acpica/source/tools/acpiexec/aetests.c
Robert Moore 738d7b0726 Update copyright notices to the year 2022
Affects all source modules and utility signons.
2022-02-17 13:15:32 -08:00

655 lines
22 KiB
C

/******************************************************************************
*
* Module Name: aetests - Miscellaneous tests for ACPICA public interfaces
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2022, 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 "aecommon.h"
#define _COMPONENT ACPI_TOOLS
ACPI_MODULE_NAME ("aetests")
/* Local prototypes */
static void
AeMutexInterfaces (
void);
static void
AeHardwareInterfaces (
void);
static void
AeTestSleepData (
void);
static void
AeGlobalAddressRangeCheck(
void);
/******************************************************************************
*
* FUNCTION: AeMiscellaneousTests
*
* DESCRIPTION: Various ACPICA validation tests.
*
*****************************************************************************/
void
AeMiscellaneousTests (
void)
{
ACPI_BUFFER ReturnBuf;
char Buffer[32];
ACPI_STATUS Status;
ACPI_STATISTICS Stats;
ACPI_HANDLE Handle;
UINT32 TableIndex;
#if (!ACPI_REDUCED_HARDWARE)
UINT32 Temp;
UINT32 LockHandle1;
UINT32 LockHandle2;
ACPI_VENDOR_UUID Uuid = {0, {ACPI_INIT_UUID (0,0,0,0,0,0,0,0,0,0,0)}};
#endif /* !ACPI_REDUCED_HARDWARE */
Status = AcpiGetHandle (NULL, "\\", &Handle);
ACPI_CHECK_OK (AcpiGetHandle, Status);
if (AcpiGbl_DoInterfaceTests)
{
/*
* Tests for AcpiLoadTable and AcpiUnloadParentTable
*/
/* Attempt unload of DSDT, should fail */
Status = AcpiGetHandle (NULL, "\\_SB_", &Handle);
ACPI_CHECK_OK (AcpiGetHandle, Status);
Status = AcpiUnloadParentTable (Handle);
ACPI_CHECK_STATUS (AcpiUnloadParentTable, Status, AE_TYPE);
/* Load and unload SSDT4 */
Status = AcpiLoadTable ((ACPI_TABLE_HEADER *) Ssdt4Code, &TableIndex);
ACPI_CHECK_OK (AcpiLoadTable, Status);
Status = AcpiUnloadTable (TableIndex);
ACPI_CHECK_OK (AcpiUnloadTable, Status);
/* Re-load SSDT4 */
Status = AcpiLoadTable ((ACPI_TABLE_HEADER *) Ssdt4Code, NULL);
ACPI_CHECK_OK (AcpiLoadTable, Status);
/* Unload and re-load SSDT2 (SSDT2 is in the XSDT) */
Status = AcpiGetHandle (NULL, "\\_T99", &Handle);
ACPI_CHECK_OK (AcpiGetHandle, Status);
Status = AcpiUnloadParentTable (Handle);
ACPI_CHECK_OK (AcpiUnloadParentTable, Status);
Status = AcpiLoadTable ((ACPI_TABLE_HEADER *) Ssdt2Code, NULL);
ACPI_CHECK_OK (AcpiLoadTable, Status);
/* Load OEM9 table (causes table override) */
Status = AcpiLoadTable ((ACPI_TABLE_HEADER *) Ssdt3Code, NULL);
ACPI_CHECK_OK (AcpiLoadTable, Status);
}
AeHardwareInterfaces ();
AeGenericRegisters ();
AeSetupConfiguration (Ssdt3Code);
AeTestBufferArgument();
AeTestPackageArgument ();
AeMutexInterfaces ();
AeTestSleepData ();
/* Test _OSI install/remove */
Status = AcpiInstallInterface ("");
ACPI_CHECK_STATUS (AcpiInstallInterface, Status, AE_BAD_PARAMETER);
Status = AcpiInstallInterface ("TestString");
ACPI_CHECK_OK (AcpiInstallInterface, Status);
Status = AcpiInstallInterface ("TestString");
ACPI_CHECK_STATUS (AcpiInstallInterface, Status, AE_ALREADY_EXISTS);
Status = AcpiRemoveInterface ("Windows 2006");
ACPI_CHECK_OK (AcpiRemoveInterface, Status);
Status = AcpiRemoveInterface ("TestString");
ACPI_CHECK_OK (AcpiRemoveInterface, Status);
Status = AcpiRemoveInterface ("XXXXXX");
ACPI_CHECK_STATUS (AcpiRemoveInterface, Status, AE_NOT_EXIST);
Status = AcpiInstallInterface ("AnotherTestString");
ACPI_CHECK_OK (AcpiInstallInterface, Status);
/* Test _OSI execution */
Status = ExecuteOSI ("Extended Address Space Descriptor", ACPI_UINT64_MAX);
ACPI_CHECK_OK (ExecuteOSI, Status);
Status = ExecuteOSI ("Windows 2001", ACPI_UINT64_MAX);
ACPI_CHECK_OK (ExecuteOSI, Status);
Status = ExecuteOSI ("MichiganTerminalSystem", 0);
ACPI_CHECK_OK (ExecuteOSI, Status);
ReturnBuf.Length = 32;
ReturnBuf.Pointer = Buffer;
Status = AcpiGetName (ACPI_ROOT_OBJECT,
ACPI_FULL_PATHNAME_NO_TRAILING, &ReturnBuf);
ACPI_CHECK_OK (AcpiGetName, Status);
/* Get Devices */
Status = AcpiGetDevices (NULL, AeGetDevices, NULL, NULL);
ACPI_CHECK_OK (AcpiGetDevices, Status);
Status = AcpiGetStatistics (&Stats);
ACPI_CHECK_OK (AcpiGetStatistics, Status);
#if (!ACPI_REDUCED_HARDWARE)
Status = AcpiInstallGlobalEventHandler (AeGlobalEventHandler, NULL);
ACPI_CHECK_OK (AcpiInstallGlobalEventHandler, Status);
/* If Hardware Reduced flag is set, we are all done */
if (AcpiGbl_ReducedHardware)
{
return;
}
Status = AcpiEnableEvent (ACPI_EVENT_GLOBAL, 0);
ACPI_CHECK_OK (AcpiEnableEvent, Status);
/*
* GPEs: Handlers, enable/disable, etc.
*/
Status = AcpiInstallGpeHandler (NULL, 0,
ACPI_GPE_LEVEL_TRIGGERED, AeGpeHandler, NULL);
ACPI_CHECK_OK (AcpiInstallGpeHandler, Status);
Status = AcpiEnableGpe (NULL, 0);
ACPI_CHECK_OK (AcpiEnableGpe, Status);
Status = AcpiRemoveGpeHandler (NULL, 0, AeGpeHandler);
ACPI_CHECK_OK (AcpiRemoveGpeHandler, Status);
Status = AcpiInstallGpeHandler (NULL, 0,
ACPI_GPE_LEVEL_TRIGGERED, AeGpeHandler, NULL);
ACPI_CHECK_OK (AcpiInstallGpeHandler, Status);
Status = AcpiEnableGpe (NULL, 0);
ACPI_CHECK_OK (AcpiEnableGpe, Status);
Status = AcpiSetGpe (NULL, 0, ACPI_GPE_DISABLE);
ACPI_CHECK_OK (AcpiSetGpe, Status);
Status = AcpiSetGpe (NULL, 0, ACPI_GPE_ENABLE);
ACPI_CHECK_OK (AcpiSetGpe, Status);
Status = AcpiInstallGpeHandler (NULL, 1,
ACPI_GPE_EDGE_TRIGGERED, AeGpeHandler, NULL);
ACPI_CHECK_OK (AcpiInstallGpeHandler, Status);
Status = AcpiEnableGpe (NULL, 1);
ACPI_CHECK_OK (AcpiEnableGpe, Status);
Status = AcpiInstallGpeHandler (NULL, 2,
ACPI_GPE_LEVEL_TRIGGERED, AeGpeHandler, NULL);
ACPI_CHECK_OK (AcpiInstallGpeHandler, Status);
Status = AcpiEnableGpe (NULL, 2);
ACPI_CHECK_OK (AcpiEnableGpe, Status);
Status = AcpiInstallGpeHandler (NULL, 3,
ACPI_GPE_EDGE_TRIGGERED, AeGpeHandler, NULL);
ACPI_CHECK_OK (AcpiInstallGpeHandler, Status);
Status = AcpiInstallGpeHandler (NULL, 4,
ACPI_GPE_LEVEL_TRIGGERED, AeGpeHandler, NULL);
ACPI_CHECK_OK (AcpiInstallGpeHandler, Status);
Status = AcpiInstallGpeHandler (NULL, 5,
ACPI_GPE_EDGE_TRIGGERED, AeGpeHandler, NULL);
ACPI_CHECK_OK (AcpiInstallGpeHandler, Status);
Status = AcpiGetHandle (NULL, "\\_SB", &Handle);
ACPI_CHECK_OK (AcpiGetHandle, Status);
Status = AcpiSetupGpeForWake (Handle, NULL, 5);
ACPI_CHECK_OK (AcpiSetupGpeForWake, Status);
Status = AcpiSetGpeWakeMask (NULL, 5, ACPI_GPE_ENABLE);
ACPI_CHECK_OK (AcpiSetGpeWakeMask, Status);
Status = AcpiSetupGpeForWake (Handle, NULL, 6);
ACPI_CHECK_OK (AcpiSetupGpeForWake, Status);
Status = AcpiSetupGpeForWake (ACPI_ROOT_OBJECT, NULL, 6);
ACPI_CHECK_OK (AcpiSetupGpeForWake, Status);
Status = AcpiSetupGpeForWake (Handle, NULL, 9);
ACPI_CHECK_OK (AcpiSetupGpeForWake, Status);
Status = AcpiInstallGpeHandler (NULL, 0x19,
ACPI_GPE_LEVEL_TRIGGERED, AeGpeHandler, NULL);
ACPI_CHECK_OK (AcpiInstallGpeHandler, Status);
Status = AcpiEnableGpe (NULL, 0x19);
ACPI_CHECK_OK (AcpiEnableGpe, Status);
/* GPE block 1 */
Status = AcpiInstallGpeHandler (NULL, 101,
ACPI_GPE_LEVEL_TRIGGERED, AeGpeHandler, NULL);
ACPI_CHECK_OK (AcpiInstallGpeHandler, Status);
Status = AcpiEnableGpe (NULL, 101);
ACPI_CHECK_OK (AcpiEnableGpe, Status);
Status = AcpiDisableGpe (NULL, 101);
ACPI_CHECK_OK (AcpiDisableGpe, Status);
AfInstallGpeBlock ();
/* Here is where the GPEs are actually "enabled" */
Status = AcpiUpdateAllGpes ();
ACPI_CHECK_OK (AcpiUpdateAllGpes, Status);
Status = AcpiGetHandle (NULL, "RSRC", &Handle);
if (ACPI_SUCCESS (Status))
{
ReturnBuf.Length = ACPI_ALLOCATE_BUFFER;
Status = AcpiGetVendorResource (Handle, "_CRS", &Uuid, &ReturnBuf);
if (ACPI_SUCCESS (Status))
{
AcpiOsFree (ReturnBuf.Pointer);
}
}
/* Test global lock */
Status = AcpiAcquireGlobalLock (0xFFFF, &LockHandle1);
ACPI_CHECK_OK (AcpiAcquireGlobalLock, Status);
Status = AcpiAcquireGlobalLock (0x5, &LockHandle2);
ACPI_CHECK_OK (AcpiAcquireGlobalLock, Status);
Status = AcpiReleaseGlobalLock (LockHandle1);
ACPI_CHECK_OK (AcpiReleaseGlobalLock, Status);
Status = AcpiReleaseGlobalLock (LockHandle2);
ACPI_CHECK_OK (AcpiReleaseGlobalLock, Status);
/* Test timer interfaces */
Status = AcpiGetTimerResolution (&Temp);
ACPI_CHECK_OK (AcpiGetTimerResolution, Status);
Status = AcpiGetTimer (&Temp);
ACPI_CHECK_OK (AcpiGetTimer, Status);
Status = AcpiGetTimerDuration (0x1000, 0x2000, &Temp);
ACPI_CHECK_OK (AcpiGetTimerDuration, Status);
#endif /* !ACPI_REDUCED_HARDWARE */
}
/******************************************************************************
*
* FUNCTION: AeMutexInterfaces
*
* DESCRIPTION: Exercise the AML mutex access interfaces
*
*****************************************************************************/
static void
AeMutexInterfaces (
void)
{
ACPI_STATUS Status;
ACPI_HANDLE MutexHandle;
/* Get a handle to an AML mutex */
Status = AcpiGetHandle (NULL, "\\MTX1", &MutexHandle);
if (Status == AE_NOT_FOUND)
{
return;
}
ACPI_CHECK_OK (AcpiGetHandle, Status);
if (ACPI_FAILURE (Status))
{
return;
}
/* Acquire the mutex */
Status = AcpiAcquireMutex (NULL, "\\MTX1", 0xFFFF);
ACPI_CHECK_OK (AcpiAcquireMutex, Status);
if (ACPI_FAILURE (Status))
{
return;
}
/* Release mutex with different parameters */
Status = AcpiReleaseMutex (MutexHandle, NULL);
ACPI_CHECK_OK (AcpiReleaseMutex, Status);
}
/******************************************************************************
*
* FUNCTION: AeHardwareInterfaces
*
* DESCRIPTION: Call various hardware support interfaces
*
*****************************************************************************/
static void
AeHardwareInterfaces (
void)
{
#if (!ACPI_REDUCED_HARDWARE)
ACPI_STATUS Status;
UINT32 Value;
/* If Hardware Reduced flag is set, we are all done */
if (AcpiGbl_ReducedHardware)
{
return;
}
Status = AcpiWriteBitRegister (ACPI_BITREG_WAKE_STATUS, 1);
ACPI_CHECK_OK (AcpiWriteBitRegister, Status);
Status = AcpiWriteBitRegister (ACPI_BITREG_GLOBAL_LOCK_ENABLE, 1);
ACPI_CHECK_OK (AcpiWriteBitRegister, Status);
Status = AcpiWriteBitRegister (ACPI_BITREG_SLEEP_ENABLE, 1);
ACPI_CHECK_OK (AcpiWriteBitRegister, Status);
Status = AcpiWriteBitRegister (ACPI_BITREG_ARB_DISABLE, 1);
ACPI_CHECK_OK (AcpiWriteBitRegister, Status);
Status = AcpiReadBitRegister (ACPI_BITREG_WAKE_STATUS, &Value);
ACPI_CHECK_OK (AcpiReadBitRegister, Status);
Status = AcpiReadBitRegister (ACPI_BITREG_GLOBAL_LOCK_ENABLE, &Value);
ACPI_CHECK_OK (AcpiReadBitRegister, Status);
Status = AcpiReadBitRegister (ACPI_BITREG_SLEEP_ENABLE, &Value);
ACPI_CHECK_OK (AcpiReadBitRegister, Status);
Status = AcpiReadBitRegister (ACPI_BITREG_ARB_DISABLE, &Value);
ACPI_CHECK_OK (AcpiReadBitRegister, Status);
#endif /* !ACPI_REDUCED_HARDWARE */
}
/******************************************************************************
*
* FUNCTION: AeTestSleepData
*
* DESCRIPTION: Exercise the sleep/wake support (_S0, _S1, etc.)
*
*****************************************************************************/
static void
AeTestSleepData (
void)
{
int State;
UINT8 TypeA;
UINT8 TypeB;
ACPI_STATUS Status;
/* Attempt to get sleep data for all known sleep states */
for (State = ACPI_STATE_S0; State <= ACPI_S_STATES_MAX; State++)
{
Status = AcpiGetSleepTypeData ((UINT8) State, &TypeA, &TypeB);
/* All sleep methods are optional */
if (Status != AE_NOT_FOUND)
{
ACPI_CHECK_OK (AcpiGetSleepTypeData, Status);
}
}
}
/******************************************************************************
*
* FUNCTION: AeLateTest
*
* DESCRIPTION: Exercise tests that should be performed before shutdown.
*
*****************************************************************************/
void
AeLateTest (
void)
{
AeGlobalAddressRangeCheck();
}
/******************************************************************************
*
* FUNCTION: AeGlobalAddressRangeCheck
*
* DESCRIPTION: There have been some issues in the past with adding and
* removing items to the global address list from
* OperationRegions declared in control methods. This test loops
* over the list to ensure that dangling pointers do not exist in
* the global address list.
*
*****************************************************************************/
static void
AeGlobalAddressRangeCheck (
void)
{
ACPI_STATUS Status;
ACPI_ADDRESS_RANGE *Current;
ACPI_BUFFER ReturnBuffer;
UINT32 i;
for (i = 0; i < ACPI_ADDRESS_RANGE_MAX; i++)
{
Current = AcpiGbl_AddressRangeList[i];
while (Current)
{
ReturnBuffer.Length = ACPI_ALLOCATE_BUFFER;
Status = AcpiGetName (Current->RegionNode, ACPI_SINGLE_NAME, &ReturnBuffer);
ACPI_CHECK_OK (AcpiGetname, Status);
AcpiOsFree (ReturnBuffer.Pointer);
Current = Current->Next;
}
}
}