| Current Path : /sys/contrib/dev/acpica/events/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/contrib/dev/acpica/events/evmisc.c |
/******************************************************************************
*
* Module Name: evmisc - Miscellaneous event manager support functions
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2011, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/acevents.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#define _COMPONENT ACPI_EVENTS
ACPI_MODULE_NAME ("evmisc")
/* Local prototypes */
static void ACPI_SYSTEM_XFACE
AcpiEvNotifyDispatch (
void *Context);
/*******************************************************************************
*
* 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_THERMAL:
/*
* These are the ONLY objects that can receive ACPI notifications
*/
return (TRUE);
default:
return (FALSE);
}
}
/*******************************************************************************
*
* FUNCTION: AcpiEvQueueNotifyRequest
*
* PARAMETERS: Node - NS node for the notified object
* NotifyValue - Value from the Notify() request
*
* RETURN: Status
*
* 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 3 (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 on [%4.4s] Node %p Value 0x%2.2X (%s)\n",
AcpiUtGetNodeName (Node), Node, NotifyValue,
AcpiUtGetNotifyName (NotifyValue)));
/* 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)
{
/* Notify allowed only on these types */
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_PROCESSOR:
if (NotifyValue <= ACPI_MAX_SYS_NOTIFY)
{
HandlerObj = ObjDesc->CommonNotify.SystemNotify;
}
else
{
HandlerObj = ObjDesc->CommonNotify.DeviceNotify;
}
break;
default:
/* All other types are not supported */
return (AE_TYPE);
}
}
/*
* If there is any handler to run, schedule the dispatcher.
* Check for:
* 1) Global system notify handler
* 2) Global device notify handler
* 3) Per-device notify handler
*/
if ((AcpiGbl_SystemNotify.Handler &&
(NotifyValue <= ACPI_MAX_SYS_NOTIFY)) ||
(AcpiGbl_DeviceNotify.Handler &&
(NotifyValue > ACPI_MAX_SYS_NOTIFY)) ||
HandlerObj)
{
NotifyInfo = AcpiUtCreateGenericState ();
if (!NotifyInfo)
{
return (AE_NO_MEMORY);
}
if (!HandlerObj)
{
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"Executing system notify handler for Notify (%4.4s, %X) "
"node %p\n",
AcpiUtGetNodeName (Node), NotifyValue, Node));
}
NotifyInfo->Common.DescriptorType = ACPI_DESC_TYPE_STATE_NOTIFY;
NotifyInfo->Notify.Node = Node;
NotifyInfo->Notify.Value = (UINT16) NotifyValue;
NotifyInfo->Notify.HandlerObj = HandlerObj;
Status = AcpiOsExecute (
OSL_NOTIFY_HANDLER, AcpiEvNotifyDispatch, NotifyInfo);
if (ACPI_FAILURE (Status))
{
AcpiUtDeleteGenericState (NotifyInfo);
}
}
else
{
/* There is no notify handler (per-device or system) for this device */
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"No notify handler for Notify (%4.4s, %X) node %p\n",
AcpiUtGetNodeName (Node), NotifyValue, Node));
}
return (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiEvNotifyDispatch
*
* PARAMETERS: Context - To be passed to the notify handler
*
* RETURN: None.
*
* DESCRIPTION: Dispatch a device notification event to a previously
* installed handler.
*
******************************************************************************/
static 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_SystemNotify.Handler)
{
GlobalHandler = AcpiGbl_SystemNotify.Handler;
GlobalContext = AcpiGbl_SystemNotify.Context;
}
}
else
{
/* Global driver notification handler */
if (AcpiGbl_DeviceNotify.Handler)
{
GlobalHandler = AcpiGbl_DeviceNotify.Handler;
GlobalContext = AcpiGbl_DeviceNotify.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->Notify.Handler (NotifyInfo->Notify.Node,
NotifyInfo->Notify.Value,
HandlerObj->Notify.Context);
}
/* All done with the info object */
AcpiUtDeleteGenericState (NotifyInfo);
}
/******************************************************************************
*
* FUNCTION: AcpiEvTerminate
*
* PARAMETERS: none
*
* RETURN: none
*
* DESCRIPTION: Disable events and free memory allocated for table storage.
*
******************************************************************************/
void
AcpiEvTerminate (
void)
{
UINT32 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, 0);
if (ACPI_FAILURE (Status))
{
ACPI_ERROR ((AE_INFO,
"Could not disable fixed event %u", (UINT32) i));
}
}
/* Disable all GPEs in all GPE blocks */
Status = AcpiEvWalkGpeList (AcpiHwDisableGpeBlock, NULL);
/* Remove SCI handler */
Status = AcpiEvRemoveSciHandler ();
if (ACPI_FAILURE(Status))
{
ACPI_ERROR ((AE_INFO,
"Could not remove SCI handler"));
}
Status = AcpiEvRemoveGlobalLockHandler ();
if (ACPI_FAILURE(Status))
{
ACPI_ERROR ((AE_INFO,
"Could not remove Global Lock handler"));
}
}
/* Deallocate all handler objects installed within GPE info structs */
Status = AcpiEvWalkGpeList (AcpiEvDeleteGpeHandlers, NULL);
/* Return to original mode if necessary */
if (AcpiGbl_OriginalMode == ACPI_SYS_MODE_LEGACY)
{
Status = AcpiDisable ();
if (ACPI_FAILURE (Status))
{
ACPI_WARNING ((AE_INFO, "AcpiDisable failed"));
}
}
return_VOID;
}