/******************************************************************************
*
* Module Name: exconfig - Namespace reconfiguration (Load/Unload opcodes)
* $Revision: 72 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2003, 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 __EXCONFIG_C__
#include "acpi.h"
#include "acinterp.h"
#include "amlcode.h"
#include "acnamesp.h"
#include "acevents.h"
#include "actables.h"
#define _COMPONENT ACPI_EXECUTER
ACPI_MODULE_NAME ("exconfig")
/*******************************************************************************
*
* FUNCTION: AcpiExAddTable
*
* PARAMETERS: Table - Pointer to raw table
* ParentNode - Where to load the table (scope)
* DdbHandle - Where to return the table handle.
*
* RETURN: Status
*
* DESCRIPTION: Common function to Install and Load an ACPI table with a
* returned table handle.
*
******************************************************************************/
ACPI_STATUS
AcpiExAddTable (
ACPI_TABLE_HEADER *Table,
ACPI_NAMESPACE_NODE *ParentNode,
ACPI_OPERAND_OBJECT **DdbHandle)
{
ACPI_STATUS Status;
ACPI_TABLE_DESC TableInfo;
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_FUNCTION_TRACE ("ExAddTable");
/* Create an object to be the table handle */
ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
if (!ObjDesc)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Install the new table into the local data structures */
TableInfo.Pointer = Table;
TableInfo.Length = (ACPI_SIZE) Table->Length;
TableInfo.Allocation = ACPI_MEM_ALLOCATED;
Status = AcpiTbInstallTable (&TableInfo);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Add the table to the namespace */
Status = AcpiNsLoadTable (TableInfo.InstalledDesc, ParentNode);
if (ACPI_FAILURE (Status))
{
/* Uninstall table on error */
(void) AcpiTbUninstallTable (TableInfo.InstalledDesc);
goto Cleanup;
}
/* Init the table handle */
ObjDesc->Reference.Opcode = AML_LOAD_OP;
ObjDesc->Reference.Object = TableInfo.InstalledDesc;
*DdbHandle = ObjDesc;
return_ACPI_STATUS (AE_OK);
Cleanup:
AcpiUtRemoveReference (ObjDesc);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExLoadTableOp
*
* PARAMETERS: WalkState - Current state with operands
* ReturnDesc - Where to store the return object
*
* RETURN: Status
*
* DESCRIPTION: Load an ACPI table
*
******************************************************************************/
ACPI_STATUS
AcpiExLoadTableOp (
ACPI_WALK_STATE *WalkState,
ACPI_OPERAND_OBJECT **ReturnDesc)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_TABLE_HEADER *Table;
ACPI_NAMESPACE_NODE *ParentNode;
ACPI_NAMESPACE_NODE *StartNode;
ACPI_NAMESPACE_NODE *ParameterNode = NULL;
ACPI_OPERAND_OBJECT *DdbHandle;
ACPI_FUNCTION_TRACE ("ExLoadTableOp");
#if 0
/*
* Make sure that the signature does not match one of the tables that
* is already loaded.
*/
Status = AcpiTbMatchSignature (Operand[0]->String.Pointer, NULL);
if (Status == AE_OK)
{
/* Signature matched -- don't allow override */
return_ACPI_STATUS (AE_ALREADY_EXISTS);
}
#endif
/* Find the ACPI table */
Status = AcpiTbFindTable (Operand[0]->String.Pointer,
Operand[1]->String.Pointer,
Operand[2]->String.Pointer, &Table);
if (ACPI_FAILURE (Status))
{
if (Status != AE_NOT_FOUND)
{
return_ACPI_STATUS (Status);
}
/* Not found, return an Integer=0 and AE_OK */
DdbHandle = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!DdbHandle)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
DdbHandle->Integer.Value = 0;
*ReturnDesc = DdbHandle;
return_ACPI_STATUS (AE_OK);
}
/* Default nodes */
StartNode = WalkState->ScopeInfo->Scope.Node;
ParentNode = AcpiGbl_RootNode;
/* RootPath (optional parameter) */
if (Operand[3]->String.Length > 0)
{
/*
* Find the node referenced by the RootPathString. This is the
* location within the namespace where the table will be loaded.
*/
Status = AcpiNsGetNodeByPath (Operand[3]->String.Pointer, StartNode,
ACPI_NS_SEARCH_PARENT, &ParentNode);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
/* ParameterPath (optional parameter) */
if (Operand[4]->String.Length > 0)
{
if ((Operand[4]->String.Pointer[0] != '\\') &&
(Operand[4]->String.Pointer[0] != '^'))
{
/*
* Path is not absolute, so it will be relative to the node
* referenced by the RootPathString (or the NS root if omitted)
*/
StartNode = ParentNode;
}
/*
* Find the node referenced by the ParameterPathString
*/
Status = AcpiNsGetNodeByPath (Operand[4]->String.Pointer, StartNode,
ACPI_NS_SEARCH_PARENT, &ParameterNode);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
/* Load the table into the namespace */
Status = AcpiExAddTable (Table, ParentNode, &DdbHandle);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Parameter Data (optional) */
if (ParameterNode)
{
/* Store the parameter data into the optional parameter object */
Status = AcpiExStore (Operand[5], ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, ParameterNode),
WalkState);
if (ACPI_FAILURE (Status))
{
(void) AcpiExUnloadTable (DdbHandle);
}
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExLoadOp
*
* PARAMETERS: ObjDesc - Region or Field where the table will be
* obtained
* Target - Where a handle to the table will be stored
* WalkState - Current state
*
* RETURN: Status
*
* DESCRIPTION: Load an ACPI table from a field or operation region
*
******************************************************************************/
ACPI_STATUS
AcpiExLoadOp (
ACPI_OPERAND_OBJECT *ObjDesc,
ACPI_OPERAND_OBJECT *Target,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *DdbHandle;
ACPI_OPERAND_OBJECT *BufferDesc = NULL;
ACPI_TABLE_HEADER *TablePtr = NULL;
UINT8 *TableDataPtr;
ACPI_TABLE_HEADER TableHeader;
UINT32 i;
ACPI_FUNCTION_TRACE ("ExLoadOp");
/* Object can be either an OpRegion or a Field */
switch (ACPI_GET_OBJECT_TYPE (ObjDesc))
{
case ACPI_TYPE_REGION:
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Region %p %s\n",
ObjDesc, AcpiUtGetObjectTypeName (ObjDesc)));
/* Get the table header */
TableHeader.Length = 0;
for (i = 0; i < sizeof (ACPI_TABLE_HEADER); i++)
{
Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ,
(ACPI_PHYSICAL_ADDRESS) i, 8,
((UINT8 *) &TableHeader) + i);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
/* Allocate a buffer for the entire table */
TablePtr = ACPI_MEM_ALLOCATE (TableHeader.Length);
if (!TablePtr)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Copy the header to the buffer */
ACPI_MEMCPY (TablePtr, &TableHeader, sizeof (ACPI_TABLE_HEADER));
TableDataPtr = ACPI_PTR_ADD (UINT8, TablePtr, sizeof (ACPI_TABLE_HEADER));
/* Get the table from the op region */
for (i = 0; i < TableHeader.Length; i++)
{
Status = AcpiEvAddressSpaceDispatch (ObjDesc, ACPI_READ,
(ACPI_PHYSICAL_ADDRESS) i, 8,
((UINT8 *) TableDataPtr + i));
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
}
break;
case ACPI_TYPE_LOCAL_REGION_FIELD:
case ACPI_TYPE_LOCAL_BANK_FIELD:
case ACPI_TYPE_LOCAL_INDEX_FIELD:
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Field %p %s\n",
ObjDesc, AcpiUtGetObjectTypeName (ObjDesc)));
/*
* The length of the field must be at least as large as the table.
* Read the entire field and thus the entire table. Buffer is
* allocated during the read.
*/
Status = AcpiExReadDataFromField (WalkState, ObjDesc, &BufferDesc);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
TablePtr = ACPI_CAST_PTR (ACPI_TABLE_HEADER, BufferDesc->Buffer.Pointer);
break;
default:
return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
}
/* The table must be either an SSDT or a PSDT */
if ((!ACPI_STRNCMP (TablePtr->Signature,
AcpiGbl_TableData[ACPI_TABLE_PSDT].Signature,
AcpiGbl_TableData[ACPI_TABLE_PSDT].SigLength)) &&
(!ACPI_STRNCMP (TablePtr->Signature,
AcpiGbl_TableData[ACPI_TABLE_SSDT].Signature,
AcpiGbl_TableData[ACPI_TABLE_SSDT].SigLength)))
{
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Table has invalid signature [%4.4s], must be SSDT or PSDT\n",
TablePtr->Signature));
Status = AE_BAD_SIGNATURE;
goto Cleanup;
}
/* Install the new table into the local data structures */
Status = AcpiExAddTable (TablePtr, AcpiGbl_RootNode, &DdbHandle);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Store the DdbHandle into the Target operand */
Status = AcpiExStore (DdbHandle, Target, WalkState);
if (ACPI_FAILURE (Status))
{
(void) AcpiExUnloadTable (DdbHandle);
}
return_ACPI_STATUS (Status);
Cleanup:
if (BufferDesc)
{
AcpiUtRemoveReference (BufferDesc);
}
else
{
ACPI_MEM_FREE (TablePtr);
}
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiExUnloadTable
*
* PARAMETERS: DdbHandle - Handle to a previously loaded table
*
* RETURN: Status
*
* DESCRIPTION: Unload an ACPI table
*
******************************************************************************/
ACPI_STATUS
AcpiExUnloadTable (
ACPI_OPERAND_OBJECT *DdbHandle)
{
ACPI_STATUS Status = AE_NOT_IMPLEMENTED;
ACPI_OPERAND_OBJECT *TableDesc = DdbHandle;
ACPI_TABLE_DESC *TableInfo;
ACPI_FUNCTION_TRACE ("ExUnloadTable");
/*
* Validate the handle
* Although the handle is partially validated in AcpiExReconfiguration(),
* when it calls AcpiExResolveOperands(), the handle is more completely
* validated here.
*/
if ((!DdbHandle) ||
(ACPI_GET_DESCRIPTOR_TYPE (DdbHandle) != ACPI_DESC_TYPE_OPERAND) ||
(ACPI_GET_OBJECT_TYPE (DdbHandle) != ACPI_TYPE_LOCAL_REFERENCE))
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Get the actual table descriptor from the DdbHandle */
TableInfo = (ACPI_TABLE_DESC *) TableDesc->Reference.Object;
/*
* Delete the entire namespace under this table Node
* (Offset contains the TableId)
*/
AcpiNsDeleteNamespaceByOwner (TableInfo->TableId);
/* Delete the table itself */
(void) AcpiTbUninstallTable (TableInfo->InstalledDesc);
/* Delete the table descriptor (DdbHandle) */
AcpiUtRemoveReference (TableDesc);
return_ACPI_STATUS (Status);
}
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