1 /******************************************************************************
3 * Module Name: tbinstal - ACPI table installation and removal
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2004, 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 *****************************************************************************/
118 #define __TBINSTAL_C__
121 #include "actables.h"
124 #define _COMPONENT ACPI_TABLES
125 ACPI_MODULE_NAME ("tbinstal")
128 /*******************************************************************************
130 * FUNCTION: AcpiTbMatchSignature
132 * PARAMETERS: Signature - Table signature to match
133 * TableInfo - Return data
137 * DESCRIPTION: Compare signature against the list of "ACPI-subsystem-owned"
138 * tables (DSDT/FADT/SSDT, etc.) Returns the TableTypeID on match.
140 ******************************************************************************/
143 AcpiTbMatchSignature (
145 ACPI_TABLE_DESC *TableInfo,
151 ACPI_FUNCTION_TRACE ("TbMatchSignature");
155 * Search for a signature match among the known table types
157 for (i = 0; i < NUM_ACPI_TABLE_TYPES; i++)
159 if (!(AcpiGbl_TableData[i].Flags & SearchType))
164 if (!ACPI_STRNCMP (Signature, AcpiGbl_TableData[i].Signature,
165 AcpiGbl_TableData[i].SigLength))
167 /* Found a signature match, return index if requested */
171 TableInfo->Type = (UINT8) i;
174 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
175 "Table [%4.4s] is an ACPI table consumed by the core subsystem\n",
176 (char *) AcpiGbl_TableData[i].Signature));
178 return_ACPI_STATUS (AE_OK);
182 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
183 "Table [%4.4s] is not an ACPI table consumed by the core subsystem - ignored\n",
184 (char *) Signature));
186 return_ACPI_STATUS (AE_TABLE_NOT_SUPPORTED);
190 /*******************************************************************************
192 * FUNCTION: AcpiTbInstallTable
194 * PARAMETERS: TableInfo - Return value from AcpiTbGetTableBody
198 * DESCRIPTION: Load and validate all tables other than the RSDT. The RSDT must
199 * already be loaded and validated.
200 * Install the table into the global data structs.
202 ******************************************************************************/
206 ACPI_TABLE_DESC *TableInfo)
210 ACPI_FUNCTION_TRACE ("TbInstallTable");
213 /* Lock tables while installing */
215 Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES);
216 if (ACPI_FAILURE (Status))
218 ACPI_REPORT_ERROR (("Could not acquire table mutex for [%4.4s], %s\n",
219 TableInfo->Pointer->Signature, AcpiFormatException (Status)));
220 return_ACPI_STATUS (Status);
223 /* Install the table into the global data structure */
225 Status = AcpiTbInitTableDescriptor (TableInfo->Type, TableInfo);
226 if (ACPI_FAILURE (Status))
228 ACPI_REPORT_ERROR (("Could not install ACPI table [%4.4s], %s\n",
229 TableInfo->Pointer->Signature, AcpiFormatException (Status)));
232 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "%s located at %p\n",
233 AcpiGbl_TableData[TableInfo->Type].Name, TableInfo->Pointer));
235 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
236 return_ACPI_STATUS (Status);
240 /*******************************************************************************
242 * FUNCTION: AcpiTbRecognizeTable
244 * PARAMETERS: TableInfo - Return value from AcpiTbGetTableBody
248 * DESCRIPTION: Check a table signature for a match against known table types
250 * NOTE: All table pointers are validated as follows:
251 * 1) Table pointer must point to valid physical memory
252 * 2) Signature must be 4 ASCII chars, even if we don't recognize the
254 * 3) Table must be readable for length specified in the header
255 * 4) Table checksum must be valid (with the exception of the FACS
256 * which has no checksum for some odd reason)
258 ******************************************************************************/
261 AcpiTbRecognizeTable (
262 ACPI_TABLE_DESC *TableInfo,
265 ACPI_TABLE_HEADER *TableHeader;
269 ACPI_FUNCTION_TRACE ("TbRecognizeTable");
272 /* Ensure that we have a valid table pointer */
274 TableHeader = (ACPI_TABLE_HEADER *) TableInfo->Pointer;
277 return_ACPI_STATUS (AE_BAD_PARAMETER);
281 * We only "recognize" a limited number of ACPI tables -- namely, the
282 * ones that are used by the subsystem (DSDT, FADT, etc.)
284 * An AE_TABLE_NOT_SUPPORTED means that the table was not recognized.
285 * This can be any one of many valid ACPI tables, it just isn't one of
286 * the tables that is consumed by the core subsystem
288 Status = AcpiTbMatchSignature (TableHeader->Signature, TableInfo, SearchType);
289 if (ACPI_FAILURE (Status))
291 return_ACPI_STATUS (Status);
294 Status = AcpiTbValidateTableHeader (TableHeader);
295 if (ACPI_FAILURE (Status))
297 return_ACPI_STATUS (Status);
300 /* Return the table type and length via the info struct */
302 TableInfo->Length = (ACPI_SIZE) TableHeader->Length;
304 return_ACPI_STATUS (Status);
308 /*******************************************************************************
310 * FUNCTION: AcpiTbInitTableDescriptor
312 * PARAMETERS: TableType - The type of the table
313 * TableInfo - A table info struct
317 * DESCRIPTION: Install a table into the global data structs.
319 ******************************************************************************/
322 AcpiTbInitTableDescriptor (
323 ACPI_TABLE_TYPE TableType,
324 ACPI_TABLE_DESC *TableInfo)
326 ACPI_TABLE_LIST *ListHead;
327 ACPI_TABLE_DESC *TableDesc;
330 ACPI_FUNCTION_TRACE_U32 ("TbInitTableDescriptor", TableType);
333 /* Allocate a descriptor for this table */
335 TableDesc = ACPI_MEM_CALLOCATE (sizeof (ACPI_TABLE_DESC));
338 return_ACPI_STATUS (AE_NO_MEMORY);
342 * Install the table into the global data structure
344 ListHead = &AcpiGbl_TableLists[TableType];
347 * Two major types of tables: 1) Only one instance is allowed. This
348 * includes most ACPI tables such as the DSDT. 2) Multiple instances of
349 * the table are allowed. This includes SSDT and PSDTs.
351 if (ACPI_IS_SINGLE_TABLE (AcpiGbl_TableData[TableType].Flags))
354 * Only one table allowed, and a table has alread been installed
355 * at this location, so return an error.
359 return_ACPI_STATUS (AE_ALREADY_EXISTS);
362 TableDesc->Next = ListHead->Next;
363 ListHead->Next = TableDesc;
367 TableDesc->Next->Prev = TableDesc;
375 * Link the new table in to the list of tables of this type.
376 * Insert at the end of the list, order IS IMPORTANT.
378 * TableDesc->Prev & Next are already NULL from calloc()
384 ListHead->Next = TableDesc;
388 TableDesc->Next = ListHead->Next;
390 while (TableDesc->Next->Next)
392 TableDesc->Next = TableDesc->Next->Next;
395 TableDesc->Next->Next = TableDesc;
396 TableDesc->Prev = TableDesc->Next;
397 TableDesc->Next = NULL;
401 /* Finish initialization of the table descriptor */
403 TableDesc->Type = (UINT8) TableType;
404 TableDesc->Pointer = TableInfo->Pointer;
405 TableDesc->Length = TableInfo->Length;
406 TableDesc->Allocation = TableInfo->Allocation;
407 TableDesc->AmlStart = (UINT8 *) (TableDesc->Pointer + 1),
408 TableDesc->AmlLength = (UINT32) (TableDesc->Length -
409 (UINT32) sizeof (ACPI_TABLE_HEADER));
410 TableDesc->TableId = AcpiUtAllocateOwnerId (ACPI_OWNER_TYPE_TABLE);
411 TableDesc->LoadedIntoNamespace = FALSE;
414 * Set the appropriate global pointer (if there is one) to point to the
415 * newly installed table
417 if (AcpiGbl_TableData[TableType].GlobalPtr)
419 *(AcpiGbl_TableData[TableType].GlobalPtr) = TableInfo->Pointer;
424 TableInfo->TableId = TableDesc->TableId;
425 TableInfo->InstalledDesc = TableDesc;
427 return_ACPI_STATUS (AE_OK);
431 /*******************************************************************************
433 * FUNCTION: AcpiTbDeleteAllTables
439 * DESCRIPTION: Delete all internal ACPI tables
441 ******************************************************************************/
444 AcpiTbDeleteAllTables (void)
446 ACPI_TABLE_TYPE Type;
450 * Free memory allocated for ACPI tables
451 * Memory can either be mapped or allocated
453 for (Type = 0; Type < NUM_ACPI_TABLE_TYPES; Type++)
455 AcpiTbDeleteTablesByType (Type);
460 /*******************************************************************************
462 * FUNCTION: AcpiTbDeleteTablesByType
464 * PARAMETERS: Type - The table type to be deleted
468 * DESCRIPTION: Delete an internal ACPI table
469 * Locks the ACPI table mutex
471 ******************************************************************************/
474 AcpiTbDeleteTablesByType (
475 ACPI_TABLE_TYPE Type)
477 ACPI_TABLE_DESC *TableDesc;
482 ACPI_FUNCTION_TRACE_U32 ("TbDeleteTablesByType", Type);
485 if (Type > ACPI_TABLE_MAX)
490 if (ACPI_FAILURE (AcpiUtAcquireMutex (ACPI_MTX_TABLES)))
495 /* Clear the appropriate "typed" global table pointer */
499 case ACPI_TABLE_RSDP:
503 case ACPI_TABLE_DSDT:
507 case ACPI_TABLE_FADT:
511 case ACPI_TABLE_FACS:
515 case ACPI_TABLE_XSDT:
519 case ACPI_TABLE_SSDT:
520 case ACPI_TABLE_PSDT:
527 * 1) Get the head of the list
529 TableDesc = AcpiGbl_TableLists[Type].Next;
530 Count = AcpiGbl_TableLists[Type].Count;
533 * 2) Walk the entire list, deleting both the allocated tables
534 * and the table descriptors
536 for (i = 0; i < Count; i++)
538 TableDesc = AcpiTbUninstallTable (TableDesc);
541 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
546 /*******************************************************************************
548 * FUNCTION: AcpiTbDeleteSingleTable
550 * PARAMETERS: TableInfo - A table info struct
554 * DESCRIPTION: Low-level free for a single ACPI table. Handles cases where
555 * the table was allocated a buffer or was mapped.
557 ******************************************************************************/
560 AcpiTbDeleteSingleTable (
561 ACPI_TABLE_DESC *TableDesc)
564 /* Must have a valid table descriptor and pointer */
567 (!TableDesc->Pointer))
572 /* Valid table, determine type of memory allocation */
574 switch (TableDesc->Allocation)
576 case ACPI_MEM_NOT_ALLOCATED:
579 case ACPI_MEM_ALLOCATED:
581 ACPI_MEM_FREE (TableDesc->Pointer);
584 case ACPI_MEM_MAPPED:
586 AcpiOsUnmapMemory (TableDesc->Pointer, TableDesc->Length);
595 /*******************************************************************************
597 * FUNCTION: AcpiTbUninstallTable
599 * PARAMETERS: TableInfo - A table info struct
601 * RETURN: Pointer to the next table in the list (of same type)
603 * DESCRIPTION: Free the memory associated with an internal ACPI table that
604 * is either installed or has never been installed.
605 * Table mutex should be locked.
607 ******************************************************************************/
610 AcpiTbUninstallTable (
611 ACPI_TABLE_DESC *TableDesc)
613 ACPI_TABLE_DESC *NextDesc;
616 ACPI_FUNCTION_TRACE_PTR ("TbUninstallTable", TableDesc);
624 /* Unlink the descriptor from the doubly linked list */
628 TableDesc->Prev->Next = TableDesc->Next;
632 /* Is first on list, update list head */
634 AcpiGbl_TableLists[TableDesc->Type].Next = TableDesc->Next;
639 TableDesc->Next->Prev = TableDesc->Prev;
642 /* Free the memory allocated for the table itself */
644 AcpiTbDeleteSingleTable (TableDesc);
646 /* Free the table descriptor */
648 NextDesc = TableDesc->Next;
649 ACPI_MEM_FREE (TableDesc);
651 /* Return pointer to the next descriptor */
653 return_PTR (NextDesc);