1 /******************************************************************************
3 * Module Name: psxface - Parser external interfaces
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 *****************************************************************************/
117 #define __PSXFACE_C__
120 #include "acparser.h"
121 #include "acdispat.h"
122 #include "acinterp.h"
123 #include "acnamesp.h"
126 #define _COMPONENT ACPI_PARSER
127 ACPI_MODULE_NAME ("psxface")
130 /*******************************************************************************
132 * FUNCTION: AcpiPsxExecute
134 * PARAMETERS: MethodNode - A method object containing both the AML
135 * address and length.
136 * **Params - List of parameters to pass to method,
137 * terminated by NULL. Params itself may be
138 * NULL if no parameters are being passed.
139 * **ReturnObjDesc - Return object from execution of the
144 * DESCRIPTION: Execute a control method
146 ******************************************************************************/
150 ACPI_NAMESPACE_NODE *MethodNode,
151 ACPI_OPERAND_OBJECT **Params,
152 ACPI_OPERAND_OBJECT **ReturnObjDesc)
155 ACPI_OPERAND_OBJECT *ObjDesc;
157 ACPI_PARSE_OBJECT *Op;
158 ACPI_WALK_STATE *WalkState;
161 ACPI_FUNCTION_TRACE ("PsxExecute");
164 /* Validate the Node and get the attached object */
168 return_ACPI_STATUS (AE_NULL_ENTRY);
171 ObjDesc = AcpiNsGetAttachedObject (MethodNode);
174 return_ACPI_STATUS (AE_NULL_OBJECT);
177 /* Init for new method, wait on concurrency semaphore */
179 Status = AcpiDsBeginMethodExecution (MethodNode, ObjDesc, NULL);
180 if (ACPI_FAILURE (Status))
182 return_ACPI_STATUS (Status);
188 * The caller "owns" the parameters, so give each one an extra
191 for (i = 0; Params[i]; i++)
193 AcpiUtAddReference (Params[i]);
198 * 1) Perform the first pass parse of the method to enter any
199 * named objects that it creates into the namespace
201 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
202 "**** Begin Method Parse **** Entry=%p obj=%p\n",
203 MethodNode, ObjDesc));
205 /* Create and init a Root Node */
207 Op = AcpiPsCreateScopeOp ();
210 Status = AE_NO_MEMORY;
215 * Get a new OwnerId for objects created by this method. Namespace
216 * objects (such as Operation Regions) can be created during the
219 ObjDesc->Method.OwningId = AcpiUtAllocateOwnerId (ACPI_OWNER_TYPE_METHOD);
221 /* Create and initialize a new walk state */
223 WalkState = AcpiDsCreateWalkState (ObjDesc->Method.OwningId,
227 Status = AE_NO_MEMORY;
231 Status = AcpiDsInitAmlWalk (WalkState, Op, MethodNode, ObjDesc->Method.AmlStart,
232 ObjDesc->Method.AmlLength, NULL, NULL, 1);
233 if (ACPI_FAILURE (Status))
240 Status = AcpiPsParseAml (WalkState);
241 AcpiPsDeleteParseTree (Op);
242 if (ACPI_FAILURE (Status))
244 goto Cleanup1; /* Walk state is already deleted */
249 * 2) Execute the method. Performs second pass parse simultaneously
251 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
252 "**** Begin Method Execution **** Entry=%p obj=%p\n",
253 MethodNode, ObjDesc));
255 /* Create and init a Root Node */
257 Op = AcpiPsCreateScopeOp ();
260 Status = AE_NO_MEMORY;
264 /* Init new op with the method name and pointer back to the NS node */
266 AcpiPsSetName (Op, MethodNode->Name.Integer);
267 Op->Common.Node = MethodNode;
269 /* Create and initialize a new walk state */
271 WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
274 Status = AE_NO_MEMORY;
278 Status = AcpiDsInitAmlWalk (WalkState, Op, MethodNode, ObjDesc->Method.AmlStart,
279 ObjDesc->Method.AmlLength, Params, ReturnObjDesc, 3);
280 if (ACPI_FAILURE (Status))
286 * The walk of the parse tree is where we actually execute the method
288 Status = AcpiPsParseAml (WalkState);
289 goto Cleanup2; /* Walk state already deleted */
294 AcpiDsDeleteWalkState (WalkState);
297 AcpiPsDeleteParseTree (Op);
302 /* Take away the extra reference that we gave the parameters above */
304 for (i = 0; Params[i]; i++)
306 /* Ignore errors, just do them all */
308 (void) AcpiUtUpdateObjectReference (Params[i], REF_DECREMENT);
312 if (ACPI_FAILURE (Status))
314 return_ACPI_STATUS (Status);
318 * If the method has returned an object, signal this to the caller with
319 * a control exception code
323 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n",
325 ACPI_DUMP_STACK_ENTRY (*ReturnObjDesc);
327 Status = AE_CTRL_RETURN_VALUE;
330 return_ACPI_STATUS (Status);