sys/contrib/dev/acpica/source/components/hardware/hwgpe.c

   1 /******************************************************************************
   2  *
   3  * Module Name: hwgpe - Low level GPE enable/disable/clear functions
   4  *
   5  *****************************************************************************/
   6
   7 /******************************************************************************
   8  *
   9  * 1. Copyright Notice
  10  *
  11  * Some or all of this work - Copyright (c) 1999 - 2017, 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 "acevents.h"
 155
 156 #define _COMPONENT          ACPI_HARDWARE
 157         ACPI_MODULE_NAME    ("hwgpe")
 158
 159 #if (!ACPI_REDUCED_HARDWARE) /* Entire module */
 160
 161 /* Local prototypes */
 162
 163 static ACPI_STATUS
 164 AcpiHwEnableWakeupGpeBlock (
 165     ACPI_GPE_XRUPT_INFO     *GpeXruptInfo,
 166     ACPI_GPE_BLOCK_INFO     *GpeBlock,
 167     void                    *Context);
 168
 169 static ACPI_STATUS
 170 AcpiHwGpeEnableWrite (
 171     UINT8                   EnableMask,
 172     ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo);
 173
 174
 175 /******************************************************************************
 176  *
 177  * FUNCTION:    AcpiHwGetGpeRegisterBit
 178  *
 179  * PARAMETERS:  GpeEventInfo        - Info block for the GPE
 180  *
 181  * RETURN:      Register mask with a one in the GPE bit position
 182  *
 183  * DESCRIPTION: Compute the register mask for this GPE. One bit is set in the
 184  *              correct position for the input GPE.
 185  *
 186  ******************************************************************************/
 187
 188 UINT32
 189 AcpiHwGetGpeRegisterBit (
 190     ACPI_GPE_EVENT_INFO     *GpeEventInfo)
 191 {
 192
 193     return ((UINT32) 1 <<
 194         (GpeEventInfo->GpeNumber - GpeEventInfo->RegisterInfo->BaseGpeNumber));
 195 }
 196
 197
 198 /******************************************************************************
 199  *
 200  * FUNCTION:    AcpiHwLowSetGpe
 201  *
 202  * PARAMETERS:  GpeEventInfo        - Info block for the GPE to be disabled
 203  *              Action              - Enable or disable
 204  *
 205  * RETURN:      Status
 206  *
 207  * DESCRIPTION: Enable or disable a single GPE in the parent enable register.
 208  *              The EnableMask field of the involved GPE register must be
 209  *              updated by the caller if necessary.
 210  *
 211  ******************************************************************************/
 212
 213 ACPI_STATUS
 214 AcpiHwLowSetGpe (
 215     ACPI_GPE_EVENT_INFO     *GpeEventInfo,
 216     UINT32                  Action)
 217 {
 218     ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo;
 219     ACPI_STATUS             Status = AE_OK;
 220     UINT64                  EnableMask;
 221     UINT32                  RegisterBit;
 222
 223
 224     ACPI_FUNCTION_ENTRY ();
 225
 226
 227     /* Get the info block for the entire GPE register */
 228
 229     GpeRegisterInfo = GpeEventInfo->RegisterInfo;
 230     if (!GpeRegisterInfo)
 231     {
 232         return (AE_NOT_EXIST);
 233     }
 234
 235     /* Get current value of the enable register that contains this GPE */
 236
 237     Status = AcpiHwRead (&EnableMask, &GpeRegisterInfo->EnableAddress);
 238     if (ACPI_FAILURE (Status))
 239     {
 240         return (Status);
 241     }
 242
 243     /* Set or clear just the bit that corresponds to this GPE */
 244
 245     RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo);
 246     switch (Action)
 247     {
 248     case ACPI_GPE_CONDITIONAL_ENABLE:
 249
 250         /* Only enable if the corresponding EnableMask bit is set */
 251
 252         if (!(RegisterBit & GpeRegisterInfo->EnableMask))
 253         {
 254             return (AE_BAD_PARAMETER);
 255         }
 256
 257         /*lint -fallthrough */
 258
 259     case ACPI_GPE_ENABLE:
 260
 261         ACPI_SET_BIT (EnableMask, RegisterBit);
 262         break;
 263
 264     case ACPI_GPE_DISABLE:
 265
 266         ACPI_CLEAR_BIT (EnableMask, RegisterBit);
 267         break;
 268
 269     default:
 270
 271         ACPI_ERROR ((AE_INFO, "Invalid GPE Action, %u", Action));
 272         return (AE_BAD_PARAMETER);
 273     }
 274
 275     if (!(RegisterBit & GpeRegisterInfo->MaskForRun))
 276     {
 277         /* Write the updated enable mask */
 278
 279         Status = AcpiHwWrite (EnableMask, &GpeRegisterInfo->EnableAddress);
 280     }
 281     return (Status);
 282 }
 283
 284
 285 /******************************************************************************
 286  *
 287  * FUNCTION:    AcpiHwClearGpe
 288  *
 289  * PARAMETERS:  GpeEventInfo        - Info block for the GPE to be cleared
 290  *
 291  * RETURN:      Status
 292  *
 293  * DESCRIPTION: Clear the status bit for a single GPE.
 294  *
 295  ******************************************************************************/
 296
 297 ACPI_STATUS
 298 AcpiHwClearGpe (
 299     ACPI_GPE_EVENT_INFO     *GpeEventInfo)
 300 {
 301     ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo;
 302     ACPI_STATUS             Status;
 303     UINT32                  RegisterBit;
 304
 305
 306     ACPI_FUNCTION_ENTRY ();
 307
 308     /* Get the info block for the entire GPE register */
 309
 310     GpeRegisterInfo = GpeEventInfo->RegisterInfo;
 311     if (!GpeRegisterInfo)
 312     {
 313         return (AE_NOT_EXIST);
 314     }
 315
 316     /*
 317      * Write a one to the appropriate bit in the status register to
 318      * clear this GPE.
 319      */
 320     RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo);
 321
 322     Status = AcpiHwWrite (RegisterBit, &GpeRegisterInfo->StatusAddress);
 323     return (Status);
 324 }
 325
 326
 327 /******************************************************************************
 328  *
 329  * FUNCTION:    AcpiHwGetGpeStatus
 330  *
 331  * PARAMETERS:  GpeEventInfo        - Info block for the GPE to queried
 332  *              EventStatus         - Where the GPE status is returned
 333  *
 334  * RETURN:      Status
 335  *
 336  * DESCRIPTION: Return the status of a single GPE.
 337  *
 338  ******************************************************************************/
 339
 340 ACPI_STATUS
 341 AcpiHwGetGpeStatus (
 342     ACPI_GPE_EVENT_INFO     *GpeEventInfo,
 343     ACPI_EVENT_STATUS       *EventStatus)
 344 {
 345     UINT64                  InByte;
 346     UINT32                  RegisterBit;
 347     ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo;
 348     ACPI_EVENT_STATUS       LocalEventStatus = 0;
 349     ACPI_STATUS             Status;
 350
 351
 352     ACPI_FUNCTION_ENTRY ();
 353
 354
 355     if (!EventStatus)
 356     {
 357         return (AE_BAD_PARAMETER);
 358     }
 359
 360     /* GPE currently handled? */
 361
 362     if (ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) !=
 363         ACPI_GPE_DISPATCH_NONE)
 364     {
 365         LocalEventStatus |= ACPI_EVENT_FLAG_HAS_HANDLER;
 366     }
 367
 368     /* Get the info block for the entire GPE register */
 369
 370     GpeRegisterInfo = GpeEventInfo->RegisterInfo;
 371
 372     /* Get the register bitmask for this GPE */
 373
 374     RegisterBit = AcpiHwGetGpeRegisterBit (GpeEventInfo);
 375
 376     /* GPE currently enabled? (enabled for runtime?) */
 377
 378     if (RegisterBit & GpeRegisterInfo->EnableForRun)
 379     {
 380         LocalEventStatus |= ACPI_EVENT_FLAG_ENABLED;
 381     }
 382
 383     /* GPE currently masked? (masked for runtime?) */
 384
 385     if (RegisterBit & GpeRegisterInfo->MaskForRun)
 386     {
 387         LocalEventStatus |= ACPI_EVENT_FLAG_MASKED;
 388     }
 389
 390     /* GPE enabled for wake? */
 391
 392     if (RegisterBit & GpeRegisterInfo->EnableForWake)
 393     {
 394         LocalEventStatus |= ACPI_EVENT_FLAG_WAKE_ENABLED;
 395     }
 396
 397     /* GPE currently enabled (enable bit == 1)? */
 398
 399     Status = AcpiHwRead (&InByte, &GpeRegisterInfo->EnableAddress);
 400     if (ACPI_FAILURE (Status))
 401     {
 402         return (Status);
 403     }
 404
 405     if (RegisterBit & InByte)
 406     {
 407         LocalEventStatus |= ACPI_EVENT_FLAG_ENABLE_SET;
 408     }
 409
 410     /* GPE currently active (status bit == 1)? */
 411
 412     Status = AcpiHwRead (&InByte, &GpeRegisterInfo->StatusAddress);
 413     if (ACPI_FAILURE (Status))
 414     {
 415         return (Status);
 416     }
 417
 418     if (RegisterBit & InByte)
 419     {
 420         LocalEventStatus |= ACPI_EVENT_FLAG_STATUS_SET;
 421     }
 422
 423     /* Set return value */
 424
 425     (*EventStatus) = LocalEventStatus;
 426     return (AE_OK);
 427 }
 428
 429
 430 /******************************************************************************
 431  *
 432  * FUNCTION:    AcpiHwGpeEnableWrite
 433  *
 434  * PARAMETERS:  EnableMask          - Bit mask to write to the GPE register
 435  *              GpeRegisterInfo     - Gpe Register info
 436  *
 437  * RETURN:      Status
 438  *
 439  * DESCRIPTION: Write the enable mask byte to the given GPE register.
 440  *
 441  ******************************************************************************/
 442
 443 static ACPI_STATUS
 444 AcpiHwGpeEnableWrite (
 445     UINT8                   EnableMask,
 446     ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo)
 447 {
 448     ACPI_STATUS             Status;
 449
 450
 451     GpeRegisterInfo->EnableMask = EnableMask;
 452
 453     Status = AcpiHwWrite (EnableMask, &GpeRegisterInfo->EnableAddress);
 454     return (Status);
 455 }
 456
 457
 458 /******************************************************************************
 459  *
 460  * FUNCTION:    AcpiHwDisableGpeBlock
 461  *
 462  * PARAMETERS:  GpeXruptInfo        - GPE Interrupt info
 463  *              GpeBlock            - Gpe Block info
 464  *
 465  * RETURN:      Status
 466  *
 467  * DESCRIPTION: Disable all GPEs within a single GPE block
 468  *
 469  ******************************************************************************/
 470
 471 ACPI_STATUS
 472 AcpiHwDisableGpeBlock (
 473     ACPI_GPE_XRUPT_INFO     *GpeXruptInfo,
 474     ACPI_GPE_BLOCK_INFO     *GpeBlock,
 475     void                    *Context)
 476 {
 477     UINT32                  i;
 478     ACPI_STATUS             Status;
 479
 480
 481     /* Examine each GPE Register within the block */
 482
 483     for (i = 0; i < GpeBlock->RegisterCount; i++)
 484     {
 485         /* Disable all GPEs in this register */
 486
 487         Status = AcpiHwGpeEnableWrite (0x00, &GpeBlock->RegisterInfo[i]);
 488         if (ACPI_FAILURE (Status))
 489         {
 490             return (Status);
 491         }
 492     }
 493
 494     return (AE_OK);
 495 }
 496
 497
 498 /******************************************************************************
 499  *
 500  * FUNCTION:    AcpiHwClearGpeBlock
 501  *
 502  * PARAMETERS:  GpeXruptInfo        - GPE Interrupt info
 503  *              GpeBlock            - Gpe Block info
 504  *
 505  * RETURN:      Status
 506  *
 507  * DESCRIPTION: Clear status bits for all GPEs within a single GPE block
 508  *
 509  ******************************************************************************/
 510
 511 ACPI_STATUS
 512 AcpiHwClearGpeBlock (
 513     ACPI_GPE_XRUPT_INFO     *GpeXruptInfo,
 514     ACPI_GPE_BLOCK_INFO     *GpeBlock,
 515     void                    *Context)
 516 {
 517     UINT32                  i;
 518     ACPI_STATUS             Status;
 519
 520
 521     /* Examine each GPE Register within the block */
 522
 523     for (i = 0; i < GpeBlock->RegisterCount; i++)
 524     {
 525         /* Clear status on all GPEs in this register */
 526
 527         Status = AcpiHwWrite (0xFF, &GpeBlock->RegisterInfo[i].StatusAddress);
 528         if (ACPI_FAILURE (Status))
 529         {
 530             return (Status);
 531         }
 532     }
 533
 534     return (AE_OK);
 535 }
 536
 537
 538 /******************************************************************************
 539  *
 540  * FUNCTION:    AcpiHwEnableRuntimeGpeBlock
 541  *
 542  * PARAMETERS:  GpeXruptInfo        - GPE Interrupt info
 543  *              GpeBlock            - Gpe Block info
 544  *
 545  * RETURN:      Status
 546  *
 547  * DESCRIPTION: Enable all "runtime" GPEs within a single GPE block. Includes
 548  *              combination wake/run GPEs.
 549  *
 550  ******************************************************************************/
 551
 552 ACPI_STATUS
 553 AcpiHwEnableRuntimeGpeBlock (
 554     ACPI_GPE_XRUPT_INFO     *GpeXruptInfo,
 555     ACPI_GPE_BLOCK_INFO     *GpeBlock,
 556     void                    *Context)
 557 {
 558     UINT32                  i;
 559     ACPI_STATUS             Status;
 560     ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo;
 561     UINT8                   EnableMask;
 562
 563
 564     /* NOTE: assumes that all GPEs are currently disabled */
 565
 566     /* Examine each GPE Register within the block */
 567
 568     for (i = 0; i < GpeBlock->RegisterCount; i++)
 569     {
 570         GpeRegisterInfo = &GpeBlock->RegisterInfo[i];
 571         if (!GpeRegisterInfo->EnableForRun)
 572         {
 573             continue;
 574         }
 575
 576         /* Enable all "runtime" GPEs in this register */
 577
 578         EnableMask = GpeRegisterInfo->EnableForRun &
 579             ~GpeRegisterInfo->MaskForRun;
 580         Status = AcpiHwGpeEnableWrite (EnableMask, GpeRegisterInfo);
 581         if (ACPI_FAILURE (Status))
 582         {
 583             return (Status);
 584         }
 585     }
 586
 587     return (AE_OK);
 588 }
 589
 590
 591 /******************************************************************************
 592  *
 593  * FUNCTION:    AcpiHwEnableWakeupGpeBlock
 594  *
 595  * PARAMETERS:  GpeXruptInfo        - GPE Interrupt info
 596  *              GpeBlock            - Gpe Block info
 597  *
 598  * RETURN:      Status
 599  *
 600  * DESCRIPTION: Enable all "wake" GPEs within a single GPE block. Includes
 601  *              combination wake/run GPEs.
 602  *
 603  ******************************************************************************/
 604
 605 static ACPI_STATUS
 606 AcpiHwEnableWakeupGpeBlock (
 607     ACPI_GPE_XRUPT_INFO     *GpeXruptInfo,
 608     ACPI_GPE_BLOCK_INFO     *GpeBlock,
 609     void                    *Context)
 610 {
 611     UINT32                  i;
 612     ACPI_STATUS             Status;
 613     ACPI_GPE_REGISTER_INFO  *GpeRegisterInfo;
 614
 615
 616     /* Examine each GPE Register within the block */
 617
 618     for (i = 0; i < GpeBlock->RegisterCount; i++)
 619     {
 620         GpeRegisterInfo = &GpeBlock->RegisterInfo[i];
 621
 622         /*
 623          * Enable all "wake" GPEs in this register and disable the
 624          * remaining ones.
 625          */
 626         Status = AcpiHwGpeEnableWrite (GpeRegisterInfo->EnableForWake,
 627             GpeRegisterInfo);
 628         if (ACPI_FAILURE (Status))
 629         {
 630             return (Status);
 631         }
 632     }
 633
 634     return (AE_OK);
 635 }
 636
 637
 638 /******************************************************************************
 639  *
 640  * FUNCTION:    AcpiHwDisableAllGpes
 641  *
 642  * PARAMETERS:  None
 643  *
 644  * RETURN:      Status
 645  *
 646  * DESCRIPTION: Disable and clear all GPEs in all GPE blocks
 647  *
 648  ******************************************************************************/
 649
 650 ACPI_STATUS
 651 AcpiHwDisableAllGpes (
 652     void)
 653 {
 654     ACPI_STATUS             Status;
 655
 656
 657     ACPI_FUNCTION_TRACE (HwDisableAllGpes);
 658
 659
 660     Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, NULL);
 661     Status = AcpiEvWalkGpeList (AcpiHwClearGpeBlock, NULL);
 662     return_ACPI_STATUS (Status);
 663 }
 664
 665
 666 /******************************************************************************
 667  *
 668  * FUNCTION:    AcpiHwEnableAllRuntimeGpes
 669  *
 670  * PARAMETERS:  None
 671  *
 672  * RETURN:      Status
 673  *
 674  * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
 675  *
 676  ******************************************************************************/
 677
 678 ACPI_STATUS
 679 AcpiHwEnableAllRuntimeGpes (
 680     void)
 681 {
 682     ACPI_STATUS             Status;
 683
 684
 685     ACPI_FUNCTION_TRACE (HwEnableAllRuntimeGpes);
 686
 687
 688     Status = AcpiEvWalkGpeList (AcpiHwEnableRuntimeGpeBlock, NULL);
 689     return_ACPI_STATUS (Status);
 690 }
 691
 692
 693 /******************************************************************************
 694  *
 695  * FUNCTION:    AcpiHwEnableAllWakeupGpes
 696  *
 697  * PARAMETERS:  None
 698  *
 699  * RETURN:      Status
 700  *
 701  * DESCRIPTION: Enable all "wakeup" GPEs, in all GPE blocks
 702  *
 703  ******************************************************************************/
 704
 705 ACPI_STATUS
 706 AcpiHwEnableAllWakeupGpes (
 707     void)
 708 {
 709     ACPI_STATUS             Status;
 710
 711
 712     ACPI_FUNCTION_TRACE (HwEnableAllWakeupGpes);
 713
 714
 715     Status = AcpiEvWalkGpeList (AcpiHwEnableWakeupGpeBlock, NULL);
 716     return_ACPI_STATUS (Status);
 717 }
 718
 719 #endif /* !ACPI_REDUCED_HARDWARE */