hwgpe.c revision 91116
171867Smsmith 267754Smsmith/****************************************************************************** 367754Smsmith * 467754Smsmith * Module Name: hwgpe - Low level GPE enable/disable/clear functions 591116Smsmith * $Revision: 39 $ 667754Smsmith * 767754Smsmith *****************************************************************************/ 867754Smsmith 967754Smsmith/****************************************************************************** 1067754Smsmith * 1167754Smsmith * 1. Copyright Notice 1267754Smsmith * 1391116Smsmith * Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp. 1470243Smsmith * All rights reserved. 1567754Smsmith * 1667754Smsmith * 2. License 1767754Smsmith * 1867754Smsmith * 2.1. This is your license from Intel Corp. under its intellectual property 1967754Smsmith * rights. You may have additional license terms from the party that provided 2067754Smsmith * you this software, covering your right to use that party's intellectual 2167754Smsmith * property rights. 2267754Smsmith * 2367754Smsmith * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 2467754Smsmith * copy of the source code appearing in this file ("Covered Code") an 2567754Smsmith * irrevocable, perpetual, worldwide license under Intel's copyrights in the 2667754Smsmith * base code distributed originally by Intel ("Original Intel Code") to copy, 2767754Smsmith * make derivatives, distribute, use and display any portion of the Covered 2867754Smsmith * Code in any form, with the right to sublicense such rights; and 2967754Smsmith * 3067754Smsmith * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 3167754Smsmith * license (with the right to sublicense), under only those claims of Intel 3267754Smsmith * patents that are infringed by the Original Intel Code, to make, use, sell, 3367754Smsmith * offer to sell, and import the Covered Code and derivative works thereof 3467754Smsmith * solely to the minimum extent necessary to exercise the above copyright 3567754Smsmith * license, and in no event shall the patent license extend to any additions 3667754Smsmith * to or modifications of the Original Intel Code. No other license or right 3767754Smsmith * is granted directly or by implication, estoppel or otherwise; 3867754Smsmith * 3967754Smsmith * The above copyright and patent license is granted only if the following 4067754Smsmith * conditions are met: 4167754Smsmith * 4267754Smsmith * 3. Conditions 4367754Smsmith * 4467754Smsmith * 3.1. Redistribution of Source with Rights to Further Distribute Source. 4567754Smsmith * Redistribution of source code of any substantial portion of the Covered 4667754Smsmith * Code or modification with rights to further distribute source must include 4767754Smsmith * the above Copyright Notice, the above License, this list of Conditions, 4867754Smsmith * and the following Disclaimer and Export Compliance provision. In addition, 4967754Smsmith * Licensee must cause all Covered Code to which Licensee contributes to 5067754Smsmith * contain a file documenting the changes Licensee made to create that Covered 5167754Smsmith * Code and the date of any change. Licensee must include in that file the 5267754Smsmith * documentation of any changes made by any predecessor Licensee. Licensee 5367754Smsmith * must include a prominent statement that the modification is derived, 5467754Smsmith * directly or indirectly, from Original Intel Code. 5567754Smsmith * 5667754Smsmith * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 5767754Smsmith * Redistribution of source code of any substantial portion of the Covered 5867754Smsmith * Code or modification without rights to further distribute source must 5967754Smsmith * include the following Disclaimer and Export Compliance provision in the 6067754Smsmith * documentation and/or other materials provided with distribution. In 6167754Smsmith * addition, Licensee may not authorize further sublicense of source of any 6267754Smsmith * portion of the Covered Code, and must include terms to the effect that the 6367754Smsmith * license from Licensee to its licensee is limited to the intellectual 6467754Smsmith * property embodied in the software Licensee provides to its licensee, and 6567754Smsmith * not to intellectual property embodied in modifications its licensee may 6667754Smsmith * make. 6767754Smsmith * 6867754Smsmith * 3.3. Redistribution of Executable. Redistribution in executable form of any 6967754Smsmith * substantial portion of the Covered Code or modification must reproduce the 7067754Smsmith * above Copyright Notice, and the following Disclaimer and Export Compliance 7167754Smsmith * provision in the documentation and/or other materials provided with the 7267754Smsmith * distribution. 7367754Smsmith * 7467754Smsmith * 3.4. Intel retains all right, title, and interest in and to the Original 7567754Smsmith * Intel Code. 7667754Smsmith * 7767754Smsmith * 3.5. Neither the name Intel nor any other trademark owned or controlled by 7867754Smsmith * Intel shall be used in advertising or otherwise to promote the sale, use or 7967754Smsmith * other dealings in products derived from or relating to the Covered Code 8067754Smsmith * without prior written authorization from Intel. 8167754Smsmith * 8267754Smsmith * 4. Disclaimer and Export Compliance 8367754Smsmith * 8467754Smsmith * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 8567754Smsmith * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 8667754Smsmith * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 8767754Smsmith * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 8867754Smsmith * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 8967754Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 9067754Smsmith * PARTICULAR PURPOSE. 9167754Smsmith * 9267754Smsmith * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 9367754Smsmith * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 9467754Smsmith * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 9567754Smsmith * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 9667754Smsmith * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 9767754Smsmith * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 9867754Smsmith * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 9967754Smsmith * LIMITED REMEDY. 10067754Smsmith * 10167754Smsmith * 4.3. Licensee shall not export, either directly or indirectly, any of this 10267754Smsmith * software or system incorporating such software without first obtaining any 10367754Smsmith * required license or other approval from the U. S. Department of Commerce or 10467754Smsmith * any other agency or department of the United States Government. In the 10567754Smsmith * event Licensee exports any such software from the United States or 10667754Smsmith * re-exports any such software from a foreign destination, Licensee shall 10767754Smsmith * ensure that the distribution and export/re-export of the software is in 10867754Smsmith * compliance with all laws, regulations, orders, or other restrictions of the 10967754Smsmith * U.S. Export Administration Regulations. Licensee agrees that neither it nor 11067754Smsmith * any of its subsidiaries will export/re-export any technical data, process, 11167754Smsmith * software, or service, directly or indirectly, to any country for which the 11267754Smsmith * United States government or any agency thereof requires an export license, 11367754Smsmith * other governmental approval, or letter of assurance, without first obtaining 11467754Smsmith * such license, approval or letter. 11567754Smsmith * 11667754Smsmith *****************************************************************************/ 11767754Smsmith 11867754Smsmith#include "acpi.h" 11967754Smsmith#include "achware.h" 12067754Smsmith#include "acnamesp.h" 12167754Smsmith#include "acevents.h" 12267754Smsmith 12377424Smsmith#define _COMPONENT ACPI_HARDWARE 12491116Smsmith ACPI_MODULE_NAME ("hwgpe") 12567754Smsmith 12667754Smsmith 12767754Smsmith/****************************************************************************** 12867754Smsmith * 12991116Smsmith * FUNCTION: AcpiHwGetGpeBitMask 13091116Smsmith * 13191116Smsmith * PARAMETERS: GpeNumber - The GPE 13291116Smsmith * 13391116Smsmith * RETURN: Gpe register bitmask for this gpe level 13491116Smsmith * 13591116Smsmith * DESCRIPTION: Get the bitmask for this GPE 13691116Smsmith * 13791116Smsmith ******************************************************************************/ 13891116Smsmith 13991116SmsmithUINT32 14091116SmsmithAcpiHwGetGpeBitMask ( 14191116Smsmith UINT32 GpeNumber) 14291116Smsmith{ 14391116Smsmith return (AcpiGbl_GpeNumberInfo [AcpiEvGetGpeNumberIndex (GpeNumber)].BitMask); 14491116Smsmith} 14591116Smsmith 14691116Smsmith 14791116Smsmith/****************************************************************************** 14891116Smsmith * 14967754Smsmith * FUNCTION: AcpiHwEnableGpe 15067754Smsmith * 15167754Smsmith * PARAMETERS: GpeNumber - The GPE 15267754Smsmith * 15367754Smsmith * RETURN: None 15467754Smsmith * 15567754Smsmith * DESCRIPTION: Enable a single GPE. 15667754Smsmith * 15767754Smsmith ******************************************************************************/ 15867754Smsmith 15967754Smsmithvoid 16067754SmsmithAcpiHwEnableGpe ( 16167754Smsmith UINT32 GpeNumber) 16267754Smsmith{ 16380062Smsmith UINT32 InByte; 16467754Smsmith UINT32 RegisterIndex; 16580062Smsmith UINT32 BitMask; 16667754Smsmith 16783174Smsmith 16891116Smsmith ACPI_FUNCTION_ENTRY (); 16983174Smsmith 17083174Smsmith 17191116Smsmith /* Translate GPE number to index into global registers array. */ 17267754Smsmith 17391116Smsmith RegisterIndex = AcpiEvGetGpeRegisterIndex (GpeNumber); 17467754Smsmith 17591116Smsmith /* Get the register bitmask for this GPE */ 17691116Smsmith 17791116Smsmith BitMask = AcpiHwGetGpeBitMask (GpeNumber); 17891116Smsmith 17967754Smsmith /* 18067754Smsmith * Read the current value of the register, set the appropriate bit 18167754Smsmith * to enable the GPE, and write out the new register. 18267754Smsmith */ 18380062Smsmith InByte = 0; 18491116Smsmith AcpiOsReadPort (AcpiGbl_GpeRegisterInfo[RegisterIndex].EnableAddr, &InByte, 8); 18591116Smsmith AcpiOsWritePort (AcpiGbl_GpeRegisterInfo[RegisterIndex].EnableAddr, 18691116Smsmith (InByte | BitMask), 8); 18767754Smsmith} 18867754Smsmith 18991116Smsmith 19084491Smsmith/****************************************************************************** 19184491Smsmith * 19284491Smsmith * FUNCTION: AcpiHwEnableGpeForWakeup 19384491Smsmith * 19484491Smsmith * PARAMETERS: GpeNumber - The GPE 19584491Smsmith * 19684491Smsmith * RETURN: None 19784491Smsmith * 19884491Smsmith * DESCRIPTION: Keep track of which GPEs the OS has requested not be 19984491Smsmith * disabled when going to sleep. 20084491Smsmith * 20184491Smsmith ******************************************************************************/ 20267754Smsmith 20384491Smsmithvoid 20484491SmsmithAcpiHwEnableGpeForWakeup ( 20584491Smsmith UINT32 GpeNumber) 20684491Smsmith{ 20784491Smsmith UINT32 RegisterIndex; 20884491Smsmith UINT32 BitMask; 20984491Smsmith 21084491Smsmith 21191116Smsmith ACPI_FUNCTION_ENTRY (); 21284491Smsmith 21384491Smsmith 21491116Smsmith /* Translate GPE number to index into global registers array. */ 21584491Smsmith 21691116Smsmith RegisterIndex = AcpiEvGetGpeRegisterIndex (GpeNumber); 21784491Smsmith 21891116Smsmith /* Get the register bitmask for this GPE */ 21991116Smsmith 22091116Smsmith BitMask = AcpiHwGetGpeBitMask (GpeNumber); 22191116Smsmith 22284491Smsmith /* 22384491Smsmith * Set the bit so we will not disable this when sleeping 22484491Smsmith */ 22591116Smsmith AcpiGbl_GpeRegisterInfo[RegisterIndex].WakeEnable |= BitMask; 22684491Smsmith} 22784491Smsmith 22891116Smsmith 22967754Smsmith/****************************************************************************** 23067754Smsmith * 23167754Smsmith * FUNCTION: AcpiHwDisableGpe 23267754Smsmith * 23367754Smsmith * PARAMETERS: GpeNumber - The GPE 23467754Smsmith * 23567754Smsmith * RETURN: None 23667754Smsmith * 23767754Smsmith * DESCRIPTION: Disable a single GPE. 23867754Smsmith * 23967754Smsmith ******************************************************************************/ 24067754Smsmith 24167754Smsmithvoid 24267754SmsmithAcpiHwDisableGpe ( 24367754Smsmith UINT32 GpeNumber) 24467754Smsmith{ 24580062Smsmith UINT32 InByte; 24667754Smsmith UINT32 RegisterIndex; 24780062Smsmith UINT32 BitMask; 24867754Smsmith 24983174Smsmith 25091116Smsmith ACPI_FUNCTION_ENTRY (); 25183174Smsmith 25283174Smsmith 25391116Smsmith /* Translate GPE number to index into global registers array. */ 25467754Smsmith 25591116Smsmith RegisterIndex = AcpiEvGetGpeRegisterIndex (GpeNumber); 25667754Smsmith 25791116Smsmith /* Get the register bitmask for this GPE */ 25891116Smsmith 25991116Smsmith BitMask = AcpiHwGetGpeBitMask (GpeNumber); 26091116Smsmith 26167754Smsmith /* 26267754Smsmith * Read the current value of the register, clear the appropriate bit, 26367754Smsmith * and write out the new register value to disable the GPE. 26467754Smsmith */ 26580062Smsmith InByte = 0; 26691116Smsmith AcpiOsReadPort (AcpiGbl_GpeRegisterInfo[RegisterIndex].EnableAddr, &InByte, 8); 26791116Smsmith AcpiOsWritePort (AcpiGbl_GpeRegisterInfo[RegisterIndex].EnableAddr, 26880062Smsmith (InByte & ~BitMask), 8); 26984491Smsmith 27084491Smsmith AcpiHwDisableGpeForWakeup(GpeNumber); 27167754Smsmith} 27267754Smsmith 27391116Smsmith 27484491Smsmith/****************************************************************************** 27584491Smsmith * 27684491Smsmith * FUNCTION: AcpiHwDisableGpeForWakeup 27784491Smsmith * 27884491Smsmith * PARAMETERS: GpeNumber - The GPE 27984491Smsmith * 28084491Smsmith * RETURN: None 28184491Smsmith * 28284491Smsmith * DESCRIPTION: Keep track of which GPEs the OS has requested not be 28384491Smsmith * disabled when going to sleep. 28484491Smsmith * 28584491Smsmith ******************************************************************************/ 28667754Smsmith 28784491Smsmithvoid 28884491SmsmithAcpiHwDisableGpeForWakeup ( 28984491Smsmith UINT32 GpeNumber) 29084491Smsmith{ 29184491Smsmith UINT32 RegisterIndex; 29284491Smsmith UINT32 BitMask; 29384491Smsmith 29484491Smsmith 29591116Smsmith ACPI_FUNCTION_ENTRY (); 29684491Smsmith 29784491Smsmith 29891116Smsmith /* Translate GPE number to index into global registers array. */ 29984491Smsmith 30091116Smsmith RegisterIndex = AcpiEvGetGpeRegisterIndex (GpeNumber); 30184491Smsmith 30291116Smsmith /* Get the register bitmask for this GPE */ 30391116Smsmith 30491116Smsmith BitMask = AcpiHwGetGpeBitMask (GpeNumber); 30591116Smsmith 30684491Smsmith /* 30784491Smsmith * Clear the bit so we will disable this when sleeping 30884491Smsmith */ 30991116Smsmith AcpiGbl_GpeRegisterInfo[RegisterIndex].WakeEnable &= ~BitMask; 31084491Smsmith} 31184491Smsmith 31291116Smsmith 31367754Smsmith/****************************************************************************** 31467754Smsmith * 31567754Smsmith * FUNCTION: AcpiHwClearGpe 31667754Smsmith * 31767754Smsmith * PARAMETERS: GpeNumber - The GPE 31867754Smsmith * 31967754Smsmith * RETURN: None 32067754Smsmith * 32167754Smsmith * DESCRIPTION: Clear a single GPE. 32267754Smsmith * 32367754Smsmith ******************************************************************************/ 32467754Smsmith 32567754Smsmithvoid 32667754SmsmithAcpiHwClearGpe ( 32767754Smsmith UINT32 GpeNumber) 32867754Smsmith{ 32967754Smsmith UINT32 RegisterIndex; 33080062Smsmith UINT32 BitMask; 33167754Smsmith 33280062Smsmith 33391116Smsmith ACPI_FUNCTION_ENTRY (); 33483174Smsmith 33583174Smsmith 33691116Smsmith /* Translate GPE number to index into global registers array. */ 33767754Smsmith 33891116Smsmith RegisterIndex = AcpiEvGetGpeRegisterIndex (GpeNumber); 33967754Smsmith 34091116Smsmith /* Get the register bitmask for this GPE */ 34191116Smsmith 34291116Smsmith BitMask = AcpiHwGetGpeBitMask (GpeNumber); 34391116Smsmith 34467754Smsmith /* 34567754Smsmith * Write a one to the appropriate bit in the status register to 34667754Smsmith * clear this GPE. 34767754Smsmith */ 34891116Smsmith AcpiOsWritePort (AcpiGbl_GpeRegisterInfo[RegisterIndex].StatusAddr, BitMask, 8); 34967754Smsmith} 35067754Smsmith 35167754Smsmith 35267754Smsmith/****************************************************************************** 35367754Smsmith * 35467754Smsmith * FUNCTION: AcpiHwGetGpeStatus 35567754Smsmith * 35667754Smsmith * PARAMETERS: GpeNumber - The GPE 35767754Smsmith * 35867754Smsmith * RETURN: None 35967754Smsmith * 36067754Smsmith * DESCRIPTION: Return the status of a single GPE. 36167754Smsmith * 36267754Smsmith ******************************************************************************/ 36367754Smsmith 36467754Smsmithvoid 36567754SmsmithAcpiHwGetGpeStatus ( 36667754Smsmith UINT32 GpeNumber, 36767754Smsmith ACPI_EVENT_STATUS *EventStatus) 36867754Smsmith{ 36980062Smsmith UINT32 InByte = 0; 37067754Smsmith UINT32 RegisterIndex = 0; 37180062Smsmith UINT32 BitMask = 0; 37291116Smsmith ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; 37367754Smsmith 37480062Smsmith 37591116Smsmith ACPI_FUNCTION_ENTRY (); 37683174Smsmith 37783174Smsmith 37867754Smsmith if (!EventStatus) 37967754Smsmith { 38067754Smsmith return; 38167754Smsmith } 38267754Smsmith 38367754Smsmith (*EventStatus) = 0; 38467754Smsmith 38591116Smsmith /* Translate GPE number to index into global registers array. */ 38667754Smsmith 38791116Smsmith RegisterIndex = AcpiEvGetGpeRegisterIndex (GpeNumber); 38891116Smsmith GpeRegisterInfo = &AcpiGbl_GpeRegisterInfo[RegisterIndex]; 38967754Smsmith 39091116Smsmith /* Get the register bitmask for this GPE */ 39191116Smsmith 39291116Smsmith BitMask = AcpiHwGetGpeBitMask (GpeNumber); 39391116Smsmith 39491116Smsmith /* GPE Enabled? */ 39591116Smsmith 39680062Smsmith InByte = 0; 39791116Smsmith AcpiOsReadPort (GpeRegisterInfo->EnableAddr, &InByte, 8); 39867754Smsmith if (BitMask & InByte) 39967754Smsmith { 40067754Smsmith (*EventStatus) |= ACPI_EVENT_FLAG_ENABLED; 40167754Smsmith } 40267754Smsmith 40391116Smsmith /* GPE Enabled for wake? */ 40491116Smsmith 40591116Smsmith if (BitMask & GpeRegisterInfo->WakeEnable) 40684491Smsmith { 40784491Smsmith (*EventStatus) |= ACPI_EVENT_FLAG_WAKE_ENABLED; 40884491Smsmith } 40984491Smsmith 41091116Smsmith /* GPE active (set)? */ 41191116Smsmith 41280062Smsmith InByte = 0; 41391116Smsmith AcpiOsReadPort (GpeRegisterInfo->StatusAddr, &InByte, 8); 41467754Smsmith if (BitMask & InByte) 41567754Smsmith { 41667754Smsmith (*EventStatus) |= ACPI_EVENT_FLAG_SET; 41767754Smsmith } 41867754Smsmith} 41984491Smsmith 42091116Smsmith 42184491Smsmith/****************************************************************************** 42284491Smsmith * 42384491Smsmith * FUNCTION: AcpiHwDisableNonWakeupGpes 42484491Smsmith * 42584491Smsmith * PARAMETERS: None 42684491Smsmith * 42784491Smsmith * RETURN: None 42884491Smsmith * 42984491Smsmith * DESCRIPTION: Disable all non-wakeup GPEs 43084491Smsmith * Call with interrupts disabled. The interrupt handler also 43191116Smsmith * modifies AcpiGbl_GpeRegisterInfo[i].Enable, so it should not be 43284491Smsmith * given the chance to run until after non-wake GPEs are 43384491Smsmith * re-enabled. 43484491Smsmith * 43584491Smsmith ******************************************************************************/ 43684491Smsmith 43784491Smsmithvoid 43884491SmsmithAcpiHwDisableNonWakeupGpes ( 43984491Smsmith void) 44084491Smsmith{ 44184491Smsmith UINT32 i; 44291116Smsmith ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; 44384491Smsmith 44484491Smsmith 44591116Smsmith ACPI_FUNCTION_ENTRY (); 44691116Smsmith 44791116Smsmith 44884491Smsmith for (i = 0; i < AcpiGbl_GpeRegisterCount; i++) 44984491Smsmith { 45091116Smsmith GpeRegisterInfo = &AcpiGbl_GpeRegisterInfo[i]; 45191116Smsmith 45284491Smsmith /* 45384491Smsmith * Read the enabled status of all GPEs. We 45484491Smsmith * will be using it to restore all the GPEs later. 45584491Smsmith */ 45691116Smsmith AcpiOsReadPort (GpeRegisterInfo->EnableAddr, 45791116Smsmith &GpeRegisterInfo->Enable, 8); 45884491Smsmith 45984491Smsmith /* 46091116Smsmith * Disable all GPEs except wakeup GPEs. 46184491Smsmith */ 46291116Smsmith AcpiOsWritePort(GpeRegisterInfo->EnableAddr, 46391116Smsmith GpeRegisterInfo->WakeEnable, 8); 46484491Smsmith } 46584491Smsmith} 46684491Smsmith 46791116Smsmith 46884491Smsmith/****************************************************************************** 46984491Smsmith * 47084491Smsmith * FUNCTION: AcpiHwEnableNonWakeupGpes 47184491Smsmith * 47284491Smsmith * PARAMETERS: None 47384491Smsmith * 47484491Smsmith * RETURN: None 47584491Smsmith * 47684491Smsmith * DESCRIPTION: Enable all non-wakeup GPEs we previously enabled. 47784491Smsmith * 47884491Smsmith ******************************************************************************/ 47984491Smsmith 48084491Smsmithvoid 48184491SmsmithAcpiHwEnableNonWakeupGpes ( 48284491Smsmith void) 48384491Smsmith{ 48484491Smsmith UINT32 i; 48591116Smsmith ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; 48684491Smsmith 48784491Smsmith 48891116Smsmith ACPI_FUNCTION_ENTRY (); 48991116Smsmith 49091116Smsmith 49184491Smsmith for (i = 0; i < AcpiGbl_GpeRegisterCount; i++) 49284491Smsmith { 49391116Smsmith GpeRegisterInfo = &AcpiGbl_GpeRegisterInfo[i]; 49491116Smsmith 49584491Smsmith /* 49684491Smsmith * We previously stored the enabled status of all GPEs. 49784491Smsmith * Blast them back in. 49884491Smsmith */ 49991116Smsmith AcpiOsWritePort(GpeRegisterInfo->EnableAddr, 50091116Smsmith GpeRegisterInfo->Enable, 8); 50184491Smsmith } 50284491Smsmith} 503