer and Export Compliance provision in the
60 * documentation and/or other materials provided with distribution. In
61 * addition, Licensee may not authorize further sublicense of source of any
62 * portion of the Covered Code, and must include terms to the effect that the
63 * license from Licensee to its licensee is limited to the intellectual
64 * property embodied in the software Licensee provides to its licensee, and
65 * not to intellectual property embodied in modifications its licensee may
66 * make.
67 *
68 * 3.3. Redistribution of Executable. Redistribution in executable form of any
69 * substantial portion of the Covered Code or modification must reproduce the
70 * above Copyright Notice, and the following Disclaimer and Export Compliance
71 * provision in the documentation and/or other materials provided with the
72 * distribution.
73 *
74 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * Intel Code.
76 *
77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
78 * Intel shall be used in advertising or otherwise to promote the sale, use or
79 * other dealings in products derived from or relating to the Covered Code
80 * without prior written authorization from Intel.
81 *
82 * 4. Disclaimer and Export Compliance
83 *
84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
90 * PARTICULAR PURPOSE.
91 *
92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
99 * LIMITED REMEDY.
100 *
101 * 4.3. Licensee shall not export, either directly or indirectly, any of this
102 * software or system incorporating such software without first obtaining any
103 * required license or other approval from the U. S. Department of Commerce or
104 * any other agency or department of the United States Government. In the
105 * event Licensee exports any such software from the United States or
106 * re-exports any such software from a foreign destination, Licensee shall
107 * ensure that the distribution and export/re-export of the software is in
108 * compliance with all laws, regulations, orders, or other restrictions of the
109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
110 * any of its subsidiaries will export/re-export any technical data, process,
111 * software, or service, directly or indirectly, to any country for which the
112 * United States government or any agency thereof requires an export license,
113 * other governmental approval, or letter of assurance, without first obtaining
114 * such license, approval or letter.
115 *
116 *****************************************************************************/
117
118#define __NSXFNAME_C__
119
120#include "acpi.h"
121#include "acnamesp.h"
122
123
124#define _COMPONENT ACPI_NAMESPACE
125 ACPI_MODULE_NAME ("nsxfname")
126
127
128/******************************************************************************
129 *
130 * FUNCTION: AcpiGetHandle
131 *
132 * PARAMETERS: Parent - Object to search under (search scope).
133 * PathName - Pointer to an asciiz string containing the
134 * name
135 * RetHandle - Where the return handle is placed
136 *
137 * RETURN: Status
138 *
139 * DESCRIPTION: This routine will search for a caller specified name in the
140 * name space. The caller can restrict the search region by
141 * specifying a non NULL parent. The parent value is itself a
142 * namespace handle.
143 *
144 ******************************************************************************/
145
146ACPI_STATUS
147AcpiGetHandle (
148 ACPI_HANDLE Parent,
149 ACPI_STRING Pathname,
150 ACPI_HANDLE *RetHandle)
151{
152 ACPI_STATUS Status;
153 ACPI_NAMESPACE_NODE *Node = NULL;
154 ACPI_NAMESPACE_NODE *PrefixNode = NULL;
155
156
157 ACPI_FUNCTION_ENTRY ();
158
159
160 /* Parameter Validation */
161
162 if (!RetHandle || !Pathname)
163 {
164 return (AE_BAD_PARAMETER);
165 }
166
167 /* Convert a parent handle to a prefix node */
168
169 if (Parent)
170 {
171 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
172 if (ACPI_FAILURE (Status))
173 {
174 return (Status);
175 }
176
177 PrefixNode = AcpiNsMapHandleToNode (Parent);
178 if (!PrefixNode)
179 {
180 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
181 return (AE_BAD_PARAMETER);
182 }
183
184 Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
185 if (ACPI_FAILURE (Status))
186 {
187 return (Status);
188 }
189 }
190
191 /* Special case for root, since we can't search for it */
192
193 if (ACPI_STRCMP (Pathname, ACPI_NS_ROOT_PATH) == 0)
194 {
195 *RetHandle = AcpiNsConvertEntryToHandle (AcpiGbl_RootNode);
196 return (AE_OK);
197 }
198
199 /*
200 * Find the Node and convert to a handle
201 */
202 Status = AcpiNsGetNodeByPath (Pathname, PrefixNode, ACPI_NS_NO_UPSEARCH,
203 &Node);
204
205 *RetHandle = NULL;
206 if (ACPI_SUCCESS (Status))
207 {
208 *RetHandle = AcpiNsConvertEntryToHandle (Node);
209 }
210
211 return (Status);
212}
213
214
215/******************************************************************************
216 *
217 * FUNCTION: AcpiGetName
218 *
219 * PARAMETERS: Handle - Handle to be converted to a pathname
220 * NameType - Full pathname or single segment
221 * Buffer - Buffer for returned path
222 *
223 * RETURN: Pointer to a string containing the fully qualified Name.
224 *
225 * DESCRIPTION: This routine returns the fully qualified name associated with
226 * the Handle parameter. This and the AcpiPathnameToHandle are
227 * complementary functions.
228 *
229 ******************************************************************************/
230
231ACPI_STATUS
232AcpiGetName (
233 ACPI_HANDLE Handle,
234 UINT32 NameType,
235 ACPI_BUFFER *Buffer)
236{
237 ACPI_STATUS Status;
238 ACPI_NAMESPACE_NODE *Node;
239
240
241 /* Parameter validation */
242
243 if (NameType > ACPI_NAME_TYPE_MAX)
244 {
245 return (AE_BAD_PARAMETER);
246 }
247
248 Status = AcpiUtValidateBuffer (Buffer);
249 if (ACPI_FAILURE (Status))
250 {
251 return (Status);
252 }
253
254 if (NameType == ACPI_FULL_PATHNAME)
255 {
256 /* Get the full pathname (From the namespace root) */
257
258 Status = AcpiNsHandleToPathname (Handle, Buffer);
259 return (Status);
260 }
261
262 /*
263 * Wants the single segment ACPI name.
264 * Validate handle and convert to a namespace Node
265 */
266 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
267 if (ACPI_FAILURE (Status))
268 {
269 return (Status);
270 }
271
272 Node = AcpiNsMapHandleToNode (Handle);
273 if (!Node)
274 {
275 Status = AE_BAD_PARAMETER;
276 goto UnlockAndExit;
277 }
278
279 /* Validate/Allocate/Clear caller buffer */
280
281 Status = AcpiUtInitializeBuffer (Buffer, ACPI_PATH_SEGMENT_LENGTH);
282 if (ACPI_FAILURE (Status))
283 {
284 goto UnlockAndExit;
285 }
286
287 /* Just copy the ACPI name from the Node and zero terminate it */
288
289 ACPI_STRNCPY (Buffer->Pointer, AcpiUtGetNodeName (Node),
290 ACPI_NAME_SIZE);
291 ((char *) Buffer->Pointer) [ACPI_NAME_SIZE] = 0;
292 Status = AE_OK;
293
294
295UnlockAndExit:
296
297 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
298 return (Status);
299}
300
301
302/******************************************************************************
303 *
304 * FUNCTION: AcpiGetObjectInfo
305 *
306 * PARAMETERS: Handle - Object Handle
307 * Info - Where the info is returned
308 *
309 * RETURN: Status
310 *
311 * DESCRIPTION: Returns information about an object as gleaned from the
312 * namespace node and possibly by running several standard
313 * control methods (Such as in the case of a device.)
314 *
315 ******************************************************************************/
316
317ACPI_STATUS
318AcpiGetObjectInfo (
319 ACPI_HANDLE Handle,
320 ACPI_BUFFER *Buffer)
321{
322 ACPI_STATUS Status;
323 ACPI_NAMESPACE_NODE *Node;
324 ACPI_DEVICE_INFO Info;
325 ACPI_DEVICE_INFO *ReturnInfo;
326 ACPI_COMPATIBLE_ID_LIST *CidList = NULL;
327 ACPI_SIZE Size;
328
329
330 /* Parameter validation */
331
332 if (!Handle || !Buffer)
333 {
334 return (AE_BAD_PARAMETER);
335 }
336
337 Status = AcpiUtValidateBuffer (Buffer);
338 if (ACPI_FAILURE (Status))
339 {
340 return (Status);
341 }
342
343 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
344 if (ACPI_FAILURE (Status))
345 {
346 return (Status);
347 }
348
349 Node = AcpiNsMapHandleToNode (Handle);
350 if (!Node)
351 {
352 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
353 return (AE_BAD_PARAMETER);
354 }
355
356 /* Init return structure */
357
358 Size = sizeof (ACPI_DEVICE_INFO);
359 ACPI_MEMSET (&Info, 0, Size);
360
361 Info.Type = Node->Type;
362 Info.Name = Node->Name.Integer;
363 Info.Valid = 0;
364
365 Status = AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
366 if (ACPI_FAILURE (Status))
367 {
368 return (Status);
369 }
370
371 /* If not a device, we are all done */
372
373 if (Info.Type == ACPI_TYPE_DEVICE)
374 {
375 /*
376 * Get extra info for ACPI Devices objects only:
377 * Run the Device _HID, _UID, _CID, _STA, and _ADR methods.
378 *
379 * Note: none of these methods are required, so they may or may
380 * not be present for this device. The Info.Valid bitfield is used
381 * to indicate which methods were found and ran successfully.
382 */
383
384 /* Execute the Device._HID method */
385
386 Status = AcpiUtExecute_HID (Node, &Info.HardwareId);
387 if (ACPI_SUCCESS (Status))
388 {
389 Info.Valid |= ACPI_VALID_HID;
390 }
391
392 /* Execute the Device._UID method */
393
394 Status = AcpiUtExecute_UID (Node, &Info.UniqueId);
395 if (ACPI_SUCCESS (Status))
396 {
397 Info.Valid |= ACPI_VALID_UID;
398 }
399
400 /* Execute the Device._CID method */
401
402 Status = AcpiUtExecute_CID (Node, &CidList);
403 if (ACPI_SUCCESS (Status))
404 {
405 Size += ((ACPI_SIZE) CidList->Count - 1) *
406 sizeof (ACPI_COMPATIBLE_ID);
407 Info.Valid |= ACPI_VALID_CID;
408 }
409
410 /* Execute the Device._STA method */
411
412 Status = AcpiUtExecute_STA (Node, &Info.CurrentStatus);
413 if (ACPI_SUCCESS (Status))
414 {
415 Info.Valid |= ACPI_VALID_STA;
416 }
417
418 /* Execute the Device._ADR method */
419
420 Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR, Node,
421 &Info.Address);
422 if (ACPI_SUCCESS (Status))
423 {
424 Info.Valid |= ACPI_VALID_ADR;
425 }
426
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