evsci.c revision 193341
167754Smsmith/******************************************************************************* 267754Smsmith * 367754Smsmith * Module Name: evsci - System Control Interrupt configuration and 467754Smsmith * legacy to ACPI mode state transition functions 567754Smsmith * 667754Smsmith ******************************************************************************/ 767754Smsmith 867754Smsmith/****************************************************************************** 967754Smsmith * 1067754Smsmith * 1. Copyright Notice 1167754Smsmith * 12193267Sjkim * Some or all of this work - Copyright (c) 1999 - 2009, Intel Corp. 1370243Smsmith * All rights 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 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 118193341Sjkim#include <contrib/dev/acpica/include/acpi.h> 119193341Sjkim#include <contrib/dev/acpica/include/accommon.h> 120193341Sjkim#include <contrib/dev/acpica/include/acevents.h> 12167754Smsmith 12267754Smsmith 12377424Smsmith#define _COMPONENT ACPI_EVENTS 12491116Smsmith ACPI_MODULE_NAME ("evsci") 12567754Smsmith 126151937Sjkim/* Local prototypes */ 12767754Smsmith 128151937Sjkimstatic UINT32 ACPI_SYSTEM_XFACE 129151937SjkimAcpiEvSciXruptHandler ( 130151937Sjkim void *Context); 131151937Sjkim 132151937Sjkim 13367754Smsmith/******************************************************************************* 13467754Smsmith * 135117521Snjl * FUNCTION: AcpiEvSciXruptHandler 13667754Smsmith * 13767754Smsmith * PARAMETERS: Context - Calling Context 13867754Smsmith * 13967754Smsmith * RETURN: Status code indicates whether interrupt was handled. 14067754Smsmith * 14167754Smsmith * DESCRIPTION: Interrupt handler that will figure out what function or 142117521Snjl * control method to call to deal with a SCI. 14367754Smsmith * 14467754Smsmith ******************************************************************************/ 14567754Smsmith 14692388Smsmithstatic UINT32 ACPI_SYSTEM_XFACE 147117521SnjlAcpiEvSciXruptHandler ( 14891116Smsmith void *Context) 14967754Smsmith{ 150117521Snjl ACPI_GPE_XRUPT_INFO *GpeXruptList = Context; 15191116Smsmith UINT32 InterruptHandled = ACPI_INTERRUPT_NOT_HANDLED; 15267754Smsmith 15367754Smsmith 154167802Sjkim ACPI_FUNCTION_TRACE (EvSciXruptHandler); 15567754Smsmith 15667754Smsmith 15767754Smsmith /* 158114237Snjl * We are guaranteed by the ACPI CA initialization/shutdown code that 159114237Snjl * if this interrupt handler is installed, ACPI is enabled. 16067754Smsmith */ 16199679Siwasaki 16267754Smsmith /* 163117521Snjl * Fixed Events: 164117521Snjl * Check for and dispatch any Fixed Events that have occurred 16567754Smsmith */ 16667754Smsmith InterruptHandled |= AcpiEvFixedEventDetect (); 16767754Smsmith 16867754Smsmith /* 169117521Snjl * General Purpose Events: 170117521Snjl * Check for and dispatch any GPEs that have occurred 171117521Snjl */ 172117521Snjl InterruptHandled |= AcpiEvGpeDetect (GpeXruptList); 173117521Snjl 174193267Sjkim AcpiSciCount++; 175151937Sjkim return_UINT32 (InterruptHandled); 176117521Snjl} 177117521Snjl 178117521Snjl 179117521Snjl/******************************************************************************* 180117521Snjl * 181117521Snjl * FUNCTION: AcpiEvGpeXruptHandler 182117521Snjl * 183117521Snjl * PARAMETERS: Context - Calling Context 184117521Snjl * 185117521Snjl * RETURN: Status code indicates whether interrupt was handled. 186117521Snjl * 187117521Snjl * DESCRIPTION: Handler for GPE Block Device interrupts 188117521Snjl * 189117521Snjl ******************************************************************************/ 190117521Snjl 191117521SnjlUINT32 ACPI_SYSTEM_XFACE 192117521SnjlAcpiEvGpeXruptHandler ( 193117521Snjl void *Context) 194117521Snjl{ 195117521Snjl ACPI_GPE_XRUPT_INFO *GpeXruptList = Context; 196117521Snjl UINT32 InterruptHandled = ACPI_INTERRUPT_NOT_HANDLED; 197117521Snjl 198117521Snjl 199167802Sjkim ACPI_FUNCTION_TRACE (EvGpeXruptHandler); 200117521Snjl 201117521Snjl 202117521Snjl /* 203117521Snjl * We are guaranteed by the ACPI CA initialization/shutdown code that 204117521Snjl * if this interrupt handler is installed, ACPI is enabled. 205117521Snjl */ 206117521Snjl 207193267Sjkim /* GPEs: Check for and dispatch any GPEs that have occurred */ 208193267Sjkim 209117521Snjl InterruptHandled |= AcpiEvGpeDetect (GpeXruptList); 21067754Smsmith 211151937Sjkim return_UINT32 (InterruptHandled); 21267754Smsmith} 21367754Smsmith 21467754Smsmith 21567754Smsmith/****************************************************************************** 21667754Smsmith * 21767754Smsmith * FUNCTION: AcpiEvInstallSciHandler 21867754Smsmith * 21967754Smsmith * PARAMETERS: none 22067754Smsmith * 22167754Smsmith * RETURN: Status 22267754Smsmith * 22367754Smsmith * DESCRIPTION: Installs SCI handler. 22467754Smsmith * 22567754Smsmith ******************************************************************************/ 22667754Smsmith 22767754SmsmithUINT32 228151937SjkimAcpiEvInstallSciHandler ( 229151937Sjkim void) 23067754Smsmith{ 23183174Smsmith UINT32 Status = AE_OK; 23267754Smsmith 23367754Smsmith 234167802Sjkim ACPI_FUNCTION_TRACE (EvInstallSciHandler); 23567754Smsmith 23667754Smsmith 237167802Sjkim Status = AcpiOsInstallInterruptHandler ((UINT32) AcpiGbl_FADT.SciInterrupt, 238167802Sjkim AcpiEvSciXruptHandler, AcpiGbl_GpeXruptListHead); 23983174Smsmith return_ACPI_STATUS (Status); 24067754Smsmith} 24167754Smsmith 24267754Smsmith 24367754Smsmith/****************************************************************************** 24467754Smsmith * 24567754Smsmith * FUNCTION: AcpiEvRemoveSciHandler 24667754Smsmith * 24767754Smsmith * PARAMETERS: none 24867754Smsmith * 24967754Smsmith * RETURN: E_OK if handler uninstalled OK, E_ERROR if handler was not 25067754Smsmith * installed to begin with 25167754Smsmith * 252193267Sjkim * DESCRIPTION: Remove the SCI interrupt handler. No further SCIs will be 25391116Smsmith * taken. 25467754Smsmith * 25591116Smsmith * Note: It doesn't seem important to disable all events or set the event 256193267Sjkim * enable registers to their original values. The OS should disable 25791116Smsmith * the SCI interrupt level when the handler is removed, so no more 25891116Smsmith * events will come in. 25991116Smsmith * 26067754Smsmith ******************************************************************************/ 26167754Smsmith 26267754SmsmithACPI_STATUS 263151937SjkimAcpiEvRemoveSciHandler ( 264151937Sjkim void) 26567754Smsmith{ 26699679Siwasaki ACPI_STATUS Status; 26799679Siwasaki 26899679Siwasaki 269167802Sjkim ACPI_FUNCTION_TRACE (EvRemoveSciHandler); 27067754Smsmith 27183174Smsmith 27291116Smsmith /* Just let the OS remove the handler and disable the level */ 27367754Smsmith 274167802Sjkim Status = AcpiOsRemoveInterruptHandler ((UINT32) AcpiGbl_FADT.SciInterrupt, 275167802Sjkim AcpiEvSciXruptHandler); 27667754Smsmith 27799679Siwasaki return_ACPI_STATUS (Status); 27867754Smsmith} 27967754Smsmith 28067754Smsmith 281