13 * All rights reserved.
14 *
15 * 2. License
16 *
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
20 * property rights.
21 *
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
28 *
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
54 *
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
65 * make.
66 *
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87
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 __EXCONFIG_C__
119
120#include "acpi.h"
121#include "acinterp.h"
122#include "amlcode.h"
123#include "acnamesp.h"
124#include "acevents.h"
125#include "actables.h"
126
127
128#define _COMPONENT ACPI_EXECUTER
129 ACPI_MODULE_NAME ("exconfig")
130
131
132/*******************************************************************************
133 *
134 * FUNCTION: AcpiExAddTable
135 *
136 * PARAMETERS: Table - Pointer to raw table
137 * ParentNode - Where to load the table (scope)
138 * DdbHandle - Where to return the table handle.
139 *
140 * RETURN: Status
141 *
142 * DESCRIPTION: Common function to Install and Load an ACPI table with a
143 * returned table handle.
144 *
145 ******************************************************************************/
146
147ACPI_STATUS
148AcpiExAddTable (
149 ACPI_TABLE_HEADER *Table,
150 ACPI_NAMESPACE_NODE *ParentNode,
151 ACPI_OPERAND_OBJECT **DdbHandle)
152{
153 ACPI_STATUS Status;
154 ACPI_TABLE_DESC TableInfo;
155 ACPI_OPERAND_OBJECT *ObjDesc;
156
157
158 ACPI_FUNCTION_TRACE ("ExAddTable");
159
160
161 /* Create an object to be the table handle */
162
163 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
164 if (!ObjDesc)
165 {
166 return_ACPI_STATUS (AE_NO_MEMORY);
167 }
168
169 /* Install the new table into the local data structures */
170
171 ACPI_MEMSET (&TableInfo, 0, sizeof (ACPI_TABLE_DESC));
172
173 TableInfo.Type = 5;
174 TableInfo.Pointer = Table;
175 TableInfo.Length = (ACPI_SIZE) Table->Length;
176 TableInfo.Allocation = ACPI_MEM_ALLOCATED;
177
178 Status = AcpiTbInstallTable (&TableInfo);
179 if (ACPI_FAILURE (Status))
180 {
181 goto Cleanup;
182 }
183
184 /* Add the table to the namespace */
185
186 Status = AcpiNsLoadTable (TableInfo.InstalledDesc, ParentNode);
187 if (ACPI_FAILURE (Status))
188 {
189 /* Uninstall table on error */
190
191 (void) AcpiTbUninstallTable (TableInfo.InstalledDesc);
192 goto Cleanup;
193 }
194
195 /* Init the table handle */
196
197 ObjDesc->Reference.Opcode = AML_LOAD_OP;
198 ObjDesc->Reference.Object = TableInfo.InstalledDesc;
199 *DdbHandle = ObjDesc;
200 return_ACPI_STATUS (AE_OK);
201
202
203Cleanup:
204 AcpiUtRemoveReference (ObjDesc);
205 return_ACPI_STATUS (Status);
206}
207
208
209/*******************************************************************************
210 *
211 * FUNCTION: AcpiExLoadTableOp
212 *
213 * PARAMETERS: WalkState - Current state with operands
214 * ReturnDesc - Where to store the return object
215 *
216 * RETURN: Status
217 *
218 * DESCRIPTION: Load an ACPI table
219 *
220 ******************************************************************************/
221
222ACPI_STATUS
223AcpiExLoadTableOp (
224 ACPI_WALK_STATE *WalkState,
225 ACPI_OPERAND_OBJECT **ReturnDesc)
226{
227 ACPI_STATUS Status;
228 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
229 ACPI_TABLE_HEADER *Table;
230 ACPI_NAMESPACE_NODE *ParentNode;
231 ACPI_NAMESPACE_NODE *StartNode;
232 ACPI_NAMESPACE_NODE *ParameterNode = NULL;
233 ACPI_OPERAND_OBJECT *DdbHandle;
234
235
236 ACPI_FUNCTION_TRACE ("ExLoadTableOp");
237
238
239#if 0
240 /*
241 * Make sure that the signature does not match one of the tables that
242 * is already loaded.
243 */
244 Status = AcpiTbMatchSignature (Operand[0]->String.Pointer, NULL);
245 if (Status == AE_OK)
246 {
247 /* Signature matched -- don't allow override */
248
249 return_ACPI_STATUS (AE_ALREADY_EXISTS);
250 }
251#endif
252
253 /* Find the ACPI table */
254
255 Status = AcpiTbFindTable (Operand[0]->String.Pointer,
256 Operand[1]->String.Pointer,
257 Operand[2]->String.Pointer, &Table);
258 if (ACPI_FAILURE (Status))
259 {
260 if (Status != AE_NOT_FOUND)
261 {
262 return_ACPI_STATUS (Status);
263 }
264
265 /* Table not found, return an Integer=0 and AE_OK */
266
267 DdbHandle = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
268 if (!DdbHandle)
269 {
270 return_ACPI_STATUS (AE_NO_MEMORY);
271 }
272
273 DdbHandle->Integer.Value = 0;
274 *ReturnDesc = DdbHandle;
275
276 return_ACPI_STATUS (AE_OK);
277 }
278
279 /* Default nodes */
280
281 StartNode = WalkState->ScopeInfo->Scope.Node;
282 ParentNode = AcpiGbl_RootNode;
283
284 /* RootPath (optional parameter) */
285
286 if (Operand[3]->String.Length > 0)
287 {
288 /*
289 * Find the node referenced by the RootPathString. This is the
290 * location within the namespace where the table will be loaded.
291 */
292 Status = AcpiNsGetNodeByPath (Operand[3]->String.Pointer, StartNode,
293 ACPI_NS_SEARCH_PARENT, &ParentNode);
294 if (ACPI_FAILURE (Status))
295 {
296 return_ACPI_STATUS (Status);
297 }
298 }
299
300 /* ParameterPath (optional parameter) */
301
302 if (Operand[4]->String.Length > 0)
303 {
304 if ((Operand[4]->String.Pointer[0] != '\\') &&
305 (Operand[4]->String.Pointer[0] != '^'))
306 {
307 /*
308 * Path is not absolute, so it will be relative to the node
309 * referenced by the RootPathString (or the NS root if omitted)
310 */
311 StartNode = ParentNode;
312 }
313
314 /*
315 * Find the node referenced by the ParameterPathString
316 */
317 Status = AcpiNsGetNodeByPath (Operand[4]->String.Pointer, StartNode,
318 ACPI_NS_SEARCH_PARENT, &ParameterNode);
319 if (ACPI_FAILURE (Status))
320 {
321 return_ACPI_STATUS (Status);
322 }
323 }
324
325 /* Load the table into the namespace */
326
327 Status = AcpiExAddTable (Table, ParentNode, &DdbHandle);
328 if (ACPI_FAILURE (Status))
329 {
330 return_ACPI_STATUS (Status);
331 }
332
333 /* Parameter Data (optional) */
334
335 if (ParameterNode)
336 {
337 /* Store the parameter data into the optional parameter object */
338
339 Status = AcpiExStore (Operand[5], ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, ParameterNode),
340 WalkState);
341 if (ACPI_FAILURE (Status))
342 {
343 (void) AcpiExUnloadTable (DdbHandle);
344 return_ACPI_STATUS (Status);
345 }
346 }
347
348 *ReturnDesc = DdbHandle;
349 return_ACPI_STATUS (Status);
350}
351
352
353/*******************************************************************************
354 *
355 * FUNCTION: AcpiExLoadOp
356 *
357 * PARAMETERS: ObjDesc - Region or Field where the table will be
358 * obtained
359 * Target - Where a handle to the table will be stored
360 * WalkState - Current state
361 *
362 * RETURN: Status
363 *
364 * DESCRIPTION: Load an ACPI table from a field or operation region
365 *
366 ******************************************************************************/
367
368ACPI_STATUS
369AcpiExLoadOp (
370 ACPI_OPERAND_OBJECT *ObjDesc,
371 ACPI_OPERAND_OBJECT *Target,
372 ACPI_WALK_STATE *WalkState)
373{
374 ACPI_STATUS Status;
375 ACPI_OPERAND_OBJECT *DdbHandle;
376 ACPI_OPERAND_OBJECT *BufferDesc = NULL;
377 ACPI_TABLE_HEADER *TablePtr = NULL;
378 UINT8 *TableDataPtr;
379 ACPI_TABLE_HEADER TableHeader;
380 UINT32 i;
381
382 ACPI_FUNCTION_TRACE ("ExLoadOp");
383
384
385 /* Object can be either an OpRegion or a Field */
386
387 switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
388 {
389 case ACPI_TYPE_REGION:
390
391 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Region %p %s\n",
392 ObjDesc, AcpiUtGetObjectTypeName (ObjDesc)));
393
394 /* Get the table header */
395
396 TableHeader.Length = 0;
397 for (i = 0; i < sizeof (ACPI_TABLE_HEADER); i++)
398 {
399 Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ,
400 (ACPI_PHYSICAL_ADDRESS) i, 8,
401 ((UINT8 *) &TableHeader) + i);
402 if (ACPI_FAILURE (Status))
403 {
404 return_ACPI_STATUS (Status);
405 }
406 }
407
408 /* Allocate a buffer for the entire table */
409
410 TablePtr = ACPI_MEM_ALLOCATE (TableHeader.Length);
411 if (!TablePtr)
412 {
413 return_ACPI_STATUS (AE_NO_MEMORY);
414 }
415
416 /* Copy the header to the buffer */
417
418 ACPI_MEMCPY (TablePtr, &TableHeader, sizeof (ACPI_TABLE_HEADER));
419 TableDataPtr = ACPI_PTR_ADD (UINT8, TablePtr, sizeof (ACPI_TABLE_HEADER));
420
421 /* Get the table from the op region */
422
423 for (i = 0; i < TableHeader.Length; i++)
424 {
425 Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ,
426 (ACPI_PHYSICAL_ADDRESS) i, 8,
427 ((UINT8 *) TableDataPtr + i));
428 if (ACPI_FAILURE (Status))
429 {
430 goto Cleanup;
431 }
432 }
433 break;
434
435
436 case ACPI_TYPE_LOCAL_REGION_FIELD:
437 case ACPI_TYPE_LOCAL_BANK_FIELD:
438 case ACPI_TYPE_LOCAL_INDEX_FIELD:
439
440 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Field %p %s\n",
441 ObjDesc, AcpiUtGetObjectTypeName (ObjDesc)));
442
443 /*
444 * The length of the field must be at least as large as the table.
445 * Read the entire field and thus the entire table. Buffer is
446 * allocated during the read.
447 */
448 Status = AcpiExReadDataFromField (WalkState, ObjDesc, &BufferDesc);
449 if (ACPI_FAILURE (Status))
450 {
451 goto Cleanup;
452 }
453
454 TablePtr = ACPI_CAST_PTR (ACPI_TABLE_HEADER, BufferDesc->Buffer.Pointer);
455 break;
456
457
458 default:
459 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
460 }
461
462 /* The table must be either an SSDT or a PSDT */
463
464 if ((!ACPI_STRNCMP (TablePtr->Signature,
465 AcpiGbl_TableData[ACPI_TABLE_PSDT].Signature,
466 AcpiGbl_TableData[ACPI_TABLE_PSDT].SigLength)) &&
467 (!ACPI_STRNCMP (TablePtr->Signature,
468 AcpiGbl_TableData[ACPI_TABLE_SSDT].Signature,
469 AcpiGbl_TableData[ACPI_TABLE_SSDT].SigLength)))
470 {
471 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
472 "Table has invalid signature [%4.4s], must be SSDT or PSDT\n",
473 TablePtr->Signature));
474 Status = AE_BAD_SIGNATURE;
475 goto Cleanup;
476 }
477
478 /* Install the new table into the local data structures */
479
480 Status = AcpiExAddTable (TablePtr, AcpiGbl_RootNode, &DdbHandle);
481 if (ACPI_FAILURE (Status))
482 {
483 goto Cleanup;
484 }
485
486 /* Store the DdbHandle into the Target operand */
487
488 Status = AcpiExStore (DdbHandle, Target, WalkState);
489 if (ACPI_FAILURE (Status))
490 {
491 (void) AcpiExUnloadTable (DdbHandle);
492 }
493
494 return_ACPI_STATUS (Status);
495
496
497Cleanup:
498
499 if (BufferDesc)
500 {
501 AcpiUtRemoveReference (BufferDesc);
502 }
503 else
504 {
505 ACPI_MEM_FREE (TablePtr);
506 }
507 return_ACPI_STATUS (Status);
508}
509
510
511/*******************************************************************************
512 *
513 * FUNCTION: AcpiExUnloadTable
514 *
515 * PARAMETERS: DdbHandle - Handle to a previously loaded table
516 *
517 * RETURN: Status
518 *
519 * DESCRIPTION: Unload an ACPI table
520 *
521 ******************************************************************************/
522
523ACPI_STATUS
524AcpiExUnloadTable (
525 ACPI_OPERAND_OBJECT *DdbHandle)
526{
527 ACPI_STATUS Status = AE_OK;
528 ACPI_OPERAND_OBJECT *TableDesc = DdbHandle;
529 ACPI_TABLE_DESC *TableInfo;
530
531
532 ACPI_FUNCTION_TRACE ("ExUnloadTable");
533
534
535 /*
536 * Validate the handle
537 * Although the handle is partially validated in AcpiExReconfiguration(),
538 * when it calls AcpiExResolveOperands(), the handle is more completely
539 * validated here.
540 */
541 if ((!DdbHandle) ||
542 (ACPI_GET_DESCRIPTOR_TYPE (DdbHandle) != ACPI_DESC_TYPE_OPERAND) ||
543 (ACPI_GET_OBJECT_TYPE (DdbHandle) != ACPI_TYPE_LOCAL_REFERENCE))
544 {
545 return_ACPI_STATUS (AE_BAD_PARAMETER);
546 }
547
548 /* Get the actual table descriptor from the DdbHandle */
549
550 TableInfo = (ACPI_TABLE_DESC *) TableDesc->Reference.Object;
551
552 /*
553 * Delete the entire namespace under this table Node
554 * (Offset contains the TableId)
555 */
556 AcpiNsDeleteNamespaceByOwner (TableInfo->TableId);
557
558 /* Delete the table itself */
559
560 (void) AcpiTbUninstallTable (TableInfo->InstalledDesc);
561
562 /* Delete the table descriptor (DdbHandle) */
563
564 AcpiUtRemoveReference (TableDesc);
565 return_ACPI_STATUS (Status);
566}
567
| 13 * All rights reserved.
14 *
15 * 2. License
16 *
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights. You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
20 * property rights.
21 *
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
28 *
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code. No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision. In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change. Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee. Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
54 *
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution. In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
65 * make.
66 *
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
87
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 __EXCONFIG_C__
119
120#include "acpi.h"
121#include "acinterp.h"
122#include "amlcode.h"
123#include "acnamesp.h"
124#include "acevents.h"
125#include "actables.h"
126
127
128#define _COMPONENT ACPI_EXECUTER
129 ACPI_MODULE_NAME ("exconfig")
130
131
132/*******************************************************************************
133 *
134 * FUNCTION: AcpiExAddTable
135 *
136 * PARAMETERS: Table - Pointer to raw table
137 * ParentNode - Where to load the table (scope)
138 * DdbHandle - Where to return the table handle.
139 *
140 * RETURN: Status
141 *
142 * DESCRIPTION: Common function to Install and Load an ACPI table with a
143 * returned table handle.
144 *
145 ******************************************************************************/
146
147ACPI_STATUS
148AcpiExAddTable (
149 ACPI_TABLE_HEADER *Table,
150 ACPI_NAMESPACE_NODE *ParentNode,
151 ACPI_OPERAND_OBJECT **DdbHandle)
152{
153 ACPI_STATUS Status;
154 ACPI_TABLE_DESC TableInfo;
155 ACPI_OPERAND_OBJECT *ObjDesc;
156
157
158 ACPI_FUNCTION_TRACE ("ExAddTable");
159
160
161 /* Create an object to be the table handle */
162
163 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
164 if (!ObjDesc)
165 {
166 return_ACPI_STATUS (AE_NO_MEMORY);
167 }
168
169 /* Install the new table into the local data structures */
170
171 ACPI_MEMSET (&TableInfo, 0, sizeof (ACPI_TABLE_DESC));
172
173 TableInfo.Type = 5;
174 TableInfo.Pointer = Table;
175 TableInfo.Length = (ACPI_SIZE) Table->Length;
176 TableInfo.Allocation = ACPI_MEM_ALLOCATED;
177
178 Status = AcpiTbInstallTable (&TableInfo);
179 if (ACPI_FAILURE (Status))
180 {
181 goto Cleanup;
182 }
183
184 /* Add the table to the namespace */
185
186 Status = AcpiNsLoadTable (TableInfo.InstalledDesc, ParentNode);
187 if (ACPI_FAILURE (Status))
188 {
189 /* Uninstall table on error */
190
191 (void) AcpiTbUninstallTable (TableInfo.InstalledDesc);
192 goto Cleanup;
193 }
194
195 /* Init the table handle */
196
197 ObjDesc->Reference.Opcode = AML_LOAD_OP;
198 ObjDesc->Reference.Object = TableInfo.InstalledDesc;
199 *DdbHandle = ObjDesc;
200 return_ACPI_STATUS (AE_OK);
201
202
203Cleanup:
204 AcpiUtRemoveReference (ObjDesc);
205 return_ACPI_STATUS (Status);
206}
207
208
209/*******************************************************************************
210 *
211 * FUNCTION: AcpiExLoadTableOp
212 *
213 * PARAMETERS: WalkState - Current state with operands
214 * ReturnDesc - Where to store the return object
215 *
216 * RETURN: Status
217 *
218 * DESCRIPTION: Load an ACPI table
219 *
220 ******************************************************************************/
221
222ACPI_STATUS
223AcpiExLoadTableOp (
224 ACPI_WALK_STATE *WalkState,
225 ACPI_OPERAND_OBJECT **ReturnDesc)
226{
227 ACPI_STATUS Status;
228 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
229 ACPI_TABLE_HEADER *Table;
230 ACPI_NAMESPACE_NODE *ParentNode;
231 ACPI_NAMESPACE_NODE *StartNode;
232 ACPI_NAMESPACE_NODE *ParameterNode = NULL;
233 ACPI_OPERAND_OBJECT *DdbHandle;
234
235
236 ACPI_FUNCTION_TRACE ("ExLoadTableOp");
237
238
239#if 0
240 /*
241 * Make sure that the signature does not match one of the tables that
242 * is already loaded.
243 */
244 Status = AcpiTbMatchSignature (Operand[0]->String.Pointer, NULL);
245 if (Status == AE_OK)
246 {
247 /* Signature matched -- don't allow override */
248
249 return_ACPI_STATUS (AE_ALREADY_EXISTS);
250 }
251#endif
252
253 /* Find the ACPI table */
254
255 Status = AcpiTbFindTable (Operand[0]->String.Pointer,
256 Operand[1]->String.Pointer,
257 Operand[2]->String.Pointer, &Table);
258 if (ACPI_FAILURE (Status))
259 {
260 if (Status != AE_NOT_FOUND)
261 {
262 return_ACPI_STATUS (Status);
263 }
264
265 /* Table not found, return an Integer=0 and AE_OK */
266
267 DdbHandle = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
268 if (!DdbHandle)
269 {
270 return_ACPI_STATUS (AE_NO_MEMORY);
271 }
272
273 DdbHandle->Integer.Value = 0;
274 *ReturnDesc = DdbHandle;
275
276 return_ACPI_STATUS (AE_OK);
277 }
278
279 /* Default nodes */
280
281 StartNode = WalkState->ScopeInfo->Scope.Node;
282 ParentNode = AcpiGbl_RootNode;
283
284 /* RootPath (optional parameter) */
285
286 if (Operand[3]->String.Length > 0)
287 {
288 /*
289 * Find the node referenced by the RootPathString. This is the
290 * location within the namespace where the table will be loaded.
291 */
292 Status = AcpiNsGetNodeByPath (Operand[3]->String.Pointer, StartNode,
293 ACPI_NS_SEARCH_PARENT, &ParentNode);
294 if (ACPI_FAILURE (Status))
295 {
296 return_ACPI_STATUS (Status);
297 }
298 }
299
300 /* ParameterPath (optional parameter) */
301
302 if (Operand[4]->String.Length > 0)
303 {
304 if ((Operand[4]->String.Pointer[0] != '\\') &&
305 (Operand[4]->String.Pointer[0] != '^'))
306 {
307 /*
308 * Path is not absolute, so it will be relative to the node
309 * referenced by the RootPathString (or the NS root if omitted)
310 */
311 StartNode = ParentNode;
312 }
313
314 /*
315 * Find the node referenced by the ParameterPathString
316 */
317 Status = AcpiNsGetNodeByPath (Operand[4]->String.Pointer, StartNode,
318 ACPI_NS_SEARCH_PARENT, &ParameterNode);
319 if (ACPI_FAILURE (Status))
320 {
321 return_ACPI_STATUS (Status);
322 }
323 }
324
325 /* Load the table into the namespace */
326
327 Status = AcpiExAddTable (Table, ParentNode, &DdbHandle);
328 if (ACPI_FAILURE (Status))
329 {
330 return_ACPI_STATUS (Status);
331 }
332
333 /* Parameter Data (optional) */
334
335 if (ParameterNode)
336 {
337 /* Store the parameter data into the optional parameter object */
338
339 Status = AcpiExStore (Operand[5], ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, ParameterNode),
340 WalkState);
341 if (ACPI_FAILURE (Status))
342 {
343 (void) AcpiExUnloadTable (DdbHandle);
344 return_ACPI_STATUS (Status);
345 }
346 }
347
348 *ReturnDesc = DdbHandle;
349 return_ACPI_STATUS (Status);
350}
351
352
353/*******************************************************************************
354 *
355 * FUNCTION: AcpiExLoadOp
356 *
357 * PARAMETERS: ObjDesc - Region or Field where the table will be
358 * obtained
359 * Target - Where a handle to the table will be stored
360 * WalkState - Current state
361 *
362 * RETURN: Status
363 *
364 * DESCRIPTION: Load an ACPI table from a field or operation region
365 *
366 ******************************************************************************/
367
368ACPI_STATUS
369AcpiExLoadOp (
370 ACPI_OPERAND_OBJECT *ObjDesc,
371 ACPI_OPERAND_OBJECT *Target,
372 ACPI_WALK_STATE *WalkState)
373{
374 ACPI_STATUS Status;
375 ACPI_OPERAND_OBJECT *DdbHandle;
376 ACPI_OPERAND_OBJECT *BufferDesc = NULL;
377 ACPI_TABLE_HEADER *TablePtr = NULL;
378 UINT8 *TableDataPtr;
379 ACPI_TABLE_HEADER TableHeader;
380 UINT32 i;
381
382 ACPI_FUNCTION_TRACE ("ExLoadOp");
383
384
385 /* Object can be either an OpRegion or a Field */
386
387 switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
388 {
389 case ACPI_TYPE_REGION:
390
391 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Region %p %s\n",
392 ObjDesc, AcpiUtGetObjectTypeName (ObjDesc)));
393
394 /* Get the table header */
395
396 TableHeader.Length = 0;
397 for (i = 0; i < sizeof (ACPI_TABLE_HEADER); i++)
398 {
399 Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ,
400 (ACPI_PHYSICAL_ADDRESS) i, 8,
401 ((UINT8 *) &TableHeader) + i);
402 if (ACPI_FAILURE (Status))
403 {
404 return_ACPI_STATUS (Status);
405 }
406 }
407
408 /* Allocate a buffer for the entire table */
409
410 TablePtr = ACPI_MEM_ALLOCATE (TableHeader.Length);
411 if (!TablePtr)
412 {
413 return_ACPI_STATUS (AE_NO_MEMORY);
414 }
415
416 /* Copy the header to the buffer */
417
418 ACPI_MEMCPY (TablePtr, &TableHeader, sizeof (ACPI_TABLE_HEADER));
419 TableDataPtr = ACPI_PTR_ADD (UINT8, TablePtr, sizeof (ACPI_TABLE_HEADER));
420
421 /* Get the table from the op region */
422
423 for (i = 0; i < TableHeader.Length; i++)
424 {
425 Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ,
426 (ACPI_PHYSICAL_ADDRESS) i, 8,
427 ((UINT8 *) TableDataPtr + i));
428 if (ACPI_FAILURE (Status))
429 {
430 goto Cleanup;
431 }
432 }
433 break;
434
435
436 case ACPI_TYPE_LOCAL_REGION_FIELD:
437 case ACPI_TYPE_LOCAL_BANK_FIELD:
438 case ACPI_TYPE_LOCAL_INDEX_FIELD:
439
440 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Field %p %s\n",
441 ObjDesc, AcpiUtGetObjectTypeName (ObjDesc)));
442
443 /*
444 * The length of the field must be at least as large as the table.
445 * Read the entire field and thus the entire table. Buffer is
446 * allocated during the read.
447 */
448 Status = AcpiExReadDataFromField (WalkState, ObjDesc, &BufferDesc);
449 if (ACPI_FAILURE (Status))
450 {
451 goto Cleanup;
452 }
453
454 TablePtr = ACPI_CAST_PTR (ACPI_TABLE_HEADER, BufferDesc->Buffer.Pointer);
455 break;
456
457
458 default:
459 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
460 }
461
462 /* The table must be either an SSDT or a PSDT */
463
464 if ((!ACPI_STRNCMP (TablePtr->Signature,
465 AcpiGbl_TableData[ACPI_TABLE_PSDT].Signature,
466 AcpiGbl_TableData[ACPI_TABLE_PSDT].SigLength)) &&
467 (!ACPI_STRNCMP (TablePtr->Signature,
468 AcpiGbl_TableData[ACPI_TABLE_SSDT].Signature,
469 AcpiGbl_TableData[ACPI_TABLE_SSDT].SigLength)))
470 {
471 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
472 "Table has invalid signature [%4.4s], must be SSDT or PSDT\n",
473 TablePtr->Signature));
474 Status = AE_BAD_SIGNATURE;
475 goto Cleanup;
476 }
477
478 /* Install the new table into the local data structures */
479
480 Status = AcpiExAddTable (TablePtr, AcpiGbl_RootNode, &DdbHandle);
481 if (ACPI_FAILURE (Status))
482 {
483 goto Cleanup;
484 }
485
486 /* Store the DdbHandle into the Target operand */
487
488 Status = AcpiExStore (DdbHandle, Target, WalkState);
489 if (ACPI_FAILURE (Status))
490 {
491 (void) AcpiExUnloadTable (DdbHandle);
492 }
493
494 return_ACPI_STATUS (Status);
495
496
497Cleanup:
498
499 if (BufferDesc)
500 {
501 AcpiUtRemoveReference (BufferDesc);
502 }
503 else
504 {
505 ACPI_MEM_FREE (TablePtr);
506 }
507 return_ACPI_STATUS (Status);
508}
509
510
511/*******************************************************************************
512 *
513 * FUNCTION: AcpiExUnloadTable
514 *
515 * PARAMETERS: DdbHandle - Handle to a previously loaded table
516 *
517 * RETURN: Status
518 *
519 * DESCRIPTION: Unload an ACPI table
520 *
521 ******************************************************************************/
522
523ACPI_STATUS
524AcpiExUnloadTable (
525 ACPI_OPERAND_OBJECT *DdbHandle)
526{
527 ACPI_STATUS Status = AE_OK;
528 ACPI_OPERAND_OBJECT *TableDesc = DdbHandle;
529 ACPI_TABLE_DESC *TableInfo;
530
531
532 ACPI_FUNCTION_TRACE ("ExUnloadTable");
533
534
535 /*
536 * Validate the handle
537 * Although the handle is partially validated in AcpiExReconfiguration(),
538 * when it calls AcpiExResolveOperands(), the handle is more completely
539 * validated here.
540 */
541 if ((!DdbHandle) ||
542 (ACPI_GET_DESCRIPTOR_TYPE (DdbHandle) != ACPI_DESC_TYPE_OPERAND) ||
543 (ACPI_GET_OBJECT_TYPE (DdbHandle) != ACPI_TYPE_LOCAL_REFERENCE))
544 {
545 return_ACPI_STATUS (AE_BAD_PARAMETER);
546 }
547
548 /* Get the actual table descriptor from the DdbHandle */
549
550 TableInfo = (ACPI_TABLE_DESC *) TableDesc->Reference.Object;
551
552 /*
553 * Delete the entire namespace under this table Node
554 * (Offset contains the TableId)
555 */
556 AcpiNsDeleteNamespaceByOwner (TableInfo->TableId);
557
558 /* Delete the table itself */
559
560 (void) AcpiTbUninstallTable (TableInfo->InstalledDesc);
561
562 /* Delete the table descriptor (DdbHandle) */
563
564 AcpiUtRemoveReference (TableDesc);
565 return_ACPI_STATUS (Status);
566}
567
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