Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  1. /*******************************************************************************
  2.  *
  3.  * Module Name: rslist - Linked list utilities
  4.  *
  5.  ******************************************************************************/
  6.  
  7. /******************************************************************************
  8.  *
  9.  * 1. Copyright Notice
  10.  *
  11.  * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
  12.  * All rights reserved.
  13.  *
  14.  * 2. License
  15.  *
  16.  * 2.1. This is your license from Intel Corp. under its intellectual property
  17.  * rights.  You may have additional license terms from the party that provided
  18.  * you this software, covering your right to use that party's intellectual
  19.  * property rights.
  20.  *
  21.  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  22.  * copy of the source code appearing in this file ("Covered Code") an
  23.  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  24.  * base code distributed originally by Intel ("Original Intel Code") to copy,
  25.  * make derivatives, distribute, use and display any portion of the Covered
  26.  * Code in any form, with the right to sublicense such rights; and
  27.  *
  28.  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  29.  * license (with the right to sublicense), under only those claims of Intel
  30.  * patents that are infringed by the Original Intel Code, to make, use, sell,
  31.  * offer to sell, and import the Covered Code and derivative works thereof
  32.  * solely to the minimum extent necessary to exercise the above copyright
  33.  * license, and in no event shall the patent license extend to any additions
  34.  * to or modifications of the Original Intel Code.  No other license or right
  35.  * is granted directly or by implication, estoppel or otherwise;
  36.  *
  37.  * The above copyright and patent license is granted only if the following
  38.  * conditions are met:
  39.  *
  40.  * 3. Conditions
  41.  *
  42.  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  43.  * Redistribution of source code of any substantial portion of the Covered
  44.  * Code or modification with rights to further distribute source must include
  45.  * the above Copyright Notice, the above License, this list of Conditions,
  46.  * and the following Disclaimer and Export Compliance provision.  In addition,
  47.  * Licensee must cause all Covered Code to which Licensee contributes to
  48.  * contain a file documenting the changes Licensee made to create that Covered
  49.  * Code and the date of any change.  Licensee must include in that file the
  50.  * documentation of any changes made by any predecessor Licensee.  Licensee
  51.  * must include a prominent statement that the modification is derived,
  52.  * directly or indirectly, from Original Intel Code.
  53.  *
  54.  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  55.  * Redistribution of source code of any substantial portion of the Covered
  56.  * Code or modification without rights to further distribute source must
  57.  * include the following Disclaimer and Export Compliance provision in the
  58.  * documentation and/or other materials provided with distribution.  In
  59.  * addition, Licensee may not authorize further sublicense of source of any
  60.  * portion of the Covered Code, and must include terms to the effect that the
  61.  * license from Licensee to its licensee is limited to the intellectual
  62.  * property embodied in the software Licensee provides to its licensee, and
  63.  * not to intellectual property embodied in modifications its licensee may
  64.  * make.
  65.  *
  66.  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  67.  * substantial portion of the Covered Code or modification must reproduce the
  68.  * above Copyright Notice, and the following Disclaimer and Export Compliance
  69.  * provision in the documentation and/or other materials provided with the
  70.  * distribution.
  71.  *
  72.  * 3.4. Intel retains all right, title, and interest in and to the Original
  73.  * Intel Code.
  74.  *
  75.  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  76.  * Intel shall be used in advertising or otherwise to promote the sale, use or
  77.  * other dealings in products derived from or relating to the Covered Code
  78.  * without prior written authorization from Intel.
  79.  *
  80.  * 4. Disclaimer and Export Compliance
  81.  *
  82.  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  83.  * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  84.  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
  85.  * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
  86.  * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
  87.  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  88.  * PARTICULAR PURPOSE.
  89.  *
  90.  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  91.  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  92.  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  93.  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  94.  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  95.  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
  96.  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  97.  * LIMITED REMEDY.
  98.  *
  99.  * 4.3. Licensee shall not export, either directly or indirectly, any of this
  100.  * software or system incorporating such software without first obtaining any
  101.  * required license or other approval from the U. S. Department of Commerce or
  102.  * any other agency or department of the United States Government.  In the
  103.  * event Licensee exports any such software from the United States or
  104.  * re-exports any such software from a foreign destination, Licensee shall
  105.  * ensure that the distribution and export/re-export of the software is in
  106.  * compliance with all laws, regulations, orders, or other restrictions of the
  107.  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
  108.  * any of its subsidiaries will export/re-export any technical data, process,
  109.  * software, or service, directly or indirectly, to any country for which the
  110.  * United States government or any agency thereof requires an export license,
  111.  * other governmental approval, or letter of assurance, without first obtaining
  112.  * such license, approval or letter.
  113.  *
  114.  *****************************************************************************/
  115.  
  116. #define __RSLIST_C__
  117.  
  118. #include "acpi.h"
  119. #include "accommon.h"
  120. #include "acresrc.h"
  121.  
  122. #define _COMPONENT          ACPI_RESOURCES
  123.         ACPI_MODULE_NAME    ("rslist")
  124.  
  125.  
  126. /*******************************************************************************
  127.  *
  128.  * FUNCTION:    AcpiRsConvertAmlToResources
  129.  *
  130.  * PARAMETERS:  ACPI_WALK_AML_CALLBACK
  131.  *              ResourcePtr             - Pointer to the buffer that will
  132.  *                                        contain the output structures
  133.  *
  134.  * RETURN:      Status
  135.  *
  136.  * DESCRIPTION: Convert an AML resource to an internal representation of the
  137.  *              resource that is aligned and easier to access.
  138.  *
  139.  ******************************************************************************/
  140.  
  141. ACPI_STATUS
  142. AcpiRsConvertAmlToResources (
  143.     UINT8                   *Aml,
  144.     UINT32                  Length,
  145.     UINT32                  Offset,
  146.     UINT8                   ResourceIndex,
  147.     void                    *Context)
  148. {
  149.     ACPI_RESOURCE           **ResourcePtr = ACPI_CAST_INDIRECT_PTR (
  150.                                 ACPI_RESOURCE, Context);
  151.     ACPI_RESOURCE           *Resource;
  152.     ACPI_STATUS             Status;
  153.  
  154.  
  155.     ACPI_FUNCTION_TRACE (RsConvertAmlToResources);
  156.  
  157.  
  158.     /*
  159.      * Check that the input buffer and all subsequent pointers into it
  160.      * are aligned on a native word boundary. Most important on IA64
  161.      */
  162.     Resource = *ResourcePtr;
  163.     if (ACPI_IS_MISALIGNED (Resource))
  164.     {
  165.         ACPI_WARNING ((AE_INFO,
  166.             "Misaligned resource pointer %p", Resource));
  167.     }
  168.  
  169.     /* Convert the AML byte stream resource to a local resource struct */
  170.  
  171.     Status = AcpiRsConvertAmlToResource (
  172.                 Resource, ACPI_CAST_PTR (AML_RESOURCE, Aml),
  173.                 AcpiGbl_GetResourceDispatch[ResourceIndex]);
  174.     if (ACPI_FAILURE (Status))
  175.     {
  176.         ACPI_EXCEPTION ((AE_INFO, Status,
  177.             "Could not convert AML resource (Type 0x%X)", *Aml));
  178.         return_ACPI_STATUS (Status);
  179.     }
  180.  
  181.     ACPI_DEBUG_PRINT ((ACPI_DB_RESOURCES,
  182.         "Type %.2X, AmlLength %.2X InternalLength %.2X\n",
  183.         AcpiUtGetResourceType (Aml), Length,
  184.         Resource->Length));
  185.  
  186.     /* Point to the next structure in the output buffer */
  187.  
  188.     *ResourcePtr = ACPI_ADD_PTR (void, Resource, Resource->Length);
  189.     return_ACPI_STATUS (AE_OK);
  190. }
  191.  
  192.  
  193. /*******************************************************************************
  194.  *
  195.  * FUNCTION:    AcpiRsConvertResourcesToAml
  196.  *
  197.  * PARAMETERS:  Resource            - Pointer to the resource linked list
  198.  *              AmlSizeNeeded       - Calculated size of the byte stream
  199.  *                                    needed from calling AcpiRsGetAmlLength()
  200.  *                                    The size of the OutputBuffer is
  201.  *                                    guaranteed to be >= AmlSizeNeeded
  202.  *              OutputBuffer        - Pointer to the buffer that will
  203.  *                                    contain the byte stream
  204.  *
  205.  * RETURN:      Status
  206.  *
  207.  * DESCRIPTION: Takes the resource linked list and parses it, creating a
  208.  *              byte stream of resources in the caller's output buffer
  209.  *
  210.  ******************************************************************************/
  211.  
  212. ACPI_STATUS
  213. AcpiRsConvertResourcesToAml (
  214.     ACPI_RESOURCE           *Resource,
  215.     ACPI_SIZE               AmlSizeNeeded,
  216.     UINT8                   *OutputBuffer)
  217. {
  218.     UINT8                   *Aml = OutputBuffer;
  219.     UINT8                   *EndAml = OutputBuffer + AmlSizeNeeded;
  220.     ACPI_STATUS             Status;
  221.  
  222.  
  223.     ACPI_FUNCTION_TRACE (RsConvertResourcesToAml);
  224.  
  225.  
  226.     /* Walk the resource descriptor list, convert each descriptor */
  227.  
  228.     while (Aml < EndAml)
  229.     {
  230.         /* Validate the (internal) Resource Type */
  231.  
  232.         if (Resource->Type > ACPI_RESOURCE_TYPE_MAX)
  233.         {
  234.             ACPI_ERROR ((AE_INFO,
  235.                 "Invalid descriptor type (0x%X) in resource list",
  236.                 Resource->Type));
  237.             return_ACPI_STATUS (AE_BAD_DATA);
  238.         }
  239.  
  240.         /* Perform the conversion */
  241.  
  242.         Status = AcpiRsConvertResourceToAml (Resource,
  243.                     ACPI_CAST_PTR (AML_RESOURCE, Aml),
  244.                     AcpiGbl_SetResourceDispatch[Resource->Type]);
  245.         if (ACPI_FAILURE (Status))
  246.         {
  247.             ACPI_EXCEPTION ((AE_INFO, Status,
  248.                 "Could not convert resource (type 0x%X) to AML",
  249.                 Resource->Type));
  250.             return_ACPI_STATUS (Status);
  251.         }
  252.  
  253.         /* Perform final sanity check on the new AML resource descriptor */
  254.  
  255.         Status = AcpiUtValidateResource (
  256.                     ACPI_CAST_PTR (AML_RESOURCE, Aml), NULL);
  257.         if (ACPI_FAILURE (Status))
  258.         {
  259.             return_ACPI_STATUS (Status);
  260.         }
  261.  
  262.         /* Check for end-of-list, normal exit */
  263.  
  264.         if (Resource->Type == ACPI_RESOURCE_TYPE_END_TAG)
  265.         {
  266.             /* An End Tag indicates the end of the input Resource Template */
  267.  
  268.             return_ACPI_STATUS (AE_OK);
  269.         }
  270.  
  271.         /*
  272.          * Extract the total length of the new descriptor and set the
  273.          * Aml to point to the next (output) resource descriptor
  274.          */
  275.         Aml += AcpiUtGetDescriptorLength (Aml);
  276.  
  277.         /* Point to the next input resource descriptor */
  278.  
  279.         Resource = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, Resource->Length);
  280.     }
  281.  
  282.     /* Completed buffer, but did not find an EndTag resource descriptor */
  283.  
  284.     return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
  285. }
  286.  
  287.