reactos/drivers/bus/acpi/acpica/parser/psxface.c

   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 - 2011, 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 #define __PSXFACE_C__
 117
 118 #include "acpi.h"
 119 #include "accommon.h"
 120 #include "acparser.h"
 121 #include "acdispat.h"
 122 #include "acinterp.h"
 123 #include "actables.h"
 124
 125
 126 #define _COMPONENT          ACPI_PARSER
 127         ACPI_MODULE_NAME    ("psxface")
 128
 129 /* Local Prototypes */
 130
 131 static void
 132 AcpiPsStartTrace (
 133     ACPI_EVALUATE_INFO      *Info);
 134
 135 static void
 136 AcpiPsStopTrace (
 137     ACPI_EVALUATE_INFO      *Info);
 138
 139 static void
 140 AcpiPsUpdateParameterList (
 141     ACPI_EVALUATE_INFO      *Info,
 142     UINT16                  Action);
 143
 144
 145 /*******************************************************************************
 146  *
 147  * FUNCTION:    AcpiDebugTrace
 148  *
 149  * PARAMETERS:  MethodName      - Valid ACPI name string
 150  *              DebugLevel      - Optional level mask. 0 to use default
 151  *              DebugLayer      - Optional layer mask. 0 to use default
 152  *              Flags           - bit 1: one shot(1) or persistent(0)
 153  *
 154  * RETURN:      Status
 155  *
 156  * DESCRIPTION: External interface to enable debug tracing during control
 157  *              method execution
 158  *
 159  ******************************************************************************/
 160
 161 ACPI_STATUS
 162 AcpiDebugTrace (
 163     char                    *Name,
 164     UINT32                  DebugLevel,
 165     UINT32                  DebugLayer,
 166     UINT32                  Flags)
 167 {
 168     ACPI_STATUS             Status;
 169
 170
 171     Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
 172     if (ACPI_FAILURE (Status))
 173     {
 174         return (Status);
 175     }
 176
 177     /* TBDs: Validate name, allow full path or just nameseg */
 178
 179     AcpiGbl_TraceMethodName = *ACPI_CAST_PTR (UINT32, Name);
 180     AcpiGbl_TraceFlags = Flags;
 181
 182     if (DebugLevel)
 183     {
 184         AcpiGbl_TraceDbgLevel = DebugLevel;
 185     }
 186     if (DebugLayer)
 187     {
 188         AcpiGbl_TraceDbgLayer = DebugLayer;
 189     }
 190
 191     (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
 192     return (AE_OK);
 193 }
 194
 195
 196 /*******************************************************************************
 197  *
 198  * FUNCTION:    AcpiPsStartTrace
 199  *
 200  * PARAMETERS:  Info        - Method info struct
 201  *
 202  * RETURN:      None
 203  *
 204  * DESCRIPTION: Start control method execution trace
 205  *
 206  ******************************************************************************/
 207
 208 static void
 209 AcpiPsStartTrace (
 210     ACPI_EVALUATE_INFO      *Info)
 211 {
 212     ACPI_STATUS             Status;
 213
 214
 215     ACPI_FUNCTION_ENTRY ();
 216
 217
 218     Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
 219     if (ACPI_FAILURE (Status))
 220     {
 221         return;
 222     }
 223
 224     if ((!AcpiGbl_TraceMethodName) ||
 225         (AcpiGbl_TraceMethodName != Info->ResolvedNode->Name.Integer))
 226     {
 227         goto Exit;
 228     }
 229
 230     AcpiGbl_OriginalDbgLevel = AcpiDbgLevel;
 231     AcpiGbl_OriginalDbgLayer = AcpiDbgLayer;
 232
 233     AcpiDbgLevel = 0x00FFFFFF;
 234     AcpiDbgLayer = ACPI_UINT32_MAX;
 235
 236     if (AcpiGbl_TraceDbgLevel)
 237     {
 238         AcpiDbgLevel = AcpiGbl_TraceDbgLevel;
 239     }
 240     if (AcpiGbl_TraceDbgLayer)
 241     {
 242         AcpiDbgLayer = AcpiGbl_TraceDbgLayer;
 243     }
 244
 245
 246 Exit:
 247     (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
 248 }
 249
 250
 251 /*******************************************************************************
 252  *
 253  * FUNCTION:    AcpiPsStopTrace
 254  *
 255  * PARAMETERS:  Info        - Method info struct
 256  *
 257  * RETURN:      None
 258  *
 259  * DESCRIPTION: Stop control method execution trace
 260  *
 261  ******************************************************************************/
 262
 263 static void
 264 AcpiPsStopTrace (
 265     ACPI_EVALUATE_INFO      *Info)
 266 {
 267     ACPI_STATUS             Status;
 268
 269
 270     ACPI_FUNCTION_ENTRY ();
 271
 272
 273     Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
 274     if (ACPI_FAILURE (Status))
 275     {
 276         return;
 277     }
 278
 279     if ((!AcpiGbl_TraceMethodName) ||
 280         (AcpiGbl_TraceMethodName != Info->ResolvedNode->Name.Integer))
 281     {
 282         goto Exit;
 283     }
 284
 285     /* Disable further tracing if type is one-shot */
 286
 287     if (AcpiGbl_TraceFlags & 1)
 288     {
 289         AcpiGbl_TraceMethodName = 0;
 290         AcpiGbl_TraceDbgLevel = 0;
 291         AcpiGbl_TraceDbgLayer = 0;
 292     }
 293
 294     AcpiDbgLevel = AcpiGbl_OriginalDbgLevel;
 295     AcpiDbgLayer = AcpiGbl_OriginalDbgLayer;
 296
 297 Exit:
 298     (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
 299 }
 300
 301
 302 /*******************************************************************************
 303  *
 304  * FUNCTION:    AcpiPsExecuteMethod
 305  *
 306  * PARAMETERS:  Info            - Method info block, contains:
 307  *                  Node            - Method Node to execute
 308  *                  ObjDesc         - Method object
 309  *                  Parameters      - List of parameters to pass to the method,
 310  *                                    terminated by NULL. Params itself may be
 311  *                                    NULL if no parameters are being passed.
 312  *                  ReturnObject    - Where to put method's return value (if
 313  *                                    any). If NULL, no value is returned.
 314  *                  ParameterType   - Type of Parameter list
 315  *                  ReturnObject    - Where to put method's return value (if
 316  *                                    any). If NULL, no value is returned.
 317  *                  PassNumber      - Parse or execute pass
 318  *
 319  * RETURN:      Status
 320  *
 321  * DESCRIPTION: Execute a control method
 322  *
 323  ******************************************************************************/
 324
 325 ACPI_STATUS
 326 AcpiPsExecuteMethod (
 327     ACPI_EVALUATE_INFO      *Info)
 328 {
 329     ACPI_STATUS             Status;
 330     ACPI_PARSE_OBJECT       *Op;
 331     ACPI_WALK_STATE         *WalkState;
 332
 333
 334     ACPI_FUNCTION_TRACE (PsExecuteMethod);
 335
 336
 337     /* Quick validation of DSDT header */
 338
 339     AcpiTbCheckDsdtHeader ();
 340
 341     /* Validate the Info and method Node */
 342
 343     if (!Info || !Info->ResolvedNode)
 344     {
 345         return_ACPI_STATUS (AE_NULL_ENTRY);
 346     }
 347
 348     /* Init for new method, wait on concurrency semaphore */
 349
 350     Status = AcpiDsBeginMethodExecution (Info->ResolvedNode, Info->ObjDesc, NULL);
 351     if (ACPI_FAILURE (Status))
 352     {
 353         return_ACPI_STATUS (Status);
 354     }
 355
 356     /*
 357      * The caller "owns" the parameters, so give each one an extra reference
 358      */
 359     AcpiPsUpdateParameterList (Info, REF_INCREMENT);
 360
 361     /* Begin tracing if requested */
 362
 363     AcpiPsStartTrace (Info);
 364
 365     /*
 366      * Execute the method. Performs parse simultaneously
 367      */
 368     ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
 369         "**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
 370         Info->ResolvedNode->Name.Ascii, Info->ResolvedNode, Info->ObjDesc));
 371
 372     /* Create and init a Root Node */
 373
 374     Op = AcpiPsCreateScopeOp ();
 375     if (!Op)
 376     {
 377         Status = AE_NO_MEMORY;
 378         goto Cleanup;
 379     }
 380
 381     /* Create and initialize a new walk state */
 382
 383     Info->PassNumber = ACPI_IMODE_EXECUTE;
 384     WalkState = AcpiDsCreateWalkState (
 385                     Info->ObjDesc->Method.OwnerId, NULL, NULL, NULL);
 386     if (!WalkState)
 387     {
 388         Status = AE_NO_MEMORY;
 389         goto Cleanup;
 390     }
 391
 392     Status = AcpiDsInitAmlWalk (WalkState, Op, Info->ResolvedNode,
 393                 Info->ObjDesc->Method.AmlStart,
 394                 Info->ObjDesc->Method.AmlLength, Info, Info->PassNumber);
 395     if (ACPI_FAILURE (Status))
 396     {
 397         AcpiDsDeleteWalkState (WalkState);
 398         goto Cleanup;
 399     }
 400
 401     if (Info->ObjDesc->Method.InfoFlags & ACPI_METHOD_MODULE_LEVEL)
 402     {
 403         WalkState->ParseFlags |= ACPI_PARSE_MODULE_LEVEL;
 404     }
 405
 406     /* Invoke an internal method if necessary */
 407
 408     if (Info->ObjDesc->Method.InfoFlags & ACPI_METHOD_INTERNAL_ONLY)
 409     {
 410         Status = Info->ObjDesc->Method.Dispatch.Implementation (WalkState);
 411         Info->ReturnObject = WalkState->ReturnDesc;
 412
 413         /* Cleanup states */
 414
 415         AcpiDsScopeStackClear (WalkState);
 416         AcpiPsCleanupScope (&WalkState->ParserState);
 417         AcpiDsTerminateControlMethod (WalkState->MethodDesc, WalkState);
 418         AcpiDsDeleteWalkState (WalkState);
 419         goto Cleanup;
 420     }
 421
 422     /*
 423      * Start method evaluation with an implicit return of zero. This is done
 424      * for Windows compatibility.
 425      */
 426     if (AcpiGbl_EnableInterpreterSlack)
 427     {
 428         WalkState->ImplicitReturnObj =
 429             AcpiUtCreateIntegerObject ((UINT64) 0);
 430         if (!WalkState->ImplicitReturnObj)
 431         {
 432             Status = AE_NO_MEMORY;
 433             AcpiDsDeleteWalkState (WalkState);
 434             goto Cleanup;
 435         }
 436     }
 437
 438     /* Parse the AML */
 439
 440     Status = AcpiPsParseAml (WalkState);
 441
 442     /* WalkState was deleted by ParseAml */
 443
 444 Cleanup:
 445     AcpiPsDeleteParseTree (Op);
 446
 447     /* End optional tracing */
 448
 449     AcpiPsStopTrace (Info);
 450
 451     /* Take away the extra reference that we gave the parameters above */
 452
 453     AcpiPsUpdateParameterList (Info, REF_DECREMENT);
 454
 455     /* Exit now if error above */
 456
 457     if (ACPI_FAILURE (Status))
 458     {
 459         return_ACPI_STATUS (Status);
 460     }
 461
 462     /*
 463      * If the method has returned an object, signal this to the caller with
 464      * a control exception code
 465      */
 466     if (Info->ReturnObject)
 467     {
 468         ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Method returned ObjDesc=%p\n",
 469             Info->ReturnObject));
 470         ACPI_DUMP_STACK_ENTRY (Info->ReturnObject);
 471
 472         Status = AE_CTRL_RETURN_VALUE;
 473     }
 474
 475     return_ACPI_STATUS (Status);
 476 }
 477
 478
 479 /*******************************************************************************
 480  *
 481  * FUNCTION:    AcpiPsUpdateParameterList
 482  *
 483  * PARAMETERS:  Info            - See ACPI_EVALUATE_INFO
 484  *                                (Used: ParameterType and Parameters)
 485  *              Action          - Add or Remove reference
 486  *
 487  * RETURN:      Status
 488  *
 489  * DESCRIPTION: Update reference count on all method parameter objects
 490  *
 491  ******************************************************************************/
 492
 493 static void
 494 AcpiPsUpdateParameterList (
 495     ACPI_EVALUATE_INFO      *Info,
 496     UINT16                  Action)
 497 {
 498     UINT32                  i;
 499
 500
 501     if (Info->Parameters)
 502     {
 503         /* Update reference count for each parameter */
 504
 505         for (i = 0; Info->Parameters[i]; i++)
 506         {
 507             /* Ignore errors, just do them all */
 508
 509             (void) AcpiUtUpdateObjectReference (Info->Parameters[i], Action);
 510         }
 511     }
 512 }
 513
 514