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 /*******************************************************************************
  *
  * Module Name: utresrc - Resource managment utilities
  *
  ******************************************************************************/
 
 /******************************************************************************
  *
  * 1. Copyright Notice
  *
  * Some or all of this work - Copyright (c) 1999 - 2009, 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 __UTRESRC_C__
 
 #include "acpi.h"
 #include "accommon.h"
 #include "amlresrc.h"
 
 
 #define _COMPONENT          ACPI_UTILITIES
         ACPI_MODULE_NAME    ("utresrc")
 
 
 #if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUGGER)
 
 /*
  * Strings used to decode resource descriptors.
  * Used by both the disasssembler and the debugger resource dump routines
  */
 const char                      *AcpiGbl_BmDecode[] =
 {
     "NotBusMaster",
     "BusMaster"
 };
 
 const char                      *AcpiGbl_ConfigDecode[] =
 {
     "0 - Good Configuration",
     "1 - Acceptable Configuration",
     "2 - Suboptimal Configuration",
     "3 - ***Invalid Configuration***",
 };
 
 const char                      *AcpiGbl_ConsumeDecode[] =
 {
     "ResourceProducer",
     "ResourceConsumer"
 };
 
 const char                      *AcpiGbl_DecDecode[] =
 {
     "PosDecode",
     "SubDecode"
 };
 
 const char                      *AcpiGbl_HeDecode[] =
 {
     "Level",
     "Edge"
 };
 
 const char                      *AcpiGbl_IoDecode[] =
 {
     "Decode10",
     "Decode16"
 };
 
 const char                      *AcpiGbl_LlDecode[] =
 {
     "ActiveHigh",
     "ActiveLow"
 };
 
 const char                      *AcpiGbl_MaxDecode[] =
 {
     "MaxNotFixed",
     "MaxFixed"
 };
 
 const char                      *AcpiGbl_MemDecode[] =
 {
     "NonCacheable",
     "Cacheable",
     "WriteCombining",
     "Prefetchable"
 };
 
 const char                      *AcpiGbl_MinDecode[] =
 {
     "MinNotFixed",
     "MinFixed"
 };
 
 const char                      *AcpiGbl_MtpDecode[] =
 {
     "AddressRangeMemory",
     "AddressRangeReserved",
     "AddressRangeACPI",
     "AddressRangeNVS"
 };
 
 const char                      *AcpiGbl_RngDecode[] =
 {
     "InvalidRanges",
     "NonISAOnlyRanges",
     "ISAOnlyRanges",
     "EntireRange"
 };
 
 const char                      *AcpiGbl_RwDecode[] =
 {
     "ReadOnly",
     "ReadWrite"
 };
 
 const char                      *AcpiGbl_ShrDecode[] =
 {
     "Exclusive",
     "Shared"
 };
 
 const char                      *AcpiGbl_SizDecode[] =
 {
     "Transfer8",
     "Transfer8_16",
     "Transfer16",
     "InvalidSize"
 };
 
 const char                      *AcpiGbl_TrsDecode[] =
 {
     "DenseTranslation",
     "SparseTranslation"
 };
 
 const char                      *AcpiGbl_TtpDecode[] =
 {
     "TypeStatic",
     "TypeTranslation"
 };
 
 const char                      *AcpiGbl_TypDecode[] =
 {
     "Compatibility",
     "TypeA",
     "TypeB",
     "TypeF"
 };
 
 #endif
 
 
 /*
  * Base sizes of the raw AML resource descriptors, indexed by resource type.
  * Zero indicates a reserved (and therefore invalid) resource type.
  */
 const UINT8                 AcpiGbl_ResourceAmlSizes[] =
 {
     /* Small descriptors */
 
     0,
     0,
     0,
     0,
     ACPI_AML_SIZE_SMALL (AML_RESOURCE_IRQ),
     ACPI_AML_SIZE_SMALL (AML_RESOURCE_DMA),
     ACPI_AML_SIZE_SMALL (AML_RESOURCE_START_DEPENDENT),
     ACPI_AML_SIZE_SMALL (AML_RESOURCE_END_DEPENDENT),
     ACPI_AML_SIZE_SMALL (AML_RESOURCE_IO),
     ACPI_AML_SIZE_SMALL (AML_RESOURCE_FIXED_IO),
     0,
     0,
     0,
     0,
     ACPI_AML_SIZE_SMALL (AML_RESOURCE_VENDOR_SMALL),
     ACPI_AML_SIZE_SMALL (AML_RESOURCE_END_TAG),
 
     /* Large descriptors */
 
     0,
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_MEMORY24),
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_GENERIC_REGISTER),
     0,
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_VENDOR_LARGE),
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_MEMORY32),
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_FIXED_MEMORY32),
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_ADDRESS32),
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_ADDRESS16),
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_EXTENDED_IRQ),
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_ADDRESS64),
     ACPI_AML_SIZE_LARGE (AML_RESOURCE_EXTENDED_ADDRESS64)
 };
 
 
 /*
  * Resource types, used to validate the resource length field.
  * The length of fixed-length types must match exactly, variable
  * lengths must meet the minimum required length, etc.
  * Zero indicates a reserved (and therefore invalid) resource type.
  */
 static const UINT8          AcpiGbl_ResourceTypes[] =
 {
     /* Small descriptors */
 
     0,
     0,
     0,
     0,
     ACPI_SMALL_VARIABLE_LENGTH,
     ACPI_FIXED_LENGTH,
     ACPI_SMALL_VARIABLE_LENGTH,
     ACPI_FIXED_LENGTH,
     ACPI_FIXED_LENGTH,
     ACPI_FIXED_LENGTH,
     0,
     0,
     0,
     0,
     ACPI_VARIABLE_LENGTH,
     ACPI_FIXED_LENGTH,
 
     /* Large descriptors */
 
     0,
     ACPI_FIXED_LENGTH,
     ACPI_FIXED_LENGTH,
     0,
     ACPI_VARIABLE_LENGTH,
     ACPI_FIXED_LENGTH,
     ACPI_FIXED_LENGTH,
     ACPI_VARIABLE_LENGTH,
     ACPI_VARIABLE_LENGTH,
     ACPI_VARIABLE_LENGTH,
     ACPI_VARIABLE_LENGTH,
     ACPI_FIXED_LENGTH
 };
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiUtWalkAmlResources
  *
  * PARAMETERS:  Aml             - Pointer to the raw AML resource template
  *              AmlLength       - Length of the entire template
  *              UserFunction    - Called once for each descriptor found. If
  *                                NULL, a pointer to the EndTag is returned
  *              Context         - Passed to UserFunction
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Walk a raw AML resource list(buffer). User function called
  *              once for each resource found.
  *
  ******************************************************************************/
 
 ACPI_STATUS
 AcpiUtWalkAmlResources (
     UINT8                   *Aml,
     ACPI_SIZE               AmlLength,
     ACPI_WALK_AML_CALLBACK  UserFunction,
     void                    *Context)
 {
     ACPI_STATUS             Status;
     UINT8                   *EndAml;
     UINT8                   ResourceIndex;
     UINT32                  Length;
     UINT32                  Offset = 0;
 
 
     ACPI_FUNCTION_TRACE (UtWalkAmlResources);
 
 
     /* The absolute minimum resource template is one EndTag descriptor */
 
     if (AmlLength < sizeof (AML_RESOURCE_END_TAG))
     {
         return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
     }
 
     /* Point to the end of the resource template buffer */
 
     EndAml = Aml + AmlLength;
 
     /* Walk the byte list, abort on any invalid descriptor type or length */
 
     while (Aml < EndAml)
     {
         /* Validate the Resource Type and Resource Length */
 
         Status = AcpiUtValidateResource (Aml, &ResourceIndex);
         if (ACPI_FAILURE (Status))
         {
             return_ACPI_STATUS (Status);
         }
 
         /* Get the length of this descriptor */
 
         Length = AcpiUtGetDescriptorLength (Aml);
 
         /* Invoke the user function */
 
         if (UserFunction)
         {
             Status = UserFunction (Aml, Length, Offset, ResourceIndex, Context);
             if (ACPI_FAILURE (Status))
             {
                 return (Status);
             }
         }
 
         /* An EndTag descriptor terminates this resource template */
 
         if (AcpiUtGetResourceType (Aml) == ACPI_RESOURCE_NAME_END_TAG)
         {
             /*
              * There must be at least one more byte in the buffer for
              * the 2nd byte of the EndTag
              */
             if ((Aml + 1) >= EndAml)
             {
                 return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
             }
 
             /* Return the pointer to the EndTag if requested */
 
             if (!UserFunction)
             {
                 *(void **) Context = Aml;
             }
 
             /* Normal exit */
 
             return_ACPI_STATUS (AE_OK);
         }
 
         Aml += Length;
         Offset += Length;
     }
 
     /* Did not find an EndTag descriptor */
 
     return (AE_AML_NO_RESOURCE_END_TAG);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiUtValidateResource
  *
  * PARAMETERS:  Aml             - Pointer to the raw AML resource descriptor
  *              ReturnIndex     - Where the resource index is returned. NULL
  *                                if the index is not required.
  *
  * RETURN:      Status, and optionally the Index into the global resource tables
  *
  * DESCRIPTION: Validate an AML resource descriptor by checking the Resource
  *              Type and Resource Length. Returns an index into the global
  *              resource information/dispatch tables for later use.
  *
  ******************************************************************************/
 
 ACPI_STATUS
 AcpiUtValidateResource (
     void                    *Aml,
     UINT8                   *ReturnIndex)
 {
     UINT8                   ResourceType;
     UINT8                   ResourceIndex;
     ACPI_RS_LENGTH          ResourceLength;
     ACPI_RS_LENGTH          MinimumResourceLength;
 
 
     ACPI_FUNCTION_ENTRY ();
 
 
     /*
      * 1) Validate the ResourceType field (Byte 0)
      */
     ResourceType = ACPI_GET8 (Aml);
 
     /*
      * Byte 0 contains the descriptor name (Resource Type)
      * Examine the large/small bit in the resource header
      */
     if (ResourceType & ACPI_RESOURCE_NAME_LARGE)
     {
         /* Verify the large resource type (name) against the max */
 
         if (ResourceType > ACPI_RESOURCE_NAME_LARGE_MAX)
         {
             return (AE_AML_INVALID_RESOURCE_TYPE);
         }
 
         /*
          * Large Resource Type -- bits 6:0 contain the name
          * Translate range 0x80-0x8B to index range 0x10-0x1B
          */
         ResourceIndex = (UINT8) (ResourceType - 0x70);
     }
     else
     {
         /*
          * Small Resource Type -- bits 6:3 contain the name
          * Shift range to index range 0x00-0x0F
          */
         ResourceIndex = (UINT8)
             ((ResourceType & ACPI_RESOURCE_NAME_SMALL_MASK) >> 3);
     }
 
     /* Check validity of the resource type, zero indicates name is invalid */
 
     if (!AcpiGbl_ResourceTypes[ResourceIndex])
     {
         return (AE_AML_INVALID_RESOURCE_TYPE);
     }
 
 
     /*
      * 2) Validate the ResourceLength field. This ensures that the length
      *    is at least reasonable, and guarantees that it is non-zero.
      */
     ResourceLength = AcpiUtGetResourceLength (Aml);
     MinimumResourceLength = AcpiGbl_ResourceAmlSizes[ResourceIndex];
 
     /* Validate based upon the type of resource - fixed length or variable */
 
     switch (AcpiGbl_ResourceTypes[ResourceIndex])
     {
     case ACPI_FIXED_LENGTH:
 
         /* Fixed length resource, length must match exactly */
 
         if (ResourceLength != MinimumResourceLength)
         {
             return (AE_AML_BAD_RESOURCE_LENGTH);
         }
         break;
 
     case ACPI_VARIABLE_LENGTH:
 
         /* Variable length resource, length must be at least the minimum */
 
         if (ResourceLength < MinimumResourceLength)
         {
             return (AE_AML_BAD_RESOURCE_LENGTH);
         }
         break;
 
     case ACPI_SMALL_VARIABLE_LENGTH:
 
         /* Small variable length resource, length can be (Min) or (Min-1) */
 
         if ((ResourceLength > MinimumResourceLength) ||
             (ResourceLength < (MinimumResourceLength - 1)))
         {
             return (AE_AML_BAD_RESOURCE_LENGTH);
         }
         break;
 
     default:
 
         /* Shouldn't happen (because of validation earlier), but be sure */
 
         return (AE_AML_INVALID_RESOURCE_TYPE);
     }
 
     /* Optionally return the resource table index */
 
     if (ReturnIndex)
     {
         *ReturnIndex = ResourceIndex;
     }
 
     return (AE_OK);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiUtGetResourceType
  *
  * PARAMETERS:  Aml             - Pointer to the raw AML resource descriptor
  *
  * RETURN:      The Resource Type with no extraneous bits (except the
  *              Large/Small descriptor bit -- this is left alone)
  *
  * DESCRIPTION: Extract the Resource Type/Name from the first byte of
  *              a resource descriptor.
  *
  ******************************************************************************/
 
 UINT8
 AcpiUtGetResourceType (
     void                    *Aml)
 {
     ACPI_FUNCTION_ENTRY ();
 
 
     /*
      * Byte 0 contains the descriptor name (Resource Type)
      * Examine the large/small bit in the resource header
      */
     if (ACPI_GET8 (Aml) & ACPI_RESOURCE_NAME_LARGE)
     {
         /* Large Resource Type -- bits 6:0 contain the name */
 
         return (ACPI_GET8 (Aml));
     }
     else
     {
         /* Small Resource Type -- bits 6:3 contain the name */
 
         return ((UINT8) (ACPI_GET8 (Aml) & ACPI_RESOURCE_NAME_SMALL_MASK));
     }
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiUtGetResourceLength
  *
  * PARAMETERS:  Aml             - Pointer to the raw AML resource descriptor
  *
  * RETURN:      Byte Length
  *
  * DESCRIPTION: Get the "Resource Length" of a raw AML descriptor. By
  *              definition, this does not include the size of the descriptor
  *              header or the length field itself.
  *
  ******************************************************************************/
 
 UINT16
 AcpiUtGetResourceLength (
     void                    *Aml)
 {
     ACPI_RS_LENGTH          ResourceLength;
 
 
     ACPI_FUNCTION_ENTRY ();
 
 
     /*
      * Byte 0 contains the descriptor name (Resource Type)
      * Examine the large/small bit in the resource header
      */
     if (ACPI_GET8 (Aml) & ACPI_RESOURCE_NAME_LARGE)
     {
         /* Large Resource type -- bytes 1-2 contain the 16-bit length */
 
         ACPI_MOVE_16_TO_16 (&ResourceLength, ACPI_ADD_PTR (UINT8, Aml, 1));
 
     }
     else
     {
         /* Small Resource type -- bits 2:0 of byte 0 contain the length */
 
         ResourceLength = (UINT16) (ACPI_GET8 (Aml) &
                                     ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK);
     }
 
     return (ResourceLength);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiUtGetResourceHeaderLength
  *
  * PARAMETERS:  Aml             - Pointer to the raw AML resource descriptor
  *
  * RETURN:      Length of the AML header (depends on large/small descriptor)
  *
  * DESCRIPTION: Get the length of the header for this resource.
  *
  ******************************************************************************/
 
 UINT8
 AcpiUtGetResourceHeaderLength (
     void                    *Aml)
 {
     ACPI_FUNCTION_ENTRY ();
 
 
     /* Examine the large/small bit in the resource header */
 
     if (ACPI_GET8 (Aml) & ACPI_RESOURCE_NAME_LARGE)
     {
         return (sizeof (AML_RESOURCE_LARGE_HEADER));
     }
     else
     {
         return (sizeof (AML_RESOURCE_SMALL_HEADER));
     }
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiUtGetDescriptorLength
  *
  * PARAMETERS:  Aml             - Pointer to the raw AML resource descriptor
  *
  * RETURN:      Byte length
  *
  * DESCRIPTION: Get the total byte length of a raw AML descriptor, including the
  *              length of the descriptor header and the length field itself.
  *              Used to walk descriptor lists.
  *
  ******************************************************************************/
 
 UINT32
 AcpiUtGetDescriptorLength (
     void                    *Aml)
 {
     ACPI_FUNCTION_ENTRY ();
 
 
     /*
      * Get the Resource Length (does not include header length) and add
      * the header length (depends on if this is a small or large resource)
      */
     return (AcpiUtGetResourceLength (Aml) +
             AcpiUtGetResourceHeaderLength (Aml));
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiUtGetResourceEndTag
  *
  * PARAMETERS:  ObjDesc         - The resource template buffer object
  *              EndTag          - Where the pointer to the EndTag is returned
  *
  * RETURN:      Status, pointer to the end tag
  *
  * DESCRIPTION: Find the EndTag resource descriptor in an AML resource template
  *              Note: allows a buffer length of zero.
  *
  ******************************************************************************/
 
 ACPI_STATUS
 AcpiUtGetResourceEndTag (
     ACPI_OPERAND_OBJECT     *ObjDesc,
     UINT8                   **EndTag)
 {
     ACPI_STATUS             Status;
 
 
     ACPI_FUNCTION_TRACE (UtGetResourceEndTag);
 
 
     /* Allow a buffer length of zero */
 
     if (!ObjDesc->Buffer.Length)
     {
         *EndTag = ObjDesc->Buffer.Pointer;
         return_ACPI_STATUS (AE_OK);
     }
 
     /* Validate the template and get a pointer to the EndTag */
 
     Status = AcpiUtWalkAmlResources (ObjDesc->Buffer.Pointer,
                 ObjDesc->Buffer.Length, NULL, EndTag);
 
     return_ACPI_STATUS (Status);
 }