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ACPICA: All FADT-related functions moved to this file

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/******************************************************************************
*
* Module Name: tbfadt - FADT table utilities
* $Revision: 1.1 $
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2006, 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 __TBFADT_C__
#include "acpi.h"
#include "actables.h"
#define _COMPONENT ACPI_TABLES
ACPI_MODULE_NAME ("tbfadt")
/* Local prototypes */
static void inline
AcpiTbInitGenericAddress (
ACPI_GENERIC_ADDRESS *NewGasStruct,
UINT8 BitWidth,
UINT64 Address);
static void
AcpiTbFadtRegisterError (
char *RegisterName,
UINT32 Value);
static void
AcpiTbConvertFadt (
void);
static void
AcpiTbValidateFadt (
void);
/* Table used for conversion of FADT to common format */
typedef struct acpi_fadt_conversion
{
UINT8 Target;
UINT8 Source;
UINT8 Length;
} ACPI_FADT_CONVERSION;
static ACPI_FADT_CONVERSION FadtConversionTable[] =
{
{ACPI_FADT_OFFSET (XPm1aEventBlock), ACPI_FADT_OFFSET (Pm1aEventBlock), ACPI_FADT_OFFSET (Pm1EventLength)},
{ACPI_FADT_OFFSET (XPm1bEventBlock), ACPI_FADT_OFFSET (Pm1bEventBlock), ACPI_FADT_OFFSET (Pm1EventLength)},
{ACPI_FADT_OFFSET (XPm1aControlBlock), ACPI_FADT_OFFSET (Pm1aControlBlock), ACPI_FADT_OFFSET (Pm1ControlLength)},
{ACPI_FADT_OFFSET (XPm1bControlBlock), ACPI_FADT_OFFSET (Pm1bControlBlock), ACPI_FADT_OFFSET (Pm1ControlLength)},
{ACPI_FADT_OFFSET (XPm2ControlBlock), ACPI_FADT_OFFSET (Pm2ControlBlock), ACPI_FADT_OFFSET (Pm2ControlLength)},
{ACPI_FADT_OFFSET (XPmTimerBlock), ACPI_FADT_OFFSET (PmTimerBlock), ACPI_FADT_OFFSET (PmTimerLength)},
{ACPI_FADT_OFFSET (XGpe0Block), ACPI_FADT_OFFSET (Gpe0Block), ACPI_FADT_OFFSET (Gpe0BlockLength)},
{ACPI_FADT_OFFSET (XGpe1Block), ACPI_FADT_OFFSET (Gpe1Block), ACPI_FADT_OFFSET (Gpe1BlockLength)}
};
#define ACPI_FADT_CONVERSION_ENTRIES (sizeof (FadtConversionTable) / sizeof (ACPI_FADT_CONVERSION))
/*******************************************************************************
*
* FUNCTION: AcpiTbInitGenericAddress
*
* PARAMETERS: NewGasStruct - GAS struct to be initialized
* BitWidth - Width of this register
* Address - Address of the register
*
* RETURN: None
*
* DESCRIPTION: Initialize a GAS structure.
*
******************************************************************************/
static void inline
AcpiTbInitGenericAddress (
ACPI_GENERIC_ADDRESS *NewGasStruct,
UINT8 BitWidth,
UINT64 Address)
{
ACPI_MOVE_64_TO_64 (&NewGasStruct->Address, &Address);
NewGasStruct->SpaceId = ACPI_ADR_SPACE_SYSTEM_IO;
NewGasStruct->BitWidth = BitWidth;
NewGasStruct->BitOffset = 0;
NewGasStruct->AccessWidth = 0;
}
/*******************************************************************************
*
* FUNCTION: AcpiTbParseFadt
*
* PARAMETERS: TableIndex - Index for the FADT
* Flags - Flags
*
* RETURN: None
*
* DESCRIPTION: Initialize the FADT, DSDT and FACS tables
* (FADT contains the addresses of the DSDT and FACS)
*
******************************************************************************/
void
AcpiTbParseFadt (
ACPI_NATIVE_UINT TableIndex,
UINT8 Flags)
{
UINT32 Length;
ACPI_TABLE_HEADER *Table;
/*
* Special case for the FADT because of multiple versions and the fact
* that it contains pointers to both the DSDT and FACS tables.
*
* Get a local copy of the FADT and convert it to a common format
* Map entire FADT, assumed to be smaller than one page.
*/
Length = AcpiGbl_RootTableList.Tables[TableIndex].Length;
Table = AcpiOsMapMemory (AcpiGbl_RootTableList.Tables[TableIndex].Address, Length);
if (!Table)
{
return;
}
/*
* Validate the FADT checksum before we copy the table. Ignore
* checksum error as we want to try to get the DSDT and FACS.
*/
(void) AcpiTbVerifyChecksum (Table, Length);
/* Copy the entire FADT locally */
ACPI_MEMSET (&AcpiGbl_FADT, 0, sizeof (ACPI_TABLE_FADT));
ACPI_MEMCPY (&AcpiGbl_FADT, Table,
ACPI_MIN (Length, sizeof (ACPI_TABLE_FADT)));
AcpiOsUnmapMemory (Table, Length);
/* Convert local FADT to the common internal format */
AcpiTbConvertFadt ();
/* Extract the DSDT and FACS tables from the FADT */
AcpiTbInstallTable ((ACPI_PHYSICAL_ADDRESS) AcpiGbl_FADT.XDsdt,
Flags, ACPI_SIG_DSDT, ACPI_TABLE_INDEX_DSDT);
AcpiTbInstallTable ((ACPI_PHYSICAL_ADDRESS) AcpiGbl_FADT.XFacs,
Flags, ACPI_SIG_FACS, ACPI_TABLE_INDEX_FACS);
/* Validate important FADT values */
AcpiTbValidateFadt ();
}
/*******************************************************************************
*
* FUNCTION: AcpiTbConvertFadt
*
* PARAMETERS: None, uses AcpiGbl_FADT
*
* RETURN: None
*
* DESCRIPTION: Converts all versions of the FADT to a common internal format.
*
* NOTE: AcpiGbl_FADT must be of size (ACPI_TABLE_FADT), and must contain
* a copy of the actual FADT.
*
* ACPICA will use the "X" fields of the FADT for all addresses.
*
* "X" fields are optional extensions to the original V1.0 fields. Even if
* they are present in the structure, they can be optionally not used by
* setting them to zero. Therefore, we must selectively expand V1.0 fields
* if the corresponding X field is zero.
*
* For ACPI 1.0 FADTs, all address fields are expanded to the corresponding
* "X" fields.
*
* For ACPI 2.0 FADTs, any "X" fields that are NULL are filled in by
* expanding the corresponding ACPI 1.0 field.
*
******************************************************************************/
static void
AcpiTbConvertFadt (
void)
{
UINT8 Pm1RegisterLength;
ACPI_GENERIC_ADDRESS *Target;
ACPI_NATIVE_UINT i;
/* Expand the FACS and DSDT addresses as necessary */
if (!AcpiGbl_FADT.XFacs)
{
AcpiGbl_FADT.XFacs = (UINT64) AcpiGbl_FADT.Facs;
}
if (!AcpiGbl_FADT.XDsdt)
{
AcpiGbl_FADT.XDsdt = (UINT64) AcpiGbl_FADT.Dsdt;
}
/*
* Expand the 32-bit V1.0 addresses to the 64-bit "X" generic address
* structures as necessary.
*/
for (i = 0; i < ACPI_FADT_CONVERSION_ENTRIES; i++)
{
Target = ACPI_ADD_PTR (
ACPI_GENERIC_ADDRESS, &AcpiGbl_FADT, FadtConversionTable[i].Target);
/* Expand only if the X target is null */
if (!Target->Address)
{
AcpiTbInitGenericAddress (Target,
*ACPI_ADD_PTR (UINT8, &AcpiGbl_FADT, FadtConversionTable[i].Length),
(UINT64) *ACPI_ADD_PTR (UINT32, &AcpiGbl_FADT, FadtConversionTable[i].Source));
}
}
/*
* Calculate separate GAS structs for the PM1 Enable registers.
* These addresses do not appear (directly) in the FADT, so it is
* useful to calculate them once, here.
*
* The PM event blocks are split into two register blocks, first is the
* PM Status Register block, followed immediately by the PM Enable Register
* block. Each is of length (Pm1EventLength/2)
*/
Pm1RegisterLength = (UINT8) ACPI_DIV_2 (AcpiGbl_FADT.Pm1EventLength);
/* PM1A is required */
AcpiTbInitGenericAddress (&AcpiGbl_XPm1aEnable, Pm1RegisterLength,
(AcpiGbl_FADT.XPm1aEventBlock.Address + Pm1RegisterLength));
/* PM1B is optional; leave null if not present */
if (AcpiGbl_FADT.XPm1bEventBlock.Address)
{
AcpiTbInitGenericAddress (&AcpiGbl_XPm1bEnable, Pm1RegisterLength,
(AcpiGbl_FADT.XPm1bEventBlock.Address + Pm1RegisterLength));
}
/* Global FADT is the new common V2.0 FADT */
AcpiGbl_FADT.Header.Length = sizeof (ACPI_TABLE_FADT);
}
/******************************************************************************
*
* FUNCTION: AcpiTbValidateFadt
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Validate various ACPI registers in the FADT
*
******************************************************************************/
static void
AcpiTbValidateFadt (
void)
{
/* These length fields have a minimum value */
if (AcpiGbl_FADT.Pm1EventLength < 4)
{
AcpiTbFadtRegisterError ("Pm1EventLength",
(UINT32) AcpiGbl_FADT.Pm1EventLength);
}
if (AcpiGbl_FADT.PmTimerLength < 4)
{
AcpiTbFadtRegisterError ("PmTimerLength",
(UINT32) AcpiGbl_FADT.PmTimerLength);
}
/* These length and address fields must be non-zero */
if (!AcpiGbl_FADT.Pm1ControlLength)
{
AcpiTbFadtRegisterError ("Pm1ControlLength", 0);
}
if (!ACPI_VALID_ADDRESS (AcpiGbl_FADT.XPm1aEventBlock.Address))
{
AcpiTbFadtRegisterError ("XPm1aEventBlock.Address", 0);
}
if (!ACPI_VALID_ADDRESS (AcpiGbl_FADT.XPm1aControlBlock.Address))
{
AcpiTbFadtRegisterError ("XPm1aControlBlock.Address", 0);
}
if (!ACPI_VALID_ADDRESS (AcpiGbl_FADT.XPmTimerBlock.Address))
{
AcpiTbFadtRegisterError ("XPmTimerBlock.Address", 0);
}
/* If PM2 block is present, must have non-zero length */
if ((ACPI_VALID_ADDRESS (AcpiGbl_FADT.XPm2ControlBlock.Address) &&
!AcpiGbl_FADT.Pm2ControlLength))
{
AcpiTbFadtRegisterError ("Pm2ControlLength",
(UINT32) AcpiGbl_FADT.Pm2ControlLength);
}
/* Length of any valid GPE blocks must be a multiple of 2 */
if (ACPI_VALID_ADDRESS (AcpiGbl_FADT.XGpe0Block.Address) &&
(AcpiGbl_FADT.Gpe0BlockLength & 1))
{
AcpiTbFadtRegisterError ("Gpe0BlockLength",
(UINT32) AcpiGbl_FADT.Gpe0BlockLength);
}
if (ACPI_VALID_ADDRESS (AcpiGbl_FADT.XGpe1Block.Address) &&
(AcpiGbl_FADT.Gpe1BlockLength & 1))
{
AcpiTbFadtRegisterError ("Gpe1BlockLength",
(UINT32) AcpiGbl_FADT.Gpe1BlockLength);
}
}
/*******************************************************************************
*
* FUNCTION: AcpiTbFadtRegisterError
*
* PARAMETERS: RegisterName - Pointer to string identifying register
* Value - Actual register contents value
*
* RETURN: None
*
* DESCRIPTION: Display FADT warning message
*
******************************************************************************/
static void
AcpiTbFadtRegisterError (
char *RegisterName,
UINT32 Value)
{
ACPI_WARNING ((AE_INFO, "Invalid FADT value \"%s\" = %X",
RegisterName, Value));
}