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+/******************************************************************************
+ *
+ * Module Name: excreate - Named object creation
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * 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 MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ */
+
+#define __EXCREATE_C__
+
+#include <contrib/dev/acpica/include/acpi.h>
+#include <contrib/dev/acpica/include/accommon.h>
+#include <contrib/dev/acpica/include/acinterp.h>
+#include <contrib/dev/acpica/include/amlcode.h>
+#include <contrib/dev/acpica/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);
+ }
+
+ /*
+ * For objects that can never change (i.e., the NS node will
+ * permanently point to the same object), we can simply attach
+ * the object to the new NS node. For other objects (such as
+ * Integers, buffers, etc.), we have to point the Alias node
+ * to the original Node.
+ */
+ switch (TargetNode->Type)
+ {
+
+ /* For these types, the sub-object can change dynamically via a Store */
+
+ case ACPI_TYPE_INTEGER:
+ case ACPI_TYPE_STRING:
+ case ACPI_TYPE_BUFFER:
+ case ACPI_TYPE_PACKAGE:
+ case ACPI_TYPE_BUFFER_FIELD:
+ /*
+ * These types open a new scope, so we need the NS node in order to access
+ * any children.
+ */
+ case ACPI_TYPE_DEVICE:
+ case ACPI_TYPE_POWER:
+ case ACPI_TYPE_PROCESSOR:
+ case ACPI_TYPE_THERMAL:
+ case ACPI_TYPE_LOCAL_SCOPE:
+ /*
+ * 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;
+
+ case ACPI_TYPE_METHOD:
+ /*
+ * Control method aliases need to be differentiated
+ */
+ AliasNode->Type = ACPI_TYPE_LOCAL_METHOD_ALIAS;
+ AliasNode->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode);
+ break;
+
+ default:
+
+ /* Attach the original source object to the new Alias Node */
+
+ /*
+ * The new alias assumes the type of the target, and it points
+ * to the same object. The reference count of the object has an
+ * additional reference to prevent deletion out from under either the
+ * target node or the alias Node
+ */
+ Status = AcpiNsAttachObject (AliasNode,
+ AcpiNsGetAttachedObject (TargetNode), TargetNode->Type);
+ break;
+ }
+
+ /* Since both operands are Nodes, we don't need to delete them */
+
+ 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 = ObjDesc->Common.NextObject;
+ RegionObj2->Extra.AmlStart = AmlStart;
+ RegionObj2->Extra.AmlLength = AmlLength;
+ 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;
+
+ /* 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;
+
+ /*
+ * 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);
+}
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