evsci.c revision 70243
167754Smsmith/******************************************************************************* 267754Smsmith * 367754Smsmith * Module Name: evsci - System Control Interrupt configuration and 467754Smsmith * legacy to ACPI mode state transition functions 570243Smsmith * $Revision: 68 $ 667754Smsmith * 767754Smsmith ******************************************************************************/ 867754Smsmith 967754Smsmith/****************************************************************************** 1067754Smsmith * 1167754Smsmith * 1. Copyright Notice 1267754Smsmith * 1370243Smsmith * Some or all of this work - Copyright (c) 1999, 2000, 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 6767754Smsmith * make. 6867754Smsmith * 6967754Smsmith * 3.3. Redistribution of Executable. Redistribution in executable form of any 7067754Smsmith * substantial portion of the Covered Code or modification must reproduce the 7167754Smsmith * above Copyright Notice, and the following Disclaimer and Export Compliance 7267754Smsmith * provision in the documentation and/or other materials provided with the 7367754Smsmith * distribution. 7467754Smsmith * 7567754Smsmith * 3.4. Intel retains all right, title, and interest in and to the Original 7667754Smsmith * Intel Code. 7767754Smsmith * 7867754Smsmith * 3.5. Neither the name Intel nor any other trademark owned or controlled by 7967754Smsmith * Intel shall be used in advertising or otherwise to promote the sale, use or 8067754Smsmith * other dealings in products derived from or relating to the Covered Code 8167754Smsmith * without prior written authorization from Intel. 8267754Smsmith * 8367754Smsmith * 4. Disclaimer and Export Compliance 8467754Smsmith * 8567754Smsmith * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 8667754Smsmith * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 8767754Smsmith * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 8867754Smsmith * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 8967754Smsmith * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 9067754Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 9167754Smsmith * PARTICULAR PURPOSE. 9267754Smsmith * 9367754Smsmith * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 9467754Smsmith * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 9567754Smsmith * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 9667754Smsmith * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 9767754Smsmith * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 9867754Smsmith * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 9967754Smsmith * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 10067754Smsmith * LIMITED REMEDY. 10167754Smsmith * 10267754Smsmith * 4.3. Licensee shall not export, either directly or indirectly, any of this 10367754Smsmith * software or system incorporating such software without first obtaining any 10467754Smsmith * required license or other approval from the U. S. Department of Commerce or 10567754Smsmith * any other agency or department of the United States Government. In the 10667754Smsmith * event Licensee exports any such software from the United States or 10767754Smsmith * re-exports any such software from a foreign destination, Licensee shall 10867754Smsmith * ensure that the distribution and export/re-export of the software is in 10967754Smsmith * compliance with all laws, regulations, orders, or other restrictions of the 11067754Smsmith * U.S. Export Administration Regulations. Licensee agrees that neither it nor 11167754Smsmith * any of its subsidiaries will export/re-export any technical data, process, 11267754Smsmith * software, or service, directly or indirectly, to any country for which the 11367754Smsmith * United States government or any agency thereof requires an export license, 11467754Smsmith * other governmental approval, or letter of assurance, without first obtaining 11567754Smsmith * such license, approval or letter. 11667754Smsmith * 11767754Smsmith *****************************************************************************/ 11867754Smsmith 11967754Smsmith#include "acpi.h" 12067754Smsmith#include "acnamesp.h" 12167754Smsmith#include "achware.h" 12267754Smsmith#include "acevents.h" 12367754Smsmith 12467754Smsmith 12567754Smsmith#define _COMPONENT EVENT_HANDLING 12667754Smsmith MODULE_NAME ("evsci") 12767754Smsmith 12867754Smsmith 12967754Smsmith/* 13067754Smsmith * Elements correspond to counts for TMR, NOT_USED, GBL, PWR_BTN, SLP_BTN, RTC, 13167754Smsmith * and GENERAL respectively. These counts are modified by the ACPI interrupt 13267754Smsmith * handler. 13367754Smsmith * 13467754Smsmith * TBD: [Investigate] Note that GENERAL should probably be split out into 13567754Smsmith * one element for each bit in the GPE registers 13667754Smsmith */ 13767754Smsmith 13867754Smsmith 13967754Smsmith/******************************************************************************* 14067754Smsmith * 14167754Smsmith * FUNCTION: AcpiEvSciHandler 14267754Smsmith * 14367754Smsmith * PARAMETERS: Context - Calling Context 14467754Smsmith * 14567754Smsmith * RETURN: Status code indicates whether interrupt was handled. 14667754Smsmith * 14767754Smsmith * DESCRIPTION: Interrupt handler that will figure out what function or 14867754Smsmith * control method to call to deal with a SCI. Installed 14967754Smsmith * using BU interrupt support. 15067754Smsmith * 15167754Smsmith ******************************************************************************/ 15267754Smsmith 15369450Smsmithstatic UINT32 15467754SmsmithAcpiEvSciHandler (void *Context) 15567754Smsmith{ 15667754Smsmith UINT32 InterruptHandled = INTERRUPT_NOT_HANDLED; 15767754Smsmith 15867754Smsmith 15967754Smsmith FUNCTION_TRACE("EvSciHandler"); 16067754Smsmith 16167754Smsmith 16267754Smsmith /* 16367754Smsmith * Make sure that ACPI is enabled by checking SCI_EN. Note that we are 16467754Smsmith * required to treat the SCI interrupt as sharable, level, active low. 16567754Smsmith */ 16669450Smsmith if (!AcpiHwRegisterBitAccess (ACPI_READ, ACPI_MTX_DO_NOT_LOCK, SCI_EN)) 16767754Smsmith { 16867754Smsmith /* ACPI is not enabled; this interrupt cannot be for us */ 16967754Smsmith 17067754Smsmith return_VALUE (INTERRUPT_NOT_HANDLED); 17167754Smsmith } 17267754Smsmith 17367754Smsmith /* 17467754Smsmith * Fixed AcpiEvents: 17567754Smsmith * ------------- 17667754Smsmith * Check for and dispatch any Fixed AcpiEvents that have occurred 17767754Smsmith */ 17867754Smsmith InterruptHandled |= AcpiEvFixedEventDetect (); 17967754Smsmith 18067754Smsmith /* 18167754Smsmith * GPEs: 18267754Smsmith * ----- 18367754Smsmith * Check for and dispatch any GPEs that have occurred 18467754Smsmith */ 18567754Smsmith InterruptHandled |= AcpiEvGpeDetect (); 18667754Smsmith 18767754Smsmith return_VALUE (InterruptHandled); 18867754Smsmith} 18967754Smsmith 19067754Smsmith 19167754Smsmith/****************************************************************************** 19267754Smsmith * 19367754Smsmith * FUNCTION: AcpiEvInstallSciHandler 19467754Smsmith * 19567754Smsmith * PARAMETERS: none 19667754Smsmith * 19767754Smsmith * RETURN: Status 19867754Smsmith * 19967754Smsmith * DESCRIPTION: Installs SCI handler. 20067754Smsmith * 20167754Smsmith ******************************************************************************/ 20267754Smsmith 20367754SmsmithUINT32 20467754SmsmithAcpiEvInstallSciHandler (void) 20567754Smsmith{ 20667754Smsmith UINT32 Except = AE_OK; 20767754Smsmith 20867754Smsmith 20967754Smsmith FUNCTION_TRACE ("EvInstallSciHandler"); 21067754Smsmith 21167754Smsmith 21269450Smsmith Except = AcpiOsInstallInterruptHandler ((UINT32) AcpiGbl_FADT->SciInt, 21367754Smsmith AcpiEvSciHandler, 21467754Smsmith NULL); 21567754Smsmith 21667754Smsmith return_ACPI_STATUS (Except); 21767754Smsmith} 21867754Smsmith 21967754Smsmith 22067754Smsmith/****************************************************************************** 22167754Smsmith 22267754Smsmith * 22367754Smsmith * FUNCTION: AcpiEvRemoveSciHandler 22467754Smsmith * 22567754Smsmith * PARAMETERS: none 22667754Smsmith * 22767754Smsmith * RETURN: E_OK if handler uninstalled OK, E_ERROR if handler was not 22867754Smsmith * installed to begin with 22967754Smsmith * 23067754Smsmith * DESCRIPTION: Restores original status of all fixed event enable bits and 23167754Smsmith * removes SCI handler. 23267754Smsmith * 23367754Smsmith ******************************************************************************/ 23467754Smsmith 23567754SmsmithACPI_STATUS 23667754SmsmithAcpiEvRemoveSciHandler (void) 23767754Smsmith{ 23867754Smsmith FUNCTION_TRACE ("EvRemoveSciHandler"); 23967754Smsmith 24067754Smsmith#if 0 24167754Smsmith /* TBD:[Investigate] Figure this out!! Disable all events first ??? */ 24267754Smsmith 24367754Smsmith if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (TMR_FIXED_EVENT)) 24467754Smsmith { 24567754Smsmith AcpiEventDisableEvent (TMR_FIXED_EVENT); 24667754Smsmith } 24767754Smsmith 24867754Smsmith if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (GBL_FIXED_EVENT)) 24967754Smsmith { 25067754Smsmith AcpiEventDisableEvent (GBL_FIXED_EVENT); 25167754Smsmith } 25267754Smsmith 25367754Smsmith if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (PWR_BTN_FIXED_EVENT)) 25467754Smsmith { 25567754Smsmith AcpiEventDisableEvent (PWR_BTN_FIXED_EVENT); 25667754Smsmith } 25767754Smsmith 25867754Smsmith if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (SLP_BTN_FIXED_EVENT)) 25967754Smsmith { 26067754Smsmith AcpiEventDisableEvent (SLP_BTN_FIXED_EVENT); 26167754Smsmith } 26267754Smsmith 26367754Smsmith if (OriginalFixedEnableBitStatus ^ 1 << AcpiEventIndex (RTC_FIXED_EVENT)) 26467754Smsmith { 26567754Smsmith AcpiEventDisableEvent (RTC_FIXED_EVENT); 26667754Smsmith } 26767754Smsmith 26867754Smsmith OriginalFixedEnableBitStatus = 0; 26967754Smsmith 27067754Smsmith#endif 27167754Smsmith 27269450Smsmith AcpiOsRemoveInterruptHandler ((UINT32) AcpiGbl_FADT->SciInt, 27367754Smsmith AcpiEvSciHandler); 27467754Smsmith 27567754Smsmith return_ACPI_STATUS (AE_OK); 27667754Smsmith} 27767754Smsmith 27867754Smsmith 27967754Smsmith/******************************************************************************* 28067754Smsmith * 28167754Smsmith * FUNCTION: AcpiEvSciCount 28267754Smsmith * 28367754Smsmith * PARAMETERS: Event Event that generated an SCI. 28467754Smsmith * 28567754Smsmith * RETURN: Number of SCI's for requested event since last time 28667754Smsmith * SciOccured() was called for this event. 28767754Smsmith * 28867754Smsmith * DESCRIPTION: Checks to see if SCI has been generated from requested source 28967754Smsmith * since the last time this function was called. 29067754Smsmith * 29167754Smsmith ******************************************************************************/ 29267754Smsmith 29367754Smsmith#ifdef ACPI_DEBUG 29467754Smsmith 29567754SmsmithUINT32 29667754SmsmithAcpiEvSciCount ( 29767754Smsmith UINT32 Event) 29867754Smsmith{ 29967754Smsmith UINT32 Count; 30067754Smsmith 30167754Smsmith FUNCTION_TRACE ("EvSciCount"); 30267754Smsmith 30367754Smsmith /* 30467754Smsmith * Elements correspond to counts for TMR, NOT_USED, GBL, 30567754Smsmith * PWR_BTN, SLP_BTN, RTC, and GENERAL respectively. 30667754Smsmith */ 30767754Smsmith 30867754Smsmith if (Event >= NUM_FIXED_EVENTS) 30967754Smsmith { 31067754Smsmith Count = (UINT32) -1; 31167754Smsmith } 31267754Smsmith else 31367754Smsmith { 31467754Smsmith Count = AcpiGbl_EventCount[Event]; 31567754Smsmith } 31667754Smsmith 31767754Smsmith return_VALUE (Count); 31867754Smsmith} 31967754Smsmith 32067754Smsmith#endif 32167754Smsmith 32267754Smsmith 32367754Smsmith/******************************************************************************* 32467754Smsmith * 32567754Smsmith * FUNCTION: AcpiEvRestoreAcpiState 32667754Smsmith * 32767754Smsmith * PARAMETERS: none 32867754Smsmith * 32967754Smsmith * RETURN: none 33067754Smsmith * 33167754Smsmith * DESCRIPTION: Restore the original ACPI state of the machine 33267754Smsmith * 33367754Smsmith ******************************************************************************/ 33467754Smsmith 33567754Smsmithvoid 33667754SmsmithAcpiEvRestoreAcpiState (void) 33767754Smsmith{ 33867754Smsmith UINT32 Index; 33967754Smsmith 34067754Smsmith 34167754Smsmith FUNCTION_TRACE ("EvRestoreAcpiState"); 34267754Smsmith 34367754Smsmith 34467754Smsmith /* Restore the state of the chipset enable bits. */ 34567754Smsmith 34667754Smsmith if (AcpiGbl_RestoreAcpiChipset == TRUE) 34767754Smsmith { 34867754Smsmith /* Restore the fixed events */ 34967754Smsmith 35069450Smsmith if (AcpiHwRegisterRead (ACPI_MTX_LOCK, PM1_EN) != 35169450Smsmith AcpiGbl_Pm1EnableRegisterSave) 35267754Smsmith { 35369450Smsmith AcpiHwRegisterWrite (ACPI_MTX_LOCK, PM1_EN, 35469450Smsmith AcpiGbl_Pm1EnableRegisterSave); 35567754Smsmith } 35667754Smsmith 35767754Smsmith 35867754Smsmith /* Ensure that all status bits are clear */ 35967754Smsmith 36067754Smsmith AcpiHwClearAcpiStatus (); 36167754Smsmith 36267754Smsmith 36367754Smsmith /* Now restore the GPEs */ 36467754Smsmith 36569450Smsmith for (Index = 0; Index < DIV_2 (AcpiGbl_FADT->Gpe0BlkLen); Index++) 36667754Smsmith { 36769450Smsmith if (AcpiHwRegisterRead (ACPI_MTX_LOCK, GPE0_EN_BLOCK | Index) != 36869450Smsmith AcpiGbl_Gpe0EnableRegisterSave[Index]) 36967754Smsmith { 37069450Smsmith AcpiHwRegisterWrite (ACPI_MTX_LOCK, GPE0_EN_BLOCK | Index, 37169450Smsmith AcpiGbl_Gpe0EnableRegisterSave[Index]); 37267754Smsmith } 37367754Smsmith } 37467754Smsmith 37569450Smsmith /* GPE 1 present? */ 37669450Smsmith 37769450Smsmith if (AcpiGbl_FADT->Gpe1BlkLen) 37867754Smsmith { 37969450Smsmith for (Index = 0; Index < DIV_2 (AcpiGbl_FADT->Gpe1BlkLen); Index++) 38067754Smsmith { 38169450Smsmith if (AcpiHwRegisterRead (ACPI_MTX_LOCK, GPE1_EN_BLOCK | Index) != 38267754Smsmith AcpiGbl_Gpe1EnableRegisterSave[Index]) 38367754Smsmith { 38469450Smsmith AcpiHwRegisterWrite (ACPI_MTX_LOCK, GPE1_EN_BLOCK | Index, 38569450Smsmith AcpiGbl_Gpe1EnableRegisterSave[Index]); 38667754Smsmith } 38767754Smsmith } 38867754Smsmith } 38967754Smsmith 39067754Smsmith if (AcpiHwGetMode() != AcpiGbl_OriginalMode) 39167754Smsmith { 39267754Smsmith AcpiHwSetMode (AcpiGbl_OriginalMode); 39367754Smsmith } 39467754Smsmith } 39567754Smsmith 39667754Smsmith return_VOID; 39767754Smsmith} 39867754Smsmith 39967754Smsmith 40067754Smsmith/****************************************************************************** 40167754Smsmith * 40267754Smsmith * FUNCTION: AcpiEvTerminate 40367754Smsmith * 40467754Smsmith * PARAMETERS: none 40567754Smsmith * 40667754Smsmith * RETURN: none 40767754Smsmith * 40867754Smsmith * DESCRIPTION: free memory allocated for table storage. 40967754Smsmith * 41067754Smsmith ******************************************************************************/ 41167754Smsmith 41267754Smsmithvoid 41367754SmsmithAcpiEvTerminate (void) 41467754Smsmith{ 41567754Smsmith 41667754Smsmith FUNCTION_TRACE ("EvTerminate"); 41767754Smsmith 41867754Smsmith 41967754Smsmith /* 42067754Smsmith * Free global tables, etc. 42167754Smsmith */ 42267754Smsmith 42367754Smsmith if (AcpiGbl_GpeRegisters) 42467754Smsmith { 42567754Smsmith AcpiCmFree (AcpiGbl_GpeRegisters); 42667754Smsmith } 42767754Smsmith 42867754Smsmith if (AcpiGbl_GpeInfo) 42967754Smsmith { 43067754Smsmith AcpiCmFree (AcpiGbl_GpeInfo); 43167754Smsmith } 43267754Smsmith 43367754Smsmith return_VOID; 43467754Smsmith} 43567754Smsmith 43667754Smsmith 437