498 lines
16 KiB
C
498 lines
16 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: utids - support for device IDs - HID, UID, CID
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 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 __UTIDS_C__
|
|
|
|
#include "acpi.h"
|
|
#include "accommon.h"
|
|
#include "acinterp.h"
|
|
|
|
|
|
#define _COMPONENT ACPI_UTILITIES
|
|
ACPI_MODULE_NAME ("utids")
|
|
|
|
/* Local prototypes */
|
|
|
|
static void
|
|
AcpiUtCopyIdString (
|
|
char *Destination,
|
|
char *Source);
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtCopyIdString
|
|
*
|
|
* PARAMETERS: Destination - Where to copy the string
|
|
* Source - Source string
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Copies an ID string for the _HID, _CID, and _UID methods.
|
|
* Performs removal of a leading asterisk if present -- workaround
|
|
* for a known issue on a bunch of machines.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
AcpiUtCopyIdString (
|
|
char *Destination,
|
|
char *Source)
|
|
{
|
|
|
|
/*
|
|
* Workaround for ID strings that have a leading asterisk. This construct
|
|
* is not allowed by the ACPI specification (ID strings must be
|
|
* alphanumeric), but enough existing machines have this embedded in their
|
|
* ID strings that the following code is useful.
|
|
*/
|
|
if (*Source == '*')
|
|
{
|
|
Source++;
|
|
}
|
|
|
|
/* Do the actual copy */
|
|
|
|
ACPI_STRCPY (Destination, Source);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtExecute_HID
|
|
*
|
|
* PARAMETERS: DeviceNode - Node for the device
|
|
* ReturnId - Where the string HID is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Executes the _HID control method that returns the hardware
|
|
* ID of the device. The HID is either an 32-bit encoded EISAID
|
|
* Integer or a String. A string is always returned. An EISAID
|
|
* is converted to a string.
|
|
*
|
|
* NOTE: Internal function, no parameter validation
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtExecute_HID (
|
|
ACPI_NAMESPACE_NODE *DeviceNode,
|
|
ACPI_DEVICE_ID **ReturnId)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_DEVICE_ID *Hid;
|
|
UINT32 Length;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (UtExecute_HID);
|
|
|
|
|
|
Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__HID,
|
|
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Get the size of the String to be returned, includes null terminator */
|
|
|
|
if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER)
|
|
{
|
|
Length = ACPI_EISAID_STRING_SIZE;
|
|
}
|
|
else
|
|
{
|
|
Length = ObjDesc->String.Length + 1;
|
|
}
|
|
|
|
/* Allocate a buffer for the HID */
|
|
|
|
Hid = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_DEVICE_ID) + (ACPI_SIZE) Length);
|
|
if (!Hid)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Area for the string starts after DEVICE_ID struct */
|
|
|
|
Hid->String = ACPI_ADD_PTR (char, Hid, sizeof (ACPI_DEVICE_ID));
|
|
|
|
/* Convert EISAID to a string or simply copy existing string */
|
|
|
|
if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER)
|
|
{
|
|
AcpiExEisaIdToString (Hid->String, ObjDesc->Integer.Value);
|
|
}
|
|
else
|
|
{
|
|
AcpiUtCopyIdString (Hid->String, ObjDesc->String.Pointer);
|
|
}
|
|
|
|
Hid->Length = Length;
|
|
*ReturnId = Hid;
|
|
|
|
|
|
Cleanup:
|
|
|
|
/* On exit, we must delete the return object */
|
|
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtExecute_UID
|
|
*
|
|
* PARAMETERS: DeviceNode - Node for the device
|
|
* ReturnId - Where the string UID is returned
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Executes the _UID control method that returns the unique
|
|
* ID of the device. The UID is either a 64-bit Integer (NOT an
|
|
* EISAID) or a string. Always returns a string. A 64-bit integer
|
|
* is converted to a decimal string.
|
|
*
|
|
* NOTE: Internal function, no parameter validation
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtExecute_UID (
|
|
ACPI_NAMESPACE_NODE *DeviceNode,
|
|
ACPI_DEVICE_ID **ReturnId)
|
|
{
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_DEVICE_ID *Uid;
|
|
UINT32 Length;
|
|
ACPI_STATUS Status;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (UtExecute_UID);
|
|
|
|
|
|
Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__UID,
|
|
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING, &ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Get the size of the String to be returned, includes null terminator */
|
|
|
|
if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER)
|
|
{
|
|
Length = ACPI_MAX64_DECIMAL_DIGITS + 1;
|
|
}
|
|
else
|
|
{
|
|
Length = ObjDesc->String.Length + 1;
|
|
}
|
|
|
|
/* Allocate a buffer for the UID */
|
|
|
|
Uid = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_DEVICE_ID) + (ACPI_SIZE) Length);
|
|
if (!Uid)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Area for the string starts after DEVICE_ID struct */
|
|
|
|
Uid->String = ACPI_ADD_PTR (char, Uid, sizeof (ACPI_DEVICE_ID));
|
|
|
|
/* Convert an Integer to string, or just copy an existing string */
|
|
|
|
if (ObjDesc->Common.Type == ACPI_TYPE_INTEGER)
|
|
{
|
|
AcpiExIntegerToString (Uid->String, ObjDesc->Integer.Value);
|
|
}
|
|
else
|
|
{
|
|
AcpiUtCopyIdString (Uid->String, ObjDesc->String.Pointer);
|
|
}
|
|
|
|
Uid->Length = Length;
|
|
*ReturnId = Uid;
|
|
|
|
|
|
Cleanup:
|
|
|
|
/* On exit, we must delete the return object */
|
|
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtExecute_CID
|
|
*
|
|
* PARAMETERS: DeviceNode - Node for the device
|
|
* ReturnCidList - Where the CID list is returned
|
|
*
|
|
* RETURN: Status, list of CID strings
|
|
*
|
|
* DESCRIPTION: Executes the _CID control method that returns one or more
|
|
* compatible hardware IDs for the device.
|
|
*
|
|
* NOTE: Internal function, no parameter validation
|
|
*
|
|
* A _CID method can return either a single compatible ID or a package of
|
|
* compatible IDs. Each compatible ID can be one of the following:
|
|
* 1) Integer (32 bit compressed EISA ID) or
|
|
* 2) String (PCI ID format, e.g. "PCI\VEN_vvvv&DEV_dddd&SUBSYS_ssssssss")
|
|
*
|
|
* The Integer CIDs are converted to string format by this function.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtExecute_CID (
|
|
ACPI_NAMESPACE_NODE *DeviceNode,
|
|
ACPI_DEVICE_ID_LIST **ReturnCidList)
|
|
{
|
|
ACPI_OPERAND_OBJECT **CidObjects;
|
|
ACPI_OPERAND_OBJECT *ObjDesc;
|
|
ACPI_DEVICE_ID_LIST *CidList;
|
|
char *NextIdString;
|
|
UINT32 StringAreaSize;
|
|
UINT32 Length;
|
|
UINT32 CidListSize;
|
|
ACPI_STATUS Status;
|
|
UINT32 Count;
|
|
UINT32 i;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE (UtExecute_CID);
|
|
|
|
|
|
/* Evaluate the _CID method for this device */
|
|
|
|
Status = AcpiUtEvaluateObject (DeviceNode, METHOD_NAME__CID,
|
|
ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING | ACPI_BTYPE_PACKAGE,
|
|
&ObjDesc);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/*
|
|
* Get the count and size of the returned _CIDs. _CID can return either
|
|
* a Package of Integers/Strings or a single Integer or String.
|
|
* Note: This section also validates that all CID elements are of the
|
|
* correct type (Integer or String).
|
|
*/
|
|
if (ObjDesc->Common.Type == ACPI_TYPE_PACKAGE)
|
|
{
|
|
Count = ObjDesc->Package.Count;
|
|
CidObjects = ObjDesc->Package.Elements;
|
|
}
|
|
else /* Single Integer or String CID */
|
|
{
|
|
Count = 1;
|
|
CidObjects = &ObjDesc;
|
|
}
|
|
|
|
StringAreaSize = 0;
|
|
for (i = 0; i < Count; i++)
|
|
{
|
|
/* String lengths include null terminator */
|
|
|
|
switch (CidObjects[i]->Common.Type)
|
|
{
|
|
case ACPI_TYPE_INTEGER:
|
|
StringAreaSize += ACPI_EISAID_STRING_SIZE;
|
|
break;
|
|
|
|
case ACPI_TYPE_STRING:
|
|
StringAreaSize += CidObjects[i]->String.Length + 1;
|
|
break;
|
|
|
|
default:
|
|
Status = AE_TYPE;
|
|
goto Cleanup;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now that we know the length of the CIDs, allocate return buffer:
|
|
* 1) Size of the base structure +
|
|
* 2) Size of the CID DEVICE_ID array +
|
|
* 3) Size of the actual CID strings
|
|
*/
|
|
CidListSize = sizeof (ACPI_DEVICE_ID_LIST) +
|
|
((Count - 1) * sizeof (ACPI_DEVICE_ID)) +
|
|
StringAreaSize;
|
|
|
|
CidList = ACPI_ALLOCATE_ZEROED (CidListSize);
|
|
if (!CidList)
|
|
{
|
|
Status = AE_NO_MEMORY;
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Area for CID strings starts after the CID DEVICE_ID array */
|
|
|
|
NextIdString = ACPI_CAST_PTR (char, CidList->Ids) +
|
|
((ACPI_SIZE) Count * sizeof (ACPI_DEVICE_ID));
|
|
|
|
/* Copy/convert the CIDs to the return buffer */
|
|
|
|
for (i = 0; i < Count; i++)
|
|
{
|
|
if (CidObjects[i]->Common.Type == ACPI_TYPE_INTEGER)
|
|
{
|
|
/* Convert the Integer (EISAID) CID to a string */
|
|
|
|
AcpiExEisaIdToString (NextIdString, CidObjects[i]->Integer.Value);
|
|
Length = ACPI_EISAID_STRING_SIZE;
|
|
}
|
|
else /* ACPI_TYPE_STRING */
|
|
{
|
|
/* Copy the String CID from the returned object */
|
|
|
|
AcpiUtCopyIdString (NextIdString, CidObjects[i]->String.Pointer);
|
|
Length = CidObjects[i]->String.Length + 1;
|
|
}
|
|
|
|
CidList->Ids[i].String = NextIdString;
|
|
CidList->Ids[i].Length = Length;
|
|
NextIdString += Length;
|
|
}
|
|
|
|
/* Finish the CID list */
|
|
|
|
CidList->Count = Count;
|
|
CidList->ListSize = CidListSize;
|
|
*ReturnCidList = CidList;
|
|
|
|
|
|
Cleanup:
|
|
|
|
/* On exit, we must delete the _CID return object */
|
|
|
|
AcpiUtRemoveReference (ObjDesc);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|