Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/sys/dev/acpi/acpica/Subsystem/tbinstal.c

666 lines
19 KiB
C
Raw Blame History

/******************************************************************************
*
* Module Name: tbinstal - ACPI table installation and removal
* xRevision: 42 $
*
*****************************************************************************/
/******************************************************************************
*
* 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 __TBINSTAL_C__
#include "acpi.h"
#include "achware.h"
#include "actables.h"
#define _COMPONENT ACPI_TABLES
MODULE_NAME ("tbinstal")
/*******************************************************************************
*
* FUNCTION: AcpiTbInstallTable
*
* PARAMETERS: TablePtr - Input buffer pointer, optional
* TableInfo - Return value from AcpiTbGetTable
*
* 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_HEADER *TablePtr,
ACPI_TABLE_DESC *TableInfo)
{
ACPI_STATUS Status;
FUNCTION_TRACE ("TbInstallTable");
/*
* Check the table signature and make sure it is recognized
* Also checks the header checksum
*/
Status = AcpiTbRecognizeTable (TablePtr, TableInfo);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Lock tables while installing */
AcpiUtAcquireMutex (ACPI_MTX_TABLES);
/* Install the table into the global data structure */
Status = AcpiTbInitTableDescriptor (TableInfo->Type, TableInfo);
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "%s located at %p\n",
AcpiGbl_AcpiTableData[TableInfo->Type].Name, TableInfo->Pointer));
AcpiUtReleaseMutex (ACPI_MTX_TABLES);
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiTbRecognizeTable
*
* PARAMETERS: TablePtr - Input buffer pointer, optional
* TableInfo - Return value from AcpiTbGetTable
*
* 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_HEADER *TablePtr,
ACPI_TABLE_DESC *TableInfo)
{
ACPI_TABLE_HEADER *TableHeader;
ACPI_STATUS Status;
ACPI_TABLE_TYPE TableType = 0;
UINT32 i;
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);
}
/*
* Search for a signature match among the known table types
* Start at index one -> Skip the RSDP
*/
Status = AE_SUPPORT;
for (i = 1; i < NUM_ACPI_TABLES; i++)
{
if (!STRNCMP (TableHeader->Signature,
AcpiGbl_AcpiTableData[i].Signature,
AcpiGbl_AcpiTableData[i].SigLength))
{
/*
* Found a signature match, get the pertinent info from the
* TableData structure
*/
TableType = i;
Status = AcpiGbl_AcpiTableData[i].Status;
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Found %4.4s\n",
AcpiGbl_AcpiTableData[i].Signature));
break;
}
}
/* Return the table type and length via the info struct */
TableInfo->Type = (UINT8) TableType;
TableInfo->Length = TableHeader->Length;
/*
* Validate checksum for _most_ tables,
* even the ones whose signature we don't recognize
*/
if (TableType != ACPI_TABLE_FACS)
{
/* But don't abort if the checksum is wrong */
/* TBD: [Future] make this a configuration option? */
AcpiTbVerifyTableChecksum (TableHeader);
}
/*
* An AE_SUPPORT means that the table was not recognized.
* We basically ignore this; just print a debug message
*/
if (Status == AE_SUPPORT)
{
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"Unsupported table %s (Type %X) was found and discarded\n",
AcpiGbl_AcpiTableData[TableType].Name, TableType));
}
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;
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 (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_EXIST);
}
TableDesc->Count = 1;
}
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->Pointer = TableInfo->Pointer;
TableDesc->BasePointer = TableInfo->BasePointer;
TableDesc->Length = TableInfo->Length;
TableDesc->Allocation = TableInfo->Allocation;
TableDesc->AmlPointer = (UINT8 *) (TableDesc->Pointer + 1),
TableDesc->AmlLength = (UINT32) (TableDesc->Length -
(UINT32) sizeof (ACPI_TABLE_HEADER));
TableDesc->TableId = AcpiUtAllocateOwnerId (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)
{
FUNCTION_TRACE_U32 ("TbDeleteAcpiTable", Type);
if (Type > ACPI_TABLE_MAX)
{
return_VOID;
}
AcpiUtAcquireMutex (ACPI_MTX_TABLES);
/* Free the table */
AcpiTbFreeAcpiTablesOfType (&AcpiGbl_AcpiTables[Type]);
/* 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;
}
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;
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->BasePointer);
break;
case ACPI_MEM_MAPPED:
AcpiOsUnmapMemory (TableDesc->BasePointer, TableDesc->Length);
break;
}
}
}
/*******************************************************************************
*
* FUNCTION: AcpiTbUninstallTable
*
* PARAMETERS: TableInfo - A table info struct
*
* RETURN: None.
*
* 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;
FUNCTION_TRACE_PTR ("TbDeleteSingleTable", 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);
}
Reference in New Issue View Git Blame Copy Permalink