| 0,0 → 1,470 |
|---|
| /******************************************************************************* |
| * |
| * Module Name: utstate - state object support procedures |
| * |
| ******************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 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 __UTSTATE_C__ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| |
| #define _COMPONENT ACPI_UTILITIES |
| ACPI_MODULE_NAME ("utstate") |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtCreatePkgStateAndPush |
| * |
| * PARAMETERS: Object - Object to be added to the new state |
| * Action - Increment/Decrement |
| * StateList - List the state will be added to |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Create a new state and push it |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiUtCreatePkgStateAndPush ( |
| void *InternalObject, |
| void *ExternalObject, |
| UINT16 Index, |
| ACPI_GENERIC_STATE **StateList) |
| { |
| ACPI_GENERIC_STATE *State; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| State = AcpiUtCreatePkgState (InternalObject, ExternalObject, Index); |
| if (!State) |
| { |
| return (AE_NO_MEMORY); |
| } |
| |
| AcpiUtPushGenericState (StateList, State); |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtPushGenericState |
| * |
| * PARAMETERS: ListHead - Head of the state stack |
| * State - State object to push |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Push a state object onto a state stack |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiUtPushGenericState ( |
| ACPI_GENERIC_STATE **ListHead, |
| ACPI_GENERIC_STATE *State) |
| { |
| ACPI_FUNCTION_TRACE (UtPushGenericState); |
| |
| |
| /* Push the state object onto the front of the list (stack) */ |
| |
| State->Common.Next = *ListHead; |
| *ListHead = State; |
| |
| return_VOID; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtPopGenericState |
| * |
| * PARAMETERS: ListHead - Head of the state stack |
| * |
| * RETURN: The popped state object |
| * |
| * DESCRIPTION: Pop a state object from a state stack |
| * |
| ******************************************************************************/ |
| |
| ACPI_GENERIC_STATE * |
| AcpiUtPopGenericState ( |
| ACPI_GENERIC_STATE **ListHead) |
| { |
| ACPI_GENERIC_STATE *State; |
| |
| |
| ACPI_FUNCTION_TRACE (UtPopGenericState); |
| |
| |
| /* Remove the state object at the head of the list (stack) */ |
| |
| State = *ListHead; |
| if (State) |
| { |
| /* Update the list head */ |
| |
| *ListHead = State->Common.Next; |
| } |
| |
| return_PTR (State); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtCreateGenericState |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: The new state object. NULL on failure. |
| * |
| * DESCRIPTION: Create a generic state object. Attempt to obtain one from |
| * the global state cache; If none available, create a new one. |
| * |
| ******************************************************************************/ |
| |
| ACPI_GENERIC_STATE * |
| AcpiUtCreateGenericState ( |
| void) |
| { |
| ACPI_GENERIC_STATE *State; |
| |
| |
| ACPI_FUNCTION_ENTRY (); |
| |
| |
| State = AcpiOsAcquireObject (AcpiGbl_StateCache); |
| if (State) |
| { |
| /* Initialize */ |
| State->Common.DescriptorType = ACPI_DESC_TYPE_STATE; |
| } |
| |
| return (State); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtCreateThreadState |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: New Thread State. NULL on failure |
| * |
| * DESCRIPTION: Create a "Thread State" - a flavor of the generic state used |
| * to track per-thread info during method execution |
| * |
| ******************************************************************************/ |
| |
| ACPI_THREAD_STATE * |
| AcpiUtCreateThreadState ( |
| void) |
| { |
| ACPI_GENERIC_STATE *State; |
| |
| |
| ACPI_FUNCTION_TRACE (UtCreateThreadState); |
| |
| |
| /* Create the generic state object */ |
| |
| State = AcpiUtCreateGenericState (); |
| if (!State) |
| { |
| return_PTR (NULL); |
| } |
| |
| /* Init fields specific to the update struct */ |
| |
| State->Common.DescriptorType = ACPI_DESC_TYPE_STATE_THREAD; |
| State->Thread.ThreadId = AcpiOsGetThreadId (); |
| |
| /* Check for invalid thread ID - zero is very bad, it will break things */ |
| |
| if (!State->Thread.ThreadId) |
| { |
| ACPI_ERROR ((AE_INFO, "Invalid zero ID from AcpiOsGetThreadId")); |
| State->Thread.ThreadId = (ACPI_THREAD_ID) 1; |
| } |
| |
| return_PTR ((ACPI_THREAD_STATE *) State); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtCreateUpdateState |
| * |
| * PARAMETERS: Object - Initial Object to be installed in the state |
| * Action - Update action to be performed |
| * |
| * RETURN: New state object, null on failure |
| * |
| * DESCRIPTION: Create an "Update State" - a flavor of the generic state used |
| * to update reference counts and delete complex objects such |
| * as packages. |
| * |
| ******************************************************************************/ |
| |
| ACPI_GENERIC_STATE * |
| AcpiUtCreateUpdateState ( |
| ACPI_OPERAND_OBJECT *Object, |
| UINT16 Action) |
| { |
| ACPI_GENERIC_STATE *State; |
| |
| |
| ACPI_FUNCTION_TRACE_PTR (UtCreateUpdateState, Object); |
| |
| |
| /* Create the generic state object */ |
| |
| State = AcpiUtCreateGenericState (); |
| if (!State) |
| { |
| return_PTR (NULL); |
| } |
| |
| /* Init fields specific to the update struct */ |
| |
| State->Common.DescriptorType = ACPI_DESC_TYPE_STATE_UPDATE; |
| State->Update.Object = Object; |
| State->Update.Value = Action; |
| |
| return_PTR (State); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtCreatePkgState |
| * |
| * PARAMETERS: Object - Initial Object to be installed in the state |
| * Action - Update action to be performed |
| * |
| * RETURN: New state object, null on failure |
| * |
| * DESCRIPTION: Create a "Package State" |
| * |
| ******************************************************************************/ |
| |
| ACPI_GENERIC_STATE * |
| AcpiUtCreatePkgState ( |
| void *InternalObject, |
| void *ExternalObject, |
| UINT16 Index) |
| { |
| ACPI_GENERIC_STATE *State; |
| |
| |
| ACPI_FUNCTION_TRACE_PTR (UtCreatePkgState, InternalObject); |
| |
| |
| /* Create the generic state object */ |
| |
| State = AcpiUtCreateGenericState (); |
| if (!State) |
| { |
| return_PTR (NULL); |
| } |
| |
| /* Init fields specific to the update struct */ |
| |
| State->Common.DescriptorType = ACPI_DESC_TYPE_STATE_PACKAGE; |
| State->Pkg.SourceObject = (ACPI_OPERAND_OBJECT *) InternalObject; |
| State->Pkg.DestObject = ExternalObject; |
| State->Pkg.Index= Index; |
| State->Pkg.NumPackages = 1; |
| |
| return_PTR (State); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtCreateControlState |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: New state object, null on failure |
| * |
| * DESCRIPTION: Create a "Control State" - a flavor of the generic state used |
| * to support nested IF/WHILE constructs in the AML. |
| * |
| ******************************************************************************/ |
| |
| ACPI_GENERIC_STATE * |
| AcpiUtCreateControlState ( |
| void) |
| { |
| ACPI_GENERIC_STATE *State; |
| |
| |
| ACPI_FUNCTION_TRACE (UtCreateControlState); |
| |
| |
| /* Create the generic state object */ |
| |
| State = AcpiUtCreateGenericState (); |
| if (!State) |
| { |
| return_PTR (NULL); |
| } |
| |
| /* Init fields specific to the control struct */ |
| |
| State->Common.DescriptorType = ACPI_DESC_TYPE_STATE_CONTROL; |
| State->Common.State = ACPI_CONTROL_CONDITIONAL_EXECUTING; |
| |
| return_PTR (State); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtDeleteGenericState |
| * |
| * PARAMETERS: State - The state object to be deleted |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Release a state object to the state cache. NULL state objects |
| * are ignored. |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiUtDeleteGenericState ( |
| ACPI_GENERIC_STATE *State) |
| { |
| ACPI_FUNCTION_TRACE (UtDeleteGenericState); |
| |
| |
| /* Ignore null state */ |
| |
| if (State) |
| { |
| (void) AcpiOsReleaseObject (AcpiGbl_StateCache, State); |
| } |
| return_VOID; |
| } |
| |
| |