hwgpe.c revision 71867
171867Smsmith 267754Smsmith/****************************************************************************** 367754Smsmith * 467754Smsmith * Module Name: hwgpe - Low level GPE enable/disable/clear functions 571867Smsmith * $Revision: 28 $ 667754Smsmith * 767754Smsmith *****************************************************************************/ 867754Smsmith 967754Smsmith/****************************************************************************** 1067754Smsmith * 1167754Smsmith * 1. Copyright Notice 1267754Smsmith * 1371867Smsmith * Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 12367754Smsmith#define _COMPONENT HARDWARE 12467754Smsmith MODULE_NAME ("hwgpe") 12567754Smsmith 12667754Smsmith 12767754Smsmith/****************************************************************************** 12867754Smsmith * 12967754Smsmith * FUNCTION: AcpiHwEnableGpe 13067754Smsmith * 13167754Smsmith * PARAMETERS: GpeNumber - The GPE 13267754Smsmith * 13367754Smsmith * RETURN: None 13467754Smsmith * 13567754Smsmith * DESCRIPTION: Enable a single GPE. 13667754Smsmith * 13767754Smsmith ******************************************************************************/ 13867754Smsmith 13967754Smsmithvoid 14067754SmsmithAcpiHwEnableGpe ( 14167754Smsmith UINT32 GpeNumber) 14267754Smsmith{ 14367754Smsmith UINT8 InByte; 14467754Smsmith UINT32 RegisterIndex; 14567754Smsmith UINT8 BitMask; 14667754Smsmith 14767754Smsmith /* 14867754Smsmith * Translate GPE number to index into global registers array. 14967754Smsmith */ 15067754Smsmith RegisterIndex = AcpiGbl_GpeValid[GpeNumber]; 15167754Smsmith 15267754Smsmith /* 15367754Smsmith * Figure out the bit offset for this GPE within the target register. 15467754Smsmith */ 15569450Smsmith BitMask = AcpiGbl_DecodeTo8bit [MOD_8 (GpeNumber)]; 15667754Smsmith 15767754Smsmith /* 15867754Smsmith * Read the current value of the register, set the appropriate bit 15967754Smsmith * to enable the GPE, and write out the new register. 16067754Smsmith */ 16167754Smsmith InByte = AcpiOsIn8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr); 16267754Smsmith AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr, 16367754Smsmith (UINT8)(InByte | BitMask)); 16467754Smsmith} 16567754Smsmith 16667754Smsmith 16767754Smsmith/****************************************************************************** 16867754Smsmith * 16967754Smsmith * FUNCTION: AcpiHwDisableGpe 17067754Smsmith * 17167754Smsmith * PARAMETERS: GpeNumber - The GPE 17267754Smsmith * 17367754Smsmith * RETURN: None 17467754Smsmith * 17567754Smsmith * DESCRIPTION: Disable a single GPE. 17667754Smsmith * 17767754Smsmith ******************************************************************************/ 17867754Smsmith 17967754Smsmithvoid 18067754SmsmithAcpiHwDisableGpe ( 18167754Smsmith UINT32 GpeNumber) 18267754Smsmith{ 18367754Smsmith UINT8 InByte; 18467754Smsmith UINT32 RegisterIndex; 18567754Smsmith UINT8 BitMask; 18667754Smsmith 18767754Smsmith /* 18867754Smsmith * Translate GPE number to index into global registers array. 18967754Smsmith */ 19067754Smsmith RegisterIndex = AcpiGbl_GpeValid[GpeNumber]; 19167754Smsmith 19267754Smsmith /* 19367754Smsmith * Figure out the bit offset for this GPE within the target register. 19467754Smsmith */ 19569450Smsmith BitMask = AcpiGbl_DecodeTo8bit [MOD_8 (GpeNumber)]; 19667754Smsmith 19767754Smsmith /* 19867754Smsmith * Read the current value of the register, clear the appropriate bit, 19967754Smsmith * and write out the new register value to disable the GPE. 20067754Smsmith */ 20167754Smsmith InByte = AcpiOsIn8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr); 20267754Smsmith AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr, 20367754Smsmith (UINT8)(InByte & ~BitMask)); 20467754Smsmith} 20567754Smsmith 20667754Smsmith 20767754Smsmith/****************************************************************************** 20867754Smsmith * 20967754Smsmith * FUNCTION: AcpiHwClearGpe 21067754Smsmith * 21167754Smsmith * PARAMETERS: GpeNumber - The GPE 21267754Smsmith * 21367754Smsmith * RETURN: None 21467754Smsmith * 21567754Smsmith * DESCRIPTION: Clear a single GPE. 21667754Smsmith * 21767754Smsmith ******************************************************************************/ 21867754Smsmith 21967754Smsmithvoid 22067754SmsmithAcpiHwClearGpe ( 22167754Smsmith UINT32 GpeNumber) 22267754Smsmith{ 22367754Smsmith UINT32 RegisterIndex; 22467754Smsmith UINT8 BitMask; 22567754Smsmith 22667754Smsmith /* 22767754Smsmith * Translate GPE number to index into global registers array. 22867754Smsmith */ 22967754Smsmith RegisterIndex = AcpiGbl_GpeValid[GpeNumber]; 23067754Smsmith 23167754Smsmith /* 23267754Smsmith * Figure out the bit offset for this GPE within the target register. 23367754Smsmith */ 23469450Smsmith BitMask = AcpiGbl_DecodeTo8bit [MOD_8 (GpeNumber)]; 23567754Smsmith 23667754Smsmith /* 23767754Smsmith * Write a one to the appropriate bit in the status register to 23867754Smsmith * clear this GPE. 23967754Smsmith */ 24067754Smsmith AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].StatusAddr, BitMask); 24167754Smsmith} 24267754Smsmith 24367754Smsmith 24467754Smsmith/****************************************************************************** 24567754Smsmith * 24667754Smsmith * FUNCTION: AcpiHwGetGpeStatus 24767754Smsmith * 24867754Smsmith * PARAMETERS: GpeNumber - The GPE 24967754Smsmith * 25067754Smsmith * RETURN: None 25167754Smsmith * 25267754Smsmith * DESCRIPTION: Return the status of a single GPE. 25367754Smsmith * 25467754Smsmith ******************************************************************************/ 25567754Smsmith 25667754Smsmithvoid 25767754SmsmithAcpiHwGetGpeStatus ( 25867754Smsmith UINT32 GpeNumber, 25967754Smsmith ACPI_EVENT_STATUS *EventStatus) 26067754Smsmith{ 26167754Smsmith UINT8 InByte = 0; 26267754Smsmith UINT32 RegisterIndex = 0; 26367754Smsmith UINT8 BitMask = 0; 26467754Smsmith 26567754Smsmith if (!EventStatus) 26667754Smsmith { 26767754Smsmith return; 26867754Smsmith } 26967754Smsmith 27067754Smsmith (*EventStatus) = 0; 27167754Smsmith 27267754Smsmith /* 27367754Smsmith * Translate GPE number to index into global registers array. 27467754Smsmith */ 27567754Smsmith RegisterIndex = AcpiGbl_GpeValid[GpeNumber]; 27667754Smsmith 27767754Smsmith /* 27867754Smsmith * Figure out the bit offset for this GPE within the target register. 27967754Smsmith */ 28069450Smsmith BitMask = AcpiGbl_DecodeTo8bit [MOD_8 (GpeNumber)]; 28167754Smsmith 28267754Smsmith /* 28367754Smsmith * Enabled?: 28467754Smsmith */ 28567754Smsmith InByte = AcpiOsIn8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr); 28667754Smsmith 28767754Smsmith if (BitMask & InByte) 28867754Smsmith { 28967754Smsmith (*EventStatus) |= ACPI_EVENT_FLAG_ENABLED; 29067754Smsmith } 29167754Smsmith 29267754Smsmith /* 29367754Smsmith * Set? 29467754Smsmith */ 29567754Smsmith InByte = AcpiOsIn8 (AcpiGbl_GpeRegisters[RegisterIndex].StatusAddr); 29667754Smsmith 29767754Smsmith if (BitMask & InByte) 29867754Smsmith { 29967754Smsmith (*EventStatus) |= ACPI_EVENT_FLAG_SET; 30067754Smsmith } 30167754Smsmith} 302