/****************************************************************************** * * Module Name: dsfield - Dispatcher field routines * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2021, 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 "amlcode.h" #include "acdispat.h" #include "acinterp.h" #include "acnamesp.h" #include "acparser.h" #ifdef ACPI_EXEC_APP #include "aecommon.h" #endif #define _COMPONENT ACPI_DISPATCHER ACPI_MODULE_NAME ("dsfield") /* Local prototypes */ #ifdef ACPI_ASL_COMPILER #include "acdisasm.h" static ACPI_STATUS AcpiDsCreateExternalRegion ( ACPI_STATUS LookupStatus, ACPI_PARSE_OBJECT *Op, char *Path, ACPI_WALK_STATE *WalkState, ACPI_NAMESPACE_NODE **Node); #endif static ACPI_STATUS AcpiDsGetFieldNames ( ACPI_CREATE_FIELD_INFO *Info, ACPI_WALK_STATE *WalkState, ACPI_PARSE_OBJECT *Arg); #ifdef ACPI_ASL_COMPILER /******************************************************************************* * * FUNCTION: AcpiDsCreateExternalRegion (iASL Disassembler only) * * PARAMETERS: LookupStatus - Status from NsLookup operation * Op - Op containing the Field definition and args * Path - Pathname of the region * ` WalkState - Current method state * Node - Where the new region node is returned * * RETURN: Status * * DESCRIPTION: Add region to the external list if NOT_FOUND. Create a new * region node/object. * ******************************************************************************/ static ACPI_STATUS AcpiDsCreateExternalRegion ( ACPI_STATUS LookupStatus, ACPI_PARSE_OBJECT *Op, char *Path, ACPI_WALK_STATE *WalkState, ACPI_NAMESPACE_NODE **Node) { ACPI_STATUS Status; ACPI_OPERAND_OBJECT *ObjDesc; if (LookupStatus != AE_NOT_FOUND) { return (LookupStatus); } /* * Table disassembly: * OperationRegion not found. Generate an External for it, and * insert the name into the namespace. */ AcpiDmAddOpToExternalList (Op, Path, ACPI_TYPE_REGION, 0, 0); Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_REGION, ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT, WalkState, Node); if (ACPI_FAILURE (Status)) { return (Status); } /* Must create and install a region object for the new node */ ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION); if (!ObjDesc) { return (AE_NO_MEMORY); } ObjDesc->Region.Node = *Node; Status = AcpiNsAttachObject (*Node, ObjDesc, ACPI_TYPE_REGION); return (Status); } #endif /******************************************************************************* * * FUNCTION: AcpiDsCreateBufferField * * PARAMETERS: Op - Current parse op (CreateXXField) * WalkState - Current state * * RETURN: Status * * DESCRIPTION: Execute the CreateField operators: * CreateBitFieldOp, * CreateByteFieldOp, * CreateWordFieldOp, * CreateDwordFieldOp, * CreateQwordFieldOp, * CreateFieldOp (all of which define a field in a buffer) * ******************************************************************************/ ACPI_STATUS AcpiDsCreateBufferField ( ACPI_PARSE_OBJECT *Op, ACPI_WALK_STATE *WalkState) { ACPI_PARSE_OBJECT *Arg; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_OPERAND_OBJECT *SecondDesc = NULL; UINT32 Flags; ACPI_FUNCTION_TRACE (DsCreateBufferField); /* * Get the NameString argument (name of the new BufferField) */ if (Op->Common.AmlOpcode == AML_CREATE_FIELD_OP) { /* For CreateField, name is the 4th argument */ Arg = AcpiPsGetArg (Op, 3); } else { /* For all other CreateXXXField operators, name is the 3rd argument */ Arg = AcpiPsGetArg (Op, 2); } if (!Arg) { return_ACPI_STATUS (AE_AML_NO_OPERAND); } if (WalkState->DeferredNode) { Node = WalkState->DeferredNode; } else { /* Execute flag should always be set when this function is entered */ if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE)) { ACPI_ERROR ((AE_INFO, "Parse execute mode is not set")); return_ACPI_STATUS (AE_AML_INTERNAL); } /* Creating new namespace node, should not already exist */ Flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND; /* * Mark node temporary if we are executing a normal control * method. (Don't mark if this is a module-level code method) */ if (WalkState->MethodNode && !(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) { Flags |= ACPI_NS_TEMPORARY; } /* Enter the NameString into the namespace */ Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node); if ((WalkState->ParseFlags & ACPI_PARSE_DISASSEMBLE) && Status == AE_ALREADY_EXISTS) { Status = AE_OK; } else if (ACPI_FAILURE (Status)) { ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, Arg->Common.Value.String, Status); return_ACPI_STATUS (Status); } } /* * We could put the returned object (Node) on the object stack for later, * but for now, we will put it in the "op" object that the parser uses, * so we can get it again at the end of this scope. */ Op->Common.Node = Node; /* * If there is no object attached to the node, this node was just created * and we need to create the field object. Otherwise, this was a lookup * of an existing node and we don't want to create the field object again. */ ObjDesc = AcpiNsGetAttachedObject (Node); if (ObjDesc) { return_ACPI_STATUS (AE_OK); } /* * The Field definition is not fully parsed at this time. * (We must save the address of the AML for the buffer and index operands) */ /* Create the buffer field object */ ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER_FIELD); if (!ObjDesc) { Status = AE_NO_MEMORY; goto Cleanup; } /* * Remember location in AML stream of the field unit opcode and operands * -- since the buffer and index operands must be evaluated. */ SecondDesc = ObjDesc->Common.NextObject; SecondDesc->Extra.AmlStart = Op->Named.Data; SecondDesc->Extra.AmlLength = Op->Named.Length; ObjDesc->BufferField.Node = Node; /* Attach constructed field descriptors to parent node */ Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_BUFFER_FIELD); if (ACPI_FAILURE (Status)) { goto Cleanup; } Cleanup: /* Remove local reference to the object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiDsGetFieldNames * * PARAMETERS: Info - CreateField info structure * WalkState - Current method state * Arg - First parser arg for the field name list * * RETURN: Status * * DESCRIPTION: Process all named fields in a field declaration. Names are * entered into the namespace. * ******************************************************************************/ static ACPI_STATUS AcpiDsGetFieldNames ( ACPI_CREATE_FIELD_INFO *Info, ACPI_WALK_STATE *WalkState, ACPI_PARSE_OBJECT *Arg) { ACPI_STATUS Status; UINT64 Position; ACPI_PARSE_OBJECT *Child; #ifdef ACPI_EXEC_APP ACPI_OPERAND_OBJECT *ResultDesc; ACPI_OPERAND_OBJECT *ObjDesc; char *NamePath; #endif ACPI_FUNCTION_TRACE_PTR (DsGetFieldNames, Info); /* First field starts at bit zero */ Info->FieldBitPosition = 0; /* Process all elements in the field list (of parse nodes) */ while (Arg) { /* * Four types of field elements are handled: * 1) Name - Enters a new named field into the namespace * 2) Offset - specifies a bit offset * 3) AccessAs - changes the access mode/attributes * 4) Connection - Associate a resource template with the field */ switch (Arg->Common.AmlOpcode) { case AML_INT_RESERVEDFIELD_OP: Position = (UINT64) Info->FieldBitPosition + (UINT64) Arg->Common.Value.Size; if (Position > ACPI_UINT32_MAX) { ACPI_ERROR ((AE_INFO, "Bit offset within field too large (> 0xFFFFFFFF)")); return_ACPI_STATUS (AE_SUPPORT); } Info->FieldBitPosition = (UINT32) Position; break; case AML_INT_ACCESSFIELD_OP: case AML_INT_EXTACCESSFIELD_OP: /* * Get new AccessType, AccessAttribute, and AccessLength fields * -- to be used for all field units that follow, until the * end-of-field or another AccessAs keyword is encountered. * NOTE. These three bytes are encoded in the integer value * of the parseop for convenience. * * In FieldFlags, preserve the flag bits other than the * ACCESS_TYPE bits. */ /* AccessType (ByteAcc, WordAcc, etc.) */ Info->FieldFlags = (UINT8) ((Info->FieldFlags & ~(AML_FIELD_ACCESS_TYPE_MASK)) | ((UINT8) ((UINT32) (Arg->Common.Value.Integer & 0x07)))); /* AccessAttribute (AttribQuick, AttribByte, etc.) */ Info->Attribute = (UINT8) ((Arg->Common.Value.Integer >> 8) & 0xFF); /* AccessLength (for serial/buffer protocols) */ Info->AccessLength = (UINT8) ((Arg->Common.Value.Integer >> 16) & 0xFF); break; case AML_INT_CONNECTION_OP: /* * Clear any previous connection. New connection is used for all * fields that follow, similar to AccessAs */ Info->ResourceBuffer = NULL; Info->ConnectionNode = NULL; Info->PinNumberIndex = 0; /* * A Connection() is either an actual resource descriptor (buffer) * or a named reference to a resource template */ Child = Arg->Common.Value.Arg; if (Child->Common.AmlOpcode == AML_INT_BYTELIST_OP) { Info->ResourceBuffer = Child->Named.Data; Info->ResourceLength = (UINT16) Child->Named.Value.Integer; } else { /* Lookup the Connection() namepath, it should already exist */ Status = AcpiNsLookup (WalkState->ScopeInfo, Child->Common.Value.Name, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE, WalkState, &Info->ConnectionNode); if (ACPI_FAILURE (Status)) { ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, Child->Common.Value.Name, Status); return_ACPI_STATUS (Status); } } break; case AML_INT_NAMEDFIELD_OP: /* Lookup the name, it should already exist */ Status = AcpiNsLookup (WalkState->ScopeInfo, (char *) &Arg->Named.Name, Info->FieldType, ACPI_IMODE_EXECUTE, ACPI_NS_DONT_OPEN_SCOPE, WalkState, &Info->FieldNode); if (ACPI_FAILURE (Status)) { ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, (char *) &Arg->Named.Name, Status); return_ACPI_STATUS (Status); } else { Arg->Common.Node = Info->FieldNode; Info->FieldBitLength = Arg->Common.Value.Size; /* * If there is no object attached to the node, this node was * just created and we need to create the field object. * Otherwise, this was a lookup of an existing node and we * don't want to create the field object again. */ if (!AcpiNsGetAttachedObject (Info->FieldNode)) { Status = AcpiExPrepFieldValue (Info); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } #ifdef ACPI_EXEC_APP NamePath = AcpiNsGetExternalPathname (Info->FieldNode); if (ACPI_SUCCESS (AeLookupInitFileEntry (NamePath, &ObjDesc))) { AcpiExWriteDataToField (ObjDesc, AcpiNsGetAttachedObject (Info->FieldNode), &ResultDesc); AcpiUtRemoveReference (ObjDesc); } ACPI_FREE (NamePath); #endif } } /* Keep track of bit position for the next field */ Position = (UINT64) Info->FieldBitPosition + (UINT64) Arg->Common.Value.Size; if (Position > ACPI_UINT32_MAX) { ACPI_ERROR ((AE_INFO, "Field [%4.4s] bit offset too large (> 0xFFFFFFFF)", ACPI_CAST_PTR (char, &Info->FieldNode->Name))); return_ACPI_STATUS (AE_SUPPORT); } Info->FieldBitPosition += Info->FieldBitLength; Info->PinNumberIndex++; /* Index relative to previous Connection() */ break; default: ACPI_ERROR ((AE_INFO, "Invalid opcode in field list: 0x%X", Arg->Common.AmlOpcode)); return_ACPI_STATUS (AE_AML_BAD_OPCODE); } Arg = Arg->Common.Next; } return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiDsCreateField * * PARAMETERS: Op - Op containing the Field definition and args * RegionNode - Object for the containing Operation Region * ` WalkState - Current method state * * RETURN: Status * * DESCRIPTION: Create a new field in the specified operation region * ******************************************************************************/ ACPI_STATUS AcpiDsCreateField ( ACPI_PARSE_OBJECT *Op, ACPI_NAMESPACE_NODE *RegionNode, ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status; ACPI_PARSE_OBJECT *Arg; ACPI_CREATE_FIELD_INFO Info; ACPI_FUNCTION_TRACE_PTR (DsCreateField, Op); /* First arg is the name of the parent OpRegion (must already exist) */ Arg = Op->Common.Value.Arg; if (!RegionNode) { Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.Name, ACPI_TYPE_REGION, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &RegionNode); #ifdef ACPI_ASL_COMPILER Status = AcpiDsCreateExternalRegion (Status, Arg, Arg->Common.Value.Name, WalkState, &RegionNode); #endif if (ACPI_FAILURE (Status)) { ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, Arg->Common.Value.Name, Status); return_ACPI_STATUS (Status); } } memset (&Info, 0, sizeof (ACPI_CREATE_FIELD_INFO)); /* Second arg is the field flags */ Arg = Arg->Common.Next; Info.FieldFlags = (UINT8) Arg->Common.Value.Integer; Info.Attribute = 0; /* Each remaining arg is a Named Field */ Info.FieldType = ACPI_TYPE_LOCAL_REGION_FIELD; Info.RegionNode = RegionNode; Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } if (Info.RegionNode->Object->Region.SpaceId == ACPI_ADR_SPACE_PLATFORM_COMM) { RegionNode->Object->Field.InternalPccBuffer = ACPI_ALLOCATE_ZEROED(Info.RegionNode->Object->Region.Length); if (!RegionNode->Object->Field.InternalPccBuffer) { return_ACPI_STATUS (AE_NO_MEMORY); } } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiDsInitFieldObjects * * PARAMETERS: Op - Op containing the Field definition and args * ` WalkState - Current method state * * RETURN: Status * * DESCRIPTION: For each "Field Unit" name in the argument list that is * part of the field declaration, enter the name into the * namespace. * ******************************************************************************/ ACPI_STATUS AcpiDsInitFieldObjects ( ACPI_PARSE_OBJECT *Op, ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status; ACPI_PARSE_OBJECT *Arg = NULL; ACPI_NAMESPACE_NODE *Node; UINT8 Type = 0; UINT32 Flags; ACPI_FUNCTION_TRACE_PTR (DsInitFieldObjects, Op); /* Execute flag should always be set when this function is entered */ if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE)) { if (WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP) { /* BankField Op is deferred, just return OK */ return_ACPI_STATUS (AE_OK); } ACPI_ERROR ((AE_INFO, "Parse deferred mode is not set")); return_ACPI_STATUS (AE_AML_INTERNAL); } /* * Get the FieldList argument for this opcode. This is the start of the * list of field elements. */ switch (WalkState->Opcode) { case AML_FIELD_OP: Arg = AcpiPsGetArg (Op, 2); Type = ACPI_TYPE_LOCAL_REGION_FIELD; break; case AML_BANK_FIELD_OP: Arg = AcpiPsGetArg (Op, 4); Type = ACPI_TYPE_LOCAL_BANK_FIELD; break; case AML_INDEX_FIELD_OP: Arg = AcpiPsGetArg (Op, 3); Type = ACPI_TYPE_LOCAL_INDEX_FIELD; break; default: return_ACPI_STATUS (AE_BAD_PARAMETER); } /* Creating new namespace node(s), should not already exist */ Flags = ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND; /* * Mark node(s) temporary if we are executing a normal control * method. (Don't mark if this is a module-level code method) */ if (WalkState->MethodNode && !(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL)) { Flags |= ACPI_NS_TEMPORARY; } #ifdef ACPI_EXEC_APP Flags |= ACPI_NS_OVERRIDE_IF_FOUND; #endif /* * Walk the list of entries in the FieldList * Note: FieldList can be of zero length. In this case, Arg will be NULL. */ while (Arg) { /* * Ignore OFFSET/ACCESSAS/CONNECTION terms here; we are only interested * in the field names in order to enter them into the namespace. */ if (Arg->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP) { Status = AcpiNsLookup (WalkState->ScopeInfo, (char *) &Arg->Named.Name, Type, ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node); if (ACPI_FAILURE (Status)) { ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, (char *) &Arg->Named.Name, Status); if (Status != AE_ALREADY_EXISTS) { return_ACPI_STATUS (Status); } /* Name already exists, just ignore this error */ } Arg->Common.Node = Node; } /* Get the next field element in the list */ Arg = Arg->Common.Next; } return_ACPI_STATUS (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiDsCreateBankField * * PARAMETERS: Op - Op containing the Field definition and args * RegionNode - Object for the containing Operation Region * WalkState - Current method state * * RETURN: Status * * DESCRIPTION: Create a new bank field in the specified operation region * ******************************************************************************/ ACPI_STATUS AcpiDsCreateBankField ( ACPI_PARSE_OBJECT *Op, ACPI_NAMESPACE_NODE *RegionNode, ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status; ACPI_PARSE_OBJECT *Arg; ACPI_CREATE_FIELD_INFO Info; ACPI_FUNCTION_TRACE_PTR (DsCreateBankField, Op); /* First arg is the name of the parent OpRegion (must already exist) */ Arg = Op->Common.Value.Arg; if (!RegionNode) { Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.Name, ACPI_TYPE_REGION, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &RegionNode); #ifdef ACPI_ASL_COMPILER Status = AcpiDsCreateExternalRegion (Status, Arg, Arg->Common.Value.Name, WalkState, &RegionNode); #endif if (ACPI_FAILURE (Status)) { ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, Arg->Common.Value.Name, Status); return_ACPI_STATUS (Status); } } /* Second arg is the Bank Register (Field) (must already exist) */ Arg = Arg->Common.Next; Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &Info.RegisterNode); if (ACPI_FAILURE (Status)) { ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, Arg->Common.Value.String, Status); return_ACPI_STATUS (Status); } /* * Third arg is the BankValue * This arg is a TermArg, not a constant * It will be evaluated later, by AcpiDsEvalBankFieldOperands */ Arg = Arg->Common.Next; /* Fourth arg is the field flags */ Arg = Arg->Common.Next; Info.FieldFlags = (UINT8) Arg->Common.Value.Integer; /* Each remaining arg is a Named Field */ Info.FieldType = ACPI_TYPE_LOCAL_BANK_FIELD; Info.RegionNode = RegionNode; /* * Use Info.DataRegisterNode to store BankField Op * It's safe because DataRegisterNode will never be used when create * bank field \we store AmlStart and AmlLength in the BankField Op for * late evaluation. Used in AcpiExPrepFieldValue(Info) * * TBD: Or, should we add a field in ACPI_CREATE_FIELD_INFO, like * "void *ParentOp"? */ Info.DataRegisterNode = (ACPI_NAMESPACE_NODE*) Op; Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiDsCreateIndexField * * PARAMETERS: Op - Op containing the Field definition and args * RegionNode - Object for the containing Operation Region * ` WalkState - Current method state * * RETURN: Status * * DESCRIPTION: Create a new index field in the specified operation region * ******************************************************************************/ ACPI_STATUS AcpiDsCreateIndexField ( ACPI_PARSE_OBJECT *Op, ACPI_NAMESPACE_NODE *RegionNode, ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status; ACPI_PARSE_OBJECT *Arg; ACPI_CREATE_FIELD_INFO Info; ACPI_FUNCTION_TRACE_PTR (DsCreateIndexField, Op); /* First arg is the name of the Index register (must already exist) */ Arg = Op->Common.Value.Arg; Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &Info.RegisterNode); if (ACPI_FAILURE (Status)) { ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, Arg->Common.Value.String, Status); return_ACPI_STATUS (Status); } /* Second arg is the data register (must already exist) */ Arg = Arg->Common.Next; Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &Info.DataRegisterNode); if (ACPI_FAILURE (Status)) { ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, Arg->Common.Value.String, Status); return_ACPI_STATUS (Status); } /* Next arg is the field flags */ Arg = Arg->Common.Next; Info.FieldFlags = (UINT8) Arg->Common.Value.Integer; /* Each remaining arg is a Named Field */ Info.FieldType = ACPI_TYPE_LOCAL_INDEX_FIELD; Info.RegionNode = RegionNode; Status = AcpiDsGetFieldNames (&Info, WalkState, Arg->Common.Next); return_ACPI_STATUS (Status); }