| 0,0 → 1,594 |
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| |
| /****************************************************************************** |
| * |
| * Module Name: hwgpe - Low level GPE enable/disable/clear functions |
| * |
| *****************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. |
| * All rights reserved. |
| * |
| * 2. License |
| * |
| * 2.1. This is your license from Intel Corp. under its intellectual property |
| * rights. You may have additional license terms from the party that provided |
| * you this software, covering your right to use that party's intellectual |
| * property rights. |
| * |
| * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
| * copy of the source code appearing in this file ("Covered Code") an |
| * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
| * base code distributed originally by Intel ("Original Intel Code") to copy, |
| * make derivatives, distribute, use and display any portion of the Covered |
| * Code in any form, with the right to sublicense such rights; and |
| * |
| * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
| * license (with the right to sublicense), under only those claims of Intel |
| * patents that are infringed by the Original Intel Code, to make, use, sell, |
| * offer to sell, and import the Covered Code and derivative works thereof |
| * solely to the minimum extent necessary to exercise the above copyright |
| * license, and in no event shall the patent license extend to any additions |
| * to or modifications of the Original Intel Code. No other license or right |
| * is granted directly or by implication, estoppel or otherwise; |
| * |
| * The above copyright and patent license is granted only if the following |
| * conditions are met: |
| * |
| * 3. Conditions |
| * |
| * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification with rights to further distribute source must include |
| * the above Copyright Notice, the above License, this list of Conditions, |
| * and the following Disclaimer and Export Compliance provision. In addition, |
| * Licensee must cause all Covered Code to which Licensee contributes to |
| * contain a file documenting the changes Licensee made to create that Covered |
| * Code and the date of any change. Licensee must include in that file the |
| * documentation of any changes made by any predecessor Licensee. Licensee |
| * must include a prominent statement that the modification is derived, |
| * directly or indirectly, from Original Intel Code. |
| * |
| * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification without rights to further distribute source must |
| * include the following Disclaimer and Export Compliance provision in the |
| * documentation and/or other materials provided with distribution. In |
| * addition, Licensee may not authorize further sublicense of source of any |
| * portion of the Covered Code, and must include terms to the effect that the |
| * license from Licensee to its licensee is limited to the intellectual |
| * property embodied in the software Licensee provides to its licensee, and |
| * not to intellectual property embodied in modifications its licensee may |
| * make. |
| * |
| * 3.3. Redistribution of Executable. Redistribution in executable form of any |
| * substantial portion of the Covered Code or modification must reproduce the |
| * above Copyright Notice, and the following Disclaimer and Export Compliance |
| * provision in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3.4. Intel retains all right, title, and interest in and to the Original |
| * Intel Code. |
| * |
| * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
| * Intel shall be used in advertising or otherwise to promote the sale, use or |
| * other dealings in products derived from or relating to the Covered Code |
| * without prior written authorization from Intel. |
| * |
| * 4. Disclaimer and Export Compliance |
| * |
| * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
| * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
| * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
| * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
| * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
| * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
| * PARTICULAR PURPOSE. |
| * |
| * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
| * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
| * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
| * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
| * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
| * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
| * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
| * LIMITED REMEDY. |
| * |
| * 4.3. Licensee shall not export, either directly or indirectly, any of this |
| * software or system incorporating such software without first obtaining any |
| * required license or other approval from the U. S. Department of Commerce or |
| * any other agency or department of the United States Government. In the |
| * event Licensee exports any such software from the United States or |
| * re-exports any such software from a foreign destination, Licensee shall |
| * ensure that the distribution and export/re-export of the software is in |
| * compliance with all laws, regulations, orders, or other restrictions of the |
| * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
| * any of its subsidiaries will export/re-export any technical data, process, |
| * software, or service, directly or indirectly, to any country for which the |
| * United States government or any agency thereof requires an export license, |
| * other governmental approval, or letter of assurance, without first obtaining |
| * such license, approval or letter. |
| * |
| *****************************************************************************/ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acevents.h" |
| |
| #define _COMPONENT ACPI_HARDWARE |
| ACPI_MODULE_NAME ("hwgpe") |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| AcpiHwEnableWakeupGpeBlock ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Context); |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwLowDisableGpe |
| * |
| * PARAMETERS: GpeEventInfo - Info block for the GPE to be disabled |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Disable a single GPE in the enable register. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiHwLowDisableGpe ( |
| ACPI_GPE_EVENT_INFO *GpeEventInfo) |
| { |
| ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; |
| ACPI_STATUS Status; |
| UINT32 EnableMask; |
| |
| |
| /* Get the info block for the entire GPE register */ |
| |
| GpeRegisterInfo = GpeEventInfo->RegisterInfo; |
| if (!GpeRegisterInfo) |
| { |
| return (AE_NOT_EXIST); |
| } |
| |
| /* Get current value of the enable register that contains this GPE */ |
| |
| Status = AcpiHwRead (&EnableMask, &GpeRegisterInfo->EnableAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| /* Clear just the bit that corresponds to this GPE */ |
| |
| ACPI_CLEAR_BIT (EnableMask, ((UINT32) 1 << |
| (GpeEventInfo->GpeNumber - GpeRegisterInfo->BaseGpeNumber))); |
| |
| |
| /* Write the updated enable mask */ |
| |
| Status = AcpiHwWrite (EnableMask, &GpeRegisterInfo->EnableAddress); |
| return (Status); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwWriteGpeEnableReg |
| * |
| * PARAMETERS: GpeEventInfo - Info block for the GPE to be enabled |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Write a GPE enable register. Note: The bit for this GPE must |
| * already be cleared or set in the parent register |
| * EnableForRun mask. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiHwWriteGpeEnableReg ( |
| ACPI_GPE_EVENT_INFO *GpeEventInfo) |
| { |
| ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| /* Get the info block for the entire GPE register */ |
| |
| GpeRegisterInfo = GpeEventInfo->RegisterInfo; |
| if (!GpeRegisterInfo) |
| { |
| return (AE_NOT_EXIST); |
| } |
| |
| /* Write the entire GPE (runtime) enable register */ |
| |
| Status = AcpiHwWrite (GpeRegisterInfo->EnableForRun, |
| &GpeRegisterInfo->EnableAddress); |
| |
| return (Status); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwClearGpe |
| * |
| * PARAMETERS: GpeEventInfo - Info block for the GPE to be cleared |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Clear the status bit for a single GPE. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiHwClearGpe ( |
| ACPI_GPE_EVENT_INFO *GpeEventInfo) |
| { |
| ACPI_STATUS Status; |
| UINT8 RegisterBit; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| RegisterBit = (UINT8) (1 << |
| (GpeEventInfo->GpeNumber - GpeEventInfo->RegisterInfo->BaseGpeNumber)); |
| |
| /* |
| * Write a one to the appropriate bit in the status register to |
| * clear this GPE. |
| */ |
| Status = AcpiHwWrite (RegisterBit, |
| &GpeEventInfo->RegisterInfo->StatusAddress); |
| |
| return (Status); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwGetGpeStatus |
| * |
| * PARAMETERS: GpeEventInfo - Info block for the GPE to queried |
| * EventStatus - Where the GPE status is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Return the status of a single GPE. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiHwGetGpeStatus ( |
| ACPI_GPE_EVENT_INFO *GpeEventInfo, |
| ACPI_EVENT_STATUS *EventStatus) |
| { |
| UINT32 InByte; |
| UINT8 RegisterBit; |
| ACPI_GPE_REGISTER_INFO *GpeRegisterInfo; |
| ACPI_STATUS Status; |
| ACPI_EVENT_STATUS LocalEventStatus = 0; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| if (!EventStatus) |
| { |
| return (AE_BAD_PARAMETER); |
| } |
| |
| /* Get the info block for the entire GPE register */ |
| |
| GpeRegisterInfo = GpeEventInfo->RegisterInfo; |
| |
| /* Get the register bitmask for this GPE */ |
| |
| RegisterBit = (UINT8) (1 << |
| (GpeEventInfo->GpeNumber - GpeEventInfo->RegisterInfo->BaseGpeNumber)); |
| |
| /* GPE currently enabled? (enabled for runtime?) */ |
| |
| if (RegisterBit & GpeRegisterInfo->EnableForRun) |
| { |
| LocalEventStatus |= ACPI_EVENT_FLAG_ENABLED; |
| } |
| |
| /* GPE enabled for wake? */ |
| |
| if (RegisterBit & GpeRegisterInfo->EnableForWake) |
| { |
| LocalEventStatus |= ACPI_EVENT_FLAG_WAKE_ENABLED; |
| } |
| |
| /* GPE currently active (status bit == 1)? */ |
| |
| Status = AcpiHwRead (&InByte, &GpeRegisterInfo->StatusAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| if (RegisterBit & InByte) |
| { |
| LocalEventStatus |= ACPI_EVENT_FLAG_SET; |
| } |
| |
| /* Set return value */ |
| |
| (*EventStatus) = LocalEventStatus; |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwDisableGpeBlock |
| * |
| * PARAMETERS: GpeXruptInfo - GPE Interrupt info |
| * GpeBlock - Gpe Block info |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Disable all GPEs within a single GPE block |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiHwDisableGpeBlock ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Context) |
| { |
| UINT32 i; |
| ACPI_STATUS Status; |
| |
| |
| /* Examine each GPE Register within the block */ |
| |
| for (i = 0; i < GpeBlock->RegisterCount; i++) |
| { |
| /* Disable all GPEs in this register */ |
| |
| Status = AcpiHwWrite (0x00, &GpeBlock->RegisterInfo[i].EnableAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwClearGpeBlock |
| * |
| * PARAMETERS: GpeXruptInfo - GPE Interrupt info |
| * GpeBlock - Gpe Block info |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Clear status bits for all GPEs within a single GPE block |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiHwClearGpeBlock ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Context) |
| { |
| UINT32 i; |
| ACPI_STATUS Status; |
| |
| |
| /* Examine each GPE Register within the block */ |
| |
| for (i = 0; i < GpeBlock->RegisterCount; i++) |
| { |
| /* Clear status on all GPEs in this register */ |
| |
| Status = AcpiHwWrite (0xFF, &GpeBlock->RegisterInfo[i].StatusAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwEnableRuntimeGpeBlock |
| * |
| * PARAMETERS: GpeXruptInfo - GPE Interrupt info |
| * GpeBlock - Gpe Block info |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Enable all "runtime" GPEs within a single GPE block. Includes |
| * combination wake/run GPEs. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiHwEnableRuntimeGpeBlock ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Context) |
| { |
| UINT32 i; |
| ACPI_STATUS Status; |
| |
| |
| /* NOTE: assumes that all GPEs are currently disabled */ |
| |
| /* Examine each GPE Register within the block */ |
| |
| for (i = 0; i < GpeBlock->RegisterCount; i++) |
| { |
| if (!GpeBlock->RegisterInfo[i].EnableForRun) |
| { |
| continue; |
| } |
| |
| /* Enable all "runtime" GPEs in this register */ |
| |
| Status = AcpiHwWrite (GpeBlock->RegisterInfo[i].EnableForRun, |
| &GpeBlock->RegisterInfo[i].EnableAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwEnableWakeupGpeBlock |
| * |
| * PARAMETERS: GpeXruptInfo - GPE Interrupt info |
| * GpeBlock - Gpe Block info |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Enable all "wake" GPEs within a single GPE block. Includes |
| * combination wake/run GPEs. |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiHwEnableWakeupGpeBlock ( |
| ACPI_GPE_XRUPT_INFO *GpeXruptInfo, |
| ACPI_GPE_BLOCK_INFO *GpeBlock, |
| void *Context) |
| { |
| UINT32 i; |
| ACPI_STATUS Status; |
| |
| |
| /* Examine each GPE Register within the block */ |
| |
| for (i = 0; i < GpeBlock->RegisterCount; i++) |
| { |
| if (!GpeBlock->RegisterInfo[i].EnableForWake) |
| { |
| continue; |
| } |
| |
| /* Enable all "wake" GPEs in this register */ |
| |
| Status = AcpiHwWrite (GpeBlock->RegisterInfo[i].EnableForWake, |
| &GpeBlock->RegisterInfo[i].EnableAddress); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwDisableAllGpes |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Disable and clear all GPEs in all GPE blocks |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiHwDisableAllGpes ( |
| void) |
| { |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (HwDisableAllGpes); |
| |
| |
| Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, NULL); |
| Status = AcpiEvWalkGpeList (AcpiHwClearGpeBlock, NULL); |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwEnableAllRuntimeGpes |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiHwEnableAllRuntimeGpes ( |
| void) |
| { |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (HwEnableAllRuntimeGpes); |
| |
| |
| Status = AcpiEvWalkGpeList (AcpiHwEnableRuntimeGpeBlock, NULL); |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiHwEnableAllWakeupGpes |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Enable all "wakeup" GPEs, in all GPE blocks |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiHwEnableAllWakeupGpes ( |
| void) |
| { |
| ACPI_STATUS Status; |
| |
| |
| ACPI_FUNCTION_TRACE (HwEnableAllWakeupGpes); |
| |
| |
| Status = AcpiEvWalkGpeList (AcpiHwEnableWakeupGpeBlock, NULL); |
| return_ACPI_STATUS (Status); |
| } |
| |