/****************************************************************************** * * Module Name: asllookup- Namespace lookup * $Revision: 83 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2004, 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. * *****************************************************************************/ #include "aslcompiler.h" #include "aslcompiler.y.h" #include "acparser.h" #include "amlcode.h" #include "acnamesp.h" #include "acdispat.h" #define _COMPONENT ACPI_COMPILER ACPI_MODULE_NAME ("asllookup") /******************************************************************************* * * FUNCTION: LsDoOneNamespaceObject * * PARAMETERS: ACPI_WALK_CALLBACK * * RETURN: Status * * DESCRIPTION: Dump a namespace object to the namespace output file. * Called during the walk of the namespace to dump all objects. * ******************************************************************************/ ACPI_STATUS LsDoOneNamespaceObject ( ACPI_HANDLE ObjHandle, UINT32 Level, void *Context, void **ReturnValue) { ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; ACPI_PARSE_OBJECT *Op; Gbl_NumNamespaceObjects++; FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "%5d [%d] %*s %4.4s - %s", Gbl_NumNamespaceObjects, Level, (Level * 3), " ", &Node->Name, AcpiUtGetTypeName (Node->Type)); Op = ACPI_CAST_PTR (ACPI_PARSE_OBJECT, Node->Object); if (Op) { if (Op->Asl.ParseOpcode == PARSEOP_NAME) { Op = Op->Asl.Child; } switch (Node->Type) { case ACPI_TYPE_INTEGER: if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING)) { Op = Op->Asl.Next; } if (Op->Asl.Value.Integer > ACPI_UINT32_MAX) { FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [Initial Value = 0x%X%X]", ACPI_HIDWORD (Op->Asl.Value.Integer64), (UINT32) Op->Asl.Value.Integer); } else { FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [Initial Value = 0x%X]", (UINT32) Op->Asl.Value.Integer); } break; case ACPI_TYPE_STRING: if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING)) { Op = Op->Asl.Next; } FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [Initial Value = \"%s\"]", Op->Asl.Value.String); break; case ACPI_TYPE_LOCAL_REGION_FIELD: if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING)) { Op = Op->Asl.Child; } FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, " [Offset 0x%02X, Length 0x%02X]", Op->Asl.Parent->Asl.ExtraValue, (UINT32) Op->Asl.Value.Integer); break; default: /* Nothing to do for other types */ break; } } FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "\n"); return (AE_OK); } /******************************************************************************* * * FUNCTION: LsDisplayNamespace * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Walk the namespace an display information about each node * in the tree. Information is written to the optional * namespace output file. * ******************************************************************************/ ACPI_STATUS LsDisplayNamespace ( void) { ACPI_STATUS Status; if (!Gbl_NsOutputFlag) { return (AE_OK); } /* File header */ FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "Contents of ACPI Namespace\n\n"); FlPrintFile (ASL_FILE_NAMESPACE_OUTPUT, "Count Depth Name - Type\n\n"); /* Walk entire namespace from the root */ Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, FALSE, LsDoOneNamespaceObject, NULL, NULL); return (Status); } /******************************************************************************* * * FUNCTION: LsCompareOneNamespaceObject * * PARAMETERS: ACPI_WALK_CALLBACK * * RETURN: Status * * DESCRIPTION: Compare name of one object. * ******************************************************************************/ ACPI_STATUS LsCompareOneNamespaceObject ( ACPI_HANDLE ObjHandle, UINT32 Level, void *Context, void **ReturnValue) { ACPI_NAMESPACE_NODE *Node = (ACPI_NAMESPACE_NODE *) ObjHandle; /* Simply check the name */ if (*((UINT32 *) (Context)) == Node->Name.Integer) { /* Abort walk if we found one instance */ return (AE_CTRL_TRUE); } return (AE_OK); } /******************************************************************************* * * FUNCTION: LkObjectExists * * PARAMETERS: Name - 4 char ACPI name * * RETURN: TRUE if name exists in namespace * * DESCRIPTION: Walk the namespace to find an object * ******************************************************************************/ BOOLEAN LkObjectExists ( char *Name) { ACPI_STATUS Status; /* Walk entire namespace from the supplied root */ Status = AcpiNsWalkNamespace (ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, FALSE, LsCompareOneNamespaceObject, Name, NULL); if (Status == AE_CTRL_TRUE) { /* At least one instance of the name was found */ return (TRUE); } return (FALSE); } /******************************************************************************* * * FUNCTION: LkCrossReferenceNamespace * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Perform a cross reference check of the parse tree against the * namespace. Every named referenced within the parse tree * should be get resolved with a namespace lookup. If not, the * original reference in the ASL code is invalid -- i.e., refers * to a non-existent object. * * NOTE: The ASL "External" operator causes the name to be inserted into the * namespace so that references to the external name will be resolved * correctly here. * ******************************************************************************/ ACPI_STATUS LkCrossReferenceNamespace ( void) { ACPI_WALK_STATE *WalkState; DbgPrint (ASL_DEBUG_OUTPUT, "\nCross referencing namespace\n\n"); /* * Create a new walk state for use when looking up names * within the namespace (Passed as context to the callbacks) */ WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL); if (!WalkState) { return AE_NO_MEMORY; } /* Walk the entire parse tree */ TrWalkParseTree (RootNode, ASL_WALK_VISIT_TWICE, LkNamespaceLocateBegin, LkNamespaceLocateEnd, WalkState); return AE_OK; } /******************************************************************************* * * FUNCTION: LkCheckFieldRange * * PARAMETERS: RegionBitLength - Length of entire parent region * FieldBitOffset - Start of the field unit (within region) * FieldBitLength - Entire length of field unit * AccessBitWidth - Access width of the field unit * * RETURN: None * * DESCRIPTION: Check one field unit to make sure it fits in the parent * op region. * * Note: AccessBitWidth must be either 8,16,32, or 64 * ******************************************************************************/ void LkCheckFieldRange ( ACPI_PARSE_OBJECT *Op, UINT32 RegionBitLength, UINT32 FieldBitOffset, UINT32 FieldBitLength, UINT32 AccessBitWidth) { UINT32 FieldEndBitOffset; /* * Check each field unit against the region size. The entire * field unit (start offset plus length) must fit within the * region. */ FieldEndBitOffset = FieldBitOffset + FieldBitLength; if (FieldEndBitOffset > RegionBitLength) { /* Field definition itself is beyond the end-of-region */ AslError (ASL_ERROR, ASL_MSG_FIELD_UNIT_OFFSET, Op, NULL); return; } /* * Now check that the field plus AccessWidth doesn't go beyond * the end-of-region. Assumes AccessBitWidth is a power of 2 */ FieldEndBitOffset = ACPI_ROUND_UP (FieldEndBitOffset, AccessBitWidth); if (FieldEndBitOffset > RegionBitLength) { /* Field definition combined with the access is beyond EOR */ AslError (ASL_ERROR, ASL_MSG_FIELD_UNIT_ACCESS_WIDTH, Op, NULL); } } /******************************************************************************* * * FUNCTION: LkNamespaceLocateBegin * * PARAMETERS: ASL_WALK_CALLBACK * * RETURN: Status * * DESCRIPTION: Descending callback used during cross-reference. For named * object references, attempt to locate the name in the * namespace. * * NOTE: ASL references to named fields within resource descriptors are * resolved to integer values here. Therefore, this step is an * important part of the code generation. We don't know that the * name refers to a resource descriptor until now. * ******************************************************************************/ ACPI_STATUS LkNamespaceLocateBegin ( ACPI_PARSE_OBJECT *Op, UINT32 Level, void *Context) { ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; ACPI_OBJECT_TYPE ObjectType; char *Path; UINT8 PassedArgs; ACPI_PARSE_OBJECT *NextOp; ACPI_PARSE_OBJECT *OwningOp; ACPI_PARSE_OBJECT *SpaceIdOp; UINT32 MinimumLength; UINT32 Temp; const ACPI_OPCODE_INFO *OpInfo; UINT32 Flags; ACPI_FUNCTION_TRACE_PTR ("LkNamespaceLocateBegin", Op); /* * If this node is the actual declaration of a name * [such as the XXXX name in "Method (XXXX)"], * we are not interested in it here. We only care about names that are * references to other objects within the namespace and the parent objects * of name declarations */ if (Op->Asl.CompileFlags & NODE_IS_NAME_DECLARATION) { return (AE_OK); } /* We are only interested in opcodes that have an associated name */ OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode); if ((!(OpInfo->Flags & AML_NAMED)) && (!(OpInfo->Flags & AML_CREATE)) && (Op->Asl.ParseOpcode != PARSEOP_NAMESTRING) && (Op->Asl.ParseOpcode != PARSEOP_NAMESEG) && (Op->Asl.ParseOpcode != PARSEOP_METHODCALL)) { return (AE_OK); } /* * We must enable the "search-to-root" for single NameSegs, but * we have to be very careful about opening up scopes */ Flags = ACPI_NS_SEARCH_PARENT; if ((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) || (Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)) { /* * These are name references, do not push the scope stack * for them. */ Flags |= ACPI_NS_DONT_OPEN_SCOPE; } /* Get the NamePath from the appropriate place */ if (OpInfo->Flags & AML_NAMED) { /* For all NAMED operators, the name reference is the first child */ Path = Op->Asl.Child->Asl.Value.String; if (Op->Asl.AmlOpcode == AML_ALIAS_OP) { /* * ALIAS is the only oddball opcode, the name declaration * (alias name) is the second operand */ Path = Op->Asl.Child->Asl.Next->Asl.Value.String; } } else if (OpInfo->Flags & AML_CREATE) { /* Name must appear as the last parameter */ NextOp = Op->Asl.Child; while (!(NextOp->Asl.CompileFlags & NODE_IS_NAME_DECLARATION)) { NextOp = NextOp->Asl.Next; } Path = NextOp->Asl.Value.String; } else { Path = Op->Asl.Value.String; } ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Type=%s\n", AcpiUtGetTypeName (ObjectType))); /* * Lookup the name in the namespace. Name must exist at this point, or it * is an invalid reference. * * The namespace is also used as a lookup table for references to resource * descriptors and the fields within them. */ Gbl_NsLookupCount++; Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, ACPI_IMODE_EXECUTE, Flags, WalkState, &(Node)); if (ACPI_FAILURE (Status)) { if (Status == AE_NOT_FOUND) { /* * We didn't find the name reference by path -- we can qualify this * a little better before we print an error message */ if (strlen (Path) == ACPI_NAME_SIZE) { /* A simple, one-segment ACPI name */ if (LkObjectExists (Path)) { /* There exists such a name, but we couldn't get to it from this scope */ AslError (ASL_ERROR, ASL_MSG_NOT_REACHABLE, Op, Op->Asl.ExternalName); } else { /* The name doesn't exist, period */ AslError (ASL_ERROR, ASL_MSG_NOT_EXIST, Op, Op->Asl.ExternalName); } } else { /* Check for a fully qualified path */ if (Path[0] == AML_ROOT_PREFIX) { /* Gave full path, the object does not exist */ AslError (ASL_ERROR, ASL_MSG_NOT_EXIST, Op, Op->Asl.ExternalName); } else { /* We can't tell whether it doesn't exist or just can't be reached. */ AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op, Op->Asl.ExternalName); } } Status = AE_OK; } return (Status); } /* Attempt to optimize the NamePath */ OptOptimizeNamePath (Op, OpInfo->Flags, WalkState, Path, Node); /* * Dereference an alias. (A name reference that is an alias.) * Aliases are not nested; The alias always points to the final object */ if ((Op->Asl.ParseOpcode != PARSEOP_ALIAS) && (Node->Type == ACPI_TYPE_LOCAL_ALIAS)) { /* This node points back to the original PARSEOP_ALIAS */ NextOp = ACPI_CAST_PTR (ACPI_PARSE_OBJECT, Node->Object); /* The first child is the alias target op */ NextOp = NextOp->Asl.Child; /* Who in turn points back to original target alias node */ if (NextOp->Asl.Node) { Node = NextOp->Asl.Node; } else { AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Op, "Missing alias link"); } } /* 1) Check for a reference to a resource descriptor */ else if ((Node->Type == ACPI_TYPE_LOCAL_RESOURCE_FIELD) || (Node->Type == ACPI_TYPE_LOCAL_RESOURCE)) { /* * This was a reference to a field within a resource descriptor. Extract * the associated field offset (either a bit or byte offset depending on * the field type) and change the named reference into an integer for * AML code generation */ Temp = (UINT32) Node->OwnerId; if (Node->Flags & ANOBJ_IS_BIT_OFFSET) { Op->Asl.CompileFlags |= NODE_IS_BIT_OFFSET; } /* Perform BitOffset <--> ByteOffset conversion if necessary */ switch (Op->Asl.Parent->Asl.AmlOpcode) { case AML_CREATE_FIELD_OP: /* We allow a Byte offset to Bit Offset conversion for this op */ if (!(Op->Asl.CompileFlags & NODE_IS_BIT_OFFSET)) { /* Simply multiply byte offset times 8 to get bit offset */ Temp = ACPI_MUL_8 (Temp); } break; case AML_CREATE_BIT_FIELD_OP: /* This op requires a Bit Offset */ if (!(Op->Asl.CompileFlags & NODE_IS_BIT_OFFSET)) { AslError (ASL_ERROR, ASL_MSG_BYTES_TO_BITS, Op, NULL); } break; case AML_CREATE_BYTE_FIELD_OP: case AML_CREATE_WORD_FIELD_OP: case AML_CREATE_DWORD_FIELD_OP: case AML_CREATE_QWORD_FIELD_OP: case AML_INDEX_OP: /* These Ops require Byte offsets */ if (Op->Asl.CompileFlags & NODE_IS_BIT_OFFSET) { AslError (ASL_ERROR, ASL_MSG_BITS_TO_BYTES, Op, NULL); } break; default: /* Nothing to do for other opcodes */ break; } /* Now convert this node to an integer whose value is the field offset */ Op->Asl.ParseOpcode = PARSEOP_INTEGER; Op->Asl.Value.Integer = (UINT64) Temp; Op->Asl.CompileFlags |= NODE_IS_RESOURCE_FIELD; OpcGenerateAmlOpcode (Op); Op->Asl.AmlLength = OpcSetOptimalIntegerSize (Op); } /* 2) Check for a method invocation */ else if ((((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) || (Op->Asl.ParseOpcode == PARSEOP_NAMESEG)) && (Node->Type == ACPI_TYPE_METHOD) && (Op->Asl.Parent) && (Op->Asl.Parent->Asl.ParseOpcode != PARSEOP_METHOD)) || (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)) { /* * There are two types of method invocation: * 1) Invocation with arguments -- the parser recognizes this as a METHODCALL * 2) Invocation with no arguments --the parser cannot determine that this is a method * invocation, therefore we have to figure it out here. */ if (Node->Type != ACPI_TYPE_METHOD) { sprintf (MsgBuffer, "%s is a %s", Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type)); AslError (ASL_ERROR, ASL_MSG_NOT_METHOD, Op, MsgBuffer); return (AE_OK); } /* Save the method node in the caller's op */ Op->Asl.Node = Node; if (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_CONDREFOF) { return (AE_OK); } /* * This is a method invocation, with or without arguments. * Count the number of arguments, each appears as a child * under the parent node */ Op->Asl.ParseOpcode = PARSEOP_METHODCALL; UtSetParseOpName (Op); PassedArgs = 0; NextOp = Op->Asl.Child; while (NextOp) { PassedArgs++; NextOp = NextOp->Asl.Next; } if (Node->OwnerId != ASL_EXTERNAL_METHOD) { /* * Check the parsed arguments with the number expected by the * method declaration itself */ if (PassedArgs != Node->OwnerId) { sprintf (MsgBuffer, "%s requires %d", Op->Asl.ExternalName, Node->OwnerId); if (PassedArgs < Node->OwnerId) { AslError (ASL_ERROR, ASL_MSG_ARG_COUNT_LO, Op, MsgBuffer); } else { AslError (ASL_ERROR, ASL_MSG_ARG_COUNT_HI, Op, MsgBuffer); } } } } /* * 3) Check for an ASL Field definition */ else if ((Op->Asl.Parent) && ((Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_FIELD) || (Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_BANKFIELD))) { /* * Offset checking for fields. If the parent operation region has a * constant length (known at compile time), we can check fields * defined in that region against the region length. This will catch * fields and field units that cannot possibly fit within the region. * * Note: Index fields do not directly reference an operation region, * thus they are not included in this check. */ if (Op == Op->Asl.Parent->Asl.Child) { /* * This is the first child of the field node, which is * the name of the region. Get the parse node for the * region -- which contains the length of the region. */ OwningOp = ACPI_CAST_PTR (ACPI_PARSE_OBJECT, Node->Object); Op->Asl.Parent->Asl.ExtraValue = ACPI_MUL_8 ((UINT32) OwningOp->Asl.Value.Integer); /* Examine the field access width */ switch ((UINT8) Op->Asl.Parent->Asl.Value.Integer) { case AML_FIELD_ACCESS_ANY: case AML_FIELD_ACCESS_BYTE: case AML_FIELD_ACCESS_BUFFER: default: MinimumLength = 1; break; case AML_FIELD_ACCESS_WORD: MinimumLength = 2; break; case AML_FIELD_ACCESS_DWORD: MinimumLength = 4; break; case AML_FIELD_ACCESS_QWORD: MinimumLength = 8; break; } /* * Is the region at least as big as the access width? * Note: DataTableRegions have 0 length */ if (((UINT32) OwningOp->Asl.Value.Integer) && ((UINT32) OwningOp->Asl.Value.Integer < MinimumLength)) { AslError (ASL_ERROR, ASL_MSG_FIELD_ACCESS_WIDTH, Op, NULL); } /* * Check EC/CMOS/SMBUS fields to make sure that the correct * access type is used (BYTE for EC/CMOS, BUFFER for SMBUS) */ SpaceIdOp = OwningOp->Asl.Child->Asl.Next; switch ((UINT32) SpaceIdOp->Asl.Value.Integer) { case REGION_EC: case REGION_CMOS: if ((UINT8) Op->Asl.Parent->Asl.Value.Integer != AML_FIELD_ACCESS_BYTE) { AslError (ASL_ERROR, ASL_MSG_REGION_BYTE_ACCESS, Op, NULL); } break; case REGION_SMBUS: if ((UINT8) Op->Asl.Parent->Asl.Value.Integer != AML_FIELD_ACCESS_BUFFER) { AslError (ASL_ERROR, ASL_MSG_REGION_BUFFER_ACCESS, Op, NULL); } break; default: /* Nothing to do for other address spaces */ break; } } else { /* * This is one element of the field list. Check to make sure * that it does not go beyond the end of the parent operation region. * * In the code below: * Op->Asl.Parent->Asl.ExtraValue - Region Length (bits) * Op->Asl.ExtraValue - Field start offset (bits) * Op->Asl.Child->Asl.Value.Integer32 - Field length (bits) * Op->Asl.Child->Asl.ExtraValue - Field access width (bits) */ if (Op->Asl.Parent->Asl.ExtraValue && Op->Asl.Child) { LkCheckFieldRange (Op, Op->Asl.Parent->Asl.ExtraValue, Op->Asl.ExtraValue, (UINT32) Op->Asl.Child->Asl.Value.Integer, Op->Asl.Child->Asl.ExtraValue); } } } Op->Asl.Node = Node; return (Status); } /******************************************************************************* * * FUNCTION: LkNamespaceLocateEnd * * PARAMETERS: ASL_WALK_CALLBACK * * RETURN: Status * * DESCRIPTION: Ascending callback used during cross reference. We only * need to worry about scope management here. * ******************************************************************************/ ACPI_STATUS LkNamespaceLocateEnd ( ACPI_PARSE_OBJECT *Op, UINT32 Level, void *Context) { ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; const ACPI_OPCODE_INFO *OpInfo; ACPI_FUNCTION_TRACE ("LkNamespaceLocateEnd"); /* We are only interested in opcodes that have an associated name */ OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode); if (!(OpInfo->Flags & AML_NAMED)) { return (AE_OK); } /* Not interested in name references, we did not open a scope for them */ if ((Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) || (Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)) { return (AE_OK); } /* Pop the scope stack if necessary */ if (AcpiNsOpensScope (AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode))) { ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "%s: Popping scope for Op %p\n", AcpiUtGetTypeName (OpInfo->ObjectType), Op)); AcpiDsScopeStackPop (WalkState); } return (AE_OK); }