683 lines
20 KiB
C
683 lines
20 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: tbinstal - ACPI table installation and removal
|
|
* $Revision: 64 $
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2002, 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 __TBINSTAL_C__
|
|
|
|
#include "acpi.h"
|
|
#include "actables.h"
|
|
|
|
|
|
#define _COMPONENT ACPI_TABLES
|
|
ACPI_MODULE_NAME ("tbinstal")
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbMatchSignature
|
|
*
|
|
* PARAMETERS: Signature - Table signature to match
|
|
* TableInfo - Return data
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Compare signature against the list of "ACPI-subsystem-owned"
|
|
* tables (DSDT/FADT/SSDT, etc.) Returns the TableTypeID on match.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiTbMatchSignature (
|
|
NATIVE_CHAR *Signature,
|
|
ACPI_TABLE_DESC *TableInfo,
|
|
UINT8 SearchType)
|
|
{
|
|
NATIVE_UINT i;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("TbMatchSignature");
|
|
|
|
|
|
/*
|
|
* Search for a signature match among the known table types
|
|
*/
|
|
for (i = 0; i < NUM_ACPI_TABLES; i++)
|
|
{
|
|
if ((AcpiGbl_AcpiTableData[i].Flags & ACPI_TABLE_TYPE_MASK) != SearchType)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (!ACPI_STRNCMP (Signature, AcpiGbl_AcpiTableData[i].Signature,
|
|
AcpiGbl_AcpiTableData[i].SigLength))
|
|
{
|
|
/* Found a signature match, return index if requested */
|
|
|
|
if (TableInfo)
|
|
{
|
|
TableInfo->Type = (UINT8) i;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"Table [%4.4s] matched and is a required ACPI table\n",
|
|
(char *) AcpiGbl_AcpiTableData[i].Signature));
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
|
|
"Table [%4.4s] is not a required ACPI table - ignored\n",
|
|
(char *) Signature));
|
|
|
|
return_ACPI_STATUS (AE_TABLE_NOT_SUPPORTED);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbInstallTable
|
|
*
|
|
* PARAMETERS: TableInfo - Return value from AcpiTbGetTableBody
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Load and validate all tables other than the RSDT. The RSDT must
|
|
* already be loaded and validated.
|
|
* Install the table into the global data structs.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiTbInstallTable (
|
|
ACPI_TABLE_DESC *TableInfo)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
ACPI_FUNCTION_TRACE ("TbInstallTable");
|
|
|
|
|
|
/* Lock tables while installing */
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_REPORT_ERROR (("Could not acquire table mutex for [%4.4s], %s\n",
|
|
TableInfo->Pointer->Signature, AcpiFormatException (Status)));
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Install the table into the global data structure */
|
|
|
|
Status = AcpiTbInitTableDescriptor (TableInfo->Type, TableInfo);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_REPORT_ERROR (("Could not install ACPI table [%s], %s\n",
|
|
TableInfo->Pointer->Signature, AcpiFormatException (Status)));
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "%s located at %p\n",
|
|
AcpiGbl_AcpiTableData[TableInfo->Type].Name, TableInfo->Pointer));
|
|
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbRecognizeTable
|
|
*
|
|
* PARAMETERS: TableInfo - Return value from AcpiTbGetTableBody
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Check a table signature for a match against known table types
|
|
*
|
|
* NOTE: All table pointers are validated as follows:
|
|
* 1) Table pointer must point to valid physical memory
|
|
* 2) Signature must be 4 ASCII chars, even if we don't recognize the
|
|
* name
|
|
* 3) Table must be readable for length specified in the header
|
|
* 4) Table checksum must be valid (with the exception of the FACS
|
|
* which has no checksum for some odd reason)
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiTbRecognizeTable (
|
|
ACPI_TABLE_DESC *TableInfo,
|
|
UINT8 SearchType)
|
|
{
|
|
ACPI_TABLE_HEADER *TableHeader;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("TbRecognizeTable");
|
|
|
|
|
|
/* Ensure that we have a valid table pointer */
|
|
|
|
TableHeader = (ACPI_TABLE_HEADER *) TableInfo->Pointer;
|
|
if (!TableHeader)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/*
|
|
* We only "recognize" a limited number of ACPI tables -- namely, the
|
|
* ones that are used by the subsystem (DSDT, FADT, etc.)
|
|
*
|
|
* An AE_TABLE_NOT_SUPPORTED means that the table was not recognized.
|
|
* This can be any one of many valid ACPI tables, it just isn't one of
|
|
* the tables that is consumed by the core subsystem
|
|
*/
|
|
Status = AcpiTbMatchSignature (TableHeader->Signature, TableInfo, SearchType);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiTbValidateTableHeader (TableHeader);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Return the table type and length via the info struct */
|
|
|
|
TableInfo->Length = (ACPI_SIZE) TableHeader->Length;
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbInitTableDescriptor
|
|
*
|
|
* PARAMETERS: TableType - The type of the table
|
|
* TableInfo - A table info struct
|
|
*
|
|
* RETURN: None.
|
|
*
|
|
* DESCRIPTION: Install a table into the global data structs.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiTbInitTableDescriptor (
|
|
ACPI_TABLE_TYPE TableType,
|
|
ACPI_TABLE_DESC *TableInfo)
|
|
{
|
|
ACPI_TABLE_DESC *ListHead;
|
|
ACPI_TABLE_DESC *TableDesc;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_U32 ("TbInitTableDescriptor", TableType);
|
|
|
|
/*
|
|
* Install the table into the global data structure
|
|
*/
|
|
ListHead = &AcpiGbl_AcpiTables[TableType];
|
|
TableDesc = ListHead;
|
|
|
|
/*
|
|
* Two major types of tables: 1) Only one instance is allowed. This
|
|
* includes most ACPI tables such as the DSDT. 2) Multiple instances of
|
|
* the table are allowed. This includes SSDT and PSDTs.
|
|
*/
|
|
if (ACPI_IS_SINGLE_TABLE (AcpiGbl_AcpiTableData[TableType].Flags))
|
|
{
|
|
/*
|
|
* Only one table allowed, and a table has alread been installed
|
|
* at this location, so return an error.
|
|
*/
|
|
if (ListHead->Pointer)
|
|
{
|
|
return_ACPI_STATUS (AE_ALREADY_EXISTS);
|
|
}
|
|
|
|
TableDesc->Count = 1;
|
|
TableDesc->Prev = NULL;
|
|
TableDesc->Next = NULL;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Multiple tables allowed for this table type, we must link
|
|
* the new table in to the list of tables of this type.
|
|
*/
|
|
if (ListHead->Pointer)
|
|
{
|
|
TableDesc = ACPI_MEM_CALLOCATE (sizeof (ACPI_TABLE_DESC));
|
|
if (!TableDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
ListHead->Count++;
|
|
|
|
/* Update the original previous */
|
|
|
|
ListHead->Prev->Next = TableDesc;
|
|
|
|
/* Update new entry */
|
|
|
|
TableDesc->Prev = ListHead->Prev;
|
|
TableDesc->Next = ListHead;
|
|
|
|
/* Update list head */
|
|
|
|
ListHead->Prev = TableDesc;
|
|
}
|
|
else
|
|
{
|
|
TableDesc->Count = 1;
|
|
}
|
|
}
|
|
|
|
/* Common initialization of the table descriptor */
|
|
|
|
TableDesc->Type = TableInfo->Type;
|
|
TableDesc->Pointer = TableInfo->Pointer;
|
|
TableDesc->Length = TableInfo->Length;
|
|
TableDesc->Allocation = TableInfo->Allocation;
|
|
TableDesc->AmlStart = (UINT8 *) (TableDesc->Pointer + 1),
|
|
TableDesc->AmlLength = (UINT32) (TableDesc->Length -
|
|
(UINT32) sizeof (ACPI_TABLE_HEADER));
|
|
TableDesc->TableId = AcpiUtAllocateOwnerId (ACPI_OWNER_TYPE_TABLE);
|
|
TableDesc->LoadedIntoNamespace = FALSE;
|
|
|
|
/*
|
|
* Set the appropriate global pointer (if there is one) to point to the
|
|
* newly installed table
|
|
*/
|
|
if (AcpiGbl_AcpiTableData[TableType].GlobalPtr)
|
|
{
|
|
*(AcpiGbl_AcpiTableData[TableType].GlobalPtr) = TableInfo->Pointer;
|
|
}
|
|
|
|
/* Return Data */
|
|
|
|
TableInfo->TableId = TableDesc->TableId;
|
|
TableInfo->InstalledDesc = TableDesc;
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbDeleteAcpiTables
|
|
*
|
|
* PARAMETERS: None.
|
|
*
|
|
* RETURN: None.
|
|
*
|
|
* DESCRIPTION: Delete all internal ACPI tables
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiTbDeleteAcpiTables (void)
|
|
{
|
|
ACPI_TABLE_TYPE Type;
|
|
|
|
|
|
/*
|
|
* Free memory allocated for ACPI tables
|
|
* Memory can either be mapped or allocated
|
|
*/
|
|
for (Type = 0; Type < NUM_ACPI_TABLES; Type++)
|
|
{
|
|
AcpiTbDeleteAcpiTable (Type);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbDeleteAcpiTable
|
|
*
|
|
* PARAMETERS: Type - The table type to be deleted
|
|
*
|
|
* RETURN: None.
|
|
*
|
|
* DESCRIPTION: Delete an internal ACPI table
|
|
* Locks the ACPI table mutex
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiTbDeleteAcpiTable (
|
|
ACPI_TABLE_TYPE Type)
|
|
{
|
|
|
|
ACPI_FUNCTION_TRACE_U32 ("TbDeleteAcpiTable", Type);
|
|
|
|
|
|
if (Type > ACPI_TABLE_MAX)
|
|
{
|
|
return_VOID;
|
|
}
|
|
|
|
if (ACPI_FAILURE (AcpiUtAcquireMutex (ACPI_MTX_TABLES)))
|
|
{
|
|
return;
|
|
}
|
|
|
|
/* Clear the appropriate "typed" global table pointer */
|
|
|
|
switch (Type)
|
|
{
|
|
case ACPI_TABLE_RSDP:
|
|
AcpiGbl_RSDP = NULL;
|
|
break;
|
|
|
|
case ACPI_TABLE_DSDT:
|
|
AcpiGbl_DSDT = NULL;
|
|
break;
|
|
|
|
case ACPI_TABLE_FADT:
|
|
AcpiGbl_FADT = NULL;
|
|
break;
|
|
|
|
case ACPI_TABLE_FACS:
|
|
AcpiGbl_FACS = NULL;
|
|
break;
|
|
|
|
case ACPI_TABLE_XSDT:
|
|
AcpiGbl_XSDT = NULL;
|
|
break;
|
|
|
|
case ACPI_TABLE_SSDT:
|
|
case ACPI_TABLE_PSDT:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Free the table */
|
|
|
|
AcpiTbFreeAcpiTablesOfType (&AcpiGbl_AcpiTables[Type]);
|
|
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbFreeAcpiTablesOfType
|
|
*
|
|
* PARAMETERS: TableInfo - A table info struct
|
|
*
|
|
* RETURN: None.
|
|
*
|
|
* DESCRIPTION: Free the memory associated with an internal ACPI table
|
|
* Table mutex should be locked.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiTbFreeAcpiTablesOfType (
|
|
ACPI_TABLE_DESC *ListHead)
|
|
{
|
|
ACPI_TABLE_DESC *TableDesc;
|
|
UINT32 Count;
|
|
UINT32 i;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("TbFreeAcpiTablesOfType", ListHead);
|
|
|
|
|
|
/* Get the head of the list */
|
|
|
|
TableDesc = ListHead;
|
|
Count = ListHead->Count;
|
|
|
|
/*
|
|
* Walk the entire list, deleting both the allocated tables
|
|
* and the table descriptors
|
|
*/
|
|
for (i = 0; i < Count; i++)
|
|
{
|
|
TableDesc = AcpiTbUninstallTable (TableDesc);
|
|
}
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbDeleteSingleTable
|
|
*
|
|
* PARAMETERS: TableInfo - A table info struct
|
|
*
|
|
* RETURN: None.
|
|
*
|
|
* DESCRIPTION: Low-level free for a single ACPI table. Handles cases where
|
|
* the table was allocated a buffer or was mapped.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiTbDeleteSingleTable (
|
|
ACPI_TABLE_DESC *TableDesc)
|
|
{
|
|
|
|
if (!TableDesc)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (TableDesc->Pointer)
|
|
{
|
|
/* Valid table, determine type of memory allocation */
|
|
|
|
switch (TableDesc->Allocation)
|
|
{
|
|
case ACPI_MEM_NOT_ALLOCATED:
|
|
break;
|
|
|
|
case ACPI_MEM_ALLOCATED:
|
|
|
|
ACPI_MEM_FREE (TableDesc->Pointer);
|
|
break;
|
|
|
|
case ACPI_MEM_MAPPED:
|
|
|
|
AcpiOsUnmapMemory (TableDesc->Pointer, TableDesc->Length);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbUninstallTable
|
|
*
|
|
* PARAMETERS: TableInfo - A table info struct
|
|
*
|
|
* RETURN: Pointer to the next table in the list (of same type)
|
|
*
|
|
* DESCRIPTION: Free the memory associated with an internal ACPI table that
|
|
* is either installed or has never been installed.
|
|
* Table mutex should be locked.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_TABLE_DESC *
|
|
AcpiTbUninstallTable (
|
|
ACPI_TABLE_DESC *TableDesc)
|
|
{
|
|
ACPI_TABLE_DESC *NextDesc;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR ("AcpiTbUninstallTable", TableDesc);
|
|
|
|
|
|
if (!TableDesc)
|
|
{
|
|
return_PTR (NULL);
|
|
}
|
|
|
|
/* Unlink the descriptor */
|
|
|
|
if (TableDesc->Prev)
|
|
{
|
|
TableDesc->Prev->Next = TableDesc->Next;
|
|
}
|
|
|
|
if (TableDesc->Next)
|
|
{
|
|
TableDesc->Next->Prev = TableDesc->Prev;
|
|
}
|
|
|
|
/* Free the memory allocated for the table itself */
|
|
|
|
AcpiTbDeleteSingleTable (TableDesc);
|
|
|
|
/* Free the table descriptor (Don't delete the list head, tho) */
|
|
|
|
if ((TableDesc->Prev) == (TableDesc->Next))
|
|
{
|
|
NextDesc = NULL;
|
|
|
|
/* Clear the list head */
|
|
|
|
TableDesc->Pointer = NULL;
|
|
TableDesc->Length = 0;
|
|
TableDesc->Count = 0;
|
|
}
|
|
else
|
|
{
|
|
/* Free the table descriptor */
|
|
|
|
NextDesc = TableDesc->Next;
|
|
ACPI_MEM_FREE (TableDesc);
|
|
}
|
|
|
|
return_PTR (NextDesc);
|
|
}
|
|
|
|
|