/****************************************************************************** * * Module Name: dswload - Dispatcher namespace load callbacks * $Revision: 59 $ * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2003, 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 __ASLLOAD_C__ #include "aslcompiler.h" #include "amlcode.h" #include "acdispat.h" #include "acnamesp.h" #include "aslcompiler.y.h" #define _COMPONENT ACPI_COMPILER ACPI_MODULE_NAME ("aslload") /******************************************************************************* * * FUNCTION: LdLoadNamespace * * PARAMETERS: None * * RETURN: Status * * DESCRIPTION: Perform a walk of the parse tree that in turn loads all of the * named ASL/AML objects into the namespace. The namespace is * constructed in order to resolve named references and references * to named fields within resource templates/descriptors. * ******************************************************************************/ ACPI_STATUS LdLoadNamespace ( ACPI_PARSE_OBJECT *RootOp) { ACPI_WALK_STATE *WalkState; DbgPrint (ASL_DEBUG_OUTPUT, "\nCreating namespace\n\n"); /* Create a new walk state */ WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL); if (!WalkState) { return AE_NO_MEMORY; } /* Perform the walk of the parse tree */ TrWalkParseTree (RootOp, ASL_WALK_VISIT_TWICE, LdNamespace1Begin, LdNamespace1End, WalkState); /* Dump the namespace if debug is enabled */ AcpiNsDumpTables (ACPI_NS_ALL, ACPI_UINT32_MAX); return AE_OK; } /******************************************************************************* * * FUNCTION: LdLoadFieldElements * * PARAMETERS: Op - Parent node (Field) * WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Enter the named elements of the field (children of the parent) * into the namespace. * ******************************************************************************/ ACPI_STATUS LdLoadFieldElements ( ACPI_PARSE_OBJECT *Op, ACPI_WALK_STATE *WalkState) { ACPI_PARSE_OBJECT *Child = NULL; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; /* Get the first named field element */ switch (Op->Asl.AmlOpcode) { case AML_BANK_FIELD_OP: Child = UtGetArg (Op, 6); break; case AML_INDEX_FIELD_OP: Child = UtGetArg (Op, 5); break; case AML_FIELD_OP: Child = UtGetArg (Op, 4); break; default: /* No other opcodes should arrive here */ return (AE_BAD_PARAMETER); } /* Enter all elements into the namespace */ while (Child) { switch (Child->Asl.AmlOpcode) { case AML_INT_RESERVEDFIELD_OP: case AML_INT_ACCESSFIELD_OP: break; default: Status = AcpiNsLookup (WalkState->ScopeInfo, Child->Asl.Value.String, ACPI_TYPE_LOCAL_REGION_FIELD, ACPI_IMODE_LOAD_PASS1, ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND, NULL, &Node); if (ACPI_FAILURE (Status)) { if (Status != AE_ALREADY_EXISTS) { return (Status); } /* * The name already exists in this scope * But continue processing the elements */ AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Child, Child->Asl.Value.String); } else { Child->Asl.Node = Node; Node->Object = (ACPI_OPERAND_OBJECT *) Child; } break; } Child = Child->Asl.Next; } return (AE_OK); } /******************************************************************************* * * FUNCTION: LdLoadResourceElements * * PARAMETERS: Op - Parent node (Resource Descriptor) * WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Enter the named elements of the resource descriptor (children * of the parent) into the namespace. * * NOTE: In the real AML namespace, these named elements never exist. But * we simply use the namespace here as a symbol table so we can look * them up as they are referenced. * ******************************************************************************/ ACPI_STATUS LdLoadResourceElements ( ACPI_PARSE_OBJECT *Op, ACPI_WALK_STATE *WalkState) { ACPI_PARSE_OBJECT *InitializerOp = NULL; ACPI_NAMESPACE_NODE *Node; ACPI_STATUS Status; /* * Enter the resouce name into the namespace * This opens a scope */ Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Asl.Namepath, ACPI_TYPE_LOCAL_RESOURCE, ACPI_IMODE_LOAD_PASS1, ACPI_NS_NO_UPSEARCH, WalkState, &Node); if (ACPI_FAILURE (Status)) { return (Status); } /* * Now enter the predefined fields, for easy lookup when referenced * by the source ASL */ InitializerOp = ASL_GET_CHILD_NODE (Op); while (InitializerOp) { if (InitializerOp->Asl.ExternalName) { Status = AcpiNsLookup (WalkState->ScopeInfo, InitializerOp->Asl.ExternalName, ACPI_TYPE_LOCAL_RESOURCE_FIELD, ACPI_IMODE_LOAD_PASS1, ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE, NULL, &Node); if (ACPI_FAILURE (Status)) { return (Status); } /* * Store the field offset in the namespace node so it * can be used when the field is referenced */ Node->OwnerId = (UINT16) InitializerOp->Asl.Value.Integer; InitializerOp->Asl.Node = Node; Node->Object = (ACPI_OPERAND_OBJECT *) InitializerOp; /* Pass thru the field type (Bitfield or Bytefield) */ if (InitializerOp->Asl.CompileFlags & NODE_IS_BIT_OFFSET) { Node->Flags |= ANOBJ_IS_BIT_OFFSET; } } InitializerOp = ASL_GET_PEER_NODE (InitializerOp); } return (AE_OK); } /******************************************************************************* * * FUNCTION: LdNamespace1Begin * * PARAMETERS: ASL_WALK_CALLBACK * * RETURN: Status * * DESCRIPTION: Descending callback used during the parse tree walk. If this * is a named AML opcode, enter into the namespace * ******************************************************************************/ ACPI_STATUS LdNamespace1Begin ( 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; ACPI_OBJECT_TYPE ActualObjectType = ACPI_TYPE_ANY; char *Path; UINT32 Flags = ACPI_NS_NO_UPSEARCH; ACPI_PARSE_OBJECT *Arg; UINT32 i; ACPI_FUNCTION_NAME ("LdNamespace1Begin"); ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op %p [%s]\n", Op, Op->Asl.ParseOpName)); /* * We are only interested in opcodes that have an associated name * (or multiple names) */ switch (Op->Asl.AmlOpcode) { case AML_BANK_FIELD_OP: case AML_INDEX_FIELD_OP: case AML_FIELD_OP: Status = LdLoadFieldElements (Op, WalkState); return (Status); default: /* All other opcodes go below */ break; } /* Check if this object has already been installed in the namespace */ if (Op->Asl.Node) { return (AE_OK); } Path = Op->Asl.Namepath; if (!Path) { return (AE_OK); } /* Map the raw opcode into an internal object type */ switch (Op->Asl.ParseOpcode) { case PARSEOP_NAME: Arg = Op->Asl.Child; /* Get the NameSeg/NameString node */ Arg = Arg->Asl.Next; /* First peer is the object to be associated with the name */ /* Get the data type associated with the named object, not the name itself */ /* Log2 loop to convert from Btype (binary) to Etype (encoded) */ ObjectType = 1; for (i = 1; i < Arg->Asl.AcpiBtype; i *= 2) { ObjectType++; } break; case PARSEOP_EXTERNAL: /* * "External" simply enters a name and type into the namespace. * We must be careful to not open a new scope, however, no matter * what type the external name refers to (e.g., a method) * * first child is name, next child is ObjectType */ ActualObjectType = (UINT8) Op->Asl.Child->Asl.Next->Asl.Value.Integer; ObjectType = ACPI_TYPE_ANY; break; case PARSEOP_DEFAULT_ARG: if(Op->Asl.CompileFlags == NODE_IS_RESOURCE_DESC) { Status = LdLoadResourceElements (Op, WalkState); goto Exit; } ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); break; case PARSEOP_SCOPE: /* * The name referenced by Scope(Name) must already exist at this point. * In other words, forward references for Scope() are not supported. * The only real reason for this is that the MS interpreter cannot * handle this case. Perhaps someday this case can go away. */ Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node)); if (ACPI_FAILURE (Status)) { if (Status == AE_NOT_FOUND) { /* The name was not found, go ahead and create it */ Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_LOCAL_SCOPE, ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &(Node)); /* * However, this is an error -- primarily because the MS * interpreter can't handle a forward reference from the * Scope() operator. */ AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op, Op->Asl.ExternalName); AslError (ASL_ERROR, ASL_MSG_SCOPE_FWD_REF, Op, Op->Asl.ExternalName); goto FinishNode; } AslCoreSubsystemError (Op, Status, "Failure from lookup\n", FALSE); goto Exit; } /* We found a node with this name, now check the type */ switch (Node->Type) { case ACPI_TYPE_LOCAL_SCOPE: case ACPI_TYPE_DEVICE: case ACPI_TYPE_POWER: case ACPI_TYPE_PROCESSOR: case ACPI_TYPE_THERMAL: /* These are acceptable types - they all open a new scope */ break; case ACPI_TYPE_INTEGER: case ACPI_TYPE_STRING: case ACPI_TYPE_BUFFER: /* * These types we will allow, but we will change the type. This * enables some existing code of the form: * * Name (DEB, 0) * Scope (DEB) { ... } * * Which is used to workaround the fact that the MS interpreter * does not allow Scope() forward references. */ sprintf (MsgBuffer, "%s, %s, Changing type to (Scope)", Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type)); AslError (ASL_REMARK, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer); /* * Switch the type */ Node->Type = ACPI_TYPE_ANY; break; default: /* * All other types are an error */ sprintf (MsgBuffer, "%s, %s", Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type)); AslError (ASL_ERROR, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer); /* * However, switch the type to be an actual scope so * that compilation can continue without generating a whole * cascade of additional errors. */ Node->Type = ACPI_TYPE_ANY; break; } Status = AE_OK; goto FinishNode; default: ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); break; } ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Loading name: %s, (%s)\n", Op->Asl.ExternalName, AcpiUtGetTypeName (ObjectType))); /* The name must not already exist */ Flags |= ACPI_NS_ERROR_IF_FOUND; /* * Enter the named type into the internal namespace. We enter the name * as we go downward in the parse tree. Any necessary subobjects that involve * arguments to the opcode must be created as we go back up the parse tree later. */ Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &(Node)); if (ACPI_FAILURE (Status)) { if (Status == AE_ALREADY_EXISTS) { /* The name already exists in this scope */ if (Node->Type == ACPI_TYPE_LOCAL_SCOPE) { Node->Type = (UINT8) ObjectType; Status = AE_OK; } else { AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Op, Op->Asl.ExternalName); Status = AE_OK; goto Exit; } } else { AslCoreSubsystemError (Op, Status, "Failure from lookup %s\n", FALSE); goto Exit; } } FinishNode: /* * Point the parse node to the new namespace node, and point * the Node back to the original Parse node */ Op->Asl.Node = Node; Node->Object = (ACPI_OPERAND_OBJECT *) Op; /* Set the actual data type if appropriate (EXTERNAL term only) */ if (ActualObjectType != ACPI_TYPE_ANY) { Node->Type = (UINT8) ActualObjectType; Node->OwnerId = ASL_EXTERNAL_METHOD; } if (Op->Asl.ParseOpcode == PARSEOP_METHOD) { /* * Get the method argument count from "Extra" and store * it in the OwnerId field of the namespace node */ Node->OwnerId = (UINT16) Op->Asl.Extra; } Exit: return (Status); } /******************************************************************************* * * FUNCTION: LdNamespace1End * * PARAMETERS: ASL_WALK_CALLBACK * * RETURN: Status * * DESCRIPTION: Ascending callback used during the loading of the namespace, * We only need to worry about managing the scope stack here. * ******************************************************************************/ ACPI_STATUS LdNamespace1End ( ACPI_PARSE_OBJECT *Op, UINT32 Level, void *Context) { ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; ACPI_OBJECT_TYPE ObjectType; ACPI_FUNCTION_NAME ("LdNamespace1End"); /* We are only interested in opcodes that have an associated name */ if (!Op->Asl.Namepath) { return (AE_OK); } /* Get the type to determine if we should pop the scope */ if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) && (Op->Asl.CompileFlags == NODE_IS_RESOURCE_DESC)) { /* TBD: Merge into AcpiDsMapNamedOpcodeToDataType */ ObjectType = ACPI_TYPE_LOCAL_RESOURCE; } else { ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); } /* Pop the scope stack */ if (AcpiNsOpensScope (ObjectType)) { ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op [%s] %p\n", AcpiUtGetTypeName (ObjectType), Op->Asl.ParseOpName, Op)); AcpiDsScopeStackPop (WalkState); } return (AE_OK); }