954 lines
31 KiB
C
954 lines
31 KiB
C
/*******************************************************************************
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*
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* Module Name: rscalc - Calculate stream and list lengths
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* $Revision: 39 $
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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 - 2002, 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 __RSCALC_C__
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#include "acpi.h"
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#include "acresrc.h"
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#include "amlcode.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME ("rscalc")
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsCalculateByteStreamLength
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*
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* PARAMETERS: LinkedList - Pointer to the resource linked list
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* SizeNeeded - UINT32 pointer of the size buffer needed
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* to properly return the parsed data
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*
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* RETURN: Status
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*
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* DESCRIPTION: Takes the resource byte stream and parses it once, calculating
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* the size buffer needed to hold the linked list that conveys
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* the resource data.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiRsCalculateByteStreamLength (
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ACPI_RESOURCE *LinkedList,
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ACPI_SIZE *SizeNeeded)
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{
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ACPI_SIZE ByteStreamSizeNeeded = 0;
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ACPI_SIZE SegmentSize;
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ACPI_RESOURCE_EXT_IRQ *ExIrq = NULL;
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BOOLEAN Done = FALSE;
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ACPI_FUNCTION_TRACE ("RsCalculateByteStreamLength");
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while (!Done)
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{
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/*
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* Init the variable that will hold the size to add to the total.
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*/
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SegmentSize = 0;
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switch (LinkedList->Id)
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{
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case ACPI_RSTYPE_IRQ:
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/*
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* IRQ Resource
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* For an IRQ Resource, Byte 3, although optional, will
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* always be created - it holds IRQ information.
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*/
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SegmentSize = 4;
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break;
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case ACPI_RSTYPE_DMA:
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/*
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* DMA Resource
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* For this resource the size is static
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*/
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SegmentSize = 3;
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break;
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case ACPI_RSTYPE_START_DPF:
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/*
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* Start Dependent Functions Resource
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* For a StartDependentFunctions Resource, Byte 1,
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* although optional, will always be created.
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*/
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SegmentSize = 2;
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break;
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case ACPI_RSTYPE_END_DPF:
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/*
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* End Dependent Functions Resource
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* For this resource the size is static
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*/
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SegmentSize = 1;
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break;
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case ACPI_RSTYPE_IO:
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/*
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* IO Port Resource
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* For this resource the size is static
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*/
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SegmentSize = 8;
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break;
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case ACPI_RSTYPE_FIXED_IO:
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/*
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* Fixed IO Port Resource
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* For this resource the size is static
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*/
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SegmentSize = 4;
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break;
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case ACPI_RSTYPE_VENDOR:
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/*
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* Vendor Defined Resource
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* For a Vendor Specific resource, if the Length is
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* between 1 and 7 it will be created as a Small
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* Resource data type, otherwise it is a Large
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* Resource data type.
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*/
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if (LinkedList->Data.VendorSpecific.Length > 7)
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{
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SegmentSize = 3;
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}
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else
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{
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SegmentSize = 1;
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}
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SegmentSize += LinkedList->Data.VendorSpecific.Length;
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break;
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case ACPI_RSTYPE_END_TAG:
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/*
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* End Tag
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* For this resource the size is static
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*/
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SegmentSize = 2;
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Done = TRUE;
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break;
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case ACPI_RSTYPE_MEM24:
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/*
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* 24-Bit Memory Resource
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* For this resource the size is static
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*/
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SegmentSize = 12;
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break;
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case ACPI_RSTYPE_MEM32:
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/*
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* 32-Bit Memory Range Resource
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* For this resource the size is static
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*/
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SegmentSize = 20;
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break;
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case ACPI_RSTYPE_FIXED_MEM32:
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/*
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* 32-Bit Fixed Memory Resource
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* For this resource the size is static
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*/
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SegmentSize = 12;
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break;
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case ACPI_RSTYPE_ADDRESS16:
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/*
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* 16-Bit Address Resource
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* The base size of this byte stream is 16. If a
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* Resource Source string is not NULL, add 1 for
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* the Index + the length of the null terminated
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* string Resource Source + 1 for the null.
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*/
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SegmentSize = 16;
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if (NULL != LinkedList->Data.Address16.ResourceSource.StringPtr)
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{
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SegmentSize += (1 +
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LinkedList->Data.Address16.ResourceSource.StringLength);
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}
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break;
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case ACPI_RSTYPE_ADDRESS32:
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/*
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* 32-Bit Address Resource
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* The base size of this byte stream is 26. If a Resource
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* Source string is not NULL, add 1 for the Index + the
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* length of the null terminated string Resource Source +
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* 1 for the null.
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*/
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SegmentSize = 26;
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if (NULL != LinkedList->Data.Address32.ResourceSource.StringPtr)
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{
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SegmentSize += (1 +
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LinkedList->Data.Address32.ResourceSource.StringLength);
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}
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break;
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case ACPI_RSTYPE_ADDRESS64:
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/*
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* 64-Bit Address Resource
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* The base size of this byte stream is 46. If a Resource
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* Source string is not NULL, add 1 for the Index + the
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* length of the null terminated string Resource Source +
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* 1 for the null.
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*/
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SegmentSize = 46;
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if (NULL != LinkedList->Data.Address64.ResourceSource.StringPtr)
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{
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SegmentSize += (1 +
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LinkedList->Data.Address64.ResourceSource.StringLength);
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}
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break;
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case ACPI_RSTYPE_EXT_IRQ:
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/*
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* Extended IRQ Resource
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* The base size of this byte stream is 9. This is for an
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* Interrupt table length of 1. For each additional
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* interrupt, add 4.
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* If a Resource Source string is not NULL, add 1 for the
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* Index + the length of the null terminated string
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* Resource Source + 1 for the null.
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*/
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SegmentSize = 9 +
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((LinkedList->Data.ExtendedIrq.NumberOfInterrupts - 1) * 4);
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if (NULL != ExIrq->ResourceSource.StringPtr)
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{
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SegmentSize += (1 +
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LinkedList->Data.ExtendedIrq.ResourceSource.StringLength);
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}
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break;
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default:
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/*
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* If we get here, everything is out of sync,
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* so exit with an error
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*/
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return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
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} /* switch (LinkedList->Id) */
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/*
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* Update the total
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*/
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ByteStreamSizeNeeded += SegmentSize;
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/*
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* Point to the next object
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*/
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LinkedList = ACPI_PTR_ADD (ACPI_RESOURCE,
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LinkedList, LinkedList->Length);
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}
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/*
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* This is the data the caller needs
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*/
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*SizeNeeded = ByteStreamSizeNeeded;
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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: AcpiRsCalculateListLength
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*
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* PARAMETERS: ByteStreamBuffer - Pointer to the resource byte stream
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* ByteStreamBufferLength - Size of ByteStreamBuffer
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* SizeNeeded - UINT32 pointer of the size buffer
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* needed to properly return the
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* parsed data
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*
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* RETURN: Status
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*
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* DESCRIPTION: Takes the resource byte stream and parses it once, calculating
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* the size buffer needed to hold the linked list that conveys
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* the resource data.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiRsCalculateListLength (
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UINT8 *ByteStreamBuffer,
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UINT32 ByteStreamBufferLength,
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ACPI_SIZE *SizeNeeded)
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{
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UINT32 BufferSize = 0;
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UINT32 BytesParsed = 0;
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UINT8 NumberOfInterrupts = 0;
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UINT8 NumberOfChannels = 0;
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UINT8 ResourceType;
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UINT32 StructureSize;
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UINT32 BytesConsumed;
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UINT8 *Buffer;
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UINT8 Temp8;
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UINT16 Temp16;
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UINT8 Index;
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UINT8 AdditionalBytes;
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ACPI_FUNCTION_TRACE ("RsCalculateListLength");
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while (BytesParsed < ByteStreamBufferLength)
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{
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/*
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* The next byte in the stream is the resource type
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*/
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ResourceType = AcpiRsGetResourceType (*ByteStreamBuffer);
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switch (ResourceType)
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{
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case ACPI_RDESC_TYPE_MEMORY_24:
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/*
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* 24-Bit Memory Resource
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*/
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BytesConsumed = 12;
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StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_MEM24);
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break;
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case ACPI_RDESC_TYPE_LARGE_VENDOR:
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/*
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* Vendor Defined Resource
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*/
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Buffer = ByteStreamBuffer;
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++Buffer;
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ACPI_MOVE_UNALIGNED16_TO_16 (&Temp16, Buffer);
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BytesConsumed = Temp16 + 3;
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/*
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* Ensure a 32-bit boundary for the structure
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*/
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Temp16 = (UINT16) ACPI_ROUND_UP_TO_32BITS (Temp16);
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StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_VENDOR) +
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(Temp16 * sizeof (UINT8));
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break;
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case ACPI_RDESC_TYPE_MEMORY_32:
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/*
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* 32-Bit Memory Range Resource
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*/
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BytesConsumed = 20;
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StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_MEM32);
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break;
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case ACPI_RDESC_TYPE_FIXED_MEMORY_32:
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/*
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* 32-Bit Fixed Memory Resource
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*/
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BytesConsumed = 12;
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StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_FIXED_MEM32);
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break;
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case ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE:
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/*
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* 64-Bit Address Resource
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*/
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Buffer = ByteStreamBuffer;
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++Buffer;
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ACPI_MOVE_UNALIGNED16_TO_16 (&Temp16, Buffer);
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BytesConsumed = Temp16 + 3;
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/*
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* Resource Source Index and Resource Source are
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* optional elements. Check the length of the
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* Bytestream. If it is greater than 43, that
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* means that an Index exists and is followed by
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* a null termininated string. Therefore, set
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* the temp variable to the length minus the minimum
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* byte stream length plus the byte for the Index to
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* determine the size of the NULL terminiated string.
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*/
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if (43 < Temp16)
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{
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Temp8 = (UINT8) (Temp16 - 44);
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}
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else
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{
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Temp8 = 0;
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}
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/*
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* Ensure a 64-bit boundary for the structure
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*/
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Temp8 = (UINT8) ACPI_ROUND_UP_TO_64BITS (Temp8);
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StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_ADDRESS64) +
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(Temp8 * sizeof (UINT8));
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break;
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case ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE:
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/*
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* 32-Bit Address Resource
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*/
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Buffer = ByteStreamBuffer;
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++Buffer;
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ACPI_MOVE_UNALIGNED16_TO_16 (&Temp16, Buffer);
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BytesConsumed = Temp16 + 3;
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/*
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* Resource Source Index and Resource Source are
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* optional elements. Check the length of the
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* Bytestream. If it is greater than 23, that
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* means that an Index exists and is followed by
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* a null termininated string. Therefore, set
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* the temp variable to the length minus the minimum
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* byte stream length plus the byte for the Index to
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* determine the size of the NULL terminiated string.
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*/
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if (23 < Temp16)
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{
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Temp8 = (UINT8) (Temp16 - 24);
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}
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else
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{
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Temp8 = 0;
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}
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/*
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* Ensure a 32-bit boundary for the structure
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*/
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Temp8 = (UINT8) ACPI_ROUND_UP_TO_32BITS (Temp8);
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StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_ADDRESS32) +
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(Temp8 * sizeof (UINT8));
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break;
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case ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE:
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/*
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* 16-Bit Address Resource
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*/
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Buffer = ByteStreamBuffer;
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++Buffer;
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ACPI_MOVE_UNALIGNED16_TO_16 (&Temp16, Buffer);
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BytesConsumed = Temp16 + 3;
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/*
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* Resource Source Index and Resource Source are
|
|
* optional elements. Check the length of the
|
|
* Bytestream. If it is greater than 13, that
|
|
* means that an Index exists and is followed by
|
|
* a null termininated string. Therefore, set
|
|
* the temp variable to the length minus the minimum
|
|
* byte stream length plus the byte for the Index to
|
|
* determine the size of the NULL terminiated string.
|
|
*/
|
|
if (13 < Temp16)
|
|
{
|
|
Temp8 = (UINT8) (Temp16 - 14);
|
|
}
|
|
else
|
|
{
|
|
Temp8 = 0;
|
|
}
|
|
|
|
/*
|
|
* Ensure a 32-bit boundary for the structure
|
|
*/
|
|
Temp8 = (UINT8) ACPI_ROUND_UP_TO_32BITS (Temp8);
|
|
|
|
StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_ADDRESS16) +
|
|
(Temp8 * sizeof (UINT8));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_EXTENDED_XRUPT:
|
|
/*
|
|
* Extended IRQ
|
|
*/
|
|
Buffer = ByteStreamBuffer;
|
|
|
|
++Buffer;
|
|
ACPI_MOVE_UNALIGNED16_TO_16 (&Temp16, Buffer);
|
|
|
|
BytesConsumed = Temp16 + 3;
|
|
|
|
/*
|
|
* Point past the length field and the
|
|
* Interrupt vector flags to save off the
|
|
* Interrupt table length to the Temp8 variable.
|
|
*/
|
|
Buffer += 3;
|
|
Temp8 = *Buffer;
|
|
|
|
/*
|
|
* To compensate for multiple interrupt numbers, add 4 bytes for
|
|
* each additional interrupts greater than 1
|
|
*/
|
|
AdditionalBytes = (UINT8) ((Temp8 - 1) * 4);
|
|
|
|
/*
|
|
* Resource Source Index and Resource Source are
|
|
* optional elements. Check the length of the
|
|
* Bytestream. If it is greater than 9, that
|
|
* means that an Index exists and is followed by
|
|
* a null termininated string. Therefore, set
|
|
* the temp variable to the length minus the minimum
|
|
* byte stream length plus the byte for the Index to
|
|
* determine the size of the NULL terminiated string.
|
|
*/
|
|
if (9 + AdditionalBytes < Temp16)
|
|
{
|
|
Temp8 = (UINT8) (Temp16 - (9 + AdditionalBytes));
|
|
}
|
|
else
|
|
{
|
|
Temp8 = 0;
|
|
}
|
|
|
|
/*
|
|
* Ensure a 32-bit boundary for the structure
|
|
*/
|
|
Temp8 = (UINT8) ACPI_ROUND_UP_TO_32BITS (Temp8);
|
|
|
|
StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_EXT_IRQ) +
|
|
(AdditionalBytes * sizeof (UINT8)) +
|
|
(Temp8 * sizeof (UINT8));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_IRQ_FORMAT:
|
|
/*
|
|
* IRQ Resource.
|
|
* Determine if it there are two or three trailing bytes
|
|
*/
|
|
Buffer = ByteStreamBuffer;
|
|
Temp8 = *Buffer;
|
|
|
|
if(Temp8 & 0x01)
|
|
{
|
|
BytesConsumed = 4;
|
|
}
|
|
else
|
|
{
|
|
BytesConsumed = 3;
|
|
}
|
|
|
|
/*
|
|
* Point past the descriptor
|
|
*/
|
|
++Buffer;
|
|
|
|
/*
|
|
* Look at the number of bits set
|
|
*/
|
|
ACPI_MOVE_UNALIGNED16_TO_16 (&Temp16, Buffer);
|
|
|
|
for (Index = 0; Index < 16; Index++)
|
|
{
|
|
if (Temp16 & 0x1)
|
|
{
|
|
++NumberOfInterrupts;
|
|
}
|
|
|
|
Temp16 >>= 1;
|
|
}
|
|
|
|
StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_IO) +
|
|
(NumberOfInterrupts * sizeof (UINT32));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_DMA_FORMAT:
|
|
/*
|
|
* DMA Resource
|
|
*/
|
|
Buffer = ByteStreamBuffer;
|
|
BytesConsumed = 3;
|
|
|
|
/*
|
|
* Point past the descriptor
|
|
*/
|
|
++Buffer;
|
|
|
|
/*
|
|
* Look at the number of bits set
|
|
*/
|
|
Temp8 = *Buffer;
|
|
|
|
for(Index = 0; Index < 8; Index++)
|
|
{
|
|
if(Temp8 & 0x1)
|
|
{
|
|
++NumberOfChannels;
|
|
}
|
|
|
|
Temp8 >>= 1;
|
|
}
|
|
|
|
StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_DMA) +
|
|
(NumberOfChannels * sizeof (UINT32));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_START_DEPENDENT:
|
|
/*
|
|
* Start Dependent Functions Resource
|
|
* Determine if it there are two or three trailing bytes
|
|
*/
|
|
Buffer = ByteStreamBuffer;
|
|
Temp8 = *Buffer;
|
|
|
|
if(Temp8 & 0x01)
|
|
{
|
|
BytesConsumed = 2;
|
|
}
|
|
else
|
|
{
|
|
BytesConsumed = 1;
|
|
}
|
|
|
|
StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_START_DPF);
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_END_DEPENDENT:
|
|
/*
|
|
* End Dependent Functions Resource
|
|
*/
|
|
BytesConsumed = 1;
|
|
StructureSize = ACPI_RESOURCE_LENGTH;
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_IO_PORT:
|
|
/*
|
|
* IO Port Resource
|
|
*/
|
|
BytesConsumed = 8;
|
|
StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_IO);
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_FIXED_IO_PORT:
|
|
/*
|
|
* Fixed IO Port Resource
|
|
*/
|
|
BytesConsumed = 4;
|
|
StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_FIXED_IO);
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_SMALL_VENDOR:
|
|
/*
|
|
* Vendor Specific Resource
|
|
*/
|
|
Buffer = ByteStreamBuffer;
|
|
|
|
Temp8 = *Buffer;
|
|
Temp8 = (UINT8) (Temp8 & 0x7);
|
|
BytesConsumed = Temp8 + 1;
|
|
|
|
/*
|
|
* Ensure a 32-bit boundary for the structure
|
|
*/
|
|
Temp8 = (UINT8) ACPI_ROUND_UP_TO_32BITS (Temp8);
|
|
StructureSize = ACPI_SIZEOF_RESOURCE (ACPI_RESOURCE_VENDOR) +
|
|
(Temp8 * sizeof (UINT8));
|
|
break;
|
|
|
|
|
|
case ACPI_RDESC_TYPE_END_TAG:
|
|
/*
|
|
* End Tag
|
|
*/
|
|
BytesConsumed = 2;
|
|
StructureSize = ACPI_RESOURCE_LENGTH;
|
|
ByteStreamBufferLength = BytesParsed;
|
|
break;
|
|
|
|
|
|
default:
|
|
/*
|
|
* If we get here, everything is out of sync,
|
|
* so exit with an error
|
|
*/
|
|
return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
|
|
}
|
|
|
|
/*
|
|
* Update the return value and counter
|
|
*/
|
|
BufferSize += ACPI_ALIGN_RESOURCE_SIZE(StructureSize);
|
|
BytesParsed += BytesConsumed;
|
|
|
|
/*
|
|
* Set the byte stream to point to the next resource
|
|
*/
|
|
ByteStreamBuffer += BytesConsumed;
|
|
}
|
|
|
|
/*
|
|
* This is the data the caller needs
|
|
*/
|
|
*SizeNeeded = BufferSize;
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiRsCalculatePciRoutingTableLength
|
|
*
|
|
* PARAMETERS: PackageObject - Pointer to the package object
|
|
* BufferSizeNeeded - UINT32 pointer of the size buffer
|
|
* needed to properly return the
|
|
* parsed data
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Given a package representing a PCI routing table, this
|
|
* calculates the size of the corresponding linked list of
|
|
* descriptions.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRsCalculatePciRoutingTableLength (
|
|
ACPI_OPERAND_OBJECT *PackageObject,
|
|
ACPI_SIZE *BufferSizeNeeded)
|
|
{
|
|
UINT32 NumberOfElements;
|
|
UINT32 TempSizeNeeded = 0;
|
|
ACPI_OPERAND_OBJECT **TopObjectList;
|
|
UINT32 Index;
|
|
ACPI_OPERAND_OBJECT *PackageElement;
|
|
ACPI_OPERAND_OBJECT **SubObjectList;
|
|
BOOLEAN NameFound;
|
|
UINT32 TableIndex;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("RsCalculatePciRoutingTableLength");
|
|
|
|
|
|
NumberOfElements = PackageObject->Package.Count;
|
|
|
|
/*
|
|
* Calculate the size of the return buffer.
|
|
* The base size is the number of elements * the sizes of the
|
|
* structures. Additional space for the strings is added below.
|
|
* The minus one is to subtract the size of the UINT8 Source[1]
|
|
* member because it is added below.
|
|
*
|
|
* But each PRT_ENTRY structure has a pointer to a string and
|
|
* the size of that string must be found.
|
|
*/
|
|
TopObjectList = PackageObject->Package.Elements;
|
|
|
|
for (Index = 0; Index < NumberOfElements; Index++)
|
|
{
|
|
/*
|
|
* Dereference the sub-package
|
|
*/
|
|
PackageElement = *TopObjectList;
|
|
|
|
/*
|
|
* The SubObjectList will now point to an array of the
|
|
* four IRQ elements: Address, Pin, Source and SourceIndex
|
|
*/
|
|
SubObjectList = PackageElement->Package.Elements;
|
|
|
|
/*
|
|
* Scan the IrqTableElements for the Source Name String
|
|
*/
|
|
NameFound = FALSE;
|
|
|
|
for (TableIndex = 0; TableIndex < 4 && !NameFound; TableIndex++)
|
|
{
|
|
if ((ACPI_TYPE_STRING == (*SubObjectList)->Common.Type) ||
|
|
((INTERNAL_TYPE_REFERENCE == (*SubObjectList)->Common.Type) &&
|
|
((*SubObjectList)->Reference.Opcode == AML_INT_NAMEPATH_OP)))
|
|
{
|
|
NameFound = TRUE;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Look at the next element
|
|
*/
|
|
SubObjectList++;
|
|
}
|
|
}
|
|
|
|
TempSizeNeeded += (sizeof (ACPI_PCI_ROUTING_TABLE) - 4);
|
|
|
|
/*
|
|
* Was a String type found?
|
|
*/
|
|
if (TRUE == NameFound)
|
|
{
|
|
if (ACPI_TYPE_STRING == (*SubObjectList)->Common.Type)
|
|
{
|
|
/*
|
|
* The length String.Length field includes the
|
|
* terminating NULL
|
|
*/
|
|
TempSizeNeeded += (*SubObjectList)->String.Length;
|
|
}
|
|
else
|
|
{
|
|
TempSizeNeeded += AcpiNsGetPathnameLength (
|
|
(*SubObjectList)->Reference.Node);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* If no name was found, then this is a NULL, which is
|
|
* translated as a UINT32 zero.
|
|
*/
|
|
TempSizeNeeded += sizeof (UINT32);
|
|
}
|
|
|
|
/* Round up the size since each element must be aligned */
|
|
|
|
TempSizeNeeded = ACPI_ROUND_UP_TO_64BITS (TempSizeNeeded);
|
|
|
|
/*
|
|
* Point to the next ACPI_OPERAND_OBJECT
|
|
*/
|
|
TopObjectList++;
|
|
}
|
|
|
|
/*
|
|
* Adding an extra element to the end of the list, essentially a NULL terminator
|
|
*/
|
|
*BufferSizeNeeded = TempSizeNeeded + sizeof (ACPI_PCI_ROUTING_TABLE);
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|