FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/acpica/components/executer/exregion.c

     /******************************************************************************
      *
      * Module Name: exregion - ACPI default OpRegion (address space) handlers
      *
      *****************************************************************************/
     
     /******************************************************************************
      *
      * 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/acinterp.h>
   
   
   #define _COMPONENT          ACPI_EXECUTER
           ACPI_MODULE_NAME    ("exregion")
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiExSystemMemorySpaceHandler
    *
    * PARAMETERS:  Function            - Read or Write operation
    *              Address             - Where in the space to read or write
    *              BitWidth            - Field width in bits (8, 16, or 32)
    *              Value               - Pointer to in or out value
    *              HandlerContext      - Pointer to Handler's context
    *              RegionContext       - Pointer to context specific to the
    *                                    accessed region
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Handler for the System Memory address space (Op Region)
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiExSystemMemorySpaceHandler (
       UINT32                  Function,
       ACPI_PHYSICAL_ADDRESS   Address,
       UINT32                  BitWidth,
       UINT64                  *Value,
       void                    *HandlerContext,
       void                    *RegionContext)
   {
       ACPI_STATUS             Status = AE_OK;
       void                    *LogicalAddrPtr = NULL;
       ACPI_MEM_SPACE_CONTEXT  *MemInfo = RegionContext;
       ACPI_MEM_MAPPING        *Mm = MemInfo->CurMm;
       UINT32                  Length;
       ACPI_SIZE               MapLength;
       ACPI_SIZE               PageBoundaryMapLength;
   #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
       UINT32                  Remainder;
   #endif
   
   
       ACPI_FUNCTION_TRACE (ExSystemMemorySpaceHandler);
   
   
       /* Validate and translate the bit width */
   
       switch (BitWidth)
       {
       case 8:
   
           Length = 1;
           break;
   
       case 16:
   
           Length = 2;
           break;
   
       case 32:
   
           Length = 4;
           break;
   
       case 64:
   
           Length = 8;
           break;
   
       default:
   
           ACPI_ERROR ((AE_INFO, "Invalid SystemMemory width %u",
               BitWidth));
           return_ACPI_STATUS (AE_AML_OPERAND_VALUE);
       }
   
   #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
       /*
        * Hardware does not support non-aligned data transfers, we must verify
        * the request.
        */
       (void) AcpiUtShortDivide ((UINT64) Address, Length, NULL, &Remainder);
       if (Remainder != 0)
       {
           return_ACPI_STATUS (AE_AML_ALIGNMENT);
       }
   #endif
   
       /*
        * Does the request fit into the cached memory mapping?
        * Is 1) Address below the current mapping? OR
        *    2) Address beyond the current mapping?
        */
       if (!Mm || (Address < Mm->PhysicalAddress) ||
           ((UINT64) Address + Length > (UINT64) Mm->PhysicalAddress + Mm->Length))
       {
           /*
            * The request cannot be resolved by the current memory mapping.
            *
            * Look for an existing saved mapping covering the address range
            * at hand. If found, save it as the current one and carry out
            * the access.
            */
           for (Mm = MemInfo->FirstMm; Mm; Mm = Mm->NextMm)
           {
               if (Mm == MemInfo->CurMm)
               {
                   continue;
               }
   
               if (Address < Mm->PhysicalAddress)
               {
                   continue;
               }
   
               if ((UINT64) Address + Length > (UINT64) Mm->PhysicalAddress + Mm->Length)
               {
                   continue;
               }
   
               MemInfo->CurMm = Mm;
               goto access;
           }
   
           /* Create a new mappings list entry */
   
           Mm = ACPI_ALLOCATE_ZEROED(sizeof(*Mm));
           if (!Mm)
           {
               ACPI_ERROR((AE_INFO,
                   "Unable to save memory mapping at 0x%8.8X%8.8X, size %u",
                   ACPI_FORMAT_UINT64(Address), Length));
               return_ACPI_STATUS(AE_NO_MEMORY);
           }
   
           /*
            * October 2009: Attempt to map from the requested address to the
            * end of the region. However, we will never map more than one
            * page, nor will we cross a page boundary.
            */
           MapLength = (ACPI_SIZE)
               ((MemInfo->Address + MemInfo->Length) - Address);
   
           /*
            * If mapping the entire remaining portion of the region will cross
            * a page boundary, just map up to the page boundary, do not cross.
            * On some systems, crossing a page boundary while mapping regions
            * can cause warnings if the pages have different attributes
            * due to resource management.
            *
            * This has the added benefit of constraining a single mapping to
            * one page, which is similar to the original code that used a 4k
            * maximum window.
            */
           PageBoundaryMapLength = (ACPI_SIZE)
               (ACPI_ROUND_UP (Address, ACPI_DEFAULT_PAGE_SIZE) - Address);
           if (PageBoundaryMapLength == 0)
           {
               PageBoundaryMapLength = ACPI_DEFAULT_PAGE_SIZE;
           }
   
           if (MapLength > PageBoundaryMapLength)
           {
               MapLength = PageBoundaryMapLength;
           }
   
           /* Create a new mapping starting at the address given */
   
           LogicalAddrPtr = AcpiOsMapMemory(Address, MapLength);
           if (!LogicalAddrPtr)
           {
               ACPI_ERROR ((AE_INFO,
                   "Could not map memory at 0x%8.8X%8.8X, size %u",
                   ACPI_FORMAT_UINT64 (Address), (UINT32) MapLength));
               ACPI_FREE(Mm);
               return_ACPI_STATUS (AE_NO_MEMORY);
           }
   
           /* Save the physical address and mapping size */
   
           Mm->LogicalAddress = LogicalAddrPtr;
           Mm->PhysicalAddress = Address;
           Mm->Length = MapLength;
   
           /*
            * Add the new entry to the mappigs list and save it as the
            * current mapping.
            */
           Mm->NextMm = MemInfo->FirstMm;
           MemInfo->FirstMm = Mm;
           MemInfo->CurMm = Mm;
       }
   
   access:
       /*
        * Generate a logical pointer corresponding to the address we want to
        * access
        */
       LogicalAddrPtr = Mm->LogicalAddress +
           ((UINT64) Address - (UINT64) Mm->PhysicalAddress);
   
       ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
           "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n",
           BitWidth, Function, ACPI_FORMAT_UINT64 (Address)));
   
       /*
        * Perform the memory read or write
        *
        * Note: For machines that do not support non-aligned transfers, the target
        * address was checked for alignment above. We do not attempt to break the
        * transfer up into smaller (byte-size) chunks because the AML specifically
        * asked for a transfer width that the hardware may require.
        */
       switch (Function)
       {
       case ACPI_READ:
   
           *Value = 0;
           switch (BitWidth)
           {
           case 8:
   
               *Value = (UINT64) ACPI_GET8 (LogicalAddrPtr);
               break;
   
           case 16:
   
               *Value = (UINT64) ACPI_GET16 (LogicalAddrPtr);
               break;
   
           case 32:
   
               *Value = (UINT64) ACPI_GET32 (LogicalAddrPtr);
               break;
   
           case 64:
   
               *Value = (UINT64) ACPI_GET64 (LogicalAddrPtr);
               break;
   
           default:
   
               /* BitWidth was already validated */
   
               break;
           }
           break;
   
       case ACPI_WRITE:
   
           switch (BitWidth)
           {
           case 8:
   
               ACPI_SET8 (LogicalAddrPtr, *Value);
               break;
   
           case 16:
   
               ACPI_SET16 (LogicalAddrPtr, *Value);
               break;
   
           case 32:
   
               ACPI_SET32 (LogicalAddrPtr, *Value);
               break;
   
           case 64:
   
               ACPI_SET64 (LogicalAddrPtr, *Value);
               break;
   
           default:
   
               /* BitWidth was already validated */
   
               break;
           }
           break;
   
       default:
   
           Status = AE_BAD_PARAMETER;
           break;
       }
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiExSystemIoSpaceHandler
    *
    * PARAMETERS:  Function            - Read or Write operation
    *              Address             - Where in the space to read or write
    *              BitWidth            - Field width in bits (8, 16, or 32)
    *              Value               - Pointer to in or out value
    *              HandlerContext      - Pointer to Handler's context
    *              RegionContext       - Pointer to context specific to the
    *                                    accessed region
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Handler for the System IO address space (Op Region)
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiExSystemIoSpaceHandler (
       UINT32                  Function,
       ACPI_PHYSICAL_ADDRESS   Address,
       UINT32                  BitWidth,
       UINT64                  *Value,
       void                    *HandlerContext,
       void                    *RegionContext)
   {
       ACPI_STATUS             Status = AE_OK;
       UINT32                  Value32;
   
   
       ACPI_FUNCTION_TRACE (ExSystemIoSpaceHandler);
   
   
       ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
           "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n",
           BitWidth, Function, ACPI_FORMAT_UINT64 (Address)));
   
       /* Decode the function parameter */
   
       switch (Function)
       {
       case ACPI_READ:
   
           Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) Address,
                       &Value32, BitWidth);
           *Value = Value32;
           break;
   
       case ACPI_WRITE:
   
           Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) Address,
                       (UINT32) *Value, BitWidth);
           break;
   
       default:
   
           Status = AE_BAD_PARAMETER;
           break;
       }
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiExPciConfigSpaceHandler
    *
    * PARAMETERS:  Function            - Read or Write operation
    *              Address             - Where in the space to read or write
    *              BitWidth            - Field width in bits (8, 16, or 32)
    *              Value               - Pointer to in or out value
    *              HandlerContext      - Pointer to Handler's context
    *              RegionContext       - Pointer to context specific to the
    *                                    accessed region
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Handler for the PCI Config address space (Op Region)
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiExPciConfigSpaceHandler (
       UINT32                  Function,
       ACPI_PHYSICAL_ADDRESS   Address,
       UINT32                  BitWidth,
       UINT64                  *Value,
       void                    *HandlerContext,
       void                    *RegionContext)
   {
       ACPI_STATUS             Status = AE_OK;
       ACPI_PCI_ID             *PciId;
       UINT16                  PciRegister;
   
   
       ACPI_FUNCTION_TRACE (ExPciConfigSpaceHandler);
   
   
       /*
        *  The arguments to AcpiOs(Read|Write)PciConfiguration are:
        *
        *  PciSegment  is the PCI bus segment range 0-31
        *  PciBus      is the PCI bus number range 0-255
        *  PciDevice   is the PCI device number range 0-31
        *  PciFunction is the PCI device function number
        *  PciRegister is the Config space register range 0-255 bytes
        *
        *  Value - input value for write, output address for read
        *
        */
       PciId       = (ACPI_PCI_ID *) RegionContext;
       PciRegister = (UINT16) (UINT32) Address;
   
       ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
           "Pci-Config %u (%u) Seg(%04x) Bus(%04x) "
           "Dev(%04x) Func(%04x) Reg(%04x)\n",
           Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device,
           PciId->Function, PciRegister));
   
       switch (Function)
       {
       case ACPI_READ:
   
           *Value = 0;
           Status = AcpiOsReadPciConfiguration (
               PciId, PciRegister, Value, BitWidth);
           break;
   
       case ACPI_WRITE:
   
           Status = AcpiOsWritePciConfiguration (
               PciId, PciRegister, *Value, BitWidth);
           break;
   
       default:
   
           Status = AE_BAD_PARAMETER;
           break;
       }
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiExCmosSpaceHandler
    *
    * PARAMETERS:  Function            - Read or Write operation
    *              Address             - Where in the space to read or write
    *              BitWidth            - Field width in bits (8, 16, or 32)
    *              Value               - Pointer to in or out value
    *              HandlerContext      - Pointer to Handler's context
    *              RegionContext       - Pointer to context specific to the
    *                                    accessed region
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Handler for the CMOS address space (Op Region)
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiExCmosSpaceHandler (
       UINT32                  Function,
       ACPI_PHYSICAL_ADDRESS   Address,
       UINT32                  BitWidth,
       UINT64                  *Value,
       void                    *HandlerContext,
       void                    *RegionContext)
   {
       ACPI_STATUS             Status = AE_OK;
   
   
       ACPI_FUNCTION_TRACE (ExCmosSpaceHandler);
   
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiExPciBarSpaceHandler
    *
    * PARAMETERS:  Function            - Read or Write operation
    *              Address             - Where in the space to read or write
    *              BitWidth            - Field width in bits (8, 16, or 32)
    *              Value               - Pointer to in or out value
    *              HandlerContext      - Pointer to Handler's context
    *              RegionContext       - Pointer to context specific to the
    *                                    accessed region
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Handler for the PCI BarTarget address space (Op Region)
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiExPciBarSpaceHandler (
       UINT32                  Function,
       ACPI_PHYSICAL_ADDRESS   Address,
       UINT32                  BitWidth,
       UINT64                  *Value,
       void                    *HandlerContext,
       void                    *RegionContext)
   {
       ACPI_STATUS             Status = AE_OK;
   
   
       ACPI_FUNCTION_TRACE (ExPciBarSpaceHandler);
   
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiExDataTableSpaceHandler
    *
    * PARAMETERS:  Function            - Read or Write operation
    *              Address             - Where in the space to read or write
    *              BitWidth            - Field width in bits (8, 16, or 32)
    *              Value               - Pointer to in or out value
    *              HandlerContext      - Pointer to Handler's context
    *              RegionContext       - Pointer to context specific to the
    *                                    accessed region
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Handler for the Data Table address space (Op Region)
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiExDataTableSpaceHandler (
       UINT32                  Function,
       ACPI_PHYSICAL_ADDRESS   Address,
       UINT32                  BitWidth,
       UINT64                  *Value,
       void                    *HandlerContext,
       void                    *RegionContext)
   {
       ACPI_DATA_TABLE_MAPPING *Mapping;
       char                    *Pointer;
   
   
       ACPI_FUNCTION_TRACE (ExDataTableSpaceHandler);
   
   
       Mapping = (ACPI_DATA_TABLE_MAPPING *) RegionContext;
       Pointer = ACPI_CAST_PTR (char, Mapping->Pointer) +
           (Address - ACPI_PTR_TO_PHYSADDR (Mapping->Pointer));
   
       /*
        * Perform the memory read or write. The BitWidth was already
        * validated.
        */
       switch (Function)
       {
       case ACPI_READ:
   
           memcpy (ACPI_CAST_PTR (char, Value), Pointer, ACPI_DIV_8 (BitWidth));
           break;
   
       case ACPI_WRITE:
   
           memcpy (Pointer, ACPI_CAST_PTR (char, Value), ACPI_DIV_8 (BitWidth));
           break;
   
       default:
   
           return_ACPI_STATUS (AE_BAD_PARAMETER);
       }
   
       return_ACPI_STATUS (AE_OK);
   }

Cache object: 207a0029c91a736f652e0865cd38bc77