1 /******************************************************************************
3 * Module Name: tbxface - Public interfaces to the ACPI subsystem
4 * ACPI table oriented interfaces
7 *****************************************************************************/
9 /******************************************************************************
13 * Some or all of this work - Copyright (c) 1999 - 2005, Intel Corp.
14 * All rights reserved.
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
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
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;
39 * The above copyright and patent license is granted only if the following
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.
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
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
74 * 3.4. Intel retains all right, title, and interest in and to the Original
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.
82 * 4. Disclaimer and Export Compliance
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
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
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.
116 *****************************************************************************/
118 #define __TBXFACE_C__
120 #include <contrib/dev/acpica/acpi.h>
121 #include <contrib/dev/acpica/acnamesp.h>
122 #include <contrib/dev/acpica/actables.h>
125 #define _COMPONENT ACPI_TABLES
126 ACPI_MODULE_NAME ("tbxface")
129 /*******************************************************************************
131 * FUNCTION: AcpiLoadTables
137 * DESCRIPTION: This function is called to load the ACPI tables from the
140 ******************************************************************************/
146 ACPI_POINTER RsdpAddress;
150 ACPI_FUNCTION_TRACE ("AcpiLoadTables");
155 Status = AcpiOsGetRootPointer (ACPI_LOGICAL_ADDRESSING,
157 if (ACPI_FAILURE (Status))
159 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not get RSDP, %s\n",
160 AcpiFormatException (Status)));
164 /* Map and validate the RSDP */
166 AcpiGbl_TableFlags = RsdpAddress.PointerType;
168 Status = AcpiTbVerifyRsdp (&RsdpAddress);
169 if (ACPI_FAILURE (Status))
171 ACPI_REPORT_ERROR (("AcpiLoadTables: RSDP Failed validation: %s\n",
172 AcpiFormatException (Status)));
176 /* Get the RSDT via the RSDP */
178 Status = AcpiTbGetTableRsdt ();
179 if (ACPI_FAILURE (Status))
181 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load RSDT: %s\n",
182 AcpiFormatException (Status)));
186 /* Now get the tables needed by this subsystem (FADT, DSDT, etc.) */
188 Status = AcpiTbGetRequiredTables ();
189 if (ACPI_FAILURE (Status))
192 "AcpiLoadTables: Error getting required tables (DSDT/FADT/FACS): %s\n",
193 AcpiFormatException (Status)));
197 ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
199 /* Load the namespace from the tables */
201 Status = AcpiNsLoadNamespace ();
202 if (ACPI_FAILURE (Status))
204 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load namespace: %s\n",
205 AcpiFormatException (Status)));
209 return_ACPI_STATUS (AE_OK);
213 ACPI_REPORT_ERROR (("AcpiLoadTables: Could not load tables: %s\n",
214 AcpiFormatException (Status)));
216 return_ACPI_STATUS (Status);
220 /*******************************************************************************
222 * FUNCTION: AcpiLoadTable
224 * PARAMETERS: TablePtr - pointer to a buffer containing the entire
229 * DESCRIPTION: This function is called to load a table from the caller's
230 * buffer. The buffer must contain an entire ACPI Table including
231 * a valid header. The header fields will be verified, and if it
232 * is determined that the table is invalid, the call will fail.
234 ******************************************************************************/
238 ACPI_TABLE_HEADER *TablePtr)
241 ACPI_TABLE_DESC TableInfo;
242 ACPI_POINTER Address;
245 ACPI_FUNCTION_TRACE ("AcpiLoadTable");
250 return_ACPI_STATUS (AE_BAD_PARAMETER);
253 /* Copy the table to a local buffer */
255 Address.PointerType = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING;
256 Address.Pointer.Logical = TablePtr;
258 Status = AcpiTbGetTableBody (&Address, TablePtr, &TableInfo);
259 if (ACPI_FAILURE (Status))
261 return_ACPI_STATUS (Status);
264 /* Check signature for a valid table type */
266 Status = AcpiTbRecognizeTable (&TableInfo, ACPI_TABLE_ALL);
267 if (ACPI_FAILURE (Status))
269 return_ACPI_STATUS (Status);
272 /* Install the new table into the local data structures */
274 Status = AcpiTbInstallTable (&TableInfo);
275 if (ACPI_FAILURE (Status))
277 if (Status == AE_ALREADY_EXISTS)
279 /* Table already exists, no error */
284 /* Free table allocated by AcpiTbGetTableBody */
286 AcpiTbDeleteSingleTable (&TableInfo);
287 return_ACPI_STATUS (Status);
290 /* Convert the table to common format if necessary */
292 switch (TableInfo.Type)
294 case ACPI_TABLE_FADT:
296 Status = AcpiTbConvertTableFadt ();
299 case ACPI_TABLE_FACS:
301 Status = AcpiTbBuildCommonFacs (&TableInfo);
305 /* Load table into namespace if it contains executable AML */
307 Status = AcpiNsLoadTable (TableInfo.InstalledDesc, AcpiGbl_RootNode);
311 if (ACPI_FAILURE (Status))
313 /* Uninstall table and free the buffer */
315 (void) AcpiTbUninstallTable (TableInfo.InstalledDesc);
318 return_ACPI_STATUS (Status);
322 /*******************************************************************************
324 * FUNCTION: AcpiUnloadTable
326 * PARAMETERS: TableType - Type of table to be unloaded
330 * DESCRIPTION: This routine is used to force the unload of a table
332 ******************************************************************************/
336 ACPI_TABLE_TYPE TableType)
338 ACPI_TABLE_DESC *TableDesc;
341 ACPI_FUNCTION_TRACE ("AcpiUnloadTable");
344 /* Parameter validation */
346 if (TableType > ACPI_TABLE_MAX)
348 return_ACPI_STATUS (AE_BAD_PARAMETER);
351 /* Find all tables of the requested type */
353 TableDesc = AcpiGbl_TableLists[TableType].Next;
357 * Delete all namespace entries owned by this table. Note that these
358 * entries can appear anywhere in the namespace by virtue of the AML
359 * "Scope" operator. Thus, we need to track ownership by an ID, not
360 * simply a position within the hierarchy
362 AcpiNsDeleteNamespaceByOwner (TableDesc->OwnerId);
363 AcpiUtReleaseOwnerId (&TableDesc->OwnerId);
364 TableDesc = TableDesc->Next;
367 /* Delete (or unmap) all tables of this type */
369 AcpiTbDeleteTablesByType (TableType);
370 return_ACPI_STATUS (AE_OK);
374 /*******************************************************************************
376 * FUNCTION: AcpiGetTableHeader
378 * PARAMETERS: TableType - one of the defined table types
379 * Instance - the non zero instance of the table, allows
380 * support for multiple tables of the same type
381 * see AcpiGbl_AcpiTableFlag
382 * OutTableHeader - pointer to the ACPI_TABLE_HEADER if successful
384 * DESCRIPTION: This function is called to get an ACPI table header. The caller
385 * supplies an pointer to a data area sufficient to contain an ACPI
386 * ACPI_TABLE_HEADER structure.
388 * The header contains a length field that can be used to determine
389 * the size of the buffer needed to contain the entire table. This
390 * function is not valid for the RSD PTR table since it does not
391 * have a standard header and is fixed length.
393 ******************************************************************************/
397 ACPI_TABLE_TYPE TableType,
399 ACPI_TABLE_HEADER *OutTableHeader)
401 ACPI_TABLE_HEADER *TblPtr;
405 ACPI_FUNCTION_TRACE ("AcpiGetTableHeader");
408 if ((Instance == 0) ||
409 (TableType == ACPI_TABLE_RSDP) ||
412 return_ACPI_STATUS (AE_BAD_PARAMETER);
415 /* Check the table type and instance */
417 if ((TableType > ACPI_TABLE_MAX) ||
418 (ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags) &&
421 return_ACPI_STATUS (AE_BAD_PARAMETER);
424 /* Get a pointer to the entire table */
426 Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr);
427 if (ACPI_FAILURE (Status))
429 return_ACPI_STATUS (Status);
432 /* The function will return a NULL pointer if the table is not loaded */
436 return_ACPI_STATUS (AE_NOT_EXIST);
439 /* Copy the header to the caller's buffer */
441 ACPI_MEMCPY ((void *) OutTableHeader, (void *) TblPtr,
442 sizeof (ACPI_TABLE_HEADER));
444 return_ACPI_STATUS (Status);
448 /*******************************************************************************
450 * FUNCTION: AcpiGetTable
452 * PARAMETERS: TableType - one of the defined table types
453 * Instance - the non zero instance of the table, allows
454 * support for multiple tables of the same type
455 * see AcpiGbl_AcpiTableFlag
456 * RetBuffer - pointer to a structure containing a buffer to
461 * DESCRIPTION: This function is called to get an ACPI table. The caller
462 * supplies an OutBuffer large enough to contain the entire ACPI
463 * table. The caller should call the AcpiGetTableHeader function
464 * first to determine the buffer size needed. Upon completion
465 * the OutBuffer->Length field will indicate the number of bytes
466 * copied into the OutBuffer->BufPtr buffer. This table will be
467 * a complete table including the header.
469 ******************************************************************************/
473 ACPI_TABLE_TYPE TableType,
475 ACPI_BUFFER *RetBuffer)
477 ACPI_TABLE_HEADER *TblPtr;
479 ACPI_SIZE TableLength;
482 ACPI_FUNCTION_TRACE ("AcpiGetTable");
485 /* Parameter validation */
489 return_ACPI_STATUS (AE_BAD_PARAMETER);
492 Status = AcpiUtValidateBuffer (RetBuffer);
493 if (ACPI_FAILURE (Status))
495 return_ACPI_STATUS (Status);
498 /* Check the table type and instance */
500 if ((TableType > ACPI_TABLE_MAX) ||
501 (ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags) &&
504 return_ACPI_STATUS (AE_BAD_PARAMETER);
507 /* Get a pointer to the entire table */
509 Status = AcpiTbGetTablePtr (TableType, Instance, &TblPtr);
510 if (ACPI_FAILURE (Status))
512 return_ACPI_STATUS (Status);
516 * AcpiTbGetTablePtr will return a NULL pointer if the
517 * table is not loaded.
521 return_ACPI_STATUS (AE_NOT_EXIST);
524 /* Get the table length */
526 if (TableType == ACPI_TABLE_RSDP)
528 /* RSD PTR is the only "table" without a header */
530 TableLength = sizeof (RSDP_DESCRIPTOR);
534 TableLength = (ACPI_SIZE) TblPtr->Length;
537 /* Validate/Allocate/Clear caller buffer */
539 Status = AcpiUtInitializeBuffer (RetBuffer, TableLength);
540 if (ACPI_FAILURE (Status))
542 return_ACPI_STATUS (Status);
545 /* Copy the table to the buffer */
547 ACPI_MEMCPY ((void *) RetBuffer->Pointer, (void *) TblPtr, TableLength);
548 return_ACPI_STATUS (AE_OK);