1 /******************************************************************************
3 * Module Name: psxface - Parser external interfaces
6 *****************************************************************************/
8 /******************************************************************************
12 * Some or all of this work - Copyright (c) 1999 - 2005, 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: Info->Node - 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_PARAMETER_INFO
*Info
)
153 ACPI_OPERAND_OBJECT
*ObjDesc
;
155 ACPI_PARSE_OBJECT
*Op
;
156 ACPI_WALK_STATE
*WalkState
;
159 ACPI_FUNCTION_TRACE ("PsxExecute");
162 /* Validate the Node and get the attached object */
164 if (!Info
|| !Info
->Node
)
166 return_ACPI_STATUS (AE_NULL_ENTRY
);
169 ObjDesc
= AcpiNsGetAttachedObject (Info
->Node
);
172 return_ACPI_STATUS (AE_NULL_OBJECT
);
175 /* Init for new method, wait on concurrency semaphore */
177 Status
= AcpiDsBeginMethodExecution (Info
->Node
, ObjDesc
, NULL
);
178 if (ACPI_FAILURE (Status
))
180 return_ACPI_STATUS (Status
);
183 if ((Info
->ParameterType
== ACPI_PARAM_ARGS
) &&
187 * The caller "owns" the parameters, so give each one an extra
190 for (i
= 0; Info
->Parameters
[i
]; i
++)
192 AcpiUtAddReference (Info
->Parameters
[i
]);
197 * 1) Perform the first pass parse of the method to enter any
198 * named objects that it creates into the namespace
200 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE
,
201 "**** Begin Method Parse **** Entry=%p obj=%p\n",
202 Info
->Node
, ObjDesc
));
204 /* Create and init a Root Node */
206 Op
= AcpiPsCreateScopeOp ();
209 Status
= AE_NO_MEMORY
;
214 * Get a new OwnerId for objects created by this method. Namespace
215 * objects (such as Operation Regions) can be created during the
218 ObjDesc
->Method
.OwningId
= AcpiUtAllocateOwnerId (ACPI_OWNER_TYPE_METHOD
);
220 /* Create and initialize a new walk state */
222 WalkState
= AcpiDsCreateWalkState (ObjDesc
->Method
.OwningId
,
226 Status
= AE_NO_MEMORY
;
230 Status
= AcpiDsInitAmlWalk (WalkState
, Op
, Info
->Node
,
231 ObjDesc
->Method
.AmlStart
,
232 ObjDesc
->Method
.AmlLength
, 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 */
248 * 2) Execute the method. Performs second pass parse simultaneously
250 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE
,
251 "**** Begin Method Execution **** Entry=%p obj=%p\n",
252 Info
->Node
, ObjDesc
));
254 /* Create and init a Root Node */
256 Op
= AcpiPsCreateScopeOp ();
259 Status
= AE_NO_MEMORY
;
263 /* Init new op with the method name and pointer back to the NS node */
265 AcpiPsSetName (Op
, Info
->Node
->Name
.Integer
);
266 Op
->Common
.Node
= Info
->Node
;
268 /* Create and initialize a new walk state */
270 WalkState
= AcpiDsCreateWalkState (0, NULL
, NULL
, NULL
);
273 Status
= AE_NO_MEMORY
;
277 Status
= AcpiDsInitAmlWalk (WalkState
, Op
, Info
->Node
,
278 ObjDesc
->Method
.AmlStart
,
279 ObjDesc
->Method
.AmlLength
, Info
, 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 */
293 AcpiDsDeleteWalkState (WalkState
);
296 AcpiPsDeleteParseTree (Op
);
299 if ((Info
->ParameterType
== ACPI_PARAM_ARGS
) &&
302 /* Take away the extra reference that we gave the parameters above */
304 for (i
= 0; Info
->Parameters
[i
]; i
++)
306 /* Ignore errors, just do them all */
308 (void) AcpiUtUpdateObjectReference (Info
->Parameters
[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
321 if (Info
->ReturnObject
)
323 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE
, "Method returned ObjDesc=%p\n",
324 Info
->ReturnObject
));
325 ACPI_DUMP_STACK_ENTRY (Info
->ReturnObject
);
327 Status
= AE_CTRL_RETURN_VALUE
;
330 return_ACPI_STATUS (Status
);