1 /******************************************************************************
3 * Module Name: psxface - Parser external interfaces
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 *****************************************************************************/
117 #define __PSXFACE_C__
120 #include "acparser.h"
121 #include "acdispat.h"
122 #include "acinterp.h"
125 #define _COMPONENT ACPI_PARSER
126 ACPI_MODULE_NAME ("psxface")
128 /* Local Prototypes */
132 ACPI_EVALUATE_INFO *Info);
136 ACPI_EVALUATE_INFO *Info);
139 AcpiPsUpdateParameterList (
140 ACPI_EVALUATE_INFO *Info,
144 /*******************************************************************************
146 * FUNCTION: AcpiDebugTrace
148 * PARAMETERS: MethodName - Valid ACPI name string
149 * DebugLevel - Optional level mask. 0 to use default
150 * DebugLayer - Optional layer mask. 0 to use default
151 * Flags - bit 1: one shot(1) or persistent(0)
155 * DESCRIPTION: External interface to enable debug tracing during control
158 ******************************************************************************/
170 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
171 if (ACPI_FAILURE (Status))
176 /* TBDs: Validate name, allow full path or just nameseg */
178 AcpiGbl_TraceMethodName = *ACPI_CAST_PTR (UINT32, Name);
179 AcpiGbl_TraceFlags = Flags;
183 AcpiGbl_TraceDbgLevel = DebugLevel;
187 AcpiGbl_TraceDbgLayer = DebugLayer;
190 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
195 /*******************************************************************************
197 * FUNCTION: AcpiPsStartTrace
199 * PARAMETERS: Info - Method info struct
203 * DESCRIPTION: Start control method execution trace
205 ******************************************************************************/
209 ACPI_EVALUATE_INFO *Info)
214 ACPI_FUNCTION_ENTRY ();
217 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
218 if (ACPI_FAILURE (Status))
223 if ((!AcpiGbl_TraceMethodName) ||
224 (AcpiGbl_TraceMethodName != Info->ResolvedNode->Name.Integer))
229 AcpiGbl_OriginalDbgLevel = AcpiDbgLevel;
230 AcpiGbl_OriginalDbgLayer = AcpiDbgLayer;
232 AcpiDbgLevel = 0x00FFFFFF;
233 AcpiDbgLayer = ACPI_UINT32_MAX;
235 if (AcpiGbl_TraceDbgLevel)
237 AcpiDbgLevel = AcpiGbl_TraceDbgLevel;
239 if (AcpiGbl_TraceDbgLayer)
241 AcpiDbgLayer = AcpiGbl_TraceDbgLayer;
246 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
250 /*******************************************************************************
252 * FUNCTION: AcpiPsStopTrace
254 * PARAMETERS: Info - Method info struct
258 * DESCRIPTION: Stop control method execution trace
260 ******************************************************************************/
264 ACPI_EVALUATE_INFO *Info)
269 ACPI_FUNCTION_ENTRY ();
272 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
273 if (ACPI_FAILURE (Status))
278 if ((!AcpiGbl_TraceMethodName) ||
279 (AcpiGbl_TraceMethodName != Info->ResolvedNode->Name.Integer))
284 /* Disable further tracing if type is one-shot */
286 if (AcpiGbl_TraceFlags & 1)
288 AcpiGbl_TraceMethodName = 0;
289 AcpiGbl_TraceDbgLevel = 0;
290 AcpiGbl_TraceDbgLayer = 0;
293 AcpiDbgLevel = AcpiGbl_OriginalDbgLevel;
294 AcpiDbgLayer = AcpiGbl_OriginalDbgLayer;
297 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
301 /*******************************************************************************
303 * FUNCTION: AcpiPsExecuteMethod
305 * PARAMETERS: Info - Method info block, contains:
306 * Node - Method Node to execute
307 * ObjDesc - Method object
308 * Parameters - List of parameters to pass to the method,
309 * terminated by NULL. Params itself may be
310 * NULL if no parameters are being passed.
311 * ReturnObject - Where to put method's return value (if
312 * any). If NULL, no value is returned.
313 * ParameterType - Type of Parameter list
314 * ReturnObject - Where to put method's return value (if
315 * any). If NULL, no value is returned.
316 * PassNumber - Parse or execute pass
320 * DESCRIPTION: Execute a control method
322 ******************************************************************************/
325 AcpiPsExecuteMethod (
326 ACPI_EVALUATE_INFO *Info)
329 ACPI_PARSE_OBJECT *Op;
330 ACPI_WALK_STATE *WalkState;
333 ACPI_FUNCTION_TRACE (PsExecuteMethod);
336 /* Validate the Info and method Node */
338 if (!Info || !Info->ResolvedNode)
340 return_ACPI_STATUS (AE_NULL_ENTRY);
343 /* Init for new method, wait on concurrency semaphore */
345 Status = AcpiDsBeginMethodExecution (Info->ResolvedNode, Info->ObjDesc, NULL);
346 if (ACPI_FAILURE (Status))
348 return_ACPI_STATUS (Status);
352 * The caller "owns" the parameters, so give each one an extra reference
354 AcpiPsUpdateParameterList (Info, REF_INCREMENT);
356 /* Begin tracing if requested */
358 AcpiPsStartTrace (Info);
361 * Execute the method. Performs parse simultaneously
363 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
364 "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
365 Info->ResolvedNode->Name.Ascii, Info->ResolvedNode, Info->ObjDesc));
367 /* Create and init a Root Node */
369 Op = AcpiPsCreateScopeOp ();
372 Status = AE_NO_MEMORY;
376 /* Create and initialize a new walk state */
378 Info->PassNumber = ACPI_IMODE_EXECUTE;
379 WalkState = AcpiDsCreateWalkState (
380 Info->ObjDesc->Method.OwnerId, NULL, NULL, NULL);
383 Status = AE_NO_MEMORY;
387 Status = AcpiDsInitAmlWalk (WalkState, Op, Info->ResolvedNode,
388 Info->ObjDesc->Method.AmlStart,
389 Info->ObjDesc->Method.AmlLength, Info, Info->PassNumber);
390 if (ACPI_FAILURE (Status))
392 AcpiDsDeleteWalkState (WalkState);
398 Status = AcpiPsParseAml (WalkState);
400 /* WalkState was deleted by ParseAml */
403 AcpiPsDeleteParseTree (Op);
405 /* End optional tracing */
407 AcpiPsStopTrace (Info);
409 /* Take away the extra reference that we gave the parameters above */
411 AcpiPsUpdateParameterList (Info, REF_DECREMENT);
413 /* Exit now if error above */
415 if (ACPI_FAILURE (Status))
417 return_ACPI_STATUS (Status);
421 * If the method has returned an object, signal this to the caller with
422 * a control exception code
424 if (Info->ReturnObject)
426 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n",
427 Info->ReturnObject));
428 ACPI_DUMP_STACK_ENTRY (Info->ReturnObject);
430 Status = AE_CTRL_RETURN_VALUE;
433 return_ACPI_STATUS (Status);
437 /*******************************************************************************
439 * FUNCTION: AcpiPsUpdateParameterList
441 * PARAMETERS: Info - See ACPI_EVALUATE_INFO
442 * (Used: ParameterType and Parameters)
443 * Action - Add or Remove reference
447 * DESCRIPTION: Update reference count on all method parameter objects
449 ******************************************************************************/
452 AcpiPsUpdateParameterList (
453 ACPI_EVALUATE_INFO *Info,
459 if ((Info->ParameterType == ACPI_PARAM_ARGS) &&
462 /* Update reference count for each parameter */
464 for (i = 0; Info->Parameters[i]; i++)
466 /* Ignore errors, just do them all */
468 (void) AcpiUtUpdateObjectReference (Info->Parameters[i], Action);