- 99% of the code is Intel's ACPICA. The license is compliant with BSD and GNU and virtually all systems that use ACPI use this code, For instance it is part of the Linux kernel. - The only minix specific files are acpi.c osminixxf.c platform/acminix.h and include/minix/acpi.h - At the moment the driver does not register interrupt hooks which I believe is mainly for handling PnP, events like "battery level is low" and power management. Should not be difficult to add it if need be. - The interface to the outside world is virtually non-existent except a trivial message based service for PCI driver to query which device is connected to what IRQ line. This will evolve as more components start using this driver. VM, Scheduler and IOMMU are the possible users right now. - because of dependency on a native 64bit (long long, part of c99) it is compiled only with a gnu-like compilers which in case of Minix includes gcc llvm-gcc and clang
575 lines
19 KiB
C
575 lines
19 KiB
C
/******************************************************************************
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*
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* Module Name: uteval - Object evaluation
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __UTEVAL_C__
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#include "acpi.h"
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#include "accommon.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME ("uteval")
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/*
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* Strings supported by the _OSI predefined (internal) method.
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*
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* March 2009: Removed "Linux" as this host no longer wants to respond true
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* for this string. Basically, the only safe OS strings are windows-related
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* and in many or most cases represent the only test path within the
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* BIOS-provided ASL code.
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*
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* The second element of each entry is used to track the newest version of
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* Windows that the BIOS has requested.
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*/
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static const ACPI_INTERFACE_INFO AcpiInterfacesSupported[] =
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{
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/* Operating System Vendor Strings */
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{"Windows 2000", ACPI_OSI_WIN_2000}, /* Windows 2000 */
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{"Windows 2001", ACPI_OSI_WIN_XP}, /* Windows XP */
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{"Windows 2001 SP1", ACPI_OSI_WIN_XP_SP1}, /* Windows XP SP1 */
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{"Windows 2001.1", ACPI_OSI_WINSRV_2003}, /* Windows Server 2003 */
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{"Windows 2001 SP2", ACPI_OSI_WIN_XP_SP2}, /* Windows XP SP2 */
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{"Windows 2001.1 SP1", ACPI_OSI_WINSRV_2003_SP1}, /* Windows Server 2003 SP1 - Added 03/2006 */
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{"Windows 2006", ACPI_OSI_WIN_VISTA}, /* Windows Vista - Added 03/2006 */
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{"Windows 2006.1", ACPI_OSI_WINSRV_2008}, /* Windows Server 2008 - Added 09/2009 */
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{"Windows 2006 SP1", ACPI_OSI_WIN_VISTA_SP1}, /* Windows Vista SP1 - Added 09/2009 */
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{"Windows 2009", ACPI_OSI_WIN_7}, /* Windows 7 and Server 2008 R2 - Added 09/2009 */
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/* Feature Group Strings */
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{"Extended Address Space Descriptor", 0}
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/*
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* All "optional" feature group strings (features that are implemented
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* by the host) should be implemented in the host version of
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* AcpiOsValidateInterface and should not be added here.
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*/
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};
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtOsiImplementation
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*
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* PARAMETERS: WalkState - Current walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Implementation of the _OSI predefined control method
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiUtOsiImplementation (
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_STATUS Status;
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ACPI_OPERAND_OBJECT *StringDesc;
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ACPI_OPERAND_OBJECT *ReturnDesc;
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UINT32 ReturnValue;
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UINT32 i;
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ACPI_FUNCTION_TRACE (UtOsiImplementation);
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/* Validate the string input argument */
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StringDesc = WalkState->Arguments[0].Object;
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if (!StringDesc || (StringDesc->Common.Type != ACPI_TYPE_STRING))
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{
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return_ACPI_STATUS (AE_TYPE);
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}
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/* Create a return object */
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ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
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if (!ReturnDesc)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Default return value is 0, NOT SUPPORTED */
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ReturnValue = 0;
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/* Compare input string to static table of supported interfaces */
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for (i = 0; i < ACPI_ARRAY_LENGTH (AcpiInterfacesSupported); i++)
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{
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if (!ACPI_STRCMP (StringDesc->String.Pointer,
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AcpiInterfacesSupported[i].Name))
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{
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/*
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* The interface is supported.
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* Update the OsiData if necessary. We keep track of the latest
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* version of Windows that has been requested by the BIOS.
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*/
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if (AcpiInterfacesSupported[i].Value > AcpiGbl_OsiData)
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{
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AcpiGbl_OsiData = AcpiInterfacesSupported[i].Value;
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}
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ReturnValue = ACPI_UINT32_MAX;
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goto Exit;
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}
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}
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/*
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* Did not match the string in the static table, call the host OSL to
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* check for a match with one of the optional strings (such as
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* "Module Device", "3.0 Thermal Model", etc.)
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*/
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Status = AcpiOsValidateInterface (StringDesc->String.Pointer);
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if (ACPI_SUCCESS (Status))
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{
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/* The interface is supported */
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ReturnValue = ACPI_UINT32_MAX;
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}
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Exit:
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ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INFO,
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"ACPI: BIOS _OSI(%s) is %ssupported\n",
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StringDesc->String.Pointer, ReturnValue == 0 ? "not " : ""));
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/* Complete the return value */
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ReturnDesc->Integer.Value = ReturnValue;
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WalkState->ReturnDesc = ReturnDesc;
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtEvaluateObject
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*
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* PARAMETERS: PrefixNode - Starting node
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* Path - Path to object from starting node
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* ExpectedReturnTypes - Bitmap of allowed return types
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* ReturnDesc - Where a return value is stored
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*
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* RETURN: Status
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*
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* DESCRIPTION: Evaluates a namespace object and verifies the type of the
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* return object. Common code that simplifies accessing objects
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* that have required return objects of fixed types.
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*
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* NOTE: Internal function, no parameter validation
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiUtEvaluateObject (
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ACPI_NAMESPACE_NODE *PrefixNode,
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char *Path,
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UINT32 ExpectedReturnBtypes,
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ACPI_OPERAND_OBJECT **ReturnDesc)
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{
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ACPI_EVALUATE_INFO *Info;
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ACPI_STATUS Status;
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UINT32 ReturnBtype;
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ACPI_FUNCTION_TRACE (UtEvaluateObject);
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/* Allocate the evaluation information block */
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Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
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if (!Info)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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Info->PrefixNode = PrefixNode;
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Info->Pathname = Path;
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/* Evaluate the object/method */
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Status = AcpiNsEvaluate (Info);
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if (ACPI_FAILURE (Status))
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{
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if (Status == AE_NOT_FOUND)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[%4.4s.%s] was not found\n",
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AcpiUtGetNodeName (PrefixNode), Path));
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}
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else
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{
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ACPI_ERROR_METHOD ("Method execution failed",
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PrefixNode, Path, Status);
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}
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goto Cleanup;
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}
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/* Did we get a return object? */
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if (!Info->ReturnObject)
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{
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if (ExpectedReturnBtypes)
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{
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ACPI_ERROR_METHOD ("No object was returned from",
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PrefixNode, Path, AE_NOT_EXIST);
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Status = AE_NOT_EXIST;
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}
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goto Cleanup;
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}
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/* Map the return object type to the bitmapped type */
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switch ((Info->ReturnObject)->Common.Type)
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{
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case ACPI_TYPE_INTEGER:
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ReturnBtype = ACPI_BTYPE_INTEGER;
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break;
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case ACPI_TYPE_BUFFER:
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ReturnBtype = ACPI_BTYPE_BUFFER;
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break;
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case ACPI_TYPE_STRING:
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ReturnBtype = ACPI_BTYPE_STRING;
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break;
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case ACPI_TYPE_PACKAGE:
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ReturnBtype = ACPI_BTYPE_PACKAGE;
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break;
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default:
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ReturnBtype = 0;
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break;
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}
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if ((AcpiGbl_EnableInterpreterSlack) &&
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(!ExpectedReturnBtypes))
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{
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/*
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* We received a return object, but one was not expected. This can
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* happen frequently if the "implicit return" feature is enabled.
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* Just delete the return object and return AE_OK.
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*/
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AcpiUtRemoveReference (Info->ReturnObject);
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goto Cleanup;
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}
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/* Is the return object one of the expected types? */
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if (!(ExpectedReturnBtypes & ReturnBtype))
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{
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ACPI_ERROR_METHOD ("Return object type is incorrect",
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PrefixNode, Path, AE_TYPE);
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ACPI_ERROR ((AE_INFO,
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"Type returned from %s was incorrect: %s, expected Btypes: 0x%X",
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Path, AcpiUtGetObjectTypeName (Info->ReturnObject),
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ExpectedReturnBtypes));
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/* On error exit, we must delete the return object */
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AcpiUtRemoveReference (Info->ReturnObject);
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Status = AE_TYPE;
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goto Cleanup;
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}
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/* Object type is OK, return it */
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*ReturnDesc = Info->ReturnObject;
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Cleanup:
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ACPI_FREE (Info);
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiUtEvaluateNumericObject
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*
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* PARAMETERS: ObjectName - Object name to be evaluated
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* DeviceNode - Node for the device
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* Value - Where the value is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Evaluates a numeric namespace object for a selected device
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* and stores result in *Value.
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*
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* NOTE: Internal function, no parameter validation
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiUtEvaluateNumericObject (
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char *ObjectName,
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ACPI_NAMESPACE_NODE *DeviceNode,
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UINT64 *Value)
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{
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_STATUS Status;
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|
|
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ACPI_FUNCTION_TRACE (UtEvaluateNumericObject);
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|
|
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Status = AcpiUtEvaluateObject (DeviceNode, ObjectName,
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ACPI_BTYPE_INTEGER, &ObjDesc);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Get the returned Integer */
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*Value = ObjDesc->Integer.Value;
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/* On exit, we must delete the return object */
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AcpiUtRemoveReference (ObjDesc);
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return_ACPI_STATUS (Status);
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}
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|
|
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|
/*******************************************************************************
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|
*
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|
* FUNCTION: AcpiUtExecute_STA
|
|
*
|
|
* PARAMETERS: DeviceNode - Node for the device
|
|
* Flags - Where the status flags are returned
|
|
*
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|
* RETURN: Status
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|
*
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|
* DESCRIPTION: Executes _STA for selected device and stores results in
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* *Flags.
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|
*
|
|
* NOTE: Internal function, no parameter validation
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*
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|
******************************************************************************/
|
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|
|
ACPI_STATUS
|
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AcpiUtExecute_STA (
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ACPI_NAMESPACE_NODE *DeviceNode,
|
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UINT32 *Flags)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_STATUS Status;
|
|
|
|
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|
ACPI_FUNCTION_TRACE (UtExecute_STA);
|
|
|
|
|
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Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__STA,
|
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ACPI_BTYPE_INTEGER, &ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
if (AE_NOT_FOUND == Status)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"_STA on %4.4s was not found, assuming device is present\n",
|
|
AcpiUtGetNodeName (DeviceNode)));
|
|
|
|
*Flags = ACPI_UINT32_MAX;
|
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Status = AE_OK;
|
|
}
|
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|
|
return_ACPI_STATUS (Status);
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}
|
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|
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/* Extract the status flags */
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|
|
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*Flags = (UINT32) ObjDesc->Integer.Value;
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|
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/* On exit, we must delete the return object */
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|
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AcpiUtRemoveReference (ObjDesc);
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return_ACPI_STATUS (Status);
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}
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|
|
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/*******************************************************************************
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*
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|
* FUNCTION: AcpiUtExecutePowerMethods
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|
*
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|
* PARAMETERS: DeviceNode - Node for the device
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|
* MethodNames - Array of power method names
|
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* MethodCount - Number of methods to execute
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* OutValues - Where the power method values are returned
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*
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|
* RETURN: Status, OutValues
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|
*
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|
* DESCRIPTION: Executes the specified power methods for the device and returns
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* the result(s).
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*
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* NOTE: Internal function, no parameter validation
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*
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|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtExecutePowerMethods (
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ACPI_NAMESPACE_NODE *DeviceNode,
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const char **MethodNames,
|
|
UINT8 MethodCount,
|
|
UINT8 *OutValues)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_STATUS Status;
|
|
ACPI_STATUS FinalStatus = AE_NOT_FOUND;
|
|
UINT32 i;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (UtExecutePowerMethods);
|
|
|
|
|
|
for (i = 0; i < MethodCount; i++)
|
|
{
|
|
/*
|
|
* Execute the power method (_SxD or _SxW). The only allowable
|
|
* return type is an Integer.
|
|
*/
|
|
Status = AcpiUtEvaluateObject (DeviceNode,
|
|
ACPI_CAST_PTR (char, MethodNames[i]),
|
|
ACPI_BTYPE_INTEGER, &ObjDesc);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
OutValues[i] = (UINT8) ObjDesc->Integer.Value;
|
|
|
|
/* Delete the return object */
|
|
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
FinalStatus = AE_OK; /* At least one value is valid */
|
|
continue;
|
|
}
|
|
|
|
OutValues[i] = ACPI_UINT8_MAX;
|
|
if (Status == AE_NOT_FOUND)
|
|
{
|
|
continue; /* Ignore if not found */
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Failed %s on Device %4.4s, %s\n",
|
|
ACPI_CAST_PTR (char, MethodNames[i]),
|
|
AcpiUtGetNodeName (DeviceNode), AcpiFormatException (Status)));
|
|
}
|
|
|
|
return_ACPI_STATUS (FinalStatus);
|
|
}
|