freebsd-dev/sys/contrib/dev/acpica/exconfig.c
2001-01-31 09:17:50 +00:00

436 lines
14 KiB
C

/******************************************************************************
*
* Module Name: amconfig - Namespace reconfiguration (Load/Unload opcodes)
* $Revision: 29 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 __AMCONFIG_C__
#include "acpi.h"
#include "acparser.h"
#include "acinterp.h"
#include "amlcode.h"
#include "acnamesp.h"
#include "acevents.h"
#include "actables.h"
#include "acdispat.h"
#define _COMPONENT INTERPRETER
MODULE_NAME ("amconfig")
/*****************************************************************************
*
* FUNCTION: AcpiAmlExecLoadTable
*
* PARAMETERS: RgnDesc - Op region where the table will be obtained
* DdbHandle - Where a handle to the table will be returned
*
* RETURN: Status
*
* DESCRIPTION: Load an ACPI table
*
****************************************************************************/
static ACPI_STATUS
AcpiAmlExecLoadTable (
ACPI_OPERAND_OBJECT *RgnDesc,
ACPI_HANDLE *DdbHandle)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *TableDesc = NULL;
UINT8 *TablePtr;
UINT8 *TableDataPtr;
ACPI_TABLE_HEADER TableHeader;
ACPI_TABLE_DESC TableInfo;
UINT32 i;
FUNCTION_TRACE ("AmlExecLoadTable");
/* TBD: [Unhandled] Object can be either a field or an opregion */
/* Get the table header */
TableHeader.Length = 0;
for (i = 0; i < sizeof (ACPI_TABLE_HEADER); i++)
{
Status = AcpiEvAddressSpaceDispatch (RgnDesc, ADDRESS_SPACE_READ,
(ACPI_PHYSICAL_ADDRESS) i, 8,
(UINT32 *) ((UINT8 *) &TableHeader + i));
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
/* Allocate a buffer for the entire table */
TablePtr = AcpiCmAllocate (TableHeader.Length);
if (!TablePtr)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Copy the header to the buffer */
MEMCPY (TablePtr, &TableHeader, sizeof (ACPI_TABLE_HEADER));
TableDataPtr = TablePtr + sizeof (ACPI_TABLE_HEADER);
/* Get the table from the op region */
for (i = 0; i < TableHeader.Length; i++)
{
Status = AcpiEvAddressSpaceDispatch (RgnDesc, ADDRESS_SPACE_READ,
(ACPI_PHYSICAL_ADDRESS)i, 8,
(UINT32 *) (TableDataPtr + i));
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
}
/* Table must be either an SSDT or a PSDT */
if ((!STRNCMP (TableHeader.Signature,
AcpiGbl_AcpiTableData[ACPI_TABLE_PSDT].Signature,
AcpiGbl_AcpiTableData[ACPI_TABLE_PSDT].SigLength)) &&
(!STRNCMP (TableHeader.Signature,
AcpiGbl_AcpiTableData[ACPI_TABLE_SSDT].Signature,
AcpiGbl_AcpiTableData[ACPI_TABLE_SSDT].SigLength)))
{
DEBUG_PRINT (ACPI_ERROR,
("Table has invalid signature [%4.4s], must be SSDT or PSDT\n",
TableHeader.Signature));
Status = AE_BAD_SIGNATURE;
goto Cleanup;
}
/* Create an object to be the table handle */
TableDesc = AcpiCmCreateInternalObject (INTERNAL_TYPE_REFERENCE);
if (!TableDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
/* Install the new table into the local data structures */
TableInfo.Pointer = (ACPI_TABLE_HEADER *) TablePtr;
TableInfo.Length = TableHeader.Length;
TableInfo.Allocation = ACPI_MEM_ALLOCATED;
TableInfo.BasePointer = TablePtr;
Status = AcpiTbInstallTable (NULL, &TableInfo);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Add the table to the namespace */
/* TBD: [Restructure] - change to whatever new interface is appropriate */
/*
Status = AcpiLoadNamespace ();
if (ACPI_FAILURE (Status))
{
*/
/* TBD: [Errors] Unload the table on failure ? */
/*
goto Cleanup;
}
*/
/* TBD: [Investigate] we need a pointer to the table desc */
/* Init the table handle */
TableDesc->Reference.OpCode = AML_LOAD_OP;
TableDesc->Reference.Object = TableInfo.InstalledDesc;
*DdbHandle = TableDesc;
return_ACPI_STATUS (Status);
Cleanup:
AcpiCmFree (TableDesc);
AcpiCmFree (TablePtr);
return_ACPI_STATUS (Status);
}
/*****************************************************************************
*
* FUNCTION: AcpiAmlExecUnloadTable
*
* PARAMETERS: DdbHandle - Handle to a previously loaded table
*
* RETURN: Status
*
* DESCRIPTION: Unload an ACPI table
*
****************************************************************************/
static ACPI_STATUS
AcpiAmlExecUnloadTable (
ACPI_HANDLE DdbHandle)
{
ACPI_STATUS Status = AE_NOT_IMPLEMENTED;
ACPI_OPERAND_OBJECT *TableDesc = (ACPI_OPERAND_OBJECT *) DdbHandle;
ACPI_TABLE_DESC *TableInfo;
FUNCTION_TRACE ("AmlExecUnloadTable");
/* Validate the handle */
/* Although the handle is partially validated in AcpiAmlExecReconfiguration(),
* when it calls AcpiAmlResolveOperands(), the handle is more completely
* validated here.
*/
if ((!DdbHandle) ||
(!VALID_DESCRIPTOR_TYPE (DdbHandle, ACPI_DESC_TYPE_INTERNAL)) ||
(((ACPI_OPERAND_OBJECT *)DdbHandle)->Common.Type !=
INTERNAL_TYPE_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)
*/
Status = AcpiNsDeleteNamespaceByOwner (TableInfo->TableId);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Delete the table itself */
AcpiTbUninstallTable (TableInfo->InstalledDesc);
/* Delete the table descriptor (DdbHandle) */
AcpiCmRemoveReference (TableDesc);
return_ACPI_STATUS (Status);
}
/*****************************************************************************
*
* FUNCTION: AcpiAmlExecReconfiguration
*
* PARAMETERS: Opcode - The opcode to be executed
* WalkState - Current state of the parse tree walk
*
* RETURN: Status
*
* DESCRIPTION: Reconfiguration opcodes such as LOAD and UNLOAD
*
****************************************************************************/
ACPI_STATUS
AcpiAmlExecReconfiguration (
UINT16 Opcode,
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT *RegionDesc = NULL;
ACPI_HANDLE *DdbHandle;
FUNCTION_TRACE ("AmlExecReconfiguration");
/* Resolve the operands */
Status = AcpiAmlResolveOperands (Opcode, WALK_OPERANDS, WalkState);
DUMP_OPERANDS (WALK_OPERANDS, IMODE_EXECUTE, AcpiPsGetOpcodeName (Opcode),
2, "after AcpiAmlResolveOperands");
/* Get the table handle, common for both opcodes */
Status |= AcpiDsObjStackPopObject ((ACPI_OPERAND_OBJECT **) &DdbHandle,
WalkState);
switch (Opcode)
{
case AML_LOAD_OP:
/* Get the region or field descriptor */
Status |= AcpiDsObjStackPopObject (&RegionDesc, WalkState);
if (ACPI_FAILURE (Status))
{
DEBUG_PRINT (ACPI_ERROR,
("ExecReconfiguration/AML_LOAD_OP: bad operand(s) (%X)\n",
Status));
AcpiCmRemoveReference (RegionDesc);
return_ACPI_STATUS (Status);
}
Status = AcpiAmlExecLoadTable (RegionDesc, DdbHandle);
break;
case AML_UNLOAD_OP:
if (ACPI_FAILURE (Status))
{
DEBUG_PRINT (ACPI_ERROR,
("ExecReconfiguration/AML_UNLOAD_OP: bad operand(s) (%X)\n",
Status));
return_ACPI_STATUS (Status);
}
Status = AcpiAmlExecUnloadTable (DdbHandle);
break;
default:
DEBUG_PRINT (ACPI_ERROR, ("AmlExecReconfiguration: bad opcode=%X\n",
Opcode));
Status = AE_AML_BAD_OPCODE;
break;
}
return_ACPI_STATUS (Status);
}