1 /******************************************************************************
3 * Module Name: exconfig - Namespace reconfiguration (Load/Unload opcodes)
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2002, 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
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 __EXCONFIG_C__
121 #include "acinterp.h"
123 #include "acnamesp.h"
124 #include "acevents.h"
125 #include "actables.h"
128 #define _COMPONENT ACPI_EXECUTER
129 ACPI_MODULE_NAME ("exconfig")
132 /*******************************************************************************
134 * FUNCTION: AcpiExAddTable
136 * PARAMETERS: Table - Pointer to raw table
137 * ParentNode - Where to load the table (scope)
138 * DdbHandle - Where to return the table handle.
142 * DESCRIPTION: Common function to Install and Load an ACPI table with a
143 * returned table handle.
145 ******************************************************************************/
149 ACPI_TABLE_HEADER *Table,
150 ACPI_NAMESPACE_NODE *ParentNode,
151 ACPI_OPERAND_OBJECT **DdbHandle)
154 ACPI_TABLE_DESC TableInfo;
155 ACPI_OPERAND_OBJECT *ObjDesc;
158 ACPI_FUNCTION_TRACE ("ExAddTable");
161 /* Create an object to be the table handle */
163 ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
166 return_ACPI_STATUS (AE_NO_MEMORY);
169 /* Install the new table into the local data structures */
171 TableInfo.Pointer = Table;
172 TableInfo.Length = (ACPI_SIZE) Table->Length;
173 TableInfo.Allocation = ACPI_MEM_ALLOCATED;
175 Status = AcpiTbInstallTable (&TableInfo);
176 if (ACPI_FAILURE (Status))
181 /* Add the table to the namespace */
183 Status = AcpiNsLoadTable (TableInfo.InstalledDesc, ParentNode);
184 if (ACPI_FAILURE (Status))
186 /* Uninstall table on error */
188 (void) AcpiTbUninstallTable (TableInfo.InstalledDesc);
192 /* Init the table handle */
194 ObjDesc->Reference.Opcode = AML_LOAD_OP;
195 ObjDesc->Reference.Object = TableInfo.InstalledDesc;
196 *DdbHandle = ObjDesc;
197 return_ACPI_STATUS (AE_OK);
201 AcpiUtRemoveReference (ObjDesc);
202 return_ACPI_STATUS (Status);
206 /*******************************************************************************
208 * FUNCTION: AcpiExLoadTableOp
210 * PARAMETERS: WalkState - Current state with operands
211 * ReturnDesc - Where to store the return object
215 * DESCRIPTION: Load an ACPI table
217 ******************************************************************************/
221 ACPI_WALK_STATE *WalkState,
222 ACPI_OPERAND_OBJECT **ReturnDesc)
225 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
226 ACPI_TABLE_HEADER *Table;
227 ACPI_NAMESPACE_NODE *ParentNode;
228 ACPI_NAMESPACE_NODE *StartNode;
229 ACPI_NAMESPACE_NODE *ParameterNode = NULL;
230 ACPI_OPERAND_OBJECT *DdbHandle;
233 ACPI_FUNCTION_TRACE ("ExLoadTableOp");
238 * Make sure that the signature does not match one of the tables that
241 Status = AcpiTbMatchSignature (Operand[0]->String.Pointer, NULL);
244 /* Signature matched -- don't allow override */
246 return_ACPI_STATUS (AE_ALREADY_EXISTS);
250 /* Find the ACPI table */
252 Status = AcpiTbFindTable (Operand[0]->String.Pointer,
253 Operand[1]->String.Pointer,
254 Operand[2]->String.Pointer, &Table);
255 if (ACPI_FAILURE (Status))
257 if (Status != AE_NOT_FOUND)
259 return_ACPI_STATUS (Status);
262 /* Not found, return an Integer=0 and AE_OK */
264 DdbHandle = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
267 return_ACPI_STATUS (AE_NO_MEMORY);
270 DdbHandle->Integer.Value = 0;
271 *ReturnDesc = DdbHandle;
273 return_ACPI_STATUS (AE_OK);
278 StartNode = WalkState->ScopeInfo->Scope.Node;
279 ParentNode = AcpiGbl_RootNode;
281 /* RootPath (optional parameter) */
283 if (Operand[3]->String.Length > 0)
286 * Find the node referenced by the RootPathString. This is the
287 * location within the namespace where the table will be loaded.
289 Status = AcpiNsGetNodeByPath (Operand[3]->String.Pointer, StartNode,
290 ACPI_NS_SEARCH_PARENT, &ParentNode);
291 if (ACPI_FAILURE (Status))
293 return_ACPI_STATUS (Status);
297 /* ParameterPath (optional parameter) */
299 if (Operand[4]->String.Length > 0)
301 if ((Operand[4]->String.Pointer[0] != '\\') &&
302 (Operand[4]->String.Pointer[0] != '^'))
305 * Path is not absolute, so it will be relative to the node
306 * referenced by the RootPathString (or the NS root if omitted)
308 StartNode = ParentNode;
312 * Find the node referenced by the ParameterPathString
314 Status = AcpiNsGetNodeByPath (Operand[4]->String.Pointer, StartNode,
315 ACPI_NS_SEARCH_PARENT, &ParameterNode);
316 if (ACPI_FAILURE (Status))
318 return_ACPI_STATUS (Status);
322 /* Load the table into the namespace */
324 Status = AcpiExAddTable (Table, ParentNode, &DdbHandle);
325 if (ACPI_FAILURE (Status))
327 return_ACPI_STATUS (Status);
330 /* Parameter Data (optional) */
334 /* Store the parameter data into the optional parameter object */
336 Status = AcpiExStore (Operand[5], ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, ParameterNode),
338 if (ACPI_FAILURE (Status))
340 (void) AcpiExUnloadTable (DdbHandle);
344 return_ACPI_STATUS (Status);
348 /*******************************************************************************
350 * FUNCTION: AcpiExLoadOp
352 * PARAMETERS: ObjDesc - Region or Field where the table will be
354 * Target - Where a handle to the table will be stored
355 * WalkState - Current state
359 * DESCRIPTION: Load an ACPI table from a field or operation region
361 ******************************************************************************/
365 ACPI_OPERAND_OBJECT *ObjDesc,
366 ACPI_OPERAND_OBJECT *Target,
367 ACPI_WALK_STATE *WalkState)
370 ACPI_OPERAND_OBJECT *DdbHandle;
371 ACPI_OPERAND_OBJECT *BufferDesc = NULL;
372 ACPI_TABLE_HEADER *TablePtr = NULL;
374 ACPI_TABLE_HEADER TableHeader;
377 ACPI_FUNCTION_TRACE ("ExLoadOp");
380 /* Object can be either an OpRegion or a Field */
382 switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
384 case ACPI_TYPE_REGION:
386 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Region %p %s\n",
387 ObjDesc, AcpiUtGetObjectTypeName (ObjDesc)));
389 /* Get the table header */
391 TableHeader.Length = 0;
392 for (i = 0; i < sizeof (ACPI_TABLE_HEADER); i++)
394 Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ,
395 (ACPI_PHYSICAL_ADDRESS) i, 8,
396 ((UINT8 *) &TableHeader) + i);
397 if (ACPI_FAILURE (Status))
399 return_ACPI_STATUS (Status);
403 /* Allocate a buffer for the entire table */
405 TablePtr = ACPI_MEM_ALLOCATE (TableHeader.Length);
408 return_ACPI_STATUS (AE_NO_MEMORY);
411 /* Copy the header to the buffer */
413 ACPI_MEMCPY (TablePtr, &TableHeader, sizeof (ACPI_TABLE_HEADER));
414 TableDataPtr = ACPI_PTR_ADD (UINT8, TablePtr, sizeof (ACPI_TABLE_HEADER));
416 /* Get the table from the op region */
418 for (i = 0; i < TableHeader.Length; i++)
420 Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ,
421 (ACPI_PHYSICAL_ADDRESS) i, 8,
422 ((UINT8 *) TableDataPtr + i));
423 if (ACPI_FAILURE (Status))
431 case ACPI_TYPE_BUFFER_FIELD:
432 case ACPI_TYPE_LOCAL_REGION_FIELD:
433 case ACPI_TYPE_LOCAL_BANK_FIELD:
434 case ACPI_TYPE_LOCAL_INDEX_FIELD:
436 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Field %p %s\n",
437 ObjDesc, AcpiUtGetObjectTypeName (ObjDesc)));
440 * The length of the field must be at least as large as the table.
441 * Read the entire field and thus the entire table. Buffer is
442 * allocated during the read.
444 Status = AcpiExReadDataFromField (WalkState, ObjDesc, &BufferDesc);
445 if (ACPI_FAILURE (Status))
450 TablePtr = ACPI_CAST_PTR (ACPI_TABLE_HEADER, BufferDesc->Buffer.Pointer);
455 return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
458 /* The table must be either an SSDT or a PSDT */
460 if ((!ACPI_STRNCMP (TablePtr->Signature,
461 AcpiGbl_AcpiTableData[ACPI_TABLE_PSDT].Signature,
462 AcpiGbl_AcpiTableData[ACPI_TABLE_PSDT].SigLength)) &&
463 (!ACPI_STRNCMP (TablePtr->Signature,
464 AcpiGbl_AcpiTableData[ACPI_TABLE_SSDT].Signature,
465 AcpiGbl_AcpiTableData[ACPI_TABLE_SSDT].SigLength)))
467 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
468 "Table has invalid signature [%4.4s], must be SSDT or PSDT\n",
469 TablePtr->Signature));
470 Status = AE_BAD_SIGNATURE;
474 /* Install the new table into the local data structures */
476 Status = AcpiExAddTable (TablePtr, AcpiGbl_RootNode, &DdbHandle);
477 if (ACPI_FAILURE (Status))
482 /* Store the DdbHandle into the Target operand */
484 Status = AcpiExStore (DdbHandle, Target, WalkState);
485 if (ACPI_FAILURE (Status))
487 (void) AcpiExUnloadTable (DdbHandle);
490 return_ACPI_STATUS (Status);
497 AcpiUtRemoveReference (BufferDesc);
501 ACPI_MEM_FREE (TablePtr);
503 return_ACPI_STATUS (Status);
507 /*******************************************************************************
509 * FUNCTION: AcpiExUnloadTable
511 * PARAMETERS: DdbHandle - Handle to a previously loaded table
515 * DESCRIPTION: Unload an ACPI table
517 ******************************************************************************/
521 ACPI_OPERAND_OBJECT *DdbHandle)
523 ACPI_STATUS Status = AE_NOT_IMPLEMENTED;
524 ACPI_OPERAND_OBJECT *TableDesc = DdbHandle;
525 ACPI_TABLE_DESC *TableInfo;
528 ACPI_FUNCTION_TRACE ("ExUnloadTable");
532 * Validate the handle
533 * Although the handle is partially validated in AcpiExReconfiguration(),
534 * when it calls AcpiExResolveOperands(), the handle is more completely
538 (ACPI_GET_DESCRIPTOR_TYPE (DdbHandle) != ACPI_DESC_TYPE_OPERAND) ||
539 (ACPI_GET_OBJECT_TYPE (DdbHandle) != ACPI_TYPE_LOCAL_REFERENCE))
541 return_ACPI_STATUS (AE_BAD_PARAMETER);
544 /* Get the actual table descriptor from the DdbHandle */
546 TableInfo = (ACPI_TABLE_DESC *) TableDesc->Reference.Object;
549 * Delete the entire namespace under this table Node
550 * (Offset contains the TableId)
552 AcpiNsDeleteNamespaceByOwner (TableInfo->TableId);
554 /* Delete the table itself */
556 (void) AcpiTbUninstallTable (TableInfo->InstalledDesc);
558 /* Delete the table descriptor (DdbHandle) */
560 AcpiUtRemoveReference (TableDesc);
561 return_ACPI_STATUS (Status);