/****************************************************************************** * * Module Name: dsopcode - Dispatcher support for regions and fields * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2018, 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 "acpi.h" #include "accommon.h" #include "acparser.h" #include "amlcode.h" #include "acdispat.h" #include "acinterp.h" #include "acnamesp.h" #include "acevents.h" #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_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)) { ACPI_ERROR ((AE_INFO, "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)); Status = AE_AML_BUFFER_LIMIT; 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; /* 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_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; /* 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); /* * 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)); /* 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; 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); }