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Diffstat (limited to 'sys/contrib/dev/acpica/exprep.c')
| -rw-r--r-- | sys/contrib/dev/acpica/exprep.c | 675 |
1 files changed, 0 insertions, 675 deletions
diff --git a/sys/contrib/dev/acpica/exprep.c b/sys/contrib/dev/acpica/exprep.c deleted file mode 100644 index b67db31..0000000 --- a/sys/contrib/dev/acpica/exprep.c +++ /dev/null @@ -1,675 +0,0 @@ - -/****************************************************************************** - * - * Module Name: exprep - ACPI AML (p-code) execution - field prep utilities - * $Revision: 1.142 $ - * - *****************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2007, Intel Corp. - * All rights reserved. - * - * 2. License - * - * 2.1. This is your license from Intel Corp. under its intellectual property - * rights. You may have additional license terms from the party that provided - * you this software, covering your right to use that party's intellectual - * property rights. - * - * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a - * copy of the source code appearing in this file ("Covered Code") an - * irrevocable, perpetual, worldwide license under Intel's copyrights in the - * base code distributed originally by Intel ("Original Intel Code") to copy, - * make derivatives, distribute, use and display any portion of the Covered - * Code in any form, with the right to sublicense such rights; and - * - * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent - * license (with the right to sublicense), under only those claims of Intel - * patents that are infringed by the Original Intel Code, to make, use, sell, - * offer to sell, and import the Covered Code and derivative works thereof - * solely to the minimum extent necessary to exercise the above copyright - * license, and in no event shall the patent license extend to any additions - * to or modifications of the Original Intel Code. No other license or right - * is granted directly or by implication, estoppel or otherwise; - * - * The above copyright and patent license is granted only if the following - * conditions are met: - * - * 3. Conditions - * - * 3.1. Redistribution of Source with Rights to Further Distribute Source. - * Redistribution of source code of any substantial portion of the Covered - * Code or modification with rights to further distribute source must include - * the above Copyright Notice, the above License, this list of Conditions, - * and the following Disclaimer and Export Compliance provision. In addition, - * Licensee must cause all Covered Code to which Licensee contributes to - * contain a file documenting the changes Licensee made to create that Covered - * Code and the date of any change. Licensee must include in that file the - * documentation of any changes made by any predecessor Licensee. Licensee - * must include a prominent statement that the modification is derived, - * directly or indirectly, from Original Intel Code. - * - * 3.2. Redistribution of Source with no Rights to Further Distribute Source. - * Redistribution of source code of any substantial portion of the Covered - * Code or modification without rights to further distribute source must - * include the following Disclaimer and Export Compliance provision in the - * documentation and/or other materials provided with distribution. In - * addition, Licensee may not authorize further sublicense of source of any - * portion of the Covered Code, and must include terms to the effect that the - * license from Licensee to its licensee is limited to the intellectual - * property embodied in the software Licensee provides to its licensee, and - * not to intellectual property embodied in modifications its licensee may - * make. - * - * 3.3. Redistribution of Executable. Redistribution in executable form of any - * substantial portion of the Covered Code or modification must reproduce the - * above Copyright Notice, and the following Disclaimer and Export Compliance - * provision in the documentation and/or other materials provided with the - * distribution. - * - * 3.4. Intel retains all right, title, and interest in and to the Original - * Intel Code. - * - * 3.5. Neither the name Intel nor any other trademark owned or controlled by - * Intel shall be used in advertising or otherwise to promote the sale, use or - * other dealings in products derived from or relating to the Covered Code - * without prior written authorization from Intel. - * - * 4. Disclaimer and Export Compliance - * - * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED - * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE - * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, - * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY - * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY - * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A - * PARTICULAR PURPOSE. - * - * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES - * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR - * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, - * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY - * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL - * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS - * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY - * LIMITED REMEDY. - * - * 4.3. Licensee shall not export, either directly or indirectly, any of this - * software or system incorporating such software without first obtaining any - * required license or other approval from the U. S. Department of Commerce or - * any other agency or department of the United States Government. In the - * event Licensee exports any such software from the United States or - * re-exports any such software from a foreign destination, Licensee shall - * ensure that the distribution and export/re-export of the software is in - * compliance with all laws, regulations, orders, or other restrictions of the - * U.S. Export Administration Regulations. Licensee agrees that neither it nor - * any of its subsidiaries will export/re-export any technical data, process, - * software, or service, directly or indirectly, to any country for which the - * United States government or any agency thereof requires an export license, - * other governmental approval, or letter of assurance, without first obtaining - * such license, approval or letter. - * - *****************************************************************************/ - -#define __EXPREP_C__ - -#include <contrib/dev/acpica/acpi.h> -#include <contrib/dev/acpica/acinterp.h> -#include <contrib/dev/acpica/amlcode.h> -#include <contrib/dev/acpica/acnamesp.h> - - -#define _COMPONENT ACPI_EXECUTER - ACPI_MODULE_NAME ("exprep") - -/* Local prototypes */ - -static UINT32 -AcpiExDecodeFieldAccess ( - ACPI_OPERAND_OBJECT *ObjDesc, - UINT8 FieldFlags, - UINT32 *ReturnByteAlignment); - - -#ifdef ACPI_UNDER_DEVELOPMENT - -static UINT32 -AcpiExGenerateAccess ( - UINT32 FieldBitOffset, - UINT32 FieldBitLength, - UINT32 RegionLength); - -/******************************************************************************* - * - * FUNCTION: AcpiExGenerateAccess - * - * PARAMETERS: FieldBitOffset - Start of field within parent region/buffer - * FieldBitLength - Length of field in bits - * RegionLength - Length of parent in bytes - * - * RETURN: Field granularity (8, 16, 32 or 64) and - * ByteAlignment (1, 2, 3, or 4) - * - * DESCRIPTION: Generate an optimal access width for fields defined with the - * AnyAcc keyword. - * - * NOTE: Need to have the RegionLength in order to check for boundary - * conditions (end-of-region). However, the RegionLength is a deferred - * operation. Therefore, to complete this implementation, the generation - * of this access width must be deferred until the region length has - * been evaluated. - * - ******************************************************************************/ - -static UINT32 -AcpiExGenerateAccess ( - UINT32 FieldBitOffset, - UINT32 FieldBitLength, - UINT32 RegionLength) -{ - UINT32 FieldByteLength; - UINT32 FieldByteOffset; - UINT32 FieldByteEndOffset; - UINT32 AccessByteWidth; - UINT32 FieldStartOffset; - UINT32 FieldEndOffset; - UINT32 MinimumAccessWidth = 0xFFFFFFFF; - UINT32 MinimumAccesses = 0xFFFFFFFF; - UINT32 Accesses; - - - ACPI_FUNCTION_TRACE (ExGenerateAccess); - - - /* Round Field start offset and length to "minimal" byte boundaries */ - - FieldByteOffset = ACPI_DIV_8 (ACPI_ROUND_DOWN (FieldBitOffset, 8)); - FieldByteEndOffset = ACPI_DIV_8 (ACPI_ROUND_UP (FieldBitLength + - FieldBitOffset, 8)); - FieldByteLength = FieldByteEndOffset - FieldByteOffset; - - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "Bit length %d, Bit offset %d\n", - FieldBitLength, FieldBitOffset)); - - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "Byte Length %d, Byte Offset %d, End Offset %d\n", - FieldByteLength, FieldByteOffset, FieldByteEndOffset)); - - /* - * Iterative search for the maximum access width that is both aligned - * and does not go beyond the end of the region - * - * Start at ByteAcc and work upwards to QwordAcc max. (1,2,4,8 bytes) - */ - for (AccessByteWidth = 1; AccessByteWidth <= 8; AccessByteWidth <<= 1) - { - /* - * 1) Round end offset up to next access boundary and make sure that - * this does not go beyond the end of the parent region. - * 2) When the Access width is greater than the FieldByteLength, we - * are done. (This does not optimize for the perfectly aligned - * case yet). - */ - if (ACPI_ROUND_UP (FieldByteEndOffset, AccessByteWidth) <= RegionLength) - { - FieldStartOffset = - ACPI_ROUND_DOWN (FieldByteOffset, AccessByteWidth) / - AccessByteWidth; - - FieldEndOffset = - ACPI_ROUND_UP ((FieldByteLength + FieldByteOffset), - AccessByteWidth) / AccessByteWidth; - - Accesses = FieldEndOffset - FieldStartOffset; - - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "AccessWidth %d end is within region\n", AccessByteWidth)); - - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "Field Start %d, Field End %d -- requires %d accesses\n", - FieldStartOffset, FieldEndOffset, Accesses)); - - /* Single access is optimal */ - - if (Accesses <= 1) - { - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "Entire field can be accessed with one operation of size %d\n", - AccessByteWidth)); - return_VALUE (AccessByteWidth); - } - - /* - * Fits in the region, but requires more than one read/write. - * try the next wider access on next iteration - */ - if (Accesses < MinimumAccesses) - { - MinimumAccesses = Accesses; - MinimumAccessWidth = AccessByteWidth; - } - } - else - { - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "AccessWidth %d end is NOT within region\n", AccessByteWidth)); - if (AccessByteWidth == 1) - { - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "Field goes beyond end-of-region!\n")); - - /* Field does not fit in the region at all */ - - return_VALUE (0); - } - - /* - * This width goes beyond the end-of-region, back off to - * previous access - */ - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "Backing off to previous optimal access width of %d\n", - MinimumAccessWidth)); - return_VALUE (MinimumAccessWidth); - } - } - - /* - * Could not read/write field with one operation, - * just use max access width - */ - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "Cannot access field in one operation, using width 8\n")); - return_VALUE (8); -} -#endif /* ACPI_UNDER_DEVELOPMENT */ - - -/******************************************************************************* - * - * FUNCTION: AcpiExDecodeFieldAccess - * - * PARAMETERS: ObjDesc - Field object - * FieldFlags - Encoded fieldflags (contains access bits) - * ReturnByteAlignment - Where the byte alignment is returned - * - * RETURN: Field granularity (8, 16, 32 or 64) and - * ByteAlignment (1, 2, 3, or 4) - * - * DESCRIPTION: Decode the AccessType bits of a field definition. - * - ******************************************************************************/ - -static UINT32 -AcpiExDecodeFieldAccess ( - ACPI_OPERAND_OBJECT *ObjDesc, - UINT8 FieldFlags, - UINT32 *ReturnByteAlignment) -{ - UINT32 Access; - UINT32 ByteAlignment; - UINT32 BitLength; - - - ACPI_FUNCTION_TRACE (ExDecodeFieldAccess); - - - Access = (FieldFlags & AML_FIELD_ACCESS_TYPE_MASK); - - switch (Access) - { - case AML_FIELD_ACCESS_ANY: - -#ifdef ACPI_UNDER_DEVELOPMENT - ByteAlignment = - AcpiExGenerateAccess (ObjDesc->CommonField.StartFieldBitOffset, - ObjDesc->CommonField.BitLength, - 0xFFFFFFFF /* Temp until we pass RegionLength as parameter */); - BitLength = ByteAlignment * 8; -#endif - - ByteAlignment = 1; - BitLength = 8; - break; - - case AML_FIELD_ACCESS_BYTE: - case AML_FIELD_ACCESS_BUFFER: /* ACPI 2.0 (SMBus Buffer) */ - ByteAlignment = 1; - BitLength = 8; - break; - - case AML_FIELD_ACCESS_WORD: - ByteAlignment = 2; - BitLength = 16; - break; - - case AML_FIELD_ACCESS_DWORD: - ByteAlignment = 4; - BitLength = 32; - break; - - case AML_FIELD_ACCESS_QWORD: /* ACPI 2.0 */ - ByteAlignment = 8; - BitLength = 64; - break; - - default: - /* Invalid field access type */ - - ACPI_ERROR ((AE_INFO, - "Unknown field access type %X", - Access)); - return_UINT32 (0); - } - - if (ACPI_GET_OBJECT_TYPE (ObjDesc) == ACPI_TYPE_BUFFER_FIELD) - { - /* - * BufferField access can be on any byte boundary, so the - * ByteAlignment is always 1 byte -- regardless of any ByteAlignment - * implied by the field access type. - */ - ByteAlignment = 1; - } - - *ReturnByteAlignment = ByteAlignment; - return_UINT32 (BitLength); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiExPrepCommonFieldObject - * - * PARAMETERS: ObjDesc - The field object - * FieldFlags - Access, LockRule, and UpdateRule. - * The format of a FieldFlag is described - * in the ACPI specification - * FieldAttribute - Special attributes (not used) - * FieldBitPosition - Field start position - * FieldBitLength - Field length in number of bits - * - * RETURN: Status - * - * DESCRIPTION: Initialize the areas of the field object that are common - * to the various types of fields. Note: This is very "sensitive" - * code because we are solving the general case for field - * alignment. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiExPrepCommonFieldObject ( - ACPI_OPERAND_OBJECT *ObjDesc, - UINT8 FieldFlags, - UINT8 FieldAttribute, - UINT32 FieldBitPosition, - UINT32 FieldBitLength) -{ - UINT32 AccessBitWidth; - UINT32 ByteAlignment; - UINT32 NearestByteAddress; - - - ACPI_FUNCTION_TRACE (ExPrepCommonFieldObject); - - - /* - * Note: the structure being initialized is the - * ACPI_COMMON_FIELD_INFO; No structure fields outside of the common - * area are initialized by this procedure. - */ - ObjDesc->CommonField.FieldFlags = FieldFlags; - ObjDesc->CommonField.Attribute = FieldAttribute; - ObjDesc->CommonField.BitLength = FieldBitLength; - - /* - * Decode the access type so we can compute offsets. The access type gives - * two pieces of information - the width of each field access and the - * necessary ByteAlignment (address granularity) of the access. - * - * For AnyAcc, the AccessBitWidth is the largest width that is both - * necessary and possible in an attempt to access the whole field in one - * I/O operation. However, for AnyAcc, the ByteAlignment is always one - * byte. - * - * For all Buffer Fields, the ByteAlignment is always one byte. - * - * For all other access types (Byte, Word, Dword, Qword), the Bitwidth is - * the same (equivalent) as the ByteAlignment. - */ - AccessBitWidth = AcpiExDecodeFieldAccess (ObjDesc, FieldFlags, - &ByteAlignment); - if (!AccessBitWidth) - { - return_ACPI_STATUS (AE_AML_OPERAND_VALUE); - } - - /* Setup width (access granularity) fields */ - - ObjDesc->CommonField.AccessByteWidth = (UINT8) - ACPI_DIV_8 (AccessBitWidth); /* 1, 2, 4, 8 */ - - ObjDesc->CommonField.AccessBitWidth = (UINT8) AccessBitWidth; - - /* - * BaseByteOffset is the address of the start of the field within the - * region. It is the byte address of the first *datum* (field-width data - * unit) of the field. (i.e., the first datum that contains at least the - * first *bit* of the field.) - * - * Note: ByteAlignment is always either equal to the AccessBitWidth or 8 - * (Byte access), and it defines the addressing granularity of the parent - * region or buffer. - */ - NearestByteAddress = - ACPI_ROUND_BITS_DOWN_TO_BYTES (FieldBitPosition); - ObjDesc->CommonField.BaseByteOffset = (UINT32) - ACPI_ROUND_DOWN (NearestByteAddress, ByteAlignment); - - /* - * StartFieldBitOffset is the offset of the first bit of the field within - * a field datum. - */ - ObjDesc->CommonField.StartFieldBitOffset = (UINT8) - (FieldBitPosition - ACPI_MUL_8 (ObjDesc->CommonField.BaseByteOffset)); - - /* - * Does the entire field fit within a single field access element? (datum) - * (i.e., without crossing a datum boundary) - */ - if ((ObjDesc->CommonField.StartFieldBitOffset + FieldBitLength) <= - (UINT16) AccessBitWidth) - { - ObjDesc->Common.Flags |= AOPOBJ_SINGLE_DATUM; - } - - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiExPrepFieldValue - * - * PARAMETERS: Info - Contains all field creation info - * - * RETURN: Status - * - * DESCRIPTION: Construct an ACPI_OPERAND_OBJECT of type DefField and - * connect it to the parent Node. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiExPrepFieldValue ( - ACPI_CREATE_FIELD_INFO *Info) -{ - ACPI_OPERAND_OBJECT *ObjDesc; - UINT32 Type; - ACPI_STATUS Status; - - - ACPI_FUNCTION_TRACE (ExPrepFieldValue); - - - /* Parameter validation */ - - if (Info->FieldType != ACPI_TYPE_LOCAL_INDEX_FIELD) - { - if (!Info->RegionNode) - { - ACPI_ERROR ((AE_INFO, "Null RegionNode")); - return_ACPI_STATUS (AE_AML_NO_OPERAND); - } - - Type = AcpiNsGetType (Info->RegionNode); - if (Type != ACPI_TYPE_REGION) - { - ACPI_ERROR ((AE_INFO, - "Needed Region, found type %X (%s)", - Type, AcpiUtGetTypeName (Type))); - - return_ACPI_STATUS (AE_AML_OPERAND_TYPE); - } - } - - /* Allocate a new field object */ - - ObjDesc = AcpiUtCreateInternalObject (Info->FieldType); - if (!ObjDesc) - { - return_ACPI_STATUS (AE_NO_MEMORY); - } - - /* Initialize areas of the object that are common to all fields */ - - ObjDesc->CommonField.Node = Info->FieldNode; - Status = AcpiExPrepCommonFieldObject (ObjDesc, Info->FieldFlags, - Info->Attribute, Info->FieldBitPosition, Info->FieldBitLength); - if (ACPI_FAILURE (Status)) - { - AcpiUtDeleteObjectDesc (ObjDesc); - return_ACPI_STATUS (Status); - } - - /* Initialize areas of the object that are specific to the field type */ - - switch (Info->FieldType) - { - case ACPI_TYPE_LOCAL_REGION_FIELD: - - ObjDesc->Field.RegionObj = AcpiNsGetAttachedObject (Info->RegionNode); - - /* An additional reference for the container */ - - AcpiUtAddReference (ObjDesc->Field.RegionObj); - - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "RegionField: BitOff %X, Off %X, Gran %X, Region %p\n", - ObjDesc->Field.StartFieldBitOffset, ObjDesc->Field.BaseByteOffset, - ObjDesc->Field.AccessByteWidth, ObjDesc->Field.RegionObj)); - break; - - - case ACPI_TYPE_LOCAL_BANK_FIELD: - - ObjDesc->BankField.Value = Info->BankValue; - ObjDesc->BankField.RegionObj = AcpiNsGetAttachedObject ( - Info->RegionNode); - ObjDesc->BankField.BankObj = AcpiNsGetAttachedObject ( - Info->RegisterNode); - - /* An additional reference for the attached objects */ - - AcpiUtAddReference (ObjDesc->BankField.RegionObj); - AcpiUtAddReference (ObjDesc->BankField.BankObj); - - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "Bank Field: BitOff %X, Off %X, Gran %X, Region %p, BankReg %p\n", - ObjDesc->BankField.StartFieldBitOffset, - ObjDesc->BankField.BaseByteOffset, - ObjDesc->Field.AccessByteWidth, - ObjDesc->BankField.RegionObj, - ObjDesc->BankField.BankObj)); - break; - - - case ACPI_TYPE_LOCAL_INDEX_FIELD: - - /* Get the Index and Data registers */ - - ObjDesc->IndexField.IndexObj = AcpiNsGetAttachedObject ( - Info->RegisterNode); - ObjDesc->IndexField.DataObj = AcpiNsGetAttachedObject ( - Info->DataRegisterNode); - - if (!ObjDesc->IndexField.DataObj || !ObjDesc->IndexField.IndexObj) - { - ACPI_ERROR ((AE_INFO, "Null Index Object during field prep")); - AcpiUtDeleteObjectDesc (ObjDesc); - return_ACPI_STATUS (AE_AML_INTERNAL); - } - - /* An additional reference for the attached objects */ - - AcpiUtAddReference (ObjDesc->IndexField.DataObj); - AcpiUtAddReference (ObjDesc->IndexField.IndexObj); - - /* - * April 2006: Changed to match MS behavior - * - * The value written to the Index register is the byte offset of the - * target field in units of the granularity of the IndexField - * - * Previously, the value was calculated as an index in terms of the - * width of the Data register, as below: - * - * ObjDesc->IndexField.Value = (UINT32) - * (Info->FieldBitPosition / ACPI_MUL_8 ( - * ObjDesc->Field.AccessByteWidth)); - * - * February 2006: Tried value as a byte offset: - * ObjDesc->IndexField.Value = (UINT32) - * ACPI_DIV_8 (Info->FieldBitPosition); - */ - ObjDesc->IndexField.Value = (UINT32) ACPI_ROUND_DOWN ( - ACPI_DIV_8 (Info->FieldBitPosition), - ObjDesc->IndexField.AccessByteWidth); - - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "IndexField: BitOff %X, Off %X, Value %X, Gran %X, Index %p, Data %p\n", - ObjDesc->IndexField.StartFieldBitOffset, - ObjDesc->IndexField.BaseByteOffset, - ObjDesc->IndexField.Value, - ObjDesc->Field.AccessByteWidth, - ObjDesc->IndexField.IndexObj, - ObjDesc->IndexField.DataObj)); - break; - - default: - /* No other types should get here */ - break; - } - - /* - * Store the constructed descriptor (ObjDesc) into the parent Node, - * preserving the current type of that NamedObj. - */ - Status = AcpiNsAttachObject (Info->FieldNode, ObjDesc, - AcpiNsGetType (Info->FieldNode)); - - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "Set NamedObj %p [%4.4s], ObjDesc %p\n", - Info->FieldNode, AcpiUtGetNodeName (Info->FieldNode), ObjDesc)); - - /* Remove local reference to the object */ - - AcpiUtRemoveReference (ObjDesc); - return_ACPI_STATUS (Status); -} - |
