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Diffstat (limited to 'sys/contrib/dev/acpica/hwgpe.c')
| -rw-r--r-- | sys/contrib/dev/acpica/hwgpe.c | 545 |
1 files changed, 545 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/hwgpe.c b/sys/contrib/dev/acpica/hwgpe.c new file mode 100644 index 0000000..d7498e5 --- /dev/null +++ b/sys/contrib/dev/acpica/hwgpe.c @@ -0,0 +1,545 @@ + +/****************************************************************************** + * + * Module Name: hwgpe - Low level GPE enable/disable/clear functions + * $Revision: 1.75 $ + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2007, 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 <contrib/dev/acpica/acpi.h> +#include <contrib/dev/acpica/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); + + +/****************************************************************************** + * + * 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 = AcpiHwLowLevelWrite (8, 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 = AcpiHwLowLevelWrite (8, 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 = AcpiHwLowLevelRead (8, &InByte, &GpeRegisterInfo->StatusAddress); + if (ACPI_FAILURE (Status)) + { + goto UnlockAndExit; + } + + if (RegisterBit & InByte) + { + LocalEventStatus |= ACPI_EVENT_FLAG_SET; + } + + /* Set return value */ + + (*EventStatus) = LocalEventStatus; + + +UnlockAndExit: + return (Status); +} + + +/****************************************************************************** + * + * 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) +{ + 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 = AcpiHwLowLevelWrite (8, 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) +{ + 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 = AcpiHwLowLevelWrite (8, 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) +{ + 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 = AcpiHwLowLevelWrite (8, 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) +{ + 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 = AcpiHwLowLevelWrite (8, + 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); + Status = AcpiEvWalkGpeList (AcpiHwClearGpeBlock); + 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); + 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); + return_ACPI_STATUS (Status); +} + |
