765 lines
23 KiB
C
765 lines
23 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: evmisc - Miscellaneous event manager support functions
|
|
* $Revision: 59 $
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2002, 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 "acevents.h"
|
|
#include "acnamesp.h"
|
|
#include "acinterp.h"
|
|
|
|
#define _COMPONENT ACPI_EVENTS
|
|
ACPI_MODULE_NAME ("evmisc")
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvIsNotifyObject
|
|
*
|
|
* PARAMETERS: Node - Node to check
|
|
*
|
|
* RETURN: TRUE if notifies allowed on this object
|
|
*
|
|
* DESCRIPTION: Check type of node for a object that supports notifies.
|
|
*
|
|
* TBD: This could be replaced by a flag bit in the node.
|
|
*
|
|
******************************************************************************/
|
|
|
|
BOOLEAN
|
|
AcpiEvIsNotifyObject (
|
|
ACPI_NAMESPACE_NODE *Node)
|
|
{
|
|
switch (Node->Type)
|
|
{
|
|
case ACPI_TYPE_DEVICE:
|
|
case ACPI_TYPE_PROCESSOR:
|
|
case ACPI_TYPE_POWER:
|
|
case ACPI_TYPE_THERMAL:
|
|
/*
|
|
* These are the ONLY objects that can receive ACPI notifications
|
|
*/
|
|
return (TRUE);
|
|
|
|
default:
|
|
return (FALSE);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvGetGpeRegisterIndex
|
|
*
|
|
* PARAMETERS: GpeNumber - Raw GPE number
|
|
*
|
|
* RETURN: None.
|
|
*
|
|
* DESCRIPTION: Returns the register index (index into the GPE register info
|
|
* table) associated with this GPE.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AcpiEvGetGpeRegisterIndex (
|
|
UINT32 GpeNumber)
|
|
{
|
|
|
|
if (GpeNumber > AcpiGbl_GpeNumberMax)
|
|
{
|
|
return (ACPI_GPE_INVALID);
|
|
}
|
|
|
|
return (ACPI_DIV_8 (AcpiGbl_GpeNumberToIndex[GpeNumber].NumberIndex));
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvGetGpeNumberIndex
|
|
*
|
|
* PARAMETERS: GpeNumber - Raw GPE number
|
|
*
|
|
* RETURN: None.
|
|
*
|
|
* DESCRIPTION: Returns the number index (index into the GPE number info table)
|
|
* associated with this GPE.
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AcpiEvGetGpeNumberIndex (
|
|
UINT32 GpeNumber)
|
|
{
|
|
|
|
if (GpeNumber > AcpiGbl_GpeNumberMax)
|
|
{
|
|
return (ACPI_GPE_INVALID);
|
|
}
|
|
|
|
return (AcpiGbl_GpeNumberToIndex[GpeNumber].NumberIndex);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvQueueNotifyRequest
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* RETURN: None.
|
|
*
|
|
* DESCRIPTION: Dispatch a device notification event to a previously
|
|
* installed handler.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvQueueNotifyRequest (
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
UINT32 NotifyValue)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_OPERAND_OBJECT *HandlerObj = NULL;
|
|
ACPI_GENERIC_STATE *NotifyInfo;
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
ACPI_FUNCTION_NAME ("EvQueueNotifyRequest");
|
|
|
|
|
|
/*
|
|
* For value 1 (Ejection Request), some device method may need to be run.
|
|
* For value 2 (Device Wake) if _PRW exists, the _PS0 method may need to be run.
|
|
* For value 0x80 (Status Change) on the power button or sleep button,
|
|
* initiate soft-off or sleep operation?
|
|
*/
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"Dispatching Notify(%X) on node %p\n", NotifyValue, Node));
|
|
|
|
switch (NotifyValue)
|
|
{
|
|
case 0:
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Notify value: Re-enumerate Devices\n"));
|
|
break;
|
|
|
|
case 1:
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Notify value: Ejection Request\n"));
|
|
break;
|
|
|
|
case 2:
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Notify value: Device Wake\n"));
|
|
break;
|
|
|
|
case 0x80:
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Notify value: Status Change\n"));
|
|
break;
|
|
|
|
default:
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Unknown Notify Value: %X \n", NotifyValue));
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Get the notify object attached to the NS Node
|
|
*/
|
|
ObjDesc = AcpiNsGetAttachedObject (Node);
|
|
if (ObjDesc)
|
|
{
|
|
/* We have the notify object, Get the right handler */
|
|
|
|
switch (Node->Type)
|
|
{
|
|
case ACPI_TYPE_DEVICE:
|
|
case ACPI_TYPE_THERMAL:
|
|
case ACPI_TYPE_PROCESSOR:
|
|
case ACPI_TYPE_POWER:
|
|
|
|
if (NotifyValue <= ACPI_MAX_SYS_NOTIFY)
|
|
{
|
|
HandlerObj = ObjDesc->CommonNotify.SysHandler;
|
|
}
|
|
else
|
|
{
|
|
HandlerObj = ObjDesc->CommonNotify.DrvHandler;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
/* All other types are not supported */
|
|
return (AE_TYPE);
|
|
}
|
|
}
|
|
|
|
/* If there is any handler to run, schedule the dispatcher */
|
|
|
|
if ((AcpiGbl_SysNotify.Handler && (NotifyValue <= ACPI_MAX_SYS_NOTIFY)) ||
|
|
(AcpiGbl_DrvNotify.Handler && (NotifyValue > ACPI_MAX_SYS_NOTIFY)) ||
|
|
HandlerObj)
|
|
{
|
|
NotifyInfo = AcpiUtCreateGenericState ();
|
|
if (!NotifyInfo)
|
|
{
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
|
|
NotifyInfo->Common.DataType = ACPI_DESC_TYPE_STATE_NOTIFY;
|
|
NotifyInfo->Notify.Node = Node;
|
|
NotifyInfo->Notify.Value = (UINT16) NotifyValue;
|
|
NotifyInfo->Notify.HandlerObj = HandlerObj;
|
|
|
|
Status = AcpiOsQueueForExecution (OSD_PRIORITY_HIGH,
|
|
AcpiEvNotifyDispatch, NotifyInfo);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
AcpiUtDeleteGenericState (NotifyInfo);
|
|
}
|
|
}
|
|
|
|
if (!HandlerObj)
|
|
{
|
|
/* There is no per-device notify handler for this device */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"No notify handler for [%4.4s] node %p\n", Node->Name.Ascii, Node));
|
|
}
|
|
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvNotifyDispatch
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* RETURN: None.
|
|
*
|
|
* DESCRIPTION: Dispatch a device notification event to a previously
|
|
* installed handler.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void ACPI_SYSTEM_XFACE
|
|
AcpiEvNotifyDispatch (
|
|
void *Context)
|
|
{
|
|
ACPI_GENERIC_STATE *NotifyInfo = (ACPI_GENERIC_STATE *) Context;
|
|
ACPI_NOTIFY_HANDLER GlobalHandler = NULL;
|
|
void *GlobalContext = NULL;
|
|
ACPI_OPERAND_OBJECT *HandlerObj;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/*
|
|
* We will invoke a global notify handler if installed.
|
|
* This is done _before_ we invoke the per-device handler attached to the device.
|
|
*/
|
|
if (NotifyInfo->Notify.Value <= ACPI_MAX_SYS_NOTIFY)
|
|
{
|
|
/* Global system notification handler */
|
|
|
|
if (AcpiGbl_SysNotify.Handler)
|
|
{
|
|
GlobalHandler = AcpiGbl_SysNotify.Handler;
|
|
GlobalContext = AcpiGbl_SysNotify.Context;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Global driver notification handler */
|
|
|
|
if (AcpiGbl_DrvNotify.Handler)
|
|
{
|
|
GlobalHandler = AcpiGbl_DrvNotify.Handler;
|
|
GlobalContext = AcpiGbl_DrvNotify.Context;
|
|
}
|
|
}
|
|
|
|
/* Invoke the system handler first, if present */
|
|
|
|
if (GlobalHandler)
|
|
{
|
|
GlobalHandler (NotifyInfo->Notify.Node, NotifyInfo->Notify.Value, GlobalContext);
|
|
}
|
|
|
|
/* Now invoke the per-device handler, if present */
|
|
|
|
HandlerObj = NotifyInfo->Notify.HandlerObj;
|
|
if (HandlerObj)
|
|
{
|
|
HandlerObj->NotifyHandler.Handler (NotifyInfo->Notify.Node, NotifyInfo->Notify.Value,
|
|
HandlerObj->NotifyHandler.Context);
|
|
}
|
|
|
|
/* All done with the info object */
|
|
|
|
AcpiUtDeleteGenericState (NotifyInfo);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvGlobalLockThread
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Invoked by SCI interrupt handler upon acquisition of the
|
|
* Global Lock. Simply signal all threads that are waiting
|
|
* for the lock.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void ACPI_SYSTEM_XFACE
|
|
AcpiEvGlobalLockThread (
|
|
void *Context)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
/* Signal threads that are waiting for the lock */
|
|
|
|
if (AcpiGbl_GlobalLockThreadCount)
|
|
{
|
|
/* Send sufficient units to the semaphore */
|
|
|
|
Status = AcpiOsSignalSemaphore (AcpiGbl_GlobalLockSemaphore,
|
|
AcpiGbl_GlobalLockThreadCount);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_REPORT_ERROR (("Could not signal Global Lock semaphore\n"));
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvGlobalLockHandler
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Invoked directly from the SCI handler when a global lock
|
|
* release interrupt occurs. Grab the global lock and queue
|
|
* the global lock thread for execution
|
|
*
|
|
******************************************************************************/
|
|
|
|
static UINT32
|
|
AcpiEvGlobalLockHandler (
|
|
void *Context)
|
|
{
|
|
BOOLEAN Acquired = FALSE;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
/*
|
|
* Attempt to get the lock
|
|
* If we don't get it now, it will be marked pending and we will
|
|
* take another interrupt when it becomes free.
|
|
*/
|
|
ACPI_ACQUIRE_GLOBAL_LOCK (AcpiGbl_CommonFACS.GlobalLock, Acquired);
|
|
if (Acquired)
|
|
{
|
|
/* Got the lock, now wake all threads waiting for it */
|
|
|
|
AcpiGbl_GlobalLockAcquired = TRUE;
|
|
|
|
/* Run the Global Lock thread which will signal all waiting threads */
|
|
|
|
Status = AcpiOsQueueForExecution (OSD_PRIORITY_HIGH,
|
|
AcpiEvGlobalLockThread, Context);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_REPORT_ERROR (("Could not queue Global Lock thread, %s\n",
|
|
AcpiFormatException (Status)));
|
|
|
|
return (ACPI_INTERRUPT_NOT_HANDLED);
|
|
}
|
|
}
|
|
|
|
return (ACPI_INTERRUPT_HANDLED);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvInitGlobalLockHandler
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install a handler for the global lock release event
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvInitGlobalLockHandler (void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("EvInitGlobalLockHandler");
|
|
|
|
|
|
AcpiGbl_GlobalLockPresent = TRUE;
|
|
Status = AcpiInstallFixedEventHandler (ACPI_EVENT_GLOBAL,
|
|
AcpiEvGlobalLockHandler, NULL);
|
|
|
|
/*
|
|
* If the global lock does not exist on this platform, the attempt
|
|
* to enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick)
|
|
* Map to AE_OK, but mark global lock as not present.
|
|
* Any attempt to actually use the global lock will be flagged
|
|
* with an error.
|
|
*/
|
|
if (Status == AE_NO_HARDWARE_RESPONSE)
|
|
{
|
|
AcpiGbl_GlobalLockPresent = FALSE;
|
|
Status = AE_OK;
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvAcquireGlobalLock
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Attempt to gain ownership of the Global Lock.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvAcquireGlobalLock (
|
|
UINT16 Timeout)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
BOOLEAN Acquired = FALSE;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("EvAcquireGlobalLock");
|
|
|
|
|
|
#ifndef ACPI_APPLICATION
|
|
/* Make sure that we actually have a global lock */
|
|
|
|
if (!AcpiGbl_GlobalLockPresent)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_GLOBAL_LOCK);
|
|
}
|
|
#endif
|
|
|
|
/* One more thread wants the global lock */
|
|
|
|
AcpiGbl_GlobalLockThreadCount++;
|
|
|
|
/* If we (OS side vs. BIOS side) have the hardware lock already, we are done */
|
|
|
|
if (AcpiGbl_GlobalLockAcquired)
|
|
{
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/* We must acquire the actual hardware lock */
|
|
|
|
ACPI_ACQUIRE_GLOBAL_LOCK (AcpiGbl_CommonFACS.GlobalLock, Acquired);
|
|
if (Acquired)
|
|
{
|
|
/* We got the lock */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Acquired the HW Global Lock\n"));
|
|
|
|
AcpiGbl_GlobalLockAcquired = TRUE;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* Did not get the lock. The pending bit was set above, and we must now
|
|
* wait until we get the global lock released interrupt.
|
|
*/
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Waiting for the HW Global Lock\n"));
|
|
|
|
/*
|
|
* Acquire the global lock semaphore first.
|
|
* Since this wait will block, we must release the interpreter
|
|
*/
|
|
Status = AcpiExSystemWaitSemaphore (AcpiGbl_GlobalLockSemaphore,
|
|
Timeout);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvReleaseGlobalLock
|
|
*
|
|
* DESCRIPTION: Releases ownership of the Global Lock.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiEvReleaseGlobalLock (void)
|
|
{
|
|
BOOLEAN Pending = FALSE;
|
|
ACPI_STATUS Status = AE_OK;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("EvReleaseGlobalLock");
|
|
|
|
|
|
if (!AcpiGbl_GlobalLockThreadCount)
|
|
{
|
|
ACPI_REPORT_WARNING(("Cannot release HW Global Lock, it has not been acquired\n"));
|
|
return_ACPI_STATUS (AE_NOT_ACQUIRED);
|
|
}
|
|
|
|
/* One fewer thread has the global lock */
|
|
|
|
AcpiGbl_GlobalLockThreadCount--;
|
|
if (AcpiGbl_GlobalLockThreadCount)
|
|
{
|
|
/* There are still some threads holding the lock, cannot release */
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* No more threads holding lock, we can do the actual hardware
|
|
* release
|
|
*/
|
|
ACPI_RELEASE_GLOBAL_LOCK (AcpiGbl_CommonFACS.GlobalLock, Pending);
|
|
AcpiGbl_GlobalLockAcquired = FALSE;
|
|
|
|
/*
|
|
* If the pending bit was set, we must write GBL_RLS to the control
|
|
* register
|
|
*/
|
|
if (Pending)
|
|
{
|
|
Status = AcpiSetRegister (ACPI_BITREG_GLOBAL_LOCK_RELEASE, 1, ACPI_MTX_LOCK);
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiEvTerminate
|
|
*
|
|
* PARAMETERS: none
|
|
*
|
|
* RETURN: none
|
|
*
|
|
* DESCRIPTION: Disable events and free memory allocated for table storage.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiEvTerminate (void)
|
|
{
|
|
NATIVE_UINT_MAX32 i;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("EvTerminate");
|
|
|
|
|
|
if (AcpiGbl_EventsInitialized)
|
|
{
|
|
/*
|
|
* Disable all event-related functionality.
|
|
* In all cases, on error, print a message but obviously we don't abort.
|
|
*/
|
|
|
|
/*
|
|
* Disable all fixed events
|
|
*/
|
|
for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++)
|
|
{
|
|
Status = AcpiDisableEvent(i, ACPI_EVENT_FIXED, 0);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not disable fixed event %d\n", i));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Disable all GPEs
|
|
*/
|
|
for (i = 0; i < AcpiGbl_GpeNumberMax; i++)
|
|
{
|
|
if (AcpiEvGetGpeNumberIndex(i) != ACPI_GPE_INVALID)
|
|
{
|
|
Status = AcpiHwDisableGpe(i);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not disable GPE %d\n", i));
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Remove SCI handler
|
|
*/
|
|
Status = AcpiEvRemoveSciHandler();
|
|
if (ACPI_FAILURE(Status))
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Could not remove SCI handler\n"));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Return to original mode if necessary
|
|
*/
|
|
if (AcpiGbl_OriginalMode == ACPI_SYS_MODE_LEGACY)
|
|
{
|
|
Status = AcpiDisable ();
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "AcpiDisable failed\n"));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Free global tables, etc.
|
|
*/
|
|
if (AcpiGbl_GpeRegisterInfo)
|
|
{
|
|
ACPI_MEM_FREE (AcpiGbl_GpeRegisterInfo);
|
|
AcpiGbl_GpeRegisterInfo = NULL;
|
|
}
|
|
|
|
if (AcpiGbl_GpeNumberInfo)
|
|
{
|
|
ACPI_MEM_FREE (AcpiGbl_GpeNumberInfo);
|
|
AcpiGbl_GpeNumberInfo = NULL;
|
|
}
|
|
|
|
if (AcpiGbl_GpeNumberToIndex)
|
|
{
|
|
ACPI_MEM_FREE (AcpiGbl_GpeNumberToIndex);
|
|
AcpiGbl_GpeNumberToIndex = NULL;
|
|
}
|
|
|
|
return_VOID;
|
|
}
|
|
|