/****************************************************************************** * * Module Name: excreate - Named object creation * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2017, 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 "acinterp.h" #include "amlcode.h" #include "acnamesp.h" #define _COMPONENT ACPI_EXECUTER ACPI_MODULE_NAME ("excreate") #ifndef ACPI_NO_METHOD_EXECUTION /******************************************************************************* * * FUNCTION: AcpiExCreateAlias * * PARAMETERS: WalkState - Current state, contains operands * * RETURN: Status * * DESCRIPTION: Create a new named alias * ******************************************************************************/ ACPI_STATUS AcpiExCreateAlias ( ACPI_WALK_STATE *WalkState) { ACPI_NAMESPACE_NODE *TargetNode; ACPI_NAMESPACE_NODE *AliasNode; ACPI_STATUS Status = AE_OK; ACPI_FUNCTION_TRACE (ExCreateAlias); /* Get the source/alias operands (both namespace nodes) */ AliasNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0]; TargetNode = (ACPI_NAMESPACE_NODE *) WalkState->Operands[1]; if ((TargetNode->Type == ACPI_TYPE_LOCAL_ALIAS) || (TargetNode->Type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) { /* * Dereference an existing alias so that we don't create a chain * of aliases. With this code, we guarantee that an alias is * always exactly one level of indirection away from the * actual aliased name. */ TargetNode = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, TargetNode->Object); } /* Ensure that the target node is valid */ if (!TargetNode) { return_ACPI_STATUS (AE_NULL_OBJECT); } /* Construct the alias object (a namespace node) */ switch (TargetNode->Type) { case ACPI_TYPE_METHOD: /* * Control method aliases need to be differentiated with * a special type */ AliasNode->Type = ACPI_TYPE_LOCAL_METHOD_ALIAS; break; default: /* * All other object types. * * The new alias has the type ALIAS and points to the original * NS node, not the object itself. */ AliasNode->Type = ACPI_TYPE_LOCAL_ALIAS; AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode); break; } /* Since both operands are Nodes, we don't need to delete them */ AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiExCreateEvent * * PARAMETERS: WalkState - Current state * * RETURN: Status * * DESCRIPTION: Create a new event object * ******************************************************************************/ ACPI_STATUS AcpiExCreateEvent ( ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_FUNCTION_TRACE (ExCreateEvent); ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_EVENT); if (!ObjDesc) { Status = AE_NO_MEMORY; goto Cleanup; } /* * Create the actual OS semaphore, with zero initial units -- meaning * that the event is created in an unsignalled state */ Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0, &ObjDesc->Event.OsSemaphore); if (ACPI_FAILURE (Status)) { goto Cleanup; } /* Attach object to the Node */ Status = AcpiNsAttachObject ( (ACPI_NAMESPACE_NODE *) WalkState->Operands[0], ObjDesc, ACPI_TYPE_EVENT); Cleanup: /* * Remove local reference to the object (on error, will cause deletion * of both object and semaphore if present.) */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiExCreateMutex * * PARAMETERS: WalkState - Current state * * RETURN: Status * * DESCRIPTION: Create a new mutex object * * Mutex (Name[0], SyncLevel[1]) * ******************************************************************************/ ACPI_STATUS AcpiExCreateMutex ( ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status = AE_OK; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_FUNCTION_TRACE_PTR (ExCreateMutex, ACPI_WALK_OPERANDS); /* Create the new mutex object */ ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_MUTEX); if (!ObjDesc) { Status = AE_NO_MEMORY; goto Cleanup; } /* Create the actual OS Mutex */ Status = AcpiOsCreateMutex (&ObjDesc->Mutex.OsMutex); if (ACPI_FAILURE (Status)) { goto Cleanup; } /* Init object and attach to NS node */ ObjDesc->Mutex.SyncLevel = (UINT8) WalkState->Operands[1]->Integer.Value; ObjDesc->Mutex.Node = (ACPI_NAMESPACE_NODE *) WalkState->Operands[0]; Status = AcpiNsAttachObject ( ObjDesc->Mutex.Node, ObjDesc, ACPI_TYPE_MUTEX); Cleanup: /* * Remove local reference to the object (on error, will cause deletion * of both object and semaphore if present.) */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiExCreateRegion * * PARAMETERS: AmlStart - Pointer to the region declaration AML * AmlLength - Max length of the declaration AML * SpaceId - Address space ID for the region * WalkState - Current state * * RETURN: Status * * DESCRIPTION: Create a new operation region object * ******************************************************************************/ ACPI_STATUS AcpiExCreateRegion ( UINT8 *AmlStart, UINT32 AmlLength, UINT8 SpaceId, ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_NAMESPACE_NODE *Node; ACPI_OPERAND_OBJECT *RegionObj2; ACPI_FUNCTION_TRACE (ExCreateRegion); /* Get the Namespace Node */ Node = WalkState->Op->Common.Node; /* * If the region object is already attached to this node, * just return */ if (AcpiNsGetAttachedObject (Node)) { return_ACPI_STATUS (AE_OK); } /* * Space ID must be one of the predefined IDs, or in the user-defined * range */ if (!AcpiIsValidSpaceId (SpaceId)) { /* * Print an error message, but continue. We don't want to abort * a table load for this exception. Instead, if the region is * actually used at runtime, abort the executing method. */ ACPI_ERROR ((AE_INFO, "Invalid/unknown Address Space ID: 0x%2.2X", SpaceId)); } ACPI_DEBUG_PRINT ((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n", AcpiUtGetRegionName (SpaceId), SpaceId)); /* Create the region descriptor */ ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_REGION); if (!ObjDesc) { Status = AE_NO_MEMORY; goto Cleanup; } /* * Remember location in AML stream of address & length * operands since they need to be evaluated at run time. */ RegionObj2 = AcpiNsGetSecondaryObject (ObjDesc); RegionObj2->Extra.AmlStart = AmlStart; RegionObj2->Extra.AmlLength = AmlLength; RegionObj2->Extra.Method_REG = NULL; if (WalkState->ScopeInfo) { RegionObj2->Extra.ScopeNode = WalkState->ScopeInfo->Scope.Node; } else { RegionObj2->Extra.ScopeNode = Node; } /* Init the region from the operands */ ObjDesc->Region.SpaceId = SpaceId; ObjDesc->Region.Address = 0; ObjDesc->Region.Length = 0; ObjDesc->Region.Node = Node; ObjDesc->Region.Handler = NULL; ObjDesc->Common.Flags &= ~(AOPOBJ_SETUP_COMPLETE | AOPOBJ_REG_CONNECTED | AOPOBJ_OBJECT_INITIALIZED); /* Install the new region object in the parent Node */ Status = AcpiNsAttachObject (Node, ObjDesc, ACPI_TYPE_REGION); Cleanup: /* Remove local reference to the object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiExCreateProcessor * * PARAMETERS: WalkState - Current state * * RETURN: Status * * DESCRIPTION: Create a new processor object and populate the fields * * Processor (Name[0], CpuID[1], PblockAddr[2], PblockLength[3]) * ******************************************************************************/ ACPI_STATUS AcpiExCreateProcessor ( ACPI_WALK_STATE *WalkState) { ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_STATUS Status; ACPI_FUNCTION_TRACE_PTR (ExCreateProcessor, WalkState); /* Create the processor object */ ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PROCESSOR); if (!ObjDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Initialize the processor object from the operands */ ObjDesc->Processor.ProcId = (UINT8) Operand[1]->Integer.Value; ObjDesc->Processor.Length = (UINT8) Operand[3]->Integer.Value; ObjDesc->Processor.Address = (ACPI_IO_ADDRESS) Operand[2]->Integer.Value; /* Install the processor object in the parent Node */ Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], ObjDesc, ACPI_TYPE_PROCESSOR); /* Remove local reference to the object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiExCreatePowerResource * * PARAMETERS: WalkState - Current state * * RETURN: Status * * DESCRIPTION: Create a new PowerResource object and populate the fields * * PowerResource (Name[0], SystemLevel[1], ResourceOrder[2]) * ******************************************************************************/ ACPI_STATUS AcpiExCreatePowerResource ( ACPI_WALK_STATE *WalkState) { ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; ACPI_STATUS Status; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_FUNCTION_TRACE_PTR (ExCreatePowerResource, WalkState); /* Create the power resource object */ ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_POWER); if (!ObjDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } /* Initialize the power object from the operands */ ObjDesc->PowerResource.SystemLevel = (UINT8) Operand[1]->Integer.Value; ObjDesc->PowerResource.ResourceOrder = (UINT16) Operand[2]->Integer.Value; /* Install the power resource object in the parent Node */ Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], ObjDesc, ACPI_TYPE_POWER); /* Remove local reference to the object */ AcpiUtRemoveReference (ObjDesc); return_ACPI_STATUS (Status); } #endif /******************************************************************************* * * FUNCTION: AcpiExCreateMethod * * PARAMETERS: AmlStart - First byte of the method's AML * AmlLength - AML byte count for this method * WalkState - Current state * * RETURN: Status * * DESCRIPTION: Create a new method object * ******************************************************************************/ ACPI_STATUS AcpiExCreateMethod ( UINT8 *AmlStart, UINT32 AmlLength, ACPI_WALK_STATE *WalkState) { ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; ACPI_OPERAND_OBJECT *ObjDesc; ACPI_STATUS Status; UINT8 MethodFlags; ACPI_FUNCTION_TRACE_PTR (ExCreateMethod, WalkState); /* Create a new method object */ ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD); if (!ObjDesc) { Status = AE_NO_MEMORY; goto Exit; } /* Save the method's AML pointer and length */ ObjDesc->Method.AmlStart = AmlStart; ObjDesc->Method.AmlLength = AmlLength; ObjDesc->Method.Node = Operand[0]; /* * Disassemble the method flags. Split off the ArgCount, Serialized * flag, and SyncLevel for efficiency. */ MethodFlags = (UINT8) Operand[1]->Integer.Value; ObjDesc->Method.ParamCount = (UINT8) (MethodFlags & AML_METHOD_ARG_COUNT); /* * Get the SyncLevel. If method is serialized, a mutex will be * created for this method when it is parsed. */ if (MethodFlags & AML_METHOD_SERIALIZED) { ObjDesc->Method.InfoFlags = ACPI_METHOD_SERIALIZED; /* * ACPI 1.0: SyncLevel = 0 * ACPI 2.0: SyncLevel = SyncLevel in method declaration */ ObjDesc->Method.SyncLevel = (UINT8) ((MethodFlags & AML_METHOD_SYNC_LEVEL) >> 4); } /* Attach the new object to the method Node */ Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) Operand[0], ObjDesc, ACPI_TYPE_METHOD); /* Remove local reference to the object */ AcpiUtRemoveReference (ObjDesc); Exit: /* Remove a reference to the operand */ AcpiUtRemoveReference (Operand[1]); return_ACPI_STATUS (Status); }