text: /******************************************************************************
   *
   * Module Name: aslresource - Resource template/descriptor utilities
   *
   *****************************************************************************/
  
  /******************************************************************************
   *
   * 1. Copyright Notice
   *
   * Some or all of this work - Copyright (c) 1999 - 2020, 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.
   *
   *****************************************************************************
   *
   * Alternatively, you may choose to be licensed under the terms of the
   * following license:
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions, and the following disclaimer,
   *    without modification.
   * 2. Redistributions in binary form must reproduce at minimum a disclaimer
   *    substantially similar to the "NO WARRANTY" disclaimer below
   *    ("Disclaimer") and any redistribution must be conditioned upon
   *    including a substantially similar Disclaimer requirement for further
   *    binary redistribution.
   * 3. Neither the names of the above-listed copyright holders nor the names
   *    of any contributors may be used to endorse or promote products derived
   *    from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * Alternatively, you may choose to be licensed under the terms of the
   * GNU General Public License ("GPL") version 2 as published by the Free
   * Software Foundation.
   *
   *****************************************************************************/
  
  #include "aslcompiler.h"
  #include "aslcompiler.y.h"
  #include "amlcode.h"
  
  
  #define _COMPONENT          ACPI_COMPILER
          ACPI_MODULE_NAME    ("aslresource")
  
  
  /*******************************************************************************
   *
   * FUNCTION:    RsSmallAddressCheck
   *
   * PARAMETERS:  Minimum             - Address Min value
   *              Maximum             - Address Max value
   *              Length              - Address range value
   *              Alignment           - Address alignment value
   *              MinOp               - Original Op for Address Min
   *              MaxOp               - Original Op for Address Max
   *              LengthOp            - Original Op for address range
   *              AlignOp             - Original Op for address alignment. If
   *                                    NULL, means "zero value for alignment is
   *                                    OK, and means 64K alignment" (for
   *                                    Memory24 descriptor)
   *              Op                  - Parent Op for entire construct
   *
   * RETURN:      None. Adds error messages to error log if necessary
   *
   * DESCRIPTION: Perform common value checks for "small" address descriptors.
   *              Currently:
   *                  Io, Memory24, Memory32
   *
   ******************************************************************************/
  
  void
  RsSmallAddressCheck (
      UINT8                   Type,
      UINT32                  Minimum,
      UINT32                  Maximum,
      UINT32                  Length,
      UINT32                  Alignment,
      ACPI_PARSE_OBJECT       *MinOp,
      ACPI_PARSE_OBJECT       *MaxOp,
      ACPI_PARSE_OBJECT       *LengthOp,
      ACPI_PARSE_OBJECT       *AlignOp,
      ACPI_PARSE_OBJECT       *Op)
  {
  
      if (AslGbl_NoResourceChecking)
      {
          return;
      }
  
      /*
       * Check for a so-called "null descriptor". These are descriptors that are
       * created with most fields set to zero. The intent is that the descriptor
       * will be updated/completed at runtime via a BufferField.
       *
       * If the descriptor does NOT have a resource tag, it cannot be referenced
       * by a BufferField and we will flag this as an error. Conversely, if
       * the descriptor has a resource tag, we will assume that a BufferField
       * will be used to dynamically update it, so no error.
       *
       * A possible enhancement to this check would be to verify that in fact
       * a BufferField is created using the resource tag, and perhaps even
       * verify that a Store is performed to the BufferField.
       *
       * Note: for these descriptors, Alignment is allowed to be zero
       */
      if (!Minimum && !Maximum && !Length)
      {
          if (!Op->Asl.ExternalName)
          {
              /* No resource tag. Descriptor is fixed and is also illegal */
  
              AslError (ASL_ERROR, ASL_MSG_NULL_DESCRIPTOR, Op, NULL);
          }
  
          return;
      }
  
      /*
       * Range checks for Memory24 and Memory32.
       * IO descriptor has different definition of min/max, don't check.
       */
      if (Type != ACPI_RESOURCE_NAME_IO)
      {
          /* Basic checks on Min/Max/Length */
  
          if (Minimum > Maximum)
          {
              AslError (ASL_ERROR, ASL_MSG_INVALID_MIN_MAX, MinOp, NULL);
          }
          else if (Length > (Maximum - Minimum + 1))
          {
              AslError (ASL_ERROR, ASL_MSG_INVALID_LENGTH, LengthOp, NULL);
          }
  
          /* Special case for Memory24, min/max values are compressed */
  
          if (Type == ACPI_RESOURCE_NAME_MEMORY24)
          {
              if (!Alignment) /* Alignment==0 means 64K alignment */
              {
                  Alignment = ACPI_UINT16_MAX + 1;
              }
  
              Minimum <<= 8;
              Maximum <<= 8;
          }
      }
  
      /* Alignment of zero is not in ACPI spec, but is used to mean byte acc */
  
      if (!Alignment)
      {
          Alignment = 1;
      }
  
      /* Addresses must be an exact multiple of the alignment value */
  
      if (Minimum % Alignment)
      {
          AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, MinOp, NULL);
      }
      if (Maximum % Alignment)
      {
          AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, MaxOp, NULL);
      }
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    RsLargeAddressCheck
   *
   * PARAMETERS:  Minimum             - Address Min value
   *              Maximum             - Address Max value
   *              Length              - Address range value
   *              Granularity         - Address granularity value
   *              Flags               - General flags for address descriptors:
   *                                    _MIF, _MAF, _DEC
   *              MinOp               - Original Op for Address Min
   *              MaxOp               - Original Op for Address Max
   *              LengthOp            - Original Op for address range
   *              GranOp              - Original Op for address granularity
   *              Op                  - Parent Op for entire construct
   *
   * RETURN:      None. Adds error messages to error log if necessary
   *
   * DESCRIPTION: Perform common value checks for "large" address descriptors.
   *              Currently:
   *                  WordIo,     WordBusNumber,  WordSpace
   *                  DWordIo,    DWordMemory,    DWordSpace
   *                  QWordIo,    QWordMemory,    QWordSpace
   *                  ExtendedIo, ExtendedMemory, ExtendedSpace
   *
   * _MIF flag set means that the minimum address is fixed and is not relocatable
   * _MAF flag set means that the maximum address is fixed and is not relocatable
   * Length of zero means that the record size is variable
   *
   * This function implements the LEN/MIF/MAF/MIN/MAX/GRA rules within Table 6-40
   * of the ACPI 4.0a specification. Added 04/2010.
   *
   ******************************************************************************/
  
  void
  RsLargeAddressCheck (
      UINT64                  Minimum,
      UINT64                  Maximum,
      UINT64                  Length,
      UINT64                  Granularity,
      UINT8                   Flags,
      ACPI_PARSE_OBJECT       *MinOp,
      ACPI_PARSE_OBJECT       *MaxOp,
      ACPI_PARSE_OBJECT       *LengthOp,
      ACPI_PARSE_OBJECT       *GranOp,
      ACPI_PARSE_OBJECT       *Op)
  {
  
      if (AslGbl_NoResourceChecking)
      {
          return;
      }
  
      /*
       * Check for a so-called "null descriptor". These are descriptors that are
       * created with most fields set to zero. The intent is that the descriptor
       * will be updated/completed at runtime via a BufferField.
       *
       * If the descriptor does NOT have a resource tag, it cannot be referenced
       * by a BufferField and we will flag this as an error. Conversely, if
       * the descriptor has a resource tag, we will assume that a BufferField
       * will be used to dynamically update it, so no error.
       *
       * A possible enhancement to this check would be to verify that in fact
       * a BufferField is created using the resource tag, and perhaps even
       * verify that a Store is performed to the BufferField.
       */
      if (!Minimum && !Maximum && !Length && !Granularity)
      {
          if (!Op->Asl.ExternalName)
          {
              /* No resource tag. Descriptor is fixed and is also illegal */
  
              AslError (ASL_ERROR, ASL_MSG_NULL_DESCRIPTOR, Op, NULL);
          }
  
          return;
      }
  
      /* Basic checks on Min/Max/Length */
  
      if (Minimum > Maximum)
      {
          AslError (ASL_ERROR, ASL_MSG_INVALID_MIN_MAX, MinOp, NULL);
          return;
      }
      else if (Length > (Maximum - Minimum + 1))
      {
          AslError (ASL_ERROR, ASL_MSG_INVALID_LENGTH, LengthOp, NULL);
          return;
      }
  
      /* If specified (non-zero), ensure granularity is a power-of-two minus one */
  
      if (Granularity)
      {
          if ((Granularity + 1) &
               Granularity)
          {
              AslError (ASL_ERROR, ASL_MSG_INVALID_GRANULARITY, GranOp, NULL);
              return;
          }
      }
  
      /*
       * Check the various combinations of Length, MinFixed, and MaxFixed
       */
      if (Length)
      {
          /* Fixed non-zero length */
  
          switch (Flags & (ACPI_RESOURCE_FLAG_MIF | ACPI_RESOURCE_FLAG_MAF))
          {
          case 0:
              /*
               * Fixed length, variable locations (both _MIN and _MAX).
               * Length must be a multiple of granularity
               */
              if (Granularity & Length)
              {
                  AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, LengthOp, NULL);
              }
              break;
  
          case (ACPI_RESOURCE_FLAG_MIF | ACPI_RESOURCE_FLAG_MAF):
  
              /* Fixed length, fixed location. Granularity must be zero */
  
              if (Granularity != 0)
              {
                  AslError (ASL_ERROR, ASL_MSG_INVALID_GRAN_FIXED, GranOp, NULL);
              }
  
              /* Length must be exactly the size of the min/max window */
  
              if (Length != (Maximum - Minimum + 1))
              {
                  AslError (ASL_ERROR, ASL_MSG_INVALID_LENGTH_FIXED, LengthOp, NULL);
              }
              break;
  
          /* All other combinations are invalid */
  
          case ACPI_RESOURCE_FLAG_MIF:
          case ACPI_RESOURCE_FLAG_MAF:
          default:
  
              AslError (ASL_ERROR, ASL_MSG_INVALID_ADDR_FLAGS, LengthOp, NULL);
          }
      }
      else
      {
          /* Variable length (length==0) */
  
          switch (Flags & (ACPI_RESOURCE_FLAG_MIF | ACPI_RESOURCE_FLAG_MAF))
          {
          case 0:
              /*
               * Both _MIN and _MAX are variable.
               * No additional requirements, just exit
               */
              break;
  
          case ACPI_RESOURCE_FLAG_MIF:
  
              /* _MIN is fixed. _MIN must be multiple of _GRA */
  
              /*
               * The granularity is defined by the ACPI specification to be a
               * power-of-two minus one, therefore the granularity is a
               * bitmask which can be used to easily validate the addresses.
               */
              if (Granularity & Minimum)
              {
                  AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, MinOp, NULL);
              }
              break;
  
          case ACPI_RESOURCE_FLAG_MAF:
  
              /* _MAX is fixed. (_MAX + 1) must be multiple of _GRA */
  
              if (Granularity & (Maximum + 1))
              {
                  AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, MaxOp, "-1");
              }
              break;
  
          /* Both MIF/MAF set is invalid if length is zero */
  
          case (ACPI_RESOURCE_FLAG_MIF | ACPI_RESOURCE_FLAG_MAF):
          default:
  
              AslError (ASL_ERROR, ASL_MSG_INVALID_ADDR_FLAGS, LengthOp, NULL);
          }
      }
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    RsGetStringDataLength
   *
   * PARAMETERS:  InitializerOp     - Start of a subtree of init nodes
   *
   * RETURN:      Valid string length if a string node is found (otherwise 0)
   *
   * DESCRIPTION: In a list of peer nodes, find the first one that contains a
   *              string and return the length of the string.
   *
   ******************************************************************************/
  
  UINT16
  RsGetStringDataLength (
      ACPI_PARSE_OBJECT       *InitializerOp)
  {
  
      while (InitializerOp)
      {
          if (InitializerOp->Asl.ParseOpcode == PARSEOP_STRING_LITERAL)
          {
              return ((UINT16) (strlen (InitializerOp->Asl.Value.String) + 1));
          }
  
          InitializerOp = ASL_GET_PEER_NODE (InitializerOp);
      }
  
      return (0);
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    RsAllocateResourceNode
   *
   * PARAMETERS:  Size        - Size of node in bytes
   *
   * RETURN:      The allocated node - aborts on allocation failure
   *
   * DESCRIPTION: Allocate a resource description node and the resource
   *              descriptor itself (the nodes are used to link descriptors).
   *
   ******************************************************************************/
  
  ASL_RESOURCE_NODE *
  RsAllocateResourceNode (
      UINT32                  Size)
  {
      ASL_RESOURCE_NODE       *Rnode;
  
  
      /* Allocate the node */
  
      Rnode = UtLocalCalloc (sizeof (ASL_RESOURCE_NODE));
  
      /* Allocate the resource descriptor itself */
  
      Rnode->Buffer = UtLocalCalloc (Size);
      Rnode->BufferLength = Size;
      return (Rnode);
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    RsCreateResourceField
   *
   * PARAMETERS:  Op              - Resource field node
   *              Name            - Name of the field (Used only to reference
   *                                the field in the ASL, not in the AML)
   *              ByteOffset      - Offset from the field start
   *              BitOffset       - Additional bit offset
   *              BitLength       - Number of bits in the field
   *
   * RETURN:      None, sets fields within the input node
   *
   * DESCRIPTION: Utility function to generate a named bit field within a
   *              resource descriptor. Mark a node as 1) a field in a resource
   *              descriptor, and 2) set the value to be a BIT offset
   *
   ******************************************************************************/
  
  void
  RsCreateResourceField (
      ACPI_PARSE_OBJECT       *Op,
      char                    *Name,
      UINT32                  ByteOffset,
      UINT32                  BitOffset,
      UINT32                  BitLength)
  {
  
      Op->Asl.ExternalName = Name;
      Op->Asl.CompileFlags |= OP_IS_RESOURCE_FIELD;
  
      Op->Asl.Value.Tag.BitOffset = (ByteOffset * 8) + BitOffset;
      Op->Asl.Value.Tag.BitLength = BitLength;
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    RsSetFlagBits
   *
   * PARAMETERS:  *Flags          - Pointer to the flag byte
   *              Op              - Flag initialization node
   *              Position        - Bit position within the flag byte
   *              Default         - Used if the node is DEFAULT.
   *
   * RETURN:      Sets bits within the *Flags output byte.
   *
   * DESCRIPTION: Set a bit in a cumulative flags word from an initialization
   *              node. Will use a default value if the node is DEFAULT, meaning
   *              that no value was specified in the ASL. Used to merge multiple
   *              keywords into a single flags byte.
   *
   ******************************************************************************/
  
  void
  RsSetFlagBits (
      UINT8                   *Flags,
      ACPI_PARSE_OBJECT       *Op,
      UINT8                   Position,
      UINT8                   DefaultBit)
  {
  
      if (Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
      {
          /* Use the default bit */
  
          *Flags |= (DefaultBit << Position);
      }
      else
      {
          /* Use the bit specified in the initialization node */
  
          *Flags |= (((UINT8) Op->Asl.Value.Integer) << Position);
      }
  }
  
  
  void
  RsSetFlagBits16 (
      UINT16                  *Flags,
      ACPI_PARSE_OBJECT       *Op,
      UINT8                   Position,
      UINT8                   DefaultBit)
  {
  
      if (Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
      {
          /* Use the default bit */
  
          *Flags |= (DefaultBit << Position);
      }
      else
      {
          /* Use the bit specified in the initialization node */
  
          *Flags |= (((UINT16) Op->Asl.Value.Integer) << Position);
      }
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    RsCompleteNodeAndGetNext
   *
   * PARAMETERS:  Op            - Resource node to be completed
   *
   * RETURN:      The next peer to the input node.
   *
   * DESCRIPTION: Mark the current node completed and return the next peer.
   *              The node ParseOpcode is set to DEFAULT_ARG, meaning that
   *              this node is to be ignored from now on.
   *
   ******************************************************************************/
  
  ACPI_PARSE_OBJECT *
  RsCompleteNodeAndGetNext (
      ACPI_PARSE_OBJECT       *Op)
  {
  
      /* Mark this node unused */
  
      Op->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
  
      /* Move on to the next peer node in the initializer list */
  
      return (ASL_GET_PEER_NODE (Op));
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    RsCheckListForDuplicates
   *
   * PARAMETERS:  Op                  - First op in the initializer list
   *
   * RETURN:      None
   *
   * DESCRIPTION: Check an initializer list for duplicate values. Emits an error
   *              if any duplicates are found.
   *
   ******************************************************************************/
  
  void
  RsCheckListForDuplicates (
      ACPI_PARSE_OBJECT       *Op)
  {
      ACPI_PARSE_OBJECT       *NextValueOp = Op;
      ACPI_PARSE_OBJECT       *NextOp;
      UINT32                  Value;
  
  
      if (!Op)
      {
          return;
      }
  
      /* Search list once for each value in the list */
  
      while (NextValueOp)
      {
          Value = (UINT32) NextValueOp->Asl.Value.Integer;
  
          /* Compare this value to all remaining values in the list */
  
          NextOp = ASL_GET_PEER_NODE (NextValueOp);
          while (NextOp)
          {
              if (NextOp->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG)
              {
                  /* Compare values */
  
                  if (Value == (UINT32) NextOp->Asl.Value.Integer)
                  {
                      /* Emit error only once per duplicate node */
  
                      if (!(NextOp->Asl.CompileFlags & OP_IS_DUPLICATE))
                      {
                          NextOp->Asl.CompileFlags |= OP_IS_DUPLICATE;
                          AslError (ASL_ERROR, ASL_MSG_DUPLICATE_ITEM,
                              NextOp, NULL);
                      }
                  }
              }
  
              NextOp = ASL_GET_PEER_NODE (NextOp);
          }
  
          NextValueOp = ASL_GET_PEER_NODE (NextValueOp);
      }
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    RsDoOneResourceDescriptor
   *
   * PARAMETERS:  DescriptorTypeOp    - Parent parse node of the descriptor
   *              CurrentByteOffset   - Offset in the resource descriptor
   *                                    buffer.
   *
   * RETURN:      A valid resource node for the descriptor
   *
   * DESCRIPTION: Dispatches the processing of one resource descriptor
   *
   ******************************************************************************/
  
  ASL_RESOURCE_NODE *
  RsDoOneResourceDescriptor (
      ASL_RESOURCE_INFO       *Info,
      UINT8                   *State)
  {
      ASL_RESOURCE_NODE       *Rnode = NULL;
  
  
      /* Construct the resource */
  
      switch (Info->DescriptorTypeOp->Asl.ParseOpcode)
      {
      case PARSEOP_DMA:
  
          Rnode = RsDoDmaDescriptor (Info);
          break;
  
      case PARSEOP_FIXEDDMA:
  
          Rnode = RsDoFixedDmaDescriptor (Info);
          break;
  
      case PARSEOP_DWORDIO:
  
          Rnode = RsDoDwordIoDescriptor (Info);
          break;
  
      case PARSEOP_DWORDMEMORY:
  
          Rnode = RsDoDwordMemoryDescriptor (Info);
          break;
  
      case PARSEOP_DWORDSPACE:
  
          Rnode = RsDoDwordSpaceDescriptor (Info);
          break;
  
      case PARSEOP_ENDDEPENDENTFN:
  
          switch (*State)
          {
          case ACPI_RSTATE_NORMAL:
  
              AslError (ASL_ERROR, ASL_MSG_MISSING_STARTDEPENDENT,
                  Info->DescriptorTypeOp, NULL);
              break;
  
          case ACPI_RSTATE_START_DEPENDENT:
  
              AslError (ASL_ERROR, ASL_MSG_DEPENDENT_NESTING,
                  Info->DescriptorTypeOp, NULL);
              break;
  
          case ACPI_RSTATE_DEPENDENT_LIST:
          default:
  
              break;
          }
  
          *State = ACPI_RSTATE_NORMAL;
          Rnode = RsDoEndDependentDescriptor (Info);
          break;
  
      case PARSEOP_ENDTAG:
  
          Rnode = RsDoEndTagDescriptor (Info);
          break;
  
      case PARSEOP_EXTENDEDIO:
  
          Rnode = RsDoExtendedIoDescriptor (Info);
          break;
  
      case PARSEOP_EXTENDEDMEMORY:
  
          Rnode = RsDoExtendedMemoryDescriptor (Info);
          break;
  
      case PARSEOP_EXTENDEDSPACE:
  
          Rnode = RsDoExtendedSpaceDescriptor (Info);
          break;
  
      case PARSEOP_FIXEDIO:
  
          Rnode = RsDoFixedIoDescriptor (Info);
          break;
  
      case PARSEOP_INTERRUPT:
  
          Rnode = RsDoInterruptDescriptor (Info);
          break;
  
      case PARSEOP_IO:
  
          Rnode = RsDoIoDescriptor (Info);
          break;
  
      case PARSEOP_IRQ:
  
          Rnode = RsDoIrqDescriptor (Info);
          break;
  
      case PARSEOP_IRQNOFLAGS:
  
          Rnode = RsDoIrqNoFlagsDescriptor (Info);
          break;
  
      case PARSEOP_MEMORY24:
  
          Rnode = RsDoMemory24Descriptor (Info);
          break;
  
      case PARSEOP_MEMORY32:
  
          Rnode = RsDoMemory32Descriptor (Info);
          break;
  
      case PARSEOP_MEMORY32FIXED:
  
          Rnode = RsDoMemory32FixedDescriptor (Info);
          break;
  
      case PARSEOP_QWORDIO:
  
          Rnode = RsDoQwordIoDescriptor (Info);
          break;
  
      case PARSEOP_QWORDMEMORY:
  
          Rnode = RsDoQwordMemoryDescriptor (Info);
          break;
  
      case PARSEOP_QWORDSPACE:
  
          Rnode = RsDoQwordSpaceDescriptor (Info);
          break;
  
      case PARSEOP_REGISTER:
  
          Rnode = RsDoGeneralRegisterDescriptor (Info);
          break;
  
      case PARSEOP_STARTDEPENDENTFN:
  
          switch (*State)
          {
          case ACPI_RSTATE_START_DEPENDENT:
  
              AslError (ASL_ERROR, ASL_MSG_DEPENDENT_NESTING,
                  Info->DescriptorTypeOp, NULL);
              break;
  
          case ACPI_RSTATE_NORMAL:
          case ACPI_RSTATE_DEPENDENT_LIST:
          default:
  
              break;
          }
  
          *State = ACPI_RSTATE_START_DEPENDENT;
          Rnode = RsDoStartDependentDescriptor (Info);
          *State = ACPI_RSTATE_DEPENDENT_LIST;
          break;
  
      case PARSEOP_STARTDEPENDENTFN_NOPRI:
  
          switch (*State)
          {
          case ACPI_RSTATE_START_DEPENDENT:
  
              AslError (ASL_ERROR, ASL_MSG_DEPENDENT_NESTING,
                  Info->DescriptorTypeOp, NULL);
              break;
  
          case ACPI_RSTATE_NORMAL:
          case ACPI_RSTATE_DEPENDENT_LIST:
          default:
  
              break;
          }
  
          *State = ACPI_RSTATE_START_DEPENDENT;
          Rnode = RsDoStartDependentNoPriDescriptor (Info);
          *State = ACPI_RSTATE_DEPENDENT_LIST;
          break;
  
      case PARSEOP_VENDORLONG:
  
          Rnode = RsDoVendorLargeDescriptor (Info);
          break;
  
      case PARSEOP_VENDORSHORT:
  
          Rnode = RsDoVendorSmallDescriptor (Info);
          break;
  
      case PARSEOP_WORDBUSNUMBER:
  
          Rnode = RsDoWordBusNumberDescriptor (Info);
          break;
  
      case PARSEOP_WORDIO:
  
          Rnode = RsDoWordIoDescriptor (Info);
          break;
  
      case PARSEOP_WORDSPACE:
  
          Rnode = RsDoWordSpaceDescriptor (Info);
          break;
  
      case PARSEOP_GPIO_INT:
  
          Rnode = RsDoGpioIntDescriptor (Info);
          break;
  
      case PARSEOP_GPIO_IO:
  
          Rnode = RsDoGpioIoDescriptor (Info);
          break;
  
      case PARSEOP_I2C_SERIALBUS:
      case PARSEOP_I2C_SERIALBUS_V2:
  
          Rnode = RsDoI2cSerialBusDescriptor (Info);
          break;
  
      case PARSEOP_SPI_SERIALBUS:
      case PARSEOP_SPI_SERIALBUS_V2:
  
          Rnode = RsDoSpiSerialBusDescriptor (Info);
          break;
  
      case PARSEOP_UART_SERIALBUS:
      case PARSEOP_UART_SERIALBUS_V2:
  
          Rnode = RsDoUartSerialBusDescriptor (Info);
          break;
  
      case PARSEOP_PINCONFIG:
  
          Rnode = RsDoPinConfigDescriptor (Info);
          break;
  
      case PARSEOP_PINFUNCTION:
  
          Rnode = RsDoPinFunctionDescriptor (Info);
          break;
  
      case PARSEOP_PINGROUP:
  
          Rnode = RsDoPinGroupDescriptor (Info);
          break;
  
      case PARSEOP_PINGROUPFUNCTION:
  
          Rnode = RsDoPinGroupFunctionDescriptor (Info);
          break;
  
      case PARSEOP_PINGROUPCONFIG:
  
          Rnode = RsDoPinGroupConfigDescriptor (Info);
          break;
  
      case PARSEOP_DEFAULT_ARG:
  
          /* Just ignore any of these, they are used as fillers/placeholders */
          break;
  
      default:
  
          printf ("Unknown resource descriptor type [%s]\n",
              Info->DescriptorTypeOp->Asl.ParseOpName);
          break;
      }
  
      /*
       * Mark original node as unused, but head of a resource descriptor.
       * This allows the resource to be installed in the namespace so that
       * references to the descriptor can be resolved.
       */
      Info->DescriptorTypeOp->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
      Info->DescriptorTypeOp->Asl.CompileFlags = OP_IS_RESOURCE_DESC;
      Info->DescriptorTypeOp->Asl.Value.Integer = Info->CurrentByteOffset;
  
      if (Rnode)
      {
          Info->DescriptorTypeOp->Asl.FinalAmlLength = Rnode->BufferLength;
          Info->DescriptorTypeOp->Asl.Extra =
              ((AML_RESOURCE *) Rnode->Buffer)->DescriptorType;
      }
  
      return (Rnode);
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    RsLinkDescriptorChain
   *
   * PARAMETERS:  PreviousRnode       - Pointer to the node that will be previous
   *                                    to the linked node,  At exit, set to the
   *                                    last node in the new chain.
   *              Rnode               - Resource node to link into the list
   *
   * RETURN:      Cumulative buffer byte offset of the new segment of chain
   *
   * DESCRIPTION: Link a descriptor chain at the end of an existing chain.
   *
   ******************************************************************************/
  
  UINT32
  RsLinkDescriptorChain (
      ASL_RESOURCE_NODE       **PreviousRnode,
      ASL_RESOURCE_NODE       *Rnode)
  {
      ASL_RESOURCE_NODE       *LastRnode;
      UINT32                  CurrentByteOffset;
  
  
      /* Anything to do? */
  
      if (!Rnode)
      {
          return (0);
      }
  
      /* Point the previous node to the new node */
  
      (*PreviousRnode)->Next = Rnode;
      CurrentByteOffset = Rnode->BufferLength;
  
      /* Walk to the end of the chain headed by Rnode */
  
      LastRnode = Rnode;
      while (LastRnode->Next)
      {
          LastRnode = LastRnode->Next;
          CurrentByteOffset += LastRnode->BufferLength;
      }
  
      /* Previous node becomes the last node in the chain */
  
      *PreviousRnode = LastRnode;
      return (CurrentByteOffset);
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    RsDoResourceTemplate
   *
   * PARAMETERS:  Op        - Parent of a resource template list
   *
   * RETURN:      None. Sets input node to point to a list of AML code
   *
   * DESCRIPTION: Merge a list of resource descriptors into a single AML buffer,
   *              in preparation for output to the AML output file.
   *
   ******************************************************************************/
  
  void
  RsDoResourceTemplate (
      ACPI_PARSE_OBJECT       *Op)
  {
      ACPI_PARSE_OBJECT       *BufferLengthOp;
      ACPI_PARSE_OBJECT       *BufferOp;
      ACPI_PARSE_OBJECT       *DescriptorTypeOp;
      ACPI_PARSE_OBJECT       *LastOp = NULL;
      UINT32                  CurrentByteOffset = 0;
      ASL_RESOURCE_NODE       HeadRnode;
      ASL_RESOURCE_NODE       *PreviousRnode;
      ASL_RESOURCE_NODE       *Rnode;
      ASL_RESOURCE_INFO       Info;
      UINT8                   State;
  
  
      /* Mark parent as containing a resource template */
  
      if (Op->Asl.Parent)
      {
          Op->Asl.Parent->Asl.CompileFlags |= OP_IS_RESOURCE_DESC;
      }
  
      /* ResourceTemplate Opcode is first (Op) */
      /* Buffer Length node is first child */
  
      BufferLengthOp = ASL_GET_CHILD_NODE (Op);
  
      /* Buffer Op is first peer */
  
      BufferOp = ASL_GET_PEER_NODE (BufferLengthOp);
  
      /* First Descriptor type is next */
  
      DescriptorTypeOp = ASL_GET_PEER_NODE (BufferOp);
  
      /* DEFAULT_ARG indicates null template - ResourceTemplate(){} */
  
      if (DescriptorTypeOp->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
      {
          AslError (ASL_WARNING, ASL_MSG_NULL_RESOURCE_TEMPLATE,
              DescriptorTypeOp, DescriptorTypeOp->Asl.Value.String);
      }
  
      /*
       * Process all resource descriptors in the list
       * Note: It is assumed that the EndTag node has been automatically
       * inserted at the end of the template by the parser.
       */
      State = ACPI_RSTATE_NORMAL;
      PreviousRnode = &HeadRnode;
      while (DescriptorTypeOp)
      {
          /* Save information for optional mapfile */
  
          if (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_CONNECTION)
          {
              Info.MappingOp = Op->Asl.Parent;
          }
          else
          {
              Info.MappingOp = DescriptorTypeOp;
          }
  
          Info.DescriptorTypeOp = DescriptorTypeOp;
          Info.CurrentByteOffset = CurrentByteOffset;
  
          DescriptorTypeOp->Asl.CompileFlags |= OP_IS_RESOURCE_DESC;
          Rnode = RsDoOneResourceDescriptor (&Info, &State);
  
          /*
           * Update current byte offset to indicate the number of bytes from the
           * start of the buffer. Buffer can include multiple descriptors, we
           * must keep track of the offset of not only each descriptor, but each
           * element (field) within each descriptor as well.
           */
          CurrentByteOffset += RsLinkDescriptorChain (&PreviousRnode, Rnode);
  
          /* Get the next descriptor in the list */
  
          LastOp = DescriptorTypeOp;
          DescriptorTypeOp = ASL_GET_PEER_NODE (DescriptorTypeOp);
      }
  
      if (State == ACPI_RSTATE_DEPENDENT_LIST)
      {
          if (LastOp)
          {
              LastOp = LastOp->Asl.Parent;
          }
          AslError (ASL_ERROR, ASL_MSG_MISSING_ENDDEPENDENT, LastOp, NULL);
      }
  
      /*
       * Transform the nodes into the following
       *
       * Op           -> AML_BUFFER_OP
       * First Child  -> BufferLength
       * Second Child -> Descriptor Buffer (raw byte data)
       */
      Op->Asl.ParseOpcode               = PARSEOP_BUFFER;
      Op->Asl.AmlOpcode                 = AML_BUFFER_OP;
      Op->Asl.CompileFlags              = OP_AML_PACKAGE | OP_IS_RESOURCE_DESC;
      UtSetParseOpName (Op);
  
      BufferLengthOp->Asl.ParseOpcode   = PARSEOP_INTEGER;
      BufferLengthOp->Asl.Value.Integer = CurrentByteOffset;
      (void) OpcSetOptimalIntegerSize (BufferLengthOp);
      UtSetParseOpName (BufferLengthOp);
  
      BufferOp->Asl.ParseOpcode         = PARSEOP_RAW_DATA;
      BufferOp->Asl.AmlOpcode           = AML_RAW_DATA_CHAIN;
      BufferOp->Asl.AmlOpcodeLength     = 0;
      BufferOp->Asl.AmlLength           = CurrentByteOffset;
      BufferOp->Asl.Value.Buffer        = ACPI_CAST_PTR (UINT8,  HeadRnode.Next);
      BufferOp->Asl.CompileFlags       |= OP_IS_RESOURCE_DATA;
      UtSetParseOpName (BufferOp);
  
      return;
  }
  