1/******************************************************************************
2 *
3 * Module Name: tbxface - Public interfaces to the ACPI subsystem
4 * ACPI table oriented interfaces
5 * $Revision: 64 $
6 *
7 *****************************************************************************/
8
9/******************************************************************************
10 *
11 * 1. Copyright Notice
12 *
13 * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp.
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 __TBXFACE_C__
119
| 1/******************************************************************************
2 *
3 * Module Name: tbxface - Public interfaces to the ACPI subsystem
4 * ACPI table oriented interfaces
5 * $Revision: 64 $
6 *
7 *****************************************************************************/
8
9/******************************************************************************
10 *
11 * 1. Copyright Notice
12 *
13 * Some or all of this work - Copyright (c) 1999 - 2004, Intel Corp.
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 __TBXFACE_C__
119
|
123
124
125#define _COMPONENT ACPI_TABLES
126 ACPI_MODULE_NAME ("tbxface")
127
128
129/*******************************************************************************
130 *
131 * FUNCTION: AcpiLoadTables
132 *
133 * PARAMETERS: None
134 *
135 * RETURN: Status
136 *
137 * DESCRIPTION: This function is called to load the ACPI tables from the
138 * provided RSDT
139 *
140 ******************************************************************************/
141
142ACPI_STATUS
143AcpiLoadTables (void)
144{
145 ACPI_POINTER RsdpAddress;
146 ACPI_STATUS Status;
147
148
149 ACPI_FUNCTION_TRACE ("AcpiLoadTables");
150
151
152 /* Get the RSDP */
153
154 Status = AcpiOsGetRootPointer (ACPI_LOGICAL_ADDRESSING,
155 &RsdpAddress);
156 if (ACPI_FAILURE (Status))
157 {
158 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not get RSDP, %s\n",
159 AcpiFormatException (Status)));
160 goto ErrorExit;
161 }
162
163 /* Map and validate the RSDP */
164
165 AcpiGbl_TableFlags = RsdpAddress.PointerType;
166
167 Status = AcpiTbVerifyRsdp (&RsdpAddress);
168 if (ACPI_FAILURE (Status))
169 {
170 ACPI_REPORT_ERROR (("AcpiLoadTables: RSDP Failed validation: %s\n",
171 AcpiFormatException (Status)));
172 goto ErrorExit;
173 }
174
175 /* Get the RSDT via the RSDP */
176
177 Status = AcpiTbGetTableRsdt ();
178 if (ACPI_FAILURE (Status))
179 {
180 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load RSDT: %s\n",
181 AcpiFormatException (Status)));
182 goto ErrorExit;
183 }
184
185 /* Now get the tables needed by this subsystem (FADT, DSDT, etc.) */
186
187 Status = AcpiTbGetRequiredTables ();
188 if (ACPI_FAILURE (Status))
189 {
190 ACPI_REPORT_ERROR (("AcpiLoadTables: Error getting required tables (DSDT/FADT/FACS): %s\n",
191 AcpiFormatException (Status)));
192 goto ErrorExit;
193 }
194
195 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
196
197
198 /* Load the namespace from the tables */
199
200 Status = AcpiNsLoadNamespace ();
201 if (ACPI_FAILURE (Status))
202 {
203 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load namespace: %s\n",
204 AcpiFormatException (Status)));
205 goto ErrorExit;
206 }
207
208 return_ACPI_STATUS (AE_OK);
209
210
211ErrorExit:
212 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load tables: %s\n",
213 AcpiFormatException (Status)));
214
215 return_ACPI_STATUS (Status);
216}
217
218
219/*******************************************************************************
220 *
221 * FUNCTION: AcpiLoadTable
222 *
223 * PARAMETERS: TablePtr - pointer to a buffer containing the entire
224 * table to be loaded
225 *
226 * RETURN: Status
227 *
228 * DESCRIPTION: This function is called to load a table from the caller's
229 * buffer. The buffer must contain an entire ACPI Table including
230 * a valid header. The header fields will be verified, and if it
231 * is determined that the table is invalid, the call will fail.
232 *
233 ******************************************************************************/
234
235ACPI_STATUS
236AcpiLoadTable (
237 ACPI_TABLE_HEADER *TablePtr)
238{
239 ACPI_STATUS Status;
240 ACPI_TABLE_DESC TableInfo;
241 ACPI_POINTER Address;
242
243
244 ACPI_FUNCTION_TRACE ("AcpiLoadTable");
245
246
247 if (!TablePtr)
248 {
249 return_ACPI_STATUS (AE_BAD_PARAMETER);
250 }
251
252 /* Copy the table to a local buffer */
253
254 Address.PointerType = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING;
255 Address.Pointer.Logical = TablePtr;
256
257 Status = AcpiTbGetTableBody (&Address, TablePtr, &TableInfo);
258 if (ACPI_FAILURE (Status))
259 {
260 return_ACPI_STATUS (Status);
261 }
262
263 /* Install the new table into the local data structures */
264
265 Status = AcpiTbInstallTable (&TableInfo);
266 if (ACPI_FAILURE (Status))
267 {
268 /* Free table allocated by AcpiTbGetTableBody */
269
270 AcpiTbDeleteSingleTable (&TableInfo);
271 return_ACPI_STATUS (Status);
272 }
273
274 /* Convert the table to common format if necessary */
275
276 switch (TableInfo.Type)
277 {
278 case ACPI_TABLE_FADT:
279
280 Status = AcpiTbConvertTableFadt ();
281 break;
282
283 case ACPI_TABLE_FACS:
284
285 Status = AcpiTbBuildCommonFacs (&TableInfo);
286 break;
287
288 default:
289 /* Load table into namespace if it contains executable AML */
290
291 Status = AcpiNsLoadTable (TableInfo.InstalledDesc, AcpiGbl_RootNode);
292 break;
293 }
294
295 if (ACPI_FAILURE (Status))
296 {
297 /* Uninstall table and free the buffer */
298
299 (void) AcpiTbUninstallTable (TableInfo.InstalledDesc);
300 }
301
302 return_ACPI_STATUS (Status);
303}
304
305
306/*******************************************************************************
307 *
308 * FUNCTION: AcpiUnloadTable
309 *
310 * PARAMETERS: TableType - Type of table to be unloaded
311 *
312 * RETURN: Status
313 *
314 * DESCRIPTION: This routine is used to force the unload of a table
315 *
316 ******************************************************************************/
317
318ACPI_STATUS
319AcpiUnloadTable (
320 ACPI_TABLE_TYPE TableType)
321{
322 ACPI_TABLE_DESC *TableDesc;
323
324
325 ACPI_FUNCTION_TRACE ("AcpiUnloadTable");
326
327
328 /* Parameter validation */
329
330 if (TableType > ACPI_TABLE_MAX)
331 {
332 return_ACPI_STATUS (AE_BAD_PARAMETER);
333 }
334
335
336 /* Find all tables of the requested type */
337
338 TableDesc = AcpiGbl_TableLists[TableType].Next;
339 while (TableDesc)
340 {
341 /*
342 * Delete all namespace entries owned by this table. Note that these
343 * entries can appear anywhere in the namespace by virtue of the AML
344 * "Scope" operator. Thus, we need to track ownership by an ID, not
345 * simply a position within the hierarchy
346 */
347 AcpiNsDeleteNamespaceByOwner (TableDesc->TableId);
348
349 TableDesc = TableDesc->Next;
350 }
351
352 /* Delete (or unmap) all tables of this type */
353
354 AcpiTbDeleteTablesByType (TableType);
355 return_ACPI_STATUS (AE_OK);
356}
357
358
359/*******************************************************************************
360 *
361 * FUNCTION: AcpiGetTableHeader
362 *
363 * PARAMETERS: TableType - one of the defined table types
364 * Instance - the non zero instance of the table, allows
365 * support for multiple tables of the same type
366 * see AcpiGbl_AcpiTableFlag
367 * OutTableHeader - pointer to the ACPI_TABLE_HEADER if successful
368 *
369 * DESCRIPTION: This function is called to get an ACPI table header. The caller
370 * supplies an pointer to a data area sufficient to contain an ACPI
371 * ACPI_TABLE_HEADER structure.
372 *
373 * The header contains a length field that can be used to determine
374 * the size of the buffer needed to contain the entire table. This
375 * function is not valid for the RSD PTR table since it does not
376 * have a standard header and is fixed length.
377 *
378 ******************************************************************************/
379
380ACPI_STATUS
381AcpiGetTableHeader (
382 ACPI_TABLE_TYPE TableType,
383 UINT32 Instance,
384 ACPI_TABLE_HEADER *OutTableHeader)
385{
386 ACPI_TABLE_HEADER *TblPtr;
387 ACPI_STATUS Status;
388
389
390 ACPI_FUNCTION_TRACE ("AcpiGetTableHeader");
391
392
393 if ((Instance == 0) ||
394 (TableType == ACPI_TABLE_RSDP) ||
395 (!OutTableHeader))
396 {
397 return_ACPI_STATUS (AE_BAD_PARAMETER);
398 }
399
400 /* Check the table type and instance */
401
402 if ((TableType > ACPI_TABLE_MAX) ||
403 (ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags) &&
404 Instance > 1))
405 {
406 return_ACPI_STATUS (AE_BAD_PARAMETER);
407 }
408
409
410 /* Get a pointer to the entire table */
411
412 Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr);
413 if (ACPI_FAILURE (Status))
414 {
415 return_ACPI_STATUS (Status);
416 }
417
418 /*
419 * The function will return a NULL pointer if the table is not loaded
420 */
421 if (TblPtr == NULL)
422 {
423 return_ACPI_STATUS (AE_NOT_EXIST);
424 }
425
426 /*
427 * Copy the header to the caller's buffer
428 */
429 ACPI_MEMCPY ((void *) OutTableHeader, (void *) TblPtr,
430 sizeof (ACPI_TABLE_HEADER));
431
432 return_ACPI_STATUS (Status);
433}
434
435
436/*******************************************************************************
437 *
438 * FUNCTION: AcpiGetTable
439 *
440 * PARAMETERS: TableType - one of the defined table types
441 * Instance - the non zero instance of the table, allows
442 * support for multiple tables of the same type
443 * see AcpiGbl_AcpiTableFlag
444 * RetBuffer - pointer to a structure containing a buffer to
445 * receive the table
446 *
447 * RETURN: Status
448 *
449 * DESCRIPTION: This function is called to get an ACPI table. The caller
450 * supplies an OutBuffer large enough to contain the entire ACPI
451 * table. The caller should call the AcpiGetTableHeader function
452 * first to determine the buffer size needed. Upon completion
453 * the OutBuffer->Length field will indicate the number of bytes
454 * copied into the OutBuffer->BufPtr buffer. This table will be
455 * a complete table including the header.
456 *
457 ******************************************************************************/
458
459ACPI_STATUS
460AcpiGetTable (
461 ACPI_TABLE_TYPE TableType,
462 UINT32 Instance,
463 ACPI_BUFFER *RetBuffer)
464{
465 ACPI_TABLE_HEADER *TblPtr;
466 ACPI_STATUS Status;
467 ACPI_SIZE TableLength;
468
469
470 ACPI_FUNCTION_TRACE ("AcpiGetTable");
471
472
473 /* Parameter validation */
474
475 if (Instance == 0)
476 {
477 return_ACPI_STATUS (AE_BAD_PARAMETER);
478 }
479
480 Status = AcpiUtValidateBuffer (RetBuffer);
481 if (ACPI_FAILURE (Status))
482 {
483 return_ACPI_STATUS (Status);
484 }
485
486 /* Check the table type and instance */
487
488 if ((TableType > ACPI_TABLE_MAX) ||
489 (ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags) &&
490 Instance > 1))
491 {
492 return_ACPI_STATUS (AE_BAD_PARAMETER);
493 }
494
495
496 /* Get a pointer to the entire table */
497
498 Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr);
499 if (ACPI_FAILURE (Status))
500 {
501 return_ACPI_STATUS (Status);
502 }
503
504 /*
505 * AcpiTbGetTablePtr will return a NULL pointer if the
506 * table is not loaded.
507 */
508 if (TblPtr == NULL)
509 {
510 return_ACPI_STATUS (AE_NOT_EXIST);
511 }
512
513 /* Get the table length */
514
515 if (TableType == ACPI_TABLE_RSDP)
516 {
517 /*
518 * RSD PTR is the only "table" without a header
519 */
520 TableLength = sizeof (RSDP_DESCRIPTOR);
521 }
522 else
523 {
524 TableLength = (ACPI_SIZE) TblPtr->Length;
525 }
526
527 /* Validate/Allocate/Clear caller buffer */
528
529 Status = AcpiUtInitializeBuffer (RetBuffer, TableLength);
530 if (ACPI_FAILURE (Status))
531 {
532 return_ACPI_STATUS (Status);
533 }
534
535 /* Copy the table to the buffer */
536
537 ACPI_MEMCPY ((void *) RetBuffer->Pointer, (void *) TblPtr, TableLength);
538 return_ACPI_STATUS (AE_OK);
539}
540
541
| 123
124
125#define _COMPONENT ACPI_TABLES
126 ACPI_MODULE_NAME ("tbxface")
127
128
129/*******************************************************************************
130 *
131 * FUNCTION: AcpiLoadTables
132 *
133 * PARAMETERS: None
134 *
135 * RETURN: Status
136 *
137 * DESCRIPTION: This function is called to load the ACPI tables from the
138 * provided RSDT
139 *
140 ******************************************************************************/
141
142ACPI_STATUS
143AcpiLoadTables (void)
144{
145 ACPI_POINTER RsdpAddress;
146 ACPI_STATUS Status;
147
148
149 ACPI_FUNCTION_TRACE ("AcpiLoadTables");
150
151
152 /* Get the RSDP */
153
154 Status = AcpiOsGetRootPointer (ACPI_LOGICAL_ADDRESSING,
155 &RsdpAddress);
156 if (ACPI_FAILURE (Status))
157 {
158 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not get RSDP, %s\n",
159 AcpiFormatException (Status)));
160 goto ErrorExit;
161 }
162
163 /* Map and validate the RSDP */
164
165 AcpiGbl_TableFlags = RsdpAddress.PointerType;
166
167 Status = AcpiTbVerifyRsdp (&RsdpAddress);
168 if (ACPI_FAILURE (Status))
169 {
170 ACPI_REPORT_ERROR (("AcpiLoadTables: RSDP Failed validation: %s\n",
171 AcpiFormatException (Status)));
172 goto ErrorExit;
173 }
174
175 /* Get the RSDT via the RSDP */
176
177 Status = AcpiTbGetTableRsdt ();
178 if (ACPI_FAILURE (Status))
179 {
180 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load RSDT: %s\n",
181 AcpiFormatException (Status)));
182 goto ErrorExit;
183 }
184
185 /* Now get the tables needed by this subsystem (FADT, DSDT, etc.) */
186
187 Status = AcpiTbGetRequiredTables ();
188 if (ACPI_FAILURE (Status))
189 {
190 ACPI_REPORT_ERROR (("AcpiLoadTables: Error getting required tables (DSDT/FADT/FACS): %s\n",
191 AcpiFormatException (Status)));
192 goto ErrorExit;
193 }
194
195 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
196
197
198 /* Load the namespace from the tables */
199
200 Status = AcpiNsLoadNamespace ();
201 if (ACPI_FAILURE (Status))
202 {
203 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load namespace: %s\n",
204 AcpiFormatException (Status)));
205 goto ErrorExit;
206 }
207
208 return_ACPI_STATUS (AE_OK);
209
210
211ErrorExit:
212 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load tables: %s\n",
213 AcpiFormatException (Status)));
214
215 return_ACPI_STATUS (Status);
216}
217
218
219/*******************************************************************************
220 *
221 * FUNCTION: AcpiLoadTable
222 *
223 * PARAMETERS: TablePtr - pointer to a buffer containing the entire
224 * table to be loaded
225 *
226 * RETURN: Status
227 *
228 * DESCRIPTION: This function is called to load a table from the caller's
229 * buffer. The buffer must contain an entire ACPI Table including
230 * a valid header. The header fields will be verified, and if it
231 * is determined that the table is invalid, the call will fail.
232 *
233 ******************************************************************************/
234
235ACPI_STATUS
236AcpiLoadTable (
237 ACPI_TABLE_HEADER *TablePtr)
238{
239 ACPI_STATUS Status;
240 ACPI_TABLE_DESC TableInfo;
241 ACPI_POINTER Address;
242
243
244 ACPI_FUNCTION_TRACE ("AcpiLoadTable");
245
246
247 if (!TablePtr)
248 {
249 return_ACPI_STATUS (AE_BAD_PARAMETER);
250 }
251
252 /* Copy the table to a local buffer */
253
254 Address.PointerType = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING;
255 Address.Pointer.Logical = TablePtr;
256
257 Status = AcpiTbGetTableBody (&Address, TablePtr, &TableInfo);
258 if (ACPI_FAILURE (Status))
259 {
260 return_ACPI_STATUS (Status);
261 }
262
263 /* Install the new table into the local data structures */
264
265 Status = AcpiTbInstallTable (&TableInfo);
266 if (ACPI_FAILURE (Status))
267 {
268 /* Free table allocated by AcpiTbGetTableBody */
269
270 AcpiTbDeleteSingleTable (&TableInfo);
271 return_ACPI_STATUS (Status);
272 }
273
274 /* Convert the table to common format if necessary */
275
276 switch (TableInfo.Type)
277 {
278 case ACPI_TABLE_FADT:
279
280 Status = AcpiTbConvertTableFadt ();
281 break;
282
283 case ACPI_TABLE_FACS:
284
285 Status = AcpiTbBuildCommonFacs (&TableInfo);
286 break;
287
288 default:
289 /* Load table into namespace if it contains executable AML */
290
291 Status = AcpiNsLoadTable (TableInfo.InstalledDesc, AcpiGbl_RootNode);
292 break;
293 }
294
295 if (ACPI_FAILURE (Status))
296 {
297 /* Uninstall table and free the buffer */
298
299 (void) AcpiTbUninstallTable (TableInfo.InstalledDesc);
300 }
301
302 return_ACPI_STATUS (Status);
303}
304
305
306/*******************************************************************************
307 *
308 * FUNCTION: AcpiUnloadTable
309 *
310 * PARAMETERS: TableType - Type of table to be unloaded
311 *
312 * RETURN: Status
313 *
314 * DESCRIPTION: This routine is used to force the unload of a table
315 *
316 ******************************************************************************/
317
318ACPI_STATUS
319AcpiUnloadTable (
320 ACPI_TABLE_TYPE TableType)
321{
322 ACPI_TABLE_DESC *TableDesc;
323
324
325 ACPI_FUNCTION_TRACE ("AcpiUnloadTable");
326
327
328 /* Parameter validation */
329
330 if (TableType > ACPI_TABLE_MAX)
331 {
332 return_ACPI_STATUS (AE_BAD_PARAMETER);
333 }
334
335
336 /* Find all tables of the requested type */
337
338 TableDesc = AcpiGbl_TableLists[TableType].Next;
339 while (TableDesc)
340 {
341 /*
342 * Delete all namespace entries owned by this table. Note that these
343 * entries can appear anywhere in the namespace by virtue of the AML
344 * "Scope" operator. Thus, we need to track ownership by an ID, not
345 * simply a position within the hierarchy
346 */
347 AcpiNsDeleteNamespaceByOwner (TableDesc->TableId);
348
349 TableDesc = TableDesc->Next;
350 }
351
352 /* Delete (or unmap) all tables of this type */
353
354 AcpiTbDeleteTablesByType (TableType);
355 return_ACPI_STATUS (AE_OK);
356}
357
358
359/*******************************************************************************
360 *
361 * FUNCTION: AcpiGetTableHeader
362 *
363 * PARAMETERS: TableType - one of the defined table types
364 * Instance - the non zero instance of the table, allows
365 * support for multiple tables of the same type
366 * see AcpiGbl_AcpiTableFlag
367 * OutTableHeader - pointer to the ACPI_TABLE_HEADER if successful
368 *
369 * DESCRIPTION: This function is called to get an ACPI table header. The caller
370 * supplies an pointer to a data area sufficient to contain an ACPI
371 * ACPI_TABLE_HEADER structure.
372 *
373 * The header contains a length field that can be used to determine
374 * the size of the buffer needed to contain the entire table. This
375 * function is not valid for the RSD PTR table since it does not
376 * have a standard header and is fixed length.
377 *
378 ******************************************************************************/
379
380ACPI_STATUS
381AcpiGetTableHeader (
382 ACPI_TABLE_TYPE TableType,
383 UINT32 Instance,
384 ACPI_TABLE_HEADER *OutTableHeader)
385{
386 ACPI_TABLE_HEADER *TblPtr;
387 ACPI_STATUS Status;
388
389
390 ACPI_FUNCTION_TRACE ("AcpiGetTableHeader");
391
392
393 if ((Instance == 0) ||
394 (TableType == ACPI_TABLE_RSDP) ||
395 (!OutTableHeader))
396 {
397 return_ACPI_STATUS (AE_BAD_PARAMETER);
398 }
399
400 /* Check the table type and instance */
401
402 if ((TableType > ACPI_TABLE_MAX) ||
403 (ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags) &&
404 Instance > 1))
405 {
406 return_ACPI_STATUS (AE_BAD_PARAMETER);
407 }
408
409
410 /* Get a pointer to the entire table */
411
412 Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr);
413 if (ACPI_FAILURE (Status))
414 {
415 return_ACPI_STATUS (Status);
416 }
417
418 /*
419 * The function will return a NULL pointer if the table is not loaded
420 */
421 if (TblPtr == NULL)
422 {
423 return_ACPI_STATUS (AE_NOT_EXIST);
424 }
425
426 /*
427 * Copy the header to the caller's buffer
428 */
429 ACPI_MEMCPY ((void *) OutTableHeader, (void *) TblPtr,
430 sizeof (ACPI_TABLE_HEADER));
431
432 return_ACPI_STATUS (Status);
433}
434
435
436/*******************************************************************************
437 *
438 * FUNCTION: AcpiGetTable
439 *
440 * PARAMETERS: TableType - one of the defined table types
441 * Instance - the non zero instance of the table, allows
442 * support for multiple tables of the same type
443 * see AcpiGbl_AcpiTableFlag
444 * RetBuffer - pointer to a structure containing a buffer to
445 * receive the table
446 *
447 * RETURN: Status
448 *
449 * DESCRIPTION: This function is called to get an ACPI table. The caller
450 * supplies an OutBuffer large enough to contain the entire ACPI
451 * table. The caller should call the AcpiGetTableHeader function
452 * first to determine the buffer size needed. Upon completion
453 * the OutBuffer->Length field will indicate the number of bytes
454 * copied into the OutBuffer->BufPtr buffer. This table will be
455 * a complete table including the header.
456 *
457 ******************************************************************************/
458
459ACPI_STATUS
460AcpiGetTable (
461 ACPI_TABLE_TYPE TableType,
462 UINT32 Instance,
463 ACPI_BUFFER *RetBuffer)
464{
465 ACPI_TABLE_HEADER *TblPtr;
466 ACPI_STATUS Status;
467 ACPI_SIZE TableLength;
468
469
470 ACPI_FUNCTION_TRACE ("AcpiGetTable");
471
472
473 /* Parameter validation */
474
475 if (Instance == 0)
476 {
477 return_ACPI_STATUS (AE_BAD_PARAMETER);
478 }
479
480 Status = AcpiUtValidateBuffer (RetBuffer);
481 if (ACPI_FAILURE (Status))
482 {
483 return_ACPI_STATUS (Status);
484 }
485
486 /* Check the table type and instance */
487
488 if ((TableType > ACPI_TABLE_MAX) ||
489 (ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags) &&
490 Instance > 1))
491 {
492 return_ACPI_STATUS (AE_BAD_PARAMETER);
493 }
494
495
496 /* Get a pointer to the entire table */
497
498 Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr);
499 if (ACPI_FAILURE (Status))
500 {
501 return_ACPI_STATUS (Status);
502 }
503
504 /*
505 * AcpiTbGetTablePtr will return a NULL pointer if the
506 * table is not loaded.
507 */
508 if (TblPtr == NULL)
509 {
510 return_ACPI_STATUS (AE_NOT_EXIST);
511 }
512
513 /* Get the table length */
514
515 if (TableType == ACPI_TABLE_RSDP)
516 {
517 /*
518 * RSD PTR is the only "table" without a header
519 */
520 TableLength = sizeof (RSDP_DESCRIPTOR);
521 }
522 else
523 {
524 TableLength = (ACPI_SIZE) TblPtr->Length;
525 }
526
527 /* Validate/Allocate/Clear caller buffer */
528
529 Status = AcpiUtInitializeBuffer (RetBuffer, TableLength);
530 if (ACPI_FAILURE (Status))
531 {
532 return_ACPI_STATUS (Status);
533 }
534
535 /* Copy the table to the buffer */
536
537 ACPI_MEMCPY ((void *) RetBuffer->Pointer, (void *) TblPtr, TableLength);
538 return_ACPI_STATUS (AE_OK);
539}
540
541
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