utxface.c revision 26f3cdf03f1adcc98f6d3d99843ee71e9229a8c0
/******************************************************************************
*
* Module Name: utxface - External interfaces for "global" ACPI 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.
*/
#define __UTXFACE_C__
#include "acpi.h"
#include "accommon.h"
#include "acevents.h"
#include "acnamesp.h"
#include "acdebug.h"
#include "actables.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME ("utxface")
#ifndef ACPI_ASL_COMPILER
/*******************************************************************************
*
* FUNCTION: AcpiInitializeSubsystem
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Initializes all global variables. This is the first function
* called, so any early initialization belongs here.
*
******************************************************************************/
void)
{
/* Initialize the OS-Dependent layer */
Status = AcpiOsInitialize ();
if (ACPI_FAILURE (Status))
{
}
/* Initialize all globals used by the subsystem */
Status = AcpiUtInitGlobals ();
if (ACPI_FAILURE (Status))
{
}
/* Create the default mutex objects */
Status = AcpiUtMutexInitialize ();
if (ACPI_FAILURE (Status))
{
}
/*
* Initialize the namespace manager and
* the root of the namespace tree
*/
Status = AcpiNsRootInitialize ();
if (ACPI_FAILURE (Status))
{
}
/* Initialize the global OSI interfaces list with the static names */
if (ACPI_FAILURE (Status))
{
}
/* If configured, initialize the AML debugger */
}
/*******************************************************************************
*
* FUNCTION: AcpiEnableSubsystem
*
*
* RETURN: Status
*
* DESCRIPTION: Completes the subsystem initialization including hardware.
* Puts system into ACPI mode if it isn't already.
*
******************************************************************************/
{
/* Enable ACPI mode */
if (!(Flags & ACPI_NO_ACPI_ENABLE))
{
Status = AcpiEnable ();
if (ACPI_FAILURE (Status))
{
}
}
/*
* Obtain a permanent mapping for the FACS. This is required for the
* Global Lock and the Firmware Waking Vector
*/
Status = AcpiTbInitializeFacs ();
if (ACPI_FAILURE (Status))
{
}
/*
* Install the default OpRegion handlers. These are installed unless
* other handlers have already been installed via the
* InstallAddressSpaceHandler interface.
*/
if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
{
"[Init] Installing default address space handlers\n"));
if (ACPI_FAILURE (Status))
{
}
}
/*
* Initialize ACPI Event handling (Fixed and General Purpose)
*
* Note1: We must have the hardware and events initialized before we can
* execute any control methods safely. Any control method can require
* ACPI hardware support, so the hardware must be fully initialized before
* any method execution!
*
* Note2: Fixed events are initialized and enabled here. GPEs are
* initialized, but cannot be enabled until after the hardware is
* completely initialized (SCI and GlobalLock activated) and the various
* initialization control methods are run (_REG, _STA, _INI) on the
* entire namespace.
*/
if (!(Flags & ACPI_NO_EVENT_INIT))
{
"[Init] Initializing ACPI events\n"));
Status = AcpiEvInitializeEvents ();
if (ACPI_FAILURE (Status))
{
}
}
/*
* Install the SCI handler and Global Lock handler. This completes the
* hardware initialization.
*/
if (!(Flags & ACPI_NO_HANDLER_INIT))
{
if (ACPI_FAILURE (Status))
{
}
}
}
/*******************************************************************************
*
* FUNCTION: AcpiInitializeObjects
*
*
* RETURN: Status
*
* DESCRIPTION: Completes namespace initialization by initializing device
* objects and executing AML code for Regions, buffers, etc.
*
******************************************************************************/
{
/*
* Run all _REG methods
*
* Note: Any objects accessed by the _REG methods will be automatically
* initialized, even if they contain executable AML (see the call to
* AcpiNsInitializeObjects below).
*/
if (!(Flags & ACPI_NO_ADDRESS_SPACE_INIT))
{
"[Init] Executing _REG OpRegion methods\n"));
if (ACPI_FAILURE (Status))
{
}
}
/*
* Execute any module-level code that was detected during the table load
* phase. Although illegal since ACPI 2.0, there are many machines that
* contain this type of code. Each block of detected executable AML code
* outside of any control method is wrapped with a temporary control
* method object and placed on a global list. The methods on this list
* are executed below.
*/
/*
* Initialize the objects that remain uninitialized. This runs the
* executable AML that may be part of the declaration of these objects:
* OperationRegions, BufferFields, Buffers, and Packages.
*/
if (!(Flags & ACPI_NO_OBJECT_INIT))
{
"[Init] Completing Initialization of ACPI Objects\n"));
if (ACPI_FAILURE (Status))
{
}
}
/*
* Initialize all device objects in the namespace. This runs the device
* _STA and _INI methods.
*/
if (!(Flags & ACPI_NO_DEVICE_INIT))
{
"[Init] Initializing ACPI Devices\n"));
if (ACPI_FAILURE (Status))
{
}
}
/*
* Empty the caches (delete the cached objects) on the assumption that
* the table load filled them up more than they will be at runtime --
* thus wasting non-paged memory.
*/
Status = AcpiPurgeCachedObjects ();
}
#endif
/*******************************************************************************
*
* FUNCTION: AcpiTerminate
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Shutdown the ACPICA subsystem and release all resources.
*
******************************************************************************/
void)
{
/* Just exit if subsystem is already shutdown */
if (AcpiGbl_Shutdown)
{
}
/* Subsystem appears active, go ahead and shut it down */
AcpiGbl_StartupFlags = 0;
/* Terminate the AML Debugger if present */
/* Shutdown and free all resources */
/* Free the mutex objects */
#ifdef ACPI_DEBUGGER
/* Shut down the debugger */
AcpiDbTerminate ();
#endif
/* Now we can shutdown the OS-dependent layer */
Status = AcpiOsTerminate ();
}
#ifndef ACPI_ASL_COMPILER
/*******************************************************************************
*
* FUNCTION: AcpiSubsystemStatus
*
* PARAMETERS: None
*
* RETURN: Status of the ACPI subsystem
*
* DESCRIPTION: Other drivers that use the ACPI subsystem should call this
* before making any other calls, to ensure the subsystem
* initialized successfully.
*
******************************************************************************/
void)
{
{
return (AE_OK);
}
else
{
return (AE_ERROR);
}
}
/*******************************************************************************
*
* FUNCTION: AcpiGetSystemInfo
*
* PARAMETERS: OutBuffer - A buffer to receive the resources for the
* device
*
* RETURN: Status - the status of the call
*
* DESCRIPTION: This function is called to get information about the current
* state of the ACPI subsystem. It will return system information
* in the OutBuffer.
*
* If the function fails an appropriate status will be returned
* and the value of OutBuffer is undefined.
*
******************************************************************************/
{
/* Parameter validation */
if (ACPI_FAILURE (Status))
{
}
if (ACPI_FAILURE (Status))
{
}
/*
* Populate the return buffer
*/
/* System flags (ACPI capabilities) */
/* Timer resolution - 24 or 32 bits */
{
}
else
{
}
/* Clear the reserved fields */
/* Current debug levels */
}
/*******************************************************************************
*
* FUNCTION: AcpiGetStatistics
*
* PARAMETERS: Stats - Where the statistics are returned
*
* RETURN: Status - the status of the call
*
* DESCRIPTION: Get the contents of the various system counters
*
******************************************************************************/
{
/* Parameter validation */
if (!Stats)
{
}
/* Various interrupt-based event counters */
sizeof (AcpiFixedEventCount));
/* Other counters */
}
/*****************************************************************************
*
* FUNCTION: AcpiInstallInitializationHandler
*
* PARAMETERS: Handler - Callback procedure
* Function - Not (currently) used, see below
*
* RETURN: Status
*
* DESCRIPTION: Install an initialization handler
*
* TBD: When a second function is added, must save the Function also.
*
****************************************************************************/
{
if (!Handler)
{
return (AE_BAD_PARAMETER);
}
if (AcpiGbl_InitHandler)
{
return (AE_ALREADY_EXISTS);
}
return AE_OK;
}
/*****************************************************************************
*
* FUNCTION: AcpiPurgeCachedObjects
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Empty all caches (delete the cached objects)
*
****************************************************************************/
void)
{
(void) AcpiOsPurgeCache (AcpiGbl_StateCache);
(void) AcpiOsPurgeCache (AcpiGbl_OperandCache);
(void) AcpiOsPurgeCache (AcpiGbl_PsNodeCache);
(void) AcpiOsPurgeCache (AcpiGbl_PsNodeExtCache);
}
/*****************************************************************************
*
* FUNCTION: AcpiInstallInterface
*
* PARAMETERS: InterfaceName - The interface to install
*
* RETURN: Status
*
* DESCRIPTION: Install an _OSI interface to the global list
*
****************************************************************************/
{
/* Parameter validation */
{
return (AE_BAD_PARAMETER);
}
/* Check if the interface name is already in the global list */
if (InterfaceInfo)
{
/*
* The interface already exists in the list. This is OK if the
* interface has been marked invalid -- just clear the bit.
*/
{
}
else
{
}
}
else
{
/* New interface name, install into the global list */
}
return (Status);
}
/*****************************************************************************
*
* FUNCTION: AcpiRemoveInterface
*
* PARAMETERS: InterfaceName - The interface to remove
*
* RETURN: Status
*
* DESCRIPTION: Remove an _OSI interface from the global list
*
****************************************************************************/
{
/* Parameter validation */
{
return (AE_BAD_PARAMETER);
}
return (Status);
}
/*****************************************************************************
*
* FUNCTION: AcpiInstallInterfaceHandler
*
* PARAMETERS: Handler - The _OSI interface handler to install
* NULL means "remove existing handler"
*
* RETURN: Status
*
* DESCRIPTION: Install a handler for the predefined _OSI ACPI method.
* invoked during execution of the internal implementation of
* _OSI. A NULL handler simply removes any existing handler.
*
****************************************************************************/
{
if (Handler && AcpiGbl_InterfaceHandler)
{
}
else
{
}
return (Status);
}
#endif /* !ACPI_ASL_COMPILER */