875 lines
28 KiB
C
875 lines
28 KiB
C
/*******************************************************************************
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*
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* Module Name: rsutils - Utilities for the resource manager
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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 - 2011, 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 __RSUTILS_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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#include "acresrc.h"
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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME ("rsutils")
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsDecodeBitmask
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*
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* PARAMETERS: Mask - Bitmask to decode
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* List - Where the converted list is returned
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*
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* RETURN: Count of bits set (length of list)
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*
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* DESCRIPTION: Convert a bit mask into a list of values
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*
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******************************************************************************/
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UINT8
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AcpiRsDecodeBitmask (
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UINT16 Mask,
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UINT8 *List)
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{
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UINT8 i;
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UINT8 BitCount;
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ACPI_FUNCTION_ENTRY ();
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/* Decode the mask bits */
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for (i = 0, BitCount = 0; Mask; i++)
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{
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if (Mask & 0x0001)
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{
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List[BitCount] = i;
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BitCount++;
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}
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Mask >>= 1;
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}
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return (BitCount);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsEncodeBitmask
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*
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* PARAMETERS: List - List of values to encode
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* Count - Length of list
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*
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* RETURN: Encoded bitmask
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*
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* DESCRIPTION: Convert a list of values to an encoded bitmask
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*
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******************************************************************************/
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UINT16
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AcpiRsEncodeBitmask (
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UINT8 *List,
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UINT8 Count)
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{
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UINT32 i;
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UINT16 Mask;
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ACPI_FUNCTION_ENTRY ();
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/* Encode the list into a single bitmask */
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for (i = 0, Mask = 0; i < Count; i++)
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{
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Mask |= (0x1 << List[i]);
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}
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return (Mask);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsMoveData
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*
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* PARAMETERS: Destination - Pointer to the destination descriptor
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* Source - Pointer to the source descriptor
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* ItemCount - How many items to move
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* MoveType - Byte width
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*
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* RETURN: None
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*
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* DESCRIPTION: Move multiple data items from one descriptor to another. Handles
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* alignment issues and endian issues if necessary, as configured
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* via the ACPI_MOVE_* macros. (This is why a memcpy is not used)
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*
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******************************************************************************/
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void
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AcpiRsMoveData (
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void *Destination,
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void *Source,
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UINT16 ItemCount,
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UINT8 MoveType)
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{
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UINT32 i;
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ACPI_FUNCTION_ENTRY ();
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/* One move per item */
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for (i = 0; i < ItemCount; i++)
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{
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switch (MoveType)
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{
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/*
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* For the 8-bit case, we can perform the move all at once
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* since there are no alignment or endian issues
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*/
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case ACPI_RSC_MOVE8:
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ACPI_MEMCPY (Destination, Source, ItemCount);
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return;
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/*
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* 16-, 32-, and 64-bit cases must use the move macros that perform
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* endian conversion and/or accomodate hardware that cannot perform
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* misaligned memory transfers
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*/
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case ACPI_RSC_MOVE16:
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ACPI_MOVE_16_TO_16 (&ACPI_CAST_PTR (UINT16, Destination)[i],
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&ACPI_CAST_PTR (UINT16, Source)[i]);
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break;
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case ACPI_RSC_MOVE32:
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ACPI_MOVE_32_TO_32 (&ACPI_CAST_PTR (UINT32, Destination)[i],
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&ACPI_CAST_PTR (UINT32, Source)[i]);
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break;
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case ACPI_RSC_MOVE64:
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ACPI_MOVE_64_TO_64 (&ACPI_CAST_PTR (UINT64, Destination)[i],
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&ACPI_CAST_PTR (UINT64, Source)[i]);
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break;
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default:
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return;
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}
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsSetResourceLength
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*
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* PARAMETERS: TotalLength - Length of the AML descriptor, including
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* the header and length fields.
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* Aml - Pointer to the raw AML descriptor
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*
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* RETURN: None
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*
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* DESCRIPTION: Set the ResourceLength field of an AML
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* resource descriptor, both Large and Small descriptors are
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* supported automatically. Note: Descriptor Type field must
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* be valid.
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*
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******************************************************************************/
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void
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AcpiRsSetResourceLength (
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ACPI_RSDESC_SIZE TotalLength,
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AML_RESOURCE *Aml)
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{
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ACPI_RS_LENGTH ResourceLength;
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ACPI_FUNCTION_ENTRY ();
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/* Length is the total descriptor length minus the header length */
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ResourceLength = (ACPI_RS_LENGTH)
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(TotalLength - AcpiUtGetResourceHeaderLength (Aml));
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/* Length is stored differently for large and small descriptors */
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if (Aml->SmallHeader.DescriptorType & ACPI_RESOURCE_NAME_LARGE)
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{
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/* Large descriptor -- bytes 1-2 contain the 16-bit length */
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ACPI_MOVE_16_TO_16 (&Aml->LargeHeader.ResourceLength, &ResourceLength);
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}
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else
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{
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/* Small descriptor -- bits 2:0 of byte 0 contain the length */
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Aml->SmallHeader.DescriptorType = (UINT8)
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/* Clear any existing length, preserving descriptor type bits */
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((Aml->SmallHeader.DescriptorType & ~ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK)
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| ResourceLength);
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsSetResourceHeader
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*
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* PARAMETERS: DescriptorType - Byte to be inserted as the type
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* TotalLength - Length of the AML descriptor, including
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* the header and length fields.
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* Aml - Pointer to the raw AML descriptor
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*
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* RETURN: None
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*
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* DESCRIPTION: Set the DescriptorType and ResourceLength fields of an AML
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* resource descriptor, both Large and Small descriptors are
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* supported automatically
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*
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******************************************************************************/
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void
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AcpiRsSetResourceHeader (
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UINT8 DescriptorType,
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ACPI_RSDESC_SIZE TotalLength,
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AML_RESOURCE *Aml)
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{
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ACPI_FUNCTION_ENTRY ();
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/* Set the Resource Type */
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Aml->SmallHeader.DescriptorType = DescriptorType;
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/* Set the Resource Length */
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AcpiRsSetResourceLength (TotalLength, Aml);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsStrcpy
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*
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* PARAMETERS: Destination - Pointer to the destination string
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* Source - Pointer to the source string
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*
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* RETURN: String length, including NULL terminator
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*
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* DESCRIPTION: Local string copy that returns the string length, saving a
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* strcpy followed by a strlen.
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*
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******************************************************************************/
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static UINT16
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AcpiRsStrcpy (
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char *Destination,
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char *Source)
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{
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UINT16 i;
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ACPI_FUNCTION_ENTRY ();
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for (i = 0; Source[i]; i++)
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{
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Destination[i] = Source[i];
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}
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Destination[i] = 0;
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/* Return string length including the NULL terminator */
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return ((UINT16) (i + 1));
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsGetResourceSource
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*
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* PARAMETERS: ResourceLength - Length field of the descriptor
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* MinimumLength - Minimum length of the descriptor (minus
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* any optional fields)
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* ResourceSource - Where the ResourceSource is returned
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* Aml - Pointer to the raw AML descriptor
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* StringPtr - (optional) where to store the actual
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* ResourceSource string
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*
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* RETURN: Length of the string plus NULL terminator, rounded up to native
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* word boundary
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*
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* DESCRIPTION: Copy the optional ResourceSource data from a raw AML descriptor
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* to an internal resource descriptor
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*
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******************************************************************************/
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ACPI_RS_LENGTH
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AcpiRsGetResourceSource (
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ACPI_RS_LENGTH ResourceLength,
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ACPI_RS_LENGTH MinimumLength,
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ACPI_RESOURCE_SOURCE *ResourceSource,
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AML_RESOURCE *Aml,
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char *StringPtr)
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{
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ACPI_RSDESC_SIZE TotalLength;
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UINT8 *AmlResourceSource;
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ACPI_FUNCTION_ENTRY ();
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TotalLength = ResourceLength + sizeof (AML_RESOURCE_LARGE_HEADER);
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AmlResourceSource = ACPI_ADD_PTR (UINT8, Aml, MinimumLength);
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/*
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* ResourceSource is present if the length of the descriptor is longer than
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* the minimum length.
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*
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* Note: Some resource descriptors will have an additional null, so
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* we add 1 to the minimum length.
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*/
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if (TotalLength > (ACPI_RSDESC_SIZE) (MinimumLength + 1))
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{
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/* Get the ResourceSourceIndex */
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ResourceSource->Index = AmlResourceSource[0];
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ResourceSource->StringPtr = StringPtr;
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if (!StringPtr)
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{
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/*
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* String destination pointer is not specified; Set the String
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* pointer to the end of the current ResourceSource structure.
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*/
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ResourceSource->StringPtr = ACPI_ADD_PTR (char, ResourceSource,
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sizeof (ACPI_RESOURCE_SOURCE));
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}
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/*
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* In order for the Resource length to be a multiple of the native
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* word, calculate the length of the string (+1 for NULL terminator)
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* and expand to the next word multiple.
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*
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* Zero the entire area of the buffer.
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*/
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TotalLength = (UINT32) ACPI_STRLEN (
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ACPI_CAST_PTR (char, &AmlResourceSource[1])) + 1;
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TotalLength = (UINT32) ACPI_ROUND_UP_TO_NATIVE_WORD (TotalLength);
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ACPI_MEMSET (ResourceSource->StringPtr, 0, TotalLength);
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/* Copy the ResourceSource string to the destination */
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ResourceSource->StringLength = AcpiRsStrcpy (ResourceSource->StringPtr,
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ACPI_CAST_PTR (char, &AmlResourceSource[1]));
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return ((ACPI_RS_LENGTH) TotalLength);
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}
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/* ResourceSource is not present */
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ResourceSource->Index = 0;
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ResourceSource->StringLength = 0;
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ResourceSource->StringPtr = NULL;
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return (0);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsSetResourceSource
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*
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* PARAMETERS: Aml - Pointer to the raw AML descriptor
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* MinimumLength - Minimum length of the descriptor (minus
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* any optional fields)
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* ResourceSource - Internal ResourceSource
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*
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* RETURN: Total length of the AML descriptor
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*
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* DESCRIPTION: Convert an optional ResourceSource from internal format to a
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* raw AML resource descriptor
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*
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******************************************************************************/
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ACPI_RSDESC_SIZE
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AcpiRsSetResourceSource (
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AML_RESOURCE *Aml,
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ACPI_RS_LENGTH MinimumLength,
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ACPI_RESOURCE_SOURCE *ResourceSource)
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{
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UINT8 *AmlResourceSource;
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ACPI_RSDESC_SIZE DescriptorLength;
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ACPI_FUNCTION_ENTRY ();
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DescriptorLength = MinimumLength;
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/* Non-zero string length indicates presence of a ResourceSource */
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if (ResourceSource->StringLength)
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{
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/* Point to the end of the AML descriptor */
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AmlResourceSource = ACPI_ADD_PTR (UINT8, Aml, MinimumLength);
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/* Copy the ResourceSourceIndex */
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AmlResourceSource[0] = (UINT8) ResourceSource->Index;
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/* Copy the ResourceSource string */
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ACPI_STRCPY (ACPI_CAST_PTR (char, &AmlResourceSource[1]),
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ResourceSource->StringPtr);
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/*
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* Add the length of the string (+ 1 for null terminator) to the
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* final descriptor length
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*/
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DescriptorLength += ((ACPI_RSDESC_SIZE) ResourceSource->StringLength + 1);
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}
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/* Return the new total length of the AML descriptor */
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return (DescriptorLength);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsGetPrtMethodData
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*
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* PARAMETERS: Node - Device node
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* RetBuffer - Pointer to a buffer structure for the
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* results
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to get the _PRT value of an object
|
|
* contained in an object specified by the handle passed in
|
|
*
|
|
* If the function fails an appropriate status will be returned
|
|
* and the contents of the callers buffer is undefined.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRsGetPrtMethodData (
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
ACPI_BUFFER *RetBuffer)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (RsGetPrtMethodData);
|
|
|
|
|
|
/* Parameters guaranteed valid by caller */
|
|
|
|
/* Execute the method, no parameters */
|
|
|
|
Status = AcpiUtEvaluateObject (Node, METHOD_NAME__PRT,
|
|
ACPI_BTYPE_PACKAGE, &ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* Create a resource linked list from the byte stream buffer that comes
|
|
* back from the _CRS method execution.
|
|
*/
|
|
Status = AcpiRsCreatePciRoutingTable (ObjDesc, RetBuffer);
|
|
|
|
/* On exit, we must delete the object returned by EvaluateObject */
|
|
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiRsGetCrsMethodData
|
|
*
|
|
* PARAMETERS: Node - Device node
|
|
* RetBuffer - Pointer to a buffer structure for the
|
|
* results
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: This function is called to get the _CRS value of an object
|
|
* contained in an object specified by the handle passed in
|
|
*
|
|
* If the function fails an appropriate status will be returned
|
|
* and the contents of the callers buffer is undefined.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRsGetCrsMethodData (
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
ACPI_BUFFER *RetBuffer)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (RsGetCrsMethodData);
|
|
|
|
|
|
/* Parameters guaranteed valid by caller */
|
|
|
|
/* Execute the method, no parameters */
|
|
|
|
Status = AcpiUtEvaluateObject (Node, METHOD_NAME__CRS,
|
|
ACPI_BTYPE_BUFFER, &ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* Make the call to create a resource linked list from the
|
|
* byte stream buffer that comes back from the _CRS method
|
|
* execution.
|
|
*/
|
|
Status = AcpiRsCreateResourceList (ObjDesc, RetBuffer);
|
|
|
|
/* On exit, we must delete the object returned by evaluateObject */
|
|
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiRsGetPrsMethodData
|
|
*
|
|
* PARAMETERS: Node - Device node
|
|
* RetBuffer - Pointer to a buffer structure for the
|
|
* results
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: This function is called to get the _PRS value of an object
|
|
* contained in an object specified by the handle passed in
|
|
*
|
|
* If the function fails an appropriate status will be returned
|
|
* and the contents of the callers buffer is undefined.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRsGetPrsMethodData (
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
ACPI_BUFFER *RetBuffer)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (RsGetPrsMethodData);
|
|
|
|
|
|
/* Parameters guaranteed valid by caller */
|
|
|
|
/* Execute the method, no parameters */
|
|
|
|
Status = AcpiUtEvaluateObject (Node, METHOD_NAME__PRS,
|
|
ACPI_BTYPE_BUFFER, &ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* Make the call to create a resource linked list from the
|
|
* byte stream buffer that comes back from the _CRS method
|
|
* execution.
|
|
*/
|
|
Status = AcpiRsCreateResourceList (ObjDesc, RetBuffer);
|
|
|
|
/* On exit, we must delete the object returned by evaluateObject */
|
|
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiRsGetMethodData
|
|
*
|
|
* PARAMETERS: Handle - Handle to the containing object
|
|
* Path - Path to method, relative to Handle
|
|
* RetBuffer - Pointer to a buffer structure for the
|
|
* results
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: This function is called to get the _CRS or _PRS value of an
|
|
* object contained in an object specified by the handle passed in
|
|
*
|
|
* If the function fails an appropriate status will be returned
|
|
* and the contents of the callers buffer is undefined.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRsGetMethodData (
|
|
ACPI_HANDLE Handle,
|
|
char *Path,
|
|
ACPI_BUFFER *RetBuffer)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (RsGetMethodData);
|
|
|
|
|
|
/* Parameters guaranteed valid by caller */
|
|
|
|
/* Execute the method, no parameters */
|
|
|
|
Status = AcpiUtEvaluateObject (Handle, Path, ACPI_BTYPE_BUFFER, &ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* Make the call to create a resource linked list from the
|
|
* byte stream buffer that comes back from the method
|
|
* execution.
|
|
*/
|
|
Status = AcpiRsCreateResourceList (ObjDesc, RetBuffer);
|
|
|
|
/* On exit, we must delete the object returned by EvaluateObject */
|
|
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiRsSetSrsMethodData
|
|
*
|
|
* PARAMETERS: Node - Device node
|
|
* InBuffer - Pointer to a buffer structure of the
|
|
* parameter
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: This function is called to set the _SRS of an object contained
|
|
* in an object specified by the handle passed in
|
|
*
|
|
* If the function fails an appropriate status will be returned
|
|
* and the contents of the callers buffer is undefined.
|
|
*
|
|
* Note: Parameters guaranteed valid by caller
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRsSetSrsMethodData (
|
|
ACPI_NAMESPACE_NODE *Node,
|
|
ACPI_BUFFER *InBuffer)
|
|
{
|
|
ACPI_EVALUATE_INFO *Info;
|
|
ACPI_OPERAND_OBJECT *Args[2];
|
|
ACPI_STATUS Status;
|
|
ACPI_BUFFER Buffer;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (RsSetSrsMethodData);
|
|
|
|
|
|
/* Allocate and initialize the evaluation information block */
|
|
|
|
Info = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EVALUATE_INFO));
|
|
if (!Info)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
Info->PrefixNode = Node;
|
|
Info->Pathname = METHOD_NAME__SRS;
|
|
Info->Parameters = Args;
|
|
Info->Flags = ACPI_IGNORE_RETURN_VALUE;
|
|
|
|
/*
|
|
* The InBuffer parameter will point to a linked list of
|
|
* resource parameters. It needs to be formatted into a
|
|
* byte stream to be sent in as an input parameter to _SRS
|
|
*
|
|
* Convert the linked list into a byte stream
|
|
*/
|
|
Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
|
|
Status = AcpiRsCreateAmlResources (InBuffer->Pointer, &Buffer);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Create and initialize the method parameter object */
|
|
|
|
Args[0] = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER);
|
|
if (!Args[0])
|
|
{
|
|
/*
|
|
* Must free the buffer allocated above (otherwise it is freed
|
|
* later)
|
|
*/
|
|
ACPI_FREE (Buffer.Pointer);
|
|
Status = AE_NO_MEMORY;
|
|
goto Cleanup;
|
|
}
|
|
|
|
Args[0]->Buffer.Length = (UINT32) Buffer.Length;
|
|
Args[0]->Buffer.Pointer = Buffer.Pointer;
|
|
Args[0]->Common.Flags = AOPOBJ_DATA_VALID;
|
|
Args[1] = NULL;
|
|
|
|
/* Execute the method, no return value is expected */
|
|
|
|
Status = AcpiNsEvaluate (Info);
|
|
|
|
/* Clean up and return the status from AcpiNsEvaluate */
|
|
|
|
AcpiUtRemoveReference (Args[0]);
|
|
|
|
Cleanup:
|
|
ACPI_FREE (Info);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|