620 lines
20 KiB
C
620 lines
20 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: evgpeblk - GPE block creation and initialization.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2011, 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"
|
|
#include "acnamesp.h"
|
|
|
|
#define _COMPONENT ACPI_EVENTS
|
|
ACPI_MODULE_NAME ("evgpeblk")
|
|
|
|
/* Local prototypes */
|
|
|
|
static ACPI_STATUS
|
|
AcpiEvInstallGpeBlock (
|
|
ACPI_GPE_BLOCK_INFO *GpeBlock,
|
|
UINT32 InterruptNumber);
|
|
|
|
static ACPI_STATUS
|
|
AcpiEvCreateGpeInfoBlocks (
|
|
ACPI_GPE_BLOCK_INFO *GpeBlock);
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvInstallGpeBlock
|
|
*
|
|
* PARAMETERS: GpeBlock - New GPE block
|
|
* InterruptNumber - Xrupt to be associated with this
|
|
* GPE block
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install new GPE block with mutex support
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiEvInstallGpeBlock (
|
|
ACPI_GPE_BLOCK_INFO *GpeBlock,
|
|
UINT32 InterruptNumber)
|
|
{
|
|
ACPI_GPE_BLOCK_INFO *NextGpeBlock;
|
|
ACPI_GPE_XRUPT_INFO *GpeXruptBlock;
|
|
ACPI_STATUS Status;
|
|
ACPI_CPU_FLAGS Flags;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvInstallGpeBlock);
|
|
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
GpeXruptBlock = AcpiEvGetGpeXruptBlock (InterruptNumber);
|
|
if (!GpeXruptBlock)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/* Install the new block at the end of the list with lock */
|
|
|
|
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
|
if (GpeXruptBlock->GpeBlockListHead)
|
|
{
|
|
NextGpeBlock = GpeXruptBlock->GpeBlockListHead;
|
|
while (NextGpeBlock->Next)
|
|
{
|
|
NextGpeBlock = NextGpeBlock->Next;
|
|
}
|
|
|
|
NextGpeBlock->Next = GpeBlock;
|
|
GpeBlock->Previous = NextGpeBlock;
|
|
}
|
|
else
|
|
{
|
|
GpeXruptBlock->GpeBlockListHead = GpeBlock;
|
|
}
|
|
|
|
GpeBlock->XruptBlock = GpeXruptBlock;
|
|
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
|
|
|
|
|
UnlockAndExit:
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvDeleteGpeBlock
|
|
*
|
|
* PARAMETERS: GpeBlock - Existing GPE block
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Remove a GPE block
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvDeleteGpeBlock (
|
|
ACPI_GPE_BLOCK_INFO *GpeBlock)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_CPU_FLAGS Flags;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvInstallGpeBlock);
|
|
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Disable all GPEs in this block */
|
|
|
|
Status = AcpiHwDisableGpeBlock (GpeBlock->XruptBlock, GpeBlock, NULL);
|
|
|
|
if (!GpeBlock->Previous && !GpeBlock->Next)
|
|
{
|
|
/* This is the last GpeBlock on this interrupt */
|
|
|
|
Status = AcpiEvDeleteGpeXrupt (GpeBlock->XruptBlock);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto UnlockAndExit;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Remove the block on this interrupt with lock */
|
|
|
|
Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock);
|
|
if (GpeBlock->Previous)
|
|
{
|
|
GpeBlock->Previous->Next = GpeBlock->Next;
|
|
}
|
|
else
|
|
{
|
|
GpeBlock->XruptBlock->GpeBlockListHead = GpeBlock->Next;
|
|
}
|
|
|
|
if (GpeBlock->Next)
|
|
{
|
|
GpeBlock->Next->Previous = GpeBlock->Previous;
|
|
}
|
|
AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags);
|
|
}
|
|
|
|
AcpiCurrentGpeCount -= GpeBlock->GpeCount;
|
|
|
|
/* Free the GpeBlock */
|
|
|
|
ACPI_FREE (GpeBlock->RegisterInfo);
|
|
ACPI_FREE (GpeBlock->EventInfo);
|
|
ACPI_FREE (GpeBlock);
|
|
|
|
UnlockAndExit:
|
|
Status = AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvCreateGpeInfoBlocks
|
|
*
|
|
* PARAMETERS: GpeBlock - New GPE block
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Create the RegisterInfo and EventInfo blocks for this GPE block
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiEvCreateGpeInfoBlocks (
|
|
ACPI_GPE_BLOCK_INFO *GpeBlock)
|
|
{
|
|
ACPI_GPE_REGISTER_INFO *GpeRegisterInfo = NULL;
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo = NULL;
|
|
ACPI_GPE_EVENT_INFO *ThisEvent;
|
|
ACPI_GPE_REGISTER_INFO *ThisRegister;
|
|
UINT32 i;
|
|
UINT32 j;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvCreateGpeInfoBlocks);
|
|
|
|
|
|
/* Allocate the GPE register information block */
|
|
|
|
GpeRegisterInfo = ACPI_ALLOCATE_ZEROED (
|
|
(ACPI_SIZE) GpeBlock->RegisterCount *
|
|
sizeof (ACPI_GPE_REGISTER_INFO));
|
|
if (!GpeRegisterInfo)
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Could not allocate the GpeRegisterInfo table"));
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/*
|
|
* Allocate the GPE EventInfo block. There are eight distinct GPEs
|
|
* per register. Initialization to zeros is sufficient.
|
|
*/
|
|
GpeEventInfo = ACPI_ALLOCATE_ZEROED ((ACPI_SIZE) GpeBlock->GpeCount *
|
|
sizeof (ACPI_GPE_EVENT_INFO));
|
|
if (!GpeEventInfo)
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Could not allocate the GpeEventInfo table"));
|
|
Status = AE_NO_MEMORY;
|
|
goto ErrorExit;
|
|
}
|
|
|
|
/* Save the new Info arrays in the GPE block */
|
|
|
|
GpeBlock->RegisterInfo = GpeRegisterInfo;
|
|
GpeBlock->EventInfo = GpeEventInfo;
|
|
|
|
/*
|
|
* Initialize the GPE Register and Event structures. A goal of these
|
|
* tables is to hide the fact that there are two separate GPE register
|
|
* sets in a given GPE hardware block, the status registers occupy the
|
|
* first half, and the enable registers occupy the second half.
|
|
*/
|
|
ThisRegister = GpeRegisterInfo;
|
|
ThisEvent = GpeEventInfo;
|
|
|
|
for (i = 0; i < GpeBlock->RegisterCount; i++)
|
|
{
|
|
/* Init the RegisterInfo for this GPE register (8 GPEs) */
|
|
|
|
ThisRegister->BaseGpeNumber = (UINT8) (GpeBlock->BlockBaseNumber +
|
|
(i * ACPI_GPE_REGISTER_WIDTH));
|
|
|
|
ThisRegister->StatusAddress.Address =
|
|
GpeBlock->BlockAddress.Address + i;
|
|
|
|
ThisRegister->EnableAddress.Address =
|
|
GpeBlock->BlockAddress.Address + i + GpeBlock->RegisterCount;
|
|
|
|
ThisRegister->StatusAddress.SpaceId = GpeBlock->BlockAddress.SpaceId;
|
|
ThisRegister->EnableAddress.SpaceId = GpeBlock->BlockAddress.SpaceId;
|
|
ThisRegister->StatusAddress.BitWidth = ACPI_GPE_REGISTER_WIDTH;
|
|
ThisRegister->EnableAddress.BitWidth = ACPI_GPE_REGISTER_WIDTH;
|
|
ThisRegister->StatusAddress.BitOffset = 0;
|
|
ThisRegister->EnableAddress.BitOffset = 0;
|
|
|
|
/* Init the EventInfo for each GPE within this register */
|
|
|
|
for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
|
|
{
|
|
ThisEvent->GpeNumber = (UINT8) (ThisRegister->BaseGpeNumber + j);
|
|
ThisEvent->RegisterInfo = ThisRegister;
|
|
ThisEvent++;
|
|
}
|
|
|
|
/* Disable all GPEs within this register */
|
|
|
|
Status = AcpiHwWrite (0x00, &ThisRegister->EnableAddress);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto ErrorExit;
|
|
}
|
|
|
|
/* Clear any pending GPE events within this register */
|
|
|
|
Status = AcpiHwWrite (0xFF, &ThisRegister->StatusAddress);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto ErrorExit;
|
|
}
|
|
|
|
ThisRegister++;
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
|
|
|
|
ErrorExit:
|
|
if (GpeRegisterInfo)
|
|
{
|
|
ACPI_FREE (GpeRegisterInfo);
|
|
}
|
|
if (GpeEventInfo)
|
|
{
|
|
ACPI_FREE (GpeEventInfo);
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvCreateGpeBlock
|
|
*
|
|
* PARAMETERS: GpeDevice - Handle to the parent GPE block
|
|
* GpeBlockAddress - Address and SpaceID
|
|
* RegisterCount - Number of GPE register pairs in the block
|
|
* GpeBlockBaseNumber - Starting GPE number for the block
|
|
* InterruptNumber - H/W interrupt for the block
|
|
* ReturnGpeBlock - Where the new block descriptor is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Create and Install a block of GPE registers. All GPEs within
|
|
* the block are disabled at exit.
|
|
* Note: Assumes namespace is locked.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvCreateGpeBlock (
|
|
ACPI_NAMESPACE_NODE *GpeDevice,
|
|
ACPI_GENERIC_ADDRESS *GpeBlockAddress,
|
|
UINT32 RegisterCount,
|
|
UINT8 GpeBlockBaseNumber,
|
|
UINT32 InterruptNumber,
|
|
ACPI_GPE_BLOCK_INFO **ReturnGpeBlock)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_GPE_BLOCK_INFO *GpeBlock;
|
|
ACPI_GPE_WALK_INFO WalkInfo;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvCreateGpeBlock);
|
|
|
|
|
|
if (!RegisterCount)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* Allocate a new GPE block */
|
|
|
|
GpeBlock = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_BLOCK_INFO));
|
|
if (!GpeBlock)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Initialize the new GPE block */
|
|
|
|
GpeBlock->Node = GpeDevice;
|
|
GpeBlock->GpeCount = (UINT16) (RegisterCount * ACPI_GPE_REGISTER_WIDTH);
|
|
GpeBlock->Initialized = FALSE;
|
|
GpeBlock->RegisterCount = RegisterCount;
|
|
GpeBlock->BlockBaseNumber = GpeBlockBaseNumber;
|
|
|
|
ACPI_MEMCPY (&GpeBlock->BlockAddress, GpeBlockAddress,
|
|
sizeof (ACPI_GENERIC_ADDRESS));
|
|
|
|
/*
|
|
* Create the RegisterInfo and EventInfo sub-structures
|
|
* Note: disables and clears all GPEs in the block
|
|
*/
|
|
Status = AcpiEvCreateGpeInfoBlocks (GpeBlock);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_FREE (GpeBlock);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Install the new block in the global lists */
|
|
|
|
Status = AcpiEvInstallGpeBlock (GpeBlock, InterruptNumber);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_FREE (GpeBlock);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
AcpiGbl_AllGpesInitialized = FALSE;
|
|
|
|
/* Find all GPE methods (_Lxx or_Exx) for this block */
|
|
|
|
WalkInfo.GpeBlock = GpeBlock;
|
|
WalkInfo.GpeDevice = GpeDevice;
|
|
WalkInfo.ExecuteByOwnerId = FALSE;
|
|
|
|
Status = AcpiNsWalkNamespace (ACPI_TYPE_METHOD, GpeDevice,
|
|
ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK,
|
|
AcpiEvMatchGpeMethod, NULL, &WalkInfo, NULL);
|
|
|
|
/* Return the new block */
|
|
|
|
if (ReturnGpeBlock)
|
|
{
|
|
(*ReturnGpeBlock) = GpeBlock;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
|
|
"GPE %02X to %02X [%4.4s] %u regs on int 0x%X\n",
|
|
(UINT32) GpeBlock->BlockBaseNumber,
|
|
(UINT32) (GpeBlock->BlockBaseNumber + (GpeBlock->GpeCount - 1)),
|
|
GpeDevice->Name.Ascii, GpeBlock->RegisterCount,
|
|
InterruptNumber));
|
|
|
|
/* Update global count of currently available GPEs */
|
|
|
|
AcpiCurrentGpeCount += GpeBlock->GpeCount;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvInitializeGpeBlock
|
|
*
|
|
* PARAMETERS: ACPI_GPE_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Initialize and enable a GPE block. Enable GPEs that have
|
|
* associated methods.
|
|
* Note: Assumes namespace is locked.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvInitializeGpeBlock (
|
|
ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
|
|
ACPI_GPE_BLOCK_INFO *GpeBlock,
|
|
void *Ignored)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_GPE_EVENT_INFO *GpeEventInfo;
|
|
UINT32 GpeEnabledCount;
|
|
UINT32 GpeIndex;
|
|
UINT32 i;
|
|
UINT32 j;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (EvInitializeGpeBlock);
|
|
|
|
|
|
/*
|
|
* Ignore a null GPE block (e.g., if no GPE block 1 exists), and
|
|
* any GPE blocks that have been initialized already.
|
|
*/
|
|
if (!GpeBlock || GpeBlock->Initialized)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Enable all GPEs that have a corresponding method and have the
|
|
* ACPI_GPE_CAN_WAKE flag unset. Any other GPEs within this block
|
|
* must be enabled via the acpi_enable_gpe() interface.
|
|
*/
|
|
GpeEnabledCount = 0;
|
|
|
|
for (i = 0; i < GpeBlock->RegisterCount; i++)
|
|
{
|
|
for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
|
|
{
|
|
/* Get the info block for this particular GPE */
|
|
|
|
GpeIndex = (i * ACPI_GPE_REGISTER_WIDTH) + j;
|
|
GpeEventInfo = &GpeBlock->EventInfo[GpeIndex];
|
|
|
|
/*
|
|
* Ignore GPEs that have no corresponding _Lxx/_Exx method
|
|
* and GPEs that are used to wake the system
|
|
*/
|
|
if (((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) == ACPI_GPE_DISPATCH_NONE) ||
|
|
((GpeEventInfo->Flags & ACPI_GPE_DISPATCH_MASK) == ACPI_GPE_DISPATCH_HANDLER) ||
|
|
(GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
Status = AcpiEvAddGpeReference (GpeEventInfo);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"Could not enable GPE 0x%02X",
|
|
GpeIndex + GpeBlock->BlockBaseNumber));
|
|
continue;
|
|
}
|
|
|
|
GpeEnabledCount++;
|
|
}
|
|
}
|
|
|
|
if (GpeEnabledCount)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INIT,
|
|
"Enabled %u GPEs in this block\n", GpeEnabledCount));
|
|
}
|
|
|
|
GpeBlock->Initialized = TRUE;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|