1 /******************************************************************************
3 * Module Name: tbget - ACPI Table get* routines
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2005, Intel Corp.
13 * All rights reserved.
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
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
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;
38 * The above copyright and patent license is granted only if the following
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.
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
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
73 * 3.4. Intel retains all right, title, and interest in and to the Original
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.
81 * 4. Disclaimer and Export Compliance
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 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government. In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
115 *****************************************************************************/
119 #include <contrib/dev/acpica/acpi.h>
120 #include <contrib/dev/acpica/actables.h>
123 #define _COMPONENT ACPI_TABLES
124 ACPI_MODULE_NAME ("tbget")
126 /* Local prototypes */
130 ACPI_POINTER *Address,
131 ACPI_TABLE_HEADER *Header,
132 ACPI_TABLE_DESC *TableInfo);
135 AcpiTbTableOverride (
136 ACPI_TABLE_HEADER *Header,
137 ACPI_TABLE_DESC *TableInfo);
140 /*******************************************************************************
142 * FUNCTION: AcpiTbGetTable
144 * PARAMETERS: Address - Address of table to retrieve. Can be
145 * Logical or Physical
146 * TableInfo - Where table info is returned
150 * DESCRIPTION: Get entire table of unknown size.
152 ******************************************************************************/
156 ACPI_POINTER *Address,
157 ACPI_TABLE_DESC *TableInfo)
160 ACPI_TABLE_HEADER Header;
163 ACPI_FUNCTION_TRACE ("TbGetTable");
166 /* Get the header in order to get signature and table size */
168 Status = AcpiTbGetTableHeader (Address, &Header);
169 if (ACPI_FAILURE (Status))
171 return_ACPI_STATUS (Status);
174 /* Get the entire table */
176 Status = AcpiTbGetTableBody (Address, &Header, TableInfo);
177 if (ACPI_FAILURE (Status))
179 ACPI_REPORT_ERROR (("Could not get ACPI table (size %X), %s\n",
180 Header.Length, AcpiFormatException (Status)));
181 return_ACPI_STATUS (Status);
184 return_ACPI_STATUS (AE_OK);
188 /*******************************************************************************
190 * FUNCTION: AcpiTbGetTableHeader
192 * PARAMETERS: Address - Address of table to retrieve. Can be
193 * Logical or Physical
194 * ReturnHeader - Where the table header is returned
198 * DESCRIPTION: Get an ACPI table header. Works in both physical or virtual
199 * addressing mode. Works with both physical or logical pointers.
200 * Table is either copied or mapped, depending on the pointer
201 * type and mode of the processor.
203 ******************************************************************************/
206 AcpiTbGetTableHeader (
207 ACPI_POINTER *Address,
208 ACPI_TABLE_HEADER *ReturnHeader)
210 ACPI_STATUS Status = AE_OK;
211 ACPI_TABLE_HEADER *Header = NULL;
214 ACPI_FUNCTION_TRACE ("TbGetTableHeader");
218 * Flags contains the current processor mode (Virtual or Physical
219 * addressing) The PointerType is either Logical or Physical
221 switch (Address->PointerType)
223 case ACPI_PHYSMODE_PHYSPTR:
224 case ACPI_LOGMODE_LOGPTR:
226 /* Pointer matches processor mode, copy the header */
228 ACPI_MEMCPY (ReturnHeader, Address->Pointer.Logical,
229 sizeof (ACPI_TABLE_HEADER));
233 case ACPI_LOGMODE_PHYSPTR:
235 /* Create a logical address for the physical pointer*/
237 Status = AcpiOsMapMemory (Address->Pointer.Physical,
238 sizeof (ACPI_TABLE_HEADER), (void *) &Header);
239 if (ACPI_FAILURE (Status))
242 "Could not map memory at %8.8X%8.8X for length %X\n",
243 ACPI_FORMAT_UINT64 (Address->Pointer.Physical),
244 sizeof (ACPI_TABLE_HEADER)));
245 return_ACPI_STATUS (Status);
248 /* Copy header and delete mapping */
250 ACPI_MEMCPY (ReturnHeader, Header, sizeof (ACPI_TABLE_HEADER));
251 AcpiOsUnmapMemory (Header, sizeof (ACPI_TABLE_HEADER));
257 ACPI_REPORT_ERROR (("Invalid address flags %X\n",
258 Address->PointerType));
259 return_ACPI_STATUS (AE_BAD_PARAMETER);
262 ACPI_DEBUG_PRINT ((ACPI_DB_TABLES, "Table Signature: [%4.4s]\n",
263 ReturnHeader->Signature));
265 return_ACPI_STATUS (AE_OK);
269 /*******************************************************************************
271 * FUNCTION: AcpiTbGetTableBody
273 * PARAMETERS: Address - Address of table to retrieve. Can be
274 * Logical or Physical
275 * Header - Header of the table to retrieve
276 * TableInfo - Where the table info is returned
280 * DESCRIPTION: Get an entire ACPI table with support to allow the host OS to
281 * replace the table with a newer version (table override.)
282 * Works in both physical or virtual
283 * addressing mode. Works with both physical or logical pointers.
284 * Table is either copied or mapped, depending on the pointer
285 * type and mode of the processor.
287 ******************************************************************************/
291 ACPI_POINTER *Address,
292 ACPI_TABLE_HEADER *Header,
293 ACPI_TABLE_DESC *TableInfo)
298 ACPI_FUNCTION_TRACE ("TbGetTableBody");
301 if (!TableInfo || !Address)
303 return_ACPI_STATUS (AE_BAD_PARAMETER);
306 /* Attempt table override. */
308 Status = AcpiTbTableOverride (Header, TableInfo);
309 if (ACPI_SUCCESS (Status))
311 /* Table was overridden by the host OS */
313 return_ACPI_STATUS (Status);
316 /* No override, get the original table */
318 Status = AcpiTbGetThisTable (Address, Header, TableInfo);
319 return_ACPI_STATUS (Status);
323 /*******************************************************************************
325 * FUNCTION: AcpiTbTableOverride
327 * PARAMETERS: Header - Pointer to table header
328 * TableInfo - Return info if table is overridden
332 * DESCRIPTION: Attempts override of current table with a new one if provided
335 ******************************************************************************/
338 AcpiTbTableOverride (
339 ACPI_TABLE_HEADER *Header,
340 ACPI_TABLE_DESC *TableInfo)
342 ACPI_TABLE_HEADER *NewTable;
344 ACPI_POINTER Address;
347 ACPI_FUNCTION_TRACE ("TbTableOverride");
351 * The OSL will examine the header and decide whether to override this
352 * table. If it decides to override, a table will be returned in NewTable,
353 * which we will then copy.
355 Status = AcpiOsTableOverride (Header, &NewTable);
356 if (ACPI_FAILURE (Status))
358 /* Some severe error from the OSL, but we basically ignore it */
360 ACPI_REPORT_ERROR (("Could not override ACPI table, %s\n",
361 AcpiFormatException (Status)));
362 return_ACPI_STATUS (Status);
367 /* No table override */
369 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
373 * We have a new table to override the old one. Get a copy of
374 * the new one. We know that the new table has a logical pointer.
376 Address.PointerType = ACPI_LOGICAL_POINTER | ACPI_LOGICAL_ADDRESSING;
377 Address.Pointer.Logical = NewTable;
379 Status = AcpiTbGetThisTable (&Address, NewTable, TableInfo);
380 if (ACPI_FAILURE (Status))
382 ACPI_REPORT_ERROR (("Could not copy override ACPI table, %s\n",
383 AcpiFormatException (Status)));
384 return_ACPI_STATUS (Status);
387 /* Copy the table info */
389 ACPI_REPORT_INFO (("Table [%4.4s] replaced by host OS\n",
390 TableInfo->Pointer->Signature));
392 return_ACPI_STATUS (AE_OK);
396 /*******************************************************************************
398 * FUNCTION: AcpiTbGetThisTable
400 * PARAMETERS: Address - Address of table to retrieve. Can be
401 * Logical or Physical
402 * Header - Header of the table to retrieve
403 * TableInfo - Where the table info is returned
407 * DESCRIPTION: Get an entire ACPI table. Works in both physical or virtual
408 * addressing mode. Works with both physical or logical pointers.
409 * Table is either copied or mapped, depending on the pointer
410 * type and mode of the processor.
412 ******************************************************************************/
416 ACPI_POINTER *Address,
417 ACPI_TABLE_HEADER *Header,
418 ACPI_TABLE_DESC *TableInfo)
420 ACPI_TABLE_HEADER *FullTable = NULL;
422 ACPI_STATUS Status = AE_OK;
425 ACPI_FUNCTION_TRACE ("TbGetThisTable");
429 * Flags contains the current processor mode (Virtual or Physical
430 * addressing) The PointerType is either Logical or Physical
432 switch (Address->PointerType)
434 case ACPI_PHYSMODE_PHYSPTR:
435 case ACPI_LOGMODE_LOGPTR:
437 /* Pointer matches processor mode, copy the table to a new buffer */
439 FullTable = ACPI_MEM_ALLOCATE (Header->Length);
443 "Could not allocate table memory for [%4.4s] length %X\n",
444 Header->Signature, Header->Length));
445 return_ACPI_STATUS (AE_NO_MEMORY);
448 /* Copy the entire table (including header) to the local buffer */
450 ACPI_MEMCPY (FullTable, Address->Pointer.Logical, Header->Length);
452 /* Save allocation type */
454 Allocation = ACPI_MEM_ALLOCATED;
458 case ACPI_LOGMODE_PHYSPTR:
461 * Just map the table's physical memory
462 * into our address space.
464 Status = AcpiOsMapMemory (Address->Pointer.Physical,
465 (ACPI_SIZE) Header->Length, (void *) &FullTable);
466 if (ACPI_FAILURE (Status))
469 "Could not map memory for table [%4.4s] at %8.8X%8.8X for length %X\n",
471 ACPI_FORMAT_UINT64 (Address->Pointer.Physical),
476 /* Save allocation type */
478 Allocation = ACPI_MEM_MAPPED;
484 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid address flags %X\n",
485 Address->PointerType));
486 return_ACPI_STATUS (AE_BAD_PARAMETER);
490 * Validate checksum for _most_ tables,
491 * even the ones whose signature we don't recognize
493 if (TableInfo->Type != ACPI_TABLE_FACS)
495 Status = AcpiTbVerifyTableChecksum (FullTable);
497 #if (!ACPI_CHECKSUM_ABORT)
498 if (ACPI_FAILURE (Status))
500 /* Ignore the error if configuration says so */
509 TableInfo->Pointer = FullTable;
510 TableInfo->Length = (ACPI_SIZE) Header->Length;
511 TableInfo->Allocation = Allocation;
513 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
514 "Found table [%4.4s] at %8.8X%8.8X, mapped/copied to %p\n",
515 FullTable->Signature,
516 ACPI_FORMAT_UINT64 (Address->Pointer.Physical), FullTable));
518 return_ACPI_STATUS (Status);
522 /*******************************************************************************
524 * FUNCTION: AcpiTbGetTablePtr
526 * PARAMETERS: TableType - one of the defined table types
527 * Instance - Which table of this type
528 * TablePtrLoc - pointer to location to place the pointer for
533 * DESCRIPTION: This function is called to get the pointer to an ACPI table.
535 ******************************************************************************/
539 ACPI_TABLE_TYPE TableType,
541 ACPI_TABLE_HEADER **TablePtrLoc)
543 ACPI_TABLE_DESC *TableDesc;
547 ACPI_FUNCTION_TRACE ("TbGetTablePtr");
552 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
555 if (TableType > ACPI_TABLE_MAX)
557 return_ACPI_STATUS (AE_BAD_PARAMETER);
561 * For all table types (Single/Multiple), the first
562 * instance is always in the list head.
569 if (AcpiGbl_TableLists[TableType].Next)
571 *TablePtrLoc = AcpiGbl_TableLists[TableType].Next->Pointer;
573 return_ACPI_STATUS (AE_OK);
576 /* Check for instance out of range */
578 if (Instance > AcpiGbl_TableLists[TableType].Count)
580 return_ACPI_STATUS (AE_NOT_EXIST);
583 /* Walk the list to get the desired table
584 * Since the if (Instance == 1) check above checked for the
585 * first table, setting TableDesc equal to the .Next member
586 * is actually pointing to the second table. Therefore, we
587 * need to walk from the 2nd table until we reach the Instance
588 * that the user is looking for and return its table pointer.
590 TableDesc = AcpiGbl_TableLists[TableType].Next;
591 for (i = 2; i < Instance; i++)
593 TableDesc = TableDesc->Next;
596 /* We are now pointing to the requested table's descriptor */
598 *TablePtrLoc = TableDesc->Pointer;
600 return_ACPI_STATUS (AE_OK);