1 /******************************************************************************
2 *
3 * Module Name: psxface - Parser external interfaces
4 *
5 *****************************************************************************/
6
7 /******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************
115 *
116 * Alternatively, you may choose to be licensed under the terms of the
117 * following license:
118 *
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
121 * are met:
122 * 1. Redistributions of source code must retain the above copyright
123 * notice, this list of conditions, and the following disclaimer,
124 * without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 * substantially similar to the "NO WARRANTY" disclaimer below
127 * ("Disclaimer") and any redistribution must be conditioned upon
128 * including a substantially similar Disclaimer requirement for further
129 * binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 * of any contributors may be used to endorse or promote products derived
132 * from this software without specific prior written permission.
133 *
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145 *
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
149 *
150 *****************************************************************************/
151
152 #include "acpi.h"
153 #include "accommon.h"
154 #include "acparser.h"
155 #include "acdispat.h"
156 #include "acinterp.h"
157 #include "actables.h"
158 #include "acnamesp.h"
159
160
161 #define _COMPONENT ACPI_PARSER
162 ACPI_MODULE_NAME ("psxface")
163
164 /* Local Prototypes */
165
166 static void
167 AcpiPsUpdateParameterList (
168 ACPI_EVALUATE_INFO *Info,
169 UINT16 Action);
170
171
172 /*******************************************************************************
173 *
174 * FUNCTION: AcpiDebugTrace
175 *
176 * PARAMETERS: MethodName - Valid ACPI name string
177 * DebugLevel - Optional level mask. 0 to use default
178 * DebugLayer - Optional layer mask. 0 to use default
179 * Flags - bit 1: one shot(1) or persistent(0)
180 *
181 * RETURN: Status
182 *
183 * DESCRIPTION: External interface to enable debug tracing during control
184 * method execution
185 *
186 ******************************************************************************/
187
188 ACPI_STATUS
AcpiDebugTrace(const char * Name,UINT32 DebugLevel,UINT32 DebugLayer,UINT32 Flags)189 AcpiDebugTrace (
190 const char *Name,
191 UINT32 DebugLevel,
192 UINT32 DebugLayer,
193 UINT32 Flags)
194 {
195 ACPI_STATUS Status;
196
197
198 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
199 if (ACPI_FAILURE (Status))
200 {
201 return (Status);
202 }
203
204 AcpiGbl_TraceMethodName = Name;
205 AcpiGbl_TraceFlags = Flags;
206 AcpiGbl_TraceDbgLevel = DebugLevel;
207 AcpiGbl_TraceDbgLayer = DebugLayer;
208 Status = AE_OK;
209
210 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
211 return (Status);
212 }
213
214
215 /*******************************************************************************
216 *
217 * FUNCTION: AcpiPsExecuteMethod
218 *
219 * PARAMETERS: Info - Method info block, contains:
220 * Node - Method Node to execute
221 * ObjDesc - Method object
222 * Parameters - List of parameters to pass to the method,
223 * terminated by NULL. Params itself may be
224 * NULL if no parameters are being passed.
225 * ReturnObject - Where to put method's return value (if
226 * any). If NULL, no value is returned.
227 * ParameterType - Type of Parameter list
228 * ReturnObject - Where to put method's return value (if
229 * any). If NULL, no value is returned.
230 * PassNumber - Parse or execute pass
231 *
232 * RETURN: Status
233 *
234 * DESCRIPTION: Execute a control method
235 *
236 ******************************************************************************/
237
238 ACPI_STATUS
AcpiPsExecuteMethod(ACPI_EVALUATE_INFO * Info)239 AcpiPsExecuteMethod (
240 ACPI_EVALUATE_INFO *Info)
241 {
242 ACPI_STATUS Status;
243 ACPI_PARSE_OBJECT *Op;
244 ACPI_WALK_STATE *WalkState;
245
246
247 ACPI_FUNCTION_TRACE (PsExecuteMethod);
248
249
250 /* Quick validation of DSDT header */
251
252 AcpiTbCheckDsdtHeader ();
253
254 /* Validate the Info and method Node */
255
256 if (!Info || !Info->Node)
257 {
258 return_ACPI_STATUS (AE_NULL_ENTRY);
259 }
260
261 /* Init for new method, wait on concurrency semaphore */
262
263 Status = AcpiDsBeginMethodExecution (Info->Node, Info->ObjDesc, NULL);
264 if (ACPI_FAILURE (Status))
265 {
266 return_ACPI_STATUS (Status);
267 }
268
269 /*
270 * The caller "owns" the parameters, so give each one an extra reference
271 */
272 AcpiPsUpdateParameterList (Info, REF_INCREMENT);
273
274 /*
275 * Execute the method. Performs parse simultaneously
276 */
277 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
278 "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
279 Info->Node->Name.Ascii, Info->Node, Info->ObjDesc));
280
281 /* Create and init a Root Node */
282
283 Op = AcpiPsCreateScopeOp (Info->ObjDesc->Method.AmlStart);
284 if (!Op)
285 {
286 Status = AE_NO_MEMORY;
287 goto Cleanup;
288 }
289
290 /* Create and initialize a new walk state */
291
292 Info->PassNumber = ACPI_IMODE_EXECUTE;
293 WalkState = AcpiDsCreateWalkState (
294 Info->ObjDesc->Method.OwnerId, NULL, NULL, NULL);
295 if (!WalkState)
296 {
297 Status = AE_NO_MEMORY;
298 goto Cleanup;
299 }
300
301 Status = AcpiDsInitAmlWalk (WalkState, Op, Info->Node,
302 Info->ObjDesc->Method.AmlStart,
303 Info->ObjDesc->Method.AmlLength, Info, Info->PassNumber);
304 if (ACPI_FAILURE (Status))
305 {
306 AcpiDsDeleteWalkState (WalkState);
307 goto Cleanup;
308 }
309
310 if (Info->ObjDesc->Method.InfoFlags & ACPI_METHOD_MODULE_LEVEL)
311 {
312 WalkState->ParseFlags |= ACPI_PARSE_MODULE_LEVEL;
313 }
314
315 /* Invoke an internal method if necessary */
316
317 if (Info->ObjDesc->Method.InfoFlags & ACPI_METHOD_INTERNAL_ONLY)
318 {
319 Status = Info->ObjDesc->Method.Dispatch.Implementation (WalkState);
320 Info->ReturnObject = WalkState->ReturnDesc;
321
322 /* Cleanup states */
323
324 AcpiDsScopeStackClear (WalkState);
325 AcpiPsCleanupScope (&WalkState->ParserState);
326 AcpiDsTerminateControlMethod (WalkState->MethodDesc, WalkState);
327 AcpiDsDeleteWalkState (WalkState);
328 goto Cleanup;
329 }
330
331 /*
332 * Start method evaluation with an implicit return of zero.
333 * This is done for Windows compatibility.
334 */
335 if (AcpiGbl_EnableInterpreterSlack)
336 {
337 WalkState->ImplicitReturnObj =
338 AcpiUtCreateIntegerObject ((UINT64) 0);
339 if (!WalkState->ImplicitReturnObj)
340 {
341 Status = AE_NO_MEMORY;
342 AcpiDsDeleteWalkState (WalkState);
343 goto Cleanup;
344 }
345 }
346
347 /* Parse the AML */
348
349 Status = AcpiPsParseAml (WalkState);
350
351 /* WalkState was deleted by ParseAml */
352
353 Cleanup:
354 AcpiPsDeleteParseTree (Op);
355
356 /* Take away the extra reference that we gave the parameters above */
357
358 AcpiPsUpdateParameterList (Info, REF_DECREMENT);
359
360 /* Exit now if error above */
361
362 if (ACPI_FAILURE (Status))
363 {
364 return_ACPI_STATUS (Status);
365 }
366
367 /*
368 * If the method has returned an object, signal this to the caller with
369 * a control exception code
370 */
371 if (Info->ReturnObject)
372 {
373 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n",
374 Info->ReturnObject));
375 ACPI_DUMP_STACK_ENTRY (Info->ReturnObject);
376
377 Status = AE_CTRL_RETURN_VALUE;
378 }
379
380 return_ACPI_STATUS (Status);
381 }
382
383
384 /*******************************************************************************
385 *
386 * FUNCTION: AcpiPsExecuteTable
387 *
388 * PARAMETERS: Info - Method info block, contains:
389 * Node - Node to where the is entered into the
390 * namespace
391 * ObjDesc - Pseudo method object describing the AML
392 * code of the entire table
393 * PassNumber - Parse or execute pass
394 *
395 * RETURN: Status
396 *
397 * DESCRIPTION: Execute a table
398 *
399 ******************************************************************************/
400
401 ACPI_STATUS
AcpiPsExecuteTable(ACPI_EVALUATE_INFO * Info)402 AcpiPsExecuteTable (
403 ACPI_EVALUATE_INFO *Info)
404 {
405 ACPI_STATUS Status;
406 ACPI_PARSE_OBJECT *Op = NULL;
407 ACPI_WALK_STATE *WalkState = NULL;
408
409
410 ACPI_FUNCTION_TRACE (PsExecuteTable);
411
412
413 /* Create and init a Root Node */
414
415 Op = AcpiPsCreateScopeOp (Info->ObjDesc->Method.AmlStart);
416 if (!Op)
417 {
418 Status = AE_NO_MEMORY;
419 goto Cleanup;
420 }
421
422 /* Create and initialize a new walk state */
423
424 WalkState = AcpiDsCreateWalkState (
425 Info->ObjDesc->Method.OwnerId, NULL, NULL, NULL);
426 if (!WalkState)
427 {
428 Status = AE_NO_MEMORY;
429 goto Cleanup;
430 }
431
432 Status = AcpiDsInitAmlWalk (WalkState, Op, Info->Node,
433 Info->ObjDesc->Method.AmlStart,
434 Info->ObjDesc->Method.AmlLength, Info, Info->PassNumber);
435 if (ACPI_FAILURE (Status))
436 {
437 goto Cleanup;
438 }
439
440 if (Info->ObjDesc->Method.InfoFlags & ACPI_METHOD_MODULE_LEVEL)
441 {
442 WalkState->ParseFlags |= ACPI_PARSE_MODULE_LEVEL;
443 }
444
445 /* Info->Node is the default location to load the table */
446
447 if (Info->Node && Info->Node != AcpiGbl_RootNode)
448 {
449 Status = AcpiDsScopeStackPush (
450 Info->Node, ACPI_TYPE_METHOD, WalkState);
451 if (ACPI_FAILURE (Status))
452 {
453 goto Cleanup;
454 }
455 }
456
457 /*
458 * Parse the AML, WalkState will be deleted by ParseAml
459 */
460 AcpiExEnterInterpreter ();
461 Status = AcpiPsParseAml (WalkState);
462 AcpiExExitInterpreter ();
463 WalkState = NULL;
464
465 Cleanup:
466 if (WalkState)
467 {
468 AcpiDsDeleteWalkState (WalkState);
469 }
470 if (Op)
471 {
472 AcpiPsDeleteParseTree (Op);
473 }
474 return_ACPI_STATUS (Status);
475 }
476
477
478 /*******************************************************************************
479 *
480 * FUNCTION: AcpiPsUpdateParameterList
481 *
482 * PARAMETERS: Info - See ACPI_EVALUATE_INFO
483 * (Used: ParameterType and Parameters)
484 * Action - Add or Remove reference
485 *
486 * RETURN: Status
487 *
488 * DESCRIPTION: Update reference count on all method parameter objects
489 *
490 ******************************************************************************/
491
492 static void
AcpiPsUpdateParameterList(ACPI_EVALUATE_INFO * Info,UINT16 Action)493 AcpiPsUpdateParameterList (
494 ACPI_EVALUATE_INFO *Info,
495 UINT16 Action)
496 {
497 UINT32 i;
498
499
500 if (Info->Parameters)
501 {
502 /* Update reference count for each parameter */
503
504 for (i = 0; Info->Parameters[i]; i++)
505 {
506 /* Ignore errors, just do them all */
507
508 (void) AcpiUtUpdateObjectReference (
509 Info->Parameters[i], Action);
510 }
511 }
512 }
513