hwgpe.c revision 67754
167754Smsmith/****************************************************************************** 267754Smsmith * 367754Smsmith * Module Name: hwgpe - Low level GPE enable/disable/clear functions 467754Smsmith * $Revision: 22 $ 567754Smsmith * 667754Smsmith *****************************************************************************/ 767754Smsmith 867754Smsmith/****************************************************************************** 967754Smsmith * 1067754Smsmith * 1. Copyright Notice 1167754Smsmith * 1267754Smsmith * Some or all of this work - Copyright (c) 1999, Intel Corp. All rights 1367754Smsmith * reserved. 1467754Smsmith * 1567754Smsmith * 2. License 1667754Smsmith * 1767754Smsmith * 2.1. This is your license from Intel Corp. under its intellectual property 1867754Smsmith * rights. You may have additional license terms from the party that provided 1967754Smsmith * you this software, covering your right to use that party's intellectual 2067754Smsmith * property rights. 2167754Smsmith * 2267754Smsmith * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 2367754Smsmith * copy of the source code appearing in this file ("Covered Code") an 2467754Smsmith * irrevocable, perpetual, worldwide license under Intel's copyrights in the 2567754Smsmith * base code distributed originally by Intel ("Original Intel Code") to copy, 2667754Smsmith * make derivatives, distribute, use and display any portion of the Covered 2767754Smsmith * Code in any form, with the right to sublicense such rights; and 2867754Smsmith * 2967754Smsmith * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 3067754Smsmith * license (with the right to sublicense), under only those claims of Intel 3167754Smsmith * patents that are infringed by the Original Intel Code, to make, use, sell, 3267754Smsmith * offer to sell, and import the Covered Code and derivative works thereof 3367754Smsmith * solely to the minimum extent necessary to exercise the above copyright 3467754Smsmith * license, and in no event shall the patent license extend to any additions 3567754Smsmith * to or modifications of the Original Intel Code. No other license or right 3667754Smsmith * is granted directly or by implication, estoppel or otherwise; 3767754Smsmith * 3867754Smsmith * The above copyright and patent license is granted only if the following 3967754Smsmith * conditions are met: 4067754Smsmith * 4167754Smsmith * 3. Conditions 4267754Smsmith * 4367754Smsmith * 3.1. Redistribution of Source with Rights to Further Distribute Source. 4467754Smsmith * Redistribution of source code of any substantial portion of the Covered 4567754Smsmith * Code or modification with rights to further distribute source must include 4667754Smsmith * the above Copyright Notice, the above License, this list of Conditions, 4767754Smsmith * and the following Disclaimer and Export Compliance provision. In addition, 4867754Smsmith * Licensee must cause all Covered Code to which Licensee contributes to 4967754Smsmith * contain a file documenting the changes Licensee made to create that Covered 5067754Smsmith * Code and the date of any change. Licensee must include in that file the 5167754Smsmith * documentation of any changes made by any predecessor Licensee. Licensee 5267754Smsmith * must include a prominent statement that the modification is derived, 5367754Smsmith * directly or indirectly, from Original Intel Code. 5467754Smsmith * 5567754Smsmith * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 5667754Smsmith * Redistribution of source code of any substantial portion of the Covered 5767754Smsmith * Code or modification without rights to further distribute source must 5867754Smsmith * include the following Disclaimer and Export Compliance provision in the 5967754Smsmith * documentation and/or other materials provided with distribution. In 6067754Smsmith * addition, Licensee may not authorize further sublicense of source of any 6167754Smsmith * portion of the Covered Code, and must include terms to the effect that the 6267754Smsmith * license from Licensee to its licensee is limited to the intellectual 6367754Smsmith * property embodied in the software Licensee provides to its licensee, and 6467754Smsmith * not to intellectual property embodied in modifications its licensee may 6567754Smsmith * make. 6667754Smsmith * 6767754Smsmith * 3.3. Redistribution of Executable. Redistribution in executable form of any 6867754Smsmith * substantial portion of the Covered Code or modification must reproduce the 6967754Smsmith * above Copyright Notice, and the following Disclaimer and Export Compliance 7067754Smsmith * provision in the documentation and/or other materials provided with the 7167754Smsmith * distribution. 7267754Smsmith * 7367754Smsmith * 3.4. Intel retains all right, title, and interest in and to the Original 7467754Smsmith * Intel Code. 7567754Smsmith * 7667754Smsmith * 3.5. Neither the name Intel nor any other trademark owned or controlled by 7767754Smsmith * Intel shall be used in advertising or otherwise to promote the sale, use or 7867754Smsmith * other dealings in products derived from or relating to the Covered Code 7967754Smsmith * without prior written authorization from Intel. 8067754Smsmith * 8167754Smsmith * 4. Disclaimer and Export Compliance 8267754Smsmith * 8367754Smsmith * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 8467754Smsmith * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 8567754Smsmith * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 8667754Smsmith * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 8767754Smsmith * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 8867754Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 8967754Smsmith * PARTICULAR PURPOSE. 9067754Smsmith * 9167754Smsmith * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 9267754Smsmith * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 9367754Smsmith * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 9467754Smsmith * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 9567754Smsmith * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 9667754Smsmith * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 9767754Smsmith * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 9867754Smsmith * LIMITED REMEDY. 9967754Smsmith * 10067754Smsmith * 4.3. Licensee shall not export, either directly or indirectly, any of this 10167754Smsmith * software or system incorporating such software without first obtaining any 10267754Smsmith * required license or other approval from the U. S. Department of Commerce or 10367754Smsmith * any other agency or department of the United States Government. In the 10467754Smsmith * event Licensee exports any such software from the United States or 10567754Smsmith * re-exports any such software from a foreign destination, Licensee shall 10667754Smsmith * ensure that the distribution and export/re-export of the software is in 10767754Smsmith * compliance with all laws, regulations, orders, or other restrictions of the 10867754Smsmith * U.S. Export Administration Regulations. Licensee agrees that neither it nor 10967754Smsmith * any of its subsidiaries will export/re-export any technical data, process, 11067754Smsmith * software, or service, directly or indirectly, to any country for which the 11167754Smsmith * United States government or any agency thereof requires an export license, 11267754Smsmith * other governmental approval, or letter of assurance, without first obtaining 11367754Smsmith * such license, approval or letter. 11467754Smsmith * 11567754Smsmith *****************************************************************************/ 11667754Smsmith 11767754Smsmith#include "acpi.h" 11867754Smsmith#include "achware.h" 11967754Smsmith#include "acnamesp.h" 12067754Smsmith#include "acevents.h" 12167754Smsmith 12267754Smsmith#define _COMPONENT HARDWARE 12367754Smsmith MODULE_NAME ("hwgpe") 12467754Smsmith 12567754Smsmith 12667754SmsmithUINT8 DecodeTo8bit [8] = {1,2,4,8,16,32,64,128}; 12767754Smsmith 12867754Smsmith 12967754Smsmith/****************************************************************************** 13067754Smsmith * 13167754Smsmith * FUNCTION: AcpiHwEnableGpe 13267754Smsmith * 13367754Smsmith * PARAMETERS: GpeNumber - The GPE 13467754Smsmith * 13567754Smsmith * RETURN: None 13667754Smsmith * 13767754Smsmith * DESCRIPTION: Enable a single GPE. 13867754Smsmith * 13967754Smsmith ******************************************************************************/ 14067754Smsmith 14167754Smsmithvoid 14267754SmsmithAcpiHwEnableGpe ( 14367754Smsmith UINT32 GpeNumber) 14467754Smsmith{ 14567754Smsmith UINT8 InByte; 14667754Smsmith UINT32 RegisterIndex; 14767754Smsmith UINT8 BitMask; 14867754Smsmith 14967754Smsmith /* 15067754Smsmith * Translate GPE number to index into global registers array. 15167754Smsmith */ 15267754Smsmith RegisterIndex = AcpiGbl_GpeValid[GpeNumber]; 15367754Smsmith 15467754Smsmith /* 15567754Smsmith * Figure out the bit offset for this GPE within the target register. 15667754Smsmith */ 15767754Smsmith BitMask = DecodeTo8bit [MOD_8 (GpeNumber)]; 15867754Smsmith 15967754Smsmith /* 16067754Smsmith * Read the current value of the register, set the appropriate bit 16167754Smsmith * to enable the GPE, and write out the new register. 16267754Smsmith */ 16367754Smsmith InByte = AcpiOsIn8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr); 16467754Smsmith AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr, 16567754Smsmith (UINT8)(InByte | BitMask)); 16667754Smsmith} 16767754Smsmith 16867754Smsmith 16967754Smsmith/****************************************************************************** 17067754Smsmith * 17167754Smsmith * FUNCTION: AcpiHwDisableGpe 17267754Smsmith * 17367754Smsmith * PARAMETERS: GpeNumber - The GPE 17467754Smsmith * 17567754Smsmith * RETURN: None 17667754Smsmith * 17767754Smsmith * DESCRIPTION: Disable a single GPE. 17867754Smsmith * 17967754Smsmith ******************************************************************************/ 18067754Smsmith 18167754Smsmithvoid 18267754SmsmithAcpiHwDisableGpe ( 18367754Smsmith UINT32 GpeNumber) 18467754Smsmith{ 18567754Smsmith UINT8 InByte; 18667754Smsmith UINT32 RegisterIndex; 18767754Smsmith UINT8 BitMask; 18867754Smsmith 18967754Smsmith /* 19067754Smsmith * Translate GPE number to index into global registers array. 19167754Smsmith */ 19267754Smsmith RegisterIndex = AcpiGbl_GpeValid[GpeNumber]; 19367754Smsmith 19467754Smsmith /* 19567754Smsmith * Figure out the bit offset for this GPE within the target register. 19667754Smsmith */ 19767754Smsmith BitMask = DecodeTo8bit [MOD_8 (GpeNumber)]; 19867754Smsmith 19967754Smsmith /* 20067754Smsmith * Read the current value of the register, clear the appropriate bit, 20167754Smsmith * and write out the new register value to disable the GPE. 20267754Smsmith */ 20367754Smsmith InByte = AcpiOsIn8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr); 20467754Smsmith AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr, 20567754Smsmith (UINT8)(InByte & ~BitMask)); 20667754Smsmith} 20767754Smsmith 20867754Smsmith 20967754Smsmith/****************************************************************************** 21067754Smsmith * 21167754Smsmith * FUNCTION: AcpiHwClearGpe 21267754Smsmith * 21367754Smsmith * PARAMETERS: GpeNumber - The GPE 21467754Smsmith * 21567754Smsmith * RETURN: None 21667754Smsmith * 21767754Smsmith * DESCRIPTION: Clear a single GPE. 21867754Smsmith * 21967754Smsmith ******************************************************************************/ 22067754Smsmith 22167754Smsmithvoid 22267754SmsmithAcpiHwClearGpe ( 22367754Smsmith UINT32 GpeNumber) 22467754Smsmith{ 22567754Smsmith UINT32 RegisterIndex; 22667754Smsmith UINT8 BitMask; 22767754Smsmith 22867754Smsmith /* 22967754Smsmith * Translate GPE number to index into global registers array. 23067754Smsmith */ 23167754Smsmith RegisterIndex = AcpiGbl_GpeValid[GpeNumber]; 23267754Smsmith 23367754Smsmith /* 23467754Smsmith * Figure out the bit offset for this GPE within the target register. 23567754Smsmith */ 23667754Smsmith BitMask = DecodeTo8bit [MOD_8 (GpeNumber)]; 23767754Smsmith 23867754Smsmith /* 23967754Smsmith * Write a one to the appropriate bit in the status register to 24067754Smsmith * clear this GPE. 24167754Smsmith */ 24267754Smsmith AcpiOsOut8 (AcpiGbl_GpeRegisters[RegisterIndex].StatusAddr, BitMask); 24367754Smsmith} 24467754Smsmith 24567754Smsmith 24667754Smsmith/****************************************************************************** 24767754Smsmith * 24867754Smsmith * FUNCTION: AcpiHwGetGpeStatus 24967754Smsmith * 25067754Smsmith * PARAMETERS: GpeNumber - The GPE 25167754Smsmith * 25267754Smsmith * RETURN: None 25367754Smsmith * 25467754Smsmith * DESCRIPTION: Return the status of a single GPE. 25567754Smsmith * 25667754Smsmith ******************************************************************************/ 25767754Smsmith 25867754Smsmithvoid 25967754SmsmithAcpiHwGetGpeStatus ( 26067754Smsmith UINT32 GpeNumber, 26167754Smsmith ACPI_EVENT_STATUS *EventStatus) 26267754Smsmith{ 26367754Smsmith UINT8 InByte = 0; 26467754Smsmith UINT32 RegisterIndex = 0; 26567754Smsmith UINT8 BitMask = 0; 26667754Smsmith 26767754Smsmith if (!EventStatus) 26867754Smsmith { 26967754Smsmith return; 27067754Smsmith } 27167754Smsmith 27267754Smsmith (*EventStatus) = 0; 27367754Smsmith 27467754Smsmith /* 27567754Smsmith * Translate GPE number to index into global registers array. 27667754Smsmith */ 27767754Smsmith RegisterIndex = AcpiGbl_GpeValid[GpeNumber]; 27867754Smsmith 27967754Smsmith /* 28067754Smsmith * Figure out the bit offset for this GPE within the target register. 28167754Smsmith */ 28267754Smsmith BitMask = DecodeTo8bit [MOD_8 (GpeNumber)]; 28367754Smsmith 28467754Smsmith /* 28567754Smsmith * Enabled?: 28667754Smsmith */ 28767754Smsmith InByte = AcpiOsIn8 (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr); 28867754Smsmith 28967754Smsmith if (BitMask & InByte) 29067754Smsmith { 29167754Smsmith (*EventStatus) |= ACPI_EVENT_FLAG_ENABLED; 29267754Smsmith } 29367754Smsmith 29467754Smsmith /* 29567754Smsmith * Set? 29667754Smsmith */ 29767754Smsmith InByte = AcpiOsIn8 (AcpiGbl_GpeRegisters[RegisterIndex].StatusAddr); 29867754Smsmith 29967754Smsmith if (BitMask & InByte) 30067754Smsmith { 30167754Smsmith (*EventStatus) |= ACPI_EVENT_FLAG_SET; 30267754Smsmith } 30367754Smsmith} 304