500 lines
18 KiB
C
500 lines
18 KiB
C
/*******************************************************************************
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*
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* Module Name: rsxface - Public interfaces to the resource manager
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* $Revision: 27 $
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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 - 2003, 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 __RSXFACE_C__
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#include "acpi.h"
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#include "acresrc.h"
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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME ("rsxface")
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/*******************************************************************************
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*
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* FUNCTION: AcpiGetIrqRoutingTable
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*
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* PARAMETERS: DeviceHandle - a handle to the Bus device we are querying
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* RetBuffer - a pointer to a buffer to receive the
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* current resources for the device
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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 IRQ routing table for a
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* specific bus. The caller must first acquire a handle for the
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* desired bus. The routine table is placed in the buffer pointed
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* to by the RetBuffer variable parameter.
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*
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* If the function fails an appropriate status will be returned
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* and the value of RetBuffer is undefined.
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*
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* This function attempts to execute the _PRT method contained in
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* the object indicated by the passed DeviceHandle.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetIrqRoutingTable (
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ACPI_HANDLE DeviceHandle,
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ACPI_BUFFER *RetBuffer)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE ("AcpiGetIrqRoutingTable ");
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/*
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* Must have a valid handle and buffer, So we have to have a handle
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* and a return buffer structure, and if there is a non-zero buffer length
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* we also need a valid pointer in the buffer. If it's a zero buffer length,
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* we'll be returning the needed buffer size, so keep going.
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*/
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if (!DeviceHandle)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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Status = AcpiUtValidateBuffer (RetBuffer);
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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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Status = AcpiRsGetPrtMethodData (DeviceHandle, RetBuffer);
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiGetCurrentResources
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*
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* PARAMETERS: DeviceHandle - a handle to the device object for the
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* device we are querying
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* RetBuffer - a pointer to a buffer to receive the
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* current resources for the device
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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 current resources for a
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* specific device. The caller must first acquire a handle for
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* the desired device. The resource data is placed in the buffer
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* pointed to by the RetBuffer variable parameter.
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*
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* If the function fails an appropriate status will be returned
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* and the value of RetBuffer is undefined.
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*
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* This function attempts to execute the _CRS method contained in
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* the object indicated by the passed DeviceHandle.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetCurrentResources (
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ACPI_HANDLE DeviceHandle,
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ACPI_BUFFER *RetBuffer)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE ("AcpiGetCurrentResources");
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/*
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* Must have a valid handle and buffer, So we have to have a handle
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* and a return buffer structure, and if there is a non-zero buffer length
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* we also need a valid pointer in the buffer. If it's a zero buffer length,
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* we'll be returning the needed buffer size, so keep going.
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*/
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if (!DeviceHandle)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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Status = AcpiUtValidateBuffer (RetBuffer);
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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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Status = AcpiRsGetCrsMethodData (DeviceHandle, RetBuffer);
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiGetPossibleResources
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*
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* PARAMETERS: DeviceHandle - a handle to the device object for the
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* device we are querying
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* RetBuffer - a pointer to a buffer to receive the
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* resources for the device
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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 a list of the possible resources
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* for a specific device. The caller must first acquire a handle
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* for the desired device. The resource data is placed in the
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* buffer pointed to by the RetBuffer variable.
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*
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* If the function fails an appropriate status will be returned
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* and the value of RetBuffer is undefined.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiGetPossibleResources (
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ACPI_HANDLE DeviceHandle,
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ACPI_BUFFER *RetBuffer)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE ("AcpiGetPossibleResources");
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/*
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* Must have a valid handle and buffer, So we have to have a handle
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* and a return buffer structure, and if there is a non-zero buffer length
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* we also need a valid pointer in the buffer. If it's a zero buffer length,
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* we'll be returning the needed buffer size, so keep going.
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*/
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if (!DeviceHandle)
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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Status = AcpiUtValidateBuffer (RetBuffer);
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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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Status = AcpiRsGetPrsMethodData (DeviceHandle, RetBuffer);
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiWalkResources
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*
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* PARAMETERS: DeviceHandle - a handle to the device object for the
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* device we are querying
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* Path - method name of the resources we want
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* (METHOD_NAME__CRS or METHOD_NAME__PRS)
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* UserFunction - called for each resource
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* Context - passed to UserFunction
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*
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* RETURN: Status
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*
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* DESCRIPTION: Retrieves the current or possible resource list for the
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* specified device. The UserFunction is called once for
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* each resource in the list.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiWalkResources (
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ACPI_HANDLE DeviceHandle,
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char *Path,
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ACPI_WALK_RESOURCE_CALLBACK UserFunction,
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void *Context)
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{
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ACPI_STATUS Status;
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ACPI_BUFFER Buffer = {ACPI_ALLOCATE_BUFFER, NULL};
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ACPI_RESOURCE *Resource;
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ACPI_FUNCTION_TRACE ("AcpiWalkResources");
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if (!DeviceHandle ||
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(ACPI_STRNCMP (Path, METHOD_NAME__CRS, sizeof (METHOD_NAME__CRS)) &&
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ACPI_STRNCMP (Path, METHOD_NAME__PRS, sizeof (METHOD_NAME__PRS))))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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Status = AcpiRsGetMethodData (DeviceHandle, Path, &Buffer);
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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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Resource = (ACPI_RESOURCE *) Buffer.Pointer;
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for (;;)
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{
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if (!Resource || Resource->Id == ACPI_RSTYPE_END_TAG)
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{
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break;
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}
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Status = UserFunction (Resource, Context);
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switch (Status)
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{
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case AE_OK:
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case AE_CTRL_DEPTH:
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/* Just keep going */
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Status = AE_OK;
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break;
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case AE_CTRL_TERMINATE:
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/* Exit now, with OK stats */
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Status = AE_OK;
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goto Cleanup;
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default:
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/* All others are valid exceptions */
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goto Cleanup;
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}
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Resource = ACPI_NEXT_RESOURCE (Resource);
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}
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Cleanup:
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AcpiOsFree (Buffer.Pointer);
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiSetCurrentResources
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*
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* PARAMETERS: DeviceHandle - a handle to the device object for the
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* device we are changing the resources of
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* InBuffer - a pointer to a buffer containing the
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* resources to be set for the device
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to set the current resources for a
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* specific device. The caller must first acquire a handle for
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* the desired device. The resource data is passed to the routine
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* the buffer pointed to by the InBuffer variable.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiSetCurrentResources (
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ACPI_HANDLE DeviceHandle,
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ACPI_BUFFER *InBuffer)
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{
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ACPI_STATUS Status;
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ACPI_FUNCTION_TRACE ("AcpiSetCurrentResources");
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/*
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* Must have a valid handle and buffer
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*/
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if ((!DeviceHandle) ||
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(!InBuffer) ||
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(!InBuffer->Pointer) ||
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(!InBuffer->Length))
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{
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return_ACPI_STATUS (AE_BAD_PARAMETER);
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}
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Status = AcpiRsSetSrsMethodData (DeviceHandle, InBuffer);
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return_ACPI_STATUS (Status);
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}
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#define ACPI_COPY_FIELD(Out, In, Field) ((Out)->Field = (In)->Field)
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#define ACPI_COPY_ADDRESS(Out, In) \
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ACPI_COPY_FIELD(Out, In, ResourceType); \
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ACPI_COPY_FIELD(Out, In, ProducerConsumer); \
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ACPI_COPY_FIELD(Out, In, Decode); \
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ACPI_COPY_FIELD(Out, In, MinAddressFixed); \
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ACPI_COPY_FIELD(Out, In, MaxAddressFixed); \
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ACPI_COPY_FIELD(Out, In, Attribute); \
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ACPI_COPY_FIELD(Out, In, Granularity); \
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ACPI_COPY_FIELD(Out, In, MinAddressRange); \
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ACPI_COPY_FIELD(Out, In, MaxAddressRange); \
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ACPI_COPY_FIELD(Out, In, AddressTranslationOffset); \
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ACPI_COPY_FIELD(Out, In, AddressLength); \
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ACPI_COPY_FIELD(Out, In, ResourceSource);
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/******************************************************************************
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*
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* FUNCTION: AcpiResourceToAddress64
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*
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* PARAMETERS: resource - Pointer to a resource
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* out - Pointer to the users's return
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* buffer (a struct
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* acpi_resource_address64)
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*
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* RETURN: Status
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*
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* DESCRIPTION: If the resource is an address16, address32, or address64,
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* copy it to the address64 return buffer. This saves the
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* caller from having to duplicate code for different-sized
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* addresses.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiResourceToAddress64 (
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ACPI_RESOURCE *Resource,
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ACPI_RESOURCE_ADDRESS64 *Out)
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{
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ACPI_RESOURCE_ADDRESS16 *Address16;
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ACPI_RESOURCE_ADDRESS32 *Address32;
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switch (Resource->Id) {
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case ACPI_RSTYPE_ADDRESS16:
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Address16 = (ACPI_RESOURCE_ADDRESS16 *) &Resource->Data;
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ACPI_COPY_ADDRESS(Out, Address16);
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break;
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case ACPI_RSTYPE_ADDRESS32:
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Address32 = (ACPI_RESOURCE_ADDRESS32 *) &Resource->Data;
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ACPI_COPY_ADDRESS(Out, Address32);
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break;
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case ACPI_RSTYPE_ADDRESS64:
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/* Simple copy for 64 bit source */
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ACPI_MEMCPY (Out, &Resource->Data, sizeof (ACPI_RESOURCE_ADDRESS64));
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break;
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default:
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return (AE_BAD_PARAMETER);
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}
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return (AE_OK);
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}
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