/******************************************************************************
*
* Module Name: examples - Example ACPICA code
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2010, 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.
*
*****************************************************************************/
/* Set the ACPICA application type for use in include/platform/acenv.h */
#ifndef WIN32
#define WIN32
#endif
#define ACPI_DEBUG_OUTPUT
/* ACPICA public headers */
#include "acpi.h"
#define _COMPONENT ACPI_EXAMPLE
ACPI_MODULE_NAME ("examples")
/******************************************************************************
*
* ACPICA Example Code
*
* This module contains examples of how the host OS should interface to the
* ACPICA subsystem.
*
* 1) How to use the platform/acenv.h file and how to set configuration
* options.
*
* 2) main - using the debug output mechanism and the error/warning output
* macros.
*
* 3) Two examples of the ACPICA initialization sequence. The first is a
* initialization with no "early" ACPI table access. The second shows
* how to use ACPICA to obtain the tables very early during kernel
* initialization, even before dynamic memory is available.
*
* 4) How to invoke a control method, including argument setup and how to
* access the return value.
*
*****************************************************************************/
/* Standard Clib headers */
#include <stdio.h>
#include <string.h>
/* Local Prototypes */
ACPI_STATUS
InitializeFullAcpi (void);
ACPI_STATUS
InstallHandlers (void);
void
ExecuteOSI (void);
/******************************************************************************
*
* FUNCTION: main
*
* PARAMETERS: argc, argv
*
* RETURN: Status
*
* DESCRIPTION: Main routine. Shows the use of the various output macros, as
* well as the use of the debug layer/level globals.
*
*****************************************************************************/
int ACPI_SYSTEM_XFACE
main (
int argc,
char **argv)
{
ACPI_FUNCTION_NAME (Examples-main);
InitializeFullAcpi ();
/* Enable debug output, example debug print */
AcpiDbgLayer = ACPI_EXAMPLE;
AcpiDbgLevel = ACPI_LV_INIT;
ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "Example Debug output\n"));
/* Example warning and error output */
ACPI_INFO ((AE_INFO, "ACPICA example info message"));
ACPI_WARNING ((AE_INFO, "ACPICA example warning message"));
ACPI_ERROR ((AE_INFO, "ACPICA example error message"));
ACPI_EXCEPTION ((AE_INFO, AE_AML_OPERAND_TYPE, "Example exception message"));
ExecuteOSI ();
return (0);
}
/******************************************************************************
*
* Example ACPICA initialization code. This shows a full initialization with
* no early ACPI table access.
*
*****************************************************************************/
ACPI_STATUS
InitializeFullAcpi (void)
{
ACPI_STATUS Status;
/* Initialize the ACPICA subsystem */
Status = AcpiInitializeSubsystem ();
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "While initializing ACPICA"));
return (Status);
}
/* Initialize the ACPICA Table Manager and get all ACPI tables */
Status = AcpiInitializeTables (NULL, 16, FALSE);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "While initializing Table Manager"));
return (Status);
}
/* Create the ACPI namespace from ACPI tables */
Status = AcpiLoadTables ();
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "While loading ACPI tables"));
return (Status);
}
/* Install local handlers */
Status = InstallHandlers ();
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "While installing handlers"));
return (Status);
}
/* Initialize the ACPI hardware */
Status = AcpiEnableSubsystem (ACPI_FULL_INITIALIZATION);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "While enabling ACPICA"));
return (Status);
}
/* Complete the ACPI namespace object initialization */
Status = AcpiInitializeObjects (ACPI_FULL_INITIALIZATION);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "While initializing ACPICA objects"));
return (Status);
}
return (AE_OK);
}
/******************************************************************************
*
* Example ACPICA initialization code with early ACPI table access. This shows
* an initialization that requires early access to ACPI tables (before
* kernel dynamic memory is available)
*
*****************************************************************************/
/*
* The purpose of this static table array is to avoid the use of kernel
* dynamic memory which may not be available during early ACPI table
* access.
*/
#define ACPI_MAX_INIT_TABLES 16
static ACPI_TABLE_DESC TableArray[ACPI_MAX_INIT_TABLES];
/*
* This function would be called early in kernel initialization. After this
* is called, all ACPI tables are available to the host.
*/
ACPI_STATUS
InitializeAcpiTables (void)
{
ACPI_STATUS Status;
/* Initialize the ACPICA Table Manager and get all ACPI tables */
Status = AcpiInitializeTables (TableArray, ACPI_MAX_INIT_TABLES, TRUE);
return (Status);
}
/*
* This function would be called after the kernel is initialized and
* dynamic/virtual memory is available. It completes the initialization of
* the ACPICA subsystem.
*/
ACPI_STATUS
InitializeAcpi (void)
{
ACPI_STATUS Status;
/* Initialize the ACPICA subsystem */
Status = AcpiInitializeSubsystem ();
if (ACPI_FAILURE (Status))
{
return (Status);
}
/* Copy the root table list to dynamic memory */
Status = AcpiReallocateRootTable ();
if (ACPI_FAILURE (Status))
{
return (Status);
}
/* Create the ACPI namespace from ACPI tables */
Status = AcpiLoadTables ();
if (ACPI_FAILURE (Status))
{
return (Status);
}
/* Install local handlers */
Status = InstallHandlers ();
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "While installing handlers"));
return (Status);
}
/* Initialize the ACPI hardware */
Status = AcpiEnableSubsystem (ACPI_FULL_INITIALIZATION);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/* Complete the ACPI namespace object initialization */
Status = AcpiInitializeObjects (ACPI_FULL_INITIALIZATION);
if (ACPI_FAILURE (Status))
{
return (Status);
}
return (AE_OK);
}
/******************************************************************************
*
* Example ACPICA handler and handler installation
*
*****************************************************************************/
void
NotifyHandler (
ACPI_HANDLE Device,
UINT32 Value,
void *Context)
{
ACPI_INFO ((AE_INFO, "Received a notify 0x%X", Value));
}
ACPI_STATUS
InstallHandlers (void)
{
ACPI_STATUS Status;
/* Install global notify handler */
Status = AcpiInstallNotifyHandler (ACPI_ROOT_OBJECT, ACPI_SYSTEM_NOTIFY,
NotifyHandler, NULL);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "While installing Notify handler"));
return (Status);
}
return (AE_OK);
}
/******************************************************************************
*
* Example control method execution.
*
* _OSI is a predefined method that is implemented internally within ACPICA.
*
* Shows the following elements:
*
* 1) How to setup a control method argument and argument list
* 2) How to setup the return value object
* 3) How to invoke AcpiEvaluateObject
* 4) How to check the returned ACPI_STATUS
* 5) How to analyze the return value
*
*****************************************************************************/
void
ExecuteOSI (void)
{
ACPI_STATUS Status;
ACPI_OBJECT_LIST ArgList;
ACPI_OBJECT Arg[1];
ACPI_BUFFER ReturnValue;
ACPI_OBJECT *Object;
ACPI_INFO ((AE_INFO, "Executing OSI method"));
/* Setup input argument */
ArgList.Count = 1;
ArgList.Pointer = Arg;
Arg[0].Type = ACPI_TYPE_STRING;
Arg[0].String.Pointer = "Windows 2001";
Arg
[0].
String.
Length = strlen (Arg
[0].
String.
Pointer);
/* Ask ACPICA to allocate space for the return object */
ReturnValue.Length = ACPI_ALLOCATE_BUFFER;
Status = AcpiEvaluateObject (NULL, "\\_OSI", &ArgList, &ReturnValue);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "While executing _OSI"));
return;
}
/* Ensure that the return object is large enough */
if (ReturnValue.Length < sizeof (ACPI_OBJECT))
{
AcpiOsPrintf ("Return value from _OSI method too small, %.8X\n",
ReturnValue.Length);
return;
}
/* Expect an integer return value from execution of _OSI */
Object = ReturnValue.Pointer;
if (Object->Type != ACPI_TYPE_INTEGER)
{
AcpiOsPrintf ("Invalid return type from _OSI, %.2X\n", Object->Type);
}
ACPI_INFO ((AE_INFO, "_OSI returned 0x%8.8X", (UINT32) Object->Integer.Value));
AcpiOsFree (Object);
return;
}
/******************************************************************************
*
* OSL support (only needed to link to the windows OSL)
*
*****************************************************************************/
FILE *AcpiGbl_DebugFile;
ACPI_PHYSICAL_ADDRESS
AeLocalGetRootPointer (
void)
{
return (0);
}