- 99% of the code is Intel's ACPICA. The license is compliant with BSD and GNU and virtually all systems that use ACPI use this code, For instance it is part of the Linux kernel. - The only minix specific files are acpi.c osminixxf.c platform/acminix.h and include/minix/acpi.h - At the moment the driver does not register interrupt hooks which I believe is mainly for handling PnP, events like "battery level is low" and power management. Should not be difficult to add it if need be. - The interface to the outside world is virtually non-existent except a trivial message based service for PCI driver to query which device is connected to what IRQ line. This will evolve as more components start using this driver. VM, Scheduler and IOMMU are the possible users right now. - because of dependency on a native 64bit (long long, part of c99) it is compiled only with a gnu-like compilers which in case of Minix includes gcc llvm-gcc and clang
533 lines
20 KiB
C
533 lines
20 KiB
C
/*******************************************************************************
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*
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* Module Name: rscreate - Create resource lists/tables
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*
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******************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __RSCREATE_C__
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#include "acpi.h"
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#include "accommon.h"
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#include "acresrc.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME ("rscreate")
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/*******************************************************************************
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*
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* FUNCTION: AcpiRsCreateResourceList
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*
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* PARAMETERS: AmlBuffer - Pointer to the resource byte stream
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* OutputBuffer - Pointer to the user's buffer
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*
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* RETURN: Status: AE_OK if okay, else a valid ACPI_STATUS code
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* If OutputBuffer is not large enough, OutputBufferLength
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* indicates how large OutputBuffer should be, else it
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* indicates how may UINT8 elements of OutputBuffer are valid.
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*
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* DESCRIPTION: Takes the byte stream returned from a _CRS, _PRS control method
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* execution and parses the stream to create a linked list
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* of device resources.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiRsCreateResourceList (
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ACPI_OPERAND_OBJECT *AmlBuffer,
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ACPI_BUFFER *OutputBuffer)
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{
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ACPI_STATUS Status;
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UINT8 *AmlStart;
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ACPI_SIZE ListSizeNeeded = 0;
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UINT32 AmlBufferLength;
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void *Resource;
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ACPI_FUNCTION_TRACE (RsCreateResourceList);
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "AmlBuffer = %p\n",
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AmlBuffer));
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/* Params already validated, so we don't re-validate here */
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AmlBufferLength = AmlBuffer->Buffer.Length;
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AmlStart = AmlBuffer->Buffer.Pointer;
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/*
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* Pass the AmlBuffer into a module that can calculate
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* the buffer size needed for the linked list
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*/
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Status = AcpiRsGetListLength (AmlStart, AmlBufferLength,
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&ListSizeNeeded);
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Status=%X ListSizeNeeded=%X\n",
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Status, (UINT32) ListSizeNeeded));
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Validate/Allocate/Clear caller buffer */
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Status = AcpiUtInitializeBuffer (OutputBuffer, ListSizeNeeded);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/* Do the conversion */
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Resource = OutputBuffer->Pointer;
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Status = AcpiUtWalkAmlResources (AmlStart, AmlBufferLength,
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AcpiRsConvertAmlToResources, &Resource);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "OutputBuffer %p Length %X\n",
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OutputBuffer->Pointer, (UINT32) OutputBuffer->Length));
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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: AcpiRsCreatePciRoutingTable
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*
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* PARAMETERS: PackageObject - Pointer to an ACPI_OPERAND_OBJECT
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* package
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* OutputBuffer - Pointer to the user's buffer
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*
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* RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code.
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* If the OutputBuffer is too small, the error will be
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* AE_BUFFER_OVERFLOW and OutputBuffer->Length will point
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* to the size buffer needed.
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*
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* DESCRIPTION: Takes the ACPI_OPERAND_OBJECT package and creates a
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* linked list of PCI interrupt descriptions
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*
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* NOTE: It is the caller's responsibility to ensure that the start of the
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* output buffer is aligned properly (if necessary).
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiRsCreatePciRoutingTable (
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ACPI_OPERAND_OBJECT *PackageObject,
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ACPI_BUFFER *OutputBuffer)
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{
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UINT8 *Buffer;
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ACPI_OPERAND_OBJECT **TopObjectList;
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ACPI_OPERAND_OBJECT **SubObjectList;
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ACPI_OPERAND_OBJECT *ObjDesc;
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ACPI_SIZE BufferSizeNeeded = 0;
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UINT32 NumberOfElements;
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UINT32 Index;
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ACPI_PCI_ROUTING_TABLE *UserPrt;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_STATUS Status;
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ACPI_BUFFER PathBuffer;
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ACPI_FUNCTION_TRACE (RsCreatePciRoutingTable);
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/* Params already validated, so we don't re-validate here */
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/* Get the required buffer length */
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Status = AcpiRsGetPciRoutingTableLength (PackageObject,
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&BufferSizeNeeded);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "BufferSizeNeeded = %X\n",
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(UINT32) BufferSizeNeeded));
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/* Validate/Allocate/Clear caller buffer */
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Status = AcpiUtInitializeBuffer (OutputBuffer, BufferSizeNeeded);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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/*
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* Loop through the ACPI_INTERNAL_OBJECTS - Each object should be a
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* package that in turn contains an UINT64 Address, a UINT8 Pin,
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* a Name, and a UINT8 SourceIndex.
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*/
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TopObjectList = PackageObject->Package.Elements;
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NumberOfElements = PackageObject->Package.Count;
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Buffer = OutputBuffer->Pointer;
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UserPrt = ACPI_CAST_PTR (ACPI_PCI_ROUTING_TABLE, Buffer);
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for (Index = 0; Index < NumberOfElements; Index++)
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{
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/*
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* Point UserPrt past this current structure
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*
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* NOTE: On the first iteration, UserPrt->Length will
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* be zero because we cleared the return buffer earlier
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*/
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Buffer += UserPrt->Length;
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UserPrt = ACPI_CAST_PTR (ACPI_PCI_ROUTING_TABLE, Buffer);
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/*
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* Fill in the Length field with the information we have at this point.
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* The minus four is to subtract the size of the UINT8 Source[4] member
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* because it is added below.
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*/
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UserPrt->Length = (sizeof (ACPI_PCI_ROUTING_TABLE) - 4);
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/* Each element of the top-level package must also be a package */
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if ((*TopObjectList)->Common.Type != ACPI_TYPE_PACKAGE)
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{
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ACPI_ERROR ((AE_INFO,
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"(PRT[%u]) Need sub-package, found %s",
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Index, AcpiUtGetObjectTypeName (*TopObjectList)));
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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/* Each sub-package must be of length 4 */
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if ((*TopObjectList)->Package.Count != 4)
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{
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ACPI_ERROR ((AE_INFO,
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"(PRT[%u]) Need package of length 4, found length %u",
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Index, (*TopObjectList)->Package.Count));
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return_ACPI_STATUS (AE_AML_PACKAGE_LIMIT);
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}
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/*
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* Dereference the sub-package.
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* The SubObjectList will now point to an array of the four IRQ
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* elements: [Address, Pin, Source, SourceIndex]
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*/
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SubObjectList = (*TopObjectList)->Package.Elements;
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/* 1) First subobject: Dereference the PRT.Address */
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ObjDesc = SubObjectList[0];
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if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER)
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{
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ACPI_ERROR ((AE_INFO, "(PRT[%u].Address) Need Integer, found %s",
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Index, AcpiUtGetObjectTypeName (ObjDesc)));
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return_ACPI_STATUS (AE_BAD_DATA);
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}
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UserPrt->Address = ObjDesc->Integer.Value;
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/* 2) Second subobject: Dereference the PRT.Pin */
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ObjDesc = SubObjectList[1];
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if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER)
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{
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ACPI_ERROR ((AE_INFO, "(PRT[%u].Pin) Need Integer, found %s",
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Index, AcpiUtGetObjectTypeName (ObjDesc)));
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return_ACPI_STATUS (AE_BAD_DATA);
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}
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UserPrt->Pin = (UINT32) ObjDesc->Integer.Value;
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/*
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* If the BIOS has erroneously reversed the _PRT SourceName (index 2)
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* and the SourceIndex (index 3), fix it. _PRT is important enough to
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* workaround this BIOS error. This also provides compatibility with
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* other ACPI implementations.
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*/
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ObjDesc = SubObjectList[3];
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if (!ObjDesc || (ObjDesc->Common.Type != ACPI_TYPE_INTEGER))
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{
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SubObjectList[3] = SubObjectList[2];
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SubObjectList[2] = ObjDesc;
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ACPI_WARNING ((AE_INFO,
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"(PRT[%X].Source) SourceName and SourceIndex are reversed, fixed",
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Index));
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}
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/*
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* 3) Third subobject: Dereference the PRT.SourceName
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* The name may be unresolved (slack mode), so allow a null object
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*/
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ObjDesc = SubObjectList[2];
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if (ObjDesc)
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{
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switch (ObjDesc->Common.Type)
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{
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case ACPI_TYPE_LOCAL_REFERENCE:
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if (ObjDesc->Reference.Class != ACPI_REFCLASS_NAME)
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{
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ACPI_ERROR ((AE_INFO,
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"(PRT[%u].Source) Need name, found Reference Class 0x%X",
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Index, ObjDesc->Reference.Class));
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return_ACPI_STATUS (AE_BAD_DATA);
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}
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Node = ObjDesc->Reference.Node;
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/* Use *remaining* length of the buffer as max for pathname */
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PathBuffer.Length = OutputBuffer->Length -
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(UINT32) ((UINT8 *) UserPrt->Source -
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(UINT8 *) OutputBuffer->Pointer);
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PathBuffer.Pointer = UserPrt->Source;
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Status = AcpiNsHandleToPathname ((ACPI_HANDLE) Node, &PathBuffer);
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/* +1 to include null terminator */
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UserPrt->Length += (UINT32) ACPI_STRLEN (UserPrt->Source) + 1;
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break;
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case ACPI_TYPE_STRING:
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ACPI_STRCPY (UserPrt->Source, ObjDesc->String.Pointer);
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/*
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* Add to the Length field the length of the string
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* (add 1 for terminator)
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*/
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UserPrt->Length += ObjDesc->String.Length + 1;
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break;
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case ACPI_TYPE_INTEGER:
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/*
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* If this is a number, then the Source Name is NULL, since the
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* entire buffer was zeroed out, we can leave this alone.
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*
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* Add to the Length field the length of the UINT32 NULL
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*/
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UserPrt->Length += sizeof (UINT32);
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break;
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default:
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ACPI_ERROR ((AE_INFO,
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"(PRT[%u].Source) Need Ref/String/Integer, found %s",
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Index, AcpiUtGetObjectTypeName (ObjDesc)));
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return_ACPI_STATUS (AE_BAD_DATA);
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}
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}
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/* Now align the current length */
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UserPrt->Length = (UINT32) ACPI_ROUND_UP_TO_64BIT (UserPrt->Length);
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/* 4) Fourth subobject: Dereference the PRT.SourceIndex */
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ObjDesc = SubObjectList[3];
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if (ObjDesc->Common.Type != ACPI_TYPE_INTEGER)
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{
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ACPI_ERROR ((AE_INFO,
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"(PRT[%u].SourceIndex) Need Integer, found %s",
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Index, AcpiUtGetObjectTypeName (ObjDesc)));
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return_ACPI_STATUS (AE_BAD_DATA);
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}
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UserPrt->SourceIndex = (UINT32) ObjDesc->Integer.Value;
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/* Point to the next ACPI_OPERAND_OBJECT in the top level package */
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TopObjectList++;
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}
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "OutputBuffer %p Length %X\n",
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OutputBuffer->Pointer, (UINT32) OutputBuffer->Length));
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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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*
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* FUNCTION: AcpiRsCreateAmlResources
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*
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* PARAMETERS: LinkedListBuffer - Pointer to the resource linked list
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* OutputBuffer - Pointer to the user's buffer
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*
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* RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code.
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* If the OutputBuffer is too small, the error will be
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* AE_BUFFER_OVERFLOW and OutputBuffer->Length will point
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* to the size buffer needed.
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*
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* DESCRIPTION: Takes the linked list of device resources and
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* creates a bytestream to be used as input for the
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* _SRS control method.
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*
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|
******************************************************************************/
|
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|
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ACPI_STATUS
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AcpiRsCreateAmlResources (
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ACPI_RESOURCE *LinkedListBuffer,
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ACPI_BUFFER *OutputBuffer)
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|
{
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ACPI_STATUS Status;
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ACPI_SIZE AmlSizeNeeded = 0;
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|
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ACPI_FUNCTION_TRACE (RsCreateAmlResources);
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|
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ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "LinkedListBuffer = %p\n",
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LinkedListBuffer));
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/*
|
|
* Params already validated, so we don't re-validate here
|
|
*
|
|
* Pass the LinkedListBuffer into a module that calculates
|
|
* the buffer size needed for the byte stream.
|
|
*/
|
|
Status = AcpiRsGetAmlLength (LinkedListBuffer,
|
|
&AmlSizeNeeded);
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "AmlSizeNeeded=%X, %s\n",
|
|
(UINT32) AmlSizeNeeded, AcpiFormatException (Status)));
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Validate/Allocate/Clear caller buffer */
|
|
|
|
Status = AcpiUtInitializeBuffer (OutputBuffer, AmlSizeNeeded);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Do the conversion */
|
|
|
|
Status = AcpiRsConvertResourcesToAml (LinkedListBuffer, AmlSizeNeeded,
|
|
OutputBuffer->Pointer);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "OutputBuffer %p Length %X\n",
|
|
OutputBuffer->Pointer, (UINT32) OutputBuffer->Length));
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|