NetBSD-5.0.2/sys/dist/acpica/rslist.c
/*******************************************************************************
*
* Module Name: rslist - Linked list utilities
* $Revision: 1.4 $
*
******************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2008, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
* rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
* copy of the source code appearing in this file ("Covered Code") an
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
* base code distributed originally by Intel ("Original Intel Code") to copy,
* make derivatives, distribute, use and display any portion of the Covered
* Code in any form, with the right to sublicense such rights; and
*
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
* license (with the right to sublicense), under only those claims of Intel
* patents that are infringed by the Original Intel Code, to make, use, sell,
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
* to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
*
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
* and the following Disclaimer and Export Compliance provision. In addition,
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
* Code and the date of any change. Licensee must include in that file the
* documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
* documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* property embodied in the software Licensee provides to its licensee, and
* not to intellectual property embodied in modifications its licensee may
* make.
*
* 3.3. Redistribution of Executable. Redistribution in executable form of any
* substantial portion of the Covered Code or modification must reproduce the
* above Copyright Notice, and the following Disclaimer and Export Compliance
* provision in the documentation and/or other materials provided with the
* distribution.
*
* 3.4. Intel retains all right, title, and interest in and to the Original
* Intel Code.
*
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
* Intel shall be used in advertising or otherwise to promote the sale, use or
* other dealings in products derived from or relating to the Covered Code
* without prior written authorization from Intel.
*
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
* any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* any of its subsidiaries will export/re-export any technical data, process,
* software, or service, directly or indirectly, to any country for which the
* United States government or any agency thereof requires an export license,
* other governmental approval, or letter of assurance, without first obtaining
* such license, approval or letter.
*
*****************************************************************************/
#define __RSLIST_C__
#include "acpi.h"
#include "acresrc.h"
#define _COMPONENT ACPI_RESOURCES
ACPI_MODULE_NAME ("rslist")
/*******************************************************************************
*
* FUNCTION: AcpiRsConvertAmlToResources
*
* PARAMETERS: ACPI_WALK_AML_CALLBACK
* ResourcePtr - Pointer to the buffer that will
* contain the output structures
*
* RETURN: Status
*
* DESCRIPTION: Convert an AML resource to an internal representation of the
* resource that is aligned and easier to access.
*
******************************************************************************/
ACPI_STATUS
AcpiRsConvertAmlToResources (
UINT8 *Aml,
UINT32 Length,
UINT32 Offset,
UINT8 ResourceIndex,
void *Context)
{
ACPI_RESOURCE **ResourcePtr = ACPI_CAST_INDIRECT_PTR (
ACPI_RESOURCE, Context);
ACPI_RESOURCE *Resource;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (RsConvertAmlToResources);
/*
* Check that the input buffer and all subsequent pointers into it
* are aligned on a native word boundary. Most important on IA64
*/
Resource = *ResourcePtr;
if (ACPI_IS_MISALIGNED (Resource))
{
ACPI_WARNING ((AE_INFO,
"Misaligned resource pointer %p", Resource));
}
/* Convert the AML byte stream resource to a local resource struct */
Status = AcpiRsConvertAmlToResource (
Resource, ACPI_CAST_PTR (AML_RESOURCE, Aml),
AcpiGbl_GetResourceDispatch[ResourceIndex]);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status,
"Could not convert AML resource (Type %X)", *Aml));
return_ACPI_STATUS (Status);
}
ACPI_DEBUG_PRINT ((ACPI_DB_RESOURCES,
"Type %.2X, AmlLength %.2X InternalLength %.2X\n",
AcpiUtGetResourceType (Aml), Length,
Resource->Length));
/* Point to the next structure in the output buffer */
*ResourcePtr = ACPI_ADD_PTR (void, Resource, Resource->Length);
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiRsConvertResourcesToAml
*
* PARAMETERS: Resource - Pointer to the resource linked list
* AmlSizeNeeded - Calculated size of the byte stream
* needed from calling AcpiRsGetAmlLength()
* The size of the OutputBuffer is
* guaranteed to be >= AmlSizeNeeded
* OutputBuffer - Pointer to the buffer that will
* contain the byte stream
*
* RETURN: Status
*
* DESCRIPTION: Takes the resource linked list and parses it, creating a
* byte stream of resources in the caller's output buffer
*
******************************************************************************/
ACPI_STATUS
AcpiRsConvertResourcesToAml (
ACPI_RESOURCE *Resource,
ACPI_SIZE AmlSizeNeeded,
UINT8 *OutputBuffer)
{
UINT8 *Aml = OutputBuffer;
UINT8 *EndAml = OutputBuffer + AmlSizeNeeded;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (RsConvertResourcesToAml);
/* Walk the resource descriptor list, convert each descriptor */
while (Aml < EndAml)
{
/* Validate the (internal) Resource Type */
if (Resource->Type > ACPI_RESOURCE_TYPE_MAX)
{
ACPI_ERROR ((AE_INFO,
"Invalid descriptor type (%X) in resource list",
Resource->Type));
return_ACPI_STATUS (AE_BAD_DATA);
}
/* Perform the conversion */
Status = AcpiRsConvertResourceToAml (Resource,
ACPI_CAST_PTR (AML_RESOURCE, Aml),
AcpiGbl_SetResourceDispatch[Resource->Type]);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status,
"Could not convert resource (type %X) to AML",
Resource->Type));
return_ACPI_STATUS (Status);
}
/* Perform final sanity check on the new AML resource descriptor */
Status = AcpiUtValidateResource (
ACPI_CAST_PTR (AML_RESOURCE, Aml), NULL);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Check for end-of-list, normal exit */
if (Resource->Type == ACPI_RESOURCE_TYPE_END_TAG)
{
/* An End Tag indicates the end of the input Resource Template */
return_ACPI_STATUS (AE_OK);
}
/*
* Extract the total length of the new descriptor and set the
* Aml to point to the next (output) resource descriptor
*/
Aml += AcpiUtGetDescriptorLength (Aml);
/* Point to the next input resource descriptor */
Resource = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, Resource->Length);
}
/* Completed buffer, but did not find an EndTag resource descriptor */
return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
}