1 /******************************************************************************
3 * Module Name: nsload - namespace loading/expanding/contracting procedures
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2003, 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 *****************************************************************************/
116 /* $DragonFly: src/sys/contrib/dev/acpica/Attic/nsload.c,v 1.1 2003/09/24 03:32:16 drhodus Exp $ */
121 #include "acnamesp.h"
122 #include "acdispat.h"
125 #define _COMPONENT ACPI_NAMESPACE
126 ACPI_MODULE_NAME ("nsload")
129 #ifndef ACPI_NO_METHOD_EXECUTION
131 /*******************************************************************************
133 * FUNCTION: AcpiNsLoadTable
135 * PARAMETERS: TableDesc - Descriptor for table to be loaded
136 * Node - Owning NS node
140 * DESCRIPTION: Load one ACPI table into the namespace
142 ******************************************************************************/
146 ACPI_TABLE_DESC *TableDesc,
147 ACPI_NAMESPACE_NODE *Node)
152 ACPI_FUNCTION_TRACE ("NsLoadTable");
155 /* Check if table contains valid AML (must be DSDT, PSDT, SSDT, etc.) */
157 if (!(AcpiGbl_AcpiTableData[TableDesc->Type].Flags & ACPI_TABLE_EXECUTABLE))
159 /* Just ignore this table */
161 return_ACPI_STATUS (AE_OK);
164 /* Check validity of the AML start and length */
166 if (!TableDesc->AmlStart)
168 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null AML pointer\n"));
169 return_ACPI_STATUS (AE_BAD_PARAMETER);
172 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "AML block at %p\n", TableDesc->AmlStart));
174 /* Ignore table if there is no AML contained within */
176 if (!TableDesc->AmlLength)
178 ACPI_REPORT_WARNING (("Zero-length AML block in table [%4.4s]\n", TableDesc->Pointer->Signature));
179 return_ACPI_STATUS (AE_OK);
183 * Parse the table and load the namespace with all named
184 * objects found within. Control methods are NOT parsed
185 * at this time. In fact, the control methods cannot be
186 * parsed until the entire namespace is loaded, because
187 * if a control method makes a forward reference (call)
188 * to another control method, we can't continue parsing
189 * because we don't know how many arguments to parse next!
191 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "**** Loading table into namespace ****\n"));
193 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
194 if (ACPI_FAILURE (Status))
196 return_ACPI_STATUS (Status);
199 Status = AcpiNsParseTable (TableDesc, Node->Child);
200 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
202 if (ACPI_FAILURE (Status))
204 return_ACPI_STATUS (Status);
208 * Now we can parse the control methods. We always parse
209 * them here for a sanity check, and if configured for
210 * just-in-time parsing, we delete the control method
213 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
214 "**** Begin Table Method Parsing and Object Initialization ****\n"));
216 Status = AcpiDsInitializeObjects (TableDesc, Node);
218 ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
219 "**** Completed Table Method Parsing and Object Initialization ****\n"));
221 return_ACPI_STATUS (Status);
225 /*******************************************************************************
227 * FUNCTION: AcpiNsLoadTableByType
229 * PARAMETERS: TableType - Id of the table type to load
233 * DESCRIPTION: Load an ACPI table or tables into the namespace. All tables
234 * of the given type are loaded. The mechanism allows this
235 * routine to be called repeatedly.
237 ******************************************************************************/
240 AcpiNsLoadTableByType (
241 ACPI_TABLE_TYPE TableType)
245 ACPI_TABLE_DESC *TableDesc;
248 ACPI_FUNCTION_TRACE ("NsLoadTableByType");
251 Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES);
252 if (ACPI_FAILURE (Status))
254 return_ACPI_STATUS (Status);
258 * Table types supported are:
259 * DSDT (one), SSDT/PSDT (multiple)
263 case ACPI_TABLE_DSDT:
265 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Loading DSDT\n"));
267 TableDesc = &AcpiGbl_AcpiTables[ACPI_TABLE_DSDT];
269 /* If table already loaded into namespace, just return */
271 if (TableDesc->LoadedIntoNamespace)
276 TableDesc->TableId = TABLE_ID_DSDT;
278 /* Now load the single DSDT */
280 Status = AcpiNsLoadTable (TableDesc, AcpiGbl_RootNode);
281 if (ACPI_SUCCESS (Status))
283 TableDesc->LoadedIntoNamespace = TRUE;
289 case ACPI_TABLE_SSDT:
291 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Loading %d SSDTs\n",
292 AcpiGbl_AcpiTables[ACPI_TABLE_SSDT].Count));
295 * Traverse list of SSDT tables
297 TableDesc = &AcpiGbl_AcpiTables[ACPI_TABLE_SSDT];
298 for (i = 0; i < AcpiGbl_AcpiTables[ACPI_TABLE_SSDT].Count; i++)
301 * Only attempt to load table if it is not
304 if (!TableDesc->LoadedIntoNamespace)
306 Status = AcpiNsLoadTable (TableDesc, AcpiGbl_RootNode);
307 if (ACPI_FAILURE (Status))
312 TableDesc->LoadedIntoNamespace = TRUE;
315 TableDesc = TableDesc->Next;
320 case ACPI_TABLE_PSDT:
322 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Loading %d PSDTs\n",
323 AcpiGbl_AcpiTables[ACPI_TABLE_PSDT].Count));
326 * Traverse list of PSDT tables
328 TableDesc = &AcpiGbl_AcpiTables[ACPI_TABLE_PSDT];
330 for (i = 0; i < AcpiGbl_AcpiTables[ACPI_TABLE_PSDT].Count; i++)
332 /* Only attempt to load table if it is not already loaded! */
334 if (!TableDesc->LoadedIntoNamespace)
336 Status = AcpiNsLoadTable (TableDesc, AcpiGbl_RootNode);
337 if (ACPI_FAILURE (Status))
342 TableDesc->LoadedIntoNamespace = TRUE;
345 TableDesc = TableDesc->Next;
358 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
359 return_ACPI_STATUS (Status);
363 /*******************************************************************************
365 * FUNCTION: AcpiLoadNamespace
371 * DESCRIPTION: Load the name space from what ever is pointed to by DSDT.
372 * (DSDT points to either the BIOS or a buffer.)
374 ******************************************************************************/
377 AcpiNsLoadNamespace (
383 ACPI_FUNCTION_TRACE ("AcpiLoadNameSpace");
386 /* There must be at least a DSDT installed */
388 if (AcpiGbl_DSDT == NULL)
390 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "DSDT is not in memory\n"));
391 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
395 * Load the namespace. The DSDT is required,
396 * but the SSDT and PSDT tables are optional.
398 Status = AcpiNsLoadTableByType (ACPI_TABLE_DSDT);
399 if (ACPI_FAILURE (Status))
401 return_ACPI_STATUS (Status);
404 /* Ignore exceptions from these */
406 (void) AcpiNsLoadTableByType (ACPI_TABLE_SSDT);
407 (void) AcpiNsLoadTableByType (ACPI_TABLE_PSDT);
409 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
410 "ACPI Namespace successfully loaded at root %p\n",
413 return_ACPI_STATUS (Status);
417 /*******************************************************************************
419 * FUNCTION: AcpiNsDeleteSubtree
421 * PARAMETERS: StartHandle - Handle in namespace where search begins
425 * DESCRIPTION: Walks the namespace starting at the given handle and deletes
426 * all objects, entries, and scopes in the entire subtree.
428 * Namespace/Interpreter should be locked or the subsystem should
429 * be in shutdown before this routine is called.
431 ******************************************************************************/
434 AcpiNsDeleteSubtree (
435 ACPI_HANDLE StartHandle)
438 ACPI_HANDLE ChildHandle;
439 ACPI_HANDLE ParentHandle;
440 ACPI_HANDLE NextChildHandle;
445 ACPI_FUNCTION_TRACE ("NsDeleteSubtree");
448 ParentHandle = StartHandle;
453 * Traverse the tree of objects until we bubble back up
454 * to where we started.
458 /* Attempt to get the next object in this scope */
460 Status = AcpiGetNextObject (ACPI_TYPE_ANY, ParentHandle,
461 ChildHandle, &NextChildHandle);
463 ChildHandle = NextChildHandle;
465 /* Did we get a new object? */
467 if (ACPI_SUCCESS (Status))
469 /* Check if this object has any children */
471 if (ACPI_SUCCESS (AcpiGetNextObject (ACPI_TYPE_ANY, ChildHandle,
475 * There is at least one child of this object,
479 ParentHandle = ChildHandle;
486 * No more children in this object, go back up to
487 * the object's parent
491 /* Delete all children now */
493 AcpiNsDeleteChildren (ChildHandle);
495 ChildHandle = ParentHandle;
496 Status = AcpiGetParent (ParentHandle, &ParentHandle);
497 if (ACPI_FAILURE (Status))
499 return_ACPI_STATUS (Status);
504 /* Now delete the starting object, and we are done */
506 AcpiNsDeleteNode (ChildHandle);
508 return_ACPI_STATUS (AE_OK);
512 /*******************************************************************************
514 * FUNCTION: AcpiNsUnloadNameSpace
516 * PARAMETERS: Handle - Root of namespace subtree to be deleted
520 * DESCRIPTION: Shrinks the namespace, typically in response to an undocking
521 * event. Deletes an entire subtree starting from (and
522 * including) the given handle.
524 ******************************************************************************/
527 AcpiNsUnloadNamespace (
533 ACPI_FUNCTION_TRACE ("NsUnloadNameSpace");
536 /* Parameter validation */
538 if (!AcpiGbl_RootNode)
540 return_ACPI_STATUS (AE_NO_NAMESPACE);
545 return_ACPI_STATUS (AE_BAD_PARAMETER);
548 /* This function does the real work */
550 Status = AcpiNsDeleteSubtree (Handle);
552 return_ACPI_STATUS (Status);