FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/acpica/components/dispatcher/dsopcode.c

     /******************************************************************************
      *
      * Module Name: dsopcode - Dispatcher support for regions and fields
      *
      *****************************************************************************/
     
     /******************************************************************************
      *
      * 1. Copyright Notice
     *
     * Some or all of this work - Copyright (c) 1999 - 2022, 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 <contrib/dev/acpica/include/acpi.h>
   #include <contrib/dev/acpica/include/accommon.h>
   #include <contrib/dev/acpica/include/acparser.h>
   #include <contrib/dev/acpica/include/amlcode.h>
   #include <contrib/dev/acpica/include/acdispat.h>
   #include <contrib/dev/acpica/include/acinterp.h>
   #include <contrib/dev/acpica/include/acnamesp.h>
   #include <contrib/dev/acpica/include/acevents.h>
   #include <contrib/dev/acpica/include/actables.h>
   
   #define _COMPONENT          ACPI_DISPATCHER
           ACPI_MODULE_NAME    ("dsopcode")
   
   /* Local prototypes */
   
   static ACPI_STATUS
   AcpiDsInitBufferField (
       UINT16                  AmlOpcode,
       ACPI_OPERAND_OBJECT     *ObjDesc,
       ACPI_OPERAND_OBJECT     *BufferDesc,
       ACPI_OPERAND_OBJECT     *OffsetDesc,
       ACPI_OPERAND_OBJECT     *LengthDesc,
       ACPI_OPERAND_OBJECT     *ResultDesc);
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDsInitializeRegion
    *
    * PARAMETERS:  ObjHandle       - Region namespace node
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Front end to EvInitializeRegion
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiDsInitializeRegion (
       ACPI_HANDLE             ObjHandle)
   {
       ACPI_OPERAND_OBJECT     *ObjDesc;
       ACPI_STATUS             Status;
   
   
       ObjDesc = AcpiNsGetAttachedObject (ObjHandle);
   
       /* Namespace is NOT locked */
   
       Status = AcpiEvInitializeRegion (ObjDesc);
       return (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDsInitBufferField
    *
    * PARAMETERS:  AmlOpcode       - CreateXxxField
    *              ObjDesc         - BufferField object
    *              BufferDesc      - Host Buffer
    *              OffsetDesc      - Offset into buffer
    *              LengthDesc      - Length of field (CREATE_FIELD_OP only)
    *              ResultDesc      - Where to store the result
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Perform actual initialization of a buffer field
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   AcpiDsInitBufferField (
       UINT16                  AmlOpcode,
       ACPI_OPERAND_OBJECT     *ObjDesc,
       ACPI_OPERAND_OBJECT     *BufferDesc,
       ACPI_OPERAND_OBJECT     *OffsetDesc,
       ACPI_OPERAND_OBJECT     *LengthDesc,
       ACPI_OPERAND_OBJECT     *ResultDesc)
   {
       UINT32                  Offset;
       UINT32                  BitOffset;
       UINT32                  BitCount;
       UINT8                   FieldFlags;
       ACPI_STATUS             Status;
   
   
       ACPI_FUNCTION_TRACE_PTR (DsInitBufferField, ObjDesc);
   
   
       /* Host object must be a Buffer */
   
       if (BufferDesc->Common.Type != ACPI_TYPE_BUFFER)
       {
           ACPI_ERROR ((AE_INFO,
               "Target of Create Field is not a Buffer object - %s",
               AcpiUtGetObjectTypeName (BufferDesc)));
   
           Status = AE_AML_OPERAND_TYPE;
           goto Cleanup;
       }
   
       /*
        * The last parameter to all of these opcodes (ResultDesc) started
        * out as a NameString, and should therefore now be a NS node
        * after resolution in AcpiExResolveOperands().
        */
       if (ACPI_GET_DESCRIPTOR_TYPE (ResultDesc) != ACPI_DESC_TYPE_NAMED)
       {
           ACPI_ERROR ((AE_INFO,
               "(%s) destination not a NS Node [%s]",
               AcpiPsGetOpcodeName (AmlOpcode),
               AcpiUtGetDescriptorName (ResultDesc)));
   
           Status = AE_AML_OPERAND_TYPE;
           goto Cleanup;
       }
   
       Offset = (UINT32) OffsetDesc->Integer.Value;
   
       /*
        * Setup the Bit offsets and counts, according to the opcode
        */
       switch (AmlOpcode)
       {
       case AML_CREATE_FIELD_OP:
   
           /* Offset is in bits, count is in bits */
   
           FieldFlags = AML_FIELD_ACCESS_BYTE;
           BitOffset  = Offset;
           BitCount   = (UINT32) LengthDesc->Integer.Value;
   
           /* Must have a valid (>0) bit count */
   
           if (BitCount == 0)
           {
               ACPI_BIOS_ERROR ((AE_INFO,
                   "Attempt to CreateField of length zero"));
               Status = AE_AML_OPERAND_VALUE;
               goto Cleanup;
           }
           break;
   
       case AML_CREATE_BIT_FIELD_OP:
   
           /* Offset is in bits, Field is one bit */
   
           BitOffset  = Offset;
           BitCount   = 1;
           FieldFlags = AML_FIELD_ACCESS_BYTE;
           break;
   
       case AML_CREATE_BYTE_FIELD_OP:
   
           /* Offset is in bytes, field is one byte */
   
           BitOffset  = 8 * Offset;
           BitCount   = 8;
           FieldFlags = AML_FIELD_ACCESS_BYTE;
           break;
   
       case AML_CREATE_WORD_FIELD_OP:
   
           /* Offset is in bytes, field is one word */
   
           BitOffset  = 8 * Offset;
           BitCount   = 16;
           FieldFlags = AML_FIELD_ACCESS_WORD;
           break;
   
       case AML_CREATE_DWORD_FIELD_OP:
   
           /* Offset is in bytes, field is one dword */
   
           BitOffset  = 8 * Offset;
           BitCount   = 32;
           FieldFlags = AML_FIELD_ACCESS_DWORD;
           break;
   
       case AML_CREATE_QWORD_FIELD_OP:
   
           /* Offset is in bytes, field is one qword */
   
           BitOffset  = 8 * Offset;
           BitCount   = 64;
           FieldFlags = AML_FIELD_ACCESS_QWORD;
           break;
   
       default:
   
           ACPI_ERROR ((AE_INFO,
               "Unknown field creation opcode 0x%02X",
               AmlOpcode));
           Status = AE_AML_BAD_OPCODE;
           goto Cleanup;
       }
   
       /* Entire field must fit within the current length of the buffer */
   
       if ((BitOffset + BitCount) >
           (8 * (UINT32) BufferDesc->Buffer.Length))
       {
           Status = AE_AML_BUFFER_LIMIT;
           ACPI_BIOS_EXCEPTION ((AE_INFO, Status,
               "Field [%4.4s] at bit offset/length %u/%u "
               "exceeds size of target Buffer (%u bits)",
               AcpiUtGetNodeName (ResultDesc), BitOffset, BitCount,
               8 * (UINT32) BufferDesc->Buffer.Length));
           goto Cleanup;
       }
   
       /*
        * Initialize areas of the field object that are common to all fields
        * For FieldFlags, use LOCK_RULE = 0 (NO_LOCK),
        * UPDATE_RULE = 0 (UPDATE_PRESERVE)
        */
       Status = AcpiExPrepCommonFieldObject (
           ObjDesc, FieldFlags, 0, BitOffset, BitCount);
       if (ACPI_FAILURE (Status))
       {
           goto Cleanup;
       }
   
       ObjDesc->BufferField.BufferObj = BufferDesc;
       ObjDesc->BufferField.IsCreateField = AmlOpcode == AML_CREATE_FIELD_OP;
   
       /* Reference count for BufferDesc inherits ObjDesc count */
   
       BufferDesc->Common.ReferenceCount = (UINT16)
           (BufferDesc->Common.ReferenceCount + ObjDesc->Common.ReferenceCount);
   
   
   Cleanup:
   
       /* Always delete the operands */
   
       AcpiUtRemoveReference (OffsetDesc);
       AcpiUtRemoveReference (BufferDesc);
   
       if (AmlOpcode == AML_CREATE_FIELD_OP)
       {
           AcpiUtRemoveReference (LengthDesc);
       }
   
       /* On failure, delete the result descriptor */
   
       if (ACPI_FAILURE (Status))
       {
           AcpiUtRemoveReference (ResultDesc);     /* Result descriptor */
       }
       else
       {
           /* Now the address and length are valid for this BufferField */
   
           ObjDesc->BufferField.Flags |= AOPOBJ_DATA_VALID;
       }
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDsEvalBufferFieldOperands
    *
    * PARAMETERS:  WalkState       - Current walk
    *              Op              - A valid BufferField Op object
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Get BufferField Buffer and Index
    *              Called from AcpiDsExecEndOp during BufferField parse tree walk
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiDsEvalBufferFieldOperands (
       ACPI_WALK_STATE         *WalkState,
       ACPI_PARSE_OBJECT       *Op)
   {
       ACPI_STATUS             Status;
       ACPI_OPERAND_OBJECT     *ObjDesc;
       ACPI_NAMESPACE_NODE     *Node;
       ACPI_PARSE_OBJECT       *NextOp;
   
   
       ACPI_FUNCTION_TRACE_PTR (DsEvalBufferFieldOperands, Op);
   
   
       /*
        * This is where we evaluate the address and length fields of the
        * CreateXxxField declaration
        */
       Node =  Op->Common.Node;
   
       /* NextOp points to the op that holds the Buffer */
   
       NextOp = Op->Common.Value.Arg;
   
       /* Evaluate/create the address and length operands */
   
       Status = AcpiDsCreateOperands (WalkState, NextOp);
       if (ACPI_FAILURE (Status))
       {
           return_ACPI_STATUS (Status);
       }
   
       ObjDesc = AcpiNsGetAttachedObject (Node);
       if (!ObjDesc)
       {
           return_ACPI_STATUS (AE_NOT_EXIST);
       }
   
       /* Resolve the operands */
   
       Status = AcpiExResolveOperands (
           Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState);
       if (ACPI_FAILURE (Status))
       {
           ACPI_ERROR ((AE_INFO, "(%s) bad operand(s), status 0x%X",
               AcpiPsGetOpcodeName (Op->Common.AmlOpcode), Status));
   
           return_ACPI_STATUS (Status);
       }
   
       /* Initialize the Buffer Field */
   
       if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP)
       {
           /* NOTE: Slightly different operands for this opcode */
   
           Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
               WalkState->Operands[0], WalkState->Operands[1],
               WalkState->Operands[2], WalkState->Operands[3]);
       }
       else
       {
           /* All other, CreateXxxField opcodes */
   
           Status = AcpiDsInitBufferField (Op->Common.AmlOpcode, ObjDesc,
               WalkState->Operands[0], WalkState->Operands[1],
               NULL, WalkState->Operands[2]);
       }
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDsEvalRegionOperands
    *
    * PARAMETERS:  WalkState       - Current walk
    *              Op              - A valid region Op object
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Get region address and length
    *              Called from AcpiDsExecEndOp during OpRegion parse tree walk
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiDsEvalRegionOperands (
       ACPI_WALK_STATE         *WalkState,
       ACPI_PARSE_OBJECT       *Op)
   {
       ACPI_STATUS             Status;
       ACPI_OPERAND_OBJECT     *ObjDesc;
       ACPI_OPERAND_OBJECT     *OperandDesc;
       ACPI_NAMESPACE_NODE     *Node;
       ACPI_PARSE_OBJECT       *NextOp;
       ACPI_ADR_SPACE_TYPE     SpaceId;
   
   
       ACPI_FUNCTION_TRACE_PTR (DsEvalRegionOperands, Op);
   
   
       /*
        * This is where we evaluate the address and length fields of the
        * OpRegion declaration
        */
       Node = Op->Common.Node;
   
       /* NextOp points to the op that holds the SpaceID */
   
       NextOp = Op->Common.Value.Arg;
       SpaceId = (ACPI_ADR_SPACE_TYPE) NextOp->Common.Value.Integer;
   
       /* NextOp points to address op */
   
       NextOp = NextOp->Common.Next;
   
       /* Evaluate/create the address and length operands */
   
       Status = AcpiDsCreateOperands (WalkState, NextOp);
       if (ACPI_FAILURE (Status))
       {
           return_ACPI_STATUS (Status);
       }
   
       /* Resolve the length and address operands to numbers */
   
       Status = AcpiExResolveOperands (
           Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState);
       if (ACPI_FAILURE (Status))
       {
           return_ACPI_STATUS (Status);
       }
   
       ObjDesc = AcpiNsGetAttachedObject (Node);
       if (!ObjDesc)
       {
           return_ACPI_STATUS (AE_NOT_EXIST);
       }
   
       /*
        * Get the length operand and save it
        * (at Top of stack)
        */
       OperandDesc = WalkState->Operands[WalkState->NumOperands - 1];
   
       ObjDesc->Region.Length = (UINT32) OperandDesc->Integer.Value;
       AcpiUtRemoveReference (OperandDesc);
   
       /* A zero-length operation region is unusable. Just warn */
   
       if (!ObjDesc->Region.Length && (SpaceId < ACPI_NUM_PREDEFINED_REGIONS))
       {
           ACPI_WARNING ((AE_INFO,
               "Operation Region [%4.4s] has zero length (SpaceId %X)",
               Node->Name.Ascii, SpaceId));
       }
   
       /*
        * Get the address and save it
        * (at top of stack - 1)
        */
       OperandDesc = WalkState->Operands[WalkState->NumOperands - 2];
   
       ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS)
           OperandDesc->Integer.Value;
       AcpiUtRemoveReference (OperandDesc);
   
       ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
           ObjDesc, ACPI_FORMAT_UINT64 (ObjDesc->Region.Address),
           ObjDesc->Region.Length));
   
       Status = AcpiUtAddAddressRange (ObjDesc->Region.SpaceId,
           ObjDesc->Region.Address, ObjDesc->Region.Length, Node);
   
       /* Now the address and length are valid for this opregion */
   
       ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDsEvalTableRegionOperands
    *
    * PARAMETERS:  WalkState       - Current walk
    *              Op              - A valid region Op object
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Get region address and length.
    *              Called from AcpiDsExecEndOp during DataTableRegion parse
    *              tree walk.
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiDsEvalTableRegionOperands (
       ACPI_WALK_STATE         *WalkState,
       ACPI_PARSE_OBJECT       *Op)
   {
       ACPI_STATUS             Status;
       ACPI_OPERAND_OBJECT     *ObjDesc;
       ACPI_OPERAND_OBJECT     **Operand;
       ACPI_NAMESPACE_NODE     *Node;
       ACPI_PARSE_OBJECT       *NextOp;
       ACPI_TABLE_HEADER       *Table;
       UINT32                  TableIndex;
   
   
       ACPI_FUNCTION_TRACE_PTR (DsEvalTableRegionOperands, Op);
   
   
       /*
        * This is where we evaluate the Signature string, OemId string,
        * and OemTableId string of the Data Table Region declaration
        */
       Node =  Op->Common.Node;
   
       /* NextOp points to Signature string op */
   
       NextOp = Op->Common.Value.Arg;
   
       /*
        * Evaluate/create the Signature string, OemId string,
        * and OemTableId string operands
        */
       Status = AcpiDsCreateOperands (WalkState, NextOp);
       if (ACPI_FAILURE (Status))
       {
           return_ACPI_STATUS (Status);
       }
   
       Operand = &WalkState->Operands[0];
   
       /*
        * Resolve the Signature string, OemId string,
        * and OemTableId string operands
        */
       Status = AcpiExResolveOperands (
           Op->Common.AmlOpcode, ACPI_WALK_OPERANDS, WalkState);
       if (ACPI_FAILURE (Status))
       {
           goto Cleanup;
       }
   
       /* Find the ACPI table */
   
       Status = AcpiTbFindTable (
           Operand[0]->String.Pointer,
           Operand[1]->String.Pointer,
           Operand[2]->String.Pointer, &TableIndex);
       if (ACPI_FAILURE (Status))
       {
           if (Status == AE_NOT_FOUND)
           {
               ACPI_ERROR ((AE_INFO,
                   "ACPI Table [%4.4s] OEM:(%s, %s) not found in RSDT/XSDT",
                   Operand[0]->String.Pointer,
                   Operand[1]->String.Pointer,
                   Operand[2]->String.Pointer));
           }
           goto Cleanup;
       }
   
       Status = AcpiGetTableByIndex (TableIndex, &Table);
       if (ACPI_FAILURE (Status))
       {
           goto Cleanup;
       }
   
       ObjDesc = AcpiNsGetAttachedObject (Node);
       if (!ObjDesc)
       {
           Status = AE_NOT_EXIST;
           goto Cleanup;
       }
   
       ObjDesc->Region.Address = ACPI_PTR_TO_PHYSADDR (Table);
       ObjDesc->Region.Length = Table->Length;
       ObjDesc->Region.Pointer = Table;
   
       ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
           ObjDesc, ACPI_FORMAT_UINT64 (ObjDesc->Region.Address),
           ObjDesc->Region.Length));
   
       /* Now the address and length are valid for this opregion */
   
       ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;
   
   Cleanup:
       AcpiUtRemoveReference (Operand[0]);
       AcpiUtRemoveReference (Operand[1]);
       AcpiUtRemoveReference (Operand[2]);
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDsEvalDataObjectOperands
    *
    * PARAMETERS:  WalkState       - Current walk
    *              Op              - A valid DataObject Op object
    *              ObjDesc         - DataObject
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Get the operands and complete the following data object types:
    *              Buffer, Package.
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiDsEvalDataObjectOperands (
       ACPI_WALK_STATE         *WalkState,
       ACPI_PARSE_OBJECT       *Op,
       ACPI_OPERAND_OBJECT     *ObjDesc)
   {
       ACPI_STATUS             Status;
       ACPI_OPERAND_OBJECT     *ArgDesc;
       UINT32                  Length;
   
   
       ACPI_FUNCTION_TRACE (DsEvalDataObjectOperands);
   
   
       /* The first operand (for all of these data objects) is the length */
   
       /*
        * Set proper index into operand stack for AcpiDsObjStackPush
        * invoked inside AcpiDsCreateOperand.
        */
       WalkState->OperandIndex = WalkState->NumOperands;
   
       /* Ignore if child is not valid */
   
       if (!Op->Common.Value.Arg)
       {
           ACPI_ERROR ((AE_INFO,
               "Missing child while evaluating opcode %4.4X, Op %p",
               Op->Common.AmlOpcode, Op));
           return_ACPI_STATUS (AE_OK);
       }
   
       Status = AcpiDsCreateOperand (WalkState, Op->Common.Value.Arg, 1);
       if (ACPI_FAILURE (Status))
       {
           return_ACPI_STATUS (Status);
       }
   
       Status = AcpiExResolveOperands (WalkState->Opcode,
           &(WalkState->Operands [WalkState->NumOperands -1]),
           WalkState);
       if (ACPI_FAILURE (Status))
       {
           return_ACPI_STATUS (Status);
       }
   
       /* Extract length operand */
   
       ArgDesc = WalkState->Operands [WalkState->NumOperands - 1];
       Length = (UINT32) ArgDesc->Integer.Value;
   
       /* Cleanup for length operand */
   
       Status = AcpiDsObjStackPop (1, WalkState);
       if (ACPI_FAILURE (Status))
       {
           return_ACPI_STATUS (Status);
       }
   
       AcpiUtRemoveReference (ArgDesc);
   
       /*
        * Create the actual data object
        */
       switch (Op->Common.AmlOpcode)
       {
       case AML_BUFFER_OP:
   
           Status = AcpiDsBuildInternalBufferObj (
               WalkState, Op, Length, &ObjDesc);
           break;
   
       case AML_PACKAGE_OP:
       case AML_VARIABLE_PACKAGE_OP:
   
           Status = AcpiDsBuildInternalPackageObj (
               WalkState, Op, Length, &ObjDesc);
           break;
   
       default:
   
           return_ACPI_STATUS (AE_AML_BAD_OPCODE);
       }
   
       if (ACPI_SUCCESS (Status))
       {
           /*
            * Return the object in the WalkState, unless the parent is a package -
            * in this case, the return object will be stored in the parse tree
            * for the package.
            */
           if ((!Op->Common.Parent) ||
               ((Op->Common.Parent->Common.AmlOpcode != AML_PACKAGE_OP) &&
                (Op->Common.Parent->Common.AmlOpcode != AML_VARIABLE_PACKAGE_OP) &&
                (Op->Common.Parent->Common.AmlOpcode != AML_NAME_OP)))
           {
               WalkState->ResultObj = ObjDesc;
           }
       }
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDsEvalBankFieldOperands
    *
    * PARAMETERS:  WalkState       - Current walk
    *              Op              - A valid BankField Op object
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Get BankField BankValue
    *              Called from AcpiDsExecEndOp during BankField parse tree walk
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiDsEvalBankFieldOperands (
       ACPI_WALK_STATE         *WalkState,
       ACPI_PARSE_OBJECT       *Op)
   {
       ACPI_STATUS             Status;
       ACPI_OPERAND_OBJECT     *ObjDesc;
       ACPI_OPERAND_OBJECT     *OperandDesc;
       ACPI_NAMESPACE_NODE     *Node;
       ACPI_PARSE_OBJECT       *NextOp;
       ACPI_PARSE_OBJECT       *Arg;
   
   
       ACPI_FUNCTION_TRACE_PTR (DsEvalBankFieldOperands, Op);
   
   
       /*
        * This is where we evaluate the BankValue field of the
        * BankField declaration
        */
   
       /* NextOp points to the op that holds the Region */
   
       NextOp = Op->Common.Value.Arg;
   
       /* NextOp points to the op that holds the Bank Register */
   
       NextOp = NextOp->Common.Next;
   
       /* NextOp points to the op that holds the Bank Value */
   
       NextOp = NextOp->Common.Next;
   
       /*
        * Set proper index into operand stack for AcpiDsObjStackPush
        * invoked inside AcpiDsCreateOperand.
        *
        * We use WalkState->Operands[0] to store the evaluated BankValue
        */
       WalkState->OperandIndex = 0;
   
       Status = AcpiDsCreateOperand (WalkState, NextOp, 0);
       if (ACPI_FAILURE (Status))
       {
           return_ACPI_STATUS (Status);
       }
   
       Status = AcpiExResolveToValue (&WalkState->Operands[0], WalkState);
       if (ACPI_FAILURE (Status))
       {
           return_ACPI_STATUS (Status);
       }
   
       ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS,
           AcpiPsGetOpcodeName (Op->Common.AmlOpcode), 1);
       /*
        * Get the BankValue operand and save it
        * (at Top of stack)
        */
       OperandDesc = WalkState->Operands[0];
   
       /* Arg points to the start Bank Field */
   
       Arg = AcpiPsGetArg (Op, 4);
       while (Arg)
       {
           /* Ignore OFFSET and ACCESSAS terms here */
   
           if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
           {
               Node = Arg->Common.Node;
   
               ObjDesc = AcpiNsGetAttachedObject (Node);
               if (!ObjDesc)
               {
                   return_ACPI_STATUS (AE_NOT_EXIST);
               }
   
               ObjDesc->BankField.Value = (UINT32) OperandDesc->Integer.Value;
           }
   
           /* Move to next field in the list */
   
           Arg = Arg->Common.Next;
       }
   
       AcpiUtRemoveReference (OperandDesc);
       return_ACPI_STATUS (Status);
   }

Cache object: 77ec17394cdfd94cd1ffb045c22bd04d