9560b6dea8
- 99% of the code is Intel's ACPICA. The license is compliant with BSD and GNU and virtually all systems that use ACPI use this code, For instance it is part of the Linux kernel. - The only minix specific files are acpi.c osminixxf.c platform/acminix.h and include/minix/acpi.h - At the moment the driver does not register interrupt hooks which I believe is mainly for handling PnP, events like "battery level is low" and power management. Should not be difficult to add it if need be. - The interface to the outside world is virtually non-existent except a trivial message based service for PCI driver to query which device is connected to what IRQ line. This will evolve as more components start using this driver. VM, Scheduler and IOMMU are the possible users right now. - because of dependency on a native 64bit (long long, part of c99) it is compiled only with a gnu-like compilers which in case of Minix includes gcc llvm-gcc and clang
785 lines
24 KiB
C
785 lines
24 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: tbxface - Public interfaces to the ACPI subsystem
|
|
* ACPI table oriented interfaces
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2010, 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 __TBXFACE_C__
|
|
|
|
#include "acpi.h"
|
|
#include "accommon.h"
|
|
#include "acnamesp.h"
|
|
#include "actables.h"
|
|
|
|
#define _COMPONENT ACPI_TABLES
|
|
ACPI_MODULE_NAME ("tbxface")
|
|
|
|
/* Local prototypes */
|
|
|
|
static ACPI_STATUS
|
|
AcpiTbLoadNamespace (
|
|
void);
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiAllocateRootTable
|
|
*
|
|
* PARAMETERS: InitialTableCount - Size of InitialTableArray, in number of
|
|
* ACPI_TABLE_DESC structures
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Allocate a root table array. Used by iASL compiler and
|
|
* AcpiInitializeTables.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiAllocateRootTable (
|
|
UINT32 InitialTableCount)
|
|
{
|
|
|
|
AcpiGbl_RootTableList.MaxTableCount = InitialTableCount;
|
|
AcpiGbl_RootTableList.Flags = ACPI_ROOT_ALLOW_RESIZE;
|
|
|
|
return (AcpiTbResizeRootTableList ());
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiInitializeTables
|
|
*
|
|
* PARAMETERS: InitialTableArray - Pointer to an array of pre-allocated
|
|
* ACPI_TABLE_DESC structures. If NULL, the
|
|
* array is dynamically allocated.
|
|
* InitialTableCount - Size of InitialTableArray, in number of
|
|
* ACPI_TABLE_DESC structures
|
|
* AllowRealloc - Flag to tell Table Manager if resize of
|
|
* pre-allocated array is allowed. Ignored
|
|
* if InitialTableArray is NULL.
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Initialize the table manager, get the RSDP and RSDT/XSDT.
|
|
*
|
|
* NOTE: Allows static allocation of the initial table array in order
|
|
* to avoid the use of dynamic memory in confined environments
|
|
* such as the kernel boot sequence where it may not be available.
|
|
*
|
|
* If the host OS memory managers are initialized, use NULL for
|
|
* InitialTableArray, and the table will be dynamically allocated.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiInitializeTables (
|
|
ACPI_TABLE_DESC *InitialTableArray,
|
|
UINT32 InitialTableCount,
|
|
BOOLEAN AllowResize)
|
|
{
|
|
ACPI_PHYSICAL_ADDRESS RsdpAddress;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiInitializeTables);
|
|
|
|
|
|
/*
|
|
* Set up the Root Table Array
|
|
* Allocate the table array if requested
|
|
*/
|
|
if (!InitialTableArray)
|
|
{
|
|
Status = AcpiAllocateRootTable (InitialTableCount);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Root Table Array has been statically allocated by the host */
|
|
|
|
ACPI_MEMSET (InitialTableArray, 0,
|
|
(ACPI_SIZE) InitialTableCount * sizeof (ACPI_TABLE_DESC));
|
|
|
|
AcpiGbl_RootTableList.Tables = InitialTableArray;
|
|
AcpiGbl_RootTableList.MaxTableCount = InitialTableCount;
|
|
AcpiGbl_RootTableList.Flags = ACPI_ROOT_ORIGIN_UNKNOWN;
|
|
if (AllowResize)
|
|
{
|
|
AcpiGbl_RootTableList.Flags |= ACPI_ROOT_ALLOW_RESIZE;
|
|
}
|
|
}
|
|
|
|
/* Get the address of the RSDP */
|
|
|
|
RsdpAddress = AcpiOsGetRootPointer ();
|
|
if (!RsdpAddress)
|
|
{
|
|
return_ACPI_STATUS (AE_NOT_FOUND);
|
|
}
|
|
|
|
/*
|
|
* Get the root table (RSDT or XSDT) and extract all entries to the local
|
|
* Root Table Array. This array contains the information of the RSDT/XSDT
|
|
* in a common, more useable format.
|
|
*/
|
|
Status = AcpiTbParseRootTable (RsdpAddress);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiInitializeTables)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiReallocateRootTable
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Reallocate Root Table List into dynamic memory. Copies the
|
|
* root list from the previously provided scratch area. Should
|
|
* be called once dynamic memory allocation is available in the
|
|
* kernel
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiReallocateRootTable (
|
|
void)
|
|
{
|
|
ACPI_TABLE_DESC *Tables;
|
|
ACPI_SIZE NewSize;
|
|
ACPI_SIZE CurrentSize;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiReallocateRootTable);
|
|
|
|
|
|
/*
|
|
* Only reallocate the root table if the host provided a static buffer
|
|
* for the table array in the call to AcpiInitializeTables.
|
|
*/
|
|
if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
|
|
{
|
|
return_ACPI_STATUS (AE_SUPPORT);
|
|
}
|
|
|
|
/*
|
|
* Get the current size of the root table and add the default
|
|
* increment to create the new table size.
|
|
*/
|
|
CurrentSize = (ACPI_SIZE)
|
|
AcpiGbl_RootTableList.CurrentTableCount * sizeof (ACPI_TABLE_DESC);
|
|
|
|
NewSize = CurrentSize +
|
|
(ACPI_ROOT_TABLE_SIZE_INCREMENT * sizeof (ACPI_TABLE_DESC));
|
|
|
|
/* Create new array and copy the old array */
|
|
|
|
Tables = ACPI_ALLOCATE_ZEROED (NewSize);
|
|
if (!Tables)
|
|
{
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
ACPI_MEMCPY (Tables, AcpiGbl_RootTableList.Tables, CurrentSize);
|
|
|
|
/*
|
|
* Update the root table descriptor. The new size will be the current
|
|
* number of tables plus the increment, independent of the reserved
|
|
* size of the original table list.
|
|
*/
|
|
AcpiGbl_RootTableList.Tables = Tables;
|
|
AcpiGbl_RootTableList.MaxTableCount =
|
|
AcpiGbl_RootTableList.CurrentTableCount + ACPI_ROOT_TABLE_SIZE_INCREMENT;
|
|
AcpiGbl_RootTableList.Flags =
|
|
ACPI_ROOT_ORIGIN_ALLOCATED | ACPI_ROOT_ALLOW_RESIZE;
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiReallocateRootTable)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetTableHeader
|
|
*
|
|
* PARAMETERS: Signature - ACPI signature of needed table
|
|
* Instance - Which instance (for SSDTs)
|
|
* OutTableHeader - The pointer to the table header to fill
|
|
*
|
|
* RETURN: Status and pointer to mapped table header
|
|
*
|
|
* DESCRIPTION: Finds an ACPI table header.
|
|
*
|
|
* NOTE: Caller is responsible in unmapping the header with
|
|
* AcpiOsUnmapMemory
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetTableHeader (
|
|
char *Signature,
|
|
UINT32 Instance,
|
|
ACPI_TABLE_HEADER *OutTableHeader)
|
|
{
|
|
UINT32 i;
|
|
UINT32 j;
|
|
ACPI_TABLE_HEADER *Header;
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!Signature || !OutTableHeader)
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Walk the root table list */
|
|
|
|
for (i = 0, j = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++)
|
|
{
|
|
if (!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature),
|
|
Signature))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (++j < Instance)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (!AcpiGbl_RootTableList.Tables[i].Pointer)
|
|
{
|
|
if ((AcpiGbl_RootTableList.Tables[i].Flags &
|
|
ACPI_TABLE_ORIGIN_MASK) ==
|
|
ACPI_TABLE_ORIGIN_MAPPED)
|
|
{
|
|
Header = AcpiOsMapMemory (
|
|
AcpiGbl_RootTableList.Tables[i].Address,
|
|
sizeof (ACPI_TABLE_HEADER));
|
|
if (!Header)
|
|
{
|
|
return AE_NO_MEMORY;
|
|
}
|
|
|
|
ACPI_MEMCPY (OutTableHeader, Header, sizeof(ACPI_TABLE_HEADER));
|
|
AcpiOsUnmapMemory (Header, sizeof(ACPI_TABLE_HEADER));
|
|
}
|
|
else
|
|
{
|
|
return AE_NOT_FOUND;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ACPI_MEMCPY (OutTableHeader,
|
|
AcpiGbl_RootTableList.Tables[i].Pointer,
|
|
sizeof(ACPI_TABLE_HEADER));
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
return (AE_NOT_FOUND);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiGetTableHeader)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetTable
|
|
*
|
|
* PARAMETERS: Signature - ACPI signature of needed table
|
|
* Instance - Which instance (for SSDTs)
|
|
* OutTable - Where the pointer to the table is returned
|
|
*
|
|
* RETURN: Status and pointer to table
|
|
*
|
|
* DESCRIPTION: Finds and verifies an ACPI table.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetTable (
|
|
char *Signature,
|
|
UINT32 Instance,
|
|
ACPI_TABLE_HEADER **OutTable)
|
|
{
|
|
UINT32 i;
|
|
UINT32 j;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!Signature || !OutTable)
|
|
{
|
|
return (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Walk the root table list */
|
|
|
|
for (i = 0, j = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++)
|
|
{
|
|
if (!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature),
|
|
Signature))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (++j < Instance)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
*OutTable = AcpiGbl_RootTableList.Tables[i].Pointer;
|
|
}
|
|
|
|
return (Status);
|
|
}
|
|
|
|
return (AE_NOT_FOUND);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiGetTable)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiGetTableByIndex
|
|
*
|
|
* PARAMETERS: TableIndex - Table index
|
|
* Table - Where the pointer to the table is returned
|
|
*
|
|
* RETURN: Status and pointer to the table
|
|
*
|
|
* DESCRIPTION: Obtain a table by an index into the global table list.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiGetTableByIndex (
|
|
UINT32 TableIndex,
|
|
ACPI_TABLE_HEADER **Table)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiGetTableByIndex);
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!Table)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
(void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
|
|
|
|
/* Validate index */
|
|
|
|
if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount)
|
|
{
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
if (!AcpiGbl_RootTableList.Tables[TableIndex].Pointer)
|
|
{
|
|
/* Table is not mapped, map it */
|
|
|
|
Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[TableIndex]);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
*Table = AcpiGbl_RootTableList.Tables[TableIndex].Pointer;
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiGetTableByIndex)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiTbLoadNamespace
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Load the namespace from the DSDT and all SSDTs/PSDTs found in
|
|
* the RSDT/XSDT.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiTbLoadNamespace (
|
|
void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
UINT32 i;
|
|
ACPI_TABLE_HEADER *NewDsdt;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (TbLoadNamespace);
|
|
|
|
|
|
(void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
|
|
|
|
/*
|
|
* Load the namespace. The DSDT is required, but any SSDT and
|
|
* PSDT tables are optional. Verify the DSDT.
|
|
*/
|
|
if (!AcpiGbl_RootTableList.CurrentTableCount ||
|
|
!ACPI_COMPARE_NAME (
|
|
&(AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT].Signature),
|
|
ACPI_SIG_DSDT) ||
|
|
ACPI_FAILURE (AcpiTbVerifyTable (
|
|
&AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT])))
|
|
{
|
|
Status = AE_NO_ACPI_TABLES;
|
|
goto UnlockAndExit;
|
|
}
|
|
|
|
/*
|
|
* Save the DSDT pointer for simple access. This is the mapped memory
|
|
* address. We must take care here because the address of the .Tables
|
|
* array can change dynamically as tables are loaded at run-time. Note:
|
|
* .Pointer field is not validated until after call to AcpiTbVerifyTable.
|
|
*/
|
|
AcpiGbl_DSDT = AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT].Pointer;
|
|
|
|
/*
|
|
* Optionally copy the entire DSDT to local memory (instead of simply
|
|
* mapping it.) There are some BIOSs that corrupt or replace the original
|
|
* DSDT, creating the need for this option. Default is FALSE, do not copy
|
|
* the DSDT.
|
|
*/
|
|
if (AcpiGbl_CopyDsdtLocally)
|
|
{
|
|
NewDsdt = AcpiTbCopyDsdt (ACPI_TABLE_INDEX_DSDT);
|
|
if (NewDsdt)
|
|
{
|
|
AcpiGbl_DSDT = NewDsdt;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Save the original DSDT header for detection of table corruption
|
|
* and/or replacement of the DSDT from outside the OS.
|
|
*/
|
|
ACPI_MEMCPY (&AcpiGbl_OriginalDsdtHeader, AcpiGbl_DSDT,
|
|
sizeof (ACPI_TABLE_HEADER));
|
|
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
|
|
|
|
/* Load and parse tables */
|
|
|
|
Status = AcpiNsLoadTable (ACPI_TABLE_INDEX_DSDT, AcpiGbl_RootNode);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */
|
|
|
|
(void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
|
|
for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
|
|
{
|
|
if ((!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature),
|
|
ACPI_SIG_SSDT) &&
|
|
!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature),
|
|
ACPI_SIG_PSDT)) ||
|
|
ACPI_FAILURE (AcpiTbVerifyTable (
|
|
&AcpiGbl_RootTableList.Tables[i])))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
/* Ignore errors while loading tables, get as many as possible */
|
|
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
|
|
(void) AcpiNsLoadTable (i, AcpiGbl_RootNode);
|
|
(void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
|
|
|
|
UnlockAndExit:
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiLoadTables
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Load the ACPI tables from the RSDT/XSDT
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiLoadTables (
|
|
void)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiLoadTables);
|
|
|
|
|
|
/* Load the namespace from the tables */
|
|
|
|
Status = AcpiTbLoadNamespace ();
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"While loading namespace from ACPI tables"));
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiLoadTables)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiInstallTableHandler
|
|
*
|
|
* PARAMETERS: Handler - Table event handler
|
|
* Context - Value passed to the handler on each event
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Install table event handler
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiInstallTableHandler (
|
|
ACPI_TABLE_HANDLER Handler,
|
|
void *Context)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiInstallTableHandler);
|
|
|
|
|
|
if (!Handler)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Don't allow more than one handler */
|
|
|
|
if (AcpiGbl_TableHandler)
|
|
{
|
|
Status = AE_ALREADY_EXISTS;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Install the handler */
|
|
|
|
AcpiGbl_TableHandler = Handler;
|
|
AcpiGbl_TableHandlerContext = Context;
|
|
|
|
Cleanup:
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiInstallTableHandler)
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiRemoveTableHandler
|
|
*
|
|
* PARAMETERS: Handler - Table event handler that was installed
|
|
* previously.
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Remove table event handler
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiRemoveTableHandler (
|
|
ACPI_TABLE_HANDLER Handler)
|
|
{
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (AcpiRemoveTableHandler);
|
|
|
|
|
|
Status = AcpiUtAcquireMutex (ACPI_MTX_EVENTS);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Make sure that the installed handler is the same */
|
|
|
|
if (!Handler ||
|
|
Handler != AcpiGbl_TableHandler)
|
|
{
|
|
Status = AE_BAD_PARAMETER;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Remove the handler */
|
|
|
|
AcpiGbl_TableHandler = NULL;
|
|
|
|
Cleanup:
|
|
(void) AcpiUtReleaseMutex (ACPI_MTX_EVENTS);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL (AcpiRemoveTableHandler)
|
|
|