| 0,0 → 1,776 |
|---|
| /****************************************************************************** |
| * |
| * Module Name: dsfield - Dispatcher field routines |
| * |
| *****************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, 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 __DSFIELD_C__ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "amlcode.h" |
| #include "acdispat.h" |
| #include "acinterp.h" |
| #include "acnamesp.h" |
| #include "acparser.h" |
| |
| |
| #define _COMPONENT ACPI_DISPATCHER |
| ACPI_MODULE_NAME ("dsfield") |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| AcpiDsGetFieldNames ( |
| ACPI_CREATE_FIELD_INFO *Info, |
| ACPI_WALK_STATE *WalkState, |
| ACPI_PARSE_OBJECT *Arg); |
| |
| |
| /******************************************************************************* |
| * |
| * 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; |
| Status = AE_OK; |
| } |
| else |
| { |
| /* Execute flag should always be set when this function is entered */ |
| |
| if (!(WalkState->ParseFlags & ACPI_PARSE_EXECUTE)) |
| { |
| 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 (ACPI_FAILURE (Status)) |
| { |
| ACPI_ERROR_NAMESPACE (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_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) |
| { |
| /* |
| * Three types of field elements are handled: |
| * 1) Offset - specifies a bit offset |
| * 2) AccessAs - changes the access mode |
| * 3) Name - Enters a new named field into the namespace |
| */ |
| 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: |
| |
| /* |
| * Get a new AccessType and AccessAttribute -- to be used for all |
| * field units that follow, until field end or another AccessAs |
| * keyword. |
| * |
| * In FieldFlags, preserve the flag bits other than the |
| * ACCESS_TYPE bits |
| */ |
| Info->FieldFlags = (UINT8) |
| ((Info->FieldFlags & ~(AML_FIELD_ACCESS_TYPE_MASK)) | |
| ((UINT8) ((UINT32) Arg->Common.Value.Integer >> 8))); |
| |
| Info->Attribute = (UINT8) (Arg->Common.Value.Integer); |
| 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 ((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); |
| } |
| } |
| } |
| |
| /* 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; |
| 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); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_ERROR_NAMESPACE (Arg->Common.Value.Name, Status); |
| return_ACPI_STATUS (Status); |
| } |
| } |
| |
| /* 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); |
| |
| 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); |
| } |
| |
| 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; |
| } |
| |
| /* |
| * 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 and ACCESSAS 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 ((char *) &Arg->Named.Name, Status); |
| if (Status != AE_ALREADY_EXISTS) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Name already exists, just ignore this error */ |
| |
| Status = AE_OK; |
| } |
| |
| 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); |
| if (ACPI_FAILURE (Status)) |
| { |
| ACPI_ERROR_NAMESPACE (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 (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 (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 (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); |
| } |
| |
| |