evmisc.c revision 450d696485d078017a0c7d3eef7384ee79c9f467
/******************************************************************************
*
* Module Name: evmisc - Miscellaneous event manager support functions
* $Revision: 84 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2005, 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
* 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
* 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
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* 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")
#ifdef ACPI_DEBUG_OUTPUT
static const char *AcpiNotifyValueNames[] =
{
"Bus Check",
"Device Check",
"Device Wake",
"Eject request",
"Device Check Light",
"Frequency Mismatch",
"Bus Mode Mismatch",
"Power Fault"
};
#endif
/* Local prototypes */
static void ACPI_SYSTEM_XFACE
void *Context);
static void ACPI_SYSTEM_XFACE
void *Context);
static UINT32
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.
*
******************************************************************************/
{
{
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: 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_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?
*/
if (NotifyValue <= 7)
{
}
else
{
"Notify value: 0x%2.2X **Device Specific**\n",
NotifyValue));
}
/* Get the notify object attached to the NS Node */
if (ObjDesc)
{
/* We have the notify object, Get the right handler */
{
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
if (NotifyValue <= ACPI_MAX_SYS_NOTIFY)
{
}
else
{
}
break;
default:
/* All other types are not supported */
return (AE_TYPE);
}
}
/* If there is any handler to run, schedule the dispatcher */
{
if (!NotifyInfo)
{
return (AE_NO_MEMORY);
}
if (ACPI_FAILURE (Status))
{
}
}
if (!HandlerObj)
{
/*
* There is no per-device notify handler for this device.
* This may or may not be a problem.
*/
"No notify handler for Notify(%4.4s, %X) node %p\n",
}
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
void *Context)
{
void *GlobalContext = NULL;
/*
* We will invoke a global notify handler if installed.
* This is done _before_ we invoke the per-device handler attached
* to the device.
*/
{
/* Global system notification handler */
{
}
}
else
{
/* Global driver notification handler */
{
}
}
/* Invoke the system handler first, if present */
if (GlobalHandler)
{
}
/* Now invoke the per-device handler, if present */
if (HandlerObj)
{
}
/* All done with the info object */
}
/*******************************************************************************
*
* FUNCTION: AcpiEvGlobalLockThread
*
* PARAMETERS: Context - From thread interface, not used
*
* 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
void *Context)
{
/* Signal threads that are waiting for the lock */
{
/* Send sufficient units to the semaphore */
if (ACPI_FAILURE (Status))
{
ACPI_REPORT_ERROR (("Could not signal Global Lock semaphore\n"));
}
}
}
/*******************************************************************************
*
* FUNCTION: AcpiEvGlobalLockHandler
*
* PARAMETERS: Context - From thread interface, not used
*
* RETURN: ACPI_INTERRUPT_HANDLED or ACPI_INTERRUPT_NOT_HANDLED
*
* 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
void *Context)
{
/*
* 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.
*/
if (Acquired)
{
/* Got the lock, now wake all threads waiting for it */
/* Run the Global Lock thread which will signal all waiting threads */
if (ACPI_FAILURE (Status))
{
ACPI_REPORT_ERROR (("Could not queue Global Lock thread, %s\n",
return (ACPI_INTERRUPT_NOT_HANDLED);
}
}
return (ACPI_INTERRUPT_HANDLED);
}
/*******************************************************************************
*
* FUNCTION: AcpiEvInitGlobalLockHandler
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Install a handler for the global lock release event
*
******************************************************************************/
void)
{
ACPI_FUNCTION_TRACE ("EvInitGlobalLockHandler");
/*
* 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)
{
}
}
/******************************************************************************
*
* FUNCTION: AcpiEvAcquireGlobalLock
*
* PARAMETERS: Timeout - Max time to wait for the lock, in millisec.
*
* RETURN: Status
*
* DESCRIPTION: Attempt to gain ownership of the Global Lock.
*
*****************************************************************************/
{
ACPI_FUNCTION_TRACE ("EvAcquireGlobalLock");
#ifndef ACPI_APPLICATION
/* Make sure that we actually have a global lock */
{
}
#endif
/* One more thread wants the global lock */
/*
* If we (OS side vs. BIOS side) have the hardware lock already,
* we are done
*/
{
}
/* We must acquire the actual hardware lock */
if (Acquired)
{
/* We got the lock */
}
/*
* Did not get the lock. The pending bit was set above, and we must now
* wait until we get the global lock released interrupt.
*/
/*
* Acquire the global lock semaphore first.
* Since this wait will block, we must release the interpreter
*/
Timeout);
}
/*******************************************************************************
*
* FUNCTION: AcpiEvReleaseGlobalLock
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Releases ownership of the Global Lock.
*
******************************************************************************/
void)
{
ACPI_FUNCTION_TRACE ("EvReleaseGlobalLock");
{
"Cannot release HW Global Lock, it has not been acquired\n"));
}
/* One fewer thread has the global lock */
{
/* There are still some threads holding the lock, cannot release */
}
/*
* No more threads holding lock, we can do the actual hardware
* release
*/
/*
* If the pending bit was set, we must write GBL_RLS to the control
* register
*/
if (Pending)
{
1, ACPI_MTX_LOCK);
}
}
/******************************************************************************
*
* FUNCTION: AcpiEvTerminate
*
* PARAMETERS: none
*
* RETURN: none
*
* DESCRIPTION: Disable events and free memory allocated for table storage.
*
******************************************************************************/
void
void)
{
ACPI_FUNCTION_TRACE ("EvTerminate");
{
/*
* 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++)
{
if (ACPI_FAILURE (Status))
{
"Could not disable fixed event %d\n", (UINT32) i));
}
}
/* Disable all GPEs in all GPE blocks */
/* Remove SCI handler */
Status = AcpiEvRemoveSciHandler ();
if (ACPI_FAILURE(Status))
{
"Could not remove SCI handler\n"));
}
}
/* Deallocate all handler objects installed within GPE info structs */
/* Return to original mode if necessary */
{
Status = AcpiDisable ();
if (ACPI_FAILURE (Status))
{
}
}
}