1 /******************************************************************************
3 * Module Name: nsload - namespace loading/expanding/contracting procedures
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2006, 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 *****************************************************************************/
120 #include "acnamesp.h"
121 #include "acdispat.h"
122 #include "actables.h"
125 #define _COMPONENT ACPI_NAMESPACE
126 ACPI_MODULE_NAME ("nsload")
128 /* Local prototypes */
130 #ifdef ACPI_FUTURE_IMPLEMENTATION
132 AcpiNsUnloadNamespace (
136 AcpiNsDeleteSubtree (
137 ACPI_HANDLE StartHandle
);
141 #ifndef ACPI_NO_METHOD_EXECUTION
142 /*******************************************************************************
144 * FUNCTION: AcpiNsLoadTable
146 * PARAMETERS: TableIndex - Index for table to be loaded
147 * Node - Owning NS node
151 * DESCRIPTION: Load one ACPI table into the namespace
153 ******************************************************************************/
157 ACPI_NATIVE_UINT TableIndex
,
158 ACPI_NAMESPACE_NODE
*Node
)
163 ACPI_FUNCTION_TRACE (NsLoadTable
);
167 * Parse the table and load the namespace with all named
168 * objects found within. Control methods are NOT parsed
169 * at this time. In fact, the control methods cannot be
170 * parsed until the entire namespace is loaded, because
171 * if a control method makes a forward reference (call)
172 * to another control method, we can't continue parsing
173 * because we don't know how many arguments to parse next!
175 Status
= AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE
);
176 if (ACPI_FAILURE (Status
))
178 return_ACPI_STATUS (Status
);
181 /* If table already loaded into namespace, just return */
183 if (AcpiTbIsTableLoaded (TableIndex
))
185 Status
= AE_ALREADY_EXISTS
;
189 ACPI_DEBUG_PRINT ((ACPI_DB_INFO
,
190 "**** Loading table into namespace ****\n"));
192 Status
= AcpiTbAllocateOwnerId (TableIndex
);
193 if (ACPI_FAILURE (Status
))
198 Status
= AcpiNsParseTable (TableIndex
, Node
->Child
);
199 if (ACPI_SUCCESS (Status
))
201 AcpiTbSetTableLoadedFlag (TableIndex
, TRUE
);
205 AcpiTbReleaseOwnerId (TableIndex
);
209 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE
);
211 if (ACPI_FAILURE (Status
))
213 return_ACPI_STATUS (Status
);
217 * Now we can parse the control methods. We always parse
218 * them here for a sanity check, and if configured for
219 * just-in-time parsing, we delete the control method
222 ACPI_DEBUG_PRINT ((ACPI_DB_INFO
,
223 "**** Begin Table Method Parsing and Object Initialization ****\n"));
225 Status
= AcpiDsInitializeObjects (TableIndex
, Node
);
227 ACPI_DEBUG_PRINT ((ACPI_DB_INFO
,
228 "**** Completed Table Method Parsing and Object Initialization ****\n"));
230 return_ACPI_STATUS (Status
);
234 #ifdef ACPI_OBSOLETE_FUNCTIONS
235 /*******************************************************************************
237 * FUNCTION: AcpiLoadNamespace
243 * DESCRIPTION: Load the name space from what ever is pointed to by DSDT.
244 * (DSDT points to either the BIOS or a buffer.)
246 ******************************************************************************/
249 AcpiNsLoadNamespace (
255 ACPI_FUNCTION_TRACE (AcpiLoadNameSpace
);
258 /* There must be at least a DSDT installed */
260 if (AcpiGbl_DSDT
== NULL
)
262 ACPI_ERROR ((AE_INFO
, "DSDT is not in memory"));
263 return_ACPI_STATUS (AE_NO_ACPI_TABLES
);
267 * Load the namespace. The DSDT is required,
268 * but the SSDT and PSDT tables are optional.
270 Status
= AcpiNsLoadTableByType (ACPI_TABLE_ID_DSDT
);
271 if (ACPI_FAILURE (Status
))
273 return_ACPI_STATUS (Status
);
276 /* Ignore exceptions from these */
278 (void) AcpiNsLoadTableByType (ACPI_TABLE_ID_SSDT
);
279 (void) AcpiNsLoadTableByType (ACPI_TABLE_ID_PSDT
);
281 ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT
,
282 "ACPI Namespace successfully loaded at root %p\n",
285 return_ACPI_STATUS (Status
);
289 #ifdef ACPI_FUTURE_IMPLEMENTATION
290 /*******************************************************************************
292 * FUNCTION: AcpiNsDeleteSubtree
294 * PARAMETERS: StartHandle - Handle in namespace where search begins
298 * DESCRIPTION: Walks the namespace starting at the given handle and deletes
299 * all objects, entries, and scopes in the entire subtree.
301 * Namespace/Interpreter should be locked or the subsystem should
302 * be in shutdown before this routine is called.
304 ******************************************************************************/
307 AcpiNsDeleteSubtree (
308 ACPI_HANDLE StartHandle
)
311 ACPI_HANDLE ChildHandle
;
312 ACPI_HANDLE ParentHandle
;
313 ACPI_HANDLE NextChildHandle
;
318 ACPI_FUNCTION_TRACE (NsDeleteSubtree
);
321 ParentHandle
= StartHandle
;
326 * Traverse the tree of objects until we bubble back up
327 * to where we started.
331 /* Attempt to get the next object in this scope */
333 Status
= AcpiGetNextObject (ACPI_TYPE_ANY
, ParentHandle
,
334 ChildHandle
, &NextChildHandle
);
336 ChildHandle
= NextChildHandle
;
338 /* Did we get a new object? */
340 if (ACPI_SUCCESS (Status
))
342 /* Check if this object has any children */
344 if (ACPI_SUCCESS (AcpiGetNextObject (ACPI_TYPE_ANY
, ChildHandle
,
348 * There is at least one child of this object,
352 ParentHandle
= ChildHandle
;
359 * No more children in this object, go back up to
360 * the object's parent
364 /* Delete all children now */
366 AcpiNsDeleteChildren (ChildHandle
);
368 ChildHandle
= ParentHandle
;
369 Status
= AcpiGetParent (ParentHandle
, &ParentHandle
);
370 if (ACPI_FAILURE (Status
))
372 return_ACPI_STATUS (Status
);
377 /* Now delete the starting object, and we are done */
379 AcpiNsDeleteNode (ChildHandle
);
381 return_ACPI_STATUS (AE_OK
);
385 /*******************************************************************************
387 * FUNCTION: AcpiNsUnloadNameSpace
389 * PARAMETERS: Handle - Root of namespace subtree to be deleted
393 * DESCRIPTION: Shrinks the namespace, typically in response to an undocking
394 * event. Deletes an entire subtree starting from (and
395 * including) the given handle.
397 ******************************************************************************/
400 AcpiNsUnloadNamespace (
406 ACPI_FUNCTION_TRACE (NsUnloadNameSpace
);
409 /* Parameter validation */
411 if (!AcpiGbl_RootNode
)
413 return_ACPI_STATUS (AE_NO_NAMESPACE
);
418 return_ACPI_STATUS (AE_BAD_PARAMETER
);
421 /* This function does the real work */
423 Status
= AcpiNsDeleteSubtree (Handle
);
425 return_ACPI_STATUS (Status
);